Hot mold pressing structure of embedded mold

Abstract

The utility model relates to the technical field of hot mold pressing, in particular to a hot mold pressing structure of an embedded mold. An upper die and a lower die are respectively fixed in the two die fixing cavities; cooling plates are fixed on the heating plates; hollow shafts are fixed on the two cooling plates; a plurality of third vent grooves penetrating to the side surface of the cooling plate are uniformly distributed in the surface, attached to the heating plate, of the cooling plate; and through holes penetrating through the upper and lower end faces of the cooling plate are formed in the inner bottom walls of the third vent grooves. The through hole of one cooling plate is communicated with one hollow shaft; and the through hole of the other cooling plate is communicated with the other hollow shaft. When the end face cooling structure is used, end face cooling of the die can be achieved, the cooling effect of the die is improved, and the compression molding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot molding technology, and in particular to a hot molding structure with an embedded mold. Background Technology

[0002] A glass mold with a raised surface is formed under normal atmospheric pressure. Therefore, a vacuum environment is required for molding. The mold is mounted on a heating plate. After hot pressing, the mold needs to be cooled. Existing mold cooling structures typically use cold air to blow onto a cooling plate, which absorbs heat from the heating plate to cool the mold. This surface-blowing cooling structure has low cooling efficiency, resulting in low molding efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a hot-molding structure with an embedded mold, addressing the defects and shortcomings of the existing technology.

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

[0005] The present invention discloses a hot molding structure for an embedded mold, comprising two heating plates; each heating plate is provided with a mold fixing cavity; an upper mold and a lower mold are respectively fixed in the two mold fixing cavities; a cooling plate is fixed on each heating plate; a hollow shaft is fixed on each of the two cooling plates; multiple third venting grooves are evenly distributed on the surface of the cooling plate that is in contact with the heating plate, extending to the side surface of the cooling plate; the inner bottom wall of each third venting groove is provided with a through hole penetrating the upper and lower end faces of the cooling plate; the through hole of one cooling plate is connected to one of the hollow shafts; the through hole of the other cooling plate is connected to the other hollow shaft.

[0006] Furthermore, the number of the third ventilation slots is eight; the third ventilation slots are distributed circumferentially on the cooling plate.

[0007] Furthermore, the cooling plate has a second venting groove on the surface connected to the hollow shaft; the second venting groove is circumferentially distributed; one end of the second venting groove is connected to the inner cavity of the hollow shaft; the other end of the second venting groove extends to the outside of the hollow shaft.

[0008] Furthermore, the cooling plate is provided with a threaded hole; the heating plate is provided with a countersunk hole; the cooling plate and the heating plate are locked and fixed by a bolt threaded through the countersunk hole and then threaded onto the threaded hole; a first vent groove is provided on the side wall of the threaded hole; the first vent groove extends to the side surface of the cooling plate.

[0009] With the above structure, the beneficial effects of this utility model are as follows: After molding, nitrogen gas is introduced into the inner cavity of the hollow shaft. After the nitrogen gas enters the third ventilation groove through the through hole, the nitrogen gas in the third ventilation groove directly contacts the heating plate, realizing the cooling of the upper mold and the lower mold. The nitrogen gas after exchanging heat with the heating plate is discharged to the outside of the hot molding structure through the third ventilation groove. In this structure, the end face of the mold can be cooled, improving the cooling effect of the mold and improving the efficiency of molding. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a first-person perspective 3D view of the cooling plate;

[0012] Figure 3 This is a second-view 3D view of the cooling plate;

[0013] Figure 4 This is a structural diagram of the heating plate;

[0014] Explanation of reference numerals in the attached figures:

[0015] 1. Hollow shaft; 2. Upper mold; 3. Lower mold; 4. Heating plate; 401. Mold fixing cavity;

[0016] 402, countersunk hole; 5, cooling plate; 501, threaded hole; 502, first vent groove;

[0017] 503, Second vent slot; 504, Through hole; 505, Thermocouple mounting hole;

[0018] 506. Third ventilation slot. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 4 As shown, the hot molding structure of the embedded mold of this utility model includes two heating plates 4; each heating plate 4 is provided with a mold fixing cavity 401; an upper mold 2 and a lower mold 3 are respectively fixed in the two mold fixing cavities 401; a cooling plate 5 is fixed on each heating plate 4; a hollow shaft 1 is fixed on each of the two cooling plates 5; multiple third ventilation grooves 506 are evenly distributed on the surface of the cooling plate 5 that are attached to the heating plate 4 and extend to the side surface of the cooling plate 5; the inner bottom wall of each third ventilation groove 506 is provided with a through hole 504 that extends through the upper and lower end faces of the cooling plate 5; the through hole 504 of one cooling plate 5 is connected to one of the hollow shafts 1; the through hole 504 of the other cooling plate 5 is connected to the other hollow shaft 1.

[0021] The entire hot-molded structure is placed inside a vacuum chamber. The side surface of the cooling plate 5 is provided with thermocouple fixing holes 505. The thermocouple fixing holes 505 are used to fix thermocouples, which are used to detect the temperature of the cooling plate 5.

[0022] The top hollow shaft 1 is fixed, and the bottom hollow shaft 1 is connected to the lifting device. The glass ball is placed on the lower mold 3 below. The vacuum structure evacuates the inside of the vacuum chamber, and then the lifting device lifts the bottom hollow shaft 1 upward, bringing the two heating plates 4 together to achieve product forming between the upper mold 2 and the lower mold 3. After forming, nitrogen gas is introduced into the inner cavity of the hollow shaft 1. The nitrogen gas enters the third venting groove 506 through the through hole 504. The nitrogen gas in the third venting groove 506 directly contacts the heating plate 4 to achieve cooling of the upper mold 2 and the lower mold 3. The nitrogen gas after exchanging heat with the heating plate 4 is discharged to the outside of the hot molding structure through the third venting groove 506. In this structure, the end face of the mold can be cooled, improving the mold cooling effect and improving the efficiency of molding.

[0023] In a preferred embodiment of this utility model, the number of the third ventilation grooves 506 is eight; the third ventilation grooves 506 are distributed in a circular pattern on the cooling plate 5; the circular distribution of the third ventilation grooves 506 makes the heat dissipation effect of the heating plate 4 more uniform.

[0024] In a preferred embodiment of this utility model, the cooling plate 5 is provided with a second venting groove 503 on the surface connected to the hollow shaft 1; the second venting groove 503 is circumferentially distributed; one end of the second venting groove 503 is connected to the inner cavity of the hollow shaft 1; the other end of the second venting groove 503 extends to the outside of the hollow shaft 1.

[0025] The second venting groove 503 connects the inner cavity of the hollow shaft 1 to the outside, so that when a vacuum is drawn, the air inside the hollow shaft 1 can also be discharged, preventing residual gas inside the hollow shaft 1 and improving the quality of compression molding.

[0026] In a preferred embodiment of this utility model, the cooling plate 5 is provided with a threaded hole 501; the heating plate 4 is provided with a countersunk hole 402; a bolt is threaded through the countersunk hole 402 and then threaded onto the threaded hole 501, thereby locking and fixing the cooling plate 5 and the heating plate 4; a first venting groove 502 is provided on the side wall of the threaded hole 501; the first venting groove 502 extends to the side surface of the cooling plate 5;

[0027] During vacuuming, the gas inside the threaded hole 501 and countersunk hole 402 can be quickly extracted through the first vent groove 502, thereby increasing the vacuum level of the entire hot-molded structure and improving the quality of the molding process.

[0028] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A hot molding structure with an embedded mold, comprising two heating plates (4); each heating plate (4) is provided with a mold fixing cavity (401); an upper mold (2) and a lower mold (3) are respectively fixed in the two mold fixing cavities (401); characterized in that Each heating plate (4) is fixed with a cooling plate (5); each of the two cooling plates (5) is fixed with a hollow shaft (1); the cooling plate (5) has multiple third ventilation grooves (506) that penetrate to the side surface of the cooling plate (5) on the surface of the heating plate (4); the inner bottom wall of each third ventilation groove (506) is provided with a through hole (504) that penetrates the upper and lower ends of the cooling plate (5); the through hole (504) of one cooling plate (5) is connected to one of the hollow shafts (1); the through hole (504) of the other cooling plate (5) is connected to the other hollow shaft (1).

2. A hot press structure of an insert die according to claim 1, characterized by: The number of the third ventilation slots (506) is eight; the third ventilation slots (506) are distributed in a circle on the cooling plate (5).

3. A hot press structure of an insert die according to claim 1, characterized by: The cooling plate (5) has a second ventilation groove (503) on the surface connected to the hollow shaft (1); the second ventilation groove (503) is circumferentially distributed; one end of the second ventilation groove (503) is connected to the inner cavity of the hollow shaft (1); the other end of the second ventilation groove (503) extends to the outside of the hollow shaft (1).

4. The hot press structure of claim 1, wherein: The cooling plate (5) is provided with a threaded hole (501); the heating plate (4) is provided with a countersunk hole (402); the bolt passes through the countersunk hole (402) and is threaded onto the threaded hole (501) to lock and fix the cooling plate (5) and the heating plate (4); a first ventilation groove (502) is provided on the side wall of the threaded hole (501); the first ventilation groove (502) extends through to the side surface of the cooling plate (5).

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