Packaging printing sheet locating method

A positioning method and technology for packaging sheets, which are applied in the directions of packaging material feeding devices, packaging, transportation packaging, etc., can solve the problems of misalignment between the packaging shape and the pattern of the plastic sheet, and the cumulative error between the pattern of the plastic sheet and the packaging shape is large. , to improve the appearance quality and ensure the effect of accurate positioning

Inactive Publication Date: 2019-09-17
湖北周黑鸭食品工业园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the limitations of pattern printing accuracy in the above-mentioned background technology. In the process of continuous processing and molding of plastic sheets, the cumulative error between the patte

Method used

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  • Packaging printing sheet locating method
  • Packaging printing sheet locating method
  • Packaging printing sheet locating method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0029] Example 1

[0030] see figure 1 , figure 2 and Figure 4 As shown, an embodiment of the present invention provides a printing sheet positioning method for packaging, comprising the following steps:

[0031] Step 1. Match the packaging sheet 2 with the printed pattern to the packaging device 1, and the packaging device 1 pulls the packaging sheet 2 to move in the direction A according to the preset stroke length; the preset stroke length is set according to the specific packaging product, The length is a fixed value.

[0032] Step 2. During the movement of the packaging sheet 2 in the direction A, the sensor 3 detects the mark 21 on the packaging sheet 2 and then performs displacement measurement; the sensor 3 detects the mark 21 on the packaging sheet 2 and starts timing. , the packaging sheet 2 stops moving in the A direction and then stops the timing, and calculates the distance that the packaging sheet 2 moves after the sensor 3 detects the mark 21 according to ...

Example Embodiment

[0040] Example 2

[0041] see figure 1 , image 3 and Figure 4 As shown, an embodiment of the present invention provides a printing sheet positioning method for packaging, comprising the following steps:

[0042] Step 1. Match the packaging sheet 2 with the printed pattern to the packaging device 1, and the packaging device 1 pulls the packaging sheet 2 to move in the direction A according to the preset stroke length; the preset stroke length is set according to the specific packaging product, The length is a fixed value.

[0043] Step 2. During the movement of the packaging sheet 2 in the direction A, the sensor 3 detects the mark 21 on the packaging sheet 2 and then performs displacement measurement; the sensor 3 detects the mark 21 on the packaging sheet 2 and starts timing. , the packaging sheet 2 stops moving in the A direction and then stops the timing, and calculates the distance that the packaging sheet 2 moves after the sensor 3 detects the mark 21 according to the...

Example Embodiment

[0049] Example 3

[0050] see Figure 4 As shown, the difference between this embodiment and Embodiment 1 and Embodiment 2 is:

[0051] The sensor 3 is a color mark sensor, and the mark 21 is a boundary position arranged between two longitudinally adjacent printing patterns of the packaging sheet 2. When the color mark sensor detects the mark 21 of this section of the packaging sheet 2, the color mark sensor The timer starts after receiving the reflected signal of the marker 21 . If there are N marks 21 in the segment of the packaging sheet 2, N is a positive integer greater than 1, the N marks 21 are evenly distributed along the longitudinal direction of the packaging sheet 2, and the printed pattern is between two adjacent marks 21 , when the color mark sensor detects the Nth mark 21 of the segment of the packaging sheet 2 , the color mark sensor starts timing after receiving the reflection signal of the Nth mark 21 .

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Abstract

The invention discloses a packaging printing sheet locating method, and belongs to the technical field of packaging. The locating method comprises the following steps that a packaging sheet of a printing pattern is coordinated with packaging equipment, and the packaging sheet is pulled to move forwards through the packaging equipment according to a preset stroke length; in the process that the packaging sheet is moved forwards, displacement measurement is performed after a marking on the packaging sheet is detected through a sensor, and the distance that the packaging sheet is moved after the marking is detected through the sensor is measured; whether the distance exceeds the set distance is judged, and the packaging sheet is pulled through the packaging equipment for the set length if yes; the next step is performed if not; and plastic sucking molding and/or hot press sealing is performed for the packaging sheet through a mould of the packaging equipment. According to the method, the error between the pattern of the packaging sheet and the packaging appearance can be measured accurately, and the packaging sheet is stretched and calibrated after the error exceeds the set distance; it is ensured that the pattern of the packaging sheet and the packaging appearance are located accurately; and the appearance quality of a packaging product is improved.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a printing sheet positioning method for packaging. Background technique [0002] Plastic sheets can be thermoformed into products. Thermoformed products are widely used in packaging, decoration and other fields. In order to meet the functions of publicity, identification and aesthetics of commodity packaging, it is necessary to print patterns, text and other content on the packaging. The existing The printing process on plastic sheets usually adopts the method of printing first and then forming. Due to the limitation of pattern printing accuracy, in the process of continuous processing of plastic sheets or heat sealing, the cumulative error between the pattern of the plastic sheet and the package shape is getting bigger and bigger, which eventually leads to the difference between the package shape and the plastic sheet. The problem of misalignment of the pattern of the pa...

Claims

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Application Information

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IPC IPC(8): B65B57/04B65B41/16
CPCB65B41/16B65B57/04
Inventor 周富裕程容然周徐
Owner 湖北周黑鸭食品工业园有限公司
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