Heat-sealing transmission device of air column inflator

Abstract

The utility model relates to a heat-seal conveying device of an air column inflator. The heat-seal conveying device comprises a rack, an air nozzle, a conveying assembly, a hot roller assembly and a driving mechanism. The upper film drawing belt and the lower film drawing belt which are opposite up and down and are distributed in parallel are adopted in the conveying assembly, and the problem that the film is prone to slipping or dislocation in the conveying process is effectively solved. The driving mechanism achieves synchronous movement of all the assemblies through a servo motor and gear transmission, and stable conveying and heat sealing quality of the thin film are guaranteed. The hot rolling wheel assembly is composed of a heating wheel and a silica gel wheel, and up-down opposite heat sealing treatment is formed. In addition, the device is further provided with a cooling column for cooling the silica gel wheel, and a metering wheel and a coded disc optocoupler assembly achieve accurate metering and feedback of the moving distance. The auxiliary support top plate can be locked and released through the handle, and the thin film can be taken out and placed in conveniently, and the device can be overhauled conveniently. The device is reasonable in design, and the heat sealing quality and the production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a heat sealing transmission device of air column inflator. BACKGROUND

[0002] The air column inflator is used for inflating and sealing a film. The air column inflator mainly comprises a rack, a roller, a guide rod, an inflation guide rod and a heat sealing transmission module, the roller is used for conveying the film, the film passes through the guide rod and the inflation guide rod in sequence and then enters the heat sealing transmission module, so that the guide rod can cooperate with the roller to realize orderly conveying of the film, the guide rod cooperates with the inflation guide rod to inflate the film, and then the film is heat sealed by the heat sealing transmission module and orderly discharged.

[0003] A Chinese utility model patent with publication number CN206244135U discloses a set of conveying devices and air cushion film machines, wherein the conveying device mainly comprises a seat body, two sets of conveying assemblies, a motor, two sets of pressing assemblies and a gear member. Fig. 1 The connection relationship between the components can be clearly seen.

[0004] The above conveying device has the following defects:

[0005] Firstly, the two sets of conveying assemblies in the conveying device are provided with conveying belts, and the seat body, the two sets of conveying assemblies, the motor, the two sets of pressing assemblies and the gear member are arranged in the order of the seat body, the two sets of conveying assemblies, the motor, the two sets of pressing assemblies and the gear member. Fig. 1 It can be clearly seen that the two sets of conveying belts are distributed in a mutually non-parallel manner, and the film is extremely easy to slip out of the two sets of conveying belts or to be misaligned during the conveying process, resulting in the failure of heat sealing.

[0006] Secondly, the two sets of conveying belts are provided with only one contact point between the two sets of pressing assemblies, and the contact point is the sealing point for heat sealing the film, so that the sealing performance is poor and the film is extremely easy to leak after being inflated.

[0007] Thirdly, the transmission efficiency of the gear member is low. UTILITY MODEL CONTENTS

[0008] The utility model solves the technical problems in the prior art and provides a heat sealing transmission device of air column inflator, which is stable in work and has better sealing effect.

[0009] To achieve the above object, the utility model provides the following technical scheme:

[0010] The heat-sealing transmission device of the air column inflator comprises a rack, an air nozzle arranged in sequence along the film conveying direction, a conveying assembly for pulling the film, a heat roller assembly for heat-sealing the film, and a driving mechanism for controlling the operation of the conveying assembly and the heat roller assembly, characterized in that the conveying assembly comprises upper and lower pulling film belts arranged in parallel, the upper pulling film belt is linked with a plurality of groups of upper synchronous wheels arranged in sequence along the film conveying direction, the lower pulling film belt is linked with a plurality of groups of lower synchronous wheels arranged in sequence along the film conveying direction, and the outer surfaces of the upper and lower pulling film belts are provided with uniformly spaced protrusions.

[0011] By arranging the upper and lower pulling film belts in parallel, the problem of film slipping or mispositioning during conveying is effectively solved, the film is stably clamped between the upper and lower pulling film belts during conveying, the slipping and mispositioning of the film during conveying are greatly reduced, and the film can smoothly and accurately enter the heat-sealing link. Further, the upper and lower pulling film belts can stably clamp and pull the film, so that the film can be more uniformly and effectively heat-sealed at the heat roller assembly. In addition, the protrusions increase the sealing points compared with the prior art, which helps to form a more compact and firm sealing structure during heat sealing, thereby significantly improving the sealing performance of heat sealing.

[0012] The heat-sealing transmission device of the air column inflator can be further provided as follows: the driving mechanism comprises a servo motor mounted on the rack, a main transmission gear linked with the output end of the servo motor, a first output gear meshed with the main transmission gear, a second output gear coaxially linked with the first output gear, a first driven gear meshed with the second output gear, a second driven gear coaxially linked with the first driven gear, a third driven gear meshed with the second driven gear, and a group of lower synchronous wheels coaxially linked with the third driven gear.

[0013] According to the technical scheme, the starting of the servo motor drives the main transmission gear to rotate. The main transmission gear meshes with the first output gear, and then drives the coaxial second output gear to rotate. Subsequently, the second output gear meshes with the first driven gear for transmission, and since the first driven gear is coaxially linked with the second driven gear, the second driven gear also rotates with the first driven gear. Finally, the second driven gear meshes with the third driven gear for transmission, and the third driven gear is coaxially linked with the group of lower synchronous wheels, so that the rotation of the lower film belt is realized. Meanwhile, the upper film belt and the lower film belt keep synchronous movement through the convex strips, ensuring the stable conveying of the film. First, the accuracy of the coaxial linkage ensures the synchronous movement of the upper film belt and the lower film belt, thereby maintaining the stability of the film during the conveying process. In addition, the high-precision and high-response speed characteristics of the servo motor, as well as the smoothness and reliability of the gear transmission, together ensure that the heat-sealing conveying device can maintain a stable conveying speed and an accurate heat-sealing position during operation, thereby improving the heat-sealing quality.

[0014] The heat-sealing conveying device of the air column inflator described above can be further provided as follows: the heat roller assembly includes an upper heating roller and a lower silica gel roller arranged oppositely, the upper heating roller is coaxially linked with the second driven gear, and the lower silica gel roller is coaxially linked with the second output gear.

[0015] According to the technical scheme described above, when the second driven gear rotates, the upper heating roller also rotates synchronously. Meanwhile, the lower silica gel roller is coaxially linked with the second output gear, so the lower silica gel roller also rotates with the second output gear. In this way, the upper heating roller and the lower silica gel roller form a heat roller assembly arranged oppositely, which is used for heat-sealing treatment of the film.

[0016] Further, the core point of the driving mechanism designed in the present application is that "the second driven gear drives the upper heating roller to rotate, the second output gear drives the lower silica gel roller to rotate, the third driven gear drives the lower synchronous wheels, and all are driven by the servo motor through the first output gear and the transmission at all levels", which realizes high integration and reduces the intermediate links in the transmission chain, thereby improving the precise synchronization of the entire system. Whether it is the heat-sealing operation of the upper heating roller, the pressing action of the lower silica gel roller, or the conveying function of the lower synchronous wheels, strict timing and coordination can be maintained to ensure the stability and consistency of the film during the heat-sealing process. Since the rotation of all key components is driven by the servo motor, and high synchronization and accuracy are maintained, the conveying, pressing and heat-sealing operations of the film during the heat-sealing process can all reach the best state. This not only improves the heat-sealing quality of the product, reduces quality problems such as air leakage and poor heat-sealing, but also significantly improves the production efficiency and reduces the production cost.

[0017] The heat-sealing transmission device of the air column inflator can be further provided with a cooling column hinged to the frame, and the outer periphery of the cooling column is in contact with the outer periphery of the silica gel wheel.

[0018] With the above technical solution, the silica gel wheel rotates while driving the cooling column to rotate, and the cooling column is used for cooling each part of the silica gel wheel to avoid overheating.

[0019] The heat-sealing transmission device of the air column inflator can be further provided with a cooling column hinged to the frame, and the outer periphery of the cooling column is in contact with the outer periphery of the silica gel wheel.

[0020] With the above technical solution, the silica gel wheel rotates while driving the cooling column to rotate, and the cooling column is used for cooling each part of the silica gel wheel to avoid overheating.

[0021] The heat-sealing transmission device of the air column inflator can be further provided as follows: the heat-sealing transmission device further comprises a main support top plate and a vice support top plate, the main support top plate is fixedly installed on the rack by screws, the vice support top plate is respectively connected with a vice support side plate on both sides, the vice support side plate is slidably connected with a guide rail through a linear bearing, the guide rail is arranged along a direction perpendicular to the normal line of the end surface of the main support top plate, a tension spring is arranged between the vice support side plate and the rack and sleeved on the guide rail, the two ends of the tension spring are respectively connected with the vice support side plate and the rack, the vice support top plate is provided with a rolling bearing on a side away from the main support top plate, a handle is arranged on the rack and distributed on one side of the bearing, the handle is hingedly connected to the rack in the middle, one end of the handle is provided with an arc surface and two groups of clamping grooves arranged at two ends of the arc surface; a plurality of groups of synchronous wheels, heating wheels, metering wheels and code disc photoelectric coupler assemblies are arranged on the vice support top plate, a vice support bottom plate is connected to a side of the vice support side plate away from the vice support top plate through screws, a driven shaft is hingedly connected between the vice support bottom plate and the vice support top plate, the first driven gear and the second driven gear are both installed on the driven shaft, the main support top plate is connected with a main support bottom plate, a driving shaft is hingedly connected between the main support bottom plate and the main support top plate, and the first output gear and the second output gear are both installed on the driving shaft.

[0022] By rotating the handle, one end of the handle is provided with two groups of clamping grooves distributed at two ends of the arc surface, one group of the clamping grooves can be matched with the bearing on the rack to achieve locking and releasing of the vice support top plate. When the vice support top plate is not locked by the handle, the vice support top plate is away from the main support top plate under the action of the tension spring, the upper pulling film belt and the lower pulling film belt are in a separated state, the film is convenient to take out or put in, and the heat-sealing transmission device is convenient to overhaul.

[0023] The utility model will be further explained in detail in connection with the drawings and examples. DRAWINGS

[0024] Fig. 1 It is whole structure schematic diagram of embodiment of the utility model;

[0025] Fig. 2 It is local enlarged schematic diagram of embodiment of the utility model;

[0026] Fig. 3 It is drive mechanism schematic diagram of embodiment of the utility model;

[0027] Fig. 4 It is connection structure schematic diagram between drive mechanism and vice support top plate, main support top plate of embodiment of the utility model.

[0028] Label annotation: air nozzle 1, cooling column 2; metering wheel 3, strip groove 3a, code disk 3b, through hole 3e; code disk optical coupler assembly 4, open slot 4a; main bracket top plate 5, auxiliary bracket top plate 6, auxiliary bracket side plate 7, guide rail 8, rolling bearing 9, handle 10, slot 11, tension spring 12, auxiliary bracket bottom plate 13, main bracket bottom plate 14; transportation assembly a, upper film pull belt a1, lower film pull belt a2, upper synchronous wheel a3, lower synchronous wheel a4, convex strip a5; driving mechanism b, servo motor b1, main transmission gear b2, first output gear b3, second output gear b4, first driven gear b5, second driven gear b6, third driven gear b7, driven shaft b8, driving shaft b9; hot roller assembly c, heating wheel c1, silicone wheel c2. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figs. 1 to 4 The heat sealing transmission device of the air column inflator shown includes a frame, on which are installed air nozzles 1 arranged in sequence along the film transportation direction, a transportation component a for pulling the film, a hot roller component c for heat sealing the film, and a driving mechanism b for controlling the operation of the transportation component a and the hot roller component c. The transportation component a includes an upper film pulling belt a1 and a lower film pulling belt a2 that are opposite to each other and distributed parallel to each other. The upper film pulling belt a1 is linked to multiple groups of upper synchronous wheels a3 that are arranged in sequence along the film transportation direction, and the lower film pulling belt a2 is linked to multiple groups of lower synchronous wheels a4 that are arranged in sequence along the film transportation direction. The outer surfaces of the upper film pulling belt a1 and the lower film pulling belt a2 are provided with evenly spaced convex strips a5. By designing the upper and lower film strips a1 and a2 that are arranged parallel to each other and face each other, the problem of the film easily slipping or misaligning during transportation is effectively solved, ensuring that the film is always stably clamped between the upper and lower film strips a1 and a2 during transportation, thereby greatly reducing the film's slipping and misalignment during transportation and ensuring that the film can smoothly and accurately enter the heat sealing process. Furthermore, because the upper and lower film strips a1 and a2 can stably clamp and pull the film, the film can be heat-sealed more evenly and effectively at the hot roller assembly c. In addition, the design of the convex strip a5 increases the number of sealing points compared to the existing technology, which also helps to form a tighter and more secure sealing structure during the heat sealing process, thereby significantly improving the sealing performance of the heat seal.

[0031] The driving mechanism b comprises a servo motor b1 mounted on the frame, a main transmission gear b2 connected with the output end of the servo motor b1, a first output gear b3 meshed with the main transmission gear b2, a second output gear b4 coaxially connected with the first output gear b3, a first driven gear b5 meshed with the second output gear b4, a second driven gear b6 coaxially connected with the first driven gear b5, a third driven gear b7 meshed with the second driven gear b6, and a group of lower synchronous wheels a4 coaxially connected with the third driven gear b7. Through the start of the servo motor b1, the main transmission gear b2 is driven to rotate. The main transmission gear b2 is meshed with the first output gear b3, thereby driving the coaxial second output gear b4 to rotate. Then, the second output gear b4 is meshed with the first driven gear b5 for transmission, and since the first driven gear b5 is coaxially connected with the second driven gear b6, the second driven gear b6 also rotates with the first driven gear b5. Finally, the second driven gear b6 is meshed with the third driven gear b7 for transmission, and the third driven gear b7 is coaxially connected with the group of lower synchronous wheels a4, thereby realizing the rotation of the lower film belt a2, which drives the upper film belt a1 to rotate through the convex strip a5.

[0032] The hot roller assembly c comprises a heating roller c1 and a silica gel roller c2 arranged oppositely. The heating roller c1 is coaxially connected with the second driven gear b6, and the silica gel roller c2 is coaxially connected with the second output gear b4. When the second driven gear b6 rotates, the heating roller c1 also rotates synchronously. At the same time, the silica gel roller c2 is coaxially connected with the second output gear b4, so the silica gel roller c2 also rotates with the second output gear b4. In this way, the heating roller c1 and the silica gel roller c2 form a hot roller assembly c arranged oppositely, which is used for heat sealing treatment of the film.

[0033] Further, the core point of the driving mechanism b designed in the embodiment is that the second driven gear b6 drives the heating roller c1 to rotate, the second output gear b4 drives the silica gel roller c2 to rotate, the third driven gear b7 drives the lower synchronous wheel a4, and all are driven by the servo motor b1 through the first output gear b3 and each level of transmission. This realizes high integration and reduces the intermediate links in the transmission chain, thereby improving the precise synchronization of the whole system. Whether it is the heat sealing operation of the heating roller c1, the pressing action of the silica gel roller c2, or the conveying function of the lower synchronous wheel a4, strict timing and coordination can be maintained to ensure the stability and consistency of the film in the heat sealing process. Since the rotation of all key components is driven by the servo motor b1, and high synchronization and precision are maintained, the conveying, pressing and heat sealing operations of the film in the heat sealing process can all reach the best state. This not only improves the heat sealing quality of the product, reduces quality problems such as air leakage and poor heat sealing, but also significantly improves the production efficiency and reduces the production cost.

[0034] The cooling column 2 is hinged on the rack, and the outer periphery of the cooling column 2 is in contact with the outer periphery of the silica gel wheel c2. When the silica gel wheel c2 rotates, the cooling column 2 can rotate with the silica gel wheel c2. While the silica gel wheel c2 rotates, the cooling column 2 rotates with the silica gel wheel c2. The cooling column 2 is used for cooling each part of the silica gel wheel c2 to avoid overheating.

[0035] The upper pulling film belt a1 is provided with a metering wheel 3 hinged on the rack on the side away from the lower pulling film belt a2. The outer periphery of the metering wheel 3 is uniformly distributed with a plurality of strip-shaped grooves 3a capable of adapting to the convex strip a5. The upper pulling film belt a1 is meshed and driven with the metering wheel 3 through the cooperation of the convex strip a5 and the strip-shaped groove 3a. The end of the metering wheel 3 is provided with a dial 3b with an outer diameter greater than the shaft diameter of the metering wheel 3. The rack is provided with a dial optical coupling assembly 4 distributed on the upper side of the dial 3b. The dial optical coupling assembly 4 is provided with an open slot 4a below. The outer edge of the dial 3b is in clearance fit with the open slot 4a. The rotation of the metering wheel 3 and the number of strip-shaped grooves 3a can accurately measure the movement distance of the upper pulling film belt a1. The dial 3b is uniformly distributed with a plurality of through holes 3e. When the dial 3b rotates with the metering wheel 3, it will periodically block or expose the light of the dial optical coupling assembly 4, thereby generating an electrical signal, realizing real-time monitoring and accurate feedback of the movement distance of the upper pulling film belt a1.

[0036] The heat sealing transmission device further comprises a main support top plate 5 and a secondary support top plate 6, the main support top plate 5 is fixedly installed on the rack by screws, the secondary support top plate 6 is linked with a secondary support side plate 7 on both sides, the secondary support side plate 7 is slidably connected with a guide rail 8 through a linear bearing, the guide rail 8 is arranged along the direction perpendicular to the normal line of the end surface of the main support top plate 5, a tension spring 12 is arranged between the secondary support side plate 7 and the rack and sleeved on the guide rail 8, both ends of the tension spring 12 are connected with the secondary support side plate 7 and the rack respectively, the secondary support top plate 6 is arranged with a rolling bearing 9 on the side away from the main support top plate 5, a handle 10 is arranged on the rack and distributed on one side of the bearing, the handle 10 is hingedly connected to the rack in the middle, one end of the handle 10 is provided with an arc surface and two groups of clamping grooves 11 arranged on both ends of the arc surface; a plurality of synchronous wheels, a heating wheel c1, a metering wheel 3 and a code disc photoelectric coupler assembly 4 are arranged on the secondary support top plate 6, a secondary support bottom plate 13 is connected to the side of the secondary support side plate 7 away from the secondary support top plate 6 by screws, a driven shaft b8 is hingedly connected between the secondary support top plate 6 and the secondary support bottom plate 13, a first driven gear b5 and a second driven gear b6 are both installed on the driven shaft b8, a main support bottom plate 14 is linked with the main support top plate 5, a driving shaft b9 is hingedly connected between the main support top plate 5 and the main support bottom plate 14, a first output gear b3 and a second output gear b4 are both installed on the driving shaft b9. By rotating the handle 10, one end of the handle 10 is provided with two groups of clamping grooves 11 distributed on both ends of the arc surface, one of which can cooperate with the bearing on the rack to achieve locking and releasing of the secondary support top plate 6. When the secondary support top plate 6 is not locked by the handle 10, the secondary support top plate 6 is away from the main support top plate 5 under the action of the tension spring 12, and the upper pulling film belt a1 and the lower pulling film belt a2 are in a separated state, which is convenient for taking out or putting in the film and also convenient for repairing the heat sealing transmission device.

[0037] Working principle: manually pull the film through the air nozzle 1 until it enters between the upper pulling film belt a1 and the lower pulling film belt a2, and then the driving mechanism b works, the lower pulling film belt a2 and the upper pulling film belt a1 move relatively to pull the film, and the film is pulled to the heat roller assembly c to be heat sealed.

Claims

1. A heat-sealing conveying device for an air column inflator, comprising a frame, mounted on which are air nozzles arranged in sequence along the film transport direction, a transport assembly for pulling the film, a hot roller assembly for heat-sealing the film, and a drive mechanism for controlling the operation of the transport assembly and the hot roller assembly, characterized in that: The transport component includes an upper film belt and a lower film belt that are opposite to each other and distributed parallel to each other. The upper film belt is linked to several groups of upper synchronous wheels that are arranged in sequence along the film transport direction. The lower film belt is linked to several groups of lower synchronous wheels that are arranged in sequence along the film transport direction. The outer surfaces of the upper film belt and the lower film belt are both provided with evenly spaced convex strips.

2. The heat sealing and transmission device of the air column inflator according to claim 1, characterized in that: The driving mechanism includes a servo motor whose body is mounted on a frame, and a main transmission gear linked to the output end of the servo motor, the main transmission gear meshing with a first output gear, the first output gear coaxially linked to a second output gear, the second output gear meshing with a first driven gear, the first driven gear coaxially linked to a second driven gear, the second driven gear meshing with a third driven gear, and the third driven gear coaxially linked to a set of lower synchronous wheels.

3. The heat sealing and transmission device of the air column inflator according to claim 2, characterized in that: The hot roller assembly includes a heating wheel and a silicone wheel which are arranged opposite to each other in an upper and lower direction. The heating wheel is coaxially linked to the second driven gear, and the silicone wheel is coaxially linked to the second output gear.

4. The heat sealing and transmission device of the air column inflator according to claim 3, characterized in that: A cooling column is hinged on the frame, and the outer periphery of the cooling column contacts the outer periphery of the silicone wheel. When the silicone wheel rotates, the cooling column can rotate along with the silicone wheel.

5. The heat sealing and conveying device of the air column inflator according to any one of claims 1 to 4, characterized in that: The upper film belt is located on the side away from the lower film belt and is provided with a metering wheel hinged on the frame. The outer circumference of the metering wheel is evenly distributed with several groups of strip grooves that can adapt to the convex strips. The upper film belt is meshed with the metering wheel through the cooperation of the convex strips and the strip grooves to achieve meshing transmission with the metering wheel. The end of the metering wheel is provided with a code disk with an outer diameter larger than the diameter of the metering wheel shaft. The frame is equipped with a code disk optical coupling assembly distributed on the upper side of the code disk, and an open groove is provided below the code disk optical coupling assembly. The outer edge portion of the code disk is gap-matched with the open groove.

6. The heat sealing and transmission device of the air column inflator according to claim 4, characterized in that: The heat sealing transmission device also includes a main bracket top plate and a sub-bracket top plate, the main bracket top plate is fixedly installed on the frame by screws, and sub-bracket side plates are respectively linked on both sides of the sub-bracket top plate, and the sub-bracket side plates are slidably connected to guide rails through linear bearings, and the guide rails are arranged along the end face normal direction perpendicular to the main bracket top plate, and a tension spring sleeved on the guide rails is arranged between the sub-bracket side plates and the frame, and the two ends of the tension spring are respectively connected to the sub-bracket side plates and the frame, and the sub-bracket top plate is provided with a hinged rolling bearing on the side away from the main bracket top plate, and the frame is provided with a handle distributed on one side of the bearing, and the middle of the handle It is hinged on the frame, and one end of the handle is provided with a curved surface, and two groups of slots are respectively arranged at both ends of the curved surface; several groups of synchronous wheels, heating wheels, metering wheels, and code disk optical coupling components are all arranged on the top plate of the sub-bracket, and the sub-bracket side plate is located on the side away from the sub-bracket top plate and is connected to the sub-bracket bottom plate by screws. A driven shaft is hinged between the sub-bracket bottom plate and the sub-bracket top plate, and the first driven gear and the second driven gear are both installed on the driven shaft. The main bracket top plate is linked to the main bracket bottom plate, and a driving shaft is hinged between the main bracket bottom plate and the main bracket top plate, and the first output gear and the second output gear are both installed on the driving shaft.

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