Automatic art frame stretching machine

Abstract

The invention relates to frame stretching machines, in particular to an automatic art frame stretching machine. The machine comprises a canvas feeding frame. The canvas feeding frame is rotationally connected with a canvas feeding rotary shaft through a bearing. A frame feeding frame is arranged at a discharging end of the canvas feeding frame. A nailing frame is arranged at the discharging end ofthe canvas feeding frame. A traction base plate is arranged in the center of the nailing frame in the width direction. An upper end face of the traction base plate is connected with a clamping assembly. Two ends of a toothed synchronous belt are connected to the upper end face of the traction base plate by the clamping assembly in a tight pressing manner. A lower end face of the traction base plate is fixedly connected with a traction support. The traction support is connected with the middle of a traction shaft in a holding manner. Two ends of the traction shaft are connected with linear bearings respectively. The linear bearings are detachably connected with a canvas stretching frame through connecting pieces. The lower part of the canvas stretching frame is connected with a canvas pressing assembly. The automatic art frame stretching machine can automatically complete several steps of processing of art frames including canvas and frame conveying, canvas stretching on the frames, nailing and canvas cutting, the processing efficiency is greatly improved, and manpower is saved.

Description

technical field [0001] The invention relates to a frame stretching machine, in particular to an automatic frame stretching machine for art picture frames. Background technique [0002] The art picture frame is a rectangular wooden frame, generally the length and width are 200~1200mm, and the thickness is 15-50mm. The front of the wooden frame is stretched with canvas. After the canvas is tensioned, the edge of the cloth is turned over to the back and fixed with nails. The front is for creating works of art. The methods of making art picture frames include manual stretching and mechanical stretching. Artificial stretching is low in efficiency and labor-intensive for workers, and has been gradually replaced by mechanical stretching. [0003] In the prior art, the Chinese Patent Publication No. CN108407527A discloses an automatic nail frame machine, which includes a top plate, a lifting frame, a lifting device, a front and rear nailing device and a left and right nailing devi...

AI Technical Summary

Problems solved by technology

[0004] There are some problems in the use of the above-mentioned technical solution: the manual operation of loading the canvas and the picture frame causes the production of the picture frame stretcher to be limited by the loading speed of the operator, and the automation efficiency of the picture frame stretcher is low , which greatly reduces the production efficiency; at the same time, when the length, width and thickness of the produced picture frame are changed, it needs to be shut down for a long time and the adjustment on the mechanical device needs to be completed by professionals; in addition, the nailing density is limited by the installation distance and cannot be adjusted

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