阅读说明：本技术 一种金属盖容器电磁脉冲密封装置及其方法 (Electromagnetic pulse sealing device and method for metal-covered container ) 是由 李成祥 廖志刚 周言 王现民 杜建 石鑫 沈婷 于 2020-06-28 设计创作，主要内容包括：本发明提出了一种金属盖容器电磁脉冲密封装置及其方法,包括螺旋线圈,所述螺旋线圈电连接脉冲电流产生装置形成闭合回路,所述螺旋线圈内套有磁场集中器,所述磁场集中器上竖向开设有密封加工孔,所述密封加工孔用于容纳金属盖和容器,所述密封加工孔正上方固设有压紧机构,所述密封加工孔正下方固定有用于放置容器的高度可调底座。能够进行非接触式密封包装,减少对金属表面的损伤。(The invention provides an electromagnetic pulse sealing device and method for a metal cover container, and the electromagnetic pulse sealing device comprises a spiral coil, wherein the spiral coil is electrically connected with a pulse current generating device to form a closed loop, a magnetic field concentrator is sleeved in the spiral coil, a sealing processing hole is vertically formed in the magnetic field concentrator and used for accommodating a metal cover and the container, a pressing mechanism is fixedly arranged right above the sealing processing hole, and a height-adjustable base used for placing the container is fixedly arranged right below the sealing processing hole. Can carry out non-contact seal packing, reduce the damage to the metal surface.)

1. The utility model provides a metal lid container electromagnetic pulse sealing device which characterized in that: including spiral coil (1), spiral coil (1) electricity is connected pulse current and is produced device (5) and form closed circuit, spiral coil (1) endotheca has magnetic field concentrator (2), vertically sealed processing hole (2a) have been seted up on magnetic field concentrator (2), sealed processing hole (2a) are used for holding metal covering (3) and container (4), hold-down mechanism (6) have set firmly directly over sealed processing hole (2a), be fixed with height-adjustable base (7) that are used for placing container (4) directly under sealed processing hole (2 a).

2. The electromagnetic pulse sealing device for the metal-covered container according to claim 1, wherein: the spiral coil (1) is formed by cutting rigid cylindrical metal along a spiral rotating path to form a conducting wire, two ends (9) of the spiral coil (1) are respectively and electrically connected with the pulse current generating device (5) to form a closed loop, and the magnetic field concentrator (2) is completely positioned in the surrounding center of the spiral coil (1) and mutually fixed to form an integrated structure.

3. The electromagnetic pulse sealing device for the metal-covered container according to claim 2, wherein: and turn-to-turn insulation (12) is further arranged on the spiral coil (1), and the turn-to-turn insulation (12) extends towards the outer side of the spiral coil (1) and wraps the spiral coil (1) inside.

4. An electromagnetic pulse sealing device for a metal-capped container as defined in claim 3, wherein: the turn-to-turn insulation (12) is formed by solidifying insulating glue, and the thickness of the insulation wrapping the outer side of the spiral coil (1) exceeds 1 mm.

5. The electromagnetic pulse sealing device for the metal-covered container according to claim 4, wherein: when the thickness s of the cover skirt of the metal cover (3) is smaller than 0.05mm, the number of turns n of the wire (11) is 1, and when s is larger than or equal to 0.05mm, the number of turns n of the wire (11) is increased by 1 turn every time s is increased by 0.02 mm.

6. The electromagnetic pulse sealing device for the metal-covered container according to claim 1, wherein: the height-adjustable base (7) comprises a fixed base (15), a height adjusting rod (14) is installed on the fixed base (15), a container mounting seat (13) is connected to the height adjusting rod (14), and a fixing clamp is arranged on the container mounting seat (13).

7. The electromagnetic pulse sealing device for the metal-covered container according to claim 1, wherein: the pressing mechanism (6) is a piston, and the lower end face of an extension rod of the piston is larger than the upper surface of the metal cover (3).

8. The electromagnetic pulse sealing device for the metal-covered container according to claim 1, wherein: the side of going up of magnetic field concentrator (2), downside all inwards cave in and form the circular conical surface, magnetic field concentrator (2) one side is along having seted up micro gap (8), micro gap (8) width less than or equal to 3mm, the upper surface, lower surface and the lateral wall of magnetic field concentrator (2) all cover and have insulating film (10).

9. An electromagnetic pulse sealing method for a metal cover container is characterized by comprising the following steps: an electromagnetic pulse sealing device for a metal-capped container comprising the metal-capped container as claimed in any one of claims 1 to 8, further comprising the steps of:

s1: adjusting the caliber of the fixing clamp to the proper size of the container (4) to be sealed, and placing the container (4) to be sealed on the fixing clamp;

s2: tightening the caliber of the fixing clamp, fixing the container (4) to be sealed, and then placing the metal cover (3) on the container (4);

s3: the extension height adjusting rod (14) moves the positions of the container (4) and the metal cover (3) upwards until the metal cover (3) is completely positioned in the sealing processing hole (2a) of the magnetic field concentrator (2);

s4: the adjusting and pressing mechanism (6) presses the metal cover (3) on the container (4);

s5: operating a pulse current generating device (5), introducing pulse current into the spiral coil (1), and performing electromagnetic pulse sealing processing on the metal cover (3) and the container (4);

s6: after the processing is finished, the pressing mechanism (6) is loosened, the height adjusting rod (14) is shortened, the fixing clamp is loosened, and the sealed container (4) is taken out.

10. The electromagnetic pulse sealing method for the metal-covered container according to claim 9, wherein:

in the step S4, the pressing mechanism (6) is a piston, when the pressing mechanism (6) is adjusted, fluid is injected into the piston cylinder, so that the piston rod of the piston is pushed out, and the metal cover (3) is pressed on the container (4) by pressing force generated by the piston.

Technical Field

The invention relates to the technical field of packaging and sealing, in particular to an electromagnetic pulse sealing device and method for a metal-covered container.

Background

The container with the metal cover is a common packaging type in production and life, is mainly used for packaging medicines or food with high requirements on sealing performance and sterility, and can effectively prevent the medicines or the food from being influenced by environmental factors or potential microbial contamination during the shelf life. However, the current sealing method for such packages adopts mechanical equipment sealing, such as a capping machine, and when the mechanical equipment performs the sealing process, the direct mechanical contact and mutual friction often cause appearance defects and metal contamination particles on the surfaces of the container and the metal cover, thereby greatly endangering the quality safety of medicines and foods. Therefore, there is a need to find an effective capping process to achieve non-contact effective sealing of containers with metal lids, so as to avoid the occurrence of package appearance defects and metal contamination particles, thereby ensuring the quality safety of pharmaceuticals and food products.

Electromagnetic pulse forming is a high-efficiency, rapid and environment-friendly metal forming processing technology. As described in the document "Psyk V, Risch D, Kinsey B L, et al, electromagnetic forming-a review [ J ]. Journal of materials Processing Technology,2011,211(5): 787-. Research in the literature "Fang J, Mo J, Li J, et, electromagnetic pulse applied progressive drawing [ J ] procedia engineering,2014,81: 801-.

Disclosure of Invention

The invention aims to at least solve the technical problems in the prior art, and particularly provides an electromagnetic pulse sealing device and method for a metal-covered container, which can carry out non-contact sealing packaging and reduce the damage to the metal surface.

In order to achieve the purpose, the invention provides an electromagnetic pulse sealing device for a metal cover container, which comprises a spiral coil, wherein the spiral coil is electrically connected with a pulse current generating device to form a closed loop, a magnetic field concentrator is sleeved in the spiral coil, a sealing processing hole is vertically formed in the magnetic field concentrator and used for accommodating the metal cover and the container, a pressing mechanism is fixedly arranged right above the sealing processing hole, and a height-adjustable base used for placing the container is fixedly arranged right below the sealing processing hole.

The pulse current generating device is used for generating pulse current, the spiral coil is used for generating an electromagnetic field, the magnetic field concentrator is used for concentrating the magnetic field together, and the sealed processing hole is used for accommodating the metal cover, so that the metal cover is located in the magnetic field. The upper side and the lower side of the magnetic field concentrator are both sunken towards the middle part, and the magnetic field concentrator is used for concentrating a magnetic field in the sealing processing hole, increasing the intensity of the magnetic field and improving the sealing effect. The strong pulse current generated by the electromagnetic pulse is utilized to generate electromagnetic force to deform the metal cover so as to lock the metal cover on the container.

In the scheme, the method comprises the following steps: the spiral coil is formed by cutting rigid cylindrical metal along a spiral rotating path to form a conducting wire, two ends of the spiral coil are respectively and electrically connected with the pulse current generating device to form a closed loop, and the magnetic field concentrator is completely positioned in the surrounding center of the spiral coil and mutually fixed to form an integrated structure. The structure is compact.

In the scheme, the method comprises the following steps: and turn-to-turn insulation is further arranged on the spiral coil, extends towards the outer side of the spiral coil and wraps the spiral coil. The electromagnetic force can be limited to a region advantageous for sealing processing, and the sealing firmness can be improved.

In the scheme, the method comprises the following steps: the turn-to-turn insulation is formed by solidifying insulating glue, and the thickness of the insulation wrapping the outer side of the spiral coil exceeds 1 mm. Insulating glue is adopted for solidification to carry out turn-to-turn insulation and spiral coil outer surface insulation, so that the insulating property is ensured, and the mechanical strength and the service life of the coil are improved.

In the scheme, the method comprises the following steps: when the thickness s of the metal cover skirt is smaller than 0.05mm, the number of turns n of the wire is 1, and when s is larger than or equal to 0.05mm, the number of turns n of the wire is increased by 1 turn every time s is increased by 0.02 mm. The applicability to containers of different specifications is ensured.

In the scheme, the method comprises the following steps: the height-adjustable base comprises a fixed base, a height adjusting rod is installed on the fixed base, a container mounting seat is connected to the height adjusting rod, and a fixing clamp is arranged on the container mounting seat. Set up mounting fixture and can be applicable to the not container of equidimension, improve application scope, and the fixed container that the clamp force that produces can be better.

In the scheme, the method comprises the following steps: the pressing mechanism is a piston, and the lower end face of an extension rod of the piston is larger than the upper surface of the metal cover. The piston can be used for better adjusting the compression force, the upper surface of the lower end face of the extension rod, which is larger than the metal cover, can ensure that the metal cover is completely compressed on the container, and the sealing effect is further improved.

In the scheme, the method comprises the following steps: the upper surface and the lower surface of the magnetic field concentrator are both inwards sunken to form a conical surface, a micro-gap is formed in one side edge of the magnetic field concentrator, the width of the micro-gap is less than or equal to 3mm, and the upper surface, the lower surface and the outer side wall of the magnetic field concentrator are all covered with insulating films. The provision of the insulating film can further enhance the definition of the distribution range of the electromagnetic force.

The invention also provides an electromagnetic pulse sealing method for the metal-covered container, which comprises the electromagnetic pulse sealing device for the metal-covered container in the scheme, and further comprises the following steps:

s1: adjusting the caliber of the fixing clamp to the proper size of the container to be sealed, and placing the container to be sealed on the fixing clamp;

s2: tightening the caliber of the fixing clamp, fixing the container to be sealed, and then placing the metal cover on the container;

s3: extending the height adjusting rod, and moving the positions of the container and the metal cover upwards until the metal cover is completely positioned in the sealed processing hole of the magnetic field concentrator;

s4: adjusting the pressing mechanism to press the metal cover on the container;

s5: operating the pulse current generating device, introducing pulse current into the spiral coil, and performing electromagnetic pulse sealing processing on the metal cover and the container;

s6: after the processing is finished, the pressing mechanism is loosened, the height adjusting rod is shortened, the fixing clamp is loosened, and the sealed container is taken out.

In the scheme, the method comprises the following steps: in step S4, the pressing mechanism is a piston, and when the pressing mechanism is adjusted, fluid is injected into the piston cylinder, so as to push out the piston rod of the piston, and the metal cover is pressed on the container by the pressing force generated by the piston.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the integral structure of the spiral coil and the magnetic field concentrator and the insulation link thereof are designed, electromagnetic force is limited in a processing area having an effect on the sealing of the metal cover, the electromagnetic sealing of the container with the metal cover is realized by matching with a device which comprises a piston and a base and is used for adjusting and fixing the metal cover and the container, the whole sealing process is completed by the electromagnetic force, the sealing device does not contact with the container and the metal cover, and any appearance defect, damage and even particle pollution can not be caused.

The invention utilizes the uniformly distributed electromagnetic force to replace the uneven mechanical force of the traditional packaging and sealing equipment, overcomes the surface defects and the generation of metal pollution particles caused by the action of the mechanical force, and ensures that the sealing of the container with the metal cover is quicker, more effective and has no defect. Compared with mechanical force, the electromagnetic force control is more convenient and the precision is higher.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a perspective view of a magnetic field concentrator and coil in the apparatus of the present invention;

FIG. 3 is a schematic view of the height adjustment base of the device of the present invention;

fig. 4 is a flow chart of the steps of the method of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The electromagnetic pulse sealing device for the metal cover container shown in the figures 1-3 comprises a spiral coil 1, wherein the spiral coil 1 is electrically connected with a pulse current generating device 5 to form a closed loop, a magnetic field concentrator 2 is sleeved in the spiral coil 1, a sealing processing hole 2a is vertically formed in the magnetic field concentrator 2, the sealing processing hole 2a is used for accommodating the metal cover 3 and the container 4, a pressing mechanism 6 is fixedly arranged right above the sealing processing hole 2a, and a height-adjustable base 7 used for placing the container 4 is fixedly arranged right below the sealing processing hole 2 a.

Preferably, the spiral coil 1 is formed by cutting a rigid cylindrical metal along a spiral rotation path to form a wire, and two ends 9 of the spiral coil 1 are respectively electrically connected with the pulse current generating device 5 to form a closed loop, and the magnetic field concentrator 2 is completely positioned in the surrounding center of the spiral coil 1 and fixed with each other to form an integrated structure.

Preferably, spiral coil 1 is further provided with inter-turn insulation 12, and inter-turn insulation 12 extends to the outside of spiral coil 1 and encloses spiral coil 1.

Preferably, the inter-turn insulation 12 is formed by curing an insulating paste and is wrapped around the outer side of the spiral coil 1 to a thickness of more than 1 mm.

Preferably, when the thickness s of the skirt of the metal cover 3 is less than 0.05mm, the number of turns n of the wire 11 is 1, and when s is greater than or equal to 0.05mm, the number of turns n of the wire 11 increases by 1 for every 0.02mm increase in s.

Preferably, the height-adjustable base 7 comprises a fixed seat 15, a height adjusting rod 14 is mounted on the fixed seat 15, a container mounting seat 13 is connected to the height adjusting rod 14, and a fixing clamp is arranged on the container mounting seat 13.

The hold-down mechanism 6 is a piston, and the lower end surface of an extension rod of the piston is larger than the upper surface of the metal cover 3. The upper side and the lower side of the magnetic field concentrator 2 are both inwards recessed to form a conical surface, a micro gap 8 is formed in one side edge of the magnetic field concentrator 2, the width of the micro gap 8 is less than or equal to 3mm, and the upper surface, the lower surface and the outer side wall of the magnetic field concentrator 2 are all covered with an insulating film 10.

As shown in fig. 4, the present invention further provides an electromagnetic pulse sealing method for a metal-covered container, including the electromagnetic pulse sealing device for a metal-covered container in the above scheme, further including the following steps:

s1: adjusting the caliber of the fixing clamp to the proper size of the container 4 to be sealed, and placing the container 4 to be sealed on the fixing clamp;

s2: tightening the caliber of the fixing clamp, fixing the container 4 to be sealed, and then placing the metal cover 3 on the container 4;

s3: extending the height adjusting rod 14, moving the positions of the container 4 and the metal cover 3 upwards until the metal cover 3 is completely positioned in the sealing processing hole 2a of the magnetic field concentrator 2;

s4: adjusting the pressing mechanism 6 to press the metal cover 3 on the container 4;

s5: operating the pulse current generating device 5, introducing pulse current into the spiral coil 1, and performing electromagnetic pulse sealing processing on the metal cover 3 and the container 4;

s6: after the processing is finished, the hold-down mechanism 6 is released, the height adjusting rod 14 is shortened, the fixing clamp is released, and the sealed container 4 is taken out.

In step S4, the pressing mechanism 6 is a piston, and when the pressing mechanism 6 is adjusted, fluid is injected into the piston cylinder to push out the piston rod of the piston, so that the metal cover 3 is pressed against the container 4 by the pressing force generated by the piston.

The following examples take a medical 7mL penicillin bottle and a matched aluminum alloy cover thereof as an object to be sealed:

the diameter of the aluminum cover is 20mm, the thickness of the cover skirt is 0.03mm, the height is 9mm, the diameter of the bottom of the penicillin bottle is 22mm, the diameter of the bottle mouth is 19.6mm, and the height is 39.7 mm.

The vial and its associated aluminum alloy cap were placed in the apparatus described above, and the rated voltage and discharge energy of the pulse current generating apparatus 5 were set to 20kV, 14kJ, and the discharge voltage was set to 5kV, and the operation was performed according to the method described above.

The aluminum cover is inwardly necked down under the action of electromagnetic force, and is completely locked on the penicillin bottle mouth flange, the surface of the aluminum cover is smooth, and the aluminum cover and the penicillin bottle can resist manual torsion force. The method has the advantages of meeting the sealing requirement of the container, having good surface quality of the container, no defect, high sealing speed of equipment, simple operation, easy automation control and meeting the large-scale integrated industrial production condition.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.