CN102302845B

CN102302845B - Baseball bat structure and manufacturing method thereof

Info

Publication number: CN102302845B
Application number: CN2011102344113A
Authority: CN
Inventors: 谢献浩
Original assignee: Xiamen Dongbang Arts & Crafts Co Ltd
Current assignee: Xiamen Dongbang Arts & Crafts Co Ltd
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2013-10-23
Anticipated expiration: 2031-08-16
Also published as: CN102302845A

Abstract

The invention discloses a baseball bat structure and a manufacturing method thereof. The baseball bat comprises a hitting part, a holding part and a transitional part for connecting the hitting part and the holding part, wherein the baseball bat further comprises a hard rod member which is located in the center of the baseball bat; the hitting part of the baseball bat is made of a wooden material, and an axial through hole is formed in the center of the hitting part; one end of the hard rod member extends into the through hole of the hitting part; the transitional part of the baseball bat andthe holding part are made from PU (polyurethane) material by injection and foaming; the hard rod member is wrapped in the centers of the transitional part and the holding part and simultaneously the through hole of the hitting part is filled with PU material. Accordingly, the baseball bat is superior in impact resistance, has a longer service life and less consumption of wood plates, and meets the requirements for low carbon and environmental friendliness. The PU material has features of wide adjustable ranges in hardness, density, elasticity and extensibility and good shock-absorbing property, which allows the weight of the baseball bat to be adjusted more easily during the production process and facilitates the production of high-quality and light-weight baseball bats.

Description

A kind of baseball bat structure and preparation method thereof

Technical field

The relevant a kind of bat of the present invention refers to a kind of baseball bat structure and preparation method thereof especially.

Background technology

Baseball is that a kind of blackjack ball is main feature, the ball game project that communality, antagonism are very strong; It carries out comparatively extensive in the world, affects greatlyr, is described as the combination of wisdom " sports with "; Particularly in vogue in the U.S., Japan, be called as " national ball game ".

The bat that is used for batting is cylindrical, cooperate shown in Figure 1, it is by the thicker driving part 1 ' in front portion, and the connecting portion 3 ' that thinner grip part 2 ', rear portion reaches by driving part 1 ' 2 ' transition to the grip part consists of, and traditional bat processes mainly with timber, then the weight of whole bat is heavier, for the striker, if not larger arm strength, can be slack-off because of the waist speed of gyration when swinging, the momentum of order batting diminishes, and then ball can't fly farly; In addition, be subjected to the limited impact of timber resources, bat timber cost is high.Therefore the bat that aluminium matter just occurred, but this bat but can't compare favourably with wooden bats in feel and the texture of square stance, the injury of the simultaneously harder square stance meeting of bat arm is larger, and this case just produces thus.

Summary of the invention

The purpose of this invention is to provide a kind of baseball bat structure and preparation method thereof, it has the effect of batting soft handle, light, long service life and to save timber cost.

For achieving the above object, solution of the present invention is:

A kind of baseball bat structure, this bat comprise the transition part of driving part, grip part and connection driving part and grip part, wherein: comprise that also one is positioned at the hard rod member at bat center; The driving part of this bat is that wood materials is made, and there is axial through hole at the tool center; One end of described hard rod member is to stretch the through hole that places driving part; The transition part of bat and grip part are formed by the perfusion foaming of PU material, and the hard rod member is to be coated on the transition part of bat and the center of grip part, meanwhile in the through hole of driving part by the PU Material Filling.

Described hard rod member is the carbon fiber reinforce plastic hollow pipe.

The length of described hard rod member is greater than three's sum of grip part, transition part and 1/2nd length driving parts.

Be formed with screw thread on the described bat driving part through hole inwall.

A kind of preparation method of bat, concrete steps are:

Step 1, batting section are made: get sheet material through cut, jigsaw cuts into pole after forming crude green body, gets out through hole on the pole central shaft;

Step 2, hard rod member are made: get the carbon fiber reinforce plastic hollow pipe, block into the length greater than three's sum of grip part, transition part and 1/2nd length driving parts;

Step 3, whole bat are made: the hard rod member of step 2 is installed on the through hole place of step 1, the two is placed mould to pour into PU material moulding depanning again and just become whole bat.

Attack on the described step 1 pole through hole and establish screw thread.

The external diameter of the carbon fiber reinforce plastic hollow pipe of described step 2 is that 20mm, internal diameter are 12mm, wall thickness 4mm, and it is blocked into 26 " long, tightly fill in round log at two of pipe.

Bat after described step 3 moulding carries out the frosted spray process again to be processed.

After adopting such scheme, PU of the present invention pours into integrated baseball bat and has following advantage:

1, PU pours into one-body molded bat, more anti-strike, and the life-span is longer.

2, it is less that PU pours into the used wood plank of one-body molded bat; More can embody low-carbon (LC), environmental requirement.

3, PU material itself has the characteristics such as hardness, density, elasticity and extensibility adjustable extent are wide, shock-absorbing performance is good, makes the weight of easier adjustment bat in the production process; Be conducive to produce bat more of fine quality, light.

Description of drawings

Fig. 1 is the overall appearance figure of traditional baseball bat;

Fig. 2 is baseball structure cutaway view of the present invention.

The specific embodiment

Cooperate shown in Figure 2ly, the present invention has disclosed a kind of baseball bat structure and preparation method thereof, and this bat comprises driving part 1, grip part 2 and connects the transition part 3 of driving part 1 and grip part 2, and a hard rod member 4;

The driving part 1 of described bat is made for wood materials, and there is axial through hole 11 at the tool center;

Described hard rod member 4 adopts the carbon fiber reinforce plastic hollow pipe, and the one end is to stretch the through hole 11 that places driving part, and the length of this hard rod member 4 is greater than three's sum of grip part 1,

transition part

3 and 1/2nd length driving parts 1;

The transition part 2 of described bat is to be formed by PU material perfusion foaming with grip part 3, and hard rod member 4 is to be coated on the transition part 2 of bat and the center of grip part 3, meanwhile in the through hole 11 of driving part 1 by the PU Material Filling; For making PU material and through hole 11 in conjunction with more firm, be formed with screw thread 12 at bat driving part 1 through hole 11 inwalls.

The concrete manufacturing process of this baseball is:

Raw material: North America maple plate, carbon fiber reinforce plastic pipe etc.

Step 1, batting section make:

Sheet material---sheet material---crude green body----tapping is stand-by for pole---boring penetrates---,

Sheet material cut into take length is respectively 29 " * 1 " * 1 " as main plurality of specifications sheet material, be combined into 29 " lumps of wood rod crude green body of * 70mm*70mm, it is the pole of 68mm that car becomes diameter, and cut into two sections each 14 " pole;

With the central point of two of poles, with ∮ 25mm bit bore, until whole pole penetrates, every pole is chosen a direction hole tapping 4 wantonly respectively " long, use when treating the PU perfusion.

Step 2, hard rod member are made:

The carbon fiber reinforce plastic hollow pipe: external diameter 20mm, internal diameter 12mm, wall thickness 4mm, it is blocked into 26 " long, tightly fill in round log at two of pipe; Carry out the perfusion centre bore, use when treating the PU perfusion.

Step 3, whole bat are made: the PU perfusion is one-body molded

1, raw material: PU etc.

2, make flow process and explanation:

---------depanning becomes the bat crude green body---by customer requirement moulding---frosted spraying----finished product packing to shake mould to pour into the PU material in the assembling of pole, carbon fiber reinforce plastic hollow pipe.

Illustrate: in the bat aluminium bar that is heated to regulation mould temperature, quickly and accurately ready pole, the requirement in accordance with regulations of carbon fiber reinforce plastic hollow pipe in the

step

1,2 are assembled, ratio in accordance with regulations, weight pour into the PU raw material in the aluminum dipping form, shake rapidly mould, allow the PU raw material be attached to equably foaming in aluminum dipping form, the pole, depanning becomes the bat crude green body after the slaking, and is stand-by.

Bat crude green body after a few days slaking by the customer requirement moulding, finishes to be PU and to pour into one-body molded bat through operations such as frosted, spraying, sign paper.

In sum, PU of the present invention pours into the advantage of one-body molded baseball bat:

Piecing together maple, maple with common bamboo pieces together the maple bat and compares PU and pour into one-body molded baseball bat following advantage is arranged:

1, test through repeatedly having a try, the result shows that PU pours into one-body molded bat, more anti-strike, and the life-span is longer.

3, PU material itself has the characteristics such as hardness, density, elasticity and extensibility adjustable extent are wide, shock-absorbing performance is good, makes the weight of easier adjustment bat in the production process, is conducive to produce bat more of fine quality, light.

Claims

1. baseball bat structure, this bat comprise driving part, grip part and connect the transition part of driving part and grip part, it is characterized in that: comprise that also one is positioned at the hard rod member at bat center; The driving part of this bat is that wood materials is made, and there is axial through hole at the tool center; One end of described hard rod member is to stretch the through hole that places driving part; The transition part of bat and grip part are formed by the perfusion foaming of PU material, and the hard rod member is to be coated on the transition part of bat and the center of grip part, meanwhile in the through hole of driving part by the PU Material Filling; Described hard rod member is the carbon fiber reinforce plastic hollow pipe.

2. a kind of baseball bat structure as claimed in claim 1, it is characterized in that: the length of hard rod member is greater than three's sum of grip part, transition part and 1/2nd length driving parts.

3. a kind of baseball bat structure as claimed in claim 1 is characterized in that: be formed with screw thread on the bat driving part through hole inwall.

4. the preparation method of a bat, concrete steps are:

5. the preparation method of a kind of bat as claimed in claim 4 is characterized in that: attack on the step 1 pole through hole and establish screw thread.

6. the preparation method of a kind of bat as claimed in claim 4, it is characterized in that: the external diameter of the carbon fiber reinforce plastic hollow pipe of step 2 is that 20mm, internal diameter are 12mm, wall thickness 4mm, and it is blocked into 26 " long, tightly fill in round log at two of pipe.

7. the preparation method of a kind of bat as claimed in claim 4 is characterized in that: the bat after step 3 moulding carries out the frosted spray process again to be processed.