Fastener driver

Abstract

A fastener driver includes a striking unit, a driving unit, a driving unit, and a reset unit. The striking unit has an initial position, a first transition position, a second transition position, and a stored energy position. The driving unit has a first position corresponding to the first transition position and a second position corresponding to the second transition position. In the initial position, the striking unit and the driving unit are in an unengaged state. In the first transition position, the striking unit and the driving unit are engaged. In the second transition position, the striking unit and the driving unit are disengaged. When the striking unit is in the initial position, the driving unit engages the striking unit and drives the striking unit to move a predetermined distance. After the striking unit moves the predetermined distance, the driving unit engages the driving unit and drives the driving unit to move. The driving unit engages the striking unit at the first position and drives the striking unit to move from the first transition position to the second transition position. The reset unit provides a reset force for the driving unit to move from the second position to the first position.

Description

Technical Field

[0001] This application relates to the field of power tools, and more particularly to a fastener driving machine. Background Technology

[0002] Generally, a fastener driving machine includes an energy storage unit, a drive unit, and an impact unit. The impact unit moves along a first direction under the influence of energy released by the energy storage unit to drive the fastener into the workpiece. The drive unit includes multiple first meshing teeth, and the impact unit includes multiple second meshing teeth. During operation, the multiple first meshing teeth of the drive unit sequentially engage with the multiple second meshing teeth of the impact unit. The drive unit drives the impact unit to move along a second direction, allowing the energy storage unit to store energy. The second direction is opposite to the first direction. During the fastener driving process, fastener jamming may sometimes occur. When jammed, the impact unit may not stop at a position where it can properly engage with the drive unit, causing the fastener driving machine to malfunction.

[0003] Therefore, it is necessary to provide a new fastener driving machine. Summary of the Invention

[0004] This application provides a fastener insertion machine that operates stably and smoothly.

[0005] On one hand, this application provides a fastener driving machine, the fastener driving machine comprising:

[0006] Energy storage unit, used to store strike energy;

[0007] The impact unit receives energy from the energy storage unit and drives the fastener into the workpiece along a first direction.

[0008] The propulsion unit drives the impact unit to move;

[0009] The drive unit provides power to the propulsion unit and the impact unit;

[0010] The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction; the propulsion unit has a first position corresponding to the first transition position and a second position corresponding to the second transition position; in the initial position, the impact unit and the propulsion unit are in a non-cooperative state; in the first transition position, the impact unit and the propulsion unit cooperate; in the second transition position, the impact unit and the propulsion unit disengage.

[0011] When the impact unit is in the initial position, the driving unit cooperates with the impact unit and drives the impact unit to move. After the impact unit moves a preset distance, the driving unit cooperates with the propulsion unit and drives the propulsion unit to move. The propulsion unit cooperates with the impact unit at the first position and drives the impact unit to move from the first transition position to the second transition position.

[0012] The fastener driving machine further includes a reset unit, which provides a reset force for the propulsion unit to move from the second position to the first position.

[0013] Furthermore, after the impact unit reaches the second transition position, the driving unit drives the impact unit to move from the second transition position to the energy storage position.

[0014] Furthermore, the fastener driving machine also includes a support unit, which supports the energy storage unit, the impact unit, the propulsion unit and the drive unit;

[0015] The reset unit has a first end and a second end arranged in opposite directions. The first end is connected to the support unit, and the second end is connected to the propulsion unit.

[0016] Furthermore, the drive unit includes a motor and a drive mechanism, the motor provides power to the drive mechanism, and the drive mechanism includes a drive wheel, the drive wheel including a mating area and a non-matting area arranged along the circumference;

[0017] The mating area engages with the teeth of the propulsion unit to form a meshing state.

[0018] Furthermore, the impact unit includes a first protrusion and a second protrusion, and the driving mechanism includes a first engagement structure and a second engagement structure. The first engagement structure cooperates with the first protrusion to push the impact unit from the initial position to the first transition position, and the second engagement structure cooperates with the second protrusion to push the impact unit from the second transition position to the energy storage position.

[0019] Furthermore, the second engagement structure has a engaged state and a disengaged state with the second protrusion; when the second protrusion is in the disengaged state with the second engagement structure, the impact unit drives the fastener into the workpiece under the impact energy released by the energy storage unit.

[0020] Furthermore, the drive unit includes a drive mechanism, the drive mechanism includes a drive wheel, and the propulsion unit is disposed opposite to the drive wheel along a second direction; the propulsion unit includes a meshing tooth area, and in the second direction, the reset unit is located on the side of the meshing tooth area opposite to the drive wheel, and the second direction is perpendicular to the first direction.

[0021] Furthermore, the reset unit and the impact unit are arranged along a third direction, which is perpendicular to the first direction and the second direction.

[0022] Furthermore, the propulsion unit includes a groove that is open in the opposite direction to the first direction, and the impact unit includes a protrusion that mates with the groove;

[0023] During the movement of the propulsion unit from the first position to the second position, the protrusion is located within the groove, and the impact unit is pushed by the propulsion unit in the opposite direction to the first direction.

[0024] Furthermore, the fastener driving machine also includes a buffer component, and the pushing unit abuts against the buffer component after being reset by the reset unit.

[0025] On the other hand, this application also provides a fastener driving machine, the fastener driving machine comprising:

[0026] Energy storage unit, used to store strike energy;

[0027] The impact unit receives energy from the energy storage unit and drives the fastener into the workpiece along a first direction.

[0028] The propulsion unit drives the impact unit to move;

[0029] The drive unit provides power to the propulsion unit and the impact unit;

[0030] The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction; the propulsion unit has a first position corresponding to the first transition position and a second position corresponding to the second transition position; in the initial position, the impact unit and the propulsion unit are in a non-cooperative state; in the first transition position, the impact unit and the propulsion unit cooperate; in the second transition position, the impact unit and the propulsion unit disengage.

[0031] When the impact unit is in the initial position, the driving unit simultaneously drives the impact unit and the propulsion unit to move. The propulsion unit cooperates with the impact unit at the first position and drives the impact unit to move from the first transition position to the second transition position.

[0032] The fastener driving machine further includes a reset unit, which provides a reset force for the propulsion unit to move from the second position to the first position.

[0033] Furthermore, after the impact unit reaches the second transition position, the driving unit drives the impact unit to move from the second transition position to the energy storage position.

[0034] Furthermore, the propulsion unit includes a groove that is open in the opposite direction to the first direction, and the impact unit includes a protrusion that mates with the groove;

[0035] During the movement of the propulsion unit from the first position to the second position, the protrusion is located within the groove, and the impact unit is pushed by the propulsion unit in the opposite direction to the first direction.

[0036] Furthermore, the drive unit includes a motor and a drive mechanism, the motor provides power to the drive mechanism, and the drive mechanism includes a drive wheel, the drive wheel including a mating area and a non-matting area arranged along the circumference;

[0037] The mating area engages with the teeth of the propulsion unit to form a meshing state.

[0038] Furthermore, the impact unit includes a first protrusion and a second protrusion, and the driving mechanism includes a first engagement structure and a second engagement structure; the first engagement structure cooperates with the first protrusion to push the impact unit from the initial position to the first transition position; the second engagement structure cooperates with the second protrusion to push the impact unit from the second transition position to the energy storage position.

[0039] Furthermore, this application also provides a fastener driving machine, the fastener driving machine comprising:

[0040] Energy storage unit, used to store strike energy;

[0041] An impact unit receives energy from the energy storage unit and drives a fastener into a workpiece along a first direction. The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction.

[0042] A propulsion unit drives the impact unit to move. The propulsion unit has a starting position, a first position corresponding to the first transition position, and a second position corresponding to the second transition position.

[0043] The drive unit provides power to the propulsion unit and the impact unit;

[0044] In the initial position, the impact unit and the propulsion unit are not engaged; in the first transition position, the impact unit and the propulsion unit engage; in the second transition position, the impact unit and the propulsion unit disengage.

[0045] The drive unit is configured to drive the propulsion unit and the impact unit to move. During the process of the propulsion unit moving from the starting position to the first position, the propulsion unit chases the impact unit and cooperates with the impact unit after reaching the first position. The propulsion unit drives the impact unit to move from the first transition position to the second transition position.

[0046] The fastener driving machine further includes a reset unit, which provides a reset force for the propulsion unit to move from the second position to the first position.

[0047] In this application, the drive unit cooperates with the propulsion unit, and the propulsion unit cooperates with the impact unit. That is, the drive unit indirectly drives the impact unit through the propulsion unit; and the propulsion unit can be reset independently through the reset unit. When the impact unit stops at an abnormal position due to a jamming pin, the drive unit can always cooperate correctly with the propulsion unit and drive the propulsion unit to the abnormal position where the impact unit is stopped, so that the propulsion unit and the impact unit can cooperate correctly again. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the fastener driving machine (some structures have been omitted) according to the first embodiment of this application.

[0049] Figure 2 yes Figure 1 The diagram shows a structural schematic of the fastener driving machine from one perspective.

[0050] Figure 3 yes Figure 2 The fastener driving machine shown is a cross-sectional view along AA.

[0051] Figure 4 yes Figure 1 The diagram shows a structural schematic of the fastener driving machine from one perspective.

[0052] Figure 5 yes Figure 4 The fastener driving machine shown is a cross-sectional view along BB.

[0053] Figure 6 yes Figure 1 The diagram shows a partial structure of the fastener driving machine.

[0054] Figure 7 yes Figure 6 The diagram shows a partial view of the fastener driving machine.

[0055] Figure 8 yes Figure 7 This is another structural view of the fastener-driving machine shown.

[0056] Figure 9 yes Figure 8 The diagram shows a partial sectional view of the fastener-driving machine along the CC direction.

[0057] Figure 10 yes Figure 5 The diagram shows the structure of the impact unit and the piston.

[0058] Figure 11 This is a state diagram of a working cycle of the fastener driving machine according to the first embodiment of this application.

[0059] Figure 12 This is a diagram showing the states of a working cycle of the fastener driving machine according to the first embodiment of this application under jammed conditions.

[0060] Figure 13 This is a perspective view of a portion of the structure of the fastener driving machine according to the second embodiment of this application.

[0061] Figure 14 This is a state diagram of a working cycle of the fastener driving machine according to the second embodiment of this application.

[0062] Figure 15 This is a diagram showing the states of a working cycle of the fastener driving machine according to the second embodiment of this application under jammed conditions. Detailed Implementation

[0063] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0064] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application should be understood in their ordinary sense by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. “A plurality” or “several” indicates two or more. Unless otherwise stated, the terms “front,” “rear,” “lower,” and / or “upper,” and similar terms are for ease of description only and are not limited to a location or spatial orientation. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising,” encompass the elements or objects listed following “comprising,” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. The singular forms “a,” “the,” and “the” used in this application specification and appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0065] Please refer to Figures 1 to 12 The first embodiment of this application provides a fastener driving machine, which includes an energy storage unit 10, an impact unit 20, a propulsion unit 30, a drive unit 40, a support unit, and a reset unit 60. The support unit supports the energy storage unit 10, the impact unit 20, the propulsion unit 30, and the drive unit 40. The drive unit 40 provides power to the propulsion unit 30 and the impact unit 20. The reset unit 60 has a first end and a second end arranged opposite to each other. The first end is connected to the support unit, and the second end is connected to the propulsion unit 30. The support unit includes a base 51. The fastener driving machine also includes a fastener guide plate 52 and a fastener storage clamp 53. The fastener storage clamp 53 is connected to the fastener guide plate 52 and contains fasteners (not shown in the figure). The fastener storage clamp 53 can convey fasteners to the fastener guide plate 52, and the fastener guide plate 52 guides the fasteners. The fasteners are used to be driven into the workpiece by the impact unit 20. In this application, the fastener is a nail, the fastener guide plate 52 is a nail guide plate, and the fastener storage clip 53 is a nail clip.

[0066] The energy storage unit 10 is a medium that can store energy through displacement changes, such as an air spring, a mechanical spring, or a rubber component. In this application, the energy storage unit 10 is an air spring, which includes a cylinder 11, a piston 12, and a sealing ring 13. The cylinder 11 and the piston 12 form a closed space containing gas, and the cylinder 11 and the piston 12 are sealed together by the sealing ring 13. One end of the impact unit 20 is connected to the piston 12, and the other end of the impact unit 20 is used to drive the fastener into the workpiece. The impact unit 20 can move together with the piston 12. The energy storage unit 10 is used to store impact energy. When the energy storage unit 10 releases impact energy, the impact unit 20 receives the impact energy released by the energy storage unit 10 and drives the fastener into the workpiece along the first direction X.

[0067] The impact unit 20 has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction of the first direction X, with the first and second transition positions located between the initial position and the energy storage position. The piston 12 has a top dead center corresponding to the energy storage position and a bottom dead center corresponding to the initial position. When the impact unit 20 is in the energy storage position, the piston 12 is at the top dead center, and the energy storage unit 10 is in an energy storage state; when the impact unit 20 is in the initial position, the piston 12 is at the bottom dead center, and the energy storage unit 10 is in a release state. The propulsion unit 30 has a starting position, a first position corresponding to the first transition position, and a second position corresponding to the second transition position.

[0068] Initially, impact unit 20 and propulsion unit 30 are not engaged. In the first transition position, impact unit 20 and propulsion unit 30 engage. In the second transition position, impact unit 20 and propulsion unit 30 disengage. Drive unit 40 engages with impact unit 20 and drives it from the initial position to the first transition position. After moving a preset distance, drive unit 40 engages with propulsion unit 30 and drives it from the initial position to the first position. Since the speed of impact unit 20 is less than the speed of propulsion unit 30, propulsion unit 30 catches up with impact unit 20. Propulsion unit 30 engages with impact unit 20 at the first position, at which point impact unit 20 is located in the first transition position. Propulsion unit 30 engages with impact unit 20 at the first position and drives it from the first transition position to the second transition position. After impact unit 20 reaches the second transition position, drive unit 40 engages with impact unit 20, and drive unit 40 drives impact unit 20 from the second transition position to the energy storage position.

[0069] The drive unit 40 engages with or disengages from the propulsion unit 30; that is, the drive unit 40 has both engaged and disengaged states with the propulsion unit 30. Before the propulsion unit 30 engages with the impact unit 20, the drive unit 40 engages with the impact unit 20 to drive the impact unit 20 from its initial position to a first transition position. During the process of the drive unit 40 driving the impact unit 20 from its initial position to the first transition position, the drive unit 40 engages with the propulsion unit 30. When the drive unit 40 and the propulsion unit 30 are engaged, the drive unit 40 drives the propulsion unit 30 from its initial position to the first position. At the first position, the propulsion unit 30 engages with the impact unit 20 to push the impact unit 20 from the first transition position to a second transition position, and the impact unit 20 drives the piston 12 to move. When the propulsion unit 30 engages with the impact unit 20, the drive unit 40 and the impact unit 20 are about to disengage. During the process of the propulsion unit 30 pushing the impact unit 20, the drive unit 40 and the impact unit 20 engage again, and the drive unit 40 and the propulsion unit 30 are about to disengage. When the drive unit 40 disengages from the propulsion unit 30, the impact unit 20 is in the second transition position, and the propulsion unit 30 is in the second position. At this time, under the action of the reset unit 60, the propulsion unit 30 moves from the second position to the first position until it returns to the initial position. At the second transition position, the impact unit 20 disengages from the propulsion unit 30, and the drive unit 40 and the impact unit 20 are engaged. The drive unit 40 drives the impact unit 20 from the second transition position to the energy storage position until the impact unit 20 is in the energy storage position. At this time, the piston 12 is at top dead center, and the energy storage unit 10 is in an energy storage state. The reset unit 60 provides the reset force for the propulsion unit 30 to move from the second position to the first position until it returns to the initial position. Furthermore, when the propulsion unit 30 moves from the second position to the first position under the action of the reset unit 60, the impact unit 20 disengages from the propulsion unit 30 at the second transition position. The reset unit 60 extends along the direction of movement of the impact unit 20. In this application, the reset unit 60 is a tension spring, which includes a first end and a second end. The first end of the tension spring is mounted on a first hook 90, which is fixed to a fastener guide plate 52. The second end of the tension spring is connected to the push unit 30. Specifically, the push unit 30 includes a second hook 32, and the second end of the tension spring is mounted on the second hook 32. When the push unit 30 is in the second position, the tension spring is in a stretched state.

[0070] The propulsion unit 30 includes a groove 31 disposed on the side opposite to the fastener, the groove 31 being open in the opposite direction of the first direction X. The impact unit 20 includes a protrusion 21 that engages with the groove 31. During the movement of the propulsion unit 30 from the initial position to the first position, the protrusion 21 enters the groove 31. During the movement of the propulsion unit 30 from the first position to the second position, the protrusion 21 is located within the groove 31, and the impact unit 20 is pushed by the propulsion unit 30 in the opposite direction of the first direction X. When the propulsion unit 30 moves from the second position to the first position under the action of the reset unit 60, the protrusion 21 begins to disengage from the groove 31. In this application, the propulsion unit 30 is a rack, and the protrusion 21 is a pin mounted on the body of the impact unit 20.

[0071] The drive unit 40 includes a motor 43, an output shaft 410, a reduction mechanism 42, and a drive mechanism 41. The motor 43 provides power to the drive mechanism 41. The drive mechanism 41 includes a drive wheel 411, a first meshing structure 44, and a second meshing structure 45. The drive wheel 411 is mounted on the output shaft 410. The impact unit 20 includes a first protrusion 23 and a second protrusion 22. The first meshing structure 44 cooperates with the first protrusion 23 to push the impact unit 20 from an initial position to a first transition position. The second meshing structure 45 cooperates with the second protrusion 22 to push the impact unit 20 from a second transition position to an energy storage position. The drive wheel 411 includes a meshing area and a non-meshing area arranged along its circumference. The meshing area meshes with the teeth of the propulsion unit 30 to form a meshing state. Specifically, the meshing area includes multiple first meshing teeth 413, and the propulsion unit 30 includes multiple second meshing teeth 33. The multiple first meshing teeth 413 and the multiple second meshing teeth 33 mesh sequentially to form a meshing state. The first meshing structure 44 is disposed on the first meshing tooth 413 of the mating area of ​​the drive wheel 411. The mating area of ​​the drive wheel 411 begins to mesh with the propulsion unit 30 through the first meshing tooth 413. The first meshing structure 44 and the first meshing tooth 413 are arranged adjacent to each other along the axial direction of the output shaft 410. The second meshing structure 45 and the drive wheel 411 are distributed on different planes along the axial direction of the output shaft 410. The drive mechanism 41 includes a crank 412, which is sleeved and installed on the output shaft 410. The crank 412 includes a retaining shaft and a bushing sleeve sleeved and installed on the retaining shaft. The retaining shaft and the bushing sleeve serve as the second meshing structure 45, which meshes with the second protrusion 22 of the impact unit 20. The bushing is used to reduce friction and is not necessary for achieving the meshing function. The second engagement structure 45 engages or disengages with the second protrusion 22. The second engagement structure 45 has an engaged state and a disengaged state with the second protrusion 22. When the second protrusion 22 is in the disengaged state with the second engagement structure 45, the impact unit 20 drives the fastener into the workpiece under the impact energy released by the energy storage unit 10.

[0072] During the process of the drive unit 40 driving the impact unit 20 to move from the initial position to the first transition position, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 of the drive mechanism 41 of the drive unit 40 begins to mesh with the second meshing tooth 33 of the propulsion unit 30. When the drive unit 40 and the propulsion unit 30 are in the engagement state, the drive unit 40 drives the propulsion unit 30 to move from the initial position to the first position. At the first position, the propulsion unit 30 engages with the impact unit 20 to push the impact unit 20 from the first transition position to the second transition position, and the first meshing structure 44 and the first protrusion 23 are about to disengage. After the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 disengages from the second meshing tooth 33 of the propulsion unit 30, the second meshing structure 45 and the second protrusion 22 are in the engagement state. The second meshing structure 45 and the second protrusion 22 engage to push the impact unit 20 from the second transition position to the energy storage position.

[0073] Specifically, driven by the motor 43, the output shaft 410 begins to rotate. The drive wheel 411 and crank 412 rotate with the output shaft 410. The first meshing structure 44, located on the first meshing tooth 413, engages with the first protrusion 23 to drive the impact unit 20 from the initial position to the first transition position. During the movement of the impact unit 20 from the initial position to the first transition position, the first meshing tooth 413 in the engagement area of ​​the drive wheel 411 engages with the second meshing tooth 33 of the propulsion unit 30. When the first meshing tooth 413 in the engagement area of ​​the drive wheel 411 engages with the second meshing tooth 33 of the propulsion unit 30, the drive wheel 411 drives the propulsion unit 30 to move from the initial position to the first position. The propulsion unit 30 engages with the impact unit 20 at the first position, and the propulsion unit 30 pushes the impact unit 20 from the first transition position to the second transition position. The first meshing structure 44 and the first protrusion 23 are about to disengage. During the process of the propulsion unit 30 driving the impact unit 20 from the first transition position to the second transition position, the second meshing structure 45 and the second protrusion 22 cooperate to drive the impact unit 20 to move towards the energy storage position. During the process of the second meshing structure 45 and the second protrusion 22 cooperating to drive the impact unit 20 to move towards the energy storage position, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 and the second meshing tooth 33 of the propulsion unit 30 begin to disengage. When the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 disengages from the second meshing tooth 33 of the propulsion unit 30, the propulsion unit 30 is located in the second position, and the impact unit 20 is located in the second transition position. At this time, under the action of the reset unit 60, the propulsion unit 30 moves from the second position to the first position until it returns to the starting position. The second meshing structure 45 and the second protrusion 22 are in a cooperating state, and the drive unit 40 drives the impact unit 20 to move from the second transition position to the energy storage position until the impact unit 20 is located in the energy storage position. When the second engagement structure 45 disengages from the second protrusion 22, the impact unit 20, under the action of the impact energy released by the energy storage unit 10, drives the fastener into the workpiece along the first direction X.

[0074] The propulsion unit 30 and the drive wheel 411 are arranged opposite each other along the second direction Y. The propulsion unit 30 includes a meshing tooth area. In the second direction Y, the reset unit 60 is located on the side of the meshing tooth area of ​​the propulsion unit 30 facing away from the drive wheel 411. The second direction Y is perpendicular to the first direction X. The reset unit 60 and the impact unit 20 are arranged along the third direction Z. The third direction Z is perpendicular to the first direction X and the second direction Y.

[0075] Specifically, the reduction mechanism 42 is a gear transmission mechanism, used to reduce speed and increase torque. The gear transmission mechanism includes one or more stages of planetary gear transmission; in this application, it includes a three-stage planetary gear transmission. The gear transmission mechanism includes a one-way clutch, ensuring that when the drive mechanism 41 engages with the propulsion unit 30 or the impact unit 20 and the motor 43 does not provide torque, the force released by the energy storage unit 10 cannot reverse the drive mechanism 41. The speed and torque output by the motor 43 are transmitted to the output shaft 410 via the gear transmission mechanism, allowing the drive wheel 411 and crank 412 to rotate together with the output shaft 410. A snap ring is attached to the output shaft 410 to prevent the drive wheel 411 and crank 412 from disengaging from the output shaft 410.

[0076] The support unit also includes a guide rail 54, which is mounted on the base 51. The guide rail 54 has two grooves, in which the impact unit 20 and the propulsion unit 30 are respectively installed. The two grooves guide the impact unit 20 and the propulsion unit 30, allowing them to move in a straight line. The fastener driving machine also includes a first buffer 70 mounted on the fastener guide plate 52. When the propulsion unit 30 returns to its initial position under the action of the reset unit 60, the propulsion unit 30 abuts against the first buffer 70. The first buffer 70 is mounted on the fastener guide plate 52 to absorb the impact energy of the propulsion unit 30 during reset, as well as possible impacts from the impact unit 20 on the propulsion unit 30. At the same time, the first buffer 70 also limits the distance the propulsion unit 30 can move along the first direction X. The fastener driving machine also includes a second buffer 80 mounted between the base 51 and the piston 12. During the process of the impact unit 20 driving the energy storage unit 10 to store energy, the impact unit 20 drives the piston 12 to move away from the second buffer 80. During the process of impact unit 20 receiving energy released by energy storage unit 10 to drive fastener into workpiece, piston 12 drives impact unit 20 to move towards second buffer member 80 until piston 12 impacts second buffer member 80. When impact unit 20 completes the fastener driving action, the remaining energy of piston 12 will be absorbed or dissipated by second buffer member 80. This design can avoid damage to impact unit 20. At the same time, second buffer member 80 also limits the distance that impact unit 20 can move along the first direction X.

[0077] Please combine Figure 11 The states a, b, c, d, e, f, g, h, and i are given. Each state from a to i corresponds to one work cycle.

[0078] State a represents the initial state of the entire working cycle. At this time, the impact unit 20 is in the pre-compression position, and the piston 12 is near but has not yet reached the top dead center. The second protrusion 22 of the impact unit 20 engages with the second meshing structure 45 (i.e., the retaining shaft and bushing). At this time, the propulsion unit 30 returns to the starting position and is in close contact with the first buffer 70. The output shaft 410 rotates counterclockwise, as shown in state b. The output shaft 410 drives the drive wheel 411 and crank 412 to rotate. The second meshing structure 45 and the second protrusion 22 cooperate to drive the impact unit 20 to move in the opposite direction of the first direction X. The impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X until the piston 12 reaches the top dead center. The output shaft 410 continues to rotate counterclockwise, as shown in state c. The second protrusion 22 of the impact unit 20 disengages from the second meshing structure 45. Under the action of the force released by the energy storage unit 10, the impact unit 20 moves along the first direction X to drive the fastener into the workpiece. After the fastener is driven in, the piston 12 impacts the second buffer 80, and the piston 12 stops at the bottom dead center, while the impact unit 20 is in the initial position. The output shaft 410 drives the drive wheel 411 and the crank 412 to continue rotating counterclockwise, as shown in state d. The first meshing structure 44 and the first protrusion 23 cooperate to push the impact unit 20 to move in the opposite direction of the first direction X. That is, the first meshing structure 44 and the first protrusion 23 cooperate to push the impact unit 20 from the initial position to the first transition position. The first meshing tooth 413 of the meshing area of ​​the drive wheel 411 is about to mesh with the second meshing tooth 33 of the propulsion unit 30.

[0079] The output shaft 410 continues to rotate counterclockwise. As shown in state e, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 begins to mesh with the second meshing tooth 33 of the propulsion unit 30 to push the propulsion unit 30 to move in the opposite direction of the first direction X. The output shaft 410 continues to rotate counterclockwise, and the drive wheel 411 drives the propulsion unit 30 to move from the starting position to the first position. Since the movement speed of the impact unit 20 is less than the movement speed of the propulsion unit 30, the propulsion unit 30 catches up with the impact unit 20 in the opposite direction of the first direction X, so that the propulsion unit 30 engages with the impact unit 20 at the first position (i.e., the groove 31 of the propulsion unit 30 engages with the protrusion 21 of the impact unit 20). At this time, the impact unit 20 is located in the first transition position, and the propulsion unit 30 is located in the first position, as shown in state f. At this time, the first meshing structure 44 is about to disengage from the first protrusion 23. The output shaft 410 continues to rotate counterclockwise, as shown in state g. The output shaft 410 drives the drive wheel 411 and crank 412 to rotate. The drive wheel 411 drives the propulsion unit 30 to move. The propulsion unit 30 pushes the impact unit 20 from the first transition position to the second transition position. The impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X to compress the air spring. The first engagement structure 44 has disengaged from the first protrusion 23. The output shaft 410 continues to rotate counterclockwise, as shown in state h. The second engagement structure 45 (i.e., the retaining shaft and bushing) begins to engage with the second protrusion 22 of the impact unit 20. At the same time, the first engagement tooth 413 of the drive wheel 411 is about to disengage from the second engagement tooth 33 of the propulsion unit 30. The output shaft 410 continues to rotate counterclockwise. As shown in state i, the first meshing tooth 413 of the drive wheel 411 disengages from the second meshing tooth 33 of the propulsion unit 30. At this time, the propulsion unit 30 is in the second position. Under the action of the reset unit 60, the propulsion unit 30 will move from the second position to the first position until it is reset to the initial position and close to the first buffer 70, that is, the propulsion unit 30 returns to the initial position. At the same time, the impact unit 20 is in the second transition position. The second meshing structure 45 engages with the second protrusion 22 to drive the impact unit 20 from the second transition position to the energy storage position. The impact unit 20 drives the piston 12 to move to compress the air spring. The output shaft 410 continues to rotate counterclockwise, so that the second meshing structure 45 engages with the second protrusion 22 to drive the impact unit 20 to the pre-pressed position, and then stops, as shown in state a, completing the working cycle.

[0080] Please combine Figure 12When the fastener gets stuck for some reason, it gets stuck in the fastener guide plate 52. At this time, the impact unit 20 may stop at any position along the first direction X, as shown in state j. Since the propulsion unit 30 and the impact unit 20 are not fixedly connected, the propulsion unit 30 can return to the starting position and stick to the first buffer 70 under the action of the reset unit 60. Therefore, the first meshing tooth 413 of the mating area of ​​the drive wheel 411 can correctly mesh with the second meshing tooth 33 of the propulsion unit 30. The output shaft 410 continues to rotate counterclockwise, as shown in state k. The position where the impact unit 20 stops makes it impossible for the first meshing structure 44 to mesh with the first protrusion 23. The first meshing tooth 413 of the mating area of ​​the drive wheel 411 will directly mesh with the second meshing tooth 33 of the propulsion unit 30, pushing the propulsion unit 30 to move in the opposite direction of the first direction X. The output shaft 410 continues to rotate counterclockwise. As shown in state l, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 engages with the second meshing tooth 33 of the propulsion unit 30. The drive wheel 411 continues to drive the propulsion unit 30 to move in the opposite direction of the first direction X until the propulsion unit 30 re-engages with the impact unit 20. The propulsion unit 30 pushes the impact unit 20 to move, and the impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X to compress the air spring. The output shaft 410 continues to rotate counterclockwise. As shown in state h, the second engagement structure 45 (i.e., the retaining shaft and bushing) begins to engage with the second protrusion 22 of the impact unit 20. At the same time, the first meshing tooth 413 of the drive wheel 411 is about to disengage from the second meshing tooth 33 of the propulsion unit 30. The output shaft 410 continues to rotate counterclockwise. As shown in state i, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 disengages from the second meshing tooth 33 of the propulsion unit 30. At this time, the propulsion unit 30 is in the second position. The propulsion unit 30 will move from the second position to the first position under the action of the reset unit 60 until it is reset to the starting position and close to the first buffer 70, that is, the propulsion unit 30 returns to the starting position. At the same time, the impact unit 20 is in the second transition position. The second meshing structure 45 engages with the second protrusion 22 to continue driving the impact unit 20 from the second transition position to the energy storage position. The impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X to compress the air spring. The output shaft 410 continues to rotate counterclockwise, so that the second meshing structure 45 engages with the second protrusion 22 to drive the impact unit 20 to the pre-compression position, and then stops, as shown in state a, completing the working cycle.

[0081] Please combine Figures 13 to 15The second embodiment of this application also provides a fastener driving machine, which includes an energy storage unit 10, an impact unit 20, a propulsion unit 30, a drive unit 40, a support unit, and a reset unit 60. The support unit supports the energy storage unit 10, the impact unit 20, the propulsion unit 30, and the drive unit 40. The drive unit 40 provides power to the propulsion unit 30 and the impact unit 20. The energy storage unit 10 is a medium that can store energy through displacement changes, such as an air spring, a mechanical spring, or a rubber element. In this application, the energy storage unit 10 is an air spring, which includes a cylinder 11, a piston 12, and a sealing ring 13. The cylinder 11 and the piston 12 form a closed space containing gas, and the cylinder 11 and the piston 12 are sealed by the sealing ring 13. One end of the impact unit 20 is connected to the piston 12, and the other end of the impact unit 20 is used to drive the fastener into the workpiece. The impact unit 20 can move together with the piston 12. The energy storage unit 10 is used to store impact energy. When the energy storage unit 10 releases impact energy, the impact unit 20 receives the energy released by the energy storage unit 10 and drives the fastener into the workpiece along the first direction X.

[0082] The impact unit 20 has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction X, with the first transition position and the second transition position located between the initial position and the energy storage position. The propulsion unit 30 has a starting position, a first position corresponding to the first transition position, and a second position corresponding to the second transition position.

[0083] The propulsion unit 30 cooperates with the impact unit 20 to drive the impact unit 20 to move, and the propulsion unit 30 drives the impact unit 20 from the first transition position to the second transition position. In the initial position, the impact unit 20 and the propulsion unit 30 are not in a cooperative state; in the first transition position, the impact unit 20 and the propulsion unit 30 are in a cooperative state; in the second transition position, the impact unit 20 and the propulsion unit 30 are disengaged.

[0084] When the impact unit 20 is in the initial position, the drive unit 40 simultaneously drives both the impact unit 20 and the propulsion unit 30 to move (i.e., the drive unit 40 cooperates with the impact unit 20 to drive the impact unit 20 from the initial position to the first transition position, and simultaneously, the drive unit 40 cooperates with the propulsion unit 30 to drive the propulsion unit 30 from the initial position to the first position). Since the movement speed of the impact unit 20 is less than that of the propulsion unit 30, the propulsion unit 30 catches up with the impact unit 20 and cooperates with the impact unit 20 at the first position. At this time, the impact unit 20 is in the first transition position. When the propulsion unit 30 cooperates with the impact unit 20, the drive unit 40 and the impact unit 20 are about to disengage. The propulsion unit 30 cooperates with the impact unit 20 and drives the impact unit 20 to move from the first transition position to the second transition position. During the process of the propulsion unit 30 pushing the impact unit 20 from the first transition position to the second transition position, the drive unit 40 and the impact unit 20 cooperate again. After the impact unit 20 reaches the second transition position, the drive unit 40 and the impact unit 20 are in a cooperative state, and the drive unit 40 drives the impact unit 20 to move from the second transition position to the energy storage position.

[0085] The fastener insertion machine also includes a reset unit 60, which provides a reset force to the propulsion unit 30 to move from the second position to the first position. The propulsion unit 30 moves from the second position to the first position under the action of the reset force of the reset unit 60.

[0086] The drive unit 40 can engage or disengage with the propulsion unit 30, and has both engaged and disengaged states. The drive unit 40 includes a motor 43, an output shaft 410, a reduction mechanism 42, and a drive mechanism 41. The motor 43 provides power to the drive mechanism 41. The drive mechanism 41 includes a drive wheel 411 mounted on the output shaft 410. The drive wheel 411 includes an engaging region and a non-engaging region arranged along its circumference. The engaging region engages with the teeth of the propulsion unit 30 to form a meshing state.

[0087] The propulsion unit 30 includes a groove 31, which is open in the opposite direction to the first direction X. The impact unit 20 includes a protrusion 21 that engages with the groove 31. During the movement of the propulsion unit 30 from the initial position to the first position, the protrusion 21 enters the groove 31. During the movement of the propulsion unit 30 from the first position to the second position, the protrusion 21 is located within the groove 31, and the impact unit 20 is pushed by the propulsion unit 30 in the opposite direction to the first direction X. When the propulsion unit 30 moves from the second position to the first position, the protrusion 21 begins to disengage from the groove 31.

[0088] The impact unit 20 includes a first protrusion 23 and a second protrusion 22, and the drive mechanism 41 includes a first engagement structure 44 and a second engagement structure 45. The first engagement structure 44 is disposed in the mating area. The first engagement structure 44 cooperates with the first protrusion 23 to push the impact unit 20 from the initial position to the first transition position; the second engagement structure 45 cooperates with the second protrusion 22 to push the impact unit 20 from the second transition position to the energy storage position. When the impact unit 20 is in the initial position, the first engagement structure 44 cooperates with the first protrusion 23 and drives the impact unit 20 to move. At the same time, the drive unit 40 cooperates with the propulsion unit 30 and drives the propulsion unit 30 to move.

[0089] Please combine Figure 14 The states a, b, c, d, e, f, g, and h are given. States a through h correspond to one work cycle.

[0090] State a represents the initial state of the entire working cycle. At this time, the impact unit 20 is in the pre-compression position, and the piston 12 is near but has not yet reached the top dead center. The second protrusion 22 of the impact unit 20 engages with the second meshing structure 45 (i.e., the retaining shaft and bushing). At this time, the propulsion unit 30 returns to the starting position and is in close contact with the first buffer 70. The output shaft 410 rotates counterclockwise, as shown in state b. The output shaft 410 drives the drive wheel 411 and crank 412 to rotate. The second meshing structure 45 and the second protrusion 22 cooperate to drive the impact unit 20 to move in the opposite direction of the first direction X. The impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X until the piston reaches the top dead center. The output shaft 410 continues to rotate counterclockwise, as shown in state c. The second protrusion 22 of the impact unit 20 disengages from the second meshing structure 45. Under the action of the force released by the energy storage unit 10, the impact unit 20 moves in the first direction X to drive the fastener into the workpiece. After the fastener is driven in, the piston 12 impacts the second buffer 80, and the piston 12 stops at the bottom dead center, while the impact unit 20 is in the initial position. The output shaft 410 drives the drive wheel 411 and the crank 412 to continue rotating counterclockwise. As shown in state d, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 engages with the second meshing tooth 33 of the propulsion unit 30 to push the propulsion unit 30 to move in the opposite direction of the first direction X. That is, the drive wheel 411 drives the propulsion unit 30 to move from the initial position to the first position. At the same time, the first meshing structure 44 and the first protrusion 23 begin to engage to push the impact unit 20 to move in the opposite direction of the first direction X. That is, the first meshing structure 44 and the first protrusion 23 engage to push the impact unit 20 to move from the initial position to the first transition position.

[0091] The output shaft 410 continues to rotate counterclockwise, as shown in state e. Since the movement speed of the impact unit 20 is less than that of the propulsion unit 30, the propulsion unit 30 catches up with the impact unit 20 in the opposite direction of the first direction X, so that the propulsion unit 30 engages with the impact unit 20 at the first position (i.e., the groove 31 of the propulsion unit 30 engages with the protrusion 21 of the impact unit 20). When the propulsion unit 30 is in the first position, the impact unit 20 is in the first transition position. At this time, the first engagement structure 44 is about to disengage from the first protrusion 23. The output shaft 410 continues to rotate counterclockwise, as shown in state f. The output shaft 410 drives the drive wheel 411 and the crank 412 to rotate. The drive wheel 411 drives the propulsion unit 30 to move. The propulsion unit 30 pushes the impact unit 20 from the first transition position to the second transition position. The impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X to compress the air spring. The first engagement structure 44 has disengaged from the first protrusion 23. The output shaft 410 continues to rotate counterclockwise. As shown in state g, the second engagement structure 45 (i.e., the retaining shaft and bushing) begins to engage with the second protrusion 22 of the impact unit 20. At the same time, the first engagement tooth 413 of the drive wheel 411 is about to disengage from the second engagement tooth 33 of the propulsion unit 30. The output shaft 410 continues to rotate counterclockwise. As shown in state h, the first engagement tooth 413 of the drive wheel 411 disengages from the second engagement tooth 33 of the propulsion unit 30. At this time, the propulsion unit 30 is located in the second position. The propulsion unit 30 is about to move from the second position to the first position under the action of the reset unit 60 until it is reset to the starting position and close to the first buffer 70, that is, the propulsion unit 30 returns to the starting position. At the same time, the impact unit 20 is located in the second transition position. The second engagement structure 45 engages with the second protrusion 22 to drive the impact unit 20 to move from the second transition position to the energy storage position. The impact unit 20 drives the piston 12 to move to compress the air spring. The output shaft 410 continues to rotate counterclockwise, causing the second engagement structure 45 to engage with the second protrusion 22 to drive the impact unit 20 to the pre-pressed position, and then stops, as shown in state a, completing the working cycle.

[0092] Please combine Figure 15When the fastener gets stuck for some reason, it gets stuck in the fastener guide plate 52. At this time, the impact unit 20 may stop at any position along the first direction X, as shown in state j. Since the propulsion unit 30 and the impact unit 20 are not fixedly connected, the propulsion unit 30 can return to the starting position and stick to the first buffer 70 under the action of the reset unit 60. Therefore, the first meshing tooth 413 of the mating area of ​​the drive wheel 411 can correctly mesh with the second meshing tooth 33 of the propulsion unit 30. The output shaft 410 continues to rotate counterclockwise, as shown in state k. The position where the impact unit 20 stops makes it impossible for the first meshing structure 44 to mesh with the first protrusion 23. The first meshing tooth 413 of the mating area of ​​the drive wheel 411 will directly mesh with the second meshing tooth 33 of the propulsion unit 30, pushing the propulsion unit 30 to move in the opposite direction of the first direction X. As the output shaft 410 continues to rotate counterclockwise, as shown in state l, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 begins to mesh with the second meshing tooth 33 of the propulsion unit 30. That is, the drive wheel 411 drives the propulsion unit 30 to move from the starting position in the opposite direction of the first direction X until the propulsion unit 30 re-engages with the impact unit 20. The propulsion unit 30 pushes the impact unit 20 to move, and the impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X to compress the air spring. As the output shaft 410 continues to rotate counterclockwise, as shown in state g, the second engagement structure 45 (i.e., the retaining shaft and bushing) begins to mesh with the second protrusion 22 of the impact unit 20. At the same time, the first meshing tooth 413 of the drive wheel 411 is about to disengage from the second meshing tooth 33 of the propulsion unit 30. The output shaft 410 continues to rotate counterclockwise. As shown in state h, the first meshing tooth 413 of the engagement area of ​​the drive wheel 411 disengages from the second meshing tooth 33 of the propulsion unit 30. At this time, the propulsion unit 30 is in the second position. The propulsion unit 30 will move from the second position to the first position under the action of the reset unit 60 until it is reset to the starting position and close to the first buffer 70, that is, the propulsion unit 30 returns to the starting position. At the same time, the impact unit 20 is in the second transition position. The second meshing structure 45 engages with the second protrusion 22 to continue driving the impact unit 20 from the second transition position to the energy storage position. The impact unit 20 drives the piston 12 to move in the opposite direction of the first direction X to compress the air spring. The output shaft 410 continues to rotate counterclockwise, so that the second meshing structure 45 engages with the second protrusion 22 to drive the impact unit 20 to the pre-pressed position, and then stops, as shown in state a, completing the working cycle.

[0093] In this application, the drive unit 40 can indirectly engage with the impact unit 20 through the propulsion unit 30, and the propulsion unit 30 can return to the initial position independently through the reset unit 60. When the impact unit 20 stops at an abnormal position due to a jamming pin, the drive unit 40 can always correctly engage with the propulsion unit 30 and drive the propulsion unit 30 to the abnormal position where the impact unit 20 is stopped, thereby enabling the propulsion unit 30 to re-engage with the impact unit 20 correctly.

[0094] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A fastener driving machine, characterized in that, The fastener driving machine includes: Energy storage unit, used to store strike energy; The impact unit receives energy from the energy storage unit and drives the fastener into the workpiece along a first direction. The propulsion unit drives the impact unit to move; The drive unit provides power to the propulsion unit and the impact unit; The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction; the propulsion unit has a first position corresponding to the first transition position and a second position corresponding to the second transition position; in the initial position, the impact unit and the propulsion unit are in a non-cooperative state; in the first transition position, the impact unit and the propulsion unit cooperate; in the second transition position, the impact unit and the propulsion unit disengage. When the impact unit is in the initial position, the driving unit cooperates with the impact unit and drives the impact unit to move. After the impact unit moves a preset distance, the driving unit cooperates with the propulsion unit and drives the propulsion unit to move. The propulsion unit cooperates with the impact unit at the first position and drives the impact unit to move from the first transition position to the second transition position. After the impact unit reaches the second transition position, the driving unit drives the impact unit to move from the second transition position to the energy storage position. The fastener driving machine further includes a reset unit, which provides a reset force for the propulsion unit to move from the second position to the first position.

2. The fastener driving machine according to claim 1, characterized in that, The fastener driving machine also includes a support unit, which supports the energy storage unit, the impact unit, the propulsion unit and the drive unit; The reset unit has a first end and a second end arranged in opposite directions. The first end is connected to the support unit, and the second end is connected to the propulsion unit.

3. The fastener driving machine according to claim 1, characterized in that, The drive unit includes a motor and a drive mechanism. The motor provides power to the drive mechanism. The drive mechanism includes a drive wheel, and the drive wheel includes a mating area and a non-matting area arranged along the circumference. The mating area engages with the teeth of the propulsion unit to form a meshing state.

4. The fastener driving machine according to claim 3, characterized in that, The impact unit includes a first protrusion and a second protrusion, and the driving mechanism includes a first engagement structure and a second engagement structure. The first engagement structure cooperates with the first protrusion to push the impact unit from the initial position to the first transition position, and the second engagement structure cooperates with the second protrusion to push the impact unit from the second transition position to the energy storage position.

5. The fastener driving machine according to claim 4, characterized in that, The second engagement structure has a engaged state and a disengaged state with the second protrusion; when the second protrusion is in the disengaged state with the second engagement structure, the impact unit drives the fastener into the workpiece under the impact energy released by the energy storage unit.

6. The fastener driving machine according to claim 1, characterized in that, The drive unit includes a drive mechanism, the drive mechanism includes a drive wheel, and the propulsion unit is disposed opposite to the drive wheel along a second direction; the propulsion unit includes a meshing tooth area, and in the second direction, the reset unit is located on the side of the meshing tooth area opposite to the drive wheel, and the second direction is perpendicular to the first direction.

7. The fastener driving machine according to claim 6, characterized in that, The reset unit and the impact unit are arranged along a third direction, which is perpendicular to the first direction and the second direction.

8. The fastener driving machine according to claim 1, characterized in that, The propulsion unit includes a groove that is open in the opposite direction to the first direction, and the impact unit includes a protrusion that mates with the groove. During the movement of the propulsion unit from the first position to the second position, the protrusion is located within the groove, and the impact unit is pushed by the propulsion unit in the opposite direction to the first direction.

9. The fastener driving machine according to claim 1, characterized in that, The fastener driving machine also includes a buffer component, and the pushing unit abuts against the buffer component after being reset by the reset unit.

10. A fastener driving machine, characterized in that, The fastener driving machine includes: Energy storage unit, used to store strike energy; The impact unit receives energy from the energy storage unit and drives the fastener into the workpiece along a first direction. The propulsion unit drives the impact unit to move; The drive unit provides power to the propulsion unit and the impact unit; The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction; the propulsion unit has a first position corresponding to the first transition position and a second position corresponding to the second transition position; in the initial position, the impact unit and the propulsion unit are in a non-cooperative state; in the first transition position, the impact unit and the propulsion unit cooperate; in the second transition position, the impact unit and the propulsion unit disengage. When the impact unit is in the initial position, the driving unit simultaneously drives the impact unit and the propulsion unit to move. The propulsion unit cooperates with the impact unit at the first position and drives the impact unit to move from the first transition position to the second transition position. After the impact unit reaches the second transition position, the driving unit drives the impact unit to move from the second transition position to the energy storage position. The fastener driving machine further includes a reset unit, which provides a reset force for the propulsion unit to move from the second position to the first position.

11. The fastener driving machine according to claim 10, characterized in that, The propulsion unit includes a groove that is open in the opposite direction to the first direction, and the impact unit includes a protrusion that mates with the groove. During the movement of the propulsion unit from the first position to the second position, the protrusion is located within the groove, and the impact unit is pushed by the propulsion unit in the opposite direction to the first direction.

12. The fastener driving machine according to claim 10, characterized in that, The drive unit includes a motor and a drive mechanism. The motor provides power to the drive mechanism. The drive mechanism includes a drive wheel, and the drive wheel includes a mating area and a non-matting area arranged along the circumference. The mating area engages with the teeth of the propulsion unit to form a meshing state.

13. The fastener driving machine according to claim 12, characterized in that, The impact unit includes a first protrusion and a second protrusion, and the driving mechanism includes a first engagement structure and a second engagement structure; the first engagement structure cooperates with the first protrusion to push the impact unit from the initial position to the first transition position; the second engagement structure cooperates with the second protrusion to push the impact unit from the second transition position to the energy storage position.

14. A fastener driving machine, characterized in that, The fastener driving machine includes: Energy storage unit, used to store strike energy; An impact unit receives energy from the energy storage unit and drives a fastener into a workpiece along a first direction. The impact unit has an initial position, a first transition position, a second transition position, and an energy storage position arranged in the opposite direction to the first direction. A propulsion unit drives the impact unit to move. The propulsion unit has a starting position, a first position corresponding to the first transition position, and a second position corresponding to the second transition position. The drive unit provides power to the propulsion unit and the impact unit; In the initial position, the impact unit and the propulsion unit are not engaged; in the first transition position, the impact unit and the propulsion unit engage; in the second transition position, the impact unit and the propulsion unit disengage. The drive unit is configured to drive the propulsion unit and the impact unit to move. During the process of the propulsion unit moving from the starting position to the first position, the propulsion unit chases the impact unit and cooperates with the impact unit after reaching the first position. The propulsion unit drives the impact unit to move from the first transition position to the second transition position. After the impact unit reaches the second transition position, the drive unit drives the impact unit to move from the second transition position to the energy storage position. The fastener driving machine further includes a reset unit, which provides a reset force for the propulsion unit to move from the second position to the first position.

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