JP4971099B2 - Tensioning auxiliary jig for wire drawing - Google Patents

Description

  The present invention relates to a drawing auxiliary jig for wire drawing.

  For wire drawing of a metal wire such as a trolley wire, a setup operation is required in which the tip portion is passed through a wire drawing die to draw a predetermined length. Furthermore, it was necessary to wind the drawn wire around the capstan.

Conventionally, it is difficult for a metal wire to be pulled out by a human hand during such a lead-out process, a traction member such as a chain or a wire is wound around the capstan, and the capstan is driven to rotate. As described in Patent Document 1, a wire member is gripped by a chuck member having a wedge-shaped claw member, connected to a pulling member, and pulled out. Moreover, there existed some which hold | wound so that a metal net | network material might be covered and hold | grip a wire with a frictional force.
Further, as a device for drawing a wire, a device for drawing a wire terminal gripper as described in Patent Document 2 along a rail is known.
Japanese Utility Model Publication No. 6-76437 JP 2007-216299 A

  In the wedge-type chuck member, the tip part inserted into the gripper interferes with the traction member, so that the swallowing allowance cannot be taken deeply, and the lead part that has been thinned to allow part of the tip part to be inserted into the die Therefore, it is easy to come out of the chuck member and there is a problem in terms of safety and workability. Further, since the finely processed lead portion is held, there is a problem in terms of safety and workability because it is easily broken (disconnected). In addition, there is a problem that a great deal of labor and time is spent on the time and effort required to drive and remove the wedge. Moreover, in the metal net member using the frictional force, the wire rod may come off from the net due to the pulling force, which causes a safety problem.

  Therefore, an object of the present invention is to provide a drawing auxiliary jig for wire drawing that can be easily and safely gripped and wound around a capstan without interfering with a pulling member.

  Therefore, in order to achieve the above object, the wire drawing tension auxiliary jig according to the present invention is used in the lead-out step of winding the wire rod drawn by the wire drawing die into the capstan that is pulled out from the die a plurality of times. A pulling assisting jig for connecting the wire and the other end of the traction member, one end of which is attached to the capstan, and comprising an eccentric cam with a toothed portion that is swung by an operating lever. A gripping member for gripping the leading end portion of the drawn and drawn wire, and a contact surface pivotably attached to the gripping member via a pivot pin and contacting a winding outer peripheral surface of the capstan A support member; and a connection member to which a support pin is pivotally attached to the support member via a connection pin and to which the other end of the traction member is attached. When the surface contacts the winding outer peripheral surface, The first axial center of the attachment pin is configured to be radially outward of the capstan from the second axial center of the connecting pin, and radially outward from the third axial center of the attachment pin. Is.

  In addition, the wire rod and the other of the pulling member attached at one end to the capstan during the lead-out step of winding the wire rod drawn by the wire drawing die to the capstan pulled out from the die a plurality of times. A pulling auxiliary jig for wire drawing, having an eccentric cam with a toothed portion that is swung by an operating lever, and a gripping member for gripping the leading end of the drawn wire, A support member pivotally attached to the holding member via a pivot pin and having a contact surface that contacts the winding outer peripheral surface of the capstan; and the support member attached to the support member and the traction member A connecting pin to which the other end is attached, and when the contact surface of the support member comes into contact with the winding outer peripheral surface, the first axis of the pivot pin is more than the second axis of the connecting pin. To be radially outward of the capstan (B) It is those that form.

Further, the contact surface is formed in an arc shape along the winding outer peripheral surface of the capstan when viewed from the axial center direction of the capstan.
Further, the contact surface is formed symmetrically with respect to a plane including the first axis and the second axis.
Moreover, the said tooth | gear part is formed in V shape.

  According to the tension assist jig for wire drawing of the present invention, the tip of the wire can be easily gripped without using a tool. Moreover, it can be easily gripped so as not to interfere with the traction member. In other words, the tip can be gripped as if swallowed deeply.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 is a simplified explanatory view for explaining a use state of a drawing auxiliary jig for wire drawing of the present invention. FIG. 2 is a side view of the first embodiment of the present invention. FIG. 3 is a plan view, and FIG. 4 is an explanatory diagram for explaining the state of use.

  Reference numeral 20 shown in FIG. 1 denotes a drawing tension auxiliary jig according to the present invention, and a metal wire A such as a trolley wire wound around a bowl-shaped drum F and drawn by a drawing die D. During the lead-out process (a set-up operation for wire drawing) wound around the capstan B that is pulled out from the die D, one end Ca of the wire A is attached to and detached from the capstan B via a hook member G. It connects the other end Cb of the pulling member C such as a chain, a wire, or a sling that is freely attached.

  The first embodiment of the present invention includes a gripping member 1 that grips a tip end portion Aa that has a leading portion Ab that is partly processed thinly so as to be inserted through a die D. The gripping member 1 has a U-shaped block body 6 in a plan view in which a through hole 1a into which the tip end portion Aa of the wire A can be inserted is formed. In addition, an eccentric cam 2 with a spur gear-like tooth portion 2a pivotably mounted via a fulcrum pin 7 in the vicinity of the through hole 1a of the block body 6 is provided. Further, it has a round rod-shaped operation lever 4 for swinging the eccentric cam 2. The operation lever 4 has a short protrusion protruding in the axial direction at the tip. Further, the eccentric cam 2 has an insertion hole 2b in which a short projection of the operation lever 4 can be inserted and removed. That is, the operation lever 4 is detachable from the gripping member 1 (the eccentric cam 2 thereof).

The eccentric cam 2 forms a tooth portion 2a on a curved surface having an arc shape in plan view. There is an insertion hole 2c through which the fulcrum pin 7 is inserted at a position eccentric from the center point of the radius of curvature of the curved surface where the tooth portion 2a is formed. Also, so as to be swingable arranged so as to enter into the through hole 1a of the tip portion Aa distant teeth 2a from L ₇ (the axis of the fulcrum pin 7) eccentric cam 2 cam pivot axis is inserted . That is, the eccentric cam 2 is disposed so that the tooth portion 2a bites into the tip end portion Aa when it swings in the direction of being drawn into the through hole 1a. Further, the eccentric cam 2 is disposed so as to press the tip end portion Aa in the axial direction (left-right direction) of the capstan B.

  Further, a pair of plate-like support members 3 and 3 pivotably attached to the gripping member 1 via a pivot pin 10, and a pair of support members 3 and 3 swing via a connecting pin 11. And a pair of plate-like connecting members 5 and 5 that are pivotally mounted.

The support member 3 has a contact surface 3a formed in an arc shape along the winding outer peripheral surface Ba of the capstan B as viewed from the axial direction (left-right direction) of the capstan B (side view). Contact surface 3a with respect the plane S including the second axis L ₁₁ of the first axis L ₁₀ and the connecting pin 11 of the pivot pin 10, it is formed dihedral symmetry. That is, the support member 3 has a pair of contact surfaces 3a and 3a that are symmetrical in side view. Further, the pair of support members 3 and 3 are pivotally attached by pivot pins 10 and 10 so as to sandwich the gripping member 1 and project from the gripping member 1 (through hole 1a of the block body 6). Forms a space through which can be inserted.

The pair of plate-like connecting members 5 and 5 are pivotally attached to the pair of support members 3 and 3 by connecting pins 11. Moreover, the attachment pin 12 which connects a pair of connection members 5 and 5 to the left-right direction is attached. The other end Cb of the pulling member C is attached to the attachment pin 12 so as to freely swing around the third axis L ₁₂ of the attachment pin 12. In other words, the connecting member 5 is attached to the pulling member C so as to be swingable. Moreover, the space | interval which can insert the front-end | tip part Aa which protrudes from the holding member 1 (the through-hole 1a of the block body 1) of the left-right space | interval of a pair of connection members 5 and 5 is formed. Further, the connecting member 5 is provided so as not to contact the winding outer peripheral surface Ba when the contact surface 3a of the support member 3 is in contact with the winding outer peripheral surface Ba of the capstan B.

Further, as shown in FIG. 4, when the contact surface 3 a of the support member 3 comes into contact with the winding outer peripheral surface Ba, the first axis L ₁₀ of the pivot pin ₁₀ becomes the second axis L ₁₁ of the connection pin _11. Rather, the pivot pin 10 is provided so as to be radially outward of the capstan B. Further, there is provided a pivot pin 10 so that the radial outward of the third center axis L ₁₂ of the attachment pin 12. That is, the tip Aa protruding from the gripping member 1 is provided so as to form a gap H so as not to contact the other end Cb of the pulling member C. Further, a narrowed lead portion Ab is formed in a part of the tip portion Aa (in order to pass the die D). A gripping member 1 is disposed so as to be able to grip a portion that is not the lead portion Ab. Yes.

Next, a second embodiment will be described. FIG. 6 is a cross-sectional plan view of an essential part of the second embodiment, and FIG. 7 is an explanatory diagram for explaining a use state thereof. FIG. 8 is a side view of an example of the implementation of the eccentric cam 2 of the pulling auxiliary jig for wire drawing according to the second embodiment, and FIG. 9 is a front view thereof.
The gripping member 1 that grips the leading end portion Aa of the drawn wire A has an L-shape in plan view in which a groove portion 1c that is open to the side (axial direction of the capstan B) through which the leading end portion Aa can be inserted is formed. A block body 6 is provided.
There is an eccentric cam 2 with a tooth portion 2a pivotally mounted via a fulcrum pin 7 in the vicinity of the groove portion 1c and radially outward of the capstan B rather than the tip portion Aa inserted through the groove portion 1c. ing. Further, the round lever-like operation lever 4 for swinging the eccentric cam 2 is detachably provided as in the first embodiment. Further, the side opening-shaped groove portion 1c is formed to face the flange surface Bb of the capstan B in use.

The eccentric cam 2 forms a V-shaped tooth portion 2a that restricts the tip portion Aa from escaping in the left-right direction. It has an insertion hole 2c through which the fulcrum pin 7 is inserted at a position deviated from the center point of the radius of curvature of the curved surface having a circular arc when viewed from the side where the tooth portion 2a is formed. Also, so as to be swingable arranged so as to enter the groove 1c of the tip portion Aa distant teeth 2a from L ₇ (the axis of the fulcrum pin 7) eccentric cam 2 cam pivot axis is inserted. That is, the eccentric cam 2 is disposed so that the tooth portion 2a bites into the tip end portion Aa when swinging in the direction of being pulled into the groove portion 1c.

  Further, a pair of plate-like support members 3 and 3 pivotably attached to the gripping member 1 via a pivot pin 10, and a pair of support members 3 and 3 swing via a connecting pin 11. And a pair of plate-like connecting members 5 and 5 that are pivotally mounted.

  The support member 3 has a contact surface 3a formed in an arc shape along the winding outer peripheral surface Ba of the capstan B in a side view, and the pair of support members 3 and 3 are connected to the connecting pin 11 so as to sandwich the gripping member 1 therebetween. Is pivotally attached to the gripping member 1 at a position farther in the axial direction of the capstan B than the tip end portion Aa protruding from the gripping member 1 (the groove portion 1c of the block body 6).

The pair of plate-like connecting members 5 and 5 are pivotally attached to the pair of support members 3 and 3 by connecting pins 11, respectively, and are attached to the connecting members 5 and 5 as in the first embodiment. and has a third axis L ₁₂ and the other end Cb puller member C about the attachment pin 12 and mounted freely head-shaking.

Further, as shown in FIG. 7, when the contact surface 3a of the support member 3 comes into contact with the winding outer peripheral surface Ba, the tip portion Aa protruding from the gripping member 1 is the same as in the first embodiment. The first shaft center L ₁₀ of the pivot pin 10 is more radial than the second shaft center L ₁₁ of the connecting pin 11 so as to form a gap H so as not to contact the other end Cb of the traction member C. The outer side is provided so as to be radially outward from the third axis L ₁₂ of the mounting pin 12. That is, the gripping member 1 is disposed so as to be able to grip a portion that is not the lead portion Ab of the tip end portion Aa.

Next, FIG. 10 is an explanatory diagram for explaining a use state of the third embodiment.
In the third embodiment, as in the first embodiment, a gripping member 1 having a detachable operation lever 4, an eccentric cam 2 with a tooth portion 2a, and a fulcrum pin 7 is formed in an arc shape in a side view. Further, the support member 3 having the contact surface 3 a formed symmetrically with respect to the plane S is pivotally attached via a pivot pin 10. Further, a connecting pin 11 to which the other end Cb of the pulling member C is attached is attached to the pair of support members 3 and 3.

When the contact surface 3 a of the support member 3 contacts the winding outer peripheral surface Ba, the first axis L ₁₀ of the pivot pin 10 is more radially out of the capstan B than the second axis L ₁₁ of the connection pin 11. The pivot pin 10 is provided so that it may become. That is, the front end Aa protruding from the gripping member 1 forms a gap H so that the other end Cb of the pulling member C does not come into contact. In other words, the gripping member 1 is disposed so as to be able to grip a portion that is not the lead portion Ab of the tip end portion Aa.

The present invention can be modified in design. For example, the pair of plate-like support members 3 and 3 may be integrally formed in a block shape. Further, the support member 3 does not have to have the shape (ginkgo leaf shape or fan shape) as in the embodiment as long as it has the contact surface 3a.
Further, the pair of plate-like connecting members 5 and 5 may be integrally formed in a block shape.
In addition, a cylindrical collar member may be externally mounted on the mounting pin 12 of the first and second embodiments, and the pulling member C may be swingably attached to the collar member. Moreover, the attachment pin 12 may be provided detachably and the traction member C may be detachable.
Further, a cylindrical collar member may be externally mounted on the connecting pin 11 of the third embodiment, and the pulling member C may be attached to the collar member so as to be swingable. Further, the connecting pin 11 may be provided detachably and the traction member C may be detachable.

A method (action) of using the above-described drawing auxiliary jig for drawing according to the present invention will be described.
As shown in FIG. 1, the first step of winding the wire A to be drawn from the first drum F ₁ around which the wire A is wound around the first capstan B ₁ through the first die D ₁ for wire drawing a plurality of times. during, the wire tip portion Aa other than tap portions Ab with thin processed to withdraw from the die D ₁ of the a, towing member C is the first embodiment of the tensile for wire drawing auxiliary jig 20A that is attached To grab.

  That is, as shown in FIG.2 and FIG.3, the front-end | tip part Aa is penetrated to the through-hole 1a. At this time, the gripping member 1 swings (oscillates), and the lead-out portion Ab is smoothly inserted without being obstructed by members such as the support member 3 and the connecting member 5. That is, the tip end portion Aa is inserted deeply. Then, the operation lever 4 is attached to the eccentric cam 2, the eccentric cam 2 is swung so that the tooth portion 2 a bites into the tip end portion Aa other than the lead portion Ab, and the wire rod A is gripped. That is, since the lead portion Ab having a thin outer diameter is not gripped, the possibility of breakage or disconnection is reduced (improves safety). After gripping, the operation lever 4 is removed.

Next, the first capstan B ₁ is driven to rotate in the direction in which the first capstan B ₁ is pulled out from the first die D ₁ (N direction in FIGS. 4 and 5). Then, the first capstan B ₁ represents, while pulling member C is wound, attracted a first embodiment of the tensile for wire drawing auxiliary jig 20A, draw the wire A from the first die D _1. At this time, the wire A tries to come off due to a force acting in the direction (T direction shown in the figure) in which the wire A comes out of the gripping member 1, but the tip Aa comes out while the teeth 2 a of the eccentric cam 2 are bitten. When moving in the direction T, the eccentric cam 2 further swings in the direction in which the tooth portion 2a bites into the distal end portion Aa. That is, the eccentric cam 2 uses the force in the pulling direction T to bite the tooth portion 2a into the tip end portion Aa and grip it more strongly.

Then, when the first capstan B ₁ is rotated, the contact surface 3a close to the winding outer peripheral surface Ba of the support member 3 comes into contact with the winding outer peripheral surface Ba of the capstan B as shown in FIG. . When contacted, a gap H is formed between the tip end portion Aa and the other end Cb of the pulling member C. The wire A approaches the first capstan B ₁ while maintaining the axis La of the wire A in a straight line without interfering with the pulling member C.

Further, when the first capstan B ₁ rotates, as shown in FIG. 5, the gripping member 1 swings so as to tilt toward the winding outer peripheral surface Ba, and the wire A is wound around the first capstan B ₁ . . At this time, the contact surface 3a of the support member 3 is brought into surface contact with the winding outer peripheral surface Ba to increase the frictional force, thereby reducing the sliding of the support member 3 so as to swing in the axial direction of the capstan B. Moreover, it contacts so that winding outer peripheral surface Ba may be followed, without damaging.

After the wire A is wound around the first capstan B ₁ by a predetermined number of turns, the operation lever 4 is attached to the gripping member 1 and the wire A is removed from the gripping member 1. The wire A is wound around a second drum installed facing the first drum F ₁ and the first capstan B ₁ and is successively drawn by the first die D ₁ .
When the drawing of the wire A of the first drum F ₁ is completed, a second die D ₂ is installed between the second drum F ₂ and the first capstan B _1. The second die D ₂ is drawn thinner than the first die. The wire A is drawn from the two drums F ₂ to the first capstan B ₁ through the second die D ₂ .
During the second step, the first capstan B ₁ rotates in the reverse direction to the first step.

The pulling auxiliary jig 20A for wire drawing of the first embodiment is in contact with a contact surface 3a that is symmetrical with respect to the plane S with the contact surface 3a that has been in contact with the winding outer peripheral surface Ba in the first step. (That is, there is no need to change or remove the orientation of the wire drawing tension auxiliary jig 20A of the first embodiment, and the setup time is reduced.) That is, since the mounting direction of the operation lever 4 does not change, the operator The operation lever 4 can be inserted from the same standing position as in the first step. Then, a similar effect to the same position as the first step, winding the wire A to a first capstan B _1.

The first drum F ₁ on which the wire A fed from the second drum F _{2 is} drawn and wound by the second die D ₂ is moved to the vicinity of the finishing die D ₃ . When the wire A is wound from the moved first drum F ₁ ′ through the finishing die D ₃ and in the vicinity of the flange surface Bb of the second capstan B ₂ , the drawing auxiliary tension jig 20B of the second embodiment is used. use.

Auxiliary jig 20B tensile for wire drawing of the second embodiment, the side opening groove portions 1c are arranged in facing form on the second flange surface Bb of the capstan B _2. The tip end portion Aa of the wire A is inserted through the groove portion 1c of the gripping member 1. The lead-out portion Ab of the distal end portion Aa is smoothly inserted without being obstructed by members such as the support member 3 and the connecting member 5 and the other end Cb of the pulling member C. Teeth 2a of the V-shaped by the operation of the operating lever 4 gripping the leading end portion Aa other than tap portions Ab from the second radial outward of the capstan B _2. That is, since the lead portion Ab having a thin outer diameter is not gripped, the possibility of breakage or disconnection is reduced (improves safety). The movement of the second capstan B _{2 in} the axial direction is restricted by entering the V-shaped tooth portion 2a. Therefore, the wire A is safely wound around the winding outer peripheral surface Ba (predetermined position) in the vicinity of the flange surface Bb.

Then, by the same action as that of the first step of the drawing auxiliary tensile jig 20A of the first embodiment, it does not interfere with the members such as the pulling member C and the connecting member 5 and is arcuate in side view. The contact surface 3a contacts so that the winding outer peripheral surface Ba is not damaged. The contact surface 3a is to improve the frictional force becomes the winding peripheral surface Bb and surface contact, winding the wire A stably to a second capstan B _2.

  Further, when the wire drawing tension assisting jig 20C of the third embodiment is used in the first and second steps similar to those of the first embodiment, the gripping member 1 is applied to the holding member 1 by the same action as described above. The tip portion Aa other than the lead portion Ab is gripped. Since the other end Cb of the pulling member C is attached to the connecting pin 11, the wire A can be safely pulled out by efficiently applying the force of approaching and pulling out the portion to be gripped. Further, even if the rotation direction N of the capstan B changes, the contact surface 3a formed symmetrically with respect to the plane S makes contact with the winding outer peripheral surface Ba without being damaged. Further, the contact surface 3a comes into surface contact with the winding outer peripheral surface Ba to improve the frictional force, and the wire A is stably wound around the capstan B.

As described above, according to the present invention, the wire A and the capstan B are applied to the capstan B which is drawn by the wire drawing die D to the capstan B which is pulled out from the die D a plurality of times. A pulling auxiliary jig for wire drawing that connects the other end Cb of the pulling member C to which the end Ca is attached, and is drawn out with an eccentric cam 2 with a toothed portion 2 a that is swung by the operation lever 4. A gripping member 1 that grips the distal end portion Aa of the wire A, and a contact surface that is pivotally attached to the gripping member 1 via a pivoting pin 10 and that contacts the winding outer peripheral surface Ba of the capstan B A support member 3 having 3a, and a connection member 5 to which a mounting pin 12 to which the other end Cb of the traction member C is attached and pivotally attached to the support member 3 via a connection pin 11 is attached. Provided when the contact surface 3a of the support member 3 contacts the winding outer peripheral surface Ba. Than the second axis L ₁₁ of the first axis L ₁₀ is the connecting pin 11 of the emission 10, and a radial outward of the capstan B, and radial outward of the third center axis L ₁₂ of the attachment pin 12 Therefore, the tip Aa of the wire A can be gripped so as to be swallowed deeply into the gripping member 1 without interfering with the pulling member C (the other end Cb). That is, the wire A can be safely gripped without gripping the lead portion Ab whose outer diameter is thin and easy to break (disconnect). Further, the work efficiency can be improved (productivity can be improved) by reducing reworking (redoing of setup) due to breakage (disconnection). In addition, the lead portion Ab can be easily grasped without the need for a tool or the like. Moreover, the wire A can be removed easily. Further, the gripping member 1 can be swung so that the wire A can be easily wound along the winding outer peripheral surface Ba of the capstan B.

In addition, one end Ca is attached to the wire A and the capstan B during the lead-out step of winding the wire A drawn by the wire drawing die D onto the capstan B that is pulled out from the die D a plurality of times. A pulling auxiliary jig for wire drawing that connects the other end Cb of the pulling member C, has an eccentric cam 2 with a tooth portion 2a that is swung by the operation lever 4, and has a distal end portion Aa of the wire A that is pulled out. And a support member 3 having a contact surface 3a which is pivotally attached to the gripping member 1 via a pivot pin 10 and which contacts the winding outer peripheral surface Ba of the capstan B. And a connecting pin 11 attached to the support member 3 and attached to the other end Cb of the traction member C, and when the contact surface 3a of the support member 3 comes into contact with the winding outer peripheral surface Ba, than the second axis L ₁₁ of the first axis L ₁₀ is the connecting pin 11 of the pivot pin 10, cap Since it is configured such that the radial outward of the Tan B, can grip in such that the tip portion Aa of the wire A swallow deeply into gripping member 1 without interfering with the pulling member C (the other end Cb of). That is, the wire A can be safely gripped without gripping the lead portion Ab whose outer diameter is thin and easy to break (disconnect). Further, the work efficiency can be improved (productivity can be improved) by reducing reworking (redoing of setup) due to breakage (disconnection). In addition, the lead portion Ab can be easily grasped without the need for a tool or the like. It can also be easily removed. Further, the gripping member 1 can be swung so that the wire A can be easily wound along the winding outer peripheral surface Ba of the capstan B. Further, the pulling force can be applied to the wire A by bringing the other end Cb of the pulling member C close to the place where the wire A is gripped. Moreover, the whole can be reduced in size and weight.

  Further, since the contact surface 3a is formed in an arc shape along the winding outer peripheral surface Ba of the capstan B as viewed from the axial direction of the capstan B, the contact friction surface with the capstan B can be widened, and the support member 3 Sliding is reduced, and the work can be done more safely. Further, the work can be performed without damaging the capstan B. That is, it is possible to improve the quality of the wire A without causing any damage to the wire A due to the scratch on the capstan B.

Further, the contact surface 3a, with respect to the plane S including the first axis L ₁₀ and a second axis L _11, since the formed dihedral symmetry, to draw the wire A regardless of the rotational direction N of the capstan B Can do. Moreover, the effort which attaches and detaches the drawing auxiliary | assistant jig | tool for wire drawing of this invention according to the rotation direction N can be reduced. Even if the rotation direction N changes, the wire A can be wound around a predetermined position of the capstan B. That is, two dies D can be installed so as to sandwich one capstan B, and work efficiency is improved. Moreover, the wire drawing equipment can be simplified.

  Moreover, since the tooth | gear part 2a was formed in V shape, the front-end | tip part Aa of the wire A can be held more stably. Further, it is possible to work more safely by restricting the swing of the wire A, and the wire A can be wound more accurately around a predetermined position.

It is a simplified explanatory drawing explaining the use condition of the tension | pulling auxiliary jig for wire drawing of this invention. It is a side view of the 1st Embodiment of this invention. It is a top view of a 1st embodiment of the present invention. It is use condition explanatory drawing of the 1st Embodiment of this invention. It is use condition explanatory drawing of the 1st Embodiment of this invention. It is principal part sectional top view of the 2nd Embodiment of this invention. It is use condition explanatory drawing of the 2nd Embodiment of this invention. It is a side view which shows an example of implementation of the eccentric cam of 2nd Embodiment. It is a front view which shows an example of implementation of the eccentric cam of 2nd Embodiment. It is use condition explanatory drawing of the 3rd Embodiment of this invention.

Explanation of symbols

1 Gripping member 2 Eccentric cam 2a Tooth part
3 Support members
3a Contact surface 4 Control lever
10 pivot pin
11 Connecting pin
12 Mounting pin A Wire Aa Tip B Capstan Ba Winding outer peripheral surface C Pulling member Ca One end Cb The other end D Die
L ₁₀ first axis L ₁₁ second axis L ₁₂ third axis S plane

Claims (5)

In the lead-out step of winding the wire rod (A) drawn by the wire drawing die (D) around the capstan (B) pulled out from the die (D) a plurality of times, the wire (A) and the cap A pulling auxiliary jig for wire drawing connecting the other end (Cb) of the pulling member (C) to which one end (Ca) is attached to the stun (B),
A gripping member (1) having an eccentric cam (2) with a tooth portion (2a) that is swung by an operation lever (4) and gripping the tip (Aa) of the drawn wire (A), and the grip A support member (3a) having a contact surface (3a) which is pivotally attached to the holding member (1) via a pivot pin (10) and which contacts the winding outer peripheral surface (Ba) of the capstan (B). And an attachment pin (12) to which the other end (Cb) of the pulling member (C) is attached to the support member (3) through a connecting pin (11) so as to be swingable. A connecting member (5) to be attached;
When the contact surface (3a) of the support member (3) contacts the winding outer peripheral surface (Ba), the first axis (L10) of the pivot pin ( ₁₀ ) is connected to the connecting pin (11). The capstan (B) is radially outward from the second axial center (L ₁₁ ), and is radially outward from the third axial center (L ₁₂ ) of the mounting pin (12). A tension auxiliary jig for wire drawing, characterized in that it is configured as follows. In the lead-out step of winding the wire rod (A) drawn by the wire drawing die (D) around the capstan (B) pulled out from the die (D) a plurality of times, the wire (A) and the cap A pulling auxiliary jig for wire drawing connecting the other end (Cb) of the pulling member (C) to which one end (Ca) is attached to the stun (B),
A gripping member (1) having an eccentric cam (2) with a tooth portion (2a) that is swung by an operation lever (4) and gripping the tip (Aa) of the drawn wire (A), and the grip A support member (3a) having a contact surface (3a) which is pivotally attached to the holding member (1) via a pivot pin (10) and which contacts the winding outer peripheral surface (Ba) of the capstan (B). ) And a connecting pin (11) to which the other end (Cb) of the pulling member (C) is attached to the support member (3), and the support member (3) When the contact surface (3a) contacts the winding outer peripheral surface (Ba), the first axis (L ₁₀ ) of the pivot pin ( ₁₀ ) is connected to the second axis (L of the connection pin (11)). ₁₁ ), a tension auxiliary jig for wire drawing, characterized in that the capstan (B) is radially outward of the capstan (B).   The stretch according to claim 1 or 2, wherein the contact surface (3a) is formed in an arc shape along the winding outer peripheral surface (Ba) of the capstan (B) when viewed from the axial direction of the capstan (B). Wire tension auxiliary jig. The contact surface (3a), the terms first axis (L ₁₀₎ and said second axis (L ₁₁₎ a plane including the (S), according to claim 1, wherein forming the dihedral symmetry Tensile auxiliary jig for wire drawing.   5. The tension assist jig for wire drawing according to claim 1, 2, 3 or 4, wherein the tooth portion (2a) is formed in a V shape.

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