阅读说明：本技术 一种打孔膜的检测与切边装置及方法 (Detection and edge cutting device and method for punched film ) 是由 方小梅 吴金明 张启红 于 2019-10-15 设计创作，主要内容包括：本发明公开了一种打孔膜的检测与切边装置及方法,其中,所述装置包括挤出机构,用于挤出膜体；成型鼓,用于对膜体进行打孔,形成打孔膜；检测模组,用于检测打孔膜的偏离程度；纠偏辊,根据所述检测模组的检测结果对打孔膜纠偏；切边模组,对打孔膜进行切边；第一收卷模组,用于卷取切边后的打孔膜。本发明中,在膜体打孔形成打孔膜后,通过设置检测模组,对打孔膜的偏离程度进行检测,同时根据检测结果,纠偏辊作出相应的调整,以达到对打孔膜进行纠偏的目的,纠偏之后,利用切边模组对打孔膜进行切边,切边完成后对打孔膜进行卷取,从而达到对打孔膜进行切边的目的。(The invention discloses a detection and trimming device and a method of a punched film, wherein the device comprises an extrusion mechanism, a trimming mechanism and a trimming mechanism, wherein the extrusion mechanism is used for extruding a film body; the forming drum is used for punching the film body to form a punched film; the detection module is used for detecting the deviation degree of the punched film; the deviation correcting roller is used for correcting the deviation of the punching film according to the detection result of the detection module; the trimming module is used for trimming the punched film; the first winding module is used for winding the punched film after the edge cutting. According to the invention, after a punching film is formed by punching a film body, the deviation degree of the punching film is detected by arranging the detection module, meanwhile, the deviation correction roller is correspondingly adjusted according to the detection result so as to achieve the purpose of correcting the deviation of the punching film, after the deviation is corrected, the punching film is trimmed by using the trimming module, and after the trimming is finished, the punching film is coiled, so that the purpose of trimming the punching film is achieved.)

1. The utility model provides a detection and side cut device of punching film which characterized in that: comprises that

The extrusion mechanism is used for extruding the film body;

the forming drum is used for punching the film body to form a punched film;

the detection module is used for detecting the deviation degree of the punched film;

the deviation correcting roller is used for correcting the deviation of the punching film according to the detection result of the detection module;

the trimming module is used for trimming the punched film;

the first winding module is used for winding the punched film after the edge cutting.

2. The inspection and trimming device of perforated films according to claim 1, characterized in that: the forming drum is of a hollow structure, a forming hole is formed in the drum surface of the forming drum, an air suction opening is further formed in the forming drum, and a mesh cage is coated on the surface of the forming drum.

3. The inspection and trimming device of perforated films according to claim 2, characterized in that: the vacuum pump is connected to the air suction opening of the forming drum.

4. The inspection and trimming device of perforated films according to claim 1, characterized in that: the detection module is a CCD camera.

5. The inspection and trimming device of perforated films according to claim 1, characterized in that: the device also comprises a second winding module used for winding waste materials generated by trimming.

6. The inspection and trimming device of perforated films according to claim 1, characterized in that: and a group of tensioning rollers are arranged between the forming drum and the deviation rectifying roller.

7. A detection and trimming method of a punched film is characterized in that: comprises the following steps

The film body is extruded by the extruding mechanism;

punching the film body by using a forming drum to form a punched film;

detecting the deviation degree of the punching film;

correcting the punching film according to the detection result;

trimming the corrected punched film;

and (4) winding the punched film after trimming.

8. The method for inspecting and trimming perforated films according to claim 7, characterized in that: the detection of the deviation degree of the punching film comprises

Setting a theoretical central line of the punched film;

taking a picture of the punched film to obtain a picture;

respectively calculating the distances between the forming holes corresponding to the two sides of the punched film and the theoretical central line according to the photo and the theoretical central line to obtain distance values L1 and L2;

the degree of displacement △ L of the perforated film was L1-L2, where △ L > 0 indicates that the perforated film was displaced toward the side corresponding to L1, and △ L < 0 indicates that the perforated film was displaced toward the side corresponding to L2.

9. The method for inspecting and trimming perforated films according to claim 7, characterized in that: the deviation of the punching film is corrected according to the detection result, which comprises

If the deviation degree △ L of the perforated film is L1-L2 > L, the deviation degree of the perforated film towards the side corresponding to the L1 exceeds an allowable range, wherein L-the deviation amount is allowed, and the deviation correction roller moves △ L towards the side where the L2 is located so as to correct the deviation of the perforated film;

if the deviation degree △ L of the perforated film is L2-L1 > L, the deviation degree of the perforated film towards the side corresponding to the L2 is beyond the allowable range, wherein L-the allowable deviation amount, the deviation correction roller moves △ L towards the side where the L1 is located, and the deviation of the perforated film is corrected.

10. The method for inspecting and trimming perforated films according to claim 7, characterized in that: the method also comprises the step of coiling the waste material generated by the edge cutting.

Technical Field

The invention relates to the technical field of perforated film preparation equipment, in particular to a perforated film detection and trimming device and a perforated film detection and trimming method.

Background

Punching a film: plastic films with open pore structures are currently used in face layers of sanitary napkins and pantiliners.

Disclosure of Invention

According to the defects of the prior art, the invention provides the detection and edge cutting device and method for the punched film, which can be used for carrying out online deviation correction and edge cutting on the punched film, and is simple and efficient.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

as a first aspect of the present invention, there is provided a perforated film inspecting and trimming apparatus comprising

The extrusion mechanism is used for extruding the film body;

the forming drum is used for punching the film body to form a punched film;

the detection module is used for detecting the deviation degree of the punched film;

the deviation correcting roller is used for correcting the deviation of the punching film according to the detection result of the detection module;

the trimming module is used for trimming the punched film;

the first winding module is used for winding the punched film after the edge cutting.

As an optional implementation manner, the forming drum is a hollow structure, the drum surface of the forming drum is provided with forming holes, the forming drum is further provided with an air suction opening, and the surface of the forming drum is coated with a mesh cage.

As an alternative embodiment, a vacuum pump is further included, which is connected to the suction opening of the building drum.

As an optional implementation, the detection module is a CCD camera.

As an optional embodiment, the device further comprises a second winding module for winding waste materials generated by the trimming.

As an alternative embodiment, a set of tensioning rollers is arranged between the forming drum and the deviation correction rollers.

As a second aspect of the present invention, there is provided a method of inspecting and trimming a perforated film, comprising the steps of

The film body is extruded by the extruding mechanism;

punching the film body by using a forming drum to form a punched film;

detecting the deviation degree of the punching film;

correcting the punching film according to the detection result;

trimming the corrected punched film;

and (4) winding the punched film after trimming.

As an optional implementation mode, the detecting the deviation degree of the punching film comprises

Setting a theoretical central line of the punched film;

taking a picture of the punched film to obtain a picture;

respectively calculating the distances between the forming holes corresponding to the two sides of the punched film and the theoretical central line according to the photo and the theoretical central line to obtain distance values L1 and L2;

the degree of displacement △ L of the perforated film was L1-L2, where △ L > 0 indicates that the perforated film was displaced toward the side corresponding to L1, and △ L < 0 indicates that the perforated film was displaced toward the side corresponding to L2.

As an optional implementation manner, the rectifying the punching film according to the detection result includes

If the deviation degree △ L of the perforated film is L1-L2 > L, the deviation degree of the perforated film towards the side corresponding to the L1 exceeds an allowable range, wherein L-the deviation amount is allowed, and the deviation correction roller moves △ L towards the side where the L2 is located so as to correct the deviation of the perforated film;

if the deviation degree △ L of the perforated film is L2-L1 > L, the deviation degree of the perforated film towards the side corresponding to the L2 is beyond the allowable range, wherein L-the allowable deviation amount, the deviation correction roller moves △ L towards the side where the L1 is located, and the deviation of the perforated film is corrected.

As an alternative embodiment, the method further comprises the step of coiling the waste generated by the edge cutting.

The invention has the beneficial effects that:

according to the invention, after a punching film is formed by punching a film body, the deviation degree of the punching film is detected by arranging the detection module, meanwhile, the deviation correction roller is correspondingly adjusted according to the detection result so as to achieve the purpose of correcting the deviation of the punching film, after the deviation is corrected, the punching film is trimmed by using the trimming module, and after the trimming is finished, the punching film is coiled, so that the purpose of trimming the punching film is achieved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic representation of a prior art perforated membrane;

FIG. 2 is a schematic view of a perforated film inspecting and trimming apparatus according to the present embodiment;

FIG. 3 is a logic diagram of a method for inspecting and trimming a perforated film in accordance with the present embodiment;

FIG. 4 is a logic diagram of detecting the deviation of the perforated membrane according to this embodiment.

In the figure, 1-extrusion mechanism, 2-forming drum, 3-vacuum pump, 4-CCD camera, 5-deviation correcting roller, 6-trimming module, 7-first rolling module, 8-tensioning roller and 9-second rolling module.

Detailed Description

The following embodiments are provided to describe the embodiments of the present invention, and to further describe the detailed description of the embodiments of the present invention, such as the shapes, configurations, mutual positions and connection relationships of the components, the functions and operation principles of the components, the manufacturing processes and operation methods, etc., so as to help those skilled in the art to more fully, accurately and deeply understand the inventive concept and technical solutions of the present invention.

As a first aspect of the present invention, there is provided a device for inspecting and trimming a perforated film, as shown in FIG. 2, comprising

The extrusion mechanism 1 is used for extruding a film body;

the forming drum 2 is used for punching the film body to form a punched film;

the detection module is used for detecting the deviation degree of the punched film;

the deviation correcting roller 5 is used for correcting the deviation of the punching film according to the detection result of the detection module;

the trimming module 6 is used for trimming the punched film;

and the first winding module 7 is used for winding the punched film after the edge cutting.

According to the invention, after a punched film is formed by punching a film body, the deviation degree of the punched film is detected by arranging the detection module, and meanwhile, the deviation correction roller 5 is correspondingly adjusted according to the detection result so as to achieve the purpose of correcting the deviation of the punched film. According to the invention, through the arrangement of the detection module, the deviation correcting roller 5 and the trimming module 6, the deviation correction and trimming of the punched film can be realized, so that the edge of the punched film is neat, and the subsequent cutting is facilitated.

As an optional implementation manner, the forming drum 2 is a hollow structure, the head of the forming drum 2 is provided with forming holes, the forming drum 2 is further provided with an air suction opening, and the surface of the forming drum 2 is coated with a mesh cage. Further, a vacuum pump 3 is included, the vacuum pump 3 being connected to the suction opening of the building drum 2.

So, vacuum pump 3 carries out the evacuation to the shaping roller to make shaping hole department produce sufficient negative pressure, thereby punch to the film body, form the membrane of punching.

As an alternative embodiment, the detection module is a CCD camera 4.

Therefore, the CCD camera 4 shoots to obtain a picture, and the system can calculate the deviation degree of the punched film conveniently according to the picture.

As an alternative embodiment, a second winding module 9 is also included for winding the scrap generated by the trimming.

So, can realize the simple and convenient collection to the waste material that the side cut produced.

As an alternative embodiment, a set of tensioning rollers 8 is arranged between the forming drum 2 and the deviation-rectifying roller 5.

Thus, the perforated film can be kept tensioned by the tension roller 8, and the subsequent process is convenient to process.

As a second aspect of the present invention, as shown in FIG. 3, there is provided a method of inspecting and trimming a perforated film, comprising the steps of

The film body is extruded by the extruding mechanism;

punching the film body by using a forming drum to form a punched film;

detecting the deviation degree of the punching film;

correcting the punching film according to the detection result;

trimming the corrected punched film;

and (4) winding the punched film after trimming.

So, can realize rectifying and the side cut processing of punching the membrane, guarantee that the limit portion of punching the membrane is neat, the subsequent cutting of being convenient for.

As an alternative embodiment, as shown in FIG. 4, the detecting the deviation degree of the punching film comprises

Setting a theoretical central line of the punched film;

taking a picture of the punched film to obtain a picture;

respectively calculating the distances between the forming holes corresponding to the two sides of the punched film and the theoretical central line according to the photo and the theoretical central line to obtain distance values L1 and L2;

the degree of displacement △ L of the perforated film was L1-L2, where △ L > 0 indicates that the perforated film was displaced toward the side corresponding to L1, and △ L < 0 indicates that the perforated film was displaced toward the side corresponding to L2.

Therefore, by setting a theoretical central line and comparing the distances between the forming holes at the corresponding positions on the two sides of the punched film and the theoretical central line, the deviation degree of the punched film is judged according to the comparison result, and the method is simple and convenient. Preferably, the outermost two sets of shaping holes are selected and the distance between the two sets of shaping holes and the theoretical centerline is measured.

As an optional implementation manner, the rectifying the punching film according to the detection result includes

If the deviation degree △ L of the perforated film is L1-L2 > L, the deviation degree of the perforated film towards the side corresponding to the L1 exceeds an allowable range, wherein L-the deviation amount is allowed, and the deviation correction roller moves △ L towards the side where the L2 is located so as to correct the deviation of the perforated film;

if the deviation degree △ L of the perforated film is L2-L1 > L, the deviation degree of the perforated film towards the side corresponding to the L2 is beyond the allowable range, wherein L-the allowable deviation amount, the deviation correction roller moves △ L towards the side where the L1 is located, and the deviation of the perforated film is corrected.

As an alternative embodiment, the method further comprises the step of coiling the waste generated by the edge cutting.

The invention has been described in an illustrative manner, and it is to be understood that the invention is not limited to the precise form disclosed, and that various insubstantial modifications of the inventive concepts and solutions, or their direct application to other applications without such modifications, are intended to be covered by the scope of the invention. The protection scope of the present invention shall be subject to the protection scope defined by the claims.