CN210061693U - Sealing ring manufacturing mold - Google Patents

Abstract

A seal ring manufacturing mold, comprising: an upper die having an upper cavity region; a lower die having a lower cavity region; the upper cavity region is provided with a core, and the lower end face of the core is provided with a first groove; the upper cavity region also has an upper molding surface region surrounding the core, the upper cavity region also having a second groove surrounding the upper molding surface region; the lower cavity region is provided with a lower cavity, the lower cavity is provided with a side wall, the side wall is provided with a first curved surface groove, and the height of the first curved surface groove is smaller than that of the side wall of the lower cavity. The sealing ring manufacturing mold is used for manufacturing a sealing ring with a sealed side face, the manufactured sealing ring is good in sealing effect, and the problem that the sealing ring is easy to tear and damage when in use can be solved through the manufactured sealing ring.

Description

Sealing ring manufacturing mold

Technical Field

The utility model relates to a rubber and plastic sealing field especially relates to a sealing washer preparation mould.

Background

The sealing ring is generally made of nitrile rubber, natural rubber, ethylene propylene rubber, fluorine rubber, silicon rubber and blend rubber.

The sealing ring is widely used like an O-shaped sealing ring, and relates to the technical fields of mechanical sealing, chemical equipment, electrical appliances and the like, and static or dynamic sealing is carried out on various fluids such as oil, water, air or gas.

The sealing rings such as O-shaped sealing rings and the like are usually in ring structures, and have the advantages of good sealing performance, low price and the like.

Currently, the sealing ring is molded by upper and lower dies, for example, a conventional O-ring 10 is shown in fig. 1.

The cross-section of the O-ring 10 shown in fig. 1 is shown in fig. 2. The positions where it performs the sealing function are generally the outer peripheral edge 11, the inner peripheral edge 12, the upper top 13 and the lower top 14, in particular the outer peripheral edge 11, the upper top 13 and the lower top 14 thereof, as can be seen in the sectional view.

Such an O-ring 10, shown in fig. 1, is typically compression molded from an upper mold and a lower mold to produce corresponding burrs 15 and 16 (the burrs are generally diamond shaped in cross-section), as shown in cross-section in fig. 3. The burr 15 is located right at the outer peripheral edge 11 of the O-ring 10, and the burr 16 is located right at the inner peripheral edge 12 of the O-ring 10, which results in that after the burr 15 and the burr 16 are removed, the outer peripheral edge 11 and the inner peripheral edge 12 each usually leave a 180-degree parting line (tearing line), wherein 180 degrees means that the parting line entirely surrounds the outer peripheral edge 11 and the inner peripheral edge 12 of the O-ring 10.

The 180-degree parting line on the outer peripheral edge 11 surface (outer ring surface) and the 180-degree parting line on the inner peripheral edge 12 surface (inner ring surface) of the O-ring seal can cause the unsmooth main working main surface (namely the outer side surface or the outer peripheral edge 11 surface) of the O-ring seal and other seal rings, which can affect the sealing effect of the O-ring seal and other seal rings, and the parting lines can also cause the seal rings to be easily torn and damaged when the O-ring seal and other seal rings are dynamically used.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem provide a sealing washer preparation mould to be used for making the better sealing washer of sealed effect, and, make the sealing washer of making overcome easily the problem of tearing the damage.

In order to solve the above problem, the utility model provides a sealing washer preparation mould, include: an upper die having an upper cavity region; a lower die having a lower cavity region; the upper cavity region is provided with a core, and the lower end face of the core is provided with a first groove; the upper cavity region also has an upper molding surface region surrounding the core, the upper cavity region also having a second groove surrounding the upper molding surface region; the lower cavity region is provided with a lower cavity, the lower cavity is provided with a side wall, the side wall is provided with a first curved surface groove, and the height of the first curved surface groove is smaller than that of the side wall of the lower cavity.

Optionally, the height midpoint of the first curved groove coincides with the height midpoint of the sidewall.

Optionally, the cross section of the upper molding surface area is a straight line segment, an inclined line segment, a convex curve segment or a concave curve segment.

Optionally, the bottom of the lower cavity is provided with a lower core bearing surface region and a lower molding surface region, the lower core bearing surface region is used for corresponding to the lower end surface of the core, and the lower molding surface region surrounds the lower core bearing surface region; the cross section of the lower molding surface area is a straight line segment, an inclined line segment, a convex curve segment or a concave curve segment.

Optionally, the cross section of the first curved groove is a first semicircle or a first arc.

Optionally, when the cross section of the first curved groove shows the first semicircle shape, the diameter of the first semicircle shape is one fifth to four fifths of the height of the side wall of the lower cavity; when the section of the first curved surface groove shows the first arc shape, the chord of the first arc shape is one fifth to four fifths of the height of the side wall of the lower cavity.

Optionally, the upper die further includes: a second curved groove surrounding the entire side of the core.

Optionally, the height midpoint of the second curved surface groove coincides with the height midpoint of the core side surface.

Optionally, the cross section of the second curved groove is a second semicircle; or the section of the second curved surface groove is in a second arch shape.

Optionally, when the cross section of the second curved groove is the second semicircle, the diameter of the second semicircle is one fifth to four fifths of the height of the side surface of the core;

when the section of the second curved surface groove is in a second arc shape, the chord of the second arc shape is one fifth to four fifths of the height of the side surface of the core.

The utility model discloses in one of them aspect of technical scheme, the corresponding structure of sealing washer preparation mould makes sealing washer preparation mould can produce the sealed sealing washer in side, and the sealed effectual of corresponding sealing washer to, can overcome the sealing washer and easily tear the problem of damage when using.

Drawings

FIG. 1 is a schematic view of a prior art seal ring;

FIG. 2 is a schematic cross-sectional view of a prior art seal ring;

FIG. 3 is a schematic cross-sectional view of a prior art seal ring with burrs just opened;

fig. 4 is a schematic view of a side sealing gasket according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the seal ring of FIG. 4;

FIG. 6 is an enlarged view of a cross-section of the seal ring shown in FIG. 5;

FIG. 7 is a schematic plan view of an upper mold and a lower mold of a mold for manufacturing a sealing ring according to the present invention;

FIG. 8 is a perspective view of the upper and lower dies of FIG. 7;

FIG. 9 is an enlarged schematic view of the upper and lower mold sections of FIG. 7;

FIG. 10 is a perspective view of the upper and lower dies before they are aligned and clamped;

FIG. 11 is a schematic sectional view showing the upper and lower dies before they are clamped together;

FIG. 12 is an enlarged view of a portion of the structure of FIG. 11;

FIG. 13 is a schematic view of the enlarged structure of FIG. 12 after clamping;

fig. 14 is a schematic cross-sectional view of a side-sealing gasket according to another embodiment of the present invention;

fig. 15 is a schematic cross-sectional view of a side-sealing gasket according to another embodiment of the present invention;

fig. 16 is a schematic view of a side sealing gasket according to another embodiment of the present invention;

FIG. 17 is a cross-sectional schematic view of the seal ring of FIG. 16;

fig. 18 is a schematic view of a side sealing gasket according to another embodiment of the present invention;

FIG. 19 is a cross-sectional schematic view of the seal ring of FIG. 18;

FIG. 20 is a perspective view of the seal ring of FIG. 18;

fig. 21 is a schematic view of a side sealing gasket according to another embodiment of the present invention.

Detailed Description

The sealing effect of the existing sealing ring needs to be improved, and the sealing ring is easy to tear and damage when being dynamically used.

Therefore, the utility model provides a novel side seal's sealing washer and sealing washer preparation mould to solve the not enough of above-mentioned existence.

For a clearer illustration, the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the utility model provides a side seal's sealing washer 20, as shown in fig. 4, the sealing washer 20 of this embodiment is an O type sealing washer, and sealing washer 20 includes main part 21 and first curved surface arch 22.

With continued reference to fig. 5, fig. 5 is a cross-sectional view of the seal ring 20, and as can be further seen in cross-section, the seal ring 20 includes a main body 21 and a first curved protrusion 22. The main body 21 has an upper end peripheral surface 213 and a lower end peripheral surface 214 (in the description, the surfaces are indicated by solid triangular arrows). The main body 21 also has an outer peripheral side surface 211 located between the upper end peripheral surface 213 and the lower end peripheral surface 214, and an inner peripheral side surface 212 located between the upper end peripheral surface 213 and the lower end peripheral surface 214. As can be seen from fig. 4 and 5, the first curved protrusion 22 surrounds the entire outer peripheral side 211 of the main body 21.

As seen in fig. 5, the height of the first curved protrusion 22 is smaller than the height of the outer circumferential side 211 of the body 21. The reason why the sealing ring 20 is called a side sealing ring is that the present embodiment mainly achieves sealing effect by the first curved surface protrusion 22 on the side surface of the sealing ring (note that the first curved surface protrusion 22 is the main function, but other parts of the sealing ring also participate in sealing of course).

As can be seen from fig. 5, in the present embodiment, the cross section of the upper end peripheral surface 213 is a straight line segment. In other embodiments, the cross section of the upper end peripheral surface of the sealing ring main body can also be an inclined line segment, a convex curve segment or a concave curve segment.

When the section of the upper end peripheral surface is a straight line segment or an inclined line segment, the section of the main body is determined to be rectangular or trapezoidal.

When the section of the upper end peripheral surface is a convex curve section or a concave curve section, the section of the main body is determined to be a superposition combination or a subtraction combination of a rectangle and a semicircle (the semicircle can also be an arc).

As can be seen from fig. 5, in the present embodiment, the cross section of the lower end peripheral surface 214 is a straight line segment. In other embodiments, the cross section of the lower end peripheral surface of the sealing ring main body can also be an inclined line segment, a convex curve segment or a concave curve segment.

Also, in other embodiments, the cross-sections of the upper end peripheral surface and the lower end peripheral surface may be different, for example, the cross-section of the upper end peripheral surface may be a convex curve section, and the cross-section of the lower end peripheral surface may be a straight line section.

Referring to fig. 6, which shows an enlarged view of a partial cross-section of the seal ring 20, fig. 6 shows the body 21 and the first curved protrusion 22 separated by a dotted line for better distinction. At this time, it is apparent that the sectional shape of the main body 21 is rectangular in the present embodiment. In other embodiments, the cross-sectional shape of the body may be other shapes.

In the present embodiment, the height midpoint of the first curved protrusion 22 coincides with the height midpoint of the outer peripheral side surface 211. That is, in the present embodiment, the first distance D1 and the second distance D2 shown in fig. 6 are equal, and the cross section of the first curved protrusion 22 is a shape structure that is symmetrical up and down.

Specifically, in the present embodiment, the cross section of the first curved protrusion 22 is a first arc shape. The chord of the first arc is on the vertical line in fig. 6. The chord height is H1 shown in fig. 6, and the height of the outer peripheral side 211 of the main body 21 is H2 shown in fig. 6. As can be seen from the foregoing, H1 is smaller than H2, or, it can be said, the first distance D1 and the second distance D2 are equal and are not zero.

Also, in the present embodiment, the chords of the first bow are one fifth to four fifths of the height of the outer peripheral side 211 of the main body 21, that is, H1 is one fifth to four fifths of H2. In a further alternative, H1 is selected to be one-third to two-thirds of H2, whereas H1 is about one-half of H2 in the case shown in fig. 6.

It should be noted that, in other embodiments, the cross section of the first curved protrusion may be a first semicircle. When the cross section of the first curved surface protrusion is a first semicircle, the diameter of the first semicircle may be one fifth to four fifths of the height of the peripheral side surface of the main body. Further ranges, one third to two thirds, can be selected to better achieve the corresponding sealing action.

The side sealing gasket 20 of the present embodiment can prevent the 180-degree parting line of the gasket from being located on the outer peripheral side surface 211 and the inner peripheral side surface 212 shown in fig. 5, and from being located on the upper end peripheral surface 213 and the lower end peripheral surface 214, but instead, the gasket is located at a corner position where burrs are to be generated.

Specifically, one of the parting lines is present at the corner positions of the upper end peripheral surface 213 and the outer peripheral side surface 211 (i.e., burrs are present at positions other than the corner positions), and the other parting line is present at the corner positions of the lower end peripheral surface 214 and the inner peripheral side surface 212, respectively.

That is, the side seal gasket 20 can be configured to have a feature that its first parting line (tear line) is located at a corner of the upper end peripheral surface 213 and the outer peripheral side surface 211, and its second parting line (tear line) is located at a corner of the lower end peripheral surface 214 and the inner peripheral side surface 212.

In this case, the main working principal surface (the outer peripheral side surface 211, most mainly the surface of the first curved protrusion 22) of the side seal packing 20 is made smoother, and the other working surfaces (the upper end peripheral surface 213 and the lower end peripheral surface 214 of the inner peripheral side surface 212) are also made smoother, so that the side seal packing 20 has a good sealing effect. In addition, when the seal ring 20 is used dynamically, the problem that the seal ring is easy to tear and damage in use can be solved because the parting line is positioned at the corner.

In order to illustrate the above-mentioned advantages of the side sealing gasket 20, the following description will be made with reference to a mold for manufacturing the gasket 20.

Namely, the embodiment of the present invention further provides a mold for manufacturing a sealing ring (not labeled), as shown in fig. 7.

In fig. 7, the structure on the left side is an upper mold 30 of the seal ring forming mold, and the structure on the right side is a lower mold 40 of the seal ring forming mold.

Fig. 7 is a schematic view of the upper die 30 and the lower die 40. The upper die 30 has an upper cavity area 31. The upper cavity region 31 has a core 311 (see fig. 9 and 12 in combination), and a lower end surface of the core 311 has a first groove 3110 (see fig. 9 and 12 in combination). The upper cavity region 31 also has an upper molding surface region 312 surrounding the core 311. The upper cavity region 31 also has a second groove 313 (please refer to fig. 9 and 12 in combination) surrounding the upper molding surface region 312.

The lower mold 40 has a lower cavity area 41. The lower cavity region 41 has a lower cavity 410 (please refer to fig. 9 and 12 in combination), the lower cavity 410 has a sidewall (not labeled, please refer to fig. 12), the sidewall has a first curved surface groove 4101 (please refer to fig. 12 and 13), and the height of the first curved surface groove 4101 is smaller than the height of the sidewall of the lower cavity 410.

In the mold of the present embodiment, the height midpoint of the first curved surface 4101 coincides with the height midpoint of the side wall, corresponding to the seal ring 20. In other embodiments, the midpoint of the height of the first curvilinear groove may not coincide with the midpoint of the height of the sidewall.

With continued reference to fig. 7, the upper mold 30 further includes a first guide hole 32 and a first guide post 33, which are located on two opposite corners of the upper mold 30 having a generally quadrangular shape. Accordingly, the lower mold 40 includes a second guide post 42 and a second guide hole 43, which are also located on two opposite corners of the lower mold 40 having a quadrangular shape as a whole. The first guide hole 32 is adapted to cooperate with the second guide post 42, and the second guide hole 43 is adapted to cooperate with the first guide post 33. In addition, in the figure, one of the corners of the upper die 30 and the lower die 40 is shown as a truncated corner, and the truncated corner is used for alignment.

In addition to the above structure, the lower mold 40 has the vent groove 44, and the vent groove 44 firstly surrounds the lower cavity region 41 and then leads out four branch grooves in four directions for venting during mold clamping, so that the mold can be conveniently clamped.

Fig. 8 shows the three-dimensional structures of the upper mold 30 and the lower mold 40, and their back structures are also shown by broken lines. With regard to the specific structural content in fig. 8, reference may be made to the content relating to fig. 7.

Fig. 9 shows an enlarged view of a portion of the structure of fig. 7 and 8, specifically enlarged portions of the upper cavity region 31 of the upper die 30 and the lower cavity region 41 of the lower die 40. With an enlarged configuration of a portion of the upper cavity region 31 to the left in fig. 9 and an enlarged configuration of a portion of the lower cavity region 41 to the right in fig. 9. The enlarged portion of the upper cavity region 31 shows that the upper cavity region 31 has the above-described structure of the core 311, the upper molding surface region 312, and the second groove 313, and also shows that the lower end surface of the core 311 has the first groove 3110. The enlarged portion of lower cavity region 41 shows that lower cavity region 41 has lower cavity 410.

Fig. 10 shows a three-dimensional structure of the upper mold 30 and the lower mold 40 before the alignment and clamping.

Fig. 11 shows a cross-sectional structure of the upper mold 30 and the lower mold 40 before they are clamped.

Fig. 12 is an enlarged view of a portion of the structure of fig. 11, particularly enlarged view of one of the cores 311 and one of the lower cavities 410, and their corresponding structures around the periphery.

Fig. 12 shows that the upper mold has the above-described structure of the core 311, the upper molding surface region 312, and the second groove 313, and also shows that the lower end surface of the core 311 has the first groove 3110.

Fig. 12 shows that the lower cavity region 41 has a lower cavity 410, and the sidewall of the lower cavity 410 has a first curved surface groove 4101.

Fig. 12 also shows that the bottom of the lower cavity 410 has a lower core-receiving surface region 4102 (two dashed lines in fig. 12 define the corresponding position of the lower core-receiving surface region 4102, i.e. the line between the two dashed lines corresponds to the cross-section of the core-receiving surface region 4102, the same applies to fig. 13 below) and a lower molding surface region 4103, the lower core-receiving surface region 4102 is adapted to correspond to the lower end of the core 311, and the lower molding surface region 4103 surrounds the lower core-receiving surface region 4102.

In this embodiment, the cross-section of the lower molding surface region 4103 is a straight line segment. In other embodiments, the cross section of the lower molding surface area can also be a diagonal segment, a convex curve segment or a concave curve segment.

Fig. 13 is a schematic view of the enlarged structure shown in fig. 12 after clamping. At this time, the core 311 (not shown in fig. 13, please refer to fig. 12) of the upper mold 30 and the lower cavity 410 (not shown in fig. 13, please refer to fig. 12) of the lower mold 40 cooperate to define a product cavity 4100.

The product cavity 4100 has a cross-sectional shape identical to the cross-sectional shape of the seal ring 20 shown in fig. 5 and 6, that is, the mold provided in this embodiment is for manufacturing the seal ring 20. The first curved grooves 4101 in the product cavity 4100 are used for forming the first curved protrusions 22, and the other parts except the first curved grooves 4101 are used for forming the main body 21, please refer to fig. 5, 6 and 13.

In one aspect, as seen in FIG. 13, the cooperation of the core 311, the upper molding surface region 312, and the second groove 313 with the lower cavity 410 causes a first parting line of the seal ring 20 to occur at the corners of the upper end peripheral surface 213 and the peripheral side surface 211 of the seal ring 20, i.e., a first burr is formed in the region enclosed by the second groove 313 and the lower mold 40.

On the other hand, as also seen in fig. 13, a first groove 3110 of a lower end surface (not labeled) of the core 311 is engaged with a lower core receiving surface region 4102 of the bottom of the lower cavity 410, so that a second parting line generated by the seal ring 20 appears at a corner between the lower end peripheral surface 214 of the seal ring 20 and the inner peripheral side surface 212, i.e., a second burr is formed in a region surrounded by the first groove 3110 and the lower core receiving surface region 4102 of the lower mold 40.

For the above two reasons, the side sealing ring 20 provided in the present embodiment can achieve the desired sealing effect. In addition, when the side sealing gasket 20 is used dynamically, the problem that the gasket is easy to tear and damage in use can be solved.

Referring to fig. 12 and 13, in the present embodiment, the cross section of the upper molding surface area 312 is a straight line segment, which determines that the upper peripheral surface 213 of the sealing ring 20 is a plane (see fig. 5). In other embodiments, the cross-section of the upper land area may be a diagonal segment, a convex curved segment, or a concave curved segment.

The first curved grooves 4101 have a first semicircular shape or a first arcuate shape in cross section. The chords of the first arch are one fifth to four fifths of the height of the sidewalls of the lower cavity 410. The first curved surface grooves 4101 correspond to the first curved surface protrusions 22, and therefore, reference can be made to fig. 6.

In other embodiments, the cross section of the first curved groove may be a first semicircle. The diameter of the first semicircle is one fifth to four fifths of the height of the side wall of the lower cavity.

It should be noted that another cross-sectional view of the seal ring 20 shown in fig. 4 can be seen in fig. 14, which is shown by a seal ring 20' in fig. 14. That is, the embodiment of the present invention provides another side sealing ring 20' whose cross section is shown in fig. 14. The seal ring 20' also includes a main body (not labeled) and a first curved protrusion (not labeled). Also, the body has an upper end peripheral surface (not labeled) and a lower end peripheral surface (not labeled). The main body also has an outer peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface, and an inner peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface. The first curved surface protrusion surrounds the outer circumferential side surface of the entire body. The height of the first curved surface protrusion is smaller than that of the peripheral side surface of the main body. Please refer to the foregoing embodiments correspondingly. In this embodiment, as shown in fig. 14, the cross-sectional shape of the main body is an isosceles trapezoid, an upper base of the isosceles trapezoid corresponds to the outer side surface of the main body, and a lower base of the isosceles trapezoid corresponds to the inner side surface of the main body.

Accordingly, the overall structure of the mold for manufacturing the seal ring 20 'can refer to fig. 7 to 13, except that in the structure shown in fig. 12 and 13, the mold for manufacturing the seal ring 20' needs to change the cross section of the upper molding surface area 312, which is a straight line segment at present, into a diagonal line segment.

It should be noted that another cross-sectional view of the seal ring 20 shown in fig. 4 can be seen from fig. 15, which is shown by the seal ring 20 ″ in fig. 15. That is, the embodiment of the present invention provides another side sealing gasket 20 ″ with a cross section as shown in fig. 15. The seal ring 20 "also includes a main body (not labeled) and a first curved protrusion (not labeled). Also, the body has an upper end peripheral surface (not labeled) and a lower end peripheral surface (not labeled). The main body also has an outer peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface, and an inner peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface. The first curved surface protrusion surrounds the outer circumferential side surface of the entire body. The height of the first curved surface protrusion is smaller than that of the peripheral side surface of the main body. Please refer to the foregoing embodiments correspondingly. In this embodiment, as shown in fig. 15, the cross-sectional shape of the main body is an isosceles trapezoid, a bottom of the isosceles trapezoid corresponds to the outer side surface of the main body, and an upper bottom of the isosceles trapezoid corresponds to the inner side surface of the main body.

Correspondingly, the overall structure of the mold for manufacturing the seal ring 20 "can refer to fig. 7 to 13, except that in the structure shown in fig. 12 and 13, the mold for manufacturing the seal ring 20" needs to change the cross section of the upper molding surface area 312, which is a straight line segment at present, into a diagonal line segment.

The embodiment of the present invention provides another side sealing ring 50, as shown in fig. 16, and the cross section thereof is shown in fig. 17. The seal ring 50 also includes a main body 51 and a first curved protrusion 52. Also, the body has an upper end peripheral surface (not labeled) and a lower end peripheral surface (not labeled). The main body also has an outer peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface, and an inner peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface. The first curved surface protrusion surrounds the outer circumferential side surface of the entire body. The height of the first curved surface protrusion is smaller than that of the peripheral side surface of the main body. Please refer to the foregoing embodiments correspondingly. In this embodiment, as shown in fig. 15, the cross-sectional shape of the main body is rectangular. In this embodiment, the seal ring 50 further includes a second curved protrusion 53 that surrounds the entire inner peripheral side surface of the main body 51.

In the present embodiment, the height midpoint of the second curved protrusion 53 coincides with the height midpoint of the inner peripheral side surface. That is, the height midpoint of the second curved protrusion 53 coincides with the height midpoint of the body 51.

In this embodiment, the cross section of the second curved protrusion is a second arch. The chords of the second arch are one fifth to four fifths of the height of the peripheral side of the body. In a further alternative, the chord of the second arcuate shape may be one third to two thirds, for example in particular one half, of the height of the peripheral side of the body.

In other embodiments, the second curved protrusion may have a second semi-circular cross-section. When the section of the second curved surface bulge is a second semicircle, the diameter of the second semicircle is one fifth to four fifths of the height of the inner peripheral side surface of the main body.

Accordingly, a gasket manufacturing mold for manufacturing the gasket 50 may refer to fig. 7 to 13 in its overall structure, except that in the structure shown in fig. 12 and 13, the mold for manufacturing the gasket 50 is required to form a second curved groove (not shown) in a core. I.e., the seal ring making mold used to make the seal ring 50, the upper mold may further include a second curved groove around the entire core side. The height midpoint of the second curved surface groove is coincided with the height midpoint of the side surface of the core. The second curved groove of the corresponding mold has a second arcuate shape in cross section corresponding to the second arcuate shape of the second curved protrusion 53. Likewise, the chords of the second arch are one fifth to four fifths of the height of the sides of the core, and further alternatively may be one third to two thirds. The cross section of the second curved groove can also be a second semicircle. When the cross-section of the second curved groove is a second semicircle, the diameter of the second semicircle may be one fifth to four fifths of the height of the side surface of the core.

The embodiment of the present invention provides another side sealing ring 60, as shown in fig. 18, the cross section of which is shown in fig. 19, and the three-dimensional shape of which is shown in force path 20. The seal ring 60 likewise includes a main body (not referenced) and a first curved protrusion (not referenced), i.e., the cross-section shown in fig. 18 is similar to that of fig. 5, but fig. 18 and 20 collectively show that the seal ring 60 is entirely of an elongated ring type, rather than an O-ring type.

The body of the seal ring 60 also has an upper end peripheral surface (not labeled) and a lower end peripheral surface (not labeled). The main body also has an outer peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface, and an inner peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface. The first curved surface protrusion surrounds the outer circumferential side surface of the entire body. The height of the first curved surface protrusion is smaller than that of the peripheral side surface of the main body. Please refer to the foregoing embodiments correspondingly. In this embodiment, as shown in fig. 18, the cross-sectional shape of the main body is rectangular.

The embodiment of the present invention provides another side sealing ring 70, as shown in fig. 18. The sealing ring 70 also comprises a main body (not shown) and a first curved protrusion (not shown) whose cross-section can be referred to in fig. 5 and 6, except that the ring of the sealing ring 70 is in the shape of a chamfered rectangle, similar to a racetrack, rather than an O-ring. The body of the seal ring 70 also has an upper end peripheral surface (not labeled) and a lower end peripheral surface (not labeled). The main body also has an outer peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface, and an inner peripheral side surface (not labeled) between the upper end peripheral surface and the lower end peripheral surface. The first curved surface protrusion surrounds the outer circumferential side surface of the entire body. The height of the first curved surface protrusion is smaller than that of the peripheral side surface of the main body. Please refer to the foregoing embodiments correspondingly.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims (10)

1. A seal ring manufacturing mold, comprising:

an upper die having an upper cavity region;

a lower die having a lower cavity region;

it is characterized in that the preparation method is characterized in that,

the upper cavity region is provided with a core, and the lower end face of the core is provided with a first groove; the upper cavity region also has an upper molding surface region surrounding the core, the upper cavity region also having a second groove surrounding the upper molding surface region;

the lower cavity region is provided with a lower cavity, the lower cavity is provided with a side wall, the side wall is provided with a first curved surface groove, and the height of the first curved surface groove is smaller than that of the side wall of the lower cavity.

2. The mold for forming a gasket of claim 1 wherein the midpoint of the height of said first curved groove coincides with the midpoint of the height of said sidewall.

3. The mold for forming a seal ring according to claim 1, wherein the upper molding surface region has a cross section of a straight line segment, an oblique line segment, a convex curve segment or a concave curve segment.

4. The mold for making a seal ring according to claim 1, wherein the bottom of the lower cavity has a lower core-receiving surface area and a lower molding surface area, the lower core-receiving surface area is configured to correspond to the lower end surface of the core, and the lower molding surface area surrounds the lower core-receiving surface area; the cross section of the lower molding surface area is a straight line segment, an inclined line segment, a convex curve segment or a concave curve segment.

5. The mold for manufacturing a seal ring according to any one of claims 1 to 4, wherein the first curved groove has a first semicircular shape or a first arcuate shape in cross section.

6. The mold for forming a seal ring according to claim 5,

when the section of the first curved surface groove shows the first semicircle, the diameter of the first semicircle is one fifth to four fifths of the height of the side wall of the lower cavity;

when the section of the first curved surface groove shows the first arc shape, the chord of the first arc shape is one fifth to four fifths of the height of the side wall of the lower cavity.

7. The mold for manufacturing a seal ring according to claim 1, wherein the upper mold further comprises: a second curved groove surrounding the entire side of the core.

8. The mold for forming a gasket of claim 7 wherein the second curved groove has a midpoint in height that coincides with a midpoint in height of the side surface of the core.

9. The mold for forming a seal ring according to claim 8, wherein the second curved groove has a second semicircular cross section; or the section of the second curved surface groove is in a second arch shape.

10. The mold for making a seal ring according to claim 9,

when the section of the second curved surface groove is in the shape of a second semicircle, the diameter of the second semicircle is one fifth to four fifths of the height of the side surface of the core;

when the section of the second curved surface groove is in a second arc shape, the chord of the second arc shape is one fifth to four fifths of the height of the side surface of the core.

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