Device for automatically detecting plane size

Abstract

A device for automatically detecting the plane size is arranged on one side of an assembly line carrying workpieces and comprises a workbench, and a feeding manipulator, a first positioning seat, a first detection mechanism, an overturning manipulator, a second detection mechanism, a second positioning seat and a material returning manipulator which are sequentially fixed on the workbench along the flowing direction of the assembly line, the first detection mechanism comprises a first image sensor, the second detection mechanism comprises a second image sensor, and the first image sensor and the second image sensor detect the sizes of different planes of a workpiece respectively. The transfer manipulator transfers workpieces on the first positioning seat, the first detection mechanism, the turnover manipulator and the second detection mechanism, and comprises a first electric guide rail, and a pair of first clamping arms, a pair of second clamping arms, a pair of third clamping arms and a pair of fourth clamping arms which are movably arranged on the first electric guide rail; the first motorized guide rail extends in a flow direction parallel to the assembly line.

Description

Technical Field

[0001] The utility model relates to the field of workpiece detection, in particular to a device for automatically detecting plane dimensions. Background Art

[0002] With the development of technology, in order to meet the requirements of special parts, specific parameters need to be tested after parts processing, such as the plane dimensions of different surfaces in the workpiece. At present, most companies still use manual loading and unloading and workpiece testing, which is costly, unsafe, inefficient and low in automation.

[0003] In addition, manual inspection of workpieces can easily lead to misjudgment, causing defective products to flow into the next process, greatly affecting subsequent processes and even increasing the defective rate of products.

[0004] Therefore, in view of the current problem of manual loading and unloading and inspection of workpieces, it is urgent to develop a new machine or new technology to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an automatic plane size detection device to solve the problem of currently loading and unloading materials and detecting workpieces manually.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A device for automatically detecting plane dimensions is arranged on one side of an assembly line carrying workpieces, comprising a workbench and a feeding robot, a first positioning seat, a first detection mechanism, a flipping robot, a second detection mechanism, a second positioning seat, and a material returning robot which are fixed on the workbench in sequence along the flow direction of the assembly line, wherein the first detection mechanism comprises a first image sensor, and the second detection mechanism comprises a second image sensor, and the first image sensor and the second image sensor respectively detect the dimensions of different planes of the workpiece, and the device for automatically detecting plane dimensions also comprises a transfer robot which is arranged on the workbench and is used for transferring the workpieces on the first positioning seat, the first detection mechanism, the flipping robot, and the second detection mechanism, and the transfer robot comprises a first electric guide rail and a pair of first clamping arms, a pair of second clamping arms, a pair of third clamping arms, and a pair of fourth clamping arms which are movably arranged on the first electric guide rail, and the first electric guide rail extends in a direction parallel to the flow direction of the assembly line.

[0008] Furthermore, the spacing between the symmetry axes of the pair of first clamp arms and the pair of second clamp arms, the spacing between the symmetry axes of the pair of second clamp arms and the pair of third clamp arms, and the spacing between the symmetry axes of the pair of third clamp arms and the pair of fourth clamp arms are all kept equal.

[0009] Furthermore, the transfer robot also includes a connecting plate and four first cylinders. The connecting plate is movably arranged on the first electric guide rail. During operation, the connecting plate slides on the first electric guide rail. The four first cylinders are fixed on one end of the connecting plate close to the flipping robot. Each first cylinder has a first movable end, and a pair of first clamping arms, a pair of second clamping arms, a pair of third clamping arms, and a pair of fourth clamping arms are respectively movably connected to the four first movable ends.

[0010] Furthermore, the flipping robot includes a second cylinder having a rotating end, a third cylinder installed on the rotating end and a pair of fifth clamping arms, the third cylinder has a second movable end, and the pair of fifth clamping arms are movably connected to the second movable end; when working, the third cylinder rotates following the rotating end of the second cylinder, and the pair of fifth clamping arms follows the movement of the third cylinder, and the rotation angle of the rotating end of the second cylinder is 180° each time.

[0011] Furthermore, the first detection mechanism also includes a first base and a first fixing frame, the first base and the first fixing frame are respectively fixed on the workbench, and the first image sensor is installed on the first fixing frame and is located above the first base; the second detection mechanism also includes a second base and a second fixing frame, the second base and the second fixing frame are respectively fixed on the workbench, and the second image sensor is installed on the second fixing frame and is located above the second base.

[0012] Furthermore, a first positioning groove is formed on the upper surface of the first positioning seat corresponding to the workpiece, and a second positioning groove is formed on the upper surface of the second positioning seat corresponding to the workpiece.

[0013] Furthermore, the feeding robot includes a second electric guide rail, a first clamping part and a first sensor. The second electric guide rail extends horizontally along a flow direction perpendicular to the assembly line and its end is located above the assembly line. The first sensor is installed on one end of the second electric guide rail close to the assembly line, and the first clamping part is movably arranged on the second electric guide rail.

[0014] Furthermore, the material return robot includes a third electric guide rail, a second clamping part and a second sensor. The third electric guide rail extends horizontally along a flow direction perpendicular to the assembly line and its end is located above the assembly line. The second sensor is installed on one end of the third electric guide rail away from the assembly line, and the second clamping part is movably arranged on the third electric guide rail.

[0015] Furthermore, the automatic plane dimension detection device also includes a feed positioning mechanism, which is installed on a workbench and located above the assembly line. The feed positioning mechanism includes a pair of positioning arms, and the pair of positioning arms form a feed channel. The feed channel has a guide section and a positioning section. The guide section of the feed channel gradually converges along the flow direction of the assembly line, and the positioning section positions and stops the workpiece.

[0016] Furthermore, the automatic plane dimension detection device also includes a display panel and a controller, which are respectively fixed on the workbench. The display panel displays the working condition of the automatic plane dimension detection device. The controller controls the feeding robot, the first detection mechanism, the transfer robot, the second detection mechanism, the flipping robot, and the material returning robot to work. The controller has a switch button, which controls the automatic plane dimension detection device to be turned on or off by operating the switch button.

[0017] The beneficial effects of the automatic plane size detection device of the utility model include high automation degree, improved production efficiency and safety, and reduced production cost and product defect rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of a device for automatically detecting plane dimensions of the utility model.

[0019] Figure 2 It is a partial top view of a device for automatically detecting plane dimensions according to the utility model.

[0020] Figure 3 for Figure 2 The enlarged top view of point A in the automatic plane dimension detection device shown.

[0021] Figure 4 for Figure 2 A top view of the transfer robot of the automatic plane size detection device is shown.

[0022] Figure 5 for Figure 2 A three-dimensional view of the connecting plate of the transfer robot shown.

[0023] Figure 6 for Figure 2 A top view of the feed positioning mechanism of the automatic plane dimension detection device is shown.

[0024] Figure 7 It is a partial stereoscopic diagram of a device for automatically detecting plane dimensions according to the utility model.

[0025] Figure 8 for Figure 7 The enlarged stereoscopic image of point B in the automatic plane size detection device shown.

[0026] Fig. 9 It is a partial rear view of a device for automatically detecting plane dimensions according to the utility model.

[0027] Fig.10 for Fig. 9 The enlarged rear view of point C in the automatic plane size detection device shown. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] The terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", etc. in the specification and claims of the utility model indicate directions or position relationships based on the directions or position relationships shown in the drawings, and are only for the clarity of expressing the technical solutions and the convenience of description, and therefore cannot be understood as limitations on the present application.

[0030] See also Figure 1 , Figure 2 , Figure 4 and Fig. 9 , an automatic plane size detection device, arranged on one side of an assembly line 2 carrying a workpiece 1, comprises a workbench 100 and a feeding manipulator 10, a first positioning seat 20, a first detection mechanism 30, a flipping manipulator 40, a second detection mechanism 50, a second positioning seat 60, and a material return manipulator 70, which are sequentially fixed on the workbench 100 along the flow direction of the assembly line 2, wherein the first detection mechanism 30 comprises a first image sensor 31, and the second detection mechanism 50 comprises a second image sensor 51, wherein the first image sensor 31 and the second image sensor 51 respectively detect the sizes of different planes of the workpiece 1 The automatic plane size detection device also includes a transfer robot 80, which is arranged on the workbench 100. The transfer robot 80 is used to transfer the workpiece 1 on the first positioning seat 20, the first detection mechanism 30, the flip robot 40, and the second detection mechanism 50. The transfer robot 80 includes a first electric guide rail 81 and a pair of first clamping arms 85, a pair of second clamping arms 86, a pair of third clamping arms 87, and a pair of fourth clamping arms 88 movably arranged on the first electric guide rail 81. The first electric guide rail 81 extends in a direction parallel to the flow direction of the assembly line 2;

[0031] During operation, the feeding robot 10 grabs the workpiece 1 of the assembly line 2 and moves and places it on the first positioning seat 20. The first positioning seat 20 positions the workpiece 1 so that the first plane of the workpiece 1 faces upward. The transfer robot 80 clamps the workpiece 1 on the first positioning seat 20 through a pair of first clamping arms 85 and moves and places it on the first detection mechanism 30. The first image sensor 31 recognizes and detects the size of the first plane. The transfer robot 80 clamps the workpiece 1 on the first detection mechanism 30 through a pair of second clamping arms 86 and moves and places it on the flipping mechanism. Hand 40, the flipping robot 40 flips the workpiece 1 and turns the second plane of the workpiece 1 upwards, the transfer robot 80 clamps the workpiece 1 on the flipping robot 40 through a pair of third clamping arms 87 and moves it to the second detection mechanism 50, the second image sensor 51 recognizes and detects the size of the second plane, the transfer robot 80 clamps the workpiece 1 on the second detection mechanism 50 through a pair of fourth clamping arms 88 and moves it to the second positioning seat 60, and the return robot 70 returns the workpiece 1 on the second positioning seat 60 to the assembly line 2.

[0032] From the above, the automatic plane dimension detection device proposed in the utility model realizes automatic loading and unloading of the workpiece 1 and automatic detection of dimensions of different planes of the workpiece 1 through the cooperation of the feeding robot 10, the first positioning seat 20, the transfer robot 80, the first detection mechanism 30, the flipping robot 40, the second detection mechanism 50, the second positioning seat 60, and the material return robot 70, thereby replacing manual loading and unloading and manual detection. The automatic plane dimension detection device has a high degree of automation, improves production efficiency and safety, and reduces production costs and product defective rates.

[0033] See also Figure 2 , Figure 4 and Figure 5 The transfer robot 80 also includes a connecting plate 83, a first guide block 82 and four first cylinders 84. The first guide block 82 is movably set on the first electric guide rail 81, and the connecting plate 83 is installed on the first guide block 82. The connecting plate 83 is movably set on the first electric guide rail 81 through the first guide block 82. When working, the connecting plate 83 slides on the first electric guide rail 81.

[0034] More specifically, the connecting plate 83 is provided with four protruding parts 831 at equal intervals at one end close to the flipping manipulator 40, one of the first cylinders 84 is fixed on one of the protruding parts 831, each of the first cylinders 84 has a first movable end, and a pair of the first clamping arms 85, a pair of the second clamping arms 86, a pair of the third clamping arms 87, and a pair of the fourth clamping arms 88 are respectively movably connected to the four first movable ends. The spacing between the symmetry axis of the pair of the first clamping arms 85 and the symmetry axis of the pair of the second clamping arms 86, the spacing between the symmetry axis of the pair of the second clamping arms 86 and the symmetry axis of the pair of the third clamping arms 87, and the spacing between the symmetry axis of the pair of the third clamping arms 87 and the symmetry axis of the pair of the fourth clamping arms 88 are all kept equal.

[0035] When working, the first electric guide rail 81 drives the connecting plate 83 to move along the first electric guide rail 81, and a pair of the first clamping arms 85, a pair of the second clamping arms 86, a pair of the third clamping arms 87, and a pair of the fourth clamping arms 88 simultaneously follow the connecting plate 83 to move. When the pair of the first clamping arms 85, a pair of the second clamping arms 86, a pair of the third clamping arms 87, and a pair of the fourth clamping arms 88 are respectively moved to the first positioning seat 20, the first detection mechanism 30, the flip manipulator 40, and the second detection mechanism 50, the first electric guide rail 81 stops working, and the four first cylinders 84 work simultaneously to drive the pair of the first clamping arms 85, the pair of the second clamping arms 86, the pair of the third clamping arms 87. A pair of the fourth clamping arms 88 are tightened to clamp the workpiece 1; the first electric guide rail 81 continues to work to drive the connecting plate 83 to move. When a pair of the first clamping arms 85, a pair of the second clamping arms 86, a pair of the third clamping arms 87, and a pair of the fourth clamping arms 88 respectively drive the workpiece 1 to move to the first detection mechanism 30, the flip robot 40, the second detection mechanism 50, and the second positioning seat 60, the first electric guide rail 81 stops working, and the four first cylinders 84 stop working at the same time, respectively causing a pair of the first clamping arms 85, a pair of the second clamping arms 86, a pair of the third clamping arms 87, and a pair of the fourth clamping arms 88 to release the workpiece 1, thereby completing the transfer of the workpiece 1.

[0036] See also Figure 2 and Figure 3The flip robot 40 includes a second cylinder 41 with a rotating end, a third cylinder 42 installed on the rotating end and a pair of fifth clamping arms 43, the third cylinder 42 has a second movable end, and the pair of fifth clamping arms 43 are movably connected to the second movable end; when working, the third cylinder 42 rotates following the rotating end of the second cylinder 41, and the pair of fifth clamping arms 43 follows the movement of the third cylinder 42, and the rotation angle of the rotating end of the second cylinder 41 is 180° each time.

[0037] When the transfer robot 80 transfers the workpiece 1 to the flipping robot 40, the third cylinder 42 works to drive a pair of the fifth clamping arms 43 to clamp the workpiece 1, thereby clamping the workpiece 1; the second cylinder 41 works to drive the workpiece 1 to rotate 180°, thereby completing the flipping of the workpiece 1.

[0038] See also Fig. 9 The first detection mechanism 30 also includes a first base 32 and a first fixing frame 33, the first base 32 and the first fixing frame 33 are respectively fixed on the workbench 100, and the first image sensor 31 is installed on the first fixing frame 33 and is located above the first base 32; the second detection mechanism 50 also includes a second base 52 and a second fixing frame 53, the second base 52 and the second fixing frame 53 are respectively fixed on the workbench 100, and the second image sensor 51 is installed on the second fixing frame 53 and is located above the second base 52.

[0039] During operation, the first image sensor 31 identifies and detects the size of the first plane of the workpiece 1 , and the second image sensor 51 identifies and detects the size of the second plane of the workpiece 1 .

[0040] See also Figure 2 The upper surface of the first positioning seat 20 is provided with a first positioning groove corresponding to the workpiece 1, and the upper surface of the second positioning seat 60 is provided with a second positioning groove corresponding to the workpiece 1. The first positioning groove positions the workpiece 1, thereby ensuring that the transfer robot 80 in the subsequent steps can accurately grasp and transfer the workpiece 1 to achieve automatic transfer; the second positioning groove positions the workpiece 1, thereby ensuring that the material return robot 70 can accurately grasp the workpiece 1 to achieve automatic unloading.

[0041] See also Figure 2 , Fig. 9 and Fig.10The feeding robot 10 includes a first bracket 12, a second electric guide rail 11, a first clamping part 13 and a first sensor. The first bracket 12 is fixed on the workbench 100, the second electric guide rail 11 is fixed on the first bracket 12, the second electric guide rail 11 extends horizontally along a flow direction perpendicular to the assembly line 2 and its end is located above the assembly line 2, the first sensor is installed on one end of the second electric guide rail 11 close to the assembly line 2, the first clamping part 13 is movably arranged on the second electric guide rail 11, and the first clamping part 13 grabs the workpiece 1.

[0042] More specifically, the first clamping part 13 includes a fourth cylinder 132 having a third movable end, a fifth cylinder 133 having a fourth movable end, a pair of sixth clamping arms 134 and a second guide block 131, the second guide block 131 is movably set on the second electric guide rail 11, the fourth cylinder 132 is installed on the second guide block 131, and the fourth cylinder 132 is movably set on the second electric guide rail 11; the fifth cylinder 133 is connected to the third movable end of the fourth cylinder 132, and a pair of sixth clamping arms 134 are movably connected to the fourth movable end of the fifth cylinder 133.

[0043] During operation, when the first sensor senses that the workpiece 1 on the assembly line 2 is located directly below the first sensor, the second electric guide rail 11 drives the fourth cylinder 132 to move to the end of the second electric guide rail 11 close to the assembly line 2, and the fourth cylinder 132 drives the fifth cylinder 133 to move downward. When a pair of the sixth clamping arms 134 approach the two sides of the workpiece 1 of the assembly line 2 downward, the fifth cylinder 133 drives the pair of the sixth clamping arms 134 to clamp the workpiece 1, thereby clamping the workpiece 1; then the second electric guide rail 11 drives the fourth cylinder 132 to move to directly above the first positioning seat 20, and the fifth cylinder 133 stops working to cause the pair of the sixth clamping arms 134 to release the workpiece 1, and the workpiece 1 is placed in the first positioning groove of the first positioning seat 20, thereby realizing automatic loading of the workpiece 1.

[0044] See also Figure 2 , Figure 7 and Figure 8The material return robot 70 includes a second bracket 71, a third electric guide rail 72, a second clamping part 73 and a second sensor. The second bracket 71 is fixed on the workbench 100, and the third electric guide rail 72 is fixed on the second bracket 71. The third electric guide rail 72 extends horizontally along a flow direction perpendicular to the assembly line 2 and its end is located above the assembly line 2. The second sensor is installed on the end of the third electric guide rail 72 away from the assembly line 2. The second clamping part 73 is movably arranged on the third electric guide rail 72. The second clamping part 73 grabs the workpiece 1.

[0045] More specifically, the second clamping part 73 includes a sixth cylinder 732 with a fifth movable end, a seventh cylinder 733 with a sixth movable end, a pair of seventh clamping arms 734 and a third guide block 731, the third guide block 731 is movably set on the third electric guide rail 72, the sixth cylinder 732 is installed on the third guide block 731, and the sixth cylinder 732 is movably set on the third electric guide rail 72; the seventh cylinder 733 is connected to the fifth movable end of the sixth cylinder 732, and a pair of seventh clamping arms 734 are movably connected to the sixth movable end of the seventh cylinder 733.

[0046] During operation, when the second sensor senses that the workpiece 1 is placed on the second positioning seat 60, the third electric guide rail 72 drives the sixth cylinder 732 to move to the end of the third electric guide rail 72 away from the assembly line 2, and the sixth cylinder 732 drives the seventh cylinder 733 to move downward. When a pair of the seventh clamping arms 734 approach the two sides of the workpiece 1 on the second positioning seat 60 downward, the seventh cylinder 733 drives the pair of the seventh clamping arms 734 to clamp the workpiece 1, thereby clamping the workpiece 1; then the third electric guide rail 72 drives the sixth cylinder 732 to move to the top of the assembly line 2, and the seventh cylinder 733 stops working to make the pair of the seventh clamping arms 734 release the workpiece 1, and the workpiece 1 is placed on the assembly line 2, thereby realizing automatic unloading of the workpiece 1.

[0047] See also Figure 2 and Figure 6 The automatic plane dimension detection device also includes a feed positioning mechanism 90, which is installed on the workbench 100 and is located above the assembly line 2. The feed positioning mechanism 90 includes a fixed column 91 and a pair of positioning arms 92. The fixed column 91 is fixed on the workbench 100 and protrudes toward the assembly line 2. The pair of positioning arms 92 is installed on the fixed column 91 and is close to the upper surface of the assembly line 2.

[0048] A pair of positioning arms 92 enclose a feed channel 93 , and the feed channel 93 has a guide section 931 and a positioning section 932 . The guide section 931 of the feed channel 93 gradually converges along the flow direction of the assembly line 2 , and the positioning section 932 positions and stops the workpiece 1 .

[0049] See also Figure 1 and Figure 2 The workbench 100 includes a shell 101, and the automatic plane size detection device also includes a display panel 200 and a controller 300. The display panel 200 and the controller 300 are respectively fixed on the shell 101 of the workbench 100. The display panel 200 displays the working condition of the automatic plane size detection device. The controller 300 controls the feeding robot 10, the first detection mechanism 30, the transfer robot 80, the second detection mechanism 50, the flipping robot 40, and the material return robot 70 to work. The controller 300 has a switch button 301, and the automatic plane size detection device is turned on or off by operating the switch button 301.

[0050] The beneficial effects of the automatic plane size detection device of the utility model include high automation degree, improved production efficiency and safety, and reduced production cost and product defect rate.

[0051] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An automatic plane dimension detection device, arranged on one side of a production line carrying workpieces, characterized in that: It includes a workbench and a feeding robot, a first positioning seat, a first detection mechanism, a flipping robot, a second detection mechanism, a second positioning seat, and a material returning robot fixed on the workbench in sequence along the flow direction of the assembly line, the first detection mechanism includes a first image sensor, the second detection mechanism includes a second image sensor, the first image sensor and the second image sensor respectively detect the sizes of different planes of the workpiece, the automatic plane size detection device also includes a transfer robot, the transfer robot is arranged on the workbench, the transfer robot is used to transfer the workpiece on the first positioning seat, the first detection mechanism, the flipping robot, and the second detection mechanism, the transfer robot includes a first electric guide rail and a pair of first clamping arms, a pair of second clamping arms, a pair of third clamping arms and a pair of fourth clamping arms movably arranged on the first electric guide rail, the first electric guide rail extends in a direction parallel to the flow direction of the assembly line.

2. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The distance between the symmetry axis of the pair of first clamp arms and the symmetry axis of the pair of second clamp arms, the distance between the symmetry axis of the pair of second clamp arms and the symmetry axis of the pair of third clamp arms, and the distance between the symmetry axis of the pair of third clamp arms and the symmetry axis of the pair of fourth clamp arms are all kept equal.

3. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The transfer robot also includes a connecting plate and four first cylinders. The connecting plate is movably arranged on the first electric guide rail. During operation, the connecting plate slides on the first electric guide rail. The four first cylinders are fixed on one end of the connecting plate close to the flipping robot. Each of the first cylinders has a first movable end. A pair of the first clamping arms, a pair of the second clamping arms, a pair of the third clamping arms, and a pair of the fourth clamping arms are respectively movably connected to the four first movable ends.

4. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The flipping robot includes a second cylinder with a rotating end, a third cylinder installed on the rotating end and a pair of fifth clamping arms, the third cylinder has a second movable end, and the pair of fifth clamping arms are movably connected to the second movable end; when working, the third cylinder rotates following the rotating end of the second cylinder, and the pair of fifth clamping arms follows the movement of the third cylinder, and the rotation angle of the rotating end of the second cylinder is 180° each time.

5. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The first detection mechanism also includes a first base and a first fixing frame, the first base and the first fixing frame are respectively fixed on the workbench, and the first image sensor is installed on the first fixing frame and is located above the first base; the second detection mechanism also includes a second base and a second fixing frame, the second base and the second fixing frame are respectively fixed on the workbench, and the second image sensor is installed on the second fixing frame and is located above the second base.

6. The device for automatically detecting plane dimensions according to claim 1, characterized in that: A first positioning groove is formed on the upper surface of the first positioning seat corresponding to the workpiece, and a second positioning groove is formed on the upper surface of the second positioning seat corresponding to the workpiece.

7. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The feeding robot includes a second electric guide rail, a first clamping part and a first sensor. The second electric guide rail extends horizontally along a flow direction perpendicular to the assembly line and its end is located above the assembly line. The first sensor is installed on one end of the second electric guide rail close to the assembly line. The first clamping part is movably arranged on the second electric guide rail.

8. The device for automatically detecting plane dimensions as claimed in claim 1, characterized in that: The material return robot includes a third electric guide rail, a second clamping part and a second sensor. The third electric guide rail extends horizontally along a flow direction perpendicular to the assembly line and its end is located above the assembly line. The second sensor is installed on one end of the third electric guide rail away from the assembly line. The second clamping part is movably arranged on the third electric guide rail.

9. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The automatic plane dimension detection device also includes a feed positioning mechanism, which is installed on the workbench and located above the assembly line. The feed positioning mechanism includes a pair of positioning arms, and the pair of positioning arms form a feed channel. The feed channel has a guide section and a positioning section. The guide section of the feed channel gradually converges along the flow direction of the assembly line, and the positioning section positions and stops the workpiece.

10. The device for automatically detecting plane dimensions according to claim 1, characterized in that: The automatic plane size detection device also includes a display panel and a controller, and the display panel and the controller are respectively fixed on the workbench. The display panel displays the working condition of the automatic plane size detection device, and the controller controls the feeding robot, the first detection mechanism, the transfer robot, the second detection mechanism, the flipping robot, and the material return robot to work. The controller has a switch button, and the automatic plane size detection device is controlled to be turned on or off by operating the switch button.

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