Rubber ring shaping vulcanization forming mold

Abstract

The utility model discloses a rubber ring shaping, vulcanizing and forming die. The rubber ring shaping vulcanization forming die comprises an upper die and a lower die, an upper parting surface is arranged at the bottom of the upper die, a plurality of upper annular grooves are formed in the upper parting surface, a lower parting surface is arranged at the top of the lower die, a plurality of lower annular grooves are formed in the lower parting surface, and the upper annular grooves and the lower annular grooves are spliced to form a cavity used for vulcanizing a rubber ring. A shaping boss used for being connected with the ring in a sleeved mode is arranged on the inner side of the lower annular groove, the outer diameter of the shaping boss is gradually reduced from the bottom to the top, and a shaping groove matched with the shaping boss is formed in the inner side of the upper annular groove. The utility model solves the problems that the production cost is increased and the production efficiency is influenced due to more working procedures in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber molding, in particular to a rubber ring shaping and vulcanization molding die. Background Art

[0002] After the ring material used to produce the O-ring is extruded, its shape is often out of round, and it does not match the cavity of the O-ring vulcanization molding mold at all. Therefore, the ring material needs to be shaped before the O-ring is vulcanized. Currently, a centrifugal shaping machine (publication number CN113183444B, titled "A Ring Material Centrifugal Shaping Machine") is used to perform this work. However, this operation will add an extra process, which not only increases production costs, but also affects production efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a rubber ring shaping and vulcanization molding die which can shorten the production process, reduce production costs and improve production efficiency.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the rubber ring shaping and vulcanization molding die of the utility model is:

[0005] A rubber ring shaping and vulcanization molding die comprises an upper die and a lower die, wherein an upper parting surface is arranged at the bottom of the upper die, and a plurality of upper annular grooves are arranged on the upper parting surface, and a lower parting surface is arranged at the top of the lower die, and a plurality of lower annular grooves are arranged on the lower parting surface, and the upper and lower annular grooves are assembled to form a cavity for vulcanizing the rubber ring, and a shaping boss for sleeve ring material is arranged on the inner side of the lower annular groove, and the outer diameter of the shaping boss gradually decreases from the bottom to the top, and a shaping groove matching the shaping boss is arranged on the inner side of the upper annular groove.

[0006] Preferably, the distance L between the bottom edge of the shaping boss and the inner edge of the lower annular groove is 0.5-1.5 mm.

[0007] Preferably, the upper mold includes an upper mold plate, an upper parting surface is arranged on the bottom surface of the upper mold plate, an upper base plate is arranged on the top of the upper mold plate, and upper mold mounting grooves are opened on both sides of the upper base plate; the lower mold includes a lower mold plate, a lower parting surface is arranged on the top surface of the lower mold plate, a lower base plate is arranged on the bottom of the lower mold plate, and lower mold mounting grooves are opened on both sides of the lower base plate.

[0008] Preferably, guide pillars are provided at the four corners of the upper template, and guide sleeves cooperating with the guide pillars are provided at the four corners of the lower template.

[0009] Preferably, the lower parting surface is provided with a clearance surface, and a plurality of exhaust grooves are opened on the clearance surface. The exhaust grooves are located between adjacent lower annular grooves and are arranged in a crisscross manner.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] During vulcanization molding, the ring material is sleeved on the inclined side wall of the shaping boss. As the upper mold descends, the ring material is squeezed and pushed to slide up and down on the inclined side wall of the shaping boss to complete the shaping. Then the mold is closed for vulcanization. The shaping and vulcanization processes of the ring material are combined into one, thereby shortening the production process, reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the rubber ring shaping and vulcanization molding die of the utility model;

[0013] Figure 2 yes Figure 1 Enlarged view of point C;

[0014] Figure 3 It is a structural diagram of the lower die;

[0015] Figure 4 It is a structural diagram of the upper mold.

[0016] Among them, 1 is an upper mold, 11 is an upper template, 111 is an upper parting surface, 112 is an upper annular groove, 113 is a shaping groove, 12 is an upper base plate, 121 is an upper mold mounting groove, 13 is a guide column, 2 is a lower mold, 21 is a lower template, 211 is a lower parting surface, 212 is a lower annular groove, 213 is an air avoidance surface, 214 is an exhaust groove, 215 is a shaping boss, 22 is a lower base plate, 221 is a lower mold mounting groove, 23 is a guide sleeve, and 3 is a cavity. DETAILED DESCRIPTION

[0017] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0018] like Figures 1 to 4As shown, a rubber ring shaping and vulcanization molding mold includes an upper mold 1 and a lower mold 2, the upper mold includes an upper mold plate 11, the top of the upper mold plate is fixedly connected to an upper base plate 12, upper mold mounting grooves 121 are provided on the front and rear sides of the upper base plate, an upper parting surface 111 is processed on the bottom surface of the upper mold plate, and a plurality of upper annular grooves 112 arranged in a matrix are provided on the upper parting surface, the lower mold includes a lower mold plate 21, the bottom of the lower mold plate is fixedly connected to a lower base plate 22, and a lower mold mounting groove 221 is provided on the front and rear sides of the lower base plate, a lower parting surface 211 is processed on the top of the lower mold, and a plurality of lower annular grooves 212 corresponding to the upper annular grooves are provided on the lower parting surface, and the upper and lower annular grooves are combined to form a cavity 3 for vulcanizing the rubber ring, guide pillars 13 are installed at the four corners of the upper mold plate, and guide pillars 13 are installed at the four corners of the lower mold plate. A guide sleeve 23 is installed to cooperate with the guide column. The area of ​​the lower parting surface that is offset 10mm outward based on the outer edge of the lower annular groove is used as a sealant. The rest of the surface is processed into an air avoidance surface 213. A number of exhaust grooves 214 are provided on the air avoidance surface. The exhaust grooves are located between adjacent lower annular grooves and are arranged in a criss-cross pattern. A shaping boss 215 for sleeve-fitting the ring material is integrally formed on the inner side of the lower annular groove. The outer diameter of the shaping boss gradually decreases from bottom to top (the draft angle α of the outer wall of the shaping boss is 25°), the height H of the shaping boss is 25mm, the distance L between the bottom edge of the shaping boss and the inner edge of the lower annular groove is 1mm, and the 1mm gap is used as the overflow space on the inner side of the ring material. A shaping groove 113 matching the shaping boss is provided on the inner side of the upper annular groove.

[0019] The specific working process and principle of the utility model are as follows: since the diameter of the top of the shaping boss is relatively small, it is convenient to insert the ring material in the out-of-round state. After all the shaping bosses on the lower template are inserted with the ring material, the upper template is driven to descend, and the guide pillars are first inserted into the guide pillars for guidance to ensure that the shaping grooves are sleeved on the outer side of the shaping bosses one by one, and the ring material is pushed to move downward. The ring material is shaped during the downward movement and is pushed into the cavity formed by the upper and lower annular grooves for vulcanization. The utility model combines the ring material shaping and vulcanization processes into one by setting a conical integral boss on the lower mold, thereby achieving the purpose of reducing the process, not only reducing the production cost, but also improving the production efficiency.

Claims

1. A rubber ring shaping and vulcanizing mold, comprising an upper mold and a lower mold, wherein the bottom of the upper mold is provided with an upper parting surface, and the upper parting surface is provided with a plurality of upper annular grooves, and the top of the lower mold is provided with a lower parting surface, and the lower parting surface is provided with a plurality of lower annular grooves, and the upper and lower annular grooves are combined to form a cavity for vulcanizing the rubber ring, Features: The inner side of the lower annular groove is provided with a shaping boss for sleeve ring material, the outer diameter of the shaping boss gradually decreases from the bottom to the top, and the inner side of the upper annular groove is provided with a shaping groove matching the shaping boss.

2. The rubber ring shaping and vulcanization molding die according to claim 1, Features: The distance L between the bottom edge of the shaping boss and the inner edge of the lower annular groove is 0.5-1.5 mm.

3. The rubber ring shaping and vulcanization molding die according to claim 1, Features: The upper mold includes an upper mold plate, an upper parting surface is arranged on the bottom surface of the upper mold plate, an upper base plate is arranged on the top of the upper mold plate, and upper mold mounting grooves are opened on both sides of the upper base plate; the lower mold includes a lower mold plate, a lower parting surface is arranged on the top surface of the lower mold plate, a lower base plate is arranged on the bottom of the lower mold plate, and lower mold mounting grooves are opened on both sides of the lower base plate.

4. The rubber ring shaping and vulcanization molding die according to claim 3, Features: Guide pillars are arranged at the four corners of the upper template, and guide sleeves matched with the guide pillars are arranged at the four corners of the lower template.

5. The rubber ring shaping and vulcanization molding die according to claim 1, Features: The lower parting surface is provided with a clearance surface, and a plurality of exhaust grooves are opened on the clearance surface. The exhaust grooves are located between adjacent lower annular grooves and are arranged in a crisscross manner.

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