Quality detection device for precision bearing processing

Abstract

The invention relates to the technical field of bearing machining detection, and discloses a quality detection device for precision bearing machining, which comprises a frame body, a workbench is fixedly connected to the top of the frame body, a conveying belt is fixedly connected to the top of the frame body, and the top surface of the conveying belt and the top surface of the workbench are located at the same horizontal height. The top of the workbench is provided with a rotating mechanism for positioning and rotating the bearing inner ring and a detecting mechanism for detecting the rotating bearing inner ring, and the bottom of the workbench is provided with a material guiding assembly. According to the bearing inner ring detecting and distributing device, the rotating mechanism penetrates into the bearing inner ring and drives the bearing inner ring to rotate, then the detecting mechanism detects the centrality of the rotating bearing inner ring, unqualified bearing inner rings are pushed into the material guiding assembly, qualified bearing inner rings are pushed onto the conveying belt again, and therefore detecting and distributing of the bearing inner rings are completed.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing detection, in particular to a quality detection device for precision bearing processing. Background Art

[0002] As an indispensable key basic component in the machinery industry, the quality and performance of precision bearings play a decisive role in the overall operation of mechanical equipment. Precision bearings have been widely used in many fields of modern industry, such as aerospace, CNC machine tools, high-speed trains, robots, etc.

[0003] At present, in the process of precision bearing inner ring processing, the traditional quality inspection method is usually manual sampling and measurement. The measurement result is only for the size of the bearing inner ring, while the measurement accuracy of the center degree of the bearing inner ring during rotation is limited, which in turn poses a hidden danger to the subsequent bearing inner ring in actual use. Summary of the invention

[0004] Technical issues solved In view of the shortcomings of the prior art, the present invention provides a quality inspection device for precision bearing processing, which is mainly used to solve the problem that during the processing of precision bearing inner rings, the traditional quality inspection method usually involves manual sampling and measurement, and the measurement results are only for the size of the bearing inner ring, while the measurement accuracy of the center degree of the bearing inner ring during rotation is limited, which in turn poses a hidden danger to the subsequent bearing inner ring during actual use.

[0005] Technical Solution To achieve the above object, the present invention provides the following technical solutions: A quality inspection device for precision bearing processing comprises a frame, a workbench is fixedly connected to the top of the frame, a conveyor belt is fixedly connected to the top of the frame, the top surface of the conveyor belt and the top surface of the workbench are at the same horizontal height, a rotating mechanism for positioning and rotating the inner ring of the bearing and an inspection mechanism for inspecting the rotating inner ring of the bearing are provided on the top of the workbench, a material guide assembly is provided at the bottom of the workbench, and a material lifting mechanism for positioning and moving the inner ring of the bearing transported on the conveyor belt to an inspection station is provided on one side of the frame.

[0006] As a further solution of the present invention, the lifting mechanism includes a lifting mounting frame, which is fixedly connected to one side of the frame body, one side of the lifting mounting frame is fixedly connected to a lifting cylinder, one end of the lifting cylinder piston rod passes through the lifting mounting frame and is fixedly connected to a lifting pushing frame, one side of the lifting pushing frame is fixedly connected to a lifting guide rod, and the lifting guide rod is slidably connected to the lifting mounting frame, and one side of the lifting mounting frame is fixedly connected to a blocking bar for blocking and limiting the position of the inner ring of the bearing.

[0007] As a further solution of the present invention, an angle groove is provided at one end of the ejection push frame, and the plane where the vertex of the angle groove and the center line of the inner ring of the bearing blocked by the blocking bar are located is parallel to the surface of the blocking bar.

[0008] As a further solution of the present invention, the rotating mechanism includes an upper mounting frame, which is fixedly connected to the top of the workbench, one side of the upper mounting frame is fixedly connected to a guide rail and a driving cylinder, one side of the guide rail is slidably connected to a slide through a slide, one side of the slide is fixedly connected to a rotating motor, one end of the output shaft of the rotating motor passes through the slide and is fixedly connected to a plug, and one end of the piston rod of the driving cylinder is fixed to the top of the slide.

[0009] As a further solution of the present invention, a plurality of rubber pads distributed at equal distances are fixedly connected to the outer side of the circumference of the plug, and the rubber pads are oblate.

[0010] As a further solution of the present invention, the bottom end of the plug is provided with a chamfered angle.

[0011] As a further scheme of the present invention, the detection mechanism includes a material dividing motor, which is fixedly connected to the top of the workbench, one end of the output shaft of the material dividing motor passes through the workbench and is fixedly connected to a turntable, the top of the turntable is fixedly connected to a material dividing mounting frame, one side of the material dividing mounting frame is fixedly connected to a material dividing cylinder, one end of the piston rod of the material dividing cylinder passes through the material dividing mounting frame and is fixedly connected to a material dividing pushing frame, one side of the material dividing pushing frame is fixedly connected to a material dividing guide rod slidably connected to the material dividing mounting frame, the bottom end of the material dividing pushing frame is fixedly connected to a connecting seat, two sliding rods are inserted on one side of the connecting seat, a retaining ring seat that is fixedly connected between the two sliding rods and is inserted into the ring groove of the outer wall of the inner ring of the bearing, and a force sensor is provided between the retaining ring seat and the connecting seat.

[0012] As a further solution of the present invention, one side of the material dividing push frame is fixedly connected to a limiting cylinder, one end of the limiting cylinder piston rod passes through the material dividing push frame and is fixedly connected to the limiting frame, the bottom end of the limiting frame is fixedly connected to a magnetic ring that can fit with the outer wall of the bearing inner ring, and both ends of the magnetic ring are fixedly connected to limit blocks for limiting the upper part of the bearing inner ring.

[0013] As a further solution of the present invention, the material guiding assembly comprises a material dropping hole, which is opened inside the workbench, and the inside of the material dropping hole is fixedly connected to a connecting bucket, and the bottom end of the connecting bucket is fixedly connected to a material guiding inclined bucket.

[0014] Beneficial Effects Compared with the prior art, the present invention provides a quality inspection device for precision bearing processing, which has the following beneficial effects: 1. The present invention penetrates into the inner ring of the bearing through a rotating mechanism and drives the inner ring of the bearing to rotate, and then detects the center degree of the rotating inner ring of the bearing through a detection mechanism. Unqualified ones are pushed into the material guide assembly, and qualified ones are pushed back onto the conveyor belt in an inclined direction, thereby completing the detection and material separation of the inner ring of the bearing.

[0015] 2. In the present invention, the inner ring of the bearing transported by the conveyor belt is blocked and limited by the blocking bar, and then the ejection cylinder is extended to drive the ejection push frame to move, and the inner ring of the bearing blocked and limited by the blocking bar is pushed through the angle groove until the inner ring of the bearing is pushed to the detection station, thereby realizing the feeding of the inner ring of the bearing.

[0016] 3. The driving cylinder of the present invention extends to drive the slide to move downward along the guide rail until the plug is inserted into the inner ring of the bearing, and then the plug is fixed by the friction force generated by the contact between the rubber pad and the inner ring of the bearing, thereby realizing the rotation drive of the inner ring of the bearing.

[0017] 4. The present invention achieves the separation of qualified and unqualified products of the inner ring of the bearing by using the separation cylinder and the separation motor in coordination.

[0018] 5. The present invention drives the limit frame to move by extending the limit cylinder, and makes the magnetic ring adhere to and magnetically attract the outer wall of the bearing inner ring, and the limit block is stuck above the bearing inner ring, thereby completing the material removal operation of the bearing inner ring and the rotating mechanism after the detection is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front three-dimensional structure of a quality inspection device for precision bearing processing proposed by the present invention; Figure 2 This is a bottom side three-dimensional structural schematic diagram of a quality inspection device for precision bearing processing proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a material ejection mechanism of a quality inspection device for precision bearing processing proposed by the present invention; Figure 4 A schematic diagram of the structure of a detection mechanism of a quality detection device for precision bearing processing proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a rotating mechanism of a quality inspection device for precision bearing processing proposed by the present invention.

[0020] In the figure: 1, frame; 2, conveyor belt; 3, ejector mechanism; 301, ejector cylinder; 302, ejector guide rod; 303, ejector mounting frame; 304, ejector push frame; 305, blocking bar; 306, corner slot; 4, drop hole; 5, workbench; 6, rotating mechanism; 601, driving cylinder; 602, slide; 603, rotating motor; 604, rubber pad; 605, plug; 606, chamfer; 607, upper Mounting frame; 608, guide rail; 7, detection mechanism; 701, material distribution cylinder; 702, material distribution guide rod; 703, material distribution mounting frame; 704, material distribution push frame; 705, force sensor; 706, retaining ring seat; 707, sliding rod; 708, connecting seat; 709, material distribution motor; 710, turntable; 8, connecting bucket; 9, material guiding inclined bucket; 10, limit cylinder; 11, limit frame; 12, magnetic ring; 13, limit block. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0023] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0024] Reference Figure 1-Figure 5A quality inspection device for precision bearing processing includes a frame 1, a workbench 5 is fixed to the top of the frame 1 by bolts, a conveyor belt 2 is fixed to the top of the frame 1 by bolts, the top surface of the conveyor belt 2 is at the same horizontal height as the top surface of the workbench 5, a rotating mechanism 6 for positioning and rotating the inner ring of the bearing and a detection mechanism 7 for detecting the inner ring of the rotating bearing are provided on the top of the workbench 5, a material guide assembly is provided at the bottom of the workbench 5, and the material guide assembly includes a material drop hole 4, and the material drop hole 4 is opened inside the workbench 5. A connecting bucket 8 is fixed to the inside of the drop hole 4 by bolts, and a material guiding inclined bucket 9 is fixed to the bottom of the connecting bucket 8 by bolts. A material pushing mechanism 3 is provided on one side of the frame body 1 for positioning and moving the inner ring of the bearing conveyed on the conveyor belt 2 to the detection station, so that it penetrates into the inner ring of the bearing through the rotating mechanism 6 and drives the inner ring of the bearing to rotate, and then the center degree of the rotating inner ring of the bearing is detected by the detection mechanism 7. Unqualified ones are pushed into the material guiding assembly, and qualified ones are pushed back onto the conveyor belt 2 in an inclined direction, thereby completing the detection and material separation of the inner ring of the bearing.

[0025] The ejection mechanism 3 in the present invention comprises an ejection mounting frame 303, which is fixed to one side of the frame body 1 by bolts, and an ejection cylinder 301 is fixed to one side of the ejection mounting frame 303 by bolts, one end of the piston rod of the ejection cylinder 301 passes through the ejection mounting frame 303 and is fixed to an ejection push frame 304 by bolts, and an ejection guide rod 302 is fixed to one side of the ejection push frame 304 by bolts, and the ejection guide rod 302 is slidably connected to the ejection mounting frame 303, and a position guide rod 302 for the inner ring of the bearing is fixed to one side of the ejection mounting frame 303 by bolts. A blocking bar 305 is arranged for blocking and limiting, and an angle groove 306 is opened at one end of the ejecting pushing frame 304, the vertex of the angle groove 306 and the plane of the center line of the bearing inner ring blocked by the blocking bar 305 are parallel to the surface of the blocking bar 305, first, the bearing inner ring transported by the conveyor belt 2 is blocked and limited by the blocking bar 305, and then by starting the ejecting cylinder 301, the ejecting cylinder 301 extends to drive the ejecting pushing frame 304 to move, and pushes the bearing inner ring blocked and limited by the blocking bar 305 through the angle groove 306 until the bearing inner ring is pushed to the detection station.

[0026] The rotating mechanism 6 in the present invention includes an upper mounting frame 607, which is fixed to the top of the workbench 5 by bolts, a guide rail 608 and a driving cylinder 601 are fixed to one side of the upper mounting frame 607 by bolts, a slide 602 is slidably connected to one side of the guide rail 608 through a slide, a rotating motor 603 is fixed to one side of the slide 602 by bolts, one end of the output shaft of the rotating motor 603 passes through the slide 602 and is fixed to a plug 605 by bolts, one end of the piston rod of the driving cylinder 601 is fixed to the top of the slide 602, and the plug 603 is fixed to one side of the slide 602 by bolts. 5 is bonded with a plurality of rubber pads 604 distributed at equal distances on the outer side of the circumference. The rubber pads 604 are oblate in shape. A chamfered corner 606 is provided at the bottom end of the plug 605. By starting the driving cylinder 601, the driving cylinder 601 is extended to drive the slide 602 to move downward along the guide rail 608 until the plug 605 is inserted into the inner ring of the bearing. Then, the friction force generated by the contact between the rubber pads 604 and the inner ring of the bearing is fixed. Then, the rotating motor 603 is started. The rotating motor 603 drives the inner ring of the bearing to rotate through the plug 605 and the rubber pads 604 for a test.

[0027] The detection mechanism 7 in the present invention includes a material distribution motor 709, which is fixed to the top of the workbench 5 by bolts, one end of the output shaft of the material distribution motor 709 passes through the workbench 5 and is fixed with a turntable 710 by bolts, the top of the turntable 710 is fixed with a material distribution mounting frame 703 by bolts, one side of the material distribution mounting frame 703 is fixed with a material distribution cylinder 701 by bolts, one end of the piston rod of the material distribution cylinder 701 passes through the material distribution mounting frame 703 and is fixed with a material distribution push frame 704 by bolts, one side of the material distribution push frame 704 is fixed with a material distribution guide rod 702 slidably connected to the material distribution mounting frame 703 by bolts, and the material distribution push frame The bottom end of 704 is fixed with a connecting seat 708 by bolts, and two sliding rods 707 are inserted on one side of the connecting seat 708. A snap ring seat 706 that is inserted into the ring groove on the outer wall of the inner ring of the bearing is fixed between the two sliding rods 707 by bolts. A force sensor 705 is arranged between the snap ring seat 706 and the connecting seat 708. A limiting cylinder 10 is fixed with bolts on one side of the material distribution push frame 704. One end of the piston rod of the limiting cylinder 10 passes through the material distribution push frame 704 and is fixed with a limiting frame 11 by bolts. A magnetic ring 12 that can fit the outer wall of the inner ring of the bearing is fixed with bolts on the bottom end of the limiting frame 11. Both ends of the magnetic ring 12 are fixed with a pair of bearings by bolts. The limit block 13 above the inner ring is limited. By starting the material distribution cylinder 701, the material distribution cylinder 701 extends and drives the material distribution push frame 704 to move until the retaining ring seat 706 is stuck in the ring groove on the outer wall of the bearing inner ring, and then the bearing inner ring rotates, and the center degree of the rotating bearing inner ring is tested by the force sensor 705. After the test is completed, the limit cylinder 10 is started, and the limit cylinder 10 extends to drive the limit frame 11 to move, and make the magnetic ring 12 fit and magnetically attract the outer wall of the bearing inner ring, and the limit block 13 is stuck above the bearing inner ring, and then the rotating mechanism 6 completes the material removal operation. When the detection is unqualified, the material distribution cylinder 701 extends to make the retaining ring The seat 706 pushes the inner ring of the bearing into the blanking hole 4, and is discharged into the unqualified classification box through the material guide hopper 9. When the inspection is qualified, the material distribution motor 709 is started, and the material distribution motor 709 rotates to drive the turntable 710, the retaining ring seat 706 and the magnetically fixed bearing inner ring to adjust the pushing direction, and then the material distribution cylinder 701 is started. The material distribution cylinder 701 is extended to make the retaining ring seat 706 push the bearing inner ring onto the conveyor belt 2, and then the limit cylinder 10 is shortened to drive the limit frame 11 to move and reset, and the magnetic ring 12 and the outer wall of the bearing inner ring are separated from the magnetic state, and the qualified bearing inner ring is continuously transported to the next station through the conveyor belt 2.

[0028] The present invention is divided into the following steps when used: S1: First, the inner ring of the bearing transported by the conveyor belt 2 is blocked and limited by the blocking bar 305, and then the ejection cylinder 301 is started, the ejection cylinder 301 is extended to drive the ejection push frame 304 to move, and the inner ring of the bearing blocked and limited by the blocking bar 305 is pushed through the angle groove 306 until the inner ring of the bearing is pushed to the inspection station; S2: Then the driving cylinder 601 is started, and the driving cylinder 601 is extended to drive the slide 602 to move downward along the guide rail 608 until the plug 605 is inserted into the inner ring of the bearing, and then the friction force generated by the contact between the rubber pad 604 and the inner ring of the bearing is fixed, and then the rotating motor 603 is started, and the rotating motor 603 drives the inner ring of the bearing to rotate through the plug 605 and the rubber pad 604 to perform a test; S3: By starting the material distribution cylinder 701, the material distribution cylinder 701 extends and drives the material distribution push frame 704 to move until the snap ring seat 706 is clamped into the ring groove on the outer wall of the bearing inner ring, and then the bearing inner ring rotates, and the centering test of the rotating bearing inner ring is performed through the force sensor 705. After the test is completed, the limit cylinder 10 is started, and the limit cylinder 10 extends and drives the limit frame 11 to move, and the magnetic ring 12 is attached to the outer wall of the bearing inner ring and magnetically attracted, and the limit block 13 is clamped above the bearing inner ring, and then the rotating mechanism 6 completes the material removal operation; S4: When the test fails, the material distribution cylinder 701 extends to make the snap ring seat 706 push the inner ring of the bearing into the drop hole 4, and the material is discharged into the unqualified classification box through the material guide hopper 9; S5: When the inspection is qualified, the material distribution motor 709 is started, and the rotation of the material distribution motor 709 drives the turntable 710 to rotate, so as to adjust the pushing direction of the inner ring of the bearing arranged on the retaining ring seat 706 and the magnetic ring 12, and then the material distribution cylinder 701 is started, and the material distribution cylinder 701 is extended to make the retaining ring seat 706 push the inner ring of the bearing to the conveyor belt 2, and then the limit cylinder 10 is shortened to drive the limit frame 11 to move and reset, and make the magnetic ring 12 and the outer wall of the inner ring of the bearing out of the magnetic attraction state, then the inner ring of the bearing that has passed the inspection is continuously conveyed to the next station through the conveyor belt 2.

[0029] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0030] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A quality inspection device for precision bearing processing, comprising a frame (1), the top of which is fixedly connected to a workbench (5), characterized in that: A conveyor belt (2) is fixedly connected to the top of the frame (1); the top surface of the conveyor belt (2) is at the same horizontal height as the top surface of the workbench (5); a rotating mechanism (6) for positioning and rotating the inner ring of the bearing and a detection mechanism (7) for detecting the rotating inner ring of the bearing are provided on the top of the workbench (5); a material guide assembly is provided at the bottom of the workbench (5); and a material ejection mechanism (3) for positioning and moving the inner ring of the bearing transported on the conveyor belt (2) to a detection station is provided on one side of the frame (1).

2. A quality inspection device for precision bearing processing according to claim 1, characterized in that: The ejection mechanism (3) comprises an ejection mounting frame (303), the ejection mounting frame (303) being fixedly connected to one side of the frame body (1), a ejection cylinder (301) being fixedly connected to one side of the ejection mounting frame (303), one end of a piston rod of the ejection cylinder (301) passing through the ejection mounting frame (303) and being fixedly connected to an ejection pushing frame (304), a ejection guide rod (302) being fixedly connected to one side of the ejection pushing frame (304), and the ejection guide rod (302) being slidably connected to the ejection mounting frame (303), and a blocking bar (305) for blocking and limiting the position of the inner ring of the bearing being fixedly connected to one side of the ejection mounting frame (303).

3. A quality inspection device for precision bearing processing according to claim 2, characterized in that: An angle groove (306) is formed at one end of the ejection rack (304), and the plane where the vertex of the angle groove (306) and the center line of the inner ring of the bearing blocked by the blocking strip (305) are located is parallel to the surface of the blocking strip (305).

4. A quality inspection device for precision bearing processing according to claim 1, characterized in that: The rotating mechanism (6) comprises an upper mounting frame (607), the upper mounting frame (607) being fixedly connected to the top of the workbench (5), one side of the upper mounting frame (607) being fixedly connected to a guide rail (608) and a driving cylinder (601), one side of the guide rail (608) being slidably connected to a slide frame (602) via a slide table, one side of the slide frame (602) being fixedly connected to a rotating motor (603), one end of an output shaft of the rotating motor (603) passing through the slide frame (602) and being fixedly connected to a plunger (605), and one end of a piston rod of the driving cylinder (601) being fixed to the top of the slide frame (602).

5. A quality inspection device for precision bearing processing according to claim 4, characterized in that: A plurality of rubber pads (604) distributed at equal distances are fixedly connected to the outer side of the circumference of the plug (605), and the rubber pads (604) are in an oblate shape.

6. A quality inspection device for precision bearing processing according to claim 5, characterized in that: The bottom end of the plug (605) is provided with a chamfered corner (606).

7. A quality inspection device for precision bearing processing according to claim 1, characterized in that: The detection mechanism (7) comprises a material distribution motor (709), the material distribution motor (709) is fixedly connected to the top of the workbench (5), one end of the output shaft of the material distribution motor (709) passes through the workbench (5) and is fixedly connected to a turntable (710), the top of the turntable (710) is fixedly connected to a material distribution mounting frame (703), one side of the material distribution mounting frame (703) is fixedly connected to a material distribution cylinder (701), one end of the piston rod of the material distribution cylinder (701) passes through the material distribution mounting frame (703) and is fixedly connected to a material distribution push rod (710). A material distribution push frame (704) is fixedly connected to one side of the material distribution push frame (704) with a material distribution guide rod (702) slidably connected to the material distribution mounting frame (703); a connecting seat (708) is fixedly connected to the bottom end of the material distribution push frame (704); two sliding rods (707) are inserted into one side of the connecting seat (708); a snap ring seat (706) is fixedly connected between the two sliding rods (707) and is inserted into the ring groove on the outer wall of the inner ring of the bearing; a force sensor (705) is provided between the snap ring seat (706) and the connecting seat (708).

8. A quality inspection device for precision bearing processing according to claim 7, characterized in that: One side of the material distribution push frame (704) is fixedly connected to a limit cylinder (10), one end of a piston rod of the limit cylinder (10) passes through the material distribution push frame (704) and is fixedly connected to a limit frame (11), the bottom end of the limit frame (11) is fixedly connected to a magnetic ring (12) that can fit the outer wall of the inner ring of the bearing, and both ends of the magnetic ring (12) are fixedly connected to limit blocks (13) that limit the upper part of the inner ring of the bearing.

9. A quality inspection device for precision bearing processing according to claim 1, characterized in that: The material guide assembly comprises a material drop hole (4), the material drop hole (4) is opened inside the workbench (5), a connecting bucket (8) is fixedly connected inside the material drop hole (4), and a material guide inclined bucket (9) is fixedly connected to the bottom end of the connecting bucket (8).

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