Premixing and modifying device for recycled plastic particles of automobile parts

Abstract

The invention relates to the technical field of automobile part processing, and particularly discloses an automobile part recycled plastic particle premixing and modifying device which comprises a base, the top of the base is fixedly connected with a smashing box through a first supporting column, a smashing assembly is installed in the smashing box, and the top of the base is fixedly connected with a mixing cylinder; lifting assemblies are symmetrically mounted on the outer side wall of the mixing barrel, a lifting seat is mounted at the top of the mixing barrel through the lifting assemblies, a stirring assembly is mounted at the top of the lifting seat, transmission shafts are symmetrically and rotationally connected to the bottom of the lifting seat, and stirring rollers are in threaded connection to the bottoms of the transmission shafts through mounting assemblies. The damaged stirring roller can be independently replaced without complex disassembly of the whole device, the maintenance time is greatly shortened, the maintenance difficulty is reduced, the stirring rollers suitable for different formulas or processes can be flexibly switched, and the diversified and batch production requirements of automobile parts are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic recycling, and particularly relates to a premixing and modifying device for recycled plastic particles of automobile parts. BACKGROUND

[0002] With the increasing emphasis on environmental protection and circular economy worldwide, the automobile manufacturing industry is actively promoting the use of recycled plastics to replace virgin plastics in order to reduce carbon footprint and production costs. Recycled plastic particles obtained after recycling, crushing and cleaning of automobile scrap parts (such as bumpers, instrument panels, door panels, etc.) become important raw materials for manufacturing new parts. However, recycled plastics, due to their diverse sources, having undergone one or more processing and use cycles, have far inferior physical properties, chemical stability and batch consistency to virgin plastics. Specifically, recycled plastic particles generally have performance degradation, contain impurities, and have uneven sizes, etc. If they are to be "upcycled" and applied to automobile parts that have strict requirements for mechanical properties and appearance consistency, they must undergo precise premixing and modification treatment.

[0003] An ideal premixing and modification process aims to solve the inherent shortcomings of recycled plastics. The process first needs to crush the recycled plastic particles of different sizes and functional fillers to uniform micron level (e.g. 50-100 μm) through efficient grinding (such as double roller grinding), and achieve physical uniform premixing through dynamic throwing and other methods to eliminate the problem of stratification caused by density and morphology differences. Subsequently, in the modification stage, anti-aging agents, toughening agents, compatibilizers and other additives are precisely added through a high-precision weighing and metering system (such as an accuracy of ±0.5%), and in a high-temperature (such as 180-220℃) melting bin, with the help of efficient shearing, kneading and dispersing components (such as scraper cleaning and circulating crushing), the material melting rate is ensured to be above 95%, and the additive dispersion in the plastic matrix is extremely high (such as 98%), so as to repair and improve the strength, impact toughness and weather resistance of recycled plastics, making their performance comparable or even superior to virgin materials.

[0004] However, the existing technology has obvious shortcomings in achieving the above ideal process. For example, Chinese utility model patent publication number "CN220614577U" discloses a mixing device for plastic particle processing, which realizes material mixing through reciprocating swing, self-rotation of the mixing barrel and rotation of the internal stirring shaft, claiming to improve mixing speed and efficiency.

[0005] The utility model discloses can effectively to the raw material of joining carry out full effective mixing to improve the processing mixing speed and efficiency, and reduce the progress of processing. But the stirring shaft in the long -term operation process, will because with the friction, the collision of plastic particle, auxiliary material and so on material and wear, also can because the corrosion, high temperature and so on factor appear damage, once the trouble, maintenance personnel is difficult to its targeted repair or replacement, can only to the whole stirring system even the device carries out the overall overhaul, not only increase the maintenance difficulty, will because the operation space is limited, leads to the maintenance not thoroughly, shortens the equipment overall life, and the wear or damage of stirring shaft can directly influence the mixing effect of material, after the performance drops, will cause the plastic particle and the uneven mixing of auxiliary material, make the final production's automobile accessory plastic particle performance unstable.

[0006] Therefore, we propose a kind of automobile accessory recycled plastic particle's premixing and modification device to solve the above problems. SUMMARY

[0007] The automobile accessory recycled plastic particle's premixing and modification device is provided to solve the problem that the stirring shaft is worn and damaged due to friction and collision with plastic particles, auxiliary materials and other materials during long-term operation in the background art.

[0008] To achieve the above object, the automobile accessory recycled plastic particle's premixing and modification device is provided, which comprises a base, a pulverizing box fixedly connected to the top of the base by a first support column, a pulverizing assembly installed inside the pulverizing box, a mixing cylinder fixedly connected to the top of the base, a top cover installed on the top of the mixing cylinder, lifting assemblies symmetrically installed on the outer sidewall of the mixing cylinder, a lifting seat installed on the top of the mixing cylinder through the lifting assemblies, a stirring assembly installed on the top of the lifting seat, transmission shafts symmetrically rotatably connected to the bottom of the lifting seat, and stirring rollers threadedly connected to the bottom of the transmission shafts through mounting assemblies. The mounting assembly comprises a rotating column, a second driving gear, a second driven gear, a first threaded hole, a threaded column, a limiting block, a connecting column and a rotating ring, the bottom of the transmission shaft is fixedly connected with a first mounting seat, the top of the first mounting seat is symmetrically and rotatably connected with the rotating column, the top of the rotating column is provided with a first threaded hole, the first threaded hole is threadedly connected with the threaded column, the top of the threaded column is fixedly connected with the limiting block, the outer side wall of the rotating column is fixedly sleeved with the second driven gear, the outer side of the transmission shaft is rotatably sleeved with the second driving gear, the top of the second driving gear is symmetrically and fixedly connected with the connecting column, the outer side of the transmission shaft is rotatably sleeved with the rotating ring, the top end of the connecting column is fixedly connected with the bottom of the rotating ring, the diameter of the second driving gear is greater than that of the second driven gear, the second driving gear and the second driven gear are in mesh with each other, the top of the stirring roller is fixedly connected with a second mounting seat, the top of the second mounting seat is symmetrically provided with a second threaded hole, the threaded column is in threaded connection with the second threaded hole, the maintenance personnel can quickly locate the faulty component, the damaged stirring roller can be replaced alone without complicated disassembly of the whole device, the maintenance time is greatly shortened, the maintenance difficulty is reduced, the equipment can quickly recover to normal operation, the influence of shutdown on the production plan is reduced, different stirring rollers suitable for different formulas or processes can be flexibly switched, the mixing efficiency and uniformity are improved, the material mixing time is reduced, the single-batch production efficiency is improved, and the diversified and batch production requirements of automobile parts are met.

[0009] The outer side wall of the mixing cylinder is fixedly sleeved with a fixed ring, the bottom of the fixed ring is symmetrically and fixedly connected with second supporting columns, the second supporting columns are fixedly connected with the top of the base, the fixed ring is sleeved on the outer side wall of the mixing cylinder, is connected with the base in cooperation with the symmetrically distributed second supporting columns, and forms a stable triangular supporting structure.

[0010] In a further embodiment, the stirring assembly comprises a third driving motor, a first driving gear and a first driven gear, the top of the lifting seat is provided with the third driving motor, the top of the lifting seat is rotatably connected with the first driving gear, the output end of the third driving motor is fixedly connected with the first driving gear, the top of the lifting seat is symmetrically and rotatably connected with the first driven gear, the top end of the transmission shaft is fixedly connected with the bottom of the first driven gear, the diameter of the first driven gear is greater than that of the first driving gear, the first driving gear and the first driven gear are in mesh with each other, the first driving gear and the larger-diameter first driven gear are meshed by the third driving motor, efficient and stable transmission can be realized, high-speed stirring of the roller is realized at low speed of the motor, the structure is compact and symmetrical, maintenance is simple, accurate speed regulation can be realized to adapt to different mixing requirements, and the mixing efficiency and uniformity of the plastic particles of automobile parts are ensured.

[0011] In further embodiments, the lifting assembly comprises a second drive motor, a lead screw, a guide rod, a lifting plate and a connecting rod, the outer wall of the mixing cylinder is symmetrically fixedly connected with a fixed seat, the fixed seat is rotatably connected with the lead screw and fixedly connected with the guide rod, respectively, a second drive motor is installed on the top of the fixed seat, the output end of the second drive motor is fixedly connected with the lead screw, the outer side of the lead screw and the guide rod is sleeved with a lifting plate, the top of the lifting plate is symmetrically fixedly connected with a connecting rod, the top end of the connecting rod is fixedly connected with the bottom of the lifting seat, the lead screw and the lifting plate are threadedly connected, and the guide rod and the lifting plate are slidingly connected, so that the contact position and depth of the stirring roller with the material can be adjusted as needed, the stirring roller can be lowered down when processing high-viscosity materials or when the stirring effect needs to be enhanced, the force acting on the material is increased, the stirring roller can be appropriately raised when processing materials with good flowability, energy waste and material damage caused by excessive stirring are avoided, the adaptability of the equipment to diversified production needs is improved, and the lifting of the stirring roller can change the movement track and mixing mode of the material in the stirring bin, so that the additives and plastic particles are fully and uniformly mixed.

[0012] In further embodiments, the outer wall of the mixing cylinder is symmetrically provided with a guide groove, the side of the lifting plate close to the mixing cylinder is symmetrically fixedly connected with a guide block, the guide block and the guide groove are slidingly connected, the outer side guide groove of the mixing cylinder and the lifting plate guide block are slidingly matched, the movement track of the lifting plate can be accurately limited, the mixing cylinder is prevented from shaking and deviating when lifting, the contact position of the stirring roller with the material is stabilized, the guide structure is wear-resistant and impact-resistant, can adapt to frequent lifting requirements, and the running reliability and mixing uniformity of the device are improved.

[0013] In further embodiments, the crushing assembly comprises a first drive motor, a crushing roller, a feeding valve and a feeding pipe, the crushing box is symmetrically rotatably connected with a crushing roller inside, a first drive motor is symmetrically installed on one side of the crushing box, the output end of the first drive motor is fixedly connected with the crushing roller, a feeding pipe is fixedly connected to the bottom of the crushing box, the other end of the feeding pipe is fixedly connected with the top cover, the inside of the crushing box is communicated with the inside of the mixing cylinder through the feeding pipe, and the feeding valve is installed on the outer side of the feeding pipe, the crushing roller is driven by the symmetric first drive motor to crush the material, the discharging is controlled through the feeding pipe and the feeding valve, the plastic particles can be efficiently broken to a uniform particle size, the crushing and mixing processes are connected through the communication of the mixing cylinder, the feeding amount is accurately controlled, and the subsequent mixing uniformity and production continuity are ensured. A cover plate is rotatably installed on the top of the crushing box, a protruding plate is elongatedly connected to the side of the cover plate, and a top-up piece is connected to the same side of the lifting seat and the protruding plate; The top-up piece comprises a horizontally connected horizontal part and a vertical part, the other end of the vertical part extends to the lower side of the protruding plate, the protruding plate is lifted to open or close the cover plate when the lifting seat is lifted, and a limiting sliding groove is further formed in the side of the vertical part, a pressing block is slidingly connected in the limiting sliding groove, a spring is arranged above the pressing block, and the other end of the spring abuts against the inner top of the limiting sliding groove. The top of the first supporting column is provided with a supporting block for fixing the crushing box, and a control switch for controlling the start and stop of the first driving motor is arranged on the supporting block.

[0014] In a further embodiment, a protruding rod is symmetrically arranged on one of the transmission shafts, and the protruding rod is located at the upper end of the transmission shaft so as not to affect the downward movement of the transmission shaft.

[0015] Compared with the prior art, the present application has the following advantages: Firstly, in the present application, the stirring roller is combined with the second mounting seat and the first mounting seat at the bottom of the transmission shaft, the rotating ring is rotated, the connecting column is controlled to drive the second driving gear to rotate, the second driving gear drives the second driven gear to rotate, thereby rotating the rotating column, and the first threaded hole and the threaded column are in threaded transmission, thereby controlling the threaded column to advance, the threaded column is in threaded connection with the second threaded hole in the second mounting seat, the installation of the stirring roller is completed, the maintenance personnel can quickly locate the faulty component, the damaged stirring roller can be replaced alone without complex disassembly of the entire device, the maintenance time is greatly shortened, the maintenance difficulty is reduced, the equipment can be quickly restored to normal operation, the influence of shutdown on the production plan is reduced, and the stirring roller suitable for different formulas or processes can be flexibly switched, thereby improving the mixing efficiency and uniformity, reducing the material mixing time, improving the single-batch production efficiency, and meeting the diversified and batch production requirements of automobile parts. Secondly, in the present application, the second driving motor is started to control the screw rod to rotate, the screw rod is in threaded transmission with the lifting plate during rotation, thereby controlling the lifting plate to ascend and descend, the lifting plate drives the lifting seat to ascend and descend through the connecting rod, the lifting seat drives the stirring assembly, the transmission shaft and the stirring roller to ascend and descend, the third driving motor is started to control the first driving gear to drive the first driven gear to rotate, thereby controlling the stirring roller to rotate, the ascending and descending of the stirring roller during rotation is completed, the contact position and depth of the stirring roller with the material can be adjusted as needed, the stirring roller can be lowered when processing high-viscosity materials or when the stirring effect needs to be enhanced, the stirring roller can be appropriately raised when processing materials with good flowability, energy waste and material damage caused by excessive stirring are avoided, the adaptability of the equipment to diversified production requirements is improved, and the ascending and descending of the stirring roller can change the movement track and mixing mode of the material in the stirring bin, thereby ensuring that the additives and plastic particles are fully and uniformly mixed.

[0016] Thirdly, the application realizes high automation and intrinsic safety of the device, and significantly improves mixing uniformity. The lifting assembly is arranged to drive the lifting seat to move up and down. On one hand, the jacking piece on the lifting seat can automatically jack up the cover plate of the crushing box when moving upwards, and automatically close the cover plate when moving downwards, thereby saving the cumbersome operation of manually opening and closing the cover plate. On the other hand, and more importantly, after the cover plate is closed, the lifting seat continues to move downwards, and the pressing block and spring structure on the jacking piece can reliably extrude the control switch, thereby starting the first driving motor. This mechanical safety interlocking design of “closing the cover first and then starting” fundamentally eliminates the safety hazard of starting the crusher due to the cover plate not being closed.

[0017] Fourthly, the application is provided with a convex rod on the upper end of the transmission shaft, which cooperates with the elastic sheet on the feeding pipe. Only when the lifting seat moves to the upper part to perform the feeding operation, the rotating convex rod will periodically collide with the elastic sheet to apply high-frequency vibration to the feeding pipe, thereby realizing auxiliary feeding on demand and ensuring the smoothness of material conveying. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the three-dimensional structure of the application Figure One ; Figure 2 is a schematic diagram of the three-dimensional structure of the application Figure Two ; Figure 3 is a schematic diagram of the three-dimensional structure of the application Figure Three ; Figure 4 is a schematic diagram of the three-dimensional structure of the application Figure 5 is an enlarged view of part A in the application Figure 4 ; Figure 6 is a schematic diagram of the three-dimensional structure of the application Figure 7 is an enlarged view of part B in the application Figure 6 ; Figure 8 is a schematic diagram of the three-dimensional structure of the application Figure 9 is a schematic diagram of the three-dimensional structure of the application Figure 10 is an enlarged view of part C in the application Figure 9 ; Figure 11 is a schematic diagram of the three-dimensional structure of the application Figure 12 is a schematic diagram of the three-dimensional structure of the application Figure 13 is a schematic diagram of the three-dimensional structure of the application Figure 14It is a schematic view of the limiting sliding groove structure in the application.

[0019] In the figure: 1, base; 2, first support column; 3, crushing box; 4, crushing assembly; 41, first drive motor; 42, crushing roller; 43, feeding valve; 44, feeding pipe; 45, cover plate; 46, convex plate; 47, jacking piece; 471, horizontal part; 472, vertical part; 4721, limiting sliding groove; 4722, pressing block; 4723, spring; 48, control switch; 5, mixing cylinder; 6, fixed ring; 7, second support column; 8, top cover; 9, fixed seat; 10, lifting seat; 11, lifting assembly; 111, second drive motor; 112, lead screw; 113, guide rod; 114, lifting plate; 115, connecting rod; 12, guide block; 13, guide groove; 14, stirring assembly; 141, third drive motor; 142, first drive gear; 143, first driven gear; 15, transmission shaft; 16, first mounting seat; 17, second mounting seat; 18, stirring roller; 19, mounting assembly; 191, rotating column; 192, second drive gear; 193, second driven gear; 194, first threaded hole; 195, threaded column; 196, limiting block; 197, connecting column; 198, rotating ring; 20, second threaded hole; 21, convex rod; 22, elastic sheet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-8 In the embodiments of the present application, the base 1 is fixedly connected with the crushing box 3 at the top through the first support column 2, the crushing assembly 4 is installed inside the crushing box 3, the mixing cylinder 5 is fixedly connected at the top of the base 1, the top cover 8 is installed at the top of the mixing cylinder 5, the lifting assembly 11 is symmetrically installed on the outer side wall of the mixing cylinder 5, the lifting seat 10 is installed at the top of the mixing cylinder 5 through the lifting assembly 11, the stirring assembly 14 is installed at the top of the lifting seat 10, the transmission shaft 15 is symmetrically rotationally connected at the bottom of the lifting seat 10, the stirring roller 18 is threadedly connected at the bottom of the transmission shaft 15 through the mounting assembly 19; The mounting assembly 19 comprises a rotating column 191, a second driving gear 192, a second driven gear 193, a first threaded hole 194, a threaded column 195, a limiting block 196, a connecting column 197 and a rotating ring 198, the bottom of the transmission shaft 15 is fixedly connected with the first mounting seat 16, the top of the first mounting seat 16 is symmetrically and rotatably connected with the rotating column 191, the top of the rotating column 191 is provided with the first threaded hole 194, the first threaded hole 194 is threadedly connected with the threaded column 195, the top of the threaded column 195 is fixedly connected with the limiting block 196, the outer side wall of the rotating column 191 is fixedly sleeved with the second driven gear 193, the outer side of the transmission shaft 15 is rotatably sleeved with the second driving gear 192, the top of the second driving gear 192 is symmetrically and fixedly connected with the connecting column 197, the outer side of the transmission shaft 15 is rotatably sleeved with the rotating ring 198, the top end of the connecting column 197 is fixedly connected with the bottom of the rotating ring 198, the diameter of the second driving gear 192 is greater than that of the second driven gear 193, the second driving gear 192 and the second driven gear 193 are in mesh with each other, the top of the stirring roller 18 is fixedly connected with the second mounting seat 17, the top of the second mounting seat 17 is symmetrically provided with the second threaded hole 20, the threaded column 195 is in threaded connection with the second threaded hole 20, the stirring roller 18 is combined with the second mounting seat 17 and the first mounting seat 16 at the bottom of the transmission shaft 15, the rotating ring 198 is rotated, the connecting column 197 is driven to rotate the second driving gear 192, the second driving gear 192 drives the second driven gear 193 to rotate, so that the rotating column 191 is rotated, at the same time, the first threaded hole 194 is in threaded transmission with the threaded column 195, so that the threaded column 195 is controlled to advance, the threaded column 195 is in threaded connection with the second threaded hole 20 on the second mounting seat 17, and the installation of the stirring roller 18 is completed.

[0022] Please refer to Figure 1 The outer side wall of the mixing barrel 5 is fixedly sleeved with the fixed ring 6, the bottom of the fixed ring 6 is fixedly connected with the second supporting column 7 in a symmetrical mode, the second supporting column 7 is fixedly connected with the top of the base 1, the fixed ring 6 is sleeved on the outer side wall of the mixing barrel 5, is connected with the base 1 in cooperation with the symmetrically-distributed second supporting columns 7, and forms a stable triangular supporting structure.

[0023] Please refer to Figure 4The stirring assembly 14 comprises a third driving motor 141, a first driving gear 142 and a first driven gear 143, the third driving motor 141 is mounted on the top of the lifting seat 10, the first driving gear 142 is rotatably connected to the top of the lifting seat 10, the output end of the third driving motor 141 is fixedly connected with the first driving gear 142, the first driven gear 143 is rotatably connected to the top of the lifting seat 10 in a symmetrical mode, the top end of the transmission shaft 15 is fixedly connected with the bottom of the first driven gear 143, the diameter of the first driven gear 143 is greater than that of the first driving gear 142, the first driving gear 142 and the first driven gear 143 are in mesh with each other, the third driving motor 141 is started to control the first driving gear 142 to drive the first driven gear 143 to rotate, and the first driven gear 143 drives the transmission shaft 15 to rotate, so that the transmission shaft 15 drives the stirring roller 18 to rotate.

[0024] Please refer to Figures 2-3 The lifting assembly 11 comprises a second driving motor 111, a lead screw 112, a guide rod 113, a lifting plate 114 and a connecting rod 115, the outer side wall of the mixing cylinder 5 is fixedly connected with a fixed seat 9 in a symmetrical mode, the lead screw 112 and the guide rod 113 are rotatably connected to the fixed seat 9 respectively and fixedly, the second driving motor 111 is mounted on the top of the fixed seat 9, the output end of the second driving motor 111 is fixedly connected with the lead screw 112, the outer side of the lead screw 112 and the guide rod 113 is sleeved with the lifting plate 114, the top of the lifting plate 114 is fixedly connected with the connecting rod 115 in a symmetrical mode, the top end of the connecting rod 115 is fixedly connected with the bottom of the lifting seat 10, the lead screw 112 is threadedly connected with the lifting plate 114, and the guide rod 113 is slidably connected with the lifting plate 114, the second driving motor 111 is started to control the lead screw 112 to rotate, the lead screw 112 is in threaded transmission with the lifting plate 114 during rotation, so that the lifting plate 114 is controlled to lift, and the lifting plate 114 drives the lifting seat 10 to lift through the connecting rod 115, and the lifting seat 10 drives the stirring assembly 14, the transmission shaft 15 and the stirring roller 18 to lift.

[0025] Please refer to Figure 2 The outer side wall of the mixing cylinder 5 is symmetrically provided with a guide groove 13, the lifting plate 114 is fixedly connected with a guide block 12 in a symmetrical mode close to one side of the mixing cylinder 5, and the guide block 12 is slidably connected with the guide groove 13, when the lifting plate 114 lifts, the lifting plate 114 drives the guide block 12 to slide in the guide groove 13.

[0026] Please refer to Figures 1-3The crushing assembly 4 comprises a first driving motor 41, a crushing roller 42, a feeding valve 43 and a feeding pipe 44, the crushing roller 42 is symmetrically connected to rotate in the crushing box 3, the first driving motor 41 is symmetrically installed on one side of the crushing box 3, the output end of the first driving motor 41 is fixedly connected with the crushing roller 42, the feeding pipe 44 is fixedly connected to the bottom of the crushing box 3, the other end of the feeding pipe 44 is fixedly connected with the top cover 8, the inside of the crushing box 3 is communicated with the inside of the mixing cylinder 5 through the feeding pipe 44, and the feeding valve 43 is installed on the outside of the feeding pipe 44, the recycled plastic particles, the filler and the solid additive are placed in the crushing box 3, the first driving motor 41 is started, the crushing roller 42 is controlled to rotate, and the recycled plastic particles, the filler and the solid additive are crushed, and then the feeding valve 43 is started, and the crushed materials are fed into the inside of the mixing cylinder 5 through the feeding pipe 44.

[0027] The working principle of the present application is that: first, the stirring roller 18 is combined with the first mounting seat 16 at the bottom of the transmission shaft 15 and the second mounting seat 17, the rotating ring 198 is rotated, the connecting column 197 drives the second driving gear 192 to rotate, the second driving gear 192 drives the second driven gear 193 to rotate, thereby making the rotating column 191 rotate, at the same time, the first threaded hole 194 and the threaded column 195 are in threaded transmission, thereby controlling the threaded column 195 to advance, the threaded column 195 is in threaded connection with the second threaded hole 20 on the second mounting seat 17, the installation of the stirring roller 18 is completed, the recycled plastic particles, the filler and the solid additive are placed in the crushing box 3, the first driving motor 41 is started, the crushing roller 42 is controlled to rotate, the recycled plastic particles, the filler and the solid additive are crushed, then the feeding valve 43 is started, and the crushed materials are fed into the inside of the mixing cylinder 5 through the feeding pipe 44, the second driving motor 111 is started, the screw rod 112 is controlled to rotate, the screw rod 112 is in threaded transmission with the lifting plate 114 when rotating, thereby controlling the lifting plate 114 to ascend and descend, at the same time, the lifting plate 114 drives the lifting seat 10 to ascend and descend through the connecting rod 115, at the same time, the lifting seat 10 drives the stirring assembly 14, the transmission shaft 15 and the stirring roller 18 to ascend and descend, at the same time, the third driving motor 141 is started, the first driving gear 142 drives the first driven gear 143 to rotate, thereby controlling the stirring roller 18 to rotate, the ascending and descending of the stirring roller 18 when rotating is completed. The present application can quickly locate the fault component for maintenance personnel, without the need of complicated disassembly of the whole device, so that the damaged stirring roller 18 can be replaced alone, the maintenance time is greatly shortened, the maintenance difficulty is reduced, the device can be quickly restored to normal operation, the influence of shutdown on production plan is reduced, the stirring roller 18 suitable for different formulas or processes can be flexibly switched, thereby improving the mixing efficiency and uniformity, reducing the material mixing time, improving the single batch production efficiency, and meeting the diversified and batch production requirements of automobile parts.

[0028] In order to improve the automation degree and operation safety of the present application, a set of linkage mechanism is designed between the top of the crushing box 3 and the lifting seat 10, which can not only realize the automatic opening and closing of the cover plate 45 of the crushing box 3, but also can build the safety interlocking logic of "closing the cover first and then starting".

[0029] Specifically, the top of the crushing box 3 is rotatably installed with a cover plate 45 by a rotating shaft or the like, which is used for material input and box sealing. In order to be linked with the lifting mechanism, a lug plate 46 is integrally formed or fixedly connected on the side of the cover plate 45, which serves as the stress point of lever action. Correspondingly, a jacking piece 47 is fixedly connected on the side of the lifting seat 10 facing the lug plate 46.

[0030] The jacking piece 47 is preferably L-shaped or similar profile structure, which includes a horizontal part 471 and a vertical part 472 substantially perpendicular to each other. The horizontal part 471 is firmly connected with the side wall of the lifting seat 10, ensuring that the jacking piece 47 can be accurately vertically lifted synchronously with the lifting seat 10. The vertical part 472 extends downward from the distal end of the horizontal part 471, and the lower end part thereof is just located directly below the lug plate 46 in spatial position. In this way, when the lifting seat 10 is driven upward by the lifting assembly 11, the vertical part 472 of the jacking piece 47 will abut and jack up the lug plate 46 from bottom to top, driving the cover plate 45 to rotate around its rotating shaft and open by the principle of lever, thereby automatically completing the opening of the material input port and facilitating the operator to add recycled plastic particles, filler and other materials. Conversely, when the lifting seat 10 is lowered, the vertical part 472 is separated from the support of the lug plate 46, and the cover plate 45 is automatically closed under the action of its own gravity, realizing the automatic closing of the cover plate.

[0031] More importantly, the present application further designs a first driving motor 41 start control mechanism linked with the closed state of the cover plate 45. Specifically, a limiting sliding groove 4721 is formed on the side wall of the vertical part 472 along its length direction. A pressing block 4722 is slidably accommodated inside the limiting sliding groove 4721. In order to give the pressing block 4722 the elastic potential energy of downward pressing, an elastic element is provided above the pressing block 4722, and a compression spring 4723 is preferably used in the embodiment, one end of which abuts against the top surface of the pressing block 4722, and the other end abuts against the inner top wall of the limiting sliding groove 4721. A control switch 48, such as a travel switch, for controlling the start and stop of the first driving motor 41 is installed on the top of the first support column 2, i.e. the support block for fixing the crushing box 3. The position of the control switch 48 is accurately set, which is just located on the downward movement path of the pressing block 4722.

[0032] The working process is as follows: when the lifting seat 10 is lowered from the high position, firstly, the lowering of the vertical part 472 makes the cover plate 45 completely closed. Then, the lifting seat 10 continues to descend for a small preset stroke, at this time, the lower end face of the pressing block 4722 begins to contact the triggering part of the control switch 48. With the continuous lowering of the lifting seat 10, the pressing block 4722 slides upward relative to the vertical part 472 in the limiting sliding groove 4721 due to the upward supporting resistance provided by the control switch 48, thereby continuously compressing the spring 4723. The elastic potential energy stored by the compressed spring 4723 is converted into a continuously increasing downward pressure on the pressing block 4722, and when the pressure reaches the triggering threshold of the control switch 48, the switch is reliably pressed down and the circuit is turned on, thereby starting the first drive motor 41 and beginning the crushing of the materials in the box. Preferably, after the control switch 48 is triggered, the pressing block 4722 can still move downward with the lifting seat 10 for a small distance, and the switch can be continuously and stably pressed, thereby ensuring the continuity and reliability of the crushing operation.

[0033] The present application realizes the automatic safety process of "opening the cover when lifting, closing the cover when lowering, and enabling when the cover is closed", greatly simplifies manual operation, and fundamentally eliminates the safety hazards such as material splashing and dust pollution caused by forgetting to close the cover when starting the crusher.

[0034] In order to solve the problem that the fine powder-shaped material after crushing may be adhered to the wall, bridged, and blocked due to static adsorption, humidity, or the adhesion of the material itself when passing through the feeding pipe 44, thereby ensuring that the material can smoothly and efficiently enter the mixing cylinder 5, the present application further provides a triggered auxiliary vibration discharging device.

[0035] The realization of the device depends on the rotating motion of the transmission shaft 15. Specifically, a radially protruding lug 21 is fixedly connected to the outer peripheral wall of one of the transmission shafts 15. The lug 21 is arranged at the upper end region of the transmission shaft 15. The purpose of this position is: first, it can cooperate with the spring 22 when the lifting seat 10 is in the high position; second, it can ensure that the lug 21 does not interfere with the inner wall of the mixing cylinder 5 or other components when the transmission shaft 15 descends with the lifting seat 10 into the mixing cylinder 5 for stirring operation, thereby not affecting the normal realization of the stirring function.

[0036] A spring 22 is fixedly installed on the outer surface of the feeding pipe 44, which matches the lug 21. The spring 22 is preferably a metal sheet or a high molecular material sheet with good elastic memory and fatigue resistance, one end of which is fixed to the pipe wall of the feeding pipe 44, and the other free end naturally protrudes towards the direction of the transmission shaft 15, and its position is just able to intersect with the motion trajectory of the rotating lug 21.

[0037] The device does not work continuously during the operation of the equipment, but is activated only in the "feeding" phase, when it is most needed.

[0038] The specific working principle is: only when the lifting seat 10 is driven by the lifting assembly 11 to move to the uppermost position of its stroke, which corresponds to the cover plate 45 of the crushing box 3 being opened by the lifting piece 47, the device is in the working condition of preparing to feed or feeding downward through the feeding pipe 44, at this time, the protruding rod 21 on the upper end of the transmission shaft 15 is matched in height with the spring piece 22 on the feeding pipe 44.

[0039] In this specific state, when the stirring assembly 14 starts, the third driving motor 141 drives the transmission shaft 15 to rotate, and the protruding rod 21 on the upper end of the shaft will periodically and quickly collide and push the free end of the spring piece 22 with the rotation of the shaft. Each collision causes the spring piece 22 to instantaneously deform elastically, and then quickly rebounds by its own elasticity after the collision ends. The rapid "impact-rebound" process effectively transmits high-frequency mechanical impact force to the entire feeding pipe 44, thereby causing the feeding pipe 44 to vibrate with a small amplitude but a high frequency. This can effectively break the static friction between the powder materials and the adhesion to the pipe wall, and promote the materials to always maintain a flowing state, so as to smoothly, uniformly and without blockage slide down to the mixing cylinder 5 below.

[0040] The present application not only reliably solves the technical problem of poor powder feeding, improves the efficiency and automation level of material transfer, and realizes the on-demand activation of the vibration function, but also avoids unnecessary mechanical vibration, noise and energy consumption during the mixing and stirring stages without the need for feeding.

Claims

1. A premixing and modification device for recycled plastic granules from automotive parts, characterized in that, Includes a base (1), a crushing component (4) is installed on the top of the base (1), a mixing cylinder (5) is fixedly connected to the top of the base (1), a top cover (8) is installed on the top of the mixing cylinder (5), a lifting component (11) is symmetrically installed on the outer side wall of the mixing cylinder (5), a lifting seat (10) is provided on the top of the mixing cylinder (5), an agitator (14) is installed on the top of the lifting seat (10), a drive shaft (15) is symmetrically rotatably connected to the bottom of the lifting seat (10), and a stirring roller (18) is threadedly connected to the bottom of the drive shaft (15) through an installation component (19). The mounting assembly (19) includes a rotating column (191), a second drive gear (192), a second driven gear (193), a first threaded hole (194), a threaded column (195), a limiting block (196), a connecting column (197), and a rotating ring (198). The bottom of the transmission shaft (15) is fixedly connected to a first mounting base (16). The top of the first mounting base (16) is symmetrically rotatably connected to the rotating column (191). The top of the rotating column (191) is provided with a first threaded hole (194). The threaded column (195) is threadedly connected inside the first threaded hole (194). The top of the threaded column (195) is fixedly connected to a limiting block (196). The outer wall of the rotating column (191) is fixedly sleeved with a second driven gear (193). The outer wall of the transmission shaft (15) is rotatably sleeved with a second drive gear (192). The top of the second drive gear (192) is fixedly connected to a rotating ring (198) through a connecting column (197). A fixing ring (6) is fixedly sleeved on the outer wall of the mixing cylinder (5), and a second support column (7) is symmetrically fixedly connected to the bottom of the fixing ring (6). The second support column (7) is fixedly connected to the top of the base (1).

2. The premixing and modification device for recycled plastic granules of automotive parts according to claim 1, characterized in that, The diameter of the second drive gear (192) is larger than the diameter of the second driven gear (193), and the second drive gear (192) and the second driven gear (193) mesh with each other.

3. The premixing and modification device for recycled plastic granules of automotive parts according to claim 1, characterized in that, The top of the stirring roller (18) is fixedly connected to a second mounting base (17), and the top of the second mounting base (17) is symmetrically provided with a second threaded hole (20), and the threaded post (195) and the second threaded hole (20) are threadedly connected.

4. The premixing and modification device for recycled plastic granules of automotive parts according to claim 1, characterized in that, The stirring assembly (14) includes a third drive motor (141), a first drive gear (142) and a first driven gear (143). The third drive motor (141) is mounted on the top of the lifting seat (10). The first drive gear (142) is rotatably connected to the top of the lifting seat (10). The output end of the third drive motor (141) is fixedly connected to the first drive gear (142). The first driven gear (143) is symmetrically rotatably connected to the top of the lifting seat (10). The top end of the transmission shaft (15) is fixedly connected to the bottom of the first driven gear (143).

5. The premixing and modification device for recycled plastic granules of automotive parts according to claim 4, characterized in that, The diameter of the first driven gear (143) is larger than the diameter of the first driving gear (142), and the first driving gear (142) meshes with the first driven gear (143).

6. The premixing and modification device for recycled plastic granules of automotive parts according to claim 1, characterized in that, The lifting assembly (11) includes a second drive motor (111), a lead screw (112), a guide rod (113), a lifting plate (114), and a connecting rod (115). A fixed seat (9) is symmetrically fixedly connected to the outer wall of the mixing cylinder (5). The lead screw (112) is rotatably connected to the fixed seat (9), and the guide rod (113) is fixedly connected to the fixed seat (9). The second drive motor (111) is installed on the top of the fixed seat (9). The output end of the second drive motor (111) is fixedly connected to the lead screw (112). The lifting plate (114) is sleeved on the outer side of both the lead screw (112) and the guide rod (113). The connecting rod (115) is symmetrically fixedly connected to the top of the lifting plate (114). The top end of the connecting rod (115) is fixedly connected to the bottom of the lifting seat (10).

7. The premixing and modification device for recycled plastic granules of automotive parts according to claim 6, characterized in that, The lead screw (112) is threadedly connected to the lifting plate (114), and the guide rod (113) is slidably connected to the lifting plate (114).

8. The premixing and modification device for recycled plastic granules of automotive parts according to claim 7, characterized in that, The mixing cylinder (5) has symmetrical guide grooves (13) on its outer side wall. The lifting plate (114) is symmetrically fixedly connected to a guide block (12) on the side near the mixing cylinder (5). The guide block (12) and the guide groove (13) are slidably connected.

9. The premixing and modification device for recycled plastic granules of automotive parts according to claim 1, characterized in that, The crushing assembly (4) includes a first drive motor (41), a crushing roller (42), a feeding valve (43), and a feeding pipe (44). The top of the base (1) is fixedly connected to a crushing box (3) via a first support column (2). The crushing roller (42) is symmetrically rotated inside the crushing box (3). The first drive motor (41) is symmetrically installed on one side of the crushing box (3). The output end of the first drive motor (41) is fixedly connected to the crushing roller (42). The bottom of the crushing box (3) is fixedly connected to a feeding pipe (44). The other end of the feeding pipe (44) is fixedly connected to the top cover (8). The inside of the crushing box (3) is connected to the inside of the mixing cylinder (5) via the feeding pipe (44). The feeding valve (43) is installed on the outside of the feeding pipe (44). The top of the crushing box (3) is rotatably mounted with a cover plate (45), and a protruding plate (46) is extended to the side of the cover plate (45). The lifting seat (10) and the protruding plate (46) are connected to a lifting member (47) on the same side. The lifting member (47) includes an integrally connected horizontal part (471) and a vertical part (472). The other end of the vertical part (472) extends to the lower side of the protruding plate (46) and is used to lift the protruding plate (46) when the lifting seat (10) is raised or lowered, so as to open or close the cover plate (45). The side of the vertical part (472) is also provided with a limiting groove (4721). A pressure block (4722) is slidably connected in the limiting groove (4721). A spring (4723) is provided above the pressure block (4722). The other end of the spring (4723) abuts against the inner top of the limiting groove (4721). The top of the first support column (2) is provided with a support block for fixing the crushing box (3). The support block is provided with a control switch (48) for controlling the start and stop of the first drive motor (41). When the pressure block (4722) moves down, it is used to squeeze the control switch (48).

10. The premixing and modification device for recycled plastic granules of automotive parts according to claim 1, characterized in that, One of the drive shafts (15) is symmetrically provided with a protruding rod (21). The protruding rod (21) is located at the upper end of the drive shaft (15) so that the protruding rod (21) does not affect the downward movement of the drive shaft (15). The outer surface of the feeding tube (44) is provided with a spring piece (22) that matches the protruding rod (21). When the protruding rod (21) rotates, it collides with the spring piece (22), causing the feeding tube (44) to vibrate.

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