JP2007313573A - Driving machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving machine that regulates a feeder position of a magazine without causing an increase in the number of components and that of assembling manhours. <P>SOLUTION: The driving machine is provided with a driver blade for striking a fastener while reciprocating, an injection part 20 that has an injection port 20a for guiding the driver blade and fastener, and the magazine 6 for successively supplying a plurality of the internally-loaded fasteners to the injection port 20a of the injection part 20. The magazine 6 is provided with a magazine body 6A mounted to the injection part 20, a magazine cover 6B provided to the magazine body 6A so as to be openable and closable, and a feeder 22 that is slidably provided in the magazine cover 6B so as to bias the fastener to the injection-port 20a side of the injection part 20. The feeder 22 is provided with a first stopper 22b which is brought into contact with the end face 20b of the injection part 20, and a second stopper 22c brought into contact with the front-wall inner face 6c of the magazine cover 6B. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a driving machine for driving a stopper such as a nail or a staple loaded in a magazine.

  A driving machine such as a nail driving machine includes a driver blade that reciprocates to hit a stopper such as a nail, an injection unit having an injection port that guides the driver blade and the stopper, and a plurality of parts loaded therein. A tool having a magazine for sequentially supplying a stopper to the injection port of the injection unit, and sequentially supplying a plurality of fasteners loaded in the magazine to the injection port of the injection unit and driving them into a target to be driven such as wood It is.

  Here, the configuration of a magazine mounted on a conventional driving machine will be described with reference to FIG.

  FIG. 7 is a partial cross-sectional view of a magazine portion of a conventional driving machine. In FIG. 7, reference numeral 120 denotes an injection portion provided at the tip of the driving machine body. A rectangular injection port 120a for guiding a stopper such as a nail hit by this is formed in a direction perpendicular to the paper surface. A magazine 106 that can be loaded with a strip-shaped connecting stopper formed by connecting a plurality of stoppers is attached to the end surface 120b of the injection portion 120 in the lateral direction. FIG. 7 shows a state in which all the fasteners are driven and no fasteners are left in the magazine 106.

  The magazine 106 includes a magazine main body 106A attached to the injection unit 120, a magazine cover 106B that is opened and closed by sliding in the length direction (left-right direction in FIG. 7) with respect to the magazine main body 106A, and the magazine It is provided with a feeder 122 that is slidably provided on the cover 106B and biases the connecting stopper toward the injection port 120a side of the injection unit 120.

  Here, the feeder 122 is a sheet metal part, and is biased toward the injection unit 120 by a spring 124 via a feeder piece 123 that is a pressing member that engages with the sheet metal component, and is loaded into the magazine 106. The terminal part of the connection stopper not shown is pressed to perform the function of sequentially feeding the stoppers one by one to the injection port 120a of the injection part 120 in conjunction with the driving operation.

  By the way, the feeder 122 is provided with a stopper 122b, and the magazine cover 106B has a slide stopper 122b when the magazine cover 106B is slid to the right in FIG. Roll pins 130 for preventing the feeder 122 from popping out from the magazine cover 106B are provided. As shown in FIG. 7, when all the stoppers are driven and no stoppers are left in the magazine 106, the feeder 122 has a stopper (not shown) provided thereon that contacts the end surface 120 b of the injection unit 120. The front end 122a is stationary at a position protruding from the injection port 120a of the injection unit 120 by a predetermined amount so that the last one can be driven by contact, as shown in the drawing.

In addition, although the proposal about the magazine of a nailing machine is made | formed in patent document 1, even when the connection of the nail accommodated in the magazine main body cut | disconnects, while preventing a nail from overlapping, Even when the magazine cover is closed, the remaining amount and length of the stored nails can be easily recognized.
JP 2006-000986 A

  In the magazine 106 attached to the conventional driving machine shown in FIG. 7, since the roll pin 130 for preventing the feeder 122 from coming off is provided on the magazine cover 106B, the number of parts increases and the work of attaching the roll pin 130 is performed. Therefore, there was a problem that the number of assembly steps increased.

  The present invention has been made in view of the above problems, and an object thereof is to provide a driving machine capable of regulating the position of a magazine feeder without causing an increase in the number of parts and the number of assembling steps. It is in.

  In order to achieve the above object, the invention according to claim 1 is loaded inside a driver blade that reciprocates to strike a stopper, an injection portion having an injection port that guides the driver blade and the stopper. A magazine is provided for sequentially supplying a plurality of fasteners to the injection port of the injection unit. The magazine includes a magazine main body attached to the injection unit, a magazine cover provided on the magazine main body so as to be opened and closed, and the magazine. In the driving machine including a feeder that is slidably provided on the cover and biases a stopper toward the injection port side of the injection unit, the feeder is provided with a first stopper that contacts the end surface of the injection unit, and the magazine A second stopper that contacts the inner surface of the front wall of the cover is provided.

  According to a second aspect of the present invention, in the first aspect of the invention, the first stopper comes into contact with an end surface of the injection portion when the stopper is lost in the magazine, and the second stopper is When the magazine cover is slid with respect to the magazine main body and opened, the magazine cover contacts the inner surface of the front wall of the magazine cover.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the feeder is integrally formed with the first and second stoppers.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein a plurality of the first stoppers are provided.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein a plurality of the second stoppers are provided.

  According to the first and second aspects of the present invention, when there is no stopper in the magazine, the first stopper of the feeder is brought into contact with the end surface of the injection portion to regulate the position of the feeder, and the tip of the feeder When the magazine cover is opened by sliding the magazine cover against the magazine body, the second stopper of the feeder Can be brought into contact with the inner surface of the front wall of the magazine cover to prevent the feeder from popping out. Since the feeder is provided with the first and second stoppers that perform such a function, and these stoppers are brought into contact with the existing injection portion and the magazine cover, respectively, the first and second stoppers are brought into contact with each other. Therefore, the position of the feeder of the magazine can be regulated without increasing the number of parts and the number of assembling steps.

  According to the third aspect of the invention, since the feeder is integrally formed with the first and second stoppers, the structure of the feeder is simplified and the molding thereof is facilitated.

  According to the fourth aspect of the present invention, since the plurality of first stoppers are provided, the tip of the feeder does not tilt in the injection port, and the driver blade does not stop, and the driver blade moves to the tip of the feeder. Can be evenly contacted, the feeder can be prevented from being damaged, and wear of the feeder and the driver blade can be reduced. If the first stoppers are provided on both sides of the spring, these can be more effectively operated.

  According to the invention described in claim 5, since the plurality of second stoppers are provided, the feeder does not tilt with respect to the sliding direction of the spring when the magazine cover is opened. When the magazine cover is later closed, the feeder can smoothly slide on the magazine cover. If the second stoppers are provided on both sides of the spring, these can be more effectively operated.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a cutaway side sectional view of a pneumatic nailing machine 1 as one embodiment of a driving machine according to the present invention. The illustrated nailing machine 1 includes a body 2 having a substantially horizontal T shape in a side view. An exhaust cover 3 is airtightly attached to the upper end opening of the body 2. An accumulator chamber S1 is formed in the body 2, and an air plug 4 for connecting an air hose (not shown) is provided at the rear end of the handle portion 2a.

  Further, the body 2 is mounted with a magazine 6 in which a strip-shaped connecting nail 5 (see FIG. 2) formed by connecting a large number of nails 5 a with an adhesive or the like can be loaded. A control valve 9 having a plunger 8 that moves up and down is provided.

  A cylinder 10 is provided in the body 2, and a piston 11 is fitted into the cylinder 10 so as to be slidable up and down. A plate-like driver blade 12 is integrally extended vertically downward from the piston 11, and the cylinder 10 is partitioned into a piston upper chamber S2 and a piston lower chamber S3 by the piston 11. A piston bumper 13 is provided at the bottom of the cylinder 10.

  Further, a return air chamber S4 partitioned by a partition wall 14 is formed in the lower half of the body 2 between the cylinder 10 and above and below a portion of the cylinder 10 that forms part of the return air chamber S4. A plurality of air holes 15 and 16 are formed in the circumferential direction, respectively, and a check valve 17 that allows only the flow of compressed air from the piston upper chamber S2 toward the return air chamber S4 is allowed in the upper air hole 15. Is provided.

  On the other hand, a head valve 18 that comes in contact with and separates from the upper surface of the cylinder 10 is provided in the exhaust cover 3 so as to be slidable up and down. In the direction of tight contact). A head valve chamber S5 is defined between the head valve 18 and the exhaust cover 3, and the head valve chamber S5 communicates with the control valve 9 through an air passage (not shown). .

  An injection unit 20 is attached to the tip of the body 2 and a push lever 21 is slidable up and down.

  Here, the detailed configuration of the magazine 6 will be described with reference to FIGS.

  2 is a cross-sectional view taken along line AA in FIG. 1, FIG. 3 is a rear view of the magazine cover, and FIG. 4 is an enlarged detailed view of a portion C in FIG. FIG. 5 is an enlarged detailed view of part C in FIG. 2 showing a state when the magazine cover is opened (part of the magazine cover is taken along line EE in FIG. 3). FIG. 6 is a perspective view of the feeder.

  In FIG. 2, reference numeral 20 denotes the injection portion. Inside the injection portion 20, as shown in detail in FIGS. 4 and 5, the driver blade 12 (see FIG. 1) and the nail 5 a hit by the driver blade 12. An injection port 20a having a rectangular cross section for guiding (see 2) is formed in the direction perpendicular to the plane of FIG. 4 and FIG. The magazine 6 is attached to the end face of the injection portion 20 in the lateral direction. The magazine 6 is loaded with strip-shaped connecting nails 5 formed by connecting a number of nails 5a.

  The magazine 6 is opened and closed by sliding in the length direction (vertical direction in FIG. 2 and horizontal direction in FIGS. 4 and 5) with respect to the magazine main body 6A attached to the injection unit 20 and the magazine main body 6A. Magazine cover 6B to be slid and provided on the magazine cover 6B so as to be slidable. A feeder 22 is provided.

  Here, the feeder 22 is a sheet metal part as shown in FIG. 6, and is urged toward the injection unit 20 by a spring 24 via a pressing member 23 engaged therewith. The end of the loaded connecting nail 5 (see FIG. 2) is pressed and the nail 5a is sequentially fed to the injection port 20a of the injection unit 20 one by one in conjunction with the driving operation.

  By the way, as shown in FIG. 6, the feeder 22 is provided with a wide flat tip portion 22a that abuts against the end portion of the connecting nail 5 and presses it toward the injection portion 20, and this tip portion 22a. A rectangular plate-like first stopper 22b on the left and right sides (two locations) of the rear side (rear side of the connecting nail 5 in the feeding direction (upward in FIGS. 2 and 3, right in FIGS. 4 and 5)) Is bent at a right angle and is erected. A rectangular plate-like second stopper 22c is bent at a right angle at a position offset from the first stopper 22b of the feeder 22 to the rear by e as shown in the figure. A large guide protrusion 22d is vertically bent and is erected.

  In other words, the feeder 22 is integrally formed with the first and second stoppers 22b and 22c and the guide protrusion 22d by bending by sheet metal pressing or the like.

  Next, the operation of the nailing machine 1 configured as described above will be described with reference to FIG.

  When nailing the workpiece to be driven W shown in the figure, the connecting nail 5 is loaded into the magazine 6 as shown in FIG. 2, and an air hose (not shown) is connected to the air plug 4. Then, compressed air is supplied from the pressure supply source (not shown) such as an air compressor through the air hose to the pressure accumulating chamber S1 in the body 2 of the nailing machine 1, and a part thereof passes through the air passage (not shown). It flows into the control valve 9 and further flows into the head valve chamber S5 through an air passage (not shown).

  The compressed air that has flowed into the head valve chamber S5 causes the head valve 18 to be brought into close contact with the upper end of the cylinder 10 by the pressure to cut off the communication between the piston upper chamber S2 and the pressure accumulating chamber S1 in the cylinder 10, and the pressure in the pressure accumulating chamber S1. In order to prevent the compressed air from flowing into the piston upper chamber S2, the piston 11 remains stationary and no nailing operation is performed.

  Next, when both the pulling operation of the trigger 7 and the pressing operation of the push lever 21 against the workpiece W are performed, the plunger 8 in the control valve 9 is pushed up, and the compressed air in the head valve chamber S5 is not shown. It is discharged into the atmosphere through the air passage. Then, the head valve 18 is pushed up by the pressure of the compressed air in the pressure accumulating chamber S1, the cylinder 10 is opened, and at the same time, the piston upper chamber S2 in the cylinder 10 and the atmosphere are shut off. Since the piston 11 suddenly descends toward the bottom dead center due to the pressure of the compressed air, the magazine 6 moves from the magazine 6 to the injection port 20a of the injection unit 20 (see FIGS. 4 and 5). The supplied nail 5 a (see FIG. 2) is hit by the driver blade 12. Then, the nail 5a hit by the driver blade 12 is guided to the injection port 20a of the injection unit 20 and driven into the workpiece W. When the piston 11 descends in the cylinder 10 and reaches the bottom dead center, the piston 11 comes into contact with the piston bumper 13 and elastically deforms the piston bumper 13. Therefore, surplus energy is generated by the elastic deformation of the piston bumper 13. Is absorbed.

  Next, when the trigger 7 is returned to the original position or the push lever 21 is moved away from the driven material W, the plunger 8 returns to the original position, and the compressed air flows into the control valve 9 so that an unillustrated air passage is formed. Compressed air flows into the head valve chamber S5 and the head valve 18 moves to the bottom dead center, and the communication between the pressure accumulating chamber S1 and the piston upper chamber S2 in the cylinder 10 is cut off. The piston upper chamber S2 communicates with the atmosphere. Then, the piston 11 is pushed up in the cylinder 10 by the compressed air accumulated in the return air chamber S4, and the piston 11 suddenly moves to the top dead center. Accordingly, the compressed air in the piston upper chamber S2 in the cylinder 10 is discharged to the atmosphere through an air passage (not shown), and the piston 11 and the driver blade 12 return to the initial state shown in FIG.

  By repeating the above steps, the nail 5a of the connecting nail 5 loaded in the magazine 6 is continuously driven into the workpiece W.

  Next, the operation of the magazine 6 will be described with reference to FIGS.

  In the magazine 6, as shown in FIG. 2, the connecting nail 5 loaded in the magazine 6 is pressed toward the injection unit 20 by the feeder 22 biased by the spring 24, and the nail 5a as described above. When the driving operation is continuously performed, a large number of the nails 5a of the connecting nail 5 are sequentially supplied from the head one by one to the injection port 20a of the injection unit 20 and driven by the driver blade 12.

  Thus, when all the nails 5a in the magazine 6 are driven into the material to be driven W and the nails 5a are removed from the magazine 6, the first stopper 22b of the feeder 22 is ejected as shown in FIG. The movement of the feeder 22 is restricted to abut against the end face 20b of the 20, and the feeder 22 stops at a position where the tip end portion 22a protrudes from the injection port 20a of the injection portion 20 by a predetermined amount. In the feeder 22, the first stopper 22 b does not come into contact with the end surface 20 b of the injection unit 20 when the last remaining nail 5 a enters the injection port 20 a of the injection unit 20. Thus, the last nail 5a can be surely pressed by the tip 22a of the feeder 22, and the last nail 5a does not fall out of the injection port 20a. Further, after the last nail 5a is driven, the first stopper 22b comes into contact with the end surface 20b of the injection portion 20.

  By the way, in the present embodiment, since the two (plural) first stoppers 22b are provided on both sides of the spring 24, the tip 22a of the feeder 22 does not tilt within the injection port 20a (parallel). ) When the nail 5a is eliminated and the driver blade 12 is idle, the driver blade 12 can uniformly contact the tip 22a of the feeder 22, and the feeder 22 can be prevented from being damaged, and the feeder 22 and the driver blade 12 are worn. Can be reduced. If the first stoppers 22b are provided on both sides of the spring 24, these can be more effectively operated.

  When the magazine cover 6B is slid in the direction of the arrow (rear) in FIG. 5 with respect to the magazine body 6A to refill the next connecting nail 5 into the magazine 6 and the like, the second of the feeder 22 is opened. 5, the stopper 22c abuts against the inner surface 6c of the front wall of the magazine cover 6B, so that the feeder 22 is prevented from jumping out of the magazine cover 6B, and the feeder 22 slides together with the magazine cover 6B. Since the second stopper 22c of the feeder 22 is offset backward by e with respect to the first protrusion 22b as described above, the front end portion 22a of the feeder 22 e forwards from the front end surface of the magazine cover 6. Just jump out. In the present embodiment, the second stopper 22c is provided only at one place, but by providing two or more (a plurality), the feeder 22 slides on the spring 24 when the magazine cover 6B is opened. Since it does not tilt with respect to the moving direction, the feeder 22 can smoothly slide on the magazine cover 6B when the magazine cover 6B is closed after the connecting nail 5 is loaded into the magazine 6. If the second stoppers 22c are provided on both sides of the spring 24, these can be made to act more effectively.

  As described above, according to the present embodiment, when the nail 5a disappears in the magazine 6, the first stopper 22b of the feeder 22 is brought into contact with the end surface 20b of the injection unit 20 to thereby position the feeder 22. Even if the tip 22a of the feeder 22 is regulated so that the tip 22a does not protrude beyond the injection port 20a of the injection unit 20 by a predetermined amount or more and the blanking is performed (the driving operation is performed without the nail 5a), Since the driver blade 12 abuts against the inclined surface 22e of the hood 22, the feeder 22 moves backward in the magazine 6 (rightward movement in FIG. 1). For this reason, a large load is not applied to the feeder 22, and the feeder 22 is prevented from being damaged. When the magazine cover 6B is slid with respect to the magazine main body 6A and opened, the second of the feeder 22 is prevented. The stopper 22c can be brought into contact with the inner surface of the front wall of the magazine cover 6B to prevent the feeder 22 from popping out. The first and second stoppers 22b and 22c that perform such a function are provided in the feeder 22, and these stoppers 22b and 22c are brought into contact with the existing injection unit 20 and the magazine cover 6B, respectively. New parts for bringing the first and second stoppers 22b and 22c into contact with each other are not required, and the position of the feeder 22 of the magazine 6 can be regulated without increasing the number of parts or the number of assembling steps.

  Further, since the feeder 22 is integrally formed with the first and second stoppers 22b and 22c, the structure of the feeder 22 is simplified and the molding thereof is facilitated.

  Although the present invention has been described with respect to an embodiment in which the present invention is applied to a pneumatic nailing machine, the present invention can be applied to electric and combustion nailing machines and the like in addition to the nailing machine. Of course, the present invention can be applied to other driving machines for driving fasteners such as pins and staplers.

It is a fracture side sectional view of a nailing machine concerning the present invention. It is the sectional view on the AA line of FIG. It is a rear view of a magazine cover. FIG. 3 is an enlarged detail view of a portion C in FIG. 2 showing a state when all nails have been driven (a view in which a part of a magazine cover is cut along a line DD in FIG. 3). FIG. 3 is an enlarged detail view of a portion C in FIG. 2 showing a state when the magazine cover is opened (a diagram in which a part of the magazine cover is cut along line EE in FIG. 3). It is a perspective view of a feeder. It is a fragmentary sectional view of the magazine part of the conventional driving machine.

Explanation of symbols

1 Nailer (driving machine)
2 Body 3 Exhaust cover 4 Air plug 5 Connection nail (connection stop)
5a Nail (fastener)
6 magazine 6A magazine body 6B magazine cover 6c inner surface of front wall of magazine cover 7 trigger 8 plunger 9 control valve 10 cylinder 11 piston 12 driver blade 13 piston bumper 14 partition 15, 16 air hole 17 check valve 18 head valve 19 spring 20 injection Part 20a Injection port 20b End face of injection part 21 Push lever 22 Feeder 22a Feeder tip 22b First stopper 22c Second stopper 22d Guide protrusion 22e Feeder slope 23 Pressing member (feeder piece)
24 Spring S1 Pressure accumulating chamber S2 Piston upper chamber S3 Piston lower chamber S4 Return air chamber S5 Head valve chamber W Material to be driven

Claims (5)

  A driver blade that reciprocates to hit the stopper, an injection portion having an injection port for guiding the driver blade and the stopper, and a plurality of stoppers loaded therein are sequentially supplied to the injection port of the injection portion. The magazine includes a magazine main body attached to the injection unit, a magazine cover provided on the magazine main body so as to be openable and closable, and a slidable provided on the magazine cover so as to attach a stopper to the injection unit. In the driving machine including a feeder that biases toward the injection port side, the feeder is provided with a first stopper that contacts the end surface of the injection portion and a second stopper that contacts the inner surface of the front wall of the magazine cover. A driving machine characterized by that.   The first stopper comes into contact with the end face of the injection portion when the stopper is lost in the magazine, and the second stopper is opened by sliding the magazine cover with respect to the magazine body. 2. The driving machine according to claim 1, wherein the driving machine is in contact with the inner surface of the front wall of the magazine cover.   3. The driving machine according to claim 1, wherein the feeder is integrally formed with the first and second stoppers.   The driving machine according to claim 1, wherein a plurality of the first stoppers are provided.   The driving machine according to claim 1, wherein a plurality of the second stoppers are provided.

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