Double-sided grinding machine with automatic loading and unloading mechanism

Abstract

The invention discloses a double-sided grinder with an automatic loading and unloading mechanism. By arranging a loading mechanism and an unloading mechanism, automatic loading and unloading of workpieces can be realized. When loading, the workpiece is sent into a clamping and positioning mechanism through a first sliding seat. When processing the workpiece, the unloading mechanism is withdrawn from between the clamping and positioning mechanism and the first main body to avoid interference with the movement of the clamping and positioning mechanism toward the first main body. When unloading, the unloading mechanism slides between the clamping and positioning mechanism and the first main body to realize automatic unloading. The double-sided grinder has high processing efficiency and high safety factor.

Description

Technical Field

[0001] The invention relates to a double-sided grinding machine with an automatic loading and unloading mechanism. Background Art

[0002] In the existing double-sided grinder for processing vises, the vise is generally manually loaded into the fixture, and then the processing surface is grinded by a grinding wheel. After the processing is completed, the vise is manually taken out. This results in low processing efficiency and low safety factor. Summary of the invention

[0003] The purpose of the present invention is to provide a double-sided grinding machine with an automatic loading and unloading mechanism, which has high processing efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A double-sided grinder with an automatic loading and unloading mechanism comprises a machine tool, a loading mechanism and an unloading mechanism arranged in sequence along a first direction parallel to the machine tool, a processing mechanism arranged in sequence along the first direction parallel to the machine tool and a first body having a processing cavity, and a clamping and positioning mechanism arranged on the machine tool and arranged in a first direction perpendicular to the first body;

[0006] The feeding mechanism comprises a first mounting seat arranged on the machine tool, a blanking trough arranged on the first mounting seat and spaced apart between the bottom and the first mounting seat, a first sliding seat slidable in a first direction and arranged between the blanking trough and the first mounting seat and used to carry the workpiece, and a first driving cylinder arranged on the first mounting seat and used to drive the first sliding seat to move;

[0007] The material discharge mechanism comprises a material discharge chute provided on the machine tool and capable of sliding in a direction parallel to the first direction, and a second driving cylinder provided on the machine tool and used for driving the material discharge chute to move;

[0008] The clamping and positioning mechanism is slidably arranged on the machine tool along a vertical first direction and has a loading and unloading position and a processing position:

[0009] When the clamping and positioning mechanism is at the loading and unloading position and is used for loading, it is used to position and clamp the workpiece pushed in by the first sliding seat;

[0010] When the clamping and positioning mechanism is in the processing position, the second driving cylinder is used to drive the unloading chute to move in the reverse direction along the first direction, and the clamping and positioning mechanism is used to slide between the loading mechanism and the unloading mechanism, and deliver the workpiece into the first body;

[0011] When the clamping and positioning mechanism is in the loading and unloading position and is used for unloading, the second driving cylinder is used to drive the unloading chute to move forward in the first direction, so that it slides between the clamping and positioning mechanism and the first body and is located directly below the workpiece.

[0012] Preferably, the clamping and positioning mechanism comprises a second mounting seat provided on the machine tool, a second sliding seat provided on the second mounting seat and capable of sliding along a direction perpendicular to the first direction, and a third driving cylinder provided on the second sliding seat and capable of rotating around its own axis, wherein the axis direction of the third driving cylinder is perpendicular to the first direction;

[0013] The third driving cylinder comprises a first cylinder body and a first push rod which is retractable along the direction of its own length and is arranged in the first cylinder body;

[0014] The clamping and positioning mechanism also includes a first clamping block and a second clamping block for mutually cooperating to clamp the workpiece and respectively rotatably connected to the first cylinder body, a first connecting rod rotatably connected to the first push rod and the first clamping block at both ends, and a second connecting rod rotatably connected to the first push rod and the second clamping block at both ends;

[0015] The rotation axis lines of the first clamping block and the second clamping block, and the rotation axis lines at both ends of the first connecting rod and the second connecting rod are parallel to each other and parallel to the first direction.

[0016] More preferably, when the clamping and positioning mechanism is in the loading and unloading position and is used for loading, the first clamping block and the second clamping block are arranged in the up-down direction;

[0017] When the clamping and positioning mechanism is in the processing position, the first clamping block and the second clamping block are arranged in a horizontal direction;

[0018] When the clamping and positioning mechanism is at the loading and unloading position and is used for unloading, the first clamping block and the second clamping block are arranged in a horizontal direction.

[0019] More preferably, the first cylinder comprises a first body, a first mounting member and a second mounting member connected to one end of the first body and arranged with the first push rod in a first direction, and the first clamping block and the second clamping block are rotatably connected to the first mounting member and the second mounting member respectively;

[0020] The first mounting member is located at a side of the first push rod away from the feeding mechanism, and the second mounting member is located at a side of the first push rod close to the feeding mechanism.

[0021] More preferably, the clamping and positioning mechanism further comprises a first positioning plate connected to the first mounting member, the first sliding seat comprises a bottom plate for carrying the workpiece, and a second positioning plate protruding from the upper surface of the bottom plate, and the first positioning plate and the second positioning plate are provided with contoured positioning surfaces for cooperating with and abutting against the two sides of the workpiece on both sides of the first positioning plate and the second positioning plate close to each other;

[0022] The upper surface of the bottom plate is lower than the lower surface of the first positioning plate. Preferably, the upper surface of the first positioning plate is lower than the upper surface of the workpiece.

[0023] More preferably, the clamping and positioning mechanism further comprises a fourth driving cylinder disposed on the second sliding seat, the fourth driving cylinder comprising a second cylinder body rotatably connected to the second sliding seat, a second push rod which can be extended and retracted along its own length and is disposed in the second cylinder body, and the second push rod is rotatably connected to the second mounting member;

[0024] The rotation axes of the second cylinder body and the second push rod are parallel to each other and perpendicular to the first direction. Preferably, the fourth drive cylinder is located on a side of the clamping and positioning mechanism away from the feeding mechanism.

[0025] Preferably, the processing mechanism comprises two groups of processing components respectively arranged on both sides of the first main body, each group of the processing components comprises a third mounting seat arranged on the machine tool, a third sliding seat arranged on the third mounting seat and capable of sliding in a direction parallel to the first direction, a grinding wheel arranged on the third sliding seat and capable of rotating around its own axis, and a driving motor arranged on the third sliding seat and used for driving the grinding wheel to rotate;

[0026] The axis of the grinding wheel is parallel to the first direction.

[0027] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention is a double-sided grinder with an automatic loading and unloading mechanism, which can realize automatic loading and unloading of workpieces by setting a loading mechanism and an unloading mechanism; when loading, the workpiece is sent into the clamping and positioning mechanism through the first sliding seat; when processing the workpiece, the unloading mechanism is withdrawn from between the clamping and positioning mechanism and the first main body to avoid interfering with the movement of the clamping and positioning mechanism toward the first main body; when unloading, the unloading mechanism slides between the clamping and positioning mechanism and the first main body to realize automatic unloading; the double-sided grinder has high processing efficiency and high safety factor. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Attached Figure 1 is a structural schematic diagram of a double-sided grinding machine according to a specific embodiment of the present invention;

[0029] Attached Figure 2 For attachment Figure 1Left view of;

[0030] Attached Figure 3 For attachment Figure 1 Top view of the .

[0031] Among them: 1. Machine tools;

[0032] 2. Feeding mechanism; 21. First mounting seat; 22. Material drop chute; 23. First sliding seat; 231. Bottom plate; 232. Second positioning plate; 24. First driving cylinder;

[0033] 3. Material discharge mechanism; 31. Material discharge chute; 32. Second driving cylinder;

[0034] 4. Processing mechanism; 41. Processing assembly; 411. Third mounting seat; 412. Third sliding seat; 413. Driving motor;

[0035] 5. The first subject;

[0036] 6. Clamping and positioning mechanism; 61. Second mounting seat; 62. Second sliding seat; 63. Third driving cylinder; 631. First cylinder body; 6311. First body; 6312. First mounting member; 6313. Second mounting member; 632. First push rod; 64. First clamping block; 65. Second clamping block; 66. First connecting rod; 67. Second connecting rod; 68. First positioning plate; 69. Fourth driving cylinder; 691. Second cylinder body; 692. Second push rod. DETAILED DESCRIPTION

[0037] The technical solution of the present invention is further described below in conjunction with specific embodiments and drawings.

[0038] See also Figure 1-3 As shown, this embodiment provides a double-sided grinding machine with an automatic loading and unloading mechanism 3, including a machine tool 1, a first direction parallel to the first direction (i.e. Figure 1 A loading mechanism 2 and a discharging mechanism 3 arranged on the machine tool 1 are arranged in sequence along the first direction (in the direction of the arrow in the figure), a processing mechanism 4 and a first body 5 having a processing cavity arranged in sequence along a first direction parallel to the machine tool 1, and a clamping and positioning mechanism 6 arranged on the machine tool 1 and arranged along a first direction perpendicular to the first body 5. The clamping and positioning mechanism 6 is arranged on the machine tool 1 so as to be slidable along the first direction perpendicular to the first direction, and the discharging mechanism 3 is arranged on the machine tool 1 so as to be slidable along the first direction parallel to the first direction.

[0039] The clamping and positioning mechanism 6 has loading and unloading positions and processing positions:

[0040] When the clamping and positioning mechanism 6 is in the loading and unloading position and is used for loading, it is used to position and clamp the workpiece fed by the loading mechanism 2;

[0041] When the clamping and positioning mechanism 6 is in the processing position, the unloading mechanism 3 moves in the opposite direction of the first direction, the clamping and positioning mechanism 6 slides between the loading mechanism 2 and the unloading mechanism 3, and delivers the workpiece into the first body 5;

[0042] When the clamping and positioning mechanism 6 is in the loading and unloading position and is used for unloading, the clamping and positioning mechanism 6 slides to reset, and the unloading chute 31 moves in the positive direction along the first direction, slides to between the clamping and positioning mechanism 6 and the first main body 5, and is located directly below the workpiece, for receiving the workpiece falling from the clamping and positioning mechanism 6.

[0043] The above-mentioned loading mechanism 2 includes a first mounting seat 21 arranged on the machine tool 1, a blanking trough 22 arranged on the first mounting seat 21 and spaced between the bottom and the first mounting seat 21, a first sliding seat 23 that can slide along a first direction parallel to the blanking trough 22 and the first mounting seat 21 and is used to carry the workpiece, and a first driving cylinder 24 that is arranged on the first mounting seat 21 and is used to drive the first sliding seat 23 to move.

[0044] See also Figure 1 As shown, the bottoms on both sides of the blanking chute 22 arranged along the first direction are spaced apart from the upper surface of the first mounting seat 21, and the bottoms on both sides of the blanking chute 22 arranged along the first direction perpendicular to the first direction are connected to the first mounting seat 21. The blanking chute 22 extends in the up and down directions and is used to place multiple workpieces stacked up and down in sequence. In this embodiment, the workpiece is a vise.

[0045] The first sliding seat 23 includes a bottom plate 231 for carrying a workpiece, a protruding portion 234 on the right side of the upper surface of the bottom plate 231 (i.e. Figure 3 The second positioning plate 232 is provided with a second positioning plate 232 on the left side thereof, and a contoured positioning surface is provided on the left side thereof to abut against the right side of the workpiece. The workpiece in the blanking chute 22 falls onto the bottom plate 231, and the first sliding seat 23 pushes the workpiece into the clamping positioning mechanism 6. At this time, the left side of the second positioning plate 232 is used to limit the workpiece, and the upper surface of the second positioning plate 232 is used to prevent the workpiece from continuing to fall from the blanking chute 22.

[0046] The material discharge mechanism 3 comprises a material discharge chute 31 disposed on the machine tool 1 and slidable in parallel with the first direction, and a second driving cylinder 32 disposed on the machine tool 1 and used for driving the material discharge chute 31 to move.

[0047] See also Figure 1 As shown, the material discharge chute 31 includes an upper section extending up and down along a first direction and a lower section extending up and down along a direction perpendicular to the first direction, and the bottom end of the upper section is connected and communicated with the top end of the lower section. The upper section is used to receive the workpiece dropped from the clamping and positioning mechanism 6, and the second driving cylinder 32 is used to drive the lower section to move along the first direction.

[0048] In order to prevent the unloading chute 31 from interfering with the movement of the clamping and positioning mechanism 6 to deliver the workpiece into the first body 5, it is necessary to drive the upper section to slide in the reverse direction along the first direction so that the upper section is no longer located between the clamping and positioning mechanism 6 and the first body 5; when unloading, it is necessary to drive the upper section to slide in the forward direction along the first direction so that the upper section is located between the clamping and positioning mechanism 6 and the first body 5, and is located below the workpiece to receive the workpiece falling from the clamping and positioning mechanism 6.

[0049] The processing mechanism 4 includes two groups of processing components 41 respectively arranged on both sides of the first main body 5, each group of processing components 41 includes a third mounting seat 411 arranged on the machine tool 1, a third sliding seat 412 arranged on the third mounting seat 411 and capable of sliding along a direction parallel to the first direction, a grinding wheel (not shown in the figure) arranged on the third sliding seat 412 and capable of rotating around its own axis, and a driving motor 413 arranged on the third sliding seat 412 and used to drive the grinding wheel to rotate, wherein the axis of the grinding wheel is parallel to the first direction. The processing components 41 on one side, the first main body 5, and the processing components 41 on the other side are arranged in sequence along the direction parallel to the first direction.

[0050] See also Figure 1 As shown, through holes are provided on the three sides of the first body 5 facing the two groups of machining components 41 and the clamping and positioning mechanism 6, respectively, for allowing the grinding wheels and workpieces on both sides to enter the machining cavity respectively, so as to synchronously machine the workpieces by the grinding wheels on both sides.

[0051] The clamping and positioning mechanism 6 comprises a second mounting seat 61 disposed on the machine tool 1, a second sliding seat 62 disposed on the second mounting seat 61 and capable of sliding along a perpendicular first direction, and a third driving cylinder 63 disposed on the second sliding seat 62 and capable of rotating about its own axis, wherein the axis direction of the third driving cylinder 63 is perpendicular to the first direction. The third driving cylinder 63 comprises a first cylinder body 631 disposed on the second sliding seat 62 and capable of rotating about its own axis, and a first push rod 632 disposed in the first cylinder body 631 and capable of extending and retracting along its own length extension direction, wherein the first cylinder body 631 does not move relative to the second sliding seat 62 along the axial direction.

[0052] See also Figure 2-3 As shown, the first cylinder body 631 includes a cylindrical first body 6311, a first mounting member 6312 and a second mounting member 6313 connected to one end of the first body 6311 along a vertical first direction, and the first mounting member 6312 and the second mounting member 6313 are connected to one end of the first body 6311 facing the first main body 5. The first mounting member 6312, the first push rod 632, and the second mounting member 6313 are arranged at intervals along the first direction. Among them, the first mounting member 6312 is located on the side of the first push rod 632 away from the feeding mechanism 2, and the second mounting member 6313 is located on the side of the first push rod 632 close to the feeding mechanism 2.

[0053] The first mounting member 6312 is provided with a first positioning plate 68, which is located at the front end of the first body 6311 (see Figure 3 As shown, Figure 3 In the front of the figure, the first positioning plate 68 is located on the left side of the bottom plate 231, and the right side of the first positioning plate 68 is provided with a contoured positioning surface for cooperating with the left side of the workpiece. The upper surface of the bottom plate 231 is lower than the lower surface of the first positioning plate 68. Through this arrangement, when the first sliding seat 23 pushes the workpiece to move to the left, the left side of the workpiece presses against the right side of the first positioning plate 68, and then the right side of the workpiece presses against the left side of the second positioning plate 232. The two cooperate with each other to achieve the positioning of the workpiece.

[0054] The upper surface of the first positioning plate 68 is lower than the upper surface of the workpiece. With this arrangement, since the workpiece is flipped 90° and then sent into the first body 5 for processing, the upper and lower surfaces of the first positioning plate 68 can be prevented from being processed by a grinding wheel.

[0055] See also Figure 1 , Figure 2 As shown, the clamping and positioning mechanism 6 also includes a first clamping block 64 and a second clamping block 65 for clamping the workpiece in cooperation with each other. The first clamping block 64 is rotatably connected to the first mounting member 6312, and the second clamping block 65 is rotatably connected to the second mounting member 6313, and the two can be rotated together or rotated apart.

[0056] The clamping and positioning mechanism 6 further includes a first connecting rod 66 whose two ends are rotatably connected to the first push rod 632 and the first clamping block 64, and a second connecting rod 67 whose two ends are rotatably connected to the first push rod 632 and the second clamping block 65. The rotation axis of the first clamping block 64 and the second clamping block 65, the rotation axis of the two ends of the first connecting rod 66, and the rotation axis of the two ends of the second connecting rod 67 are parallel to each other and parallel to the first direction.

[0057] See also Figure 2 As shown, the first clamp block 64 is located above the second clamp block 65, the hinge point between the first connecting rod 66 and the first clamp block 64 is higher than the hinge point between the first clamp block 64 and the first mounting member 6312, and the hinge point between the second connecting rod 67 and the second clamp block 65 is lower than the hinge point between the second clamp block 65 and the second mounting member 6313.

[0058] With this arrangement, when the first push rod 632 is extended, the first clamp block 64 and the second clamp block 65 rotate and close to clamp the workpiece; when the first push rod 632 is retracted, the first clamp block 64 and the second clamp block 65 rotate and open to release the workpiece.

[0059] See also Figure 3As shown, the clamping and positioning mechanism 6 further includes a fourth drive cylinder 69 disposed on the second sliding seat 62, the fourth drive cylinder 69 includes a second cylinder body 691 whose left end is rotatably connected to the second sliding seat 62, a second push rod 692 which can be extended and retracted along its own length and is disposed in the second cylinder body 691, and the right end of the second push rod 692 is rotatably connected to the second mounting member 6313. The rotation axis lines of the second cylinder body 691 and the second push rod 692 are parallel to each other and perpendicular to the first direction. The fourth drive cylinder 69 is located on the left side of the clamping and positioning mechanism 6.

[0060] Since the positioning of the workpiece (vice) is achieved through the left and right sides, and the double-sided grinder is used to process its upper and lower surfaces. Therefore, it is necessary to rotate the third drive cylinder 63 as a whole by 90° through the fourth drive cylinder 69. Before flipping, the workpiece is positioned through the left and right sides that do not need to be processed, and the positioning accuracy is high; after flipping, the upper and lower surfaces of the workpiece before flipping are milled simultaneously in cooperation with the processing mechanism 4. The two sets of processing components 41 actually process the workpiece synchronously from the left and right directions, and the processing accuracy is high. The orientation change of the workpiece between positioning and processing is realized by flipping, which effectively ensures the positioning accuracy and processing accuracy.

[0061] When the clamping and positioning mechanism 6 is in the loading and unloading position and is used for loading, the first clamping block 64 and the second clamping block 65 are arranged in the up-down direction to clamp the first sliding seat 23 and push the workpiece therebetween;

[0062] When the clamping and positioning mechanism 6 is in the processing position, the first clamping block 64 and the second clamping block 65 are arranged in the horizontal direction, the second driving cylinder 32 is used to drive the unloading chute 31 to move in the opposite direction of the first direction, and the clamping and positioning mechanism 6 is used to slide between the loading mechanism 2 and the unloading mechanism 3, and feed the workpiece into the first body 5;

[0063] When the above-mentioned clamping and positioning mechanism 6 is in the loading and unloading position and is used for unloading, the first clamping block 64 and the second clamping block 65 are arranged in the horizontal direction, the clamping and positioning mechanism 6 slides and resets, and the second driving cylinder 32 is used to drive the unloading chute 31 to move in the positive direction along the first direction, so that it slides between the clamping and positioning mechanism 6 and the first main body 5, and is located directly below the workpiece.

[0064] The first direction and the perpendicular first direction described in this embodiment are both parallel to the horizontal plane.

[0065] The working process of this embodiment is described in detail below:

[0066] First, the first driving cylinder 24 drives the first sliding seat 23 to push the workpiece dropped from the blanking chute 22 onto the bottom plate 231 to the side of the first positioning plate 68 until the side of the second positioning plate 232 also presses against the workpiece, and the positioning of the workpiece is completed at this time;

[0067] Secondly, the third driving cylinder 63 drives the first clamping block 64 and the second clamping block 65 to rotate, close and clamp the workpiece, and then the first sliding seat 23 is reset;

[0068] Next, the fourth driving cylinder 69 drives the third driving cylinder 63 to turn over 90 degrees as a whole, and the second sliding seat 62 delivers the workpiece into the first main body 5, and the processing components 41 on both sides synchronously process both sides of the workpiece;

[0069] Finally, the second sliding seat 62 slides back to its original position, and the second driving cylinder 32 drives the feed chute 31 to move in the positive direction along the first direction, and slides between the clamping and positioning mechanism 6 and the first main body 5, and is located directly below the workpiece. The third driving cylinder 63 drives the first clamp block 64 and the second clamp block 65 to rotate and open, so that the workpiece falls downward into the feed chute 31.

[0070] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-sided grinder with an automatic loading and unloading mechanism, characterized in that: It comprises a machine tool, a loading mechanism and a unloading mechanism arranged in sequence along a first direction parallel to the machine tool, a processing mechanism arranged in sequence along the first direction parallel to the machine tool and a first body having a processing cavity, and a clamping and positioning mechanism arranged on the machine tool and arranged in a first direction perpendicular to the first body; The feeding mechanism comprises a first mounting seat arranged on the machine tool, a blanking trough arranged on the first mounting seat and spaced apart between the bottom and the first mounting seat, a first sliding seat slidable in a first direction and arranged between the blanking trough and the first mounting seat and used to carry the workpiece, and a first driving cylinder arranged on the first mounting seat and used to drive the first sliding seat to move; The material discharge mechanism comprises a material discharge chute provided on the machine tool and capable of sliding in a direction parallel to the first direction, and a second driving cylinder provided on the machine tool and used for driving the material discharge chute to move; The clamping and positioning mechanism is slidably arranged on the machine tool along a vertical first direction and has a loading and unloading position and a processing position: When the clamping and positioning mechanism is at the loading and unloading position and is used for loading, it is used to position and clamp the workpiece pushed in by the first sliding seat; When the clamping and positioning mechanism is in the processing position, the second driving cylinder is used to drive the unloading chute to move in the reverse direction along the first direction, and the clamping and positioning mechanism is used to slide between the loading mechanism and the unloading mechanism, and deliver the workpiece into the first body; When the clamping and positioning mechanism is at the loading and unloading position and is used for unloading, the second driving cylinder is used to drive the unloading chute to move in the first direction so that it slides between the clamping and positioning mechanism and the first body and is located directly below the workpiece; The clamping and positioning mechanism comprises a second mounting seat provided on the machine tool, a second sliding seat provided on the second mounting seat and capable of sliding along a direction perpendicular to the first direction, and a third driving cylinder provided on the second sliding seat and capable of rotating around its own axis, wherein the axis direction of the third driving cylinder is perpendicular to the first direction; The third driving cylinder comprises a first cylinder body and a first push rod which is retractable along its own length and is arranged in the first cylinder body; The clamping and positioning mechanism also includes a first clamping block and a second clamping block for mutually cooperating to clamp the workpiece and respectively rotatably connected to the first cylinder body, a first connecting rod rotatably connected to the first push rod and the first clamping block at both ends, and a second connecting rod rotatably connected to the first push rod and the second clamping block at both ends; The rotation axis lines of the first clamping block and the second clamping block, and the rotation axis lines at both ends of the first connecting rod and the second connecting rod are parallel to each other and parallel to the first direction; When the clamping and positioning mechanism is at the loading and unloading position and is used for loading, the first clamping block and the second clamping block are arranged in the up-down direction; When the clamping and positioning mechanism is in the processing position, the first clamping block and the second clamping block are arranged in a horizontal direction; When the clamping and positioning mechanism is at the loading and unloading position and is used for unloading, the first clamping block and the second clamping block are arranged in a horizontal direction; The first cylinder body comprises a first body, a first mounting member and a second mounting member connected to one end of the first body and arranged with the first push rod in a first direction, and the first clamping block and the second clamping block are rotatably connected to the first mounting member and the second mounting member respectively; The first mounting member is located at a side of the first push rod away from the feeding mechanism, and the second mounting member is located at a side of the first push rod close to the feeding mechanism.

2. A double-sided grinder with an automatic loading and unloading mechanism according to claim 1, characterized in that: The clamping and positioning mechanism also includes a first positioning plate connected to the first mounting member, the first sliding seat includes a bottom plate for carrying the workpiece, and a second positioning plate protruding from the upper surface of the bottom plate, and the first positioning plate and the second positioning plate are respectively provided with contoured positioning surfaces for cooperating and abutting against the two sides of the workpiece on both sides close to each other; The upper surface of the bottom plate is lower than the lower surface of the first positioning plate.

3. A double-sided grinder with an automatic loading and unloading mechanism according to claim 2, characterized in that: An upper surface of the first positioning plate is lower than an upper surface of the workpiece.

4. A double-sided grinder with an automatic loading and unloading mechanism according to claim 1, characterized in that: The clamping and positioning mechanism further comprises a fourth driving cylinder disposed on the second sliding seat, the fourth driving cylinder comprising a second cylinder body rotatably connected to the second sliding seat, a second push rod which can be extended and retracted along its own length and is disposed in the second cylinder body, and the second push rod is rotatably connected to the second mounting member; The rotation axes of the second cylinder body and the second push rod are parallel to each other and perpendicular to the first direction.

5. A double-sided grinder with an automatic loading and unloading mechanism according to claim 4, characterized in that: The fourth driving cylinder is located at a side of the clamping and positioning mechanism away from the feeding mechanism.

6. The double-sided grinder with automatic loading and unloading mechanism according to claim 1, characterized in that: The processing mechanism comprises two groups of processing components respectively arranged on both sides of the first main body, each group of the processing components comprises a third mounting seat arranged on the machine tool, a third sliding seat arranged on the third mounting seat and capable of sliding in a direction parallel to the first direction, a grinding wheel arranged on the third sliding seat and capable of rotating around its own axis, and a driving motor arranged on the third sliding seat and used for driving the grinding wheel to rotate; The axis of the grinding wheel is parallel to the first direction.

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