JPS5930003B2 - Coated wire cutting/coating stripping method and device - Google Patents

Description

[Detailed Description of the Invention] Conventionally, a set of two opposing core wire cutting blades A and a set of two coating cutting/stripping blades B are arranged parallel to each other and facing each other on both sides.
A wire rod of a predetermined length is supplied to a cutting blade group C equipped with a set of two by a feeding roller D,
The opening and closing movement of the cutting blade group C simultaneously cuts the core wire of the wire W and cuts the coating on both sides of the cutting portion, and lamps E and E' that can be opened and closed are arranged on both sides of the cutting blade group C, and the feeding Moving platform F that integrates roller D and clamp E
and anti-cutting blade group C of movable base B of clamp E'.
There is a covered wire cutting/covering stripping machine which performs a wire tensioning action by moving in the direction of the wire, thereby stripping the coating on both sides of the cut portion.

Figures 1 to 4 are explanatory diagrams of each of the aforementioned steps. Figure 1 shows the state in which the wire rod is being supplied by the feeding roller D, Figure 2 shows the closed state of the cutting blade group C and clamps E and E', and Figure 3 shows the movement. Platform F, F'
Fig. 4 shows a state in which the cutting blade group C and clamp E' are opened and the movable tables F and F' are returned to their original positions, and then the operations from Fig. 1 onward are repeated again. It is something.

However, the adjustment of the sheathing stripping length Lj t''2 on both sides of the cutting part in the above-mentioned method is as shown in FIG. L; , Spacer G of various thicknesses interposed in L4 part
It was due to the insertion and removal of the

Therefore, each time the coating stripping length, L2, is changed, the cutting blade group C must be disassembled and a spacer G of a different thickness prepared in advance must be selected, and the tightening screw H must be selected.
When tightening the cutting blades, be careful to ensure that the heights of each cutting blade A, B, and B' are not uneven or tilted, and it is very complicated to add and reduce tightening from both sides to obtain accurate occlusion of all opposing blades. This is a time-consuming process, and particularly when the gap adjustment frequency is high, a large amount of time is required for the gap adjustment, which causes a significant drop in processing capacity.

In view of the above-mentioned circumstances, the present invention provides a first step of intermittently feeding a predetermined cut eldest wire rod, a second step of cutting the fed wire material, and a predetermined coating cut position of the cut wire rod and remaining wire material at each coating cutting blade position. A third step of moving the wire rods up to the point where they are cut, a fourth step of cutting the wire rods to make a covering cut, a fifth step of moving the wire rods forward or backward to remove the cut wire rods, and discharging the wire rods from which the wire rods have been cut and the covering has been removed. By providing a method for cutting and stripping coated wire, which consists of the sixth step, and an apparatus for carrying out the method, it is possible to easily perform small-lot production of a wide variety of products with different stripping lengths without requiring any skill. The purpose of this is to prevent a decrease in processing capacity by adjusting the processing capacity.

To explain in detail with the embodiment shown in FIG.
A set of core wire cutting blades 2, 2' and a set of two coating cutting and stripping blades 3, 3', 4, each arranged in parallel and facing each other on both sides of the cutting blades.
4', and the distance between the core wire cutting blades 2, 2' and each coating cutting and stripping blade 3, 3', 4, 4' is set to the maximum coating stripping length lI m, 12 m. The cutting blades 2, 2', 3, 3' and 4°4' of each set are opened and closed separately by the operation of air cylinders 55', 66' and 7γ provided respectively. It is.

Reference numeral 89 denotes left and right movable tables arranged on both sides of the cutting blade group 1, which feed the wire W by a distance slightly longer than the maximum coating stripping length '1 m + 12 rn by the operation of air cylinders io and ii, respectively. It can move in a direction parallel to the axis X and toward the opposite side of the cutting blade group 1.

12.12' is a pair of first feed rollers that are pivotally supported on the left moving table 8, and a gear 13 that is fixed to each pivot.
, 13' are meshed with each other and are driven by a forward/reverse pulse control motor 14 connected to the first drive side roller 12 via a length measurement and morph control mechanism (details will be described later). The wire W from the wire supply source (not shown) arranged on the left is intermittently fed to the right along the feeding axis X, and after the core wire is cut by the closing operation of the core wire cutting blades 2 and 2'. Reversely, the distance from the cut end of the residual wire W to the left coating cutting and stripping blades 3, 3', that is, the coating stripping length l on the residual wire W side, The remaining wire rod W is moved backward to the left so that the length of the wire rod becomes a predetermined amount.

Reference numerals 15 and 15' designate a set of two second feeding rollers, of which the seventh driving roller 15 is pivotally supported on the right moving table 9, and its shaft end is connected to a pulse control motor 16. The side roller 15' is rotatably supported at one end of a bell crank 17 whose intermediate portion is rotatably supported on the right movable table 9, and is normally supported by gears 18.1 fixed to the shafts of both rollers 15 and 15'.
8' face each other closely so as to mesh with each other, and are separated from the driving roller 15 at appropriate times by the operation of an air cylinder 19 attached to the other end of the bell crank 17.

Both rollers 15 and 15' are connected to the length measuring and motor control mechanism (
The distance from the left cut end of the cutting wire V to the right coating cutting and stripping blades 4, 4', that is, the coating stripping length 12 of the left end of the cutting wire J The cut wire L is moved forward to the right so that the cut wire J is a predetermined amount, and the cut wire J is also driven in the same direction as described above when discharging the cut wire I from the machine after stripping the coating, which will be described later. This means moving it further to the right.

20 , 20 ′, 21 , 21 ′ are a pair of front and rear left feed rollers that are pivotally supported on left and right moving tables 8 and 9 on the right side of the first and second feed rollers 12 , 12 ′, 15 , and 15 ′, respectively.・Sector gears 22 and 22' fixed to each axis with the right clamp
.
The opening/closing operation is performed by the operation of 5.

7 and 8 show the first and second feeding rollers 12,
It is a control block diagram of the length measurement and motor control mechanism in 12', 15, and 15'.

In FIG. 7, reference numerals 26 and 27 are first and second digital switches for setting the cutting length y and the residual wire W side coating stripping length 11, respectively.
If you set the value of , the value of 11 will enter the subtracter 28,
The 11m value (core wire cutting blade 2,
2' and the left sheathing cutting and stripping blades 3, 3), and the calculated value (l! It enters adder 30.

On the other hand, the value of y enters the adder 30;
0, the actual feeding length y of the wire W is obtained by adding y+(l1m-21), and this value y is input to the pulse number setting device 31 for normal rotation of the motor.

The motor forward rotation and reverse rotation pulse number setting device 31.2
9 respectively the above y and (11m-11)? The number of pulses corresponding to P1. P2 is set and these values P1
+P2 enter comparator circuits 32 and 33, respectively.

Thus, the pulse control motor 14 is rotated forward or reverse in response to command signals from the forward (feeding) or reverse (positioning) drive command circuits 34 and 35, and the pulse generator 36 is used to control the motor 1.
Generates a number of pulses proportional to the rotation speed of 4.

The comparison circuits 32 and 33 receive the input of the number of generated pulses P from the pulse generator 36, and when the P value matches Pl or P2, issue a stop command signal to the drive stop command circuit 37 to drive the motor 14. It is like stopping.

In FIG. 8, 38 is a third digital switch for setting the length 12 of the V-side sheathing removed from the cut wire.If the 12 values are set before operating the device, the 12 values It enters the subtracter 39, and is subtracted from the 12m value (distance between the core wire cutting blades 2, 2' and the right side coating cutting and stripping blades 4, 4') preset in the subtracter 39, and the calculated value (12m n2) , that is, the movement adjustment value of the cut wire l enters the pulse number setting device 40,
A pulse number pH corresponding to the above (12m-12) is set in the setter 40, and the set pulse number pH is set in the comparator circuit 4.
Enter 1.

42 is a pulse number setting device which sets the number of pulses P12 necessary to discharge the cut wire V out of the machine, and this set number of pulses P12 is entered into a comparison circuit 43.

The pulse control motor 16 is thus driven by a command signal from the positioning and ejection 1 drive command circuit 44, 45, and the pulse generator 46 generates a number of pulses proportional to the number of rotations of the motor 16.

The comparison circuits 41 and 43 receive the input of the number of generated pulses PIO from the pulse generator 46, and when the P1o value matches pH or Pl2, issue a stop command signal to the drive stop command circuit 47 to drive the motor 16. It is like stopping.

Reference numerals 48, 49, and 50 indicate tubular wire rod guides, which are located to the left of the first feed rollers 12, 12' and to the left clamp 20, respectively.
, 20' and the left coating cutting/peeling blades 3, 3', and between the right coating cutting/peeling blades 4, 4' and the second feeding rollers 15, 15'.
The wire rod guide 48 is arranged concentrically with the feeding axis X between the wire guide 48 and the left moving table 8, and only the wire guide 48 moves integrally with the left moving table 8.
The other wire guides 49° and 50 are fixed.

Next, the operation of the present invention will be explained in accordance with the timing chart of FIG. 16.

The starting point of the explanation is TI (-T13). At this time, the second feed rollers 15 and 15' are driven to discharge the cut wire W' from which the coating has been stripped at both ends to the outside of the machine, and perform the opening operation. It is in a state of completion.

In addition, the first feeding roller 1212' is in the 1 drive stopped state, the core wire cutting blades 2, 2', the coating cutting and stripping blades 3, 3', and 4, 4.
', left clamp 20°20', right clamp 21,21'
are both in the open state, and furthermore, the left moving table 8 and the right moving table 9 are in the open state.
has returned to its original position.

Time T1→T2... Normal rotation drive of the pulse control motor 14 (7 drive command circuit by signal S1 issued from a limit switch (not shown) as appropriate upon completion of opening operation of the second feed rollers 15, 15') (driven via 34)
As a result, the first feeding rollers 12 and 12' rotate normally, and the wire rod W
is fed by the length of y' determined by the adder 30 in FIG. 7 and then stopped (FIG. 9).

Time T2→T4...Second feeding rollers 15, 15'
closes and clamps the fed wire W (T2→T3)
Then, the core wire cutting blades 2, 2' close and cut the wire W (T3→T4) (FIG. 10).

Time T4→T6...Reverse rotation 1 of pulse control motor 14
Drive (signal S emitted from an appropriate limit switch (not shown) upon completion of the closing operation of the core wire cutting blades 2, 2')
2 through the reverse drive command circuit 35), the first feed roller 12°1'2' is reversed and moves the remaining wire W by a length of (ltm-l,) to the left. After that, the wire is stopped (T4→T6), and as a result, the coating stripping length 11 on the remaining wire W side is accurately adjusted and positioned.

Similarly, by driving the pulse control motor 16 (driven by the signal S2 via the positioning drive command circuit 44), the second feeding rollers 15 and 15' rotate to cut the wire l by (12 m-12). After moving to the right by the length of , it stops (T4→T5), thereby accurately adjusting and positioning the coating stripping length 12 on the cut wire W' side.

At the same time, the core wire cutting blades 2, 2' open from closed (T4→T
5) (Figure 11).

Time T6→T8...The left clamps 20, 20' and the right clamps 21, 21' close to grip the remaining wire W and the cut wire W', respectively (T6→T7), and then the coating cutting and stripping blade 3, 3' and 4°4' are closed to cut the covering of the remaining wire W and the cut wire J, respectively (
T7→T8) (Figure 12).

Time T8→T9...The left and right moving tables 8 and 9 move to the left and right, respectively, thereby pulling out the cut coatings at the right and left ends of the remaining wire W and the cut wire W' (
Figure 13).

Time T6→T11...Coating cutting stripping blade 3, 3.4.
4' and the left and right clamps 20, 2σ, 21°21' are opened (T9→T10), and then the right clamp 21
．． As the opening operation of 21' is completed, the limit switch (
The pulse control motor 16 is driven via the discharge drive command circuit 45 in response to a signal S3 emitted from a motor (not shown), so that the second feed rollers 15 and 15' start rotating (T10), and at the same time, the The movable tables 8 and 9 return to their original positions (T9→T11) (FIG. 14).

Time T11→T13...The rotation of the second feeding roller 15°15' is stopped, and the cut wire W' whose coating has been stripped from both ends is sent to an appropriate receiving box (not shown) provided outside the machine. (T10→T12), and at the same time as it stops, the second feeding rollers i s and i s' are opened (T1
2→T13) (Fig. 15).

By repeating each of the above steps as one cycle,
Cutting that follows intermittent feeding of wire to a predetermined size from a wire supply source, and advancing or retreating to the cutting blade position to cut the remaining wire and the cut wire at a predetermined sheathing stripping length. It is possible to continuously carry out movement, cutting and stripping of the coating, and discharge of the cut wire W' from which the coating has been stripped from both ends.

Note that the roller for feeding the wire for the predetermined cutting length and the roller for adjusting the coating stripping length on the remaining wire side may not be used together but may be provided separately, and in the above embodiment, the core wire cutting blades 2, 2'
Covering cutting stripping blade 3, 3', 4°4', left/right hand pump 2
0, 20', 21.21', and second feeding roller 15
, 15' and the displacement of the left and right moving tables 8 and 9 were all performed by air cylinders.
The same effect can be achieved by interlocking with other actuating cylinders, solenoids, or transmission mechanisms such as cam links, racks, and pinions.

Further, although the above-mentioned embodiments are based on the roller feed method, the same effect can be achieved by using both a wire drawing clamp and a wire gripping clamp as shown in FIGS. 17 to 24 below.

That is, in this embodiment, core wire cutting blades 101, 101' and coating cutting and stripping blades 102, 1 disposed on both sides of the cutting blades are used.
A cutting blade group 104 consisting of 02′, 103°103′,
A wire rod gripping clamp 105 that can be opened and closed and placed on the wire rod supply source side (hereinafter referred to as the left side) of the cutting blade group 104 and can be moved to the left at any time, and a wire rod that can be opened and closed that is placed on the right side of the cutting blade group 104. It is equipped with a guide tool 106 (which guides the wire rod W in the closed state), the cutting blade group 104, the wire gripping clamp 105, a wire rod drawer clamp 107 that can be opened and closed and that can reciprocate through the wire rod guide tool 106, and the like. The operation will be briefly explained below in the order of each step shown in FIGS. 17-24.

First, the wire rod pull-out clamp 107 is in the open state of the cutting blade group 10.
4. The wire W from the wire supply source (not shown) is passed between the wire rod gripping clamp 105 and the wire guide tool 106 to the right.
is withdrawn by a predetermined amount (Fig. 17).

Next, the wire gripping clamp 105 and the wire guide tool 106
is closed, and a little later the core wire cutting blades 101 and 101' are also closed to cut the drawer wire W to a predetermined size (No. 18).
figure).

At this time, the remaining wire W is held by a wire gripping clamp 105, and the cut wire W' is prevented from hanging down by a wire guide 106.

Thereafter, the wire rod gripping clamp 105 and the wire rod pull-out clamp 107 each move a predetermined amount toward the side opposite to the cutting blade group, and the coating stripping lengths at the right end of the remaining wire rod W and the left end of the cut wire rod W' are adjusted accurately, and at the same time The core wire cutting blades 101, 101' are opened (FIG. 19).

In this state, the coating cutting and stripping blades 102, 102', 103
, 103' are closed, and the remaining wire W and the cut wire W' are covered and cut (FIG. 20).

Next, the wire rod gripping clamp 105 and the wire rod pull-out clamp 107 further move toward the opposite cutting blade group, and the respective cut coatings are stripped off (FIG. 21).

The coating cutting and stripping blade 102° 102', the wire guide tool 10
6 and the wire rod pull-out clamp 107 are both opened, and the cut wire W' whose coating has been stripped off at both ends falls into a receiving box (not shown), and at the same time, the wire rod gripping clamp 10
5 returns to the original position while holding the residual wire W (second
Figure 2).

Further, the wire rod drawing clamp 107 remains open, and the wire rod guide tool 106, the cutting blade group 104, and the wire rod gripping clamp 10
5 and move to the left side of the gripping clamp, and remove the remaining wire W.
(Figure 23).

Thereafter, the wire rod holding clamp 105 is opened to release the remaining wire rod W.

This completes one cycle, and the wire rod drawer clamp 107
The next cycle starts from the operation of pulling out the wire W (FIG. 17).

As detailed above, in the present invention, the distance between the core wire cutting blade and the coating cutting/stripping blade is kept constant, and the process of moving the cut wire material and the remaining wire material after cutting with respect to the coating cutting/stripping blade is performed in a series of steps. By incorporating it into the process, a predetermined coating stripping length can be obtained, making it ideal for high-mix, low-volume production where coating stripping lengths often vary, and eliminating the need for time-consuming adjustment of cutting blade spacing as with conventional products. In addition, since the stripping length can be easily adjusted by adjusting the wire feeding length and cutting length, using a dial with a numerical display function, etc., a decrease in efficiency can be prevented.

[Brief explanation of the drawing]

Fig. 1 is an exploded explanatory view of a group of cutting blades in a conventional sheathed wire cutting/coating stripping device, Figs. 2 to 5 are action explanatory diagrams of a conventional sheathed wire cutting/coating stripping device, and Fig. 6 is an inventive one. Figures 7 and 8 are control block diagrams of the present invention, Figures 9 to 15 are explanatory diagrams of the operation of the present invention, Figure 16 is a time chart of the present invention, and Figures 17 to 24 are diagrams of the present invention. FIG. 7 is an explanatory diagram of the operation in another embodiment of the invention. In the figure, 1 is a group of cutting blades, 8 is a left moving table, 9 is a right moving table, 1
2.12' is the first feeding roller, 14, 16 are pulse control motors, 15, 15' are the second feeding rollers, 20, 2
0' is the left clamp, 21.21' is the right clamp, and W is the wire rod.

Claims (1)

[Scope of Claims] 1. A first step of intermittently feeding the coated wire at a predetermined length, a second step of cutting the fed wire, and a predetermined coat cut position of the cut wire and the remaining wire at each coat cutting blade position. A third step of moving the wire rods up to the point where they are cut, a fourth step of cutting the wire rods to make a covering cut, a fifth step of moving the wire rods forward or backward to remove the cut wire rods, and discharging the wire rods from which the wire rods have been cut and the covering has been removed. A method for cutting and stripping a coated wire, comprising a sixth step. 2. The coated wire cutting/coating stripping method according to claim 1, wherein the third step is carried out by a set of two rollers whose rotation amount can be changed on each of the cut wire side and the remaining wire side. . 3. The covered wire cutting/cutting method according to claim 2, wherein the transfer of the residual wire side in the third step is performed by a set of two rollers that also serve as intermittent feeding in the first step by forward and reverse rotation. How to remove the coating. 4. The coated wire cutting/coating stripping method according to claim 1, wherein in the third step, the wire is moved by a wire holding clamp that can change the amount of movement on each of the cut wire side and the remaining wire side. 5. The coated wire according to claim 1, wherein the fifth step is a means for moving each of the cut wire rod side and the remaining wire rod side in the third step, or a wire gripping means is moved together with the moving means. Cutting and coating removal method. 6 In a machine that intermittently feeds a long wire rod for predetermined cutting, a set of two coated cutting blades are arranged in parallel on both sides of a pair of opposing core wire cutting blades with an interval of at least the maximum coating stripping length. These two cutting blades face each other so that they can be opened and closed separately, and a wire transfer device with a display function and the ability to change the amount of movement is arranged on the downstream and upstream sides of the two cutting blade groups, respectively, to cut the core wire. A coating cutting/coating stripping device characterized in that the cut and remaining wire rods are moved forward or backward by the subsequent driving of the wire transfer device, so that the respective coating cutting positions reach the coating cutting blade. 7. The wire rod transfer device is provided on a movable table together with an appropriate wire gripping device that can be opened and closed, and the movable table is movable back and forth along the wire transfer line by an appropriate transfer mechanism such as a cylinder, and is used for cutting and cutting after cutting the coating. Cutting the coated wire according to claim 6, wherein the coated wire is removed by moving the cut wire side toward the downstream side and the remaining wire side toward the upstream side by an appropriate amount while holding the residual wire rod.・Coating stripping device. 8. The coating according to claim 6, wherein the wire transfer device comprises a set of two feeding rollers rotated by a pulse control motor whose rotation amount is controlled using a digital switch interlocked with a subtraction mechanism. Wire cutting and coating stripping equipment. 9 The upstream side (residual wire side) of the wire transfer device is
It consists of a set of two feed rollers that are rotated in forward and reverse directions by a pulse control motor whose forward and reverse rotation amount is controlled using two digital switches that are respectively linked to a subtraction mechanism and an addition mechanism. The coated wire cutting/coating stripping device according to claim 8, which also has an intermittent feeding function.