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Mould with diameter-variable rubber core and method for manufacturing diameter-variable rubber core by adopting mould

A mold and rubber core technology, which is applied in the mold field of variable diameter rubber cores, can solve the problems of stopping drilling, high labor intensity of well control personnel, and long delay time, so as to improve applicability, reduce labor intensity and improve work efficiency Effect

Pending Publication Date: 2017-08-29
四川新为橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the labor intensity of the well control personnel is high, the delay time is long, and even the drilling may be stopped under special circumstances.

Method used

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  • Mould with diameter-variable rubber core and method for manufacturing diameter-variable rubber core by adopting mould
  • Mould with diameter-variable rubber core and method for manufacturing diameter-variable rubber core by adopting mould
  • Mould with diameter-variable rubber core and method for manufacturing diameter-variable rubber core by adopting mould

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like Figure 1~6 The mold of a rubber variable-diameter rubber core is shown, and the mold includes an upper mold 11 and a lower mold 12 matched in size, an arc-shaped core mold (not shown) and an arc-shaped outer mold located on the core mold. The metal skeleton group 1 on the edge, the metal skeleton group 1 includes a plurality of metal skeleton units 2, each of the metal skeleton units 2 is provided with a fan-shaped connection part, and the adjacent metal skeleton units 2 pass through the fan-shaped connection part in turn The adjustable angle is connected to form a metal skeleton group 1 with a circular arc structure. The two ends of the metal skeleton group 1 are respectively provided with a block group 3, and the block group 3 connects the metal skeleton group 1 through a block pin 14. fixed, the core mold and the metal skeleton group 1 are located inside the lower mold 12, and the upper mold 11 is provided with a rubber injection tube 13, and the rubber injecti...

Embodiment 2

[0036]Based on Example 1, such as Figure 1~3 As shown, the fan-shaped connecting portion includes a symmetrically arranged upper fan-shaped connecting portion 4 and a lower fan-shaped connecting portion 5, the upper fan-shaped connecting portion 4 and the lower fan-shaped connecting portion 5 are connected by a metal connecting plate 6, and the upper fan-shaped connecting portion The connecting portion 4 and the lower fan-shaped connecting portion 5 all include a fan-shaped pressing block 7 and a fan-shaped step 8 arranged side by side, the fan-shaped pressing block 7 is higher than the fan-shaped step 8, and the outer edge of the fan-shaped pressing block 7 is provided with Groove 9, the edge of the fan-shaped step 8 is provided with a hook body 10 higher than the edge of the fan-shaped step 8, and the outer edge of the groove 9 matches the inner edge of the hook body 10 in size.

[0037] When the metal skeleton units 2 are arranged and connected in sequence, the fan-shaped ...

Embodiment 3

[0039] Based on Example 2, such as Figure 1~3 As shown, the central angle of the fan-shaped pressing block 7 is 20-40°, and the central angle of the fan-shaped step 8 is 20-40°, wherein it is more preferable that the central angle of the fan-shaped pressing block 7 is 30°, and the fan-shaped step 8 The central angle of 8 is 30°. It can ensure the angle-adjustable rotation connection when the fan-shaped pressing block 7 and the fan-shaped step 8 are connected, and then the radius of the metal skeleton group can be adjusted within a certain range.

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Abstract

The invention discloses a mould with a diameter-variable rubber core and a method for manufacturing the diameter-variable rubber core by adopting the mould. The mould comprises a circular-arc-shaped core mould and a metallic framework set, wherein the metallic framework set is located at the circular-arc-shaped outer edge of the core mould. The metallic framework set comprises a plurality of metallic framework units, each metallic framework unit is provided with a fan-shaped connecting part, and each two adjacent metallic framework units are sequentially connected in an angle-adjustable mode through the corresponding fan-shaped connecting part to form the metallic framework set with a circular-arc-shaped structure; and cushion block sets are arranged at the two ends of the metallic framework set correspondingly, and the cushion block sets fix the metallic framework set through cushion block pins. Diameter-variable rubber core products can be adjusted within a certain radius range through the radius-adjustable design inside the metallic framework set, the diameter-variable purpose is achieved, and the strength and the hardness of the diameter-variable rubber core products are improved; and drilling tools with multiple different specifications can be adapted, the labor intensity of workers is relieved, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of injection molds and production of rubber products, in particular to a mold for variable-diameter rubber cores and a method for producing variable-diameter rubber cores using the mold. Background technique [0002] In the process of oil drilling and drilling operations, the blowout preventer (ie blowout preventer) installed at the wellhead and the rubber rubber core of the main accessories are indispensable. Among them, the rubber rubber core is the rubber part that plays a sealing role in the oil well blowout preventer. It is divided into three types: ram type, rotary type and multi-effect function type. It is used to prevent blowout during oil development and geological drilling. Its function is through the control system. Hold various specifications of drill pipes and downhole tools tightly, seal the wellhead, and prevent oil and gas from blowing out. Existing blowout prevention rubber cores are common...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29C45/26
CPCB29C45/14065B29C45/14631B29C45/26B29C2045/14147
Inventor 周永国吴向东冯旭海
Owner 四川新为橡塑有限公司
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