CN114750111A

CN114750111A - Double-cylinder electric nail fixing device

Info

Publication number: CN114750111A
Application number: CN202210427880.5A
Authority: CN
Inventors: 文华斌; 李彪; 陶静; 刘杰; 何平; 杨余; 李正东
Original assignee: Sichuan Puyu Electromechanical Co ltd; Sichuan Yibin Nanxi Vocational And Technical School; Sichuan University of Science and Engineering
Current assignee: Sichuan Puyu Electromechanical Co ltd; Sichuan Yibin Nanxi Vocational And Technical School; Sichuan University of Science and Engineering
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-07-15
Anticipated expiration: 2042-04-22
Also published as: CN114750111B

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 state 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

Double-cylinder electric nail fixing device

Technical Field

The invention belongs to the technical field of fastening, and particularly relates to a double-cylinder electric nail fixer.

Background

The existing electro-pneumatic nail fixing device mainly comprises a single cylinder and a double-cylinder structure. For a single-cylinder nail fixer, the nail fixing action is realized mainly by presetting high-pressure gas with different energy in a cylinder, but the single-cylinder nail fixer has the following technical problems in practical application:

Firstly, the single-cylinder nail fixing device adopts a gear transmission mode to compress high-pressure gas, and a transmission system has large bearing capacity and is easy to lose efficacy, so that the single-cylinder nail fixing device can not break through the bottleneck of high-strength nail fixing. Secondly, each parameter of the single-cylinder nail fixing device is fixed, and the function of adjusting the power of the nailing is not provided. Thirdly, the single-cylinder nail fixing device cannot automatically compensate the micro leakage amount of gas in the cylinder, and the gas leakage influences the nailing power, and other equipment is needed to supplement gas in the cylinder, so that the construction progress of fastening operation is influenced.

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

At present, the main representative technologies related to the double-cylinder nail fixing device are as follows:

in the publication CN205685265U, a pneumatic fastener driver is disclosed, which comprises a first cylinder and a second cylinder located in a housing and communicating with a working chamber, wherein a striker is fixedly connected to an extending end of a nailing piston of the first cylinder, and a striking end of the striker extends to a front end of a magazine on one side of the housing; a holding handle extends from one end of the shell far away from the nail box, and the rear end of the first cylinder body and the nailing piston are respectively fixed with a magnetic part and a magnetic part; the second cylinder body is positioned between the first cylinder body and the holding handle, and a pneumatic piston driven by a reciprocating mechanism is arranged in the second cylinder body. Since the two cylinders are independent of each other, the pneumatic power performance of the driver is improved, and the driver does not have idle driving even if the driver continuously nails at a high speed. However, in practical application, the technology still has the following technical problems:

1. The nail fixing device adopts a crank rocker structure to perform gas compression energy storage, so that the difficulty of realizing gas compression of higher pressure is high.

2. The resetting and the limiting of the piston in the nail fixer are completed through the magnetic force of the magnetic part, when high-power nailing is required to be realized, the requirement on the magnetic force is correspondingly improved, and therefore, how to realize large magnetic force by the small magnetic part becomes one of the technical problems of realizing high-power nail shooting by the nail fixer.

3. The nail fixing device is additionally provided with a small cylinder outside the double cylinders, and the purpose of adjusting nailing power is achieved by driving the adjustable valve plug to change the size of the cavity of the air chamber by means of the screwing spiral mechanism. But the small cylinder has small volume, so that the power adjustable range is smaller. 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 micro-leakage of gas in the cylinder body.

Also, for example, the document CN211940767U discloses an electric nailing gun, in which a blocking structure is provided at one side of a nail, when a piston of a first cylinder moves, since the nail is blocked, a second cylinder first accumulates pressure, and when a certain pressure is accumulated in the second cylinder and the thrust of the pressure to the nail is greater than the resistance of the blocking structure, the nail breaks through the blocking structure to eject the nail at an instant, so as to increase the output pressure by accumulating, thereby increasing the output impact force of the electric nailing gun. However, in practical application, the technology still has the following technical problems:

The nail fixing device adopts a crank rocker structure to perform gas compression energy storage, and adopts a unilateral blocking structure to realize the limiting purpose of the piston rod. But the energy storage mode and the limiting mode of the piston are not suitable for the condition of high air pressure. When the pressure in the cylinder body is large, the difficulty that the crank rocker needs to realize energy storage is large. The limit of the unilateral blocking structure to the firing pin is difficult to realize only by one steel ball, and the limit capacity of the unilateral blocking structure to the firing pin depends on the performance of the spring, the appearance of the steel ball and the friction coefficient.

For the foregoing reasons, there is a need for further improvements in dual cylinder tackers.

Disclosure of Invention

The invention aims to overcome the technical problems in the prior art and provides a double-cylinder electric nail fixer, which can realize the compression of high-pressure gas in a cylinder under the condition of small bearing capacity by a driving mechanism with a specific structure, and can automatically compensate the micro-leakage amount of the gas in the cylinder and automatically adjust the gas pressure in the cylinder by adjusting the stroke of the driving mechanism so as to meet the nailing requirements of different powers.

In order to realize the purpose, the technical scheme adopted by the invention is as follows:

the utility model provides an electronic solid nail ware of double cylinder which characterized in that: the linear motion mechanism comprises a main cylinder, an auxiliary cylinder, a linear motion mechanism, a firing pin and a driving mechanism, wherein the main cylinder is fixedly connected with the auxiliary cylinder, and the main cylinder is communicated with the inner cavity of the auxiliary cylinder; the firing pin is connected with a main piston in the main cylinder, the linear motion mechanism is connected with an 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 forwards, the driving mechanism controls the action of the firing pin and the linear motion mechanism, so that the gas in the main cylinder enters the auxiliary cylinder; when the driving mechanism rotates reversely, the driving mechanism controls the linear motion mechanism to act, so that the auxiliary piston is reset, and gas in the auxiliary cylinder enters the main cylinder.

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

The poking assembly comprises an upper poking wheel, a lower poking wheel, a central shaft and a plurality of poking columns, the central shaft is fixed on the transmission shaft, the upper poking wheel and the lower poking wheel are respectively fixed at two ends of the central shaft, and the poking columns are uniformly fixed on one side between the upper poking wheel and the lower poking wheel in an arc-shaped arrangement mode; the upper rotating driving wheel and the lower rotating driving wheel are respectively located above and below the firing pin, and the striking assembly controls the action of the firing pin through the striking column.

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

A plurality of poking teeth are uniformly arranged on the firing pin, and the driving mechanism controls the firing pin to act through the poking teeth.

The firing pin comprises a front firing section, a middle control section and a rear piston connecting end which are sequentially and fixedly connected, the front firing section is circular, the middle control section is of a flat structure, and the striking teeth are uniformly arranged on two sides of the middle control section.

The double-cylinder electric nail fixing device further comprises a limiting release mechanism arranged beside the firing pin through a connecting piece, the limiting release mechanism comprises an opening-closing limiting part and a control assembly, the opening-closing limiting part is movably arranged on the connecting piece, the control assembly is arranged below the connecting piece, and the control assembly is used for opening or closing the opening-closing limiting part through controlling to realize the release or the limitation of the firing pin.

The control assembly comprises a linkage arm, a lever, a trigger and a supporting seat fixed below the connecting piece, the supporting seat comprises a transverse seat body and a vertical seat body perpendicular to the transverse seat body, one end of the linkage arm is connected with the opening-closing type 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, the middle upper part of the lever is movably connected to the transverse seat body, and the lower end of the lever is fixedly connected with the trigger; the trigger controls the opening and closing type limiting part to open or close through the lever and the linkage arm.

The opening and closing type limiting part comprises two limiting heads, the two limiting heads are symmetrically arranged on the connecting piece through bearings, and the limiting heads are respectively positioned on two sides of the firing pin; the linkage arm is symmetrically hinged with a lock catch used for being connected with the limiting head, and the linkage arm controls the opening and closing type limiting part to open or close through the lock catch.

The limiting head comprises a concave plate, a limiting column, a limiting rotating shaft and a connecting shaft, one end of the limiting rotating shaft is fixed at the lower part of one side of the concave plate, and the other end of the limiting rotating shaft is movably arranged on the connecting piece through a bearing; the limiting column is fixed on the other side of the concave plate and used for limiting or releasing the striker, one end of the connecting shaft is fixedly connected with the concave plate, and the other end of the connecting shaft is movably connected in the lock catch after penetrating through the connecting piece downwards.

The limiting column is of a cylindrical structure, an oval lock hole is formed in the lock catch, the lower end of the limiting column is located in the lock hole, and the limiting column can move in the lock hole.

The linear motion mechanism comprises a ball screw, a screw bearing seat and a screw shaft sleeve, the screw shaft bearing seat is fixed at the front end of the auxiliary cylinder, the screw shaft sleeve is fixedly connected with the auxiliary piston through a piston rod, one end of the ball screw penetrates through the screw shaft bearing seat and then is connected with the driving mechanism, and the other end of the ball screw is connected with the screw shaft sleeve; the driving mechanism controls the auxiliary piston to move through the ball screw and the screw shaft sleeve.

The linear motion mechanism further comprises a positioning assembly, the positioning assembly comprises a positioning block and a positioning ring, the positioning block is symmetrically fixed between the auxiliary cylinder and the lead screw bearing seat, and a positioning groove is formed in the length direction of the positioning block; the positioning ring is fixed between the screw rod bearing seat and the auxiliary cylinder, and positioning bosses extending into the positioning grooves are respectively arranged on two sides of the positioning ring.

The positioning block is formed by linearly extending the side walls on the two sides of the front end of the auxiliary cylinder towards the direction of the screw rod bearing seat.

The screw rod shaft sleeve and the piston rod are fixed with flange plates, and the screw rod shaft sleeve and the piston rod are fixed through the flange plates.

The main cylinder is positioned right above the auxiliary cylinder and is communicated with the auxiliary cylinder through an air passage base plate.

The master cylinder comprises a cylinder body, a cylinder cover, a shock pad seat and a gasket, wherein the gasket is fixed between the cylinder cover and the cylinder body, and the shock pad seat is fixed in the cylinder cover.

The front end of the main cylinder is fixed with a needle tube assembly through a connecting piece, the needle tube assembly comprises a needle tube, a needle tube sleeve, a firing pin guide cover, a firing pin guide seat, a bottom plate and an elastic resetting piece, the needle tube is movably arranged at the front end of the firing pin guide cover through the needle tube sleeve, the rear end of the firing pin guide cover is provided with a fixing plate connected with the connecting piece, the firing pin guide seat is connected with the fixing plate, the front end of the firing pin guide seat is positioned in the firing pin guide cover, and the rear end of the firing pin guide seat is fixed on the connecting piece; a firing channel for the firing pin to move is arranged in the firing pin guide seat, and the bottom plate is arranged below the firing channel through a fixing plate; the elastic reset pieces are movably arranged on two sides of the fixing plate in a symmetrical mode respectively, two sides of the needle tube are fixed with symmetrical needle tube arms, and the needle tube is connected with the elastic reset pieces through the needle tube arms respectively.

The nail clamp is fixed below the bottom plate, a nail inlet corresponding to the percussion channel is formed in the bottom plate, and nails in the nail clamp can enter the percussion channel through the nail inlet.

And the connecting piece is fixedly provided with a sensor which is respectively connected with the driving mechanism and the needle tube assembly, and the sensor is used for detecting the displacement/pressure of the needle tube and controlling the driving mechanism to act according to the detected displacement/pressure.

By adopting the technical scheme, the invention has the beneficial technical effects that:

1. the double-cylinder electric nail fixing device comprises a main cylinder, an auxiliary cylinder, a linear motion mechanism, a firing pin and a driving mechanism, wherein the driving mechanism is respectively connected with the firing pin and the linear motion mechanism, and when the driving mechanism rotates forwards, the driving mechanism can control the firing pin and the linear motion mechanism to act, so that a main piston and an auxiliary piston respectively move oppositely, namely the main piston moves towards the rear end and the auxiliary piston moves towards the front end, and gas in the main cylinder enters the auxiliary cylinder; when the driving mechanism rotates reversely, the driving mechanism can control the linear motion mechanism to act, so that the auxiliary piston is reset, and gas in the auxiliary cylinder enters the main cylinder. Therefore, on one hand, the pressure in the main cylinder and the auxiliary cylinder can be flexibly adjusted by adjusting the stroke of the linear motion mechanism, so that the power dynamic adjustment of the nail fixing device is realized, the regulation and control mode 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, the gas can be inevitably leaked, and if the gas pressure in the cylinder is leaked, the micro leakage amount of the high-pressure gas can be compensated by adjusting the stroke of the linear motion mechanism through the driving mechanism, so that the defect of insufficient power caused by gas pressure leakage is overcome, and the gas supplementing period of the nail fixing device is prolonged. On the other hand, the invention divides the reset and the pressurization energy storage of the firing pin into two processes, the pressure in the cylinder is low in the reset process, the bearing of the transmission system is small, and the gas compression is carried out in a labor-saving lead screw rotating mode in the energy storage process. Therefore, the invention reduces the burden of the driving mechanism while improving the power, and leads the processes of the firing pin resetting and the pressurization energy storage to be more stable and safer.

In summary, the invention adopts a mechanical structure which is labor-saving and space-saving to realize high-power nailing, reduces the requirements on a high-performance driving mechanism and a high-quality mechanical structure, and can automatically adjust the gas pressure in the cylinder by adjusting the stroke of the linear motion mechanism, thereby not only meeting the nailing requirements of different powers, but also realizing automatic gas supply when high-pressure gas leaks slightly.

2. The driving mechanism comprises a motor, a first speed reducer, a second speed reducer, a one-way clutch, a transmission shaft, a shifting assembly and a bevel gear set. Then the motor rotates reversely, and the one-way clutch works to separate the motor from the firing pin; the motor provides power for the auxiliary piston through a linear motion mechanism between the motor and the auxiliary cylinder, and the compression of gas in the cylinder is realized. Because the linear motion mechanism is arranged between the motor and the auxiliary piston, the compression energy storage of high-pressure gas in the cylinder is not laborious, namely, the energy storage mode of the nail fixer is simpler and more convenient.

3. The invention adopts the upper rotating wheel, the lower rotating wheel, the central shaft and the plurality of shifting columns to form the shifting assembly, and aims to increase the contact area between the shifting columns and the firing pins when the shifting columns are shifted, further increase the stability of shifting, enable the stress to be more uniform and ensure the stable triggering effect.

4. According to the invention, the arc length of the toggle column after being fixed in an arc shape is set to be more than or equal to the arc length of the other side between the upper rotating wheel and the lower rotating wheel, so that on one hand, the firing pin can be effectively toggled in the energy storage process, and on the other hand, the space requirement of the firing pin in the firing process is ensured.

5. The action control of the firing pin is realized through the uniformly arranged striking teeth, and the safety in the nail fixing process is effectively improved.

6. The firing pin has different bearing environments of all parts, the front firing end mainly bears impact load, the middle control section mainly bears contact stress, and the rear piston connecting end mainly bears gas pressure and the problem of heat generation due to friction. The firing pin with the specific structure is adopted, and on one hand, different structural shapes are adopted according to the stress characteristics of all parts, so that the stress of the firing pin is more reasonable. On the other hand, the reasonability of the layout space is improved, and the device also has the advantage of convenience in disassembly.

7. The invention adopts the opening and closing type limiting part and the control component to realize the release or the limiting of the firing pin, and utilizes the mechanical unlocking and firing device to improve the safety and the reliability of the nail fixer.

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

9. The invention adopts the limiting heads with symmetrical structures as the opening-closing limiting parts, so that the striker is stressed more uniformly during limiting, the damage of an unbalance loading phenomenon to the striker is effectively avoided, and the limiting safety performance is greatly improved.

10. The invention adopts the limiting head with a specific structure, so that the structure of the nail fixer is more compact, and the release efficiency is improved.

11. The invention adopts the matching of the limit column with the cylindrical structure and the elliptical lock hole, on one hand, the limit column with the cylindrical structure can move in the elliptical lock hole in a small range without driving a trigger and other components to move, on the other hand, the automatic limit of the firing pin and the effective release of the firing pin by the linkage of the trigger are convenient to realize.

12. The invention adopts the ball screw, the screw bearing seat and the screw shaft sleeve as the linear motion mechanism, can obtain larger axial thrust with smaller torque, and reduces the power required by high-pressure gas compression.

13. The positioning assembly can limit the rotational freedom degree of the lead screw shaft sleeve, so that the lead screw shaft sleeve can only move along the axial direction, and the stability of the motion of the auxiliary piston is better.

14. The positioning block structure is formed by linearly extending the side walls on the two sides of the front end of the auxiliary cylinder towards the direction of the screw rod bearing seat, and has the advantages of eliminating axial clearance and improving axial precision.

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

16. The main cylinder is arranged right above the auxiliary cylinder, and the high-pressure gas is mostly in the main cylinder when in a nailing state, and can be quickly expanded to apply work to the firing pin when the firing pin is released by the limiting and releasing mechanism, so that the nailing power is favorably improved.

17. According to the invention, the firing pin is pressed to move rapidly along the nailing direction, and after the nail striking task is finished, the firing pin still has certain energy, so that in order to avoid the situation that the shell is damaged due to the fact that the firing pin releases the energy to the shell, the shock pad seat is adopted to absorb the residual energy, and meanwhile, the shock absorption pad seat is beneficial to reducing the vibration.

18. The needle tube assembly with the specific structure is adopted, so that the dustproof and nail-clamping-prevention needle tube assembly is beneficial to dustproof and nail-clamping prevention on one hand, is beneficial to symmetrical and reasonable arrangement of the structure on the other hand, and is beneficial to preventing a firing pin from damaging a matrix on the other hand.

19. The nail clamp is fixed on the nail clamp through the bottom plate, so that on one hand, continuous percussion of the nail is convenient to realize, and the nailing efficiency is improved, on the other hand, a reasonable acceleration stroke can be reserved for the nail, and the tail end speed of the nail is increased.

20. The invention can convert displacement/pressure signals into electric signals through the displacement/pressure sensor, and the driving mechanism can be started only when the displacement/pressure value applied by a user reaches a safety line. The safety percussion for the nail fixer provides guarantee, can avoid dangerous percussion, has the advantage that the security is high, the reliability is strong.

Drawings

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

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

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

Fig. 4 is a schematic perspective view of the toggle assembly of the present invention.

Fig. 5 is a schematic perspective view of a limiting head according to the present invention.

FIG. 6 is a schematic view of the striker velocity of the nail clipper of the present invention at different gears.

FIG. 7 is a schematic view of the nailing energy of the nail fixing device of the present invention at different gears.

Labeled in the figure as: 1. the device comprises a main cylinder, a secondary cylinder, a main cylinder, a linear motion mechanism, a secondary cylinder, a connecting piece, a linear motion mechanism, a driving pin, a needle tube assembly, a driving mechanism, a limiting release mechanism, 8, a main piston, 9, a secondary piston, 10, a connecting piece, 11, a toggle tooth, 12, a front trigger section, 13, a middle control section, 14, a rear piston connecting end, 15, an air channel cushion plate, 16, a motor, 17, a first speed reducer, 18, a second speed reducer, 19, a transmission shaft, 20, a toggle assembly, 21, a bevel gear, 22, an upper rotating wheel, 23, a lower rotating wheel, 24, a central shaft, 25, a toggle column, 26, a linkage arm, 27, a lever, 28, a trigger, 29, a supporting seat, 30, a lock catch, 31, a limiting head, 32, a concave plate, 33, a limiting column, 34, a limiting rotating shaft, 35, a connecting shaft, 36, a ball screw rod, 37, a screw rod shaft bearing seat, 38, a screw shaft sleeve, 39, a positioning block, 40, a positioning block, a driving mechanism, 7, a limiting mechanism, a driving mechanism, a driving, The device comprises a positioning ring, 41, a positioning groove, 42, a positioning boss, 43, a cylinder body, 44, a cylinder cover, 45, a shock pad seat, 46, a gasket, 47, a needle tube, 48, a needle tube sleeve, 49, a firing pin guide cover, 50, a firing pin guide seat, 51, a bottom plate, 52, an elastic reset piece, 53, a needle tube arm, 54, a nail clamp, 55, a sensor, 56 and a fixing plate.

Detailed Description

Example 1

As a basic embodiment of the invention, the invention discloses a double-cylinder electric nail fixer, which comprises a main cylinder 1, an auxiliary cylinder 2, a linear motion mechanism 3, a striker 4, a needle tube assembly 5, a driving mechanism 6 and a limit release mechanism 7, as shown in figures 1-3. Taking the direction shown as an example, the left end of the master cylinder 1 and the left end of the slave cylinder 2 are both the front ends, and the right end of the master cylinder 1 and the right end of the slave cylinder 2 are both the rear ends. The structure, the position and the connection relation of each component are respectively as follows:

the main cylinder 1 is fixedly connected with the auxiliary cylinder 2, and the fixed main cylinder 1 is preferably positioned right above the auxiliary cylinder 2. The main cylinder 1 and the sub cylinder 2 are respectively provided with a main piston 8 and a sub piston 9, the main cylinder 1 and the sub cylinder 2 are communicated through an air passage cushion plate 15 fixed at the rear end, and the flow of air in the main cylinder 1 and the sub cylinder 2 can be controlled by controlling the positions of the main piston 8 and the sub piston 9 in the main cylinder 1 and the sub cylinder 2. The air flue base plate 15 is internally provided with a sealing channel, the number of the air flue base plate 15 can be one or two, and the air flue base plate can be fixed at the rear end of the main cylinder 1 and the rear end of the auxiliary cylinder 2 through bolts, so that the inner cavity of the main cylinder 1 is communicated with the inner cavity of the auxiliary cylinder 2. Of course, on one hand, the use of the airway cushion plate 15 is not only beneficial to communicating the inner cavity of the main cylinder 1 with the inner cavity of the auxiliary cylinder 2, but also can improve the connection stability between the main cylinder 1 and the auxiliary cylinder 2, but the embodiment is not limited to the use of the airway cushion plate 15, and other structural members such as pipelines can be directly used for communication as required. In addition, in the present embodiment, the length of the master cylinder 1 is preferably greater than that of the slave cylinder 2, but the volumes of the master cylinder and the slave cylinder may be set according to actual conditions.

The needle tube component 5 is fixedly connected with the main cylinder 1 through a connecting piece 10, and the fixed needle tube component 5 is positioned at the front end of the main cylinder 1. The connecting member 10 is preferably a plate-shaped structure, and a plurality of through holes are formed in the plate-shaped structure as required so as to be fixedly connected with other components or allow other components to pass through the connecting member. One end of the firing pin 4 is movably arranged in the needle tube component 5, and the other end is connected with the main piston 8. The limiting release mechanism 7 is arranged beside the firing pin 4 and used for limiting or releasing the firing pin 4, the limiting release mechanism 7 is equivalent to a safety structure of the nail fixing device, the limiting and releasing of the firing pin 4 can be realized through the limiting release mechanism 7, the pressurization energy storage of the nail fixing device can be realized when the firing pin 4 is limited, and the firing of the nail fixing device can be realized after the firing pin 4 is released.

The linear motion mechanism 3 is connected with the auxiliary piston 9 and used 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 auxiliary piston 9 in the respective cylinder bodies 43 through the firing pin 4 and the linear motion mechanism 3, so as to realize the pressure control in the main cylinder 1 and the auxiliary cylinder 2. When the driving mechanism 6 rotates forward, the driving mechanism 6 controls the striker 4 and the linear motion mechanism 3 to operate simultaneously, and when the driving mechanism 6 rotates backward, the driving mechanism 6 controls only the linear motion mechanism 3 to operate.

In the embodiment, when the nail fixing device is not used and is in an initial state, the main piston 8 is positioned at the left end of the main cylinder 1, and the auxiliary piston 9 is positioned at the right end of the auxiliary cylinder 2. When the nail needs to be fired by using the nail fixer, the principle is as follows:

the needle tube assembly 5 is first pressed hard to force the needle tube 47 in the needle tube assembly 5 to move towards the right end. Then the driving mechanism 6 is controlled to rotate forward, and the driving mechanism 6 controls the firing pin 4 and the linear motion mechanism 3 to operate simultaneously. The firing pin 4 is moved toward the rear end of the master cylinder 1 by the driving mechanism 6, and drives the master piston 8 to move toward the rear end. The linear motion mechanism 3 converts the rotary motion of the driving mechanism 6 into linear motion to drive the auxiliary piston 9 to move towards the front end, at the moment, the main piston 8 and the auxiliary piston 9 respectively move in opposite directions, namely the main piston 8 moves towards the rear end and the auxiliary piston 9 moves towards the front end, the gas in the main cylinder 1 enters the auxiliary cylinder 2, and the pressure of the gas in the main cylinder 1 is reduced. When the firing pin 4 and the main piston 8 are moved to the set position, the firing pin 4 is limited by the limit release mechanism 7. And then the driving mechanism 6 is controlled to reversely rotate, at the moment, the driving mechanism 6 only controls the linear motion mechanism 3 to act, the linear motion mechanism 3 controls the auxiliary piston 9 to move towards the rear end, so that the auxiliary piston 9 is reset, in the resetting process of the auxiliary piston 9, the gas in the auxiliary cylinder 2 enters the main cylinder 1, the gas pressure in the main cylinder 1 is increased, and the pressurization and energy storage of the nail fixer are realized. When the energy is stored to the set value, the firing pin 4 is released through the limiting and releasing mechanism 7, so that the firing pin 4 can generate instantaneous high-speed motion to the needle tube assembly 5, and nails preset in the needle tube assembly 5 are fired.

In the present embodiment, a plurality of the driver teeth 11 are uniformly provided on the striker 4, and in order to increase the contact area, improve the bearing capacity, and make the stress distribution uniform, it is preferable that the driver teeth 11 have a trochoid tooth shape. Wherein, firing pin 4 is including preceding section 12 of striking, well control section 13 and the back piston connection end 14 of fixedly connected in proper order, and preceding section 12 of striking is circular structure, and the activity sets up in needle tubing subassembly 5. The middle control section 13 is of a flat structure, and the plurality of poking teeth 11 are uniformly arranged on two sides of the middle control section 13. The rear piston connection end 14 is adapted to the central mounting groove of the main piston 8 for connection to the main piston 8. The poking teeth 11 are uniformly arranged on two sides of one end of the middle control section 13 close to the front firing section 12, and the number of the poking teeth 11 on each side can be 6-10. The driving mechanism 6 can control the striker 4 to move towards the rear end of the master cylinder 1 through the poking teeth 11, and the limiting and releasing mechanism 7 can limit or release the striker 4 through the poking teeth 11.

In this embodiment, the specific structures of the linear motion mechanism 3, the needle tube assembly 5, the driving mechanism 6, and the limiting and releasing mechanism 7 are not limited, and they may be conventional structures known in the art, or may be customized structures as needed, as long as they can implement corresponding structural components.

Example 2

As a preferred embodiment of the present invention, on the basis of embodiment 1, the present embodiment further improves the master cylinder 1. As shown in fig. 2-3, the master cylinder 1 includes a cylinder body 43, a cylinder head 44, a cushion seat 45 and a gasket 46, the cylinder head 44 is fixed on the cylinder body 43 by bolts, bolt holes are formed around the gasket 46, the gasket 46 is fixed between the cylinder head 44 and the cylinder body 43 by bolts and bolt holes, and the cushion seat 45 is fixed in the cylinder head 44 for reducing vibration during the use of the needle gun. Wherein, the cylinder cap 44 has a certain inner space, and in order to improve the shock absorption effect, the size and shape of the shock pad seat 45 are preferably adapted to the inner space of the cylinder cap 44, even if the inner space of the cylinder cap 44 is completely filled with the shock pad seat 45.

Example 3

As another preferred embodiment of the present invention, on the basis of embodiment 1, this embodiment further improves the needle cannula assembly 5. As shown in fig. 1-3, said needle cannula assembly 5 comprises a needle cannula 47, a cannula hub 48, a firing pin guide cover 49, a firing pin guide block 50, a base plate 51 and a resilient return member 52. Wherein, the firing pin guide cover 49 is a semicircular structure, the rear end thereof is fixedly provided with a fixed plate 56 fixedly connected with the connecting piece 10, the bottom surface thereof is a plane, and the plane is provided with a channel. The firing pin guide holder 50 has a square main body, a firing channel for the firing pin 4 to move is provided on the bottom surface, the front end of the firing pin guide holder is matched with the channel on the firing pin guide cover 49, the rear end and the middle upper part of the firing pin guide holder are respectively provided with a fixing structure, the front end of the firing pin guide holder 50 is positioned in the channel of the firing pin guide cover 49, and the middle and the rear end of the firing pin guide holder are respectively fixedly connected with the fixing plate 56 and the connecting piece 10. The needle tube 47 has a cylindrical structure, and needle tube arms 53 extending rearward are symmetrically fixed to both sides of the needle tube 47. The base plate 51 is mounted below the firing channel by a fixed plate 56. The needle tube sleeve 48 is fixed at the front end of the firing pin guide cover 49, and the lower part of the needle tube sleeve 48 can be fixedly connected with the bottom plate 51. The inner diameter of the needle tube sleeve 48 is larger than the outer diameter of the needle tube 47, the front end of the needle tube sleeve 48 is provided with symmetrical notches, the rear end of the needle tube 47 is movably arranged in the needle tube sleeve 48, namely, the needle tube 47 is movably arranged at the front end of the needle striking guide cover 49 through the needle tube sleeve 48. The elastic reset pieces 52 are respectively and movably arranged on two sides of the fixing plate 56 in a symmetrical mode, each elastic reset piece 52 comprises a reset rod and a reset spring, one end of each reset rod is limited on one side of the fixing plate 56, the other end of each reset rod penetrates through the fixing plate 56 and then is fixedly connected with the needle tube arm 53, and the reset springs are sleeved on the reset rods and located between the needle tube arms 53 and the fixing plates 56. When the control needle 47 is moved towards the rearward end, the notch in the needle hub 48 will just receive and restrain the corresponding needle arm 53.

The present embodiment also has a staple clip 54 secured beneath the base plate 51. Wherein, set up on the bottom plate 51 and advance the nail mouth corresponding with the percussion passageway, the nail accessible in the nail clamp 54 advances the nail mouth and gets into the percussion passageway, and the nail of being convenient for in the nail clamp 54 on the one hand is automatic to be followed closely, and on the other hand also is convenient for realize the high-efficient percussion of nail.

In the present embodiment, the connecting member 10 is further fixed with a sensor 55 connected to the driving mechanism 6 and the syringe assembly 5, respectively, and the sensor 55 is used for detecting the displacement/pressure of the syringe 47 in the syringe assembly 5 and controlling the driving mechanism 6 to operate according to the detected displacement/pressure. Specifically, the reset rod of one set of elastic reset pieces 52 (or extending the reset rod) can be used in combination with the sensor 55 to detect the displacement/pressure of the needle tube 47. When the needle tube 47 is pushed to move toward the rear end, the needle tube arm 53 on the needle tube 47 drives the reset lever to move toward 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 to the sensor 55, thereby controlling the operation of the driving mechanism 6.

Example 4

As still another preferred embodiment of the present invention, in order to better realize the control of the staple holder, the present embodiment further improves the driving mechanism 6 on the basis of embodiment 1. As shown in fig. 1-3, the driving mechanism 6 includes a motor 16, a first reducer 17, a second reducer 18, a one-way clutch (not shown), a transmission shaft 19, a toggle assembly 20, and a bevel gear 21. 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 connected in sequence, and preferably, the one-way clutch is wrapped in the second speed reducer 18. Of course, a third speed reducer may be provided at the rear end of the one-way clutch as needed. A striking assembly 20 is provided at one side of the firing pin 4 for controlling the motion of the firing pin 4 through the striking teeth 11, and a bevel gear 21 is provided between the first decelerator 17 and the second decelerator 18 for controlling the motion of the linear motion mechanism 3. In addition, the driving mechanism 6 may be additionally provided with corresponding structural members and equipped with bearings and the like for fixation.

As shown in fig. 4, the toggle assembly 20 includes an upper rotating wheel 22, a lower rotating wheel 23, a central shaft 24 and a plurality of toggle columns 25, the central shaft 24 is fixed on the transmission shaft 19, the upper rotating wheel 22 and the lower rotating wheel 23 are respectively fixed at two ends of the central shaft 24, the plurality of toggle columns 25 are uniformly fixed at one side between the upper rotating wheel 22 and the lower rotating wheel 23 in an arc-shaped arrangement manner, and the toggle columns 25 are arc-shaped and have a fixed arc length which 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. The toggle assembly 20 is arranged at 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 positioned above and below the firing pin 4, and at this time, the toggle assembly 20 controls the action of the firing pin 4 through the toggle column 25.

In this embodiment, the number of toggle columns 25 in toggle assembly 20 is preferably four, and the arc length of the four toggle columns 25 after being arranged in an arc shape is slightly longer than the arc length of the other side where toggle columns 25 are not arranged. The size and the space of the toggle columns 25 are matched with those of the toggle teeth 11, and each toggle column 25 preferably toggles one toggle tooth 11 at a time. In practical application, when stirring subassembly 20 and beginning to rotate and all accomplish once stirring to every stirring post 25, stir subassembly 20 and go up one side that does not set up stirring post 25 and just be located the side of stirring tooth 11, spacing release mechanism 7 just prevents that striker 4 from removing to the front end through the spacing striker 4 of first stirring tooth 11 this moment. When the striking assembly 20 is rotated again until the striking post 25 starts striking the striking pin 4, the limit releasing mechanism 7 limits the striking pin 4 by the following striking teeth 11, and it is preferable that the striking assembly 20 rotates two turns to control the striking pin 4 to move to the predetermined rear position by the striking teeth 11. Because only one side is provided with in stirring subassembly 20 and stirs post 25, consequently will stir subassembly 20 and rotate two rings back, its one side that does not set up stir post 25 just is located the side of stirring tooth 11, controls spacing release mechanism 7 release firing pin 4 this moment and just can make firing pin 4 produce instantaneous high-speed motion to the front end, stir subassembly 20 promptly and adopt aforementioned specific construction will not cause the blocking to firing pin 4, and then be favorable to firing pin 4's stable action.

Of course, the striking assembly 20 with the above structure is the preferred structure of the present embodiment, but is not limited to the above preferred structure, and in practical applications, a gear with a similar structure may be used to cooperate with the striking teeth 11 to control the action of the striking pin 4.

Example 5

As another preferred embodiment of the present invention, in order to better realize the control of the nail fixing device, on the basis of embodiment 1, the present embodiment further improves the limit release mechanism 7. As shown in fig. 1 to 3, the limit releasing mechanism 7 is mounted beside the firing pin through a connecting member, and includes an opening-closing limit portion and a control component, wherein the opening-closing limit portion is movably disposed on the connecting member 10 and located beside the firing pin 4, and is used for limiting or releasing the firing pin 4 through a poking tooth 11. The control component is arranged below the connecting piece 10 and connected with the opening-closing type limiting part, and the control component realizes the release or the limiting of the firing pin 4 by controlling the opening or the closing of the opening-closing type limiting part.

The control assembly comprises a linkage arm 26, a lever 27, a trigger 28 and a support base 29 fixed below the connecting piece 10, wherein the support base 29 comprises a horizontal base body and a vertical base body perpendicular to the horizontal base body, and the horizontal base body and the vertical base body are preferably integrally formed and have a substantially inverted T-shaped structure. The left end of the transverse seat body is provided with a hinge groove, and the right end of the transverse seat body can be fixed on the linear motion mechanism 3. The upper end of the vertical seat body is fixed below the connecting piece 10, and the upper part of the vertical seat body is provided with a through hole. One end of the linkage arm 26 is connected with the opening-closing type limiting part, the other end of the linkage arm passes through a through hole on the vertical seat body and then is hinged at the upper end of the lever 27, the middle upper part of the lever 27 is movably connected on the horizontal seat body through a hinge groove, and the lower end of the lever 27 is fixedly connected with the trigger 28; the trigger 28 can control the opening and closing of the opening and closing type limiting part through the lever 27 and the linkage arm 26. Generally, in the initial state without external force, the open-close type position-limiting part is in the closed state, and when the poking tooth 11 on the firing pin 4 moves to the position corresponding to the open-close type position-limiting part under the control of the driving mechanism 6, the control component composed of the above structure will be automatically limited. When external force intervenes, the trigger 28 is pulled by the external force to open the opening-closing type limiting part, so that the opening-closing type limiting part is separated from the poking teeth 11, and the firing pin 4 is released.

As shown in fig. 5, the opening-closing type limiting part includes two limiting heads 31, the two limiting heads 31 are symmetrically disposed on the connecting member 10 through bearings, and the two limiting heads 31 are respectively located at two sides of the firing pin 4; the interlocking arm 26 is symmetrically hinged with the latches 30 for connecting with the limiting heads 31, the two latches 30 are roughly in an umbrella-shaped structure on the interlocking arm 26, and the interlocking arm 26 can control the opening and closing type limiting parts to open or close by controlling the two limiting heads 31 through the latches 30.

Further, the limiting head 31 includes a concave plate 32, a limiting column 33, a limiting rotating shaft 34 and a connecting shaft 35, where the concave plate 32 refers to a structural member having a certain concave space, and may be, for example, a V-shaped member, a U-shaped member, an arc-shaped member, and the like. One end of the limiting rotating shaft 34 is fixed at the lower part of one side of the concave plate 32, the other end is movably installed on the connecting piece 10 through a bearing, and the limiting rotating shaft 34 is positioned below the firing pin 4 after installation. The limiting column 33 is fixed in the groove at the other side of the concave plate 32 and is used for limiting or releasing the striker 4 by matching with the toggle teeth 11. One end of the connecting shaft 35 is fixedly connected with the concave plate 32, and the other end of the connecting shaft is movably connected in the lock catch 30 after passing through the through hole on the connecting piece 10 downwards. When the limit release mechanism 7 is mounted, the striker pin 4 is located just between the concave plates 32 of the two limit heads 31. When the setting tooth 11 on the striker 4 moves between the concave plates 32 of the two limiting heads 31 under the control of the driving mechanism 6, it will be automatically limited by the limiting columns 33.

It should be noted that the limiting post 33 in this embodiment is a cylindrical structure, the lock catch 30 is provided with an oval locking hole, the aperture of the locking hole is slightly larger than the outer diameter of the limiting post 33, the lower end of the limiting post 33 is located in the locking hole or below the locking hole, and the limiting post 33 can move in the locking hole within a small range without moving the trigger 28 and other components. The limit column 33 with a cylindrical structure can move in a small range in the oval lock hole without driving the trigger 28 and other components to move through the oval lock hole, so that the poking teeth 11 are automatically limited when moving to the position corresponding to the opening-closing limit part under the control of the driving mechanism 6.

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 fig. 3, the linear motion mechanism 3 includes a ball screw 36, a screw shaft bearing block 37 and a screw shaft sleeve 38, and the screw shaft bearing block 37 is fixed at the front end of the slave cylinder 2, and may be fixed directly in front of the slave cylinder 2 by a structural member below the master cylinder 1. 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 both fixed with flanges, and the screw shaft sleeve 38 is fixed with the piston rod through the flanges. One end of the ball screw 36 passes through the screw shaft bearing 37 and then 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 secondary piston 9 through the ball screw 36 and the screw boss 38.

In order to ensure the stability of the linear motion mechanism 3 for controlling the linear motion of the auxiliary piston 9, the linear motion mechanism 3 further includes a positioning assembly, the positioning assembly includes two positioning blocks 39 and two positioning rings 40, the two positioning blocks 39 are symmetrically fixed between the auxiliary cylinder 2 and the screw rod bearing block 37, and a positioning groove 41 is formed along the length direction of the positioning blocks 39. Specifically, to simplify the structure, the positioning block 39 may be formed by linearly extending the side walls on both sides of the front end of the sub cylinder 2 toward the screw shaft bearing block 37. The positioning ring 40 is fixed between the screw rod bearing seat 37 and the auxiliary cylinder 2, and positioning bosses 42 extending into the positioning grooves 41 are respectively arranged on both sides of the positioning ring 40. When the driving mechanism 6 controls the auxiliary piston 9 to move through the ball screw 36, under the limiting action of the positioning boss 42 and the positioning groove 41, the auxiliary piston 9 can only move linearly in the auxiliary cylinder 2, so that the stability of the nail fixing device is ensured.

Example 7

As the most preferred embodiment of the invention, the invention discloses a double-cylinder electric nail fixer, which comprises a main cylinder 1, a secondary cylinder 2, a linear motion mechanism 3, a firing pin 4, a needle tube assembly 5, a driving mechanism 6 and a limit releasing mechanism 7, as shown in figures 1-5. Wherein,

The main cylinder 1 is fixedly connected with the auxiliary cylinder 2, and the fixed main cylinder 1 is positioned right above the auxiliary cylinder 2. A main piston 8 and a sub-piston 9 are provided in the main cylinder 1 and the sub-cylinder 2, respectively, and the main cylinder 1 and the sub-cylinder 2 are communicated with each other through a gas passage shim plate 15 fixed to the rear end, and the flow of gas in the main cylinder 1 and the sub-cylinder 2 can be controlled by controlling the positions of the main piston 8 and the sub-piston 9 in the main cylinder 1 and the sub-cylinder 2.

Further, a gasket 46 is fixed by bolts between the cylinder head 44 and the cylinder block 43 of the master cylinder 1, and a cushion 45 is fixed in the cylinder head 44 of the master cylinder 1.

The needle tube assembly 5 is fixedly connected with the main cylinder 1 through a connecting piece 10, and the connecting piece 10 is preferably of a plate-shaped structure, and is provided with a plurality of through holes according to requirements so as to be fixedly connected with other components or allow other components to pass through. 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 reset piece 52, wherein 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. The firing channel for the firing pin 4 to move is provided in the firing pin guide holder 50, and the inner diameter of the firing channel is matched with the inner diameter of the front firing section 12 of the firing pin 4 and is smaller than the outer diameter of the middle control section 13, so as to limit the firing pin 4 when firing. The bottom plate 51 is arranged below the firing channel through the fixing plate 56, the nail clamp 54 is fixed below the bottom plate 51, a nail inlet corresponding to the firing channel is formed in the bottom plate 51, and nails in the nail clamp 54 can enter the firing channel through the nail inlet. 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. The elastic reset piece 52 comprises a reset rod and a reset spring, one end of the reset rod is limited at one side of the fixing plate 56, the other end of the reset rod penetrates through the fixing plate 56 and then is fixedly connected with the needle tube arm 53, and the reset spring is sleeved on the reset rod and is positioned between the needle tube arm 53 and the fixing plate 56.

Further, a sensor 55 is fixed to the connecting member 10 and is connected to the driving mechanism 6 and the syringe assembly 5, respectively, and the sensor 55 is used for detecting the displacement/pressure of the syringe 47 and controlling the driving mechanism 6 to operate according to the detected displacement/pressure. Specifically, the reset rod of one set of elastic reset elements 52 (or extending the reset rod) can be used in conjunction with the sensor 55 to detect the displacement/pressure of the needle tube 47. When the needle tube 47 is pushed to move toward the rear end, the needle tube arm 53 of the needle tube 47 drives the return arm to move toward the sensor 55, and the displacement/pressure of the needle tube 47 is detected by detecting the position of the return arm or the pressure applied to the sensor 55, thereby controlling the operation of the drive mechanism 6.

One end of the firing pin 4 is movably arranged in the needle tube component 5, and the other end of the firing pin passes through the shock pad seat 45 and then is connected with the main piston 8. The firing pin 4 is including preceding percussion section 12, well control section 13 and the back piston link 14 of fixed connection in proper order, and preceding percussion section 12 is circular, and well control section 13 is the platykurtic structure, and the width of well control section 13 is greater than the diameter of preceding percussion section 12, and the both sides of well control section 13 evenly are equipped with a plurality of stirring teeth 11. Preferably, the dialing teeth 11 are uniformly arranged on two sides of one end of the middle control section 13 close to the front firing section 12, and the number of the dialing teeth 11 on each side can be 6-10.

The limiting and releasing mechanism 7 is arranged beside the firing pin 4 and used for limiting or releasing the firing pin 4 through the poking teeth 11. The firing pin limiting mechanism specifically comprises an opening-closing limiting part and a control component, wherein the opening-closing limiting part is movably arranged on a connecting piece 10 and used for limiting the firing pin 4 through a poking tooth 11. The control component is arranged below the connecting piece 10 and connected with the opening-closing type limiting part, and the control component controls the opening or closing of the opening-closing type limiting part to release or limit the striker 4.

Further, the control assembly comprises a linkage arm 26, a lever 27, a trigger 28 and a support base 29 fixed below the connecting piece 10, the support base 29 comprises a horizontal base body and a vertical base body perpendicular to the horizontal base body, one end of the linkage arm 26 is symmetrically hinged with a lock catch 30, the other end of the linkage arm penetrates through the vertical base 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 horizontal base body, and the lower end of the lever 27 is fixedly connected with the trigger 28. The opening-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 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; spacing post 33 is fixed and is used for spacing or release striker 4 at the opposite side of notch plate 32, and the one end and the notch plate 32 fixed connection of connecting axle 35, the other end pass connecting piece 10 back downwards and swing joint in hasp 30, and wherein, spacing post 33 is cylindrical structure, is equipped with oval-shaped lockhole on the hasp 30, and the lower extreme of spacing post 33 is located the lockhole, and spacing post 33 can remove in the lockhole. When releasing is needed, the trigger 28 is pulled, the trigger 28 controls the linkage arm 26 to move leftwards through the lever 27, then the linkage arm 26 drives the concave plate 32 to open towards the outer side of the firing pin 4 through the lock catch 30 and the connecting shaft 35, and further the limiting column 33 is separated from the poking tooth 11, and releasing of the firing pin 4 is achieved. In the energy storage process, the limit column 33 can move in the oval lock hole in a small range without driving the trigger 28 and other components to move, so that the automatic limit of the firing pin 4 is realized conveniently.

The linear motion mechanism 3 is connected with the auxiliary piston 9 and used for controlling the auxiliary piston 9 to do reciprocating linear motion in the auxiliary cylinder 2. The linear motion mechanism 3 includes a ball screw 36, a screw shaft bearing 37, a screw shaft sleeve 38, and a positioning assembly, the screw shaft bearing 37 is fixed to the front end of the sub cylinder 2, and the screw shaft bearing 37 is further fixed to the lower portion of the front end of the main cylinder 1 through a structural member. A piston rod for controlling the auxiliary piston 9 is fixedly arranged on the auxiliary piston 9, flanges are respectively fixed on the screw shaft sleeve 38 and the piston rod, and the screw shaft sleeve 38 and the piston rod are fixed through the flanges. One end of the ball screw 36 is connected to the driving mechanism 6 after passing through the screw bearing block 37, and the other end is connected to the screw boss 38. The positioning assembly comprises a positioning block 39 and a positioning ring 40, the positioning block 39 is symmetrically fixed between the auxiliary cylinder 2 and the screw rod bearing seat 37, and a positioning groove 41 is formed in the length direction of the positioning block 39, specifically, the positioning block 39 can be formed by linearly extending the side walls on the two sides of the front end of the auxiliary cylinder 2 to the screw rod bearing seat 37. The positioning ring 40 is fixed between the screw rod bearing seat 37 and the auxiliary cylinder 2, and positioning bosses 42 extending into the positioning grooves 41 are respectively arranged 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 comprises a motor 16, a first speed reducer 17, a second speed reducer 18, a one-way clutch, a transmission shaft 19, a poking component 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 poking component 20 are sequentially connected through a rotating shaft, the poking component 20 is arranged on one side of the firing pin 4 and can be meshed with the poking teeth 11, and the poking component 20 can control the firing pin 4 to move towards the rear end through the poking teeth 11 when the motor 16 rotates. The bevel gear 21 is arranged between the first speed reducer 17 and the second speed reducer 18 and connected with the ball screw 36 in the linear motion mechanism 3, and 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 forwards, 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 oppositely, namely the main piston 8 moves towards the rear end and the auxiliary piston 9 moves towards the front end, and the gas in the main cylinder 1 enters the auxiliary cylinder 2; when the driving mechanism 6 rotates reversely, the driving mechanism 6 controls only the linear motion mechanism 3 to operate, and the sub piston 9 is reset to allow the gas in the sub cylinder 2 to enter the main cylinder 1. In order to facilitate the effective control of the firing pin 4, an arc-shaped clearance notch is formed on the side surface of the firing pin guide seat 50 for facilitating the installation of the striking assembly 20 on one side of the firing pin 4. In addition, to improve the stability of the driving mechanism 6, the rotating shaft in the driving mechanism 6 may be connected with other components through bearings and/or structural members.

Further, stir subassembly 20 and stir post 25 including last driving wheel 22, lower driving wheel 23, center pin 24 and many, center pin 24 is fixed on transmission shaft 19, goes up driving wheel 22 and fixes respectively at the both ends of center pin 24 with lower driving wheel 23, and many stir the one side that post 25 evenly fixed between last driving wheel 22 and lower driving wheel 23 with the mode that the arc was arranged, and stir the arc length that post 25 is the arc after the arc is fixed and be greater than or equal to the arc length of going up the opposite side between driving wheel 22 and the lower driving wheel 23. The striking assembly 20 is arranged at 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 positioned above and below the firing pin 4, and the striking assembly 20 controls the action of the firing pin 4 through the striking column 25.

When the nail fixer is not used and is in an initial state, the main piston 8 is positioned at the left end of the main cylinder 1, and the auxiliary piston 9 is positioned at the right end of the auxiliary cylinder 2. When it is desired to fire a nail using the tacker, the principle is as follows:

the needle tube 47 is pressed forcefully to make the needle tube 47 move towards the right end, then the motor 16 is controlled to rotate forwards, and the striker 4 and the linear motion mechanism 3 are controlled to act simultaneously under the matching action of 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. Wherein, under the driving action of the toggle column 25 in the toggle assembly 20 on the toggle teeth 11, the firing pin 4 moves towards the rear end of the master cylinder 1 and drives the master piston 8 to move towards the rear end. The ball screw 36 in the linear motion mechanism 3 converts the rotation of the motor 16 into linear motion, and drives the secondary piston 9 to move towards the front end, at this time, the primary piston 8 and the secondary piston 9 move towards each other, the gas in the primary cylinder 1 enters the secondary cylinder 2, and the pressure of the gas in the primary cylinder 1 is reduced. When the striker pin 4 and the main piston 8 move to the set position, the limit post 33 in the limit release mechanism 7 limits the striker pin 4 by means of the setting tooth 11.

And then the motor 16 is controlled to rotate reversely, at the moment, the motor 16 only controls the linear motion mechanism 3 to act, the linear motion mechanism 3 controls the auxiliary piston 9 to move towards the rear end, so that the auxiliary piston 9 is reset, in the resetting process of the auxiliary piston 9, the gas in the auxiliary cylinder 2 enters the main cylinder 1, the gas pressure in the main cylinder 1 is increased, and the pressurization and energy storage of the nail fixer are realized. When the energy is accumulated to the set value, the trigger 28 is pulled to open the limiting head 31, the firing pin 4 is released at the moment when the limiting column 33 is separated from the toggle teeth 11, and the firing pin 4 obtains instantaneous high-speed kinetic energy and moves towards the needle tube 47 under the pushing action of high-pressure gas in the main cylinder 1, so that a nail preset in the needle tube 47 is instantaneously fired out.

In the above process, it should be noted that, when the toggle assembly 20 starts to rotate until each toggle column 25 completes toggling once, one side of the toggle assembly 20 not provided with the toggle column 25 is just located on the side of the toggle teeth 11, and at this time, the two limit heads 31 in the limit release mechanism 7 just limit the firing pin 4 through the first toggle teeth 11, so as to prevent the firing pin 4 from moving to the front end. When the striking assembly 20 is rotated again until the striking pin 25 starts striking the striking pin 4, the two stopper heads 31 of the stopper release mechanism 7 will continue to stopper the striking pin 4 by the following striking teeth 11 until the striking pin 4 moves to the rear predetermined position. Because only one side is provided with and stirs post 25 in stirring subassembly 20, therefore when firing pin 4 moves to rear end preset position, its one side that does not set up and stir post 25 just is located and stirs the side of tooth 11, controls two spacing heads 31 and opens the release firing pin 4 and can not lead to the fact the blockking to firing pin 4 this moment, has both guaranteed the stable action of firing pin 4, has guaranteed the effective percussion of nail again.

Finally, the applicant also tested the tacker according to the present example as follows:

and performing dynamic numerical simulation on the nail fixing device by constructing a virtual prototype model.

Boundary conditions are as follows: the first reducer 17 and the second reducer 18 are both planetary reducers, and are both fixed by an external gear ring, and a sun wheel rotates against the ground and a planetary gear rotates and revolves; the contact is set between the gears, the toggle assembly 20 and the striker 4, and the contact parameter setting is referred to a mechanical design manual. The preset air pressure in the cylinder 43 in the initial nailing state is set to be 0.8MPa, and when the firing pin 4 is reset, the air pressure in the cylinder 43 reaches the pressure values required by different nailing forces by adjusting the motion stroke of the auxiliary piston 9, so that the force is accurately adjustable. Therefore, the nail fixing device is set to be 5 gears according to the nailing air pressure in the simulation test: 0.93MPa, 1.04MPa, 1.18MPa, 1.36MPa, 1.6 MPa. The striking stroke of the striker 4 is set to 80mm.

The analysis method comprises the following steps: according to the state equation of gas, firstly, the change curve of the pressure in the cylinder 43 after the firing pin 4 is released by the limit release mechanism 7 is calculated, then the change curve is applied to the end face of the main piston 8, the nailing process is simulated, the movement speed of the firing pin 4 under the pushing of the gas pressure in the cylinder 43 is calculated, and the kinetic energy of the firing pin 4 is solved by combining the piston mass.

The results obtained are shown in table 1 below and in figures 6 and 7,

the simulation result shows that: as shown in fig. 6, the striker 4 has different flight speeds during the 5 gear shifting processes, and the speed ranges are: 29.73 m/s-38.98 m/s; FIG. 7 is a nailing energy diagram under different gear conditions, the nailing energy range: 88.39J to 151.93J. Therefore, the invention not only can realize effective regulation of power, but also can ensure good stability under the condition of keeping high power.

While the invention has been described with reference to specific embodiments, any feature disclosed in this specification may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise; all of the disclosed features, or all of the method or process steps, may be combined in any combination, except mutually exclusive features and/or steps.

Claims

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, wherein: 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, characterized in that: 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. A dual cylinder electric nailer 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, characterized in that: 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, wherein: 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, characterized in that: 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. The double-cylinder electric nail fixer according to any one of claims 1-4, wherein: the linear motion mechanism (3) comprises a ball screw (36), a screw bearing seat (37) and a screw shaft sleeve (38), the screw 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 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 a ball screw (36) and a screw shaft sleeve (38).

11. The double-cylinder electric nail fixer according to claim 1, wherein: the master 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 sides of the needle tube (47) are fixed with symmetrical needle tube arms (53), and the needle tube (47) is connected with the elastic reset pieces (52) through the needle tube arms (53) respectively.

13. The double-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.