Tinplate can top pull ring three-jaw cover sealing mechanism

Abstract

The utility model relates to the field of tinplate can pull ring sealing, and discloses a tinplate can top pull ring three-jaw sealing mechanism which comprises a rotating shaft driven by external rotation, a plurality of supporting rods are welded to the edge of the bottom end of the rotating shaft, a fixing ring plate is welded to the bottom ends of the supporting rods, and a sealing clamping pad is rotationally installed in the middle of the top end of the fixing ring plate. A plurality of movable parts are rotatably mounted on the outer surface of the rotating shaft, movable frames are hinged to the bottoms of the movable parts and located in the rotating shaft, and reset springs are mounted on the outer surface of the rotating shaft and extend into the movable parts; the cover sealing blades at different positions extrude the outer surface of the can cover and rotate, so that the effect of conveniently carrying out rotary cover sealing on different positions of the outer surface of the can cover is achieved, the mounting firmness of the can cover at a cover opening is improved, the problem that liquid in a tinplate can leaks due to the fact that the can cover is not firmly sealed is solved, and the service life of the tinplate can is prolonged. And the overall sealing effect of the tin can by the can cover is improved.

Description

Technical Field

[0001] The present application relates to the field of pull-ring caps for tinplate cans, and in particular to a three-claw capping mechanism for the pull-ring at the top of a tinplate can. Background Art

[0002] A tinplate can generally refers to a can or container made of tinplate. There is a metal ring at the mouth of the can lid at the top of the tinplate can, which is usually used to open or seal the can or other types of tinplate cans. After the tinplate can is filled, its mouth needs to be capped. Generally, the can lid is placed at the mouth of the tinplate can at the top, and a capping device is used to rotate and indent along the outer surface of the can lid so that the can lid is clamped on the outer surface of the mouth of the tinplate can.

[0003] However, due to the presence of certain thread patterns at the mouth of some tinplate can lids, the existing capping devices only rotate along a certain position on the outer surface of the can lid, capping the can lid at a specific position by rotation, resulting in limited firmness of the connection between the can lid and the mouth. When the can lid is pressed or placed for a certain period of time, the can lid of the tinplate can may become loose, thereby having a certain impact on the overall sealing effect of the tinplate can.

[0004] In view of the above-related technologies, the inventor believes that there is a defect in the low firmness of capping by rotating at a single position when capping a tinplate can. Therefore, a three-claw capping mechanism for the pull-ring at the top of a tinplate can is proposed to solve the above problems. Utility Model Content

[0005] In order to solve the problem of low firmness of capping by rotating at a single position when capping a tinplate can, the present application provides a three-claw capping mechanism for the pull-ring at the top of a tinplate can.

[0006] The three-claw capping mechanism for the pull-ring at the top of a tinplate can provided by the present application adopts the following technical solutions:

[0007] A three-claw capping mechanism for the pull-ring at the top of a tinplate can includes a rotating shaft driven by external rotation. A plurality of support rods are welded to the edge of the bottom end of the rotating shaft. A fixed ring plate is welded to the bottom end of the support rods. A sealing gasket is rotatably installed in the middle of the top end of the fixed ring plate. A plurality of movable parts are rotatably installed on the outer surface of the rotating shaft. An activity frame is hinged to the inside of the rotating shaft at the bottom of the movable part. A return spring is installed on the outer surface of the rotating shaft and extends into the movable part. A fixed groove is formed at the bottom of one end of the activity frame. An activity long rod is movably installed in the fixed groove of a single activity frame, and activity short rods are movably installed in the fixed grooves of the remaining multiple activity frames. The bottom ends of the activity long rod and the activity short rods extend below the activity frame and are fixedly connected with capping blades. A sliding mechanism is further provided on the outer surface of the rotating shaft for simultaneously controlling the activities of multiple capping blades to squeeze the can lid.

[0008] Preferably, the sliding mechanism includes a movable sleeve which is movably sleeved on the outer surface of the rotating shaft near the top of the movable member. A support spring is installed in the middle of the top end of the rotating shaft. Above the support spring, a cylinder output rod is movably installed. At the bottom end of the cylinder output rod, connecting rods are symmetrically welded. The bottom ends of the connecting rods are placed on the outer surface of the rotating shaft and a limit pressing plate is welded.

[0009] Preferably, buffer springs are sleeved on the outer surfaces of the top parts of the movable long rod and the movable short rod inside the fixed groove. The buffer springs are located inside the fixed groove, and the fixed groove and the buffer springs are mutually fitted.

[0010] Preferably, the number of the movable members and the movable frames is three each. The two movable short rods are symmetrically arranged on the outer surface of the rotating shaft along the movable long rod. The sealing blade at the bottom end of the movable short rod is higher than the sealing blade at the bottom end of the movable long rod.

[0011] Preferably, the outer diameter of the bottom of the movable sleeve is smaller than the outer diameter of the top. The bottom of the movable sleeve is located between the rotating shaft and the movable member.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] By clamping the can lid along the bottom of the fixed ring plate inside the sealing gasket, the cylinder output rod slides down to drive the limit pressing plate to move downward along the outer surface of the rotating shaft. Then, the movable sleeve pushes multiple movable members to rotate, and the movable frame drives multiple sealing blades to be clamped at different positions on the outer surface of the can lid. Rotate the rotating shaft to rotate and seal the can lid at the mouth of the tinplate can; compared with the prior art, this solution has the effect of facilitating the rotary sealing of different positions on the outer surface of the can lid, improving the firmness of the installation of the can lid at the mouth, solving the problem of liquid leakage in the tinplate can caused by the insecure sealing of the can lid, and enhancing the overall sealing effect of the can lid on the tinplate can. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the application embodiment;

[0015] Figure 2 is the structural schematic diagram of the movable frame in the application embodiment;

[0016] Figure 3 is the cross-sectional structural schematic diagram of the driving rotating shaft in the application embodiment;

[0017] Explanation of the reference numerals: 1, rotating shaft; 2, support rod; 3, fixed ring plate; 4, sealing gasket; 5, movable member; 6, movable frame; 7, return spring; 8, fixed groove; 9, movable long rod; 10, movable short rod; 11, sealing blade; 12, buffer spring; 13, movable sleeve; 14, support spring; 15, cylinder output rod; 16, connecting rod; 17, limit pressing plate. Detailed implementation mode

[0018] The following will further elaborate on this application in conjunction with the attached Figures 1-3 drawings.

[0019] An embodiment of this application discloses a three-claw capping mechanism for the pull ring at the top of a tinplate can. Referring to Figures 1-3 , a three-claw capping mechanism for the pull ring at the top of a tinplate can includes a rotating shaft 1 driven by external rotation, several support rods 2 are welded to the bottom edge of the rotating shaft 1, a fixed ring plate 3 is welded to the bottom of the support rods 2, a sealing gasket 4 is rotatably installed in the middle of the top of the fixed ring plate 3, several movable parts 5 are rotatably installed on the outer surface of the rotating shaft 1, a movable frame 6 is hinged to the bottom of the movable part 5 inside the rotating shaft 1, a return spring 7 is installed on the outer surface of the rotating shaft 1 extending into the movable part 5, a fixed groove 8 is opened at the bottom of one end of the movable frame 6, a movable long rod 9 is movably installed in the fixed groove 8 inside a single movable frame 6, and the remaining multiple movable frames 6 have a movable short rod 10 movably installed in the fixed groove 8 inside. The bottom ends of the movable long rod 9 and the movable short rod 10 extend below the movable frame 6 and are fixedly connected with capping blades 11. Buffer springs 12 are sleeved on the outer surfaces of the movable long rod 9 and the movable short rod 10 at the top inside the fixed groove 8. The buffer springs 12 are located inside the fixed groove 8, and the fixed groove 8 and the buffer springs 12 are mutually engaged. The number of movable parts 5 and movable frames 6 is three. The two movable short rods 10 are symmetrically arranged along the movable long rod 9 on the outer surface of the rotating shaft 1. The capping blade 11 at the bottom end of the movable short rod 10 is higher than the capping blade 11 at the bottom end of the movable long rod 9. A sliding mechanism is further provided on the outer surface of the rotating shaft 1 for simultaneously controlling the multiple capping blades 11 to move and squeeze the can lid.

[0020] By clamping the can lid along the bottom of the fixed ring plate 3 inside the sealing gasket 4, the movable parts 5 and the movable frames 6 rotate synchronously, thereby driving the multiple capping blades 11 to be clamped at different positions on the outer surface of the can lid. The rotating shaft 1 is driven to rotate by an external device, and the rotating rotating shaft 1 drives the multiple capping blades 11 to rotate along the outer surface of the can lid. Thus, the rotating capping blades 11 form indentations on the outer surface of the can lid, keeping the can lid fixed at the mouth of the tinplate can, reflecting the capping effect of the capping blades 11 on different positions of the can lid.

[0021] Referring to Figure 2 and Figure 3 , the sliding mechanism includes a movable sleeve 13, the movable sleeve 13 is movably sleeved on the outer surface of the rotating shaft 1 near the top of the movable part 5, a support spring 14 is installed in the middle of the top of the rotating shaft 1, a cylinder output rod 15 is movably installed above the support spring 14, connecting rods 16 are symmetrically welded to the bottom end of the cylinder output rod 15, the bottom ends of the connecting rods 16 are placed on the outer surface of the rotating shaft 1 and welded with a limit pressing plate 17. The outer diameter of the bottom of the movable sleeve 13 is smaller than that of the top, and the bottom of the movable sleeve 13 is located between the rotating shaft 1 and the movable part 5.

[0022] By moving the cylinder output rod 15 of the external cylinder downward, the downward movement of the cylinder output rod 15 drives the limit pressing plate 17 to move downward along the outer surface of the rotating shaft 1. Further, the limit pressing plate 17 abuts against the upper surface of the movable sleeve 13 and pushes the movable sleeve 13 to move downward along the outer surface of the rotating shaft 1. Further, the movable sleeve 13 pushes a plurality of movable members 5 to rotate, reflecting the rotation adjustment effect of the movable sleeve 13 on the plurality of movable members 5.

[0023] The implementation principle of a three-claw capping mechanism for the pull tab at the top of a tinplate can in an embodiment of the present application is as follows: By clamping the can lid at the bottom of the fixed ring plate 3 inside the sealing gasket 4, the cylinder output rod 15 of the external cylinder is driven to move downward. The downward movement of the cylinder output rod 15 drives the limit pressing plate 17 to move downward along the outer surface of the rotating shaft 1. Further, the limit pressing plate 17 abuts against the upper surface of the movable sleeve 13 and pushes the movable sleeve 13 to move downward along the outer surface of the rotating shaft 1. Further, the movable sleeve 13 pushes a plurality of movable members 5 to rotate, causing the movable members 5 and the movable frame 6 to rotate synchronously. Further, a plurality of capping blades 11 are driven to be clamped at different positions on the outer surface of the can lid. The rotating shaft 1 is driven to rotate by an external device, and the rotating shaft 1 in rotation drives the plurality of capping blades 11 to rotate along the outer surface of the can lid. Further, the rotating capping blades 11 form indentations on the outer surface of the can lid, keeping the can lid in a fixed state at the lid opening of the tinplate can. The power input ends of the rotating shaft 1 and the cylinder output rod 15 are electrically connected to the output end of an external power supply; compared with the prior art, this solution has the effect of facilitating rotary capping of different positions on the outer surface of the can lid, improving the firmness of the installation of the can lid at the lid opening, solving the problem of liquid leakage in the tinplate can caused by insecure capping of the can lid, and enhancing the overall sealing effect of the can lid on the tinplate can.

[0024] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the described object changes, the relative position relationship may change;

[0025] Second: In the drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments of the present disclosure are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0026] Finally, the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0027] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, any equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A three-claw capping mechanism for a tinplate can top pull ring, comprising a rotating shaft (1) driven by an external rotation, characterized in that: A plurality of support rods (2) are welded to the bottom edge of the rotating shaft (1), a fixed ring plate (3) is welded to the bottom end of the support rod (2), a sealing gasket (4) is rotatably mounted on the middle of the top end of the fixed ring plate (3), a plurality of movable parts (5) are rotatably mounted on the outer surface of the rotating shaft (1), a movable frame (6) is hingedly connected to the bottom of the movable part (5) inside the rotating shaft (1), a return spring (7) is installed on the outer surface of the rotating shaft (1) extending to the inside of the movable part (5), and the movable frame (6) A fixing groove (8) is provided at the bottom of one end, a single movable frame (6) is located inside the fixing groove (8) and is movably mounted with a movable long rod (9), and the remaining plurality of movable frames (6) are located inside the fixing groove (8) and are movably mounted with movable short rods (10), the bottom ends of the movable long rod (9) and the movable short rod (10) extend to the bottom of the movable frame (6) and are fixedly connected with a capping blade (11), and a sliding mechanism is also provided on the outer surface of the rotating shaft (1) for simultaneously controlling the plurality of capping blades (11) to movably squeeze the can lid.

2. A three-claw capping mechanism for a tinplate can top pull ring according to claim 1, characterized in that: The sliding mechanism comprises a movable sleeve (13), the movable sleeve (13) being movably sleeved on the outer surface of the rotating shaft (1) near the top of the movable part (5), a support spring (14) being installed in the middle of the top of the rotating shaft (1), a cylinder output rod (15) being movably installed above the support spring (14), a connecting rod (16) being symmetrically welded to the bottom end of the cylinder output rod (15), and a limiting pressure plate (17) being welded to the bottom end of the connecting rod (16) being placed on the outer surface of the rotating shaft (1) and welded thereto.

3. The three-claw capping mechanism for the top pull ring of a tinplate can according to claim 1, characterized in that: A buffer spring (12) is sleeved on the top of the outer surface of the movable long rod (9) and the movable short rod (10) and is located inside the fixed groove (8). The buffer spring (12) is located inside the fixed groove (8), and the fixed groove (8) and the buffer spring (12) are interlocked.

4. The three-claw capping mechanism for the top pull ring of a tinplate can according to claim 1, characterized in that: The movable parts (5) and the movable frames (6) are each three in number, and the two movable short rods (10) are symmetrically arranged on the outer surface of the rotating shaft (1) along the movable long rod (9), and the capping blades (11) at the bottom ends of the movable short rods (10) are higher than the capping blades (11) at the bottom ends of the movable long rods (9).

5. The three-claw capping mechanism for the top pull ring of a tinplate can according to claim 2, characterized in that: The outer diameter of the bottom of the movable sleeve (13) is smaller than the outer diameter of the top, and the bottom of the movable sleeve (13) is located between the rotating shaft (1) and the movable member (5).

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