Whole plate feeding and discharging device

Abstract

The utility model relates to a whole plate feeding and discharging device which comprises a movable lifting arm frame module. A separation module; an adsorption module; a holding fork module; the movable lifting arm frame module is used for bearing and moving other modules; the separation module is arranged at one corner of the movable lifting arm frame module; the adsorption module is arranged below the movable lifting arm frame module; the embracing fork module comprises a left embracing fork and a right embracing fork which are arranged on the two sides of the movable lifting arm frame module respectively and connected with the movable lifting arm frame module. According to the whole-plate feeding and discharging device, steel plate separation, whole-plate feeding of the steel plates and whole discharging after cutting are integrally completed.

Description

Technical Field

[0001] The utility model relates to the field of loading and unloading devices, in particular to a whole plate loading and unloading device. Background Art

[0002] In modern manufacturing industry, laser or plasma cutting machines are often used to process steel plates. During processing, most of the time, the whole steel plate is manually cut into pieces, which not only has low work efficiency and cannot meet the requirements of parallel transportation, but also poses safety risks. Steel plates and other sheet materials are stacked in multiple pieces. There are often liquids such as water and oil between the stacked steel plates. Under the adsorption of water and oil, there is a technical problem that it is difficult to separate them. After the whole steel plate is cut into many parts, there is a technical problem of how to cut the whole plate.

[0003] Therefore, how to provide an integrated loading and unloading device that can separate steel plates, load whole steel plates, and unload the entire steel plates after cutting is a technical problem that needs to be solved urgently in this field. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the utility model provides a whole plate loading and unloading device, comprising: a movable lifting arm module; a sheet separation module; an adsorption module; a fork holding module;

[0005] Movable lifting arm module, used to carry and move other modules;

[0006] A spreading module is arranged at a corner of the movable lifting arm module;

[0007] The adsorption module is arranged below the movable lifting arm module;

[0008] The fork holding module comprises a left fork holding fork and a right fork holding fork, which are respectively arranged on both sides of the movable lifting arm frame module and connected with the movable lifting arm frame module.

[0009] Furthermore, the sheet separation module comprises: a sheet separation movable part, a sheet separation telescopic part, and a sheet separation suction cup which are arranged below the movable lifting arm module from top to bottom; and a sheet separation blowing nozzle which is arranged on one side of the sheet separation suction cup.

[0010] Furthermore, the separate suction cup is in the shape of a disc, a negative pressure nozzle is arranged at the center of the disc, and the negative pressure nozzle is connected to a negative pressure air source.

[0011] Furthermore, the spreading module also includes an "L-shaped" spreading connection piece connected to the lower end of the spreading telescopic piece, and a first floating joint is provided at the end of the spreading connection piece, and the first floating joint is connected to the spreading air nozzle.

[0012] Furthermore, the sheet separation module further includes: a buffer component; the upper end of the buffer component is connected to the sheet separation telescopic component, and the lower end surface of the buffer component is lower than the lower end surface of the sheet separation suction cup.

[0013] Further, the adsorption module includes: a plurality of adsorption components arranged below the movable lifting boom module; the adsorption components are arranged in a plurality of arrays horizontally and longitudinally starting from the sheet separation module.

[0014] Further, the adsorption component includes: an adsorption moving part, an adsorption telescopic part, and a material taking suction cup arranged below the movable lifting boom module in sequence from top to bottom.

[0015] Further, the fork module further includes: a grid tray arranged on the loading interaction platform of the cutting machine and the parallel conveyor line;

[0016] The left fork or / and the right fork includes: a fork arm beam and a plurality of fork teeth arranged horizontally at equal intervals on the fork arm beam.

[0017] Further, the fork teeth include long fork teeth and short fork teeth arranged in an alternating pattern, and the long fork teeth and short fork teeth of the left fork or / and the right fork are alternately matched.

[0018] Further, the whole plate loading and unloading device further includes a plate thickness measurement module arranged on one side of the sheet separation module; the plate thickness measurement module includes a plate thickness measurement telescopic part, a clamp, and a displacement sensor. The clamp is arranged below the plate thickness measurement telescopic part, and the movable end of the displacement sensor is connected to the lower part of the clamp.

[0019] In this embodiment, a whole plate loading and unloading device of the present utility model is given. The movable lifting boom module drives the other modules carried thereon to move above the stacked steel plate raw materials and descend to a suitable position; it drives the descending adsorption module to suck the upper steel plate. At the same time, the sheet separation module separates the water and oil between the lifted upper steel plate and the lower steel plate, so that the upper steel plate is separated from the lower steel plate, avoiding the situation of taking multiple steel plates; then, the movable lifting boom module rises and moves upward to a certain height, and the left and right forks of the fork module close to prevent the single steel plate sucked by the adsorption module from falling and damaging the equipment or hurting the operator; then the movable lifting boom module moves to the loading interaction platform of the cutting machine, the left and right forks open, the adsorption module and the sheet separation module release the single steel plate, and the single steel plate is sent to the processing area of the cutting machine through the loading interaction platform of the cutting machine for processing. After the cutting process is completed, the steel plate is sent out to the loading interaction platform of the cutting machine, the left and right forks close again, and the single steel plate after the cutting process, that is, the scattered parts, are all picked up by the left and right forks. Then the movable lifting boom module drives the steel plate parts above the fork module to move to the parallel conveyor line and places the single steel plate after the cutting process on the parallel conveyor line, completing the whole plate unloading process of the steel plate. The present application provides a whole plate loading and unloading device, which realizes the integrated completion of steel plate sheet separation, whole plate loading, and overall unloading after cutting. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings. In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0021] Figure 1 Schematic diagram of an embodiment of the whole-board loading and unloading device of the present utility model;

[0022] Figure 2 Schematic diagram of an embodiment of the movable lifting boom module of the whole-board loading and unloading device of the present utility model;

[0023] Figure 3 Schematic diagram of an embodiment of the sheet separation module of the whole-board loading and unloading device of the present utility model;

[0024] Figure 4 Schematic diagram of an embodiment of the adsorption module of the whole-board loading and unloading device of the present utility model;

[0025] Figure 5 Schematic diagram of the left and right fork holders of the whole-board loading and unloading device of the present utility model;

[0026] Figure 6 Schematic diagram of an embodiment of the grid tray of the fork holder module of the whole-board loading and unloading device of the present utility model. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0028] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0029] It should also be noted that if there are directional indications involved in the embodiments of the present utility model, such as up, down, left, right, front, back..., then such directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly. In addition, if there are descriptions such as "first, second", "S1, S2", "step one, step two", etc. involved in the embodiments of the present utility model, such descriptions are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that all those that do not violate the key points of the utility model under the technical concept of the utility model should be included in the protection scope of the present utility model.

[0030] The present utility model provides a whole-board loading and unloading device, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , including: a movable lifting boom module 1; a sheet separation module 2; an adsorption module 3; a fork module 4;

[0031] The movable lifting boom module 1 is used to carry and move other modules;

[0032] The sheet separation module 2 is arranged at a corner of the movable lifting boom module 1;

[0033] The adsorption module 3 is arranged below the movable lifting boom module 1;

[0034] The fork module 4 includes a left fork 41 and a right fork 42, which are respectively arranged on both sides of the movable lifting boom module 1 and are connected to the movable lifting boom module 1.

[0035] In this embodiment, a whole-board loading and unloading device of the present utility model is provided, which can be used, but not limited to, for loading and unloading whole-board materials such as steel plates. For example, the movable lifting boom module drives other modules carried thereon to move above the stacked steel plate raw materials and descend to a suitable position; drives the descending adsorption module to suck the upper steel plate, and at the same time, the sheet separation module separates the stacked materials. For example: the water and oil between the lifted upper steel plate and the lower steel plate cause the upper steel plate and the lower steel plate to separate, avoiding the situation of taking multiple steel plates; then, the movable lifting boom module rises, moves up to a certain height, and the left and right forks of the fork module close to prevent the single steel plate sucked by the adsorption module from falling and damaging the equipment or hurting the operator; then the movable lifting boom module moves to the loading and unloading interaction platform of the cutting machine, the left and right forks open, the adsorption module and the sheet separation module release the single steel plate, and the single steel plate is sent to the processing area of the cutting machine through the loading and unloading interaction platform of the cutting machine for processing. After the cutting process is completed, the steel plate is sent out to the loading and unloading interaction platform of the cutting machine, and the left and right forks close again. The single steel plate that has completed the cutting process, that is, the scattered parts, are all picked up by the left and right forks, and then the movable lifting boom module drives the steel plate parts above the fork module to move to the parallel conveyor line, and places the single steel plate that has completed the cutting process on the parallel conveyor line to complete the whole-board unloading process of the steel plate. It should be noted that the key of this application is to provide a whole-board loading and unloading device, which realizes the integration process of steel plate sheet separation, whole-board loading of steel plates, and whole-board unloading of steel plates after cutting from the mechanical structure. The specific control process, action time, driving path, etc. of the movement, lifting, and action of each module can be realized by programmable logic devices such as PLC, and will not be elaborated here.

[0036] Preferably, referring to Figure 1 , the movable lifting boom module 1 includes a support frame 11 and a cross beam 12 arranged between the support frames; more preferably, it further includes: a flange connecting member 13 and a driving component arranged in the middle of the movable lifting boom module 1.

[0037] In this embodiment, a flange connecting member is arranged in the center of the movable lifting boom module to connect the driving component. The driving component is used to drive the movable lifting boom module to move in all directions of front, back, left, right, up and down, realizing the automatic movement and lifting of the movable lifting boom module, without manual pushing, reducing the labor intensity of workers; at the same time, preventing the movable lifting boom module from deforming and improving the service life of the device; preferably, referring to Figure 2 , there are two symmetrically arranged flange connecting members to realize the stable movement of the movable lifting boom module; optionally, the driving component can be a movable truss, a tower crane, a mobile robot, etc. to meet the movement needs of the movable lifting boom module.

[0038] Preferably, a number of height sensors are arranged on the movable lifting boom module 1.

[0039] In this embodiment, a number of height sensors are added to the movable lifting boom module to correct the attitude of the movable lifting boom module, such as correcting the horizontal position of the movable lifting boom module; at the same time, the height distance between the movable lifting boom module and the stacked steel plate raw materials is measured to improve the accuracy of the movement of the movable lifting boom module, avoid damaging the equipment, and improve the safety of the whole plate loading and unloading device.

[0040] Preferably, referring to Figure 3 , the sheet separation module 2 includes: a sheet separation moving member 21, a sheet separation telescopic member 22, and a sheet separation suction cup 23 that are sequentially arranged below the movable lifting boom module from top to bottom; and a sheet separation blowing nozzle 26 arranged on one side of the sheet separation suction cup. Specifically, the sheet separation moving member 21 is connected to the lower part of the movable lifting boom module 1 and is used to adjust the position of the sheet separation module 2; the lower end of the sheet separation telescopic member 22 is connected to the sheet separation suction cup 23; the sheet separation blowing nozzle 26 is arranged on one side of the sheet separation suction cup 23.

[0041] In this embodiment, the sheet separation moving member of the sheet separation module is connected to the movable lifting boom module and is used to adjust the position of the sheet separation module, improving the position adjustment range of the sheet separation module; the lower end of the sheet separation telescopic member of the sheet separation module is connected to the sheet separation suction cup, increasing the up and down adjustment range of the sheet separation suction cup, so as to facilitate the sheet separation suction cup to better fit the upper steel plate and enhance the adsorption effect of the sheet separation suction cup; the sheet separation blowing nozzle arranged below one side of the sheet separation suction cup blows air to disperse and dry the water and oil between the upper steel plate and the lower steel plate, completing the separation of the upper steel plate; optionally, the sheet separation air nozzle is connected to a high-pressure air source, and a pressure regulating member is arranged between the high-pressure air source and the sheet separation air nozzle to adjust the air pressure of the sheet separation air nozzle blowing, coordinating the working efficiency of the sheet separation blowing nozzle and the energy consumption of the high-pressure air source, and realizing cost reduction and efficiency increase; the adjustable range of the sheet separation module is large, and the structural reliability is high, which can realize the efficient and stable separation of the upper and lower steel plates. For example, referring to Figure 3 , the sheet separation moving member is a movable hoop connected to the cross beam and is fixed on the cross beam of the movable lifting boom module by bolts, and the position of the movable hoop on the cross beam can be manually adjusted. Optionally, the sheet separation moving member is a slider, a slide rail, etc. arranged on the cross beam whose position can be adjusted, and the position of the sheet separation module on the cross beam is adjusted by a driving member, which is not limited by the drawings. Optionally, the sheet separation telescopic member is a telescopic cylinder, a telescopic electric cylinder, a worm and worm gear or an adjustable screw rod, etc. More preferably, the sheet separation suction cup 23 is disc-shaped, and a negative pressure nozzle 24 is arranged at the central position of the disc, and the negative pressure nozzle 24 is connected to a negative pressure air source, increasing the adsorption area and adsorption force between the sheet separation suction cup and the upper steel plate. Optionally, the material of the sheet separation suction cup is rubber to achieve the technical effect of more stable adsorption with the upper steel plate.

[0042] More preferably, referring to Figure 2, the sheet separation module 2 further includes a buffer member 27; the upper end of the buffer member 27 is connected to the sheet separation telescopic member 22, and the lower end surface of the buffer member 27 is lower than the lower end surface of the sheet separation suction cup 23.

[0043] In this embodiment, a buffer member is added to the sheet separation module. The lower end surface of the buffer member is lower than the lower end surface of the sheet separation suction cup. When the lower end surface of the sheet separation suction cup contacts the upper steel plate when the sheet separation telescopic member 22 extends, the lower end surface of the buffer member 27 contacts the upper steel plate first, playing a role in buffering the sheet separation suction cup and reducing the rigid impact; more preferably, the buffer members 27 are symmetrically arranged on both sides of the sheet separation module, and the impact forces received by the buffer members at the left and right ends can cancel each other out to a certain extent, achieving a better buffering effect; when the impact ends, the two buffer members and the sheet separation suction cup form a stable triangular structure, enabling the sheet separation suction cup to adsorb more firmly on the upper steel plate. More preferably, the sheet separation module 2 further includes an "L-shaped" sheet separation connecting member connected to the lower end of the sheet separation telescopic member. A first floating joint is provided at the end of the sheet separation connecting member, and the first floating joint is connected to the sheet separation air nozzle 26, expanding the adjustable angle of the sheet separation air nozzle 26, improving the accuracy of the blowing direction of the sheet separation air nozzle during sheet separation of the device, and improving the sheet separation efficiency.

[0044] Preferably, referring to Figure 1 and Figure 4 , the adsorption module 3 includes: a plurality of adsorption components 3 provided below the movable lifting boom module; the adsorption components 3 are arranged in a plurality of arrays horizontally and vertically starting from the sheet separation module 2. More preferably, the adsorption component 3 includes: an adsorption moving member 31, an adsorption telescopic member 32, and a material taking suction cup 33 provided above the adsorption component 3; the upper part of the adsorption moving member 31 is connected to the lower part 12 of the movable lifting boom module 1; the adsorption telescopic member 32 is arranged between the adsorption moving member 31 and the material taking suction cup 33.

[0045] In this embodiment, a plurality of adsorption components are provided below the movable lifting boom module and are arranged in a plurality of arrays horizontally and vertically starting from the sheet separation module. Each time, taking the sheet separation module as the positioning base point, different combinations of horizontal and vertical sheet separation components are selected to adapt to steel plates of different length and width specifications, improving the applicable range of the entire sheet loading and unloading device. An adsorption moving member is provided above the adsorption component, and an adsorption telescopic member is arranged between the material taking suction cup and the adsorption moving member to expand the position adjustment range of the material taking suction cup and enhance the adsorption effect of the suction cup. More preferably, a second floating joint is arranged between the adsorption telescopic member and the material taking suction cup to expand the adjustable angle of the material taking suction cup. More preferably, referring to Figure 4, the material suction cup is disc-shaped, and a suction nozzle 34 is arranged at the central position of the disc. The suction nozzle 34 is connected to a negative pressure air source to increase the adsorption area and adsorption force between the material suction cup and the upper steel plate. Optionally, the material of the material suction cup is rubber to achieve a more stable technical effect of adsorbing to the upper steel plate. Optionally, the separating suction cup of the separating module and the suction cup of the adsorption assembly on the adsorption module can also adopt an electromagnetic suction cup or other suction cups with adsorption ability, which is not limited by the drawings.

[0046] Preferably, referring to Figure 5 and Figure 6 , the fork module 4 further includes a grid tray 6 arranged on the loading interaction platform of the cutting machine and the parallel conveyor line; the left fork 41 or / and the right fork 42 includes: a fork arm beam 411 and a plurality of fork teeth 412 arranged horizontally at equal intervals on the fork arm beam 411.

[0047] In this embodiment, the fork module further includes a grid tray arranged on the loading interaction platform of the cutting machine and the parallel conveyor line. After cutting, the whole steel plate is placed on the grid tray, and the fork teeth of the left fork or / and the right fork pass through the gaps of the grid tray and close to hold the cut steel plate, realizing the blanking of the whole steel plate, preventing the cut steel plate parts from falling and damaging the equipment and hurting the operators. At the same time, it reduces material loss and processing costs.

[0048] More preferably, the fork teeth 412 include long fork teeth 412a and short fork teeth 412b arranged alternately, and the long fork teeth 412a and short fork teeth 412b of the left fork or / and the right fork are alternately matched.

[0049] In this embodiment, the left fork or / and the right fork are provided with long and short fork teeth arranged alternately. When the left and right forks are closed, the long and short fork teeth of the left fork or / and the right fork can be alternately matched, and the small gaps at the joint will form a tooth-shaped line gap instead of a straight gap, preventing the cut steel plate parts from falling from the straight gap at the joint, further reducing the possibility of the steel plate parts falling, preventing the equipment from being damaged and the operators from being hurt. At the same time, it reduces material loss and processing costs.

[0050] Preferably, referring to Figure 1 , the fork module further includes a fork driving member 43, a plurality of fork arms 44 arranged on the left and right forks, and a fork transmission member 45. The fork driving member 43 is arranged on one side of the movable lifting arm module 1, and the fork arms 44 are connected to the fork transmission member 45.

[0051] In this embodiment, a number of fork arms are provided on the left and right fork holders. The fork driving member drives the fork transmission member to simultaneously close and open the left and right fork holders, with good synchronism. More preferably, the fork transmission assembly includes a transmission shaft and a transmission chain. The transmission chain is arranged in the hollow accommodating cavity in the fork arm and is connected to the fork arm, reducing the wear of sundries such as dust and debris on the transmission assembly in a complex environment and improving the service life of the transmission assembly and the device.

[0052] Preferably, referring to Figure 1 , the whole plate loading and unloading device further includes a plate thickness measurement module 5 arranged on one side of the sheet separation module 2. The plate thickness measurement module 5 includes a plate thickness measurement telescopic member 51, a clamp 52, and a displacement sensor 53. The clamp 52 is arranged below the plate thickness measurement telescopic member 51, and the movable end of the displacement sensor 53 is connected to the lower part of the clamp 52.

[0053] In this embodiment, for the whole plate loading and unloading device, a plate thickness measurement module is added on one side of the sheet separation module. After the steel plate is separated, the plate thickness telescopic member of the plate thickness measurement module extends, the clamp clamps the separated steel plate, the lower part of the clamp drives the movable end of the displacement sensor to move, and the displacement sensor obtains the thickness of the steel plate according to the displacement change amount of the movable end. The thickness of the steel plate measured by the displacement sensor is compared with the thickness of a single steel plate. If it is consistent with the thickness of a single steel plate, the steel plate separation is successful, and the separated single steel plate enters the next working process. If it is inconsistent with the thickness of a single steel plate, it is reset and the steel plate separation is carried out again to prevent multiple steel plates from entering the next working process after the separation fails. Adding a plate thickness measurement module to the whole plate loading and unloading device can better verify the accuracy of the sheet separation module. More preferably, the plate thickness measurement module further includes an alarm or / and an alarm lamp connected to the displacement sensor, which is used to prompt whether the steel plate separation is successful. For example, when the plate thickness measurement module detects a single steel plate, the alarm lamp shows green and the alarm does not sound. When the plate thickness measurement module detects multiple steel plates, the alarm lamp shows red and the alarm emits a continuous beeping sound.

[0054] The above-described embodiments only represent several implementation manners of the present invention, and the description is relatively specific and detailed. The combination of its technical effects and technical features will not be elaborated here, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. A whole plate loading and unloading device, characterized in that: include: Movable lifting arm module; Sheeting module; Adsorption module; Fork holding module; Movable lifting arm module, used to carry and move other modules; A spreading module is arranged at a corner of the movable lifting arm module; The adsorption module is arranged below the movable lifting arm module; The fork holding module comprises a left fork holding fork and a right fork holding fork, which are respectively arranged on both sides of the movable lifting arm frame module and connected with the movable lifting arm frame module.

2. The whole plate loading and unloading device according to claim 1 is characterized in that: The sheet separation module comprises: a sheet separation moving part, a sheet separation telescopic part, and a sheet separation suction cup which are arranged below the movable lifting arm frame module from top to bottom; and a sheet separation blowing nozzle arranged on one side of the sheet separation suction cup.

3. The whole plate loading and unloading device according to claim 2 is characterized in that: The split suction cup is in the shape of a disc, and a negative pressure nozzle is arranged at the center of the disc, and the negative pressure nozzle is connected to a negative pressure air source.

4. The whole plate loading and unloading device according to claim 3 is characterized in that: The spreading module also includes an "L-shaped" spreading connection piece connected to the lower end of the spreading telescopic piece. A first floating joint is provided at the end of the spreading connection piece, and the first floating joint is connected to the spreading air nozzle.

5. The whole plate loading and unloading device according to claim 2, characterized in that: The sheet separation module also includes a buffer component; the upper end of the buffer component is connected to the sheet separation telescopic component, and the lower end surface of the buffer component is lower than the lower end surface of the sheet separation suction cup.

6. The whole plate loading and unloading device according to claim 1, characterized in that: The adsorption module comprises: a plurality of adsorption components arranged below the movable lifting arm frame module; the adsorption components are arranged in a plurality of arrays in the horizontal and vertical directions with the sheeting module as the starting point.

7. The whole plate loading and unloading device according to claim 6, characterized in that: The adsorption component comprises: an adsorption movable part, an adsorption telescopic part and a material taking suction cup which are arranged in sequence from top to bottom below the movable lifting arm frame module.

8. The whole plate loading and unloading device according to claim 1, characterized in that: The fork holding module also includes: a grid tray arranged on the cutting machine feeding interactive platform and the parallel conveying line; The left-hand holding fork or / and the right-hand holding fork comprises: a fork arm beam and a plurality of fork teeth which are arranged laterally on the fork arm beam at equal intervals.

9. The whole plate loading and unloading device according to claim 8, characterized in that: The fork tines include long fork tines and short fork tines which are arranged alternately, and the long fork tines and the short fork tines of the left-hand fork or / and the right-hand fork are matched alternately.

10. The whole plate loading and unloading device according to any one of claims 1 to 9, characterized in that: It also includes a plate thickness measuring module arranged on one side of the sheeting module; the plate thickness measuring module includes a plate thickness measuring telescopic member, a clamp and a displacement sensor, the clamp is arranged below the plate thickness measuring telescopic member, and the movable end of the displacement sensor is connected to the lower part of the clamp.

Images