Application of rubber sponge in manufacturing of ping-pong bottom plate

Abstract

The invention discloses an application of a rubber sponge in manufacturing of a ping-pong bottom plate, which comprises the following steps of: selecting wood, drying, slitting into a wood surface layer, a second wood layer and a wood core material wood block according to the material, selecting a rubber sponge block with specific hardness, cutting into blocks, cutting synthetic fiber blocks, neatly arranging the wood layers, brushing a wood adhesive, and drying to obtain the ping-pong bottom plate. And arranging and stacking the wood material, the rubber sponge and the synthetic fiber according to a specific sequence, rolling in a rolling machine, and finally naturally cooling and standing for more than 48 hours. In addition, specific requirements of related materials such as selectable types of wood of each layer, hardness of the rubber sponge, types of synthetic fibers and types of wood adhesives are also defined, the flexibility and rebound resilience of the bottom plate are improved through the buffering and rebound effects of the rubber sponge, and the control force and the hand feeling clarity of the bottom plate are improved. And great help is provided for improvement of sports scores and entertainment and fitness of vast table tennis players and enthusiasts.

Description

Technical Field

[0001] The present invention relates to the technical field of table tennis racket manufacturing, and more specifically to the application of a rubber sponge in the manufacturing of a table tennis base plate. Background Art

[0002] In the process of manufacturing table tennis rackets, the most critical step is the rolling of the bottom plate of the table tennis racket. The bottom plate of the table tennis racket uses various woods with different properties. In the prior art, in order to enhance the elasticity and flexibility of the bottom plate and improve the deformation resilience of the bottom plate, various elastic skeleton materials such as carbon fiber, aramid fiber, and glass fiber are used. Due to the addition of various other synthetic materials such as reinforced carbon fiber, in order to ensure the strong adhesion of synthetic fibers to wood, a large amount of adhesives are used in production. These adhesives form crystals after drying, become brittle and hard, and increase weight, making the racket more than strong, and the feel of catching and controlling the ball decreases. Similarly, different wooden materials also have similar phenomena. Harder wood is heavier, stronger, and more difficult to control. Although softer wooden materials are lighter and better controlled, they lack strength and have no impact.

[0003] Therefore, a method for applying a rubber sponge in the manufacture of a table tennis bottom plate is now proposed to solve the above problems. Summary of the invention

[0004] In view of this, the present invention provides an application of a rubber sponge in the manufacture of a table tennis bottom plate.

[0005] To achieve the above object, the present invention provides the following technical solution, comprising the following steps:

[0006] A: Select the wood and dry it;

[0007] B: The dried wood is divided into wood surface wood, wood second layer wood and wood core wood according to different materials and requirements, and cut into blocks respectively;

[0008] C: Select rubber sponge blocks of different hardness and cut them into blocks;

[0009] D: Cutting the synthetic fibers into fiber blocks;

[0010] E: Arrange the cut wooden surface layer, second layer wood, and wooden core material in order, and evenly apply the wood adhesive on the surface of various woods;

[0011] F: Arrange the painted wood materials, rubber sponge and synthetic fiber materials in the order of wood surface layer, second layer wood, wood core material, rubber sponge and synthetic fiber, stack them neatly and put them into the rolling machine;

[0012] G: Allow the rolled bottom plate to cool naturally for more than 48 hours.

[0013] Preferably, in the application of the above-mentioned rubber sponge in the manufacture of table tennis bottom plates, the wooden surface layer is made of limba, paulownia, bamboo, ayous or cypress, the wooden second layer is made of spruce, limba or basswood, and the wooden core material is made of paulownia, ayous, poplar or cypress.

[0014] Preferably, in the application of the rubber sponge in the manufacture of table tennis bottom plates, the hardness of the rubber sponge is 40±3 degrees Shore hardness.

[0015] Preferably, in the application of the above-mentioned rubber sponge in the manufacture of table tennis bottom plates, the synthetic fiber material is carbon fiber, aryl carbon fiber or ZLC fiber.

[0016] Preferably, in the application of the above-mentioned rubber sponge in the manufacture of table tennis baseboards, the cutting thickness of the wooden surface layer wood is 0.5-1.0mm, and the size is 180×280mm, the cutting thickness of the wooden second layer wood is 1.0-2.5mm, and the size is 180×280mm, the cutting thickness of the wooden core material is 2.5-5mm, and the size is 180×280mm, the cutting thickness of the rubber sponge is 0.3-1.0mm, and the size is 180×280mm, and the cutting size of the synthetic fiber is 180×280mm.

[0017] Preferably, in the application of the rubber sponge in the manufacture of table tennis bottom plates, the wood adhesive is urea-formaldehyde glue or white latex.

[0018] Preferably, in the application of the above-mentioned rubber sponge in the manufacture of table tennis bottom plates, the rolling temperature of the rolling mill is 70-120° C., the pressure is 2-5 MPa, and the rolling time is 10-30 min.

[0019] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses an application of rubber sponge in the manufacture of table tennis bottom plates, and adds rubber foam sponge sheets to wood materials and synthetic fiber materials. It not only brings out the strength of special wood and synthetic fiber materials, but also increases the flexibility and resilience of the bottom plate through the buffering and rebound effects of the rubber sponge, thereby improving the control force and hand feeling clarity of the bottom plate.

[0020] It will be of greater help to table tennis players and enthusiasts in improving their sports performance and entertainment and fitness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0022] Figure 1 The accompanying drawing is a schematic diagram of the internal structure of the table tennis bottom plate of the present invention. DETAILED DESCRIPTION

[0023] 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.

[0024] Please see attached Figure 1 , is the application of a rubber sponge in the manufacture of a table tennis bottom plate disclosed by the present invention,

[0025] First, according to the different requirements of the bottom plate, we select and process the wooden materials of different materials and thicknesses, and the total thickness of the wooden materials should not be less than 85% of the total thickness of the bottom plate. Similarly, we select and process the rubber sponges 4 of different thicknesses and hardnesses, and the total thickness of the rubber sponges 4 should not exceed 15% of the total thickness of the bottom plate. According to the different properties of the wood, the sponges are coated with different adhesives, and after the drying time is completed, they are placed in the flat rolling machine for pressure application and pressure maintenance, and the bottom plate is taken out after the specified time.

[0026] Similarly, for the bottom plate that needs to be added with other materials such as synthetic fiber, carbon fiber material, etc., the rubber foam sponge can still be added thereto. However, the thickness and hardness of the rubber sponge 4 should be controlled well, and the total thickness of the non-wood material and the rubber sponge 4 should not exceed 15% of the total thickness of the bottom plate.

[0027] like Figure 1 As shown in the figure, in table tennis bottom plates, various reinforced carbon fibers and other synthetic materials are added. In order to ensure the strong bonding of synthetic fibers to wood, a large amount of adhesives are used in production. These adhesives form crystals after drying, become brittle and hard, and increase weight, making the plate more rigid and reducing the feel of catching and controlling the ball. The same phenomenon also occurs with different wood materials. Harder wood is heavier, stronger, and more difficult to control. Softer wood materials, although lighter and better controlled, lack strength and impact.

[0028] In order to solve the above problems, the present invention adds rubber foam sponge sheets to the wood material and synthetic fiber material during the rolling of the table tennis bottom plate. It not only brings out the strength of the special wood and synthetic fiber materials, but also increases the flexibility and resilience of the bottom plate through the buffering and rebound effects of the rubber sponge 4, thereby improving the controllability and hand feeling clarity of the bottom plate.

[0029] It will be of greater help to table tennis players and enthusiasts in improving their sports performance and entertainment and fitness.

[0030] Preparation of wood materials

[0031] According to the performance requirements of the rackets, we need to select various types of wood from different locations. The wood is first dried and air-dried in the warehouse for more than 10 days.

[0032] Wood surface layer 1 The wood is generally selected from Limba, Paulownia, Bamboo, Ayous, Cypress, etc., with a thickness between 0.5mm-1.0mm, and cut into wooden blocks of 180×280mm size.

[0033] The wood for the second layer 2 is generally made of spruce, linden, basswood, etc. The material thickness is between 1.0-2.5mm, and it is spliced ​​into 180×280mm blocks according to the wood texture.

[0034] The wooden core material 3 is generally selected from materials such as Paulownia, Ayous, poplar, and cypress, and the thickness is generally controlled between 2.5-5 mm. It is spliced ​​into wooden blocks of 180×280 mm in size according to the wood texture.

[0035] Preparation of rubber sponge 4 materials

[0036] According to the performance requirements of the table tennis racket, 4 rubber sponges with different hardness and elasticity are selected or generated, the sponge hardness is controlled at 40±3 degrees Shore hardness, cut into 0.3-1.0mm thickness, and cut into 180×280mm size.

[0037] Preparation of synthetic fibers

[0038] The synthetic fiber material (carbon fiber, aryl carbon fiber, ZLC fiber, etc.) is cut into fiber blocks with a size of 180×280 mm.

[0039] Glue brush

[0040] Arrange the cut wooden surface layer 1, the second layer of wood, and the wooden core material 3 in sequence, and evenly apply the wood adhesive (such as urea-formaldehyde glue, white latex, etc.) on the surfaces of various woods.

[0041] Evenly apply rubber adhesive (such as PU adhesive, latex adhesive, etc.) to 4 pieces of cut rubber sponges and dry them for more than 30 minutes.

[0042] Evenly apply epoxy resin adhesive to the synthetic fiber block.

[0043] Rolling

[0044] Arrange the various wooden materials, rubber sponges 4 and synthetic fiber materials painted above in order and stack them neatly. Figure 1 2. Put it into the flat rolling mill, control the temperature at 70-120℃, the pressure at 2-5Mpa, and the time at 10-30min.

[0045] park

[0046] After rolling, the bottom plate is left to cool naturally for more than 48 hours, inspected and classified, and production is completed.

[0047] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0048] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An application of a rubber sponge (4) in the manufacture of a table tennis base, characterized in that: The following steps are involved: A: Select the wood and dry it; B: The dried wood is divided into wood surface layer (1) wood, wood second layer (2) wood and wood core material (3) wood according to different materials and requirements, and cut into blocks respectively; C: Select rubber sponges (4) of different hardness and cut them into blocks; D: Cutting the synthetic fibers into fiber blocks; E: Arrange the cut wooden surface layer (1), the second layer of wood, and the wooden core material (3) in order, and evenly apply the wood adhesive to the surfaces of the various woods; F: Arrange the painted wood material, rubber sponge (4) and synthetic fiber material in the order of wood surface layer (1), second layer wood, wood core material (3), rubber sponge (4) and synthetic fiber, stack them neatly and put them into a rolling machine; G: Allow the rolled bottom plate to cool naturally for more than 48 hours.

2. The use of the rubber sponge (4) according to claim 1 in the manufacture of table tennis bottom plates, characterized in that: The wood material of the wooden surface layer (1) is limba, paulownia, bamboo, ayous or cypress, the wood material of the wooden second layer (2) is spruce, limba or basswood, and the wood material of the wooden core material (3) is limba, ayous, poplar or cypress.

3. The use of the rubber sponge (4) according to claim 1 in the manufacture of table tennis bottom plates, characterized in that: The hardness of the rubber sponge (4) is 40±3 degrees Shore hardness.

4. The use of the rubber sponge (4) according to claim 1 in the manufacture of table tennis bottom plates, characterized in that: The synthetic fiber material is carbon fiber, aryl carbon fiber or ZLC fiber.

5. The use of the rubber sponge (4) according to claim 1 in the manufacture of table tennis bottom plates, characterized in that: The wood surface layer (1) has a cutting thickness of 0.5-1.0 mm and a size of 180×280 mm, the wood second layer (2) has a cutting thickness of 1.0-2.5 mm and a size of 180×280 mm, the wood core material (3) has a cutting thickness of 2.5-5 mm and a size of 180×280 mm, the rubber sponge (4) has a cutting thickness of 0.3-1.0 mm and a size of 180×280 mm, and the synthetic fiber has a cutting size of 180×280 mm.

6. The use of the rubber sponge (4) according to claim 1 in the manufacture of table tennis bottom plates, characterized in that: The wood adhesive is urea-formaldehyde glue or white latex.

7. The use of the rubber sponge (4) according to claim 1 in the manufacture of table tennis bottom plates, characterized in that: The rolling temperature of the rolling mill is 70-120° C., the pressure is 2-5 MPa, and the rolling time is 10-30 min.

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