Preparation process of improved racket

Abstract

The invention relates to the technical field of rackets, and discloses a preparation process of an improved racket, which comprises the following steps: step one, taking a carbon fiber plate or a glass fiber plate, sewing and bonding the carbon fiber plate or the glass fiber plate on an integrated solid EPP material through colloid, and pressing again through pressure equipment; Step 2, the pressed primary product is made into the external structural shape of the required racket by a cutting machine, and it is cleaned; Step 3, put the cleaned racket prototype into a UV printer to draw the surface pattern or attach the surface with water marks. By adjusting the internal material of the racket to the integrated solid EPP material, the prepared racket can be prevented from being deformed, and at the same time, the elastic performance is improved.

Claims

1. A process for preparing an improved racket, comprising the following steps: Step 1, sewing and bonding involving a carbon fiber plate or a glass fiber plate being sewed and bonded onto an integrated solid EPP material using colloid, followed by being pressed again by a pressure device; Step 2, making the pressed primary product into the external structural shape of the required racket by a cutting machine and cleaning it; Step 3, putting the cleaned racket prototype into a UV printer for drawing the surface pattern or attaching the surface with water marks; Step 4, assembling the racket prototype with the surface pattern drawn in step 3, protecting the edge strip, the back cover, and the handle cover.

2. The preparation process of an improved racket according to claim 1, characterized in that in step 1, epoxy resin glue is used as the colloid.

3. The preparation process of an improved racket according to claim 1, characterized in that in step 1, the integrated solid expanded polypropylene is made of polypropylene material, and the density of the polypropylene material is 0.01 g/cm-0.05 g/cm.

4. The manufacturing process of an improved racket according to claim 1, characterized in that in step 2, the rotating speed of the cutting machine is 1750-3000 r/min, and the cleaning time is 25-30 min.

5. The manufacturing process of an improved racket according to claim 1, characterized in that in step 4, the thickness of the protective edge strip is 2 mm-3 mm.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is a flowchart of the steps of the present invention.

DETAILED DESCRIPTION

[0017] In the following, the technical scheme in the embodiment of the present invention will be clearly and completely described in combination with the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, but not the whole embodiment. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative labor belong to the scope of protection of the present invention.

Example 1

[0018] Referring to FIG. 1, an embodiment of the present invention provides a preparation process of an improved racket, which comprises the following steps: [0019] Step 1, take carbon fiber plate or glass fiber plate and sew them on the integrated solid EPP material by colloid, and then press them again by pressure equipment; [0020] Step 2, the pressed primary product is made into the external structural shape of the required racket by a cutting machine, and it is cleaned; [0021] Step 3, put the cleaned racket prototype into a UV printer to draw the surface pattern or attach the surface with water marks; [0022] Step 4, assemble the racket prototype with the surface pattern drawn in step 3 to protect the edge strip, the back cover and the handle cover.

[0023] In the first step, the colloid adopts epoxy resin glue.

[0024] In the first step, the integrated solid expanded polypropylene is made of polypropylene material, and the density of the polypropylene material is 0.01 g/cm-0.05 g/cm.

[0025] In step 2, the rotating speed of the cutting machine is 1750-3000 r/min, and the cleaning time is 25-30 min.

[0026] In step 4, that thickness of the protective edge strip is 2 mm-3 mm.

Example 2

[0027] The embodiment of the invention provides a preparation process of an improved racket, which comprises the following steps: [0028] Step 1, two wooden boards are made into the required external structural shape of the racket by a cutting machine, and the surface of the board is polished by a grinder, and then the board is soaked in water and taken out to dry to obtain the embryonic form of the racket; [0029] Step 2, the dried racket prototype is soaked in oil and then dried again; [0030] Step 3, placing the racquet embryonic form dried in step 2 up and down, adding solid expanded polypropylene between the two racquet embryonic forms and sewing them with colloid to obtain a semi-finished racquet; [0031] Step 4, sticking sponge on the middle of the semi-finished racket; [0032] Step 5, cross-connect strings between the middle parts of the semi-finished racket and install the racket handle to obtain a complete racket.

[0033] In the first step, the rotating speed of the grinder is 1750-3000 r/min, and the soaking time in water is 25-30 min.

[0034] In the second step, the oil is one or more of linseed oil and sunflower seed oil.

[0035] In the third step, the integrated solid expanded polypropylene is made of polypropylene, and the density of the polypropylene is 0.01 g/cm-0.05 g/cm.

[0036] In the third step, epoxy resin glue is used as the colloid.

[0037] In step 4, the sponge is a foam sponge, and the thickness of the foam sponge is 0.5 mm-2 mm to 2 mm.

Example 3

[0038] The embodiment of the invention provides a preparation process of an improved racket, which comprises the following steps: [0039] Step 1, two wooden boards are made into the required external structural shape of the racket by a cutting machine, and the surface of the board is polished by a grinder, and then the board is soaked in water and taken out to dry to obtain the embryonic form of the racket; [0040] Step 2, the dried racket prototype is soaked in oil and then dried again; [0041] Step 3, put the bat prototype dried in step 2 up and down, add solid expanded polypropylene between the two bat prototypes and sew them with colloid to obtain the finished bat.

[0042] In the first step, the rotating speed of the grinder is 1750-3000 r/min, and the soaking time in water is 25-30 min.

[0043] In the second step, the oil is one or more of linseed oil and sunflower seed oil.

[0044] In the third step, the solid expanded polypropylene is made of polypropylene, and the density of the polypropylene is 0.01 g/cm-0.05 g/cm.

[0045] In the third step, epoxy resin glue is used as the colloid.

Comparative Example 1

[0046] The embodiment of the invention provides a preparation process of an improved racket, which comprises the following steps: [0047] Step 1, two wooden boards are made into the required external structural shape of the racket by a cutting machine, and the surface of the board is polished by a grinder, and then the board is soaked in water and taken out to dry to obtain the embryonic form of the racket; [0048] Step 2, placing the dried bat prototype up and down, adding solid expanded polypropylene between the two bat prototypes and sewing them with colloid to obtain a semi-finished bat; [0049] Step 3, sticking sponges on both sides of the semi-finished racket; [0050] Step 4, the smooth surface and granular rubber are respectively adhered to the two sponges to obtain a complete racket.

[0051] In the first step, the rotating speed of the grinder is 1750-3000 r/min, and the soaking time in water is 25-30 min.

[0052] In the second step, the solid expanded polypropylene is made of polypropylene, and the density of the polypropylene is 0.01 g/cm-0.05 g/cm.

[0053] In the second step, epoxy resin glue is used as the colloid.

[0054] In the third step, the sponge is a foam sponge, and the thickness of the foam sponge is 0.5 mm-2 mm to 2 mm.

[0055] In step 4, both the smooth surface and the granular rubber are special rubber for table tennis bats.

Comparative Example 2

[0056] The embodiment of the invention provides a preparation process of an improved racket, which comprises the following steps: [0057] Step 1, two wooden boards are made into the required external structural shape of the racket by a cutting machine, and the surface of the board is polished by a grinder, and then the board is soaked in water and taken out to dry to obtain the embryonic form of the racket; [0058] Step 2, the dried racket prototype is soaked in oil and then dried again; [0059] Step 3, placing the racquet embryonic form dried in step 2 up and down, adding a honeycomb expanded polypropylene between the two racquet embryonic forms, and sewing with colloid to obtain a semi-finished racquet; [0060] Step 4, sticking sponges on both sides of the semi-finished racket; [0061] Step 5, the smooth surface and granular rubber are respectively adhered to the two sponges to obtain a complete racket.

[0062] In the first step, the rotating speed of the grinder is 1750-3000 r/min, and the soaking time in water is 25-30 min.

[0063] In the second step, the oil is one or more of linseed oil and sunflower seed oil.

[0064] In the third step, epoxy resin glue is used as the colloid.

[0065] In step 4, the sponge is a foam sponge, and the thickness of the foam sponge is 0.5 mm-2 mm to 2 mm.

[0066] In step 5, both the smooth and granular rubber sheets are special rubber sheets for table tennis bats.

Comparative Example 3

[0067] The embodiment of the invention provides a preparation process of an improved racket, which comprises the following steps: [0068] Step 1, two wooden boards are made into the required external structural shape of the racket by a cutting machine, and the surface of the board is polished by a grinder, and then the board is soaked in water and taken out to dry to obtain the embryonic form of the racket; [0069] Step 2, placing the dried bat prototype up and down, adding a honeycomb expanded polypropylene between the two bat prototypes and sewing through colloid to obtain a semi-finished bat; [0070] Step 3, sticking sponges on both sides of the semi-finished racket; [0071] Step 4, the smooth surface and granular rubber are respectively adhered to the two sponges to obtain a complete racket.

[0072] In the first step, the rotating speed of the grinder is 1750-3000 r/min, and the soaking time in water is 25-30 min.

[0073] In the second step, epoxy resin glue is used as the colloid.

[0074] In the third step, the sponge is a foam sponge, and the thickness of the foam sponge is 0.5 mm-2 mm to 2 mm.

[0075] In step 4, both the smooth surface and the granular rubber are special rubber for table tennis bats.

Comparative Example 4

[0076] The embodiment of the invention provides a preparation process of an improved racket, which comprises the following steps: [0077] Step 1, two wooden boards are made into the required external structural shape of the racket by a cutting machine, and the surface of the board is polished by a grinder, and then the board is soaked in water and taken out to dry to obtain the embryonic form of the racket; [0078] Step 2, the dried racket prototype is soaked in oil and then dried again; [0079] Step 3, placing the racquet embryonic form dried in step 2 up and down, adding a honeycomb expanded polypropylene between the two racquet embryonic forms, and sewing with colloid to obtain a semi-finished racquet; [0080] Step 4, sticking sponge on the middle of the semi-finished racket; [0081] Step 5, cross-connect strings between the middle parts of the semi-finished racket and install the racket handle to obtain a complete racket.

[0082] In the first step, the rotating speed of the grinder is 1750-3000 r/min, and the soaking time in water is 25-30 min.

[0083] In the second step, the oil is one or more of linseed oil and sunflower seed oil. In the third step, epoxy resin glue is used as the colloid.

[0084] In step 4, the sponge is a foam sponge, and the thickness of the foam sponge is 0.5 mm-2 mm to 2 mm.

[0085] According to the above examples and comparative examples, the following data tables are obtained:

TABLE-US-00001 Wear Protective resistance Effect experiment effect effect Life Weight Example 1 Excellent Excellent Excellent proper Example 2 Excellent Excellent Excellent proper Example 3 Excellent Excellent Good Lighter Comparative example 1 Excellent Good Good Heavier Comparative example 2 Excellent Excellent Lower Heavier Comparative example 3 Excellent Good Good Proper Comparative example 4 Excellent Excellent Excellent Proper

[0086] Summary: One-piece solid EPP material is hard on the outside and soft on the inside, which has excellent deformation resistance. The traditional racket is made of honeycomb PP and other materials. Although it can maintain the shape of the racket to a certain extent, it is still prone to deformation, damage, delamination and elastic fatigue during long-term use. The integrated solid EPP material has excellent compression resistance, which can effectively resist the impact of the racket in the process of sports, so that the racket can maintain a stable shape in various extreme environments, thus ensuring that athletes can better play their technical level. One-piece solid EPP material has good elasticity. In the process of racket preparation, through the reasonable design and process adjustment of the integrated solid EPP material, the elasticity of the racket can be improved, so that the racket can better transmit the strength of the athletes and provide greater attack power and stability. At the same time, the integrated solid EPP material also has a fast rebound speed, which enables the racket to rebound quickly after hitting the ball and provides more time and space for the athletes' next move. In order to improve the wear resistance of the racket, the methods of soaking in water to dry and soaking in oil are adopted in the preparation process. Water can effectively remove the dirt and impurities on the surface of the racket and prevent the external environment from eroding the racket. The oil can penetrate into the racket to form a protective film, which enhances the wear resistance of the racket. This method avoids the wear problem of the racket in the long-term use and greatly improves the service life of the racket. By adjusting the internal material of the racket to the integrated solid EPP material, the prepared racket can prevent deformation, breakage, delamination, elastic fatigue and other problems, greatly improve the effective hitting area, and improve the elastic performance at the same time. In the preparation process of the racket, the lack of elastic fatigue is solved, and the integrated solid EPP material plays a role in wear-resistant protection of the racket, avoiding the problem of breakage of the racket after long-term use, and prolonging the service life.

[0087] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.