阅读说明：本技术 智能型真空包装机及其真空包装方法 (Intelligent vacuum packaging machine and vacuum packaging method thereof ) 是由 戴志展 于 2021-05-06 设计创作，主要内容包括：一种智能型真空包装机及其真空包装方法,将该包装机的腔室从大气压降至额定真空度80％的所需时间记录为第一段时间,在这段时间中以所有单位时间真空度数值的变化量为参数,通过程序运算得出该腔室达到额定真空度的尚需时间(称为第二段时间)；第一段时间与第二段时间的加总即为总真空包装时间；将总真空包装时间扣除已进行的抽真空时间而得一剩余时间,该包装机的时间继电器依据该剩余时间控制真空泵的停止时点。本发明控制方法使该真空包装机可自动依据待包装物的体积而智能判断自动调整抽真空时间,达到额定真空度。(The intelligent vacuum packing machine and its vacuum packing method record the time from atmospheric pressure drop to 80% of rated vacuum degree in the cavity of the packing machine as the first period of time, and obtain the time (called the second period of time) that the cavity needs to reach the rated vacuum degree through program operation with the variation of vacuum degree value in all unit time as parameter; the sum of the first period of time and the second period of time is the total vacuum packaging time; and deducting the total vacuum packaging time from the performed vacuumizing time to obtain a residual time, and controlling the stop time of the vacuum pump by a time relay of the packaging machine according to the residual time. The control method of the invention can make the vacuum packaging machine intelligently judge and automatically adjust the vacuum-pumping time according to the volume of the object to be packaged, thereby achieving the rated vacuum degree.)

1. A vacuum packing method of intelligent vacuum packing machine, the vacuum packing machine includes a machine body and a machine cover enclosing a chamber; a vacuum pump and an electromagnetic valve which are communicated with the chamber to vacuumize and return air; a vacuum gauge for detecting the vacuum degree of the chamber; a heat sealing module for sealing the object to be packaged in the chamber; a panel for presetting rated vacuum degree, sealing pressure and heating time; a time relay for detecting and controlling the operation time of the vacuum pump; and a control system for commanding, controlling, commanding and managing the vacuum pump, the electromagnetic valve, the heat seal module, the panel and the time relay; the method is characterized in that: the vacuum packaging method comprises the following steps:

1) presetting rated vacuum degree, sealing pressure and heating time through the panel;

2) putting a to-be-packaged object into the chamber, and putting a bag opening of the to-be-packaged object on the heat sealing module; covering the machine cover, wherein the chamber is in an airtight state;

3) the control system starts the vacuum pump, the time required for the chamber to reach a percentage value of the rated vacuum degree from the atmospheric pressure is a first period of time, the control system takes a vacuum degree value of each unit time in the first period of time as a parameter, and a second period of time for the chamber to reach the rated vacuum degree is obtained through program operation; the control system adds the first period of time and the second period of time to obtain total vacuum packaging time;

4) the control system deducts the total vacuum packaging time from the performed vacuumizing time to obtain a residual time, and the time relay takes the residual time as the time point for controlling the vacuum pump to stop;

5) the vacuum pump stops, and the heat-sealing module carries out heat-pressing sealing on the bag opening of the object to be packaged;

6) the solenoid valve introduces the external atmosphere into the chamber to complete vacuum packaging.

2. The vacuum packing method of the intelligent vacuum packing machine according to claim 1, wherein: the percentage value of the step 3) is 60-85%.

3. The vacuum packing method of the intelligent vacuum packing machine according to claim 1, wherein: the percentage value of step 3) was 80%.

4. An intelligent vacuum packaging machine comprising:

a machine body and a machine cover which enclose a cavity;

a vacuum pump and an electromagnetic valve which are communicated with the chamber to vacuumize and return air;

a time relay for detecting and controlling the operation time of the vacuum pump;

a vacuum gauge for detecting the vacuum degree of the chamber;

a heat sealing module for sealing the object to be packaged in the chamber;

a panel for presetting rated vacuum degree, sealing pressure and heating time; and

a control system for commanding, controlling, commanding and managing the vacuum pump, the solenoid valve, the heat seal module, the panel and the time relay; the method is characterized in that:

the control system includes:

the recording module records a rated vacuum degree, a first period of time, the vacuum degree of each unit time in the first period of time, a second period of time and total vacuum packaging time;

an operation module for operating the second period of time and the total vacuum packaging time;

the first period of time is the time required for the chamber to drop from atmospheric pressure to a percentage value of the nominal vacuum;

the second period of time is the time that the operation module takes the vacuum degree value of each unit time in the first period of time as a parameter to calculate to obtain the time that the cavity needs to reach the rated vacuum degree;

the total vacuum packaging time is the sum of the first period of time and the second period of time.

5. The intelligent vacuum packaging machine according to claim 4, wherein: the percentage value is 60 to 85 percent.

6. The intelligent vacuum packaging machine according to claim 4, wherein: the percentage value is 80%.

Technical Field

The present invention relates to a vacuum packing apparatus and method, and more particularly, to an internally-pumped vacuum packing machine and a method for controlling the same.

Background

The vacuum packaging machine is divided into an inner-pumping type and an outer-pumping type, which are simply distinguished, the inner-pumping type vacuum packaging machine is provided with a vacuum chamber, and a product is placed in the vacuum chamber for vacuum pumping and sealing. The external vacuum packaging machine is placed in a packaging bag through an air suction nozzle for vacuumizing, and after vacuumizing is finished, the air suction nozzle is withdrawn and then sealed. The internal vacuum-pumping packaging machine is mainly used for packaging food and the like, and the requirement on vacuum degree is high. The degree of gas rarefaction in a vacuum state is called vacuum degree (degree of vacuum), and is generally expressed by a pressure value.

The working operation process of the internal vacuum packaging machine generally comprises the following steps: placing a package (with an opening) in a vacuum chamber, closing the vacuum chamber, operating a vacuum pump, vacuumizing the vacuum chamber, simultaneously vacuumizing the package, ascending a pointer of a vacuum meter to reach a rated vacuum degree, and stopping the vacuum pump; then, the heat sealer works to heat seal the bag mouth of the packing material; then, the outside air enters the vacuum chamber through the air inlet, the vacuum chamber is under the atmospheric pressure, and the packaging bag is inwards shrunk along with the product due to the pressure difference between the inside and the outside of the packaging bag, so that the vacuum packaging is completed.

The key to make the vacuum chamber reach the rated vacuum degree is the operation time of the vacuum pump (controlled by a time relay), and the operation time (or vacuum pumping time) is operated and set by professional personnel. After the articles to be vacuum-packed are placed in a vacuum packing machine, the optimal vacuum packing seconds of the articles to be packed are manually tested, and the optimal vacuum packing seconds are obtained after different seconds are tested.

In the above test, the cost of many test failures, such as the consumption of packaging material, the object to be packaged, machinery and electricity, is generated, and most of all, much time is wasted. In a commercial environment where time is money, the loss of time is a need to be improved. Secondly, performing a first step; the professional personnel is required to set the vacuum package of various packages, which affects the efficiency of the vacuum package and the utilization rate of the machine.

Disclosure of Invention

In order to solve the above problems, the present invention provides an intelligent vacuum packaging machine and a control method thereof.

The technical means of the invention are as follows:

a vacuum packing method of intelligent vacuum packing machine, the vacuum packing machine includes a machine body and a machine cover enclosing a chamber; a vacuum pump and an electromagnetic valve which are communicated with the chamber to vacuumize and return air; a vacuum gauge for detecting the vacuum degree of the chamber; a heat sealing module for sealing the object to be packaged in the chamber; a panel for presetting rated vacuum degree, sealing pressure and heating time; a time relay for detecting and controlling the operation time of the vacuum pump; and a control system for commanding, controlling, commanding and managing the vacuum pump, the electromagnetic valve, the heat seal module, the panel and the time relay;

the vacuum packaging method comprises the following steps:

1) presetting rated vacuum degree, sealing pressure and heating time through the panel;

2) putting a to-be-packaged object into the chamber, and putting a bag opening of the to-be-packaged object on the heat sealing module; covering the machine cover, wherein the chamber is in an airtight state;

3) the control system starts the vacuum pump, the time required for the chamber to reach a percentage value of the rated vacuum degree from the atmospheric pressure is a first period of time, the control system takes a vacuum degree value of each unit time in the first period of time as a parameter, and a second period of time for the chamber to reach the rated vacuum degree is obtained through program operation; the control system adds the first period of time and the second period of time to obtain total vacuum packaging time;

4) the control system deducts the total vacuum packaging time from the performed vacuumizing time to obtain a residual time, and the time relay takes the residual time as the time point for controlling the vacuum pump to stop;

5) the vacuum pump stops, and the heat-sealing module carries out heat-pressing sealing on the bag opening of the object to be packaged;

6) the solenoid valve introduces the external atmosphere into the chamber to complete vacuum packaging.

An intelligent vacuum packaging machine comprising:

a machine body and a machine cover which enclose a cavity;

a vacuum pump and an electromagnetic valve which are communicated with the chamber to vacuumize and return air;

a time relay for detecting and controlling the operation time of the vacuum pump;

a vacuum gauge for detecting the vacuum degree of the chamber;

a heat sealing module for sealing the object to be packaged in the chamber;

a panel for presetting rated vacuum degree, sealing pressure and heating time; and

a control system for commanding, controlling, commanding and managing the vacuum pump, the solenoid valve, the heat seal module, the panel and the time relay; the method is characterized in that:

the control system includes:

the recording module records a rated vacuum degree, a first period of time, the vacuum degree of each unit time in the first period of time, a second period of time and total vacuum packaging time;

an operation module for operating the second period of time and the total vacuum packaging time;

the first period of time is the time required for the chamber to drop from atmospheric pressure to a percentage value of the nominal vacuum;

the second period of time is the time that the operation module takes the vacuum degree value of each unit time in the first period of time as a parameter to calculate to obtain the time that the cavity needs to reach the rated vacuum degree;

the total vacuum packaging time is the sum of the first period of time and the second period of time.

Recording the time required by the chamber of the packaging machine from atmospheric pressure drop to 80% of rated vacuum degree as a first period of time, and obtaining the time (called as a second period of time) required by the chamber to reach the rated vacuum degree through program operation by taking the variation of the vacuum degree value in all unit time as a parameter during the first period of time; the sum of the first period of time and the second period of time is the total vacuum packaging time; and deducting the total vacuum packaging time from the performed vacuumizing time to obtain a residual time, and controlling the stop time of the vacuum pump by a time relay of the packaging machine according to the residual time.

The invention has the beneficial effects that:

the control method of the invention can make the vacuum packaging machine intelligently judge and automatically adjust the vacuum-pumping time according to the volume of the object to be packaged, thereby achieving the rated vacuum degree.

The control method of the invention can pack any solid object, especially food, without testing in advance, the object to be packed is put into the packing machine for vacuum packing, and the vacuum packing is automatically executed immediately, and the optimized vacuum packing is achieved, no professional is needed to judge the conditions in the process, the burden and the personal carelessness of the operator are reduced, the failure rate of the vacuum packing is greatly reduced, and the repeated testing is not needed to achieve the optimal packing scheme, thereby saving the time.

The packaging machine can be operated by non-professional personnel, and when different articles are packaged in vacuum, the packaging time does not need to be tested and revised by the professional personnel, and all the detection and revision of the packaging process and the packaging time are completely processed by the intelligent packaging machine.

Drawings

Fig. 1 is one of perspective external views of the vacuum packing machine of the present invention.

Fig. 2 is a second perspective view of the vacuum packaging machine of the present invention.

Fig. 3 is a side view of the vacuum packing machine of the present invention.

Fig. 4 is a block diagram of the vacuum packaging machine module of the present invention.

Fig. 5 is a schematic view illustrating a vacuum packing performed by the vacuum packing machine of the present invention.

Fig. 6 is a second schematic view of the vacuum packaging machine according to the present invention for performing vacuum packaging.

Fig. 7 is a schematic view showing the relationship between time and vacuum degree of the vacuum packing machine of the present invention.

10: body

11 chamber

12 vacuum suction port

13: air inlet

14: platform

20: machine cover

21 gas barrier seal

30 heat seal module

31 electric heating sealer

32 thermal liner

40 control system

41 vacuum pump

42 electromagnetic valve

43 face plate

44 recording module

45 operation module

50: time relay

60 vacuum gauge

70, to-be-packaged

Detailed Description

Referring to fig. 1 to 4, the vacuum packing machine of the present invention includes:

a body 10, the body 10 having a cavity 11 therein, the cavity 11 being opened on a top surface of the body 10; the machine body 10 is provided with a vacuum suction port 12 and an air inlet 13 communicated with the chamber 11; the vacuum suction port 12 is connected to a vacuum pump 41 through a pipe built in the body 10, and the air inlet 13 is also connected to the outside through a pipe built in the body 10 and an electromagnetic valve 42; a platform 14 for placing articles, which can be adjusted in height, is provided in the chamber 11; a package 70 to be packaged is placed on the platform 14, and a packaging bag of the package 70 is provided with an opening;

a lid 20, which is combined with the machine body 10 by the known lifting and closing technique; the cover 20 is provided with an air-tight sealing member 21 corresponding to the side wall of the machine body 10; the cover 20 is closed on the opening of the body 10, and the chamber 11 is hermetically sealed;

a heat sealing module 30, comprising an electric heat sealer 31 and a heat lining 32, wherein the electric heat sealer 31 is arranged in the chamber 11, and the heat lining 32 is arranged on the inner side surface of the cover 20; the mouth of the object to be packaged 70 placed on the platform 14 is lapped between the electric heating sealer 31 and the hot lining piece 32;

a vacuum gauge 60 for sensing the degree of vacuum of the chamber 11;

a time relay 50 for detecting and controlling the operation time of the vacuum pump 41;

a control system 40, disposed on the machine body 10, electrically coupled to the vacuum pump 41, the solenoid valve 42, the heat sealing module 30, the time relay 50, and the vacuum gauge 60, for commanding, controlling, commanding and managing the operations thereof. The control system 40 further includes a panel 43 disposed outside the machine body 10, and the control system 40 records the rated vacuum degree, the sealing pressure and the heating time through the panel 43.

The control system 40 implements a control method for controlling the vacuuming operation of the packaging machine.

In the following description of the present invention, it is assumed that the average pumping rate of the calibration specification of the vacuum pump 41 is constant. The principle of the invention is that the volume of the chamber of the packaging machine is fixed, and under the condition of the same mechanical condition, the volume of the object to be packaged is the key of influencing the vacuum-pumping time of the packaging machine. The volume of the liquid-free object to be packed is inversely proportional to the time for vacuum packing, in other words, the more space the object to be packed occupies in the chamber 11, the shorter the vacuum packing time. Since the more space of the chamber is occupied, the less space is required to be evacuated and the faster the rated vacuum can be achieved.

Referring to fig. 5 and 6, a package 70 is placed in the platform 14 of the chamber 11, the mouth of the bag is put between the electric heat sealer 31 and the thermal lining 32, the lid 20 is closed, and the chamber 11 is airtight; the control system 40 executes a vacuum pumping control method, which includes:

the control system 40 starts the vacuum pump 41, the control system 40 takes the time required for the chamber 11 to fall from the standard atmospheric pressure to a percentage value (60% -85%, preferably 80%) of the rated vacuum degree as a first period of time (also referred to as operation measurement time), during which the vacuum gauge 60 continuously detects the change of the vacuum degree of the chamber 11 per unit time, and the control system 40 takes the change of the vacuum degree value per unit time as a parameter, and obtains the time (referred to as second period of time) required for the chamber 11 to reach the rated vacuum degree through program operation. The control system sums the first period of time and the second period of time to obtain a total vacuum packaging time. The control system deducts the total vacuum packaging time from the performed vacuumizing time to obtain a residual time, and the time relay controls the stop time of the vacuum pump according to the residual time.

After the vacuum pump is stopped, the control system 40 commands the heat sealing module 30 to perform heat sealing on the mouth of the object to be packaged 70, and then the control system 40 controls the electromagnetic valve 42 to allow the external atmosphere to enter the chamber 11 through the air inlet 13, the chamber 11 is under atmospheric pressure, and due to the difference between the pressure inside and outside the packaging bag, the packaging bag shrinks inwards against the product, thereby completing the vacuum packaging.

For example, assuming a nominal vacuum of 1kpa, (101.325 kpa for 1 atm, rounded to 101kpa), the percentage value of the nominal vacuum is set to 80%, i.e., 20 kpa. The control system starts the vacuum pump, and the time required for the chamber to decrease from 101kpa to 20kpa is 15 seconds (first period), during which the vacuum gauge continuously detects the vacuum degree change per second, all values are used as parameters of program operation, and 5 seconds (second period) are required for the chamber to reach the rated vacuum degree (1kpa) through the program operation. From this, the control system calculated that the total vacuum packing time was 20 seconds (15 seconds +5 seconds). The control system deducts the total vacuum packaging time (20 seconds) from the evacuation time (assumed to be 16 seconds) to obtain a remaining time (4 seconds), and the time relay controls the vacuum pump to stop operating after 4 seconds. And then performing heat sealing and air return, and finishing the vacuum packaging operation.

As further shown in fig. 4, in summary, the control system 40 includes:

a recording module 44 for recording the rated vacuum degree, the first period of time, the vacuum degree variation of each unit time in the first period of time, the second period of time and the total vacuum packaging time;

and an operation module 45 for performing a program operation by using the first period of time, the vacuum degree variation of each unit time and the rated vacuum degree as parameters through a program to obtain the second period of time, and summing the first period of time and the second period of time to obtain the total vacuum packaging time.