Spiral sealing strip mold

Abstract

The utility model belongs to the technical field of rubber molds, and particularly relates to a spiral sealing strip mold, which comprises an upper mold plate and a lower mold plate, a continuous spiral upper cavity is arranged on the surface of the upper mold plate, a continuous spiral lower cavity is arranged on the surface of the lower mold plate, the upper cavity and the lower cavity are correspondingly arranged, and the upper mold plate and the lower mold plate are arranged oppositely. A complete and continuous spiral cavity is formed through combination; flash grooves are formed in the two sides of the spiral cavity and form a spiral structure matched with the spiral cavity. According to the utility model, the cavity is designed into a spiral structure, and the sealing strip is processed in a mould pressing vulcanization mode, so that the sealing strip with longer length can be processed under the condition that the area of a template is limited. The defect that in the prior art, long sealing strips are all machined through an extrusion technology is overcome, and the density of the formed sealing strips is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber molds, and particularly relates to a spiral sealing strip mold. Background Art

[0002] Sealing strips used in large equipment require relatively long lengths and are typically processed using an extrusion process to create continuous strips. However, under high-temperature and high-pressure operating conditions, extruded strips lack density and are prone to breakage during use, resulting in a loss of sealing function. While compression molding can ensure product quality, it is limited by mold size and is only suitable for processing small-sized strips and rings. Summary of the Invention

[0003] In view of the above-mentioned defects in the prior art, the purpose of the present invention is to provide a spiral sealing strip mold, which adopts a molding method to process sealing strips up to several meters long.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a spiral sealing strip mold, comprising an upper template and a lower template, the surface of the upper template is provided with a continuous spiral upper cavity, the surface of the lower template is provided with a continuous spiral lower cavity, the upper cavity and the lower cavity are arranged correspondingly and combined to form a complete and continuous spiral cavity; overflow grooves are provided on both sides of the spiral cavity, and the overflow grooves form a spiral structure that is compatible with the spiral cavity.

[0005] Furthermore, the upper template and the lower template are correspondingly provided with a plurality of through positioning holes, and positioning columns are assembled in the positioning holes. The upper template and the lower template are positioned and installed through the positioning columns and the positioning holes.

[0006] Furthermore, the cross-sections of the upper cavity and the lower cavity are symmetrical semicircular structures or arc structures.

[0007] Furthermore, the overflow trough is formed by a combination of an upper overflow trough arranged on the surface of the upper template and a lower overflow trough arranged on the surface of the lower template. The upper overflow trough and the lower overflow trough are symmetrically arranged. The cross-section of the upper overflow trough and the lower overflow trough is a V-shaped groove structure. The cross-section of the overflow trough formed by the combination of the upper overflow trough and the lower overflow trough is a diamond structure.

[0008] Furthermore, the overflow grooves on both sides of the spiral cavity are symmetrically arranged, and the overflow grooves on both sides are spaced apart from the spiral cavity.

[0009] Furthermore, the overflow grooves on both sides are spaced 0.05 mm apart from the spiral cavity.

[0010] Furthermore, the upper template is provided with a plurality of top screw holes on one side surface away from the upper cavity, and the lower template is provided with a plurality of top screw holes on one side surface away from the lower cavity, and the plurality of top screw holes of the upper template correspond to the plurality of top screw holes of the lower template.

[0011] Furthermore, a through center hole is correspondingly provided at the center of the upper template and the lower template, and the center hole is located at the center of the spiral line of the spiral cavity.

[0012] Furthermore, the upper cavity and the lower cavity are symmetrical arc-shaped structures with a cross-sectional depth of 3.11 mm and an arc radius of 3.15 mm; the cross-section of the overflow trough is a diamond-shaped structure with a depth of 1.8 mm and a width of 1.8 mm.

[0013] Furthermore, the upper template and the lower template are both square plates with a thickness of 30 mm; and the spiral cavity is a constant-speed spiral structure.

[0014] The beneficial effects of the present invention are as follows: the cavity is designed as a spiral structure, and the sealing strip is processed by molding and vulcanization. This allows the production of long sealing strips even with limited template area. This overcomes the drawback of the existing process of using extrusion to process long sealing strips, and ensures the density of the formed sealing strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural diagram of the spiral sealing strip mold of the utility model;

[0016] Figure 2 This is a partial cross-sectional view of the spiral sealing strip mold of the utility model;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] In the figure: 1. Upper template, 2. Lower template, 3. Spiral cavity, 4. Overflow groove, 5. Top screw hole, 6. Positioning hole, 7. Center hole. DETAILED DESCRIPTION

[0019] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0020] See attached Figure 1-2A spiral sealing strip mold includes an upper template 1 and a lower template 2. The surface of the upper template 1 is provided with a continuous spiral upper cavity, and the surface of the lower template 2 is provided with a continuous spiral lower cavity. The upper cavity and the lower cavity are arranged correspondingly and combined to form a complete and continuous spiral cavity 3; overflow grooves 4 are provided on both sides of the spiral cavity 3, and the overflow grooves 4 form a spiral structure adapted to the spiral cavity 3.

[0021] Furthermore, the upper template 1 and the lower template 2 are provided with four groups of through positioning holes 6 at the four corners, and positioning columns are installed in the positioning holes 6. The upper template 1 and the lower template 2 are positioned and installed through the positioning columns and the positioning holes 6.

[0022] Furthermore, the cross-sections of the upper cavity and the lower cavity are symmetrical semicircular structures or arc structures.

[0023] Furthermore, the overflow trough 4 is formed by a combination of an upper overflow trough provided on the surface of the upper mold plate 1 and a lower overflow trough provided on the surface of the lower mold plate 2. The upper and lower overflow troughs are symmetrically arranged, and the cross-section of the upper and lower overflow troughs is a V-shaped groove structure. The cross-section of the overflow trough formed by the upper and lower overflow troughs is a diamond-shaped structure. The overflow troughs 4 on both sides of the spiral cavity 3 are symmetrically arranged, and the overflow troughs 4 on both sides are spaced apart from the spiral cavity 3 by a distance of 0.05mm. The spacing between the spiral cavity 3 and the overflow trough 4 forms a thin-edge connection structure during rubber molding, facilitating the removal of waste material on both sides of the sealing strip.

[0024] Furthermore, the upper mold plate 1 is provided with four push-screw holes 5 on its surface away from the upper mold cavity, and the lower mold plate 2 is provided with four push-screw holes 5 on its surface away from the lower mold cavity. The four push-screw holes of the upper mold plate correspond to the four push-screw holes of the lower mold plate. The push-screw holes 5 secure the mold, tightening the upper mold plate 1 and the lower mold plate 2 for compression molding. The push-screw holes are provided on the outer side of the spiral mold cavity 3 to avoid affecting the strength and precision of the spiral mold cavity 3.

[0025] Furthermore, a through center hole 7 is correspondingly provided at the center of the upper mold plate 1 and the lower mold plate 2, and the center hole 7 is located at the center of the spiral line of the spiral cavity. The center hole 7 facilitates better exhaust of the rubber product during vulcanization.

[0026] See attached Figure 3This embodiment takes the production of a sealing strip with a diameter of 6.3mm as an example. In this embodiment, the upper and lower cavities are symmetrical arc-shaped structures with a cross-sectional depth of 3.11mm and an arc radius of 3.15mm. The cross-section of the overflow groove is a diamond-shaped structure with a depth of 1.8mm and a width of 1.8mm, that is, the upper and lower overflow grooves are both V-shaped groove structures with a depth of 0.9mm and a width of 1.8mm. The upper template 1 and the lower template 2 are both square plates with a thickness of 30mm. The spiral cavity 3 is a constant-speed spiral structure with the same distance between the spiral lines, which can save space. In a mold of the same area, the spiral lines are denser, and the molded sealing strip is longer, which can form a sealing strip with a length of about 5m-10m. It is used for sealing large equipment operating in a high-temperature and high-pressure environment of 300℃ and 1.5MPa. The mold structure of the present invention is not limited to the processing of sealing strips with a wire diameter of 6.3 mm, but can process sealing strips of all wire diameters. When processing sealing strips with different wire diameters and lengths, technical personnel in this field can make applicability improvements to the size of the spiral cavity 3 of the mold according to the wire diameter and length of the sealing strip, which all fall within the scope of protection of the present invention.

[0027] It should be noted that the parts not described in detail in the present invention are prior art.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0031] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] The above examples are merely preferred embodiments of the present invention. Obviously, the present invention is not limited to the above examples and is subject to numerous variations. Any variations that can be directly derived or conceived by a person skilled in the art from the disclosure of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A spiral sealing strip mold, characterized by: It includes an upper template and a lower template, the surface of the upper template is provided with a continuous spiral upper cavity, the surface of the lower template is provided with a continuous spiral lower cavity, the upper cavity and the lower cavity are arranged correspondingly and combined to form a complete and continuous spiral cavity; overflow grooves are provided on both sides of the spiral cavity, and the overflow grooves form a spiral structure compatible with the spiral cavity.

2. The spiral sealing strip mold according to claim 1, characterized in that: The upper template and the lower template are correspondingly provided with a plurality of through positioning holes, and positioning columns are assembled in the positioning holes. The upper template and the lower template are positioned and installed through the positioning columns and the positioning holes.

3. The spiral sealing strip mold according to claim 1, characterized in that: The cross sections of the upper cavity and the lower cavity are symmetrical semicircular structures or arc structures.

4. The spiral sealing strip mold according to claim 1, characterized in that: The overflow trough is formed by a combination of an upper overflow trough arranged on the surface of the upper template and a lower overflow trough arranged on the surface of the lower template. The upper overflow trough and the lower overflow trough are symmetrically arranged. The cross-section of the upper overflow trough and the lower overflow trough is a V-shaped groove structure. The cross-section of the overflow trough formed by the combination of the upper overflow trough and the lower overflow trough is a diamond structure.

5. The spiral sealing strip mold according to claim 4, characterized in that: The overflow grooves on both sides of the spiral cavity are symmetrically arranged, and the overflow grooves on both sides are spaced apart from the spiral cavity.

6. The spiral sealing strip mold according to claim 5, characterized in that: The overflow grooves on both sides are spaced 0.05 mm apart from the spiral cavity.

7. The spiral sealing strip mold according to claim 1, characterized in that: The upper template is provided with a plurality of top screw holes on a side surface away from the upper cavity, and the lower template is provided with a plurality of top screw holes on a side surface away from the lower cavity. The plurality of top screw holes of the upper template correspond to the plurality of top screw holes of the lower template.

8. The spiral sealing strip mold according to claim 1, characterized in that: A through center hole is correspondingly provided at the center of the upper template and the lower template, and the center hole is located at the center of the spiral line of the spiral cavity.

9. The spiral sealing strip mold according to any one of claims 1 to 8, characterized in that: The upper cavity and the lower cavity are symmetrical arc-shaped structures with a cross-sectional depth of 3.11 mm and an arc radius of 3.15 mm; the cross-sectional area of ​​the overflow trough is a diamond-shaped structure with a depth of 1.8 mm and a width of 1.8 mm.

10. The spiral sealing strip mold according to any one of claims 1 to 8, characterized in that: The upper template and the lower template are both square plates with a thickness of 30 mm; the spiral cavity is a constant speed spiral structure.

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