JPH0585570U - Posture control device for nails in nailer - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to accurately hold the last one nail in the nail feeding passage and supply the last one nail into the nail guide passage. A nail guide path formed in a driver guide mounted on the nailing machine main body and through which a driver for driving a nail is reciprocally inserted, and a row connected to the nail guide path and extending from inside the nail magazine. -Shaped nail feed passage for guiding the nails, nail feed pawl means for supplying the nails in the nail feed passage one by one into the nail guide passage, and the nail feed passage facing the nail feed pawl means. A nailing machine having a check claw means for preventing the inner nail from moving in a direction opposite to the supply direction, in the vicinity of the check claw means, a nail just before being supplied to the nail guide path. This is a configuration in which the second claw portion that supports the upper portion from the side is swollen.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention provides a nail striking device configured so that a nail in a nail magazine is supplied by a nail feeding claw means into a nail guide path of a driver guide through which a driver for driving a nail is inserted and the nail is driven by the driver. In a machine, the present invention relates to a nail posture control device for supplying up to the last one nail in a nail magazine into the nail guide path by the nail feeding claw means.

[0002]

[Prior Art]

 Generally, in this type of nail driving machine, the nails arranged in a row in the nail magazine are fed one by one into the nail guide path of the driver guide by the nail feeding nail means. In the nail feed passage, the nail immediately before being fed into the nail guide passage (the frontmost) is captured by the forward movement of the nail feed pawl means and the nail is fed to the nail guide passage side for one pitch in a row (forward). The first nail is fed into the nail guide path by the above, and when the nail feeding nail means is moved back, it is moved back over the next nail, so that the nail is not retracted in the direction opposite to the feeding direction. In addition, the non-return pawl means holds it while blocking it, and the above operation is linked to the driving operation of the driver so as to be sequentially repeated to supply the last nail into the nail guide path. However, in the structure described above, the last nail fed into the nail guideway becomes very unstable because it is not held, and especially the last nail fed into the nail guideway is When the residual pressure of the air of the nailing machine main body is introduced with the upward movement of the return, the residual pressure of the air blows off the nails and the nails are not positioned in the normal state and the nails are clogged. It was also the cause of such. Therefore, in order to solve the above-mentioned problems, the last nail is configured to be held in the nail feed passage so that the last nail is not fed into the nail guide passage (Actually, Sho 60). No. 61177), and a nail pop-out prevention claw provided below the check claw, and the nail pop-out prevention claw is configured to hold the lower part of the nail. No.) was devised.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned former one, since the last nail remains in the nail feeding passage, the remaining nail is inevitably removed when the next new connecting nail is loaded in the nail magazine. It was necessary to make the loading work of the connecting nails complicated, and the removed nails were thrown away as it was, which was economically unreasonable. Also, the latter type is designed to correspond to the size of the nail, and in the case of a nail with a short length, it is not possible to hold the last one nail. As it is. Therefore, in view of the above-mentioned conventional problems, the present invention accurately holds the last one nail in the nail feed passage regardless of its length and removes the last one nail. It is an object of the present invention to provide a nail posture control device for a nailing machine that can be supplied into a nail guideway.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a nail guide path formed in a driver guide mounted on a nailing machine main body and through which a driver for driving a nail is reciprocally inserted, and the nail guide path. And a nail feed passage which is connected to the nail guide passage for guiding the row of connected nails from within the nail magazine, and a nail feed pawl means for supplying the connecting nails in the nail feed passage one by one into the nail guide passage, and the nail. In a nailing machine provided with check claw means opposed to the feed claw means for preventing the nail in the nail feed passage from moving in the direction opposite to the supply direction, a nail driving machine is provided near the check claw means. The gist is that the second claw portion, which laterally supports the upper portion of the nail immediately before being supplied to the nail guide path, is bulged.

[0005]

[Action]

 According to the above configuration, while holding the last one nail upper part in the nail feeding passage by the second claw portion formed in the vicinity of the check claw means, the last one nail is held by the nail feeding claw means. The nails are supplied into the nail guideway.

[0006]

Embodiment An embodiment of the present invention will be described below in detail with reference to the drawings. In the figure, in a nailing machine 1 of this example, a striking piston (not shown) is reciprocated by suction and discharge control of compressed air, and a driver 2 mounted on this striking piston is connected in a predetermined number of rows. The nails W are configured to be ejected one by one. At the bottom of the main body 3 having the striking piston built therein, there is provided a driver guide 5 capable of inserting the driver 2 and forming a nail guide path 4 into which the connecting nails W from a nail magazine (not shown) are fed one by one. The driver guide 5 is integrally provided with a guide wall 6 to which the nail magazine is attached. The connecting nail W used in this embodiment is, for example, a connecting nail (commonly called a wire connecting nail) in which a large number of nails are connected in a row by a thin wire.

The guide wall 6 is provided with a guide concave portion 7 for guiding the head of the connecting nail W, and an opening window for projecting a nail feeding claw means 15 of a nail feeding device, which will be described later, in a protruding shape at a substantially front portion thereof. Part 8 is formed. On the front surface side of the guide wall 6, a door member 9 is disposed opposite to the guide wall 6 at a predetermined interval. One end of the door member 9 is attached to the bracket 10 attached along the outer peripheral axial direction of the driver guide 5. It is mounted via a support shaft 11 so as to be openable and closable about the axis of the driver guide 5. A nail feed passage 12 is formed between the door member 9 and the guide wall 6 at a predetermined interval. One side of the nail feed passage 12 receives the connecting nail W in the nail magazine, and the other side thereof receives the connecting nail W. It communicates with the nail guide path 4 of the driver guide 5.

An air cylinder 13 serving as a drive source of the nail feeding device is formed on the back side of the guide wall 6, and is slidably inserted into the air cylinder 13 and extended by a compression spring 13a ( A rod 14 urged in the (extending direction) is extended forward along the guide wall 6, and a nail feeding claw means 15 is horizontally formed by a support pin 17 via an arm portion 16 at a tip end portion of the rod 14. It is supported so that it can tilt. The claw portion of the nail feeding claw means 15 is projected into the nail feeding passage 12 from the opening window portion 8 and the two first portions are formed so as to form a groove portion 15a for holding one nail of the connecting nail W 1. And second claw portions 15b and 15c, and the surface of the first claw portion 15b on the groove portion 15a side and the surface of the second claw portion 15c on the side opposite to the groove portion 15a facilitate gripping of the nail. Therefore, the groove 15a is formed in an oblique shape, and the other surface of the groove 15a is a vertical surface with which the nail comes into contact when the nail is fed. The arm portion 16 is biased by the winding spring 18 wound around the support pin 17 so that the claw portion of the nail feeding means 15 always faces the nail feeding passage 12 with respect to the rod 14. Then, the nail feed claw means 15 is located in the nail feed passage 12 and is fed into the nail guide passage 4 with respect to the connecting nail W (next to the earliest nail W1 located in the nail feed passage 12). The second nail W2, that is, the second nail W2 is captured in the groove 15a, and the air on the rod side of the air cylinder 13 is discharged while the nail W2 is in contact with the vertical surface of the second nail W2. It is moved by being moved forward by one pitch (extended toward the nail guide path 4 side) by the urging force, and the first nail W1 connected to this is not fed into the nail guide path 4, and the air cylinder 13 is also used. In this case, air is supplied to the rod side and the rod 14 is contracted, so that the next nail, that is, the second nail W2 located at the second position, is retracted and captured in the groove 15a. Nail feed nail Stage 15 is to release the capture state by the groove portions 1 5a is tilted against the elastic force of the coil spring 18 while contact with the nail was fed previously (nail is in the position state of the earliest W1).

A recess 19 is formed in the door member 9 at a position facing the opening side of the guide wall 6, and a check claw means 20 is horizontally formed in the recess 19 via a support shaft 21. It is supported so that it can tilt. The claws of the non-return claw means 20 are a pair of upper and lower first claws 20a positioned at the rear of the nail W1 which is always at the earliest position in the nail feed passage 12, and the first claws. It is composed of a second claw portion 20b which is located substantially in the upper part between the portions 20a and which is always located at the frontmost position of the nail W1. The second claw portion 20b is located at the frontmost position of the first claw portion 20a. The surface on the side of a certain nail W1 is a vertical surface that can come into contact with the shaft of the nail, and the surface on the opposite side is a slanted surface, and it is at the frontmost position on the second claw 20b. The surface on the side of the certain nail W1 is a slanted surface capable of abutting on the shaft upper portion of the nail. A compression spring 22 is elastically mounted between the intermediate portion of the check claw means 20 and the side surface of the recess 19, whereby the check claw means 20 is always biased toward the nail feed passage 12 side. Thus, the second claw portion 20b of the nail W1 at the earliest position in the nail feed passage 12 is always pressed to face the second nail portion 20b, and the nail feed claw means 15 is restored by the first nail portion 20a. It is configured so that it is prevented from being hooked by the claw portions 15b and 15c of the nail feeding claw means 15 and is moved back during the movement, and is held at that position.

The nail posture control apparatus of this embodiment is configured as described above, and its operation will be described. Now, the compressed air is sucked and discharged by a retracting operation of a trigger (not shown) to reciprocate a striking piston (not shown), and the driver 2 is reciprocally moved in the nail guide path 4 integrally with the striking piston (not shown). The nail is fed into the nail 4 and the nail is fed into the nail magazine in synchronization with the nail driving operation by the driver 2, that is, the backward movement (upward movement) of the driver 2. The connecting nails W inserted in the passage 12 are fed one by one into the nail guide path 4 by the nail feeding device. The nail feeding operation of the connecting nail W by the nail feeding device is performed as follows. First, air is supplied to the rod side of the air cylinder 13 in the nail feeding device to retract the rod 14, and the nail feeding is performed by the groove portion 15a between the first and second nail portions 15b and 15c of the nail feeding nail means 15. In a state in which the nail next to the earliest nail W1 in the passage 12, that is, the second nail W2 located in the passage 12 is being captured, the air cylinder 13 is moved along with the return (upward movement) of the driver 2. When the supply of air on the rod side is stopped, the air is discharged to the atmosphere side, and the rod 14 is moved forward (forward) by one pitch by the biasing force of the compression spring 13a. Along with this, the nail feeding claw mechanism 15 is moved forward by one pitch together with the second nail W2 captured by the groove 15a between the first and second claws 15b and 15c. Therefore, the earliest nail W1 connected to this is fed into the nail guide path 4 to respond to the driving by the driver 2.

When air is supplied to the rod side of the air cylinder 13 and the rod 14 is retracted (returned) by one pitch, the nail feed pawl means 15 is also retracted by one pitch, and the following 2 The nail W2 positioned at the second position is captured in the groove 15a and waits for the next nail feeding operation. That is, the nail feeding claw means 15 is tilted against the elastic force of the winding spring 18 while abutting the slanted surface of the first claw portion 15b on the groove portion 15a side with respect to the previously moved nail W2, and the groove portion thereof is tilted. The trapped state by 15a is released to move (retract), and the sloping surface of the second claw portion 15c opposite to the groove portion 15a is used to wind the spring 18 for the nail to be captured next. It is automatically tilted back by the elastic force of and is captured by the groove 15a. In this case, the nail W1 sent as described above and located at the frontmost position is always biased by the compression spring 22 toward the nail feed passage 12 side. The pair of upper and lower first claw portions 20a of the check claw means 20. The vertical surface of the shaft allows the rear surface of the shaft to abut and hold it, and the inclined surface of the second pawl 20b holds the front surface of the shaft at the upper side of the shaft. Therefore, the nail feeding claw retracted as described above. The first claw portion 15a of the means 15 prevents the nail W1 from being hooked and retracted, and holds it at that position.

Then, the connecting nails W in the nail feed passage 12 are sequentially fed into the nail guide passage 4, and the last nail is fed as described above as shown in FIG. When the feeding claw means 15 is retracted, as shown in FIG. 5, the check claw means 20 is always biased toward the nail feeding passage 12 by the compression spring 22 as described above. The slanted surface of the second claw portion 20b presses and holds the shaft upper front surface and the side portion side of the last nail to reliably secure its position. In particular, in this embodiment, since the shaft upper portion of the last nail is held by the resistance of the inclined surface of the second claw portion 20b of the check claw means 20, the nail is driven by the residual pressure of the air of the nailing machine. The nail can be stably and accurately held without being blown off and falling off from the nail guide path 4 or being bent and driven. When the nail feed claw means 15 is moved forward by one pitch as described above, the last nail is fed into the nail guide path 4 by the tip of the nail feed claw means 15.

[0013]

[Effect of the device]

 As described in detail above, the present invention provides a nail guide path which is formed in a driver guide mounted on a nail driver main body and which reciprocally inserts a driver for nail ejection, and a nail guide path. Nail feed passages that are connected to each other and guide the row-shaped connecting nails from within the nail magazine, nail feed pawl means for supplying the connecting nails in the nail feed passage one by one into the nail guide passage, and the nail feed A nailing machine provided with check claw means facing the claw means and preventing the nail in the nail feed passage from moving in the direction opposite to the supply direction, wherein the nail is provided in the vicinity of the check claw means. Since the second claw portion which laterally supports the upper part of the nail immediately before being supplied to the guide path is expanded, the nail feed passage is formed by the second claw portion formed in the vicinity of the check claw means. While holding the last one of the nails in the proper position, the nail feeding claw means keeps the last one of the nails in place. It can be supplied to the nail guide path.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a nailing machine showing an embodiment of the present invention.

FIG. 2 is likewise a sectional view taken along the line AA of FIG.

FIG. 3 is also an enlarged cross-sectional view showing an operating state of a main part.

FIG. 4 is also an enlarged cross-sectional view showing a state in which the last nail in the nail feed passage is located at the frontmost position.

FIG. 5 is likewise an enlarged cross-sectional view showing a state in which the nail located first in the nail feed passage is held.

FIG. 6 is likewise an enlarged cross-sectional view showing a state in which the nail located first in the nail feed passage is fed in.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Nail driver 2 Driver 4 Nail guide path 9 Door member 12 Nail feed passage 15 Nail feed claw means 20 Check claw means 20b Second claw part

Claims (1)

[Scope of utility model registration request] 1. A nail guide path formed in a driver guide mounted on a nailing machine main body and through which a nail driving driver is reciprocally inserted, and a nail guide path connected to the nail guide path and from within a nail magazine. Of the row-shaped connecting nails, nail feeding pawl means for supplying the connecting nails in the nail feeding passage one by one into the nail guide path, and the nail feeding nail means facing the nail feeding pawl means. In a nailing machine provided with a check claw means for preventing the nail in the feed passage from moving in a direction opposite to the supply direction, immediately before being supplied to the nail guide path in the vicinity of the check claw means. A nail posture control device in a nailing machine, characterized in that a second nail portion that laterally supports the upper portion of the nail is bulged.