Hot air heating furnace mechanism

Abstract

The utility model discloses a hot air heating furnace mechanism which comprises a furnace body tunnel. The whole conveyor extends from one end of the furnace body to the other end of the furnace body; the number of the cooling fans is at least one group, and the at least one group of fans are fixedly mounted on the furnace body tunnel; the heating mechanism is connected with an air outlet of the fan; the bottom air duct is integrally arranged at the bottom in the furnace body tunnel, and the bottom air duct is communicated with the heating mechanism; and at least one group of side air ducts are arranged in the furnace body tunnel, are parallel to the conveyor and are arranged on the conveyor, and the side air ducts are communicated with the heating mechanism. The conveyor is divided into a plurality of product channels through the side air channels, and hot air is fed into the product heating channels through the bottom air channels and the side air channels at the same time, so that the hot air synchronously covers the product from the lower part and the side part of the product, a packaging film of the product is heated and shrunk in the product heating channels, and the uniformity of film shrinkage is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and in particular to a hot air heating furnace mechanism. Background Technology

[0002] In recent years, heat shrink film packaging technology has been widely used in product packaging due to its high efficiency and low cost. This technology uses hot air to heat and shrink the film, thereby fixing multiple independent products into a single unit, significantly improving transportation and carrying efficiency. However, traditional equipment often uses a single-channel blower system, where heated air is discharged unidirectionally from the bottom of the furnace. This unidirectional flow design results in uneven heat distribution on the surface of the package, especially for three-dimensional products, where different parts experience significantly different amounts of heat. Utility Model Content

[0003] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a hot air heating furnace mechanism, comprising:

[0004] Furnace tunnel;

[0005] The conveyor extends from one end of the furnace body to the other end. The conveyor drives the product from one end of the furnace body tunnel into the furnace body tunnel and from the other end of the furnace body out of the furnace body tunnel.

[0006] The fan is provided in at least one set, and the at least one set of the fans is fixedly installed on the furnace body tunnel;

[0007] A heating mechanism, which is connected to the air outlet of a fan;

[0008] The bottom air duct is integrally set at the bottom of the furnace body tunnel and is connected to the heating mechanism.

[0009] The side air duct is provided in at least one set. The at least one set of side air ducts is arranged in the furnace body tunnel and parallel to the conveyor on the conveyor to divide the conveyor into multiple product heating channels. The side air duct is connected to the heating mechanism.

[0010] This invention divides the conveyor into multiple product channels by using side air ducts, and simultaneously introduces hot air into the product heating channel through the bottom air duct and side air ducts, so that the hot air covers the product from below and the side at the same time, so that the product packaging film is heated and shrinks in the product heating channel, thereby improving the uniformity of film shrinkage.

[0011] Furthermore, the heating mechanism includes:

[0012] The housing is connected to the air outlet of the fan, and a heater is installed inside the housing.

[0013] The wind baffle is integrally installed inside the air outlet of the box body and is rotatably connected to the air outlet of the box body. The wind baffle is connected to the air outlet adjustment lever located outside the furnace body tunnel via a rotating shaft.

[0014] The air outlet duct is located on the outside of the housing and is connected to the air outlet of the housing.

[0015] By rotating the baffle plate using the air outlet adjustment lever, the angle of the baffle plate can be adjusted, thereby adjusting the opening of the air outlet of the housing and thus adjusting the air volume of the fan.

[0016] Furthermore, the bottom air duct includes:

[0017] The bottom air outlet plate has multiple bottom air outlet holes evenly arranged in the part corresponding to the conveyor. Bottom air duct inlets are provided on both sides of the upper surface of the bottom air outlet plate, and the bottom air duct inlets are connected to the air outlet pipe.

[0018] The bottom baffle plate is located below the bottom air outlet plate, corresponding to the product heating channel. The bottom baffle plate is rotatably connected to the bottom air outlet plate. The pivot of the bottom baffle plate and the bottom air outlet plate extends out of the outside of the bottom air duct and is connected to the bottom air outlet adjustment lever.

[0019] By moving the bottom air outlet adjustment lever, the bottom air baffle is rotated, and the angle of the bottom air baffle is adjusted, thereby adjusting the air volume of each product's heating channel.

[0020] Furthermore, the side air duct includes:

[0021] The movable air duct has first side air outlets evenly arranged on at least one side wall, and a side air duct inlet is also provided on the movable air duct, which is connected to the air outlet duct.

[0022] A fixed air duct is wrapped around the outside of the movable air duct. A second air outlet is provided on the side wall of the fixed air duct corresponding to the first air outlet of the movable air duct. The first air outlet and the second air outlet are connected. The movable air duct moves linearly relative to the fixed air duct along the arrangement direction of the side air duct.

[0023] Furthermore, the fixed air duct has an oblong hole, and a connector passes through the oblong hole from the outside of the fixed air duct to connect with the movable air duct, so that the fixed air duct and the movable air duct remain fixed.

[0024] By sliding the movable air duct, the overlap between the first and second air outlets can be adjusted, thereby adjusting the airflow of the side air duct.

[0025] Furthermore, the heating furnace mechanism also includes a side air duct adjustment mechanism, which drives the side air duct to move linearly along a direction perpendicular to the conveyor.

[0026] Furthermore, the side air duct adjustment mechanism includes:

[0027] A lead screw nut, which is fixedly installed on the side air duct;

[0028] The lead screw is horizontally and perpendicular to the conveyor and is threadedly engaged with the lead screw nut.

[0029] By rotating the lead screw, the side air duct is linearly displaced, thereby moving the side air duct left and right within the furnace tunnel, thus adjusting the position of the side air duct.

[0030] Furthermore, the inner side of the furnace tunnel is also covered with insulation boards.

[0031] Insulation panels reduce the rapid loss of heat, thereby improving the product's shrinkage effect.

[0032] Furthermore, a cooling fan is provided above the conveyor near the furnace tunnel outlet end.

[0033] The cooling airflow generated at the outlet by the cooling fan blows onto the product, thereby lowering the surface area of ​​the heat shrink film and shortening the product setting time.

[0034] This utility model has the following advantages:

[0035] This invention divides the conveyor into multiple product channels by using side air ducts, and simultaneously introduces hot air into the product heating channel through the bottom air duct and side air ducts, so that the hot air covers the product from below and the side at the same time, so that the product packaging film is heated and shrinks in the product heating channel, thereby improving the uniformity of film shrinkage. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the heating furnace mechanism;

[0037] Figure 2 yes Figure 1 A partial structural schematic diagram of the heating furnace mechanism shown.

[0038] Figure 3 yes Figure 2 An enlarged schematic diagram of part A of the heating furnace mechanism shown;

[0039] Figure 4 yes Figure 3 An enlarged schematic diagram of part B of the heating furnace mechanism shown;

[0040] Figure 5 yes Figure 3A partial structural diagram of the side air duct in the heating furnace mechanism shown;

[0041] Figure 6 yes Figure 5 An enlarged schematic diagram of part of the side air duct structure C shown;

[0042] Figure 7 yes Figure 3 A partial structural schematic diagram of the side air duct adjustment mechanism in the heating furnace shown;

[0043] Figure 8 yes Figure 3 A schematic diagram of the first part of the bottom air duct in the heating furnace mechanism shown;

[0044] Figure 9 yes Figure 8 A schematic diagram of the second part of the bottom air duct structure is shown.

[0045] In the picture:

[0046] 100. Furnace body tunnel; 110. Insulation board;

[0047] 200. Conveyor;

[0048] 300. Cooling fan;

[0049] 400. Fan;

[0050] 500. Heating device; 510. Housing; 511. Housing air outlet; 520. Heater; 530. Air outlet duct; 540. Baffle plate; 550. Rotating shaft;

[0051] 600. Air outlet adjustment lever;

[0052] 700. Side air duct adjustment mechanism; 710. Lead screw and nut; 720. Lead screw;

[0053] 800. Bottom air duct; 810. Bottom air outlet panel; 820. Bottom air duct inlet; 830. Bottom air outlet adjustment lever; 840. Bottom wind deflector;

[0054] 900, Side air duct; 910, Side air duct inlet; 920, Movable air duct; 921, First air outlet; 930, Fixed air duct; 931, Waist-shaped hole; 932, Second air outlet; 940, Connector. Detailed Implementation

[0055] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0056] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0057] As described in the background section, traditional equipment often employs a single-channel blower system, where heated air is discharged unidirectionally from the bottom of the furnace. This unidirectional flow design results in uneven heat distribution across the packaging surface, especially for products with three-dimensional structures, where different parts experience significantly different amounts of heat.

[0058] Example 1:

[0059] Therefore, in order to solve the above-mentioned technical problems existing in the prior art, this embodiment provides a hot air heating furnace mechanism, such as... Figures 1-3 As shown, the heating furnace mechanism includes:

[0060] Furnace tunnel 100;

[0061] Conveyor 200 extends from one end of the furnace body to the other end of the furnace body. The conveyor drives the product from one end of the furnace body tunnel into the furnace body tunnel and sends the product out of the furnace body tunnel from one end of the furnace body.

[0062] Blower 400, wherein at least one set of blowers is provided, and at least one set of blowers is fixedly installed on the furnace body tunnel;

[0063] Heating mechanism 500, which is connected to the air outlet of the fan;

[0064] Bottom air duct 800, the bottom air duct is set at the bottom of the furnace body tunnel, and the bottom air duct is connected to the heating mechanism;

[0065] Side air duct 900, the side air duct is provided in at least one set, the at least one set of the side air duct is arranged in the furnace body tunnel and parallel to the conveyor on the conveyor to divide the conveyor into multiple product heating channels, the side air duct is connected to the heating mechanism.

[0066] In this embodiment, the product covered with a film is conveyed into the furnace tunnel by a conveyor. After the product enters the furnace tunnel, it is drawn into the product heating channel by the side airflow. Before this, the fan drives the airflow to form an airflow. The airflow is heated to a preset temperature when it passes through the heating mechanism. The heated airflow enters the product heating channel through the bottom airflow and the side airflow. The heated airflow acts on the product, causing the film covering the product to shrink due to heat. Finally, the product is output from the furnace tunnel outlet by the conveyor.

[0067] In this embodiment, the conveyor is divided into multiple product channels by side air ducts, and hot air is simultaneously introduced into the product heating channel through the bottom air duct and side air ducts, so that the hot air covers the product from below and the side at the same time, so that the product packaging film is heated and shrinks in the product heating channel, which improves the uniformity of film shrinkage and production efficiency.

[0068] For example, such as Figure 4 As shown, the heating mechanism includes:

[0069] The housing 510 is connected to the air outlet of the fan, and a heater 520 is installed inside the housing.

[0070] The wind baffle 540 is integrally installed inside the air outlet 511 of the box body and is rotatably connected to the air outlet of the box body. The wind baffle is connected to the air outlet adjustment lever 600 located outside the furnace body tunnel via a rotating shaft 550.

[0071] Air outlet duct 530, which is located on the outside of the box and connected to the air outlet of the box.

[0072] In this embodiment, the angle of the baffle plate is adjusted by rotating the baffle plate using the air outlet adjustment lever. By adjusting the angle of the baffle plate, the opening of the air outlet of the box can be adjusted, thereby adjusting the air volume of the fan.

[0073] For example, such as Figure 8 , 9 As shown, the bottom air duct includes:

[0074] The bottom air outlet plate 810 has multiple bottom air outlet holes evenly arranged in the part corresponding to the conveyor. Bottom air duct inlets 820 are provided on both sides of the upper surface of the bottom air outlet plate and are connected to the air outlet duct.

[0075] The bottom baffle plate 840 is located below the bottom air outlet plate, corresponding to the product heating channel. The bottom baffle plate is rotatably connected to the bottom air outlet plate. The pivot of the bottom baffle plate and the bottom air outlet plate extends out of the outside of the bottom air duct and is connected to the bottom air outlet adjustment lever 830.

[0076] In this embodiment, the airflow heated by the heating mechanism enters the bottom air duct through the air outlet duct and the bottom air duct inlet in sequence, and flows into the product heating channel through the bottom air outlet hole of the bottom air outlet plate. By moving the bottom air outlet adjustment lever, the bottom baffle plate is rotated to adjust the angle of the bottom baffle plate, thereby realizing the airflow adjustment of each product heating channel.

[0077] In this embodiment, the bottom air outlet adjustment lever can be connected to the rotating shaft of the bottom wind deflector via a connecting rod.

[0078] For example, such as Figure 5 , 6 As shown, the side air duct includes:

[0079] The movable air duct 920 has first side air outlets 921 evenly arranged on at least one side wall, and a side air duct inlet 910 is also provided on the movable air duct, which is connected to the air outlet duct.

[0080] A fixed air duct 930 is wrapped around the outside of the movable air duct. A second air outlet 931 is provided on the side wall of the fixed air duct corresponding to the first air outlet of the movable air duct. The first air outlet and the second air outlet are connected. The movable air duct moves linearly relative to the fixed air duct along the arrangement direction of the side air duct.

[0081] For example, the fixed air duct has an oblong hole 931, and a connector passes through the oblong hole from the outside of the fixed air duct and connects to the movable air duct so that the fixed air duct and the movable air duct remain fixed.

[0082] In this embodiment, the airflow heated by the heating mechanism enters the movable air duct through the air outlet duct and the side air duct inlet in sequence, and flows into the product heating channel through the first air outlet and the second air outlet in sequence. By sliding the movable air duct, the overlap between the first side air outlet and the second air outlet can be adjusted, thereby adjusting the airflow of the side air duct.

[0083] In this embodiment, the sidewall of the movable air duct is in contact with the sidewall of the fixed air duct. The connecting member can be a bolt, which is threadedly connected to the movable air duct. By rotating the bolt, the movable air duct and the fixed air duct are locked together to achieve relative fixation between the fixed air duct and the movable air duct.

[0084] In this embodiment, as Figure 3 As shown, the heating furnace mechanism may further include a side air duct adjustment mechanism 700, which drives the side air duct to move linearly in a direction perpendicular to the conveyor.

[0085] For example, such as Figure 7 As shown, the side air duct adjustment mechanism includes:

[0086] A lead screw nut 710 is fixedly installed on the side air duct;

[0087] The lead screw 710 is horizontally and perpendicular to the conveyor and is threadedly engaged with the lead screw nut.

[0088] In this embodiment, the side air duct is linearly displaced by rotating the lead screw, thereby moving the side air duct left and right within the furnace tunnel and adjusting its position.

[0089] For example, such as Figure 7 As shown, three sets of side air ducts can be set, forming a product heating channel between adjacent side air ducts. The movable and fixed air ducts of the two outer sets of side air ducts have first and second air outlets respectively on their side walls near the product heating channel. The side walls of the middle set of side air ducts have first and second air outlets on both sides. The side air duct adjustment mechanism has two sets of screws. One set of screws is threaded into the screw nuts of the two outer sets of side air ducts, and the other set of screws is threaded into the screw nuts of the middle set of side air ducts. By rotating the screws connected to the two outer sets of side air ducts, the two outer sets of side air ducts can be moved left and right simultaneously, and the movement directions of the two outer sets of side air ducts are opposite. At this time, the width of the product heating channel can be adjusted. If the screw connected to the middle set of side air ducts is rotated, it can be moved to one side, making it closer to the preset distance of the outer set of side air ducts, thereby realizing the conversion of the heating furnace mechanism from a dual-channel to a single-channel.

[0090] Of course, in addition to the above adjustment methods, the lead screw can also be connected to the lead screw nuts of all side air ducts at the same time. By rotating the lead screw, all side air ducts can be driven to move in the same direction, thereby realizing the offset of the product heating channel.

[0091] In this embodiment, an insulation board 110 is also provided inside the furnace tunnel. The insulation board is filled with a certain thickness of insulation material. The insulation board reduces the rapid loss of heat, thereby improving the product shrinkage effect.

[0092] In this embodiment, a cooling fan 300 is provided above the conveyor near the outlet end of the furnace tunnel. The cooling airflow formed by the cooling fan at the outlet end blows onto the product, thereby lowering the surface area of ​​the heat shrink film and shortening the product setting time.

[0093] In addition, a temperature sensor can be installed to detect the airflow temperature. The temperature sensor detects the airflow temperature to generate an electrical signal, which is fed back to the heating mechanism to adjust the heating power of the heating mechanism.

[0094] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot air heating furnace mechanism, characterized in that, include: Furnace tunnel; The conveyor extends from one end of the furnace body to the other end. The conveyor drives the product from one end of the furnace body tunnel into the furnace body tunnel and from the other end of the furnace body out of the furnace body tunnel. The fan is provided in at least one set, and the at least one set of the fans is fixedly installed on the furnace body tunnel; A heating mechanism, which is connected to the air outlet of a fan; The bottom air duct is integrally set at the bottom of the furnace body tunnel and is connected to the heating mechanism. The side air duct is provided in at least one set. The at least one set of side air ducts is arranged in the furnace body tunnel and parallel to the conveyor on the conveyor to divide the conveyor into multiple product heating channels. The side air duct is connected to the heating mechanism.

2. The hot air heating furnace mechanism according to claim 1, characterized in that, The heating mechanism includes: The housing is connected to the air outlet of the fan, and a heater is installed inside the housing. The wind baffle is integrally installed inside the air outlet of the box body and is rotatably connected to the air outlet of the box body. The wind baffle is connected to the air outlet adjustment lever located outside the furnace body tunnel via a rotating shaft. The air outlet duct is located on the outside of the housing and is connected to the air outlet of the housing.

3. The hot air heating furnace mechanism according to claim 1, characterized in that, The bottom air duct includes: The bottom air outlet plate has multiple bottom air outlet holes evenly arranged in the part corresponding to the conveyor. Bottom air duct inlets are provided on both sides of the upper surface of the bottom air outlet plate, and the bottom air duct inlets are connected to the air outlet pipe. The bottom baffle plate is located below the bottom air outlet plate, corresponding to the product heating channel. The bottom baffle plate is rotatably connected to the bottom air outlet plate. The pivot of the bottom baffle plate and the bottom air outlet plate extends out of the outside of the bottom air duct and is connected to the bottom air outlet adjustment lever.

4. The hot air heating furnace mechanism according to claim 1, characterized in that, The side air duct includes: The movable air duct has first side air outlets evenly arranged on at least one side wall, and a side air duct inlet is also provided on the movable air duct, which is connected to the air outlet duct. A fixed air duct is wrapped around the outside of the movable air duct. A second air outlet is provided on the side wall of the fixed air duct corresponding to the first air outlet of the movable air duct. The first air outlet and the second air outlet are connected. The movable air duct moves linearly relative to the fixed air duct along the arrangement direction of the side air duct.

5. A hot air heating furnace mechanism according to claim 4, characterized in that, The fixed air duct has an oblong hole, and a connector passes through the oblong hole from the outside of the fixed air duct to connect with the movable air duct, so that the fixed air duct and the movable air duct remain fixed.

6. The hot air heating furnace mechanism according to claim 1, characterized in that, The heating furnace mechanism also includes a side air duct adjustment mechanism, which drives the side air duct to move linearly in a direction perpendicular to the conveyor.

7. A hot air heating furnace mechanism according to claim 6, characterized in that, The side air duct adjustment mechanism includes: A lead screw nut, which is fixedly installed on the side air duct; The lead screw is horizontally and perpendicular to the conveyor and is threadedly engaged with the lead screw nut.

8. The hot air heating furnace mechanism according to claim 1, characterized in that, The inside of the furnace tunnel is also covered with insulation boards.

9. A hot air heating furnace mechanism according to claim 1, characterized in that, A cooling fan is installed above the conveyor near the outlet end of the furnace tunnel.

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