Rubber pad injection molding machine with waste recycling function

Abstract

The invention relates to the technical field of injection molding machines, and discloses a rubber pad injection molding machine with a waste recycling function, which comprises an equipment table, an injection molding device and a mold closing device which are fixedly mounted at the top of the equipment table, and a material mixing seat and a hopper which are arranged at the middle section of the injection molding device, the bottom of the hopper is communicated with the mixing tank, and a crushing device is fixedly mounted on the inner wall of the equipment table; through a lifting assembly and a material mixing seat structure in the waste material recycling mechanism, the effects of uniformly mixing raw materials and recycled waste materials and accurately controlling the flow speed are achieved, a lifting pipe of the lifting assembly communicates with a discharging pipe, a discharging opening of the discharging pipe is located in the center of a material mixing groove, broken waste materials and new raw materials can be fully mixed, a redundancy box and a compression assembly are matched, and the waste material recycling efficiency is improved. When discharging is not in time during waste treatment, the redundant box temporarily stores waste, the pressed assembly drives the material blocking sliding block through the connecting rope to change the size of the material conveying opening, and outflow of crushed materials is accurately adjusted.

Description

Technical Field

[0001] This invention relates to the field of injection molding machine technology, and in particular to a rubber pad injection molding machine with waste recycling and reuse function. Background Technology

[0002] In rubber pad injection molding production, mixing and clogging issues have always been key challenges plaguing the industry. Traditional rubber pad injection molding machines struggle to evenly mix raw materials and recycled waste during the mixing process, resulting in inconsistent rubber pad quality and impacting product performance and market competitiveness. Furthermore, the irregular shape and stickiness of the recycled waste easily cause blockages in the material conveying channels. Once blockages occur, they not only require significant time and manpower for unblocking but also lead to production interruptions, reduced efficiency, and increased costs. Therefore, developing a rubber pad injection molding machine that can solve the problems of uneven mixing and clogging, and achieve efficient waste recycling and reuse, is urgently needed.

[0003] Patent CN118269314A discloses an injection molding machine for recycling plastic waste. The machine includes: a machine body with a barrel mounted on it, a feed hopper mounted on the barrel, a feed box fixedly connected to the feed hopper, and a hollow exhaust box fixedly mounted on the barrel; a rotating cover rotatably connected to the feed box, with iron blocks connected to both sides of the cover via hinged rods; and a moving mechanism including a mounting block mounted on the machine body, a fixed plate fixedly connected to the mounting block, and a sliding rod slidably connected to the fixed plate. This patent allows for effective exhaust of gas from the barrel, preventing localized overheating and decomposition of the molten liquid, which could lead to charring and the formation of smears. This ensures the quality of subsequently molded plastic products, avoids a large number of defective products, and significantly improves the yield rate of high-quality plastic products.

[0004] The existing technology has the following drawbacks: The inability to uniformly mix raw materials and recycled waste and control the flow rate is a major problem in rubber pad injection molding production. The generation of waste such as runner solidification, flash, and defective products is unavoidable. However, most existing rubber pad injection molding machines lack effective waste mixing measures, leading to uneven mixing of raw materials and recycled waste. This results in localized areas of concentrated waste or raw materials in the finished rubber pad, with significant differences in color and texture. Simultaneously, flow rate control is also problematic; feeding too quickly causes waste accumulation in some areas, while feeding too slowly leads to insufficient material supply. These conditions severely affect the quality and performance of the rubber pads, making their strength, elasticity, and other indicators unstable, increasing the defect rate, reducing production efficiency, and consequently increasing production costs, weakening the company's economic benefits and market competitiveness.

[0005] The equipment cannot adaptively clear blockages in the waste material flow channels: When recycling and reusing rubber pad waste, the irregular shape and stickiness of the waste material easily cause blockages in the material conveying channels. However, the existing equipment cannot adaptively clear blockages in the waste material flow channels. When a blockage occurs, the equipment cannot detect it automatically, which will cause interruption of material supply to the injection molding machine and production stoppage. Operators have to spend a lot of time to find the blockage location, and even if the blockage is found, it can only be cleared manually. This series of problems leads to a significant reduction in production efficiency and delays in delivery. In addition, frequent manual clearing not only increases labor costs, but may also damage the equipment due to operational errors, further increasing maintenance costs. Summary of the Invention

[0006] Given that existing technologies cannot uniformly mix raw materials and recycled waste and control the flow rate, and cannot adaptively clear blockages in waste flow channels, a rubber pad injection molding machine with waste recycling and reuse functions is proposed.

[0007] This application provides a rubber pad injection molding machine with waste recycling function. Its purpose is to: by setting up a waste recycling mechanism, on the one hand, it can evenly mix raw materials and recycled waste and accurately control the flow rate to avoid local waste or raw material concentration, so that the rubber pad has uniform color and texture, improves performance indicators such as strength and elasticity, reduces the defect rate, and improves production efficiency and product quality. On the other hand, it can adaptively clear blockages in the waste flow channel. Once a blockage occurs, it can automatically clear the blockage, reduce material supply interruption and production stoppage, avoid manual blockage costs and equipment damage risks, and achieve efficient recycling and reuse of waste.

[0008] The technical solution of the present invention is as follows: a rubber pad injection molding machine with waste recycling function, including an equipment platform, an injection molding device and a mold clamping device fixedly installed on the top of the equipment platform, and a mixing seat and a hopper arranged in the middle section of the injection molding device. The inner wall of the mixing seat is provided with a mixing groove, and the bottom of the hopper is connected to the mixing groove. A crushing device is fixedly installed on the inner wall of the equipment platform. The machine also includes a waste recycling mechanism arranged between the mixing seat and the crushing device. The waste recycling mechanism includes a collection component for collecting crushed waste, a lifting component for mixing crushed waste into raw materials, and a conveying hose installed between the collection component and the lifting component. The lifting assembly includes a lifting pipe fixedly installed on the inner wall of the equipment platform and the mixing seat. The lifting pipe is connected to the conveying hose. The inner wall of the lifting pipe is connected to a discharge pipe. The discharge port of the discharge pipe is located at the center of the mixing tank. A redundancy box is connected to the side of the lifting pipe away from the discharge pipe. A pressure-bearing component is installed inside the redundancy box. The redundancy box is used to temporarily store crushed waste that cannot be discharged in time, and the opening size of the feed inlet of the conveying hose is controlled by the pressure-bearing component.

[0009] By adopting the above scheme and through the waste recycling mechanism, the effective recycling and reuse of rubber mat waste is achieved. Rubber mat waste that would otherwise be treated as waste can be reused in the production process after a series of treatments such as crushing, collection, and lifting. This greatly reduces the dependence on new raw materials, improves resource utilization, and conforms to the environmental protection concept of sustainable development. Among them, the discharge port of the discharge pipe is located in the center of the mixing tank, which can ensure that the crushed waste and new raw materials are mixed evenly, which helps to ensure the stability and consistency of rubber mat product quality. The setting of redundant box and pressure component ensures the stable operation of equipment. When there is a situation where the discharge is not timely during the waste processing, the redundant box can temporarily store the waste, and the pressure component can automatically adjust the size of the feed port, avoiding equipment blockage or shutdown due to waste accumulation, improving the production efficiency of the equipment, and ensuring the continuity and stability of production.

[0010] Furthermore, a lifting screw is rotatably connected to the inner wall of the lifting pipe, and a drive motor is connected to the end of the lifting screw away from the unloading pipe. The drive motor is installed at the bottom of the equipment platform.

[0011] Furthermore, the collection assembly includes a material collection box installed at the bottom of the crushing device, a material filter plate installed between the material collection box and the crushing device, a material conveying port opened on the inner wall of the material collection box, the material collection box and the material conveying hose are connected through the material conveying port, and an opening and closing assembly is provided inside the material collection box.

[0012] By adopting the above scheme, the waste conveying process is made more flexible and controllable through the set collection and opening / closing components. During the production process, the outflow of fragments can be adjusted by the opening / closing components according to the amount of waste collected, which improves the adaptability and stability of the equipment and avoids the adverse effects of excessive waste conveying on production, thus further ensuring the continuity and stability of production.

[0013] Furthermore, the opening and closing assembly includes a baffle fixedly connected to the inner wall of the scrap collection box. The baffle is located above the feed inlet. A baffle slider is slidably connected to the inner wall of the baffle. A first telescopic spring is connected between the upper part of the baffle slider and the inner wall of the baffle. A connecting rope is connected to the top of the baffle slider.

[0014] Furthermore, the pressure-bearing component includes a pressure groove formed on the inner wall of the redundant box and a support groove formed on the inner wall of the equipment platform. A pressure block is slidably connected to the inner wall of the pressure groove, and a push rod is connected to the bottom of the pressure block. A third telescopic spring is connected between the bottom of the push rod and the inner wall of the support groove. The end of the connecting rope away from the material blocking slider passes through the equipment platform and is fixedly connected to the bottom of the push rod.

[0015] By adopting the above scheme, the speed and flow rate of the crushed material flowing out of the crushed material collection box can be controlled according to the actual situation through the opening and closing components and the pressure-bearing components. When the pressing block is under pressure, the connecting rope drives the material blocking slider to slide, changing the opening size of the feed port, thereby achieving precise adjustment of the crushed material flow. In addition, the buffering and reset effect of the telescopic spring reduces the impact and vibration of the equipment during operation, ensuring the stable operation of the equipment. The first telescopic spring and the third telescopic spring can absorb and disperse external forces, preventing the equipment from being damaged by instantaneous pressure changes and extending the service life of the equipment.

[0016] Furthermore, an inclined flow platform is fixedly connected to the inner wall of the equipment platform, the lower surface of the conveying hose is in close contact with the inclined surface of the inclined flow platform, the inlet of the conveying hose is higher than the outlet, and a blockage clearing component is provided above the conveying hose.

[0017] Furthermore, the unblocking assembly includes an extrusion device and a fixing frame fixedly connected to the inner wall of the equipment platform, and the output end of the extrusion device abuts against the upper surface of the conveying hose.

[0018] Furthermore, a telescopic cylinder is slidably connected to the inner wall of the fixed frame, and a second telescopic spring is fixedly connected between the top of the telescopic cylinder and the inner wall of the fixed frame. A trigger probe is connected to the output end of the telescopic cylinder, and a trigger switch is provided at the end of the path of the trigger probe. The trigger switch is installed on the inner wall of the equipment platform. When the trigger probe passes through the material conveying hose and contacts the trigger switch, the extrusion device is triggered to extrude the material conveying hose.

[0019] By adopting the above solution, through the setting of the inclined flow platform and the unblocking component, the feed inlet of the conveying hose is higher than the discharge outlet and closely attached to the inclined surface of the inclined flow platform. Utilizing gravity, the crushed material can flow naturally downwards during the conveying process, reducing power consumption and lowering the probability of blockage caused by material accumulation. At the same time, the timely handling of conveying hose blockage by the unblocking component reduces the need for manual intervention, lowers the risk of equipment damage caused by blockage, improves the reliability and stability of the entire equipment, and extends the service life of the equipment.

[0020] Furthermore, a limiting platform is fixedly connected to the inner wall of the equipment platform, and a finished product collection frame is slidably connected above the limiting platform. An inclined sliding groove is provided on the inner wall of the limiting platform, and the inclined sliding groove is located below the finished product collection frame.

[0021] Furthermore, a waste recycling frame is installed on the top of the crushing device. The waste in the finished product collection frame enters the crushing device through an inclined chute. When the finished product collection frame is replaced, the remaining waste is manually fed into the crushing device from the waste recycling frame.

[0022] By adopting the above scheme, through the setting of finished product collection boxes and waste recycling boxes, the waste in the finished product collection boxes can automatically enter the crushing device through the inclined chute, so that the waste can be collected and reprocessed in a timely and automatic manner during the operation of the equipment, reducing waste. Moreover, when replacing the finished product collection box, the staff can manually put the remaining waste from the waste recycling box into the crushing device, further ensuring that the waste can be fully recycled and utilized, avoiding waste residue caused by the replacement of the finished product collection box, and making the waste recycling more thorough.

[0023] The beneficial effects of this invention are: The lifting component and mixing seat structure in the waste recycling mechanism play a role in uniformly mixing raw materials and recycled waste and precisely controlling the flow rate. The lifting pipe of the lifting component is connected to the unloading pipe, and the unloading port of the unloading pipe is located in the center of the mixing tank, which can make the crushed waste and new raw materials fully mixed. The redundant box and the pressure-bearing component work together. When the waste is not unloaded in time, the redundant box temporarily stores the waste, and the pressure-bearing component drives the material blocking slider through the connecting rope to change the size of the feed port and precisely adjust the flow of crushed material. This avoids the local concentration of waste or raw materials, makes the rubber pad uniform in color and texture, improves the strength, elasticity and other performance indicators, reduces the defect rate, and improves production efficiency and product quality.

[0024] The specially designed inclined flow platform and unblocking component structure effectively unblock the waste material flow pipeline. The feed hose inlet is higher than the outlet and closely follows the inclined surface of the inclined flow platform, allowing the waste material to flow naturally by gravity, reducing the probability of blockage. In the unblocking component, when the feed hose is blocked, a trigger probe passes through the feed hose and contacts a trigger switch, triggering the extrusion device to squeeze the feed hose. This reduces manual intervention, lowers the risk of equipment damage, avoids supply interruptions and production stoppages, improves the reliability and stability of the equipment, and extends its service life.

[0025] The structure, consisting of a finished product collection box, a limiting platform, an inclined chute, and a waste recycling box, effectively recycles waste. Waste in the finished product collection box automatically enters the crushing device via the inclined chute, enabling timely and automatic waste recycling. When replacing the finished product collection box, workers can manually transfer the remaining waste from the waste recycling box into the crushing device. This reduces waste waste, avoids waste residue caused by replacing the finished product collection box, makes waste recycling more thorough, improves resource utilization, and aligns with the concept of sustainable development. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the waste recycling frame of the present invention; Figure 4 This is a schematic diagram of the waste recycling mechanism of the present invention; Figure 5 This is a schematic diagram of the structure of the collection component of the present invention; Figure 6 This is a schematic diagram of the lifting component of the present invention; Figure 7 This is a schematic diagram of the structure of the unblocking component of the present invention; Figure 8 This is a schematic diagram of the structure of the mixing tank of the present invention; Figure 9 This is a schematic diagram of the structure of the unloading pipe of the present invention; Figure 10 For the present invention Figure 9 Enlarged structural diagram of point A in the middle; Figure 11 This is a schematic diagram of the structure of the pressure-bearing component of the present invention.

[0027] In the picture: 1. Equipment platform; 11. Limiting platform; 12. Inclined chute; 13. Finished product collection frame; 14. Waste recycling frame; 15. Crushing device; 16. Inclined flow platform; 2. Injection molding device; 3. Mixing seat; 31. Mixing trough; 4. Hopper; 5. Waste recycling mechanism; 51. Collection assembly; 511. Crushed material collection box; 512. Crushed material filter plate; 513. Feed port; 52. Opening and closing assembly; 521. Material stop frame; 522. Connecting rope; 523. First telescopic spring; 524. Material stop slider; 53. Material conveying soft... 54. Lifting assembly; 541. Drive motor; 542. Lifting pipe; 543. Lifting screw; 544. Unloading pipe; 545. Redundancy box; 55. Unblocking assembly; 551. Extrusion device; 552. Fixing frame; 553. Second telescopic spring; 554. Telescopic cylinder; 555. Trigger probe; 556. Trigger switch; 56. Pressure-bearing assembly; 561. Lower pressure block; 562. Lower pressure groove; 563. Push rod; 564. Third telescopic spring; 565. Support groove; 6. Mold closing device. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Reference Figure 1 - Figure 11A rubber pad injection molding machine with waste recycling function is provided, including a machine platform 1, an injection molding device 2 and a mold clamping device 6 fixedly installed on the top of the machine platform 1, and a mixing seat 3 and a hopper 4 set in the middle section of the injection molding device 2. The inner wall of the mixing seat 3 is provided with a mixing groove 31, and the bottom of the hopper 4 is connected to the mixing groove 31. A crushing device 15 is fixedly installed on the inner wall of the machine platform 1. The machine also includes a waste recycling mechanism 5 set between the mixing seat 3 and the crushing device 15. The waste recycling mechanism 5 includes a collection component 51 for collecting crushed waste, a lifting component 54 for mixing crushed waste into raw materials, and a conveying hose 53 installed between the collection component 51 and the lifting component 54.

[0030] Reference Figure 4 - Figure 9 The lifting assembly 54 includes a lifting pipe 542 fixedly installed on the inner wall of the equipment platform 1 and the mixing seat 3. The lifting pipe 542 is connected to the conveying hose 53. The inner wall of the lifting pipe 542 is connected to the unloading pipe 544. The unloading port of the unloading pipe 544 is located at the center of the mixing tank 31. The side of the lifting pipe 542 away from the unloading pipe 544 is connected to a redundancy box 545. The redundancy box 545 is equipped with a pressure-bearing assembly 56. The redundancy box 545 is used to temporarily store crushed waste that cannot be unloaded in time, and the opening size of the feed inlet of the conveying hose 53 is controlled by triggering the pressure-bearing assembly 56.

[0031] Specifically, injection molding device 2 is responsible for heating and plasticizing the raw material to prepare for subsequent injection molding; mold closing device 6 is used to realize the opening and closing of the mold, and completes the injection molding of the rubber pad during the mold closing process; the bottom of hopper 4 is connected to mixing tank 31, so that new raw material can smoothly enter mixing tank 31 and fully mix with recycled waste; crushing device 15 can crush the rubber pad waste generated during the production process, turning it into scrap suitable for reuse; the discharge port of discharge pipe 544 is located at the center of mixing tank 31, allowing waste to be evenly mixed into new raw material. This ensures the mixing effect and product quality. The redundant box 545 is used to temporarily store the crushed waste that cannot be discharged from the discharge pipe 544 in time. The redundant box 545 is equipped with a pressure-bearing component 56. When the waste in the redundant box 545 gradually increases and the pressure increases, the pressure-bearing component 56 will be triggered, thereby controlling the opening size of the feed inlet of the conveying hose 53. The diameter of the lifting pipe 542 is larger than the diameter of the conveying hose 53. Even if the redundant box 545 is filled with crushed material, the internal space of the lifting pipe 542 can still temporarily store crushed material as the opening of the feed inlet of the conveying hose 53 becomes smaller.

[0032] The waste recycling mechanism 5 enables the effective recycling and reuse of rubber mat waste. Rubber mat waste that would otherwise be treated as waste can be reused in the production process after a series of treatments including crushing, collection, and lifting. This significantly reduces reliance on new raw materials, improves resource utilization, and aligns with the environmental protection concept of sustainable development. The discharge port of the discharge pipe 544 is located at the center of the mixing tank 31, ensuring uniform mixing of crushed waste and new raw materials, which helps guarantee the stability and consistency of rubber mat product quality. The redundant box 545 and the pressure-bearing component 56 ensure stable equipment operation. When unloading is delayed during waste processing, the redundant box 545 can temporarily store the waste, and the pressure-bearing component 56 can automatically adjust the inlet size, preventing equipment blockage or shutdown due to waste accumulation, improving equipment production efficiency, and ensuring production continuity and stability.

[0033] Reference Figure 4 - Figure 6 A lifting screw 543 is rotatably connected to the inner wall of the lifting pipe 542. The end of the lifting screw 543 away from the unloading pipe 544 is connected to a drive motor 541, which is installed at the bottom of the equipment platform 1. The collection component 51 includes a crushed material collection box 511 installed at the bottom of the crushing device 15. A crushed material filter plate 512 is installed between the crushed material collection box 511 and the crushing device 15. A conveying port 513 is opened on the inner wall of the crushed material collection box 511. The crushed material collection box 511 is connected to the conveying hose 53 through the conveying port 513. An opening and closing component 52 is provided inside the crushed material collection box 511.

[0034] Specifically, the drive motor 541 drives the lifting screw 543 to rotate inside the lifting pipe 542, which can transport the crushed waste upward along the lifting pipe 542; after the crushed material is processed by the crushing device 15, the crushed material filter plate 512 screens out the crushed material that meets the size requirements and enters the crushed material collection box 511; the opening and closing component 52 can control the outflow of crushed material according to the amount of waste collected; the conveying port 513 ensures that the crushed material can smoothly enter the conveying hose 53.

[0035] By setting up the collection component 51 and the opening and closing component 52, the waste material conveying process becomes more flexible and controllable. During the production process, the outflow of broken material is adjusted by the opening and closing component 52 according to the amount of waste material collected, which improves the adaptability and stability of the equipment and avoids adverse effects on production caused by excessive waste material conveying, further ensuring the continuity and stability of production.

[0036] Reference Figure 4 - Figure 11The opening and closing assembly 52 includes a baffle 521 fixedly connected to the inner wall of the scrap collection box 511. The baffle 521 is located above the feed inlet 513. A baffle slider 524 is slidably connected to the inner wall of the baffle 521. A first telescopic spring 523 is connected between the upper part of the baffle slider 524 and the inner wall of the baffle 521. A connecting rope 522 is connected to the top of the baffle slider 524. The pressure assembly 56 includes a pressure groove 562 opened in the inner wall of the redundant box 545 and a support groove 565 opened in the inner wall of the equipment platform 1. A pressure block 561 is slidably connected to the inner wall of the pressure groove 562. A push rod 563 is connected to the bottom of the pressure block 561. A third telescopic spring 564 is connected between the bottom of the push rod 563 and the inner wall of the support groove 565. The end of the connecting rope 522 away from the baffle slider 524 passes through the equipment platform 1 and is fixedly connected to the bottom of the push rod 563.

[0037] By using the opening and closing component 52 and the pressure-bearing component 56, the speed and flow rate of the crushed material flowing out of the crushed material collection box 511 can be controlled according to the actual situation. When the pressing block 561 is under pressure, the connecting rope 522 drives the material blocking slider 524 to slide, changing the opening size of the feed port 513, thereby achieving precise adjustment of the crushed material flow. Furthermore, through the buffering and reset function of the telescopic spring, the impact and vibration of the equipment during operation are reduced, ensuring the stable operation of the equipment. The first telescopic spring 523 and the third telescopic spring 564 can absorb and disperse external forces, preventing the equipment from being damaged due to instantaneous pressure changes and extending the service life of the equipment.

[0038] Reference Figure 4 - Figure 7 An inclined flow platform 16 is fixedly connected to the inner wall of the equipment platform 1. The lower surface of the conveying hose 53 is in close contact with the inclined surface of the inclined flow platform 16. The inlet of the conveying hose 53 is higher than the outlet. A blockage clearing component 55 is provided above the conveying hose 53. The blockage clearing component 55 includes a pressing device 551 and a fixing frame 552 fixedly connected to the inner wall of the equipment platform 1. The output end of the pressing device 551 abuts against the upper surface of the conveying hose 53. A telescopic cylinder 554 is slidably connected to the inner wall of the fixing frame 552. A second telescopic spring 553 is fixedly connected between the top of the telescopic cylinder 554 and the inner wall of the fixing frame 552. A trigger probe 555 is connected to the output end of the telescopic cylinder 554. A trigger switch 556 is provided at the end of the path of the trigger probe 555. The trigger switch 556 is installed on the inner wall of the equipment platform 1. When the trigger probe 555 passes through the conveying hose 53 and contacts the trigger switch 556, the pressing device 551 is triggered to press the conveying hose 53.

[0039] Specifically, the inlet of the conveying hose 53 is higher than the outlet, forming an inclined conveying channel. Gravity allows the material to flow more smoothly within the conveying hose 53, reducing the possibility of blockage. The output end of the extrusion device 551 abuts against the upper surface of the conveying hose 53. When a trigger signal is received, the extrusion device 551 applies pressure evenly to the conveying hose 53, pressing the circular conveying hose 53 into an elliptical shape to resolve any blockage. The trigger probe 555 and the trigger switch 556 are both located at the end of the conveying hose 53, with the trigger switch 556 located at the end of the path of the trigger probe 555. When a blockage occurs in the conveying hose 53, there is no material at the end of the conveying hose 53, allowing the trigger probe 555 to smoothly contact the trigger switch 556, triggering the extrusion device 551 to start and extrude material into the conveying hose 53.

[0040] With the inclined flow platform 16 and the unblocking component 55, the inlet of the conveying hose 53 is higher than the outlet and closely attached to the inclined surface of the inclined flow platform 16. Utilizing gravity, the crushed material can flow naturally downwards during the conveying process, reducing power consumption and lowering the probability of blockage caused by material accumulation. At the same time, the unblocking component 55 promptly handles blockages in the conveying hose 53, reducing the need for manual intervention, lowering the risk of equipment damage due to blockages, improving the reliability and stability of the entire equipment, and extending the service life of the equipment.

[0041] Reference Figure 2 - Figure 4 The inner wall of the equipment platform 1 is also fixedly connected to a limiting platform 11. A finished product collection frame 13 is slidably connected above the limiting platform 11. An inclined slide groove 12 is opened on the inner wall of the limiting platform 11, and the inclined slide groove 12 is located below the finished product collection frame 13. A waste recycling frame 14 is installed on the top of the crushing device 15. The waste in the finished product collection frame 13 enters the crushing device 15 through the inclined slide groove 12. When the finished product collection frame 13 is replaced, the remaining waste is manually put into the crushing device 15 from the waste recycling frame 14.

[0042] With the finished product collection box 13 and the waste recycling box 14, the waste in the finished product collection box 13 can automatically enter the crushing device 15 through the inclined chute 12, so that the waste can be recycled and reprocessed in a timely and automatic manner during the operation of the equipment, reducing waste. When replacing the finished product collection box 13, the staff can manually put the remaining waste from the waste recycling box 14 into the crushing device 15, further ensuring that the waste can be fully recycled and utilized, avoiding waste residue caused by the replacement of the finished product collection box 13, and making the waste recycling more thorough.

[0043] Working principle of the invention: The injection molding device 2 heats the raw material in the hopper 4 and pushes it into the mold closing device 6 for injection molding. The produced rubber pad falls into the finished product collection frame 13. Waste is generated during the production process. The waste in the finished product collection frame 13 is automatically fed into the crushing device 15 through the inclined slide 12 of the limiting table 11 and crushed. At this time, the amount of waste crushed is small. When the finished product collection frame 13 is replaced, the remaining waste can be manually fed from the waste recycling frame 14 into the crushing device 15 for crushing. At this time, the amount of waste crushed is large.

[0044] The crushing device 15 crushes the waste material, and the crushed material enters the crushed material collection box 511 of the collection component 51 through the crushed material filter plate 512. The crushed material filter plate 512 can prevent larger particles of waste material from entering the subsequent stages and ensure the quality of waste material recycling.

[0045] Waste material in the scrap collection box 511 enters the conveying hose 53 through the conveying port 513. The lower surface of the conveying hose 53 is in close contact with the inclined surface of the inclined flow table 16, and the inlet is higher than the outlet. Gravity assists in the conveying of waste material. Then, the drive motor 541 of the lifting assembly 54 drives the lifting screw 543 to rotate, lifting the waste material conveyed by the conveying hose 53 into the lifting pipe 542. The waste material in the lifting pipe 542 falls into the center of the mixing tank 31 through the discharge pipe 544, and is mixed with new raw materials for injection molding production again.

[0046] When there is a small amount of crushed waste, the unloading pipe 544 unloads normally and mixes evenly with the raw materials. When there is a large amount of crushed waste, the waste in the lifting pipe 542 is not unloaded in time, and the waste will enter the redundant box 545. As the amount of waste in the redundant box 545 increases, the waste exerts pressure on the lower pressure block 561, causing it to slide down along the lower pressure groove 562. The push rod 563 moves down accordingly, squeezing the third telescopic spring 564 and loosening the connecting rope 522. Under the action of gravity and the recovery deformation of the first telescopic spring 523, the material blocking slider 524 slides down in the material blocking frame 521, making the opening of the conveying port 513 smaller, thereby reducing the amount of waste entering the conveying hose 53, realizing the control of the waste feeding speed, and ensuring the stable operation of the waste recycling and conveying system.

[0047] Both the trigger probe 555 and the trigger switch 556 are located at the outlet of the conveying hose 53. During the conveying process, the telescopic cylinder 554 pushes the trigger probe 555 in stages. When the conveying hose 53 is not blocked, the trigger probe 555 can only contact the waste material and cannot contact the trigger switch 556 due to the obstruction of the waste material. Under the obstruction of the waste material, the trigger probe 555 also squeezes the second telescopic spring 553 in the opposite direction, causing the telescopic cylinder 554 to slide in the fixed frame 552 without affecting the normal conveying of the waste material.

[0048] When the conveying hose 53 is blocked, there is no waste material at the outlet of the conveying hose 53. The trigger probe 555 contacts the trigger switch 556 when there is no waste material blocking it, triggering the squeezing device 551 to squeeze the conveying hose 53 to clear the blockage and ensure smooth waste material conveying.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A rubber pad injection molding machine with waste recycling function, comprising a machine platform (1), an injection molding device (2) and a mold clamping device (6) fixedly installed on the top of the machine platform (1), and a mixing seat (3) and a hopper (4) arranged in the middle section of the injection molding device (2), wherein the inner wall of the mixing seat (3) is provided with a mixing groove (31), the bottom of the hopper (4) is connected to the mixing groove (31), and a crushing device (15) is fixedly installed on the inner wall of the machine platform (1), characterized in that: It also includes a waste recycling mechanism (5) disposed between the mixing seat (3) and the crushing device (15). The waste recycling mechanism (5) includes a collection component (51) for collecting crushed waste, a lifting component (54) for mixing crushed waste into raw materials, and a conveying hose (53) installed between the collection component (51) and the lifting component (54). The lifting assembly (54) includes a lifting pipe (542) fixedly installed on the inner wall of the equipment platform (1) and the mixing seat (3). The lifting pipe (542) is connected to the conveying hose (53). The inner wall of the lifting pipe (542) is connected to the unloading pipe (544). The unloading port of the unloading pipe (544) is located at the center of the mixing tank (31). The side of the lifting pipe (542) away from the unloading pipe (544) is connected to a redundancy box (545). The inside of the redundancy box (545) is equipped with a pressure-bearing assembly (56). The redundancy box (545) is used to temporarily store crushed waste that cannot be unloaded in time, and the opening size of the feed inlet of the conveying hose (53) is triggered by the pressure-bearing assembly (56).

2. The rubber pad injection molding machine with waste recycling function according to claim 1, characterized in that: The inner wall of the lifting pipe (542) is rotatably connected to a lifting screw (543), and the end of the lifting screw (543) away from the unloading pipe (544) is connected to a drive motor (541), which is installed at the bottom of the equipment platform (1).

3. The rubber pad injection molding machine with waste recycling function according to claim 2, characterized in that: The collection assembly (51) includes a crushed material collection box (511) installed at the bottom of the crushing device (15). A crushed material filter plate (512) is installed between the crushed material collection box (511) and the crushing device (15). A material conveying port (513) is provided on the inner wall of the crushed material collection box (511). The crushed material collection box (511) is connected to the material conveying hose (53) through the material conveying port (513). An opening and closing assembly (52) is provided inside the crushed material collection box (511).

4. The rubber pad injection molding machine with waste recycling function according to claim 3, characterized in that: The opening and closing assembly (52) includes a baffle (521) fixedly connected to the inner wall of the scrap collection box (511). The baffle (521) is located above the feed inlet (513). A baffle slider (524) is slidably connected to the inner wall of the baffle (521). A first telescopic spring (523) is connected between the upper part of the baffle slider (524) and the inner wall of the baffle (521). A connecting rope (522) is connected to the top of the baffle slider (524).

5. The rubber pad injection molding machine with waste recycling function according to claim 4, characterized in that: The pressure-bearing component (56) includes a pressure groove (562) formed on the inner wall of the redundant box (545) and a support groove (565) formed on the inner wall of the equipment platform (1). A pressure block (561) is slidably connected to the inner wall of the pressure groove (562). A push rod (563) is connected to the bottom of the pressure block (561). A third telescopic spring (564) is connected between the bottom of the push rod (563) and the inner wall of the support groove (565). One end of the connecting rope (522) away from the material blocking slider (524) passes through the equipment platform (1) and is fixedly connected to the bottom of the push rod (563).

6. The rubber pad injection molding machine with waste recycling function according to claim 1, characterized in that: The inner wall of the equipment platform (1) is fixedly connected to the inclined flow platform (16), the lower surface of the conveying hose (53) is closely attached to the inclined surface of the inclined flow platform (16), the inlet of the conveying hose (53) is higher than the outlet, and a blockage clearing component (55) is provided above the conveying hose (53).

7. The rubber pad injection molding machine with waste recycling function according to claim 6, characterized in that: The unblocking component (55) includes an extrusion device (551) and a fixing frame (552) fixedly connected to the inner wall of the equipment platform (1). The output end of the extrusion device (551) abuts against the upper surface of the conveying hose (53).

8. The rubber pad injection molding machine with waste recycling function according to claim 7, characterized in that: A telescopic cylinder (554) is slidably connected to the inner wall of the fixed frame (552). A second telescopic spring (553) is fixedly connected between the top of the telescopic cylinder (554) and the inner wall of the fixed frame (552). A trigger probe (555) is connected to the output end of the telescopic cylinder (554). A trigger switch (556) is provided at the end of the path of the trigger probe (555). The trigger switch (556) is installed on the inner wall of the equipment platform (1). When the trigger probe (555) passes through the conveying hose (53) and contacts the trigger switch (556), the extrusion device (551) is triggered to extrude the conveying hose (53).

9. The rubber pad injection molding machine with waste recycling function according to claim 1, characterized in that: The inner wall of the equipment platform (1) is also fixedly connected to a limiting platform (11), and a finished product collection frame (13) is slidably connected above the limiting platform (11). An inclined sliding groove (12) is opened on the inner wall of the limiting platform (11), and the inclined sliding groove (12) is located below the finished product collection frame (13).

10. The rubber pad injection molding machine with waste recycling function according to claim 9, characterized in that: The top of the crushing device (15) is equipped with a waste recycling frame (14). The waste in the finished product collection frame (13) enters the crushing device (15) through the inclined chute (12). When the finished product collection frame (13) is replaced, the remaining waste is manually put into the crushing device (15) from the waste recycling frame (14).

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