A powder can capping device and its processing technology

Abstract

The present application relates to a powder can capping device and its processing technology, and relates to the technical field of packaging machinery. It includes a working frame, on which a conveyor belt and a storage plate are provided, the conveyor belt is used to transport the can body, the storage plate is located directly above the conveyor belt, and the storage plate is used to store a number of stacked cover plates, and a feeding mechanism is provided on the working frame, and the feeding mechanism is used to move the cover plates downward in sequence, and the feeding mechanism includes a limit assembly and a moving assembly, the limit assembly is provided on the storage plate, the limit assembly abuts against the cover plate at the bottom of the storage plate, and is used to limit the cover plate from moving downward, the moving assembly is provided on the working frame, and the moving assembly is connected to the limit assembly, and the moving assembly is used to drive the limit assembly to separate from the cover plate. The present application has the effect of facilitating the sequential feeding of the cover plates on the can body and improving production efficiency.

Description

Technical Field

[0001] The present application relates to the field of packaging machinery, and in particular to a powder can capping device and a processing technology thereof. Background Art

[0002] Food cans need to be sealed with sealing lids to block the circulation of air and prevent bacteria and moisture from entering and contaminating the cans. After being sealed and sterilized, the food cans can be preserved for a long time, ensuring that the food is still in a healthy state when it reaches the hands of consumers.

[0003] In the prior art, a pressing method is usually used to cap food cans. When capping, the lid is placed on the can body and then pressed to fix it. When placing the lid, it is not convenient to take the lid because the lid itself is thin. It is easy to take multiple stacked lids at one time and then disperse them to place the single lid on the can body in turn. The operation is inconvenient and the production efficiency is low, so it needs to be improved. Summary of the invention

[0004] In order to improve the problem that it is inconvenient to load the lids onto the can bodies one by one in sequence, resulting in low production efficiency, the present application provides a powder can capping device and a processing technology thereof.

[0005] In the first aspect, the present application provides a powder can capping device that adopts the following technical solution:

[0006] A powder can capping device, comprising:

[0007] Work rack;

[0008] A conveyor belt, arranged on the working frame, for conveying the can body;

[0009] A storage plate, arranged on the work frame, the storage plate is located directly above the conveyor belt, and the storage plate is used to store a plurality of stacked cover plates;

[0010] A material unloading mechanism is arranged on the working frame, and is used to move the cover plate downward in sequence. The material unloading mechanism includes a limit assembly and a moving assembly. The limit assembly is arranged on the storage plate, and the limit assembly abuts against the cover plate at the bottom of the storage plate to limit the cover plate from moving downward. The moving assembly is arranged on the working frame, and the moving assembly is connected to the limit assembly. The moving assembly is used to drive the limit assembly to separate from the cover plate.

[0011] By adopting the above technical solution, when in use, a plurality of cans are placed on the conveyor belt, and the plurality of cans are arranged in sequence along the length direction of the conveyor belt, and then the conveyor belt is started to transport the cans toward the storage plate. In the initial state, the limit assembly abuts against the bottom cover plate on the storage plate to play a supporting role to prevent the cover plate from moving down. When one of the cans reaches directly below the cover plate, the moving assembly is started to drive the limit assembly to move, so that the limit assembly is separated from the cover plate, so that the cover plate loses its restriction and falls on the top of the can under the action of gravity. At this time, the second to last cover plate at the bottom of the storage plate falls and becomes the bottom cover plate on the new storage plate. Then, the moving assembly is used to drive the limit assembly to reset, so that the limit plate abuts against the bottom cover plate on the new storage plate to achieve restriction on the remaining cover plates on the storage plate, so that only one cover plate is on top of the can, and the cover plates are automatically and orderly unloaded, thereby improving production efficiency.

[0012] Optionally, the limiting assembly includes two limiting members, which are arranged symmetrically with the central axis of the storage plate as an axis, and the limiting members include:

[0013] two slide bars fixed on the storage plate;

[0014] Two limit plates are arranged between two sliding rods, and the two limit plates are arranged up and down. The edges of the limit plates are embedded in the sliding rod. The limit plates can move on the sliding rod toward or away from the cover plate. The two limit plates can respectively abut against the bottom walls of the two lowest cover plates on the storage plate, and the moving component is connected to the limit plates.

[0015] By adopting the above technical solution, in the initial state, the lower limit plate abuts against the cover plate at the bottom of the storage plate, and the upper limit plate does not contact the cover plate. When the tank body reaches the bottom of the cover plate, the lower limit plate is moved along the slide bar in the direction away from the cover plate. At the same time, the upper limit plate is moved along the slide bar in the direction close to the cover plate, so that the cover plate at the bottom of the storage plate loses support and falls down. The upper limit plate prevents the second to last cover plate at the bottom of the storage plate from moving down. When the cover plate at the bottom of the storage plate has fallen on the top of the tank body, the two limit plates are reset, so that the upper limit plate is separated from the cover plate, so that the second to last cover plate moves down to the bottom of the storage plate, and the lower limit plate moves to abut against the cover plate, that is, all the cover plates on the storage plate sink by a distance of one cover plate. Repeat the above steps to realize the orderly unloading of a number of cover plates, ensure that a single cover plate is automatically supported on the tank body, and improve production efficiency.

[0016] Optionally, the mobile component includes:

[0017] A moving rod slidably connected to the storage plate;

[0018] A moving cylinder is arranged on the storage plate, the output end of the moving cylinder is connected to the moving rod, and the moving cylinder is used to drive the moving rod to move towards or away from the limiting plate;

[0019] The moving block is fixed on the moving rod, and the two limiting plates are provided with limiting holes. The two limiting holes are symmetrically arranged with the central axis of the limiting plate as the axis. The moving block is penetrated by the two limiting holes. When the moving rod drives the moving block to move, it is used to drive the two limiting plates to move closer to or away from each other.

[0020] By adopting the above technical solution, the moving cylinder is started to drive the moving rod to move, so that the moving block moves in one direction in the two limit holes, and the side wall of the limit rod abuts against the inner wall of the limit hole, thereby applying a thrust force to the inner wall of the limit hole, so that the limit plate moves along the length direction of the slide rod. Because the trajectories of the two limit holes are opposite, the movement trajectories of the two limit plates are opposite, thereby realizing alternating support for the first and second cover plates at the bottom of the storage plate, so as to achieve the purpose of only one cover plate falling on the storage plate at a time.

[0021] Optionally, a processing disc is provided on the workbench, the conveyor belt passes through the processing disc, the processing disc is flush with the upper surface of the conveyor belt, the tank body can be placed on the processing disc, and a laser sensor is provided on the workbench, the laser sensor is located above the processing disc, the tank body can be moved to directly below the laser sensor, and the laser sensor is used to detect the presence of the cover plate.

[0022] By adopting the above technical solution, when the bottom cover on the storage plate falls to the top of the tank, the tank is moved to the processing disc and is located directly below the laser sensor. At this time, the laser sensor emits laser light to the tank. When the laser is irradiated to the cover, the laser will scatter in all directions, and part of the scattered light will return to the receiver of the laser sensor. According to the time of receiving the laser, the target distance can be measured. When there is no cover on the tank, the laser needs to irradiate the inner bottom wall of the tank before it will return, which takes a long time and the distance is long, so it is determined that there is no cover on the tank, and the detection of whether there is a cover on the tank is realized, which improves the accuracy of production.

[0023] Optionally, a driving assembly is provided on the workbench, and the driving assembly is used to move the can body on the conveyor belt to the processing disc, and the driving assembly includes:

[0024] A driving disc is rotatably connected to the work frame, the driving disc is located above the processing disc and is coaxial with the processing disc, and a plurality of receiving grooves for inserting the can bodies are provided on the circumferential side wall of the driving disc;

[0025] The driving motor is arranged on the working frame, and the output end of the driving motor is coaxially fixed with the driving disc and is used to drive the driving disc to rotate.

[0026] By adopting the above technical solution, when the can body on the conveyor belt moves to the bottom of the cover plate on the storage plate, the can body is inserted into one of the receiving grooves. After the cover plate at the bottom of the storage plate falls to the top of the can body, the drive motor is started to drive the drive disc to rotate, and the inner wall of the receiving groove abuts against the side wall of the can body, thereby pushing the can body out of the conveyor belt and placing it on the processing disc so that the laser sensor can detect the cover plate on the can body. After the detection is completed, the drive motor is started again, and the drive disc is used to move the can body around the processing disc until the can body reaches the conveyor belt again, and then the conveyor belt is started to transport the can body with the cover plate installed.

[0027] Optionally, a pressing assembly is provided on the working frame, and the pressing assembly is used to press the cover plate onto the tank body, and the pressing assembly includes:

[0028] A pressing cylinder is arranged on the workbench, a mounting hole is opened on the processing disc, a mounting disc is inserted into the mounting hole, and an output end of the pressing cylinder is fixed to the mounting disc to drive the mounting disc to move up and down;

[0029] The cutter disc is arranged on the working frame, and the cutter disc is located just above the mounting disc.

[0030] By adopting the above technical solution, when the cover plate is placed on the top of the tank body and detected by the laser sensor, the tank body is driven by the driving disc to reach directly below the cutter disc. At this time, the tank body is located on the mounting disc, and the pressing cylinder is started to drive the mounting disc upward, thereby driving the tank body to move until the tank body drives the cover plate to rest against the cutter disc, so that the cutter disc presses the cover plate relatively, thereby pressing the cover plate against the tank body, thereby increasing the stability of the connection between the cover plate and the tank body.

[0031] Optionally, the work frame is provided with a fixing assembly, and the fixing assembly is used to fix the cover plate on the tank body, and the fixing assembly includes:

[0032] A fixed shell is arranged on the working frame, a plurality of cams are fixed on the side wall of the fixed shell, and the cutter disc is arranged on the fixed shell;

[0033] A rotating rod is coaxially arranged in the fixed shell, and the bottom end of the rotating rod is connected to the sealing knife;

[0034] A connecting plate, sleeved on the fixed shell;

[0035] A bending piece is arranged on the connecting plate, and the bending piece can move toward the direction of the knife disc, and is used for bending the edge of the cover plate and pressing it against the side wall of the can body.

[0036] By adopting the above technical solution, when the cover plate is pressed against the tank body under the relative extrusion of the knife disc, the rotating rod is driven to rotate, so that the connecting plate rotates around the fixed shell with the bending part. During this process, the bending part abuts against the edge of the cover plate and bends the edge of the cover plate downward until the edge of the cover plate abuts against the outer wall of the tank body, so that the cover plate is buckled under the tank body, thereby increasing the tightness of the cover plate installed on the tank body.

[0037] Optionally, the bending part includes:

[0038] Two extrusion wheels, the two extrusion wheels are symmetrically arranged with the rotating rod as the axis, the extrusion wheels are provided with an extrusion rod, the extrusion rod passes through the connecting plate and can rotate on the connecting plate, the extrusion rod can abut against the cam, the extrusion rod rotates with the connection between the extrusion rod and the connecting plate as the axis, and is used to drive the extrusion wheel to approach the cutter disc;

[0039] Two rollers are symmetrically arranged with a rotating rod as an axis, the rollers are located between two extrusion wheels, and a connecting rod is provided on the rollers. The connecting rod passes through the connecting plate and can rotate on the connecting plate. The connecting rod can rotate with the connection between the connecting rod and the connecting plate as an axis, so as to drive the rollers to be close to the cutter disc.

[0040] By adopting the above technical solution, when the tank body with the cover plate is pressed against the cutter disc, the rotating rod is driven to rotate, so that the connecting plate carries the extrusion rod and the connecting rod to revolve around the fixed shell. When the extrusion rod moves to abut against the cam, the distance between one end of the extrusion rod and the fixed shell becomes larger than before. According to the lever principle, the extrusion rod will rotate with the connection between the extrusion rod and the connecting plate as the axis, so that the other end of the extrusion rod brings the extrusion wheel close to the cutter disc, and then squeezes the edge of the cover plate toward the tank body, so as to achieve fixed-point bending of the cover plate. Then the extrusion rod separates from the cam, and when the connecting rod moves to the cam, the connecting rod also rotates on the connecting plate, so that the connecting rod brings the roller close to the cutter disc. In this process, the connecting plate also moves continuously with the connecting rod, so that the roller slides on the edge of the cover plate, so that a circle of the cover plate is bent down, and the cover plate is bent and fixed on the tank body.

[0041] Optionally, the fixing component includes:

[0042] A positioning shell is arranged on the working frame, and the cutter disc is arranged on the positioning shell;

[0043] An internal gear is rotatably connected to the cutter disc, the internal gear is coaxial with the cutter disc, a worm wheel is coaxially sleeved on the internal gear, the worm wheel is driven to rotate by a worm, and the worm is arranged on the cutter disc;

[0044] A plurality of rotating gears, rotatably connected to the positioning housing, the plurality of rotating gears being evenly arranged along the circumference direction of the internal gear, the rotating gears being meshed with the internal gear;

[0045] A plurality of rotating racks are slidably connected to the positioning shell, the plurality of rotating racks correspond to the rotating gears one by one, and the rotating racks mesh with the corresponding rotating gears, and the plurality of rotating racks are radially arranged with the center of the cutter disc as the center of the circle;

[0046] A plurality of abutment blocks, each of which corresponds to a rotating rack. The abutment blocks are arranged on one end of the rotating rack close to the center of the disc. The abutment blocks can abut against the side wall of the tank body. An extrusion block is hinged on the abutment blocks.

[0047] A sliding rod is slidably connected to the positioning shell. The sliding rod can move vertically on the positioning shell. A plurality of connecting rods are hinged on the sliding rod. One end of the connecting rod away from the sliding rod is hinged to the extrusion block. The movement of the sliding rod is used to drive the connecting rod to drive the extrusion block to move toward or away from the center axis of the cutter disc.

[0048] By adopting the above technical solution, when the tank body with the cover plate is pressed against the cutter disc, the worm is started to drive the worm wheel to rotate, which drives the internal gear to rotate, so that several rotating gears rotate synchronously, thereby driving several rotating racks to move towards the tank body at the same time. Since the rotation angle of each rotating gear is consistent, several rotating racks move the same distance at the same time, that is, the shape surrounded by the ends of several rotating racks is always a circle coaxial with the cutter disc.

[0049] When the abutment block at the end of the rotating rack abuts against the side wall of the tank body at the same time, the tank body and the cutter disc are coaxial, and the tank body is positioned so that the tank body will not be offset. In the process of the rotating rack moving, the extrusion block is driven to move at the same time, so that one end of the connecting rod gradually approaches the central axis of the cutter disc, that is, the distance between the two ends of the connecting rod in the horizontal direction is reduced, and the length of the connecting rod itself is fixed, so that the end of the connecting rod away from the rotating rack gradually moves upward to drive the sliding rod to move upward. After the abutment block positions the tank body, it directly presses the sliding rod to drive the end of the connecting rod to move downward, driving the extrusion block to rotate with the connection between the extrusion block and the abutment block as the axis, so that the extrusion block gradually applies downward pressure to the edge of the cover plate, so as to achieve the bending and fixing of the cover plate on the tank body.

[0050] During this process, the abutment block limits the displacement of the tank body during the bending of the cover plate, and at the same time, it can carry the extrusion block to the edge of the tank body with different diameters, and bend and fix the covers of different sizes on the tank body, which has better applicability.

[0051] In the second aspect, the present application also provides a processing technology of a powder can capping device adopting the following technical solution:

[0052] S1, the conveyor belt transports the cans in sequence. When the cans reach the driving disc and are stuck in the receiving groove, the driving disc rotates and pushes the cans onto the processing disc;

[0053] S2. Use a laser sensor to detect the top of the tank. If there is a cover, move the tank to the next station. If there is no cover, an alarm is sounded.

[0054] S3, the tank body with the cover plate arrives at the next station, and the cover plate is pressed and fastened on the tank body by using the fixing assembly and the pressing assembly;

[0055] S4, then the can with the cover plate installed is moved back to the conveyor belt, and transported by the conveyor belt to complete the can body capping work.

[0056] In summary, the present application includes at least one of the following beneficial effects:

[0057] 1. In the initial state, the limit assembly abuts against the bottom cover plate on the storage plate to play a supporting role to prevent the cover plate from moving down. When one of the tank bodies reaches directly below the cover plate, the moving assembly is started to drive the limit assembly to move, so that the limit assembly is separated from the cover plate, so that the cover plate loses its restriction and falls on the top of the tank body under the action of gravity. At this time, the second to last cover plate at the bottom of the storage plate falls and becomes the bottom cover plate on the new storage plate. Then the moving assembly is used to drive the limit assembly to reset, so that the limit plate abuts against the bottom cover plate on the new storage plate to limit the remaining cover plates on the storage plate, so that only one cover plate will be on top of the tank body, realizing automatic and orderly unloading of the cover plates and improving production efficiency.

[0058] 2. In the initial state, the lower limit plate abuts against the cover plate at the bottom of the storage plate, and the upper limit plate does not contact the cover plate. When the tank body reaches the bottom of the cover plate, the lower limit plate is moved along the slide bar in the direction away from the cover plate. At the same time, the upper limit plate is moved along the slide bar in the direction close to the cover plate, so that the cover plate at the bottom of the storage plate loses support and falls down. The upper limit plate prevents the second-to-last cover plate at the bottom of the storage plate from moving down. When the cover plate at the bottom of the storage plate has fallen on the top of the tank body, the two limit plates are reset so that the upper limit plate and the cover plate are pulled away, so that the second-to-last cover plate moves down to the bottom of the storage plate, and the lower limit plate moves to abut against the cover plate, that is, all the cover plates on the storage plate sink by a distance of one cover plate. Repeat the above steps to realize the orderly unloading of several cover plates in sequence, ensuring that a single cover plate is automatically supported on the tank body, thereby improving production efficiency.

[0059] 3. Use the worm gear to drive the rotating gear to rotate, so that the rotating rack drives the abutment block to abut against the tank body to achieve the positioning of the tank body, and then press down the sliding rod. Driven by the connecting rod, the extrusion block abuts against the edge of the cover plate, and exerts pressure on the cover plate to move toward the tank body, so as to bend and fix the cover plate on the tank body. In this process, the abutment block limits the displacement of the tank body during the bending of the cover plate, and can also bring the extrusion block to the edge of the tank body with different diameters, so as to bend and fix the covers of different sizes on the tank body, which has better applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present application;

[0061] Figure 2 It is a schematic diagram of the structure of the driving component and the pressing component in the first embodiment;

[0062] Figure 3 It is a structural schematic diagram of a feeding mechanism of an embodiment;

[0063] Figure 4 It is a structural schematic diagram of the fixing assembly and the detection sensor in the first embodiment;

[0064] Figure 5 It is a schematic diagram of the structure of the bending part in the first embodiment;

[0065] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present application;

[0066] Figure 7 It is a schematic diagram of the structure of the fixing component in the second embodiment.

[0067] In the figure: 10, work frame; 20, conveyor belt; 30, storage plate; 40, unloading mechanism; 41, limit assembly; 411, limit piece; 4111, slide bar; 4112, limit plate; 4113, limit hole; 42, moving assembly; 421, moving rod; 422, moving cylinder; 423, moving block; 50, processing disc; 51, mounting hole; 52, mounting disc; 60, laser sensor; 70, driving assembly; 71, driving disc; 711, receiving groove; 72, driving motor; 80, pressing assembly; 81, pressing cylinder; 8 2. Cutter disc; 90. Fixed assembly; 91. Fixed shell; 911. Cam; 92. Rotating rod; 93. Connecting plate; 94. Bending piece; 941. Extrusion rod; 9411. Vertical rod; 9412. Horizontal plate; 9413. Contact wheel; 942. Extrusion wheel; 943. Connecting rod; 944. Roller; 95. Positioning shell; 951. Worm; 952. Sliding rod; 953. Connecting rod; 96. Internal gear; 961. Worm wheel; 97. Rotating gear; 98. Rotating rack; 99. Abutment block; 991. Extrusion block; 110. Detection sensor. DETAILED DESCRIPTION

[0068] The following is combined with Figure 1-7 This application is described in further detail.

[0069] Embodiment 1,

[0070] The present application embodiment discloses a powder can capping device. Figure 1 and Figure 2 The powder can capping device includes a working frame 10, on which a conveyor belt 20 and a processing disc 50 are arranged. The conveyor belt 20 is arranged horizontally, and the can body is placed on the upper surface of the conveyor belt 20. The conveyor belt 20 can drive a plurality of can bodies to move in sequence along the length direction of the conveyor belt 20. The processing disc 50 is fixed on the working frame 10, and the processing disc 50 is arranged horizontally, and the processing disc 50 and the upper surface of the conveyor belt 20 are on the same horizontal plane, wherein the conveyor belt 20 passes through the processing disc 50, so that the conveyor belt 20 and the processing disc 50 are coaxial, that is, the processing disc 50 is actually two semi-circular discs located on both sides of the conveyor belt 20.

[0071] Reference Figure 2 and Figure 3 , a feeding mechanism 40 is provided on the work frame 10, and the feeding mechanism 40 is aligned with the conveyor belt 20. However, when the can body reaches the bottom of the feeding mechanism 40 under the conveyance of the conveyor belt 20, a number of cover plates are stacked on the feeding mechanism 40, and the feeding mechanism 40 drives a cover plate to fall on the can body, and then the can body is translated onto the processing disc 50. A laser sensor 60 is installed on the work frame 10, and the laser sensor 60 is aligned with the processing disc 50 and is located directly above the can body. At this time, the laser sensor 60 emits a laser to the can body. When the laser is irradiated to the cover plate, the laser will scatter in all directions, and part of the scattered light returns to the receiver of the laser sensor 60. According to the time of receiving the laser, the target distance can be measured. When there is no cover plate on the can body, the laser needs to irradiate the inner bottom wall of the can body before it will return, which takes a long time and the distance is long, so it is determined that there is no cover plate on the can body, and the detection of whether there is a cover plate on the can body is realized, which improves the accuracy of production.

[0072] Reference Figure 1 and Figure 2 In order to translate the can body from the conveyor belt 20 to the processing disc 50, a driving assembly 70 is provided on the work frame 10. The driving assembly 70 includes a driving disc 71 and a driving motor 72. The driving motor 72 is installed on the work frame 10 by bolts. The output end of the driving motor 72 is vertically downward and coaxial with the processing disc 50. The driving disc 71 is rotatably connected to the work frame 10. The driving disc 71 is located above the processing disc 50 and is coaxial with the processing disc 50. The output end of the driving motor 72 is coaxially fixed with the driving disc 71.

[0073] Reference Figure 2 and Figure 4 , a plurality of receiving grooves 711 are provided on the circumferential side wall of the driving disc 71, and the plurality of receiving grooves 711 are evenly distributed along the circumference direction of the driving disc 71. When the can body on the conveyor belt 20 moves to the bottom of the cover plate on the storage plate 30, the can body is inserted into one of the receiving grooves 711. After the bottom cover plate on the storage plate 30 falls to the top of the can body, the driving motor 72 is started to drive the driving disc 71 to rotate, and the inner wall of the receiving groove 711 abuts against the side wall of the can body, thereby pushing the can body out of the conveyor belt 20 and placing it on the processing disc 50, so that the laser sensor 60 can detect the cover plate on the can body. After the detection is completed, the driving motor 72 is started again, and the driving disc 71 is used to move the can body around the processing disc 50 until the can body reaches the conveyor belt 20 again, and then the conveyor belt 20 is started to transport the can body with the cover plate installed.

[0074] Reference Figure 2 and Figure 3 The unloading mechanism 40 includes a limiting component 41 and a moving component 42, both of which are arranged on the storage plate 30, and the moving component 42 is connected to the limiting component 41. The moving component 42 drives the limiting component 41 to abut against the cover plate to limit the cover plate from falling.

[0075] Reference Figure 2 and Figure 3 The limiting assembly 41 includes two limiting members 411, and the two limiting members 411 are arranged symmetrically with the central axis of the storage plate 30 as the axis. The limiting member 411 includes two sliding rods 4111 and two limiting plates 4112. The two sliding rods 4111 are parallel to each other and on the same horizontal plane. One end of the sliding rod 4111 is fixed on the storage plate 30, and the two limiting plates 4112 are inserted between the two sliding rods 4111. The two limiting plates 4112 are stacked up and down, and the edges of the limiting plates 4112 are embedded in the sliding rod 4111. The limiting plates 4112 can move on the sliding rod 4111 in the direction of approaching or moving away from the cover plate, and the two limiting plates 4112 can respectively abut against the bottom walls of the two bottom cover plates on the storage plate 30. Limiting holes 4113 are provided on the two limiting plates 4112, and the two limiting holes 4113 are arranged symmetrically with the central axis of the limiting plates 4112 as the axis.

[0076] Reference Figure 2 and Figure 3The moving assembly 42 is connected to the limiting plate 4112. The moving assembly 42 includes a moving cylinder 422, a moving rod 421 and a moving block 423. The moving cylinder 422 is installed on the storage plate 30 by bolts. The output end of the moving cylinder 422 is fixed to the moving rod 421. The moving cylinder 422 can drive the moving rod 421 to move closer to or away from the storage plate 30 in the horizontal direction. The moving block 423 is fixed on the moving rod 421. The moving block 423 is penetrated by two limiting holes 4113. When the moving rod 421 drives the moving block 423 to move, it is used to drive the two limiting plates 4112 to move closer to or away from each other.

[0077] In the initial state, the lower limiting plate 4112 abuts against the bottom cover of the storage plate 30, and the upper limiting plate 4112 does not contact the cover. When the tank body reaches the bottom of the cover, the moving cylinder 422 is started to drive the moving rod 421 to move, so that the moving block 423 moves in one direction in the two limiting holes 4113, and the side wall of the limiting rod abuts against the inner wall of the limiting hole 4113, thereby applying a thrust to the inner wall of the limiting hole 4113, so that the limiting plate 4112 moves along the sliding rod 4111. The two limiting holes 4113 have opposite trajectories, so that the two limiting plates 4112 have opposite movement trajectories, that is, the lower limiting plate 4112 moves along the slide bar 4111 in the direction away from the cover plate, and at the same time, the upper limiting plate 4112 moves along the slide bar 4111 in the direction close to the cover plate, so that the cover plate at the bottom of the storage plate 30 loses support and falls down, and the upper limiting plate 4112 prevents the second to last cover plate at the bottom of the storage plate 30 from moving down.

[0078] Reference Figure 2 and Figure 3 When the cover plate at the bottom of the storage plate 30 has fallen on the top of the tank body, the two limit plates 4112 are reset so that the upper limit plate 4112 and the withdrawn cover plate make the second to last cover plate move down to the bottom of the storage plate 30, and the lower limit plate 4112 moves to abut against the cover plate, that is, all the cover plates on the storage plate 30 sink by a distance of one cover plate, and the above steps are repeated. The two limit plates 4112 realize alternating support for the first and second cover plates at the bottom of the storage plate 30, thereby realizing orderly and sequential unloading of multiple cover plates, ensuring that a single cover plate is automatically supported on the tank body, thereby improving production efficiency.

[0079] Reference Figure 2 and Figure 3In order to increase the stability of the cover plate installed on the tank body, a pressing assembly 80 is provided on the workbench 10. The pressing assembly 80 includes a pressing cylinder 81 and a cutter disc 82. The pressing cylinder 81 is located below the processing disc 50 and is installed on the workbench 10 through threads. A mounting hole 51 is opened on the processing disc 50, and a mounting disc 52 is adapted to be inserted in the mounting hole 51. The output end of the pressing cylinder 81 is fixed to the mounting disc 52 for driving the mounting disc 52 to move up and down.

[0080] Reference Figure 2 and Figure 4 The knife disc 82 is mounted on the work frame 10 through the fixing assembly 90, and the knife disc 82 is located directly above the mounting disc 52. When the cover plate is placed on the top of the tank body, after being detected by the laser sensor 60, the tank body is driven by the driving disc 71 to reach directly below the knife disc 82. At this time, the tank body is located on the mounting disc 52, and the pressing cylinder 81 is started to drive the mounting disc 52 to move upward, thereby driving the tank body to move until the tank body drives the cover plate to rest against the knife disc 82, so that the knife disc 82 relatively presses the cover plate, thereby pressing the cover plate tightly against the tank body, thereby increasing the stability of the connection between the cover plate and the tank body.

[0081] Reference Figure 2 and Figure 4 , wherein the fixed assembly 90 includes a fixed shell 91, a rotating rod 92, a connecting plate 93 and a bending member 94, the fixed shell 91 is mounted on the work frame 10, a plurality of cams 911 are fixed on the side wall of the fixed shell 91, the cutter head 82 is fixed on the bottom of the fixed shell 91, the rotating rod 92 is coaxially penetrated in the fixed shell 91, and the rotating rod 92 can rotate in the fixed shell 91. The connecting plate 93 is sleeved on the fixed shell 91 and fixed to the rotating rod 92, that is, the connecting plate 93 can rotate on the fixed shell 91.

[0082] Reference Figure 2 and Figure 4 The bending member 94 includes two extrusion wheels 942 and two rollers 944, which are arranged at intervals along the circumference of the cutter disc 82, and the extrusion wheels 942 and the rollers 944 are both located at the edge of the cutter disc 82. The two extrusion wheels 942 are arranged symmetrically with the rotating rod 92 as the axis, and an extrusion rod 941 is installed on the extrusion wheels 942.

[0083] Reference Figure 4 and Figure 5The extrusion rod 941 includes a vertical rod 9411, two horizontal plates 9412 and a contact wheel 9413. The vertical rod 9411 vertically penetrates the connecting plate 93 and is rotatably connected to the connecting plate 93 through a bearing, that is, the vertical rod 9411 can rotate. A torsion spring is sleeved on the vertical rod 9411, and the torsion spring is located in the connecting plate 93, which is not shown in the figure. The horizontal plate 9412 is horizontally arranged, and the two horizontal plates 9412 are respectively located on the upper and lower sides of the connecting plate 93. The vertical rod 9411 and the two horizontal plates 9412 are fixed at their ends close to each other, so that the vertical rod 9411 and the two horizontal plates 9412 form a Z-shaped rod.

[0084] Reference Figure 4 and Figure 5 , and the contact wheel 9413 is installed on the horizontal plate 9412 located above the connecting plate 93, and is connected to the end of the horizontal plate 9412 away from the vertical rod 9411, and the extrusion wheel 942 is installed on the end of the other horizontal plate 9412 away from the vertical rod 9411, that is, the contact wheel 9413 and the extrusion wheel 942 are respectively located at the two ends of the Z-shaped rod, wherein the torsion spring drives the contact wheel 9413 to always abut against the fixed shell 91, when the rotating shaft drives the connecting plate 93 to rotate, the contact wheel 9413 is driven to abut against the cam 911, that is, one end of the Z-shaped rod formed by the extrusion rod 941 swings in the direction away from the central axis of the fixed shell 91, overcoming the elastic force of the torsion spring, so that the vertical rod 9411 rotates, and the other end of the Z-shaped rod formed by the extrusion rod 941 drives the extrusion wheel 942 to move in the direction close to the cutter disc 82.

[0085] Reference Figure 2 and Figure 4 The two rollers 944 are arranged symmetrically with the rotating rod 92 as the axis, and the roller 944 is located between the two extrusion wheels 942. A connecting rod 943 is installed on the roller 944. The connecting rod 943 has the same structure as the extrusion rod 941, and both are Z-shaped rods, which will not be described here. That is, the connecting rod 943 also passes through the connecting plate 93, and one end of the connecting rod 943 can abut against the cam 911, so that the connecting rod 943 swings to drive the roller 944 to move toward the direction close to the cutter disc 82.

[0086] When the can body and the cover plate are pressed against the knife disc 82, the rotating rod 92 is driven to rotate, so that the connecting plate 93, the extruding rod 941 and the connecting rod 943 revolve around the fixed shell 91. When the extruding rod 941 moves to abut against the cam 911, the contact wheel 9413 changes from the original abutment with the fixed shell 91 to abut against the cam 911, so that the contact wheel 9413 deflects in the direction away from the fixed shell 91. In addition, because the extruding rod 941 as a whole is connected by the vertical rod 9411 and the two horizontal plates 9412 to form a Z-shaped rod, that is, one end of the Z-shaped rod moves, and the vertical rod 9411 of the extruding rod 941 rotates. According to the lever principle, the other end of the extruding rod 941 will move in the direction close to the fixed shell 91 with the vertical rod 9411 as the axis, and bring the extruding wheel 942 close to the knife disc 82, and then squeeze the edge of the cover plate toward the direction of the can body, thereby realizing the fixed-point bending of the cover plate.

[0087] Then, the extrusion rod 941 is separated from the cam 911, and when the connecting rod 943 moves to the cam 911, the connecting rod 943 also rotates on the connecting plate 93, so that the connecting rod 943 brings the roller 944 closer to the knife disc 82. During this process, the connecting plate 93 also moves with the connecting rod 943, so that the roller 944 slides on the edge of the cover plate, so that a circle of the cover plate is bent down, and the cover plate is bent and fixed on the tank body.

[0088] Reference Figure 2 and Figure 4 A detection sensor 110 is provided on the workbench 10. In the embodiment of the present application, the detection sensor 110 here also adopts the laser sensor 60. The detection sensor is located on the side of the pressing component 80 away from the laser sensor 60. The detection sensor 110 is located above the processing disc 50. The detection sensor 110 is used to detect the existence of the cover.

[0089] When the cover is fastened to the can body, the driving disc 71 is started again to drive the can body to move to the conveyor belt 20 again along the track of the processing disc 50, and then the conveyor belt 20 transports the can body away from the processing disc 50. Thereafter, when the driving disc 71 rotates again, it drives the receiving slot 711 of the can body that has just been transported to the bottom of the detection sensor 110, and the detection sensor 110 detects whether there is a cover in the receiving slot 711 at this location, thereby determining whether the cover has been fixedly installed on the transported can body, thereby improving the accuracy of production.

[0090] The implementation principle of the first embodiment of the present application is: when in use, a plurality of cans are placed on the conveyor belt 20, and the plurality of cans are arranged in sequence along the length direction of the conveyor belt 20, and then the conveyor belt 20 is started to transport the cans toward the storage plate 30. In the initial state, the limit assembly 41 abuts against the bottom cover plate on the storage plate 30 to play a supporting role to prevent the cover plate from moving down. When one of the tank bodies reaches directly below the cover plate, the moving assembly 42 is started to drive the limit assembly 41 to move, so that the limit assembly 41 is separated from the cover plate, so that the cover plate loses its restriction and falls on the top of the tank body under the action of gravity. At this time, the second to last cover plate at the bottom of the storage plate 30 falls and becomes the bottom cover plate on the new storage plate 30. The moving assembly 42 is then used to drive the limit assembly 41 to reset, so that the limit plate 4112 abuts against the bottom cover plate on the new storage plate 30 to achieve restriction on the remaining cover plates on the storage plate 30, so that only one cover plate will be on top of the tank body, realizing automatic and orderly unloading of the cover plates and improving production efficiency.

[0091] Embodiment 2:

[0092] The difference between the second embodiment and the first embodiment is that: Figure 6 and Figure 7 The fixed assembly includes a positioning shell 95, an internal gear 96, a plurality of rotating gears 97 and a plurality of rotating racks 98. The positioning shell 95 is mounted on the work frame. The cutter disc 82 is rotatably connected to the bottom of the positioning shell 95 through a bearing. The internal gear 96 is mounted on the fixed shell 91, and the internal gear 96 is coaxial with the cutter disc 82. The internal gear 96 can rotate on the fixed shell 91 with the central axis of the cutter disc 82 as the axis. A worm gear 961 is coaxially sleeved on the internal gear 96. The worm gear 961 is fixed to the internal gear 96. A worm 951 is rotatably connected to the positioning shell 95. The worm 951 is arranged along the tangent direction of the worm gear 961. The worm 951 meshes with the worm gear 961 to drive the worm gear 961 to rotate.

[0093] A plurality of rotating gears 97 are rotatably connected to the cutter disc 82. The plurality of rotating gears 97 are located inside the internal gear 96 and are evenly arranged along the circumference direction of the internal gear 96. The rotating gears 97 are meshed with the internal gear 96. A plurality of rotating racks 98 are slidably connected to the fixed shell 91. The rotating racks 98 can move along the diameter direction of the cutter disc 82 on the fixed shell 91. The plurality of rotating racks 98 correspond one-to-one to the rotating gears 97, and the rotating racks 98 are meshed with the corresponding rotating gears 97.

[0094] Reference Figure 7Abutment block 99 is fixed on one end of the rotating rack 98 near the center of the disc. The abutment block 99 is an L-shaped rod. Specifically, the vertical rod of the abutment block 99 is fixed to the rotating rack 98, and the cross bar faces the central axis of the cutter disc 82, so that the abutment block 99 can abut against the side wall of the tank. On the vertical rod of the abutment block 99, there is also a hinged extrusion block 991. The extrusion block 991 is a smaller L-shaped rod, wherein the bending part of the extrusion block 991 is hinged on the abutment block 99, and a torsion spring is sleeved at the connection to reset the extrusion block 991. A connecting rod 953 is hinged on the top of the extrusion block 991, and a sliding rod 952 is hinged on the end of the connecting rod 953 away from the extrusion block 991. The sliding rod 952 is slidably connected to the positioning shell 95, and the sliding rod 952 can move vertically on the positioning shell 95 to drive the extrusion block 991 to move in the direction close to or away from the central axis of the cutter disc 82.

[0095] Reference Figure 6 and Figure 7 A cylinder is installed on the positioning shell 95, and the output end of the cylinder is aligned with the top of the sliding rod 952. The cylinder is started so that the output end of the starting cylinder abuts against the sliding rod 952, which can drive the sliding rod 952 to move downward. A motor can be installed on the workbench, and the output shaft of the motor is connected to the positioning shell 95 to drive the positioning shell 95 to rotate around the central axis of the knife disc 82, so that the extrusion block 991 moves along the circumference of the tank body, thereby bending and flattening the entire circle of the cover.

[0096] When the tank body with the cover plate is pressed against the cutter disc 82, the worm 951 is started to drive the worm wheel 961 to rotate, which drives the internal gear 96 to rotate, so that the multiple rotating gears 97 rotate synchronously, thereby driving the multiple rotating racks 98 to move towards the tank body at the same time. Because the rotation angle of each rotating gear 97 is consistent, the multiple rotating racks 98 move the same distance at the same time, that is, the shape surrounded by the ends of the multiple rotating racks 98 is always a circle coaxial with the cutter disc 82.

[0097] Reference Figure 6 and Figure 7When the abutment block 99 at the end of the rotating rack 98 abuts against the side wall of the tank body at the same time, the tank body is coaxial with the cutter disc 82, and the tank body is positioned so that the tank body will not be offset. In the process of the rotating rack 98 moving, the squeezing block 991 is driven to move at the same time, so that one end of the connecting rod 953 gradually approaches the central axis of the cutter disc 82, that is, the distance between the two ends of the connecting rod 953 in the horizontal direction is reduced, and the length of the connecting rod 953 itself is fixed, so that the end of the connecting rod 953 away from the rotating rack 98 gradually moves upward to drive the sliding rod 952 to move upward. In the initial state, the cross bar of the extrusion block 991 faces away from the central axis of the knife disc 82. When the abutment block 99 positions the tank body, the cylinder is started to press the sliding rod 952, driving the top end of the connecting rod 953 to move downward, driving the extrusion block 991 to rotate around the connection between the extrusion block 991 and the abutment block 99, so that the other end of the extrusion block 991 gradually approaches the tank body, thereby applying downward pressure on the edge of the cover plate, thereby bending the cover plate and fixing it on the tank body.

[0098] During this process, the abutment block 99 limits the displacement of the tank body during the bending of the cover plate, and at the same time, it can carry the extrusion block 991 to the edge of the tank body with different diameters. Compared with the first embodiment, the extrusion block 991 can bend and fix covers of different sizes on the tank body, and has better applicability.

[0099] The implementation principle of the first embodiment of the present application is: the worm gear 961 and the worm 951 are used to drive the rotating gear 97 to rotate, so that the rotating rack 98 drives the abutment block 99 to abut against the tank body to achieve the positioning of the tank body, and then the sliding rod 952 is pressed down, and under the drive of the connecting rod 953, the extrusion block 991 abuts against the edge of the cover plate, and applies pressure to the cover plate to move toward the tank body, so as to bend and fix the cover plate on the tank body. In this process, the abutment block 99 limits the displacement of the tank body during the bending of the cover plate, and can also bring the extrusion block 991 to the edge of the tank body with different diameters, and bend and fix the covers of different sizes on the tank body, which has better applicability.

[0100] The present application also discloses a processing technology of a powder can capping device using the following technical solution:

[0101] S1, the conveyor belt 20 sequentially transports the cans, and when the cans reach the driving disc 71 and are stuck in the receiving groove 711, the driving disc 71 rotates to push the cans onto the processing disc 50;

[0102] S2, using the laser sensor 60 to detect the top of the tank body, if there is a cover plate, the tank body is moved to the next station, if there is no cover plate, an alarm is sounded;

[0103] S3, the tank body with the cover plate arrives at the next station, and the cover plate is pressed and fastened on the tank body by using the fixing assembly 90 and the pressing assembly 80;

[0104] S4, then the can with the cover plate installed is moved back to the conveyor belt 20, and is transported by the conveyor belt 20 to complete the can body capping work.

[0105] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A powder can capping device, characterized in that: include: Work stand (10); A conveyor belt (20) is arranged on the working frame (10) and is used for conveying the can body; A storage plate (30) is arranged on the working frame (10), the storage plate (30) is located directly above the conveyor belt (20), and the storage plate (30) is used to store a plurality of stacked cover plates; A material unloading mechanism (40) is arranged on the working frame (10). The material unloading mechanism (40) is used to move the cover plates downward in sequence. The material unloading mechanism (40) comprises a limiting assembly (41) and a moving assembly (42). The limiting assembly (41) is arranged on the storage plate (30). The limiting assembly (41) abuts against the cover plate at the bottom of the storage plate (30) to limit the downward movement of the cover plate. The moving assembly (42) is arranged on the working frame (10). The moving assembly (42) is connected to the limiting assembly (41). The moving assembly (42) is used to drive the limiting assembly (41) to separate from the cover plate. A processing disc (50) is provided on the working frame (10), and a pressing assembly (80) is provided on the working frame (10). The pressing assembly (80) is used to press the cover plate onto the tank body. The pressing assembly (80) includes: A pressing cylinder (81) is arranged on the working frame (10); a mounting hole (51) is provided on the processing disc (50); a mounting disc (52) is inserted into the mounting hole (51); an output end of the pressing cylinder (81) is fixed to the mounting disc (52) and is used to drive the mounting disc (52) to move up and down; A cutter disc (82) is arranged on the working frame (10), and the cutter disc (82) is located directly above the mounting disc (52); A fixing assembly (90) is provided on the working frame (10). The fixing assembly (90) is used to fix the cover plate on the tank body. The fixing assembly (90) includes: A fixed shell (91) is arranged on the working frame (10), a plurality of cams (911) are fixed on the side wall of the fixed shell (91), and a cutter disc (82) is arranged on the fixed shell (91); A rotating rod (92) is coaxially disposed in the fixed housing (91); A connecting plate (93) is sleeved on the fixed shell (91), and the connecting plate (93) is connected to the rotating rod (92) and can rotate on the fixed shell (91); A bending member (94) is disposed on the connecting plate (93), and the bending member (94) can move toward the knife disc (82) to bend the edge of the cover plate and abut against the side wall of the can body; The bending part (94) comprises: Two extrusion wheels (942), the two extrusion wheels (942) are symmetrically arranged with the rotating rod (92) as an axis, an extrusion rod (941) is provided on the extrusion wheel (942), the extrusion rod (941) passes through a connecting plate (93) and can rotate on the connecting plate (93), the extrusion rod (941) can abut against the cam (911), and the extrusion rod (941) rotates with the connection between the extrusion rod (941) and the connecting plate (93) as an axis, so as to drive the extrusion wheel (942) to approach the cutter disc (82); Two rollers (944) are symmetrically arranged with the rotating rod (92) as the axis, and the rollers (944) are located between the two extrusion wheels (942). A connecting rod (943) is provided on the rollers (944), and the connecting rod (943) passes through the connecting plate (93) and can rotate on the connecting plate (93). The connecting rod (943) can rotate with the connection between the connecting rod (943) and the connecting plate (93) as the axis, so as to drive the rollers (944) to be close to the cutter disc (82).

2. The powder can capping device according to claim 1, characterized in that: The limiting assembly (41) comprises two limiting members (411), the two limiting members (411) are arranged symmetrically with the central axis of the storage plate (30), and the limiting members (411) include: Two slide bars (4111) fixed on the storage plate (30); Two limit plates (4112) are arranged between the two slide bars (4111). The two limit plates (4112) are arranged up and down. The edges of the limit plates (4112) are embedded in the slide bars (4111). The limit plates (4112) can move on the slide bars (4111) toward or away from the cover plate. The two limit plates (4112) can respectively abut against the bottom walls of the two bottom cover plates on the storage plate (30). The moving assembly (42) is connected to the limit plates (4112).

3. The powder can capping device according to claim 2, characterized in that: The moving assembly (42) comprises: A moving rod (421) is slidably connected to the storage plate (30); A moving cylinder (422) is arranged on the storage plate (30), the output end of the moving cylinder (422) is connected to the moving rod (421), and the moving cylinder (422) is used to drive the moving rod (421) to move in a direction close to or away from the limiting plate (4112); The moving block (423) is fixed on the moving rod (421). The two limiting plates (4112) are both provided with limiting holes (4113). The two limiting holes (4113) are arranged symmetrically with the central axis of the limiting plate (4112). The moving block (423) is provided with the two limiting holes (4113). When the moving rod (421) drives the moving block (423) to move, the two limiting plates (4112) are driven to move closer to or farther away from each other.

4. The powder can capping device according to claim 1, characterized in that: A processing disc (50) is passed through the conveyor belt (20), the processing disc (50) is flush with the upper surface of the conveyor belt (20), the tank body can be placed on the processing disc (50), a laser sensor (60) is provided on the workbench (10), the laser sensor (60) is located above the processing disc (50), the tank body can be moved to the bottom of the laser sensor (60), and the laser sensor (60) is used to detect the existence of the cover plate.

5. The powder can capping device according to claim 4, characterized in that: A driving assembly (70) is provided on the working frame (10), and the driving assembly (70) is used to move the can body on the conveyor belt (20) to the processing disc (50), and the driving assembly (70) includes: A driving disc (71) is rotatably connected to the working frame (10). The driving disc (71) is located above the processing disc (50) and is coaxial with the processing disc (50). A plurality of receiving grooves (711) for inserting the can bodies are provided on the circumferential side wall of the driving disc (71); The driving motor (72) is arranged on the working frame (10), and the output end of the driving motor (72) is coaxially fixed with the driving disc (71) and is used to drive the driving disc (71) to rotate.

6. The powder can capping device according to claim 4, characterized in that: The fixing assembly (90) comprises: A positioning shell (95) is arranged on the working frame, and a cutter disc (82) is arranged on the positioning shell (95); An internal gear (96) is rotatably connected to the cutter disc (82). The internal gear (96) is coaxial with the cutter disc (82). A worm gear (961) is coaxially sleeved on the internal gear (96). The worm gear (961) is driven to rotate by a worm (951). The worm gear (951) is arranged on the cutter disc (82). A plurality of rotating gears (97) are rotatably connected to the positioning housing (95), the plurality of rotating gears (97) are evenly arranged along the circumference direction of the internal gear (96), and the rotating gears (97) are meshed with the internal gear (96); A plurality of rotating racks (98) are slidably connected to the positioning shell (95), the plurality of rotating racks (98) correspond to the rotating gears (97) one by one, and the rotating racks (98) are meshed with the corresponding rotating gears (97), and the plurality of rotating racks (98) are radially arranged with the center of the cutter disc (82) as the center of the circle; A plurality of abutment blocks (99), the plurality of abutment blocks (99) corresponding to the rotating rack (98) one by one, the abutment blocks (99) being arranged on one end of the rotating rack (98) close to the center of the disc, the abutment blocks (99) being able to abut against the side wall of the tank body, and the abutment blocks (991) being hingedly connected to the abutment blocks (99); The sliding rod (952) is slidably connected to the positioning shell (95). The sliding rod (952) can move vertically on the positioning shell (95). A plurality of connecting rods (953) are hinged on the sliding rod (952). One end of the connecting rod (953) away from the sliding rod (952) is hinged to the extrusion block (991). The sliding rod (952) moves to drive the connecting rod (953) to drive the extrusion block (991) to move toward or away from the central axis of the cutter disc (82).

7. A process for processing a powder can capping device, using the powder can capping device according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, the conveyor belt (20) sequentially transports the can bodies, and when the can bodies reach the driving disc (71) and are stuck in the receiving groove (711), the driving disc (71) rotates to push the can bodies onto the processing disc (50); S2, using a laser sensor (60) to detect the top of the tank body, if there is a cover plate, the tank body is moved to the next station, if there is no cover plate, an alarm is sounded; S3, the can body with the cover plate arrives at the next station, and the cover plate is pressed and fastened onto the can body using the fixing assembly (90) and the pressing assembly (80); S4, then the can with the cover plate installed is moved back to the conveyor belt (20), and transported by the conveyor belt (20), thereby completing the can body capping work.

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