A nail gun includes a muzzle device, a cartridge device and a driving device. The muzzle device includes a safety member having an abutment end retractable when pushed. The cartridge device includes a stop member for blocking the drive stroke when a number of the nails is less than a predetermined number. The driving device includes a linking member co-movable with the safety member, and a trigger unit including a pivotable trigger, an inner arm co-movable with the trigger, and a switch member. When the switch member is at a sequential striking position and when the trigger is pivoted before a rearward movement of the linking member, the inner arm is withdrawn from a route of the rearward movement to avoid actuation of the drive stroke.

The present invention relates to a coupling element of tracking tags and semi-finished metallurgical products. The coupling element comprises: at least a fixing portion adapted to permanently engage a respective semi-finished metallurgical product; at least a receiving portion engaged to the fixing portion and for receiving with engagement at least one tracking tag; at least a retaining portion engaged with the receiving portion of the tracking tag on the opposite side with respect to the fixing portion to keep the respective tracking tag trapped between the target semi-finished metallurgical product and the retaining portion when the coupling element is engaged with a semi-finished metallurgical product. The fixing portion has at least one tapering defining a pointed end arranged to penetrate a respective semi-finished metallurgical product. A system for applying coupling elements is provided which provides for the use of an application device with striker.

The present invention relates to a coupling element of tracking tags and semi-finished metallurgical products. The coupling element comprises: at least a fixing portion adapted to permanently engage a respective semi-finished metallurgical product; at least a receiving portion engaged to the fixing portion and for receiving with engagement at least one tracking tag; at least a retaining portion engaged with the receiving portion of the tracking tag on the opposite side with respect to the fixing portion to keep the respective tracking tag trapped between the target semi-finished metallurgical product and the retaining portion when the coupling element is engaged with a semi-finished metallurgical product. The fixing portion has at least one tapering defining a pointed end arranged to penetrate a respective semi-finished metallurgical product. A system for applying coupling elements is provided which provides for the use of an application device with striker.

A driving module for driving fasteners into a workpiece, the fasteners being interconnected via a connection mechanism to form a fastener belt and being magazined and rolled up to form a fastener belt roll, wherein the driving module has a driving apparatus, wherein the driving module has a mounting portion for mounting the driving apparatus on a workpiece bridge, wherein the driving apparatus has a driving drive, which acts on the respective fasteners to be driven with a driving force by way of a driving ram that is displaceable in the driving direction, and wherein a magazine having at least one exit portion is connectable to the driving apparatus; and by way of the exit portion, the fastener belt can be routed out of the magazine, and wherein the magazine has at least one fastening portion for fastening the magazine or parts thereof to the driving apparatus, wherein the magazine has at least two belt roll holders, each for receiving at least one fastener belt roll.

A driving module for driving fasteners into a workpiece, the fasteners being interconnected via a connection mechanism to form a fastener belt and being magazined and rolled up to form a fastener belt roll, wherein the driving module has a driving apparatus, wherein the driving module has a mounting portion for mounting the driving apparatus on a workpiece bridge, wherein the driving apparatus has a driving drive, which acts on the respective fasteners to be driven with a driving force by way of a driving ram that is displaceable in the driving direction, and wherein a magazine having at least one exit portion is connectable to the driving apparatus; and by way of the exit portion, the fastener belt can be routed out of the magazine, and wherein the magazine has at least one fastening portion for fastening the magazine or parts thereof to the driving apparatus, wherein the magazine has at least two belt roll holders, each for receiving at least one fastener belt roll.

A fastener delivery system for transporting and dispensing fasteners comprises a source of pressurized air, a dispenser configured for dispensing each of the fasteners into a workpiece, a first pathway providing a first passageway for the fasteners to pass through, and a second pathway providing a second passageway for the fasteners to pass through. Each of the first pathway and the second pathway is placed in selective fluid communication with the source of pressurized air to blow one of the fasteners disposed in the first pathway or the second pathway towards the dispenser. The dispenser includes a toggle feature for alternatingly receiving the fasteners from each of the first pathway and the second pathway. Each of the pathways includes an air brake mechanism for decelerating each of the fasteners as each of the fasteners approaches the dispenser.

A driving tool for driving fasteners means into workpieces comprising a main cylinder with a piston displaceable therein and a sealing element on the lower end with a first through hole through which a piston rod connected to the piston is guided in a sealing manner, a pressing cylinder that carries on the lower end an outlet tool with a driving channel into which a lower section of a driving tappet connected to the piston rod projects through an upper opening and that has a lower opening at the bottom for discharging fasteners, a magazine for fastening means that is attached to a side opening of the driving channel in order to supply fasteners to the driving channel, a first holding device that has a first holding element connected to the piston rod and a second holding element connected to the pressing cylinder that are designed so that the pressing cylinder can be displaced into an upper pressing cylinder position by displacing the piston into an upper piston position and the outlet tool can be placed onto a workpiece by displacing the piston downwards from the upper piston position, a first stop device that has a first stop element connected to the piston rod and a second stop element connected to the pressing cylinder that are designed to limit the downward displacement of the driving tappet in order to drive a fastening element out of the driving channel and into a workpiece to a determined penetration depth by the driving tappet.

A driving tool for driving fasteners means into workpieces comprising a main cylinder with a piston displaceable therein and a sealing element on the lower end with a first through hole through which a piston rod connected to the piston is guided in a sealing manner, a pressing cylinder that carries on the lower end an outlet tool with a driving channel into which a lower section of a driving tappet connected to the piston rod projects through an upper opening and that has a lower opening at the bottom for discharging fasteners, a magazine for fastening means that is attached to a side opening of the driving channel in order to supply fasteners to the driving channel, a first holding device that has a first holding element connected to the piston rod and a second holding element connected to the pressing cylinder that are designed so that the pressing cylinder can be displaced into an upper pressing cylinder position by displacing the piston into an upper piston position and the outlet tool can be placed onto a workpiece by displacing the piston downwards from the upper piston position, a first stop device that has a first stop element connected to the piston rod and a second stop element connected to the pressing cylinder that are designed to limit the downward displacement of the driving tappet in order to drive a fastening element out of the driving channel and into a workpiece to a determined penetration depth by the driving tappet.

A nail gun structure includes a body portion including a punch portion; an air cylinder between the body portion and a swaying clamp arm, and having a telescopic rod pivotally connected with the clamp arm, the air cylinder having a piston, a first bore and a second bore disposed along an axial direction of the telescopic rod, the piston connected with the telescopic rod and reciprocating to control the communication of the second bore; and a control valve disposed between the air cylinder and the body portion, and having a tube set connected with an air source and also between the air cylinder and the body portion. When the air source and the tube set communicate with the first bore, the piston moves to allow the communication of the second bore. After the clamp arm clamping a wooden board, the punch portion punches to launch the nail.

A nail gun structure includes a body portion including a punch portion; an air cylinder between the body portion and a swaying clamp arm, and having a telescopic rod pivotally connected with the clamp arm, the air cylinder having a piston, a first bore and a second bore disposed along an axial direction of the telescopic rod, the piston connected with the telescopic rod and reciprocating to control the communication of the second bore; and a control valve disposed between the air cylinder and the body portion, and having a tube set connected with an air source and also between the air cylinder and the body portion. When the air source and the tube set communicate with the first bore, the piston moves to allow the communication of the second bore. After the clamp arm clamping a wooden board, the punch portion punches to launch the nail.