CN106183666B - A kind of tire cushion belt and its manufacturing method - Google Patents

Abstract

The invention discloses a tire cushion belt and a manufacturing method thereof, and belongs to the technical field of tire manufacturing. It includes metal gasket and film, the gasket mouth hole has been seted up on the metal gasket, characterized by: the metal gasket is flaky, and it has one end to upwarp at least, the metal gasket buries in the film and quilt the film parcel, be provided with a plurality of sticky holes that run through its thickness on the metal gasket, still be provided with the location V groove that is the V-arrangement that a plurality of location were used on the metal gasket, the lower part protrusion in the lower surface of metal gasket in the lower surface in the V-arrangement that is used of location the upwarp end of metal gasket is seted up a plurality of bending grooves that run through its width direction. According to the invention, the metal gasket is embedded and wrapped in the rubber sheet, and the metal gasket has good rigidity and plays a good role in protection, so that the tire rim strip cannot be extruded from the valve slot of the rim under high air pressure to cause damage, and the tire rim strip can effectively protect the valve position of the tire tube.

Description

A kind of tire cushion belt and its manufacturing method

technical field

The invention relates to a tire cushion belt, which belongs to the technical field of tire manufacturing. The invention also relates to a method for the manufacture of the tire cushion.

Background technique

In the prior art, in order to protect the valve position of the tire, a tire pad is generally provided at the valve position of the inner tube of the tire. The commonly used pad is generally thickened at the mouth hole of the pad, or placed on the mouth of the pad. The hole is reinforced with nylon canvas, or an external metal gasket (commonly known as a guard plate) is installed on the mouth hole of the pad.

If it is thickened at the nozzle hole of the gasket, it is difficult to grasp the degree of thickening. If the thickness of the nozzle hole is small, it is easy to be squeezed out from the valve groove of the rim after inflation and damaged; the thickness of the nozzle hole of the gasket is large, and local consumption A large amount of glue will affect the uniformity and dynamic balance of the tire. Moreover, when thickening treatment is carried out on the nozzle hole of the gasket, the gasket rubber will be squeezed into the valve groove of the rim when the tire pressure is high at the nozzle hole of the gasket. The position gap is damaged, causing the inner tube to be damaged and leak air. However, if the nylon canvas is attached to the mouth hole of the pad, it will be easily cracked and damaged after aging due to the low strength of the nylon canvas, and the production of the pad is difficult and the appearance is poor. Installing an external metal gasket at the mouth hole of the pad belt also has the hidden danger that the metal gasket may easily cut the tire or the pad belt, and the metal gasket is easy to deviate and fall off, thereby affecting the use of the pad belt. In addition, the metal gasket Although it can well protect the pad from damage, but because the hole height of the rigid gasket is larger than the thickness of the pad, it will directly contact with the inner tube valve round pad, and cause stress interference with the inner tube valve, so that the external stress is concentrated on the inner tube. On the valve, the rubber pad, and the tire body, the possibility of damage to the inner tube valve, the rubber pad, and the tire body has been increased, and the installation of an external metal gasket at the mouth hole position of the pad has also increased the production labor intensity of the pad.

Contents of the invention

Aiming at the above-mentioned problems in the prior art, the present invention provides a tire cushion strip that can effectively protect the valve part of the tire inner tube.

The present invention is achieved through the following technical solutions: a tire gasket, including a metal gasket and a film, the metal gasket is provided with a gasket mouth hole, and the feature is: the metal gasket is sheet-shaped, It has at least one end upturned, the metal gasket is embedded in the film and wrapped by the film, the metal gasket is provided with a number of glue holes through its thickness, and the metal gasket is also A plurality of V-shaped positioning V-grooves for positioning are provided, the lower part of the positioning V-grooves protrudes from the lower surface of the metal gasket, and a plurality of holes are formed on the upturned end of the metal gasket through its width direction. the bending groove.

In the present invention, the metal gasket is directly embedded and wrapped in the film, which can play a good protective role, so that the tire gasket will not be damaged due to extrusion from the valve groove of the rim under high pressure. Among them, the positioning V-groove on the metal gasket can play the role of positioning, through which the position of the metal gasket from the bottom of the inner circumference of the tire gasket can be determined, so that the depth of each part of the metal gasket embedded in the film is consistent. In addition, Positioning the V-groove also plays a role in improving the bonding between the metal gasket and the film. The adhesive holes on the metal gasket can improve the combination of the metal gasket and the film, and ensure the firm combination of the metal gasket and the film. The bending grooves on the metal gasket can make the rigid metal gasket easy to bend, so that the metal gasket can be bent and deformed more easily as the shape of the gasket changes.

Further, in order to prevent the metal gasket from cutting the film, the corner ends of the metal gasket are all rounded into arcs. Preferably, the radius of the arc is 5-15mm.

Further, the shape of the metal gasket is rectangular, diamond or trapezoidal, the thickness of the metal gasket is 0.5-1.0mm, and the length of the upturned part of the metal gasket is 20-40mm.

Further, in order to ensure the positioning effect and the combination of the metal gasket and the film, the positioning V-grooves are arranged in two rows along the length direction of the metal gasket, both of which are located outside the mouth hole of the gasket.

Preferably, the positioning V-groove has a width of 2-5 mm, a length of 5-10 mm, and a protruding height of 1-3 mm.

In order to ensure the bending effect of the metal gasket, the bending groove is a V-shaped groove with a groove width of 0.5-1 mm and a groove depth of 0.3-0.6 mm.

In the present invention, besides one end of the metal gasket can be designed to be upturned, it can also be designed so that both ends of the metal gasket are upturned. When the design with one end upturned is adopted, the left and right directions of the valve must be installed according to the direction during the production of the tire pad and tire assembly, otherwise the protection effect will not be achieved. When the design with both ends upturned is adopted, the left and right direction of the valve can be installed arbitrarily during the production of tire pads and tire assembly.

In order to facilitate positioning during production, the mouth hole of the gasket is formed by stamping, and its shape is polygonal or round or round with missing edges. The upper part of the mouth hole of the gasket is flush with the upper surface of the metal gasket or the upper part has a Straight sides or top with cuffs.

The present invention also provides a kind of manufacturing method of above-mentioned tire cushion belt, and the technical scheme that it adopts is: the manufacture method of tire cushion belt, comprises the following steps:

(1) First put the gasket mouth hole of the metal gasket on the pin of the tire pad mold, and keep the length direction of the metal gasket perpendicular to the circumferential direction of the mould;

(2) According to the vulcanization process of the tire pad, glue, mold, and vulcanize are carried out, so that the metal gasket is buried in the vulcanized film;

(3) After the vulcanization is completed, take out the tire pad, trim the excess rubber edge, and use the punching device to punch out the excess glue at the mouth hole of the gasket.

The beneficial effects of the present invention are: the present invention embeds and wraps the metal gasket in the film, and the metal gasket has good rigidity and plays a good protective role, so that the tire gasket will not fall from the valve of the rim under high pressure. Extrusion in the groove causes damage, which can effectively protect the valve part of the tire inner tube; because the metal gasket of the present invention is provided with a positioning V groove and a bending groove, the metal gasket is not easy to deviate, fall off, and cut the outer tire or pad. belt; the metal gasket is provided with glue holes, which can effectively ensure that the metal gasket and the film are firmly bonded; since the metal gasket is directly built into the tire gasket belt, the metal gasket does not need to be installed separately, reducing production labor Strength; In addition, because the metal gasket is built into the tire pad, the metal gasket does not contact the inner tube valve and its components, and the metal gasket and the valve do not produce stress interference, which reduces the pressure caused by the external stress of the inner tube valve. The possibility of damage to the mouth, rubber pad and carcass.

Description of drawings

Fig. 1 is the sectional schematic diagram of the tire cushion belt in the embodiment 1 of the present invention;

Fig. 2 is a schematic plan view of the metal gasket in Fig. 1;

Fig. 3 is A-A' schematic diagram among Fig. 2;

Fig. 4 is an enlarged schematic diagram of part C in Fig. 2;

Fig. 5 is the M-M ' schematic diagram among Fig. 4;

Fig. 6 is a schematic cross-sectional view of the first structure of the gasket mouth hole in the present invention;

Fig. 7 is the schematic cross-sectional view of the second structure of the nozzle hole of the gasket in the present invention;

Fig. 8 is a schematic cross-sectional view of a third structure of the nozzle hole of the gasket in the present invention;

Fig. 9 is a schematic cross-sectional view of the tire cushion belt in Embodiment 2 of the present invention;

Fig. 10 is a schematic plan view of the metal gasket in Fig. 9;

Fig. 11 is B-B' schematic diagram among Fig. 10;

Among the figure, 100, tire cushion belt, 1, metal gasket, 11, gasket mouth hole, 12, positioning V groove, 13, glue hole, 14, bending groove, 15, circular arc, 2, film.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing by non-limiting embodiment:

Example 1

As shown in the accompanying drawings 1-9, a tire gasket 100 includes a metal gasket 1 and a film 2, the metal gasket 1 is provided with a gasket mouth hole 11, and the metal gasket 1 is a sheet shape, one end of which is upturned, the metal gasket 1 is embedded in the film 2 and wrapped by the film 2, the metal gasket 1 is provided with a number of adhesive holes 13 penetrating its thickness, and the metal gasket 1 is also provided with A plurality of V-shaped positioning V-grooves 12 for positioning. The lower part of the positioning V-grooves 12 protrudes from the lower surface of the metal gasket 1. On the upturned end of the metal gasket 1, there are a plurality of holes running through its width direction. The bending groove 14. During the production of the tire cushion belt and tire assembly in this embodiment, the left and right directions of the valve must be installed according to the direction, otherwise the tire cushion belt will not have a protective effect.

The metal gasket 1 is made of brass, brass-plated steel sheet or galvanized steel sheet. The shape of the metal gasket 1 can be rectangular, diamond-shaped or trapezoidal. The thickness of the metal gasket 1 is preferably 0.5-1.0mm. The length of the upturned part of 1 is preferably 20-40mm. In this embodiment, the metal gasket 1 is rectangular with a width of 30-40mm. In order to prevent the metal gasket 1 from cutting the film 2, the four corners of the metal gasket 1 are all rounded to form an arc 15, and the radius of the arc is preferably: 5-15mm.

The glue hole 13 on the metal gasket 1 can be in any shape such as a circle, an oval, a square, a rhombus, or a pentagon, and the glue hole 13 can improve the bonding of the metal gasket 1 and the film 2 .

The cross-section of the positioning V-groove 12 provided on the metal gasket 1 is V-shaped. The width of the positioning V-groove 12 is preferably 2-5 mm, the length is preferably 5-10 mm, and the height of the protrusion is preferably 1-3 mm. The positioning V-groove 12 can be arranged at any position of the metal gasket, but it should be uniformly arranged, and its quantity can also be determined according to needs, and multiple can be provided. Preferably, the positioning V-groove 12 is arranged along the length direction of the metal gasket 1 as There are two rows, each row includes a plurality, and both rows are located outside the nozzle hole 11 of the gasket. The positioning V-groove 12 determines the position of the metal gasket 1 from the bottom of the inner circumference of the tire gasket 100, so that the depth of each part of the metal gasket 1 embedded in the film 2 is consistent, and at the same time, it also improves the distance between the metal gasket 1 and the film 2. Combined role.

The bending groove 14 is located at the joining position between the cushion belt 100 and the tire rim. The bending groove 14 is a V-shaped groove, the groove width is preferably 0.5-1 mm, and the groove depth is preferably 0.3-0.6 mm. The bending groove 14 can make the rigid metal spacer 1 bend easily, and when the spacer 100 is used, the metal spacer 1 can be bent and deformed more easily as the shape of the tire spacer changes. The bending grooves 14 in the present invention can be arranged in multiples at intervals of 3-5 mm, and the cross-sectional shape of the bending grooves 14 can also be a semicircle or other shapes.

The nozzle hole 11 of the gasket is formed by stamping, and its shape can be polygonal or circular or circular with missing edges, etc., so as to facilitate positioning during production. The upper part of the gasket nozzle hole 11 can be flush with the upper surface of the metal gasket 1 as a flat hole, as shown in Figure 6, or the upper part can be a straight hole with straight edges, as shown in Figure 7, or the upper part can have a straight edge. The flanging is a flanging hole, as shown in Figure 8.

The manufacture method of tire cushion belt 100 of the present invention is as follows:

Step 1: Put the gasket nozzle hole 11 of the metal gasket 1 on the pin (not shown) of the tire gasket mold, and keep the length direction of the metal gasket 1 perpendicular to the circumferential direction of the mold;

The second step: the tire belt 100 is glued, molded and vulcanized according to the vulcanization process of the existing tire cushion belt, so that the metal gasket 1 is buried in the vulcanized film;

Step 3: After the vulcanization is finished, take out the tire pad, trim the excess rubber edge, and use a punching device to punch out the excess glue at the nozzle hole 11 of the gasket, thereby making a formed tire pad.

Other parts in this embodiment adopt known technologies, which will not be repeated here.

Example 2

As shown in FIGS. 6-11 , this embodiment is basically the same as Embodiment 1, except that both ends of the metal gasket 1 in this embodiment are upturned.

Other parts of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

Claims (7)

1. including metal gasket (1) and film (2), gasket nozzle aperture is offered on the metal gasket (1) for a kind of tire flap (11), it is characterized in that：The metal gasket (1) is sheet, and at least one end upwarps, and the metal gasket (1) is embedded in institute It states in film (2) and is wrapped up by the film (2), several glue holes through its thickness are provided on the metal gasket (1) (13), the V-shaped positioning V slots (12) of multiple positioning, the positioning V slots (12) are additionally provided on the metal gasket (1) Lower part protrude from the lower surface of metal gasket (1), the metal gasket (1) upwarp end offer it is multiple through its width The bending slot (14) in direction；The width of the positioning V slots (12) is 2-5mm, and length 5-10mm, the height of protrusion is 1-3mm； The length of the upturned portion of the metal gasket (1) is 20-40mm；The bending slot (14) is V-shaped groove.

2. tire flap according to claim 1, it is characterized in that：The equal rounding in angle end of the metal gasket (1), which is handled, is Circular arc.

3. tire flap according to claim 2, it is characterized in that：The radius of the circular arc is：5-15mm.

4. tire flap according to claim 1, it is characterized in that：The V slots (12) that position are along the metal gasket (1) Length direction is set as two rows of, is respectively positioned on the outside of gasket nozzle aperture (11).

5. according to the tire flap described in claims 1 or 2 or 3 or 4, it is characterized in that：The groove width of the bending slot (14) is 0.5-1mm, groove depth 0.3-0.6mm.

6. according to the tire flap described in claims 1 or 2 or 3 or 4, it is characterized in that：On the both ends of the metal gasket (1) It sticks up.

7. according to the tire flap described in claims 1 or 2 or 3 or 4, it is characterized in that：The gasket nozzle aperture (11) is strikes out Type, shape is round for polygon or round or scarce side, the top of the gasket nozzle aperture (11) and the upper surface of metal gasket (1) Concordant or top carries flange with straight flange or top.