JP5125844B2 - Stapling nailer - Google Patents

Description

  The present invention relates to a nailing machine for stapling provided with a magazine for supplying staples to an injection port of a main body of a nailing machine when staples are driven mainly into wood by a nailing machine in fields related to architecture and civil engineering.

  In general, the nailing machine for stapling is provided with a magazine for storing connected staples and sequentially feeding them from the leading staple to the ejection port. A staple guide is disposed at the center of the magazine, and the linked staples are loaded so as to straddle the staple guide.

  In order to send the connected staples to the ejection port, a pusher is engaged with the rear end of the linked staples, and the pusher presses the linked staples toward the ejection port and feeds them.

  By the way, the pusher is urged so as to always move to the injection port side by a spring, but the urging method uses a constant output spring (see Patent Document 1) or two coil springs (Patent) Document 2) is known.

The constant output spring is expensive, and those using two coil springs have two coil springs arranged in parallel on the left and right. And these coil springs are comprised so that the lower part of a pusher may be pressed. The reason is that when the upper part of the pusher is pressed, the upper part of the pusher moves forward and the lower part tends to tilt so that the crown of the staple hits the front wall of the injection port, but the leg tip approaches the magazine side. Will receive a lot of power. This force acts so that the staple legs come out of the ejection port when the staple in the ejection port is struck, so that buckling is likely to occur. Therefore, the lower part of the pusher is pressed by two coil springs.
JP 2000-263467 A No. 1-18299

  However, in a structure in which two coil springs are arranged in parallel on the left and right, the magazine becomes thick. As the magazine gets thicker, the operator looks at the tip of the nose that drives the staples through the magazine, so the visibility is not good, causing work efficiency to drop.

  Moreover, the operation in a narrow place was difficult.

  Further, since the two coil springs press the lower side of the pusher, the upper side tends to be inclined so as to escape from the side opposite to the pressing direction, that is, from the injection port. For this reason, the leading staple is easily tilted so as to be retracted from the ejection port. Therefore, when the driver strikes the crown portion of the staple, since the tip of the driver can strike only a part of the crown portion of the staple, the staple firing direction becomes unstable.

  The present invention provides a staple nailing machine having a magazine that solves the above problems, improves visibility and operability, and can stably push out staples by pressing the pusher in a balanced manner. Let that be the issue.

In order to solve the above-mentioned problem, the invention according to claim 1 is directed to a driver driven by a striking mechanism provided inside the nail driver main body, and an injection port for a nose portion provided at a lower portion of the nail driver main body. And a staple formed by bending parallel leg portions from both ends of the crown portion is supplied to the ejection port from a staple guide of a magazine provided at the rear portion of the nose portion, and is driven by the driver. In a staple driving nail driving device for driving a staple supplied to a nose portion downward, a plurality of elongated holes are vertically parallel to a staple guide for slidably holding a connected staple along a longitudinal direction of supplying the staple. The guide shaft is disposed in the front and rear of the elongated hole, a coil spring is disposed around the guide shaft, and one end of the coil spring is connected. Engages the rear end of the staple pusher, and urged to move the pusher into the injection port side, front and rear end of the guide shaft, and is fixed by a fixing means for preventing the movement up and down and left and right It is characterized by that.

  The invention according to claim 2 is characterized in that, in claim 1, the diameter of the guide shaft is equal to or smaller than the thickness of the staple guide.

According to a third aspect of the present invention, in any one of the first or second aspect , the end portion of the guide shaft and the end portion of the elongated hole are fitted to each other within the thickness range of the staple guide. It is characterized by that.

According to a fourth aspect of the present invention, in any one of the first to third aspects, the upper and lower portions of the end portion of the guide shaft are supported inside the notch groove formed in the inner surface of the end portion of the elongated hole. In addition, the left and right side portions of the end portion of the guide shaft are held inside a guide cover that is fixed to the rear end portion of the staple guide and covers a part of the staple guide.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, a pressing portion that presses the guide shaft from above and below is formed in the middle portion of the long hole.

  According to the first aspect of the present invention, a plurality of elongated holes are formed in the staple guide for holding the connected staples slidably in the vertical direction along the front-rear direction of supplying the staples. The guide shaft is arranged at the front and back, a coil spring is arranged around the guide shaft, one end of the coil spring is engaged with the rear end of the pusher of the linked staple, and the pusher is attached to move to the injection port side. Since the pusher is pressed in a balanced manner by the upper and lower coil springs, the connected staple can be supplied to the ejection port in a stable posture. Therefore, since the pusher does not tilt, the driver can hit the entire crown portion of the staple and stably drive it, and buckling can be prevented well.

  In addition, since the coil springs are arranged above and below, the thickness of the magazine can be reduced. Therefore, the driving portion can be clearly seen through the magazine, so that visibility is improved. Similarly, the staple can be driven in a narrow place, so that the operability is improved.

  Furthermore, since a plurality of long holes are formed in the staple guide, the meat corresponding to the long holes can be dropped, and the weight can be reduced.

Further, since the front and rear ends of the guide shaft are fixed by fixing means that prevent the guide shaft from moving vertically and horizontally, the stability of the guide shaft can be ensured.

  According to the second aspect of the present invention, since the diameter of the guide shaft is equal to or smaller than the thickness of the staple guide, the staple can be loaded into the staple guide without any trouble.

According to the invention of claim 3 , since the end portion of the guide shaft and the end portion of the long hole are fitted to each other within the thickness range of the staple guide, the end portion of the guide shaft is It can be mounted stably without shaking in both directions. In addition, it is only necessary to fit, and because it does not depend on welding or screwing, it is easy to assemble.

According to the fourth aspect of the invention, the upper and lower portions of the end portion of the guide shaft are supported inside the notch groove formed in the inner surface of the end portion of the elongated hole, and both the left and right sides of the end portion of the guide shaft. Is fixed to the rear end of the staple guide and is held inside a guide cover that covers a portion of the staple guide, so that the end of the guide shaft is notched with a long hole from either the left or right side. The guide shaft is fitted into the groove, and when the guide cover is attached, the left and right sides of the guide shaft are covered so that the end portion of the guide shaft does not rattle in the vertical and horizontal directions, and can be attached stably. Moreover, since it is not based on welding or screwing, it is easy to assemble.

According to the fifth aspect of the present invention, since the holding portion for pressing the guide shaft from above and below is formed in the middle portion of the long hole, it is ensured that the guide shaft bends upward or downward due to impact at the time of impact. Can be prevented.

  FIG. 1 is a perspective view of a nailing machine for stapling. In FIG. 1, a nose portion 2 is provided at a lower portion of a nailing machine body 1. A magazine 3 for storing staples is disposed behind the nose portion 2. The nail driver main body 1 is provided with a striking mechanism using air pressure as a drive source. However, these may be the same as those shown in Patent Document 1 and the like, and are omitted here. .

  As shown in FIGS. 2, 3 and 6, an elongated plate-like staple guide 4 is provided inside the magazine 3. The staple guide 4 is slidably accommodated in the longitudinal direction of the magazine 3, and the staple guide 4 is a connected staple s formed by adhesively connecting U-shaped staples formed by bending parallel leg portions from both ends of the crown portion. Is loaded so as to straddle. The front end of the staple guide 4 faces the ejection port 6 of the nose part 2, the connected staple is urged by the pusher 5 so as to always slide toward the ejection port 6, and the leading staple s 1 is moved to the ejection port 6 by the pusher 5. It is energized to be sent. Then, by pulling the trigger 7 in FIG. 1 to activate the striking mechanism, when the driver 8 is driven and slides in the ejection port 6 of the nose portion 2, the leading staple s1 in the ejection port 6 is removed. When the driver 8 is struck to strike from the lower end of the nose portion 2 and the driver 8 is lifted after the firing, the next leading staple s is sent out to the ejection port 6 by the pusher 5.

  By the way, the nose portion 2 includes a fixed nose portion 2a fixed to the lower portion of the nailing machine body 1 and a contact nose 2b provided below the fixed nose portion 2a so as to be slidable in the driving direction. Since only the driver 8 is slidably accommodated in the portion 2a, the cross section of the fixed nose portion 2a is also formed along the outer shape of the driver 8.

  As shown in FIG. 4, the injection port 6 of the nose portion 2 that faces the magazine 3 is formed in a substantially concave shape in cross section, and the upper portion of the opening is arranged to face the tip of the staple guide 4 of the magazine 3. As a result, the leading staple s1 of the linked staple s held by the staple guide 4 can be fed into the ejection port 6 beyond the leading end of the staple guide 4.

  The contact nose 2b is always spring-biased so as to protrude downward, and is triggered only when the tip is pushed against the driven material and moved upward relative to the nailing machine body 1. The safety device is configured so that the operation of is effective.

  As shown in FIG. 3, the staple guide 4 is fixed to the upper portion of the slider 10, and the slider 10 is slidably engaged with the guide groove 11 of the magazine 3. By arranging the staple guide 4 in the center of the magazine 3, a U-shaped space is formed between the inner surface of the magazine 3 and the staple guide 4. The connected staple s is stored in this space.

  As shown in FIG. 7, the staple guide 4 is provided so as to be slidable in the front-rear direction together with the slider 10, and the support pin 13 provided in the magazine 3 is engaged with the guide hole 12 in the center of the staple guide 4. Yes. As a result, the staple guide 4 can slide back and forth within a certain range.

  When the linked staples s are loaded into the magazine 3, the staple guide 4 is slid backward as shown in the figure to make a space in the front of the magazine 3, and the linked staples are inserted into the magazine 3 from below, and the staple guide is inserted. What is necessary is just to load so that a connection staple may be straddled when sliding 4 forward.

  Next, the staple guide 4 is provided with an urging mechanism for the pusher 5. That is, as shown in FIGS. 2 and 4, the staple guide 4 has two (or more) long holes 14 parallel to the top and bottom of the central guide hole 12 along the front-rear direction of supplying staples. Is formed.

  Inside the long hole 14, a guide shaft 15 is disposed in the front-rear direction, and a coil spring 16 is disposed around the guide shaft 15. The rear end of the coil spring 16 is engaged with the end face of the long hole 14, and the front end is engaged with the rear end of the pusher 5 via a washer 17. As a result, the pusher 5 is always urged to move toward the injection port.

  The diameter of the guide shaft 15 is set to be equal to or smaller than the thickness of the staple guide 4 so that the staple can be loaded into the staple guide 4 without any trouble.

  The front and rear ends of the guide shaft 15 are fixed by fixing means for preventing the guide shaft 15 from moving up and down and left and right.

  That is, as shown in FIG. 5, a receiving hole 18 is formed in the front end portion 15 a of the guide shaft 15. On the other hand, a conical projection 19 projecting rearward is formed on the inner surface of the front end of the long hole 14. The protrusion 19 is fitted in the receiving hole 18 of the guide shaft 15. The diameter of the protrusion 19 is the same as or less than the thickness of the staple guide 4. According to this, the front portion of the staple guide 4 cannot move in any of the vertical and horizontal directions.

  Next, as shown in FIGS. 4 and 5, the rear end portion 15 b of the guide shaft 15 is fixed by the long hole 14 and the guide cover 20. A notch groove 21 is formed in the inner surface of the rear end of the long hole 14. The height of the notch groove 21 is formed substantially the same as the diameter of the guide shaft 15. The rear end portion of the guide shaft 15 is supported inside the notch groove 21. On the other hand, a guide cover 20 that covers a part of the staple guide 4 is fixed to the spring pin hole 9 at the rear end of the staple guide 4. A clamping piece 22 (see FIG. 4) for clamping the staple guide 4 from both sides is formed inside the guide cover 20, and the left and right sides of the guide shaft 15 are clamped and held together with the staple guide 4.

  When the guide shaft 15 is attached, the receiving hole 18 of the front end portion 15a is fitted to the projection 19 of the front end portion of the long hole 14, and then the rear end portion 15b of the guide shaft 15 is connected to the rear end portion of the long hole 14. It is only necessary that the right and left side portions of the guide shaft 15 are sandwiched and covered when the guide cover 20 is attached. Thereby, the said edge part of the guide shaft 15 does not rattle in the up-down direction or the left-right direction, and can be attached stably.

  As shown in FIG. 2, a presser portion 23 that presses the guide shaft 15 from above and below is formed in the middle portion of the long hole 14. At the time of driving, the guide shaft 15 bends upward and downward due to impact due to impact, so that the receiving hole 18 of the front end portion 15a of the guide shaft 15 may come off from the projection 19 of the long hole 14 when bent. However, it is possible to reliably prevent the guide shaft 15 from being bent at the front end portion by pressing the middle portion of the guide shaft 15 with the pressing portion 23.

  As described above, the urging mechanism of the pusher 5 forms a plurality of long holes 14 in the staple guide 4 in parallel in the front-rear direction in which staples are supplied, and a guide shaft is formed inside the long hole 14. 15 is arranged at the front and rear, a coil spring 16 is arranged around the guide shaft 15, one end of the coil spring 16 is engaged with the rear end of the pusher 5 of the connected staple, and the pusher 5 is moved to the ejection port 6 side. Therefore, the pusher 5 is pressed by the upper and lower coil springs 16 in a balanced manner. Accordingly, the connected staple can be supplied to the ejection port in a stable posture, and the pusher 5 does not tilt, so that the driver can strike the entire crown portion of the staple and stably drive, and the buckling is also good. Can be prevented.

  Further, since the coil springs 16 are arranged vertically, the thickness of the magazine 3 can be reduced. Therefore, since the driving portion can be seen well through the magazine 3, the visibility during driving is improved. Similarly, the staple can be driven in a narrow place, so that the operability is improved.

  Further, since the plurality of long holes 14 are formed in the staple guide 4, the meat corresponding to the long holes 14 can be dropped, so that weight reduction can also be achieved.

  Furthermore, since the front and rear ends of the guide shaft 15 are fixed by fixing means that prevent the guide shaft 15 from moving vertically and horizontally, the stability of the guide shaft 15 can be ensured.

  For example, since the front end portion of the guide shaft 15 and the front end portion of the long hole 14 are fitted to each other within the thickness range of the staple guide 4, the end portion of the guide shaft 15 is also left and right in the vertical direction. It can be attached stably without shaking in the direction.

  The upper and lower portions of the rear end portion 15b of the guide shaft 15 are supported inside a notch groove 21 formed in the inner surface of the rear end portion of the elongated hole 14, and the left and right sides of the rear end portion 15b of the guide shaft 15 are supported. Since both side portions are fixed to the rear end portion of the staple guide 4 and are held inside the guide cover 20 that covers a part of the staple guide 4, the rear end portion of the guide shaft 15 is from either the left or right side. The guide shaft 15 is fitted in the notch groove 21 of the long hole 14 and covers the left and right side portions of the guide shaft 15 when the guide cover 20 is attached, and the end portion of the guide shaft 15 rattles in the vertical and horizontal directions. There is no, can be attached stably.

  As described above, since fixing of the guide shaft 15 does not require welding or screwing, the assemblability is very good.

  Furthermore, since the holding portion 23 for pressing the guide shaft 15 from above and below is formed in the middle portion of the long hole 14, it is possible to reliably prevent the guide shaft 15 from bending upward or downward.

  The front end portion of the guide shaft and the front end portion of the long hole may be configured such that a protrusion is formed on the guide shaft and a receiving hole is formed on the long hole.

  Further, the number of long holes is not limited to two. Three may be sufficient.

  Furthermore, the front and rear ends of the guide shaft may be fixed to the long hole by a fixing means that prevents the guide shaft from moving vertically and horizontally, and is not limited to the above-described form.

Side view of one embodiment of a staple nailing machine Sectional view of the main part of the nailing machine Sectional view on the XX line of FIG. Sectional view on the YY line of FIG. Enlarged illustration of the coupling relationship between the guide shaft and the long hole A perspective view of the staple guide supported by the staples A perspective view of a state in which a space is formed in the front portion by sliding the staple guide backward.

s Linked Staple 1 Nailing Machine Body 2 Nose Part 3 Magazine 5 Pusher 6 Injection Port 8 Driver 14 Long Hole 15 Guide Shaft 20 Guide Cover

Claims (5)

A driver driven by a striking mechanism provided inside the nailing machine body is slidably guided to an injection port of a nose part provided at the lower part of the nailing machine body, and is parallel to both ends of the crown part. Staple nails for supplying staples formed by bending a leg portion to the ejection port from a staple guide of a magazine provided at the rear portion of the nose portion, and driving the staple supplied to the nose portion downward by the driver In the hitting machine,
A plurality of long holes are formed in the staple guide for holding the connected staples slidably along the front-rear direction of supplying the staples, and a guide shaft is disposed in the front and rear in the long holes. A coil spring is arranged around the guide shaft, one end of the coil spring is engaged with the rear end of the pusher of the connected staple, and the pusher is urged to move to the ejection port side ,
The stapler nailing machine according to claim 1, wherein the front and rear ends of the guide shaft are fixed by fixing means for preventing the guide shaft from moving vertically and horizontally .   2. The nailing machine for stapling according to claim 1, wherein a diameter of the guide shaft is equal to or smaller than a thickness of the staple guide. The staple driving nail according to claim 1 or 2 , wherein an end portion of the guide shaft and an end portion of the elongated hole are fitted to each other within a thickness range of the staple guide. Hammer. The upper and lower portions of the end portion of the guide shaft are supported inside a notch groove formed in the inner surface of the end portion of the long hole, and the left and right side portions of the end portion of the guide shaft are the rear ends of the staple guide. The staple driving nail driver according to any one of claims 1 to 3 , wherein the nailing machine is held inside a guide cover that is fixed to the portion and covers a part of the staple guide. The nail driving machine for stapling according to any one of claims 1 to 4 , wherein a pressing portion for pressing the guide shaft from above and below is formed in the middle portion of the long hole.

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