Material storing and taking equipment

Abstract

The utility model provides material storing and taking equipment which comprises a storage bin and a picking mechanism. The supporting back plate is arranged on the frame; the positioning roller is arranged on the supporting back plate and used for being inserted into the first end of the winding drum; the picking mechanism comprises an expansion shaft assembly. The driving assembly is arranged in the storage bin and connected to the expansion shaft assembly, and the driving assembly is used for driving the expansion shaft assembly to move; when the expansion shaft assembly is in the retraction state, the expansion shaft assembly can be inserted into or pulled out of the second end of the winding drum. When the expansion shaft assembly is inserted into the second end of the winding drum and is in an expansion state, the expansion shaft assembly can drive the winding drum to move. The material storing and taking device can automatically store and take materials, material storing and taking are accelerated, and the machining efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of PCB material storage and retrieval, and particularly to a material storage and retrieval device. Background Technology

[0002] Currently, PCB manufacturing processes may involve various materials stored in rolls, such as CVL (Cover Layer) and copper foil used in RTR (Roll-to-Rol) processes. In related technologies, roll-type materials are usually directly stacked on boxes or shelves, making manual access difficult and affecting processing efficiency. Utility Model Content

[0003] In view of the above, it is necessary to provide a material storage and retrieval device that can accelerate material storage and retrieval and improve processing efficiency.

[0004] This application provides a material storage and retrieval device, which includes a storage bin and a pickup mechanism. The storage bin includes: a frame; a support back plate disposed on the frame; and a positioning roller disposed on the support back plate, the positioning roller being used to insert into the first end of a drum. The pickup mechanism includes: an expansion shaft assembly; and a drive assembly disposed within the storage bin and connected to the expansion shaft assembly, the drive assembly being used to drive the expansion shaft assembly to move. When the expansion shaft assembly is in a retracted state, it can be inserted into or withdrawn from the second end of the drum. When the expansion shaft assembly is inserted into the second end of the drum and is in an expanded state, it can drive the drum to move.

[0005] In some embodiments, the expansion shaft assembly includes a first expansion shaft and a second expansion shaft, both of which are connected to the drive assembly. The radius of the first expansion shaft in the expanded state is greater than the radius of the second expansion shaft in the expanded state.

[0006] In some embodiments, the drive assembly is a multi-axis manipulator, with an included angle between the first expansion shaft and the second expansion shaft, and both the first expansion shaft and the second expansion shaft are connected to the movable end of the multi-axis manipulator.

[0007] In some embodiments, the support back plate is arranged vertically, one end of the positioning roller is connected to the support back plate, and the other end of the positioning roller is inclined upward.

[0008] In some embodiments, the support back plate is provided with a first buffer pad, which is distributed around one end of the positioning roller; when the first end of the drum is inserted into the positioning roller, the first buffer pad can contact the first end of the drum.

[0009] In some embodiments, the positioning roller includes a first support portion and a second support portion, the first support portion being connected to a support back plate, the second support portion being disposed on the side of the first support portion away from the support back plate, and the radius of the first support portion being larger than the radius of the second support portion.

[0010] In some embodiments, a second buffer pad is provided on the side of the first support portion facing the second support portion, and the second buffer pad is distributed around one end of the second support portion; when the first end of the reel is inserted into the second support portion, the second buffer pad can contact the first end of the reel.

[0011] In some embodiments, the positioning roller is provided with a sensing component for detecting the roll inserted into the positioning roller.

[0012] In some embodiments, there are multiple support back plates distributed around the pickup mechanism, each support back plate is provided with multiple spaced positioning rollers, and the multiple positioning rollers are located on the side of the support back plate facing the pickup mechanism.

[0013] In some embodiments, the material storage device further includes a scanning mechanism for scanning markers set on the roll; an access window is provided on one side of the storage compartment, allowing the roll to enter and exit the storage compartment, and the scanning mechanism is located on the access window.

[0014] The material storage and retrieval equipment provided in this application allows for the following process: When material needs to be stored, the drive assembly drives the retracted expansion shaft assembly to insert into the second end of the drum. Then, the expansion shaft assembly is switched to an expanded state, and the drive assembly moves the expansion shaft assembly and the drum to insert the first end of the drum into the positioning roller. The expansion shaft assembly is then switched back to a retracted state, and the drive assembly pulls it out of the second end of the drum, placing the drum stably on the positioning roller. When material needs to be retrieved, the drive assembly drives the retracted expansion shaft assembly to insert into the second end of the drum. Then, the expansion shaft assembly is switched to an expanded state, and the drive assembly moves the expansion shaft assembly and the drum, pulling the first end of the drum out of the positioning roller and moving it to a designated position. The expansion shaft assembly is then switched back to a retracted state, and the drive assembly pulls it out of the second end of the drum, placing the drum stably at the designated position. Attached Figure Description

[0015] Figure 1 A schematic diagram of the working state of the material storage and retrieval equipment provided in this application.

[0016] Figure 2 A structural diagram of the material provided in this application.

[0017] Figure 3 A schematic diagram of the working status of the picking mechanism provided in this application.

[0018] Figure 4 A cross-sectional view of the placement platform provided in this application when materials are placed on it.

[0019] Figure 5 This is a schematic diagram showing the state of the picking mechanism provided in this application when picking up the first roll.

[0020] Figure 6 This is a schematic diagram showing the state of the picking mechanism provided in this application when picking up the second roll.

[0021] Explanation of main component symbols

[0022] 100. Storage compartment; 200. Pick-up mechanism; 300. Reel; 300A. First reel; 300B. Second reel; 301. First end; 302. Second end; 303. Identifier; 10. Frame; 11. Access window; 12. Reception space; 13. Placement platform; 14. Limiting roller; 20. Support back plate; 30. Positioning roller; 30A. First positioning roller; 30B. Second positioning roller; 31. First support part; 32. Second support part; 33. First buffer pad; 34. Second buffer pad; 40. Expansion shaft assembly; 41. First expansion shaft; 42. Second expansion shaft; 50. Drive assembly; 51. Movable end; 60. Sensing assembly; 61. First sensor; 62. Second sensor. Detailed Implementation

[0023] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0024] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an element positioned in between. When an element is considered to be "set" on another element, it can be directly set on the other element or there may be an element positioned in between. In this application, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising” and “equivalent to”, and any variations thereof, in the specification, claims, and foregoing description of the drawings, are intended to cover non-exclusive inclusion.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] This application provides a material storage and retrieval device.

[0028] Figure 1 A schematic diagram of the working state of the material storage and retrieval equipment provided in this application. Figure 2 A structural diagram of the material provided in this application.

[0029] like Figure 1 and Figure 2 As shown, the material storage and retrieval equipment can be used to store and retrieve materials. The materials can be a single roll 300, or a combination of roll 300 and raw materials wound around it. The raw materials can be RTR raw materials such as CVL and copper foil. Roll 300 is equipped with a marker 303, which carries information corresponding to the material.

[0030] For example, the two ends of the roll 300 are respectively formed as a first end 301 and a second end 302. Both the first end 301 and the second end 302 can be used by an external support structure to be inserted into the interior of the roll 300 to support and fix the roll 300. By scanning the marker 303 with an external scanning device, material information corresponding to the material can be obtained, thereby performing information management and realizing the function of material traceability.

[0031] The material storage and retrieval equipment includes a storage bin 100 and a picking mechanism 200. The storage bin 100 has an internal receiving space 12, and the picking mechanism 200 is disposed within the receiving space 12, which is capable of storing materials. The picking mechanism 200 is used to pick up materials outside the storage bin 100 and place them inside the storage bin 100, or to pick up materials inside the storage bin 100 and transport them outside the storage bin 100.

[0032] Figure 3A schematic diagram of the working status of the picking mechanism provided in this application.

[0033] like Figures 1 to 3 As shown, the storage compartment 100 includes a frame 10, a support back plate 20, and a positioning roller 30. The support back plate 20 is disposed on the frame 10, and the positioning roller 30 is disposed on the support back plate 20. The positioning roller 30 is used to insert into the first end 301 of the roll 300. Thus, when the first end 301 of the roll 300 is inserted into the positioning roller 30, the positioning roller 30 can position the roll 300.

[0034] The pickup mechanism 200 includes an expansion shaft assembly 40 and a drive assembly 50, wherein the drive assembly 50 is connected to the expansion shaft assembly 40 and is used to drive the expansion shaft assembly 40 to move. The expansion shaft assembly 40 has a retracted state and an expanded state, and is used to insert into the second end 302 of the reel 300.

[0035] When the expansion shaft assembly 40 is in the retracted state, the radius of the expansion shaft assembly 40 is smaller than the inner radius of the corresponding drum 300, and the expansion shaft assembly 40 can be inserted into or withdrawn from the second end 302 of the drum 300.

[0036] When the expansion shaft assembly 40 is in an expanded state, its radius is larger than the inner radius of the corresponding drum 300. Thus, when the expansion shaft assembly 40 is inserted into the second end 302 of the drum 300 and is in an expanded state, the expansion shaft assembly 40 abuts against the inner wall of the drum 300, and at this time, the expansion shaft assembly 40 can drive the drum 300 to move.

[0037] When materials need to be stored, the material storage and retrieval equipment provided in this application can be used to drive the retracted expansion shaft assembly 40 to insert into the second end 302 of the drum 300 by the drive assembly 50, then switch the expansion shaft assembly 40 to the expanded state, and then drive the expansion shaft assembly 40 and the drum 300 to move by the drive assembly 50 so that the first end 301 of the drum 300 is inserted into the positioning roller 30. Then, the expansion shaft assembly 40 is switched to the retracted state, and the expansion shaft assembly 40 in the retracted state is pulled out from the second end 302 of the drum 300 by the drive assembly 50 so that the drum 300 is placed stably on the positioning roller 30.

[0038] When it is necessary to remove material, the expansion shaft assembly 40 in the retracted state can be driven by the drive assembly 50 to insert into the second end 302 of the drum 300. Then, the expansion shaft assembly 40 is switched to the expanded state. The drive assembly 50 is then used to move the expansion shaft assembly 40 and the drum 300 to pull the first end 301 of the drum 300 away from the positioning roller 30 and move it to the designated position. Then, the expansion shaft assembly 40 is switched to the retracted state, and the drive assembly 50 is used to pull the expansion shaft assembly 40 in the retracted state away from the second end 302 of the drum 300 to place the drum 300 stably in the designated position.

[0039] It is understood that the material storage and retrieval equipment provided in this application can automatically store and retrieve materials, thereby accelerating material storage and retrieval and improving processing efficiency.

[0040] like Figure 1 and Figure 2 As shown, in some embodiments, the material storage device further includes a scanning mechanism 300, which is used to scan the marker 303 disposed on the roll 300. A retrieval window 11 is provided on one side of the storage compartment 100, the retrieval window 11 is connected to the receiving space 12, and the retrieval window 11 allows the roll 300 to enter and exit the storage compartment 100. The scanning mechanism 300 is disposed on the retrieval window 11. For example, the scanning mechanism 300 can be a barcode scanner.

[0041] Figure 4 A cross-sectional view of the placement platform provided in this application when materials are placed on it.

[0042] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments, a placement platform 13 is provided at the access window 1111, and the placement platform 13 is provided with a limiting roller 14 for positioning the material. The limiting roller 14 is arranged vertically, and the drum 300 can be inserted into the limiting roller 14 so that the limiting roller 14 supports and limits the drum 300, so as to facilitate the picking mechanism 200 to pick it up.

[0043] In some embodiments, the limiting roller 14 includes a first limiting portion 141 and a second limiting portion 142. The first limiting portion 141 is disposed on the placement platform 13, and the second limiting portion 142 is disposed on the side of the first limiting portion 141 facing away from the placement platform 13. The radius of the first limiting portion 141 is larger than the radius of the second limiting portion 142. Exemplarily, the first limiting portion 141 and the second limiting portion 142 are integrally formed, and the first limiting portion 141 is bolted to the placement platform 13. The first limiting portion 141 and the second limiting portion 142 can be used to insert rollers 300 with different radii.

[0044] For example, the roll 300 can be divided into a first roll 300A and a second roll 300B, wherein the inner radius of the first roll 300A is larger than the inner radius of the second roll 300B. The first limiting part 141 can be inserted into the first roll 300A to position the first roll 300A; the second limiting part 142 can be inserted into the second roll 300B to position the second roll 300B.

[0045] It is understood that, through the first limiting part 141 and the second limiting part 142, the limiting roller 14 can respectively support the positioning of the roll 300 of different sizes to meet the diverse material storage and retrieval needs.

[0046] In the example of this application, the material storage equipment also includes a control device, which can be a PLC controller. Both the picking mechanism 200 and the scanning mechanism 300 are electrically connected to the control device.

[0047] The identification element 303 on the roll 300 is a QR code, which is printed on the inside of the roll 300. The QR code carries material information, including the dimensions of the roll 300 and the material number. The positioning roller 30 is correspondingly equipped with position information, which allows the positioning roller 30 located at a specific position to be identified.

[0048] like Figures 1 to 4 As shown, the following is a description of the working method of the material storage and retrieval equipment provided in this application.

[0049] When materials need to be stored, the user can place the roll 300 on the placement platform 13 and scan the marker 303 set on the roll 300 using the scanning mechanism 300 to obtain the material information corresponding to the roll 300. Then, the control device allocates the corresponding storage position according to the material information, controls the picking mechanism 200 to pick up the roll 300, and inserts the roll 300 into the positioning roller 30 located at the storage position. In this way, automatic material storage can be realized, and a correlation between material information and storage position can be established.

[0050] When materials need to be retrieved, the user can first determine the material information corresponding to the material to be retrieved. Then, based on the material information, the control device determines the storage location of the roll 300, controls the picking mechanism 200 to pick up the roll 300 located at the storage location, and transfers the roll 300 to the placement platform 13 of the storage window 11 for the user to retrieve the corresponding material. In this way, automatic material retrieval can be achieved.

[0051] like Figure 3As shown, in some embodiments, there are multiple support back plates 20 distributed around the pickup mechanism 200. Each support back plate 20 is provided with multiple spaced positioning rollers 30, and the multiple positioning rollers 30 are located on the side of the support back plate 20 facing the pickup mechanism 200.

[0052] For example, the frame 10 is a cube in shape, the number of supporting back plates 20 is 3, the access window 11 is located on one side of the frame 10, the three supporting back plates 20 are respectively located on the remaining three sides of the frame 10, and the picking mechanism 200 is located in the middle of the receiving space 12.

[0053] Thus, multiple sides of the storage compartment 100 can be used to place multiple rolls 300, and the multiple rolls 300 can be distributed around the pickup mechanism 200, which facilitates the pickup structure to pick up or place the rolls 300, thereby improving pickup efficiency and space utilization.

[0054] In some embodiments, the support back plate 20 is arranged vertically, the positioning rollers 30 are at an angle to the vertical direction, and multiple positioning rollers 30 are arranged in an array at intervals on the support back plate 20. One end of the positioning roller 30 is connected to the support back plate 20, and the end of the positioning roller 30 away from the support back plate 20 is into which the roll 300 is inserted. In this way, the roll 300 can be hung on the positioning rollers 30, so that multiple rolls 300 can form a three-dimensional distribution in the vertical plane, improving space utilization.

[0055] In some embodiments, one end of the positioning roller 30 is fixed to the support back plate 20, and the other end of the positioning roller 30 is inclined upward.

[0056] Furthermore, when the drum 300 is inserted into the positioning roller 30, the drum 300 will move closer to the support back plate 20 under the action of gravity, so that the positioning roller 30 can be placed stably on the positioning roller 30, preventing the drum 300 from spontaneously detaching from the positioning roller 30.

[0057] Figure 5 This is a schematic diagram showing the state of the picking mechanism provided in this application when picking up the first roll. Figure 6 This is a schematic diagram showing the state of the picking mechanism provided in this application when picking up the second roll.

[0058] like Figure 3 , Figure 5 and Figure 6As shown, in some embodiments, the positioning roller 30 includes a first support portion 31 and a second support portion 32. The first support portion 31 is disposed on the support back plate 20, and the second support portion 32 is disposed on the side of the first support portion 31 facing away from the support back plate 20. The radius of the first support portion 31 is larger than the radius of the second support portion 32. Exemplarily, the first support portion 31 and the second support portion 32 are integrally formed, and the first support portion 31 is bolted to the support back plate 20. The first support portion 31 and the second support portion 32 can be used to insert rollers 300 with different radii.

[0059] For example, the roll 300 can be divided into a first roll 300A and a second roll 300B, wherein the inner radius of the first roll 300A is larger than the inner radius of the second roll 300B. A first support 31 can be inserted into the first roll 300A to position the first roll 300A; a second support 32 can be inserted into the second roll 300B to position the second roll 300B.

[0060] It is understood that, through the first support part 31 and the second support part 32, the positioning roller 30 can respectively support the positioning of the roll 300 of different sizes to meet the diverse material storage and retrieval needs.

[0061] In some embodiments, the plurality of positioning rollers 30 have multiple types, specifically divided into a first positioning roller 30A and a second positioning roller 30B. The first positioning roller 30A is used to position the material via the first support portion 31, that is, the first positioning roller 30A is used to place the first roll 300A. The second positioning roller 30B is used to position the material via the second support portion 32, that is, the second positioning roller 30B is used to place the second roll 300B.

[0062] In an array distribution of multiple positioning rollers 30, multiple positioning rollers 30 located in the same column belong to the same type of positioning roller 30, while multiple positioning rollers 30 located in adjacent columns are of different types. Thus, when multiple rollers 300 are placed on multiple positioning rollers 30, rollers 300 of the same type can be located in the same row, while rollers 300 of different types can be staggered in the vertical direction to facilitate the classification and management of various types of rollers 300.

[0063] In some embodiments, the support back plate 20 is provided with a first buffer pad 33, which is distributed around one end of the positioning roller 30. For example, the first buffer pad 33 is annular and is sleeved on the first support portion 31. When the first end 301 of the drum 300 is inserted into the positioning roller 30, the first buffer pad 33 can contact the first end 301 of the drum 300.

[0064] In some embodiments, a second buffer pad 34 is provided on the side of the first support portion 31 facing the second support portion 32, and the second buffer pad 34 is distributed around one end of the second support portion 32. When the first end 301 of the roll 300 is inserted into the second support portion 32, the second buffer pad 34 can contact the first end 301 of the roll 300.

[0065] It is understood that when the second spool 300B is placed on the second support portion 32, the second buffer pad 34 abuts against the second spool 300B. When the first spool 300A is placed on the first support portion 31, the first buffer pad 33 abuts against the first spool 300A. In this way, damage to the first spool 300A or the second spool 300B during the pickup process can be reduced.

[0066] In some embodiments, the positioning roller 30 is provided with a sensing component 60, which is used to detect the spool 300 inserted into the positioning roller 30. The sensing component 60 is electrically connected to a control device. When the spool 300 is inserted into the positioning roller 30, the corresponding sensing component 60 outputs a sensing signal to the control device. In this way, it is possible to sense whether the spool 300 has been inserted into or removed from the corresponding positioning roller 30 during the picking process.

[0067] Specifically, the sensing component 60 includes a first sensing element 61 and a second sensing element 62. The first sensing element 61 is disposed on the first support portion 31 and is used to sense the first spool 300A inserted into the first support portion 31. The second sensing element 62 is used to sense the second spool 300B inserted into the second support portion 32.

[0068] For example, both the first sensing element 61 and the second sensing element 62 are photoelectric sensors, which are embedded in the positioning roller 30. Specifically, the first sensing element 61 is disposed on the first positioning roller 30A, and the second sensing element 62 is disposed on the second positioning roller 30B.

[0069] When the first spool 300A is inserted into the first support portion 31, the first spool 300A covers the first sensing element 61; when the first spool 300A is removed from the first support portion 31, the first sensing element 61 is exposed outside the first support portion 31, thus enabling sensing of the first spool 300A. When the second spool 300B is inserted into the second support portion 32, the second spool 300B covers the second sensing element 62; when the second spool 300B is removed from the second support portion 32, the second sensing element 62 is exposed outside the second support portion 32, thus enabling sensing of the second spool 300B.

[0070] In some embodiments, the drive component 50 is a multi-axis manipulator, and the expansion shaft component 40 is disposed at the active end 51 of the multi-axis manipulator. The multi-axis manipulator can drive the expansion shaft component 40 to translate and rotate in the XYZ axis direction.

[0071] In some embodiments, the expansion shaft assembly 40 includes a first expansion shaft 41 and a second expansion shaft 42, wherein both the first expansion shaft 41 and the second expansion shaft 42 are connected to the drive assembly 50, and the radius of the first expansion shaft 41 in the expanded state is larger than the radius of the second expansion shaft 42 in the expanded state. The first expansion shaft 41 and the second expansion shaft 42 can be used to insert reels 300 with different radii, respectively.

[0072] For example, the roll 300 can be divided into a first roll 300A and a second roll 300B, wherein the inner radius of the first roll 300A is larger than the inner radius of the second roll 300B. When the first roll 300A needs to be accessed, the drive assembly 50 can insert the first expansion shaft 41 into the first roll 300A. When the second roll 300B needs to be accessed, the drive assembly 50 can insert the second expansion shaft 42 into the second roll 300B. In this way, the pickup mechanism 200 supports the pickup of rolls 300 of different sizes, improving the applicability of the pickup mechanism 200.

[0073] For example, both the first expansion shaft 41 and the second expansion shaft 42 are air expansion shafts. The air expansion shaft has a boss structure on its periphery and is connected to an external gas source. When the gas source does not inflate the air expansion shaft, the boss structure is flush with the outer side of the air expansion shaft, and the air expansion shaft is in a retracted state. When the gas source inflates the air expansion shaft, the boss structure protrudes from the outer side of the air expansion shaft, and the air expansion shaft is in an expanded state.

[0074] The first expansion shaft 41 and the second expansion shaft 42 are at an included angle, and one end of the first expansion shaft 41 and one end of the second expansion shaft 42 are both fixed to the movable end 51 of the multi-axis robot. In this way, by rotating the movable end 51, the multi-axis robot can drive the first expansion shaft 41 or the second expansion shaft 42 to align and insert into the corresponding drum 300.

[0075] Thus, the drive assembly 50 can support the rotational switching of the first expansion shaft 41 and the second expansion shaft 42, as well as the drive displacement of the first expansion shaft 41 and the second expansion shaft 42, thereby enabling the picking up of drums 300 of different sizes.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A material storage and retrieval device, characterized in that, The material storage and retrieval equipment includes a storage bin and a picking mechanism. The storage compartment includes: frame; A supporting backplate is disposed on the frame; A positioning roller is disposed on the support back plate, and the positioning roller is used to insert into the first end of the drum; The pickup mechanism includes: Expansion shaft assembly; A drive component is disposed within the storage compartment and connected to the expansion shaft assembly, the drive component being used to drive the expansion shaft assembly to move; When the expansion shaft assembly is in the retracted state, it can be inserted into or withdrawn from the second end of the drum; when the expansion shaft assembly is inserted into the second end of the drum and is in the expanded state, it can drive the drum to move.

2. The material storage and retrieval device according to claim 1, characterized in that, The expansion shaft assembly includes a first expansion shaft and a second expansion shaft, both of which are connected to the drive assembly. The radius of the first expansion shaft in the expanded state is greater than the radius of the second expansion shaft in the expanded state.

3. The material storage and retrieval device according to claim 2, characterized in that, The drive assembly is a multi-axis manipulator, with an included angle between the first expansion shaft and the second expansion shaft, and both the first expansion shaft and the second expansion shaft are connected to the movable end of the multi-axis manipulator.

4. The material storage and retrieval device according to claim 1, characterized in that, The support back plate is arranged vertically, one end of the positioning roller is connected to the support back plate, and the other end of the positioning roller is inclined upward.

5. The material storage and retrieval device according to claim 4, characterized in that, The support back plate is provided with a first buffer pad, which is distributed around one end of the positioning roller; when the first end of the drum is inserted into the positioning roller, the first buffer pad can contact the first end of the drum.

6. The material storage and retrieval device according to claim 1, characterized in that, The positioning roller includes a first support portion and a second support portion. The first support portion is connected to the support back plate, and the second support portion is disposed on the side of the first support portion away from the support back plate. The radius of the first support portion is larger than the radius of the second support portion.

7. The material storage and retrieval device according to claim 6, characterized in that, A second buffer pad is provided on the side of the first support portion facing the second support portion, and the second buffer pad is distributed around one end of the second support portion; when the first end of the roll is inserted into the second support portion, the second buffer pad can contact the first end of the roll.

8. The material storage and retrieval device according to claim 1, characterized in that, The positioning roller is equipped with a sensing component, which is used to detect the roll inserted into the positioning roller.

9. The material storage and retrieval device according to claim 1, characterized in that, The support back plate has multiple support back plates distributed around the pickup mechanism. Each support back plate is provided with multiple positioning rollers spaced apart, and the multiple positioning rollers are located on the side of the support back plate facing the pickup mechanism.

10. The material storage and retrieval device according to claim 1, characterized in that, The material storage equipment also includes a scanning mechanism for scanning the markers set on the roll; A retrieval window is provided on one side of the storage compartment, which allows the roll to enter and exit the storage compartment, and the scanning mechanism is located in the retrieval window.

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