Panel injection molding mold

Abstract

The utility model discloses a panel injection molding mould which comprises a male mould base and a female mould base which are matched with each other, the female mould base comprises an upper mould base, a panel and a female mould plate which are detachably connected, and the inner side of the female mould plate is fixedly connected with a female mould core; the male mold base comprises a bottom plate, mold feet and a male mold plate which are fixedly connected, a male mold core is fixed on the inner side of the male mold plate, a panel cavity is formed between the female mold core and the male mold core, an ejection structure for ejecting out a panel is arranged on the male mold base, a pouring gate assembly is arranged in the junction box, and the pouring gate assembly comprises a pouring connecting block. The top end of the pouring connecting block is provided with a glue inlet runner communicating with a communicating groove in the pouring connecting block, the feeding end of the glue inlet runner penetrates through the upper die base and communicates with a glue inlet formed in the upper die base, and the bottom end of the pouring connecting block is provided with a branch runner assembly communicating with the cavity and a heating device arranged on the pouring connecting block. The molten plastic can be stably and uniformly distributed into the mold cavity, and meanwhile, the mold filling time and the heat loss can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a panel injection molding mold. Background Art

[0002] With the continuous improvement of people's living standards, plastic products have become an indispensable synthetic material in modern life. Plastics have the advantages of light weight, stable chemical properties, excellent electrical insulation, high strength, and wide distribution of mechanical strength. Injection molding technology is one of the main processing methods for plastic products and can produce and manufacture complex molded products at one time. It is an important method for thermoplastic material molding.

[0003] During the injection molding process, the existing molten plastic has poor fluidity, resulting in poor injection molding due to heat loss during the flow of the molten plastic, and the molding process is slow and takes a long time when the molten plastic flows into the cavity. Utility Model Content

[0004] The utility model aims to provide a panel injection molding mold, which can distribute molten plastic into the mold cavity smoothly and evenly, and can reduce the mold filling time and heat loss.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A panel injection molding mold, comprising a male mold base and a female mold base that cooperate with each other, the female mold base comprising a detachably connected upper mold base, a panel and a female mold plate, the inner side of the female mold plate is fixedly connected with a female mold core; the male mold base comprises a fixedly connected bottom plate, a mold foot and a male mold plate, the inner side of the male mold plate is fixed with a male mold core, a panel cavity is formed between the female mold core and the male mold core, and the male mold base is provided with an ejection structure for ejecting the panel, characterized in that a junction box is embedded in the panel, a gate assembly is provided in the junction box, the gate assembly comprises a casting connection block, the top of the casting connection block is provided with a glue feed channel connected to its internal conducting groove, the feed end of the glue feed channel passes through the upper mold base and is connected to the glue inlet installed thereon, the bottom end of the casting connection block is provided with a branch channel assembly connected to the cavity, and a heating device arranged on the casting connection block.

[0007] Furthermore, the branch runner assembly includes a first runner and a second runner communicated with the casting connection block; the first runner and the second runner are symmetrically arranged on both sides of the glue inlet runner.

[0008] Furthermore, the heating device includes a cast connection block at both ends, and heating wires are arranged on the upper and lower surfaces thereof. The upper and lower surfaces of the cast connection block are provided with grooves engaged with the heating wires.

[0009] Furthermore, a first cooling water channel is provided in the panel, and a liquid inlet and a liquid outlet connected to the first cooling water channel are provided on the side of the panel, and the liquid inlet and the liquid outlet are located on the same side of the panel.

[0010] Preferably, the first cooling water channel is a U-shaped structure, and the first cooling water channel is arranged on the periphery of the junction box.

[0011] Furthermore, a plurality of second cooling water channels are arranged in parallel along the length direction of the female mold core and the male mold core, and the liquid inlet pipe and the liquid outlet pipe of the second cooling water channel respectively pass through the two sides of the female mold plate and the male mold plate.

[0012] Furthermore, the ejection structure includes an ejector plate arranged between the bottom plate and the male plate, the ejector plate includes an upper ejector plate and a lower ejector plate that are fixedly connected, and a plurality of ejectors are fixedly connected to the upper ejector plate.

[0013] Furthermore, the upper ejector plate and the lower ejector plate are penetrated by support columns, and one end of the support column opposite to the bottom plate is provided with a nail hole, and the bolts pass through the bottom plate and the nail hole in sequence and are fixedly connected thereto.

[0014] Furthermore, a reset rod is provided between the upper ejector plate and the male plate, one end of the reset rod passes through the male plate and the other end is fixedly connected to the upper ejector plate, and an elastic column is sleeved on the reset rod.

[0015] Furthermore, the panel injection molding mold also includes a core pulling mechanism arranged on both sides of the male mold base;

[0016] The core pulling mechanism includes a slider slidably arranged on the male mold seat and a cylinder for driving the slider to slide. A side core is fixed to the end of the slider away from the cylinder. A positioning hole is opened on the side core to match the positioning column at the bottom of the female mold core.

[0017] The beneficial effects of the utility model are as follows: the bottom end of the casting connection block is provided with a runner assembly connected to the cavity, which can distribute the molten plastic into the cavity smoothly and evenly, thereby reducing the mold filling time; and the heating assembly arranged on the casting connection block can heat the molten plastic, thereby ensuring the fluidity of the molten plastic and avoiding poor injection molding due to heat loss during the flow of the molten plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the panel injection molding mold;

[0020] Figure 2 It is a partial schematic diagram of the panel injection molding mold;

[0021] Figure 3 This is a schematic diagram of the inside of the mold core of the panel injection molding mold;

[0022] Figure 4 It is a schematic diagram of the male and female cores in the panel injection molding mold;

[0023] Figure 5 for Figure 4 Top view of the . DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Refer to the attached Figure 1-Figure 5 According to the panel injection molding mold of the embodiment of the utility model, it includes a male mold base and a female mold base that cooperate with each other. The female mold base includes a detachably connected upper mold base 1, a panel 2 and a female mold plate 3, and a female mold core 4 is fixedly connected to the inner side of the female mold plate 3; the male mold base includes a fixedly connected bottom plate 5, a mold foot 6 and a male mold plate 7, and a male mold core 8 is fixed to the inner side of the male mold plate 7. A panel cavity is formed between the female mold core 4 and the male mold core 8, and an ejection structure 9 for ejecting the panel is provided on the male mold base, characterized in that a junction box 10 is embedded on the panel 2, and a gate assembly 11 is provided in the junction box 10. The gate assembly 11 includes a casting connection block 11a, and the top of the casting connection block 11a is provided with a glue feed channel 11b connected to its internal conducting groove, and the feed end of the glue feed channel 11b passes through the upper mold base 1 and is connected to the glue feed port 11c installed thereon, and the bottom end of the casting connection block 11a is provided with a branch channel assembly 12 connected to the cavity.

[0027] During operation, the male mold plate 7 is installed on the fixed mold plate of the injection machine, and the upper mold base 1 is installed on the movable mold plate of the injection machine. The upper mold base 1 moves together with the mold clamping system of the injection machine. Under the thrust of the screw, the injection machine passes the molten plastic through the glue inlet 11c and the glue inlet channel 11b into the conducting groove of the casting connection block 11a, and is diverted through the diverter channel assembly 12 to flow into the cavity formed between the female mold core 4 and the male mold core 8.

[0028] In one embodiment, if Figure 3 As shown, the runner assembly 12 includes a first runner 12a and a second runner 12b connected to the casting connection block 11a, and the first runner 12a and the second runner 12b are symmetrically arranged on both sides of the injection runner 11b. The first runner 12a and the second runner 12b are used to distribute the molten plastic into the cavity smoothly and evenly, and can also reduce the time of filling the mold and reduce heat loss.

[0029] In order to improve the fluidity of the molten plastic and avoid poor injection molding due to heat loss during the flow of the molten plastic. Heating wires 13 are arranged on the upper and lower surfaces of the two ends of the casting connection block 11a, and grooves for engaging with the heating wires 13 are provided on the upper and lower surfaces of the casting connection block 11a. The heating wires 13 heat the molten plastic in the casting connection block 11a and the first and second flow channels 12a and 12b to ensure the fluidity of the molten plastic. Preferably, the heating wires 13 are arranged in an annular manner on the upper and lower surfaces of the casting connection block 11a, with a large heating area, thereby improving the heating effect of the molten plastic.

[0030] In one embodiment, if Figure 2 and Figure 3 As shown, in order to prevent the junction box 10 and the panel 2 from overheating, a first cooling water channel 2a is provided in the panel 2, and a liquid inlet 2b and a liquid outlet 2c connected to the first cooling water channel 2a are provided on the side of the panel 2. The temperature of the junction box 10 and the panel 2 can be taken away through the set first cooling water channel 2a.

[0031] Preferably, the first cooling water channel 2a is a U-shaped structure, and the first cooling water channel 2a is arranged on the periphery of the junction box 10, which can fully absorb heat and has a good cooling effect.

[0032] In one embodiment, if Figure 4As shown, in order to increase the molding speed of the molten plastic entering the mold cavity, a plurality of second cooling water channels 14 are arranged in parallel along the length direction of the female mold core 4 and the male mold core 8, and the liquid inlet pipe and the liquid outlet pipe of the second cooling water channel 14 respectively pass through the two sides of the female mold plate 3 and the male mold plate 7. The second cooling water channels 14 are respectively located on the upper side and the lower side of the mold cavity, which can quickly cool and mold the molten plastic flowing into the mold cavity, and increase the cooling and solidification of the molten plastic in the mold cavity. After the plastic part is cooled and solidified, the mold is opened.

[0033] In one embodiment, if Figure 4 As shown, the ejection structure 9 includes an ejector plate arranged between the bottom plate 5 and the male mold plate 7, and the ejector plate includes an upper ejector plate 9a and a lower ejector plate 9b that are fixedly connected. A plurality of ejectors are fixedly connected to the upper ejector plate 9a, and the molded plastic can be ejected from the mold cavity through the ejectors, and the mold can then proceed to the next injection molding cycle.

[0034] Furthermore, the upper ejector plate 9a and the lower ejector plate 9b are penetrated by a support column 9c, and a nail hole is provided at one end of the support column 9c opposite to the bottom plate 5, and bolts pass through the bottom plate 5 and the nail hole in sequence and are fixedly connected thereto. When the ejector rod of the equipment ejects the product on the male mold seat, the upper ejector plate 9a and the lower ejector plate 9b can move along the support column 9c at the same time to ensure that the ejector will not deviate or tilt.

[0035] A reset rod 9d is also provided between the upper ejector plate 9a and the male mold plate 7. One end of the reset rod 9d passes through the male mold plate 7 and the other end is fixedly connected to the upper ejector plate 9a. An elastic column is sleeved on the reset rod 9d.

[0036] In one embodiment, if Figure 5 As shown, in order to assist the internal structure of the plastic panel to be formed, the surface of the injection-molded panel is free of defects, and the yield and efficiency are improved. The core-pulling mechanism 15 on both sides of the male mold seat includes a slider 15a slidably arranged on the male mold seat and a cylinder 15b for driving the slider 15a to slide. A side core 15c is fixed to one end of the slider 15a away from the cylinder 15b. The side core 15c is provided with a positioning hole that matches the positioning column 16 at the bottom of the female mold core 4.

[0037] During operation, before the male mold base and the female mold base are closed, the cylinder 15b drives the slider 15a to move toward the male mold core 7, and the side core 15c is in contact with the side of the male mold core 7. When closing the mold, the positioning column 16 provided on the female mold core 4 can be inserted and positioned with the positioning hole on the side core 15c; when closing the mold, the upper mold base 1 moves together with the mold closing system of the injection molding machine, so that the female mold plate 3 moves away from the male mold plate 7, the female mold core 4 fixedly connected to the inner side of the female mold plate 3 is separated from the male mold core 8, and the positioning column 16 installed at the bottom of the female mold core 4 withdraws from the positioning hole on the side of the side core 15c. The core pulling mechanism 15 has a simple and compact structure, which ensures the accuracy of mold closing, improves the yield rate and efficiency, and reduces production costs.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A panel injection molding mold, comprising a male mold base and a female mold base that cooperate with each other, the female mold base comprising a detachably connected upper mold base (1), a panel (2) and a female mold plate (3), the inner side of the female mold plate (3) being fixedly connected with a female mold core (4); the male mold base comprising a fixedly connected bottom plate (5), a mold foot (6) and a male mold plate (7), the inner side of the male mold plate (7) being fixed with a male mold core (8), a panel cavity being formed between the female mold core (4) and the male mold core (8), the male mold base being provided with an ejection structure (9) for ejecting the panel, characterized in that: A junction box (10) is embedded on the panel (2), a gate assembly (11) is arranged inside the junction box (10), the gate assembly (11) comprises a casting connection block (11a), a top end of the casting connection block (11a) is provided with a glue feed channel (11b) connected to an internal conducting groove thereof, a feed end of the glue feed channel (11b) passes through the upper mold base (1) and is connected to a glue feed port (11c) installed thereon, a bottom end of the casting connection block (11a) is provided with a branch channel assembly (12) connected to a mold cavity, and a heating device arranged on the casting connection block (11a).

2. A panel injection molding mold according to claim 1, characterized in that: The branch flow channel assembly (12) comprises a first flow channel (12a) and a second flow channel (12b) which are connected to the casting connection block (11a); The first flow channel (12a) and the second flow channel (12b) are symmetrically arranged on both sides of the glue inlet flow channel (11b).

3. A panel injection molding mold according to claim 2, characterized in that: The heating device comprises a casting connection block (11a) with heating wires (13) arranged on its upper and lower surfaces at both ends, and grooves engaged with the heating wires (13) are provided on the upper and lower surfaces of the casting connection block (11a).

4. A panel injection molding mold according to claim 1, 2 or 3, characterized in that: A first cooling water channel (2a) is provided in the panel (2), and a liquid inlet (2b) and a liquid outlet (2c) connected to the first cooling water channel (2a) are provided on the side of the panel (2), and the liquid inlet (2b) and the liquid outlet (2c) are located on the same side of the panel (2).

5. A panel injection molding mold according to claim 4, characterized in that: The first cooling water channel (2a) is a square-shaped structure, and the first cooling water channel (2a) is arranged on the outer periphery of the junction box (10).

6. A panel injection molding mold according to claim 1, 2 or 3, characterized in that: A plurality of second cooling water channels (14) are arranged in parallel along the length direction of the female mold core (4) and the male mold core (8), and the liquid inlet pipe and the liquid outlet pipe of the second cooling water channel (14) respectively pass through the two sides of the female mold plate (3) and the male mold plate (7).

7. A panel injection molding mold according to claim 1, characterized in that: The ejection structure (9) comprises an ejector plate arranged between the bottom plate (5) and the male plate (7), the ejector plate comprising an upper ejector plate (9a) and a lower ejector plate (9b) which are fixedly connected, and a plurality of ejectors are fixedly connected to the upper ejector plate (9a).

8. A panel injection molding mold according to claim 7, characterized in that: The upper ejector plate (9a) and the lower ejector plate (9b) are penetrated by a support column (9c), and one end of the support column (9c) opposite to the bottom plate (5) is provided with a nail hole, and bolts pass through the bottom plate (5) and the nail hole in sequence and are fixedly connected thereto.

9. A panel injection molding mold according to claim 8, characterized in that: A reset rod (9d) is also provided between the upper ejector plate (9a) and the male template (7), one end of the reset rod (9d) passes through the male template (7) and the other end is fixedly connected to the upper ejector plate (9a), and an elastic column is sleeved on the reset rod (9d).

10. The panel injection molding mold according to claim 1, characterized in that: The panel injection molding mold also includes a core pulling mechanism (15) arranged on both sides of the male mold base; The core-pulling mechanism (15) comprises a slider (15a) slidably arranged on a male mold base and a cylinder (15b) for driving the slider (15a) to slide. A side core (15c) is fixed to one end of the slider (15a) away from the cylinder (15b). A positioning hole is provided on the side core (15c) to match a positioning column (16) at the bottom of the female mold core (4).

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