Anti-shrinkage structure of foaming mold sealing element

Abstract

The utility model relates to the technical field of foaming equipment, and discloses an anti-shrinkage structure for sealing elements of a foaming mold, which comprises a plurality of sealing elements arranged around a foaming forming cavity of the foaming mold and pressing strips arranged on the outer sides of the sealing elements, the first end of one sealing piece abuts against the side face of the adjacent sealing piece, a spring seat is arranged between one end of one pressing strip and the side face of the adjacent pressing strip, each spring seat right faces the second end of the corresponding sealing piece, compression springs are arranged between the spring seats and the sealing pieces in one-to-one correspondence, and the compression springs form jacking pressure on the sealing pieces. According to the anti-shrinkage structure of the foaming mold sealing element, continuous acting force is provided for the sealing element through the compression spring, even if one sealing element generates shrinkage deformation due to some factors, the sealing element can be kept in close contact with the other sealing element under the action of the compression spring, the sealing performance is guaranteed, and the problem caused by the shrinkage phenomenon is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of foaming equipment, in particular to an anti-shrinkage structure of a foaming mold sealing component. Background Art

[0002] Microporous polymer plastic products have excellent properties such as high notch impact strength, good toughness, long fatigue life, high thermal stability, low dielectric constant, and low thermal conductivity. When microporous polymer plastic products are produced, they are foamed and molded using a foaming vulcanizer in conjunction with a supercritical gas foaming mold. Among them, the sealing problem of the supercritical gas foaming mold requires special attention. To this end, existing foaming molds will set seals on the periphery of the foaming molding cavity to ensure that the molding press temperature is within ≤210°C, the surface pressure is ≤100MPa, and the mold cavity can withstand an air pressure of 20MPa for repeated use. Such seals are commonly in the form of strips. However, due to the influence of foaming temperature, pressure and other characteristics, the seals will shrink, resulting in a decrease in sealing effect and high maintenance costs. Utility Model Content

[0003] Based on the above problems, the purpose of the present invention is to provide an anti-shrinkage structure for a foaming mold seal to ensure a long-lasting sealing effect.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A foaming mold seal anti-shrinkage structure includes a plurality of seals arranged around the foaming molding cavity of the foaming mold and a beading arranged on the outside of each seal. The seals are connected in sequence and enclosed to form a circle, and the first end of a seal abuts the side of an adjacent seal. A spring seat is provided between one end of a beading and the side of an adjacent beading. Each spring seat is opposite to the second end of each seal, and a compression spring is provided between the corresponding spring seats and the seals. The compression spring forms a top pressure on the seal.

[0006] As an optional solution, the spring seat is provided with an installation cavity for installing the compression spring, and a screw plug is installed in the installation cavity. The screw plug presses the compression spring and makes the elastic force of the compression spring adjustable.

[0007] As an optional solution, the contact surface between the bead and the seal is inclined, and a negative angle slope is formed on the bead, so that the bead is pressed against the seal.

[0008] As an optional solution, the cross-sectional shape of the spring seat is consistent with the cross-sectional shape of the pressure strip.

[0009] As an optional solution, the outer surface of each spring seat is flush with the outer edge of an adjacent bead and the end edge of another adjacent bead.

[0010] The beneficial effects of the utility model are as follows: the anti-shrinkage structure of the foaming mold seal provides continuous force to the seal through the compression spring. Even if one seal shrinks and deforms due to some factors, it can maintain close contact with the other seal under the action of the compression spring, thereby ensuring the sealing performance and effectively solving the problem caused by the shrinkage phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the anti-shrinkage structure of the foaming mold seal provided by an embodiment of the utility model;

[0012] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0013] Figure 3 This is a schematic diagram of the cooperation between the pressure strip and the spring seat in the anti-shrinkage structure of the foaming mold seal provided by an embodiment of the present utility model.

[0014] In the attached figure:

[0015] 1. Seal; 2. Pressure strip; 3. Spring seat; 4. Compression spring; 5. Mounting cavity; 6. Screw plug. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0017] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0018] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0019] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0020] See also Figures 1 to 3 As shown, this embodiment provides an anti-shrinkage structure for a foaming mold seal, comprising a plurality of seals 1 arranged around the foaming molding cavity of the foaming mold and a bead 2 arranged on the outside of each seal 1. The seals 1 are connected in sequence and enclosed to form a circle, and the first end of a seal 1 abuts against the side of an adjacent seal 1. A spring seat 3 is provided between one end of a bead 2 and the side of an adjacent bead 2. Each spring seat 3 is opposite to the second end of each seal 1, and a compression spring 4 is provided between the one-to-one corresponding spring seat 3 and the seal 1, and the compression spring 4 forms a top pressure on the seal 1.

[0021] Thus, the compression spring 4 provides a continuous force on the seal 1. Even if one seal 1 shrinks and deforms due to some factors, it can maintain close contact with the other seal 1 under the action of the compression spring 4, ensuring the sealing performance and effectively solving the problem caused by the shrinkage phenomenon.

[0022] Optionally, an installation cavity 5 for installing a compression spring 4 is provided on the spring seat 3, and a screw plug 6 is installed in the installation cavity 5. The screw plug 6 presses the compression spring 4, and the elastic force of the compression spring 4 is adjustable to form a suitable pressing pressure on the seal 1 to ensure the sealing performance.

[0023] Optionally, the contact surface between the bead 2 and the seal 1 is inclined, and a negative angle slope is formed on the bead 2, so that the bead 2 presses on the seal 1, thereby reliably fixing the seal 1. Here, the negative angle α of the bead 2 is preferably 10° to 20°.

[0024] Optionally, the cross-sectional shape of the spring seat 3 is consistent with the cross-sectional shape of the pressure strip 2 to ensure that the spring seat 3 is reliably fixed.

[0025] Optionally, the outer surface of each spring seat 3 is flush with the outer edge of an adjacent bead 2 and the end edge of another adjacent bead 2, which is consistent with the original appearance without the spring seat 3 installed, and the modification cost is low.

[0026] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Anti-shrinkage structure of foaming mold seal, characterized in that, The invention comprises a plurality of sealing members (1) arranged around the foaming molding cavity of the foaming mold and a pressure strip (2) arranged on the outside of each sealing member (1), wherein the sealing members (1) are connected in sequence and enclosed in a circle, and the first end of one sealing member (1) abuts against the side of an adjacent sealing member (1), a spring seat (3) is arranged between one end of one pressure strip (2) and the side of an adjacent pressure strip (2), each spring seat (3) is opposite to the second end of each sealing member (1), and a compression spring (4) is arranged between the corresponding spring seats (3) and the sealing member (1), and the compression spring (4) forms a top pressure on the sealing member (1).

2. The anti-shrinkage structure of the foaming mold seal according to claim 1, characterized in that: The spring seat (3) is provided with an installation cavity (5) for installing the compression spring (4), and a screw plug (6) is installed in the installation cavity (5). The screw plug (6) presses the compression spring (4) and makes the elastic force of the compression spring (4) adjustable.

3. The anti-shrinkage structure of the foaming mold seal according to claim 1, characterized in that: The contact surface between the pressure strip (2) and the sealing member (1) is inclined, and a negative angle slope is formed on the pressure strip (2), so that the pressure strip (2) is pressed on the sealing member (1).

4. The anti-shrinkage structure of the foaming mold seal according to claim 3, characterized in that: The cross-sectional shape of the spring seat (3) is consistent with the cross-sectional shape of the pressure strip (2).

5. The anti-shrinkage structure of the foaming mold seal according to claim 1, characterized in that: The outer surface of each spring seat (3) is flush with the outer edge of an adjacent pressure strip (2) and the end edge of another adjacent pressure strip (2).

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