JP2007196922A - Post-processing type fiber burying device and post-processing type fiber burying method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a post-processing type fiber burying method capable of obtaining high repairing strength as compared with usual thermal welding. <P>SOLUTION: A cloth-like fiber material 8 is placed on a broken position 9 on a work piece 7 and the cloth-like fiber material 8 is buried in the work piece 7 while fusing a surface of the work piece 7 by a distal end of a trowel 2 (pressing member) in the heated state. Since the broken position 9 is re-welded and further the fiber material 8 is buried in the broken position 9, original strength or strength higher than it can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a post-processed fiber embedding method capable of reinforcing and repairing a work by post-processing on a work made of a thermoplastic resin, and a post-processed fiber embedding apparatus suitable for the post-processed fiber embedding method.

  Processing technology to reinforce the workpiece using fiber materials includes FRP that impregnates glass fiber or carbon fiber with epoxy resin etc. and cures, and Mykaruta that is cured by impregnating phenolic resin into laminated fabric etc. Etc. are already known.

  However, these techniques are only applied in the workpiece manufacturing process, and cannot be used for reinforcement or repair work on workpieces that have already been completed as products.

  Further, as a technique that can be used for repairing a workpiece made of a thermoplastic resin, as disclosed in Patent Document 1, the broken portion of the workpiece made of a thermoplastic resin is melted and re-welded with an electric iron. A vehicle body repair method has been disclosed that repairs the tearing of the workpiece, fills the part on the workpiece with thinning of the skin with the same kind of thermoplastic resin as necessary, and melts and re-welds it to level the surface. Yes.

  In addition, as an apparatus that can be used in this kind of vehicle body repair method, an electric iron that melts and kneads the work in the tearing part with a tip of a spatula type or knife type, and the final part after re-welding the tearing part Non-Patent Document 1 has already proposed an iron-type electric iron for leveling the surface of a workpiece.

  However, in these conventional techniques, the cross-sectional area of the portion to be re-welded is equal to the thickness of the workpiece, and since this portion is melted and re-welded multiple times, mixing of foreign matter and heating or There are problems such as resin deterioration due to repeated cooling, and it is clear that the work formed from recycled pellets has lower mechanical strength than the work formed from virgin pellets. However, there is a drawback that it is difficult to obtain a strength comparable to the original strength.

JP 2002-67895 A “Moto Maintenance No. 51”, Cat Publishing Co., Ltd., issued February 1, 2004, p32-35, p48

  Accordingly, an object of the present invention is to improve the drawbacks of the prior art and to provide a post-processed fiber embedding method and a post-processed fiber embedding method capable of obtaining a higher reinforcing strength or repair strength than ordinary heat welding. It is an object of the present invention to provide a post-processing type fiber embedding device that can easily carry out the process in a short time.

  The post-processing type fiber embedding method of the present invention achieves the above-mentioned problem by placing a cloth-like fiber material having a heat resistant temperature higher than that of the thermoplastic resin on a workpiece made of a thermoplastic resin, and then in a heated state. The fiber material is pressed into the workpiece by pressing the fiber material against the workpiece from the surface side by the pressing member and pressing the fiber material into the workpiece while melting the surface of the workpiece with the heat of the pressing member. It has the structure characterized by embedding.

Since the fiber material is embedded in the workpiece while the workpiece surface is melted with the pressing member in the heated state, reinforcement or repair by post-processing can be applied to the workpiece made of thermoplastic resin already completed as a product it can.
In addition, as the fiber material, a fiber material having a heat resistance higher than that of a workpiece made of a thermoplastic resin is selectively used, so that the original mechanical and chemical properties of the fiber material are impaired due to overheating of the fiber material. No, it is suitable for reinforcing and repairing workpieces.

  Furthermore, the fiber material may be placed at a tearing position on the workpiece and the fiber material may be embedded in the same manner as described above.

Since the broken part on the workpiece is melted and re-welded, and the fiber material is embedded in the welded part, it is particularly suitable for repairing the broken work.
Since the fiber material is embedded in addition to the re-welding of the fractured part, the initial strength can be obtained by appropriately selecting the fiber material, even if some degradation of the resin due to melting and re-welding is taken into account. Alternatively, it is possible to obtain a higher strength.

  After embedding the fiber material in the work, the surface of the work embedded with the fiber material may be remelted and leveled by a pressing member in a heated state.

  Since the time required for the post-process such as sanding can be shortened, the overall work time can be shortened.

The post-processing type fiber embedding device of the present invention is used when embedding a fiber material into a workpiece made of a thermoplastic resin exclusively by applying the above-described post-processing type fiber embedding method.
A pressing member that presses the cloth-like fiber material and enters the workpiece; and a heater that heats the pressing member. The heater is fitted into the pressing member.

  By incorporating a heater in the pressing member that presses the cloth-like fiber material and enters the workpiece, the thermal efficiency is higher than that of a conventional electric iron, that is, an electric iron having a heater positioned in the axial direction away from the tip of the iron. Improved. As a result, the pressing member can be heated in a short time, and the embedding operation of the cloth-like fiber material can be performed in a short time.

  In addition, it is desirable that at least the tip portion of the pressing member is formed of a metal having a high thermal conductivity, and the other portion of the pressing member is formed of a metal having a high specific heat ratio.

By forming the tip portion of the pressing member with a metal having high thermal conductivity, the heat generated by the heater built in the pressing member can be transmitted to the tip portion of the pressing member in a short time. Moreover, it becomes possible to accumulate | store excessive heat_generation | fever in a press member by forming the other part of a press member with a metal with a high specific heat ratio.
Therefore, the tip of the pressing member can be heated in a short time, and a sudden temperature drop of the pressing member due to the contact between the tip of the pressing member and the workpiece can be prevented. The required time required for the temperature increase is shortened, and the embedding work of the cloth-like fiber material can be performed in a short time.

  In order to obtain a post-processing type fiber embedding device for embedding a cloth-like fiber material in a short time, it has a pressing surface provided with a plurality of protrusions that press the cloth-like fiber material into the workpiece. You may apply the structure provided with the pressing member and the heater which heats this pressing member.

Since a cloth-like fiber material can be pushed into a workpiece in units of planes using a plurality of protrusions provided on the pressing surface of the pressing member, in units of line segments using a pressing member such as a spatula type or a knife type Compared with the case where the cloth-like fiber material is pushed into the work, the cloth-like fiber material can be embedded in a short time.
In addition, during the embedding operation, the thermoplastic resin melted on the surface of the workpiece is pressed between the pressing surface of the pressing member and the non-molten portion of the deep layer of the workpiece, and this pressure causes the thermoplastic resin in the molten state to be clothed. As a result, the cloth-like fiber material exudes to the front side of the cloth-like fiber material, more specifically, to the gap portion formed between the protrusions of the pressing surface of the pressing member. It becomes possible to reliably embed a cloth-like fiber material on the surface of the substrate.

In the post-processing type fiber embedding method of the present invention, since the cloth-like fiber material is embedded in the work while the surface of the work is melted by the heated pressing member, the post-process type fiber embedding method is made of a thermoplastic resin already completed as a product. The workpiece can be reinforced and repaired by post-processing.
In addition, as the fiber material, a fiber material having a heat resistance higher than that of a workpiece made of a thermoplastic resin is selectively used, so that the original mechanical and chemical properties of the fiber material are impaired due to overheating of the fiber material. No, it is suitable for reinforcing and repairing workpieces.

  Furthermore, by placing the cloth-like fiber material on the tearing location on the workpiece and performing the fiber material embedding operation, the tearing location on the workpiece is melted and re-welded. Since the fiber material will be embedded in the tearing point, even if some degradation of the resin due to melting and re-welding is taken into account, by selecting the fiber material appropriately, the initial strength or higher strength can be obtained. Can be obtained.

  In addition, after embedding the fiber material in the work, the surface of the work embedded with the fiber material is remelted by the heated pressing member so that it is leveled flat, so the time required for subsequent processes such as sanding is reduced. It is possible to shorten the work time as a whole.

  Since the post-processing type fiber embedding device of the present invention has a heater built in the pressing member that presses the cloth-like fiber material and enters the workpiece, the pressing member can be heated in a short time, and the cloth-like fiber material Can be embedded in a short time.

  Furthermore, the time required for the initial temperature rise of the tip of the pressing member is formed by forming the tip of the pressing member with a metal having high thermal conductivity and the other part of the pressing member with a metal having a high specific heat ratio. And the time required for re-heating are shortened, so that the embedding work of the cloth-like fiber material can be performed in a shorter time.

Moreover, in the post-processing type fiber embedding device provided with a pressing member having a pressing surface provided with a plurality of protrusions that press the cloth-like fiber material into the workpiece, a plurality of pressing members provided on the pressing surface of the pressing member Since the cloth-like fiber material can be pushed into the workpiece in units of surfaces using the protrusions, the cloth-like fiber material is applied to the workpiece in units of limited line segments using a pressing member such as a spatula or knife. Compared to the case of pushing in, the cloth-like fiber material can be embedded in a short time.
In addition, during the embedding operation, the thermoplastic resin melted on the surface of the workpiece is pressed between the pressing surface of the pressing member and the non-molten portion of the deep layer of the workpiece, and this pressure causes the thermoplastic resin in the molten state to be clothed. The cloth-like fiber material oozes out to the front side of the cloth-like fiber material so as to sew the gaps of the texture of the fiber-like fiber material, so that the cloth-like fiber material can be surely embedded in the surface of the workpiece.

  Next, some embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a simplified perspective view showing an example of an electric iron that can be used as a post-processing type fiber embedding device in a post-processing type fiber embedding method according to an embodiment to which the present invention is applied.

  This electric iron 1 is equivalent to the conventional technique taken up as Non-Patent Document 1 in the background art section, and is an electric iron having a spatula-type iron tip 2. The electric iron 1 includes a spatula-type iron tip 2 having a tapered surface on one end of the tip, a heater 3 that fits and heats the iron tip 2, a grip portion 4 that holds the heater 3, an ON / OFF A power switch 5 for OFF control and a power cord 6 for connecting to an outlet such as indoor wiring are configured.

  Instead of a spatula-type iron tip 2 having a tapered surface on one end, a knife-type iron tip 10 as shown in FIG. 2 (a) or a cross section as shown in FIG. 2 (b) It is also possible to use a uniform spatula-type tip 11 or a spatula-type tip 12 having a tapered surface formed on the four front surfaces as shown in FIG.

  These iron tips 2, 10, 11, and 12 function as pressing members in the post-processing type fiber embedding method of the present embodiment, but the shapes of the iron tips 2, 10, 11, and 12 are all the same. It is already known from the aforementioned non-patent document 1 and the like.

  Next, a thermoplastic resin workpiece that has been torn by embedding a cloth-like fiber material in the workpiece, for example, a workpiece made of a thermoplastic resin such as a cowling of a motorcycle, a vehicle bumper, or a polycontainer is repaired. Taking the case as an example, the post-processing type fiber embedding method of this embodiment will be specifically described.

  At this time, the fiber material used for embedding should be selected to have a heat resistance higher than the thermal deformation temperature of the thermoplastic resin forming the workpiece so that the mechanical and chemical properties are not impaired by heating. . However, the heat deformation temperature mentioned here is a temperature at which the thermoplastic resin softens to such an extent that the cloth-like fiber material can be embedded, and does not necessarily mean the melting point of the thermoplastic resin itself.

  In general, among thermoplastic resins forming a workpiece, ABS resin has a heat deformation temperature of 93 ° C. to 103 ° C., polypropylene has a heat deformation temperature of 57 ° C. to 63 ° C., polypolycarbonate has a heat deformation temperature of 130 ° C. to 138 ° C., nylon The heat deformation temperature of polyethylene is 67 ° C. to 70 ° C., the heat deformation temperature of polyethylene is around 43 ° C., and the melting point (heat resistant temperature) of the polyester fiber among the fiber materials to be embedded is 255 ° C. to 260 ° C. Melting point (heat-resistant temperature) is 215 ° C to 220 ° C, carbonization temperature of aramid fiber (upper limit of heat-resistant temperature) is around 537 ° C (above, synthetic fiber), cotton decomposition temperature (heat-resistant temperature) is around 235 ° C, hemp decomposition Since the temperature (heat-resistant temperature) is around 235 ° C. (above, natural fiber), any combination of these workpieces and fiber materials is possible. As other fiber materials, for example, glass, Kevlar, carbon and the like are suitable.

  In addition, weaving methods for fabric-like fiber materials are those that are less likely to cause inadvertent distortion or thread slippage when a longitudinal or lateral pulling force acts on them. A woven fabric or a woven fabric is considered, but among these, a Russell weave in which warp and weft are fixed to each other is preferable in that distortion, yarn dropout, and the like hardly occur. In addition, with regard to the vertical and horizontal yarns forming the fabric, from the viewpoint of the affinity with the workpiece and the binding force at the time of re-welding, a yarn obtained by twisting fibers rather than a single fiber type such as a tengu thread (fishing line), It is desirable to use a thread with an uneven surface.

  When repairing a workpiece made of a thermoplastic resin that has been torn by embedding a cloth-like fiber material in the workpiece, first, a heat resistance temperature higher than the thermal deformation temperature of the workpiece 7 in accordance with the breaking condition of the workpiece 7 The cloth-like fiber material 8 having the above is cut into an appropriate size. Then, as shown in FIG. 3A, after the butted portions 7a and 7b of the work 7 are brought into contact with each other as shown in FIG. 3A, both are temporarily fixed with an adhesive tape or the like from the back side. In addition, the fiber material 8 is placed on the work 7 so as to straddle the tearing portion 9 of the work 7.

  Next, the power switch 5 of the electric iron 1 is operated to turn on the heater 3, and the tip 2 that functions as a pressing member is heated. As the heating temperature of the tip 2, an intermediate value between the heat deformation temperature of the thermoplastic resin forming the workpiece 7 and the heat resistance temperature of the cloth-like fiber material 8 may be adopted.

  The temperature control of the heater 3 using a thermocouple or a thermostat is already known.

  At this time, as the iron tip of the electric iron 1, the iron tips 10, 11, 12 as shown in FIGS. 2 (a) to 2 (c) are used in addition to the iron tip 2 shown in FIG. Is possible.

  Further, in place of the above-mentioned temporary fixing with the adhesive tape or the like, or in addition to the temporary fixing with the adhesive tape or the like, two or more of the butted portions 7a and 7b of the work 7 are spot-melted with the tip 2 And it is good also as temporary stop by re-welding.

  When the iron tip 2 is sufficiently heated, as shown in FIG. 3 (c), the iron tip 2 is placed at a position where the tip of the iron tip 2 that functions as a pressing member straddles the tearing portion 9 of the work 7. The tip of the iron tip 2 is pressed from the surface side of the cloth-like fiber material 8 toward the work 7, and the surface of the work 7 around the tearing point 9 is melted by the heat of the iron tip 2 to form the cloth-like shape. By pushing the fiber material 8 into the work 7, the cloth-like fiber material 8 is embedded in the work 7. By this embedding work, melting and re-welding of the abutting portions of the broken portions 7a and 7b of the work 7 are also performed in parallel.

  Since it is possible to actually embed with a single pressing operation of the iron tip 2 is a small area limited by the width and thickness of the tip portion of the iron tip 2, that is, substantially in units of line segments, In order to embed the entire fiber material 8, it is necessary to repeatedly execute the same pressing operation as described above while gradually moving the tip position of the tip 2 as shown in FIG.

  In this repetitive work, first, the butt portion of the tearing portions 7a and 7b of the work 7 sandwiching the tearing portion 9 is performed by pressing the iron tip 2 along the tearing portion 9, and thereafter, It is desirable to repeat the pressing operation gradually toward the outside from the position of the tearing point 9.

Finally, when the entire cloth-like fiber material 8 is embedded, a series of operations related to embedding is completed.
FIG. 3D shows a state where the embedding of the cloth-like fiber material 8 is completed and the portion of the tearing portion 9 is re-welded.

  In this way, since the cloth-like fiber material 8 is embedded in parallel with the melting and re-welding of the tearing portion 9, the fiber material is considered even if some deterioration of the resin due to melting and re-welding is taken into consideration. By appropriately selecting the material (mechanical strength) 8, it is possible to obtain the initial strength or higher strength.

  Thereafter, the tip 2 that functions as a pressing member in a heated state is used like a spatula or a pallet knife, and the surface of the work 7 is melted again and re-solidified as shown in FIG. Then, the surface of the work 7 where the cloth-like fiber material 8 is embedded is leveled.

  As a result, the time required for the post-process such as sanding can be shortened, so that the overall work time related to the reinforcement and repair work can be shortened.

  In the case where a part of the rupture portions 7a and 7b around the rupture point 9 is missing, the thinning may occur in the periphery of the rupture point 9. Similarly, it can be easily dealt with by filling the thinned portion of the same type of thermoplastic resin as the workpiece 7, melting and re-welding with the soldering tip 2, and placing it on the workpiece 7.

  When the work 7 is a pure functional component, its appearance is not particularly limited, so that the same processing is performed on the front and back of the work 7 as necessary, and the cloth-like fiber material 8 is embedded on the front and back of the work 7. As a result, the strength after repair is further improved.

  When the work 7 is an exterior product, the cloth-like fiber material 8 is preferably embedded from the back side of the work 7. If the thickness of the workpiece 7 is thick, the tearing portion 9 cannot be completely re-welded only by the operation from the back side, and there is a possibility that some cracks remain on the surface side of the workpiece 7, but in this case, putty It is possible to improve the appearance of the surface side of the workpiece 7 by a normal molding operation such as sanding. At this time, the technique of filling and re-welding the thermoplastic resin may be applied as in the case of dealing with the above-described thinning.

  If the cloth-like fiber material 8 is embedded after an abnormality such as tearing occurs in the work 7, the work is repaired. If the embedding work is performed before the work 7 is abnormal, the reinforcement work is performed. However, the substantial processing procedure is the same in any case.

  Here, other configuration examples of the tip that functions as the pressing member will be described with some specific examples.

  The iron tip 13 shown in FIG. 4A is the same as the iron tip 11 in FIG. 2B in that it is a spatula type iron tip having a uniform rectangular cross section, but a bent portion is formed at the center thereof. The tip 11 of FIG. 2 (b) is the point that the tip 13b of the tip 13 is offset with respect to the base 13c by providing 13a, and the tip 13b is slightly inclined with respect to the base 13c. And the configuration is different.

  FIG. 4B shows an operation method of the tip 13 when the cloth-like fiber material 8 is embedded in the workpiece 7 using the tip 13.

  In this way, the tip portion 13b of the tip 13 is inclined with respect to the base portion 13c so as to preheat the surface of the workpiece 7 on the side surface of the tip portion 13b as shown in FIG. 4B. The embedding operation of the cloth-like fiber material 8 can be performed at the most advanced portion.

  As a result, the time required for the surface of the work 7 to melt after the tip 13 is brought into contact with the cloth-like fiber material 8 can be shortened, which is necessary for embedding the cloth-like fiber material 8. The work time can be shortened.

  The tip 14 shown in FIG. 5 (a) is a spatula-type tip having a uniform cross section, and a sharp protrusion 14a that warps like a tip of a ski on one side of the tip. Is formed.

  The iron tip 14 is used when the cloth-like fiber material 15 cut into a tape shape is embedded in the work 7. In the use, as shown in FIG. 5B, after the tip of the cloth-like fiber material 15 cut into a tape shape is hooked on the protrusion 14a, first, the cloth-like shape cut into a tape shape is used. The tip of the fiber material 15 is embedded in the work 7 to be used as a temporary stopper, and then the operation of pressing each part of the cloth-like fiber material 15 is repeated at the tip of the tip 14 while gradually moving the tip 14 toward the front. The cloth-like fiber material 15 cut into a tape shape is gradually embedded in the surface of the workpiece 7 from the front end side to the other end side.

  Therefore, the cloth-like fiber material 15 cut into a tape shape can be accurately positioned and embedded in the workpiece 7. Further, since it is not necessary to position the cloth-like fiber material 15 cut into a tape shape on the work 7 by supporting it by hand, it is also suitable for an embedding work in a narrow space.

  FIG. 6A is a diagram showing a simplified main part of an example of a dedicated post-processing type fiber embedding device used in the post-processing type fiber embedding method.

  The post-processing type fiber embedding device 16 includes a pressing member 18 for pressing a cloth-like fiber material into a workpiece and a heater for heating the pressing member 18, for example, a rod-shaped ceramic heater 17. The point that the ceramic heater 17 is fitted in the pressing member 18 is completely different from the conventional electric trowel, that is, the post-processing type fiber embedding device that diverts the structure of the prior art as it is.

  By thus fitting the ceramic heater 17 into the pressing member 18 in this way, the heater 3 is placed at a position spaced apart from the conventional electric iron 1 as shown in FIG. Compared with the installed electric iron 1, it becomes possible to improve the thermal efficiency. As a result, the temperature of the pressing member 18 and the time required for heating are shortened, that is, the work of embedding the cloth-like fiber material 8 in the work 7. It is possible to shorten the required time.

  As a structure of the pressing member 18 fitted on the ceramic heater 17, for example, as shown in FIG. 6B, it functions as an actual working part when the cloth-like fiber material 8 is pushed into the workpiece 7. It is desirable that the central portion in the width direction including the leading end portion 18a is formed of a metal having a high heat conductivity such as copper, and the remaining portion 18b is formed of a metal having a high specific heat ratio such as stainless steel.

  In FIG. 6B, the pressing member 18 is formed of a metal having high thermal conductivity including the front end portion and the center portion in the width direction. However, as shown in FIG. 6C, the pressing member Only the tip 18a of 18 may be formed of a metal having a high thermal conductivity, and all other portions except these may be formed of a metal having a high specific heat ratio.

  By applying the configuration shown in FIG. 6B or FIG. 6C, the heat generated by the ceramic heater 17 incorporated in the pressing member 18 is transmitted to the distal end portion 18a of the pressing member 18 in a short time. At the same time, it is possible to accumulate thermal energy due to excessive heat generation from the ceramic heater 17 in the other portion 18b. Therefore, the tip portion 18a of the pressing member 18 can be heated in a short time, and when the heat of the tip portion 18a is transmitted to the workpiece 7 due to the contact between the tip portion 18a of the pressing member 18 and the workpiece 7. The rapid temperature drop of the pressing member 18 which arises can be prevented. That is, the time required for the initial temperature rise of the tip end portion 18a is shortened, and at the same time, there is no sudden temperature drop of the pressing member 18, and the step of re-temperature rise of the tip end portion 18a becomes substantially unnecessary, and cloth-like fibers The embedding operation of the material 8 can be performed in a short time.

  Since the pressing member 18 has a sheath-like structure that is externally fitted to the ceramic heater 17, for example, various shapes having shapes as shown in FIGS. 2 (a), 2 (b), and 2 (c) are available. It is also possible to prepare several pressing members 18 in advance and attach them to the ceramic heater 17 by appropriately replacing them.

  FIG. 7A is a simplified view of another example of a dedicated post-processing fiber embedding device used in the post-processing fiber embedding method.

  This post-processing type fiber embedding device 19 is used to press the cloth-like fiber material 8 into the work 7 in surface units. The conventional electric trowel 1 as shown in FIG. a dedicated post-processing type fiber embedding device 16 as shown in a), that is, a cloth-like fiber material having a length in units of line segments formed at the tips of the iron tips 2, 10, 11, 12 and the pressing member 18. The basic structure is different from that in FIG.

  The post-processing type fiber embedding device 19 includes a pressing member 21 having a pressing surface 20 provided with a plurality of protrusions 27 for pressing the cloth-like fiber material 8 into the work 7 and a rod for heating the pressing member 21. The heater 22, the grip portion 23 that holds the pressing member 21, the power switch 24 provided on the grip portion 23, and a power cord 25 for connecting to an outlet such as indoor wiring.

  Two bar heaters 22 are embedded in parallel inside the pressing member 21, and the temperature of the bar heater 22, that is, finally the pressing surface 20 is provided by a thermostat 26 provided in the vicinity of the bar heater 22. Is maintained at a preset temperature.

  Alternatively, the structure of the pressing member 21, the rod heater 22, the grip portion 23 and the like is followed, and a temperature controller 28 is provided separately from this, and the rod heater 22 is operated by operating a temperature setting switch 29 provided in the temperature controller 28. In other words, the temperature increase target value of the pressing surface 20 may be set arbitrarily. In that case, a temperature detection means such as a thermocouple in place of the thermostat 26 is provided in the immediate vicinity of the bar heater 22, and the temperature rise target value set in the temperature controller 28 and the current temperature of the bar heater 22 detected by the temperature detection means such as the thermocouple. Based on the deviation from the temperature, the electric power supplied from the temperature controller 28 to the bar heater 22 is adjusted so as to eliminate the temperature deviation. The PI control required for achieving the target temperature is well known.

  As the protrusion 27 provided on the pressing surface 20 of the iron type, a simple corrugated protrusion 27a as shown in FIG. 7B, or a protrusion having a flat surface as shown in FIG. 7b, a triangular pyramidal projection 27c as shown in FIG. 7D, a quadrangular pyramidal projection 27d as shown in FIG. 7E, and a rectangular cross section as shown in FIG. 7E. A columnar protrusion 27e having a shape can be used.

  Even when the cloth-like fiber material 8 is embedded in the workpiece 7 by using the post-processing type fiber embedding device 19, first, similarly to the above, first, it is higher than the thermal deformation temperature of the workpiece 7 in accordance with the tearing state of the workpiece 7. A cloth-like fiber material 8 having a heat-resistant temperature is cut into an appropriate size, the cut portions 7a and 7b of the work 7 are brought into contact with each other as shown in FIG. In the stopped state, as shown in FIG. 3B, the fiber material 8 is placed on the work 7 so as to straddle the tearing portion 9 of the work 7.

  Next, the power switch 24 of the post-processing type fiber embedding device 19 is operated to turn on the power to the bar heater 22, the pressing surface 20 of the pressing member 21 is heated, and the surface of the cloth-like fiber material 8 is pressed by the pressing surface 20. The cloth-like fiber material 8 is pushed into the work 7 while being pressed from the side toward the work 7 and the surface of the work 7 around the tearing portion 9 is melted by the heat of the protrusions 27. The fiber material 8 is embedded. At the same time, melting and re-welding of the abutting portions of the broken portions 7a and 7b of the work 7 are also performed.

  The thermoplastic resin melted on the surface of the workpiece 7 is pressed between the pressing surface 20 of the pressing member 21 and the non-molten portion of the deep layer of the workpiece 7, and the thermoplastic resin in the molten state is pressed into cloth-like fibers by this pressure. It exudes to the front side of the cloth-like fiber material 8 so as to sew the gap of the weave of the material 8, more specifically, to the gap portion formed between the numerous protrusions 27 of the pressing surface 20 of the pressing member 21. Therefore, the cloth-like fiber material 8 can be reliably embedded in the surface of the workpiece 7.

  At this time, the temperature of the gap portion formed between the many protrusions 27, that is, the portion of the pressing surface 20 that becomes a valley with respect to the protrusion 27 is also increased to the same level or higher than the protrusion 27. The surface of the work 7 is preheated using the heat radiated from the portion, and the cloth-like fiber material 8 can be embedded by quickly melting the surface of the work 7.

  Unlike the case where the cloth-like fiber material 8 is embedded at the tips of the iron tips 2, 10, 11, 12 or the pressing member 18, the cloth-like fiber material 8 can be pushed into the work 7 in plane units. Therefore, the cloth-like fiber material 8 is embedded as compared with the case where the cloth-like fiber material 8 is pushed into the work 7 in units of limited line segments using the iron tips 2, 10, 11, 12 and the pressing member 18. Can be performed in a short time.

  Further, the post-process type fiber embedding device 19 shown in FIG. 7 (a) or FIG. It can be used in place of the electric iron.

  Since the pressing member 21 of the post-processing type fiber embedding device 19 in which the protrusion 27 is omitted from the pressing surface 20 has a built-in bar heater 22, the post-processing type fiber embedding device 16 described with reference to FIG. As with the conventional iron-type electric iron, that is, it is superior in thermal efficiency and can be heated in a short time compared to the iron-type iron trowel, that is, a heater installed in a position spaced in the axial direction from the iron tip. Therefore, if this is used in the final finishing process of leveling the surface of the work 7 where the cloth-like fiber material 8 is embedded, the entire embedding work and finishing work are combined. The work required time can be greatly reduced.

It is the perspective view which simplified and showed about an example of the electric iron which can be used as a post-processing type fiber embedding apparatus in the post-processing type fiber embedding method of one Embodiment to which this invention is applied. FIG. 2A is a perspective view showing the shape of a tip of the electric iron, FIG. 2A shows a knife-type tip, and FIG. 2B shows a spatula-type tip having a uniform cross section. ) Shows a spatula-type soldering tip with tapered surfaces on the four sides of the tip. FIG. 3A is a conceptual diagram showing a process of embedding a cloth-like fiber material in a workpiece, FIG. 3A shows a setup state before starting an embedding operation, and FIG. 3B shows a state in which the fiber material is placed on the workpiece. FIG. 3C shows the actual embedding process, and FIG. 3D shows the leveling process after the embedding operation is completed. FIG. 4A is a diagram showing a configuration example of another iron tip, and FIG. 4A shows the shape of the iron tip with the tip portion being inclined with respect to the base portion, and FIG. Shows about. FIG. 5A is a diagram showing a configuration example of another iron tip, and FIG. 5A shows the shape of the iron tip having a sharp protrusion formed on one side of the tip, and FIG. Shows about. It is the figure which simplified and showed the principal part about an example of the post-processing type fiber embedding apparatus for exclusive use used with a post-processing type fiber embedding method, and Fig.6 (a) is about the whole structure of a post-processing type fiber embedding apparatus. In addition, in FIG. 6B, the structure of the pressing member in which the central portion in the width direction including the tip portion is formed of a metal having high thermal conductivity and the remaining portion is formed of a metal having a high specific heat ratio is further illustrated. 6 (c) shows a structure of a pressing member in which only the tip portion is formed of a metal having high thermal conductivity and the remaining portion is formed of a metal having a high specific heat ratio. It is the figure which simplified and showed about other examples of the post-processing type fiber embedding device for exclusive use used with a post-processing type fiber embedding method, and in Drawing 7 (a), about the whole structure of a post-processing type fiber embedding device, 7B to 7F show various shapes of protrusions provided on the pressing surface of the pressing member. It is the figure which simplified and showed about another example of the exclusive post-processing type fiber embedding apparatus used with the post-processing type fiber embedding method.

Explanation of symbols

1 Electric iron (post-processing type fiber embedding device)
2 Spatula-type iron tip (pressing member) with a tapered surface on one end
3 Heater 4 Grip part 5 Power switch 6 Power cord 7 Work piece 7a Work piece tearing part 7b Work piece tearing part 8 Cloth-like fiber material 9 Teaching part 10 Knife-type tip (pressing member)
11 Spatula-type tip with a uniform cross section (pressing member)
12 Spatula-type soldering tip (pressing member) with tapered surfaces on the four sides
13 Tip (pressing member) with tip end inclined with respect to base
13a Bent part 13b Tip part 13c Base part 14 Tip (pressing member) having a sharp projection formed on one side of the tip part
14a Protrusion 15 Fabric-like fiber material 16 cut into a tape shape Post-processing type fiber embedding device 17 Ceramic heater
18 Pressing member 18a Tip 18b of pressing member Other part 19 of pressing member Post-processing type fiber embedding device 20 Pressing surface 21 Pressing member 22 Bar heater 23 Grip part 24 Power switch 25 Power cord 26 Thermocouple and thermostat 27 Protrusions 27a, 27b , 27c, 27d, 27e Protrusion 28 Temperature controller 29 Temperature setting switch

Claims (6)

  After placing a cloth-like fiber material having a heat resistance higher than that of the thermoplastic resin on the workpiece made of thermoplastic resin, the fiber material is pressed from the surface side toward the workpiece by a pressing member in a heated state. A post-processing type fiber embedding method, wherein the fiber material is embedded in the work by pressing the fiber material into the work while the surface of the work is melted by the heat of the pressing member.   The post-processing type fiber embedding method according to claim 1, wherein the fiber material is placed at a tearing position on a workpiece.   3. The method according to claim 1, wherein after the fiber material is embedded in the workpiece, the surface of the workpiece embedded with the fiber material is remelted and leveled by a pressing member in a heated state. Post-processing fiber embedding method. A post-processing type fiber embedding device used when a post-processing type fiber embedding method according to any one of claims 1 to 3 is applied and a fiber material is embedded in a workpiece made of a thermoplastic resin. ,
A post-processing type fiber embedding comprising a pressing member that presses a cloth-like fiber material into a workpiece and a heater that heats the pressing member, and the heater is fitted into the pressing member. apparatus.   The post-processing type fiber embedding according to claim 4, wherein at least a tip portion of the pressing member is formed of a metal having high heat conductivity, and the other portion of the pressing member is formed of a metal having a high specific heat ratio. apparatus. A post-processing type fiber embedding device used when a post-processing type fiber embedding method according to any one of claims 1 to 3 is applied and a fiber material is embedded in a workpiece made of a thermoplastic resin. ,
A post-processing type fiber embedding device comprising: a pressing member having a pressing surface provided with a plurality of protrusions for pressing a cloth-like fiber material into a workpiece; and a heater for heating the pressing member.

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