Screw driving device

Abstract

To provide a screw driving device capable of reducing worker's load.SOLUTION: A screw driving device 1 comprises a screw driving mechanism 4 and an elevating / lowering mechanism 2 for vertically elevating / lowering the screw driving mechanism 4. The screw driving mechanism 4 comprises: a screw holding part 45 capable of holding and releasing a screw B; a guide part 42 for switching between a holding state where the screw holding part 45 holds the screw B and a releasing state where the screw B is released; a screw driving part 40 by which the screw B is driven to a driving face F; and a spike part 55 for resisting reaction force, when the screw driving part 40 drives the screw B.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a screw driving device. [Background technology]

[0002] Conventionally, wooden decks have been joined together or a wooden deck and a wooden beam have been joined by driving in screws (see Patent Document 1 below). A worker holds a screw in one hand and drives the screw in with a power tool using the other hand. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 6-182709 Summary of the Invention [Problem to be solved by the invention]

[0004] In automatic loading power tools, the screws are arranged in a continuous tape shape, but there are limitations on the length and thickness of the screws, and they cannot handle long or thick screws. In addition, there is a problem that the vibration and counter torque caused by the power tool puts excessive strain on the worker's arms and hands. There is a demand for an automatic screw driving device that can also handle long screws, such as those over 135 mm in length or φ6 mm in diameter.

[0005] Therefore, the present invention has been made in consideration of the above circumstances, and provides a screw driving device that can reduce the burden on an operator. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention employs the following means. In other words, the screw driving device of the present invention comprises a screw driving mechanism that drives screws into an installation surface, and a lifting mechanism that raises and lowers the screw driving mechanism in an up and down direction. The screw driving mechanism has a screw holding section that can hold and release a screw, a guide section that switches the screw holding section between a holding state in which it holds the screw and a release state in which it releases the screw, a screw driving section that drives the screw into a driving surface, and a spike section that resists the reaction force when the screw driving section drives the screw.

[0007] In a screw driving device configured in this way, the lifting mechanism positions the screw driving part of the screw driving mechanism at a predetermined position in the vertical direction. The reaction force generated when driving a screw is resisted by the spike part. Therefore, the shock generated when driving a screw is absorbed by the spike part, which reduces the strain on the worker's arms, hands, etc.

[0008] In the screw driving device according to the present invention, the spike portion may be disposed along the driving surface.

[0009] In a screw driving device configured in this manner, the spike portions can be easily installed because they can resist the reaction force by being positioned along the driving surface.

[0010] In the screw driving device according to the present invention, the spike portion may be capable of contacting the driving surface by applying a load with a foot to the operating portion.

[0011] In the screw driving device configured in this way, the spike is placed on the driving surface when the worker places his / her foot on the operating part and applies a load. This makes it possible to resist the reaction force generated when the screw is driven in in a simple manner.

[0012] The screw driving device according to the present invention may further include an angle adjustment mechanism for adjusting the angle of the screw driving mechanism.

[0013] With a screw driving device configured in this way, screws can be driven at a desired angle. Effect of the Invention

[0014] The screw driving device according to the present invention can reduce the burden on workers. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a side view showing a screw driving device according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a front view showing a screw driving device according to an embodiment of the present invention. [Diagram 3] 1 is a side view showing a state in which a screw driving device according to an embodiment of the present invention is tilted. FIG. [Figure 4] 1 is a front view showing a screw driving operation of a screw driving device according to an embodiment of the present invention. FIG. [Diagram 5] 5 is a front view showing a screw driving operation of the screw driving device according to one embodiment of the present invention, showing a step subsequent to that shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A screw driving device according to one embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a side view showing a screw driving device according to one embodiment of the present invention, and Fig. 2 is a front view showing the screw driving device according to one embodiment of the present invention. As shown in FIGS. 1 and 2, the screw driving device 1 includes a support base 10, a lifting mechanism 2, an angle adjustment mechanism 3, and a screw driving mechanism 4.

[0017] The worker stands on the opposite side of the lifting mechanism 2 across the screw driving mechanism 4 shown in Fig. 1, facing the screw driving mechanism 4. The direction the worker faces (left side of the paper in Fig. 1) is the front side, and the opposite side (right side of the paper in Fig. 1) is the rear side, and the horizontal direction connecting the front side and the rear side is the front-to-rear direction. The horizontal direction perpendicular to the front-to-rear direction is the width direction.

[0018] A plurality of casters 11 capable of rotating along the driving surface F are provided on the underside of the support base 10.

[0019] The lifting mechanism 2 is installed above the support base 10. The lifting mechanism 2 raises and lowers the screw driving mechanism 3 in the vertical direction. As shown in Fig. 2, the lifting mechanism 2 has a pair of upper and lower rods 21, a connecting rod 22, and a lifting cylinder 24.

[0020] The upper and lower rods 21 extend in the vertical direction from the support base 10. The pair of upper and lower rods 21 are arranged spaced apart in the width direction. The connecting rod 22 connects the upper ends of the pair of upper and lower rods 21. The lifting cylinder 24 is supported by the connecting rod 22. The lifting cylinder 24 supports the screw driving section 40 of the screw driving mechanism 4 so that it can move in the vertical direction.

[0021] The angle adjustment mechanism 3 adjusts the installation angle of the lifting mechanism 2. The angle adjustment mechanism 3 has a first angle adjustment part 31 and a second angle adjustment part .

[0022] The first angle adjustment unit 31 supports the lower part of the upper and lower rods 21. As shown in FIG. 1, the first angle adjustment unit 31 has a support plate 32 and a connecting shaft 34. The support plate 32 is connected to the upper part of the support base 10. The support plate 32 has an insertion hole 33 that penetrates in the width direction and extends in an arc shape. The insertion hole 33 is inserted with the connecting shaft 34 that is connected to the lower part of the upper and lower rods 21. The connecting shaft 34 can move in the length direction of the insertion hole 33. The head of the connecting shaft 34 is larger than the width of the insertion hole 33 and is engaged with the insertion hole 33. The connecting shaft 34 is positioned at a desired position of the insertion hole 33 by a locking part (not shown).

[0023] As shown in FIG. 2, the second angle adjustment portion 36 supports the lower end of the upper and lower rods 21 so as to be rotatable about a rotation axis facing in the width direction.

[0024] FIG. 3 is a side view showing the screw driving device 1 in an inclined state. As shown in FIG. 3, when the connecting shaft 34 moves rearward within the insertion hole 33 and the lifting mechanism 2 tilts so that the upper portions of the upper and lower rods 21 face rearward, the screw driving mechanism 4 connected to the lifting mechanism 2 also tilts.

[0025] As shown in FIG. 2, the screw driving mechanism 4 has a screw driving portion 40, a shaft 41, a guide portion 42, a screw holding portion 45, and a spike portion 55.

[0026] The screw driving unit 40 is configured to drive a screw B into a driving surface F. The screw driving unit 40 is a well-known component of a compressor or the like. The screw driving unit 40 is provided so as to be movable in the vertical direction together with a base unit 50 connected to the upper and lower rods 21, etc., and separately from the base unit 50.

[0027] The shaft 41 is connected to the lower part of the screw driving part 40. The guide part 42 is connected to the shaft 41. The guide part 42 is supported by a guide support part 51 provided on the base part 50. The screw driving part 40, the shaft 41 and the guide part 42 can move integrally in the up and down direction by the operation of the lifting cylinder 24.

[0028] The screw holding portion 45 is capable of holding and releasing the screw B. The screw holding portion 45 has an arm support portion 46, a pair of arms 47, and an arm connection portion 48.

[0029] The arm support portion 46 supports the upper ends of the pair of arms 47. The arm support portion 46 may be configured to support an upper portion of the screw B. For example, the arm support portion 46 may have a through hole that penetrates therethrough in the vertical direction, and the screw B may be inserted into the through hole of the arm support portion 46.

[0030] The arm 47 is bent at the middle in the up-down direction. The pair of arms 47 are arranged in an X shape when viewed from the front. The intersecting portion of the pair of arms 47 is supported by the arm support portion 46 so as to be rotatable about an axis facing in the front-rear direction. The upper end portion of the arm 47 is supported by the arm support portion 46 so as to be rotatable about an axis facing in the front-rear direction. In the state shown in FIG. 2, the lower ends of the pair of arms 47 are close to each other and hold the screw B.

[0031] The spike portion 55 is disposed along a driving surface F into which the screw B is driven. The spike portion 55 is formed in a flat plate shape. The plate surface of the spike portion 55 faces in the vertical direction.

[0032] The spikes 55 are connected to the operating part 56 via the spike connectors 57. When an operator places his / her foot on the operating part 56 and applies a load, the spikes 55 descend and the lower surfaces of the spikes 55 can contact the driving surface F.

[0033] Next, the operation of driving screws using the screw driving device 1 will be described. 2, the screw driving device 1 is moved and set in a predetermined position with the spike portion 55 separated from the driving surface F. Once the driving position of the screw B has been determined, the operating part 56 is stepped on to make the spike portion 55 contact the driving surface F.

[0034] The lower ends of the pair of arms 47 of the screw holding part 45 are brought close to each other, and the screw B is held by the screw holding part 45. As shown in Figure 4, the lifting cylinder 24 of the lifting mechanism 2 is lowered, which in turn lowers the base part 50, the guide support part 51, the screw driving part 40, the shaft 41, the guide part 42, and the screw holding part 45. When the lower end of the base part 50 touches the driving surface F, the arm support part 46 does not lower any further.

[0035] As shown in FIG. 5, the screw driving unit 40, the shaft 41, and the guide unit 42 continue to move downward. The lower end of the guide unit 42 enters between the upper ends of the pair of arms 47, and the upper ends of the pair of arms 47 move in a direction away from each other. As a result, the lower ends of the pair of arms 47 also move in a direction away from each other, releasing the screw B. In other words, the guide unit 42 can switch between a holding state in which the screw holding unit 45 holds the screw B and an releasing state in which the screw B is released. When a pressing unit (not shown) connected to the screw driving unit 40 directly drives the screw B downward, the screw holding unit 45 releases the screw B, and the screw B is driven into the driving surface F. At this time, the spike unit 55 is in contact with the driving surface F, so the screw driving device 1 can resist the reaction force generated when the screw B is driven.

[0036] The screw driving device 1 is moved to the next screw driving location using the casters 11, and the next screw is driven in.

[0037] In the screw driving device 1 configured in this manner, the lifting mechanism 2 positions the screw driving part 40 of the screw driving mechanism 4 at a predetermined position in the vertical direction. The reaction force generated when driving the screw B is resisted by the spike part 55. Therefore, the impact generated when driving the screw B is absorbed by the spike part 55, which reduces the strain on the worker's arms, hands, etc.

[0038] Furthermore, if the spike portion 55 is arranged along the driving surface F, it can withstand the reaction force, and therefore the spike portion 55 can be easily installed.

[0039] Furthermore, when an operator places his / her foot on the operation portion 56 and applies a load, the spike portion 55 is placed on the driving surface F. This makes it possible to resist the reaction force generated when the screw B is driven in, in a simple manner.

[0040] Moreover, by adjusting the angle of the angle adjustment mechanism 3, the screw B can be driven in at a desired angle.

[0041] The shapes and combinations of the components shown in the above-described embodiment are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention.

[0042] The "Sustainable Development Goals (SDGs)" are 17 international goals that were adopted at the United Nations Summit in September 2015. The screw driving device 1 according to this embodiment can contribute to achieving one of the 17 SDGs, for example goal 9 "Build resilient infrastructure, promote industry, innovation and infrastructure." [Explanation of symbols]

[0043] 1 Screw driving device 2 Lifting mechanism 3 Angle adjustment mechanism 4 Screw driving mechanism 40 Screw driving section 42 Guide section 45 Screw holder 55 Spikes 56 Operation section B Vis F Driving surface

Claims

1. A screw driving mechanism; a lifting mechanism for lifting the screw driving mechanism in a vertical direction, The screw driving mechanism includes: A screw holding portion capable of holding and releasing a screw; a guide portion that switches between a holding state in which the screw holding portion holds the screw and a release state in which the screw is released; A screw driving portion that drives the screw into a driving surface; and a spike portion that resists a reaction force generated when the screw driving portion drives the screw.

2. The screw driving device according to claim 1 , wherein the spike portion is disposed along the driving surface.

3. 3. The screw driving device according to claim 1, wherein the spike portion can be brought into contact with the driving surface by applying a load with a foot to the operating portion.

4. The screw driving device according to claim 1 or 2, further comprising an angle adjustment mechanism for adjusting the angle of the screw driving mechanism.

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