WO2017179173A1 - Element head forming device for slide fastener and cutting punch - Google Patents

Element head forming device for slide fastener and cutting punch Download PDF

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Publication number
WO2017179173A1
WO2017179173A1 PCT/JP2016/062012 JP2016062012W WO2017179173A1 WO 2017179173 A1 WO2017179173 A1 WO 2017179173A1 JP 2016062012 W JP2016062012 W JP 2016062012W WO 2017179173 A1 WO2017179173 A1 WO 2017179173A1
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WO
WIPO (PCT)
Prior art keywords
blade
cutting
linear direction
sliding contact
pair
Prior art date
Application number
PCT/JP2016/062012
Other languages
French (fr)
Japanese (ja)
Inventor
球道 太田
青木　敏雄
茂 土田
Original Assignee
Ykk株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ykk株式会社 filed Critical Ykk株式会社
Priority to CN201680084588.0A priority Critical patent/CN109153066B/en
Priority to PCT/JP2016/062012 priority patent/WO2017179173A1/en
Priority to TW106110767A priority patent/TWI653106B/en
Publication of WO2017179173A1 publication Critical patent/WO2017179173A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/42—Making by processes not fully provided for in one other class, e.g. B21D53/50, B21F45/18, B22D17/16, B29D5/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/46—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples
    • B21D53/50—Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples metal slide-fastener parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F45/00—Wire-working in the manufacture of other particular articles
    • B21F45/16—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes
    • B21F45/18—Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes of slide fastener elements

Definitions

  • the present invention relates to a slide fastener tooth forming apparatus for shearing a service tooth wire, and a cutting punch used for the shear process.
  • Patent Document 1 As an example of the above-described slide fastener service gear forming apparatus, there is one provided with a relatively slidable cutting die and a cutting punch in order to shear the service tooth wire (Patent Document 1).
  • the dental wire is supplied from the cutting die side to the cutting punch side, the cutting punch is moved closer to the distal end of the dental wire, and the distal end of the dental wire is cut.
  • shearing die jointly to produce dental materials.
  • the cutting punch disclosed in Patent Document 1 includes a main body that shears the dental wire, and a portion of the main body that protrudes in a stepped shape from an opposing surface that faces the cutting die.
  • the main body includes a facing surface that faces the cutting die, and a blade surface that intersects the facing surface and collides with the dental tooth wire.
  • a conventional cutting punch there is one having only a main body that shears a dental service wire, unlike the above example (Patent Document 2).
  • This main body also includes a facing surface that faces the cutting die, and a blade surface that intersects the facing surface and collides with the dentition wire.
  • the above-described two examples of the cutting punch both have a slidable contact surface facing the cutting die, and the slidable contact surface and the blade surface intersect each other. Then, one end of the blade surface is also one end of the sliding contact surface. Therefore, when shearing, one end of the blade surface is gradually damaged by friction with the cutting die, so that the durability of the cutting punch decreases.
  • the present invention was created in consideration of the above circumstances, and its purpose is to improve the durability of the cutting punch.
  • the slide fastener service gear molding apparatus of the present invention includes a cutting die and a cutting punch that face each other in a second linear direction orthogonal to the first linear direction.
  • the cutting die and the cutting punch jointly shear a tooth wire having a shape in which a pair of legs are bifurcated from the head in the first linear direction and relatively slide in the first linear direction.
  • Each has a movable blade part.
  • a pair of blade parts are each provided with the blade board part which shears the wire for dental gear supplied in the direction which goes to a cutting punch from a cutting die among 2nd linear directions.
  • At least one blade part is provided with the convex part which protrudes from a blade plate part in order to separate a pair of blade plate part in a 2nd linear direction.
  • Each of the pair of blade parts includes a sliding contact surface that is in sliding contact with the second linear direction at the position of the convex portion.
  • Each of the pair of blade plate portions includes a blade surface that collides with the dentition wire, and a non-sliding surface that intersects the blade surface and separates in the second linear direction.
  • the cutting punch of the slide fastener service gear forming apparatus shears the tooth service wire having a shape in which a pair of legs are bifurcated from the head jointly with the cutting die and is relative to the cutting die.
  • the blade portion is slidable in the first linear direction.
  • the blade portion includes a blade plate portion that shears the dental wire supplied in a direction from the cutting die toward the blade portion in a second linear direction orthogonal to the first linear direction, and a second linear direction.
  • a convex portion projecting in a direction from the blade plate portion toward the cutting die.
  • the convex portion includes a sliding contact surface that is in sliding contact with the cutting die.
  • the blade plate portion includes a blade surface that collides with the tooth metal wire, and a non-sliding surface that intersects the blade surface and is recessed in a stepped manner with respect to the sliding contact surface so as to be separated from the cutting die.
  • the cutting punch is formed of a blade plate portion and a convex portion and includes a concave groove portion that is recessed in a direction from the convex portion side to the blade plate portion side in the second linear direction when viewed from the blade surface side. .
  • the convex portion is slidable with respect to the cutting die as viewed from the blade surface side, and both sides of the third linear direction perpendicular to both the first and second linear directions with the blade surface as the center.
  • a pair of sliders separated from each other is provided.
  • the cutting die and the cutting punch each have a non-sliding contact surface intersecting the blade surface, and the pair of non-sliding contact surfaces are separated in the second linear direction. Therefore, the blade surfaces do not come into contact with each other during the sliding movement, so that they are not damaged, and the durability of the cutting punch and the cutting die is improved.
  • the cutting punch and the cutting die are provided with a sliding contact surface that is in sliding contact with the second linear direction at the position of the convex portion, the relative sliding motion between the cutting die and the cutting punch is stabilized.
  • the non-sliding contact surface of the blade plate portion is separated from the cutting die, and the blade surface of the blade plate portion and the non-sliding contact surface are crossed, so that the blade surface is slid.
  • the cutting die can be prevented from being damaged, and the durability of the cutting punch is improved.
  • the sliding contact of the convex portion is in contact with the cutting die, the relative sliding motion with the cutting die is stabilized.
  • the convex portion is located on both sides in the third linear direction with the blade surface as the center when viewed from the blade surface side. Since a pair of sliders are provided, the relative sliding movement between the cutting punch and the cutting die is compared with, for example, a cutting punch having a sliding surface only on one side in the third linear direction with respect to the blade surface. Stability is improved and shear accuracy is improved.
  • FIG. 5 is a cross-sectional view taken along the line V-V of FIG.
  • FIG. 6 shows a state in which the dental material is pushed further into the cutting punch than the state of FIG.
  • FIG. 5 is a top view which shows the relationship between a cutting punch and a dental gear wire.
  • FIG. 1 It is a perspective view which shows the fixed tooth shaping apparatus of 1st embodiment of this invention. It is a perspective view which shows the 2nd example of a cutting punch. It is a perspective view which shows the 3rd example of a cutting punch. It is a perspective view which shows the 4th example of the cutting punch used with the service gear molding apparatus of 2nd embodiment of this invention. It is sectional drawing which shows the shearing process part of the fixed tooth shaping apparatus of 2nd embodiment of this invention. It is a perspective view which shows the 5th example of a cutting punch.
  • the dentition wire 6 to be processed by the slide fastener dentition forming device is made of, for example, metal and has a substantially Y-shaped cross section as shown in FIG. And a pair of leg portions 6b and 6b that are symmetrically branched.
  • first, second, and third linear directions The directions of three orthogonal straight lines are referred to as first, second, and third linear directions.
  • first linear direction is referred to as the front-rear direction and is the left-right direction in FIG.
  • forward direction is the right direction in FIG. 3
  • rear direction is the left direction in FIG.
  • the second linear direction is referred to as the up-down direction and is a direction orthogonal to the paper surface of FIG.
  • the upward direction is a direction facing the near side in the orthogonal direction to the paper surface of FIG. 3
  • the downward direction is a direction facing the far side of the orthogonal direction to the paper surface of FIG.
  • the third linear direction is referred to as the left-right direction and is the up-down direction in FIG.
  • the left direction is the downward direction in FIG. 3, and the right direction is the upward direction in FIG.
  • the tooth forming device of the first embodiment of the present invention is a shearing portion 2 for forming a tooth fixing material 7 by shearing the tooth fixing wire 6, and the head of the tooth fixing material 7.
  • the head processing part 3 which forms a meshing convex part and a meshing recessed part in 7a, and the attachment processing part 4 which attaches the fastener material 7 in which the meshing convex part and the meshing recessed part were formed to the fastener tape 8 are provided.
  • the shearing portion 2 includes a ram 10 and a cutting die 14 which are aligned in a straight line in order in the forward direction, and the ram 10 and the cutting die 14 through which the dental wire 6 is passed. And a dentition wire supply device (not shown) for supplying the dentition wire 6 upward, and the ram 10 and the cutting die 14 so as to face upward with respect to the ram 10 and the cutting die 14.
  • a cutting punch 20 that is relatively slidable in the front-rear direction and a support member 28 that supports the cutting punch 20 are provided. Then, the shearing portion 2 shears the distal end portion (upper end portion) of the dentition wire 6 in cooperation with the cutting die 14 and the cutting punch 20 to form the dentition material 7.
  • the ram 10 and the cutting die 14 are attached to a frame (not shown) so as to be capable of linear reciprocation in the front-rear direction.
  • the ram 10 and the cutting die 14 are provided with a wire insertion hole 12 for inserting the toothed wire 6 between them.
  • the wire rod insertion hole 12 penetrates in the vertical direction and restricts the dentistry wire rod 6 so as not to move in the front-rear direction and the left-right direction. 2 and 3, the wire insertion hole 12 is formed by the front surface of the ram 10 and the rear surface of the cutting die 14 that are separated in the front-rear direction.
  • the rear surface of the cutting die 14 is provided with a rib 14r protruding forward at the center in the left-right direction.
  • the dentition wire 6 is positioned in the left-right direction so that the rib 14r is sandwiched from the left and right between the pair of legs 6b, 6b, and the head 6a of the dentition wire 6 between the rib 14r and the ram 10 is front and rear. Is positioned so as to be sandwiched from the front and rear.
  • the wire rod insertion hole 12 is a hole having a Y-shaped cross-sectional shape slightly larger than that of the dental wire 6.
  • the ram 10 and the cutting die 14 are in contact with each other in the front-rear direction at portions other than the wire insertion hole 12.
  • the cutting die 14 and the cutting punch 20 are respectively provided with blade parts 15 and 21 that jointly shear the dentition wire 6 in the front-rear direction and relatively slide in the front-rear direction.
  • the first example of the cutting punch 20 includes a fixing portion 27 for fixing the rear portion of the blade portion 21 to a frame (not shown) in addition to the blade portion 21 described above.
  • the fixing part 27 includes a through hole 27a that protrudes upward from the rear part of the blade part 21 and penetrates in the front-rear direction.
  • a bolt (not shown) is inserted into the through hole 27 a and is bolted to the support member 28.
  • the support member 28 is fixed to the frame.
  • the blade portion 21 of the cutting punch 20 is formed by a plate-shaped blade plate portion 22, a convex portion 23 protruding downward from the blade plate portion 22, and the blade plate portion 22 and the convex portion 23. And a recessed groove 23s that is recessed upward as viewed from the front.
  • the convex portion 23 includes a pair of sliders 24 and 25 that are slidable with respect to the cutting die 14 and separated in the left-right direction when viewed from the front.
  • the pair of sliders 24 and 25 has a plate shape that is narrower in the left-right direction than the blade plate portion 22, and extends over the entire length in the front-rear direction at the left and right side portions of the lower surface of the blade plate portion 22.
  • the lower surface 23 a of the convex portion 23 is a sliding contact surface 23 a that is in sliding contact with the left and right side portions of the upper surface of the ram 10 and the cutting die 14.
  • the sliding contact surface 23a is constituted by the lower surfaces 24a and 25a of the pair of sliders 24 and 25.
  • the lower surfaces 24a and 25a of the sliders 24 and 25 are a part of the sliding contact surface 23a, that is, the sliding contact surface portions 24a and 25a.
  • the slidable contact surface 23a is constituted by a pair of slidable contact surface portions 24a and 25a, and is located on the same plane extending in the front-rear direction and the left-right direction.
  • the pair of sliders 24 and 25 will be referred to as first and second sliders when it is necessary to distinguish them.
  • the blade plate portion 22 includes a blade surface 22a at the center in the left-right direction on the front surface (the surface facing the direction toward which the dental wire 6 approaches when shearing), and a blade at the center in the left-right direction on the bottom surface.
  • a non-sliding contact surface 22c is provided at a position that intersects the surface 22a and is recessed upward in a stepped manner with respect to the sliding contact surface 23a so as to be separated from the cutting die 14.
  • the blade surface 22 a has a concave shape that is recessed backward on the front surface of the blade plate portion 22 in order to collide with the head portion 6 a and the pair of leg portions 6 b, 6 b of the dental tooth wire 6.
  • the width of the blade surface 22a in the left-right direction is the widest at the front end and narrows toward the rear.
  • the blade surface 22a forms an internal space 22s inside thereof.
  • the internal space 22s penetrates in the vertical direction, which is also the penetration direction of the wire insertion hole 12, and opens in the direction in which the dental wire 6 relatively approaches when shearing, that is, in the front direction.
  • the non-sliding contact surface 22c of the cutting punch 20 is a plane extending in the left-right direction and the front-rear direction as shown in FIG.
  • the front end of the non-sliding contact surface 22c of the cutting punch 20 is also the lower end of the blade surface 22a.
  • the left-right width 23w at the front end of the non-sliding contact surface 22c is the lower end of the blade surface 22a and the left-right direction at the front end. It has the same dimensions as the width 22w of the.
  • the non-sliding contact surface 22c of the cutting punch 20 and the left and right facing surfaces 24b, 25b of the pair of sliders 24, 25 form a concave groove 23s.
  • the recessed groove portion 23 s includes an inner space 23 b on the inner side, and the inner space 23 b is partitioned from the left and right by a pair of sliders 24 and 25 of the convex portion 23 as viewed from the blade surface 22 a side, and by the blade plate portion 22. The top is partitioned. Further, the internal space 23b inside the concave groove 23s penetrates the cutting punch 20 in the front-rear direction and opens downward.
  • the concave groove portion 23s is a portion through which the distal end portion (upper end portion) of the dentistry wire 6 remaining after shearing passes.
  • the depth of the groove 23s is set to a depth of 23h or more from the front end to the rear end on the basis of the depth 23h of the front end.
  • the depth of the front end is extended over the entire length of the front and rear.
  • the depth is the same as 23h.
  • the width of the concave groove 23s in the left-right direction is based on the width 23w in the left-right direction at the front end of the non-sliding contact surface 22c, and the left-right direction at the front end of the non-sliding contact surface 22c over the entire length in the vertical direction and front-rear direction.
  • the width 23w is equal to or greater than the width 23w in the left-right direction at the front end of the non-sliding contact surface 22c.
  • the cutting die 14 has a blade portion 15 at the top. Unlike the blade part 21 of the cutting punch 20, the blade part 15 of the cutting die 14 has only a plate-like blade plate part 16 because there is no convex part.
  • a portion of the rear surface located in the wire insertion hole 12 is a blade surface 15a that collides with the toothed wire 6 when shearing.
  • the blade portion 15 (blade plate portion 16) is a surface facing the cutting punch 20, that is, a flat surface whose upper surface extends in the front-rear direction and the left-right direction.
  • the left and right side portions of the upper surface of the blade portion 15 are slidable contact surfaces 15c that slidably contact the lower surface (slidable contact surface 23a) of the convex portion 23.
  • the upper surface of the ram 10 is also located on the same plane as the upper surface of the cutting die 14, and its central portion in the left-right direction is a portion away from the lower surface of the cutting die 14 in the vertical direction. ). Further, the left and right side portions of the upper surface of the ram 10 are slidable contact surfaces (reference numerals omitted) facing the lower surface (slidable contact surface 23 a) of the convex portion 23.
  • the above-described shearing portion 2 shears the dental wire 6 as follows. 1) It is assumed that the dentition wire 6 protrudes upward from the sliding contact surface 15 c of the cutting die 14 by the thickness of one dentition material 7. At this time, the ram 10 is set to the forward limit position. 2) The ram 10 moves backward from the forward limit position. Then, the cutting die 14 and the forming die 30 are retracted together with the ram 10. 3) While the ram 10 is retracted, the blade surface 22a of the cutting punch 20 collides with the rear surface of the upper end portion of the service wire 6 as shown in FIG. As shown in FIG. 6, the cutting die 14 and the cutting punch 20 jointly shear the upper end portion of the service tooth wire 6, and the service tooth material 7 is separated.
  • the blade surfaces 15a and 22a of the cutting die 14 and the cutting punch 20 are separated from each other in the vertical direction. Therefore, the blade surfaces 15a and 22a are not damaged because they do not contact each other during the sliding motion. This improves the durability of each other.
  • the cutting die 14 and the cutting punch 20 are provided with sliding surfaces 15c and 23a that are in sliding contact with each other in the vertical direction at the position of the convex portion 23, and are slidable with respect to the pair of blade surfaces 15a and 22a. Since 23c is arranged on the left and right, the relative sliding motion between the cutting die 14 and the cutting punch 20 is stable as compared with, for example, those having sliding contact surfaces on only one side of the pair of blade surfaces. To do.
  • the head processing unit 3 is aligned with the cutting punch 20 that is also a part of the shearing processing unit 2 and the cutting die 14 in a straight line in the forward direction and in the front-rear direction with respect to the cutting punch 20.
  • a forming die 30 that is relatively slidable, a forming punch 32 that is spaced forward from the cutting punch 20 and that can reciprocate vertically with respect to the forming die 30, and the forming punch 32
  • a pressure pad 34 is provided that is spaced forward from the forming punch 32 and can reciprocate in the vertical direction with respect to the forming punch 32.
  • the head processing section 3 plastically processes the head 7a of the tooth material 7 by the forming die 30 and the forming punch 32 to form a meshing convex portion and a meshing concave portion, and the pressure pad 34 is plastically processed.
  • the pair of leg portions of the engagement tooth material 7 are pressed.
  • the forming punch 32 and the pressure pad 34 are attached to the frame so as to be linearly reciprocable.
  • the forming die 30 is attached to the frame so as to be linearly reciprocable in the front-rear direction. Further, as shown in FIG. 10, the forming die 30 has a sliding contact surface (reference numeral omitted) on the upper surface of the forming die 30, and at the rear end of the upper surface and behind the wire insertion hole 12.
  • a molding die part (reference numeral omitted) is provided which is recessed downward and accommodates the tooth material 7.
  • the head processing part 3 described above plastically processes the tooth material 7 in the following manner after the process 3) in the shearing part 2. 4)
  • the ram 10 is further retracted after cutting the dentition material 7 at the shearing portion 2, the dentition material 7 is pushed out while being in contact with the blade surface 22 a of the cutting punch 20. At this time, the upper end portion of the dentition wire 6 passes through the internal space 23b of the groove portion 23s.
  • the tooth material 7 reaches directly above the forming die portion of the forming die 30.
  • the forming punch 32 and the pressure pad 34 are lowered from above the mold part, and the pressure pad 34 regulates the pair of leg parts, and the forming punch 32 moves the head 7a of the tooth material 7 to the mold part. Pushing toward the bottom surface, the head 7a is formed with a meshing convex part and a meshing concave part. 6) The forming punch 32 and the pressure pad 34 rise.
  • the attachment processing portion 4 includes a forming die 30 that is also a part of the head processing portion 3, and a tape (not shown) that intermittently supplies the fastener tape 8 upward in front of the forming die 30.
  • Fastener with a pair of legs sandwiched between the feeding device 7 and the working tooth material 7 formed with a meshing convex part and a meshing concave part at an interval in the left-right direction above the forming die 30 A pair of side punches 40, 40 fixed to the tape 8 are provided.
  • the attachment processing part 4 attaches the tooth material 7 to the fastener tape 8 as follows after the processing of 6) in the head processing part 3. 7)
  • the ram 10 moves forward and the cutting die 14 and the forming die 30 move forward in synchronism with the processing of 6) in the head machining section 3, that is, the processing of raising the forming punch 32 and the pressure pad 34.
  • the front end portion of the forming die 30 is brought close to the fastener tape 8.
  • the pair of leg portions of the tooth material 7 accommodated in the mold part are disposed on the left and right sides of the fastener tape 8, and the pair of side punches 40, 40 are the pair of leg portions. It is arranged on the left and right outside.
  • the shearing portion 2 of the engagement gear forming apparatus 1 of the first embodiment described above is not limited to the first example of the cutting punch 20, but the second example of the cutting punch 20 shown in FIG. 9 or the cutting punch shown in FIG. Twenty third examples may be used.
  • the second example of the cutting punch 20 is different from the first example of the cutting punch 20 in the shape of the convex portion 23. More details are as follows.
  • the pair of sliders 24 and 25 constituting the convex portion 23 has a lateral width narrower than a lateral width of the pair of sliders in the first example. Therefore, in the left-right direction, the non-sliding contact surface 22c of the cutting punch 20 is located at the center in the left-right direction of the blade surface 22a, and the non-sliding contact surface 22c of the cutting punch 20 is left and right with respect to the blade surface 22a.
  • the width 23w in the left-right direction at the front end of the non-sliding contact surface 22c is formed lower than the lower end of the blade surface 22a and the width 22w in the left-right direction at the front end.
  • the third example of the cutting punch 20 is different from the first example of the cutting punch 20 in the shape of the convex portion 23. More details are as follows.
  • the convex portion 23 has a U-shape when viewed from below, and the first and second sliders 24 and 25 and the first and second sliders 24 separated from each other on the rear side of the blade surface 22a. , 25 and a third slider 26 for connecting the rear portions.
  • the first, second, and third sliding contact surface portions 24a, 25a, and 26a of the sliders 24, 25, and 26 are disposed on a single plane that extends in the left-right direction and the front-rear direction.
  • the inner space 23b formed inside the concave groove 23s extends in the front-rear direction, and is partitioned by the first and second sliders 24, 25 in the left-right direction, and by the blade plate part 22 in the upper direction. It is partitioned and the rear is partitioned by the third slider 26.
  • the non-sliding contact surface 22c is formed only on the lower surface of the blade plate portion 22 other than the convex portion 23, that is, the central portion in the left-right direction and the front portion.
  • the shearing part of the engagement gear forming apparatus of the second embodiment of the present invention uses the fourth example of the cutting punch 20.
  • the fourth example of the cutting punch 20 is such that the depth of the concave groove 23 s is deeper than that of the first example of the cutting punch 20.
  • the cutting die 14 has the shape of the blade portion 15 at the upper part thereof changed in correspondence with the fourth example of the cutting punch 20. Details of the relationship between the cutting punch 20 and the cutting die 14 are as follows.
  • the cutting punch 20 and the cutting die 14 jointly shear the dental gear wire 6. Accordingly, the vertical distance between the lower end of the blade surface 22a of the cutting punch 20 and the upper end of the blade surface 15a of the cutting die 14 affects the product shape (shear accuracy) of the sheared tooth material 7, so that The tooth material 7 is set at a predetermined interval corresponding to the required accuracy.
  • the depth 23h of the front end of the groove 23s is deeper than that of the groove 23s of the first example of the cutting punch 20.
  • the shape of the cutting die 14 is adapted to the fourth example of the cutting punch 20.
  • the blade portion 15 of the cutting die 14 includes only the blade plate portion 16, and protrudes upward from the blade plate main body portion 16a extending in the left-right direction and the front-rear direction, and the central portion in the left-right direction of the blade plate main body portion 16a.
  • the protruding portion 16b is provided.
  • the upper surface of the raised portion 16 b is a portion facing the non-sliding contact surface 22 c of the cutting punch 20 and is the non-sliding contact surface 15 b of the cutting die 14.
  • a portion of the upper surface of the blade plate main body 16 a that faces the convex portion 23 of the cutting punch 20 is a sliding contact surface 15 c of the cutting die 14.
  • the fifth example of the cutting punch 20 is different from the first example of the cutting punch 20 in the depth of the concave groove 23 s and the shape of the convex 23. More details are as follows.
  • the depth of the groove 23s is the same as the depth of the groove 23s of the fourth example of the cutting punch 20, and the depth 23h of the front end of the groove 23s is made larger than that of the groove 23s of the first example of the cutting punch 20. It ’s deep.
  • the convex part 23 is provided with a pair of sliders 24 and 25 separated from each other in the left and right and front and rear directions.
  • the lower surfaces of the pair of sliders 24 and 25 are slidable contact surface portions 24a and 25a, and are arranged on one plane extending in the left-right direction and the front-rear direction. Further, the pair of sliders 24 and 25 are separated from each other in the front-rear direction, but are also separated from each other in the left-right direction. A pair of sliders 24 and 25 are provided.
  • the cutting die 14 and the cutting punch 20 have a vertically asymmetric shape in any of the embodiments, but the present invention is not limited to this and may have a vertically symmetric shape.
  • the blade portion of the cutting die includes a plate-like blade plate portion extending in the front-rear direction and the left-right direction, and a convex portion protruding upward from the left and right of the blade plate portion, as in the first example of the cutting punch. May be provided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Slide Fasteners (AREA)
  • Forging (AREA)

Abstract

[Problem] To improve the durability of a cutting punch used in sheer processing. [Solution] This element head forming device for a slide fastener is provided with a cutting die (14) and a cutting punch (20) facing each other in a second linear direction orthogonal to a first linear direction. The cutting die and the cutting punch are each provided with a blade part (15, 21) relatively slidable in the first linear direction. Each of the pair of blade parts is provided with a blade plate part (16, 22) for shearing wire for the element heads. Protrusions (23) protruding from the blade plate parts for separating the pair of blade plate parts in the second linear direction are provided on at least one of the blade parts. Each of the pair of blade parts is provided with a sliding contact surface that faces each other in the second linear direction and is in sliding contact with each other in the position of the protrusion. Each of the pair of blade plate parts is provided with a blade surface (15a, 22a) for impacting the wire for the element head and a non-sliding contact surface (15b, 22c) crossing the blade surface. The pair of non-sliding contact surfaces is separated in the second linear direction.

Description

スライドファスナー用務歯成形装置、カッティングパンチDental equipment for slide fasteners, cutting punch
　本発明は、務歯用線材に対してせん断加工するスライドファスナー用務歯成形装置、およびそのせん断加工に用いられるカッティングパンチに関する。 [Technical Field] The present invention relates to a slide fastener tooth forming apparatus for shearing a service tooth wire, and a cutting punch used for the shear process.
　上記したスライドファスナー用務歯成形装置の一例として、務歯用線材をせん断加工するために、相対的に摺動可能なカッティングダイとカッティングパンチとを備えるものが存在する（特許文献１）。せん断加工は、カッティングダイ側からカッティングパンチ側へ向かって務歯用線材を供給し、務歯用線材の先端部へカッティングパンチを相対的に接近させて、務歯用線材の先端部をカッティングパンチとカッティングダイとの共同によってせん断し、務歯用素材を製造するものである。
　特許文献１に開示されたカッティングパンチは、務歯用線材をせん断する本体と、本体のうちカッティングダイに対向する対向面から段差状に突出する部分とを備える。この本体は、カッティングダイに対向する対向面と、対向面に対して交差すると共に務歯用線材に衝突する刃面とを備えている。 As an example of the above-described slide fastener service gear forming apparatus, there is one provided with a relatively slidable cutting die and a cutting punch in order to shear the service tooth wire (Patent Document 1). In the shearing process, the dental wire is supplied from the cutting die side to the cutting punch side, the cutting punch is moved closer to the distal end of the dental wire, and the distal end of the dental wire is cut. And shearing die jointly to produce dental materials.
The cutting punch disclosed in Patent Document 1 includes a main body that shears the dental wire, and a portion of the main body that protrudes in a stepped shape from an opposing surface that faces the cutting die. The main body includes a facing surface that faces the cutting die, and a blade surface that intersects the facing surface and collides with the dental tooth wire.
　また従来のカッティングパンチの他の例として、上記例と相違して、務歯用線材をせん断する本体のみを備えるものが存在する（特許文献２）。この本体も、カッティングダイに対向する対向面と、対向面に対して交差すると共に務歯用線材に衝突する刃面とを備える。 Also, as another example of a conventional cutting punch, there is one having only a main body that shears a dental service wire, unlike the above example (Patent Document 2). This main body also includes a facing surface that faces the cutting die, and a blade surface that intersects the facing surface and collides with the dentition wire.
中国特許出願公開１０３３８６４４８号明細書Chinese Patent Application Publication No. 10386448 中国実用新案第２０４６８６１６８号明細書Chinese Utility Model No. 20468168 Specification
　上記した二例のカッティングパンチは、いずれもカッティングダイに対向する対向面を摺接面とするものであり、この摺接面と刃面とが交差している。そうすると刃面の一端は摺接面の一端でもある。したがってせん断加工するときに、刃面の一端はカッティングダイとの摩擦によって、徐々に損傷するので、カッティングパンチの耐久性が低下する。 The above-described two examples of the cutting punch both have a slidable contact surface facing the cutting die, and the slidable contact surface and the blade surface intersect each other. Then, one end of the blade surface is also one end of the sliding contact surface. Therefore, when shearing, one end of the blade surface is gradually damaged by friction with the cutting die, so that the durability of the cutting punch decreases.
　かといってカッティングダイに対する対向面がカッティングダイから離れるようにして、それによってカッティングパンチの刃面の一端がカッティングダイから離れるようにすると、カッティングパンチとカッティングダイとの相対的な摺動運動が不安定になり、務歯用線材をせん断する精度が低下する。 However, if the surface facing the cutting die is moved away from the cutting die, and one end of the blade surface of the cutting punch is moved away from the cutting die, the relative sliding movement between the cutting punch and the cutting die is not allowed. It becomes stable and the accuracy of shearing the dental service wire decreases.
　本発明は上記実情を考慮して創作されたもので、その目的は、カッティングパンチの耐久性を向上することである。 The present invention was created in consideration of the above circumstances, and its purpose is to improve the durability of the cutting punch.
　本発明のスライドファスナー用務歯成形装置は、第一の直線方向に対して直交する第二の直線方向に対向するカッティングダイとカッティングパンチとを備える。カッティングダイとカッティングパンチとは、一対の脚部を頭部から二又に分岐した形状の務歯用線材を共同して第一の直線方向にせん断すると共に相対的に第一の直線方向に摺動可能な刀身部をそれぞれ備える。一対の刀身部は、第二の直線方向のうちカッティングダイからカッティングパンチに向かう方向に供給された務歯用線材をせん断する刃板部をそれぞれ備える。少なくとも一方の刀身部は、一対の刃板部を第二の直線方向に離すために刃板部から突出する凸部を備える。一対の刀身部は、凸部の位置において第二の直線方向に対向して摺接する摺接面をそれぞれ備える。一対の刃板部は、務歯用線材に衝突する刃面と、刃面に対して交差すると共に第二の直線方向に離れる非摺接面をそれぞれ備える。 The slide fastener service gear molding apparatus of the present invention includes a cutting die and a cutting punch that face each other in a second linear direction orthogonal to the first linear direction. The cutting die and the cutting punch jointly shear a tooth wire having a shape in which a pair of legs are bifurcated from the head in the first linear direction and relatively slide in the first linear direction. Each has a movable blade part. A pair of blade parts are each provided with the blade board part which shears the wire for dental gear supplied in the direction which goes to a cutting punch from a cutting die among 2nd linear directions. At least one blade part is provided with the convex part which protrudes from a blade plate part in order to separate a pair of blade plate part in a 2nd linear direction. Each of the pair of blade parts includes a sliding contact surface that is in sliding contact with the second linear direction at the position of the convex portion. Each of the pair of blade plate portions includes a blade surface that collides with the dentition wire, and a non-sliding surface that intersects the blade surface and separates in the second linear direction.
　また本発明のスライドファスナー用務歯成形装置のカッティングパンチは、一対の脚部を頭部から二又に分岐した形状の務歯用線材をカッティングダイと共同してせん断すると共にカッティングダイに対して相対的に第一の直線方向に摺動可能な刀身部を備える。刀身部は、第一の直線方向に対して直交する第二の直線方向のうちカッティングダイから刀身部に向かう方向に供給された務歯用線材をせん断する刃板部と、第二の直線方向のうち刃板部からカッティングダイへ向かう方向に突出する凸部とを備える。凸部は、カッティングダイに対して摺接する摺接面を備える。刃板部は、務歯用線材に衝突する刃面と、刃面に対して交差すると共にカッティングダイから離れるように摺接面に対して段差状に凹んだ位置の非摺接面を備える。 Further, the cutting punch of the slide fastener service gear forming apparatus according to the present invention shears the tooth service wire having a shape in which a pair of legs are bifurcated from the head jointly with the cutting die and is relative to the cutting die. In particular, the blade portion is slidable in the first linear direction. The blade portion includes a blade plate portion that shears the dental wire supplied in a direction from the cutting die toward the blade portion in a second linear direction orthogonal to the first linear direction, and a second linear direction. And a convex portion projecting in a direction from the blade plate portion toward the cutting die. The convex portion includes a sliding contact surface that is in sliding contact with the cutting die. The blade plate portion includes a blade surface that collides with the tooth metal wire, and a non-sliding surface that intersects the blade surface and is recessed in a stepped manner with respect to the sliding contact surface so as to be separated from the cutting die.
　凸部は、刃面を中心にして第一、第二の直線方向の何れにも直交する第三の直線方向の片側のみに形成されているか否かを問わないが、カッティングパンチの摺動運動の安定性を向上するには次のようにすることが望ましい。
　すなわち、カッティングパンチは、刃板部および凸部によって形成されると共に刃面側から視て第二の直線方向のうち凸部側から刃板部側へ向かう方向へ凹む凹溝部を備えるものとする。そして凸部は、刃面側から視て、カッティングダイに対して摺動可能であると共に刃面を中心にして第一、第二の直線方向の何れにも直交する第三の直線方向の両側に離れる一対の摺動子を備えることにする。 It does not matter whether the convex part is formed only on one side of the third linear direction perpendicular to both the first and second linear directions with the blade surface as the center, but the sliding movement of the cutting punch In order to improve the stability, it is desirable to do the following.
That is, the cutting punch is formed of a blade plate portion and a convex portion and includes a concave groove portion that is recessed in a direction from the convex portion side to the blade plate portion side in the second linear direction when viewed from the blade surface side. . The convex portion is slidable with respect to the cutting die as viewed from the blade surface side, and both sides of the third linear direction perpendicular to both the first and second linear directions with the blade surface as the center. A pair of sliders separated from each other is provided.
　本発明のスライドファスナー用務歯成形装置によれば、カッティングダイとカッティングパンチとが刃面に対して交差する非摺接面をそれぞれ備えると共に、一対の非摺接面が第二の直線方向に離れているので、刃面同士が摺動運動のときに互いに接触しないことから損傷せずに済み、カッティングパンチとカッティングダイの耐久性が向上する。しかもカッティングパンチとカッティングダイとが凸部の位置において第二の直線方向に対向して摺接する摺接面を備えるので、カッティングダイとカッティングパンチとの相対的な摺動運動が安定する。 According to the slide fastener service gear forming apparatus of the present invention, the cutting die and the cutting punch each have a non-sliding contact surface intersecting the blade surface, and the pair of non-sliding contact surfaces are separated in the second linear direction. Therefore, the blade surfaces do not come into contact with each other during the sliding movement, so that they are not damaged, and the durability of the cutting punch and the cutting die is improved. In addition, since the cutting punch and the cutting die are provided with a sliding contact surface that is in sliding contact with the second linear direction at the position of the convex portion, the relative sliding motion between the cutting die and the cutting punch is stabilized.
　また本発明のカッティングパンチによれば、刃板部の非摺接面をカッティングダイに対して離し、しかも刃板部の刃面と非摺接面とを交差させてあるので、刃面が摺動運動のときにカッティングダイによって損傷せずに済み、カッティングパンチの耐久性が向上する。しかもカッティングパンチは、凸部の摺接がカッティングダイに対して接しているので、カッティングダイとの相対的な摺動運動が安定する。 Further, according to the cutting punch of the present invention, the non-sliding contact surface of the blade plate portion is separated from the cutting die, and the blade surface of the blade plate portion and the non-sliding contact surface are crossed, so that the blade surface is slid. During the dynamic movement, the cutting die can be prevented from being damaged, and the durability of the cutting punch is improved. In addition, since the sliding contact of the convex portion is in contact with the cutting die, the relative sliding motion with the cutting die is stabilized.
　また刃面側から視て刃板部および凸部によって形成される凹溝部を備えるカッティングパンチによれば、刃面側から視て凸部が刃面を中心にして第三の直線方向の両側に離れる一対の摺動子を備えるので、たとえば刃面に対して第三の直線方向の片側だけに摺接面を備えるカッティングパンチに比べれば、カッティングパンチとカッティングダイとの相対的な摺動運動の安定性が向上し、せん断精度が向上する。 Further, according to the cutting punch provided with the concave groove formed by the blade plate portion and the convex portion when viewed from the blade surface side, the convex portion is located on both sides in the third linear direction with the blade surface as the center when viewed from the blade surface side. Since a pair of sliders are provided, the relative sliding movement between the cutting punch and the cutting die is compared with, for example, a cutting punch having a sliding surface only on one side in the third linear direction with respect to the blade surface. Stability is improved and shear accuracy is improved.
本発明の第一実施形態の務歯成形装置で用いるカッティングパンチの第一例を示す斜視図である。It is a perspective view which shows the 1st example of the cutting punch used with the service gear molding apparatus of 1st embodiment of this invention. カッティングパンチの第一例を備えるせん断加工部を示す斜視図である。It is a perspective view which shows the shearing process part provided with the 1st example of a cutting punch. カッティングパンチの第一例を備えるせん断加工部を示す平面図である。It is a top view which shows the shearing process part provided with the 1st example of a cutting punch. カッティングパンチの第一例を備えるせん断加工部を示す正面図である。It is a front view which shows the shearing process part provided with the 1st example of a cutting punch. 図３のV-V線断面図であり、務歯素材がカッティングパンチに衝突した直後の状態を示す。FIG. 5 is a cross-sectional view taken along the line V-V of FIG. 務歯素材がカッティングパンチに図５の状態よりもさらに押し込まれた状態を示す。FIG. 6 shows a state in which the dental material is pushed further into the cutting punch than the state of FIG. カッティングパンチと務歯用線材との関係を示す平面図である。It is a top view which shows the relationship between a cutting punch and a dental gear wire. 本発明の第一実施形態の務歯成形装置を示す斜視図である。It is a perspective view which shows the fixed tooth shaping apparatus of 1st embodiment of this invention. カッティングパンチの第二例を示す斜視図である。It is a perspective view which shows the 2nd example of a cutting punch. カッティングパンチの第三例を示す斜視図である。It is a perspective view which shows the 3rd example of a cutting punch. 本発明の第二実施形態の務歯成形装置で用いるカッティングパンチの第四例を示す斜視図である。It is a perspective view which shows the 4th example of the cutting punch used with the service gear molding apparatus of 2nd embodiment of this invention. 本発明の第二実施形態の務歯成形装置のせん断加工部を示す断面図である。It is sectional drawing which shows the shearing process part of the fixed tooth shaping apparatus of 2nd embodiment of this invention. カッティングパンチの第五例を示す斜視図である。It is a perspective view which shows the 5th example of a cutting punch.
　スライドファスナー用務歯形成装置で加工する務歯用線材６は例えば金属製で、図７に示すように、ほぼＹ字状の断面形状をするもので、頭部６ａと、頭部６ａから二又に対称的に分岐する一対の脚部６ｂ、６ｂとを備えるものである。 The dentition wire 6 to be processed by the slide fastener dentition forming device is made of, for example, metal and has a substantially Y-shaped cross section as shown in FIG. And a pair of leg portions 6b and 6b that are symmetrically branched.
　本発明の務歯形成装置を説明するために、以下のように方向を規定する。３本の直交する直線の方向を、第一、第二、第三の直線方向と称する。また、理解の容易さを考慮して、第一の直線方向は前後方向と称し、図３の左右方向である。また前方向とは、図３の右方向であり、後方向とは図３の左方向である。第二の直線方向は上下方向と称し、図３の紙面に対して直交する方向である。また上方向とは、図３の紙面に対する直交方向のうち手前側を向く方向であり、下方向とは図３の紙面に対する直交方向のうち奥側を向く方向である。第三の直線方向は左右方向と称し、図３の上下方向である。また左方向とは図３の下方向であり、右方向とは図３の上方向である。 In order to describe the tooth forming device of the present invention, the direction is defined as follows. The directions of three orthogonal straight lines are referred to as first, second, and third linear directions. In consideration of ease of understanding, the first linear direction is referred to as the front-rear direction and is the left-right direction in FIG. Further, the forward direction is the right direction in FIG. 3, and the rear direction is the left direction in FIG. The second linear direction is referred to as the up-down direction and is a direction orthogonal to the paper surface of FIG. Further, the upward direction is a direction facing the near side in the orthogonal direction to the paper surface of FIG. 3, and the downward direction is a direction facing the far side of the orthogonal direction to the paper surface of FIG. The third linear direction is referred to as the left-right direction and is the up-down direction in FIG. The left direction is the downward direction in FIG. 3, and the right direction is the upward direction in FIG.
　本発明の第一実施形態の務歯形成装置は図８に示すように、務歯用線材６をせん断加工して務歯素材７を形成するせん断加工部２と、務歯素材７の頭部７ａに噛合凸部と噛合凹部とを成形する頭部加工部３と、噛合凸部と噛合凹部が形成された務歯素材７をファスナーテープ８に取り付ける取付加工部４とを備える。 As shown in FIG. 8, the tooth forming device of the first embodiment of the present invention is a shearing portion 2 for forming a tooth fixing material 7 by shearing the tooth fixing wire 6, and the head of the tooth fixing material 7. The head processing part 3 which forms a meshing convex part and a meshing recessed part in 7a, and the attachment processing part 4 which attaches the fastener material 7 in which the meshing convex part and the meshing recessed part were formed to the fastener tape 8 are provided.
　せん断加工部２は図２～図５に示すように、前方向に順番に一直線に整列したラム１０とカッティングダイ１４であって互いの間に務歯用線材６を通すラム１０とカッティングダイ１４と、務歯用線材６を上方に供給する務歯用線材供給装置（図示略）と、ラム１０とカッティングダイ１４に対して上方に対向するように配置されると共にラム１０とカッティングダイ１４に対して前後方向に相対的に摺動可能なカッティングパンチ２０と、カッティングパンチ２０を支える支持部材２８とを備える。そしてせん断加工部２は、カッティングダイ１４とカッティングパンチ２０との共同によって、務歯用線材６の先端部（上端部）をせん断して務歯素材７を形成する。 As shown in FIGS. 2 to 5, the shearing portion 2 includes a ram 10 and a cutting die 14 which are aligned in a straight line in order in the forward direction, and the ram 10 and the cutting die 14 through which the dental wire 6 is passed. And a dentition wire supply device (not shown) for supplying the dentition wire 6 upward, and the ram 10 and the cutting die 14 so as to face upward with respect to the ram 10 and the cutting die 14. A cutting punch 20 that is relatively slidable in the front-rear direction and a support member 28 that supports the cutting punch 20 are provided. Then, the shearing portion 2 shears the distal end portion (upper end portion) of the dentition wire 6 in cooperation with the cutting die 14 and the cutting punch 20 to form the dentition material 7.
　ラム１０とカッティングダイ１４は、図示しないフレームに対して前後方向に直線往復動可能に取り付けられる。またラム１０とカッティングダイ１４とは、互いの間に務歯用線材６を挿通する線材挿通孔１２を備える。線材挿通孔１２は、上下方向に貫通すると共に、務歯用線材６を前後方向および左右方向に移動不能に規制するものである。
　図２、３の例では、線材挿通孔１２は、前後方向に離れたラム１０の前面とカッティングダイ１４の後面とで形成される。カッティングダイ１４の後面は、その左右方向中央部には前方に突出するリブ１４ｒを備える。そして務歯用線材６は、一対の脚部６ｂ、６ｂの間にリブ１４ｒを左右から挟むようにして左右方向を位置決めされ、リブ１４ｒとラム１０との前後間に務歯用線材６の頭部６ａを前後から挟むようにして位置決めされる。
　図８の例では、線材挿通孔１２は、務歯用線材６より僅かに大きなＹ字状の断面形状の孔である。またラム１０とカッティングダイ１４は、線材挿通孔１２以外の部分では前後方向に接している。 The ram 10 and the cutting die 14 are attached to a frame (not shown) so as to be capable of linear reciprocation in the front-rear direction. In addition, the ram 10 and the cutting die 14 are provided with a wire insertion hole 12 for inserting the toothed wire 6 between them. The wire rod insertion hole 12 penetrates in the vertical direction and restricts the dentistry wire rod 6 so as not to move in the front-rear direction and the left-right direction.
2 and 3, the wire insertion hole 12 is formed by the front surface of the ram 10 and the rear surface of the cutting die 14 that are separated in the front-rear direction. The rear surface of the cutting die 14 is provided with a rib 14r protruding forward at the center in the left-right direction. The dentition wire 6 is positioned in the left-right direction so that the rib 14r is sandwiched from the left and right between the pair of legs 6b, 6b, and the head 6a of the dentition wire 6 between the rib 14r and the ram 10 is front and rear. Is positioned so as to be sandwiched from the front and rear.
In the example of FIG. 8, the wire rod insertion hole 12 is a hole having a Y-shaped cross-sectional shape slightly larger than that of the dental wire 6. The ram 10 and the cutting die 14 are in contact with each other in the front-rear direction at portions other than the wire insertion hole 12.
　カッティングダイ１４とカッティングパンチ２０とは、務歯用線材６を共同して前後方向にせん断すると共に相対的に前後方向に摺動可能な刀身部１５，２１をそれぞれ備える。 The cutting die 14 and the cutting punch 20 are respectively provided with blade parts 15 and 21 that jointly shear the dentition wire 6 in the front-rear direction and relatively slide in the front-rear direction.
　カッティングパンチ２０第一例は図２～５に示すように、前述した刀身部２１の他に、刀身部２１の後部を図示しないフレームに固定するための固定部２７を備える。 2 to 5, the first example of the cutting punch 20 includes a fixing portion 27 for fixing the rear portion of the blade portion 21 to a frame (not shown) in addition to the blade portion 21 described above.
　固定部２７は、刀身部２１の後部から上方向に突出すると共に、前後方向に貫通する貫通穴２７ａを備えている。この貫通穴２７ａに図示しないボルトを挿通して、支持部材２８にボルト止めする。ちなみに支持部材２８はフレームに対して固定される。 The fixing part 27 includes a through hole 27a that protrudes upward from the rear part of the blade part 21 and penetrates in the front-rear direction. A bolt (not shown) is inserted into the through hole 27 a and is bolted to the support member 28. Incidentally, the support member 28 is fixed to the frame.
　カッティングパンチ２０の刀身部２１は図１に示すように、板状の刃板部２２と、刃板部２２から下方に突出する凸部２３と、刃板部２２および凸部２３によって形成されると共に前方から視て上方へ凹む凹溝部２３ｓとを備える。 As shown in FIG. 1, the blade portion 21 of the cutting punch 20 is formed by a plate-shaped blade plate portion 22, a convex portion 23 protruding downward from the blade plate portion 22, and the blade plate portion 22 and the convex portion 23. And a recessed groove 23s that is recessed upward as viewed from the front.
　凸部２３は、前方から視て、カッティングダイ１４に対して摺動可能であると共に左右方向に離れた一対の摺動子２４，２５を備える。一対の摺動子２４，２５は、刃板部２２に比べて左右方向の幅の狭い板状であり、刃板部２２の下面の左右側部において前後方向全長に亘って延長する。
　凸部２３の下面２３ａは、ラム１０とカッティングダイ１４の上面の左右側部に対して摺接する摺接面２３ａである。摺接面２３ａは、一対の摺動子２４，２５の下面２４ａ，２５ａによって構成される。各摺動子２４，２５の下面２４ａ，２５ａは、摺接面２３ａの一部、つまり摺接面部２４ａ，２５ａである。摺接面２３ａは一対の摺接面部２４ａ，２５ａによって構成され、前後方向および左右方向に延長する同一の平面上に位置する。一対の摺動子２４，２５は、区別する必要がある場合には、第１、第２の摺動子と称する。 The convex portion 23 includes a pair of sliders 24 and 25 that are slidable with respect to the cutting die 14 and separated in the left-right direction when viewed from the front. The pair of sliders 24 and 25 has a plate shape that is narrower in the left-right direction than the blade plate portion 22, and extends over the entire length in the front-rear direction at the left and right side portions of the lower surface of the blade plate portion 22.
The lower surface 23 a of the convex portion 23 is a sliding contact surface 23 a that is in sliding contact with the left and right side portions of the upper surface of the ram 10 and the cutting die 14. The sliding contact surface 23a is constituted by the lower surfaces 24a and 25a of the pair of sliders 24 and 25. The lower surfaces 24a and 25a of the sliders 24 and 25 are a part of the sliding contact surface 23a, that is, the sliding contact surface portions 24a and 25a. The slidable contact surface 23a is constituted by a pair of slidable contact surface portions 24a and 25a, and is located on the same plane extending in the front-rear direction and the left-right direction. The pair of sliders 24 and 25 will be referred to as first and second sliders when it is necessary to distinguish them.
　刃板部２２は、前面（せん断するときに務歯用線材６が接近する方を向く面）の左右方向の中央部には刃面２２ａを備えると共に、下面の左右方向の中央部には刃面２２ａに対して交差すると共にカッティングダイ１４から離れるように摺接面２３ａに対して段差状に上方に凹んだ位置の非摺接面２２ｃを備える。 The blade plate portion 22 includes a blade surface 22a at the center in the left-right direction on the front surface (the surface facing the direction toward which the dental wire 6 approaches when shearing), and a blade at the center in the left-right direction on the bottom surface. A non-sliding contact surface 22c is provided at a position that intersects the surface 22a and is recessed upward in a stepped manner with respect to the sliding contact surface 23a so as to be separated from the cutting die 14.
　刃面２２ａは図７に示すように、務歯用線材６の頭部６ａと一対の脚部６ｂ、６ｂに衝突するために、刃板部２２の前面において後方に凹んだ凹形状である。刃面２２ａの左右方向の幅は、前端が最も広く、後方へ向かうにつれて狭くなっている。また刃面２２ａはその内側に内部空間２２ｓを形成するものである。内部空間２２ｓは、線材挿通孔１２の貫通方向でもある上下方向に貫通すると共に、せん断するときに務歯用線材６が相対的に接近する方向、つまり前方向に開口するものである。 As shown in FIG. 7, the blade surface 22 a has a concave shape that is recessed backward on the front surface of the blade plate portion 22 in order to collide with the head portion 6 a and the pair of leg portions 6 b, 6 b of the dental tooth wire 6. The width of the blade surface 22a in the left-right direction is the widest at the front end and narrows toward the rear. The blade surface 22a forms an internal space 22s inside thereof. The internal space 22s penetrates in the vertical direction, which is also the penetration direction of the wire insertion hole 12, and opens in the direction in which the dental wire 6 relatively approaches when shearing, that is, in the front direction.
　カッティングパンチ２０の非摺接面２２ｃは図１に示すように、左右方向および前後方向に延長する平面である。またカッティングパンチ２０の非摺接面２２ｃの前端は、刃面２２ａの下端でもあり、非摺接面２２ｃの前端における左右方向の幅２３ｗは、刃面２２ａの下端であって且つ前端における左右方向の幅２２ｗと同じ寸法になっている。またカッティングパンチ２０の非摺接面２２ｃと一対の摺動子２４，２５の左右方向の対向面２４ｂ、２５ｂとが、凹溝部２３ｓを形成する。 The non-sliding contact surface 22c of the cutting punch 20 is a plane extending in the left-right direction and the front-rear direction as shown in FIG. The front end of the non-sliding contact surface 22c of the cutting punch 20 is also the lower end of the blade surface 22a. The left-right width 23w at the front end of the non-sliding contact surface 22c is the lower end of the blade surface 22a and the left-right direction at the front end. It has the same dimensions as the width 22w of the. Further, the non-sliding contact surface 22c of the cutting punch 20 and the left and right facing surfaces 24b, 25b of the pair of sliders 24, 25 form a concave groove 23s.
　凹溝部２３ｓは、その内側に内部空間２３ｂを備え、内部空間２３ｂは、刃面２２ａ側から視て凸部２３の一対の摺動子２４，２５によって左右を仕切られると共に、刃板部２２によって上方を仕切られたものである。また凹溝部２３ｓの内側の内部空間２３ｂは、カッティングパンチ２０を前後方向に貫通すると共に下方に開口している。
　凹溝部２３ｓは、せん断後に残った務歯用線材６の先端部（上端部）が通過する部分である。凹溝部２３ｓの深さは、その前端の深さ２３ｈを基準とし、その前端から後端に亘って前端の深さ２３ｈ以上とし、図示の例では、その前後長の全長に亘って、前端の深さ２３ｈと同じにしてある。
　また凹溝部２３ｓの左右方向の幅は、非摺接面２２ｃの前端における左右方向の幅２３ｗを基準とし、その上下方向および前後方向の全長に亘って、非摺接面２２ｃの前端における左右方向の幅２３ｗ以上とし、図示の例では、非摺接面２２ｃの前端における左右方向の幅２３ｗと同じにしてある。 The recessed groove portion 23 s includes an inner space 23 b on the inner side, and the inner space 23 b is partitioned from the left and right by a pair of sliders 24 and 25 of the convex portion 23 as viewed from the blade surface 22 a side, and by the blade plate portion 22. The top is partitioned. Further, the internal space 23b inside the concave groove 23s penetrates the cutting punch 20 in the front-rear direction and opens downward.
The concave groove portion 23s is a portion through which the distal end portion (upper end portion) of the dentistry wire 6 remaining after shearing passes. The depth of the groove 23s is set to a depth of 23h or more from the front end to the rear end on the basis of the depth 23h of the front end. In the illustrated example, the depth of the front end is extended over the entire length of the front and rear. The depth is the same as 23h.
The width of the concave groove 23s in the left-right direction is based on the width 23w in the left-right direction at the front end of the non-sliding contact surface 22c, and the left-right direction at the front end of the non-sliding contact surface 22c over the entire length in the vertical direction and front-rear direction. The width 23w is equal to or greater than the width 23w in the left-right direction at the front end of the non-sliding contact surface 22c.
　カッティングダイ１４は図４、５に示すように、その上部を刀身部１５とするものである。またカッティングダイ１４の刀身部１５は、カッティングパンチ２０の刀身部２１とは相違して凸部が無いことから、板状の刃板部１６のみを備える。
　刀身部１５（刃板部１６）は、その後面のうち線材挿通孔１２に位置する部分を、せん断するときに務歯用線材６に衝突する刃面１５ａとする。また刀身部１５（刃板部１６）は、カッティングパンチ２０に対向する面、つまりその上面が前後方向および左右方向に延長する平面であり、その上面のうち左右方向中央部が、カッティングパンチ２０の非摺接面２２ｃに対して上下方向に離れる部分であり、非摺接面１５ｂである。また刀身部１５（刃板部１６）の上面の左右側部は、凸部２３の下面（摺接面２３ａ）に対向して摺接する摺接面１５ｃである。 As shown in FIGS. 4 and 5, the cutting die 14 has a blade portion 15 at the top. Unlike the blade part 21 of the cutting punch 20, the blade part 15 of the cutting die 14 has only a plate-like blade plate part 16 because there is no convex part.
In the blade portion 15 (blade plate portion 16), a portion of the rear surface located in the wire insertion hole 12 is a blade surface 15a that collides with the toothed wire 6 when shearing. The blade portion 15 (blade plate portion 16) is a surface facing the cutting punch 20, that is, a flat surface whose upper surface extends in the front-rear direction and the left-right direction. It is a part which leaves | separates to the up-down direction with respect to the non-sliding contact surface 22c, and is the non-sliding contact surface 15b. The left and right side portions of the upper surface of the blade portion 15 (blade plate portion 16) are slidable contact surfaces 15c that slidably contact the lower surface (slidable contact surface 23a) of the convex portion 23.
　またラム１０の上面も、カッティングダイ１４の上面と同一平面に位置するもので、その左右方向中央部がカッティングダイ１４の下面に対して上下方向に離れる部分であり、非摺接面（符号省略）である。またラム１０の上面の左右側部は、凸部２３の下面（摺接面２３ａ）に対向して摺接する摺接面（符号省略）である。 The upper surface of the ram 10 is also located on the same plane as the upper surface of the cutting die 14, and its central portion in the left-right direction is a portion away from the lower surface of the cutting die 14 in the vertical direction. ). Further, the left and right side portions of the upper surface of the ram 10 are slidable contact surfaces (reference numerals omitted) facing the lower surface (slidable contact surface 23 a) of the convex portion 23.
　上記したせん断加工部２は以下のようにして務歯用線材６をせん断する。
　１）務歯用線材６が務歯素材７の１個の厚み分だけカッティングダイ１４の摺接面１５ｃから上方に突出しているものとする。またこのときラム１０は、前進限の位置とする。
　２）ラム１０が前進限の位置から後退する。そうするとカッティングダイ１４とフォーミングダイ３０は、ラム１０と一緒に後退する。
　３）ラム１０の後退中に、図５に示すようにカッティングパンチ２０の刃面２２ａが務歯用線材６の上端部の後面に衝突し、その反動でカッティングダイ１４の刃面１５ａが務歯用線材６の前面に衝突し、図６に示すようにカッティングダイ１４とカッティングパンチ２０とは共同して務歯用線材６の上端部をせん断し、務歯素材７が切り離される。
　このせん断のときに、カッティングダイ１４とカッティングパンチ２０の刃面１５ａ，２２ａ同士が上下方向に離れているので、これら刃面１５ａ，２２ａは摺動運動のときに互いに接触しないことから損傷せずに済み、互いの耐久性が向上する。しかもカッティングダイ１４とカッティングパンチ２０とは、凸部２３の位置において上下方向に対向して摺接する摺接面１５ｃ，２３ａを備えると共に、一対の刃面１５ａ，２２ａに対して摺接面１５ｃ、２３ｃを左右に配置してあるので、たとえば一対の刃面に対して左右の片側だけに摺接面を備えるものに比べれば、カッティングダイ１４とカッティングパンチ２０との相対的な摺動運動が安定する。 The above-described shearing portion 2 shears the dental wire 6 as follows.
1) It is assumed that the dentition wire 6 protrudes upward from the sliding contact surface 15 c of the cutting die 14 by the thickness of one dentition material 7. At this time, the ram 10 is set to the forward limit position.
2) The ram 10 moves backward from the forward limit position. Then, the cutting die 14 and the forming die 30 are retracted together with the ram 10.
3) While the ram 10 is retracted, the blade surface 22a of the cutting punch 20 collides with the rear surface of the upper end portion of the service wire 6 as shown in FIG. As shown in FIG. 6, the cutting die 14 and the cutting punch 20 jointly shear the upper end portion of the service tooth wire 6, and the service tooth material 7 is separated.
During this shearing, the blade surfaces 15a and 22a of the cutting die 14 and the cutting punch 20 are separated from each other in the vertical direction. Therefore, the blade surfaces 15a and 22a are not damaged because they do not contact each other during the sliding motion. This improves the durability of each other. In addition, the cutting die 14 and the cutting punch 20 are provided with sliding surfaces 15c and 23a that are in sliding contact with each other in the vertical direction at the position of the convex portion 23, and are slidable with respect to the pair of blade surfaces 15a and 22a. Since 23c is arranged on the left and right, the relative sliding motion between the cutting die 14 and the cutting punch 20 is stable as compared with, for example, those having sliding contact surfaces on only one side of the pair of blade surfaces. To do.
　頭部加工部３は図８に示すように、せん断加工部２の一部でもあるカッティングパンチ２０と、カッティングダイ１４に対して前方向に一直線に整列すると共にカッティングパンチ２０に対して前後方向に相対的に摺動可能であるフォーミングダイ３０と、カッティングパンチ２０に対して前方に離隔して配置されると共にフォーミングダイ３０に対して上下方向に往復動可能なフォーミングパンチ３２と、フォーミングパンチ３２に対して前方に離隔して配置されると共にフォーミングパンチ３２に対して上下方向に往復動可能なプレッシャパッド３４とを備える。そして頭部加工部３は、務歯素材７の頭部７ａをフォーミングダイ３０とフォーミングパンチ３２とが共同して塑性加工して噛合凸部と噛合凹部とを成形し、プレッシャパッド３４が塑性加工するときに務歯素材７の一対の脚部を押さえるものである。 As shown in FIG. 8, the head processing unit 3 is aligned with the cutting punch 20 that is also a part of the shearing processing unit 2 and the cutting die 14 in a straight line in the forward direction and in the front-rear direction with respect to the cutting punch 20. A forming die 30 that is relatively slidable, a forming punch 32 that is spaced forward from the cutting punch 20 and that can reciprocate vertically with respect to the forming die 30, and the forming punch 32 On the other hand, a pressure pad 34 is provided that is spaced forward from the forming punch 32 and can reciprocate in the vertical direction with respect to the forming punch 32. Then, the head processing section 3 plastically processes the head 7a of the tooth material 7 by the forming die 30 and the forming punch 32 to form a meshing convex portion and a meshing concave portion, and the pressure pad 34 is plastically processed. When pressing, the pair of leg portions of the engagement tooth material 7 are pressed.
　フォーミングパンチ３２とプレッシャパッド３４はフレームに対して上下方向に直線往復動可能に取り付けられる。フォーミングダイ３０はフレームに対して前後方向に直線往復動可能に取り付けられる。またフォーミングダイ３０は図１０に示すように、その上面にはカッティングパンチ２０に対する摺接面（符号省略）を備えると共に、その上面の後端部であって線材挿通孔１２に対して後方には下方に凹むと共に務歯素材７を収容する成形型部（符号省略）を備える。 The forming punch 32 and the pressure pad 34 are attached to the frame so as to be linearly reciprocable. The forming die 30 is attached to the frame so as to be linearly reciprocable in the front-rear direction. Further, as shown in FIG. 10, the forming die 30 has a sliding contact surface (reference numeral omitted) on the upper surface of the forming die 30, and at the rear end of the upper surface and behind the wire insertion hole 12. A molding die part (reference numeral omitted) is provided which is recessed downward and accommodates the tooth material 7.
　上記した頭部加工部３は、せん断加工部２での３）の処理の後に、以下のようにして務歯素材７を塑性加工する。
　４）せん断加工部２で務歯素材７を切り離した後に、ラム１０がさら後退すると、務歯素材７はカッティングパンチ２０の刃面２２ａに接触したまま押し出される。このとき、凹溝部２３ｓの内部空間２３ｂを務歯用線材６の上端部は通過する。
　５）ラム１０が後退限の位置に達すると、務歯素材７はフォーミングダイ３０の成形型部の真上に達する。続いて成形型部の上方からフォーミングパンチ３２とプレッシャパッド３４が下降して、プレッシャパッド３４が一対の脚部を規制すると共に、フォーミングパンチ３２が務歯素材７の頭部７ａを成形型部の底面へ向かって押し込み、頭部７ａには噛合凸部と噛合凹部が形成される。
　６）フォーミングパンチ３２とプレッシャパッド３４が上昇する The head processing part 3 described above plastically processes the tooth material 7 in the following manner after the process 3) in the shearing part 2.
4) When the ram 10 is further retracted after cutting the dentition material 7 at the shearing portion 2, the dentition material 7 is pushed out while being in contact with the blade surface 22 a of the cutting punch 20. At this time, the upper end portion of the dentition wire 6 passes through the internal space 23b of the groove portion 23s.
5) When the ram 10 reaches the retreat limit position, the tooth material 7 reaches directly above the forming die portion of the forming die 30. Subsequently, the forming punch 32 and the pressure pad 34 are lowered from above the mold part, and the pressure pad 34 regulates the pair of leg parts, and the forming punch 32 moves the head 7a of the tooth material 7 to the mold part. Pushing toward the bottom surface, the head 7a is formed with a meshing convex part and a meshing concave part.
6) The forming punch 32 and the pressure pad 34 rise.
　取付加工部４は図８に示すように、頭部加工部３の一部でもあるフォーミングダイ３０と、フォーミングダイ３０に対して前方においてファスナーテープ８を上方向に間欠的に供給する図示しないテープ供給装置と、フォーミングダイ３０に対して上方において左右方向に間隔をあけて配置されると共に噛合凸部と噛合凹部とが成形された務歯素材７に対してその一対の脚部を挟んでファスナーテープ８に固定する一対のサイドパンチ４０，４０とを備える。 As shown in FIG. 8, the attachment processing portion 4 includes a forming die 30 that is also a part of the head processing portion 3, and a tape (not shown) that intermittently supplies the fastener tape 8 upward in front of the forming die 30. Fastener with a pair of legs sandwiched between the feeding device 7 and the working tooth material 7 formed with a meshing convex part and a meshing concave part at an interval in the left-right direction above the forming die 30 A pair of side punches 40, 40 fixed to the tape 8 are provided.
　取付加工部４は、頭部加工部３での６）の処理の後に、以下のようにして務歯素材７をファスナーテープ８に取り付ける。
　７）頭部加工部３での６）の処理、つまりフォーミングパンチ３２とプレッシャパッド３４が上昇する処理と相前後して、ラム１０が前進し、カッティングダイ１４とフォーミングダイ３０とを前進させ、フォーミングダイ３０の前端部をファスナーテープ８に接近させる。ラム１０が前進限の位置に達すると、成形型部内に収容された務歯素材７の一対の脚部がファスナーテープ８の左右両側に配置され、一対のサイドパンチ４０，４０が一対の脚部の左右外側に配置されている。
　８）一対のサイドパンチ４０，４０が一対の脚部をその左右の間隔を狭めるように押し込んで、一対の脚部の間にファスナーテープ８が挟持される。
　９）ファスナーテープ８が所定長さだけ上昇し、停止する。
　１０）７）のようにラム１０が前進すると、カッティングパンチ２０の刃面２２ａは務歯素材７から離れ、ラム１０が前進限に達すると、カッティングパンチ２０の刃面２２ａの前方には務歯用線材６が供給可能となる。そして図示しない線材供給装置が務歯用線材６を務歯素材１個分の厚みだけカッティングダイ１４の摺接面１５ｃよりも上方に供給する。そうするとせん断加工部２での１）の状態に戻る。
　１１）以後２）から１０）を繰り返すことにより、務歯がファスナーテープ８に取り付けられる。 The attachment processing part 4 attaches the tooth material 7 to the fastener tape 8 as follows after the processing of 6) in the head processing part 3.
7) The ram 10 moves forward and the cutting die 14 and the forming die 30 move forward in synchronism with the processing of 6) in the head machining section 3, that is, the processing of raising the forming punch 32 and the pressure pad 34. The front end portion of the forming die 30 is brought close to the fastener tape 8. When the ram 10 reaches the forward limit position, the pair of leg portions of the tooth material 7 accommodated in the mold part are disposed on the left and right sides of the fastener tape 8, and the pair of side punches 40, 40 are the pair of leg portions. It is arranged on the left and right outside.
8) The pair of side punches 40, 40 push the pair of leg portions so as to narrow the left and right intervals, and the fastener tape 8 is sandwiched between the pair of leg portions.
9) The fastener tape 8 rises by a predetermined length and stops.
10) When the ram 10 moves forward as in 7), the blade surface 22a of the cutting punch 20 moves away from the toothing material 7, and when the ram 10 reaches the advance limit, the toothing teeth are placed in front of the blade surface 22a of the cutting punch 20. The wire 6 can be supplied. Then, a wire rod supply device (not shown) feeds the dentition wire 6 above the sliding contact surface 15c of the cutting die 14 by the thickness of one dentition material. If it does so, it will return to the state of 1) in the shearing process part 2. FIG.
11) After that, by repeating steps 2) to 10), the tooth is attached to the fastener tape 8.
　上記した第一実施形態の務歯成形装置１のせん断加工部２は、カッティングパンチ２０の第一例だけに限らず、図９に示すカッティングパンチ２０の第二例や、図１０に示すカッティングパンチ２０の第三例を用いても良い。 The shearing portion 2 of the engagement gear forming apparatus 1 of the first embodiment described above is not limited to the first example of the cutting punch 20, but the second example of the cutting punch 20 shown in FIG. 9 or the cutting punch shown in FIG. Twenty third examples may be used.
　カッティングパンチ２０の第二例は図９に示すように、凸部２３の形状をカッティングパンチ２０の第一例と相違させたものである。より詳しくは以下の通りである。
　凸部２３を構成する一対の摺動子２４，２５は、その左右方向の幅を、第一例における一対の摺動子の左右方向の幅よりも狭くしたものである。そのため、左右方向に関して、カッティングパンチ２０の非摺接面２２ｃは、刃面２２ａの左右方向の中央部に位置しており、カッティングパンチ２０の非摺接面２２ｃは、刃面２２ａに対して左右両側に広がっている。より詳しく言えば、非摺接面２２ｃの前端における左右方向の幅２３ｗは、刃面２２ａの下端であって且つ前端における左右方向の幅２２ｗに対して広く形成されている。 As shown in FIG. 9, the second example of the cutting punch 20 is different from the first example of the cutting punch 20 in the shape of the convex portion 23. More details are as follows.
The pair of sliders 24 and 25 constituting the convex portion 23 has a lateral width narrower than a lateral width of the pair of sliders in the first example. Therefore, in the left-right direction, the non-sliding contact surface 22c of the cutting punch 20 is located at the center in the left-right direction of the blade surface 22a, and the non-sliding contact surface 22c of the cutting punch 20 is left and right with respect to the blade surface 22a. Spread on both sides. More specifically, the width 23w in the left-right direction at the front end of the non-sliding contact surface 22c is formed lower than the lower end of the blade surface 22a and the width 22w in the left-right direction at the front end.
　カッティングパンチ２０の第三例は図１０に示すように、凸部２３の形状をカッティングパンチ２０の第一例と相違させたものである。より詳しくは以下の通りである。
　凸部２３は、下方から視て、コ字状であり、刃面２２ａの後方において左右に離れた第１、第２の摺動子２４，２５と、第１、第２の摺動子２４，２５の後部間を接続する第３の摺動子２６とを備えるものである。これら摺動子２４，２５，２６の第１、第２、第３の摺接面部２４ａ，２５ａ，２６ａは、左右方向と前後方向に延長する一つの平面上に配置されている。そして凹溝部２３ｓの内側に形成される内部空間２３ｂは、前後方向に延長するもので、左右方向を第１、第２の摺動子２４，２５によって仕切られ、上方向を刃板部２２によって仕切られ、後方を第３の摺動子２６によって仕切られている。また非摺接面２２ｃは、刃板部２２の下面のうち凸部２３以外の部分、つまり左右方向の中央部で且つ前部にのみ形成されている。 As shown in FIG. 10, the third example of the cutting punch 20 is different from the first example of the cutting punch 20 in the shape of the convex portion 23. More details are as follows.
The convex portion 23 has a U-shape when viewed from below, and the first and second sliders 24 and 25 and the first and second sliders 24 separated from each other on the rear side of the blade surface 22a. , 25 and a third slider 26 for connecting the rear portions. The first, second, and third sliding contact surface portions 24a, 25a, and 26a of the sliders 24, 25, and 26 are disposed on a single plane that extends in the left-right direction and the front-rear direction. The inner space 23b formed inside the concave groove 23s extends in the front-rear direction, and is partitioned by the first and second sliders 24, 25 in the left-right direction, and by the blade plate part 22 in the upper direction. It is partitioned and the rear is partitioned by the third slider 26. The non-sliding contact surface 22c is formed only on the lower surface of the blade plate portion 22 other than the convex portion 23, that is, the central portion in the left-right direction and the front portion.
　本発明の第二実施形態の務歯成形装置のせん断加工部は、カッティングパンチ２０の第四例を使用するものである。
　カッティングパンチ２０の第四例は図１１に示すように、凹溝部２３ｓの深さをカッティングパンチ２０の第一例よりも深くしたものである。またカッティングダイ１４は図１２に示すように、カッティングパンチ２０の第四例に対応させて、その上部の刀身部１５の形状を変更してある。カッティングパンチ２０とカッティングダイ１４との関係の詳細は、以下の通りである。 The shearing part of the engagement gear forming apparatus of the second embodiment of the present invention uses the fourth example of the cutting punch 20.
As shown in FIG. 11, the fourth example of the cutting punch 20 is such that the depth of the concave groove 23 s is deeper than that of the first example of the cutting punch 20. Further, as shown in FIG. 12, the cutting die 14 has the shape of the blade portion 15 at the upper part thereof changed in correspondence with the fourth example of the cutting punch 20. Details of the relationship between the cutting punch 20 and the cutting die 14 are as follows.
　カッティングパンチ２０とカッティングダイ１４とは、共同して、務歯用線材６をせん断するものである。したがってカッティングパンチ２０の刃面２２ａの下端と、カッティングダイ１４の刃面１５ａの上端との上下方向の間隔は、せん断された務歯素材７の製品形状（せん断精度）に影響を与えるので、務歯素材７が要求される精度に対応して所定間隔に定められる。ここでカッティングパンチ２０の第四例は、凹溝部２３ｓの前端の深さ２３ｈを、カッティングパンチ２０の第一例の凹溝部２３ｓのそれよりも深くしてある。この場合に、たとえばカッティングダイ１４の上面が前後左右方向に延長する一つの平面であると、カッティングパンチ２０の刃面２２ａの下端とカッティングダイ１４の刀身部１５の上端との上下方向の間隔が、前記した所定間隔よりも広くなり、所望のせん断精度を得られないことがある。
　したがってカッティングダイ１４の形状は、カッティングパンチ２０の第四例に合わせたものとしてある。カッティングダイ１４の刀身部１５は、刃板部１６のみを備えるものであり、左右方向および前後方向に延長する刃板本体部１６ａと、刃板本体部１６ａの左右方向の中央部から上方に突出する隆起部１６ｂを備えるものである。隆起部１６ｂの上面は、カッティングパンチ２０の非摺接面２２ｃに対向する部分であって、カッティングダイ１４の非摺接面１５ｂである。刃板本体部１６ａの上面のうちカッティングパンチ２０の凸部２３に対向する部分は、カッティングダイ１４の摺接面１５ｃである。 The cutting punch 20 and the cutting die 14 jointly shear the dental gear wire 6. Accordingly, the vertical distance between the lower end of the blade surface 22a of the cutting punch 20 and the upper end of the blade surface 15a of the cutting die 14 affects the product shape (shear accuracy) of the sheared tooth material 7, so that The tooth material 7 is set at a predetermined interval corresponding to the required accuracy. Here, in the fourth example of the cutting punch 20, the depth 23h of the front end of the groove 23s is deeper than that of the groove 23s of the first example of the cutting punch 20. In this case, for example, if the upper surface of the cutting die 14 is one plane extending in the front-rear and left-right directions, the vertical distance between the lower end of the blade surface 22a of the cutting punch 20 and the upper end of the blade portion 15 of the cutting die 14 is , It becomes wider than the above-mentioned predetermined interval, and the desired shear accuracy may not be obtained.
Accordingly, the shape of the cutting die 14 is adapted to the fourth example of the cutting punch 20. The blade portion 15 of the cutting die 14 includes only the blade plate portion 16, and protrudes upward from the blade plate main body portion 16a extending in the left-right direction and the front-rear direction, and the central portion in the left-right direction of the blade plate main body portion 16a. The protruding portion 16b is provided. The upper surface of the raised portion 16 b is a portion facing the non-sliding contact surface 22 c of the cutting punch 20 and is the non-sliding contact surface 15 b of the cutting die 14. A portion of the upper surface of the blade plate main body 16 a that faces the convex portion 23 of the cutting punch 20 is a sliding contact surface 15 c of the cutting die 14.
　カッティングパンチ２０の第五例は図１３に示すように、凹溝部２３ｓの深さと、凸部２３の形状をカッティングパンチ２０の第一例と相違させたものである。より詳しくは以下の通りである。
　凹溝部２３ｓの深さは、カッティングパンチ２０の第四例の凹溝部２３ｓの深さと同じく、凹溝部２３ｓの前端の深さ２３ｈを、カッティングパンチ２０の第一例の凹溝部２３ｓのそれよりも深くしてある。
　凸部２３は、左右及び前後に離れた一対の摺動子２４，２５を備えるものである。これら一対の摺動子２４，２５の下面は、摺接面部２４ａ，２５ａであり、左右方向と前後方向に延長する一つの平面上に配置されている。また一対の摺動子２４，２５は、前後に離れているが、左右にも離れているので、凸部２３は、刃面２２ａ側から視て、刃面２２ａを中心にして左右方向の両側に離れる一対の摺動子２４，２５を備えている。 As shown in FIG. 13, the fifth example of the cutting punch 20 is different from the first example of the cutting punch 20 in the depth of the concave groove 23 s and the shape of the convex 23. More details are as follows.
The depth of the groove 23s is the same as the depth of the groove 23s of the fourth example of the cutting punch 20, and the depth 23h of the front end of the groove 23s is made larger than that of the groove 23s of the first example of the cutting punch 20. It ’s deep.
The convex part 23 is provided with a pair of sliders 24 and 25 separated from each other in the left and right and front and rear directions. The lower surfaces of the pair of sliders 24 and 25 are slidable contact surface portions 24a and 25a, and are arranged on one plane extending in the left-right direction and the front-rear direction. Further, the pair of sliders 24 and 25 are separated from each other in the front-rear direction, but are also separated from each other in the left-right direction. A pair of sliders 24 and 25 are provided.
　本発明は上記実施形態に限定されるものではなく、その趣旨を逸脱しない範囲において適宜変更可能である。例えば、カッティングダイ１４とカッティングパンチ２０は、いずれの実施形態でも、上下非対称形状であったが、本発明はこれに限らず、上下対称形状であっても良い。たとえば図示しないがカッティングダイの刀身部は、カッティングパンチの第一例と同様に、前後方向および左右方向に延長する板状の刃板部と、刃板部の左右から上方に突出する凸部とを備えるものであっても良い。 The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, the cutting die 14 and the cutting punch 20 have a vertically asymmetric shape in any of the embodiments, but the present invention is not limited to this and may have a vertically symmetric shape. For example, although not shown, the blade portion of the cutting die includes a plate-like blade plate portion extending in the front-rear direction and the left-right direction, and a convex portion protruding upward from the left and right of the blade plate portion, as in the first example of the cutting punch. May be provided.
　１　務歯成形装置
　２　せん断加工部
　１０　ラム
　１２　線材挿通孔
　１４　カッティングダイ
　１４ｒ　リブ
　１５　刀身部
　１５ａ　刃面
　１５ｂ　非摺接面
　１５ｃ　摺接面
　１６　刃板部
　１６ａ　刃板本体部
　１６ｂ　隆起部
　２０　カッティングパンチ
　２１　刀身部
　２２　刃板部
　２２ａ　刃面
　２２ｃ　非摺接面
　２２ｓ　内部空間
　２２ｗ　刃面の下端であって且つ前端における左右方向の幅
　２３　凸部
　２３ａ　摺接面
　２３ｂ　内部空間
　２３ｈ　凹溝部の前端の深さ
　２３ｓ　凹溝部
　２３ｗ　非摺接面の前端における左右方向の幅
　２４　第１の摺動子
　２４ａ　第１の摺接面部
　２４ｂ　第２の摺動子に対向する対向面
　２５　第２の摺動子
　２５ａ　第２の摺接面部
　２５ｂ　第１の摺動子に対向する対向面
　２６　第３の摺動子
　２６ａ　第３の摺接面部
　２７　固定部
　２７ａ　貫通穴
　２８　支持部材
　３　頭部加工部
　３０　フォーミングダイ
　３２　フォーミングパンチ
　３４　プレッシャパッド
　４　取付加工部
　４０サイドパンチ
　６　務歯用線材
　６ａ　頭部
　６ｂ　脚部
　７　務歯素材
　７ａ　頭部
　８　ファスナーテープ DESCRIPTION OF SYMBOLS 1 Service gear forming apparatus 2 Shear processing part 10 Ram 12 Wire rod insertion hole 14 Cutting die 14r Rib 15 Blade part 15a Blade surface 15b Non-sliding contact surface 15c Sliding contact surface 16 Blade plate part 16a Blade plate main body part 16b Protrusion part 20 Cutting punch 21 Blade portion 22 Blade plate portion 22a Blade surface 22c Non-sliding contact surface 22s Internal space 22w Width in the left-right direction at the lower end of the blade surface and at the front end 23 Protruding portion 23a Sliding contact surface 23b Internal space 23h Depth of the front end of the groove portion 23s Concave groove portion 23w Width in the left-right direction at the front end of the non-sliding surface 24 First slider 24a First sliding surface portion 24b Opposing surface facing the second slider 25 Second slider 25a Second sliding contact surface portion 25b Opposing surface facing the first slider 26 Third slider 26a Third sliding contact surface portion 27 Fixing portion 27a Through hole 28 Support member Head processing section 30 shaping die 32 forming punch 34 pressure pad 4 attached processing unit 40 side punches 6 engaging element for wire 6a head 6b legs 7 engaging element material 7a head 8 fastener tape

Claims (3)

  1. 　第一の直線方向に対して直交する第二の直線方向に対向するカッティングダイ（１４）とカッティングパンチ（２０）とを備え、
    　前記カッティングダイ（１４）と前記カッティングパンチ（２０）とは、一対の脚部（６ｂ、６ｂ）を頭部（６ａ）から二又に分岐した形状の務歯用線材（６）を共同して前記第一の直線方向にせん断すると共に相対的に前記第一の直線方向に摺動可能な刀身部（１５，２１）をそれぞれ備え、
    　一対の前記刀身部（１５，２１）は、前記第二の直線方向のうち前記カッティングダイ（１４）から前記カッティングパンチ（２０）に向かう方向に供給された前記務歯用線材（６）をせん断する刃板部（１６，２２）をそれぞれ備え、
    　少なくとも一方の前記刀身部（１５，２１）は、一対の前記刃板部（１６，２２）を前記第二の直線方向に離すために前記刃板部（１６，２２）から突出する凸部（２３）を備え、
    　一対の前記刀身部（１５，２１）は、前記凸部（２３）の位置において前記第二の直線方向に対向して摺接する摺接面（１５ｃ，２３ａ）をそれぞれ備え、
    　一対の前記刃板部（１６，２２）は、前記務歯用線材（６）に衝突する刃面（１５ａ，２２ａ）と、前記刃面（１５ａ，２２ａ）に対して交差する非摺接面（１５ｂ、２２ｃ）をそれぞれ備え、
    　一対の前記非摺接面（１５ｂ、２２ｃ）は前記第二の直線方向に離れることを特徴とするスライドファスナー用務歯成形装置。     A cutting die (14) and a cutting punch (20) facing a second linear direction orthogonal to the first linear direction,
    The cutting die (14) and the cutting punch (20) are used by jointly connecting a pair of leg portions (6b, 6b) from the head portion (6a) into a bifurcated tooth wire (6). A blade portion (15, 21) that shears in the first linear direction and is relatively slidable in the first linear direction,
    The pair of blade parts (15, 21) shears the tooth wire (6) supplied in the direction from the cutting die (14) toward the cutting punch (20) in the second linear direction. Each having a blade plate portion (16, 22)
    At least one of the blade parts (15, 21) has a convex part (16, 22) protruding from the blade plate part (16, 22) to separate the pair of blade plate parts (16, 22) in the second linear direction. 23)
    The pair of blade parts (15, 21) includes sliding contact surfaces (15c, 23a) that are in sliding contact with each other in the second linear direction at the position of the convex part (23),
    A pair of said blade board part (16, 22) is a non-sliding contact surface which cross | intersects with respect to the said blade surface (15a, 22a) and the blade surface (15a, 22a) which collides with the said tooth | gear material (6). (15b, 22c) respectively,
    A pair of non-sliding contact surfaces (15b, 22c) are separated from each other in the second linear direction.
  2. 　一対の脚部（６ｂ、６ｂ）を頭部（６ａ）から二又に分岐した形状の務歯用線材（６）をカッティングダイ（１４）と共同してせん断すると共に前記カッティングダイ（１４）に対して相対的に第一の直線方向に摺動可能な刀身部（２１）を備え、
    　前記刀身部（２１）は、前記第一の直線方向に対して直交する第二の直線方向のうち前記カッティングダイ（１４）から前記刀身部（２１）に向かう方向に供給された前記務歯用線材（６）をせん断する刃板部（２２）と、前記第二の直線方向のうち前記刃板部（２２）から前記カッティングダイ（１４）へ向かう方向に突出する凸部（２３）とを備え、
    　前記凸部（２３）は、前記カッティングダイ（１４）に対して摺接する摺接面（２３ａ）を備え、
    　前記刃板部（２２）は、前記務歯用線材（６）に衝突する刃面（２２ａ）と、前記刃面（２２ａ）に対して交差すると共に前記カッティングダイ（１４）から離れるように前記摺接面（２３ａ）に対して段差状に凹んだ位置の非摺接面（１５ｂ）を備えることを特徴とするスライドファスナー用務歯成形装置のカッティングパンチ。     A dental gear wire (6) having a shape in which a pair of legs (6b, 6b) is bifurcated from the head (6a) is sheared in cooperation with the cutting die (14) and applied to the cutting die (14). The blade portion (21) is relatively slidable in the first linear direction,
    The blade part (21) is supplied to the tooth component in a direction from the cutting die (14) toward the blade part (21) in a second linear direction orthogonal to the first linear direction. A blade plate portion (22) for shearing the wire (6) and a convex portion (23) protruding in the direction from the blade plate portion (22) toward the cutting die (14) in the second linear direction. Prepared,
    The convex portion (23) includes a sliding contact surface (23a) that comes into sliding contact with the cutting die (14),
    The blade plate portion (22) intersects the blade surface (22a) that collides with the toothed wire (6) and the blade surface (22a) and is separated from the cutting die (14). A cutting punch for a dental fastener forming device for a slide fastener, comprising a non-sliding contact surface (15b) at a position recessed in a step shape with respect to the sliding contact surface (23a).
  3. 　前記刃板部（２２）および前記凸部（２３）によって形成されると共に前記刃面２２ａ）側から視て前記第二の直線方向のうち前記凸部（２３）側から前記刃板部（２２）側へ向かう方向へ凹む凹溝部（２３ｓ）を備え、
    　前記凸部（２３）は、前記刃面（２２ａ）側から視て、前記カッティングダイ（１４）に対して摺動可能であると共に前記刃面（２２ａ）を中心にして前記第一、第二の直線方向の何れにも直交する第三の直線方向の両側に離れる一対の摺動子（２４，２５）を備えることを特徴とする請求項２に記載のスライドファスナー用務歯成形装置のカッティングパンチ。     The blade plate portion (22) and the convex portion (23) are formed by the blade plate portion (22) from the convex portion (23) side in the second linear direction as viewed from the blade surface 22a) side. ) With a concave groove (23s) recessed in the direction toward the side,
    The convex portion (23) is slidable with respect to the cutting die (14) when viewed from the blade surface (22a) side, and the first and second portions are centered on the blade surface (22a). A pair of sliders (24, 25) separated on both sides in a third linear direction orthogonal to any of the linear directions of the cutting fastener for a slide fastener service tooth forming device according to claim 2, .
PCT/JP2016/062012 2016-04-14 2016-04-14 Element head forming device for slide fastener and cutting punch WO2017179173A1 (en)

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CN201680084588.0A CN109153066B (en) 2016-04-14 2016-04-14 Zipper tooth forming device and cutting punch
PCT/JP2016/062012 WO2017179173A1 (en) 2016-04-14 2016-04-14 Element head forming device for slide fastener and cutting punch
TW106110767A TWI653106B (en) 2016-04-14 2017-03-30 Chain element forming device for zipper, cutting punch

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CN110102664B (en) * 2019-05-31 2024-03-26 广东顺德三扬科技股份有限公司 Protection mechanism of zipper machine and zipper tooth manufacturing device

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JPH071064A (en) * 1993-06-22 1995-01-06 Ykk Kk Method and device for forming of fastening teeth for slide fastener
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