JPH0656713U - Wire rod measuring instrument - Google Patents

Abstract

(57) [Abstract] [Purpose] To eliminate the influence of centrifugal force on the wheel due to the rotation of the support. [Structure] The second wheel 31 is positioned so that the wire W passes through the center of the wire passage hole 40 of the support 32. The first regulating member 38 and the second regulating member 39 are adjusted so as to come into contact with the support 32. The second wheel 31 is fixed in this position. The centrifugal force acting on the first wheel 30 causes the third lever 54 to rotate the first lever 33 in a direction opposite to the rotational direction by the centrifugal force using the balance weight 55,
Cancel centrifugal force. The first wheel 30 presses the wire W by a spring 37.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary wire rod measuring instrument for use in a wire rod processing machine such as a twisting machine or a wire drawing machine, and for measuring the wire rod passing speed and the wire length of a wire rod that advances while rotating.

[0002]

[Prior art]

 In a wire rod processing machine such as a twisting machine, the operation of the wire rod processing machine is controlled according to the feeding speed of the wire rod. In order to detect the feed rate of the wire rod, a wire rod scale as shown in Figs. 7 and 8 is used.

This wire rod measuring instrument includes a pair of upper and lower wheels 1 and 2 for sandwiching a wire rod, and upper and lower supports 5 and 6 for supporting rotating shafts 3 and 4 of the wheels 1 and 2, respectively. A detector 7 for detecting the rotation of the rotary shaft 3 of the upper wheel 1 and a frame 8 for holding the upper and lower supports 5 and 6 in a vertically movable state are provided.

The upper and lower supports 5 and 6 are screwed into a threaded guide rod 9 of a frame 8 and are slidably fitted into a guide rod 10 so that respective height adjusting knobs 11 are turned. As a result, the supports 5 and 6 move up and down, and the wheels 1 and 2 are moved toward and away from each other.

The rotation shafts 3 and 4 of the wheels 1 and 2 are urged by springs 12 in a direction in which they approach each other, that is, the upper support 5 is downward and the lower support 6 is upward.

The detector 7 is a rotation pulse generator connected to the rotating shaft 3 via a bevel gear 13, and is attached to the upper support 5.

In such a wire rod scale, the wheel rods 1 and 2 are rotated by sandwiching the wire rod between the upper and lower wheels 1 and 2 and pulling the wire rod while rotating the wire rod. A pulse signal is generated from the detector 7 according to the rotation speed of the wheel 1, and the passing speed or the wire length of the wire can be measured based on the pulse signal. The frame 8 also rotates according to the wire rod, and the wheels 1 and 2 rotate around the wire rod.

[0008]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, the wheels 1 and 2 are urged by the spring 12 in the direction in which the wire rod is sandwiched. Therefore, when the frame 8 rotates, the centrifugal force exerts an outward force on the wheels 1 and 2. The force to pinch the wire is weakened.

Therefore, the frictional force between the wheels 1 and 2 and the wire material is reduced, and the rotational force of the wheels 1 and 2 is reduced. As a result, the number of rotations corresponding to the passed wire cannot be obtained, and it becomes impossible to measure the passing speed or wire length of the wire accurately.

In view of the above, it is an object of the present invention to provide a wire rod measuring instrument that can eliminate the influence of centrifugal force acting on a wheel.

[0011]

[Means for Solving the Problems]

 1 to 5, a pair of wheels 30 and 31 for sandwiching a wire rod W are attached to a support member 32, and the support member 32 is rotated around the wire rod W as shown in FIGS. In the wire rod measuring instrument for measuring the passage speed or the wire length of the wire rod by detecting the rotation of the wire rod when the wire rod W passes between the wheels 30 and 31, the first wheel 30 is the first lever. 33 is rotatably supported, the first lever 33 is rotatably supported by the support body 32 around the support shaft 34, the second wheel 31 is rotatably supported by the second lever 35, and the second lever 35 is An urging body 37 rotatably supported by the support body 32 about the central axis 36 and urging the first lever 33 in a direction to bring the first wheel 30 closer to the second wheel 31; Strike the centrifugal force on the wheel 30 To this end, a third lever 54 that applies a rotational force to the first lever 33 in a direction opposite to the rotational direction by centrifugal force is provided, and the second lever 35 has a passage wire diameter with the central shaft 36 sandwiched therebetween. Accordingly, a first regulating member 38 and a second regulating member 39 for adjusting the position of the second lever 35 are provided.

[0012]

[Action]

 In the above problem solving means, the wire rod W is sandwiched between the first and second wheels 30 and 31, and the first restricting member 38 prevents the second wheel 31 from swinging downward depending on the diameter of the wire rod W. The second restricting member 39 restricts the upward movement of the second wheel 31 to adjust the position of the second wheel 31.

In this state, the second wheel 31 is fixed at the adjusted position, and only the first wheel 30 can move in the vertical direction. It is pressed with various forces.

When the wire rod W is pulled while being rotated, the first and second wheels 30 and 31 are rotated, and the rotation of the wheel 31 is detected by the proximity switch, whereby the feeding speed of the wire rod W or the wire rod W is detected. The length is measured.

At this time, the rotation of the support 32 causes a centrifugal force to act on the first and second wheels 30 and 31, so that the wheels 30 and 31 move outward and try to separate from each other. However, in the second wheel 31, the second lever 35 cannot swing due to the first restricting member 38. Therefore, the second wheel 31 does not move up and down.

In the first wheel 30, the third lever 54 receives the centrifugal force in the same direction as the first lever 33, but the turning force of the third lever 54 is changed by the gears 51 and 53. The direction opposite to the moving direction is applied to the first lever 33 and cancels the centrifugal force acting on the first lever 33. Therefore, the first wheel 30 does not move up and down.

Therefore, even when the wire rod is being measured, the upper and lower wheels can always stably press the wire rod by the urging force of the urging body 37.

[0018]

【Example】

 1 is a front view of a wire rod scale showing an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view of a wheel supporting portion, FIG. 4 is a sectional view of a support, and FIG. FIG. 6 is a block diagram of a rotary take-up device using the wire rod scale of the present invention.

As shown in FIG. 6, the rotary take-up device of the present embodiment includes a take-up device 20 for taking up the twisted wire W while rotating it, an unillustrated upstream twisting device and a downstream rotary take-up device. I have it.

Then, in order to rotate the take-up device 20 at a predetermined twist pitch, one drive motor 21 that works in conjunction with the rotary winding device is provided, and this drive motor 21 is controlled according to the supply speed of the wire W. In addition, the wire rod measuring instrument 22 is arranged on the upstream side of the take-up device 20 in the wire rod supply direction. In FIG. 6, 23 is a drive shaft, and 24 is a twisting pitch setting transmission.

As shown in FIG. 1, the wire rod measuring instrument 22 has a pair of upper and lower wheels 30, 31 rotatably mounted on a support 32, and a wheel when the wire rod W passes between the wheels 30, 31. The speed and length of the wire rod are measured by detecting the rotation of the wire.

The upper first wheel 30 is rotatably supported by a first lever 33, the first lever 33 is rotatably supported by a support 32 around a support shaft 34, and the lower second wheel 31 is The second lever 35 is rotatably supported by the second lever 35, and the second lever 35 is swingably supported by the support 32 about a center shaft 36.

The first lever 33 is provided with a biasing body 37 that biases the first wheel 30 in the direction of approaching the second wheel 31. The second lever 35 has a first restricting member 38 that restricts the movement of the second lever 35 in the wheel separating direction on the side opposite to the second wheel 31 with the central shaft 36 interposed therebetween. A second restricting member 39 that restricts the movement of the second wheel 31 in the wheel approaching direction is provided on the opposite side of the shaft 36.

As shown in FIG. 4, the support 32 has a cylindrical shape with a wire rod passage hole 40 formed in the center thereof, and is mounted on a main shaft 41 a of a holding base 41 standing upright in the vicinity of the drawing device 20. ing. The main shaft 41a is rotated in association with the rotation of the take-up device 20, so that the support 32 is also rotated around the wire W.

An upper support portion 42 for supporting the first lever 33 is projectingly provided on an upper portion of the support body 32, and a pair of front and rear lower support portions 43 for supporting the second lever 35 is provided on a lower portion thereof. It is projected. A slip ring 44 is attached to the outer circumference of the support 32. Then, the upper support portion 42 is formed with two through holes 45 and 46.

The first and second wheels 30 and 31 are made of hard aluminum, and five measuring holes 47 are formed on the side surface of the first and second wheels 30 and 31 at equal intervals along the circumferential direction.

The first lever 33 is arranged on one side of the support 32, and a support shaft 34 is engaged with a key at one end thereof. The support shaft 34 is rotatably supported by passing through one through hole 45 of the upper support portion 42 of the support 32.

A wheel shaft 48 is fixed to the other end side of the first lever 33, and the first wheel 30 is rotatably supported by the wheel shaft 48 via a bearing 49.

A gear 51 is fixed to an end of the support shaft 34. The gear 51 is fixed to a balance shaft 52 that is rotatably inserted in the other through hole 46 of the upper support 42. It is meshed with 53.

On the other side of the support 32, one end of a balance lever third lever 54 is fixed to the balance shaft 52, and the balance weight 55 is integrally formed at the other end of the third lever 54. ing. As a result, with respect to the vertical movement of the first wheel 30 due to the centrifugal force applied to the first wheel 30, the turning force of the balance weight 55 acts in the direction opposite to the centrifugal force of the first wheel 30 to cancel the centrifugal force. As a result, the equilibrium state of the first wheel 30 is maintained.

The second lever 35 is composed of a mounting portion 60 arranged below the support 32, and a pair of front and rear wheel holding portions 61 a and 61 b protruding from the mounting portion 60. A central shaft 36 is fixed through the mounting portion 60, the mounting portion 60 is fitted between the lower support portions 43 of the support 32, and the central shaft 36 is rotatably supported by the lower support portion 43. There is.

A wheel shaft 62 is fixed to the front and rear wheel holding portions 61 a and 61 b, and a second wheel 31 is rotatably supported by the wheel shaft 62 via a bearing 63.

A protrusion 64 is formed at the tip of the front wheel holding portion 61 a, and a proximity switch 65 for detecting rotation of the wheel 31 is provided on the measurement hole 47 of the second wheel 31 on the protrusion 64. It is installed facing each other. With these, the rotation speed and the forward / reverse rotation of the wheel 31 are detected.

In FIG. 1, 66 is a guide for guiding the wire W into the passage hole 40.

Further, as shown in FIG. 5, an adjusting screw 72 is fitted in a hole 71 of the upper pin 70 fixed to the first lever 33, and a hook bolt 73 penetrates the adjusting screw 72. The hook bolt 73 has a screw threaded on the upper side, the screw is screwed into the adjusting screw 72, and the nut 74 is inserted into the upper end. The lower end of the hook bolt 73 is welded to the lower pin 75 fixed to the wheel holding portion 61b on the rear side of the second lever 35.

An adjusting nut 76 is screwed onto the upper end of the adjusting screw 72, and a spring 37 as an urging body is externally fitted between the upper pin 70 of the adjusting screw 72 and the adjusting nut 76. The first lever 33 is pressed downward via the pin 70.

The first restricting member 38 and the second restricting member 39 are composed of bolts 38 a, 39 a and nuts 38 b, 39 b, respectively. , 39a are fitted from the lower side, and nuts 38b, 39b are fitted on the bolts 38a, 39a so as to be in contact with the lower side of the support 32. The upper ends of the bolts 38a and 39a can come into contact with the support 32.

In the above structure, the twisted wire W is passed between the first and second wheels 30 and 31 and guided through the wire-passage hole 40 at the center of the support 32 into the take-up device 20.

At this time, the position of the second wheel 31 is adjusted according to the diameter of the wire so that the wire W passes through the center of the hole 40 of the support 32. Then, the bolt 38a of the first restricting member 38 is rotated so as to come into contact with the support 32, so that the second wheel 31 is prevented from swinging downward. In addition, the bolt 39a of the second restricting member 39 is rotated and brought into contact with the supporting body 32 to restrict the vertical movement of the second wheel 31.

In this state, the second wheel 31 is fixed at the adjusted position, and only the first wheel 30 is movable in the vertical direction, but the adjustment nut 76 fitted to the adjustment screw 72 is used. The pressing force of the spring 37 is changed by rotating, and the wire rod W is pressed against the wheels 30 and 31 with an appropriate force.

Then, the wire W is taken by the take-up device 20. When the wire rod W is pulled while rotating, the first and second wheels 30 and 31 rotate, and the proximity switch 65 detects the rotation of the second wheel 31. The length is measured.

Here, when the support 32 is rotated by the rotation of the take-up device 20, a centrifugal force exerts a radial load on the wheels 30 and 31 in a direction in which they are separated from each other. As a result, in the second wheel 31, the second lever 35 tries to swing counterclockwise, but since the bolt 38a of the first regulating member 38 is in contact with the support 32, the second lever 35 swings. I can't move. Therefore, the second wheel 31 does not move up and down.

Further, in the first wheel 30, the first lever 33 tries to rotate clockwise, but with this, a clockwise driving force is applied to the gear 51 of the support shaft 34. On the other hand, the balance weight 55 also receives a centrifugal force, and the gear 53 of the balance shaft 52 receives a clockwise driving force. As a result, both forces cancel each other out and the first wheel 30 does not move up and down.

Therefore, the upper and lower wheels can always press the wire rod in a stable manner due to the pressing force of the spring even when the wire rod is measured, and accurate measurement can be performed.

The present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention.

[0046]

[Effect of device]

 As is apparent from the above description, according to the present invention, the first wheel is urged by the urging body in the direction close to the second wheel, and the third lever is used to cancel the centrifugal force to the first wheel. Rotational force is applied to the first lever in the direction opposite to the direction of rotation by the centrifugal force, and the movement of the second wheel is restricted by the first restricting member and the second restricting member. The influence of centrifugal force on the wheel can be eliminated, and the upper and lower wheels can always press the wire rod in a stable manner even when the wire rod is being measured, and accurate measurement can be performed.

[Brief description of drawings]

FIG. 1 is a front view of a wire rod measuring instrument showing an embodiment of the present invention.

FIG. 2 is a plan view of a wire rod measuring instrument.

FIG. 3 is a sectional view of a wheel supporting portion.

FIG. 4 is a sectional view of a support.

FIG. 5 is a configuration diagram of a biasing body.

FIG. 6 is a block diagram of a rotary take-up device using the wire rod scale of the present invention.

FIG. 7 is a sectional view of a conventional wire rod measuring instrument.

FIG. 8 is a front view of a conventional wire rod measuring instrument.

[Explanation of symbols]

 30 1st wheel 31 2nd wheel 32 Support body 33 1st lever 34 Support shaft 35 2nd lever 36 Central shaft 37 Spring 38 1st regulating member 39 2nd regulating member 54 3rd lever 55 Balance weight W wire rod

Claims (1)

[Scope of utility model registration request] 1. A pair of wheels sandwiching a wire rod is attached to a support, the support is rotated around the wire rod, and the rotation of the wheel is detected when the wire rod passes between the wheels to detect the rotation of the wire rod. In a wire rod measuring instrument for measuring a passing speed or a wire length, a first wheel is rotatably supported by a first lever, and a first lever is rotatably supported by a support body around a support shaft. The wheel is rotatably supported by the second lever, the second lever is supported by the support body so as to be swingable about the central axis, and is attached to the first lever in a direction to bring the first wheel close to the second wheel. A second lever is provided with a urging body for urging, and a third lever for giving a rotational force to the first lever in a direction opposite to the rotational direction by the centrifugal force to cancel the centrifugal force to the first wheel. , The passing line across the center axis A wire rod measuring instrument comprising a first regulating member and a second regulating member for adjusting a position of a second lever according to a material diameter.