JPH06102240B2 - Riveter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvement of a riveter, and more specifically,
The present invention relates to a riveter having a punching function of providing a plate material for fastening a blind rivet with an insertion hole for the rivet.

(Prior Art) Conventional riveters, including electric riveters, air riveters, and hand riveters, regardless of the complexity, simplicity, or difficulty of operation of the rivet, for example, in the case of electric riveters. Is constructed such that a rivet insertion hole is first opened in a plate material by an electric drill or the like, and then a rivet loaded in a rivet is inserted into the hole to perform a desired riveting operation.

(Problems to be Solved by the Invention) As described above, in the case of the conventional riveter, two operations using two types of tools such as a hole drilling operation on a plate material by a punching tool such as an electric drill and a riveting operation by the riveter are required. Therefore, there is a problem that the workability is poor and the riveting work cannot be performed efficiently. This problem is further increased when working in a high place where the scaffolding is poor, and the tool may drop when two types of tools are replaced. There is a risk of causing accidents, and there is a problem of inducing an unexpected accident.

The present invention was developed with the object of solving the above problems, and provides a riveter with the convenience of being able to continuously perform a piercing operation and a riveting operation on a plate material by a single riveter. To aim.

(Means for Solving the Problems) As means for solving the above problems and achieving the above objects, in the present invention, the distal end side is connected to a jaw mechanism, and a screw rod portion is provided on the rear side, and an intermediate portion is provided. A rotation shaft which is formed by penetrating a detent pin across the axial direction at a proper position and protruding both ends of the pin, a rolling nut screwed to the rear end side of the rotation shaft, the rolling nut and the rotation power. A clutch mechanism that engages and disengages the shaft, and an axial direction in which the rotation shaft is fitted and the projections at both ends of the rotation stop pin of the rotation shaft are inserted.
A cylindrical bearing frame formed by opposing long slots of a strip, and fitted to the bearing frame to be fixedly attached to the frame, and the tip side is fitted to a head frame incorporating a jaw mechanism. And a tubular main frame that is formed of a rivet and has a bottomed hole of a required depth provided on the tip side of the rotary power shaft so that the rotary shaft can be retracted and the clutch mechanism can be disengaged. Developed and adopted.

Further, in the present invention, in the riveter configured as described above, the clutch mechanism is configured by a clutch integrally formed on the tip surface of the rotary power shaft and a movable clutch provided on the rear surface of the rolling nut and movable back and forth. We have developed and adopted a riveter and a riveter in which the drive motor for the rotary power shaft is composed of forward and reverse rotation motors, respectively.

(Operation) In the riveter configured as described above, as shown in FIG. 1, when the jaw 17 of the jaw mechanism 3 is in an opened state, the blind rivet 39 having the drill blade 40 at the tip thereof is attached to the jaw. Insert in 17.

Next, lightly touch the mainframe 8 by hand (mainframe 8
Grip lightly so that the hand and the main frame 8 slip when a rotational force is applied to the motor, and momentarily turn on the switch of the motor in order to rotate the rotary power shaft 5 only a few revolutions. Then, the rotational torque of the motor is the rotational power shaft 5, the movable clutch 25, the connecting pin 14, and the rolling nut 2.
Is sequentially transmitted to and reaches the rotating shaft 1.

At this time, the rotation stop pin 11 is inserted in the rotary shaft 1, and the rotation stop pin is the long hole 27 of the bearing frame 7.
Is slidably fitted in the longitudinal direction, and the bearing frame 7 is integrally fixed to the main frame 8 by the set screw 32. Therefore, the rotary shaft 1 does not rotate,
Due to the screwing relationship with the rolling nut 2, it retreats straight. Then, the blind rivet 39 is moved to the jaw by retracting the jaw mechanism 3 provided at the tip of the rotary shaft 1.
It is bitten by 17 (Fig. 2). Blind rivet 39
When the jaw 17 is bitten, the resistance against the retreat of the rotary shaft 1 rapidly increases, and it becomes as if the bolt (rotary shaft 1) was tightened with the nut (rolling nut 2). 5, the clutch mechanism 6, the bearing frame 7, and the main frame 8 integrally fixed to the bearing frame 7 with the setscrew 2 are in an integrated state, and the entire riveter tries to rotate.

At this time, the main frame 8 is fixed by hand,
Since it is only lightly gripped, the fixed force is overcome and rotation continues, but the rotation of the motor stops shortly afterwards because the motor switch is momentarily turned on. Further, the worker who holds the main frame 8 by hand releases the gripping force at the moment when the rotational torque is transmitted to the main frame 8 and the hand feels resistance. The above operation completes the setting of the blind rivet on the riveter.

Next, letting go of the hand fixing the main frame 8 and freeing the riveter, the tip of the drill blade 40 of the blind rivet 39 held by the jaw 17 is attached to the required plate material 41.
When the rotary power shaft 5 is rotated in the forward direction by pressing the switch to turn on the motor, the plate material 41 is perforated by the drill blade 40, and at the same time, the blind rivet 39 is inserted into the hole. When the insertion is completed, switch off the motor once and wait for the rotation of the entire riveter to stop.

In this state, the main frame 8 is firmly fixed by hand so as not to rotate, and the motor switch is turned ON to rotate the rotary power shaft 5 in the forward direction. As shown in FIG. The rotary shaft 1 retracts through the rivet shaft, and the riveting operation is completed. At this time, even after the rivet shaft was broken, the hand continued to firmly fix the main frame 8 and the motor switch was also turned on, so the main shaft 1 continued to retreat, but the required amount retreated. Since the rotating torque is cut off by the clutch mechanism 6 which is sometimes operated, the hand is not burdened. Then, after the clutch mechanism 6 is activated, the motor switch is turned off and the rotation of the rotary power shaft 5 is stopped.

Next, looking at the main frame 8 from the nose piece 38 side,
Rotate counterclockwise by hand. Then, the rotational force is applied to the bearing H frame 7 integrally fixed with the main frame 8 and the set screw 2, and the rotation stopping pin 11 loosely fitted in the elongated hole 27 of the main frame in the longitudinal direction thereof. , Is transmitted in order to the rotating shaft 1 in which the detent pin 11 is inserted. Therefore, the rotary shaft 1 advances due to the screwing relationship with the rolling nut 2 and returns to the initial position shown in FIG. 1 to release the bite force of the cutting shaft of the blind rivet by the jaws 17 and force the gravity force. To discharge the cutting shaft. At this time, the clutch mechanism 6 is engaged when the rotary shaft 11 advances by a predetermined amount. In this way, the one-cycle operation of the riveting work is completed.

(Embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

The electric riveter according to this embodiment is roughly classified into a rotating shaft 1, a rolling nut 2, a jaw mechanism 3, and
It comprises a head frame 4, a rotary power shaft 5, a clutch mechanism 6 for releasably connecting the rolling nut 2 and the power shaft 5, a deformed cylindrical bearing frame 7, and a cylindrical main frame 8. ing.

Thus, the rotary shaft 1 has the jaw mechanism 3 on the tip side.
Bottomed hole (concave hole) 9 for accommodating a part of the jaw member of
In addition to the above, the screw rod 10 is provided on the rear side, and the rotation preventing pin 11 is provided in the substantially middle portion so as to be orthogonal to the axial direction, and both ends thereof are projected, and the push rod 12 is provided at the rear end. Is configured.

The rolling nut 2 is the screw rod portion 10 of the rotary shaft 1 described above.
A connecting pin that is screwed to the rear end portion of the nut, has a flange 13 provided at the rear end portion of the nut, and has a movable clutch of a clutch mechanism 6 described later attached to the flange 13 so as to be slightly retractable.
14 and a movable clutch pressing spring 15 are provided respectively.

The jaw mechanism 3 includes the well-known jaw members, that is, the jaw 17 housed in the jaw case 16, the jaw pusher 18,
The jaw pusher spring 19 comprises a jaw pusher 18 and a jaw pusher spring 19 therein, and the jaw case 16 is housed in the bottomed hole 9 of the rotary shaft 1, and the jaw case 16 is provided with a rotation stopper ring 20. It is fixed to the outer periphery of the tip portion of 1.

The head frame 4 is fitted on the tip end portions of the jaw mechanism 3 and the rotary shaft 1, and its rear end portion is fitted on the tip end portion of a bearing frame 7 described later.

The rotary power shaft 5 is provided with a bottomed hole (recessed hole) 21 having a required depth for allowing the rotary shaft 1 to retract, and in this embodiment, an O-ring 22 is provided at the bottom thereof. The push rod 12 of the rotary shaft 1 which fits the steel ball 23 and retracts to the steel ball 23 strikes the power shaft 5 to retract and disengages the clutch mechanism 6. The other clutch of the clutch mechanism 6 described below is integrally formed on the front surface of the flange 24 at the opening of the bottomed hole 21.

The clutch mechanism 6 is a rear end flange of the rolling nut 2.
A movable clutch mounted on the rear surface of 13 through a connecting pin 14 and a pressing spring 15 so as to be able to move slightly back and forth.
25 and the movable clutch 25 are disengaged. The power shaft 5 comprises a clutch 26 on the power shaft side integrally formed on the front surface of the flange 24 at the opening of the bottomed hole 21 in the power shaft 5. In this embodiment, a movable clutch provided on the peripheral area of the rear surface. In the plurality of concave portions 25a and the convex portions 25b of 25, the plurality of convex portions 26b and the concave portions 2 of the clutch 26 on the power shaft 5 side provided in the front peripheral region are provided.
It is composed of a meshing clutch mechanism of the type that engages and disengages 6a.

Next, the operation of the clutch mechanism 6 configured as described above will be explained in the section of the operation and will be partially duplicated. However, after the riveting work is finished, the main frame 8 is further fixed to the rotary power. If the shaft 5 continues to rotate forward,
The rotary shaft 1 is further retracted from the position shown in FIG.
The rear end hits the steel ball 23 fitted in the bottom part of the bottomed hole 21 of the rotary power shaft 5 to retract the power shaft 5, and as shown in FIGS. As shown in the drawing) The clutch 26 and the movable clutch 25 on the power shaft 5 side
A gap is formed between the concave portion 25a and the convex portion 25b of the movable clutch 25 and the convex portion 26b and the concave portion 26a of the clutch 26 on the power shaft 5 side, and the torque of the power shaft 5 is released. Is not transmitted to the movable clutch 25 side, the rolling nut 2 stops rotating, and the backward movement of the rotary shaft 1 stops. Next, when both the clutches 25 and 26 are in the position shown in FIG. 7, the power shaft 5 with the main frame 8 fixed thereto is rotated in the reverse direction, and the portions A of the two clutches 25 and 26 are engaged with each other to cause unevenness. When engaged, the rotation of the power shaft 5 is transmitted to the rolling nut 2, and the rotary shaft 1 is advanced leftward in the drawing to return to the initial position shown in FIG.

The bearing frame 7 is composed of a deformed cylindrical body formed by connecting a small-diameter frame portion 7a in the front half portion, a medium-diameter frame portion 7b in the middle portion, and a large-diameter frame portion 7c in the rear portion. Two elongated holes 27, 27 in the axial direction, which are vertically located in the direction of FIG. 1, are provided in a substantially middle portion of the frame portion 7a.
Then, the small-diameter frame portion 7a is fitted onto the rotary shaft 1 so that the rotation shaft 1 has a rotation-preventing pin in the long holes 27, 27.
Both protruding end portions 11a, 11a of 11 are fitted and the front end portion of the small-diameter frame portion 7a is fitted to the rear end portion of the head frame 4, and the rear end portion is covered with the small-diameter portion of the rolling nut 2. It is fitted. Further, the thrust bearing 28 and the rear end flange of the rolling nut 2 are provided inside the medium-diameter frame portion 7b.
The large-diameter frame portion 7c is provided with 13 and the clutch mechanism 6 and the like.
Inside, the front half of the power bearing 29, the race ring 30, the spacer 31, etc. are arranged.

The main frame 8 is composed of a cylindrical body having an outer diameter of the same length as the outer diameter of the large-diameter frame portion 7c of the bearing frame 7, and its rear end is formed with a medium-diameter frame portion 7b of the bearing frame 7. While abutting on the step portion with the large-diameter frame portion 7c, each member from the medium-diameter frame portion 7b of the bearing frame 7 to the latter half of the head frame 4 is fitted and
In this embodiment, the medium-diameter frame portion 7b of the bearing frame 7 is integrally fixed to the bearing frame 7 by the set screw 32 at the thick portion thereof, and the electric riveter is constructed in this manner. , FIGS. 1 to 3,
33 is a rear frame fitted in the latter half of the power bearing 29, 34 is its set screw, 35 is a needle bearing, 36 is the rear step of the small diameter frame portion 7a of the bearing frame 7 and the rotation stop pin 11
A rotating shaft spring mounted between and, 37 is a power bearing spring, 38 is a nose piece, 39 is a blind rivet integrally equipped with a drill blade 40 at the tip, 41 is a riveting plate material, and 42 is a power shaft. 5 are handles respectively provided with a forward / reverse rotation motor and a switch mechanism (not shown) in which 5 is detachably configured.

The electric riveter of the embodiment configured as described above operates by being operated as described in detail in the section of operation,
Since the desired drilling work and riveting work can be achieved by only a single electric riveting machine, the riveting work can be achieved extremely efficiently and economically.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and is applicable to, for example, an air riveter that uses an air motor, and in short, achieves the object of the present invention. It goes without saying that various design changes can be made without departing from the scope of the present invention.

(Effects of the Invention) The present invention relates to the above-described configuration and is used by operating as described above. Therefore, when performing blind riveting work, a drill tool is used first such as with various conventional rivets. There is no need to perform two types of work using two types of tools, such as performing riveting work using a riveting machine after perforating a riveting plate material, and accomplishing drilling work and riveting work continuously only with this riveting machine. Because it is possible, it is extremely economical and efficient, and it is also excellent in safety when working in high places.Furthermore, it uses the forward / reverse rotation motor of the existing electric drill etc. Since it is configured as an attachment type that can be attached and used, there are significant advantages that it can be provided at a lower cost.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a vertical sectional front view of the whole, FIG. 2 is a vertical sectional front view of a state in which a blind rivet is bitten, and FIG. 3 is a vertical sectional front view at the end of riveting work. FIGS. 4 (a) and (b) to FIG. 7 (a) and (b) are operation explanatory views of the clutch mechanism, and FIGS. 4 (a) and (b) to 6 (A) and (B) of the figure are a front view and a cross-sectional view of a main part showing the disengaged state of the engagement relationship of both clutches in the clutch mechanism, respectively, and (A) and (B) of FIG. FIG. 4A is a front view and a cross-sectional view of an essential part showing a state where both disengaged clutches of the clutch mechanism return to the engaged state. (Explanation of symbols) 1 ... Rotary shaft, 2 ... Rolling nut, 3 ... Jaw mechanism, 4 ... Head frame, 5 ... Rotating power shaft, 6 ... Clutch mechanism, 7 ... Bearing frame, 8 ... … Main frame, 9 …… bottomed hole, 10 …… screw, 11 …… stop pin, 12 …… push rod, 21 …… bottomed hole, 25 …… movable clutch, 26 …… on the power shaft side Clutch, 27 ... elongated hole.

Claims (3)

[Claims] 1. A front end side is connected to a jaw mechanism (3), a screw rod portion (10) is provided on the rear side, and a rotation stop pin (11) is provided at a proper position in an intermediate portion so as to cross the axial direction. A rotation shaft (1) formed by projecting both ends (11a) and (11a) of the rotation stop pin (11); a rolling nut (2) screwed to the rear end side of the rotation shaft (1); A clutch mechanism (6) for releasably connecting the rolling nut (2) and the rotary power shaft (5), and the rotation stop pin (1) fitted to the rotary shaft (1) to prevent the rotation shaft (1) from rotating. 11) A cylindrical bearing frame (7) formed by opposing projecting portions (11a) at both ends, two elongated holes (27), (27) along the axial direction into which the (11a) is inserted, and the bearing. It is fitted on the frame (7) and integrally fixed to the bearing frame (7), and the jaw mechanism (3) is internally provided. Head frame (4)
And a cylindrical main frame (8) whose front end is fitted to the front end of the rotary power shaft (5), and a bottomed hole (9) having a required depth is provided on the front end of the rotary power shaft (5) for rotation. A riveter characterized in that the shaft (1) can be retracted and the clutch mechanism (6) can be disengaged. 2. A rolling nut (2) and a clutch (26) integrally formed on the tip surface of a rotary power shaft (5).
The riveter according to claim (1), characterized in that a movable clutch (25) provided on the rear surface of the rear movable clutch (25) constitutes a clutch mechanism (6) which can be freely engaged and disengaged. 3. The drive motor for the rotary power shaft (5) is constituted by a forward / reverse rotary motor (1).
Riveter described in.