Packaging material, method and device for detecting lateral displacement of packaging material, filling machine

Abstract

The application discloses a kind of package material, package material transverse deviation detection method and device, filling machine.According to the package material of the present application, it is used to continuously feed on filling machine and longitudinal seal and transverse seal, and the package material is provided with horizontal reference parallel to the width direction of package material and at least one oblique detection line with preset angle with horizontal reference.The present application is because horizontal reference and oblique detection line are at preset angle, when package material occurs transverse deviation, distance between horizontal reference and oblique detection line changes at fixed detection position, since package material moves at uniform speed, the distance change can be reflected by detecting device to detect the time of horizontal reference to oblique detection line, so as to accurately calculate transverse deviation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of liquid food packaging, in particular to a packaging material, a packaging material lateral deviation detection method and device, and a filling machine. BACKGROUND

[0002] In the field of liquid food (such as yogurt, juice) in small volume packaging containers, a filling machine is generally used for continuous online filling, that is, on the filling machine, the packaging material rolled into a bundle is unfolded, sterilized, longitudinally sealed to form a tubular object and filled, then transversely sealed and cut to form independent packaging. In order to ensure the reliability of the longitudinal and transverse sealing of the packaging material, the lateral deviation of the packaging material needs to be controlled during the movement of the packaging material after being unfolded on the filling machine. In the prior art, a pushing device is provided on one side edge of the packaging material to push the packaging material to adjust the lateral deviation, but the lateral deviation cannot be accurately detected. SUMMARY

[0003] The present application provides a packaging material, a packaging material lateral deviation detection method and device, and a filling machine for more accurately detecting the lateral deviation.

[0004] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0005] According to one aspect of the present application, a packaging material is provided for continuous feeding and longitudinal and transverse sealing on a filling machine, and the packaging material is provided with a horizontal reference parallel to the width direction of the packaging material and at least one inclined detection line at a preset angle with the horizontal reference.

[0006] Further, the horizontal reference is a longitudinal deviation detection barcode on the packaging material.

[0007] Further, along the movement direction of the packaging material, the inclined detection line is located at the rear or front of the longitudinal deviation detection barcode.

[0008] Further, the length of the inclined detection line is greater than or equal to 4mm.

[0009] Further, the width of the inclined detection line is greater than or equal to 1mm.

[0010] Further, the preset angle is 5° to 85°.

[0011] Further, the inclined detection line is two, and the two inclined detection lines are arranged in a V shape.

[0012] The application further provides a package transverse offset detection method, which comprises the following steps: detecting a horizontal reference and a slant detection line of a moving package at a fixed position, obtaining a time interval t1 corresponding to the distance between the horizontal reference and the edge of the slant detection line close to the horizontal reference, and a time interval t2 corresponding to the distance between the horizontal reference and the edge of the slant detection line far from the horizontal reference, and calculating a transverse offset according to the time interval t1 and the time interval t2.

[0013] Further, the transverse offset is calculated according to the time interval t1 and the time interval t2 by using the following formula:

[0014]

[0015] wherein X1 is the width of the slant detection line, α is a preset included angle between the horizontal reference and the slant detection line, L1 is a transverse reference amount, and L is the distance between the intersection of the horizontal reference and the slant detection line and a transverse displacement reference line.

[0016] Further, the horizontal reference is a longitudinal offset detection barcode on the package, a decoding signal of the longitudinal offset detection barcode detection completion is taken as a horizontal reference signal, the slant detection line is located at the rear part of the longitudinal offset detection barcode along the movement direction of the package, the time interval t1 is the time interval from the detection of the horizontal reference signal to the detection of the slant detection line, and the time interval t2 is the time interval from the detection of the horizontal reference signal to the detection completion of the slant detection line; or, the slant detection line is located at the front part of the longitudinal offset detection barcode along the movement direction of the package, the time interval t2 is the time interval from the detection of the slant detection line to the detection of the horizontal reference signal, and the time interval t1 is the time interval from the detection completion of the slant detection line to the detection of the horizontal reference signal.

[0017] The application further provides a package transverse offset detection device, which comprises: an electric eye fixedly arranged on a filling machine and used for detecting a horizontal reference and a slant detection line of a moving package; a controller connected with the electric eye and used for obtaining a time interval t1 corresponding to the distance between the horizontal reference and the edge of the slant detection line close to the horizontal reference, and a time interval t2 corresponding to the distance between the horizontal reference and the edge of the slant detection line far from the horizontal reference; and calculating a transverse offset f1 by using the following formula:

[0018]

[0019] wherein X1 is the width of the slant detection line, α is a preset included angle between the horizontal reference and the slant detection line, L1 is a transverse reference amount, and L is the distance between the intersection of the horizontal reference and the slant detection line and a transverse displacement reference line.

[0020] Further, the electric eyes include a first electric eye and a second electric eye; the controller further acquires a decoding signal of the detection of the longitudinal offset detection barcode as the horizontal reference signal according to detection signals of the first electric eye and the second electric eye.

[0021] The application further provides a filling machine comprising the aforementioned package transverse offset detection device.

[0022] In summary, according to the package, the package transverse offset detection method and device, and the filling machine of the application, since the horizontal reference and the inclined detection line form a preset angle, when the package transversely offsets, the distance between the horizontal reference and the inclined detection line changes at the fixed detection position, since the package can be regarded as moving at a constant speed during this period, the distance change can be reflected by detecting the time of the horizontal reference to the inclined detection line by the detection device, without knowing the specific moving speed of the package at that time, so as to accurately calculate the transverse offset. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application, illustrate embodiments of the application and assist in

[0024] Figure 1 is a schematic view of the horizontal reference and the inclined detection line of the package according to the first embodiment of the application;

[0025] Figure 2 is a schematic view of the calculation principle of the distance between the horizontal reference and the inclined detection line; Figure 1

[0026] Figures 3a to 3l is a schematic view of the horizontal reference and the inclined detection line of the package according to other embodiments of the application. DETAILED DESCRIPTION

[0027] In order to make the objects, technical solutions and advantages of the application clearer, the embodiments of the application will be further described in detail below with reference to the drawings.

[0028] As shown in Figure 1 The application provides a package, which is provided with a horizontal reference 10 parallel to the width direction of the package and at least one inclined detection line 20 forming a preset angle a with the horizontal reference 10. In the application, the horizontal reference 10 and the inclined detection line 20 form a preset angle a, the electric eyes for detecting the package are fixedly arranged on the filling machine, when the package transversely offsets, the distance between the horizontal reference 10 and the inclined detection line 20 at the corresponding position of the electric eyes changes, since the package moves at a constant speed, the distance change can be reflected by detecting the time of the horizontal reference 10 to the inclined detection line 20 by the detection device, so as to accurately calculate the transverse offset.

[0029] ​In this invention, the horizontal reference 10 can be a horizontal reference line parallel to the width direction of the packaging material, or other horizontal references 10 can be used, as long as they enable the photoelectric sensor to detect the horizontal reference 10 and generate a corresponding horizontal reference signal. For example... Figure 1 As shown, in a preferred embodiment of the present invention, the horizontal reference 10 is a longitudinal offset detection barcode on the packaging material. This utilizes the existing longitudinal offset detection barcode on the packaging material, eliminating the need for a separate horizontal reference line or other horizontal reference 10. This saves on manufacturing processes and the surface area of ​​the packaging material, facilitating the printing of other promotional designs by the manufacturer. Furthermore, in existing technologies, the first and second photocells detecting the longitudinal offset detection barcode generate a decoding signal after each barcode detection. This decoding signal serves as the horizontal reference signal, possessing precise uniqueness and offering higher reliability compared to methods such as setting additional horizontal reference lines. In other words, in this embodiment, by adding a tilt detection line to the existing longitudinal offset detection barcode, the high-precision horizontal offset of the packaging material can be calculated using existing hardware through programming, providing input data for the packaging material correction system.

[0030] like Figure 1 As shown, velocity V represents the direction of movement of the packaging material on the filling machine. Figure 1 In the process, along the direction of movement of the packaging material, the tilt detection line 20 is located behind the longitudinal offset detection barcode. That is, the two photocells first detect the longitudinal offset detection barcode, obtain the decoded signal as the horizontal reference signal, and use it as the timing start point. Then, they detect the tilt detection line 20 and obtain the time interval t1. After passing the tilt detection line 20 (that is, after detecting the tilt detection line 20), the time interval t2 is obtained. Based on the time intervals t1 and t2 and the corresponding known quantities, the lateral offset can be calculated.

[0031] Similarly, combined Figures 3a to 3l As shown, the tilt detection line 20 can also be located in front of the longitudinal offset detection barcode. It can also detect the time interval t1 corresponding to the distance between the horizontal reference 10 and the edge of the tilt detection line 20 close to the horizontal reference 10, and the time interval t2 corresponding to the distance between the horizontal reference 10 and the edge of the tilt detection line 20 away from the horizontal reference 10, and then calculate the lateral offset.

[0032] Preferably, to ensure that the photoelectric sensor can reliably detect the tilt detection line 20, the length of the tilt detection line 20 is selected to be greater than or equal to 4mm. Generally, the projected length of the tilt detection line 20 in the longitudinal offset detection barcode width direction is equal to the width of the longitudinal offset detection barcode. Figures 3a to 3l As shown, the tilt detection line 20 is not limited to a single tilted straight line; it can also take other forms, such as using two tilt detection lines 20 to form a V-shape, which can also achieve lateral offset detection.

[0033] In addition, in order to effectively distinguish the time intervals t1 and t2, the width of the tilt detection line 20 is generally selected to be greater than or equal to 1 mm. Moreover, the width of the tilt detection line 20 needs to be consistent along the length direction of the tilt detection line 20. In addition, in order to have sufficient sensitivity for the change of the time intervals t1 and t2 when the packaging material has lateral displacement, the preset angle a is selected to be 5° to 85°, and more preferably 30° to 60°.

[0034] In combination with Figure 1 and Figure 2 , the present application also provides a packaging material lateral displacement detection method, which comprises: detecting the horizontal reference 10 and the tilt detection line 20 of the moving packaging material at a fixed position, obtaining the time interval t1 corresponding to the distance between the horizontal reference 10 and the edge of the tilt detection line 20 close to the horizontal reference 10, and the time interval t2 corresponding to the distance between the horizontal reference 10 and the edge of the tilt detection line 20 away from the horizontal reference 10, and calculating the lateral displacement amount according to the time interval t1 and the time interval t2.

[0035] Specifically, in combination with Figure 1 and Figure 2 , the lateral displacement amount f1 is calculated by the following formula:

[0036]

[0037] wherein X1 is the width of the tilt detection line 20, a is the preset angle between the horizontal reference 10 and the tilt detection line 20, L1 is the lateral reference amount, and L1 is the distance between the intersection of the horizontal reference and the extension line of the tilt detection line and the lateral displacement reference line. The positive and negative of the displacement amount f1 can represent whether the lateral displacement is to the left or to the right of the lateral displacement reference line, that is, whether the displacement is towards or away from the intersection of the horizontal reference and the tilt detection line.

[0038] In combination with Figure 1 , the lateral displacement detection method of the present application is specifically described by taking the longitudinal displacement detection barcode as the horizontal reference 10. In Figure 1In the figure, the dotted line b1 is the first electric eye scanning path; the dotted line b2 is the second electric eye scanning path; the dotted line b3 is the horizontal displacement reference line; the dotted line b4 is the position corresponding to the decoding signal obtained by the longitudinal displacement detection bar code, i.e. the horizontal reference; the dotted line b5 is the parallel line passing through the intersection of the horizontal reference and the tilt detection line and parallel to the horizontal displacement reference line b3; a is the included angle between the tilt detection line 20 and the horizontal reference 10; t1 is the time from the start of the decoding signal to the start of the second electric eye entering the tilt detection line 20; t2 is the time from the start of the decoding signal to the start of the second electric eye leaving the tilt detection line 20; f1 is the lateral displacement amount of the packaging material, in the ideal case, the packaging material does not displace, the dotted line b3 coincides with the dotted line b2, and f1 is 0. X1 is the width of the tilt detection line 20, which is a known quantity; L1 is the horizontal reference amount, which is the distance between the intersection (dotted line b5) of the horizontal reference and the tilt detection line and the horizontal displacement reference line b3, and is a constant; L2 is the distance between the signal position point of the second electric eye entering the tilt detection line 20 and the dotted line b5, which is a variable; L3 is the distance moved by the packaging material in the t1 time; L4 is the distance moved by the packaging material in the t2-t1 time; v is the speed of the packaging material; the horizontal line 30 is the debugging line, at the position of the debugging line, the first electric eye and the second electric eye check the signal at the same time, thereby ensuring that the first electric eye and the second electric eye can obtain the decoding signal after detecting the longitudinal displacement detection bar code.

[0039] In combination Figure 1 and Figure 2 It can be seen that:

[0040] L3 = t1 x V (1)

[0041] L4 = (t2-t1) x V (2)

[0042] L4 = X1 / cos a (3)

[0043] L2 = L3 / tan a (4)

[0044] f1 = L1-L2 (5)

[0045] From equations (1) and (2), it can be seen that:

[0046] L3 = t1 x L4 / (t2-t1) (6)

[0047] From equation (6) in combination with equation (3), it can be seen that:

[0048] L3 = t1 x X1 / (t2-t1)cos a (7)

[0049] From equations (4) and (5), it can be seen that:

[0050] f1 = L1-L3 x cos a / sin a (8)

[0051] From formula (7) and (8), we can know that:

[0052]

[0053] It can be understood that, in other embodiments shown in the figure, as long as the time intervals t1 and t2 can be detected, the lateral offset amount can be calculated. For example, when the tilt detection line is located in the front of the longitudinal offset detection barcode in the movement direction of the packaging material, the time interval t2 is the time interval from detecting the tilt detection line to detecting the horizontal reference signal; the time interval t1 is the time interval from detecting the tilt detection line to detecting the horizontal reference signal, and the lateral offset amount f1 can also be calculated according to the above formula. Figures 3a to 3l In the above embodiments, when the tilt detection line is a plurality of curved lines, one of them can be selected as the tilt detection line according to the needs, and correspondingly, the intersection points of L1 and L2 with the horizontal reference can be adjusted according to the actual use.

[0054] Figures 3e to 3h In addition, it should be noted that in the embodiments in which the longitudinal offset detection barcode is used as the horizontal reference 10, the first electric eye and the second electric eye are set as the existing way to detect the decoding signal generated by the longitudinal offset detection barcode. In other embodiments, one electric eye can also achieve the detection of t1 and t2.

[0055] In addition, it should be noted that in the embodiments in which the longitudinal offset detection barcode is used as the horizontal reference 10, the first electric eye and the second electric eye are set as the existing way to detect the decoding signal generated by the longitudinal offset detection barcode. In other embodiments, one electric eye can also achieve the detection of t1 and t2.

[0056] The present application also provides a packaging material lateral offset detection device corresponding to the above-mentioned packaging material lateral offset detection method, which comprises: an electric eye fixedly arranged on the rack of the filling machine, used for detecting the horizontal reference 10 and the tilt detection line 20 of the moving packaging material; a controller connected with the electric eye, and used for acquiring the time interval t1 corresponding to the distance between the horizontal reference 10 and the edge of the tilt detection line 20 close to the horizontal reference 10, and the time interval t2 corresponding to the distance between the horizontal reference 10 and the edge of the tilt detection line 20 away from the horizontal reference 10; and calculating the lateral offset amount f1 by using the following formula:

[0057]

[0058] Wherein, X1 is the width of the tilt detection line 20, α is the preset included angle between the horizontal reference 10 and the tilt detection line 20, and L1 is the lateral reference amount. The specific calculation process is the same as the above-mentioned detection method, which will not be described here.

[0059] ​In the preferred embodiment of the present application, the horizontal reference 10 is a longitudinal offset detection bar code on the packaging material, the inclined detection line 20 is located at the rear of the longitudinal offset detection bar code along the movement direction of the packaging material; the electric eye comprises a first electric eye and a second electric eye; the controller further acquires a decoding signal of the longitudinal offset detection bar code according to the detection signals of the first electric eye and the second electric eye, and takes the time from the start of the acquisition of the decoding signal to the detection of the inclined detection line 20 as the time interval t1 and the time from the start of the acquisition of the decoding signal to the detection of the inclined detection line 20 as the time interval t2, that is, the high-precision horizontal offset of the packaging material can be calculated by programming using the existing hardware, and input data is provided for the packaging material correction system.

[0060] The present application also provides a filling machine comprising the packaging material transverse offset detection device described above, so that the transverse offset of the packaging material can be reliably detected, input data is provided for the packaging material correction system, and the transverse offset of the packaging material is effectively controlled within the control range.

[0061] The above is only a specific embodiment of the present application, and those skilled in the art can make other improvements or modifications on the basis of the above embodiment under the above teaching of the present application. Those skilled in the art should understand that the above specific description is only for better explanation of the purpose of the present application, and the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A packaging material for continuous feeding and longitudinal sealing and transverse sealing on a filling machine, characterized in that, The package material is provided with a horizontal reference parallel to the width direction of the package material and at least one inclined detection line at a preset angle with the horizontal reference; When the package material is laterally offset, the distance between the horizontal reference and the inclined detection line at the corresponding position of the electric eye detecting the package material changes, and the distance change is reflected by the time from the horizontal reference to the inclined detection line detected by the detection device; The length of the inclined detection line is greater than or equal to 4 mm, and the width is greater than or equal to 1 mm, and the width of the inclined detection line is consistent along the length direction of the inclined detection line; The lateral offset is calculated according to the time interval t1 and the time interval t2 by using the following formula: Wherein, X1 is the width of the inclined detection line, α is the preset angle between the horizontal reference and the inclined detection line, L1 is the lateral reference amount, and is the distance between the intersection of the horizontal reference and the inclined detection line and the lateral displacement reference line.

2. The package material according to claim 1, wherein The horizontal reference is a longitudinal offset detection barcode on the package material.

3. The package material according to claim 2, wherein The inclined detection line is located at the rear or front of the longitudinal offset detection barcode along the movement direction of the package material.

4. The package material according to any one of claims 1 to 3, wherein The preset angle is 5° to 85°.

5. The package material according to any one of claims 1 to 3, wherein The inclined detection line is two, and the two inclined detection lines are arranged in a V shape.

6. A method of detecting lateral offset of a package material, characterized by, The method comprises: Detecting the horizontal reference and the inclined detection line of the moving package material at a fixed position, obtaining the time interval t1 from detecting the horizontal reference signal to detecting the inclined detection line or detecting the inclined detection line to detecting the horizontal reference signal, and the time interval t2 from detecting the horizontal reference signal to detecting the inclined detection line or detecting the inclined detection line to detecting the horizontal reference signal, and calculating the lateral offset according to the time interval t1 and the time interval t2; The length of the inclined detection line is greater than or equal to 4 mm, and the width is greater than or equal to 1 mm, and the width of the inclined detection line is consistent along the length direction of the inclined detection line; The lateral offset is calculated according to the time interval t1 and the time interval t2 by using the following formula: Wherein, X1 is the width of the inclined detection line, α is the preset angle between the horizontal reference and the inclined detection line, L1 is the lateral reference amount, and is the distance between the intersection of the horizontal reference and the inclined detection line and the lateral displacement reference line.

7. The package material lateral offset detection method according to claim 6, wherein The horizontal reference is a longitudinal offset detection barcode on the package material, and the decoding signal of the longitudinal offset detection barcode detection is taken as the horizontal reference signal; Along the movement direction of the package material, the inclined detection line is located at the rear of the longitudinal offset detection barcode, the time interval t1 is the time interval from detecting the horizontal reference signal to detecting the inclined detection line, and the time interval t2 is the time interval from detecting the horizontal reference signal to detecting the inclined detection line; Or The tilt detection line is located in front of the longitudinal offset detection barcode in the movement direction of the packaging material, the time interval t2 is the time interval from detecting the tilt detection line to detecting the horizontal reference signal, and the time interval t1 is the time interval from detecting the tilt detection line to detecting the horizontal reference signal.

8. A packaging material lateral offset detection device, characterized in that, The device comprises: An electric eye fixedly arranged on the filling machine and used for detecting the horizontal reference and the tilt detection line of the moving packaging material; A controller connected with the electric eye and used for obtaining the time interval t1 corresponding to the distance between the horizontal reference and the edge of the tilt detection line close to the horizontal reference, and the time interval t2 corresponding to the distance between the horizontal reference and the edge of the tilt detection line away from the horizontal reference; the length of the tilt detection line is greater than or equal to 4 mm, and the width of the tilt detection line is greater than or equal to 1 mm; the width of the tilt detection line is consistent along the length direction of the tilt detection line; And the lateral offset f1 is calculated by using the following formula: Wherein, X1 is the width of the tilt detection line, a is the preset included angle between the horizontal reference and the tilt detection line, L1 is the lateral reference amount, and is the distance between the intersection of the horizontal reference and the tilt detection line and the lateral displacement reference line.

9. The packaging material lateral offset detection device according to claim 8, characterized in that, The electric eye comprises a first electric eye and a second electric eye; The controller further obtains the decoding signal of the longitudinal offset detection barcode detection completion as the horizontal reference signal according to the detection signals of the first electric eye and the second electric eye.

10. A filling machine characterized in that, The device comprises the packaging material lateral offset detection device according to claim 8.

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