Sealing device for mouth of food bag

Abstract

The utility model discloses a sealing device for a food bag opening, and relates to the technical field of packaging bag sealing. The utility model provides a food bag opening sealing device which comprises a lower clamping plate, a first guide rod fixedly connected to the lower clamping plate, a lower extension plate slidably connected to the first guide rod, an upper clamping plate rotatably connected to the lower clamping plate, a second guide rod fixedly connected to the upper clamping plate, and an upper extension plate slidably connected to the second guide rod. Longitudinal symmetrical torsion springs are connected between the lower clamping plate and the upper clamping plate, heat sealing rollers are rotationally connected to the lower extending plate and the upper extending plate, and electric heating wires are fixedly connected into the heat sealing rollers. After the lower extension plate and the upper extension plate are opened, a worker puts a bag opening of a food bag between the lower extension plate and the upper extension plate, the lower extension plate and the upper extension plate are controlled to be closed to enable the heat sealing roller to be attached to the food bag, the food bag is pulled to move leftwards, and the heat sealing roller can seal the bag opening of the food bag in a hot melting mode.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bag sealing, in particular to a sealing device for a food bag opening. Background Art

[0002] With the acceleration of the pace of modern life, people's demand for convenient packaging is growing, especially for food packaging, which should not only ensure the freshness and safety of food, but also be easy to store and reuse. In daily life, many foods, such as snacks, dry goods, fresh fruits and vegetables, are often stored in soft plastic bags. However, when these food bags are opened, if they cannot be resealed effectively, air, moisture and microorganisms may enter the bags, causing food to deteriorate, lose flavor or breed bacteria, thereby affecting the quality and safety of food. Traditional food bag sealing methods are mainly based on heat sealing and mechanical clamping. Although mechanical clamping sealing can provide better sealing, it requires additional clips. When multiple food bags need to be sealed, multiple clips need to be used. In addition, if packaging bags of different sizes need to ensure the sealing effect, clips of different sizes need to be used, which is costly; and the existing heat sealing equipment is relatively large and inconvenient to use.

[0003] In order to solve the above problems, we propose a sealing device for the mouth of a food bag. The sealing device achieves fast and convenient sealing by adopting a simple clamping plate structure and can adapt to food bags of different sizes. Utility Model Content

[0004] In order to overcome the shortcomings of existing mechanical clamping seals, such as high cost, large heat-sealing equipment and inconvenient use, the utility model provides a sealing device for a food bag opening, which achieves fast and convenient sealing by adopting a simple splint structure and can adapt to food bags of different sizes.

[0005] The technical implementation scheme of the utility model is: a sealing device for the bag mouth of a food bag, comprising a lower clamping plate, a first guide rod is fixedly connected to the lower clamping plate, a lower extension plate is slidably connected to the first guide rod, an upper clamping plate is rotatably connected to the lower clamping plate, a second guide rod is fixedly connected to the upper clamping plate, the second guide rod is slidably connected to the upper extension plate, a longitudinally symmetrical torsion spring is connected between the lower clamping plate and the upper clamping plate, heat-sealing rollers are rotatably connected to the lower extension plate and the upper extension plate, electric heating wires are fixedly connected to the heat-sealing rollers, a leveling component for leveling the food bag is provided on the lower extension plate and the upper extension plate, and an adjustment component is provided on the upper clamping plate and the lower extension plate, and the adjustment component is used to adjust the length to adapt to food bags of different sizes.

[0006] Furthermore, both the lower splint and the upper splint are provided with extended gripping plates.

[0007] Furthermore, the heat sealing roller is provided with grooves which are equidistantly distributed around the circumference.

[0008] Furthermore, the leveling assembly includes evenly spaced smoothing rollers, which are rotatably connected to the side of the lower extension plate and the upper extension plate that are close to each other. The lower extension plate and the upper extension plate are slidably connected to sliding rods, and the side of the sliding rods that are close to each other is fixedly connected to a pressing plate. A return spring is connected between the adjacent pressing plates of the lower extension plate and the upper extension plate.

[0009] Furthermore, the adjustment component includes an electric push rod, which is fixedly connected to the upper clamping plate, the telescopic end of the electric push rod is fixedly connected to the upper extension plate, the lower extension plate is fixedly connected to a connecting rail, a sliding block is slidably connected in the connecting rail, and the sliding block is fixedly connected to the upper extension plate.

[0010] Furthermore, the connecting rail is arc-shaped to adapt to the movement trajectory of the upper extension plate when opening and closing.

[0011] The utility model has the following advantages: 1. After the lower extension plate and the upper extension plate are opened, the staff puts the bag mouth of the food bag between the lower extension plate and the upper extension plate, controls the lower extension plate and the upper extension plate to close so that the heat sealing roller fits the food bag, and by pulling the food bag to move to the left, the heat sealing roller can heat-melt seal the bag mouth of the food bag.

[0012] 2. When the food bag moves to the left, the smoothing roller can flatten the food bag before the heat sealing roller to avoid wrinkles on the food bag, while the pressing plate flattens the hot melt area after the heat sealing roller to avoid unevenness at the heat sealing area.

[0013] 3. The extension and shortening of the electric push rod will control the lower extension plate and the upper extension plate to slide left and right for extension and retraction, thereby adjusting the length of the device to adapt to food bags of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the first guide rod, the second guide rod and other components of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the heat sealing roller and the heating wire of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the sliding rod, the pressing plate, the return spring and other components of the utility model.

[0018] Figure 5 It is a three-dimensional structural schematic diagram of the electric push rod, connecting rail and other components of the utility model.

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the connecting rail, the sliding block and the upper extension plate of the utility model.

[0020] In the above figures: 1: lower clamping plate, 101: lower extension plate, 102: first guide rod, 2: upper clamping plate, 201: upper extension plate, 202: second guide rod, 3: torsion spring, 4: heat sealing roller, 5: heating wire, 6: smoothing roller, 7: sliding rod, 8: pressing plate, 9: return spring, 10: electric push rod, 11: connecting rail, 12: sliding block. DETAILED DESCRIPTION

[0021] 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.

[0022] Embodiment 1: A sealing device for a food bag, such as Figure 1-Figure 6 As shown, it includes a lower clamping plate 1, a lower extension plate 101, a first guide rod 102, an upper clamping plate 2, an upper extension plate 201, a second guide rod 202, a torsion spring 3, a heat sealing roller 4, an electric heating wire 5, a leveling assembly and an adjustment assembly. The rear side of the lower clamping plate 1 is fixedly connected to the first guide rod 102, the lower extension plate 101 is slidably connected to the first guide rod 102, the right part of the lower clamping plate 1 is rotatably connected to the upper clamping plate 2, the right parts of the lower clamping plate 1 and the upper clamping plate 2 are both provided with an extension grab plate, the rear side of the upper clamping plate 2 is fixedly connected to the second guide rod 202, and the second guide An upper extension plate 201 is slidably connected to the rod 202, and a front-to-rear symmetrical torsion spring 3 is connected between the lower clamping plate 1 and the upper clamping plate 2. The lower extension plate 101 and the left part of the upper extension plate 201 are rotatably connected to a heat sealing roller 4, and the heat sealing roller 4 is provided with grooves equidistantly distributed around the circumference. A heating wire 5 is fixedly connected inside the heat sealing roller 4. A leveling component for leveling the food bag is provided on the lower extension plate 101 and the upper extension plate 201, and an adjustment component is provided on the upper clamping plate 2 and the lower extension plate 101. The adjustment component is used to adjust the length to adapt to food bags of different sizes.

[0023] When using the device, the staff presses the upper and lower extension gripping plates to control the lower clamping plate 1 and the upper clamping plate 2 to rotate and open outward, the torsion spring 3 is deformed, the lower clamping plate 1 and the upper clamping plate 2 rotate and open outward, driving the lower extension plate 101 and the upper extension plate 201 to rotate and open outward, and then the staff puts the bag mouth of the food bag to be sealed between the lower extension plate 101 and the upper extension plate 201. After placing it, the staff relaxes the extension gripping plates, and under the action of the torsion spring 3 resetting, the lower clamping plate 1 and the upper clamping plate 2 rotate and reset inward, thereby driving the lower extension plate 101 and the upper extension plate 201 to rotate inward. The upper and lower heat-sealing rollers 4 are in contact with the bag opening of the food bag, and the heat-sealing rollers 4 are heated by the electric heating wire 5. Then the staff pulls the food bag to move to the left. When the food bag moves to the left, the heat-sealing rollers 4 can perform hot-melt sealing on the bag opening of the food bag. The heat-sealing rollers 4 can increase the friction between the food bag and the heat-sealing rollers 4 to prevent the rotating heat-sealing rollers 4 from slipping and affecting the heat-sealing effect. When the food bag moves to the left for heat sealing, the leveling component can level the food bag on the left and right sides of the heat-sealing rollers 4 to ensure the flatness of the heat sealing of the food bag, and the adjusting component can adjust the length of the device to adapt to food bags of different sizes.

[0024] Embodiment 2: Based on embodiment 1, Figure 1 , Figure 2 and Figure 4 As shown, the leveling assembly includes a leveling roller 6, a sliding rod 7, a pressing plate 8 and a reset spring 9. The sides of the lower extension plate 101 and the upper extension plate 201 that are close to each other are rotatably connected with three equidistantly distributed leveling rollers 6, the left parts of the lower extension plate 101 and the upper extension plate 201 are slidably connected with the sliding rod 7, the sides of the upper and lower sliding rods 7 that are close to each other are fixedly connected with the pressing plate 8, a reset spring 9 is connected between the upper pressing plate 8 and the upper extension plate 201, and the same reset spring 9 is connected between the lower pressing plate 8 and the lower extension plate 101.

[0025] When using the device, after the mouth of the food bag is placed between the lower extension plate 101 and the upper extension plate 201, the inward rotation of the lower extension plate 101 and the upper extension plate 201 will also drive the pressing plates 8 and the smoothing rollers 6 on the upper and lower sides to move inward to clamp the food bag. When the food bag moves to the left, the smoothing rollers 6 can flatten the food bag to prevent wrinkles in the food bag from entering the heat sealing rollers 4 and affecting the heat sealing flatness. Under the action of the rebound of the reset spring 9, the sliding rod 7 can drive the pressing plate 8 to clamp the other side of the food bag. When the food bag heat-sealed by the heat sealing rollers 4 enters the upper and lower pressing plates 8, the hot melt area is flattened by the pressing plates 8 to avoid unevenness in the heat sealing area.

[0026] like Figure 1 , Figure 5 and Figure 6As shown, the adjustment component includes an electric push rod 10, a connecting rail 11 and a sliding block 12. The electric push rod 10 is fixedly connected to the front side of the upper clamping plate 2. The telescopic end of the electric push rod 10 is fixedly connected to the upper extension plate 201. The left front side of the lower extension plate 101 is fixedly connected to the connecting rail 11. The connecting rail 11 is arc-shaped and is used to adapt to the moving trajectory of the upper extension plate 201 when it opens and closes. The sliding block 12 is slidably connected to the connecting rail 11, and the sliding block 12 is fixedly connected to the upper extension plate 201.

[0027] When the length of the device needs to be adjusted, the staff controls the electric push rod 10 to extend, and the extension of the electric push rod 10 drives the upper extension plate 201 to slide and extend to the left on the second guide rod 202. Under the action of the connecting rail 11 and the sliding block 12, the lower extension plate 101 will also synchronously slide and extend to the left on the first guide rod 102. The extended length of the lower extension plate 101 and the upper extension plate 201 is adjusted according to the size of the food bag, thereby achieving the purpose of adapting to food bags of different sizes.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A sealing device for a food bag mouth, characterized in that: The invention comprises a lower clamping plate (1), a first guide rod (102) being fixedly connected to the lower clamping plate (1), a lower extension plate (101) being slidably connected to the first guide rod (102), an upper clamping plate (2) being rotatably connected to the lower clamping plate (1), a second guide rod (202) being fixedly connected to the upper clamping plate (2), an upper extension plate (201) being slidably connected to the second guide rod (202), and a connecting rod (1) and a connecting rod (2) being connected between the lower clamping plate (1) and the upper clamping plate (2). A longitudinally symmetrical torsion spring (3) is provided. The lower extension plate (101) and the upper extension plate (201) are both rotatably connected to a heat sealing roller (4). The heat sealing roller (4) is fixedly connected to an electric heating wire (5). The lower extension plate (101) and the upper extension plate (201) are provided with a leveling component for leveling the food bag. The upper clamping plate (2) and the lower extension plate (101) are provided with an adjustment component for adjusting the length to adapt to food bags of different sizes.

2. A food bag sealing device according to claim 1, characterized in that: Both the lower clamping plate (1) and the upper clamping plate (2) are provided with extended grabbing plates.

3. A food bag sealing device according to claim 2, characterized in that: The heat sealing roller (4) is provided with grooves which are evenly spaced around the circumference.

4. A food bag mouth sealing device according to claim 3, characterized in that: The leveling assembly comprises smoothing rollers (6) which are evenly distributed, and the evenly distributed smoothing rollers (6) are rotatably connected to the side of the lower extension plate (101) and the upper extension plate (201) which are close to each other. The lower extension plate (101) and the upper extension plate (201) are both slidably connected to sliding rods (7), and the side of the sliding rods (7) which are close to each other is fixedly connected to a pressing plate (8), and a return spring (9) is connected between the adjacent pressing plates (8) of the lower extension plate (101) and the upper extension plate (201).

5. A food bag mouth sealing device according to claim 4, characterized in that: The adjustment component comprises an electric push rod (10), the electric push rod (10) is fixedly connected to the upper clamping plate (2), the telescopic end of the electric push rod (10) is fixedly connected to the upper extension plate (201), the lower extension plate (101) is fixedly connected to a connecting rail (11), a sliding block (12) is slidably connected inside the connecting rail (11), and the sliding block (12) is fixedly connected to the upper extension plate (201).

6. A food bag sealing device according to claim 5, characterized in that The connecting rail (11) is arc-shaped and is used to adapt to the movement track of the upper extension plate (201) when opening and closing.

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