A sealing rubber sleeve and its side ring cutting fixture

Abstract

The present invention discloses a sealing rubber sleeve and a side-circumferential cutting fixture thereof. The sealing rubber sleeve comprises a concave sealing cap body with a notch formed therein, dividing the sealing cap body into a sealing cap body and a sealing cap top. Pressure on the inner wall of the sealing cap top forces the notch to open and flow out of the sealed fluid. The sealing rubber sleeve structure of the present invention enables one-way flow of the sealed fluid. When the sealing fluid has a certain pressure, it pushes the sealing cap top, opening the notch and allowing the fluid to flow out. When there is no pressure or the pressure is low, the ribs remain in their normal state to seal.

Description

Technical Field

[0001] The present invention relates to the technical field of seals and processing fixtures thereof, and specifically to a sealing rubber sleeve and a side ring cutting fixture thereof. Background Art

[0002] Seals are materials or components used to prevent fluids or solid particles from leaking between adjacent mating surfaces and to prevent external impurities such as dust and moisture from invading the interior of machinery and equipment. Currently, they are primarily categorized as shaft seals and hole seals. Shaft seals are often annular and fit onto shafts for sealing. Hole seals are primarily used to seal end faces. Existing hole seals often feature a cross or M-shaped cutout in the center of the concave structure. This cutout is manufactured using traditional punching techniques. After processing, the seal is required to remain closed when not under pressure and open when under pressure. During use, these seals are opened from the center to the edges by the pressure of the fluid. Because the center of the seal's cutout is weaker than the rest of the seal, leakage is more likely to occur under even slight fluid pressure. Furthermore, after a period of use, the center portion can deform, resulting in a poor seal.

[0003] Therefore, a new type of seal needs to be invented to solve the above problems. Summary of the Invention

[0004] In response to the above situation, the present invention proposes a sealing rubber sleeve and a side ring cutting clamp thereof. The sealing rubber sleeve can be used for one-way sealing and is opened by the pressure of the sealed fluid. The clamp has the advantages of easy operation, high cutting precision, and good stability of the cut products. It solves the problem of poor sealing during traditional one-time molding through a mold, and realizes the mass production of elastic rubber sleeve side ring cutting products.

[0005] A sealing rubber sleeve of the present invention comprises a sealing cap body with a concave structure. A notch is provided on the sealing cap body, which divides the sealing cap body into a sealing cap body and a sealing cap top. The sealed fluid acts on the inner wall of the sealing cap top through pressure, driving the notch to open and flow out.

[0006] Specifically, the material of the sealing rubber sleeve is any one of silicone rubber, ethylene propylene rubber or fluororubber.

[0007] Furthermore, it also includes a sealing brim, which is arranged at the edge of the sealing cap body. The sealing brim and the sealing cap body are an integrated structure. There are multiple incisions, and the multiple incisions are cut around the sealing cap body. The sealing cap body and the sealing cap top are connected by ribs produced by adjacent incisions.

[0008] Furthermore, the sealing brim is arranged on the outer edge of the sealing cap body, and the sealing brim is arranged perpendicular to the sealing cap body.

[0009] Furthermore, the incision is cut obliquely around the sealing cap body, and the rib line is a trapezoidal structure. The large end of the trapezoidal structure is connected to the sealing cap body, and the small end is connected to the sealing cap top.

[0010] Specifically, the transverse cross-sectional structure of the sealing cap body is any one of a triangle, a rectangle and a circle.

[0011] Preferably, the transverse cross-sectional structure of the sealing cap body is circular, the central angle of the incision is 110°-240°, and the number of the incisions is 2-6.

[0012] The side ring cutting fixture based on the sealing rubber sleeve includes a support seat and a cutting sleeve. One end of the support seat is provided with a first step structure for supporting the sealing cap body. The cutting sleeve is detachably mounted on the outside of the first step structure. The side of the cutting sleeve is provided with a cutting slit, and the length and path of the cutting slit are the same as those of the incision.

[0013] Furthermore, there are one or more slits, and a positioning structure is provided between the slit jacket and the support seat.

[0014] Specifically, the positioning structure includes a first pin hole, a second pin hole and a pin shaft. The pin shaft passes through the first pin hole and the second pin hole for positioning. The first pin hole is set through the side wall of the incision sleeve, and the second pin hole is set on the side wall of the support seat.

[0015] There are multiple second pin holes, which are arranged around the side wall of the support seat.

[0016] More specifically, the width of the slit is 0.1-1.5 mm.

[0017] Furthermore, the cutout jacket is provided with a second step structure for pressing and sealing the brim.

[0018] Further preferably, it also includes a fixing ring, which is provided with a third step structure, the first step structure includes a first step and a second step, the first step is used to support the sealing cap body, the fixing ring and the side of the second step are detachably assembled through a threaded structure, and the third step structure is used to tighten the sealing cap brim.

[0019] Preferably, the outer surface of the fixing ring is knurled.

[0020] Further preferably, the thread structure is a T-type thread structure.

[0021] Furthermore, it also includes a rotating seat, and the other end of the support seat is rotatably connected to the cavity of the rotating seat.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The sealing rubber sleeve structure of the present invention can realize one-way flow of the sealed fluid. When the sealing fluid has a certain pressure, the sealing cap top is pushed to open the incision and the fluid flows out; when there is no pressure or the pressure is low, the ribs remain in a normal state to seal.

[0024] 2. The length of the ribs produced by cutting is controlled by the length of the axial superposition between adjacent incisions, thereby controlling the distance between the sealing cap body and the sealing cap top after the sealing sleeve is opened. When the sealing sleeve is used as a valve, the maximum flow rate of the fluid can be controlled.

[0025] 3. The incision of the sealing rubber sleeve is generated by cutting with a knife. No material is removed and the incision is tightly fitted, thus having a better sealing effect.

[0026] 4. The clamp structure of the present invention has the functions of supporting, fixing and side cutting, which can support and fix the sealing rubber sleeve so that it can withstand the force of the cutter during side cutting, and the position remains fixed without displacement, thereby achieving the purpose of accurate side cutting.

[0027] 5. The incision jacket of the clamp structure of the present invention has a quick-release function, which can realize the quick-release of a sealing rubber sleeve with a small volume, many circular cutting lines and a large angle by rotating the incision jacket. At the same time, since the sealing rubber sleeve only needs to be incised according to the existing cutting path on the incision jacket, the product quality stability and accuracy can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of the sealing rubber sleeve in the closed state in Example 1;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of the sealing rubber sleeve in the open state in this embodiment 1, in which the arrows indicate the flow direction of the fluid;

[0030] Figure 3 Schematic diagram of the structure of the side ring cutting fixture in Example 1;

[0031] Figure 4 Schematic diagram of the structure of the side ring cutting fixture in Example 2.

[0032] Among them, 1-sealing brim, 2-sealing cap body, 3-incision, 4-sealing cap body, 5-sealing cap top, 6-rib line, 7-support seat, 8-incision jacket, 9-first step structure, 10-slit, 11-positioning structure, 12-first pin hole, 13-second pin hole, 14-pin shaft, 15-second step structure, 16-fixing ring, 17-third step structure, 18-first step, 19-second step, 20-rotating seat, 21-cavity, 22-cutter, 23-sealing rubber sleeve. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figure 1 、 Figure 2 As shown, a sealing rubber sleeve of the present invention includes a concave structure sealing cap body, and a cut is opened on the sealing cap body, which divides the sealing cap body into a sealing cap body and a sealing cap top. The sealed fluid acts on the inner wall of the sealing cap top through pressure, driving the cut to open and flow out.

[0036] The material of the sealing rubber sleeve is silica gel, which has good tensile strength, is non-toxic and odorless, and has a long service life.

[0037] The device further includes a sealing brim, which is disposed on the outer edge of the sealing cap body. The sealing brim and the sealing cap body are integrally structured. The two incisions are cut around the sealing cap body, and the sealing cap body and the sealing cap top are connected by a rib created by adjacent incisions. The rib is the axial length of the adjacent incisions. The longer the rib, the greater the pressure required on the inner wall of the sealing cap top to force the incision to open.

[0038] The incision is cut obliquely around the sealing cap body, and the rib line is a trapezoidal structure. The large end of the trapezoidal structure is connected to the sealing cap body, and the small end is connected to the sealing cap top.

[0039] The transverse cross-section structure of the sealing cap body is circular. The transverse cross-section structure of the sealing cap body is circular, and the center angle of the cutout is 240°.

[0040] like Figure 3 As shown, the side ring cutting fixture based on the sealing rubber sleeve includes a support seat and a cutting sleeve. One end of the support seat is provided with a first step structure for supporting the sealing cap body. The cutting sleeve is detachably mounted on the outside of the first step structure. The side of the cutting sleeve is provided with a slit, and the length and path of the slit are the same as those of the incision.

[0041] There are two slits, and a positioning structure is provided between the slit jacket and the support seat.

[0042] The positioning structure includes a first pin hole, a second pin hole and a pin shaft. The pin shaft passes through the first pin hole and the second pin hole for positioning. The first pin hole is set through the side wall of the incision sleeve, and the second pin hole is set on the side wall of the support seat.

[0043] The width of the slit is 0.6 mm, and the slit jacket is provided with a second step structure for pressing and sealing the brim.

[0044] It also includes a rotating seat, the other end of the support seat is rotatably connected to the cavity of the rotating seat, a bearing is installed in the cavity, and the support seat is sleeved in the bearing.

[0045] In this embodiment, the sealing rubber sleeve is integrally formed by a mold using a rubber molding process, and after forming, an incision is made by a side ring cutting fixture. The steps of making the incision are as follows: first, the sealing cap body of the sealing rubber sleeve is fitted onto the first step structure, the surface of the sealing rubber sleeve is squeezed, the air in the sealing rubber sleeve is removed, and the sealing rubber sleeve is completely fitted with the support seat. Then, the incision jacket is fitted onto the sealing rubber sleeve, the sealing brim is pressed tightly by the second step structure, the first pin hole and the second pin hole are aligned, and the pin shaft is inserted to position the incision jacket and the support seat. The cutter cuts the sealing rubber sleeve along the path of the slit. The blade thickness of the cutter is 0.4 mm. The sealing rubber sleeve is cut along the two slits respectively to form two incisions. After the cutting is completed, the pin is removed, and the incision jacket and the sealing rubber sleeve are removed in turn. Another way of cutting the incision can also be used: the cutter pierces the sealing rubber sleeve along the slit, keeps the cutter fixed, and rotates the support seat to cut the incision.

[0046] Example 2

[0047] A sealing rubber sleeve of the present invention comprises a sealing cap body with a concave structure. A notch is provided on the sealing cap body, which divides the sealing cap body into a sealing cap body and a sealing cap top. The sealed fluid acts on the inner wall of the sealing cap top through pressure, driving the notch to open and flow out.

[0048] Specifically, the material of the sealing rubber sleeve is silicone.

[0049] It also includes a sealing brim, which is arranged on the outer edge of the sealing cap body. The sealing brim and the sealing cap body are an integrated structure. There are four incisions, and the four incisions are cut around the sealing cap body. The sealing cap body and the sealing cap top are connected by ribs produced by adjacent incisions.

[0050] The incision is cut obliquely around the sealing cap body, and the rib line is a trapezoidal structure. The large end of the trapezoidal structure is connected to the sealing cap body, and the small end is connected to the sealing cap top, ensuring that the rib line has good strength.

[0051] The transverse cross-sectional structure of the sealing cap body is circular, the central angle of the cutout is 165°, and there are four cutouts.

[0052] like Figure 4As shown, the side ring cutting fixture based on the sealing rubber sleeve includes a support seat and a cutting sleeve. One end of the support seat is provided with a first step structure for supporting the sealing cap body. The cutting sleeve is detachably mounted on the outside of the first step structure. The side of the cutting sleeve is provided with a slit, and the length and path of the slit are the same as those of the incision.

[0053] There is one slit, and a positioning structure is provided between the slit jacket and the support seat.

[0054] Specifically, the positioning structure includes a first pin hole, a second pin hole and a pin shaft. The pin shaft passes through the first pin hole and the second pin hole for positioning. The first pin hole is set through the side wall of the incision sleeve, and the second pin hole is set on the side wall of the support seat.

[0055] There are four second pin holes arranged around the side wall of the support seat. The four second pin holes on the support seat are evenly distributed with adjacent angles of 90°, and the width of the slit is 0.8 mm.

[0056] The device further includes a fixing ring having a third step structure. The first step structure includes a first step and a second step. The first step is used to support the sealing cap body. The fixing ring and the side of the second step are detachably assembled via a T-shaped thread structure. The third step structure is used to compress the sealing cap brim. The outer surface of the fixing ring is knurled to facilitate quick disassembly and assembly.

[0057] It also includes a rotating seat, and the other end of the support seat is rotatably connected to the cavity of the rotating seat.

[0058] The sealing rubber sleeve is integrally formed by a mold using a rubber molding process, and after forming, an incision is made by a side ring cutting fixture. The steps of making the incision are as follows: first, the sealing cap body of the sealing rubber sleeve is fitted with the first step structure, the surface of the sealing rubber sleeve is squeezed, the air in the sealing rubber sleeve is removed, and the sealing rubber sleeve is completely fitted with the support seat. The fixing ring is fitted and the thread is tightened, the sealing brim is pressed by the third step structure, and then the incision jacket is fitted with the positioning pin. The cutter cuts the sealing rubber sleeve along the path of the slit. After completing the cutting of one incision, the positioning pin is removed, and the incision jacket is rotated to another second pin hole position for positioning, and then another incision is cut until the cutting of four incisions is completed. In this embodiment, only one slit is needed to complete the cutting of four incisions through the positioning structure, so as to avoid damage to the incision jacket structure when there are too many slits, resulting in insufficient strength, affecting the service life and processing difficulty. The cutting jacket can be prepared by any of machining, casting or 3D printing. In this embodiment, wire cutting machine processing is used.

[0059] Example 3

[0060] A sealing rubber sleeve of the present invention comprises a sealing cap body with a concave structure. A notch is provided on the sealing cap body, which divides the sealing cap body into a sealing cap body and a sealing cap top. The sealed fluid acts on the inner wall of the sealing cap top through pressure, driving the notch to open and flow out.

[0061] The material of the sealing rubber sleeve is ethylene propylene rubber.

[0062] It also includes a sealing brim, which is arranged at the edge of the sealing cap body. The sealing brim and the sealing cap body are an integrated structure. There are three incisions, and the three incisions are cut around the sealing cap body. The sealing cap body and the sealing cap top are connected by ribs produced by adjacent incisions.

[0063] The incision is cut obliquely around the sealing cap body, and the rib line is a trapezoidal structure. The large end of the trapezoidal structure is connected to the sealing cap body, and the small end is connected to the sealing cap top.

[0064] The transverse cross-sectional structure of the sealing cap body is triangular, and in another embodiment is rectangular.

[0065] The side ring cutting fixture based on the sealing rubber sleeve includes a support seat and a cutting sleeve. One end of the support seat is provided with a first step structure for supporting the sealing cap body. The cutting sleeve is detachably mounted on the outside of the first step structure. The side of the cutting sleeve is provided with a cutting slit, and the length and path of the cutting slit are the same as those of the incision.

[0066] There is one cutting slit, and a positioning structure is provided between the cutting jacket and the support seat. The width of the cutting slit is 1.4 mm, and the thickness of the cutting blade is 0.9 mm.

[0067] It also includes a fixing ring, which is provided with a third step structure. The first step structure includes a first step and a second step. The first step is used to support the sealing cap body. The fixing ring and the side of the second step are detachably assembled through a threaded structure. The third step structure is used to tighten the sealing cap brim.

[0068] The transverse cross-sectional structures of the cutting jacket, the supporting seat and the fixing ring are all triangular, and the triangular structure is positioned by suiting and positioning, and three cuttings are cut in sequence.

Claims

1. A side ring cutting fixture for a sealing rubber sleeve, characterized in that The sealing cap comprises a concave structure, wherein the sealing cap has a notch formed thereon, the notch dividing the sealing cap into a sealing cap body and a sealing cap top, and the sealed fluid acts on the inner wall of the sealing cap top through pressure, driving the notch to open and flow out; It includes a support base and a notch jacket, wherein one end of the support base is provided with a first step structure for supporting the sealing cap body, and the notch jacket is detachably sleeved on the outside of the first step structure, and a slit is provided on the side of the notch jacket, and the length and path of the slit are the same as those of the notch; A positioning structure is provided between the notch jacket and the support seat; The positioning structure includes a first pin hole, a second pin hole and a pin shaft. The pin shaft passes through the first pin hole and the second pin hole for positioning. The first pin hole is set through the side wall of the incision sleeve, and the second pin hole is set on the side wall of the support seat.

2. The side ring cutting fixture of the sealing rubber sleeve according to claim 1, characterized in that It also includes a sealing brim, which is arranged at the edge of the sealing cap body. The sealing brim and the sealing cap body are an integrated structure. There are multiple incisions, and the multiple incisions are cut around the sealing cap body. The sealing cap body and the sealing cap top are connected by ribs produced by adjacent incisions.

3. The side ring cutting fixture of the sealing rubber sleeve according to claim 2, characterized in that The incision is cut obliquely around the sealing cap body, and the rib line is a trapezoidal structure. The large end of the trapezoidal structure is connected to the sealing cap body, and the small end is connected to the sealing cap top.

4. The side ring cutting fixture of the sealing rubber sleeve according to claim 3, characterized in that The transverse cross-sectional structure of the sealing cap body is any one of a triangle, a rectangle and a circle.

5. The side ring cutting fixture of the sealing rubber sleeve according to claim 4, characterized in that The transverse cross-sectional structure of the sealing cap body is circular, the central angle of the incision is 110°-240°, and the number of the incisions is 2-6.

6. The side ring cutting fixture of the sealing rubber sleeve according to claim 1, characterized in that The number of the slits is one or more.

7. The side ring cutting fixture of the sealing rubber sleeve according to claim 6, characterized in that The incision jacket is provided with a second step structure for pressing and sealing the brim.

8. The side ring cutting fixture for the sealing rubber sleeve according to claim 6, characterized in that It also includes a fixing ring, which is provided with a third step structure. The first step structure includes a first step and a second step. The first step is used to support the sealing cap body. The fixing ring and the side of the second step are detachably assembled through a threaded structure. The third step structure is used to tighten the sealing cap brim.

9. The side ring cutting fixture for the sealing rubber sleeve according to claim 8, characterized in that It also includes a rotating seat, and the other end of the support seat is rotatably connected to the cavity of the rotating seat.

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