Material taking and weighing device

Abstract

The utility model provides a kind of material taking and weighing device, it is related to precious metal processing technical field, material taking and weighing device includes base, base is equipped with opening box, material taking, overturning, weighing, removal and tray mechanism, opening box mechanism flips paper box cover, tray mechanism supplies first tray, overturning mechanism includes placement platform and overturning tray assembly, material taking mechanism removes second tray in paper box and is loaded with precious metal and is transferred to placement platform, removal mechanism removes first tray from tray mechanism, cover is equipped in second tray, after first tray cover is equipped in second tray, overturning tray assembly is clamped two trays simultaneously after two trays are overturned, material taking mechanism removes second tray from placement platform, removal mechanism has been loaded with precious metal first tray is transferred to weighing mechanism, weighing mechanism is weighed to first tray that has been loaded with precious metal, automatically complete to take out precious metal from paper box, replace tray bearing and weigh.

Description

Technical Field

[0001] This utility model relates to the field of precious metal processing technology, and in particular to a material weighing device. Background Technology

[0002] In the processing of precious metals (such as gold), the precious metals need to be weighed after changing pallets. However, the current operation process has many pain points that urgently need optimization. Specifically, when precious metals are placed in a pallet (in this text, for simplicity, the pallet containing precious metals in a cardboard box is referred to as the second pallet) and stored in the box, when it is necessary to change the carrying pallet (in this text, for simplicity, the pallet used to replace the carrying pallet is referred to as the first pallet), workers must manually open the box lid, remove the precious metals from the original pallet, and place them on another designated pallet. Similarly, in the weighing process, the precious metals also need to be manually placed on the weighing equipment for weight measurement. The intervention of manual operation not only increases the labor intensity but also greatly reduces the overall efficiency of precious metal processing. Especially when facing a large demand for precious metal material weighing, the limitations of manual operation become increasingly apparent. Therefore, developing an automated device that can automatically complete the process of removing precious metals from the cardboard box, changing the carrying pallet, and weighing is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] The purpose of this invention is to provide a material handling and weighing device that can automatically remove precious metals from cartons, change pallets for support, and weigh them.

[0004] To achieve the above objectives, the technical solution of this utility model embodiment is as follows: A material handling and weighing device includes a base, the base being provided with an opening mechanism, a material handling mechanism, a flipping mechanism, a weighing mechanism, a transfer mechanism, and a pallet mechanism; The opening mechanism is used to rotate and fold the lid of the carton to make the internal space of the carton visible. The pallet mechanism is used to supply a first pallet. The flipping mechanism includes a placement platform and a pallet flipping assembly. The picking mechanism is used to pick up the second pallet containing precious metals from the carton after the internal space of the carton is visible, and transfer it to the placement platform. The transfer mechanism is used to pick up the first pallet from the pallet mechanism and cover it on the second pallet containing precious metals placed on the placement platform. The pallet flipping assembly is used to clamp both pallets and flip them after the first pallet covers the second pallet, so that the precious metals are transferred from the second pallet to the first pallet. The picking mechanism is also used to pick up the second pallet containing the precious metals from the placement platform. The transfer mechanism is also used to transfer the first pallet containing the precious metals to the weighing mechanism. The weighing mechanism is used to weigh the first pallet containing the precious metals.

[0005] Furthermore, The box opening mechanism includes a first box opening component, a second box opening component, a third box opening component, and a fourth box opening component. Each box opening component includes a suction cup and a rotary drive component for driving the suction cup to rotate. The first box opening component and the second box opening component are opposite to each other and spaced apart. The third box opening component and the fourth box opening component are opposite to each other and spaced apart. The first box opening component, the second box opening component, the third box opening component, and the fourth box opening component form a surrounding structure around the carton to be folded.

[0006] Furthermore, The material weighing device includes a positioning mechanism, which is used to position the carton when the carton opening mechanism rotates and folds the carton lid. The positioning mechanism includes a limiting block, a clamping block, and a clamping drive. The clamping drive is used to drive the clamping block to move in a direction away from or close to the limiting block. The limiting block includes a first limiting sub-block and a second limiting sub-block, which are arranged at a 90-degree angle. The clamping block includes a first clamping sub-block and a second clamping block, which are arranged at a 90-degree angle.

[0007] Furthermore, The material handling mechanism includes a first material handling drive, a second material handling drive, a third material handling drive, and two material handling clamps. The first material handling drive is used to drive the second material handling drive, the third material handling drive, and the two material handling clamps to move along the X-axis. The second material handling drive is used to drive the third material handling drive and the two material handling clamps to move along the Z-axis. The third material handling drive is used to drive the two material handling clamps to move relative to each other to clamp or release the second tray.

[0008] Furthermore, The pallet-flipping assembly includes a pallet-clamping drive, a pallet-flipping drive, and two pallet clamps. The pallet-clamping drive is used to drive the two pallet clamps to move relative to each other to simultaneously clamp or release the two pallets. The pallet-flipping drive is used to drive the pallet-clamping drive and the two pallets held by the two pallet clamps to flip over.

[0009] Furthermore, The weighing mechanism includes a support frame and a weighing scale mounted on the support frame.

[0010] Furthermore, The transfer mechanism includes a first transfer drive, a second transfer drive, a third transfer drive, a fourth moving drive, and two tray chucks. The first transfer drive is used to drive the second transfer drive, the third transfer drive, the fourth moving drive, and the two tray chucks to move along the Y-axis. The second transfer drive is used to drive the third transfer drive, the fourth moving drive, and the two tray chucks to move along the X-axis. The third transfer drive is used to drive the fourth moving drive and the two tray chucks to move along the Z-axis. The fourth moving drive is used to drive the two tray chucks to move relative to each other to clamp or release the first tray.

[0011] Furthermore, The pallet mechanism includes a fence, a pallet, and a lifting drive. The pallet carries multiple stacked first pallets, the fence is arranged around the multiple stacked first pallets, and the lifting drive is used to drive the pallet to move along the Z-axis.

[0012] Furthermore, The material weighing device also includes a carton conveyor line and a first abnormal product conveyor line. The carton conveyor line is used to transport the cartons that have been removed from the second pallet to the collection box, and the first abnormal product conveyor line is used to transport the cartons that are not loaded with precious metals from the second pallet to the manual re-inspection station.

[0013] Furthermore, The material weighing device also includes a second abnormal product conveyor line, which is used to convey the first pallet, which is abnormally heavy and contains precious metals, to the manual re-inspection station.

[0014] Compared with the prior art, the embodiments of this utility model have at least the following technical effects: The material handling and weighing device of this utility model embodiment includes a base, which is equipped with an opening mechanism, a material handling mechanism, a flipping mechanism, a weighing mechanism, a transfer mechanism, and a pallet mechanism. The opening mechanism rotates and folds the lid of the carton to make the internal space of the carton visible. The pallet mechanism supplies a first pallet. The flipping mechanism includes a placement platform and a pallet flipping assembly. After the internal space of the carton is visible, the material handling mechanism clamps and removes a second pallet containing precious metals from the carton and transfers it to the placement platform. The transfer mechanism removes the first pallet from the pallet mechanism and covers the second pallet containing precious metals placed on the placement platform. After the first pallet covers the second pallet, the pallet flipping assembly clamps both pallets and flips them to transfer the precious metals from the second pallet to the first pallet. The material handling mechanism removes the second pallet containing the precious metals from the placement platform. The transfer mechanism transfers the first pallet containing the precious metals to the weighing mechanism. The weighing mechanism weighs the first pallet containing the precious metals. Replacing manual labor, it can automatically complete the removal of precious metals from the carton, pallet replacement, and weighing. Attached Figure Description

[0015] Figure 1 A schematic diagram of an embodiment of the material weighing device; Figure 2 This is a schematic diagram of the opening mechanism in one embodiment of the material weighing device; Figure 3 This is a schematic diagram of the material handling mechanism in one embodiment of the material handling and weighing device; Figure 4 A schematic diagram of the flipping mechanism in one embodiment of the material weighing device; Figure 5 A schematic diagram of the weighing mechanism in one embodiment of the material weighing device; Figure 6 A schematic diagram of the transfer mechanism in one embodiment of the material weighing device; Figure 7 A schematic diagram of the pallet mechanism in one embodiment of the material weighing device; Figure 8 This is a schematic diagram of the positioning mechanism in one embodiment of the material weighing device.

[0016] Explanation of icon numbers: 10. Base; 11. Carton conveyor line; 12. First defective product conveyor line; 13. Second defective product conveyor line; 20. Carton opening mechanism; 21. First carton opening assembly; 22. Second carton opening assembly; 23. Third carton opening assembly; 24. Fourth carton opening assembly; 210. Suction cup; 211. Rotary drive component; 30. Material handling mechanism; 31. First material handling drive component; 32. Second material handling drive component; 33. Third material handling drive component; 34. Material handling clamp; 40. Tilting mechanism; 41. Placement platform; 42. Pallet flipping assembly; 420. Pallet clamping drive; 421. Pallet flipping drive; 422. Pallet chuck; 50. Weighing mechanism; 51. Support; 52. Weighing scale; 60. Transfer mechanism; 61. First transfer drive; 62. Second transfer drive; 63. Third transfer drive; 64. Fourth movement drive; 65. Pallet chuck; 70. Pallet mechanism; 71. First pallet; 72. Enclosure; 73. Pallet plate; 74. Lifting drive; 80. Carton; 81. Second pallet; 90. Positioning mechanism; 91. Limiting block; 910. First limiting sub-block; 911. Second limiting sub-block; 92. Tightening block; 920. First tightening sub-block; 921. Second tightening sub-block; 93. Tightening drive. Detailed Implementation

[0017] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. 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 utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0018] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Please see Figure 1-8As shown in one embodiment of this utility model, a material handling and weighing device includes a base 10. The base 10 is provided with an opening mechanism 20, a material handling mechanism 30, a flipping mechanism 40, a weighing mechanism 50, a transfer mechanism 60, and a pallet mechanism 70. The opening mechanism 20 rotates and folds the lid of a cardboard box 80 to make the internal space of the cardboard box 80 visible. The pallet mechanism 70 supplies a first pallet 71. The flipping mechanism 40 includes a placement platform 41 and a pallet flipping assembly 42. After the internal space of the cardboard box 80 is visible, the material handling mechanism 30 picks up a second pallet 81 containing precious metals (such as gold) from the cardboard box 80 and transfers it to the placement platform 41. The transfer mechanism 60 removes the first pallet 71 from the pallet mechanism 70 and covers the second pallet 81 containing precious metals on the placement platform 41. After the first pallet 71 is covered by the second pallet 81, the... The pallet-flipping assembly 42 simultaneously clamps and flips the two pallets, transferring the precious metal from the second pallet 81 to the first pallet 71. After the precious metal in the second pallet 81 has been removed, the material-picking mechanism 30 removes the second pallet 81 from the placement platform 41. The transfer mechanism 60 transfers the first pallet 71 loaded with precious metal to the weighing mechanism 50. The weighing mechanism 50 weighs the first pallet 71 loaded with precious metal. The weight of the first pallet 71 can be known in advance by weighing it through the weighing mechanism 50. When the weighing mechanism 50 weighs the first pallet 71 loaded with precious metal in combination, the individual weight of the precious metal can be known. This material-picking and weighing device can automatically complete the removal of precious metal from the carton 80, pallet replacement, and weighing through the above technical solution, replacing manual labor, reducing the labor intensity of workers, and improving the overall efficiency of precious metal processing.

[0020] Please see Figure 1-2As shown, in one embodiment of the present invention, the box opening mechanism 20 includes a first box opening component 21, a second box opening component 22, a third box opening component 23, and a fourth box opening component 24. Each box opening component includes a suction cup 210 and a rotary drive component 211 for driving the suction cup 210 to rotate. The first box opening component 21 and the second box opening component 22 are opposite to each other and spaced apart. The third box opening component 23 and the fourth box opening component 24 are opposite to each other and spaced apart. The first box opening component 21, the second box opening component 22, the third box opening component 23, and the fourth box opening component 24 form a surrounding structure around the carton 80 to be folded. In this embodiment, the first box-opening assembly 21, the second box-opening assembly 22, the third box-opening assembly 23, and the fourth box-opening assembly 24 are arranged around the cardboard box 80 whose lids are to be folded. Each box-opening assembly includes a suction cup 210 and a rotary drive 211 that drives the suction cup 210 to rotate. Under the driving action of the rotary drive 211, the suction cup 210 of each box-opening assembly picks up the four lids around the cardboard box 80 and completes the rotation and folding, so that the internal space of the cardboard box 80 is visible (e.g., ...). Figure 2 As shown in the figure, in this embodiment, the rotary drive component 211 is a rotary drive cylinder. In other embodiments, the rotary drive component 211 may be a rotary motor or a rotary hydraulic cylinder, etc., and the specific configuration can be determined according to the situation.

[0021] Please see Figure 8 As shown, in one embodiment of this utility model, the material weighing device includes a positioning mechanism 90. When the carton opening mechanism 20 rotates and folds the carton 80 lid, the positioning mechanism 90 positions the carton 80. The positioning mechanism 90 includes a limiting block 91, a pressing block 92, and a pressing drive member 93. The pressing drive member 93 drives the pressing block 92 to move in a direction away from or towards the limiting block 91. The limiting block 91 includes a first limiting sub-block 910 and a second limiting sub-block 911. The clamping blocks 911 are arranged at a 90-degree angle. The clamping block 92 includes a first clamping sub-block 920 and a second clamping sub-block 921. The first clamping sub-block 920 and the second clamping sub-block 921 are arranged at a 90-degree angle. Under the driving action of the clamping drive member 93, the clamping block 92 and the limiting block 91 move towards each other and clamp the carton 80, thus stably positioning the carton 80. In this embodiment, the clamping drive member 93 is a drive cylinder. In other embodiments, the clamping drive member 93 can be a linear motor or a linear module, etc., and can be set according to the specific situation.

[0022] Please see Figure 1 as well as Figure 3As shown, in one embodiment of this utility model, the material handling mechanism 30 includes a first material handling drive 31, a second material handling drive 32, a third material handling drive 33, and two material handling clamps 34. The first material handling drive 31 drives the second material handling drive 32, the third material handling drive 33, and the two material handling clamps 34 to move along the X-axis direction. The second material handling drive 32 drives the third material handling drive 33 and the two material handling clamps 34 to move along the Z-axis direction. The third material handling drive 33 drives the two material handling clamps 34 to move relative to each other to clamp or release the second tray 81. This is achieved through the aforementioned solution. Once the internal space of the carton 80 is visible, the material handling mechanism 30 can clamp and remove the second tray 81 containing precious metals (such as gold) from the carton 80 and transfer it to the placement platform 41. In this embodiment, the first material handling drive 31 and the second material handling drive 32 are linear modules, and the third material handling drive 33 is a clamping cylinder. In other embodiments, the first material handling drive 31 and the second material handling drive 32 can also be linear motors, cylinders, or hydraulic cylinders, etc., and the third material handling drive 33 can also be linear motors, cylinders, or hydraulic cylinders, etc. The specific settings can be made according to the situation.

[0023] Please see Figure 4 As shown, in one embodiment of this utility model, the pallet-flipping assembly 42 includes a pallet-clamping drive 420, a pallet-flipping drive 421, and two pallet clamps 422. The pallet-clamping drive 420 drives the two pallet clamps 422 to move relative to each other to simultaneously clamp or release the two pallets. The pallet-flipping drive 421 drives the pallet-clamping drive 420 and the two pallets clamped by the two pallet clamps 422 to flip. In this embodiment, the pallet-clamping drive 420 is a clamping cylinder, and the pallet-flipping drive 421 is a rotary cylinder. In other embodiments, the pallet-clamping drive 420 can also be a linear motor or a linear module, etc., and the pallet-flipping drive 421 can be a rotary motor, etc. The specific configuration can be adjusted according to the situation.

[0024] Please see Figure 5 As shown, in one embodiment of the present invention, the weighing mechanism 50 includes a support 51 and a weighing scale 52 disposed on the support 51, the weighing scale 52 weighing the first tray 71 loaded with precious metal.

[0025] Please see Figure 6As shown, in one embodiment of this utility model, the transfer mechanism 60 includes a first transfer drive 61, a second transfer drive 62, a third transfer drive 63, a fourth movement drive 64, and two tray chucks 65. The first transfer drive 61 drives the second transfer drive 62, the third transfer drive 63, the fourth movement drive 64, and the two tray chucks 65 to move along the Y-axis direction. The second transfer drive 62 drives the third transfer drive 63, the fourth movement drive 64, and the two tray chucks 65 to move along the X-axis direction. The third transfer drive 63 drives the fourth movement drive 64 and the two tray chucks 65 to move along the Z-axis direction. The fourth movement drive 64 drives the two tray chucks 65 to move relative to each other to clamp or release the first tray 71. The transfer mechanism 60 removes the first tray 71 from the tray mechanism 70 and covers it on the second tray 81, which is already loaded with precious metal, on the placement platform 41. Once the first tray 71 is loaded with precious metal, the transfer mechanism 60 transfers the first tray 71 to the weighing mechanism 50. In this embodiment, the first transfer drive 61, the second transfer drive 62, and the third transfer drive 63 are linear modules, and the fourth movement drive 64 is a clamping cylinder. In other embodiments, the first transfer drive 61, the second transfer drive 62, and the third transfer drive 63 can also be linear drives such as linear motors.

[0026] Please see Figure 7 As shown, in one embodiment of this utility model, the pallet mechanism 70 includes a fence 72, a pallet 73, and a lifting drive 74. The pallet 73 carries a plurality of stacked first pallets 71. The fence 72 is arranged around the plurality of stacked first pallets 71. The lifting drive 74 drives the pallet 73 to move along the Z-axis. In this embodiment, after the uppermost first pallet 71 is removed from the pallet mechanism 70 by the transfer mechanism 60, the lifting drive 74 drives the pallet 73 to move along the Z-axis, and the stacked first pallets 71 move upward by one pallet position. The pallet mechanism 70 then supplies a new first pallet 71.

[0027] Please see Figure 1As shown, in one embodiment of this utility model, the material weighing device further includes a carton conveyor line 11 and a first abnormal item conveyor line 12. After the carton 80 is removed from the second pallet 81, the carton conveyor line 11 transports it to the collection box for centralized collection of the carton 80. When the carton 80 is rotated and folded by the carton opening mechanism 20, the inside of the carton 80 is visible. The vision mechanism detects that the second pallet 81 inside the carton 80 does not contain precious metals. The first abnormal item conveyor line 12 can transport the carton 80 in the second pallet 81 without precious metals to the manual re-inspection table, where workers further inspect the abnormal loading of the carton 80.

[0028] Please see Figure 1 As shown, in one embodiment of this utility model, the material weighing device further includes a second abnormal product conveying line 13. After the weighing mechanism 50 weighs the first pallet 71 loaded with precious metals and finds an abnormal weight, the second abnormal product conveying line 13 transports the first pallet 71 loaded with precious metals to the manual re-inspection station, where workers further inspect the abnormal weight.

[0029] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A material weighing device, characterized in that, Includes a base (10), which is provided with an opening mechanism (20), a material picking mechanism (30), a flipping mechanism (40), a weighing mechanism (50), a transfer mechanism (60), and a pallet mechanism (70); The opening mechanism (20) is used to rotate and fold the lid of the carton (80) to make the internal space of the carton (80) visible. The pallet mechanism (70) is used to supply the first pallet (71). The flipping mechanism (40) includes a placement platform (41) and a pallet flipping assembly (42). The picking mechanism (30) is used to pick up the second pallet (81) containing precious metals from the carton (80) after the internal space of the carton (80) is visible, and transfer it to the placement platform (41). The transfer mechanism (60) is used to remove the first pallet (71) from the pallet mechanism (70) and place it on the placement platform (41). The second pallet (81) containing precious metals is placed on the first pallet (71). The pallet flipping assembly (42) is used to clamp the two pallets and flip them after the first pallet (71) is placed on the second pallet (81) so that the precious metals are transferred from the second pallet (81) to the first pallet (71). The material picking mechanism (30) is also used to remove the second pallet (81) containing the precious metals from the placement platform (41). The transfer mechanism (60) is also used to transfer the first pallet (71) containing the precious metals to the weighing mechanism (50). The weighing mechanism (50) is used to weigh the first pallet (71) containing the precious metals.

2. The material weighing device according to claim 1, characterized in that, The box opening mechanism (20) includes a first box opening component (21), a second box opening component (22), a third box opening component (23), and a fourth box opening component (24). Each box opening component includes a suction cup (210) and a rotary drive component (211) for driving the suction cup (210) to rotate. The first box opening component (21) and the second box opening component (22) are opposite to each other and spaced apart. The third box opening component (23) and the fourth box opening component (24) are opposite to each other and spaced apart. The first box opening component (21), the second box opening component (22), the third box opening component (23), and the fourth box opening component (24) form a surrounding structure around the carton (80) to be folded.

3. The material weighing device according to claim 1, characterized in that, The material weighing device includes a positioning mechanism (90), which is used to position the carton (80) when the opening mechanism (20) rotates and folds the carton (80) lid. The positioning mechanism (90) includes a limiting block (91), a clamping block (92), and a clamping drive (93). The clamping drive (93) is used to drive the clamping block (92) to move away from or near the limiting block (91). The limiting block (91) includes a first limiting sub-block (910) and a second limiting sub-block (911), which are arranged at a 90-degree angle. The clamping block (92) includes a first clamping sub-block (920) and a second clamping sub-block (921), which are arranged at a 90-degree angle.

4. The material weighing device according to claim 1, characterized in that, The material handling mechanism (30) includes a first material handling drive (31), a second material handling drive (32), a third material handling drive (33), and two material handling clamps (34). The first material handling drive (31) is used to drive the second material handling drive (32), the third material handling drive (33), and the two material handling clamps (34) to move along the X-axis. The second material handling drive (32) is used to drive the third material handling drive (33) and the two material handling clamps (34) to move along the Z-axis. The third material handling drive (33) is used to drive the two material handling clamps (34) to move relative to each other to clamp or release the second tray (81).

5. The material weighing device according to claim 1, characterized in that, The pallet-flipping assembly (42) includes a pallet-clamping drive (420), a pallet-flipping drive (421), and two pallet clamps (422). The pallet-clamping drive (420) is used to drive the two pallet clamps (422) to move relative to each other to simultaneously clamp or release the two pallets. The pallet-flipping drive (421) is used to drive the pallet-clamping drive (420) and the two pallets clamped by the two pallet clamps (422) to flip.

6. The material weighing device according to claim 1, characterized in that, The weighing mechanism (50) includes a support (51) and a weighing scale (52) mounted on the support (51).

7. The material weighing device according to claim 1, characterized in that, The transfer mechanism (60) includes a first transfer drive (61), a second transfer drive (62), a third transfer drive (63), a fourth movement drive (64), and two tray chucks (65). The first transfer drive (61) is used to drive the second transfer drive (62), the third transfer drive (63), the fourth movement drive (64), and the two tray chucks (65) to move along the Y-axis. The second transfer drive (62) is used to drive the third transfer drive (63), the fourth movement drive (64), and the two tray chucks (65) to move along the X-axis. The third transfer drive (63) is used to drive the fourth movement drive (64) and the two tray chucks (65) to move along the Z-axis. The fourth movement drive (64) is used to drive the two tray chucks (65) to move relative to each other to clamp or release the first tray (71).

8. The material weighing device according to claim 1, characterized in that, The pallet mechanism (70) includes a fence (72), a pallet (73), and a lifting drive (74). The pallet (73) carries a plurality of stacked first pallets (71). The fence (72) is arranged around the plurality of stacked first pallets (71). The lifting drive (74) is used to drive the pallet (73) to move along the Z-axis.

9. The material weighing device according to claim 1, characterized in that, The material weighing device also includes a carton conveyor line (11) and a first abnormal product conveyor line (12). The carton conveyor line (11) is used to convey the carton (80) that has been removed from the second pallet (81) to the collection box. The first abnormal product conveyor line (12) is used to convey the carton (80) that is not loaded with precious metals from the second pallet (81) to the manual re-inspection station.

10. The material weighing device according to claim 1, characterized in that, The material weighing device also includes a second abnormal product conveying line (13), which is used to convey the first pallet (71) with abnormal weight and containing precious metals to the manual re-inspection station.

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