Patent ID: 12252288

DETAILED DESCRIPTION OF ILLUSTRATED EMBODIMENTS

The embodiments of the disclosure will be further explained below in detail with reference to drawings and embodiments. The embodiments are illustrative and are not intended to limit the scope of the invention.

It should be noted that the terms such as “front” and “rear” used in the description are only used to distinguish one element from another and are not intended to limit the scope. For example, “front” element may refer to “rear” element, and “rear” element may refer to “front” element, without departing from the scope of the disclosure. In the description, “front” side refers to the side of the vacuum package which faces the operating personnel.

Referring to the sole FIGURE, the disclosure provides a smart heat sealing method for vacuum packaging, comprising steps of:S1. Recording the time interval Δt between two adjacent starts of the heating device which is continuously started a number of times;S2. Recording the number k of starts of the heating device;S3. Obtaining the first heating coefficient p1based on Δt;S4. Obtaining the second heating coefficient p2based on k;S5. Selecting the heating constant t depending on specified parameters and performance of the vacuum package machine; andS6. Based on p1, p2, and t, calculating a heating time T of the heating device for next operation by a formula T=p1*p2*t.

Based on the above description, the smart heat sealing method for vacuum packaging of the disclosure can obtain the forthcoming heating time T of the heating device based on the time interval Δt between two starts of the heating device and the number k of starts of the heating device, and can achieve the real time and dynamic control of the heating time of the heating device.

In particular, the heating time T of the heating device of the disclosure can be calculated by the formula T=p1*p2*t, wherein p1indicates the first heating coefficient obtained from the preset database based on Δt; p2indicates the second heating coefficient obtained from the preset database based on k; and t indicates the time constant selected depending on specified parameters and performance of the vacuum package machine. The first heating coefficient p1and the time interval Δt may have relationships as follows.

If⁢0<Δ⁢t<t1,0<p1<1;If⁢t1≤Δ⁢t<t2,p1=1;If⁢Δ⁢t>t2,p1>1;

Herein, t1and t2are preset values. In the embodiment of the disclosure, t1may be 25 s, and t2may be 600 s.

It can be seen that, if the number k of starts is fixed (i.e., p2is kept in a corresponding interval and the value of p1is critical for the heating time T of the heating device), the shorter the interval between two starts of the heating device, the less the heat dissipation time of the heating device. In such a case, the heating device has heat energy remained from previous heating. Consequently, in order to prevent the vacuum package from being overheated by the heating device operated too long, the heating time of the heating device should be reduced appropriately when the time interval between two starts of the heating device is relatively short (0<Δt<t1). That is, 0<the first heating coefficient p1<1, and thus the heating time of the heating device can be reduced. When the time interval between two starts of the heating device tends to be normal (t1≤Δt<t2), the heating time should be kept relatively stable. In such a case, the first heating coefficient p1=1. When the time interval between two starts of the heating device is too long (Δt>t2), the heating device, which has enough time to complete heat dissipation in the long interval, has relatively low temperature. In such a case, the heating time of the heating wire should be increased to some extent, to ensure the effect of heating vacuum package.

In particular, in some embodiments of the disclosure, p1may be preferably 0.6 or 0.8 when 0<Δt<25 s, and preferably 1.2 when Δt>600 s.

Furthermore, the second heating coefficient p2and the number k of starts may have relationships as follows.

If⁢k=1,p2>1;If⁢1<k≤K,p2=1;If⁢k>K,0<p2<1;

Herein, K indicates a critical value of the number of times of starts of the heating device.

It is apparent that, if the time interval Δt between two heating operations of the heating device is kept in a certain fixed interval (i.e., p1is kept in a corresponding interval, t1is kept greater than 1 or less than 1, and the value of p2is critical for the heating time T of the heating device), when the number k of starts of the heating device=1, the heating device is started for the first time, and thus the heating time of the heating device should be increased due to cold start, so as to ensure the effect of the first time of heat sealing. In such a case, p2>1. Furthermore, when 1<the number k of starts of the heating devices≤K, the heating device stably operates to heat. Thus, as long as the heating time of the heating device is unchanged, the heating device can keep stable heating. In such a case, p2=1. Moreover, when k>K, the heating device has accumulated some heat energy during repeated use. Thus, the heating time of the heating device should be reduced, to avoid inappropriate heat sealing caused by heat accumulation.

It should be noted that, depending on various heat sealing situations, if the time interval between two activations of the heating device is too long, the heating device can be determined as being completely cooled down. In such a case, the heating device should be operated in a manner of initial activation. That is, the heating device may be determined as being initially started. In the embodiment of the disclosure, the critical value may be set as 600 s. That is, if the time interval Δt between two starts of the heating device is greater than or equal to 600 s, k can be reset as 1, and the heating device may return to operating state after a long time of heating.

To sum up, the disclosure provides a smart heat sealing method for vacuum packaging, which measures the time interval Δt between two adjacent heating operations and the number k of starts of the heating device to achieve dynamic adjustment of current heating time T of the heating device. It solves the heat accumulation problem of the heating device caused by too much repeated use or overuse in short time interval, and greatly improves user experience.

All the above are merely some preferred embodiments of the disclosure. It should be noted that the disclosure is intended to cover various modifications and equivalent arrangements made by those skilled in the art and included within the principle of the disclosure.