Thread-bond type binding machine with thread breakage preventing function

Abstract

The invention discloses a thread-bond type binding machine with a thread breakage preventing function. The thread-bond type binding machine is characterized in that a drilling device and a threading device are installed above or below a binding platform, a thread placing groove is formed in the top surface of the binding platform, a plurality of drilling and threading hole positions are arranged in the binding platform or the thread placing groove, each drilling and threading hole position is longitudinally aligned with a corresponding drilling knife or a threading needle, a pay-off plate is arranged below or above the binding platform in a sliding mode or in a rotating mode, a plurality of pay-off hooks are transversely fixed on the pay-off plate at intervals, one pay-off hook is arrangedbetween every two adjacent drilling and threading hole positions, and each pay-off hook is adjacent to the thread placing groove. According to the thread-bond type binding machine, the structure is simple, paying off is performed through pay-off grooves and pay-off needles firstly before threading, a reserved thread with enough length is formed between every two adjacent binding hole positions, so that each binding hole position is provided with the enough reserved thread to enter the corresponding binding hole, the comprehensive acting force acting on the binding cotton threads during threading is greatly reduced, so that in the case of the thread-bond type binding machine, thread breakage does not appear in the threading process.

Description

technical field [0001] The invention relates to the technical field of wire-bound binding machines, in particular to a wire-bound binding machine capable of preventing thread breakage. Background technique [0002] The thread-bound binding machine is equipped with a binding platform, and a drilling device and a threading needle that are slidably installed above the binding platform. The drilling device generally has 3-5 hollow drills arranged horizontally, and threading needles with the same number of drills are installed at the same time. , each threading needle corresponds to a drill bit, as shown in the Chinese invention patent application number 88202255.5 and the Chinese invention patent application number 201811036959.5. When binding documents, first place the binding cotton thread horizontally in the wire groove of the binding platform, then place the binding documents on the binding platform, and then drill multiple binding holes on the binding documents through the ...

AI Technical Summary

Problems solved by technology

[0003] But, in the threading process, each threading needle hooks and draws the binding cotton thread respectively and passes through a plurality of binding holes of the binding document simultaneously; In the binding hole of the bound document, there is a large frictional resistance between the binding cotton thread hooked by each threading needle and the binding hole. During the threading process, only the threading needle is used to forcibly pull the binding cotton thread to move and pass through, so that the binding cotton thread passes through at the same time. In each binding hole, the binding cotton thread is subjected to a comprehensive force at the same time, and the overlapping force on the binding cotton thread includes the friction force from each binding hole, the friction force of the binding platform, the friction force of the threading groove and the pulling force of the threading needle. Binding cotton thread often breaks during the process, so it is necessary to improve

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