阅读说明：本技术 一种仿布式汽车门框密封条及其制备工艺 (Cloth-imitated automobile door frame sealing strip and preparation process thereof ) 是由 程朝武 于 2019-10-23 设计创作，主要内容包括：本发明涉及汽车门框密封条技术领域,且公开了一种仿布式汽车门框密封条及其制备工艺,包括发泡海绵密封条和夹持部,所述夹持部远离发泡海绵密封条的一端设有唇边,所述唇边的上表面黏接有装饰层,所述夹持部内设有两个对称分布的金属骨架,所述夹持部的内壁设有第一密封齿和第二密封齿。该仿布式汽车门框密封条及其制备工艺,具备能够有效提高密封条安装的便捷性,同时保障密封条的使用寿命,以及提高密封条的使用效果等优点。(The invention relates to the technical field of automobile door frame sealing strips and discloses a cloth-imitated automobile door frame sealing strip and a preparation process thereof. The imitation cloth type automobile door frame sealing strip and the preparation process thereof have the advantages that the convenience of installation of the sealing strip can be effectively improved, the service life of the sealing strip is guaranteed, the using effect of the sealing strip is improved, and the like.)

1. The utility model provides an imitative distributing type car door frame sealing strip, includes foaming sponge sealing strip (1) and clamping part (2), its characterized in that: one end of the clamping part (2) far away from the foaming sponge sealing strip (1) is provided with a lip edge (3), the upper surface of the lip edge (3) is adhered with a decorative layer (4), two metal frameworks (5) which are symmetrically distributed are arranged in the clamping part (2), and the inner wall of the clamping part (2) is provided with a first sealing tooth (6) and a second sealing tooth (7).

2. The imitation cloth type automobile door frame sealing strip of claim 1, characterized in that: foaming sponge sealing strip (1) is auricle shape, a plurality of bleeder vents (8) have been seted up to one side that foaming sponge sealing strip (1) bottom is close to clamping part (2), the minimum that highly is higher than foaming sponge sealing strip (1) of bleeder vent (8).

3. The imitation cloth type automobile door frame sealing strip of claim 1, characterized in that: the decorative layer (4) is made of imitation cloth.

4. The imitation cloth type automobile door frame sealing strip of claim 1, characterized in that: the clamping part (2) is U-shaped, and the length of the second sealing tooth (7) is far greater than that of the first sealing tooth (6).

5. The imitation cloth type automobile door frame sealing strip of claim 1, characterized in that: the foaming sponge sealing strip (1), the clamping part (2), the lip edge (3), the first sealing tooth (6) and the second sealing tooth (7) are of an integrated structure.

6. The imitation cloth type automobile door frame sealing strip of claim 1, characterized in that: the clamping part (2) is made of PVC rubber, the lip edge (3) is made of modified ethylene propylene rubber, and the foamed sponge sealing strip (1) is made of sponge rubber.

7. The preparation process of the imitation cloth type automobile door frame sealing strip is characterized by comprising the following steps of: the method comprises the following steps:

s1, preparing materials, namely preparing PVC rubber, sponge rubber and modified ethylene propylene rubber into elastomer particles, and removing rust of the metal framework (5) at the same time;

s2, co-extrusion molding, namely, passing the metal framework (5) through an extrusion die of a first extruder, and continuously extruding and attaching PVC rubber elastomer particles on the surface of the metal framework (5) through the first extruder according to the required cross-sectional shape; then, the metal framework (5) structure attached with the PVC rubber passes through an extrusion die of a second extruder, and meanwhile, modified ethylene propylene rubber elastomer particles and sponge rubber elastomer particles are jointly and continuously extruded out of the surface of the metal framework (5) structure attached with the PVC rubber through the second extruder according to the required cross-sectional shape, and then a semi-finished sealing strip is obtained;

s3, vulcanizing, namely vulcanizing the rubber of the semi-finished sealing strip manufactured in the S2, vulcanizing the rubber sealing strip by a microwave heating continuous vulcanization technology, leading a vulcanized rubber product out of an outlet of a vulcanizing device, and then avoiding adhering decorative imitation cloth on a lip edge (3) of the sealing strip;

s4, spraying, namely drawing the sealing strip processed in the step S3 by a drawing machine with certain tension, and spraying the organic silicon coating material on the outer surface of the sealing part of the sealing strip along the full length range of the sealing strip by a spraying device;

s5, cooling, namely cooling and solidifying the sealing strip in the S4 through a water pool;

s6, cutting the strip, namely cutting the cooled sealing strip, wherein a large margin is left in the cutting;

s7, drilling holes, and then drilling air holes (8) on one side of the bottom end of the cut sealing strip foaming sponge sealing strip close to the clamping part;

s8, trimming the hole wall of the drilled sealing strip, ensuring that the air holes (8) are smooth, simultaneously accurately cutting the sealing strip, ensuring that the sealing strip is qualified in size, and finally packaging and storing the sealing strip.

Technical Field

The invention relates to the technical field of automobile door frame sealing strips, in particular to a cloth-imitated automobile door frame sealing strip and a preparation process thereof.

Background

The automobile sealing element comprises a sealing strip, an automobile door frame, a glass guide groove and the like. The automobile door frame sealing strip is one of the most important sealing strips in an automobile sealing strip product, the sealing performance of a cabin is directly related to the sealing performance of the cabin, the sealing quality evaluation of the whole automobile is dominant, the automobile door frame sealing strip is installed on the edge of a seam allowance of an automobile door frame, gaps between an automobile door and the automobile door frame are sealed, noise outside the automobile is isolated, water, dust and the like are prevented from permeating into the automobile, riding comfort is kept, when the automobile runs in the weather of wind and rain, the automobile door frame sealing strip also plays a role in reducing wind and rain noise in the automobile, and besides, the automobile door frame sealing strip also plays a role in compensating errors in sheet metal manufacturing and assembling.

The metal framework in the existing automobile door frame sealing strip is of a U-shaped structure, the structural strength of the sealing strip is too large due to the U-shaped structure, the sealing strip is inconvenient to bend, the metal framework is inconvenient to connect with the metal plate of the automobile door frame, time and labor are wasted, the convenience in installation of the sealing strip of the automobile door frame is influenced, a gap exists when the sealing strip is connected with the automobile door frame due to the fact that the sealing strip is inconvenient to bend, the sealing strip is wrinkled even, the service life of the sealing strip is influenced, and the use effect of the sealing strip can be.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides an imitation cloth type automobile door frame sealing strip and a preparation process thereof, which have the advantages of effectively improving the convenience of mounting the sealing strip, simultaneously ensuring the service life of the sealing strip, improving the using effect of the sealing strip and the like, and solve the problems that the sealing strip of the automobile door frame is inconvenient to bend due to overlarge structural strength, so that the sealing strip is inconvenient to connect with an automobile door frame metal plate, the convenience of mounting the sealing strip of the automobile door frame is influenced, and the service life of the sealing strip is influenced due to the existence of gaps when the sealing strip is connected with the automobile door frame due to inconvenient bending of the sealing strip.

(II) technical scheme

In order to achieve the purposes of effectively improving the installation convenience of the sealing strip, simultaneously ensuring the service life of the sealing strip and improving the use effect of the sealing strip, the invention provides the following technical scheme: the utility model provides an imitative distributing type car door frame sealing strip and preparation technology thereof, includes foaming sponge sealing strip and clamping part, the one end that foaming sponge sealing strip was kept away from to the clamping part is equipped with the lip limit, the upper surface bonding on lip limit has the decorative layer, be equipped with the metal framework of two symmetric distributions in the clamping part, the inner wall of clamping part is equipped with first sealed tooth and second sealed tooth.

Preferably, the foaming sponge sealing strip is auricle-shaped, a plurality of bleeder vents have been seted up to one side that the foaming sponge sealing strip bottom is close to the clamping part, the minimum that highly is higher than the foaming sponge sealing strip of bleeder vent.

Preferably, the decorative layer is made of imitation cloth.

Preferably, the clamping part is U-shaped, and the length of the second sealing tooth is far longer than that of the first sealing tooth.

Preferably, the foaming sponge sealing strip, the clamping part, the lip edge, the first sealing tooth and the second sealing tooth are of an integrated structure.

Preferably, the clamping part is made of PVC rubber, the lip edge is made of modified ethylene propylene rubber, and the foamed sponge sealing strip is made of sponge rubber.

A preparation process of a cloth-imitated automobile door frame sealing strip comprises the following steps:

s1, preparing materials, namely preparing PVC rubber, sponge rubber and modified ethylene propylene rubber into elastomer particles, and removing rust of the metal framework;

s2, co-extrusion molding, namely, passing the metal framework through an extrusion die of a first extruder, and continuously extruding PVC rubber elastomer particles to be attached to the surface of the metal framework through the first extruder according to the required cross-sectional shape; then, the metal framework structure attached with the PVC rubber passes through an extrusion die of a second extruder, and meanwhile, modified ethylene propylene rubber elastomer particles and sponge rubber elastomer particles are jointly and continuously extruded out of the surface of the metal framework structure attached with the PVC rubber through the second extruder according to the required cross-sectional shape, and then a semi-finished product of the sealing strip is obtained;

s3, vulcanizing, namely vulcanizing the rubber of the semi-finished sealing strip prepared in the S2, vulcanizing the rubber sealing strip by a microwave heating continuous vulcanization technology, leading a vulcanized rubber product out of an outlet of a vulcanizing device, and then avoiding adhering decorative imitation cloth on the lip edge of the sealing strip;

s4, spraying, namely drawing the sealing strip processed in the step S3 by a drawing machine with certain tension, and spraying the organic silicon coating material on the outer surface of the sealing part of the sealing strip along the full length range of the sealing strip by a spraying device;

s5, cooling, namely cooling and solidifying the sealing strip in the S4 through a water pool;

s6, cutting the strip, namely cutting the cooled sealing strip, wherein a large margin is left in the cutting;

s7, drilling holes, and then drilling air holes on one side, close to the clamping part, of the bottom end of the cut sealing strip foamed sponge sealing strip;

s8, trimming the hole wall of the drilled sealing strip, ensuring that the air holes are smooth, accurately cutting the sealing strip, ensuring that the size of the sealing strip is qualified, and finally packaging and storing the sealing strip.

(III) advantageous effects

Compared with the prior art, the invention provides the imitation cloth type automobile door frame sealing strip and the preparation process device thereof, and the imitation cloth type automobile door frame sealing strip has the following beneficial effects:

this imitative distributing type car door frame sealing strip and preparation technology thereof, through having metal framework, first sealed tooth and the sealed tooth of second, through setting up two solitary metal frameworks in the sealing strip, can not lead to the sealing strip hardness too high, make the sealing strip be convenient for crooked, when the first sealed tooth and the sealed tooth installation sealing strip of second through the clamping part, metal framework can be crooked wantonly, and can not cause the sealing strip to corrugate, guarantee sealing strip and car sheet metal connected's tightness, there can not be the gap, the convenience that the sealing strip was installed can effectively be improved to this mechanism, guarantee the life of sealing strip simultaneously, and improve the result of use of sealing strip.

Drawings

FIG. 1 is a schematic structural diagram of a cloth-like sealing strip for an automobile door frame and a preparation process thereof according to the present invention;

FIG. 2 is a schematic structural diagram of a portion A of a cloth-like automobile door frame sealing strip and a preparation process thereof, which are provided by the invention;

FIG. 3 is a schematic structural diagram of a section B of the imitation cloth type automobile door frame sealing strip and a preparation process thereof provided by the invention.

In the figure: 1 foaming sponge sealing strip, 2 clamping parts, 3 lips, 4 decorative layers, 5 metal frameworks, 6 first sealing teeth, 7 second sealing teeth and 8 air holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a cloth-like sealing strip for a door frame of an automobile and a process for manufacturing the same, the cloth-like sealing strip for a door frame of an automobile comprises a foamed sponge sealing strip 1 and a clamping portion 2, the foamed sponge sealing strip 1 has a smooth and beautiful surface, no joint mark, good elasticity and compression deformation resistance, excellent aging resistance, excellent flame retardant property, low smoke and low toxicity, and stable product performance, a lip 3 is arranged at one end of the clamping portion 2 away from the foamed sponge sealing strip 1, a decorative layer 4 is bonded to the upper surface of the lip 3, two symmetrically distributed metal frameworks 5 are arranged in the clamping portion 2, and first sealing teeth 6 and second sealing teeth 7 are arranged on the inner wall of the clamping portion 2.

Foaming sponge sealing strip 1 is auricle shape, and a plurality of bleeder vents 8 have been seted up to one side that 1 bottom of foaming sponge sealing strip is close to clamping part 2, and bleeder vent 8 highly is higher than the minimum of foaming sponge sealing strip 1, and bleeder vent 8 is located, and one side that clamping part 2 is close to in 1 bottom of foaming sponge sealing strip, and highly is higher than the minimum of foaming sponge sealing strip 1 and can avoid bleeder vent 8 to expose, and then improves the aesthetic property of sealing strip.

The material of decorative layer 4 is imitative cloth, and imitative cloth has the low price, can reduce the manufacturing cost of sealing strip.

Clamping part 2 is the U-shaped, the length of the sealed tooth of second 7 far big with first sealed tooth 6 can increase with car sheet metal connection's frictional force, the stability of guarantee sealing strip connection.

Foaming sponge sealing strip 1, clamping part 2, lip 3, first seal tooth 6 and second seal tooth 7 structure as an organic whole, the sealing strip of integrative structure can not be along with two fracture damages of long-time use, has ensured the life of sealing strip.

The clamping part 2 is made of PVC rubber, the lip 3 is made of modified ethylene propylene rubber, and the foamed sponge sealing strip 1 is made of sponge rubber;

the PVC rubber comprises the following components in percentage by weight: 49-73% of PVC; 8-22% of acrylate copolymer; 12-18% of a first plasticizer; 3-6% of a second plasticizer; 11-20% of calcium carbonate; 1.5 to 3 percent of calcium zinc stabilizer; 1.5-2% of dioctyl adipate; 0.6 to 3 percent of dioctyl sebacate; 3-5% of decabromodiphenylethane; 1.8 to 3.5 percent of antimony trioxide; polyethylene wax, 1.3-2%; 1.6 to 2 percent of rosin; 9-15% of carbon black;

the sponge rubber comprises the following components in percentage by weight: EPDM, 50-73%; 16-49% of carbon black; 17-33% of nano kaolin; 9-36% of calcium carbonate; 1.6 to 3.5 percent of calcium zinc stabilizer; 1.1 to 3.8 percent of stearic acid; anionic surfactant 1.01-1.3%; 3-9% of foam stabilizer, the surface of the sponge rubber is smooth and beautiful, has no joint mark, has good elasticity and compression deformation resistance, excellent aging resistance, excellent flame retardant property, low smoke and low toxicity, and stable product performance;

the modified ethylene propylene rubber comprises the following components in percentage by weight: EPDM, 49-60%; 30-45% of carbon black; 10-36% of nano kaolin; 11-37% of calcium carbonate; 1.6 to 3.5 percent of calcium zinc stabilizer; 1.1 to 3.8 percent of stearic acid; 1-2.5% of rosin; the ethylene propylene rubber has the characteristics of excellent ozone resistance, heat resistance, weather resistance and other aging resistance, good chemical resistance, electric insulation performance, impact elasticity, low-temperature performance, low density, high filling property, hot water resistance, water vapor resistance and the like.

A preparation process of a cloth-imitated automobile door frame sealing strip comprises the following steps:

s1, preparing materials, namely preparing PVC rubber, sponge rubber and modified ethylene propylene rubber into elastomer particles, and removing rust of the metal framework 5;

s2, co-extrusion molding, namely, passing the metal framework 5 through an extrusion die of a first extruder, and continuously extruding PVC rubber elastomer particles to be attached to the surface of the metal framework 5 through the first extruder according to the required cross-sectional shape; then, the metal framework 5 structure attached with the PVC rubber in the upper part passes through an extrusion die of a second extruder, and meanwhile, modified ethylene propylene rubber elastomer particles and sponge rubber elastomer particles are jointly and continuously extruded out of the surface of the metal framework 5 structure attached with the PVC rubber through the second extruder according to the required cross-sectional shape, and then a semi-finished product of the sealing strip is obtained;

s3, vulcanizing, namely vulcanizing the rubber of the semi-finished sealing strip prepared in the S2, vulcanizing the rubber sealing strip by a microwave heating continuous vulcanization technology, leading a vulcanized rubber product out of an outlet of a vulcanizing device, and then avoiding adhering decorative imitation cloth on the lip edge 3 of the sealing strip;

s4, spraying, namely drawing the sealing strip processed in the step S3 by a drawing machine with certain tension, and spraying the organic silicon coating material on the outer surface of the sealing part of the sealing strip along the full length range of the sealing strip by a spraying device;

s5, cooling, namely cooling and solidifying the sealing strip in the S4 through a water pool;

s6, cutting the strip, namely cutting the cooled sealing strip, wherein a large margin is left in the cutting;

s7, drilling holes, and then drilling air holes 8 on one side of the bottom end of the cut sealing strip foaming sponge sealing strip close to the clamping part;

s8, trimming the hole wall of the drilled sealing strip, ensuring that the air holes 8 are smooth, accurately cutting the sealing strip, ensuring that the sealing strip is qualified in size, and finally packaging and storing the sealing strip.

To sum up, this imitative distributing type car door frame sealing strip and preparation technology thereof through setting up two solitary metal framework 5 in the sealing strip, can not lead to the sealing strip hardness too high, make the sealing strip be convenient for crooked, when first sealing tooth 6 and the second sealing tooth 7 installation sealing strip through clamping part 2, metal framework 5 can be crooked wantonly, and can not cause the sealing strip to corrugate, guarantee sealing strip and car sheet metal connected's tightness, can not have the gap, this mechanism can effectively improve the convenience of sealing strip installation, guarantee the life of sealing strip simultaneously, and improve the result of use of sealing strip.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.