Hand plate model injection molding device

Abstract

The invention relates to the technical field of hand plate model production, in particular to a hand plate model injection molding device which comprises a rack, an upper mold and a lower mold which are used for injection molding of a hand plate model are arranged on the rack, a turnover mechanism and a spraying mechanism arranged on the rack are further arranged on the rack, and the spraying mechanism comprises a movable frame. A movable frame capable of moving in the length direction of the lower mold is arranged on the movable frame, an ash removal mechanism used for removing ash in the turned lower mold is arranged on the movable frame, an infrared temperature and humidity detector used for measuring the surface temperature and humidity of the lower mold is further arranged on the movable frame, and the ash removal mechanism moves in the length direction of the lower mold through the movable frame. Dust, chippings and other impurities in the lower mold can be comprehensively removed, the situation that the impurities affect the fitting degree of an injection molding material and the mold is avoided, the infrared temperature and humidity detector measures the temperature and humidity of the surface of the lower mold in real time, it is ensured that the loosening agent can achieve the optimal spraying effect under different temperature and humidity conditions, and the product yield is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of prototype model production, and specifically relates to an injection molding device for prototype models. Background Art

[0002] In the field of modern industrial manufacturing, as an important link in product design verification and functional testing, the injection molding quality of prototype models directly affects the product R & D cycle and final performance.

[0003] An injection molding die for prototype model forming provided by the Chinese authorized patent publication number CN117428990A belongs to the field of prototype model production, and includes a frame. It also includes: a forming mechanism arranged on the top of the frame, and the forming mechanism is used for injection molding of the prototype model; a spraying agent mechanism arranged on the frame, and the spraying agent mechanism is used for extracting a loosening agent and spraying the loosening agent onto the forming mechanism; an adjusting mechanism located on the spraying agent mechanism, and the adjusting mechanism drives the spraying agent mechanism to move for spraying the loosening agent at different positions of the forming mechanism; a swinging mechanism arranged on the adjusting mechanism. Through the mutual cooperation between the spraying agent mechanism and the adjusting mechanism, before the forming mechanism injects and molds the prototype model, the inner wall of the lower die can be sprayed with a loosening agent. The loosening agent can reduce the adhesion of materials, make it easier to flow and remove bubbles, make the surface of the produced prototype model smoother, reduce the generation of pits, and improve the yield rate.

[0004] However, the above injection molding device for prototype models has many deficiencies in the mold pretreatment link. On the one hand, the cleaning of the mold surface mostly relies on manual operation or simple blowing equipment, and it is difficult to completely remove impurities such as dust and debris attached to the mold surface. These residual impurities will cause defects such as bubbles and dents during the injection molding process, seriously affecting the molding quality of the prototype model. On the other hand, in terms of spraying the loosening agent, a fixed parameter spraying method is mostly used, without considering the influence of environmental factors such as the surface temperature and humidity of the mold on the spraying effect. The change of the surface temperature and humidity of the mold will change the physical properties and adhesion effect of the loosening agent. If no targeted adjustment is made, the loosening agent is likely to be unevenly distributed, making it difficult to demold the product after injection molding, and even causing product damage. Therefore, there is an urgent need for an injection molding device for prototype models that can achieve efficient dust cleaning, precise spraying, and automatic adjustment according to environmental parameters. Summary of the Invention

[0005] In view of the above problems, an injection molding device for prototype models is provided. The dust cleaning mechanism moves along the length direction of the lower die through a moving frame, which can comprehensively remove impurities such as dust and debris inside the lower die, avoiding the influence of impurities on the fit between the injection molding material and the mold. The infrared temperature and humidity detector measures the surface temperature and humidity of the lower die in real time to ensure that the loosening agent can achieve the best spraying effect under different temperature and humidity conditions, improving the product qualification rate.

[0006] To solve the problems of the existing technology, the present invention provides a hand model injection molding device, which includes a frame. On the frame, there are an upper mold and a lower mold for injection molding the hand model. The frame is also provided with a flipping mechanism for driving the lower mold to flip, and a spraying mechanism for spraying a loosening agent into the inverted lower mold. The spraying mechanism includes a movable frame that can move directly below the lower mold. On the movable frame, there is a movable carriage that can move along the length direction of the lower mold. On the movable carriage, there is a dust cleaning mechanism for cleaning the inside of the inverted lower mold, and an infrared temperature and humidity detector for measuring the surface temperature and humidity of the lower mold is also provided on the movable carriage.

[0007] Preferably, the dust cleaning mechanism includes an industrial vacuum cleaner and a rotating shaft. The rotating shaft is horizontally rotatably arranged on the movable carriage. On one side of the movable carriage, there is a rotating mechanism for flipping the rotating shaft by 180°. Connecting plates are symmetrically arranged at both ends of the rotating shaft. A cleaning roller shaft is rotatably arranged between the two connecting plates. A cleaning brush is provided on the outer part of the cleaning roller shaft. On the outer wall of one of the two connecting plates, there is a first rotating motor for driving the cleaning roller shaft to rotate. The cleaning roller shaft is a hollow structure. A plurality of dust suction ports are provided on the outer part of the cleaning roller shaft. The industrial vacuum cleaner is arranged on the frame. One end of the cleaning roller shaft far from the first rotating motor is rotatably connected to a dust suction hose. The end of the dust suction hose is connected to the working end of the industrial vacuum cleaner.

[0008] Preferably, the cleaning brushes and the dust suction ports are arranged at intervals in a spiral shape on the surface of the cleaning roller shaft.

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

[0010] Preferably, on the side of the movable carriage far from the infrared temperature and humidity detector, there is a connecting shaft that can be flush with the cleaning roller shaft flipped to the lowest position. A cleaning plate extending radially along it is provided on the outer part of the connecting shaft.

[0011] Preferably, both ends of the connecting shaft are rotatably arranged on the movable carriage. One end of the cleaning roller shaft is coaxially provided with a main friction wheel. One end of the connecting shaft is provided with a first secondary friction wheel. A second secondary friction wheel that can be frictionally engaged with the main friction wheel is provided beside the first secondary friction wheel. The second secondary friction wheel is rotatably arranged on the movable carriage through a rotating shaft. The diameters of the first secondary friction wheel and the second secondary friction wheel 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 contacts the cleaning plate, the magnet and the iron block are magnetically attracted to each other.

[0013] Preferably, the outer sleeve of the connecting shaft is provided with a dust cover, and the two sides of the dust cover are arranged on the movable frame. The dust cover can cover the cleaning plate, and the dust cover is provided with an opening at the position corresponding to the cleaning roller. The dust cover is used to prevent the 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, the bottom of the movable frame is arranged at the working end of the linear slide, and the linear slide is used to drive the movable frame to perform linear motion along the length direction of the lower mold.

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

[0016] Preferably, sliders are symmetrically arranged at the bottom of the movable frame, a slide rail for sliding the slider is arranged on the table top of the frame, an extension plate is arranged on one side of the table top of the frame, one end of the slide rail extends toward the direction of the extension plate, a second linear cylinder is arranged on the top of the extension plate, 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-imaged on both sides of the lower mold. The bottom of the mounting plates is fixedly connected to the table top 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 arranged on one of the two mounting plates, and the output shaft of the flipping motor is transmission-connected to one end of one of the two flipping rods.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The cleaning mechanism moves along the length direction of the lower mold through the mobile frame, which can completely remove dust, debris and other impurities inside the lower mold, avoid impurities affecting the fit between the injection molding material and the mold, reduce surface defects of the prototype model, and improve product appearance quality and precision.

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

[0021] Figure 1 is a schematic perspective view of a prototype model injection molding device Figure 1 .

[0022] Figure 2 is a schematic perspective view of a prototype model injection molding device Figure 2 .

[0023] Figure 3 is a working state diagram of the dust cleaning mechanism of a prototype model injection molding device.

[0024] Figure 4 is a schematic partial perspective view of a prototype model injection molding device.

[0025] Figure 5 is a schematic partial perspective view of the dust cleaning mechanism of a prototype model injection molding device Figure 1 .

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

[0027] Figure 7 is Figure 6 the sectional view taken along A-A in

[0028] Figure 8 is Figure 7 the enlarged view at B in

[0029] Figure 9 is a schematic partial perspective view of the rotating mechanism of a prototype model injection molding device.

[0030] Figure 10 is a schematic partial perspective view of the dust cleaning mechanism of a prototype model injection molding device Figure 2 .

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

[0032] Figure 12 is Figure 11 the sectional view taken along C-C in

[0033] Figure 13 Yes Figure 11 It is a sectional view along D-D in the middle.

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

[0035] The reference numerals in the figure are: 1, frame; 11, extension plate; 12, second linear cylinder; 2, upper mold; 3, lower mold; 4, flipping mechanism; 41, mounting plate; 42, flipping motor; 5, spray mechanism; 51, movable frame; 511, linear slide; 512, slider; 513, slide rail; 52, XY-axis electric slide; 53, release agent spray head; 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 auxiliary friction wheel; 65, dust cover; 7, dust cleaning mechanism; 71, industrial vacuum cleaner; 72, rotation shaft; 73, rotating mechanism; 731, first linear cylinder; 732, rack; 7321, limit block; 7322, limit groove; 733, gear; 74, connecting plate; 741, magnet; 742, iron block; 75, cleaning roller shaft; 751, cleaning brush; 752, dust suction port; 753, dust suction hose; 76, first rotating motor; 77, U-shaped plate; 771, bearing. Specific implementation manner

[0036] To further understand the features, technical means, and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with the drawings and specific implementation manners.

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

[0038] Before injection molding the prototype, in order to facilitate operations such as dust cleaning and spraying of the release agent on the lower mold 3, the flipping mechanism 4 is activated to flip the lower mold 3 by 180°, so that the interior of the lower mold 3 faces downward.

[0039] After the flipping is completed, the movable frame 51 brings the dust cleaning mechanism 7, the infrared temperature and humidity detector 61 and the spraying agent mechanism 5 close to the lower mold 3. When it moves to a suitable position, it stops to ensure that the dust cleaning mechanism 7, the infrared temperature and humidity detector 61 and the spraying agent mechanism 5 can maintain an appropriate working distance from the lower mold 3, preparing for subsequent dust cleaning, detection and spraying of the loosening agent operations.

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

[0041] When the dust cleaning is completed, the infrared temperature and humidity detector 61 starts to work. 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 on the surface of the lower mold 3 according to the characteristics of the reflected light. A control system is set on the frame 1, and the data measured by the infrared temperature and humidity detector 61 will be transmitted to the control system in real time. The control system adjusts the spraying parameters of the spraying agent mechanism 5 according to the transmitted temperature and humidity data, combined with the preset programs and algorithms, to ensure that the loosening agent can achieve the best spraying effect under different temperature and humidity conditions.

[0042] The spraying agent mechanism 5 sprays the loosening agent into the lower mold 3. The loosening agent can reduce the adhesion between the injection molding material and the mold surface, make the injection molding material flow more easily during the injection molding process, and at the same time help to discharge 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 the dust cleaning, temperature and humidity detection and loosening agent spraying are completed, the flipping mechanism 4 starts again to flip the lower mold 3 back to the initial position, making the lower mold 3 return to the 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 be clamped. After the injection molding material is injected, the injection molding of the prototype model can be carried out.

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

[0045] After the moving frame 6 drives the dust cleaning mechanism 7 to approach the lower mold 3 and reaches the appropriate working position, the dust cleaning work is ready to start. At this time, the rotating mechanism 73 on one side of the moving frame 6 drives the turning shaft 72 to perform a 180° turn, so that the cleaning roller shaft 75 is adjusted to a direction adapted to the inside of the lower mold 3, ensuring that the cleaning roller shaft 75 and the cleaning brush 751 thereon can better contact various areas inside the lower mold 3. After the turning is in place, the first rotating motor 76 starts, driving the cleaning roller shaft 75 to rotate. The cleaning brush 751 arranged outside the cleaning roller shaft 75 rotates accordingly and contacts the inner surface of the lower mold 3. During the rotation process, the cleaning brush 751 can brush off impurities such as dust and debris attached to the inside of the lower mold 3. The cleaning roller shaft 75 is of a hollow structure, and a plurality of dust suction ports 752 are arranged outside it. While the cleaning brush 751 sweeps the inside of the lower mold 3, the dust suction ports 752 start to function. The industrial vacuum cleaner 71 is connected to the cleaning roller shaft 75 through the dust suction hose 753. The industrial vacuum cleaner 71 generates suction, sucking the dust, debris and other impurities brushed off by the cleaning brush 751 into the inside of the cleaning roller shaft 75 through the dust suction ports 752, and then transmitting them to the industrial vacuum cleaner 71 through the dust suction hose 753 for collection, realizing synchronous dust suction and cleaning, effectively avoiding the flying of impurities during the cleaning process, ensuring the dust cleaning effect while keeping the working environment clean. The rotating cleaning roller shaft 75 and the continuously working dust suction ports 752 continuously perform dust cleaning operations on different areas inside the lower mold 3, ensuring that all areas inside the lower mold 3 can be cleaned, realizing comprehensive and efficient dust cleaning operations, and providing a basis 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 shaft 75, the dust suction hose 753 does not rotate at this time. A U-shaped plate 77 is provided on one side of the connecting plate 74. A perforation is provided through the U-shaped plate 77, and a bearing 771 is provided in the perforation. The connecting end of the cleaning roller shaft 75 is connected to the bearing 771, and one end of the dust suction hose 753 is communicated with the perforation. In this way, the dust suction hose 753 is communicated with the connecting end of the cleaning roller shaft 75 without direct contact. Therefore, when the cleaning roller shaft 75 rotates, it will not drive the dust suction hose 753 to rotate.

[0047] Refer to Figure 6 and Figure 7 As shown: The cleaning brush 751 and the dust suction port 752 are arranged at intervals in a spiral shape on the surface of the cleaning roller shaft 75.

[0048] The cleaning brush 751 and the dust suction port 752 are distributed in a spiral shape around the cleaning roller shaft 75, so that when the cleaning roller shaft 75 rotates, the cleaning and dust suction operations can be carried out efficiently in cooperation. When the cleaning roller shaft 75 rotates, each cleaning brush 751 brushes over the inner surface of the lower mold 3 in turn during the rotation process, peeling off dust and debris from the mold surface, and the dust suction port 752 will follow closely behind the cleaning brush 751. Using the suction force generated by the industrial vacuum cleaner 71, the impurities brushed off are sucked away in time. Due to the spiral layout, the cleaning brush 751 and the dust suction port 752 can cover a larger area inside the lower mold 3, avoiding cleaning dead corners and improving the comprehensiveness and efficiency of dust cleaning. A gap is provided between the cleaning brush 751 and the dust suction port 752 to prevent interference between the two during the working process.

[0049] Refer to 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 arranged at one end of the turning shaft 72. The rack 732 is horizontally arranged below the gear 733, and the rack 732 meshes with the gear 733. A limit block 7321 is provided at the bottom of the rack 732, and a limit groove 7322 for the limit block 7321 to move is provided on the moving frame 6. The first linear cylinder 731 is arranged 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 ash inside the lower mold 3, control the first linear cylinder 731 to start. The output end of the first linear cylinder 731 starts 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. Driven by the first linear cylinder 731, the rack 732 moves along the horizontal direction. At the same time, the limit block 7321 at the bottom of the rack 732 moves in the limit groove 7322 on the moving frame 6. The function of the limit groove 7322 is to guide and limit the movement of the rack 732, ensuring that the rack 732 can only move linearly in the horizontal direction and preventing it from shifting or shaking. When the rack 732 moves horizontally, it will drive the meshing gear 733 to rotate. Since the gear 733 is coaxially arranged at one end of the turning shaft 72, the rotation of the gear 733 will drive the turning 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, after the first linear cylinder 731 pushes the rack 732 to move a certain distance, the gear 733 just drives the turning shaft 72 and the cleaning roller shaft 75 to rotate 180°.

[0051] Refer to Figures 10 to 13 As shown: On the side of the moving frame 6 away from the infrared temperature and humidity detector 61, there is a connecting shaft 62 that can be flush with the cleaning roller shaft 75 flipped to the lowest position. The outside of the connecting shaft 62 is provided with a cleaning plate 621 extending radially along it.

[0052] After the ash cleaning mechanism 7 completes the ash cleaning operation on the lower mold 3, the turning 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, and 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 rotating motor 76. During the rotation of the cleaning roller shaft 75, the cleaning plate 621 has a scraping effect on the cleaning brush 751, which can effectively scrape off impurities such as dust and debris adsorbed or entangled by the cleaning brush 751 during the ash cleaning process. At the same time, start the industrial vacuum cleaner 71, which can suck the scraped dust through the suction port 752 and collect it through the industrial vacuum cleaner 71. Through this cleaning method, the cleaning brush 751 is kept clean, avoiding the problem of reduced cleaning ability caused by impurity accumulation. The clean cleaning brush 751 can more effectively brush off the impurities on the mold surface, ensuring the ash cleaning effect of the ash cleaning mechanism 7, thereby improving the working quality of the entire prototype injection molding device.

[0053] Refer to Figures 12 to 13As shown in the figure, both ends of the connecting shaft 62 are rotatably arranged on the moving 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 sub-friction wheel 64. A second sub-friction wheel 66 that can be in frictional cooperation with the main friction wheel 63 is arranged beside the first sub-friction wheel 64. The second sub-friction wheel 66 is rotatably arranged on the moving frame 6 through a rotating shaft. The diameters of the first sub-friction wheel 64 and the second sub-friction wheel 66 are smaller than the diameter of the main friction wheel 63.

[0054] When the cleaning brush 751 on the cleaning roller shaft 75 contacts the cleaning plate 621, the cleaning roller shaft 75 starts to rotate under the drive of the first rotating motor 76, and the coaxial main friction wheel 63 rotates synchronously therewith. During the rotation of the main friction wheel 63, a frictional effect will be generated with the second sub-friction wheel 66. Since the second sub-friction wheel 66 is rotatably arranged on the moving frame 6 through a rotating shaft, the second sub-friction wheel 66 starts to rotate under the drive of the main friction wheel 63. The rotation of the second sub-friction wheel 66 will produce a chain reaction. Because the first sub-friction wheel 64 and the second sub-friction wheel 66 are closely adjacent, the rotation of the second sub-friction wheel 66 will drive the first sub-friction wheel 64 to rotate together. And the first sub-friction wheel 64 is installed at one end of the connecting shaft 62, so the rotation of the first sub-friction wheel 64 will cause the connecting shaft 62 to rotate accordingly. When the connecting shaft 62 rotates, the cleaning plate 621 will also rotate accordingly, thereby realizing the cleaning work of the cleaning brush 751. In this process, the diameters of the first sub-friction wheel 64 and the second sub-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 sub-friction wheel 64 and second sub-friction wheel 66 cooperate with the larger-diameter main friction wheel 63, the rotation speed of the first sub-friction wheel 64 will be relatively high, 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 cleaning process.

[0055] Secondly, during the above working process, the cleaning roller shaft 75 and the connecting shaft 62 will rotate in opposite directions. Further, to improve the cleaning effect, a plurality of cleaning plates 621 are provided and are equidistantly distributed along the axis of the connecting shaft. The cooperation of the plurality of cleaning plates 621 with the reverse rotation of the cleaning roller shaft 75 and the connecting shaft 62 can make the cleaning plates 621 more comprehensively cover all parts of the cleaning brush 751. During the reverse rotation process, the acting force when the cleaning plates 621 scrape the cleaning brush 751 is stronger, further scraping off the dust, debris and other impurities adsorbed or entangled by the cleaning brush 751 during the dust cleaning process, ensuring that the cleaning brush 751 maintains a good cleaning state, and thus improving the working performance of the entire dust cleaning mechanism.

[0056] Refer to Figure 10 and Figure 12As shown: One side of the connecting plate 74 is provided with a magnet 741, and the moving frame 6 is provided with an iron block 742 that can correspond to the magnet 741. When the cleaning brush 751 contacts the cleaning plate 621, the magnet 741 and the iron block 742 are magnetically coupled.

[0057] At the moment when the cleaning brush 751 contacts the cleaning plate 621, the magnet 741 and the iron block 742 are magnetically coupled. The magnetic field generated by the magnet 741 exerts an attractive force on the iron block 742, generating an additional connecting force between the connecting plate 74 and the moving frame 6, ensuring that during the cleaning process, the relative position between the cleaning roller shaft 75 and the connecting shaft 62 is more stable, and preventing the cleaning brush 751 from detaching from or having unstable contact with the cleaning plate 621 due to vibration or other external force factors.

[0058] Refer to Figure 12 and Figure 13 As shown: A dust-proof cover 65 is sleeved outside the connecting shaft 62. Both sides of the dust-proof cover 65 are arranged on the moving frame 6. The dust-proof cover 65 can cover the cleaning plate 621, and an opening is provided at the part of the dust-proof cover 65 corresponding to the cleaning roller shaft 75. The dust-proof cover 65 is used to prevent the dust generated during the cleaning process of the cleaning brush 751 from splashing and spreading.

[0059] When the cleaning brush 751 contacts the cleaning plate 621, the cleaning roller shaft 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 in all directions due to the blocking effect of the dust-proof cover 65.

[0060] Refer to Figure 5 and Figure 14 As shown: A linear slide 511 arranged along the length direction of the lower die 3 is provided on the movable frame 51. The bottom of the moving frame 6 is arranged at the working end of the linear slide 511. The linear slide 511 is used to drive the moving frame 6 to perform a linear motion along the length direction of the lower die 3.

[0061] When the dust cleaning mechanism 7 cleans the lower template, the operating parameters of the linear slide 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 direction of the lower die 3 at an appropriate speed, ensuring that the cleaning brush 751 can clean the surface of the lower template comprehensively and evenly. When the moving frame 6 reaches one end of the lower template to complete a cleaning stroke, the moving frame 6 moves in the reverse direction for the next cleaning stroke.

[0062] Refer to Figure 14As shown: the spray mechanism 5 also includes an XY-axis electric slide 52 and a loosening agent nozzle 53. The XY-axis electric slide 52 is arranged on the top of the movable frame 51, and the loosening agent nozzle 53 is arranged 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 the loosening agent on the inside of the lower mold 3, the loosening agent nozzle 53 is moved in the XY plane according to the preset path through the XY axis electric slide 52. The loosening agent nozzle 53 turns on or off the spraying function according to the injection molding process requirements. When the loosening agent nozzle 53 moves to the position where the loosening agent is required to be sprayed, the loosening agent nozzle 53 is turned on to spray the loosening agent evenly on the target surface such as the lower template. After the spraying of the area is completed, the loosening agent nozzle 53 is turned off and continues to move to the next target position for spraying. The position of the loosening agent nozzle 53 is accurately controlled by the XY axis electric slide, which 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 injection molded products.

[0064] Reference Figure 14 As shown: a slider 512 is symmetrically arranged at the bottom of the movable frame 51, a slide rail 513 for the slider 512 to slide is arranged on the table top of the frame 1, an extension plate 11 is arranged on one side of the table top of the frame 1, one end of the slide rail 513 extends toward the extension plate 11, and a second linear cylinder 12 is arranged on the top of the extension plate 11, and 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 spray mechanism 5, the cleaning 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 toward the extension plate 11. After the lower mold 3 is flipped and the interior of the lower mold 3 is facing downward, the movable frame 51 moves to the working position directly below the lower mold 3. At this time, the cleaning mechanism 7, the infrared temperature and humidity detector 61 and the spray mechanism 5 on the movable frame 51 can carry out the pretreatment work on the lower mold 3 normally.

[0066] Reference Figure 4 As shown: the flip mechanism 4 includes two mounting plates 41 and a flip motor 42. The two mounting plates 41 are mirror-imaged on both sides of the lower mold 3. The bottom of the mounting plate 41 is fixedly connected to the table top of the frame 1. The two sides of the lower mold 3 are axially connected to the corresponding two mounting plates 41 through flip rods. The flip motor 42 is arranged on one of the two mounting plates 41, and the output shaft of the flip motor 42 is drivingly connected to one end of one of the two flip rods.

[0067] When the current mold 3 needs to be flipped, the flipping motor 42 drives the lower mold 3 to perform a 180° flip around the axis of the flipping rod, so that the inside of the originally upward-facing lower mold 3 is flipped downward, providing a suitable posture for subsequent operations such as dust cleaning, detection, and spraying of a loosening agent. After the mold pretreatment operation is completed, the flipping motor 42 rotates in the reverse direction, driving the flipping rod to flip the lower mold 3 back to its initial position, so as to be clamped with the upper mold 2 for the injection molding work of the prototype model.

[0068] The above embodiments only express one or several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A prototype model injection molding device, comprising a frame (1), on which an upper mold (2) and a lower mold (3) for injection molding the prototype model are arranged, and the frame (1) is also provided with a flipping mechanism (4) for driving the lower mold (3) to flip, and a spraying mechanism (5) arranged on the frame (1) for spraying a loosening agent into the interior of the flipped lower mold (3), characterized in that: The spray mechanism (5) comprises a movable frame (51) capable of moving directly below the lower mold (3); the movable frame (51) is provided with a movable frame (6) capable of moving 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).

2. A prototype model injection molding device according to claim 1, characterized in that: The dust cleaning mechanism (7) comprises an industrial vacuum cleaner (71) and a flip shaft (72), wherein the flip shaft (72) is arranged on a movable frame (6) in a horizontally rotatable manner, and a rotating mechanism (73) for flipping the flip shaft (72) by 180 degrees is arranged on one side of the movable frame (6), and connecting plates (74) are symmetrically arranged at both ends of the flip shaft (72), and a cleaning roller (75) is rotatably arranged between the two connecting plates (74), and a cleaning brush (751) is arranged on the outside of the cleaning roller (75), and the two connecting plates (74) are arranged on the outside of the cleaning roller (75). 74) A first rotating motor (76) for driving a cleaning roller (75) to rotate is arranged on the outer wall of one of the connecting plates (74); the cleaning roller (75) is a hollow structure; a plurality of dust suction ports (752) are arranged on the outside of the cleaning roller (75); the industrial vacuum cleaner (71) is arranged on the frame (1); one end of the cleaning roller (75) away from the first rotating motor (76) is rotatably connected to a dust suction hose (753); the end of the dust suction hose (753) is connected to the working end of the industrial vacuum cleaner (71).

3. A prototype model injection molding device according to claim 2, characterized in that: The cleaning brush (751) and the dust suction port (752) are both arranged in a spiral shape at intervals on the surface of the cleaning roller (75).

4. A prototype model injection molding device according to claim 3, characterized in that: The rotating mechanism (73) comprises a first linear cylinder (731), a rack (732) and a gear (733); the gear (733) is coaxially arranged at one end of the tilting shaft (72); the rack (732) is horizontally arranged below the gear (733), and the rack (732) is meshed with the gear (733); a limit block (7321) is arranged at the bottom of the rack (732); a limit groove (7322) for the limit block (7321) to move is arranged on the moving frame (6); the first linear cylinder (731) is arranged on the moving frame (6); and the output end of the first linear cylinder (731) is connected to one end of the rack (732).

5. A prototype model injection molding device according to claim 4, characterized in that: A connecting shaft (62) capable of being flush with a cleaning roller (75) flipped to the lowest position is arranged on the side of the movable frame (6) away from the infrared temperature and humidity detector (61), and a cleaning plate (621) extending in its radial direction is arranged outside the connecting shaft (62).

6. A prototype model injection molding device according to claim 5, characterized in that: Both ends of the connecting shaft (62) are rotatably arranged on the movable frame (6); one end of the cleaning roller shaft (75) is coaxially arranged with a main friction wheel (63); one end of the connecting shaft (62) is arranged with a first secondary friction wheel (64); a second secondary friction wheel (66) capable of frictionally cooperating with the main friction wheel (63) is arranged next to the first secondary friction wheel (64); the second secondary friction wheel (66) is rotatably arranged on the movable frame (6) via a rotating shaft; and the diameters of the first secondary friction wheel (64) and the second secondary friction wheel (66) are smaller than the diameter of the main friction wheel (63).

7. A prototype model injection molding device according to claim 6, characterized in that: A magnet (741) is disposed on one side of the connecting plate (74), and an iron block (742) that can correspond to the magnet (741) is disposed on the movable frame (6). When the cleaning brush (751) contacts the cleaning plate (621), the magnet (741) and the iron block (742) are magnetically attracted to each other.

8. A prototype model injection molding device according to claim 7, characterized in that: The outer sleeve of the connecting shaft (62) is provided with a dust cover (65), and the two sides of the dust cover (65) are arranged on the movable frame (6). The dust cover (65) can cover the cleaning plate (621), and the dust cover (65) is provided with an opening at a position corresponding to the cleaning roller (75). The dust cover (65) is used to prevent the dust generated by the cleaning brush (751) from splashing and spreading during the cleaning process.

9. A prototype 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 arranged at the working end of the linear slide (511); and the linear slide (511) is used to drive the movable frame (6) to perform linear motion along the length direction of the lower mold (3).

10. A prototype model injection molding device according to claim 1, characterized in that: The spraying mechanism (5) further comprises an XY-axis electric slide (52) and a loosening agent spray head (53), wherein the XY-axis electric slide (52) is arranged on the top of the movable frame (51), and the loosening agent spray head (53) is arranged on the working end of the XY-axis electric slide (52), and the XY-axis electric slide (52) is used to drive the loosening agent spray head (53) to move in the XY direction.

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