TW200932447A - Driving machine - Google Patents

Abstract

According to an aspect of the present invention, there is provided a driving machine including: a driver blade for striking a fastener; and a nose portion having formed therein an injection passage which slidably guides the driver blade, and into which the fastener is fed to be injected therefrom, wherein an injection hole from which the fastener is injected is specified at a leading end in an injecting direction of the injection passage, wherein the injection hole being defined by a first guide portion and a second guide portion which is movable relative to the first guide portion so as to change a cross section, perpendicular to the injecting direction, of the injection hole, and wherein a disposing means is provided to dispose the second guide portion at a plurality of positions relative to the first guide portion.

Description

200932447 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a drive machine. The present application is based on the prior Japanese Patent Application No. 2008-109287, filed on Sep. 13, 2007, which is hereby incorporated by reference. The entire disclosure of the above-identified patent application is incorporated herein by reference. [Prior Art]

Generally, a drive machine is known in which a fastener (e.g., a nail) is struck by a driver against a needle bar to drive the nail into wood or the like. In this drive machine, the drive strikes the needle bar by using compressed air, fuel (such as gasoline), a motor or the like as its power. In this drive machine, a fastener is provided in the injection passage in which the drive slides, and a fastener located in the injection passage is struck by the driver striking the needle bar to eject the fastener - in the exit passage - the injection at the front end

Suitable for driving by this! I strike the needle bar to drive the nail out of the drive hole of the injection hole. 'In the main part of the drive machine, the reaction of the driver strikes the needle bar 2, which occurs. The drive machine is opposite to the drive of the fastener. The direction of the movement #夕 A, _, 乍 phenomenon. Due to this reaction, the one of the torsion edge portions in which the front end portion moves forward is generated while the fastener is ejected from the exit hole, and the nail can be in the torque state, thereby the tomb wire "brother" The lower nail is undesirably driven into the slanted and defective nailing finish. Especially in the case of a needle with a small head 134007.doc 200932447 straight and short shank length, because the nail is in the injection hole ten The inclination angle becomes large, so the tendency of the nail to be driven into the inclined state becomes large. ❹ ❹ In order to prevent this phenomenon, as shown in JP-2004-330372-A, the structure of the structure is revealed, which has - and is used The guide member of the fastener having the same size is attached to the front end of one of the leading edge portions, and the guide member is replaced according to the application. Further, as shown in JP-2004-330366-A, the structure is A rotatable guiding member having an inclined surface defined thereon to guide the front end of the fastener to the center of the ejection hole is disposed at a portion where the leading edge portion exits the hole. ^ 2〇〇4_33〇372-A Structure, fasteners can be Properly held so as to be able to drive in, but there is still a problem, because the guiding member is moved during operation, and the removed guiding member can be lost. ^ΉΡ·2ϋ04-330366-ΑStructure's because the guiding member is located in the driver impact pin On the sliding path of the rod, 'Whenever the fastener is driven, the guiding member is always subjected to an impact force provided by the driver striking the needle #, so that it is difficult to ensure the durability of the guiding member. [Explanation] - Therefore, one of the present invention The object is to provide a driving machine in which a fastener can be held by 74 to be driven in order to be driven in, and durability is improved. In order to overcome the above problems, according to the present invention, a driving machine is provided, which comprises: a driver striking a needle bar a 前 撞击 扣 扣 扣 扣 扣 扣 扣 ; ; 扣 ; 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣 扣200932447 The injection hole for injecting the fastener is located at a position along the two ends of the injection passage, wherein the injection hole is defined by a --guide member and a second segment, the first The second guiding portion may be opposite to the cymbal to change the (four) 2 of the exiting hole perpendicular to the (four) outgoing direction: providing a setting member to guide the second guiding relative to the first guiding portion to the second:: motive The setting member is placed further than the ▲ p knife 5, wherein the second guiding portion is not dry

The drive strikes the position of the needle bar. The cut of the exit hole prevents the drive from being formed according to the above configuration, and the exit hole adapted to the size of the fastener to be driven by changing the face can be formed. At this time, the striker strikes the needle bar abutting on the second guiding portion. Further 'preferably' a plurality of fasteners are provided and the staples g adapted to provide the fasteners to the ejection channel are connected to the leading edge portion, and the setting member is configured to be along the nail Reciprocatingly moving the second guiding portion a in the direction of the ejection channel, and configured to change an area of the carrier surface according to the direction in which the second guiding portion has moved from the nail s toward the ejection channel The above configuration 'the direction in which the fastener is moved from the nail E to the ejection channel 2 and the moving direction of the second guiding portion are substantially different from each other, so that the area of the section can be made smaller by a simple configuration. . In addition, the second guiding portion knife is mounted so as to be rotatable about an axis perpendicular to the direction of the ejection and the direction perpendicular to the direction of the ejection channel, and the member can be configured to include: a spring And rotatably urging the second guiding portion to divide the second guiding portion 134007.doc 200932447 with the first guiding portion to modify the area of the section: The two guiding portions and the guiding portion are constrained by the #spring ("knife, which abuts between the second guiding first guiding portion = the second guiding portion and the first I: square two first guiding The portion may have a (four) (four) minute extending from the nail 11 toward the exiting direction, and the (four) (four) member may be provided to the leading edge member and the crucible by including a mouth holding knives &

One of the magazines is adapted to be capable of holding the holder portion in the direction from the magazine toward the ejection passage and to fix the held portion to an arbitrary position. According to one of the above configurations I, tl r, the first guiding portion can be fixed at a plurality of positions with respect to the first guiding portion. According to the driving machine of the present invention, the fastener can be appropriately held so as to be able to be condensed and the durability is improved. [Embodiment] Referring now to Figures 1 to 5, a driver according to an embodiment of the present invention will be described. A nailing machine 1 (which is shown in Fig. 1 and is a driver) is a machine for driving a series of fasteners 10 (Figs. 2 and 4) and using compressed air as its power. In the nailing machine 1, a frame 2, a handle 2A on one side of the frame 2, and a leading edge portion 3 on the lower end of one of the frames 2 are integrally provided. In order to accumulate compressed air from the unillustrated compressor, a accumulation chamber 2a is formed in the handle 2A of the needle driver 1 and the frame 2. The accumulation chamber 2a is connected to the compressor via an unillustrated air manifold. 134007.doc 200932447 A cylinder 5 having a hollow cylindrical shape is provided in the frame 2, a piston 4A is provided in the cylinder 5 so as to be vertically slidable, and a driver strikes the needle bar 4B integrally formed with the piston 4A. The direction in which the driver strikes the needle bar 4B and the piston 14A to move is defined as an outgoing direction. A return air chamber 5a for accumulating compressed air to return the driver to the needle bar 4B to a top dead center is formed in an outer periphery of one of the lower ends of the steam rainbow 5, and the check valve 5A is provided to one of the cylinders 5 toward the center portion and One for

The air passage 5b of the air is accumulated only in the direction from the inside of the cylinder 5 to the return air chamber 5a outside the cylinder 5. Further, an air passage 5c always leading to the return air chamber 5a is formed below the cylinder 5. Further, a piston valve 6 for absorbing excess energy of the piston 4A after driving the nail 10 is provided at the lower end of the cylinder $. The column members are provided along with the other members in a proximal portion of the handle 2: - triggering the urn by the operator; - the arm plate 13, which is assembled to the trigger 12 in a rotatable manner; - the push rod 14, Extending from the leading edge portion to the vicinity of the arm plate 13 can be moved along the leading edge portion 3 by pushing from the frame 2 toward the leading edge side; - the trigger valve portion 15, which is described as the main reading 42. The rotary valve portion 15 is adapted to supply and discharge compressed air. The poem transmits the operation of the arm plate 13 to the trigger. It is well known that when the index of the trigger 12 is implemented relative to an operation and the push rod, the plunger 16 of the trigger valve portion 15 is used. The arm plate 13 and the triggering mechanism of the trigger 12 are advanced upward. The following components are provided on the periphery of one of the upper sides of the cylinder 5, 134007.doc -12·200932447, together with the other components on the top of the cylinder. The main valve 42 is used to accommodate the main a valve 42; a main valve spring 44 for urging the main valve 42 toward the dead center side; and a vent rubber 46 disposed on one of the upper sides of the cylinder 5 and being cut by abutting against the main valve 42 The air passage 45 is broken to discharge the compressed air in the upper chamber of one of the pistons 4A of the cylinder 5. In addition, the air passage 45 communicates with the atmosphere via an unillustrated exhaust port provided in an upper portion of the frame 2. As shown in Fig. 2, the leading edge portion 3 is formed by including a first guiding portion 31. The first guiding portion 31 is located at a lower end of the frame 2 and is parallel to a sliding direction of the driver striking the needle bar 4B. The direction extending. A nail unit 21 having a bundle of nails 1 entangled and coupled together is provided on one of the following injection passages 31a corresponding to one of the leading edge portions 3; On the side (the right side in Figure 3). The first guiding portion 31 is not shown The bolt is fixed to the frame 2, and the injection passage 31 serves as a portion in which the driver strikes the needle bar 4B and is a portion from which the nail 22 is fed into the nail 1〇. This injection passage 3 is shown in Fig. 1a is configured such that its cross section perpendicular to the direction in which the driver strikes the needle bar 4B is substantially U-shaped, and the substantially dome-shaped portion is oriented from the first guide portion 31 toward the side of the pin 22 (Fig. 2). . Further, at the end position of the /σ first bow portion 31 in the exit direction, the pair of adjacent surfaces 适于 adapted to abut on the second guide portion 32 are respectively assigned to the branch corresponding to the approximate portion The position of the end face of the leg portion is as shown in FIG. Further, the injection hole 31b through which the nail U) is ejected is designated at a position corresponding to one of the end portions of the ejection passage 31a as shown in FIG. 2. 134007.doc • 13· 200932447 The second guiding portion 32 pivotally supported by a rotating shaft portion 33 is provided at the front end position of the first guiding portion 31, that is, provided corresponding to the substantially U-shaped portion. The position of the open side position. A rotary shaft portion 33 pivotally supporting the second guide portion 32 is provided in the magazine 22, and its rotation axis is along a direction opposite to the exit direction and the substantially U-shaped portion (from the first guide portion 31 toward The direction in which the pin 22 is oriented is extended in a substantially vertical direction. The second guiding portion 32 is configured by a guiding portion 32A that cooperates with the first guiding portion 3 to define the injection hole 31b and an abutting portion 32B abutting on one of the cam 34 and a spring 35 which will be described later. The shape is pivotally supported by the rotating shaft portion 33 at one of the connecting portions of the one shape. As shown in Fig. 3, a guiding surface 32C (which cooperates with an inner surface of one of the first guiding portions) defines an ejection hole 31b (Fig. 2) and an ejection passage 31a) formed in the guiding portion 32. As shown in Fig. 3. It is to be noted that the guide surface 31C in the cross section perpendicular to the exit direction is configured to have a curved shape in the same manner as the curved portion of the first guide member 31; the pair is intended to abut. The surface 32D (which abuts on the surface 31a) is provided at a position close to the guiding surface 32C, that is, at a position opposed to the corresponding abutment surface 31A. As shown in Fig. 3, the guiding surface The 32C and the surface 32D to be abutted are configured such that the ejection hole 3 lb defined by the guiding surface 32C and the inner peripheral surface of the first guiding portion 31 does not interfere with the driver when the abutting surface 31A abuts against the abutting surface 32D. The needle bar 4B is struck. With this configuration, when the driving driver hits the needle bar buckle, the driver strikes the needle bar 4B and the second guiding portion 32 to abut each other, thereby improving the resistance of the nailing machine 1 134007.doc • 14 *· 200932447 Long. Adjacent part 32B is pushed downward by the spring 35. Therefore, the second guiding portion 32 is urged clockwise in the plane of the continuation shown in Fig. 2, that is, to cause the guiding surface 32C to enter the substantially U-shaped interior of the first guiding portion 31, and The abutment surface 31A abuts against the abutting surface 32D. Further, the cam 34 is provided at a position opposed to the spring 35 such that the abutment portion 32B is located therebetween. The cam 34 is configured such that its outer periphery is composed of one The circular arc cam surface 34a ❹ and a flat cut surface 34B are formed in a semicircular shape, and the cam "abuts against an opposite surface of the abutting portion 32B so that the spring 35 abuts on the surface thereof. Since the distance from the rotating shaft portion 33 to the cam 34 is larger than the distance from the rotating shaft portion 33 to the spring 35, the spring 35 can be easily compressed according to the lever principle by rotating the cam 34 to move the abutting portion 32B upward. Further, the distance from the rotating shaft portion 33 to the guiding portion 32A is substantially equal to the distance from the rotating shaft portion 33 to the spring 35. A setting member for arranging the second guiding portion 32 at a plurality of positions with respect to the first guiding portion 3 is formed by the cam ❿ 34, the spring 35, and the abutment surface 31A. When the cam 34 is rotated from the state shown in FIG. 2, the cam surface 34 abuts against the abutting portion 32B, so that the abutting portion 32B moves counterclockwise in the plane of the drawing against the urging force of the spring %, as shown in the figure. Shown in 4. Together with this movement of the abutting portion 32B, the guiding portion 32A is moved to be spaced apart from the first guiding portion 31, and the carrying surface area of the ejection hole 311) becomes large. Further, a -contact member 14B (which is continuously formed by the push rod 14 and capable of abutting against the stapling member) is provided at a front end in the exit direction of the leading edge portion 3, that is, at the first guiding portion 31. And one of the guiding portions 32A is located at 134007.doc -15-200932447. The magazine unit 21 is provided with a nail feeder 23 for feeding the inside of the nail __ - for continuously feeding the nail 1 装载 loaded in the nail (four) into the injection passage. According to this configuration, the direction in which the nails 1 from the nails (four) # move to the ejection passages 31a and the guide portions/minutes in the second guiding portions 32 substantially coincide with each other. Therefore, the area of the exit hole 3 can be changed by a simple configuration. ❹ In the case where the nail is struck by the nailing machine having the above configuration, the operation interaction of the driver striking the needle bar in the nailing machine i occurs, thereby appearing - wherein the nailing machine 1 is opposite to the shooting direction The phenomenon of direction operation. Due to this interaction, while the nail is ejected from the exit hole m, the torque for moving the front end portion of the leading edge knife 3 forward (in the direction from the nail unit 21 toward the leading edge portion 3) is generated. The front portion of the needle 1 可 can thus be tilted by coupling the torque to the forward movement of the front end portion of the leading edge portion 3. Therefore, in the case where the nail is a small nail, the cam 34 is rotated to a position where the cut surface 34B is opposed to the abutting portion 32B to set the cam surface 呈 in a state in which it is not adjacent to the abutting portion 32B. As shown in FIG. 2, and the abutting-surface 31A abuts against the surface to be abutted, as shown in FIG. 3, whereby the guiding surface 32C approaches the inner surface of the first guiding member 31 and is reduced. The cross-sectional area of the injection hole 31b. By adopting such a shape, it is possible to reduce the inclination angle of the nail 10 near the front end of the injection passage 3U when driving the nail 1 having the length of the head and the length of the handle, so as to prevent the nail iq from being driven when it is driven. The head is tilted forward to prevent flaws. On the other hand, in the case where a large nail is driven, if the cross-sectional area of the hole 134007.doc -16-200932447 hole 31b is still small, the nail head can collide with the bow guide surface 32C during the injection of the nail, thereby It may cause damage to the surface of the bow surface. If the guiding surface is damaged, when the nail ι is guided to the shooting hole 2 by sliding on the guiding surface 32C, the front end portion of the nail 1 〇 t may be caught at the damaged portion of the guiding surface 32C. Therefore, as shown in FIG. 4, the cam 34 is operated to rotate to abut the cam surface 34A against the abutment portion 32B to move the adjacent nipple 7B against the urging force of the spring 35, thereby making the cross-sectional area of the injection passage 31a. It becomes larger and the exit hole 31b is widened as shown in FIG. In this state, the center of the wearing surface of the needle striking the needle bar 4B (the center of the driver striking the needle bar 4B in Fig. 5) which is perpendicular to the sliding direction is set to be in a state of being offset from the center of the widening hole. Therefore, the occurrence of damage caused by the nail head resting on the guide surface 32C is suppressed in the case where a large nail is used, so that a stable nail supply can be maintained. In the first embodiment, in the cam 34, the position of the leading portion 32A of the second guiding portion 32 is assigned to two positions, including a position close to the first guiding portion 31 and a first guiding portion. 31 spaced apart positions. However, the present invention is not limited thereto, and the position of the guiding portion 32A of the second guiding portion 32 can be assigned to a plurality of positions by using a cam 丨 34 (e.g., a cam shown in Fig. 6A). In particular, in addition to a cam surface 丨 34D, the cam 134 is further provided with a first cut surface 134, a second cut surface 134B and a third cut surface 134C' which are three from a central axis of rotation G. Different surfaces. As shown in FIG. 6 to 6D, the position of the guiding portion 32 can be converted by the top surface of each of the three surfaces 134 to 134, 134007.doc 200932447 (abutting the adjacent portion 32B) The upper part) and the cam surface 134D are limited to four positions. Further, as shown in Figs. 7A and 7B, the position designation of the abutting portion 32B can be carried out by using a shift lever 234 instead of the cam. Specifically, in the magazine 22, a pin 234A is disposed at a position close to the abutting portion 32B, and the pin 234A is along a direction opposite to the exiting direction and the substantially U-shaped portion (from The first guiding portion 31 is moved in a substantially vertical direction toward each of the following directions. A notch 234a is formed in an outer peripheral portion of the pin 234A, and a continuous inclined surface 234B from the outer periphery of the pin 234A is provided on the inner surface of the notch 234a. When the notch 234a of the shift lever 234 is at an engaged position (Fig. 7A), the abutting σ 3 3 2B is pushed by the spring 35 into the notch 234a, and the leading portion 32A is brought close to the first guiding portion 31 in this state. If the shift lever 234 is moved from this state, the inclined surface 234B is adjacent to an inclined surface formed at a corner of the adjacent portion 32B, and the abutting portion 32B is opposite to the pushing force of the spring 35 from the inside of the notch 23乜 to the pin. One of the outer peripheral portions of 234A (Fig. 7B). In this state, the guiding portion 32 is in a state of being spaced apart from the first guiding portion 31. Further, as shown in Figs. 8A and 8B, a configuration in which one of the shift levers 334 is adapted to slide in the pushing direction of the spring 35 can be employed. The shift lever 334 is constituted by a pin 334A on the abutting portion 32B and a pair of arm portions 334B respectively provided at the two end portions of the pin 334A and gripping the nail portion. A ball 334C pushed by the magazine 22 and a spring 334D for pushing the ball 334C are provided in the arm portion 33A. The provided 134007.doc -18-200932447 is so arranged that the ball 334C is assembled in forming a recessed portion, and the position of the splicing portion 32b is determined. Although the shape of the ejection passage is changed by rotating the second guiding trowel in the first embodiment, the present invention is not limited thereto. For example, a configuration may be employed in which the second guiding portion is moved to be close to or spaced apart from the first guiding portion. In particular, the second guiding portion is provided with a held portion extending in a direction from the light 朝 toward the ejection passage. At the same time, the leading edge portion or the light is provided with a holding portion adapted to slidably hold the held portion in the direction from the nail to the exit passage and to fix the held portion at any position. By adopting this configuration, the second guiding portion becomes movable in the direction from the nailer toward the ejection passage so that the second guiding member can be brought close to or spaced apart from the first guiding portion and can be fixed at a predetermined Location. Next, a drive machine according to a second embodiment of the present invention will be described with reference to Figs. 9 and 10'. A nailing machine shown in Fig. 1 is substantially identical to the nailing machine i of the first embodiment except for the edge member 403. Therefore, as for the configuration other than the leading edge portion 403, 400 will be added. = to the reference number of the nailing machine 1, and the description thereof will be omitted. A leading edge portion 403 is constructed by a first guiding portion 431 including a lower end of the frame 402 and extending in a direction parallel to the sliding direction of the driver strike needle bar 4G4B. The first guiding portion 431 is constructed by including a trunk portion 432 and a sub-dry portion 433. The dry trowel 43 2 is fixed to the frame 402 by bolts not shown, and a 134007.doc -19-200932447 main injection passage 432a (which is a portion in which the driver strikes the needle bar 4〇4B and a self-nail The portion to which the crucible 422 feeds the nail is formed. In the same manner as the injection passage 31 of the first embodiment, the main injection passage 432a is formed at a position in which the cross section perpendicular to the direction in which the driver strikes the needle bar 4 is substantially U-shaped. The field 1J dry portion 433 is disposed on the front end side of the trunk portion 432, that is, at the distal end position of one of the nail driving machines 401, and is configured to be opposite to the main portion 432. The sliding direction of the rod 404 moves in the direction of the flat stroke. Further, the sub-dry portion 433 is coupled to a push rod 414. Thus, 'moving (upwardly moving in the plane of the map shown in FIG. 9) the sub-dry portion 433 to advance toward the stem portion 432 pushes the push rod 414' upward so that a plunger 416 can be actuated according to the push rod 414 It works as it works. The sub-dry portion 433 is constructed in the same manner as the trunk portion 432 to have a substantially U-shaped cross section, and the sub-ejecting passage 433a communicating with the main ejection passage 432a is formed at this substantially U-shaped portion. An ejection hole 433 433b from which the nail is ejected is designated at a position corresponding to the endmost portion of the sub-ejecting passage 433a. Therefore, the nail fed into the main injection passage 43 2a is struck by the driver. The needle bar 404B is forced to pass through the main injection passage 432a and the sub-ejection passage 433a, and is ejected from the injection hole 433b. As for the portion of the sub-dry portion 433 which is close to the ejection hole 433b, a structure which is substantially equivalent to the structure (the abutment surface 31A and the like) which is close to the ejection hole 31a of the first guiding portion 31 in the first embodiment is employed. . The end portion defining the ejection hole 433b in the sub-dry portion 433 serves as a portion adjacent to a stagnation member. Therefore, nailing can be performed by applying the 134007.doc • 20·200932447 end portion of the sub-dry portion 433 to the stapling member to press the nail pushing plunger 416'. Since the two portions of the secondary trunk portion only define the injection hole 433b, the secondary trunk portion 3 is configured to be comparable to the front end portion of the nailing machine according to the first embodiment: thus, with the nailing machine according to the first embodiment Comparison: The machine can be suitably applied to the nailing member as well. Knife

Further, the sub-dry portion 433 is provided with a plate which extends in the direction from the sub-dry portion 433 toward the trunk portion 432 and along the direction from the sub-dry portion 433 toward the nailsmith 22 and is disposed in parallel with the exit direction. - The second guiding portion 435 (which is pivotally supported by the -rotating shaft portion) is provided at a portion corresponding to the opening side position of the substantially (10) material of the plate 434. The axis of rotation of the rotating shaft portion of the second guiding portion 435 is pivotally supported in a direction substantially perpendicular to each of the direction in which the exiting direction and the substantially U-shaped portion are oriented. The second guiding portion 435 is constructed by a guiding portion 43 5A that cooperates with the sub-dry portion 433 to define the ejection hole 43 3b and a contiguous portion 435B that is responsive to one of the cam 437 and the spring 438 which will be described later, and It is pivotally supported by the rotary shaft file 436 at a substantially intermediate portion between the guide portion 435A and the abutment portion 435B. In the guiding portion 435A, a configuration similar to that of the guiding portion 32A of the first embodiment is employed. Therefore, the configuration is provided such that the exit hole 433b defined by the second guiding portion 435 and the sub-dry portion 433 does not interfere with the driver striking the needle bar 4〇4B. With this configuration, when the driving driver hits the 134007.doc -21 · 200932447 needle bar 404B, the driver strikes the needle bar 4〇4B and the second guiding portion 435 to abut each other, thereby improving the durability of the nailing machine 4〇1. . When the abutment portion 435B is pushed by the spring 438, the second guiding portion 435 is urged clockwise in the plane shown in the figure in the same manner as the first exemplary second guiding portion 32. In addition, the cam 437 is provided at a position opposed to the spring 438 such that the abutment portion 435B is located therebetween. The cam 437 is provided with a cam surface 437A and a flat cut surface 437b, and adopts a configuration equivalent to the configuration of the cam 34 according to the first embodiment. Therefore, by rotating the cam 437, the spring 438 can be easily compressed to rotate the second guiding portion 435 in the counterclockwise direction to move the guiding portion 435A to be spaced apart from the sub-dry portion 433, thereby making the cross-sectional area of the ejection hole 433b larger. . Therefore, in the same manner as the nailing machine 1 according to the present invention, the size of the ejection hole 433b can be changed in accordance with the size of the nail to be driven, thereby maintaining a stable nail supply. It should be noted that it is self-evident that in the above-described nailing machine 401 according to the second embodiment, a modification similar to the modification of the first embodiment can be employed for the cam. The driving machine according to the present invention is not limited to the above. The embodiments are susceptible to various modifications and alterations, which are still within the scope defined by the scope of the invention. For example, although a pneumatic nailer has been mentioned in the above embodiments, the present invention is also applicable to, for example, a combustion type drive using a fuel and a motor-operated drive machine using a motor or the like. BRIEF DESCRIPTION OF THE DRAWINGS The embodiments of the present invention have been described in detail above based on the following figures, in the drawings: 134007.doc -22-200932447: FIG. 1 is a section of a drive machine of the first embodiment of the present invention. Figure 2 is a detailed sectional view of a leading edge portion and its vicinity when the small nail is driven by the driving machine according to the first embodiment of the present invention; Figure 3 is a first embodiment of the present invention a cross-sectional view of the first nail and the second guiding portion when the small nail is driven by the driving machine, taken along a direction perpendicular to the direction in which the oblique direction is emitted;

Figure 4 is a detailed sectional view of the edge portion and its vicinity when the large nail is driven by the drive machine according to the first embodiment of the present invention; Figure 5 is a large embodiment of the present invention according to the first embodiment of the present invention. a cross-sectional view of the first guiding portion and the second guiding portion taken along the direction perpendicular to the exit direction when the nail is driven by the driving machine; FIGS. 6A to 6D are driving machines according to the first embodiment of the present invention Figure 7A and Figure 7 are diagrams according to a first modification using a shift lever instead of the cam of the drive machine according to the first embodiment of the present invention; Figures 8 and 8 are based on a BRIEF DESCRIPTION OF THE DRAWINGS FIG. 9 is a cross-sectional view of a first embodiment of a drive machine according to a second embodiment of the present invention; and FIG. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a detailed sectional view showing a portion of a front edge portion of a driving machine and a vicinity thereof according to a second embodiment of the present invention. [Main component symbol description] G Center rotation axis 134007.doc -23- 200932447

1 nailer 2 frame 2A handle 2a accumulation chamber 3 leading edge part 4A piston 4B drive impact needle bar 5 cylinder 5A check valve 5a return air chamber 5b air passage 5c air passage 6 piston valve 10 nail 12 trigger 13 arm plate 14 Push rod 14A Piston 15 Trigger valve portion 16 Plunger 21 Nail unit 22 Nail 22a Recessed portion 23 Feeder 134007.doc • 24-200932447 31 Injection channel 31A Abutment surface 31a Injection channel 31b Ejector L 32 Second guide Portion 32A Guide portion '32B Abutment portion 32C Guide surface 32D Surface 33 Rotation shaft portion 34 Cam 34A Arcuate cam surface 34B Flat cut surface 35 Spring 42 Main valve Φ 43 Main valve chamber 44 Main valve spring 45 Air passage 46 Exhaust rubber 134 cam 134A first cut-off surface 134B second cut-off surface 134C third cut-off surface 134D cam surface 134007.doc • 25- 200932447 234 shift lever 234A pin 234B inclined surface 234a notch 334 shift lever 334A pin ' 334B arm portion 334D spring ® 334C Ball 401 Nailer 402 Frame 4 03 leading edge portion 404B driver strikes needle bar 414 push rod 416 plunger 〇 422 pin 431 first guiding portion 432 trunk portion 432a main exit channel 433 sub-dry portion 433a sub-ejection channel 433b ejection hole 434 plate 435 second guiding portion 134007 .doc -26- 200932447 435A Guide portion 435B abutment portion 436 Rotary shaft portion 437 Cam 437A Cam surface 437B Flat cut surface 438

134007.doc 27-

Claims (1)

200932447 X. Patent application scope: 1. A driving machine comprising: 1 edge portion 'where the cattle slides the material and the driver strikes the needle bar = f, the injection channel can be ejected therefrom, and the fastener is fed therein Wherein the exit channel of the exit channel 射 射 the exit hole of the fastener, n is specified at the front end of the n for the exit hole to be defined by - first, the second lead (four) eight "B" and - second The material portion guide is movable relative to the first guiding portion to change a cross section of the ejection hole perpendicular to the exiting direction, and it is configured to provide a member to be disposed relative to the first guiding portion The first guiding portion is disposed at a plurality of positions. 2. The drive of claim 1, wherein the setting member sets the second guiding portion to a position where the second guiding portion does not interfere with the needle of the driver.驱动干丁 3. The drive machine of claim 1 wherein the leading edge portion is coupled with a plurality of fasteners therein and formed to supply the fasteners to the magazines in the ejection channel and wherein The setting member is configured to reciprocally move the second guiding portion in a direction from the (four) toward the ejection passage, and configured to move the second guiding portion in the direction from the nail S toward the ejection passage At this time, the area of the carrier surface is made small. 4. The driver of claim 3, wherein the second guiding portion is screwed around an axis perpendicular to the direction of the exiting direction and the direction from the 134007.doc 200932447 to the exit channel, and The setting member is configured to include: a spring that reversibly pushes the second guiding portion to be associated with the guiding knife in a state in which the first: rotatable first guiding portion is approached The area in which the second cross section is moved in the approaching direction becomes smaller. ΒΒ #刀, and ... change, and - the restricting portion, which abuts on the guiding portion to limit II ά β π # Α * % The second r remaining is the distance between the 提供 ❹ provided by the spring and the first guiding portion. The first guiding portion 5. The driving machine of claim 3, wherein the second guiding portion Having a retaining portion extending in the direction from the direction, wherein the retaining portion is configured to include a solid portion provided to the leading edge portion and one of the nails E/knife' Holding the retained portion from the staple and forming it into Slidably held § Λ in the direction of the exit channel. Symbol 4 is fixed at any 134007.doc