Metal graphite winding sealing gasket forming process system and forming process method

Abstract

The invention discloses a metal graphite winding sealing gasket forming process system and a forming process method.The metal graphite winding sealing gasket forming process system comprises a winding mechanism and a pressing mechanism, and a metal belt and a graphite belt can be wound around the winding mechanism to form a winding gasket; the winding mechanism comprises an inner jacking wheel, and the pressing mechanism comprises an outer jacking wheel. The inner jacking wheel and the outer jacking wheel abut against the inner side and the outer side of the formed winding gasket in an opposite mode so that the metal belt and the graphite belt can be tightly pressed on the winding mechanism. A plurality of outer jacking wheels are arranged in the pressing mechanism, and all the outer jacking wheels are matched with the inner jacking wheels to abut against the inner jacking wheels, so that the outer side pressed area of the spiral wound gasket is dispersed. The winding mechanism or the pressing mechanism can move so that the distance between the inner jacking wheel and the outer jacking wheel can be changed in the forming and thickening process of the spiral wound gasket. The problems that a finished spiral wound gasket is large in internal stress and prone to deformation can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of spiral wound gasket manufacturing, and in particular to a metal graphite spiral wound sealing gasket forming process system and a forming process method. Background Art

[0002] Spiral wound gasket is a sealing gasket made of metal strips and graphite strips wound alternately. It is mostly used to seal flange joints. Figure 1 As shown in the figure, it consists of a pair of top wheels, with the metal belt and graphite belt wound on one of the top wheels, and the other top wheel pressing the metal belt and graphite belt tightly. During the processing, since there is only one pressure area on the outside of the spiral wound gasket that contacts the top wheel, the metal belt is subjected to great pressure, resulting in high internal stress of the finished spiral wound gasket, which is easy to deform or even fall apart. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a metal graphite wound sealing gasket forming process system and a forming process method, aiming to solve the problem that the finished wound gasket has high internal stress and is easy to deform.

[0004] Technical solution: To achieve the above-mentioned purpose, the metal-graphite wound sealing gasket forming process system of the present invention includes a winding mechanism and a clamping mechanism, and the metal strip and the graphite strip can be wound on the winding mechanism to be formed into a wound gasket; the winding mechanism includes an inner top wheel, and the clamping mechanism includes an outer top wheel; the inner top wheel and the outer top wheel are pressed against the inner and outer sides of the wound gasket being formed to press the metal strip and the graphite strip against the winding mechanism; the clamping mechanism is provided with a plurality of outer top wheels, and each of the outer top wheels cooperates with the inner top wheel to press against the outer pressure area of ​​the wound gasket.

[0005] Furthermore, the winding mechanism or the pressing mechanism can be movably displaced to change the distance between the inner top wheel and the outer top wheel during the process of the wound gasket being formed and thickened.

[0006] Furthermore, the winding mechanism comprises an inner top wheel which can be actively rotated, and the metal belt and the graphite belt are correspondingly wound on the outer wheel surface of the inner top wheel.

[0007] Furthermore, the winding mechanism includes an inner top wheel and several auxiliary winding wheels; the inner top wheel and the several auxiliary winding wheels are arranged in a ring shape, so that the outer wheel surfaces of the inner top wheel and the several auxiliary winding wheels are combined into an annular winding profile, and the metal strip and the graphite strip are correspondingly wound on the annular winding profile.

[0008] Furthermore, there are two outer top wheels, thereby forming an inner pressure zone and two outer pressure zones on the wound gasket; the two outer top wheels are symmetrically distributed on both sides of the inner top wheel, so that the two outer pressure zones are symmetrically distributed on both sides of the inner pressure zone.

[0009] Furthermore, the winding mechanism or the pressing mechanism can be displaced back and forth in a straight line direction, and the displacement direction is consistent with the symmetry axis of the two outer pressure zones.

[0010] Furthermore, the radius of the outer top wheel is variable; during the process of the wound gasket being formed and thickened, the radius of the outer top wheel can be increased synchronously.

[0011] Furthermore, a thickening belt is connected to the outer top wheel; during the process of forming and thickening the wound gasket, the outer top wheel can actively rotate to wind the thickening belt on the outer top wheel, so that the radius of the outer top wheel increases synchronously.

[0012] Furthermore, one end of the thickening belt away from the outer top wheel is connected to the reel; the reel can actively rotate to retract the thickening belt onto the reel, thereby reducing the radius of the outer top wheel.

[0013] A forming process method for a metal graphite wound sealing gasket, wherein during the process of the wound gasket gradually being formed and thickened on a winding mechanism, an outer top wheel actively rotates to wind the thickening belt on the outer top wheel, so that the radius of the outer top wheel increases synchronously; at the same time, the winding mechanism or the clamping mechanism is movably displaced to adaptively increase the distance between the inner top wheel and the outer top wheel; after the wound gasket is formed and removed from the winding mechanism, the winding wheel actively rotates to retract the thickening belt onto the winding wheel, so that the radius of the outer top wheel is reduced and restored; accordingly, the winding mechanism or the clamping mechanism is movably displaced to reduce and restore the distance between the inner top wheel and the outer top wheel.

[0014] Beneficial effects: The metal graphite wound sealing gasket forming process system and forming process method of the present invention have the following beneficial effects:

[0015] 1) The top wheel on the outside of the spiral wound gasket is changed from one to two or more, so that several pressure areas are generated on the outside of the spiral wound gasket, the pressure is dispersed, the pressure on the metal belt during the processing will be reduced, the internal stress of the finished spiral wound gasket is small, and it is not easy to deform;

[0016] 2) During the process of the spiral wound gasket being formed and thickened, the radius of the outer top wheel will gradually increase, so that the actual contact area between the top wheel and the spiral wound gasket will become larger, which can disperse the pressure and reduce the force on the metal belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 The figure is a schematic diagram of the processing equipment of the existing spiral wound gasket;

[0018] Attached Figure 2 It is a schematic diagram of an embodiment in which the winding mechanism only includes an inner top wheel;

[0019] Attached Figure 3It is a schematic diagram of an embodiment in which the winding mechanism includes an inner top wheel and an auxiliary winding wheel;

[0020] Attached Figure 4 It is a schematic diagram of the connection between the outer top wheel, the thickening belt and the winding wheel;

[0021] Attached Figure 5 Schematic diagram of the outer compression zone. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] As attached Figures 1 to 5 The metal-graphite wound sealing gasket forming process system, the processing equipment includes a winding mechanism, a clamping mechanism and a feeding mechanism, the feeding mechanism can supply metal strip 2 and graphite strip 3 to the winding mechanism, in one embodiment, the metal strip 2 is a steel strip. The metal strip 2 and the graphite strip 3 can be wound on the winding mechanism and gradually formed into a wound gasket 1. The winding mechanism includes an inner top wheel 4, and the clamping mechanism includes an outer top wheel 5. During the forming process of the wound gasket 1, the inner top wheel 4 and the outer top wheel 5 are pressed against the inner and outer sides of the wound gasket 1 to press the metal strip 2 and the graphite strip 3 on the winding mechanism, thereby pressing the metal strip 2 and the graphite strip 3 into the wound gasket 1.

[0024] The common processing and manufacturing equipment of spiral wound gasket 1 is as follows Figure 1 As shown in FIG. 1 , there is only one outer top wheel 5. Therefore, during the processing of the spiral wound gasket 1, there is only one outer pressure zone 10 on the spiral wound gasket 1, so the outer side of the spiral wound gasket 1 is subjected to a large pressure, resulting in a large internal stress of the finished spiral wound gasket 1, which is easy to deform or even fall apart.

[0025] In the present invention, the clamping mechanism has several smaller outer top wheels 5, each of which cooperates with the inner top wheel 4 to press against the outer pressure area 10 of the spiral wound gasket 1. Since the number of the outer pressure areas 10 of the spiral wound gasket 1 is increased, the pressure will be dispersed accordingly, and the pressure of a single outer pressure area 10 will be reduced, so the internal stress of the finished spiral wound gasket 1 is reduced and it is not easy to deform.

[0026] The winding mechanism or the pressing mechanism can be movably displaced, for example, the winding mechanism or the pressing mechanism is installed on a sliding seat, so that the winding mechanism or the pressing mechanism can be slidably adjusted. During the forming process of the wound gasket 1, the wound gasket 1 will gradually become thicker, and accordingly, the winding mechanism or the pressing mechanism will also be movably displaced to change the distance between the inner top wheel 4 and the outer top wheel 5, so that the distance between the inner top wheel 4 and the outer top wheel 5 is adapted to the thickness of the wound gasket 1, ensuring that the inner top wheel 4 and the outer top wheel 5 can cooperate to press the metal belt 2 and the graphite belt 3.

[0027] An example of an embodiment is shown in FIG. Figure 2As shown in the figure, the winding mechanism only includes an inner top wheel 4, which can rotate actively, and the metal belt 2 and the graphite belt 3 are correspondingly wound on the outer wheel surface of the inner top wheel 4. In this embodiment, the entire outer wheel surface of the inner top wheel 4 is in contact with the wound gasket 1. The winding mechanism in this embodiment is mostly used for processing small wound gaskets 1.

[0028] An example of an embodiment is shown in FIG. Figure 3 As shown in the figure, the winding mechanism includes not only the inner top wheel 4 but also a plurality of auxiliary winding wheels 6, wherein the inner top wheel 4 can also rotate actively. The inner top wheel 4 and the plurality of auxiliary winding wheels 6 are arranged in a ring shape, so that the outer wheel surfaces of the inner top wheel 4 and the plurality of auxiliary winding wheels 6 are combined into an annular winding profile, and the metal strip 2 and the graphite strip 3 are correspondingly wound on the annular winding profile. In this embodiment, the wound gasket 1 has only one contact area with the outer wheel surface of the inner top wheel 4, which is referred to as the inner side pressure zone 9 of the wound gasket 1. The winding mechanism in this embodiment is mostly used for processing large wound gaskets 1.

[0029] Specifically, there are two outer top wheels 5, thereby forming an inner pressure zone 9 and two outer pressure zones 10 on the wound gasket 1. The two outer top wheels 5 are symmetrically distributed on both sides of the inner top wheel 4, so that the two outer pressure zones 10 are symmetrically distributed on both sides of the inner pressure zone 9, so that the two outer pressure zones 10 can more evenly disperse the pressure on the outside of the wound gasket 1, reducing the internal stress of the finished wound gasket 1.

[0030] The winding mechanism or the pressing mechanism can move back and forth in a straight line, and the displacement direction is consistent with the symmetry axis of the two outer pressure zones 10. Therefore, in the process of the spiral wound gasket 1 gradually becoming thicker, even if the winding mechanism or the pressing mechanism is displaced, the two inner top wheels 4 can still be closely attached to the outer contour of the spiral wound gasket 1.

[0031] In one embodiment, the radius of the outer top wheel 5 is variable. During the process of forming and thickening the spiral wound gasket 1, the radius of the outer top wheel 5 can be increased synchronously. Figure 5 As shown in the figure, the contact area between the outer top wheel 5 and the wound gasket 1 is actually an arc-shaped area. When the radius of the outer top wheel 5 increases, the area of ​​the arc-shaped area will also increase, that is, the area of ​​the outer pressure zone 10 of the wound gasket 1 will increase, so the pressure of the outer top wheel 5 on the wound gasket 1 will be more dispersed, and the internal stress of the finished wound gasket 1 will be reduced, and it will not be easy to deform.

[0032] As attached Figure 4As shown in the figure, a thickening belt 7 is connected to the outer top wheel 5; in the process of forming and thickening the wound gasket 1, the outer top wheel 5 can actively rotate to wind the thickening belt 7 on the outer top wheel 5, so that the radius of the outer top wheel 5 increases synchronously. The end of the thickening belt 7 away from the outer top wheel 5 is connected to the winding wheel 8. The winding wheel 8 can also actively rotate to retract the thickening belt 7 onto the winding wheel 8, so that the radius of the outer top wheel 5 decreases.

[0033] The present invention also provides a metal-graphite wound sealing gasket forming process method, which is as follows: a feeding mechanism feeds a metal strip 2 and a graphite strip 3 to a winding mechanism, and an inner top wheel 4 actively rotates to drive the metal strip 2 and the graphite strip 3 to be wound, thereby forming a wound gasket 1; in the process of the wound gasket 1 gradually being formed and thickened on the winding mechanism, an outer top wheel 5 actively rotates to wind a thickening strip 7 on the outer top wheel 5, so that the radius of the outer top wheel 5 is synchronously increased; at the same time, the winding mechanism or the pressing mechanism is movably displaced, so that the distance between the inner top wheel 4 and the outer top wheel 5 is also adaptively increased to adapt to the thickness of the wound gasket 1, so that the outer top wheel 5 is kept pressed against the outer side of the wound gasket 1;

[0034] When the wound gasket 1 is formed, the wound gasket 1 is removed from the winding mechanism, and then the reel 8 is actively rotated to retract the thickening belt 7 onto the reel 8, so that the radius of the outer top wheel 5 is reduced and restored; accordingly, the winding mechanism or the clamping mechanism is movably displaced to reduce and restore the distance between the inner top wheel 4 and the outer top wheel 5, so as to process the next wound gasket 1.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. Metal graphite wound sealing gasket forming process system, characterized by: The invention comprises a winding mechanism and a pressing mechanism, wherein a metal strip (2) and a graphite strip (3) can be wound on the winding mechanism to be formed into a wound gasket (1); the winding mechanism comprises an inner top wheel (4), and the pressing mechanism comprises an outer top wheel (5); the inner top wheel (4) and the outer top wheel (5) are pressed against the inner and outer sides of the wound gasket (1) being formed, so as to press the metal strip (2) and the graphite strip (3) against the winding mechanism; the pressing mechanism comprises a plurality of outer top wheels (5), and each of the outer top wheels (5) cooperates with the inner top wheel (4) to press against the outer pressure area (10) of the wound gasket (1) so as to disperse the outer pressure area (10) of the wound gasket (1).

2. The metal graphite wound sealing gasket forming process system according to claim 1 is characterized in that: The winding mechanism or the pressing mechanism can be movably displaced to change the distance between the inner top wheel (4) and the outer top wheel (5) during the process of forming and thickening the wound gasket (1).

3. The metal graphite wound sealing gasket forming process system according to claim 2 is characterized in that: The winding mechanism comprises an inner top wheel (4) which can actively rotate, and the metal belt (2) and the graphite belt (3) are correspondingly wound on the outer wheel surface of the inner top wheel (4).

4. The metal graphite wound sealing gasket forming process system according to claim 2 is characterized in that: The winding mechanism comprises an inner top wheel (4) and a plurality of auxiliary winding wheels (6); the inner top wheel (4) and the plurality of auxiliary winding wheels (6) are arranged in a ring shape, so that the outer wheel surfaces of the inner top wheel (4) and the plurality of auxiliary winding wheels (6) are combined into an annular winding profile, and the metal strip (2) and the graphite strip (3) are correspondingly wound on the annular winding profile.

5. The metal graphite wound sealing gasket forming process system according to claim 4 is characterized in that: There are two outer top wheels (5), thereby forming an inner pressure zone (9) and two outer pressure zones (10) on the wound gasket (1); the two outer top wheels (5) are symmetrically distributed on both sides of the inner top wheel (4), so that the two outer pressure zones (10) are symmetrically distributed on both sides of the inner pressure zone (9).

6. The metal graphite wound sealing gasket forming process system according to claim 5 is characterized in that: The winding mechanism or the pressing mechanism can be displaced back and forth in a straight line direction, and the displacement direction is consistent with the symmetry axis of the two outer pressure zones (10).

7. The metal graphite wound sealing gasket forming process system according to claim 2 is characterized by: The radius of the outer top wheel (5) is variable; during the process of forming and thickening the wound gasket (1), the radius of the outer top wheel (5) can be increased synchronously.

8. The metal graphite wound sealing gasket forming process system according to claim 7 is characterized in that: The outer top wheel (5) is connected to a thickening belt (7); during the process of forming and thickening the wound gasket (1), the outer top wheel (5) can actively rotate to wind the thickening belt (7) onto the outer top wheel (5), thereby increasing the radius of the outer top wheel (5) synchronously.

9. The metal graphite wound sealing gasket forming process system according to claim 8, characterized in that: One end of the thickening belt (7) away from the outer top wheel (5) is connected to the reel (8); the reel (8) can actively rotate to retract the thickening belt (7) onto the reel (8), thereby reducing the radius of the outer top wheel (5).

10. The metal graphite wound sealing gasket forming process according to claim 9, characterized in that: During the process of the spiral wound gasket (1) gradually being formed and thickened on the winding mechanism, the outer top wheel (5) actively rotates to wind the thickening belt (7) on the outer top wheel (5), so that the radius of the outer top wheel (5) increases synchronously; at the same time, the winding mechanism or the pressing mechanism moves flexibly, so that the distance between the inner top wheel (4) and the outer top wheel (5) also increases adaptively; After the winding gasket (1) is formed and removed from the winding mechanism, the reel (8) actively rotates to retract the thickening belt (7) onto the reel (8), so that the radius of the outer top wheel (5) is reduced and restored; accordingly, the winding mechanism or the clamping mechanism is movably displaced, so that the distance between the inner top wheel (4) and the outer top wheel (5) is reduced and restored.

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