Novel runner combined feeding device

Abstract

The utility model provides a novel runner combined feeding device, which relates to the technical field of plastic injection molding and comprises a first mold and a second mold, a plurality of first injection molding channels are distributed on the first mold, a plurality of second injection molding channels are distributed on the second mold, and the first injection molding channels and the second injection molding channels are arranged in an inclined manner. First butt-joint holes are formed in the butt-joint positions of the first injection molding channel and the second injection molding channel, each first butt-joint hole comprises a first arc section and a second arc section which are symmetrically arranged, and a linear section used for limiting the alignment position is connected between the two ends of the first arc section and the two ends of the second arc section. The injection mold has the beneficial effects that the first butt-joint holes are regularly oval, when the first injection molding channel and the second injection molding channel are in butt joint, the first butt-joint holes of the first injection molding channel and the second injection molding channel are correspondingly aligned and coincide together, and the first butt-joint holes of the first injection molding channel and the second injection molding channel can be aligned more accurately and quickly through the reference straight line section in the alignment direction.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic injection molding, in particular to a new flow channel combined with a feeding device. Background Art

[0002] An injection mold is mainly used for injection molding of plastic parts. An injection mold cavity of a specific shape and size is made inside the mold. After the fluid injection liquid enters the injection mold cavity of a specific shape and size inside the mold and cools down, the fluid injection liquid can be solidified into an injection molded original of a specific shape and size, which facilitates the processing of plastic originals of special shapes and sizes.

[0003] There are currently many patents on injection molds. For example, the Chinese patent document (Announcement No.: CN210851174U, Patent Name: A Device for Preventing Deformation of Slender Cores) discloses in its technical solution: "It includes a base and an upper mold, characterized in that a mold foot is fixed to the top of the base by screws, and a lower mold is fixed to the top of the mold foot. The upper and lower molds are arranged relative to each other to form a cavity. A pouring gate and a pouring channel are respectively provided on the upper mold. The pouring channel is inclined, and the side walls of the pouring channel are fixed with distributed partitions by screws. A support plate is fixed to one side of the lower mold by screws, and a mounting plate is fixed to the top of the support plate by bolts. A cylinder and a guide column are respectively fixed on both sides of the mounting plate by bolts. A piston rod is provided inside the cylinder, and the other end of the piston rod is fixed to a protective seat by nuts and bolts. The protective seat is slidably provided on the guide post, and a core body is slidably provided inside the protective seat. The core body includes a core body and a temperature-resistant layer."

[0004] Combined with the description and drawings of the patent document, the injection molding raw material is injected from the pouring gate and enters the mold cavity through the pouring channel. The pouring gate is a straight section and the pouring channel is an inclined section. The corner formed between the pouring gate and the pouring channel is an area with slower flow rate, which is prone to stagnation and material accumulation.

[0005] The feed holes of the two molds in the prior art are also as follows Figure 1 The irregular ovals shown are not aligned precisely, which can easily cause the injection molding material to be stuck in the gap between the two irregular ovals. Utility Model Content

[0006] The utility model overcomes the shortcomings of the prior art and provides a new runner combined with a feeding device, which makes the first injection channel and the second injection channel dock more accurately and quickly through the first docking hole, and is less likely to cause gaps due to misalignment.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A new runner combined with a feeding device includes a first mold and a second mold, wherein the first mold is distributed with a plurality of first injection channels, and the second mold is distributed with a plurality of second injection channels, the first injection channels and the second injection channels are both inclined, and a first docking hole is provided at the docking point of the first injection channel and the second injection channel, the first docking hole includes a symmetrically arranged first arc segment and a second arc segment, and a straight line segment for limiting the alignment position is connected between the two ends of the first arc segment and the second arc segment.

[0009] Furthermore, the first docking hole is smooth and concave inwardly to form an arc-shaped recess, and the arc-shaped recess is inclined and extended to form a guiding inclined surface.

[0010] Furthermore, a third mold is provided below the second mold, a first plastic flow channel is formed on the lower surface of the second mold and the upper surface of the third mold, and the first injection channel, the second injection channel and the first plastic flow channel are connected.

[0011] Furthermore, a plurality of third injection channels are distributed on the side of the first injection channel, a plurality of fourth injection channels are distributed on the side of the second injection channel, and a second docking hole is provided at the docking point of the third injection channel and the fourth injection channel.

[0012] Furthermore, a fourth mold is arranged below the third mold, and the third mold is distributed with several fifth injection channels. A third docking hole is provided at the docking point of the fourth injection channel and the fifth injection channel, and the first docking hole, the second docking hole and the third docking hole have the same structure.

[0013] Furthermore, a second plastic flow channel is formed between the lower surface of the third mold and the upper surface of the fourth mold, and the third injection channel, the fourth injection channel, the fifth injection channel and the second plastic flow channel are connected.

[0014] Furthermore, a plurality of mounting holes are distributed in an annular pattern around the periphery of the first mold, and the mounting holes are arranged on the side of the third injection channel.

[0015] Furthermore, a plurality of first fixing holes are provided in an annular distribution around the periphery of the second mold, and a plurality of second fixing holes are provided in an annular distribution around the periphery of the third mold, and the first fixing holes correspond to the second fixing holes.

[0016] Furthermore, a third fixing hole is provided between the second fixing hole and the fifth injection channel, and a plurality of fourth fixing holes are provided in an annular distribution around the fourth mold, and the third fixing hole corresponds to the fourth fixing holes.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The first docking hole is a regular ellipse. When the first injection channel and the second injection channel are docked, the first docking holes of the two will be aligned and overlapped accordingly. It is not easy for the first docking holes of the two to be misaligned and cause gaps due to the inability to overlap. Moreover, by referring to the straight line segment as the alignment direction, the alignment of the first docking holes of the two can be made more accurate and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the butt-jointing hole of the prior art mold;

[0021] Figure 2 This is an overall diagram of the new flow channel combined with the feeding device of the embodiment of the utility model;

[0022] Figure 3 This is a cross-sectional view of a new flow channel combined with a feeding device according to an embodiment of the present utility model;

[0023] Figure 4 This is an enlarged cross-sectional view of the first docking hole of an embodiment of the present utility model;

[0024] Figure 5 It is a schematic diagram of the third mold of the embodiment of the present utility model.

[0025] In the figure: 1-first mold, 101-first injection channel, 102-third injection channel, 103-mounting hole, 2-second mold, 201-second injection channel, 202-fourth injection channel, 203-first fixing hole, 3-third mold, 301-fifth injection channel, 302-second fixing hole, 303-second fixing hole, 4-fourth mold, 401-fourth fixing hole, 5-first docking hole, 501-first arc segment, 502-second arc segment, 503-straight segment, 504-arc concave, 505-guide slope, 6-first plastic flow channel, 7-second plastic flow channel, 8-second docking hole, 9-third docking hole. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0027] like Figures 2 to 5As shown, a new runner combined with a feeding device includes a first mold 1 and a second mold 2. The first mold 1 is distributed with a plurality of first injection channels 101, and the second mold 2 is distributed with a plurality of second injection channels 201. The first injection channel 101 and the second injection channel 201 are both inclined. A first docking hole 5 is provided at the junction of the first injection channel 101 and the second injection channel 201. The first docking hole 5 includes a first arc segment 501 and a second arc segment 502 symmetrically arranged. A straight line segment 503 for limiting the alignment position is connected between the two ends of the first arc segment 501 and the second arc segment 502, so that the first docking hole 5 is a regular ellipse. When the first injection channel 101 and the second injection channel 201 are docked, the first docking holes 5 of the two will be aligned and overlapped accordingly, and it is not easy to cause the first docking holes 5 of the two to be misaligned and generate gaps due to the inability to overlap. By referring to the straight line segment 503 as the alignment direction, the alignment of the first docking holes 5 of the two can be made more accurate and quick.

[0028] The first docking hole 5 is smooth and concave inward to form an arc concave portion 504, and the arc concave portion 504 extends obliquely to form a guide slope 505. Figure 2 Taking the first docking hole 5 of the second injection channel 201 as an example, when the injection molding material of the first injection molding channel 101 passes through the first docking hole 5 of the second injection molding channel 201, the arc concave position can make the injection molding material flow more smoothly, reduce the flow resistance, and flow into the second injection molding channel 201 under the guidance of the guide slope 505, avoiding stagnation and improving injection efficiency.

[0029] A third mold 3 is provided below the second mold 2. A first plastic flow channel 6 is formed on the lower surface of the second mold 2 and the upper surface of the third mold 3. The first injection channel 101, the second injection channel 201 and the first plastic flow channel 6 are connected. After the injection molding raw material flows through the first injection channel 101 and the second injection channel 201, it will enter the first plastic flow channel 6 to be cooled and solidified into shape, so that a plastic product is completed.

[0030] A plurality of third injection channels 102 are distributed on the side of the first injection channel 101, a plurality of fourth injection channels 202 are distributed on the side of the second injection channel 201, and a second docking hole 8 is provided at the docking point of the third injection channel 102 and the fourth injection channel 202. A fourth mold 4 is provided below the third mold 3, and a plurality of fifth injection channels 301 are distributed on the third mold 3. A third docking hole 9 is provided at the docking point of the fourth injection channel 202 and the fifth injection channel 301. The first docking hole 5, the second docking hole 8 and the third docking hole 9 have the same structure. A second plastic flow channel 7 is formed between the lower surface of the third mold 3 and the upper surface of the fourth mold 4. The third injection channel 102, the fourth injection channel 202, the fifth injection channel 301 and the second plastic flow channel 7 are connected. After the injection molding raw material flows through the third injection channel 102, the fourth injection channel 202 and the fifth injection channel 301, it will enter the second plastic flow channel 7 for cooling and solidification molding, so that the two plastic products are completed.

[0031] A plurality of mounting holes 103 are distributed in an annular pattern around the first mold 1 . The mounting holes 103 are located on the side of the third injection channel 102 , so that the user can use first bolts to pass through the mounting holes 103 to fix the first mold 1 to an external device.

[0032] A plurality of first fixing holes 203 are provided in a circular distribution around the second mold 2, and a plurality of second fixing holes 302 are provided in a circular distribution around the third mold 3. The first fixing holes 203 correspond to the second fixing holes 302. A second bolt is used to pass through the first fixing holes 203 and the second fixing holes 302 in sequence, thereby fixing the second mold 2 and the third mold 3 together.

[0033] A third fixing hole 303 is provided between the second fixing hole 302 and the fifth injection channel 301. A plurality of fourth fixing holes 401 are provided in a circular distribution around the fourth mold 4. The third fixing hole 303 corresponds to the fourth fixing hole 401. A third bolt is used to pass through the third fixing hole 303 and the fourth fixing hole 401 in sequence, thereby fixing the third mold 3 and the fourth mold 4 together.

[0034] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A new flow channel combined with a feeding device, characterized in that: The invention comprises a first mold (1) and a second mold (2), wherein the first mold (1) is provided with a plurality of first injection channels (101) distributed thereon, and the second mold (2) is provided with a plurality of second injection channels (201) distributed thereon, wherein the first injection channels (101) and the second injection channels (201) are both arranged in an inclined manner, and a first docking hole (5) is provided at the docking point between the first injection channel (101) and the second injection channel (201), and the first docking hole (5) comprises a first arc segment (501) and a second arc segment (502) symmetrically arranged, and a straight line segment (503) for limiting the alignment position is connected between the two ends of the first arc segment (501) and the second arc segment (502).

2. The new flow channel combined with feeding device according to claim 1 is characterized in that: The first docking hole (5) is smooth and concave inwardly to form an arc-shaped recess (504), and the arc-shaped recess (504) extends obliquely to form a guiding inclined surface (505).

3. The new flow channel combined with feeding device according to claim 2 is characterized in that: A third mold (3) is provided below the second mold (2); a first plastic flow channel (6) is formed on the lower surface of the second mold (2) and the upper surface of the third mold (3); the first injection channel (101), the second injection channel (201) and the first plastic flow channel (6) are connected.

4. The new flow channel combined with feeding device according to claim 3 is characterized in that: A plurality of third injection channels (102) are distributed on the side of the first injection channel (101), a plurality of fourth injection channels (202) are distributed on the side of the second injection channel (201), and a second docking hole (8) is provided at the docking point between the third injection channel (102) and the fourth injection channel (202).

5. The new flow channel combined with feeding device according to claim 4 is characterized in that: A fourth mold (4) is provided below the third mold (3), and a plurality of fifth injection channels (301) are distributed on the third mold (3). A third docking hole (9) is provided at the joint between the fourth injection channel (202) and the fifth injection channel (301), and the first docking hole (5), the second docking hole (8) and the third docking hole (9) have the same structure.

6. The new flow channel combined with feeding device according to claim 5, characterized in that: A second plastic flow channel (7) is formed between the lower surface of the third mold (3) and the upper surface of the fourth mold (4), and the third injection channel (102), the fourth injection channel (202), the fifth injection channel (301) and the second plastic flow channel (7) are connected.

7. The new flow channel combined with feeding device according to claim 4, characterized in that: A plurality of mounting holes (103) are provided in an annular distribution around the periphery of the first mold (1), and the mounting holes (103) are provided on the sides of the third injection channel (102).

8. The new flow channel combined with feeding device according to claim 5, characterized in that: The second mold (2) is provided with a plurality of first fixing holes (203) distributed in an annular pattern around its periphery, and the third mold (3) is provided with a plurality of second fixing holes (302) distributed in an annular pattern around its periphery, wherein the first fixing holes (203) correspond to the second fixing holes (302).

9. The new flow channel combined with feeding device according to claim 8, characterized in that: A third fixing hole (303) is provided between the second fixing hole (302) and the fifth injection channel (301), and a plurality of fourth fixing holes (401) are provided in an annular distribution around the fourth mold (4), and the third fixing holes (303) correspond to the fourth fixing holes (401).

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