A high-strength baseball bat and a preparation method thereof are invented and developed by Jiang Yongjiu, Jin Chenghua, Liu Chao and Liu Qingguo.
The present invention provides a high-strength baseball bat and a preparation method thereof. The high-strength baseball bat includes a baseball bat body, and a handle portion of the baseball bat body is wrapped with a carbon fiber mesh. The preparation method of the high-strength baseball bat includes the following steps: wrapping the carbon fiber mesh on the grip of the baseball bat, brushing glue on the surface of the carbon fiber mesh; setting a telescopic sleeve on the outside of the carbon fiber mesh, and heating the telescopic sleeve; A barrel-shaped plastic bag with an open top and a closed bottom is placed in the tank, and the baseball bat is placed in the barrel-shaped plastic bag; the lid of the vacuum tank is closed, and the glue is preliminarily dried by pressure; open the vacuum tank, take out the baseball bat, and remove the Barrel-shaped plastic bag and telescopic sleeve; put the baseball bat into the drying room, and dry it for 16-18 hours to completely cure the glue; the temperature of the drying room is 80 ℃. The baseball bat of the invention has a simple and reasonable structure, increases the strength of the grip portion, and overcomes the problems that the grip portion of the existing baseball bat is thin, the force is large when playing, and the grip portion is broken.
[0001] The invention relates to sports equipment technology, in particular to a high-strength baseball bat and a preparation method thereof.
Background technique
[0002] Baseball bat is a bat used by batters to hit the ball in baseball games. There are three common types of bats: wooden bats, aluminum bats, and composite bats. According to the rules of baseball, the bat must be a smooth, round bat with a diameter of no greater than 2.75 inches (seven centimeters) at its thickest part and a length of no more than 42 inches (106.7 centimeters), and must be made of a single piece of wood. Currently, baseball bat grips are too thin and break easily.
content
[0003] The purpose of the present invention is to provide a high-strength baseball bat in view of the problem that the grip portion of the existing baseball bat is too thin and easy to break. The handshake is thin, the force is strong when playing, and the handshake is broken.
[0004] In order to achieve the above purpose, the technical solution adopted in the present invention is: a high-strength baseball bat, comprising a baseball bat body, and the handle portion of the baseball bat body is wrapped with a carbon fiber mesh.
[0005] Further, the size of the carbon fiber mesh along the length direction of the baseball bat is 510±10 mm.
[0006] Further, the mesh size of the carbon fiber mesh is 5-10 mm.
[0007] Another object of the present invention also provides a kind of preparation method of high-strength baseball bat, comprising the following steps:
[0008] Step 1. Put the carbon fiber mesh on the grip of the baseball bat, apply glue on the surface of the carbon fiber mesh, and adjust the carbon fiber mesh to make it flat and not folded. For the adjustment, the carbon fiber mesh can be flattened by wearing rubber gloves according to the shape of the grip. To stretch straight, not twist;
[0009] Step 2. Set a telescopic sleeve on the outside of the carbon fiber mesh, heat the telescopic sleeve to shrink the telescopic sleeve, tightly bind the outside of the carbon fiber mesh, make the glue on the surface of the carbon fiber mesh uniform and flat, press the carbon fiber mesh to tighten, and fasten it to the surface of the bat ;
[0010] Step 3. Open the vacuum tank, place a barrel-shaped plastic bag with an open upper end and a closed bottom in the vacuum tank, place the baseball bat in the barrel-shaped plastic bag, and open the upper end of the barrel-shaped plastic bag to facilitate the outflow of air; cover the vacuum tank The lid is closed, pressurized, the pressure is 0.5-0.7Mpa, preferably 0.5Mpa, the temperature is 20±2°C, and the pressure is applied for 2-3 hours to make the glue preliminarily dry;
[0011] Step 4. Open the vacuum tank, take out the baseball bat, uncover the outer barrel-shaped plastic bag, and then remove the telescopic sleeve;
[0012] Step 5. Put the baseball bat in step 4 (well-preserved) into the drying chamber, and dry it for 16-18 hours to completely cure the glue; the temperature of the drying chamber is 80-90°C, preferably 80°C;
[0013] Step 6. After taking out the baseball bat, carry out sanding, painting and packaging. The sanding, painting and packaging can adopt conventional techniques.
[0014] Further, the glue is epoxy resin, and the ratio of the main agent of the glue to the curing agent is 1:1.4.
[0015] Further, the telescopic sleeve is a heat shrinkable sleeve, including but not limited to polyethylene/EVA heat shrinkable sleeve. The size of the telescopic sleeve is 520±10mm.
[0016] Further, in the step 2, a hair dryer is used to heat the telescopic sleeve.
[0017] Further, the heating requirements of the drying chamber in the step 5 are as follows: starting from normal temperature, the temperature is increased by 20°C every hour until the temperature rises to 80-90°C.
[0018] The high-strength baseball bat of the present invention has a scientific and reasonable structure, and the preparation method thereof is simple and easy to implement, and has the following advantages compared with the prior art:
[0019] 1. Coat the handshake with carbon fiber mesh to increase the strength of the handshake, overcoming the problems of the existing baseball bat’s thin handshake, strong force and broken handshake when playing.
[0020] 2. The surface of carbon fiber is smooth and flat.
[0021] 3. The addition of the carbon fiber mesh has little effect on the weight of the baseball bat. The weight of the raw materials used in the present invention is: the total weight of the carbon fiber mesh + glue is about 38-45 grams. During the drying process in the drying room, the bat will lose about 10 grams. Gram weight; when machining carbon fiber bats, taking into account the weight gain and loss, the baseball bat adds a total of 28-35 grams.
technical requirements
1. A high-strength baseball bat, characterized in that it comprises a baseball bat body, and the grip portion of the baseball bat body is wrapped with a carbon fiber mesh.
2 . The high-strength baseball bat according to claim 1 , wherein the size of the carbon fiber mesh along the length direction of the baseball bat is 510±10 mm. 3 .
3 . The high-strength baseball bat according to claim 1 , wherein the mesh size of the carbon fiber mesh is 5-10 mm. 4 .
4. a preparation method of the high-strength baseball bat described in any one of claims 1-3, is characterized in that, comprises the following steps: Step 1, the carbon fiber mesh is sleeved on the baseball bat grip, and the surface of the carbon fiber mesh is brushed with glue , adjust the carbon fiber mesh to make it flat and not folded; step 2, set a telescopic sleeve on the outside of the carbon fiber mesh, heat the telescopic sleeve to shrink the telescopic sleeve, and tightly bind the outside of the carbon fiber mesh, so that the glue on the surface of the carbon fiber mesh is uniform and flat; step 3 , Open the vacuum tank, place a barrel-shaped plastic bag with an open top and a closed bottom in the vacuum tank, and place the baseball bat in the barrel-shaped plastic bag; cover the vacuum tank lid to seal, pressurize, and the pressure is 0.5-0.7Mp a, temperature is 20±2℃, pressurize for 2-3 hours to make the glue preliminarily dry; step 4, open the vacuum tank, take out the baseball bat, uncover the outer barrel-shaped plastic bag, and then remove the telescopic sleeve; step 5, put the The baseball bat in step 4 is placed in a drying room, and dried for 16-18 hours to completely cure the glue; the temperature in the drying room is 80-90°C; in step 6, after taking out the baseball bat, sanding, painting and packaging are performed.
5. the preparation method of high-strength baseball bat according to claim 4, is characterized in that, described glue, glue ratio 1:
1.4。
6 . The method for preparing a high-strength baseball bat according to claim 4 , wherein the telescopic sleeve is a heat-shrinkable sleeve. 7 .
7 . The method for preparing a high-strength baseball bat according to claim 4 , wherein the step 2 adopts an outlet fan to heat the telescopic sleeve. 8 .
8. The preparation method of the high-strength baseball bat according to claim 4, characterized in that, the step 5 drying chamber heating requirements are as follows: from normal temperature, the temperature is increased by 20°C per hour until the temperature is increased to 80-90°C.
Instruction drawings
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