Packaging bag tensioning and forming device

Abstract

The utility model provides a packaging bag tensioning forming device which is characterized in that the packaging bag tensioning forming device comprises a first limiting ring body and a second limiting ring body, the first limiting ring body and the second limiting ring body are connected through a connecting rod, the first limiting ring body and the second limiting ring body are arranged up and down, and the first limiting ring body and the second limiting ring body are connected through a connecting rod. A plurality of rotating shafts are arranged between the first limiting ring body and the second limiting ring body at equal intervals through bearings, the rotating shafts are arranged in an annular array mode with the circle center of the first limiting ring body as the center, and a plurality of limiting pieces used for limiting packaging bags are arranged on the rotating shafts at equal intervals. A driving part for driving the rotating shaft to rotate is arranged on the first limiting ring body; according to the plastic packaging bag forming device, plastic packaging bags can be limited after being extruded, and packaging bags of different models can be formed.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag production, in particular to a packaging bag tensioning and forming device. Background Art

[0002] Packaging bags are used to package various items, facilitating transportation and storage during the production and distribution process. They are widely used in daily life and industrial production. However, actual statistics show that 80% of used plastic bags are ultimately disposed of in landfills like general waste, with only 7% being recycled. Existing heat-sealing processes for plastic packaging bags result in uneven edges on three sides, resulting in wrinkles in the bags. This, combined with the inability to seal properly when filled, can lead to air leaks and pose safety risks to items such as food. Furthermore, after sealing, the bags are prone to adsorption to the heat-sealing plate, resulting in uneven cutting and causing the film roll to become stretched and twisted.

[0003] In the field of food packaging, sheet packaging materials need to be made into bag structures. The raw materials are melted, and the plastic is extruded from the outlet of the melting machine and cooled. After cooling, the plastic strip is limited to a cylindrical shape and output, thereby forming a double-layer strip. However, the existing limiting structure is manually limited by the cylinder, but can only form fixed-size packaging bags. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a packaging bag tensioning and forming device that can limit the position of plastic packaging bags after extrusion and form them into packaging bags of different models.

[0005] The utility model is implemented by the following method: a packaging bag tensioning and forming device includes a first limiting ring body and a second limiting ring body, the first limiting ring body and the second limiting ring body are connected via a connecting rod, the first limiting ring body and the second limiting ring body are arranged up and down, a plurality of rotating shafts are arranged at equal distances between the first limiting ring body and the second limiting ring body via bearings, and the plurality of rotating shafts are arranged in a circular array with the center of the first limiting ring body as the center, a plurality of limiting parts for limiting the packaging bag are arranged at equal distances on the rotating shaft, and a driving part for driving the rotating shaft to rotate is provided on the first limiting ring body.

[0006] Furthermore, the limiting member includes a clamp, and a plurality of the clamps are equidistantly sleeved on the rotating shaft. The clamp is connected to a limiting rod, and the limiting rods on the plurality of rotating shafts are staggered.

[0007] Furthermore, the driving member includes a driving motor, and the driving motor for driving the leftmost rotating shaft to rotate is provided on the left end of the first limiting ring body. A gear is provided on the upper end of the rotating shaft, and the gears are connected to each other via a toothed belt.

[0008] The beneficial effects of the present invention are as follows: the present invention adds a first limiting ring body, a second limiting ring body, a limiting member and a driving member to the device, which can realize the limiting of the packaging bag after extrusion, and limit the packaging bag into a cylindrical shape, thereby realizing the molding of the packaging bag, and the angle of the limiting member can be adjusted by the driving member, so as to facilitate the molding of the packaging bag into cylindrical shapes with different diameters, thereby realizing the molding and production of packaging bags of different models; the present invention has a simple structure and is easy to operate, can effectively save manpower and material resources, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of the present utility model.

[0010] Figure 2 It is a bottom view of the present utility model.

[0011] Figure 3 Schematic diagram of the structure of the limiting member. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] See also Figures 1 to 3 As shown, the utility model provides an embodiment: a packaging bag tensioning and forming device, comprising a first limiting ring body 1 and a second limiting ring body 2, connected by a connecting rod 3. The first limiting ring body 1 and the second limiting ring body 2 are arranged vertically. A plurality of rotating shafts 4 are equidistantly disposed between the first limiting ring body 1 and the second limiting ring body 2 via bearings, and the plurality of rotating shafts 4 are arranged in a circular array centered on the center of the first limiting ring body 1. A plurality of limiting members 5 for limiting the position of the packaging bag are equidistantly disposed on the rotating shafts 4. The first limiting ring body 1 is provided with a driving member 6 for rotating the rotating shafts 4. The limiting members 5 enable the extruded plastic to be blown in a limited manner, thereby limiting the packaging bag into a cylindrical shape, thereby forming the packaging bag.

[0014] Please continue reading Figures 1 to 3 As shown, in one embodiment of the present invention, the limiting member 5 includes a clamp 51. A plurality of the clamps 51 are equidistantly mounted on the rotating shaft 4. Limiting rods 52 are connected to the clamps 51. The limiting rods 52 are staggered on the rotating shaft 4. Rotation of the rotating shaft 4 enables the limiting rods 52 to rotate, thereby adjusting the angle of the limiting rods 52, facilitating the molding of the packaging bag into cylindrical shapes with different diameters.

[0015] Please continue reading Figure 1 and Figure 2As shown, in one embodiment of the present invention, the driving member 6 includes a driving motor 61. The driving motor 61 is provided at the upper left end of the first limiting ring body 1 for driving the leftmost rotating shaft 4 to rotate. A gear 62 is provided at the upper end of the rotating shaft 4. The gears 62 are connected to each other via a toothed belt 63. The driving motor 61 can drive the leftmost rotating shaft 4 to rotate, thereby driving the gears 62 to rotate. Through the connection of the toothed belt 63, the rotation of multiple gears 62 is achieved, thereby achieving the rotation of multiple rotating shafts 4.

[0016] The driving motor in the present invention is prior art, which is already clearly understood by those skilled in the art and will not be described in detail here.

[0017] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention should fall within the scope of the present invention.

Claims

1. A packaging bag tensioning and forming device, characterized in that: It includes a first limiting ring body and a second limiting ring body, the first limiting ring body and the second limiting ring body are connected via a connecting rod, the first limiting ring body and the second limiting ring body are arranged up and down, a plurality of rotating shafts are arranged at equal distances between the first limiting ring body and the second limiting ring body via bearings, and the plurality of rotating shafts are arranged in a circular array with the center of the first limiting ring body as the center, a plurality of limiting parts for limiting packaging bags are arranged at equal distances on the rotating shaft, and a driving part for driving the rotating shaft to rotate is provided on the first limiting ring body.

2. The packaging bag tensioning and forming device according to claim 1, characterized in that: The limiting member includes a hoop, a plurality of the hoop is sleeved on the rotating shaft at equal distances, a limiting rod is connected to the hoop, and the limiting rods on the plurality of rotating shafts are staggered.

3. The packaging bag tensioning and forming device according to claim 1, characterized in that: The driving member includes a driving motor. The driving motor for driving the leftmost rotating shaft is provided on the left end of the first limiting ring body. A gear is provided on the upper end of the rotating shaft, and the gears are connected to each other via a toothed belt.

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