JP5037296B2 - Thread cutting mechanism in veneer veneer reeling device - Google Patents

Description

  The present invention relates to a yarn cutting mechanism in a veneer single plate reeling device.

Conventionally, as disclosed in, for example, Patent Document 1 and Patent Document 2, a supply nozzle having a through hole (corresponding to an air blowing hole in the present invention) through which a wire and compressed air smoothly flow (in the present invention) Veneer single plate on the outer periphery of the take-up shaft via the wire after the start end of the wire is blown at the start and the start end of the wire is engaged with the outer periphery of the take-up shaft in advance. A veneer veneer reeling device for winding a veneer veneer together with a wire is known, and a practical machine has already been used in this field. Specific examples of the wire include veneer Yarn made of chemical fiber or the like is most practical in terms of adaptability to a single plate, economy as a consumable, and the like.
JP 2002-28903 A Japanese Patent Laid-Open No. 2002-187109

  Thus, in this type of reeling device, it is necessary to cut the wire each time the reeling process is completed. When the yarn is used as the wire, as disclosed in the above-mentioned patent documents. A cutting method is often used in which an electric heater is provided in the middle part of the supply nozzle constituting the main part of the yarn supply mechanism, and the electric heater is intermittently heated when desired to burn off the yarn. Such a cutting method has a weak point that lacks a quick response to cutting, and also has a difficulty in durability of the electric heater itself and electric devices used for intermittent connection of the electric heater.

  On the other hand, in the fiber-related technical fields of different industries, there are many examples of cutting yarns using scissors-like cutting tools and knives, but scissors-like cutting tools require a relatively large installation space. Therefore, it is unsuitable for the yarn cutting mechanism in the reeling device, and the knife has a weak point that lacks certainty of cutting.

  The present invention was developed to provide an effective thread cutting mechanism that wipes out the weaknesses and difficulties of the known cutting forms. Specifically, as described above, a veneer veneer is used as a thread. A yarn cutting mechanism in a veneer single plate reeling device that winds together, and includes a yarn and compressed air circulation hole and a sliding hole that slidably accommodates an inner blade. An outer blade fixed in the middle of the air pipe, and a guide hole for thread and compressed air, in a state of being interrupted in the middle of the air hole of the air pipe, and slid into the outer blade. And at least a reciprocating member that reciprocally moves the inner blade relative to the outer blade when desired. A flow hole having the same thickness as the hole is provided in the same direction as the air blowing hole of the air blowing pipe, and at least the portion where the guide hole is present is provided. The inner blade has a guide hole having the same thickness as the flow hole of the outer blade. The reciprocating member is provided in the same direction as the flow hole of the blade, and the reciprocating member is connected to the guide hole of the inner blade and the outer blade from the normal position where the guide hole of the inner blade and the flow hole of the outer blade are connected in series. A yarn cutting mechanism in a veneer single plate reeling device is proposed in which the inner cutter is reciprocated each time only to a section to a cutting position where the flow hole does not overlap at all (Claim 1). .

  Further, as a more specific structure, the corner facing the inner blade on the inlet side of the outer blade circulation hole, or the corner on the inlet or outlet side of the inner blade guide hole, or the outer blade 2. The veneer according to claim 1, wherein the veneer is appropriately chamfered at any one of the corners facing the inner blade on the outlet side of the circulation hole and the four corners for convenience. The cross-sectional shapes of the yarn cutting mechanism in the single-plate reeling device (Claim 2), the air feeding hole of the air feeding tube, the flow hole of the outer blade, and the guide hole of the inner blade are all circular. The yarn cutting mechanism (Claim 3) in the veneer single plate reeling device according to Claim 1 or Claim 2, and the cross-sectional shape of the outer cutter sliding hole and inner cutter are both circular. A yarn cutting mechanism (claim 4) in a veneer single plate reeling device according to claim 1 or claim 2 or claim 3 4. A thread cutting mechanism in a veneer single plate reeling device according to claim 1, wherein the outer cross-sectional shape of the sliding hole of the outer blade and the outer shape of the inner blade are both rectangular. Claim 5) is proposed.

  According to the yarn cutting mechanism of the first aspect, the yarn can be cut quickly and accurately by reciprocating the inner blade fitted inside the outer blade relative to the outer blade. It is possible, and the inner blade and the outer blade only reciprocally slide, so that the durability of the member is also high, and only a relatively small installation space is required, so it is suitable for the reeling device. It is.

  In the meantime, according to the yarn cutting mechanism according to the first aspect, the yarn is cut at two locations on the inlet side and the outlet side of the guide hole of the inner blade, and the length is the same as the length of the guide hole of the inner blade. However, as shown in claim 2, an appropriate shape is formed at any one of the four corners of the outer blade flow hole or the inner blade guide hole. If chamfering is performed, cutting of the yarn is avoided at the chamfered portion, and yarn waste is not generated.

  Further, in order to smoothly distribute the yarn and the compressed air, as shown in claim 3, the cross-sectional shapes of the air supply hole of the air supply pipe, the flow hole of the outer blade, and the guide hole of the inner blade are all circular. However, the cross-sectional shape of each hole is not necessarily limited to a circular shape. In short, any hole that allows a thread and compressed air to flow smoothly is sufficient.

  Further, regarding the cross-sectional shapes of the outer hole sliding hole and the inner blade outer shape, the shapes shown in claims 4 and 5 can be cited as typical shapes, and each has the characteristics described later. The shape is not limited to a simple cross-sectional shape. In short, a shape that allows the outer blade and the inner blade to be engaged with each other at least in a portion where the guide hole of the inner blade exists is sufficient.

  Hereinafter, the present invention will be described in more detail based on an example of the embodiment illustrated in the drawings. Since the structure of the reeling device itself is already known, the description of the structure of the reeling device is relatively simplified. In addition, when a mechanism / member having the same structure as the mechanism / member of the embodiment already described is used in an embodiment described later, the same reference numeral as that of the embodiment described above is attached. Thus, a detailed description that overlaps is omitted. Further, the illustrated embodiment of the yarn cutting mechanism shows a representative form, and the structure of the yarn cutting mechanism according to the present invention is not limited to the form illustrated in the drawings, and is necessary. The design can be changed as appropriate.

  FIG. 1 is a schematic side view of a reeling apparatus having a yarn cutting mechanism according to the present invention, and FIG. 2 is a partially broken schematic side view of the yarn supply mechanism illustrated in FIG. 3 is a partially broken plane schematic explanatory view of the yarn supply mechanism illustrated in FIG. 1, FIG. 4 is a front schematic explanatory view of the yarn supply mechanism illustrated in FIG. 1, and FIG. It is perspective explanatory drawing of the outer blade and the inner blade which comprise a part of thread | yarn cutting | disconnection mechanism illustrated in FIG. In the figure, reference numeral 1 denotes a conveyor having a plurality of belts 1a arranged in parallel at appropriate intervals, a pulley 1b over which the belt 1a is stretched, a drive shaft 1c fitted with the pulley 1b, and the like. A drive source (not shown) such as a servo motor is obtained and driven at a speed synchronized with a preceding veneer race (not shown), for example, to convey the veneer single plate 11 in the direction indicated by the arrow.

  2 is a touch having an appropriate number of grooves 2a in which a belt 1a of the conveyor 1 and an air feed pipe 4a of a yarn supplying mechanism 4 described later can be separately (or at least partly) intervened. It is a roll that is driven at the same time as the conveying conveyor 1 by the same driving source as that of the conveying conveyor 1 or a driving source (not shown) and is rotated at a speed synchronized with the conveying conveyor 1 and directly on the winding shaft 3 described later. The rotation is applied to the target (at the start of the winding process) or indirectly (at a time other than the start). If necessary, it is also effective to apply rubber coating or the like to the outer peripheral portion of the touch roll 2 as shown in the illustrated embodiment so as to impart elasticity and improve frictional force.

  3 is a freely rotatable winding shaft, and is provided so as to be able to move up and down above the touch roll 2. The rotary action of the touch roll 2 is mainly obtained and rotated in the direction of the arrow shown in the drawing. As shown, the veneer single plate 11 is sequentially wound together with the yarn 9. Although not shown in the drawing, a winding roll raising / lowering mechanism having a bearing box, a lifting screw, a screw drive source, and the like is detachably attached to the winding spindle 3 to perform the winding process when the winding roll 3 is wound. It is effective to adjust the contact strength against the left and right automatically (or manually) because it can improve the winding posture of the wound ball, but simply increasing the diameter of the wound ball Along with this, there is no problem even if it is configured to follow up.

  Reference numeral 4 denotes an air feed tube 4a having an air feed hole 4b, a notch 4c, a compressed air supply pipe 4d, an outer blade accommodating groove 4e, a compressed air supply hole 4f, a washer fitting groove 4g, and the like. A thread supply mechanism having a thread cutting mechanism 5 that is connected to an appropriate number of two or more connecting rods 6 described later at appropriate intervals, and a starting position indicated by a solid line in FIG. It is provided so as to be able to move back and forth intermittently between the operation position indicated by the dotted line, and when necessary, supplies the yarn 9 to the periphery of the winding shaft 3 and at the desired time (at the end of the winding process) The yarn 9 is cut and the supply is stopped.

  More specifically, the air pipe 4a is provided with a cut portion 4c having an appropriate depth, a housing groove 4e for an outer blade, and a fitting groove 4g for a washer, and a groove for the touch roll 2 in the body portion of the substantially rocket-shaped main body. 2a is provided in the core part extending from the tip part intervening in 2a to the notch 4c, and the air feeding hole 4b through which the thread 9 and the compressed air smoothly flow is further provided in the core part extending from the supply pipe 4d to the notch 4c. Each of the supply holes 4f is provided, and at the start of the winding process, compressed air supplied via the supply pipe 4d is sprayed from the supply hole 4f to the air blowing hole 4b and supplied via the cut 4c. While discharging the yarn 9 from the tip portion, during the winding process, the supply of compressed air is stopped and only the yarn 9 is pulled out from the tip portion.

  On the other hand, the yarn cutting mechanism 5 includes a flow hole 12a having the same thickness as the air blowing hole 4b of the air feeding pipe in the same direction as the air feeding hole 4b of the air feeding pipe, and an inner blade described later. The sliding hole 12b having a circular cross section that accommodates the entire circumference 13 without gaps is provided in a direction intersecting with the air blowing hole 4b of the air feeding pipe, and is perfectly accommodated in the air receiving groove 4e of the air feeding pipe. The outer blade 12 and the guide hole 13a having the same thickness as the outer blade circulation hole 12a are provided in the same direction as the outer blade circulation hole 12a, and there is no gap in the outer blade sliding hole 12b. A cylindrical inner blade 13 slidably fitted, a piston rod non-rotating fluid cylinder 14 used as a reciprocating member for reciprocating the inner blade 13, the air feed pipe 4 a and the outer blade 12. In addition to the receiving hole 15a for tightly receiving the piston rod and the inner blade 13 of the fluid cylinder 14 Each has a through hole 15b that allows entry, and a hook-like fixing member 15 that allows the fluid cylinder 14 to be fixed, and a control member that controls the operation of the fluid cylinder 14 manually or automatically (not shown). The inner cutter 13 is reciprocally moved relative to the outer cutter 12 via the fluid cylinder 14 when desired, so that the flow hole 12a of the outer cutter and the guide hole 13a of the inner cutter are formed. The thread 9 is cut at the boundary. Incidentally, 12c is an oil supply hole, and it is sufficient if it is provided as necessary. Even if it is not provided, for example, the lubricating oil can be supplied directly to the sliding hole 12b via the through hole 15b. .

  Reference numeral 6 denotes a connecting rod for connecting the plurality of yarn supply mechanisms 4 in parallel via a washer 6a, and obtains the operation of the fluid cylinder 7 and the fluid cylinder 10 to be described later. 4 is intermittently moved only in the interval between the standby position indicated by the solid line and the operating position indicated by the dotted line.

  A fluid cylinder 7 is used as an advancing / retracting member for advancing and retracting the yarn supply mechanism 4. Based on the control of a control mechanism (not shown), the yarn supply mechanism 4 is connected via the connecting rod 6 when starting the winding process. Are simultaneously advanced, and at the end of the winding process, the yarn supply mechanisms 4 are simultaneously retracted via the connecting rods 6.

  Reference numeral 10 denotes a fluid cylinder used as an elevating member for elevating and lowering the yarn supply mechanism 4, and based on the control of a control mechanism (not shown), at the start of the winding process, the yarn supply mechanism is interposed via the support guide member 8. 4 are simultaneously lowered downward from the standby position indicated by the solid line, and at the end of the winding process, the support guide member 8 is used to simultaneously lower the standby position indicated by the solid line to the standby position indicated by the solid line. To rise.

  The reeling device having the yarn cutting mechanism according to the present invention is configured as described above, for example. For convenience, the procedure of the reeling process will be described first (the reeling device illustrated in FIGS. 12 to 16). When starting the reeling process, as shown in FIG. 12, the yarn supply mechanism 4 is put on standby at the standby position indicated by the solid line in FIG. In a state where the driving of 2 is suspended, after the tip of the yarn 9 is inserted in advance into at least the inlet side of the air blowing hole 4b, compressed air is introduced into the air sending pipe 4a through the supply pipe 4d, The yarn 9 is discharged together with the compressed air from the tip of the feed pipe 4a.

  Then, when the tip of the yarn 9 is sufficiently and sufficiently discharged (for example, below the center of the touch roll 2), the introduction of the compressed air is stopped and the air feeding of the yarn 9 is stopped as shown in FIG. At the same time, the yarn supply mechanism 4 is lowered below the standby position via the fluid cylinder 10, and then, as shown in FIG. 14, the yarn supply mechanism 4 is indicated via the dotted line in FIG. And the driving of the conveyor 1 and the touch roll 2 is started. When the veneer veneer 11 is conveyed in the direction indicated by the arrow as the conveyor 1 is driven, the tip of the veneer veneer 11 will eventually abut against the yarn 9 and the tip of the yarn 9 will also be transferred in the direction indicated by the arrow. Is done.

  Eventually, when the tip of the veneer veneer 11 reaches the portion of the yarn 9 protruding from the tip of the air pipe 4a, the yarn 9 is guided along the outer periphery of the winding shaft 3 as shown in FIG. At the same time, as the veneer veneer 11 advances, the yarn 9 is also sequentially pulled out from the tip of the air feed tube 4a.

  Hereinafter, as shown in FIG. 16, the succeeding veneer veneer 11 is forcibly guided and guided by the thread 9 so as to follow the outer side of the preceding veneer veneer 11, and is wound so as to be a wound ball 20 having a desired thickness. Is processed.

  Although not shown in the drawings, the winding process is performed by applying an appropriate tension to the yarn being wound through an appropriate tension applying mechanism before being introduced into the air pipe, if necessary. It is preferable to stabilize the winding ball, and at the end of the winding process, it is preferable to prevent loosening of the wound ball by winding an extra thread around the outer circumference of the wound ball as necessary.

  Next, referring to the operation explanatory diagram of the yarn cutting mechanism illustrated in FIG. 6, the yarn cutting process by the yarn cutting mechanism as the main subject will be described. The yarn cutting mechanism 5 configured as described above. The fluid cylinder 14 is based on the control of a control member (not shown), and in a normal state, as shown in FIG. 3, the outer blade flow hole 12a and the inner blade guide hole 13a are in a normal position where they are connected in series. The inner cutter 13 is positioned. When desired (for example, after the end of the winding process), as shown in FIG. 6, a cutting position where the outer cutter flow hole 12a and the inner cutter guide hole 13a do not overlap at all is obtained. Then, the inner blade 13 is moved forward and then moved back to the normal position shown in FIG.

  As apparent from FIG. 6, when the inner blade 13 reaches the cutting position, the thread 9 is cut at the boundary between the outer blade flow hole 12a and the inner blade guide hole 13a. In any case, the yarn waste 9a is generated in the guide hole 13a of the inner blade. In any case, according to the yarn cutting mechanism as described above, the inner blade is reciprocated relative to the outer blade. As a result, the thread can be cut quickly and accurately, and the inner and outer blades only reciprocate and slide. Therefore, the durability of the members is also high, and the installation space is relatively small. Since it only requires, it is suitable for the reeling device.

  And when starting the next winding process, the thread waste 9a left in the guide hole 13a of the inner blade, just by introducing the compressed air into the air feed pipe 4a again through the supply pipe 4d, Since the tip portion of the yarn 9 remaining from the inlet side of the air feed hole 4b to the guide hole 13a portion of the inner blade is discharged from the tip portion of the air feed tube 4a together with the compressed air, The winding process can be easily restarted by a procedure according to the procedure (insertion of the tip of the yarn is not necessary).

  In terms of the certainty of the cutting of the yarn, at the cutting position, the flow hole of the outer blade and the guide hole of the inner blade are a little extra, for example at least several times the thickness of the yarn, preferably at least the yarn. It is preferable that an excess of about 10 times the thickness of the film is displaced, and the fact that the excessive displacement is preferable is the same in the case of the improved example described below.

  Thus, the length of the yarn used for one winding process ranges from several tens of meters to several tens of meters per one point of the yarn supply mechanism, whereas the length of the above-mentioned yarn waste is As much as 2cm is sufficient, waste related to yarn waste is insignificant, but if it is prevented from generating waste, it can be effectively used as it can prevent dirt from scattering of yarn waste. Therefore, as a more preferable embodiment, a yarn cutting mechanism with the following improvements is further proposed.

  That is, FIG. 7 is a partially broken side schematic explanatory view of a yarn supplying mechanism having an improved yarn cutting mechanism, and FIG. 8 is a partially broken plan schematic view of the yarn supplying mechanism illustrated in FIG. It is explanatory drawing. In the figure, reference numeral 5A denotes an improved yarn cutting mechanism, which is equivalent to the outer blade circulation hole 12a in place of the inner blade 13 used in the yarn cutting mechanism 5 illustrated in FIGS. The guide hole 16a is provided in the same direction as the flow hole 12a of the outer blade, and the corner portion on the inlet side of the guide hole 16a is chamfered 16b. A cylindrical inner blade 16 that is movably fitted is provided.

  According to the yarn cutting mechanism 5A configured as described above, when the inner blade 16 is moved to a predetermined cutting position, as is apparent from FIG. 9 which is an operation explanatory diagram of the yarn cutting mechanism. On the inlet side of the guide hole 16a, the thread 9 can enter the chamfer 16b, so that the thread 9 is not cut and the cutting is limited to the outlet side of the guide hole 16a. Occurrence is avoided.

  The embodiment illustrated in FIG. 10 replaces the outer blade 12 used in the yarn cutting mechanism 5 illustrated in FIGS. 1 to 5 with a flow hole 17a having a thickness equivalent to that of the air blowing hole 4b of the air feeding pipe. Is provided in the same direction as the air blowing hole 4b of the air feeding tube, and the sliding hole 17b that has a circular cross section and accommodates the inner blade 13 without gaps over the entire circumference is provided. The outer blade 17 is provided with a chamfer 17d on the corner facing the inner blade 13 on the outlet side of the flow hole 17a, and is received in the receiving groove 4e of the air pipe. The thread cutting mechanism 5B is configured, and as is apparent from the drawing, the thread 9 can enter the chamfered portion 17d when the inner blade 13 is moved to a predetermined cutting position. Since the yarn 9 is not cut and the cutting is limited to the inlet side of the flow hole 17a, FIG. Similar to the improved example illustrated in FIG. 8, the generation of lint is avoided.

  Incidentally, although not shown in the drawings, in the opposite direction to the above-described two improvements, the corner portion facing the inner blade on the inlet side of the flow hole of the outer blade, or the outlet side of the guide hole of the inner blade. Although it is possible to prevent the yarn from being cut by configuring the corner portion to be chamfered, the configuration in which chamfering is performed in such a direction causes the yarn to be sent later when resuming air feeding. The compressed air tends to be slightly unstable due to the turbulent flow of the compressed air. Therefore, it is better to chamfer the lower side of the compressed air in the direction of flow as in the two improved examples. preferable.

  From the viewpoint of ease of processing, it is preferable that the cross-sectional shapes of the air feeding hole of the air feeding tube, the flow hole of the outer blade, and the guide hole of the inner blade are all circular as shown in the above-described examples. As for the thickness of the hole that is convenient for airing a thread with a thickness of about 500 to 2000 denier suitable for the ring processing, around 6 mm (about 4 to 8 mm) is a rough standard, even if it is slightly Even if there is a dimensional error, there is no practical limitation as long as the yarn does not get caught in the middle, but in any case, the cross-sectional shape of each hole is not necessarily limited to a circular shape. It is sufficient if the hole has a cross-sectional shape that can smoothly circulate.

  Further, in terms of accuracy to prevent the yarn from being cut, it is preferable that the chamfer dimension is relatively large. However, if it is excessively larger than necessary, turbulent flow of compressed air tends to occur, which is useless. It is a tentative guideline that one side of the (or flow hole) is 1/3 to 2/3 of the thickness of the guide hole (or flow hole). However, as described above, when the cutting position is set so that the flow hole of the outer blade and the guide hole of the inner blade are slightly displaced, the thickness of the thread is added to the size of the displacement. A minimum of chamfered dimensions is required to exceed the dimensions.

  The chamfered shape is not shown in addition to the tapered shape shown in each of the above-described examples. However, the chamfered shape may be, for example, a trumpet shape or a normal round shape. In short, the yarn is stable while preventing the yarn from being cut. A shape that can be guided in a simple manner is sufficient.

  Next, the example shown in FIG. 11 includes a flow hole 18a having a thickness equivalent to that of the air blowing hole 4b of the air blowing pipe in the same direction as the air blowing hole 4b of the air feeding pipe. A sliding hole 18b having a rectangular cross-section for accommodating the blade 19 without any gap over the entire circumference is provided in a direction intersecting with the air feeding hole 4b of the air feeding pipe, and further an oil supply hole 18c reaching the sliding hole 18b is provided. The outer blade 18 that is exactly accommodated in the housing groove 4e of the air pipe and the guide hole 19a having the same thickness as the circulation hole 18a of the outer blade are provided in the same direction as the circulation hole 18a of the outer blade. The main part of the thread cutting mechanism is configured by combining a prismatic inner blade 19 that is slidably fitted in the outer blade sliding hole 18b without gaps.

  Also by the cutting mechanism having the main part as described above, the inner blade 19 is reciprocated relative to the outer blade 18 in a similar manner to the cutting mechanism illustrated in FIGS. Since it is possible to cut the yarn accurately and the inner and outer blades only reciprocate, the durability of the member is also high, and only a relatively small installation space is required. It is suitable for the reeling device.

  Further, if necessary, the chamfering process is performed on a desired corner portion of the guide hole or the flow hole as in the embodiment illustrated in FIGS. 7 and 8 and the embodiment illustrated in FIG. It is also possible to avoid generation of waste.

  Incidentally, the cross-sectional shapes of the outer blade sliding hole and inner blade outer shape are both circular as in the thread cutting mechanism exemplified in FIGS. 1 to 5, 7, 8, and 10. Then, although the processing of the members is relatively easy, when the inner blade is reciprocated in the axial direction as shown in the example, the piston as shown in the example is used to prevent the rotation of the inner blade. Non-rotating type fluid cylinder is used as a reciprocating member, or although not shown in the figure, for example, a guide member is attached to the sliding hole of the outer blade and the outer periphery of the inner blade. There are characteristics that need to be treated separately. However, only when the cross-sectional shape of the sliding hole of the outer blade is circular, the yarn can be cut even by reciprocating the inner blade in the circumferential direction (turning one way alternately in the circumferential direction). In this case, it is unnecessary to prevent the inner blade from rotating.

  On the other hand, as shown in the example shown in FIG. 11, if the cross-sectional shapes of the outer blade sliding hole and the inner blade are both rectangular, the processing of the members is slightly complicated, but the shape itself is the inner shape. Since the rotation of the blade is prevented, there is a characteristic that it is not necessary to separately perform a detent treatment for the inner blade. However, the cross-sectional shape of the outer hole sliding hole and inner blade outer shape is not limited to the shape shown in each of the above-described illustrated examples. The cross-sectional shape of the outer shape of the inner blade is a polygon other than a rectangle, or the cross-sectional shape of the sliding hole of the outer blade is circular, and the outer cross-sectional shape of the inner blade is oval or bowl-shaped. It is not always necessary to make both cross-sectional shapes the same, such as a combination. In short, it is sufficient if at least the part where the guide hole of the inner blade exists can be fitted together without any gaps. There are no restrictions.

  Further, the form of the reciprocating member is not limited to the form shown in the illustrated example, and although not shown, for example, a rotary fluid cylinder suitable for reciprocating the inner blade in the circumferential direction, or For example, a combination of an appropriately shaped cam and a drive source composed of a servo motor or the like is sufficient, as long as it is a member that can reciprocate the inner blade only in the desired section, and there is no problem with the above-described reeling device. As long as it can be attached, there is no particular restriction on the form, and of course, the form of the fixing member used for locking the reciprocating member and the airpipe is also the airpipe, outer blade, reciprocating member. The design may be changed as appropriate according to the form of the above or the like, or the design may be changed by omitting the fixing member by fixing directly to the air pipe.

  As is apparent from the above, according to the yarn cutting mechanism of the present invention, the yarn can be cut quickly and accurately, and the durability of the member is high, so that a relatively small installation space is required. Therefore, as well as being suitable for the reeling device, it may be diverted to a different type of business that handles yarns as necessary.

1 is a schematic side view of a reeling device having a yarn cutting mechanism according to the present invention. It is a partially broken side schematic explanatory drawing of the yarn supply mechanism illustrated in FIG. It is a partially broken plane schematic explanatory drawing of the thread | yarn supply mechanism illustrated in FIG. It is a front schematic explanatory drawing of the thread | yarn supply mechanism illustrated in FIG. FIG. 2 is a perspective explanatory view of an outer blade and an inner blade that constitute a part of the yarn cutting mechanism illustrated in FIG. 1. It is operation | movement explanatory drawing of the thread | yarn cutting mechanism illustrated in FIGS. It is a partially broken side schematic explanatory diagram of a yarn supply mechanism having an improved yarn cutting mechanism. FIG. 8 is a partially broken plan schematic explanatory view of the yarn supply mechanism illustrated in FIG. 7. It is operation | movement explanatory drawing of the thread | yarn cutting mechanism illustrated in FIG.7 and FIG.8. It is a partially broken side schematic explanatory diagram of a yarn feeding mechanism having a thread cutting mechanism of different forms with improvements. It is an isometric view explanatory drawing of the outer blade and inner blade of a different form. It is operation | movement explanatory drawing of the reeling apparatus illustrated in FIGS. It is operation | movement explanatory drawing of the reeling apparatus illustrated in FIGS. It is operation | movement explanatory drawing of the reeling apparatus illustrated in FIGS. It is operation | movement explanatory drawing of the reeling apparatus illustrated in FIGS. It is operation | movement explanatory drawing of the reeling apparatus illustrated in FIGS.

Explanation of symbols

1: Conveying conveyor 2: Touch roll 3: Winding shaft 4: Yarn supply mechanism 4a: Air feed pipe 4b: Air feed hole 4c: Notch 4d: Compressed air supply pipe 4e: Outer blade housing groove 4f: Compression Air supply holes 5, 5A, 5B: Yarn cutting mechanism 6: Connection rod 7, 10: Fluid cylinder 9: Yarn 11: Veneer single plates 12, 17, 18: Outer blades 12a, 17a, 18a: Distribution of outer blades Holes 12b, 17b, 18b: Sliding holes 13, 16, 19 of outer blades: Inner blades 13a, 16a, 19a: Guide holes 14 of inner blades: Piston rod non-rotating fluid cylinder 15: Fixing members 16b, 17d: chamfer

Claims (5)

  Using an air feed tube having an air feed hole through which the yarn and compressed air smoothly flow, the yarn start end is blown at the start, and the yarn start end is engaged with the outer periphery of the winding shaft in advance. A yarn cutting mechanism in a reeling device for a veneer single plate that guides the veneer single plate to the outer periphery of the winding shaft through the winding shaft and winds the veneer single plate together with the yarn. And a sliding hole that slidably accommodates the inner blade, and is fixedly disposed in the middle portion of the air pipe in a state of being interrupted in the middle of the air hole of the air pipe. An inner blade having a guide hole for thread and compressed air, and slidably fitted inside the outer blade, and when desired, the inner blade is reciprocated relative to the outer blade. A reciprocating member, and the outer blade has a flow hole having the same thickness as the air blowing hole of the air feeding pipe in the same direction as the air feeding hole of the air feeding pipe. Both of them are provided with a sliding hole for accommodating the inner blade without any gap at least in a portion where the guide hole exists, and the inner blade is in circulation of the outer blade. A guide hole having the same thickness as the hole is provided in the same direction as the circulation hole of the outer blade, and the reciprocating member of the inner blade guide hole and the circulation hole of the outer blade are connected in series. In a veneer single plate reeling device, the inner blade is reciprocated each time only from the normal position to the cutting position where the guide hole of the inner blade and the flow hole of the outer blade do not overlap at all. Thread cutting mechanism.   The corner facing the inner blade on the inlet side of the flow hole of the outer blade, the corner on the inlet side or outlet side of the guide hole of the inner blade, or the inner side on the outlet side of the flow hole of the outer blade 2. The veneer single plate reeling device according to claim 1, wherein any one of four corners facing the blade is chamfered in an appropriate shape. Yarn cutting mechanism.   3. The veneer single plate reeling device according to claim 1, wherein the cross-sectional shapes of the air feed hole of the air feed pipe, the flow hole of the outer blade, and the guide hole of the inner blade are all circular. Yarn cutting mechanism.   4. A thread cutting mechanism in a veneer single plate reeling device according to claim 1, wherein the outer cross-sectional shape of the sliding hole of the outer blade and the outer shape of the inner blade are both circular.   4. A yarn cutting mechanism in a veneer single plate reeling device according to claim 1, wherein the outer cross-sectional shape of the sliding hole of the outer blade and the outer shape of the inner blade are both rectangular.

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