A surface dew removal and dehumidification structure and method for a rotary plastic molding die

Abstract

The present invention relates to the technical field of plastic molding machinery, and specifically relates to a dew removal and dehumidification structure and method for the surface of a rotary plastic molding die, which includes a driver and a dehumidification rotary wheel driven by the driver. Air ducts are arranged on both sides of the dehumidification rotary wheel, and a rotatable regeneration connection component is connected through the middle of the dehumidification rotary wheel; the regeneration connection component divides the dehumidification rotary wheel into a regeneration area and a functional area, and the ratio of the area of the regeneration area to the cross-sectional area of the dehumidification rotary wheel is P, where 20% ≤ P < 25%. When the driver drives the dehumidification rotary wheel to rotate, the regeneration connection component is simultaneously driven by a speed reduction component to rotate in the same direction as the dehumidification rotary wheel with a differential speed, and the rotation speed of the dehumidification rotary wheel is greater than that of the regeneration connection component. The present invention adjusts the exposure time of the dehumidification rotary wheel in the area occupied by the regeneration connection component through the speed difference to ensure the rapid regeneration of the adsorption medium.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic molding machinery, and more specifically, to a dew removal and dehumidification structure and method for the surface of a rotary plastic molding die. Background Art

[0002] The dew removal and dehumidification structure for the surface of a wheel-type plastic molding die precisely controls the humidity of the die environment through rotary dehumidification technology. Its core functions include suppressing condensation, ensuring product quality, extending the life of the die, and improving production efficiency. Its technical principle is based on the adsorption-regeneration cycle system of a honeycomb rotary wheel. Moisture is adsorbed in the treatment area to generate dry air with a low dew point (up to -70°C), and moisture is desorbed at high temperature and discharged in the regeneration area. At the same time, waste heat recovery is combined to reduce energy consumption. This structure is particularly suitable for high-precision injection molding (such as PET preforms, optical lenses) and processes that require rapid cooling. Compared with traditional refrigeration or compression dehumidification, it has both ultra-low dew point control and large air volume adaptability, effectively solving the problems of oxidation and water stain defects caused by surface condensation of the die, and allowing the die to operate efficiently in a low-temperature environment.

[0003] Chinese Patent with Publication No. CN204193755U discloses a rotary die dehumidifier, which includes an adsorption rotary wheel regeneration system and a drying system; the regeneration system includes a regeneration filter, a regeneration fan, and a heater. The atmosphere sequentially passes through the regeneration filter, the regeneration fan, and the heater and then enters the regeneration area of the adsorption rotary wheel. The drying system includes a return air filter, a return air cooler, a drying fan, an outlet air cooler, and a water storage tank. The die return air or the atmosphere passes through return air filtration, cooling, and drying and then enters the treatment area of the adsorption rotary wheel, and then the dried air is output from the treatment area of the adsorption rotary wheel and passes through the outlet air cooler; the water storage tank receives the dew condensed on the return air cooler, and a regulating valve is provided at the cooling water inlet end of the outlet air cooler. This utility model can reduce the temperature of the dried air, prevent the surface of the die from condensing, improve the quality of plastic products, and the water storage tank has an automatic drainage function to timely drain the condensed water out of the machine, achieving stable dehumidification performance.

[0004] The existing dew removal and dehumidification structure for the surface of a rotary plastic molding die has obvious shortcomings. The regeneration connection component usually accounts for 25% of the total area of the dehumidification rotary wheel, that is, a 90-degree sector area, which is not convenient to adjust the proportion of the regeneration connection component according to the actual humidity requirement, resulting in redundant area in the regeneration area in a low-humidity environment and insufficient area in a high-humidity environment. Moreover, since the regeneration connection component is fixed inside the dehumidification structure, if the proportion is forcibly reduced, the hot air coverage range will be directly reduced, and it is necessary to increase the regeneration temperature or the air volume to compensate for the desorption efficiency, resulting in increased energy consumption, and it is not convenient to clean the dehumidification rotary wheel, and dust is likely to block the micropores of the honeycomb rotary wheel, affecting the performance of the moisture absorbent.

[0005] Therefore, a dew removal and dehumidification structure and method for the surface of a rotary plastic molding die are provided, which can make up for the reduction in the hot air coverage area caused by reducing the proportion of the regeneration component by using the rotational speed difference between the regeneration connection component and the dehumidification rotor, and is convenient for cleaning the dehumidification rotor. Summary of the Invention

[0006] Aiming at solving the problems that reducing the proportion will directly reduce the hot air coverage area, and it is necessary to compensate the desorption efficiency by increasing the regeneration temperature or the air volume, resulting in increased energy consumption, and it is not convenient to clean the dehumidification rotor, the present application provides a dew removal and dehumidification structure and method for the surface of a rotary plastic molding die.

[0007] The technical solution of the present invention is: a dew removal and dehumidification structure for the surface of a rotary plastic molding die, including a driver and a dehumidification rotor driven by the driver. Guide pipes are arranged on both sides of the dehumidification rotor, and a rotatable regeneration connection component is connected through the middle of the dehumidification rotor; the regeneration connection component divides the dehumidification rotor into a regeneration area and a functional area. The ratio of the area of the regeneration area to the cross-sectional area of the dehumidification rotor is P, where 20% ≤ P < 25%. When the driver drives the dehumidification rotor to rotate, the regeneration connection component is simultaneously driven by a speed reduction component to rotate in the same direction as the dehumidification rotor with a differential speed, and the rotational speed of the dehumidification rotor is greater than that of the regeneration connection component.

[0008] Further, the regeneration connection component includes two hot air boxes connected by a rotating shaft and two rotating rings fixedly connected to the two hot air boxes. The two hot air boxes are symmetrically arranged on both sides of the dehumidification rotor and communicate with the regeneration area. The rotating rings and the guide pipes on both sides of the dehumidification rotor respectively form annular channels, so that the heated air flowing through the regeneration area can pass through. The driver drives the two hot air boxes to rotate synchronously on both sides of the dehumidification rotor through a speed reduction component. The hot air box is arranged on both sides of the dehumidification rotor, and the ratio of the area in contact with the dehumidification rotor to the cross-sectional area of the dehumidification rotor is P. On the premise of unchanged input air volume, by reducing the occupied area of the hot air box, the air volume flowing through per unit time is increased to improve the drying speed of the regeneration area of the dehumidification rotor, making the air flow path in the regeneration area more concentrated and the wind speed increased, thereby improving the desorption efficiency. However, it should be noted that although the high wind speed can enhance the heat exchange intensity between the hot air in the regeneration area and the rotor, shorten the moisture desorption time, and the theoretical desorption efficiency is increased by about 10 - 15%, after the area of the regeneration area is reduced, the regeneration heating energy consumption can be reduced, but too high a wind speed may reduce the contact time between the air and the rotor material, which will instead affect the desorption effect. Therefore, it is necessary to verify and find a suitable air volume range.

[0009] Further, the air duct includes an upper air cylinder and a lower air cylinder. The top end of the rotating shaft is rotatably connected to the upper air cylinder through a connecting component, and the bottom end of the rotating shaft is rotatably connected to the lower air cylinder through a connecting component. Two rotating rings are respectively rotatably connected to the inner walls of the upper air cylinder and the lower air cylinder on the side away from the dehumidifying rotor through a first sealing bearing. A filter plate is fixed inside each hot air box. A top support plate is fixed to the bottom of the upper air cylinder, and one end of one of the rotating rings close to the dehumidifying rotor is rotatably connected to the inside of the top support plate through a second sealing bearing. A bottom plate is fixed to the top of the lower air cylinder, and one end of the other rotating ring close to the dehumidifying rotor is rotatably connected to the inside of the bottom plate through a second sealing bearing.

[0010] Further, a bottom support plate is fixed to the top of the bottom plate. A base plate is fixed to the outside of the bottom support plate. A sealed box is fixed to the bottom of the base plate. Three vertical rods are fixed to the top of the base plate. The dehumidifying rotor is rotationally clamped to the top of the bottom support plate. The top of the rotating ring close to the bottom end of the rotating shaft is in contact with the bottom of the dehumidifying rotor.

[0011] Further, the top support plate is slidably clamped to the outside of the three vertical rods. An elastic member is fixed to one end of each vertical rod away from the base plate, and the other end of each elastic member is fixed to the top of the top support plate. The elastic member presses the rotating ring rotatably connected to the inside of the top support plate against the top of the dehumidifying rotor.

[0012] Further, the driver is fixed to the outside of one of the vertical rods, and a transmission member is arranged between the driver and the speed reduction component for transmission connection.

[0013] Further, the speed reduction component is assembled to transmit the power of the driver to one of the rotating rings after deceleration, and the rotation speed of the dehumidifying rotor is greater than the rotation speed of the rotating ring, and the two hot air boxes and the dehumidifying rotor rotate in the same direction with different speeds to make up for the shortening of the drying time of the dehumidifying rotor per unit time caused by the reduction of the occupied area of the hot air box; the speed reduction component is a speed reducer fixed to the top of the lower guard plate. The input end of the speed reducer is in transmission connection with the dehumidifying rotor through a same-speed transmission part, and the transmission member is located at the bottom of the same-speed transmission part. The output end of the speed reducer is in transmission connection with the rotating ring at the bottom of the dehumidifying rotor through a speed-reducing transmission part.

[0014] Further, a fourth bevel gear is fixed to the inside of the lower air cylinder. A cleaning member is arranged inside the fourth bevel gear. A cleaning brush is fixed to the outside of the cleaning member. The cleaning member is assembled to drive the cleaning brush to clean the bottom of the dehumidifying rotor by using the force of the rotation of the rotating ring.

[0015] Further, the cleaning member includes a bracket fixed to the outside of the hot air box inside the lower air cylinder. A rotating rod is rotatably connected through the top of the bracket. On one side of the rotating rod away from the dehumidification runner, a first bevel gear is fixed, and the first bevel gear meshes with a fourth bevel gear. A second bevel gear is fixed to the other end of the rotating shaft. Inside the rotating ring inside the lower air cylinder, a round rod is rotatably connected. A third bevel gear is fixed to one end of the round rod close to the rotating ring, and the third bevel gear meshes with the second bevel gear. A cleaning brush is fixed to the outside of the round rod. A collection shell is fixed to the top of the bracket. An inclined plate is fixed to one side of the collection shell, and a cross plate is fixed to the inside of the collection shell.

[0016] Further, an operation method of the dew removal and dehumidification structure on the surface of the rotary plastic molding die:

[0017] S1. According to the actual production requirements, reduce the occupied area ratio of the regeneration connection component on the surface of the dehumidification runner, and set the speed ratio or differential ratio;

[0018] S2. According to the set speed ratio or differential ratio, by adjusting the speed reduction component, when the motor drives the regeneration connection component and the dehumidification runner to rotate, a speed difference is generated;

[0019] S3. According to the changes in actual production activities, adjust the speed ratio or differential ratio through the speed reducer;

[0020] S4. When the regeneration connection component rotates, the cleaning brush cleans the bottom of the dehumidification runner.

[0021] The beneficial effects of the present invention are as follows:

[0022] (1) For the dew removal and dehumidification structure and method on the surface of the rotary plastic molding die described in the present invention, on the premise that the air volume of the drying fan remains unchanged, compared with the prior art where the regeneration connection component occupies 25% of the total area of the dehumidification runner, the occupied area of the regeneration connection component is reduced, so that the flow rate of the drying gas passing through the dehumidification runner increases, accelerating the desorption process of the adsorbent. To make up for the shortening of the drying time, the speed reduction component can make the rotation speed of the regeneration connection component slower than that of the dehumidification runner, prolonging the residence time of the regeneration hot air on the surface of the runner. By adjusting the exposure time of the dehumidification runner in the occupied area of the regeneration connection component through the speed difference, the action time of the hot air can be prolonged under the same occupied area of the regeneration connection component, so as to achieve sufficient desorption within a smaller occupied area of the regeneration connection component, make up for the defect of the reduction of the hot air coverage area, improve the drying efficiency per unit time, and ensure the rapid regeneration of the adsorption medium.

[0023] (2) In the dew removal and dehumidification structure and method for the surface of a rotary plastic molding die according to the present invention, by providing a cleaning member, a cleaning brush, and a collection shell, and using a combination of a direct drive motor and a speed reducer, the cleaning brush and the rotary wheel rotate in the same direction with a differential speed, reducing energy consumption while ensuring the cleaning force. The rotational force of the regeneration connection component can be utilized to clean the impurities at the bottom of the dehumidification rotary wheel, effectively removing dust and fibers (such as the attachments on the surface of silica gel or molecular sieve adsorbents) in the honeycomb channels of the rotary wheel, avoiding the decrease in dehumidification efficiency caused by blockage and equipment overload.

[0024] (3) In the dew removal and dehumidification structure and method for the surface of a rotary plastic molding die according to the present invention, on the premise that the input air volume remains unchanged and 20% ≤ P < 25%, by reducing the occupied area of the hot air box to increase the air volume flowing through per unit time, the speed of the regeneration area of the drying and dehumidifying rotary wheel is increased, making the air flow path in the regeneration area more concentrated and the wind speed increased, thereby improving the desorption efficiency. The high wind speed can enhance the heat exchange intensity between the hot air in the regeneration area and the rotary wheel, shortening the moisture desorption time, and the theoretical desorption efficiency is increased by about 10 - 15%. Moreover, after the area of the regeneration area is reduced, the regeneration heating energy consumption can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] Figure 1 Schematic diagram of the overall structure provided by the present invention Figure 1 ;

[0027] Figure 2 Schematic cross-sectional view of the overall structure provided by the present invention;

[0028] Figure 3 For Figure 2 Enlarged view of part A;

[0029] Figure 4 For Figure 2 Enlarged view of part B;

[0030] Figure 5 Schematic diagram of the upper air cylinder structure provided by the present invention;

[0031] Figure 6 Schematic diagram of the dehumidification rotary wheel structure provided by the present invention;

[0032] Figure 7 Schematic diagram of the regeneration connection component structure provided by the present invention;

[0033] Figure 8 Schematic diagram of the hot air box structure provided by the present invention;

[0034] Figure 9 Schematic diagram of the rotating ring structure provided by the present invention Figure 1 ;

[0035] Figure 10 Schematic diagram of the swivel structure provided by the present invention Figure 2 ;

[0036] Figure 11 Schematic diagram of the cleaning part structure provided by the present invention;

[0037] Figure 12 is Figure 11 The enlarged view of part C of

[0038] Figure 13 is Figure 11 The enlarged view of part D of

[0039] Figure 14 Schematic diagram of the dehumidifier provided by the present invention Figure 1 ;

[0040] Figure 15 Schematic diagram of the dehumidifier provided by the present invention Figure 2 。

[0041] In the figure: 1, substrate; 2, sealing box; 3, upper support plate; 4, lower support plate; 5, upper air cylinder; 6, rotating shaft; 7, lower air cylinder; 8, swivel; 9, hot air box; 91, filter plate; 10, dehumidification wheel; 101, first straight gear; 11, driver; 12, reducer; 121, third straight gear; 122, fourth straight gear; 13, bottom plate; 131, second straight gear; 14, cleaning part; 141, bracket; 142, rotating rod; 143, second bevel gear; 145, round rod; 146, third bevel gear; 147, first bevel gear; 15, fourth bevel gear; 16, cleaning brush; 17, collection shell; 171, inclined plate; 172, horizontal plate; 18, dehumidifier; 181, air intake part; 182, air extraction part; 183, air outlet part; 184, exhaust part. Detailed implementation manners

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the present invention in combination with the drawings and the descriptions of the embodiments or the prior art. Obviously, the following descriptions of the structures of the drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but do not constitute a limitation to the present invention.

[0043] Such as Figures 14 - 15As shown, in the prior art, the rotary plastic molding mold surface dehumidification structure is arranged in the middle of the dehumidifier 18, and the exhaust part 182 is fixedly connected to the bottom of the mechanism, which includes a regeneration filter, a regeneration fan and a heater. The dry gas passes through the regeneration filter, the drying fan and the heater in sequence and then enters the inner side of the hot air box 9, and is discharged from the exhaust part 184 after passing through the dehumidification wheel 10;

[0044] The air intake part 181 is fixedly connected to the bottom of this mechanism, and the air intake part 181 is located on one side of the exhaust part 182, which includes a return air filter, a return air cooler, a drying fan, an outlet air cooler and a water storage tank. The mold return air or the gas that needs to be dehumidified passes through the return air filter, the return air cooler, and the drying fan in turn, and then enters the dehumidification wheel 10 through the lower air cylinder 7. There is an adsorbent inside the dehumidification wheel 10, and then the air is output from the processing area of the dehumidification wheel 10 through the upper air cylinder 5, the air outlet part 183, and the outlet air cooler to be dried.

[0045] Example: Figures 1 - 13 As shown, a rotary plastic molding mold surface dehumidification and dehumidification structure includes a dehumidification wheel 10 and a driver 11, the driver 11 is connected to the dehumidification wheel 10 and the reduction assembly through a transmission member, the reduction assembly is reduced and connected with a regeneration connection assembly, the dehumidification wheel 10 is rotationally connected to the regeneration connection assembly, and the inner side of the dehumidification wheel 10 is rotatably connected with a rotating shaft 6; the rotatable regeneration connection assembly divides the dehumidification wheel 10 into a regeneration area and a functional area, the ratio of the regeneration area area to the cross-sectional area of the dehumidification wheel 10 is P, and 20%≤P<25%, the dehumidification wheel 10 and the regeneration connection assembly are driven in the same direction and at a differential speed by the driver 11, and the rotation speed of the dehumidification wheel 10 is greater than the rotation speed of the regeneration connection assembly, and the regeneration connection assembly includes two hot air boxes 9 connected by the rotating shaft 6 and two hot air boxes 9 connected by the rotating shaft 6. The two hot air boxes 9 are fixedly connected to the two rotating rings 8, and the two hot air boxes 9 rotate synchronously at the top and bottom of the dehumidification wheel 10 by cooperating with the driver 11 and the reduction assembly; the hot air boxes 9 are arranged on both sides of the dehumidification wheel 10, and the ratio of the area in contact with the dehumidification wheel 10 to the cross-sectional area of the dehumidification wheel 10 is equal to P; under the premise of unchanged air volume, the drying speed is increased by reducing the area occupied by the hot air boxes 9, thereby accelerating the drying of the dehumidification wheel 10; the reduction assembly is equipped to transmit the power of the driver 11 to the two rotating rings 8 after deceleration, and the rotation speed of the dehumidification wheel 10 is greater than the rotation speed of the rotating ring 8, and the two hot air boxes 9 and the dehumidification wheel 10 are made to rotate in the same direction with differential speed, so as to make up for the shortened drying time of the dehumidification wheel 10 per unit time due to the reduction in the area occupied by the hot air boxes 9.

[0046] Specifically, the driver 11 in the present application may be selected but not limited to a stepper motor or a servo motor or other optional solutions.

[0047] In this embodiment, the size of the hot air box 9 can be selected according to actual production requirements, that is, the value of the proportion P (20% ≤ P < 25%) it occupies on the surface of the dehumidification rotor 10 is optional. In this embodiment, 20% is selected as an example. The side of the hot air box 9 in contact with the dehumidification rotor 10 adopts a fluorine elastomer material planar seal or a positive pressure air flow isolation to prevent the heated air from leaking to the outside of the hot air box 9. On the premise that the air volume of the drying fan remains unchanged, compared with the 25% of the total area of the dehumidification rotor 10 occupied by the regeneration connection component in the prior art, the occupied area of the regeneration connection component is reduced, which increases the flow rate of the drying gas through the dehumidification rotor 10. While increasing the drying speed of the adsorption medium inside the dehumidification rotor 10, it also reduces the coverage area of the drying gas, which will directly lead to the reduction of the effective drying area per unit time. To make up for the shortened drying time, the speed reduction component can make the rotation speed of the regeneration connection component slower than that of the dehumidification rotor 10, extending the residence time of the regenerated hot air on the surface of the rotor. The exposure time of the dehumidification rotor 10 in the occupied area of the regeneration connection component is adjusted through the speed difference, so as to extend the action time of the hot air under the same occupied area of the regeneration connection component, and sufficient desorption can be achieved within a smaller occupied area of the regeneration connection component; on the premise of constant input air volume and 20% ≤ P < 25%, by reducing the occupied area of the hot air box 9, the air volume flowing through per unit time is increased to improve the drying speed of the regeneration area of the dehumidification rotor 10, making the air flow path in the regeneration area more concentrated and the wind speed increased, thus improving the desorption efficiency. However, it should be noted that although the high wind speed can enhance the heat exchange intensity between the hot air in the regeneration area and the rotor, shorten the moisture desorption time, and the theoretical desorption efficiency is increased by about 10 - 15%, and the regeneration heating energy consumption can be reduced after the regeneration area is reduced, but too high wind speed may reduce the contact time between the air and the rotor material, which will instead affect the desorption effect. Therefore, for the effect changes outside the range of 20% ≤ P < 25%, additional verification is required to find a suitable air volume range.

[0048] Specifically, the top end of the rotating shaft 6 is rotatably connected to the upper air cylinder 5 through a connecting component, and the bottom end of the rotating shaft 6 is rotatably connected to the lower air cylinder 7 through a connecting component. The two rotating rings 8 are rotatably connected to the inner wall of the upper air cylinder 5 and the lower air cylinder 7 on the side away from the dehumidification wheel 10 respectively through a sealed bearing 1. A filter plate 91 is fixed to the inner side of each hot air box 9, and an upper support plate 3 is fixed to the bottom of the upper air cylinder 5, and one end of one of the rotating rings 8 close to the dehumidification wheel 10 is rotatably connected to the inner side of the upper support plate 3 through one of the sealed bearings 2. A bottom plate 13 is fixed to the top of the lower air cylinder 7, and the other end of the rotating ring 8 close to the dehumidification wheel 10 is rotatably connected to the inner side of the upper support plate 3 through another sealed bearing 2. The dehumidifier wheel 10 is rotatably connected to the inner side of the bottom plate 13, a lower support plate 4 is fixed to the top of the bottom plate 13, a base plate 1 is fixed to the outer side of the lower support plate 4, a sealing box 2 is fixed to the bottom of the base plate 1, three vertical rods are fixed to the top of the base plate 1, and a driver 11 is fixed to the outer side of one of the vertical rods. The dehumidifier wheel 10 is rotatably connected to the top of the lower support plate 4, and the top of the rotating ring 8 near the bottom end of the rotating shaft 6 fits with the bottom of the dehumidifier wheel 10. The upper support plate 3 is slidably connected to the outer side of the three vertical rods, and an elastic member is fixed to the end of each vertical rod away from the base plate 1, and the other end of each elastic member is fixed to the top of the upper support plate 3. The elastic member squeezes the rotating ring 8 rotatably connected to the inner side of the upper support plate 3 onto the top of the dehumidifier wheel 10.

[0049] In this embodiment, after the gas to be dehumidified enters the sealing box 2, it enters the dehumidification wheel 10 through the rotating ring 8 and the lower air cylinder 7 at the bottom of the dehumidification wheel 10 under the action of pressure, and is finally discharged from the rotating ring 8 and the upper air cylinder 5 at the top of the dehumidification wheel 10. The moisture in the gas will be adsorbed by the adsorption medium inside the dehumidification wheel 10 when passing through the dehumidification wheel 10, so that the moisture of the air passing through the dehumidification wheel 10 is removed; the dry gas enters the closed space formed by the rotating ring 8 and the upper air cylinder 5 at the top of the dehumidification wheel 10 under the action of pressure, and then enters the inner side of the hot air box 9 at the top of the dehumidification wheel 10. When the dry gas passes through the filter plate 91, the filter plate 91 removes impurities in the dry gas. Then the dry gas passes through the dehumidification wheel 10, and the moisture adsorbed on the dehumidification wheel 10 encounters the dry gas, is separated from the adsorption medium, and is discharged out of the machine together with the dry air, thereby restoring the drying processing function of the dehumidification wheel 10.

[0050] Specifically, a transmission member is provided between the driver 11 and the reduction assembly for transmission connection. The reduction assembly can be configured as a reducer 12 fixed to the top of the lower guard plate. Common choices for the reducer 12 include worm gear reducers, gear reducers, harmonic reducers, RV reducers or bevel gear reducers and other replaceable models. The input end of the reducer 12 is transmission-connected to the dehumidification wheel 10 through a same-speed transmission part, and the transmission member is located at the bottom of the same-speed transmission part. The output end of the reducer 12 is transmission-connected to the rotating ring 8 located at the bottom of the dehumidification wheel 10 through a speed reduction transmission part.

[0051] In this embodiment, the staff starts the driver 11. The output end of the driver 11 drives the reducer 12 to rotate through a transmission member. The transmission member can be a combination of a sprocket and a chain, or a combination of a pulley and a belt for transmission, or other alternative transmission methods. The same-speed transmission part and the speed-reducing transmission part are both used for transmission by a spur gear set or a bevel gear set. In the attached drawings of this application, the same-speed transmission part and the speed-reducing transmission part show spur gear set transmission. The gear set of the same-speed transmission part includes spur gear three 121 and spur gear one 101, and spur gear one 101 meshes with spur gear two 131. The gear set of the speed-reducing transmission part includes spur gear four 122 and spur gear two 131, and spur gear four 122 meshes with spur gear two 131. The input end of the reducer 12 drives the dehumidification wheel 10 to rotate at the same speed as the output end of the driver 11 with the axis of the rotating shaft 6 as the center through the same-speed transmission part. The output end of the reducer 12 drives the rotating ring 8 to rotate through the speed-reducing transmission part. The rotating ring 8 rotates in the same direction as the dehumidification wheel 10 at a speed lower than that of the dehumidification wheel 10 by a certain proportion, so that the differential rotation of the hot air box 9 and the dehumidification wheel 10 can cover more areas, thereby maintaining the drying efficiency.

[0052] Specifically, a bevel gear four 15 is fixed inside the lower air cylinder 7. A cleaning member 14 is arranged inside the bevel gear four 15. A cleaning brush 16 is fixed on the outer side of the cleaning member 14. The cleaning member 14 is assembled to drive the cleaning brush 16 to clean the bottom of the dehumidification wheel 10 by using the force of the rotation of the rotating ring 8. The cleaning member 14 includes a bracket 141. The bracket 141 is fixed on the outer side of the hot air box 9 inside the lower air cylinder 7. The top of the bracket 141 is rotatably connected through the rotating shaft 142. A bevel gear one 147 is fixed on the side of the rotating shaft 142 away from the dehumidification wheel 10, and the bevel gear one 147 meshes with the bevel gear four 15. The other end of the rotating shaft 6 is fixed with a bevel gear two 143. A round rod 145 is rotatably connected inside the rotating ring 8 located inside the lower air cylinder 7. A bevel gear three 146 is fixed at the end of the round rod 145 close to the rotating ring 8. The bevel gear three 146 meshes with the bevel gear two 143. The cleaning brush 16 is fixed on the outer side of the round rod 145. A collection shell 17 is fixed on the top of the bracket 141. An inclined plate 171 is fixed on one side of the collection shell 17. A cross plate 172 is fixed inside the collection shell 17.

[0053] In this embodiment, when the rotating ring 8 inside the lower air cylinder 7 rotates, the rotating ring 8 drives the bracket 141 to rotate around the rotating shaft 6 through the hot air box 9. The bracket 141 drives the first bevel gear 147 to rotate around the rotating shaft 6 through the rotating shaft 6. The first bevel gear 147 drives the rotating rod 142 to rotate through the meshing action with the fourth bevel gear 15. The rotating rod 142 drives the round rod 145 to rotate through the second bevel gear 143 and the third bevel gear 146. The round rod 145 drives the cleaning brush 16 to rotate, and the cleaning brush 16 brushes the sundries at the bottom of the dehumidifying runner 10, sweeping the sundries at the bottom of the dehumidifying runner 10 into the collection shell 17. The inclined plate 171 prevents the gas to be dehumidified from blowing into the inner side of the mobile phone, avoiding the impurities from being blown up, and the horizontal plate 172 prevents the sundries from flying out of the inner side of the collection shell 17.

[0054] Specifically, the operation method of the surface dew removal and dehumidification structure of the rotary plastic molding die:

[0055] S1. According to the actual production requirements, reduce the occupied area of the regeneration connection component on the surface of the dehumidifying runner 10, and set the speed ratio or differential ratio;

[0056] The following provides a calculation method that may be applicable to the above speed adjustment.

[0057] For example: when the occupied area of the hot air box 9 is reduced from 25% to 20%, the theoretical formula: the original hot air box 9 does not rotate (the rotation speed is 0), the rotation speed of the dehumidifying runner 10 is n, then the drying area per unit time is S original = 25% × n × t;

[0058] After the area is reduced to 20%, it is necessary to make the covered area per unit time equivalent through differential rotation, that is: 20% × (n + Δn) × t = 25% × n × t, and the solved increased rotation speed is: Δn = 0.25n (that is, increased by 25%);

[0059] Therefore, the hot air box 9 needs to rotate in the same direction as the dehumidifying runner 10 with a speed difference of 25%;

[0060] If the original rotation speed is 10 r / h, the rotation speed of the hot air box 9 after adjustment needs to reach 2.5 r / h (differential ratio 1:4).

[0061] S2. According to the set speed ratio or differential ratio, by adjusting the deceleration component, when the driver 11 drives the regeneration connection component and the dehumidifying runner 10 to rotate, a speed difference is generated;

[0062] S3. According to the changes in actual production activities, adjust the speed ratio or differential ratio through the speed reducer 12;

[0063] S4. When the regeneration connection component rotates, the cleaning brush 16 cleans the bottom of the dehumidifying runner 10.

[0064] Working principle: The gas to be dehumidified enters the sealing box 2. When the moisture in the gas passes through the dehumidification rotating wheel 10, the moisture in the gas will be adsorbed by the adsorption medium inside the dehumidification rotating wheel 10. The dried gas enters the inner side of the hot gas box 9 at the top of the dehumidification rotating wheel 10. The moisture inside the dehumidification rotating wheel 10 is separated from the adsorption medium and discharged outside the machine together with the dried air.

[0065] In this process, on the premise that the air volume of the drying fan remains unchanged, the occupied area of the regeneration connection component decreases, directly resulting in the reduction of the effective drying area per unit time. To make up for the shortened drying time, the speed reduction component can make the rotation speed of the regeneration connection component slower than that of the dehumidification rotating wheel 10, so as to achieve sufficient desorption within the smaller occupied area of the regeneration connection component.

[0066] The staff starts the driver 11. The output end of the driver 11 drives the reduction gear 12 to rotate through the transmission part. The input end of the reduction gear 12 drives the dehumidification rotating wheel 10 to rotate at the same speed as the output end of the driver 11 around the rotating shaft 6 through the same-speed transmission part. The output end of the reduction gear 12 drives the rotating ring 8 to rotate through the speed reduction transmission part. The rotating ring 8 rotates in the same direction as the dehumidification rotating wheel 10 at a speed lower than that of the dehumidification rotating wheel 10 by a certain proportion, so that the differential rotation of the hot gas box 9 and the dehumidification rotating wheel 10 can cover more areas;

[0067] When the rotating ring 8 inside the lower air cylinder 7 rotates, the cleaning part 14 drives the cleaning brush 16 to rotate. The cleaning brush 16 brushes the sundries at the bottom of the dehumidification rotating wheel 10 and sweeps the sundries at the bottom of the dehumidification rotating wheel 10 into the collection shell 17.

[0068] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A dew removal and dehumidification structure for the surface of a rotary plastic molding die, comprising a driver (11) and a dehumidification rotary wheel (10) driven by the driver (11), and air ducts are arranged on both sides of the dehumidification rotary wheel (10), and it is characterized in that: A rotatable regeneration connection assembly is connected through the middle of the dehumidification wheel (10); the regeneration connection assembly divides the dehumidification wheel (10) into a regeneration area and a functional area, the ratio of the area of the regeneration area to the cross-sectional area of the dehumidification wheel (10) is P, 20%≤P<25%, when the driver (11) drives the dehumidification wheel (10) to rotate, the regeneration connection assembly and the dehumidification wheel (10) are driven to rotate in the same direction at a differential speed through the reduction assembly, and the rotation speed of the dehumidification wheel (10) is greater than the rotation speed of the regeneration connection assembly; The regeneration connection assembly comprises two hot air boxes (9) connected by a rotating shaft (6) and two rotating rings (8) fixedly connected to the two hot air boxes (9); A reduction assembly is configured to transmit the power of a driver (11) to one of the rotating rings (8) after deceleration, and the rotation speed of the dehumidification wheel (10) is greater than the rotation speed of the rotating ring (8), and the two hot air boxes (9) and the dehumidification wheel (10) are caused to rotate in the same direction at a differential speed, thereby compensating for the shortening of the drying time of the dehumidification wheel (10) per unit time due to the reduction in the area occupied by the hot air box (9); the reduction assembly is a reducer (12) fixed to the top of the lower guard plate, the input end of the reducer (12) is transmission-connected to the dehumidification wheel (10) by arranging a same-speed transmission part, and the transmission member is located at the bottom of the same-speed transmission part, and the output end of the reducer (12) is transmission-connected to the rotating ring (8) located at the bottom of the dehumidification wheel (10) by arranging a speed reduction transmission part.

2. The dew removal and dehumidification structure for the surface of the rotary plastic molding die according to claim 1, characterized in that: The two hot air boxes (9) are symmetrically arranged on both sides of the dehumidification wheel (10) and are connected to the regeneration zone. The rotating ring (8) and the air guide pipes on both sides of the dehumidification wheel (10) respectively form annular channels to allow the heated air flowing through the regeneration zone to pass through. The driver (11) drives the two hot air boxes (9) to rotate synchronously on both sides of the dehumidification wheel (10) through a reduction component. The hot air boxes (9) are arranged on both sides of the dehumidification wheel (10), and the ratio of the area in contact with the dehumidification wheel (10) to the cross-sectional area of the dehumidification wheel (10) is equal to P.

3. The dew removal and dehumidification structure for the surface of the rotary plastic molding die according to claim 2, wherein: The air guide pipe comprises an upper air cylinder (5) and a lower air cylinder (7); the top end of the rotating shaft (6) is rotatably connected to the upper air cylinder (5) through a connecting component; the bottom end of the rotating shaft (6) is rotatably connected to the lower air cylinder (7) through a connecting component; two rotating rings (8) are rotatably connected to the inner wall of the upper air cylinder (5) and the lower air cylinder (7) on a side away from the dehumidification wheel (10) through a sealing bearing 1 respectively; a filter plate (91) is fixed to the inner side of each hot air box (9); an upper support plate (3) is fixed to the bottom of the upper air cylinder (5); and one end of one of the rotating rings (8) close to the dehumidification wheel (10) is rotatably connected to the inner side of the upper support plate (3) through one of the sealing bearings 2; a bottom plate (13) is fixed to the top of the lower air cylinder (7); and one end of the other rotating ring (8) close to the dehumidification wheel (10) is rotatably connected to the inner side of the bottom plate (13) through another sealing bearing 2.

4. The dew removal and dehumidification structure for the surface of the rotary plastic molding die according to claim 3, characterized in that: The top of the bottom plate (13) is fixed with a lower support plate (4), the outside of the lower support plate (4) is fixed with a base plate (1), the bottom of the base plate (1) is fixed with a sealing box (2), the top of the base plate (1) is fixed with three vertical rods, and the dehumidification wheel (10) is rotatably clamped to the top of the lower support plate (4). The top of the rotating ring (8) near the bottom end of the rotating shaft (6) is in contact with the bottom of the dehumidification wheel (10).

5. The dew removal and dehumidification structure for the surface of the rotary plastic molding die according to claim 4, characterized in that: The upper support plate (3) is slidably clamped to the outside of the three vertical rods. One end of each vertical rod away from the base plate (1) is fixed with an elastic member, and the other end of each elastic member is fixed to the top of the upper support plate (3). The elastic member presses the rotating ring (8) rotatably connected to the inside of the upper support plate (3) against the top of the dehumidification wheel (10).

6. The dew removal and dehumidification structure for the surface of the rotary plastic molding die according to claim 3, characterized in that: The driver (11) is fixed to the outside of one of the vertical rods, and a transmission member is provided between the driver (11) and the speed reduction assembly for transmission connection.

7. The surface dew removal and dehumidification structure of the rotary plastic molding die according to claim 3, characterized in that: A fourth bevel gear (15) is fixed to the inside of the lower air cylinder (7). A cleaning member (14) is arranged inside the fourth bevel gear (15). The outside of the cleaning brush (16) is fixed with a cleaning brush (16), and the cleaning member (14) is assembled to drive the cleaning brush (16) to clean the bottom of the dehumidification wheel (10) by using the force of the rotation of the rotating ring (8).

8. The dew removal and dehumidification structure for the surface of the rotary plastic molding die according to claim 7, wherein: The cleaning member (14) includes a bracket (141). The bracket (141) is fixed to the outside of the hot air box (9) inside the lower air cylinder (7). The top of the bracket (141) is rotatably connected through the other end of the rotating shaft (6) with a rotating rod (142). A first bevel gear (147) is fixed to the side of the rotating rod (142) away from the dehumidification wheel (10), and the first bevel gear (147) meshes with the fourth bevel gear (15). A second bevel gear (143) is fixed to the other end of the rotating shaft (6). A round rod (145) is rotatably connected inside the rotating ring (8) located inside the lower air cylinder (7). A third bevel gear (146) is fixed to the end of the round rod (145) close to the rotating ring (8). The third bevel gear (146) meshes with the second bevel gear (143). The cleaning brush (16) is fixed to the outside of the round rod (145). A collecting shell (17) is fixed to the top of the bracket (141). An inclined plate (171) is fixed to one side of the collecting shell (17). A cross plate (172) is fixed to the inside of the collecting shell (17).

9. The operation method of the surface dew removal and dehumidification structure of the rotary plastic molding die according to claim 8, characterized in that: S1. According to the actual production requirements, reduce the occupied area ratio of the regeneration connection assembly on the surface of the dehumidification wheel (10), and set the speed ratio or differential ratio; S2. According to the set speed ratio or differential ratio, by adjusting the speed reduction assembly, when the driver (11) drives the regeneration connection assembly and the dehumidification wheel (10) to rotate, a speed difference is generated; S3. According to the changes in the actual production activities, adjust the speed ratio or differential ratio through the speed reducer (12); S4. When the regeneration connection assembly rotates, the cleaning brush (16) cleans the bottom of the dehumidification wheel (10).

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