A continuous silver ingot multi-station post-processing device

Abstract

This invention provides a continuous multi-station post-processing device for silver ingots, including a conveying mechanism, a transfer and cooling mechanism, a grinding and polishing mechanism, and a marking mechanism. The conveying mechanism receives and buffers the silver ingots obtained from casting. The transfer and cooling mechanism includes a cooling water tank, which is used to transfer the silver ingots buffered on the conveying mechanism into the cooling water tank and simultaneously transfer the silver ingots out of the cooling water tank. The grinding and polishing mechanism is used to grind and / or polish the surface of the silver ingots. The marking mechanism is used to mark the surface of the silver ingots. During the process of transferring the silver ingots buffered on the conveying mechanism into the cooling water tank, the transfer and cooling mechanism of this invention simultaneously transfers the silver ingots out of the cooling water tank, thereby improving the transfer efficiency of the silver ingots. In addition, the transfer and cooling mechanism facilitates the simultaneous transfer of multiple silver ingots, which helps to speed up the cycle time of the post-processing stage of silver ingots and increase production capacity.

Description

Technical Field

[0001] This invention relates to the field of silver ingot post-processing technology, specifically to a continuous multi-station silver ingot post-processing device. Background Technology

[0002] Existing silver ingot casting machines include linear and rotary types. The transition from linear to rotary types solved the technical challenges of continuous casting. However, the current capacity bottleneck lies in the silver melting stage and the silver ingot post-processing stage, especially the latter. In the current silver ingot post-processing stage, existing technologies typically employ multiple robots to transfer ingots between various stations (water cooling, silver head removal, grinding and polishing, quality inspection, marking, weighing, stacking, etc.). However, robot transfer requires subsequent robots to move the ingots before the preceding process can move them. For example, after the robot for the silver head removal process moves the ingot from the water cooling station, the robot for the water cooling station can then move the cast ingot to the water cooling station. This results in a single ingot cycle time of typically 3 minutes or even longer, which cannot meet the cycle time requirements of the front-end melting and casting processes. Currently, the existing process can only achieve a capacity of 2 tons / 8 hours, or even lower. With the rapid development of the silver industry, this capacity level is no longer sufficient to meet the production needs of leading companies. Furthermore, when multiple workstations operate in parallel, using robots for transfer not only increases costs but also significantly increases the complexity of the control system; therefore, we propose a continuous multi-station post-processing device for silver ingots. Summary of the Invention

[0003] The purpose of this invention is to improve and innovate upon the shortcomings and problems existing in the prior art, and to provide a continuous multi-station post-processing device for silver ingots.

[0004] A continuous multi-station post-processing device for silver ingots includes:

[0005] The conveying mechanism is used to receive and buffer the silver ingots obtained from casting;

[0006] A transfer and cooling mechanism, comprising a cooling water tank, is used to transfer silver ingots buffered on the conveying mechanism into the cooling water tank and simultaneously transfer silver ingots out of the cooling water tank.

[0007] A grinding and polishing mechanism, which is used to grind and / or polish the surface of a silver ingot;

[0008] A marking mechanism, used to mark the surface of silver ingots;

[0009] The transfer and cooling mechanism is capable of cooling at least two silver ingots simultaneously, and the grinding and polishing mechanism is capable of grinding and / or polishing at least two silver ingots.

[0010] A further embodiment is that the conveying mechanism includes a conveyor chain, which is composed of a chain and square tubes. The square tubes are spaced apart on the chain. The chain conveys the square tubes forward under the action of a first rotating motor. A first cylinder is provided on both sides of the middle of the conveyor chain, and a first push plate is fixedly connected to the output end of the first cylinder.

[0011] A further embodiment is that the transfer and cooling mechanism also includes a transfer frame, on which a movable crossbeam is slidably fitted. One end of the movable crossbeam is connected to the output end of the first electric telescopic rod. Multiple sets of pneumatic gripper mechanisms are installed on the transfer frame. The pneumatic gripper mechanisms are arranged in pairs, and the two pneumatic gripper mechanisms are respectively used to clamp the silver ingots on the conveying mechanism into the cooling water tank and to transfer the silver ingots in the cooling water tank out.

[0012] A further embodiment is that the pneumatic gripper mechanism includes a second electric telescopic rod, which is mounted on a movable crossbeam. The output end of the second electric telescopic rod is fixedly connected to a gripper mounting plate, and a dual-axis cylinder is mounted on the gripper mounting plate. The output end of the dual-axis cylinder is fixedly connected to a vertical gripper.

[0013] A further embodiment is that a second cylinder is installed on the outer walls of both sides of the cooling water tank, and a connecting plate is fixedly connected to the output end of the second cylinder. A bracket and two air outlet pipes are provided inside the cooling water tank. The end of the connecting plate away from the second cylinder is connected to the bracket, and several air outlets facing the silver ingots are spaced apart on the air outlet pipes.

[0014] A further embodiment is that the bracket consists of a support part, a clearance part, and a connecting part. The clearance part is U-shaped, the support part is used to support the silver ingot, and the two ends of the support part are connected to the connecting part through the clearance part. The air outlet is located directly above the clearance part. A first driving mechanism is provided on the outer wall of the cooling water tank. The first driving mechanism is used to drive the air outlet to rotate so that when the height of the silver ingot is below the height of the air outlet, the air outlet discharges air at an angle downward. When the air gripper mechanism holds the silver ingot, the air outlet discharges air at an angle upward.

[0015] A further embodiment is that an infrared transmitter and an infrared receiver are installed on the inner wall of the cooling water tank. When the pneumatic gripper mechanism holds the silver ingot, the silver ingot is located between the infrared transmitter and the infrared receiver, so that the infrared receiver cannot receive the infrared light emitted by the infrared transmitter. When the infrared receiver can receive the infrared light emitted by the infrared transmitter, the air outlet is inclined downwards. When the infrared receiver cannot receive the infrared light emitted by the infrared transmitter, the air outlet is inclined upwards.

[0016] A further embodiment includes a marking mechanism comprising a marking table, on which a hydraulic cylinder is mounted. The output end of the hydraulic cylinder is fixedly connected to a lifting platform. The lifting platform drives the horizontal numbering machine and the ratchet to move up and down. The ratchet's axle is rotatably connected to the lower surface of the lifting platform, and the outer surface of the ratchet axle is also rotatably connected to one end of a swing arm. The end of the swing arm away from the ratchet axle is rotatably connected to a first pawl and fixedly connected to a fixing rod. The fixing rod hooks one end of a tension spring, and the other end of the tension spring is fixed to the lifting platform. The marking table also has a limiting post that abuts against the upper surface of the fixing rod, and a second pawl is rotatably connected to the lifting platform. When the lifting platform moves upward, the limiting post drives the fixing rod to rotate downward, causing the first pawl to drive the ratchet to rotate downward and automatically rotate the corresponding unit number wheel of the horizontal numbering machine by one position. The second pawl prevents the ratchet from reversing.

[0017] A further embodiment is that the marking mechanism also includes a positioning frame and a fixed platform. The side of the positioning frame slides with the fixed platform. A positioning slot is provided on the positioning frame. A fifth cylinder is installed on the fixed platform located at the positioning slot. The output end of the fifth cylinder is fixedly connected to a second push plate. The positioning slot can be moved to directly below the lifting platform under the action of the second drive mechanism.

[0018] A further embodiment is that the polishing mechanism includes a fifth rotary motor and a sixth rotary motor. The output end of the sixth rotary motor is fixedly connected to a first suction cup, which is used to hold the silver ingot. The output end of the fifth rotary motor is fixedly connected to a flipping spindle. The outer surface of the flipping spindle is fixedly connected to a second suction cup via a connecting rod, which is used to hold the side of the silver ingot away from the first suction cup.

[0019] Compared with the prior art, the beneficial effects of the present invention are: (1) During the process of transferring the silver ingots buffered on the conveying mechanism to the cooling water tank, the transfer and cooling mechanism of the present invention will simultaneously transfer the silver ingots in the cooling water tank out, thereby improving the transfer efficiency of the silver ingots; in addition, the transfer and cooling mechanism is convenient to transfer multiple silver ingots from the conveying mechanism to the cooling water tank at the same time and transfer multiple silver ingots from the cooling water tank to the sawing mechanism at the same time, which is beneficial to speeding up the cycle of the post-processing stage of the silver ingots;

[0020] (2) During the process of the bracket of the present invention driving the silver ingot upward, the air outlet is obliquely downward, which is convenient for drying the upper surface and side of the silver ingot; when the silver ingot moves to the top of the air outlet pipe and is held by the air gripper mechanism, since the bracket will no longer cover the lower surface of the silver ingot, the air outlet can be automatically switched to obliquely upward, which is convenient for drying the lower surface of the silver ingot, thus facilitating the rapid and all-round drying of the surface of the silver ingot and improving the cycle time of the post-processing stage of the silver ingot; in addition, by setting the avoidance part, the bracket can directly drive the silver ingot to the top of the air outlet pipe; at the same time, even if the air outlet pipe is arranged close to the silver ingot, it will not hinder the air gripper mechanism from holding the silver ingot, which is conducive to the air outlet pipe quickly drying the surface of the silver ingot.

[0021] (3) The grinding and polishing mechanism of the present invention, through the cooperation of the first robotic arm, the fifth rotary motor, the ingot turning spindle, the sixth rotary motor, the first suction cup and the second suction cup, facilitates grinding and / or polishing of the upper and lower surfaces and four sides of the silver ingot; on the other hand, the grinding and polishing of the upper and lower surfaces of the silver ingot are carried out on the first suction cup and the second suction cup respectively, so that the first suction cup will be idle during the grinding and polishing of the lower surface of the silver ingot, and the transfer mechanism can transfer the next sawn silver ingot to the first suction cup in time, which is conducive to further improving the cycle time of the post-processing stage of the silver ingot;

[0022] (4) The present invention utilizes the cooperation of a horizontal printing numbering machine, a ratchet, a first pawl, a swing rod, a fixed rod, a tension spring, a limiting post, and a second pawl. When the horizontal printing numbering machine prints a number on the silver ingot and moves upward with the lifting platform, the limiting post will prevent the fixed rod from moving upward with the lifting platform. This is equivalent to the limiting post driving the fixed rod to rotate downward. This causes the first pawl to drive the ratchet to rotate downward and drive the corresponding unit wheel of the horizontal printing numbering machine to rotate one position automatically. This enables the horizontal printing numbering machine to automatically complete the code change without additional operation, which further helps to improve the cycle time of the silver ingot post-processing stage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of a continuous multi-station post-processing device for silver ingots provided in an embodiment of the present invention.

[0025] Figure 2 This is a three-dimensional structural schematic diagram of the conveying mechanism provided in an embodiment of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the transfer and cooling mechanism provided in an embodiment of the present invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the cooling water tank provided in an embodiment of the present invention;

[0028] Figure 5 This is a three-dimensional structural diagram of the bracket provided in an embodiment of the present invention;

[0029] Figure 6 This is a schematic cross-sectional view of the air outlet duct provided in an embodiment of the present invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the sawing mechanism provided in an embodiment of the present invention;

[0031] Figure 8 This is a three-dimensional structural schematic diagram of the transfer mechanism provided in an embodiment of the present invention;

[0032] Figure 9 This is a three-dimensional structural diagram of the grinding and polishing mechanism provided in an embodiment of the present invention;

[0033] Figure 10 This is a three-dimensional structural diagram of the marking mechanism provided in an embodiment of the present invention;

[0034] Figure 11 Provided by the embodiments of the present invention Figure 10 A magnified view of the structure at point A in the middle;

[0035] Figure 12 This is a three-dimensional structural diagram of the ratchet, the first pawl, and the second pawl provided in an embodiment of the present invention.

[0036] Reference numerals: 1. Conveying mechanism; 101. Conveyor frame; 102. First rotary motor; 103. Conveyor chain; 104. First cylinder; 105. First push plate; 2. Transfer and cooling mechanism; 201. Transfer frame; 202. First electric telescopic rod; 203. Movable crossbeam; 204. Second electric telescopic rod; 205. Gripper mounting plate; 206. Dual-axis cylinder; 207. Vertical gripper; 208. Cooling water tank; 209. Second cylinder; 210. Connecting plate; 211. Support Frame; 2111, Support section; 2112, Clearance section; 2113, Connecting section; 212, Air outlet duct; 2121, Air outlet; 213, Second rotary motor; 214, First gear; 215, Second gear; 216, Third gear; 217, Rotary joint; 218, Air inlet duct; 219, First support plate; 220, Second support plate; 221, Infrared transmitter; 222, Infrared receiver; 3, Sawing mechanism; 301, Vertical band saw; 302, Saw blade; 303 1. Moving plate; 304. Third cylinder; 305. Clamping block; 306. Third support plate; 307. Third rotary motor; 308. Slide rod; 4. Transfer mechanism; 401. Truss; 402. Fourth rotary motor; 403. Rotating frame; 404. Fourth cylinder; 5. Grinding and polishing mechanism; 501. Polishing tank; 502. First robotic arm; 503. Fifth rotary motor; 504. Turning spindle; 505. Sixth rotary motor; 6. Marking mechanism; 601. Marking table; 60 2. Hydraulic cylinder; 603. Lifting platform; 604. Support platform; 605. Positioning frame; 606. Positioning through slot; 607. Fifth cylinder; 608. Second push plate; 609. Fourth support plate; 610. Horizontal printing number machine; 611. Ratchet; 612. First pawl; 613. Swing rod; 614. Fixed rod; 615. Tension spring; 616. Limiting post; 617. Fixed marking head; 618. Second pawl; 619. Second robotic arm; 620. Fixed platform; 7. Silver ingot. Detailed Implementation

[0037] To make the objectives, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] 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 invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Please see Figure 1 This invention provides a continuous multi-station post-processing device for silver ingots, comprising:

[0040] Conveying mechanism 1, which is used to receive and buffer the silver ingots obtained from casting;

[0041] The transfer and cooling mechanism 2 includes a cooling water tank 208. The transfer and cooling mechanism 2 is used to transfer the silver ingots 7 buffered on the conveying mechanism 1 into the cooling water tank 208, and at the same time transfer the silver ingots 7 in the cooling water tank 208 out.

[0042] The sawing mechanism 3 is used to saw the end of the silver ingot 7 after water cooling treatment.

[0043] Grinding and polishing mechanism 5, which is used to grind and / or polish the surface of silver ingot 7;

[0044] Transfer mechanism 4, which is used to transfer the sawn silver ingots 7 to the polishing mechanism 5;

[0045] Marking mechanism 6, which is used to mark the surface of silver ingot 7;

[0046] In this embodiment, the silver ingot 7 can be a 15kg silver ingot or a 30kg silver ingot. The transfer and cooling mechanism 2 can cool at least two silver ingots 7 simultaneously, the sawing mechanism 3 can saw at least two silver ingots 7 simultaneously, and the grinding and polishing mechanism 5 can grind and / or polish at least two silver ingots 7; that is, the transfer and cooling mechanism 2 has at least two cooling stations, the sawing mechanism 3 has at least two sawing stations, and the grinding and polishing mechanism 5 has at least two grinding and polishing stations.

[0047] It should be noted that the sawing mechanism 3 is optional. Alternatively, the silver ingot 7 in the cooling water tank 208 can be directly transferred to the grinding and polishing mechanism 5, and the water-cooled grinding and polishing mechanism 5 can be directly ground and / or polished.

[0048] Please see Figure 1 and Figure 2The conveying mechanism 1 includes a conveyor frame 101, on which a first rotary motor 102 is mounted. The output end of the first rotary motor 102 is fixedly connected to a drive sprocket, which is driven by a driven sprocket via a conveyor chain 103. The conveyor chain 103 consists of a chain and square tubes, with the square tubes spaced apart on the chain. After the silver ingots 7 are cast, they fall onto the square tubes, allowing the conveyor chain 103 to convey the silver ingots 7 forward. First cylinders 104 are located on both sides of the middle of the conveyor chain 103. The output end of each first cylinder 104 is fixedly connected to a first push plate 105. When the silver ingots 7 are conveyed forward between the two first push plates 105, the telescopic ends of the first cylinders 104 extend, thereby causing the first push plates 105 on both sides of the conveyor frame 101 to move towards each other. The first push plates 105 act on the silver ingots 7, ensuring that each silver ingot 7 is centered on the conveyor chain 103.

[0049] Please see Figure 1 and Figure 3 The transfer and cooling mechanism 2 further includes a transfer frame 201, on which a movable crossbeam 203 is slidably fitted. One end of the movable crossbeam 203 is connected to the output end of a first electric telescopic rod 202, which is mounted on the transfer frame 201. Multiple sets of pneumatic gripper mechanisms are mounted on the transfer frame 201, arranged in pairs. Two pneumatic gripper mechanisms are used to clamp silver ingots 7 from the conveying mechanism 1 into the cooling water tank 208 and to clamp silver ingots 7 from the cooling water tank 208 onto the sawing mechanism 3. The pneumatic gripper mechanism includes a second electric telescopic rod 204, which is mounted on the movable crossbeam 203. A gripper mounting plate 205 is fixedly connected to the output end of the second electric telescopic rod 204. A dual-axis cylinder 206 is mounted on the gripper mounting plate 205, and a vertical gripper 207 is fixedly connected to the output end of the dual-axis cylinder 206. In addition, a guide rod is installed on the upper surface of the gripper mounting plate 205, and the guide rod slides in conjunction with the movable crossbeam 203; this facilitates smoother up-and-down movement of the gripper mounting plate 205. It is understandable that when one pneumatic gripper mechanism picks up a silver ingot 7 from the conveying mechanism 1, another pneumatic gripper mechanism picks up a silver ingot 7 located in the cooling water tank 208. During the process of transferring the silver ingot 7 buffered on the conveying mechanism 1 to the cooling water tank 208, the silver ingot 7 in the cooling water tank 208 is simultaneously transferred out, thereby improving the transfer efficiency of the silver ingot 7 and accelerating the post-processing cycle of the silver ingot 7. Furthermore, the transfer and cooling mechanism 2 facilitates the simultaneous transfer of multiple sets of pneumatic gripper mechanisms. When multiple sets of pneumatic gripper mechanisms simultaneously pick up multiple silver ingots 7, the transfer and cooling mechanism 2 can simultaneously transfer multiple silver ingots 7 from the conveying mechanism 1 to the cooling water tank 208 and simultaneously transfer multiple silver ingots 7 from the cooling water tank 208 to the sawing mechanism 3.

[0050] Please see Figures 3-6A second cylinder 209 is installed on the outer walls of both sides of the cooling water tank 208. A connecting plate 210 is fixedly connected to the output end of the second cylinder 209. A bracket 211 and two air outlet pipes 212 are provided inside the cooling water tank 208. The end of the connecting plate 210 away from the second cylinder 209 is connected to the bracket 211. Several air outlets 2121 facing the silver ingot 7 are spaced apart on the air outlet pipes 212. After the pneumatic gripper mechanism transfers the silver ingot 7 into the cooling water tank 208, the second cylinder 209 drives the bracket 211 to move upward through the connecting plate 210, so that the bracket 211 can receive the transferred silver ingot 7; then the second cylinder 209 drives the bracket 211 to move downward and immerse it in the cooling water. After the silver ingot 7 is water-cooled, the bracket 211 can move the silver ingot 7 upward and away from the cooling water. At this time, the air outlet 2121 on the air outlet pipe 212 blows air out towards the silver ingot 7 to dry the surface of the silver ingot 7.

[0051] In some preferred embodiments, the bracket 211 consists of a support portion 2111, a clearance portion 2112, and a connecting portion 2113. The clearance portion 2112 is U-shaped. The support portion 2111 supports the silver ingot 7. Both ends of the support portion 2111 are connected to the connecting portion 2113 through the clearance portion 2112. The air outlet pipe 212 is located directly above the clearance portion 2112. Therefore, the bracket 211 can move the silver ingot 7 to above the air outlet pipe 212 without interfering with it. A first driving mechanism is provided on the outer wall of the cooling water tank 208, which drives the air outlet pipe 212 to rotate. A sensing device is installed inside the cooling water tank 208. When the height of the silver ingot 7 is below the height of the air outlet 212, the air outlet 2121 emits air at an angle downwards. When the sensing device detects that the silver ingot 7 has moved above the air outlet 212, the air gripper mechanism clamps the silver ingot 7, and the first drive mechanism drives the air outlet 212 to rotate, causing the air outlet 2121 to switch from emitting air at an angle downwards to emitting air at an angle upwards. Therefore, when the bracket 211 moves the silver ingot 7 upwards, the air outlet 2121 emits air at an angle downwards, which facilitates drying the upper surface and sides of the silver ingot 7. When the silver ingot 7 moves above the air outlet 212, the air gripper mechanism clamps the silver ingot 7, and the bracket 211 no longer supports or obstructs the lower surface of the silver ingot 7. At the same time, the air outlet 2121 switches to emitting air at an angle upwards, which facilitates drying the lower surface of the silver ingot 7. This is beneficial for quickly and comprehensively drying the surface of the silver ingot 7, and helps to improve the cycle time of the post-processing stage of the silver ingot 7.

[0052] It should be noted that by setting the clearance part 2112, the bracket 211 can directly drive the silver ingot 7 to move above the air outlet pipe 212; therefore, even if the air outlet pipe 212 is arranged close to the silver ingot 7, it will not hinder the pneumatic gripper mechanism from holding the silver ingot 7.

[0053] For example, the sensing device includes an infrared emitter 221 and an infrared receiver 222 installed on the inner wall of the cooling water tank 208. When the pneumatic gripper mechanism holds the silver ingot 7, the silver ingot 7 is located between the infrared emitter 221 and the infrared receiver 222, so that the infrared receiver 222 cannot receive the infrared light emitted by the infrared emitter 221; when the infrared receiver 222 can receive the infrared light emitted by the infrared emitter 221, the air outlet 2121 emits air at an angle downward; when the infrared receiver 222 cannot receive the infrared light emitted by the infrared emitter 221, the first drive mechanism drives the air outlet 212 to rotate, so that the air outlet 2121 switches from emitting air at an angle downward to emitting air at an angle upward.

[0054] Specifically, the first drive mechanism includes a first support plate 219 and a second support plate 220 mounted on the transfer frame 201. A second rotary motor 213 is mounted on the first support plate 219. A first gear 214 is fixedly connected to the output end of the second rotary motor 213. An air outlet pipe 212 passes through the cooling water tank 208 and is rotatably connected to an air inlet pipe 218 via a rotary joint 217. The air inlet pipe 218 is mounted on the second support plate 220. A second gear 215 is mounted on the air outlet pipe 212 located outside the cooling water tank 208. The first gear 214 is meshed with one of the second gears 215 via a third gear 216. Thus, after the second rotary motor 213 drives the first gear 214 to rotate, it can drive the air outlet pipes 212 located on both sides of the silver ingot 7 to rotate in the opposite direction.

[0055] Please see Figure 1 and Figure 7The sawing mechanism 3 includes a vertical band saw 301, on which a saw blade 302 is mounted. The vertical band saw 301 is a machine tool for cutting metal or non-metal materials. Its core working principle is to achieve straight or curved cutting through the continuous unidirectional movement of the annular saw blade. The vertical band saw 301 is an existing structure, and this application does not improve or innovate its specific structure. A third support plate 306 is mounted on the vertical band saw 301, and a third rotary motor 307 is mounted on the third support plate 306. A lead screw is fixedly connected to the output end of the third rotary motor 307. The middle part of the lead screw passes through and is threadedly connected to a slider on the lower surface of a moving plate 303. Sliding rods 308 are also provided on both sides of the lead screw, and the middle part of the sliding rods 308 passes through and slides with the slider on the lower surface of the moving plate 303. Furthermore, a clamping mechanism is mounted on the moving plate 303 to fix the transferred silver ingot 7. Therefore, after the third rotary motor 307 is started, the third rotary motor 307 drives the moving plate 303 to move forward, thereby moving the silver ingot 7 forward, so that the saw blade 302 can cut off the end of the silver ingot 7. The clamping mechanism includes a third cylinder 304 mounted on the moving plate 303, and a clamping block 305 is fixedly connected to the output end of the third cylinder 304. The number of clamping blocks 305 is set to two.

[0056] Please see Figure 1 and Figure 9The grinding and polishing mechanism 5 includes a polishing tank 501, a fifth rotary motor 503, a sixth rotary motor 505, and a first robotic arm 502. The fifth rotary motor 503 and the sixth rotary motor 505 are mounted on the outer wall of the polishing tank 501. The first robotic arm 502 is equipped with a grinding head and / or a polishing head. A first suction cup is fixedly connected to the output end of the sixth rotary motor 505. The first suction cup is used to hold the lower surface of the sawn silver ingot 7. A flipping spindle 504 is fixedly connected to the output end of the fifth rotary motor 503. A second suction cup is fixedly connected to the outer surface of the flipping spindle 504 through a connecting rod. The second suction cup is used to hold the side of the silver ingot 7 away from the first suction cup. When the first suction cup picks up the sawn silver ingot 7, the sixth rotary motor 505 drives the silver ingot 7 to rotate, changing it from a horizontal to a vertical position. This facilitates the grinding and / or polishing heads on the first robotic arm 502 to grind and / or polish the upper surface and four sides of the silver ingot 7. After the grinding and polishing of the upper surface and four sides of the silver ingot 7 is completed, the fifth rotary motor 503 drives the ingot-turning spindle 504 to rotate, allowing the second suction cup to flip onto the upper surface of the silver ingot 7 and pick it up. Then, the fifth rotary motor 503 drives the ingot-turning spindle 504 to rotate in the opposite direction, and the first suction cup stops picking up the silver ingot 7, allowing the silver ingot 7 to be flipped 180° and removed from the first suction cup. At this time, the grinding and / or polishing heads on the first robotic arm 502 can grind and / or polish the lower surface of the silver ingot 7, thus achieving all-round grinding and / or polishing of the silver ingot 7.

[0057] It should be noted that after the silver ingot 7 leaves the first suction cup, the first suction cup is left empty, and the transfer mechanism 4 can promptly transfer the next sawn silver ingot 7 to the first suction cup, which is beneficial to further improve the cycle time of the post-processing stage of the silver ingot 7.

[0058] Please see Figure 1 and Figure 8 The transfer mechanism 4 includes a truss 401. A fourth rotary motor 402 is mounted on the middle of the upper surface of the truss 401. A rotating frame 403 is fixedly connected to the output end of the fourth rotary motor 402. A fourth cylinder 404 is mounted on both ends of the rotating frame 403. A third suction cup is fixedly connected to the telescopic end of the fourth cylinder 404. It can be understood that when the third suction cup near the end of the rotating frame 403 near the sawing mechanism 3 adsorbs the sawn silver ingot 7, the fourth rotary motor 402 drives the rotating frame 403 to rotate 180°, which can transfer the silver ingot 7 adsorbed by the third suction cup precisely above the first suction cup. Meanwhile, the third suction cup near the end of the polishing mechanism 5 will rotate to be directly above the sawing mechanism 3 to adsorb the next sawn silver ingot 7.

[0059] Please see Figure 1 , Figures 10-12The marking mechanism 6 includes a marking table 601, on which a hydraulic cylinder 602 is mounted. The output end of the hydraulic cylinder 602 is fixedly connected to a lifting platform 603, which drives the horizontal printing number machine 610 and the ratchet 611 to move up and down. Specifically, two fourth support plates 609 are mounted on the lower surface of the lifting platform 603. The axle of the ratchet 611 is rotatably connected to the fourth support plate 609, and the outer surface of the ratchet 611 axle is also rotatably connected to one end of a swing arm 613. Specifically, one end of the swing arm 613 is mounted on the outer ring of a bearing, and the inner ring of the bearing is mounted on the axle of the ratchet 611. The end of the swing arm 613 away from the axle of the ratchet 611 is rotatably connected to a first pawl 612 and fixedly connected to a fixing rod 614, and a torsion spring is provided at the rotatable connection between the first pawl 612 and the swing arm 613. The fixing rod 614 hooks one end of the tension spring 615, and the other end of the tension spring 615 is fixed to the lifting platform 603. A limiting post 616 is also provided on the marking platform 601. The limiting post 616 is L-shaped, and the end of the limiting post 616 away from the marking platform 601 is used to abut against the upper surface of the fixing rod 614. A protruding block is also installed on one of the fourth support plates 609. A second pawl 618 is rotatably connected to the protruding block, and a torsion spring is provided at the rotatable connection between the second pawl 618 and the protruding block. When the lifting platform 603 moves upward, the limiting post 616 will prevent the fixed rod 614 from moving upward with the lifting platform 603, which is equivalent to the limiting post 616 driving the fixed rod 614 to rotate downward; causing the first pawl 612 to drive the ratchet 611 to rotate downward, and causing the corresponding unit digit wheel of the horizontal printing number machine 610 to automatically rotate one position and stretch the tension spring 615; when the lifting platform 603 moves downward, on the one hand, it can drive the horizontal printing number machine 610 after code change to contact the silver ingot 7; on the other hand, under the reset action of the tension spring 615, the swing arm 613 drives the first pawl 612 to move to engage with the next tooth on the ratchet 611; during the sliding process of the first pawl 612 relative to the surface of the ratchet 611, the second pawl 618 is used to prevent the ratchet 611 from reversing, ensuring that during the upward movement of the lifting platform 603, the corresponding unit digit wheel of the horizontal printing number machine 610 will not automatically rotate one position. Therefore, through the cooperation of the horizontal printing number machine 610, ratchet 611, first pawl 612, swing arm 613, fixed rod 614, tension spring 615, limit post 616 and second pawl 618, when the horizontal printing number machine 610 prints a number on the silver ingot 7 and moves upward with the lifting platform 603, the code can be changed automatically without additional operation, which further helps to improve the cycle time of the post-processing stage of the silver ingot 7.

[0060] It should be noted that after rotating the horizontal printing number machine 610, the corresponding unit number wheel of the horizontal printing number machine 610 can automatically rotate one position. The horizontal printing number machine 610 is an existing structure, and this application does not improve or innovate the specific structure of the horizontal printing number machine 610.

[0061] Preferably, the marking mechanism 6 further includes a positioning frame 605, the side of which slides in conjunction with the fixed platform 620. A positioning slot 606 is provided on the positioning frame 605. A fifth cylinder 607 is mounted on the fixed platform 620 located at the positioning slot 606. A second push plate 608 is fixedly connected to the output end of the fifth cylinder 607. The positioning slot 606 can move directly below the lifting platform 603 under the action of the second drive mechanism. The second drive mechanism can be a cylinder or an electric telescopic rod.

[0062] The marking table 601 is also equipped with a support platform 604 that is flush with the height of the fixed platform 620. When the positioning slot 606 moves to the underside of the lifting platform 603, the positioning slot 606 is exactly above the support platform 604. In addition, a fixed marking head 617 is also installed on the lower surface of the lifting platform 603. The fixed marking head 617 is used to print fixed text or numbers on the silver ingot 7.

[0063] To transfer the polished silver ingot 7 into the positioning slot 606 on the positioning frame 605, the present invention also includes a second robotic arm 619. When the silver ingot 7 is transferred into the positioning slot 606, the telescopic end of the fifth cylinder 607 extends, thereby driving the second push plate 608 to act on the silver ingot 7, so that the side of the silver ingot 7 in the width direction fits against the side wall of the positioning slot 606; in addition, during the process of the positioning frame 605 transferring the silver ingot 7 to the support platform 604, the side wall of the positioning slot 606 will fit against the side of the silver ingot 7 in the length direction, thereby achieving precise positioning of the silver ingot 7 in the positioning slot 606.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0065] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0066] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent 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. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0067] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A continuous multi-station post-processing device for silver ingots, characterized in that, include: The conveying mechanism (1) is used to receive and buffer the silver ingots (7) obtained from casting. The transfer and cooling mechanism (2) includes a cooling water tank (208). The transfer and cooling mechanism (2) is used to transfer the silver ingots (7) buffered on the conveying mechanism (1) into the cooling water tank (208) and at the same time transfer the silver ingots (7) in the cooling water tank (208) out. A grinding and polishing mechanism (5) is used to grind and / or polish the surface of the silver ingot (7); A marking mechanism (6) is used to mark the surface of a silver ingot (7); Among them, the transfer and cooling mechanism (2) can cool at least two silver ingots (7) at the same time, and the grinding and polishing mechanism (5) can grind or / and polish at least two silver ingots (7). The transfer and cooling mechanism (2) also includes a transfer frame (201), on which a movable crossbeam (203) is slidably fitted. One end of the movable crossbeam (203) is connected to the output end of the first electric telescopic rod (202). Multiple sets of pneumatic gripper mechanisms are installed on the transfer frame (201). The pneumatic gripper mechanisms are in pairs. The two pneumatic gripper mechanisms are used to clamp the silver ingots (7) on the conveying mechanism (1) into the cooling water tank (208) and to transfer the silver ingots (7) in the cooling water tank (208) out. The cooling water tank (208) has a second cylinder (209) installed on the outer walls of both sides. The output end of the second cylinder (209) is fixedly connected to a connecting plate (210). The cooling water tank (208) is provided with a bracket (211) and two air outlet pipes (212). The end of the connecting plate (210) away from the second cylinder (209) is connected to the bracket (211). The air outlet pipes (212) are provided with several air outlets (2121) spaced apart and facing the silver ingot (7). The bracket (211) consists of a support part (2111), a clearance part (2112), and a connecting part (2113). The clearance part (2112) is U-shaped. The support part (2111) is used to support the silver ingot (7). The two ends of the support part (2111) are connected to the connecting part (2113) through the clearance part (2112). The air outlet pipe (212) is located directly above the clearance part (2112). A first driving mechanism is provided on the outer wall of the cooling water tank (208). The first driving mechanism is used to drive the air outlet pipe (212) to rotate so that when the height position of the silver ingot (7) is below the height position of the air outlet pipe (212), the air outlet (2121) discharges air obliquely downward. When the air gripper mechanism clamps the silver ingot (7), the air outlet (2121) discharges air obliquely upward. An infrared transmitter (221) and an infrared receiver (222) are installed on the inner wall of the cooling water tank (208). When the pneumatic gripper holds the silver ingot (7), the silver ingot (7) is located between the infrared transmitter (221) and the infrared receiver (222), so that the infrared receiver (222) cannot receive the infrared light emitted by the infrared transmitter (221). When the infrared receiver (222) can receive the infrared light emitted by the infrared transmitter (221), the air outlet (2121) emits air at an angle downward. When the infrared receiver (222) cannot receive the infrared light emitted by the infrared transmitter (221), the air outlet (2121) emits air at an angle upward.

2. The continuous multi-station post-processing device for silver ingots according to claim 1, characterized in that: The conveying mechanism (1) includes a conveying chain (103), which is composed of a chain and square tubes. The square tubes are spaced apart on the chain. The chain conveys the square tubes forward under the action of the first rotating motor (102). A first cylinder (104) is provided on both sides of the middle part of the conveying chain (103). A first push plate (105) is fixedly connected to the output end of the first cylinder (104).

3. The continuous multi-station post-processing device for silver ingots according to claim 1, characterized in that: The pneumatic gripper mechanism includes a second electric telescopic rod (204), which is mounted on a movable crossbeam (203). The output end of the second electric telescopic rod (204) is fixedly connected to a gripper mounting plate (205). A dual-axis cylinder (206) is mounted on the gripper mounting plate (205), and a vertical gripper (207) is fixedly connected to the output end of the dual-axis cylinder (206).

4. The continuous multi-station post-processing device for silver ingots according to claim 1, characterized in that: The marking mechanism (6) includes a marking table (601), on which a hydraulic cylinder (602) is mounted. The output end of the hydraulic cylinder (602) is fixedly connected to a lifting platform (603). The lifting platform (603) is used to drive the horizontal printing number machine (610) and the ratchet (611) to move up and down. The axle of the ratchet (611) is rotatably connected to the lower surface of the lifting platform (603), and the outer surface of the ratchet (611) axle is also rotatably connected to one end of a swing rod (613). The end of the swing rod (613) away from the ratchet (611) axle is rotatably connected to a first pawl (612) and a fixed rod (614). 614) hooks one end of the tension spring (615), the other end of the tension spring (615) is fixed on the lifting platform (603), and the marking platform (601) is also provided with a limiting post (616) for abutting against the upper surface of the fixed rod (614) and a second pawl (618) is rotatably connected to the lifting platform (603); when the lifting platform (603) moves upward, the limiting post (616) drives the fixed rod (614) to rotate downward; so that the first pawl (612) drives the ratchet (611) to rotate downward, and drives the corresponding unit wheel of the horizontal printing number machine (610) to automatically rotate one position, and the second pawl (618) is used to prevent the ratchet (611) from reversing.

5. The continuous multi-station post-processing device for silver ingots according to claim 4, characterized in that: The marking mechanism (6) also includes a positioning frame (605) and a fixed platform (620). The side of the positioning frame (605) is slidably engaged with the fixed platform (620). A positioning through groove (606) is provided on the positioning frame (605). A fifth cylinder (607) is installed on the fixed platform (620) located at the positioning through groove (606). A second push plate (608) is fixedly connected to the output end of the fifth cylinder (607). The positioning through groove (606) can move to the bottom of the lifting platform (603) under the action of the second driving mechanism.

6. The continuous multi-station post-processing device for silver ingots according to claim 1, characterized in that: The grinding and polishing mechanism (5) includes a fifth rotary motor (503) and a sixth rotary motor (505). The output end of the sixth rotary motor (505) is fixedly connected to a first suction cup, which is used to hold the silver ingot (7). The output end of the fifth rotary motor (503) is fixedly connected to a flipping spindle (504). The outer surface of the flipping spindle (504) is fixedly connected to a second suction cup via a connecting rod, which is used to hold the side of the silver ingot (7) away from the first suction cup.

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