A high efficiency sealed packaging can body and a production device thereof

Abstract

This invention relates to the field of packaging can technology, specifically to a high-efficiency sealed packaging can and its production device, comprising a can body, a lid, and a sealing ring. The can body includes a can body body and a can body connecting part, with a screw-fit part on the outer periphery of the can body connecting part. The lid is integrally formed, with its top wall, side walls, and bent part forming a downward-opening receiving cavity to accommodate the can body connecting part, and the fitting part screwing into the screw-fit part. The sealing ring is located on the inner side of the top wall of the lid. When the lid is screwed into place with the can body, the sealing ring is pressed between the top of the top wall and the top of the can body connecting part. This invention, through the integrally formed lid structure, combined with the fitting part formed by the internal bent part and the screw-fit part of the can body, makes the overall structure of the lid compact, strong, and free from welding or assembly weaknesses. At the same time, the sealing ring is precisely pressed between the top of the top wall and the top of the can body connecting part, forming a stable and reliable axial sealing surface, effectively preventing leakage of contents and intrusion of external contaminants.

Description

Technical Field

[0001] This invention relates to the field of packaging can technology, specifically to a high-efficiency sealed packaging can and its production device. Background Technology

[0002] Cans and containers are widely used for storing various items, and their sealing performance is crucial for ensuring the quality of the contents and preventing external contamination. Existing sealed containers typically consist of a can body and a lid, connected by a threaded connection. However, the existing structure still has room for improvement in terms of sealing reliability, ease of assembly, and long-term stability. For example, some lids are prone to deformation after repeated opening and closing, leading to uneven pressure on the sealing ring and affecting the sealing effect. Furthermore, existing production equipment is inefficient and lacks precision in processing specific structures on the lid (such as discontinuous spiral ridges), hindering large-scale production. Therefore, there is a need to develop a highly efficient sealed packaging can and its production equipment. Summary of the Invention

[0003] This invention provides a high-efficiency sealed packaging can and its production device, which solves the technical problems mentioned in the background.

[0004] To achieve the above objectives, the first technical solution provided by this invention is as follows: A high-efficiency sealed packaging container, comprising a container body, a lid, and a sealing ring; The tank body includes a tank body with an upper opening and a tank connecting part located at the upper opening, and the outer periphery of the tank connecting part is provided with a screw-fit part; The lid is integrally formed and has a top wall and a side wall extending downward from its periphery. The inner side of the side wall is provided with a bent part that bends inward and forms a mating part. The top wall, side wall and bent part together form a downward-opening receiving cavity to receive the can body connection part, and the mating part is screwed into the screw-fit part. The sealing ring is located on the inner side of the top wall of the lid. When the lid is screwed into place with the can, the sealing ring is pressed between the top of the connection between the top wall and the can.

[0005] Preferably, the screw-fitting part and the mating part are mutually mating spiral convex rib structures, the spiral convex ribs are discontinuous in the circumferential direction, and the arc length of a single spiral convex rib is greater than the circumferential arc length corresponding to its uniform distribution.

[0006] Preferably, the screw-fit part and the mating part are threaded structures that cooperate with each other.

[0007] Preferably, the inner side of the top wall is provided with a downward protrusion, which together with the side wall defines an annular groove for limiting the sealing ring, and the depth of the annular groove is 1 / 2 to 2 / 3 of the thickness of the sealing ring.

[0008] Preferably, the tank connecting part and the tank body are integrally formed; or, the tank connecting part is an independent component connected to the top of the tank body by a rolling edge process.

[0009] The second technical solution provided by this invention is: A high-efficiency sealing packaging can production apparatus for processing lids includes a machine base, a power box installed at the bottom of the machine base, a hollow fixed base installed on the table surface of the machine base, pressing components for pressing spiral protrusions slidably installed on the four sides of the fixed base, and four positioning mechanisms for positioning the lids installed on the table surface of the machine base, with each of the four positioning mechanisms corresponding to one of the four pressing components. A drive mechanism and a feeding mechanism are installed inside the power box. The feeding mechanism is inserted into the inner cavity of the fixed base and cooperates with the pressing components. The drive mechanism drives the feeding mechanism to reciprocate up and down, causing the pressing components to slide and press the protrusions of the lids on the positioning mechanisms. The pressing assembly includes a sliding rod that penetrates the side wall of the fixed seat. One end of the sliding rod that protrudes from the fixed seat is fitted with an arc-shaped pressing strip that fits against the side wall of the cover. The arc-shaped pressing strip has a pressing groove on its arc-shaped surface. A limit block is installed at the other end of the sliding rod. A spring is sleeved on the outer wall of the sliding rod, and the spring is located between the limit block and the inner wall of the fixed seat. The feeding mechanism includes a first reciprocating lead screw, one end of which is inserted into the inner cavity of the fixed seat and threadedly connected to a first slider. The top of the slider and the bottom of the limiting block are provided with mutually cooperating inclined surfaces.

[0010] Preferably, the positioning mechanism includes a lifting assembly, on which a positioning post that cooperates with the cover is rotatably mounted, and the top of the positioning post protrudes through the machine table surface. The machine table surface has a through hole that cooperates with the positioning post, and a spiral groove is formed on the inner wall of the through hole. The side wall of the positioning post is provided with a limiting protrusion that cooperates with the spiral groove. After the cover completes the pressing of a convex ridge, the lifting assembly drives the positioning post to rise to a certain height, and at the same time, the limiting protrusion and the spiral groove cooperate to drive the positioning post and the cover to rotate at an angle.

[0011] Preferably, the inner diameter of the cover is slightly larger than the outer diameter of the positioning post.

[0012] Preferably, the lifting assembly includes a second reciprocating lead screw, a second slider is threadedly connected to the outer wall of the second reciprocating lead screw, the positioning post is rotatably connected to the top of the second slider, and the positioning post has a clearance hole that cooperates with the second reciprocating lead screw, and the inner diameter of the clearance hole is slightly larger than the diameter of the second reciprocating lead screw.

[0013] Preferably, the drive mechanism includes a drive motor and a rotating shaft. The rotating shaft is rotatably mounted at the bottom of the power box cavity. The first reciprocating screw is rotatably connected to the top of the rotating shaft and is coaxial with the rotating shaft. Both the outer wall of the first reciprocating screw and the outer wall of the rotating shaft are fixedly connected to driven bevel gears. The output end of the drive motor is fixedly connected to an incomplete bevel gear, which is located between two driven bevel gears and meshes with the two driven bevel gears in sequence. The outer wall of the rotating shaft is fixedly connected to a transition gear, and the outer wall of the second reciprocating screw is fixedly connected to a driven gear that meshes with the transition gear.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention utilizes an integrally molded lid structure, combined with an internal bending portion forming a mating part that connects to the screw-on portion of the can body. This results in a compact and high-strength lid structure with no welding or assembly weaknesses. Simultaneously, the sealing ring is precisely pressed between the top wall and the top of the can body connection, forming a stable and reliable axial sealing surface that effectively prevents leakage of contents and intrusion of external contaminants. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the packaging can structure in the case where the can body is an integral structure in this invention; Figure 2 for Figure 1 Enlarged structural diagram at point A; Figure 3 This is a structural diagram of the tank body as an integral structure in this invention; Figure 4 This is a schematic diagram of the structure when the mating part of the lid in this invention has an internal thread; Figure 5 This is a schematic diagram of the structure when the mating part of the lid in this invention is a convex ridge; Figure 6 This is a schematic diagram of the structure of the tank in the present invention when the tank body is a split structure; Figure 7 This is a schematic diagram of the production apparatus of the present invention; Figure 8 This is a schematic diagram of the front section structure of the production apparatus of the present invention; Figure 9 for Figure 8 Enlarged structural diagram at point B; Figure 10This is a schematic diagram of the positioning mechanism and its connecting components in the production apparatus of the present invention; Figure 11 This is a schematic diagram of the feeding mechanism and its connecting components in the production apparatus of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Tank body; 11. Tank body body; 12. Tank body connecting part; 13. Screw-fitting part; 2. Lid; 21. Top wall; 22. Side wall; 223. Annular groove; 23. Receiving cavity; 24. Bending part; 25. Mating part; 3. Sealing ring; 4. Machine base; 5. Power box; 6. Fixed base; 7. Pressing assembly; 71. Sliding rod; 72. Arc-shaped pressing strip; 73. Limiting block; 74. Spring; 8. Positioning mechanism; 81. Lifting assembly; 811. Second reciprocating screw; 812. Second slider; 82. Positioning post; 83. Spiral groove; 84. Limiting protrusion; 9. Drive mechanism; 91. Drive motor; 92. Rotating shaft; 93. Driven bevel gear; 94. Incomplete bevel gear; 95. Transition gear; 96. Driven gear; 10. Feeding mechanism; 101. First reciprocating screw; 102. First slider. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1-6 As shown, the first embodiment of the present invention is as follows: A high-efficiency sealed packaging container includes a container body 1, a lid 2, and a sealing ring 3; The tank body 1 includes a tank body 11 with an upper opening and a tank connecting part 12 located at the upper opening. The outer periphery of the tank connecting part 12 is provided with a screw-fit part 13. The lid 2 is integrally formed. The lid 2 has a top wall 21 and a side wall 22 extending downward from its periphery. The inner side of the side wall 22 is provided with a bent part 24 that bends inward and forms a fitting part 25. The top wall 21, the side wall 22 and the bent part 24 together form a downward opening receiving cavity 23 to receive the can body connecting part 12, and the fitting part 25 is screwed into the screw-fit part 13. The sealing ring 3 is located on the inner side of the top wall 21 of the cover 2. When the cover 2 is screwed into place with the tank body 1, the sealing ring 3 is pressed between the top of the top wall 21 and the top of the tank body connection part 12.

[0020] Specifically, the screw-fitting part 13 and the mating part 25 are mutually mating spiral convex structures. The spiral convexes are discontinuous in the circumferential direction, and the arc length of a single spiral convex is greater than the circumferential arc length corresponding to its uniform distribution.

[0021] As can be seen from the above description, it can significantly reduce the amount of material used and lower production costs while ensuring sufficient screw strength and anti-detachment function; at the same time, the discontinuous convex structure makes the screwing process smoother and the opening and closing feel better.

[0022] Specifically, the screw-fit part 13 and the mating part 25 are threaded structures that fit together.

[0023] Specifically, the inner side of the top wall 21 is provided with a downward protrusion, which together with the side wall 22 defines an annular groove 223 for limiting the sealing ring 3. The depth of the annular groove 223 is 1 / 2 to 2 / 3 of the thickness of the sealing ring 3.

[0024] As can be seen from the above description, the sealing ring is ensured to be firmly fixed before assembly and will not fall off; when the lid is tightened, it can provide just the right amount of deformation space for the sealing ring, so that it can fully fill the tiny gap between the top wall and the tank body connection, without being damaged by excessive compression, thus maintaining excellent sealing performance during long-term use.

[0025] Specifically, the tank connecting part 12 and the tank body 11 are integrally formed; or, the tank connecting part 12 is an independent component connected to the top of the tank body 11 by a rolling edge process.

[0026] like Figures 7-11 As shown, the second embodiment of the present invention is as follows: A high-efficiency sealing packaging can production device for processing lids 2 includes a machine base 4, a power box 5 installed at the bottom of the machine base 4, a hollow fixed seat 6 installed on the table surface of the machine base 4, pressing components 7 for pressing spiral protrusions slidably installed on the four sides of the fixed seat 6, and four positioning mechanisms 8 for positioning the lids 2 installed on the table surface of the machine base 4, with each of the four positioning mechanisms 8 corresponding to one of the four pressing components 7. A drive mechanism 9 and a feeding mechanism 10 are installed inside the power box 5. The feeding mechanism 10 is inserted into the inner cavity of the fixed seat 6 and cooperates with the pressing components 7. The drive mechanism 9 drives the feeding mechanism 10 to reciprocate up and down, causing the pressing components 7 to slide and press the protrusions of the lids 2 on the positioning mechanisms 8. The pressing assembly 7 includes a sliding rod 71 that penetrates the side wall of the fixed base 6. One end of the sliding rod 71 that extends out of the fixed base 6 is fitted with an arc-shaped pressing strip 72 that fits against the side wall of the cover 2. The arc-shaped pressing strip 72 has a pressing groove on its arc surface. The other end of the sliding rod 71 is fitted with a limiting block 73. A spring 74 is sleeved on the outer wall of the sliding rod 71. The spring 74 is located between the limiting block 73 and the inner wall of the fixed base 6. The feeding mechanism 10 includes a first reciprocating lead screw 101. One end of the first reciprocating lead screw 101 is inserted into the inner cavity of the fixed seat 6 and threadedly connected to a first slider 102. The top of the slider 102 and the bottom of the limiting block 73 are provided with mutually cooperating inclined surfaces.

[0027] As described above, when the convex ridge of the lid is pressed, the first reciprocating screw drives the first slider to rise, and the inclined plane pushes the limiting block and sliding rod to slide outward, so that the arc-shaped pressing strip extrudes and forms the side wall of the lid. When the first slider descends, the spring drives the sliding rod to automatically reset. This linkage design realizes the synchronous and automated pressing of lids at four workstations, ensuring the stability and consistency of each pressing action, providing a reliable guarantee for the mass production of high-quality lids, and greatly improving production efficiency.

[0028] Specifically, the positioning mechanism 8 includes a lifting assembly 81, on which a positioning post 82 that cooperates with the cover 2 is rotatably mounted, and the top of the positioning post 82 protrudes from the table surface of the machine platform 4. A through hole that cooperates with the positioning post 82 is opened through the table surface of the machine platform 4, and a spiral groove 83 is opened on the inner wall of the through hole. A limiting protrusion 84 that cooperates with the spiral groove 83 is provided on the side wall of the positioning post 82. After the cover 2 completes the pressing of a convex ridge, the lifting assembly 81 drives the positioning post 82 to rise to a certain height, and at the same time, the limiting protrusion 84 and the spiral groove 83 cooperate to drive the positioning post 82 and the cover 2 to rotate at an angle.

[0029] As can be seen from the above description, when the lifting component drives the positioning column to rise, the limiting protrusion slides along the spiral groove, forcing the positioning column to rotate at a preset angle during the rising process, thereby driving the cover to rotate to the next pressing station. Without the need for a complex CNC system or manual repositioning, it can ensure the precise distribution of each protrusion on the circumference, realize fully automatic continuous indexing pressing, and further improve production efficiency and product yield.

[0030] Specifically, the inner diameter of the cover 2 is slightly larger than the outer diameter of the positioning post 82.

[0031] As can be seen from the above description, when pressing the protruding ridge, there is enough space between the inner wall of the cover and the positioning post to allow the cover to deform, ensuring the normal pressing process.

[0032] Specifically, the lifting assembly 81 includes a second reciprocating lead screw 811, a second slider 812 is threadedly connected to the outer wall of the second reciprocating lead screw 811, a positioning post 82 is rotatably connected to the top of the second slider 812, and the positioning post 82 has a clearance hole that cooperates with the second reciprocating lead screw 811, and the inner diameter of the clearance hole is slightly larger than the diameter of the second reciprocating lead screw 811.

[0033] As can be seen from the above description, the lifting assembly adopts a cooperative structure of a second reciprocating screw and a second slider, which provides stable and controllable lifting power for the positioning column. In addition, the structure is compact, has high space utilization, and the transmission is more stable and reliable, ensuring the accuracy of the lifting action of the positioning column.

[0034] Specifically, the drive mechanism 9 includes a drive motor 91 and a rotating shaft 92. The rotating shaft 92 is rotatably mounted at the bottom of the inner cavity of the power box 5. The first reciprocating screw 101 is rotatably connected to the top of the rotating shaft 92 and is coaxially arranged with the rotating shaft 92. Both the outer wall of the first reciprocating screw 101 and the outer wall of the rotating shaft 92 are fixedly connected to driven bevel gears 93. The output end of the drive motor 91 is fixedly connected to an incomplete bevel gear 94, which is located between the two driven bevel gears 93 and meshes with the two driven bevel gears 93 in sequence. The outer wall of the rotating shaft 92 is fixedly connected to an intermediate gear 95, and the outer wall of the second reciprocating screw 811 is fixedly connected to a driven gear 96 that meshes with the intermediate gear 95.

[0035] As can be seen from the above description: when the incomplete bevel gear meshes with the driven bevel gear on the first reciprocating screw, it drives the pressing assembly to press; when the incomplete bevel gear meshes with the driven bevel gear on the rotating shaft, it drives the second reciprocating screw to rotate through the transition gear and the driven gear, which drives the positioning column to rise and rotate. This realizes the timing control of complex compound actions using only one power source, which greatly simplifies the equipment structure, reduces manufacturing costs and energy consumption, and at the same time ensures the strict sequence and coordination of the pressing and indexing actions.

[0036] like Figures 1-6 As shown, Embodiment 1 of the present invention is as follows: The present invention provides a high-efficiency sealed packaging can, comprising a can body 1, a lid 2, and a sealing ring 3.

[0037] The tank body 1 includes a tank body 11 with an upper opening and a tank connecting portion 12 located at the upper opening. A screw-fit portion 13 is provided on the outer periphery of the tank connecting portion 12. In one embodiment, the tank connecting portion 12 and the tank body 11 can be integrally formed to enhance overall strength (e.g., Figure 3 (as shown) In another embodiment, the tank connecting part 12 can also be a component that is manufactured independently using a crimping process and then connected to the top of the tank body 11. This split structure facilitates production using different materials or processes; for example, the tank body can be made of metal, and the tank connecting part can be made of plastic, etc. Figure 6 (As shown).

[0038] The lid 2 is a one-piece molded structure, for example, made by stamping or injection molding, which ensures the stability and precision of its overall structure. The lid 2 has a top wall 21 and a side wall 22 extending downward from its periphery. The inner side of the side wall 22 is provided with an inwardly bent portion 24, and a mating portion 25 is formed on the bent portion 24. Thus, the top wall 21, the side wall 22 and the bent portion 24 together form a downward-opening receiving cavity 23 for accommodating the can body connecting portion 12. The mating portion 25 is screwed into the screw-fit portion 13 on the can body 1, thereby fixing the lid 2 to the can body 1.

[0039] The specific forms of the screw-fitting part 13 and the mating part 25 can be varied. In a preferred embodiment, they are mutually mating spiral ridge structures. These spiral ridges are discontinuous in the circumferential direction and consist of multiple ridge segments. To ensure the stability of the screw-fit and provide a certain degree of anti-detachment function, the arc length of each individual spiral ridge is designed to be greater than the equal arc length corresponding to its uniform distribution on the circumference. For example, if four ridges are evenly distributed on the circumference, the arc length of each ridge should be greater than 360 / 4 = 90 degrees (e.g., ...). Figure 5 (As shown).

[0040] As another implementation, the screw-fit part 13 and the mating part 25 can also be a conventional continuous thread structure (such as...). Figure 6 (As shown).

[0041] The sealing ring 3 is installed on the inner side of the top wall 21 of the cover 2; preferably, the inner side of the top wall 21 is provided with a downward annular protrusion, which together with the side wall 22 defines an annular groove 223 for limiting and fixing the sealing ring 3 (e.g. Figure 1 , 4 (As shown in Figure 5). The depth of the annular groove 223 is designed to be 1 / 2 to 2 / 3 of the thickness of the sealing ring 3. This depth can both lock the sealing ring 3 in place to prevent it from falling off, and provide sufficient deformation space for the sealing ring 3 when the cover 2 is tightened, so that it is pressed between the top of the top wall 21 and the top of the tank body connection 12, forming an efficient axial seal.

[0042] like Figure 5 , 7 As shown in Figure -11, Embodiment 2 of the present invention is as follows: This embodiment mainly describes the production apparatus used to process the lid 2 in embodiment 1. The inner side of the side wall 22 of the lid 2 needs to be pressed to form a mating part 25 with a spiral ridge structure, and the ridge is a discontinuous structure.

[0043] The production device includes a machine base 4, a power box 5 installed at the bottom of the machine base 4, a hollow fixed seat 6 installed in the center of the table surface of the machine base 4, and pressing components 7 for pressing spiral protrusions are slidably installed on the four sides of the fixed seat 6. Correspondingly, four positioning mechanisms 8 for positioning the cover 2 are installed on the table surface of the machine base 4. These four positioning mechanisms 8 are respectively set to correspond one-to-one with the four pressing components 7.

[0044] The pressing assembly 7 includes a sliding rod 71 that penetrates the side wall of the fixed base 6. An arc-shaped pressing strip 72 is installed at one end of the sliding rod 71 outside the fixed base 6. The arc-shaped surface of the arc-shaped pressing strip 72 fits against the outer surface of the side wall 22 of the cover 2, and a pressing groove for forming a protruding ridge is opened on the arc-shaped surface. A limiting block 73 is installed at one end of the sliding rod 71 inside the fixed base 6. A spring 74 is sleeved on the sliding rod 71. The spring 74 is located between the limiting block 73 and the inner wall of the fixed base 6, and always provides the sliding rod 71 with a force that retracts into the fixed base 6.

[0045] The power box 5 is equipped with a drive mechanism 9 and a feeding mechanism 10. A part of the feeding mechanism 10 is inserted into the inner cavity of the fixed seat 6 and is configured to cooperate with the limiting block 73 of the pressing assembly 7. Specifically, the feeding mechanism 10 includes a first reciprocating screw 101 and a first slider 102 threadedly connected to the first reciprocating screw 101. The top of the first slider 102 is provided with an inclined surface, and the bottom of the limiting block 73 is provided with an inclined surface that cooperates with it. When the first reciprocating screw 101 rotates, it drives the first slider 102 to rise. Its inclined surface pushes the inclined surface of the limiting block 73, overcoming the elastic force of the spring 74 and causing the sliding rod 71 to slide outward, thereby driving the arc-shaped pressing strip 72 to press against the side wall of the cover 2 on the positioning mechanism 8 to perform convex pressing. When the first slider 102 descends, the spring 74 returns to its original position and pulls the pressing assembly 7 to retract.

[0046] To achieve precise indexing and pressing of multiple discontinuous protrusions on the lid 2, the positioning mechanism 8 has an automatic rotation function: the positioning mechanism 8 includes a lifting assembly 81 and a positioning column 82 rotatably mounted on the lifting assembly 81. The top of the positioning column 82 protrudes from the table surface of the machine base 4 and is used to fit and position the lid 2. The inner diameter of the lid 2 is slightly larger than the outer diameter of the positioning column 82 to facilitate placement and provide space for pressing the lid. The inner wall of the through hole of the table surface of the machine base 4 is provided with a spiral groove 83, and the side wall of the positioning column 82 is provided with a limiting protrusion 84 that slides with the spiral groove 83.

[0047] The lifting assembly 81 includes a second reciprocating screw 811 and a second slider 812 threadedly connected to the second reciprocating screw 811. The bottom of the positioning post 82 is rotatably connected to the top of the second slider 812. When the second reciprocating screw 811 rotates, it drives the second slider 812 to rise and fall, thereby driving the positioning post 82 to rise and fall. During the rising and falling of the positioning post 82, the limiting protrusion 84, guided by the spiral groove 83, forces the positioning post 82 to rotate a certain angle within the through hole.

[0048] The drive mechanism 9 is used to synchronously drive the first reciprocating lead screw 101 and the second reciprocating lead screw 811. The drive mechanism 9 includes a drive motor 91 and a rotating shaft 92. The rotating shaft 92 is rotatably mounted at the bottom of the inner cavity of the power box 5. The first reciprocating lead screw 101 is coaxially and fixedly connected to the rotating shaft 92. Both the first reciprocating lead screw 101 and the rotating shaft 92 are fixedly connected to driven bevel gears 93. The output end of the drive motor 91 is fixedly connected to an incomplete bevel gear 94. The incomplete bevel gear 94 is located between the two driven bevel gears 93 and can mesh with the two driven bevel gears 93 in sequence. The rotating shaft 92 is also fixedly connected to an intermediate gear 95, which meshes with the driven gear 96 fixedly connected to the second reciprocating lead screw 811.

[0049] Meanwhile, in order to fix the cover 2 and the positioning post 82 relatively, a rubber circular plate with a diameter slightly larger than the inner diameter of the cover 2 is provided on the upper outer wall of the positioning post 82. This allows the cover 2 to be held in place by the restoring force of the rubber circular plate when the cover 2 is positioned, thereby keeping the cover 2 and the positioning post 82 relatively fixed.

[0050] The working process of this production unit is as follows: Loading and positioning: The lid 2 to be processed is placed upside down on the four positioning posts 82 (that is, the lid 2 has been pressed to form the top wall 21 and the side wall 22 extending downward from its periphery).

[0051] First pressing: Drive motor 91 starts, incomplete bevel gear 94 first meshes with driven bevel gear 93 on first reciprocating screw 101, driving first reciprocating screw 101 to rotate, causing first slider 102 to rise, pushing four pressing components 7 to slide outward synchronously through inclined plane, pressing the side walls of four covers 2 simultaneously with protrusions, and after pressing is completed, incomplete bevel gear 94 continues to mesh with driven bevel gear 93 on first reciprocating screw 101, and falls under the drive of first reciprocating screw 101, and at this time, since incomplete bevel gear 94 does not mesh with driven bevel gear 93 on rotating shaft 92, rotating shaft 92 and second reciprocating screw 811 do not move.

[0052] Reset and Indexing: After pressing, the incomplete bevel gear 94 disengages from the driven bevel gear 93 on the first reciprocating screw 101, and the pressing assembly 7 resets under the action of the spring 74. Then, the incomplete bevel gear 94 engages with the driven bevel gear 93 on the rotating shaft 92, driving the rotating shaft 92 to rotate. The rotating shaft 92 drives the second reciprocating screw 811 to rotate through the transmission of the transition gear 95 and the driven gear 96, driving the second slider 812 to rise. While the positioning post 82 rises, due to the cooperation between the limiting protrusion 84 and the spiral groove 83, it drives the cover 2 to rotate by a preset angle (for example, if 4 protrusions need to be pressed, it rotates 90 degrees each time).

[0053] Secondary pressing: After the positioning post 82 rises to the position, the incomplete bevel gear 94 disengages from the driven bevel gear 93 on the rotating shaft 92 again and meshes with the driven bevel gear 93 on the first reciprocating screw 101 to start the next pressing cycle. This process is repeated until all the preset protrusions on the cover 2 are pressed.

[0054] Furthermore, after all the protrusions of the cover 2 have been pressed, a bending process is performed, in which the pressed protrusions are bent and flipped onto the inner wall of the cover 2 to form a mating part 25.

[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency sealed packaging can, characterized in that: Includes the tank body (1), the lid (2), and the sealing ring (3); The tank (1) includes a tank body (11) with an upper opening and a tank connecting part (12) located at the upper opening. The outer periphery of the tank connecting part (12) is provided with a screw-fit part (13). The lid (2) is integrally formed. The lid (2) has a top wall (21) and a side wall (22) extending downward from its periphery. The inner side of the side wall (22) is provided with a bent part (24) that bends inward and forms a fitting part (25). The top wall (21), the side wall (22) and the bent part (24) together form a downward-opening receiving cavity (23) to receive the can body connecting part (12), and the fitting part (25) is screwed into the screw-fit part (13). The sealing ring (3) is located on the inner side of the top wall (21) of the lid (2). When the lid (2) and the tank (1) are screwed into place, the sealing ring (3) is pressed between the top of the top wall (21) and the top of the tank connection (12).

2. The high-efficiency sealed packaging can according to claim 1, characterized in that: The screw-fitting part (13) and the mating part (25) are mutually mating spiral convex structures. The spiral convexes are discontinuous in the circumferential direction, and the arc length of a single spiral convex is greater than the circumferential arc length corresponding to its uniform distribution.

3. The high-efficiency sealed packaging can according to claim 1, characterized in that: The screw-fitting part (13) and the mating part (25) are threaded structures that fit together.

4. The high-efficiency sealed packaging can according to claim 1, characterized in that: The inner side of the top wall (21) is provided with a downward protrusion, which together with the side wall (22) defines an annular groove (223) for limiting the sealing ring (3), and the depth of the annular groove (223) is 1 / 2 to 2 / 3 of the thickness of the sealing ring (3).

5. The high-efficiency sealed packaging can according to any one of claims 1 to 4, characterized in that: The tank connecting part (12) and the tank body (11) are integrally formed; or, the tank connecting part (12) is an independent component connected to the top of the tank body (11) by a rolling edge process.

6. A production apparatus for a high-efficiency sealed packaging can, used to process the lid (2) of claim 2, characterized in that: The machine includes a machine base (4), a power box (5) is installed at the bottom of the machine base (4), a hollow fixed seat (6) is installed on the table surface of the machine base (4), and pressing components (7) for pressing spiral protrusions are slidably installed on the four sides of the fixed seat (6). Four positioning mechanisms (8) for positioning the cover (2) are installed on the table surface of the machine base (4), and the four positioning mechanisms (8) are respectively set in correspondence with the four pressing components (7). The power box (5) is equipped with a drive mechanism (9) and a feeding mechanism (10). The feeding mechanism (10) is inserted into the cavity of the fixed seat (6) and is set in cooperation with the pressing components (7). The drive mechanism (9) drives the feeding mechanism (10) to move up and down, so that the pressing components (7) slide and press the protrusions of the cover (2) on the positioning mechanism (8). The pressing assembly (7) includes a sliding rod (71) that passes through the side wall of the fixed seat (6). One end of the sliding rod (71) that passes through the fixed seat (6) is fitted with an arc-shaped pressing strip (72) that fits against the side wall of the cover (2). The arc-shaped pressing strip (72) has a pressing groove on its arc surface. The other end of the sliding rod (71) is fitted with a limiting block (73). A spring (74) is sleeved on the outer wall of the sliding rod (71). The spring (74) is located between the limiting block (73) and the inner wall of the fixed seat (6). The feeding mechanism (10) includes a first reciprocating screw (101), one end of which is inserted into the inner cavity of the fixed seat (6) and threadedly connected to a first slider (102). The top of the slider (102) and the bottom of the limiting block (73) are provided with mutually cooperating inclined surfaces.

7. The production apparatus for high-efficiency sealed packaging cans according to claim 6, characterized in that: The positioning mechanism (8) includes a lifting assembly (81). A positioning post (82) that cooperates with the cover (2) is rotatably mounted on the lifting assembly (81). The top of the positioning post (82) extends through the table surface of the machine platform (4). A through hole that cooperates with the positioning post (82) is opened through the table surface of the machine platform (4). A spiral groove (83) is opened on the inner wall of the through hole. A limiting protrusion (84) that cooperates with the spiral groove (83) is provided on the side wall of the positioning post (82). After the cover (2) completes the pressing of a convex ridge, the lifting assembly (81) drives the positioning post (82) to rise to a certain height. At the same time, the limiting protrusion (84) and the spiral groove (83) cooperate with each other to drive the positioning post (82) and the cover (2) to rotate by an angle.

8. The production apparatus for high-efficiency sealed packaging cans according to claim 7, characterized in that: The inner diameter of the cover (2) is slightly larger than the outer diameter of the positioning post (82).

9. The production apparatus for high-efficiency sealed packaging cans according to claim 8, characterized in that: The lifting assembly (81) includes a second reciprocating screw (811), and a second slider (812) is threadedly connected to the outer wall of the second reciprocating screw (811). The positioning post (82) is rotatably connected to the top of the second slider (812). The positioning post (82) has a clearance hole that cooperates with the second reciprocating screw (811), and the inner diameter of the clearance hole is slightly larger than the diameter of the second reciprocating screw (811).

10. The production apparatus for high-efficiency sealed packaging cans according to claim 8, characterized in that: The drive mechanism (9) includes a drive motor (91) and a rotating shaft (92). The rotating shaft (92) is rotatably mounted at the bottom of the inner cavity of the power box (5). The first reciprocating screw (101) is rotatably connected to the top of the rotating shaft (92) and is coaxially arranged with the rotating shaft (92). Both the outer wall of the first reciprocating screw (101) and the outer wall of the rotating shaft (92) are fixedly connected with driven bevel gears (93). The output end of the drive motor (91) is fixedly connected with an incomplete bevel gear (94), and the incomplete bevel gear (94) is located between the two driven bevel gears (93) and meshes with the two driven bevel gears (93) in sequence. The outer wall of the rotating shaft (92) is fixedly connected with a transition gear (95), and the outer wall of the second reciprocating screw (811) is fixedly connected with a driven gear (96) that meshes with the transition gear (95).

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