Expanding type cloth clamping mechanism and embroidery frame

Abstract

The invention relates to the technical field of embroidery machines, and particularly discloses an expanding type cloth clamping mechanism and an embroidery frame. The expanding type cloth clamping mechanism comprises a basic unit, a cloth supporting unit, a cloth pressing unit and a driving unit. The cloth supporting unit comprises two oppositely-arranged supporting arms, a driving cavity is formed between the supporting arms, and at least one supporting arm is a movable arm; the cloth pressing unit is provided with an accommodating cavity used for accommodating the cloth supporting unit; andthe driving unit is arranged in the driving cavity and used for driving the movable arm to open outwards. According to the expanding type cloth clamping mechanism, no resistance exists between the cloth pressing unit and the cloth supporting unit in the dismounting and mounting process, dismounting and mounting are labor-saving, an automatic connecting part is conveniently arranged between the cloth pressing unit and the cloth supporting unit, and a beneficial structural basis is provided for automatic transformation; and the clamping force can be adjusted according to the movement amplitudeof the movable arm so as to adapt to the cloth with different thicknesses, adjustment is flexible, and the application range is wider.

Description

technical field [0001] The invention relates to the technical field of embroidery machines, in particular to an expanding cloth clamping mechanism and an embroidery frame. Background technique [0002] Notification number is that the Chinese invention patent of CN2293578Y discloses a kind of composite material embroidery frame of computer embroidery machine, with reference to the appendix of this patent figure 2 And attached image 3 , wherein the cloth is fixed by the cloth holding post 3 and the cloth clamp 5. This type of cloth fixing method has the following technical defects: [0003] (1) The cloth clips must be clamped and disassembled manually, and usually there are multiple cloth clips on one side of an embroidery frame, and manual disassembly and assembly are required one by one, which is inefficient and labor-intensive for operators; [0004] (2) The clamping force of the cloth clamp 5 cannot be adjusted, if the clamping force is too large, it is easy to leave i...

AI Technical Summary

Problems solved by technology

[0003] (1) The cloth clips must be clamped and disassembled manually, and usually there are multiple cloth clips on one side of an embroidery frame, and manual disassembly and assembly are required one by one, which is inefficient and labor-intensive for operators;

[0004] (2) The clamping force of the cloth clamp 5 cannot be adjusted, if the clamping force is too large, it is easy to leave indentations on the cloth and even damage the fabric; if the clamping force is too small, the fabric cannot be effectively fixed;

[0005] (3) The thickness of the fabrics commonly used for embroidery is different. Since the clamping force of the existing fabric clamps cannot be adjusted, the clamping force of fabrics of various thicknesses is the same. For thinner fabrics, the clamping force is not enough. For thicker fabrics, if the clamping force is too large, the fabric will be damaged, and the versatility is poor;

[0006] (4) When the density of embroidery is high, the existing fabric clips are easy to be pulled up, making the fabric fixation invalid

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