TWI600511B - Nail machine - Google Patents

Description

Nail machine

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a nailing machine, and more particularly to a nailing machine having a feature in controlling the posture of a nail during ejection.

Previously, such a nailing machine is known to have a contact member for improving safety, and is provided at the tip of the nose. The contact member is pressed by the driven material and slides along the driving direction of the nail body, and the triggering operation of the trigger link is invalid (not possible) before being pressed into the material, and the contact member is not When pressed against the material being hit, even if the trigger link is operated, the nail body will not be pushed out.

Further, the contact nose of the injection path of the nail body is provided on the contact member, and the object for guiding the posture of the nail body is also known. An injection path for stably supporting the posture of the nail body is formed inside the contact nose, and by providing the contact nose, the posture of the nail body can be stably maintained until the member is penetrated, so that the bending of the nail body can be effectively prevented.

However, the inner diameter of the contact nose is formed by matching the maximum head diameter of the nail body that can be used by the nailing machine, so that the nail body having a smaller head diameter or a smaller diameter or a shorter length of the nail body is driven. The angle of inclination in the exit path becomes larger. Moreover, when the nail body is driven in a state of being inclined, there is a problem that the nail body is bent.

To solve this problem, for example, the composition of the replaceable contact nose is well known. By replacing the contact nose, you can use the inner diameter of the head diameter of the nail used. Since the nose is in contact with each other, the inclination of the nail body in the injection path can be suppressed, and the bending of the nail body can be prevented.

In another aspect of the invention, for example, in the invention described in Patent Document 1, a toe-pointing guide member (ratchet member) having a rotary type is provided on the contact nose. The toe guiding member includes: an inclined surface guiding the tip end of the nail body inclined toward the rear side of the ejection opening into the ejection opening; and an inducing surface for inducing the tip end of the nail body toward the center of the ejection opening; being pushed to enter Inside the shooting exit. According to this configuration, the toe of the nail body can be induced to the front side, so that by multiplying the reaction with the nail body knocking, the nail body can be driven vertically relative to the material to be driven. It can prevent the bending of the nail body.

In addition, Patent Document 2 discloses a configuration in which a rotary toe guide member (guide portion) is provided on an emission path of the main body casing.

[First technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2004-330366

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2009-83091

However, when the composition of the contact nose can be replaced, there is a problem that the replacement work is complicated and the contact nose that is removed is lost.

Moreover, when the contact nose is provided with a rotary toe guiding member, the tip of the contact nose is large and heavy, so that the nose cannot be inserted. In a narrow place, or because the center of gravity shifts to the tip side, it is difficult to retrieve, which makes the operability worse.

In this regard, according to the configuration described in the first embodiment of Patent Document 2, a rotary toe guide member (guide portion) is provided on the exit path of the nose portion, so that the contact member does not become large. . However, the contact nose is not provided, and the contact member is not an object for guiding the posture of the nail body. Therefore, especially when the penetration depth of the nail body is set to be shallow, the nail body cannot be guided until the end of the shot, and the nail body cannot be stably supported. Pose. Therefore, it is impossible to solve the original problem of preventing bending.

In this way, when the nail body is prevented from being bent, it is effective to use the contact nose system, and the contact nose is replaced by the head diameter of the corresponding nail body, or the toe guiding member is provided in the contact nose, but all of them are problematic. point.

Here, the problem of the present invention is to provide a posture in which the nail body can be stably supported until the end of the shot, even if the operation of replacing the nose or the like is not performed, and the tip end shape of the contact nose can be kept small. machine.

The present invention has been developed to solve the above problems, and its features are as follows.

(1) The present invention takes the following points as features.

That is, the nailing machine of the present invention includes: a nose portion formed with an exit passage through which the knocked nail body is pushed out; and a contact nose formed with an exit path continuous with the exit passage of the nose portion, and at the same time The aforesaid nose is slidably supported to be pressed against the driven material; and in the nose portion, a toe guiding member provided with a guiding surface of the inducing nail body, the toe guide The lead member is pushed so as to enter the exit path of the aforementioned contact nose.

(2)

According to the invention of the above (1), the following features are added to the features of the invention described in the above (1).

That is, a notch portion of the wall into which the toe guiding member can be inserted is formed on the inner surface of the contact nose as a feature.

(3)

According to the invention of the above (2), the following features are added to the features of the invention described in the above (2).

That is, the lateral width of the wall notch portion is gradually reduced in the driving direction.

(4)

The invention described in (4) is characterized by the features of the invention described in the above (2) or (3), and the following features are added.

That is, the minimum width of the wall notch portion is characterized by being smaller than the minimum head diameter of the nail body that can be used in the nailing machine.

(5)

According to the invention of the present invention, the feature points of the invention described in any one of the above (2) to (4) are added to the following features.

That is, the maximum width of the wall notch portion is characterized by the same inner diameter as the injection path of the contact nose.

(6)

According to the invention of the present invention, the feature points of the invention described in any one of the above (1) to (5) are as follows. , that is, the guiding surface of the aforementioned toe guiding member is formed It is characterized by a narrower width than the upper width.

According to the present invention, the contact path formed by the contact nose with the ejection path of the nose is formed by the contact nose. Therefore, even if the penetration depth of the nail body is set to be shallow, the nail body can be guided. Until the end of the fight. Further, since the nail body is induced by the guiding surface of the toe guiding member, even if the head diameter of the nail body is small, the contact body can be stably supported without changing the contact nose.

Moreover, the toe guiding member is rotatably mounted on the nose to contact different individuals of the nose, and therefore, the influence of the size and weight of the contact nose caused by the provision of the toe guiding member is small, so The shape of the tip that can keep the contact nose small is small, and the influence on the operability caused by providing the toe guiding member can be reduced.

Further, the present invention has the feature of (2), wherein the inner surface of the contact nose is formed with a wall notch for entering the toe guiding member, so that the toe guiding member can smoothly enter the contact nose. Inside.

Further, according to the invention, the lateral width of the notch portion contacting the nose is gradually reduced in the direction of the driving direction, so that in the vicinity of the ejection opening, the contact nose of the ejection path of the nail body is formed. The inner surface has a shape close to a circle, so that the inner surface of the contact nose that is close to the circular shape is hung into the nail body, and the nail body can be stably supported. Therefore, in the upper portion, the guiding surface of the toe guiding member is enlarged, whereby the toe of the nail body can be surely inserted, and in the lower portion, the inner surface of the contact nose is brought into a shape close to a circle, whereby It is possible to keep the head of the nail body.

Moreover, the present invention is that the toe guiding member is rotatably fixed to the nose, so that the penetration depth is changed by the driving depth adjustment mechanism, thereby The relative position of the toe guiding member to the contact nose changes. Therefore, when the penetration depth of the nail body is set to be shallow by the depth adjustment mechanism, the toe guide member sometimes does not reach the tip end of the contact nose, but even in this case, the circle can be borrowed The inner surface of the contact nose holds the nail body, so that the nail body can be stably supported even without the toe guiding member.

Further, according to the invention, the minimum width of the wall notch portion is set to be smaller than the minimum head diameter of the nail body usable by the nailing machine, so that the nail body head is provided. It will not fall in the direction of the wall notch, and the nail will not deviate from the exit path.

Further, according to the invention, the maximum width of the wall notch portion is the same as the inner diameter of the injection path of the contact nose, so that the guide surface of the toe guide member can be enlarged. It does break into the toe of the nail.

Furthermore, the present invention is characterized in that the guide surface of the toe guiding member is formed such that the lower width is narrower than the upper width, so that in the upper portion, the toe guide is increased. The guiding surface of the member can be surely inserted into the toe of the nail body. In the lower portion, the shape of the inner surface of the contact nose is close to a circular shape, and the head of the nail body can be surely maintained.

10‧‧‧nailing machine

11‧‧‧ Body shell

12‧‧‧Nose

12a‧‧‧Axis fixed part

12b‧‧‧Spring support

13‧‧‧ grip shell

15‧‧‧ trigger

16‧‧‧nails

17‧‧‧End cover

20‧‧‧Contact nose

21‧‧‧ inner surface

22‧‧‧ wall gap

22a‧‧‧ upper

22b‧‧‧Central

22c‧‧‧ lower

30‧‧‧Foot guide members

31‧‧‧ Guidance Department

32‧‧‧ Guide surface

32a‧‧‧ Wide section

32b‧‧‧Narrow section

33‧‧ ‧ spring bearing

34‧‧‧Axis hole

36‧‧‧Rotary axis

37‧‧‧ Pushing members

40‧‧‧ Shooting path

41‧‧‧Adjustment knob (into the depth adjustment mechanism)

42‧‧‧shots

Figure 1 is a side view of the nailing machine.

Figure 2 is a partially enlarged perspective view of the vicinity of the nose.

Figure 3 is a rear side view of the contact nose.

Figure 4 is a perspective view of the toe guiding member.

Figure 5 is a front view of (a) the toe guiding member; (b) a top view; (c) Side view; (d) bottom view; (e) rear side view.

Figure 6 is a partial cross-sectional view showing the vicinity of the nose at the deepest penetration depth, wherein (a) is a state diagram of pressing against the nose before being hit into the material; (b) is a pressure contact with the nose. State chart after being hit.

Figure 7 is a cross-sectional view of the cutting line shown in Figure 6(b), wherein (a) is a sectional view of AA; (b) is a sectional view of BB; (c) is a sectional view of CC; (d) DD profile; (e) is the EE profile.

Figure 8 is a partial cross-sectional view showing the vicinity of the nose when the penetration depth is the shallowest, wherein (a) is a state diagram of pressing against the nose before being hit into the material; (b) is a pressure contact contact The state of the nose after being hit into the material.

Figure 9 is a cross-sectional view of the cutting line shown in Figure 8(b), wherein (a) is a cross-sectional view of A'-A'; (b) is a cross-sectional view of B'-B'; (c) C'-C' sectional view; (d) D'-D' sectional view; (e) E'-E' sectional view; (f) F'-F' sectional view.

Fig. 10 is a partially enlarged perspective view showing the vicinity of a nose portion according to another embodiment of the present invention.

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

The nailing machine 10 of the present embodiment is a pneumatic nailing machine that uses compressed air to drive a nail body. As shown in Fig. 1, it includes: a body shell 11; a grip shell 13 connected to the body The rear of the casing 11; the magazine 16 is connected to the rear of the body casing 11 in the lower portion of the grip case 13.

Although not shown in the figure, the inside of the main body casing 11 is provided with a tapping cylinder, and the tapping piston is slidably accommodated in the knocking cylinder. On the lower surface of the tapping piston, a driver for tapping the nail body is provided in combination, When the tapping piston is actuated, the driver can be driven into the nail body.

At the lower tip end of the body casing 11, a nose portion 12 is formed in which an injection path for ejecting the nail body is formed, and the driver is slidably guided in the direction of the nose portion 12. Further, a nail body supply mechanism is provided behind the nose portion 12, and the nail body supply mechanism is configured to supply the nail body in the magazine 16 to the nose portion 12 in accordance with the driving of the nail body.

At the tip end of the nose 12 is disposed a contact nose 20 that is configured to be movable up and down relative to the nose 12 to be pressed against the material being driven. The contact nose 20 is slidably mounted at the tip end of the nose 12 to slide along the ejectable direction of the nail body. The contact nose 20 is coupled to an unillustrated contact arm of the safety device constituting the nailing machine 10. When the contact nose 20 is pressed against the material to be slid, the contact arm moves integrally upward. By moving the contact arm upwards, the operating trigger 15 can supply compressed air into the knocking cylinder (the punching of the nail body).

That is, when the trigger 15 is operated while being pressed against the contact nose 20 to be driven into the material (or, when the trigger 15 is operated, the contact nose 20 is pressed to the material to be driven), The compressed air of the air supply source of the air compressor or the like connected to the end cover portion 17 is supplied into the knocking cylinder, and the compressed air acts on the tapping piston, and the tapping piston is driven to be combined with the knocking Hit the drive on the piston to strike the nail. At this time, the actuator and the nail system are stably guided by the ejection path 40 inside the contact nose 20, and the ejection body 42 of the nail body from the tip opening of the contact nose 20 is pushed out.

Further, in the vicinity of the trigger 15, an adjustment knob 41 that is rotatably operated is provided. The adjustment knob 41 constitutes an object for driving the depth adjustment mechanism, and by adjusting the adjustment knob 41, the contact nose 20 (ie, the contact arm) can be adjusted. The movable field to set the penetration depth of the nail body. That is, although the press-in width of the contact nose 20 is constant, the relative positional relationship between the nose portion 12 and the contact nose 20 is changed up and down while maintaining the certain width, whereby the penetration depth of the nail body can be changed.

Further, in the vicinity of the tip end of the nose portion 12, as shown in Fig. 2, a toe guiding member 30 is rotatably attached, and the toe guiding member 30 is used to stably support the posture of the nail body. The toe guiding member 30 can enter the inside of the contact nose 20 from the wall notch portion 22 (described below) of the contact nose 20, and is urged by the pressing member 37 in a direction into the contact nose 20.

As shown in Fig. 3, the contact nose 20 is provided with a slit along the driving direction of the nail body, and a portion of the inner surface 21 of the contact nose 20 is thereby formed into a notch state by the slit. The wall notch portion 22 which is a portion which is a partial notch of the inner surface 21 is composed of a slightly parallel and wide upper portion 22a, a downwardly tapered central portion 22b, and a slightly parallel and narrow lower portion 22c. The more you get into the direction, the smaller it becomes.

Further, the lateral width of the upper portion 22a of the wall notch portion 22 (see the width W1 shown in Fig. 7(a)) is substantially the same as the diameter of the inner circumference of the contact nose 20. This is because the area of the guide surface 32 (described below) of the toe guide member 30 facing the exit path 40 is increased.

Further, the lateral width of the lower portion 22c of the wall notch portion 22 (see the width W2 shown in Fig. 7(e)) is set to be smaller than the minimum head diameter of the nail body usable by the nailer 10. This is because the ejection path 40 is taken out because the nail body head is not turned in the direction of the wall notch portion 22.

As shown in FIGS. 4 and 5, the toe guiding member 30 is a member having a slightly L-shaped shape in which the shaft hole 34 is bored in the intermediate portion, and includes a guiding portion 31. The extension is provided below the shaft hole 34; and the spring receiving portion 33 is disposed behind the shaft hole 34.

The shaft hole 34 is passed through the rotating shaft 36 as a center of rotation of the toe guiding member 30. Further, as shown in Fig. 2, the rotary shaft 36 is fixed to the shaft fixing portion 12a integrally provided on the nose portion 12.

The guiding portion 31 is disposed along a direction in which the wall notch portion 22 of the contact nose 20 is disposed, and has a guiding surface 32 that faces the inner surface 21 of the nose 20. As shown in Fig. 7 and the like, the guide surface 32 is a curved surface having a radius substantially equal to the inner circumference of the contact nose 20, and is continuous with the inner surface 21 of the contact nose 20 to form an ejection path 40 of the nail body.

As shown in Figs. 4 and 5, the guide surface 32 of the guide portion 31 is composed of the upper wide portion 32a and the lower narrow portion 32b, and becomes narrower as it goes downward. Further, when the guide surface 32 is viewed in the front-rear direction, as shown in Fig. 5(c), as it goes downward, it gradually protrudes forward.

The spring receiving portion 33 is a circular recess provided to receive the urging force of the pressing member 37. The pressing member 37 that pushes the toe guiding member 30 is fitted and fixed to the spring receiving portion 33 at one end while the other end is fitted and fixed to the spring supporting portion 12b formed on the nose portion 12. Thereby, the toe guide member 30 is always pushed by the urging force of the urging member 37, and the guide portion 31 is urged in the direction of entering the inside of the contact nose 20. Therefore, the toe of the nail body (not shown) formed by the injection path 40 formed inside the contact nose 20 is induced forward by the toe guiding member 30 against the urging force of the pressing member 37, When the injection path 40 is widened, it is driven downward. In this way, by providing the toe guiding member 30, the posture of the nail body can be stably supported.

Fig. 6 is a partial cross-sectional view showing the vicinity of the nose 12 when the depth of penetration is deepest by the depth adjustment mechanism. As shown, the contact nose 20 is slid relative to the nose 12 by the pressure against the contact nose 20, while the relative position of the contact nose 20 and the toe guide member 30 also changes. At this time, the lateral width of the wall notch portion 22 of the contact nose 20 and the lateral width of the guiding portion 31 (the guiding surface 32) of the toe guiding member 30 gradually decrease toward the driving direction, so that they correspond to each other, so Even if the guiding portion 31 of the toe guiding member 30 slides along the wall notch portion 22 of the contact nose 20, the two do not interfere.

Fig. 7(a) is a cross-sectional view in the uppermost portion of the guide surface 32 of the toe guiding member 30. As shown in Fig. 7(a), the guide surface 32 of the toe guiding member 30 is the widest in the uppermost portion so that when the toe of the nail body that is intended to pass the inner portion of the nose 20 flows to the rear, It is indeed broken into the toe of this nail to induce to the front.

Further, as shown in Figs. 7(a) to 7(e), the width of the wall notch portion 22 of the contact nose 20 gradually decreases toward the driving direction, thereby forming in the vicinity of the ejection opening 42. The inner surface 21 of the contact nose 20 of the ejection path 40 of the nail body has a shape close to a circle. Therefore, in the upper portion, the guiding surface 32 of the toe guiding member 30 is enlarged, whereby the toe of the nail body can be surely broken, and in the lower portion, the inner surface 21 of the contact nose 20 is made to be close to a circular shape. Thereby, the head of the nail body can be hung to be surely held.

Further, Fig. 8 is a partial sectional view showing the vicinity of the nose portion 12 when the penetration depth is the shallowest by the depth adjustment mechanism. As a result, when the penetration depth is set to the shallowest by the depth adjustment mechanism, the toe guiding member 30 does not reach the tip end of the contact nose 20 even if the pressing nose 20 is pressed against the material to be driven. Therefore, in the tip end of the contact nose 20, the posture maintaining function of the nail body by the toe guiding member 30 cannot be used. However, even in this case, the inner surface 21 of the contact nose 20 which is close to the circle is hung in the head of the nail body (refer to Fig. 9(f)), so even if there is no toe guiding member 30, The nail body can also be stably supported.

Moreover, as described above, the wall notch portion 22 of the contact nose 20 and the guide portion 31 of the toe guide member 30 are subjected to the shape thereof so as not to interfere when sliding. However, since the driving depth adjustment mechanism is operated, the relative position of the contact nose 20 and the toe guiding member 30 is not constant, so when the driving depth is set to the shallowest by the driving depth adjusting mechanism, the wall notch portion 22 The gap with the guide portion 31 becomes large. However, in the present embodiment, as shown in Fig. 9(a), when the depth adjustment mechanism is driven, the penetration depth of the nail body is set to the shallowest to press against the contact nose 20 on the driven material. At this time, the maximum width G of the gap formed between the wall notch portion 22 of the contact nose 20 and the toe guiding member 30 is set to be smaller than the minimum head diameter of the nail body usable by the nailing machine 10, so Even if the gap between the wall notch portion 22 and the guiding portion 31 is large, the nail body does not fall off from the gap. Therefore, regardless of how the penetration depth is set, the nail body does not come out from the gap between the contact nose 20 and the toe guide member 30.

As described above, according to the present embodiment, the posture of the nail body is stably supported by the inner surface 21 of the contact nose 20 which is pressed against the material, so that even if the penetration depth of the nail body is set to be shallow It is also possible to guide the nail body until the end until the nail body is finished. Further, the guiding surface 32 of the toe guiding member 30 which enters from the wall notch portion 22 of the contact nose 20 stably supports the posture of the nail body, so that even if the head diameter of the nail body is small, it is not necessary to replace the contact nose. 20 ground, can support the nail body stably.

Further, the toe guiding member 30 is rotatably mounted on the nose portion 12, which is different from the contact nose 20, so that the size of the contact nose 20 caused by the toe guiding member 30 is Since the influence of the weight is small, the shape of the tip end of the contact nose 20 can be kept small, the visibility is good, and the influence on the operability caused by the toe guiding member 30 is small.

Further, in the above-described embodiment, the wall notch portion 22 of the contact nose 20 is provided as a slit. However, the embodiment of the present invention is not limited thereto, and the wall notch portion 22 may be such that the toe guiding member 30 can be used. It is sufficient to enter the inside of the contact nose 20, which may be in any form. For example, as shown in Fig. 10, it may also cover a partial shape of the toe guiding member 30. Alternatively, the slit shape of the wall notch portion 22 may be omitted, and the bag shape of the entire toe guide member may be covered.

12‧‧‧Nose

12a‧‧‧Axis fixed part

12b‧‧‧Spring support

20‧‧‧Contact nose

22‧‧‧ wall gap

30‧‧‧Foot guide members

31‧‧‧ Guidance Department

33‧‧ ‧ spring bearing

36‧‧‧Rotary axis

37‧‧‧ Pushing members

Claims (7)

A nailing machine comprising: a nose formed with an exit passage through which a struck nail is pushed out; and a contact nose formed with an exit path continuous with an exit passage of the nose, and at the same time relative to the nose Slidably supported to be pressed against the material to be driven; and at the nose portion, a toe guiding member provided with a guiding surface of the ejection passage forming a nail together with the inner surface of the contact nose; The toe guiding member can enter the inside of the contact nose when the contact nose is pressed and slid by the driven material; and the contact nose can enter the wall of the toe guiding member along the contact nose The sliding direction of the contact nose is formed; the wall notch portion is configured to slidable relative to the toe guiding member to extend the contact tip when the contact nose is pressed against the material and slides The position of the lead member; the lateral width of the wall notch portion gradually decreases toward the driving direction. The nailing machine of claim 1, wherein the minimum width of the wall notch is smaller than a minimum head diameter of the nail body that can be used by the nailing machine. The nailing machine of claim 1, wherein the minimum width of the wall notch is smaller than a minimum head diameter of the nail body that can be used by the nailing machine. The nailing machine according to any one of claims 1 to 3, wherein a maximum width of the wall notch portion is associated with an exit path of the contact nose The inner diameter is the same. The nailing machine according to claim 1, wherein the guiding surface of the toe guiding member is formed such that a lower width is narrower than an upper width. The nailing machine according to any one of claims 1 to 3, wherein the guiding surface of the toe guiding member is formed such that a lower width is narrower than an upper width. The nailing machine of claim 4, wherein the guiding surface of the toe guiding member is formed such that the lower width is narrower than the upper width.