CN111973959A - Manufacturing method of ball, TPU leather, vulcanizing mold and machine-pasted ball - Google Patents

Abstract

The invention provides a ball manufacturing method, TPU leather material, a vulcanized mold and a machine-mounted ball, relates to the technical field of ball manufacturing, and mainly solves the problem that in the prior art ball manufacturing method, the vulcanization link will damage PU or PVC plastics Technical issues with the feel of leather surfaces. The ball making method of the invention at least includes the following steps: cutting the TPU leather into the shape of a ball skin patch to make the TPU ball skin patch. Place the TPU ball skin patch on the patch mold, then place the middle tire in the mold, and pressurize the middle tire to make the TPU ball skin patch stick to the middle tire; the TPU ball skin patch will be pasted The middle tire is placed in a vulcanized mold with a texture to reshape the TPU ball skin pasted on the middle tire through the vulcanized mold with a texture; take out the product, cool down, and trim the surface. The method of sticking the ball skin can destroy the hand feeling on the surface of the ball skin, and can form textures to enhance the hand feeling on the surface of the ball skin during vulcanization, simplifying the production process and shortening the production cycle.

Description

Method for making ball, TPU leather material, vulcanized mold and machine-applied ball

technical field

The invention relates to the technical field of leather balls, in particular to a method for making a ball, a TPU leather material, a vulcanized mold and a machine-mounted ball.

Background technique

The current process of machine sticking basketballs is to apply oily glue on the vulcanized basketball middle tires, and then cut the PU or PVC leather into eight basketball patches. Further, the basketball patch is filled in the mold, and the cut basketball patch has been positioned by the mold. The middle tire with the basketball patch is further put into the mold, and the upper and lower molds are closed. Then further pressurize the middle tire in the vulcanization mold, so that the middle tire is squeezed from the inside out to stick the basketball skin patch on the middle tire. The glued basketball is put into the vulcanization mold, and after heating and pressure vulcanization, the basketball piece can be glued to the middle tire.

The current machine-mounted basketballs have at least the following shortcomings in the production process:

Now the basketballs on the market are made of PU or PVC, which cannot adapt to the high temperature of vulcanization. Specifically, during the vulcanization process of the intermediate tire with the basketball patch, it needs to be heated to 140°C and kept for more than 5 minutes to complete the vulcanization. Due to the high vulcanization temperature, the pores or gaps on the surface of PU or PVC plastic leather originally used to increase the feel and softness will be destroyed, which in turn makes the feel and hardness of PU or PVC plastic leather. destroy.

SUMMARY OF THE INVENTION

One of the purposes of the present invention is to propose a method for making a ball, which solves the technical problem that the vulcanization link in the prior art ball making method will destroy the surface feel of PU or PVC plastic leather. In the preferred embodiment of the present invention, many beneficial effects can be achieved, which are described in detail below.

For achieving the above object, the invention provides the following technical solutions:

The manufacturing method of the ball of the present invention at least comprises the following steps:

S1. Ball skin patch molding, cutting the TPU leather into the shape of the spherical skin patch to make the TPU spherical skin patch.

S2. Paste the TPU ball skin patch, place the TPU ball skin patch on the patch mold, then place the middle tire in the mold, and pressurize the middle tire, so that the TPU ball skin patch is pasted on the middle tire. ;

S3, vulcanization molding, place the middle tire with the TPU ball skin patch in the vulcanization mold with texture, so as to reshape the TPU ball skin pasted on the middle tire through the vulcanization mold with texture;

S4, cooling and trimming, take out the product, cool down, and trim the surface.

In a further preferred or optional technical solution of the present invention: S11, trimming the TPU ball skin patch cut into the shape of a basketball sheet to reduce the edge thickness of the TPU ball skin patch.

In a further preferred or optional technical solution of the present invention, the vulcanization temperature is 160°C.

In a further preferred or optional technical solution of the present invention, the TPU spherical skin used in the above preferred technical solution at least includes an outer skin layer and a buffer layer, the outer skin layer and the buffer layer are bonded to each other, and the outer skin layer is made of TPU material.

Further preferably, when the TPU leather material is used in the above-mentioned method for making the ball, the outer skin layer is located on the side away from the middle tire.

A TPU leather material includes an outer skin layer and a buffer layer, the outer skin layer and the buffer layer are bonded to each other, the outer skin layer is made of TPU material, and the outer skin layer is located on the side away from the middle tire.

In a further preferred or optional technical solution of the present invention, the buffer layer in the TPU leather is made of any one of TPU foam material, PU, PVC, EVA and TPE.

In a further preferred or optional technical solution of the present invention, the TPU leather material further includes a reinforcement layer, and the reinforcement layer and the buffer layer are pasted on the side away from the outer skin layer.

In a further preferred or optional technical solution of the present invention, the reinforcing layer in the TPU leather material is a non-woven fabric and/or a non-woven fabric.

A vulcanizing mold is provided with a forming groove on the inner wall of the vulcanizing mold, and the forming groove is adapted to the surface texture of the spherical skin.

A machine-mounted ball includes a TPU ball skin and a middle tire, and the TPU ball skin is attached to the middle tire.

In a further preferred or optional technical solution of the present invention, the edge of the TPU ball skin patch penetrates into the middle tire layer.

In a further preferred or optional technical solution of the present invention, the middle tire is made of TPU foam material.

The method for making the ball provided by the present invention has at least the following beneficial technical effects:

The invention utilizes the TPU leather to make the TPU ball skin patch, makes full use of the thermoplasticity of the TPU leather, and avoids the high temperature in the vulcanization link from destroying the hand feeling of the surface of the ball skin. And by setting the pattern in the vulcanization mold that is compatible with the surface pattern of the ball, the vulcanization mold can also mold the side of the TPU ball skin patch away from the middle tire into a texture that enhances the feel while vulcanizing. Simplify the production process of the ball and shorten the production cycle of the ball.

In a further preferred or optional embodiment of the present invention, after the TPU leather is cut into a TPU spherical patch, the edge of the TPU spherical patch is also trimmed, so that the edge of the TPU spherical patch becomes Thin, and then heated in the vulcanization mold, the edge of the TPU ball skin patch will melt under the action of high temperature. Due to the pressure inside the middle tire, the middle tire is squeezed from the inside out, which makes the edge of the TPU ball skin patch melt. The rear part penetrates into the mid tire layer. This can prevent the edge part of the TPU ball skin from being delaminated and increase the service life of the ball.

In the TPU leather provided by the present invention, the outer skin layer is made of the TPU material, so that the TPU leather can be used in the method for manufacturing the ball of the present invention. Further, adding a buffer layer to the TPU leather can increase the elasticity of the TPU leather after it is made into a spherical skin.

The inner wall of the vulcanization mold provided by the present invention is provided with a molding groove, which can reshape the surface of the ball skin into a texture that can enhance the hand feeling while adding vulcanization, so as to realize "two uses for one mold", that is, adding vulcanization and reshaping the texture of the ball skin, To simplify the process and shorten the production cycle of the ball.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

Fig. 1 is the flow chart of the ball making method of the first preferred embodiment of the present invention;

Fig. 2 is the flow chart of the ball making method of the second preferred embodiment of the present invention;

3 is a schematic diagram of a preferred embodiment of the present invention, a method for making a ball;

4 is a schematic diagram of a preferred embodiment of the present invention for vulcanization molding;

Figure 5 is a schematic diagram of a preferred embodiment of the present invention where the edge of the ball skin penetrates into the middle tire;

Fig. 6 is the schematic diagram of the vulcanization link in the process of machine sticking the ball skin in the prior art;

Fig. 7 is the partial schematic diagram of the pasting of the ball skin and the middle tire in the prior art;

Figure 8 is a schematic diagram of a preferred embodiment ball of the present invention;

Fig. 9 is the schematic diagram of a kind of preferred embodiment TPU leather material of the present invention;

Figure 10 is a schematic cutaway view of a ball according to a preferred embodiment of the present invention;

Figure 11 is a schematic cutaway view of a ball in the prior art;

Fig. 12 is a schematic diagram of a vulcanizing mold according to a preferred embodiment of the present invention.

In the picture: 1-TPU ball skin patch; 2-outer skin layer; 3-buffer layer; 4-reinforcing layer; 5-vulcanization mold; 6-middle tire layer.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1 to 3 , in a preferred or optional embodiment of the present invention, a method for making a ball at least includes the following steps:

S1. Forming of the ball skin patch, cutting the TPU leather material into the shape of the ball skin patch to make the TPU ball skin patch 1.

It should be noted that the TPU leather described in the above embodiments may be a single-layer leather made of TPU material, or may be a multi-layer composite leather made of TPU material.

S2. Paste the TPU ball skin patch 1, place the TPU ball skin patch 1 on the patch mold, then place the middle tire in the mold, and pressurize the middle tire, so that the TPU ball skin patch 1 is pasted on the mold. on the middle tire.

As a preferred or optional embodiment, the middle tire and the TPU ball skin patch 1 are pasted by oily glue.

Specifically, spread the TPU ball skin patch 1 in the patch mold, and then cover the upper mold and the lower mold in the patch mold, so that the TPU ball skin patch 1 is pasted on the middle tire, and then take out the TPU The middle tire of the ball skin patch 1, and then the pasting of the TPU ball skin patch 1 is completed.

As a preferred or optional embodiment, the TPU ball skin patch 1 is pasted on the TPU foamed middle tire. Specifically, the middle tire layer in the TPU foamed middle tire is made of TPU foamed material. The middle tire layer is made of TPU foam without vulcanizing the middle tire during the production process, thereby reducing the two-time vulcanization in the ball production process to one-time vulcanization, reducing the harmful gas generated during the production process. In addition, compared with ordinary intermediate tires, TPU foamed intermediate tires have superior elasticity.

It should be noted that TPU foaming is a thermoplastic material, so the process of TPU foaming the middle tire is less affected by ambient temperature and humidity, which can improve the stability of product quality.

S3, vulcanization molding, place the middle tire with the TPU ball skin patch 1 in the vulcanization mold with texture, so as to reshape the TPU ball skin pasted on the middle tire through the vulcanization mold with texture .

Preferably, in the above embodiment, the temperature during vulcanization molding is 160°C. When the vulcanization temperature reaches 160°C, the side of the TPU ball skin patch 1 close to the inner wall of the vulcanization mold is in a semi-liquid state, because the TPU material is thermoplastic, compared with the PU or PVC ball skin in the prior art, the surface of the TPU ball skin is in a semi-liquid state. The hardness will not be hardened by the high temperature of 160 ° C, and then it is suitable for high temperature vulcanization.

Referring to Figure 3, Figure 4 and Figure 12, as a preferred or optional embodiment, the inner wall of the vulcanization mold is provided with a molding groove, so that the side of the TPU ball skin patch 1 and the inner wall of the vulcanization mold are melted and injection molded. Surface with hand-enhancing particles.

It should be noted that, referring to FIG. 6 , in the existing method of attaching a ball skin to a machine, the surface of the ball skin is firstly added with grain patterns that enhance the hand feel, and then during the vulcanization process, the particles on the surface of the ball skin are deformed due to high temperature, and the ball is destroyed. Leather surface feel. In addition, the PU or PVC ball skins in the prior art do not have thermoplasticity, and when vulcanized, the surface hardness of the ball skins will increase, and the surface feel will be further reduced.

S4, cooling and trimming, take out the product, cool down, and trim the surface.

It should be noted that in the prior art, when the PU or PVC ball skins are pasted by machine stickers, the unit working time is 10min to 14min, and the above method of sticking the ball skins can reduce the unit working time to 5min to 7min, thereby shortening the length of the ball. production cycle.

As a further preferred or optional embodiment of the present invention, the TPU ball skin patch 1 cut into the shape of a basketball sheet is trimmed to reduce the edge thickness of the TPU ball skin patch 1 .

It should be noted that, referring to FIG. 5 , in the above embodiment, the thickness of the edge portion of the TPU ball skin patch 1 is reduced after the edge processing is performed, and then the edge portion of the TPU ball skin patch 1 is in the vulcanization process during the vulcanization operation. hot melt state. Further, during the vulcanization operation, the middle tire is pressurized, so that the middle tire is squeezed from the inside to the outside, and then the edge part of the TPU ball skin patch 1 penetrates into the middle tire layer, so that the ball can be peeled during use to increase life of the ball.

It should be noted that, referring to FIG. 7 and FIG. 11 , in the prior art, the edge of the PU or PVC ball skin will not melt when the machine is attached to the ball skin, and then the PU or PVC ball skin in the prior art completely relies on the oily rubber and the middle tire layer. Paste, with the increase of use time, the edge of the PU or PVC ball skin is prone to open skin, thereby shortening the service life of the ball.

3, 9 and 10, in a preferred or optional embodiment of the present invention, the TPU leather at least includes an outer skin layer 2 and a buffer layer 3, the outer skin layer 2 and the buffer layer 3 are bonded to each other, and the outer skin layer 2 is It is made of TPU material, and the outer skin layer 2 is located on the side away from the middle tire.

As a preferred or optional embodiment, the thickness of the outer skin layer 2 is 0.08 mm to 0.1 mm. The thickness of the buffer layer 3 is 0.6 mm to 0.4 mm.

9 and 10, as a preferred or optional embodiment, the outer skin layer 2 and the buffer layer 3 are bonded by anti-toluene glue.

In a further preferred or optional embodiment of the present invention, the buffer layer 3 can be made of any one of TPU foam material, PU, PVC, EVA and TPE.

9 and 10, as a further preferred or optional embodiment, the TPU leather further includes a reinforcement layer 4, and the reinforcement layer 4 and the buffer layer 3 are pasted on the side facing away from the outer skin layer 2.

Preferably, the reinforcing layer 4 is made of non-woven fabric or non-woven fabric. Further preferably, the thickness of the reinforcement layer 4 is 0.09 mm to 0.1 mm.

8 to 10 , in a further preferred or optional embodiment, the TPU leather described in any of the above embodiments can be made into a ball skin by the ball manufacturing method of the present invention.

Referring to FIG. 12 , in a preferred or optional embodiment of the present invention, the inner wall of the vulcanization mold 5 is provided with a forming groove, and the forming groove is adapted to the surface texture of the ball skin.

In a preferred or optional embodiment of the present invention, the shape of the forming groove on the inner wall of the vulcanization mold 5 is adapted to the grain pattern of the surface of the spherical skin that enhances the hand feel, so that the spherical skin surface is injection-molded into the spherical skin through the forming groove on the inner wall of the vulcanizing mold 5 Grainy textured surface.

In a preferred or optional embodiment, the above-mentioned vulcanization mold 5 is suitable for the method for making the ball according to the present invention.

As a preferred or optional embodiment of the present invention, the machine-fitted ball of the present invention is manufactured by the method for making a ball described in any one of the above embodiments.

As a preferred or optional embodiment of the present invention, the machine sticker ball of the present invention is made of the TPU leather described in any one of the above embodiments.

As a preferred or optional embodiment of the present invention, the edge of the TPU ball skin patch 1 penetrates into the middle tire layer 6 .

In the above preferred embodiment, the edge of the TPU ball skin patch 1 penetrates into the middle tire layer 6, which can effectively increase the stability between the ball skin and the middle tire, prevent the edge of the ball skin from opening, thereby prolonging the service life of the ball.

In a further preferred or optional embodiment of the present invention, the TPU ball skin patch 1 can be the TPU leather material described in any one of the preferred embodiments of the present invention, and is made by the method for making the ball of the present invention.

In a further preferred or optional embodiment of the present invention, the TPU spherical skin patch 1 includes at least one outer skin layer 2 made of TPU material.

As a further preferred or optional embodiment of the present invention, the side of the TPU ball skin patch 1 facing away from the middle tire is provided with grain patterns that increase hand feel. Further preferably, the grain pattern on the surface of the TPU ball skin patch 1 is made by the vulcanization mold 5 of the present invention.

As a further preferred or optional embodiment of the present invention, the TPU ball skin patch 1 further includes a buffer layer 3 . Further preferably, the buffer layer 3 can be made of any one of TPU foam material, PU, PVC, EVA and TPE.

In a further preferred or optional embodiment of the present invention, the TPU ball skin patch 1 further includes a reinforcement layer 4 . Preferably, the reinforcing layer 4 is a non-woven fabric and/or a non-woven fabric.

In a further preferred or optional embodiment of the present invention, the middle tire layer 6 is made of TPU foam material.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. a preparation method of a ball, is characterized in that, comprises the following steps at least: The ball skin patch is formed, and the TPU leather material is cut into the shape of the ball skin patch to make the TPU ball skin patch (1); Paste the TPU ball skin patch (1), place the TPU ball skin patch (1) on the patch mold, then place the middle tire in the mold, and pressurize the middle tire to make the TPU ball skin patch ( 1) Paste on the middle tire; Vulcanization molding, place the middle tire with the TPU ball skin patch (1) in a vulcanized mold with a texture, so as to reshape the TPU ball skin pasted on the middle tire through the textured vulcanization mold ; Cool down trim, remove the product, cool down, and trim the surface. 2. The method for making a ball according to claim 1, wherein the TPU ball skin patch (1) cut into the shape of a basketball sheet is trimmed, so that the edge thickness of the TPU ball skin patch (1) is reduced. Small. 3 . The method for producing a ball according to claim 1 , wherein the vulcanization temperature is 160° C. 4 . 4. A TPU leather material for use in the method according to any one of claims 1 to 3, wherein the TPU leather material at least comprises an outer skin layer (2) and a buffer layer (3), the outer skin layer (2) and the buffer layer (3) are mutually bonded, and the outer skin layer (2) is made of TPU material. 5. TPU leather material according to claim 4, is characterized in that, described buffer layer (3) is made of any material in TPU foam material, PU, PVC, EVA and TPE. 6. The TPU leather material according to claim 4, characterized in that, the TPU leather material further comprises a reinforcement layer (4), and the reinforcement layer (4) and the buffer layer (3) are away from the outer skin layer (2) is pasted on one side. 7. A vulcanizing mold for the method according to any one of claims 1 to 3, wherein the inner wall of the vulcanizing mold (5) is provided with a forming groove, and the forming groove and the surface texture of the ball skin fit. 8 . A machine-fitted ball, wherein the skin of the machine-fitted ball is made by the method according to any one of claims 1 to 3. 9 . 9 . The machine-mounted ball according to claim 8 , wherein the edge of the TPU ball skin patch ( 1 ) penetrates into the middle tire layer ( 6 ). 10 . 10 . The machine-mounted ball according to claim 9 , wherein the middle tire layer ( 6 ) is made of TPU foam material. 11 .

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