Material taking device, material taking system and material taking method

Abstract

The present disclosure relates to a taking device, a taking system and a taking method, wherein the taking device comprises a first base connected to an external driving device for driving, a second base arranged below the first base, a clamping unit comprising a clamping member connected to the lower portion of the second base for picking up a pressed blank from a processing machine table, and a weighing unit connected between the first base and the second base to obtain the weight of the clamped pressed blank. Through the above technical scheme, the weighing unit is arranged between the first base and the second base of the taking device, and the weight of the pressed blank can be obtained after the clamping unit picks up the pressed blank from the processing machine table, so as to realize the weighing of the pressed blank in the taking process, simplify the weighing process flow, improve the collection efficiency of the product weight information, avoid the quality loss of the product in multiple transfers, and further ensure the accuracy of the obtained product weight information.

Description

Technical Field

[0001] This disclosure relates to the field of powder molding and preparation technology, specifically to a material handling device, material handling system and material handling method. Background Technology

[0002] In the molding process of metal powder materials, it is necessary to collect product weight information and provide corresponding feedback so that in subsequent processing, adjustments can be made to key processes such as powder distribution and pressing based on the information of the produced products, thereby continuously optimizing the molded products and improving their consistency and stability.

[0003] In related technologies, after the powder is initially pressed into a compact, the conventional process for collecting the weight information of each compact is to first use a clamp to remove the compact and place it in a weighing device for weighing, and then use a clamp to remove the compact from the weighing device and pack it into a box. The weighed data is then input into the pressing equipment. The overall system operation is not continuous, the work efficiency is low, the data collection of the pressing equipment is delayed, and the compact accuracy cannot be adjusted in time, which affects the product quality in subsequent processing processes. Summary of the Invention

[0004] The purpose of this disclosure is to provide a material handling device, system, and method to at least partially solve the problems existing in the aforementioned related technologies.

[0005] To achieve the above objectives, a first aspect of the present disclosure provides a material handling device, comprising: a first base for being connected to an external driving device and driven; a second base disposed below the first base; a clamping unit including a clamping member connected below the second base for picking up a blank from a processing machine; and a weighing unit connected between the first base and the second base to obtain the weight of the clamped blank.

[0006] Optionally, the clamping unit further includes a power supply unit for providing power to the clamping member, and a power passage connecting the power supply unit and the clamping member, wherein a locking member is provided on the power passage for maintaining the current clamping state of the clamping member when the power of the power supply unit is cut off.

[0007] Optionally, the power supply unit is mounted on the first base, and the power passage includes a first path connected to the power supply unit and a second path connected to the clamping member. The first path and the second path are configured to be mechanically locked or disengaged, wherein the locking member is disposed on the second path.

[0008] Optionally, the first base includes a first mounting plate, the power supply unit is mounted on the top surface of the first mounting plate, and the first path extends from the power supply unit downward through the first mounting plate.

[0009] Optionally, the first base further includes a connecting block disposed on the top surface of the first mounting plate for connecting an external driving device.

[0010] Optionally, the second base includes: a second mounting plate, with the clamping member mounted on the bottom surface of the second mounting plate; a support ring, spaced above the second mounting plate, with the locking member mounted on the support ring; and a support rod, connecting the second mounting plate and the support ring. The second path extends from the clamping member and sequentially penetrates the second mounting plate and the support ring, and the weighing unit is connected between the first mounting plate and the second mounting plate.

[0011] Optionally, the first base and the second base are configured to move relative to each other in the height direction to lock or disengage the first path and the second path.

[0012] Optionally, the number of clamping members is multiple, and the multiple clamping members are arranged at even intervals on the second base.

[0013] A second aspect of this disclosure provides a material handling system, comprising: a material handling device for picking up a pressed blank from a processing machine, the material handling device being the material handling device provided in the first aspect of this disclosure; a stacking table for receiving the pressed blank; and a driving device for driving the material handling device to move between the processing machine and the stacking table.

[0014] A third aspect of this disclosure provides a material handling method applied to the material handling device provided in the first aspect of this disclosure, the method comprising: picking up a blank from a processing machine; and obtaining the weight of the blank during movement of the material handling device.

[0015] Optionally, the step of picking up the blank from the processing table includes: picking up multiple blanks; the step of obtaining the weight of the blank includes: obtaining the weight after each blank is released, and calculating the weight of the released blank based on the difference between two adjacent weights.

[0016] Optionally, the method includes: when the error between the weight of any pressed blank and the standard value exceeds a preset value, transmitting an error signal to the processing machine.

[0017] Through the above technical solution, a weighing unit is set between the first base and the second base of the material picking device. The weight of the pressed blank can be obtained after the clamping unit picks up the pressed blank from the processing table, so as to realize the weighing of the product pressed blank during the material picking process, simplify the weighing process, improve the efficiency of collecting product weight information, avoid the quality loss of the product during multiple transfers, and thus ensure the accuracy of the obtained product weight information.

[0018] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of a material handling device according to an exemplary embodiment.

[0020] Figure 2 This is a schematic flowchart illustrating a material handling method according to an exemplary embodiment.

[0021] Figure 3 This is a schematic flowchart illustrating a material handling method according to an exemplary embodiment.

[0022] Figure 4 This is a schematic diagram illustrating the weighing and error feedback process according to an exemplary embodiment.

[0023] Explanation of reference numerals in the attached figures 100-First base, 110-First mounting plate, 120-Connecting block, 130-Controller, 200-Second base, 210-Second mounting plate, 220-Support ring, 230-Support rod, 310-Clamping component, 320-Power supply unit, 330-Power passage, 331-First path, 332-Second path, 340-Locking component, 400-Weighing unit, 500-Processing machine, 510-Pressure blank, 600-Stacking table. Detailed Implementation

[0024] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0025] In this disclosure, unless otherwise stated, directional terms such as "up," "down," "top," and "bottom" generally refer to the actual direction of the relevant components during use, such as up and down, top and bottom. For details, please refer to [reference needed]. Figure 1 The directions indicated by the up and down double-headed arrows are marked in the text. Furthermore, the terms "first," "second," etc., used in this disclosure are for distinguishing one element from another and do not indicate sequence or importance.

[0026] This disclosure provides a material handling device, including a first base 100, a second base 200, a clamping unit, and a weighing unit 400. For example... Figure 1As shown, the first base 100 can be connected to an external drive device to drive the material picking device in plane P. A second base 200 is provided below the first base 100. The clamping unit includes a clamping member 310 provided below the second base 200. The clamping member 310 can pick up the blank 510 from the processing table 500. A weighing unit 400 is connected between the first base 100 and the second base 200, which can obtain the weight of the blank 510 after the clamping member 310 clamps the blank 510.

[0027] In the above embodiment, the clamping member 310 for clamping the pressed blank 510 is disposed below the second base 200, and the second base 200 is connected to the first base 100 only through the weighing unit 400. The weighing unit 400 can obtain the weight information of the pressed blank 510 by the weight change below the second base 200. Since the external driving device is connected to the first base 100 above the weighing unit 400, the driving force does not interfere with the weighing process of the pressed blank 510. The entire device can accurately weigh the pressed blank 510 during the movement process, thereby ensuring the accuracy and precision of the obtained weight information. The specific form of the weighing unit 400 in this embodiment is not limited. It can be any appropriate form of gravity sensor, pressure sensor, etc. One end of it is connected to the first base 100 and the other end is connected to the second base 200. Since the clamping member 310 for picking up the blank 510 is connected to the second base 200, the aforementioned sensor can detect the weight change when the blank 510 changes, thereby feeding back the weight of the blank 510.

[0028] Accordingly, this disclosure also provides a material handling method, which utilizes the above-described material handling device, referring to... Figure 2 The material handling method may include: step S101, where the material handling device picks up the blank 510 from the processing table 500; and step S102, where the material handling device obtains the weight of the blank 510 during movement. The material handling device can clamp the blank 510 using the clamping member 310 to complete the picking action, and under the drive of an external driving device, it moves the picked-up blank 510 as a whole. The weighing unit 400 can weigh the blank 510 on the material handling device during its movement to obtain the weight of the blank 510, simplifying the weighing process and improving the efficiency of weight information acquisition.

[0029] Through the above technical solution, a weighing unit 400 is provided between the first base 100 and the second base 200 of the material handling device. After the clamping unit picks up the compact 510 from the processing table 500, the weight of the compact 510 can be obtained, so as to realize the weighing of the product compact 510 during the material handling process, simplify the weighing process, improve the efficiency of collecting product weight information, avoid quality loss of the product during multiple transfers, and thus ensure the accuracy of the obtained product weight information.

[0030] The material handling device provided in this embodiment may further include a controller 130 electrically connected to the clamping unit and the weighing unit 400 to control the picking action of the clamping member 310 and the weighing function of the weighing unit 400, respectively. The controller 130 may include a calculation module and a power distribution module, and the two modules may be integrated into a single component or be separately configured. In this embodiment, the controller 130 may be mounted on the first base 100.

[0031] According to some embodiments, the gripping unit may further include a power supply unit 320 and a power passage 330. For example... Figure 1 As shown, the power supply unit 320 can provide power to the clamping member 310, and a power passage 330 is connected between the two. A locking member 340 can be provided on the power passage 330. When the power supply unit 320 is cut off, the locking member 340 can maintain the clamping member 310 in the current clamping state, so as to ensure that the clamping member 310 can still maintain the clamping action of the blank 510 when the power supply unit 320 stops providing power, and prevent the blank 510 from falling off relative to the material handling device.

[0032] In the above embodiments, the clamping member 310 in the clamping unit clamps or releases the compact 510 by the power supplied by the power supply unit 320. This embodiment does not specifically limit the type of power supplied by the power supply unit 320, including but not limited to electric drive, hydraulic drive, pneumatic drive, etc. When the power supply unit 320 is driven by hydraulic drive, pneumatic drive, or other power transmission media with a certain mass, to avoid changes in the mass of the transmission medium affecting the weighing result of the compact 510, the power supply to the power supply unit 320 needs to be cut off during weighing. The locking member 340 then locks the power path 330 connected to the clamping member 310, so that the clamping member 310 can maintain its current clamping state even when the power is cut off. Meanwhile, the locking principle of the locking component 340 should also be adapted to the change of power mode. For example, when the power mode is pneumatic, the locking component 340 can be a shut-off valve that can be opened by pressure. When the power mode is hydraulic, the locking component 340 can be a hydraulic quick docking assembly. When the power mode is electric, the locking component 340 can be an electrical contact docking assembly. This disclosure does not impose any specific restrictions on this.

[0033] Furthermore, when the power supply unit 320 is electrically driven, the clamping member 310 can be an electric gripper. When the power supply unit 320 cuts off the power output, the state of the clamping member 310 can be maintained by a motor with a braking function inside the electric gripper. At this time, the brake system of the motor is the locking member 340.

[0034] When the first base 100 is connected to an external moving device, the power distribution module can control the power supply unit 320 to distribute power to the clamping member 310 in the clamping unit according to the action requirements. This allows the clamping member 310 to pick up the blank 510 according to the actual action requirements. The power distribution module can continuously adjust the clamping member 310 during the picking of the blank 510 to ensure that the blank 510 is not damaged and that the clamping is stable and reliable. It should be noted that the power supply unit 320 can be a power source that provides power or a structural element that is connected to an external power source and can transmit or distribute power. The power supply unit 320 is controlled by an electrical signal and can be connected to the power distribution module in the controller 130. When the power supply unit 320 is used as a structural element for power transmission or distribution, it can be integrated with the power distribution module in the controller 130. In this case, the power supply unit 320 can be considered as the power distribution module, and the power distribution module and the calculation module in the controller 130 are set separately.

[0035] For example, such as Figure 1 As shown, the power supply unit 320 can be installed on the first base 100, and the power passage 330 can include a first path 331 connected to the power supply unit 320 and a second path 332 connected to the clamping member 310. The first path 331 and the second path 332 can be mechanically locked or disengaged, and the locking member 340 can be provided on the second path 332.

[0036] In the above embodiment, the power supply unit 320 can be powered off by physically switching on and off the power passage 330. This prevents the connecting pipe of the power passage 330 from providing a small lifting force during the clamping process of the compact 510, which would affect the weight measurement result of the compact 510 and further improve the accuracy and precision of the obtained weight information. The first path 331 and the second path 332 are mechanically connected, allowing them to disengage when power is cut off and lock together when power output is required. The airtightness of the power passage 330 is guaranteed when they are locked together.

[0037] It should be noted that when the first path 331 and the second path 332 are mechanically locked, the power path 330 is also opened. When the lock is disengaged, the power is cut off. Figure 1 The diagram only illustrates the disengaged state of the first channel 331 and the second channel 332 and does not represent the actual structure. For example, when both the first channel 331 and the second channel 332 are air guide tubes, the docking position of the two can be equipped with structures such as claws, suction cups, or tube clamps described below, so that the two can be selectively locked or disengaged. Of course, the specific structure of the aforementioned mechanical locking or disengagement in the embodiments of this disclosure is not limited, and it can be adapted to the form of the power supply unit 320.

[0038] Accordingly, the material handling method may include: before the processing machine 500 picks up the blank 510, connecting the power passage 330, and then picking up the target product blank 510, at which time the first path 331 and the second path 332 are mechanically locked. During the movement of the material handling device, the power passage 330 can be disconnected to disengage the first path 331 and the second path 332, but at the same time the locking member 340 is activated, and the weight is obtained by the weighing unit 400.

[0039] According to some embodiments, such as Figure 1 As shown, there can be multiple clamping members 310, and these clamping members 310 can be evenly spaced below the second base 200 to simultaneously pick up multiple blanks 510 from the processing table 500, and transfer and weigh multiple blanks 510 in the same batch, further improving material handling and weighing efficiency. In this case, the material handling method may include: in step S101, picking up multiple blanks 510; in step S102, obtaining a weight after each blank 510 is released, and calculating the weight of the released blank 510 based on the difference between two adjacent weights.

[0040] Figure 3 An example is shown compared to Figure 2 A more detailed method flow, the material handling method may include: step S201, moving the material handling device above the processing table 500; step S202, connecting the power path 330 and picking up the target product blank 510; step S203, activating the locking member 340 and disconnecting the power path 330, maintaining the clamping action of the clamping member 310; step S204, moving the material handling device until the blank 510 leaves the processing table 500, and the weighing unit 400 obtains the weight information at this time; step S205, connecting the power path 330 and closing the locking member 340, obtaining weight information once after each blank 510 is released; and step S206, disconnecting the power path 330 after releasing all blanks 510. The connection of the power path 330 should be maintained before the action of the clamping member 310, and if it is necessary to maintain the clamping action of the clamping member 310, the activation operation of the locking member 340 should be performed before the action of the clamping member 310. When the locking element 340 is in the activated state and the clamping element 310 needs to be operated, the power passage 330 should be connected first and the same power supply should be restored before the locking element 340 is closed to avoid the instantaneous power change causing the pressed blank in the clamping element 310 to fall off and cause loss.

[0041] Step S201 of the material handling method may further include: starting the material handling device and preheating the weighing unit 400; moving the material handling device above the processing machine 500 and waiting for the processing machine 500 to produce the product blank 510; and resetting the weighing count of the weighing unit 400 to zero when the material handling device stops its slight shaking and comes to a stop. Specifically, before picking up and weighing the blank 510, the material handling device can be started to preheat the weighing unit 400. While waiting for the processing machine 500 to produce the blank 510, the previous weighing count or other minor errors in the weighing unit 400 are reset to zero when the material handling device stops its slight shaking and comes to a stop, to ensure the accuracy and precision of the current weighing result.

[0042] In some embodiments, such as Figure 1 As shown, the first base 100 may include a first mounting plate 110, the power supply unit 320 may be mounted on the top surface of the first mounting plate 110, and the first path 331 may extend from the power supply unit 320 to penetrate the first mounting plate 110 downwards to form the opening and closing point of the power passage 330 below the first mounting plate 110, so as to facilitate mechanical locking or disengagement with the second path 332.

[0043] For example, such as Figure 1 As shown, the first base 100 may further include a connecting block 120 disposed on the top surface of the first mounting plate 110 for connecting to an external driving device. The connecting block 120, as the only structure communicating with the outside world, can drive the entire material handling device to translate along plane P under the drive of the external driving device. This process should maintain a uniform and stable movement to avoid significant shaking of the entire device, which would affect the weight measurement of the pressed blank 510.

[0044] According to some embodiments, the second base 200 may include a second mounting plate 210, a support ring 220, and a support rod 230. For example... Figure 1 As shown, the clamping member 310 can be installed on the bottom surface of the second mounting plate 210. Support rings 220 can be spaced apart above the second mounting plate 210. The support rings 220 and the second mounting plate 210 are connected by a support rod 230. A locking member 340 can be installed on the support rings 220. A second path 332 extends from the clamping member 310 and sequentially penetrates the second mounting plate 210 and the support rings 220, forming a connection point opposite to the first path 331. Simultaneously, the weighing unit 400 can be connected between the first mounting plate 110 and the second mounting plate 210. In this embodiment, the second mounting plate 210, the support rings 220, and the support rods 230 enclose a space for accommodating the weighing unit 400, improving space utilization without affecting the weighing function.

[0045] In the above embodiment, the support ring 220 is spaced apart from the second mounting plate 210 by the support rod 230, which can fix and support the second path 332, and make the opening and closing points of the second path 332 correspond to the opening and closing points of the first path 331. The weighing unit 400 is connected between the first mounting plate 110 and the second mounting plate 210. When the first path 331 is mechanically disengaged from the second path 332, the second base 200 and the clamping unit mounted on the second base 200 can only be connected to the first mounting plate 110 through the weighing unit 400. At this time, the weight change measured by the weighing unit 400 is the weight change of the pressed blank 510 in the material handling device. The weighing result of the pressed blank 510 is not affected by the external driving force, which can effectively ensure the accuracy and precision of the weighing result.

[0046] For example, such as Figure 1 As shown, the first base 100 and the second base 200 can be configured to move relative to each other in the height direction, so that the first path 331 and the second path 332 can be locked or disengaged. In this embodiment, the first base 100 can be displaced in height relative to the second base 200. When the first base 100 is close to the second base 200, the first path 331 can dock and lock with the second path 332. When the first base 100 is away from the second base 200, the first path 331 can disengage from the second path 332, thereby realizing the power supply unit 320 on / off switching. Furthermore, the weighing unit 400 can be a weight measuring element with a telescopic function to meet the conditions of relative displacement between the first base 100 and the second base 200. For example, the weighing unit 400 can be a weight measuring instrument using a socket type, whose relatively sliding upper and lower shells can be connected to the first base 100 and the second base 200 respectively, and adaptably deform when the first base 100 and the second base 200 undergo relative displacement to ensure the power supply and disconnection of the power passage 330. At the same time, when such a weight measuring instrument is used as the weighing unit 400, the adaptive deformation between its shells does not affect the reading of its internal gravity sensor, and the change in the reading of its internal gravity sensor is only determined by the weight change of the clamped blank 510. In this case, to improve the accuracy of the measurement, the relative movement of the first path 331 and the second path 332 in the height direction can be kept constant each time.

[0047] In some embodiments, the first base 100 and the second base 200 may not move relative to each other in height. For example, the locking or disengagement between the first path 331 and the second path 332 can be achieved by a radial clamp (not shown in the figure) connected at the point of connection or disconnection. When it is necessary to connect the power path 330, the radial clamp is locked to tightly connect the first path 331 and the second path 332. When it is necessary to disconnect the power path 330, the radial clamp can be opened in the opposite direction to disengage them. During this process, the first path 331 and the second path 332 remain relatively stationary, the first base 100 and the second base 200 do not need to be displaced relative to each other, and the weighing unit 400 can also be a conventional weight measuring instrument that does not require a multi-section housing, making docking convenient and operation simple.

[0048] This section uses the example of a material handling device picking up multiple pressed blanks 510 to illustrate the weight calculation method. In this embodiment, the total weight of all pressed blanks 510 weighed by the weighing unit 400 can be denoted as M, and the weight of the remaining product pressed blanks 510 in the current material handling device can be denoted as... When only one compact 510 is released, the marked weight reading is... When the two pressed blanks 510 are released, the marked weight reading is: And so on, when the nth pressed blank 510 is the last one released, the marked weight reading... Infinitely close to zero. If we name the first released compact 510... ,but =M- If the second released compact 510 is named ,but - And so on, if the nth released compact 510 is named ,but = - Therefore, the weight information of each pressed blank 510 picked up by the clamped part 310 in the same batch can be calculated sequentially.

[0049] It should be noted that the present embodiment does not impose specific limitations on the calculation method for the weight of each of the above-mentioned blanks 510. Given the total weight M of the blanks 510 being gripped and the remaining total weight in the current material handling device after releasing any blank 510, the calculation method is as follows: Under the premise that the mass of each pressed blank can be obtained through different calculation methods, the above embodiment is only an example of a relatively simple and feasible calculation method, and is not restrictive. The calculation method for each pressed blank 510 can be adaptively adjusted according to the actual weight information to be obtained, which will not be elaborated here.

[0050] According to some embodiments, refer to Figure 4The material handling method may include: when the error between the weight of any pressed blank 510 and the standard value exceeds a preset value, transmitting an error signal to the processing machine 500. In this embodiment, if the ideal weight of the produced pressed blank 510 is set as the standard value m, and slight errors are allowed within a certain preset value range, the above method may further include: step S301, calculating the weight of a single pressed blank 510; step S302, comparing the weight of a single pressed blank 510 with the standard value m, and determining whether the error exceeds the preset value; if the result is no, then repeating step S301 for the next pressed blank 510 to obtain the total mass of all pressed blanks 510; if the result is yes, then executing step S303: transmitting the error signal to the processing machine 500 and exiting the current loop. The processing machine 500 can mark the mold number that produced the blank 510 based on the error information obtained by the self-weighing unit 400 and report the error to the operator so as to facilitate the maintenance and adjustment of the mold, correct the error to the allowable range in a timely manner, and ensure the product quality of the blank 510 subsequently produced by the mold.

[0051] Another aspect of this disclosure provides a material handling system, including a material handling device as described above, for gripping a blank 510 from a processing machine 500, a stacking table 600, and a driving device. The stacking table 600 can receive blanks 510 in an orderly manner according to their numbers, providing a transfer platform for subsequent processing of the blanks 510. The driving device can drive the material handling device to reciprocate between the processing machine 500 and the stacking table 600 in a plane P, and can also move in the vertical direction, thereby picking up or releasing the blank 510 when it reaches the processing machine 500 and the stacking table 600.

[0052] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0053] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0054] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A material handling device, characterized in that, include: The first base is used to connect to an external drive unit and be driven. The second base is located below the first base; The clamping unit includes a clamping member connected to the lower part of the second base for picking up the blank from the processing table; as well as A weighing unit, connected between the first base and the second base, is used to obtain the weight of the clamped compact. The clamping unit further includes a power supply unit for providing power to the clamping member, and a power passage connecting the power supply unit and the clamping member. The power path is equipped with a locking element to maintain the current clamping state of the clamping element when the power supply is cut off. The power supply unit is installed on the first base. The power passage includes a first path connected to the power supply unit and a second path connected to the clamping member. The first path and the second path are configured to be mechanically locked or disengaged. The locking member is provided on the second path. The power supply unit is cut off by the physical opening and closing of the power passage.

2. The material handling device according to claim 1, characterized in that, The first base and the second base are configured to move relative to each other in the height direction to lock or disengage the first path and the second path.

3. The material handling device according to claim 1, characterized in that, The first base includes a first mounting plate, the power supply unit is mounted on the top surface of the first mounting plate, and the first path extends from the power supply unit downward through the first mounting plate.

4. The material handling device according to claim 3, characterized in that, The first base also includes a connecting block disposed on the top surface of the first mounting plate for connecting an external driving device.

5. The material handling device according to claim 3, characterized in that, The second base includes: A second mounting plate, wherein the clamping member is mounted on the bottom surface of the second mounting plate; A support ring, spaced apart above the second mounting plate, and the locking member is mounted on the support ring; and The support rod connects the second mounting plate and the support ring. The second path extends from the clamping member and sequentially penetrates the second mounting plate and the support ring. Furthermore, the weighing unit is connected between the first mounting plate and the second mounting plate.

6. The material handling device according to claim 1, characterized in that, The number of clamping members is multiple, and the multiple clamping members are evenly spaced on the second base.

7. A material handling system, characterized in that, include: A material handling device for picking up a pressed blank from a processing machine, wherein the material handling device is the material handling device according to any one of claims 1-6; A material stacking station is used to receive the pressed blanks; as well as A driving device is used to drive the material handling device to move between the processing table and the stacking table.

8. A method for obtaining materials, characterized in that, The method using the material handling system of claim 7 includes: Pick up the blank from the processing machine; and The weight of the pressed blank is obtained during the movement of the material handling device.

9. The material handling method according to claim 8, characterized in that, The step of picking up the blanks from the processing machine includes: picking up multiple blanks; The step of obtaining the weight of the pressed blank includes: obtaining the weight once after each pressed blank is released, and calculating the weight of the released pressed blank based on the difference between two adjacent weights.

10. The material handling method according to claim 8 or 9, characterized in that, The method includes: When the error between the weight of any pressed blank and the standard value exceeds a preset value, an error signal is transmitted to the processing machine.

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