Transmission pressurizing device of nailing device

Abstract

The utility model discloses a nailing device transmission pressurizing device which comprises a main air cylinder, an auxiliary air cylinder, a transmission mechanism and an electric drive pressurizing mechanism, the main air cylinder is communicated with the auxiliary air cylinder through a rear end cylinder cover, and the transmission mechanism comprises a nailing rod piston, a transmission piston, a transmission pulley and a transmission belt. The nailing rod piston and the transmission piston are arranged in the main air cylinder and the auxiliary air cylinder respectively, the transmission pulleys are fixed to the rear end cylinder cover and the transmission piston respectively, one end of the transmission belt is fixed to the nailing rod piston, and the other end of the transmission belt sequentially bypasses the transmission pulleys and then is fixed to the rear end cylinder cover. The electrically-driven pressurizing mechanism is fixed to the front end of the auxiliary air cylinder and can control the transmission piston to reciprocate front and back. The key improvement of the utility model lies in that a belt-type transmission pressurization structure formed by matching the transmission pulley and the transmission belt is adopted, and the purposes of simplifying the product structure, reducing the motor load, reducing the product quality and reducing the manufacturing cost can be achieved on the premise of meeting the nailing requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of nail drivers, in particular to a transmission pressurizing device for nail drivers. Background Art

[0002] A nail driver is a fastening tool that can quickly fasten nails to a substrate. Compared with traditional fastening methods such as hand hammer nail fixing and expansion bolt fixing, fixing nails with a nail driver has many advantages such as low labor intensity, safety and reliability, and high construction efficiency.

[0003] At present, the mainstream fastening tools on the market mainly include nailers powered by gunpowder nail bullets, nailers powered by gas, and nailers powered by electricity. However, since the first two types of fastening tools not only have safety hazards, but are also easily transformed into lethal weapons, electric fastening tools are increasingly widely used.

[0004] At present, the commonly used electric fastening tools are mainly double-cylinder nailers, such as the double-cylinder electric nailer disclosed in the patent document with publication number CN114750111A, which adopts a transmission and pressurization structure of a motor-driven firing pin and a secondary piston, and has a good nailing effect. However, since it requires a motor to drive the firing pin and the secondary piston at the same time, not only does it lead to a more complicated transmission and pressurization structure and a larger load on the motor, but it also leads to a heavier weight and higher cost of the nailer. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical problems existing in the prior art and to provide a nail driver transmission pressurizing device. The key improvement point of the utility model is to adopt a belt transmission pressurizing structure formed by the cooperation of a transmission pulley and a transmission belt, which can achieve the purpose of simplifying the product structure, reducing the motor load, reducing the product quality and reducing the manufacturing cost under the premise of meeting the nailing requirements.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] A nail driving transmission and pressurizing device, characterized in that it includes a main cylinder, a sub-cylinder, a transmission mechanism and an electric-driven pressurizing mechanism, the main cylinder and the sub-cylinder are connected through a rear end cylinder cover, the transmission mechanism includes a nailing rod piston, a transmission piston, a transmission pulley and a transmission belt, the nailing rod piston and the transmission piston are respectively arranged in the main cylinder and the sub-cylinder, the transmission pulleys are respectively fixed on the rear end cylinder cover and the transmission piston, one end of the transmission belt is fixed on the nailing rod piston, and the other end is fixed on the rear end cylinder cover after passing through the transmission pulleys in sequence; the electric-driven pressurizing mechanism is fixed on the front end of the sub-cylinder and can control the transmission piston to move back and forth, and when the transmission piston moves from back to front, it can drive the nailing rod piston to move from front to back, and when the transmission piston moves from front to back, it can compress air to store energy.

[0008] The transmission pulley comprises a fixed pulley and a movable pulley, the fixed pulley is respectively fixed on the rear end cylinder cover up and down, the movable pulley is fixed on the transmission piston, one end of the transmission belt is fixed on the nail rod piston, and the other end is fixed on the rear end cylinder cover after passing through the fixed pulley and the movable pulley in sequence.

[0009] When the transmission piston moves from back to front, the movement stroke of the nail driving rod piston is twice the movement stroke of the transmission piston.

[0010] The transmission pressurizing device also includes a reset assembly fixed on the rear end cylinder cover, the reset assembly includes a self-reset wheel and a reset belt, the self-reset wheel is located above the transmission pulley, the reset belt is movably attached to the transmission belt, one end of the reset belt is fixed on the self-reset wheel, and the other end is fixed near the transmission piston; when the transmission piston moves from front to back, the self-reset wheel tightens the transmission belt through the reset belt.

[0011] The electric drive pressurizing mechanism includes a motor, a reducer, a ball screw and a ball nut. The ball nut is located in the auxiliary cylinder and fixed on the transmission piston. The motor and the reducer are fixed through the front cylinder cover of the auxiliary cylinder. One end of the ball screw is threadedly connected in the ball nut, and the other end passes through the front cylinder cover belt and is connected to the motor through the reducer; the motor controls the reciprocating motion of the transmission piston through the reducer, the ball screw and the ball nut.

[0012] The electric drive pressurizing mechanism is provided with a brake device, which includes a brake link, a brake column and an electromagnet. The brake link is movably connected to the lower part of the master cylinder through a bearing, the brake link is sleeved on the electric drive pressurizing mechanism, the brake column is fixed on the upper part of the brake link, and an anti-rotation plane is provided on the brake column; the electromagnet is connected to the lower part of the brake link, and the electromagnet has a working state and a non-working state. In the non-working state, the anti-rotation plane does not contact the electric drive pressurizing mechanism, and the electric drive pressurizing mechanism can rotate; in the working state, the electromagnet controls the rotation of the brake column through the brake link, so that the anti-rotation plane limits the rotation of the electric drive pressurizing mechanism.

[0013] The main cylinder comprises a front cylinder and a rear cylinder. The front cylinder and the rear cylinder are sealed and fixed by a tensioning plate, and the rear cylinder and the auxiliary cylinder are connected by a rear end cylinder cover.

[0014] By adopting the above technical solution, the beneficial technical effects of the utility model are:

[0015] 1. The utility model mainly adopts a transmission pressurizing device formed by the cooperation of a main cylinder, a sub-cylinder, a nail rod piston, a transmission piston, a transmission pulley, a transmission belt and an electric drive pressurizing mechanism. Compared with the existing gear-type structure, the utility model can achieve the purpose of simplifying the nailer structure, reducing the motor load, reducing product quality and reducing manufacturing costs under the premise of meeting the nailing requirements.

[0016] 2. The utility model adopts a transmission pulley (fixed pulley and movable pulley) in combination with a transmission belt to replace the existing complex transmission structure, ensuring that the compression stroke of the nail rod piston is twice the stroke of the transmission piston, shortening the auxiliary cylinder stroke, and reducing the load of the electric drive pressurizing mechanism. While meeting the specified requirements, it greatly saves space, reduces the weight of the entire nailer, and saves manufacturing costs, and is also beneficial to motor selection.

[0017] 3. The reset assembly adopted in the utility model can give a tightening force to the transmission belt when the transmission piston is compressed, so as to tension the transmission belt and prevent the transmission belt from accumulating in the auxiliary cylinder. It can not only avoid the transmission belt from accumulating in the auxiliary cylinder during the compression process and affecting the nailing power, but also prevent the transmission belt itself, bearings and other parts from being damaged when the nail rod piston moves forward at high speed and drives the transmission belt back to the main cylinder, thereby helping to extend the life of the parts.

[0018] 4. The utility model can adjust the stroke of the transmission piston through the cooperation of the motor, reducer, ball screw and ball nut, which is conducive to the flexible adjustment of the pressure in the main cylinder and the auxiliary cylinder, and then can realize the dynamic adjustment of the power of the nailer, and the control method is simple and effective with high accuracy. In addition, when the gas in the cylinder is in a high-pressure state, leakage will inevitably occur. If the air pressure in the cylinder leaks, the motor can also adjust the linear motion stroke to compensate for the micro leakage of the high-pressure gas, which not only makes up for the defect of insufficient power caused by air pressure leakage, but also prolongs the air replenishment cycle of the nailer.

[0019] 5. The utility model adopts a motor as the power source for air compression. The motor provides power to the transmission piston through the linear motion mechanism (ball screw and ball nut) between the motor and the auxiliary cylinder to achieve gas compression in the cylinder. Since a linear motion mechanism is provided between the motor and the transmission piston, the ball screw can obtain a large axial thrust with a small torque, so that the power required for high-pressure gas compression is reduced, so that the compression and energy storage of high-pressure gas in the cylinder is not laborious, that is, the energy storage method of the nail driver is simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the exploded structure of the utility model;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the utility model installed on a nailing machine (I);

[0022] Figure 3 This is a cross-sectional structural schematic diagram of the utility model installed on a nailing machine (II);

[0023] Figure 4 This is a schematic diagram of the top plan structure of the utility model installed on a nailing machine;

[0024] Figure 5 This is a schematic diagram of the planar structure of the utility model installed on a nailing machine;

[0025] Figure 6 for Figure 5 Schematic diagram of the decomposition structure.

[0026] The following are marked in the figure: 1. Transmission pressure device, 2. Nail tube, 3. Safety device;

[0027] 1.1. Main cylinder, 1.2. Auxiliary cylinder, 1.3. Transmission mechanism, 1.4. Electric drive pressurizing mechanism, 1.5. Rear end cylinder cover, 1.6. Nail rod piston, 1.7. Transmission piston, 1.8. Fixed pulley, 1.9. Movable pulley, 1.10. Transmission belt, 1.11. Motor, 1.12. Reducer, 1.13. Ball screw, 1.14. Ball nut, 1.15. Tension plate, 1.16. Reset wheel, 1.17. Reset belt, 1.18. Brake connecting rod, 1.19. Brake column, 1.20. Electromagnet. DETAILED DESCRIPTION

[0028] Example 1

[0029] The present embodiment provides a transmission pressurizing device for a nail driver. The transmission pressurizing device 1 is mainly used in a double-cylinder fastening tool. In actual application, a pressurizable nail tube 2 needs to be installed at the front end through a safety device 3. The three cooperate to realize the nailing function.

[0030] like Figure 1-6 As shown, the transmission pressurizing device includes a main cylinder 1.1, a sub-cylinder 1.2, a transmission mechanism 1.3 and an electric drive pressurizing mechanism 1.4. The main cylinder 1.1 and the sub-cylinder 1.2 are fixed by a tensioning seat. The fixed main cylinder 1.1 is located above the sub-cylinder 1.2, and the rear end of the main cylinder 1.1 is connected to the rear end of the sub-cylinder 1.2 through the rear end cylinder cover 1.5. In order to simplify the structure of the nailer and facilitate disassembly and assembly, the rear end cylinder cover 1.5 is usually an integrated structure, which has the function of simultaneously blocking the rear end of the main cylinder 1.1 and the rear end of the sub-cylinder 1.2, and connecting the rear end of the main cylinder 1.1 with the rear end of the sub-cylinder 1.2. Of course, a split structure can also be used in actual use.

[0031] Furthermore, the transmission mechanism 1.3 includes a nail rod piston 1.6, a transmission piston 1.7, a transmission pulley 1.9 and a transmission belt 1.10. The nail rod piston 1.6 is movably arranged in the main cylinder 1.1, and is used to connect the nail rod. One end of the nail rod is fixed on the nail rod piston 1.6, and the other end can be extended into the nail tube 2 through the safety device 3. In actual application, after the nail rod piston 1.6 is pressurized and stored, it can drive the nail rod to perform the nailing action. The transmission piston 1.7 is movably arranged in the auxiliary cylinder 1.2, and the transmission pulley 1.9 is respectively fixed on the rear end cylinder cover 1.5 and the transmission piston 1.7. One end of the transmission belt 1.10 is fixed on the piston of the nail rod piston 1.6, and the other end is fixed on the rear end cylinder cover 1.5 after passing through the transmission pulley 1.9 on the rear end cylinder cover 1.5 and the transmission pulley 1.9 on the transmission piston 1.7 in turn. It should be noted that the other end of the transmission belt 1.10 is fixed to the rear end cylinder cover 1.5, the purpose of which is to increase the movement stroke of the nail rod piston 1.6 under the premise of ensuring a small movement stroke of the transmission piston 1.7. Of course, the above structure is a preferred method. According to different actual conditions, the other end of the transmission belt 1.10 can also be directly fixed to the transmission pulley 1.9 of the transmission piston 1.7 or pass through the rear end cylinder cover 1.5 for fixing, etc., and the two are equivalent structures.

[0032] Furthermore, the electric drive pressurizing mechanism 1.4 is fixed at the front end of the auxiliary cylinder 1.2 and connected to the transmission piston 1.7. The electric drive pressurizing mechanism 1.4 can control the transmission piston 1.7 to reciprocate back and forth in the auxiliary cylinder 1.2. When the electric drive pressurizing mechanism 1.4 controls the transmission piston 1.7 to move from back to front in the auxiliary cylinder 1.2, the transmission piston 1.7 can drive the nail rod piston 1.6 to move from front to back through the transmission pulley 1.9 and the transmission belt 1.10; when the electric drive pressurizing mechanism 1.4 controls the transmission piston 1.7 to move from front to back in the auxiliary cylinder 1.2, the transmission piston 1.7 can compress the air in the auxiliary cylinder 1.2 to store energy when it moves from front to back.

[0033] It should be noted that this embodiment can be used in conjunction with the conventional safety device 3 and nail tube 2 to form a nailing device in actual application. The safety device 3 has a locked state and an unlocked state. Since the nailing rod is fixed on the nailing rod piston 1.6, the safety device 3 can lock the nailing rod in the locked state and release the lock of the nailing rod in the unlocked state. Usually, when the nailing rod piston 1.6 moves to the rear end set position, the nailing rod and the nailing rod piston 1.6 are locked by the safety device 3.

[0034] According to the preferred implementation of this embodiment, Figure 1-6As shown, the transmission pulley 1.9 includes a fixed pulley 1.8 and a movable pulley 1.9. The fixed pulley 1.8 is respectively fixed on the rear end cylinder cover 1.5, and the movable pulley 1.9 is fixed on the transmission piston 1.7. One end of the transmission belt 1.10 is fixed to the middle of the nail rod piston 1.6, and the other end is fixed to the rear end cylinder cover 1.5 after passing through the fixed pulley 1.8 and the movable pulley 1.9 in sequence.

[0035] It should be noted that, due to the limited internal space of the nail driver, the number of fixed pulleys 1.8 is usually two, and the number of movable pulleys 1.9 is usually one. One of the fixed pulleys 1.8 is fixed to the middle and upper part of the rear end cylinder cover 1.5 through a pulley seat, the other fixed pulley 1.8 is fixed to the middle and lower part of the rear end cylinder cover 1.5 through a pulley seat, and the movable pulley 1.9 is fixed to the transmission piston 1.7 through a pulley seat.

[0036] According to the preferred implementation of this embodiment, when the transmission piston 1.7 moves from back to front, the movement stroke of the nail rod piston 1.6 is twice the movement stroke of the transmission piston 1.7. On the one hand, it can shorten the movement stroke of the transmission piston 1.7 and reduce the load of the electric drive pressurizing mechanism 1.4, and on the other hand, it can reduce the volume and weight of the nailer while meeting the specified requirements.

[0037] According to the preferred implementation of this embodiment, Figure 1-6 As shown, the electric drive pressurizing mechanism 1.4 includes a motor 1.11, a reducer 1.12, a ball screw 1.13 and a ball nut 1.14. The ball nut 1.14 is located in the auxiliary cylinder 1.2 and fixed on the transmission piston 1.7. The motor 1.11 and the reducer 1.12 are fixed through the front cylinder cover of the auxiliary cylinder 1.2. One end of the ball screw 1.13 is threadedly connected in the ball nut 1.14, and the other end passes through the front cylinder cover belt and is connected to the motor 1.11 through the reducer 1.12; the motor 1.11 can control the transmission piston 1.7 to reciprocate forward and backward through the reducer 1.12, the ball screw 1.13 and the ball nut 1.14. For example, when the motor 1.11 rotates forward, it can drive the transmission piston 1.7 to move from back to front through the ball screw 1.13, and when the motor 1.11 rotates reversely, it can drive the transmission piston 1.7 to move from front to back through the ball screw 1.13.

[0038] Furthermore, according to an alternative implementation of the present embodiment, the above-mentioned electric drive pressurizing mechanism 1.4 can also adopt the driving structure disclosed in documents with publication numbers CN117047708A, CN114750111A and the like.

[0039] According to the preferred implementation of this embodiment, Figure 1-6As shown, the main cylinder 1.1 includes a front cylinder and a rear cylinder, the front cylinder and the rear cylinder are sealed and fixed by a tension plate 1.15, and the rear cylinder and the auxiliary cylinder 1.2 are connected by a rear end cylinder cover 1.5. This embodiment facilitates the early installation and later maintenance of the transmission mechanism 1.3 by splitting the main cylinder 1.1 into a front and rear cylinder structure.

[0040] Figure 2 , 3 The compression energy storage state diagram and the nailing process state diagram of the embodiment are respectively shown. Figure 2 , 3 The working principle of the nailer is described in detail as follows:

[0041] 1. Compression energy storage process of nail driver

[0042] (1) The motor 1.11 is controlled to rotate forward. The motor 1.11 drives the transmission piston 1.7 to move from back to front (from right to left) through the ball screw 1.13. Correspondingly, the transmission piston 1.7 drives the nail rod piston 1.6 to move from front to back (from left to right) through the transmission pulley 1.9 and the transmission belt 1.10. When the nail rod piston 1.6 moves to the rear end setting position of the main cylinder 1.1, the nail rod and the nail rod piston 1.6 are locked by the safety device 3. At this time, the nail rod piston 1.6 cannot move.

[0043] (2) The motor 1.11 is controlled to reverse. The motor 1.11 drives the transmission piston 1.7 to move from front to back through the ball screw 1.13. The transmission piston 1.7 compresses the air in the auxiliary cylinder 1.2 backward to make it high-pressure gas, completing the compression energy storage of the nail rod piston 1.6 (nail driver). Its state is as follows: Figure 2 After the compression energy storage is completed, the transmission belt 1.10 changes from a tensioned state to a relaxed state.

[0044] 2. The nailing (firing) process of the nail driver

[0045] Place the nail tube 2 against the object to be operated, press the nail tube 2 and release the locking of the nail rod and the nail rod piston 1.6 through the safety device 3. The nail rod will drive the nail pre-placed in the nail tube 2 into the base body under the drive of the high-pressure gas to complete the nailing process. Figure 3 Then release the nail tube 2, the safety device 3 and the nail tube 2 automatically reset, and wait for the next nailing.

[0046] In summary, this embodiment adopts the above-mentioned specific transmission pressure structure, so when it is applied to a nail driver, it can achieve the purpose of simplifying the structure of the nail driver, reducing the motor load, reducing product quality and reducing manufacturing costs while meeting the nailing requirements.

[0047] Example 2

[0048] This embodiment further improves the transmission pressure device based on the embodiment 1. Figure 1-6 As shown, the transmission pressurizing device also includes a reset assembly fixed on the rear end cylinder cover 1.5, and the reset assembly includes a self-reset wheel 1.16 and a reset belt 1.17. The self-reset wheel 1.16 adopts a self-reset structure similar to a tape measure, and is installed on the upper part of the rear end cylinder cover 1.5 and located above the transmission pulley 1.9 through structural parts such as coil springs. The reset belt 1.17 is movably attached to the transmission belt 1.10, and one end of the reset belt 1.17 is fixed on the self-reset wheel 1.16, and the other end is fixed near the transmission piston 1.7. When the transmission piston 1.7 moves from front to back to compress the air in the auxiliary cylinder 1.2, the coil spring loses its pulling force, and the self-reset wheel 1.16 will retract the transmission belt 1.10 through the reset belt 1.17, thereby preventing the transmission belt 1.10 from accumulating in the cylinder.

[0049] Example 3

[0050] When the nail driver is not in use, a certain residual pressure may be generated in the cylinder, which may cause the transmission piston 1.7 to rotate through the ball screw 1.13. To prevent the motor 1.11 from rotating, this embodiment further improves the electric drive pressurizing mechanism based on the first or second embodiment. Figure 1-6 As shown, a brake device is provided on the electric drive pressurizing mechanism 1.4, and the brake device includes a brake link 1.18, a brake column 1.19 and an electromagnet 1.20. The brake link 1.18 is a U-shaped structure, which is movably connected to the lower part of the master cylinder 1.1 through a tensioning seat and a bearing. The brake link 1.18 is sleeved on the electric drive pressurizing mechanism 1.4, and the brake column 1.19 is fixed on the upper part of the brake link 1.18, and an anti-rotation plane is provided on the brake column 1.19; the electromagnet 1.20 is connected to the lower part of the brake link 1.18 through the shell of the nail driver, and the electromagnet 1.20 has a working state and a non-working state. In the non-working state, the anti-rotation plane does not contact the electric drive pressurizing mechanism 1.4, and the electric drive pressurizing mechanism 1.4 can rotate; in the working state, the electromagnet 1.20 controls the rotation of the brake column 1.19 through the brake link 1.18, so that the anti-rotation plane limits the rotation of the electric drive pressurizing mechanism 1.4.

[0051] It should be noted that when the brake device is used, the motor 1.11 in the electric drive pressurizing mechanism 1.4 needs to use an outer rotor motor 1.11. Based on this, the brake device can play a role in limiting the rotation of the motor 1.11.

[0052] The above description is only a specific implementation method of the present utility model. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all disclosed features, or all methods or steps in the process, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A nail driving transmission pressurizing device, characterized in that: The invention comprises a main cylinder (1.1), a sub-cylinder (1.2), a transmission mechanism (1.3) and an electric drive pressurizing mechanism (1.4); the main cylinder (1.1) and the sub-cylinder (1.2) are connected via a rear end cylinder cover (1.5); the transmission mechanism (1.3) comprises a nail driving rod piston (1.6), a transmission piston (1.7), a transmission pulley (1.9) and a transmission belt (1.10); the nail driving rod piston (1.6) and the transmission piston (1.7) are respectively arranged in the main cylinder (1.1) and the sub-cylinder (1.2); the transmission pulley (1.9) is respectively fixed On the rear end cylinder cover (1.5) and the transmission piston (1.7), one end of the transmission belt (1.10) is fixed to the nail rod piston (1.6), and the other end is fixed to the rear end cylinder cover (1.5) after passing through the transmission pulley (1.9) in sequence; the electric drive pressurizing mechanism (1.4) is fixed to the front end of the auxiliary cylinder (1.2) and can control the transmission piston (1.7) to reciprocate forward and backward, and when the transmission piston (1.7) moves from rear to front, it can drive the nail rod piston (1.6) to move from front to rear, and when the transmission piston (1.7) moves from front to rear, it can compress air to store energy.

2. A nail driver transmission pressurizing device according to claim 1, characterized in that: The transmission pulley (1.9) comprises a fixed pulley (1.8) and a movable pulley (1.9), the fixed pulley (1.8) being fixed on the rear end cylinder cover (1.5) at the top and bottom, respectively, the movable pulley (1.9) being fixed on the transmission piston (1.7), one end of the transmission belt (1.10) being fixed on the nail rod piston (1.6), and the other end being fixed on the rear end cylinder cover (1.5) after passing through the fixed pulley (1.8) and the movable pulley (1.9) in sequence.

3. A nail driver transmission pressurizing device according to claim 1, characterized in that: When the transmission piston (1.7) moves from back to front, the movement stroke of the nail driving rod piston (1.6) is twice the movement stroke of the transmission piston (1.7).

4. A nail driver transmission and pressure device according to any one of claims 1 to 3, characterized in that: The transmission pressure device (1) also includes a reset assembly fixed to the rear end cylinder cover (1.5), the reset assembly including a self-reset wheel (1.16) and a reset belt (1.17), the self-reset wheel (1.16) is located above the transmission pulley (1.9), the reset belt (1.17) is movably attached to the transmission belt (1.10), one end of the reset belt (1.17) is fixed to the self-reset wheel (1.16), and the other end is fixed near the transmission piston (1.7); when the transmission piston (1.7) moves from front to back, the self-reset wheel (1.16) tightens the transmission belt (1.10) through the reset belt (1.17).

5. The nail driver transmission pressure device according to claim 1, characterized in that: The electric drive pressurizing mechanism (1.4) comprises a motor (1.11), a reducer (1.12), a ball screw (1.13) and a ball nut (1.14); the ball nut (1.14) is located in the auxiliary cylinder (1.2) and fixed on the transmission piston (1.7); the motor (1.11) and the reducer (1.12) are fixed via the front cylinder cover of the auxiliary cylinder (1.2); one end of the ball screw (1.13) is threadedly connected in the ball nut (1.14), and the other end passes through the front cylinder cover belt and is connected to the motor (1.11) via the reducer (1.12); the motor (1.11) controls the transmission piston (1.7) to reciprocate forward and backward through the reducer (1.12), the ball screw (1.13) and the ball nut (1.14).

6. A nail driver transmission pressurizing device according to claim 5, characterized in that: The electric drive pressurizing mechanism (1.4) is provided with a brake device, which includes a brake connecting rod (1.18), a brake column (1.19) and an electromagnet (1.20). The brake connecting rod (1.18) is movably connected to the lower part of the master cylinder (1.1) through a bearing. The brake connecting rod (1.18) is sleeved on the electric drive pressurizing mechanism (1.4). The brake column (1.19) is fixed to the upper part of the brake connecting rod (1.18), and an anti-lock brake is provided on the brake column (1.19). The electromagnet (1.20) is connected to the lower part of the brake connecting rod (1.18), and the electromagnet (1.20) has a working state and a non-working state. In the non-working state, the anti-rotation plane is not in contact with the electric drive pressurizing mechanism (1.4), and the electric drive pressurizing mechanism (1.4) can rotate; in the working state, the electromagnet (1.20) controls the rotation of the brake column (1.19) through the brake connecting rod (1.18), so that the anti-rotation plane restricts the rotation of the electric drive pressurizing mechanism (1.4).

7. A nail driver transmission pressurizing device according to claim 1, characterized in that: The main cylinder (1.1) comprises a front cylinder and a rear cylinder; the front cylinder and the rear cylinder are sealed and fixed via a tensioning plate (1.15); the rear cylinder and the auxiliary cylinder (1.2) are connected via a rear end cylinder cover (1.5).

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