CN1082976A - The manufacture method of thermoplastic plastic composite material baseball bat - Google Patents
The manufacture method of thermoplastic plastic composite material baseball bat Download PDFInfo
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- CN1082976A CN1082976A CN 92110071 CN92110071A CN1082976A CN 1082976 A CN1082976 A CN 1082976A CN 92110071 CN92110071 CN 92110071 CN 92110071 A CN92110071 A CN 92110071A CN 1082976 A CN1082976 A CN 1082976A
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Abstract
A kind of manufacture method of thermoplastic plastic composite material baseball bat, it is to take a high temperature resistant and interior pipe of rubber-like, tube-surface coats one deck thermoplastic plastic substrates layer at least and a long fibre enhancement layer to form a tube with laminated shape exterior layer shell in this, insert this tube in one mould and be heated to the fusing point of thermoplastic, keeping under the state of this temperature, with the mode piecewise that pressure increases progressively gas-pressurized is introduced in this tube, infiltrate with the thermoplastic that forces fusion between each fibre bundle of this long fibre enhancement layer, after abovementioned steps is carried out a scheduled time, cool off this mould, so that the thermoplastic solidifies of fusion, so, this tube can be shaped to a baseball bat according to the shape of die cavity.
Description
The invention relates to baseball bat, particularly about a kind of manufacture method of thermoplastic plastic composite material baseball bat.
The manufacture method such as the United States Patent (USP) the 4th of thermoplastic plastic composite material baseball bat commonly used, 84, No. 745 described, it at first is thermoplastic with the pre-soaked melting of long fibre bundle, be wound in one with predetermined direction then and have on the core of bat shape forming the exterior layer shell of laminated shape, last again this core is taken out and carries out suitable modification can obtain a baseball bat.The method of the laminated shape exterior layer of aforementioned formation shell generally is referred to as fiber and twines method, experience according to actual manufacturing is represented, it is oversize that this kind method for making spends in man-hour of single finished product, moreover, walk around in the journey in the long fibre wrapping, this core must keep proper temperature, so that the thermoplastic that is flooded on it can not solidify.But everybody the temperature of putting is difficult to whole core be consistent, so some long fibre bundle promptly solidifies before winding and can't be adhered together with the fibre bundle of adjacent bed.In this case, can reduce the intensity of this bat.In addition, each laminated only depend on the long fibre wrapping around the time tension force stack together, therefore the laminated number under unit thickness is less, in other words, promptly institutional framework is comparatively loose, this also is the main cause that can't make the high strength baseball bat with this kind method for making.
Therefore, main purpose of the present invention is to provide a kind of manufacture method of thermoplastic plastic composite material baseball bat, and it can reduce the man-hour that single finished product spends.
Another object of the present invention is to provide a kind of manufacture method of thermoplastic plastic composite material baseball bat, it can make each layer of exterior layer shell all closely fit together.
A further object of the present invention is to provide a kind of manufacture method of thermoplastic plastic composite material baseball bat, and it has more laminated number under unit thickness, thereby the intensity of bat is increased.
Therefore, for reaching aforementioned purpose, the manufacture method of thermoplastic plastic composite material baseball bat of the present invention is to be base material with the thermoplastic, with the long fibre material is reinforcing material, and the principal character of this manufacture method is may further comprise the steps: a. takes a high temperature resistant and interior pipe of rubber-like; B. in this, coat one deck thermoplastic plastic substrates layer at least on the tube-surface in regular turn, and a long fibre enhancement layer, to form a tube with laminated shape exterior layer shell; C. this tube is inserted in the die cavity of baseball bat shape of a mould; D. to this mold heated to temperature reach this thermoplastic plastic substrates layer fusing point or more than; E. keeping under the state of aforementioned temperature, gas-pressurized is being introduced in this tube, evenly infiltrating fully between each fibre bundle of each long fibre enhancement layer with the thermoplastic that forces melting with the mode piecewise that pressure increases progressively; F. cool off this mould so that the thermoplastic solidifies of melting, so, this tube can be shaped to a baseball bat according to the shape of this mould die cavity.
Another feature of the manufacture method of thermoplastic plastic composite material baseball bat of the present invention is at first to take one and is made and shape is identical with the baseball bat shape but core that size is less by the material with high thermal expansion coefficient; In this mandrel surface one deck thermoplastic plastic substrates layer of reeling at least, and a long fibre enhancement layer, to form the exterior layer shell of a laminated shape; This core is inserted together with this exterior layer shell in the die cavity of baseball bat shape of a mould; With the temperature that is higher than this thermal plastic substrate layer fusing point at least to this mold heated, thereby force the thermoplastic of melting to infiltrate equably between each fibre bundle of this long fibre enhancement layer by the expansion tension of this core; After abovementioned steps is carried out a scheduled time, cool off this mould and take out this core, can obtain a baseball bat.
By as can be known aforementioned, in method for making of the present invention, each of baseball bat is laminated can be made in advance, and then manages or mandrel surface in being stacked and placed on, and therefore, can lack than the winding method man-hour of single finished product naturally.Moreover it is with whole again heating after each laminated stacked finishing, so the temperature at each position can be consistent, and is to force each layer closely to fit together with interior pressure or external pressure in heating, thus on intensity certainly than good with the winding method person of making.
Enumerate some preferred embodiments of the present invention and conjunction with figs. below and be further described, wherein:
Fig. 1 is for being wound in thermoplastic plastic substrates layer and long fibre enhancement layer in regular turn the schematic diagram of tube-surface in a preferred embodiment of the present invention.
Fig. 2 inserts the interior schematic diagram of mould for the tube that will have laminated shape exterior layer shell in a preferred embodiment of the present invention.
The baseball bat stereogram of Fig. 3 for making according to a preferred embodiment of the present invention.
Fig. 4 overlaps the stereogram that is through at interior tube-surface in regular turn for knitting pipe with thermoplastic light wall pipe layer and long fibre in another preferred embodiment of the present invention.
Fig. 5 for the present invention again in the preferred embodiment its each thermoplastic plastic substrates layer be the schematic diagram of reeling and forming with band-like film.
Fig. 6 has the schematic diagram of meshy surface for its each thermoplastic plastic substrates layer in the another preferred embodiment of the present invention.
Fig. 7 is wound in schematic diagram on the mandrel surface in regular turn for the present invention will be the flat thermoplastic film who stretches shape and long fibre thin plate again in another preferred embodiment.
Fig. 8 is for inserting the exterior layer shell of core and laminated shape in another preferred embodiment of the present invention the cross section view in the mould.
Referring to figs. 1 to Fig. 6, the manufacture method of thermoplastic plastic composite material baseball bat of the present invention, at first be to take an interior pipe (10) of making by the high-temperature resistance plastice material, pipe (10) surface is reeled one first in regular turn in this then, second, and the 3rd thermoplastic plastic substrates layer (11), (13), (15), and one first, the second long fibre enhancement layer (12), (14), when reeling, can in this, manage and cover a metallic rod (not shown) in (10) so that operation, this thermoplastic plastic substrates layer (11) respectively, (13), (15) available polyamide (as nylon) is made, and this long fibre enhancement layer (12) respectively, (14) useable glass fiber then, carbon fiber or boron fibre are made, and so-called long fibre is meant that length is at 0.1～10m or above fibre bundle.Respectively this long fibre enhancement layer (12), (14) are on the flat thermoplastic film (11) who stretches shape, (13) can earlier it being twined in the actual manufacturing to be affixed on, and then carry out coiling work.Perhaps, available heat thermoplastic plastic light wall pipe (21), (23), (25) and long fibre are knitted pipe (22), (24) and are overlapped in regular turn and be through at pipe (10) surface (as shown in Figure 4) in this.Perhaps, also can take that thermoplastic plastics belt (26) is wound in this pipe (10) with it and respectively on the surface of this long fibre enhancement layer (32), (35) and form thermoplastic plastic substrates layer (31), (33) and (35).In addition, be easy to melting, also can make its surface be netted (shown in (41) among Fig. 6, (43) and (45)) in order to make each thermoplastic plastic substrates layer.
When this thermoplastic plastic substrates layer (11) respectively, (13), (15) and respectively this long fibre enhancement layer (12), (14) are wound in regular turn and promptly form one behind the pipe (10) in this and have the tube (50) that thickness is about 0.1～0.5 inch the exterior layer shell (16) that is laminated shape.Then this tube (50) is placed one to have in the mould (52) of baseball bat shape die cavity (51), after this mould (52) closure, this mould (52) is heated to 220 ℃～240 ℃, at this moment, respectively this thermoplastic plastic substrates layer (11), (13), (15) become liquid with melting, at the same time, be 1-3kg/cm with pressure
2The first road gas-pressurized introduce between each fibre bundle that forces the thermoplastic that is in a liquid state to infiltrate respectively this long fibre enhancement layer (12), (14) equably in this tube (50).(it is different and change that this time is looked material) are 5-10kg/cm with pressure again after aforementioned pressurization steps is carried out about 5 minutes
2The second road gas-pressurized introduce in this tube (50), force the thermoplastic that is in a liquid state to infiltrate more completely between each long fibre bundle on the one hand, this exterior layer shell (16) can more closely be fitted on the cave wall of this die cavity (51).In the above description, gas-pressurized is to introduce in this tube (50) with two segmented modes, and its hop count also can optionally increase and decrease certainly, and for example then can introduce pressure again in the bigger occasion of this exterior layer shell (50) thickness is 10～15kg/cm
2The 3rd road gas-pressurized.
After aforementioned pressurization, heating steps carry out a period of time, begin to cool down this mould (52), at this moment, permeate in the thermoplastic of each long fibre interfascicular and promptly can solidify, treat that it solidifies fully, open this mould (52) and can obtain a baseball bat (60).
Again with reference to figure 7 and Fig. 8, another embodiment of method for making of the present invention takes a core (70) of being made by high density polyethylene (HDPE) (H.D.P.E) or teflon materials such as (P.T.F.E) earlier, this core (70) is identical with baseball bat in shape, but size is less, and then with each thermoplastic plastic substrates layer (71), (73), (75), and long fibre enhancement layer (72), (74) are wound in regular turn on this core (70) surface and form the exterior layer shell (80) of a laminated shape.
After this exterior layer shell (80) is finished, this core (70) and this exterior layer shell (80) are inserted one together have in the mould (84) of baseball bat shape die cavity (82).Then this mould (84) is heated to 220 ℃～240 ℃, respectively this thermoplastic plastic substrates layer (71), (73) and (75) promptly can melting become liquid this moment, and this core (70) then makes each long fibre bundle coat the thermoplastic of one deck melting because of the thermoplastic that the relation of expanded by heating will be oppressed respectively this long fibre enhancement layer (72), (74) and melting equably.After aforementioned step is carried out a period of time, cool off this mould (84), this exterior layer shell (80) promptly can form a baseball bat body according to the shape of this die cavity (82), and this core (70) then can be very easy to it is separated with this baseball bat body for reusing because of contraction is original state.
By as can be known aforementioned, its each thermoplastic matrix layer of method for making of the present invention and each long fibre enhancement layer all can be made in advance, take when desiring moulding stick bat body again, and therefore single finished product required man-hour must be than lacking made from the winding method.Moreover, method for making of the present invention is to introduce inside and outside pressure simultaneously to the mold integral heating and in heating, therefore not only can make each position of the exterior layer shell of laminated shape keep identical temperature, and its each layer is fit together closely, so the shortcoming of winding method commonly used can improve.
Claims (10)
1, a kind of manufacture method of thermoplastic plastic composite material baseball bat, it is to be base material with the thermoplastic, is reinforcing material with the long fibre material, this manufacture method is characterised in that and comprises the steps:
A. take an interior pipe of making by high temperature resistant and rubber-like material;
B. reel in regular turn on the surface of pipe in this an one deck thermoplastic plastic substrates layer and a long fibre enhancement layer at least are to form a tube with laminated shape exterior layer shell;
C. this tube is inserted in the die cavity of baseball bat shape of a mould;
D. this mold heated to temperature is reached this layer thermoplastic film fusing point or more than;
E. keeping under the state of aforementioned temperature, gas-pressurized is being introduced in this tube, infiltrating with the thermoplastic that forces this melting between each fibre bundle of this long fibre enhancement layer with the mode piecewise that pressure increases progressively;
F. after abovementioned steps is carried out a scheduled time, cool off this mould, so that infiltrate the thermoplastic solidifies between this each fibre bundle of long fibre enhancement layer, this tube promptly is shaped to a baseball bat according to the shape of this mould die cavity.
2, a kind of manufacture method of thermoplastic plastic composite material baseball bat, it is to be base material with the thermoplastic, is reinforcing material with the long fibre material, this manufacture method is characterised in that and comprises the steps:
A. taking one is made and shape is identical with baseball bat but core that size is less by the material with high thermal expansion coefficient;
B. in this mandrel surface one deck thermoplastic plastic substrates layer of reeling at least, and one deck long fibre enhancement layer and form the exterior layer shell of a laminated shape;
C. this core is inserted together with this exterior layer shell in the die cavity of baseball bat shape of a mould;
D. with this mold heated to predetermined temperature, so that this thermoplastic plastic substrates layer is the melting state and makes this core expanded by heating and force the thermoplastic of this melting to infiltrate between each fibre bundle of this long fibre enhancement layer;
E. after abovementioned steps is carried out a scheduled time, cool off this mould, so that the thermoplastic solidifies of this melting and this core are reduced to original volume, open mould this moment, takes out this core and can obtain a baseball bat.
3, baseball bat manufacture method according to claim 1, wherein the thermoplastic plastic substrates layer of b step and long fibre enhancement layer are to take one at least to be the flat thermoplastic film who stretches shape, then the long fibre bundle is twined being affixed on this film and forming a thin plate with predetermined orientation, again the two is wound on the surface of pipe in this simultaneously at last.
4, baseball bat manufacture method according to claim 2, wherein the thermoplastic plastic substrates layer of b step and long fibre enhancement layer are to take at least one flat thermoplastic film who stretches shape that is, then the long fibre bundle is twined being affixed on this film and forming a thin plate with predetermined orientation, again the two is wound on the surface of this core simultaneously at last.
5, baseball bat manufacture method according to claim 1, wherein the b step is to knit pipe with at least one thermoplastic light wall pipe and a long fibre to overlap in regular turn on the surface that is through at pipe in this.
6, baseball bat manufacture method according to claim 2, wherein the b step is with a thermoplastic light wall pipe, and long fibre is knitted pipe and overlapped in regular turn and be through on this mandrel surface.
7, baseball bat manufacture method according to claim 1, wherein the thermoplastic plastic substrates layer in the b step forms with the thermoplastic tape wrapping.
8, baseball bat manufacture method according to claim 2, wherein the thermoplastic plastic substrates layer in the b step forms with the thermoplastic tape wrapping.
9, baseball bat manufacture method according to claim 1, wherein the thermoplastic plastic substrates layer in the b step has netted surface.
10, baseball bat manufacture method according to claim 2, wherein the thermoplastic plastic substrates layer in the b step has netted surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110071 CN1082976A (en) | 1992-08-24 | 1992-08-24 | The manufacture method of thermoplastic plastic composite material baseball bat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110071 CN1082976A (en) | 1992-08-24 | 1992-08-24 | The manufacture method of thermoplastic plastic composite material baseball bat |
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| CN1082976A true CN1082976A (en) | 1994-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 92110071 Pending CN1082976A (en) | 1992-08-24 | 1992-08-24 | The manufacture method of thermoplastic plastic composite material baseball bat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102596525A (en) * | 2009-08-24 | 2012-07-18 | 戴维·斯特内曼 | Polymer material reinforced by long fibers and method and system for the production of said polymer material |
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1992
- 1992-08-24 CN CN 92110071 patent/CN1082976A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102596525A (en) * | 2009-08-24 | 2012-07-18 | 戴维·斯特内曼 | Polymer material reinforced by long fibers and method and system for the production of said polymer material |
| CN102596525B (en) * | 2009-08-24 | 2015-07-08 | 戴维·斯特内曼 | Polymer material reinforced by long fibers and method and device for the production of said polymer material |
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