Thermosetting plastic part forming mold core with pressure relief function

Abstract

The utility model aims to provide a thermosetting plastic part forming die core with a pressure relief function, which solves the problem that a formed product in a cavity is incomplete, and comprises a die core, the die core is provided with the cavity and a liquid inlet, the cavity is communicated with the liquid inlet, the die core is also provided with a first pressure relief groove and a second pressure relief groove, and the first pressure relief groove and the second pressure relief groove are communicated with the liquid inlet. The first pressure relief groove and the second pressure relief groove are located on the two sides of the cavity respectively, due to the fact that the two ends of the first flow channel are communicated with the cavity and the first pressure relief groove respectively, and the two ends of the second flow channel are communicated with the cavity and the second pressure relief groove respectively, after the cavity is filled with liquid, gas can flow out of the first flow channel and the second flow channel at the moment; and when liquid exists in the first flow channel and the second flow channel, the interior of the cavity is completely discharged, and the problem that a formed product in the cavity is incomplete is solved.

Description

Technical Field

[0001] This utility model relates to the field of mold pressure relief, and in particular to mold cores used in thermosetting molding. Background Technology

[0002] The cavity in the mold core is filled with liquid, and the mold core is surrounded by the upper and lower molds. Air bubbles cannot be completely removed from the cavity. As a result, after the liquid in the cavity cools and the product is formed, the presence of air bubbles will cause gaps in the formed product. This injection molding process cannot meet the processing requirements. Utility Model Content

[0003] The purpose of this invention is to provide a thermosetting plastic molding core with pressure relief function, which solves the problem of defects in molded products inside the cavity.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This invention provides a thermosetting plastic molding core with pressure relief function, comprising a core having a cavity and a liquid inlet, the cavity and the liquid inlet being connected.

[0006] The mold core is also provided with a first pressure relief groove and a second pressure relief groove, which are located on both sides of the cavity. The mold core is also provided with a first flow channel and a second flow channel, with the first flow channel connecting the cavity and the first pressure relief groove at both ends, and the second flow channel connecting the cavity and the second pressure relief groove at both ends.

[0007] Optionally, the mold core has a protrusion, and the protrusion is provided with a liquid groove and a flow channel. The liquid groove is located on the top of the protrusion, and the two ends of the flow channel are respectively connected to the liquid groove and the liquid inlet.

[0008] Furthermore, the liquid tank is positioned higher than the liquid inlet, the diversion channel is inclined, the lower end of the diversion channel is connected to the liquid inlet, the upper end of the diversion channel is connected to the liquid tank, and the inner diameter of the diversion channel extends in a contracting state from the upper end to the lower end.

[0009] Optionally, the mold core is further provided with a first guide groove and a second guide groove, the first guide groove and the second guide groove are arranged side by side, and the first end of the first guide groove and the first end of the second guide groove are both connected to the cavity.

[0010] Furthermore, the second end of the first guide groove and the second end of the second guide groove extend through the outer end of the mold core.

[0011] Furthermore, the mold core is provided with a through hole, through which the first guide groove and the second guide groove pass.

[0012] Furthermore, a retaining plate is slidably disposed within the through hole, and the retaining plate is provided with a first retaining groove and a second retaining groove, the first retaining groove being located on the extension line of the first guide groove, and the second retaining groove being located on the extension line of the second guide groove.

[0013] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0014] This utility model discloses a thermosetting plastic molding core with pressure relief function. Since the two ends of the first flow channel are connected to the cavity and the first pressure relief groove respectively, and the two ends of the second flow channel are connected to the cavity and the second pressure relief groove respectively, after the cavity is filled with liquid, the gas will flow out from the first flow channel and the second flow channel until there is liquid in the first flow channel and the second flow channel, indicating that the cavity is clean. In this way, the molded product in the cavity will not be defective, thus solving the problem of defective products in the molded product. Attached Figure Description

[0015] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0016] Figure 1 This is a perspective view of a thermosetting plastic molding core with pressure relief function and an injection molded product according to a preferred embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A three-dimensional view of the mold core shown;

[0018] Figure 3 This is a separate view of the mold core and the embedded part shown in the figure.

[0019] The reference numerals in the attached figures are explained as follows:

[0020] 1. Mold core; 2. Cavity; 3. Liquid inlet; 4. Protrusion; 5. First pressure relief groove; 6. Second pressure relief groove; 7. First flow channel; 8. Second flow channel; 9. Embedded part; 11. First guide groove; 12. Second guide groove; 13. Through hole; 14. Clamping plate; 41. Liquid tank; 42. Drainage groove; 91. First thread; 92. Second thread; 141. First slot; 142. Second slot. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] like Figure 1 and Figure 2 and Figure 3 As shown, a thermosetting plastic molding core with pressure relief function includes a core 1, a cavity 2 and a liquid inlet 3 on the core 1, the cavity 2 and the liquid inlet 3 are connected, a high temperature liquid material is injected into the cavity 2 from the liquid inlet 3, and the high temperature liquid material is cooled in the cavity 2 to form an injection molded product.

[0025] The mold core 1 is also provided with a first pressure relief groove 5 and a second pressure relief groove 6. The first pressure relief groove 5 and the second pressure relief groove 6 are located on both sides of the cavity 2. The mold core 1 is also provided with a first flow channel 7 and a second flow channel 8. The two ends of the first flow channel 7 are connected to the cavity 2 and the first pressure relief groove 5, respectively. The two ends of the second flow channel 8 are connected to the cavity 2 and the second pressure relief groove 6, respectively. When the cavity 2 is filled with high-temperature liquid raw material, the high-temperature liquid raw material compresses the gas, causing the gas to flow out from the first flow channel 7 and the second flow channel 8, respectively. The gas will flow into the first pressure relief groove 5 and the second pressure relief groove 6. At this time, the first pressure relief groove 5 and the second pressure relief groove 6 are in a sealed state.

[0026] Continue injecting high-temperature liquid raw material into cavity 2. A small amount of high-temperature liquid raw material will enter the first flow channel 7 and the second flow channel 8, and then flow out from the first flow channel 7 and the second flow channel 8. This indicates that the gas in cavity 2 has been completely removed, and there will be no defects on the injection molded product.

[0027] The mold core 1 has a protrusion 4, and the protrusion 4 is provided with a liquid groove 41 and a flow channel 42. The liquid groove 41 is located on the top of the protrusion 4, and the two ends of the flow channel 42 are connected to the liquid groove 41 and the liquid inlet 3 respectively. The high-temperature liquid raw material is introduced into the liquid groove 41, and then the high-temperature liquid raw material flows from the flow channel 42 to the liquid inlet 3, and finally enters the cavity 2. In this way, the high-temperature liquid raw material automatically flows from the flow channel 42 to the liquid inlet 3.

[0028] The liquid tank 41 is positioned higher than the liquid inlet 3. The diversion channel 42 is inclined, with its high end connected to the liquid tank 41 and its low end connected to the liquid inlet 3. The high-temperature liquid raw material falls into the liquid tank 41 and flows naturally down the diversion channel 42. The inner diameter of the diversion channel 42 extends from the high end to the low end in a contracting state, so the diversion channel 42 has the function of collecting a small amount of high-temperature liquid raw material.

[0029] The mold core 1 is also provided with a first guide groove 11 and a second guide groove 12. The first guide groove 11 and the second guide groove 12 are arranged side by side. The first end of the first guide groove 11 and the first end of the second guide groove 12 are both connected to the cavity 2. In this example, the cavity 2 is pre-installed with an embedded part 9. The embedded part 9 has a first wire 91 and a second wire 92. The first guide groove 11 is used to place the first wire 91, and the second guide groove 12 is used to place the second wire 92.

[0030] The second end of the first guide groove 11 and the second end of the second guide groove 12 pass through the outer end of the mold core 1, so that the first wire 91 and the second wire 92 can extend to the outer end of the mold core 1.

[0031] The mold core 1 is provided with a through hole 13, which is located on the extension path of the first guide groove 11 and the second guide groove 12. A retaining plate 14 is slidably disposed in the through hole 13, and the first wire 91 and the second wire 92 can overlap the top of the retaining plate 14.

[0032] The card plate 14 is provided with a first card slot 141 and a second card slot 142. The first card slot 141 is located on the extension line of the first guide groove 11, and the second card slot 142 is located on the extension line of the second guide groove 12. The first wire 91 can be inserted into the first card slot 141, and the second wire 92 can be inserted into the second card slot 142. It can also be simultaneously inserted into the first card slot 141 and the second card slot 142 by a buckle, thus fixing the first wire 91 and the second wire 92.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A thermosetting plastic molding core with pressure relief function, comprising a core (1), wherein the core (1) is provided with a cavity (2) and a liquid inlet (3), the cavity (2) and the liquid inlet (3) being connected, characterized in that, The mold core (1) is also provided with a first pressure relief groove (5) and a second pressure relief groove (6). The first pressure relief groove (5) and the second pressure relief groove (6) are located on both sides of the cavity (2). The mold core (1) is also provided with a first flow channel (7) and a second flow channel (8). The two ends of the first flow channel (7) are respectively connected to the cavity (2) and the first pressure relief groove (5). The two ends of the second flow channel (8) are respectively connected to the cavity (2) and the second pressure relief groove (6).

2. The thermoset plastic part forming mold core with pressure relief function of claim 1, wherein, The mold core (1) has a protrusion (4), and the protrusion (4) is provided with a liquid groove (41) and a drainage groove (42). The liquid groove (41) is located on the top of the protrusion (4), and the two ends of the drainage groove (42) are respectively connected to the liquid groove (41) and the liquid inlet (3).

3. The thermoset plastic part molding core with pressure relief function according to claim 2, wherein, The liquid tank (41) is positioned higher than the liquid inlet (3). The diversion channel (42) is inclined. The lower end of the diversion channel (42) is connected to the liquid inlet (3), and the upper end of the diversion channel (42) is connected to the liquid tank (41). The inner diameter of the diversion channel (42) extends from the upper end to the lower end in a contracting state.

4. The thermoset plastic part molding core with pressure relief function according to claim 1, wherein, The mold core (1) is also provided with a first guide groove (11) and a second guide groove (12). The first guide groove (11) and the second guide groove (12) are arranged side by side. The first end of the first guide groove (11) and the first end of the second guide groove (12) are both connected to the cavity (2).

5. The thermoset plastic part molding core with pressure relief function according to claim 4, wherein, The second end of the first guide groove (11) and the second end of the second guide groove (12) pass through the outer end of the mold core (1).

6. The thermoset plastic part molding core with pressure relief function according to claim 4, wherein, The mold core (1) is provided with a through hole (13), which is located on the extension path of the first guide groove (11) and the second guide groove (12). A retaining plate (14) is slidably provided in the through hole (13).

7. The thermoset plastic part molding core with pressure relief function according to claim 6, wherein, The card plate (14) is provided with a first card slot (141) and a second card slot (142). The first card slot (141) is located on the extension line of the first guide groove (11), and the second card slot (142) is located on the extension line of the second guide groove (12).

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