Injection molding apparatus and method of use to prevent flow channel blockage

Abstract

This invention discloses an injection molding device and its usage method for preventing flow channel blockage, relating to the field of injection molding machine technology. It includes an injection molding machine body and a mounting turntable. The injection molding machine body is fixedly mounted on the upper end of the mounting platform, and a discharge head is fixedly mounted on the upper end of the mounting platform. A first filter screen is slidably installed in several mounting holes on the mounting turntable. One end of the mounting turntable is fixedly connected to the output end of a rotating shaft motor. Baffle plates are fixedly installed at positions corresponding to the two sides of the mounting turntable on the upper end of the mounting platform. A control mechanism for controlling the motor is provided on the upper inner side of the upper housing. A cleaning mechanism for cleaning the first filter screen is provided at the bottom end of the mounting platform. This invention filters metal impurities in the raw materials by slidably installing sliding tubes on both the output end of the injection molding machine body and the input end of the discharge head, with the mounting turntable positioned between the two sliding tubes, and the first filter screen slidably installed in several mounting holes on the mounting turntable.

Description

Technical Field

[0001] This invention relates to the field of injection molding machine technology, specifically to injection molding equipment and its usage method for preventing flow channel blockage. Background Technology

[0002] The runner is the essential channel through which molten plastic travels from the injection nozzle of the injection machine to the mold cavity. The runner system includes the main runner, branch runners, and gates. Due to the limited space inside the runner, existing injection molding equipment often screens the granular raw material when conveying molten material inside the runner to reduce solid impurities that are difficult to melt. However, some small metal impurities cannot be completely removed during screening, making it extremely easy for them to cause blockage when they enter the runner.

[0003] Chinese patent CN210256847U discloses a filtering device for an injection molding machine hopper. This device generates an upward magnetic field by energizing a solenoid. When the molten plastic solution flows from top to bottom through an insulating tube, the iron filings inside are drawn upward against the flow direction of the plastic solution under the influence of the magnetic field and transported upward by the spiral body, eventually reaching the top of the inner cavity of the insulating tube. This effectively filters out the iron filings and impurities in the plastic solution in a non-contact manner. However, this device cannot adsorb metal impurities such as copper, aluminum, and stainless steel, which are not easily adsorbed by magnets. Therefore, in actual use, it cannot clean metals and other impurities that are not easily adsorbed by magnets, and the flow channel is still easily blocked during use, thus affecting work efficiency.

[0004] Based on this, we now provide injection molding equipment and usage methods that prevent runner blockage, which can eliminate the drawbacks of existing devices. Summary of the Invention

[0005] The purpose of this invention is to provide an injection molding device and method for preventing flow channel blockage, so as to solve the problem of being unable to clean non-ferromagnetic metal impurities.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An injection molding machine for preventing flow channel blockage includes an injection molding machine body and a mounting turntable. The injection molding machine body is fixedly mounted on the upper end of the mounting platform. Several support legs are fixedly mounted on the bottom end of the mounting platform. A discharge head is fixedly mounted on the upper end of the mounting platform at a position corresponding to the output end of the injection molding machine body. A sliding tube is slidably mounted on one end of both the injection molding machine body and the discharge head. A fixed circular plate is fixedly mounted on both the injection molding machine body and the discharge head. A first return spring is fixedly mounted between one side of the fixed circular plate and one side of the sliding tube. First filter screens are slidably mounted in several mounting holes on the mounting turntable. Rotating plates are rotatably mounted on the rotating shafts at both ends of the mounting turntable. The rotating plates are fixedly mounted on the bottom end of the mounting platform. One rotating shaft of the mounting turntable is fixedly connected to the output end of the motor inside the fixed frame at the bottom end of the mounting platform. A rectangular through hole is provided at the upper end of the mounting platform corresponding to the position of the mounting turntable. A baffle plate is fixedly mounted at the upper end of the mounting platform corresponding to the positions on both sides of the mounting turntable. An upper housing is fixedly mounted at the upper end of the mounting platform. A control mechanism for controlling the motor is provided on the upper inner side of the upper housing. A cleaning mechanism for cleaning the first filter screen is provided at the bottom end of the mounting platform.

[0008] Based on the above technical solutions, the present invention also provides the following optional technical solutions:

[0009] In one alternative embodiment: the control mechanism includes a control button, which is fixedly mounted on one side of the upper fixed support plate inside the upper housing. Several fixed plates are fixedly mounted on the first filter screen. Guide grooves are provided in the mounting holes corresponding to the positions of the fixed plates. A second return spring is fixedly mounted between one side of the guide groove and one side of the fixed plate. A toggle plate is fixedly mounted on the upper end of the fixed plate corresponding to the position of the control button. The control button is electrically connected to the controller at the upper end of the upper housing.

[0010] In one alternative embodiment: the cleaning mechanism includes a heating box and a collection pipe. The heating box is fixedly mounted on the upper end of a mounting plate. Several support rods are fixedly mounted on the upper end of the mounting plate. One end of each support rod is fixedly connected to the bottom end of the mounting platform. The input end of the heating box is connected to the output end of an air pump. The air pump is fixedly mounted on the upper end of the mounting plate. A cleaning nozzle is connected to the output end of the heating box. The collection pipe is fixedly mounted on the bottom end of the mounting platform at a position corresponding to the cleaning nozzle. A second filter screen is fixedly mounted inside the collection pipe at one end. A discharge pipe is connected to the collection pipe at a position corresponding to one side of the second filter screen. A collection box is mounted on one end of the discharge pipe. The collection box is fixedly mounted inside the bottom end of the lower housing. The lower housing is fixedly mounted on the bottom end of the mounting platform. A scraping assembly is provided inside the collection pipe to facilitate cleaning one side of the second filter screen.

[0011] In one alternative: the scraping assembly includes a scraper plate, one side of which is in close contact with one side of the second filter screen. The scraper plate is fixedly mounted on one end of a fixed shaft, and a fan blade is fixedly mounted on the other end of the fixed shaft. A support frame is rotatably mounted on the fixed shaft, and the support frame is fixedly mounted inside the mounting turntable.

[0012] In one alternative: the output end of the collection tube is connected to one end of the second transmission tube, the other end of the second transmission tube is aligned with the input end of the air pump, and a fixing connector is fixedly provided on both the second transmission tube and one end of the air pump, and both fixing connectors are tightly attached to the mounting turntable.

[0013] In one alternative: the output end of the heating box is connected to one end of the first transmission pipe, the other end of the first transmission pipe is connected to an arc-shaped connector on one side of a baffle plate, and a guide pipe is fixedly provided on one side of the other baffle plate at the position corresponding to the arc-shaped connector. A stop block is fixedly provided inside the first transmission pipe near the heating box, and a sliding ring is sleeved on the fixed stop block. The sliding ring is slidably disposed inside the first transmission pipe. One side of the sliding ring is fixedly connected to one end of a third reset spring, and a fixed ring is fixedly provided on the other end of the third reset spring. The fixed ring is fixedly disposed inside the first transmission pipe.

[0014] In one alternative: each of the sliding tubes has a sealing groove at the end near the mounting turntable, and each sealing groove has a sealing ring inside.

[0015] In one alternative: the first filter screen is tapered, with the top of the first filter screen facing the output end of the injection molding machine body.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. This invention uses sliding tubes slidably installed on both the output end and the input end of the discharge head of an injection molding machine. A mounting turntable is installed between the two sliding tubes, and a first filter screen is slidably installed in several mounting holes on the mounting turntable. This filters out metallic impurities in the raw materials, solving the problem of not being able to clean non-ferromagnetic metallic impurities and preventing the flow channel from being blocked. At the same time, when the first filter screen is blocked, it drives a dial to press the control button, thereby automatically switching the first filter screen, facilitating continuous operation and increasing the practicality of the injection molding equipment.

[0018] 2. This invention, by setting up a heating box and an air pump, facilitates the heating of air. The second filter screen is cleaned through a cleaning nozzle, and the air entering the collection pipe drives the fan blades to rotate, which in turn drives the scraper to rotate, thereby cleaning one side of the second filter screen and preventing it from becoming clogged. Impurities can be collected through the feed pipe and the collection box. The air inside the collection pipe heats the first filter screen to be used through the second transmission pipe, thus preventing the raw material from solidifying and clogging the first filter screen when switching it, due to its low temperature. This increases the practicality of the injection molding equipment that prevents flow channel blockage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the internal structure of the upper and lower shells of the present invention.

[0021] Figure 3 This is a schematic diagram of the installation of the control button of the present invention.

[0022] Figure 4 This is a schematic diagram of the installation of the feed tube of the present invention.

[0023] Figure 5 This is a schematic diagram of the internal structure of the collection tube of the present invention.

[0024] Figure 6 This is a schematic diagram of the installation of the second transmission tube of the present invention.

[0025] Figure 7 This is a schematic diagram of the internal structure of the first transmission tube of the present invention.

[0026] Figure 8 This is a schematic diagram of the rotating disk installation structure of the present invention.

[0027] Figure reference numerals: 11 Injection molding machine body, 12 Mounting platform, 13 Sliding tube, 14 First return spring, 15 Discharge head, 16 Mounting turntable, 17 First filter screen, 18 Second return spring, 19 Control button, 20 Upper housing, 21 Motor, 22 Baffle plate, 23 Cleaning nozzle, 24 Heating box, 25 Air pump, 26 Collection pipe, 27 Second filter screen, 28 Fan blade, 29 Scraper, 30 Discharge pipe, 31 Collection box, 32 Lower housing, 33 First transmission pipe, 34 Fixed block, 35 Sliding ring, 36 Third return spring, 37 Guide pipe, 38 Second transmission pipe, 39 Mounting plate. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] In one embodiment, such as Figures 1-8 As shown, the injection molding equipment for preventing flow channel blockage includes an injection molding machine body 11 and a mounting turntable 16. The injection molding machine body 11 is fixedly mounted on the upper end of a mounting platform 12. Several support legs are fixedly mounted on the bottom end of the mounting platform 12. A discharge head 15 is fixedly mounted on the upper end of the mounting platform 12 at a position corresponding to the output end of the injection molding machine body 11. A sliding tube 13 is slidably mounted on one end of both the injection molding machine body 11 and the discharge head 15. A fixed circular plate is fixedly mounted on both the injection molding machine body 11 and the discharge head 15. A first return spring 14 is fixedly mounted between one side of the fixed circular plate and one side of the sliding tube 13. A first filter screen 17 is slidably mounted in several mounting holes on the mounting turntable 16. Rotating plates are rotatably mounted on the rotating shafts at both ends of the mounting turntable 16. The rotating plates are fixed... Located at the bottom of the mounting platform 12, one end of the rotating shaft of the mounting turntable 16 is fixedly connected to the output end of the motor 21 inside the fixed frame at the bottom of the mounting platform 12. A rectangular through hole is provided at the upper end of the mounting platform 12 corresponding to the position of the mounting turntable 16. A baffle plate 22 is fixedly provided at the upper end of the mounting platform 12 corresponding to the positions on both sides of the mounting turntable 16. A circular through hole is provided on one side of the baffle plate 22 corresponding to the position of the sliding tube 13. An upper housing 20 is fixedly provided at the upper end of the mounting platform 12. A control mechanism for controlling the motor 21 is provided at the upper end of the inner side of the upper housing 20. A cleaning mechanism for cleaning the first filter screen 17 is provided at the bottom of the mounting platform 12. The motor 21 can be automatically started by the control mechanism, and the cleaning mechanism can clean the surface of the first filter screen 17.

[0031] The control mechanism includes a control button 19, which is fixedly mounted on one side of the upper support plate inside the upper housing 20. Several fixing plates are fixedly mounted on the first filter screen 17. Guide grooves are provided in the mounting holes corresponding to the positions of the fixing plates. A second return spring 18 is fixedly mounted between one side of the guide groove and one side of the fixing plate. A lever is fixedly mounted on the upper end of the fixing plate corresponding to the position of the control button 19. The control button 19 is electrically connected to the controller at the upper end of the upper housing 20. In use, when the surface of the first filter screen 17 is partially blocked, after the injection molding machine body 11 delivers raw material into the mounting hole, the amount of raw material entering the discharge head 15 decreases, causing the raw material on one side of the first filter screen 17 to push the first filter screen 17 to slide. When the first filter screen 17 slides, it drives the lever to move. When one side of the lever presses the control button 19, the control button 19 controls the motor 21 to start through the controller. The output end of the motor 21 drives the mounting turntable 16 to rotate, thereby switching the first filter screen 17.

[0032] The cleaning mechanism includes a heating box 24 and a collection pipe 26. The heating box 24 is fixedly mounted on the upper end of the mounting plate 39. Several support rods are fixedly mounted on the upper end of the mounting plate 39. One end of each support rod is fixedly connected to the bottom end of the mounting platform 12. The input end of the heating box 24 is connected to the output end of the air pump 25. The air pump 25 is fixedly mounted on the upper end of the mounting plate 39. A cleaning nozzle 23 is connected to the output end of the heating box 24. The collection pipe 26 is fixedly mounted on the bottom end of the mounting platform 12 at a position corresponding to the cleaning nozzle 23. A second filter screen 27 is fixedly mounted inside the collection pipe 26. A discharge pipe 30 is connected to the collection pipe 26 at a position corresponding to one side of the second filter screen 27. A collection box 31 is mounted on one end of the discharge pipe 30. The collection box 31 is fixedly mounted on the mounting platform 12. The lower housing 32 is fixedly mounted on the bottom of the mounting platform 12. In use, when the clogged first filter screen 17 is rotated to the position corresponding to the cleaning nozzle 23, the output end of the air pump 25 supplies air to the heating box 24. The heating box 24 heats the air, and the heated air is evenly sprayed out through the cleaning nozzle 23. The heated air back-blown the first filter screen 17 to clean the impurities attached to one side of the first filter screen 17, and at the same time, it can prevent the raw materials attached to the first filter screen 17 from solidifying. The second filter screen 27 intercepts the impurities, and then the impurities fall into the collection box 31 through the feed pipe 30 so that the staff can collect the impurities. The collection pipe 26 is equipped with a scraping component to facilitate cleaning one side of the second filter screen 27.

[0033] The scraping assembly includes a scraper 29, one side of which is in close contact with one side of the second filter screen 27. The scraper 29 is fixedly mounted on one end of a fixed shaft, and a fan blade 28 is fixedly mounted on the other end of the fixed shaft. A support frame is rotatably mounted on the fixed shaft and is fixedly mounted inside the mounting turntable 16. In use, when the cleaning nozzle 23 delivers air into the collection pipe 26, the air is discharged through the output end of the collection pipe 26. As the air flows, it drives the fixed shaft to rotate through the fan blade 28. When the fixed shaft rotates, it drives the scraper 29 to rotate. The scraper 29 cleans the impurities attached to one side of the second filter screen 27, thereby facilitating the impurities to fall into the discharge pipe 30.

[0034] The output end of the collection pipe 26 is connected to one end of the second transmission pipe 38, and the other end of the second transmission pipe 38 is aligned with the input end of the air pump 25. Fixed connectors are fixedly provided on one end of the second transmission pipe 38 and the air pump 25. Both fixed connectors are tightly attached to the mounting turntable 16. In use, the hot air entering the collection pipe 26 enters the second transmission pipe 38. The second transmission pipe 38 discharges the hot air through one end. The discharged hot air can heat the first filter 17 aligned with the input end of the air pump 25 so as to prevent the first filter 17 from cooling the raw material and causing blockage when switching the first filter 17. Then the hot air enters the air pump 25 and is retransmitted to the heating box 24, thereby reducing the working energy consumption of the heating box 24.

[0035] Each sliding tube 13 is provided with a sealing groove at one end near the mounting turntable 16, and a sealing ring is provided in each sealing groove. During use, under the action of the first return spring 14, one end of the sliding tube 13 can be tightly attached to one side of the mounting turntable 16, thereby maintaining a seal during transmission. At the same time, when the mounting turntable 16 rotates, the sealing ring is tightly attached to one side of the mounting turntable 16, which can scrape off the raw material adhering to the surface of the mounting turntable 16.

[0036] The first filter screen 17 is cone-shaped, with the top of the first filter screen 17 facing the output end of the injection molding machine body 11. When in use, it is convenient for the first filter screen 17 to filter the raw materials. When the raw materials flow, the impurities attached to one side of the first filter screen 17 can move to the bottom end of the first filter screen 17, thereby preventing the first filter screen 17 from being blocked too early.

[0037] Example 2

[0038] The difference from Embodiment 1 is that: the output end of the heating box 24 is connected to one end of the first transmission pipe 33, and the other end of the first transmission pipe 33 is connected to an arc-shaped connector on one side of a baffle plate 22. A guide pipe 37 is fixedly provided on one side of the baffle plate 22 at the position corresponding to the arc-shaped connector. A stop block 34 is fixedly provided inside the first transmission pipe 33 near the heating box 24. A sliding ring 35 is sleeved on the fixed stop block 34. The sliding ring 35 is slidably disposed inside the first transmission pipe 33. One side of the sliding ring 35 is fixedly connected to one end of the third return spring 36. A fixed ring is fixedly provided on the other end of the third return spring 36. The fixed ring is fixedly disposed inside the first transmission pipe 33. In use, when the installation turntable 16 switches the first filter 17... When the rotating plate 16 seals one end of the cleaning nozzle 23 and the air pump 25, the air pump 25 supplies air into the heating box 24 through the air inlet pipe at the input end. Because one end of the cleaning nozzle 23 is sealed, the air pressure at the output end of the heating box 24 increases. Under the action of air pressure, the sliding ring 35 slides inside the first transmission pipe 33, causing the sliding ring 35 to disengage from the fixed stop block 34. Thus, the air at the output end of the heating box 24 is output to the inside of the arc-shaped nozzle through the first transmission pipe 33. When the switched first filter 17 rotates to the position corresponding to the arc-shaped connector, the gas inside the arc-shaped connector can blow the raw material remaining inside the first filter 17 into the guide pipe 37. The raw material can be collected by setting a storage box at the corresponding position at one end of the guide pipe 37.

[0039] The above embodiments disclose injection molding equipment for preventing flow channel blockage. When it is necessary to filter impurities inside the raw material, the motor 21 drives the mounting turntable 16 to rotate, aligning a first filter screen 17 with the output end of the injection molding machine body 11. Subsequently, the injection molding machine body 11 conveys molten raw material into the discharge head 15. The first filter screen 17 can filter impurities in the raw material. When the surface of the first filter screen 17 is partially blocked, the raw material on one side of the first filter screen 17 pushes it to slide. As the first filter screen 17 slides, it drives a deflector plate to move. When the deflector plate presses the control button 19, the control button 19 controls the motor 21 to start, thereby filtration of the first filter screen. 17 is switched, and at the same time, the baffle plate 22 can prevent residual raw materials inside the mounting hole from flowing out. At the same time, the mounting turntable 16 seals one end of the cleaning nozzle 23 and the air pump 25, so that the air pump 25 delivers air into the heating box 24 through the air inlet pipe at the input end, which increases the air pressure at the output end of the heating box 24. Under the action of air pressure, the sliding ring 35 slides inside the first transmission pipe 33, causing the sliding ring 35 to disengage from the fixed block 34. Thus, the air at the output end of the heating box 24 is output to the arc-shaped nozzle through the first transmission pipe 33. When the switched first filter 17 rotates to the corresponding position of the arc-shaped connector, the gas inside the arc-shaped connector can remove the residual raw materials inside the first filter 17. Raw materials are blown into the feed pipe 37. A storage box is installed at one end of the feed pipe 37 to collect the raw materials. When the clogged first filter 17 rotates to the position corresponding to the cleaning nozzle 23, the output of the air pump 25 supplies air into the heating box 24. The heating box 24 heats the air, and the heated air is evenly sprayed out through the cleaning nozzle 23. The heated air backflushs the first filter 17, cleaning impurities attached to one side of the first filter 17 and preventing the raw materials attached to the first filter 17 from solidifying. The second filter 27 intercepts impurities, and the air is discharged through the output of the collection pipe 26. The air flows through the fan blades 2... 8 drives the fixed shaft to rotate, and when the fixed shaft rotates, it drives the scraper 29 to rotate. The scraper 29 cleans the impurities attached to one side of the second filter screen 27, so that the impurities can fall into the feed pipe 30. Then, the hot air inside the collection pipe 26 enters the second transmission pipe 38. The second transmission pipe 38 discharges the hot air through one end. The discharged hot air can heat the first filter screen 17, which is aligned with the input end of the air pump 25, so as to prevent the first filter screen 17 from cooling the raw material and causing blockage when switching the first filter screen 17. Then, the hot air enters the air pump 25 and is retransmitted to the heating box 24.

[0040] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. An injection molding machine for preventing flow channel blockage, comprising an injection molding machine body (11) and a mounting turntable (16), wherein the injection molding machine body (11) is fixedly mounted on the upper end of a mounting platform (12), and a plurality of support legs are fixedly mounted on the bottom end of the mounting platform (12), and a discharge head (15) is fixedly mounted on the upper end of the mounting platform (12) at a position corresponding to the output end of the injection molding machine body (11), and a sliding tube (13) is slidably mounted on one end of the injection molding machine body (11) and the discharge head (15), and a fixed circular plate is fixedly mounted on both the injection molding machine body (11) and the discharge head (15), and a first return spring (14) is fixedly mounted between one side of the fixed circular plate and one side of the sliding tube (13), characterized in that, The first filter screen (17) is slidably installed in several mounting holes on the mounting turntable (16). Rotating plates are rotatably installed on the rotating shafts at both ends of the mounting turntable (16). The rotating plates are fixedly installed at the bottom of the mounting platform (12). The rotating shaft at one end of the mounting turntable (16) is fixedly connected to the output end of the motor (21) in the fixed frame at the bottom of the mounting platform (12). A rectangular through hole is provided at the upper end of the mounting platform (12) corresponding to the position of the mounting turntable (16). A baffle plate (22) is fixedly installed at the upper end of the mounting platform (12) corresponding to the positions on both sides of the mounting turntable (16). An upper housing (20) is fixedly installed at the upper end of the mounting platform (12). A control mechanism for controlling the motor (21) is provided at the upper inner side of the upper housing (20). A cleaning mechanism for cleaning the first filter screen (17) is provided at the bottom of the mounting platform (12). The control mechanism includes a control button (19), which is fixedly installed on one side of the fixed support plate at the upper end of the upper housing (20). Several fixed plates are fixedly installed on the first filter screen (17). Guide grooves are provided in the mounting holes corresponding to the positions of the fixed plates. A second return spring (18) is fixedly installed between one side of the guide groove and one side of the fixed plate. A toggle plate is fixedly installed at the upper end of the fixed plate corresponding to the position of the control button (19). The control button (19) is electrically connected to the controller at the upper end of the upper housing (20). The cleaning mechanism includes a heating box (24) and a collection pipe (26). The heating box (24) is fixedly mounted on the upper end of the mounting plate (39). Several support rods are fixedly mounted on the upper end of the mounting plate (39). One end of each support rod is fixedly connected to the bottom end of the mounting platform (12). The input end of the heating box (24) is connected to the output end of an air pump (25). The air pump (25) is fixedly mounted on the upper end of the mounting plate (39). A cleaning nozzle (23) is connected to the output end of the heating box (24). The collection pipe (26) is fixedly mounted on the bottom end of the mounting platform (12) and... The collection pipe (26) is fixedly provided with a second filter screen (27) at one end, and a discharge pipe (30) is connected to the collection pipe (26) at the position corresponding to the position of the second filter screen (27). A collection box (31) is provided at one end of the discharge pipe (30). The collection box (31) is fixedly provided at the bottom of the lower housing (32). The lower housing (32) is fixedly provided at the bottom of the mounting platform (12). The collection pipe (26) is provided with a scraping assembly for cleaning one side of the second filter screen (27). The scraping assembly includes a scraper (29), one side of which is in close contact with one side of the second filter screen (27). The scraper (29) is fixedly mounted on one end of a fixed shaft, and a fan blade (28) is fixedly mounted on the other end of the fixed shaft. A support frame is rotatably mounted on the fixed shaft, and the support frame is fixedly mounted inside the collection pipe (26). The output end of the collection tube (26) is connected to one end of the second transmission tube (38), and the other end of the second transmission tube (38) is aligned with the input end of the air pump (25). Fixed connectors are fixedly provided on one end of the second transmission tube (38) and the air pump (25), and both fixed connectors are tightly attached to the mounting turntable (16). The output end of the heating box (24) is connected to one end of the first transmission pipe (33), and the other end of the first transmission pipe (33) is connected to an arc joint on one side of a baffle plate (22). A guide pipe (37) is fixedly provided on one side of the baffle plate (22) at the position corresponding to the arc joint. A fixed block (34) is fixedly provided inside the first transmission pipe (33) near the heating box (24). A sliding ring (35) is sleeved on the fixed block (34). The sliding ring (35) is slidably disposed inside the first transmission pipe (33). One side of the sliding ring (35) is fixedly connected to one end of the third return spring (36). A fixed ring is fixedly provided on the other end of the third return spring (36). The fixed ring is fixedly disposed inside the first transmission pipe (33). Each of the sliding tubes (13) has a sealing groove at the end near the mounting turntable (16), and each sealing groove has a sealing ring.

2. The injection molding equipment for preventing flow channel blockage according to claim 1, characterized in that, The first filter (17) is cone-shaped, with the tip of the first filter (17) facing the output end of the injection molding machine body (11).

3. A method of using the injection molding equipment for preventing runner blockage as described in claim 2, characterized in that, Includes the following steps: Step 1: The first filter screen (17) filters impurities in the raw material. After the surface of the first filter screen (17) is partially blocked, the first filter screen (17) presses the control button (19) through the side of the dial. The motor (21) starts the first filter screen (17) to switch. The sliding ring (35) slides inside the first transmission pipe (33) so that the sliding ring (35) is disengaged from the fixed block (34). The air at the output end of the heating box (24) is output to the inside of the arc nozzle through the first transmission pipe (33). When the first filter screen (17) rotates to the position corresponding to the arc joint, the gas blows the residual raw material inside the first filter screen (17) into the guide pipe (37). Step 2: The clogged first filter screen (17) is rotated to the position corresponding to the cleaning nozzle (23). The output end of the air pump (25) delivers air into the heating box (24). The heating box (24) heats the air and sprays it evenly through the cleaning nozzle (23) to clean the first filter screen (17). When the air inside the output end of the collection pipe (26) flows, it drives the fixed shaft to rotate through the fan blade (28). When the fixed shaft rotates, it drives the scraper (29) to rotate. The scraper (29) cleans the impurities attached to one side of the second filter screen (27). Step 3: The hot air inside the collection tube (26) enters the second transmission tube (38). The second transmission tube (38) discharges the hot air through one end. The discharged hot air can heat the first filter (17) that is aligned with the input end of the air pump (25).

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