A steel bar bundling machine capable of ejecting wire coils

Abstract

A steel bar bundling machine capable of ejecting wire loops, comprising: a machine shell and a wire feeding mechanism, a wire forming plate, a guide, and a wire winding mechanism arranged inside the machine shell. A wire guiding groove is provided on the wire forming plate, and a wire supporting convex block is arranged in the wire guiding groove; a wire supporting part is formed between the wire supporting convex block and the bottom wall of the wire guiding groove; the iron wire on the wire spool is guided to the wire supporting part through the wire feeding mechanism; the wire winding mechanism includes an inner sleeve and a driving assembly for driving the inner sleeve to move back and forth or rotate. A push rod sliding groove is arranged in the wire guiding groove, and a wire ejecting push rod capable of moving in the push rod sliding groove is arranged in the push rod sliding groove. The wire ejecting push rod is in linkage cooperation with the inner sleeve. When the inner sleeve moves back and forth, the wire ejecting push rod is driven to move back and forth in linkage; when the wire ejecting push rod moves forward, the iron wire in the wire supporting part is ejected from the wire supporting part. Compared with the prior art, the steel bar bundling machine capable of ejecting wire loops of the present invention does not need to be provided with a motion conversion structure for the inner sleeve and the wire ejecting structure, has fewer parts, a simple structure, is convenient for assembly, and is beneficial to reducing the production and manufacturing cost of the steel bar bundling machine.

Description

Technical Field

[0001] The present invention relates to the field of strapping machines, and more particularly to a steel bar strapping machine capable of ejecting wire loops. Background Art

[0002] Steel bar strapping machines have the advantage of efficiently strapping steel bars and are now widely used in the field of construction engineering. Existing steel bar strapping machines include a wire feeding mechanism, a braking mechanism, a wire guiding mechanism (including a wire forming plate and a guide), a wire winding mechanism, and a wire cutting mechanism. Among them, the wire feeding mechanism is used to guide the iron wire to the wire forming plate, and under the action of the wire forming plate and the guide, the iron wire is formed into a loop shape to wind around the steel bar. The wire cutting mechanism is used to cut the iron wire, and the wire winding mechanism is used to tighten the iron wire wound around the steel bar.

[0003] In order to ensure the wire forming effect in the wire forming plate, support wire bumps are generally provided in the wire guiding groove of the wire forming plate, which can prevent the iron wire from falling under its own gravity and affecting its wire forming effect. However, when the wire winding mechanism tightens the iron wire, the iron wire will shrink. If the iron wire or the support wire bumps are not processed, the support wire bumps will catch the iron wire and affect its wire winding. Currently, the prior art provides solutions to the above technical problems.

[0004] Chinese Patent "CN107849858A" discloses a strapping machine, which discloses that "the curling guide unit 5A includes a retracting mechanism 53a for allowing the guide pin 53 (i.e., the support wire bump) to retract from the path through which the wire W moves through the operation of winding the wire W around the steel bar S. After winding the wire W around the steel bar S, the retracting mechanism 53a is displaced in association with the operation of the strapping unit 7A, and before the timing of winding the wire W around the steel bar S, the retracting mechanism 53a retracts the guide pin 53 from the path through which the wire W moves", and "the operation of the movable member 83 moving in the forward direction is transmitted to the retracting mechanism 53a, and the guide pin 53 is retracted from the path through which the wire W moves". That is, the above patent discloses that when the movable member 83 moves forward, it drives the retracting mechanism 53a to move, and then the guide pin 53 moves laterally to withdraw from the guiding groove 52. In the above structure, the movable member 83 moves back and forth, and the guide pin 53 moves left and right. Therefore, it is necessary to set a structure for converting the movement direction, and its structure is complex, and the production and manufacturing cost is high. In addition, since the guide pin 53 is arranged in the groove, the transmission accuracy requirement of the structure for converting the movement direction is relatively high. Otherwise, the guide pin cannot move in the left and right reverse directions, and its movement direction may deviate, which easily causes the movement of the guide pin to be stuck and ultimately affects its use effect. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a steel bar strapping machine capable of ejecting wire loops with a simple braking mechanism and a smooth movement of the structure for ejecting wire loops.

[0006] To achieve the above object, the technical solution of the present invention is as follows.

[0007] A steel bar bundling machine capable of ejecting wire loops, comprising:

[0008] A machine shell, inside which there is a wire spool bin for accommodating a wire spool wound with iron wire; and a wire feeding mechanism provided inside the machine shell for guiding the iron wire;

[0009] A forming plate and a guide arranged oppositely at the front end of the machine shell. The forming plate is provided with a wire guiding groove, and a wire supporting convex block is arranged in the wire guiding groove; a wire supporting part is formed between the wire supporting convex block and the bottom wall of the wire guiding groove; the iron wire on the wire spool is guided to the wire supporting part through the wire feeding mechanism;

[0010] A wire winding mechanism, including an inner sleeve and a driving component for driving the inner sleeve to move back and forth or rotate,

[0011] The wire guiding groove is provided with a push rod sliding groove, and a wire ejecting push rod that can move in the push rod sliding groove is arranged in the push rod sliding groove. The wire ejecting push rod is in linkage cooperation with the inner sleeve. When the inner sleeve moves back and forth, the wire ejecting push rod is driven to move back and forth; when the wire ejecting push rod moves forward, the iron wire in the wire supporting part is ejected from the wire supporting part.

[0012] Further, the push rod sliding groove communicates with the inner cavity of the machine shell and the wire guiding groove. The end of the wire ejecting push rod close to the wire guiding groove is an ejecting end, and the ejecting end is used for ejecting the iron wire from the wire supporting part.

[0013] Further, the push rod sliding groove is arranged on the same side as the wire supporting convex block.

[0014] Further, the push rod sliding groove is arranged at a position close to the wire supporting convex block.

[0015] Further, the push rod sliding groove is arranged in the wire supporting part.

[0016] Further, the ejecting end includes an avoidance part and a wire ejecting part. The avoidance part is arranged on the side of the wire ejecting part away from the inner sleeve, and the avoidance part is arranged in the push rod sliding groove. When the wire ejecting push rod slides forward, the wire ejecting part protrudes into the wire guiding groove.

[0017] Further, the distance between the wire ejecting part and the wire supporting convex block is 0.5 - 4 mm.

[0018] Further, the other end of the wire ejecting push rod relative to the ejecting end is a first connection end. A linkage component is arranged between the wire ejecting push rod and the inner sleeve. One end of the linkage component is connected to the first connection end, and the other end of the linkage component is sleeved on the outer side wall of the inner sleeve, and it can move in linkage with the outer side wall of the inner sleeve or rotate relative to the outer side wall of the inner sleeve.

[0019] Further, the linkage assembly includes a linkage rod and a linkage plate. The two ends of the linkage rod are respectively a second connection end and a third connection end. The second connection end is hinged to the first connection end, and the third connection end is fixedly connected to the linkage plate. The linkage plate is sleeved on the outer side wall of the inner sleeve.

[0020] Further, a clamping block is provided on the linkage plate, and a first connection hole matching with the clamping block is provided at the third connection end.

[0021] Further, the jacking screw push rod, the linkage rod and the clamping block are located on the same horizontal plane.

[0022] Further, a first sliding groove is provided on the looping plate. The first sliding groove communicates with the push rod sliding groove and is opposite to the rear end of the push rod sliding groove. The first connection end and the second connection end are connected in the first sliding groove and can slide back and forth in the first sliding groove.

[0023] Further, it further includes a support. A support rod is provided on the support, and a second connection hole matching with the support rod is provided on the linkage plate.

[0024] The above-mentioned wire supporting bump is detachably connected to or integrally formed with the looping plate.

[0025] Compared with the prior art, the wire-reinforcing bar tying machine capable of ejecting a wire loop according to the invention has the following advantages: when the inner sleeve moves forward, the jacking screw push rod moves in the same (forward) direction, so as to eject the iron wire out of the wire supporting part. It does not need to set a motion conversion structure, has few components, a simple structure, is convenient for assembly, and is beneficial to reducing the production and manufacturing cost of the wire-reinforcing bar tying machine. In addition, in the prior art, the wire is avoided by controlling the left-right movement of the wire supporting bump. Since the wire supporting bump is mainly used for supporting the wire to improve the looping effect of the wire, when the movement of the wire supporting bump gets stuck and cannot extend into the wire guiding groove, it cannot realize the function of supporting the wire, which will affect the looping effect of the wire. The invention can solve the above problems by additionally providing a jacking screw push rod. In addition, the wire is ejected out of the wire supporting part only when the jacking screw push rod moves forward, and is located in the push rod sliding groove under other working conditions, which can avoid interference between the wire and the jacking screw push rod when the wire forms a loop in the wire guiding groove and affect the looping effect of the wire. Description of the Drawings

[0026] Figure 1 It is an explanatory diagram of a wire-reinforcing bar tying machine of the prior art "CN107849858A";

[0027] Figure 2 It is the front view of the wire-reinforcing bar tying machine of the present invention;

[0028] Figure 3 It is a perspective view of the wire winding mechanism (excluding the driving motor and the gear reducer) and the looping plate;

[0029] Figure 4Exploded perspective view of the looping plate, the jacking screw push rod and the linkage assembly;

[0030] Figure 5 Perspective view of the second looping plate;

[0031] Figure 6 Perspective view of the first looping plate;

[0032] Figure 7 Top view of the exploded structure of the jacking screw push rod and the linkage rod;

[0033] Machine housing 1; wire spool bin 11; support 12; support rod 13;

[0034] Wire feeding mechanism 2;

[0035] Braking mechanism 3;

[0036] Wire winding mechanism 4; inner sleeve 41; drive assembly 42; drive motor 421; gear reducer 422; screw 423; wire winding nozzle 43;

[0037] Looping plate 5; first looping plate 51; wire guiding groove 511; first sliding groove 512; third sliding groove 513; second looping plate 52; wire supporting bump 521; second sliding groove 522; push rod sliding groove 523;

[0038] Guide 6;

[0039] Wire spool 7;

[0040] Jacking screw push rod 8; first connection end 811; ejection end 82; avoidance part 821; jacking screw part 822;

[0041] Linkage assembly 9;

[0042] Linkage rod 91; second connection end 911; third connection end 912; first connection hole 9121;

[0043] Linkage plate 92; clamping block 921; second connection hole 922. Detailed implementation manners

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0045] In the present invention, unless otherwise clearly specified or limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] The following further describes the technical solutions of the present invention with reference to the Figure 2-7 accompanying drawings.

[0047] A steel bar bundling machine capable of ejecting a wire coil, see Figure 2 , which includes a machine shell 1, a wire feeding mechanism 2, a braking mechanism 3, a wire winding mechanism 4 provided in the machine shell 1, and forming plates 5 and a guide 6 provided at the front end of the machine shell 1 and arranged oppositely. Among them, a wire spool bin 11 is provided in the machine shell 1, and the wire spool bin 11 is used to accommodate a wire spool 7 wound with iron wire. The wire feeding mechanism 2 is used to guide the iron wire to the forming plate 5. The forming plate 5 and the guide 6 are used to bend the iron wire into a coil shape to wind the steel bar. The wire winding mechanism 4 is used to tighten the iron wire wound on the steel bar, and the braking mechanism 3 is used to brake the wire spool 7 when the wire feeding mechanism 2 stops feeding wire. It should be noted that the above wire spool 7 and the iron wire wound thereon are environmental features, that is, when the steel bar bundling machine is sold separately, there is no wire spool 7 in the wire spool bin 11. When bundling and tying the steel bar, the wire spool 7 needs to be loaded into the machine shell 1 to carry out the steel bar bundling work.

[0048] See Figure 2-3 , the wire winding mechanism 4 includes an inner sleeve 41 and a driving assembly 42 for driving the inner sleeve 41 to move back and forth or rotate. A wire winding nozzle 43 is hinged to the front end of the inner sleeve 41. The driving assembly 42 includes a driving motor 421, a gear reducer 422, and a screw 423. One end of the gear reducer 422 is threadedly connected to the driving motor 421, and the other end is connected to the screw 423. The screw 423 is threadedly engaged with the inner wall of the inner sleeve 41 relative to the other end of the gear reducer 422. For example, a threaded block cooperating with the screw 423 is provided in the inner cavity of the inner sleeve 41, or an internal thread is provided in the inner cavity of the inner sleeve 41 to achieve the threaded cooperation with the screw 423. When in use, the driving motor 421 drives the screw 423 to rotate through the gear reducer 422, and the screw 423 drives the inner sleeve 41 to move back and forth or rotate. The above wire winding mechanism 4 is an existing technology in the art and will not be elaborated here. See Figure 4-6The coiling plate 5 comprises a first coil plate 51 and a second coil plate 52 which are opposite and buckled together. An arc-shaped wire guide groove 511 is provided on the side of the first coil plate 51 relative to the second coil plate 52. A wire support protrusion 521 is provided on the second coil plate 52 at a position corresponding to the wire inlet of the wire guide groove 511. The wire support protrusion 521 is detachably connected or integrally formed with the coiling plate 5. After the first coil plate 51 and the second coil plate 52 are buckled together, the wire support protrusion 521 is located in the wire guide groove 511, and the length of the wire support protrusion 521 extending into the wire guide groove 511 is less than the groove width of the wire guide groove 511. The space between the wire support protrusion 521 and the bottom wall of the wire guide groove 511 is the wire support portion. The iron wire on the wire reel 7 is guided to the wire support portion through the wire feeding mechanism 2, and then moves along the bottom wall of the wire guide groove 511 to guide the iron wire into a coiled shape.

[0049] See also Figure 4-7 A push rod slot 523 is provided in the wire guide slot 511 and is arranged on the same side as the wire support protrusion 521. The push rod slot 523 connects the inner cavity of the casing 1 and the wire guide slot 511. A push rod slot 8 is provided in the push rod slot 523 and can move in the push rod slot 523. The push rod 8 cooperates with the inner sleeve 41. When the inner sleeve 41 moves forward and backward, the push rod 8 moves forward and backward in linkage; when the push rod 8 moves forward, the iron wire in the wire support portion is pushed out of the wire support portion. When the above steel bar bundling machine is in use, when the driving motor 421 drives the screw rod 423 to rotate through the gear reducer 422, and then drives the inner sleeve 41 to move forward, the push rod 8 moves forward in linkage, thereby pushing the iron wire out of the supporting wire part, and the inner sleeve 41 and the push rod 8 move in the same direction. The linkage structure between them is simpler than the existing "retracting the supporting wire protrusion, and the direction of retracting the supporting wire protrusion is perpendicular to the inner sleeve" scheme, with fewer parts and components, and is easy to assemble, which is beneficial to reducing the production cost of the steel bar bundling machine and improving the stability and reliability of the use of the steel bar bundling machine. In addition, the prior art avoids the iron wire by controlling the left and right movement of the wire supporting protrusion 521. Since the wire supporting protrusion 521 is mainly used to support the iron wire and improve the coiling effect of the iron wire, when the movement of the wire supporting protrusion 521 is stuck and cannot extend out of the wire guide groove 511, it cannot realize the function of supporting the iron wire, which affects the coiling effect of the iron wire. The present embodiment can solve the above problem by providing a push wire push rod 8. In addition, the push wire push rod 8 will push the iron wire out of the wire supporting part only when it moves forward. Under other working conditions, it is located in the push rod slide groove 523. This can avoid the interference between the iron wire and the push wire push rod 8 when the iron wire is coiled in the wire guide groove 511, thereby affecting the coiling effect of the iron wire.

[0050] In the above setscrew structure, the ratio of the width of the setscrew push rod 8 to the depth of the wire supporting part is 2:5 to 6:1. Herein, the above width means: if the setscrew push rod 8 moves telescopically, the distance in the direction perpendicular to the horizontal plane where the moving direction of the setscrew push rod 8 lies is the width. The width of the setscrew push rod 8 refers to the width of the setscrew push rod 8 located in the wire supporting part when the setscrew push rod 8 slides in the push rod chute 523 to push out the wire. The depth of the wire supporting part refers to the distance from the wire supporting convex block 521 to the bottom of the wire guiding groove 511. By specifically defining the dimensional relationship between the width of the setscrew push rod 8 and the depth of the wire supporting part, it is ensured that when the setscrew push rod 8 pushes out the wire, it can exactly push out multiple wires located in the wire supporting part, avoiding the situation that the setscrew push rod 8 cannot push out all the wires in the wire supporting part due to the too small width of the setscrew push rod 8, resulting in some wires remaining in the wire supporting part, and finally causing interference between the wire and the wire supporting convex block 521 during the process of wire tightening. It also avoids affecting the reliability of the wire supporting convex block 521 due to the too large width of the setscrew push rod 8. The too large width of the setscrew push rod 8 also increases the contact area between the wire and the setscrew push rod 8, thereby increasing the friction force between the wire and the setscrew push rod 8, which increases the load of the driving motor 421 and the power consumption of the driving motor 421.

[0051] See Figure 5-6, the second ring plate 52 is provided with a second slide groove 522 horizontally on the side of the first ring plate 51, the front end of the second slide groove 522 is connected to the wire guide groove 511, and the rear end is located outside the wire guide groove 511. The first ring plate 51 is provided with a third slide groove 513 horizontally on the side of the second ring plate 52, the length of the third slide groove 513 is smaller than the second slide groove 522, and is opposite to the middle position of the second slide groove 522. When the first ring plate 51 and the second ring plate 52 are buckled, the second slide groove 522 and the third slide groove 513 form the push rod slide groove 523. The first ring plate 51 is also provided with a first slide groove 512 that runs through the front and rear sides, the first slide groove 512 is located at the rear side of the third slide groove 513 and is connected thereto, and the first slide groove 512 is also opposite to the rear end of the second slide groove 522. The two ends of the top screw push rod 8 are respectively the first connection end 81 and the ejection end 82. A linkage assembly 9 is provided between the top screw push rod 8 and the inner sleeve 41. The linkage assembly 9 includes a linkage rod 91 and a linkage plate 92. The two ends of the linkage rod 91 are respectively the second connection end 911 and the third connection end 912. The second connection end 911 is hinged with the first connection end 81, and the third connection end 912 is fixedly connected with the linkage plate 92. The linkage plate 92 is sleeved on the outer wall of the inner sleeve 42, and can be moved in linkage with the outer wall of the inner sleeve 42 or rotated relative to the outer wall of the inner sleeve 42. During assembly, the top screw push rod 8 is set in the push rod slide groove 523, and then the first circle plate 51 and the second circle plate 52 are buckled, and then the second connection end 821 and the first connection end 811 are connected through the first slide groove 512. When the inner sleeve 41 moves forward, the linkage plate 92 is driven to move forward, and the linkage plate 92 drives the linkage rod 91 and then drives the top screw push rod 8 to move forward, and finally the iron wire is ejected from the support wire part. During the above movement, it should be noted that when the top screw push rod 8 has not moved forward, the overall structure of the top screw push rod 8 is located in the overall space of the second slide groove 522 and the third slide groove 513. When the ejection rod moves forward, the top screw portion located in the third slide groove 513 protrudes from the wire guide groove 511, thereby ejecting the wire from the support wire portion. By setting the third slide groove 513, an escape space is provided for the top screw push rod 8, which can prevent the wire from interfering with the top screw push rod 8 when the wire is coiled in the wire guide groove 511 and affecting the coiling of the wire. In the above structure, by setting the top screw push rod 8, the linkage rod 91, the linkage plate and the three slide grooves, the linkage movement of the top screw push rod 8 and the inner sleeve 41 and the ejection of the wire coil can be realized. The structure is simple and easy to manufacture.

[0052] See also Figure 3-4 , Figure 7, the set screw push rod 8 is a straight rod, and the front end of the set screw push rod 8 is the ejection end 82, which includes a relatively thin clearance portion 821 and a relatively thick set screw portion 822. The clearance portion 821 is provided on the front side of the set screw portion 822, and the two are connected by an arc section. Of course, it can also be connected by a straight line segment. When the set screw push rod 8 is arranged in the push rod chute 523, the clearance portion 821 is located in the second chute 522, and the set screw portion 822 straddles the second chute 522 and the third chute 513; when the set screw push rod 8 has not moved yet, the set screw portion 822 is located in the space between the second chute 522 and the third chute 513; when the ejection rod moves forward, the set screw portion 822 located in the third chute 513 protrudes into the wire guiding groove 511. During this process, the iron wire moves along the arc section between the clearance portion 821 and the set screw portion 822 and the side wall of the set screw portion 822, so as to eject the iron wire out of the wire supporting portion. By arranging the clearance portion 821 on the front side of the set screw portion 822, it will neither interfere with the wire forming a loop nor prevent the iron wire from being guided to the side wall of the set screw portion 822 when the set screw push rod 8 moves forward, so as to eject the iron wire. If the clearance portion 821 is not provided, the set screw portion 822 is likely to press the iron wire when moving forward, making it difficult to eject the iron wire, and ultimately causing the iron wire to interfere with the ejection lug.

[0053] As an improvement, the push rod chute 523 is arranged at a position close to the wire supporting lug 521. Preferably, the push rod chute 523 is arranged in the wire supporting portion and at a position close to the wire supporting lug 521, and the distance between the set screw portion and the wire supporting lug is 0.5 - 4 mm. In this way, when the set screw portion 822 of the set screw push rod 8 ejects the iron wire, the iron wire between the wire supporting lug 521 and the push rod chute 523 will not interfere with the wire supporting lug 521, enabling the iron wire to be tightened smoothly.

[0054] As an improvement, the set screw push rod 8, the linkage rod 91, and the block 921 are located on the same horizontal plane. In this way, the force transmission between the linkage plate 92, the linkage rod 91, and the set screw push rod 8 all occurs in the horizontal direction, which can improve the transmission efficiency. In addition, the linkage plate 92, the linkage rod 91, and the set screw push rod 8 all move in the same horizontal direction, which can make their movement smoother and prevent jamming.

[0055] See Figure 2-4 , a support 12 is also sleeved on the wire winding mechanism 4. A support rod 13 is provided on the support 12, and a second connection hole 922 cooperating with the support rod 13 is provided on the linkage plate 92. By arranging the support 12 and providing the support rod 13 on the support 12 to fix the linkage plate 92, the movement of the linkage plate 92 can be made more stable, which can ensure the stability of the linkage movement between the linkage plate 92 and the set screw push rod 8, make its movement smoother, and prevent jamming.

[0056] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes may be made therein without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A steel bar bundling machine capable of ejecting wire loops, comprising: A machine shell, inside which there is a wire spool bin for accommodating a wire spool wound with iron wire; And a wire feeding mechanism arranged inside the machine shell for guiding the iron wire; A forming plate and a guide arranged at the front end of the machine shell and opposite to each other. The forming plate is provided with a wire guiding groove, and a wire supporting convex block is arranged in the wire guiding groove; a wire supporting part is formed between the wire supporting convex block and the bottom wall of the wire guiding groove; the iron wire on the wire spool is guided to the wire supporting part through the wire feeding mechanism; A wire winding mechanism, including an inner sleeve and a driving component for driving the inner sleeve to move forward and backward or rotate, characterized in that: A push rod sliding groove is arranged in the wire guiding groove, and a wire ejecting push rod that can move in the push rod sliding groove is arranged in the push rod sliding groove. The wire ejecting push rod is in linkage cooperation with the inner sleeve. When the inner sleeve moves forward and backward, the wire ejecting push rod is driven to move forward and backward; when the wire ejecting push rod moves forward, the iron wire in the wire supporting part is ejected out of the wire supporting part; The ratio of the width of the wire ejecting push rod (8) to the depth of the wire supporting part is 2:5 to 6:

1.

2. The steel bar bundling machine according to claim 1, wherein: The push rod sliding groove communicates with the inner cavity of the machine shell and the wire guiding groove. The end of the wire ejecting push rod close to the wire guiding groove is the ejecting end, and the ejecting end is used for ejecting the iron wire out of the wire supporting part.

3. The steel bar bundling machine according to claim 1, characterized in that: The push rod sliding groove is arranged on the same side as the wire supporting convex block.

4. The steel bar bundling machine according to claim 1, characterized in that: The push rod sliding groove is arranged at a position close to the wire supporting convex block.

5. The steel bar bundling machine according to claim 4, wherein: The push rod sliding groove is arranged in the wire supporting part.

6. The steel bar bundling machine according to claim 2, characterized in that: The ejecting end includes an avoidance part and a wire ejecting part. The avoidance part is arranged on the side of the wire ejecting part away from the inner sleeve, and the avoidance part is arranged in the push rod sliding groove. When the wire ejecting push rod slides forward, the wire ejecting part protrudes into the wire guiding groove.

7. The steel bar bundling machine according to claim 6, characterized in that: The distance between the wire ejecting part and the wire supporting convex block is 0.5 to 4 mm.

8. The steel bar bundling machine according to claim 6, characterized in that: The other end of the wire ejecting push rod relative to the ejecting end is the first connection end. A linkage component is arranged between the wire ejecting push rod and the inner sleeve. One end of the linkage component is connected to the first connection end, and the other end of the linkage component is sleeved on the outer side wall of the inner sleeve and can move in linkage with the outer side wall of the inner sleeve or rotate relative to the outer side wall of the inner sleeve.

9. The steel bar bundling machine according to claim 8, wherein: The linkage component includes a linkage rod and a linkage plate. The two ends of the linkage rod are respectively the second connection end and the third connection end. The second connection end is hinged to the first connection end, and the third connection end is fixedly connected to the linkage plate. The linkage plate is sleeved on the outer side wall of the inner sleeve.

10. The steel bar bundling machine according to claim 9, characterized in that: A clamping block is arranged on the linkage plate, and a first connection hole for cooperating with the clamping block is arranged at the third connection end.

11. The steel bar bundling machine according to claim 10, wherein: The wire ejecting push rod, the linkage rod and the clamping block are located on the same horizontal plane.

12. The steel bar bundling machine according to claim 9, wherein: A first sliding groove is arranged on the forming plate. The first sliding groove communicates with the push rod sliding groove and is opposite to the rear end of the push rod sliding groove. The first connection end and the second connection end are connected in the first sliding groove and can slide forward and backward in the first sliding groove.

13. The steel bar bundling machine according to claim 9, characterized in that: It further includes a support, a support rod is arranged on the support, and a second connection hole for cooperating with the support rod is arranged on the linkage plate.

14. The steel bar bundling machine according to any one of claims 1-13, characterized in that: The wire supporting convex block is detachably connected to the forming plate or integrally formed.

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