JPH0985568A - Member delivering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member delivering device by which the adjustment of the delivering amount of a long member is facilitated. SOLUTION: A member delivering device 1 is for delivering a long member by the specified amount. It is provided with an oscillating supporting shaft 29 provided on the rear end of an oscillating lever 20 and to be oscillated along the longitudinal direction of the oscillating lever 20, a driving shaft mounted between the oscillating supporting shaft 29 and a turning supporting shaft of a chuck part 3, to be oscillated along the longitudinal direction of the oscillating lever 20, and to be moved in the conveying direction with the constant oscillating width, and a fulcrum cam mechanism 30 connected to the oscillating supporting shaft 29, for continuously changing the oscillating supporting shaft 29 along the longitudinal direction of the oscillating lever 20, and providing the linear relationship between the change amount of the oscillating supporting shaft 29 and the delivering changing amount of the chuck part 3. Therefore, the delivering amount of the long member 2 can be easily and reliably determined by the movement of the oscillating supporting shaft 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a member feeding device, and more particularly to a member feeding device for feeding a long wire or strip by a fixed length.

[0002]

2. Description of the Related Art Conventionally, a device as shown in FIG. 15 is known as a member feeding device 100 for feeding a wire having a predetermined length. The member feeding device 100 includes a wire rod 10
A chuck portion 102 for clamping 1 is provided,
The chuck portion 102 is swingably attached to the tip of the crank arm 103. A plurality of fulcrums 104 are provided at the end of the crank arm 103, and a drive unit 105 for swinging the crank arm 103 around the fulcrum 104 is provided at the center of the crank arm 103. Therefore, by reciprocating the central portion of the crank arm 103 by a constant width by the driving portion 105, the chuck portion 102 can be extended by a predetermined length around the fulcrum 104. Therefore, the drive unit 10
By reciprocating 5 quantitatively, the wire rod can always be fed out by a constant amount.

Here, when changing the length of the wire rod after processing, it is necessary to change the feed amount of the wire rod by the chuck portion 102, and in this case, any one of a plurality of fulcrums 104 provided on the crank arm 103 is required. It corresponds by selecting the fulcrum of.

[0004]

However, since the conventional member feeding device is constructed as described above, the following problems exist.

That is, since the wire rod feed-out amount can be changed only by the number of fulcrums provided on the crank arm 103, the application range of the member feeding device is extremely limited, and the fulcrums are evenly spaced. When set to 1, there is a problem in that it is not possible to change the feeding length of the wire rod at equal pitch intervals, and it is difficult to set the distance between the fulcrums corresponding to the feeding length of the wire rod.
Furthermore, if the structure is such that the position of the fulcrum is adjusted by continuous long holes, the feeding length of the wire can be changed continuously, but the delicate position setting of the fulcrum must be done by the operator's intuition. There was a problem that it did not happen.

The present invention has been made to solve the above-mentioned problems, and particularly an object thereof is to provide a member feeding device which facilitates adjustment of the feeding amount of a long member.

[0007]

In the member feeding device according to the present invention, the tip end of the elongated member is clamped by a chuck portion mounted on the tip end of the rocking lever via a pivot shaft, and the rocking lever is held. Is a member feeding device for feeding a long member by a predetermined amount by swinging the chuck to move the chuck portion in the transport direction. The member feeding device is provided at the rear end of the swing lever and It is mounted between the swing support shaft that slides along the longitudinal direction and the swing support shaft and the rotation support shaft of the chuck part, and slides along the longitudinal direction of the swing lever and in the transport direction. A drive shaft that moves with a fixed swing width,
It is connected to the swing support shaft to continuously change the swing support shaft along the longitudinal direction of the swing lever, and a linear relationship is provided between the swing support shaft change amount and the chuck portion feed-out change amount. It is characterized by having a fulcrum cam mechanism for holding it.

In the member feeding device according to the present invention,
After the tip of the long member is clamped by the chuck, the drive shaft is reciprocated in the transport direction with a constant swing width, and the rocking lever is rocked with the rocking support shaft as the fulcrum. The tip portion is extended by an amount corresponding to the position of the swing support shaft. Here, since the swing support shaft and the drive shaft can be slid along the longitudinal direction of the swing lever, the swing lever can be swung back and forth about the swing support shaft, and the wire rod It is possible to give the drive shaft a constant swing width in the transport direction of. When changing the amount of extension of the long member, the cam mechanism is driven to continuously change the swing support shaft by a predetermined amount along the longitudinal direction of the swing lever, thereby providing a fulcrum along the swing lever. It is possible to change the position continuously. Further, since there is a linear relationship between the change amount of the swing support shaft moved by the cam mechanism and the feed change amount of the long member fed by the chuck portion, the position of the swing support shaft is changed. At this time, the feeding amount of the long member can be determined easily and reliably.

The fulcrum cam mechanism is formed on a cylindrical fulcrum cam arranged parallel to the oscillating lever, and is formed on the peripheral surface of the fulcrum cam so as to engage with the oscillating fulcrum and oscillate. It is preferable to provide a cam groove for continuously varying the support shaft in the longitudinal direction of the swing lever, and a step motor for rotating the fulcrum cam forward and backward.

Further, it is preferable that the chuck section is linearly reciprocated in the carrying direction by a guide rail extending in the carrying direction.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a member feeding device according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view showing a member feeding device according to this embodiment, and FIG. 2 is a side view showing a main part of the member feeding device. The member feeding device 1 shown in the same drawing is provided with a chuck portion 3 for holding a tip end portion of a wire rod (long member) 2 fed from a winding drum (not shown). The chuck portion 3 includes a first clamp portion 4 located below.
And a second clamp part 5 located above, and a spring part 6 bridged between the first clamp part 4 and the second clamp part 5.
And Therefore, the first clamp part 4 and the second clamp part 5 can be connected via the spring part 6,
The first clamp portion 4 and the second clamp portion 5 cooperate with each other to clamp the tip portion of the wire rod 2.

Further, a pair of left and right guide rails 7 extending in the carrying direction (horizontal direction) A penetrates through the first clamp portion 4, and the guide rails 7 have a shaft shape and a bearing 8 therebetween. It is engaged with the first clamp portion 4. Therefore, the first clamp portion 4 can be slid horizontally along the guide rail 7. In addition, the second clamp portion 5 cooperates with the first clamp portion 4 to make the wire rod 2
And a guide roller 5b for making the pressing piece 5a follow the horizontal movement of the first clamp portion 4. The guide roller 5b is fixed to the pressing piece 5a via the rotating shaft 5c, and projects upward from the pressing piece 5a.

Above the pressing piece 5a, a clamp part vertical movement means 1 for moving the second clamp part 5 up and down.
0 is provided, and a guide rail 11 extending in the transport direction A is fixed to the lower end of the clamp unit vertical movement means 10. Therefore, the guide roller 5 is attached to the guide rail 11.
By contacting b, the second clamp part 5 can be moved along the guide rail 11. The spring portion 6
Thus, the guide roller 5b is biased by the guide rail 11. Therefore, the second clamp portion 5 including the guide roller 5b can be appropriately moved up and down by following up and down movement of the guide rail 11 by the clamp portion up-and-down moving means 10.

The vertical moving means 10 for the clamp portion has a guide rail 13 hanging from a frame 12 extending in the horizontal direction.
It has a block portion 14 that moves up and down through the guide rail 11 is fixed to the lower end of the block portion 14. The block portion 14 is rotatably connected to one end of an L-shaped arm 16 that swings around a support shaft 15, and the other end of the arm 16 has a motor 17 as a drive source and a gear or a friction roller. Are connected via. Therefore, by driving the motor 17, the block portion 14 can be moved up and down via the arm 16.

Here, a tip end portion of a rocking lever 20 is rotatably attached to a first clamp 4 forming a part of the chuck portion 3 via a pivot shaft 19. This swing lever 2
0 extends downward, and a first guide groove 21 extending in the longitudinal direction is formed inside the swing lever 20. In the first guide groove 21, the first guide groove 21
A first slider 22 that slides along the
A drive shaft 23 is erected on the slider 22. As shown in FIG. 3, the drive shaft 23 is connected to a drive cam 24 provided on a shaft 26 extending along the transport direction A, and a cam groove 25 is formed on the entire circumferential surface of the drive cam 24. Has been done. The tip of the drive shaft 23 is fitted in the cam groove 25. Therefore, by rotating the shaft 26 with a motor (not shown), the drive shaft 23 can be swung along the cam groove 25 with a constant swing width. As a result, the swing lever 20 is driven through the drive shaft 23.
Can be swung with a constant swing width. Note that reference numeral B is a guide means for guiding the first slider 22 in the left-right direction.

Further, as shown in FIGS. 1 and 2, a second guide groove 27 extending in the longitudinal direction and communicating with the first guide groove 21 is formed inside the rocking lever 20.
A second slider 28 that slides along the second guide groove 27 is arranged in the second guide groove 27, and a swing that forms a fulcrum of the swing lever 20 is disposed in the second slider 28. The drive shaft 29 is erected. Therefore, by using the second guide groove 27, the swing support shaft 29 can be moved in the longitudinal direction of the swing lever 20. Note that reference numeral C is a guide means for guiding the second slider 28 in the vertical direction, and these guide means B and C are not limited to the illustrated guide rails.

The swing support shaft 29 is located at the end of the swing lever 20 and is connected to the fulcrum cam mechanism 30. The fulcrum cam mechanism 30 is formed on a cylindrical fulcrum cam 31 arranged in parallel to the oscillating lever 20, and is formed on the peripheral surface of the fulcrum cam 31 so as to engage with the oscillating fulcrum shaft 29 and oscillate. A cam groove 32 for continuously varying the support shaft 29 in the longitudinal direction of the swing lever 20 and a step motor 33 for rotating the fulcrum cam 31 in the forward and reverse directions are provided.

A pulley 35 is fixed to the tip of the rotary shaft 34 of the fulcrum cam 31, and a pulley 37 is fixed to the tip of the rotary shaft 36 of the step motor 33. Therefore,
By connecting the pulley 35 and the pulley 37 via the belt 38, the rotary shaft 36 by the step motor 33 is connected.
The step rotation of can be transmitted to the fulcrum cam 31. Then, by step-feeding the fulcrum cam 31 by a predetermined angle, the swing support shaft 29 moving along the cam groove 32 can be moved along the second guide groove 27 of the swing lever 20 by a predetermined amount. it can. Therefore, as shown in FIG. 4, the swing width of the chuck portion 3 can be increased by moving the swing support shaft 29 forming the fulcrum upward (see the chain double-dashed line). By moving downward, the swing width of the chuck portion 3 can be reduced (see the alternate long and short dash line), and the swing lever 20 can be continuously moved as a fulcrum.

The fulcrum cam 31 described above has a linear relationship between the amount of change in the swing support shaft 29 along the longitudinal direction of the swing lever 20 and the amount of change in the extension of the chuck portion 3. Has a cam groove 32.

For example, as shown in FIG. 5, the swing amount S of the drive shaft 23 is set to 4.4 mm, the maximum feed amount P _max of the wire rod 2 is set to 8.8 mm, and the minimum feed amount P _min is 6 mm. ．
The distance a between the upper limit position of the swing support shaft 29 and the drive shaft 23 in the vertical direction is set to 60 mm, and the distance a between the drive shaft 23 and the wire 2 in the vertical direction is set to the above-mentioned distance a. When the same 60 mm is set, the movement amount Y of the swing fulcrum 29 is 0 to 6 as is clear from the following equation (1).
It becomes possible continuously between 0 mm.

Y = a (2S−P) / (P−S) (1) Then, the curve function of the cam groove 32 is Y = aX / (Sα−
X), the relational expression of Y = 60X / 550-X is obtained when the ratio α is set to 125, and this is the timing diagram shown in FIG. By using it, it is possible to establish a linear relationship between the variation amount of the swing support shaft 29 and the feeding variation amount of the chuck portion 3.

Next, a wire rod feeding operation using the member feeding device 1 having the above-described structure will be described. A holding mechanism is provided on the upstream side of the member feeding device 1 for temporarily holding the wire 2.

First, as shown in FIG. 7, the holding piece 41 of the holding mechanism 40 is raised by the piston cylinder mechanism 42, and the holding piece 5a of the second clamp 5 is raised by driving the arm 16. At this time, the tip of the wire rod 2 is placed on the clamp surface 4 a of the first clamp portion 4 while sliding the wire rod 2 on the stage 43 by a wire rod feeding device (not shown).

Next, as shown in FIG. 8, the holding piece 41 is lowered by the piston cylinder mechanism 42 and the wire rod 2 is pressed onto the stage 43 to position the wire rod 2. After that, as shown in FIG. 9, the holding piece 41 maintains the state of positioning the wire 2 while the arm 16 is driven to lower the holding piece 5a, and the holding piece 5a and the first clamp portion 4 cooperate with each other. To chuck the tip of the wire rod 2. Note that the guide lever 11 and the guide roller 5b simultaneously descend as the pressing piece 5a descends.

Thereafter, as shown in FIG. 10, the holding piece 41 is raised by the piston cylinder mechanism 42 to release the wire 2 on the stage 43. After that, as shown in FIG. 11, the drive shaft 23 is swung, and the swing lever 20 is swung forward around the swing support shaft 29, whereby the guide roller 5 a moves along the guide rail 11. The wire 2 is fed by the chuck portion 3 by a predetermined amount. After that, as shown in FIG. 12, the holding piece 41 is lowered by the piston cylinder mechanism 42 while the wire rod 2 is held by the chuck portion 3, and the wire rod 2 is positioned on the stage 43.

Thereafter, as shown in FIG. 13, a holding piece 41
While maintaining the position of the wire rod 2 with the arm 1,
The pressing piece 5a is lifted by driving 6 to release the tip of the wire rod 2. Then, as shown in FIG. 14, the drive shaft 23 is swung to swing the swing lever 2 about the swing support shaft 29.
By swinging back 0, the guide roller 5a moves along the guide rail 11 and returns the chuck portion 3 to the original position. Then, the wire rod 2 fed out by a predetermined amount is chamfered at both ends by a chamfering device (not shown) arranged on the downstream side of the member feeding device 1, and then cut by a cutter (not shown). Therefore, by repeating the above-described operation, it is possible to continuously produce a large amount of one long wire 2 from the short wire 2 (for example, a small and short product called a connector terminal post).

Here, when the length of the post is changed, the step motor 33 has a linear relationship between the change amount of the swing support shaft 29 and the feed amount of the chuck portion 3.
The feeding amount of the chuck portion 3 can be linearly changed according to the number of steps. Therefore, the fulcrum cam 31 is rotated by a predetermined angle by externally supplying a pulse signal corresponding to the increase or decrease of the amount of extension of the chuck portion 3 to the step motor 33, and the swing support shaft 29 is moved along the swing lever 20. Can be moved by a predetermined amount. In addition, in the above-mentioned embodiment, although the wire rod was delivered, it is needless to say that a strip material can be used as the long member.

[0029]

Since the member feeding device according to the present invention is constructed as described above, the following effects can be obtained.

That is, in a member feeding device for feeding a long member by a predetermined amount, a swing support shaft which is provided at the rear end of the swing lever and slides along the longitudinal direction of the swing lever. A drive shaft that is mounted between the swing support shaft and the rotation support shaft of the chuck section and that slides along the longitudinal direction of the swing lever and that moves with a constant swing width in the transport direction; A fulcrum that is connected to the support shaft to continuously change the oscillating support shaft along the longitudinal direction of the oscillating lever and to have a linear relationship between the amount of change of the oscillating support shaft and the amount of change of feeding of the chuck part By providing the cam mechanism, it is possible to easily adjust the feeding amount of the long member without depending on the operator's intuition to set the delicate position of the fulcrum.

The fulcrum cam mechanism is formed on a cylindrical fulcrum cam arranged parallel to the oscillating lever, and is formed on the peripheral surface of the fulcrum cam so as to engage with the oscillating shaft and oscillate. By providing a cam groove for continuously varying the support shaft in the longitudinal direction of the swing lever and a step motor for rotating the fulcrum cam in forward and reverse directions, the change amount of the swing support shaft and the feed change amount of the chuck portion can be adjusted. The linear relationship can be reliably achieved with a simple structure.

Further, the chuck part enables a stable reciprocating linear movement of the chuck part by linearly reciprocating the chuck part in the carrying direction by using a guide rail extending in the carrying direction. It is possible to always keep the amount of feeding the long member by the portion constant.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a member feeding device of the present invention.

FIG. 2 is a side view showing a main part of the member feeding device shown in FIG.

FIG. 3 is a plan view of the member feeding device shown in FIG.

FIG. 4 is a schematic view showing a member feeding device of the present invention.

FIG. 5 is a conceptual diagram showing a relationship between a variation amount of a swing support shaft and a feeding variation amount of a chuck portion.

FIG. 6 is a timing diagram showing a state of cam grooves provided on the peripheral surface of the fulcrum cam.

FIG. 7 is a schematic view showing a state in which the wire rod is fed into the chuck portion.

FIG. 8 is a schematic view showing a state in which a wire rod is positioned by a holding piece.

FIG. 9 is a schematic view showing a state in which a tip portion of a wire rod is clamped by a chuck portion.

FIG. 10 is a schematic view showing a state in which the wire rod is released from the holding piece while the tip portion of the wire rod is held by the chuck portion.

FIG. 11 is a schematic view showing a state in which the wire rod is fed out by a predetermined amount by the operation of the swing lever.

FIG. 12 is a schematic view showing a state in which the drawn wire is positioned by a holding piece.

FIG. 13 is a schematic view showing a state in which the tip portion of the drawn wire rod is released from the chuck portion.

FIG. 14 is a schematic view showing a state in which the chuck portion is returned to the origin position.

FIG. 15 is a front view showing a conventional member feeding device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Member feeding device, 2 ... Long member (wire), 7, 11
… Guide rails, 19… Rotating support shafts, 20… Swing levers,
23 ... Drive shaft, 29 ... Swing support shaft, 30 ... Support cam mechanism,
31 ... fulcrum cam, 32 ... cam groove, 33 ... step motor, A ... conveyance direction.

Claims (3)

[Claims] 1. A front end portion of a long member is held by a chuck portion mounted on a front end portion of a swing lever via a rotation support shaft, and the swing lever is swung to move the chuck portion in a conveying direction. A member feeding device for feeding the long member by a predetermined amount by moving the long member to a rear end portion of the swing lever and sliding along the longitudinal direction of the swing lever. Is mounted between the swing support shaft and the rotation support shaft of the chuck portion, slides along the longitudinal direction of the swing lever, and is fixed in the transport direction. A drive shaft that moves with a swing width; and a swing shaft that is connected to the swing support shaft to continuously change the swing support shaft along the longitudinal direction of the swing lever and a change amount of the swing support shaft, A fulcrum cover that has a linear relationship with the amount of change in the extension of the chuck. A member feeding device, comprising: 2. The fulcrum cam mechanism is formed on a cylindrical fulcrum cam arranged in parallel to the oscillating lever, and is formed on a peripheral surface of the fulcrum cam to engage with the oscillating fulcrum shaft. The member feeding device according to claim 1, further comprising a cam groove for continuously varying the swing support shaft in a longitudinal direction of the swing lever, and a step motor for rotating the support cam in forward and reverse directions. apparatus. 3. The member feeding device according to claim 1, wherein the chuck portion is linearly reciprocated in the carrying direction by a guide rail extending in the carrying direction.