CN-116330224-B - High-speed nailing control method of nailing gun

CN116330224BCN 116330224 BCN116330224 BCN 116330224BCN-116330224-B

Abstract

The invention relates to a high-speed nailing control method of a nail gun, and belongs to the technical field of tools. The control circuit of the nail gun comprises an intelligent device, wherein the signal input end of the intelligent device is respectively connected with a trigger switch, a mode switching button and a displacement sensor at the driving wheel, and the control output end of the intelligent device is connected with the controlled end of the motor and is controlled according to the steps of continuous judgment, trigger judgment, driving lifting, displacement judgment, continuous displacement, trigger judgment and braking and stopping. The control logic for continuous indexing and then impact judgment can shield the interference of impact vibration of the gun mouth when nailing is removed through continuous indexing, so that the problem of misjudgment and shutdown caused by the prior impact judgment and the later indexing is solved ingeniously, and high-speed nailing operation is ensured.

Inventors

CHANG FENGZHI
WU GUIYOU

Assignees

南京腾亚精工科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230227

Claims (4)

1. A high-speed nailing control method for a nail gun comprises a shell with a grab handle, a control circuit and The energy storage mechanism consists of a cylinder body and a piston which are positioned in the shell; the striking mechanism consists of a telescopic gun nozzle of a nailing seat at the front end of the shell; The nailing mechanism consists of a firing pin connected with the piston and extending to a gun nozzle; the lifting mechanism is composed of a motor transmission driving wheel meshed with the firing pin; the intelligent device is characterized in that the control circuit comprises an intelligent device, wherein the signal input end of the intelligent device is respectively connected with a trigger switch, a mode switching button and a displacement sensor at the driving wheel; the control output end of the intelligent device is connected with the controlled end of the motor and is controlled according to the following steps: The first step, the continuous sending judgment, namely judging that the continuous sending is carried out according to the mode switching button signal after the power-on, and carrying out the next step; Secondly, judging whether to fire according to the trigger switch signal, if yes, proceeding the next step, otherwise, returning to the previous step; Thirdly, driving a lifting-starting motor to rotate, driving a piston to compress air by a lifting mechanism through a firing pin to store energy, and firing nailing; Judging whether an index sensor signal is detected or not in the process from the beginning of rotation of the motor to the preset initial rotation angle of rotation of the driving wheel of more than 15 degrees and less than 360 degrees, if so, immediately performing the next step, otherwise, performing the seventh step; Fifthly, continuously indexing, namely continuously driving the driving wheel to rotate for a first preset angle or a first preset time by controlling the motor from the detection of the signal of the indexing sensor, and carrying out the next step; step six, touch judgment, namely judging whether the driving wheel receives a touch switch signal or not in the process of turning from a first preset turning angle to a second preset turning angle or from the first preset time to the second preset time, if not, carrying out the next step, and if so, returning to the step three; And seventh, stopping the rotation after the motor is controlled to brake.
2. The method of controlling a high speed nailing gun of claim 1 wherein said second predetermined angle corresponds exactly to the position of engagement of a first side tooth of said striker with a first drive roller of said drive wheel.
3. The method of controlling high-speed nailing of a nail gun of claim 1 wherein said second predetermined angle of rotation is 250.+ -. 15 °.
4. The method of controlling high-speed nailing of a nail gun of claim 2 or 3 wherein said first predetermined angle of rotation is 100.+ -. 10 °.

Description

High-speed nailing control method of nailing gun Technical Field The invention relates to a control method of a nail gun, in particular to a high-speed nailing control method of a nail gun, and belongs to the technical field of tools. Background When a fastener striking tool such as a nail gun works, a piston in a cylinder body is driven by compressed air power to drive a firing pin to drive a nail into a workpiece, so that the tool is a common tool in industries such as construction, decoration and the like. In recent years, electric gas spring nailers have been replaced for reasons such as poor safety of nailers using gas as a power source. The U.S. patent No. US8011441 discloses a typical structure of an electric air spring nail gun, which comprises an energy storage mechanism consisting of a cylinder body and a piston in a shell, wherein the front end of a nailing seat is provided with a telescopic gun nozzle, one side of the cylinder body is provided with a nail box, one side of the cylinder body is provided with a grab handle with a battery pack, one side of the gun nozzle is provided with a nail box, the nail box is provided with a nail pusher for pushing a row of nails to the nailing seat, an electric lifting mechanism for driving the piston to compress and store energy is arranged between the grab handle and the nail box, the lifting mechanism comprises a driving wheel meshed with a firing pin, and the driving wheel is in transmission connection with a motor for providing electric energy for the battery pack. When the gun nozzle is pressed down, the motor is started, the striker is driven by the lifting mechanism to drive the piston to compress air from the temporary locked preparation position, and after the striker is separated from the engagement with the lifting mechanism, the striker is released suddenly to drive the row nails of the nailing seat in the nailing box, so that the row nails are ejected from the gun nozzle. In order to realize quick nailing, the control system of the existing electric spring nail gun not only comprises a trigger switch which is usually positioned at a handle, a strike switch which is positioned at a nailing seat, a driving wheel position sensor which is positioned at a driving device, but also comprises a mode switching button, and not only has a single-shot strike mode of pressing down a gun nozzle and pressing the trigger once, but also can realize a continuous strike mode, namely continuous strike can be realized by pressing down the gun nozzle and pressing the trigger without loosening, and automatic repeated strike and strike can be realized, thereby improving the nailing operation speed. However, as can be seen from US8387718, the continuous control logic is still based on single shot control, i.e. after each nailing, the motor is braked first, and then whether the trigger switch is released is detected, if not, the motor is started again, and the nailing operation is continued. Because the motor needs to be braked after every nailing in the continuous action process, the nailing efficiency is further improved necessarily, and the service life of the motor is shortened. In other words, since the motor for driving the compressed air is first suspended and restarted when the next nailing stroke is to be entered after the nailing stroke is completed, the situation that the nail gun still cannot respond to the action of an operator in time in the high-speed nailing operation is caused, and the phenomenon that continuous firing cannot be performed sometimes occurs, namely, when the quick nailing operation is performed, the motor is triggered again when the nailing is not completed, and at the moment, the triggering is considered as invalid again because the previous nailing cycle is not completed. Disclosure of Invention The invention aims to provide a high-speed nailing control method of a nailing gun, which can further effectively improve the continuous nailing speed aiming at the defects in the prior art. In order to achieve the aim, the invention provides a high-speed nailing control method for a nail gun, which comprises a shell with a grab handle and a nail gun The energy storage mechanism consists of a cylinder body and a piston which are positioned in the shell; the striking mechanism consists of a telescopic gun nozzle of a nailing seat at the front end of the shell; The nailing mechanism consists of a firing pin connected with the piston and extending to a gun nozzle; the lifting mechanism is composed of a motor transmission driving wheel meshed with the firing pin; the control circuit comprises an intelligent device, wherein the signal input end of the intelligent device is respectively connected with a trigger switch, a touch switch, a mode switching button and a displacement sensor at the driving wheel; the control output end of the intelligent device is connected with the controlled end of the motor and is controlled according to the following steps