CN112077900A - A kind of pre-unwinding and pulling film and punching device - Google Patents

Abstract

The invention discloses a pre-unwinding film-winding and punching device. Meanwhile, the pre-placing mechanism accommodates the aluminum foil film while detecting the length of the aluminum foil film. And when the aluminum foil film reaches the preset length, the control device controls the film releasing structure to stop releasing the film. The punching mechanism punches the aluminum foil film to form the packaging film, and meanwhile, the film pulling and rolling mechanism pulls and rolls the waste film. In the process of rolling up the waste film by the film rolling mechanism, the length of the aluminum foil film in the pre-releasing mechanism is shortened, and the controller controls the film releasing mechanism to release the aluminum foil film, so that the aluminum foil film in the pre-releasing mechanism is always maintained at the preset length. The pre-placing mechanism can maintain the stable tension on the aluminum foil film, and the aluminum foil film waste caused by the fact that the aluminum foil films with different lengths are pulled out by the film pulling and rolling mechanism due to the tension is avoided.

Description

A kind of pre-unwinding and pulling film and punching device

technical field

The invention relates to the technical field of packaging equipment, in particular to a pre-rolling film and a punching device.

Background technique

Reagent cards, reagent strips, etc. used for medical testing are generally filled first in production, and then sealed with aluminum foil. The sealing process involves the punching, transfer covering and sealing and welding of the aluminum foil film. After the aluminum foil film is punched and rolled, the force is too large or the force is uneven, and the aluminum foil film is prone to distortion and even breakage. In the prior art, an air cylinder is used to pull out the film roll on the film unwinding drum to a certain length in advance, so as to reduce the force on the aluminum foil film during the pulling process.

However, each stroke of the cylinder is fixed, and the diameter of the film roll is constantly changing, so the length of each film release is not fixed. This leads to the lack of fixed tension during the film rolling process of the film rolling motor, so that many uncut aluminum films are also rolled up, resulting in waste of aluminum foil films and increased production costs.

Therefore, how to avoid waste of aluminum foil is a technical problem that those skilled in the art need to solve urgently.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a pre-unwinding film and punching device, which unwinds the aluminum foil film with a preset length through a pre-unwinding mechanism to ensure that the tension is fixed during the film pulling process, thereby avoiding waste of the aluminum foil film.

In order to achieve the above purpose, the present invention provides a pre-unwinding film and a punching device, including a film-unwinding mechanism for releasing an aluminum foil roll, a punching mechanism for punching the aluminum foil film to form a packaging film, and a punching mechanism for pulling and rolling. A pull-and-roll film mechanism for waste film, a pre-release mechanism for accommodating an aluminum foil film of a preset length is arranged between the film release mechanism and the punching mechanism, and a pre-release mechanism connected to the pre-release mechanism and the film release mechanism is also provided. . A controller used to control the film releasing mechanism to release a preset length of aluminum foil film.

Preferably, the pre-positioning mechanism includes a guide box cover for accommodating the aluminum foil film and a blowing nozzle for blowing air into the guide box cover to unfold the aluminum foil film, and a baffle plate is provided at the bottom of the guide box cover, A film in-position sensor for detecting whether the aluminum foil film is in place with the baffle is arranged under the baffle, and the film in-position sensor is connected with the controller.

Preferably, the air blowing nozzle is connected to the air source, and a proportional-integral pressure regulating valve for adjusting the air volume is provided between the air blowing nozzle and the air source.

Preferably, the film unwinding mechanism includes a film unwinding shaft for loading the aluminum foil roll and a film unwinding motor for driving the film unwinding shaft to rotate.

Preferably, the film-pulling mechanism includes a film-pulling driving roller, a film-pulling driven roller that is attached to the film to clamp the waste film, and a film-pulling motor that drives the driving film-pulling roller to rotate to pull the aluminum foil film. , and also includes a film running length sensor located between the film pulling mechanism and the punching mechanism to detect the number of punching holes in the waste film, and the film running length sensor is connected with the controller.

Preferably, the punching mechanism includes an upper top seat, a punching knife assembly and a punching motor, the upper top seat is provided with a cutting plate that cooperates with the cutting knife to punch out the packaging film, and the punching motor is connected to the punching motor. The punching knife assembly is connected to drive the punching knife assembly to move toward the upper top seat.

Preferably, a lower base is arranged below the upper top seat, and the two are connected by a guide column. The punching mechanism further includes a lower base located between the upper top seat and the lower base and sleeved on the guide column. The outer peripheral slider, the punching knife is arranged on the side of the slider facing the upper top seat.

Preferably, the punching motor is connected to a first toggle link, the sliding block is hinged to one end of a second toggle link, and the other end of the second toggle link is hinged to the first toggle link.

Preferably, the punching blade assembly includes a rod-shaped punching blade, which is provided with a plurality of adsorption holes, and the adsorption holes are connected with a vacuuming mechanism to adsorb the packaging film.

Preferably, the punching assembly further includes a film pressing plate, a micro cylinder is provided on the side of the sliding block facing the upper top seat, and the piston of the micro air cylinder is connected with the film pressing plate to push it to be connected with the film pressing plate. The cutting board cooperates with punching the packaging film.

In the pre-unwinding film and punching device provided by the present invention, in the working process, the controller firstly controls the film-unwinding mechanism to release the aluminum foil film. At the same time, the pre-placement mechanism accommodates the aluminum foil film, and at the same time detects the length of the aluminum foil film. When the aluminum foil film reaches the preset length, the control device controls the film-releasing structure to stop film-releasing. The punching mechanism punches the aluminum foil film to form the packaging film, and at the same time, the film pulling mechanism pulls and winds the waste film. During the process of winding the waste film by the film pulling mechanism, the length of the aluminum foil film in the pre-release mechanism is shortened, and the controller controls the film release mechanism to release the aluminum foil film, so that the aluminum foil film in the pre-release mechanism is always maintained at the preset length. The pre-release mechanism can keep the pulling force on the aluminum foil film stable, and avoid the aluminum foil film of different lengths being pulled out by the film pulling mechanism due to the pulling force, resulting in waste of the aluminum foil film.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

1 is a schematic structural diagram of a pre-unwinding film and a punching device provided by the present invention;

Fig. 2 is the enlarged view of A in Fig. 1;

FIG. 3 is an enlarged view of the punching mechanism in FIG. 1 .

Wherein, the reference numerals in Fig. 1 to Fig. 3 are:

1. Film release mechanism 1.1, film release motor 1.2, film release motor fixing seat 1.3, film release shaft 1.4, first sensor fixing plate 1.5, film roll residual sensor 2, pre-release mechanism 2.1, guide box cover 2.2, air blow Nozzle 2.3, film position sensor 2.4, second sensor fixing plate 2.5, baffle plate 3, punching mechanism 3.1, upper top seat 3.2, lower base 3.3, guide column 3.4, slider 3.5, punching knife 3.6, cutting plate 3.7, press Film plate 3.8, micro cylinder 3.9, punching motor fixing seat 3.10, punching motor 3.11, driving shaft 3.12, first toggle lever 3.13, second toggle lever 4, film pulling mechanism 4.1, film pulling motor 4.2, pulling Film motor fixing seat 4.3, film-pulling drive roller 4.4, film-pulling driven roller 4.5, pressure bar 4.6, pressure spring 4.7, pressure plate 4.8, film waste film roller 5, film running length sensor 6, first guide roller 7, The second guide roller 8, the third guide roller 9, the aluminum foil roll 10, and the aluminum foil film.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Please refer to FIGS. 1 to 3. FIG. 1 is a schematic structural diagram of the pre-unwinding film and punching device provided by the present invention; FIG. 2 is an enlarged view of A in FIG. 1; Enlarge the image.

The structure of the pre-unwinding film and punching device provided by the present invention is shown in Figs. Among them, the film unwinding mechanism 1 is used to rotate the aluminum foil roll 9 to unwind the aluminum foil film 10 . The pre-placement mechanism 2 is used for accommodating the unfolded aluminum foil film 10 and detecting the length of the unfolded aluminum foil film 10 . The pre-release mechanism 2 is also connected to the controller. When the aluminum foil film 10 is unfolded to a preset length, the controller controls the film release mechanism 1 to stop the film release. The punching mechanism 3 is used for punching the unfolded aluminum foil film 10 into a packaging film. The waste film remaining after punching is pulled out from the punching mechanism 3 by the film pulling mechanism 4 and rolled up. The controller may specifically be a PLC controller or an industrial computer or the like.

Optionally, the pre-placement mechanism 2 guides the box cover 2.1, the blowing nozzle 2.2 and the baffle 2.5. Specifically, the air blowing nozzle 2.2 is installed on the top of the guide box cover 2.1, and the baffle 2.5 is installed at the bottom of the guide box cover 2.1, and is located below the air blowing nozzle 2.2. The air blowing nozzle 2.2 is connected to the air delivery mechanism and blows air to the bottom of the guide box cover 2.1. The aluminum foil film 10 enters between the guide box cover 2.1 and the blowing nozzle 2.2, unfolds under the action of the gas blowing tension, and is attached to the baffle 2.5. Among them, the air blowing nozzle 2.2 is connected to the proportional-integral pressure regulating valve, and the proportional-integral pressure regulating valve ensures that the air flow rate can be accurately adjusted. The guide box cover 2.1 is also provided with a film position sensor 2.3 and a second sensor fixing plate 2.4 located below the baffle plate 2.5. The film position sensor 2.3 is connected with the PLC controller, and feeds back the position information of the aluminum foil film 10 to the PLC controller. If the aluminum foil film 10 is not in place with the baffle plate 2.5, the PLC controller controls the film release mechanism 1 to release the film. Of course, the user can also use a vacuum pump or a fan, etc., to draw air at the bottom of the guide box cover 2.1, and unfold the aluminum foil film 10 through negative pressure.

Optionally, the film releasing mechanism 1 includes a film releasing motor 1.1, a film releasing motor fixing seat 1.2, and a film releasing rotating shaft 1.3. The aluminum foil roll 9 is sleeved on the outer circumference of the film unwinding shaft 1.3. The film discharge motor 1.1 is installed on the film discharge motor fixing seat 1.2 and the machine shaft is connected with the film discharge shaft 1.3. The film-releasing motor 1.1 drives the film-releasing shaft 1.3 to unwind the aluminum foil roll 9 .

Further, the film unwinding mechanism 1 also includes a film roll remaining amount sensor 1.5 for detecting the remaining amount of the aluminum foil roll 9 . Specifically, the film roll residual sensor 1.5 is mounted on the first sensor fixing plate 1.4, and the first sensor fixing plate 1.4 is connected to the film discharging motor fixing base 1.2. The film roll residual sensor 1.5 detects the consumption and usage of the aluminum foil roll 9 in real time and feeds back to the PLC. For example, when the aluminum foil roll 9 is about to be used up, the PLC controls the aluminum foil exhaustion alarm to give an alarm, prompting the operator to replace it in time, so as to achieve intelligent production monitoring.

Optionally, the punching mechanism 3 includes an upper top seat 3.1 and a lower base 3.2, a cutting board 3.6 is installed in the upper top seat 3.1, and a punching knife 3.5 corresponding to the position of the cutting board 3.6 is arranged in the lower base 3.2, and the punching knife 3.5 Driven by the punching motor 3.10, it can be raised and lowered in the vertical direction, and then cooperate with the cutting board 3.6 to cut the aluminum foil film 10.

Optionally, the lower base 3.2 and the upper top seat 3.1 are connected through a guide column 3.3, a slider 3.4 is also provided between the lower base 3.2 and the upper top seat 3.1, and the slider 3.4 is sleeved on the outer periphery of the guide column 3.3 through a linear bearing , the punching knife 3.5 is installed on the side of the slider 3.4 facing the upper top seat 3.1. The slider 3.4 is driven by the punching motor 3.10 to move up and down along the guide column 3.3, thereby driving the punching knife 3.5 to rise and fall in the vertical direction.

Optionally, the upper top seat 3.1 is provided with a film penetration hole for the aluminum foil film 10 to pass through, a cutting board mounting hole is provided above the film penetration hole, and a space for accommodating the punching knife 3.5 is provided below the cutting board mounting hole. The upper end of the punching knife 3.5 is provided with a lamination plate 3.7, as shown in Fig. 3, the lamination plate 3.7 is located in the abdication groove. Specifically, the side of the slider 3.4 facing the upper top seat 3.1 is also provided with a miniature cylinder 3.8, the miniature cylinder 3.8 is connected to the air circuit system, and the film pressing plate 3.7 is connected and fixed on the piston rod of the miniature cylinder 3.8. The lamination plate 3.7 adopts an independent split structure, and each part of the structure is connected to the micro cylinder 3.8 respectively. The split type lamination plate 3.7 achieves the effect of precise control through PID control, so that the lamination plate 3.7 has a long service life and is not easy to fail.

Further, the punching knives 3.5 can be arranged in two or more groups, and each group of punching knives 3.5 is set independently. In addition to opening a number of adsorption holes in the punching knife 3.5, the adsorption holes are connected to a vacuum system for adsorbing the packaging film during punching. There is also a groove on the top of the adsorption hole, which is convenient for releasing the packaging film after punching and preventing sticking and adsorption. There is a slight height difference between the multiple sets of punching knives 3.5, which ensures that the punching knives 3.5 operate synchronously but do not punch the packaging film at the same time, so that there is a slight time difference in the punching process of each punching knife 3.5, so that the aluminum foil film 10 can be maintained in good force and punching. Cut more smoothly and improve punching quality.

Optionally, a punching motor fixing seat 3.9 is connected below the lower base 3.2, and the punching motor 3.10 is installed on the punching motor fixing seat 3.9. The output shaft of the punching motor 3.10 is connected to the driving shaft 3.11, and the first toggle lever 3.12 is mounted on the driving shaft 3.11. The first toggle link 3.12 and the second toggle link 3.13 are hinged through the first pin shaft, and the second toggle link 3.13 and the slider 3.4 are hinged through the second pivot shaft. When the punching motor 3.10 rotates forward and reverse, it drives the two toggle rods 3.12 and 3.13 to swing, which in turn drives the slider 3.4 and the punching knife 3.5 installed on it to move up and down, so as to realize automatic and smooth reciprocating lifting. The punching mechanism 3 uses the punching motor 3.10 to drive the toggle lever, and then drives the punching method of the punching knife 3.5 to punch out the packaging film. The control process is precise, stable and reliable, which not only increases the force, but also achieves the effect of shock absorption and noise reduction.

After the punching is completed, the punching motor 3.10 drives the two toggle rods 3.12 and 3.13 to swing in the opposite direction, driving the slider 3.4, the punching knife 3.5 and the lamination plate 3.7 to move downward. At the same time, the film-pulling motor 4.1 starts to act to roll up the punched waste film. The film-pulling mechanism 4 includes a film-pulling motor 4.1, a film-pulling driving roller 4.3, a film-pulling driven roller 4.4 and a waste film-rolling roller 4.8. Among them, the film-pulling motor 4.1 is installed on the film-pulling motor fixing seat 4.2, the output shaft of the film-pulling motor 4.1 is connected with the film-pulling driving roller 4.3, and the film-pulling driven roller 4.4 is in phase with the film-pulling driving roller 4.3 Fitting, the two compress the waste film. The film-pulling motor 4.1 drives the film-pulling active roller 4.3 to rotate, thereby pulling the waste film out of the punching mechanism 3 . In addition, the waste film roll 4.8 is connected with the driving film roll 4.3 through a belt, and the roll film driving roll 4.3 rotates while driving the waste film roll 4.8 to rotate, thereby making the waste film wrap around the outer circumference of the waste film roll 4.8.

Optionally, the film pulling mechanism 4 further includes a pressing rod 4.5, a pressing spring 4.6 and a pressing plate 4.7. The pressure rod 4.5 is connected with the rotating shaft of the driven roller 4.4 for pulling the film, the pressure plate 4.7 is fixedly arranged, and the pressure spring 4.6 is located between the pressure rod 4.5 and the pressure plate 4.7. The compression spring 4.6 pushes the film-pulling driven roller 4.4 against the film-pulling driving roller 4.3 through the pressing rod 4.5, so that the film-pulling driven roller 4.4 and the film-pulling driving roller 4.3 can pull the waste film by friction.

Due to the thin thickness of the aluminum foil film 10, it cannot withstand excessive tensile stress. Therefore, during the punching process, the film releasing mechanism 1 first releases the aluminum foil film 10 with a preset length, and then the film pulling mechanism 4 gradually pulls the aluminum foil film 10, while the punching mechanism 3 punches the packaging film. To ensure that the pre-released aluminum foil film 10 is always fully unfolded, a pre-release mechanism 2 for fully unfolding the aluminum foil film 10 is also provided between the film release mechanism 1 and the punching mechanism 3 .

In addition, in order to tension the aluminum foil film 10, three guide rollers are sequentially arranged along the punching and rolling directions. A first guide roller 6 is provided at the exit of the pre-release mechanism 2 , a second guide roller 7 is provided at the entrance of the punching mechanism 3 , and a third guide roller 8 is located between the punching mechanism 3 and the film pulling mechanism 4 . A film running length sensor 5 is arranged between the third guide roller 8 and the punching mechanism 3 . The film running length sensor 5 is used to detect the number of punching holes in the aluminum foil film 10, and feed the data back to the PLC. The PLC controls the film pulling motor 4.1 to stop according to the number of punching holes. The rolling film mechanism 4 also includes a film roll residual sensor 1.5, which detects the consumption and usage of the roll material in real time, and feeds back to the PLC. If the film roll is about to be used up, the alarm will prompt the operator to replace it in time to achieve intelligent production monitoring.

In this embodiment, the pre-unwinding film and the punching device are provided with a pre-release mechanism 2. The pre-release mechanism 2 spreads the aluminum foil film 10 on the guide box cover 2.1 by blowing tension, and makes the aluminum foil film 10 and the guide box cover 2.1. The bottom bezel 2.5 fits snugly in place. The film pulling mechanism 4 only needs to overcome the blowing tension when rewinding the waste film, so that the pulling force of the aluminum foil film 10 is very gentle and even and smooth, and will not be twisted, deformed or broken due to excessive force and uneven force. In addition, because the pre-blow square mechanism needs to keep the aluminum foil film 10 and the baffle 2.5 at the bottom of the guide box cover 2.1 in place. Therefore, the length of the guide box cover 2.1 aluminum foil film 10 remains unchanged, ensuring that the length of each film release is fixed and accurate.

It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply the existence of any such entity between these entities The actual relationship or sequence.

The pre-unwinding film and punching device provided by the present invention are described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A pre-unwinding film and a punching device, characterized in that it comprises a film releasing mechanism (1) for releasing an aluminum foil roll (9), a punching mechanism for punching an aluminum foil film (10) to form a packaging film (3) and a film-pulling mechanism (4) for pulling and winding the waste film, between the film-releasing mechanism (1) and the punching mechanism (3), an aluminum foil film ( 10) The pre-release mechanism (2), further comprising an aluminum foil film that is connected with the pre-release mechanism (2) and the film release mechanism (1) to control the film release mechanism (1) to release a preset length of aluminum foil film (10) Controller. 2. The pre-unwinding film and punching device according to claim 1, wherein the pre-unwinding mechanism (2) comprises a guide box cover (2.1) for accommodating the aluminum foil film (10) and a guide box cover (2.1) for accommodating the aluminum foil film (10) A blowing nozzle (2.2) for blowing air in the guide box cover (2.1) to unfold the aluminum foil film (10), a baffle plate (2.5) is arranged at the bottom of the guide box cover (2.1), and the baffle plate (2.5 ) is provided with a film position sensor (2.3) for detecting whether the aluminum foil film (10) is in place with the baffle plate (2.5), and the film position sensor (2.3) is connected to the controller. 3. The pre-unwinding film and punching device according to claim 2, wherein the blowing nozzle (2.2) is connected with the air source, and a A proportional-integral pressure regulating valve to adjust the air volume. 4. The pre-unwinding film and punching device according to claim 1, characterized in that the film-releasing mechanism (1) comprises a film-releasing shaft (1.3) for loading an aluminum foil roll (9) and a film-releasing shaft (1.3) for loading the aluminum foil roll (9) A film-releasing motor (1.1) that drives the film-releasing shaft (1.3) to rotate. 5. The pre-unwinding film and punching device according to claim 1, characterized in that, the film pulling mechanism (4) comprises a pulling film driving roller (4.3) and is attached to it to clamp the waste film A film-pulling driven roller (4.4) and a film-pulling motor (4.1) for driving the driving film-pulling roller (4.3) to rotate to pull the aluminum foil film (10), and a film-pulling mechanism (4.1) located on the film-pulling mechanism (4.3). ) and the punching mechanism (3), a film running length sensor (5) used to detect the number of punching holes in the waste film, and the film running length sensor (5) is connected with the controller. 6. The pre-rolling film and punching device according to any one of claims 1 to 5, wherein the punching mechanism (3) comprises an upper top seat (3.1) and a punching knife (3.5) assembly and a punching motor (3.10), the upper top seat (3.1) is provided with a cutting plate (3.6) that cooperates with the cutting knife to punch out the packaging film, the punching motor (3.10) is connected to the punching knife ( 3.5) The components are connected to drive the punching knife (3.5) component to move toward the upper top seat (3.1). 7. The pre-rolling film and punching device according to claim 6, characterized in that, a lower base (3.2) is arranged below the upper top seat (3.1), and the two are connected by a guide column (3.3), The punching mechanism (3) further comprises a sliding block (3.4) located between the upper top seat (3.1) and the lower base (3.2) and sleeved on the outer periphery of the guide column (3.3), so that the The punching knife (3.5) is arranged on the side of the sliding block (3.4) facing the upper top seat (3.1). 8. The pre-unwinding film and punching device according to claim 7, wherein the punching motor (3.10) is connected with the first toggle lever (3.12), and the sliding block (3.4) is connected with the first toggle lever (3.12). One end of the two toggle levers (3.13) is hinged, and the other end of the second toggle lever (3.13) is hinged with the first toggle lever (3.12). 9. The pre-rolling film and punching device according to claim 6, characterized in that, the punching knife (3.5) component comprises a rod-shaped punching knife (3.5), which is provided with a number of adsorption holes, the punching knife (3.5) The adsorption hole is connected with the vacuum pumping mechanism to adsorb the packaging film. 10. The pre-rolling film and punching device according to claim 7, wherein the punching knife (3.5) assembly further comprises a lamination plate (3.7), and the sliding block (3.4) faces the One side of the upper top seat (3.1) is provided with a miniature cylinder (3.8), and the piston of the miniature cylinder (3.8) is connected with the lamination plate (3.7) to push it to cooperate with the cutting plate (3.6) for punching Cut the packaging film.

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