Workpiece front and back face adjusting mechanism and feeding and polishing system

Abstract

The utility model relates to a workpiece front and back face adjusting mechanism and a feeding and polishing system, and belongs to the technical field of workpiece conveying and machining. The workpiece front and back face adjusting mechanism comprises a driving cylinder and an overturning base, a driving shaft of the driving cylinder is connected with the overturning base, the driving cylinder can drive the overturning base to rotate in the forward direction and / or the reverse direction, and a linear horizontal through groove is formed in the overturning base. The workpiece feeding and polishing system comprises the workpiece front and back face adjusting mechanism. When the driving cylinder drives the overturning seat to rotate clockwise or anticlockwise, a workpiece arranged in the linear through groove overturns along with the overturning seat and finally falls down from the other end of the through groove in a vertical posture, so that the workpiece can be overturned from a horizontal posture to a vertical posture, and the workpiece can be overturned according to the initial orientation of the workpiece. And the overturning seat can be selected to rotate clockwise or anticlockwise, so that the orientations of the front surfaces or the back surfaces of all falling workpieces are kept consistent.

Description

Technical Field

[0001] This utility model relates to a workpiece front and back adjustment mechanism and a feeding and grinding system, belonging to the field of workpiece conveying and processing technology. Background Technology

[0002] In the field of automotive air conditioning compressor manufacturing, the valve plate, as a core component of the compressor, directly affects the overall working efficiency, durability, and cooling effect of the compressor. In particular, the smoothness of its surface is crucial for ensuring smooth airflow and sealing performance inside the compressor. Typically, automotive air conditioning compressor valve plates are required to meet high surface finish standards, such as 0.4Ra, to ensure stable operation of the compressor under complex and changing operating conditions.

[0003] In current valve plate grinding processes, the front and back sides of the valve plate are ground by two separate grinding wheels within the grinding machine to achieve the desired surface finish. However, because the two sides of an automotive air conditioning compressor valve plate often have different external structures, there are significant differences in material hardness and microstructure distribution. Therefore, when the valve plate enters the grinding machine with different sides, the wear rate of the grinding wheels will vary significantly when they contact the valve plate surfaces made of different materials.

[0004] This inconsistency in wear not only shortens the lifespan of the grinding wheel, but more importantly, it severely affects the consistency of valve plate grinding and the uniformity of surface finish, thus reducing product quality. To solve this problem, the current common practice is to have workers manually inspect the valve plates on the valve plate conveyor line, visually determining the orientation of the valve plates to ensure they are fed into the grinding machine in the same direction.

[0005] However, this manual inspection method has obvious drawbacks. First, manual inspection is prone to omissions, especially on high-speed, continuous production lines. Workers' attention and judgment may be affected by fatigue, distraction, and other factors, leading to misjudgments of the correct orientation of some valve plates, thus affecting the grinding effect. Second, manual inspection is inefficient and cannot meet the needs of large-scale, high-efficiency production.

[0006] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present invention, and therefore may include information that does not constitute prior art. Utility Model Content

[0007] The purpose of this utility model is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0008] The technical solution provided by this utility model is as follows: a workpiece front and back adjustment mechanism, including a drive cylinder and a flipping seat, wherein the drive shaft of the drive cylinder is connected to the flipping seat, the drive cylinder can drive the flipping seat to rotate in the forward and / or reverse direction, and the flipping seat is provided with a horizontal through groove in the shape of a straight line.

[0009] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: when the drive cylinder drives the flipping seat to rotate clockwise or counterclockwise, the workpiece placed in the through slot will flip accordingly and eventually fall from the other end of the through slot in a vertical position. This not only realizes the flipping of the workpiece from a horizontal to a vertical position, but also allows the flipping seat to rotate clockwise or counterclockwise according to the initial orientation of the workpiece, thereby ensuring that the front or back orientation of all falling workpieces remains consistent.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the flipping seat is also provided with a vertical through groove in the shape of a straight line, and the horizontal through groove in the shape of a straight line and the vertical through groove in the shape of a straight line form a cross-shaped through groove.

[0012] The beneficial effect of adopting the above-mentioned further solution is that when the drive cylinder drives the flipping seat to rotate clockwise or counterclockwise, the workpiece that enters the cross-shaped through groove flips over and falls vertically from the other opening of the cross-shaped through groove. The workpiece front and back adjustment mechanism can not only flip the workpiece to a vertical position, but also select to rotate the flipping seat clockwise or counterclockwise according to the initial orientation of the workpiece, thereby ensuring that the front or back orientation of all falling workpieces remains consistent.

[0013] Furthermore, it also includes an outer sleeve, which is fitted over the flipping seat and has at least two inlet / outlet ports.

[0014] The beneficial effects of adopting the above-mentioned further solution are that the outer sleeve enhances the stability of the workpiece during the flipping process, preventing the workpiece from accidentally falling off or shifting due to the flipping action. In addition, the outer sleeve also improves the safety of the workpiece front and back adjustment mechanism, reduces the direct contact between the workpiece and other parts of the machine, and reduces the risk of workpiece damage or machine failure.

[0015] Furthermore, the central angle between two adjacent inlets / outlets is set at a 90° angle.

[0016] The beneficial effect of adopting the above-mentioned further solution is that a 90° angle is formed between adjacent inlet / outlet ports, which is the same as the central angle of the two adjacent opening ends of the cross-shaped through slot. When the flipping seat rotates, whether clockwise or counterclockwise, the workpiece can enter the cross-shaped through slot from one of the inlet / outlet ports, and after flipping, it falls vertically from the other inlet / outlet port adjacent to it (i.e., with an inlet / outlet angle of 90°). The 90° angle makes the structure of the entire mechanism more compact and reasonable, which is conducive to saving space and improving production efficiency.

[0017] Furthermore, the outer sleeve is fixedly installed on the cylinder body or frame of the drive cylinder.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the outer sleeve is fixedly installed on the cylinder body of the drive cylinder or on the frame. The outer sleeve remains stationary when the flipping seat rotates, thereby ensuring the stability and accuracy of the inlet / outlet. This fixed installation method helps to simplify the structure of the mechanism, reduce manufacturing costs, and also helps to improve the operational stability and reliability of the workpiece front and back adjustment mechanism.

[0019] Furthermore, both the outer sleeve and the tilting seat are driven by the drive shaft of the drive cylinder, and the outer sleeve and the tilting seat can rotate synchronously.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the workpiece front and back adjustment mechanism has greater flexibility and adaptability, and can adjust the rotation angle of the outer sleeve and the flipping seat according to actual needs, thereby meeting different workpiece flipping and conveying requirements.

[0021] Furthermore, the flipping seat is a cylinder, and a through groove is formed on the cylinder.

[0022] Furthermore, the flipping seat is a cylinder, and a cross-shaped through groove is formed on the cylinder.

[0023] Furthermore, the cylinder is provided with a hollowed-out portion.

[0024] The beneficial effect of adopting the above-mentioned further solution is that setting a hollow part in the cylinder can significantly reduce the weight of the flipping seat and reduce the energy consumption and operating cost of the entire workpiece front and back adjustment mechanism.

[0025] Furthermore, the drive cylinder is connected to the rotating seat via a coupling.

[0026] The advantage of adopting the above-mentioned further solution is that using a coupling to connect the drive cylinder and the tilting seat can ensure that the transmission between the two is smoother and more reliable.

[0027] A workpiece feeding and grinding system includes a front feeding mechanism, a vision inspection mechanism, a pushing mechanism, a rear feeding mechanism, and a grinding machine, and also includes the workpiece front and back adjustment mechanism.

[0028] The front feeding mechanism is used to transport the workpiece to the area below the vision inspection mechanism;

[0029] The vision inspection mechanism is used to inspect the front and back sides of the workpiece located on the front feeding mechanism;

[0030] The pushing mechanism is used to push the workpiece from the front feeding mechanism into the workpiece front and back adjustment mechanism; the workpiece front and back adjustment mechanism is used to flip the workpiece clockwise or counterclockwise.

[0031] The rear feeding mechanism is located below the workpiece front and back adjustment mechanism and is used to receive and transport the vertical workpiece falling from the discharge port of the workpiece front and back adjustment mechanism.

[0032] The grinding machine includes a first grinding wheel and a second grinding wheel, and a grinding channel is provided between the first grinding wheel and the second grinding wheel. The discharge end of the rear feeding mechanism is connected to the grinding channel.

[0033] The beneficial effect of adopting the above-mentioned further solution is that the front feeding mechanism of this utility model can arrange the workpieces in a uniform width or length direction and then transport them to one side of the pushing mechanism. A vision inspection mechanism detects the front and back of the workpieces on the front feeding mechanism. The workpiece front and back adjustment mechanism can control the flipping direction based on the detection results of the vision inspection mechanism. After flipping, all workpieces fall into the rear feeding mechanism with the same orientation and are then transported vertically (i.e., in a standing position) into the grinding channel of the grinding machine for grinding. This ensures that each workpiece enters the grinding machine with the same orientation, guaranteeing the consistency of valve plate grinding and the uniformity of surface finish. This invention, by automatically adjusting the front and back of the workpieces, avoids manual intervention and significantly improves production efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0035] Figure 1 This is a three-dimensional structural diagram of the workpiece loading and grinding system of the present invention from a frontal view.

[0036] Figure 2 For the present invention Figure 1A magnified structural diagram of part A;

[0037] Figure 3 This is a three-dimensional structural diagram of the workpiece loading and grinding system of the present invention from a rear view perspective.

[0038] Figure 4 This is a front view of the workpiece loading and grinding system of the present invention;

[0039] Figure 5 This is a partial three-dimensional structural diagram of the workpiece loading and grinding system of the present invention;

[0040] Figure 6 This is a schematic diagram of the pushing mechanism of the workpiece feeding and grinding system of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of the flip-up seat and the outer sleeve according to Embodiment 1 of the present invention;

[0042] Figure 8 This is a schematic diagram of the structure of the flip-up seat and outer sleeve according to Embodiment 2 of the present invention;

[0043] Figure 9 This is a schematic diagram of the structure of the flip-up seat and outer sleeve according to Embodiment 3 of the present invention;

[0044] Figure 10 For the present invention Figure 3 A schematic diagram of the enlarged structure of part B;

[0045] In the diagram, 100 is the front feeding mechanism; 110 is the base; 120 is the vibratory feeder; 121 is the baffle bar; 130 is the front feeding chute; and 131 is the limiting pressure plate.

[0046] 200. Visual inspection agencies;

[0047] 300. Pushing mechanism; 301. Worktable; 302. Motor; 303. Turntable; 304. Guide column; 305. Push plate;

[0048] 400. Workpiece front and back adjustment mechanism; 410. Drive cylinder; 420. Tilting seat; 421. Cross-shaped through groove; 422. Straight through groove; 430. Outer sleeve; 431. Feed port; 432. Discharge port;

[0049] 500. Rear feeding mechanism; 501. Belt conveyor; 502. First limiting plate; 503. Second limiting plate; 504. Rear feeding chute; 505. Height limiting beam;

[0050] 600. Grinding machine; 601. First grinding wheel; 602. Second grinding wheel; 603. Grinding channel;

[0051] 700, Valve plate. Detailed Implementation

[0052] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and do not imply any priority in order or any specific technical meaning. Furthermore, the concepts of "connection" and "linkage" mentioned in this application, unless otherwise specified, are considered to include both direct connection (linkage) and indirect connection (linkage).

[0053] When interpreting the description of this application, it should be clarified that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating directions or positional relationships, are based on the perspective and layout shown in the accompanying drawings. They are intended to facilitate explanation and simplify the description process, and are not absolute limitations on the actual location, construction method, or operating mode of the described device or element. Therefore, these terms should not be construed as restrictive interpretations of the content of this application.

[0054] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0055] Example 1:

[0056] like Figure 1 - Figure 7 As shown, a workpiece feeding and grinding system includes a front feeding mechanism 100, a vision inspection mechanism 200, a pushing mechanism 300, a workpiece front and back adjustment mechanism 400, a rear feeding mechanism 500, and a grinding machine 600. The front feeding mechanism 100 is used to orient the workpieces according to a uniform width or length direction and horizontally transport them below the vision inspection mechanism 200. The vision inspection mechanism 200 is used to detect the front and back of the workpieces located on the front feeding mechanism 100. The pushing mechanism 300 is used to push the workpieces from the front feeding mechanism 100 into the workpiece front and back adjustment mechanism 400. The workpiece front and back adjustment mechanism 400 is used to rotate the workpieces clockwise or counterclockwise to a desired orientation. After being flipped, the workpiece will fall vertically from the discharge port 432 of the workpiece front and back adjustment mechanism 400 into the rear feeding mechanism 500 below. The rear feeding mechanism 500 is located below the workpiece front and back adjustment mechanism 400 and is used to receive and transport the vertical workpiece falling from the discharge port 432 of the workpiece front and back adjustment mechanism 400. The grinding machine 600 includes a first grinding wheel 601 and a second grinding wheel 602. A grinding channel 603 is provided between the first grinding wheel 601 and the second grinding wheel 602. The grinding channel 603 provides a space for the workpiece to undergo surface grinding. The rear feeding mechanism 500 transports the workpiece vertically (i.e., the workpiece is standing upright) into the grinding channel 603.

[0057] In addition, in this embodiment, the workpiece front and back adjustment mechanism 400 includes a drive cylinder 410, a flipping seat 420, and an outer sleeve 430. The drive shaft of the drive cylinder 410 is connected to the flipping seat 420, and the drive cylinder 410 can drive the flipping seat 420 to rotate in both the forward and reverse directions. The flipping seat 420 is provided with a cross-shaped through groove 421. The outer sleeve 430 is sleeved on the outside of the flipping seat 420. The outer sleeve 430 is provided with two inlet / outlet ports, one of which is an inlet port 431 and the other is an outlet port 432. The central angle between the inlet port 431 and the outlet port 432 is set at a 90° angle. The outer sleeve 430 is fixedly installed on the cylinder body of the drive cylinder 410 or on the frame. The flipping seat 420 can rotate inside the outer sleeve 430. The pushing mechanism 300 pushes the workpiece from the feed port 431 into the cross-shaped through groove 421. The drive cylinder 410 drives the flipping seat 420 to rotate clockwise or counterclockwise. The workpiece falls vertically from the discharge port 432 along the cross-shaped through groove 421, ensuring that the workpiece maintains a stable posture during the flipping process. The outer sleeve 430 is provided with an end cap at its end. The outer sleeve 430 enhances the stability of the workpiece during the flipping process, preventing the workpiece from accidentally falling off or shifting due to the flipping action. In addition, the outer sleeve 430 also improves the safety of the workpiece front and back adjustment mechanism 400, reduces direct contact between the workpiece and other parts of the machine, and reduces the risk of workpiece damage or machine malfunction.

[0058] The rear feeding mechanism 500 includes a belt conveyor 501, a first limiting plate 502, and a second limiting plate 503. The first limiting plate 502 and the second limiting plate 503 are arranged opposite each other on both sides of the conveyor belt of the belt conveyor 501. A rear feeding trough 504 is provided between the first limiting plate 502 and the second limiting plate 503. The upper end of the rear feeding trough 504 has a V-shaped opening to facilitate receiving the workpiece. The width of the rear feeding trough 504 is adapted to the width of the workpiece. Under the clamping between the first limiting plate 502 and the second limiting plate 503, the belt conveyor 501 can vertically transport the workpiece to the subsequent processing equipment.

[0059] Above the rear feed chute 504, a height-limiting beam 505 spans the surface. When a workpiece is conveyed in the rear feed chute 504 with its long side upright, it will touch the height-limiting beam 505, causing it to flip over to its short side upright position and continue to be conveyed to subsequent processing equipment. In this way, it ensures that the workpiece enters the subsequent processing flow in the correct orientation.

[0060] The front feeding mechanism 100 includes a base 110, a vibratory feeder 120, and a front feeding trough 130. The vibratory feeder 120 is mounted on the base 110, and a vibrator is provided inside the base 110. A spiral feeding channel is provided inside the vibratory feeder 120. Figure 10 As shown, the spiral feed channel is also equipped with a baffle bar 121, which is used to remove workpieces whose discharge direction does not meet the requirements. The inlet end of the front feed trough 130 is connected to the outlet end of the spiral feed channel. The front feed trough 130 is used to receive workpieces from the vibratory feeder 120 and transport them to the inlet side of the workpiece front and back adjustment mechanism 400. The front feed mechanism 100 is used to orient the workpieces according to a uniform width or length direction and then transport them horizontally to the front feed trough 130, which can ensure that most workpieces are neatly arranged and transported in the correct direction and posture before entering the workpiece front and back adjustment mechanism 400.

[0061] A limiting pressure plate 131 is provided above the front feeding trough 130 to prevent the workpiece from affecting subsequent processing due to jumping or displacement during the conveying process.

[0062] The pushing mechanism 300 includes a worktable 301, a motor 302, a turntable 303, a guide column 304, and a push plate 305. The motor 302 is mounted below the worktable 301, and the turntable 303 is mounted above the worktable 301. The drive shaft of the motor 302 passes through the worktable 301 and connects to the turntable 303. The guide column 304 is mounted on the turntable 303, and the push plate 305 is mounted on the worktable 301 via a slide rail. The push plate 305 has a guide groove, and the guide column 304 is located within the guide groove to push the push plate 305. When the motor 302 drives the turntable 303 to rotate, the guide column 304 moves along the guide groove, thereby pushing the push plate 305 to move back and forth along the slide rail. The guide column 304 drives the push plate 305 to move forward or backward along the slide rail. Due to the cooperation of the guide post 304 and the guide groove, the movement trajectory of the push plate 305 is controlled, avoiding possible deviations during the pushing process. The pushing mechanism 300 can ensure that the push plate 305, driven by the motor 302, stably and accurately pushes the workpiece into the workpiece front and back adjustment mechanism 400 along the predetermined path.

[0063] The following section uses the conveying of a rectangular valve plate (700mm) as an example to detail the working method of the workpiece loading and grinding system:

[0064] The workpiece is placed inside the vibratory feeder 120 of the front feeding mechanism 100. Under the vibration of the vibrator, the rectangular valve plate 700 moves along the spiral feed channel towards the discharge end. When the valve plate 700 approaches the discharge end, it may move in an upright posture with its long or short side tilted. Figure 10 As shown, when the valve plate 700 moves to the position of the stop bar, the stop bar will prevent the valve plate 700 workpiece, which is upright (higher in height) with its long side, from continuing to move forward, thereby eliminating workpieces whose discharge direction does not meet the requirements. The long side of the valve plate 700 is parallel to the conveying direction of the front feeding trough 130. The front feeding trough 130 conveys the valve plate 700 in a horizontal posture along a uniform length direction to the area below the vision inspection mechanism 200.

[0065] The vision inspection mechanism 200 is responsible for inspecting the front and back of the workpiece located on the front feeding mechanism 100, that is, determining whether the front or back of the valve plate 700 is facing up.

[0066] Next, the pushing mechanism 300 begins operation. When a workpiece needs to be pushed, the motor 302 starts, driving the turntable 303 to rotate. As the turntable 303 rotates, the guide post 304 moves along the guide groove on the push plate 305. Under the action of the guide post 304, the push plate 305 moves along a predetermined path, pushing the workpiece from the front feed chute 130 into the cross-shaped through groove 421. When the motor 302 reverses, the push plate 305 will reset in the opposite direction, awaiting the next round of operation.

[0067] Based on the detection results of the vision inspection mechanism 200, the system controls the rotation direction of the workpiece front / back adjustment mechanism 400. For example, when the front of the valve plate 700 is facing up, the drive cylinder 410 drives the tilting seat 420 to rotate 90° clockwise. When the valve plate 700 falls into the rear feeding trough 504 from the discharge port 432, its front will face right and be conveyed in the rear feeding trough 504. Conversely, when the back of the valve plate 700 is facing up, the drive cylinder 410 drives the tilting seat 420 to rotate 90° counterclockwise, ensuring that when the valve plate 700 falls into the rear feeding trough 504 from the discharge port 432, its front will also face right. Therefore, the workpiece front / back adjustment mechanism 400 can not only flip the workpiece to an upright position, but also ensure that the front or back orientation of all workpieces remains consistent.

[0068] Finally, the flipped valve plate 700 falls into the rear feeding mechanism 500 and is transported by the rear feeding mechanism 500 to the grinding channel 603 of the grinder 600 for grinding.

[0069] Of course, the present invention can also transport workpieces of other shapes such as round and square. The transport method is similar to the method of transporting rectangular valve plate 700, and will not be described in detail here.

[0070] The workpiece feeding and grinding system of the present invention not only ensures that the front of each valve plate 700 faces the grinding wheel on the same side, thus ensuring the consistency of grinding and the uniformity of surface finish of the valve plate 700; at the same time, by automatically adjusting the front and back of the workpiece, manual intervention is avoided and production efficiency is improved.

[0071] Example 2:

[0072] like Figure 8 As shown, the difference between this embodiment and Embodiment 1 is that the flip base 420 is provided with a through groove 422, and the two ends of the through groove 422 are connected. The other structures of this embodiment are the same as those of Embodiment 1, and will not be described again here.

[0073] The working method of the workpiece front and back adjustment mechanism 400 in this embodiment is as follows: The pushing mechanism 300 pushes the valve plate 700 from one end of the straight through groove 422 into the straight through groove 422. When the front of the valve plate is facing up, the drive cylinder 410 drives the flipping seat 420 to rotate 90° clockwise. When the valve plate 700 falls from the discharge port 432 into the rear feeding groove 504, its front will face right and stand upright in the rear feeding groove 504 for conveying. Then, the drive cylinder 410 drives the flipping seat 420 to rotate 90° counterclockwise to reset and wait for the next flipping plate. Conversely, when the back of the valve plate 700 is facing up, the drive cylinder 410 drives the flipping seat 420 to rotate 90° counterclockwise to ensure that when the valve plate 700 falls from the discharge port 432 into the rear feeding groove 504, its front is also facing right. Then, the drive cylinder 410 drives the flipping seat 420 to rotate 90° clockwise to reset and wait for the next flipping plate.

[0074] Example 3:

[0075] like Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that both the outer sleeve 430 and the tilting seat 420 are mounted on the drive shaft of the drive cylinder 410, and the outer sleeve 430 and the tilting seat 420 rotate synchronously. The outer sleeve 430 is provided with four inlet / outlet ports. The other structures of this embodiment are the same as those of Embodiment 1, and will not be described again here. The synchronous rotation of the outer sleeve 430 and the tilting seat 420 gives the workpiece front and back adjustment mechanism 400 greater flexibility and adaptability. The rotation angle of the outer sleeve 430 and the tilting seat 420 can be adjusted according to actual needs, thereby meeting different workpiece tilting and conveying requirements. Whether the outer sleeve 430 is fixedly installed or rotates synchronously with the tilting seat 420, it can be selected according to actual needs, thereby meeting different application scenarios and workpiece tilting requirements.

[0076] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A workpiece face adjusting mechanism characterized by comprising: The device comprises a driving cylinder (410) and a turnover seat (420), the driving shaft of the driving cylinder (410) is connected with the turnover seat (420), the driving cylinder (410) can drive the turnover seat (420) to rotate forward and / or reversely, and the turnover seat (420) is internally provided with a horizontal I-shaped through groove.

2. The workpiece face adjusting mechanism according to claim 1, characterized by, The turnover seat (420) is further internally provided with a vertical I-shaped through groove, and the horizontal I-shaped through groove and the vertical I-shaped through groove form a cross-shaped through groove (421).

3. The workpiece face adjusting mechanism according to claim 2, wherein The device further comprises an outer sleeve (430), the outer sleeve (430) is sleeved outside the turnover seat (420), and at least two feeding / discharge ports are arranged on the outer sleeve (430).

4. The workpiece face adjusting mechanism according to claim 3, wherein The included angle of the central angles between adjacent two feeding / discharge ports is 90°.

5. The workpiece face adjusting mechanism according to claim 3, wherein The outer sleeve (430) is fixedly installed on the cylinder body of the driving cylinder (410) or a rack.

6. The workpiece face adjusting mechanism according to claim 3, wherein The outer sleeve (430) and the turnover seat (420) are drivenly connected with the driving shaft of the driving cylinder (410), and the outer sleeve (430) and the turnover seat (420) can synchronously rotate.

7. The workpiece face adjusting mechanism according to claim 1, wherein The turnover seat (420) is a cylindrical body, and the cylindrical body is provided with an I-shaped through groove (422).

8. The workpiece face adjusting mechanism according to claim 2, wherein The turnover seat (420) is a cylindrical body, and the cylindrical body is provided with a cross-shaped through groove (421).

9. The workpiece face adjusting mechanism according to claim 7 or 8, wherein The cylindrical body is provided with a hollow part.

10. A workpiece loading and polishing system, comprising: The device comprises a front feeding mechanism (100), a visual detection mechanism (200), a pushing mechanism (300), a rear feeding mechanism (500) and a grinding machine (600), and further comprises the workpiece front / rear surface adjusting mechanism (400) according to any one of claims 1-9, The front feeding mechanism (100) is used for conveying workpieces to below the visual detection mechanism (200). The visual detection mechanism (200) is used for detecting the front / rear surface of the workpiece located on the front feeding mechanism (100). The pushing mechanism (300) is used for pushing the workpiece from the front feeding mechanism (100) to the workpiece front / rear surface adjusting mechanism (400), and the workpiece front / rear surface adjusting mechanism (400) is used for overturning the workpiece clockwise or counterclockwise. The rear feeding mechanism (500) is arranged below the workpiece front / rear surface adjusting mechanism (400) and is used for receiving and conveying the vertical workpiece falling from the discharge port (432) of the workpiece front / rear surface adjusting mechanism (400). The grinding machine (600) comprises a first grinding wheel (601) and a second grinding wheel (602), a grinding channel (603) is arranged between the first grinding wheel (601) and the second grinding wheel (602), and the discharge end of the rear feeding mechanism (500) is in communication with the grinding channel (603).

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