Composite bag skin, manufacturing method of bag skin and air spring applying bag skin

Abstract

The invention discloses a composite bag skin, a manufacturing method of the bag skin and an air spring applying the bag skin, the composite bag skin comprises a bag skin body, the bag skin body comprises first curtain cloth, a mixing area and second curtain cloth, one end of the second curtain cloth is in lap joint with the first curtain cloth, and the mixing area is formed between the first curtain cloth and the second curtain cloth; colloids are arranged on the inner walls and the outer walls of the first curtain cloth and the second curtain cloth; through the arrangement of the I-shaped first curtain cloth, the X-shaped second curtain cloth and the mixing area, the structure can be manufactured through a traditional lap joint technology, the I-shaped excellent torsion separation performance is achieved at the upper end of the axial bag skin, the size of the X-shaped crossed twill bag skin at the lower end is stable, and the lateral force and the torsion force borne by the bag skin in the steering process are reduced; decoupling of the upper functional area and the lower functional area can be almost completely achieved, so that the service life of the air spring is prolonged, and the replacement and maintenance frequency is reduced.

Description

Technical Field

[0001] The invention specifically relates to a composite capsule skin, a method for making the capsule skin and an empty spring using the capsule skin. Background Art

[0002] Air springs, commonly known as air springs, are components used in shock absorption and suspension systems and are widely used in automobiles, trucks, public transportation vehicles, and industrial equipment. The bladder skin (also known as the air bag skin) is a key component in the air spring system. Its main function is to contain and maintain compressed air.

[0003] At present, the traditional bladder skin structure is a cross structure with two layers of fabric overlapped and rolled up, with large torsional stiffness. The torsional stiffness of the bladder skins at the upper and lower ends are similar, and they cannot be decoupled during use, which affects the service life of the air spring and requires regular replacement. For this reason, we propose a composite bladder skin, a method for making a bladder skin, and an air spring using the bladder skin. Summary of the invention

[0004] The purpose of the present invention is to provide a composite bladder skin, a method for making the bladder skin and an empty spring using the bladder skin, so as to solve the problem in the above background technology that the existing bladder skin cannot be decoupled, which affects the service life of the empty spring.

[0005] To achieve the above object, the present invention provides the following technical solution: a composite bladder skin, comprising: a bladder skin body, the bladder skin body comprising a first curtain fabric, a mixing zone and a second curtain fabric, the first curtain fabric is overlapped at one end of the second curtain fabric, a mixing zone is formed between the first curtain fabric and the second curtain fabric, and the inner and outer walls of the first curtain fabric and the second curtain fabric are both provided with colloid;

[0006] Wherein, the cords of the first cord fabric are I-type, and the cords of the second cord fabric are X-type.

[0007] Preferably, the number of the first cord fabrics is 1-3 layers.

[0008] Preferably, the number of the second cord fabrics is 2-5 layers.

[0009] Preferably, the second cord fabric includes a first cord and a second cord, the first cord and the second cord are interlaced with each other, and an angle formed by the interlacing of the first cord and the second cord is 5°<α<60°.

[0010] Preferably, the material of the colloid is: chloroprene rubber.

[0011] A method for making a composite capsule skin comprises the following steps:

[0012] Step A: Roll the inner rubber into a mandrel, roll the lower end to overlap the second cord, leave a mixing area at the height of the second cord at the upper end, and then overlap the first cord on the mixing area;

[0013] Step B: Rolling the outer surface of the first cord fabric, the mixed area and the second cord fabric with outer rubber, and vulcanizing the molded part;

[0014] Step C: After vulcanization, a support ring is installed inside the mixing zone.

[0015] Preferably, in step A:

[0016] The second cord has two layers, and the first cord has three layers.

[0017] An application hollow spring with a composite capsule skin, comprising:

[0018] Base;

[0019] The capsule body is sleeved on the base;

[0020] A pressure cover is buckled on the top of the bladder skin body;

[0021] The protective tube is arranged on the inner wall of the bladder skin body, and a positioning ring is provided on the outer surface of the bladder skin body and is buckled with the protective tube.

[0022] Preferably, the casing and the positioning ring are both annular, and the length of the positioning ring is greater than the length of the casing.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention is provided with an I-type first curtain, an X-type second curtain and a mixed area, so as to avoid the traditional two-layer curtain overlap and roll cross formation of the bladder skin, which cannot be decoupled during use, affecting the service life of the air spring and making the later replacement more cumbersome. The present invention can be manufactured through the traditional overlapping process, and has the excellent torsional separation performance of the I-type at the upper end of the axial bladder skin and the dimensional stability of the X-type cross twill bladder skin at the lower end, which reduces the lateral force and torsional force borne by the bladder skin during steering. This structure can almost completely realize the decoupling of the upper and lower functional areas, thereby helping to increase the service life of the air spring, reduce the frequency of replacement and maintenance, and has a better use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the present invention;

[0026] Figure 2 is a schematic diagram of the second curtain structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the empty spring structure of the present invention.

[0028] In the figure: 1, bladder body; 11, first cord; 12, mixing zone; 13, second cord; 131, first cord; 132, second cord; 4, positioning ring; 5, casing; 6, pressure cover; 7, base. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 3 The present invention provides a technical solution: a composite bladder skin, comprising: a bladder skin body 1, the bladder skin body 1 comprising a first curtain 11, a mixing zone 12 and a second curtain 13, one end of the second curtain 13 is overlapped with the first curtain 11, and a mixing zone 12 is formed between the first curtain 11 and the second curtain 13, so that the decoupling of the upper and lower functional areas of the annular bladder skin body 1 can be achieved through the mixing zone 12, thereby facilitating the improvement of the service life of the air spring, and the inner and outer walls of the first curtain 11 and the second curtain 13 are both provided with colloid;

[0031] Among them, the cords of the first cord fabric 11 are I-type, which is convenient for improving the excellent torsional separation performance of the I-type at the upper end of the axial bladder, and the cords of the second cord fabric 13 are X-type, which is convenient for dimensional stability of the X-type cross twill bladder at the lower end.

[0032] Preferably, the first cord fabric 11 has 1 to 3 layers for better strength and excellent torsional separation performance.

[0033] Preferably, the number of the second curtain fabric 13 is 2-5 layers, for better strength and stability.

[0034] Preferably, the second cord 13 includes a first cord 131 and a second cord 132, the first cord 131 and the second cord 132 are interlaced with each other, and an angle formed by the interlacing of the first cord 131 and the second cord 132 is 5°<α<60°, which facilitates better stability and anti-torsion effect.

[0035] Preferably, the material of the colloid is neoprene, which is convenient for a better service life.

[0036] A method for making a composite capsule skin comprises the following steps:

[0037] Step A: Roll the inner rubber into a mandrel, roll the lower end to overlap the second cord 13, and leave a mixing area 12 at the height of the second cord 13 at the upper end, and then overlap the first cord 11 on the mixing area 12;

[0038] Step B: Rolling the outer surfaces of the first cord fabric 11, the mixing area 12 and the second cord fabric 13 with outer rubber, and vulcanizing the molded part;

[0039] Step C: After vulcanization, a support ring is assembled inside the mixing zone 12 .

[0040] Preferably, in step A:

[0041] The second fabric 13 has two layers, and the first fabric 11 has three layers.

[0042] An application hollow spring with a composite capsule skin, comprising:

[0043] Base 7;

[0044] The capsule body 1 is sleeved on the base 7;

[0045] A pressure cover 6 is buckled and pressed on the top of the bladder skin body 1;

[0046] The protective tube 5 is arranged on the inner wall of the bladder body 1, and the outer surface of the bladder body 1 is buckled with the protective tube 5 and connected with a positioning ring 4, so as to facilitate the positioning and protection of the middle position of the bladder body 1.

[0047] Preferably, the casing 5 and the positioning ring 4 are both annular, and the length of the positioning ring 4 is greater than that of the casing 5, so that the casing 5 can be installed in place through the setting of the positioning ring 4 to improve the safety of the bladder body 1.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite capsule skin, characterized in that: include: A bladder skin body (1), the bladder skin body (1) comprising a first curtain (11), a mixing zone (12) and a second curtain (13), one end of the second curtain (13) being overlapped with the first curtain (11), and a mixing zone (12) being formed between the first curtain (11) and the second curtain (13), and inner and outer walls of the first curtain (11) and the second curtain (13) are both provided with colloid; Wherein, the cords of the first cord fabric (11) are I-type, and the cords of the second cord fabric (13) are X-type.

2. The composite capsule skin according to claim 1, characterized in that: The number of the first cord fabric (11) is 1-3 layers.

3. The composite capsule skin according to claim 1, characterized in that: The number of the second cord fabric (13) is 2-5 layers.

4. The composite capsule skin according to claim 1, characterized in that: The second cord (13) comprises a first cord (131) and a second cord (132), wherein the first cord (131) and the second cord (132) are interlaced with each other, and an angle formed by the interlacing of the first cord (131) and the second cord (132) is 5°<α<60°.

5. The composite capsule skin according to claim 1, characterized in that: The material of the colloid is: chloroprene rubber.

6. A method for making a composite capsule skin according to any one of claims 1 to 5, characterized in that: The steps include: Step A: Roll the inner rubber into a core rod, roll the lower end to overlap the second cord (13), and leave a mixing area (12) at the height of the second cord (13) at the upper end, and then overlap the first cord (11) on the mixing area (12); Step B: rolling the outer surfaces of the first cord fabric (11), the mixing area (12) and the second cord fabric (13) with outer rubber, and vulcanizing the molded part; Step C: After vulcanization, a support ring is assembled inside the mixing zone (12).

7. The method for making a composite capsule skin according to claim 6, characterized in that: In step A: The second cord fabric (13) has two layers, and the first cord fabric (11) has three layers.

8. The composite bag skin application hollow spring according to any one of claims 1 to 5, characterized in that: include: Base (7); The capsule body (1) is sleeved on the base (7); A pressure cover (6) is buckled and pressed on the top of the bladder skin body (1); The protective tube (5) is arranged on the inner wall of the bladder skin body (1), and the outer surface of the bladder skin body (1) is buckled and connected with the protective tube (5) by a positioning ring (4).

9. The composite bag skin application hollow spring according to claim 8, characterized in that: The protective tube (5) and the positioning ring (4) are both annular, and the length of the positioning ring (4) is greater than the length of the protective tube (5).

Images