Transparent packaging bag jet printing equipment

Abstract

The utility model discloses transparent packaging bag jet printing equipment in the field of packaging equipment, which comprises two conveying belts, a photoelectric sensing device and a jet printing structure, the photoelectric sensing device is respectively and electrically connected with the jet printing structure and the conveying belts, the conveying directions of the two conveying belts are the same, and the photoelectric sensing device is electrically connected with the jet printing structure and the conveying belts. A sensing gap is formed between the two conveying belts, the sensing end of the photoelectric sensing device is located above the sensing gap, and the background color of a sensing area of the photoelectric sensing device is not changed all the time by arranging the sensing gap between the two conveying belts. And the photoelectric sensing equipment can sensitively sense the position of the transparent packaging bag, so that the probability of wrong spraying and missing spraying of the packaging bag is reduced.

Description

Technical Field

[0001] This utility model relates to the field of packaging equipment, and in particular to a transparent packaging bag printing device. Background Technology

[0002] In food processing, it is generally necessary to inkjet print codes on food packaging bags, usually to indicate production dates and batch numbers. Existing inkjet printing equipment typically uses photoelectric sensors installed along the conveyor belt path. These sensors detect the position of the packaging bags on the conveyor belt to achieve precise printing on each bag. For example, application document CN202400334U discloses a photoelectric sensor-based automatic inkjet printer for a filling and sewing production line. When the bag travels on the conveyor belt between the light generator and the photosensitive sensor, the light signal from the light generator is blocked, controlling the printing station to achieve printing.

[0003] However, when printing on some transparent packaging bags, the different colors of the conveyor belt may cause deviations in the photoelectric sensing process, which may lead to misprinting or missed printing, resulting in inaccurate printing and affecting the food production process. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to improve the problem of misprinting or missing printing when printing transparent packaging bags in the existing technology.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A transparent packaging bag printing equipment includes a conveyor belt, a photoelectric sensing device, and a printing structure. The photoelectric sensing device is electrically connected to the printing structure and the conveyor belt. There are two conveyor belts, and the two conveyor belts are in the same conveying direction. A sensing gap is provided between the two conveyor belts, and the sensing end of the photoelectric sensing device is located above the sensing gap.

[0007] Furthermore, the centerlines of the two conveyor belts along the conveying direction are aligned on the same straight line.

[0008] Furthermore, the width of the sensing gap is adapted to the outer diameter of the probe of the photoelectric sensing device.

[0009] Furthermore, the width of the sensing gap is 1cm-3cm.

[0010] Furthermore, a background plate of a single preset color is provided below the sensing gap.

[0011] Furthermore, it also includes a servo motor, the output end of which is connected to a synchronous transmission mechanism, and the two transmission ends of the synchronous transmission mechanism are respectively connected to the drive shafts of the two conveyor belts.

[0012] Furthermore, the upper surfaces of the two conveyor belts are flush.

[0013] The beneficial effects of this utility model are:

[0014] By setting a sensing gap between the two conveyor belts, the background color of the sensing area of ​​the photoelectric sensor remains unchanged. When a transparent packaging bag passes by, the photoelectric sensor can sensitively detect the position of the transparent packaging bag, thereby reducing the chance of accidental spraying and leakage of the packaging bag. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] The diagram is labeled as follows: 1-conveyor belt, 2-photoelectric sensor, 3-sensing gap, 4-printing structure, 5-background plate, 6-servo motor, 7-synchronous transmission structure. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] according to Figure 1 As shown in the figure, this application embodiment proposes a transparent packaging bag printing equipment, including a conveyor belt 1, a photoelectric sensing device 2 and a printing structure 4. The photoelectric sensing device 2 is electrically connected to the printing structure 4 and the conveyor belt 1 respectively. There are two conveyor belts 1, and the two conveyor belts 1 have the same conveying direction. A sensing gap 3 is provided between the two conveyor belts 1, and the sensing end of the photoelectric sensing device 2 is located above the sensing gap 3.

[0019] First, it should be stated that by setting the sensing gap 3 between the two conveyor belts 1, the background color of the sensing area of ​​the photoelectric sensing device 2 remains unchanged. When the transparent packaging bag passes through, the photoelectric sensing device can sensitively detect the position of the transparent packaging bag, thereby reducing the probability of accidental spraying and leakage of the packaging bag.

[0020] During operation, transparent packaging bags are spaced apart on the upper surface of conveyor belt 1. When any transparent packaging bag passes through the conveyor gap, the photoelectric sensor 2 located above the conveyor gap detects the transparent packaging bag and sends an electrical signal to the control system to control the conveyor belt 1 to stop and control the printing structure 4 to perform printing operation on the transparent packaging bag. During this process, the transparent packaging bag can move under the friction of the surface of the conveyor belt 1 and can stably pass through the sensing gap 3.

[0021] It is worth noting that the center lines of the two conveyor belts 1 along the conveying direction are on the same straight line. This ensures that the two conveyor belts 1 are connected end to end and the two sides are flush, thus preventing the packaging bag from falling or shifting when passing through the sensing gap 3.

[0022] In one embodiment, the width of the sensing gap 3 is adapted to the outer diameter of the probe of the photoelectric sensing device 2, so as to ensure that the sensing range of the photoelectric sensing device is within the sensing gap 3. In another embodiment, the width of the sensing gap 3 is 1cm-3cm, generally set to 2cm. Such a spacing setting can generally ensure the stability of photoelectric sensing and ensure that the packaging bag can pass through stably.

[0023] To further improve the stability and accuracy of photoelectric sensing, a background plate 5 of a single preset color is provided below the sensing gap 3 to prevent the background below the sensing gap 3 from changing and affecting the printing activity when the entire device is moved to different positions.

[0024] Specifically, the output end of the servo motor 6 is connected to a synchronous transmission mechanism. The two transmission ends of the synchronous transmission mechanism are respectively connected to the drive shafts of the two conveyor belts 1. This synchronous transmission structure 7 ensures that the two conveyor belts 1 can work synchronously, ensuring that the conveying speed on both sides is the same when the packaging bag passes through the sensing gap 3, so that the packaging bag passes through the sensing gap 3 stably. Moreover, in order to further improve the stability of the packaging bag passing through the sensing gap 3, the upper surfaces of the two conveyor belts 1 are flush.

[0025] In summary, this application proposes a transparent packaging bag printing device, including a conveyor belt 1, a photoelectric sensing device 2, and a printing structure 4. The photoelectric sensing device 2 is electrically connected to the printing structure 4 and the conveyor belt 1. The device is characterized by having two conveyor belts 1, with the two conveyor belts 1 having the same conveying direction, and a sensing gap 3 between the two conveyor belts 1. The sensing end of the photoelectric sensing device 2 is located above the sensing gap 3. By setting two conveyor belts 1, the photoelectric sensing accuracy is improved through the sensing gap 3, thereby improving the accuracy and stability of transparent packaging bag printing. Furthermore, the entire device has a simple structure, low cost, and requires no additional installation or processing operations, resulting in good economic benefits.

Claims

1. A transparent packaging bag printing equipment, comprising a conveying belt (1), a photoelectric sensing device (2) and a printing structure (4), the photoelectric sensing device (2) is respectively electrically connected to the printing structure (4) and the conveying belt (1), characterized in that: There are two conveyor belts (1), and the two conveyor belts (1) have the same conveying direction. A sensing gap (3) is provided between the two conveyor belts (1), and the sensing end of the photoelectric sensing device (2) is located above the sensing gap (3). ​ 2. The transparent package bag printing apparatus according to claim 1, characterized by: The centerlines of the two conveyor belts (1) are on the same straight line along the conveying direction.

3. The transparent packaging bag printing equipment according to claim 1, characterized in that: The width of the sensing gap (3) is adapted to the outer diameter of the probe of the photoelectric sensing device (2).

4. The transparent package bag printing apparatus according to claim 1, characterized by: The width of the sensing gap (3) is 1cm-3cm.

5. The transparent package bag printing apparatus according to claim 1, characterized by: A background plate (5) of a single preset color is provided below the sensing gap (3).

6. The transparent package bag printing apparatus according to claim 1, characterized by: It also includes a servo motor (6), the output end of which is connected to a synchronous transmission mechanism, and the two transmission ends of the synchronous transmission mechanism are respectively connected to the drive shafts of the two conveyor belts (1).

7. The transparent package bag printing apparatus according to claim 1, characterized by: The upper surfaces of the two conveyor belts (1) are flush.

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