CN1194874A - Sports ball and manufacturing method thereof - Google Patents

Abstract

A sports ball is composed of a ball cover and a ball liner, the ball cover is made up of artificial leather including external, middle and internal layers and is made up of leather through sewing together the leather pieces along their edges to form a spherical shape and with air inlet, and the artificial leather is supported and reinforced by said internal layer. The bladder comprises a bladder ball, an outer net layer and an inflation tube in the bladder, the outer net layer is integrally attached to the outer surface of the bladder ball, the inflation tube is mounted on the bladder ball and penetrates through an inflation port of the bladder to extend outwards to the outside of the bladder, the outer net layer is provided with a reinforced extension line which is wound on the outer surface of the bladder ball to completely cover the bladder ball so as to support the bladder ball and resist the impact pressure born when in use.

Description

Sports ball and manufacturing method thereof

The present invention relates to sports balls, more specifically, refers to a durable sports ball suitable for mass production and a manufacturing method thereof, belonging to sports equipment.

As shown in FIGS. 1 and 2 , sports balls such as soccer and volleyball usually include a ball cover 11 and a bladder 12 disposed in the ball cover 11 . The ball skin 11 is made of real leather or artificial leather (such as polyurethane PU or polyvinyl chloride PVC). As shown in Figure 2, the artificial leather includes an outer layer 111, a middle foam layer 112 and a reinforcement And support the inner layer 113 of the foam layer 112 . Ball bladder 12 is then a spherical rubber ball with an inflation tube mounted thereon.

The sheet-like real leather or artificial leather is cut into a plurality of pieces of leather body 110 of predetermined shape, wherein for football, the most common shape of skin body 110 is pentagonal and hexagonal, in other words, the ball skin 110 of football Twelve pentagonal skin pieces 110 and 20 hexagonal skin pieces 110 are stitched together along the edges by hand. In addition, the spherical skin 11 of the volleyball comprises 18 rectangular skins 110 sewn into one body along the edges by hand. The inflatable bladder 12 is placed in the ball skin 11, and the inflation tube 121 on the bladder 12 is extended to the outer surface of the ball skin 11 for positioning, so that the bladder can be inflated. Air is poured into the bladder 12 through the inflation tube 121, and the ball skin 11 is stretched out and reaches a round spherical shape. Therefore, a sports ball full of air has a characteristic of bouncing, the more air is poured into the bladder 12, the stronger the bouncing ability of the sports ball will be.

As mentioned above, the hardness and tolerance of various known sports balls are all determined by the structure of the ball cover 11, and have nothing to do with the soft rubber bladder 12 in the ball cover 11. The structure of the ball cover 11 must be firm enough to moderate all the impact forces formed when playing the ball. Therefore, no matter the leather body 110 is made of real leather or artificial leather, at least two layers of reinforcing inner layers 114 and 115 made of rough cloth will be attached to enhance the support and pressure resistance of the ball skin 11 . Therefore, the roundness and reinforcement strength of sports balls are all determined by the strength of the fabric that reinforces the inner layer. Therefore, it is particularly important to select a good reinforcing inner layer cloth, which will also increase the material cost of the conventional sports ball. The additional reinforcing inner layers 114, 115 are glued layer by layer on the bottom surface of the inner layer 113 of the artificial leather or directly on the bottom surface of the leather material of the uncut leather body 110, thus adding a bonding layer. manufacturing process. Furthermore, the additional reinforcing inner layers 114 , 115 not only increase the thickness of the ball skin 11 , but also increase the hardness of the ball skin 11 . This thick and hard skin body 110 also increases the difficulty of sewing each skin body 110 together by a sewing machine, especially when sewing the corners of the skin body, it is the most vulnerable part of the ball skin 11, so it needs to be properly strengthened. Tough sewing skills, so most of the famous brands of sports balls are handmade. A seamstress must sew each leather body 110 together stitch by stitch, and a skilled seamstress can usually only sew two sports balls in one day. This kind of practice is labor-intensive and time-consuming, and the cost increases a lot. Not to mention another major disadvantage of hand-sewing sports balls is that the seamstress cannot sew each stitch with the same force. Therefore, when the sports ball is inflated, the ball skin 11 will be supported by the bladder 12 and expand outwards, and the parts that are not tightly stitched will affect the roundness of the ball due to uneven force. In addition, the sutures also need to use thicker and tougher high-quality sewing threads to avoid the possibility of broken threads when hitting the ball, especially the weaker parts of the sutures are easier to break.

Because the reinforcing inner layer 114,115 is made of cloth, the main support pressure position of the sports ball is on the connection surface of the real leather or artificial leather of the additional reinforcing inner layer 114,115 and the ball skin 11, but The compressive capacity and endurance of the cloth are limited, and the additional reinforcing inner layers 114, 115 are not strong enough to withstand the pressure generated during inflation and playing. Therefore, the reinforcing inner layers 114, 115 will be cracked slowly during use, resulting in damage to the sports ball. And because the football, volleyball or other balls that are made by above-mentioned conventional ball skin 11 are too thick too hard, often make the player's head or the pain when the hand is hit during use, just do not use for children or beginners. Having said that, it has to be improved.

The main purpose of the present invention is to provide a sports ball whose skin is essentially supported by a reinforced bladder without attaching any reinforcing inner layer to the bottom surface of the skin, thereby greatly reducing the material and cost of the sports ball. manufacturing cost. The part of the sports ball that is primarily used to support pressure is its reinforced bladder. Its bladder has better flexibility and impact resistance. Therefore, the sports ball has better durability and a softer skin. The sports ball has a better roundness, and even if the inflation of the ball exceeds 15% to 20% of the standard air pressure, the roundness can still be maintained. The sports ball is made of genuine leather, in which the supporting pressure and impact resistance part lies in the reinforced bladder, not in the ball skin itself, so the skins of the ball skin can be made of thinner materials Manufactured to reduce costs, and a soft sponge cushion can be attached to the inner surface of the leather body to increase its softness and strength of the ball skin.

Another object of the present invention is to provide a manufacturing method of a sports ball, which enables the ball cover to be sewn by a machine, which is suitable for mass production and ensures a high quality level.

A sports ball and its manufacturing method of the present invention include a ball cover and a bladder. The ball skin has an air-filling port on it, and the ball skin is stitched together along its edges by a plurality of skin pieces by machine to form a spherical shape. The bladder is located inside the ball skin, which includes: a rubber bladder ball, an outer mesh layer, which is integrally formed and attached to the predetermined position on the outer surface of the bladder ball, and an inflatable tube, which is installed on the The bladder is on the ball and passes through the inflation port of the ball skin and extends outward to the surface of the ball skin for filling air. The outer mesh layer includes at least one reinforced extension line, which is overlapped and wound on the outer surface of the bladder ball in an average circle to form an outer mesh layer, which completely covers the ball bearing ball for supporting the bladder ball to resist the movement of the sports ball. The impact pressure withstood during use. The bladder includes a rubber pad with the same weight as the inflation tube, which is integrally fixed at the bottom directly opposite the inflation tube of the bladder. The bladder ball, the rubber pad and the reinforced extension wire covered thereon are integrated in a mold for heat treatment, so that the reinforced extension wire is hardened so that the outer mesh layer is permanently connected with the outer surface of the bladder ball combined into one.

Wherein, each skin body of the ball cover is made of artificial leather into a predetermined shape. The artificial leather has an outer layer, an inner layer and a middle layer between the outer layer and the inner layer. Supported and reinforced by the inner layer. The artificial leather can be made of polyurethane (PU) or polyvinyl chloride (PVC) or other artificial leather materials.

Each sheet of the ball cover can also be made of real leather, and a cushion layer is attached under the bottom surface of the ball cover to provide the corresponding softness and thickness of the cover.

The manufacturing method of the sports ball of the present invention comprises the following processes:

(1) Inflate a rubber bladder with an inflation tube.

(2) Apply adhesive to at least one reinforced extension such as nylon thread.

(3) Wrap the nylon thread evenly round and round on the outer surface of the rubber bladder ball to form an outer mesh layer made of nylon thread and wrap it integrally on the bladder ball to form a reinforced bladder.

(4) The bladder is placed in a mold and heated until the outer mesh layer is permanently and firmly integrated with the outer surface of the bladder ball.

(5) Cutting the entire cover material into a predetermined number of sheet bodies with a predetermined shape. The material of the ball cover can be leather, or artificial leather made of polyurethane (PU) and polyvinyl chloride (PVC). For football, a total of 12 pentagonal skins and 20 pieces are required. Hexagonal skin sheet body. For volleyball, 18 rectangular skins of two different sizes are needed.

(6) Sew each skin body with a sewing machine along the edge to form a ball skin, which has an inflation port on it, wherein a part of the skin body must be left unstitched to form an inlet.

(7) Heat the ball skin, and turn the ball skin to make the ball face outward.

(8) Put the reinforced bladder into the ball skin through the entrance.

(9) Align the inflation tube of the bladder with the inflation hole of the ball skin and stick them tightly.

(10) Inflate the bladder to its original inflated state to ensure that the inflated bladder can effectively support the ball skin.

(11) The entrance of the ball skin is artificially sewed to form a sports ball.

(12) Place the sports ball in a shape-controlled mold and inflate it completely up to or even above the standard air pressure to ensure permanent molding of the skin and bladder.

The invention has the advantages that: because the bladder has an outer mesh layer to make it a reinforced bladder, the sports ball can bear great pressure and impact force, is durable and has a long service life. Because the ball skin of the present invention has no additional reinforcing inner layer and has good flexibility, it can be sewn together by a sewing machine with a thinner sewing thread, which reduces the cost, is easy to process and manufacture, and improves production efficiency. Due to the softness of the ball skin, the sports ball made has good flexibility and impact resistance, which can greatly reduce the pain of hitting the player's head or hand, especially for children and beginners. , better suited to their needs. The sports ball of the present invention has better roundness, that is, the inflation pressure of the reinforced bladder exceeds the standard air pressure by 15% to 20%, and the roundness is still maintained, so it is very popular among athletes. If the present invention is made of real leather, since there is a reinforced bladder, it can be made with a thinner leather sheet, which reduces the cost, and can be made by attaching an additional soft sponge cushion layer on the inner surface of the leather sheet. , increase the softness of the ball skin and strengthen the quality of the real leather ball skin.

The present invention has the following drawings: Fig. 1 is a partially cut-away three-dimensional schematic diagram of a conventional sports ball. Fig. 2 is a partially enlarged sectional plan view of a conventional sports ball. Fig. 3A is a partially cut-away perspective view of a sports ball (soccer) according to a first embodiment of the present invention. Fig. 3B is a partially cut-away perspective view of the sports ball (volleyball) of the above-mentioned first embodiment of the present invention. Fig. 4 is a three-dimensional schematic view of the reinforced bladder of the sports ball of the above-mentioned first embodiment of the present invention. Fig. 5 is a partially enlarged sectional plan view of the sports ball of the above-mentioned first embodiment of the present invention. Fig. 6 is a partially enlarged sectional plan view of a genuine leather sports ball according to a second embodiment of the present invention. 7A-I are schematic flow charts of the manufacturing process of the sports ball of the present invention.

The numbers in the figure are: 11, ball skin 110, skin sheet body 111, outer layer 112, middle foam layer 113, inner layer 114, reinforced inner layer 115, reinforced inner layer 12, bladder 121, inflatable tube 20, ball Leather 20', leather ball 21, outer layer 22, middle layer 23, inner layer 24, leather body 24', leather body 25, suture 26, air hole 27', cushion layer 28, entrance 30, bladder 31. Ball bladder 32. Inflatable tube 33. Outer mesh layer 331. Reinforced extension cord 34. Rubber pad

Hereby give embodiment and cooperate accompanying drawing to describe in detail as follows:

Please refer to Fig. 3A, B and Fig. 4, which show a sports ball according to a first embodiment of the present invention. The sports ball of the present invention, such as the soccer ball shown in FIG. 3A or the volleyball shown in FIG. 3B , includes a ball cover 20 and a reinforced bladder 30 disposed inside the ball cover 20 . The ball cover 20 must be made of genuine leather or artificial leather such as polyurethane (PU) or polyvinyl chloride (PVC). As shown in FIG. 5 , the artificial leather includes an outer layer 21 , a middle layer 22 and an inner layer 23 , and the inner layer 23 is used to support and strengthen the middle layer 22 .

The genuine leather or artificial leather is cut from the whole leather material into many leather sheet bodies 24 with predetermined shapes. For soccer balls, the most common shapes of the sheet body 24 are pentagonal and hexagonal. In other words, the ball skin 20 of the football is to sew 12 pentagonal skin sheets 24 and 20 hexagonal skin sheets 24 together along their edges with sutures 25 . And the spherical ball skin 20 of volleyball then comprises 18 rectangular skin sheet bodies 24 and is mutually sewed together by seam 25 along the edge. The ball cover 20 is provided with an air-filling hole 26 thereon.

The inflatable bladder 30, placed inside the cover 20, comprises a rubber bladder 31 and an inflation tube 32 on the bladder 31, the inflation tube 32 extending through the ball The inflation port 26 of the skin 20 is glued on the ball skin 20, so that the bladder ball 31 can be inflated thereby. According to the present invention, the bladder 30 includes an outer mesh layer 33 attached to the outer surface of the bladder ball 31 . As shown in FIG. 4 , the entire bladder ball 31 is completely covered by the outer mesh layer 33 . The outer mesh layer 33 includes at least one reinforcing extension 331 such as nylon thread (usually a plurality of reinforcing threads 331 can be used) which is evenly wound around the outer surface of the bladder ball 31, and the reinforcing threads 331 are connected to each other. The outer mesh layer 33 is formed overlappingly.

In order to make the reinforced extension wire 331 adhere permanently to the outer surface of the bladder ball 31, before being wound around the bladder ball 31, the surface of the reinforced extension wire 331 is covered with a layer of glue so that it can be firmly adhered to the outer surface of the bladder ball 31. Stick on the outer surface of bladder ball 31. The bladder ball 31 bonded with the reinforced extension wire 331 is heat-treated by being integrally placed in a mold, so that the adhered reinforced extension wire 331 hardens into the outer mesh layer 33 and can be permanently bonded to the rubber bladder ball. 31 combined into one.

Due to the existence of the inflation tube 32 on the bladder 30, the sports ball may lose its balance when it is in the air, that is, when the sports ball always falls down, the end with the inflation tube 32 will also go down. In order to ensure that the sports ball has a better balance, as shown in Figure 4, a rubber pad 34 with the same weight as the inflation tube 32 is integrally bonded to the bladder 30 just opposite to the inflation tube 32. bottom, to balance the weight of the bladder 30 symmetrically.

Usually like a fishnet structure or a spider web structure, the web structure is one of the most powerful and robust force-bearing structures that can support a high degree of pressure and withstand a high degree of impact. Therefore, the setting of the outer mesh layer 33 can reinforce the soft and weak rubber bladder ball 31 . In other words, the bladder 30 of the present invention is fully reinforced by the outer mesh layer 33 and has better flexibility and impact resistance.

When air is poured into the bladder 30 through the inflation tube 32, the air will fill the bladder 30 and stretch the skin 20, as shown in Figure 3, according to the present invention, the reinforced bladder 30 can support and keep the skin 20 at a predetermined The roundness is maintained even if the bladder 30 is over-inflated to 15% to 20% above the base air pressure of the sports ball. In addition, the supporting force of the bladder 30 on the ball cover 20 is evenly distributed, so that the sports ball can have the average roundness desired by the players.

If the conventional sports ball is made of genuine leather, its genuine leather sheets are thick and hard, so it must be sewn by hand, which is difficult to process and manufacture. As shown in Figure 6, it is the second embodiment of the present invention. . The genuine leather sports ball also includes a reinforced bladder 30 and a genuine leather ball cover 20' as in the above-mentioned first embodiment, and the genuine leather ball cover 20' is made of a plurality of genuine leather sheets 24'. Since the reinforced bladder 30 of the present invention has the characteristic of being able to resist pressure and impact force, thinner materials can be used for the leather sheet body ′, so that the leather sheet body 24 ′ can also be stitched with a sewing machine. The leather sheet body 24' of each leather ball 20' further comprises a cushion layer 27' that is bonded under the bottom surface of the leather sheet body 24', and the cushion layer 27' can be made of foam (EVA), polyimide polyester (PU) or polyvinyl chloride (PVC), thereby increasing the thickness and softness of the leather sheet body 24' of the leather ball 20', thereby achieving the purpose of the present invention.

The sports ball system of the present invention is made by a special manufacturing process, as shown in Figure 7, the manufacturing process includes the following procedures:

(1) As shown in Figure 7A, the rubber bladder ball 31 with an inflation tube 32 is inflated;

(2) Coating a layer of adhesive on the reinforced extension wire 331 (such as nylon wire, etc.);

(3) Overlap and wind the reinforced extension wire 331 on the outer surface of the rubber bladder ball 31 on average, as shown in FIG. 7B , until the surface of the bladder ball 31 is completely covered by the reinforced extension wire 331 An outer mesh layer 33 is formed to form a reinforced bladder 30, as shown in FIG. 7C. Then, a rubber pad with the same weight as the inflation tube 32 is integrally bonded on the bottom of the air bladder 30 directly opposite the inflation tube 32, so as to balance the weight of the bladder 30 symmetrically ;

(4) Place the bladder 30 in a mold M and heat until the outer mesh layer 33 is permanently and firmly integrated with the outer surface of the bladder ball 31;

(5) Cut the entire width of the ball cover material into a predetermined number and have a predetermined shape of the skin sheet body 24, as shown in Figure 7D, wherein the manufacturing material of the ball cover 20 can be real leather, or polyurethane ( PU) and polyvinyl chloride (PVC) made of artificial leather. Wherein, the sports ball of football class has 12 pieces of pentagonal skin body 24 and 20 pieces of hexagonal skin body 24, and the sports ball of volleyball then needs 18 pieces of rectangular skin body 24 of two kinds of different sizes;

(6) Each skin body 24 is sewed together along its edge with a sewing machine to form a ball skin 20, with an inflation port 26 on it, wherein the skin body 24 of a predetermined part is not stitched to provide an entrance 28, as shown in Figure 7E and Figure 7F;

(7) Heat the ball 20, and straighten the ball 20 so that the ball faces outward, as shown in Figure 7G;

(8) Put the reinforcing bladder 30 into the ball skin 20 through the ball skin inlet 28, as shown in FIG. 7H ;

(9) align the inflation tube 32 of the bladder 30 with the inflation hole 26 of the ball skin 20 and stick them tightly together, as shown in FIG. 7H ;

(10) Partially inflate the bladder 30 to ensure that the inflated bladder 30 supports the ball skin 20 effectively, as shown in FIG. 7H ;

(11) The entrance 28 of the ball skin 20 is artificially sewed, as shown in Figure 7I, to form a sports ball;

(12) Place the sports ball in a shape-controlling mold M' and fill it with air until or even more than the standard air pressure, to ensure that the ball skin 20 and the bladder 30 are permanently formed, as shown in Figure 7I.

As mentioned above, when the inflatable tube 32 on the bladder 30 is in the air, the sports ball may lose its balance, that is, when the sports ball always falls downwards, the end of the inflated tube 32 is also downwards, The following procedures can be carried out immediately after the above procedure to ensure a better balance of the sports ball:

A piece of rubber pad having the same weight as the inflation tube 32 is integrally bonded to a bottom of the bladder 30 , which is just opposite to the inflation tube 32 , so as to balance the weight of the bladder 30 symmetrically.

Claims (8)

1, a kind of sport ball and manufacture method thereof, it is characterized in that: it comprises

One has the covering of an inflation inlet, and this covering comprises a plurality of skin graft bodies, and each skin graft body has a reservation shape respectively and the mat sewing machine is stitched together each skin graft body mutually to form the ball shape along its edge;

One bladders is to place within this covering, and this bladders comprises the bladders ball of a rubber system, one outer plexiform layer and a gas tube, this outer plexiform layer is coated on the outer surface of this bladders ball and is integral, and this inflation piping is installed on this bladders, and the inflation inlet that passes covering extends out on the surface of covering; This outer plexiform layer comprises at least one reinforcement extended line, be on the overlapping round and round fifty-fifty outer surface that is wrapped in this bladders ball to form outer plexiform layer, the bladders ball is coated fully.This bladders comprises a rubber blanket that has with this gas tube identical weight, is the bottom that cements in this bladders gas tube right opposite of one.This bladders ball and this rubber blanket and the reinforcement prolongation linear system one that coats thereon place a mould to give heat treated, make this reinforcement extended line sclerosis so that this outer plexiform layer for good and all is combined into one with this bladders outer surface of ball.

2, a kind of sport ball and the manufacture method thereof according to claim 1, it is characterized in that: wherein the skin graft system is made by dermatine, and this dermatine comprises a skin, an internal layer and a middle level, and series of strata one is located between skin and the internal layer in this.

3, a kind of sport ball and the manufacture method thereof according to claim 1, it is characterized in that: wherein the skin graft system is made by the corium leather, and cementation has a bed course on this corium skin graft body bottom surface.

4, a kind of sport ball and the manufacture method thereof according to claim 2, it is characterized in that: wherein the skin graft system is made by poly-imines fat (PU).

5, a kind of sport ball and the manufacture method thereof according to claim 2, it is characterized in that: wherein the skin graft system is made by polyvinyl chloride (PVC).

6, a kind of sport ball and the manufacture method thereof according to claim 1, it is characterized in that: wherein strengthening extended line is nylon wire.

7, a kind of sport ball and manufacture method thereof is characterized in that: its manufacture method comprises following program

(1) the rubber system bladders ball that will have a gas tube is inflated;

(2) strengthening the glutinous agent of coating one deck on the extended line;

(3) will strengthen on the overlapping round and round fifty-fifty outer surface that is wrapped in this rubber bladder ball of extended line, be reinforced extended line up to this bladders ball surface and be overmolding to an outer plexiform layer fully, strengthen bladders to constitute one, have on one of the right opposite that is positioned at this gas tube that is cemented at this bladders with a rubber blanket one of this gas tube identical weight bottom one then, with the weight of this bladders of balance relatively symmetrically;

(4) bladders is placed in the mould heat, be combined into one with the outer surface of this bladders ball securely up to this outer plexiform layer is permanent;

(5) the covering material of view picture is cut apart with a knife or scissors into predetermined number and have the skin graft body of reservation shape;

(6) each skin graft body is united by a seam along its edge mutually with a sewing machine form a covering, have an inflation inlet thereon, wherein predetermined skin graft body partly will not be sewed up earlier so that an inlet to be provided;

(7) right with covering heating, and with covering and to make sphere outside;

(8) will strengthen bladders inserts in this covering via the covering inlet;

(9) gas tube of this bladders is aligned the air-filled pore of covering and in addition glutinous mutually tight;

(10) this bladders is partly inflated to guarantee that the bladders that has added gas supports outstanding covering effectively;

(11) with the inlet manual suture of this covering;

(12) this sport ball is placed in the control shape mould and fill fully gas up to or even more than the air pressure of standard, to guarantee covering and bladders permanent shaped.

8, sport ball and the manufacture method thereof according to claim 7, it is characterized in that: wherein this reinforcement extended line is a nylon wire.

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