Pipeline pre-exhaust type precise injection mold based on environment-friendly plastic material processing

Abstract

The invention relates to a pipeline pre-exhaust type precision injection mold based on environment-friendly plastic material processing, which comprises a mold and a cleaning device, the mold is provided with exhaust holes, and the cleaning device is used for cleaning the exhaust holes of the mold. The cleaning device comprises a scraping piece, a movable piece, a driving device, a self-cleaning device, a rotating device, a button, an elastic assembly, a mounting frame and a rotating frame. The movable part can slide in or out of the exhaust hole along the axis of the exhaust hole; the multiple scraping pieces are evenly arranged around the movable piece around the axis of the movable piece. Two ends of the elastic component are respectively connected with the scraping piece and the movable piece; the mounting frame is arranged on one side of the mold; the rotating frame is rotationally arranged on the mounting frame along the axis of the exhaust hole; the movable part penetrates through the rotating frame and is in sliding fit with the rotating frame along the axis direction of the exhaust hole; the driving device is arranged on the rotating frame; the self-cleaning device is arranged on the rotating frame; the rotating device is arranged on the mounting frame; the button is fixedly arranged on the side, close to the exhaust hole, of the mounting frame.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing. Background Art

[0002] Injection molding is a method of producing industrial products. It is a method of using plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting materials. Existing injection molding equipment usually uses an injection molding machine and a mold to perform injection molding. In this way, one injection molding equipment can only inject plastic products with the corresponding mold shape. When different plastic products need to be injection molded, different molds need to be replaced. However, in existing injection molding equipment, when liquid is injected into the injection pipe, air will remain in the injection pipe, resulting in poor quality of the molded product.

[0003] Chinese patent CN112848095B discloses an injection mold based on environmentally friendly plastic processing, including an upper mold, a lower mold arranged under the upper mold, a demolding column arranged between the upper mold and the lower mold, a fixed seat arranged on the upper mold, an upper mold seat sleeved outside the fixed seat, a detachable lower mold seat arranged on the lower mold, an injection channel for connecting the upper mold seat and the fixed seat, and an injection pipeline arranged in the injection channel; an exhaust device is provided in the injection channel, and the exhaust device includes an annular groove opened on the circumference of the injection channel, a first limiting groove opened above the annular groove, a second limiting groove opened below the annular groove, a first plate body arranged in the first limiting groove, a second plate body arranged in the second limiting groove, and a second connecting rod for connecting the first plate body and the second plate body; a button in contact with the first plate body is provided in the first limiting groove, an exhaust hole is opened on the circumference of the injection pipeline, and a blocking cover is provided at the bottom of the injection pipeline, and the blocking cover is electrically connected to the button.

[0004] In the above scheme, during the exhaust process of the gas in the injection molding machine, the molten material being injected is easily flowed into the exhaust hole. Although the amount of material flowing into the exhaust hole is not large, the temperature at the exhaust hole is low, and the material will quickly condense on the side of the exhaust hole close to the injection cavity, which will cause the exhaust hole to be blocked. Summary of the invention

[0005] In order to solve the problems of the prior art, the present invention provides a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing, which includes a mold and a cleaning device, wherein the cleaning device is placed on one side of the mold, and an exhaust hole is arranged on the mold, and the cleaning device is used to clean the exhaust hole of the mold on one side close to the injection cavity, and the cleaning device includes a scraper, a movable part, a driving device, a self-cleaning device, a rotating device, a button, an elastic component, a mounting frame and a rotating frame; the mold is provided with an exhaust hole, and the movable part is a rotating body structure, and the movable part can slide into or out of the exhaust hole along the axis of the exhaust hole; a plurality of scrapers are provided, and the scrapers are evenly arranged around the movable part around the axis of the movable part, and the end of the scraper close to the movable part is hinged to the movable part, and the angle between the scraper and the movable part is an acute angle, and a cutter head is provided on the scraper, and the cutter head is located at one end of the scraper close to the side wall of the exhaust hole, and the cutter head of the scraper is in close contact with the side wall of the exhaust hole; the cutter head is a wedge shaped structure, thereby ensuring that when the movable part enters the exhaust hole opened on the mold, the cutter head will not clean the side wall of the exhaust hole; the two ends of the elastic component are respectively connected to the scraper and the movable part, and the elastic component provides support for the scraper; the mounting frame is arranged on one side of the mold; the rotating frame is rotatably arranged on the mounting frame along the axis of the exhaust hole, and the movable part passes through the rotating frame and slides with the rotating frame along the axis direction of the exhaust hole; the driving device is arranged on the rotating frame, and the driving device is used to drive the movable part to slide; the self-cleaning device is arranged on the rotating frame, and the self-cleaning device can clean the scraper; the rotating device is arranged on the mounting frame, and the rotating device is used to drive the rotating frame to rotate; the button is fixedly arranged on one side of the mounting frame close to the exhaust hole, and the diameter of the end of the movable part close to the exhaust hole is larger than the end of the movable part away from the exhaust hole. When the movable part slides out of the exhaust hole, the button can be triggered, and a controller is arranged on one side of the button, and the button controls the operation of the rotating device and the driving device respectively through the controller.

[0006] That is, after the mold has been used for a period of time, it is necessary to clean the side of the exhaust hole close to the injection molding cavity. The driving device drives the movable part to slide in along the axis of the exhaust hole. When the scraper has not entered the exhaust hole, the scraper is in an open state. A knife head is provided on the scraper. Since the knife head of the scraper is located at one end of the scraper close to the side wall of the exhaust hole, the straight-line distance between the outermost end of the knife head of the opened scraper and the axis of the movable part is the same as the radius of the exhaust hole. Since the scraper is connected to the elastic component, when the scraper enters the exhaust hole and contacts the injection molding material condensed on the side wall of the exhaust hole, it will rotate around the hinge between the scraper and the movable part. The knife head is a wedge-shaped structure, which ensures that the movable part will not clean the side wall of the exhaust hole when entering the exhaust hole opened in the mold. When the scraper is completely pushed out by the driving device, the scraper is elastically pushed out. The self-cleaning device arranged on the rotating frame can remove the injection molding material stuck on the scraping member, thereby realizing automatic cleaning of the exhaust hole and preventing the injection molding material remaining in the exhaust hole from falling into the injection molding cavity.

[0007] Preferably, the elastic component includes a connecting rod, a slide groove, a slider and a spring; the slide groove is opened on the side wall of the movable part along the axial direction of the movable part; the slider is slidably arranged in the slide groove along the length direction of the slide groove, and there is a gap between the slider and the end of the slide groove; the two ends of the connecting rod are respectively hinged to the scraper and the slider; the spring is arranged in the gap along the length direction of the slide groove, and the two ends of the spring are respectively fixedly connected to the slider and the end of the slide groove.

[0008] Preferably, the self-cleaning device includes a cleaning piece, a first rotating drive and a transmission device; there are multiple cleaning pieces and transmission devices, and they are arranged in one-to-one correspondence. At the same time, the cleaning pieces and transmission devices are also arranged in one-to-one correspondence with the scraping pieces. The cleaning piece is rotatably arranged on a rotating frame, and the axis of the cleaning piece is perpendicular to the radial direction of the exhaust hole; the first rotating drive is arranged on the rotating frame; the transmission device is arranged between the first rotating drive and the cleaning piece, and is driven by the first rotating drive, so that all the transmission devices respectively drive the corresponding cleaning pieces to rotate.

[0009] Preferably, the rotating device includes a second rotary drive, a second gear and a second gear ring; the second rotary drive is fixedly arranged on the mounting frame; the second gear is fixedly arranged on the output end of the second rotary drive; the second gear ring is fixedly arranged on the rotating frame along the axis of the exhaust hole, and the second gear and the second gear ring are meshed with each other.

[0010] Preferably, the driving device includes a third rotary driver, a turntable, an articulated column, a push rod and an articulated seat; the third rotary driver is arranged on a rotating frame; the turntable is fixedly arranged on the output end of the third rotary driver, and the axis of the turntable is perpendicular to the straight line of the exhaust hole; the articulated column is fixedly arranged at a non-center position of the turntable; the articulated seat is fixedly arranged at the end of the movable part away from the exhaust hole; and the two ends of the push rod are respectively hinged to the articulated column and the articulated seat.

[0011] Preferably, the transmission device includes a first gear ring, a first gear, a first bevel gear, a second bevel gear, a first synchronous assembly and a second synchronous assembly; the first gear ring is arranged on a rotating frame along the axis of the movable part; the first gears in the multiple transmission devices are evenly arranged around the axis of the first gear ring, and are all meshed with the first gear ring, and the first rotation driver is fixedly connected to one of the first gears and can drive the first gear to rotate; the first bevel gear is rotatably arranged on one side of the first gear along the axis of the exhaust hole; the two ends of the first synchronous assembly are respectively connected to the first gear and the first bevel gear, and the first gear drives the first bevel gear to rotate through the first synchronous assembly; the second bevel gear is rotatably arranged on one side of the first bevel gear, and the first bevel gear and the second bevel gear are meshed with each other; the two ends of the second synchronous assembly are respectively connected to the second bevel gear and the cleaning piece, and the second bevel gear drives the cleaning piece to rotate through the second synchronous assembly.

[0012] Preferably, there is an angle α between two lines connecting the two sides of the contact end of the scraper with the exhaust hole side wall and the center of the exhaust hole axis respectively, and the angle of each rotation of the second gear ring is less than or equal to the angle α.

[0013] Preferably, the driving device also includes a guide assembly, which includes a guide frame and a guide block; the guide frame is fixedly arranged on the rotating frame along the axis of the exhaust hole; the guide block is fixedly arranged on the side wall of the movable part located on the side of the rotating frame away from the exhaust hole, and the guide block and the guide frame are slidably matched along the axis of the exhaust hole.

[0014] Preferably, the elastic component also includes a sealing cover; the sealing cover covers the upper part of the spring along the length direction of the slide groove, and the two ends of the sealing cover in the length direction are fixedly connected to the sliding block and the end of the slide groove respectively.

[0015] Preferably, the cleaning device further comprises a collecting box; the collecting box is arranged below the self-cleaning device, and the collecting box is used to collect the injection molding material cleaned by the self-cleaning device.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: a cleaning component is provided in the injection mold of the present invention, and the cleaning component is provided with a scraper, a movable part, a driving device, a self-cleaning device, a rotating device, a button, an elastic component, a mounting frame and a rotating frame. After the mold has been used for a period of time, it is necessary to clean the side of the exhaust hole close to the injection cavity. The driving device drives the movable part to slide along the axis of the exhaust hole. When the scraper does not enter the exhaust hole, the scraper is in an open state. Since a knife head is provided on the scraper, and the knife head is located at one end of the scraper close to the side wall of the exhaust hole, the straight-line distance from the outermost end of the knife head of the opened scraper to the axis of the movable part is the same as the radius of the exhaust hole. Since the scraper is connected to the elastic component, when the scraper enters the exhaust hole and contacts the injection molding material condensed on the side wall of the exhaust hole, it will rotate around the hinge between the scraper and the movable part. Since the knife head is a wedge-shaped structure, it is ensured that the movable part enters the mold The self-cleaning device arranged on the rotating frame can remove the injection molding material stuck on the scraper, so that the automatic cleaning of the exhaust hole can be realized without causing the injection molding material remaining in the exhaust hole to fall into the injection molding cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a pipe pre-exhaust precision injection mold based on environmentally friendly plastic material processing when it is set on the mold Figure 1 ; Figure 2 A three-dimensional diagram of a pipe pre-exhaust precision injection mold based on environmentally friendly plastic material processing when it is set on the mold Figure 2 ; Figure 3 It is a side view of a pipe pre-exhaust precision injection mold based on environmentally friendly plastic material processing when it is set on the mold; Figure 4 It is a three-dimensional schematic diagram of a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing; Figure 5 It is a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing. Figure 4 A local enlarged schematic diagram of the middle A; Figure 6 It is a three-dimensional schematic diagram of a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing, after removing the rotating seat and the mounting seat; Figure 7 It is a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing. Figure 6 A partial enlarged schematic diagram of point B in the middle; Figure 8 It is a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing. Figure 6 A partial enlarged schematic diagram of point C in the middle; Fig. 9 It is a three-dimensional schematic diagram of a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing, after removing the guide frame, rotating seat and mounting seat; Fig.10 It is a pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing. Fig. 9 A partial enlarged schematic diagram of point D in the middle.

[0018] The numbers in the figure are: 1-mold; 11-exhaust hole; 2-cleaning device; 21-scraping member; 22-movable member; 23-driving device; 231-third rotary driver; 232-turntable; 2321-hinged column; 233-pushing rod; 234-hinged seat; 235-guide assembly; 2351-guide frame; 2352-guide block; 24-self-cleaning device; 241-cleaning member; 242-first rotary driver; 243-transmission device; 2431-first gear ring; 2432-first gear; 2433-first bevel gear; 2434-second bevel gear; 2435-first synchronization assembly; 2436-second synchronization assembly; 25-rotation device; 251-second rotation drive; 252-second gear; 253-second gear ring; 26-button; 27-elastic assembly; 271-connecting rod; 272-slide; 273-slider; 274-spring; 275-sealing cover; 28-mounting frame; 281-rotating frame; 29-collection box. DETAILED DESCRIPTION

[0019] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Reference Figure 1-Figure 4: A pipeline pre-exhaust precision injection mold based on environmentally friendly plastic material processing, including a mold 1 and a cleaning device 2, the cleaning device 2 is placed on one side of the mold 1, the mold 1 is provided with an exhaust hole 11, the cleaning device 2 is used to clean the exhaust hole 11 of the mold 1 on the side close to the injection cavity; the cleaning device 2 includes a scraper 21, a movable part 22, a driving device 23, a self-cleaning device 24, a rotating device 25, a button 26, an elastic component 27, a mounting frame 28 and a rotating frame 281; the mold 1 is provided with an exhaust hole 11, the movable part 22 is a rotating body structure, The movable member 22 can slide into or out of the exhaust hole 11 along the axis of the exhaust hole 11; a plurality of scraping members 21 are provided, and the scraping members 21 are evenly arranged around the movable member 22 around the axis of the movable member 22, and the end of the scraping member 21 close to the movable member 22 is hinged to the movable member 22, and the angle between the scraping member 21 and the movable member 22 is an acute angle, and a cutter head is provided on the scraping member 21, and the cutter head is located at the end of the scraping member 21 close to the side wall of the exhaust hole 11, and the cutter head of the scraping member 21 is in close contact with the side wall of the exhaust hole 11; the cutter head is a wedge-shaped structure, thereby ensuring that the movable member 22 enters the mold 1 When the exhaust hole 11 is opened, the cutter head will not clean the side wall of the exhaust hole 11; the two ends of the elastic component 27 are respectively connected to the scraper 21 and the movable part 22, and the elastic component 27 provides support for the scraper 21; the mounting frame 28 is arranged on one side of the mold 1; the rotating frame 281 is rotatably arranged on the mounting frame 28 along the axis of the exhaust hole 11, and the movable part 22 passes through the rotating frame 281 and slides with the rotating frame 281 along the axis direction of the exhaust hole 11; the driving device 23 is arranged on the rotating frame 281, and the driving device 23 is used to drive the movable part 22 to slide; the self-cleaning device 2 4 is arranged on the rotating frame 281, and the self-cleaning device 24 can clean the scraping member 21; the rotating device 25 is arranged on the mounting frame 28, and the rotating device 25 is used to drive the rotating frame 281 to rotate; the button 26 is fixedly arranged on the side of the mounting frame 28 close to the exhaust hole 11, and the diameter of the end of the movable member 22 close to the exhaust hole 11 is larger than the end of the movable member 22 away from the exhaust hole 11, and the movable member 22 can trigger the button 26 when it slides out of the exhaust hole 11. A controller is arranged on one side of the button 26, and the button 26 controls the operation of the rotating device 25 and the driving device 23 respectively through the controller.

[0021] During injection molding, the air in the injection molding cavity is discharged from the exhaust hole 11. After a period of use, it is necessary to clean the exhaust hole 11 near the injection molding cavity. The driving device 23 drives the movable member 22 to slide along the axis of the exhaust hole 11. When the scraper 21 does not enter the exhaust hole 11, the scraper 21 is in an open state. Since a cutter head is provided on the scraper 21, and the cutter head is located at one end of the scraper 21 near the side wall of the exhaust hole 11, the straight-line distance between the outermost end of the cutter head of the scraper 21 and the axis of the movable member 22 after opening is the same as the radius of the exhaust hole 11, and the scraper 21 and the side wall of the scraper 21 are close to each other. The elastic component 27 is connected to the vent hole 11, so the end of the cutter head close to the side wall of the vent hole 11 is always in contact with the side wall of the vent hole 11 under the action of the elastic component 27. Since the cutter head is a wedge-shaped structure, it is ensured that the movable part will not clean the side wall of the vent hole when entering the vent hole opened on the mold, that is, when the scraper 21 slides into the vent hole 11 along with the driving device 23, it will slide along the injection molding material when encountering residual injection molding material, and when it does not encounter residual injection molding material, the scraper 21 will contact the inner wall of the vent hole 11, so that the scraper 21 will contact the condensed injection molding material on the side wall of the vent hole 11 when entering the vent hole 11. When the scraper 21 contacts the injection molding material, it will rotate around the hinge of the scraper 21 and the movable member 22. When the scraper 21 is completely pushed out by the driving device 23, the scraper 21 is restored to the original open state again under the action of the elastic component 27. Then the driving device 23 drives the movable member 22 to retract. The scraper provided on the movable member 22 will contact the side wall of the exhaust hole 11 and scrape off the injection molding material on the side wall of the exhaust hole 11. When the movable member 22 is completely retracted, the movable member 22 will trigger the button 26 on the rotating frame 281, and the button 26 controls the driving device 23 to stop rotating through the controller. The button 26 controls the rotating device 25 to start through the controller, and the rotating device 25 drives the rotating frame 281 to rotate a certain angle. After the rotating device 25 drives the rotating frame 281 to rotate, the driving device 23 drives the movable member 22 and the scraping member 21 to enter the exhaust hole 11 again and scrape the inner wall of the exhaust hole 11 for the second time. The self-cleaning device 24 arranged on the rotating frame 281 can remove the injection molding material adhering to the scraping member, so that the exhaust hole 11 can be automatically cleaned without causing the injection molding material remaining in the exhaust hole 11 to fall into the injection molding cavity.

[0022] Reference Figure 4 and Figure 5: The elastic component 27 includes a connecting rod 271, a slide groove 272, a slider 273 and a spring 274; the slide groove 272 is opened on the side wall of the movable part 22 along the axial direction of the movable part 22; the slider 273 is slidably arranged in the slide groove 272 along the length direction of the slide groove 272, and there is a gap between the slider 273 and the end of the slide groove 272; the two ends of the connecting rod 271 are respectively hinged to the scraper 21 and the slider 273; the spring 274 is arranged in the gap along the length direction of the slide groove 272, and the two ends of the spring 274 are respectively fixedly connected to the slider 273 and the end of the slide groove 272.

[0023] When the driving device 23 drives the movable part 22 to slide into the exhaust hole 11, when the scraper 21 contacts the injection molding material condensed on the side wall of the exhaust hole 11, the condensed injection molding material will push the scraper 21, and the scraper 21 drives the slider 273 to slide through the connecting rod 271, and the slider 273 slides along the length direction of the slide groove 272. After sliding, the slider 273 will squeeze the spring 274, and the squeezed spring 274 provides elastic force to the slider 273, thereby ensuring that the scraper 21 can automatically open and reset when passing through the exhaust hole 11, and then the driving device 23 drives the scraper 21 to retract, and then the scraper 21 scrapes off the injection molding material on the side wall of the exhaust hole 11.

[0024] Reference Figure 1 , Figure 6 and Fig.10 : The self-cleaning device 24 includes a cleaning member 241, a first rotating driver 242 and a transmission device 243; there are multiple cleaning members 241 and transmission devices 243, and they are arranged one by one. At the same time, the cleaning members 241 and the transmission devices 243 are also arranged one by one with the scraping member 21. The cleaning member 241 is rotatably arranged on the rotating frame 281, and the axis of the cleaning member 241 is perpendicular to the radial direction of the exhaust hole 11; the first rotating driver 242 is arranged on the rotating frame 281; one of the transmission devices 243 is arranged between the first rotating driver 242 and the cleaning member 241, and is driven by the first rotating driver 242, so that all the transmission devices 243 respectively drive the corresponding cleaning members 241 to rotate.

[0025] The first rotary driver 242 is preferably a servo motor, which drives the cleaning member 241 to rotate through the transmission device 243. When the movable member 22 is fully retracted, the scraping member 21 arranged on the movable member 22 will contact the cleaning member 241. The rotating cleaning member 241 can clean up the injection molding material adhering to the scraping member 21. Since the cleaning member 241 corresponds to the scraping member 21 one by one, each scraping member 21 can be cleaned by the corresponding cleaning member 241, which ensures that the scraping member 21 can better scrape off the injection molding material on the side wall of the exhaust hole 11 when it enters the exhaust hole 11 for the second time.

[0026] Reference Figure 1 and Figure 2 The rotating device 25 includes a second rotating driver 251, a second gear 252 and a second gear ring 253; the second rotating driver 251 is fixedly arranged on the mounting frame 28; the second gear 252 is fixedly arranged on the output end of the second rotating driver 251; the second gear ring 253 is fixedly arranged on the rotating frame 281 along the axis of the exhaust hole 11, and the second gear 252 and the second gear ring 253 are meshed with each other.

[0027] The second rotary driver 251 is preferably a servo motor. When the movable part 22 is retracted under the drive of the driving device 23 and triggers the button 26 arranged on the rotating frame 281, the button 26 controls the second rotary driver 251 to rotate through the controller. The second rotary driver 251 drives the second gear 252 to rotate, and then the second gear ring 253 meshing with the second gear 252 rotates, so that the second gear ring 253 drives the rotating frame 281 to rotate, and the movable part 22 located on the rotating frame 281 rotates synchronously with the rotating frame 281, so as to ensure that the injection molding material on the side wall of the exhaust hole 11 is completely cleaned up.

[0028] Reference Figure 1 , Figure 2 and Fig. 9 The driving device 23 includes a third rotary driver 231, a turntable 232, a hinged column 2321, a push rod 233 and a hinged seat 234; the third rotary driver 231 is arranged on the rotating frame 281; the turntable 232 is fixedly arranged on the output end of the third rotary driver 231, and the axis of the turntable 232 is perpendicular to the straight line of the exhaust hole 11; the hinged column 2321 is fixedly arranged at a non-center position of the turntable 232; the hinged seat 234 is fixedly arranged at the end of the movable part 22 away from the exhaust hole 11; the two ends of the push rod 233 are respectively hinged to the hinged column 2321 and the hinged seat 234.

[0029] The third rotation driver 231 is preferably a servo motor. After the third rotation driver 231 is started, it drives the turntable 232 to rotate, and the turntable 232 drives the hinge column 2321 to rotate around the axis of the turntable 232, so that the hinge column 2321 can push the hinge seat 234 through the push rod 233, and the hinge seat 234 is fixedly connected to the movable part 22. In the horizontal direction, when the hinge column 2321 arranged on the turntable 232 moves toward the exhaust hole 11, the movable part 22 will slide toward the exhaust hole 11, so that the movable part 22 can slide toward the exhaust hole 11 along the axis of the exhaust hole 11, otherwise, the movable part 22 will slide out of the exhaust hole 11.

[0030] Reference Figure 6 and Figure 8The transmission device 243 includes a first gear ring 2431, a first gear 2432, a first bevel gear 2433, a second bevel gear 2434, a first synchronization component 2435 and a second synchronization component 2436; the first gear ring 2431 is arranged on the rotating frame 281 along the axis of the movable member 22; the first gears 2432 in the plurality of transmission devices 243 are evenly arranged around the axis of the first gear ring 2431, and are all meshed with the first gear ring 2431, the first rotation driver 242 is fixedly connected to one of the first gears 2432 and can drive the first gear 2432 to rotate; the first bevel gear 2433 is arranged along the exhaust hole 11 The axis of rotation is set on one side of the first gear 2432; the two ends of the first synchronous component 2435 are respectively connected to the first gear 2432 and the first bevel gear 2433, and the first gear 2432 drives the first bevel gear 2433 to rotate through the first synchronous component 2435; the second bevel gear 2434 is rotatably set on one side of the first bevel gear 2433, and the first bevel gear 2433 and the second bevel gear 2434 are engaged with each other; the two ends of the second synchronous component 2436 are respectively connected to the second bevel gear 2434 and the cleaning piece 241, and the second bevel gear 2434 drives the cleaning piece 241 to rotate through the second synchronous component 2436.

[0031] When the first rotary driver 242 drives the first gear 2432 connected thereto to rotate, the first gear ring 2431 will rotate, and the remaining first gears 2432 meshing with the first gear ring 2431 will rotate. The first synchronous component 2435 is composed of a first synchronous wheel and a first synchronous belt. Under the transmission of the first synchronous component 2435, the first bevel gear 2433 will rotate, and the second bevel gear 2434 meshing with the first bevel gear 2433 will also rotate. The second bevel gear 2434 drives the cleaning member 241 to rotate through the second synchronous component 2436, so that the cleaning member 241 can clean the scraping member 21. The second synchronous component 2436 is composed of a second synchronous wheel and a second synchronous belt.

[0032] Reference Figure 3 There is an angle α between two connecting lines connecting the two sides of the contact end of the scraper 21 with the side wall of the exhaust hole 11 and the center of the axis of the exhaust hole 11, and the angle of each rotation of the second gear ring 253 is less than or equal to the angle α.

[0033] Since there is an angle α between the two connecting lines connected to the center of the axis of the exhaust hole 11 on both sides of the contact end of the scraper 21 and the side wall of the exhaust hole 11, it is necessary to ensure that the angle of each rotation of the second toothed ring 253 is less than or equal to the angle α. This is because the second toothed ring 253 is fixedly connected to the rotating frame 281. When the second toothed ring 253 rotates, it can drive the rotating frame 281 to rotate synchronously, and the movable member 22 and the rotating frame 281 also rotate synchronously. Only when the rotation angle of the second toothed ring 253 is less than the angle α can it be ensured that the scraper 21 can completely scrape the side wall of the exhaust hole 11.

[0034] Reference Figure 6 and Figure 7 The driving device 23 also includes a guide assembly 235, which includes a guide frame 2351 and a guide block 2352; the guide frame 2351 is fixedly arranged on the rotating frame 281 along the axis of the exhaust hole 11; the guide block 2352 is fixedly arranged on the side wall of the movable part 22 away from the exhaust hole 11, and the guide block 2352 and the guide frame 2351 are slidably matched along the axis of the exhaust hole 11.

[0035] The guide block 2352 is slidably matched with the guide frame 2351, and the guide block 2352 is fixedly connected to the movable part 22, so that the movable part 22 does not rotate along its own axis, but rotates synchronously with the rotating frame 281, ensuring that the scraping member 21 set on the movable part 22 can always correspond one-to-one with the self-cleaning device 24.

[0036] Reference Figure 5 The elastic component 27 further includes a sealing cover 275; the sealing cover 275 covers the upper portion of the spring 274 along the length direction of the slide groove 272, and the ends of the sealing cover 275 in the length direction are respectively fixedly connected to the sliding block and the end of the slide groove 272.

[0037] The sealing cover 275 is arranged on the upper part of the spring 274 to prevent the scraped injection material from falling on the spring 274 when the scraper 21 scrapes the injection material on the side wall of the exhaust hole 11, thereby hindering the compression of the spring 274.

[0038] Reference Figure 1-Figure 3 : The cleaning device 2 also includes a collecting box 29; the collecting box 29 is disposed below the self-cleaning device 24, and the collecting box 29 is used to collect the injection molding material cleaned up by the self-cleaning device 24.

[0039] A collection box 29 is provided below the self-cleaning device 24 to ensure that when the self-cleaning device 24 cleans the scraper 21, the cleaned injection molding material can be reasonably collected and will not be scattered everywhere.

[0040] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing, comprising a mold (1) and a cleaning device (2), wherein the cleaning device (2) is placed on one side of the mold (1), and the mold (1) is provided with an exhaust hole (11), and the cleaning device (2) is used to clean the exhaust hole (11) of the mold (1) on the side close to the injection cavity; characterized in that: The cleaning device (2) comprises a scraping member (21), a movable member (22), a driving device (23), a self-cleaning device (24), a rotating device (25), a button (26), an elastic component (27), a mounting frame (28) and a rotating frame (281); the movable member (22) is a rotating body structure, and the movable member (22) can slide into or out of the exhaust hole (11) along the axis of the exhaust hole (11); a plurality of scraping members (21) are provided, and the scraping members (21) are evenly arranged around the movable member (22) around the axis of the movable member (22), and the scraping members (21) are close to the movable member (22). One end is hinged to the movable member (22); the angle between the scraping member (21) and the movable member (22) is an acute angle; a cutter head is provided on the scraping member (21); the cutter head is located at one end of the scraping member (21) close to the side wall of the exhaust hole (11); the cutter head of the scraping member (21) is in close contact with the side wall of the exhaust hole (11); the cutter head is a wedge-shaped structure, thereby ensuring that when the movable member (22) enters the exhaust hole (11) provided on the mold (1), the cutter head will not clean the side wall of the exhaust hole (11); the two ends of the elastic component (27) are respectively connected to the scraping member (21) and the movable member (22); the elastic component (27) provides support for the scraping member (21); the mounting frame (28) is arranged on one side of the mold (1); the rotating frame (281) is rotatably arranged on the mounting frame (28) along the axis of the exhaust hole (11); the movable member (22) passes through the rotating frame (281) and slides with the rotating frame (281) along the axis of the exhaust hole (11); the driving device (23) is arranged on the rotating frame (281), and the driving device (23) is used to drive the movable member (22) to slide; the self-cleaning device (24) is arranged on the rotating frame (281), and the self-cleaning device (24) can clean the scraping member (21) cleaning; a rotating device (25) is arranged on the mounting frame (28), and the rotating device (25) is used to drive the rotating frame (281) to rotate; a button (26) is fixedly arranged on a side of the mounting frame (28) close to the exhaust hole (11), and the diameter of the end of the movable member (22) close to the exhaust hole (11) is larger than the diameter of the end of the movable member (22) away from the exhaust hole (11), and the movable member (22) can trigger the button (26) when it slides out of the exhaust hole (11), and a controller is arranged on one side of the button (26), and the button (26) controls the operation of the rotating device (25) and the driving device (23) respectively through the controller.

2. According to claim 1, a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing is characterized in that: The elastic component (27) comprises a connecting rod (271), a slide groove (272), a slider (273) and a spring (274); the slide groove (272) is provided on a side wall of the movable member (22) along the axial direction of the movable member (22); the slider (273) is slidably arranged in the slide groove (272) along the length direction of the slide groove (272), and a gap exists between the slider (273) and the end of the slide groove (272); the two ends of the connecting rod (271) are respectively hinged to the scraping member (21) and the slider (273); the spring (274) is arranged in the gap along the length direction of the slide groove (272), and the two ends of the spring (274) are respectively fixedly connected to the slider (273) and the end of the slide groove (272).

3. According to claim 1, a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing is characterized in that: The self-cleaning device (24) comprises a cleaning member (241), a first rotating driver (242) and a transmission device (243); a plurality of cleaning members (241) and transmission devices (243) are provided and are arranged in one-to-one correspondence, and the cleaning members (241) and transmission devices (243) are also arranged in one-to-one correspondence with the scraping member (21); the cleaning member (241) is rotatably arranged on a rotating frame (281), and the axis of the cleaning member (241) is perpendicular to the radial direction of the exhaust hole (11); the first rotating driver (242) is arranged on the rotating frame (281); one of the transmission devices (243) is arranged between the first rotating driver (242) and the cleaning member (241), and is driven by the first rotating driver (242), thereby realizing that all the transmission devices (243) respectively drive the corresponding cleaning member (241) to rotate.

4. According to claim 1, a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing is characterized in that: The rotating device (25) comprises a second rotating driver (251), a second gear (252) and a second gear ring (253); the second rotating driver (251) is fixedly arranged on the mounting frame (28); the second gear (252) is fixedly arranged on the output end of the second rotating driver (251); the second gear ring (253) is fixedly arranged on the rotating frame (281) along the axis of the exhaust hole (11), and the second gear (252) and the second gear ring (253) are meshed with each other.

5. According to claim 1, a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing is characterized in that: The driving device (23) comprises a third rotary driver (231), a rotating disk (232), an articulated column (2321), a pushing rod (233) and an articulated seat (234); the third rotary driver (231) is arranged on a rotating frame (281); the rotating disk (232) is fixedly arranged on an output end of the third rotary driver (231), and an axis of the rotating disk (232) and a straight line of the exhaust hole (11) are perpendicular to each other; the articulated column (2321) is fixedly arranged at a non-center position of the rotating disk (232); the articulated seat (234) is fixedly arranged at an end of the movable member (22) away from the exhaust hole (11); and both ends of the pushing rod (233) are respectively articulated to the articulated column (2321) and the articulated seat (234).

6. According to claim 3, a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing is characterized in that: The transmission device (243) comprises a first gear ring (2431), a first gear (2432), a first bevel gear (2433), a second bevel gear (2434), a first synchronization component (2435) and a second synchronization component (2436); the first gear ring (2431) is arranged on a rotating frame (281) along the axis of the movable member (22); the first gears (2432) in the plurality of transmission devices (243) are evenly arranged around the axis of the first gear ring (2431) and are all meshed with the first gear (2432) and the first gear ring (2431); the first rotation driver (242) is fixedly connected to one of the first gears (2432) and can drive the first gear (2432) to rotate; the first bevel gear (2433) is arranged along the axis of the movable member (22); The axis of the exhaust hole (11) is rotatably arranged on one side of the first gear (2432); the two ends of the first synchronous component (2435) are respectively connected to the first gear (2432) and the first bevel gear (2433), and the first gear (2432) drives the first bevel gear (2433) to rotate through the first synchronous component (2435); the second bevel gear (2434) is rotatably arranged on one side of the first bevel gear (2433), and the first bevel gear (2433) and the second bevel gear (2434) are meshed with each other; the two ends of the second synchronous component (2436) are respectively connected to the second bevel gear (2434) and the cleaning member (241), and the second bevel gear (2434) drives the cleaning member (241) to rotate through the second synchronous component (2436).

7. According to claim 4, a pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing is characterized in that: An angle α is formed between two connecting lines connected to the center of the axis of the exhaust hole (11) on both sides of the contact end of the scraper (21) and the side wall of the exhaust hole (11), and each time the second gear ring (253) rotates, the angle is less than or equal to the angle α.

8. The pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing according to claim 5 is characterized in that: The driving device (23) further comprises a guide assembly (235), wherein the guide assembly (235) comprises a guide frame (2351) and a guide block (2352); the guide frame (2351) is fixedly arranged on the rotating frame (281) along the axis of the exhaust hole (11); the guide block (2352) is fixedly arranged on a side wall of the movable part (22) located on a side of the rotating frame (281) away from the exhaust hole (11), and the guide block (2352) and the guide frame (2351) are slidably matched along the axis of the exhaust hole (11).

9. The pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing according to claim 2 is characterized in that: The elastic component (27) further comprises a sealing cover (275); the sealing cover (275) covers the upper part of the spring (274) along the length direction of the slide groove (272), and the two ends of the sealing cover (275) in the length direction are respectively fixedly connected to the sliding block and the end of the slide groove (272).

10. The pipeline pre-exhaust type precision injection mold based on environmentally friendly plastic material processing according to claim 1 is characterized in that: It also includes a collection box (29); the collection box (29) is arranged below the self-cleaning device (24), and the collection box (29) is used to collect the injection molding material cleaned by the self-cleaning device (24).

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