阅读说明：本技术 烘箱装置及窜风阻尼结构 (Oven device and wind channeling damping structure ) 是由 何汉昭 梁达辉 汤智勇 于 2019-10-18 设计创作，主要内容包括：本发明涉及一种烘箱装置及窜风阻尼结构,两个扰流板设置于薄膜输送通道的出入口处的两侧,一方面提高腔室环境的密闭性,避免薄膜输送通道内的热气流向外流,另一方面,薄膜输送通道内的热气流流动经过两个扰流板时,扰流板的凹部起到降低热气流的流速的作用,能避免例如相邻两个烘箱单元之间、烘箱单元的薄膜进出口与外界环境之间空气窜流干扰,这样相邻烘箱单元内的热气流的温度相互影响较小,以及减小外部环境的空气将干扰到腔室的内部环境的温度,最终实现烘箱单元所对应的温度场符合于工艺要求,使得薄膜输送通道内的温度易于精确控制,保证高分子薄膜的处理质量。(The invention relates to a baking oven device and a wind-channeling damping structure, wherein two spoilers are arranged at two sides of an inlet and an outlet of a film conveying channel, on one hand, the airtightness of a cavity environment is improved, hot air in the film conveying channel is prevented from flowing outwards, on the other hand, when the hot air in the film conveying channel flows through the two spoilers, the concave part of the spoiler plays a role in reducing the flow velocity of hot air flow, and can avoid air cross flow interference between two adjacent oven units and between a film inlet and a film outlet of the oven units and the external environment, so that the mutual influence of the temperatures of the hot air flows in the adjacent oven units is small, and the temperature of the internal environment of the chamber, which is interfered by the air of the external environment, is reduced, finally the temperature field corresponding to the oven unit meets the process requirement, the temperature in the film conveying channel is easy to control accurately, and the processing quality of the polymer film is ensured.)

1. A blow-by damping structure, comprising:

the two cavity beams are arranged at intervals, are respectively arranged at the inlet and the outlet of a film conveying channel of the oven unit and are respectively positioned at two sides of the film conveying channel;

the two spoilers are arranged on two sides of an inlet and an outlet of the film conveying channel respectively at intervals, concave parts are arranged on the side faces, facing the film conveying channel, of the spoilers, the distance between the bottom walls of the concave parts of the two spoilers is larger than the thickness of the film conveying channel, one side part of each spoiler is used for being connected with the pipe wall of an air supply pipe of the oven unit, and the other side part of each spoiler is connected with the side wall of the cavity beam.

2. The blow-by damping structure according to claim 1, further comprising a venting assembly; the cavity beam is provided with an airflow chamber, the beam wall of the cavity beam facing the film conveying channel is provided with an air suction opening communicated with the airflow chamber, the airflow chamber is communicated with the air exhaust assembly, and the air exhaust assembly is used for discharging hot air in the airflow chamber to the external environment.

3. An oven apparatus characterized by the blow-by damping structure as recited in claim 1 or 2.

4. The oven device according to claim 3, further comprising more than two oven units arranged in sequence, wherein the wind channeling damping structure is arranged between two adjacent oven units, the oven units are provided with a film conveying channel for a polymer film to pass through, and the two cavity beams and the two spoilers are respectively arranged on two sides of the film conveying channel.

5. The oven apparatus of claim 4, wherein the oven unit further comprises a stack of air ducts and a suction mechanism; the utility model discloses a film conveying device, including tuber pipe group, suction mechanism, film conveying channel, suction mechanism, tuber pipe group is two and interval setting, two interval between the tuber pipe group is film conveying channel, tuber pipe group towards a plurality of exhaust vent has been seted up on film conveying channel's the pipe wall, suction mechanism is used for right tuber pipe group exhaust hot-blast back suction is handled.

6. The oven device as claimed in claim 5, wherein the air outlet direction of the air outlet hole on the air pipe group closest to the cavity beam is obliquely arranged relative to the conveying direction of the film conveying channel, and the air outlet direction of the air outlet hole on the air pipe group closest to the cavity beam is deviated from the cavity beam.

7. The oven device as claimed in claim 5, wherein the air duct group comprises more than two air supply ducts arranged at intervals, and the air outlet holes are arranged on the walls of the air supply ducts facing the film conveying channel.

8. The oven device of claim 7, wherein a suction end of the suction mechanism is connected with a suction hood; the air suction covers are four, wherein two air suction covers are respectively arranged at one of the two ends of the side surface of the air pipe group, back to the other air pipe group, the cover openings of the two air suction covers are oppositely arranged, the other two air suction covers are respectively arranged at the other end of the side surface of the air pipe group, back to one air pipe group, and the cover openings of the other two air suction covers are oppositely arranged.

9. The oven device of claim 8, wherein the suction mechanism comprises a static pressure box and a fan arranged on the static pressure box, the static pressure box is provided with an air return opening and an air outlet, the air return opening is communicated with the air suction cover, and the air outlet is communicated with the air inlet end of the blast pipe; the two suction mechanisms are respectively arranged at two ends of the air pipe group, one end of each air pipe group is communicated with the static pressure tank of one suction mechanism, and the other end of each air pipe group is communicated with the static pressure tank of the other suction mechanism; the oven unit further comprises a heater, and the heater is arranged on the static pressure box or the air suction cover.

10. The oven device according to claim 8, further comprising a top plate, a bottom plate and two end plates, wherein two ends of the top plate and two ends of the bottom plate are respectively connected with the two end plates, the two air duct sets are arranged between the top plate and the bottom plate in an up-and-down interval manner, two air suction hoods are arranged in an interval between one of the air duct sets and the top plate, and the other two air suction hoods are arranged in an interval between the other air duct set and the bottom plate.

Technical Field

The invention relates to the technical field of drying ovens, in particular to a drying oven device and a wind channeling damping structure.

Background

The film stretching production line oven is used for providing proper process conditions for the polymer film and stretching and shaping the film in a high-temperature environment. After constant-temperature heating airflow in a cavity of an oven of a traditional film stretching production line is conveyed to two surfaces of a film, the constant-temperature heating airflow is sucked back through a negative pressure through air suction ports in the middle of static pressure boxes on two sides of the cavity, and sucked hot airflow is heated, pressurized through the static pressure boxes and conveyed to a film area in the cavity; besides, the outer cavity is internally provided with a ventilating exhaust port and an air supply port which are arranged on one side of the cavity and used for exhausting precipitates in the heating process of the film. Each area of the film stretching production line oven is provided with a film channel, and the polymer film sequentially enters the film channels of each area to contact with hot air flow for heat treatment. On the one hand, however, the membrane channels of adjacent areas have the undesirable phenomenon of mutual wind channeling, and the temperatures in the membrane channels of adjacent areas will interfere with each other; on the other hand, there is a problem that the internal environment of the chamber and the inlet and outlet of the chamber blow by each other, and the air in the external environment interferes with the temperature of the internal environment of the chamber. This results in the temperature in the membrane channel being difficult to control accurately, which ultimately affects the quality of the polymer membrane.

Disclosure of Invention

Accordingly, it is necessary to overcome the defects of the prior art and provide an oven device and a blow-by damping structure, which can reduce the blow-by interference and improve the processing quality of the polymer film.

The technical scheme is as follows: a blow-by damping structure comprising: the two cavity beams are arranged at intervals, are respectively arranged at the inlet and the outlet of a film conveying channel of the oven unit and are respectively positioned at two sides of the film conveying channel; the two spoilers are arranged on two sides of an inlet and an outlet of the film conveying channel respectively at intervals, concave parts are arranged on the side faces, facing the film conveying channel, of the spoilers, the distance between the bottom walls of the concave parts of the two spoilers is larger than the thickness of the film conveying channel, one side part of each spoiler is used for being connected with the pipe wall of an air supply pipe of the oven unit, and the other side part of each spoiler is connected with the side wall of the cavity beam.

In the wind channeling damping structure, the two spoilers are arranged at the two sides of the inlet and the outlet of the film conveying channel, so that on one hand, the airtightness of the cavity environment is improved, and the hot air in the film conveying channel is prevented from flowing outwards, on the other hand, when the hot air in the film conveying channel flows through the two spoilers, the concave parts of the spoilers play a role in reducing the flow velocity of the hot air, and the air channeling interference between two adjacent oven units and between the film inlet and the film outlet of the oven units and the external environment can be avoided, so that the mutual influence of the temperatures of the hot air in the adjacent oven units is small, the temperature of the internal environment of the cavity is reduced, and finally, the temperature field corresponding to the oven units meets the process requirements, the temperature in the film conveying channel is easy to accurately control, and the treatment quality of the high polymer film is ensured.

In one embodiment, the blow-by damping structure further comprises a venting assembly; the cavity beam is provided with an airflow chamber, the beam wall of the cavity beam facing the film conveying channel is provided with an air suction opening communicated with the airflow chamber, the airflow chamber is communicated with the air exhaust assembly, and the air exhaust assembly is used for discharging hot air in the airflow chamber to the external environment.

An oven device comprises the wind channeling damping structure.

The oven device comprises the wind channeling damping structure, the technical effect of the oven device is brought by the wind channeling damping structure, and the beneficial effects of the oven device are the same as those of the wind channeling damping structure and are not repeated herein.

In one embodiment, the oven device further includes two or more oven units arranged in sequence, the wind channeling damping structure is arranged between two adjacent oven units, the oven units are provided with film conveying channels for polymer films to pass through, and the two cavity beams and the two spoilers are respectively arranged on two sides of the film conveying channels.

In one embodiment, the oven unit further comprises a wind pipe set and a suction mechanism; the utility model discloses a film conveying device, including tuber pipe group, suction mechanism, film conveying channel, suction mechanism, tuber pipe group is two and interval setting, two interval between the tuber pipe group is film conveying channel, tuber pipe group towards a plurality of exhaust vent has been seted up on film conveying channel's the pipe wall, suction mechanism is used for right tuber pipe group exhaust hot-blast back suction is handled.

In one embodiment, the air outlet direction of the air outlet hole closest to the cavity beam on the air pipe group is obliquely arranged relative to the conveying direction of the film conveying channel, and the air outlet direction of the air outlet hole closest to the cavity beam on the air pipe group deviates from the cavity beam.

In one embodiment, the air duct group comprises more than two air supply ducts arranged at intervals, and the air outlet holes are arranged on the walls of the air supply ducts facing the film conveying channel.

In one embodiment, the suction end of the suction mechanism is connected with a suction hood; the air suction covers are four, wherein two air suction covers are respectively arranged at one of the two ends of the side surface of the air pipe group, back to the other air pipe group, the cover openings of the two air suction covers are oppositely arranged, the other two air suction covers are respectively arranged at the other end of the side surface of the air pipe group, back to one air pipe group, and the cover openings of the other two air suction covers are oppositely arranged.

In one embodiment, the suction mechanism comprises a static pressure box and a fan arranged on the static pressure box, the static pressure box is provided with an air return opening and an air outlet, the air return opening is communicated with the air suction cover, and the air outlet is communicated with the air inlet end of the blast pipe; the two suction mechanisms are respectively arranged at two ends of the air pipe group, one end of each air pipe group is communicated with the static pressure tank of one suction mechanism, and the other end of each air pipe group is communicated with the static pressure tank of the other suction mechanism; the oven unit further comprises a heater, and the heater is arranged on the static pressure box or the air suction cover.

In one embodiment, the oven device further comprises a top plate, a bottom plate and two end plates, wherein two ends of the top plate and two ends of the bottom plate are respectively connected with the two end plates, the two air duct groups are arranged between the top plate and the bottom plate at intervals up and down, the two air suction covers are positioned in an interval between one of the air duct groups and the top plate, and the other two air suction covers are positioned in an interval between the other air duct group and the bottom plate.

Drawings

Fig. 1 is a schematic view of a blow-by damping structure according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an oven apparatus according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an oven unit according to an embodiment of the present invention;

fig. 4 is a schematic structural view of an air guiding mechanism according to an embodiment of the present invention;

fig. 5 is a schematic view of a blow-by damping structure according to another embodiment of the present invention;

FIG. 6 is a top view of an oven unit according to an embodiment of the present invention;

FIG. 7 is a top view of an oven unit according to another embodiment of the present invention;

fig. 8 is a top view of an oven unit according to yet another embodiment of the present invention.

Reference numerals:

10. an oven unit; 11. a wind pipe group; 111. an air supply pipe; 1111. an air outlet; 1112. a baffle; 12. an air suction hood; 13. a suction mechanism; 131. a static pressure box; 132. a fan; 14. a top plate; 15. a base plate; 16. an end panel; 17. an air guide mechanism; 171. a balance plate; 1711. a wind guide hole; 172. a collector plate; 1721. a first bending plate; 1722. a second bending plate; 18. a heater; 20. a cavity beam; 21. an air suction opening; 30. a film transport channel; 40. a polymer film; 50. an air exhaust assembly; 51. a main exhaust pipe; 52. an exhaust branch pipe; 60. an air supply assembly; 61. a main air supply pipe; 62. an air supply branch pipe; 70. a spoiler; 71. a recess; 80. a baffle plate; 90. a flow regulating valve.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the description of the present invention, it should be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.

In one embodiment, referring to fig. 1 to 4, a wind-break damping structure includes two cavity beams 20 spaced apart from each other and two spoilers 70 spaced apart from each other. The two cavity beams 20 are respectively arranged at the inlet and outlet of the film conveying channel 30 of the oven unit 10 and are respectively positioned at two sides of the film conveying channel 30. The two spoilers 70 are respectively disposed at two sides of the inlet and outlet of the film conveying channel 30, a concave portion 71 is disposed on a side surface of the spoiler 70 facing the film conveying channel 30, a distance S between bottom walls of the concave portions 71 of the two spoilers 70 is greater than a thickness D of the film conveying channel 30, one side portion of the spoiler 70 is used for being connected with a tube wall of the air supply pipe 111 of the oven unit 10, and the other side portion of the spoiler 70 is connected with a side wall of the cavity beam 20.

In the wind-channeling damping structure, the two spoilers 70 are disposed at both sides of the inlet and outlet of the film conveying channel 30, so that on one hand, the sealing property of the chamber environment is improved, and the hot air in the film conveying channel 30 is prevented from flowing outwards, and on the other hand, when the hot air in the film conveying channel 30 flows through the two spoilers 70, the concave portion 71 of the spoiler 70 functions to reduce the flow rate of the hot air flow, and can prevent the air channeling interference between, for example, two adjacent oven units 10 and between the film inlet/outlet of the oven unit 10 and the external environment, so that the mutual influence of the temperatures of the hot air flows in the adjacent oven units 10 is small, and the temperature of the internal environment of the chamber, which is interfered by the air of the external environment, is reduced, finally the temperature field corresponding to the oven unit 10 is realized to meet the process requirement, the temperature in the film conveying channel 30 is easy to control accurately, and the processing quality of the polymer film 40 is ensured.

It should be noted that the thickness D of the film conveying passage 30 is as shown in fig. 1, and specifically, the spacing distance between the two air duct groups 11.

Further, referring to fig. 2 and 5, the wind channeling damping structure further includes a wind discharging assembly 50. The cavity beam 20 is provided with an airflow chamber, and the beam wall of the cavity beam 20 facing the film conveying channel 30 is provided with an air suction opening 21 communicated with the airflow chamber. The airflow chamber is in communication with the exhaust assembly 50. The exhaust assembly 50 is used to exhaust the hot air in the airflow chamber to the external environment. Thus, the high polymer film 40 is easy to discharge high concentration deposition in the heating process contacting with hot air flow, and a part of the hot air flow containing high concentration deposition flows into the air flow chamber through the air suction opening 21 and is discharged to the external environment through the air exhaust assembly 50.

In one embodiment, referring to fig. 1 to 4, an oven apparatus includes the hot wind damping structure according to any one of the above embodiments.

The oven device comprises the wind channeling damping structure, the technical effect of the oven device is brought by the wind channeling damping structure, and the beneficial effects of the oven device are the same as those of the wind channeling damping structure and are not repeated herein.

In one embodiment, referring again to fig. 2, the oven apparatus illustrated in fig. 2 has only one oven unit 10, and the remaining oven units 10 are omitted from illustration. The oven device further comprises more than two oven units 10 which are sequentially arranged, the wind channeling damping structure is arranged between every two adjacent oven units 10, the oven units 10 are provided with film conveying channels 30 for polymer films 40 to penetrate through, and the two cavity beams 20 and the two spoilers 70 are respectively arranged on two sides of the film conveying channels 30.

Referring to fig. 5 again, it should be noted that, for two adjacent oven units 10, two spoilers 70 are disposed at intervals between the entrance and exit of the film conveying channel 30 of each oven unit 10 and the cavity beam 20.

Therefore, air channeling interference between two adjacent oven units 10 can be avoided better, mutual influence of the temperatures of hot air flows in the adjacent oven units 10 is small, and finally the temperature field corresponding to the oven unit 10 meets the process requirement, so that the temperature in the film conveying channel 30 is easy to control accurately, and the processing quality of the high polymer film 40 is ensured.

In a specific embodiment, two cavity beams 20 are disposed on two sides of each oven unit 10, and the two cavity beams 20 on two sides of each oven unit 10 block hot air in the area of the oven unit 10, so as to prevent the hot air in the area of the oven unit 10 from flowing outwards to some extent.

In one embodiment, the oven unit 10 further comprises a stack of air ducts 11 and a suction mechanism 13. The air duct group 11 is two and the interval sets up, two interval between the air duct group 11 is film transfer passage 30, the air duct group 11 includes two or more blast pipes 111 that the interval set up, seted up on the pipe wall of blast pipe 111 towards film transfer passage 30's a plurality of exhaust vent 1111. The suction mechanism 13 is used for sucking back the hot air flow discharged from the blower pipe 111.

Further, a suction end of the suction mechanism 13 is connected with a suction hood 12. The number of the suction hoods 12 is four, two of the suction hoods 12 are respectively arranged at one of the two ends of the side surface of the air pipe group 11, which are opposite to each other, of the air pipe group 11, the other two suction hoods 12 are respectively arranged at the other ends of the side surface of the air pipe group 11, which are opposite to each other, of the air pipe group 11, and the other two cover openings of the suction hoods 12 are opposite to each other. Thus, when in use, the polymer film 40 passes through the gap between the two air duct sets 11, and the hot air in the air duct sets 11 flows through the air outlet 1111 to contact the polymer film 40, so that both sides of the polymer film 40 can be heat-treated. After the hot air flow contacts the polymer film 40, the hot air flow enters the two air suction hoods 12 at the two ends of the air supply pipe 111 under the suction action of the suction mechanism 13. Because the two air suction covers 12 are respectively arranged at the two ends of the air duct group 11, after the hot air flow contacts the polymer film 40, the hot air flow flows in the direction away from the polymer film 40, flows outwards through the interval between the two adjacent air supply pipes 111 and finally enters the air suction cover 12, so that the mutual interference between the hot air flow flowing out of the air outlet 1111 of the air supply pipe 111 and the hot air flow returning to the air suction cover 12 can be well avoided, namely, the turbulence phenomenon generated in the polymer film 40 area can be well inhibited, and thus, the flow of the hot air flow contacting each part of the polymer film 40 can be relatively balanced.

Specifically, referring to fig. 2 and fig. 3, the blowing pipes 111 of one of the air pipe groups 11 are arranged in a one-to-one correspondence with the blowing pipes 111 of the other air pipe group 11. Thus, when the hot air flow sent out by the blowing pipe 111 of one of the air pipe groups 11 acts on one side surface of the polymer film 40, and the hot air flow sent out by the blowing pipe 111 of the other air pipe group 11 acts on the other side surface of the polymer film 40, because the blowing pipes 111 of the two air pipe groups 11 are correspondingly arranged one by one and have symmetrical structures, the two side surfaces of the polymer film 40 can be subjected to symmetrical heat exchange treatment, and the heat treatment quality of the polymer film 40 is high.

In one embodiment, referring to fig. 2 and 3 again, the suction mechanism 13 includes a static pressure box 131 and a fan 132 disposed on the static pressure box 131. The static pressure box 131 is provided with an air return opening and an air outlet, the air return opening is communicated with the air suction cover 12, and the air outlet is communicated with the air inlet end of the blast pipe 111. Thus, when the fan 132 works, a negative pressure is formed at the air return opening of the static pressure box 131, the hot air flowing out of the air duct group 11 can be recovered by the air suction cover 12, the recovered hot air flows through the air outlet and is sent into each air supply pipe 111 of the air duct group 11, and the recovered hot air is discharged from the air supply pipe 111 and contacts the polymer film 40, so that the effect of heating the polymer film 40 is achieved, namely, an internal circulation hot air path for air return and air supply is formed, and the heat energy of the hot air is fully utilized.

In one embodiment, referring to fig. 2 and fig. 3 again, there are two pumping mechanisms 13, and the two pumping mechanisms 13 are respectively disposed at two ends of the wind pipe group 11. One end of each of the two air duct groups 11 is communicated with the static pressure tank 131 of one of the suction mechanisms 13, and the other end of each of the two air duct groups 11 is communicated with the static pressure tank 131 of the other suction mechanism 13. Thus, when the two suction mechanisms 13 work synchronously, one of the suction mechanisms 13 synchronously utilizes the two suction hoods 12 at one end of the two air duct assemblies 11 to recover the hot air flows discharged by the two air duct assemblies 11 respectively, and the other suction mechanism 13 synchronously utilizes the two suction hoods 12 at the other end of the two air duct assemblies 11 to recover the hot air flows discharged by the two air duct assemblies 11 respectively.

More specifically, referring to fig. 2 and 3, under the condition that two air duct groups 11 are arranged in a vertically symmetrical manner, two air suction covers 12 are arranged on the upper sides of the two air duct groups 11 in a symmetrical manner and oppositely, and the other two air suction covers 12 are arranged on the lower sides of the two air duct groups 11 in a symmetrical manner and oppositely, four circulation air loops are formed in a symmetrical manner, so that the turbulence phenomenon generated in the area of the polymer film 40 can be well suppressed, the stability of the hot air flow is good, the hot air flow contacting each part of the polymer film 40 can be balanced, and the processing quality of the polymer film 40 can be ensured.

In one embodiment, referring again to fig. 2 and 3, the oven unit 10 further includes a heater 18. The heater 18 is disposed on the static pressure box 131 or on the suction hood 12. Therefore, the heater 18 can heat the hot air flow, so that the heat loss of the hot air flow in the process of heating the polymer film 40 is supplemented, the temperature of the hot air flow is ensured to be within a preset range, and the processing quality of the polymer film 40 is ensured. The specific structure of the heater 18 is not limited, and may be, for example, a heating wire, a heating rod, a heating pipe, a heat exchanger, or the like.

Further, referring to fig. 2 and 3, the oven unit 10 further includes a top plate 14, a bottom plate 15 and two end plates 16. Both ends of the top plate 14 and both ends of the bottom plate 15 are respectively connected to the two end plates 16. Two of the air duct groups 11 are disposed between the top plate 14 and the bottom plate 15 at intervals, two of the air suction hoods 12 are located in an interval between one of the air duct groups 11 and the top plate 14, and the other two air suction hoods 12 are located in an interval between the other air duct group 11 and the bottom plate 15. Thus, when the two suction hoods 12 above the air duct group 11 pump the hot air flow above the polymer film 40 upward, the hot air flow is guided by the top plate 14 to be received into the suction hoods 12, and when the hot air flow below the polymer film 40 is pumped downward by the two suction hoods 12 below the air duct group 11, the hot air flow is guided by the bottom plate 15 to be received into the suction hoods 12.

Furthermore, in order to make the structure of the oven unit 10 more compact, the plenum box 131 of the suction mechanism 13 is disposed between the top plate 14 and the bottom plate 15, and the back plate of the plenum box 131 may be integrally formed with the end plate 16, or the end plate 16 may be attached to the back plate of the plenum box 131.

In one embodiment, referring to fig. 3 and 4, the oven unit 10 further includes a wind guide mechanism 132 disposed in a space between two adjacent air supply pipes 111. The air guide mechanism 132 includes a balance plate 171 and two collecting plates 172, and the balance plate 171 is provided with a plurality of air guide holes 1711. Two current collecting plate 172 is located the same one side of balance plate 171, two the one end of current collecting plate 172 respectively with balance plate 171's both ends correspond continuously, two current collecting plate 172's other end interval sets up, current collecting plate 172 for balance plate 171 slope sets up, and two interval between current collecting plate 172 is keeping away from in balance plate 171's direction reduces gradually. That is, two current collecting plates 172 are arranged in a "chevron" shape on one side of the balance plate 171. Thus, when the reflowing hot air flows through the gap between two adjacent air supply pipes 111, the hot air flows through the balance plate 171 first, and the hot air flows back more stably under the guiding balance action of the balance plate 171, so as to better suppress the turbulence phenomenon generated in the area of the polymer film 40. After being guided and balanced by the balance plate 171, the hot air is further converged by the two current collecting plates 172, so that the hot air can be better converged and flows back into the air suction hood 12.

Further, referring to fig. 3 and 4, the transmittance of the middle portion of the balance plate 171 gradually increases to the end portion of the balance plate 171. Thus, the hot air flow can be stably refluxed, and the turbulent flow phenomenon generated in the region of the polymer film 40 can be suppressed.

Further, referring to fig. 3 and 4, the concentration of the air guiding holes 1711 at the middle portion of the balancing plate 171 is less than that of the air guiding holes 1711 at the end portions of the balancing plate 171. Alternatively, the concentration of the air guide holes 1711 of the balance plate 171 gradually increases from the middle portion of the balance plate 171 to the end portion of the balance plate 171. Thus, the hot air flow can be stably refluxed, and the turbulent flow phenomenon generated in the region of the polymer film 40 can be suppressed.

Further, referring to fig. 3 and 4, the aperture of the air guiding hole 1711 at the middle portion of the balancing plate 171 is smaller than the aperture of the air guiding hole 1711 at the end portion of the balancing plate 171. Alternatively, the hole diameter of the air guide hole 1711 of the balance plate 171 gradually increases from the middle portion of the balance plate 171 to the end portion of the balance plate 171. Thus, the hot air flows can be made to flow back relatively stably, and the turbulent flow phenomenon generated in the region of the polymer film 40 can be suppressed well.

Further, referring to fig. 3 and 4, the length of the balance plate 171 (the length direction of the balance plate 171 is indicated by an arrow in fig. 3) is not less than the width of the polymer film 40 to be heat-treated. The edges of the two sides of the balance plate 171 and the current collecting plate 172 are respectively in interference fit with the outer side tube walls of the two adjacent blast tubes 111. One end of the current collecting plate 172 is connected to the end of the balance plate 171 through a first bending plate 1721, and the other end of the current collecting plate 172 is provided with a second bending plate 1722. The surface of the first bending plate 1721 facing the balance plate 171 is, for example, an arc surface or a smooth curved surface, which is beneficial to smooth conveyance of hot air flow; the surface of the second bending plate 1722 facing the balancing plate 171 is, for example, an arc surface or a smooth curved surface, which facilitates smooth conveyance of the hot air flow to the suction hood 12.

Further, referring to fig. 2, the oven apparatus further includes an air supply assembly 60. The air inlet end of the air supply assembly 60 is communicated with the external environment, and the air outlet end of the air supply assembly 60 is arranged corresponding to the cover opening of the air suction cover 12. Thus, the high-concentration educt is easy to be discharged from the high-molecular film 40 in the heating process contacting with the hot air flow, one part of the hot air flow containing the high-concentration educt flows into the air flow chamber through the air suction opening 21 and is discharged to the external environment from the air exhaust assembly 50, the other part of the hot air flow flows back into the air suction hood 12, and meanwhile, the air supply assembly 60 supplements the fresh air of the external environment into the air suction hood 12 for circulation, so that the amount of the educt can be reduced, and the treatment quality of the high-molecular film 40 is improved.

Further, referring to fig. 2, the exhaust assembly 50 includes an exhaust main pipe 51, an exhaust branch pipe 52 and a negative pressure mechanism (not shown). The cavity beam 20 is communicated with the exhaust main pipe 51 through the exhaust branch pipe 52, and the negative pressure mechanism is used for pumping the gas in the exhaust main pipe 51 to the external environment.

Further, referring to fig. 2, the blowing assembly 60 includes a main blowing pipe 61, a branch blowing pipe 62 and a blower 132. The tip of the main pipe 61 of air supply with the forced draught blower 132 constructs and links to each other, the forced draught blower 132 constructs and is used for the air drum with external environment to go into in the main pipe 61 of air supply, the one end of air supply branch pipe 62 with the main pipe 61 of air supply links to each other, the other end of air supply branch pipe 62 set up in the side of the cover mouth of suction hood 12.

It can be understood that the number of the exhaust branch pipes 52 is more than one, the exhaust branch pipes 52 are correspondingly arranged according to the cavity beams 20, for example, each cavity beam 20 may be correspondingly provided with one, two, three or other number of exhaust branch pipes 52, so as to realize that the airflow chambers of the cavity beams 20 are communicated to the exhaust main pipe 51, and the exhaust main pipe 51 discharges a part of the hot airflow to the external environment uniformly. Similarly, the number of the air supply branch pipes 62 is more than one, and the air supply branch pipes 62 are correspondingly arranged according to the air suction hoods 12, for example, one, two, three or other numbers of air supply branch pipes 62 can be correspondingly arranged on each air suction hood 12, so that the fresh air of the external environment can be introduced together while the hot air flow is sucked and recovered by each air suction hood 12.

Further, referring to fig. 2 again, the exhaust branch pipes 52 and the air supply branch pipes 62 are provided with flow regulating valves 90, and the ventilation amount of each oven unit 10 can be adjusted according to actual conditions by regulating the flow regulating valves 90.

In one embodiment, referring to fig. 2 and 5, two baffles 80 are spaced between two of the cavity beams 20 spaced above and below. The two baffles 80 are respectively positioned at two ends of the space between the two cavity beams 20, and the space between the two baffles 80 can penetrate through the polymer film 40.

In one embodiment, referring to fig. 2 and 5, the air outlet direction of the air outlet 1111 of the air duct set 11 closest to the cavity beam 20 is inclined relative to the conveying direction of the film conveying channel 30, and the air outlet direction of the air outlet 1111 of the air duct set 11 closest to the cavity beam 20 is away from the cavity beam 20. In this way, the outlet air from the outlet hole 1111 of the duct group 11 closest to the cavity beam 20 can block the blow-by air flowing toward the cavity beam 20.

Further, referring to fig. 2 and 5, a baffle 1112 is disposed inside the air supply pipe 111 closest to the air outlet 1111 of the cavity beam 20 on the air pipe group 11, and the baffle 1112 is disposed obliquely with respect to the conveying direction of the film conveying passage 30. Optionally, the axial cross section of the blower tube 111 is octagonal.

In one embodiment, referring to fig. 2 and 5, the air suction opening 21 on the tube wall of the cavity beam 20 is, for example, a kidney-shaped hole, a rectangular hole, a square hole, or the like, and the shape thereof is not limited. The suction opening 21 generates a negative pressure, which can suck the hot air flow nearby the suction opening into the inside of the exhaust assembly 50 and discharge the hot air flow to the outside through the exhaust assembly 50 to the external environment. In addition, while the spoiler 70 obstructs the blow-by in the direction of the cavity beam 20, the air suction opening 21 can further remove the blow-by air quantity between the oven units 10, thereby preventing the mutual blow-by interference of the hot air flows between the oven units 10.

In an embodiment, referring to fig. 6, for one oven unit 10, two suction mechanisms 13 are respectively located at two ends of the air duct group 11, two static pressure boxes 131 are correspondingly located and respectively communicated with the suction ends of the suction mechanisms 13, wherein one static pressure box 131 is provided with more than two air outlets which are correspondingly communicated with one end of the air supply pipe 111, and the other static pressure box 131 is also provided with more than two air outlets which are correspondingly communicated with the other end of the air supply pipe 111. Thus, when the two suction mechanisms 13 work synchronously, one of the suction mechanisms 13 synchronously utilizes the two suction hoods 12 at one end of the two air duct assemblies 11 to recover the hot air flows discharged by the two air duct assemblies 11 respectively, and the other suction mechanism 13 synchronously utilizes the two suction hoods 12 at the other end of the two air duct assemblies 11 to recover the hot air flows discharged by the two air duct assemblies 11 respectively.

In another embodiment, referring to fig. 7, for one oven unit 10, two suction mechanisms 13 are respectively located at two ends of the air duct group 11, two static pressure boxes 131 are respectively located and respectively communicate with suction portions of the suction mechanisms 13, one of the static pressure boxes 131 is provided with one end of the air duct 111 communicating with one part of the air duct group 11, the other end of the air duct 111 of one part of the air duct group 11 is a closed end, the other static pressure box 131 is provided with one end of the air duct 111 communicating with the other part of the air duct group 11, and the other end of the air duct 111 of the other part of the air duct group 11 is a closed end.

In another embodiment, referring to fig. 8, for one oven unit 10, the suction mechanism 13 is one and located at one end of the air duct group 11, the static pressure box 131 is one and correspondingly communicated with a suction portion of the suction mechanism 13, the static pressure box 131 is provided with more than two air outlets which are correspondingly communicated with one end of the air supply duct 111, and the other end of the air supply duct 111 is a closed end.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.