Drying frame for paper processing

By designing an adjustable drying rack structure and ventilation system, the problem of traditional drying racks being unable to adapt to different cardboard sizes has been solved, achieving efficient and uniform cardboard drying, and improving production efficiency and product quality.

CN223925278UActive Publication Date: 2026-02-17HESHAN HUAQI PAPER PROD CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520595750.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-01
Publication Date
2026-02-17
Estimated Expiration
2035-04-01

AI Technical Summary

Technical Problem

Traditional cardboard drying racks are difficult to adapt flexibly to different sizes of cardboard, and the ventilation and drying effect is poor, resulting in quality problems such as cardboard deformation and wrinkles.

Method used

A drying rack was designed, which includes a movable base plate, an electric sliding adjustment section, and a drying rack extension ventilation section. The load-bearing area is adjusted by the electric sliding adjustment section, and the design of ventilation slots and fan blades enables flexible adaptation to different cardboard sizes and uniform drying.

Benefits of technology

It enables flexible adjustment of the bearing area according to the cardboard size, improves drying efficiency and uniformity, enhances adaptability to different cardboard widths, reduces heat accumulation, and lowers energy consumption.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223925278U_ABST
    Figure CN223925278U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of leatheroid processing, and discloses a drying rack for leatheroid processing, which comprises a movable bottom plate, an electric sliding adjusting part and a drying rack extension ventilation part, and universal wheels are symmetrically arranged on the outer wall of the bottom of the movable bottom plate. The supporting fixing plates and the fixing supporting frames are connected through the sliding rollers and the connecting rods, the distance can be flexibly adjusted according to the width of the leatheroid, the width of the bearing face of the drying frame can be conveniently changed for the leatheroid of different specifications, it is guaranteed that the drying process is not limited by the size of the leatheroid, the universality of the drying frame is enhanced through adjustability, and the drying frame is convenient to use. The trouble that different drying devices need to be replaced due to the size difference of the leatheroid is reduced, the production cost is reduced, the ventilation system promotes hot air to circularly flow in the drying frame, heat accumulation in the local part is reduced, the drying environment is optimized, hot air is efficiently recycled, a large amount of heat loss is avoided, the energy utilization rate is increased, and energy consumption is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

TECHNICAL FIELD

[0001] The utility model relates to paper skin processing technical field, concretely is a kind of drying rack for paper skin processing. BACKGROUND

[0002] In paper skin processing industry, drying link plays a key role to the quality and subsequent use performance of paper skin. The traditional drying rack for paper skin processing exposes many problems in practical application, seriously restricts the promotion of production efficiency and product quality.

[0003] From the structure design, most traditional drying rack is fixed structure, and size and shape are difficult to adjust. Paper skin is various in processing process, and the length and width of different batches of paper skin are significantly different. The drying rack of fixed structure cannot be flexibly adapted to paper skin of various sizes, so that part of paper skin cannot be placed on the drying rack, not only waste drying space, but also paper skin may be deformed, wrinkled and other problems in drying process due to improper placement, affect paper skin quality. INVENTION CONTENTS

[0004] The utility model aims at providing a kind of drying rack for paper skin processing, solve the technical problems that traditional drying rack is difficult to flexibly adapt to paper skin of different sizes, and the ventilation drying effect is not good, reach the purpose that can be flexibly adjusted bearing area according to paper skin size, ventilation to improve drying efficiency and uniformity, enhance the adaptability to different paper skin width.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of drying rack for paper skin processing, including mobile base plate, electric sliding adjustment part, drying rack extension ventilation part, the bottom outer wall of mobile base plate is symmetrically provided with universal wheel;Electric sliding adjustment part is set in the top of mobile base plate;Drying rack extension ventilation part is set in the top of electric sliding adjustment part.

[0006] Preferably, the electric sliding adjustment part specifically includes: sliding adjustment base, fixedly installed in the top outer wall of mobile base plate;Driving motor, is set in the outer wall of one side of sliding adjustment base;Rectangular sliding slot is opened in the top outer wall of sliding adjustment base.

[0007] Preferably, the two side inner walls of rectangular sliding slot are symmetrically fixedly installed with guide sliding rod, and the inner part of rectangular sliding slot is slidably installed with mobile support plate one and mobile support plate two, the outer wall of mobile support plate one and mobile support plate two is fixedly installed with threaded screw sleeve, and sliding hole is opened in mobile support plate one and mobile support plate two.

[0008] Preferably, the moving support plate one and the moving support plate two are slidingly installed on the outer wall of the guide sliding rod through sliding holes, the driving motor is fixedly installed on one side of the outer wall of the sliding adjusting base, the output end of the driving motor is fixedly connected with a forward threaded lead screw, the other end of the forward threaded lead screw is movably penetrated through the outer wall of the sliding adjusting base and extends into the rectangular sliding groove, and the other end of the forward threaded lead screw is fixedly connected with a connecting shaft rod.

[0009] The connecting shaft rod is provided, one end of the connecting shaft rod is connected with the forward threaded lead screw, the other end of the connecting shaft rod is connected with a reverse threaded lead screw, and the two are connected as a whole. When the driving motor operates to drive the forward threaded lead screw to rotate, the connecting shaft rod rotates synchronously, and then drives the reverse threaded lead screw to rotate. This design enables the forward threaded lead screw and the reverse threaded lead screw to rotate at the same speed and in opposite directions, so that the moving support plate one and the moving support plate two move towards or away from each other in the rectangular sliding groove.

[0010] Preferably, the other end of the connecting shaft rod is fixedly connected with the reverse threaded lead screw, the other end of the reverse threaded lead screw is rotatably connected with the inner wall of the rectangular sliding groove, the moving support plate one is threadedly connected with the forward threaded lead screw through a threaded lead screw sleeve, the moving support plate two is threadedly connected with the reverse threaded lead screw through a threaded lead screw sleeve, and the outer wall of one side of the moving support plate one and the moving support plate two is provided with a ventilation groove, and the inner wall of the ventilation groove is circumferentially provided with ventilation holes.

[0011] Preferably, the drying rack extending ventilation part specifically comprises: fan fixing frames fixedly installed on one side of the outer wall of the moving support plate one and the moving support plate two; a motor fixing frame fixedly installed on the outer wall of the fan fixing frame; a motor fixedly installed in the motor fixing frame; a fixed plate fixedly installed on the outer wall of the moving support plate two; and support fixed plates fixedly installed on the outer wall of the moving support plate one at equal intervals.

[0012] Preferably, the output end of the motor is fixedly connected with a rotating shaft rod, the other end of the rotating shaft rod is movably penetrated through the outer wall of the fan fixing frame and extends into the ventilation groove, the outer wall of the rotating shaft rod is circumferentially fixedly installed with a plurality of fan blades at equal intervals, the outer wall of the fixed plate is fixedly installed with a plurality of fixed support frames at equal intervals, and the fixed support frames are all provided with moving sliding grooves.

[0013] The fan blades, the ventilation groove and the ventilation holes are designed to cooperate with the airflow generated by the fan blades, so that hot air can be blown to the paper skin in all directions and at multiple angles, effectively avoiding drying dead angles and ensuring that all parts of the paper skin can be fully dried. At the same time, the airflow generated by the fan blades accelerates the circulation of air, making the heat distribution in the drying rack more uniform. This not only prevents the paper skin from being damaged due to local overheating, but also enables the internal moisture of the paper skin to evaporate quickly, greatly shortening the drying time and improving the drying efficiency.

[0014] Preferably, the support fixing plate is provided with a through hole, the through hole is internally provided with a connecting rod, the two ends of the connecting rod are fixedly installed with limiting plates, the outer wall of the connecting rod is equidistantly movably sleeved with sliding rollers, the sliding rollers are slidably installed in the inside of the moving sliding groove, the spacing between the support fixing plate and the fixed support frame is matched, and the connecting rod is arranged in the inside of the moving sliding groove.

[0015] The sliding rollers are arranged, the connecting rod where the sliding rollers are located can adjust the position as required in the extension of the drying rack, the limiting plates at the two ends of the connecting rod ensure that the sliding rollers stably operate in the moving sliding groove, so that the drying rack can flexibly adapt to the drying needs of paper skins of different sizes, when the size of the paper skin changes, the support fixing plate can be pulled out from between the fixed support frames through the connecting rod, so that the paper skin can be effectively supported and dried at all times, and the universality and practicality of the drying rack are enhanced.

[0016] The utility model provides a drying rack for paper skin processing, has the following beneficial effects:

[0017] (1), the utility model discloses a driving motor drives the positive thread screw rod and reverse thread screw rod rotation, makes mobile support plate one and mobile support plate two can be in rectangular sliding slot opposition or reverse sliding, this design lets drying rack can according to the actual length, width of paper skin flexible adjustment bearing area's size, the ventilation groove and air vent of mobile support plate one and mobile support plate two are seted up, when sliding adjustment changes bearing area, can guarantee that hot air evenly flows under paper skin, when paper skin places on the support plate after sliding adjustment, hot air can be through ventilation groove and air vent all -round effect on paper skin, avoid appearing local heating deficiency or overheating condition.

[0018] (2), the utility model discloses through the support fixing plate and fixed support frame are connected through sliding roller and connecting rod, can according to the width of paper skin flexible adjustment spacing, face different specifications paper skin, can conveniently change the width of drying rack bearing surface, ensure that drying process is not restricted by paper skin size, this adjustability enhances the universality of drying rack, reduces the trouble of replacing different drying equipment because of paper skin size difference, reduces production cost, and the ventilation system promotes the circulation of hot air in the drying rack, reduces the heat gathering in the local, optimizes the drying environment, the efficient circulation of hot air avoids a large amount of heat loss, improves energy utilization rate, reduces energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure front view perspective drawing of the utility model;

[0020] Figure 2 It is the partial view of the utility model electric sliding adjustment part;

[0021] Figure 3The utility model discloses a drying rack extension ventilation part partial view,

[0022] Figure 4 The utility model discloses a mobile sliding chute partial view.

[0023] In the drawing: 1 mobile bottom plate, 2 universal wheel, 3 electric sliding adjustment part, 311 sliding adjustment base, 312 rectangular sliding groove, 313 guide slide bar, 314 forward screw rod, 315 connecting axle, 316 reverse screw rod, 317 mobile support plate one, 318 mobile support plate two, 319 ventilation groove, 3111 ventilation hole, 3112 drive motor, 4 drying rack extension ventilation part, 411 fan fixing frame, 412 motor fixing frame, 413 motor, 414 rotating axle, 415 fan blade fixing plate, 416 fixed plate, 417 fixed support frame, 418 support fixed plate, 419 mobile sliding chute, 4111 connecting rod, 4112 limit plate, 4113 sliding roller. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the utility model.

[0025] The examples of the described embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as the limitation of the utility model. EMBODIMENT

[0026] Based on the problems that the traditional drying rack is difficult to flexibly adapt to paper skins of different sizes and the ventilation and drying effect is poor, the preferred embodiment of the drying rack for paper skin processing provided by the utility model has Figures 1-4 As shown in the figure: a drying rack for paper skin processing, including mobile bottom plate 1, electric sliding adjustment part 3, drying rack extension ventilation part 4, the bottom outer wall of mobile bottom plate 1 is provided with universal wheel 2; electric sliding adjustment part 3 is arranged at the top of mobile bottom plate 1; drying rack extension ventilation part 4 is arranged at the top of electric sliding adjustment part 3.

[0027] Electric sliding adjustment part 3 specifically includes: sliding adjustment base 311, fixedly installed on the top outer wall of mobile bottom plate 1; drive motor 3112, arranged on the side outer wall of sliding adjustment base 311; rectangular sliding groove 312, opened on the top outer wall of sliding adjustment base 311.

[0028] The two side inner walls of the rectangular sliding groove 312 are symmetrically fixedly installed with guide sliding rods 313, and the inner part of the rectangular sliding groove 312 is slidingly installed with a moving support plate one 317 and a moving support plate two 318, and the outer walls of the moving support plate one 317 and the moving support plate two 318 are fixedly installed with threaded screw rod sleeves, and the moving support plate one 317 and the moving support plate two 318 are both provided with sliding holes.

[0029] The moving support plate one 317 and the moving support plate two 318 are slidingly installed on the outer wall of the guide sliding rod 313 through the sliding holes, the driving motor 3112 is fixedly installed on the outer wall of the sliding adjustment base 311, the output end of the driving motor 3112 is fixedly connected with a forward threaded screw rod 314, the other end of the forward threaded screw rod 314 is movably penetrated through the outer wall of the sliding adjustment base 311 and extends into the interior of the rectangular sliding groove 312, and the other end of the forward threaded screw rod 314 is fixedly connected with a connecting shaft rod 315.

[0030] The other end of the connecting shaft rod 315 is fixedly connected with a reverse threaded screw rod 316, the other end of the reverse threaded screw rod 316 is rotationally connected with the inner wall of the rectangular sliding groove 312, the moving support plate one 317 is threadedly connected with the forward threaded screw rod 314 through the threaded screw rod sleeve, the moving support plate two 318 is threadedly connected with the reverse threaded screw rod 316 through the threaded screw rod sleeve, and the outer walls of the moving support plate one 317 and the moving support plate two 318 are both provided with ventilation grooves 319, and the inner wall circumferences of the ventilation grooves 319 are equally provided with ventilation holes 3111.

[0031] In the process of the embodiment, according to the size of the paper skin to be dried, the driving motor 3112 is started, the output end of the driving motor 3112 drives the forward threaded screw rod 314 to rotate, the forward threaded screw rod 314 drives the reverse threaded screw rod 316 to synchronously rotate through the connecting shaft rod 315, since the moving support plate one 317 is threadedly connected with the forward threaded screw rod 314 through the threaded screw rod sleeve, the moving support plate two 318 is threadedly connected with the reverse threaded screw rod 316 through the threaded screw rod sleeve, and both are slidingly arranged on the outer wall of the guide sliding rod 313 through the sliding holes, under the rotation of the threaded screw rods, the moving support plate one 317 and the moving support plate two 318 start to move backward in the rectangular sliding groove 312, when the moving support plate one 317 moves, the support fixed plate 418 equally fixed on the outer wall thereof is synchronously moved, when the moving support plate two 318 moves, the fixed support frame 417 fixed on the support fixed plate 416 is synchronously moved, in this process, the support fixed plate 418 moves stably in the inner wall of the moving sliding groove 419 of the fixed support frame 417 through the connecting rod 4111 and the sliding roller 4113 on the connecting rod 4111, so as to flexibly adjust the distance between the support fixed plate 418 and the fixed support frame 417 to adapt to the length of the paper skin, and this design can flexibly adjust the size of the bearing area according to the actual length and width of the paper skin. Embodiment

[0032] Please refer to Figures 1-4 And on the basis of embodiment one, further obtained: the drying rack extension ventilation part 4 specifically comprises: a fan fixing frame 411 fixedly installed on one side of the outer wall of the mobile support plate one 317 and the mobile support plate two 318 respectively; a motor fixing frame 412 fixedly installed on the outer wall of the fan fixing frame 411; a motor 413 fixedly installed in the interior of the motor fixing frame 412; a fixed plate 416 fixedly installed on the outer wall of the mobile support plate two 318; and a support fixed plate 418 equidistantly fixedly installed on the outer wall of the mobile support plate one 317.

[0033] The output end of the motor 413 is fixedly connected with a rotating shaft 414, the other end of the rotating shaft 414 movably penetrates through the outer wall of the fan fixing frame 411 and extends to the interior of the ventilation groove 319, the outer wall of the rotating shaft 414 is equidistantly fixedly installed with a fan blade 415, the outer wall of the fixed plate 416 is equidistantly fixedly installed with a fixed support frame 417, and the fixed support frame 417 is provided with a mobile sliding groove 419.

[0034] The support fixed plate 418 is provided with a through hole, the interior of the through hole is provided with a connecting rod 4111, the two ends of the connecting rod 4111 are fixedly installed with a limiting plate 4112, the outer wall of the connecting rod 4111 is movably sleeved with a sliding roller 4113, the sliding roller 4113 is slidably installed at the temple of the mobile sliding groove 419, the spacing between the support fixed plate 418 and the fixed support frame 417 is matched, and the connecting rod 4111 is arranged in the interior of the mobile sliding groove 419.

[0035] In the process of the embodiment, the motor 413 is started, the output end of the motor 413 drives the rotating shaft 414 to rotate, the rotating shaft 414 drives the circumferentially equidistantly installed fan blade 415 to rotate, the airflow generated by the fan blade 415 passes through the ventilation grooves 319 on the mobile support plate one 317 and the mobile support plate two 318 and the ventilation holes 3111 equidistantly arranged on the inner wall of the ventilation grooves 319, and is uniformly and efficiently blown to each part of the paper skin, so that the water evaporation on the surface of the paper skin is accelerated, the drying process is started, the ventilation system promotes the circulation of hot air in the drying rack, reduces the heat aggregation in the local part, optimizes the drying environment, the efficient circulation of the hot air avoids the loss of a large amount of heat, improves the energy utilization rate, and reduces the energy consumption.

[0036] Working principle: when in use;

[0037] Step one: move the mobile base plate 1 to the designated working position through the universal wheels 2 symmetrically arranged on the outer wall of the bottom, ensure stable placement, the universal wheels 2 can be flexibly turned, the position of the equipment is conveniently adjusted, and the whole drying rack is pushed into the drying workshop through the universal wheels 2;

[0038] Step two: according to the size of the paper to be dried, start the driving motor 3112, the driving motor 3112 output end drives the forward threaded lead screw 314 to rotate, the forward threaded lead screw 314 drives the reverse threaded lead screw 316 to rotate synchronously through the connecting shaft 315, because the moving support plate one 317 is connected with the forward threaded lead screw 314 through the threaded lead screw sleeve, the moving support plate two 318 is connected with the reverse threaded lead screw 316 through the threaded lead screw sleeve, and the two are slid in the outer wall of the guide sliding rod 313 through the sliding hole, under the action of the threaded lead screw, the moving support plate one 317 and the moving support plate two 318 start to move backward in the rectangular sliding groove 312, when the moving support plate one 317 moves, the support fixed plate 418 fixed equidistantly on the outer wall thereof moves synchronously; when the moving support plate two 318 moves, the fixed support frame 417 fixed on the support fixed plate 416 moves synchronously, in this process, the support fixed plate 418 moves stably in the inner wall of the moving sliding groove 419 of the fixed support frame 417 through the connecting rod 4111 and the sliding roller 4113 on the connecting rod 4111, so as to flexibly adjust the distance between the support fixed plate 418 and the fixed support frame 417 to adapt to the length of the paper;

[0039] Step five: place the paper between the sliding roller 4113 between the staggered support fixed plate 418 and the fixed support frame 417, if the paper is narrow, the distance between the support fixed plate 418 and the fixed support frame 417 can be further reduced by reversing the driving motor 3112 to ensure stable placement of the paper; if the paper is wide, reverse the operation to expand the distance, the limiting plate 4112 at both ends of the connecting rod 4111 always ensures the stable operation of the sliding roller 4113 in the moving sliding groove 419, so as to ensure that the paper is effectively supported and the versatility of the drying rack for different paper widths is enhanced;

[0040] Step six: start the motor 413, the motor 413 output end drives the rotating shaft 414 to rotate, the rotating shaft 414 drives the circumferentially equidistantly installed fan blade 415 to rotate, the airflow generated by the fan blade 415 passes through the ventilation groove 319 on the moving support plate one 317 and the moving support plate two 318 and the ventilation hole 3111 equidistantly opened on the inner wall of the ventilation groove 319, and blows uniformly and efficiently to each part of the paper, accelerates the evaporation of water on the surface of the paper, and starts the drying process;

[0041] Step seven: after the paper skin drying is completed, first close the motor 413, stop the ventilation drying, then take out the paper skin from the sliding roller 4113, if adjustment drying rack is used for next different size paper skin drying, can start the drive motor 3112 again, move the support plate one 317 and the support plate two 318 again to the back, drive the support fixed plate 418 and the fixed support frame 417 corresponding adjustment interval, in this process, the support fixed plate 418 still moves in the moving sliding groove 419 inner wall through the connecting rod 4111 and the sliding roller 4113, after adjustment, move the equipment to the appropriate position storage, complete the whole work flow.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the scope of protection of the present application.

Claims

1. A drying rack for cardboard processing, comprising a movable base plate (1), an electrically adjustable sliding adjustment section (3), and a drying rack extension ventilation section (4), characterized in that: The bottom outer wall of the movable base plate (1) is symmetrically provided with casters (2); the electric sliding adjustment part (3) is located on the top of the movable base plate (1); the drying rack extension ventilation part (4) is located on the top of the electric sliding adjustment part (3).

2. The drying rack for cardboard processing according to claim 1, characterized in that: The electric sliding adjustment part (3) specifically includes: The sliding adjustment base (311) is fixedly installed on the top outer wall of the movable base plate (1); The drive motor (3112) is located on one side of the outer wall of the sliding adjustment base (311); A rectangular sliding groove (312) is formed on the top outer wall of the sliding adjustment base (311).

3. A drying rack for cardboard processing according to claim 2, characterized in that: Guide slide rods (313) are symmetrically fixed between the inner walls of the two sides of the rectangular sliding groove (312). Movable support plate one (317) and movable support plate two (318) are slidably installed inside the rectangular sliding groove (312). Threaded screw sleeves are fixedly installed on the outer walls of movable support plate one (317) and movable support plate two (318). Sliding holes are opened on movable support plate one (317) and movable support plate two (318).

4. A drying rack for cardboard processing according to claim 3, characterized in that: The first movable support plate (317) and the second movable support plate (318) are slidably mounted on the outer wall of the guide slide rod (313) through sliding holes. The drive motor (3112) is fixedly mounted on one side of the outer wall of the sliding adjustment base (311). The output end of the drive motor (3112) is fixedly connected to a positive threaded screw (314). The other end of the positive threaded screw (314) movably penetrates the outer wall of the sliding adjustment base (311) and extends into the interior of the rectangular sliding groove (312). The other end of the positive threaded screw (314) is fixedly connected to a connecting shaft (315).

5. A drying rack for cardboard processing according to claim 4, characterized in that: The other end of the connecting shaft (315) is fixedly connected to a reverse threaded screw (316). The other end of the reverse threaded screw (316) is rotatably connected to the inner wall of the rectangular sliding groove (312). The first movable support plate (317) is threadedly connected to the first threaded screw (314) through a threaded screw sleeve. The second movable support plate (318) is threadedly connected to the reverse threaded screw (316) through a threaded screw sleeve. Ventilation grooves (319) are provided on one side of the outer wall of both the first movable support plate (317) and the second movable support plate (318). Ventilation holes (3111) are provided at equal intervals around the inner wall of the ventilation groove (319).

6. A drying rack for cardboard processing according to claim 1, characterized in that: The extended ventilation section (4) of the drying rack specifically includes: The fan mounting bracket (411) is fixedly installed on one side of the outer wall of the movable support plate one (317) and the movable support plate two (318); The motor mounting bracket (412) is fixedly installed on the outer wall of the fan mounting bracket (411); The motor (413) is fixedly installed inside the motor mounting bracket (412); The fixed plate (416) is fixedly installed on the outer wall of the movable support plate two (318); The support fixing plate (418) is fixedly installed at equal intervals on the outer wall of the movable support plate (317).

7. A drying rack for cardboard processing according to claim 6, characterized in that: The output end of the motor (413) is fixedly connected to a rotating shaft (414). The other end of the rotating shaft (414) movably passes through the outer wall of the fan mounting bracket (411) and extends into the interior of the ventilation slot (319). Fan blades (415) are fixedly installed at equal intervals around the outer wall of the rotating shaft (414). Fixed support frames (417) are fixedly installed at equal intervals on the outer wall of the fixed plate (416). Each fixed support frame (417) is provided with a movable sliding groove (419).

8. A drying rack for cardboard processing according to claim 7, characterized in that: Each of the support fixing plates (418) has through holes, and a connecting rod (4111) is provided inside the through holes. Limiting plates (4112) are fixedly installed at both ends of the connecting rod (4111). Sliding rollers (4113) are equidistantly mounted on the outer wall of the connecting rod (4111). The sliding rollers (4113) are slidably installed on the temporal part of the movable slide groove (419). The distance between the support fixing plate (418) and the fixed support frame (417) is adapted to each other. The connecting rod (4111) is located inside the movable slide groove (419).