CN108528810A - Vacuum packaging method and device for square objects in plastic bag - Google Patents

Abstract

The present invention provides a vacuum packaging method for square objects in a plastic bag, including the following steps for the opening of the plastic bag filled with square objects: synchronously moving a pair of levers and a suction nozzle to implant into the opening of the plastic bag, then moving the pair of levers to open the opening of the plastic bag to form a straight-line gap, allowing the suction nozzle to continuously guide negative pressure into the plastic bag to establish a vacuum, and moving a pair of pressing plates up and down to press the surface of the plastic bag around the straight-line gap, thereby sealing the straight-line gap. The present invention further provides a vacuum packaging device for square objects in a plastic bag required for implementing the above method. In this way, the problem of the prior art that a plastic bag filled with square objects can only be vacuum packaged by manual operation is improved.

Description

Vacuum packaging method and device for square objects in plastic bags

technical field

The invention relates to a technology for vacuum packaging square objects with plastic bags before shipment, in particular to a vacuum packaging method and device for plastic bags filled with square objects.

Background technique

Generally, products or objects are usually packaged in a vacuum way after the production is completed, and vacuum packaging generally relies on plastic bags to fill the objects, and then the air in the bags is extracted, and the plastic bags are sealed to complete the objects in the bags vacuum packaging operations.

Here, taking the vacuum packaging operation of mobile phone panels seen on the market before shipment as an example, it shows that the panels will be placed one by one on a tray after production, and the multiple panels that have been placed The trays are stacked to form a square object, and then the square object is accommodated in a plastic bag and vacuum-packed. In addition to the above-mentioned trays, many square-shaped objects in the market also need to be vacuum-packed before shipment.

The operation of vacuum packaging objects is to prevent the problem that the objects are prone to moisture during the transportation after shipment, such as the influence of cold and hot temperatures, or the weather factors such as water vapor and humidity, which are easily encountered during sea and land transportation. influences. Therefore, the items need to be vacuum-packed before shipment to avoid the phenomenon of moisture affecting the quality or damage of the items due to the above factors.

In the process of vacuum packaging, since the texture of the plastic bag is soft and easy to collapse, especially when the opening of the plastic bag is opened to fill the object, it is not conducive to the control of automatic machines. The operation procedure of carrying out vacuum packaging of objects (especially square objects) in plastic bags is done manually.

Contents of the invention

In view of this, the technical problem to be solved by the present invention is to improve the problem in the prior art that the plastic bags filled with square objects can only be vacuum-packed by manual operation.

In order to overcome the above-mentioned technical problems, an object of the present invention is to provide a vacuum packaging method for square-shaped objects in a plastic bag, which is characterized in that the following steps are performed for the opening of the plastic bag filled with square-shaped objects:

Synchronously move a pair of tongue-shaped levers and a tongue-shaped suction nozzle to implant into the opening of the plastic bag, and move the pair of tongue-shaped levers continuously to open the opening of the plastic bag to form a straight gap;

Make the suction nozzle continuously guide the negative pressure into the plastic bag to capture the air in the plastic bag to form a vacuum;

Move a pair of pressing plates up and down to press the surface of the plastic bag on the periphery of the in-line gap, and then seal the in-line gap;

Wherein, the pair of pressing plates and the lower pressing plate synchronously move the pair of tongue-shaped levers and the suction nozzle out of the inline gap, and at least one of the pair of pressing plates is an electric heating pressing plate.

In a further implementation, the pair of tongue-shaped driving rods are implanted into the opening of the plastic bag at a distance relatively close to the suction nozzle, and open the opening of the plastic bag at a distance relatively far away from the suction nozzle.

In a further implementation, the distance relatively close to the suction nozzle and the distance relatively far away from the suction nozzle are located on the same straight path, and the same straight path is called a first straight path.

In a further implementation, the pair of tongue-shaped levers and the suction nozzle are located on the first straight path.

In a further implementation, the pair of pressing plates presses up and down the surface of the plastic bag around the inline slit along a second straight path, and the second straight path and the first straight path are perpendicular to each other.

The above method can be realized by a device technology. For this reason, a specific embodiment of the present invention is to provide a vacuum packaging device for square objects in a plastic bag, which is characterized in that it includes:

A carrying platform is movable on one side of a working table, and a plastic bag filled with square objects is placed on the working table, and the opening of the plastic bag faces the direction where the carrying platform is located;

A pair of tongue-shaped levers are respectively slid on the platform;

A tongue-shaped suction nozzle is fixed between the pair of tongue-shaped driving rods on the carrier; and

A pair of pressing plates are movable above and below the opening of the plastic bag placed on the workbench, at least one of the pair of pressing plates is an electric heating pressing plate.

In a further implementation, the pair of tongue-shaped levers and the suction nozzle are implanted into the opening of the plastic bag driven by the carrier.

In a further implementation, the pair of tongue-shaped driving rods are implanted into the opening of the plastic bag at a distance relatively close to the suction nozzle, and open the opening of the plastic bag at a distance relatively far away from the suction nozzle.

In a further implementation, the opening of the plastic bag forms an in-line gap through the expansion of the pair of tongue-shaped levers.

In a further implementation, the pair of tongue-shaped levers move along a first linear path to the distance relatively close to the suction nozzle or the distance relatively far away from the suction nozzle.

In a further implementation, the pair of tongue-shaped levers and the suction nozzle are located on the first straight path.

In a further implementation, the pair of pressing plates presses up and down the surface of the plastic bag around the glyph-shaped gap along a second straight path, and the second straight path and the first straight path are perpendicular to each other.

According to the above-mentioned technical means, the technical effect of the present invention is: for the automatic vacuum packaging operation of the plastic bags filled with square objects, the efficiency of vacuum packaging of square objects before shipment from the production line can be improved.

The technical means of the above-mentioned method and device and the specific implementation details of generating performance, please refer to the following examples and drawings for illustration.

Description of drawings

Fig. 1 is the flow chart of the steps of the vacuum packaging method of a square object in a plastic bag of the present invention;

Fig. 2a to Fig. 2e are respectively the action schematic diagrams of implementing the method in Fig. 1;

Fig. 3 is the three-dimensional schematic diagram of the vacuum packaging device of the square object in the plastic bag of the present invention;

Fig. 4 is the front view of Fig. 3;

Fig. 5 is a side view of Fig. 3;

6a to 6e are schematic diagrams of the operation of the vacuum packaging device for square objects in plastic bags according to the present invention.

Explanation of reference signs: 10 plastic bag; 11 opening; 12 inline gap; 20a, 20b lever; 21a, 21b linear slide rail; 30 suction nozzle; cylinder; 50 biaxial moving mechanism; 51 vertical driver; 52 horizontal driver; 60 carrier;

Detailed ways

Please refer to FIG. 1 , illustrating the vacuum packaging method for a square object in a plastic bag provided by the present invention, including performing the following steps S1 to S5 in sequence:

Step S1: Insert the lever and suction nozzle into the opening of the plastic bag

Please refer to Fig. 2 a, it is illustrated that the plastic bag 10 refers to a quadrangular plastic bag in the present invention, and the plastic bag 10 has an opening 11, so that objects can be loaded into the plastic bag 10 through the opening 11, the opening of the plastic bag 10 11 is irregular due to the support of the filled objects in the plastic bag 10; a pair of tongue-shaped levers 20a, 20b and a tongue-shaped suction nozzle 30 are implanted into the opening 11 of the plastic bag 10 in a manner of synchronous movement, The pair of driving rods 20a, 20b and the suction nozzle 30 are located on a straight path A in practice, and the suction nozzle 30 is interposed between the pair of driving rods 20a, 20b, and the pair of driving rods 20a , 20b are implanted into the opening 11 of the plastic bag 10 at a distance h1 relatively close to the suction nozzle 30, and the distance h1 is actually smaller than the width of the opening 11 of the plastic bag 10, so as to facilitate the pair of levers 20a, 20b and the suction nozzle 30 are inserted into the opening 11 of the plastic bag 10 .

Step S2: Push the lever to open the opening of the plastic bag to form a straight gap

Please refer to FIG. 2b , which illustrates the pair of levers 20a. 20b moves along the straight path A in a direction relatively far away from the suction nozzle 30, and then supports the opening 11 of the plastic bag 10, so that the opening 11 of the plastic bag 10 forms an in-line gap 12, and the pair of levers 20a, 20b are implementing In the above, the opening 11 of the plastic bag 10 is opened by a distance h2 relatively far away from the suction nozzle 30 .

Step S3: The suction nozzle guides the negative pressure into the plastic bag to create a vacuum

Please refer to FIG. 2c, which illustrates that the suction nozzle 30 has a gas flow channel 31 inside. When the suction nozzle 30 is inserted into the opening 11 of the plastic bag 10, the suction nozzle 30 continues to guide negative pressure through the gas flow channel 31 to In the plastic bag 10, to capture the air in the plastic bag 10, because the opening 11 of the plastic bag 10 is supported by the pair of levers 20a, 20b to form an inline slit 12, the area of the inline slit 12 is smaller than that of the plastic The area of the opening 11 of the bag 10 , so the suction nozzle 30 can reduce the outside air from entering the plastic bag 10 when picking up the air in the plastic bag 10 , so as to form a vacuum state in the plastic bag 10 .

Step S4: Press the platen to fit the inline gap

Please refer to Fig. 2d, which illustrates that a pair of pressing plates 40a, 40b are arranged above and below the inline slit 12 respectively, and the pair of pressing plates 40a, 40b can press the periphery of the inline slit 12 up and down along a straight line path B The surface of the plastic bag 10, and the pair of pressing plates 40a, 40b synchronously move the pair of levers 20a, 20b and the suction nozzle 30 away from the in-line gap 12 at the moment of pressing up and down, so that the in-line gap 12 passes through The pressing of the pair of pressing plates 40a, 40b closes tightly, so as to prevent outside air from entering the plastic bag 10 through the in-line gap 12, thereby maintaining the vacuum state in the plastic bag 10. The straight paths A are perpendicular to each other.

Step S5: Seal the inline gap

Please refer to Fig. 2e, which illustrates that when the pair of driving levers 20a, 20b and the suction nozzle 30 are separated from the inline slit 12, the inline slit 12 is tightly closed by virtue of the pressing of the pair of pressure plates 40a, 40b, and then Carry out sealing operation with this inline slit 12 at high temperature, in this pair of pressing plates 40a, 40b, at least one pressing plate is an electric heating pressing plate in implementation, so that carry out sealing operation after pressing this inline slit 12.

On the other hand, please refer to Fig. 3, Fig. 4 and Fig. 5 in combination, which illustrate that the present invention also provides a vacuum packaging device for square objects in plastic bags, so that the vacuum packaging method for square objects in plastic bags can be easily carried out. implement. From the above, it can be seen that the vacuum packaging device for square objects in a plastic bag includes a pair of driving levers 20a, 20b, a suction nozzle 30, and a pair of pressing plates 40a, 40b. in:

The pair of driving rods 20a, 20b are respectively slidably arranged on a stage 60, and the stage 60 is movable and arranged on one side of a working surface 70, on which loaded square objects are placed. 80 of the plastic bag 10, the opening 11 of the plastic bag 10 faces the direction of the stage 60, the pair of levers 20a, 20b can be driven by the stage 60 to move along the Y-Z axis, and then implant the plastic Inside the opening 11 of the bag 10. Furthermore, the stage 60 is implemented on a biaxial movement mechanism 50, the biaxial movement mechanism 50 includes a vertical driver 51 and a horizontal driver 52, the vertical driver 51 can drive the load The platform 60 moves along the Z axis, and the horizontal driver 52 can drive the stage 60 to move along the Y axis. More specifically, since the plastic bag 10 is easy to collapse because of its soft texture, the position of the opening 11 of the plastic bag 10 is relatively low, so it is necessary to adjust the height of the pair of driving levers 20a, 20b so that the The levers 20a, 20b are implanted into the opening 11 of the plastic bag 10 .

The suction nozzle 30 is fixed on the platform 60 and located between the pair of levers 20a, 20b, the suction nozzle 30 can be inserted into the opening 11 of the plastic bag 10 driven by the platform 60 . Furthermore, the suction nozzle 30 and the pair of levers 20a, 20b are located on a straight path A, and the pair of levers 20a, 20b can be relatively close to or close to the position of the suction nozzle 30 along the straight path A. Relatively far away, the straight path A is parallel to the X-axis in practice. More specifically, the pair of driving rods 20a, 20b are slidably installed on the platform 60 through a linear slide rail 21a, 21b respectively, so that the pair of driving rods 20a, 20b can reciprocate along the linear path A, Then relatively close to or relatively far away from the suction nozzle 30 .

The pair of pressing plates 40a, 40b are arranged above and below the opening 11 of the plastic bag 10 filled with square-shaped objects 80 placed on the work surface 70. The pair of pressing plates 40a, 40b are respectively connected with a vertical air cylinder. 41a, 41b, the pair of pressing plates 40a, 40b are respectively driven by the vertical pneumatic cylinders 41a, 41b to press up and down the surface of the plastic bag 10 on the periphery of the inline slit 12 along a straight path B. In practice, it is parallel to the Z axis, that is to say, the straight path B and the straight path A are perpendicular to each other. In the pair of pressing plates 40a, 40b, at least one of the pressing plates is an electric heating pressing plate in practice. After the pair of pressing plates 40a, 40b are loaded and pressed together with the in-line gap 12, the in-line gap 12 is then sealed.

According to the above configuration, please continue to refer to FIG. 6a to FIG. 6e , which sequentially reveal the action illustration diagrams of the present invention, illustrating that the pair of driving levers 20a, 20b and the suction nozzle 30 are driven by the carrier 60 and implanted into the plastic bag 10 In the opening 11 of the plastic bag 10 (as shown in Figure 6a), the pair of driving levers 20a, 20b move in a direction relatively away from the suction nozzle 30, and then open the opening 11 of the plastic bag 10, so that the opening 11 of the plastic bag 10 is formed Inline slit 12 (as shown in Figure 6b), the suction nozzle 30 takes the air in the plastic bag 10 with negative pressure to form a vacuum state in the plastic bag 10 (as shown in Figure 6c), then, the pair Pressing plate 40a, 40b presses the plastic bag 10 surface (as shown in Figure 6d) of this zigzag slit 12 periphery respectively from above and below, and synchronously this pair of driving lever 20a, 20b and this suction nozzle 30 are moved by this one. The zigzag gap 12 is pulled away, so that the zigzag gap 12 can be tightly closed through the pressing of the pair of pressing plates 40a, 40b. Finally, at least one of the pair of pressing plates 40a, 40b is an electric heating pressing plate. The plastic bag 10 is sealed (as shown in Figure 6e).

The above examples only express preferred specific implementations of the present invention, but should not be construed as limiting the patent scope of the present invention.

Claims (12)

1. A vacuum packaging method for a square object in a plastic bag, comprising the following steps for the opening of a plastic bag filled with a square object: Synchronously move a pair of tongue-shaped levers and a tongue-shaped suction nozzle to implant into the opening of the plastic bag, and move the pair of tongue-shaped levers continuously to open the opening of the plastic bag to form a straight gap; Make the suction nozzle continuously guide the negative pressure into the plastic bag to capture the air in the plastic bag to form a vacuum; Move a pair of pressing plates up and down to press the surface of the plastic bag on the periphery of the in-line gap, and then seal the in-line gap; Wherein, the pair of pressing plates and the lower pressing plate synchronously move the pair of tongue-shaped levers and the suction nozzle out of the inline gap, and at least one of the pair of pressing plates is an electric heating pressing plate. 2. The vacuum packaging method for a square object in a plastic bag according to claim 1, wherein the pair of tongue-shaped levers are implanted into the opening of the plastic bag at a distance relatively close to the suction nozzle, And stretch the opening of the plastic bag with a distance relatively away from the suction nozzle. 3. The vacuum packaging method for a square object in a plastic bag according to claim 2, wherein the distance relatively close to the suction nozzle and the distance relatively far away from the suction nozzle are located on the same linear path, which is called the same The straight path is a first straight path. 4. The vacuum packaging method for a square object in a plastic bag according to claim 3, wherein the pair of tongue-shaped levers and the suction nozzle are located on the first straight path. 5. The vacuum packaging method for a square object in a plastic bag according to claim 3, wherein the pair of pressing plates presses up and down the surface of the plastic bag around the in-line gap along a second linear path, And the second straight path is perpendicular to the first straight path. 6. A vacuum packaging device for square objects in a plastic bag, characterized in that it comprises: A carrying platform is movable on one side of a working table, and a plastic bag filled with square objects is placed on the working table, and the opening of the plastic bag faces the direction where the carrying platform is located; A pair of tongue-shaped levers are respectively slid on the platform; A tongue-shaped suction nozzle is fixed between the pair of tongue-shaped driving rods on the carrier; and A pair of pressing plates are movable above and below the opening of the plastic bag placed on the workbench, at least one of the pair of pressing plates is an electric heating pressing plate. 7 . The vacuum packaging device for square objects in a plastic bag according to claim 6 , wherein the pair of tongue-shaped levers and the suction nozzle are implanted into the opening of the plastic bag driven by the carrier. 7 . 8. The vacuum packaging device for square objects in a plastic bag according to claim 7, wherein the pair of tongue-shaped levers are implanted into the opening of the plastic bag at a distance relatively close to the suction nozzle, and The opening of the plastic bag is stretched relatively far away from the suction nozzle. 9 . The vacuum packaging device for square objects in a plastic bag according to claim 8 , wherein the opening of the plastic bag is stretched to form an in-line gap by the pair of tongue-shaped levers. 10. The vacuum packaging device for square objects in plastic bags according to claim 9, wherein the pair of tongue-shaped levers move along a first straight path to the distance relatively close to the suction nozzle or the relative distance. The distance away from the nozzle. 11 . The vacuum packaging device for square objects in plastic bags according to claim 10 , wherein the pair of tongue-shaped levers and the suction nozzle are located on the first straight path. 12. The vacuum packaging device for square objects in plastic bags according to claim 10, characterized in that: the pair of pressing plates presses up and down the surface of the plastic bag around the zigzag slit along a second linear path, and the first The two straight-line paths are perpendicular to the first straight-line path.