Heat sealing device for automatic packaging

Abstract

The utility model discloses a heat sealing device for automatic packaging, relates to the technical field of heat sealing, and aims to solve the technical problem that heat distribution is uneven and easy to disperse in the hot air heat sealing process, the heat sealing device comprises an equipment main body, two discharging mechanisms are arranged at the input end of the equipment main body, and a conveying track is arranged in the center area of the top of the equipment main body. An automatic winding mechanism is installed at the output end of the equipment body, a connecting plate is fixed to the side, close to the automatic winding mechanism, of the conveying rail, two hot air guns are installed on the connecting plate, hot air restraining covers are arranged at hot air outlets of the hot air guns, inner spiral structures are arranged between the hot air restraining covers and the hot air guns, and a fan is arranged on one side of each hot air restraining cover. And a driving structure is arranged between the fan and the hot air restraining cover. The inner spiral structure enables hot air to flow in a spiral track, has the advantages of being capable of improving heating uniformity, saving energy and improving heat sealing quality, and is matched with the driving structure and the fan to remove dust on the surface.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat seal technical field more specifically, relate to a kind of heat seal closing device for automatic packaging. BACKGROUND

[0002] Automatic packaging is one of the processes of product production, among which similar disinfection bag articles are commonly sealed by hot air blower in automatic packaging heat seal process. The hot air blower blows high-temperature airflow through the air outlet, softens and fuses the film material, and thus realizes sealing. However, this traditional heat sealing method has many defects that cannot be ignored. The direct blowing of the hot air blower outlet to the film makes it difficult to accurately control the temperature and heat distribution of the heat sealing area. The concentrated hot airflow and uneven temperature distribution easily cause local overheating of the film during the heat sealing process, which causes the film to deform excessively. In view of this, we propose a heat seal closing device for automatic packaging. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of the prior art, meeting the needs of reality, and providing a heat seal closing device for automatic packaging to solve the technical problem of uneven heat distribution and easy dispersion in the current hot air heat seal process.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a heat seal closing device for automatic packaging, comprising a device main body, two discharge mechanisms are arranged at the input end of the device main body, a conveying track is arranged at the top center area of the device main body, an automatic winding mechanism is installed at the output end of the device main body, a connecting plate is fixed on one side of the conveying track close to the automatic winding mechanism, two hot air guns are installed on the connecting plate, a hot air restraint cover is arranged at the hot air outlet position of the hot air gun, a sealing cover is installed at the top of the hot air restraint cover, an inner spiral structure is arranged between the hot air restraint cover and the hot air gun, a fan is arranged on one side of the hot air restraint cover, two fans are arranged opposite to each other to form a dust removal air duct, and a driving structure is arranged between the fan and the hot air restraint cover.

[0005] Preferably, the hot air restraint cover is conical from top to bottom with a gradually decreasing diameter, the bottom of the hot air restraint cover is open and in contact with the heat-sealed film, and a side plate fixed to the device main body is arranged on one side of the fan.

[0006] Preferably, the inner spiral structure comprises a sheath, the sheath is fixed to the hot air outlet of the hot air gun, a hot air pipe is connected to the bottom of the sheath, the hot air pipe is helical from top to bottom with a gradually decreasing diameter, the hot air pipe is embedded in the inner wall of the hot air restraint cover and is adapted, and a helical air duct is arranged at the outlet position of the hot air pipe.

[0007] Preferably, the spiral air duct is a spiral groove opened in the inner wall of the hot air restraint cover, the spiral air duct is designed as an outward recess, and the spiral air duct is integrally formed with a protruding isolation rib between adjacent sides of the spiral track.

[0008] Preferably, the driving structure comprises an air outlet pipe connected to the bottommost spiral ring of the spiral air duct, a spiral shell mounted at the other end of the air outlet pipe, a heat dissipation opening formed in the spiral shell, a spiral propeller mounted in the spiral shell, and a transmission member connected to the penetrating end of the spiral propeller.

[0009] Preferably, the transmission member is composed of two transmission wheels and a belt body between the outer peripheries of the two transmission wheels, one of the transmission wheels is connected to the central shaft of the fan, the central shaft of the fan is rotatably connected with an L-shaped frame body, and the L-shaped frame body is fixed to the side plate.

[0010] Compared with the prior art, the utility model has the advantages that:

[0011] 1、The inner spiral structure makes the hot air flow in a spiral track, the hot air flow can surround the heat-sealed object in the circumferential direction, uniformly cover the heat-sealing area, reduce local overheating or overcooling, improve the consistency and stability of heat sealing, the temperature gradient of the hot air flow is formed in the axial direction by the conical design, the heat sealing can be realized by using lower heat and energy can be saved, and the problem of uneven heat distribution and easy dispersion in the process of hot air heat sealing is solved.

[0012] 2、The hot air spiral makes the molecules of the heat-sealing interface material obtain more sufficient energy, the movement is intensified, the mutual diffusion and penetration are more sufficient, the bonding strength of the heat-sealing part is improved, the heat-sealing part of the plastic film is less likely to tear, the uniform and stable hot air flow makes the heat-sealing edge more neat and smooth, reduces defects such as bubbles and wrinkles, improves the appearance quality of the heat-sealed product, ensures the sealing performance of food packaging, and further solves the problem of uneven heat distribution and easy dispersion in the process of hot air heat sealing.

[0013] 3、The hot air restraint cover and the inner spiral structure constrain and isolate the hot air flow, reduce the heat exchange between the hot air flow and the surrounding environment, reduce heat loss, make more heat used for the heat sealing process, reduce energy consumption cost, the hot air flow mixes and exchanges energy with the hot air flow in the previous area when flowing spirally in the spiral sleeve, fully utilizes the heat, equivalent to multiple utilization of the heat of the hot air flow, and the problem of uneven heat distribution and easy dispersion in the process of hot air heat sealing is solved.

[0014] 4、The utility model discloses still pass through adjusting screw sleeve taper, spiral angle, hot air input speed and temperature etc. Parameter, accurate control heat gas spiral form and heat transfer effect, adapt to the heat sealing demand of different material, thickness and shape, and the relative stability of heat gas spiral flow form and temperature distribution provides stable heat environment for heat sealing process, reduces heat sealing quality fluctuation, improves heat sealing process reliability and repeatability, is favorable to large -scale production quality control, solves the problem that heat distribution is uneven and is easy to disperse in the process of hot air heat sealing.

[0015] 5、The utility model discloses still pass through utilizing high -pressure hot air to drive the spiral propeller rotation, through transmission spare drive fan rotation, both sides fan form dust removal air duct, can clean heat -seal film surface dust fall, and carry out secondary utilization to hot air, simultaneously, transmission wheel and belt body adopt special design, guarantee drive effect and reduce transmission loss. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram of hot air gun part in the utility model;

[0018] Figure 3 It is the split structure schematic diagram of hot air gun part in the utility model;

[0019] Figure 4 It is the split structure schematic diagram of another angle of hot air gun part in the utility model;

[0020] Figure 5 It is a kind of use state schematic diagram in the utility model.

[0021] Mark explanation in drawing:1, equipment main body;2, discharging mechanism;3, conveying track;4, automatic winding mechanism;5, connecting plate;6, hot air gun;7, hot air restraint cover;8, sealing cover;9, inner spiral structure;10, fan;11, drive structure;12, side plate;901, cladding;902, hot air pipe;903, spiral air duct;904, isolation rib;111, air outlet pipe;112, spiral shell;113, spiral propeller;14, transmission spare;141, transmission wheel;142, belt body. DETAILED DESCRIPTION

[0022] As Figures 1 to 5The utility model relates to a kind of heat sealing and sealing device for automatic packaging, including equipment main body 1, two discharging mechanisms 2 are provided in equipment main body 1 input end, conveying track 3 is arranged in the center area of equipment main body 1 top, conveying track 3 carries out flattening and compaction to the raw material of two discharging mechanisms 2, automatic winding mechanism 4 is installed in the output end of equipment main body 1, one side of conveying track 3 close to automatic winding mechanism 4 is fixed with connecting plate 5, two hot air guns 6 are installed on connecting plate 5, above-mentioned discharging mechanism 2, conveying track 3, automatic winding mechanism 4 and hot air gun 6 are all existing technology of equipment self, so specific structure is not repeated, and the difference from prior art is that hot air gun 6 hot air outlet position is equipped with hot air restraint cover 7, hot air restraint cover 7 is tapered from top to bottom, diameter gradually reduces, the bottom of hot air restraint cover 7 is open and contacts with heat-sealed film, sealing cover 8 is installed on the top of hot air restraint cover 7.

[0023] In order to improve heat sealing quality, an inner spiral structure 9 is provided between the hot air restraint cover 7 and the hot air gun 6, the inner spiral structure 9 includes a shell 901, the shell 901 is fixed with the hot air outlet of the hot air gun 6, the bottom of the shell 901 is connected with a hot air pipe 902, the hot air pipe 902 is a spiral shape with a gradually reducing spiral diameter from top to bottom, the hot air pipe 902 is embedded in the inner wall of the hot air restraint cover 7 and is adapted, a spiral air duct 903 is provided at the outlet position of the hot air pipe 902, the spiral air duct 903 is a spiral groove provided in the inner wall of the hot air restraint cover 7, the spiral air duct 903 is designed with an outer concave part, and the outer concave part is used for guiding the flow of hot air, the adjacent sides of the spiral track of the spiral air duct 903 are also integrally formed with protruding isolation ribs 904, the isolation ribs 904 strengthen the isolation between different spiral turns of the spiral air duct 903 and strengthen the effect of restraining hot air, the shell 901 is used for concentrating hot air, and then the hot air is output through the spiral track of the hot air pipe 902 to form a hot guiding output, and the spiral air duct 903 is matched to make the hot air flow in a spiral track.

[0024] This design has the advantages of:

[0025] More uniform heat distribution

[0026] Uniform in the circumferential direction: the spiral sleeve guides the hot air flow to flow in a spiral shape, so that the hot air flow can surround the circumferential direction of the heat-sealed object. Compared with a simple straight hot air flow, it can more evenly cover the heat-sealed area and reduce the risk of local overheating or overcooling, thereby improving the consistency and stability of heat sealing.

[0027] Axial Gradation: The conical spiral sleeve design can create a temperature gradient in the axial direction. During the heat sealing process, different amounts of heat may be required at different locations depending on the characteristics of the heat-sealed material and the requirements of the heat sealing process. For example, during the initial stage of heat sealing, a higher temperature may be needed to quickly soften the material, while a lower temperature can be used to complete the final fusion and setting near the end of the heat sealing. The conical spiral sleeve can meet this requirement, with relatively slow airflow near the cone tip, relatively concentrated heat, and higher temperature, allowing lower heat to achieve heat sealing and saving energy. At the bottom of the cone, the airflow is relatively fast, the heat is relatively dispersed, and the temperature is relatively low, thus achieving a reasonable distribution of heat in the axial direction.

[0028] Enhancing Heat Sealing Effect

[0029] Improving Bonding Strength: The heat spiral can make the molecules of the heat-sealed interface obtain more sufficient energy, and the molecular motion is intensified, so that the mutual diffusion and penetration are more sufficient, thereby improving the bonding strength of the heat-sealed part. For example, in the heat sealing of plastic film, better molecular fusion can make the strength of the heat-sealed part higher and less likely to tear.

[0030] Optimizing Heat Sealing Appearance: Uniform and stable hot air flow can make the heat sealing edge more neat and smooth, reduce defects such as bubbles and wrinkles that may occur during the heat sealing process, and improve the appearance quality of the heat-sealed product. For example, in the heat sealing of food packaging, neat heat sealing edges not only look good, but also better ensure the sealing of the packaging.

[0031] Improving Energy Utilization Efficiency

[0032] Reducing Heat Loss: The spiral sleeve has a certain restraining and isolating effect on the hot air flow, reducing the heat exchange between the hot air flow and the surrounding environment, reducing the proportion of heat loss to the surrounding air, and making more heat available for the heat sealing process, thereby improving the energy utilization efficiency and reducing energy consumption costs.

[0033] Multiple Utilization of Hot Air Flow: During the spiral flow of hot air in the spiral sleeve, the hot air in the spiral sleeve will mix and exchange energy with the hot air in the previously passed area to some extent, so that the heat in the hot air can be more fully utilized, which is equivalent to multiple utilization of the heat in the hot air, further improving the energy utilization efficiency.

[0034] Convenient Process Control

[0035] Precise Adjustment: By adjusting the taper, spiral angle, input speed and temperature of the hot air flow and other parameters of the spiral sleeve, the shape and heat transfer effect of the hot spiral can be accurately controlled to meet the heat sealing needs of different materials, different thicknesses and different shapes.

[0036] Stable and reliable: The formed hot gas spiral has a relatively stable flow pattern and temperature distribution, which can provide a stable thermal environment for the heat sealing process, reduce heat sealing quality fluctuations caused by unstable hot gas flow, improve the reliability and repeatability of the heat sealing process, and facilitate quality control in large-scale production.

[0037] To facilitate dust removal, a fan 10 is installed on one side of the hot air constraint hood 7. A side plate 12, fixed to the main body 1, is also provided on one side of the fan 10. An L-shaped frame is rotatably connected to the central shaft of the fan 10 and fixed to the side plate 12. Two fans 10 are arranged opposite each other to form a dust removal duct. This duct is used to clean dust from the surface. A drive structure 11 is provided between the fan 10 and the hot air constraint hood 7. The drive structure 11 includes an exhaust pipe 111 connected to the bottom spiral ring of the spiral duct 903. A spiral shell 112 is installed at the other end of the exhaust pipe 111, and the spiral shell 112 has a heat dissipation vent. The propeller 113 is installed inside the spiral shell 112. The central shaft of the propeller 113 is rotatably connected to and passes through the spiral shell 112. The through end of the propeller 113 is connected to the transmission component 14. The transmission component 14 consists of two transmission wheels 141 and a belt 142 located between the outer circumferences of the two transmission wheels 141. One of the transmission wheels 141 is connected to the central shaft of the fan 10. Through the discharge of high-pressure hot air, the high-pressure airflow drives the propeller 113 to rotate. With the transmission of the transmission component 14, the fan 10 can be driven to rotate, so that the two fans 10 form an air duct for handling dust and reusing the hot air.

[0038] To ensure drive performance and reduce losses during transmission, the two drive wheels 141 are hollowed out and made of lightweight polyurethane, and the belt body 142 has a hollow or openwork design and is thin.

[0039] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A heat-seal closing device for automatic packaging, characterized in that, The utility model provides a kind of automatic film heat sealing device, including equipment body (1), the equipment body (1) input end is equipped with two material feeding mechanism (2), the equipment body (1) top center area is arranged with conveying track (3), the equipment body (1) output end is equipped with automatic winding mechanism (4), the conveying track (3) is fixed with connecting plate (5) on the side close to automatic winding mechanism (4), the connecting plate (5) is equipped with two hot air gun (6), the hot air gun (6) hot air outlet position is equipped with hot air containment cover (7), the hot air containment cover (7) top is equipped with sealing cover (8), and the hot air containment cover (7) is equipped with inner spiral structure (9) between hot air gun (6), the hot air containment cover (7) one side is equipped with fan (10), two the fan (10) is oppositely arranged to form a dust removal air duct, and the fan (10) is equipped with driving structure (11) between hot air containment cover (7).

2. The automatic heat sealing device for packaging according to claim 1, wherein The hot air containment cover (7) is tapered from top to bottom, the bottom of the hot air containment cover (7) is open and contacts with the heat-sealed film, and the fan (10) is provided with a side plate (12) fixed to the equipment body (1) on one side.

3. A heat sealing device for automatic packaging according to claim 2, characterized in that, The inner spiral structure (9) includes a sheath (901) fixed to the hot air outlet of the hot air gun (6), and the sheath (901) is connected with a hot air pipe (902) at the bottom.

4. The automatic heat sealing device for packaging according to claim 3, wherein The spiral air duct (903) is a spiral groove formed in the inner wall of the hot air containment cover (7), and the spiral air duct (903) is designed with an outer concave structure.

5. A heat sealing device for automatic packaging according to claim 4, characterized in that, The driving structure (11) includes an air outlet pipe (111) connected to the bottommost spiral circle of the spiral air duct (903), and the other end of the air outlet pipe (111) is provided with a spiral shell (112) with a heat dissipation opening.

6. A heat sealing device for automatic packaging according to claim 5, characterized in that The transmission member (14) is composed of two transmission wheels (141) and a belt body (142) between the outer peripheries of the two transmission wheels (141), one of the transmission wheels (141) is connected to the central shaft of the fan (10), the central shaft of the fan (10) is rotatably connected with an L-shaped frame body, and the L-shaped frame body is fixed to the side plate (12).

Images