Motor-Driven Piston Nailing Machine for Compact Air Compression
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Solution Overview
Problem
Existing pneumatic nailing machines are bulky and inefficient due to the need for an air compressor to generate air pressure, which affects their continuous operation and compactness.
Innovation Solution
A nailing machine design featuring a first and second cylinder with a motor-driven second piston that reciprocates to create pressure differences, using a pawl and locking mechanism to enable rapid and continuous firing of nails without an external air pump, resulting in a compact and efficient structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If an air compressor is used to generate air pressure to push the striker, then the nailing machine can operate, but the device becomes bulky and heavy
Solution Approach 1:
The patent extracts and eliminates the air compressor component from the nailing machine system. Instead of using a traditional air compressor to generate air pressure, the invention uses a motor-driven piston directly connected to the striker assembly, which compresses air only when needed for firing. This removal of the dedicated air compressor significantly reduces the overall weight and bulk of the device while maintaining the necessary power for nail driving.
Solution Approach 2:
The patent merges the air compression function with the striker driving mechanism. The motor-driven piston that moves the striker also serves to compress air in the same chamber, combining two functions (striker actuation and air compression) into a single integrated system. This eliminates the need for separate air compression equipment, reducing weight and simplifying the overall structure.
2Productivity
If an air compressor is used to generate air pressure, then the nailing machine can fire nails, but the continuous efficiency of firing cannot be guaranteed
Solution Approach 1:
The patent implements a magazine feed system that continuously supplies nails to the firing position, and a motor-driven piston that can repeatedly compress air and drive the striker in rapid succession. The magazine assembly includes a nail strip holder and feed mechanism that ensures continuous nail supply, while the motor provides sustained rotational power for continuous air compression and striker actuation, enabling reliable continuous firing operation.
Solution Approach 2:
The magazine feed system performs preliminary actions by pre-loading multiple nails in the magazine and automatically feeding them into position before firing is needed. The motor-driven system also performs preliminary air compression during the striker retraction phase, preparing compressed air in advance for the next firing cycle, thereby ensuring continuous efficient operation without interruption.
3Stress or pressure
If a traditional pneumatic pump structure is used, then air pressure can be generated, but the volume and weight of the nailing machine increase
Solution Approach 1:
The patent employs a nested structure where the piston is housed within the striker assembly, and the air compression chamber is integrated within the existing nailing machine body. The motor-driven piston moves within the same space where the striker operates, nesting the air compression function within the existing structural envelope. This eliminates the need for external air compression equipment and minimizes the overall volume of the device while maintaining sufficient air pressure for nail driving.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for a compact, reliable, and automated nailing machine that can continuously fire nails with reduced weight and space requirements, leveraging a motor to compress air and trigger the pawl for efficient operation.
Implementation Method 1
The second piston is reciprocated between a first position and a second position of the second cylinder by a motor... When the second piston is in the first position and the first piston moving inward with the striker, the striker is locked... When the second piston is in the second position, the motor drives the pawl to disengage from the locking part
Data Source
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AI summary
The present invention provides a nailing machine, belonging to nailing equipment technical field. It solves the technical problems that the prior art nailing machine takes too much space for the air compressor and the like. The nailing machine includes a closed first cylinder and a closed second cylinder disposed outside the first cylinder. A working chamber of the first cylinder and a working chamber of the second cylinder are communicated with each other. A first piston inside a first cylinder and the first piston fixedly connected with a striker. The striker has a locking part. The nailing machine also includes a pawl. The second cylinder is provided with a second piston and the second piston is reciprocated by a motor between a first position and a second position of the second cylinder. When the second piston is in the first position, after the first piston moves inward, the pawl snaps at the locking part of the striker. When the second piston is in the second position, the motor drives the pawl to disengage from the locking part. In the present invention, the motor drives the second piston to compress air, and triggers the pawl, achieving the rapid and continuous firing of strip nails. It has a compact structure, with stability and reliability.