JPH0549278U - Nail driving depth adjustment device for nailer for loose nails - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a nail driving depth adjusting device of a nail driving machine for loose nails in which the nail driving depth can be freely set. [Structure] A stop link that is connected to the contact arm at one end side and is rotatable with the reciprocating movement of the contact arm, and a vertical axis of the nail driving hole that is connected to the stop link and at the other end side and is rotated as the stop link rotates. A member disposed in the nose unit so as to be capable of reciprocating in the lateral direction, and attached to a side portion of the nose unit and capable of changing a contact position of the member in the lateral direction with respect to the vertical axis of the nail ejection hole. An adjuster is included to change the protrusion amount of the driver tip from the tip of the nail ejection hole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention feeds a large number of loose nails one by one into the nail driving hole of the nose unit of the nail driving machine for nailing the nail, and the nail is driven from the nail driving hole by the rod-shaped driver that reciprocates in the nail driving hole. The present invention relates to a nail driving depth adjusting device for a nail driving machine for loose nails that is driven into a driving material.

[0002]

[Prior art and its problems]

 The applicant of the present application has provided a nailing machine for loose nails provided with a loose nail supply device in Japanese Patent Application No. 62-46423 (Japanese Utility Model Laid-Open No. 63-154173). However, this nailer for loose nails cannot adjust the nail driving depth (the amount of penetration of the expanded diameter head of the nail from the surface of the nail driving material).

[0003]

[Problems to be solved by the device]

 The present invention is to provide a nail driving depth adjusting device of a nail driving machine for loose nails, which can freely set the nail driving depth.

[0004]

[Means for Solving the Problems]

 The present invention is equipped with a nailing hole which is attached to the main body of a nailing machine for loose nails, and in which a rod-shaped driver linearly reciprocates to strike a nail at its tip to strike a nailing material, At the end of the driver's nail driving stroke, the nose unit is such that the tip of the driver projects from the tip of the nail driving hole and the nose that can reciprocate around the nail driving hole along the longitudinal axis of the nose unit. A contact arm that is placed in the unit and that issues a nail driving stroke start permission signal when it is pressed against the surface of the nail driving material before the driver starts the nail driving stroke and retracts to the maximum with respect to the tip of the nail driving hole. In the nailing depth adjusting device of the nailing machine for the provided nails, the stop link that is connected to the contact arm at one end side and can rotate with the reciprocating movement of the contact arm, and the stop link and the other end side. Attached to the side of the nose unit and a member arranged in the nose unit so as to be able to reciprocate laterally with respect to the vertical axis of the nail hole as the stop link rotates. This includes an adjuster that can change the contact position of the adjuster and a member that is reciprocally movable in the lateral direction with respect to the vertical axis of the driver, which changes the amount of protrusion of the driver tip from the tip of the nail ejection hole. It is characterized by doing.

[0005]

[Operation and effect of the device]

 By changing the contact position of the adjuster and the above member in the lateral direction of the vertical axis of the nail ejection hole, the amount of retreat of the member relative to the nail ejection hole is changed, which causes the rotation of the stop link. The amount is changed. As a result, the amount of protrusion of the driver tip from the tip of the nail driving hole is changed, and the amount of nail head penetration (driving depth) from the surface of the nail driving material is changed. As described above, the nail driving depth can be easily set freely by the adjuster arranged on the side of the nose unit.

[0006]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 shows a nose for driving the individual nails into the nail driving material one by one by reciprocally moving the rod-shaped driver 4 by a striking air cylinder (not shown) of an air-driven nailer for nailing the nails. The unit 1 is shown as a front view.

The nose unit 1 includes a nose body 1A which is integrated with a lower end plate 2 of a striking air cylinder, a T-shaped upper driver guide cover 3a, and a substantially trapezoidal lower driver guide cover 3b. It is attached to the tip of a driving machine body (not shown). The lower end central portions 1c and 3c of the nose body 1A and the lower driver guide cover 3b are projected below the lower left and right portions 1d and 3d of the nose body 1A and the lower driver guide cover 3b. Forming a surface that abuts the surface of. The lower end left and right engaging portions 33a of the contact arm 33 described later can be engaged with the lower end left and right portions 1d and 3d of the nose body 1A and the lower driver guide cover 3b. A straight nail driving groove 5 in which the rod-shaped driver 4 reciprocates in the vertical direction extends in the vertical direction on the front central axis of the nose body 1A. The driver 4 has such a length that it slightly projects from the tip of the nail driving groove 5 at the end of the nail driving process.

On the front surface of the nose body 1 A, at the substantially central portion in the vertical direction, on the left and right sides of the nail driving groove 5, the nail driving groove 5 is communicated, and the vertical axis of the nail driving groove 5 is provided. On the other hand, a wide slide piece guide groove 6 extending at a right angle and a nail escape plate / nail stopper inner groove 7 are provided. A nail head receiving groove 9 for receiving the expanded diameter head 8a of the nail 8 is formed on the front surface of the nose body 1A at a connection portion between the upper edge of the slide piece guide groove 6 and the nail driving groove 5. ing.

At the outer end of the slide piece guide groove 6, a slide piece receiver 12 is fixed to the nose body 1A. Spring receiving recesses are provided at two upper and lower positions of the slide piece receiver 12 so as to open toward the nail driving groove 5. At the outer end of the nail escape plate / nail stopper guide groove 7, a nail escape plate receiver 13 having an L-shaped cross section is fixed to the nose body 1A. The nail escape plate receiver 13 determines the retracted position of the nail escape plate 14 with respect to the nail driving groove 5.

In the slide piece guide groove 6, a slide piece divided into an upper slide piece 10 having a substantially rectangular shape and a lower slide piece 11 having a substantially rectangular shape is provided with respect to the vertical axis of the nail driving groove 5. It is arranged so as to be slidable at right angles. The width of the lower slide piece 11 is wider than the width of the upper slide piece 10 and contacts the vicinity of the tip of the nail 8. The upper slide piece 10 and the lower slide piece 11 move the nail 8 from its head 8a to its tip. It can support up to the vicinity of the part.

At the outer end of the upper slide piece 10, a spring receiving portion 15 is provided which stands up in the front direction of the nose unit 1. The spring receiving portion 15 is provided with a spring receiving recess facing the spring receiving recess of the slide piece receiver 12. A compression coil spring 17 is arranged between the spring receiving recess of the slide piece receiver 12 and the spring receiving recess of the slide piece 10 side. The inner end surface 10a of the upper slide piece 10 is inclined as a whole with respect to the vertical axis of the nail driving groove 5, and the inner end upper side surface 10b of the upper slide piece 10 is inclined to the inner end surface 10a. On the other hand, the nail head 8a of the nail 8 is formed so as to be inclined in a state of being further warped so that the nail head 8a can slide down. As in the case of the upper slide piece 10, a spring bearing portion is provided at the outer end of the lower slide piece 11. The spring receiving portion has a spring receiving recess. The compression coil spring 20 is arranged between the spring receiving recess of the slide piece receiver 12 and the spring receiving recess of the lower slide piece 11. The inner end surface of the lower slide piece 11 has the same inclination as the lower part of the inner end surface of the upper slide piece 10.

In the nail escape plate / nail stopper guide groove 7, a substantially rectangular nail escape plate 14 and a nail stopper 16 are arranged so as to be slidable at right angles to the vertical axis of the nail ejection groove 5. Has been done. An operation portion 22 that rises in the front direction of the nose unit 1 is provided near the outer end of the nail escape plate 14. The operating portion 22 has a U-shaped cutout 23 that is cut rearward from its front surface. A piston rod 25 of an escape air cylinder 24 described later is inserted into the notch 23. The piston rod 25 is fixed to the operating portion 22 by a nut 26. As shown in FIG. 4, a nail pick-up groove 27 having an L-shaped cross section is provided at the rear inner end of the nail escape plate 14. The nail pick-up groove 27 receives the shaft portion of the nail 8. The inner end surface 14a of the nail escape plate 14 as a whole is inclined to the front with respect to the vertical axis of the nail driving groove 5 and has the same inclination as the inner end surface 11a of the lower slide piece 11.

A nail stopper 16 is arranged below the nail escape plate 14. A block 16 a protruding toward the front of the nose unit 1 is provided at the outer end of the nail stopper 16. An adjusting screw (adjuster) 35 that is screwed into the nail escape plate receiver 13 is provided in a part of the nail escape plate receiver 13 that faces the block 16a, and the tip of the adjusting screw 35 is located in the nail escape plate receiver 13. It projects inward from the inner surface of the rising portion 13a and forms the contact surface 35a of the nail stopper 16 against the block 16a. The position of the contact surface 35a of the adjusting screw 35 with respect to the inner surface of the rising portion 13a of the nail escape plate receiver 13 is fixed by a lock nut 36 arranged outside the rising portion 13a of the nail escape plate receiver 13. When the position of the contact surface 35a of the adjusting screw 35 changes, the retreat amount of the nail stopper 16 changes. On the other hand, on the front surface of the inner end of the nail stopper 16, there is provided a groove 19 having an arcuate ring. The nail stopper 16 locks the enlarged-diameter nail head 8a of the nail 8 by the peripheral edge 21 at the upper end of the groove 19 and holds the nail 8 in a suspended state. A pin 28 protruding toward the front surface of the nose unit 1 is provided near the inner end of the nail stopper 16. The pin 28 is inserted into the long hole 30 of the stop link 29.

A contact arm guide 32 having a substantially L-shaped front surface is fixed to the front surface of the lower driver guide cover 3b. Between the lower driver guide cover 3b and the contact arm guide 32, a contact arm 33 whose front shape is an inverted T shape is slidably arranged in the vertical direction within a certain range. When the contact arm 33 is pressed against the surface of the nail driving material before the start of the nail driving stroke of the driver 4 and retracts to the tip of the nail driving groove 5 to the maximum, a contact signal for starting the nail driving stroke is issued. .. A tension spring 36 is arranged between the contact arm 33 and the contact arm guide 32. The tension coil spring 36 constantly urges the contact arm 33 downward. Therefore, when the contact arm 33 is not pressed against the nail driving material, the upper end locking portion 33b of the contact arm 33 is not contacted with the contact arm 33. The lower end surface 33g of the contact arm 33 is locked to the upper end locking portion 32a of the guide 32 and projects downward from the lower end central portion 1c of the nose body 1A and the lower end central portion 3c of the lower driver guide cover 3b. .. An engaging groove 33d is formed on the side surface of the contact arm body 33c so as to extend in the front-rear direction of the contact arm body 33c at a portion where the upper end engaging portion 33b of the contact arm 33 and the body 33c of the contact arm 33 are connected. Has been done.

On the other hand, a substantially L-shaped stop link 29 is provided as a link connecting the nail stopper 16 and the contact arm 33. The upper portion i of the stop link 29 is provided with the elongated hole 30 as described above, and the hole 31a for inserting the pivot 31 is provided below the elongated hole 30. The stop link 29 is connected to the nail stopper 16 via the pin 28, and the lower end portion 29a is engaged with the upper and lower edges 33e and 33f of the engaging groove 33d of the contact arm 33. The retreat amount of the nail stopper 16 is determined by the position of the contact surface 35a of the adjusting screw 35, and the retreat amount of the nail stopper 16 determines the clockwise rotation limit of the stop link 29. A climb limit of 33 is determined.

Therefore, when the lower end surface 33g of the contact arm 33 is pressed against the surface of the nail driving material, the lower end surface 33g of the contact arm 33 is pressed by the lower end central portion 1c of the nose unit 1A and the lower driver guide cover 3b. When the contact surface 35a of the adjusting screw 35 is adjusted so as to project downward from the lower central portion 3c, and the lower end surface 33g of the contact arm 33 is pressed to the surface of the nail driving material to the maximum, The lower central portion 1c of the lower unit 1A and the lower central portion 3c of the lower driver guide cover 3b are separated from the surface of the nail driving material by a distance adjusted by the link configuration of the nail stopper 16, the stop link 29 and the contact arm 33. float. Therefore, when the driver 8 drives the nail 8 into the nail driving material, the amount of the driver 4 sinking into the nail driving material becomes small, and the driving depth of the nail 8 becomes shallow. That is, the limit of the driving depth of the nail 8 is determined by the protruding amount of the tip of the driver 4 protruding from the lower end surface 33g of the contact arm 33.

On the other hand, in the case where the lower end surface 33g of the contact arm 33 is pressed against the surface of the nail driving material, the lower end surface 33g of the contact arm 33 causes the lower central portion 1c of the nose unit 1A and the lower driver guide cover 3b. The position of the contact surface 35a of the adjusting screw 35 is adjusted so that it is flush with the lower central portion 3c, or retracted further, and the lower end surface 33g of the contact arm 33 reaches the maximum on the surface of the nail driving material. When pressed down, the lower end surface 33g contacts the surface of the nail driving material together with the lower center portion 1c of the nose unit 1A and the lower center portion 3c of the lower driver guide cover 3b. That is, the limit of the driving depth of the nail 8 is determined by the protruding amount of the tip of the driver 4 protruding from the lower central portion 1c of the nose unit 1A and the lower central portion 3c of the lower driver guide cover 3b. It

As shown in FIG. 2, on the back surface of the nose body 1 A, the loose nails arranged in parallel are stored, and the weight of the nail is reduced toward the nail pick-up groove 27 of the nail escape plate 14. The magazine 34 to be sent by is attached. The magazine 34 has a nail feed passage having a T-shaped cross section that is substantially the same as the cross sectional shape of the nail 8. The nail head 8a is passed at the upper end portion of the nail feed passage, and the shaft portion of the nail 8 is passed at the lower portion of the nail feed passage. The cross section of the nail feeding passage has the same inclination as the nail pick-up groove 27 of the nail escape plate 14, and overlaps with the nail pick-up groove 27 when the nail escape plate 14 is in the nail launch standby position.

In the above embodiment, the nail stopper 16 is arranged as a member between the stop link 29 and the adjusting screw 35 which is the adjuster, but this is connected to the stop link 29 to prevent this rotation. Accordingly, any member can be used as long as it is configured to be moved laterally with respect to the vertical axis of the nail ejection hole, and is not limited to the nail stopper 16.

[Brief description of drawings]

FIG. 1 is a front view of a nail driving depth adjusting device of a nailing machine for loose nails according to the present invention.

2 is a side view of the nail driving depth adjusting device of FIG. 1. FIG.

FIG. 3 is a schematic plan view of a nail escape device.

FIG. 4 is an exploded perspective view of a nose unit of a nailer for loose nails.

[Explanation of symbols]

 1 Nose unit 1c Lower center part of nose unit 4 Driver 5 Nail driving groove (nail driving hole) 8 Nail 16 Nail stopper (member) 29 Stop link 33 Contact arm 33g Contact arm lower end surface 35 Adjustment screw (adjuster) 35a Contact surface

Claims (1)

[Scope of utility model registration request] 1. A nail driving hole, which is attached to a main body of a nail driving machine for loose nails, and in which a rod-shaped driver linearly reciprocates to strike a nail at its tip to drive a nail into a nail driving material. At the end of the driver's nail striking process, the nose unit is such that the tip of the driver projects from the tip of the nail striking hole and the nose unit is reciprocable around the nail striking hole along the longitudinal axis of the nose unit. And a contact arm that issues a nail driving stroke start permission signal when it is pressed against the surface of the nail driving material before the nail driving stroke of the driver and retracts to the tip of the nail driving hole to the maximum extent. In a nail driving depth adjusting device of a nailing machine for loosen nails, a stop link that is connected to a contact arm at one end side and is rotatable with reciprocating movement of the contact arm, and a stop link and the other end side. Member attached to the side of the nose unit so that it can be reciprocated laterally with respect to the vertical axis of the nail drive hole as the stop link rotates. And a adjuster capable of changing the contact position with the member in the lateral direction with respect to the vertical axis of the nail, thereby changing the amount of protrusion of the driver tip from the tip of the nail driving hole. Adjustment device.