CN114750111B - Double-cylinder electric nail fixer - Google Patents

Abstract

The invention discloses a double-cylinder electric nail fixer, which comprises a main cylinder, an auxiliary cylinder, a linear motion mechanism, a firing pin, a needle tube assembly, a driving mechanism and a limiting and releasing mechanism, wherein the main cylinder is fixedly connected with the auxiliary cylinder, and the inner cavities of the main cylinder and the auxiliary cylinder are communicated; a main piston and an auxiliary piston are respectively arranged in the main cylinder and the auxiliary cylinder, the needle tube assembly is fixedly connected with the main cylinder through a connecting piece, one end of the firing pin is movably arranged in the needle tube assembly, and the other end of the firing pin is fixedly connected with the main piston; the limiting and releasing mechanism for limiting or releasing the firing pin is arranged beside the firing pin, the linear motion mechanism is fixedly connected with the auxiliary piston, and the driving mechanism is respectively connected with the firing pin and the linear motion mechanism. The invention can realize the compression of high-pressure gas in the cylinder under the condition of small bearing, and can automatically compensate the micro-leakage amount of the gas in the cylinder and automatically adjust the nailing power by adjusting the stroke of the driving mechanism.

Description

A double-cylinder electric nail fixer

technical field

The invention belongs to the field of fastening technology, and in particular relates to a double-cylinder electric nail fixer.

Background technique

Existing electro-pneumatic nail fixers are mainly divided into single-cylinder and double-cylinder structures. For the single-cylinder nailer, it mainly realizes the nailing action by presetting high-pressure gas with different energies in the cylinder, but the single-cylinder nailer has the following technical problems in practical application:

First, the single-cylinder nailer uses gear transmission to compress high-pressure gas, and the transmission system has a large load and is prone to failure, so that the single-cylinder nailer has not been able to break through the bottleneck of high-power nailer. Its two, each parameter of single-cylinder nail fixing device is fixed, does not have the function of regulating nailing power. Third, the single-cylinder nailer cannot automatically compensate for the micro-leakage of gas in the cylinder. When gas leakage affects the nailing power, other equipment must be used to replenish the cylinder, thereby affecting the construction progress of the fastening operation.

For the double-cylinder nail setter, it has a more complex transmission system and cylinder body structure, and it is more and more widely used in various industries because it can solve some of the above technical problems existing in the single-cylinder nail setter .

At this stage, the main representative technologies involving double-cylinder nail fixers are:

For example, the document with the publication number CN205685265U discloses a pneumatic fastener driver, which includes a first cylinder and a second cylinder located in the housing and connected to the working chamber, the nailing piston of the first cylinder The extension end is fixedly connected with a striker, and the striking end of the striker extends to the front end of the nail box on one side of the housing; the end of the shell away from the nail box extends out of the handle, and the rear end of the first cylinder body and the striker The nail piston fixes the magnetic part and the magnetic suction part respectively; the second cylinder body is located between the first cylinder body and the grip handle, and an air pressure piston driven by a reciprocating mechanism is installed inside. Since the two cylinders of this driver are independent of each other, the aerodynamic performance is improved, and even if the nails are driven continuously at a high speed, there will be no empty strike. But in practical application, this technology still has the following technical problems:

1. The nail fixer adopts a crank rocker structure for gas compression and energy storage, which makes it difficult to achieve higher pressure gas compression.

2. The reset and limit of the piston in the nail fixer is accomplished by the magnetic force of the magnetic parts. When high-power nailing needs to be achieved, the requirements for magnetic force are also increased accordingly, which makes how to achieve large magnetic force with small magnetic parts become the subject of this question. One of the technical problems that nail fixer realizes high power nail shooting.

3. The nailer is equipped with a small cylinder in addition to the double cylinders. By using the screw mechanism to drive the adjustable valve plug to change the size of the air chamber cavity, the purpose of adjusting the nailing power is achieved. However, due to the small volume of the small tank itself, the power adjustable range is small. In addition, this adjustment action is not precisely controlled by the control system, making the power adjustment inaccurate.

4. The nail fixer still does not solve the problem of accurate automatic compensation after the gas micro-leakage in the cylinder body.

Another example is that the publication number CN211940767U discloses a kind of electric nailing gun. This technology is provided with a blocking structure on one side of the hammer. When a certain pressure is accumulated in the second cylinder and the thrust of the pressure on the rivet is greater than the resistance of the blocking structure, the rivet breaks through the blocking structure and instantly accelerates to knock out the nail, and the output pressure is increased by accumulating momentum, thereby increasing the performance of the electric nail gun. output impact. But in practical application, this technology still has the following technical problems:

The nail fixer adopts a crank rocker structure for gas compression energy storage, and adopts a unilateral blocking structure to realize the purpose of limiting the position of the piston rod. But this kind of energy storage mode and the position-limiting mode of piston are all unsuitable for high pressure situation. When the pressure in the cylinder is high, it is difficult for the crank rocker to realize energy storage. However, only one steel ball in the unilateral blocking structure will be difficult to achieve the limit of the firing pin, and the limiting ability of the unilateral blocking structure to the firing pin depends on the spring performance, the shape of the steel ball and the coefficient of friction. During use, these The parameters will change, which will also make the limit ability of the unilateral blocking structure unstable, and then the nailing effect will be unstable.

For the above reasons, it is necessary to further improve the double cylinder nail fixer.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned technical problems in the prior art, and provide a double-cylinder electric nail fixer. The present invention can realize the compression of high-pressure gas in the cylinder under the condition of a small load through the driving mechanism of a specific structure. , and can automatically compensate the micro-leakage of gas in the cylinder and automatically adjust the gas pressure in the cylinder by adjusting the stroke of the driving mechanism to meet the nailing requirements of different powers.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A double-cylinder electric nail fixing device is characterized in that: it includes a main cylinder, an auxiliary cylinder, a linear motion mechanism, a striker and a driving mechanism, the main cylinder and the auxiliary cylinder are fixedly connected, and the inner chambers of the main cylinder and the auxiliary cylinder communicate; The needle is connected with the main piston in the main cylinder, the linear motion mechanism is connected with the auxiliary piston in the auxiliary cylinder, and the driving mechanism is respectively connected with the firing pin and the linear motion mechanism; when the driving mechanism rotates forward, the driving mechanism controls the firing pin and the linear motion mechanism Action, so that the gas in the main cylinder enters the auxiliary cylinder; when the driving mechanism reverses, the driving mechanism controls the linear motion mechanism to reset the auxiliary piston, and the gas in the auxiliary cylinder enters the main cylinder.

The driving mechanism includes a motor, a first speed reducer, a second speed reducer, a one-way clutch, a transmission shaft, a toggle assembly and a bevel gear, wherein the motor, the first speed reducer, the second speed reducer, the one-way clutch, the transmission The shaft and the toggle assembly are connected in sequence, the toggle assembly is arranged on one side of the firing pin for controlling the action of the firing pin, and the bevel gear is arranged between the first reducer and the second reducer for controlling the action of the linear motion mechanism.

The toggling assembly includes an upper rotating wheel, a lower rotating wheel, a central shaft and a plurality of toggling columns, the central shaft is fixed on the transmission shaft, the upper rotating wheel and the lower rotating wheel are respectively fixed at both ends of the central shaft, and the plurality of dials The moving column is evenly fixed on one side between the upper rotating wheel and the lower rotating wheel in an arc-shaped arrangement; the upper rotating wheel and the lower rotating wheel are respectively located above and below the firing pin, and the toggle assembly controls the firing through the toggle column. Needle action.

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.

A plurality of toggle teeth are evenly arranged on the firing pin, and the driving mechanism controls the action of the firing pin through the toggle teeth.

The firing pin includes a front firing section, a middle control section and a rear piston connecting end fixedly connected in sequence. The front firing section is circular, the middle control section is flat, and the toggle teeth are evenly arranged on both sides of the middle control section.

The double-cylinder electric nail fixer also includes a limit release mechanism installed next to the firing pin through a connecting piece. The limit release mechanism includes an opening and closing type limiter and a control assembly. On the part, the control component is arranged under the connecting part, and the control component realizes the release or limit of the firing pin by controlling the opening or closing of the opening and closing limit part.

The control assembly includes a linkage arm, a lever, a trigger, and a support base fixed under the connecting piece. The support base includes a horizontal base body and a vertical base body perpendicular to the horizontal base body. One end of the linkage arm is connected to the opening and closing type limiter. The other end is connected to the upper end of the lever after passing through the vertical base body, the middle and upper part of the lever is movably connected to the horizontal base body, and the lower end of the lever is fixedly connected to the trigger; the trigger controls the opening and closing of the opening and closing limit part through the lever and the linkage arm .

The opening and closing type limit part includes two limit heads, which are symmetrically arranged on the connecting piece through bearings, and the limit heads are respectively located on both sides of the firing pin; The locking buckle connected with the bit head, the connecting arm controls the opening or closing of the opening and closing type limit part through the locking buckle.

The limiting head includes a concave plate, a limiting column, a limiting rotating shaft and a connecting shaft, one end of the limiting rotating shaft is fixed on the lower part of one side of the concave plate, and the other end is movably installed on the connector through a bearing; the limiting column It is fixed on the other side of the concave plate for limiting or releasing the firing pin. One end of the connecting shaft is fixedly connected with the concave plate, and the other end is movably connected in the lock catch after passing through the connecting piece downward.

The limiting post is a cylindrical structure, and the lock is provided with an oval lock hole, the lower end of the limiting post is located in the locking hole, and the limiting post can move in the locking hole.

The linear motion mechanism includes a ball screw, a screw bearing seat and a screw shaft sleeve, the screw bearing seat is fixed on the front end of the auxiliary cylinder, the screw shaft sleeve is fixedly connected with the auxiliary piston through the piston rod, and one end of the ball screw rod passes through the After passing through the screw bearing seat, it is connected with the driving mechanism, and the other end is connected with the screw shaft sleeve; the driving mechanism controls the movement of the auxiliary piston through the ball screw and the screw shaft sleeve.

The linear motion mechanism also includes a positioning assembly, the positioning assembly includes a positioning block and a positioning ring, the positioning block is symmetrically fixed between the auxiliary cylinder and the screw bearing seat, and a positioning groove is opened along the length direction of the positioning block; the positioning ring is fixed Between the screw bearing seat and the auxiliary cylinder, and on both sides of the positioning ring are respectively provided with positioning bosses extending into the positioning groove.

The positioning block is formed by straightly extending the side walls on both sides of the front end of the auxiliary cylinder toward the screw bearing seat.

A flange is fixed on the screw shaft sleeve and the piston rod, and the screw shaft sleeve and the piston rod are fixed through the flange.

The main cylinder is located directly above the auxiliary cylinder, and the main cylinder communicates with the auxiliary cylinder through an airway backing plate.

The master cylinder includes a cylinder body, a cylinder head, a shock absorbing cushion and a gasket, the gasket is fixed between the cylinder head and the cylinder body, and the shock absorbing cushion is fixed in the cylinder head.

The front end of the main cylinder is fixed with a needle tube assembly through a connecting piece. The needle tube assembly includes a needle tube, a needle tube sleeve, a firing pin guide cover, a firing pin guide seat, a bottom plate and an elastic reset member. The front end of the cover and the rear end of the firing pin guide cover are provided with a fixing plate connected to the connecting piece, the firing pin guide seat is connected to the fixing plate, and the front end of the firing pin guide seat is located in the firing pin guide cover, and the rear end is fixed on the connecting piece Above; there is a firing channel for the movement of the firing pin in the firing pin guide seat, and the bottom plate is installed under the firing channel through the fixing plate; the elastic return parts are respectively symmetrically arranged on both sides of the fixing plate, and the two sides of the needle tube are fixed There are symmetrical needle tube arms, and the needle tubes are respectively connected with the elastic restoring parts through the needle tube arms.

A nail clip is fixed below the base plate, and the base plate is provided with a nail inlet corresponding to the firing channel, and the nails in the nail clip can enter the firing channel through the nail inlet.

Sensors respectively connected to the driving mechanism and the needle tube assembly are fixed on the connecting piece, the sensors are used to detect the displacement/pressure of the needle tube, and control the action of the driving mechanism according to the detected displacement/pressure.

Adopt above-mentioned technical scheme, the beneficial technical effect of the present invention is:

1. The double-cylinder electric nail fixer of the present invention includes a main cylinder, an auxiliary cylinder, a linear motion mechanism, a firing pin and a driving mechanism. Since the driving mechanism is connected with the firing pin and the linear motion mechanism respectively, and when the driving mechanism rotates forward, The driving mechanism can control the action of the firing pin and the linear motion mechanism, so that the main piston and the auxiliary piston move in opposite directions, that is, the main piston moves to the rear and the auxiliary piston moves to the front, and the gas in the main cylinder enters the auxiliary cylinder; when the driving mechanism reverses When rotating, the driving mechanism can control the action of the linear motion mechanism to reset the auxiliary piston and make the gas in the auxiliary cylinder enter the main cylinder. Therefore, on the one hand, by adjusting the stroke of the linear motion mechanism, the pressure in the main cylinder and the auxiliary cylinder can be flexibly adjusted, thereby realizing dynamic adjustment of the power of the nail fixer, the control method is simple and effective, and the accuracy is high. On the other hand, 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 micro-leakage of the high-pressure gas can also be compensated by adjusting the stroke of the linear motion mechanism through the driving mechanism. It makes up for the defect of insufficient power caused by air pressure leakage, and also prolongs the air replenishment period of the nail fixer. On the other hand, the present invention decomposes the firing pin reset and pressurized energy storage into two processes. During the reset process, the pressure in the cylinder is low, the load of the transmission system is small, and the energy-saving screw rotation method is used to compress the gas. Therefore, the present invention reduces the burden on the driving mechanism while increasing the power, making the process of firing pin reset and pressurized energy storage more stable and safe.

In summary, the present invention adopts a labor-saving and space-saving mechanical structure to achieve high-power nailing, while reducing the demand for high-performance drive mechanisms and high-quality mechanical structures, and can also automatically adjust the stroke of the linear motion mechanism to automatically adjust The gas pressure can not only meet the nailing requirements of different powers, but also realize the automatic gas replenishment when the high-pressure gas leaks slightly.

2. The driving mechanism of the present invention includes a motor, a first speed reducer, a second speed reducer, a one-way clutch, a transmission shaft, a toggle assembly and a bevel gear set, and the driving mechanism adopting this structure, when the firing pin moves to the master cylinder, During the movement of the rear end (to the right), the motor rotates forward and provides reset power to the firing pin through the transmission structure, and the auxiliary piston moves to the left under the pressure in the cylinder to provide power for the reset of the firing pin, which can reduce the firing pin Requirements for the motor during reset. Then the motor reverses, and the one-way clutch works, so that the motor is separated from the firing pin; the motor provides power to the auxiliary piston through the linear motion mechanism between the motor and the auxiliary cylinder, so as to realize the gas compression in the cylinder. Since the motor and the auxiliary piston are provided with a linear motion mechanism, the compression and energy storage of the high-pressure gas in the cylinder is effortless, that is, the energy storage method of the nail fixer is simpler and more convenient.

3. The present invention adopts an upper rotating wheel, a lower rotating wheel, a central shaft and a plurality of stirring columns to form a moving assembly, the purpose of which is to increase the contact area between the moving column and the firing pin when the moving column is moved, thereby increasing the driving force. Stability, so that the force is more uniform to ensure a stable firing effect.

4. In the present invention, the arc length of the toggle column after being fixed in an arc shape is set to be greater than or equal to the arc length of the other side between the upper rotating wheel and the lower rotating wheel. On the one hand, it can effectively dial the The firing pin, on the other hand, guarantees the space requirement of the firing pin during firing.

5. The invention realizes the action control of the firing pin through the evenly arranged toggle teeth, which effectively improves the safety during the nail fixing process.

6. The bearing environment of each part of the firing pin in the present invention is different. The front firing end mainly bears the impact load, the middle control section mainly bears the contact stress, and the rear piston connecting end mainly bears the problem of gas pressure and frictional heat generation. The present invention adopts the above-mentioned specific structure of the firing pin. On the one hand, according to the force characteristics of each part, different structural shapes are adopted to make the force more reasonable. On the other hand, it is beneficial to improve the rationality of the layout space, and also has the advantage of being easy to disassemble.

7. The present invention adopts the opening and closing type limiting part and the control assembly to realize the release or limiting of the firing pin, which utilizes a mechanical unlocking firing device, which improves the safety and reliability of the nailer.

8. The present invention utilizes a lever structure in the control assembly, which is beneficial to realize the release of the firing pin more labor-saving.

9. The present invention adopts the symmetrical structure of the limiting head as the opening and closing type limiting part, so that the force on the firing pin is more uniform when limiting, effectively avoiding the destructiveness of the unbalanced load phenomenon to the firing pin, and greatly improving the limit. safety performance.

10. The present invention adopts a position-limiting head with a specific structure, which makes the structure of the nail fixer more compact and improves the release efficiency.

11. The present invention adopts the cylindrical structure of the limit post to cooperate with the oval lock hole. On the one hand, the cylindrical structure of the limit post can move in a small range in the oval lock hole without driving the trigger and other components. On the other hand, it is convenient to realize the automatic limit of the firing pin and the linkage with the trigger to realize the effective release of the firing pin.

12. The present invention adopts ball screw, screw bearing seat and screw bushing as the linear motion mechanism, which can obtain larger axial thrust with smaller torque, so that the power required for high-pressure gas compression is reduced.

13. The present invention can limit the rotational freedom of the lead screw sleeve through the positioning assembly, so that it can only move along the axial direction, thereby ensuring better stability of the movement of the auxiliary piston.

14. In the present invention, the side walls on both sides of the front end of the auxiliary cylinder extend linearly to the direction of the screw bearing seat to form a positioning block structure, which has the advantage of eliminating the axial gap and improving the axial precision.

15. The present invention realizes the fixed connection of the screw shaft sleeve and the piston rod through the flange, which is convenient for installation and disassembly on the one hand, and on the other hand, the flange has high fixing strength and good rigidity, and is suitable for high-pressure occasions.

16. In the present invention, the main cylinder is arranged directly above the auxiliary cylinder. The purpose is that when it is in the nailing state, most of the high-pressure gas is in the main cylinder. When the limit release mechanism releases the firing pin, the high-pressure gas can expand rapidly and The work done by the firing pin is conducive to improving the nailing power.

17. In the present invention, the firing pin is pressed and moves quickly along the nailing direction. After completing the task of hitting the nail, the firing pin still has a certain amount of energy. In order to prevent the firing pin from releasing energy to the shell and causing the shell to be damaged, shock absorption is adopted. Pedestals absorb residual energy while helping to reduce vibration.

18. The present invention adopts a needle tube assembly with a specific structure, on the one hand, it is beneficial to prevent dust and nails, on the other hand, it is also beneficial to the symmetrical and rational arrangement of the structure, and on the other hand, it is also beneficial to prevent the firing pin from damaging the matrix.

19. The present invention is fixed on the nail clip through the bottom plate, on the one hand, it is convenient to realize the continuous firing of the nails, which is beneficial to improve the nailing efficiency;

20. The present invention can convert the displacement/pressure signal into an electrical signal through the displacement/pressure sensor, and the driving mechanism will only start when the displacement/pressure value applied by the user reaches the safety line. It provides a guarantee for the safe firing of the nail fixer, can avoid dangerous firing, and has the advantages of high safety and strong reliability.

Description of drawings

Fig. 1 is a schematic diagram of the front view structure of the present invention.

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

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

Fig. 4 is a schematic diagram of the three-dimensional structure of the toggle assembly in the present invention.

Fig. 5 is a schematic diagram of the three-dimensional structure of the position limiting head in the present invention.

Fig. 6 is a schematic diagram of the firing pin speed of the nail fixer of the present invention at different gears.

Fig. 7 is a schematic diagram of nailing energy of the nail fixer in different gears according to the present invention.

The marks in the figure are: 1. Main cylinder, 2. Auxiliary cylinder, 3. Linear motion mechanism, 4. Firing pin, 5. Needle tube assembly, 6. Driving mechanism, 7. Limit release mechanism, 8. Main piston, 9. Auxiliary piston, 10, connecting piece, 11, toggle tooth, 12, front firing section, 13, middle control section, 14, rear piston connection end, 15, airway backing plate, 16, motor, 17, first reducer , 18, the second reducer, 19, transmission shaft, 20, toggle assembly, 21, bevel gear, 22, upper turning wheel, 23, lower turning wheel, 24, central shaft, 25, toggle column, 26, even Boom, 27, lever, 28, trigger, 29, support seat, 30, lock catch, 31, limit head, 32, concave plate, 33, limit post, 34, limit rotating shaft, 35, connecting shaft, 36, ball screw, 37, screw bearing seat, 38, screw shaft sleeve, 39, positioning block, 40, positioning ring, 41, positioning groove, 42, positioning boss, 43, cylinder block, 44, cylinder cover , 45, shock absorbing seat, 46, washer, 47, needle tube, 48, needle tube cover, 49, firing pin guide cover, 50, firing pin guide seat, 51, bottom plate, 52, elastic reset member, 53, needle tube arm, 54, nail clamp, 55, sensor, 56, fixed plate.

Detailed ways

Example 1

As a basic embodiment of the present invention, the present invention discloses a double-cylinder electric nailer, as shown in Figure 1-3, the nailer includes a main cylinder 1, an auxiliary cylinder 2, a linear motion mechanism 3, and a firing pin 4 , needle tube assembly 5, drive mechanism 6 and limit release mechanism 7. Taking the direction shown in the figure as an example, set the left end of the main cylinder 1 and the left end of the auxiliary cylinder 2 as the front end, and the right end of the main cylinder 1 and the right end of the auxiliary cylinder 2 as the rear end. Among them, the structure, position and connection relationship of each component are as follows:

The main cylinder 1 is fixedly connected with the auxiliary cylinder 2 , and preferably the fixed main cylinder 1 is located directly above the auxiliary cylinder 2 . The main cylinder 1 and the auxiliary cylinder 2 are respectively provided with a main piston 8 and an auxiliary piston 9. The main cylinder 1 and the auxiliary cylinder 2 communicate with each other through the airway backing plate 15 fixed at the rear end. By controlling the main piston 8 and the auxiliary piston 9 in the main The positions in the cylinder 1 and the auxiliary cylinder 2 can control the flow of gas in the main cylinder 1 and the auxiliary cylinder 2 . Airway backing plate 15 inside is provided with sealing passage, and the quantity of airway backing plate 15 can be one or two, can be fixed on the rear end of main cylinder 1 and the rear end of secondary cylinder 2 by bolts, so that the main cylinder 1 The inner chamber communicates with the inner chamber of the auxiliary cylinder 2. Of course, the use of the airway backing plate 15 on the one hand not only helps to make the inner cavity of the main cylinder 1 communicate with the inner cavity of the auxiliary cylinder 2, but also improves the stability of the connection between the main cylinder 1 and the auxiliary cylinder 2, but in this embodiment It is not limited to the use of the airway backing plate 15, and other structural components such as pipes can also be directly used for communication as required. In addition, in this embodiment, it is preferred that the length of the main cylinder 1 is greater than that of the auxiliary cylinder 2, but the volumes of the two can be set accordingly according to the actual situation.

The needle tube assembly 5 is fixedly connected with the main cylinder 1 through the connector 10 , and the fixed needle tube assembly 5 is located at the front end of the main cylinder 1 . The connecting piece 10 is preferably a plate-like structure, on which several through holes are opened as required, so as to be fixedly connected with other components or allow other components to pass through. One end of the firing pin 4 is movably arranged in the needle tube assembly 5 , and the other end is connected with the main piston 8 . The limit release mechanism 7 is arranged beside the firing pin 4, and is used to limit or release the striker 4. The limit release mechanism 7 is equivalent to the safety structure of the nailer, and the strike pin 4 can be realized by the limit release mechanism 7. When the firing pin 4 is limited, the pressurized energy storage of the nail setter can be realized, and when the firing pin 4 is released, the firing of the nail setter can be realized.

The linear motion mechanism 3 is connected with the auxiliary piston 9 for controlling the position of the auxiliary piston 9 in the auxiliary cylinder 2 . The driving mechanism 6 is respectively connected with the firing pin 4 and the linear motion mechanism 3, and the driving mechanism 6 can respectively control the positions of the main piston 8 and the secondary piston 9 in the respective cylinders 43 through the firing pin 4 and the linear motion mechanism 3, thereby realizing the main cylinder. 1 and the pressure control in the auxiliary cylinder 2. In addition, when the driving mechanism 6 rotates forward, the driving mechanism 6 controls the striker 4 and the linear motion mechanism 3 to act simultaneously; when the driving mechanism 6 reverses, the driving mechanism 6 only controls the linear motion mechanism 3 to act.

In this embodiment, when the stapler is not in use and is in the initial state, the main piston 8 is located at the left end of the main cylinder 1, and the auxiliary piston 9 is located at the right end of the auxiliary cylinder 2. When it is necessary to drive a nail with a nailer, the principle is as follows:

Press the needle tube assembly 5 firmly first, so that the needle tube 47 in the needle tube assembly 5 is forced to move to the right end. Then control the driving mechanism 6 to rotate forward, and the driving mechanism 6 controls the firing pin 4 and the linear motion mechanism 3 to act simultaneously. Wherein, the firing pin 4 moves toward the rear end of the main cylinder 1 under the action of the driving mechanism 6, and at the same time drives the main piston 8 to move toward the rear end. The linear motion mechanism 3 converts the rotary motion of the driving mechanism 6 into a linear motion, and drives the auxiliary piston 9 to move to the front. At this time, the main piston 8 and the auxiliary piston 9 move in opposite directions respectively, that is, the main piston 8 moves to the rear and the auxiliary piston 9 moves to the front. Movement, the gas in the main cylinder 1 enters the auxiliary cylinder 2, and the pressure of the gas in the main cylinder 1 decreases. When the firing pin 4 and the main piston 8 move to the set position, the firing pin 4 is limited by the limit release mechanism 7 . Then the drive mechanism 6 is controlled to reverse. At this time, the drive mechanism 6 only controls the linear motion mechanism 3 to move, and the linear motion mechanism 3 will control the auxiliary piston 9 to move to the rear end, so that the auxiliary piston 9 is reset. During the reset process of the auxiliary piston 9, the auxiliary piston 9 The gas in the cylinder 2 enters the main cylinder 1, and the gas pressure in the main cylinder 1 increases to realize the pressurized energy storage of the nail fixer. When the energy is stored to the set value, releasing the firing pin 4 through the limit release mechanism 7 can cause the firing pin 4 to move toward the needle tube assembly 5 instantaneously at high speed, and the nails pre-set in the needle tube assembly 5 will be fired.

It should be noted that in this embodiment, a plurality of toggle teeth 11 are uniformly arranged on the firing pin 4, and in order to increase the contact area, improve the load capacity and make the stress distribution even, it is preferable that these toggle teeth 11 belong to the trochoid Tooth shape. Wherein, the firing pin 4 includes a front firing section 12 , a middle control section 13 and a rear piston connection end 14 which are fixedly connected in sequence. The middle control section 13 has a flat structure, and a plurality of toggle teeth 11 are evenly arranged on both sides of the middle control section 13 . The rear piston connecting end 14 is adapted to the central installation groove of the main piston 8 for being connected with the main piston 8 . The toggle teeth 11 are evenly arranged on both sides of the middle control section 13 near the end of the front firing section 12, and the number of toggle teeth 11 on each side can be specifically 6-10. The driving mechanism 6 can control the firing pin 4 to move toward the rear end of the master cylinder 1 through the toggle tooth 11 , and the limit release mechanism 7 can realize the limit or release of the firing pin 4 through the toggle tooth 11 .

This embodiment does not limit the specific structures of the linear motion mechanism 3, the needle tube assembly 5, the driving mechanism 6, and the limit release mechanism 7, which can adopt conventional structures known in the prior art, or adopt corresponding structures as required. Customized structure, as long as the structural parts can realize the corresponding function.

Example 2

As a preferred embodiment of the present invention, on the basis of Embodiment 1, this embodiment further improves the master cylinder 1 . As shown in Figures 2-3, the master cylinder 1 includes a cylinder body 43, a cylinder head 44, a shock absorbing pad 45 and a gasket 46, the cylinder head 44 is sealed and fixed on the cylinder body 43 by bolts, and the gasket 46 is surrounded by a The bolt hole, the washer 46 is fixed between the cylinder head 44 and the cylinder body 43 through the bolt and the bolt hole, and the shock-absorbing pad 45 is fixed in the cylinder head 44 to reduce the vibration during the use of the injection gun. Wherein, the cylinder head 44 has a certain internal space. In order to improve the shock absorption effect, the size and shape of the preferred shock absorbing pad 45 are adapted to the internal space of the cylinder head 44, even if the internal space of the cylinder head 44 is completely covered by the shock absorbing pad. Seat 45 filled.

Example 3

As another preferred embodiment of the present invention, on the basis of Embodiment 1, this embodiment further improves the needle tube assembly 5 . As shown in FIGS. 1-3 , the needle tube assembly 5 includes a needle tube 47 , a needle tube cover 48 , a firing pin guide cover 49 , a firing pin guide seat 50 , a bottom plate 51 and an elastic reset member 52 . Wherein, the firing pin guide cover 49 has a semicircular structure, and its rear end is fixed with a fixing plate 56 fixedly connected with the connector 10 , and its bottom surface is a plane, and a groove is opened on the plane. The main body of the firing pin guide seat 50 is a square structure, and its bottom surface is provided with a firing channel for the movement of the firing pin 4. Structure, the front end of the firing pin guide seat 50 is located in the channel of the firing pin guide cover 49, and its middle and rear ends are fixedly connected with the fixing plate 56 and the connecting piece 10 respectively. The needle tube 47 is a cylindrical structure, and two sides of the needle tube 47 are symmetrically fixed with needle tube arms 53 extending toward the rear end. The bottom plate 51 is installed below the firing channel through a fixing plate 56 . The needle tube cover 48 is fixed on the front end of the firing pin guide cover 49 , and the lower part of the needle tube cover 48 can also be fixedly connected with the base plate 51 . The inner diameter of the needle tube cover 48 is larger than the outer diameter of the needle tube 47, the front end of the needle tube cover 48 is provided with a symmetrical gap, and the rear end of the needle tube 47 is movably arranged in the needle tube cover 48, that is, the needle tube 47 is movably arranged in the firing pin guide cover through the needle tube cover 48 49 front end. The elastic reset members 52 are movable respectively arranged on both sides of the fixed plate 56 in a symmetrical manner. The elastic reset members 52 include a reset rod and a reset spring. One end of the reset rod is limited on one side of the fixed plate 56, and the other end passes through the fixed plate. After 56, it is fixedly connected with the needle tube arm 53, and the reset spring is sleeved on the reset rod and is located between the needle tube arm 53 and the fixed plate 56. When the needle tube 47 is controlled to move to the rear end, the notch on the needle tube cover 48 can just accommodate the corresponding needle tube arm 53 and limit the position.

In this embodiment, a nail clip 54 is fixed below the base plate 51 . Wherein, the bottom plate 51 is provided with a nail inlet corresponding to the firing channel, and the nails in the nail clip 54 can enter the firing channel through the nail inlet. Realize efficient firing of nails.

In this embodiment, a sensor 55 connected to the drive mechanism 6 and the needle tube assembly 5 is also fixed on the connector 10. The sensor 55 is used to detect the displacement/pressure of the needle tube 47 in the needle tube assembly 5, and control the pressure according to the detected displacement/pressure. The driving mechanism 6 acts. Specifically, the reset lever (or extend the reset lever) of one set of the elastic reset member 52 can be used to cooperate with the sensor 55 to realize the detection of the displacement/pressure of the needle tube 47 . When pressing the needle tube 47 to move to the rear end, the needle tube arm 53 on the needle tube 47 will drive the reset lever to move towards the sensor 55, and the displacement/pressure of the needle tube 47 can be detected by detecting the position of the reset lever or the pressure generated by the sensor 55, and then Accordingly, the driving mechanism 6 is controlled to act.

Example 4

As yet another preferred embodiment of the present invention, on the basis of Embodiment 1, the driving mechanism 6 is further improved in this embodiment in order to better realize the control of the stapler. As shown in Figures 1-3, the drive mechanism 6 includes a motor 16, a first reducer 17, a second reducer 18, a one-way clutch (not shown in the figure), a transmission shaft 19, a toggle assembly 20 and a cone gear 21. Wherein, the motor 16, the first speed reducer 17, the second speed reducer 18, the one-way clutch, the transmission shaft 19 and the toggle assembly 20 are sequentially connected, and preferably the one-way clutch is wrapped in the second speed reducer 18. Of course, according to needs, a third speed reducer can also be arranged at the rear end of the one-way clutch. The toggle assembly 20 is arranged on one side of the firing pin 4 for controlling the action of the firing pin 4 through the toggle tooth 11, and the bevel gear 21 is arranged between the first reducer 17 and the second reducer 18 for controlling the linear motion mechanism 3 actions. In addition, the drive mechanism 6 can be additionally provided with corresponding structural components and equipped with bearings and the like for fixing.

As shown in Figure 4, described toggle assembly 20 comprises upper turning wheel 22, lower turning wheel 23, central shaft 24 and a plurality of stirring posts 25, and central shaft 24 is fixed on the transmission shaft 19, and upper turning wheel 22 and lower The rotating wheels 23 are respectively fixed on the two ends of the central shaft 24, and a plurality of stirring columns 25 are uniformly fixed on one side between the upper rotating wheel 22 and the lower rotating wheel 23 in an arc-shaped arrangement, and the stirring columns 25 are in the shape of The arc length after the arc is fixed is greater than or equal to the arc length on the other side between the upper rotating wheel 22 and the lower rotating wheel 23 . After the toggle assembly 20 is set on one side of the firing pin 4 through the transmission shaft 19, the upper rotating wheel 22 and the lower rotating wheel 23 are respectively located above and below the firing pin 4, and at this time the toggle assembly 20 is controlled by the toggle column 25 Action of firing pin 4.

What needs to be explained in this embodiment is that the number of the toggling columns 25 in the toggling assembly 20 is preferably four, and the arc length of the four toggling columns 25 is slightly larger than that of the one without the toggling columns 25 after they are arranged in an arc shape. The length of the arc on the other side. The size and spacing of the toggling posts 25 are compatible with the toggling teeth 11, and it is better to stir one toggling tooth 11 with each toggling post 25 at a time. In actual application, when the toggle assembly 20 starts to rotate until each toggle column 25 completes a toggle, the side of the toggle assembly 20 that is not provided with the toggle column 25 is just located on the side of the toggle tooth 11. The time limit release mechanism 7 just passes through the first toggle tooth 11 to limit the firing pin 4, preventing the firing pin 4 from moving to the front end. When the toggle assembly 20 rotates again until the toggle column 25 starts to toggle the firing pin 4, the limit release mechanism 7 will limit the firing pin 4 through the subsequent toggle tooth 11. In this embodiment, the toggle assembly 20 is preferably rotated twice. The firing pin 4 can be controlled to move to a preset position at the rear end through the toggle tooth 11 . Since only one side of the toggle assembly 20 is provided with the toggle column 25, after the toggle assembly 20 is rotated twice, the side where the toggle column 25 is not provided is just positioned at the side of the toggle tooth 11. At this time, the control limit When the position release mechanism 7 releases the firing pin 4, the firing pin 4 can move toward the front end at a high speed instantaneously, that is, the toggle assembly 20 adopts the aforementioned specific structure and will not block the firing pin 4, thereby facilitating the stable action of the firing pin 4.

Of course, the toggle assembly 20 with the above-mentioned structure is the preferred structure of this embodiment, but it is not limited to the above-mentioned preferred structure. In practical applications, a gear with a similar structure can also be used to cooperate with the toggle tooth 11 to control the action of the firing pin 4. .

Example 5

As yet another preferred embodiment of the present invention, in order to better realize the control of the stapler, on the basis of Embodiment 1, this embodiment further improves the position-limiting release mechanism 7 . As shown in Figures 1-3, the limit release mechanism 7 is installed next to the firing pin through a connecting piece, which includes an opening and closing type limiting part and a control assembly. The opening and closing type limiting part is movably arranged on the connecting part 10 and located Next to the pin 4, it is used to limit or release the firing pin 4 by the toggle tooth 11. The control assembly is arranged under the connecting piece 10 and is connected with the opening-closing type limiting part. The control assembly realizes the release or limiting of the firing pin 4 by controlling the opening or closing of the opening-closing type limiting part.

Described control assembly comprises linking arm 26, lever 27, trigger 28 and the support seat 29 that is fixed below connector 10, and support seat 29 comprises horizontal base body and vertical base body perpendicular to horizontal base body, horizontal base body and vertical base body preferably Formed in one piece, it is roughly an inverted T-shaped structure. The left end of the pedestal body is provided with a hinge groove, and the right end can be fixed on the linear motion mechanism 3 . The upper end of the vertical base body is fixed below the connector 10, and the upper part of the vertical base body is provided with a through hole. One end of the linkage arm 26 is connected with the opening and closing type limiter, and the other end is hinged on the upper end of the lever 27 after passing through the through hole on the vertical base body. The lower end of the lower end is fixedly connected with the trigger 28; the trigger 28 can control the opening or closing of the opening and closing type limit part through the lever 27 and the linkage arm 26. Generally speaking, when the control assembly composed of the above-mentioned structure is in the initial state without external force intervention, the opening and closing type limit part is in the closed state, when the toggle tooth 11 on the firing pin 4 moves to the same position as the driving mechanism 6 under the control of the driving mechanism 6 The position corresponding to the opening and closing limit part will be automatically limited. And when external force intervenes, pulling the trigger 28 by external force just can make the opening-and-closing type limiting part open, and the opening-and-closing type limiting part is disengaged from the toggle tooth 11, and then realizes the release of firing pin 4.

As shown in FIG. 5 , the opening and closing type limiter includes two limiter heads 31 , the two limiter heads 31 are symmetrically arranged on the connector 10 through bearings, and the two limiter heads 31 are respectively located at the ends of the firing pin 4 . Both sides; on the linkage arm 26, there are locks 30 symmetrically hinged for connecting with the limit head 31, and the two locks 30 are roughly umbrella-shaped on the linkage arm 26, and the linkage arm 26 is controlled by the lock 30 The two limit heads 31 can control the opening or closing of the opening and closing type limiter.

Further, the limiting head 31 includes a concave plate 32, a limiting column 33, a limiting rotating shaft 34 and a connecting shaft 35. The concave plate 32 refers to a structural member with a certain concave space, such as a V-shaped piece , U-shaped pieces, curved pieces, etc. One end of the limiting rotating shaft 34 is fixed on the lower part of one side of the concave plate 32, and the other end is movably installed on the connector 10 through a bearing, and the limiting rotating shaft 34 is located below the firing pin 4 after installation. The limit post 33 is fixed in the groove on the other side of the concave plate 32 and is used to cooperate with the toggle tooth 11 to limit or release the firing pin 4 . One end of the connecting shaft 35 is fixedly connected with the concave plate 32 , and the other end is movably connected in the latch 30 after passing through the through hole on the connecting piece 10 downwards. When the limit release mechanism 7 is installed, the firing pin 4 is just located between the concave plates 32 of the two limit heads 31 . When the toggle tooth 11 on the firing pin 4 moves between the concave plates 32 of the two limit heads 31 under the control of the drive mechanism 6 , it will be automatically limited by the limit post 33 .

It should be noted that the limiting column 33 in the present embodiment is a cylindrical structure, and the locking buckle 30 is provided with an oval lock hole, and the aperture of the locking hole is slightly larger than the outer diameter of the limiting column 33. The lower end is located in the lock hole or below the lock hole, and the limit column 33 can move within a small range in the lock hole without driving the trigger 28 and other components to move. Through the oval lock hole, the limit column 33 of cylindrical structure can move in a small range in the oval lock hole without driving the trigger 28 and other components to move, thereby facilitating the movement of the toggle tooth 11 under the control of the drive mechanism 6 It is automatically limited when it reaches the position corresponding to the opening and closing type limiter.

Example 6

As another preferred embodiment of the present invention, on the basis of Embodiment 1, this embodiment further improves the linear motion mechanism 3 . As shown in Figure 3, the linear motion mechanism 3 includes a ball screw 36, a screw bearing seat 37 and a screw shaft sleeve 38, and the screw bearing seat 37 is fixed on the front end of the auxiliary cylinder 2, specifically through the main cylinder 1. The structural parts are fixed in front of the auxiliary cylinder 2. The auxiliary piston 9 is provided with a piston rod for controlling the auxiliary piston 9, and the screw shaft sleeve 38 can be fixedly connected with the auxiliary piston 9 through the piston rod. Wherein, the screw shaft sleeve 38 and the piston rod are fixed with a flange, and the screw shaft sleeve 38 is fixed with the piston rod through the flange. One end of the ball screw 36 passes through the screw bearing housing 37 and is connected with the driving mechanism 6, and the other end is connected with the screw shaft sleeve 38; the driving mechanism 6 controls the movement of the auxiliary piston 9 through the ball screw 36 and the screw shaft sleeve 38.

In order to ensure the stability of the linear motion mechanism 3 controlling the linear motion of the secondary piston 9, the linear motion mechanism 3 in this embodiment also includes a positioning assembly, the positioning assembly includes a positioning block 39 and a positioning ring 40, and the number of positioning blocks 39 can be two Two positioning blocks 39 are symmetrically fixed between the auxiliary cylinder 2 and the screw bearing seat 37, and a positioning groove 41 is opened along the length direction of the positioning blocks 39. Specifically, in order to simplify the structure, the positioning block 39 can be formed by straightly extending the side walls on both sides of the front end of the auxiliary cylinder 2 toward the screw bearing seat 37 . The positioning ring 40 is fixed between the screw bearing seat 37 and the auxiliary cylinder 2 , and positioning bosses 42 extending into the positioning groove 41 are respectively provided on both sides of the positioning ring 40 . When the driving mechanism 6 controls the movement of the auxiliary piston 9 through the ball screw 36, under the limit action of the positioning boss 42 and the positioning groove 41, the auxiliary piston 9 can only move linearly in the auxiliary cylinder 2, thus ensuring the fastening of the nails. device stability.

Example 7

As the most preferred embodiment of the present invention, the present invention discloses a double-cylinder electric nail fixer, as shown in Figure 1-5, which includes a main cylinder 1, an auxiliary cylinder 2, a linear motion mechanism 3, a striker 4, Needle tube assembly 5, driving mechanism 6 and limit release mechanism 7. in,

The main cylinder 1 is fixedly connected with the auxiliary cylinder 2 , and the fixed main cylinder 1 is located directly above the auxiliary cylinder 2 . Main cylinder 1 and auxiliary cylinder 2 are respectively provided with main piston 8 and auxiliary piston 9, and main cylinder 1 and auxiliary cylinder 2 are communicated with the airway backing plate 15 fixed on the rear end, by controlling main piston 8 and auxiliary piston 9 The positions in the main cylinder 1 and the auxiliary cylinder 2 can control the flow of gas in the main cylinder 1 and the auxiliary cylinder 2 .

Further, a washer 46 is fixed between the cylinder head 44 of the master cylinder 1 and the cylinder body 43 by bolts, and a shock absorbing pad 45 is fixed inside the cylinder head 44 of the master cylinder 1 .

The needle tube assembly 5 is fixedly connected to the main cylinder 1 through a connecting piece 10, the connecting piece 10 is preferably a plate-shaped structure, and a number of through holes are opened on it as required, so as to be fixedly connected with other components or allow other components to pass through . The needle tube assembly 5 includes a needle tube 47, a needle tube cover 48, a firing pin guide cover 49, a firing pin guide seat 50, a bottom plate 51 and an elastic reset member 52. The rear end of the guide cover 49 is provided with a fixing plate 56 connected with the connector 10, the firing pin guide seat 50 is connected with the fixing plate 56, and the front end of the firing pin guide seat 50 is located in the firing pin guide cover 49, and the rear end is fixed on the connection. piece 10 on. A firing channel for the movement of the firing pin 4 is provided in the firing pin guide seat 50, the inner diameter of the firing channel matches the inner diameter of the front firing section 12 in the firing pin 4, and is smaller than the outer diameter of the middle control section 13, so that Limit the firing pin 4 when firing. The base plate 51 is installed below the firing channel through the fixing plate 56. A nail clip 54 is fixed below the base plate 51. A nail inlet corresponding to the firing channel is provided on the base plate 51. The nails in the nail clip 54 can enter the firing through the nail inlet. aisle. The elastic reset members 52 are symmetrically arranged on both sides of the fixed plate 56 respectively. Symmetrical needle tube arms 53 are fixed on both sides of the needle tube 47 , and the needle tube 47 is respectively connected to the elastic reset members 52 through the needle tube arms 53 . The elastic reset member 52 includes a reset rod and a reset spring. One end of the reset rod is limited on one side of the fixed plate 56, and the other end passes through the fixed plate 56 and is fixedly connected with the needle tube arm 53. The reset spring is sleeved on the reset rod and positioned at between the needle tube arm 53 and the fixing plate 56 .

Further, the connector 10 is fixed with a sensor 55 respectively connected to the driving mechanism 6 and the needle tube assembly 5, the sensor 55 is used to detect the displacement/pressure of the needle tube 47, and controls the action of the driving mechanism 6 according to the detected displacement/pressure . Specifically, the reset lever (or extend the reset lever) of one set of the elastic reset member 52 can be used to cooperate with the sensor 55 to detect the displacement/pressure of the needle tube 47 . When pressing the needle tube 47 to move to the rear end, the needle tube arm 53 on the needle tube 47 will drive the reset lever to move towards the sensor 55, and the displacement/pressure of the needle tube 47 can be detected by detecting the position of the reset lever or the pressure generated by the sensor 55, and then Accordingly, the driving mechanism 6 is controlled to act.

One end of the firing pin 4 is movably arranged in the needle tube assembly 5 , and the other end is connected with the main piston 8 after passing through the shock absorbing pad 45 . The firing pin 4 includes a front firing section 12, a middle control section 13 and a rear piston connection end 14 which are fixedly connected in sequence. The front firing section 12 is circular, and the middle control section 13 is a flat structure. The width of the middle control section 13 is larger than that of the front firing section. The diameter of the section 12 is evenly provided with a plurality of toggle teeth 11 on both sides of the middle control section 13 . Preferably, the toggle teeth 11 are evenly arranged on both sides of the middle control section 13 near the end of the front firing section 12, and the number of toggle teeth 11 on each side can be specifically 6-10.

The limit release mechanism 7 is arranged beside the firing pin 4, and is used to limit or release the firing pin 4 through the toggle tooth 11. Specifically, it includes an opening and closing type limiting part and a control assembly, and the opening and closing type limiting part is movably arranged on the connecting piece 10 for limiting the firing pin 4 through the toggle tooth 11 . The control assembly is arranged under the connecting piece 10 and is connected with the opening-closing type limiting part. The control assembly realizes the release or limiting of the firing pin 4 by controlling the opening or closing of the opening-closing type limiting part.

Further, the control assembly includes a linkage arm 26, a lever 27, a trigger 28, and a support base 29 fixed below the connector 10. The support base 29 includes a horizontal base body and a vertical base body perpendicular to the horizontal base body. The linkage arm 26 One end of one end is symmetrically hinged with a lock catch 30, and the other end passes through the vertical seat and is connected to the upper end of the lever 27. The middle and upper part of the lever 27 is movably connected to the horizontal seat, and the lower end of the lever 27 is fixedly connected with the trigger 28. The opening-and-closing limiting portion includes two limiting heads 31 , which are symmetrically arranged on the connecting piece 10 through bearings, and the limiting heads 31 are respectively located on both sides of the firing pin 4 . The limiting head 31 includes a concave plate 32, a limiting column 33, a limiting rotating shaft 34 and a connecting shaft 35. One end of the limiting rotating shaft 34 is fixed on the lower part of one side of the concave plate 32, and the other end is movably installed on the connector through a bearing. 10; the limit column 33 is fixed on the other side of the concave plate 32 for limiting or releasing the firing pin 4, one end of the connecting shaft 35 is fixedly connected with the concave plate 32, and the other end passes through the connector 10 downwards It is movably connected in the lock buckle 30, wherein the limit post 33 is a cylindrical structure, the lock buckle 30 is provided with an oval lock hole, the lower end of the limit post 33 is located in the lock hole, and the limit post 33 can be Move in the keyhole. When it needs to be released, pull the trigger 28, the trigger 28 will control the linkage arm 26 to move to the left through the lever 27, and then the linkage arm 26 will drive the concave plate 32 to open to the outside of the firing pin 4 through the lock catch 30 and the connecting shaft 35 , and then make the limit column 33 disengage from the toggle tooth 11 to realize the release of the firing pin 4 . And in the process of energy storage, since the limit post 33 can move in a small range in the oval lock hole without driving the trigger 28 and other components to move, it is also convenient to realize the automatic limit of the firing pin 4 .

The linear motion mechanism 3 is connected with the auxiliary piston 9 for controlling the reciprocating linear movement of the auxiliary piston 9 in the auxiliary cylinder 2 . The linear motion mechanism 3 includes a ball screw 36, a screw bearing seat 37, a screw shaft sleeve 38 and a positioning assembly. The screw bearing seat 37 is fixed on the front end of the auxiliary cylinder 2, and the screw bearing seat 37 is also fixed by a structural member. In the lower part of the front end of the master cylinder 1. The auxiliary piston 9 is fixedly provided with a piston rod for controlling the auxiliary piston 9, and a flange is fixed on the screw shaft sleeve 38 and the piston rod, and the screw shaft sleeve 38 and the piston rod are fixed by the flange. One end of the ball screw 36 passes through the screw bearing housing 37 and is connected with the driving mechanism 6 , and the other end is connected with the screw shaft sleeve 38 . The positioning assembly includes a positioning block 39 and a positioning ring 40. The positioning block 39 is symmetrically fixed between the auxiliary cylinder 2 and the screw bearing seat 37, and a positioning groove 41 is provided along the length direction of the positioning block 39. Specifically, the positioning block 39 can be provided by the auxiliary cylinder 2. The side walls on both sides of the front end of the cylinder 2 are formed by extending straight to the direction of the screw bearing seat 37 . The positioning ring 40 is fixed between the screw bearing seat 37 and the auxiliary cylinder 2 , and positioning bosses 42 extending into the positioning groove 41 are respectively provided on both sides of the positioning ring 40 .

The driving mechanism 6 is respectively connected with the firing pin 4 and the linear motion mechanism 3; the driving mechanism 6 includes a motor 16, a first speed reducer 17, a second speed reducer 18, a one-way clutch, a transmission shaft 19, a toggle assembly 20 and a cone Gear 21, wherein, the motor 16, the first reducer 17, the second reducer 18, the one-way clutch, the transmission shaft 19 and the toggle assembly 20 are sequentially connected through the rotating shaft, and the toggle assembly 20 is arranged on one side of the firing pin 4 And can mesh with the toggle tooth 11, when the motor 16 rotates, the toggle assembly 20 can control the firing pin 4 to move to the rear end through the toggle tooth 11. The bevel gear 21 is arranged between the first speed reducer 17 and the second speed reducer 18 and with the ball screw 36 in the linear motion mechanism 3 , the ball screw 36 can be controlled to rotate by the bevel gear 21 when the motor 16 rotates. When the driving mechanism 6 rotates forward, the driving mechanism 6 controls the firing pin 4 and the linear motion mechanism 3 to act simultaneously, so that the main piston 8 and the auxiliary piston 9 move in opposite directions respectively, that is, the main piston 8 moves to the rear end and the auxiliary piston 9 moves to the front end, And the gas in the main cylinder 1 enters the auxiliary cylinder 2; when the driving mechanism 6 reverses, the driving mechanism 6 only controls the linear motion mechanism 3 to reset the auxiliary piston 9, and the gas in the auxiliary cylinder 2 enters the main cylinder 1 . Wherein, in order to facilitate the effective control of the firing pin 4 , in this embodiment, an arc-shaped avoidance gap is provided on the side of the firing pin guide seat 50 to facilitate the installation of the toggle assembly 20 on one side of the firing pin 4 . In addition, in order to improve the stability of the driving mechanism 6, the rotating shaft in the driving mechanism 6 can also be connected with other components through bearings and/or structural components.

Further, the toggle assembly 20 includes an upper turning wheel 22, a lower turning wheel 23, a central shaft 24 and a plurality of toggle posts 25, the central shaft 24 is fixed on the transmission shaft 19, and the upper turning wheel 22 and the lower turning wheel 23 They are respectively fixed at both ends of the central shaft 24, and a plurality of toggle columns 25 are evenly fixed on one side between the upper rotating wheel 22 and the lower rotating wheel 23 in an arc-shaped arrangement, and the toggle columns 25 are fixed in an arc shape. The arc length of the back is greater than or equal to the arc length of the other side between the upper rotating wheel 22 and the lower rotating wheel 23. After the toggle assembly 20 is set on one side of the firing pin 4 through the transmission shaft 19, the upper rotating wheel 22 and the lower rotating wheel 23 are respectively located above and below the firing pin 4, and at this time the toggle assembly 20 is controlled by the toggle column 25 Action of firing pin 4.

When setting the stapler in the initial state when not in use, the main piston 8 is located at the left end of the main cylinder 1, and the auxiliary piston 9 is located at the right end of the auxiliary cylinder 2. Then when it is necessary to use the nailer to strike the nail, its implementation principle is as follows:

First press the needle tube 47 hard to make the needle tube 47 move to the right end under force, then control the motor 16 to rotate forward, and cooperate with the motor 16, the first reducer 17, the second reducer 18, the one-way clutch, the transmission shaft 19 and the toggle assembly 20 Under the action, the firing pin 4 and the linear motion mechanism 3 are controlled to act simultaneously. Wherein, under the driving effect of the toggle column 25 in the toggle assembly 20 on the toggle tooth 11, the striker 4 moves toward the rear end of the master cylinder 1 and drives the master piston 8 to move toward the rear end. The ball screw 36 in the linear motion mechanism 3 converts the rotational motion of the motor 16 into a linear motion, driving the auxiliary piston 9 to move to the front end. Entering the auxiliary cylinder 2, the pressure of the gas in the main cylinder 1 decreases. When the striker 4 and the main piston 8 move to the set position, the limit post 33 in the limit release mechanism 7 limits the striker 4 through the toggle tooth 11 .

Control motor 16 counter-rotating again, now motor 16 only controls linear motion mechanism 3 actions, and linear motion mechanism 3 will control auxiliary piston 9 to move to the rear end, auxiliary piston 9 is reset, and in auxiliary piston 9 reset process, auxiliary cylinder 2 The gas inside enters the main cylinder 1, and the gas pressure in the main cylinder 1 increases to realize the pressurized energy storage of the nail fixer. When the energy is stored to the set value, the trigger 28 is pulled to open the limit head 31. At the moment when the limit column 33 is separated from the toggle tooth 11, the firing pin 4 is released, and the high-pressure gas in the main cylinder 1 Under the pushing action, the firing pin 4 obtains instantaneous high-speed kinetic energy and moves toward the needle tube 47 , thereby instantly driving out the nails preset in the needle tube 47 .

In the above process, it should be noted that when the toggle assembly 20 starts to rotate until each toggle column 25 completes a toggle, the side of the toggle assembly 20 that is not provided with the toggle column 25 is just located at the side of the toggle tooth. 11, at this time, the two limit heads 31 in the limit release mechanism 7 just pass through the first toggle tooth 11 to limit the firing pin 4, preventing the firing pin 4 from moving to the front end. When the toggle assembly 20 turns again until the toggle column 25 starts to toggle the firing pin 4, the two limit heads 31 in the limit release mechanism 7 will continue to limit the firing pin 4 through the subsequent toggle teeth 11 until the firing pin 4 Move to the predetermined position of the rear end. Since only one side of the toggle assembly 20 is provided with the toggle column 25, when the striker 4 moves to the predetermined rear end position, the side on which the toggle column 25 is not provided is just positioned at the side of the toggle tooth 11. Controlling the opening of the two limit heads 31 to release the firing pin 4 without blocking the firing pin 4 not only ensures the stable movement of the firing pin 4, but also ensures the effective firing of the nail.

Finally, the applicant also tested the nail fixer described in this embodiment, as follows:

The dynamic numerical simulation of this type of nail fixer is carried out by constructing a virtual prototype model.

Boundary conditions: the first reducer 17 and the second reducer 18 are both planetary reducers, both of which are fixed by the outer ring gear, the sun gear rotates against the ground, the planetary gear rotates and revolves; between the gears, the toggle assembly 20 and the firing pin Set contacts between 4, and refer to the mechanical design manual for contact parameter settings. Set the preset air pressure in the initial state of nailing in the cylinder 43 to 0.8MPa. When the striker 4 is reset, adjust the movement stroke of the auxiliary piston 9 to make the air pressure in the cylinder 43 reach the pressure required for different nailing powers. value to realize the precise adjustment of the power. Therefore, in the simulation test, according to the nailing air pressure, the nail setter is set to 5 gears: 0.93MPa, 1.04MPa, 1.18MPa, 1.36MPa, 1.6MPa. The driving stroke of striker 4 is set to 80mm.

Analysis method: According to the state equation of the gas, first calculate the change curve of the pressure in the cylinder 43 after the limit release mechanism 7 releases the firing pin 4, and then apply it to the end face of the main piston 8, simulate the nailing process, and calculate the firing pin 4 The moving speed driven by the gas pressure in the cylinder 43 is combined with the mass of the piston to solve the kinetic energy of the firing pin 4.

The results obtained are shown in Table 1 below and Figures 6 and 7.

The simulation results show that: as shown in Figure 6, the firing pin 4 has different flying speeds during the switching process of the five gears, and the speed range is: 29.73m/s~38.98m/s; Figure 7 is the nailing energy diagram under different gears , nailing energy range: 88.39J~151.93J. It can be seen that the present invention can not only realize the effective adjustment of power, but also ensure good stability while maintaining high power.

The above is only a specific embodiment of the present invention. Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalents or alternative features with similar purposes; all features disclosed, or all The steps of a method or process may be combined in any way, except for mutually exclusive features and/or steps.

Claims (13)

1. The utility model provides an electronic solid nail ware of double-cylinder which characterized in that: the device comprises a main cylinder (1), an auxiliary cylinder (2), a linear motion mechanism (3), a firing pin (4) and a driving mechanism (6), wherein the main cylinder (1) is fixedly connected with the auxiliary cylinder (2), and the inner cavities of the main cylinder (1) and the auxiliary cylinder (2) are communicated; the firing pin (4) is connected with a main piston (8) in the main cylinder (1), the linear motion mechanism (3) is connected with an auxiliary piston (9) in the auxiliary cylinder (2), and the driving mechanism (6) is respectively connected with the firing pin (4) and the linear motion mechanism (3); when the driving mechanism (6) rotates forwards, the driving mechanism (6) controls the action of the firing pin (4) and the linear motion mechanism (3) to enable the gas in the main cylinder (1) to enter the auxiliary cylinder (2); when the driving mechanism (6) rotates reversely, the driving mechanism (6) controls the linear motion mechanism (3) to act, so that the auxiliary piston (9) is reset, and the gas in the auxiliary cylinder (2) enters the main cylinder (1).

2. The double-cylinder electric nail fixer according to claim 1, characterized in that: the driving mechanism (6) comprises a motor (16), a first speed reducer (17), a second speed reducer (18), a one-way clutch, a transmission shaft (19), a shifting assembly (20) and a bevel gear (21), wherein the motor (16), the first speed reducer (17), the second speed reducer (18), the one-way clutch, the transmission shaft (19) and the shifting assembly (20) are sequentially connected, the shifting assembly (20) is arranged on one side of the striker (4) and used for controlling the action of the striker (4), and the bevel gear (21) is arranged between the first speed reducer (17) and the second speed reducer (18) and used for controlling the action of the linear motion mechanism (3).

3. The double-cylinder electric nail fixer according to claim 2, characterized in that: the poking assembly (20) comprises an upper poking wheel (22), a lower poking wheel (23), a central shaft (24) and a plurality of poking columns (25), wherein the central shaft (24) is fixed on the transmission shaft (19), the upper poking wheel (22) and the lower poking wheel (23) are respectively fixed at two ends of the central shaft (24), and the plurality of poking columns (25) are uniformly fixed on one side between the upper poking wheel (22) and the lower poking wheel (23) in an arc-shaped arrangement mode; the upper rotating wheel (22) and the lower rotating wheel (23) are respectively positioned above and below the firing pin (4), and the toggle assembly (20) controls the action of the firing pin (4) through the toggle column (25).

4. The double-cylinder electric nail fixer according to claim 3, wherein: the arc length of the toggle column (25) after being fixed in an arc shape is larger than or equal to the arc length of the other side between the upper rotating wheel (22) and the lower rotating wheel (23).

5. The double-cylinder electric nail fixer according to any one of claims 1-4, wherein: the firing pin limiting and releasing device is characterized by further comprising a limiting and releasing mechanism (7) arranged beside the firing pin (4) through a connecting piece (10), wherein the limiting and releasing mechanism (7) comprises an opening-closing limiting part and a control assembly, the opening-closing limiting part is movably arranged on the connecting piece (10), the control assembly is arranged below the connecting piece (10), and the control assembly controls the opening-closing limiting part to be opened or closed to release or limit the firing pin (4).

6. The double-cylinder electric nail fixer according to claim 5, wherein: the control assembly comprises a linkage arm (26), a lever (27), a trigger (28) and a support seat (29) fixed below the connecting piece (10), the support seat (29) comprises a transverse seat body and a vertical seat body perpendicular to the transverse seat body, one end of the linkage arm (26) is connected with an opening-closing limiting part, the other end of the linkage arm penetrates through the vertical seat body and then is connected to the upper end of the lever (27), the middle upper part of the lever (27) is movably connected to the transverse seat body, and the lower end of the lever (27) is fixedly connected with the trigger (28); the trigger (28) controls the opening and closing type limiting part to open or close through the lever (27) and the linkage arm (26).

7. The double-cylinder electric nail fixer according to claim 6, characterized in that: the opening and closing type limiting part comprises two limiting heads (31), the two limiting heads (31) are symmetrically arranged on the connecting piece (10) through bearings, and the limiting heads (31) are respectively positioned on two sides of the firing pin (4); the linkage arm (26) is symmetrically hinged with a lock catch (30) used for being connected with the limiting head (31), and the linkage arm (26) controls the opening and closing type limiting part to open or close through the lock catch (30).

8. The double-cylinder electric nail fixer according to claim 7, characterized in that: the limiting head (31) comprises a concave plate (32), a limiting column (33), a limiting rotating shaft (34) and a connecting shaft (35), one end of the limiting rotating shaft (34) is fixed at the lower part of one side of the concave plate (32), and the other end of the limiting rotating shaft is movably arranged on the connecting piece (10) through a bearing; the limiting column (33) is fixed on the other side of the concave plate (32) and used for limiting or releasing the striker (4), one end of the connecting shaft (35) is fixedly connected with the concave plate (32), and the other end of the connecting shaft penetrates through the connecting piece (10) downwards and then is movably connected into the lock catch (30).

9. The double-cylinder electric nail fixer according to claim 8, wherein: spacing post (33) are cylindrical structure, are equipped with oval-shaped lockhole on hasp (30), and the lower extreme of spacing post (33) is located the lockhole, and spacing post (33) can remove in the lockhole.

10. A dual cylinder electric nailer according to any one of claims 1-4 wherein: the linear motion mechanism (3) comprises a ball screw (36), a screw shaft bearing seat (37) and a screw shaft sleeve (38), the screw shaft bearing seat (37) is fixed at the front end of the auxiliary cylinder (2), the screw shaft sleeve (38) is fixedly connected with the auxiliary piston (9) through a piston rod, one end of the ball screw (36) penetrates through the screw shaft bearing seat (37) and then is connected with the driving mechanism (6), and the other end of the ball screw is connected with the screw shaft sleeve (38); the driving mechanism (6) controls the auxiliary piston (9) to move through the ball screw (36) and the screw shaft sleeve (38).

11. The double-cylinder electric nail fixer according to claim 1, characterized in that: the main cylinder (1) comprises a cylinder body (43), a cylinder cover (44), a shock pad seat (45) and a gasket (46), wherein the gasket (46) is fixed between the cylinder cover (44) and the cylinder body (43), and the shock pad seat (45) is fixed in the cylinder cover (44).

12. The double-cylinder electric nail fixer according to claim 1, wherein: a needle tube assembly (5) is fixed at the front end of the master cylinder (1) through a connecting piece (10), the needle tube assembly (5) comprises a needle tube (47), a needle tube sleeve (48), a firing pin guide cover (49), a firing pin guide seat (50), a bottom plate (51) and an elastic resetting piece (52), the needle tube (47) is movably arranged at the front end of the firing pin guide cover (49) through the needle tube sleeve (48), a fixing plate (56) connected with the connecting piece (10) is arranged at the rear end of the firing pin guide cover (49), the firing pin guide seat (50) is connected with the fixing plate (56), the front end of the firing pin guide seat (50) is positioned in the firing pin guide cover (49), and the rear end of the firing pin guide seat (50) is fixed on the connecting piece (10); a firing channel for the firing pin (4) to move is arranged in the firing pin guide seat (50), and a bottom plate (51) is arranged below the firing channel through a fixing plate (56); the elastic reset pieces (52) are movably arranged on two sides of the fixing plate (56) in a symmetrical mode respectively, two symmetrical needle tube arms (53) are fixed on two sides of the needle tube (47), and the needle tube (47) is connected with the elastic reset pieces (52) through the needle tube arms (53) respectively.

13. The dual-cylinder electric nail fixer according to claim 12, wherein: and a sensor (55) which is respectively connected with the driving mechanism (6) and the needle tube assembly (5) is fixed on the connecting piece (10), and the sensor (55) is used for detecting the displacement/pressure of the needle tube (47) and controlling the driving mechanism (6) to act according to the detected displacement/pressure.

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