CN201373101Y - Compounded rubber sealing strip - Google Patents

Abstract

The utility model provides a compounded rubber sealing strip which aims at the insufficiency of the prior art and can effectively solve the plane sealing problem of a box hole. The compounded rubber sealing strip has sealing reliability, long service life, and the like. The compounded rubber sealing strip comprises a sealing body and a sealing ring and is characterized in that a groove is formed on the sealing body, the bottom surface of the sealing body is in a wave shape, the section of the sealing ring is circular, and the sealing ring is inlaid into the groove. Because the structures of the sealing body and the sealing ring are improved, the compounded rubber sealing strip can effectively and reliably complete the seal between the box holes or cylinder holes and has simple operation, sealing reliability and long service life.

Description

The compounded rubber Stamping Steel Ribbon

Technical field

The utility model belongs to the plane sealing structure in the mechanical industry, is suitable for the sealing of case mouth or nozzle, is a kind of improvement of case mouth gasket structure specifically.

Background technique

For a long time, the plane sealing of casing or cylindrical shell adopts single rubber strip sealing mostly, or " O " type of employing coil structures form, the serviceability temperature of adhesive tape is-40 ℃～60 ℃, and to the requirement of sealing material and sealing be: 1. material compactness is good, is difficult for leaking medium; 2. suitable mechanical strength and hardness are arranged; 3. compressibility and rebound elasticity are good, and permanent deformation is little; 4. do not soften under the high temperature, do not decompose non-sclerous, not embrittlement under the low temperature.5. has the ductility that engages with sealing surface; 6. ageing resistance is good, and is durable in use; 7. convenient processing and manufacture, low price is drawn materials easily etc.Single rubber strip can't satisfy above-mentioned conditional request simultaneously aspect selection, adopt " O " type coil structures form, need be at case oral thermometer face processing sealed groove, and the processing sealed groove exists very big difficulty, complex process, and cost height on big case mouth plane.How a kind of new molding box mouth plane sealing structure is provided, makes case mouth plane sealing reliable, ageing resistance is good, long service life, and convenient processing and manufacture, it is easy to draw materials etc., and this has been to need the urgent technical problem that solves at present.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and a kind of compounded rubber Stamping Steel Ribbon is provided, and can effectively solve the plane sealing problem of case mouth.It is reliable that the compounded rubber Stamping Steel Ribbon has sealing, and long service life is waited until characteristics.

The utility model is achieved by the following technical solution: a kind of compounded rubber Stamping Steel Ribbon, comprise seal, seal ring, it is characterized in that: described seal is formed with groove, and the seal bottom surface is a waveform, described seal ring cross section is circular, and described seal ring is embedded in the described groove.

The utlity model has following additional technical feature:

Described groove shapes is a dovetail groove, is interference fit between described seal ring and the described seal dovetail groove, and described seal ring end face exceeds described seal end face.

Described seal bottom surface should form crest and the trough more than two at least.

The altitude range that described seal ring end face exceeds described seal end face is 2～5mm.

Have the extension base on the junction surface of described seal bottom and casing, described extension has a plurality of screw holes on the base.

Described seal ring has hollow hole, to add aximal deformation value, improves sealing.

Described seal ring adopts low-hardness rubber to make, and described seal adopts high durometer rubber to make, and both shore hardness difference scopes are 5～30.

A kind of case mouth compounded rubber Stamping Steel Ribbon of the present utility model, comprise seal, seal ring two-part, seal ring adopts rebound elasticity good, the natural rubber that set deformation volume is little is made, overcome the big shortcoming of former adhesive tape set deformation volume, the seal ring cross section is circular, and has hollow hole, be embedded in the seal groove, solve the problem of natural rubber uvioresistant difference.Sealed body structure is a dovetail groove, suppresses the distortion of seal ring, has solved the difficulty that is difficult for processing at box sealing face fluting, prevents packaging box simultaneously when unpacking, and seal ring separates with seal.Seal adopts ethylene propylene diene rubber to make, and has good high temperature performance and ageing resistance.Because exist certain rigidity poor between seal and the seal ring, both amount of deformation there are differences, and can effectively improve sealing effect.There are three R of place projections the seal bottom surface, forms crest and trough, and during sealing, the effective seal band can be played in the R prominence, has strengthened the lower box sealing.

The utility model has many advantages and good effect compared with prior art:

1. owing to the improvement to seal and seal ring structure, the utility model can be finished the sealing between case mouth or the nozzle effectively reliably, and is simple to operate, and sealing is reliable, long service life.

2. the utility model has solved the problem of case mouth sealing surface processing sealed groove, because of case mouth sealing surface need not machined grooves, has reduced complicated step, has improved efficient, has reduced cost.

3. the utility model compact structure is easy to make, is a kind of case mouth sealed product that shows unique characteristics, and is particularly suitable for the case mouth sealing of large-size box, also can be used in the sealing of nozzle or other similar structure, and is of many uses.

Description of drawings

Local sectional structure chart when Fig. 1 does not compress for the utility model compounded rubber Stamping Steel Ribbon;

Local sectional structure chart when Fig. 2 is the compression of the utility model compounded rubber Stamping Steel Ribbon.

Embodiment

Below in conjunction with accompanying drawing the utility model is described in further detail:

Referring to Fig. 1 and Fig. 2, a kind of case mouth Planar Compound rubber weather strip embodiment, seal 2 has the base 2-1 of extension, extends base 2-1 and has several screw holes, by set screw 1 seal 2 is fixed on the nowel mouth sealing surface 4.Seal 2 bottom surfaces have three R projection 2-2, also can be referred to as three crests, and R is generally 3～6mm, and present embodiment R is 4mm, and R projection 2-2 closely contacts with nowel mouth sealing surface 4 during pressurized, forms effective sealing strip of seal 2 bottom surfaces, as shown in Figure 2.Seal ring 3 sectional shapes are circular, and have hollow hole 3-1, to improve amount of deformation, are embedded in the dovetail groove 2-3 of seal 2 to seal ring 3 interference.When not compressing, seal ring 3 end faces exceed about seal 2 end face 3mm.

Working procedure of the present utility model is: in the fit process of product, seal ring 3 produces resiliently deformable earlier, utilizes seal ring 3 good rebound elasticitys to guarantee the upper body sealing.In the time of in seal ring 3 is embedded in composite rubber strip seal groove 2-3 fully, continue compression, seal 2 produces resiliently deformable, and seal 2 produces the auxiliary seal effect with the contact position, upper body to top box mouth sealing surface 5.Utilize the spring-back force of seal ring 3, seal 2 has many places R projection 2-2 with nowel mouth sealing surface 4 contact position nowel mouth sealing surface 4 is produced seal action, efficiently solve single structure rubber strip amount of deformation difference up and down, the problem that causes gas to leak from the adhesive tape bottom has easily improved sealing reliability.

Seal 2 increases with nowel mouth sealing surface 4 area of contact, decrement is little, set deformation volume to sizing material requires to reduce, test according to the sizing material physical and mechanical properties, for example get seal ring rubber at 60 ℃, 48h, according to the GB/T7759-1996 test determination, the set deformation volume of sample is 11%, and seal rubber is at 60 ℃, 48h, the sample set deformation volume is 19%, and behind the product zoarium, compounded rubber Stamping Steel Ribbon seal ring decrement is 3mm, set deformation volume is 0.11 * 3=0.33mm, composite rubber strip seal decrement is 3mm, and set deformation volume is 0.19 * 3=0.57mm, and the total compression amount of composite rubber strip is 6mm, set deformation volume amounts to 0.57+0.33=0.90mm, and the set deformation volume of composite rubber strip is $\frac{0.9}{6}\×100\%=15\%,$ The compounded rubber Stamping Steel Ribbon is satisfying under the ageing-resistant prerequisite, and the permanent compression set amount is significantly smaller than common adhesive tape, good sealing effect, long service life.

Certainly, above-mentioned explanation is not to be to restriction of the present utility model, and the utility model also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present utility model, the variation of making, remodeling, interpolation or replacement all should belong to the protection domain to model utility.

Claims (8)

1. a compounded rubber Stamping Steel Ribbon comprises seal, seal ring, it is characterized in that: described seal is formed with groove, and the seal bottom surface is a waveform, and described seal ring cross section is circular, and described seal ring is enclosed in the described groove.

2. compounded rubber Stamping Steel Ribbon according to claim 1 is characterized in that: be interference fit between described seal ring and the described seal groove, described seal ring end face exceeds described seal end face.

3. compounded rubber Stamping Steel Ribbon according to claim 1 is characterized in that: described seal groove shapes is a dovetail groove.

4. compounded rubber Stamping Steel Ribbon according to claim 1 is characterized in that: described seal bottom surface should form crest and the trough more than two at least.

5. compounded rubber Stamping Steel Ribbon according to claim 3 is characterized in that: do not compress when stressed, the altitude range that described seal ring end face exceeds described seal end face is 2～5mm.

6. compounded rubber Stamping Steel Ribbon according to claim 5 is characterized in that: have the extension base on the junction surface of described seal bottom and casing, described extension has a plurality of screw holes on the base.

7. compounded rubber Stamping Steel Ribbon according to claim 1 is characterized in that: described seal ring has hollow hole.

8. according to the described compounded rubber Stamping Steel Ribbon of any claim in the claim 1 to 7, it is characterized in that: described seal ring adopts low-hardness rubber to make, and described seal adopts high durometer rubber to make, and both shore hardness difference scopes are 5～30.

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