Automatic installation machine for straight springs of soft sofa seat frame

Abstract

The invention relates to an automatic installation machine for straight springs of a soft sofa seat frame. The automatic installation machine for the straight springs of the soft sofa seat frame is characterized by comprising a rack, a horizontal movement unit, an oblique angle movement unit and two pothook compressing and nailing units. The horizontal movement unit, the oblique angle movement unit and the two pothook compressing and nailing units are arranged on the rack. An application method of the automatic installation machine for the straight springs of the soft sofa seat frame comprisesthe steps of (1) preparing; (2) lifting the springs; (3) extending the springs; (4) retracting the springs; (5) hanging pothooks; (6) compressing the pothooks and nailing; and (7) resetting. The automatic installation machine for the straight springs of the soft sofa seat frame has the advantages that (1) mechanical spring extension operation replaces manual spring extension operation, so that the labor intensity is reduced; (2) the multiple springs on the seat frame can be extended and installed for once, so that the machine is suitable for mass production; and (3) pothook compressing and nailing operation is automatically accomplished by the machine, so that the efficiency is high, and the manpower is saved.

Description

technical field [0001] The invention is an automatic installation machine for upholstered sofa seat frame straight springs, which belongs to the technical field of automatic production. Background technique [0002] In view of the fact that upholstered sofa manufacturers have a large demand for seat frames, and the straight springs used on each seat frame have a large elastic coefficient, and the force required for elongation is large, in order to reduce labor intensity, someone once designed a spring expansion tool, but because each Only one spring can be unfolded at a time. After unfolding, subsequent multi-step operations are required to complete. The production efficiency is low. Most factories still use the production method of workers manually stretching the spring. This production process mainly has the following disadvantages: [0003] 1) The straight spring of the upholstered sofa has a large elastic coefficient, and it consumes a lot of physical energy to pull it t...

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Problems solved by technology

[0002] In view of the fact that upholstered sofa manufacturers have a large demand for seat frames, and the straight springs used on each seat frame have a large elastic coefficient and require a lot of force to elongate, in order to reduce labor intensity, someone once designed a spring expansion tool, but because each Only one spring can be unfolded at a time. After unfolding, subsequent multi-step operations are required to complete. The production efficiency is low. Most factories still use the production method of workers manually stretching the spring. This production process mainly has the following disadvantages:

[0003] 1) The straight spring of the upholstered sofa has a large elastic coefficient, and it consumes a lot of physical energy to pull it to the width of the seat frame. Taking the most commonly used 520-13 straight spring as an example, it takes about 40kg of pulling force to pull it to the installation position. Long-term work may affect the A certain degree of damage to the muscles of the upper limbs of the human body;

[0004] 2) Since the spring installation process is pure manual labor, the efficiency is low;

[0005] 3) The efficiency of existing spring expansion tools is low, and most of them still adopt the production method of manual extension spring installation

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