CN218926574U - Laser marking assembly and sealing cover forming system - Google Patents

Abstract

The utility model discloses a laser marking assembly and a sealing cover forming system, and relates to anti-counterfeiting marking of a sealing cover, wherein the laser marking assembly comprises a conveying platform and laser marking equipment; the conveying belt in the conveying platform is configured to convey the aluminum foil, marking positions are arranged on the conveying platform, and the laser marking equipment is correspondingly arranged at the marking positions; the laser marking device is provided with a first laser marking head and a second laser marking head, wherein the first laser marking head is positioned right above the marking position, and the second laser marking head is positioned right below the marking position; the first laser marking head and the second laser marking head are configured to be started simultaneously to code the front side and the back side of the aluminum foil simultaneously. The scheme ensures that the code printing is simpler in program processing, the internal code and the external code are correspondingly engraved on one station at the same time, and the situation that the internal code and the external code are wrong due to program problems or data calling problems is reduced.

Description

Laser marking assembly and sealing cover forming system

Technical Field

The utility model relates to anti-counterfeiting marking of a sealing cover, in particular to a laser marking assembly and a sealing cover forming system.

Background

When the existing canned products are sold, in order to verify whether the canned products are genuine products or to facilitate tracing, identification codes (two-dimensional codes or bar codes) are marked on aluminum foils of easy-to-tear covers in the market, and after the aluminum foils are torn off of milk powder covers of the canned products, specific verification marks are not available on the canned products, so that the canned products cannot be traced.

Secondly, after the milk tank is unpacked and used for other purposes, the milk tank is filled with self-produced milk powder, an aluminum film is attached to a sealing cover, and an identification code (a two-dimensional code or a bar code) which is forged by self-marking is printed on the aluminum foil, so that the milk tank is camouflaged into an original milk tank by secondary processing; the consumer cannot effectively judge whether the identification code (two-dimensional code or bar code) on the aluminum foil is the original code or not simply by inquiring the identification code (two-dimensional code or bar code).

Currently, in order to solve such a problem, an inner code concept is proposed, namely, an outer code is marked on the front surface of an aluminum foil, and the inner code can be provided on the back surface of the aluminum foil; the internal code and the external code have relevance, and the aim of anti-counterfeiting verification is achieved by using the method. However, because the inner code and the outer code are positioned on different surfaces of the aluminum foil, asynchronous marking is adopted in the current marking design, namely, marking and marking the outer code are finished on one station firstly, and then the aluminum foil is transported to the next station for marking and marking the inner code; although the method can finish the inscription of the internal and external codes, the method is quite easy to make mistakes, so that the internal and external codes are not corresponding and have no relevance.

Disclosure of Invention

Aiming at the problems that the asynchronous marking can easily cause errors of internal and external codes and has no relevance, the utility model provides a novel technical scheme, namely a laser marking assembly capable of realizing synchronous marking of the internal and external codes.

Specifically, the detailed scheme provided by the utility model is as follows:

a laser marking assembly comprises a conveying platform and laser marking equipment; the conveying belt in the conveying platform is configured to convey the aluminum foil, marking positions are arranged on the conveying platform, and the laser marking equipment is correspondingly arranged at the marking positions;

the laser marking device is provided with a first laser marking head and a second laser marking head, wherein the first laser marking head is positioned right above the marking position, and the second laser marking head is positioned right below the marking position; the first laser marking head and the second laser marking head are configured to be started simultaneously to code the front side and the back side of the aluminum foil simultaneously.

Further, the laser marking assembly further comprises visual detection equipment, wherein a detection position is arranged on the conveying platform, is arranged along the conveying direction of the aluminum foil and is positioned at the downstream of the marking position;

the visual inspection device has a first visual camera and a second visual camera, the first visual camera being located above the inspection location and configured to scan a code marked on the front side of the aluminum foil by the first laser marking head; the second vision camera is positioned below the detection position and is configured to scan a code marked on the reverse side of the aluminum foil by the second laser marking head.

Further, the conveying platform is of a bracket structure and specifically comprises a bracket arm and a supporting plate fixed at the bottom of the bracket arm; at least two through holes are formed in the supporting plate to form the marking position and the detecting position respectively; the second laser marking head is used for marking codes on the back surface of the aluminum foil through corresponding through holes; and the second vision camera scans and identifies the code marked on the reverse side of the aluminum foil by the second laser marking head through the corresponding through hole.

Further, the laser marking device also comprises a water cooling device, wherein the water cooling device is arranged right opposite to the laser marking device; the water cooling apparatus is configured to reduce a temperature around the transport platform.

Further, the water cooling device comprises a machine body and a circulating system arranged in the machine body, an air pipe opening is formed in the end face, facing the conveying platform, of the machine body, and cold air generated by circulating cooling medium in the circulating system is conveyed to the conveying platform through the air pipe opening.

Further, the laser marking device further comprises a smoke purifying device, wherein the smoke purifying device is arranged beside the laser marking device and is configured to purify smoke and dust-containing gas generated in the marking and marking process.

Further, a sealing cover forming system is provided, which comprises a conveying line, a sealing cover stamping device, a laminating and pressing device, a shaping device and the laser marking assembly which are sequentially arranged;

the cover stamping device is configured to stamp a cover preset position;

the laminating and pressing equipment is in butt joint with the sealing cover stamping equipment and the laser marking assembly, and is configured to receive the stamped sealing cover and the coded aluminum foil and attach the coded aluminum foil to the stamped sealing cover to form a semi-finished product;

the shaping device is configured to shape the semi-finished product to a finished product.

Further, a rejecting structure is further arranged at the tail end of the conveying line, and the rejecting structure is configured to reject unqualified finished products.

The beneficial effects achieved by adopting the technical scheme are as follows:

in the scheme, the traditional asynchronous coding scheme is replaced by synchronous coding, namely two coding devices (a first laser marking head and a second laser marking head) are arranged on the same station, when an aluminum foil is transported to a marking position, the first laser marking head and the second laser marking head perform marking simultaneously, the first laser marking head is used for marking an external code on the front surface of the aluminum foil, and the second laser marking head is used for marking an internal code on the back surface of the aluminum foil; the internal and external codes are engraved simultaneously and correspondingly; compared with the traditional asynchronous code printing, the processor of the next process is used for coordinating whether the code printing of the previous process is finished or not, and simultaneously coordinating the codes corresponding to the previous process and having correlation; the scheme ensures that the code printing is simpler in program processing, the internal code and the external code are correspondingly engraved on one station at the same time, and the situation that the internal code and the external code are wrong due to program problems or data calling problems is reduced.

Drawings

Fig. 1 is a top layout view of the overall closure molding system of the present solution.

Fig. 2 is a structural layout diagram of a laser marking assembly in the present solution.

Fig. 3 is an integrated structure diagram of a laser marking device and a visual inspection device for synchronous marking.

Wherein: 10 closing cap stamping equipment, 20 tectorial membrane laminating equipment, 30 plastic equipment, 40 laser marking subassembly, 41 laser marking equipment, 42 visual inspection equipment, 43 water-cooling equipment, 44 smog purification equipment, 50 reject structure, 100 layer boards, 411 first laser marking head, 412 second laser marking head, 421 first visual camera, 422 second visual camera.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

In this embodiment, a cover forming system is provided, and coding forming of the cover is completed by using the cover forming system. Furthermore, when the milk powder can is assembled, the anti-counterfeiting effect can be very good.

In this scheme, referring to fig. 1 to 3, the cover forming system mainly includes a conveying line, and a cover stamping device 10, a laminating and pressing device 20, a shaping device 30 and a laser marking assembly 40 which are sequentially arranged; wherein the cap punching apparatus 10 is configured to punch a cap preset position; the specific shape is a stamped horse-mouth-shaped structure, so that the use of consumers is facilitated. The laser marking assembly 40 is mainly used for performing double-sided marking (i.e., double-sided coding) on the aluminum foil, and after the aluminum foil is marked, the aluminum foil and the cover will flow to the laminating and laminating device 20 at the same time. Specifically, the laminating and pressing device 20 is in butt joint with the cover stamping device 10 and the laser marking assembly 40, and the laminating and pressing device 20 is configured to receive the stamped cover and the coded aluminum foil and attach the coded aluminum foil to the stamped cover to form a semi-finished product.

In this scheme, the main innovative technology of performing double-sided marking on the aluminum foil, that is, in this embodiment, how to finish double-sided marking and coding on the aluminum foil becomes the technical problem to be solved in this application.

In the earlier design scheme, a scheme of marking and coding the front and back sides of the aluminum foil is also provided, namely two marking stations are arranged on a conveying line of the aluminum foil, and the two marking stations are arranged in tandem; the aluminum foil can be transported to the other marking station only after marking is completed on the previous marking station, and the two marking stations respectively mark the front side and the back side of the aluminum foil. And when the milk powder can is manufactured into a milk powder can finished product, the codes on the front and the back are favorable for consumers to recognize in an anti-counterfeiting way or favorable for merchants to recognize in a fleeing way.

The two stations are respectively arranged to code the front and back sides of the aluminum foil, the two stations are simply called asynchronous code printing, the function of double-sided code marking can be effectively completed in an asynchronous code printing mode, but in the actual processing process, the situation that the asynchronous code printing is easy to produce code printing errors, namely the situation that the internal code and the external code on the aluminum foil are not associated, and the internal code and the external code are not corresponding is found.

The method is analyzed, and the asynchronous coding mode is considered to have extremely high requirements on the identification function of the processor, so that if any one of the blocks or data errors occur, the problem that the internal and external codes are not corresponding to each other can be caused.

In short, conventional asynchronous coding requires a processor to ensure coordination between two different marking processes, and after the previous process is completed, the next process needs to be able to receive a completion signal of the previous process, and at the same time, the next process needs to call an identification code associated with the previous process. Therefore, under one procedure, the data processing capacity of the processor of the industrial personal computer is huge, the requirement on the processor is extremely high, and any blocking or error occurs, so that the problem that the internal code and the external code are not corresponding occurs.

Therefore, to solve the problem, a scheme of synchronous marking is provided, that is, two processes are combined on one process to be performed simultaneously through integration, after aluminum foils are in place, the aluminum foils are triggered simultaneously by an industrial personal computer processor, the internal code and the external code are associated and engraved simultaneously, and the situation that the code engraving errors are not corresponding can be avoided greatly.

Specifically, in this embodiment, the laser marking assembly 40 includes a conveying platform and a laser marking device 41; the conveying belt in the conveying platform is configured to convey the aluminum foil, marking positions are arranged on the conveying platform, and the laser marking equipment is correspondingly arranged at the marking positions; the laser marking device 41 is provided with a first laser marking head 411 and a second laser marking head 412, wherein the first laser marking head 411 is positioned right above the marking position, and the second laser marking head 412 is positioned right below the marking position; the first laser marking head 411 and the second laser marking head 412 are configured to be activated simultaneously to simultaneously code the front and back sides of the aluminum foil.

It can be understood that, in this embodiment, the laser marking device 41 is connected to the processor of the industrial personal computer, and when the aluminum foil has not reached the marking position, the marking information received by the first laser marking head 411 and the second laser marking head 412 has completed the association matching; when the aluminum foil reaches the marking position, the first laser marking head 411 and the second laser marking head 412 are triggered simultaneously, the first laser marking head 411 marks an external code on the front surface of the aluminum foil, and the second laser marking head 412 marks an internal code on the back surface of the aluminum foil; and the internal code and the external code are engraved at the same time. Through adopting the arrangement of above structure, realized the synchronous code printing of internal and external sign indicating number, found through practical test, compared with the asynchronous code printing before, this scheme has almost avoided the condition that the code printing is wrong.

In this embodiment, compared with the traditional asynchronous coding mode, the error probability is reduced, but the effect of 100% complete accuracy cannot be achieved; we therefore also propose herein a visual inspection apparatus 42.

Specifically, the laser marking assembly 40 further includes a visual detection device 42, and a detection position is arranged on the conveying platform, along the conveying direction of the aluminum foil and located at the downstream of the marking position; the visual inspection device 42 has a first visual camera 421 and a second visual camera 422, the first visual camera 421 being located above the inspection bits and configured to scan the code marked by the first laser marking head 411 on the front face of the aluminum foil; a second vision camera 422 is positioned below the detection bits and is configured to scan the code marked on the reverse side of the aluminum foil by the second laser marking head 412.

It can be understood that the first vision camera 421 is used to scan and detect whether the external code marked by the first laser marking head 411 has errors or not; the second vision camera 422 is used for scanning and detecting whether the inner code marked by the second laser marking head 412 has an error.

Optionally, the processor may also be used to perform correlation analysis on the external code identified by the first vision camera 421 and the external code identified by the second vision camera 422, so as to ensure that the internal code marked on the aluminum foil has correlation with the external code.

In this embodiment, the above-mentioned conveying platform is a bracket structure, and specifically includes a bracket arm and a pallet 100 fixed at the bottom of the bracket arm; at least two through holes are formed in the supporting plate 100 to form marking positions and detection positions respectively; the second laser marking head 412 is used for marking codes on the back surface of the aluminum foil through the corresponding through holes; the second vision camera 422 scans and recognizes the code marked on the reverse side of the aluminum foil by the second laser marking head 412 through the corresponding through hole.

Here, the conveying platform is designed into a bracket structure, which is mainly used for guaranteeing the stability of marking and detecting processes, the aluminum foil is transported to the supporting plate 100 of the conveying platform from the upstream, the aluminum foil is stably stopped at the through hole of the marking position, the first laser marking head 411 marks the outer code on the front surface of the aluminum foil, and the second laser marking head 412 marks the inner code on the back surface of the aluminum foil through the through hole.

After the etching is completed, the aluminum foil continues to advance by a step distance just at the through hole of the detection bit, the first vision camera 421 detects the outer code, and the second vision camera 422 detects the inner code through the through hole.

In this embodiment, in order to ensure the conveying efficiency of the aluminum foil, the aluminum foil is transported side by side, so that two marking positions and two detecting positions are formed side by side on the supporting plate. Correspondingly, the first vision camera 421 and the second vision camera 422 are respectively designed to be two; there are also two first laser marking heads 411 and second laser marking heads 412.

Optionally, in this solution, we also propose a cooling device specifically, considering the heat dissipation problem of the laser marking device 41 and the visual inspection device 42 during operation. Specifically, the laser marking device further comprises a water cooling device 43, wherein the water cooling device 43 is arranged right opposite to the laser marking device 41; the water cooling apparatus is configured to reduce a temperature around the transport platform.

The water cooling device 43 comprises a machine body and a circulating system arranged in the machine body, wherein an air pipe opening is formed in the end face, facing the conveying platform, of the machine body, and cold air generated by circulating cooling medium in the circulating system is conveyed to the conveying platform through the air pipe opening, so that the purpose of cooling is achieved.

Meanwhile, the laser marking device further comprises a smoke purifying device 44, wherein the smoke purifying device 44 is arranged beside the laser marking device 41, and the smoke purifying device 44 is configured to purify smoke and dust-containing gas generated in the marking and marking process.

After the aluminum foil is engraved with the inner and outer codes, it is combined with the cover in the laminating and pressing device 20 to form a semi-finished product, and then enters the shaping device 30, and the shaping device 30 is configured to shape the semi-finished product to form a cover finished product with the aluminum foil.

Meanwhile, in the scheme, a rejecting structure 50 is further arranged at the tail end of the conveying line, and the rejecting structure 50 is configured to reject unqualified finished products, wherein the unqualified finished products can be HG products capped in the stamping process, NG products of aluminum foils in the marking process, NG products of semi-finished products in the laminating process or NG products generated in the shaping process; either process, under the control of the processor of the industrial personal computer, is transported to the end of the conveyor line and then removed by the reject structure 50.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

It should be noted that, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or that the technical product is conventionally put in place when used, merely for convenience in describing the present technology and simplifying the description, and do not indicate or imply that the apparatus or element to be referred must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present technology. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "first," "second," "third," and the like are therefore used solely to distinguish one from another and are not to be construed as indicating or implying a relative importance. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present technology, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the art will be understood in a specific manner by those of ordinary skill in the art.

The foregoing is merely a preferred embodiment of the present technology, and it should be noted that, due to the limited text expression, there is objectively an infinite number of specific structures, and it will be apparent to those skilled in the art that several improvements, modifications or variations can be made, and the above technical features can be combined in an appropriate manner, without departing from the principles of the present technology; such modifications, variations and combinations, or the direct application of the concepts and aspects of the technology to other applications without modification, are intended to be within the scope of the present technology.

Claims (8)

1. A laser marking assembly comprising a delivery platform and a laser marking device (41); the conveying belt in the conveying platform is configured to convey the aluminum foil, marking positions are arranged on the conveying platform, and the laser marking equipment (41) is correspondingly arranged at the marking positions; it is characterized in that the method comprises the steps of,

the laser marking device (41) is provided with a first laser marking head (411) and a second laser marking head (412), the first laser marking head (411) is positioned right above the marking position, and the second laser marking head (412) is positioned right below the marking position; the first laser marking head (411) and the second laser marking head (412) are configured to be activated simultaneously to simultaneously code the front and back sides of the aluminum foil.

2. A laser marking assembly as claimed in claim 1, wherein the laser marking assembly (40) further comprises a visual inspection device (42), and wherein the conveyor platform is provided with inspection sites arranged along the transport direction of the aluminum foil and downstream of the marking sites;

the visual inspection device (42) has a first visual camera (421) and a second visual camera (422), the first visual camera (421) being located above the inspection location and configured to scan a code marked on the front side of the aluminum foil by the first laser marking head (411); the second vision camera (422) is located below the detection location and is configured to scan a code of the second laser marking head (412) marked on the reverse side of the aluminum foil.

3. A laser marking assembly as claimed in claim 2, wherein the transport platform is a cradle structure, and comprises in particular a cradle arm and a pallet (100) secured to the bottom of the cradle arm; at least two through holes are formed in the supporting plate (100) to form the marking position and the detecting position respectively; the second laser marking head (412) is used for marking codes on the back surface of the aluminum foil through corresponding through holes; the second vision camera (422) scans and identifies the code marked on the reverse side of the aluminum foil by the second laser marking head (412) through the corresponding through hole.

4. A laser marking assembly as claimed in claim 3, further comprising a water cooling device (43), the water cooling device (43) being disposed directly opposite the laser marking device (41); the water cooling device (43) is configured to reduce a temperature around the transport platform.

5. The laser marking assembly according to claim 4, wherein the water cooling device (43) comprises a machine body and a circulation system arranged in the machine body, an air pipe opening is formed in the end face, facing the conveying platform, of the machine body, and cold air generated by circulation of a cooling medium in the circulation system is conveyed to the conveying platform through the air pipe opening.

6. A laser marking assembly as claimed in claim 5, further comprising a smoke cleaning device (44), the smoke cleaning device (44) being arranged beside the laser marking device (41), the smoke cleaning device (44) being configured to clean smoke and dust-containing gas generated during marking and engraving.

7. A closure forming system comprising a conveyor line and, arranged in succession, a closure stamping device (10), a film laminating device (20), a shaping device (30) and a laser marking assembly (40) according to any one of claims 1 to 6;

the cover stamping device (10) is configured to stamp a cover preset position;

the laminating and pressing device (20) is in butt joint with the sealing cover stamping device (10) and the laser marking assembly (40), the laminating and pressing device (20) is configured to receive the stamped sealing cover and the coded aluminum foil, and the coded aluminum foil is attached to the stamped sealing cover to form a semi-finished product;

the shaping device (30) is configured to shape the semi-finished product into a finished product.

8. A closure forming system according to claim 7, wherein a reject structure (50) is further provided at the end of the conveyor line, the reject structure being configured to reject off-spec finished products.

Images