Can shoulder adjustment forming mechanism, forming method and application in can production field

Abstract

The present invention relates to the technical field of can production, and in particular to a can shoulder adjustment molding mechanism, a molding method and applications in the field of can production. The can shoulder adjustment molding mechanism comprises a molding component and a transfer component, the molding component comprises a first rotating disk and a second rotating disk, a connecting shaft is provided between the first rotating disk and the second rotating disk; an array-distributed extrusion device is provided on the first rotating disk, and an array-distributed necking module is provided on the second rotating disk; the transfer component comprises a transfer star wheel, an array-distributed transfer trough is provided on the transfer star wheel, symmetrically distributed adsorption components are provided on the transfer trough, a movable trough is provided between two adsorption components on the same transfer trough, and a moving component is provided inside the movable trough; the present invention arranges a detection component, a support component and a moving component, and after the necking of the can body is completed, the support component and the detection component are used to perform wrinkle detection on the can neck.

Description

Technical Field

[0001] The invention relates to the technical field of can production, and in particular to a can shoulder regulating forming mechanism, a forming method and applications in the can production field. Background Art

[0002] Cans are widely made of aluminum. The production process mainly includes: coil conveying, cup punching and blanking, stretching and forming, cleaning and drying, surface color printing, inner wall spraying, overall drying and neck shrinking and flanging. Cup punching and blanking, stretching and flanging all need to be processed on the mold. Among them, the diameter reduction treatment of the can is mainly to reduce the neck of the can (i.e. neck reduction), which can enhance the pressure resistance and sealing of the can body and prevent deformation or leakage due to extrusion during transportation and storage. At the same time, the neck reduction treatment can also make the appearance of the can more concise and smooth, in line with modern aesthetic standards.

[0003] The Chinese invention patent with application number CN201911165520.7 discloses a can necking machine, including a necking mechanism and a feeding mechanism, the necking mechanism includes a base, a rotating shaft, a support seat, a mold, and a lifting plate, the base is provided with a spiral plate, the lower end of the support seat is provided with a lifting rod, the lower end of the lifting rod cooperates with the spiral plate, the support seat corresponds to the mold one by one, the upper end of the mold is provided with a connecting rod, and the upper end of the connecting rod cooperates with the lifting plate; the feeding mechanism includes a conveyor belt, and star wheels are provided at the front and rear ends of the necking mechanism, and grooves are provided on the outer cylindrical surfaces of the first star wheel and the second star wheel. During the working process, the can body is conveyed by the conveyor belt, and then the can is conveyed to the support seat in the necking mechanism through the first star wheel, and the rotating shaft rotates to drive the support seat and the mold to rotate. Since the lower end of the lifting rod cooperates with the spiral plate, the lifting rod continuously rises during the rotation of the rotating shaft, and the mouth of the can on the support seat is continuously squeezed by the mold to complete the necking of the mouth of the can.

[0004] Although the above documents have been able to complete the necking of the can mouth by installing a necking mechanism, this process is not without challenges. A significant technical difficulty is the uneven thickness of the metal on the neck of the can in the circumferential direction. This unevenness is particularly prominent during the necking process, which directly leads to the formation of wrinkles in the neck area of ​​the can body. If these wrinkles are not properly handled and the flange sealing operation is directly performed, the risk of leakage will be greatly increased, because the wrinkled area will often become a weak point of the seal, reducing the sealing performance of the overall structure.

[0005] On the other hand, in order to improve production efficiency, the cans need to run at high speed during the transfer process between the transfer station and the neck forming station, but this also causes the cans to be subjected to the dual effects of centrifugal force and inertial force during the transfer process, resulting in significant shaking. Especially at the critical moment when the cans enter the neck forming station from the transfer station, this shaking is particularly severe, greatly increasing the risk of the cans getting stuck between the two workstations. This jam not only disrupts the smoothness of the production line, but may also cause physical damage to the cans themselves, which in turn has an adverse effect on the final product quality.

[0006] It is necessary to invent a can shoulder adjustment forming mechanism, a forming method and its application in the field of can production to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide a can shoulder adjustment forming mechanism, a forming method and applications in the field of can production, so as to solve the technical problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A can shoulder adjustment forming mechanism, which is used for forming and manufacturing a can body of an easy-pull can, comprises a forming component and a transfer component, wherein the forming component and the transfer component are arranged alternately, and the can body of the easy-pull can runs between the forming component and the transfer component;

[0010] The molding assembly includes a first rotating disk and a second rotating disk, a connecting shaft is provided between the first rotating disk and the second rotating disk, and the connecting shaft is connected to an external driving device;

[0011] The first rotating disk is provided with extrusion devices distributed in an array, and the second rotating disk is provided with necking modules distributed in an array, and the positions of the necking modules correspond to the positions of the extrusion devices;

[0012] The transfer assembly includes a transfer star wheel, on which a transfer trough distributed in an array is opened, on which adsorption members distributed symmetrically are arranged, and the adsorption members are fixedly connected to the transfer trough by bolts, and between two adsorption members on the same transfer trough is a movable trough, and inside the movable trough is a movable assembly;

[0013] The moving component includes a moving part arranged inside a movable groove, a mounting block is provided at the output end of the moving part, a pushing part is provided on the top of the mounting block, a moving plate is provided at the output end of the pushing part, an array of negative pressure suction holes is provided on the top of the moving plate, and the negative pressure suction holes are connected to a connecting pipe arranged below the moving plate.

[0014] Preferably, the extrusion device comprises an annular block, an end of the annular block away from the second rotating disk is provided with an abutment plate, an end of the abutment plate away from the annular block is provided with a pusher, the pusher array is distributed on the circumference of the abutment plate, and the end of the pusher away from the abutment plate is fixedly connected to the first rotating disk;

[0015] An air suction hole is arranged in the middle of the abutting plate, an air suction pipe is arranged at one end of the air suction hole, and an end of the air suction pipe away from the abutting plate is connected to an external air suction device.

[0016] Preferably, the necking module includes a necking outer mold, one end of the necking outer mold is provided with a connecting tube, the middle part of the connecting tube is rotatably connected to the second rotating disk, the end of the connecting tube away from the necking outer mold is provided with a first rotating wheel, the first rotating wheel is located on a side of the second rotating disk away from the first rotating disk, and a first driving device is provided on the outer side of the first rotating wheel.

[0017] Preferably, an expanded neck portion and a contracted neck portion are provided inside the contracted outer mold, the expanded neck portion is located at the outermost end of the contracted outer mold, the contracted neck portion is located in the middle of the contracted outer mold, and a detection component is provided on the contracted neck portion, and the detection component is used to detect the can neck of the can body.

[0018] Preferably, the necking module further comprises a necking inner mold, the necking inner mold is located inside the necking outer mold, a through air hole is arranged inside the necking inner mold, one end of the necking inner mold is provided with telescopic parts distributed in an array, one end of the telescopic parts away from the necking inner mold is provided with a mounting cylinder, the mounting cylinder is rotatably connected with the connecting cylinder, and one end of the mounting cylinder passing through the connecting cylinder is provided with a second rotating wheel;

[0019] A ventilation groove is arranged inside the installation tube, one end of the ventilation groove facing the necking inner mold is connected with the through air hole through a telescopic tube, and the other end of the ventilation groove is connected with an external air source.

[0020] Preferably, an array-distributed support assembly is provided on the outer wall of the necked inner mold, and the support assembly includes a mounting groove opened on the necked inner mold, and symmetrically distributed movable parts are provided inside the mounting groove, and the output ends of the movable parts are commonly connected to a support plate.

[0021] Preferably, the detection component includes a mounting hole opened on the neck portion, and the mounting holes are distributed in an array on the neck portion. An elastic member is provided inside the mounting hole, one end of the elastic member is connected to the mounting hole, and the other end of the elastic member is connected to a pressure block. An electromagnetic member is provided between the pressure block and the mounting hole, and the electromagnetic member is used to drive the pressure block to move back and forth inside the mounting hole.

[0022] Preferably, the side of the transfer star wheel is provided with mounting plates distributed in an array, the position of the mounting plates corresponds to the position of the transfer trough, and the mounting plates are provided with connecting ports distributed in an array, and the connecting ports are all connected to an external air source through a connecting pipe;

[0023] The connection port located in the middle of the installation plate is connected to the connection pipe through a connection hose, and the connection ports located at both ends of the installation plate are connected to the adsorption member.

[0024] A method for forming a can, the method comprising the following steps:

[0025] S1. Initial processing stage: After the internal spraying operation is completed, the can body is immediately sent into the drying device by the conveying device. The drying device performs drying and preheating treatment on the can body to ensure the smooth progress of the subsequent process. After the drying is completed, the can body is transferred to the transfer star wheel through the conveying channel, ready to enter the next process.

[0026] S2, transfer and positioning stage: The transfer star wheel starts to rotate, and the adsorption parts on it firmly fix the can body. As the star wheel continues to rotate, when a specific transfer trough and the extrusion device are aligned to the same plane, the adsorption parts on the transfer trough stop working, and the suction holes on the abutment plate start to adsorb the can body, so that the can body can be smoothly transferred from the transfer star wheel to the molding component.

[0027] S3, forming and necking stage: After the can body is placed in the forming assembly, as the forming assembly rotates, the extrusion device begins to push the can body toward the necking module. With the close cooperation between the necking outer mold and the necking inner mold, the opening part of the can body bends toward the middle, thereby forming the required can neck on the top of the can body.

[0028] S4, inspection and smoothing stage: When the necking outer mold and the necking inner mold are working, the inspection component of the necking outer mold works synchronously to detect wrinkles on the can neck. At the same time, the support component in the necking inner mold provides necessary support for the can neck. Under the coordinated action of the inspection component and the support component, the wrinkled parts of the can neck are effectively smoothed to ensure that the appearance quality of the can neck meets the standard.

[0029] Technical effects and advantages of the present invention:

[0030] 1. When the tank body is transferred to the forming assembly, the movable plate guides the tank body to engage with the annular block on the abutment plate to achieve preliminary positioning. Subsequently, the negative pressure suction hole fixes the tank body to the abutment plate to avoid shaking due to centrifugal force and inertial force, which may cause the tank body to be unable to smoothly enter the forming assembly or get stuck between two workstations. In addition, the engagement of the tank body with the annular block reduces the phenomenon of tank body deflection during transportation and avoids the "horseshoe-shaped" defect during necking, which affects the quality. The dual safeguards of engagement and adsorption ensure that the tank body enters the forming assembly smoothly and accurately, providing an important guarantee for the smooth progress of subsequent processing.

[0031] 2. The present invention provides a detection component, a support component and a moving component. After the necking of the tank body is completed, the support component and the detection component are used to detect wrinkles on the tank neck. When wrinkles appear, the support plate abuts and supports the bottom of the wrinkle area, and the pressure block quickly acts on the top of the wrinkle area to implement effective extrusion and smoothing, thereby realizing rapid repair of the wrinkle area; when a jam occurs between the tank body and the necking module, the tank body is smoothly moved to the preset second receiving station, and the moving component immediately starts the pulling operation, while the pressure block cooperates to perform the knocking operation. Under the dual synergistic effect of pulling and knocking, the stuck tank body can be smoothly detached from the necking module, effectively avoiding its unnecessary impact on the subsequent production process, and ensuring the continuity and efficiency of the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of a can body in the prior art;

[0033] Figure 2 It is a schematic diagram of the combined structure of the forming component and the transfer component of the present invention;

[0034] Figure 3 A schematic diagram of the combined structure of the forming component and the transfer component of the present invention from another perspective;

[0035] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0036] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0037] Figure 6 It is a structural schematic diagram of the molding assembly of the present invention;

[0038] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at C in the middle;

[0039] Figure 8 It is a structural schematic diagram of the mobile assembly of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the necking module of the present invention;

[0041] Fig.10 It is a schematic diagram of the cross-sectional structure of the necking module of the present invention;

[0042] Fig.11 It is a schematic diagram of the working state of the can body of the present invention when the can body is necking;

[0043] Fig.12 It is a schematic diagram of the working state of the can of the present invention when it is running between the forming component and the transfer component.

[0044] In the figure: 100, tank body; 1001, tank neck; 1002, tank body; 1003, tank bottom; 1, molding assembly; 101, first rotating disk; 102, second rotating disk; 103, connecting shaft; 104, extrusion device; 1041, annular block; 1042, abutment plate; 1043, pusher; 1044, suction pipe; 105, necking module; 1051, necking outer mold; 10511, expansion neck; 10512, necking neck; 1052, connecting tube; 1053, first rotating wheel; 1054, necking inner mold; 1055, through-hole; 1056, extension Retractable part; 1057, mounting cylinder; 1058, second rotating wheel; 2, detection component; 201, mounting hole; 202, elastic member; 203, pressure block; 3, support component; 301, mounting groove; 302, support plate; 303, movable part; 4, transfer component; 401, transfer star wheel; 402, transfer groove; 403, adsorption member; 404, bolt member; 405, movable groove; 5, moving component; 501, moving part; 502, mounting block; 503, push member; 504, moving plate; 505, negative pressure suction hole; 506, connecting pipe; 6, mounting plate; 7, connecting port. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] Reference Figures 1 to 12 As shown, a can shoulder adjustment molding mechanism is used to mold and manufacture a can body 100, including a molding component 1 and a transfer component 4. The molding component 1 and the transfer component 4 are staggered, and the can body 100 runs between the molding component 1 and the transfer component 4.

[0047] The transfer assembly 4 is mainly used to drive the can body 100 to flow smoothly between the forming assemblies 1. The forming assembly 1 is mainly used to accurately extrude the can body 100 in circulation so that the top of the can body 100 forms a can neck 1001. This step lays an important foundation for the subsequent flanging operation, which facilitates the further processing and forming of the can body 100.

[0048] The forming assembly 1 comprises a first rotating disk 101 and a second rotating disk 102 . A connecting shaft 103 is provided between the first rotating disk 101 and the second rotating disk 102 . The connecting shaft 103 is connected to an external driving device.

[0049] The first rotating disk 101 and the second rotating disk 102 are arranged on both sides of the transfer star wheel 401. Such a layout is intended to effectively prevent any possible collision with the tank body 100 located on the transfer star wheel 401 when the two rotate, thereby ensuring the smoothness and safety of the operation process.

[0050] The first rotating disk 101 is provided with extrusion devices 104 distributed in an array, and the second rotating disk 102 is provided with necking modules 105 distributed in an array. The positions of the necking modules 105 correspond to the positions of the extrusion devices 104.

[0051] The extrusion device 104 firstly absorbs the bottom 1003 of the can body 100, and then pushes the can body 100 toward the necking module 105. During this process, the opening part at the top of the can body 100 is guided into the interior of the necking module 105, thereby completing the precise forming of the can neck 1001.

[0052] The transfer component 4 includes a transfer star wheel 401, on which an array of transfer troughs 402 are provided, and on which symmetrically distributed adsorption components 403 are provided. The adsorption components 403 are fixedly connected to the transfer trough 402 by bolts 404. A movable trough 405 is provided between two adsorption components 403 on the same transfer trough 402, and a movable component 5 is provided inside the movable trough 405.

[0053] The adsorbent 403 includes an arc-shaped plate, on which air holes distributed in an array are opened, inside of which air pressure sensors are arranged, and the air holes are connected to an external air source.

[0054] The current position of the tank body 100 is identified by detecting the change in the value fed back by the air pressure sensors distributed on the arc plate, and it is judged whether the tank body 100 is skewed, so that timely adjustments can be made.

[0055] The moving component 5 includes a moving part 501 arranged inside the movable groove 405, a mounting block 502 is provided at the output end of the moving part 501, a pushing part 503 is provided at the top of the mounting block 502, a moving plate 504 is provided at the output end of the pushing part 503, an array-distributed negative pressure suction holes 505 are provided on the top of the moving plate 504, and the negative pressure suction holes 505 are connected to a connecting pipe 506 arranged below the moving plate 504.

[0056] The length of the moving plate 504 is shorter than the length of the adsorbing member 403 .

[0057] After the tank body 100 enters the transfer trough 402, the negative pressure suction hole 505 on the moving plate 504 will be activated in time to firmly adsorb the tank body 100. If the adsorption component 403 detects that the tank body 100 is deflected on the transfer trough 402 at this time, the system will respond quickly, first controlling the adsorption component 403 to stop the adsorption force on the tank body 100, and then controlling the moving component 501 to push the mounting block 502 to move accordingly according to the detected offset distance. The mounting block 502 indirectly drives the moving plate 504 and the negative pressure suction hole 505 thereon to move together through the pushing component 503, thereby achieving fine-tuning of the position of the tank body 100 and ensuring that the tank body 100 returns to the correct position.

[0058] Reference Figure 2 and Fig.11 As shown, the extrusion device 104 includes an annular block 1041, and an abutment plate 1042 is provided at one end of the annular block 1041 away from the second rotating disk 102, and a pushing member 1043 is provided at one end of the abutment plate 1042 away from the annular block 1041. The pushing members 1043 are arranged in an array on the surrounding side of the abutment plate 1042, and one end of the pushing member 1043 away from the abutment plate 1042 is fixedly connected to the first rotating disk 101.

[0059] The annular block 1041 corresponds to the diameter of the tank bottom 1003 of the tank body 100 . When the suction hole adsorbs the tank body 100 , the annular block 1041 is engaged with the tank bottom 1003 .

[0060] The pushing member 1043 includes an electric push rod, and the pushing member 1043 pushes the can body 100 to move toward the necking mold through the abutment plate 1042 and the annular block 1041 .

[0061] An air suction hole is provided in the middle of the abutting plate 1042 , an air suction pipe 1044 is provided at one end of the air suction hole, and an end of the air suction pipe 1044 away from the abutting plate 1042 is connected to an external air suction device.

[0062] The air intake pipe 1044 includes a bellows or a flexible hose. When the pusher 1043 pushes the abutment plate 1042 to move toward the necking module 105, the air intake pipe 1044 can be extended and retracted to avoid the air intake pipe 1044 being pulled rigidly and causing damage to the air intake pipe 1044.

[0063] Reference Figures 3 to 11 As shown, the necking module 105 includes a necking outer mold 1051, one end of the necking outer mold 1051 is provided with a connecting tube 1052, the middle part of the connecting tube 1052 is rotatably connected to the second rotating disk 102, and the end of the connecting tube 1052 away from the necking outer mold 1051 is provided with a first rotating wheel 1053, the first rotating wheel 1053 is located on a side of the second rotating disk 102 away from the first rotating disk 101, and a first driving device is provided on the outer side of the first rotating wheel 1053.

[0064] Reference Figures 9 to 11 As shown, the interior of the necked outer mold 1051 is provided with an expanded neck 10511 and a necked neck 10512, the expanded neck 10511 is located at the outermost end of the necked outer mold 1051, the necked neck 10512 is located in the middle of the necked outer mold 1051, and a detection component 2 is provided on the necked neck 10512, and the detection component 2 is used to detect the can neck 1001 of the can body 100.

[0065] The diameter of the expanded neck 10511 is larger than the diameter of the opening of the tank body 100, which facilitates the tank body 100 to enter the interior of the necked outer mold 1051. The cross-section of the necked neck 10512 is conical, and the transition between the necked neck 10512 and the expanded neck 10511 is rounded to achieve a smooth transition of the tank body 100 from the expanded neck 10511 to the necked neck 10512.

[0066] The constricted parts 10512 arranged on the same second rotating disk 102 have the same cone angle, ensuring the unity and coordination of the operations at the same level. However, there is a gradual change pattern between the constricted parts 10512 distributed on different second rotating disks 102, that is, the cone angle gradually decreases from the second rotating disk 102 at the starting end to the second rotating disk 102 at the ending end. This design ingenuity may be intended to optimize the mechanical properties of the overall structure, showing a high degree of technicality and practicality.

[0067] Reference Figures 9 to 11As shown, the necking module 105 also includes a necking inner mold 1054, which is located inside the necking outer mold 1051. The interior of the necking inner mold 1054 is provided with a through air hole 1055, and one end of the necking inner mold 1054 is provided with an array-distributed telescopic member 1056, and the end of the telescopic member 1056 away from the necking inner mold 1054 is provided with a mounting cylinder 1057, and the mounting cylinder 1057 is rotatably connected to the connecting cylinder 1052. The end of the mounting cylinder 1057 that passes through the connecting cylinder 1052 is provided with a second rotating wheel 1058, and the outer side of the second rotating wheel 1058 is provided with a second driving device.

[0068] The length of the installation tube 1057 is greater than the length of the connecting tube 1052 , and the first rotating wheel 1053 located on the connecting tube 1052 and the second rotating wheel 1058 located on the connecting tube 1052 do not contact each other.

[0069] The telescopic member 1056 includes an electric push rod. When the tank body 100 moves toward the necking module 105, the telescopic member 1056 pushes the necking inner mold 1054 to move, so that the necking inner mold 1054 enters the interior of the tank body 100 and introduces compressed air into the interior of the tank body 100. The compressed air plays a supporting role inside the tank body 100, thereby preventing the tank body 100 from collapsing under pressure when the tank body 100 is undergoing a necking operation.

[0070] A ventilation groove is provided inside the mounting tube 1057, and one end of the ventilation groove facing the necking inner mold 1054 is connected to the through air hole 1055 through a telescopic tube, and the other end of the ventilation groove is connected to an external air source.

[0071] Reference Figure 10 to Figure 11 As shown, an array-distributed support assembly 3 is provided on the outer wall of the necked inner mold 1054, and the support assembly 3 includes a mounting groove 301 opened on the necked inner mold 1054, and symmetrically distributed movable parts 303 are provided inside the mounting groove 301, and the output ends of the movable parts 303 are commonly connected to the support plate 302.

[0072] The movable part 303 includes an electric push rod, and the output ends of the movable part 303 are hinged to the support plate 302. By controlling the elongation of the two movable parts 303 inside the same installation groove 301, the support plate 302 can be placed in a deflected state, and the deflection angle of the support plate 302 corresponds to the conical angle of the neck portion 10512.

[0073] Referring to Figures 1 to 2, the detection component 2 includes a mounting hole 201 opened on the neck portion 10512, and the mounting holes 201 are distributed in an array on the neck portion 10512. An elastic member 202 is provided inside the mounting hole 201, and one end of the elastic member 202 is connected to the mounting hole 201, and the other end of the elastic member 202 is connected to a pressure block 203. An electromagnetic member is provided between the pressure block 203 and the mounting hole 201, and the electromagnetic member is used to drive the pressure block 203 to move back and forth inside the mounting hole 201.

[0074] The elastic member 202 is provided with a pressure sensor, and the pressure sensor is used to detect the expansion and contraction amount of the elastic member 202 .

[0075] The elastic member 202 includes an elastic telescopic rod, one end of which is connected to the mounting hole 201 , and the other end of which is connected to the pressing block 203 .

[0076] It should be noted that the mounting hole 201 and the inner side surface of the neck portion 10512 are in a relatively vertical state.

[0077] Reference Figures 3 to 5 As shown, an array-distributed mounting plate 6 is provided on the side of the transfer star wheel 401, and the position of the mounting plate 6 corresponds to the position of the transfer trough 402. The mounting plate 6 is provided with an array-distributed connecting port 7, and the connecting port 7 is connected to an external air source through a connecting pipe.

[0078] The connection port 7 located in the middle of the mounting plate 6 is connected to the connection pipe 506 through a connection hose, and the connection ports 7 located at both ends of the mounting plate 6 are connected to the adsorption member 403 .

[0079] Reference Figure 1 As shown, the can body 100 of the can (particularly the two-piece can) in the prior art mainly includes a can body 1002 , a can neck 1001 is provided on the top of the can body 1002 , and a can bottom 1003 is provided on the bottom of the can body 1002 .

[0080] Before the can body 100 is subjected to the necking operation, it is necessary to first perform an internal spraying operation on the can body 100 to ensure that its inner surface is covered with a uniform protective coating. Subsequently, the can body 100 that has completed the internal spraying is sent to the drying device through a conveying device, and the drying device performs a drying operation on the can body 100. During this process, the can body 100 is simultaneously preheated to optimize the physical state of the can body 100 and to fully prepare for the subsequent necking operation. The preheating treatment is particularly important, which can effectively reduce the risk of deformation of the top of the can body 100 when the necking mold performs the necking process on the top of the can body 100, thereby ensuring the smooth progress of the necking operation and the quality of the finished can body 100.

[0081] It should be noted that the main purpose of the internal spray coating of the can body 100 is to form a uniform, high-adhesion coating inside the can to protect the inside of the can body 100 from corrosion by the contents, especially for carbonated beverages, fruit juices and other beverages containing acidic or corrosive ingredients. This coating is very important. It can effectively isolate the metal inside the can body 100 from the contents and prevent metal corrosion, thereby extending the service life of the can and ensuring the safety and taste of the beverage.

[0082] When the drying operation of the can body 100 is completed, the can body 100 is transported to the transfer star wheel 401 through the transport channel, and the transfer star wheel 401 transports the can body 100 to the molding component 1, and the molding component 1 performs a necking operation on the can body 100.

[0083] Since the forming assembly 1 and the transfer assembly 4 are arranged in an interlaced manner, the movement trajectory of the tank 100 between the forming assembly 1 and the transfer assembly 4 can be referred to as Fig.12 As shown, when the can body 100 enters the transfer groove 402 of the transfer star wheel 401, the adsorption member 403 inside the transfer groove 402 and the negative pressure suction hole 505 on the movable plate 504 adsorb the can body 1002 of the can body 100. As the transfer star wheel 401 continues to operate, the can body 100 adsorbed on the transfer groove 402 is transported to the first receiving station (i.e., Fig.12 (S1 station in the ).

[0084] When the tank body 100 is transported by the transport star wheel 401 , the control system can determine whether the tank body 100 itself is in a displacement state by detecting the value of the air pressure sensor distributed on the adsorption member 403 .

[0085] When the control system detects that some of the air pressure sensors distributed on the adsorption parts 403 in a transfer trough 402 fail to detect valid values, it indicates that the tank body 100 in the transfer trough 402 is in an offset state. The offset direction and offset distance of the tank body 100 can be determined based on the position and number of the air pressure sensors that fail to detect valid values.

[0086] When the control system detects that the tank body 100 is offset in the transfer trough 402, the control system controls the adsorption component 403 in the transfer trough 402 to stop the adsorption operation on the tank body 100. At the same time, the negative pressure suction hole 505 on the moving block still performs the adsorption operation on the tank body 100 to prevent the tank body 100 from losing the adsorption of the adsorption component 403 and detaching from the transfer trough 402 according to the offset direction of the tank body 100. At the same time, the moving part 501 inside the movable groove 405 is controlled to drive the installation block 502 to move. The moving distance of the installation block 502 is consistent with the offset distance of the tank body 100. When the installation block 502 moves, the pushing part 503 synchronously drives the moving plate 504 to move in the area between the two adsorption parts 403. The moving plate 504 can achieve fine adjustment of the position of the tank body 100 to ensure that the tank body 100 returns to the correct position and avoids the tank body 100 from colliding with the extrusion device 104 or the necking module 105 when entering the S1 station, thereby affecting the normal process of the tank body 100 necking operation.

[0087] It should be noted that: due to the influence of the adsorption part 403 and the negative pressure suction hole 505, the tank body 100 only has two situations of front and rear displacement along the transfer star wheel 401. At the same time, since the moving part 501 inside the movable groove 405 has two working states of extension and contraction, the extension and contraction of the moving part 501 can drive the moving plate 504 to move in the front and rear direction of the transfer star wheel 401.

[0088] When the can body 100 on the transfer trough 402 is transported to the first receiving station (i.e. Fig.12 The control system controls the two adsorption parts 403 on the transfer trough 402 to stop adsorbing the can body 100, and controls the movable part 501 to drive the movable plate 504 to move, so that the bottom 1003 of the can body 100 is engaged with the annular block 1041 on the abutment plate 1042, and then controls the suction pipe 1044 on the abutment plate 1042 to adsorb the bottom 1003 of the can body 100, and controls the negative pressure suction hole 505 on the movable plate 504 to stop working. At this time, the can body 100 is transferred to the molding component 1.

[0089] During the process of transferring the can body 100 from the transfer trough 402 to the inside of the forming component 1, the can body 100 is firstly guided by the movable plate 504 to engage with the annular block 1041 on the abutment plate 1042, thereby achieving preliminary positioning and alignment of the can body 100 and the extrusion device 104. Subsequently, the negative pressure suction hole 505 is used to effectively adsorb the can bottom 1003 to ensure that the can body 100 is firmly fixed on the abutment plate 1042. The key to this step is to prevent the can body 100 from shaking violently when it enters the forming component 1 from the transfer star wheel 401 under the combined action of centrifugal force and inertial force, thereby avoiding the problem that the can body 100 cannot smoothly enter the forming component 1 or is stuck between two workstations.

[0090] More importantly, since the can body 100 has been previously engaged with the annular block 1041 on the abutment plate 1042, this process also significantly reduces the deflection that may occur during the transfer of the can body 100 to the molding assembly 1. The deflection will not only affect the accuracy of the subsequent processing of the can body 100, but is also more likely to cause the can neck 1001 to form an undesirable "horseshoe-shaped" defect during the necking operation, thereby affecting the product quality. Therefore, the dual safeguard of engagement and adsorption plays a vital role in ensuring that the can body 100 enters the molding assembly 1 smoothly and accurately, and the subsequent processing process proceeds smoothly.

[0091] After the tank body 100 is fixed on the abutment plate 1042, with the continuous operation of the connecting shaft 103, the first rotating disk 101 and the second rotating disk 102 synchronously drive the extrusion device 104 and the necking module 105 to continue to operate. During this process, the control system controls the pushing member 1043 to gradually extend, and the pushing member 1043 pushes the tank body 100 to move closer to the necking module 105 through the abutment plate 1042. At the same time, the telescopic member 1056 is controlled to extend, and the telescopic member 1056 pushes the necking inner mold 1054 into the interior of the tank body 100, and compressed air is filled into the tank body 100 through the through-hole 1055. The compressed air can effectively support the tank body 100 to prevent it from collapsing due to pressure during the necking operation.

[0092] As the pusher 1043 continues to extend, the can body 100 smoothly enters between the outer necking mold 1051 and the inner necking mold 1054. The necking neck 10512 on the outer necking mold 1051 is in extrusion contact with the top of the can body 100. Since the cross section of the necking neck 10512 is conical, after the top of the can body 100 contacts the necking neck 10512, the opening portion of the top of the can body 100 gradually shrinks toward the middle to form a conical can neck 1001 under the influence of the conical cross section. At the same time, since the can body 100 has been preheated by the drying device before the molding operation, when the can body 100 is necked, the risk of deformation of the top of the can body 100 when the necking mold is necking the top of the can body 100 can be effectively reduced, thereby ensuring the smooth necking operation and the quality of the finished can body 100.

[0093] It should be noted that: after the extension amount setting value of the telescopic member 1056 pushes the necking inner mold 1054 into the interior of the can body 100, the support assembly 3 located on the necking inner mold 1054 and the necking neck 10512 on the necking outer mold 1051 are on the same plane.

[0094] When the extension of the pushing member 1043 reaches the set value, the tank body 100 completes the necking operation, and the control system controls the through-hole 1055 to stop supplying compressed air to the inside of the tank body 100, and at the same time controls the movable member 303 on the necking inner mold 1054 to extend, and the movable member 303 pushes the support plate 302 to move in the direction of the necking neck 10512, so that the support plate 302 is finally fitted with the inner wall of the tank neck 1001 of the tank body 100, and the tank body 100 is supported by the support plate 302 and the movable member 303, and then the first driving device is controlled to drive the first rotating wheel 1053 to rotate, and the first rotating wheel 1053 drives the necking outer mold 1051 to rotate synchronously by driving the connecting tube 1052, and during the rotation of the necking outer mold 1051, the detection component 2 located at the necking neck 10512 synchronously detects the tank neck 1001 of the tank body 100.

[0095] It should be noted that: since the output end of the movable part 303 is hinged to the support plate 302, by controlling the elongation of the two movable parts 303 inside the same mounting groove 301, the support plate 302 can be placed in a skewed state, which is convenient for the support plate 302 to fit with the inner wall of the tank neck 1001 of the tank body 100; the side of the support plate 302 away from the movable part 303 is arc-shaped, which is convenient for the support plate 302 to contact with the inner wall of the tank neck 1001.

[0096] It should be noted that: since the mounting hole 201 and the necking portion 10512 are perpendicular to each other in this example, and the portion of the pressing block 203 extending out of the mounting hole 201 is rounded, the detection component 2 will not cause too much obstruction to the movement of the tank body 100 when the tank body 100 is necked.

[0097] When the necking outer mold 1051 rotates, the control system can determine whether there are wrinkles on the tank neck 1001 of the tank body 100 by detecting the expansion and contraction amount of the elastic member 202 .

[0098] When the necking outer mold 1051 rotates, if the control system detects that the expansion and contraction of the elastic member 202 exceeds the set value when it runs to a certain area of ​​the can neck 1001, it means that wrinkles have appeared in this area on the can neck 1001, resulting in obvious fluctuations in the expansion and contraction of the elastic member 202 when passing through this area. This is due to the uneven thickness of the metal on the can neck 1001 in the circumferential direction. This unevenness is particularly prominent during the necking operation, which directly leads to the formation of wrinkles in the neck area of ​​the can body 100.

[0099] When the control system detects that wrinkles appear somewhere on the neck 1001 of the can, it controls the first rotating wheel 1053 to stop rotating, controls the second driving device to drive the second rotating wheel 1058 to rotate, and the second rotating wheel 1058 drives the necking inner mold 1054 to rotate through the mounting tube 1057 and the telescopic member 1056, so that the support plate 302 on the necking inner mold 1054 finally abuts against the area where the wrinkles are located, and then controls the first rotating wheel 1053 to rotate back and forth, so that the pressure block 203 corresponding to the wrinkle position reciprocates in the wrinkle area, and at the same time controls the electromagnetic member corresponding to the pressure block 203 to apply pressure to the pressure block 203, so that the pressure of the pressure block 203 on the wrinkle area increases, and under the dual action of the support plate 302 and the pressure block 203, the wrinkle area of ​​the can neck 1001 is smoothed, so as to avoid the wrinkle area of ​​the can neck 1001 not being properly handled, and directly performing the flanging and capping operation, resulting in reduced sealing performance of the can body 100.

[0100] It should be noted that when the second driving device drives the second rotating wheel 1058 to rotate, the support plate 302 on the necking inner mold 1054 can be first recovered to the inside of the movable groove 405, and after the necking inner mold 1054 completes the rotation, the support plate 302 is controlled to press against the inside of the can neck 1001.

[0101] It should be noted that torque sensors are provided inside the first driving device and the second driving device. Through the cooperation of the torque sensor and the pressure sensor, the area where the wrinkles are located can be determined, so that the second rotating wheel 1058 can drive the support plate 302 to move to the area where the wrinkles are located.

[0102] It should be noted that the electromagnetic component includes a magnetic block arranged on the pressure block 203 and an electromagnetic block arranged on the mounting hole 201. By controlling the direction and magnitude of the current passed into the electromagnetic block, the pressure block 203 can be controlled to move back and forth inside the mounting hole 201. The electromagnetic component belongs to the prior art and will not be described in detail here.

[0103] When the outer necking mold 1051 rotates, if the control system detects that the elastic member 202 has expanded or contracted beyond the threshold value during operation, it indicates that a jam has occurred between the tank body 100 and the necking module 105. This is due to the uneven thickness of the metal of the tank neck 1001 in the circumferential direction, which results in stress concentration during the necking process. The thinner part is prone to generate greater stress locally due to its weaker ability to resist deformation, and these stresses may cause the tank body 100 to get stuck or deform in the necking mold.

[0104] When the control system detects that the can body 100 is stuck in the necking mold, the control system first controls the extrusion device 104 to retract, and at the same time controls the suction pipe 1044 to stop adsorbing the can bottom 1003. At the same time, since the support component 3 still supports the can neck 1001 of the can body 100, the can body 100 will not fall off the forming component 1. As the forming component 1 continues to operate, the can body 100 gradually moves to the second receiving station (i.e. Fig.12 At the S2 station in the drawing, the negative pressure suction hole 505 on the movable plate 504 is controlled to absorb the can body 1002 of the can body 100, and the movable member 501 is controlled to drive the movable plate 504 to move toward the extrusion device 104. During the movement of the movable plate 504, the negative pressure suction hole 505 cooperates to pull the can body 100.

[0105] After the negative pressure suction hole 505 on the movable plate 504 adsorbs the tank body 1002 of the tank body 100, the control system controls the movable part 303 inside the mounting groove 301 to drive the support plate 302 to return to the mounting groove 301, and controls the electromagnetic part to drive the pressing block 203 to move back and forth inside the mounting hole 201, and the pressing block 203 knocks the outer wall of the tank neck 1001. Under the dual action of the movable plate 504 and the pressing block 203, the tank body 100 is able to detach from the necking module 105 and enter the second transfer star wheel 401. When the transfer star wheel 401 drives the tank body 100 to move to the bottom of the transfer star wheel 401, the pushing part 503 is controlled to extend quickly, and at the same time, the negative pressure suction hole 505 is stopped from adsorbing the tank body 1002 of the tank body 100, and the pushing part 503 discharges the tank body 100 from the transfer star wheel 401.

[0106] It should be noted that: under normal circumstances, when the tank body 100 completes the necking operation, the extrusion device 104 drives the tank body 100 to move backward, so that the tank neck 1001 is separated from the necking module 105. When the tank body 100 gradually moves to the second receiving station (i.e. Fig.12 After reaching the S2 station in the tank, the extrusion device 104 stops adsorbing the tank body 100, and the negative pressure suction hole 505 and the adsorption member 403 adsorb the tank body 1002 of the tank body 100, and the tank body 100 is transferred to the second transfer star wheel 401, and the second transfer star wheel 401 performs the transfer operation on the tank body 100.

[0107] The present invention provides a detection component 2, a support component 3 and a moving component 5. After the tank body 100 is necked, the support component 3 first implements internal stable support on the tank neck 1001 to ensure the stability of the structure. Subsequently, the detection component 2 performs wrinkle detection on the tank neck 1001. Once wrinkles are found, the response measures are immediately initiated: the support plate 302 is used to abut and support the bottom of the wrinkle area, and at the same time, the pressure block 203 quickly acts on the top of the wrinkle area to implement effective squeezing and smoothing, thereby achieving rapid repair of the wrinkle area.

[0108] When a jam occurs between the tank body 100 and the necking module 105, the system will first ensure that the extrusion device 104 is safely out of contact with the tank body 100, which is intended to prevent possible collision accidents and ensure the safety of the equipment. Subsequently, when the tank body 100 moves smoothly to the preset second receiving station, the moving component 5 immediately starts the pulling operation, and the pressing block 203 cooperates to perform the knocking operation. Under the dual synergistic effect of pulling and knocking, the jammed tank body 100 can be smoothly separated from the necking module 105, effectively avoiding its unnecessary impact on the subsequent production process, and ensuring the continuity and efficiency of the production line.

[0109] The present invention also provides a method for forming an easy-pull can, the method comprising the following steps:

[0110] S1, initial processing stage: after the internal spraying operation is completed, the can body 100 is immediately sent into the drying device by the conveying device. The drying device performs drying and preheating treatment on the can body 100 to ensure the smooth progress of the subsequent process. After the drying is completed, the can body 100 is transferred to the transfer star wheel 401 through the conveying channel, ready to enter the next process.

[0111] S2, transfer and positioning stage: the transfer star wheel 401 starts to rotate, and the adsorption member 403 thereon firmly fixes the can body 100. As the star wheel continues to rotate, when a specific transfer trough 402 and the extrusion device 104 are aligned to the same plane, the adsorption member 403 on the transfer trough 402 stops working, and the suction hole on the abutment plate 1042 is started to adsorb the can body 100, so that the can body 100 can be smoothly transferred from the transfer star wheel 401 to the molding component 1.

[0112] S3, forming and necking stage: after the can body 100 is placed in the forming assembly 1, as the forming assembly 1 rotates, the extrusion device 104 starts to push the can body 100 to move toward the necking module 105. With the close cooperation between the necking outer mold 1051 and the necking inner mold 1054, the opening part of the can body 100 is bent toward the middle, thereby forming the required can neck 1001 at the top of the can body 100.

[0113] S4, detection and smoothing stage: when the necking outer mold 1051 and the necking inner mold 1054 are working, the detection component 2 of the necking outer mold 1051 works synchronously to detect wrinkles on the can neck 1001. At the same time, the support component 3 in the necking inner mold 1054 provides necessary support for the can neck 1001. Under the coordinated action of the detection component 2 and the support component 3, the wrinkled parts of the can neck 1001 are effectively smoothed to ensure that the appearance quality of the can neck 1001 meets the standard.

[0114] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0115] Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A can shoulder adjustment forming mechanism, which is used for forming and manufacturing a can body of an easy-pull can, and is characterized by: It comprises a forming assembly (1) and a transfer assembly (4), wherein the forming assembly (1) and the transfer assembly (4) are arranged alternately, and the can body of the can runs between the forming assembly (1) and the transfer assembly (4); The molding assembly (1) comprises a first rotating disk (101) and a second rotating disk (102), a connecting shaft (103) is provided between the first rotating disk (101) and the second rotating disk (102), and the connecting shaft (103) is connected to an external driving device; The first rotating disk (101) is provided with extrusion devices (104) distributed in an array, and the second rotating disk (102) is provided with necking modules (105) distributed in an array, and the positions of the necking modules (105) correspond to the positions of the extrusion devices (104); The transfer assembly (4) comprises a transfer star wheel (401), the transfer star wheel (401) is provided with transfer slots (402) distributed in an array, the transfer slots (402) are provided with symmetrically distributed adsorption members (403), the adsorption members (403) are fixedly connected to the transfer slots (402) via bolt members (404), a movable slot (405) is provided between two adsorption members (403) on the same transfer slot (402), and a movable assembly (5) is provided inside the movable slot (405); The moving assembly (5) comprises a moving member (501) arranged inside a movable groove (405); a mounting block (502) is arranged at the output end of the moving member (501); a pushing member (503) is arranged at the top of the mounting block (502); a moving plate (504) is arranged at the output end of the pushing member (503); negative pressure suction holes (505) distributed in an array are arranged at the top of the moving plate (504); the negative pressure suction holes (505) are connected to a connecting pipe (506) arranged below the moving plate (504).

2. The tank shoulder adjustment and forming mechanism according to claim 1, characterized in that: The extrusion device (104) comprises an annular block (1041), an end of the annular block (1041) away from the second rotating disk (102) is provided with an abutment plate (1042), an end of the abutment plate (1042) away from the annular block (1041) is provided with a pushing member (1043), an array of the pushing members (1043) is distributed around the abutment plate (1042), and an end of the pushing member (1043) away from the abutment plate (1042) is fixedly connected to the first rotating disk (101); An air suction hole is provided in the middle of the abutment plate (1042), an air suction pipe (1044) is provided at one end of the air suction hole, and an end of the air suction pipe (1044) away from the abutment plate (1042) is connected to an external air suction device.

3. The tank shoulder adjustment and forming mechanism according to claim 2, characterized in that: The necking module (105) comprises a necking outer mold (1051), one end of the necking outer mold (1051) is provided with a connecting tube (1052), the middle part of the connecting tube (1052) is rotatably connected to the second rotating disk (102), the end of the connecting tube (1052) away from the necking outer mold (1051) is provided with a first rotating wheel (1053), the first rotating wheel (1053) is located on a side of the second rotating disk (102) away from the first rotating disk (101), and a first driving device is provided on the outer side of the first rotating wheel (1053).

4. The tank shoulder adjustment and forming mechanism according to claim 3, characterized in that: An expanded neck portion (10511) and a contracted neck portion (10512) are provided inside the contracted outer mold (1051); the expanded neck portion (10511) is located at the outermost end of the contracted outer mold (1051); the contracted neck portion (10512) is located in the middle of the contracted outer mold (1051); a detection component (2) is provided on the contracted neck portion (10512); the detection component (2) is used to detect the neck portion of the can body of the can.

5. The tank shoulder adjustment and forming mechanism according to claim 3, characterized in that: The necking module (105) further comprises a necking inner mold (1054), the necking inner mold (1054) being located inside the necking outer mold (1051), the necking inner mold (1054) being provided with a through pore (1055) inside, one end of the necking inner mold (1054) being provided with telescopic members (1056) distributed in an array, one end of the telescopic members (1056) being away from the necking inner mold (1054) being provided with a mounting tube (1057), the mounting tube (1057) being rotatably connected to the connecting tube (1052), and one end of the mounting tube (1057) passing through the connecting tube (1052) being provided with a second rotating wheel (1058); A ventilation groove is provided inside the installation cylinder (1057), one end of the ventilation groove facing the necking inner mold (1054) is connected to the through-hole (1055) via a telescopic tube, and the other end of the ventilation groove is connected to an external air source.

6. The tank shoulder adjustment and forming mechanism according to claim 5, characterized in that: An array of distributed support components (3) are provided on the outer wall of the necked inner mold (1054), the support components (3) comprising a mounting groove (301) provided on the necked inner mold (1054), symmetrically distributed movable parts (303) being provided inside the mounting groove (301), and output ends of the movable parts (303) being commonly connected to a support plate (302).

7. The tank shoulder adjustment and forming mechanism according to claim 4, characterized in that: The detection component (2) comprises a mounting hole (201) formed on the neck portion (10512), the mounting holes (201) being distributed in an array on the neck portion (10512), an elastic member (202) being provided inside the mounting hole (201), one end of the elastic member (202) being connected to the mounting hole (201), the other end of the elastic member (202) being connected to a pressing block (203), an electromagnetic member being provided between the pressing block (203) and the mounting hole (201), the electromagnetic member being used to drive the pressing block (203) to reciprocate inside the mounting hole (201).

8. The tank shoulder adjustment and forming mechanism according to claim 4, characterized in that: The side of the transfer star wheel (401) is provided with mounting plates (6) distributed in an array, the position of the mounting plates (6) corresponds to the position of the transfer trough (402), and the mounting plates (6) are provided with connecting ports (7) distributed in an array, and the connecting ports (7) are all connected to an external air source through a connecting pipe; The connection port (7) located in the middle of the mounting plate (6) is connected to the connection pipe (506) via a connection hose, and the connection ports (7) located at both ends of the mounting plate (6) are connected to the adsorption member (403).

9. A method for forming a can, the method using the can shoulder adjustment forming mechanism according to claim 4, characterized in that: The molding method comprises the following steps: S1, initial processing stage: after the internal spraying operation is completed, the can body is immediately sent to the drying device by the conveying device. The drying device performs drying and preheating treatment on the can body to ensure the smooth progress of the subsequent process. After the drying is completed, the can body is transferred to the transfer star wheel (401) through the conveying channel to prepare for the next process; S2, transfer and positioning stage: the transfer star wheel (401) starts to rotate, and the adsorption member (403) thereon firmly fixes the can body. As the star wheel continues to rotate, when the specific transfer trough (402) and the extrusion device (104) are aligned to the same plane, the adsorption member (403) on the transfer trough (402) stops working, and the suction hole on the abutment plate (1042) starts to adsorb the can body, so that the can body can be smoothly transferred from the transfer star wheel (401) to the molding component (1); S3, forming and necking stage: after the can body is placed on the forming assembly (1), as the forming assembly (1) rotates, the extrusion device (104) starts to push the can body towards the necking module (105), and under the close cooperation between the necking outer mold (1051) and the necking inner mold (1054), the opening of the can body is bent towards the middle, thereby forming the desired can neck at the top of the can body; S4, detection and smoothing stage: When the necking outer mold (1051) and the necking inner mold (1054) are working, the detection component (2) of the necking outer mold (1051) works synchronously to detect wrinkles on the can neck. At the same time, the support component (3) in the necking inner mold (1054) provides necessary support for the can neck. Under the coordinated action of the detection component (2) and the support component (3), the wrinkled part of the can neck is effectively smoothed, ensuring that the appearance quality of the can neck meets the standard.

10. An application of the can shoulder adjustment and forming mechanism as claimed in claim 4 in the field of can production.

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