JPS6217838B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, two pairs of coating cutting and stripping blades are arranged in parallel and opposite to each other on both sides of a pair of opposing core wire cutting blades, and three sets of these cutting blades are arranged in parallel. A wire supply clamp is provided that reciprocates through the group of cutting blades in a square direction,
Cutting and stripping of the coated wire by pulling out the wire from the wire supply reel using the clamp, and pulling out the coating at both ends by alternately pulling the wire in the front and back direction along the wire pull-out line after cutting. Devices (commonly referred to as wire strippers) are already known, such as from US Pat. Nos. 2,497,112 and 2,571,078.

The cut wire rods whose ends have been stripped by the wire stripper are then bundled by hand or by a separate automatic soldering device, or soldered at the ends one by one. I was doing the fitting. However, in either manual soldering or automatic soldering equipment, the cut wire leaves the wire stripper and becomes free, so the ends of the bundled wire must be realigned to maintain a constant soldering allowance. Must be. A common method for aligning the ends of the wire is to place the ends of multiple wires against a patch plate and re-grasp them, but in this case, the ends of the wire often come loose and the soldering finish is poor. becomes heterogeneous.

If the process using the wire stripper and the soldering process are separated in this way, not only is there a problem with the soldering finish, but manual soldering requires skill, and a separate automatic soldering machine is required. However, there were various problems such as relatively high equipment costs.

Furthermore, when soldering the ends of wire rods using an automatic machine, the most cost-effective method is to pass the molten solder liquid horizontally through the downstream area, but in this case, unless the solder length is short, As shown in Fig. 1, a bead-shaped surplus solder Q is formed on the rear side of the end of the wire when passing through the downstream area, which has the disadvantage that it may become unusable depending on the purpose of use.

In contrast, the above-mentioned drawbacks can be overcome by using a downward dipping method as disclosed in Japanese Patent Laid-Open No. 107454/1983, which the present applicant previously filed.

However, the apparatus of the above-mentioned application was an expensive device because the mechanism for transferring the cut wire and dipping it into the molten solder bath was complicated.

In view of the above-mentioned current situation, the present invention is aimed at soldering only to the one-sided coated end of a cut wire rod, in order to obtain a good solder finish product using a horizontal transfer method that can be relatively inexpensive. By incorporating a wire rod horizontal transfer device between the wire stripper and the soldering device, it is possible to cut the coated wire to a predetermined size, strip the end coating, transfer the cut wire to the soldering device, and cover the cut wire. It is an object of the present invention to provide a covered wire soldering machine that automatically and continuously performs soldering to stripped ends as a series of steps.

Hereinafter, a detailed description will be given based on the embodiments shown in the figures. For convenience of explanation, the arrow A direction and counter-arrow A direction in FIG. 2 will be referred to as right and left, respectively, or the arrow B direction and counter-arrow B
The directions are called front and rear, respectively.

In Fig. 2, 1 is a wire stripper having the same structure as a conventionally known wire stripper, 2 is a wire supply reel, and 3 is a set of two opposing core wire cutting blades arranged parallel to each other on both sides. A cutting blade group 4 consisting of three sets of two coated coating cutting and stripping blades reciprocates through the cutting blade group in the parallel direction of the cutting blade group 3 to draw out the wire 5 from the wire rod supply reel 2. Furthermore, this is a drawer clamp that pulls out the coating from only the right side of the cut wire 6, and the cutting blade group 3 and the drawer clamp 4 are interlocked by an appropriate interlocking mechanism (not shown) provided inside the main body.

Reference numeral 7 denotes a wire rod transfer device, which extends perpendicularly from the side of the cutting blade group 3 on the downstream side in the wire rod supply direction, and wire rod clamping claws 8 arranged at an appropriate number at equal intervals on an endless chain 18 to be described later. In conjunction with the operation of the stripper 1, the stripper 1 is driven intermittently in circulation for each pitch. The wire transfer device 7 has a shaft 1 pivoted near the transfer end of a base 9 that supports the transfer device.
0 as a fulcrum, the transfer starting end side of the base 9 and the wire transfer device 7 are connected by an air cylinder 11, and are normally held at the downstream position in the wire supply direction (hereinafter referred to as the right position). The rod is moved to the upstream position (hereinafter referred to as the left position) in the wire rod supply direction by the rod extension operation of the air cylinder 11 at appropriate times.

As shown in detail in FIG.
4, stepped pin 15, compression spring 16, connecting pin 17
etc., and are provided at equal intervals on the endless chain 18. That is, the support plates 12', 12' have endless chains 18
The connecting pin 17 holds one link of
The transfer device 7 pivots on the link so as to be able to swing freely.
A guide plate 20 protruding horizontally from the frame 19 of
The robot moves along the upper horizontal section while being guided along the bottom. Furthermore, both the support plates 12, 12'
The front and rear parts are connected by a stepped pin 15 and a set screw 21, and front and rear claw fittings 13 and 14 with gears that engage with each other at the upper center are pivotally connected by pins 22 and 23, Only the pin 22 of the front claw metal fitting 13 passes through the right support plate 12 to the outside and fixes a pushing claw 24 extending downward at the projecting end.

The front claw metal fitting 13 swingably supports a channel-shaped flat claw 25 above, and the rear claw metal fitting 14 supports the cutting wire 6 in a horizontal direction perpendicular to the transfer direction between the front claw metal fitting 13 and the flat claw 25. As if I could hold it,
A saw blade-like claw portion 14a is formed. Furthermore, grooves are cut in the shoulders of both the front and rear claw fittings 13 and 14, and a shoulder pin 26 is pivotally attached to the shoulder pin 26 by a pin 27.
A compression spring 16 is interposed between each shoulder of the shoulder 6 and the stepped pin 15, and the tip of the shoulder pin 26 is inserted into a guide hole 28 provided in the stepped pin 15, and the spring of the compression spring 16 is inserted. Depending on the force, the front and rear claw metal fittings 1 are always attached.
3 and 14 close their claws so that they can clamp the wire, and by pushing the pushing claws 24 from outside, the front and rear claw fittings 13 and 14 move outward around the pins 22 and 23. Open, pin 27 is stepped pin 1
5 and the pins 22 and 23, the open state is maintained at the position rotated to the outside of the line connecting the pins 22 and 23.

Reference numeral 29 denotes a push roller for opening the wire rod clamping claw which is protruded from the frame 19 at the end of the transfer of the wire transfer device 7, and when the wire clamping claw 8 in the state of clamping the wire passes through the end of the transfer, the push roller 29 projects from the frame 19 at the end of the transfer. engage with
Furthermore, by rotating the endless chain 18, the wire rod clamping claws 8 are opened as shown in FIG. 4, so that the processed cut wire rod 6 is dropped into the receiving tray 30.

Reference numeral 31 denotes a lever for closing a wire clamping claw, which has an intermediate bending part pivotally supported on the frame 19 at the transfer start end of the wire transport device 7, and a lever 31 for closing a solenoid 33, which has a roller 32 pivotally supported on its upper end and fixed to the frame 19 at its lower end. The inner side of the pushing claw 24 of the wire rod clamping claw 8 is connected and oscillated by the excitation of the solenoid 33 that is linked to the operation of the wire stripper 1 side, and the roller 32 is stopped in an open state just below the wire drawing line. is pushed in the closing direction, the front and rear claw metal fittings 13 and 14 are closed, the drawn wire 5 is held by the drawer clamp 4, and the tension created between it and the frame 19 is removed by demagnetizing the solenoid 33. It is arranged so that it can be returned to its original position by the spring force of the spring 34.

Reference numeral 35 denotes a flux coating device installed on the left side of the wire transfer device 7, which injects the flux F sucked from the flux tank 37 downward from the injection nozzle 38 into the flux tank 37 by the constant operation of the circulation pump 36. When the wire transfer device 7 is circulated while being held at the right position by the air cylinder 11, the stripped end 6a of the cut wire 6 held by the wire holding claws 8 enters the sprayed flux area.
It is arranged so that it passes through FA and flux F is applied to that part.

Reference numeral 39 denotes a soldering device of the molten solder liquid flowing type installed in front of the stopping position of the wire rod clamping claws 8 downstream of the flux coating device 35 in the wire rod transfer direction, and as shown in FIG. The tank is filled with liquid S, and the molten liquid S is heated and maintained at a predetermined temperature by a solder heating melter 41 equipped with a thermostat provided at the bottom of the tank.

Reference numeral 42 denotes an L-shaped guide tube, the horizontal part 42a of which is sunk in the intermediate depth position of the solder tank 40, the vertical part 42b led out above the solder tank 40, and the base end of the horizontal part 42a is provided with an upwardly opening inlet. A portion 42a ₁ is formed, and an outlet portion 42b ₁ is formed at the upper portion of the vertical portion 42b. The outlet portion 42b ₁ has an upper end bent to the right and is formed into an upward opening, and a notch 42b ₁₁ for overflowing the melt S is cut at the upper edge of the upward opening at the upper end on the side opposite to the bend. be. In addition, a rectangular flow outlet 42b 13 is opened in the bent bottom plate 42b ₁₂ of the outlet portion 42b ₁ , and a rectangular flow guide plate 42b ₁₄ is inclined slightly downward to the left along the right edge of the flow outlet 42b _{13 .} is fixedly installed (Figure 7).

Reference numeral 43 denotes a rotary blade facing into the inlet port _42a1 , which is driven through an appropriate transmission mechanism consisting of a pulley 44 fixed to the shaft end led out of the solder tank 40, an endless belt 45 wrapped around the pulley, etc. , solder tank 40
It is rotated by the drive of a motor 46 installed on the outer surface of the. Due to the rotation of the rotary vane 43, the molten solder liquid S in the solder tank 40 is sucked into the opening of the inflow port _42a1 , flows through the guide pipe 42, and flows into the downstream port 42.
The melt S flows down from _b13 in a waterfall shape while being guided by the flow guide plates _42b14 , and the excess melt S overflows from the notch _42b11 and returns to the solder tank 40.

Incidentally, the downstream guide plate 42b ₁₄ may be a downstream guide plate 101 whose inclination angle can be adjusted by an adjusting screw mechanism 100 as shown in FIG.

Next, while referring to the action explanatory diagrams in FIGS. 9 to 12 and the time chart in FIG.
The effect in the example will be explained.

The starting point of the explanation is time T1 (=T12), and at this time, on the wire stripper 1 side, the drawer clamp 4 is in the left position of the cutting blade group 3, and the cutting blade group 3 is in the closed state. The coating has been removed from the right end of the remaining wire 5 by the method, and the cutting blade group 3 is now in an open state. Further, the wire rod transfer device 7 maintains the rod shortening of the air cylinder 11 and holds it in the right position using the shaft 10 as a fulcrum, and stops driving the endless chain 18, and one of the wire rod clamping claws 8 pulls out the wire rod at the transfer starting end. It is waiting in an open state just below the line. moreover,
The cut wire 6, which can be held by the wire holding claws 8 stopped in front of the soldering device 39, is in the injection flux area during the circulating drive of the wire transfer device 7 in the previous cycle.
When passing through the FA, flux F has already been applied to the coating stripped end 6a (FIG. 9), and this end has now retreated slightly to the right of the solder flow area SA (FIG. 10).

Time T1→T3...The drawer clamp 4, while gripping the remaining wire 5, passes to the right between the cutting blade group 3 in the open state and above the wire rod clamping claw 8 in the open state, and pulls the wire 5 to a predetermined length. Pull out.

At time T2, which is slightly before the completion of drawing out the wire rod 5 by the above-mentioned drawing clamp 4, the air cylinder 11 is activated (rod is extended) and the wire transfer device 7 is activated.
is moved to the left position, and the soldering device 3 is moved accordingly.
The sheathing stripped end 6a of the cut wire 6 that can be held by the wire holding claw 8 in the front 9 moves to the left in the axial direction (the first
(Fig. 0), the melt enters the downstream area SA (Fig. 11).
figure).

Further, the wire rod clamping claw 8 at the starting end of the transfer is held at a constant position from the cutting blade group 3 by an appropriate stopper (not shown).

Time T3→T4... When the drawer clamp 4 stops at the rightward position, the lever 31 swings due to the excitation of the solenoid 33 at the transfer start end, and the wire rod clamping claw 8 is closed to clamp the wire rod 5.

Time T4→T5...The drawer clamp 4 opens and the wire rod 5 is released. Further, the cutting blade group 3 closes to cut the wire 5 to a predetermined size, and at the same time, incisions are made in the coverings of the remaining wire 5 and the opposite ends of the cut wire 6 on both sides of the cutting position. at this point
The wire clamping claws 8 clamp the cut wire 6, and the distance from the clamping position to the tip of the left end of the cut wire 6 is constant.

Time T5→T7...The drawer clamp 4 in the open state passes above the cutting blade group 3 in the closed state and moves to the leftward position (upstream side) (T6). Air cylinder 11 is deactivated at time T5 (rod shortened)
Then, the wire transfer device 7 again swings about the shaft 10 and is held at the right position (downstream side). Along with this, the wire clamping claw 8 in front of the soldering device 39 also moves to the right, so the soldered cut wire 6 moves to the right in the axial direction and retreats from the solder flow area SA (Fig. 12). ). The period of time T3 to T5 is set so that the time during which the coating stripped end 6a of the cut wire 6 faces the melt flow area SA, that is, the soldering period, is about 0.5 seconds.

Time T7→T8...The wire transfer device 7 drives the endless chain 18 by one pitch. During this time, the wire clamping claw 8, which was located upstream of the soldering device 39,
The stripped end 6a of the cut wire 6, which can be held by the wire rod 6, passes through the flux application area FA and is coated with the flux F. Also, the wire clamping claw 8 that has reached the end of the transfer
is opened by engagement with the pushing roller 29 to release the soldered cut wire 6, and the wire 6 falls and is stored in the receiving tray 30. Furthermore, the wire clamping claw 8 that has reached the transfer start end remains open and stands by just below the lead-out line.

Time T8→T10……Drawer clamp 4 mentioned above
reaches a predetermined position to the left of the cutting blade group 3 in the closed state and stops (T9), and simultaneously closes and grips the remaining wire 5.

Time T10→T11...The drawer clamp 4 moves a slight distance to the left with the cutting blade group 3 in the closed state, and strips off the coating on the right end of the wire 5.

Time T11→T12... Cutting blade group 3 opens.

By repeating the above steps as one cycle, the wire rod 5 is drawn out from the wire rod supply reel 2, followed by cutting to a predetermined size, stripping off the coating from both ends, and soldering only one end. The finished product is sent into the receiving tray 30, and all of this is done fully automatically.

In the first embodiment described above, the oscillating movement of the wire transfer device 7 was used to both remove the coating on the soldering side and insert/remove the coating peeled end into the molten solder flow region. When stripping is performed using the pull-out clamp 4, instead of the swinging of the transfer device 7, a separate mechanism must be used to insert and remove the coating stripping end from the molten solder flow region. This case will be explained below using a second embodiment.

In the second embodiment, the air cylinder 1 of the first embodiment is
1 is unnecessary, and the wire rod transfer device 107 is always installed at the left position in the first embodiment, and during one pitch driving period in this state, the coated end of the cut wire rod 106 held by the wire rod holding claws 108 is removed. The flux applicator 135 is arranged so that the flux applicator 106a passes through the flux applicator area FA'.

As shown in FIGS. 14 and 15, near a position in front of a soldering device 139 having the same configuration as that of the first embodiment, the wire transfer device 107 temporarily opens a wire gripping/pulling device 200 and a clamping claw on the base 109 and the frame 119, respectively. A tool 300 is provided.

The wire gripping and tensioning tool 200 includes an air cylinder 201 installed on a base 109, a solenoid 202 installed upright at the tip of a rod extending from left to right of the air cylinder 201, and a solenoid 202 attached to the tip of the rod extending upward from the solenoid 202. It consists of a gripping claw 203 that can be opened and closed upward by the operation of the solenoid 202.

The clamping claw temporary opening tool 300 also includes an L-shaped lever 30 whose intermediate bent portion is pivotally supported on the frame 119.
1, and a roller 3 pivotally supported at one end of the lever 301.
02, a solenoid 303 whose rod tip is pivotally connected to the other end of the L-shaped lever 301, and a tension spring stretched between the L-shaped lever 301 and the frame 119 so as to bias the roller 302 side downward. 304.

The operation of the second embodiment having the above configuration will be briefly explained with reference to FIG. 13 and FIGS. 16 to 20.

In the time chart of FIG. 13, the movement and opening/closing of the drawer clamp 104, the opening/closing of the cutting blade group 103, and the wire rod clamping claw 108 at the transfer start end
Opening/closing is different from the first embodiment as shown by dotted lines. That is, the drawer clamp 104 passes between the cutting blade groups 103 in the open state, pulls out the wire 105 to the right, and after the cutting blade group 103 closes, it moves slightly further to the right to coat the left end of the cutting wire 106. After stripping, the wire rod clamping claws 108, which are waiting at the transfer starting end in this state, clamp the cut wire rod 106.

Furthermore, during one-pitch circulation driving of the wire transfer device 107, the wire clamping claw 1 moves toward the soldering device 139.
Coating stripped end 1 of cut wire 106 that can be held by 08
06a passes through the injection flux area FA' of the flux coating device 135, and the flux F is applied to the end portion (FIG. 16).

When the wire rod clamping claw 108 stops at a predetermined position in front of the soldering device 139 (time T8 in FIG. 13),
The flux F-applied coating stripped end 106a of the cut wire 106 that can be held by the holding claws 108 is placed at the center of the melt flow area SA' of the soldering device 139,
It receives the flow of molten solder liquid S' (Fig. 17).

Almost simultaneously, the solenoid 202 is energized to stop the wire rod clamping pawl 108 at a predetermined position, and the gripping pawl 203 grips the cut wire 106 (see Fig. 13).
T81) Next, the lever 301 swings by the excitation of the solenoid 303 of the clamping claw temporary opening tool 300, and the roller 302 pushes the pushing claw 124 of the clamping claw 108 in the opening direction, thereby slightly opening the clamping claw 108. (Figure 13 Time T82, Figure 18). Subsequently, the air cylinder 201 performs a rod shortening operation, and the clamping claw 203 moves to the right and pulls the cut wire 106 to the right in the axial direction, removing the soldered coating stripped end 10.
6a from the melt flow area SA' (13th
Figure Time T83, Figure 19).

After that, the cut wire 106 is held by the wire clamping claws 10.
8 (Time T84 in Figure 13), while the wire gripping/pulling tool 200 opens the gripping claws 203 and returns to its original left position (Time T85→T86 in Figure 13, Figure 20).

In addition, in Figure 13, the aforementioned time T8→T86
It is sufficient that the process is completed by the start of the circulation drive of the wire transfer device 107 in the next cycle (time T7).

Furthermore, in the first and second embodiments described above, time T3→T5 and time T8→
The soldering period specified by T82 is set to the optimal time depending on the type of wire rod to be soldered.

Furthermore, in the second embodiment described above, instead of providing the wire gripping and pulling tool 200 and the clamping claw temporary opening tool 300, the entire soldering device 139 is moved perpendicularly to the transfer direction by an appropriate sliding means provided on the bottom surface of the base. It is positioned on the coated stripped end 106a of the cut wire, which can be moved to the right during the period when the circulation drive of the wire transfer device 107 is stopped, and the melt flow area SA' can be held by the wire holding claws 108. The robot may be allowed to stay there for a predetermined period of time and then retreat to the left.

As described in detail above, when using the machine of the present invention, a wire rod transfer device is provided that extends from the downstream side of the known wire stripper in a direction perpendicular to the wire feeding direction, and the wire rod transfer device is provided in the transfer path of the wire rod feeding direction. By installing flux coating equipment and soldering equipment,
Cutting the coated wire to a predetermined size and soldering the cut wire to the stripped end of the cut wire can be carried out automatically and continuously in a series of steps, and if the transfer device is oscillated, the soldering part It also performs accurate positioning and soldering by stripping off the coating and separating from the melt flow area, and when the transfer device is fixed, the simple structure of the wire gripping and pulling tool and the clamping claw temporary opening tool work together. By retracting the soldered end of the sheath from the molten liquid flow region in the axial direction, the end of the sheath that has been soldered can be soldered uniformly and beautifully without leaving any solder balls, as described above. Compared to the direct immersion method, the cost can be significantly reduced.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the conventional horizontal transfer method, Figure 2-
Fig. 20 shows an embodiment of the present invention, of which Fig. 2 is an overall perspective view of the first embodiment, Fig. 3 is an enlarged detailed view of Fig. 2 in the ~ arrow direction, and Figs. 4 and 5 are respectively Enlarged detailed view of and part of Figure 2, No. 6
The figure is an enlarged sectional view taken in the direction of the arrows in Fig. 2, Fig. 7 is an enlarged detailed view of a portion of Fig. 6, Fig. 8 is a partially modified enlarged view of Fig. 7, and Figs. 9 to 12 are the first embodiment. 13 is a time chart in the first embodiment and the second embodiment, FIG. 14 is an enlarged perspective view of the vicinity of the soldering device in the second embodiment, and FIG.
The figure is an enlarged cross-sectional view taken in the direction of arrows ~V in Figure 14.
6 to 20 are explanatory views of the operation in the second embodiment. In the figure, 1 is a wire stripper, 3 is a group of cutting blades, 4 is a drawer clamp, 5 is a coated wire, 6 is a cutting wire, 7 is a wire transfer device, 8 is a wire clamping claw, 3
5 is a flux coating device, and 39 is a soldering device.

Claims (1)

[Scope of Claims] 1. A wire cutting/stripping device, and a flux coating device disposed on the wire transfer path of a wire transfer device extending perpendicularly from the downstream side of the device in the wire feeding direction. , and a soldering device connected thereto, and the soldering device allows the molten solder to flow down from a flow port formed at the outlet of a molten solder guide pipe, which is supplied by a pump mechanism as appropriate. When the wire transferred by the wire transfer device reaches the lower part of the flow port, the stripped end of the wire is exposed to the melt flow region for a predetermined period of time, and then soldered to the wire. A covered wire soldering machine, characterized in that by moving one of the devices backward in the axial direction of the wire, the coating stripped end portion is relatively separated from the melt flow region. 2. The wire rod transfer device has a plurality of pairs of wire rod clamping claws mounted on the endless chain at equal intervals to perform intermittent circulation movement for one pitch at a downstream position in the wire rod supply direction, and after moving one pitch, the wire rod clamping claws are attached at equal intervals to the endless chain. The device performs a swinging motion toward the side using the transfer terminal end as a fulcrum, and returns to the original position after clamping the uncoated wire material at the upstream position, thereby stripping the coating on the destination side, as described above. 2. A covered wire soldering machine according to claim 1, wherein the stopping position of the clamping claws when they are moved by one pitch is an opposite position appropriately spaced from the melt flow region of the soldering device. 3. The wire rod transfer device has a plurality of sets of wire rod clamping claws mounted on the endless chain at equal intervals, and after clamping the wire rod from which the sheathing has been stripped, the wire rod transfer device drives the wire rod intermittently in circulation for one pitch.
Due to the pitch movement, the stripped end of the wire rod is stopped in the melt flow area of the soldering device, and the fixed part of the transfer device on the side opposite to the soldering device of the stopped clamping claw is held at the fixed part of the transfer device on the side opposite to the soldering device to grip and pull the wire rod below the axis of the stopped wire. means and clamping claw temporary opening means are provided, and the wire rod clamping claw is gripped by the gripping/pulling means and the wire rod clamping claw is released by the actuation of the clamping claw temporary opening means during the period when the intermittent circulation movement of the wire rod clamping claw is stopped. ,
A patent claim in which the wire is moved backward a predetermined distance in the direction of the wire axis opposite to the soldering device by the gripping/pulling means, and then the wire is held again by only the wire holding claws and then transferred to the end of the circulation transfer path. Covered wire soldering machine according to item 1. 4. The wire rod transfer device has a plurality of pairs of wire rod clamping claws mounted on the endless chain at equal intervals, and after clamping the wire rod from which the coating has been stripped, the wire rod transfer device drives the wire rod intermittently in circulation for one pitch.
The pitch movement causes the stripped end of the wire rod to stop in the molten liquid flow area of the soldering device, and the soldering device also stops the wire rod opposite to a predetermined position by an appropriate sliding means provided on the underside of the base. The wire rod transfer device is capable of reciprocating in the axial direction, and the wire rod transfer device is configured so that the wire rod coating stripping end part starts the next circular movement to separate from the melt flow area before the retracted soldering device returns to its original position. A covered wire soldering machine according to claim 1. 5. The wire rod clamping claws are composed of a pair of front and rear claw members, and between two supporting plates provided on both outer sides of the links of the endless chain, the fan-shaped gears formed at the bottom thereof are supported in a meshing state with each other, and are not normally operated. Any one of claims 2 to 4, wherein the claws formed on the upper part are closed together in an intersecting manner by a spring force, and the wire is held in such a way that the axis extends perpendicularly to the transfer direction.
Covered wire soldering machine as described in section. 6. The wire gripping and pulling means includes an air cylinder that expands and contracts in a direction perpendicular to the wire transport direction, a solenoid installed upright at the rod tip of the cylinder, and a solenoid installed at the upper end of the solenoid and opened and closed by the operation of the solenoid. 4. A covered wire soldering machine according to claim 3, comprising a set of two gripping claws. 7. The clamping pawl temporary opening means is configured such that the intermediate portion of an L-shaped lever having a roller at one end is pivotally mounted, and the L-shaped lever can be vertically swung by actuation of a solenoid linked to the other end of the lever. Claim 3, wherein the opening can be performed temporarily by engaging with an opening pushing claw provided on a wire rod clamping claw consisting of a pair of front and rear claw members that can reach a predetermined position as the roller rises. The covered wire soldering machine described.