Assembly machine

Abstract

To provide a coupling machine for stably taking out, a coupling part from a supply part.SOLUTION: There is provided a coupling machine comprising: a supply unit 20 which is configured to make a coupling part N having, a head N1 and a leg N2, wait at a prescribed standby position; and a tool unit 30 which has a suction pipe 33 for sucking the coupling part N which waits at the standby position. The supply unit 20 has: a suspension member 27 having, a suspension groove 271 for suspending the coupling part N. The suspension member 27 has an insertion protrusion 272 for projecting upward, an opening of the suspension groove 271, and the insertion protrusion 272 is formed in a size at which the insertion protrusion 272 can enter the suction pipe 33, in the coupling machine 10.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a fastening machine capable of stably taking out fastening parts from a supply unit. [Background technology]

[0002] A conventional fastening machine for fastening fastening parts having a head and a foot to a predetermined fastening position is disclosed in Patent Document 1. As shown in Fig. 9, this fastening machine includes a hanging member 27 having a hanging groove 271 for hanging the fastening part, a tool unit including a suction pipe 33 for sucking fastening parts supplied to a standby position by the supply unit, and a position control mechanism for moving the tool unit. After the fastening parts are sucked and held by the suction pipe 33, the position control mechanism is driven to move the tool unit together with the fastening parts above the fastening position. A fastening machine configured in this way so that the suction pipe 33 picks up fastening parts supplied to the standby position has the advantage of being able to fasten parts in a relatively narrow space because a separate holding mechanism for holding the fastening parts, such as the chuck unit disclosed in Patent Document 2, is not arranged around the suction pipe 33. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-59816 [Patent Document 2] Patent No. 3431815 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in a conventional fastening machine, if a fastening part N has a disk-shaped seat portion N3 on the seat surface of the head part N1 or if a washer is attached as shown in Fig. 9, when the fastening part is sucked by the suction pipe 33, the seat portion N3 or the washer may be pinched between the lower end of the suction pipe 33 and the suspended member. Since the fastening part N with the seat portion N3 or the washer pinched in this way is not sucked into the suction pipe 33 in the correct posture, there are problems such as not being able to remove the fastening part N from the suspended member 27 or being sucked in an unstable posture and falling off while the suction pipe 33 is moving. This also causes problems such as poor screw tightening. [Means for solving the problem]

[0005] The present invention was conceived in consideration of the above-mentioned problems, and aims to provide a fastening machine capable of reliably suctioning screws. To achieve this objective, the present invention provides a fastening machine including a supply unit configured to hold fastening components having heads and legs at a predetermined standby position, and a tool unit having a suction pipe for suctioning the fastening components at the standby position. The supply unit includes a hanging member having a hanging groove formed therein for suspending the fastening components, and the hanging member has an insertion protrusion formed thereon so as to protrude upward through an opening of the hanging groove, the insertion protrusion being configured to be large enough to enter the suction pipe. Preferably, the insertion protrusion is shorter than the leg of the fastening component. The supply unit also preferably includes a supply rail for transporting the fastening components to the hanging groove and a reciprocating drive source for reciprocatingly sliding the hanging member in a direction intersecting the supply rail. Furthermore, the hanging member preferably includes a blocking protrusion for blocking the tip of the supply rail when the hanging groove is moved to the standby position by the drive of the reciprocating drive source. Furthermore, it is preferable that the tool unit further includes a frame that guides the reciprocating sliding of the suspension member driven by the reciprocating drive source, and that the frame is provided with a matching protrusion that can mate with the insertion protrusion and enter the suction pipe when the suspension groove moves to the standby position. Furthermore, it is preferable that the insertion protrusion has a diameter smaller than the outer diameter of the head of the fastening part. Furthermore, it is preferable that a washer is attached to the leg of the fastening part, and that the insertion protrusion has a diameter smaller than the outer diameter of the washer. It is also preferable that the lower end opening of the suction pipe has an enlarged diameter portion that gradually increases in diameter downward. Furthermore, it is preferable that the tool unit further includes a position control mechanism that drives the tool unit to move up and down, and that the position control mechanism lowers the tool unit to a predetermined height that is set so that the lower end opening of the suction pipe is located below the upper surface of the insertion protrusion and does not abut on the periphery of the insertion protrusion.Furthermore, it is preferable that the tool unit has a fastening tool that is configured to be freely raised and lowered and rotatable within the suction pipe and whose lower end is configured to be able to engage with the head of the fastening part, and that the position control mechanism stops the tool unit at a height where the fastening tool does not come into contact with the head of the fastening part. [Effects of the Invention]

[0006] According to the above invention, the suction pipes are attached to the insertion protrusions provided around the suspension holes that support the fastening components, preventing the fastening components from being pinched between the suction pipes and the suspension member. This provides advantages such as reliable suction and holding of the fastening components. Furthermore, because the insertion protrusions are shorter than the legs of the fastening components, the fastening components will not fall off the suspension grooves while moving. Furthermore, because the suspension member is driven by the reciprocating drive source, the distance between the next fastening component and the suspension member is large, ensuring reliable suction of each component. Furthermore, because the suspension member is provided with a blocking protrusion that blocks the front end of the transport means, the next fastening component will not fall off the front end of the transport means when the suspension groove is positioned in the standby position. Furthermore, because the fastening components are supported by both the insertion protrusions and the matching protrusions, the posture of the fastening components is more stable during suction. Furthermore, since the outer diameter of the insertion protrusion is smaller than the outer diameter of the head of the fastening part or the outer diameter of the washer, the hole diameter of the suction pipe can be made to match the fastening part, preventing the fastening part from shifting position after suction. Furthermore, since the lower end opening of the suction pipe is formed with an enlarged diameter portion, there is an advantage that the fastening part can easily enter the suction pipe. Furthermore, since the position control mechanism stops the descent of the suction pipe so that its lower end opening is located below the upper surface of the insertion protrusion and so that the lower end opening does not abut against the periphery of the insertion protrusion, there are advantages such as allowing the fastening part to enter the suction pipe but preventing the suction pipe from abutting against the periphery of the insertion protrusion. Furthermore, since the position control mechanism stops the descent of the suction pipe so that the fastening tool of the tool unit and the fastening part do not come into contact with each other, there is an advantage such that collision and damage to them during descent can be prevented. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a side view showing a fastening machine according to the present invention; [Figure 2] FIG. 1 is a plan view showing a fastening machine according to the present invention. [Figure 3] 10A and 10B are enlarged plan views of the main parts showing the operation of the supply unit according to the present invention. [Figure 4] 4 is an enlarged plan view of a main part showing an operation of transitioning from FIG. 3 to the next state. FIG. [Figure 5] 4 is an enlarged, partially cross-sectional side view of a main part taken along line AA in FIG. 3. [Figure 6] 5 is an enlarged, partially cross-sectional side view of a main part taken along line BB in FIG. 4. [Figure 7] 5 is an enlarged, partially cross-sectional side view of a main part taken along line CC in FIG. 4. [Figure 8] FIG. 8 is an enlarged, partially cross-sectional side view of a portion D in FIG. 7. [Figure 9] 10 is an enlarged side view of a main part of a conventional supply unit, showing a state in which a seat portion of a screw is sandwiched between a suction pipe and a hanging member. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] 1 and 2, reference numeral 10 denotes a fastening machine that fastens a screw N, which is an example of a fastening part, into a workpiece (not shown), and includes a supply unit 20 that supplies the screw N to a preset standby position, a tool unit 30 that sucks and holds the screw N supplied from the supply unit 20, a position control mechanism 40 that reciprocates the tool unit 30 between the standby position and a predetermined fastening position, and a control unit 50 that controls the driving of these components.

[0009] The screw N has a head N1 and a leg N2 formed integrally, and the head N1 of the screw N has a rounded curved portion that protrudes upward and a disk-shaped seat N3 that is continuous with the curved portion.

[0010] The supply unit 20 has a supply rail 21 extending in the front-rear direction, which is an example of a conveying means, and a cutting section 22 disposed in front of the supply rail 21. The supply rail 21 of the supply unit 20 is composed of two plates extending in the front-rear direction, and these plates are installed with a predetermined gap between them that is slightly wider than the outer diameter of the leg portion N2 of the screw N and narrower than the outer diameter of the head portion N1. Therefore, the supply rail 21 can support the screw N in a suspended state with the bearing surface of the head portion N1 abutting against its upper surface. A vibrator (not shown) is connected to the supply rail 21, and the suspended and supported screw N is transported forward by the vibration of the vibrator. A storage section (not shown) capable of storing a large number of screws N is connected to the rear of the supply rail 21, and this storage section is configured to supply the screws N in a line onto the supply rail 21.

[0011] On the other hand, the cutting section 22 has a frame 23 extending in a direction perpendicular to the supply rail 21 (hereinafter referred to as the lateral direction), a hanging member 27 disposed within the frame 23 for suspending and supporting the screws N, and a cleaning section 29 for cleaning the screws N suspended and supported by the hanging member 27. The frame 23 of the cutting section 22 is formed with a supply port 231 that opens to the rear as shown in FIG. 3. The terminal end of the supply rail 21 enters this supply port 231, and a notched groove 232 extending in the lateral direction is continuous with the supply port 231 in front of it. One lateral end of this notched groove 232 is closed by the side wall 24, and an intake hole 233 is formed in the bottom surface of the notched groove 232, penetrating downward on the side away from the side wall 24 than the supply port 231 (hereinafter referred to as the opening side). A cover member 25 is fixed to the top surface of the frame 23 closer to the side wall 24 than the supply port 231, and a detection sensor 26 is fixed to the opening side of the supply port 231. The detection sensor 26 is a pair of optical sensors that emit detection light from a light-emitting side to a light-receiving side, and is disposed so that the detection light passes above the intake hole 233. For this reason, when a screw N positioned above the intake hole 233 reaches the intake hole 233 as shown in Figures 4 and 7, the detection light is blocked by the head N1 of the screw N, and the control unit 50 detects the screw N.

[0012] The suspending member 27 is disposed within the notched groove 232, and its thickness in the front-to-rear direction is configured to be approximately the same as the groove width of the notched groove 232, so that it can slide laterally along the notched groove 232. A substantially U-shaped suspending groove 271 that penetrates vertically is cut out in the rear surface of the suspending member 27. The width of the suspending groove 271, like the supply rail 21, is configured to be slightly wider than the outer diameter of the leg portion N2 of the screw N and narrower than the outer diameter of the head portion N1, so that the screw N can be suspended and supported. The cutout portion 22 is also provided with a cylinder 28 that reciprocates the suspending member 27 along the notched groove 232. The cylinder 28 is fixed to the side wall 24, and its piston rod is connected to the suspending member 27. The stroke of this cylinder 28 is set to a dimension such that when the piston rod is contracted, the hanging groove 271 of the hanging member 27 is continuous with the supply rail 21 as shown in Figures 1 and 2, and when the piston rod is extended, the hanging groove 271 is continuous with the intake hole 233 of the frame 23 as shown in Figures 3 and 4.

[0013] Furthermore, an insertion protrusion 272 having a generally D-shape in plan view is formed on the upper surface of the hanging member 27 so as to protrude the upper opening of the hanging groove 271 upward. This insertion protrusion 272 is configured to have a diameter slightly smaller than the outer diameter of the head N1 of the screw N and a length dimension in the vertical direction shorter than the length dimension of the leg N2 of the screw N, and is configured so that its upper surface can be continuous with the upper surface of the supply rail 21, as shown in FIG. 5. With this configuration, when the hanging groove 271 is continuous with the supply rail 21, the hanging member 27 can receive and suspend the foremost screw N on the supply rail 21. Furthermore, the hanging member 27 is provided with a blocking protrusion 273 at a location that is located in front of the supply rail 21 when the hanging groove 271 reaches a position continuous with the intake hole 233 (hereinafter referred to as the standby position) as shown in FIG. 6, this sealing protrusion 273 is configured to be at the same height as the insertion protrusion 272, and while the hanging groove 271 is on standby at the standby position, it seals the front of it to prevent the screws N on the supply rail 21 from falling out of the supply rail 21. Incidentally, a matching protrusion 234 is formed around the standby position of the frame 23 to form a cylindrical shape with an outer diameter that matches with the insertion protrusion 272 and can enter a suction pipe 33, which will be described later.

[0014] The cleaning unit 29 includes an intake hose 291 connected to an intake hole 233 formed in the frame 23, and an intake means 292 connected to the intake hose 291, and is configured to be able to suck air from the intake hole 233 via the intake hose 291 by driving the intake means 292. The intake hose 291 also has a filter (not shown) midway along its length, and is configured to be able to remove dust and the like from the sucked air when driven as described below.

[0015] 1, the tool unit 30 includes a driver bit 31 that can be fitted with a screw N, a tightening motor 32 that rotates the driver bit 31, and a suction pipe 33 that houses the driver bit 31 and allows it to reciprocate in the axial direction and rotate freely inside. The suction pipe 33 is biased downward by a cushion spring (not shown), and is configured so that, when the cushion spring flexes, the suction pipe 33 moves axially relative to the driver bit 31 and the tightening motor 32. In addition, a suction means (not shown), such as a vacuum generator, is connected to the suction pipe 33, and when the suction means is driven, the screw N can be sucked and held at the opening at its lower end.

[0016] The suction pipe 33 has an air vent hole 331 extending therethrough in the axial direction, the hole diameter of which is slightly larger than the outer diameter of the driver bit 31 and smaller than the outer diameter of the head N1 of the screw N, and a head holding hole 332 is continuous with the lower end of the air vent hole 331. The head holding hole 332 has a hole diameter slightly larger than the outer diameter of the head N1 of the screw N, and its lower end opening is formed with an enlarged diameter portion 333 which gradually enlarges in diameter as it extends downward. The driver bit 31 is configured so that its lower end is located within the air vent hole 331, and the cushion spring is set to bend to a size that allows the driver bit 31 to protrude from the lower end of the suction pipe 33.

[0017] The position control mechanism 40 includes a linear arm 41 that can move linearly in the forward / backward direction, a swivel arm 42 that is rotatably mounted on the linear arm 41, and an elevation drive unit 43 attached to the tip of the swivel arm 42. The elevation drive unit 43 includes a ball screw 44 that extends in the vertical direction, an elevation motor 45 that rotates the ball screw 44, and a drive nut 46 that threadably engages with the ball screw 44. The drive nut 46 is connected to the tool unit 30. Driven by the position control mechanism 40 configured in this manner, the tool unit 30 can be raised and lowered as indicated by the two-dot chain line in FIG. 1 and can move within a movable range 301 shown in FIG. 2. The supply unit 20 is disposed so that at least the standby position of the screw N is located within the movable range 301. The position control mechanism 40 is configured to lower the suction pipe 33 to a predetermined suction height as shown in FIG. 8 when the screw N is suctioned by the suction pipe 33. This suction height is set so that the lower end of the suction pipe 33 is positioned between the upper surface of the insertion protrusion 272 of the supply unit 20 and the peripheral portion 274 (hereinafter referred to as the lower portion 274) of the insertion protrusion 272, and so that the boundary portion between the ventilation hole 331 and the head holding hole 332 does not come into contact with the seat portion N3 of the screw N, nor the lower end of the driver bit 31 does not come into contact with the head N1 of the screw N.

[0018] Next, the operation of the supply unit 20 configured as above will be described. When a drive signal is input, control unit 50 drives the vibrator and retracts the piston rod of cylinder 28 as shown in FIG. 1 . This vibrates supply rail 21, and screw N suspended and supported on supply rail 21 is vibrated and conveyed forward, while hanging groove 271 of hanging member 27 connects to the terminal end of supply rail 21. Therefore, the leading screw N is transferred from the terminal end of supply rail 21 to hanging groove 271. Once screw N is transferred to hanging groove 271, control unit 50 extends the piston rod of cylinder 28 and moves hanging member 27 to the standby position. At this time, because the axial length of insertion protrusion 272 is set to be shorter than the length of leg N2 of screw N as described above, leg N2 of screw N is always held by hanging groove 271 and the groove wall of notch groove 232 located behind it. Therefore, the screw N will not fall out of the hanging groove 271 while moving to the standby position.

[0019] Thereafter, when the hanging member 27 reaches the standby position and the hanging groove 271 connects to the intake hole 233, the head N1 of the screw N suspended and supported in the lower groove 271 blocks the detection light of the detection sensor 26, as shown in FIG. 3 . When the detection light of the detection sensor 26 is blocked, the control unit 50 drives the intake means 292 to suck in air from the intake hole 233 and the hanging groove 271 connected to the intake hole 233. This causes air to flow into the hanging groove 271 from gaps between the seating surface of the screw N and the upper surface of the hanging member 27, and the flowing air passes through the hanging groove 271 with great force. As a result, deposits such as chips and dust adhering to the surfaces of the head N1 and leg N2 of the screw N are removed from the surfaces. The deposits removed from the surfaces of the screw N are carried by the air and collected in the cleaning unit 29.

[0020] Because the supply unit 20 is configured to suck in chips and other debris adhering to the screw N using the suction means 292, debris removed from the screw N does not scatter to the surrounding area, and of course is prevented from adhering to the preceding or following screw N. Furthermore, because the rear side of the hanging groove 271 is closed by the groove wall of the notched groove 232 when the cleaning unit 29 is driven, even if the amount of air suctioned by the suction means 292 is relatively small, the flow rate within the hanging groove 271 is sufficient to remove debris. This requires relatively little energy for driving, enabling efficient driving. Deposits collected from the surface of the screw N are removed from the air by a filter installed midway through the suction hose 291. This allows air free of debris to be discharged.

[0021] Furthermore, when the detection light of the detection sensor 26 is blocked as described above, the control unit 50 outputs a drive command to the position control mechanism 40. As a result, the position control mechanism 40 drives the linear motion arm 41 and the rotary arm 42 to horizontally move the suction pipe 33 above the hanging groove 271. When the suction pipe 33 reaches above the hanging groove 271, the control unit 50 outputs a drive command to the ball screw 44 to lower the suction pipe 33 toward the screw N.

[0022] As described above, when the suction pipe 33 descends, the suction height of the suction pipe 33 is set so that the lower end of the suction pipe 33 is lower than the upper surface of the insertion protrusion 272 of the supply unit 20, and therefore the suction pipe 33 that has reached the suction height covers the insertion protrusion 272 and the mating protrusion 234, as shown in FIG. 8. Since the suction pipe 33 covers the insertion protrusion 272 in this manner, the screw N suspended and supported in the hanging groove 271 is similarly accommodated in the head holding hole 332 of the suction pipe 33. Therefore, as shown in FIG. 9, the head N1 of the screw N is not pinched between the suction pipe 33 and the hanging member 27, and the head N1 of the screw N can be reliably accommodated in the suction pipe 33. Furthermore, because the suction pipe 33 descends to the aforementioned suction height and the enlarged diameter portion 333 is formed at the lower end of the suction pipe 33, even if the screw N and the suction pipe 33 are slightly misaligned, the screw N is pressed against the inclined surface of the enlarged diameter portion 333 of the descending suction pipe 33. As a result, the screw N moves toward the center so as to align with the suction pipe 33, and is reliably housed within the head holding hole 332. Furthermore, because the screw N is supported by both the insertion protrusion 272 and the matching protrusion 234, it is sucked and held by the suction pipe 33 without tilting. Furthermore, the screw N is sucked by the suction means 292, and is prevented from being ejected to the outside even in the event of an unexpected impact, so that the screw N is reliably sucked into the suction pipe 33. Moreover, the suction height of the suction pipe 33 is configured as described above so that the screw N, the driver bit 31, and the screw N do not collide with the lower end of the suction pipe 33 and the lower step 274 around the insertion protrusion 272, or with the boundary between the ventilation hole 331 and the head holding hole 332, and therefore damage to the suction pipe 33, the screw N, etc. due to such a collision is prevented.

[0023] As described above, when the suction pipe 33 reaches a predetermined suction height, the control unit 50 stops the air intake means 292 and activates the suction means. This draws air into the suction pipe 33, sucking the screw N into the suction pipe 33. At this time, because the head holding hole 332 is formed in the suction pipe 33 and the lower end of the driver bit 31 is housed in the ventilation hole 331, the seat N3 of the picked screw N can abut against the boundary between the head holding hole 332 and the ventilation hole 331. This allows the screw N to be sucked and held in a stable position. Furthermore, because the outer diameter of the insertion protrusion 272 is smaller than the outer diameter of the head N1 of the screw N, and the diameter of the head holding hole 332 in the suction pipe 33 can be set slightly larger than the outer diameter of the head N1 of the screw N, the screw N is less likely to shift position within the head holding hole 332. As a result, the screw N can be easily inserted into the pilot hole in the workpiece, and the driver bit 31 and the screw N can easily fit together during the screw tightening operation. Once the screw is suction-held by the suction pipe 33 in this manner, the control unit 50 reversely drives the ball screw 44 to raise the suction pipe 33 and removes the screw N suction-held by the suction pipe 33 from the hanging groove 271. Thereafter, the control unit 50 drives the linear motion arm 41 and the rotating arm 42 to transport the suction pipe 33 and the screw N to a predetermined tightening position, where the screw is tightened. Furthermore, once the screw N has been removed from the hanging groove 271 by the fastening device and the detection light between the detection sensors 26 can pass, the control unit 50 retracts the piston rod of the cylinder 28. This causes the hanging groove 271 to reconnect with the supply rail 21, making it possible to receive the next screw N.

[0024] The fastening machine 10 according to the present invention is not limited to the above-described configuration and various modifications are possible without departing from the spirit of the invention. For example, the tool unit 30 and the position control mechanism 40 may be configured as an articulated robot arm, an Cartesian robot, or other configurations as long as they are equipped with and move the suction pipe 33. Furthermore, the cylinder 28 that reciprocates the hanging member 27 of the supply unit 20 may be configured as a reciprocating linear drive source. Furthermore, the frame may be provided with a shock absorber (not shown) or the like at the opening on the opposite side of the side wall 24 of the notched groove 232 to stop the hanging member 27 by abutting against it. By stopping the hanging member 27 by abutting against this shock absorber (not shown), the hanging member 27 can be stopped more accurately at the standby position. Furthermore, the lower step 274 may have any shape as long as the suction pipe 33 can cover the insertion protrusion 272. Similarly, the blocking protrusion 273 may have any shape as long as it can block the front of the supply rail 21.

[0025] Furthermore, the fastening component is not limited to the screw N, as long as it has a head N1 and a leg N2. It can also be a rivet, a stud bolt, or other components. A disk-shaped washer (not shown) can be attached to the leg N2 instead of the seat N3 on the head N1. If the fastening component has a washer, the outer diameter of the insertion protrusion 272 is preferably smaller than that of the washer, and the head holding hole 332 of the suction pipe 33 is preferably larger than that of the washer. This allows fastening components with a washer to be removed in the same way as the screw N. Furthermore, when changing the fastening component, it is preferable to change the driver bit 31 to a fastening tool suitable for the fastening component. Similarly, the shapes of the insertion protrusion 272 and the mating protrusion 234 are preferably changed appropriately to match the shapes of the fastening component and the suction pipe 33. Other shapes, such as a non-circular shape in plan view, are also acceptable. [Explanation of symbols]

[0026] 10 … Fastening machine 20 … supply unit 21... Means of transport 23...frame 232... Notched groove 234...Matching protrusion 27... Hanging member 271…Suspension groove 272... Insertion protrusion 273... Blocking convex part 30...Tool unit 33 ... Suction pipe 333... Expanded diameter part 40... Position control mechanism 50 ... Control section N … Fasteners N1…Head N2… Legs N3… Seat part

Claims

1. a supply unit configured to make a fastening part having a head and a leg wait at a predetermined waiting position; a fastening machine including a tool unit having a suction pipe for sucking a fastening part waiting at the waiting position, the supply unit includes a hanging member having a hanging groove formed therein for hanging the fastening part, an insertion protrusion is formed on the hanging member so as to protrude upward from an opening of the hanging groove; The fastening machine is characterized in that the insertion protrusion is configured to have a size that allows it to enter the suction pipe.

2. 2. The fastening machine according to claim 1, wherein the insertion protrusion is shorter than the leg of the fastening component.

3. 3. The fastening machine according to claim 1, wherein the supply unit comprises a conveying means for conveying the fastening component to the hanging groove, and a reciprocating drive source for sliding the hanging member back and forth in a direction intersecting the conveying means.

4. The fastening machine according to claim 3, characterized in that the hanging member is provided with a blocking protrusion that blocks the tip of the conveying means when the hanging groove is moved to the standby position by the drive of the reciprocating drive source.

5. a frame that guides the reciprocating sliding of the suspension member driven by the reciprocating drive source, 5. The fastening machine according to claim 3, wherein the frame is provided with a matching protrusion that can be mated with an insertion protrusion and inserted into the suction pipe when the hanging groove moves to the standby position.

6. 6. The fastening machine according to claim 1, wherein the insertion projection has a diameter smaller than the outer diameter of the head of the fastening component.

7. A washer is attached to the leg of the fastening part, 6. The fastening machine according to claim 1, wherein the insertion projection has a diameter smaller than an outer diameter of the washer.

8. 8. The fastening machine according to claim 1, wherein the lower end opening of the suction pipe is formed with an expanded diameter portion whose diameter gradually expands downward.

9. a position control mechanism for driving the tool unit up and down; 9. The fastening machine according to claim 1, wherein the position control mechanism lowers the tool unit to a predetermined height that is set so that a lower end opening of the suction pipe is positioned below an upper surface of the insertion projection and the lower end opening does not come into contact with a periphery of the insertion projection.

10. the tool unit has a fastening tool configured to be movable up and down and rotatable within the suction pipe, and configured such that a lower end of the fastening tool can be fitted onto a head of the fastening part, The fastening machine according to claim 9, wherein the position control mechanism lowers the tool unit to a height where the fastening tool does not come into contact with a head of a fastening part.

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