阅读说明：本技术 运用于柔性石墨金属缠绕垫片的加工方法 (Processing method applied to flexible graphite metal winding gasket ) 是由 俞林芳 于 2019-09-17 设计创作，主要内容包括：本发明涉及一种运用于柔性石墨金属缠绕垫片的加工方法,所属密封垫片的制造技术领域,先将钢板通过冲床对外环、内环的毛坯件进行一次冲压成型,接着对外环、内环的内外圆进行精车加工。完成外环、内环的精车加工后,再将外环、内环采用平台升降调节架调节输送平台与砂带磨机架的间距,完成对外环、内环两端面的砂带水磨过程。同时缠绕弹性组件由缠绕机架上的压料轮和导向缠绕轮共同作用下,将石墨带与金属钢带相贴合式交错缠绕加工。最后采用缠绕弹性组件定位压盘进行油压下压与定位底盘相合模后,完成装配过程。具有定位准确、安装方便、生产效率高、密封性能好和质量稳定性好的优点。避免装配缺陷,提高产品质量,同时缩短加工周期。(The invention relates to a processing method applied to a flexible graphite metal wound gasket, belonging to the technical field of manufacturing of sealing gaskets. After finishing the finish turning of the outer ring and the inner ring, adjusting the distance between the conveying platform and the abrasive belt grinding machine frame by adopting the platform lifting adjusting frame for the outer ring and the inner ring, and finishing the abrasive belt water grinding process of two end surfaces of the outer ring and the inner ring. Meanwhile, the winding elastic component is used for processing graphite belts and metal steel belts in a laminating type staggered winding manner under the combined action of a pressing wheel and a guide winding wheel on the winding rack. And finally, the winding elastic component positioning pressure plate is adopted to perform oil pressure pressing and match the positioning chassis, and then the assembling process is completed. The device has the advantages of accurate positioning, convenient installation, high production efficiency, good sealing performance and good quality stability. The assembly defect is avoided, the product quality is improved, and the processing period is shortened.)

1. A processing method applied to a flexible graphite metal winding gasket is characterized by comprising the following operation steps:

the first step is as follows: firstly, a steel plate is subjected to one-time punch forming on blank pieces of an outer ring (1) and an inner ring (4) through an upper die (6) and a lower die (8) of a punch press, allowance is reserved for the sizes of the inner circle and the outer circle of the outer ring (1) and the inner ring (4), and then the inner circle and the outer circle of the outer ring (1) and the inner ring (4) are subjected to finish turning through machining;

the second step is that: after finishing the finish turning of the outer ring (1) and the inner ring (4), placing the outer ring (1) and the inner ring (4) on a conveying platform (16), adjusting the distance between the conveying platform (16) and an abrasive belt mill frame (18) by adopting a platform lifting adjusting frame (19), simultaneously providing grinding fluid for the abrasive belt mill frame (18) by a saponification fluid supply tank (17), finishing the abrasive belt water milling process of two end surfaces of the outer ring (1) and the inner ring (4), and filtering and refluxing the grinding fluid into the saponification fluid supply tank (17) through a grinding fluid convergence frame (20);

the third step: the winding elastic component (2) is processed by attaching and alternately winding a graphite belt (25) in a graphite belt reel (26) and a metal steel belt (28) in a steel belt reel (29) under the combined action of a material pressing wheel (22) and a guide winding wheel (24) on a winding frame (21), after the required number of turns is reached, the graphite belt (25) and the metal steel belt (28) are cut off, and the graphite belt (25) and the metal steel belt (28) are fixed at the beginning and the tail end of the winding elastic component (2) for standby application in a spot welding mode;

the fourth step: the outer ring (1) and the inner ring (4) which are processed are nested on a positioning chassis (33) which is fastened with a flange type bolt of an oil pressure rack (34), a plurality of non-metal filling rings (3) are sleeved outside the inner ring (4), electric welding on the beginning and the tail end of the winding elastic component (2) is removed, the winding elastic component is nested on a winding elastic component positioning pressure plate (32) which is connected with a flange of an oil pressure lifting frame (31), the winding elastic component positioning pressure plate (32) is adopted to carry out oil pressure pressing and is matched with the positioning chassis (33), and the winding elastic component (2) is nested between the non-metal filling rings (3) and the outer ring (1).

2. The method as claimed in claim 1, wherein said flexible graphite metal wound gasket comprises: when the outer ring (1) and the inner ring (4) are punched to be molded, an upper die (6) on an upper die frame (5) of a punching machine is subjected to phase displacement type nesting guide through more than 2 punch positioning guide rods (9) and punch guide columns (10) on a punching die base (13), so that the upper die (6) and the lower die (8) are coaxially matched, and the upper die (6) is internally provided with a top ring (7), and the punching die base (13) is provided with an inner hole top column (15) extending to the upper end surface of the lower die (8), the upper die (6) and the lower die (8) are subjected to matched punch forming.

3. The method as claimed in claim 2, wherein said flexible graphite metal wound gasket comprises: lower mould (8) are installed on lower membrane frame (11), lower membrane frame (11) cup joint with punch press guide post (10) mutually movable, be equipped with between lower membrane frame (11) and stamping die base (13) a plurality of hydraulic buffer (14) that are located between hole fore-set (15) and punch press guide post (10) and be equidistant annular distribution, all be equipped with between lower membrane frame (11) and stamping die base (13) buffer spring (12) that cup joint mutually with punch press guide post (10).

4. The method as claimed in claim 1, wherein said flexible graphite metal wound gasket comprises: the conveying platform (16) and the abrasive belt grinding machine frame (18) are arranged perpendicularly, when the conveying platform (16) conveys the outer ring (1) and the inner ring (4) to the abrasive belt grinding machine frame (18), an abrasive belt on the abrasive belt grinding machine frame (18) rotates in a rolling mode under the driving of a motor, and the abrasive belt, the outer ring (1) and the inner ring (4) are washed by grinding fluid while the grinding process is completed.

5. The method as claimed in claim 1, wherein said flexible graphite metal wound gasket comprises: the pressing wheel (22) and the guiding winding wheel (24) are fixed at the upper end of the winding rack (21) through a driving rotating shaft (23) in a bearing type limiting sleeved mode, the lower end of the driving rotating shaft (23) is connected with a driving motor (30) of the winding rack (21) through a flange type bolt, the rotation of the rated number of turns is completed, and the two driving motors (30) rotate in opposite directions at equal rotating speeds.

6. The method as claimed in claim 5, wherein said flexible graphite metal wound gasket comprises: graphite belt dish (26), steel band dish (29) are fixed in winding frame (21) upper end through driven shaft (27) looks bearing type spacing cup joint, through direction winding wheel (24) pulling graphite tape (25) and metal steel band (28), by pressure pulley (22) to the spacing of winding the number of turns, realize the course of working of winding elastic component (2).

7. The method as claimed in claim 1, wherein said flexible graphite metal wound gasket comprises: the oil pressure assembly process of the winding elastic component positioning pressure plate (32) and the positioning chassis (33) adopts the oil pressure lifting frame (31) to provide downward pressing power, and a plurality of oil pressure guide posts (35) at the lower end of the oil pressure lifting frame (31) are nested with the oil pressure positioning guide rod (36) at the upper end of the oil pressure rack (34) in a phase displacement type positioning guide manner, so that the stability of the assembly quality is ensured.

Technical Field

The invention relates to the technical field of manufacturing of sealing gaskets, in particular to a processing method applied to a flexible graphite metal wound gasket.

Background

The metal wound gasket is a widely applied sealing gasket at present, is a sealing element at the flange joint of a steam pipeline, a petroleum pipeline and the like, is generally in a ring shape, and has four types of internal and external reinforcement, internal reinforcement, external reinforcement and internal and external reinforcement. In chemical industry, pharmacy industry, carry the liquid medicine in the production process through the pipeline concatenation, guarantee sealed function through winding gasket between the pipeline of concatenation. The winding gasket is composed of a support ring arranged on the inner ring, a positioning ring arranged on the outer ring and a middle filling sealing structure wound and filled between the support ring and the positioning ring. The support ring and the positioning ring are usually made of metal materials, and the intermediate filling and sealing structure can use graphite or polytetrafluoroethylene according to different use environments.

Present assembly is mainly with manual assembly, and when the mode of adopting artifical hammering was squeezed into the outer lane with the inner circle, it was damaged by the crushing to cause the annular arch of winding ring surface very easily, perhaps twines the ring perk to cause the installation degree of difficulty great, production efficiency is lower, and influence the final sealing performance of product, the rejection rate is higher.

Disclosure of Invention

The invention mainly solves the defects of higher installation difficulty, lower production efficiency, poor sealing performance and higher rejection rate in the prior art, and provides a processing method applied to a flexible graphite metal wound gasket, which has the advantages of accurate positioning, convenient installation, high production efficiency, good sealing performance and good quality stability. The problem of intensity of labour is big is solved. The assembly defect is avoided, the product quality is improved, and the processing period is shortened.

The technical problem of the invention is mainly solved by the following technical scheme:

a processing method applied to a flexible graphite metal winding gasket comprises the following operation steps:

the first step is as follows: firstly, a steel plate is subjected to one-time punch forming on blank pieces of the outer ring and the inner ring through an upper die and a lower die of a punch press, allowance is reserved for the sizes of the inner circle and the outer circle of the outer ring and the inner ring, and then finish turning is carried out on the inner circle and the outer circle of the outer ring and the inner ring through machining.

The second step is that: after finishing the finish turning processing of the outer ring and the inner ring, placing the outer ring and the inner ring on the conveying platform, adjusting the distance between the conveying platform and the abrasive belt grinding machine frame by adopting the platform lifting adjusting frame, simultaneously providing grinding fluid for the abrasive belt grinding machine frame by the saponified fluid supply tank, finishing the abrasive belt water grinding process of the two end faces of the outer ring and the inner ring, and filtering and refluxing the grinding fluid to the saponified fluid supply tank through the grinding fluid gathering frame.

The third step: the winding elastic component is processed by attaching graphite belts in the graphite belt discs and metal steel belts in the steel belt discs in a staggered winding mode under the combined action of the pressure wheel and the guide winding wheel on the winding rack, after the required number of turns is reached, the graphite belts and the metal steel belts are cut off, and the winding elastic component is fixed at the beginning and the tail end for standby application in a spot welding mode.

The fourth step: the outer ring and the inner ring which are processed are nested on a positioning chassis which is fastened by a flange type bolt of an oil pressure frame, a plurality of nonmetal filling rings are sleeved outside the inner ring, electric welding on the beginning and the end of the winding elastic component is removed, the winding elastic component is nested in a winding elastic component positioning pressure plate which is connected with a flange of an oil pressure lifting frame, the winding elastic component positioning pressure plate is adopted to carry out oil pressure pressing and is matched with the positioning chassis, and the winding elastic component is nested between the nonmetal filling rings and the outer ring.

Preferably, when the outer ring and the inner ring are punched, an upper die on an upper die frame of the punch press is subjected to phase-shift nested guiding through more than 2 punch press positioning guide rods and punch press guide posts on a punch press die base, so that the upper die and the lower die are coaxially assembled, and the upper die and the lower die are formed by matching an inner hole top post which is arranged in the upper die and is provided with the top ring and the punch press die base and extends to the upper end surface of the lower die with the upper die and the lower die in a punching manner.

Preferably, the lower die is mounted on the lower die frame, the lower die frame is movably sleeved with the punch guide posts, a plurality of hydraulic buffers which are located between the inner hole top posts and the punch guide posts and are distributed in an equally-spaced annular mode are arranged between the lower die frame and the punch base, and buffer springs sleeved with the punch guide posts are arranged between the lower die frame and the punch base.

Preferably, the conveying platform is perpendicular to the frame of the belt sander, and when the conveying platform conveys the outer ring and the inner ring to the frame of the belt sander, an abrasive belt on the frame of the belt sander is driven by the motor to rotate in a rolling manner, so that the abrasive belt, the end faces of the outer ring and the inner ring complete the sanding process while being washed by the grinding fluid.

Preferably, the pressing wheel and the guiding winding wheel are fixed at the upper end of the winding rack in a bearing-type limiting and sleeving manner through a driving rotating shaft, the lower end of the driving rotating shaft is connected with a driving motor of the winding rack through a flange-type bolt to complete the rotation of rated turns, and the two driving motors rotate in opposite directions at equal rotating speeds.

As preferred, graphite tape dish, steel tape dish are fixed in winding frame upper end through the spacing cup joint of driven shaft bearing formula, through direction winding wheel pulling graphite tape and metal steel band, by the spacing of swager wheel pair number of turns of winding, realize winding elastic component's course of working.

Preferably, in the oil pressure assembly process of the winding elastic component positioning pressure plate and the positioning chassis, the oil pressure lifting frame is used for providing downward pressing power, and the oil pressure guide posts at the lower end of the oil pressure lifting frame are nested with the oil pressure positioning guide rods at the upper end of the oil pressure rack in a mutually-displaced positioning and guiding manner, so that the stability of the assembly quality is ensured.

The invention can achieve the following effects:

compared with the prior art, the processing method for the flexible graphite metal wound gasket has the advantages of accurate positioning, convenience in installation, high production efficiency, good sealing performance and good quality stability. The problem of intensity of labour is big is solved. The assembly defect is avoided, the product quality is improved, and the processing period is shortened.

Drawings

Fig. 1 is a schematic view of the structure of the wound gasket of the present invention.

Fig. 2 is a structural sectional view of a wound gasket of the present invention.

Fig. 3 is a structural sectional view of the punch press of the present invention.

Fig. 4 is a schematic side view of the water mill of the present invention.

Fig. 5 is a schematic front view of the water mill of the present invention.

Fig. 6 is a schematic top view of the winding machine of the present invention.

Fig. 7 is a side view schematically showing the structure of the winding machine of the present invention.

Fig. 8 is a sectional view of the structure of the hydraulic press according to the present invention.

In the figure: the device comprises an outer ring 1, a winding elastic component 2, a nonmetal filling ring 3, an inner ring 4, a punching machine upper die frame 5, an upper die 6, a top ring 7, a lower die 8, a punching machine positioning guide rod 9, a punching machine guide column 10, a lower die frame 11, a buffer spring 12, a punching die base 13, a hydraulic buffer 14, an inner hole top column 15, a conveying platform 16, a saponification liquid supply tank 17, a belt sander frame 18, a platform lifting adjusting frame 19, a grinding liquid gathering frame 20, a winding frame 21, a material pressing wheel 22, a driving rotating shaft 23, a guiding winding wheel 24, a graphite belt 25, a graphite belt disc 26, a driven rotating shaft 27, a metal steel belt 28, a steel belt disc 29, a driving motor 30, an oil pressure lifting frame 31, a winding elastic component positioning pressure disc 32, a positioning chassis 33, an oil pressure frame 34, an oil pressure guide column 35 and an oil pressure positioning.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.