Automatic steel rotating and conveying system of roller way before rough rolling

Abstract

The utility model discloses an automatic steel transfer conveying system of a roller bed before rough rolling, which comprises a rack and a rotary roller bed group, a motor group is arranged outside one side of the rack, and a cleaning component is arranged below the bottom of the rack and at a position corresponding to the rotary roller bed group. According to the utility model, through the three groups of motors in the motor group, the three No.1 motors control the three No.1 rotary rollers to rotate forwards, and the three No.2 motors control the three No.2 rotary rollers to rotate backwards and then rotate forwards, the combined motion mode can utilize the special structures and different rotation directions of the rotary rollers, so that the rotation efficiency is improved; compared with the prior art, the steel rotating device has the advantages that hot billet steel can quickly and accurately rotate by 90 degrees on the rotating roller way, steel rotating time is greatly shortened, the production rhythm is improved, and the first infrared sensor, the second infrared sensor and the third infrared sensor arranged above the rack can detect the position and the state of a slab.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical equipment field, concretely relates to a rough rolling front roller automatic transfer conveying system. BACKGROUND

[0002] In the 3.5-meter line production process, according to the slab size specification, the slab needs to be transferred (slab rotation 90°) in the rough rolling stage, and then is rolled, after the current slab rolling ends, the next slab enters the rough rolling entrance rotary roller to be transferred, and then is rolled after the push bed centering, to circulate like this. Each transfer needs to waste 15 seconds, which has a great influence on the production rhythm.

[0003] Because the rotary roller conveys the steel just after heating, and the surfaces of the multiple transmission rollers in the existing rotary roller are smooth planes, the friction between the smooth plane and the hot blank steel is small, and it is difficult to accurately control the rotation angle of the steel in the steel transfer process. The smaller friction makes the driving force of the transmission roller to the hot blank steel limited, and the rotation speed of the steel is slow, increasing the time cost of the steel transfer.

[0004] Therefore, it is necessary to invent a rough rolling front roller automatic transfer conveying system to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing a rough rolling front roller automatic transfer conveying system to solve the above problems in the art.

[0006] In order to realize the above purpose, the utility model provides the following technical scheme: a rough rolling front roller automatic transfer conveying system, including frame and rotary roller group, the outside of one side of frame is provided with motor group, the bottom below frame, and with the corresponding position of rotary roller group is provided with cleaning assembly;

[0007] The rotary roller group includes three first rotary rollers and three second rotary rollers, and the single first rotary roller and the single second rotary roller in the rotary roller group are staggered.

[0008] The cleaning assembly includes:

[0009] The bottom plate is arranged below the bottom of the rotary roller group, a plurality of steel wire brushes are arranged above the bottom plate, a plurality of steel wire brushes are fixedly installed on the bottom plate at equal intervals, and each steel wire brush corresponds to a first rotary roller or a second rotary roller.

[0010] A plurality of tee joints are arranged between every two steel wire brushes, and a sliding mechanism is arranged below the bottom plate.

[0011] The upper side of the frame is sequentially provided with a first infrared sensor, a second infrared sensor and a third infrared sensor.

[0012] The rough rolling front roller automatic transfer system according to the claim is characterized in that a first conveying roller set is arranged at the front end of the frame, a second conveying roller set is arranged at the tail end of the frame, and the rotary roller set is located between the first conveying roller set and the second conveying roller set.

[0013] As a preferred scheme of the utility model, the motor group is composed of three first motors, three second motors and a plurality of third motors, the output ends of the three first motors are connected with the one end shaft rods of the three first rotary rollers respectively, the output ends of the three second motors are connected with the one ends of the three second rotary rollers respectively, and the output ends of the plurality of third motors are connected with the one end shaft rods of the conveying rollers in the first conveying roller set and the second conveying roller set respectively.

[0014] As a preferred scheme of the utility model, the three first motors control the forward rotation of the three first rotary rollers, the three second motors control the reverse rotation and then the forward rotation of the three second rotary rollers, and the plurality of third motors control the forward rotation of the conveying rollers in the first conveying roller set and the second conveying roller set.

[0015] As a preferred scheme of the utility model, the motor group is connected with the control box through wires, and the control box is internally provided with a contactor, a forward and reverse rotation contactor, a circuit breaker and a single-chip microcomputer, and the first infrared sensor, the second infrared sensor and the third infrared sensor are electrically connected with the control box through wires.

[0016] As a preferred scheme of the utility model, the opposite symmetrical two ends of the three-way joint are both provided with dust removal nozzles, the dust removal nozzles at the two ends of the three-way joint correspond to the steel wire brushes on the two sides, and the middle part joint of the three-way joint is connected with the air pump through the air pipe.

[0017] As a preferred scheme of the utility model, the sliding mechanism comprises two support frames, the two support frames are fixedly installed on the ground, the upper surfaces of the two support frames are both fixedly provided with linear guides, the two linear guides are both slidably provided with sliding blocks, and the bottom ends of the bottom plate are fixedly connected with the two sliding blocks.

[0018] As a preferred scheme of the utility model, the surfaces of the first rotary roller and the second rotary roller are both provided with a plurality of uniformly distributed grooves, the first rotary roller and the second rotary roller are thick at one end and thin at the other end, the one end of the first rotary roller and the second rotary roller close to the motor group is the transmission side, the transmission side of the first rotary roller is thin, and the transmission side of the second rotary roller is thick.

[0019] As a preferred scheme of the utility model, the second infrared sensor is fixedly installed on one side above the rack and is located between the first rotary roller and the second rotary roller at the front of the rotary roller group, and the third infrared sensor is fixedly installed on one side above the rack and is located between the first rotary roller and the second rotary roller at the rear of the rotary roller group.

[0020] In the above technical scheme, the utility model provides technical effects and advantages:

[0021] Through the three groups of motors in the motor set, three first motors control the rotation of the three first rotary rollers, and three second motors control the reverse rotation and then the rotation of the three second rotary rollers, and this combined movement mode can utilize the special structure of the rotary roller and the different rotation directions to realize the rapid and accurate 90° rotation of the hot blank steel on the rotary roller, greatly reduces the steel rotation time and improves the production rhythm compared with the previous steel rotation mode, and the first infrared sensor, the second infrared sensor and the third infrared sensor arranged above the rack can detect the position and state of the slab.

[0022] Through the plurality of evenly distributed grooves formed on the surfaces of the first rotary roller and the second rotary roller in the rotary roller group, the friction between the hot blank steel and the rotary roller is increased, which helps to better drive the rotation of the steel during the steel rotation process, and the plurality of equidistant steel wire brushes arranged on the bottom plate in the cleaning assembly can correspond to a first rotary roller or a second rotary roller, so that the rotary roller can be cleaned during the operation of the equipment to remove the impurities and scales on the surface of the rotary roller and the grooves, thereby preventing the influence of the contact between the steel and the roller and the steel rotation effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments or prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0024] Figure 1 It is the first perspective view of the overall structure of the utility model;

[0025] Figure 2 It is the second perspective view of the overall structure of the utility model;

[0026] Figure 3 It is the explosion view of the overall structure of the utility model;

[0027] Figure 4 It is the connection view of the sliding mechanism and the cleaning assembly of the utility model;

[0028] Figure 5This is a top view of the rotary roller conveyor assembly of this utility model;

[0029] Figure 6 This utility model Figure 2 Enlarged view of area A;

[0030] Figure 7 This is a flowchart of the control system for motor No. 1 of this utility model;

[0031] Figure 8 This is a flowchart of the control system for the No. 2 motor of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Frame; 11. Infrared sensor No. 1; 13. Sensor No. 2; 14. Sensor No. 3;

[0034] 2. First conveyor track group;

[0035] 3. Second transfer track group;

[0036] 4. Rotary track assembly; 41. Rotary roller No. 1; 42. Rotary roller No. 2; 43. Groove;

[0037] 5. Sliding mechanism; 51. Support frame; 52. Linear guide rail; 53. Slider;

[0038] 6. Cleaning components; 61. Base plate; 62. Wire brush; 63. Dust removal nozzle;

[0039] 7. Motor set; 71. Motor No. 1; 72. Motor No. 2; 73. Motor No. 3. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0041] This utility model provides, for example Figures 1-8 The automatic steel transfer conveying system shown includes a frame 1 and a rotary roller conveyor group 4. A motor group 7 is installed on the outside of one side of the frame 1, and a cleaning component 6 is installed at the bottom of the frame 1 and at the corresponding position of the rotary roller conveyor group 4.

[0042] The rotary roller conveyor group 4 includes three first rotary rollers 41 and three second rotary rollers 42, with individual first rotary rollers 41 and individual second rotary rollers 42 arranged alternately in the rotary roller conveyor group 4;

[0043] In the present example, the rack 1 serves as the support frame of the entire system and provides a mounting base for other components. The three first rotary rollers 41 and three second rotary rollers 42 are arranged in a staggered manner and cooperate with the control of the motor set 7 to realize the automatic turning function of the slab. The first rotary rollers 41 and the second rotary rollers 42 rotate in different directions, i.e., the first rotary rollers 41 rotate forward, and the second rotary rollers 42 first rotate reversely, thereby realizing the turning of the slab, allowing the slab to rotate smoothly by 90° on the roller way, and then the first rotary rollers 41 rotate forward and the second rotary rollers 42 rotate forward again, so that the rotary roller way group 4 can perform subsequent conveying to transport the turned slab to the second conveying roller way group 3, thereby completing the subsequent conveying of the slab. Compared with the traditional turning method, the turning efficiency is improved, the turning time is reduced, and the production rhythm is accelerated.

[0044] The cleaning assembly 6 comprises:

[0045] A bottom plate 61 is arranged below the bottom of the rotary roller way group 4, and a plurality of steel wire brushes 62 are arranged above the bottom plate 61, the plurality of steel wire brushes 62 are fixedly installed on the bottom plate 61 at equal intervals, and each steel wire brush 62 corresponds to a first rotary roller 41 or a second rotary roller 42;

[0046] A plurality of tee joints 63 are arranged between every two steel wire brushes 62, and a sliding mechanism 5 is arranged below the bottom plate 61;

[0047] In the present example, the bottom plate 61 provides a mounting platform for the steel wire brushes 62 and other components, the plurality of steel wire brushes 62 are fixedly installed on the bottom plate 61 at equal intervals, and each steel wire brush 62 corresponds to a first rotary roller 41 or a second rotary roller 42, so that the plurality of steel wire brushes 62 can clean the foreign matters and scales in the surface and grooves 43 of the first rotary rollers 41 and the second rotary rollers 42 in time during the operation of the rotary roller way group 4, preventing the foreign matters from affecting the contact between the steel and the roller way and the turning effect, ensuring the cleanliness of the rotary roller way, and prolonging the service life of the roller way.

[0048] On the upper side of the rack 1, a first infrared sensor 11, a second infrared sensor 12, and a third infrared sensor 13 are arranged in sequence.

[0049] In the present example, the first infrared sensor 11 is used to detect whether the slab enters the first conveying roller way group 2. The second infrared sensor 12 is used to detect whether the slab enters the front end of the rotary roller way group 4. The third infrared sensor 13 is used to detect whether the slab enters the rear end of the rotary roller way group 4. The first infrared sensor 11 and the second infrared sensor 12 provide forward rotation start signals for the first motor 71 and the second motor 72, and the third infrared sensor 13 provides a reverse rotation signal for the second motor 72.

[0050] Further, in the above technical solution, the front end of the rack 1 is provided with a first conveying roller group 2, the tail end of the rack 1 is provided with a second conveying roller group 3, and the rotary roller group 4 is located between the first conveying roller group 2 and the second conveying roller group 3. The first infrared sensor 11 is fixedly installed on one side above the rack 1 and corresponds to the position of the first conveying roller group 2.

[0051] Further, in the above technical solution, the motor group 7 is composed of three first motors 71, three second motors 72 and a plurality of third motors 73. The output ends of the three first motors 71 are respectively connected to one end shafts of the three first rotary rollers 41. The output ends of the three second motors 72 are respectively connected to one ends of the three second rotary rollers 42. The output ends of the plurality of third motors 73 are respectively connected to one end shafts of conveying rollers in the first conveying roller group 2 and the second conveying roller group 3.

[0052] In this example, the three first motors 71 control the forward rotation of the three first rotary rollers 41, and the three second motors 72 control the reverse rotation and then the forward rotation of the three second rotary rollers 42, so as to cooperate with the rotation of the first rotary rollers 41, so that the slab can realize 90° rotation, which provides the necessary power for the slab in the process of steel turning and is one of the key power sources for realizing the rotation of the slab on the rotary roller group 4. The plurality of third motors 73 drive the first conveying roller group 2 and the second conveying roller group 3 to rotate forward synchronously, so as to realize the input and output of the slab in the whole conveying device.

[0053] Further, in the above technical solution, the three first motors 71 control the forward rotation of the three first rotary rollers 41, and the three second motors 72 control the reverse rotation and then the forward rotation of the three second rotary rollers 42, so as to cooperate with the rotation of the first rotary rollers 41, so that the slab can realize 90° rotation, which provides the necessary power for the slab in the process of steel turning and is one of the key power sources for realizing the rotation of the slab on the rotary roller group 4. The plurality of third motors 73 drive the first conveying roller group 2 and the second conveying roller group 3 to rotate forward synchronously, so as to realize the input and output of the slab in the whole conveying device.

[0054] Further, in the above technical solution, the motor group 7 is connected to the control box through wires, and the control box is internally provided with a contactor, a forward and reverse rotation contactor, a circuit breaker and a single-chip microcomputer. The first infrared sensor 11, the second infrared sensor 12 and the third infrared sensor 13 are electrically connected to the control box through wires.

[0055] In this example, the first infrared sensor 11 can detect whether the slab enters the first conveying roller group 2, so as to provide a signal for the control system, so that the control system can start the three first motors 71 in the motor group 7 to rotate forward in time. The second infrared sensor 12 is used to detect whether the slab enters the front end of the rotary roller group 4. The second infrared sensor 12 provides a signal for the control system, so that the control system immediately starts the three second motors 72 in the motor group 7 to rotate reversely. The third infrared sensor 13 detects whether the slab has completed steel turning. The third infrared sensor 13 makes the control system immediately stop the three second motors 72 in the motor group 7 and immediately rotate forward.

[0056] Further, in the above technical solution, the three-way joint 63 is provided with dust removal nozzles at two opposite ends, the dust removal nozzles at the two ends of the three-way joint 63 correspond to the steel wire brushes 62 on the two sides, and the middle part of the three-way joint 63 is connected to the air pump through the air pipe.

[0057] In this example, the three-way joint 63 and the dust removal nozzles at the two ends thereof are driven by the air pump, so that the dust removal nozzles can further clean the sundries cleaned by the steel wire brushes 62, improve the cleaning effect, and avoid the accumulation of the sundries in the gap between the bottom plate 61 and the steel wire brushes 62, so that the steel wire brushes 62 can have a good cleaning effect.

[0058] Further, in the above technical solution, the sliding mechanism 5 includes two support frames 51 fixedly installed on the ground, the upper surfaces of the two support frames 51 are fixedly provided with linear guides 52, the two linear guides 52 are slidably provided with sliding blocks 53, and the bottom ends of the bottom plate 61 are fixedly connected to the two sliding blocks 53.

[0059] In this example, the support frames 51 are installed on the ground to provide stable support for the linear guides 52 and other components, ensure the overall stability of the sliding mechanism 5, and enable the sliding mechanism 5 to bear the weight of the cleaning assembly 6 and various forces generated during the sliding process. Through the sliding blocks 53 and the linear guides 52 in the sliding mechanism 5, the bottom plate 61 in the cleaning assembly 6 drives the plurality of steel wire brushes 62 to make reciprocating linear motion under the rotary roller way group 4, facilitating the plurality of steel wire brushes 62 to clean the surfaces and the grooves 43 of each first rotary roller 41 and second rotary roller 42. The installation mode of the cleaning assembly 6 and the sliding mechanism 5 improves the maintainability and flexibility of the equipment, and facilitates the maintenance and replacement of the cleaning assembly 6 when needed.

[0060] Further, in the above technical solution, the surfaces of the first rotary roller 41 and the second rotary roller 42 are provided with a plurality of uniformly distributed grooves 43, the first rotary roller 41 and the second rotary roller 42 are thick at one end and thin at the other end, the end of the first rotary roller 41 and the second rotary roller 42 close to the motor group 7 is the transmission side, the transmission side of the first rotary roller 41 is thin, and the transmission side of the second rotary roller 42 is thick.

[0061] In the present example, the surfaces of the first rotating roller 41 and the three second rotating rollers 42 are provided with a plurality of uniformly distributed grooves 43, which increases the friction between the hot blank steel and the rotating roller way set 4, enhances the driving force of the hot blank steel, and can more accurately control the rotation angle of the steel, avoiding the problems of inaccurate rotation angle and slow rotation speed caused by small friction. The structure design of the first rotating roller 41 and the three second rotating rollers 42, one end thick and one end thin, and the driving side thick and thin, that is, the driving side of the first rotating roller 41 is thin, and the driving side of the second rotating roller 42 is thick, can better contact with the steel during the rotation of the steel, produce different forces, and help to realize the stable rotation and conveying of the slab.

[0062] Further, in the above technical solution, the second infrared sensor 12 is fixedly installed on one side above the rack 1 and located between the first rotating roller 41 and the second rotating roller 42 at the front of the rotating roller way set 4, and the third infrared sensor 13 is fixedly installed on one side above the rack 1 and located between the first rotating roller 41 and the second rotating roller 42 at the rear of the rotating roller way set 4.

[0063] In the present embodiment, the control box is provided with a contactor, a forward and reverse contactor, a circuit breaker and a single-chip microcomputer, and is electrically connected with the motor set 7, the first infrared sensor 11, the second infrared sensor 12 and the third infrared sensor 13 through wires. The control box can control the action of the contactor and the forward and reverse contactor through the single-chip microcomputer according to the signals detected by the three infrared sensors, and then control the start and stop of the three first motors 71 and the start, stop and forward and reverse rotation of the three second motors 72 in the motor set 7. The automation control of the slab conveying and the steel rotation process is realized. At the same time, the circuit breaker plays a role in protecting the circuit, and can automatically cut off the power supply when the circuit appears abnormal conditions such as overload and short circuit, so as to ensure the safety of the equipment and personnel.

[0064] The working process of the rough rolling front roller automatic steel conveying system provided by the utility model is as follows when it is used:

[0065] The slab is conveyed to the first conveying roller way set 2 by the external equipment, a plurality of third motors 73 drive the conveying rollers in the first conveying roller way set 2 to rotate forward, and the slab is stably conveyed to the direction of the rotating roller way set 4. When the front end of the slab reaches the sensing range of the first infrared sensor 11, the first infrared sensor 11 transmits the signal to the single-chip microcomputer in the control box. After receiving the signal, the single-chip microcomputer controls the action of the contactor, starts the three first motors 71, and makes the first rotating roller 41 start rotating forward, so as to prepare for the steel rotation of the slab after entering the rotating roller way set 4.

[0066] The slab continues to move forward, when the second infrared sensor 12 is triggered, the second infrared sensor 12 feeds back a signal to the single-chip microcomputer. The single-chip microcomputer controls the switching of the forward and reverse contactor, starts the three second motors 72, and makes the second rotating roller 42 start to reverse. Since the first rotating roller 41 rotates forward and the second rotating roller 42 rotates reversely, and the two rotating rollers are staggered, under the action of friction, the slab starts to rotate 90° on the rotating roller bed set 4. In the process of rotating the slab, the grooves 43 on the surfaces of the first rotating roller 41 and the second rotating roller 42 increase the friction with the slab, so that the slab can rotate accurately and stably.

[0067] The slab continues to move forward, when the second infrared sensor 12 is triggered, the second infrared sensor 12 feeds back a signal to the single-chip microcomputer. The single-chip microcomputer controls the switching of the forward and reverse contactor, starts the three second motors 72, and makes the second rotating roller 42 start to reverse. Since the first rotating roller 41 rotates forward and the second rotating roller 42 rotates reversely, and the two rotating rollers are staggered, under the action of friction, the slab starts to rotate 90° on the rotating roller bed set 4. In the process of rotating the slab, the grooves 43 on the surfaces of the first rotating roller 41 and the second rotating roller 42 increase the friction with the slab, so that the slab can rotate accurately and stably.

[0068] During the operation of the equipment, the cleaning assembly 6 works automatically. The steel wire brush 62 is driven by the bottom plate 61 to make reciprocating motion on the linear guide rail 52 and the sliding block 53, and cleans the surfaces and the grooves 43 of the first rotating roller 41 and the second rotating roller 42, and removes sundries and scales. At the same time, the dust removal nozzles at both ends of the three-way joint 63 further blow away the sundries removed by the steel wire brush under the action of the air pump, so that the equipment is kept clean. If it is necessary to maintain the cleaning assembly in depth, the two ends of the bottom plate 61 are detached from the corresponding sliding blocks 53, so that the steel wire brush 62 can be maintained.

[0069] The above only describes some exemplary embodiments of the present application in a descriptive manner, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection claimed by the present application.

Claims

1. A roughing front roller automatic transfer bar conveying system comprising a frame (1) and a rotary roller table set (4), characterized in that: The motor set (7) is arranged on one side of the frame (1), and a cleaning assembly (6) is arranged below the bottom of the frame (1) and at the corresponding position of the rotary roller set (4). The rotary roller set (4) comprises three first rotary rollers (41) and three second rotary rollers (42), and the single first rotary roller (41) and the single second rotary roller (42) in the rotary roller set (4) are arranged alternately. The cleaning assembly (6) comprises: a bottom plate (61) arranged below the bottom of the rotary roller set (4), a plurality of steel wire brushes (62) arranged above the bottom plate (61), the plurality of steel wire brushes (62) being fixedly installed on the bottom plate (61) at equal intervals, and each steel wire brush (62) corresponding to a first rotary roller (41) or a second rotary roller (42); a plurality of three-way joints (63) arranged between every two steel wire brushes (62), and a sliding mechanism (5) arranged below the bottom plate (61); a first infrared sensor (11), a second infrared sensor (12) and a third infrared sensor (13) arranged on the upper side of the frame (1) in sequence.

2. A roughing front roller table automatic transfer bar delivery system as claimed in claim 1, characterized in that: The first conveying roller set (2) is arranged at the front end of the frame (1), the second conveying roller set (3) is arranged at the tail end of the frame (1), the rotary roller set (4) is located between the first conveying roller set (2) and the second conveying roller set (3), and the first infrared sensor (11) is fixedly installed on the upper side of the frame (1) and corresponds to the position of the first conveying roller set (2).

3. A roughing front roller table automatic transfer bar delivery system as claimed in claim 2, characterized in that: The motor set (7) comprises three first motors (71), three second motors (72) and a plurality of third motors (73), the output ends of the three first motors (71) are connected with the one end shaft rods of the three first rotary rollers (41) respectively, the output ends of the three second motors (72) are connected with the one ends of the three second rotary rollers (42) respectively, and the output ends of the plurality of third motors (73) are connected with the one end shaft rods of the conveying rollers in the first conveying roller set (2) and the second conveying roller set (3) respectively.

4. A roughing front roll table automatic transfer bar delivery system as claimed in claim 3, characterized in that: The three first motors (71) control the forward rotation of the three first rotary rollers (41), the three second motors (72) control the reverse rotation and then the forward rotation of the three second rotary rollers (42), and the plurality of third motors (73) control the forward rotation of the conveying rollers in the first conveying roller set (2) and the second conveying roller set (3).

5. A roughing front roll table automatic transfer bar delivery system as claimed in claim 2, characterized in that: The motor set (7) is connected with the control box through wires, and the control box is internally provided with a contactor, a forward-reverse rotation contactor, a circuit breaker and a single-chip microcomputer, the first infrared sensor (11), the second infrared sensor (12) and the third infrared sensor (13) are electrically connected with the control box through wires.

6. A roughing front roller table automatic transfer bar delivery system as claimed in claim 1, characterized in that: The dust removal nozzles are arranged on the two symmetrical ends of the three-way joint (63), the dust removal nozzles on the two ends of the three-way joint (63) correspond to the steel wire brushes (62) on the two sides, and the middle joint of the three-way joint (63) is connected with the air pump through an air pipe.

7. A roughing front roller table automatic transfer bar delivery system as claimed in claim 1, characterized in that: The sliding mechanism (5) comprises two support frames (51), the two support frames (51) are fixedly installed on the ground, the upper surfaces of the two support frames (51) are fixedly installed with linear guides (52), the linear guides (52) are slidably installed with sliders (53), and the bottom ends of the bottom plate (61) are fixedly connected with the sliders (53).

8. A roughing front roll table automatic transfer bar delivery system as defined in claim 1 wherein: The surfaces of the first rotary roller (41) and the second rotary roller (42) are provided with a plurality of uniformly distributed grooves (43), the first rotary roller (41) and the second rotary roller (42) are thick at one end and thin at the other end, the ends close to the motor set (7) of the first rotary roller (41) and the second rotary roller (42) are driving sides, the driving side of the first rotary roller (41) is thin, and the driving side of the second rotary roller (42) is thick.

9. A roughing front roll table automatic transfer bar delivery system as defined in claim 1 wherein: The second infrared sensor (12) is fixedly installed on one side above the rack (1) and located between the first rotary roller (41) and the second rotary roller (42) at the front of the rotary roller way set (4), and the third infrared sensor (13) is fixedly installed on one side above the rack (1) and located between the first rotary roller (41) and the second rotary roller (42) at the rear of the rotary roller way set (4).

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