A pop can unstacking and screening device

Abstract

The application discloses a pop can unstacking and screening device, and relates to the technical field of pop can filling assembly lines. The device comprises an unstacking machine body, a conveying belt arranged on one side of the top of the unstacking machine body, a plurality of shunt plates arranged on the conveying belt, a screening plate arranged at the connection of two adjacent conveying belts and provided with a discharging hole, a pair of receiving plates rotatably connected to the discharging hole, a shunt plate provided with an intercepting assembly for intercepting pop cans, a screening frame arranged directly above the screening plate and provided with a plurality of second telescopic cylinders, an installation horizontal plate fixedly arranged on the second telescopic cylinders, and a pressing column fixedly arranged on the installation horizontal plate. An ejection frame is arranged on the installation horizontal plate and provided with a third telescopic cylinder. A detection assembly is arranged in the pressing column and configured to make the piston rod of the corresponding third telescopic cylinder extend when a pop can is protruded on the inner wall of the pop can. The third telescopic cylinder is provided with an ejection assembly for ejecting the pop can. The application has the effect of improving the online detection and removal efficiency of empty pop cans.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of zip-top can filling production line, in particular to a zip-top can unstacking and screening device. BACKGROUND

[0002] Zip-top cans are often used for filling beer, soda and other drinks as a sealed container.

[0003] The process of zip-top can filling needs to go through the processes of forming, painting, stacking, transporting, unstacking, screening, filling and packaging, and finally product stacking. If the zip-top cans are purchased as semi-finished products, the unstacking process will be directly started.

[0004] After unstacking, the zip-top cans will generally be screened. During the screening process, zip-top cans with damaged and bent outer surfaces and zip-top cans placed upside down need to be picked out. This step will use zip-top can unstacking and stacking equipment or unstacking equipment to unstack and disperse the zip-top cans on the conveyor belt. Since damaged zip-top cans are difficult to pick out by sensors and equipment, workers need to manually screen the zip-top cans on both sides of the conveyor belt. Although the rate of defective products is low, manual screening is difficult to achieve uninterrupted and efficient screening due to the large number of zip-top cans.

[0005] The outer profile of the zip-top cans can be recognized by an infrared sensor in the sensor, but it is difficult for zip-top cans that are close together to quickly pass through the recognition position and rotate to cooperate with the recognition. Therefore, the efficiency of automatic screening is also relatively low, and the screening speed is difficult to match the unstacking speed. Only by increasing the screening line can the speed be matched. However, this will increase the space occupied and the cost, which is not as good as manual screening. SUMMARY

[0006] In order to improve the low efficiency of screening defective products after unstacking empty zip-top cans, the present application provides a zip-top can unstacking and screening device.

[0007] The zip-top can unstacking and screening device provided by the present application adopts the following technical scheme:

[0008] A zip-top can unstacking and screening device comprises

[0009] The unstacking machine body is provided with a conveyor belt on one side of the top. The mechanical push handle of the unstacking machine body can push a layer of zip-top cans onto the conveyor belt. Guard plates are arranged on both sides of the conveyor belt.

[0010] The shunt plates are arranged on the conveyor belt and are spaced apart by a distance that is only sufficient for one zip-top can to pass through.

[0011] The screening plate is located at the connection between two adjacent conveyor belts and is used to place a row of zip-top cans. The upper surface of the screening plate is provided with a discharge hole for the zip-top cans to pass through at a position between the shunt plates.

[0012] The receiving plate is a pair of plates rotatably connected at the discharging hole, and torsion springs are arranged at the rotating shafts to keep the receiving plate horizontal;

[0013] Intercepting grooves are formed at the ends of the two side walls of the shaker plate, and intercepting plates are rotatably connected in the intercepting grooves, and torsion springs are arranged at the rotating shafts of the intercepting plates to keep the intercepting plates vertical;

[0014] The intercepting frame is arranged above the shaker plate and is provided with a first telescopic cylinder, and a lower pressing plate is fixedly arranged at the bottom of the piston rod of the first telescopic cylinder, and the lower pressing plate can abut against the intercepting plate and will not hinder the normal passing of the pull-tab cans during the downward movement of the lower pressing plate;

[0015] The shaker frame is arranged directly above the shaker plate and is provided with a plurality of second telescopic cylinders, and the piston rods of the second telescopic cylinders are downwardly arranged and are fixedly provided with a mounting horizontal plate, and a lower pressing column is fixedly arranged at the position of the lower surface of the mounting horizontal plate, which is opposite to the position of the discharging hole, and the lower pressing column can extend into the pull-tab can and move to the inner bottom wall of the pull-tab can;

[0016] The ejecting frame is arranged on the upper surface of the mounting horizontal plate and is located directly above the lower pressing column, and is provided with a third telescopic cylinder, and the piston rod of the third telescopic cylinder is downwardly arranged and is fixedly provided with an ejecting disc, and a plurality of ejecting plates are fixedly arranged at the edge of the bottom of the ejecting disc, and the ejecting plates abut against the circumferential outer wall of the lower pressing column;

[0017] The separation plate is arranged on the two sides of the intercepting frame and is located above the pull-tab can, and the separation plate can abut against the circumferential side wall of the lower pressing column;

[0018] The lower pressing column is provided with a detection assembly which can make the corresponding piston rod of the third telescopic cylinder extend out when the inner wall of the pull-tab can is protruded.

[0019] Optionally, an intercepting spring is fixedly arranged at the inner bottom wall of the intercepting groove, the top end of the intercepting spring is fixedly connected with the bottom end of the lower pressing plate, and the intercepting spring is a compression spring.

[0020] Optionally, the detection assembly comprises a detection group and a triggering group;

[0021] The detection group comprises a detection arc plate, a detection rod and a detection disc;

[0022] A receiving cavity is formed in the lower surface of the lower pressing column, a first sliding groove is formed in the middle position of the inner top wall of the receiving cavity, a limiting cavity is formed in the inner top wall of the first sliding groove, the detection rod is slidably connected with the first sliding groove, the top end of the detection rod is located in the limiting cavity and is fixedly provided with a limiting plate, a first spring is fixedly arranged at the top of the limiting plate, and the top end of the first spring abuts against the inner top wall of the limiting cavity;

[0023] The detection disc is fixed on the detection rod and located in the receiving cavity, the detection arc plates are a plurality of and rotationally connected to the circumferential outer wall of the detection disc, the bottoms thereof extend out of the receiving cavity and bend outward, and the bottoms of the detection arc plates are fixed with extension arc plates on both sides thereof for abutting against the inner wall of the pull-ring can;

[0024] The bottom plate is fixed to the bottom end of the detection rod, the linkage disc is slidably connected between the bottom plate and the detection disc, the second spring is fixed to the bottom of the linkage disc, the bottom end of the second spring is fixedly connected to the bottom plate, the up-tilted linkage disc is fixed to the circumferential side wall of the linkage disc, and the rotating shaft of the detection arc plate is provided with the torsion spring for pressing the linkage disc;

[0025] The inner wall of the receiving cavity is provided with the trigger hole, the trigger plate is slidably connected in the trigger hole, the trigger plate is provided with the spring for protruding the one end of the trigger plate out of the trigger hole, the protruding part of the trigger plate is provided with the circular arc transition, and the length of the trigger plate is the same as that of the trigger hole;

[0026] The detection disc is provided with the unlocking slot at the position opposite to the trigger hole in the circumferential outer wall, the unlocking block is slidably connected in the unlocking slot, the spring is arranged in the unlocking slot, the unlocking block can be located in the unlocking slot and the trigger hole at the same time when the unlocking slot is opposite to the trigger hole, the first spring is in the compressed state at this time, the bottom end of the detection arc plate is rotated to the position not exceeding the outer diameter range of the pressing column, and the elasticity of the compressed first spring is insufficient to drive the material receiving plate to rotate;

[0027] The trigger group comprises the trigger column, the first vertical plate and the second vertical plate;

[0028] The pressing column is provided with the trigger cavity vertically slidably arranged in the trigger column above the limiting cavity, the third spring is fixed to the bottom wall in the trigger cavity, the top end of the third spring is fixedly connected to the trigger column, the first vertical hole is arranged in the bottom wall of the trigger cavity and communicates with the receiving cavity, the first vertical plate is fixed to the bottom of the pressing column and slidably connected to the first vertical hole, the clamping groove is arranged in the bottom of the side wall of the first vertical plate, the clamping block is arranged in the top of the detection arc plate and bent to the first vertical plate, the bottom of the detection arc plate abuts against the inner wall of the pull-ring can when the clamping block is located in the clamping groove;

[0029] The second vertical hole is arranged on the position between the first vertical holes of the bottom wall in the trigger cavity, the second vertical plate is fixedly arranged at the bottom of the trigger column and is in sliding connection with the second vertical hole, the lower surface of the second vertical plate is provided with an insertion slot, the top of the insertion slot is provided with a fixing slot, the upper surface of the detection disc is provided with an extension slot at the position opposite to the insertion slot, the side of the extension slot facing the trigger hole is provided with a fixing hole capable of communicating with the trigger hole, a fixing block is in sliding connection in the fixing hole, the part of the fixing block located in the extension slot is fixedly provided with an insertion plate, the top of the insertion plate is fixedly provided with a fixing plate capable of being clamped in the fixing slot, the fixing block is provided with a spring in the extension slot, the spring can enable the fixing block to extend into the trigger hole and enable the fixing plate to be clamped in the fixing slot, and the trigger plate cannot continue to compress the spring of the trigger plate during the process that the pressing column extends out of the easy-open can.

[0030] The first trigger button is arranged on the top wall in the trigger cavity, and the trigger column can press the first trigger button when the trigger column is reset.

[0031] The second trigger button is arranged on the top wall in the limit cavity, and the limit plate presses the second trigger button when the unlocking block is located in the trigger hole.

[0032] If the time for the piston rod of the first telescopic cylinder to extend out by a length equal to the length of the easy-open can is Xs, the third telescopic cylinder will be moved only when the second trigger button is triggered within Xs after the first trigger button is triggered, and the piston rod of the third telescopic cylinder will drive the trigger column to move to the position where the fixing plate is located in the fixing slot during the process that the piston rod of the third telescopic cylinder extends out.

[0033] Optionally, the top of the pressing column is provided with a reset hole communicating with the trigger cavity, the lower surface of the pressing plate is fixedly provided with a reset rod in sliding connection with the reset hole, and the piston rod of the third telescopic cylinder extends to the position where the reset rod pushes the trigger column to the position where the fixing block is located in the fixing slot, and the ejecting rod completely ejects the easy-open can from the discharging hole.

[0034] Optionally, the trigger plate comprises a moving plate and a turnover plate.

[0035] The moving plate is in sliding connection in the trigger hole and is arranged with the spring, and the moving plate will not extend out of the trigger hole when the spring of the moving plate is in a natural state.

[0036] The end of the moving plate away from the storage cavity is provided with a turnover slot, the turnover plate is rotationally connected in the turnover slot and the rotation shaft is located at the position close to the top, the rotation shaft of the turnover plate is provided with a torsional spring enabling the rotation shaft to abut against the top wall in the turnover slot, the turnover plate is partially extended out of the trigger hole when the turnover plate is in a natural state, the bottom to the top of the part of the turnover plate extended out of the trigger hole is arranged in a circular arc transition, the turnover plate can be completely rotated into the turnover slot after the top of the turnover plate receives pressure, and the elastic force of the torsional spring of the turnover plate is smaller than the elastic force of the spring of the moving plate.

[0037] Optionally, the bottom of the trigger column is provided with a spring slot, and the top end of the third spring is fixedly connected with the top wall in the spring slot.

[0038] In summary, the present application includes at least one of the following beneficial technical effects:

[0039] The pull-tab cans are separated into groups on the conveying belt, and then the first telescopic cylinder drives the lower pressing plate to move downward, and then the lower pressing plate drives the intercepting plate to turn out to intercept the pull-tab cans, so that the pull-tab cans are stopped on the screening plate for screening;

[0040] After the second telescopic cylinder piston rod extends, the lower pressing column is driven to move downward and extend into the pull-tab can. In this process, the trigger plate is pressed and moved, so that the second vertical plate and the detection disc are unlocked. In the process of moving the first vertical plate upward, the detection arc plate clamps the block in the clamping groove, and then the position of the trigger column is fixed, and the detection of the inner wall of the pull-tab can is performed through the abutment between the detection arc plate and the extension arc plate and the inner wall of the pull-tab can;

[0041] When the extension arc plate and the detection arc plate abut against the protrusion of the inner wall of the pull-tab can, the extension arc plate is driven to rotate, and then the abutment relationship drives the linkage disc to move downward, and then the plurality of detection arc plates rotate together, the block is separated from the clamping groove, and then the trigger column is pressed upward to press the first trigger button. Subsequently, in the process of moving the bottom plate to the bottom end of the pull-tab can and pressing it into the lower pressing column, the unlocking block is located in the trigger hole. At this time, the second trigger button is pressed, the third telescopic cylinder piston rod extends, the pull-tab can is ejected from the discharging hole through the ejecting plate, and the trigger column is reset through the reset rod, so that the pull-tab can with a recessed side wall is screened out;

[0042] In the process of moving the lower pressing column upward, the turnover plate abuts against the necked portion at the top of the pull-tab can and rotates inward, so that it can be removed from the pull-tab can without driving the moving plate to move. In the process of moving the lower pressing column downward, the abutment between the turnover plate and the necked portion at the top of the pull-tab can drives the moving plate to slide, thereby improving the stability of the structure cycle;

[0043] The normal pull-tab cans will not trigger the first trigger button in the process of moving the lower pressing column downward, and then the third telescopic cylinder will not run. The reversed pull-tab cans are directly ejected downward by the bottom plate, so that the online automatic screening and rejection of the pull-tab cans are realized. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a structural schematic diagram of an embodiment of the present application;

[0045] Figure 2 is a partial schematic diagram showing the intercepting frame;

[0046] Figure 3 is a partial sectional view showing the intercepting assembly;

[0047] Figure 4 is a schematic diagram showing the state of the detection arc plate not being ejected;

[0048] Figure 5 isFigure 4 Figure 5 is a partial view showing the unlocking block position state;

[0049] Figure 6 Figure 6 is a partial sectional view showing the detection arc plate ejection state;

[0050] Figure 7 Figure 7 is a partial sectional view showing the trigger column after ejection;

[0051] Figure 8 Figure 8 is a partial sectional view showing the trigger plate;

[0052] Figure 9 Figure 9 is a partial sectional view showing the ejection assembly.

[0053] In the figure, 1, unstacker body; 11, conveying belt; 111, shunt plate; 1111, intercepting groove; 12, intercepting frame; 121, first telescopic cylinder; 122, downward pressing plate; 2, intercepting assembly; 21, intercepting plate; 22, downward pressing plate; 221, intercepting spring; 3, screening plate; 31, discharging hole; 32, material receiving plate; 4, screening frame; 41, second telescopic cylinder; 42, mounting horizontal plate; 421, ejection frame; 4211, third telescopic cylinder; 43, downward pressing column; 431, accommodating cavity; 4311, first sliding groove; 432, limiting cavity; 4321, second trigger knob; 433, trigger hole; 434, trigger cavity; 4341, first trigger knob; 4342, first vertical hole; 4343, second vertical hole; 435, reset hole; 44, separation plate; 5, detection assembly; 51, detection group; 511, detection arc plate; 5111, extended arc plate; 5112, clamping block; 512, detection rod; 5121, limiting plate; 5122, first spring; 5123, linkage disc; 5124, tilting plate; 5125, second spring; 5126, bottom plate; 513, detection disc; 5131, unlocking slot; 5132, unlocking block; 5133, extending slot; 5134, fixing hole; 5135, fixing block; 5136, insertion plate; 5137, fixing plate; 52, trigger group; 521, trigger column; 5211, third spring; 5212, spring groove; 522, first vertical plate; 5221, clamping groove; 523, second vertical plate; 5231, insertion groove; 5232, fixing groove; 6, ejection assembly; 61, ejection disc; 62, ejection plate; 63, reset rod; 7, trigger plate; 71, moving plate; 711, tilting slot; 72, tilting plate. DETAILED DESCRIPTION

[0054] The following will be described in detail with reference to the accompanying drawings. Figures 1-9 The application is further described in detail.

[0055] The application discloses an unstacking and screening device for a zip-top can.

[0056] Reference Figure 1And Figure 2 The can unstacking and screening device comprises an unstacking machine body 1, a conveying belt 11, a screening plate 3 and a screening frame 4.

[0057] Referring to Figure 2 And Figure 3 A conveying belt 11 is arranged on one side of the top of the unstacking machine body 1, and the mechanical push hand of the unstacking machine body 1 can push a layer of cans onto the conveying belt 11. Guard plates are arranged on both sides of the conveying belt 11. A plurality of shunt plates 111 are arranged above the conveying belt 11, the length direction of the shunt plates 111 is parallel to the moving direction of the conveying belt 11, and the distance between the shunt plates 111 is only enough for one can to pass through. The screening plate 3 is located at the connection between two adjacent conveying belts 11 and is used for placing a row of cans. A discharging hole 31 for the cans to pass through is arranged on the upper surface of the screening plate 3 at a position between the shunt plates 111. A stack of receiving plates 32 are rotatably connected in the discharging hole 31. A torsion spring is arranged at the rotating shaft of the receiving plate 32 to keep the receiving plate 32 in a horizontal state. A box for collecting waste cans is arranged below the screening plate 3. A blocking frame 12 is arranged above the screening plate 3 and close to the moving direction of the conveying belt 11. The blocking frame 12 is provided with a blocking assembly 2 for blocking the cans moving onto the screening plate 3. A screening frame 4 is arranged directly above the screening plate and is provided with a plurality of second telescopic cylinders 41. The piston rod of the second telescopic cylinder 41 is arranged downward and is fixedly provided with a mounting horizontal plate 42. A pressing column 43 is fixedly arranged on the lower surface of the mounting horizontal plate 42 and is located opposite the discharging hole 31. The pressing column 43 can be inserted into the can and moved to the inner bottom wall of the can. A ejection frame 421 is arranged on the mounting horizontal plate 42 and is located opposite the pressing column 43. The ejection frame 421 is provided with a third telescopic cylinder 4211. A detection assembly 5 is arranged in the pressing column 43 and is used for extending the piston rod of the corresponding third telescopic cylinder 4211 when the inner wall of the can is protruded. The third telescopic cylinder 4211 is provided with an ejection assembly 6 for ejecting the can below from the discharging hole 31 after the piston rod of the third telescopic cylinder 4211 is extended. Separation plates 44 are arranged on both sides of the blocking frame 12 and are located above the cans. The separation plates 44 can abut against the circumferential side wall of the pressing column 43.

[0058] After the empty cans are unstacked by the unstacking machine body 1 and moved onto the conveying belt 11, the empty cans are moved on the conveying belt 11 and are separated into a plurality of columns after abutting against the shunt plates 111. After the empty cans are moved onto the screening plate 3, the cans on the screening plate 3 are blocked by the blocking assembly 2. Then, the second telescopic cylinder 41 is moved downward. If the bottom of the can is upward, the can is ejected from the discharging hole 31 by the pressing column 43. If the inner part of the can is protruded, the third telescopic cylinder 4211 is controlled to move by the detection assembly 5 after detection, and the can is ejected from the discharging hole 31 by the ejection assembly 6. Thus, the online screening and rejection of the cans are realized.

[0059] Referring to Figure 3The intercepting assembly 2 comprises an intercepting plate 21 and a pressing plate 22. The two side walls of the shunt plate 111 are provided with intercepting grooves 1111 at the ends of the screening plate 3, and the intercepting plate 21 is rotationally connected in the intercepting grooves 1111. A torsion spring is arranged at the rotating shaft of the intercepting plate 21 to keep the intercepting plate 21 in an upright state. The pressing plate 22 is slidingly connected in the middle of the intercepting grooves 1111, and the bottom of the pressing plate 22 is provided with inclined surfaces, which can abut against the intercepting plate 21 and drive the intercepting plate 21 to rotate outward. The bottom wall of the intercepting grooves 1111 is fixedly provided with an intercepting spring 221, the top end of the intercepting spring 221 is fixedly connected with the bottom end of the pressing plate 22, and the intercepting spring 221 is a compression spring. When the intercepting spring 221 is in a natural state, the pressing plate 22 will not abut against the intercepting plate 21. The intercepting frame 12 is provided with a first telescopic cylinder 121, and the bottom of the piston rod of the first telescopic cylinder 121 is fixedly provided with a pressing strip plate 122. The pressing strip plate 122 will abut against the pressing plate 22 during downward movement and will not block the normal passing of the pull-tab cans. The first telescopic cylinder 121 moves intermittently and cyclically, so that the intercepting plate 21 continuously extends to intercept different pull-tab cans on the screening plate 3.

[0060] Reference Figures 4 to 8 The detection assembly 51 comprises a detection assembly 51 and a triggering assembly 52. The detection assembly 51 comprises a detection arc plate 511, a detection rod 512 and a detection disc 513. The lower surface of the pressing column 43 is provided with a receiving cavity 431, the top wall of the receiving cavity 431 is provided with a first sliding groove 4311 at the middle position, and the top wall of the first sliding groove 4311 is provided with a limiting cavity 432. The detection rod 512 is slidingly connected with the first sliding groove 4311, the top end of the detection rod 512 is located in the limiting cavity 432 and is fixedly provided with a limiting plate 5121, the top of the limiting plate 5121 is fixedly provided with a first spring 5122, and the top end of the first spring 5122 abuts against the top wall of the limiting cavity 432. The detection disc 513 is fixedly provided on the detection rod 512 and located in the receiving cavity 431. The detection arc plate 511 is a plurality of arc plates, which are rotationally connected on the circumferential outer wall of the detection disc 513. In this embodiment, the detection arc plate 511 is four and is distributed at equal intervals in a circle. The bottom of the detection arc plate 511 extends out of the receiving cavity 431 and curves outward, and the two sides of the bottom of the detection arc plate 511 are fixedly provided with extension arc plates 5111 for abutting against the inner wall of the pull-tab can. The bottom end of the detection rod 512 is fixedly provided with a bottom plate 5126, and the detection rod 512 is slidingly connected with a linkage disc 5123 between the bottom plate 5126 and the detection disc 513. The linkage disc 5123 is fixedly provided with a second spring 5125 at the bottom, and the bottom end of the second spring 5125 is fixedly connected with the bottom plate 5126. The linkage disc 5123 is fixedly provided with an upwardly inclined upturned plate 5124 on the circumferential side wall, and the rotating shaft of the detection arc plate 511 is provided with a torsion spring for pressing the upturned plate 5124. The torsion spring of the detection arc plate 511 has a smaller elastic force than the elastic force of the second spring 5125.

[0061] The inner wall of the accommodation cavity 431 is provided with a trigger hole 433, and a trigger plate 7 is slidably connected in the trigger hole 433. The trigger plate 7 is provided with a spring that protrudes from one end of the trigger hole 433 away from the accommodation cavity 431, and the portion of the trigger plate 7 protruding from the trigger hole 433 is provided in a circular arc transition, and the length of the trigger plate 7 is the same as the length of the trigger hole 433. The trigger plate 7 includes a moving plate 71 and a turnover plate 72. The moving plate 71 is slidably connected in the trigger hole 433 and is mounted with a spring, and the spring of the moving plate 71 does not protrude the moving plate 71 from the trigger hole 433 when in a natural state. The end of the moving plate 71 away from the accommodation cavity 431 is provided with a turnover groove 711, and the turnover plate 72 is rotatably connected in the turnover groove 711 with the rotation axis located near the top. The rotation axis of the turnover plate 72 is provided with a torsion spring that abuts against the top wall in the turnover groove 711. When in a natural state, the turnover plate 72 partially protrudes from the trigger hole 433, and the portion of the turnover plate 72 protruding from the trigger hole 433 is provided in a circular arc transition from the bottom to the top. After the top of the turnover plate 72 receives pressure, it can be completely rotated into the turnover groove 711, and the elastic force of the torsion spring of the turnover plate 72 is smaller than the elastic force of the spring of the moving plate 71.

[0062] The circumferential outer wall of the detection disc 513 is provided at a position opposite to the trigger hole 433 and is provided with an unlocking groove 5131. An unlocking block 5132 is slidably connected in the unlocking groove 5131, and a spring is mounted in the unlocking groove 5131 so that when the unlocking groove 5131 is opposite to the trigger hole 433, the unlocking block 5132 can be located in the unlocking groove 5131 and the trigger hole 433 at the same time. At this time, the first spring 5122 is in a compressed state, the bottom end of the detection arc plate 511 is rotated to a position not exceeding the outer diameter of the lower pressing column 43, and the elasticity of the compressed first spring 5122 is insufficient to drive the material receiving plate 32 to rotate.

[0063] The trigger group 52 comprises a trigger column 521, a first vertical plate 522 and a second vertical plate 523. The pressing column 43 is provided with a trigger cavity 434 above the limiting cavity 432 for the vertical sliding of the trigger column 521, and a third spring 5211 is fixedly arranged on the bottom wall of the trigger cavity 434. The bottom of the trigger column 521 is provided with a spring groove 5212, and the top end of the third spring 5211 is fixedly connected with the inner top wall of the spring groove 5212. The bottom wall of the trigger cavity 434 is provided with a first vertical hole 4342 communicating with the storage cavity 431 opposite to the position of the detection arc plate 511, and the first vertical plate 522 is fixedly arranged on the bottom of the pressing column 43 and is in sliding connection with the first vertical hole 4342. The side wall of the first vertical plate 522 is provided with a clamping groove 5221, and the top of the detection arc plate 511 is bent towards the first vertical plate 522 as a clamping block 5112, which is always in abutment with the first vertical plate 522. When the clamping block 5112 is located in the clamping groove 5221, the bottom of the detection arc plate 511 can abut against the inner wall of the pull-tab can. The bottom wall of the trigger cavity 434 is provided with a second vertical hole 4343 between the first vertical holes 4342, and the second vertical plate 523 is fixedly arranged on the bottom of the trigger column 521 and is in sliding connection with the second vertical hole 4343. The lower surface of the second vertical plate 523 is provided with an insertion groove 5231, and the top of the insertion groove 5231 is provided with a fixing groove 5232. The upper surface of the detection disc 513 is provided with an extension groove 5133 opposite to the position of the insertion groove 5231, and the side of the extension groove 5133 facing the trigger hole 433 is provided with a fixing hole 5134 capable of communicating with the trigger hole 433. The fixing hole 5134 is in sliding connection with a fixing block 5135, and the part of the fixing block 5135 located in the extension groove 5133 is fixedly provided with an insertion plate 5136, and the top of the insertion plate 5136 is fixedly provided with a fixing plate 5137 capable of being clamped in the fixing groove 5232. The fixing block 5135 is provided with a spring in the extension groove 5133, which can extend into the trigger hole 433 and make the fixing plate 5137 clamped in the fixing groove 5232. The trigger plate 7 will not continue to compress its spring during the process of the pressing column 43 extending out of the pull-tab can.

[0064] The top wall of the trigger cavity 434 is mounted with a first trigger button 4341, which can be pressed when the trigger column 521 is popped and reset. The top wall of the limiting cavity 432 is mounted with a second trigger button 4321, which is pressed by the limiting plate 5121 when the unlocking block 5132 is located in the trigger hole 433. If the time for the piston rod of the first telescopic cylinder 121 to extend out by the same length as the pull-tab can is Xs, the third telescopic cylinder 4211 will be moved only when the second trigger button 4321 is triggered within Xs after the first trigger button 4341 is triggered, and the piston rod of the third telescopic cylinder 4211 will move the trigger column 521 to the position where the fixing plate 5137 is located in the fixing groove 5232 during the extension process.

[0065] The lower pressing column 43 moves downward into the pop can, the top edge of the pop can abuts against the turnover plate 72 and presses the moving plate 71, so that the moving plate 71 moves, the unlocking block 5132 and the fixing block 5135 are ejected from the trigger hole 433, and then the detection disc 513 and the trigger column 521 are unlocked at the same time, the trigger column 521 moves upward, and the detection rod 512 moves downward. In this process, the detection arc plate 511 extends out and abuts against the inner wall of the pop can, the clamping block 5112 is clamped in the clamping groove 5221 to re-fix the position of the trigger column 521. In the process of the lower pressing column 43 continuing to move downward, if there is a protrusion on the inner wall of the pop can, the detection arc plate 511 will be driven to rotate through the abutment with the extension arc plate 5111, and then the linkage disc 5123 will be pressed downward through the rocker plate 5124, so that the plurality of detection arc plates 511 rotate at the same angle, and then the clamping block 5112 is separated from the clamping groove 5221. The trigger column 521 is unlocked and pops up and presses the first trigger button 4341, and then the lower pressing column 43 moves downward to the bottom plate 5126 abutting against the inner bottom wall of the pop can, and drives the detection rod 512 to move upward to the position where the unlocking block 5132 is located in the trigger hole 433, which realizes the reset of the detection arc plate 511 on the one hand, and presses the second trigger button 4321 on the other hand. Only when the corresponding third telescopic cylinder 4211 is extended, the pop can below is ejected from the feeding hole 31 through the ejecting assembly 6 and drives the trigger column 521 to move to the position where the fixing plate 5137 is located in the fixing groove 5232. In the process of the pop can moving downward relative to the lower pressing column 43, the top edge of the pop can will abut against the turnover plate 72 from the top, and drive the turnover plate 72 to rotate into the turnover groove 711, without moving the moving plate 71, and then the fixing block 5135 and the unlocking block 5132 are ejected. In this way, the online detection and waste rejection of the pop can are effectively realized.

[0066] Reference Figure 9 The ejecting assembly 6 includes an ejecting disc 61, an ejecting rod and a reset rod 63. The ejecting disc 61 is fixedly arranged at the bottom end of the piston rod of the third telescopic cylinder 4211. The ejecting plate 62 is arranged at the bottom edge position of the ejecting disc 61 and is staggered with the position of the trigger hole 433. The ejecting plate 62 abuts against the circumferential outer wall of the lower pressing column 43, and the position of the lower pressing column 43 is staggered with the separation plate 44. The lower pressing column 43 is provided with a reset hole 435 communicated with the trigger cavity 434 at the top, and the position of the reset hole 435 is staggered with the first trigger button 4341. The reset rod 63 is fixedly arranged on the lower surface of the lower pressing plate 22, and the reset rod 63 is slidably connected with the reset hole 435. When the piston rod of the third telescopic cylinder 4211 extends to the reset rod 63 and ejects the trigger column 521 to the position where the fixing block 5135 is located in the fixing groove 5232, the ejecting rod completely ejects the pop can from the feeding hole 31.

[0067] When the third telescopic rod meets the extension condition, the piston rod of the corresponding third telescopic rod extends, the ejection rod ejects the can from the discharge hole 31, and the trigger column 521 is ejected to the position where the fixed plate 5137 is located in the fixed groove 5232 through the reset rod 63, the reset of the trigger column 521 is realized, and the action cycle is formed.

[0068] The implementation principle of the can unstacking and screening device is as follows: empty cans are transferred to the conveying belt 11 in layers on the unstacking machine body 1 and are arranged in order by the flow divider 111 during conveying, and when the empty cans are moved to the screening plate 3, the intercepting plate 21 is turned out by the extension of the first telescopic cylinder 121 to intercept the empty cans on the screening plate 3. Then, the second telescopic cylinder 41 drives the pressing column 43 to move downward, and in the process of the pressing column 43 extending into the empty can, the top edge of the empty can abuts against the turnover plate 72 and drives the moving plate 71 to move, the unlocking block 5132 and the fixed block 5135 are ejected, the detection rod 512 moves downward, and the trigger column 521 moves upward. In this process, the detection arc plate 511 extends and abuts against the side wall of the empty can through the bottom and the extended arc plate 5111. The clamping plate abuts against the first vertical plate 522 and is clamped in the clamping groove 5221 to fix the position of the trigger column 521. Then, in the process of the pressing column 43 moving downward, if there is a protrusion on the inner wall of the empty can, the detection arc plate 511 or the extended arc plate 5111 will abut against the protrusion and drive the detection arc plate 511 to rotate, the detection arc plate 511 drives the linkage disc 5123 to move downward through the abutment with the rocker plate 5124, and then drives a plurality of detection arc plates 511 to rotate together, so that the clamping block 5112 is separated from the clamping groove 5221, the trigger column 521 is popped up to trigger the first trigger button 4341, and then the pressing column 43 moves downward to the bottom plate 5126 to abut against the inner bottom wall of the empty can and drive the pressing column 43 to move upward to the position where the unlocking block 5132 is located in the trigger hole 433. At this time, the second trigger button 4321 is triggered, the corresponding third telescopic cylinder 4211 moves downward after meeting the condition, and the corresponding empty can is ejected downward through the ejecting plate 62. In this process, the turnover plate 72 abuts against the top edge of the empty can and turns into the turnover groove 711, and the moving plate 71 is not driven to slide; in this process, the reset rod 63 abuts against the trigger column 521 and drives the trigger column 521 to move to the position where the fixed plate 5137 is located in the fixed groove 5232 for fixation. If the empty can is intact and placed normally, the first trigger button 4341 will not be triggered, and the corresponding third telescopic cylinder 4211 will not be moved. If the empty can is placed upside down, it will be directly ejected by the bottom plate 5126. In this way, the online detection and rejection of empty cans can be conveniently realized, the subsequent empty cans can be repositioned on the conveying belt 11, and then the empty cans can be conveniently restacked or conveyed to the next link, thereby improving the efficiency of empty can detection and rejection.

[0069] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A can unloading and sorting device, characterized in that: include The depalletizer body (1) has a conveyor belt (11) mounted on one side of the top. The mechanical pusher of the depalletizer body (1) can push a layer of aluminum cans onto the conveyor belt (11). The conveyor belt (11) has guard plates on both sides. There are multiple diverter plates (111) mounted on the conveyor belt, and the distance between the diverter plates (111) is only enough for one can to pass through. The screening plate (3) is located at the connection of two adjacent conveyor belts (11) for placing a row of aluminum cans. The upper surface is provided with a discharge hole (31) for the aluminum cans to pass through at the position between the diversion plate (111). The receiving plates (32) are a pair and are rotatably connected to the feeding hole (31). A torsion spring is provided at the rotating shaft to keep itself in a horizontal state. The two sides of the diversion plate (111) are provided with interception grooves (1111) at the end of the screening plate (3). An interception plate (21) is rotatably connected in the interception groove (1111). A torsion spring is provided at the rotation axis of the interception plate (21) to keep itself in an upward vertical state. A lower pressure plate (22) is vertically slidably connected in the middle of the interception groove (1111). The bottom sides of the lower pressure plate (22) are inclined surfaces, which can abut against the interception plate (21) and drive the interception plate (21) to rotate outward. The interceptor (12) is mounted above the screening plate (3) and is equipped with a first telescopic cylinder (121). The piston rod of the first telescopic cylinder (121) is fixed with a lower pressure plate (122). During the downward movement of the lower pressure plate (122), it will abut against the lower pressure plate (22) and will not block the can from passing through normally. The screening rack (4) is set directly above the screening plate and is equipped with multiple second telescopic cylinders (41). The piston rod of the second telescopic cylinder (41) is set downward and fixed with a mounting plate (42). A pressing column (43) is fixed on the lower surface of the mounting plate (42) directly opposite the feeding hole (31). The pressing column (43) can just extend into the can and move to the inner bottom wall of the can. The ejector frame (421) is mounted on the upper surface of the mounting plate (42) and located directly above the lower pressure column (43). It is equipped with a third telescopic cylinder (4211). The piston rod of the third telescopic cylinder (4211) is set downward and fixed with an ejector plate (61). Multiple ejector plates (62) are fixed at the bottom edge of the ejector plate (61). The ejector plates (62) abut against the outer circumferential wall of the lower pressure column (43). Separation plate (44) is installed on both sides of interceptor (12) and located above the can. Separation plate (44) can abut against the circumferential side wall of the pressure column (43). The pressure column (43) is equipped with a detection assembly (51) that extends the piston rod of the corresponding third telescopic cylinder (4211) when the inner wall of the can bulges.

2. The can unloading and sorting device according to claim 1, characterized in that: An intercepting spring (221) is fixedly installed on the bottom wall of the intercepting groove (1111). The top end of the intercepting spring (221) is fixedly connected to the bottom end of the lower pressure plate (22). The intercepting spring (221) is a compression spring.

3. The can unloading and sorting device according to claim 1, characterized in that: The detection group (51) includes a detection group (51) and a trigger group (52); The detection group (51) includes a detection arc plate (511), a detection rod (512), and a detection disk (513); A storage cavity (431) is provided on the lower surface of the pressure column (43). A first sliding groove (4311) is provided in the middle of the top wall of the storage cavity (431). A limiting cavity (432) is provided in the top wall of the first sliding groove (4311). The detection rod (512) is slidably connected to the first sliding groove (4311). The top of the detection rod (512) is located in the limiting cavity (432) and a limiting plate (5121) is fixed thereon. A first spring (5122) is fixed on the top of the limiting plate (5121). The top of the first spring (5122) is pressed against the top wall of the limiting cavity (432). The detection plate (513) is fixed on the detection rod (512) and located in the storage cavity (431). There are multiple detection arc plates (511), which are rotatably connected to the circumferential outer wall of the detection plate (513). The bottom extends out of the storage cavity (431) and bends outward. Extended arc plates (5111) are fixed on both sides of the bottom of the detection arc plate (511) for contacting the inner wall of the can. A base plate (5126) is fixedly provided at the bottom end of the detection rod (512). A linkage plate (5123) is slidably connected between the detection rod (5122) and the detection plate (513). A second spring (5125) is fixedly provided at the bottom of the linkage plate (5123). The bottom end of the second spring (5125) is fixedly connected to the base plate (5126). An upwardly inclined rocker plate (5124) is fixedly provided on the circumferential side wall of the linkage plate (5123). A torsion spring is provided on the rotation shaft of the detection arc plate (511) to press itself against the upper rocker plate (5124). A trigger hole (433) is provided on the inner wall of the storage cavity (431). A trigger plate (7) is slidably connected in the trigger hole (433). A spring is installed on the trigger plate (7) so that it protrudes from the end of the trigger hole (433) away from the storage cavity (431). The part of the trigger plate (7) protruding from the trigger hole (433) is set with a rounded transition. The length of the trigger plate (7) is the same as the length of the trigger hole (433). The outer circumferential wall of the detection plate (513) extends to the position opposite to the trigger hole (433) and has an unlocking groove (5131). An unlocking block (5132) is slidably connected in the unlocking groove (5131). A spring is installed in the unlocking groove (5131) so that when the unlocking groove (5131) is opposite to the trigger hole (433), the unlocking block (5132) can be located in both the unlocking groove (5131) and the trigger hole (433) at the same time. At this time, the first spring (5122) is in a compressed state. The bottom end of the detection arc plate (511) rotates to a position not exceeding the outer diameter of the lower pressure column (43). The elasticity of the first spring (5122) after compression is insufficient to drive the receiving plate (32) to rotate. The trigger group (52) includes a trigger post (521), a first vertical plate (522), and a second vertical plate (523); The pressing column (43) has a trigger cavity (434) above the limiting cavity (432) for the trigger column (521) to slide vertically inside. A third spring (5211) is fixedly installed on the bottom wall of the trigger cavity (434). The top end of the third spring (5211) is fixedly connected to the trigger column (521). A first vertical hole (4342) communicating with the storage cavity (431) is opened on the bottom wall of the trigger cavity (434) directly opposite the detection arc plate (511). The first vertical plate (522) It is fixed at the bottom of the lower pressure column (43) and slidably connected to the first vertical hole (4342). The bottom of the side wall of the first vertical plate (522) is provided with a slot (5221). The top of the detection arc plate (511) is bent towards the first vertical plate (522) to form a block (5112). The block (5112) is always in contact with the first vertical plate (522). When the block (5112) is in the slot (5221), the bottom of the detection arc plate (511) can be in contact with the inner wall of the can. A second vertical hole (4343) is formed in the bottom wall of the trigger cavity (434) between the first vertical holes (4342). The second vertical plate (523) is fixed to the bottom of the trigger post (521) and slidably connected to the second vertical hole (4343). An insertion groove (5231) is formed on the lower surface of the second vertical plate (523), and a fixing groove (5232) is formed on the top of the insertion groove (5231). An extension groove (5133) is formed on the upper surface of the detection plate (513) opposite to the insertion groove (5231). A fixing hole (5133) is formed on the side of the extension groove (5133) facing the trigger hole (433) that can communicate with the trigger hole (433). 134), a fixing block (5135) is slidably connected in the fixing hole (5134), and an insertion plate (5136) is fixedly provided on the part of the fixing block (5135) located in the extension groove (5133). A fixing plate (5137) that can be locked in the fixing groove (5232) is fixedly provided on the top of the insertion plate (5136). The fixing block (5135) is provided with a spring in the extension groove (5133) that allows it to extend into the trigger hole (433) and lock the fixing plate (5137) in the fixing groove (5232). The trigger plate (7) will not continue to compress its own spring during the process of the pressing column (43) extending out of the can. A first trigger button (4341) is installed on the top wall of the trigger cavity (434). When the trigger post (521) pops out and resets, the first trigger button (4341) can be pressed. A second trigger button (4321) is installed on the top wall of the limiting cavity (432). When the unlocking block (5132) is located in the trigger hole (433), the limiting plate (5121) presses the second trigger button (4321). If the piston rod of the first telescopic cylinder (121) extends to the same length as the can for X seconds, then when the second trigger button (4321) is triggered within X seconds after the first trigger button (4341) is triggered, the corresponding third telescopic cylinder (4211) will move. During the extension of the piston rod of the third telescopic cylinder (4211), it will drive the trigger pin (521) to move to the position of the fixed plate (5137) located in the fixed groove (5232).

4. The can unloading and sorting device according to claim 3, characterized in that: The top of the pressure column (43) is provided with a reset hole (435) that communicates with the trigger chamber (434). The lower surface of the pressure plate (22) is fixed with a reset rod (63) that is slidably connected to the reset hole (435). When the piston rod of the third telescopic cylinder (4211) extends to the reset rod (63) and pushes the trigger column (521) to the position where the fixed block (5135) is located in the fixed groove (5232), the ejector rod pushes the can completely out of the feeding hole (31).

5. The can unloading and sorting device according to claim 3, characterized in that: The trigger plate (7) includes a movable plate (71) and a flip plate (72); The movable plate (71) is slidably connected in the trigger hole (433) and installed with the spring. When the spring of the movable plate (71) is in the natural state, the movable plate (71) will not extend out of the trigger hole (433). The movable plate (71) has a flip groove (711) at the end away from the storage cavity (431). The flip plate (72) is rotatably connected in the flip groove (711) and the rotation axis is located near the top. A torsion spring is provided at the rotation axis of the flip plate (72) to make itself press against the top wall of the flip groove (711). When the flip plate (72) is in the natural state, part of the flip plate (72) extends out of the trigger hole (433). The bottom to the top of the part of the flip plate (72) extending out of the trigger hole (433) is set with an arc transition. After the top of the flip plate (72) receives pressure, it can rotate completely into the flip groove (711). The elastic force of the torsion spring of the flip plate (72) is less than the elastic force of the spring of the movable plate (71).

6. The can unloading and sorting device according to claim 3, characterized in that: The bottom of the trigger post (521) is provided with a spring groove (5212), and the top of the third spring (5211) is fixedly connected to the inner top wall of the spring groove (5212).

Images