A sealing structure of a foaming mold and a foaming mold

Abstract

The application discloses a sealing structure of a foaming mold and the foaming mold. The sealing structure of the foaming mold comprises a sealing assembly installed on a lower mold plate of the foaming mold. An upper end surface of the lower mold plate is provided with a sealing groove. The sealing assembly comprises a sealing strip and a sealing pressing strip. The sealing pressing strip is fixed in the sealing groove. One side end surface of the sealing pressing strip is in close contact with one side wall of the sealing groove. The other side end of the sealing pressing strip is provided with a first wedge surface. One side end of the sealing strip is provided with a second wedge surface. The second wedge surface of the sealing strip is matched with the first wedge surface of the sealing pressing strip to wedge tightly so that the other side end surface of the sealing strip is tightly attached to the other side wall of the sealing groove. The sealing strip is fixed in a wedging mode, the sealing strip is tightly attached to the sealing groove, has excellent sealing performance, and can be sealed at a temperature of 400 DEG C, a maximum mold surface pressure of 15 MPa and a maximum inflation pressure of 25 MPa.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of foaming mold, in particular to a sealing structure of foaming mold and foaming mold. BACKGROUND

[0002] The rubber and plastic foaming products are widely used in the fields of building, light textile, medicine, chemical industry, metallurgy and shipbuilding. The rubber and plastic foaming products are foamed and formed by a foaming vulcanizing machine and a foaming mold. However, the sealing performance of the existing foaming mold is poor, which affects the quality of the foaming products. Therefore, it is urgent to solve the problem. SUMMARY

[0003] The present application aims at solving the above-mentioned problems in the background art by providing a sealing structure of foaming mold and foaming mold.

[0004] The present application aims at solving the above-mentioned problems in the background art by providing a sealing structure of foaming mold and foaming mold.

[0005] The present application aims at solving the above-mentioned problems in the background art by providing a sealing structure of foaming mold and foaming mold.

[0006] As a preferred scheme of the present application, the upper end surface of the sealing strip protrudes from the upper end surface of the lower mold plate.

[0007] As a preferred scheme of the present application, the straight line distance between the upper end surface of the sealing strip and the upper end surface of the lower mold plate is 0.3mm-0.8mm.

[0008] As a preferred scheme of the present application, the straight line distance between the upper end surface of the sealing strip and the upper end surface of the lower mold plate is 0.5mm.

[0009] As a preferred scheme of the present application, the lower sealing damping groove is arranged at the position corresponding to the sealing strip on the groove bottom of the sealing groove.

[0010] As a preferred scheme of the present application, the upper sealing damping groove is arranged at the position corresponding to the sealing strip on the lower end surface of the upper mold plate of the foaming mold.

[0011] As a preferred scheme of the present application, the lower sealing damping grooves are two, and the two lower sealing damping grooves are arranged at intervals; the upper sealing damping grooves are two, and the two upper sealing damping grooves are arranged at intervals.

[0012] As a preferred scheme of the present application, the sealing pressure strips are located outside the sealing grooves, and the sealing strips are located inside the sealing grooves.

[0013] As a preferred scheme of the present application, the second wedge surface of the sealing strip is an inclined surface that is inclined outward from top to bottom.

[0014] A foaming mold comprises a sealing structure of a foaming mold as described above.

[0015] Compared with the prior art, the present application has the following beneficial effects: the sealing strip is fixed in a wedge-tight manner, so that the sealing strip is tightly attached to the sealing groove, and has excellent sealing performance; and by arranging the lower sealing damping grooves and the upper sealing damping grooves, after the upper mold is pressed down, a part of the sealing strip is pressed into the lower sealing damping grooves and the upper sealing damping grooves, and a labyrinth sealing is formed, so that sealing can be realized under the conditions of a temperature of 400 degrees, a maximum mold face pressure of 15 MPa, and a maximum inflation pressure of 25 MPa. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic view of a sealing structure of a foaming mold;

[0017] Figure 2 is Figure 1 is an enlarged view of the sealing structure of the foaming mold at A.

[0018] in the drawings:

[0019] 1, lower mold plate; 2, upper mold plate; 3, sealing strip; 4, sealing pressure strip; 5, lower sealing damping groove; 6, upper sealing damping groove. DETAILED DESCRIPTION

[0020] The technical scheme of the present application will be further described below by means of specific embodiments and with reference to the drawings. It can be understood that the embodiments described herein are only used to explain the present application, and are not a limitation of the present application.

[0021] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic view of a sealing structure of a foaming mold; Figure 2 is Figure 1 is an enlarged view of the sealing structure of the foaming mold at A.

[0022] In the embodiment, a sealing structure of a foaming mold includes a sealing assembly installed on a lower mold plate 1 of the foaming mold, an upper end surface of the lower mold plate 1 is provided with a sealing groove, the sealing assembly includes a sealing strip 3 and a sealing pressing strip 4, the sealing pressing strip 4 is fixed in the sealing groove through bolts, one side end surface of the sealing pressing strip 4 is in close contact with one side wall of the sealing groove, the other side end of the sealing pressing strip 4 has a first wedge surface, one side end of the sealing strip 3 has a second wedge surface, the second wedge surface of the sealing strip 3 is in close contact with the first wedge surface of the sealing pressing strip 4 to make the other side end surface of the sealing strip 3 tightly close to the other side wall of the sealing groove.

[0023] Specifically, in the embodiment, the upper end surface of the sealing strip 3 protrudes from the upper end surface of the lower mold plate 1, and the linear distance between the upper end surface of the sealing strip 3 and the upper end surface of the lower mold plate 1 is 0.5 mm.

[0024] It is worth mentioning that, although the linear distance between the upper end surface of the sealing strip 3 and the upper end surface of the lower mold plate 1 is 0.5 mm in the embodiment, the linear distance between the upper end surface of the sealing strip 3 and the upper end surface of the lower mold plate 1 can also be 0.3 mm or 0.8 mm or any value between the two, and the embodiment is a preferred solution after considering the cost and sealing effect.

[0025] Specifically, in the embodiment, the bottom of the sealing groove is provided with a lower sealing damping groove 5 corresponding to the position of the sealing strip 3, the lower sealing damping groove 5 is 2, and the two lower sealing damping grooves 5 are arranged at intervals; the lower end surface of the upper mold plate 2 of the foaming mold is provided with an upper sealing damping groove 6 corresponding to the position of the sealing strip 3, the upper sealing damping groove 6 is 2, and the two upper sealing damping grooves 6 are arranged at intervals; by adopting the above structure design, the sealing performance can be effectively improved.

[0026] Specifically, in the embodiment, the sealing pressing strip 4 is located outside the sealing groove, the sealing strip 3 is located inside the sealing groove, and the second wedge surface of the sealing strip 3 is an inclined surface inclined outward from top to bottom.

[0027] The sealing structure of the foaming mold adopts a wedge tightening mode to fix the sealing strip 3, so that the sealing strip 3 tightly closes the sealing groove, has excellent sealing performance, and by arranging the lower sealing damping groove 5 and the upper sealing damping groove 6, after the upper mold is pressed down, a part of the sealing strip 3 will be pressed into the lower sealing damping groove 5 and the upper sealing damping groove 6, thereby forming a labyrinth sealing, so that the sealing can be realized under the conditions of a temperature of 400 degrees, a maximum mold surface pressure of 15 MPa, and a maximum inflation pressure of 25 MPa.

[0028] The embodiment also discloses a foaming mold including the sealing structure of the foaming mold.

[0029] The above embodiments only illustrate the basic principles and characteristics of the present application, and the present application is not limited to the above embodiments. Without departing from the spirit and scope of the present application, various changes and modifications can be made to the present application, and these changes and modifications all fall within the scope of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A sealing structure of a foaming mold comprising a sealing assembly mounted to a lower mold plate of a foaming mold, characterized by: The upper end surface of the lower mold plate is provided with a sealing groove, the sealing assembly comprises a sealing strip and a sealing pressing strip, the sealing pressing strip is fixed in the sealing groove by bolts, one side end surface of the sealing pressing strip is in close contact with one side wall of the sealing groove, the other side end of the sealing pressing strip has a first wedge surface, one side end of the sealing strip has a second wedge surface, the second wedge surface of the sealing strip is matched and wedged with the first wedge surface of the sealing pressing strip to make the other side end surface of the sealing strip closely contact the other side wall of the sealing groove, and the upper end surface of the sealing strip protrudes from the upper end surface of the lower mold plate. The bottom of the sealing groove is provided with a lower sealing damping groove corresponding to the position of the sealing strip, and the lower end surface of the upper mold plate of the foaming mold is provided with an upper sealing damping groove corresponding to the position of the sealing strip, after the upper mold plate is pressed down, a part of the sealing strip is pressed into the lower sealing damping groove and the upper sealing damping groove.

2. A sealing structure for a foam mold according to claim 1, wherein: The straight line distance between the upper end surface of the sealing strip and the upper end surface of the lower mold plate is 0.3mm-0.8mm.

3. A sealing structure for a foam mold according to claim 2, wherein: The straight line distance between the upper end surface of the sealing strip and the upper end surface of the lower mold plate is 0.5mm.

4. A sealing structure for a foam mold according to claim 1, wherein: The lower sealing damping groove is 2, and the two lower sealing damping grooves are arranged at intervals; the upper sealing damping groove is 2, and the two upper sealing damping grooves are arranged at intervals.

5. A sealing structure for a foam mold according to claim 4, wherein: The sealing pressing strip is located outside the sealing groove, and the sealing strip is located inside the sealing groove.

6. A sealing structure for a foam mold according to claim 5, wherein: The second wedge surface of the sealing strip is an inclined surface that inclines outward from top to bottom.

7. A foaming mold characterized by: A sealing structure of a foaming mold comprising any one of the sealing structures according to claims 1 to 6.

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