Method and apparatus for handling a cleaning material box

Abstract

The present application provides a kind of carrying method and device for cleaning material box, for planning a disposable carrying path of carrying material box by a handle, including carrying material box from a loading port to an unlocking station, to unlock material box into a shell seat and a door piece, and simultaneously carrying shell seat and door piece to multiple cleaning stations to successively receive cleaning public procedures, and then simultaneously carrying cleaned shell seat and door piece to the unlocking station to lock into the material box, to simplify the carrying path, and reduce carrying working hours.

Description

Technical Field

[0001] This invention relates to a material box handling technology, and more particularly to a method and apparatus for handling clean material boxes. Background Technology

[0002] A front-opening unified pod (FOP) consists of a shell that latches onto a door. In semiconductor manufacturing, FOPs are commonly used to house wafers and fill them with special gases. They are then transported to various workstations by overhead cranes (OHTs) for semiconductor wafer processing. In addition, FOPs are increasingly being used to house substrates, panels, or other precision components, facilitating their transport by OHT to different processing stations for necessary processing.

[0003] In semiconductor manufacturing processes, the basic structure and specifications of the material cartridge have been standardized. For further details, please refer to... Figure 1 The material box 10 is shown to have its housing 11 and door 12 latched together as a single unit. The housing 11 is roughly a hollow quadrilateral with an opening 13 for the door 12 latch to cover the opening 13. A flange 15 (commonly known as a mushroom head) is formed on one end wall of the housing 11 for external equipment (such as an overhead crane) to clamp and move the material box. It is known that the flange 15 has the strength to withstand clamping and moving forces.

[0004] Furthermore, the surface of the door panel 12 is provided with a pair of keyholes 14, which allow a matching key to be inserted to unlock the door panel 12 on the housing 11, so as to open the opening 13 of the housing 11 and thereby accommodate the aforementioned process components, or to remove the process components from the housing 11. It should be noted that when the housing 11 and the door panel 12 are locked together, the door panel 12 (including the keyholes 14) and the flange 15 are respectively located on different end walls of the housing 11; more specifically, the door panel 12 (including the keyholes 14) and the flange 15 are respectively located on different end walls of the housing 11 that are adjacent to each other at approximately a 90-degree angle.

[0005] The aforementioned material boxes must be cleaned after a period of use to remove harmful substances accumulated or remaining on the housing and door panels. These harmful substances include particulate matter, volatile organic compounds (VOCs), sulfur dioxide (SO2), ammonia, acids, and NH3, etc., to maintain the production yield of the process components during the manufacturing process. Therefore, most processing stations that transport process components using material boxes have a dedicated cleaning station to maintain the cleanliness of the material boxes.

[0006] The cleaning station typically has at least one load port for receiving and transporting material boxes brought in by an overhead crane. Specifically, the overhead crane moves the material boxes to be cleaned to the load port. The cleaning station is equipped with an automated machine, usually a multi-axis robotic arm, which is attached with a handle (or jig, such as...). Figure 1 The handle 16 is used to automatically pick up, transport and place each material box 10 to be cleaned to perform the cleaning process in the station, and transport the cleaned material box 10 to the loading port so that the overhead crane can pick it up and retrieve it.

[0007] Before a material box can be cleaned, the door panel 12 on the housing 11 must be unlocked, allowing both the housing 11 and the door panel 12 to be cleaned independently. In existing material box cleaning technologies, an unlocking station is established within the cleaning zone. After the automatic machine's handle 16 picks up the material box to be cleaned from the loading port, it first transfers the material box to the unlocking station, which is equipped with a key for unlocking the door panel 12 on the housing 11. Once unlocked, the door panel 12 remains at the unlocking station, and the housing 11 remains on the handle 16. The automatic machine first transports the housing 11 to a cleaning chamber within the cleaning zone, and then returns to the unlocking station to retrieve the door panel 12 and transport it to the cleaning chamber for cleaning. The housing 11 and the door panel 12 can be cleaned in the same or different cleaning chambers.

[0008] However, in the prior art, once the material box is unlocked, the handle 16 must repeatedly carry the material box's housing 11 and door 12 into and out of the cleaning chamber, which increases the handling time and reduces the operating efficiency of the cleaning station.

[0009] To address the aforementioned issues, the more advanced patent CN102804332B provides a technique for reducing the operating time of the handle 16 in the cleaning station when handling material boxes. Furthermore, this patent discloses a handle 16 driven by a multi-axis robotic arm, with a pair of grippers 162 disposed on one end face 161, and an unlocking mechanism 163 also disposed on the end face 161, which includes the key for opening the aforementioned door panel 12.

[0010] Accordingly, the multi-axis robotic arm can drive Figure 1 The handle 16 is rotated 180 degrees so that the pair of jaws 162 on the end face 161 clamp the two opposite end edges A and B around the housing 11 (as shown). Figure 1As shown), it is used to transport the entire material box 10. During the transport process, or before the grippers 162 release the entire material box 10, the unlocking mechanism 163 on the end face 161 can be inserted into the keyhole 14 of the door piece 12 to unlock the door piece 12 on the housing 11. At the same time, the pair of grippers 162 on the end face 161 can also hold the unlocked door piece 12, thereby transporting and placing the housing 11 and the door piece 12 to the predetermined cleaning position. In other words, this patent can eliminate the need to set up an unlocking station in the cleaning area by using only the single handle 16, and overcome the time-consuming problem caused by the handle 16 repeatedly carrying the housing 11 and the door piece 12 in and out of the cleaning chamber.

[0011] However, since the unlocking mechanism 163 disclosed in the aforementioned patent is disposed on the handle 16, during the unlocking process of the door panel 12, the end face 161 of the handle 16 must be in a manner that covers the door panel 12 in order to use the pair of grippers 162 to clamp the two opposite end edges A and B around the housing 11 (e.g., ...). Figure 1 As shown), the purpose of the end face 161 of the handle covering the door panel 12 is to allow the key of the unlocking mechanism 163 to be inserted into the keyhole 14 on the door panel 12 nearby.

[0012] However, the weight of the housing 11 is much heavier than that of the door panel 12, and after the housing 11 locks the door panel 12, the weight of the entire material box 10 is much heavier than that of the door panel 12. Furthermore, the edges A and B around the housing 11 are not provided for clamping external equipment as specified in the standard material box 10 specifications. In other words, this patent does not follow the standard material box 10 specifications to clamp the flange 15 on one side of the housing 11. This patent is prone to deformation and damage of the housing 11, which reduces the durability and service life of the material box 10. Therefore, it urgently needs to be improved. Summary of the Invention

[0013] The purpose of this invention is to provide a method and apparatus for handling a clean material box. The technical problem to be overcome is that, since the weight of the entire material box and its unlocked and separated housing is relatively heavier than the door panel, during the handling and unlocking of the material box for cleaning, it is necessary to avoid gripping and handling parts of the entire material box and its unlocked and separated housing that are not subject to external force contact. Since the weight of the door panel is relatively lighter than the entire material box and housing, and there is no flange on the door panel, it is permissible to grip the edges of the door panel when using a gripper to hold the unlocked door panel.

[0014] Furthermore, the present invention aims to provide a method and apparatus for handling a clean material box, and the technical challenges to be overcome include simplifying the handling path of the material box and its unlocked and separated housing and door panels to improve handling efficiency.

[0015] Therefore, the purpose of this invention is to provide a method and apparatus for handling a clean material box, which utilizes an independent unlocking station within the clean zone and follows the flange on the material box's predetermined structure that can be clamped by an overhead crane as the object to be gripped by the handle, so as to avoid deformation or damage to the material box.

[0016] This invention provides a method for transporting a material box for cleaning. Before cleaning, the material box includes a housing and a door latch locked to the housing. The weight of the material box and the housing is relatively heavier than that of the door latch. The method includes constructing a one-time transport path for transporting and disassembling the material box by means of a handle between a loading port, an unlocking station, and a cleaning station. The handle is provided with a first gripper and a second gripper on its two ends. The one-time transport path of the handle includes, in sequence: (1) using the first gripper to grip the housing from the loading port to transport the material box to be cleaned to the unlocking station to unlock the door latch on the housing, and lifting the housing while leaving the unlocked door latch at the unlocking station; (2) using the second gripper to grip the unlocked door latch from the unlocking station. (3) The door panel is locked, and the housing and the door panel are simultaneously transported to the cleaning station for placement; (4) The housing is clamped from the cleaning station by the first clamp and the door panel is clamped from the cleaning station by the second clamp, and the housing and the door panel are simultaneously transported to the unlocking station to lock into the cleaned material box; and (5) The housing is clamped from the unlocking station by the first clamp for transporting the cleaned material box to the loading port for placement; wherein, a flange is formed on one side of the housing, and the first clamp is provided by the flange when the handle is transporting the material box and the housing; when the handle is transporting the door panel, the second clamp is used to clamp the door panel; the handle is rotated back and forth at an angle so that the first clamp can clamp the flange and the second clamp can clamp the door panel.

[0017] In a further implementation, the working angle is 180 degrees; moreover, the two end faces of the handle are parallel and corresponding to each other. Furthermore, the two side edges of the door panel are provided for clamping by the second gripper.

[0018] The present invention also provides a material box handling device for handling the material box for cleaning. Before cleaning, the material box includes a housing and a door panel locked to the housing. The weight of the material box and the housing is relatively heavier than that of the door panel. The handling device includes: an automatic tool, a first gripper, and a second gripper. The automatic tool is connected to a handle and is located in a cleaning station. At least one loading port, at least one unlocking station, and multiple cleaning stations are respectively arranged around the automatic tool in the cleaning station. The first gripper is disposed on one end face of the handle and is used to grip and release a flange on the housing in the loading port, the unlocking station, and the cleaning station. The second gripper is disposed on the other end face of the handle and is used to grip and release the door panel in the loading port, the unlocking station, and the cleaning station. The handle is rotated at an angle to allow the first gripper to grip the flange and the second gripper to grip the door panel.

[0019] In a further embodiment, the angle is 180 degrees; furthermore, the two end faces of the handle are parallel to each other. Also, the two side edges of the door panel are provided for gripping by the second clamp.

[0020] The key technical point and effectiveness of this invention are as follows: by repeatedly rotating the handle 180 degrees, the handle can simultaneously grip the door panel, the housing, or the entire material box within the loading port, the unlocking station, and the cleaning station without changing the exit path, thereby simplifying the handling path and reducing handling time; moreover, the position of the handle gripping the flange fully conforms to the standard specifications of the material box, preventing the material box from deforming or being damaged under durable use.

[0021] The implementation details and technical effects disclosed above will be presented in detail in the accompanying drawings and implementation methods described below. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of an existing material box and a handle, revealing that the material box is formed by a locking door on a housing, and the position of the housing where the handle holds the material box.

[0023] Figure 2 This is a top view of the configuration of a cleaning area station in which the present invention is implemented, revealing that the cleaning area station is equipped with a hand-held device and multiple cleaning stations.

[0024] Figure 3 yes Figure 2 The three-dimensional schematic diagram of the first angle of the handle shows that one end face of the handle is provided with a clamp that can hold the flange on the housing.

[0025] Figure 4 yes Figure 2 The three-dimensional schematic diagram of the second angle of the handle shows that the other end face of the handle is provided with a clamp that can hold the opposite end edge of the door panel.

[0026] Figure 5 yes Figure 3 and Figure 4 The three-dimensional schematic diagram shown illustrates that the handle can be rotated 180 degrees to grip and place the housing and door panel on different end faces.

[0027] Figure 6 This is a transport path diagram of the present invention, which discloses... Figure 2 The diagram shows the handling steps and procedures for the hand-operated equipment within the clean zone station.

[0028] Figure 7 yes Figure 6 The accompanying explanatory diagram illustrates the process of taking the hand. Figure 7 The state of continuous actions from step (a) to step (i).

[0029] Explanation of reference numerals in the attached drawings: 10-Material box; 11-Shell; 12-Door panel; 121, 122-End edge; 14-Keyhole; 15-Flange; 16-Handle; 161-End face; 162-Gripper; 163-Unlocking mechanism; A, B-End edge; 20-Clean area station; 21-Loading port; 211-Key; 22-Unlocking station; 23-Clean station; 231-Washing machine; 231a-Shell cleaning chamber; 231b-Door panel cleaning chamber; 232-Vacuum dryer; 30-Automatic tool; 40-Handle; 41, 42-End face; 43-Connecting seat; 44-First gripper; 45-Second gripper; 441, 451-Driver; S10~S60-Procedure description. Detailed Implementation

[0030] Please refer to the following first. Figure 2 As shown, the material box handling method and apparatus of the present invention are implemented in a cleaning station 20. An automatic machine 30 is configured in the cleaning station 20. The automatic machine 30 may be composed of a multi-axis robotic arm and is equipped with a handle 40 (or jig).

[0031] The automated machine 30 within the cleaning station 20 is surrounded by at least one load port 21, at least one unlocking station 22, and multiple cleaning stations 23. This allows the automated machine 30 to use a multi-axis drive to move the handle 40 to the load port 21 to grip and place the material box 10, and then transport the material box 10 to the unlocking station 22 to unlock it. Figure 5 The housing 11 and door panel 12 shown are then simultaneously transported to multiple cleaning stations 23 for cleaning.

[0032] Furthermore, the loading port 21 is used to connect and allow the material box 10, transported by a vehicle (not shown), to enter and exit the cleaning area station 20. The unlocking station 22 is used to unlock the door 12 (e.g., on the housing 11 of the material box 10) on the housing 11. Figure 1 Furthermore, the unlocking station 22 can also lock the door panel 12 and the housing 11 together to form the material box 10 after the door panel 12 is placed. Multiple cleaning stations 23 may comprise at least one washing machine 231 and at least one vacuum dryer 232. Wherein:

[0033] Each of the aforementioned cleaning machines 231 is used to accommodate the unlocked housing 11 and door panel 12, or the unlocked housing 11 and door panel 12 can be respectively accommodated in different cleaning machines 231 for washing the housing 11 and door panel 12. In known practices, the cleaning machine 231 also serves to remove water from the washed housing 11 and door panel 12; or, at least one dewatering machine (not shown) is configured between the cleaning machine 231 and the vacuum dryer 232 to pre-dewater the washed housing 11 and door panel 12 to shorten the subsequent drying time.

[0034] Each of the vacuum dryers 232 is used to house the housing 11 and door panel 12 after washing or dehydration, or to house the housing 11 and door panel 12 after washing or dehydration in different vacuum dryers 232, in order to dry the water molecules on the surface of the housing 11 and door panel 12 after washing.

[0035] Please refer to both together. Figure 3 and Figure 4 As shown; where, Figure 3 Exposure Figure 2 The solid form of the first angle of the handle 40 shown illustrates that the handle 40 can be formed as a frame shape with two end faces 41 and 42. The two end faces 41 and 42 can be implemented as corresponding parallel shapes. One side of the handle 40 has a connecting seat 43 for locking the automatic tool 30. One end face 41 of the handle 40 is provided with a first clamp 44 capable of clamping the flange 15 on the housing 11. Furthermore... Figure 4 The other end face 42 of the handle 40 is provided with a second clamp 45 that can clamp the opposite end edge of the door panel 12. The first clamp 44 and the second clamp 45 are respectively driven by a driver 441 and 451 to have the ability to expand and contract the clamping jaws.

[0036] For example Figure 5 As shown, the first gripper 44 and the second gripper 45, which expose the double end faces 41 and 42 of the handle 40, can perform a 180-degree flipping action via the handle 40 to clamp the flange 15 on the housing 11 and the opposite end edges 121 and 122 of the door piece 12, respectively.

[0037] Please refer to the combined documents further. Figure 6 and Figure 7 ;in, Figure 6 The retrieval arm 40 is revealed to be capable of performing a single-pass transport path within the clean zone station 20. Figure 3 The one-time transport path is represented by an arrow segment, and the one-time transport path includes the following steps S10 to S60; Figure 7 The auxiliary explanation describes the actions performed by the hand 40 during steps S10 to S60.

[0038] Furthermore, in steps S10 to S30 described later, please refer to... Figure 7 Step (a) to Figure 7 The step (i) is shown, where the action of taking the hand 40 is indicated by a solid dashed arrow and the sequence of (a) to (i) is indicated by a hollow dashed arrow.

[0039] Step S10: Pick up the material box to be cleaned and unlock the door panel on the housing.

[0040] In this step, the automatic tool 30 drives the handle 40 to the loading port 21 to pick up the material box 10 to be cleaned. At this time, the housing 11 of the material box 10 has not yet unlocked the door 12, and the handle 40 picks up the material box 10 at the flange 15 located on the housing 11, so as to move the entire material box 10 to the unlocking station 22 to unlock the door 12 on the housing 11.

[0041] Furthermore, such as Figure 7 As shown in step (a), the handle 40 moves to the loading port 21 and clamps the flange 15 on the housing 11 using the first gripper 44. (Continued...) Figure 7 As shown in step (b), the handle 40 lifts the housing 11 away from the loading port 21 using the first gripper 44; wherein the housing 11 and the door panel 12 on the housing 11 are both lifted away from the loading port 21 together. Continuing... Figure 7 As shown in step (c), the handle 40 is subsequently moved to the unlocking station 22 by the drive of the multi-axial automatic tool 30, so that the door piece 12 faces downward and is placed on the platform of the unlocking station 22. It is known that the platform of the unlocking station 22 is provided with a key 211 for the unlocking mechanism. Therefore, with the downward movement of the door piece 12, the key 21 is inserted into the keyhole of the door piece, thereby unlocking the door piece 12.

[0042] Step S20: Flip the housing and clamp the door piece.

[0043] In this step, the handle 40 lifts the housing 11 of the unlocked door panel 12 away from the platform of the unlocking station 22 and performs a 180-degree flipping action, so that the second gripper 45 of the handle 40 can grip the opposite ends 121 and 122 of the door panel 12.

[0044] Furthermore, such as Figure 7 As shown in step (d), the handle 40 lifts the housing 11 of the unlocked door panel 12 off the platform of the unlocking station 22, leaving the door panel 12 on the platform of the unlocking station 22, thus separating the housing 11 and the door panel 12. Continued... Figure 7 As shown in step (e), following the action of lifting the housing 11 away from the unlocking station 22 platform, the handle 40 then rotates the clamped housing 11 by 180 degrees, so that the second gripper 45 on the handle 40 faces downward and aligns with the door piece 12 on the unlocking station 22. Then the handle 40 is moved down, and the second gripper 45 clamps the opposite ends 121 and 122 of the door piece 12, so that the two end faces of the handle 40 can respectively clamp the housing 11 and the door piece 12.

[0045] Step S30: Move the housing and door panel to the cleaning station for placement.

[0046] In this step, using the handle 40 that already holds the housing 11 and the door panel 12, the housing 11 and the door panel 12 are moved away from the unlocking station 22 and then to the cleaning station 23 where the housing 11 and the door panel 12 are placed. (The rest of the text is missing.) Figure 2 As shown, the multiple cleaning stations 23 include a cleaning machine 231 and a vacuum dryer 232. Therefore, the handle 40 can first place the housing 11 and the door panel 12 in the same or different cleaning machines 231. After cleaning is completed, the handle 40 can then pick up the housing 11 and the door panel 12 in the cleaning machine 231 and move them to another vacuum dryer 232 for placement. This process is repeated so that the handle 40 can place and pick up the housing 11 and the door panel 12 successively among the multiple cleaning stations 23, so that the housing 11 and the door panel 12 complete the predetermined cleaning process.

[0047] Furthermore, such as Figure 7 As shown in step (f), the handle 40 carries the housing 11 and door panel 12 away from the unlocking station 22 and transports the housing 11 and door panel 12 to the cleaning machine 231 in one of the plurality of cleaning stations 23 [e.g., Figure 7 As shown in step (g), taking a housing cleaning chamber 231 and a door panel cleaning chamber 231b as an example, the handle 40 can first place the housing 11 in the housing cleaning chamber 231a [e.g., Figure 7 [As shown in step (g)], the door panel 12 is then placed in the door panel cleaning chamber 231b [as shown in step (g)]. Figure 7[As shown in step (h)], the housing 11 and the door panel 12 are accommodated within the cleaning machine 231 for cleaning [e.g.] Figure 7 Step (i) is shown.

[0048] Furthermore, in steps S40 to S60 described later, please refer to the reverse process. Figure 7 Step (i) to Figure 7 Step (a), wherein the action of taking the hand 40 is indicated by a solid arrow with a solid line and by a hollow arrow with a solid line. Figure 7 Step (i) to Figure 7 The order of steps (a).

[0049] Step S40: Move the cleaned housing and door panel to the unlocking station.

[0050] In this step, the handle 40 simultaneously picks up the housing 11 and door piece 12 that have completed the cleaning process and removes them from the cleaning station 23, and simultaneously transports the housing 11 and door piece 12 to the unlocking station 22 for placement.

[0051] Further, please proceed in order from Figure 7 Step (i) reply to refer to Figure 7 Step (f) describes the housing 11 and door panel 12 that have been cleaned within the cleaning machine 231 [e.g.] Figure 7 As shown in step (i), the handle 40 can be grasped one by one and gradually leave the housing cleaning chamber 231a and the door panel cleaning chamber 231b [as shown in step (i)]. Figure 7 Step (h) to Figure 7 As shown in step (g), the handle 40 then moves the housing 11 and the door panel 12 to the unlocking station 22 [as shown in step (g)]. Figure 7 As shown in step (f), the door piece 12 is placed on the platform of the unlocking station 22.

[0052] Step S50: Flip the housing and lock the material box.

[0053] In this step, the door piece 12 is held in place by the unlocking station 22, and the handle 40 drives the housing 11 to move upward, rotate 180 degrees, and then move downward to lock the door piece 12, thereby completing the assembly of the material box 10.

[0054] Furthermore, once the door panel 12 is placed on the platform of the unlocking station 22, the key 211 on the unlocking station 22 can be inserted into the keyhole of the door panel 12, so that the door panel 12 can remain on the platform of the unlocking station 22 as the handle 40 moves the housing 11 upward, and the handle 40, which is still holding the housing 11, rotates 180 degrees during the upward movement [e.g.]. Figure 7As shown in step (e), the opening of the housing 11 is oriented downwards to correspond to the door piece 12 on the unlocking station 22 platform [as shown]. Figure 7 As shown in step (d), the handle 40 is driven to move the housing 11 down and lock the door piece 12 on the platform of the unlocking station 22, thereby enabling the housing 11 and the door piece 12 to be locked back into the material box 10.

[0055] Step S60: Move the material box to the loading port.

[0056] In this step, the handle 40 is used to grip the flange 15 of the housing 11 from the unlocking station, and then the material box 10 is moved to the loading port 21 for placement.

[0057] Furthermore, such as Figure 7 As shown in step (c), the handle 40 grips the flange 15 of the housing 11 from the unlocking station, thereby moving the cleaned and locked material box 10 away from the unlocking station 22. Continued as follows... Figure 7 As shown in step (b), the handle 40 then moves the cleaned and locked material box 10 to the loading port 21, and then releases the material box 10 after placing it in the loading port 21, thus completing the one-time transport path operation of the handle 40.

[0058] in, Figure 7 Step (g) to Figure 7 The cleaning machine 231 shown in step (i) is only one embodiment of the multiple cleaning stations 23; in other words, any changes such as the cleaning machine 231 having only a single cleaning chamber for cleaning the housing 11 or a multi-slot cleaning chamber for cleaning the door panel 12 are all simple replacements conceived in this invention.

[0059] Furthermore, the description of taking and placing the housing 11 and door 12 in the cleaning machine 231 above also applies to the description of placing and clamping the housing 11 and door 12 in the vacuum dryer 232, and is described therein.

[0060] Furthermore, as described above, since the handle 40 can clamp and move the housing 11 and the door panel 12 at once, the handle 40 only needs to perform a single back-and-forth movement between the unlocking station 22 and the cleaning station 23 to complete the work of picking up and placing the housing 11 and the door panel 12. In this way, when the handle 40 needs to move a heavier housing 11 or the entire material box 10, it can still maintain the clamping of the flange 15 on the housing 11 to meet the standard specifications of the material box 10, thereby maintaining the durability of the material box 10.

[0061] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A method for handling a material box, used to handle the material box for cleaning, characterized in that: Before cleaning, the material box includes a housing and a door latch locked to the housing. The weight of the material box and the housing is relatively heavier than that of the door latch. The handling method includes constructing a one-time handling path for handling and disassembling the material box between a loading port, an unlocking station, and a cleaning station. The handle has a first gripper and a second gripper on its two ends. The one-time handling path of the handle includes, in sequence: (1) Using the first clamp, the housing is clamped from the loading port to transport the material box to be cleaned to the unlocking station to unlock a door piece on the housing, and the housing is lifted while leaving the unlocked door piece at the unlocking station. (2) Using the second clamp, the unlocked door piece is picked up from the unlocking station and then the housing and the door piece are simultaneously moved to the cleaning station for placement. (3) Using the first clamp, the housing is gripped from the cleaning station, and using the second clamp, the door panel is gripped from the cleaning station, thereby simultaneously transporting the housing and the door panel to the unlocking station to lock them into the cleaned material box; and (4) The first clamp is used to grip the housing from the unlocking station to transport the cleaned material box to the loading port for placement; A flange is formed on one side of the housing. When the handle is moving the material box and the housing, the flange provides the first clamp for gripping. When the handle is moving the door panel, the second clamp grips the door panel. The handle is rotated back and forth at a working angle so that the first clamp can grip the flange and the second clamp can grip the door panel.

2. The method for handling material boxes as described in claim 1, characterized in that: The working angle is 180 degrees.

3. The method for handling material boxes as described in claim 1 or 2, characterized in that: The two ends of the handle are parallel and correspond to each other.

4. The method for handling material boxes as described in claim 1, characterized in that: The second clamp is provided on both sides of the door panel.

5. A material box handling device for handling the material box for cleaning, characterized in that: Before cleaning, the material box includes a housing and a door latch locked to the housing. The weight of the material box and the housing is relatively greater than that of the door latch. The conveying device includes: An automated machine, connected to a picker, is located in a cleaning zone station, and the automated machine in the cleaning zone station is surrounded by at least one loading port, at least one unlocking station, and multiple cleaning stations. A first gripper, disposed on one end face of the handle, is used to grip and release a flange on the housing in the loading port, the unlocking station and the cleaning station; A second gripper, disposed on the other end face of the handle, is used to grip and release the door panel in the loading port, the unlocking station and the cleaning station; The handle reciprocates at a working angle, enabling the first clamp to clamp and release the flange, and the second clamp to clamp and release the door panel.

6. The material box handling device as described in claim 5, characterized in that: The working angle is 180 degrees.

7. The material box conveying device as described in claim 5 or 6, characterized in that: The two ends of the handle are parallel and correspond to each other.

8. The material box handling device as described in claim 5, characterized in that: The second clamp is provided on both sides of the door panel.

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