A rotary thread sealing device for aluminum cans and aluminum caps

Abstract

This invention discloses a rotary threaded sealing device for aluminum cans and aluminum lids, relating to the technical field of liquid packaging machinery. The invention comprises a rotating mechanism; multiple capping mechanisms are vertically connected to the rotating mechanism; the rotating mechanism can drive the capping mechanisms in orbital motion; and the rotating mechanism is connected to a rotating mechanism for driving the capping mechanisms in rotational motion, as well as a lifting mechanism for driving the capping mechanisms in vertical motion. This invention not only has a rational structural design and is convenient to use, but also effectively improves the threaded sealing performance of aluminum cans and aluminum lids, thus possessing high market application value.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid packaging machinery, and in particular relates to a rotary thread sealing device for aluminum cans and aluminum lids. Background Art

[0002] In recent years, the rapid development of the beverage industry and changes in consumer consumption concepts have led to higher requirements for the visual appearance of beverage packaging. To meet the needs of the beverage market, aluminum cans are becoming increasingly popular among consumers due to their many advantages, such as lightness, unbreakable properties, opacity, recyclability, and low cost. Therefore, aluminum can filling lines have gradually become a major market in the beverage packaging industry. To better meet this market demand, the sealing of aluminum cans and aluminum lids made of similar materials has become extremely demanding and challenging. Due to the special soft and thin nature of aluminum cans and the similar hardness and softness of the lid and can body, extremely high requirements are placed on the deformation and pressure of the aluminum can and aluminum lid sealing. Currently, conventional sealing equipment in the process of sealing aluminum cans and aluminum lids may cause deformation of the can body due to excessive pressure or fail to achieve the sealing effect due to insufficient pressure. This leads to a high defective rate of aluminum can and aluminum lid sealing, affecting the sealing efficiency of aluminum cans and aluminum lids. Therefore, it is urgent to develop a rotary thread sealing device for aluminum cans and aluminum lids to solve the above problems. Summary of the Invention

[0003] The present invention provides a rotary thread sealing device for aluminum cans and aluminum lids, the purpose of which is to solve the technical problems raised in the above background technology.

[0004] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention relates to a rotary threaded sealing device for aluminum cans and aluminum caps, comprising a rotating mechanism; a plurality of capping mechanisms are vertically connected to the rotating mechanism; the rotating mechanism can drive the capping mechanisms to perform orbital motion; the rotating mechanism is connected to a rotating mechanism for driving the capping mechanisms to perform rotational motion, and a lifting mechanism for driving the capping mechanisms to perform up and down motion.

[0006] As a preferred technical solution of the present invention, the rotating mechanism includes a horizontally arranged support plate; a vertically arranged drive shaft is rotatably inserted on the support plate; the upper end of the drive shaft is connected to a first motor module; the first motor module is fixed on the upper surface of the support plate; a carrier plate is fixedly sleeved on the outer periphery of the lower end of the drive shaft; the upper surface of the carrier plate is provided with a plurality of accommodating holes for installing the covering mechanism, evenly distributed along the annular direction.

[0007] As a preferred technical solution of the present invention, the sealing mechanism includes a support cylinder vertically fixed at the lower end of the accommodating hole; a transmission cylinder connected to the rotary mechanism is rotatably inserted in the support cylinder; an extension cylinder is coaxially fixed to the lower end of the transmission cylinder; the outer periphery of the extension cylinder has an inverted conical surface; a guide rod is slidably inserted in the extension cylinder; the upper end of the guide rod is slidably inserted in the transmission cylinder; a positioning column is coaxially fixed to the lower end of the guide rod; the outer periphery of the positioning column is provided with a mounting sleeve; a plurality of first connecting columns are vertically fixed to the lower surface of the mounting sleeve; a plurality of The lower ends of the first connecting columns are connected by a limiting ring; two pairs of grooves are vertically opened on the circumferential outer wall of the mounting sleeve; the upper and lower ends of the two pairs of grooves pass through the top and bottom surfaces of the mounting sleeve respectively; the two pairs of grooves are rotatably connected with supporting columns; the upper ends of the two pairs of supporting columns are connected with push-pull rods with H-shaped structures; rollers are rotatably connected between the two upper ends of the push-pull rods; the circumferential wheel surface of the roller conflicts with the conical surface; the lower ends of one pair of the supporting columns are connected with symmetrically arranged threaded hobs; the lower ends of the other pair of the supporting columns are connected with symmetrically arranged folding hobs.

[0008] As a preferred technical solution of the present invention, the upper end of the guide rod is vertically connected to a first spring; the upper end of the first spring is connected to a movable column; and the movable column is slidably fitted in the transmission cylinder.

[0009] As a preferred technical solution of the present invention, both lower ends of the push-pull rod are rotatably connected to the upper end of the supporting column; the middle arm of the push-pull rod is slidably inserted with a first sliding column arranged obliquely; the lower end of the first sliding column is fixed on the upper end surface of the supporting column; the outer periphery of the first sliding column is sleeved with a second spring; the upper end of the second spring is fixed on the upper end of the first sliding column; the lower end of the second spring is fixed on the middle arm of the push-pull rod.

[0010] As a preferred technical solution of the present invention, the lower end of the supporting column has a vertically arranged through groove; a second sliding column is arranged in the through groove; a third spring is sleeved on the outer periphery of the second sliding column; the lower end of the third spring is fixed on the lower surface of the through groove; the upper end of the third spring is fixed on the upper end of the second sliding column; the lower end of the second sliding column is inserted into the lower surface of the through groove and passes through the lower end of the supporting column; two thread rollers and two folding rollers are respectively fixed on the lower ends of the two pairs of second sliding columns.

[0011] As a preferred technical solution of the present invention, the rotating mechanism includes a second motor module fixed on the upper surface of the support plate; the output shaft of the second motor module passes through the support plate and is horizontally fixed with a first gear; the first gear is engaged with an outer gear ring coaxially arranged with the drive shaft; the outer gear ring is rotatably connected to the lower surface of the support plate; an inner gear ring is coaxially arranged below the outer gear ring; the inner gear ring and the outer gear ring are connected by a plurality of vertically arranged second connecting columns; the inner gear ring is rotatably connected to the upper surface of the carrier disk; the inner gear ring is engaged with a plurality of second gears; the second gear is rotatably connected to the upper surface of the carrier disk; the second gear is engaged with a third gear; the third gear is fixedly sleeved on the outer periphery of the transmission cylinder.

[0012] As a preferred technical solution of the present invention, the lifting mechanism includes a cylindrical cam coaxially sleeved on the outer periphery of the driving shaft; the upper end of the cylindrical cam is fixed to the lower surface of the support plate; a plurality of lifting blocks corresponding to the guide rods are arranged on the circumferential side of the cylindrical cam; the lifting block is connected to a first limiting wheel and a second limiting wheel by rotating from top to bottom close to a surface of the cylindrical cam; the circumferential wheel surface of the first limiting wheel conflicts with the upper surface of the flange of the cylindrical cam; the circumferential wheel surface of the second limiting wheel conflicts with the lower surface of the flange of the cylindrical cam; a push-pull column is vertically fixed to the lower end of the lifting block; the lower end of the push-pull column is inserted into the transmission cylinder and fixed to the upper end of the movable column.

[0013] The present invention has the following beneficial effects:

[0014] The invention can realize that when the aluminum can with the aluminum cap enters the capping mechanism with the transmission, the rotary mechanism drives the capping mechanism to perform revolution motion, while the lifting mechanism drives the capping mechanism to perform up and down motion, and the rotary mechanism drives the capping mechanism to perform rotation motion, thereby realizing that the capping mechanism completes the actions of capping, thread forming and folding, and achieves the threaded sealing effect of the aluminum can and aluminum cap. It not only effectively improves the threaded sealing performance of aluminum cans and aluminum caps with similar materials, but also reduces costs for customers to a greater extent, greatly meets market demand, increases market supply, and solves the problems of aluminum can body deformation caused by excessive pressure or failure to achieve the capping effect due to insufficient pressure.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 The present invention is a structural schematic diagram of a rotary thread sealing device for aluminum cans and aluminum lids.

[0018] Figure 2 It is a structural schematic diagram of the rotating mechanism of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the connection between the support plate, the outer gear ring and the cylindrical cam of the present invention.

[0020] Figure 4 Schematic diagram of the relative positions of the drive shaft, the internal gear ring and the cylindrical cam of the present invention.

[0021] Figure 5 It is a structural schematic diagram of the connection between the capping mechanism and the lifting mechanism of the present invention.

[0022] Figure 6 It is a structural schematic diagram of the capping mechanism of the present invention.

[0023] Figure 7 It is a structural schematic diagram of the extension tube of the present invention.

[0024] Figure 8 It is a schematic structural diagram of the connection between the extension tube, the guide rod and the installation sleeve of the present invention.

[0025] Figure 9 It is a structural schematic diagram of the guide rod of the present invention.

[0026] Figure 10 It is a structural schematic diagram of the installation sleeve of the present invention.

[0027] Figure 11 It is a schematic structural diagram of the connection between the bearing column and the push-pull rod of the present invention.

[0028] Figure 12 It is a structural schematic diagram of the lifting mechanism of the present invention.

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] 1-rotation mechanism, 2-capping mechanism, 3-slewing mechanism, 4-lifting mechanism, 101-support plate, 102-drive shaft, 103-first motor module, 104-carrying plate, 105-accommodating hole, 201-support cylinder, 202-transmission cylinder, 203-extension cylinder, 204-conical surface, 205-guide rod, 206-positioning column, 207-mounting sleeve, 208-first connecting column, 209-limiting ring, 210-groove, 211-carrying column, 212-push-pull rod, 213-roller, 214-thread hob, 215-folding hob, 216-first spring, 217-movable column, 218-second spring, 219-third spring, 301-second motor module, 302-first gear, 303-outer gear ring, 304-inner gear ring, 305-second connecting column, 306-second gear, 307-third gear, 401-cylindrical cam, 402-lifting block, 403-first limiting wheel, 404-second limiting wheel, 405-push-pull column. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Specific embodiment one:

[0033] See also Figure 1As shown, the present invention is a rotary thread sealing device for aluminum cans and aluminum caps, comprising a rotating mechanism 1; a plurality of capping mechanisms 2 are vertically connected to the rotating mechanism 1; the rotating mechanism 1 can drive the capping mechanism 2 to perform revolution; the rotating mechanism 1 is connected with a rotating mechanism 3 for driving the capping mechanism 2 to perform rotational motion and a lifting mechanism 4 for driving the capping mechanism 2 to perform up and down motion. When in use, when the aluminum can passes through the exit of the cap conveying channel, the aluminum can is driven by the transmission to accurately hang the aluminum cap on the mouth of the aluminum can during the bottle conveying motion, thereby ensuring one bottle and one cap. The aluminum can with the aluminum cap hung on it is smoothly adjusted to the mouth of the aluminum can by the capping guide plate, so that the aluminum cap of the aluminum can will not fall off or bend due to uncontrollable external factors before entering the capping mechanism 2, effectively avoiding the problem of crooked cap and missing cap after the final sealing; when the aluminum can with the aluminum cap hung on it enters the capping mechanism 2 with the transmission, the capping mechanism 2 is driven by the rotating mechanism 1 to While in revolution, the lifting mechanism 4 drives the capping mechanism 2 to move up and down, and the rotary mechanism 3 drives the capping mechanism 2 to rotate, so that the capping mechanism 2 can complete the actions of pressing the cap, thread forming and folding the edge, thereby achieving the threaded sealing effect of the aluminum can and the aluminum cap. It not only effectively improves the performance of the threaded sealing of aluminum cans and aluminum caps with similar materials, but also reduces the cost for customers to a greater extent, and at the same time greatly meets the market demand, increases the market launch, and also avoids the deformation and damage of aluminum cans made of soft and easily deformed materials. Specific embodiment two:

[0035] Based on the specific embodiment 1, Figure 1-5 As shown, the rotating mechanism 1 includes a horizontally arranged support plate 101; a vertically arranged drive shaft 102 is inserted on the support plate 101; the drive shaft 102 and the support plate 101 are rotatably matched through conventional roller bearings in this field; the upper end of the drive shaft 102 is connected to a first motor module 103; the first motor module 103 is a conventional structure in this field, which is composed of a conventional gear reducer and a differential motor in this field; the first motor module 103 is screwed to the upper surface of the support plate 101; a carrying disk 104 is sleeved on the outer periphery of the lower end of the drive shaft 102; the carrying disk 104 is screwed to the outer periphery of the drive shaft 102; the upper surface of the carrying disk 104 is evenly distributed along the annular direction with a plurality of accommodating holes 105 for installing the covering mechanism 2. When in use, the capping mechanism 2 is vertically installed in the accommodating hole 105, and the first motor module 103 is used to drive the driving shaft 102 to rotate, so that the carrying plate 104 drives the capping mechanism 2 to rotate around the driving shaft 102, thereby realizing the orbital motion of the capping mechanism 2. Specific embodiment three:

[0037] Based on the specific embodiment 2, Figure 5-11As shown, the capping mechanism 2 includes a support cylinder 201 vertically fixed at the lower end of the receiving hole 105; a transmission cylinder 202 connected to the rotary mechanism 3 is inserted into the support cylinder 201; the transmission cylinder 202 rotates with the support cylinder 201; an extension cylinder 203 is coaxially fixed to the lower end of the transmission cylinder 202; the outer periphery of the extension cylinder 203 has an inverted conical surface 204; a guide rod 205 is slidably inserted into the extension cylinder 203; the upper end of the guide rod 205 is slidably inserted into the The first spring 216 is vertically connected to the upper end of the guide rod 205; the upper end of the first spring 216 is connected to the movable column 217; the movable column 217 is slidably fitted in the transmission cylinder 202; the lower end of the guide rod 205 is coaxially fixed with a positioning column 206 for pressing the aluminum cover; the outer periphery of the positioning column 206 is fixed with a mounting sleeve 207; the lower surface of the mounting sleeve 207 is vertically fixed with a plurality of first connecting columns 208; the plurality of first connecting columns 208 The lower ends of the mounting sleeve 207 are connected by a limiting ring 209; the first connecting column 208 is fixedly connected to the limiting ring 209; the inner edge of the limiting ring 209 has a protruding portion bent upward; two pairs of grooves 210 are vertically opened on the circumferential outer wall of the mounting sleeve 207; the upper and lower ends of the two pairs of grooves 210 pass through the top and bottom surfaces of the mounting sleeve 207 respectively; the two pairs of grooves 210 are rotatably connected to the supporting columns 211; the upper ends of the two pairs of supporting columns 211 are connected to the push-pull rods with an H-shaped structure 212; a roller 213 is rotatably connected between the two upper ends of the push-pull rod 212; the circumferential wheel surface of the roller 213 conflicts with the conical surface 204; the lower ends of a pair of supporting columns 211 are connected with symmetrically arranged threaded hobs 214; the threaded hobs 214 are conventional structures in this field, and they are circular disc-shaped structures; the lower ends of another pair of supporting columns 211 are connected with symmetrically arranged folding hobs 215; the folding hobs 215 are conventional structures in this field, and they are circular disc-shaped structures. During use, while the rotating mechanism 1 drives the sealing mechanism 2 to perform orbital motion, the lifting mechanism 4 drives the guide rod 205 to move up and down in the transmission cylinder 202, prompting the positioning column 206 to drive the thread hob 214 and the folding hob 215 to move up and down through the mounting sleeve 207 and the supporting column 211. At the same time, since the circumferential wheel surface of the roller 213 conflicts with the conical surface 204, the thread hob 214 and the folding hob 215 approach or move away from the aluminum cover, and the rotary mechanism 3 drives the transmission cylinder 202 to rotate in the support cylinder 201, prompting the thread hob 214 and the folding hob 215 to rotate around the aluminum cover, thereby realizing the actions of pressing the cover, thread forming and folding.

[0038] Among them Figure 11As shown, the lower ends of the push-pull rod 212 are both rotatably connected to the upper end of the support column 211; a first sliding post is slidably inserted into the middle arm of the push-pull rod 212; the lower end of the first sliding post is fixed to the upper end surface of the support column 211; a second spring 218 is sleeved around the outer periphery of the first sliding post; the upper end of the second spring 218 is fixed to the upper end of the first sliding post; and the lower end of the second spring 218 is fixed to the middle arm of the push-pull rod 212. During use, as the roller 213 rolls up and down on the conical surface 204, the push-pull rod 212 rotates around the support column 211. Then, under the elastic action of the second spring 218, the first sliding post pulls the support column 211 to rotate within the groove 210, thereby causing the thread cutter 214 and the hem cutter 215 to move closer to or away from the aluminum cover.

[0039] Among them Figure 11 As shown, the lower end of the support column 211 has a vertical through-groove; a second slide column is disposed within the through-groove; a third spring 219 is sleeved around the outer circumference of the second slide column; the lower end of the third spring 219 is fixed to the lower surface of the through-groove; the upper end of the third spring 219 is fixed to the upper end of the second slide column; the lower end of the second slide column is inserted into the lower surface of the through-groove and passes through the lower end of the support column 211; two thread cutters 214 and two hemming cutters 215 are respectively fixed to the lower ends of the two pairs of second slide columns. During use, the thread cutters 214 and hemming cutters 215 are elastically mounted on the support column 211 using the second slide column and the third spring 219, effectively ensuring the effective use of the thread cutters 214 and hemming cutters 215. Specific embodiment four:

[0041] Based on the specific embodiment 3, Figure 1-6As shown, the rotary mechanism 3 includes a second motor module 301 fixed to the upper surface of the support plate 101; the second motor module 301 is a conventional structure in the field, which is composed of a gear reducer and a differential motor; the output shaft of the second motor module 301 passes through the support plate 101 and is horizontally fixed with a first gear 302; the first gear 302 is meshed with an outer gear ring 303 coaxially arranged with the drive shaft 102; the outer gear ring 303 is rotatably connected to the lower surface of the support plate 101; an inner gear ring 303 is coaxially arranged below the outer gear ring 303 4; the inner gear ring 304 and the outer gear ring 303 are connected by a plurality of vertically arranged second connecting columns 305; the first connecting column 208 is screwed to the inner gear ring 304 and the outer gear ring 303; the inner gear ring 304 is rotatably connected to the upper surface of the carrier plate 104; the inner gear ring 304 is meshed with a plurality of second gears 306; the second gears 306 are rotatably connected to the upper surface of the carrier plate 104; the second gears 306 are meshed with a third gear 307; the third gear 307 is fixedly sleeved on the outer periphery of the transmission cylinder 202. During use, the transmission cylinder 202 is driven to rotate by the second motor module 301 through the first gear 302, the outer gear ring 303, the first connecting column 208, the inner gear ring 304, the second gear 306 and the third gear 307, so that the thread hob 214 and the folding hob 215 rotate around the aluminum can, and the folding hob 215 fits the lower edge of the aluminum can mouth. Under the action of the third spring 219, the thread hob 214 and the folding hob 215 complete the actions of capping, thread forming and folding, so that the entire process of thread forming and folding sealing is achieved while completing the capping, thereby achieving the thread sealing effect of the aluminum can and aluminum lid; at the same time, due to the particularity of the material, the requirements for the top pressure and the side pressure of the hob are extremely high, and the accuracy of the number of threads formed is also greatly improved. Therefore, the second motor module 301 is used to fine-tune the rotation speed of the capping mechanism 2 to ensure that the thread forming of the aluminum can and the aluminum lid can form a sealing thread without damaging the outer shape of the aluminum can body, thereby achieving the best sealing effect. Specific embodiment five:

[0043] Based on the specific embodiment 4, Figure 2-6 and Figure 12As shown, the lifting mechanism 4 includes a cylindrical cam 401 coaxially sleeved on the outer periphery of the driving shaft 102; the cylindrical cam 401 is set to a secondary rolling stroke curve; the upper end of the cylindrical cam 401 is fixed to the lower surface of the support plate 101; the flange of the cylindrical cam 401 includes a first arc-shaped edge, a second arc-shaped edge with a horizontal position lower than the first arc-shaped edge, and a pair of symmetrically arranged inclined edges; the upper ends of the two inclined edges are respectively connected to the opposite ends of the first arc-shaped edge; the lower ends of the two inclined edges are respectively connected to the opposite ends of the second arc-shaped edge; the middle part of the second arc-shaped edge has a semicircular structure The protruding part; a plurality of lifting blocks 402 corresponding to the guide rod 205 are provided on the circumferential side of the cylindrical cam 401; the lifting block 402 is connected to a first limiting wheel 403 and a second limiting wheel 404 which rotate from top to bottom close to a surface of the cylindrical cam 401; the circumferential wheel surface of the first limiting wheel 403 conflicts with the upper surface of the flange of the cylindrical cam 401; the circumferential wheel surface of the second limiting wheel 404 conflicts with the lower surface of the flange of the cylindrical cam 401; a push-pull column 405 is vertically fixed to the lower end of the lifting block 402; the lower end of the push-pull column 405 is inserted into the transmission cylinder 202 and fixed to the upper end of the movable column 217. During use, while the rotating mechanism 1 drives the sealing mechanism 2 to perform orbital motion, the first limiting wheel 403 and the second limiting wheel 404 move on the flange of the cylindrical cam 401, prompting the push-pull column 405 to drive the guide rod 205 to move up and down in the transmission cylinder 202 through the movable column 217 and the first spring 216; in the above process, the cylindrical cam 401 is set to a secondary rolling stroke curve. Due to the soft and thin body of the aluminum can and the similar materials of the aluminum cover and the aluminum can, the side pressure control requirements of the thread hob 214 and the folding hob 215 are extremely high. Therefore, secondary rolling is required to achieve the fit of the thread forming. At the same time, by adjusting the second motor module 301, the number of thread turns can be met while achieving a perfect thread forming effect. The advantage of this structure is that, according to the set cam curve, it can avoid the problem of threaded sealing of aluminum caps and aluminum cans made of similar materials. Through the secondary rolling design of the cylindrical cam 401 and the speed regulation of the second motor module 301, the aluminum can body will not be deformed due to excessive side pressure, nor will the thread forming be poor and the sealing be unqualified due to too small side pressure. This effectively improves the performance of threaded sealing of aluminum cans and aluminum caps made of similar materials, greatly meets the market demand, and at the same time reduces costs for customers to a greater extent and increases market access.

[0044] During the entire process of rotating the assembly around one circle, the capping mechanism 2 completes two thread forming and rolling operations according to the preset curve of the cylindrical cam 401. After the first thread rolling is completed, the curve of the cylindrical cam 401 rises, and the capping mechanism 2 follows the rise. When the thread roller 214 is opened and retracted and the folding roller 215 has not yet left the can body of the aluminum can, the curve of the cylindrical cam 401 drops, the thread roller 214 is tightened, and the second rolling operation is completed. This process ensures that the side pressure of the thread roller 214 and the capping mechanism 2 can complete the perfect thread forming while being within the range of the can body's bearing capacity without deformation.

[0045] Due to the particularity and similarity of the materials of the can body and the lid, the ultimate goal of this structure is to ensure that the can body does not deform and the thread forming effect meets the requirements. The special design of the secondary rolling curve of the cylindrical cam 401 is very likely to lead to insufficient number of thread turns. At this time, it can be compensated by the differential motor of the second motor module 301; the differential motor of the second motor module 301 is started, and the transmission cylinder 202 is driven to rotate through the first gear 302, the outer gear ring 303, the first connecting column 208, the inner gear ring 304, the second gear 306 and the third gear 307, thereby changing the rotation speed of the capping mechanism 2 and adjusting the number of thread forming turns; in addition, due to the particularity of the material of the aluminum can body and the aesthetics of the thread forming, the differential motor of the second motor module 301 needs to be used to fine-tune the number of thread forming turns to achieve the effect of the thread hob 214 rising and falling forming, to ensure that the seal is qualified and presents a perfect appearance.

[0046] While the rotating mechanism 1 drives the capping mechanism 2 to rotate, the capping mechanism 2 moves around the curve of the cylindrical cam 401, and the rotary mechanism 3 drives the capping mechanism 2 to rotate synchronously, starting the first rolling, the thread hob 214 is tightened, and the folding hob 215 is lowered to the edge of the aluminum can body and tightened to complete the thread forming; then the capping mechanism 2 rises along the curve of the cylindrical cam 401, the thread hob 214 opens and retracts, and at this time the folding hob 215 still leaves the can body edge, the cylindrical cam 401 curve begins to descend, and the second rolling begins to ensure the effect of the thread sealing. During this process, the differential motor of the second motor module 301 is adjusted to the optimal frequency so that the number of thread forming turns meets the required number of thread turns of the can mouth.

[0047] In summary, the rotary threaded sealing device for aluminum cans and aluminum lids of the present invention can protect the can body from deformation and damage while ensuring the threaded sealing process of aluminum cans and aluminum lids made of similar materials, and effectively achieve the sealing effect, thereby meeting the needs of customers and the market.

[0048] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A rotary thread sealing device for aluminum cans and aluminum caps, characterized in that: The invention comprises a rotating mechanism (1); a plurality of capping mechanisms (2) are vertically connected to the rotating mechanism (1); the rotating mechanism (1) can drive the capping mechanisms (2) to perform revolution; the rotating mechanism (1) is connected to a rotary mechanism (3) for driving the capping mechanisms (2) to perform rotational movement, and a lifting mechanism (4) for driving the capping mechanisms (2) to perform up and down movement. The rotating mechanism (1) comprises a horizontally arranged support plate (101); a vertically arranged drive shaft (102) is rotatably inserted into the support plate (101); the upper end of the drive shaft (102) is connected to a first motor module (103); the first motor module (103) is fixed to the upper surface of the support plate (101); a carrier disc (104) is fixedly sleeved on the outer periphery of the lower end of the drive shaft (102); a plurality of receiving holes (105) for mounting the capping mechanism (2) are uniformly distributed along an annular direction on the upper surface of the carrier disc (104); The capping mechanism (2) comprises a supporting cylinder (201) vertically fixed at the lower end of the accommodating hole (105); a transmission cylinder (202) connected to the rotary mechanism (3) is rotatably inserted in the supporting cylinder (201); an extension cylinder (203) is coaxially fixed to the lower end of the transmission cylinder (202); the outer periphery of the extension cylinder (203) has an inverted conical surface (204); a guide rod (205) is slidably inserted in the extension cylinder (203); the upper end of the guide rod (205) is slidably inserted in the transmission cylinder (202); a positioning column (206) is coaxially fixed to the lower end of the guide rod (205); the outer periphery of the positioning column (206) is provided with a mounting sleeve (207); a plurality of first connecting columns (208) are vertically fixed to the lower surface of the mounting sleeve (207); a plurality of the first connecting columns (208) are vertically fixed to the lower surface of the mounting sleeve (207); The lower ends of the connecting columns (208) are connected by a limiting ring (209); two pairs of grooves (210) are vertically opened on the circumferential outer wall of the mounting sleeve (207); the upper and lower ends of the two pairs of grooves (210) respectively penetrate the top surface and the bottom surface of the mounting sleeve (207); the two pairs of grooves (210) are rotatably connected with supporting columns (211); the upper ends of the two pairs of supporting columns (211) are connected with push-pull rods (212) with H-shaped structures; a roller (213) is rotatably connected between the two upper ends of the push-pull rods (212); the circumferential wheel surface of the roller (213) is in conflict with the conical surface (204); the lower ends of one pair of the supporting columns (211) are connected with symmetrically arranged threaded rollers (214); the lower ends of the other pair of the supporting columns (211) are connected with symmetrically arranged folding rollers (215).

2. The rotary thread sealing device for aluminum cans and aluminum caps according to claim 1, characterized in that: The upper end of the guide rod (205) is vertically connected to a first spring (216); the upper end of the first spring (216) is connected to a movable column (217); the movable column (217) is slidably fitted in the transmission cylinder (202).

3. A rotary thread sealing device for aluminum cans and aluminum caps according to claim 1 or 2, characterized in that: Both lower ends of the push-pull rod (212) are rotatably connected to the upper end of the supporting column (211); the middle arm of the push-pull rod (212) is slidably inserted with a first sliding column that is inclined; the lower end of the first sliding column is fixed to the upper end surface of the supporting column (211); the outer periphery of the first sliding column is provided with a second spring (218); the upper end of the second spring (218) is fixed to the upper end of the first sliding column; the lower end of the second spring (218) is fixed to the middle arm of the push-pull rod (212).

4. The rotary thread sealing device for aluminum cans and aluminum caps according to claim 3, characterized in that: The lower end of the supporting column (211) has a vertically arranged through groove; a second sliding column is arranged in the through groove; a third spring (219) is sleeved on the outer periphery of the second sliding column; the lower end of the third spring (219) is fixed on the lower surface of the through groove; the upper end of the third spring (219) is fixed on the upper end of the second sliding column; the lower end of the second sliding column is inserted into the lower surface of the through groove and passes through the lower end of the supporting column (211); two thread rollers (214) and two folding rollers (215) are respectively fixed on the lower ends of the two pairs of second sliding columns.

5. The rotary thread sealing device for aluminum cans and aluminum caps according to claim 2, characterized in that: The rotary mechanism (3) comprises a second motor module (301) fixed to the upper surface of the support plate (101); an output shaft of the second motor module (301) passes through the support plate (101) and is horizontally fixed with a first gear (302); an outer gear ring (303) coaxially arranged with the drive shaft (102) is engaged with the first gear (302); the outer gear ring (303) is rotatably connected to the lower surface of the support plate (101); an inner gear ring (304) is coaxially arranged below the outer gear ring (303); the inner gear ring (304) is The gear ring (304) and the outer gear ring (303) are connected via a plurality of vertically arranged second connecting columns (305); the inner gear ring (304) is rotatably connected to the upper surface of the carrier plate (104); the inner gear ring (304) is meshed with a plurality of second gears (306); the second gears (306) are rotatably connected to the upper surface of the carrier plate (104); a third gear (307) is meshed with the second gears (306); and the third gear (307) is fixedly sleeved on the outer periphery of the transmission cylinder (202).

6. A rotary thread sealing device for aluminum cans and aluminum caps according to claim 2 or 5, characterized in that: The lifting mechanism (4) comprises a cylindrical cam (401) coaxially sleeved on the outer periphery of the driving shaft (102); the upper end of the cylindrical cam (401) is fixed to the lower surface of the support plate (101); a plurality of lifting blocks (402) corresponding to the guide rods (205) are provided on the circumference of the cylindrical cam (401); a surface of the lifting block (402) close to the cylindrical cam (401) is connected to a first limiting wheel (403) for rotation from top to bottom. and the second limiting wheel (404); the circumferential wheel surface of the first limiting wheel (403) conflicts with the upper surface of the flange of the cylindrical cam (401); the circumferential wheel surface of the second limiting wheel (404) conflicts with the lower surface of the flange of the cylindrical cam (401); a push-pull column (405) is vertically fixed to the lower end of the lifting block (402); the lower end of the push-pull column (405) is inserted into the transmission cylinder (202) and fixed to the upper end of the movable column (217).

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