Nail driving device

Abstract

To provide a nail driving device capable of driving a nail by striking the nail and driving a nail flush with a surface of a material to be driven.SOLUTION: A nail driving device that drives a nail by striking a head portion of the nail with a striking part, includes: a temporary nail driver which has a stopper mechanism that limits a movement distance of the striking part, in which a body is arranged at a height that does not reach the surface of a material to be driven when the striking part moves to its maximum limit, and the nail cannot be driven to the surface of the material to be driven; and a finishing nail driver which has a striking part with a structure in which a striking surface protrudes from a head portion of the nail when being in contact with the head portion of the nail, in which the protruding portion becomes a stopper upon striking, and which can drive the temporarily driven nail flush with the material to be driven. According to the nail driving device of the present invention, the nail driving device that drives a nail by striking the nail can drive the nail flush with the material to be driven.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a nail driving device that enables a nail to be driven flush into a workpiece. [Background technology]

[0002] One of the commonly used housing construction methods is the two-by-four method. The two-by-four method is a housing construction method in which panels are made from square timber and plywood, and these panels are assembled to create a box-shaped space. These panels are manufactured by placing the panel surface material on a frame made of square timber, and then nailing the panel surface with a nail gun. When using a nail gun, if the nail floats off the panel surface, it becomes necessary to hit it again with a hammer, and conversely, if the nail sinks into the panel surface, the strength of the panel decreases, which is not desirable for the two-by-four construction method that supports buildings on a surface. Therefore, it is important to drive the nail so that it is flush with the panel surface, but since the hardness of the panel surface differs depending on the presence or absence of knots in the wood, it is difficult to drive the nail flush with a regular nail gun. As a nailer intended to drive nails flush with a surface, there is a nailer that aligns the movement limit position of the rod that strikes the nail with the tip of the nailer that contacts the board material, so that the nail is driven flush with the board material (Patent Document 1). However, even with this nailer, it is difficult to accurately drive the nail flush with the board material.

[0003] On the other hand, hydrostatic nailers, which use hydraulic pressure to drive the nail in little by little, can drive the nail into the ground accurately and flush, but their structure is very different from that of impact nailers and they are much larger devices than impact nailers. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2016-182645 A Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a nail driving device which drives a nail by striking it and is capable of driving a nail flush with the surface of a material into which the nail is to be driven. [Means for solving the problem]

[0006] The inventor of the present invention has conducted various studies to achieve the above object, and discovered that, while it is common practice for a nailing device to drive a nail in with one strike, it is possible to drive the nail in flush by splitting the strike into two strikes and by widening the striking surface of the nailing device during the second strike so that the nail does not sink into the material being driven in. This invention has been arrived at as follows. 1. A nailing device that strikes the head of a nail with a striking part to drive the nail into the nail. A temporary nailer having a stopper mechanism for limiting the moving distance of the striking part, and a main body is disposed at a height where the striking part does not reach the surface of the workpiece when the striking part moves to the limit, so that the nail cannot be driven into the surface of the workpiece. A finishing nailer having a striking part structured such that when it comes into contact with the head of a nail, the striking surface protrudes from the head of the nail, and when striking, the protruding part acts as a stopper, allowing the temporarily driven nail to be driven flush with the material being driven into the nail; A nail driving device comprising: 2. A nailing device that has a piston that is driven by compressed air, and the piston moves a striking part to strike the head of a nail and drive the nail into the nail. A temporary nailer in which the main body is disposed at a height such that the striking part does not reach the surface of the workpiece when the piston is fully depressed, thereby preventing the nail from being driven into the surface of the workpiece; A finishing nailer having a striking part structured such that the striking surface protrudes from the head of the nail when it comes into contact with the head of the nail, and when striking, the protruding part becomes a stopper, so that the temporarily driven nail can be driven in so that it is flush with the material to be driven in. A nail driving device comprising: 3. A nail gun that strikes the head of a nail with a striking part to drive the nail into the nail. The nail driver includes an adjustment mechanism for adjusting the travel distance of the impact part, and a striking part structured such that a striking surface protrudes beyond the head of the nail when the impact part comes into contact with the head of the nail, By adjusting the travel distance of the striking part, it is possible to temporarily drive the nail into the material without driving it all the way into the surface. This nailer also adjusts the travel distance of the striking part so that the nail can be struck into the surface of the workpiece, and when the temporarily struck nail is struck, the protruding part acts as a stopper so that the nail can be struck flush with the workpiece. Effect of the Invention

[0007] By using the nail driving device of the present invention, it is possible to drive a nail flush with the material being driven into. [Brief description of the drawings]

[0008] [Figure 1] An example of a nail driving device according to the present invention is shown. [Diagram 2] 1 is a cross-sectional view showing the state in which a nail has been driven into the nail driving device of the present invention. [Diagram 3] The cross-sectional view of the nailing device of the present invention is shown in an enlarged view of the nailing device portion to make it easier to see the state in which the nail has been driven in. Some parts that are not related to the state in which the nail is being driven in are omitted. [Figure 4] 1 is a perspective view of the nailing device of the present invention, in which the nailing device portion is enlarged to show the state in which a nail has been driven in. Some parts that are not related to the state in which the nail is being driven in are omitted. [Diagram 5] 1 is a schematic diagram showing how a nail is driven in by the nail driving device of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples.

[0010] 1. Configuration of the nail driving device of the present invention The nailing device of the present invention (Fig. 1, Fig. 2) is not a hydrostatic nailing device, but a nailing device that strikes and drives nails. It is equipped with a temporary nailing machine 1 that prevents the nail from being driven into the surface of the material into which the nail is to be driven, and a finish nailing machine 2 that drives the temporarily driven nail flush with the surface of the material into which the nail is to be driven.

[0011] (1) Temporary nail guns The following description will be given with reference to Figs. 3 and 4, which show an enlarged view of the nail driver with a portion of the nail driver omitted, and Fig. 5, which shows a schematic diagram of the nail being driven in. The temporary nail gun 1 (Fig. 5(A)) is equipped with a stopper mechanism that limits the travel distance of the striking part (the tip of the rod 3) (Figs. 5(A)(B). The movement of the piston is limited by a cylinder), and the main body is positioned at a height that does not reach the surface of the workpiece 15 when the striking part (the tip of the rod 3) has moved to its limit (Fig. 5(A)→(B)), preventing the nail from being driven into the surface of the workpiece 15 (Fig. 5(B), Fig. 3 right, Fig. 4 right). In other words, this is a nail gun that can only drive nails into the workpiece 15 so that it is slightly raised above the surface. A slightly raised state is more preferably a state in which the nail is raised 1 to 5 mm above the surface of the workpiece 15. The main body refers to the frame of the nail gun, and does not move when driving in a nail. The power source for striking can be any of compressed air, electricity, gas, etc., but a typical nailer uses compressed air to move a piston and a rod integrated with the piston to strike and drive the nail into the nail. When the piston is fully depressed in the cylinder, further movement is restricted. If this nailer is used, it can be made into a temporary nailer of the present invention by positioning the nailer in a position where the striking part (the tip of the rod 3) does not reach the surface of the material 15 to be driven into when the cylinder is fully depressed (Fig. 5(A)(B)). Even if the nailer is positioned in this way, the degree to which the nail floats above the surface of the material to be driven into cannot be precisely adjusted, and some misalignment occurs, but this is not a problem since the finish nailing will be done later.

[0012] The magnitude of the impact force can be set so that even if there is a hard part such as a knot, the nail can penetrate and be driven close to the surface of the material being driven into, and can be fixed at that value. Even if there is no hard part such as a knot, the movement of the striking surface is limited so that the nail can only be driven into a slightly raised position above the surface, so the nail will not be driven in too hard and sink into the material being driven into. Because the value can be fixed, there is no need to worry about the presence or absence of knots in the wood and adjust the magnitude of the impact force when driving nails continuously. Of course, when changing the type of material being driven into, i.e., the type of surface material (plywood, particle board, gypsum board, etc.) or the type of wood being used, the striking force needs to be adjusted, but this does not change the fact that the effort required for adjustment can be significantly reduced. If the nailer is of the compressed air type, the magnitude of the striking force is indicated by the air pressure value.

[0013] (2) Finishing nailers A finishing nailer is a nailer that drives a temporary nail into the material so that the nail is flush with the material it is being driven into. As with a temporary nailer, there is no particular restriction on the power source for striking the nail, but as with a general nailer, compressed air may be used as the power source. The finish nailer 2 has a striking part, which may be, for example, concave (5), and furthermore, does not necessarily have to be integrated with the piston 12 or the rod 4 (Fig. 5(C)). In this case, the rod 4 pushes the striking part 5, which strikes the head of the nail (Fig. 5(C)→(D)). The striking surface 6 of the striking part is larger than the head 13 of the nail, and is of such a size that when the striking surface 6 comes into contact with the head 13 of the nail, the striking surface 6 protrudes from the head 13 of the nail (FIG. 5(D)). There is no particular limitation on the shape of the striking surface, and it may be circular, elliptical, square, or rectangular. Furthermore, it is also conceivable to make it an elongated ellipse so that the striking surface protrudes from the head of the nail only on the left and right. For example, if the head of a general nail is circular and has a diameter of 5 mm, and the striking surface is a circle with a diameter of 7.5 to 15 mm, an ellipse with a long diameter of 7.5 to 15 mm, a square with a side length of 7.5 to 15 mm, or a rectangle with a long side length of 7.5 to 15 mm, the striking surface will be sufficiently protruding from the head of the nail. In addition, because the nail is struck after it has already been driven close to the surface, the distance that the striking part 5 moves, i.e., the stroke, can be made shorter than with a temporary nailer (Fig. 5(C) ⇒ (D)). Reducing the stroke makes it possible to reduce the amount of compressed air used.

[0014] This striking part 5 strikes the nail 14 that has been driven close to the surface (Fig. 5(C)), and when the nail reaches the surface of the material 15 to be driven into (Fig. 5(D)), the part of the striking surface 6 that protrudes from the nail head 13 collides with the surface of the material 15 to be driven into, acting as a stopper, allowing the nail 14 to be driven flush with the surface of the material 15 to be driven into (Fig. 5(D)). With a finish nailer, the force is applied to the surface of the workpiece, so even if the impact force is somewhat large, there is little chance that the impact surface will be embedded in the workpiece. Furthermore, since it is acceptable for the impact force to be somewhat large, the effort of frequently adjusting the impact force can be reduced. The first shot can be made by striking the nail at a point, like with a normal nailer, but the second shot can be made by striking the nail over the surface with this finish nailer, allowing the nail to be driven in flush. Due to the increased time required to drive a nail, it is technically common knowledge that a nailer should only deliver one hit, but by splitting the impact into two, it becomes easier to adjust the impact force, and by widening the impact surface, it is possible to prevent the nail from sinking into the material being driven into. As a result, the nail can be driven into the material accurately and evenly.

[0015] (3) Other configurations (I) In order to drive nails with a finish nailer after provisionally driving nails with a temporary nailer, the finish nailer needs to be in a position where it can drive the provisionally driven nails, so either the finish nailer itself needs to move, or the workpiece needs to be moved. For the former, the nailer can be attached to something like a freely moving arm, and for the latter, something like a conveyor belt can be used to move the workpiece. Of course, both can be combined. For example, in Figure 5, the nails provisionally driven with temporary nailer 1 are moved together with the panel under finish nailer 2 (Figure 5 (B) → (C)), where the nails are finished driven. (II) The nail driving device of the present invention may be incorporated into an automatic sheathing machine, so that the combination of temporary and finish nail driving can be incorporated into a series of automatic operations. (III) As another embodiment of the present invention, it is possible to provide a single nailer having both functions of preliminary nailing and finish nailing. In this case, the striking surface is made as large as that of the finish nailer, and the moving distance of the striking surface can be adjusted in at least two stages. In the case of a compressed air type, for example, a retractable stopper can be attached to the cylinder, and the piston movement can be further restricted by extending the stopper during preliminary nailing and by retracting the stopper during finish nailing, so that the piston can be pushed down to the end.

[0016] 2. Manufacturing method (1) The nailing device of the present invention can be manufactured, for example, by arranging two conventional nailing machines (e.g., MAX Corporation, model number CN-665S2, etc.) side by side and partially modifying them. The temporary nailing machine is placed at a height such that the tip of the rod does not reach the surface of the workpiece when the rod is pushed down completely. The finish nailer has a magazine for supplying nails removed, and a vertically movable striking section 5 having a large striking surface 6 (FIG. 3) attached to the end of the rod that is pressed down. Between the temporary nailer 1 (Fig. 4) and the finish nailer 2, a belt conveyor, for example, may be installed to move the panel in the direction of the arrow (Fig. 4). (2) Alternatively, two freely movable arms may be prepared, and the above-mentioned temporary nailer and finish nailer attached to the ends of the arms. The distance between the nailer and the surface of the workpiece when driving the nails is controlled in the same manner as above. (3) When incorporating it into an automatic sheathing machine, the nail driving device of the present invention can be simply attached in place of a conventional nail driver.

[0017] 3. How to use The magnitude of the impact force of the temporary nailer is fixed according to the type of material being driven into. If it is a compressed air type, the air pressure is fixed. The magnitude of the impact force of the finish nailer is also fixed, but some adjustments may be made depending on the condition of the material being driven into. Then, start the conveyor belt on which the material is being driven into, or start the arm to which the nailer is attached, and start the nailer in sync with this. Then, with the first hit, the nail is driven into a position slightly above the material being driven into (Fig. 5 (A) → (B)), and with the second hit, the nail is driven flush with the material being driven into (Fig. 5 (C) → (D)). When the nailing device of the present invention is incorporated into an automatic sheathing machine, simply set the panel in the automatic sheathing machine and start it, and the nails will be automatically driven flush into the required locations. Furthermore, if you use an automatic router sheathing machine, you can automatically perform everything from cutting out the opening in the panel to nailing. [Industrial Applicability]

[0018] The nail driving device of the present invention is capable of driving nails flush into the material being driven, and is therefore useful in the building materials industry, for example, in the manufacture of wall panels and floor panels, which include a process of driving nails into surface materials, and is also useful in the wood processing machinery industry, which manufactures such devices. [Explanation of symbols]

[0019] 1. Temporary nailer 2 Finishing nailer 3. Temporary nailer rod 4 Finish nailer rod 5. Impact section of finishing nailer 6. Striking surface of the finishing nailer 7. Another stop mechanism for finishing nailers 11 Piston of temporary nailer 12 Finish nailer piston 13 Nail Head 14 nails 15 Material to be driven

Claims

1. This is a nailing device that strikes the head of a nail with a striking part to drive the nail into the nail. A temporary nailer having a stopper mechanism for limiting the moving distance of the striking part, and a main body is disposed at a height where the striking part does not reach the surface of the workpiece when the striking part moves to the limit, so that the nail cannot be driven into the surface of the workpiece. A finishing nailer having a striking part structured such that when it comes into contact with the head of a nail, the striking surface protrudes from the head of the nail, and when striking, the protruding part acts as a stopper, allowing the temporarily driven nail to be driven flush with the material being driven into the nail; A nail driving device comprising:

2. A nailing device that has a piston that is driven by compressed air, and that drives a nail by moving a striking part with the piston to strike the head of the nail, A temporary nailer in which the main body is disposed at a height such that the striking part does not reach the surface of the workpiece when the piston is fully depressed, thereby preventing the nail from being driven into the surface of the workpiece; A finishing nailer having a striking part structured such that the striking surface protrudes from the head of the nail when it comes into contact with the head of the nail, and when striking, the protruding part becomes a stopper, so that the temporarily driven nail can be driven in so that it is flush with the material to be driven in. A nail driving device comprising:

3. This nail gun strikes the head of the nail with a striking part to drive the nail into the nail. The nail driver includes an adjustment mechanism for adjusting the travel distance of the impact part, and a striking part structured such that a striking surface protrudes beyond the head of the nail when the impact part comes into contact with the head of the nail, By adjusting the travel distance of the striking part, it is possible to temporarily drive the nail into the material without driving it all the way into the surface. This nailer also adjusts the travel distance of the striking part so that the nail can be struck into the surface of the workpiece, and when the temporarily struck nail is struck, the protruding part acts as a stopper so that the nail can be struck flush with the workpiece.

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