Blow molding air tap for freshness protection bag

Abstract

The utility model relates to the field of freshness protection bag production, in particular to a blow molding air tap for freshness protection bags. The utility model provides a blow molding air tap for a freshness protection bag. The utility model discloses a blow molding air tap for a freshness protection bag. The blow molding air tap comprises a mounting table, mounting stand columns, air outlet pieces, opening plates, springs, air pipes and air bags, in the process of pulling up the fresh-keeping bag, the fresh-keeping bag can have a trend of being opened in advance by means of the cooperation of the opening plate and the spring, so that an operator can pull up the fresh-keeping bag more conveniently, the fresh-keeping bag is prevented from being attached to the device, and meanwhile, in the blow molding process, by means of slow expansion of the air bag, the fresh-keeping bag is prevented from being broken down. Therefore, the freshness protection package can be kept open, and the molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of fresh-keeping bag production, in particular to a fresh-keeping bag blow molding air nozzle. Background Art

[0002] Fresh-keeping bags are usually made by blow molding, which is a common plastic processing method. The melted plastic is extruded into a tube or film through an extrusion mechanism to form a plastic blank. In the blow molding machine, the operator pulls up the plastic blank on the air nozzle, and then relies on the hands to pull and support the plastic blank so that the fresh-keeping bag can be gradually formed. There are two problems in this process. One is that when the operator pulls up the plastic blank, the plastic blank has strong adhesion, which easily causes the plastic blank to stick to the equipment, and it is easy to cause friction and damage when pulling it up. The second is that the operator needs to assist in the molding of the plastic blank, and the hands need to pull the blank, which requires a large amount of operation intensity.

[0003] Therefore, a kind of fresh-keeping bag blow molding air nozzle is now developed for the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the existing device, the utility model provides a fresh-keeping bag blow molding air nozzle.

[0005] The technical implementation scheme of the utility model is: a fresh-keeping bag blow molding air nozzle, including a mounting platform, a mounting column is installed on the mounting platform, an air outlet is connected to the top of the mounting column, four support plates are rotatably connected to the upper part of the mounting column, and springs are connected between the support plates and the mounting columns.

[0006] More preferably, an air pipe is further included. The interior of the mounting column is connected to the air pipe. The bottom end of the air pipe is connected to the air transmission equipment. The upper part of the mounting column is connected to an air bag. The air bag is in communication with the air pipe.

[0007] More preferably, four stands are connected to the outer side of the mounting platform.

[0008] More preferably, the support plates are all arc-shaped structures.

[0009] More preferably, a limiting block for limiting the position of the air pipe is connected to the mounting column.

[0010] More preferably, the surface of the airbag has wrinkles.

[0011] By adopting the above technical solution, compared with the prior art, the utility model has the following advantages:

[0012] In the process of pulling up the fresh-keeping bag, the utility model relies on the cooperation of the opening plate and the spring to make the fresh-keeping bag have a tendency to open in advance, so that the operator is more convenient when pulling up the fresh-keeping bag and avoids the fresh-keeping bag from fitting with the device. At the same time, during the blow molding process, the fresh-keeping bag can be kept open by relying on the slow expansion of the airbag, thereby improving the molding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 This is a schematic diagram of a first partial three-dimensional structure of the utility model.

[0015] Figure 3 This is a schematic diagram of a second partial three-dimensional structure of the utility model.

[0016] The meanings of the reference numerals in the figure are: 1. mounting platform, 2. mounting column, 3. air outlet, 4. opening plate, 5. spring, 6. air pipe, 7. air bag. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] A fresh-keeping bag blow molding air nozzle, such as Figure 1 and Figure 2 As shown, it includes a mounting platform 1, a mounting column 2 is installed on the mounting platform 1, four standing boards are connected to the outer side of the mounting platform 1, so that the operator can stand and operate conveniently, an air outlet 3 is connected to the top of the mounting column 2, four support plates 4 are rotatably connected to the upper part of the mounting column 2, and the support plates 4 are all arc-shaped structures, which can avoid scratches on the inner side of the fresh-keeping bag, and springs 5 ​​are connected between the support plates 4 and the mounting column 2.

[0019] like Figure 1 and Figure 3 As shown, it also includes an air pipe 6, the air pipe 6 is connected to the inside of the mounting column 2, the bottom end of the air pipe 6 is connected to the gas transmission equipment, the upper part of the mounting column 2 is connected to an air bag 7, the air bag 7 is connected to the air pipe 6, and a limiting block for limiting the air pipe 6 is connected to the mounting column 2. The surface of the air bag 7 has wrinkles, which can increase the friction with the fresh-keeping bag.

[0020] It should be noted that in the process of producing fresh-keeping bags, a device is needed to blow-mold the fresh-keeping bags. The use of this device can effectively assist operators to improve the efficiency of blow-molding and reduce the intensity of manual operation. First, the injection-molded fresh-keeping bag is pulled up along the mounting column 2. With the cooperation of the expansion plate 4 and the spring 5, the fresh-keeping bag can be opened to a certain extent, making it easier for the operator to pull the fresh-keeping bag up and connect it with other equipment to avoid the fresh-keeping bag from fitting against the mounting column 2, which increases the difficulty of pulling up the fresh-keeping bag. Then, the mounting column 2 is used to supply air to the air outlet 3, and the air outlet 3 guides the gas to be discharged to shape the fresh-keeping bag. At the same time, the gas will also enter the air bag 7 through the trachea 6, causing the air bag 7 to begin to expand slowly, thereby simulating the state of a person pulling the fresh-keeping bag by hand, so that the fresh-keeping bag can remain open and improve the shaping efficiency.

[0021] Although the present disclosure has been shown and described with reference to specific exemplary embodiments of the present disclosure, it should be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-mentioned embodiments, but should be determined not only by the appended claims, but also by the equivalents of the appended claims.

Claims

1. A fresh-keeping bag blow molding air nozzle, characterized by: The invention comprises a mounting platform (1), a mounting column (2) being mounted on the mounting platform (1), an air outlet member (3) being connected to the top of the mounting column (2), four support plates (4) being rotatably connected to the top of the mounting column (2), and springs (5) being connected between the support plates (4) and the mounting column (2).

2. A fresh-keeping bag blow molding air nozzle according to claim 1, characterized in that: It also includes an air pipe (6), the interior of the mounting column (2) is connected to the air pipe (6), the bottom end of the air pipe (6) is connected to the gas transmission equipment, the top of the mounting column (2) is connected to an air bag (7), and the air bag (7) is in communication with the air pipe (6).

3. A fresh-keeping bag blow molding air nozzle according to claim 1, characterized in that: Four standing boards are connected to the outer side of the mounting platform (1).

4. A fresh-keeping bag blow molding air nozzle according to claim 1, characterized in that: The support plates (4) are all arc-shaped structures.

5. A fresh-keeping bag blow molding air nozzle according to claim 2, characterized in that: The installation column (2) is connected to a limiting block for limiting the position of the air pipe (6).

6. A fresh-keeping bag blow molding air nozzle according to claim 2, characterized in that: The surface of the airbag (7) has wrinkles.

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