A worktable for adjusting the angle of a material plate

Abstract

The application provides a material plate angle adjusting workbench, which comprises a storage table, the left and right sides of the lower rear side of the storage table are respectively fixedly connected with multi-section telescopic electric cylinders, the front ends of the output rods of the multi-section telescopic electric cylinders are respectively fixedly connected with rotary stop adjusting assemblies, the inner sides between the rotary stop adjusting assemblies are fixedly connected with automatic rotary material taking assemblies, the setting angle of the automatic rotary material taking assemblies can be directly adjusted through the rotary stop adjusting assemblies, parts can be stored and automatically moved through the automatic rotary material taking assemblies, and the multi-section telescopic electric cylinders are all located on the inner side of the support frame. The mounting box in the application is located on the lower part of the storage table, so that the placement of the material box does not occupy the tabletop space of the storage table, and does not hinder the installation of mechanical equipment, and the operator can conveniently take and hold the parts, the use is more convenient, and the effect that the operator can conveniently take and hold the parts without hindering the installation of mechanical equipment is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of workbench, and particularly relates to a material plate angle adjusting workbench. BACKGROUND

[0002] The material plate angle adjusting workbench is a workbench capable of adjusting the angle and height of a material plate. The material plate can support a material box, thereby avoiding the material box from occupying the limited space of a table top. For example, a material plate angle adjusting workbench disclosed in Patent No. CN216682066U comprises a fixing member, a table top, a storage table and a locking assembly. The fixing member is used to support the table top, the storage table and the locking assembly. The table top is convenient for an operator to perform machining operation thereon. The table top and the fixing member are fixedly connected. The storage table is used to store a material box and is movably connected with the fixing member. The storage table is located above the table top. However, the workbench still has some problems in actual use. For example, although the height and angle of the material plate can be adjusted, if the position of the material plate is adjusted to be low, the installation of a mechanical device will be hindered. If the position of the material plate is adjusted to be high, the operator will not be convenient for observing and taking parts in the material box, and the use is inconvenient. SUMMARY

[0003] In order to solve the above-mentioned technical problems, the present application provides a material plate angle adjusting workbench which can realize the effect that the operator is convenient for taking parts without hindering the installation of a mechanical device, and the use is more convenient.

[0004] The technical scheme is as follows: a material plate angle adjusting workbench comprises a storage table. An L-shaped support is fixedly connected to the upper rear side of the storage table. A lighting lamp is fixedly connected to the lower front side of the horizontal section of the L-shaped support. A support frame is fixedly connected to the lower part of the storage table. A foot cup is fixedly connected to each of the four corner parts of the lower part of the support frame. The characteristic is that a plurality of telescopic electric cylinders are fixedly connected to the left and right sides of the lower rear side of the storage table. The output rods of the telescopic electric cylinders are fixedly connected to the front ends of the rotating and stopping adjusting assemblies. The rotating and stopping adjusting assemblies are fixedly connected to the inner sides of the automatic rotating and taking assemblies. The setting angle of the automatic rotating and taking assemblies can be directly adjusted by the rotating and stopping adjusting assemblies. The automatic rotating and taking assemblies can store and automatically move parts. The telescopic electric cylinders are located on the inner side of the support frame.

[0005] Preferably, the rotating and stopping adjusting assembly comprises a fixed sleeve, a connecting plate is fixedly connected to the upper side of the outer wall of the fixed sleeve, a rotating shaft is rotatably arranged in the fixed sleeve, an arc-shaped through slot is formed in the lower middle side of the inner wall of the fixed sleeve, a threaded rod is arranged in the arc-shaped through slot, the upper end of the threaded rod is fixedly connected to the lower side of the outer wall of the rotating shaft, an annular sliding plate is slidably arranged on the outer wall of the threaded rod, a rubber block is fixedly connected to the upper part of the annular sliding plate, the threaded rod slidably penetrates through the inner wall of the rubber block, an arc-shaped groove is formed in the upper inner wall of the rubber block, the rubber block is abutted against the outer wall of the fixed sleeve through the arc-shaped groove, an annular push plate is slidably arranged on the outer wall of the threaded rod and located below the annular sliding plate, a first circular groove is formed in the lower middle side of the inner wall of the annular sliding plate, a second circular groove is formed in the upper middle side of the inner wall of the annular push plate, a first spring is arranged between the second circular groove and the first circular groove and sleeved on the outer side of the threaded rod, and a hand screw nut is threadedly connected to the outer wall of the threaded rod and abutted against the lower part of the annular push plate.

[0006] Preferably, the automatic rotating and taking component comprises a mounting box, a support bearing is fixedly connected to the inner bottom middle part of the mounting box, a driving motor is fixedly connected to the lower middle right side of the mounting box, the output shaft of the driving motor penetrates through the inner wall of the mounting box and is fixedly connected to a driving gear at the upper end, the driving gear is in meshing transmission connection with the support bearing, the upper part of the support bearing is fixedly connected to an annular material plate, the driving motor can drive the annular material plate to rotate through the driving gear and the support bearing after the driving motor is started, a plurality of material boxes are fixedly connected to the upper part of the annular material plate, used for storing parts, a clamping-preventing hand detection component is fixedly connected to the opening of the lower middle side of the inner wall of the mounting box and located above the material boxes on the front side, a control panel is fixedly connected to the lower middle side of the front part of the mounting box, and a clamping-preventing box cover structure is connected to the upper part of the mounting box.

[0007] Compared with the prior art, the present application has the following advantages:

[0008] 1. In the process of taking and taking parts, the hand of the operator is inserted into and moved out of the material box as one taking action, when the control panel detects that the hand of the operator completes one taking action through the clamping-preventing hand detection component, the control panel automatically controls the driving motor to start, so that the driving motor moves according to the predetermined rotating direction and the number of revolutions, at this time, the driving motor drives the material box to move through the driving gear, the support bearing and the annular material plate, until the next material box moves to the lower side of the clamping-preventing hand detection component, then the operator can take the next part, and the process is repeated, so as to achieve the effect of sequentially taking parts, without the need for the operator to observe and find the parts to be taken.

[0009] 2、The installation box in the application is located at the lower part of the storage table, so that the placement of the material box does not occupy the table top space of the storage table, and does not hinder the installation of the mechanical equipment, and the operator can conveniently take the parts, the use is more convenient, and the effect of conveniently taking the parts by the operator without hindering the installation of the mechanical equipment is realized. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic diagram of the application.

[0011] Figure 2 is a structural schematic diagram of another view of the application.

[0012] Figure 3 is a structural schematic diagram of the rotation and stop adjusting assembly of the application.

[0013] Figure 4 is a partial sectional view schematic diagram of the automatic rotation material taking assembly of the application.

[0014] Figure 5 is a structural schematic diagram of the anti-pinch box cover structure of the application.

[0015] Figure 6 is a partial sectional view structural schematic diagram of the anti-pinch hand detection assembly of the application.

[0016] In the drawings:

[0017] 1, storage table; 2, L-shaped support; 3, illuminating lamp; 4, support frame; 5, foot cup; 6, multi-section telescopic electric cylinder; 7, rotation and stop adjusting assembly; 71, fixed sleeve; 72, connecting plate; 73, rotation shaft; 74, threaded rod; 75, annular sliding plate; 76, rubber block; 77, annular push plate; 78, first spring; 79, hand screw nut; 8, automatic rotation material taking assembly; 81, installation box; 82, support bearing; 83, driving motor; 84, driving gear; 85, annular material plate; 86, material box; 87, anti-pinch hand detection assembly; 871, U-shaped hollow frame; 872, first threading pipe; 873, U-shaped movable frame; 874, fixed plate; 875, second threading pipe; 876, second spring; 877, support pipe; 878, diffuse reflection optical fiber sensor; 88, control panel; 89, anti-pinch box cover structure; 891, box cover main body; 892, movable cover plate; 893, hinge; 894, material taking opening. DETAILED DESCRIPTION

[0018] The application will be specifically described below in combination with the drawings, such as the drawings Figure 1 and the drawings Figure 2As shown, a kind of material plate angle adjusting workbench, including the upper rear side of storage platform 1, the upper rear side of storage platform 1 is fixedly connected with L-shaped support 2, and the horizontal section lower front side of L-shaped support 2 is fixedly connected with illuminating lamp 3;Storage platform 1 lower part is fixedly connected with support frame 4, and the lower part of the four corner parts of support frame 4 is respectively fixedly connected with foot cup 5;The lower rear side of storage platform 1 left and right sides is respectively fixedly connected with multi-section telescopic electric cylinder 6;Multi-section telescopic electric cylinder 6 are all located in the inside of support frame 4.

[0019] One of the material plate angle adjusting workbench further includes rotation stop adjusting assembly 7 and automatic rotation material taking assembly 8, and rotation stop adjusting assembly 7 is respectively fixedly connected at the front end of the output rod of multi-section telescopic electric cylinder 6;Automatic rotation material taking assembly 8 is fixedly connected between rotation stop adjusting assembly 7, the setting angle of automatic rotation material taking assembly 8 can be directly adjusted by rotation stop adjusting assembly 7, and the parts can be stored and automatically moved by automatic rotation material taking assembly 8, which is beneficial to the effect that the operator can take the parts without hindering the installation of mechanical equipment, and the use is more convenient.

[0020] Combine with the drawings Figure 3 As shown, the rotation stop adjusting assembly 7 includes fixed sleeve 71, the outer wall of fixed sleeve 71 is fixedly connected with connecting plate 72 at the upper side;Rotary shaft 73 is rotatably arranged in the inside of fixed sleeve 71;Arc-shaped through slot is formed in the inside of fixed sleeve 71 at the lower side, and threaded rod 74 is arranged in the inside of arc-shaped through slot, wherein the upper end of threaded rod 74 is fixedly connected with the outer wall of rotary shaft 73 at the lower side;Annular sliding plate 75 is slidably arranged on the outer wall of threaded rod 74, and rubber block 76 is fixedly connected with annular sliding plate 75 at the upper part;Threaded rod 74 is slidably penetrated through the inside of rubber block 76;Arc-shaped recess is formed in the inside of rubber block 76 at the upper side, and rubber block 76 is abutted on the outer wall of fixed sleeve 71 through arc-shaped recess;Annular push plate 77 is also slidably arranged on the outer wall of threaded rod 74, and annular push plate 77 is located at the lower side of annular sliding plate 75;First circular recess is formed in the inside of annular sliding plate 75 at the lower side;Second circular recess is formed in the inside of annular push plate 77 at the upper side, wherein first spring 78 is arranged between the inside of first circular recess and second circular recess, and first spring 78 is sleeved on the outside of threaded rod 74;Hand screw nut 79 is also threadedly connected on the outer wall of threaded rod 74, and hand screw nut 79 is abutted on the lower part of annular push plate 77;

[0021] When it is necessary to adjust the setting angle of the automatic rotating taking component 8, the operator can directly push up or down the front side of the automatic rotating taking component 8, at this time, the automatic rotating taking component 8 will drive the rotating shaft 73 to rotate inside the fixed sleeve 71, and the rotating shaft 73 will also drive the rubber block 76 to slide on the outer wall of the fixed sleeve 71 through the threaded rod 74 and the annular sliding plate 75. Since the first spring 78 can provide a certain thrust force for the annular sliding plate 75, the rubber block 76 will be tightly pressed against the outer wall of the fixed sleeve 71, and then there will be a large friction force between the fixed sleeve 71 and the rubber block 76, so that the rotating shaft 73 cannot move by itself under the condition that it is not subjected to external force, and the automatic rotating taking component 8 will remain at the adjusted angle and will not move by itself, achieving the effect of facilitating the adjustment of the setting angle of the automatic rotating taking component 8, so as to facilitate the operator to adjust the automatic rotating taking component 8 to a comfortable angle for work. When the friction force between the rubber block 76 and the fixed sleeve 71 decreases, the operator can rotate the hand-tightened nut 79, so that the hand-tightened nut 79 further extrudes the first spring 78 through the annular push plate 77, thereby increasing the thrust force of the first spring 78 acting on the annular sliding plate 75, and then the friction force between the rubber block 76 and the fixed sleeve 71 can be effectively increased, achieving the effect of adjusting the friction force between the rubber block 76 and the fixed sleeve 71.

[0022] Combining the drawings Figure 4 As shown in the drawings, the automatic rotating taking component 8 comprises a mounting box 81, and a support bearing 82 is fixedly connected to the middle part of the inner bottom of the mounting box 81. A drive motor 83 is fixedly connected to the lower right side of the mounting box 81, and the upper end of the output shaft of the drive motor 83 penetrates the inside of the mounting box 81, wherein the upper end of the output shaft of the drive motor 83 is fixedly connected to a driving gear 84. The driving gear 84 is in meshing transmission connection with the support bearing 82. An annular material plate 85 is fixedly connected to the upper part of the support bearing 82, and the drive motor 83 can drive the annular material plate 85 to rotate through the driving gear 84 and the support bearing 82 after being started. A plurality of material boxes 86 for storing parts are fixedly connected to the upper part of the annular material plate 85. An anti-pinch hand detection assembly 87 is fixedly connected to the opening in the middle lower side of the inside of the mounting box 81, and the anti-pinch hand detection assembly 87 is located above the material box 86 on the front side. A control panel 88 is fixedly connected to the middle lower side of the front part of the mounting box 81. An anti-pinch box cover structure 89 is connected to the upper part of the mounting box 81. The left and right sides of the outer wall of the mounting box 81 are respectively fixedly connected to the inner ends of the rotating shafts 73. The mounting box 81 is a stainless steel box with a circular cross section.

[0023] The illuminating lamp 3, the multi-section telescopic electric cylinder 6, the drive motor 83 and the anti-pinch hand detection assembly 87 are respectively in electrical connection with the control panel 88.

[0024] When using the workbench, first start the multi-section telescopic electric cylinder 6 through the control panel 88, drive the mounting box 81 to move to the front side through the rotating stop adjustment assembly 7, until the mounting box 81 moves to the front side of the storage table 1, then the operator can remove the anti-pinch box cover structure 89 from the upper part of the mounting box 81, then place various parts into the material box 86 respectively, then the operator can set the rotating direction and the number of turns of the driving motor 83 each time through the control panel 88 according to the taking sequence of the parts, set the anti-pinch box cover structure 89 on the upper part of the mounting box 81, and start the multi-section telescopic electric cylinder 6 through the control panel 88 until the mounting box 81 resets; During the process of taking and placing the parts, the operator's hand enters and moves out of the material box 86 as one taking action, when the control panel 88 detects that the operator's hand completes one taking action through the anti-pinch hand detection assembly 87, the control panel 88 will automatically control the driving motor 83 to start, so that the driving motor 83 moves according to the predetermined rotating direction and the number of turns, at this time, the driving motor 83 drives the material box 86 to move through the driving gear 84, the support bearing 82 and the annular material plate 85, until the next material box 86 moves to the lower side of the anti-pinch hand detection assembly 87, then the operator can take the next part, and so on, so as to achieve the effect of taking and placing the parts in sequence without the operator observing and finding the parts to be taken and placed; Since the mounting box 81 is located at the lower part of the storage table 1, the placement of the material box 86 does not occupy the table surface space of the storage table 1, and does not hinder the installation of the mechanical equipment, and the operator can easily take and place the parts, which is more convenient to use, and achieves the effect of facilitating the operator to take and place the parts without hindering the installation of the mechanical equipment.

[0025] In combination with the accompanying drawings Figure 5 As shown in the drawings, the anti-pinch box cover structure 89 comprises a box cover body 891, a semicircular opening is formed in the front upper side of the box cover body 891, and a movable cover plate 892 is arranged on the upper front side of the box cover body 891, wherein the movable cover plate 892 is arranged on the upper side of the semicircular opening; one end of a hinge 893 is fixedly connected to the left and right sides of the rear part of the movable cover plate 892, and the other end of the hinge 893 is fixedly connected to the left and right sides of the upper part of the box cover body 891; a material taking opening 894 is formed in the middle front side of the inside of the movable cover plate 892; the box cover body 891 is arranged on the upper part of the mounting box 81; the material taking opening 894 is arranged opposite to the material box 86 on the front side; the material taking opening 894 is located on the front side of the storage table 1; the box cover body 891 is made of stainless steel which is matched with the upper part of the mounting box 81; the movable cover plate 892 is made of a semicircular stainless steel plate;

[0026] When the parts are taken out, the operator can take out the parts in the box 86 through the taking-out port 894; since the movable cover plate 892 is connected with the box cover main body 891 through the hinge 893, when the shearing force is accidentally formed between the taking-out port 894 and the box 86, the operator can directly pull the hand upwards, at this time, the hand of the operator can drive the movable cover plate 892 to move upwards, so that the hand of the operator can more easily escape from the shearing force, thereby avoiding the problem that the hand of the operator is clamped.

[0027] The drawings Figure 6 As shown, the anti-pinch hand detection assembly 87 comprises a U-shaped hollow frame 871, both ends of the U-shaped hollow frame 871 are integrally connected with first threading pipes 872 at the middle openings; the U-shaped hollow frame 871 is symmetrically sleeved with U-shaped movable frames 873 at both ends, and the inside rear sides of the U-shaped movable frames 873 are integrally connected with fixed plates 874, respectively; the rear middle parts of the fixed plates 874 are integrally connected with second threading pipes 875, respectively; the outer walls between the second threading pipes 875 and the first threading pipes 872 are fixedly connected with second springs 876, respectively; the lower middle parts of the U-shaped hollow frame 871 are fixedly connected with a support pipe 877; the inside openings of the vertical sections of the U-shaped movable frames 873 are fixedly connected with diffuse reflection fiber sensors 878 from front to back, respectively, and the diffuse reflection fiber sensors 878 are located on the front sides of the fixed plates 874, respectively; the wires of the diffuse reflection fiber sensors 878 sequentially pass through the second threading pipes 875, the second springs 876, the first threading pipes 872, the U-shaped hollow frame 871 and the support pipe 877 and extend to the outside of the support pipe 877; the outer wall of the support pipe 877 is fixedly connected to the inside middle lower opening of the mounting box 81; the U-shaped movable frames 873 are located on the left and right sides of the upper side of the box 86 on the front side, respectively; the wires of the diffuse reflection fiber sensors 878 are electrically connected with the control panel 88, respectively;

[0028] When the hand of the operator passes between the U-shaped movable frame 873, the control panel 88 can detect the hand of the operator through the diffuse reflection optical fiber sensor 878, when the hand of the operator is away from the U-shaped movable frame 873, the control panel 88 can detect that the hand of the operator has left through the diffuse reflection optical fiber sensor 878, and then the control panel 88 can automatically control the driving motor 83 to start, so as to adjust the position of the parts; because the second threading pipe 875 on the U-shaped movable frame 873 is connected with the first threading pipe 872 through the second spring 876, when the U-shaped movable frame 873 is subjected to an outward force, the U-shaped movable frame 873 will drive the second spring 876 to bend, and then the U-shaped movable frame 873 will move, at this time, the U-shaped movable frame 873 and the material box 86 will not generate a large shear force, which can effectively prevent the hand of the operator from being injured by the material box 86 and the U-shaped movable frame 873, and can effectively improve the safety of taking materials.

[0029] The technical solutions of the present application or the technical solutions inspired by the present application can achieve the above technical effects, and are within the protection scope of the present application.

Claims

1. A material board angle adjusting workbench, comprising a storage table (1), the upper rear side of the storage table (1) is fixedly connected with an L-shaped support (2), and the lower horizontal section of the L-shaped support (2) is fixedly connected with a lighting lamp (3) at the front side; the lower part of the storage table (1) is fixedly connected with a support frame (4), and the lower four corner parts of the support frame (4) are respectively fixedly connected with foot cups (5), characterized in that, The lower rear side of the storage platform (1) is fixedly connected with a plurality of telescopic electric cylinders (6), and the output rods of the plurality of telescopic electric cylinders (6) are fixedly connected with rotary stop adjusting assemblies (7) at the front ends, wherein the inner sides of the rotary stop adjusting assemblies (7) are fixedly connected with automatic rotary material taking assemblies (8), the setting angle of the automatic rotary material taking assemblies (8) can be directly adjusted through the rotary stop adjusting assemblies (7), and the automatic rotary material taking assemblies (8) can store and automatically move parts; the plurality of telescopic electric cylinders (6) are located on the inner side of the support frame (4); the automatic rotary material taking assemblies (8) comprise a mounting box (81), and the inner bottom middle part of the mounting box (81) is fixedly connected with a support bearing (82); a driving motor (83) is fixedly connected to the lower middle right side of the mounting box (81), and the output shaft upper end of the driving motor (83) penetrates the inside of the mounting box (81), wherein the output shaft upper end of the driving motor (83) is fixedly connected with a driving gear (84); the driving gear (84) and the support bearing (82) are in meshing transmission connection; the upper part of the support bearing (82) is fixedly connected with an annular material plate (85), and after the driving motor (83) is started, the annular material plate (85) can be driven to rotate through the driving gear (84) and the support bearing (82); a plurality of material boxes (86) are fixedly connected to the upper part of the annular material plate (85) and are used for storing parts; a hand anti-pinch detection assembly (87) is fixedly connected to the opening of the inner middle lower side of the mounting box (81), and the hand anti-pinch detection assembly (87) is also located on the upper side of the material box (86) on the front side; a control panel (88) is fixedly connected to the front middle lower side of the mounting box (81); an anti-pinch box cover structure (89) is connected to the upper part of the mounting box (81); the rotary stop adjusting assemblies (7) respectively comprise a fixed sleeve (71), and the outer wall middle upper side of the fixed sleeve (71) is fixedly connected with a connecting plate (72); a rotating shaft (73) is rotationally arranged in the inside of the fixed sleeve (71); an arc-shaped through slot is formed in the inner middle lower side of the inside of the fixed sleeve (71), and a threaded rod (74) is arranged on the inner side of the arc-shaped through slot, wherein the upper end of the threaded rod (74) is fixedly connected with the outer wall lower side of the rotating shaft (73); an annular sliding plate (75) is slidably arranged on the outer wall of the threaded rod (74), and a rubber block (76) is fixedly connected to the upper part of the annular sliding plate (75); the threaded rod (74) slidably penetrates the inside of the rubber block (76); an arc-shaped groove matched with the outer wall of the fixed sleeve (71) is formed in the inner upper side of the rubber block (76), and the rubber block (76) is abutted against the outer wall of the fixed sleeve (71) through the arc-shaped groove; an annular push plate (77) is also slidably arranged on the outer wall of the threaded rod (74), and the annular push plate (77) is located on the lower side of the annular sliding plate (75); a first circular groove is formed in the inner middle lower side of the annular sliding plate (75);The second circular groove is arranged on the upper side of the inner side of the annular push plate (77), and the first spring (78) is arranged between the second circular groove and the first circular groove on the inner side, and the first spring (78) is sleeved on the outer side of the threaded rod (74); the outer wall of the threaded rod (74) is also threadedly connected with the hand nut (79), and the hand nut (79) is abutted against the lower part of the annular push plate (77).

2. The sheet angle adjustment table according to claim 1, wherein The rear upper side of the connecting plate (72) is fixedly connected with the front end of the output rod of the multi-section telescopic electric cylinder (6).

3. The sheet angle adjustment table according to claim 2, wherein The left and right sides of the outer wall of the mounting box (81) are fixedly connected with the inner end of the rotating shaft (73).

4. The sheet angle adjustment table according to claim 3, wherein The anti-pinch box cover structure (89) comprises a box cover body (891), a semicircular opening is formed in the front upper side of the box cover body (891), and a movable cover plate (892) is arranged on the upper side of the box cover body (891); one end of a hinge (893) is fixedly connected to the rear left and right sides of the movable cover plate (892), and the other end of the hinge (893) is fixedly connected to the left and right sides of the upper part of the box cover body (891); a material taking opening (894) is formed in the front inner side of the movable cover plate (892).

5. The sheet angle adjustment table according to claim 4, wherein The box cover body (891) is arranged on the upper part of the mounting box (81); and the material taking opening (894) is arranged opposite to the material box (86).

6. The sheet angle adjustment table according to claim 5, wherein The material taking opening (894) is located on the front side of the storage table (1).

7. The sheet angle adjustment table according to claim 6, wherein The anti-pinch hand detection assembly (87) comprises a U-shaped hollow frame (871), first threading pipes (872) are integrally connected to the middle openings of the two ends of the U-shaped hollow frame (871); U-shaped movable frames (873) are symmetrically sleeved on the two ends of the U-shaped hollow frame (871), and fixed plates (874) are integrally connected to the inner rear sides of the U-shaped movable frames (873); second threading pipes (875) are integrally connected to the rear middle openings of the fixed plates (874); second springs (876) are fixedly connected to the outer walls between the first threading pipes (872) and the second threading pipes (875); a supporting pipe (877) is fixedly connected to the middle opening of the lower part of the U-shaped hollow frame (871); diffuse reflection fiber sensors (878) are fixedly connected to the inner openings of the vertical sections of the U-shaped movable frames (873) from front to back; the wires of the diffuse reflection fiber sensors (878) pass through the second threading pipes (875), the second springs (876), the first threading pipes (872), the U-shaped hollow frame (871) and the supporting pipe (877) in sequence and extend to the outside of the supporting pipe (877).

8. The sheet angle adjustment table according to claim 7, wherein The lower side of the outer wall of the supporting pipe (877) is fixedly connected to the inner middle lower opening of the mounting box (81); and the U-shaped movable frames (873) are arranged on the left and right sides of the upper side of the material box (86).

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