CN212794887U - Material platform - Google Patents

Abstract

The application belongs to the technical field of steel plate processing, and provides a material platform which comprises a platform plate, a tray arranged on the platform plate, a translation assembly and a lifting positioning assembly, wherein the tray is used for bearing a workpiece and is connected with the translation assembly; when the positioning assembly is located at the first height position, the tray is located in a positioning space formed by the surrounding of the positioning assembly, and when the positioning assembly is located at the second height position, the translation assembly can drive the tray to move between the first position and the second position. Through the laser cutting machine, the processing equipment can simultaneously process a plurality of workpieces at one time (such as laser cutting), the positioning efficiency and the transportation efficiency of the workpieces are improved, and manpower is greatly saved.

Description

Material platform

Technical Field

The application belongs to the technical field of steel sheet processing, and more specifically relates to a material platform.

Background

Steel enterprises producing plates need to regularly cut and sample produced plate coils and send the plate coils to physical processing equipment for processing and sample preparation. In order to realize that processing equipment processes a plurality of workpieces at one time, the prior art scheme adopts that a plurality of workpieces are positioned after the workpieces formed by cutting are manually and directly transported to the processing equipment from a transport trolley, and the positioning efficiency and the positioning accuracy are lower.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a material platform to the lower technical problem of positioning efficiency and positioning accuracy who relies on artifical location to exist among the solution prior art.

In order to achieve the purpose, the technical scheme adopted by the application on one hand is as follows: providing a material platform, which comprises a platform plate, a tray, a translation assembly and a lifting positioning assembly, wherein the tray, the translation assembly and the lifting positioning assembly are arranged on the platform plate, the tray is used for bearing a workpiece and is connected with the translation assembly, the lifting positioning assembly comprises a positioning assembly and a lifting assembly, and the lifting assembly drives the positioning assembly to move between a first height position and a second height position;

when the positioning assembly is located at the first height position, the tray is located in a positioning space formed by the enclosing of the positioning assembly, and when the positioning assembly is located at the second height position, the translation assembly can drive the tray to move between the first position and the second position.

Optionally, the positioning assembly includes a plurality of positioning rods, and when the tray is located at the first position, the plurality of positioning rods are arranged along the circumferential direction of the tray and enclose the positioning space.

Optionally, the lifting assembly includes a lifting cylinder and a positioning connection plate, the lifting cylinder is disposed on the platen, the positioning connection plate is located below the platen and connected to a free end of a piston of the lifting cylinder, a guide hole is disposed on the platen corresponding to the positioning rod, one end of the positioning rod is disposed on the positioning connection plate, and when the lifting cylinder drives the positioning connection plate to lift, the positioning rod rises to the first height position or falls to the second height position along the guide hole.

Optionally, a first position sensor and a second position sensor are arranged on the lifting cylinder at intervals along the telescopic direction of the lifting cylinder, the first position sensor is used for triggering a first position signal when detecting the free end of the piston of the lifting cylinder, the second position sensor is used for triggering a second position signal when detecting the free end of the piston of the lifting cylinder, the first position signal corresponds to the first height position, and the second position signal corresponds to the second height position.

Optionally, the translation assembly comprises a translation cylinder, a pull plate member and a slide rail, the slide rail and the translation cylinder are arranged on the platen, the tray is arranged on the slide rail in a sliding manner, one end of the pull plate member is connected with a free end of a piston of the translation cylinder, the other end of the pull plate member is connected with the tray, and the translation cylinder drives the pull plate member to move so as to drive the tray to reciprocate between the first position and the second position.

Optionally, a sliding block is arranged at the bottom of the tray, and the sliding block is matched with the sliding rail.

Optionally, the number of the slide rail and the number of the slide blocks are both multiple, and each slide rail is correspondingly provided with at least two slide blocks.

Optionally, a third position sensor and a fourth position sensor are arranged on the translation cylinder at intervals along the telescopic direction of the translation cylinder, the third position sensor is configured to trigger a third position signal when detecting the free end of the piston of the translation cylinder, the fourth position sensor is configured to trigger a fourth position signal when detecting the free end of the piston of the translation cylinder, the third position signal corresponds to the first position, and the fourth position signal corresponds to the second position.

Optionally, a fifth sensor is disposed on the platen, the fifth sensor being located between the first position and the second position or at the second position, the fifth sensor being configured to trigger a first control signal upon detection of a workpiece on the pallet.

Optionally, the material table is provided with at least two stations, and each station is provided with the tray, the translation assembly and the lifting positioning assembly.

The beneficial effect of this application lies in:

in the embodiment of the application, when the tray is located at the first position and the lifting assembly lifts the positioning assembly to the first height position, the workpiece is positioned through the positioning space formed by the positioning assembly, so that the positioning precision and the positioning efficiency are improved; after finishing artifical material loading, the translation subassembly drives the tray and moves to the second position, conveniently once only transports a plurality of work pieces on the tray on the second position to processing equipment simultaneously by the robot. Compared with the prior art, the processing equipment can process a plurality of workpieces at one time, the positioning efficiency and the positioning precision of the workpieces are improved, and manpower is greatly saved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view illustrating a use state of a material table according to an embodiment of the present application;

FIG. 2 is a side view of FIG. 1;

fig. 3 is a top view of a material table according to another embodiment of the present disclosure.

Wherein, in the figures, the respective reference numerals:

1-a material platform; 101-a first position; 102-a second position; 11-a tray; 111-detection wells; 121-a lifting cylinder; 122-positioning the connecting plate; 123-positioning rod; 131-a translation cylinder; 132-a puller plate; 133-a slide rail; 134-a slider; 141-a first position sensor; 142-a second position sensor; 143-a third position sensor; 144-a fourth position sensor; 145-fifth sensor; 150-a workpiece; 160-a base frame; 170-goblet plate; 180-a platen; 181-guide hole.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 3, a material table 1 provided for an application embodiment includes a table plate 180, and a tray 11, a translation assembly and a lifting positioning assembly that are disposed on the table plate 180, where the table plate 180 has a first position 101 and a second position 102, the tray 11 is used for receiving a workpiece 150 and is disposed on the translation assembly, the lifting positioning assembly includes a positioning assembly and a lifting assembly, and the lifting assembly drives the positioning assembly to ascend to a first height position or descend to a second height position along a vertical direction of the table plate 180;

when the positioning assembly is located at the first height position, the tray 11 is located in a positioning space defined by the positioning assembly, and when the positioning assembly is located at the second height position, the translation assembly can drive the tray 11 to move between the first position 101 and the second position 102.

Wherein when the tray 11 is at the first position 101, the worker positions a plurality of workpieces on the tray 11, and when the tray 11 is at the second position 102, the robot transfers the workpieces from the tray 11 to the processing equipment.

The height of the positioning space allows a plurality of workpieces 150 to be placed on the tray 11, that is, the height of the positioning space is greater than the height of the tray 11, so as to uniformly position the plurality of workpieces 150 placed on the tray 11.

Wherein, when locating component was in the second height position, tray 11 did not receive locating component's restriction, can remove under the drive of translation subassembly, so can be after artifical material loading finishes, transport tray 11 to second position 102 automatically, make things convenient for the robot to get the material.

It should be noted that the first height position and the second height position refer to heights of an end of the positioning assembly away from the ground, and the first height position should be larger than the second height position. Alternatively, the first height position and the second height position are the heights of the end of the positioning assembly away from the ground from the platen 180, and the first height position should be greater than zero, and the second height position may be less than or equal to zero, i.e., the first height position should be greater than the second height position.

In this embodiment, when the tray 11 is located at the first position and the lifting assembly lifts the positioning assembly to the first height position, the positioning space formed by the positioning assembly is used for positioning the workpiece, so that the positioning accuracy and the positioning efficiency are improved; after finishing manual feeding at the first position, the translation assembly drives the tray 11 to move to the second position, so that the robot can conveniently convey a plurality of workpieces on the tray 11 at the second position to the processing equipment at the same time. Compared with the prior art, the processing equipment can process a plurality of workpieces at one time (such as laser cutting) simultaneously, the positioning efficiency and the positioning precision of the workpieces are improved, and manpower is greatly saved.

Optionally, referring to fig. 1, 2 and 3, the positioning assembly includes a plurality of positioning rods 123, and when the tray 11 is at the first position 101, the plurality of positioning rods are arranged along the circumferential direction of the tray 11 and enclose the positioning space. In other embodiments, a plurality of positioning plates may be used to form the positioning space around the tray 11.

The size of the positioning space formed by the positioning rods 123 in the horizontal plane may be greater than or equal to the size of the tray 11 in the horizontal plane.

Preferably, the size of the positioning space in the horizontal plane formed by the positioning rods 123 is equal to the size of the pallet 11 in the horizontal plane, so that the workpiece 150 interferes with other components on the platen 180 when extending out of the pallet 11.

Optionally, referring to fig. 1 to 2, the lifting assembly includes a lifting cylinder 121 and a positioning connection plate 122, the lifting cylinder 121 is disposed on the platen 180, the positioning connection plate 122 is located below the platen 180 and connected to a free end of a piston of the lifting cylinder 121, a guide hole 181 is disposed on the platen 180 corresponding to the positioning rod 123, one end of the positioning rod 123 is disposed on the positioning connection plate 122, and when the lifting cylinder 121 drives the positioning connection plate 122 to lift, the positioning rod 123 is lifted to a first height position or lowered to a second height position along the guide hole 181.

In other embodiments, the lifting cylinder 121 may be disposed below the platen 180, for example, a mounting plate may be disposed below the platen 180, the lifting cylinder 121 may be mounted on the mounting plate, and the piston free end of the lifting cylinder 121 may support the positioning plate to be lifted up and down.

In other embodiments, a synchronous belt may also be used to drive the positioning connection plate 122 to go up and down, for example, the positioning connection plate 122 is fixed on the synchronous belt, the length direction of the synchronous belt is arranged along the vertical direction of the material table 1, and the synchronous belt drives the positioning connection plate 122 to go up and down when moving.

The platen 180 may be provided with a guide hole 181 corresponding to each positioning rod 123, or may be provided with one guide hole 181 corresponding to a plurality of positioning rods 123.

As can be understood, the lifting cylinder 121 drives the positioning connection plate 122 to lift up and down along the vertical direction of the material table 1.

In one embodiment, the tray 11 is rectangular, the number of the positioning rods 123 is eight, the number of the lifting assemblies is two, and the two positioning rods 123 are set at the same corner of the tray 11 and respectively limit the workpieces 150 on the tray 11 at two vertical sides of the tray 11. The lifting cylinders 121 in the two sets of lifting assemblies can be arranged along opposite angles of the tray 11, the positioning connecting plates 122 of one set of lifting assemblies are connected with the four positioning rods 123 of the two adjacent corners, and the positioning connecting plates 122 of the other set of lifting assemblies are connected with the four positioning rods 123 of the other two adjacent corners. Optionally, the lifting cylinders 121 in the two sets of lifting assemblies are linked. In this embodiment, can fix a position with the work piece 150 corner through two locating levers 123 that are located tray 11 corner when artifical material loading, compare with the mode of fixing a position with work piece 150 border, its location is faster. Adopt two sets of lifting unit to help guaranteeing lift stability simultaneously.

In a preferred embodiment, the lifting cylinder 121 is provided with a first position sensor 141 and a second position sensor 142 at intervals along the extension direction thereof, the first position sensor 141 is used for triggering a first position signal when detecting the cylinder end of the lifting cylinder 121, the second position sensor 142 is used for triggering a second position signal when detecting the cylinder end of the lifting cylinder 121, the first position signal corresponds to the first height position, and the second position signal corresponds to the second height position.

When the first position sensor 141 detects the cylinder end of the lifting cylinder 121, the positioning component is raised to the first height position, and the lifting cylinder 121 is controlled to stop raising according to the first position signal triggered by the first position sensor 141. When the second position sensor 142 detects the cylinder end of the lift cylinder 121, indicating that the positioning assembly is lowered to the second elevation position, the lift cylinder 121 is controlled to stop lowering according to the second position signal triggered by the second position sensor 142. The arrangement of the first position sensor 141 and the second position sensor 142 can ensure that the positioning component is lifted to the right and the positioning component is lowered to the right, the positioning of the workpiece 150 is realized when the positioning component is lifted to the right, and the tray 11 is moved from the first position 101 to the second position 102 when the positioning component is lowered to the right, so that the interference is avoided and the equipment is prevented from being damaged.

The first position sensor 141 and the second position sensor 142 may be proximity switches, such as magnetic proximity switches or capacitive proximity switches.

It can be understood that the material table 1 is further provided with a first controller (not shown), the first controller is electrically connected to the first position sensor 141 and the second position sensor 142, and the first controller is also electrically connected to the driving circuit of the lifting cylinder 121. The first controller is configured to receive a first position signal triggered by the first position sensor 141 and a second position signal triggered by the second position sensor 142, and control the lifting cylinder 121 to stop when receiving the first position signal and the second position signal.

Furthermore, the material table 1 may further be provided with an ascending button (not shown) and a descending button (not shown), both of which are in telecommunication connection with the first controller, when a loading worker presses the ascending button, the first controller detects an ascending instruction and controls the free end of the piston of the ascending and descending cylinder 121 to ascend, and when receiving the first position signal, the first controller controls the free end of the piston of the ascending and descending cylinder 121 to stop ascending; when a loading person presses a descending button, the first controller detects a descending instruction and controls the free end of the piston of the lifting cylinder 121 to descend, and controls the free end of the piston of the lifting cylinder 121 to stop descending when receiving the second position signal.

Optionally, referring to fig. 1 and 3, the translation assembly includes a translation cylinder 131, a pull plate member and a slide rail 133, the slide rail 133 and the translation cylinder 131 are disposed on the platen 180, the tray 11 is slidably disposed on the slide rail 133, one end of the pull plate member is connected to the free end of the piston of the translation cylinder 131, the other end of the pull plate member is connected to the tray 11, and the translation cylinder 131 drives the pull plate member to move so as to drive the tray 11 to reciprocate between the first position 101 and the second position 102. The scheme of the embodiment is simple, and when the tray 11 bearing a certain weight is conveyed, the advantages of smoothness and stability are achieved.

Optionally, the pull plate 132 is suspended in the air and does not contact the platen 180, reducing the transport resistance. The design of the pull plate 132 allows the tray 11 to be evenly stressed, which helps to improve the stability of the moving process.

In order to further reduce the frictional resistance, a slider 134 is provided at the bottom of the tray 11, and the slider 134 is fitted with the slide rail 133. The slider 134 of the tray 11 moves on the slide rail 133 under the action of the translation cylinder 131. The slider 134 may be connected to the bottom of the tray 11 by screws.

It is understood that, in order to improve the movement stability, the number of the slide rails 133 and the slide blocks 134 may be plural, and at least two slide blocks 134 may be configured for one slide rail 133. For example, the number of the slide rails 133 is two, the number of the sliders 134 is four, the two slide rails 133 are arranged in parallel, and two sliders 134 are configured on each slide rail 133, so that the movement stability can be ensured, and the cost can be effectively controlled.

In other embodiments, other transmission methods may be used to drive the tray 11 to move. The tray 11 is driven to move, for example, by a motor and screw combination, and is not specifically described herein.

In a preferred embodiment, a third position sensor 143 and a fourth position sensor 144 are disposed on the translating cylinder 131 at intervals along the telescopic direction of the translating cylinder, the third position sensor 143 is used for triggering a third position signal when the cylinder end of the translating cylinder 131 is detected, the fourth position sensor 144 is used for triggering a fourth position signal when the cylinder end of the translating cylinder 131 is detected, the third position signal corresponds to the first position 101, and the fourth position signal corresponds to the second position 102.

When the third position sensor 143 detects the cylinder end of the translation cylinder 131, it indicates that the tray 11 is at the first position 101, and the translation cylinder 131 is controlled to stop operating according to a third position signal triggered by the third position sensor 143. When the fourth position sensor 144 detects the cylinder end of the translation cylinder 131, it indicates that the tray 11 is at the second position 102, and the translation cylinder 131 is controlled to stop according to the fourth position signal triggered by the fourth position sensor 144.

It can be understood that a second controller (not shown) is further disposed on the material table 1, the second controller is electrically connected to the third position sensor 143 and the fourth position sensor 144, and the second controller is also electrically connected to the driving circuit of the translation cylinder 131. The second controller is used for receiving a third position signal triggered by the third position sensor 143 and a fourth position signal triggered by the fourth position sensor 144, and controlling the translation cylinder 131 to stop acting when receiving the third position signal and the fourth position signal.

Wherein, can set up a master controller on material platform 1, master controller has the function of first controller and second controller concurrently.

Further, the material table 1 may further be provided with a forward button (not shown) and a backward button (not shown), both of which are in telecommunication connection with the second controller, when the feeding person presses the backward button, the second controller detects a backward instruction and controls the free end of the piston of the translation cylinder 131 to move towards the first position 101, and when receiving the third position signal, controls the free end of the piston of the translation cylinder 131 to stop moving; when the feeding person presses the advance button, the second controller detects the advance command and controls the piston free end of the translation cylinder 131 to move towards the second position 102, and controls the piston free end of the translation cylinder 131 to stop moving when the fourth position signal is received.

The third position sensor 143 and the fourth position sensor 144 may be proximity switches, such as magnetic proximity switches or capacitive proximity switches.

It will be appreciated that the lift cylinder 121 and the translation cylinder 131 each include a cylinder along which the piston can move and a piston disposed within the cylinder disposed on the platen. The free end of the piston is the end of the piston, which is positioned outside the cylinder barrel, and the cylinder end of the piston cylinder is the end of the piston, which is positioned inside the cylinder barrel. The first position sensor, the second position sensor, the third position sensor and the fourth position sensor are positioned on the cylinder barrel.

Further, referring to fig. 3, a fifth sensor 145 is provided on the platen 180, the fifth sensor 145 being located between the first position 101 and the second position 102 or at the second position 102, the fifth sensor 145 being configured to trigger the first control signal upon detection of the workpiece 150 on the tray 11. The arrangement of the fifth sensor 145 can realize automatic material taking by the robot.

The fifth sensor 145 may be a photoelectric sensor, such as a laser sensor or an infrared sensor.

Alternatively, the detection hole 111 is provided at the bottom of the tray 11, and the fifth sensor 145 is provided corresponding to the detection hole 111. When the tray 11 passes through the fifth sensor 145, the emission light emitted from the fifth sensor 145 passes through the detection hole 111, and when the workpiece 150 is placed on the tray 11, the emission light emitted from the fifth sensor 145 is reflected by the workpiece 150 and received by the fifth sensor 145, and the fifth sensor 145 triggers the first control signal. The first control signal is used to indicate that the pallet 11 has the workpiece 150 placed thereon. In other embodiments, the emitting end of the fifth sensor 145 may be disposed on one side, and the receiving end of the fifth sensor 145 may be disposed on the other side, when the tray 11 on which the workpiece 150 is placed passes, the light emitted from the emitting end is shielded by the workpiece 150, and the receiving end does not receive the light signal and starts the first control signal.

Optionally, a third controller is arranged on the material table 1, the third controller is electrically connected with the fifth sensor 145, and the third controller receives a first control signal triggered by the fifth sensor 145. Furthermore, the third controller is in communication connection with the robot, the third controller sends a control command to the robot after receiving the first control signal, and the robot executes a pickup action according to the control command.

The master controller can also have the function of a third controller.

In order to improve the utilization rate of the material platform 1, at least two stations are arranged on the material platform 1, a tray 11, a translation assembly and a lifting positioning assembly are arranged on each station, and one end of each station is an artificial feeding area while the other end is a robot feeding area. Optionally, two stations are arranged on the material platform 1, at the moment, one material platform 1 only needs to be arranged to operate for a worker, the worker can feed materials back and forth between the two stations, and the working efficiency of the worker is improved.

Preferably, the manual feeding areas of the at least two stations are located on the same side, and the robot feeding area is located on the same side, so that the safety of workers is guaranteed.

It can be understood that the material table 1 further includes a base frame 160 and a foot cup plate 170, the platen 180 is disposed on the base frame 160, and the foot cup plate 170 is disposed at the bottom of the base frame 160 for flexible adjustment for different ground surface environments, and together with the platen 180 and the base frame 160, the whole material table 1 is ensured to be level and stable.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A material table is characterized by comprising a table plate, a tray, a translation assembly and a lifting positioning assembly, wherein the tray, the translation assembly and the lifting positioning assembly are arranged on the table plate, the tray is used for bearing a workpiece and is connected with the translation assembly, the lifting positioning assembly comprises a positioning assembly and a lifting assembly, and the lifting assembly drives the positioning assembly to move between a first height position and a second height position;

when the positioning assembly is located at the first height position, the tray is located in a positioning space formed by the enclosing of the positioning assembly, and when the positioning assembly is located at the second height position, the translation assembly can drive the tray to move between the first position and the second position.

2. The material table of claim 1, wherein the positioning assembly comprises a plurality of positioning rods, and when the tray is in the first position, the plurality of positioning rods are arranged along the circumferential direction of the tray and surround the positioning space.

3. The material table according to claim 2, wherein the lifting assembly comprises a lifting cylinder and a positioning connecting plate, the lifting cylinder is arranged on the table plate, the positioning connecting plate is positioned below the table plate and connected with the free end of the piston of the lifting cylinder, a guide hole is arranged on the table plate corresponding to the positioning rod, one end of the positioning rod is arranged on the positioning connecting plate, and when the lifting cylinder drives the positioning connecting plate to lift, the positioning rod rises to the first height position or falls to the second height position along the guide hole.

4. The material table of claim 3, wherein the lift cylinder is provided with a first position sensor and a second position sensor at intervals along the extension direction of the lift cylinder, the first position sensor is used for triggering a first position signal when a cylinder end of the lift cylinder is detected, the second position sensor is used for triggering a second position signal when the cylinder end of the lift cylinder is detected, the first position signal corresponds to the first height position, and the second position signal corresponds to the second height position.

5. The material table according to claim 1, wherein the translation assembly comprises a translation cylinder, a pull plate member and a slide rail, the slide rail and the translation cylinder are arranged on the table plate, the tray is slidably arranged on the slide rail, one end of the pull plate member is connected with a free end of a piston of the translation cylinder, the other end of the pull plate member is connected with the tray, and the translation cylinder drives the pull plate member to move so as to drive the tray to move between the first position and the second position.

6. A material table according to claim 5, characterized in that a sliding block is arranged at the bottom of the tray and is matched with the sliding rail.

7. The material table as claimed in claim 6, wherein the number of the slide rails and the number of the slide blocks are multiple, and at least two slide blocks are correspondingly arranged on each slide rail.

8. The material table of claim 5, wherein a third position sensor and a fourth position sensor are arranged on the translation cylinder at intervals along the extension direction of the translation cylinder, the third position sensor is used for triggering a third position signal when a cylinder end of the translation cylinder is detected, the fourth position sensor is used for triggering a fourth position signal when the cylinder end of the translation cylinder is detected, the third position signal corresponds to the first position, and the fourth position signal corresponds to the second position.

9. A table according to claim 5, wherein a fifth sensor is provided on the platen, the fifth sensor being located at the first position, between the first position and the second position or at the second position, the fifth sensor being arranged to trigger a first control signal upon detection of a workpiece on the tray.

10. The material table according to any one of claims 1 to 9, wherein at least two stations are provided on the material table, and each station is provided with the tray, the translation assembly and the lifting and positioning assembly.

Images