JPH08197160A - Calking machine - Google Patents

Abstract

PURPOSE: To surely achieve the calking even when a fitting flange is tilted by providing a calking arm, a holding tool to temporarily hold a corner piece to a head part, and a pressing arm to press the corner piece against each fitting flange prior to the machining action of the calking arm to connect the corner piece at the correct position. CONSTITUTION: A corner piece C which is temporarily held using a temporary holding tool 30 is correctly fitted to the inner side of each fitting flange F and a lip piece L by pressing a plate part and an inflated rib C3 close to an inner edge C1 using inner edge abutting parts 41a, 51a, and rib abutting parts 41b, 51b of pressing arms 10, 50 to be operated prior to the calking action of working frames 2, 3. When the fitting flange F is tilted, the clearance between the opposite surfaces of an outer edge C2 part of the corner piece C and the fitting flange F is eliminated to surely achieve the calking by the force to erect the fitting flange F at a head part to the right angle and the pressing force at the rib abutting parts 41b, 51b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caulking machine, and more particularly to a caulking machine having a corner and a mounting flange projecting outwardly from an open end which intersects with each other and a lip piece folded back at the end. The mounting flange is provided with an inner edge that fits inside the protruding base of the mounting flange, an outer edge that is locked by the pushing deformation of each lip piece, and a bulging rib that is provided on the plate portion between the inner and outer edges. The present invention relates to a crimping machine for crimping an L-shaped corner piece.

[0002]

2. Description of the Related Art Conventionally, at a corner portion of an air-conditioning duct, the corner piece is fitted inside each lip piece of each mounting flange, and the edge portion of each lip piece is caulked to attach each corner piece to each mounting flange. In the case of joining the corner pieces, the edge pieces of the lip pieces of the mounting flanges are hammered and swaged to join the corner pieces.

[0003]

However, in the prior art, since the staking is done by hammering and staking, the staking operation is complicated, and a large slamming noise is generated. After crimping the lip piece, the lip piece of the mounting flange on the other side is also crimped, so the corner piece was misaligned with respect to the proper joining position during this crimping, and it could not be joined at the proper position. Of.

Therefore, the present applicant previously provided a caulking actuating tool having a pair of reciprocating actuating arms, and actuating the actuating arms almost at the same time without generating a tapping sound. We have proposed a caulking machine that can perform the caulking work easily and that can join the corner pieces to the proper joining position without displacement. (Patent application 5-2
(87053) The object of the present invention is to further improve the caulking machine proposed previously, and to utilize the bulging ribs provided on the plate portion between the inner and outer edges of the corner piece to attach each corner piece. An object of the present invention is to provide a crimping machine that can be accurately fitted inside each lip piece in a flange, and that can be easily deformed by pushing each lip piece without shifting the corner piece.

[0005]

According to the first aspect of the present invention,
Workpiece W having projecting mounting flanges F, F having lip portions L, L folded back to the outside of open end edges having a corner portion W1 and crossing each other, and a projecting base portion of the mounting flanges F, F. The inner edges C1 and C1 fitted inward, the outer edges C2 and C2 locked by pushing deformation of the lip pieces L and L, and the bulging ribs C3 and C3 provided on the plate portion between the inner and outer edges. A crimping machine for crimping an L-shaped corner piece C, which is supported by a head portion 11 of a crimping actuating tool 1 so as to be swingable about axes intersecting with each other, and is attached to each lip piece L, L. A pair of actuating arms 2 and 3 that come into contact with each other to perform caulking, a temporary holder 30 that temporarily holds the corner piece C on the head portion 11, and a corner piece C that is temporarily held by the temporary holder 30. , 3 each of the mounting flanges F, F prior to the caulking operation Pressed pair of pressing arm 40,
50, and the pressing portions 41 and 51 of the pressing arms 40 and 50 are connected to the inner edge C1 of the corner piece C1.
Inner edge contact part 41 that contacts the plate part near C1
a, 51a and the bulging rib C3 on the corner piece C
The rib contact portions 41b and 51b contact C3.

Further, in the second aspect of the invention, the rib contact portions 41b and 51b are provided on the inclined surface having the inner edge contact portions 41a and 51a as the tops.

According to the third aspect of the present invention, the pressing portions 41 and 51 are detachably attached to the pressing arms 40 and 50.

Further, in the invention according to claim 4, between the pressing arms 40, 50 and the pressing portions 41, 51, the pressing portion 41,
Shims 25, 25 for adjusting the protruding height of 51 are removably interposed.

According to the fifth aspect of the present invention, the contact surfaces 21 and 21a, which are high in height and protrude forward with respect to the non-contact surface, are formed on the opposing surface of the head portion 11 which faces the mounting flanges F and F. is there.

The invention according to claim 6 is the head portion 1.
1 is provided with the recesses 22 and 22a for receiving the corners f and f of the mounting flanges F and F and avoiding interference with the corners when the caulking operation tool 1 is mounted on the work W.

Further, the invention according to claim 7 is the temporary holder 3
The positioning body 34 for setting the temporary holding position of the corner piece C is provided at 0.

According to the eighth aspect of the present invention, the positioning body 34 is constituted by the ridge 35 projecting into the corner C4 of the outer edges C2 and C2 of the corner piece C.

Further, in the invention according to claim 9, when the positioning body 34 receives the corner piece C with respect to the positioning body 34, the gap between the leg portions C5 and C5 and the head portion 11 in the corner piece C becomes Corner C4 in corner piece C
Thus, it also serves as a posture holding body that holds an inclined posture that widens with respect to the gap between the head portion 11 and the head portion 11.

Further, according to the invention of claim 10, the arm return lever 77 for double-moving the swing of the operating arms 2 and 3 in the caulking direction is rearward with respect to the pivot position of the operating arms (2) and (3). He pivoted in a position away from him.

[0015]

According to the first aspect of the invention, the corner piece C can be temporarily held by the temporary holding tool 30 of the caulking actuating tool 1, and the corner piece C that is temporarily held can be caulked by the actuating arms 2 and 3. The pressing arms 40 and 50 that operate prior to the operation
Inner edge abutting portions 41a and 51a, and rib abutting portion 41
Since the plate portions near the inner edges C1 and C1 and the bulging ribs C3 and C3 are pressed together by b and 51b, the corner piece C is attached to each lip piece L of each mounting flange F, F. It is possible to accurately fit the inside of L, and the lip pieces L, L can be easily pushed and deformed by the operation of the operating arms 2, 3 while maintaining the fitted state of the corner piece C. Therefore, the corner piece C can be joined to the proper joining position without displacement.

Further, the inner edge contact portions 41a, 51a of the pressing arms 40, 50 and the plate contact portions 41b, 51b near the inner edges C1, C1 and the bulging rib C are formed.
Since the mounting flanges F and F are pressed against the mounting flanges F and F together with the mounting flanges F and F, when the mounting flanges F and F are tilted without rising vertically, the lip pieces L by the operating arms 2 and 3 are formed. , L when pushing and deforming, the force to raise the mounting flanges F, F at a right angle in the head portion 11 of the caulking operation tool 1,
Due to the pressing force at the rib contact portions 41b and 51b, it is possible to eliminate the gap between the facing surfaces of the outer edges C2 and C2 of the corner piece C and the mounting flanges F and F. Even if the mounting flanges F, F are tilted, the corner pieces can be accurately caulked by the operation of the operating arms 2, 3 and the corner pieces can be firmly joined together without rattling. it can.

According to the second aspect of the invention, since the rib contact portions 41b and 51b are provided on the inclined surface having the inner edge contact portions 41a and 51a as the apex, the bulging rib C3 in the corner piece C is provided. , C3, even if there are a plurality of types of corner pieces having different positions between the inner and outer edges and the bulge height,
It is possible to effectively press both the plate portion near the inner edge of the corner piece and the bulging rib.

According to the third aspect of the present invention, since the pressing portions 41 and 51 are detachably attached to the pressing arms 40 and 50, the wall thickness of the mounting flanges F and F of the work W may be greatly different. Also, this mounting flange F, F
Can absorb the difference in wall thickness of the
It is possible to change to a pressing portion having a length adapted to the length of the leg portions C5, C5 in.

According to the fourth aspect of the invention, the shims 25, 50 are provided between the pressing arms 40, 50 and the pressing portions 41, 51.
Since the protrusion height of the pressing portions 41 and 51 can be adjusted by interposing 25 detachably, the pressing portion 4 can be used when the mounting flanges F and F of the work W have different wall thicknesses.
It is possible to absorb the difference in wall thickness between the mounting flanges F and F without exchanging 1,51.

Further, in the invention according to the fifth aspect, the high-level contact surfaces 21, 21a projecting forward with respect to the non-contact surface are formed on the opposed surface of the head portion 11 opposed to the mounting flanges F, F. , The contact surfaces 21 and 21a on both sides can be used as independent reference surfaces to process the pivot shaft holes and the like of each operation arm and each pressing arm, and therefore, the contact surfaces 21 and 21a.
Therefore, it is easy to process the dimension between the pivot shaft holes with high precision.

Further, in the sixth aspect of the present invention, when the caulking operation tool 1 is mounted on the work W in the head portion 11, the recess 22 for avoiding interference with the corners f, f of the mounting flanges F, F, Since 22a is provided, the caulking actuating tool 1 is easily mounted on the workpiece W while receiving the corners of the mounting flanges in the recesses 22 and 22a, even though the caulking actuating tool 1 temporarily holds the corner piece C. It is possible.

Further, the invention according to claim 7 is the temporary holder 3
Since the positioning body 34 for setting the temporary holding position of the corner piece C is provided at 0, the corner piece C can be easily held temporarily at an appropriate position.

According to the eighth aspect of the invention, the positioning body 34 has the outer edges C2 and C2 of the corner piece C.
Since the protrusions 35 project into the corners of the corners, the positioning piece 34 can be used to reliably hold the corner pieces C temporarily.

Further, in the invention according to claim 9, when the positioning body 34 receives the corner piece C to the positioning body 34, the gap between the leg portions C5 and C5 and the head portion 11 in the corner piece C becomes Corner C4 in the corner piece
Since it also serves as a posture holding body that holds an inclined posture that expands with respect to the gap between the head portion 11 and the head portion 11, the corner piece C can be positioned and held in the inclined posture at the same time without complicating the structure. Since the corner piece C is held in the inclined posture, the caulking operation tool 1 can be easily attached to the work W, and the caulking operation tool 1 can be easily attached to the work W.

According to the tenth aspect of the invention, the arm return lever 77 is pivotally mounted at a position away from the pivotal support position of the operating arms (2) and (3) rearward. The pivot point can be arranged at a position away from the pivot position of the actuating arm without being affected by the actuating arm or the like on the actuating tool body side, and the actuating arm can be double-acted with a small operating force.

[0026]

EXAMPLE As shown in FIG. 11, the embodiment shown in FIG. 10 is a mounting method in which lip pieces L, L are folded back to the outside of open end edges having corner portions W1 and intersecting with each other. Work W consisting of air-conditioning duct with flanges F and F protruding
The inner edges C1 and C1 fitted inside the projecting bases of the mounting flanges F and F, the outer edges C2 and C2 locked by pushing deformation of the lip pieces L and L, and the plate portions between the inner and outer edges. A substantially L-shaped corner piece C having bulging ribs C3, C3 is applied, and the lip pieces L, L provided at the ends of the mounting flanges F, F are bent inward, respectively.
The outer edges C2, C2 of the corner piece C are caulked inside the mounting flanges F, F.

In the caulking machine of the embodiment shown in FIG. 10, the caulking actuating tool 1 that supports the pair of left and right actuating arms 2 and 3 swingably, and the driving device that drives the actuating arms 2 and 3. 6, the operating arms 2 and 3 are connected to the driving member 60 of the driving device 6 via a pair of cords S1 and S2.

The caulking operation tool 1 has a head portion 1 on one side.
A substantially L-shaped actuating tool body 10 having a 1 and a handy portion 1
2 and a detachable cover 13 for covering the actuating device main body 10. A pair of bearing bodies 14, 14a are provided on the back surface of the head portion 11 as shown in FIGS. The arm shafts 15 and 15a are supported so that their axes intersect with each other substantially at right angles, and the operating arms 2 and 3 are swingably supported by the arm shafts 15 and 15a.

As shown in FIGS. 4 and 5, each of the operating arms 2 and 3 has a substantially C-shape, and the longitudinal middle portion thereof is supported by the arm shafts 15 and 15a. 2 are provided so as to make contact with the tips of the lip pieces L, L to be swung and to bend the lip pieces L, L inward to perform caulking processing, and the other end side as shown in FIG. The cords S1 and S2 are connected to the ends of the cords. The machined surfaces 2a and 3a are formed to have a wide width that protrudes to both sides in the width direction of each arm body, so that the pushing deformation width of the lip pieces L and L can be widened.

On the front surface of the head portion 11 of the actuator body 10, as shown in FIG. 1, the center of the inverted V-shape for engaging and positioning the inner surface of the corner portion W1 at the end of the workpiece W in the lengthwise direction. An operating tool for the work W is provided with a positioning protrusion 16, a pair of left and right positioning protrusions 17 and 17a for engaging and positioning the outer surfaces of the lip pieces L and L, and a pair of support legs 18 and 18a. A temporary holder 30 for temporarily holding the corner piece C via a pair of support legs 18 and 18a is provided so that the main body 10 can be positioned, and the bearing body 1 is provided at the upper end of the head portion 11.
A pair of bearing pieces 19,
19a is provided in a projecting manner, and pressing arms 40 and 50 are swingably supported on these bearing pieces 19 and 19a via shaft bodies 20 and 20a parallel to the arm shafts 15 and 15a. .

Further, on the front surface of the head portion 11 facing the mounting flanges F and F, high-level contact surfaces 21 and 21a projecting forward with respect to the non-contact surface are provided. , 21a are used as independent reference planes so that the operation arms 2, 3 and the pivot shaft holes of the pressing arms 40, 50 can be machined. Further, the front surface of the head portion 11 is a recess for receiving the corners f, f of the mounting flanges F, F when the caulking operation tool 1 is mounted on the work W, and avoiding interference with the corners f, f. 22 and 22a are provided.

The temporary holder 30 includes the support legs 18, 1
A holding plate 31 attached to the tip of 8a and a permanent magnet 32 attached to the inner surface of the holding plate 31 facing the front surface of the head portion 11.
And the corner piece C by the magnetic force of the permanent magnet 32.
Is sucked and held.

Further, the upper end of the holding plate 31 has the head 1
Bend toward 1, and bend this piece 33 into the corner piece C
The positioning body 34 for setting the temporary holding position is provided.
The positioning body 34 of the embodiment shown in FIGS. 1 and 3 is composed of a ridge 35 projecting inside the corner C4 of the outer edges C2, C2 of the corner piece C.

As shown in FIG. 3, the positioning body 34 is provided on the head portion 11 side with respect to the permanent magnet 32, and when the corner piece C is received by the positioning body 34, the leg portions C5 and C5 of the corner piece C are received. The gap between C5 and the head portion 11 is held in an inclined posture that widens with respect to the gap between the corner portion C4 of the corner piece C and the head portion 11. In this case, the corner piece C contacts the tip of the burring portion around the mounting hole C6 in the corner C4 and is inclined as shown in FIG. When the corner piece C is held in the inclined posture in this way, the stability of the corner piece C is improved by bringing the tip ends of the legs C5 and C5 of the corner piece C into contact with the pressing portions 41 and 51. Alternatively, the lower end portion of the holding plate 31 may be bent toward the head portion 11 as shown in FIG. The corner pieces C may be brought into contact with each other to improve the stability of the corner pieces C.

Further, one side of the supporting legs 18 and 18a is brought into contact with the outer edges C2 and C2 of the corner piece C held by the temporary holder 30 so as to assist the temporary holding position of the corner piece C. The contact parts 180 and 180a for setting are provided.

Further, the pressing arms 40, 50 are provided with the corner pieces C temporarily held by the temporary holder 30 as the actuating arms 2, 2.
3 is pressed against each of the mounting flanges F, F prior to the caulking operation of No. 3, and as shown in FIGS. 1 and 2, is parallel to each of the operating arms 2 and 3 on the outer side of each of the operating arms 2 and 3. The pressing arms 40 and 50 are operated in accordance with the operations of the operating arms 2 and 3. More specifically, the rollers 24, 24a rotatably held at the end portions of the working arms 2, 3 on the processing surfaces 2a, 3a side by roller shafts 23, 23a are brought into contact with the outer surfaces of the pressing arms 40, 50. The operation until the processed surfaces 2a, 3a of the respective operating arms 2, 3 come into contact with the lip pieces L, L is transmitted from the respective rollers 24, 24a to the pressing arms 40, 50, and the pressing arms 40, 50 are moved. In operation, the corner piece C held by the temporary holder 30 is pressed against the mounting flanges F, F,
By further operating the operating arms 2 and 3 while maintaining this pressed state, the lip surfaces L and L are caulked by the processing surfaces 2a and 3a. As shown in FIGS. 4 and 7, the upper surfaces of the pressing arms 40 and 50 are formed such that the tip end side of the pivot side base is formed into an arc surface along the movement locus of the rollers 24 and 24a, and the corner piece C After the pressing is completed, the pressing arms 40 and 50 are prevented from further swinging so that the pressing state can be maintained.

Then, the inner edge that abuts the pressing portions 41, 51 on the tip side of the pressing arms 40, 50 that press the corner piece C as described above near the inner edges C1, C1 of the corner piece C. Abutting portions 41a, 51
a and rib contact portions 41b and 51b that contact the bulging ribs C3 and C3 of the corner piece C, and contact and press these contact portions 41a, 51a and 41b and 51b together. I have to.

The rib contact portions 41b and 51b of the embodiment are provided on an inclined surface having the inner edge contact portions 41a and 51a as the tops. By doing so, even in the case of a plurality of types of corner pieces, the positions between the inner edges C1, C1 and the outer edges C2, C2 of the bulging ribs C3, C3 of the corner piece C and the bulging height are different. , The plate portion near the inner edges C1, C1 of the corner piece C, and the bulging rib C3.
Both C3 and C3 can be effectively pressed.

That is, the bulging ribs C3 and C3 in the existing corner piece C have different positions between the inner and outer edges for each of a plurality of manufacturers, and further, the bulging ribs closest to the inner edges C1 and C1 to the outer edge. As the bulging ribs closest to C2 and C2 are gradually bulged, the bulging height is sequentially increased. Therefore, the rib contact portions 41b and 51b are provided on the inclined surface having the inner edge contact portions 41a and 51a as the top. As a result, the plate portion near the inner edge of the corner piece C of each manufacturer and the bulging rib can be pressed together.

On the other hand, the pressing portions 41 and 51 may be integrated with the pressing arms 40 and 50, but they are separate bodies in the embodiment, and the mounting screws 42 and 52 are attached to the pressing arms 40 and 50.
It is detachably attached via. In this case, the tip ends of the pressing arms 40 and 50 are formed to have a wide width, the mounting holes 40a and 50a are provided at both ends in the width direction, and the pressing portion 4 is provided.
1, 51 are provided with a pair of screw holes 41c and 51c.

The pressing portions 41, 51 have a flat surface for attaching to the pressing arms 40, 50 and a thick wall for the edge contact portions 41a, 51a.
51a and the rib contact portions 41b, 51b are inclined so as to become thinner successively from the edges thereof, and the pressing portion 4
1, 51 are wider than the widths of the pressing arms 40 and 50 on the tip side, and the leg portions C5 and C of the corner piece C are provided.
The leg portions C5 and C5 are abutted over substantially the entire length of the leg portions C5 and C5.

On the other hand, the drive device 6 is formed separately from the caulking operation tool 1 as shown in FIG. 10, and the wheel 81 is provided at the bottom and the handle 82 is provided at the top as shown in FIG. An article such as a caulking actuating tool 1 or a cord-like body S1
A drive box 61 mainly composed of an electric motor, a hydraulic pump 62 driven by the drive box 61, and an electromagnetic opening / closing are provided in a portable moving box base 8 provided with a placing surface 83 on which S2 can be placed. A valve (not shown), an oil tank 63, and a hydraulic cylinder 64 having a piston rod 64a that constitutes the drive member 60 are internally configured.

The drive source 61 is constantly driven to drive the hydraulic pump 6
2 is constantly driven, the pressure oil discharged from the pump 62 is forcibly circulated between the oil tank 63 and the oil tank 63 via the switching valve, and the pressure oil is supplied to the hydraulic cylinder 64 by the switching operation of the switching valve. Alternatively, the piston rod 64a may be forced to be pushed out, but an operation operation switch 65A and a release switch 65B are provided, and the drive source 61 is driven by operating the operation switch 65A to drive the hydraulic pump 62. , The piston rod 64a is pushed out to operate the operation arms 2 and 3, the drive source 61 is stopped by the operation switch 65A being turned off, the operation of the hydraulic pump 62 is stopped, and the electromagnetic opening / closing valve is closed. The piston rod 64a is kept in the pushed state, and the release switch 65B is turned on to open the electromagnetic opening / closing valve. And so as to backward in the contracting direction of the piston rod 64a to discharge the pressurized oil supplied to the pressure cylinder 64.

Further, when the release switch 65B is turned off, the electromagnetic on-off valve is closed to prepare for the next operation of the operation arms 2 and 3.
The electromagnetic opening / closing valve 63 may be closed by interlocking with the ON operation of 5A.

The drive device 6 is preferably a hydraulic device using a hydraulic cylinder 64, but a mechanical drive device using a ball screw may be used.

Further, in the embodiment shown in FIG. 10, the hydraulic cylinder 64 is statically mounted on the mounting base 66 for fixing it to the moving box base 8, and the piston rod 64a is reciprocally moved. May be reciprocated.

Further, end plates 67, 67a are attached to the opposite ends of the hydraulic cylinder 64 and the piston rod 64a so as to face each other.

The cords S1 and S2 are mainly composed of a steel outer flexible tube and a flexible inner wire. One end of the outer tube is fixed to the hydraulic cylinder 64. The end plate 6 which is fixed and becomes a fixed end plate
7 through the outer bridge 68, and one end of the inner wire is movably locked through the wire fixture 69 to the end plate 67a that is fixed to the piston rod 64a and becomes the movable end plate. ing.

The outer cylinder and the inner wire of the pair of cords S1 and S2 are the hydraulic cylinder 64.
The end plate 6 in a symmetrical position.
A pair of return springs 70 for returning the end plate 67a, which is a movable end plate, are mounted between 7 and 67a at symmetrical positions orthogonal to the mounting positions of the outer cylinder and the inner wire. In addition, the return spring 70 is
The cylinder 64 may be mounted inside the cylinder 64 or may be mounted between the end plates 67 and 67a. By providing the end plates 67a on both sides in this way, the return speed of the end plate 67a, and thus the rocking return speed of the operating arms 2 and 3 in the caulking direction can be increased.

Therefore, when pressure oil is supplied to the hydraulic cylinder 64 in the above configuration, the piston slidably mounted in the cylinder 64 moves forward to move the piston rod 64a to the right in FIG. The inner wires in the pair of cords S1, S2 are pulled through the plate 67a, and the pair of operating arms 2, 3 provided in the caulking working tool 1 are simultaneously driven by this pulling operation.

In this case, the outer cylinder and the inner wire of each of the cords S1 and S2 are provided at symmetrical positions with the hydraulic cylinder 64 interposed therebetween, and the return spring 70 is also provided at the symmetrical position as described above. Since the piston and the piston rod 64a move without being twisted, the pulling operation of the inner wire and its operation amount (operating pressure) can be made uniform, and the operating arms 2, 3
It is possible to accurately drive the return springs 7 simultaneously.
The return operation by 0 can be performed smoothly.

Further, the cords S1 and S2 are set to have a predetermined length which enables good crimping work, and the cords S1 and S2 are
The other end side of the inner wire in
3 is connected to each end of the outer cylinder by a connecting pin 72 via a connecting body 71, and the other end side of the outer cylinder is locked to the opposite head side end part of the actuating device main body 10 via the outer support 73. Therefore, return springs 74 and 74a for urging the operating arms 2 and 3 to the non-operating positions are interposed between the operating arms 2 and 3 and the head portion 11.

On the other hand, in the crimping operation tool 1, when crimping by gripping the handy portion 12, the handy portion 1
The push button type operation switch 65A and the release switch 65B are provided on both sides of the front of the handy portion 12 so that the drive source 61 can be turned on and off while the user holds 2 and the electric circuit of the drive source 61 is provided. A lead wire (not shown) drawn out from the working tool body 10 and the cover 13 are arranged along the cords S1 and S2 from the end of the working tool body 10 opposite to the head portion.
And is connected to each of the switches 65A and 65B.

Further, the cover 13 is such that the rear side is lower than the front side, the handy portion 12 is provided on the rear side, and the lever receiving body 75 is provided inside the intermediate step portion. An arm return lever 77 for forcibly returning the swinging of the operating arms 2, 3 in the caulking direction is pivotally mounted via a pivot shaft 76.

As shown in FIG. 3, the arm return lever 70 has an elongated one end side with respect to the middle bent portion in the lengthwise direction and an operating portion 77a at the end portion, and the other end side with an end portion. It has a short and generally L-shape having an operating portion 77b at its portion, and the pivot shaft 76 is provided between the operating portion 77b and the bent portion.
And fix the operating portion 77a to the switches 65A and 6A.
5B is projected upward from between 5B and the operating portion 77b.
To the outer surface of the cross portion of the operating arm 2 by operating the operating portion 77a on the outer surface of the cross portion of the operating arm 2 by the fall operation of the operating portion 77a, that is, the clockwise operation in FIG. By pressing, the swing of the operating arms 2 and 3 in the caulking direction can be forcibly returned. still,
The actuating portion 77b presses only one actuating arm 2 and, for example, the distal end side of the actuating arm 3 with respect to the crossing portion of the actuating arm 2 and the actuating arm 3 is actuated by the actuating arm 77b.
It is also possible to bulge to a position almost at the same height as the pressing surface of, and both the outer surface of this bulging portion and the outer surface of the operating arm 2 near the cross portion are pressed almost at the same time.

Further, in FIG. 3, reference numeral 78 denotes a return spring provided between the arm return lever 77 and the handy portion 12. The action of this spring 78 keeps the lever 77 away from the operating arms 2 and 3 at all times. Direction, that is, the position indicated by the solid line in FIG. The lever 77 is pivotally attached to the cover 13, and, for example, a pair of brackets are provided on the rear surface of the upper portion of the head portion 11 so as to project, and these brackets are extended to positions near the pivot shaft 76 in FIG. The lever 77 may be pivotally mounted between the brackets.

Further, the cover 13 has the switches 6
The recessed portion 13a for accommodating the 5A and 65B is provided, the switches 65A and 65B are arranged in the recessed portion 13a, and the switch cover 79 having a dish-shaped cross section for guarding the switches 65A and 65B is attached to the recessed portion 13a. 1
Even if you accidentally drop the switch and hit an external item, each switch 65
It prevents A and 65B from malfunctioning and prevents damage.

Next, the operation when the corner piece C is caulked to the work W by the caulking machine configured as described above will be described.

Prior to the caulking process, first, the corner piece C
Is set on the temporary holder 30 of the caulking operation tool 1. As shown in FIG. 3, this set includes the corner C4 of the corner piece C.
After applying the outer edges C2, C2 at the contact portions 180, 180a of the support legs 18, 18a to auxiliary setting the temporary holding position, the inside of the corners of the outer edges C2, C2 at the corner piece C is set. The corner piece C temporarily held by the temporary holder 30 is in an inclined posture as shown in FIG. 3, that is, the leg portion of the corner piece C is held by the projection 35 of the positioning body. The gap between C5 and C5 and the head portion 11 is held in an inclined posture in which the gap between the corner portion C4 and the head portion 11 of the corner portion piece C is widened. While being held, the handy portion 12 of the crimping operation tool 1 is grasped to engage the central positioning projection 16 with the inside of the corner W1 of the work W, and the mounting flanges F, F are provided with the left and right positioning projections 17, 17a. And engaged, it is to mount the crimping operation device 1 to the predetermined position.

At the time of this mounting, the recess 2 provided in the head portion 11
2, 22a can receive the corners f, f of the mounting flanges F, F, so that the caulking actuator 1 has a corner piece C.
Despite the temporary holding, the caulking operation tool 1 can be easily attached to the mounting flanges F, F.

Next, with the handy portion 12 held, the operation actuating switch 65A is pushed to drive the drive source 61. This drive supplies pressure oil to the hydraulic cylinder 64, and the piston rod 64a and the end. The plate 67a operates, the inner wires of the cords S1 and S2 are pulled, and the operating arms 2 and 3 are simultaneously driven to start swinging.

With the swinging of the operating arms 2 and 3, the rollers 24 and 24a move the pressing arms 40 and 50 in FIG.
As indicated by the chain line, the driving force is driven toward the inside of the mounting flanges F and F. By this pressing drive, the corner piece C is pressed to the inside of the mounting flanges F and F, and inside the mounting flanges F and F. , The inside of the lip pieces L, L, and is set on the work W. At this time, the temporary holder 30
The corner piece C temporarily held in the inclined posture is released from the temporary holding and is pressed against the mounting flanges F and F, but this pressing can be performed at once by the operation of the pressing arms 40 and 50. The corner piece C can be pressed without falling off.

Then, as the oscillating movement of the operating arms 2 and 3 progresses, the machined surfaces 2a and 3a of the operating arms 2 and 3 come into contact with the tips of the lip pieces L and L of the mounting flange F, and the respective lip pieces L and 3 L is tightened at the same time, and caulking is stopped by this tightening.

Further, the corner piece C has a contact portion 41a,
Since the plate portions near the inner edges C1 and C1 and the bulging ribs C3 and C3 are pressed together at 51a and 41b and 51b, the mounting flanges F and F stand up at right angles to the work body as shown in FIG. If you are leaning without
Before the lip pieces L, L are pushed and deformed by the operation arms 2, 3, the mounting flange F,
The force for raising F at a right angle and the rib contact portions 41b, 51b
With the pressing force at 1, the gap between the facing surfaces of the outer edges C2, C2 of the corner piece C and the mounting flanges F, F can be eliminated as shown in FIG. Therefore, by pressing the pressing portions 41 and 51, the corner piece C can be securely fitted inward from the tip side winding tightening margin of the lip pieces L and L as shown in FIG. The corner piece C can be accurately caulked by the operation, and rattling of the corner piece C can be eliminated.

As described above, the corner piece C is temporarily held,
Since the corner pieces C are pressed by the pressing arms 40 and 50 and then caulked by the operating arms 2 and 3, it is not necessary to set the corner pieces C on the mounting flanges F and F in advance. When it is necessary to tap with a hammer etc., the troublesome work can be omitted and the problem of damage to the work at the time of tapping can be avoided, so the workability can be markedly improved and even unskilled workers can easily swage. It can be stopped.

After the caulking is completed as described above, the operation arm switch 2A is turned off, the release switch 65B is turned on, and the piston rod 64a of the hydraulic cylinder 64 is returned to operate the arm 2. ，
3 is returned by the action of the return springs 74, 74a, and by this return, it can be easily removed from the mounting flanges F, F.

When the corner pieces C on one corner side have been caulked, the caulking operation tool 1 is moved to the next caulking portion without moving the work W, whereby The caulking at the caulking portions can be performed by the procedure, and even if there are a plurality of caulking portions, the caulking work can be easily performed at the caulking portions.

Further, after the completion of the caulking, if the operating arms 2 and 3 do not return due to the action of the return springs 74 and 74a, they are forcibly returned by operating the arm return lever 77. .

Further, the mounting flange F on the work W,
The wall thickness of F has a difference (for example, 0.5 to 1.2 mm) depending on the manufacturer of the work W, the size of the work, and the like. Therefore, the pressing portions 41 and 5 of the pressing arms 40 and 50 are different.
1 and the contact surface 2 in the head portion 11 of the caulking actuator 1
In the case where the distance between the lips 1 and 21a is constant, the pushing deformation positions of the lip pieces L and L by the operating arms 2 and 3 change, and it is not possible to deal with the difference described above. However, the shim 25 as shown in FIG. By using the adjusting plate 26, or by using the shim 25 and the adjusting plate 26 together, the gap can be adjusted, the difference in wall thickness can be absorbed, and the lip pieces L, L of the operating arms 2, 3 can be adjusted. The caulking can be properly performed.

When the shim 25 is used, for example, the shim 25 is provided with a pair of through holes corresponding to the mounting holes 40a and 50a, and is detachably mounted to the pressing arms 40 and 50 by the mounting screws 42 and 52. Of. Also,
When the adjusting plate 26 is used, in the embodiment of FIG. 13, an inverted V-shaped main body 26a having a pair of plate-shaped portions facing the contact surfaces 21, 21a of the head portion 11 and the main body 26 are provided.
It is formed by attaching pieces 26b, 26b which are bent from both ends of a and are detachably attached to both ends of the actuating tool main body 10 with attaching screws. Further, the position where the main body 26a faces the recesses 22 and 22a is notched. Incidentally, the shim 25 is formed thinner than the adjusting plate 26, and when the thickness difference is small, one or a plurality of shims 25 are used.
When it is difficult to deal with this shim 25, it is dealt with by the adjusting plate 26.

In addition, by using the movable box base 8 in the above-mentioned embodiment and providing the mounting surface 83 on the upper surface of the box base 8 and the handles 82 on the four sides,
Not only it becomes a handle during movement, but also lifting operation can be performed easily, and since the handle 82 can surround the above-mentioned placing surface 83, the caulking operation tool 1 and the cord-like body S1 can be attached to the above-mentioned placing surface 83. , S2, they can be stably placed without dropping.

The embodiment described above is intended for the case where the corner piece C is caulked to the mounting flanges F, F of the work W mainly composed of the air conditioning duct, and the operation arms 2, 3 are operated as a pair. Although the arms 2 and 3 are configured to be driven simultaneously, the work to be caulked is not limited to the air conditioning duct. Further, the attachment flanges F of the work W, the lip pieces L of the F,
As shown in FIGS. 4 and 11, the L is provided with folding pieces L1 and L1 at its tip end, and the folding pieces L1 and L1 are provided as indicated by the chain line in FIG.
Although the L1 portion is pushed and deformed, the folding pieces L1 and L1 may be omitted.

[0073]

According to the invention described in claim 1, the corner piece C can be temporarily held in the temporary holder 30 of the caulking operation tool 1,
Moreover, the temporarily-held corner piece C has inner edge abutting portions 41a and 51a of the pressing arms 40 and 50 and rib abutting portions 41b and 51b that operate prior to the caulking operation of the operating arms 2 and 3. Since the plate portion near the inner edges C1 and C1 and the bulging ribs C3 and C3 are pressed together by and, the corner piece C is placed inside each lip piece L, L of each mounting flange F, F. The corner pieces C can be fitted accurately, and the lip pieces L, L can be moved by the operation of the operating arms 2, 3 while maintaining the fitted state of the corner piece C.
Since it can be easily deformed by pushing, the corner piece C can be joined to an appropriate joining position without displacement.

Furthermore, the inner edge abutting portions 41a and 51a of the pressing arms 40 and 50 and the plate abutting portions of the rib abutting portions 41b and 51b near the inner edges C1 and C1 and the bulging rib C.
Since both C3 and C3 are pressed against the mounting flanges F and F, even when the mounting flanges F and F are tilted without standing up at a right angle, the corner pieces are operated by the operation arms 2 and 3. Can be caulked accurately, and the corner pieces can be firmly joined together without rattling.

According to the second aspect of the invention, since the rib contact portions 41b and 51b are provided on the inclined surface having the inner edge contact portions 41a and 51a as the apex, the corner piece C is formed.
Even if there are plural kinds of corner pieces in which the positions between the inner and outer edges of the bulging ribs C3 and C3 and the bulging height are different, the plate portion near the inner edge of the corner piece and the bulging rib are Can be effectively pressed together.

According to the third aspect of the present invention, since the pressing portions 41 and 51 are detachably attached to the pressing arms 40 and 50, the thicknesses of the attachment flanges F and F in the work W are significantly different. Even if there is, the difference in wall thickness between the mounting flanges F, F can be absorbed, and further, the pressing portion can be changed to a length adapted to the length of the leg portions C5, C5 in the corner piece C. Of.

According to the fourth aspect of the invention, the shim 2 is provided between the pressing arms 40 and 50 and the pressing portions 41 and 51.
Since the protrusion heights of the pressing portions 41 and 51 can be adjusted by interposing the mounting portions 5 and 25 in a detachable manner, when the thicknesses of the mounting flanges F and F in the work W are different, the pressing portions 41 and 51 can be adjusted. It is possible to absorb the difference in wall thickness between the mounting flanges F and F without exchanging.

Further, according to the fifth aspect of the present invention, the contact surfaces 21 and 21 of the higher position, which project forward with respect to the non-contact surface, are provided on the facing surfaces of the head portion 11 facing the mounting flanges F and F.
Since a is formed, it is possible to machine the pivot shaft holes and the like of each operating arm and each pressing arm by using the contact surfaces 21, 21a on both sides as independent reference surfaces.
It is easy to process the dimension between 1a and the pivot shaft hole with high precision.

Further, according to the invention described in claim 6, when mounting the caulking operation tool 1 on the work W in the head portion 11, a recess for avoiding interference with the corners f of the mounting flanges F, F. Since 22 and 22a are provided, the recesses 22 and 2 are formed even though the crimping actuating tool 1 temporarily holds the corner piece C.
The caulking operation tool 1 can be easily attached to the work W while receiving the corner portion of the mounting flange in 2a.

Further, according to the invention of claim 7, the temporary holder 30 is provided with the positioning body 34 for setting the temporary holding position of the corner piece C, so that the corner piece C can be easily placed at an appropriate position. It can be held temporarily.

Further, according to the invention described in claim 8, the positioning body 34 has the outer edge C2 of the corner piece C2.
Since the protrusions 35 project into the corners of C2, the positioning body 34 can be used to reliably hold the corner pieces C temporarily.

According to the invention as set forth in claim 9, when the positioning body 34 receives the corner piece C to the positioning body 34, the legs C5 and C5 of the corner piece C are received.
Since the gap between the head portion 11 and the head portion 11 also serves as a posture holding body that holds an inclined posture that widens with respect to the gap between the corner portion C4 of the corner piece and the head portion 11, the corner can be formed without complicating the structure. At the same time as positioning the piece C, it can be held in an inclined posture, and the corner piece C
Is held in an inclined posture, the work W of the caulking actuator 1
It is possible to improve the mounting property to the work W, and it is possible to easily mount the crimping operation tool 1 on the work W.

According to the tenth aspect of the invention, the arm return lever 77 is pivotally mounted at a position away from the pivot position of the operating arms (2) and (3) rearward.
The pivot point of the arm return lever 77 can be arranged at a position away from the pivot position of the actuating arm without being influenced by the actuating arm or the like on the actuating tool body side, and the actuating arm can be double-acted with a small operating force. You can do that.

[Brief description of drawings]

FIG. 1 is a front view of a crimping operation tool showing an embodiment of a crimping machine of the present invention.

FIG. 2 is a partially cutaway rear view of the head portion of the caulking actuating device, in which one portion of the cover body is notched and crimped.

FIG. 3 is a cross-sectional view of the AA line of FIG. 2 with each arm omitted.

FIG. 4 is an explanatory view showing a working state of a pressing arm due to swinging of the working arm, which is taken along a line BB in FIG.

FIG. 5 is a perspective view of a crimping operation tool.

FIG. 6 is a front view showing a relationship between a pressing arm and a corner piece.

FIG. 7 is a side view showing the relationship between the pressing arm and the corner piece.

FIG. 8 is a perspective view of a part showing an example of a work to be caulked in the embodiment of FIG.

FIG. 9 is an explanatory diagram of a case where a corner piece is caulked to a work whose mounting flange is tilted.

FIG. 10 is an overall perspective view showing an embodiment of a caulking machine of the present invention.

FIG. 11 is a perspective view showing an example of a work to be caulked and a corner portion piece.

FIG. 12 is a partial cross-sectional view showing an example in which a shim is attached.

FIG. 13 is a partial cross-sectional view showing an example in which an adjusting plate is attached.

FIG. 14 is a perspective view showing an example of an adjustment plate.

FIG. 15 is a perspective view showing a state in which a caulking actuating tool is housed in a moving box base having a drive device incorporated therein.

[Explanation of symbols]

1 Caulking actuator 2, 3
Working arm 2a, 3a Processing surface 11
Head part 12 Handy part 13
Covers 21,21a Abutting surfaces 22,22
a recess 25 shim 30
Temporary holder 34 Positioning body 35
Ridge 40,50 pressing arm 41,51
Pressing parts 41a, 51a Inner edge abutting parts 41b, 51
b Rib contact part 77 Arm return lever

Claims (10)

[Claims] 1. A mounting flange (F) (F) having a corner portion (W1) and a lip flange (L) (L) folded back at the end is provided on the outer side of an open edge that intersects with each other. Inner edges (C1) and (C1) fitted to the inside of the protruding base of the mounting flanges (F) and (F) on the work (W), and each lip piece (L)
Outer edge (C2) (C2) locked by pushing deformation of (L)
And a bulging rib (C
3) A substantially L-shaped corner piece (C) having (C3)
A caulking machine for caulking, which is swingably supported by a head portion (11) of a caulking actuating tool (1) about an axis intersecting with each other, and is attached to each lip piece (L) (L). A pair of operating arms (2) (3) that contact and crimp
A temporary holder (30) for temporarily holding the corner piece (C) on the head portion (11), and a corner piece (C) temporarily held by the temporary holder (30) for the operating arms (2) (3). ) Is provided with a pair of pressing arms (40) (50) for pressing the mounting flanges (F) (F) prior to the crimping operation, and pressing portions (41) of the pressing arms (40) (50). (5
1) to the inner edge (C1) of the corner piece (C)
(C1) Inner edge contact portions (41a) (51a) that contact the plate portion near (C1) and rib contact portions (41) that contact the bulging ribs (C3) (C3) of the corner piece (C).
b) A caulking machine characterized by being formed by (51b). 2. The rib contact portions (41b) (51) on the inclined surface having the inner edge contact portions (41a) (51a) as the apex.
The crimping machine according to claim 1, wherein b) is provided. 3. The crimping machine according to claim 1, wherein the pressing arms (40) (50) are detachably attached with pressing parts (41) (51). 4. Shims (25) (25) for adjusting the protruding height of the pressing parts (41) (51) are provided between the pressing arms (40) (50) and the pressing parts (41) (51). The crimping machine according to claim 3, wherein the caulking machine is detachably interposed. 5. A high-level contact surface (21) (21a) protruding forward with respect to the non-contact surface is formed on the opposed surface of the head portion (11) opposed to the mounting flanges (F) (F). The caulking machine according to any one of claims 1 to 4. 6. The head portion (11) receives the corner portions (f) and (f) of the mounting flanges (F) and (F) when the caulking operation tool (1) is mounted on the work (W). The caulking machine according to any one of claims 1 to 5, which is provided with recesses (22) (22a) for avoiding interference with the caulking machine. 7. The crimping machine according to claim 1, wherein the temporary holder (30) is provided with a positioning body (34) for setting a temporary holding position of the corner piece (C). 8. The positioning body (34) has a corner portion (C) of the outer edge (C2) (C2) of the corner piece (C).
Crimping machine according to claim 7, characterized in that it comprises a ridge (35) plunging into 4). 9. The positioning body (34), when receiving the corner piece (C) to the positioning body (34), the legs (C5) (C5) and the head portion (11) of the corner piece (C). 9. The caulking according to claim 7 or 8, wherein the gap between and also serves as a posture holding body which holds an inclined posture in which the gap widens with respect to the gap between the corner portion (C4) of the corner piece (C) and the head portion (11). Machine. 10. An arm return lever (77) for double-moving the swing of the operating arms (2) (3) in the swaging direction.
The caulking machine according to any one of claims 1 to 9, wherein the swivel mechanism is pivotally mounted at a position away from the pivot position of the actuating arms (2) (3) rearward.