A prototype model injection molding device

Abstract

This invention relates to the field of prototype model production technology, specifically to a prototype model injection molding device, including a frame, an upper mold and a lower mold for injection molding the prototype model, a flipping mechanism, and a spraying mechanism. The spraying mechanism includes a movable frame with a moving frame that can move along the length of the lower mold. The moving frame has a cleaning mechanism for cleaning the interior of the flipped lower mold and an infrared temperature and humidity detector for measuring the surface temperature and humidity of the lower mold. The cleaning mechanism, by moving along the length of the lower mold via the moving frame, can thoroughly remove dust, debris, and other impurities from inside the lower mold, preventing impurities from affecting the adhesion between the injection molding material and the mold. The infrared temperature and humidity detector measures the surface temperature and humidity of the lower mold in real time, ensuring that the loosening agent achieves the best spraying effect under different temperature and humidity conditions, thereby improving the product yield.

Description

Technical Field

[0001] This invention relates to the field of prototype model production technology, specifically to a prototype model injection molding device. Background Technology

[0002] In modern industrial manufacturing, prototype models serve as a crucial step in product design verification and functional testing, and their injection molding quality directly impacts the product development cycle and final performance.

[0003] Chinese Patent Publication No. CN117428990A discloses a prototype model injection mold, belonging to the field of prototype model production. It includes a frame and further comprises: a molding mechanism disposed on the top of the frame for injection molding the prototype model; a spraying mechanism disposed on the frame for extracting and spraying a loosening agent onto the molding mechanism; an adjusting mechanism located on the spraying mechanism for driving the spraying mechanism to move and spray the loosening agent onto different positions of the molding mechanism; and a swinging mechanism disposed on the adjusting mechanism. This invention, through the cooperation between the spraying mechanism and the adjusting mechanism, allows for the spraying of a loosening agent onto the inner wall of the lower mold before the molding mechanism injects the prototype model. The loosening agent reduces material adhesion, making it easier to flow and eliminating air bubbles, resulting in a smoother surface on the produced prototype model, reducing pitting, and improving the yield rate.

[0004] However, the aforementioned prototype injection molding devices have many shortcomings in the mold pretreatment stage. On the one hand, cleaning the mold surface mostly relies on manual operation or simple blowing equipment, which is difficult to completely remove dust, debris and other impurities attached to the mold surface. These residual impurities can cause defects such as bubbles and dents during injection molding, seriously affecting the molding quality of the prototype model. On the other hand, in terms of loosening agent spraying, fixed parameter spraying is mostly used, without considering the influence of environmental factors such as mold surface temperature and humidity on the spraying effect. Changes in mold surface temperature and humidity will change the physical properties and adhesion effect of the loosening agent. If targeted adjustments are not made, uneven distribution of the loosening agent is likely to occur, making it difficult to demold the product after injection molding, or even causing product damage. Therefore, there is an urgent need for a prototype injection molding device that can achieve efficient dust removal, precise spraying, and automatic adjustment according to environmental parameters. Summary of the Invention

[0005] To address the aforementioned issues, a prototype injection molding device is provided. The dust removal mechanism moves along the length of the lower mold via a movable frame, which can thoroughly remove dust, debris, and other impurities from inside the lower mold, preventing impurities from affecting the fit between the injection molding material and the mold. An infrared temperature and humidity detector measures the temperature and humidity of the lower mold surface in real time, ensuring that the loosening agent achieves the best spraying effect under different temperature and humidity conditions, thereby improving the product yield.

[0006] To address the problems of existing technologies, this invention provides a prototype model injection molding device, comprising a frame, on which an upper mold and a lower mold for injection molding a prototype model are mounted. The frame also includes a flipping mechanism for driving the lower mold to flip, and a spraying mechanism mounted on the frame for spraying a loosening agent into the interior of the flipped lower mold. The spraying mechanism includes a movable frame that can move directly below the lower mold, and a movable frame that can move along the length of the lower mold. The movable frame also includes a cleaning mechanism for cleaning the interior of the flipped lower mold, and an infrared temperature and humidity detector for measuring the surface temperature and humidity of the lower mold.

[0007] Preferably, the dust removal mechanism includes an industrial vacuum cleaner and a rotating shaft. The rotating shaft is horizontally rotatably mounted on a movable frame. A rotating mechanism for rotating the rotating shaft 180° is provided on one side of the movable frame. Connecting plates are symmetrically arranged at both ends of the rotating shaft. A cleaning roller is rotatably mounted between the two connecting plates. A cleaning brush is provided on the outside of the cleaning roller. A first rotary motor for driving the cleaning roller to rotate is provided on the outer wall of one of the two connecting plates. The cleaning roller has a hollow structure and multiple suction ports are provided on its outside. The industrial vacuum cleaner is mounted on the frame. A suction hose is rotatably connected to the end of the cleaning roller away from the first rotary motor. The end of the suction hose is connected to the working end of the industrial vacuum cleaner.

[0008] Preferably, the cleaning brush and the dust suction port are arranged in a spiral pattern on the surface of the cleaning roller.

[0009] Preferably, the rotating mechanism includes a first linear cylinder, a rack, and a gear. The gear is coaxially disposed at one end of the rotating shaft, the rack is horizontally disposed below the gear and meshes with the gear, a limiting block is provided at the bottom of the rack, and a limiting groove is provided on the movable frame for the limiting block to move. The first linear cylinder is disposed on the movable frame, and the output end of the first linear cylinder is connected to one end of the rack.

[0010] Preferably, the side of the movable frame away from the infrared temperature and humidity detector is provided with a connecting shaft that is flush with the cleaning roller shaft when it is flipped to the lowest position, and a cleaning plate extending radially along the outside of the connecting shaft is provided.

[0011] Preferably, both ends of the connecting shaft are rotatably mounted on the movable frame. One end of the cleaning roller shaft is coaxially provided with a main friction wheel, and one end of the connecting shaft is provided with a first auxiliary friction wheel. A second auxiliary friction wheel that can rub against the main friction wheel is provided beside the first auxiliary friction wheel. The second auxiliary friction wheel is rotatably mounted on the movable frame via a rotating shaft. The diameters of the first and second auxiliary friction wheels are smaller than the diameter of the main friction wheel.

[0012] Preferably, a magnet is provided on one side of the connecting plate, and an iron block corresponding to the magnet is provided on the movable frame. When the cleaning brush comes into contact with the cleaning plate, the magnet and the iron block are magnetically attracted to each other.

[0013] Preferably, a dust cover is fitted over the outside of the connecting shaft, and the two sides of the dust cover are mounted on a movable frame. The dust cover can cover the cleaning plate, and the dust cover has an opening at the part corresponding to the cleaning roller shaft. The dust cover is used to prevent dust generated during the cleaning process of the cleaning brush from splashing and spreading.

[0014] Preferably, the movable frame is provided with a linear slide arranged along the length direction of the lower mold, and the bottom of the movable frame is located at the working end of the linear slide. The linear slide is used to drive the movable frame to move linearly along the length direction of the lower mold.

[0015] Preferably, the spraying mechanism further includes an XY-axis electric slide and a loosening agent nozzle. The XY-axis electric slide is located on the top of the movable frame, and the loosening agent nozzle is located at the working end of the XY-axis electric slide. The XY-axis electric slide is used to drive the loosening agent nozzle to move in the XY direction.

[0016] Preferably, the bottom of the movable frame is symmetrically provided with sliders, the table surface of the frame is provided with a slide rail for the sliders to slide, one side of the table surface of the frame is provided with an extension plate, one end of the slide rail extends toward the extension plate, the top of the extension plate is provided with a second linear cylinder, and the output shaft of the second linear cylinder is connected to one side of the movable plate.

[0017] Preferably, the flipping mechanism includes two mounting plates and a flipping motor. The two mounting plates are mirror images of each other on both sides of the lower mold. The bottom of the mounting plates is fixedly connected to the table surface of the frame. The two sides of the lower mold are axially connected to the corresponding two mounting plates through flipping rods. The flipping motor is mounted on one of the two mounting plates, and the output shaft of the flipping motor is drivenly connected to one end of one of the two flipping rods.

[0018] The advantages of this invention compared to the prior art are:

[0019] 1. The dust removal mechanism moves along the length of the lower mold via a movable frame, which can thoroughly remove dust, debris and other impurities inside the lower mold, preventing impurities from affecting the fit between the injection molding material and the mold, reducing surface defects on the prototype model, and improving the appearance quality and precision of the product.

[0020] 2. The infrared temperature and humidity detector measures the temperature and humidity of the mold surface in real time and feeds the data back to the control system to adjust the spraying parameters of the spraying mechanism. This ensures that the loosening agent can achieve the best spraying effect under different temperature and humidity conditions. The appropriate amount and distribution of loosening agent can effectively reduce the adhesion between the injection molding material and the mold surface, promote the flow of the injection molding material, remove air bubbles, reduce the probability of defects such as pits on the surface of the prototype model, and improve the product yield. Attached Figure Description

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a prototype injection molding device. Figure 1 .

[0022] Figure 2 A schematic diagram of the three-dimensional structure of a prototype injection molding device. Figure 2 .

[0023] Figure 3 This is a diagram showing the working state of the dust removal mechanism in a prototype injection molding device.

[0024] Figure 4 This is a partial three-dimensional structural diagram of a prototype injection molding device.

[0025] Figure 5 A partial three-dimensional structural diagram of the dust removal mechanism of a prototype injection molding device. Figure 1 .

[0026] Figure 6 This is a partial front view of the cleaning roller of a prototype injection molding device.

[0027] Figure 7 yes Figure 6 Sectional view along the middle AA.

[0028] Figure 8 yes Figure 7 Enlarged view of section B in the middle.

[0029] Figure 9 This is a partial three-dimensional structural diagram of the rotating mechanism of a prototype injection molding device.

[0030] Figure 10 A partial three-dimensional structural diagram of the dust removal mechanism of a prototype injection molding device. Figure 2 .

[0031] Figure 11 This is a partial top view of the dust removal mechanism of a prototype injection molding device.

[0032] Figure 12 yes Figure 11 Sectional view at the center CC.

[0033] Figure 13 yes Figure 11 Sectional view at the middle DD.

[0034] Figure 14 This is a partial three-dimensional structural diagram of the spray mechanism of a prototype injection molding device.

[0035] The following are the labels in the diagram: 1. Frame; 11. Extension plate; 12. Second linear cylinder; 2. Upper mold; 3. Lower mold; 4. Tilting mechanism; 41. Mounting plate; 42. Tilting motor; 5. Spraying mechanism; 51. Movable frame; 511. Linear slide; 512. Slider; 513. Slide rail; 52. XY axis electric slide; 53. Loosening agent nozzle; 6. Moving frame; 61. Infrared temperature and humidity detector; 62. Connecting shaft; 621. Cleaning plate; 63. Main friction wheel; 64. First auxiliary friction wheel; 66. Second friction wheel; 65. Dust cover; 7. Dust removal mechanism; 71. Industrial vacuum cleaner; 72. Tilting shaft; 73. Rotating mechanism; 731. First linear cylinder; 732. Rack; 7321. Limiting block; 7322. Limiting groove; 733. Gear; 74. Connecting plate; 741. Magnet; 742. Iron block; 75. Cleaning roller; 751. Cleaning brush; 752. Dust suction port; 753. Dust suction hose; 76. First rotary motor; 77. U-shaped plate; 771. Bearing. Detailed Implementation

[0036] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0037] Reference Figures 1 to 3 As shown: A prototype model injection molding device includes a frame 1, on which an upper mold 2 and a lower mold 3 for injection molding a prototype model are provided. The frame 1 is also provided with a flipping mechanism 4 for driving the lower mold 3 to flip, and a spraying mechanism 5 provided on the frame 1 for spraying a loosening agent into the interior of the flipped lower mold 3. The spraying mechanism 5 includes a movable frame 51 that can move directly below the lower mold 3. The movable frame 51 is provided with a movable frame 6 that can move along the length direction of the lower mold 3. The movable frame 6 is provided with a cleaning mechanism 7 for cleaning the interior of the flipped lower mold 3. The movable frame 6 is also provided with an infrared temperature and humidity detector 61 for measuring the surface temperature and humidity of the lower mold 3.

[0038] Before the prototype model is injection molded, in order to facilitate the cleaning of dust and spraying of loosening agent on the lower mold 3, the flipping mechanism 4 is activated to flip the lower mold 3 180° so that the inside of the lower mold 3 faces downward.

[0039] After the flipping is completed, the movable frame 51, along with the dust removal mechanism 7, the infrared temperature and humidity detector 61, and the spraying mechanism 5, approaches the lower mold 3. When it moves to the appropriate position, it stops to ensure that the dust removal mechanism 7, the infrared temperature and humidity detector 61, and the spraying mechanism 5 can maintain an appropriate working distance from the lower mold 3, thus preparing for subsequent dust removal, inspection, and loosening agent spraying operations.

[0040] After the movable frame 51 is in place, the dust removal mechanism 7 starts to work and moves along the length of the lower mold 3 via the movable frame 6 to ensure that all areas inside the lower mold 3 can be cleaned, so as to remove dust, debris and other impurities inside the lower mold 3, and ensure the accuracy of the measurement by the infrared temperature and humidity detector 61 and the spraying effect of the spraying mechanism 5.

[0041] After the dust removal is completed, the infrared temperature and humidity detector 61 starts working. The infrared temperature and humidity detector 61 uses infrared technology to perform non-contact measurement on the surface of the lower mold 3. The infrared temperature and humidity detector 61 emits an infrared beam and analyzes and calculates the temperature and humidity data of the surface of the lower mold 3 based on the characteristics of the reflected light. A control system is set on the frame 1. The data measured by the infrared temperature and humidity detector 61 is transmitted to the control system in real time. The control system adjusts the spraying parameters of the spraying mechanism 5 based on the transmitted temperature and humidity data and the preset program and algorithm to ensure that the loosening agent can achieve the best spraying effect under different temperature and humidity conditions.

[0042] The spraying mechanism 5 sprays loosening agent into the mold 3. The loosening agent can reduce the adhesion between the injection molding material and the mold surface, making the injection molding material flow more easily during the injection process. At the same time, it helps to remove air bubbles, thereby reducing the generation of pits on the surface of the prototype model and improving the surface quality and yield of the prototype model.

[0043] After cleaning, temperature and humidity detection and loosening agent spraying are completed, the flipping mechanism 4 is started again to flip the lower mold 3 back to the initial position, so that the lower mold 3 is restored to a state suitable for injection molding. At this time, the lower mold 3 has completed the pretreatment, and the upper mold 2 and the lower mold 3 are ready to close the mold. After the injection material is injected, the hand model can be injection molded.

[0044] Reference Figures 3 to 8As shown: The dust removal mechanism 7 includes an industrial vacuum cleaner 71 and a rotating shaft 72. The rotating shaft 72 is horizontally rotatably mounted on a movable frame 6. A rotating mechanism 73 for rotating the rotating shaft 72 180° is provided on one side of the movable frame 6. Connecting plates 74 are symmetrically arranged at both ends of the rotating shaft 72. A cleaning roller shaft 75 is rotatably mounted between the two connecting plates 74. A cleaning brush 751 is provided on the outside of the cleaning roller shaft 75. A first rotary motor 76 for driving the cleaning roller shaft 75 to rotate is provided on the outer wall of one of the two connecting plates 74. The cleaning roller shaft 75 has a hollow structure and multiple suction ports 752 are provided on the outside of the cleaning roller shaft 75. The industrial vacuum cleaner 71 is mounted on the frame 1. A suction hose 753 is rotatably connected to the end of the cleaning roller shaft 75 away from the first rotary motor 76. The end of the suction hose 753 is connected to the working end of the industrial vacuum cleaner 71.

[0045] After the movable frame 6 moves the dust removal mechanism 7 close to the lower mold 3 and reaches a suitable working position, the dust removal operation is ready to start. At this time, the rotating mechanism 73 on one side of the movable frame 6 drives the flipping shaft 72 to rotate 180°, so that the cleaning roller shaft 75 is adjusted to a direction that matches the inside of the lower mold 3, ensuring that the cleaning roller shaft 75 and the cleaning brushes 751 on it can better contact various areas inside the lower mold 3. After the rotation is in place, the first rotating motor 76 starts, driving the cleaning roller shaft 75 to rotate. The cleaning brushes 751 set on the outside of the cleaning roller shaft 75 rotate accordingly and contact the inner surface of the lower mold 3. During the rotation, the cleaning brushes 751 can brush off the dust, debris and other impurities attached to the inside of the lower mold 3. The cleaning roller shaft 75 has a hollow structure and multiple suction ports 752 are provided on its outside. While the cleaning brushes 751 are cleaning the inside of the lower mold 3, the suction ports 752 are also cleaning the inside of the lower mold 3. 52 begins to function. The industrial vacuum cleaner 71 is connected to the cleaning roller 75 via the suction hose 753. The industrial vacuum cleaner 71 generates suction, drawing dust, debris, and other impurities brushed off by the cleaning brush 751 into the cleaning roller 75 through the suction port 752. The debris is then transported back to the industrial vacuum cleaner 71 for collection via the suction hose 753. This simultaneous vacuuming and cleaning effectively prevents impurities from flying during the cleaning process, ensuring effective dust removal while maintaining a clean working environment. The rotating cleaning roller 75 and the continuously working suction port 752 continuously clean different areas inside the lower mold 3, ensuring that all areas inside the lower mold 3 are cleaned. This comprehensive and efficient dust removal operation provides a foundation for the subsequent accurate measurement of the surface temperature and humidity of the lower mold 3 by the infrared temperature and humidity detector 61 and the uniform spraying of the loosening agent by the spraying mechanism 5.

[0046] During the rotation of the cleaning roller 75, the suction hose 753 does not rotate on its own. A U-shaped plate 77 is provided on one side of the connecting plate 74, and a through hole is provided on the U-shaped plate 77. A bearing 771 is provided in the through hole. The connecting end of the cleaning roller 75 is connected to the bearing 771, and one end of the suction hose 753 is connected to the through hole. In this way, the suction hose 753 and the connecting end of the cleaning roller 75 are connected without direct contact. Therefore, when the cleaning roller 75 rotates, it will not drive the suction hose 753 to rotate on its own.

[0047] Reference Figure 6 and Figure 7 As shown: The cleaning brush 751 and the dust suction port 752 are both arranged in a spiral pattern on the surface of the cleaning roller shaft 75.

[0048] The cleaning brushes 751 and the suction ports 752 are spirally arranged around the cleaning roller 75, allowing the sweeping and vacuuming operations to be carried out efficiently and in tandem when the cleaning roller 75 rotates. As the cleaning roller 75 rotates, each cleaning brush 751 brushes across the inner surface of the lower mold 3 in sequence, removing dust and debris from the mold surface. The suction ports 752 follow closely behind the cleaning brushes 751, using the suction force generated by the industrial vacuum cleaner 71 to promptly remove the brushed-off impurities. Due to the spiral layout, the cleaning brushes 751 and the suction ports 752 can cover a larger area inside the lower mold 3, avoiding cleaning dead corners and improving the comprehensiveness and efficiency of dust removal. The gap between the cleaning brushes 751 and the suction ports 752 is designed to prevent mutual interference between the two during operation.

[0049] Reference Figure 5 and Figure 9 As shown: The rotating mechanism 73 includes a first linear cylinder 731, a rack 732, and a gear 733. The gear 733 is coaxially disposed at one end of the flipping shaft 72. The rack 732 is horizontally disposed below the gear 733 and meshes with the gear 733. A limiting block 7321 is provided at the bottom of the rack 732. The moving frame 6 is provided with a limiting groove 7322 for the limiting block 7321 to move. The first linear cylinder 731 is disposed on the moving frame 6, and the output end of the first linear cylinder 731 is connected to one end of the rack 732.

[0050] When it is necessary to clean the inside of the lower mold 3, the first linear cylinder 731 is activated. The output end of the first linear cylinder 731 begins to move linearly. Since its output end is connected to one end of the rack 732, it will drive the rack 732 to move horizontally. Under the drive of the first linear cylinder 731, the rack 732 moves horizontally. At the same time, the limiting block 7321 at the bottom of the rack 732 moves within the limiting groove 7322 on the moving frame 6. The function of the limiting groove 7322 is to guide and limit the movement of the rack 732, ensuring that the rack 732 can only move horizontally. The rack 732 moves in a straight line in the horizontal direction to prevent it from deviating or wobbling. When the rack 732 moves in the horizontal direction, it will drive the gear 733 that meshes with it to rotate. Since the gear 733 is coaxially set at one end of the flip shaft 72, the rotation of the gear 733 will drive the flip shaft 72 to rotate synchronously. Through parameters such as the stroke of the first linear cylinder 731, the length of the rack 732 and the number of teeth of the gear 733, the first linear cylinder 731 pushes the rack 732 to move a certain distance, and the gear 733 just drives the flip shaft 72 and the cleaning roller shaft 75 to rotate 180°.

[0051] Reference Figures 10 to 13 As shown: The movable frame 6 is provided with a connecting shaft 62 on the side away from the infrared temperature and humidity detector 61, which is flush with the cleaning roller shaft 75 when it is flipped to the lowest position. A cleaning plate 621 extending radially is provided on the outside of the connecting shaft 62.

[0052] After the dust removal mechanism 7 completes the dust removal operation on the lower mold 3, the flipping shaft 72 drives the cleaning roller shaft 75 to flip to the lowest position. At this time, the connecting shaft 62 on the moving frame 6 is flush with the cleaning roller shaft 75. The cleaning plate 621 extending radially outside the connecting shaft 62 will contact the cleaning brush 751 on the cleaning roller shaft 75. When the cleaning brush 751 contacts the cleaning plate 621, the cleaning roller shaft 75 is driven to rotate by the first rotary motor 76. During the rotation of the cleaning roller shaft 75, the cleaning plate 621 scrapes the cleaning brush 751, which can... The cleaning brush 751 effectively scrapes off dust, debris, and other impurities adsorbed or entangled during the cleaning process. Simultaneously, the industrial vacuum cleaner 71 is activated, which sucks in the scraped dust through the suction port 752 and collects it. Through this cleaning method, the cleaning brush 751 is kept clean, avoiding the problem of reduced cleaning ability due to the accumulation of impurities. The clean cleaning brush 751 can more effectively brush off impurities on the mold surface, ensuring the cleaning effect of the dust removal mechanism 7, thereby improving the working quality of the entire prototype injection molding device.

[0053] Reference Figures 12 to 13As shown: The two ends of the connecting shaft 62 are rotatably mounted on the movable frame 6. One end of the cleaning roller shaft 75 is coaxially provided with a main friction wheel 63, and one end of the connecting shaft 62 is provided with a first auxiliary friction wheel 64. A second auxiliary friction wheel 66 is provided on the side of the first auxiliary friction wheel 64, which can rub against the main friction wheel 63. The second auxiliary friction wheel 66 is rotatably mounted on the movable frame 6 via a rotating shaft. The diameters of the first auxiliary friction wheel 64 and the second auxiliary friction wheel 66 are smaller than the diameter of the main friction wheel 63.

[0054] When the cleaning brush 751 on the cleaning roller 75 contacts the cleaning plate 621, the cleaning roller 75 begins to rotate under the drive of the first rotary motor 76. The main friction wheel 63, coaxial with it, rotates synchronously. During rotation, the main friction wheel 63 generates friction with the second auxiliary friction wheel 66. Since the second auxiliary friction wheel 66 is rotatably mounted on the movable frame 6 via a rotating shaft, it begins to rotate under the drive of the main friction wheel 63. The rotation of the second auxiliary friction wheel 66 will cause a chain reaction. Because the first auxiliary friction wheel 64 and the second auxiliary friction wheel 66 are closely adjacent, the rotation of the second auxiliary friction wheel 66 will cause the first auxiliary friction wheel 64 to rotate as well. The first auxiliary friction wheel 64 is mounted at one end of the connecting shaft 62, so the first auxiliary friction wheel... The rotation of 64 causes the connecting shaft 62 to rotate as well. When the connecting shaft 62 rotates, the cleaning plate 621 also rotates, thereby cleaning the cleaning brush 751. In this process, the diameters of the first friction wheel 64 and the second friction wheel 66 are smaller than the diameter of the main friction wheel 63. This size difference can change the force transmission and rotation speed. When the smaller diameter first friction wheel 64 and the second friction wheel 66 cooperate with the larger diameter main friction wheel 63, the rotation speed of the first friction wheel 64 will be relatively higher, so that the connecting shaft 62 drives the cleaning plate 621 to rotate at a faster speed, enhancing the cleaning effect on the cleaning brush 751 and more efficiently scraping off the dust, debris and other impurities adsorbed or entangled by the cleaning brush 751 during the dust removal process.

[0055] Secondly, during the above-mentioned operation, the cleaning roller 75 and the connecting shaft 62 rotate in opposite directions. Furthermore, to improve the cleaning effect, multiple cleaning plates 621 are provided and are equidistantly distributed along the axis of the connecting shaft. The multiple cleaning plates 621, in conjunction with the counter-rotation of the cleaning roller 75 and the connecting shaft 62, allow the cleaning plates 621 to more comprehensively cover all parts of the cleaning brush 751. During the counter-rotation, the cleaning plates 621 exert a stronger force when scraping the cleaning brush 751, further scraping off the dust, debris, and other impurities that the cleaning brush 751 has adsorbed or become entangled during the cleaning process, ensuring that the cleaning brush 751 remains in a good clean state, thereby improving the working performance of the entire cleaning mechanism.

[0056] Reference Figure 10 and Figure 12As shown: A magnet 741 is provided on one side of the connecting plate 74, and an iron block 742 corresponding to the magnet 741 is provided on the movable frame 6. When the cleaning brush 751 contacts the cleaning plate 621, the magnet 741 and the iron block 742 magnetically attract each other.

[0057] The moment the cleaning brush 751 comes into contact with the cleaning plate 621, the magnet 741 and the iron block 742 magnetically attract each other. The magnetic field generated by the magnet 741 exerts an attractive force on the iron block 742, which generates an additional connecting force between the connecting plate 74 and the moving frame 6. This ensures that the relative position between the cleaning roller 75 and the connecting shaft 62 is more stable during the cleaning process, and avoids the cleaning brush 751 from losing contact or having unstable contact with the cleaning plate 621 due to vibration or other external forces.

[0058] Reference Figure 12 and Figure 13 As shown: A dust cover 65 is fitted over the outside of the connecting shaft 62. The two sides of the dust cover 65 are mounted on the movable frame 6. The dust cover 65 can cover the cleaning plate 621, and the dust cover 65 has an opening at the part corresponding to the cleaning roller shaft 75. The dust cover 65 is used to prevent dust generated by the cleaning brush 751 from splashing and spreading during the cleaning process.

[0059] When the cleaning brush 751 comes into contact with the cleaning plate 621, the cleaning roller 75 drives the cleaning brush 751 to rotate, and the connecting shaft 62 drives the cleaning plate 621 to rotate for cleaning. The dust scraped off the cleaning brush 751 by the cleaning plate 621 cannot splash and spread to the surroundings due to the blocking effect of the dust cover 65.

[0060] Reference Figure 5 as well as Figure 14 As shown: The movable frame 51 is provided with a linear slide 511 arranged along the length direction of the lower mold 3. The bottom of the movable frame 6 is located at the working end of the linear slide 511. The linear slide 511 is used to drive the movable frame 6 to move linearly along the length direction of the lower mold 3.

[0061] When the dust removal mechanism 7 cleans the lower template, the operating parameters of the linear slide table 511 can be set according to the length of the lower template and the cleaning requirements, so that the moving frame 6 moves along the length of the lower mold 3 at a suitable speed, ensuring that the cleaning brush 751 can clean the surface of the lower template thoroughly and evenly. When the moving frame 6 reaches one end of the lower template and completes one cleaning stroke, the moving frame 6 moves in the opposite direction to perform the next cleaning stroke.

[0062] Reference Figure 14As shown: The spraying mechanism 5 also includes an XY-axis electric slide 52 and a loosening agent nozzle 53. The XY-axis electric slide 52 is located on the top of the movable frame 51, and the loosening agent nozzle 53 is located at the working end of the XY-axis electric slide 52. The XY-axis electric slide 52 is used to drive the loosening agent nozzle 53 to move in the XY direction.

[0063] When it is necessary to spray a loosening agent into the interior of the lower mold 3, the loosening agent nozzle 53 is moved along a preset path in the XY plane by the XY-axis electric slide 52. The loosening agent nozzle 53 turns the spraying function on or off according to the injection molding process requirements. When the loosening agent nozzle 53 moves to the position where the loosening agent needs to be sprayed, the loosening agent nozzle 53 is turned on, and the loosening agent is evenly sprayed onto the target surface such as the lower mold plate. After the area is sprayed, the loosening agent nozzle 53 is turned off, and it continues to move to the next target position for spraying. The precise control of the position of the loosening agent nozzle 53 by the XY-axis electric slide can ensure the accuracy and uniformity of the loosening agent spraying, meet the process requirements for mold surface treatment before injection molding of the prototype model, and improve the quality of the injection molded product.

[0064] Reference Figure 14 As shown: The bottom of the movable frame 51 is symmetrically provided with sliders 512, and the table surface of the frame 1 is provided with a slide rail 513 for the sliders 512 to slide. An extension plate 11 is provided on one side of the table surface of the frame 1. One end of the slide rail 513 extends toward the extension plate 11. A second linear cylinder 12 is provided on the top of the extension plate 11. The output shaft of the second linear cylinder 12 is connected to one side of the movable plate.

[0065] When the lower mold 3 needs to be flipped, in order to avoid interference and collision between the spraying mechanism 5, the dust removal mechanism 7, and the infrared temperature and humidity detector 61 on the movable frame 51 and the flipped lower mold 3, the second linear cylinder 12 will move the movable frame 51 towards the extension plate 11. After the lower mold 3 has been flipped and the inside of the lower mold 3 is facing down, the movable frame 51 moves to the working position directly below the lower mold 3. At this time, the dust removal mechanism 7, the infrared temperature and humidity detector 61, and the spraying mechanism 5 on the movable frame 51 can carry out the pretreatment work of the lower mold 3 normally.

[0066] Reference Figure 4 As shown: The flipping mechanism 4 includes two mounting plates 41 and a flipping motor 42. The two mounting plates 41 are mirror images of each other on both sides of the lower mold 3. The bottom of the mounting plates 41 is fixedly connected to the table surface of the frame 1. The two sides of the lower mold 3 are axially connected to the corresponding two mounting plates 41 through flipping rods. The flipping motor 42 is mounted on one of the two mounting plates 41. The output shaft of the flipping motor 42 is connected to one end of one of the two flipping rods.

[0067] When the lower mold 3 needs to be flipped, the flipping motor 42 drives the lower mold 3 to rotate 180° around the axis of the flipping rod, so that the interior of the lower mold 3, which was originally facing upwards, is flipped downwards, providing a suitable posture for subsequent operations such as dust removal, inspection and spraying of loosening agent. After the mold pretreatment operation is completed, the flipping motor 42 rotates in the opposite direction, driving the flipping rod to flip the lower mold 3 back to the initial position so that it can be closed with the upper mold 2 for injection molding of the prototype model.

[0068] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A prototype model injection molding apparatus, comprising a frame (1), wherein an upper mold (2) and a lower mold (3) for injection molding a prototype model are provided on the frame (1), a flipping mechanism (4) for driving the lower mold (3) to flip is also provided on the frame (1), and a spraying mechanism (5) provided on the frame (1) for spraying a loosening agent into the interior of the flipped lower mold (3), characterized in that, The spraying mechanism (5) includes a movable frame (51) that can move directly below the lower mold (3). The movable frame (51) is provided with a movable frame (6) that can move along the length of the lower mold (3). The movable frame (6) is provided with a dust removal mechanism (7) for cleaning the inside of the lower mold (3) after it has been flipped. The movable frame (6) is also provided with an infrared temperature and humidity detector (61) for measuring the surface temperature and humidity of the lower mold (3). The movable frame (6) is provided with a connecting shaft (62) on the side away from the infrared temperature and humidity detector (61) that is flush with the cleaning roller shaft (75) when it is flipped to the lowest position. A cleaning plate (621) extending radially is provided on the outside of the connecting shaft (62).

2. The hand-made model injection molding device according to claim 1, characterized in that, The dust removal mechanism (7) includes an industrial vacuum cleaner (71) and a rotating shaft (72). The rotating shaft (72) is horizontally rotatably mounted on a movable frame (6). A rotating mechanism (73) for rotating the rotating shaft (72) 180° is provided on one side of the movable frame (6). Connecting plates (74) are symmetrically arranged at both ends of the rotating shaft (72). A cleaning roller (75) is rotatably arranged between the two connecting plates (74). A cleaning brush (751) is provided on the outside of the cleaning roller (75). The two connecting plates (74) 74) A first rotary motor (76) for driving the cleaning roller shaft (75) to rotate is provided on the outer wall of one of the connecting plates (74). The cleaning roller shaft (75) is a hollow structure. Multiple dust suction ports (752) are provided on the outside of the cleaning roller shaft (75). The industrial vacuum cleaner (71) is set on the frame (1). A vacuum suction hose (753) is rotatably connected to the end of the cleaning roller shaft (75) away from the first rotary motor (76). The end of the vacuum suction hose (753) is connected to the working end of the industrial vacuum cleaner (71).

3. The hand-made model injection molding device according to claim 2, characterized in that, The cleaning brush (751) and the suction port (752) are arranged in a spiral pattern on the surface of the cleaning roller (75).

4. The hand-made model injection molding device according to claim 3, characterized in that, The rotating mechanism (73) includes a first linear cylinder (731), a rack (732) and a gear (733). The gear (733) is coaxially disposed at one end of the flipping shaft (72). The rack (732) is horizontally disposed below the gear (733) and meshes with the gear (733). A limiting block (7321) is provided at the bottom of the rack (732). A limiting groove (7322) for the limiting block (7321) to move is provided on the moving frame (6). The first linear cylinder (731) is disposed on the moving frame (6). The output end of the first linear cylinder (731) is connected to one end of the rack (732).

5. The hand-made model injection molding device according to claim 2, characterized in that, The two ends of the connecting shaft (62) are rotatably mounted on the movable frame (6). One end of the cleaning roller shaft (75) is coaxially provided with a main friction wheel (63). One end of the connecting shaft (62) is provided with a first auxiliary friction wheel (64). A second auxiliary friction wheel (66) that can rub against the main friction wheel (63) is provided on the side of the first auxiliary friction wheel (64). The second auxiliary friction wheel (66) is rotatably mounted on the movable frame (6) via a rotating shaft. The diameters of the first auxiliary friction wheel (64) and the second auxiliary friction wheel (66) are smaller than the diameter of the main friction wheel (63).

6. The hand-made prototype injection molding device according to claim 5, characterized in that, A magnet (741) is provided on one side of the connecting plate (74), and an iron block (742) corresponding to the magnet (741) is provided on the movable frame (6). When the cleaning brush (751) contacts the cleaning plate (621), the magnet (741) and the iron block (742) magnetically attract each other.

7. The hand-made model injection molding device according to claim 6, characterized in that, The connecting shaft (62) is fitted with a dust cover (65). The dust cover (65) is mounted on the movable frame (6) on both sides. The dust cover (65) can cover the cleaning plate (621). The dust cover (65) has an opening at the part corresponding to the cleaning roller shaft (75). The dust cover (65) is used to prevent dust generated during the cleaning process of the cleaning brush (751) from splashing and spreading.

8. The hand-made model injection molding device according to claim 1, characterized in that, The movable frame (51) is provided with a linear slide (511) arranged along the length direction of the lower mold (3). The bottom of the movable frame (6) is located at the working end of the linear slide (511). The linear slide (511) is used to drive the movable frame (6) to move linearly along the length direction of the lower mold (3).

9. The hand-made model injection molding device according to claim 1, characterized in that, The spraying mechanism (5) also includes an XY-axis electric slide (52) and a loosening agent nozzle (53). The XY-axis electric slide (52) is located on the top of the movable frame (51), and the loosening agent nozzle (53) is located at the working end of the XY-axis electric slide (52). The XY-axis electric slide (52) is used to drive the loosening agent nozzle (53) to move in the XY direction.

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