Workpiece steering mechanism

By setting up a workpiece steering mechanism with automatic transmission and angle reversal between the two grinders, the problems of low machining efficiency and high manufacturing cost in the prior art are solved, and the automatic processing of workpieces between the two grinders is realized and the Angle reversal improves processing efficiency and reduces costs.

CN222134626UActive Publication Date: 2024-12-10宁波邦一机械科技有限公司
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Patent Information

Application Number
CN202420907476.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-28
Publication Date
2024-12-10
Estimated Expiration
2034-04-28

AI Technical Summary

Technical Problem

In the prior art, the grinding of magnetic steel requires two independent grinding machines, resulting in low processing efficiency and high manufacturing cost, and frequent transfer and vibration disk coordination are required.

Method used

A workpiece steering mechanism is designed, including a fixing frame, a turntable and a drive assembly, to realize the automatic transmission and angular reversal of the workpiece between the two grinders, and to realize the continuous machining of the workpiece through the reversing track, reducing the redirection operation.

Benefits of technology

It improves the efficiency of magnetic steel processing, reduces costs, avoids the use of transit and vibration disks, realizes the automatic transmission of workpieces between the two grinders and angle reversal, and improves the processing efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a workpiece steering mechanism, which relates to the field of grinding machines and comprises a fixing frame, a turntable and a driving component, the fixing frame is connected to a base of at least one grinding machine or directly placed on the ground, and the turntable is connected to the fixing frame in a horizontally rotating manner. The radial outer end of the rotary disc is close to a discharging port of the previous grinding machine and a feeding port of the next grinding machine, and the driving assembly is connected to the fixing frame and used for driving the rotary disc to rotate in the circumferential direction. The fixing frame is further connected with a reversing rail with the two ends and the bottom open, the reversing rail is located above the rotating disc, the lower end face of the reversing rail is close to the upper surface of the rotating disc, and the openings in the two ends of the reversing rail correspond to a discharging port and a feeding port of the front grinding machine and the rear grinding machine respectively. The workpiece steering mechanism is used for being arranged between two adjacent grinding machines, automatic conveying of workpieces between the two grinding machines is achieved, reversing is achieved in the conveying process, the machining efficiency is improved, and the cost is reduced.
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Description

Technical Field

[0001] The utility model relates to the technical field of grinding machine auxiliary mechanisms, in particular to a workpiece steering mechanism. Background Art

[0002] A grinder (grinding machine) is a machine tool that uses abrasive tools to grind the surface of a workpiece. Most grinders use high-speed rotating grinding wheels for grinding, while a few use other grinding tools such as oilstones, abrasive belts, and free abrasives for processing, such as honing machines, superfinishing machines, belt grinders, grinders, and polishers.

[0003] Magnetic steel is mainly used in various fields such as sensors, instruments, electronics, electromechanics, medical treatment, teaching, automobiles, aviation, and military technology. Depending on the metal composition of the magnetic steel, its magnetic properties will be different, and thus its uses will also be different. At present, magnetic steel is manufactured by powder metallurgy. The surface roughness of products made by powder metallurgy often does not meet the requirements, so it is necessary to grind its outer surface through a grinding device. Depending on the actual application scenario, the position of the outer surface that needs to be ground on the product is also different. At present, a large part of the magnetic steel has a rectangular structure. When grinding, in addition to grinding the two end faces in the length direction, it is also necessary to grind the two symmetrical side walls in the width direction.

[0004] In the prior art, two grinding machines are required for magnetic steel grinding of this type, one for grinding the two end faces in the length direction, and the other for grinding the two side walls in the width direction, and the two grinding machines work independently of each other. That is, the product needs to be ground twice, and the product needs to be transferred between the two grindings. After the transfer, the grinding surface of the product needs to be adjusted through a special vibration plate. Not only is the processing efficiency low, but it also requires the use of a vibration plate and a transfer box, which greatly increases the manufacturing cost. Utility Model Content

[0005] In order to overcome at least one defect in the above-mentioned prior art, the utility model provides a workpiece steering mechanism, which is used to be arranged between two adjacent grinders to realize automatic transmission of the workpiece between the two grinders and realize reversal during the transmission process, thereby improving processing efficiency and reducing costs.

[0006] The utility model provides a workpiece steering mechanism, which is arranged between two adjacent grinding machines and is used for rotating the workpiece output by the previous grinding machine to a set angle and then entering the next grinding machine, and is characterized in that: it comprises a fixed frame, a turntable and a driving assembly, the fixed frame is connected to the machine base of at least one of the grinding machines or is directly placed on the ground, the turntable is horizontally rotatably connected to the fixed frame, the radial outer ends of the turntable are respectively close to the discharge port of the previous grinding machine and the feed port of the next grinding machine, the driving assembly is connected to the fixed frame and is used to drive the turntable to rotate circumferentially so that the workpiece is transferred from the discharge port to the feed port; the fixed frame is also connected to a reversing track with openings at both ends and the bottom, the reversing track is located above the turntable, and the lower end surface of the reversing track is close to the upper surface of the turntable, and the openings at both ends of the reversing track respectively correspond to the discharge port and the feed port of the front and rear grinding machines.

[0007] Compared with the prior art, the workpiece steering mechanism of the utility model has the following advantages:

[0008] Compared with the transfer operation in the prior art, a special turntable structure is arranged between two adjacent grinding machines in the utility model, and the turntable can rotate in a circumferential direction, and is used to transfer the workpiece from the discharge port of the previous grinder to the feed port of the next grinder, so as to realize the automatic transfer of the workpiece between the two grinders; in addition, a reversing track is arranged above the turntable, and the lower part of the reversing track is open, that is, when the workpiece is transferred on the turntable, it is actually necessary to perform reversing on the reversing track. For example, after the workpiece is ground at the two end walls in the length direction in the previous grinder, it is transferred by the turntable and enters the next grinder along the other direction under the reversing action of the reversing track, and then the corresponding two side walls in the width direction are ground in the next grinder. During the whole processing process, the workpiece does not need to be unloaded, transferred and then loaded, and can be directly completed through the reversing mechanism, thereby effectively improving the processing efficiency.

[0009] As an improvement, the driving assembly includes a driving motor, the driving motor is vertically connected to the fixing frame, and a fixing block is connected to the output shaft of the driving motor, and the center of the turntable is connected to the fixing block. In the above improved structure, the turntable is driven by the driving motor, which has a simple structure and stable driving. In addition, the turntable is fixed by the fixing block, which facilitates the connection of fasteners.

[0010] In a further improvement, the fixing frame includes an L-shaped mounting seat, the vertical plate of the mounting seat is detachably and height-adjustably connected to the frame of the grinding machine, the horizontal plate of the mounting seat is detachably connected with an adjustment plate that can adjust the position forward, backward, left and right, the driving motor is vertically connected to the lower end of the adjustment plate, and the output shaft of the driving motor passes through one end of the adjustment plate and is connected to the turntable through a fixing block. In the above improved structure, the multi-angle adjustment of the driving motor is achieved through the design of a specific structure, thereby achieving the position adjustment of the turntable, ensuring that the turntable is accurately aligned with the discharge port and the feed port, and facilitating the smooth transmission of the workpiece.

[0011] Further improved, the discharge channel of the previous grinder is parallel to the feed channel of the subsequent grinder, the reversing track includes a first baffle and a second baffle arranged at intervals along the radial direction of the turntable and connected to the fixed frame, and the height direction of the first baffle and the second baffle is perpendicular to the upper surface of the turntable, the first baffle is a first arc baffle arranged concentrically with the turntable, and the two ends of the first arc baffle extend to the discharge port and the feed port respectively; the second baffle includes a second arc baffle concentric with the first baffle, and the gap between the first arc baffle and the first arc baffle is smaller than the length of the workpiece, and the second arc baffle is close to the feed port A first arc guide plate bent toward the center of the turntable is connected to one end of the outlet, and a second arc guide plate bent toward the side away from the center of the turntable is connected to one end of the second arc baffle plate close to the outlet. A feed guide channel is formed between the first arc guide plate and one end of the first arc baffle, and a discharge guide channel is formed between the second arc guide plate and the other end of the first arc baffle; the opening size of the feed guide channel is larger than the length of the workpiece, and the opening size of the discharge guide channel is larger than the width of the workpiece and smaller than the length of the workpiece, so that the workpiece enters the reversing channel along the length direction and rotates 90° before sliding out of the reversing track in the width direction.

[0012] Preferably, the second arc-shaped baffle plate, the first arc-shaped guide plate and the second arc-shaped guide plate are an integrated structure formed by bending an integral plate. The integrated processing saves working procedures and reduces costs.

[0013] Further improved, the first arc baffle is connected to a first fixing plate perpendicular to the discharge channel, the first fixing plate is provided with a first elongated hole extending along its length direction, and the first elongated hole is penetrated with a first bolt for connecting the first arc baffle to the fixing frame; the second arc baffle is connected to a second fixing plate perpendicular to the discharge channel, the second fixing plate is provided with a second elongated hole extending along its length direction, and the second elongated hole is penetrated with a second bolt for connecting the second arc baffle to the fixing frame.

[0014] As a further improvement, the second fixing plate is further provided with a third elongated hole parallel to the second elongated hole, and a third bolt for connecting the second arc-shaped baffle plate to the second fixing plate is passed through the third elongated hole.

[0015] Other improved features and advantages of the utility model will be described in the subsequent specific embodiments, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be achieved and obtained through the structures specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a simplified structural diagram of the workpiece steering mechanism of the utility model in use;

[0017] Figure 2 It is a partial top view of the workpiece steering mechanism of the present utility model.

[0018] Description of reference numerals:

[0019] 1. Grinding machine; 2. Turntable; 3. Driving motor; 4. Mounting seat; 5. Adjusting plate; 6. First arc-shaped baffle plate; 7. Second arc-shaped baffle plate; 8. First arc-shaped guide plate; 9. Second arc-shaped guide plate; 10. First fixing plate; 11. First elongated hole; 12. First bolt; 13. Second fixing plate; 14. Second elongated hole; 15. Second bolt; 16. Third elongated hole; 17. Third bolt. DETAILED DESCRIPTION

[0020] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0021] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0022] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] See also Figure 1 , Figure 2As shown, an embodiment of the present application discloses a workpiece steering mechanism, which is arranged between two adjacent grinders 1, and is used to rotate the workpiece output by the previous grinder 1 by a set angle and then enter the next grinder 1. Specifically, it refers to rotating the workpiece output by the previous grinder 1 by 90° and then entering the next grinder 1, so as to realize continuous grinding of different end faces of the workpiece and improve work efficiency.

[0024] The workpiece steering mechanism includes a fixed frame, a turntable 2 and a driving assembly. The fixed frame here is connected to the frame of any one of the grinders 1 or is fixed to the frames of the two grinders 1 at the same time. Of course, in some embodiments, the fixed frame can be directly placed on the ground for support and fixation. In addition, the turntable 2 in this structure can be horizontally rotatably connected to the fixed frame, and the radial outer ends of the turntable 2 are respectively close to the discharge port of the previous grinder 1 and the feed port of the next grinder 1. The driving assembly is connected to the fixed frame to drive the turntable 2 to rotate circumferentially so that the workpiece is transferred from the discharge port to the feed port; the fixed frame is also connected to a reversing track with openings at both ends and the bottom. The reversing track is located above the turntable 2 and close to its radial outer end, and the lower end surface of the reversing track is close to the upper surface of the turntable 2. The openings at both ends of the reversing track correspond to the discharge port and the feed port of the front and rear grinders 1 respectively.

[0025] Here’s how it works:

[0026] The driving component drives the turntable 2 to rotate circumferentially. After the two sides of the workpiece in the length direction are processed by the previous grinder 1, they are output from the discharge channel of its discharge port, and then enter the turntable 2 through an opening on one side of the reversing track. Driven by the rotation of the turntable 2, the workpiece is slowly transferred to the other end opening of the reversing track, and under the guiding action of the reversing track, the workpiece is rotated by a set angle and output to the loading channel of the subsequent grinder 1, and then the other two side walls of the workpiece are ground. In this embodiment, the set angle is 90 degrees, that is, the workpiece is ground at both end walls in the length direction in the previous grinder 1, and then the corresponding two side walls in the width direction are ground in the subsequent grinder 1. During the entire processing process, the workpiece does not need to be unloaded, transferred, and then loaded, and can be directly completed through the reversing mechanism, which effectively improves the processing efficiency.

[0027] In this embodiment, the driving assembly includes a driving motor 3, which is vertically connected to a fixing frame, and a fixing block (not shown) is connected to the output shaft of the driving motor 3, and the center of the turntable 2 is connected to the fixing block. Figure 1 , 2 It can be seen that the center position of the turntable 2 is connected and fixed to the fixing block by four screws distributed in a rectangular shape.

[0028] Preferably, the fixing frame includes an L-shaped mounting seat 4, the vertical plate of the mounting seat 4 is detachably and height-adjustably connected to the frame of the grinding machine 1, the horizontal plate of the mounting seat 4 is detachably connected with an adjustment plate 5 that can be adjusted in position forward, backward, left and right, the driving motor 3 is vertically connected to the lower end of the adjustment plate 5, and the output shaft of the driving motor 3 passes through one end of the adjustment plate 5 and is connected to the turntable 2 through a fixed block. In this structure, in order to increase the structural stability, a triangular reinforcing rib is connected to the middle position between the horizontal plate and the vertical plate. In addition, a first waist-shaped hole extending vertically is opened at the lower end of the vertical plate, and a first fixing bolt for connecting the vertical plate to the frame of the grinding machine 1 is passed through the first waist-shaped hole. In this embodiment, in view of the installation space, two horizontally arranged mounting columns are connected to the side wall of the frame of the previous grinding machine 1, and the lower end of the vertical plate is movably connected to the two mounting columns along the vertical direction. Similarly, the adjustment plate 5 is respectively provided with second waist-shaped holes extending in the front-to-back direction and the left-to-right direction. The adjustment plate 5 is connected to the horizontal plate through the second fixing bolts in the corresponding second waist-shaped holes, and the front-to-back and left-to-right position adjustment of the driving motor 3 is achieved by adjusting the position of the second fixing bolts in the corresponding waist-shaped holes, thereby ensuring that the turntable 2 is accurately aligned with the discharge port and the feed port, thereby facilitating the smooth transmission of the workpiece.

[0029] In this embodiment, two adjacent grinders 1 are arranged side by side, that is, the discharge channel of the front grinder 1 is parallel to the feed channel of the rear grinder 1, and the reversing track includes a first baffle and a second baffle arranged at intervals along the radial direction of the turntable 2, the first baffle and the second baffle are both connected to the fixed frame, and the height direction of the first baffle and the second baffle is perpendicular to the upper surface of the turntable 2; wherein the first baffle is a first arc-shaped baffle 6 arranged concentrically with the turntable 2, the first arc-shaped baffle 6 is located on the rear side of the turntable 2 and is basically aligned with its radial outer edge, and the two ends of the first arc-shaped baffle 6 extend to the discharge port and the feed port respectively, see the attached Figure 2 ; In actual applications, in order to enable the workpiece to enter or move away from the reversing track more smoothly, transition guide sections can be added at the two ends of the first arc-shaped baffle 6 close to the discharge port and the feed port, and the two transition guide sections extend to the rear side wall position of the discharge channel and the feed channel outlet end respectively.

[0030] In addition, see Appendix Figure 1 , 2The second baffle plate includes a second arc baffle plate 7 that is concentric with the first baffle plate, and the gap between the first arc baffle plate 6 and the first arc baffle plate 6 is smaller than the length of the workpiece. This design is to prevent the workpiece from being unable to reverse correctly during the conveying process of the turntable 2; the second arc baffle plate 7 is connected to a first arc guide plate 8 bent toward the center of the turntable 2 at one end close to the feed port, and the first arc guide plate 8 extends toward the front end at one end away from the second arc baffle plate 7, preferably beyond the front side wall of the discharge channel. In this way, when the workpiece enters the turntable 2 after leaving the discharge channel, the second arc guide plate 9 can play a blocking effect, preventing the workpiece from entering the central area of ​​the turntable 2, resulting in the inability to accurately enter the reversing track; similarly, the second arc baffle plate 7 is connected to a first arc guide plate 8 bent toward the far side at one end close to the discharge port. A second arc guide plate 9 is bent away from the center of the turntable 2, a feed guide channel is formed between the first arc guide plate 8 and one end of the first arc baffle 6, and a discharge guide channel is formed between the second arc guide plate 9 and the other end of the first arc baffle 6; the opening size of the feed guide channel is larger than the length of the workpiece, and the opening size of the discharge guide channel is larger than the width of the workpiece and smaller than the length of the workpiece, so that the workpiece enters the reversing channel along the length direction and rotates 90° and then slides out of the reversing track in the width direction; in this structure, the second arc guide plate 9 extends from one end of the second arc baffle 7 to the feed channel of the subsequent grinder 1, and a part of it located in the feed channel is basically horizontal, so that the workpiece can enter the feed channel in a horizontal state after coming out of the discharge guide channel.

[0031] In this embodiment, preferably, the second arc-shaped baffle plate 7, the first arc-shaped guide plate 8 and the second arc-shaped guide plate 9 are an integrated structure formed by bending an integral plate.

[0032] In some other embodiments, the second arc-shaped baffle plate 7, the first arc-shaped guide plate 8 and the second arc-shaped guide plate 9 can also be separately processed into respective curved plate bodies, and then connected into one by welding or screwing.

[0033] More specifically, Figure 2As shown, the first arc baffle 6 is connected to a first fixing plate 10 perpendicular to the discharge channel, the first fixing plate 10 is provided with a first elongated hole 11 extending along its length direction, and a first bolt 12 for connecting the first arc baffle 6 to the fixing frame is penetrated in the first elongated hole 11; the second arc baffle 7 is connected to a second fixing plate 13 perpendicular to the discharge channel, the second fixing plate 13 is provided with a second elongated hole 14 extending along its length direction, and a second bolt 15 for connecting the second arc baffle 7 to the fixing frame is penetrated in the second elongated hole 14. The front and rear position adjustment of the first arc baffle 6 can be achieved by adjusting the position of the first bolt 12 in the first elongated hole 11, and similarly, the front and rear position adjustment of the second arc baffle 7 can be achieved by adjusting the position of the second bolt 15, thereby achieving the width adjustment between the reversing tracks, so as to be applicable to workpieces of different specifications and sizes and improve versatility.

[0034] In this embodiment, a third elongated hole 16 parallel to the second elongated hole 14 is further provided on the second fixing plate 13, and a third bolt 17 for connecting the second arc-shaped baffle plate 7 to the second fixing plate 13 is passed through the third elongated hole 16. After this arrangement, the second arc-shaped baffle plate 7 can be adjusted simultaneously by the second bolt 15 and the third bolt 17, and the adjustment is more convenient and accurate.

[0035] In the description of the present application, the description with reference to the term "present embodiment" or "some embodiments" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A workpiece turning mechanism, arranged between two adjacent grinding machines (1), for turning a workpiece outputted from a preceding grinding machine (1) by a set angle and then entering a succeeding grinding machine (1), characterized in that: The invention comprises a fixed frame, a turntable (2) and a driving assembly, wherein the fixed frame is connected to the machine base of at least one of the grinding machines (1) or is directly placed on the ground, the turntable (2) is connected to the fixed frame in a horizontally rotatable manner, the radial outer ends of the turntable (2) are respectively close to the discharge port of the preceding grinder (1) and the feed port of the following grinder (1), the driving assembly is connected to the fixed frame for driving the turntable (2) to rotate circumferentially so that the workpiece is transferred from the discharge port to the feed port; the fixed frame is also connected to a reversing track with openings at both ends and the bottom, the reversing track is located above the turntable (2), and the lower end surface of the reversing track is close to the upper surface of the turntable (2), and the openings at both ends of the reversing track respectively correspond to the discharge port and the feed port of the front and rear grinders (1).

2. The workpiece steering mechanism according to claim 1, characterized in that: The driving assembly comprises a driving motor (3), the driving motor (3) is vertically connected to the fixing frame, and a fixing block is connected to the output shaft of the driving motor (3), and the center of the rotating disk (2) is connected to the fixing block.

3. The workpiece steering mechanism according to claim 2, characterized in that: The fixing frame comprises an L-shaped mounting seat (4), the vertical plate of the mounting seat (4) is detachably connected to the frame of the grinding machine (1) in a height-adjustable manner, the horizontal plate of the mounting seat (4) is detachably connected to an adjustment plate (5) whose position can be adjusted forward, backward, left and right, the driving motor (3) is vertically connected to the lower end of the adjustment plate (5), and the output shaft of the driving motor (3) passes through one end of the adjustment plate (5) and is connected to the turntable (2) through a fixing block.

4. The workpiece steering mechanism according to any one of claims 1 to 3, characterized in that: The discharge channel of the preceding grinder (1) is parallel to the feed channel of the following grinder (1), the reversing track comprises a first baffle and a second baffle which are arranged at intervals along the radial direction of the turntable (2) and connected to the fixed frame, and the height direction of the first baffle and the second baffle is perpendicular to the upper surface of the turntable (2), the first baffle is a first arc-shaped baffle (6) which is arranged concentrically with the turntable (2), and the two ends of the first arc-shaped baffle (6) extend to the discharge port and the feed port respectively; The second baffle plate comprises a second arc-shaped baffle plate (7) which is concentric with the first baffle plate, and the gap between the first arc-shaped baffle plate (6) and the first arc-shaped baffle plate (6) is smaller than the length of the workpiece; the second arc-shaped baffle plate (7) is connected to a first arc-shaped guide plate (8) which is bent toward the center of the turntable (2) at one end close to the feed port; the second arc-shaped baffle plate (7) is connected to a second arc-shaped guide plate (9) which is bent toward the side away from the center of the turntable (2) at one end close to the discharge port; a feed guide channel is formed between the first arc-shaped guide plate (8) and one end of the first arc-shaped baffle plate (6); and a discharge guide channel is formed between the second arc-shaped guide plate (9) and the other end of the first arc-shaped baffle plate (6); the opening size of the feed guide channel is larger than the length of the workpiece, and the opening size of the discharge guide channel is larger than the width of the workpiece and smaller than the length of the workpiece, so that the workpiece enters the reversing channel along the length direction and rotates 90° and then slides out of the reversing track in the width direction.

5. The workpiece steering mechanism according to claim 4, characterized in that: The second arc-shaped baffle plate (7), the first arc-shaped guide plate (8) and the second arc-shaped guide plate (9) are an integrated structure formed by bending an integral plate.

6. The workpiece steering mechanism according to claim 4, characterized in that: The first arc-shaped baffle plate (6) is connected to a first fixing plate (10) perpendicular to the discharge channel, the first fixing plate (10) is provided with a first elongated hole (11) extending along its length direction, and a first bolt (12) for connecting the first arc-shaped baffle plate (6) to the fixing frame is penetrated through the first elongated hole (11); the second arc-shaped baffle plate (7) is connected to a second fixing plate (13) perpendicular to the discharge channel, the second fixing plate (13) is provided with a second elongated hole (14) extending along its length direction, and a second bolt (15) for connecting the second arc-shaped baffle plate (7) to the fixing frame is penetrated through the second elongated hole (14).

7. The workpiece steering mechanism according to claim 6, characterized in that: The second fixing plate (13) is also provided with a third elongated hole (16) parallel to the second elongated hole (14), and a third bolt (17) for connecting the second arc-shaped baffle plate (7) to the second fixing plate (13) is passed through the third elongated hole (16).