Energy-saving vertical injection molding machine based on servo drive

Abstract

This invention relates to the field of plastic recycling equipment technology, specifically to an energy-saving vertical injection molding machine based on servo drive. The machine includes a support frame, with a feeding pipe located near the upper front end of the support frame. A fixing plate is fixedly connected to the lower front end of the support frame. Four guide rods are fixedly connected to the upper end of the fixing plate, and a baffle is slidably connected to the outer sides of the four guide rods. A mounting plate is fixedly connected to the upper end of the baffle, and a lifting mechanism for demolding is provided on the upper end of the mounting plate. Multiple industrial cameras on the trimming assembly can perform a full-range scan of the inner wall of the electronic component casing, accurately identifying air bubbles and cavities caused by moisture and volatiles in the recycled material melt, thus preventing defective products from entering the assembly process.

Description

Technical Field

[0001] This invention relates to the field of plastic recycling equipment technology, specifically to an energy-saving vertical injection molding machine based on servo drive. Background Technology

[0002] In the field of injection molding technology, the recycling of plastic waste has become an important development direction for energy conservation and environmental protection. Especially in the production of electronic component casings, the resource utilization of recycled plastics can significantly reduce production costs. However, recycled plastics are prone to being mixed with moisture and volatiles during the recycling process, and their thermal stability deteriorates and their adhesion fluctuates greatly after multiple heat treatments. This leads to many bottlenecks in the processing of such raw materials by existing vertical injection molding machines.

[0003] On the one hand, after the recycled plastic melt cools and solidifies, air bubbles easily form on the inner wall of the electronic component casing, and adhesive burrs easily remain at the lower end. Existing technologies mostly rely on manual trimming or single trimming equipment, which suffers from low efficiency and incomplete burr removal. Moreover, bubble detection is mostly done by sampling at fixed points, resulting in a high rate of missed detection, which directly affects the assembly accuracy and sealing of the finished product. On the other hand, the adhesion between recycled material and mold is unstable. The demolding mechanism of existing vertical injection molding machines is mostly a single ejection design, which can easily lead to damage to the finished product. Furthermore, the detection coverage of outer wall deformation is incomplete and cannot adapt to the easily deformable characteristics of recycled material melt after cooling. In addition, the existing equipment has dispersed and independent processes such as mold closing, demolding, detection, and trimming, which requires multiple machines to work together. This not only results in high energy consumption but also lacks precise collaborative control for the characteristics of recycled plastics, leading to poor equipment adaptability and difficulty in meeting the industrial production needs of plastic waste recycling. Therefore, we propose an energy-saving vertical injection molding machine based on servo drive. Summary of the Invention

[0004] To overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes an energy-saving vertical injection molding machine based on servo drive.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: an energy-saving vertical injection molding machine based on servo drive, including a support frame, a feed tube is provided at the upper front end of the support frame, a fixed plate is fixedly connected at the lower front end of the support frame, four guide rods are fixedly connected to the upper end of the fixed plate, a baffle is slidably connected to the outer sides of the four guide rods, a mounting plate is fixedly connected to the upper end of the baffle, a lifting mechanism for demolding is provided at the upper end of the mounting plate, a punch is slidably connected to the outer sides of the four guide rods, a spring is provided at the upper end of the mounting plate, one end of the spring is fixedly connected to the mounting plate, the other end of the spring is fixedly connected to the punch, a concave mold is fixedly connected to the outer sides of the four guide rods, the upper end of the concave mold is fixedly connected to the feed tube, the ends of the punch and concave molds that are close to each other fit together, a cylinder is installed at the lower end of the fixed plate, and the output shaft of the cylinder is fixedly connected to the baffle.

[0006] Preferably, the lifting mechanism includes a rotating component for lifting the finished product, and the lifting mechanism also includes an unfolding component for detecting the exterior of the finished product.

[0007] Preferably, the rotating assembly includes a plurality of first electric telescopic rods, the lower end of the first electric telescopic rods is fixedly connected to the mounting plate, the outer side of the first electric telescopic rods passes through the punch, the output shaft of the first electric telescopic rods is fixedly connected to a round shaft frame, the inner side of the round shaft frame is provided with a first motor, the output shaft of the first motor is fixedly connected to a cavity shaft, and the outer side of the cavity shaft is provided with a plurality of sliding grooves.

[0008] Preferably, a rotating plate is fixedly connected to the inner side of the cavity shaft, a sliding rod is fixedly connected to the upper end of the rotating plate, a top plate is fixedly connected to the upper end of the sliding rod, and a pressure sensor is provided on the inner side of the top plate.

[0009] Preferably, the unfolding assembly includes two second electric telescopic rods, which are disposed at the upper end of the rotating plate. The output shafts of the two second electric telescopic rods are fixedly connected to a movable sleeve. The movable sleeve is slidably connected to the outside of the slide rod. The outside of the movable sleeve is rotatably connected to a plurality of first rotating rods via a rotating shaft. The other end of the first rotating rod is rotatably connected to a second rotating rod via a rotating shaft. The upper ends of the plurality of second rotating rods are rotatably connected to a fixed sleeve via a rotating shaft. The fixed sleeve is fixedly connected to the outside of the slide rod.

[0010] Preferably, each of the other ends of the plurality of second rotating rods is provided with an infrared sensor, and the infrared sensor is provided with a high-temperature resistant shell.

[0011] Preferably, the inner side of the lifting mechanism is provided with a maintenance mechanism for processing the finished product. The maintenance mechanism includes a positioning component for positioning the position below the finished product, and the maintenance mechanism also includes a trimming component for detecting the interior of the finished product.

[0012] Preferably, the positioning component includes an I-shaped rod fixedly connected to the second rotating rod, a rack at the upper end of the I-shaped rod, a movable box slidably connected to the outer side of the I-shaped rod, two sets of symmetrical rollers on the inner side of the movable box, the rollers slidably connected to the inner side of the groove of the I-shaped rod, a gear rotatably connected to the inner side of the rollers, a second motor mounted at the front end of the rollers, the output shaft of the second motor fixedly connected to the gear, and the outer side of the gear meshing with the rack.

[0013] Preferably, the trimming assembly includes a third motor mounted on one side of the moving box, the output shaft of the third motor being fixedly connected to an assembly tube, and multiple industrial cameras being arranged at the upper end of the assembly tube.

[0014] Preferably, two symmetrical heating tubes are installed at the front end of the assembly tube, a temperature sensor is provided on the inner side of the heating tube, a fixing plate is provided at the front end of each of the two heating tubes, and an electric heating wire is provided on the side of the two fixing plates that are close to each other.

[0015] Compared with the prior art, the present invention provides an energy-saving vertical injection molding machine based on servo drive, which has the following beneficial effects: 1. Multiple industrial cameras in the trimming assembly can perform a full-range scan of the inner wall of the electronic component housing, accurately identifying air bubbles and cavities caused by moisture and volatiles in the recycled material melt, preventing defective products from entering the assembly process; at the same time, the heating tube, in conjunction with a temperature sensor, precisely controls the temperature of the heating wire, adapting to the poor thermal stability of recycled plastics, and removing burrs adhering to the lower end without dead angles during the finished product rotation process, ensuring that the finished product edge is flat and meets the assembly accuracy requirements. This effectively solves the problems of low efficiency of manual trimming, incomplete burr removal, and assembly jamming and poor sealing caused by missed bubble detection in existing technologies, accurately solving defects in recycled plastic finished products and ensuring assembly reliability.

[0016] 2. When the top plate is ejected by the first electric telescopic rod, the pressure sensor monitors the ejection pressure in real time to prevent abnormal adhesion from causing damage to the finished product. The first motor drives the top plate to rotate, completely eliminating the risk of adhesion between the recycled material finished product and the demolding components. After the linkage mechanism of the unfolding component drives the infrared sensor to unfold horizontally, it rotates circumferentially with the cavity shaft to achieve all-round deformation detection of the outer wall of the finished product, adapting to the easy deformation characteristics of the recycled material melt after cooling. Compared with the single demolding method and fixed point detection in the existing technology, this design significantly reduces the finished product damage rate and defect missed detection rate, and significantly improves the pass rate of recycled plastic finished products.

[0017] 3. This invention employs a servo drive system for coordinated control of various mechanisms: processes such as mold closing, demolding, inspection, and trimming all utilize servo drives to achieve precise action switching, avoiding unnecessary energy consumption and meeting energy-saving design requirements. Simultaneously, each core component is optimized for the characteristics of recycled plastics: the pressure monitoring on the top plate adapts to fluctuations in the adhesive force of recycled materials, the temperature sensor addresses the poor thermal stability of recycled materials, and the roller and rack-and-pinion transmission ensures precise positioning, effectively addressing the issue of unstable performance of recycled materials. Furthermore, the overall mechanism integrates demolding, inspection, and trimming functions, reducing process transfers and lowering the risk of secondary damage to the finished recycled material during transport. Compared to the existing multi-equipment, step-by-step operation mode, this not only improves production efficiency but also further enhances the adaptability to recycled plastic raw materials, facilitating the industrial-scale promotion of plastic recycling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of part of the structure of the present invention; Figure 3 This is a schematic diagram of a portion of the lifting mechanism of the present invention; Figure 4 This is a cross-sectional view of a portion of the lifting mechanism of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of a portion of the lifting mechanism of the present invention. Figure 2 ; Figure 6 This is an enlarged schematic diagram of a portion of the maintenance mechanism of the present invention; Figure 7 This is a cross-sectional schematic diagram of a portion of the maintenance mechanism of the present invention; Figure 8 This is a schematic diagram of a portion of the trimming component of the present invention; Figure 9 This is a cross-sectional schematic diagram of the trimming component of the present invention.

[0019] In the diagram: 1. Bracket; 2. Feed pipe; 3. Fixing plate; 4. Cylinder; 5. Guide rod; 6. Baffle; 7. Mounting plate; 8. Lifting mechanism; 81. Rotating assembly; 811. First electric telescopic rod; 812. Round shaft frame; 813. First motor; 814. Cavity shaft; 815. Rotating plate; 816. Slide rod; 817. Top plate; 82. Unfolding assembly; 821. Second electric telescopic rod; 822. Moving sleeve; 823. First rotating rod ; 824, Second rotating rod; 825, Infrared sensor; 826, Fixed sleeve; 9, Maintenance mechanism; 91, Positioning assembly; 911, I-shaped rod; 912, Moving box; 913, Roller; 914, Gear; 915, Second motor; 92, Trimming assembly; 921, Third motor; 922, Assembly tube; 923, Heating tube; 924, Fixing plate; 925, Heating wire; 10, Punch mold; 11, Concave mold; 12, Spring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] The following electrical components are all electrically connected via an external PLC controller.

[0022] Please see Figures 1-9 An energy-saving vertical injection molding machine based on servo drive includes a support 1. A feed tube 2 is provided at the upper front end of the support 1. A fixing plate 3 is fixedly connected at the lower front end of the support 1. Four guide rods 5 are fixedly connected to the upper end of the fixing plate 3. A baffle 6 is slidably connected to the outer side of the four guide rods 5. A mounting plate 7 is fixedly connected to the upper end of the baffle 6. A lifting mechanism 8 for demolding is provided at the upper end of the mounting plate 7. A punch 10 is slidably connected to the outer side of the four guide rods 5. A spring 12 is provided at the upper end of the mounting plate 7. One end of the spring 12 is fixedly connected to the mounting plate 7, and the other end of the spring 12 is fixedly connected to the punch 10. A concave mold 11 is fixedly connected to the outer side of the four guide rods 5. The upper end of the concave mold 11 is fixedly connected to the feed tube 2. The ends of the punch 10 and the concave mold 11 that are close to each other fit together. A cylinder 4 is installed at the lower end of the fixing plate 3. The output shaft of the cylinder 4 is fixedly connected to the baffle 6.

[0023] In this embodiment, the lifting mechanism 8 includes a rotating component 81 for lifting the finished product, and the lifting mechanism 8 also includes an unfolding component 82 for detecting the exterior of the finished product.

[0024] Specifically, the lifting mechanism 8, as the core mechanism of the vertical injection molding machine adapted to the processing of recycled plastic products, plays a key role in achieving efficient demolding of electronic component shells, external defect detection, and pre-positioning for subsequent maintenance operations. The rotating component 81 is mainly responsible for lifting the recycled plastic products on the punch 10 and separating them from the mold. At the same time, the rotation prevents the finished products from sticking to the demolding parts, ensuring the integrity of demolding. The unfolding component 82 is used to drive the detection components to unfold to the designated detection position, and to perform all-round defect detection on the outer wall of the recycled plastic products, adapting to the easily deformable characteristics of recycled materials.

[0025] In this embodiment, the rotating assembly 81 includes a plurality of first electric telescopic rods 811. The lower end of the first electric telescopic rod 811 is fixedly connected to the mounting plate 7. The outer side of the first electric telescopic rod 811 passes through the punch 10. The output shaft of the first electric telescopic rod 811 is fixedly connected to a round shaft frame 812. A first motor 813 is provided on the inner side of the round shaft frame 812. The output shaft of the first motor 813 is fixedly connected to a hollow shaft 814. Multiple sets of sliding grooves are opened on the outer side of the hollow shaft 814.

[0026] Specifically, the core function of the multiple first electric telescopic rods 811 in the rotating assembly 81 is to provide axial driving force, driving the top plate 817 to move up and down to achieve the ejection and demolding of the finished product. The installation method of the rods through the punch 10 ensures the precise guidance of the ejection action. The round shaft frame 812 is used to fix the first motor 813, providing a stable support foundation for the motor. The first motor 813, as the rotation power source, drives the cavity shaft 814 to rotate, thereby driving the top plate 817 and the subsequent unfolding assembly 82 to rotate synchronously. The cavity shaft 814 is not only used to transmit the rotational power of the first motor 813, but the multiple sets of sliding grooves opened on its outer side also provide a channel for the second rotating rod 824 of the unfolding assembly 82 to unfold and retract, avoiding motion interference.

[0027] In this embodiment, a rotating plate 815 is fixedly connected to the inner side of the cavity shaft 814, a sliding rod 816 is fixedly connected to the upper end of the rotating plate 815, a top plate 817 is fixedly connected to the upper end of the sliding rod 816, and a pressure sensor is provided on the inner side of the top plate 817.

[0028] Specifically, the rotating plate 815 inside the cavity shaft 814 is used to fix and connect the slide rod 816, and at the same time transmit the rotational power of the cavity shaft 814 to the slide rod 816 and the top plate 817; the slide rod 816 provides sliding guidance for the movable sleeve 822 on the one hand, ensuring the smooth movement of the unfolding component 82, and on the other hand, it is used to fix and support the top plate 817 and fix the sleeve 826; the top plate 817 is used to seal the through hole of the punch 10 when the mold is closed to prevent leakage of recycled plastic melt, and is used to lift the finished product when demolding to achieve separation of the finished product from the punch 10; the pressure sensor inside the top plate 817 is used to monitor the ejection pressure in real time to avoid damage to the finished product due to abnormal adhesion between the recycled material and the mold, and to ensure the appearance integrity of the recycled plastic finished product.

[0029] In this embodiment, the unfolding assembly 82 includes two second electric telescopic rods 821. The second electric telescopic rods 821 are disposed on the upper end of the rotating plate 815. The output shafts of the two second electric telescopic rods 821 are fixedly connected to a movable sleeve 822. The movable sleeve 822 is slidably connected to the outside of the slide rod 816. The outside of the movable sleeve 822 is rotatably connected to a plurality of first rotating rods 823 via a rotating shaft. The other end of the first rotating rod 823 is rotatably connected to a second rotating rod 824 via a rotating shaft. The upper ends of the plurality of second rotating rods 824 are rotatably connected to a fixed sleeve 826 via a rotating shaft. The fixed sleeve 826 is fixedly connected to the outside of the slide rod 816.

[0030] Specifically, in the unfolding assembly 82, two second electric telescopic rods 821 work together to provide axial driving force, driving the movable sleeve 822 to slide up and down along the slide bar 816, providing power for the unfolding and retraction of the linkage mechanism; the movable sleeve 822 is used to connect and drive multiple first rotating rods 823 to move synchronously, realizing the attitude switching of the linkage mechanism through its sliding action; the multiple first rotating rods 823 serve as transmission links, converting the linear motion of the movable sleeve 822 into the rotational motion of the second rotating rod 824, realizing the unfolding and retraction of the second rotating rod 824; the multiple second rotating rods 824 are used to install infrared sensors 825, which remain horizontal with the finished product after unfolding, providing a stable mounting carrier for sensor detection; the fixed sleeve 826 is fixedly connected to the outside of the slide bar 816, serving as the rotation fulcrum of the second rotating rod 824, ensuring the precise controllability of the unfolding and retraction actions of the second rotating rod 824.

[0031] In this embodiment, an infrared sensor 825 is provided at the other end of each of the multiple second rotating rods 824, and a high-temperature resistant shell is provided on the outside of the infrared sensor 825.

[0032] Specifically, the infrared sensor 825 at the other end of the multiple second rotating rods 824 is used to perform all-round scanning and detection on the outer wall of the finished electronic component shell made of recycled plastic. The detection data is used to determine whether there are deformation defects in the finished product, which is adapted to the characteristic that the recycled material melt is easy to deform after cooling. The high-temperature resistant shell on the outside of the infrared sensor 825 is used to resist the residual heat after the finished product is demolded, so as to avoid the high temperature environment from affecting the detection accuracy and service life of the sensor and ensure the stability of the detection operation.

[0033] In this embodiment, a maintenance mechanism 9 for processing finished products is provided on the inner side of the lifting mechanism 8. The maintenance mechanism 9 includes a positioning component 91 for positioning the position below the finished product, and a trimming component 92 for detecting the inside of the finished product.

[0034] Specifically, the maintenance mechanism 9 is located inside the lifting mechanism 8. Its core function is to position the recycled plastic finished product after demolding, detect internal defects, and remove burrs, thus solving the problem of bubbles and burrs easily generated in the recycled material finished product. The positioning component 91 is used to drive the trimming component 92 to be accurately positioned at the designated working position below the finished product, ensuring the accuracy of subsequent inspection and trimming actions. The trimming component 92 also has the functions of detecting defects on the inner wall of the finished product and removing burrs, realizing the integration of inspection and processing, and improving the pass rate of recycled plastic finished products.

[0035] In this embodiment, the positioning component 91 includes an I-shaped rod 911 fixedly connected to the second rotating rod 824. A rack is provided at the upper end of the I-shaped rod 911. A movable box 912 is slidably connected to the outer side of the I-shaped rod 911. Two sets of symmetrical rollers 913 are provided on the inner side of the movable box 912. The rollers 913 are slidably connected to the inner side of the groove of the I-shaped rod 911. A gear 914 is rotatably connected to the inner side of the rollers 913. A second motor 915 is installed at the front end of the rollers 913. The output shaft of the second motor 915 is fixedly connected to the gear 914. The outer side of the gear 914 is meshed with the rack.

[0036] Specifically, in the positioning assembly 91, the I-shaped rod 911 is fixedly connected to the second rotating rod 824, providing the mounting base and sliding guide for the movable box 912. The rack and pinion at its upper end engage with the gear 914 to achieve transmission. The movable box 912 is used to install the trimming assembly 92, driving the trimming assembly 92 to move along the I-shaped rod 911 to adjust the working position. Two sets of symmetrical rollers 913 are slidably connected to the inner side of the groove of the I-shaped rod 911 to reduce the sliding friction between the movable box 912 and the I-shaped rod 911, ensuring the smooth movement of the movable box 912. The gear 914 meshes with the rack and pinion of the I-shaped rod 911, converting the rotational power of the second motor 915 into the linear motion of the movable box 912. The second motor 915 serves as the power source for the positioning assembly 91, driving the gear 914 to rotate and providing power for the movement of the movable box 912.

[0037] In this embodiment, the trimming component 92 includes a third motor 921 installed on one side of the moving box 912. The output shaft of the third motor 921 is fixedly connected to an assembly tube 922, and multiple industrial cameras are arranged at the upper end of the assembly tube 922.

[0038] Specifically, the third motor 921 in the trimming assembly 92 is used to drive the assembly tube 922 to rotate, realizing the attitude switching of the assembly tube 922 (parallel / perpendicular to the I-beam 911), adapting to different spatial requirements of inspection and trimming operations; the assembly tube 922 is used to install multiple industrial cameras, heating tubes 923 and related components, providing an integrated mounting carrier for inspection and trimming components; multiple industrial cameras are arranged at the upper end of the assembly tube 922 to perform comprehensive scanning inspection of the inner wall of the recycled plastic finished product, accurately identify bubble defects caused by moisture and volatiles in the recycled material melt, and determine whether the finished product is qualified.

[0039] In this embodiment, two symmetrical heating tubes 923 are installed at the front end of the assembly tube 922. A temperature sensor is provided inside the heating tube 923. A fixing plate 924 is provided at the front end of each of the two heating tubes 923. A heating wire 925 is provided on the side of the two fixing plates 924 that are close to each other.

[0040] Specifically, the two symmetrical heating tubes 923 at the front end of the assembly tube 922 are used to provide heat energy to the heating wire 925, thereby raising the temperature of the heating wire 925 and adapting to the poor thermal stability of recycled plastics. The temperature sensor inside the heating tube 923 is used to monitor the heating temperature of the heating wire 925 in real time, avoiding excessively high temperatures that could cause the recycled material to melt excessively or excessively low temperatures that could not effectively remove burrs, thus ensuring the quality of trimming. The two fixing plates 924 are used to fix the heating wire 925, ensuring the installation stability and working posture of the heating wire 925. The heating wire 925 is used to fit the lower end of the recycled plastic product, accurately removing the burrs generated during the product molding process. Combined with the rotation of the cavity shaft 814, it achieves trimming without dead angles, improving the appearance and assembly accuracy of the recycled plastic product.

[0041] Working principle: During use, firstly, the cylinder 4 at the lower end of the fixed plate 3 is activated. Under the coordinated control of the servo drive system, its output shaft precisely drives the baffle 6 to move smoothly upward along the guide rod 5. The baffle 6 synchronously drives the mounting plate 7 to move in the same direction. The mounting plate 7 transmits pre-tightening force through the spring 12, pushing the punch 10 to slide along the guide rod 5 and precisely fit with the concave mold 11 to achieve mold closing. Subsequently, the mounting plate 7 continues to rise and compress the spring 12, so that the top plate 817 tightly seals the through hole of the punch 10 to prevent melt leakage during subsequent injection molding. Next, the feed pipe 2 transports the recycled plastic raw material to the plasticizing area corresponding to the cavity enclosed by the concave mold 11 and the punch 10. After plasticizing by the preset process, a melt is formed. The melt is then injected into the cavity between the punch 10 and the concave mold 11. After the melt cools and solidifies to form the finished electronic component shell, the cylinder 4 drives the baffle 6 to move in the opposite direction, driving the punch 10 to reset and achieve mold opening. At this point, multiple finished electronic component housings are still placed on the upper end of the punch 10, and the finished products are connected together by residual connecting ribs after the recycled plastic melt has cooled. The first electric telescopic rod 811 is activated, and its output shaft drives the top plate 817 to rise. Multiple top plates 817 respectively lift up each finished electronic component housing, so that the finished product is separated from the punch 10 and the initial demolding is completed. The pressure sensor inside the top plate 817 monitors the ejection pressure in real time to avoid damage to the finished product due to abnormal adhesion between the recycled material and the mold. Then, the first motor 813 in the round shaft frame 812 is activated. The output shaft of the first motor 813 drives the cavity shaft 814 to rotate. The cavity shaft 814 drives the top plate 817 to rotate synchronously through the rotating plate 815 and the sliding rod 816. By using the friction between the contact surface of the top plate 817 and the finished electronic component housing, the top plate 817 is completely misaligned with the finished product, and the adhesion problem caused by the stickiness of the recycled material is completely avoided. Then, the two second electric telescopic rods 821 on the upper end of the rotating plate 815 are activated. The output shafts of the two second electric telescopic rods 821 synchronously drive the moving sleeve 822 to slide upward along the slide rod 816. The moving sleeve 822 drives multiple first rotating rods 823 to move synchronously. The first rotating rods 823 drive the second rotating rods 824 through the rotating shaft transmission. The second rotating rods 824 unfold outward with the rotating shaft connected to the fixed sleeve 826 as the axis. During the unfolding process, they pass through the sliding groove on the outside of the cavity shaft 814, and finally keep the second rotating rods 824 in a horizontal state with the finished electronic component housing above. Under the continuous drive of the first motor 813, the cavity shaft 814 drives the second rotating rods 824 to rotate in a circle. The infrared sensors 825 at the ends of multiple second rotating rods 824 synchronously scan and detect the outer wall of the finished electronic component housing in all directions. The high-temperature resistant shell on the outside of the infrared sensor 825 can resist the residual heat of the finished product. Combined with the detection data of each sensor, it is possible to accurately determine whether there are deformation defects in the finished product formed after the recycled plastic melt has cooled. After the test is completed, the second motor 915 is started. The output shaft of the second motor 915 drives the gear 914 to rotate. The gear 914 meshes with the rack at the upper end of the I-shaped rod 911, and cooperates with the roller 913 to slide in the guide groove of the I-shaped rod 911, driving the moving box 912 to move smoothly along the I-shaped rod 911, effectively reducing the friction of movement. The moving box 912 simultaneously drives the assembly tube 922 of the trimming assembly 92 to move away from the groove of the cavity shaft 814 until the assembly tube 922 and the cavity shaft 814 are completely misaligned to avoid interference in subsequent actions. Then, the third motor 921 is started. The output shaft of the third motor 921 drives the assembly tube 922 to rotate 90 degrees, so that the assembly tube 922 is perpendicular to the I-shaped rod 911. Under the continuous drive of the second motor 915, the moving box 912 drives the assembly tube 922 to move back and forth along the I-shaped rod 911. Multiple industrial cameras arranged at the upper end of the assembly tube 922 simultaneously perform comprehensive inspection of the inner wall of the finished electronic component shell, accurately identify bubble defects caused by moisture and volatiles in the recycled material melt, and thus determine whether the finished product is qualified. During the reciprocating movement of the assembly tube 922, the heating wire 925 is simultaneously driven to move closer to the lower end of the finished electronic component casing. The heating tube 923 outputs heat energy to heat the heating wire 925. The temperature sensor inside the heating tube 923 provides real-time temperature feedback to avoid excessive melting of the recycled material product due to excessive temperature or ineffective burr removal due to excessively low temperature, thus adapting to the poor thermal stability of recycled plastics. When the heating wire 925 connected to the fixing plate 924 is attached to the lower end of the finished product, it accurately removes the burrs generated during the molding process of the recycled material product. At the same time, under the rotation of the cavity shaft 814 driven by the first motor 813, the finished product rotates synchronously, ensuring that the heating wire 925 completes the trimming operation without any dead angles. After all processes are completed, under the coordinated control of the servo drive system, the rotating component 81 and unfolding component 82 of the lifting mechanism 8, and the positioning component 91 and trimming component 92 of the maintenance mechanism 9 are sequentially reset to their initial working positions, reducing ineffective energy consumption and preparing for the next round of injection molding production using recycled plastic raw materials.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving vertical injection molding machine based on servo drive, comprising a support frame (1), characterized in that: A feed tube (2) is provided near the upper front end of the bracket (1). A fixing plate (3) is fixedly connected near the lower front end of the bracket (1). Four guide rods (5) are fixedly connected to the upper end of the fixing plate (3). A baffle (6) is slidably connected to the outer sides of the four guide rods (5). A mounting plate (7) is fixedly connected to the upper end of the baffle (6). A lifting mechanism (8) for demolding is provided at the upper end of the mounting plate (7). A punch (10) is slidably connected to the outer sides of the four guide rods (5). A spring (12) is provided at the upper end of the plate (7). One end of the spring (12) is fixedly connected to the mounting plate (7), and the other end of the spring (12) is fixedly connected to the punch (10). A concave die (11) is fixedly connected to the outer side of the four guide rods (5). The upper end of the concave die (11) is fixedly connected to the feed tube (2). The ends of the punch (10) and the concave die (11) that are close to each other fit together. A cylinder (4) is installed at the lower end of the fixing plate (3). The output shaft of the cylinder (4) is fixedly connected to the baffle (6). The lifting mechanism (8) includes a rotating assembly (81) for lifting the finished product, and the lifting mechanism (8) also includes an unfolding assembly (82) for detecting the exterior of the finished product. The rotating assembly (81) includes a plurality of first electric telescopic rods (811). The lower end of the first electric telescopic rod (811) is fixedly connected to the mounting plate (7). The outer side of the first electric telescopic rod (811) passes through the punch (10). The output shaft of the first electric telescopic rod (811) is fixedly connected to a round shaft frame (812). The inner side of the round shaft frame (812) is provided with a first motor (813). The output shaft of the first motor (813) is fixedly connected to a cavity shaft (814). The outer side of the cavity shaft (814) has a plurality of sliding grooves. A rotating plate (815) is fixedly connected to the inner side of the cavity shaft (814), a sliding rod (816) is fixedly connected to the upper end of the rotating plate (815), a top plate (817) is fixedly connected to the upper end of the sliding rod (816), and a pressure sensor is provided on the inner side of the top plate (817). The unfolding assembly (82) includes two second electric telescopic rods (821), which are disposed on the upper end of the rotating plate (815). The output shafts of the two second electric telescopic rods (821) are fixedly connected to a movable sleeve (822). The movable sleeve (822) is slidably connected to the outside of the slide rod (816). The outside of the movable sleeve (822) is rotatably connected to a plurality of first rotating rods (823) via a rotating shaft. The other end of the first rotating rods (823) is rotatably connected to a second rotating rod (824) via a rotating shaft. The upper ends of the plurality of second rotating rods (824) are rotatably connected to a fixed sleeve (826) via a rotating shaft. The fixed sleeve (826) is fixedly connected to the outside of the slide rod (816). Each of the second rotating rods (824) is provided with an infrared sensor (825) at its other end, and the infrared sensor (825) is provided with a high-temperature resistant shell on its outer side.

2. The energy-saving vertical injection molding machine based on servo drive according to claim 1, characterized in that: The lifting mechanism (8) is provided with a maintenance mechanism (9) for processing finished products on its inner side. The maintenance mechanism (9) includes a positioning component (91) for positioning the position below the finished product, and the maintenance mechanism (9) also includes a trimming component (92) for detecting the inside of the finished product.

3. The energy-saving vertical injection molding machine based on servo drive according to claim 2, characterized in that: The positioning component (91) includes an I-shaped rod (911) fixedly connected to a second rotating rod (824). A rack is provided at the upper end of the I-shaped rod (911). A movable box (912) is slidably connected to the outer side of the I-shaped rod (911). Two sets of symmetrical rollers (913) are provided on the inner side of the movable box (912). The rollers (913) are slidably connected to the inner side of the groove of the I-shaped rod (911). A gear (914) is rotatably connected to the inner side of the rollers (913). A second motor (915) is installed at the front end of the rollers (913). The output shaft of the second motor (915) is fixedly connected to the gear (914). The outer side of the gear (914) is meshed with the rack.

4. The energy-saving vertical injection molding machine based on servo drive according to claim 2, characterized in that: The trimming assembly (92) includes a third motor (921) mounted on one side of the moving box (912). The output shaft of the third motor (921) is fixedly connected to an assembly tube (922), and multiple industrial cameras are arranged at the upper end of the assembly tube (922).

5. The energy-saving vertical injection molding machine based on servo drive according to claim 4, characterized in that: The front end of the assembly tube (922) is equipped with two symmetrical heating tubes (923). A temperature sensor is provided on the inner side of the heating tube (923). A fixing plate (924) is provided at the front end of both heating tubes (923). A heating wire (925) is provided on the side of the two fixing plates (924) that are close to each other.

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