Packaging bag tracking and heat sealing equipment

Abstract

The utility model discloses a packaging bag tracking heat sealing device, which belongs to the technical field of packaging equipment and comprises a conveying belt used for conveying packaging bags, a conveying belt is arranged above the conveying belt, a plurality of heat sealing components are arranged on the conveying belt at intervals, and the distance between two adjacent heat sealing components is matched with the distance between two packaging bags. The conveying belt is driven by a motor. In the process that the conveying belts convey the packaging bags, the multiple heat sealing components on the conveying belt on the upper portion correspond to bag openings of the packaging bags on the lower portion one by one, the heat sealing components move along with movement of the packaging bags on the conveying belts, tracking heat sealing of the packaging bags is completed in the moving process of the heat sealing components, and assembly line work is achieved. The packaging bag heat sealing device is simple and practical in structure, high in working efficiency and safety coefficient and low in labor intensity, the packaging bag on the conveying belt drives the heat sealing component and the conveying belt to move, external power is not needed, assembly line work of packaging bag heat sealing can be achieved, and the packaging bag heat sealing device is particularly suitable for sealing work of packaging bags in batches.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging equipment, in particular to a packaging bag tracking heat sealing device. Background Art

[0002] After the bag is filled with product, it needs to be sealed. There are two main methods for sealing bags: heat sealing and iron sealing. Heat sealing involves heating a saw blade over fire and rolling up the plastic film. Iron sealing involves heating an iron, placing an iron plate or other hard object at the bottom of the bag, and pressing down with the back of the iron.

[0003] Currently, both heat sealing and iron sealing rely on manual heat sealing, which has the following drawbacks: The time, temperature, and speed of manual heat sealing are inconsistent. Excessively high temperatures or prolonged times can easily lead to brittle seals, resulting in warping or brittle fracture. Excessively low temperatures or short times can easily lead to incomplete heat sealing and poor sealing. Excessively high speeds, such as pulling the iron before heating is complete, can also result in incomplete heat sealing and poor sealing. Furthermore, manual heat sealing is inefficient, labor-intensive, and prone to burns, posing a safety hazard.

[0004] Furthermore, if a heat sealer is used on the production line, since the packaging bag takes 4 seconds to seal, the production line must be paused for 4 seconds, which greatly affects production efficiency. Currently, to increase production, a double roller conveyor is used to add a heat sealer to heat seal simultaneously, and then integrate it into the main production line, which increases equipment investment costs.

[0005] In view of this, it is necessary to develop a simple, efficient, safe and low-cost sealing device to replace manual sealing. Utility Model Content

[0006] In order to solve the above problems, the utility model provides a packaging bag tracking heat sealing device.

[0007] In order to achieve the above purpose, the technical solutions adopted by the present utility model are as follows:

[0008] A packaging bag tracking heat-sealing device includes a conveyor belt for conveying packaging bags, a conveyor belt is provided above the conveyor belt, and a plurality of heat-sealing components for sealing the bag openings of the packaging bags are provided at intervals on the conveyor belt, and the distance between two adjacent heat-sealing components matches the distance between the two packaging bags; the conveyor belt is driven by a motor.

[0009] Furthermore, the conveyor belt includes two chains arranged in parallel, the two chains are respectively engaged with the sprockets at both ends, the sprockets on both sides are connected by a horizontal connecting shaft, and the two ends of the heat-sealed component are connected to the chains on both sides; the sprockets on both sides and the two ends of the connecting shaft are respectively arranged on two parallel support plates, and the two support plates are respectively arranged on both sides of the conveyor belt.

[0010] Furthermore, the heat-sealing component includes a fixed plate, a carbon rod and a heating plate. There are two fixed plates and two carbon rods, which are respectively arranged at the two ends of the heating plate. The two fixed plates are respectively connected to the chains on both sides. The carbon rod that can be electrified is connected to the end of the heating plate, and the heating plate is connected to the fixed plate; the length direction of the heating plate is not less than the width of the bag opening of the packaging bag, and the lower end of the heating plate can be pressed against the bag opening of the packaging bag.

[0011] Furthermore, there are two heating plates arranged side by side in a plane. The heating plates are rectangular plates. A connecting rod is provided through the middle of the heating plates. The two ends of the connecting rod are respectively connected to the fixed plates on both sides. The conductive heads at both ends of the heating plates are electrically connected to the carbon rods.

[0012] Furthermore, vertical plates are provided on both sides of the fixed plate, one side vertical plate is connected to the chain, and its top edge is an arc-shaped edge matching the chain link, and the side vertical plate is provided with two connecting holes matching the chain links on the chain; the other side vertical plate is connected to the end of the connecting rod, and the side vertical plate is provided with a connecting hole matching the connecting rod.

[0013] Furthermore, a busbar is provided below the conveyor belt, the busbar is parallel to the conveyor belt and connected to the support plate, and the busbar is used to supply power to the carbon rod that moves above the busbar; the carbon rod is arranged in a sleeve, and the sleeve is connected to the end of the heating plate. A spring is provided in the upper part of the inner cavity of the sleeve, and the upper end of the carbon rod abuts the lower end of the compressed spring, and the lower end of the carbon rod can abut the busbar.

[0014] Furthermore, the heating plate is connected to the carbon rod via a lifting mechanism, and a sliding groove is provided on the side of the carbon rod for lifting the heating plate.

[0015] Furthermore, the lifting mechanism is an electric push rod, a hydraulic rod or a cylinder, and the push rod of the lifting mechanism is connected to the upper end of the heating plate.

[0016] Furthermore, a driving wheel and a driven wheel are respectively provided at both ends of the conveyor belt, and the axle of the driving wheel is driven by a motor; the axles of the driving wheel and the driven wheel are arranged on a frame, and a plurality of rollers are provided on the upper back side of the conveyor belt, and the plurality of rollers are arranged in parallel at intervals, and the length direction of the rollers is perpendicular to the running direction of the conveyor belt.

[0017] Furthermore, a plurality of tensioning wheels are provided on the lower outer surface of the conveyor belt, and the plurality of tensioning wheels are arranged at intervals and close to the driving wheel and the driven wheel at both ends respectively.

[0018] Compared with the prior art, the technical progress achieved by this utility model is:

[0019] The utility model conveys packaging bags via a conveyor belt, wherein multiple heat-sealing components on the upper conveyor belt correspond one by one to the bag openings of the packaging bags on the lower conveyor belt. The heat-sealing components move as the packaging bags move, completing the heat-sealing operation on the packaging bags during movement without the need for the conveyor belt to stop, thereby enabling tracking heat-sealing of the packaging bags. The utility model has a simple and practical structure, improves work efficiency and operational safety, and reduces labor intensity for workers. The packaging bags on the conveyor belt drive the heat-sealing components and the conveyor belt to move, eliminating the need for external power or additional heat-sealing equipment, resulting in low cost. The utility model can realize assembly line operation of heat-sealing packaging bags, and is particularly suitable for sealing batch packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0021] In the attached figure:

[0022] Figure 1 A schematic structural diagram of a packaging bag tracking heat sealing device provided by an embodiment of the present utility model;

[0023] Figure 2 for Figure 1 A top view of the tracking heat sealing equipment for the middle packaging bag;

[0024] Figure 3 This is a schematic structural diagram of a heat-sealing component in an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the installation of the carbon rod in the embodiment of the present utility model;

[0026] Figure 5 This is a structural diagram of a fixed plate in an embodiment of the present utility model;

[0027] In the picture:

[0028] 1- conveyor belt, 11- driving wheel, 12- driven wheel; 2- conveyor belt, 20- chain, 21- sprocket, 22- connecting shaft; 3- heat sealing component, 31- fixed plate, 32- carbon rod, 33- heating plate, 34- vertical plate, 35- connecting hole, 36- connecting rod, 37- sleeve, 38- spring, 39- bottom plate; 4- motor; 5- support plate; 6- frame; 7- roller; 8- tensioning wheel; 9- reducer; 10- sliding contact line. DETAILED DESCRIPTION

[0029] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The following embodiments of the present invention will be described in conjunction with the accompanying drawings.

[0030] like Figure 1 、 Figure 2 The figure shows a packaging bag tracking heat-sealing device, comprising a conveyor belt 1 for conveying packaging bags. A conveyor belt 2 is positioned above the conveyor belt 1. A plurality of heat-sealing components 3 for sealing the bag openings are spaced apart on the conveyor belt 2, with the distance between adjacent heat-sealing components 3 matching the distance between the two packaging bags. The conveyor belt 1 is driven by a motor 4. After the product is placed in the packaging bag, the inner bag is bundled or tied and laid flat on the conveyor belt. The packaging bag moves forward with the conveyor belt, and the heat-sealing components precisely contact the bag openings. During the heat-sealing process, the conveyor belt continues to operate without stopping. The packaging bag also drives the heat-sealing components and the conveyor belt forward, completing the conveyor operation without the need for external power. This solution has a simple structure and low production cost. It does not require additional heat-sealing equipment, improves sealing efficiency and operational safety, reduces labor intensity, and reduces equipment costs, enabling continuous sealing of batches of packaging bags.

[0031] In a specific embodiment of the present invention, Figure 2 As shown, the conveyor belt 2 includes two parallel chains 20, each meshing with a corresponding sprocket 21 at each end. The sprockets 21 on opposite sides are connected by a horizontal connecting shaft 22. The heat-sealing component 3 is connected to the chains 20 at both ends. The sprockets 21 and the connecting shaft 22 at both ends are respectively mounted on two parallel support plates 5, which are respectively arranged on both sides of the conveyor belt 1. When the first package bag contacts the heat-sealing component, the heat-sealing component moves forward with the package bag during the heat-sealing process, simultaneously driving the chains on both sides to move synchronously, and then driving the other heat-sealing components to move synchronously, contacting the openings of subsequent packages one by one, achieving a continuous sealing operation.

[0032] As a preferred structure, Figure 3 、 4As shown, the heat-sealing component 3 includes a fixed plate 31, a carbon rod 32, and a heating plate 33. The fixed plate 31 and the carbon rod 32 are each two, and are respectively arranged at the ends of the heating plate 33. The two fixed plates 31 are respectively connected to the chains 20 on both sides. The carbon rod 32, which can be powered, is connected to the end of the heating plate 33. The heating plate 33 is connected to the fixed plate 31. The length of the heating plate 33 is not less than the width of the bag opening, and the lower end of the heating plate 33 can press against the bag opening. The heating plate 33 is a rectangular plate. A connecting rod 36 is provided through the middle of the heating plate 33. The ends of the connecting rod 36 are respectively connected to the fixed plates 31 on both sides. The conductive ends of the heating plate 33 are electrically connected to the carbon rod 32. With this heat-sealing component structure, as the chain runs, the heating plate can press against the bag opening to complete the heat-sealing operation.

[0033] When making specific Figure 5 As shown, vertical plates 34 are provided on both sides of the fixed plate 31. One side vertical plate 34 is connected to the chain, and its top edge is an arc-shaped edge that matches the chain link. The side vertical plate 34 is provided with two connecting holes 35 that match the chain links on the chain 20; the other side vertical plate 34 is connected to the end of the connecting rod 36, and the side vertical plate 34 is provided with a connecting hole 35 that matches the connecting rod 36. The fixed plate with this structure can connect the heating plate to the chain and move cyclically with the chains on both sides.

[0034] In a specific embodiment of the present invention, Figure 1 As shown, a busbar 10 is provided below the conveyor belt 2. The busbar 10 is parallel to the conveyor belt 1 and connected to the support plate 5. The busbar 10 is used to supply power to the heat-sealing component 3 that moves to the lower part of the chain 20. When the heat-sealing component on the chain 20 moves to the side opposite to the conveyor belt, the carbon rod 32 of the heat-sealing component will contact the busbar 10. Then, the carbon rod 32 is energized and energizes the heating plate 33. The heating plate 33, which is pressed against the bag opening, generates heat. During the bag packaging process, the temperature of the heating plate 33 gradually increases, meeting the heat-sealing time and the required temperature of the bag, gradually heating and bonding the bag opening together to achieve the purpose of sealing.

[0035] When designing specifically, Figure 3 、 4As shown, the heating plates 33 are two rectangular plates connected in parallel. Carbon rods 32 on either side are electrically connected to the other ends of the two heating plates 33. The carbon rods 32 are mounted within a sleeve 37, which is connected to the ends of the heating plates 33. A spring 38 is provided within the upper portion of the inner cavity of the sleeve 37. The upper ends of the carbon rods 32 abut against the compressed lower ends of the springs 38, while the lower ends of the carbon rods 32 can abut against the busbar 10. The busbar 10 is mounted on a horizontal bottom plate 39 inside the support plate 5. The springs 38 hold the carbon rods 32 against the busbar 102, ensuring that they remain energized and provide power to the heating plates 33.

[0036] To further optimize the above solution, the heating plate 33 is connected to the carbon rod 32 via a lifting mechanism (not shown). A chute is provided on the side of the carbon rod 32 for raising and lowering the heating plate 33. A photoelectric switch (not shown) is also provided at the bottom of the carbon rod. When the packaging bag passes under the carbon rod, the lifting mechanism is activated. The lifting mechanism is an electric push rod, hydraulic rod, or cylinder, and the push rod of the lifting mechanism is connected to the upper end of the heating plate 33. This lifting mechanism can promptly drive the heating plate to press the bag opening against the conveyor belt when the packaging bag passes under the heating plate.

[0037] In a specific embodiment of the present invention, Figure 1 、 Figure 2 As shown, the conveyor belt 1 is provided with a driving pulley 11 and a driven pulley 12 at each end. The axle of the driving pulley 11 is driven by a motor 4, the output shaft of which is connected to a reducer 9, the output shaft of which is coaxially fixed to the axle. The axles of the driving pulley 11 and the driven pulley 12 are mounted on a frame 6. Several rollers 7 are arranged in parallel and at intervals on the upper back surface of the conveyor belt 1. The rollers 7 have a length perpendicular to the direction of travel of the conveyor belt 1. Furthermore, the lower outer surface of the conveyor belt 1 is provided with multiple tensioning pulleys 8, which are arranged at intervals and close to the driving pulley 11 and the driven pulley 12 at each end. The rollers support the bags on the conveyor belt, and the tensioning pulleys keep the conveyor belt in a tensioned state, ensuring that the bag openings on the conveyor belt are in constant contact with the heat-sealing components. This prevents the bags from falling and separating from the heat-sealing components during conveyance, resulting in improper heat sealing.

[0038] To sum up, the utility model has a simple and compact structure, a high degree of mechanization, and a low production cost. During the transportation of the packaging bags on the conveyor belt, the packaging bags come into contact with the upper heat-sealing components to complete the heat-sealing, thereby driving the conveyor belt to run. Subsequently, the remaining heat-sealing components can come into contact with the corresponding packaging bags for heat sealing. No external power is required, and the tracking heat-sealing operation of batch packaging bags is realized. Compared with manual sealing operations, the sealing efficiency and operation safety factor are greatly improved, and the labor intensity of the staff is reduced. It is especially suitable for batch production.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalent features for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A packaging bag tracking heat sealing device, characterized by: It includes a conveyor belt for conveying packaging bags, a conveyor belt is provided above the conveyor belt, and a plurality of heat-sealing components for sealing the bag openings of the packaging bags are provided at intervals on the conveyor belt. The distance between two adjacent heat-sealing components matches the distance between two packaging bags; the conveyor belt is driven by a motor.

2. The packaging bag tracking heat sealing device according to claim 1, characterized in that: The conveyor belt includes two chains arranged in parallel, and the two chains are respectively engaged with the sprockets at both ends. The sprockets on both sides are connected by a horizontal connecting shaft. The two ends of the heat-sealed component are connected to the chains on both sides; the sprockets on both sides and the two ends of the connecting shaft are respectively arranged on two parallel support plates, and the two support plates are respectively arranged on both sides of the conveyor belt.

3. The packaging bag tracking heat sealing device according to claim 2, characterized in that: The heat-sealing component includes a fixed plate, a carbon rod and a heating plate. There are two fixed plates and two carbon rods, which are respectively arranged at the two ends of the heating plate. The two fixed plates are respectively connected to the chains on both sides. The carbon rod that can be energized is connected to the end of the heating plate, and the heating plate is connected to the fixed plate; the length direction of the heating plate is not less than the width of the bag opening of the packaging bag, and the lower end of the heating plate can be pressed against the bag opening of the packaging bag.

4. The packaging bag tracking heat sealing device according to claim 3, characterized in that: There are two heating plates, which are arranged side by side in a plane. The heating plates are rectangular plates. A connecting rod is provided through the middle of the heating plates. The two ends of the connecting rod are respectively connected to the fixed plates on both sides. The conductive heads at both ends of the heating plates are electrically connected to the carbon rods.

5. The packaging bag tracking heat sealing device according to claim 4, characterized in that: Vertical plates are provided on both sides of the fixed plate, one side vertical plate is connected to the chain, and its top edge is an arc-shaped edge that matches the chain link, and the side vertical plate is provided with two connecting holes that match the chain links on the chain; the other side vertical plate is connected to the end of the connecting rod, and the side vertical plate is provided with a connecting hole that matches the connecting rod.

6. The packaging bag tracking heat sealing device according to claim 5, characterized in that: A busbar is provided below the conveyor belt, which is parallel to the conveyor belt and connected to the support plate. The busbar is used to supply power to the carbon rod that travels above the busbar; the carbon rod is arranged in a sleeve, which is connected to the end of the heating plate. A spring is provided in the upper part of the inner cavity of the sleeve, and the upper end of the carbon rod abuts the lower end of the compressed spring, and the lower end of the carbon rod can abut the busbar.

7. The packaging bag tracking heat sealing device according to claim 3, characterized in that: The heating plate is connected to the carbon rod through a lifting mechanism, and a sliding groove for lifting the heating plate is provided on the side of the carbon rod.

8. The packaging bag tracking heat sealing device according to claim 7, characterized in that: The lifting mechanism is an electric push rod, a hydraulic rod or a cylinder, and the push rod of the lifting mechanism is connected to the upper end of the heating plate.

9. The packaging bag tracking heat sealing device according to any one of claims 1 to 8, characterized in that: A driving wheel and a driven wheel are respectively provided at both ends of the conveyor belt, and the axle of the driving wheel is driven by a motor; the axles of the driving wheel and the driven wheel are set on a frame, and a plurality of rollers are provided on the upper back side of the conveyor belt, and the plurality of rollers are arranged in parallel at intervals, and the length direction of the rollers is perpendicular to the running direction of the conveyor belt.

10. The packaging bag tracking heat sealing device according to claim 9, characterized in that: A plurality of tensioning wheels are provided on the lower outer surface of the conveyor belt. The plurality of tensioning wheels are arranged at intervals and are respectively close to the driving wheel and the driven wheel at both ends.

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