JP5783379B2 - Driving machine - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving machine for driving a stopper such as a nail or a pin into a material to be driven such as wood in the axial direction, and in particular, a mechanism for loading a stopper such as a nail or a pin into an injection passage. About.

  FIG. 11 is a partial cross-sectional view of a conventional pneumatic driving machine that hits a stopper such as a nail using compressed air as a power source. 12 to 16 are cross-sectional views taken along the line BB in FIG. 11 and 12 show the state immediately before the start of the operation of hitting a nail as a stopper, and the structure and operation will be described below.

  The pneumatic driver is fixed to a main body 1 having a main cylinder 4 fixed in a housing 10 and a lower portion of the main body 1 and is substantially perpendicular to a target material (not shown) such as wood when nailing. It is mainly comprised from the nose part 40 located in. The main cylinder 4 is a cylindrical member that contains the main piston 3. In the following, the sliding direction of the main piston 3 sliding in the main cylinder 4 and the direction from the main body 1 toward the nose portion 40 is referred to as the downward direction, and the opposite direction is referred to as the upward direction.

  The housing 10 integrally has a handle 50 oriented in a direction substantially perpendicular to the vertical direction. The handle 50 is a portion that is gripped by an operator. A trigger 8 operated by an operator and a trigger valve 19 operated by the trigger 8 are disposed at the base of the handle 50. The trigger valve 19 is a switching valve that communicates with a later-described main valve 7 to send and exhaust compressed air. In order to accumulate compressed air from a compressor (not shown), a pressure accumulating chamber 2 is formed inside the housing 10. The pressure accumulating chamber 2 is connected to the compressor via an air hose (not shown).

  The main body 1 includes a cylindrical main cylinder 4, a main piston 3 slidable up and down (reciprocating) in the cylinder 4, and a driver blade 30 formed integrally with the piston 3 inside the housing 10. Prepare. In the housing 10, a return chamber 5 that stores compressed air for returning the piston 3 to the top dead center is formed on the lower outer periphery of the cylinder 4. A check valve 12 is provided at the center of the cylinder 4 in the axial direction, and compressed air is allowed to flow from the inside of the cylinder 4 into the return chamber 5 outside the cylinder 4 only in one direction. A return passage 13 that is always open to the return chamber 5 is formed in the lower portion of the cylinder 4.

  A tail cover portion 14 that closes the lower end surface of the main cylinder 4 is integrally formed on the upper portion of the nose portion 40. The tail cover portion 14 is formed on the tail cover portion 14, that is, the lower end portion in the cylinder 4. A bumper 6 made of an elastic material such as rubber is provided near the bottom dead center. The driver blade 30 integrated with the piston 3 can pass through the bumper 6, further pass through the through hole 29 of the tail cover portion 14, and can descend the injection passage 41 inside the nose portion 40. The lower end of the nose portion 40 is an injection port 42 through which the nail is injected toward the workpiece.

  The push lever 9 is provided so as to be movable up and down with respect to the nose portion 40 so as to protrude downward from the lower end of the nose portion 40. The push lever 9 is biased downward. As is well known, when both the pulling operation of the trigger 8 and the pressing operation of the push lever 9 against the material to be driven are performed, the trigger valve 19 is operated to send compressed air to the main valve 7 side. It is configured as follows. The main valve 7 is movable up and down in a main valve chamber 18 provided at an upper position of the cylinder 4 and controls opening and closing of a flow path between the pressure accumulating chamber 2 for storing pressure and the inner chamber of the main cylinder 4. .

  A feeder mechanism 60 shown in FIGS. 12 to 16 is provided on the side of the nose portion 40. The feeder mechanism 60 accommodates a nail connection body in which a large number of nails are connected with wires, tapes, etc. in a fixed posture. The magazine 70 is installed. The feeder mechanism 60 is a mechanism for receiving a nail connector from the magazine 70 and supplying each nail to the injection passage 41, that is, directly below the driver blade 30, and slides inside the feed cylinder 15. It has a feed piston 16, a feeder 17, a nail guide 21, a nail stopper 25, and the like. When the nail guide 21 is pulled out from the magazine 70, it is arranged along the supply path 45 of the nail connector (for example, it is formed integrally with the nose portion 40), and the nail stopper 25 is pivotally attached to the nail guide 21 by the nail stopper rotating shaft 25a. Has been. The nail stopper 25 is urged leftward (in a direction protruding to the supply path 45) by a spring (not shown).

  Compressed air from a compressor (not shown) is filled into the pressure accumulation chamber 2 via an air hose (not shown). When the operator presses the push lever 9 against the material to be driven and operates the trigger 8, the trigger valve 19 opens, the main valve 7 moves upward to leave the main cylinder 4, and the pressure accumulation chamber 2 and the main cylinder 4 are moved. The interior rooms communicate. At the same time, the upper part of the main valve 7 comes into contact with the inner wall of the main body to block between the main cylinder 4 inner chamber and the expansion chamber 11. The compressed air accumulated in the pressure accumulating chamber 2 flows into the upper chamber of the main piston 3 in the main cylinder 4 and starts the operation of pushing down the main piston 3 and driving a nail (first nail 20a in the figure) into the workpiece. To do.

  As the main piston 3 descends, the air compressed in the lower chamber of the main piston 3 is filled into the return chamber 5 through a check valve 12 installed in the middle of the main cylinder 4 and a return passage 13 formed below the main cylinder 4. The Further, when the main piston 3 descends and passes through the check valve 12, high-pressure air in the upper chamber of the main piston 3 that pushes down the main piston 3 is filled from the check valve 12 into the return chamber 5. At the same time, part of the air charged in the return chamber 5 flows into the upper chamber of the feed piston 16 of the feed cylinder 15 and resists the elastic force of the feed spring 23 installed in the lower chamber of the feed piston 16. Press down. A feeder arm 22 is coupled to one end of the feed piston 16, and a feeder 17 is pivotally attached (rotatably coupled) to the feeder arm 22 by a pin 17 a. Since the feeder spring 24 is compressed and installed between the feeder arm 22 and the feeder 17, the feeder 17 is biased in the clockwise rotation direction, and a part of the feeder 17 comes into contact with the nose portion 40, so that the rotational position is set. It is regulated.

  When the feed piston 16 descends as shown in FIG. 13, the feeder 17 comes into contact with the second nail 20b, but the nail is restrained from moving backward (downward in FIG. 13) by the nail stopper 25. The feeder 17 rotates according to the inclination of the contact surface and gets over the second nail 20. At this time, since the speed of the feed piston 16 is high, the feeder 17 does not only get over the nail as shown in FIG. 14, but further moves while the feed piston 16 reaches the bottom dead center while rotating.

  The push lever 9 is configured to turn off the trigger valve 19 when the main body 1 is lifted by the reaction of driving, or when the operator releases the trigger 8 and turns off the trigger valve 19, the main valve 7 is moved downward. To return to the initial position. The main valve 7 is in contact with the main cylinder 4 to shut off the pressure accumulating chamber 2 and the main cylinder 4 inner chamber, and the upper portion of the main valve 7 is separated from the inner wall of the main body so that the main cylinder 4 inner chamber and the expansion chamber 11 communicate with each other. Therefore, the compressed air in the upper chamber of the main piston 3 passes through the expansion chamber 11 and is discharged out of the main body. The main piston 3 moves upward by the compressed air in the return chamber 5 and returns to the initial position.

  Since the return chamber 5 and the upper chamber of the feed piston 16 in the feed cylinder 15 communicate with each other, the pressure in the upper chamber of the feed piston 16 also decreases at the same time, and the feed piston 16 is caused by the elastic force of the feed spring 23 installed below. Start returning to the initial position. As shown in FIG. 15, the feeder 17 returns to the initial angle while moving upward, pushes the second nail 20 b forward (pushes up in the drawing), and loads it into the injection passage 41.

  The above is the driving behavior of a general driving machine, and the feeder 17 performs a reciprocating motion (with some rotational motion) linked to the reciprocating motion of the feed piston 16. On the other hand, the following Patent Document 1 has been proposed as a configuration for loading a nail by rotating a feeder.

JP 2005-288607 A

  Since the driving machine described in Patent Document 1 is a combustion-type nailing machine, it has a power source for igniting. The motor for nail loading is driven by the power source, the position is detected by the sensor, the motor is braked and the nail is loaded. The structure described in Patent Document 1 is a structure that is made possible by having a power supply.

  The important point in the conventional driving machine shown in FIG. 11 is the timing when the rotated feeder 17 returns to the initial position by the feeder spring 24 with respect to the upward movement of the feed piston 16. Specifically, before the feeder 17 moves up and passes through the second nail 20b, the feeder 17 must return to the initial position. FIG. 15 is a diagram showing the normal operation. The feeder 17 returns to the initial position under the second nail 20b, and the feeder 17 moves forward as it is, so that the second nail 20b is moved into the injection passage 41. Can be loaded. FIG. 16 is a diagram showing an operation at the time of abnormality. Even when the feeder 17 moves forward and passes through the second nail 20b, it has not yet returned to the initial value. If the feeder 17 moves forward as it is, the second nail 20b cannot be loaded into the injection passage 41, and there is a risk of poor driving.

  As described above, in the driving machine having the conventional structure, the feeder 17 has a problem that the nail is not stably loaded depending on the timing when the feeder 17 returns to the initial position, resulting in a driving failure.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a driving machine capable of reliably mounting a stopper such as a nail or a pin without using a position sensor or a brake. is there.

An aspect of the present invention is a driving machine, which is driven by a driving mechanism provided in a main body and a driver blade that hits a stopper,
A nose portion that guides the driver blade and is formed with an injection passage through which the stopper is supplied and injected;
A feeder mechanism having a reciprocating drive body, a connecting rod having one end pivotally attached to the reciprocating drive body, and a rotary feeder having the other end pivotally attached to the reciprocating drive body, and supplying the stopper to the injection passage. And
The rotary feeder is provided with a claw for feeding the stopper, and when the reciprocating motion of the reciprocating drive body is transmitted to the rotary feeder by the connecting rod, the rotary feeder rotates in one direction and the A claw loads the stopper into the injection passage.

  The said aspect WHEREIN: The said rotary feeder has one said nail | claw on the outer periphery, and it is good for it to be the structure which loads one stopper to the said injection | throwing-in path | route every time it rotates.

  In the above aspect, the support shaft serving as the rotation center of the rotary feeder is engaged with an oval groove or hole provided in the main body or nose portion, and the tip trajectory of the claw is taken from the stopper after loading. It is preferable that after the separation, the next stopper enters the tip locus, and the stopper behind the next stopper does not enter the tip locus.

  In the above aspect, the direction of the ellipse of the oval groove or hole is inclined with respect to the direction of the reciprocating motion of the reciprocating drive body, and the driver blade is the earliest stop located in the injection passage Before the rotary feeder is hit, the support shaft that is the rotation center of the rotary feeder is located at the position of the oval groove or hole farthest from the reciprocating drive body and away from the injection passage, and the claw May be configured to hold the earliest stopper so as not to drop off immediately before the injection passage.

  In the aspect described above, the claw may be moved to a position where the driver blade is retracted when the driver blade passes through the injection passage.

  In the above aspect, the reciprocating drive body may be a feed piston capable of reciprocating in a feed cylinder, and one end of the connecting rod may be pivotally attached to the feed piston.

  In the above aspect, the drive mechanism is operated by operating a pressure accumulation chamber for storing compressed air, a main cylinder, a main piston capable of reciprocating in the main cylinder, and the driver blade being integrated, and a trigger. The main valve for controlling the communication between the pressure accumulating chamber and the main cylinder and a return chamber for accumulating pressure for returning the main piston to the top dead center may be used.

  It should be noted that any combination of the above-described constituent elements, and those obtained by converting the expression of the present invention between methods and systems are also effective as aspects of the present invention.

  According to the driving machine according to the present invention, the stopper such as a nail or a pin is loaded into the injection passage by the nail of the rotary feeder that rotates in one direction, but before the driver blade hits the earliest stopper. The rotational angle position of the rotary feeder in the initial state is kept constant, and the stopper can be loaded stably and reliably. There is no need to add a position sensor or brake.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole structure of embodiment of the driving machine which concerns on this invention, Comprising: The side view which made one part a cross section. AA sectional drawing of FIG. FIG. 3 is a cross-sectional view taken along line AA in a state where the feed piston is lowered by 2 mm from FIG. FIG. 4 is a cross-sectional view taken along line AA in a state where the feed piston is lowered by 2 mm from FIG. 3. The AA sectional view immediately after a feed piston reaches bottom dead center. FIG. 6 is a cross-sectional view of the rotary feeder taken along the line AA in FIG. FIG. 7 is a cross-sectional view taken along the line AA in a state where the feed piston is lifted by 2 mm from FIG. 6. AA sectional drawing of the state raised to the position of 2 mm to the top dead center of a feed piston. AA sectional drawing of the state which returned to the initial position. In embodiment, the fragmentary sectional view of the nose part which made the feeder mechanism a cross section. The side view which made a part of conventional driving machine the cross section. BB sectional drawing of FIG. BB sectional drawing of a state where a feeder gets over the 2nd nail. BB sectional drawing immediately after a feed piston reaches bottom dead center. The BB sectional view in the state where a feeder loads a nail normally. BB sectional drawing of the state which cannot load a nail by the abnormal behavior of a feeder.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, process, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

  FIG. 1 is a partial cross-sectional view of a pneumatic driving machine that hits a stopper such as a nail or a pin using compressed air as a power source, FIGS. 2 to 9 are cross-sectional views taken along line AA in FIG. The partial sectional view (however, the figure seen from the back side of Drawing 1) of the nose part which made the feeder mechanism a section is shown, respectively. 1 and 2 show a state immediately before the start of the operation of hitting a nail as a stopper. In the present embodiment, the feeder mechanism 80 is different from the conventional example of FIG. 11, but is otherwise the same as the conventional example of FIG. 11, and therefore the feeder mechanism 80 will be described in detail below.

  A feeder mechanism 80 shown in FIGS. 2 to 10 is provided at a side portion of the nose portion 40 fixed to the lower portion of the main body 1. A large number of nails are fixed to the feeder mechanism 80 in a fixed posture by a wire, tape. A magazine 70 that houses nail connectors connected by, for example, is mounted. The feeder mechanism 80 is a mechanism for receiving a nail connection body from the magazine 70 and supplying each nail to the injection passage 41, that is, directly below the driver blade 30, and slides inside the feed cylinder 15. It has a feed piston 16 as a reciprocating drive, a nail guide 21, a nail stopper 25, a rotary feeder 26, a connecting rod 28, and the like.

  One end of a connecting rod 28 is pivotally attached (rotatably connected) to the tip of the feed piston 16, and the other end of the connecting rod 28 is pinned to a portion eccentric from a support shaft 26 a that serves as the rotation center of the rotary feeder 26. It is pivotally attached. The support shaft 26 a of the rotary feeder 26 is engaged with an oval groove 40 a provided in the nose portion 40. These form a crank mechanism that converts the reciprocating motion of the feed piston 16 into the rotational motion of the rotary feeder 26. In the standby state, the feed piston 16 is urged to the top dead center by the feed spring 23. At this time, the claw 26b of the rotary feeder 26 is configured to be in a position for supporting the nail (first nail 20a) of the injection passage 41. The support shaft 26a of the rotary feeder 26 is engaged with an oval groove 40a provided in the nose portion 40 with play, and is movable in the groove. The oval groove 40a is slightly inclined with respect to the axial direction of the feed piston 16 in the plane of FIG. 2 (the upper end is slightly leftward). In the standby state, the support shaft 26a of the rotary feeder 26 is abutted by the connecting rod 28 in the upper left direction of the oval groove 40a. That is, the support shaft 26 a is located at the position of the oval groove 40 a farthest from the feed piston 16 and also away from the injection passage 41. As will be described later, the locus 27 of the tip of the claw 26b of the rotary feeder 26 is indicated by a two-dot chain line in FIGS.

  When the nail guide 21 is pulled out from the magazine 70, it is arranged along the supply path 45 of the nail connector (for example, it is formed integrally with the nose portion 40), and the nail stopper 25 is pivotally attached to the nail guide 21 by the nail stopper rotating shaft 25a. Has been. The nail stopper 25 is urged leftward (in a direction protruding to the supply path 45) by a spring (not shown).

  When an operator presses the main body 1 against an object to be driven such as wood (actuating the push lever 9) and pulls the trigger 8, the main valve 7 is opened and the main piston 3 is lowered and loaded into the injection passage 41. The nail 20a that had been used is driven. Almost simultaneously, the return valve 5 is filled with compressed air from the check valve 12 installed between the lower chamber of the main piston 3 and the main cylinder 4, and the compressed air is also filled into the upper chamber of the feed piston 16. Therefore, the feed piston 16 descends against the elastic force of the feed spring 23. The force that pushes down the feed piston 16 is transmitted to the rotary feeder 26 via the connecting rod 27. When the support shaft 26a of the rotary feeder 26 finishes moving in the oval groove 40a downward in FIG. 2 and hits, the rotary feeder 26 starts rotating counterclockwise and rotates until the feed piston 16 reaches bottom dead center. To do.

  FIG. 3 shows a state in which, after the trigger 8 is pulled and the main valve 7 is opened, compressed air flows into the upper chamber of the feed piston 16 and the feed piston 16 moves downward by 2 mm. When the feed piston 16 moves downward, a force for lowering the rotary feeder 26 downward through FIG. Here, since the component force acting downward is larger than the component force that rotates the rotary feeder 26 in the left direction, the support shaft 26a of the rotary feeder 26 is first moved along the oval groove 40a provided in the nose portion 40 to the right. It moves downward until it hits the inner peripheral surface of the oval groove 40a. At this time, since the driver blade 30 is moving in the direction perpendicular to the plane of the drawing in FIG. 3, the claw 26 b of the rotary feeder 26 bypasses the driver blade 30 as shown by a locus 27 when the center of the shaft 26 a moves in the lower right direction. To do. Thereafter, the rotary feeder 26 rotates counterclockwise by the rotational force acting on the rotary feeder 26.

  FIG. 4 shows a state where the feed piston 16 is further lowered by 2 mm from FIG. 3, and the rotary feeder 26 is rotating counterclockwise through the connecting rod 28.

  FIG. 5 shows a state where the feed piston 16 has reached bottom dead center.

  When the operator releases the trigger 8 or the push lever 9 moves away from the workpiece, the main valve 7 starts to return to the initial position, and the pressure in the upper chamber of the feed piston 16 almost simultaneously. Therefore, the feed piston 16 starts to rise to the initial value. The force that pushes up the feed piston 16 is transmitted to the rotary feeder 26 via the connecting rod 28. The support shaft 26a of the rotary feeder 26 moves to the initial value along the oval groove 40a, and then rotates counterclockwise as the feed piston 16 rises.

  FIG. 6 is a view immediately after FIG. 5, and the rotary feeder 26 tries to rotate by inertial force, so the support shaft 26 a of the rotary feeder 26 is located at the upper left along the oval groove 40 a provided in the nose portion 40. The connecting rod 28 moves in the direction until it hits the inner peripheral surface of the oval groove 40a, and the connecting rod 28 becomes vertical.

  FIG. 7 shows a state where the feed piston 16 is lifted 2 mm from the bottom dead center of FIG. 6, and the rotary feeder 26 is rotating counterclockwise through the connecting rod 28.

  FIG. 8 shows a state in which the feed piston 16 further moves up from FIG. 7 and is positioned up to 2 mm from the initial top dead center. The supply path 45 of the nail connector is bent in a direction approaching the rotary feeder 26 so that the second nail 20b enters the track of the claw 26b of the rotary feeder 26. Therefore, since the second nail 20b is waiting on the track of the claw 26b of the rotary feeder 26, the second nail 20b is loaded into the injection passage 41 by the rotation of the rotary feeder 26 as shown in FIG.

  FIG. 9 shows a state in which the top dead center is returned to the initial value, and the claw 26b of the rotary feeder 26 presses the second nail 20b in the nail coupling body in the forward direction so as not to drop (upward in FIG. 9). In this state, the injection passage 41 is loaded. At this time, the third nail 20c connected by a wire, tape or the like is hung on the nail stopper 25. However, since the third nail 20c is rotatable rightward about the nail stopper rotating shaft 25a, the third nail 20c is nail stopper 25. Push right to get over and move. Since the nail stopper 25 is urged leftward by a spring (not shown), the third nail 20c returns to the initial position after passing. The above is a series of operations in the embodiment.

  According to the present embodiment, the following effects can be achieved.

(1) The conventional structure of the driving machine has a problem that the nail is not loaded stably because the feeder behavior becomes unstable depending on the setting of the supply pressure and the hardness of the material to be driven. According to the present embodiment, the rotary feeder 26 reliably rotates once regardless of the operation speed and timing of the feed piston 16, and the first nail (first nail 20a) is moved to the injection passage 41 by the claw 26b. Can be loaded. Further, the initial rotation angle of the rotary feeder 26 is fixed at the top dead center which is the initial value of the feed piston 16. Therefore, the nail can be loaded stably and reliably.

(2) A support shaft 26a, which is the rotation center of the rotary feeder 26, is engaged with and supported by an oval groove 40a (inclined with respect to the reciprocating direction of the feed piston 16) provided in the nose portion 40. By doing so, the tip locus of the claw 26b can be a locus different from a simple perfect circle, and after leaving the first stopper 20a loaded with the claw 26b, the next second stopper 20b. Can be set so as to fall within the tip locus and not into the tip locus after the third stopper 20c.

(3) It can be driven only with compressed air, and no additional devices such as motors, sensors, and brakes are required.

  The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, modifications will be described.

  A similar oval hole may be provided in the nose portion 40 instead of the oval groove 40a illustrated in the embodiment. Further, the oval groove or hole may be provided in the extended portion by forming an extended portion in the main body 1.

  In the embodiment of the present invention, a pneumatic driving machine using compressed air as a power source has been exemplified. However, the present invention can also be applied to a gas driving type or an electric driving machine.

DESCRIPTION OF SYMBOLS 1 Main body 2 Accumulation chamber 3 Main piston 4 Main cylinder 5 Return chamber 6 Bumper 7 Main valve 8 Trigger 9 Push lever 10 Housing 11 Expansion chamber 12 Check valve 13 Return passage 14 Tail cover part 15 Feed cylinder 16 Feed piston 17 Feeder 18 Main Valve chamber 19 Trigger valve 20a, 20b, 20c Nail 21 Nail guide 22 Feeder arm 23 Feed spring 24 Feeder spring 25 Nail stopper 25a Nail stopper rotation shaft 26 Rotary feeder 26a Support shaft 26b Claw 27 Trajectory 28 Claw 26a tip 28 Connecting rod 29 Through hole 30 Driver blade 40 Nose part 40a Oval groove 41 Injection passage 42 Injection port 50 Handle 60, 80 Feeder mechanism 70 Magazine

Claims (7)

A driver blade driven by a drive mechanism provided in the main body and hitting a stopper;
A nose portion that guides the driver blade and is formed with an injection passage through which the stopper is supplied and injected;
A feeder mechanism having a reciprocating drive body, a connecting rod having one end pivotally attached to the reciprocating drive body, and a rotary feeder having the other end pivotally attached to the reciprocating drive body, and supplying the stopper to the injection passage. And
The rotary feeder is provided with a claw for feeding the stopper, and when the reciprocating motion of the reciprocating drive body is transmitted to the rotary feeder by the connecting rod, the rotary feeder rotates in one direction and the A claw loads the stopper into the injection passage.   2. The driving machine according to claim 1, wherein the rotary feeder has one claw on an outer periphery, and loads one stopper into the injection passage every rotation.   A support shaft serving as a rotation center of the rotary feeder is engaged with an oval groove or hole provided in the main body or nose portion, and the tip locus of the claw is separated from the stopper after loading. The driving machine according to claim 1 or 2, wherein a next stopper is set in the tip locus, and a stopper behind the next stopper is not set in the tip locus.   The direction of the ellipse of the oval groove or hole is inclined with respect to the direction of the reciprocating motion of the reciprocating drive body, and before the driver blade hits the earliest stopper located in the injection passage. Is a position where the support shaft that is the rotation center of the rotary feeder is located at the position of the oval groove or hole farthest from the reciprocating drive body and away from the injection passage, and the pawl is located at the injection passage. The driving machine according to claim 3, wherein the first stopper is pressed so as not to drop off immediately before.   The driving machine according to any one of claims 1 to 4, wherein the claw is moved to a position where the driver blade is retracted when the driver blade passes through the injection passage.   The driving machine according to any one of claims 1 to 5, wherein the reciprocating drive body is a feed piston capable of reciprocating in a feed cylinder, and one end of the connecting rod is pivotally attached to the feed piston.   The driving mechanism includes a pressure accumulating chamber that stores compressed air, a main cylinder, a main piston that is capable of reciprocating in the main cylinder and integrated with the driver blade, and an operation of a trigger to operate the pressure accumulating chamber and the The driving machine according to any one of claims 1 to 6, further comprising: a main valve that controls communication between main cylinders; and a return chamber that stores a pressure for returning the main piston to a top dead center.

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