Wire feeding needle for binding machine

Abstract

The thread feeding needle comprises a needle body, and the left side portion and the right side portion of the needle body extend outwards to form reinforcing ribs respectively. A U-shaped groove is formed in the top end of the needle body. By arranging the reinforcing ribs, the structural strength of the needle body is improved, the situation that the needle body is broken in the frequent thread feeding process is reduced, the service life of the thread feeding needle is prolonged, and the problem that the service life is short in the past is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of binding machines, in particular to a thread feeding needle for a binding machine with a long service life. Background Art

[0002] A thread binding machine is a binding machine that uses thread as material to bind multiple sheets of paper. When the thread binding machine is working, the punching mechanism located above the machine punches holes in multiple pages or documents, and then the thread feeding needle located below the machine feeds the thread in the thread groove from the bottom of the hole to the top outside of the hole, tying the thread together to complete the binding.

[0003] In the existing threading and binding machines, the mechanism for feeding the thread is generally provided with a thread feeding needle. See the patent document with application number CN2019215720713, which discloses a thread feeding needle of a thread-bound automatic file binding machine. The thread feeding needle includes a needle body, a mounting portion arranged at the first end of the needle body, and a fork wire groove arranged at the second end of the needle body. A wire avoidance portion is arranged on one side or two opposite sides of the needle body on the side where the fork wire groove is located. The two fork wire grooves of the threading needle are an integrally formed structure with the needle body, and the front and rear sides of the fork wire groove respectively have a fork wire foot extending upward. The middle and upper part of the needle body of the thread feeding needle is flat, and the lateral width of the section with the wire avoidance portion on the needle body is smaller than the lateral width of the section without the wire avoidance portion on the needle body. It can be understood that the cross-sectional size of the needle body from the middle to the upper part gradually decreases upward, resulting in the upper part of the needle body being relatively fragile. In the process of frequent thread feeding, the upper part of the needle body is prone to breakage, and there is a problem of short service life. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a thread feed needle for a binding machine, which improves its own structural strength by improving the structure of the thread feed needle itself, thereby solving the problem of short service life of the thread feed needle for the binding machine in the past.

[0005] In order to solve the above technical problems, the present invention discloses a thread feeding needle for a binding machine, comprising a needle body, wherein the left and right sides of the needle body respectively extend reinforcing ribs outward; and a U-shaped groove is provided at the top end of the needle body.

[0006] The cross-section of the needle body is T-shaped.

[0007] The top end of the needle body extends upward to form a first fork leg and a second fork leg that are spaced apart, and a U-shaped groove is formed between the first fork leg and the second fork leg.

[0008] The length of the first fork leg is greater than the length of the second fork leg.

[0009] The width of the first fork leg is greater than the width of the second fork leg.

[0010] A positioning slot is provided at the bottom of the needle body, and the positioning slot is located on one side of the second fork pin.

[0011] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: by providing reinforcing ribs, the structural strength of the needle body is increased, the occurrence of needle body breakage during frequent wire feeding is reduced, the service life of the wire feeding needle is extended, and the problem of short service life in the past is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 2 is a schematic structural diagram of a thread feed needle for a binding machine in an embodiment;

[0014] Figure 2 is a top view of the thread feeding needle in the embodiment;

[0015] Figure 3 2 is a front view of the thread feeding needle in the embodiment. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, device, product or end including a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units inherent to these processes, methods, products or ends.

[0018] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0019] The present invention discloses a specific implementation of a thread feeding needle for a binding machine, see Figures 1 to 3 The thread feeding needle comprises a needle body 1, and the needle body 1 is generally cylindrical before being processed.

[0020] As an improvement, the left and right sides of the needle body 1 respectively extend outwardly with reinforcing ribs 2. Specifically, the reinforcing ribs 2 can be formed by opening an L-shaped limiting groove 21 on the left and right sides of the originally cylindrical needle body 1. The limiting groove 21 is opened on the left and right sides of the needle body 1 to form the reinforcing ribs 2, so that the cross-sectional shape of the needle body 1 is set in a T shape. The limiting groove 21 is used to accommodate the binding wire, so as to avoid the binding wire being stuck in the binding hole due to the small gap between the wire feeding needle and the external binding hole, reduce the resistance when feeding the wire, and avoid breaking the binding wire.

[0021] In this embodiment, a U-shaped groove 3 is provided at the top end of the needle body 1. Specifically, the top end of the needle body 1 extends upward to form a first fork line foot 31 and a second fork line foot 32 that are spaced apart, and the U-shaped groove 3 is formed between the first fork line foot 31 and the second fork line foot 32. The length of the first fork line foot 31 is greater than the length of the second fork line foot 32, and the width of the first fork line foot 31 is greater than the width of the second fork line foot 32. By setting the first fork line foot 31 and the second fork line foot 32 high and low, debugging and use are simpler. The first fork line foot 31 with a longer length is the main traction section, which can limit the binding line more accurately, and the second fork line foot 32 with a shorter length is more conducive to the binding line sliding out of the U-shaped groove 3, so that the machine can release the line more accurately.

[0022] In addition, a positioning bayonet 4 is provided at the bottom of the needle body 1, and the positioning bayonet 4 is located on one side of the second fork wire foot 32, so as to prevent mistakes and ensure that the installation directions of multiple wire feeding needles are consistent.

[0023] Compared with the prior art, the thread feeding needle for the binding machine of the present embodiment increases the structural strength of the needle body 1 by providing a reinforcing rib 2, reduces the occurrence of breakage of the needle body 1 during frequent thread feeding, extends the service life of the thread feeding needle, and solves the problem of short service life in the past.

[0024] Finally, it should be noted that the thread feed needle for a binding machine disclosed in the embodiment of the present invention is only a preferred embodiment of the present invention, which is only used to illustrate the technical solution of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A thread feeding needle for a binding machine, characterized in that: It comprises a needle body, wherein the left side and the right side of the needle body respectively extend reinforcing ribs outward; A U-shaped groove is provided at the top end of the needle body; the cross-sectional shape of the needle body is T-shaped; a first fork leg and a second fork leg are extended upward from the top end of the needle body, and the U-shaped groove is formed between the first fork leg and the second fork leg.

2. A thread feeding needle for a binding machine according to claim 1, characterized in that: The length of the first fork leg is greater than the length of the second fork leg.

3. A thread feeding needle for a binding machine according to claim 1, characterized in that: The width of the first fork leg is greater than the width of the second fork leg.

4. A thread feeding needle for a binding machine according to claim 1, characterized in that: A positioning bayonet is provided at the bottom of the needle body, and the positioning bayonet is located at one side of the second fork pin.

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