A method for manufacturing a soft edge ring suction cup

Abstract

The present invention relates to a method for manufacturing a soft-edge ring suction cup, wherein the soft-edge ring suction cup comprises a rigid substrate and an annular skirt, wherein the rigid substrate is composed of a base rubber, and the annular skirt is composed of a soft rubber having a lower hardness than the base rubber, and a soft skirt is formed along the outer circumference of the rigid substrate; the soft rubber and the base rubber are integrally hot-pressed and vulcanized, and their contact surfaces are fused. The design is reasonable and the conception is ingenious, and two rubbers with different hardness are simultaneously formed by hot-pressing and vulcanizing molding process, and while satisfying the different hardness of the substrate and the soft skirt, the two are connected by fusion, which is seamless, beautiful and firmly connected, and there is no risk of air leakage at all, and the suction force is extremely strong for objects with uneven or rough surfaces, and the objects will not fall off even after a long period of operation; and two manufacturing methods are proposed based on the hot-pressing and vulcanizing molding process, which are convenient and quick to process and are conducive to mass production.

Description

Technical Field

[0001] The invention relates to a suction device, in particular to a method for manufacturing a soft-rim suction cup. Background Art

[0002] Usually, vacuum lifters are often used in the transportation and construction of floors, tiles and decorative stones in building decoration. In addition to the common smooth surface, the surface of the decorative materials has many decorative materials with patterns, designs, concave and convex lines and rough surfaces, as the current requirements for decorative surfaces and the technological development of production processes. This puts higher requirements on the adsorption capacity of the suction cup. Ordinary suction cups are difficult to meet the requirements and are prone to fall off after long-term operation.

[0003] For example, patent: CN201020613526.4, an air pump type suction cup, discloses a suction cup made of a skeleton covered with rubber, which makes the middle base part of the suction cup have the same hardness as the skirt part (about 60-65HA). Such hardness can provide a strong holding force for the base to support its suction and transportation of objects, but the skirt is harder and has a small deformation, which greatly weakens the adsorption force on uneven or rough surfaces, and is easy to fall off after a long period of use;

[0004] To solve the above problems, currently in this industry, a flexible gasket is installed on the adsorption surface of the suction cup, such as patent 201980005884.0 vacuum suction cup clamp, which uses the gasket to enhance the adsorption of the suction cup; however, with this design, the suction cup is not beautiful and brings new problems, such as the gasket is easy to fall off and deform, and the gasket and the suction cup are easy to leak, the gasket has a short life, etc., which affects the use of the suction cup. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a method for manufacturing a soft-rim suction cup.

[0006] A soft-edge ring suction cup, the soft-edge ring suction cup comprises a rigid base body and an annular skirt, the rigid base body is made of base rubber, the annular skirt is made of soft rubber with a lower hardness than the base rubber, and the soft skirt is formed along the outer circumference of the rigid base body; the soft rubber and the base rubber are integrally formed by hot pressing and vulcanization, and the two rubbers are connected to form a whole; the fusion surface of the soft rubber and the base rubber is a neat arc surface.

[0007] The rigid matrix is ​​lined with a skeleton.

[0008] The base rubber is rubber with a hardness of 60-65HA.

[0009] The soft glue is rubber with a hardness of 25-30HA.

[0010] The annular soft skirt is a single-circle skirt.

[0011] The base glue is plastic with a hardness of 60-65HA.

[0012] The soft glue is plastic with a hardness of 25-30HA.

[0013] The annular soft skirt is a multi-circle skirt.

[0014] The method for preparing the soft edge ring suction cup adopts a one-step vulcanization process;

[0015] The one-time vulcanization process is a one-time vulcanization molding of the upper mold and the lower mold, which is as follows:

[0016] The base material is placed in the lower mold, and the lip material is placed on the base material in a ring along the outer side of the lower mold. The upper mold and the lower mold are closed to form a cavity that matches the soft edge ring suction cup. Under a certain set temperature and time, the base material is hot-pressed and vulcanized into a base rubber, and the lip material is hot-pressed and vulcanized into a soft rubber. In this process, the base rubber and the soft rubber are connected and integrated to form a soft edge ring suction cup.

[0017] The preparation method of the soft edge ring suction cup mentioned above, the secondary vulcanization process;

[0018] The secondary vulcanization process is a secondary hot pressing vulcanization molding of the upper pre-mold and the lower mold, and the upper mold and the lower mold, as follows:

[0019] 1) For the first vulcanization, the base material is placed in the lower mold, and the upper pre-mold and the lower mold are combined to form a cavity that matches the base rubber. A lip material groove is reserved on the base rubber, and a 0.5mm thick interference rubber is left between the upper pre-mold and the initial molding base material. At the set temperature, the base material is hot-pressed and vulcanized 20% to 30% to form the initial molding base material.

[0020] 2) Second vulcanization: open the mold and place the lip material in the lip material reserved groove on the initially formed base material. The upper mold and the lower mold are closed to form a cavity that matches the suction cup. Under the set high temperature and time, the base material and the lip material are hot-pressed and vulcanized. In this process, the base rubber and the soft rubber are seamlessly connected to form a soft edge ring suction cup. The fusion surface of the base rubber and the soft rubber is neat.

[0021] A suction lifter comprises a suction lifter seat and a suction cup installed on the suction lifter seat; the suction cup is the above-mentioned soft edge ring suction cup.

[0022] The advantages of the present invention are reasonable design and ingenious conception. Two rubbers with different hardnesses are formed simultaneously by hot pressing vulcanization molding process. While satisfying the different hardnesses of the base and the soft skirt, the two are connected by fusion, which is seamless, beautiful and firmly connected. There is no risk of air leakage at all. The suction cup has extremely strong adsorption force for uneven or rough surfaces and will not fall off after a long period of use. Two production methods are proposed based on the hot pressing vulcanization molding process. The processing is convenient and fast, which is conducive to mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional diagram of the extractor.

[0024] Figure 2 This is the front view of the extractor.

[0025] Figure 3 This is a schematic diagram of the single-circle skirt hem.

[0026] Figure 4 Schematic diagram of the adsorption of a single-circle skirt and a workpiece.

[0027] Figure 5 Schematic diagram of multi-circle skirt.

[0028] Figure 6 Schematic diagram of the adsorption of multi-circle skirt and workpiece.

[0029] Figure 7 It is a one-time vulcanization process.

[0030] Figure 8 Schematic diagram of soft-edged ring suction cup (one-time vulcanization process).

[0031] Fig. 9 for Figure 8 A partial enlarged schematic diagram.

[0032] Fig.10 It is a secondary vulcanization process (first vulcanization).

[0033] Fig.11 Schematic diagram of the initial molding base material.

[0034] Fig.12 It is a secondary vulcanization process (second vulcanization).

[0035] Fig.13 Schematic diagram of soft-edge ring suction cup (secondary hot pressing vulcanization process).

[0036] In the figure, the suction device seat 1, the soft edge ring suction cup 2, the rigid base 21, the base glue 211, the frame 212, the annular soft skirt 22, the soft glue 221, the handle 3, the manual vacuum pump 4, the pressure relief plate 5, the upper mold 6, the lower mold 7, the upper pre-mold 8, the base material 9, the initial molding base material 91, the lip material reserved groove 92, the lip material 10, and the workpiece 11. DETAILED DESCRIPTION

[0037] like Figure 1 , 2, a suction lifter, the suction lifter comprises a suction lifter seat 1 and a soft-rim suction cup 2 mounted on the suction lifter seat 1; a handle 3 is horizontally arranged on the mounting seat 11 on the suction lifter seat 1, a manual air pump 4 is installed inside the handle, and the manual air pump 4 is connected to the soft-rim suction cup 2 through the airway on the suction lifter seat 1; a degassing plate 5 is also installed on the airway of the suction lifter seat 1. When in use, the soft-rim suction cup 2 is brought into contact with the workpiece 11, and air is sucked by pressing the manual air pump 4, so that the soft-rim suction cup 2 is tightly attached to the workpiece 11, so that the handle 3 can be held to suck and carry the workpiece 11; when releasing the workpiece 11, the workpiece 11 can be easily released by simply pressing the degassing plate 5 to release air.

[0038] like Figure 3 The soft edge ring suction cup 2 includes a rigid base 21 and an annular soft skirt 22. The rigid base 21 is made of a base rubber 211, and the annular soft skirt 22 is made of a soft rubber 222 different from the base rubber 211. The soft skirt 22 is formed along the outer circumference of the rigid base 21; the soft rubber 211 and the base rubber 221 are vulcanized and formed as one piece, and their contact surfaces are fused; the annular soft skirt 22 is a single-circle skirt.

[0039] like Figure 4 The single-loop skirt absorbs the workpiece 11 (decorative materials with patterns, designs, concave and convex lines and rough surfaces), the single-loop skirt is deformed under pressure, and the bottom surface is flattened and contacts the workpiece 11. The bottom surface of the single-loop skirt is designed to be an inclined surface, so that after flattening, the contact area with the workpiece 11 is greatly increased, which can effectively reduce the risk of the workpiece 11 falling off.

[0040] like Figure 5 The annular soft skirt 22 is a multi-circle skirt.

[0041] like Figure 6 The multi-circle skirt absorbs the workpiece 11 (decorative materials with patterns, designs, concave and convex lines and rough surfaces); the multi-circle skirt is deformed under pressure, the bottom surface is flattened and contacts the workpiece, increasing the contact area. At the same time, multiple sealing cavities are formed between the multi-circle skirt and the workpiece 11, so that the risk of falling off from the workpiece 11 can be more effectively reduced.

[0042] The rigid base 22 is lined with a skeleton 212 .

[0043] like Figure 7-9 The one-time vulcanization process is a one-time vulcanization molding of the upper mold 6 and the lower mold 7, which is specifically as follows:

[0044] The skeleton 212 is placed in the lower mold 7, the base material 9 is placed on the skeleton 212, and the lip material 10 is placed on the base material 9 along the outer side of the lower mold 5. The upper mold 6 and the lower mold 7 are molded together to form a cavity matching the soft edge ring suction cup 2. Under a certain set temperature and time, the base material 9 is hot-pressed to wrap the skeleton 212 and vulcanized into the base glue 211, and the lip material 10 is hot-pressed to form and vulcanized into the soft glue 221; in this process, the base glue 211 and the soft glue 221 are fused to form the soft edge ring suction cup 2. Figure 8 ;Depend on Fig. 9 From the enlarged schematic diagram, it can be clearly seen that the occlusal surface between the base glue 211 and the soft glue 221 is irregular, which is not aesthetically pleasing. At the same time, the soft edge ring 22 is not uniform when adsorbed to the workpiece.

[0045] For this purpose, a secondary vulcanization process was further designed.

[0046] like Figure 10-13 The secondary vulcanization process is a secondary hot pressing vulcanization molding of the upper pre-mold 8 and the lower mold 7, the upper mold 6 and the lower mold 7, as follows:

[0047] 1) First vulcanization, such as Fig.10 , the skeleton 212 is placed in the lower mold 7, the base material 9 is placed on the skeleton 212, the upper pre-mold 8 is molded with the lower mold 7 to form a cavity matching the base glue 211, a lip material 10 groove is reserved on the base glue, and a 0.5mm thick interference glue is left between the upper pre-mold 8 and the primary molding base material 91. At a set temperature, the base material 9 is hot-pressed to wrap the skeleton 212 and vulcanized by 20% to 30% to form the primary molding base material 91, as shown in FIG. Fig.11 .

[0048] 2) Second vulcanization, such as Fig.12 , open the mold and place the lip material 10 in the lip material reserved groove 91 on the primary molding base material 91, close the upper mold 6 and the lower mold 7 to form a cavity matching the soft edge ring suction cup 2, and hot press vulcanize the base material 9 and the lip material 10 under the set high temperature time; in this process, the base glue 9 and the soft glue 10 are fused and connected to form a soft edge ring suction cup 2; the base glue 211 and the soft glue 221 have neat occlusal surfaces.

[0049] The above embodiments are only for illustrating the technical concept and features of the invention, and their purpose is to enable people familiar with the technology to understand the content of the invention and implement it accordingly, and they cannot be used to limit the protection scope of the invention. Any equivalent changes or modifications made according to the spirit of the invention should be included in the protection scope of the invention.

Claims

1. A method for preparing a soft edge ring suction cup, characterized in that: The soft edge ring suction cup comprises a rigid base body and an annular skirt, wherein the rigid base body is made of base rubber, and the annular skirt is made of soft rubber with a lower hardness than the base rubber, and a soft skirt is formed along the outer circumference of the rigid base body; the soft rubber and the base rubber are integrally formed by hot pressing and vulcanization, and the two rubbers are connected to form a whole; The preparation method adopts a primary vulcanization process or a secondary vulcanization process; The one-shot vulcanization process is a one-shot vulcanization molding of the upper mold and the lower mold, which is specifically as follows: the base material is placed in the lower mold, the lip material is placed on the base material along the outer side of the lower mold in a ring shape, the upper mold and the lower mold are molded together to form a cavity matching the soft edge ring suction cup, and at a certain set temperature and time, the base material is hot-pressed and vulcanized into a base rubber, and the lip material is hot-pressed and vulcanized into a soft rubber; in this process, the base rubber and the soft rubber are connected and integrated to form a soft edge ring suction cup; The secondary vulcanization process is the secondary hot pressing vulcanization molding of the upper pre-mold and the lower mold, and the upper mold and the lower mold, as follows: 1) For the first vulcanization, the base material is placed in the lower mold, and the upper pre-mold and the lower mold are combined to form a cavity that matches the base rubber. A lip material groove is reserved on the base rubber, and a 0.5mm thick interference rubber is left between the upper pre-mold and the initial molding base material. At the set temperature, the base material is hot-pressed and vulcanized by 20% to 30% to form the initial molding base material; 2) Second vulcanization: open the mold and place the lip material in the lip material reserved groove on the initially formed base material. The upper mold and the lower mold are closed to form a cavity that matches the suction cup. Under the set high temperature and time, the base material and the lip material are hot-pressed and vulcanized. In this process, the base rubber and the soft rubber are seamlessly connected to form a soft edge ring suction cup. The fusion surface of the base rubber and the soft rubber is neat.

2. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The rigid matrix is ​​lined with a skeleton.

3. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The base rubber is rubber with a hardness of 60-65HA.

4. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The soft glue is rubber with a hardness of 25-30HA.

5. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The annular soft skirt is a single-circle skirt.

6. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The base glue is plastic with a hardness of 60-65HA.

7. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The soft glue is plastic with a hardness of 25-30HA.

8. The method for preparing a soft edge ring suction cup according to claim 1, characterized in that: The annular soft skirt is a multi-circle skirt.

Images