CN217168399U - Power mechanism for double-cylinder nail shooting fastener - Google Patents

Abstract

The utility model discloses a power mechanism for a double-cylinder nail-shooting fastener, comprising a motor, a reducer, a one-way clutch, a transmission shaft, a firing pin toggle assembly and a piston control assembly. The motor, the reducer, the one-way clutch , the drive shaft, and the firing pin toggle assembly are connected in sequence, and the piston control assembly is connected between the reducer and the one-way clutch; when the motor rotates forward, the motor controls the action of the firing pin toggle assembly and the piston control assembly at the same time; when the motor When reversing, the motor controls the action of the piston control assembly. The power mechanism can realize the compression of the high-pressure gas in the cylinder under the condition of less load, and can automatically adjust the gas pressure in the cylinder by adjusting the stroke of the power mechanism, so as to realize the adjustment of different nailing power, and solve the problem of the prior art. The technical problem of difficulty in effectively compressing higher pressure gases.

Description

A power mechanism for a double-cylinder nail-shooting fastener

technical field

The utility model belongs to the technical field of nail-shooting fastening, in particular to a power mechanism for a double-cylinder nail-shooting fastener.

Background technique

The nail fastener is a commonly used tool in the construction, decoration and other industries. It can instantly inject the nail into the matrix. Compared with the traditional expansion bolt, the nail fastener is used to shoot nails, steel nails and other nails. It has the advantages of low labor intensity, safety and reliability, high construction efficiency, comprehensive cost saving, less dust and no damage to the foundation.

At present, most of the commonly used nail fasteners have a double-cylinder structure. For example, the publication number CN112828827A discloses a pneumatic nail gun with adjustable nailing force, which includes a casing and a striker, and a first A cylinder and a second cylinder, a first piston is arranged in the first cylinder, and the first piston divides a first air chamber, a second piston is arranged in the second cylinder, the striker is fixedly connected to the second piston, and the first cylinder is The second air chamber is divided by the two pistons, and the first air chamber and the second air chamber are communicated with each other through a fully enclosed ventilation channel, so that the first air chamber, the ventilation channel and the second air chamber form a pneumatic closed relative to the outside world. The pneumatic structure is provided with an air hole that can keep the pneumatic structure in communication with the outside world, and the casing is provided with a handle that can adjust the ventilation volume between the air hole and the outside world. Since the air hole is a static ventilation structure, the adjustment accuracy can be maintained for a long time. Although the nailing gun has a good nailing effect, the following technical problems still exist in the practical application of the nailing gun:

First of all, the nail gun uses a crank-rocker structure for gas compression and energy storage, and this structure is difficult to achieve effective compression of high-pressure gas, so its nailing power is low.

Secondly, when the compressed gas is stored for energy storage, the nailer starts to pressurize and store energy from 1 atmosphere, which leads to a very large pressurizing stroke to achieve high-pressure gas to increase the power.

Finally, the reset of the second piston in the second cylinder is realized by the negative pressure formed by the movement of the first piston in the first cylinder in the direction of increasing the volume. The reset of the air chamber and the air hole has very high requirements on the stability of the geometric shape design of the air chamber and the air hole and the related parameters, resulting in poor universality.

Utility model content

The purpose of this utility model is to overcome the above-mentioned technical problems existing in the prior art, and to provide a power mechanism for a double-cylinder nail fastener, which can realize the compression of the high-pressure gas in the cylinder under the condition of a small bearing capacity, Moreover, the gas pressure in the cylinder can be automatically adjusted by adjusting the stroke of the power mechanism, so as to realize the adjustment of different nailing powers, which solves the technical problem that it is difficult to effectively compress high-pressure gas in the prior art.

For achieving the above object, the technical scheme adopted by the present utility model is as follows:

A power mechanism for a double-cylinder nail fastener is characterized in that it comprises a motor, a reducer, a one-way clutch, a transmission shaft, a firing pin toggle assembly and a piston control assembly, the motor, the reducer, the one-way clutch, The transmission shaft and the striker toggle assembly are connected in sequence, and the piston control assembly is connected between the reducer and the one-way clutch; when the motor rotates forward, the motor simultaneously controls the action of the striker toggle assembly and the piston control assembly; When turning, the motor controls the action of the piston control assembly.

The firing pin toggle assembly includes an upper turning wheel, a lower turning wheel, a central shaft and a plurality of turning columns for controlling the action of the firing pin, the central shaft is fixed on the transmission shaft, and the upper turning wheel and the lower turning wheel are respectively fixed on the At both ends of the central shaft, a plurality of toggle columns are evenly fixed on one side between the upper rotating wheel and the lower rotating wheel in an arc-shaped arrangement.

The arc length of the toggle column after being fixed in an arc shape is greater than or equal to the arc length of the other side between the upper rotating wheel and the lower rotating wheel.

The speed reducer includes a first speed reducer and a second speed reducer connected in sequence, and the piston control assembly is connected between the first speed reducer and the second speed reducer.

The piston control assembly is connected between the speed reducer and the one-way clutch through a bevel gear.

The piston control assembly includes a ball screw, a screw bearing seat and a screw shaft sleeve for fixed connection with the piston. One end of the ball screw is connected to the motor after passing through the screw bearing seat, and the other end is connected to the screw shaft sleeve. connect.

Adopting the above-mentioned technical scheme, the beneficial technical effects of the present utility model are:

1. The utility model adopts the power mechanism composed of a motor, a reducer, a one-way clutch, a transmission shaft, a firing pin toggle assembly and a piston control assembly, which can simultaneously control the firing pin toggle assembly and the piston control assembly when the motor is rotating forward. Action, control the movement of the piston control assembly when the motor is reversed. It should be noted that the function of the striker toggle assembly is to directly control the movement of the striker, and can indirectly drive the movement of the main piston in the main cylinder through the striker, while the function of the piston control assembly is to control the auxiliary piston in the auxiliary cylinder. movement to achieve the pressurized energy storage of the main cylinder. Therefore, by adjusting the speed of the motor, the pressure in the main cylinder and the auxiliary cylinder can be flexibly adjusted, thereby realizing the dynamic adjustment of the power of the nail fastener, which can realize the compression of the high-pressure gas in the cylinder under the condition of less load, and The control method is simple and effective, and the accuracy is high. 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 compression stroke of the auxiliary piston can also be adjusted by the motor to compensate for the micro-leakage of the high-pressure gas. The air pressure leakage leads to the defect of insufficient power, and also prolongs the air replenishment period of the nail fastener. Further, the use of this power mechanism is equivalent to decomposing the pressurized energy storage process of the nail-shooting fastener into two processes, which simplifies the product structure while increasing the power, reduces the weight of the product and reduces the burden on the power mechanism. Make it more stable and safe in the energy storage process.

2. The present invention adopts a firing pin toggle assembly composed of an upper rotating wheel, a lower rotating wheel, a central shaft and a plurality of toggle columns, which is beneficial to increase the contact between the toggle column and the preset toggle teeth on the firing pin. area, thereby increasing the smoothness of the toggle, making it more uniform in force.

3. The utility model sets the arc length of the toggle column after being fixed in an arc shape to be greater than or equal to the arc length of the other side between the upper rotating wheel and the lower rotating wheel. Effectively moving the firing pin, on the other hand, ensures the space requirement of the firing pin during the firing process.

4. The utility model adopts a two-stage reducer, on the one hand, when the motor is rotating forward, the firing pin toggle assembly can drive the firing pin movement more smoothly; The pressurized energy storage process is beneficial to improve the firing efficiency of the product.

5. The utility model adopts the bevel gear to drive the piston control assembly, which is beneficial to improve the control stability of the piston control assembly.

6. The utility model adopts the ball screw, the screw bearing seat and the screw shaft sleeve as the piston control assembly, which can obtain a large axial thrust with a small torque, so that the power required for the compression of the high-pressure gas is reduced.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the utility model.

FIG. 2 is a schematic top view of the structure of the present invention.

Figure 3 is a schematic diagram of the explosion structure of the present invention.

FIG. 4 is a schematic three-dimensional structural diagram of the striker toggle assembly of the present invention.

Marked as: 1, motor, 2, first reducer, 3, second reducer, 4, drive shaft, 5, piston control assembly, 6, striker toggle assembly, 7, upper rotating wheel, 8, Lower rotating wheel, 9, central shaft, 10, toggle column, 11, bevel gear, 12, ball screw, 13, screw bearing seat, 14, screw bushing, 15, main cylinder, 16, auxiliary cylinder, 17. Main piston, 18. Secondary piston, 19. Firing needle, 20. Needle tube assembly, 21. Locking mechanism, 22. Toggle teeth.

Detailed ways

The utility model discloses a power mechanism for a double-cylinder nail fastener. The dual-cylinder nail fastener mainly comprises a main cylinder 15, a secondary cylinder 16, a main piston 17, a secondary piston 18, a firing pin 19, a power mechanism, The needle tube assembly 20, the locking mechanism 21, etc., the main air cylinder 15, the auxiliary cylinder 16, the main piston 17, the auxiliary piston 18, the firing needle 19, the needle tube assembly 20, the locking mechanism 21, etc. can all be of existing conventional structures. The cylinder 15 is fixed above the secondary cylinder 16, the main cylinder 15 communicates with the rear end of the secondary cylinder 16, the primary piston 17 and the secondary piston 18 are respectively arranged in the primary cylinder 15 and the secondary cylinder 16, and the needle tube assembly 20 can pass through the adapter plate, etc. The structural member is fixed on the front end of the main cylinder 15, one end of the firing pin 19 is movably arranged in the needle tube assembly 20, and the other end is fixedly connected with the main piston 17, the firing pin 19 is evenly provided with a plurality of toggle teeth 22, and the locking mechanism 21 The firing pin 19 can be locked or unlocked by the toggle teeth 22 , which can use a trigger-type locking mechanism 21 , and the power mechanism can control the actions of the firing pin 19 and the secondary piston 18 . The key improvement point of the present invention lies in the power mechanism, as shown in Figures 1-3, the power mechanism includes a motor 1, a reducer, a one-way clutch (not shown in the figure), a transmission shaft 4, and The toggle tooth 22 toggles the firing pin toggle assembly 6 of the firing pin 19 and the piston control assembly 5 for connecting with the auxiliary piston 18, the motor 1, the speed reducer, the one-way clutch, the transmission shaft 4, the firing pin toggle assembly 6 Connected in sequence, the firing pin toggle assembly 6 is disposed on one side of the firing pin 19 for controlling the action of the firing pin 19 through the toggle teeth 22 . The piston control assembly 5 can be installed under the main cylinder 15 and the front end of the auxiliary cylinder 16 through a structural member. When the motor 1 rotates forward, the motor 1 simultaneously controls the action of the striker toggle assembly 6 and the piston control assembly 5, thereby causing the striker 19, the main piston 17 and the auxiliary piston 18 to move simultaneously. When the motor 1 is reversed, the motor 1 only controls the piston control assembly 5 to act, and only the secondary piston 18 acts at this time.

It should be noted that the reducer includes a first reducer 2 and a second reducer 3 connected in sequence, and the motor 1 is connected to the one-way clutch through the first reducer 2 and the second reducer 3 in sequence, and preferably the one-way clutch is wrapped in the second reducer 3 . Of course, as required, a third speed reducer may also be provided at the rear end of the one-way clutch. The piston control assembly 5 is connected between the first reducer 2 and the second reducer 3 through a bevel gear 11. The number of bevel gears 11 is two, and one bevel gear 11 is fixed between the first reducer 2 and the second reducer. On the transmission shaft 4 between 3, another bevel gear 11 is fixed on the piston control assembly 5. In this way, when the motor 1 rotates, the rotary motion can be converted into linear motion through the piston control assembly 5 , and then the secondary piston 18 can be controlled to reciprocate linearly in the secondary cylinder 16 .

The structure of the piston control assembly 5 is shown in FIG. 3 , which includes a ball screw 12 , a screw bearing seat 13 and a screw shaft sleeve 14 , and the screw bearing seat 13 can be fixed under the front end of the main cylinder 15 through structural parts And the front end of the auxiliary cylinder 16, the screw shaft sleeve 14 can be connected to the auxiliary piston 18 through the piston rod, one end of the ball screw 12 is connected to the motor 1 after passing through the screw shaft bearing seat 13, and the other end is connected to the screw shaft sleeve 14. . In this way, when the motor 1 rotates, the ball screw 12 can drive the screw shaft sleeve 14 and the auxiliary piston 18 to move.

As shown in Figure 4, the firing pin toggle assembly 6 includes an upper rotating wheel 7, a lower rotating wheel 8, a central shaft 9 and a plurality of shifting columns 10 for controlling the action of the firing needle 19, and the central shaft 9 is fixed On the transmission shaft 4, the upper rotating wheel 7 and the lower rotating wheel 8 are respectively fixed on both ends of the central shaft 9, and a plurality of toggle columns 10 are evenly fixed on the upper rotating wheel 7 and the lower rotating wheel 8 in an arc-shaped arrangement and the arc length of the toggle column 10 after being fixed in an arc shape is greater than or equal to the arc length of the other side between the upper rotating wheel 7 and the lower rotating wheel 8 . After the firing pin toggle assembly 6 is arranged on one side of the firing pin 19 through the transmission shaft 4, the upper rotating wheel 7 and the lower rotating wheel 8 are located above and below the firing pin 19, respectively. The moving column 10 controls the action of the firing pin 19 .

The implementation principle of the present utility model is as follows:

First press the needle tube hard to make the needle tube move to the right end under force, and then control the motor 1 to rotate forward. Under the action, the control firing pin 19 and the piston control assembly 5 act simultaneously. Wherein, under the driving action of the toggle column 10 in the striker toggle assembly 6 to the toggle teeth 22, the striker 19 moves toward the rear end of the master cylinder 15 and drives the master piston 17 to move toward the rear end. The ball screw 12 in the piston control assembly 5 converts the rotary motion of the motor 1 into linear motion, and drives the secondary piston 18 to move toward the front end. Entering the sub-cylinder 16, the pressure of the gas in the main cylinder 15 is reduced. When the firing pin 19 and the main piston 17 move to the set position, the firing pin 19 is locked by the locking mechanism 21

Then control the motor 1 to reverse. At this time, the motor 1 only controls the action of the piston control assembly 5. The piston control assembly 5 will control the auxiliary piston 18 to move to the rear end to reset the auxiliary piston 18. During the resetting process of the auxiliary piston 18, the auxiliary cylinder 16 The gas inside enters the main cylinder 15, and the gas pressure in the main cylinder 15 increases, so as to realize the pressurized energy storage of the nail fastener. When the energy is stored to the set value, the firing pin 19 is unlocked by the locking mechanism 21. At the moment when the firing pin 19 is unlocked, the firing pin 19 is unlocked. 19 obtains instantaneous high-speed kinetic energy and moves toward the needle tube, so as to instantly shoot out the nails pre-set in the needle tube.

It should be noted that when the firing pin toggle assembly 6 starts to rotate until each toggle column 10 completes one toggle, the side of the striker toggle assembly 6 without the toggle column 10 is just located on the toggle tooth 22 At this time, the locking mechanism 21 just locks the firing pin 19 through the first toggle tooth 22 to prevent the firing pin 19 from moving to the front end. When the firing pin toggle assembly 6 rotates again until the toggle column 10 starts to toggle the firing pin 19, the locking mechanism 21 will continue to lock the firing pin 19 through the subsequent toggle teeth 22 until the firing pin 19 moves to the rear end predetermined position . Since only one side of the striker toggle assembly 6 is provided with the toggle post 10, when the striker 19 moves to the predetermined position at the rear end, the side not provided with the toggle post 10 is just located on the side of the toggle tooth 22, At this time, the firing pin 19 is unlocked without blocking the firing pin 19, which not only ensures the stable action of the firing pin 19, but also ensures the effective firing of the nail.

In the above process, the utility model adopts the power mechanism of the above-mentioned specific structure. By adjusting the rotational speed of the motor 1, the dynamic adjustment of the power of the nail fastener can be realized, and the compression stroke of the auxiliary piston 18 can be compensated for the high pressure gas in the cylinder. Therefore, the technical problems existing in the prior art are effectively solved.

The above descriptions are only specific embodiments of the present invention, and any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all the disclosed features, or All steps in a method or process, except mutually exclusive features and/or steps, may be combined in any way.

Claims (6)

1. A power mechanism for a double-cylinder nail fastener, characterized in that it comprises a motor (1), a reducer, a one-way clutch, a transmission shaft (4), a firing pin toggle assembly (6) and a piston control assembly ( 5), the motor (1), the reducer, the one-way clutch, the transmission shaft (4), and the firing pin toggle assembly (6) are connected in sequence, and the piston control assembly (5) is connected between the reducer and the one-way clutch. between; when the motor (1) rotates forward, the motor (1) controls the action of the striker toggle assembly (6) and the piston control assembly (5) at the same time; when the motor (1) is reversed, the motor (1) controls the piston Control component (5) action. 2 . The power mechanism for a double-cylinder nail fastener according to claim 1 , wherein the firing pin toggle assembly ( 6 ) comprises an upper turning wheel ( 7 ), a lower turning wheel ( 8 ), 2 . The central shaft (9) and a plurality of toggle columns (10) for controlling the action of the firing pin (19), the central shaft (9) is fixed on the transmission shaft (4), the upper turning wheel (7) and the lower turning wheel ( 8) They are respectively fixed on both ends of the central shaft (9), and a plurality of toggle columns (10) are evenly fixed on one side between the upper rotating wheel (7) and the lower rotating wheel (8) in an arc-shaped arrangement. . 3. A power mechanism for a double-cylinder nail fastener according to claim 2, characterized in that: the arc length of the toggle column (10) after being fixed in an arc shape is greater than or equal to the upper rotating wheel (7) ) and the arc length on the other side between the lower turning wheel (8). 4. A power mechanism for a double-cylinder nail fastener according to claim 1, characterized in that: the reducer comprises a first reducer (2) and a second reducer (3) connected in sequence, and the piston The control assembly (5) is connected between the first reducer (2) and the second reducer (3). 5 . The power mechanism for a double-cylinder nail fastener according to claim 1 , wherein the piston control assembly ( 5 ) is connected between the reducer and the one-way clutch through a bevel gear ( 11 ). 6 . 6. The power mechanism for a dual-cylinder nail fastener according to any one of claims 1-5, wherein the piston control assembly (5) comprises a ball screw (12), a screw bearing The seat (13) and the screw sleeve (14) for fixed connection with the piston, one end of the ball screw (12) passes through the screw bearing seat (13) and is connected with the motor (1), and the other end is connected with the screw The bushing (14) is connected.

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