driving-in machine

Abstract

The present application provides a driver in which an increase in load torque of a motor is suppressed when the motor's torque is used to move a striking mechanism against the force of a first moving mechanism. The driver has a striking mechanism (12) that is movable in a first direction (B1) and a second direction (B2) opposite the first direction (B1), and a first moving mechanism that moves the striking mechanism (12) in the first direction (B1) to strike a fastener. The driver has a motor, a second moving mechanism (45) that rotates due to the torque of the motor and moves the striking mechanism (12) in the second direction against the force of the first moving mechanism, and a torque suppression mechanism (45A-45H) that suppresses an increase in the torque of the motor when the striking mechanism (12) is moved in the second direction (B2).

Description

[0001] This application is a divisional application; its parent application number is "2018800281177", and the invention title is "Injection Machine, Strike Mechanism and Moving Mechanism". Technical Field

[0002] This invention relates to a driving machine, a striking mechanism, and a moving mechanism for moving a striking mechanism to strike fasteners. Background Technology

[0003] Currently, it is known that fasteners are driven into place by moving a striking mechanism, and such a fastener is described in Patent Document 1. The fastener described in Patent Document 1 includes a housing, a nose section, a motor housing, a accumulator chamber, a striking mechanism, an electric motor, a power conversion mechanism, a reducer, and a magazine. The nose section is fixed to the housing, the motor housing is connected to the housing, and the accumulator chamber is located inside the housing. The striking mechanism is located in the housing and includes a piston and a drill bit. A first bevel gear is provided on the output shaft of the reducer.

[0004] The power conversion mechanism is a cam plate housed within the casing, and a second bevel gear is mounted on the cam plate. The first bevel gear meshes with the second bevel gear. The cam plate converts the torque of the electric motor into the moving force of the drill bit. The cam plate has multiple protrusions. A rack is provided on the drill bit. The nail cartridge is mounted on the casing and houses the fasteners. The fasteners from the nail cartridge are supplied to the drill head.

[0005] If the electric motor stops, the piston stops at the bottom dead center due to the pressure in the accumulator chamber. If the electric motor rotates, its torque is transmitted to the cam plate via the reducer. If the protrusion on the cam plate engages with the rack, the striking mechanism moves towards the top dead center against the pressure in the accumulator chamber. If the striking mechanism reaches the top dead center, the protrusion on the cam plate disengages from the rack, and the striking mechanism moves towards the bottom dead center, thereby striking the fastener.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 2016-190277 Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] However, in the driving machine described in Patent Document 1, because the striking mechanism moves against the pressure of the accumulator chamber, the load torque of the motor increases when the striking mechanism moves from the lower dead center to the upper dead center. Therefore, in the design of the driving machine, the size of the motor, the reduction gear, and other drive components are selected in accordance with the load on the motor when the striking mechanism is near the upper dead center. The inventors of this application recognize that, in order to achieve a smaller and lighter motor, it is preferable to suppress the load on the motor when the striking mechanism is near the upper dead center, so as to uniformly distribute the load on the motor when the striking mechanism moves.

[0011] The purpose of this invention is to provide a driving machine, a striking mechanism, and a moving mechanism that can suppress the increase of the load torque of the motor when the striking mechanism moves against the force of the first moving mechanism using the torque of the motor.

[0012] Solution for solving the problem

[0013] One embodiment of the driving machine includes a striking mechanism and a first moving mechanism. The striking mechanism is movable in a first direction and a second direction opposite to the first direction. The first moving mechanism causes the striking mechanism to move in the first direction to strike a fastener. The driving machine is characterized by having: a motor; a second moving mechanism that rotates due to the torque of the motor and causes the striking mechanism to move in the second direction against the force of the first moving mechanism; and a torque suppression mechanism that suppresses an increase in the torque of the motor when the striking mechanism moves in the second direction.

[0014] Furthermore, another embodiment of the present invention provides a driving machine characterized by comprising: a striking mechanism capable of moving in a first direction and a second direction opposite to the first direction; a first moving mechanism that moves the striking mechanism in the first direction to strike a fastener; a motor; a second moving mechanism that rotates due to the torque of the motor and moves the striking mechanism in the second direction against the force of the first moving mechanism; the striking mechanism having a main body and a plurality of first engaging portions, the plurality of first engaging portions protruding from the main body in a direction intersecting the moving direction of the main body and being arranged at intervals in the moving direction; the second moving mechanism having a rotating member and a plurality of second engaging portions, the plurality of second engaging portions being disposed on the rotating member and engaging with the plurality of first engaging portions; the plurality of first engaging portions of the striking mechanism including at least two first engaging portions whose protrusion from the main body increases in the first direction.

[0015] The effects of the invention

[0016] In one embodiment, the driving machine can suppress the increase in motor torque when the striking mechanism moves in a second direction against the force of the first moving mechanism. Attached Figure Description

[0017] Figure 1 This is a side view of the overall cross-sectional view of Embodiment 1 of the injection machine of the present invention.

[0018] Figure 2 This is a partial sectional view of the side-view injection machine.

[0019] Figure 3 This is a cross-sectional view showing a specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0020] Figure 4 This is a cross-sectional view showing a specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0021] Figure 5 This is a cross-sectional view showing a specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0022] Figure 6 This is a block diagram showing the control system of the injection machine.

[0023] Figure 7 It is a line graph showing the relationship between the load torque of the electric motor and the amount of movement of the striking mechanism.

[0024] Figure 8 This is a cross-sectional view showing another specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0025] Figure 9 This is a cross-sectional view showing another specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0026] Figure 10 This is a cross-sectional view showing another specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0027] Figure 11 This is a diagram showing another specific example of a pin wheel and a drive impact needle rod provided in an injection machine.

[0028] Figure 12 It is shown Figure 11 The diagram shows the driving impact needle bar.

[0029] Figure 13 This is a side view of the overall cross-sectional view of Embodiment 2 of the injection machine.

[0030] Figure 14 yes Figure 13 A partial sectional view of the injection machine.

[0031] Figure 15 It is shown Figure 13 A schematic diagram of the movement of the plunger and counterweight of the injection machine.

[0032] Figure 16 It is shown Figure 13 The plunger and counterweight of the injection machine from Figure 15 A diagram illustrating the state after further actions are taken at the current position.

[0033] Figure 17 It is shown Figure 13 The plunger and counterweight of the injection machine from Figure 16 A diagram illustrating the state after further actions are taken at the current position.

[0034] Figure 18 This is a cross-sectional view showing another example of embodiment 2 of the punching machine.

[0035] Figure 19 This is a schematic diagram illustrating embodiment 3 of the punching machine. Detailed Implementation

[0036] Referring to the accompanying drawings, representative embodiments of several implementations of the punching machine are described. In each drawing, the same symbol is used to label the same structure, and its description is omitted.

[0037] (Implementation Method 1)

[0038] Figure 1 The shown driver 10 includes a housing 11, a striking mechanism 12, a pressure chamber 13, a power conversion mechanism 14, and an electric motor 15. The striking mechanism 12 is configured to extend from the inside to the outside of the housing 11. The pressure chamber 13 causes the striking mechanism 12 to move from the top dead center to the bottom dead center in a first direction B1. The power conversion mechanism 14 causes the striking mechanism 12 to move in a second direction B2, opposite to the first direction. The torque of the electric motor 15 is transmitted to the power conversion mechanism 14.

[0039] The outer casing 11 has a main body 16, a cover 17, a handle 18, a motor housing 19, and a connecting portion 20. The cover 17 closes the opening of the main body 16. The handle 18 and the motor housing 19 are connected to the main body 16. The handle 18 and the motor housing 19 are connected to the connecting portion 20. A pressure accumulator 21 and a cylinder 22 are disposed inside the outer casing 11, and an annular connector 23 connects the pressure accumulator 21 and the cylinder 22. A pressure chamber 13 is formed inside the pressure accumulator 21.

[0040] The striking mechanism 12 includes a piston 24 and a driver blade 25. The piston 24 is movable within a cylinder 22 in the direction of the cylinder's centerline A1. The driver blade 25 is fixed to the piston 24. The centerline A1 is parallel to both the first direction B1 and the second direction B2. Figure 2 As shown, a sealing member 83 is installed on the outer periphery of the piston 24, and the sealing member 83 contacts the inner surface of the cylinder 22 to form a sealing surface. The sealing member 83 provides an airtight seal. Figure 1 Pressure chamber 13 is shown.

[0041] Compressed gas is sealed inside the pressure chamber 13. Besides air, the gas sealed inside the pressure chamber 13 can also be an inert gas, such as nitrogen, rare gases, etc. In this embodiment, an example of sealing air inside the pressure chamber 13 will be described.

[0042] The drive impact pin rod 25 is made of metal. For example... Figure 3 , Figure 4 and Figure 5 As shown, the drive impact needle rod 25 has a plate-shaped main body 25K and a plurality of protrusions 25A to 25H provided on the main body 25K. The drive impact needle rod 25 is movable along the center line A1. The plurality of protrusions 25A to 25H are provided in the direction of movement of the drive impact needle rod 25. The plurality of protrusions 25A to 25H are arranged at constant intervals along the center line A1. In this embodiment, eight protrusions 25A to 25H are provided on the drive impact needle rod 25. The protrusions 25A to 25H protrude from the edge 26 of the drive impact needle rod 25. The direction in which the protrusions 25A to 25H protrude from the edge 26 is the direction intersecting the center line A1.

[0043] The protrusions 25A to 25H are arranged sequentially along the centerline A1. Along the centerline A1, protrusion 25A is located at the position closest to the piston 24, and protrusion 25H is located at the position furthest from the piston 24. The protrusion amount H1 from the edge 26 to the front end of each of the protrusions 25A to 25H is different for each of them. Along the centerline A1, the protrusion amount H1 of protrusion 25A, which is closest to the piston 24, is the smallest, and the protrusion amount H1 of protrusions 25A to 25H increases sequentially as the distance from the piston 24 increases.

[0044] The support 27 extends from the interior to the exterior of the main body 16. The support 27 is made of aluminum alloy or synthetic resin. The support 27 has a cylindrical load-bearing portion 28, an arc-shaped cover 29 continuous with the load-bearing portion 28, and a head 30 continuous with the load-bearing portion 28. The head 30 has an injection path 34. A portion of the head 30 is disposed outside the outer casing 11.

[0045] The load-bearing part 28 is disposed within the main body 16, and the load-bearing part 28 has a shaft hole 31. A buffer 32 is provided within the load-bearing part 28. The buffer 32 is integrally formed from a rubber-like elastic material. The buffer 32 has a shaft hole 33. The shaft holes 31 and 33 are connected, allowing the drive impact needle rod 25 to move along the centerline A1 within the shaft holes 31 and 33 and the injection path 34.

[0046] like Figure 1As shown, the electric motor 15 is housed within the motor housing 19. The electric motor 15 has a rotor 15A and a stator 15B, with the rotor 15A fixed to the motor shaft 35. The motor shaft 35 is rotatably supported by bearings 36. The motor shaft 35 is rotatable about axis A2. A battery 37, detachable from the connecting part 20, supplies power to the electric motor 15.

[0047] The storage battery 37 has a housing 38 and battery cells housed within the housing 38. Each battery cell is a rechargeable and dischargeable secondary battery, and can be any of the following: lithium-ion battery, nickel-metal hydride battery, lithium-ion polymer battery, or nickel-cadmium battery. The storage battery 37 is a DC power source. A first terminal is provided within the housing 38 and is connected to the battery cell. A second terminal is fixed to the connecting portion 20; when the storage battery 37 is installed in the connecting portion 20, the first terminal and the second terminal can be electrically connected.

[0048] like Figure 2 As shown, the gearbox 39 is non-rotatably mounted within the housing 11. The reducer 40 is mounted within the gearbox 39. The reducer 40 has an input component 41, an output component 42, and three sets of planetary gears. The input component 41 is fixed to the motor shaft 35. The input component 41 is rotatably supported by bearings 43. The input component 41 and the output component 42 are rotatable about axis A2. The rotational force of the motor shaft 35 is transmitted to the output component 42 via the input component 41. The reducer 40 reduces the rotational speed of the output component 42 relative to the input component 41 to a low speed.

[0049] like Figure 2 As shown, the power conversion mechanism 14 is disposed within the cover 29. The power conversion mechanism 14 converts the rotational force of the output component 42 into the moving force of the striking mechanism 12. The power conversion mechanism 14 has a pin shaft 44 that rotates integrally with the output component 42, a pin wheel 45 fixed to the pin shaft 44, and a plurality of pins 45A to 45H disposed on the pin wheel 45. The pin wheel 45 has plate portions 45J and 45K. The plate portions 45J and 45K are arranged parallel to each other with a gap in the direction of axis A2. The plurality of pins 45A to 45H are disposed between the plate portions 45J and 45K.

[0050] Pin 45A can engage and disengage from protrusion 25A; pin 45B can engage and disengage from protrusion 25B; pin 45C can engage and disengage from protrusion 25C; pin 45D can engage and disengage from protrusion 25D; pin 45E can engage and disengage from protrusion 25E; pin 45F can engage and disengage from protrusion 25F; pin 45G can engage and disengage from protrusion 25G; pin 45H can engage and disengage from protrusion 25H.

[0051] The pin shaft 44 is rotatably supported by bearings 46 and 47. The pin shaft 44 can rotate about axis A2. Figures 3 to 5 As shown, in a top view perpendicular to axis A2, axis A2 does not intersect with center line A1.

[0052] like Figure 3 As shown, eight pins 45A to 45H are arranged at intervals along the rotational direction of the pin wheel 45. The radius R1 from the center of each of the eight pins 45A to 45H to the axis A2 is different along the radial direction of the pin wheel 45. On the outer periphery of the pin wheel 45, there are a first region 85 and a second region 86 arranged in different areas along the rotational direction. The first region 85 is located within approximately 270 degrees along the rotational direction of the pin wheel 45, and the second region 86 is located within approximately 90 degrees along the rotational direction of the pin wheel 45. The first region 85 has a constant radius R5. The radius R6 of the second region 86 is non-uniform; radius R5 is larger than radius R6. That is, the second region 86 is formed by cutting a portion along the rotational direction of the pin wheel 45. The eight pins 45A to 45H are located in positions corresponding to the first region 85 along the rotational direction of the pin wheel 45.

[0053] The radius R1 from the center of pin 45A (located at the front end in the rotational direction of pin wheel 45) to axis A2 is the largest among the eight pins 45A to 45H. As the pin 45H (located at the rear end in the rotational direction of pin wheel 45) approaches, the radius R1 decreases. Figures 3 to 5 In the embodiment shown, the radii R1 from the centers of each of the pins 45A to 45H to the axis A2 are all different. When the pin wheel 45 rotates, the range of movement of the eight pins 45A to 45H centered on the axis A2 is outside the range of movement of the edge 26 of the drive impact needle bar 25.

[0054] A rotation limiting mechanism 48 is disposed within the gearbox 39. The rotation limiting mechanism 48 is positioned in the power transmission path between the input component 41 and the output component 42. The rotation limiting mechanism 48 is a rolling element, such as a roller or ball. The rotation limiting mechanism 48 is positioned between the rotating component of the planetary gear mechanism, such as the planet carrier 49, and the gearbox 39.

[0055] If a torque in the first direction is transmitted from the electric motor 15 to the planetary carrier 49, the rotation limiting mechanism 48 allows the pin wheel 45 to rotate due to that torque. Figure 3 It rotates counterclockwise around the center. If an impulse is applied from the drive impact pin 25 to the pin wheel 45... Figure 3 If a clockwise torque is applied, and this torque is transmitted to the planet carrier 49 to apply a torque in the second direction, then the rotation limiting mechanism 48 is engaged between the planet carrier 49 and the gearbox 39, preventing the pin wheel 45 from rotating. Figure 3 It rotates clockwise around the center.

[0056] And, as Figure 1 As shown, the nail cartridge 50 is supported by the head 30 and the housing 11. Nails 51 are housed within the nail cartridge 50. Multiple nails 51 are connected using connecting components such as wires or adhesives. The nail cartridge 50 has a feeding mechanism that supplies the nails 51 within the cartridge 50 to the ejection path 34.

[0057] The motor base plate 52 is disposed inside the motor housing 19. Figure 6 The inverter circuit 53 shown is mounted on the motor substrate 52. The inverter circuit 53 has multiple switching elements, which can be individually turned on and off.

[0058] like Figure 1 As shown, the control board 54 is disposed inside the housing 11. Figure 6 The controller 84 shown is located on the control board 54. The controller 84 is a microcomputer with input ports, output ports, a central processing unit, and a storage device.

[0059] like Figure 1 As shown, a trigger 55 is provided in the handle 18. The trigger 55 is movable relative to the handle 18. A trigger switch 56 is provided inside the handle 18. If an operating force is applied to the trigger 55, the trigger switch 56 is turned on; if the operating force is released, the trigger switch 56 is turned off.

[0060] like Figure 2 As shown, push rod 57 is mounted on the machine head 30. Push rod 57 is movable relative to machine head 30 in the direction of centerline A1. An elastic member 58 is provided that applies force to push rod 57 in the direction of centerline A1. The elastic member 58 is a metal compression coil spring, and the elastic member 58 applies force to push rod 57 in the direction away from buffer 32. A push rod limiting member 59 is provided on machine head 30, and push rod 57, which is subjected to force by elastic member 58, comes into contact with push rod limiting member 59 and stops.

[0061] It has Figure 6 The push button switch 60 is shown. If the push rod 57 is pressed against the material W1 being driven in, and the push rod 57 moves a predetermined amount in the direction approaching the buffer 32, the push button switch 60 is turned on. If the force pressing the push rod 57 against the material W1 is released, the push button switch 60 is turned off. A phase detection sensor 61 is provided to detect the rotation angle, i.e., the phase, of the pin wheel 45. Signals from the trigger switch 56, the push button switch 60, and the phase detection sensor 61 are input to the controller 84.

[0062] The operator uses the driver 10, and the controller 84 performs the following control example. The controller 84 determines whether the condition for striking the nail 51 is met. If the controller 84 detects at least one of the following: the trigger switch 56 is open, or the push-button switch 60 is open, it determines that the condition for striking the nail 51 is not met, and disconnects all the switching elements of the inverter circuit 53. Therefore, no power is supplied to the electric motor 15 from the battery 37, and the electric motor 15 stops.

[0063] And, as Figure 3 As shown, pin 45G engages with protrusion 25G, and striking mechanism 12 stops in the standby position. If striking mechanism 12 is in the standby position, piston 24 disengages from buffer 32. If striking mechanism 12 stops in the standby position, the front end of drive impact pin bar 25 is positioned between the head of pin 51 and the front end of machine head 30 in the direction of centerline A1. If striking mechanism 12 stops in the standby position, and as... Figure 1 When the push rod 57 leaves the material W1 being driven in, it comes into contact with the push rod limiter 59 and stops.

[0064] Additionally, based on the signal output from the phase detection sensor 61, the controller 84 detects that the striking mechanism 12 is in the standby position, and thus the controller 84 stops the electric motor 15. The rotation limiting mechanism 48 stops the striking mechanism 12 in the standby position when the electric motor 15 stops. The striking mechanism 12 bears the force of the pressure chamber 13, and the force borne by the striking mechanism 12 is transmitted to the pin shaft 44 via the pin wheel 45. Therefore, the pin shaft 44 bears... Figure 3 The torque is transmitted clockwise. The torque borne by the pin shaft 44 is transmitted to the planet carrier 49, and the rotation limiting mechanism 48 is embedded between the planet carrier 49 and the gearbox 39. Therefore, it prevents the pin shaft 44 from rotating clockwise. Figure 3 The striking mechanism 12 rotates clockwise and stops at the center. Figure 3 The standby position.

[0065] If the controller 84 detects that the trigger switch 56 is turned on and the push-button switch 60 is turned on, it determines that the condition for striking the nail 51 is met, and repeatedly controls the switching elements of the inverter circuit 53 to turn on and off, supplying power from the battery 37 to the electric motor 15. This causes the motor shaft 35 of the electric motor 15 to rotate. The torque of the motor shaft 35 is transmitted to the pin shaft 44 via the reducer 40.

[0066] Pinwheel 45 Figure 3 The striking mechanism 12 rotates counterclockwise, moving from its standby position against the force of the pressure chamber 13 in the second direction B2, causing the air pressure in the pressure chamber 13 to rise. The movement of the striking mechanism 12 in the second direction B2 refers to the striking mechanism 12... Figure 1The middle rises. Additionally, after pin 45H engages with protrusion 25H, pin 45G disengages from protrusion 25G. If the striking mechanism 12... Figure 4 When the upper dead center is reached, the front end of the drive impact pin 25 is positioned above the head of the pin 51. Furthermore, after the impact mechanism 12 reaches the upper dead center, the pin 45H disengages from the protrusion 25H. Thus, the impact mechanism 12 moves in the first direction B1 due to the air pressure in the pressure chamber 13. The movement of the impact mechanism 12 in the first direction B1 refers to the impact mechanism 12... Figure 1 The needle descends. The driving impact needle rod 25 strikes the nail 51 located in the injection path 34, thereby driving the nail 51 into the material W1 to be driven in.

[0067] Furthermore, if the nail 51 is fully embedded in the driven material W1 and stops, the front end of the driving impact rod 25 will disengage from the nail 51 due to its reaction force. And, the piston 24... Figure 5 The piston 24 collides with the buffer 32, causing the buffer 32 to deform elastically and absorb the kinetic energy of the impact mechanism 12. The position of the impact mechanism 12 at the moment the piston 24 collides with the buffer 32 is the bottom dead center.

[0068] Furthermore, the motor shaft 35 of the electric motor 15 also rotates after driving the impact pin 25 to strike the nail 51. Moreover, if the pin 45A engages with the protrusion 25A, the striking mechanism 12... Figure 1 The temperature rises again. If controller 84 detects that the striking mechanism 12 has arrived... Figure 3 If the electric motor 15 is in the standby position, the electric motor 15 will stop. If the electric motor 15 stops, the rotation limiting mechanism 48 will keep the striking mechanism 12 in the standby position.

[0069] In this embodiment, starting from the lower dead center position, the striking mechanism 12 reaches the upper dead center position by engaging pin 45A with protrusion 25A, pin 45B with protrusion 25B, pin 45C with protrusion 25C, pin 45D with protrusion 25D, pin 45E with protrusion 25E, pin 45F with protrusion 25F, pin 45G with protrusion 25G, and pin 45H with protrusion 25H. Furthermore, since two sets of pins engage with the protrusions, if the next pin engages with a protrusion, the previously engaged pin disengages from the protrusion.

[0070] In this embodiment, as the rotation of the pin 45 switches the transmission of torque from the pin 45 to the striking mechanism 12, the radius R1 successively shortens. Therefore, as the striking mechanism 12 rises due to the torque of the pin 45, the radius R1, corresponding to the torque arm, shortens as the striking mechanism 12 approaches its top dead center. Thus, the load torque of the pin 45, i.e., the load torque of the electric motor 15, can be suppressed as the striking mechanism 12 approaches its top dead center. The load torque is the torque required to make the striking mechanism 12 rise.

[0071] In this embodiment, the radius R1 from the center of each of the pins 45A to 45H to the axis A2 can be set according to the increase in load torque when the striking mechanism 12 moves toward the direction close to the top dead center, so as to suppress the increase in load torque of the electric motor 15.

[0072] In this embodiment, the radii R1 of the centers of each pin from axis A2 to pins 45A to 45H are different. The radius R5 of the first region 85 of pin 45 is larger than the radius R6 of the second region 86. Furthermore, pin 45 is preferably formed of a metal material with a higher mass or specific gravity than resin or carbon-based materials. In particular, the material of the first region 85 of pin 45 is preferably a material with a higher mass than the material of the second region 86, or the material of the first region 85 of pin 45 is preferably a high-quality and high-specific-gravity material.

[0073] This is based on the following reasoning. When the pin wheel 45 is rotated to raise the striking mechanism 12, an inertial torque in the direction of rotation acts on the pin wheel 45. Therefore, when the striking mechanism 12 is near the bottom dead center and the electric motor 15 is under light load, the pin wheel 45 rotates at high speed, and the high-quality material of the first region 85 of the pin wheel 45 allows the pin wheel 45 to accumulate an inertial torque.

[0074] Moreover, this is because: since the striking mechanism 12 is located near the top dead center, the electric motor 15 is under high load, and in the region where it rotates at low speed or where the electric motor 15 stops, the load torque of the electric motor 15 is further reduced by the inertial torque accumulated by the pin wheel 45.

[0075] That is, pins 45A to 45H are arranged radially inward in sequence in the rotational direction of the first region 85 of the pin wheel 45, thus allowing the first region 85 of the pin wheel 45 to be formed from high-quality material. Therefore, the flywheel effect can be utilized to further reduce the load torque of the electric motor 15.

[0076] Furthermore, as it approaches the piston 24, the protrusion H1 of the eight protrusions 25A to 25H on the drive impact pin rod 25 gradually shortens. Therefore, the engagement and disengagement of the pin and the protrusions can be performed smoothly.

[0077] Figure 7 This is an example illustrating the relationship between the load torque of the electric motor and the movement of the striking mechanism. The movement of the striking mechanism is the distance it travels from the standby position to the top dead center. The solid line represents the embodiment, and the dashed line represents the comparative example. In the comparative example, the distance from the axis to the center of the pin is constant. The increase in load torque in the embodiment is smaller than the increase in load torque in the comparative example. The increase in load torque refers to the percentage increase or rate of increase of the load torque.

[0078] Reference Figures 8 to 10 Other examples of pin 45 and drive impact pin 25 will be described. The radius R2 from the center of each of pins 45A to 45E to axis A2 is the same. The radius R3 from the center of each of pins 45F to 45H to axis A2 is the same. Radius R3 is smaller than radius R2.

[0079] The protrusion H2 of the protrusions 25A to 25E on the driving impact needle rod 25 is all the same. The protrusion H3 of the protrusions 25F to 25H is all the same. The protrusion H2 is smaller than the protrusion H3. Figure 8 , Figure 9 and Figure 10 In the example shown, during the period when the striking mechanism 12 moves from the standby position to the top dead center, pin 45F engages and disengages relative to protrusion 25F, pin 45G engages and disengages relative to protrusion 25G, and pin 45H engages with protrusion 25H. Figure 8 , Figure 9 and Figure 10 In the example shown, during the period before the striking mechanism 12 moves from the lower dead center to the standby position, pins 45A to 45E engage and disengage relative to protrusions 25A to 25E.

[0080] Therefore, the radius R3 corresponding to the pins 45F to 45H that transmit torque during the period when the striking mechanism 12 moves from the standby position to the top dead center is shorter than the radius R2 corresponding to the pins 45A to 45E that transmit torque during the period before the striking mechanism 12 moves from the bottom dead center to the standby position. Therefore, it is possible to suppress the increase in load torque during the period when the striking mechanism 12 moves from the standby position to the top dead center relative to the load torque during the period before the striking mechanism 12 moves from the bottom dead center to the standby position.

[0081] Reference Figure 11 Other examples of pin wheel 45 and drive impact pin rod 25 will be described. Figure 11 The pin wheel 45 shown has a plate portion 45J and pins 45A to 45H disposed along the rotation direction of the plate portion 45J. Pins 45A to 45H are... Figure 3 The pins 45A to 45H shown have the same structure. Figure 11 The pinwheel 45 does not have Figure 2 The plate portion 45K. The drive impact pin bar 25 and the plate portion 45J are provided at a distance from each other along the axis A2. Protrusions 62A to 62H are provided on the surface 62 of the drive impact pin bar 25 near the pin wheel 45. Protrusions 62A to 62H are provided at constant intervals along the center line A1. For example... Figure 12 As shown, the protrusions H4 of the protrusions 62A to 62H from the surface 62 are all the same.

[0082] If using Figure 11The drive impact needle rod 25 shown is as Figure 2 When the striking mechanism 12 is engaged with the protrusion 62G, the striking mechanism 12 stops in the standby position. Furthermore, if the pin 45 is in... Figure 11 When the pin 45H rotates counterclockwise, after the pin 45H engages with the protrusion 62H, the pin 45G disengages from the protrusion 62G, and the striking mechanism 12 reaches its upper dead point. Alternatively, if the pin 45H disengages from the protrusion 62H, the striking mechanism 12 descends to strike the fastener, and the striking mechanism 12 reaches its lower dead point.

[0083] After the striking mechanism 12 reaches the lower dead center, if the pin wheel 45 is in Figure 11 When the mechanism rotates counterclockwise, pin 45A engages with protrusion 62A, and the striking mechanism 12 rises from the bottom dead center. Pin 45B engages and disengages with protrusion 62B, pin 45C engages and disengages with protrusion 62C, pin 45D engages and disengages with protrusion 62D, pin 45E engages and disengages with protrusion 62E, pin 45F engages and disengages with protrusion 62F, and pin 45G engages with protrusion 62G. If the striking mechanism 12 reaches the standby position, pin wheel 45 stops. Figure 11 The pin wheel 45 and the drive impact pin rod 25 shown can obtain the same as those shown. Figures 3 to 8 The same effect is achieved through the implementation method.

[0084] (Implementation Method 2)

[0085] Figure 13 The shown punching machine 110 includes a housing 111, a striking mechanism 112, a nail cartridge 113, an electric motor 114, a conversion mechanism 115, a control board 116, a battery assembly 117, and a reaction absorption mechanism 208. The housing 111 has a cylindrical housing portion 119, a handle 120 connected to the housing portion 119, and a motor housing 121 connected to the housing portion 119. A mounting portion 122 is connected to the handle 120 and the motor housing 121. An injection portion 123 is located outside the housing portion 119 and is fixed to the housing portion 119. The injection portion 123 has an injection path 124. By holding the handle 120, the user can push the front end of the injection portion 123 onto the material W1 being punched.

[0086] The nail cartridge 113 is supported by a motor housing 121 and an injection section 123. The motor housing 121 is positioned between the handle 120 and the nail cartridge 113 along the centerline E1. The nail cartridge 113 houses a plurality of fasteners 125. The fasteners 125 include nails, and the materials of the fasteners 125 include metal, non-ferrous metal, and steel. The fasteners 125 are interconnected by connecting members. The connecting members can be any of wire, adhesive, or resin. The fasteners 125 are rod-shaped. The nail cartridge 113 has a feeder. The feeder delivers the fasteners 125 housed in the nail cartridge 113 to the injection path 124.

[0087] The striking mechanism 112 is disposed inside and outside the housing portion 119. The striking mechanism 112 has a plunger 126 disposed inside the housing portion 119 and a drive impact pin rod 127 fixed to the plunger 126. The plunger 126 is made of metal or synthetic resin.

[0088] The drive impact pin rod 127 is made of metal. A guide shaft 128 is disposed within the housing portion 119. The centerline E1 passes through the center of the guide shaft 128. The guide shaft 128 can be made of any material, including metal, non-ferrous metal, or steel. Figure 13 and Figure 14 As shown, the upper bracket 129 and the lower bracket 130 are fixedly mounted inside the housing 111. The upper bracket 129 and the lower bracket 130 can be made of any material, including metal, non-ferrous metal, and steel. The guide shaft 128 is fixed to the upper bracket 129 and the lower bracket 130. Guide rods are disposed inside the housing portion 119. There are two guide rods, and both guide rods are fixed to the upper bracket 129 and the lower bracket 130. Both guide rods are plate-shaped and are arranged parallel to the centerline E1.

[0089] A plunger 126 is mounted on the outer circumferential surface of a guide shaft 128 and is movable along the guide shaft 128 in the direction of the centerline E1. The guide shaft 128 positions the plunger 126 radially with the centerline E1 as its center. A guide rod positions the plunger 126 circumferentially with the centerline E1 as its center. A drive impact rod 127 is movable parallel to the centerline E1 together with the plunger 126. The drive impact rod 127 is movable within the injection path 124.

[0090] The reaction absorption mechanism 208 absorbs the reaction force borne by the outer casing 111. For example... Figure 14 and Figure 15 As shown, the reaction absorption mechanism 208 has a cylindrical balance block 118 and engaging portions 200 and 201 provided on the balance block 118. The balance block 118 can be made of any material, such as metal, non-ferrous metal, steel, or ceramic. The balance block 118 is mounted on a guide shaft 128. The balance block 118 is movable along the guide shaft 128 in the direction of the centerline E1. The guide shaft 128 positions the balance block 118 radially relative to the centerline E1. The guide rod positions the balance block 118 circumferentially with the centerline E1 as the center.

[0091] Spring 136 is disposed within housing portion 119, positioned between plunger 126 and counterweight 118 along centerline E1. As an example, spring 136 can be a metal compression coil spring. Spring 136 is capable of extension and retraction along centerline E1. The first end of spring 136 along centerline E1 is in direct or indirect contact with plunger 126. The second end of spring 136 along centerline E1 is in direct or indirect contact with counterweight 118. Spring 136 stores elastic energy by bearing compressive force along centerline E1. Spring 136 is an example of a force-applying mechanism that applies force to striking mechanism 112 and counterweight 118.

[0092] The plunger 126 receives a force from the spring 136 in a first direction D1, approaching the lower support 130 along the centerline E1. The counterweight 118 receives a force from the spring 136 in a second direction D2, approaching the upper support 129 along the centerline E1. The first direction D1 and the second direction D2 are opposite to each other and are parallel to the centerline E1. The plunger 126 and the counterweight 118 receive forces from the spring 136, which is a physically identical component.

[0093] The counterweight buffer 137 and the plunger buffer 138 are disposed within the housing portion 119. The counterweight buffer 137 is positioned between the upper support 129 and the counterweight 118. The plunger buffer 138 is positioned between the lower support 130 and the plunger 126. Both the counterweight buffer 137 and the plunger buffer 138 are made of synthetic rubber.

[0094] Figure 13 and Figure 14 The shown inserter 110 is an example where the centerline E1 is parallel to the vertical. The movement of the striking mechanism 112, the plunger 126, or the counterweight 118 in the first direction D1 is called descent. The movement of the striking mechanism 112 or the counterweight 118 in the second direction D2 is called ascent. The striking mechanism 112 and the counterweight 118 can reciprocate in the direction of the centerline E1.

[0095] Figure 13 The battery assembly 117 shown can be installed and removed relative to the mounting part 122. The battery assembly 117 has a housing 139 and multiple battery cells housed within the housing 139. Each battery cell is a rechargeable and dischargeable secondary battery, and can be any of the following: lithium-ion battery, nickel-metal hydride battery, lithium-ion polymer battery, or nickel-cadmium battery. The battery assembly 117 is a DC power source, and its power can supply the electric motor 114.

[0096] Figure 13 The control board 116 shown is disposed within the mounting portion 122. Figure 6The controller 140 and inverter circuit 141 shown are mounted on the control board 116. The controller 140 is a microcomputer having an input port, an output port, an arithmetic processing unit, and a storage unit. The inverter circuit 141 has multiple switching elements, which can be turned on and off individually. The controller 140 outputs signals to control the inverter circuit 141. A circuit is formed between the battery assembly 117 and the electric motor 114. The inverter circuit 141 is part of the circuit and connects and disconnects the circuit.

[0097] like Figure 13 As shown, trigger 142 and trigger switch 143 are located on handle 120. If the user applies operating force to trigger 142, trigger switch 143 is activated. If the user releases the operating force applied to trigger 142, trigger switch 143 is deactivated. Position detection sensor 144 is located inside housing 111. Position detection sensor 144, for example, infers the position of plunger 126 and counterweight 118 in the direction of centerline E1 based on the rotation angle of electric motor 114 and outputs a signal. Figure 13 The injection machine 110 shown does not have Figure 6 The push-button switch 60 is shown. The controller 140 receives the signal from the trigger switch 143 and the signal from the position detection sensor 144, and outputs a signal to control the inverter circuit 141.

[0098] Figure 13 The electric motor 114 shown has a rotor 184 and a stator 145, with a motor shaft 146 mounted on the rotor 184. When power is supplied to the electric motor 114 from the battery assembly 117, the motor shaft 146 rotates. A speed reducer 147 is disposed within the motor housing 121. The speed reducer 147 has multiple planetary gear mechanisms, an input member 148, and an output member 149. The input member 148 is connected to the motor shaft 146. The electric motor 114 and the speed reducer 147 are arranged concentrically around a centerline E1. Figure 13 The shown inserter 110 is an example in which the angle between the centerline E1 and the axis E2 is 90 degrees.

[0099] The conversion mechanism 115 converts the rotational force of the output component 149 into the action force of the striking mechanism 112 and the action force of the balance block 118. The conversion mechanism 115 has a first gear 150, a second gear 151, and a third gear 152. The first gear 150, the second gear 151, and the third gear 152 can be made of any material, including metal, non-ferrous metal, and steel. The bracket 153 is disposed inside the housing 111, and the output component 149 is rotatably supported by the bracket 153. The first gear 150 is fixed to the output component 149. The second gear 151 is rotatably supported by the support shaft 154. The third gear 152 is rotatably supported by the support shaft 155. The support shafts 154 and 155 are mounted on the bracket 153. The first gear 150 can rotate around axis E2, the second gear 151 can rotate around axis E3, and the third gear 152 can rotate around axis E4.

[0100] like Figure 14 As shown, axes E2, E3, and E4 are spaced apart along the centerline E1. Axis E3 is positioned between axes E2 and E4. Axis axes E2, E3, and E4 are parallel to each other. The third gear 152 is positioned along the centerline E1 between the second gear 151 and the upper support 129. The first gear 150 is positioned along the centerline E1 between the second gear 151 and the nail box 113.

[0101] like Figure 15 As shown, the outer diameters of the first gear 150, the second gear 151, and the third gear 152 are the same. The second gear 151 meshes with both the first gear 150 and the third gear 152. A cam roller 157 is located on the first gear 150, two cam rollers 158 and 202 are located on the second gear 151, and two cam rollers 159 and 203 are located on the third gear 152. The cam roller 157 is capable of rotating relative to the first gear 150. The two cam rollers 158 and 202 are arranged on the same circumference centered on axis E3. The two cam rollers 158 and 202 are each capable of rotating relative to the second gear 151. An imaginary circle G1 passing through the center of rotation of the cam roller 157 has a radius R11. An imaginary circle G2 passing through the center of rotation of the cam rollers 158 and 202 has a radius R12. Imaginary circle G1 is centered on axis E2, and imaginary circle G2 is centered on axis E3. The radius R12 is smaller than the radius R11.

[0102] Two cam rollers 159 and 203 are each capable of rotating relative to the third gear 152. An imaginary circle G3 passing through cam roller 159 has a radius R13. An imaginary circle G4 passing through cam roller 203 has a radius R14. Both imaginary circles G3 and G4 are centered on axis E4. Radius R14 is smaller than radius R13. Radius R13 and R14 are smaller than radius R12. Thus, radius R11 and radius R12 are different from each other, and radius R13 and radius R14 are different from each other.

[0103] As an example, the materials of cam rollers 157, 158, 159, 202, and 203 include metals, non-ferrous metals, and steel. Cam rollers 157, 158, 159, 202, and 203 are cylindrical in shape, and all of them have the same outer diameter.

[0104] If power is supplied to the electric motor 114 from the battery assembly 117 and the motor shaft 146 rotates forward, the rotational force of the motor shaft 146 is transmitted to the first gear 150 via the reducer 147. If the first gear 150 is in... Figure 15 If the gear rotates clockwise, the second gear 151 will rotate counterclockwise, and the third gear 152 will rotate clockwise.

[0105] like Figure 15 As shown, engaging parts 204, 205, and 206 are provided on the plunger 126. If the first gear 150 is in... Figure 15 When the third gear 152 rotates clockwise, the cam roller 157 can engage and disengage from the engaging part 204. When the second gear 151 rotates counterclockwise, the cam roller 158 can engage and disengage from the engaging part 205, and the cam roller 202 can engage and disengage from the engaging part 206. When the third gear 152 rotates clockwise, the cam roller 159 can engage and disengage from the engaging part 200, and the cam roller 203 can engage and disengage from the engaging part 201.

[0106] Next, an example of using the punching machine 110 will be described. If the controller 140 detects that the trigger switch 143 is open, it will not supply power to the electric motor 114, causing the motor shaft 146 to stop. If the electric motor 114 stops, then... Figure 14 As shown, the plunger 126 stops at the bottom dead center, where it contacts the plunger buffer 138. Furthermore, the spring force of the spring 136 applies force to the balance block 118, causing it to stop at the top dead center, where it contacts the balance block buffer 137. The controller 140 infers the positions of the plunger 126 and the balance block 118 along the centerline E1 by processing the signal from the position detection sensor 144.

[0107] If the user pushes the front end of the injection section 123 against the material W1 being injected, and the controller 140 detects the activation of the trigger switch 143, the controller 140 supplies power to the electric motor 114, causing the motor shaft 146 to rotate forward. The rotational force of the motor shaft 146 is amplified by the reducer 147 and transmitted to the first gear 150. The first gear 150 then... Figure 15 Rotate clockwise as shown on the left side.

[0108] If the first gear 150 rotates clockwise, then the second gear 151 rotates counterclockwise, and the third gear 152 rotates clockwise. If the first gear 150 rotates clockwise, and the cam roller 157 engages with the engaging part 204, then as... Figure 15 As shown on the right, the plunger 126 resists the force of the spring 136 and operates in the second direction D2. That is, the striking mechanism 112 rises. Furthermore, if the third gear 152 rotates clockwise and the cam roller 259 engages with the engaging part 200, the balance block 118 moves in the first direction D1. That is, the balance block 118... Figure 15 The ground descends as shown on the right side of the map.

[0109] Furthermore, while the cam roller 157 is engaged with the engaging part 204, the cam roller 158 is engaged with the engaging part 205. Afterwards, the cam roller 157 disengages from the engaging part 204. And, as... Figure 16 As shown on the left, with the cam roller 158 engaged with the engaging part 205, the cam roller 202 engages with the engaging part 206. Therefore, the striking mechanism 12 rises further.

[0110] And, as Figure 15 As shown on the right, with the cam roller 159 engaged with the engaging part 200, the cam roller 203 engages with the engaging part 201. Next, as... Figure 16 As shown on the left, the cam roller 159 disengages from the engaging portion 200. Therefore, the balance block 118 descends further.

[0111] Moreover, such as Figure 16 As shown on the right, if the plunger 126 reaches the top dead center and the cam roller 202 disengages from the engaging portion 206, then as... Figure 17 As shown, plunger 126 descends due to the force of spring 136. Furthermore, as... Figure 16 As shown on the right, if the balance block 118 reaches the lower dead center and the cam roller 203 disengages from the engaging part 201, then as... Figure 17 As shown, the balance block 118 rises due to the force of the spring 136.

[0112] If the plunger 126 descends, i.e., the impact mechanism 112 descends, the impact pin 127 is driven to strike the fastener 125 located in the injection path 124. The fastener 125 is driven into the driven material W1. After the impact pin 127 strikes the fastener 125, the plunger 126 collides with the plunger buffer 138. The plunger buffer 138 absorbs a portion of the kinetic energy of the impact mechanism 112. Furthermore, the counterweight 118 collides with the counterweight buffer 137. The counterweight buffer 137 absorbs a portion of the kinetic energy of the reaction absorption mechanism 208.

[0113] Thus, when the striking mechanism 112 moves in the first direction D1 to strike the fastener 125, the balancing block 118 moves in the second direction D2, which is opposite to the first direction D1. Therefore, the reaction force when the striking mechanism 112 strikes the fastener 125 can be reduced.

[0114] The controller 140 determines the position of the plunger 126 in the direction of the centerline E1 and stops the electric motor 114 during the period from the moment the plunger 126 begins to descend until it collides with the plunger buffer 138. Therefore, the plunger 126 stops at the lower dead center where it contacts the plunger buffer 138, and the counterweight 118 stops at the upper dead center where it contacts the counterweight buffer 137. Furthermore, if the user releases the operating force on the trigger 142 and applies the operating force to the trigger 142 again, the controller 140 causes the electric motor 114 to rotate, and the striking mechanism 112 and the counterweight 118 operate in the same manner as described above.

[0115] As the plunger 126 rises against the force of the spring 136, the component transmitting the torque of the electric motor 114 to the plunger 126 switches from cam roller 157 to cam rollers 158 and 202. Here, the radius R12 is smaller than the radius R11. Therefore, as the striking mechanism 112 rises due to the torque of the electric motor 114, the torque arm shortens as the striking mechanism 112 approaches the top dead center. Thus, as the striking mechanism 112 approaches the top dead center, the increase in the load torque of the electric motor 114 can be suppressed. Furthermore, the torque applied from the striking mechanism 112 to the first gear 150... Figure 15 and Figure 16 The middle direction is counterclockwise.

[0116] Furthermore, when the balance block 118 descends against the force of the spring 136, the component that transmits the torque of the electric motor 114 to the balance block 118 is switched from the cam roller 159 to the cam roller 203. Here, the radius R14 is smaller than the radius R13. Therefore, as the balance block 118 descends due to the torque of the electric motor 114, the torque arm shortens as the balance block 118 approaches the lower dead center. Therefore, when the balance block 118 approaches the lower dead center, the increase in the load torque of the electric motor 114 can be suppressed. In addition, the torque applied to the first gear 150 from the reaction absorption mechanism 208 via the third gear 152 and the second gear 151... Figure 15 and Figure 16 The middle direction is counterclockwise.

[0117] Figure 18 The injection machine 110 shown does not have Figure 13 and Figure 14 An example of the reaction absorption mechanism 208 shown. Figure 18 The shown punching machine 110, in addition to the operation of the reaction absorption mechanism 208, can obtain the same as... Figure 13 and Figure 14It has the same function and effect as the injection machine 110 shown.

[0118] (Implementation Method 3)

[0119] Figure 19 This is a schematic diagram illustrating Embodiment 3 of the driving machine. The driving machine 70 includes a housing 71, an electric motor 72, a cylinder 73, a striking mechanism 74, a cam 75, a spring 76, and a buffer 77. The electric motor 72, cylinder 73, cam 75, spring 76, and buffer 77 are disposed within the housing 71. The cylinder 73 is fixedly disposed within the housing 71, and the striking mechanism 74 is movable in the direction of the centerline A3 of the cylinder 73. The striking mechanism 74 includes a piston 80 and a drive impact pin rod 81. The spring 76 is a metal compression spring, and the spring 76 is disposed in a compressed state within the cylinder 73. The spring 76 exerts a force on the striking mechanism 74 in a first direction B3, i.e., towards the buffer 77, using its elastic restoring force. Figure 19 This shows the state where the piston 80 is pushed against the buffer 77 and the striking mechanism 74 is at the bottom dead center.

[0120] Cam 75 is mounted on rotating shaft 78 and is equipped with a clutch that connects and disconnects the power transmission path between rotating shaft 78 and electric motor 72. When the clutch is engaged, cam 75 rotates counterclockwise due to the torque of electric motor 72. A winding portion 75A is formed on the outer peripheral surface of cam 75. The radius R4 from axis A4 to winding portion 75A is different in the rotation direction of cam 75.

[0121] A pair of guide rollers 82 are provided inside the housing 71. The first end of the line 79 is connected to the cam 75, and the second end of the line 79 is connected to the piston 80. The line 79 passes between the pair of guide rollers 82.

[0122] A phase detection sensor for detecting the phase of the rotation direction of the cam 75 is provided inside the housing 71. A controller for controlling the rotation and stopping of the electric motor 72 is also provided inside the housing 71. The signal from the phase detection sensor is input to the controller. The controller controls the engagement and disengagement of the clutch.

[0123] Figure 19 In the punching machine 70, if the electric motor 72 stops, the striking mechanism 74 is pushed against the buffer 77 by the force of the spring 76 and stops at the lower dead center. If the electric motor 72 rotates, the cam 75... Figure 19The winding mechanism rotates counterclockwise, and the wire 79 is wound onto the winding section 75A and pulled. When the wire 79 is pulled, the striking mechanism 74 moves in the second direction B4, i.e., rises. When the striking mechanism 74 reaches the top dead center, the controller disengages the clutch. Thus, the striking mechanism 74 descends due to the force of the spring 76 to strike the fastener. As the striking mechanism 74 descends, the wire 79 is pulled out from the winding section 75A. Afterwards, if the piston 80 collidees with the buffer 77, the controller stops the electric motor 72, thereby stopping the striking mechanism 74 at the bottom dead center.

[0124] When the electric motor 72 uses its torque to rotate the cam 75 to raise the striking mechanism 74, the radius R4 of the wire 79 wound at position P1 of the winding portion 75A decreases as the striking mechanism 74 rises. Thus, as the striking mechanism 74 rises, the radius R4 from axis A4 to position P1, i.e., the torque arm, shortens, and the traction force transmitted from the cam 75 to the wire 79 increases. Therefore, when raising the striking mechanism 74, the increase in the load torque of the electric motor 72 can be suppressed.

[0125] The meanings of the items described in embodiments 1 to 3 of the feeding machine will be explained. Pin 45 and cam 75 are examples of the first rotating member. First gear 150 and second gear 151 are examples of the second rotating member, and third gear 152 is an example of the third rotating member. Pressure chamber 13 and springs 76 and 136 are examples of the first moving mechanism, and electric motors 15, 72, and 114 are examples of motors. Main body 25K is an example of the first main body. Plunger 126 is an example of the second main body. Pin 45, cam 75, first gear 150, and second gear 151 are examples of the second moving mechanism. Spring 136 is an example of the third moving mechanism. Third gear 152, cam rollers 159 and 203 are examples of the fourth moving mechanism. Pins 45A to 45H, winding portion 75A, and cam rollers 157, 158, 159, 202, and 203 are examples of torque suppression mechanisms. Protrusions 25A-25H and 62A-62H are examples of multiple first engaging portions. Pins 45A-45H are examples of multiple second engaging portions. Engaging portions 204, 205, and 206 are examples of third engaging portions. Cam rollers 157, 158, and 202 are examples of fourth engaging portions. Engaging portions 200 and 201 are examples of fifth engaging portions. Cam rollers 159 and 203 are examples of sixth engaging portions. Pins 45F, 45G, and 45H are examples of high-load engaging portions, and pins 45A-45E are examples of low-load engaging portions. The top dead center is an example of a first position, and the bottom dead center is an example of a second position. Wire 79 is an example of wire, and pins 45A-45H and winding portion 75A are examples of transmission portions. Axis A2 is an example of a first axis, and axes E2 and E3 are examples of second axes. Axis E4 is an example of a third axis. Radius R1, R2, R3, R4, R5, R6, R11, R12, R13, and R14 are examples of distances. Reaction absorption mechanism 208 is an example of a reaction absorption mechanism, and balance block 118 is an example of a balance block.

[0126] The striking machine is not limited to embodiments 1, 2, and 3 described above, and various modifications can be made without departing from its essence. For example, in embodiments 1, 2, and 3, the motor that moves the striking mechanism in the second direction includes, in addition to an electric motor, a hydraulic motor and a pneumatic motor. The electric motor can be either a brushed motor or a brushless motor. The power supply for the electric motor can be either a DC power supply or an AC power supply. In addition to pins and cams, the rotating components also include gears, pulleys, and rotating shafts.

[0127] In embodiment 1, the amount by which the first engaging portion protrudes relative to the main body portion can be either the distance from the edge of the main body portion or the distance from the centerline of the main body portion. The plurality of second engaging portions are multiple pins provided on the rotating member; alternatively, they can be multiple teeth provided on the outer circumferential surface of a gear. The distance from the axis to the second engaging portion is equivalent to the distance from the axis to the tooth tip.

[0128] Refer to Implementation Method 1 Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 and Figure 11 The description states that the pin wheel 45 rotates counterclockwise due to the torque of the electric motor 15. In contrast, the description explains that the torque applied to the pin wheel 45 by the striking mechanism 12 is clockwise.

[0129] In embodiment 2, the first moving mechanism and the third moving mechanism of the inserter 110 can be set independently or shared. Figure 14 In the shown impactor 110, spring 136 functions as a first moving mechanism that applies force to the impact mechanism 112 in the first direction D1 and as a third moving mechanism that applies force to the reaction absorption mechanism 208 in the second direction D2. Alternatively, metal springs can be provided as the first moving mechanism that applies force to the impact mechanism in the first direction and as the third moving mechanism that applies force to the reaction absorption mechanism in the second direction.

[0130] In Embodiment 2, the second rotating member that rotates around the second axis can be a single member or multiple members. If the rotating member is a single member, all of the multiple fourth engaging portions are provided on the single second rotating member, and the second rotating member can rotate around the single second axis. If there are multiple second rotating members, the fourth engaging portions are provided on each of the multiple second rotating members. The multiple second rotating members can rotate around their respective second axes. Each of the multiple second rotating members has one or more fourth engaging portions. The distances of the fourth engaging portions provided on the multiple second rotating members from the center of each second rotating member, i.e., the second axis, are different from each other. Furthermore, when multiple fourth engaging portions are provided on a single second rotating member, the distances from the center of the second rotating member, i.e., the second axis, to the fourth engaging portions can be the same or different.

[0131] Furthermore, in Embodiment 2 of the punching machine, a structure in which multiple second rotating members rotate in the same direction can be adopted. For example, this can be implemented by winding a synchronous belt around multiple second rotating members. In this case, the position of the engaging portion provided in each second rotating member, the configuration radius of the engaging portion in each second rotating member, and the position of the engaging portion provided in the striking mechanism can be arbitrarily designed.

[0132] In implementation method 2, referring to Figure 15 , Figure 16 and Figure 17The description shows an example where the first gear 150 rotates clockwise due to the torque of the electric motor 114. In contrast, an example is shown where the torque applied to the first gear 150 from the striking mechanism 112 is in the counterclockwise direction.

[0133] In embodiment 3, the wire includes wire, cable, and rope. In embodiment 3, the wire may also be wound around a pulley between the cam and the striking mechanism. In embodiment 3, the parameters... Figure 19 The description shows an example where the cam 75 rotates counterclockwise due to the torque of the electric motor 72. In contrast, it shows an example where the torque applied to the cam 75 from the striking mechanism 74 is clockwise.

[0134] In the figures illustrating embodiments 1, 2, and 3, the clockwise and counterclockwise rotation of the rotating member are defined for ease of explanation, and they can be in opposite directions.

[0135] The first moving mechanism that moves the striking mechanism in the first direction includes a pneumatic spring, a metal spring, a non-ferrous metal spring, a magnetic spring, and synthetic rubber. The pressure chamber 13 described in Embodiment 1 is an example of a pneumatic spring. The metal spring and the non-ferrous metal spring can be either a compression spring or a tension spring. The metals described in Embodiments 1, 2, and 3 include iron and steel. The non-ferrous metals described in Embodiments 1, 2, and 3 include aluminum.

[0136] A magnetic spring uses the repulsive force between like poles of a magnet to move the striking mechanism in the first direction. Synthetic rubber uses the repulsive force of the synthetic rubber to move the striking mechanism in the first direction. The magnetic spring or synthetic rubber is housed within the outer casing.

[0137] Furthermore, the second moving mechanism can also be constructed by combining power transmission components such as pulleys, sprockets, chains, wires, and cables. The fourth moving mechanism can also be constructed by combining power transmission components such as pulleys, sprockets, chains, wires, and cables. Moreover, the first moving mechanism can be defined as the first force-applying mechanism, and the second moving mechanism can be defined as the second force-applying mechanism. Furthermore, the third moving mechanism can be defined as the third force-applying mechanism, and the fourth moving mechanism can be defined as the fourth force-applying mechanism. The striking mechanism can stop in a standby position, and the striking mechanism can also use its lower dead center as the standby position.

[0138] Additionally, the materials being driven into include floors, walls, ceilings, columns, and roofs. The materials used include wood, concrete, and plaster.

[0139] Explanation of symbols

[0140] 10, 70, 110—Infeeding machine; 12, 74, 112—Strike mechanism; 13—Pressure chamber; 15, 72, 114—Electric motor; 25K—Main body; 25A~25H, 62A~62H—Protrusion; 45—Pin wheel; 45A~45H—Pin; 75—Cam; 75A—Winding part; 76, 136—Spring; 79—Wire; 85—First region; 86—Second region; 118—Balance block; 126—Plunger; 150—First gear; 151— Second gear, 152—Third gear, 157, 158, 159, 202, 203—Cam rollers, 200, 201, 204, 205, 206—Engaging parts, 208—Reaction absorption mechanism, A2, A4, E2, E3, E4—Axis, B1, B3, D1—First direction, B2, B4, D2—Second direction, H1, H2—Protrusion amount, R1, R2, R3, R4, R5, R6, R11, R12, R13, R14—Radius.

Claims

1. An injection machine, characterized in that, have: The striking mechanism is capable of moving in a first direction from a first position toward a second position and in a second direction opposite to the first direction and from the second position toward the first position; A buffer component capable of contacting the aforementioned striking mechanism at the second position; A first moving mechanism moves the aforementioned striking mechanism in the aforementioned first direction to strike the fastener; motor; The second moving mechanism rotates due to the torque of the motor, and causes the striking mechanism to move in the second direction against the force of the first moving mechanism; and The controller is capable of controlling the aforementioned second moving mechanism. The aforementioned striking mechanism has a main body and a plurality of first engaging parts, which protrude from the main body in a direction intersecting with the movement direction of the main body and are arranged at intervals in the movement direction. The second moving mechanism described above has a rotating member and a plurality of second engaging portions, the plurality of second engaging portions being disposed on the rotating member and engaging with the plurality of first engaging portions. The aforementioned striking mechanism includes at least two first engaging portions whose protrusion from the main body increases in the first direction. After the striking mechanism moves from the first moving mechanism to the first direction, the controller causes the rotating member to rotate, thereby engaging the plurality of second engaging parts and the plurality of first engaging parts, causing the striking mechanism to move to the second direction and stop at a standby position between the first position and the second position, separated from the buffer.

2. The injection machine according to claim 1, characterized in that, The aforementioned main body has a central axis extending in the direction of movement. At least two of the aforementioned plurality of first engaging portions are configured such that the amount of protrusion from the aforementioned central axis increases on the aforementioned first direction side.

3. The injection machine according to claim 2, characterized in that, The first engaging portion closest to the first direction among the aforementioned plurality of first engaging portions is configured such that it protrudes the most from the main body portion.

4. The injection machine according to claim 1, characterized in that, When the striking mechanism is moved toward the second direction, the engagement positions of at least two of the plurality of second engaging portions with the first engaging portion become the inner side of the rotating member on the rear side of the rotation direction.

5. The injection machine according to claim 4, characterized in that, The engagement position of the second engagement portion located at the rearmost side of the rotation direction when the striking mechanism is moved to the second direction becomes the innermost side of the rotating member.

6. The injection machine according to claim 1, characterized in that, The aforementioned rotating member further includes a rotating shaft portion and a first plate portion and a second plate portion that are spaced apart and spaced apart in the axial direction of the aforementioned rotating shaft portion. The aforementioned plurality of second engaging portions are multiple pins supported between the aforementioned first plate portion and the aforementioned second plate portion. The at least two first engaging portions protruding from the main body with different protrusion amounts can respectively engage with the plurality of second engaging portions that serve as the plurality of pins. The controller stops the rotating member when the first engaging part and the second engaging part are engaged by the pin.

7. The injection machine according to claim 6, characterized in that, The rotating member includes two bearings that are respectively disposed on the first plate and the second plate in the axial direction of the rotating shaft and support the rotating shaft in a rotatable manner.

8. The injection machine according to claim 6, characterized in that, The first plate portion and the second plate portion described above have a first region and a second region located in different ranges in the aforementioned rotational direction. The radius of the first region is larger than the radius of the second region, and the plurality of second engaging portions are provided at positions corresponding to the first region.

9. The injection machine according to claim 1, characterized in that, The aforementioned rotational elements rotate around the axis. The aforementioned plurality of first engaging portions protrude from the aforementioned main body portion in the direction in which both the direction of movement of the aforementioned striking mechanism and the aforementioned axis intersect.

10. The injection machine according to claim 1, characterized in that, It also includes a phase detection sensor that is connected to the controller and detects that the striking mechanism is in the standby position.

11. The injection machine according to claim 1, characterized in that, It also includes a rotation limiting mechanism that bears the force of the first moving mechanism when the striking mechanism stops in the standby position.

12. The injection machine according to claim 1, characterized in that, The aforementioned first moving mechanism includes a pressure chamber that uses gas pressure to move the aforementioned striking mechanism in the aforementioned first direction.

13. An injection machine, characterized in that, have: The striking mechanism is capable of moving in a first direction and a second direction opposite to the first direction; A first moving mechanism moves the aforementioned striking mechanism in the aforementioned first direction to strike the fastener; motor; as well as The second moving mechanism rotates due to the torque of the motor, causing the striking mechanism to move in the second direction against the force of the first moving mechanism. The aforementioned striking mechanism has a main body and a plurality of first engaging parts, which protrude from the main body in a direction intersecting with the movement direction of the main body and are arranged at intervals in the movement direction. The aforementioned second moving mechanism has a rotating member and a plurality of second engaging portions, the plurality of second engaging portions being disposed on the rotating member and engaging with the plurality of first engaging portions. The plurality of first engaging portions of the aforementioned striking mechanism include at least two first engaging portions whose protrusion from the aforementioned main body portion increases in the amount protruding in the aforementioned first direction. The aforementioned rotating member further includes a rotating shaft portion and a first plate portion and a second plate portion disposed at a distance from each other on the axis of the aforementioned rotating shaft portion. The aforementioned plurality of second engaging portions are a plurality of pins disposed between the aforementioned first plate portion and the aforementioned second plate portion. The at least two first engaging portions protruding from the main body with different protrusion amounts can respectively engage with the plurality of second engaging portions that serve as the plurality of pins.

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