Automatic feeding device of steel bar shearing machine

By designing an automatic feeding device, the feeding roller set and the deflector are automatically aligned with the steel bars to enter the cutting machine, and the cutting is completed with the directional guide rail, which solves the problem of high-strength manual operation in the existing technology and improves the efficiency and stability of the steel bars cutting .

CN222153772UActive Publication Date: 2024-12-13YANKUANG ENERGY GRP CO LTD
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Patent Information

Application Number
CN202420770479.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-15
Publication Date
2024-12-13
Estimated Expiration
2034-04-15

AI Technical Summary

Technical Problem

The existing steel bar cutting process requires manual high-strength operation and labor-intensive, and the inlet and outlet of the steel bar cutting machine is not designed to be automatic feeding, resulting in low cutting efficiency.

Method used

An automatic feeding device for steel bar cutting machine is designed to transport the steel bars to be cut one by one through the feed roller group, and the inclined deflector is used to guide the ends of the steel bars to be aligned with the cutting machine entrance, and the falling of the steel bars after cutting is completed with the directional guide rails.

Benefits of technology

The automation of steel bar cutting is realized, the labor intensity is reduced, the cutting efficiency and stability is improved, and the error risk of manual operation is reduced.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic feeding device of a steel bar cut-off machine, which comprises a feeding carrier roller group, a guide groove and a directional guide rail, and the directional guide rail is positioned at an outlet of the steel bar cut-off machine and is used for bearing steel bars. According to the scheme, a plurality of steel bars to be cut are stacked at the placing positions, the steel bars to be cut are conveyed one by one through the feeding carrier roller set, and after the ends of the steel bars to be cut enter the guide groove, the steel bars to be cut gradually get close to an inlet of the steel bar cutting machine under the action of the inclined guide plate; and the to-be-cut reinforcing steel bars conveyed by the feeding carrier roller group are received by the directional guide rail after leaving the reinforcing steel bar cut-off machine, and fall down from the directional guide rail after being cut off by the reinforcing steel bar cut-off machine, so that the cutting of the to-be-cut reinforcing steel bars is completed.
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Description

Technical Field

[0001] The utility model relates to the technical field of steel bar processing, in particular to an automatic feeding device of a steel bar cutting machine. Background Art

[0002] In the existing steel bar cutting process, it is necessary to manually align the steel bars one by one with the entrance of the steel bar cutting machine, and after one end of the steel bar is extended to a suitable length from the outlet of the steel bar cutting machine, the steel bar cutting machine is started for cutting, and the steel bars of the required length are disconnected from the outlet of the steel bar cutting machine to complete the cutting. The process of feeding the steel bars to be cut into the steel bar cutting machine is labor-intensive. Utility Model Content

[0003] In view of this, the utility model provides an automatic feeding device for a steel bar cutting machine, which can stack multiple steel bars to be cut in a placement position, and transmit the steel bars to be cut one by one through a feeding roller group. After the ends of the steel bars to be cut enter the guide groove, they gradually approach the entrance of the steel bar cutting machine under the action of the inclined guide plate, and align with the entrance of the steel bar cutting and enter it as the feeding roller group continues to feed. The steel bars to be cut transmitted by the feeding roller group are received by the directional guide rail after leaving the steel bar cutting machine, and fall from the directional guide rail after being cut by the steel bar cutting machine, thereby completing the cutting of the steel bars to be cut.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An automatic feeding device for a steel bar cutting machine, comprising:

[0006] A feeding roller group, comprising an active roller for conveying the steel bar in a first direction, the active roller having a positioning groove for accommodating at least a part of the side wall of the steel bar, and one side of the feeding roller group having a placement position for carrying the steel bar;

[0007] A guide groove is located between the feeding roller group and the steel bar cutting machine, the guide groove has a feed port and a discharge port, the feed port is wider than the discharge port, and a guide plate is provided between the feed port and the discharge port, the guide plate being arranged at an angle with the first direction and used for guiding the end of the steel bar to slide to the discharge port;

[0008] A directional guide rail is located at the outlet of the steel bar cutting machine and is used for carrying steel bars.

[0009] Preferably, the feeding roller group further includes a driven roller for carrying the steel bars, and the driven roller is lower than the driving roller.

[0010] Preferably, the guide plate at the discharge port is used to be bent and inserted into the inlet of the steel bar cutting machine.

[0011] Preferably, the side wall of the guide groove at the feed inlet is inclined toward one side of the guide plate.

[0012] Preferably, the directional guide rail has a baffle for covering at least part of the steel bars in the vertical direction and the horizontal direction, and a discharge channel for allowing the steel bars to escape from the directional guide rail is provided between the baffle and the directional guide rail.

[0013] Preferably, the directional guide rail has a guide roller for carrying and conveying the steel bars along the first direction.

[0014] Preferably, a limiting groove for accommodating part of the steel bars is provided between the guide roller and the side wall of the directional guide rail.

[0015] Preferably, the guide roller slides relatively with the directional guide rail along its own axial direction, and an adjusting gasket for enlarging / reducing the width of the limiting groove is provided on the rotating shaft of the guide roller.

[0016] Preferably, a travel switch is further included, wherein the travel switch is fixed with a buffer assembly for abutting the end of the steel bar, the buffer assembly includes a buffer plate for sliding from a first position to a second position, and an elastic member for moving the buffer plate from the second position to the first position, and when the buffer plate moves to the second position, the travel switch is closed.

[0017] It can be seen from the above technical scheme that the utility model provides an automatic feeding device for a steel bar cutting machine, which stacks multiple steel bars to be cut in a placement position, and transmits the steel bars to be cut one by one through a feeding roller group. After the ends of the steel bars to be cut enter the guide groove, they gradually approach the entrance of the steel bar cutting machine under the action of the inclined guide plate, and align with the entrance of the steel bar cutting machine and enter it as the feeding roller group continues to feed. The steel bars to be cut transmitted by the feeding roller group are received by the directional guide rail after leaving the steel bar cutting machine, and fall from the directional guide rail after being cut by the steel bar cutting machine, thereby completing the cutting of the steel bars to be cut. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a schematic diagram showing the structure of an automatic feeding device of a steel bar cutting machine according to an exemplary embodiment;

[0020] Figure 2is a schematic diagram showing the structure of a feeding roller group according to an exemplary embodiment;

[0021] Figure 3 According to an exemplary embodiment Figure 2 The middle is an enlarged view of part A showing the positioning groove structure;

[0022] Figure 4 is a schematic diagram showing a guide plate structure according to an exemplary embodiment;

[0023] Figure 5 is a schematic diagram showing a directional guide rail structure according to an exemplary embodiment;

[0024] Figure 6 According to an exemplary embodiment, Figure 5 Schematic diagram showing the guide roller structure;

[0025] Figure 7 is a schematic diagram showing the structure of a buffer component according to an exemplary embodiment.

[0026] Reference numerals:

[0027] 1. Feed roller group; 11. Active roller; 111. Positioning groove; 12. Driven roller; 121. Positioning plate; 122. Positioning block; 13. Frame; 14. Placement position; 15. Feeding port; 17. Slide; 2. Guide groove; 21. First avoidance groove; 22. Second avoidance groove; 23. Feeding port; 24. Discharging port; 25. Guide plate; 3. Directional guide rail; 31. Baffle; 32. Discharging channel; 33. Guide roller; 34. Gasket; 35. Limiting groove; 36. Feeding port; 4. Rebar cutting machine; 5. Travel switch; 6. Buffer assembly; 61. Elastic member; 62. Buffer plate. DETAILED DESCRIPTION

[0028] The utility model discloses an automatic feeding device for a steel bar cutting machine, which can stack a plurality of steel bars to be cut at a placement position, and transmit the steel bars to be cut one by one through a feeding roller group. After the ends of the steel bars to be cut enter the interior of a guide groove, they gradually approach the entrance of the steel bar cutting machine under the action of an inclined guide plate, and align with the entrance of the steel bar cutting machine and enter the entrance as the feeding roller group continuously feeds, and the steel bars to be cut transmitted by the feeding roller group are received by a directional guide rail after leaving the steel bar cutting machine, and fall from the directional guide rail after being cut by the steel bar cutting machine, thereby completing the cutting of the steel bars to be cut.

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In an exemplary embodiment of the present disclosure, an automatic feeding device for a steel bar cutting machine is provided. Figure 1 As shown, Figure 1 is a schematic diagram showing the structure of an automatic feeding device of a steel bar cutting machine according to an exemplary embodiment; Figure 2 is a schematic diagram showing the structure of a feeding roller group according to an exemplary embodiment; Figure 3 According to an exemplary embodiment Figure 2 The middle is an enlarged view of part A showing the positioning groove structure; Figure 4 is a schematic diagram showing a guide plate structure according to an exemplary embodiment; Figure 5 is a schematic diagram showing a directional guide rail structure according to an exemplary embodiment; Figure 6 According to an exemplary embodiment, Figure 5 Schematic diagram showing the guide roller structure; Figure 7 FIG. 1 is a schematic diagram showing a structure of a buffer component according to an exemplary embodiment. Figures 1 to 7 Provide explanation.

[0031] Some specific implementation modes described below are intended to facilitate those skilled in the art to understand the present embodiment, and the present embodiment is not limited to some specific implementation modes described below.

[0032] Reference Figure 1 and Figure 2 An exemplary embodiment of the present disclosure provides an automatic feeding device for a steel bar cutting machine, and the automatic feeding device for a steel bar cutting machine includes:

[0033] The feeding roller assembly 1 comprises an active roller 11 for conveying steel bars in a first direction, the active roller 11 has a positioning groove 111 for accommodating at least part of the side wall of the steel bars, and one side of the feeding roller assembly 1 has a placement position 14 for carrying the steel bars;

[0034] The guide groove 2 is located between the feeding roller group 1 and the steel bar cutting machine 4. The guide groove 2 has a feed port 23 and a discharge port 24. The feed port 23 is wider than the discharge port 24. There is a guide plate 25 between the feed port 23 and the discharge port 24, which is set at an angle with the first direction and is used to guide the end of the steel bar to slide to the discharge port 24.

[0035] The directional guide rail 3 is located at the exit of the steel bar cutting machine 4 and is used to carry the steel bars.

[0036] For example, refer to Figure 1 and Figure 3 , the first direction is the X direction shown in the figure, which is the direction from the feeding roller group 1 to the steel bar cutting machine 4. A frame 13 is erected on the entrance side of the steel bar cutting, and the end of the frame 13 facing the steel bar cutting machine 4 is a feeding port 15, and the steel bar to be cut moves from the feeding port 15 to the inside of the steel bar cutting machine 4. The active roller 11 and the driven roller 12 are both rotatably connected to the same frame 13, and each active roller 11 has a driven roller 12 on the side close to the steel bar cutting machine 4. The rotation axis of the active roller 11 and the rotation axis of the driven roller 12 are parallel, and the two ends of the active roller 11 are respectively flush with the two ends of the driven roller 12 in the first direction, and the top side of the arc-shaped side wall of the driven roller 12 is lower than the top side of the arc-shaped side wall of the active roller 11, and higher than the inner bottom surface of the frame 13. The active roller 11 is used to provide power for the steel bar to move along the first direction. The driven roller 12 is used to support the end of the steel bar falling from the active roller 11, and reduce the friction force that hinders the movement of the steel bar caused by the sliding friction formed by the direct contact between the steel bar and the frame 13. The active roller 11 has a plurality of positioning grooves 111, which are annularly arranged around the arc-shaped side wall of the active roller 11 and are spaced apart along the axis direction of the active roller 11. The placement position 14 is located on one side of the frame 13, for example, a plurality of I-beams spaced apart along a first direction are welded on the side wall of the frame 13 for stacking the steel bars to be cut.

[0037] Reference Figure 1 and Figure 4The feed port 23 of the guide groove 2 is flush with and fits with the discharge port 15 of the frame 13, and the discharge port 24 of the guide groove 2 is flush with and fits with the entrance of the steel bar cutting machine 4. The guide groove 2 has two side walls, and one side wall of the guide groove 2 extends from the edge of the discharge port 15 of the frame 13 along the first direction to the entrance edge of the steel bar cutting machine 4. The inner wall of this side wall of the guide groove 2 is flush with the edge of the feeding roller group 1 and the inner wall of the entrance of the steel bar cutting machine 4; the guide plate 25 forms the other side wall of the guide groove 2, and one end of the guide plate 25 extends from the other side edge of the discharge port 15 of the frame 13 to the other side edge of the entrance of the steel bar cutting machine 4. Since the entrance width of the steel bar cutting machine 4 is smaller than the width of the discharge port 15 of the frame 13, the guide plate 25 is in a horizontal position with an angle to the first direction. After the steel bar transported by the feeding roller group 1 on the frame 13 enters the guide groove 2, the end of the steel bar facing the steel bar cutting machine 4 abuts the guide plate 25, and approaches the other side wall of the guide groove 2 under the limiting and guiding action of the horizontally placed and inclined guide plate 25, until the steel bar is transported to the entrance of the steel bar cutting machine 4 by the feeding roller group 1, and this end of the steel bar is aligned with the entrance of the steel bar cutting machine 4, and moves out from the outlet of the steel bar cutting machine 4 under the action of continuous feeding by the feeding roller group 1, and falls on the directional guide rail 3 located on the other side of the steel bar cutting machine 4.

[0038] In this embodiment, a plurality of steel bars to be cut are stacked at the placement position 14, and the steel bars to be cut are transmitted one by one by the feeding roller group 1. After the ends of the steel bars to be cut enter the guide groove 2, they gradually approach the entrance of the steel bar cutting machine 4 under the action of the inclined guide plate 25, and are aligned with the entrance of the steel bar cutting machine and enter it as the feeding roller group 1 continues to feed. The steel bars to be cut transmitted by the feeding roller group 1 are received by the directional guide rail 3 after leaving the steel bar cutting machine 4, and fall from the directional guide rail 3 after being cut by the steel bar cutting machine 4, thereby completing the cutting of the steel bars to be cut.

[0039] In other embodiments, reference Figure 1 and Figure 3 The power input device of the active roller 11 can be a motor fixedly connected to the side wall of the frame 13, and a vertical slide rail 17 is fixedly connected to the inner wall of the frame 13. The end of the rotating shaft of the driven roller 12 is rotatably connected to a positioning block 122, and the positioning block 122 is a cubic structure. The two opposite side walls of the positioning block 122 are fixedly connected with vertically arranged positioning plates 121 parallel to the first direction. A slideway for accommodating the positioning block 122 and the positioning plate 121 is opened inside the slide rail 17. The driven roller 12 is inserted into the slide rail 17 from the top end of the slide rail 17, and the height of the driven roller 12 can be changed by changing the slideway depth in the slide rail 17.

[0040] In an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 4The side wall of the guide groove 2 at the feed port 23 is inclined toward the guide plate 25 .

[0041] Exemplarily, the side wall of the guide groove 2 extending in the first direction is bent in the direction of the guide plate 25 to form a first avoidance groove 21, and the first avoidance groove 21 is formed on the outer side of the side wall of the guide groove 2 extending in the first direction at the feed port 23. The steel bars to be cut are stacked at the placement position 14 on one side of the frame 13. The first avoidance groove 21 can reduce the possibility that the end of the steel bar is blocked by the side wall of the guide groove 2 when the steel bar at the placement position 14 moves into the guide groove 2.

[0042] In this embodiment, refer to Figure 1 and Figure 4 The guide plate 25 at the discharge port 24 is used to be bent and inserted into the entrance of the steel bar cutting machine 4. A second avoidance groove 22 is provided on the inner bottom surface of the guide groove 2 at the discharge port 24. The second avoidance groove 22 vertically penetrates the inner bottom surface of the guide groove 2, so that the end of the guide plate 25 of the guide groove 2 at the discharge port 24 can be bent toward the other side of the guide groove 2 or away from the other side of the guide groove 2, that is, the end of the guide plate 25 can be bent to adapt to the steel bar cutting machine 4 with different inlet sizes, and even after the guide plate 25 is bent, the discharge port 24 of the guide groove 2 is extended into the entrance of the steel bar cutting machine 4, thereby improving the stability of steel bar feeding.

[0043] In an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 5 The directional guide rail 3 has a baffle 31 for covering at least part of the steel bars in the vertical direction and the horizontal direction, and a discharge channel 32 for allowing the steel bars to escape from the directional guide rail 3 is provided between the baffle 31 and the directional guide rail 3 .

[0044] For example, refer to Figure 1 and Figure 6One end of the directional guide rail 3 is aligned with and abuts against the outlet of the steel bar cutting machine 4, and this end of the directional guide rail 3 forms a feed port 36. The directional guide rail 3 is, for example, a long straight rod structure with an L-shaped cross section and placed horizontally along the first direction. The directional guide rail 3 with an L-shaped cross section has a solid structure extending along the first direction and in a vertical posture, and has another part of the solid structure located on one side of the aforementioned vertical posture, extending along the first direction and tilted downward. The steel bar to be cut is exposed from the outlet of the steel bar cutting machine 4 and falls on the directional guide rail 3 with a tilted horizontally placed solid structure. The baffle 31 is, for example, a rod structure bent into an L shape, one end of the baffle 31 is fixedly connected to the top of the physical structure of the directional guide rail 3 in a vertical posture, and the other end of the baffle 31 extends to the outside of the physical structure of the directional guide rail 3 in an inclined posture. There are multiple baffles 31 and they are distributed at intervals along the first direction. The discharge channel 32 is formed between the outside of the physical structure of the directional guide rail 3 in an inclined posture and the end of the baffle 31 on one side of the directional guide rail 3. The steel bars that fall on the directional guide rail 3 roll away from the directional guide rail 3 from the discharge channel 32 after being cut off.

[0045] In an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 6 The directional guide rail 3 has a guide roller 33 for carrying and conveying the steel bars along the first direction, and a limiting groove 35 for accommodating part of the steel bars is provided between the guide roller 33 and the side wall of the directional guide rail 3.

[0046] For example, refer to Figure 1 and Figure 6 The rotation axis of the guide roller 33 is perpendicular to the first direction. There is a gap between the guide roller 33 and the side wall of the vertical entity structure of the directional guide rail 3. The limiting groove 35 is formed in this gap. The steel bars falling on the directional guide rail 3 can be clamped in this gap. The end edge of the guide roller 33 abuts against the steel bars to reduce the negative effect of the inclined entity of the directional guide rail 3 on the steel bar support. In addition, after the steel bars are cut, they can roll over the guide roller 33 and roll away from the directional guide rail 3 from the discharge channel 32 under the action of gravity.

[0047] In this embodiment, the guide roller 33 slides relative to the directional guide rail 3 along its own axis direction, that is, the rotating shaft for the guide roller 33 to rotate is fixed to the directional guide rail 3 and penetrates the guide roller 33 along the axis direction of the guide roller 33, and the length of the rotating shaft is longer than the length of the guide roller 33. The rotating shaft of the guide roller 33 is provided with an adjusting gasket 34 for enlarging / reducing the width of the limiting groove 35. The adjusting gasket 34 is coaxially and detachably sleeved on the rotating shaft of the guide roller 33 and is located outside the end surface of the guide roller 33. For example, the adjusting gasket 34 can be a block or sheet made of rubber material with an opening, which can be disassembled and assembled on the rotating shaft of the guide roller 33 by twisting. By increasing, reducing or changing the position of the adjusting gasket 34 relative to the guide roller 33, the width of the limiting groove 35 is changed to be suitable for steel bars of different sizes, so that the guide roller 33 can provide effective support for the steel bars and enable the cut steel bars to turn over the guide roller 33 under the action of gravity and escape from the directional guide rail 3 from the discharge channel 32.

[0048] In an exemplary embodiment of the present disclosure, referring to Figure 1 and Figure 7 , and also includes a travel switch 5, which is fixed with a buffer component 6 for abutting the end of the steel bar, the buffer component 6 is used for sliding a buffer plate 62 from a first position to a second position, and an elastic member 61 for moving the buffer plate 62 from the second position to the first position. When the buffer plate 62 moves to the second position, the travel switch 5 is closed.

[0049] For example, refer to Figure 1 and Figure 7 The travel switch 5 is fixed to the outer side of the end of the directional guide rail 3 away from the steel bar cutting machine 4 and is facing the solid part of the directional guide rail 3 in an inclined posture. There are four elastic members 61 and they are spaced around the travel switch 5. The elastic members 61 are springs. The elastic members 61 are arranged along the first direction. The buffer plate 62 is vertically fixedly connected to the ends of the four elastic members 61 facing the directional guide rail 3 and is also fixedly connected to the four elastic members 61. The travel switch 5 can be electrically connected to the feeding roller group 1. For example, the steel bar to be cut moves along the length direction of the directional guide rail 3 under the transportation of the feeding roller group 1. After the end of the steel bar to be cut abuts the buffer plate 62, the moving speed of the steel bar to be cut is gradually reduced under the action of the elastic member 61. When the buffer plate 62 abuts the travel switch 5, the travel switch 5 controls the feeding roller group 1 to stop, and the steel bar to be cut remains in the current position and is cut. After the cut steel bar is separated from the directional guide rail 3, the buffer plate 62 is reset under the action of the elastic member 61, and the travel switch 5 controls the feeding roller group 1 to start, and the cutting process of the next steel bar to be cut continues.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic feeding device for a steel bar cutting machine, characterized in that: include: A feeding roller assembly (1) comprising an active roller (11) for conveying the steel bar in a first direction, the active roller (11) having a positioning groove (111) for accommodating at least a portion of a side wall of the steel bar, and one side of the feeding roller assembly (1) having a placement position (14) for carrying the steel bar; A guide groove (2) located between the feeding roller group (1) and the steel bar cutting machine (4), the guide groove (2) having a feed port (23) and a discharge port (24), the feed port (23) being wider than the discharge port (24), and a guide plate (25) being arranged at an angle with the first direction and used to guide the end of the steel bar to slide to the discharge port (24) between the feed port (23) and the discharge port (24); A directional guide rail (3) is located at the outlet of the steel bar cutting machine (4) and is used to carry the steel bars.

2. The automatic feeding device for a steel bar cutting machine according to claim 1, characterized in that: The feeding roller assembly (1) further comprises a driven roller (12) for carrying the steel bars, wherein the driven roller (12) is lower than the driving roller (11).

3. The automatic feeding device for a steel bar cutting machine according to claim 1, characterized in that: The guide plate (25) at the discharge port (24) is used to be bent and then inserted into the inlet of the steel bar cutting machine (4).

4. The automatic feeding device for a steel bar cutting machine according to claim 1, characterized in that: The side wall of the guide groove (2) at the feed inlet (23) is inclined toward the guide plate (25).

5. The automatic feeding device for a steel bar cutting machine according to claim 1, characterized in that: The directional guide rail (3) has a baffle (31) for covering at least part of the steel bars in the vertical direction and the horizontal direction, and a discharge channel (32) for allowing the steel bars to escape from the directional guide rail (3) is provided between the baffle (31) and the directional guide rail (3).

6. The automatic feeding device for a steel bar cutting machine according to claim 5, characterized in that: The directional guide rail (3) is provided with a guide roller (33) for carrying and conveying the steel bar along the first direction.

7. The automatic feeding device for a steel bar cutting machine according to claim 6, characterized in that: A limiting groove (35) for accommodating a portion of the steel bars is provided between the guide roller (33) and the side wall of the directional guide rail (3).

8. The automatic feeding device for a steel bar cutting machine according to claim 7, characterized in that: The guide roller (33) slides relative to the directional guide rail (3) along its own axial direction, and an adjusting gasket (34) for enlarging / reducing the width of the limiting groove (35) is provided on the rotating shaft of the guide roller (33).

9. The automatic feeding device of a steel bar cutting machine according to claim 1, characterized in that: The travel switch (5) is also comprised of a buffer assembly (6) fixed to the travel switch (5) for abutting against the end of the steel bar, the buffer assembly (6) comprising a buffer plate (62) for sliding from a first position to a second position, and an elastic member (61) for moving the buffer plate (62) from the second position to the first position, and when the buffer plate (62) moves to the second position, the travel switch (5) is closed.