Mobile phone shell detection device

Abstract

The invention discloses a mobile phone shell detection device, which relates to the field of mobile phone shell detection, and comprises a clamping mechanism for fixing a mobile phone shell, a visual detection device arranged above the clamping mechanism, and a jacking piece arranged below the clamping mechanism, the jacking piece can move in the length direction or the width direction of the mobile phone shell within a first distance range, the jacking piece extrudes the mobile phone shell to enable the extruded portion of the mobile phone shell to arch upwards when moving into a second distance range, the second distance range is within the first distance range, and the driving mechanism is used for driving the jacking piece to move. When the jacking piece moves to the stroke tail end of the first distance range, the jacking piece is far away from the surface of the mobile phone shell and has a gap; according to the mobile phone shell detection device, through the cooperation of the visual detection device and the jacking piece, the mobile phone shell is arched in a detection area under the movement and extrusion of the jacking piece, so that the visibility of surface defects is enhanced, and the detection precision is further improved.

Description

Technical Field

[0001] The invention relates to a mobile phone shell detection technology, and in particular to a mobile phone shell detection device. Background Art

[0002] In the production process of mobile phone shells, the inspection process is an important link to ensure product quality. The current common inspection method is to place the mobile phone shell in a horizontal position, and use automated equipment or manual inspectors to check the shell surface one by one to identify whether there are flaws, defects or stains. Some cracks, tiny defects or surface cracks are difficult to be detected in time due to the close contact or compression state of the shell in its natural state. These defects may increase the difficulty of inspection and lead to the risk of missed inspections due to the shell maintaining a smaller size when it is not deformed. Summary of the invention

[0003] The purpose of the present invention is to provide a mobile phone shell detection device to solve the above-mentioned deficiencies in the prior art.

[0004] In order to achieve the above object, the present invention provides the following technical solution: a mobile phone shell detection device, comprising a clamping mechanism for fixing the mobile phone shell and a visual detection device arranged above the clamping mechanism, and further comprising:

[0005] A supporting member is arranged below the clamping mechanism, and the supporting member can move within a first distance range along the length direction or the width direction of the mobile phone housing, and when the supporting member moves to a second distance range, it presses the mobile phone housing so that the pressed part is arched upward, and the second distance range is within the first distance range;

[0006] The driving mechanism is used to drive the top support member to move, and when the top support member moves to the end of the stroke of the first distance range, the top support member is away from the surface of the mobile phone shell and has a gap.

[0007] Furthermore, the gap is greater than the thickness of the mobile phone housing.

[0008] Furthermore, the driving mechanism includes a first track arranged along the length direction or width direction of the mobile phone housing, a first slide is slidably connected to the first track, a guide rod is slidably connected to the first slide in a vertical direction, the top of the guide rod is fixedly connected to the mounting seat, the mounting seat is connected to the top support member, and the driving mechanism also includes a guide slide A, which is arranged on one side of the mounting seat, a first guide column is fixedly installed on one side of the mounting seat, and the first guide column can slide along the A guide slide.

[0009] Furthermore, the clamping mechanism is connected to a flipping mechanism, which is used to drive the clamping mechanism to rotate 180°.

[0010] Furthermore, it also includes a lifting mechanism, which is used to move the driving mechanism so that the supporting member is located outside the range swept when the frame rotates.

[0011] Furthermore, the driving mechanism also includes a B guide slide and a switching mechanism. The B guide slide is arranged on the side of the mounting seat away from the A guide slide. The side of the mounting seat close to the B guide slide is connected to a second guide column, and the second guide column can slide along the B guide slide.

[0012] Furthermore, the switching mechanism is used to synchronously move the first guide post and the second guide post, so that when the first guide post moves into the A guide slide, the second guide post disengages from the B guide slide, or when the first guide post disengages from the A guide slide, the second guide post moves into the B guide slide.

[0013] Furthermore, the switching mechanism includes wedge-shaped push blocks arranged at the ends of guide slide A and guide slide B, and the two wedge-shaped push blocks are respectively used to push the first guide column and the second guide column to move. An active cavity is opened through one side of the mounting seat, and a sliding column is slidably connected in the active cavity. The two ends of the sliding column are respectively connected to the first guide column and the second guide column.

[0014] Furthermore, the switching mechanism also includes a limit member, which includes a cylindrical groove opened on one side of the mounting seat, the axis of the cylindrical groove is perpendicular to the length direction of the active cavity, a pin body is slidably installed in the cylindrical groove, a spring is installed on the side of the pin body away from the active cavity, and two pin grooves matching the pin body are opened on the sliding column. When the first guide column and the second guide column are switched, the pin body is located on one of the pin grooves.

[0015] A mobile phone shell detection method is applicable to the mobile phone shell detection device as described above, and specifically comprises the following steps:

[0016] S1. First, place the mobile phone housing to be tested in a clamping mechanism for fixing;

[0017] S2, the driving mechanism drives the top support member to move so that the squeezed part of the mobile phone housing arches upward, and the arched part is inspected by the visual inspection device to obtain inspection data information;

[0018] S3, the supporting member moves to outside the range swept by the frame when it rotates, and then the flip mechanism drives the clamping device to rotate 180° before the supporting member returns;

[0019] S4, the driving mechanism drives the top support member to move to detect the other side of the mobile phone housing;

[0020] S5. The clamping mechanism releases the clamping of the mobile phone shell and replaces the mobile phone shell to be tested with a new one for testing.

[0021] Compared with the prior art, the mobile phone shell detection device provided by the present invention has the following beneficial effects:

[0022] The mobile phone shell detection device, through the cooperation of the visual detection device and the top support member, causes the mobile phone shell to arch in the detection area under the movement and extrusion of the top support member, thereby enhancing the visibility of surface defects and further improving the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1 A schematic diagram of the partial structure of a mobile phone casing detection device provided by an embodiment of the present invention;

[0025] Figure 2 The embodiment of the present invention provides Figure 1 A schematic diagram of a partial longitudinal section of the clamping mechanism, the flipping mechanism and the driving mechanism;

[0026] Figure 3 A schematic diagram of the structure of a supporting member and a driving mechanism provided in an embodiment of the present invention;

[0027] Figure 4 The embodiment of the present invention provides Figure 3 Schematic diagram of the local longitudinal section state;

[0028] Figure 5 The embodiment of the present invention provides Figure 4 The enlarged view of point A in the middle;

[0029] Figure 6 A schematic diagram of the wedge-shaped push block structure provided by an embodiment of the present invention;

[0030] Figure 7 A schematic diagram of the structure of the guide slideway A and the guide slideway B provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure when a material transfer mechanism is provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Workbench; 2. Clamping mechanism; 3. Top support; 4. Driving mechanism; 41. First slide; 42. Base; 43. Guide rod; 44. Mounting seat; 45. Guide slideway A; 451. First slideway a; 452. Second slideway a; 46. First guide column; 47. Guide slideway B; 471. First slideway b; 472. Second slideway b; 48. Second guide column; 49. Switching mechanism; 491. Wedge-shaped push block; 492. Sliding column; 493. Cylindrical groove; 494. Pin body; 495. Spring; 496. Pin groove; 5. Flipping mechanism; 51. Frame; 6. Lifting mechanism; 61. Push rod; 62. Guide rod; 7. Material moving mechanism; 8. Conveying mechanism; 81. Conveying cabin; 100. Mobile phone housing. DETAILED DESCRIPTION

[0034] The current detection methods mainly rely on visual inspection of the appearance or static image processing technology. These methods cannot effectively capture the defect manifestation when the shell shape changes, and lack a detection mode for dynamic deformation, resulting in some cracks or defects not being detected in their most easily visible state. When the shape change (such as arching and bending) of the mobile phone shell after being stressed is related to the appearance of defects (such as cracks), when there are no cracks, the shell has a certain ductility, so that the defects will not appear, making the defects easy to identify. This change is a dynamic process, that is, based on visual inspection, the defective parts that may have been hidden are exposed, achieving the effect of "defect magnification", and then facilitating the capture of defects and obtaining reliable detection results. In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail in conjunction with the accompanying drawings below:

[0035] For examples, see Figure 1 - Figure 8 A mobile phone housing 100 detection device includes a clamping mechanism 2 for fixing the mobile phone housing 100 and a visual detection device (not shown) arranged above the clamping mechanism 2, and also includes:

[0036] A supporting member 3 is arranged below the clamping mechanism 2, and the supporting member 3 can move within a first distance range along the length direction or the width direction of the mobile phone housing 100, and when the supporting member 3 moves to a second distance range, it squeezes the mobile phone housing 100 so that the squeezed portion thereof arches upward, and the second distance range is within the first distance range;

[0037] The driving mechanism 4 is used for driving the supporting member 3 to move, and when the supporting member 3 moves to the end of the travel of the first distance range, the supporting member 3 is away from the surface of the mobile phone housing 100 and has a gap.

[0038] By setting the clamping mechanism 2 to fix the mobile phone housing 100, the mobile phone housing 100 will not be displaced or deformed during the detection process, thereby ensuring the stability and accuracy of the detection;

[0039] The cooperation between the visual inspection device and the top support member 3, as well as the squeezing action of the top support member 3, causes the shell to bulge in the area to be determined, thereby enhancing the visibility of surface defects (such as cracks, depressions or unevenness, etc.) and further improving the inspection accuracy.

[0040] In one embodiment of the present invention, Figure 3 As shown, the supporting member 3 is cylindrical and is rotatably mounted on a mounting seat 44 .

[0041] In one embodiment of the present invention, the top support member 3 is away from the surface of the mobile phone casing 100 and has a gap that is greater than the thickness of the mobile phone casing 100. For the case where the top support member 3 moves along the length direction of the mobile phone casing 100, since the first distance range has a sufficient distance setting, the gap may not be greater than the thickness of the mobile phone casing 100. For the case where the top support member 3 moves along the width direction of the mobile phone casing 100, since the first distance range is limited by the width direction of the mobile phone casing, when the top support member 3 moves to the edge of the mobile phone casing 100, in order not to be hindered by the edge part of the shell, moving to a gap greater than the thickness of the mobile phone casing 100 can ensure that the top support member 3 does not collide or rub against the edge of the mobile phone casing 100 in the width direction under the condition of the required second distance range.

[0042] In one embodiment of the present invention, a specific example of a driving mechanism 4 is provided (not shown in the figure), which includes a longitudinal moving member for driving the top support member 3 to move in the vertical direction and a transverse moving member for driving the top support member 3 to move in the horizontal direction. Specifically, the longitudinal moving member includes a longitudinal track arranged in the vertical direction and a longitudinal slide sliding on the longitudinal track. The top of the longitudinal slide is connected to the top support member 3, and the bottom of the longitudinal slide is connected to a linear driving member for driving it to move on the longitudinal track. The linear driving member is a cylinder or a hydraulic cylinder.

[0043] The transverse moving member includes a transverse track arranged in the horizontal direction along the length direction or the width direction of the mobile phone housing 100, a transverse slide is slidably connected to the transverse track, the longitudinal moving member is mounted on the transverse slide, one side of the transverse slide is connected to another linear driving member for driving it to move along the transverse track, the linear driving member is a cylinder or a hydraulic cylinder, and it should be noted that the moving stroke of the transverse slide corresponds to the first distance range;

[0044] The top support member 3 is moved by the longitudinal moving member to be squeezed or detached from the surface of the mobile phone shell 100, and the top support member 3 is moved by the transverse moving member to be moved within the first distance range. When moving, the top support member 3 causes the squeezed part of the mobile phone shell 100 to arch upward, and the arched part is detected by the visual detection device to obtain image information of the mobile phone shell 100, thereby performing corresponding detection on the mobile phone shell 100.

[0045] In one embodiment of the present invention, the visual detection device includes but is not limited to a CCD imaging detection device.

[0046] In one embodiment of the present invention, another specific example of the driving mechanism 4 is provided, such as Figure 7 As shown, it includes a first track arranged along the length direction or the width direction of the mobile phone housing 100, a first slide 41 is slidably connected to the first track, the first slide 41 is connected to a first driving member for driving it to move along the first track, a guide rod 43 is slidably connected to the first slide 41 along the vertical direction, the top of the guide rod 43 is fixedly connected to a mounting seat 44, the mounting seat 44 is connected to the top support member 3, the driving mechanism 4 also includes an A guide slide 45, which is arranged on one side of the mounting seat 44, and the A guide slide 45 is composed of two symmetrical first slides a451 and a second slide a452 located in the middle, the second slide a452 is located within the second distance range, and the height of the second slide a452 is greater than the height of the first slide a451, and a first guide column 46 is connected to one side of the mounting seat 44, and the first guide column 46 can slide along the A guide slide 45;

[0047] When the guide post moves on the first slideway a451, the supporting member 3 moves away from the surface of the mobile phone housing 100. When the guide post moves on the second slideway b472, the supporting member 3 presses the mobile phone housing 100.

[0048] It should be noted that two guide rods 43 are provided to ensure the stability of the mounting seat 44 and the top support member 3 when they move in the vertical direction;

[0049] In one embodiment of the present invention, the first driving member is a pneumatic cylinder or a hydraulic cylinder or an electric telescopic rod, the piston rod of the pneumatic cylinder or the piston rod of the hydraulic cylinder or the telescopic rod of the electric telescopic rod is connected to the first slide 41, and the cylinder body of the pneumatic cylinder or the cylinder body of the hydraulic cylinder or the cylinder body of the electric telescopic rod is installed on one side of the first track.

[0050] In one embodiment of the present invention, Figure 3 As shown, the first driving member includes a screw, which is threadedly mounted on the first slide 41. There are two first tracks, which are arranged on the base 42. The screw is rotatably connected to the base 42, and one end of the screw is connected to an electric motor, a pneumatic motor or a hydraulic motor (not shown in the figure) that drives it to rotate.

[0051] In one embodiment of the present invention, the clamping mechanism 2 is connected to the flipping mechanism 5, which is used to drive the clamping mechanism 2 to rotate 180°. The flipping mechanism 5 includes a frame 51, and the clamping mechanism 2 is installed on the frame 51. The two ends of the frame 51 are fixedly connected with symmetrically distributed rotating shafts. The rotating shafts are installed above the workbench 1 through a bracket rotatably connected to them, and one of the rotating shafts is connected to an electric motor, a pneumatic motor or a hydraulic motor for driving its rotation.

[0052] In one embodiment of the present invention, the clamping mechanism 2 includes two clamps and a cylinder or a hydraulic cylinder or an electric telescopic rod for driving the two clamps to move closer and further away from each other. The two clamps slide along the inner wall of the frame 51. When the two clamps are close to each other, they clamp the side edges of the mobile phone housing 100 in the length direction or width direction. This is a prior art and will not be described in detail here.

[0053] In one embodiment of the present invention, the workbench 1 is equipped with a lifting mechanism 6, which is connected to the driving mechanism 4, and the lifting mechanism 6 is used to move the driving mechanism 4 so that the top support member 3 is located outside the range swept by the frame 51 when it rotates;

[0054] In one embodiment of the present invention, the lifting mechanism 6 is a general linear drive member;

[0055] In one embodiment of the present invention, Figure 2 As shown, the lifting mechanism 6 includes a push rod 61 and a guide rod 62 for constraining the driving mechanism 4 to move in the vertical direction. One end of the push rod 61 is rotatably connected to the base 42 of the driving mechanism 4, and the other end is rotatably connected to a linear driving member. The linear driving member is installed on the workbench 1 in the horizontal direction, and moves one end of the push rod 61 so that the other end pushes the driving mechanism 4 to move upward.

[0056] After the inspection of one side of the mobile phone housing 100 is completed, the lifting mechanism 6 drives the support member 3 to move in the vertical direction and move it outside the range swept by the frame 51 when it rotates, thereby avoiding obstruction of the flip mechanism 5 itself and the clamping mechanism 2 during rotation by the support member 3.

[0057] In one embodiment of the present invention, the driving mechanism 4 also includes a B guide slide 47 and a switching mechanism 49. The B guide slide 47 is arranged on a side of the mounting seat 44 away from the A guide slide 45. The B guide slide 47 is composed of two symmetrical first slides b471 and a second slide b472 located in the middle. The second slide b472 is located within a second distance range, and the height of the second slide b472 is greater than the height of the first slide b471. A second guide column 48 is connected to a side of the mounting seat 44 close to the B guide slide 47. The second guide column 48 can slide along the B guide slide 47. The height of the first slide b471 is lower than the height of the first slide a451 and has a height difference. The switching mechanism 49 is used to synchronously move the first guide column 46 and the second guide column 48, so that when the first guide column 46 moves into the A guide slide 45, the second guide column 48 disengages from the B guide slide 47, or when the first guide column 46 disengages from the A guide slide 45, the second guide column 48 moves into the B guide slide 47.

[0058] It should be noted that the A guide slide 45 and the B guide slide 47 have a height difference in the second distance range, that is, the height of the first slide b471 is lower than the height of the first slide a451 (eg Figure 7 ), the reason is that since the mobile phone shell 100 has an edge structure, after it is turned 180 degrees under the cooperation of the clamping mechanism 2 and the turning mechanism 5, the shell layers to be tested will be at different heights, and this is because the rotation axis of the clamping mechanism 2 is located in the center when it rotates, so only by setting the A guide slide 45, it is impossible to meet the double-sided test of the mobile phone shell, so the B guide slide 47 is set and the switching mechanism 49 is set. When the top support member 3 moves back and forth along the first distance range, the mounting seat 44 is switched once to cooperate with the A guide slide 45 and the B guide slide 47 respectively, thereby completing the double-sided detection of the mobile phone shell 100;

[0059] It should be understood that when the switching mechanism 49 is switched, the first guide post 46 and the second guide post 48 are respectively at the same height position of the A guide slide 45 and the B guide slide 47, that is, the switching mechanism 49 works when it is within the first distance range and outside the second distance range. Figure 3-7 As shown, when the switching mechanism 49 is switched, the first guide column 46 and the second guide column 48 are located on one side of the first slideway a451 or the second slideway a452.

[0060] In one embodiment of the present invention, the switching mechanism 49 includes a wedge-shaped push block 491 arranged at the ends of the A guide slide 45 and the B guide slide 47. The two wedge-shaped push blocks 491 are respectively used to push the first guide column 46 and the second guide column 48 to move. A movable cavity is opened through one side of the mounting seat 44, and a sliding column 492 is slidably connected in the movable cavity. The two ends of the sliding column 492 are respectively connected to the first guide column 46 and the second guide column 48, so that the first guide column 46 and the second guide column 48 move synchronously. Specifically, when the mounting seat 44 moves, the first guide column 46 on one side is in an extended state and is located in the A guide slide 45. When the first guide column 46 moves to the A guide slide, the first guide column 46 is moved to the A guide slide. When it reaches the end position of the slide 45, the first guide post 46 is pushed by the wedge-shaped push block 491, so that the first guide post 46 moves into the mounting seat 44 and disengages from the A guide slide. At the same time, the second guide post 48 extends from one side of the mounting seat 44 and moves into the B guide slide 47. After the mobile phone housing 100 is flipped over, the mounting seat 44 returns. At this time, the second guide post 48 will slide along the B guide slide 47. When it moves to the end of the B guide slide 47, the second guide post 48 is pushed by another wedge-shaped push block 491, so that the second guide post 48 moves into the mounting seat 44 and disengages from the B guide slide 47, and the first guide post 46 will move into the A guide slide 45.

[0061] In one embodiment of the present invention, the switching mechanism 49 further includes a limiting member, which includes a cylindrical groove 493 provided on one side of the mounting seat 44, the axis of the cylindrical groove 493 being perpendicular to the length direction of the active cavity, a pin body 494 being slidably installed in the cylindrical groove 493, a spring 495 being installed on the side of the pin body 494 away from the active cavity, and two pin grooves 496 cooperating with the pin body 494 being provided on the sliding column 492, when the first guide column 46 and the second guide column 48 are switched, the pin body 494 is located on one of the pin grooves 496, thereby limiting the sliding column 492 to prevent the sliding column 492 from moving;

[0062] In one embodiment of the present invention, the pin body 494 is a sphere. Figure 5 As shown, correspondingly, the pin groove 496 is a ball groove. It should be noted that the depth of the ball groove is less than the radius of the ball, so that the sliding column 492 can push the ball open when moving;

[0063] It should be understood that the pin body 494 can also be a wedge-shaped cylindrical pin with a certain slope, and the pin groove 496 is a groove that matches it. The principle is the same as that of the sphere, and will not be described in detail here.

[0064] In one embodiment of the present invention, a method for detecting a mobile phone housing 100 is provided, which specifically comprises the following steps:

[0065] S1, firstly, place the mobile phone housing 100 to be tested in the clamping mechanism 2 for fixing;

[0066] S2, the driving mechanism 4 drives the supporting member 3 to move so that the squeezed part of the mobile phone housing 100 arches upward, and the arched part is inspected by the visual inspection device to obtain inspection data information;

[0067] S3, the supporting member 3 moves to outside the range swept by the frame 51 when it rotates, and then the flip mechanism 5 drives the clamping device to rotate 180° before the supporting member 3 returns;

[0068] S4, the driving mechanism 4 drives the supporting member 3 to move to detect the other side of the mobile phone housing 100;

[0069] S5. The clamping mechanism 2 releases the clamping of the mobile phone housing 100 and replaces the mobile phone housing 100 to be tested with a new one for testing.

[0070] In one embodiment of the present invention, the mobile phone housing 100 detection device further includes a material moving mechanism 7 for moving the mobile phone housing 100 , and a conveying mechanism 8 for conveying the mobile phone housing 100 .

[0071] In one embodiment of the present invention, the conveying mechanism 8 includes a conveying cabin 81 , on which a plurality of cavities for placing the mobile phone housing 100 are disposed, and the conveying cabin 81 can be moved to one side of the clamping mechanism 2 .

[0072] In one embodiment of the present invention, the material transfer mechanism 7 is a general robot.

[0073] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A mobile phone housing detection device, comprising a clamping mechanism (2) for fixing a mobile phone housing (100) and a visual detection device arranged above the clamping mechanism (2), characterized in that: Also includes: A supporting member (3) is arranged below the clamping mechanism (2), and the supporting member (3) can move within a first distance range along the length direction or the width direction of the mobile phone housing (100). When the supporting member (3) moves to a second distance range, it presses the mobile phone housing (100) so that the pressed portion thereof arches upward, and the second distance range is within the first distance range; The driving mechanism (4) is used for driving the top support member (3) to move, and when the top support member (3) moves to the end of a stroke within a first distance range, the top support member (3) is away from the surface of the mobile phone housing (100) and has a gap.

2. A mobile phone casing detection device according to claim 1, characterized in that: The gap is greater than the thickness of the mobile phone housing (100).

3. A mobile phone casing detection device according to claim 1, characterized in that: The driving mechanism (4) comprises a first track arranged along the length direction or the width direction of the mobile phone housing (100), a first slide (41) being slidably connected to the first track, a guide rod (43) being slidably connected to the first slide (41) along the vertical direction, the top of the guide rod (43) being fixedly connected to a mounting seat (44), the mounting seat (44) being connected to the top support member (3), the driving mechanism (4) further comprises an A guide slideway (45) arranged on one side of the mounting seat (44), a first guide column (46) being fixedly installed on one side of the mounting seat (44), and the first guide column (46) being capable of sliding along the A guide slideway (45).

4. A mobile phone casing detection device according to claim 1, characterized in that: The clamping mechanism (2) is connected to a turning mechanism (5), which is used to drive the clamping mechanism (2) to rotate 180 degrees.

5. A mobile phone casing detection device according to claim 4, characterized in that: It also includes a lifting mechanism (6) which is used to move the driving mechanism (4) so ​​that the supporting member (3) is located outside the range swept by the frame (51) when it rotates.

6. A mobile phone casing detection device according to claim 5, characterized in that: The driving mechanism (4) further comprises a B guide slide (47) and a switching mechanism (49); the B guide slide (47) is arranged on a side of the mounting seat (44) away from the A guide slide (45); a second guide column (48) is connected to a side of the mounting seat (44) close to the B guide slide (47); and the second guide column (48) is capable of sliding along the B guide slide (47).

7. A mobile phone casing detection device according to claim 6, characterized in that: The switching mechanism (49) is used to synchronously move the first guide column (46) and the second guide column (48), so that when the first guide column (46) moves into the A guide slideway (45), the second guide column (48) is separated from the B guide slideway (47), or when the first guide column (46) is separated from the A guide slideway (45), the second guide column (48) is moved into the B guide slideway (47).

8. A mobile phone casing detection device according to claim 7, characterized in that: The switching mechanism (49) includes wedge-shaped push blocks (491) arranged at the ends of the A guide slide (45) and the B guide slide (47), and the two wedge-shaped push blocks (491) are respectively used to push the first guide column (46) and the second guide column (48) to move. A movable cavity is opened through one side of the mounting seat (44), and a sliding column (492) is slidably connected in the movable cavity. The two ends of the sliding column (492) are respectively connected to the first guide column (46) and the second guide column (48).

9. A mobile phone casing detection device according to claim 8, characterized in that: The switching mechanism (49) further includes a limiting member, which includes a cylindrical groove (493) provided on one side of the mounting seat (44), the axis of the cylindrical groove (493) being perpendicular to the length direction of the active cavity, a pin body (494) being slidably installed in the cylindrical groove (493), a spring (495) being installed on the side of the pin body (494) away from the active cavity, two pin grooves (496) cooperating with the pin body (494) being provided on the sliding column (492), and when the first guide column (46) and the second guide column (48) are switched, the pin body (494) is located on one of the pin grooves (496).

10. A method for detecting a mobile phone shell, applicable to the mobile phone shell detection device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1, firstly placing the mobile phone housing (100) to be tested in a clamping mechanism (2) for fixing; S2, the driving mechanism (4) drives the supporting member (3) to move so that the squeezed portion of the mobile phone housing (100) arches upward, and the arched portion is inspected by a visual inspection device to obtain inspection data information; S3, the supporting member (3) moves to a position outside the range swept by the frame (51) when it rotates, and then the flipping mechanism (5) drives the clamping device to rotate 180° before the supporting member (3) returns; S4, the driving mechanism (4) drives the supporting member (3) to move so as to detect the other side of the mobile phone housing (100); S5, the clamping mechanism (2) releases the clamping of the mobile phone housing (100), and replaces the mobile phone housing (100) to be tested with a new one for testing.

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