A fully automatic multi-station can seaming device with vacuum pumping and nitrogen filling functions

Abstract

The present invention relates to a full-automatic multi-station can sealing device with a vacuum pumping and nitrogen filling function, which includes a machine platform. An upper feeding conveyor belt and a discharging conveyor belt are arranged side by side on the machine platform. A main bracket is arranged between the upper feeding conveyor belt and the discharging conveyor belt on the machine platform. A plurality of secondary lifting vacuum pumping and nitrogen filling can sealing mechanisms and a can body pushing mechanism are arranged on the main bracket. A can body separation and positioning mechanism, a can lid feeding and edge pressing mechanism, and an implicit blocking mechanism are sequentially arranged on the machine platform along the feeding direction of the upper feeding conveyor belt. The beneficial effects of the present invention are as follows: the structure is compact, a plurality of linkage structures are adopted to reduce the use of driving parts, and it can avoid the milk powder being drawn out during the vacuum pumping of the milk powder can, improving the processing efficiency and processing quality of can sealing.

Description

Technical Field

[0001] The present invention relates to the field of can sealing equipment, and particularly relates to a full-automatic multi-station can sealing equipment with a vacuum pumping and nitrogen filling function. Background Art

[0002] A milk powder can is a storage container for milk powder, and a can sealer is a device used to seal milk powder cans. There are mainly two types of can sealers. One is a can sealer that can seal tinplate, paper, aluminum, and plastic containers, and the other is a can sealer that can pump vacuum for sealing glass containers.

[0003] For can sealing treatment, the existing vacuum capping machine with the publication number CN109747884A includes a frame. A can conveying belt and an out-can belt are arranged on the frame. A vacuum capping mechanism is arranged between the can conveying belt and the out-can belt. The vacuum capping mechanism includes a capping device that can fix the can lid and a sealing device that can send the can body to the capping device and cooperate with the capping device. The capping device is provided with a first hole, and the sealing device is provided with a second hole. The frame is provided with a can conveying mechanism that sequentially sends the can body from the can conveying belt to the sealing device and the out-can belt. A lid conveying mechanism is installed on the capping device.

[0004] When the existing vacuum capping machine performs vacuum pumping, some milk powder will be drawn out from the pre-capped milk powder can. This is mainly because there is no limit on the upper part of the can lid of the milk powder can during vacuum pumping, and partial deformation occurs in the part of the lid body that is not pressed and tied on the can body, resulting in milk powder overflow. It can only process a single milk powder can at a time. Therefore, a full-automatic multi-station can sealing equipment with a vacuum pumping and nitrogen filling function is needed. Summary of the Invention

[0005] The object of the present invention is to provide a full-automatic multi-station can sealing equipment with a vacuum pumping and nitrogen filling function, which has a compact structure and uses multiple linkage structures to reduce the use of driving parts. When performing vacuum pumping and can sealing, a three-position cylinder is used to perform two-stage lifting on the milk powder can, first lifting and then tightening the milk powder can, reducing the degree of upward suspension of the milk powder can lid during vacuum pumping, that is, reducing the degree of expansion of the gap between the lid and the can body during vacuum pumping, thereby reducing the amount of milk powder drawn out from the milk powder can during vacuum pumping and improving the processing efficiency and processing quality of milk powder can sealing.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic multi-station can sealing equipment with vacuum pumping and nitrogen filling function, comprising a machine platform, a feeding conveyor belt and a unloading conveyor belt are arranged side by side on the machine platform, a main bracket is arranged between the feeding conveyor belt and the unloading conveyor belt on the machine platform, a plurality of secondary lifting vacuum pumping and nitrogen filling can sealing mechanisms and a can body pushing mechanism are arranged on the main bracket, a can body separation and positioning mechanism, a can cover feeding and pressing edge mechanism and an internal implicit blocking mechanism are arranged in sequence on the machine platform along the feeding direction of the feeding conveyor belt, the secondary lifting vacuum pumping and nitrogen filling can sealing mechanism and the internal implicit blocking mechanism are arranged in sequence on the machine platform The vacuum nitrogen filling and sealing mechanism includes a lower base, a lower lifting cylinder, a three-position cylinder, a lower sliding seat, a push rod, a bearing seat, a sealing tube, an exhaust pipe, an upper sealing chamber, a driving motor, a rotating disk, a switching cylinder, a swing arm, a wheel seat, a crimping wheel and a sealing wheel. The lower base is fixedly connected to the machine, the lower lifting cylinder and the three-position cylinder are both fixedly connected to the lower base, the lower sliding seat is fixedly connected to the piston rod of the lower lifting cylinder, the sealing tube and the exhaust pipe are both fixedly connected to the lower sliding seat, the push rod is coaxially arranged with the sealing tube, and the piston rod of the three-position cylinder passes through the lower sliding seat and extends into the sealing tube and is fixed to the push rod. The described push rod is a stepped rod, the described supporting seat is placed on the push rod, the described supporting seat is provided with an air guide hole, the described upper sealing chamber is fixedly connected to the main bracket, the described rotating disk, wheel seat, crimping wheel and sealing wheel are all located in the upper sealing chamber, the described wheel seat and rotating disk are rotatably connected to the upper sealing chamber, the described crimping wheel and sealing wheel are rotatably connected to the two ends of the wheel seat respectively, the described switching cylinder is composed of two single cylinders, the piston rod of one of the single cylinders of the described switching cylinder is hinged to the outer wall of the upper sealing chamber, the upper end of the described wheel seat extends to the outside of the upper sealing chamber and is hinged to one end of the swing arm, the The other end of the swing arm is hinged to the piston rod of another single cylinder of the switching cylinder, the rotating shaft of the drive motor is fixedly connected to the rotating disk, and the drive motor is fixedly connected to the outer wall of the upper sealed bin. After the piston rod of the lower lifting cylinder is fully extended, the lower slide seat, the sealing tube and the upper sealed bin form a sealed chamber, and the upper sealed bin is provided with a nitrogen filling port. The internal implicit blocking mechanism includes a bottom plate, a lifting cylinder, a lifting seat and a blocking column. The lifting seat is provided with a yield groove corresponding to the feeding conveyor belt. The tank body separation and positioning mechanism includes a separation cylinder, a connecting plate, a connecting rod, a side bracket and a separation cam.

[0007] Furthermore, an adjusting screw is rotatably connected to the machine platform, the main bracket is slidably connected to the machine platform, and the adjusting screw is threadedly connected to the screw hole of the main bracket support foot.

[0008] Furthermore, the base plate is fixedly connected to the frame of the feeding conveyor belt, the lifting cylinder is fixedly connected to the lifting seat, the piston rod of the lifting cylinder is fixedly connected to the base plate, and the blocking column is fixedly connected to the upper end of the lifting seat.

[0009] Further, the side brackets are fixedly connected to the machine table. There are specifically multiple separating cams, which are rotatably connected to the side brackets. One end of the connecting rod is hinged to the separating cam, the other end of the connecting rod is hinged to the connecting plate, the separating cylinder is hinged to the side bracket, and the piston rod of the separating cylinder is hinged to the connecting plate.

[0010] Further, the can lid feeding and edge pressing mechanism includes an automatic feeding bin and a hemming assembly, and the hemming assembly is located below the automatic feeding bin.

[0011] Further, guide seats are fixedly connected to both sides of the feeding conveyor belt and both sides of the discharging conveyor belt. Guide rails are slidably connected to the guide seats, and the guide rails are fixedly connected to the guide seats through locking screws.

[0012] The beneficial effects of the present invention are as follows: The structure is compact. Multiple linkage structures are adopted to reduce the use of driving parts. When performing vacuum pumping and can sealing, a three-position cylinder is used to perform two-stage lifting on the milk powder can, first lifting and then tightening the milk powder can, reducing the degree of upward suspension of the milk powder can lid during vacuum pumping, that is, reducing the degree of expansion of the gap between the can lid and the can body during vacuum pumping, thereby reducing the extraction amount of the milk powder can during vacuum pumping and improving the processing efficiency and processing quality of can sealing for the milk powder can. Description of the Drawings

[0013] Figure 1 It is an isometric schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 3 It is a schematic diagram of the structure at the main bracket of the present invention.

[0016] Figure 4 It is a cross-sectional view of the sealing pipe of the present invention.

[0017] Figure 5 It is a schematic diagram of the internal hidden blocking mechanism and the can body separating and positioning mechanism of the present invention.

[0018] Figure 6 It is a schematic diagram of the vacuum pumping state.

[0019] In the figure: 1, machine platform; 2, loading conveyor belt; 3, unloading conveyor belt; 4, secondary lifting, vacuum pumping and nitrogen filling and can sealing mechanism; 401, lower base; 402, lower lifting cylinder; 403, three-position cylinder; 404, lower sliding seat; 405, ejector rod; 406, bearing seat; 407, sealing pipe; 408, air extraction pipe; 409, upper sealing bin; 410, drive motor; 411, rotating disk; 412, switching cylinder; 413, swing arm; 414, wheel seat; 415, curling wheel; 416, sealing wheel; 417, nitrogen filling port; 5, implicit blocking mechanism; 501, bottom plate; 502, lifting cylinder; 503, lifting seat; 504, blocking column; 6, tank body partitioning and positioning mechanism; 601, partitioning cylinder; 602, connecting plate; 603, connecting rod; 604, side bracket; 605, partitioning cam; 7, can lid loading and edge pressing mechanism; 8, main bracket; 801, adjusting screw rod; 9, tank body pushing mechanism. Detailed implementation manners

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Refer to Figures 1-6A fully automatic multi-station can seaming device with a vacuum pumping and nitrogen filling function is shown, including a machine table 1. On the machine table 1, a loading conveyor belt 2 and an unloading conveyor belt 3 are arranged side by side. A main support 8 is arranged between the loading conveyor belt 2 and the unloading conveyor belt 3 on the machine table 1. A plurality of secondary lifting vacuum pumping and nitrogen filling can seaming mechanisms 4 and a can body pushing mechanism 9 are arranged on the main support 8. The can body pushing mechanism 9 is used to convey the milk powder cans from the loading conveyor belt 2 to the can seaming station, and to push the processed finished products from the can seaming station to the unloading conveyor belt 3 for unloading. On the machine table 1, along the feeding direction of the loading conveyor belt 2, a can body separation and positioning mechanism 6, a can lid loading and edge pressing mechanism 7 and an implicit blocking mechanism 5 are arranged in sequence. The can body separation and positioning mechanism 6 is used to position and separate the milk powder can bodies on the loading conveyor belt 2. The can lid loading and edge pressing mechanism 7 is used to load the can lids onto the milk powder can bodies and pre-press and fold the edges of the can lids on the milk powder can bodies. The secondary lifting vacuum pumping and nitrogen filling can seaming mechanism 4 includes a lower base 401, a lower lifting cylinder 402, a three-position cylinder 403, a lower sliding seat 404, a push rod 405, a bearing seat 406, a sealing pipe 407, an air extraction pipe 408, an upper sealing chamber 409, a driving motor 410, a rotating disk 411, a switching cylinder 412, a swing arm 413, a wheel seat 414, a curling wheel 415 and a sealing wheel 416. The lower base 401 is fixedly connected to the machine table 1. The lower lifting cylinder 402 and the three-position cylinder 403 are both fixedly connected to the lower base 401. The lower sliding seat 404 is fixedly connected to the piston rod of the lower lifting cylinder 402. The sealing pipe 407 and the air extraction pipe 408 are both fixedly connected to the lower sliding seat 404. The push rod 405 is coaxially arranged with the sealing pipe 407. The piston rod of the three-position cylinder 403 passes through the lower sliding seat 404 and extends into the sealing pipe 407 to be fixedly connected to the push rod 405. The push rod 405 is a stepped rod. The bearing seat 406 is placed on the push rod 405. The bearing seat 406 can be directly taken off from the push rod 405, which is convenient for cleaning and maintaining the sealing pipe 407. And a bearing is arranged at the contact position between the bearing seat 406 and the push rod 405. Air guide holes are arranged on the bearing seat 406. The upper sealing chamber 409 is fixedly connected to the main support 8. The rotating disk 411, the wheel seat 414, the curling wheel 415 and the sealing wheel 416 are all located in the upper sealing chamber 409. The wheel seat 414 and the rotating disk 411 are both rotatably connected to the upper sealing chamber 409. The curling wheel 415 and the sealing wheel 416 are respectively rotatably connected to both ends of the wheel seat 414. The switching cylinder 412 is composed of two single-cylinder cylinders. One of the piston rods of the switching cylinder 412 is hinged to the outer wall of the upper sealing chamber 409. The upper end of the wheel seat 414 extends out of the upper sealing chamber 409 and is hinged to one end of the swing arm 413. The other end of the swing arm 413 is hinged to the piston rod of the other single-cylinder cylinder of the switching cylinder 412. The rotating shaft of the driving motor 410 is fixedly connected to the rotating disk 411. The driving motor 410 is fixedly connected to the outer wall of the upper sealing chamber 409. After the piston rod of the lower lifting cylinder 402 fully extends, the lower sliding seat 404, the sealing pipe 407 and the upper sealing chamber 409 form a sealed cavity.The upper sealed chamber 409 is provided with a nitrogen filling port 417, which is used to allow nitrogen to enter the milk powder can after vacuuming. The internal implicit blocking mechanism 5 includes a base plate 501, a lifting cylinder 502, a lifting seat 503, and a blocking column 504. The lifting seat 503 is provided with a clearance groove corresponding to the feeding conveyor belt 2. The tank body separation and positioning mechanism 6 includes a separation cylinder 601, a connecting plate 602, a connecting rod 603, a side bracket 604, and a separation cam 605.

[0022] An adjusting screw rod 801 is rotatably connected to the machine platform 1, and the main bracket 8 is slidably connected to the machine platform 1. The machine platform 1 can guide the sliding of the main bracket 8. The adjusting screw rod 801 is used to adjust the height of the main bracket 8, which can adapt to the processing of milk powder cans of different heights. The adjusting screw rod 801 is threadedly connected to the screw hole of the supporting foot of the main bracket 8.

[0023] The bottom plate 501 is fixedly connected to the frame of the feeding conveyor belt 2, the lifting cylinder 502 is fixedly connected to the lifting seat 503, the piston rod of the lifting cylinder 502 is fixedly connected to the bottom plate 501, and the blocking column 504 is fixedly connected to the upper end of the lifting seat 503. The blocking column 504 is mainly used to position and block the transportation of milk powder cans.

[0024] The side bracket 604 is fixedly connected to the machine 1, and there are multiple separation cams 605. The separation cams 605 are rotatably connected to the side bracket 604. One end of the connecting rod 603 is hinged to the separation cam 605, and the other end of the connecting rod 603 is hinged to the connecting plate 602. The connecting rod 603 can drive the separation cam 605 to rotate under the sliding of the connecting plate 602 to position and separate the milk powder cans on the feeding conveyor belt 2. The separation cylinder 601 is hinged to the side bracket 604, and the piston rod of the separation cylinder 601 is hinged to the connecting plate 602.

[0025] The can lid feeding and edge pressing mechanism 7 includes an automatic feeding bin and an edge pressing assembly. The automatic feeding bin is used to feed one can lid onto the can body at a time. The edge pressing assembly is located at the lower part of the automatic feeding bin and is used to pre-install the can lid onto the can body.

[0026] Both sides of the loading conveyor belt 2 and the unloading conveyor belt 3 are fixedly connected with guide seats, and guide rails are slidably connected to the guide seats. The guide rails can guide the feeding of the milk powder cans to prevent deviation. The guide rails are fixedly connected to the guide seats by locking screws.

[0027] The working principle of the present invention is as follows: The milk powder cans filled with milk powder are conveyed through the feeding conveyor belt 2. The milk powder cans are first positioned and separated at the tank body separation and positioning mechanism 6. The separation cam 605 is rotated by the telescopic movement of the piston rod of the separation cylinder 601 to separate the milk powder cans. At the same time, the tank cover feeding and hemming mechanism 7 feeds the tank covers onto the tank bodies of the milk powder cans and pre-assembles them by hemming; then the milk powder cans continue to be conveyed, and are blocked by the implicit blocking mechanism 5 so that multiple milk powder cans stay at each feeding station in sequence. Then, the tank body pushing mechanism 9 clamps the milk powder cans to the vacuum pumping and can sealing station. The piston rod of the lower lifting cylinder 402 fully extends, and the sealing tube 407 rises to form a sealing cavity with the upper sealing chamber 409. The three-position cylinder 403 has two strokes. When performing vacuum pumping, the milk powder cans can be first lifted. The bearing seat 406 first has a large lifting stroke. At this time, the milk powder cans, the tank covers and the rotating disk 411 are brought close together (at this time, there is a certain gap between the rotating disk 411 and the tank covers. The tank covers are pre-assembled on the tank bodies, and there is also a gap between the tank covers and the tank bodies for vacuum pumping. However, the rotating disk 411 can reduce the degree of upward suspension of the tank covers of the milk powder cans during vacuum pumping, that is, reduce the degree of expansion of the gap between the tank covers and the tank bodies during vacuum pumping, thereby reducing the extraction amount of the milk powder cans during vacuum pumping). Then, the sealing cavity is evacuated through the suction pipe 408 by an external air extraction device. After the vacuum pumping is completed, nitrogen is filled into the sealing cavity from the nitrogen filling port 417. After the nitrogen filling is completed, before can sealing, the piston rod of the three-position cylinder 403 fully extends. At this time, the milk powder cans are tightened. The bearing seat 406 has a small lifting at this time. At this time, the milk powder cans, the tank covers and the rotating disk 411 are pressed together. The drive motor 410 drives the rotating disk 411 to rotate. The switching cylinder 412 drives the swing arm 413 to swing so that the curling wheel 415 abuts against the tank covers, and curling is first performed. After the curling is completed, then the switching cylinder 412 drives the swing arm 413 to make the sealing wheel 416 abut against the edge of the tank covers. During the whole process, the drive motor 410 always drives the rotating disk 411 to rotate, and the sealing wheel 416 seals during the rotation of the milk powder cans. After the whole can sealing process is completed, after each driving part is reset, the finished products are pushed by the tank body pushing mechanism 9 to the discharging conveyor belt 3 for discharging.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected to", "fixed" and other terms shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be understood to be within the protection scope of the present invention.

Claims

1. A fully automatic multi-station can seaming device with a function of vacuum pumping and nitrogen filling, characterized in that: It includes a machine platform (1), on which a loading conveyor belt (2) and an unloading conveyor belt (3) are arranged side by side. A main support (8) is arranged between the loading conveyor belt (2) and the unloading conveyor belt (3) on the machine platform (1). A plurality of secondary lifting, vacuumizing, nitrogen-filling and can-sealing mechanisms (4) and a can body pushing mechanism (9) are arranged on the main support (8). Along the feeding direction of the loading conveyor belt (2) on the upper edge of the machine platform (1), a can body separation and positioning mechanism (6), a can lid loading and crimping mechanism (7) and an implicit blocking mechanism (5) are sequentially arranged on the machine platform (1). The secondary lifting, vacuumizing, nitrogen-filling and can-sealing mechanism (4) includes a lower base (401), a lower lifting cylinder (402), a three-position cylinder (403), a lower sliding seat (404), a push rod (405), a bearing seat (406), a sealing pipe (407), an air extraction pipe (408), an upper sealing chamber (409), a driving motor (410), a rotating disk (411), a switching cylinder (412), a swing arm (413), a wheel seat (414), a curling wheel (415) and a sealing wheel (416). The piston rod of the three-position cylinder (403) passes through the lower sliding seat (404) and extends into the sealing pipe (407) to be fixedly connected with the push rod (405). The push rod (405) is a stepped rod. The bearing seat (406) is placed on the push rod (405). The bearing seat (406) is provided with air guide holes. The upper sealing chamber (409) is fixedly connected with the main support (8). The rotating disk (411), the wheel seat (414), the curling wheel (415) and the sealing wheel (416) are all located in the upper sealing chamber (409). The wheel seat (414) and the rotating disk (411) are both rotatably connected with the upper sealing chamber (409). The curling wheel (415) and the sealing wheel (416) are respectively rotatably connected with two ends of the wheel seat (414). The switching cylinder (412) is composed of two single-cylinder cylinders. The piston rod of one single-cylinder cylinder of the switching cylinder (412) is hinged with the outer wall of the upper sealing chamber (409). The upper end of the wheel seat (414) extends outside the upper sealing chamber (409) and is hinged with one end of the swing arm (413). The other end of the swing arm (413) is hinged with the piston rod of the other single-cylinder cylinder of the switching cylinder (412). The rotating shaft of the driving motor (410) is fixedly connected with the rotating disk (411). The driving motor (410) is fixedly connected with the outer wall of the upper sealing chamber (409). After the piston rod of the lower lifting cylinder (402) fully extends, the lower sliding seat (404), the sealing pipe (407) and the upper sealing chamber (409) form a sealed cavity. The upper sealing chamber (409) is provided with a nitrogen-filling port (417). When the piston rod of the three-position cylinder (403) extends to the middle position, the bearing seat (406) lifts the milk powder can and moves it close to the rotating disk (411). At this time, there is a certain gap between the rotating disk (411) and the can lid. The implicit blocking mechanism (5) includes a bottom plate (501), a lifting cylinder (502), a lifting seat (503) and a blocking column (504).The lifting seat (503) is provided with a clearance groove corresponding to the feeding conveyor belt (2), the bottom plate (501) is fixedly connected to the frame of the feeding conveyor belt (2), the lifting cylinder (502) is fixedly connected to the lifting seat (503), the piston rod of the lifting cylinder (502) is fixedly connected to the bottom plate (501), the blocking column (504) is fixedly connected to the upper end of the lifting seat (503), and the tank body separation and positioning mechanism (6) includes a separation cylinder (601), a connecting plate (602), a connecting rod (603), and a side bracket. (604) and a separation cam (605), the side bracket (604) is fixedly connected to the machine (1), the separation cam (605) is specifically multiple, the separation cam (605) is rotatably connected to the side bracket (604), one end of the connecting rod (603) is hinged to the separation cam (605), the other end of the connecting rod (603) is hinged to the connecting plate (602), the separation cylinder (601) is hinged to the side bracket (604), and the piston rod of the separation cylinder (601) is hinged to the connecting plate (602).

2. The fully automatic multi-station can seaming equipment with a vacuum pumping and nitrogen filling function according to claim 1, characterized in that: A regulating lead screw (801) is rotatably connected to the machine table (1), the main bracket (8) is slidably connected to the machine table (1), and the regulating lead screw (801) is threadedly connected to the screw hole of the support leg of the main bracket (8).

3. The fully automatic multi-station can seaming equipment with a vacuum pumping and nitrogen filling function according to claim 1, characterized in that: The lower base (401) is fixedly connected to the machine table (1), the lower lifting cylinder (402) and the three-position cylinder (403) are both fixedly connected to the lower base (401), the lower sliding seat (404) is fixedly connected to the piston rod of the lower lifting cylinder (402), the sealing pipe (407) and the air extraction pipe (408) are both fixedly connected to the lower sliding seat (404), and the ejector rod (405) is coaxially arranged with the sealing pipe (407).

4. The full-automatic multi-station can seaming equipment with a vacuum pumping and nitrogen filling function according to claim 1, characterized in that: The can lid feeding and hemming mechanism (7) includes an automatic feeding bin and a hemming assembly, and the hemming assembly is located below the automatic feeding bin.

5. The fully automatic multi-station can seaming equipment with a vacuum pumping and nitrogen filling function according to claim 1, wherein: Guide seats are fixedly connected to both sides of the feeding conveyor belt (2) and both sides of the discharging conveyor belt (3). Guide rails are slidably connected to the guide seats, and the guide rails are fixedly connected to the guide seats through locking screws.

Images