TW202035961A - Sealing detection device of package bag - Google Patents

Abstract

The invention provides a sealing detection device for a packaging bag, which mainly comprises at least one sealing unit, a detection unit and a processor. The sealing unit is used to seal the open of the package bag to form a seal, and the detection unit is used to detect the seal of the package bag. The detection unit comprises a transmitting unit and a receiving unit, wherein the transmitting unit is configured to project an ultrasonic signal to the seal, wherein part of the ultrasonic signal penetrates the seal and forms an ultrasonic detecting signal. The detecting unit receives the ultrasonic detecting signal and transmits the ultrasonic detecting signal to the processor. The processor determines whether the open of the package bag is sealed or not according to the amplitude of the ultrasonic detecting signal, and can quickly and accurately complete the seal detection of the package bag.

Description

Sealing detection device of packaging bag

The invention relates to a sealing detection device for packaging bags, in particular to a detection device capable of detecting the sealing of opaque packaging bags.

Packaging refers to the protective layer and decoration on the outside of an object. Different objects have different packaging methods and materials. In the manufacturing process of electronic products, after completing a certain process step, it is often necessary to move the semi-finished electronic product to another production line or another factory, and proceed to the next stage of the process.

Taking the printed circuit board as an example, when the printed circuit board is moved to the next production line or factory, the printed circuit board is usually packaged first and then shipped to improve the yield of the product.

If the sealing of the packaging bag is not complete, it may cause the outside air to enter the packaging bag from the defective part of the sealing and contact the packaged object in the packaging bag, causing the packaged object to oxidize or corrode. Therefore, after the sealing of the packaging bag is completed, it is necessary to further check whether the sealing of the packaging bag is complete.

Generally, it is possible to observe the seal through the naked eye and initially judge whether the seal is complete, but the accuracy of this detection method is very low, especially when the packaging bag is made of opaque material. Another detection method is to coat the seal of the packaging bag with colored liquid. If the seal of the packaging bag is incomplete, liquid leakage will occur, so as to determine whether the seal of the packaging bag is complete. However, this detection method needs to wait for a period of time to determine whether the seal is complete, so there is a problem of poor detection efficiency.

An object of the present invention is to provide a sealing detection device for packaging bags, which mainly detects the sealing of packaging bags through ultrasonic waves, and is particularly suitable for detecting the sealing of opaque packaging bags, for example, it can be used to detect the sealing of aluminum foil bags. The sealing detection device of the present invention performs detection in a fully automatic manner, and can quickly and prepare the sealing detection of the packaging bag.

One objective of the present invention is to provide a sealing detection device for packaging bags, which includes a sealing unit and a detection unit arranged adjacently. When the sealing unit forms a seal on the packaging bag, it can immediately detect the seal through the adjacent detection unit.

One objective of the present invention is to provide a sealing detection device for packaging bags, wherein the driving unit is connected to and drives the detection unit to move along the bag mouth, and the processor is electrically connected to the detection unit and the driving unit. The processor can receive the displacement data of the detection unit by the drive unit, and receive the ultrasonic detection signal from the detection unit, so as to know the incomplete sealing area of the packaging bag.

In order to achieve the above objective, the present invention provides a sealing detection device for packaging bags, which includes: at least a sealing unit for forming a sealing opening on the packaging bag; a detection unit adjacent to the sealing unit and including: a launching unit, Used to send out an ultrasonic signal, wherein the ultrasonic signal is projected on the seal of the packaging bag and penetrates the seal or is reflected by the seal to generate an ultrasonic detection signal; a receiving unit for receiving the ultrasonic detection signal; and The processor is electrically connected to the receiving unit, and the receiving unit receives the ultrasonic detection signal, and judges whether the sealing of the packaging bag is complete according to the ultrasonic detection signal.

In the sealing detection device, the processor determines whether the sealing of the packaging bag is complete according to the amplitude or intensity of the ultrasonic detection signal.

In the sealing detection device, the processor compares the amplitude of the ultrasonic detection signal with an amplitude threshold value. When the amplitude of the ultrasonic detection signal is greater than the amplitude threshold value, it is determined that the sealing is complete. If the amplitude of the ultrasonic detection signal is less than the amplitude threshold Value, the seal is judged to be incomplete.

The sealing detection device includes a driving unit connected to the detection unit, and drives the detection unit to move along the sealing of the packaging bag.

In the sealing detection device, the processor is electrically connected to the driving unit, the driving unit receives a driving displacement signal, and the displacement or position of the detecting unit is known from the driving displacement signal, so that the processor detects the signal and drives the displacement by ultrasonic waves The signal knows the area where the sealing of the bag is not complete.

In the sealing detection device, the transmitting unit and the receiving unit are respectively located on different surfaces of the sealing of the packaging bag, and the receiving unit receives the ultrasonic detection signal penetrating the sealing.

In the sealing detection device, the transmitting unit and the receiving unit are respectively located on the same surface of the sealing of the packaging bag, and the receiving unit receives the ultrasonic detection signal reflected or scattered by the sealing.

The sealing detection device includes a carrying unit for carrying the packaging bag, and driving the sealing of the carried packaging bag to move between the sealing unit and the detection unit.

In the sealing detection device, at least one suction hole is provided on the surface of the carrying unit to form a negative pressure and suction the packaging bag.

Please refer to FIG. 1, which is a perspective view of an embodiment of a sealing detection device for a packaging bag of the present invention. As shown in the figure, the sealing detection device 10 of the packaging bag according to the embodiment of the present invention is mainly used for sealing and detecting a packaging bag 12, and is particularly suitable for detecting the sealing of a packaging bag 12 that does not transmit light, such as an aluminum foil bag, and includes A sealing unit 11, a detecting unit 13, a driving unit 15 and a processor 17.

The sealing unit 11 includes an upper sealing unit 111 and a lower sealing unit 113. The upper sealing unit 111 faces the lower sealing unit 113 and is used to form a seal 121 between the packaging bag 12 therebetween. Specifically, the upper sealing unit 111 can be connected to a driving unit 115, for example, the driving unit 115 can be a pneumatic cylinder, and the upper sealing unit 111 is driven away from or close to the lower sealing unit 113 through the driving unit 115. The upper sealing unit 111 and the lower sealing unit 113 can pressurize and heat the packaging bag 12 therebetween, and form a seal 121 on the packaging bag 12.

The detecting unit 13 includes a transmitting unit 131 and a receiving unit 133. The transmitting unit 131 is used for generating ultrasonic signals, and the receiving unit 133 is used for receiving ultrasonic signals. In the embodiment of the present invention, the transmitting unit 131 and the receiving unit 133 are respectively located on different surfaces of the sealing 121 of the packaging bag 12, wherein the transmitting unit 131 faces the receiving unit 133 and is used to detect the sealing 121 of the packaging bag 12 between the two .

In an embodiment of the present invention, as shown in FIG. 2 and FIG. 3, the transmitting unit 131 is located above the packaging bag 12, and projects an ultrasonic signal 141 generated to the seal 121 of the packaging bag 12. The signal 141 penetrates the seal 121 of the packaging bag 12. Specifically, the ultrasonic signal 141 will have energy attenuation during the process of penetrating the seal 121 of the packaging bag 12, so that the amplitude of the ultrasonic signal 141 is reduced. The ultrasonic signal 141 penetrating the seal 121 of the packaging bag 12 can be Defined as an ultrasonic detection signal 143.

The receiving unit 133 is located under the packaging bag 12, receives the ultrasonic detection signal 143 that penetrates the seal 121 of the packaging bag 12, and determines whether the seal 121 of the packaging bag 12 is complete through the ultrasonic detection signal 143. In the embodiment of the present invention, the transmitting unit 131 and the receiving unit 133 are respectively located above and below the packaging bag 12, but in practical applications, the transmitting unit 131 and the receiving unit 133 can also be located below and above the packaging bag 12, respectively.

Specifically, the principle of the sealing unit 11 forming the seal 121 on the packaging bag 12 is to pressurize and heat the bag bodies on both sides of the packaging bag 12 to make the bag bodies on both sides closely fit. If the bag bodies on both sides of the packaging bag 12 are not tightly attached, there will be gaps between the bag bodies on both sides of the seal 121, and the structure of the seal 121 on the packaging bag 12 may be incomplete, making the packaging bag 12 unable to form A confined space. For example, when the structure of the seal 121 is incomplete, the packaging bag 12 will not be able to form a vacuum package.

When the ultrasonic signal 141 penetrates the seal 121 of the packaging bag 12, it will be attenuated to different degrees due to different materials. Specifically, when the ultrasonic signal 141 penetrates the complete and incomplete seal 121, the gap and/or air in the seal 121 will cause the ultrasonic signal 141 to have different degrees of attenuation, and form different intensities and/or The amplitude of the ultrasonic detection signal 143.

In the embodiment of the present invention, the strength and/or amplitude of the ultrasonic detection signal 143 received by the receiving unit 133 can be used to determine whether the seal 121 on the packaging bag 12 is complete, so as to complete the detection of the seal 121 of the packaging bag 12. Specifically, when the structure of the seal 121 is incomplete and there is a gap, the ultrasonic signal 141 will have a relatively large attenuation during the process of penetrating the seal 121.

In practical applications, the receiving unit 133 can be electrically connected to a processor 17, such as a computer, a microprocessor (CPU), etc., where the processor 17 can receive the ultrasonic detection signal 143 by the receiving unit 133, and can be based on the ultrasonic detection signal 143 It is determined whether the seal 121 of the packaging bag 12 is complete, for example, based on the amplitude or intensity of the ultrasonic detection signal 143.

Specifically, the processor 17 can store or set an amplitude threshold, and compare the amplitude of the ultrasonic detection signal 143 with the amplitude threshold. In an embodiment of the present invention, when the amplitude of the ultrasonic detection signal 143 is greater than the amplitude threshold, the processor 17 will determine that the seal 121 of the packaging bag 12 is complete. Conversely, when the amplitude of the ultrasonic detection signal 143 is less than the amplitude threshold 143, the processor 17 will determine that the seal 121 of the packaging bag 12 is incomplete.

Since the ultrasonic signal can penetrate opaque materials, the sealing detection device 10 of the present invention is also suitable for detecting the sealing 121 of the opaque packaging bag 12. Generally speaking, when the packaging bag 12 is an aluminum foil bag, the operator will not be able to visually judge whether the seal 121 of the aluminum foil bag is complete. In contrast, the sealing detection device 10 of the present invention can still detect the sealing 121 of the aluminum foil bag through transmitting and receiving ultrasonic signals.

In addition, the seal 121 of the general packaging bag 12 is usually a long strip, and the detection unit 13 may not completely cover the entire seal 121. To this end, the detection unit 13 can be connected to a drive unit 15. For example, the drive unit 15 can be a pneumatic cylinder or a stepping motor, and the drive unit 15 drives the detection unit 13 to move along the seal 121 to detect the seal 121 of the packaging bag 12. , As shown in Figure 1 and Figure 3. Of course, if the detection unit 13 can completely cover the entire sealing opening 121, the driving unit 15 may not be required.

In an embodiment of the present invention, the processor 17 may also be electrically connected to the driving unit 15, and the driving unit 15 receives a driving displacement signal, and knows the position of the detecting unit 13 according to the driving displacement signal. Specifically, when the driving unit 15 is a pneumatic cylinder, the driving displacement signal may be the extended length of the pneumatic cylinder. The pneumatic cylinder is connected to the detection unit 13 and drives the detection unit 13, so the extension length of the pneumatic cylinder is related to the displacement and position of the detection unit 13. In this way, the processor 17 can learn the displacement and/or position of the detection unit 13 and the area of the seal 121 detected by the detection unit 13 through the driving displacement signal.

It can be seen from the above content that the processor 17 can receive the ultrasonic detection signal 143 from the detection unit 13 and know whether the detected seal 143 is complete. In addition, the processor 17 can also receive the driving displacement signal from the driving unit 15 and know the area of the seal 121 detected by the detection unit 13. The processor 17 can further combine the ultrasonic detection signal 143 and the driving displacement signal to know the incomplete area of the sealing 121 of the packaging bag 12.

In an embodiment of the present invention, the sealing unit 11 is adjacent to the detection unit 13, and after the sealing unit 11 forms a seal 121 on the packaging bag 12, the detection unit 13 immediately detects the seal 121 of the packaging bag 12.

The sealing detection device 10 may also include a carrying unit 19, wherein the carrying unit 19 is used to carry the packaging bag 12 and drive the packaging bag 12 to move. Specifically, the carrying unit 19 may be a plate body, and the surface of the plate body is provided with at least one suction hole 191, wherein the suction hole 191 may be connected to a pump and suck the packaging bag 12 on the carrying unit 19 with the generated negative pressure.

In addition, the bearing unit 19 can also be connected to a sliding rail and a driving unit (not shown), and drive the bearing unit 19 and the packaging bag 12 to move between the sealing unit 11 and the detection unit 13. Specifically, the carrying unit 19 can drive the packaging bag 12 to move to the sealing unit 11, and the sealing unit 11 forms a seal 121 on the packaging bag 12. The carrying unit 19 can then drive the packaging bag 12 to leave the sealing unit 11, displace the seal 121 of the packaging bag 12 to the detection unit 13 or the detection path of the detection unit 13, and use the detection unit 13 to detect whether the seal 121 of the packaging bag 12 is complete.

Please refer to FIG. 4, which is a three-dimensional schematic diagram of another embodiment of a sealing detection device for a packaging bag of the present invention. As shown in the figure, the sealing detection device 20 of the packaging bag according to the embodiment of the present invention is mainly used for sealing and detecting a packaging bag 12, and includes a sealing unit 11, a detection unit 23, a driving unit 15 and a processing unit.器17.

The sealing detection device 20 of the embodiment of the present invention has a similar structure to that of FIG. 1, and the main difference is that the detection unit 23 of the sealing detection device 20 of the embodiment of the present invention is located on the same surface of the packaging bag 12.

4 and 5, the detection unit 23 includes a transmitting unit 231 and a receiving unit 233, wherein the transmitting unit 231 and the receiving unit 233 are located on the same surface of the packaging bag 12, for example, located on the upper or lower surface of the packaging bag 12. surface. In contrast, the transmitting unit 131 and the receiving unit 133 of FIG. 1 are respectively located on different surfaces of the packaging bag 12.

The transmitting unit 231 is used to generate an ultrasonic signal 241 and project the ultrasonic signal 241 to the seal 121 of the packaging bag 12. Part of the ultrasonic signal 241 will penetrate the sealing of the packaging bag 12, and part of the ultrasonic signal 241 will be reflected or scattered by the sealing 121 of the packaging bag 12. Among them, the ultrasonic signal is reflected or scattered by the sealing 121 of the packaging bag 12. It can be defined as the ultrasonic detection signal 243, and the detection unit 233 is used to receive the ultrasonic detection signal 243 reflected or scattered by the seal 121.

During the process of being reflected by the sealing 121 of the packaging bag 12, the ultrasonic signal 241 will have different attenuation due to different materials and/or structures. In this way, the processor 17 can determine whether the seal 121 of the packaging bag 12 is complete from the ultrasonic detection signal 243 received by the detection unit 233. Specifically, the processor 17 can determine whether the seal 12 of the packaging bag 12 is complete by detecting the amplitude, receiving angle, and/or receiving time of the signal 243 by ultrasonic waves.

The above is only a preferred embodiment of the present invention, and is not used to limit the scope of implementation of the present invention. That is to say, all the shapes, structures, features and spirits described in the scope of the patent application of the present invention have equal changes and All modifications shall be included in the scope of the patent application of the present invention.

10: Sealing detection device 11: Sealing unit 111: Upper sealing unit 113: Lower sealing unit 115: drive unit 12: Packing bag 121: Seal 13: Detection unit 131: Launch unit 133: receiving unit 141: Ultrasonic signal 143: Ultrasonic detection signal 15: drive unit 17: processor 19: Carrying unit 191: adsorption hole 20: Sealing detection device 23: Detection unit 231: launch unit 233: receiving unit

Fig. 1 is a three-dimensional schematic diagram of an embodiment of a sealing detection device for a packaging bag of the present invention.

Fig. 2 is a block diagram of an embodiment of the detection unit of the sealing detection device of the packaging bag of the present invention.

Figure 3 is a three-dimensional schematic diagram of an embodiment of a sealing detection device for a packaging bag of the present invention.

Fig. 4 is a three-dimensional schematic diagram of another embodiment of the sealing detection device of the packaging bag of the present invention.

Fig. 5 is a schematic block diagram of another embodiment of the detection unit of the sealing detection device of the packaging bag of the present invention.

10: Sealing detection device

11: Sealing unit

111: Upper sealing unit

113: Lower sealing unit

115: drive unit

12: Packing bag

121: Seal

13: Detection unit

131: Launch unit

133: receiving unit

15: drive unit

17: processor

19: Carrying unit

191: adsorption hole

Claims (9)

A sealing detection device for packaging bags, including: At least a sealing unit for forming a sealing on the packaging bag; A detection unit, adjacent to the sealing unit, and including: A transmitting unit for emitting an ultrasonic signal, wherein the ultrasonic signal is projected on the seal of the packaging bag, penetrates the seal or is reflected by the seal, and generates an ultrasonic detection signal; A receiving unit for receiving the ultrasonic detection signal; and A processor is electrically connected to the receiving unit, and the receiving unit receives the ultrasonic detection signal, and determines whether the sealing of the packaging bag is complete according to the ultrasonic detection signal. According to the sealing detection device described in item 1 of the scope of patent application, the processor determines whether the sealing of the packaging bag is complete according to the amplitude or intensity of the ultrasonic detection signal. For example, the sealing detection device described in item 2 of the scope of patent application, wherein the processor compares the amplitude of the ultrasonic detection signal with an amplitude threshold value, and when the amplitude of the ultrasonic detection signal is greater than the amplitude threshold value, the sealing is determined Complete. If the amplitude of the ultrasonic detection signal is less than the amplitude threshold, it is determined that the seal is incomplete. The sealing detection device described in item 1 of the scope of patent application includes a driving unit connected to the detection unit and drives the detection unit to move along the sealing of the packaging bag For example, the sealing detection device described in claim 4, wherein the processor is electrically connected to the driving unit, the driving unit receives a driving displacement signal, and the displacement or position of the detection unit is known from the driving displacement signal , So that the processor knows the incomplete sealing area of the packaging bag from the ultrasonic detection signal and the driving displacement signal. For the sealing detection device described in item 1 of the scope of patent application, the transmitting unit and the receiving unit are respectively located on different surfaces of the sealing of the packaging bag, and the receiving unit receives the ultrasonic detection signal penetrating the sealing. As for the sealing detection device described in item 1 of the scope of patent application, the transmitting unit and the receiving unit are respectively located on the same surface of the sealing of the packaging bag, and the receiving unit receives the ultrasonic detection reflected or scattered by the sealing Signal. As described in the first item of the scope of patent application, the sealing detection device includes a carrying unit for carrying the packaging bag, and driving the sealing of the carried packaging bag to shift between the sealing unit and the detection unit. According to the sealing detection device described in item 1 of the scope of the patent application, at least one suction hole is provided on the surface of the carrying unit to form a negative pressure and adsorb the packaging bag.

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