Packaging bag expanding assembly

Abstract

The utility model provides a packaging bag expanding assembly which comprises a rotating beam, a rotating shaft, a rotating shaft and a rotating shaft. The bag expanding structure comprises a first bag expanding arm and a second bag expanding arm which are hinged to the rotating beam, the first bag expanding arm and the second bag expanding arm are in linkage connection, a connecting rod is fixed to the bottom of the first bag expanding arm and the bottom of the second bag expanding arm, and a bag expanding plate is fixed to the tail end of the connecting rod; the driving structure comprises a pen-shaped air cylinder, the tail end of the pen-shaped air cylinder is fixedly connected to a hinge seat on the rotating beam in a hinged mode, and an air cylinder rod of the pen-shaped air cylinder is connected with the second bag expanding arm in a hinged mode. The bag expanding assembly is simple in structure, automatic external expansion of the opening part of the packaging bag can be achieved, automatic loading of the packaging bag is facilitated, and the material loading efficiency and the overall packaging quality are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the field of food packaging, and particularly to a bag expanding assembly for a packaging bag. Background Art

[0002] In the field of automated packaging, the expansion of the opening of a packaging bag is a key step, which directly affects the loading efficiency of materials (such as hot pot base) and the sealing quality of the packaging. Traditional packaging machines only have a grasping mechanism and a feeding mechanism. The grasping mechanism includes two suction cups. After the grasping mechanism grabs the packaging bag, the suction cups adsorb both sides of the packaging bag to separate the two sides of the packaging bag. After separation, the materials are loaded through the feeding mechanism. However, when the suction cups adsorb the packaging bag, some areas of the packaging bag may retract, resulting in a smaller opening, making it difficult to ensure the consistency of each bag expansion. The feeding mechanism cannot accurately feed the materials, affecting the overall quality of the packaging and the uniform distribution of the materials. Utility Model Content

[0003] Aiming at the deficiencies in the prior art, the present invention provides a bag expanding assembly for a packaging bag. The bag expanding assembly has a simple structure, can realize the automatic external expansion of the opening of the packaging bag, ensure the consistency of each bag expansion, prevent the two sides of the packaging bag from retracting, facilitate the automatic loading of the packaging bag, and significantly improve the loading efficiency of the materials and the overall quality of the packaging.

[0004] To achieve the above object, the present invention adopts the following technical solution: A bag expanding assembly for a packaging bag, comprising:

[0005] A rotating beam, with a positioning pin fixed at one end of the rotating beam;

[0006] A bag expanding structure, which includes a first bag expanding arm and a second bag expanding arm hinged on the rotating beam. The first bag expanding arm and the second bag expanding arm are linked. Connecting rods are fixed at the bottoms of the first bag expanding arm and the second bag expanding arm, and a bag expanding plate is fixed at the end of the connecting rods.

[0007] A driving structure, including a pen-shaped cylinder. The end of the pen-shaped cylinder is hinged and connected to a hinge seat fixed on the rotating beam, and the cylinder rod of the pen-shaped cylinder is hinged and connected to the second bag expanding arm.

[0008] Further, the tops of the first bag expanding arm and the second bag expanding arm are fixedly connected by a return spring.

[0009] Further, a first linkage rod and a second linkage rod are respectively hinged on the first bag expanding arm and the second bag expanding arm, and the first linkage rod is hinged and connected to the second linkage rod.

[0010] Further, the bag expanding plate includes a connecting portion and an inclined portion.

[0011] Further, a connecting pin is fixed in each of the first bag-expanding arm and the second bag-expanding arm. A rotating plate is rotatably connected to the connecting pin, and the cylinder rod of the pen-shaped cylinder is fixedly connected to the rotating plate.

[0012] Further, the return spring is fixed between the connecting pins of the first bag-expanding arm and the second bag-expanding arm.

[0013] Further, the connecting portion of the bag-expanding plate is fixedly connected to the connecting rod by screws.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The bag-expanding assembly has a simple structure, can realize the automatic external expansion of the opening part of the packaging bag, is convenient for automatically loading materials into the packaging bag, and significantly improves the efficiency of material loading and the overall quality of packaging;

[0016] 2. Through the pen-shaped cylinder of the driving structure, by using the pen-shaped cylinder as the driving force, it can provide stable and adjustable power output, ensuring the smoothness and reliability of the bag-expanding process can be achieved;

[0017] 3. A return spring and a linkage rod are connected between the first bag-expanding arm and the second bag-expanding arm, so that the second bag-expanding arm can drive the first bag-expanding arm to rotate when rotating, thereby realizing the bag-expanding of the packaging bag and facilitating the filling of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural diagram of the present invention;

[0019] Figure 2 is a structural diagram of the present invention in another direction;

[0020] Figure 3 is a structural diagram of the present invention in a top view direction;

[0021] In the figure: 1, rotating beam; 2, positioning pin; 3, first bag-expanding arm; 4, second bag-expanding arm; 5, connecting rod; 6, bag-expanding plate; 7, pen-shaped cylinder; 8, hinge seat; 9, cylinder rod; 10, return spring; 11, first linkage rod; 12, second linkage rod; 13, connecting portion; 14, inclined portion; 15, rotating plate; 16, connecting pin; 17, screw; DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] As Figures 1-3 shown, a packaging bag bag-expanding assembly includes:

[0024] A rotating beam 1, with a positioning pin 2 fixed at one end of the rotating beam 1;

[0025] An expanding bag structure, the expanding bag structure includes a first expanding bag arm 3 and a second expanding bag arm 4 hinged on a rotating beam 1, the first expanding bag arm 3 and the second expanding bag arm 4 are linked and connected, a connecting rod 5 is fixed at the bottoms of the first expanding bag arm 3 and the second expanding bag arm 4, and an expanding bag plate 6 is fixed at the end of the connecting rod 5;

[0026] A driving structure, including a pen-shaped cylinder 7, the end of the pen-shaped cylinder 7 is hinged and connected to a hinge seat 8 fixed on the rotating beam 1, and the cylinder rod 9 of the pen-shaped cylinder 7 is hinged and connected to the second expanding bag arm 4.

[0027] The process of using the present utility model is as follows. First, install the rotating beam 1 on the rotating disk of the packaging machine. A corner cylinder can be fixed in the middle of the rotating disk. The rotating beam 1 is fixed on the corner cylinder through the positioning pin 2 thereon. After the grasping mechanism of the packaging machine grasps the packaging bag, the left and right sides of the packaging bag are adsorbed through the suction cups on both sides of the grasping mechanism, so that the opening of the packaging bag is opened. Subsequently, the expanding bag assembly of the present utility model starts to act. Specifically, when acting, first reset the corner cylinder so that the expanding bag structure moves to directly above the packaging bag, and then start the corner cylinder. While the rotating beam 1 rotates, it starts to descend, so that the expanding bag plates 6 on the first expanding bag arm 3 and the second expanding bag arm 4 descend and enter the packaging bag. At this time, the cylinder rod 9 of the pen-shaped cylinder 7 extends, and the distance between the expanding bag plates 6 increases, and then the material can be loaded into the packaging bag through the feeding mechanism of the packaging machine.

[0028] Further, the tops of the first expanding bag arm 3 and the second expanding bag arm 4 are fixedly connected through a return spring 10. Specifically, by fixing the return spring 10 at the tops of the first expanding bag arm 3 and the second expanding bag arm 4, the linkage of the two expanding bag arms can be realized. When the pen-shaped cylinder 7 drives the second expanding bag arm 4 to rotate, the first expanding bag arm 3 can also rotate under the action of the return spring 10.

[0029] Further, a first linkage rod 11 and a second linkage rod 12 are respectively hinged and connected to the first expanding bag arm 3 and the second expanding bag arm 4, and the first linkage rod 11 is hinged and connected to the second linkage rod 12. Specifically, by respectively hinging and connecting the first linkage rod 11 and the second linkage rod 12 to the first expanding bag arm 3 and the second expanding bag arm 4, even when the return spring 10 fails, the linkage of the first expanding bag arm 3 and the second expanding bag arm 4 can be realized through the two linkage rods.

[0030] Further, the expanding bag plate 6 includes a connecting portion 13 and an inclined portion 14. Specifically, the expanding bag plate 6 of the present utility model includes a connecting portion 13 and an inclined portion 14, and is fixedly connected to the connecting rod 5 through the connecting portion 13 and a screw 17.

[0031] Furthermore, a connecting pin 16 is fixed in each of the first bag-expanding arm 3 and the second bag-expanding arm 4. A rotating plate 15 is rotatably connected to the connecting pin 16, and the cylinder rod 9 of the pen-shaped cylinder 7 is fixedly connected to the rotating plate 15. Specifically, in the present utility model, a connecting pin 16 is fixed on each of the two bag-expanding arms, and the return spring 10 is fixed between the two connecting pins 16, which is more convenient for installation. In addition, a rotating plate 15 is rotatably connected to the connecting pin 16 of the second bag-expanding arm 4. When the cylinder rod 9 extends, the end of the cylinder rod 9 may deviate by a certain angle. Since it is connected to the rotating plate 15, the deflection of the cylinder rod 9 will not be affected.

[0032] Furthermore, the connecting portion 13 of the bag-expanding plate 6 is fixedly connected to the connecting rod 5 by screws 17. Since the connecting portion 13 of the bag-expanding plate 6 is fixedly connected to the connecting rod 5 by screws 17, the bag-expanding plate 6 can be replaced according to different specifications of the packaging bags, making the adaptability of the present utility model wider.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A bag expanding assembly for packaging bags, characterized in that, Comprising: A rotating beam, with a positioning pin fixed at one end of the rotating beam; An expanding bag structure, which includes a first expanding bag arm and a second expanding bag arm hinged on the rotating beam. The first expanding bag arm and the second expanding bag arm are linked and connected. A connecting rod is fixed at the bottom of the first expanding bag arm and the second expanding bag arm, and an expanding bag plate is fixed at the end of the connecting rod; A driving structure, including a pen-shaped cylinder. The end of the pen-shaped cylinder is hinged and connected to a hinge seat fixed on the rotating beam, and the cylinder rod of the pen-shaped cylinder is hinged and connected to the second expanding bag arm.

2. The bag expanding assembly according to claim 1, wherein: The tops of the first expanding bag arm and the second expanding bag arm are fixedly connected by a return spring.

3. The bag expanding assembly according to claim 2, wherein: A first linkage rod and a second linkage rod are respectively hinged and connected to the first expanding bag arm and the second expanding bag arm, and the first linkage rod is hinged and connected to the second linkage rod.

4. The bag expanding assembly of a packaging bag according to claim 3, wherein: The expanding bag plate includes a connecting portion and an inclined portion.

5. The bag expanding assembly according to claim 4, wherein: A connecting pin is fixed in each of the first expanding bag arm and the second expanding bag arm, and a rotating plate is rotatably connected to the connecting pin. The cylinder rod of the pen-shaped cylinder is fixedly connected to the rotating plate.

6. The bag expanding assembly according to claim 5, wherein: The return spring is fixed between the connecting pins of the first expanding bag arm and the second expanding bag arm.

7. The bag expanding assembly according to claim 6, wherein: The connecting portion of the expanding bag plate is fixedly connected to the connecting rod by screws.

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