JP3349161B2 - Riveting tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an automatic rivet implantation actual tool.

[0002]

BACKGROUND OF THE INVENTION One of the main reasons why riveted assemblies are rejected is that the rivets are not properly set. This occurs when the operator is quickly withdrawing the rivet driving tool from the contact surface and driving a rivet to improve throughput.

[0003] It is therefore an object of the present invention to ensure that the rivet flange and the part to be assembled come into contact at a given pressure before upsetting the rivet.

[0004] Other objects and advantages of the present invention will become apparent from the accompanying drawings and the accompanying specification in accordance with the following preferred embodiments.

[0005]

In order to achieve the above object, a rivet driving tool according to the present invention includes a rivet driving pulling head including a holding means for holding a rivet, and a driving operation for driving a rivet held by the pulling head. Operating means for supporting the workpiece in a selected position; a remote position;
The rivet held by the head is supported by the support means.
Between the rivet position to fit the held workpiece
So that it can be manually moved in a balanced state.
Means for attaching a betting drive pulling head;
And prevention means Tsu preparative implantation pulling head to prevent actuation of said operating means except when in the rivet position, after actuation of said operating means, time determined in advance, the rivet hammering
Seen pulling head is prevented from being moved to a position far away from the rivet position, with a movement preventing means for ensuring that the rivet is driven correctly. Here, for example, the hydraulic / pneumatic pressure intensifier 22 shown in FIG. 1 corresponds to the operating means for driving the rivet held by the pulling head. In addition, the rivet driving and pulling
The rivet held by the
Manually with the balance position
Attach the rivet driving and pulling head
As means, for example, the double-acting cylinder 30 of FIG.
Handle bracket 111, support bracket 12, and guide
The combination with the rod 14 corresponds. A combination of the first pneumatic solenoid valve 26 and the controller 44 shown in FIG. Also, as a movement preventing means for preventing the pulling head from moving away from the rivet position to a position far from the rivet position for a predetermined time after the operation of the operating means, and ensuring that the rivet is correctly driven. For example, the combination of the second solenoid valve 36 and the third solenoid valve 52 in FIG. Further, the present invention is the rivet driving tool, wherein the preventing means for preventing operation of the operating means detects that the rivet driving and pulling head having a rivet is in contact with a workpiece .
Including means for determining . Here, as a means for detecting and determining this, for example, the proximity switches 40, 40, and 40 shown in FIG.
The combination with 50 and the controller 44 corresponds. Further, the present invention is the rivet driving tool, wherein the preventing means for preventing the operation of the operating means further includes handle means, and supporting means for supporting the handle means, wherein the supporting means includes while the head is displaced, the holding means for holding the handle means in a predetermined position relative to said rivet driving pulling head, when said rivet driving pulling head is pressed against the workpiece to hold the rivet, the riveting pulling head And a switch means operable by the handle when the handle means is displaced a predetermined distance relative to the rivet driving and pulling head. Here, as the handle means, for example, the handle bracket 11 and the handle 46 in FIG.
And the combination corresponds. The support means for supporting the handle means includes, for example, a support bracket 1 shown in FIG.
2 corresponds. Further, as the switch means, for example,
The proximity switch 50 in FIG. 1 corresponds. A spring 48 in FIG. 1 corresponds to, for example, a supporting means and an allowance means for supporting the handle. The handle 46 is pressed against the spring 48 by the operator when the tension head reaches the rivet driving position. When the handle 46 is pressed down against the spring 48 until a signal is sent from the proximity switch 50 to the controller, the controller controls the tension head such that the tip 18 of the tension head presses the rivet flange 58 against the workpiece 20. . Further, the present invention provides the rivet-driving tool, the displacement prevention means is a pneumatic cylinder, a pneumatic cylinder actuating means for actuating the spatial pressure cylinder, the pneumatic cylinders actuating except when the cited tension head is in the rivet positions And means for preventing operation of the means. Here, as the pneumatic cylinder, for example, the double-acting cylinder 30 in FIG. 1 corresponds. The operating means corresponds to, for example, a combination of the solenoid valves 36 and 52 and the controller 44 in FIG. Means for preventing the operation of the pneumatic cylinder operating means except when the pulling head is at the rivet position include, for example, FIG.
The controller 44 in FIG. Another rivet driving tool according to the present invention includes a rivet driving pulling head including holding means for holding a rivet, a means for supporting a workpiece at a selected position, a remote position,
The rivet held by the rivet driving pulling head is
Between the rivet position to fit the supported workpiece
So that it can be manually moved in a balanced state.
It includes means for attaching a betting driving pulling head and pressing means for pressing the rivet driving and pulling head holding the rivet against the workpiece while driving the rivet. Here, a double-acting cylinder 30 in FIG. 1 corresponds to, for example, a pressing means for pressing the rivet setting / pulling head holding the rivet against the workpiece while setting the rivet. Also,
The present invention is the another rivet driving tool, wherein the pressing means includes means for detecting and determining that a rivet driving pulling head having rivets is hitting the workpiece. Here, as means for detecting and determining , for example, the proximity switches 40, 40, 50 and FIG.
And the controller 44 . Further, the present invention is the another rivet driving tool, wherein the pressing means further includes handle means, and support means for supporting the handle means, wherein the support means is provided while the rivet driving pulling head is displaced. holding means for holding a handle means at a predetermined <br/> position with respect to the riveting pulling head, when said rivet driving pulling head is pressed against the workpiece to hold the rivet, said to said rivet driving pulling head An allowance means for allowing movement of the handle, and switch means operable by the handle when the handle is displaced a predetermined distance with respect to the rivet driving and pulling head. Here, as the switch means,
For example, the proximity switch 50 in FIG. 1 corresponds. Also,
Yet another rivet driving tool according to the present invention is a rivet driving tool for driving a rivet into a workpiece, the rivet driving tension head including a holding means for holding a rivet , and a rivet driving tension head. A driving means for driving the rivet to be held, a handle means which can be gripped by hand, and a supporting means for supporting the handle means, the supporting means being capable of driving the rivet driving tension while the rivet driving tension head is displaced. holding the handle in position relative to the head, the holding-the riveting pulling head holding a rivet to allow the when pressing the workpiece, the movement of the handle to the riveting pulling head
The rivet driving tool further includes a switch means operable by the handle means when the handle has been displaced a predetermined distance relative to the rivet driving pulling head, the switch means being operable by the handle means . Means for the handle
After the means has moved relative to the pulling head, the control
Controller, the controller controls the solenoid
And the air pressure is stored in the cylinder by the solenoid
The rivet and pull
The head firmly against the workpiece
It is characterized by operating as follows .

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a schematic diagram of an automatic rivet driving tool according to the teachings of the present invention. Riveting tool of the present invention
Bracket riveting pulling head 10 of the support 1
2, the support bracket 12 can be vertically displaced vertically by a guide rod or a plurality of guide rods 14. The pulling head 10 moves down to
The head is pulled against the piece 20 and the rivet 16 held in the tip 18 is driven (pulling).
The head 10 descends and moves relative to the workpiece 20.
Of the rivet 16 held in the tip 18 of the head.
Pull the mandrel to drive the rivet 16
) . The pull head is actuated by a hydraulic / pneumatic intensifier 22 which increases the air pressure supplied by a conventional pneumatic source 24. The intensifier operates when the first pneumatic solenoid valve 26 is excited. The work piece is supported at a position selected by means not shown.

[0007] Pull head 10, handle bracket 1
1 and bracket 12 are balanced by one or more double-acting cylinders 30,
Is located between the support bracket 12 and the machine base 32. Pneumatic pressure is supplied from pneumatic source 24 and travels through precision pressure regulator 34 to the bottom of cylinder 30 to balance the system. Ensure fail-safe operation by using a normally closed two-way spring-return solenoid valve 36 to stop cylinder operation whenever power drops or pressure switch 38 detects pressure loss. Can be.

In order to set the rivet correctly, when the pulling head 10 is sufficiently lowered to the position where the rivet is set, the pair of proximity switches 40 is adjusted by the adjustment target 42.
To send a signal to the controller 44. As can be seen from the drawing, pulling head 1 to the rivet driving position
The handle 46 of the handle portion 11 used by the operator to lower 0 is urged by a spring 48. The spring is strong enough that there is no relative movement of the handle relative to the tension head during operation of the tension head 10 . When the tensioning head 10 reaches the position where the rivet is to be driven, the operator operates the spring 48 to cause relative movement between the handle and the tensioning head until the proximity switch 50 signals the controller 44 .
Must be compressed. When the controller 44 receives signals from all three switches (40, 40, 50), the controller opens the first pneumatic solenoid cylinder 26 and activates the pull head (the intensifier 22 is activated).
Workpiece 20 on the mandrel of rivet 16 through
A pulling force acting in the direction away from the cylinder 30 is applied) , and at the same time, the third pneumatic solenoid 52 normally located at the position where the upper part of the cylinder 30 is evacuated is excited, and a predetermined pressure controlled by the second precision pressure regulator 54 is given. Cylinder 3 by pressure
0 to the top 18 of the pulling head to supply air .
The rivet flange 58 is pressed against the workpiece 20. The controller has a timer that activates the pull head 10 and controls the time that the cylinder 30 keeps pushing the pull head down. After a lapse of time by this timer, the second and third solenoid valves 36, 52 return to the closed position, and cause the operator to raise the rivet driving tool. The two proximity switches 40 also ensure that the assembly contains the correct number of parts to be riveted and control the pull head in the correct riveting position.

[Brief description of the drawings]

FIG. 1 is a schematic view of an automatic rivet driving tool according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Pulling head 11 Handle part 12 Bracket 16 Rivets 20 Workpiece 26, 36, 50 Solenoid valve 30 Cylinder 40, 50 Proximity switch

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Anthony D'Aquila, Valley View Road, Tumblel, Connecticut, USA 29 (56) References JP-A-1-166846 (JP, A) JP-A-63-260640 (JP, A) JP-B-61-60738 (JP, B2) JP-B-56-5608 (JP, B2) JP-B-61-35325 (JP, Y2) US Patent 4,901,431 (US, A) (58) Search Field (Int.Cl. ⁷ , DB name) B21J 15 / 10,15 / 18,15 / 32

Claims (8)

(57) [Claims] 1. A rivet driving tool, comprising: a rivet driving pulling head including holding means for holding a rivet; an operating means for driving a rivet held by the pulling head; and a work piece at a selected position. Means for supporting the rivet driving and pulling head,
Workpiece with the set rivets supported by the support means
Balanced with the rivet position where
Means for mounting the rivet driving and pulling head so that it can be moved manually by: a means for preventing operation of the operating means except when the rivet driving and pulling head is in the rivet position; and After that, the rivet
A rivet driving tool, comprising displacement prevention means for preventing the driving and pulling head from being displaced away from the rivet position to a position far from the rivet position and ensuring that the rivet is correctly driven. 2. The rivet driving tool according to claim 1, wherein said preventing means for preventing operation of said operating means detects that said rivet driving and pulling head having a rivet hits a workpiece. Hand to decide
A rivet driving tool comprising a step . 3. The rivet driving tool according to claim 2, wherein said preventing means for preventing operation of said operating means further includes handle means and supporting means for supporting said handle means, wherein said supporting means is , while the riveting pulling head is displaced, the holding means for holding said handle means in position <br/> respect to the riveting pulling head and the riveting pulling head holding a rivet pressing the workpiece Means for permitting movement of the handle means relative to the rivet driving and pulling head, and a switch operable by the handle means when the handle means is displaced a predetermined distance relative to the rivet driving and pulling head. A rivet driving tool comprising means. 4. A riveting tool according to claim 1, wherein the displacement prevention means includes a pneumatic cylinder, a pneumatic cylinder actuating means for actuating the spatial pressure cylinder, 該Ri
Rivet driving tool bet implantation pulling head is characterized in that it comprises means for preventing the actuation of the pneumatic cylinder operating means except when in the rivet positions. 5. A rivet driving tool, comprising: a rivet driving tension head including holding means for holding a rivet; a means for supporting a workpiece in a selected position; a remote position; Retained
Workpiece with the set rivets supported by the support means
Balanced with the rivet position where
In comprising means for attaching the rivet implantation pulling head for movement manually, while driving the rivet, and a pressing means for pressing the rivet implanted pulling head holding a rivet relative to the workpiece, said pressing means, It is allowed to act on the piston housed air pressure to the cylinder by a solenoid, a rivet driving tool, characterized in that firmly pressed against the rivet implanted pulling head relative to the workpiece. 6. The rivet driving tool according to claim 5, wherein said pressing means includes means for detecting and determining that said rivet driving pulling head having rivets is hitting a workpiece. Riveting tool featuring. 7. The rivet driving tool according to claim 5, wherein said pressing means further includes handle means and support means for supporting said handle means, said support means being adapted to displace said rivet driving tension head. while a holding means for holding said handle means at a predetermined position <br/> respect to the riveting pulling head, when said rivet driving pulling head is pressed against the workpiece to hold the rivet, the riveting and permitting means for permitting movement of said handle means for pulling the head, the handle means characterized in that it comprises a switch means actuable by said handle means when displaced by a predetermined distance with respect to said rivet driving pulling head Riveting tool. 8. A rivet driving tool for driving a rivet into a workpiece, the rivet driving tension head including holding means for holding the rivet , and driving a rivet held by the rivet driving tension head. means driving, and a handle means which can be gripped by hand, includes a support means for supporting said handle means, said support means, the predetermined position while, with respect to the riveting pulling head the rivet implantation pulling head is displaced the handle means is held in, when said rivet driving pulling head is pressed against the workpiece to hold the rivet, to permit movement of said handle means to said rivet driving pulling head comprises a holding-acceptable means, said rivet driving tool, also, the handle means the tension driving the rivet Includes a switch means actuable by said handle means when displaced by a predetermined distance with respect to head, said switching means, after the handle means is moved relative to the cited tension head sends a signal to the controller, the Con
A rivet driving mechanism , wherein the troller controls a solenoid to cause air pressure to act on a piston housed in a cylinder by the solenoid , and to operate the rivet driving / pulling head firmly against a workpiece. tool.