Thermal shrinkage device and product plastic film system

Abstract

The utility model discloses a thermal shrinkage device and product plastic film system, the thermal shrinkage device comprises an air guide pipe and an air guide main body, the air guide pipe is used for conveying hot air, the air guide main body is communicated with the air guide pipe to realize the fluidity of the hot air, the end face of one side of the air guide main body deviating from the air guide pipe is an air outlet face, and the air outlet face is communicated with the air guide main body. Hot air can be output through the air outlet face, more importantly, the air outlet face protrudes towards the air guide pipe, so that the air guide body is of an arch structure, and an arch space is defined by the arch structure and the working platform. A shrink film attached to the surface of a product can shrink under the action of hot air when passing through the arched space, so that film molding work is completed, arrangement of multiple heating air outlet heads is avoided, electric energy consumption is reduced to a certain degree, the multiple heating air outlet heads are fused and integrated into one device, and the heating and film molding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkage, and further relates to a heat shrinkage device and a product plastic film system. Background Art

[0002] At present, with the widespread use of heat shrink film technology in the packaging of daily cosmetic products, the high energy consumption of heating equipment and low thermal energy utilization rate in the production process have been plaguing cosmetic manufacturers. At the same time, traditional heat shrink equipment produces a lot of products with poor appearance during the production process, requiring a lot of rework and resulting in waste of shrink film.

[0003] In traditional production in the past, the structure of heat shrinkage equipment consisted of 1 front-end pre-shrinkage and 3 rear-end independent heating outlets, each of which required 4 heating devices to provide heat energy. The electricity consumption was relatively high, which led to an increase in factory production costs.

[0004] In summary, the current traditional technology needs to be improved. Utility Model Content

[0005] In view of the above technical problems, the purpose of the utility model is to provide a heat shrinking device and a product plastic film system, which can effectively avoid the installation of multiple heating air outlets, reduce power consumption to a certain extent, adopt a more integrated approach, and improve heating efficiency.

[0006] In order to achieve the above object, the utility model provides a heat shrinking device for forming a shrink film on a product surface, comprising:

[0007] An air duct for conveying hot air;

[0008] An air guide body is connected to the air guide pipe to realize the fluidity of the hot air, and the end surface of the air guide body facing away from the air guide pipe is configured as an air outlet surface, and the hot air is output through the air outlet surface;

[0009] The air outlet surface protrudes toward the air guide pipe, so that the air guide body forms an arch structure. The arch structure and the working platform form an arch space. The working platform is used to transport products with shrink film attached.

[0010] It is worth mentioning that the product is placed in an arched space and semi-enclosed by the curved air outlet structure, so that the shrink film can be heated circumferentially in all directions simultaneously, effectively reducing the required number of heating devices and avoiding energy waste.

[0011] In some embodiments, the air duct has a fluid inlet, the fluid inlet is connected to the output end of the fan, and the fan is used to output cold air;

[0012] The heat shrink device also includes a heating device, and the heating device is used to heat the cold air.

[0013] In some embodiments, the heating device is an annular heater, which forms an annular heating channel through which fluid can pass. When the heating device is turned on, the cold air flows through the annular heating channel to form the hot air.

[0014] In some embodiments, the annular heater is connected to the air duct by screws or threads;

[0015] The annular heater has an air inlet and an air outlet, the air inlet is connected to the output end of the fan, and the air outlet is connected to the fluid inlet.

[0016] In some embodiments, the air outlet surface has a plurality of air outlet holes;

[0017] The plurality of air outlet holes are arranged in an array of one row and multiple columns or multiple rows and multiple columns.

[0018] In some embodiments, the end surface of the arch structure close to the working platform is divided into a first docking surface and a second docking surface. Both the first docking surface and the second docking surface are flat surfaces and are abutted and fixed to the working platform.

[0019] In some embodiments, the projection of the air outlet surface on the vertical plane is a semicircle with an opening facing away from the air guide duct.

[0020] Furthermore, the air outlet surface is limited between the first butt joint surface and the second butt joint surface, so that the first butt joint surface and the second butt joint surface avoid the plurality of air outlet holes.

[0021] In some embodiments, the cross-sectional area of ​​each of the air outlet holes increases monotonically in the output direction of the hot air, thereby forming a fan-shaped heating area.

[0022] In some embodiments, a projection outline of the air guide body on a horizontal plane is a rectangle.

[0023] Another aspect of the present invention also provides a product film molding system, comprising:

[0024] A plurality of the above-mentioned heat shrink devices;

[0025] at least one conveyor belt, used as the working platform;

[0026] Wherein, the heat shrinking devices are evenly arranged along the conveying direction of the corresponding conveyor belts, and each conveyor belt is opposite to the corresponding air outlet surface.

[0027] Compared with the prior art, the heat shrink device and product plastic film system provided by the utility model have the following beneficial effects:

[0028] 1. The utility model provides a heat shrinking device, which places the product in an arched space and semi-surrounds the product through an arc-shaped air outlet structure, so that the shrink film is circumferentially heated synchronously in all directions, effectively reducing the required number of heating devices and avoiding energy waste.

[0029] 2. The utility model provides a heat shrinking device with multiple rows or multiple rows of air outlet holes evenly distributed on the air outlet surface, so that the hot air is more evenly discharged, the quality and efficiency of the plastic film are improved, and at the same time the bottom of the arched structure is fixed to the working platform to ensure the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0031] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0032] Figure 2 It is a schematic diagram of the opening structure of the air outlet surface in one embodiment of the utility model.

[0033] Description of the accompanying drawings: air guide pipe 1; air guide body 2; air outlet surface 21; air outlet hole 210; first docking surface 221; second docking surface 222; fan 3; heating device 4. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0035] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically drawn or marked. In this article, "one" not only means "only one", but also means "more than one".

[0036] It should be further understood that the term “and / or” used in the specification and appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0037] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0040] In one embodiment, the reference specification Figure 1 A heat shrinking device provided by the utility model is described. The heat shrinking device provided by the utility model can effectively avoid setting up multiple heating air outlets, reduce power consumption to a certain extent, adopt a more integrated approach, and improve heating efficiency.

[0041] Reference Manual Attached Figure 1 The utility model provides a heat shrinking device for forming a shrink film on a product surface, comprising an air guide duct 1 and an air guide body 2.

[0042] The above-mentioned air guide duct 1 is used to transport hot air. The above-mentioned air guide body 2 is connected to the air guide duct 1 to achieve the fluidity of the hot air, and the end surface of the air guide body 2 facing away from the air guide duct 1 is configured as an air outlet surface 21, and the hot air is output through the air outlet surface 21.

[0043] The air outlet surface 21 protrudes toward the air guide duct 1 , so that the air guide body 2 forms an arch structure. The arch structure and the working platform form an arch space. The working platform is used to transport products with shrink film attached thereto.

[0044] It is worth mentioning that the arched structure formed on the air guide body 2 can enclose an arched space together with the working platform. The product is placed in this arched space, which plays a certain limiting role.

[0045] At the same time, it is easy to understand that the contour of the air outlet surface 21 is also a curved surface. The hot air flows through the air guide body 2 and is output from the air outlet surface 21, so that the hot air can form a circumferential wrapping around the product on the surface of the working platform, and then plastic film is formed, which can effectively improve the quality of the plastic film and the wrapping feeling.

[0046] This embodiment effectively solves the problem in the prior art that multiple heaters / devices are required to generate hot air, greatly reduces energy consumption, and simplifies the structure, making the installation and daily operation and maintenance of the heat shrink device more convenient.

[0047] In addition, in some embodiments, the air guide duct 1 and the air guide body 2 are both made of stainless steel, which has better corrosion resistance and antioxidant effects, is easy to purchase, and is more cost-effective. Of course, other materials can also be used to make the air guide duct 1 and the air guide body 2 in other embodiments, which are not elaborated here.

[0048] In one embodiment, the air duct 1 has a fluid inlet, which is connected to the output end of the fan 3, and the fan 3 is used to output cold air.

[0049] It should be noted that in this embodiment, there is no specific limitation on the specific model, type, etc. of the fan 3, as long as it can output air normally. Of course, the fluid inlet and the output end of the fan 3 are connected, which can be a direct connection or an indirect connection, as long as the two ports are connected to each other.

[0050] It is conceivable that the heat shrink device further includes a heating device 4, and the heating device 4 is used to heat the cold air.

[0051] Among them, the type of heating device 4 can be selected according to the actual situation of the factory. Its setting position can be set on the inner wall of the air duct 1, or it can be set between the fan 3 and the air duct 1. No specific limitation is made in this embodiment, and technicians can make appropriate adjustments or changes to certain parts based on the technical concept of this embodiment.

[0052] In addition, the above-mentioned heating device 4 can be switched on and off manually or by machine. When the plastic film is being processed, the heating device 4 is turned on to heat the hot air; when the plastic film is not being processed, the heating device 4 is turned off, and the fan 3 can be turned on to output cold air to dissipate the heat of the air duct 1, thereby preventing the air duct 1 and the air guide body 2 from being in a high temperature environment all the time, thereby avoiding affecting their lifespan.

[0053] Of course, in other embodiments, a heat sink may be provided for the heat shrink device, thereby effectively preventing the heat shrink device from being overheated during normal operation.

[0054] In one embodiment, the heating device 4 is an annular heater, which forms an annular heating channel through which fluid can pass. When the heating device 4 is turned on, cold air flows through the annular heating channel to form hot air.

[0055] Furthermore, the annular heater has an air inlet and an air outlet, the air inlet is connected to the output end of the fan 3, and the air outlet is connected to the fluid inlet.

[0056] It should be noted that in this embodiment, the fan 3 is connected to the air duct 1 through an annular heater, thereby realizing the transformation from cold air to hot air. At the same time, the hot air is input into the air duct 1 through the fluid inlet, so as to carry out the subsequent film molding work.

[0057] Among them, the connection method between the air inlet and the output end of the fan 3, and the connection method between the air outlet and the fluid inlet can be flange connection. Of course, this connection method does not belong to the improvement point of the utility model, so all connection methods available in the prior art can be selected, and are not limited to flange connection.

[0058] It can be understood that the annular heater is connected to the air duct 1 by a detachable connection method, such as a screw or threaded connection, so as to facilitate the subsequent daily operation and maintenance of the annular heater.

[0059] In one embodiment, Figure 2 As shown, the air outlet surface 21 has a plurality of air outlet holes 210. It is easy to understand that the air outlet holes 210 are used to guide the hot air in the air guide body 2. The shape of the air outlet holes 210 is generally circular, so the figures also show circular holes, but of course rectangular holes, diamond holes, or even irregular holes can also be used.

[0060] Furthermore, the plurality of air outlet holes 210 are arranged in an array of one row and multiple columns or multiple rows and multiple columns.

[0061] It should be noted that the meaning of one row and multiple columns and multiple rows and multiple columns also needs to be set according to the length direction and width direction of the air guide body 2. Generally, a row of holes is formed in sequence along the length direction, and a row of holes is formed in sequence along the width direction. When the length direction and the width direction are reversed, the two are exactly the opposite.

[0062] Moreover, a certain offset can be formed between each row of holes or each column of holes. Specifically, as shown in the figure, the projection outline of the air guide body 2 on the horizontal plane is a rectangle. The figure is only used to illustrate the relative position of the air outlet holes 210. It is not difficult to see that this offset setting effectively improves the uniformity of the air outlet, and at the same time can expand the air outlet area, making the plastic film range on the product larger.

[0063] In another embodiment, in the above embodiment, the cross-sectional area of ​​each air outlet hole 210 increases monotonically in the output direction of the hot air, thereby forming a fan-shaped heating area.

[0064] It should be noted that, although the form of the air outlet holes in this embodiment is not shown in the accompanying drawings, it is not difficult to understand that as the aperture of the air outlet holes 210 gradually increases, the relative coverage area of ​​the hot air will be larger when the hot air is output, which is conducive to the hot air acting on the shrink film over a large area; in addition, in other embodiments, the aperture of the air outlet holes 210 can also be gradually reduced, which can increase the flow rate of the hot air when it is output, and can be combined with increasing the number of air outlet holes 210 to make the plastic film points more concentrated.

[0065] The above two apertures can not only be used independently, but also can be used in combination. The former air outlet holes 210 with gradually increasing apertures can be used on a large scale to ensure the rapid and efficient plastic film formation of the entire product. The latter air outlet holes 210 with gradually decreasing apertures can be used on a small scale to form targeted films on local structures on the product, thereby improving reliability.

[0066] In one embodiment, the end surface of the arch structure close to the working platform is divided into a first docking surface 221 and a second docking surface 222 , and both are abutted and fixed to the working platform.

[0067] It should be noted that the abutment fixation here does not necessarily require additional connecting parts. When the first butt joint surface 221 and the second butt joint surface 222 are both flat planes, the heat shrink device can be directly pressed on the work platform for fixation by its own gravity.

[0068] Optionally, a recessed portion can be provided on the working platform, and the contour of the recessed portion corresponds to the first docking surface 221 and the second docking surface 222 respectively, so that a part of the arched structure is snap-fitted with the recessed portion to achieve fixed positioning of the working platform on the air guide body 2.

[0069] In one embodiment, as shown in the figure, the projection of the air outlet surface 21 on the vertical plane is a semicircle with the opening facing away from the air guide duct 1 .

[0070] The air outlet surface 21 is limited between the first butt joint surface 221 and the second butt joint surface 222 , so that the first butt joint surface 221 and the second butt joint surface 222 avoid the plurality of air outlet holes 210 .

[0071] It should be noted that in this embodiment, the widths of the air outlet surface 21 , the first docking surface 221 , and the second docking surface 222 are not limited, but in general, the widths of the first docking surface 221 and the second docking surface 222 are definitely smaller than the width of the air outlet surface 21 .

[0072] With reference to the attached drawings of the specification, the projection of the air outlet surface 21 on the vertical plane has a semicircular outline in the present embodiment. It is not difficult to understand that the outline of the air guide body 2 is similar to a semi-ring. Combined with the above embodiment, the hot air is discharged from this semi-ring surface. Of course, in other embodiments, the outline, shape, etc. of the air outlet surface 21 can also be adjusted to match the external contour of the product, such as a semi-ellipse, a semi-rectangle, etc.

[0073] In one embodiment, according to another aspect of the present invention, the present invention further provides a product film molding system, which includes the above-mentioned heat shrinking device and conveyor belt.

[0074] The number of heat shrink devices and conveyor belts can be adjusted according to actual conditions. In general, multiple heat shrink devices can be set on a conveyor belt. Each heat shrink device is evenly arranged along the conveying direction of the conveyor belt. Products with shrink film attached are placed on the conveyor belt, and the air outlet faces the conveyor belt or the product.

[0075] When the fan 3, the heating device 4 and the conveyor belt are turned on synchronously or in coordination, the product will be transported forward along the conveyor belt. At the same time, the heating device 4 emits hot air to heat the shrink film so that it is molded around the periphery of the product.

[0076] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A heat shrink device, characterized in that: Used to shape shrink film on the surface of the product, including: An air duct for conveying hot air; An air guide body is connected to the air guide pipe to realize the fluidity of the hot air, and the end surface of the air guide body facing away from the air guide pipe is configured as an air outlet surface, and the hot air is output through the air outlet surface; The air outlet surface protrudes toward the air guide pipe, so that the air guide body forms an arch structure. The arch structure and the working platform form an arch space. The working platform is used to transport products with shrink film attached.

2. A heat shrink device according to claim 1, characterized in that: The air guide duct has a fluid inlet, the fluid inlet is connected to the output end of the fan, and the fan is used to output cold air; The heat shrink device also includes a heating device, and the heating device is used to heat the cold air.

3. A heat shrink device according to claim 2, characterized in that: The heating device is an annular heater, which forms an annular heating channel through which fluid can pass. When the heating device is turned on, the cold air flows through the annular heating channel to form the hot air.

4. A heat shrink device according to claim 3, characterized in that: The annular heater is connected to the air duct by screws or threads; The annular heater has an air inlet and an air outlet, the air inlet is connected to the output end of the fan, and the air outlet is connected to the fluid inlet.

5. A heat shrink device according to claim 1, characterized in that: The air outlet surface has a plurality of air outlet holes; The plurality of air outlet holes are arranged in an array of one row and multiple columns or multiple rows and multiple columns.

6. A heat shrink device according to claim 5, characterized in that: The end surface of the arch structure close to the working platform is divided into a first butt joint surface and a second butt joint surface. Both the first butt joint surface and the second butt joint surface are flat surfaces and are abutted and fixed to the working platform.

7. A heat shrink device according to claim 6, characterized in that: The projection of the air outlet surface on the vertical plane is a semicircle with the opening facing away from the air guide duct. Furthermore, the air outlet surface is limited between the first butt joint surface and the second butt joint surface, so that the first butt joint surface and the second butt joint surface avoid the plurality of air outlet holes.

8. A heat shrink device according to claim 5, characterized in that: The cross-sectional area of ​​each of the air outlet holes increases monotonically in the output direction of the hot air, thereby forming a fan-shaped heating area.

9. A heat shrink device according to any one of claims 1 to 8, characterized in that: The projection outline of the air guide body on the horizontal plane is a rectangle.

10. A product film forming system, characterized in that: include: A heat shrink device according to any one of claims 1 to 9; at least one conveyor belt to serve as the working platform; Wherein, the heat shrink devices are evenly arranged along the conveying direction of the corresponding conveyor belts, and each conveyor belt is opposite to the corresponding air outlet surface.

Images