Vulcanizing mold for special-shaped sealing ring

Abstract

A vulcanization mould of special-shaped sealing ring belongs to the pressing technical field of rubber material. The non-cavity surface of the upper mould and the lower mould is provided with a threaded hole, the mould is installed on the vulcanization equipment through the threaded hole, the upper mould and the lower mould are connected through a plurality of pairs of positioning pins and positioning pin sleeves, a material placing groove is arranged on the outer edge of the cavity of the lower mould, and a bevel tearing edge structure is arranged at the sealing lip part of the material placing groove. The special-shaped rubber product pressing quality can be guaranteed, the waste rate is reduced, and the process stability and production efficiency are improved. The material placing groove can prevent the appearance defect of product air bubble caused by directly placing the rubber material in the cavity. The bevel tearing edge structure can guarantee the tearing edge effect of the product, and the excess rubber material does not affect the size and appearance quality of the product. The material storing groove structure can store the excess rubber material in the material storing groove, and avoid the influence on the size and tearing edge effect of the product.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the pressing technology field of rubber material, specifically relates to a vulcanization mould of special-shaped sealing ring. BACKGROUND

[0002] The existing vulcanization mould is a tear edge structure at the parting position of the product, and the common tear edge structure is a vertical structure, which is easy to cause wear during the closing process of the upper and lower moulds, resulting in poor tear edge effect, incomplete tearing of the flash of the product, low service life,

[0003] In addition, the common overflow glue structure of the existing vulcanization mould is a reverse triangular structure, and the space for storing the excess glue is limited, so when the weight of the glue is large, it is impossible to store all the excess flash, so that the flash overflows and remains in the middle of the mould, affecting the thickness size and tear edge effect of the product. UTILITY MODEL CONTENTS

[0004] The utility model discloses a vulcanization mould of special-shaped sealing ring, which is simple in structure, low in cost, convenient to use, accurate in positioning and smooth in demoulding.

[0005] The utility model discloses the technical scheme that is adopted:

[0006] A vulcanization mould of special-shaped sealing ring, comprising an upper mould, a lower mould, a plurality of positioning pins and a plurality of positioning pin sleeves, wherein the non-cavity surface of the upper mould and the lower mould is provided with a threaded hole, the mould is installed on the vulcanization equipment through the threaded hole, the upper mould and the lower mould are connected through a plurality of pairs of positioning pins and positioning pin sleeves, the cavity surface of the lower mould is provided with a material placing groove, and the sealing lip part of the material placing groove is provided with a bevel tear edge port structure.

[0007] Compared with the prior art, the utility model has the following beneficial effects:

[0008] 1. The material placing groove of the utility model enables the cavity of the vulcanization mould to have a platform for placing glue, avoids the problem of air retention caused by directly packing glue in the cavity, enables the glue to be placed at the outer edge, and extrudes the glue into the cavity through the pressure of the vulcanization machine, so that the air in the cavity is discharged from the cavity, effectively avoiding the problem of air retention.

[0009] 2. The bevel tear edge port structure of the utility model can avoid the problems of poor tear edge effect and incomplete tearing of the flash of the product.

[0010] 3. The material storage groove structure of the utility model can ensure that the excess glue flows to the material storage groove part when the weight of the glue is large, ensure the tear edge effect of the product, and avoid the influence of the excess glue on the size and appearance quality of the product, thereby avoiding the influence of the size and tear edge effect of the product.

[0011] 4、The utility model discloses a machine tool flap directly drive mould starts opening, does not need manual mould. Can guarantee the pressing quality of special-shaped rubber product, reduces the rejection rate, improves the process stability, production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the structure schematic diagram of the utility model;

[0013] Figure 2 It is the lower mould schematic diagram of the utility model;

[0014] Figure 3 It is the upper mould schematic diagram of the utility model;

[0015] Figure 4 It is the lower mould section view of the utility model;

[0016] Figure 5 It is the upper mould section view of the utility model;

[0017] Figure 6 It is Figure 5 B part enlarged view of;

[0018] Figure 7 It is Figure 5 C part enlarged view of;

[0019] Figure 8 It is Figure 5 B part and C part closing mould schematic diagram of;

[0020] Figure 9 It is the material swinging groove schematic diagram of the utility model;

[0021] Figure 10 It is the inclined surface edge tearing mouth structure schematic diagram of the utility model;

[0022] Figure 11 It is the common edge tearing mouth structure schematic diagram;

[0023] Figure 12 It is the material storage groove schematic diagram of the utility model;

[0024] Figure 13 It is the common material storage groove schematic diagram;

[0025] Figure 14 It is spring installation schematic diagram.

[0026] Wherein: 1, upper mould;2, lower mould;3, positioning pin;4, positioning pin sleeve;5, material swinging groove;6, inclined surface edge tearing mouth structure;7, material storage groove;8, spring installation cavity;9, screw hole two;10, spring;11, screw. DETAILED DESCRIPTION

[0027] In order to better understand the purpose, structure and function of the utility model, the utility model is described in further detail below with reference to the drawings.

[0028] As Figures 1-14 shown, the utility model provides a vulcanization mold of special-shaped sealing ring, including upper mold 1, lower mold 2, multiple positioning pins 3 and multiple positioning pin sleeves 4;The upper mold 1 and the lower mold 2 are oppositely arranged, and the non-cavity surface of the upper mold 1 and the lower mold 2 is provided with a threaded hole, the mold is installed on the vulcanization equipment through the threaded hole, the upper mold 1 and the lower mold 2 are positioned and connected through multiple pairs of positioning pins 3 and positioning pin sleeves 4, so as to prevent stringing, the cavity outer edge of the lower mold 2 is provided with a material placing groove 5, which facilitates the placement of the rubber material of the product. And the sealing lip part of the material placing groove 5 is provided with a beveled edge tearing structure 6, which can improve the service life of the mold edge tearing port.

[0029] The cooperation surface between the upper mold 1 and the lower mold 2 is provided with a material storage groove 7, which can avoid the influence of the size of the product due to the large weight of the rubber.

[0030] The spring installation cavity 8 and the threaded hole two 9 are opened at the non-cavity of the upper surface of the lower mold 2, the lower end of the spring 10 is arranged in the spring installation cavity 8, and the bottom of the spring 10 is fixed on the threaded hole two 9 through the screw 11. The spring 10 is used for the exhaust of the rubber product during the mold vulcanization process.

[0031] The positioning pin 3 is installed on the cavity surface of the upper mold 1, and the positioning pin sleeve 4 is installed on the lower mold 2.

[0032] Multiple positioning pins 3 are divided into long positioning pins and short positioning pins.

[0033] Multiple cavities are arranged on the lower mold 2. The vulcanization efficiency is improved.

[0034] The upper mold 1 and the lower mold 2 are installed on the vulcanization equipment through the threaded hole. After the positioning pin 3 and the positioning pin sleeve 4 are installed on the mold respectively, the cooperation gap is 0-0.05mm, which can ensure that the special-shaped rubber sealing ring is not dislocated during vulcanization. The special-shaped ring mold is designed with two beveled edge tearing structure 6, and the excess flash can be directly removed after the special-shaped sealing ring is vulcanized and formed.

[0035] After the vulcanization mold is installed on the flat vulcanization machine, the temperature of the equipment is heated to the vulcanization temperature corresponding to the rubber material, the molded rubber blank is placed on the placing groove 5 of the lower mold 2, the automatic start button of the equipment is pressed, at this time, the long positioning pin on the upper mold 1 is first matched with the positioning pin sleeve 4 on the lower mold 2, then the short positioning pin on the upper mold 1 is matched with the positioning pin sleeve 4 on the lower mold 2, so that the upper mold 1 and the lower mold 2 of the mold are tightly combined without movement, after the rubber material is vulcanized, the demolding button of the flat vulcanization machine is pressed, the upper mold 1 and the lower mold 2 of the mold are separated, the product is left on the lower mold 2, and the vulcanized product can be taken off from the lower mold 2 by using the air gun.

[0036] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application belong to the scope protected by the utility model.

Claims

1. A vulcanization mold for a profiled sealing ring, characterized in that: The mould includes an upper mould (1), a lower mould (2), a plurality of positioning pins (3) and a plurality of positioning pin sleeves (4); the non-cavity surface of the upper mould (1) and the lower mould (2) is provided with a threaded hole, the mould is installed on a vulcanizing equipment through the threaded hole, the upper mould (1) and the lower mould (2) are connected in position through a plurality of pairs of positioning pins (3) and positioning pin sleeves (4), the outer edge of the cavity of the lower mould (2) is provided with a material placing groove (5), and the sealing lip part of the material placing groove (5) is provided with a bevel edge tearing structure (6).

2. The vulcanization mold for a profiled sealing ring according to claim 1, characterized in that: The upper mould (1) and the lower mould (2) are provided with a material storing groove (7) between the matching surfaces.

3. The vulcanization mold for a profiled sealing ring according to claim 1, characterized in that: A spring installation cavity (8) and a threaded hole two (9) are opened in the upper surface of the lower mould (2) and are communicated, the lower end of a spring (10) is arranged in the spring installation cavity (8), and the bottom of the spring (10) is fixed on the threaded hole two (9) through a screw (11).

4. The vulcanization mold for a profiled sealing ring according to claim 2, characterized in that: The positioning pin (3) is installed on the cavity surface of the upper mould (1), and the positioning pin sleeve (4) is installed on the lower mould (2).

5. The vulcanization mold for a profiled sealing ring according to claim 4, characterized in that: The matching gap between the positioning pin (3) and the positioning pin sleeve (4) is 0-0.05 mm.

6. The vulcanization mold for a profiled sealing ring according to claim 5, characterized in that: A plurality of the positioning pins (3) are divided into long positioning pins and short positioning pins.

7. The vulcanization mold for a profiled sealing ring according to claim 5, characterized in that: A plurality of cavities are arranged on the lower mould (2).

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