WO2024124627A1

WO2024124627A1 - Rebar tying machine

Info

Publication number: WO2024124627A1
Application number: PCT/CN2022/143181
Authority: WO
Inventors: 王灵超; 谢寿富; 苏永宾
Original assignee: 台州市新大陆电子科技有限公司
Priority date: 2022-12-16
Filing date: 2022-12-29
Publication date: 2024-06-20
Also published as: CN115871987A

Abstract

A rebar tying machine, comprising: a housing (1); a wire feeding mechanism (2), a braking mechanism (3), and a wire winding mechanism (4) which are arranged in the housing (1); and a looping plate (5) and a guider (6) arranged at the front end of the housing (1). The looping plate (5) and the guide (6) are arranged opposite to each other; a wire guide groove (51) is formed in the looping plate (5); a wire dividing step (511) is arranged at the bottom of the wire guide groove (51); a looping groove (512) is formed at the lower end side of the wire dividing step (511), and a wire arranging groove (513) is formed at the upper end side of the wire dividing step (511). According to the tying machine, by arranging the wire dividing step (511) at the bottom of the wire guide groove (51) of the looping plate (5), the wire guide groove (51) is divided into the looping groove (512) and the wire arranging groove (513) having different depths, thereby avoiding the problems of wire output failures and poor looping effects caused by interference in a steel wire looping process.

Description

A steel bar tying machine

Technical Field

The invention relates to the field of binding machines, in particular to a steel bar binding machine.

Background technique

Chinese patent "CN201420022567.4" discloses a steel bar bundling machine, wherein a wire guide nozzle and a wire outlet block are installed on the wire outlet plate of the steel bar bundling machine, the wire guide nozzle and the wire outlet block are hollow inside to form a wire outlet channel for the steel wire to be routed, a tungsten steel column is installed on the wire outlet channel, and a tungsten steel sleeve is provided on the wire guide nozzle. When in use, under the action of the tungsten steel sleeve and the tungsten steel column, the wire is guided in a rolling manner to finally form a steel wire ring. Referring to Figure 1, the wire outlet channel is a single-slot structure. When multiple turns of iron wire are guided, the multiple turns of iron wire are very likely to interfere, which easily leads to failure of the iron wire to be discharged or poor coiling effect of the iron wire, and finally reduces the working effect of the steel bar bundling machine.

Chinese patent "CN201611109727.9" discloses an integrated wire outlet and wire guiding mechanism and a steel bar bundling machine, wherein the integrated wire outlet and wire guiding mechanism includes a curling wire outlet portion and a wire guiding portion, a boss is provided on the curling wire outlet portion, the arc-shaped wall of the boss and the curling wire outlet portion are lower than the surface area of the boss to form a guide portion for guiding the movement of the steel wire, when in use, when the iron wire enters the wire guiding portion from the curling wire outlet portion, the iron wire moves along the arc-shaped wall (guide portion) of the boss to complete the curling of the steel wire. In the above structure, when guiding multiple turns of iron wire, the iron wire on the arc-shaped wall of the boss is prone to interference, which can easily cause the iron wire to be stuck in the guide portion, resulting in wire feeding failure, or multiple turns of iron wire interfere with each other, ultimately reducing the rounding effect of the iron wire.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a steel bar bundling machine with a simple wire guide structure and which can avoid interference of the iron wires during the coiling process.

To achieve the above objectives, the technical solution of the present invention is as follows.

A steel bar bundling machine comprises a casing, a wire feeding mechanism, a braking mechanism, a wire winding mechanism arranged in the casing, and a coiling plate and a guide arranged at the front end of the casing, the coiling plate and the guide being arranged relatively to each other, and is characterized in that a wire guide groove is provided on the coiling plate, a wire dividing step is provided at the bottom of the wire guide groove, one side of the lower end of the wire dividing step is a coiling groove, and one side of the upper end of the wire dividing step is a wire following groove.

Furthermore, a guide groove is provided on the guide, and the guide groove is opposite to the wire following groove.

Furthermore, the two ends of the wire following groove are respectively a first wire inlet end and a first wire outlet end, and a guide groove is provided at the bottom of the wire following groove, and the side wall of the guide groove close to the first wire outlet end is inclined toward the loop forming groove.

Furthermore, the two ends of the wire following groove are respectively a first wire feeding end and a first wire outlet end, and a first guide surface is provided on a position of the wire following groove close to the wire winding mechanism and close to the first wire feeding end, and the first guide surface is inclined toward one side of the loop forming groove.

Furthermore, the two ends of the loop forming groove are respectively a second wire inlet end and a second wire outlet end, and the side wall of the wire guide groove is provided with a wire supporting protrusion, and the wire supporting protrusion is arranged on one side of the loop forming groove and close to the second wire inlet end.

Furthermore, the side surface of the wire-supporting protrusion close to the wire-following groove is a second guide surface, and the second guide surface is inclined toward the wire-following groove.

Furthermore, the groove width of the loop-forming groove is less than or equal to the groove width of the yarn-following groove.

Furthermore, the ratio of the width of the loop-forming groove to the width of the yarn-following groove is 1:5 to 1:1.

Further, the loop forming plate comprises a first loop plate and a second loop plate;

The first circle plate is provided with the loop forming groove, and the second circle plate is provided with the wire following groove. The depth of the wire following groove is smaller than the depth of the loop forming groove. After the first circle plate and the second circle plate are buckled together, the wire dividing step is formed between the bottom wall of the wire following groove and the loop forming groove.

Furthermore, the loop forming plate comprises a first loop plate and a second loop plate, the first loop plate is provided with the wire dividing step, and after the first loop plate and the second loop plate are buckled together, the wire guiding groove is formed between the first loop plate and the second loop plate.

The loop forming plate is provided with a first wire feeding guide plate and a second wire feeding guide plate, both of which are inclined outward along the wire guide groove, and a guide groove is formed between the first wire feeding guide plate and the second wire feeding guide plate and is connected to the wire guide groove.

Compared with the prior art, the steel bar bundling machine of the present invention has the following beneficial effects: the steel bar bundling machine of the present invention, by setting a wire dividing step at the bottom of the wire guide groove of the looping plate, divides the wire guide groove into a looping groove and a wire following groove with a depth difference. When the wire feeding mechanism guides the iron wire to the looping plate, the iron wire first enters the looping groove, and then enters the wire following groove under the bending of the bottom of the looping groove and the support and guidance of the guide. The above-mentioned wire dividing step can avoid the interference between the second circle of iron wire and the first circle of iron wire, and ensure that the second circle of iron wire can be smoothly guided out of the wire following groove. In addition, by setting the looping groove on the lower end side of the wire dividing step and the wire following groove on the upper end side of the wire dividing step, the diameter of the iron wire loop formed by the bending of the looping groove can be larger, so that the iron wire can be close to the bottom of the wire following groove when moving in the wire following groove, and finally improve the looping effect of the second circle of iron wire.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a cross-sectional view of a prior art “CN201420022567.4” steel bar bundling machine;

FIG2 is a cross-sectional view of the guide portion in the prior art “CN201611109727.9”;

Fig. 3 is a front view of the steel bar bundling machine of embodiment 1;

Fig. 4 is a front view of the loop forming plate;

FIG5 is a perspective view of the first circle plate;

Fig. 6 is a perspective view of the second circle plate;

Fig. 7 is a cross-sectional view of the A-A section in Fig. 4;

Fig. 8 is a top view of the loop forming plate;

Fig. 9 is a cross-sectional view of the section B-B in Fig. 4;

FIG10 is a bottom view of the loop forming plate;

FIG11 is a perspective view of a guide;

FIG12 is a perspective view of the second ring plate in Example 2;

FIG13 is a bottom view of the loop forming plate in Example 2;

Casing 1; wire feeding mechanism 2; braking mechanism 3; wire winding mechanism 4; coiling plate 5; first coil plate 5'; second coil plate 5"; wire guide groove 51; wire dividing step 511; coiling groove 512; second wire inlet end 5121; second wire outlet end 5122; wire following groove 513; first wire inlet end 5131; first wire outlet end 5132; first guide surface 5133; guide groove 5134; wire supporting protrusion 514; second guide surface 5141; first wire inlet guide plate 52; second wire inlet guide plate 53; guide 6; guide groove 61.

Detailed ways

Example 1

A steel bar bundling machine, see FIG3, comprises a housing 1, a wire feeding mechanism 2 arranged in the housing 1, a brake mechanism 3, a wire winding mechanism 4, and a coiling plate 5 and a guide 6 arranged at the front end of the housing 1 and arranged opposite to each other. The wire feeding mechanism 2 is used to guide the iron wire to the coiling plate 5, the coiling plate 5 and the guide 6 are used to bend the iron wire into a coil shape so as to wrap the steel bar, the wire winding mechanism 4 is used to tighten the iron wire wound on the steel bar, and the brake mechanism 3 is used to brake the wire reel when the wire feeding mechanism stops feeding the wire. When the steel bar bundling machine is to be used, the wire reel is loaded into the housing to carry out the steel bar bundling work.

Referring to Figs. 4-7, a wire guide groove 51 is provided on the looping plate, and a wire dividing step 511 is provided at the bottom of the wire guide groove 51. The lower end of the wire dividing step 511 is a looping groove 512, and the upper end of the wire dividing step 511 is a wire following groove 513. The groove bottoms of the looping groove 512 and the wire following groove 513 are in an arc shape. Referring to Fig. 7, the cross-sectional shape of the wire dividing step 511 is a right-angle step shape. Of course, it can also be a step shape of other forms, which will not be described here. The above-mentioned strapping machine divides the wire guide groove 51 into a looping groove 512 and a wire following groove 513 with a depth difference by providing a wire dividing step 511 at the bottom of the looping plate wire guide groove 51. When the wire feeding mechanism guides the iron wire to the coiling plate, the iron wire first enters the coiling groove 512, and then the iron wire head enters the wire following groove 513 under the bending of the bottom of the coiling groove 512 and the support and guidance of the guide 6. The above-mentioned wire dividing step 511 can avoid the interference between the second coil of iron wire and the first coil of iron wire, and ensure that the second coil of iron wire can be smoothly guided out of the wire following groove 513. In addition, by setting the coiling groove 512 on the lower end side of the wire dividing step 511 and the wire following groove 513 on the upper end side of the wire dividing step 511, the diameter of the first coil of iron wire formed by the coiling groove 512 can be larger, so that the second coil of iron wire can be close to the bottom of the wire following groove 513 when moving in the wire following groove 513, and finally improve the coiling effect of the second coil of iron wire.

In the above structure, it should be explained that, first, the looping groove 512 is located at the lower end of the wire dividing step 511, and the wire following groove 513 is located at the upper end of the wire dividing step 511, which means that in the wire guiding groove 51, the depth of the looping groove 512 is greater than the depth of the wire following groove 513 (or, in other words, at the same central angle, the arc length of the groove bottom of the looping groove 512 is greater than the arc length of the groove bottom of the wire following groove 513); second, in order to make the boundary between the looping groove 512 and the wire following groove 513 clearer, in the direction of the top projection of the looping plate, the boundary between the upper and lower ends of the wire dividing step 511 is used as the dividing line, the lower end side of the wire dividing step 511 is the looping groove 512, and the upper end side of the wire dividing step 511 is the wire following groove 513.

The height of the above-mentioned wire dividing step 511 is between 0.45 and 3.15. It should be noted that the height of the wire dividing step 511 refers to the distance between the bottom of the loop forming groove 512 and the bottom of the wire following groove 513. When the iron wire enters the coiling groove 512, the coiling groove 512 bends the iron wire into a circle or arc shape with a certain curvature. When the iron wire enters the wire following groove 513, if the height of the wire dividing step 511 is too low, when the second circle of iron wire enters the wire following groove 513, it is difficult for the iron wire to stick to the bottom of the wire following groove 513, and the iron wire is easy to enter the coiling groove 512. The second circle of iron wire is easy to interfere with the first circle of iron wire and affect the rounding effect of the iron wire; if the height of the wire dividing step 511 is too high, when the second circle of iron wire enters the wire following groove 513, the iron wire will stick more tightly to the bottom of the wire following groove 513, which increases the positive pressure of the iron wire on the wire following groove 513, increases the friction between the iron wire and the wire following groove 513, increases the load of the driving device in the wire feeding mechanism 2, and shortens the use time of the driving device in the wire feeding mechanism 2.

4-10, a guide groove 5134 is provided at the bottom of the threading groove 513, and the side wall of the guide groove 5134 close to the first thread outlet end 5132 is inclined toward the looping groove 512. By providing the guide groove 5134, after the first circle of wire enters the threading groove 513, it moves into the looping groove 512 under the action of the side wall of the guide groove 5134, which ensures that the first circle of wire is looped in the looping groove 512, avoiding interference after the second circle of wire enters the threading groove 513.

Referring to Fig. 3 and Fig. 11, the guide 6 is provided with a guide groove 61, which is opposite to the wire groove 513. During the process of the wire being coiled, the guide groove 61 can support the wire, thereby preventing the wire from affecting the wire coiling under its own gravity. In addition, the guide groove 61 is opposite to the wire groove 513, which can enable the second circle of wire to enter the wire groove 513 when coiling, thereby avoiding interference with the first circle of wire in the coil groove 512 and causing the problem of wire failure and poor coiling effect. When the above-mentioned guide 6 is assembled, the distance between the guide 6 and the coil groove 512 (wire groove 513) should be adaptively set with the depth difference between the coil groove 512 and the wire groove 513, so that the diameter of the first circle of wire is larger, thereby ensuring that the second circle of wire can move close to the bottom of the wire groove 513 in the wire groove 513.

Referring to Fig. 4-10, the two ends of the coiling groove 512 are respectively the second wire inlet end 5121 and the second wire outlet end 5122, and the side wall of the wire guide groove 51 is provided with a wire support protrusion 514. In this embodiment, the wire support protrusion 514 can also be a cylindrical tungsten steel column, and its structure is a common structure in this field, which will not be repeated here. The wire support protrusion 514 is arranged on one side of the coiling groove 512 and close to the second wire inlet end 5121. By providing the wire support protrusion 514, the iron wire can be suppressed and limited by the wire support protrusion 514 during the coiling process, avoiding the resistance generated during deformation or its own gravity from escaping from the bottom of the coiling groove 512, thereby preventing the iron wire from being effectively bent. In addition, during use, in order to avoid interference between the iron wire and the wire supporting protrusion when the wire winding mechanism 4 tightens the iron wire, when the handheld strapping machine is used, the strapping machine is tilted toward the side where the wire following groove is provided. In this way, the iron wire will shrink toward the side of the wire following groove during the tightening process, thereby avoiding interference between the iron wire and the wire supporting protrusion.

In the above scheme, as an improvement, the width of the looping groove 512 is less than or equal to the width of the wire-following groove 513. Specifically, the width ratio of the looping groove 512 to the wire-following groove 513 is 1:5 to 1:1. By providing the wire-following groove 513 with a larger width, the wire-following groove 513 has enough width to accommodate multiple turns of wire, thereby expanding the application range of the strapping machine.

In the present embodiment, the loop forming plate comprises a first loop plate 5' and a second loop plate 5'' which are interlocked with each other, the first loop plate 5' is provided with the loop forming groove 512, and the second loop plate 5'' is provided with the wire following groove 513, the depth of the wire following groove 513 is less than the depth of the loop forming groove 512, and after the first loop plate 5' and the second loop plate 5'' are interlocked, the wire dividing step 511 is formed between the bottom wall of the wire following groove 513 and the loop forming groove 512. As another optional embodiment, the first loop plate 5' is provided with the wire dividing step 511, that is, the loop forming groove 512 and the wire following groove 513 are both arranged on the first loop plate 5', and the second loop plate 5'' is interlocked with the first loop plate 5' to form the wire guiding groove 51. The loop forming plate has a simple structure and is easy to process, manufacture and assemble.

Referring to Fig. 3-10, a first wire-feeding guide plate 52 and a second wire-feeding guide plate 53 are provided below the looping plate, and both the first wire-feeding guide plate 52 and the second wire-feeding guide plate 53 are inclined outwardly along the wire guide groove 51, and a guide groove 5134 is formed between the first wire-feeding guide plate 52 and the second wire-feeding guide plate 53 and communicates with the wire guide groove 51. Since the guiding space of the guide groove 5134 is relatively large, even if the wire deviates before entering the wire guide groove 51, the guide groove 5134 can still guide the wire into the wire guide groove 51.

Example 2

The purpose of this embodiment is to provide a steel bar bundling machine, the specific structure of which is the same as that of the embodiment 1, and will not be described in detail here. The difference is that:

12-13, the two ends of the wire groove 513 are respectively the first wire inlet end 5131 and the first wire outlet end 5132. The first guide surface 5133 is provided at the rear side of the wire groove 513 and close to the first wire inlet end 5131. The first guide surface 5133 is an arc surface and is inclined toward the coiling groove 512. When the first coil of wire is to be bent, if the wire feeding mechanism does not guide the wire into the coiling groove 512, the wire will move along the first guide surface 5133 and finally enter the coiling groove 512, thereby ensuring that the first coil of wire is coiled in the coiling groove 512.

In the above structure, it should be noted that in Example 1, a first guide surface 5133 may also be provided at the rear side of the wire following groove 513 and close to the first wire feeding end 5131 , so as to further ensure that the first circle of wire can enter the circle forming groove 512 .

In addition, in this embodiment, referring to FIG. 13 , the wire-supporting protrusion 514 is configured as a protrusion structure protruding from the wire groove, and the side of the wire-supporting protrusion 514 close to the wire groove 513 is a second guide surface 5141, and the second guide surface 5141 is an arc-shaped surface, and the second guide surface 5141 is inclined toward the wire groove 513. By providing the second guide surface 5141, when the second coil of wire is about to enter the first wire-feeding end 5131, if the wire is inclined toward the coiling groove 512, the wire moves along the second guide surface 5141 and finally enters the wire groove 513, thereby avoiding interference between the two coils of wire caused by entering the coiling groove 512.

While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

A steel bar bundling machine comprises a casing, a wire feeding mechanism, a braking mechanism, a wire winding mechanism arranged in the casing, and a coiling plate and a guide arranged at the front end of the casing, the coiling plate and the guide being arranged relatively to each other, and is characterized in that a wire guide groove is provided on the coiling plate, a wire dividing step is provided at the bottom of the wire guide groove, one side of the lower end of the wire dividing step is a coiling groove, and one side of the upper end of the wire dividing step is a wire following groove.
The steel bar bundling machine according to claim 1 is characterized in that: a guide groove is provided on the guide, and the guide groove is opposite to the wire groove.
The steel bar bundling machine according to claim 1 is characterized in that: the two ends of the wire groove are respectively a first wire input end and a first wire output end, a guide groove is provided at the bottom of the wire groove, and the side wall of the guide groove close to the first wire output end is inclined toward the looping groove.
The steel bar bundling machine according to claim 1 is characterized in that: the two ends of the wire groove are respectively the first wire input end and the first wire output end, and a first guide surface is provided on the wire groove close to the wire winding mechanism and close to the first wire input end, and the first guide surface is inclined toward the coiling groove side.
The steel bar bundling machine according to claim 1 is characterized in that: the two ends of the coiling groove are respectively the second wire inlet end and the second wire outlet end, the side wall of the wire guide groove is provided with a wire supporting protrusion, and the wire supporting protrusion is arranged on one side of the coiling groove and close to the second wire inlet end.
The steel bar bundling machine according to claim 5 is characterized in that the side surface of the wire supporting protrusion close to the wire groove is a second guide surface, and the second guide surface is inclined toward the wire groove.
The steel bar bundling machine according to claim 1 is characterized in that the groove width of the looping groove is less than or equal to the groove width of the wire-following groove.
The steel bar bundling machine according to claim 1 is characterized in that the ratio of the width of the looping groove to the width of the wire-following groove is 1:5 to 1:1.
The steel bar bundling machine according to claim 1, characterized in that: the looping plate comprises a first loop plate and a second loop plate;

The first circle plate is provided with the loop forming groove, and the second circle plate is provided with the wire following groove. The depth of the wire following groove is smaller than the depth of the loop forming groove. After the first circle plate and the second circle plate are buckled together, the wire dividing step is formed between the bottom wall of the wire following groove and the loop forming groove.
The steel bar bundling machine according to claim 1 is characterized in that: the looping plate includes a first loop plate and a second loop plate, the first loop plate is provided with the wire dividing step, and after the first loop plate and the second loop plate are buckled together, the wire guide groove is formed between the first loop plate and the second loop plate.
The steel bar bundling machine according to any one of claims 1 to 10 is characterized in that: a first wire feed guide plate and a second wire feed guide plate are provided on the loop forming plate, the first wire feed guide plate and the second wire feed guide plate are both inclined outward along the wire guide groove, and a guide groove is formed between the first wire feed guide plate and the second wire feed guide plate and is connected to the wire guide groove.