A storage box injection mold

Abstract

The utility model discloses a kind of storage box injection mould, including the lower mould for storage box injection, the upper part of lower mould is provided with upper mould, the inside of the left side of the front and rear two sides of lower mould is provided with first hollow block, two groups of first hollow block are communicated by communicating pipe, the inside of upper mould and lower mould is provided with second hollow block, first hollow block located in front side is communicated with second hollow block located below by conveying pipe, by the setting of first hollow block and second hollow block, air conveying assembly is sent to the second hollow block of upside, air subsequently enters the first hollow block of rear side by communicating component, then pass through the communicating pipe between adjacent first hollow block, flow to the first hollow block of front side, again by conveying pipe into the second hollow block below, air extraction assembly is extracted from first hollow block and second hollow block, can effectively take away the heat of upper mould and lower mould, improve the cooling speed of upper mould and lower mould.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology for storage boxes, specifically to an injection mold for a storage box. Background Technology

[0002] Injection molds are tools used to produce plastic products; they also give plastic products a complete structure and precise dimensions. Injection molding is a processing method used for the mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into the mold cavity under high pressure by an injection molding machine, and after cooling and solidification, the molded product is obtained. Plastic packaging boxes are packaging tools frequently used in modern production and life. Due to their relatively simple structure, they are generally mass-produced using injection molds. After the raw materials are injected into the mold, they are cooled and unloaded.

[0003] Currently, Chinese patent CN220362901 U discloses a packaging box injection mold, including a movable plate. Support plates are fixedly installed on both sides of the top of the movable plate, and support rods are fixedly installed at the four corners of the bottom. A central shaft is rotatably installed at the center of the top. A lower mold is fixedly sleeved at the top of the central shaft, and a first sprocket is fixedly sleeved at the bottom. A single fixed plate is fixedly installed on the top of the two support plates, and a hydraulic press is fixedly installed at the bottom of the fixed plate. An upper mold is rotatably connected to the output shaft of the hydraulic press via bearings. Four compression blocks are fixedly installed at equal intervals at the bottom of the upper mold. This packaging box injection mold can complete the injection molding of four products at once, with good overall cooling effect, facilitating rapid demolding, and achieving high production efficiency for packaging boxes.

[0004] The aforementioned packaging box injection mold still has some problems in use. Although a cooling fan and air inlet are provided, the air inlet is only opened on the support plate, which may result in insufficient airflow into the mold. The heat dissipation effect may not be ideal for the large amount of heat generated during the injection process. Especially during long-term continuous production, this may affect the service life of the mold and the quality of the injection molded products. Utility Model Content

[0005] The purpose of this invention is to provide a storage box injection mold to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A storage box injection mold includes a lower mold for injection molding the storage box. An upper mold is provided on the upper part of the lower mold. First hollow blocks are provided on the front and rear sides and the interior of the left side of the lower mold. Two adjacent sets of first hollow blocks are connected by a connecting pipe. Second hollow blocks are provided inside both the upper mold and the lower mold. The first hollow block located on the front side is connected to the second hollow block located below it through a conveying pipe. An air extraction component is provided on the right side of the lower mold to extract air from the first and second hollow blocks. An air supply component is provided on the right side of the lower mold and on the side of the air extraction component to supply air to the second hollow block located on the upper side. One side of the second hollow block is connected to the first hollow block located on the rear side through a connecting component. Several sets of heat sinks are fixedly connected to the inner walls of the first and second hollow blocks.

[0008] As a preferred technical solution, the connecting component includes an air supply hole opened on the upper rear side of the lower mold. The inner cavity of the air supply hole is connected to the inner cavity of the second hollow block located below. An air supply pipe is connected to one side of the second hollow block located above. The other end of the air supply pipe is bent downward and sealed and inserted into the inner cavity of the air supply hole.

[0009] As a preferred technical solution, the air supply assembly includes a square groove in the middle of the right side of the lower mold, a fan is provided in the inner cavity of the square groove, an air inlet is provided inside the right side of the lower mold, one end of the air inlet is connected to the inner cavity of the square groove, the other end of the air inlet is bent outward and internally sealed with an air guide pipe, the end of the air guide pipe is sealed upward and passes through the upper mold and is connected to the second hollow block located on the upper side, and a filter assembly is provided on the right side of the lower mold for filtering the gas entering the fan to prevent dust from entering the air inlet.

[0010] As a preferred technical solution, the air extraction assembly includes an air outlet on the right side surface of the lower mold, the inner cavity of the air outlet is connected to the inner cavity of the second hollow block located on the lower side, an exhaust fan is inserted into the inner cavity of the air outlet, and an air suction pipe is fixedly connected to the right side of the lower mold and at a position corresponding to the air outlet, and a sealing cap is threaded to the end of the air suction pipe.

[0011] As a preferred technical solution, the filter assembly includes an air inlet pipe connected to the right side of the lower mold via a detachable component. The air inlet end of the fan is located in the inner cavity of the air inlet pipe. A groove is provided at the end of the air inlet pipe, and a filter plate is placed in the groove at the end of the air inlet pipe. An internal threaded ring for fixing the filter plate is threaded to the end of the air inlet pipe. A cleaning component for cleaning dust on the surface of the filter plate is provided in the inner cavity of the air inlet pipe.

[0012] As a preferred technical solution, the detachable component includes a connecting annular groove formed on the right side of the lower mold and located on the outer circular surface of the square groove. The inner cavity of the connecting annular groove is threadedly connected to a threaded tube, and the end of the threaded tube is at the end of the air inlet pipe.

[0013] As a preferred technical solution, the cleaning assembly includes a transmission rod disposed inside the air intake pipe. One end of the transmission rod is keyed to the output shaft of the fan, and the other end of the transmission rod is connected to the filter plate outside the pipe and to the housing through a fixing member. The housing has mounting grooves at both ends and on the side closer to the filter plate. The inner cavity of each mounting groove is provided with a scraper. The outer sides of both sides of the housing are provided with anti-detachment members for limiting the corresponding scraper to prevent it from falling out.

[0014] As a preferred technical solution, the anti-detachment component includes circular cylinders respectively connected to the outer sides of both ends of the housing. Each set of circular cylinders has a pull rod in its inner cavity. The end of each set of pull rods extends into the inner cavity of the mounting groove and is fixedly connected to a threaded rod. The scraper surface is provided with threaded holes at positions corresponding to each set of threaded rods. Each set of threaded rods is threadedly connected to the inner cavity of the corresponding side threaded hole. Each set of circular cylinders has an elastic pushing component in its inner cavity that pushes the pull rod inward to increase the contact force between the scraper and the filter plate. The other end of each set of pull rods extends outward through the circular cylinder.

[0015] As a preferred technical solution, the fastener includes a connecting strip fixedly connected to the end of the transmission rod, the connecting strip being inserted into the middle of the housing, a fixing bolt being inserted into the top of the housing, and the end of the fixing bolt penetrating downward through the housing and threadedly connected to the top surface of the connecting strip.

[0016] As a preferred technical solution, the elastic propulsion member is fixedly sleeved on the disc on the surface of each set of pull rods located inside the cylindrical cylinder, and a spring is sleeved on the surface of the pull rod located between the disc and the inner wall of the cylindrical cylinder.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model, through the arrangement of a first hollow block and a second hollow block, allows the air supply component to deliver air to the upper second hollow block. The air then enters the rear first hollow block through the connecting component, flows forward to the front first hollow block through the connecting pipe between adjacent first hollow blocks, and then enters the lower second hollow block through the supply pipe. Finally, the air extraction component extracts the air from the first and second hollow blocks, effectively removing heat from the upper and lower molds, improving the cooling rate of the upper and lower molds, and thus ensuring the service life of the upper and lower molds and the quality of the injection molded products.

[0019] 2. Through the setting of the air supply component, the fan serves as the power source of the air supply component, which can quickly transport outside air to the upper second hollow block, providing sufficient cold air for the heat dissipation of the mold and ensuring the power and flow of air circulation.

[0020] 3. Through the setting of the filter assembly, the filter plate can filter the air entering the air intake pipe, preventing dust from entering the second hollow block. At the same time, the internal threaded ring can ensure the stable installation of the filter plate in the air intake pipe, preventing the filter plate from shifting or falling off during air flow, ensuring the filtration effect. Furthermore, loosening the internal threaded ring can facilitate the removal of the filter plate, improving maintenance convenience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a storage box injection mold according to the present invention;

[0022] Figure 2 This is a cross-sectional structural diagram of the lower mold of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the connecting annular groove of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first hollow block of this utility model;

[0025] Figure 5 This is a cross-sectional structural diagram of the shell of this utility model.

[0026] In the picture:

[0027] 100. Lower mold; 101. Upper mold; 102. Suction pipe; 103. Sealing cap; 104. Air outlet; 105. Air inlet; 107. Exhaust fan; 108. Air outlet; 109. First hollow block; 110. Connecting pipe; 111. Heat sink; 112. Conveying pipe; 113. Air supply pipe; 114. Air guide pipe; 115. Connecting annular groove; 116. Square groove; 117. Second hollow block;

[0028] 200. Intake pipe; 201. Filter plate; 202. Internal threaded ring; 203. Threaded pipe;

[0029] 300. Housing; 301. Fixing bolt; 302. Connecting strip; 303. Transmission rod; 304. Mounting groove; 305. Scraper; 306. Threaded hole; 307. Threaded rod; 308. Circular cylinder; 309. Spring; 310. Pull rod; 311. Disc; 312. Fan. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-5 This embodiment provides a storage box injection mold, including a lower mold 100 for injection molding the storage box. An upper mold 101 is provided on the upper part of the lower mold 100. First hollow blocks 109 are provided on the front and rear sides and the interior of the left side of the lower mold 100. Two adjacent sets of first hollow blocks 109 are connected by a connecting pipe 110. Second hollow blocks 117 are provided inside both the upper mold 101 and the lower mold 100. The first hollow block 109 located on the front side is connected to the second hollow block 117 located below it via a conveying pipe 112. An air extraction assembly is provided on the right side of the lower mold 100 to extract air from the first hollow blocks 109 and the second hollow blocks 117. An air supply assembly is provided on the right side of the lower mold 100, located on the side of the air extraction assembly, to supply air to the second hollow block 117 located above it. One side of the second hollow block 117 is connected to the first hollow block 117 located behind it via a connecting assembly. Blocks 109 are connected. Several sets of heat sinks 111 are fixedly connected to the inner walls of the first hollow block 109 and the second hollow block 117. Through the arrangement of the first hollow block 109 and the second hollow block 117, the air supply component delivers air to the upper second hollow block 117. The air then enters the rear first hollow block 109 through the connecting component, then flows forward to the front first hollow block 109 through the connecting pipe 110 between adjacent first hollow blocks 109, and then enters the lower second hollow block 117 through the supply pipe 112. Finally, the air extraction component extracts the air from the first hollow block 109 and the second hollow block 117, which can effectively remove the heat of the upper mold 101 and the lower mold 100, improve the cooling speed of the upper mold 101 and the lower mold 100, and thus ensure the service life of the upper mold 101 and the lower mold 100 and the quality of the injection molded product.

[0032] The first hollow block 109 and the second hollow block 117 are made of one or more of the following materials: aluminum, P20 steel, H13 steel, and copper.

[0033] The connecting component includes an air outlet 104 located on the upper rear side of the lower mold 100. The inner cavity of the air outlet 104 is connected to the inner cavity of the lower second hollow block 117. An air supply pipe 113 is connected to one side of the upper second hollow block 117. The other end of the air supply pipe 113 is bent downward and sealed and inserted into the inner cavity of the air outlet 104. Through the setting of the connecting component, the connection between the upper mold 101, the lower mold 100, the second hollow block 117, and the first hollow block 109 is realized, ensuring the integrity of the gas circulation path and allowing air to circulate smoothly inside the mold, thus ensuring the effective operation of the heat dissipation system.

[0034] The air supply component includes a square groove 116 located in the middle of the right side of the lower mold 100. A fan 312 is installed inside the cavity of the square groove 116. An air inlet 105 is provided inside the right side of the lower mold 100. One end of the air inlet 105 is connected to the cavity of the square groove 116, and the other end of the air inlet 105 is bent outward and internally sealed with an air guide pipe 114. The end of the air guide pipe 114 is sealed upward and passes through the upper mold 101 and is connected to the second hollow block 117 located on the upper side. A filter component is provided on the right side of the lower mold 100 to filter the air entering the fan 312 to prevent dust from entering the air inlet 105. Through the setting of the air supply component, the fan 312, as the power source of the air supply component, can quickly deliver outside air to the second hollow block 117 on the upper side, providing sufficient cold air for the heat dissipation of the mold and ensuring the power and flow of air circulation.

[0035] The air extraction assembly includes an air outlet 108 on the right side surface of the lower mold 100. The inner cavity of the air outlet 108 is connected to the inner cavity of the second hollow block 117 located on the lower side. An exhaust fan 107 is inserted into the inner cavity of the air outlet 108. An air suction pipe 102 is fixedly connected to the right side of the lower mold 100 at a position corresponding to the air outlet 108. A sealing cap 103 is threaded to the end of the air suction pipe 102. Through the air extraction assembly, the exhaust fan 107 extracts hot air from inside the mold through the air outlet 108. In conjunction with the air supply assembly, air circulation is formed to ensure that the heat inside the mold can be continuously removed, maintaining the heat dissipation effect of the mold. Furthermore, the air suction pipe 102 and the sealing cap 103 facilitate the maintenance and cleaning of the air extraction assembly. At the same time, when not in use, the air suction pipe 102 can be sealed to prevent external debris from entering the air extraction system, ensuring the normal operation of the air extraction assembly.

[0036] The filter assembly includes an air inlet pipe 200 connected to the right side of the lower mold 100 via a detachable component. The air inlet end of the fan 312 is located inside the air inlet pipe 200. A groove is provided at the end of the air inlet pipe 200, and a filter plate 201 is placed in the groove at the end of the air inlet pipe 200. An internal threaded ring 202 for fixing the filter plate 201 is threadedly connected to the end of the air inlet pipe 200. A cleaning component for cleaning dust from the surface of the filter plate 201 is provided inside the air inlet pipe 200. Through the filter assembly, the filter plate 201 can filter the air entering the air inlet pipe 200, preventing dust from entering the second hollow block 117. At the same time, the internal threaded ring 202 can ensure the stable installation of the filter plate 201 inside the air inlet pipe 200, preventing the filter plate 201 from shifting or falling off during airflow, ensuring the filtration effect. Furthermore, loosening the internal threaded ring 202 makes it easy to remove the filter plate 201, improving maintenance convenience.

[0037] The detachable component includes a connecting annular groove 115 located on the right side of the lower mold 100 and on the outer circular surface of the square groove 116. A threaded tube 203 is threadedly connected to the inner cavity of the connecting annular groove 115. The end of the threaded tube 203 is at the end of the air inlet pipe 200. The detachable component facilitates quick disassembly and installation of the air inlet pipe 200. When maintaining and cleaning the filter plate 201, the air inlet pipe 200 can be quickly removed from the lower mold 100, improving work efficiency. At the same time, it ensures the connection strength and sealing between the air inlet pipe 200 and the lower mold 100, preventing air leakage at the connection and ensuring the normal operation of the air delivery component and the air filtration effect.

[0038] The cleaning component includes a transmission rod 303 located inside the air intake pipe 200. One end of the transmission rod 303 is keyed to the output shaft of the fan 312, and the other end of the transmission rod 303 extends outward to the filter plate 201 and is connected to the housing 300 via a fastener. The housing 300 has mounting grooves 304 at both ends, near the filter plate 201. Scrapers 305 are provided inside the mounting grooves 304. Anti-detachment components are provided on both outer sides of the housing 300 to limit the corresponding scrapers 305 and prevent them from detaching. By using the cleaning component, the fan 312 drives the transmission rod 303 and the housing 300 to rotate, effectively removing dust adhering to the surface of the filter plate 201, maintaining the air permeability of the filter plate 201, ensuring the efficiency of air passing through the filter plate 201, maintaining the normal air intake of the air supply component, and ensuring the stable operation of the mold heat dissipation system.

[0039] The anti-detachment component includes circular cylinders 308 connected to the outer sides of both ends of the housing 300. Each set of circular cylinders 308 has a pull rod 310 inside its cavity. The end of each pull rod 310 extends into the cavity of the mounting groove 304 and is fixedly connected to a threaded rod 307. Threaded holes 306 are provided on the surface of the scraper 305 at positions corresponding to each set of threaded rods 307. Each set of threaded rods 307 is threaded into the cavity of the corresponding threaded hole 306. Each set of circular cylinders 308 has an elastic pushing component that pushes the pull rods 310 inward, thereby increasing the contact force between the scraper 305 and the filter plate 201. The other end of each pull rod 310 extends outward through the circular cylinder 308. The anti-detachment component and the threaded connection between the threaded rods 307 and the threaded holes 306 facilitate the installation and removal of the scraper 305, making it easy to replace and maintain the scraper 305.

[0040] The fastener includes a connecting strip 302 fixedly connected to the end of the transmission rod 303. The connecting strip 302 is inserted into the middle of the housing 300. A fixing bolt 301 is inserted into the top of the housing 300. The end of the fixing bolt 301 penetrates downward through the housing 300 and is threaded to the top surface of the connecting strip 302. Through the setting of the fastener, a reliable connection between the transmission rod 303 and the housing 300 is achieved, ensuring that the transmission rod 303 can stably transmit the power of the fan 312 to the housing 300, so that the scraper 305 can rotate normally to clean the surface of the filter plate 201. Furthermore, the structure is simple, easy to install and disassemble, and convenient for maintenance and repair of the cleaning components. When it is necessary to inspect or replace the housing 300 or the transmission rod 303, the fixing bolt 301 can be quickly disassembled for operation, improving work efficiency.

[0041] The elastic propulsion component is fixedly sleeved on the disc 311 on the surface of the pull rod 310 located inside the cylindrical cylinder 308. A spring 309 is sleeved on the surface of the pull rod 310 located between the disc 311 and the inner wall of the cylindrical cylinder 308. With the setting of the spring 309, it can automatically adapt to the wear of the scraper 305 and the changes on the surface of the filter plate 201 during the cleaning process, always maintain good contact between the scraper 305 and the filter plate 201, extend the service life of the scraper 305, and improve the reliability and stability of the cleaning component.

[0042] Working principle;

[0043] First, install the lower mold 100 and upper mold 101 for injection molding of the storage box into their respective positions on the injection molding machine. Check the first hollow block 109 on the front and rear sides and the inside of the left side of the lower mold 100, as well as the second hollow block 117 inside the upper mold 101 and the lower mold 100, to ensure that their internal structure is intact and that the connecting channels such as the connecting pipe 110, the conveying pipe 112, and the air supply hole 104 are unobstructed.

[0044] Prepare the raw materials to be injected and place them in the corresponding positions of the injection molding machine. According to the injection requirements of the storage box, adjust the various parameters of the injection molding machine, such as temperature, pressure, and injection speed. Start the injection molding machine and inject the molten plastic raw materials into the cavity composed of the upper mold 101 and the lower mold 100. During the injection process, the heat dissipation fins 111 on the inner walls of the first hollow block 109 and the second hollow block 117 can help dissipate the heat generated by the mold during the injection process, so that the mold temperature is kept within a suitable range, which is beneficial to the molding of plastic.

[0045] Subsequently, the air supply assembly delivers air to the upper second hollow block 117. The air then enters the rear first hollow block 109 through the air guide pipe 114, then flows forward to the front first hollow block 109 through the connecting pipe 110 between adjacent first hollow blocks 109, and then enters the lower second hollow block 117 through the supply pipe 112. Finally, the air extraction assembly extracts the air from the first hollow block 109 and the second hollow block 117, forming a complete air circulation path. This effectively removes heat from the upper mold 101 and the lower mold 100, thereby improving the cooling efficiency of the storage box.

[0046] Furthermore, the filter plate 201 filters dust in the air, allowing surface dust to enter the first hollow block 109 and the second hollow block 117. Simultaneously, as the fan 312 rotates, it drives the housing 300 to rotate via the transmission rod 303, thereby causing the scraper 305 in the mounting groove 304 on the surface of the housing 300 to clean the dust adhering to the surface of the filter plate 201, effectively preventing dust adhering to the surface of the filter plate 201 from affecting the efficiency of air passing through the filter plate 201.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A storage box injection mold, characterized in that, The device includes a lower mold (100) for injection molding a storage box. An upper mold (101) is provided on the upper part of the lower mold (100). First hollow blocks (109) are provided on the front and rear sides and the interior of the left side of the lower mold (100). Two adjacent sets of first hollow blocks (109) are connected by a connecting pipe (110). Second hollow blocks (117) are provided inside both the upper mold (101) and the lower mold (100). The first hollow block (109) located on the front side is connected to the second hollow block (117) located below it through a conveying pipe (112). The lower mold (100) is provided with an air extraction component on the right side to extract air from the first hollow block (109) and the second hollow block (117). The lower mold (100) is provided with an air supply component on the right side and on the side of the air extraction component to supply air to the second hollow block (117) located on the upper side. One side of the second hollow block (117) is connected to the first hollow block (109) located on the rear side through a connecting component. Several sets of heat sinks (111) are fixedly connected to the inner walls of the first hollow block (109) and the second hollow block (117).

2. The storage box injection mold according to claim 1, characterized in that: The connecting component includes an air inlet (104) opened on the upper rear side of the lower mold (100). The inner cavity of the air inlet (104) is connected to the inner cavity of the lower second hollow block (117). An air supply pipe (113) is connected to one side of the upper second hollow block (117). The other end of the air supply pipe (113) is bent downward and sealed and inserted into the inner cavity of the air inlet (104).

3. The injection mold for a storage box according to claim 2, characterized in that: The gas delivery assembly includes a square groove (116) located in the middle of the right side of the lower mold (100). A fan (312) is provided in the inner cavity of the square groove (116). An air inlet (105) is provided inside the right side of the lower mold (100). One end of the air inlet (105) is connected to the inner cavity of the square groove (116). The other end of the air inlet (105) is bent outward and internally sealed with a guide pipe (114). The end of the guide pipe (114) is sealed upward and passes through the upper mold (101) and is connected to the second hollow block (117) located on the upper side. A filter assembly is provided on the right side of the lower mold (100) for filtering the gas entering the fan (312) to prevent dust from entering the air inlet (105).

4. The injection mold for a storage box according to claim 3, characterized in that: The air extraction assembly includes an air outlet (108) on the right side surface of the lower mold (100). The inner cavity of the air outlet (108) is connected to the inner cavity of the second hollow block (117) located on the lower side. An exhaust fan (107) is inserted into the inner cavity of the air outlet (108). An air suction pipe (102) is fixedly connected to the right side of the lower mold (100) at a position corresponding to the air outlet (108). A sealing cap (103) is threaded to the end of the air suction pipe (102).

5. The injection mold for a storage box according to claim 3, characterized in that: The filter assembly includes an air inlet pipe (200) connected to the right side of the lower mold (100) via a detachable component. The air inlet end of the fan (312) is located in the inner cavity of the air inlet pipe (200). A groove is provided at the end of the air inlet pipe (200). A filter plate (201) is placed in the groove at the end of the air inlet pipe (200). An internal threaded ring (202) for fixing the filter plate (201) is threadedly connected to the end of the air inlet pipe (200). A cleaning component for cleaning dust on the surface of the filter plate (201) is provided in the inner cavity of the air inlet pipe (200).

6. The injection mold for a storage box according to claim 5, characterized in that: The detachable component includes a connecting annular groove (115) located on the right side of the lower mold (100) and on the outer circular surface of the square groove (116). The inner cavity of the connecting annular groove (115) is threadedly connected to a threaded pipe (203), and the end of the threaded pipe (203) is at the end of the air inlet pipe (200).

7. The storage box injection mold according to claim 6, characterized in that: The cleaning assembly includes a transmission rod (303) disposed inside the air intake pipe (200). One end of the transmission rod (303) is keyed to the output shaft of the fan (312). The other end of the transmission rod (303) is connected to the filter plate (201) and a housing (300) is connected to it by a fastener. The housing (300) has mounting grooves (304) at both ends and on the side closer to the filter plate (201). The inner cavity of the mounting groove (304) is provided with scrapers (305). The outer sides of both sides of the housing (300) are provided with anti-detachment parts for limiting the corresponding scrapers (305) to prevent them from falling out.

8. The injection mold for a storage box according to claim 7, characterized in that: The anti-detachment component includes a circular cylinder (308) connected to the outer sides of both ends of the housing (300). Each set of circular cylinders (308) has a pull rod (310) in its inner cavity. The end of each set of pull rods (310) extends into the inner cavity of the mounting groove (304) and is fixedly connected to a threaded rod (307). The scraper (305) has a threaded hole (306) on its surface and at a position corresponding to each set of threaded rods (307). Each set of threaded rods (307) is threaded into the inner cavity of the corresponding side threaded hole (306). Each set of circular cylinders (308) has an elastic pusher that pushes the pull rod (310) inward to increase the contact force between the scraper (305) and the filter plate (201). The other end of each set of pull rods (310) extends outward through the circular cylinder (308).

9. The injection mold for a storage box according to claim 8, characterized in that: The fastener includes a connecting strip (302) fixedly connected to the end of the transmission rod (303). The connecting strip (302) is inserted into the middle of the housing (300). A fixing bolt (301) is inserted into the top of the housing (300). The end of the fixing bolt (301) penetrates downward through the housing (300) and is threaded to the top surface of the connecting strip (302).

10. A storage box injection mold according to claim 9, characterized in that: The elastic propulsion member is fixedly sleeved on the disc (311) on the surface of the pull rod (310) located inside the cylindrical tube (308), and a spring (309) is sleeved on the surface of the pull rod (310) located between the disc (311) and the inner wall of the cylindrical tube (308).

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