Drum type material sorting device and method

Abstract

The present invention relates to a drum type material discharging and sorting device and method, belonging to the field of material discharging and sorting technology, comprising a material discharging barrel and a transport tube filled with a first bearing and a second bearing, the bottom end side wall of the material discharging barrel is provided with a material discharging port, the material discharging barrel is inclined, the transport tube comprises an input port and an output port, the input port and the material discharging port are connected with each other; the middle end of the transport tube is provided with a material discharging port; it also comprises a first material storage barrel and a second material storage barrel, the first material storage barrel is provided below the material discharging port, and is used to store the first bearing coming out of the material discharging port; the second material storage barrel is provided at the end of the transport tube, and is used to store the second bearing coming out of the output port. In this scheme, a transport tube is provided, and the transport tube is provided with a material discharging port and an output port according to the shape difference of the first bearing and the second bearing, the first bearing can reach the first material storage barrel through the material discharging port; the second bearing can reach the second material storage barrel through the output port, so as to realize the sorting of the first bearing and the second bearing.

Description

Technical Field

[0001] The invention belongs to the technical field of material sorting, and in particular relates to a drum type material sorting device and method. Background Art

[0002] At present, in the process of workpiece production, especially bearing production, due to project needs, it is necessary to produce the first bearing and the second bearing. Here it is briefly explained that the first bearing is composed of a coaxially arranged small cylinder and a large cylinder, and the second bearing is composed of a large cylinder. Due to the particularity of the structure of the first bearing and the second bearing, the first bearing and the second bearing can be produced at one time through the existing device. Its working principle is to form a first bearing by a primary cutting of a steel rod with a coaxially arranged small cylinder and a large cylinder; then the steel rod after the primary cutting is cut for the second time to form a second bearing; based on this, through this processing method, the first bearing and the second bearing can be obtained at the same time, and the existing sorting of the first bearing and the second bearing is achieved by a semi-automatic sorting machine.

[0003] For example, the utility model patent with the patent authorization announcement number: CN209939796U includes a semi-automatic feeding mechanism, which has at least one outlet for workpieces to be sorted; a feeding conveyor line, the number of which is the same as the number of outlets for workpieces to be sorted, and the inlet end of each feeding conveyor line corresponds to an outlet for workpieces to be sorted; a number of manual sorting stations, which are arranged on one side of the feeding conveyor line along the conveying direction of the feeding conveyor line; and a fast discharging conveyor line, which is arranged on the other side of the feeding conveyor line along the conveying direction of the feeding conveyor line. This utility model can improve the sorting efficiency, improve the work intensity, clean the working environment, reduce dust, run the equipment smoothly, reduce noise, make hydraulic turning and unloading of materials easy and convenient, and adjust the feeding and feeding speed, which greatly improves the sorting efficiency.

[0004] Based on the search of the above patent authorization announcement number and the shortcomings found therein:

[0005] The existing sorting of the first bearing and the second bearing is achieved by a semi-automatic sorting machine. This sorting method not only requires a lot of manpower, but also has the possibility of subjective judgment errors in manual sorting. Therefore, the manual sorting of the first bearing and the second bearing may also result in sorting errors. Summary of the invention

[0006] In order to solve the problem that manual sorting of the first bearing and the second bearing is prone to sorting errors, the present invention provides a drum-type material sorting device and method.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A drum type material discharging and sorting device, comprising a discharging drum filled with a first bearing and a second bearing and a transport pipe, wherein the bottom end side wall of the discharging drum is provided with a discharging port, the discharging drum and the transport pipe are both arranged obliquely, the transport pipe comprises an input port and an output port, the input port and the discharging port are connected to each other; and a discharging port is provided at the middle end of the transport pipe;

[0009] It also includes a first storage barrel and a second storage barrel. The first storage barrel is arranged below the discharge port and is used to store the first bearing coming out of the discharge port; the second storage barrel is arranged at the end of the transport tube and is used to store the second bearing coming out of the output port.

[0010] As a preferred technical solution of the present invention, the inner diameter of the transport tube is larger than the maximum diameter of the first bearing and the second bearing, and the transport tube is provided with a movable groove, which is arranged at the bottom of the transport tube along the central axis of the transport tube, and the width of the movable groove is equal to the small tube diameter of the first bearing.

[0011] As a preferred technical solution of the present invention, the transport pipe includes a first material conveying pipe and a second material conveying pipe, one end of the first material conveying pipe is connected to the feed discharge port, the other end of the first material conveying pipe and one end of the second material conveying pipe form the discharge port, and the other end of the second material conveying pipe is the output port;

[0012] The shape of the discharge port projected onto the horizontal plane is a straight slot with semicircular arcs at both ends, the diameter of the semicircular arc of the discharge port is larger than the large cylinder diameter of the first bearing, the width of the straight slot of the discharge port is equal to the diameter of the semicircular arc of the discharge port, and the diameter of the semicircular arc of the discharge port is smaller than the diameter of the inner diameters of the first and second feed pipes.

[0013] As a preferred technical solution of the present invention, it also includes a limit assembly, which includes a rocker, a limit spring, a telescopic block and a pull rope. A telescopic groove is provided at one end of the first feed pipe close to the discharge port, and the axial direction of the telescopic groove coincides with the axial direction of the first feed pipe. The telescopic block slides in the telescopic groove. The rocker is arranged at the bottom of the discharge port. The bottom end of the rocker is hinged to the first feed pipe through a connecting piece, and the top end of the rocker is connected to the telescopic block through a pull rope. The two ends of the limit spring are respectively connected to the first feed pipe and the top end of the rocker. The rocker controls the sliding of the telescopic block at the discharge port by locking or releasing the abutment with the first bearing.

[0014] As a preferred technical solution of the present invention, the telescopic block includes two telescopic rods and a connecting rod arranged in parallel, the two ends of the connecting rod are respectively connected to the telescopic rods, the two telescopic rods are used to lock or release the separation space relationship between them and the discharge port, and the two telescopic rods are projected onto the horizontal plane to separate the discharge port into a first plane, a second plane and a third plane, and the maximum width between the three planes is smaller than the diameter of the second bearing.

[0015] As a preferred technical solution of the present invention, the limit assembly further includes a reset spring, which is arranged in the telescopic groove, and the two ends of the reset spring are respectively connected to the first feeding pipe and the telescopic block.

[0016] As a preferred technical solution of the present invention, the position where the first bearing releases its abutting fit with the rocker is located at the center of the semicircular arc of the discharge port close to the first conveying pipe.

[0017] As a preferred technical solution of the present invention, the time required for the end face of the telescopic block to move to the end of the second conveying pipe close to the discharge port is less than the time required for the second bearing adjacent to it to reach the second conveying pipe when the center of the first bearing reaches the center of the semicircular arc close to the first conveying pipe at the discharge port.

[0018] As a preferred technical solution of the present invention, the bottom surface of the second material conveying pipe coincides with the common tangent surface of the tops of the two telescopic rods.

[0019] A drum type material sorting method comprises the following steps:

[0020] S1: A plurality of first bearings and second bearings are loaded into the lower barrel;

[0021] S2: a vibration component is arranged in the lower barrel, the vibration component is used to implement vibration treatment on the inside of the lower barrel, and the vibration component is used to ensure that a plurality of first bearings and second bearings located in the lower barrel are placed flat against each other;

[0022] S3: A pushing component is arranged at the bottom of the discharge barrel, and the pushing component is arranged at the bottom of the discharge barrel. The material at the bottom is pushed through the discharge port to the transport pipe for automatic sorting by using the pushing component.

[0023] The beneficial effects of the present invention are:

[0024] This solution is provided with a transport tube, and the transport tube is provided with a discharge port and an output port according to the shape difference between the first bearing and the second bearing. The first bearing can reach the first storage barrel through the discharge port; the second bearing can reach the second storage barrel through the output port, thereby realizing the sorting of the first bearing and the second bearing, and solving the problem that the existing sorting of the first bearing and the second bearing is achieved by semi-automatic sorting machines. Such a sorting method not only requires a lot of manpower, but also has the problem of sorting errors due to subjective judgment errors in manual sorting. Therefore, the method of manually sorting the first bearing and the second bearing also has the problem of sorting errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0026] Figure 1 A diagram of a first bearing and a second bearing of a drum-type material sorting device according to the present invention;

[0027] Figure 2 It is a front view of a drum type material sorting device of the present invention;

[0028] Figure 3 A side view of a material discharge drum of a drum type material discharge and sorting device of the present invention;

[0029] Figure 4 This is an overall diagram of a transport pipe of a drum-type material sorting device of the present invention;

[0030] Figure 5 This is a cross-sectional view of the transport tube of a drum-type material sorting device of the present invention;

[0031] Figure 6 This is an overall diagram of the telescopic block of a drum-type material unloading and sorting device of the present invention.

[0032] Description of main symbols

[0033] In the figure: 1. first bearing; 2. second bearing; 3. discharge barrel; 301. discharge port; 4. transport pipe; 401. discharge port; 402. moving slot; 403. first feed pipe; 404. second feed pipe; 5. first storage barrel; 6. second storage barrel; 7. limit assembly; 701. rocker; 702. limit spring; 703. telescopic block; 7031. telescopic rod; 7032. connecting rod; 704. pull rope; 705. reset spring; 8. vibration assembly; 9. pushing assembly. DETAILED DESCRIPTION

[0034] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0035] See also Figure 1-Figure 6 , This embodiment provides a drum type material sorting device. Here, the reason for designing this scheme is briefly described. At present, in the process of workpiece production, especially bearing production, due to the needs of the project, it is necessary to produce the first bearing 1 and the second bearing 2. Here, it is briefly described that the first bearing 1 includes a small cylinder and a large cylinder arranged coaxially, and the second bearing 2 is composed of a large cylinder. Due to the particularity of the structure of the first bearing 1 and the second bearing 2, the first bearing 1 and the second bearing 2 can be produced at one time through the existing device. Its working principle is to form a first bearing 1 by a steel bar with a small cylinder and a large cylinder arranged coaxially; then the steel bar after the initial cutting is cut twice to form a second bearing 2; based on this, through this processing method, the first bearing 1 and the second bearing 2 can be obtained at the same time, and the existing sorting for the first bearing 1 and the second bearing 2 is achieved by a semi-automatic sorting machine, but such a sorting method not only requires a lot of manpower, but also because there are subjective judgment errors in manual sorting, so there are also sorting errors in the manual sorting of the first bearing 1 and the second bearing 2. Based on this, the present application solves the above problems by providing a drum type material sorting device.

[0036] Specifically, a drum type unloading and sorting device includes a unloading barrel 3 and a transport tube 4 filled with a first bearing 1 and a second bearing 2. The bottom end side wall of the unloading barrel 3 is provided with a unloading port 301. The unloading barrel 3 and the transport tube 4 are both inclined. The transport tube 4 includes an input port and an output port, and the input port and the unloading port 301 are connected to each other; the middle end of the transport tube 4 is provided with an output port 401, and also includes a first storage barrel 5 and a second storage barrel 6. The first storage barrel 5 is provided below the output port 401 for storing the first bearing 1 coming out of the output port 401; the second storage barrel 6 is provided at the end of the transport tube 4 for storing the second bearing 2 coming out of the output port. This solution By providing a transport tube 4, the transport tube 4 is provided with a discharge port 401 and an output port according to the shape difference between the first bearing 1 and the second bearing 2. The first bearing 1 can reach the first storage barrel 5 through the discharge port 401; the second bearing 2 can reach the second storage barrel 6 through the output port, thereby realizing the sorting of the first bearing 1 and the second bearing 2, and solving the problem that the existing sorting of the first bearing 1 and the second bearing 2 is achieved by a semi-automatic sorting machine. Such a sorting method not only requires a lot of manpower, but also has the problem of sorting errors due to subjective judgment errors in manual sorting. Therefore, the method of manually sorting the first bearing 1 and the second bearing 2 also has the problem of sorting errors.

[0037] Specifically, the inner diameter of the transport tube 4 of the present scheme is larger than the large cylinder diameter of the first bearing 1 and the second bearing 2, and the transport tube 4 is provided with a movable groove 402, which is arranged at the bottom of the transport tube 4 along the central axis of the transport tube 4, and the width of the movable groove 402 is equal to the small cylinder diameter of the first bearing 1. It is worth noting that the diameter size inside the transport tube 4 of the present scheme is 1.35 times the large cylinder diameter size of the first bearing 1 and the second bearing 2. Such an arrangement facilitates the first bearing 1 and the second bearing 2 to slide along the setting direction of the transport tube 4; and by providing the movable groove 402, on the one hand, by providing the movable groove 402, the second bearing 2 can slide along the setting direction of the movable groove 402 without shaking during the sliding process in the transport tube 4; on the other hand, since the width of the movable groove 402 is equal to the diameter size of the small cylinder of the first bearing 1, when the first bearing 1 slides along the movable groove 402, due to gravity, the small cylinder of the first bearing 1 vertically extends out of the bottom of the transport tube 4.

[0038] In detail, the transport pipe 4 of the present scheme includes a first conveying pipe 403 and a second conveying pipe 404, one end of the first conveying pipe 403 is connected to the discharge port 301, the other end of the first conveying pipe 403 and one end of the second conveying pipe 404 form a discharge port 401, and the other end of the second conveying pipe 404 is an output port; it is worth noting that the shape of the discharge port 401 of the present scheme projected onto the horizontal plane is a straight groove with semicircular arcs at both ends, and the diameter of the semicircular arc of the discharge port 401 is larger than the large cylinder diameter of the first bearing 1. Specifically, the diameter of the semicircular arc of the discharge port 401 of the present scheme is 1.2 times the large cylinder diameter of the first bearing 1, the width of the straight groove of the discharge port 401 is equal to the diameter of the semicircular arc of the discharge port 401, and the diameter of the semicircular arc of the discharge port 401 is smaller than the first conveying pipe 4 03 and the diameter size of the inner diameter of the second material delivery pipe 404; it should be noted that the present scheme is provided with a discharge port 401 in order to ensure that the first bearing 1 can fall into the first material storage tube 5 through the discharge port 401. This is because the first bearing 1 slides vertically in the transport tube 4 along the setting direction of the transport tube 4 due to the movable groove 402. Since the width of the movable groove 402 is equal to the diameter size of the small tube of the first bearing 1, the large tube of the first bearing 1 slides in the first material delivery pipe 403 and has linear friction with the bottom of the first material delivery pipe 403, and the small tube of the first bearing 1 will have surface friction with the movable groove 402 when sliding in the first material delivery pipe 403; and when the second bearing 2 slides in the first material delivery pipe 403, the second bearing 2 only has linear friction with the side wall of the first material delivery pipe 403. Such an arrangement results in that when the first bearing 1 slides to the discharge port 401, the friction between the first bearing 1 and the first feed pipe 403 is too great, resulting in the first bearing 1 not sliding at an adequate speed, causing the first bearing 1 to eventually smoothly fall from the discharge port 401 into the first storage barrel 5; similarly, when the second bearing 2 slides to the discharge port 401, the friction between it and the first feed pipe 403 is too small, causing the second bearing 2 to slide at an excessively fast speed, and eventually the second bearing 2 will directly pass over the discharge port 401 when passing through the discharge port 401, and slide in the direction of the second feed pipe 404, and thus will not fall from the discharge port 401. It should be noted that, in the present embodiment, the first feed pipe 403 and the second feed pipe 404 are not spatially connected. In fact, one end of the second feed pipe 404 close to the first feed pipe 403 is lower than another end of the first feed pipe 403. In this embodiment, the first bearing 1 and the second bearing 2 cannot interfere with each other when sliding. That is, when the discharge barrel 3 discharges the first bearing 1 or the second bearing 2, a certain time interval is required to ensure that the first bearing 1 and the second bearing 2 do not interfere with each other when sliding in the first feed pipe 403, thereby avoiding affecting the sliding speed of the first bearing 1 or the second bearing 2 in the first feed pipe 403.

[0039] In the above scheme, it is necessary to ensure that the first bearing 1 and the second bearing 2 do not contact each other in the first conveying pipe 403. Such a setting will cause the efficiency of the unloading and sorting device to decrease. In order to solve this problem, the present scheme also includes a limit assembly 7, which includes a rocker 701, a limit spring 702, a telescopic block 703 and a pull rope 704. A telescopic groove is provided at one end of the first conveying pipe 403 close to the discharge port 401, and the axial direction of the telescopic groove coincides with the axial direction of the first conveying pipe 403. The telescopic block 703 slides in the telescopic groove. The rocker 701 is arranged at the bottom of the discharge port 401. The bottom end of the rocker 701 is hinged to the first conveying pipe 403 through a connecting piece, and its top end is connected to the telescopic block 703 through a pull rope 704. The two ends of the limit spring 702 are respectively connected to the first conveying pipe 403 and the top of the rocker 701. It should be noted that since the small cylinder of the first bearing 1 extends out of the movable groove 402, when the first bearing 1 slides to During the process of reaching the discharge port 401, the first bearing 1 and the rocker 701 are abutted against each other, and as the first bearing 1 is continuously approached toward the discharge port 401, the rocker 701 will rotate to ensure that the first bearing 1 is always abutted against the rocker 701, until the first bearing 1 reaches the discharge port 401, the first bearing 1 releases its abutting relationship with the rocker 701; since the top of the rocker 701 is connected to the telescopic block 703 by the pull rope 704, the telescopic block 703 slides in the telescopic groove when the rocker 701 rotates; specifically, when the first bearing 1 and the rocker 701 are initially abutted against each other, the telescopic block 703 extends out of the telescopic groove, and the telescopic block 703 is abutted against one end of the second feed pipe 404; as the rocker 701 continuously rotates, the telescopic block 703 moves toward the direction close to the telescopic groove; when the first bearing 1 releases its abutting relationship with the rocker 701, the telescopic block 703 is completely immersed in the telescopic groove.More specifically, the telescopic block 703 of the present invention comprises two parallel telescopic rods 7031 and a connecting rod 7032, the two ends of the connecting rod 7032 are respectively connected to the two telescopic rods 7031, the two telescopic rods 7031 are used to lock or release the separation space relationship between the two telescopic rods 7031 and the discharge port 401, and the two telescopic rods 7031 are projected onto the horizontal plane to separate the discharge port 401 into a first plane, a second plane and a third plane, and the maximum width between the three planes is less than the diameter of the second bearing 2. It can be seen that the telescopic block 703 of the present invention is used to lock or release its With respect to the separation space relationship with the discharge port 401, when the telescopic block 703 is completely immersed in the telescopic groove, the telescopic block 703 releases its separation space relationship with the discharge port 401, so that when the first bearing 1 slides onto the discharge port 401, the first bearing 1 will fall into the first storage barrel 5 through the discharge port 401; when the telescopic block 703 extends out of the telescopic groove, the telescopic block 703 locks its separation space relationship with the discharge port 401, so that when the second bearing 2 slides onto the discharge port 401, the second bearing 2 is prevented from sliding into the first storage barrel 5 through the discharge port 401.

[0040] Furthermore, in the present embodiment, the position where the first bearing 1 releases its abutting fit relationship with the rocker 701 is located at the center of the semicircular arc of the discharge port 401 close to the first feed pipe 403. Such a setting ensures that when the first bearing 1 is located at the center of the semicircular arc of the discharge port 401 close to the first feed pipe 403, since the telescopic block 703 is completely immersed in the telescopic groove at this time, the first bearing 1 will directly pass through the discharge port 401 and fall into the first storage barrel 5; since the limit assembly 7 also includes a reset spring 705, the reset spring 705 is arranged in the telescopic groove, and the two ends of the reset spring 705 are respectively connected to the first feed pipe 403 and the telescopic block 703, so that after the first bearing 1 releases its abutting fit relationship with the rocker 701, the telescopic block 703 will quickly reset due to the reset spring 705, and re-lock its separation space relationship with the discharge port 401. Since the two telescopic rods 7031 are projected onto the horizontal plane to separate the discharge port 401 into the first plane, the second plane and the third plane, and the maximum widths between the three planes are all smaller than the diameter of the second bearing 2, the second bearing 2 adjacent to the first bearing 1 cannot reach the first storage barrel 5 through the discharge port 401 due to the resetting of the telescopic block 703. It should be noted that, for the normal operation of the above-mentioned device, the time required for the end face of the telescopic block 703 to move to the end of the second delivery pipe 404 close to the discharge port 401 is less than the time required for the second bearing 2 adjacent to it to reach the second delivery pipe 404 when the center of the first bearing 1 reaches the center of the semicircular arc of the discharge port 401 close to the first delivery pipe 403. It is worth noting that the device of this scheme is specifically used for classifying bearings with large mass, and the shape of the bearing needs to conform to the shape of the first bearing and the second bearing of this scheme. Such bearings are usually used in the field of large mechanical equipment.

[0041] In addition, in order to ensure that the second bearing 2 can smoothly reach the second material delivery pipe 404 from the first material delivery pipe 403, the bottom surface inside the second material delivery pipe 404 of the present scheme coincides with the common cross-section of the tops of the two telescopic rods 7031, and after the telescopic rod 7031 is reset, one end of the telescopic rod 7031 abuts against one end of the second material delivery pipe 404.

[0042] A drum type material sorting method comprises the following steps:

[0043] S1: The width of the discharge barrel 3 is equal to the diameter of the second bearing 2. A plurality of first bearings 1 and second bearings 2 are loaded in the discharge barrel 3. Such a width setting facilitates the subsequent vibration to make the first bearing 1 or the second bearing 2 lie flat;

[0044] S2: a vibration assembly 8 is arranged in the lower barrel 3, and the vibration assembly 8 is used to implement vibration treatment on the inside of the lower barrel 3, and the vibration assembly 8 is used to ensure that a plurality of first bearings 1 and second bearings 2 located in the lower barrel 3 lie flat against each other;

[0045] S3: A pushing component 9 is arranged at the bottom of the discharge barrel 3. The pushing component 9 is arranged at the bottom of the discharge barrel 3. The output end of the pushing component 9 is located opposite to the discharge port 301. The pushing component 9 is used to push the material at the bottom through the discharge port 301 to the transport pipe 4 for automatic sorting.

[0046] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A drum type material sorting device, characterized in that: It comprises a feeding barrel and a transport pipe filled with a first bearing and a second bearing, the bottom end side wall of the feeding barrel is provided with a feeding port, the feeding barrel and the transport pipe are both inclined, the transport pipe comprises an input port and an output port, the input port and the feeding port are connected to each other; the middle end of the transport pipe is provided with a discharge port; It also includes a first storage barrel and a second storage barrel, wherein the first storage barrel is arranged below the discharge port and is used to store the first bearing coming out of the discharge port; the second storage barrel is arranged at the end of the transport tube and is used to store the second bearing coming out of the output port; The inner diameter of the transport tube is larger than the large barrel diameters of the first bearing and the second bearing, and the transport tube is provided with a moving groove, which is arranged at the bottom of the transport tube along the central axis of the transport tube, and the width of the moving groove is equal to the small barrel diameter of the first bearing; The transport pipe comprises a first material conveying pipe and a second material conveying pipe, one end of the first material conveying pipe is connected to the material discharge port, the other end of the first material conveying pipe and one end of the second material conveying pipe form the material discharge port, and the other end of the second material conveying pipe is the output port; The shape of the discharge port projected onto the horizontal plane is a straight slot with semicircular arcs at both ends, the diameter of the semicircular arc of the discharge port is larger than the large cylinder diameter of the first bearing, the width of the straight slot of the discharge port is equal to the diameter of the semicircular arc of the discharge port, and the diameter of the semicircular arc of the discharge port is smaller than the diameter of the inner diameter of the first conveying pipe and the second conveying pipe; When the small cylinder of the first bearing slides in the first material conveying pipe, surface friction occurs with the moving groove. The sliding speed of the first bearing is not enough, so that the first bearing falls into the first material storage cylinder from the material outlet; The second bearing only has linear friction with the side wall of the first feed pipe. When the second bearing slides to the discharge port, the friction between it and the first feed pipe is too small, resulting in the sliding speed of the second bearing being too fast. Finally, when the second bearing passes the discharge port, it will directly cross the discharge port and slide in the direction of the second feed pipe, so it will not fall from the discharge port.

2. A drum type material sorting device according to claim 1, characterized in that: The invention also includes a limit assembly, which includes a rocker, a limit spring, a telescopic block and a pull rope. A telescopic groove is provided at one end of the first conveying pipe close to the discharge port, and the axial direction of the telescopic groove coincides with the axial direction of the first conveying pipe. The telescopic block slides in the telescopic groove. The rocker is arranged at the bottom of the discharge port. The bottom end of the rocker is hinged to the first conveying pipe through a connecting piece, and the top end of the rocker is connected to the telescopic block through a pull rope. The two ends of the limit spring are respectively connected to the first conveying pipe and the top end of the rocker. The rocker controls the sliding of the telescopic block at the discharge port by locking or releasing the abutment with the first bearing.

3. A drum type material sorting device according to claim 2, characterized in that: The telescopic block includes two telescopic rods and a connecting rod arranged in parallel, the two ends of the connecting rod are respectively connected to the telescopic rods, the two telescopic rods are used to lock or release the separation space relationship between them and the discharge port, and the two telescopic rods are projected onto a horizontal plane to separate the discharge port into a first plane, a second plane and a third plane, and the maximum width between the three planes is smaller than the diameter of the second bearing.

4. The drum type material sorting device according to claim 2, characterized in that: The limiting assembly also includes a return spring, which is arranged in the telescopic groove, and two ends of the return spring are respectively connected to the first material conveying pipe and the telescopic block.

5. A drum type material sorting device according to claim 4, characterized in that: The position where the first bearing releases its abutting fit with the rocker is located at the center of the semicircular arc of the discharge port close to the first conveying pipe.

6. A drum type material sorting device according to claim 5, characterized in that: The time required for the end face of the telescopic block to move to one end of the second conveying pipe close to the discharge port is less than the time required for the second bearing adjacent to it to reach the second conveying pipe when the center of the first bearing reaches the center of the semicircular arc close to the discharge port of the first conveying pipe.

7. The drum type material sorting device according to claim 3, characterized in that: The bottom surface of the second material conveying pipe coincides with the common tangent surface of the tops of the two telescopic rods.

8. A drum type material sorting method, applicable to the drum type material sorting device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: A plurality of first bearings and second bearings are loaded into the lower barrel; S2: a vibration component is arranged in the lower barrel, the vibration component is used to implement vibration treatment on the inside of the lower barrel, and the vibration component is used to ensure that a plurality of first bearings and second bearings located in the lower barrel are placed flat against each other; S3: A pushing component is arranged at the bottom of the discharge barrel, and the pushing component is arranged at the bottom of the discharge barrel. The material at the bottom is pushed through the discharge port to the transport pipe for automatic sorting by using the pushing component.

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