JPS6365424B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention provides a metal conductor butt brazing machine for supplying brazing material to a metal conductor butt brazing machine that butts and brazes the ends of both metal conductors. The present invention relates to a brazing material supply device for a brazing machine.

(Prior Art) Since the operation of a conventional metal conductor butt brazing machine requires a very complicated procedure, the applicant first developed a metal conductor butt brazing machine as described below that simplifies this procedure. proposed (patent application 1982-208595)
issue).

This metal conductor butt brazing machine has two
A pair of clamp tools 1 and 2 are provided. Each clamp 1, 2 includes a lower clamp arm 3, 4, which is made of a good conductive metal and has an L-shape, and an upper clamp arm 5, 6 which is substantially linear. , 6 is a bracket 7 protruding from the upper clamp arms 5 and 6 in the middle thereof (the bracket on the upper clamp arm 6 side is not shown).
and a pivot pin 8 (the pivot pin on the lower clamp arm 4 side is not shown) that passes through the lower clamp arms 3 and 4 and passes through the bracket 7. The conductor holding parts 3A, 4A, 5A, 6A at the tips of the lower clamp arms 3, 4 and the upper clamp arms 5, 6 are provided with insulating materials 9, 10 on the protruding end faces facing each other between the adjacent clamp tools 1, 2. , 11, and 12 are respectively attached to prevent them from being shot. A large-diameter conductor insertion groove 1 is provided on the clamping surface of the conductor clamping parts 3A and 4A.
3, 14 and the small diameter conductor insertion groove 15 (conductor holding part 4A
The small-diameter conductor insertion grooves (not shown) are provided so as to be aligned between the clamp tools 1 and 2. At the outer ends of these grooves 13, 14, 15, tapered grooves 16, 17, 18 for conductor insertion (the tapered structure for conductor insertion on the conductor holding part 4A side is not shown) are provided to facilitate the insertion of the metal conductor. formed continuously. On the end face of the upper clamp arms 5, 6 on the side where these tapered grooves 16, 17, 18 exist, a tapered surface 19 is provided to facilitate insertion of the metal conductor.
20 is formed. These large diameter conductor insertion grooves 1
In order to ensure alignment of the metal conductors, centering pins 21 made of a slippery insulating material such as tetrafluoroethylene are slid onto both conductor clamping parts 3A and 4A having small-diameter conductor insertion grooves 15 and 3, 14. It is inserted freely. Between each lower clamp arm 3, 4 and upper clamp arm 5, 6 on the opposite side from the conductor clamping parts 3A, 4A with the pivot pin 8 in between,
U-shaped clamp auxiliary springs 22 (clamp auxiliary springs on the arms 4 and 6 are not shown) are interposed to bias each upper clamp arm 5 and 6 in the clamping direction. These clamp auxiliary springs 22 include both conductor holding parts 3A, 5A,
4A and 6A are selected to have a spring force that can temporarily clamp the metal conductor with a weak force.

At the rear of the lower clamp arms 3, 4 and the upper clamp arms 5, 6 on the side of the clamp auxiliary springs 22, clamp springs 23, 24 made of coiled compression springs are interposed, respectively, to support the upper clamp arms 5, 6. It is designed to be biased in the direction of the clamp. At the rear of each clamp tool 1, 2, there are spring operating pins 25, 26 for operating the clamping force of each clamp spring 23, 24 between a complete clamp state and a temporary clamp state, respectively, and a spring receiver 27 at each tip. , 28 respectively receive one end of each clamp spring 23, 24, and the proximal end side thereof is slidably inserted into each lower clamp arm 3, 4, respectively. Each clamp spring 23, 2
The other end of 4 is a spring receiver 31 at the tip of the adjustment screw 29, 30 screwed into the upper clamp arm 5, 6.
(The spring receiver on the adjustment screw 30 side is not shown). Each spring operation pin 2 is provided in each cam accommodation hole 32, 33 on the opposing surface of each lower clamp arm 3, 4.
Both ends of the compound cam mechanism 34 control the clamping force and move the movable clamping tool 1 toward the fixed clamping tool 2 to apply abutting force to both metal conductors through the terminals 5 and 26, respectively. Fitted and supported. The compound cam mechanism 34 has a cylindrical movable cam body 35 whose both ends are rotatably fitted into the cam housing holes 32 and 33, and a fixed side facing the end face of the movable cam body 35. clamp tool 2
It consists of a fixed cam body 36 fixed in a cam housing hole 33, and an operating lever 37 for rotating the movable cam body 35 about its axis. The movable cam body 35 consists of movable cam bodies 39 and 40 that are integrated with an insulating plate 38 in between so as to insulate the two lower clamp arms 3 and 4. On the outer periphery of the movable cam bodies 39, 40,
When facing the base ends of the spring operation pins 25 and 26,
Clamping force control cam groove 4 that lowers this
1 and 42 are provided, respectively. A ball 25A (pin 2
The balls on the 6 side (not shown) are rotatably supported and are designed to slide easily on the outer periphery of the movable cam bodies 39, 40. Opposite end surfaces of the movable cam body 35 and the fixed cam body 36 are arranged so that when the movable cam body 35 is rotated to a required angle by operating the operating lever 37, the movable side clamping tool 1 is moved in the direction of the fixed side clamping tool 2. Cam surfaces 43 and 44 are provided, respectively. Cam surface 43 of movable cam body 35
consists of a convex surface portion 43A, a concave surface portion 43B, and a tapered surface portion 43C. The cam surface 44 of the fixed cam body 36 has a convex surface portion 44A, a concave surface portion 44B,
It consists of a tapered surface portion 44C. A cam shaft 45 projects from the center of the cam surface 43 of the movable cam body 35, and an operating lever 37 is screwed onto the tip of the cam shaft 45 in a perpendicular direction. Fixed cam body 36
At the center is a through hole 46 through which the camshaft 45 passes.
is open. A cam biasing spring 47 that biases the cam surface 43 of the movable cam body 35 to constantly contact the cam surface 44 of the fixed cam body 36 is fitted onto the outer periphery of the cam shaft 45 protruding from the lower clamp arm 4. ing. The operating lever 37 has this lever 3.
A switch operation section 37A is provided for operating a switch (not shown) that starts energization for brazing when the wire 7 is rotated to a required angle. At the base ends of both lower clamp arms 3, 4, power supply terminals 48, 49 are attached for supplying electricity to the metal conductor to be brazed via these arms.

Lower clamp arm 3 of movable clamp tool 1
is fixed to an insulating stand 51 with a bolt 52 via a spring means 50 made of a leaf spring so that the butt pressure force of the metal conductor acts. In addition, 5
3 and 54 connect the spring means 50 to the lower clamp arm 3.
and the bolts fixed to the insulating stand 51. The lower clamp arm 4 of the clamping tool 2 on the fixed side is fixed to an insulating stand 51 with bolts 55.

A clamp tool movement stroke adjustment mechanism 56 is provided on the side surface of the movable lower clamp arm 3 for adjusting the movement range of the movable clamp tool 1 according to the diameter size of the metal conductor. This clamping tool movement stroke adjustment mechanism 56 includes a screw hole 57 formed on the side surface of the lower clamp arm 3 so as to communicate with the cam housing hole 32, and a screw hole 58A screwed into the screw hole 57. Cylinder 58
, an adjustment screw 59 which is screwed into the female threaded hole 58B of this threaded cylinder 58 and whose tip is in contact with the axial end surface of the movable cam body 35; and a screw hole drilled in a direction perpendicular to the threaded cylinder 58. 58C, and a lock nut 61 that locks the adjustment screw 59. Stoppers 62 and 63 that limit the movement range of the adjustment lever 60 are protruded from the side surface of the lower clamp arm 3.

Next, a brazing operation using such a brazing machine will be explained with reference to FIGS. 1 to 9 and 10. When the operating lever 37 is turned clockwise in FIG. 2, when each cam groove 41, 42 of the movable cam body 35 faces each spring operating pin 25, 26, the balls 25A, etc. at the base ends of these pins 25, 26 are turned. falls into the respective cam grooves 41 and 42, and the rotation of the movable cam body 35 is stopped. In such a state, the clamp spring 2
3, 24 is removed, the clamping springs 23, 24 are stretched, and the clamping force is reduced;
Only the clamping force is generated by the clamp auxiliary spring 22. In this state, the tapered grooves 16, 17 or 18 for conductor insertion of both clamp tools 1 and 2 and the tapered surfaces 19,
Metal conductors 64, 65 to be brazed between
When pushed in, since the clamping force of the clamp auxiliary spring 22 is weak, the insertion force of the metal conductors 64 and 65 pushes open the conductor holding parts 3A and 5A and between 4A and 6A, and the metal conductors 64 and 65 are inserted into the conductor insertion groove. 13,
14 or 15 and protrude to the opposite side. The protrusion dimension can also be adjusted using the metal conductor 6.
4 and 65 are only lightly clamped temporarily so that they can be inserted and removed with one hand, so this can be easily done. The tips of the metal conductors 64 and 65 inserted from both sides are made to face each other, and a silver brazing material 66 is interposed between them. At this time, the alignment pin 21 is used to prevent the axes of the metal conductors 64 and 65 from being misaligned. When the matching operation is completed, turn the operating lever 37 counterclockwise in FIG. 2. As a result, the movable cam body 35 is also rotated in the same direction, and in the process, each spring operation pin 25, 26 is pushed out from each cam groove 41, 42 and rides on the outer periphery of the movable cam body 39, 40. , 26 compresses the clamping springs 23, 24, increasing the clamping force, and the metal conductors 64, 65 are finally clamped. When the operating lever 37 is further turned counterclockwise in FIG. 2 even after the main clamping state is reached, the convex surface portion 43A of the cam surface 43 of the movable cam body 35 changes to the concave surface of the cam surface 44 of the fixed cam body 36. The movable cam body 35 is fitted into the portion 44B and moves to the right in FIG. The spacing becomes narrower, and the metal conductors 64 and 65 are strongly pressed against the silver brazing material 66.
From this state, when the operating lever 37 is further turned counterclockwise in FIG. A current flows through the metal conductors 64 and 65 through the metal conductors 3 and 4, and the silver brazing material 66 is melted to connect the metal conductors 64 and 65 by brazing. metal conductor 6
4 and 65 is cut off after a predetermined time by a timer (not shown).

After brazing is completed, move the operating lever 37 to the second position.
Turn clockwise as shown. Then, the convex surface 43A of the cam surface 43 of the movable cam body 35 rides on the convex surface 44A of the cam surface 44 of the fixed cam body 36, and the movable cam body 35 and the movable clamp 1 are separated from the fixed clamp 2. The clamping tools 1 and 2 move away from each other, the gap between them widens, and then the spring operating pin 2
5 and 26 fall into the cam grooves 41 and 42, and both clamping tools 1 and 2 become temporarily clamped. When this state is reached, both the brazed metal conductors 64, 6
5 from both clamp tools 1 and 2. Note that when the distance between both clamping tools 1 and 2 is widened, since each clamping tool 1 and 2 is in the main clamp state, a force is applied to both metal conductors 64 and 65 in the direction of separating them, but the main clamping force is approximately 3.5 Kg, and if the brazed part is perfect, it will not break if pulled with this amount of force, so both clamp tools 1,
2 will slide open on each metal conductor 64,65. Therefore, at this time, an inspection was conducted to determine whether the brazed portion was complete.

The distance between both clamp tools 1 and 2 can be adjusted by a clamp tool movement stroke adjustment mechanism 56. That is, when the adjustment lever 60 is turned until it hits the stopper 63, the threaded cylinder 58 is screwed in together with the adjustment screw 59, and the tip of the adjustment screw 59 pushes the movable cam body 35, thereby adjusting the distance between the clamps 1 and 2. spread. When the adjustment lever 60 is turned in the opposite direction until it hits the stopper 62, the threaded cylinder 58 moves back together with the adjustment screw 59, and the distance between the clamps 1 and 2 becomes narrower. When the metal conductors 64 and 65 are thick, the distance between the clamps 1 and 2 is widened, and when the metal conductors are thin, the gap is narrowed.

In this kind of metal conductor butt brazing machine,
Although it is necessary to supply the silver brazing material 66 between the opposing ends of both metal conductors 64 and 65 in the required size,
Conventionally, no suitable brazing filler metal supply device has been proposed.

(Object of the Invention) An object of the present invention is a metal conductor butt brazing machine that can easily supply a brazing material between two metal conductors to be butt-brazed and cut the brazing material during brazing. The present invention provides a brazing filler metal supply device for use.

(Structure of the Invention) According to the present invention, two sets of clamping tools parallel to each other that individually grip both metal conductors to be butt-brazed are connected to each metal conductor by a difference in rotation angle of a movable cam body of a composite cam mechanism. The metal conductor butt brazing machine is adapted to undergo an operation of temporarily clamping the metal conductor, an operation of permanently clamping the metal conductor, and an operation of bringing the clamp tools close to each other to apply pressure to the abutting portions of the metal conductors. In a brazing material supply device for a metal conductor butt brazing machine that supplies brazing material between the tips of the two metal conductors clamped by a clamping tool, a brazing material supplying device for a metal conductor butt brazing machine supplies a brazing material between the tips of the two metal conductors between the two clamping tools. A brazing material feeding mechanism for feeding out the brazing material is disposed, the brazing material feeding mechanism is supported by a frame, and the frame is disposed between the clamping tools along the longitudinal direction thereof and acts on both sides of the longitudinal direction. The frame is swingably supported by both clamps so that the moment of force based on gravity is unbalanced, and the frame is provided with a cam follower that controls the attitude of the brazing material feeding mechanism via the frame. The movable cam body has an outer circumferential surface supporting the cam follower and both clamping tools so that the brazing material feeding mechanism maintains a normal brazing material feed attitude when the clamping tools are in a temporary clamp state. The present invention is characterized in that a cam groove for controlling brazing material melting is provided so that the cam follower is not supported when in the main clamp state.

(Example) Examples of the present invention will be described in detail below with reference to FIGS. 11 to 17A and 17B. As shown in the figure, the brazing material supplying device 67 of this embodiment has a thick plate shape, and has both clamping tools 1 and 2 with the plate surface oriented vertically.
It has a metal frame 68 disposed between them. Insulating plates 69 and 70 are provided on both sides of the frame 68.
is installed, and the lower clamp arms 3, 4
electrically insulated against. The frame 68 is provided with a recess 71 in the center of its upper surface, and in the frame front rising part 68A and frame rear rising part 68B with this recess 71 in between, brazing material guide holes 72 and 73 made of round holes are provided at the front and back. The openings are arranged in the horizontal direction, and the tape-shaped silver brazing material 66 is guided toward the tip side. Frame front rising portion 68A and frame rear rising portion 68B
, a pair of brazing material posture maintenance screws 74 and 75 are inserted into the brazing material guide holes 72 and 73 from both sides, respectively.
are screwed in, and the facing screws 74, 74
The plate surface of the silver brazing filler material 66 is supported from both sides between 75 and 75. At the tip of the frame 68, a brazing material guide nose 76 is attached to the frame 68.
It is made thinner and protrudes, and the rising part 7 at the tip
6A is provided with a brazing material guide slit 77 aligned with the brazing material guide hole 72.

Mounted on the recess 71 of the frame 68 is a brazing material feeding mechanism 78 that feeds the silver brazing material 66 between the tips of the metal conductors 64 and 65 described above. The brazing material feeding mechanism 78 has a brazing material feeding knob 80 that is rotatably provided on a frame 68 by a knob shaft 79 on the side of the passage for the silver brazing material 66 . That is, this brazing material feeding knob 80 has a hole 80A drilled in its axial center, and by passing the knob shaft 78 through this hole 80A and screwing the tip of the knob shaft 78 to the frame 68, the knob 80 is rotated by the frame 68. freely supported. A rubber brazing material feed roller 81 is fitted onto the outer periphery of the lower end of the brazing material feeding knob 80 so that it can rotate together with the brazing material feeding knob 80. A brazing material pressing leaf spring 82 for pressing the silver brazing material 66 against the brazing material feeding roller 81 is disposed on the opposite side of the brazing material feeding roller 81 with the silver brazing material 66 in between. This brazing material retaining plate spring 82 is provided with a loop portion 82A at one end, and is supported so as to be able to rotate around the pin 83 by planting a pin 83 passed through the loop portion 82A on the frame 68. has been done. The brazing material pressing plate spring 82 is biased in a direction in which it is pressed against the circumferential surface of the brazing material feed roller 81 by a biasing pin 84 provided upright on the frame 68 .

Brazing material feeding mechanism 78 and frame front rising portion 6
A brazing material guide member 85 is fixedly mounted on the frame 68 between the brazing member 8A and the frame 68 with screws 86. This brazing material guide member 85 is formed with a tapered brazing material guide groove 87 that opens toward the brazing material feed roller 81 side.

A brake mechanism 88 that applies a brake to the silver brazing material 66 is built into the frame front rising portion 68A. The brake mechanism 88 includes a vertical hole 89 formed in the frame 68 vertically across the brazing material guide hole 72, and a brazing material pin 90 is inserted into the vertical hole 89 so as to be vertically movable. A brazing material passage hole 91 is formed in the lower part of this pin 90 so as to be aligned with the brazing material guide hole 72.
A stopper groove 92 is formed on the upper outer periphery. A spring 93 is housed in the vertical hole 89 under the brazing material holding pin 90 and presses the pin 9.
0 is biased upward.
In order to prevent the brazing material holding pin 90 from popping out due to the push-up of the spring 93, a stopper screw 9 is installed horizontally in the front rising portion 68A of the frame.
4 is screwed in, and its tip is the brazing material holding pin 9
It is engaged in the stopper groove 92 of No. 0.

A pivot hole 95 is formed at the rear of the frame 68 so that the moment of force based on gravity acting on both sides of the frame 68 in the length direction becomes larger on the distal end side and becomes unbalanced. pivot screw 96
is inserted, and the pivot screw 96 is screwed onto the lower clamp arm 4 on the fixed side, so that the brazing filler metal supply device 67 is supported by the lower clamp arm 4 so as to be able to swing freely around the pivot screw 96. There is.

On the rear lower surface of the frame 68, the frame 68
A crank-shaped cam follower 98 that controls the attitude of the brazing material feeding mechanism 78 is attached via an insulating material 97. Rear end 98 of cam follower 98
A is made to face in the radial direction of the insulating plate 38 in the movable cam body 35 of the metal conductor butt brazing machine, and is in contact with the outer periphery of the insulating plate 38.
The cam follower 98 is supported by the outer periphery of the insulating board 38 in this way when both the clamps 1 and 2 are in the temporary clamp state. At this time, the brazing material feeding mechanism 78 is supported by the insulating plate 38 via the frame 68 and the cam follower 98 so that the brazing material feeding mechanism 78 maintains the normal feeding posture of the brazing material. Further, on the outer periphery of the insulating plate 38 of the movable cam body 35, when the movable cam body 35 rotates to a certain angle, the convex surface portion 43A of the cam surface 43 of the movable cam body 35 fits into the concave surface portion 44B of the cam surface 44 of the fixed cam body 36. A cam groove 99 for controlling brazing material melting is provided so that the cam follower 98 is not supported when both clamping tools 1 and 2 are in the main clamp state. A brazing material guide 100 is provided upright on the cam follower 98, and a brazing material guide groove 100A is formed at its upper end.

Such a brazing material supply device 67 is used to feed the rear end portion 98 of the cam follower 98 at the stage of setting the metal conductors 64 and 65 to the metal conductor butt brazing machine.
A rides on the outer periphery of the movable cam body 35, and with the support of the movable cam body 35, the frame 68 and the like are supported horizontally via the cam follower 98, as shown in FIG. In this state, when the brazing material feed knob 80 is turned clockwise as shown in FIG. 11, the silver brazing material 66 is pressed by the plate spring 82 to the outer periphery of the rubber brazing material feeding roller 81 at the lower end. Therefore, the silver brazing material 66 is delivered to the distal end side of the device 67. At this time, the silver brazing material 66 passes through the brazing material passage hole 91 of the brazing material holding pin 90, and since a pushing force is applied to the brazing material holding pin 90 by a spring 93, an appropriate brake is applied to the silver brazing material 66. A force acts, and the silver brazing material 66 suppresses unnecessary movement due to inertia or the like.

In this state, the operating lever 37 is turned clockwise in FIG. end ball 25
A falls into each cam groove 41, 42, and as mentioned above, both clamp tools 1, 2 are in a temporary clamp state, so between conductor clamping parts 3A, 5A, 4A, 6
Metal conductors 64 and 65 are inserted between A and protrude to the opposite side, so that the tips of these metal conductors 64 and 65 are in contact with both sides of the silver brazing material 66 that is already present.

Next, when the operating lever 37 is turned counterclockwise in FIG. 2, the spring operating pins 25 and 26 are pushed out of the respective cam grooves 41 and 42 as described above, and are placed on the outer periphery of the movable cam bodies 39 and 40. When the spring operation pins 25 and 26 rise, the clamp springs 23 and 24 are compressed, and both clamp tools 1 and 24 are compressed.
2 enters the main clamp state, then the movable cam body 3
The convex surface portion 43A of the cam surface 43 of No. 5 is the fixed cam body 36.
The movable cam body 35 is fitted into the concave surface portion 44B of the cam surface 44 and moves to the right in FIG.
, the distance between both clamping tools 1 and 2 becomes narrower, and each metal conductor 64 and 65 is connected to the silver brazing material 66.
is strongly pressed against.

In this way, both metal conductors 64 and 65 are connected to the silver brazing material 6
6 is strongly clamped, the cam groove 99 for brazing material melting control of the movable cam body 35 faces the rear end portion 98A of the cam follower 98. However, in this state, the silver brazing material 66 is sandwiched between the two metal conductors 64 and 65, and the brazing material supplying device 67
Since the rear end portion 98A of the cam follower 98 loses support from the movable cam body 35, it does not fall into the cam groove 99 and remains suspended in the air. has been done.

From this state, when the operating lever 37 is further turned counterclockwise in FIG.
4 and 65 are energized, the silver brazing material 66 is melted, and both metal conductors 64 and 65 are brazed together. At this time, when the silver brazing material 66 is melted, its mechanical strength is weakened. Brazing material supply device 67
The silver filler metal 66 is unable to resist the moment of force based on gravity acting on the tip side of both metal conductors 6.
It is fused at a position near 4.65. This results in
The brazing material feeding device 67 is rotated clockwise in FIG. 12 by its own weight around the pivot screw 96, and the rear end portion 98A of the cam follower 98 falls into the cam groove 99.

As described above, the power supply to both metal conductors 64 and 65 is cut off after a predetermined time by a timer (not shown).

When the operation lever 37 is turned clockwise in FIG. 2 after brazing is completed, the cam surface 43 of the movable cam body 35
The convex surface 43A rides on the convex surface 44A of the cam surface 44 of the fixed cam body 36, and the movable clamp 1 moves away from the fixed clamp 2 together with the movable cam body 35, and then the spring operation pin 25 ,2
6 falls into the cam grooves 41 and 42, and both clamp tools 1 and 2 are in a temporary clamp state.

Note that the movable cam body that controls the cam follower 98 is not limited to the above-mentioned example, and for example, another movable cam body that is interlocked with the movable cam body 35 may be used.

(Effects of the Invention) As explained above, the brazing material supply device for a metal conductor butt brazing machine according to the present invention can supply a brazing material between two metal conductors to be butt brazed;
Positioning can be performed so that the brazing material feeding mechanism maintains a normal brazing material feeding posture. In particular, positioning can be performed automatically by operating the movable cam body in conjunction with the operation of the brazing machine, which is very convenient in terms of handling. Furthermore, in the device of the present invention, the moment of the force based on the weight acting on both sides of the frame is unbalanced, and in addition, the cam follower melts the brazing material of the movable cam body in the main clamp state of both clamping tools. This device faces the control cam groove so that it is not supported by the movable cam body, and since this device also serves as a self-weight actuated brazing material fusing device, the brazing material can also be melted by this device. It can be done automatically and quickly using the , and the appropriate amount of brazing can be done. Furthermore, even if this device doubles as a weight-operated type brazing material fusing device, the cam follower is supported by the movable cam body when supplying the brazing material, so that the brazing material feeding mechanism maintains the normal feeding posture of the brazing material. Therefore, the brazing filler metal can be supplied normally without any hindrance.

[Brief explanation of drawings]

Fig. 1 is a front view showing an example of a metal conductor butt brazing machine, Fig. 2 is a left side view of Fig. 1, Fig. 3 is a plan view of Fig. 1, and Fig. 4 is a front view showing an example of a metal conductor butt brazing machine. A partial side view of the movable cam body used, FIG.
The right side view of the figure, Figure 6 is a front view of the fixed cam body used in this brazing machine, Figure 7 is a right side view of Figure 6, and Figure 8 is the screw used in this brazing machine. 9 is a right side view of FIG. 8, FIG. 10 is a partial front view showing an example of the butt state of both metal conductors before brazing, FIG.
2 and 13 are a plan view, a side view and a front view of one embodiment of the brazing material supply device according to the present invention, and FIG.
Figures A and B are a plan view and a side view of the brazing material feed knob used in the device of this embodiment, and Figures 15A and B are a plan view and a side view of the knob shaft for supporting the brazing material feed knob. , FIGS. 16A and 16B are a side view and a plan view of the leaf spring used in the device of this embodiment,
FIG. 17 is a front view and a plan view of a brazing material holding pin used in the apparatus of this embodiment. 1, 2...Clamp tool, 3, 4...Lower clamp arm, 5, 6...Upper clamp arm, 3A, 4
A, 5A, 6A...Conductor holding part, 7...Bracket,
8... Pivot pin, 9, 10, 11, 12... Insulating material,
13, 14, 15... Conductor insertion groove, 22... Clamp auxiliary spring, 23, 24... Clamp spring, 25, 2
6... Spring operation pin, 32, 33... Cam accommodation hole, 3
4...Compound cam mechanism, 35...Movable cam body, 36...Fixed cam body, 37...Operation lever, 37A...Switch operation section, 38...Insulation board, 39, 40...Movable cam body, 41, 42...Cam groove, 43 , 44...cam surface,
45...Cam shaft, 47...Cam biasing spring, 48, 49
...Power supply terminal, 50...Spring means, 51...Insulation stand, 5
6...clamp tool movement stroke adjustment mechanism, 64,
65... Metal conductor, 66... Brazing material, 67... Brazing material supply device, 68... Frame, 69, 70... Insulating plate,
72, 73...brazing material guide hole, 76...brazing material guide nose, 78...brazing material feeding mechanism, 79...knob shaft, 80...brazing material feeding knob, 81...brazing material feeding roller, 82...brazing material pressing plate spring, 84...Biasing pin, 88...Brake mechanism, 95...Pivot hole, 96...
Pivot screw, 98...Cam follower, 99...Cam groove for brazing metal melting control.

Claims (1)

[Claims] 1 Two sets of clamping tools parallel to each other that individually grip both metal conductors to be butt-brazed temporarily clamp each metal conductor and main clamp due to the difference in rotation angle of the movable cam body of the composite cam mechanism. The metal conductor butt brazing machine is configured to perform an operation of applying pressure to the butt portions of the metal conductors by bringing the clamps closer to each other and applying pressure to the abutting portions of the metal conductors. In a brazing material supply device for a metal conductor butt brazing machine that supplies a brazing material between the tips of both metal conductors, a brazing material feeding device is provided between the two clamps to feed the brazing material between the tips of the two metal conductors. a mechanism is disposed, the brazing material feeding mechanism being supported by a frame, the frame being disposed along the longitudinal direction between the clamping tools to eliminate the moment of gravity-based forces acting on both sides of the longitudinal direction; The frame is provided with a cam follower that is swingably supported by both the clamps so as to be in equilibrium, and that controls the attitude of the brazing material feed mechanism via the frame, and the outer periphery of the movable cam body is an outer circumferential surface that supports the cam follower so that the brazing material feed mechanism maintains a normal brazing material feed posture when both clamping tools are in the temporary clamping state; A brazing material supply device for a metal conductor butt brazing machine, characterized in that it is provided with a cam groove for controlling melting of the brazing material so as not to support the driven body.