Injection molding equipment for plastic waste recycling

Abstract

The invention discloses injection molding equipment for plastic waste recycling, relates to the technical field of plastic injection molding, and aims to solve the technical problem of long material transfer waiting time during independent operation of traditional multiple equipment. The injection molding equipment comprises an injection molding machine main body, and a feeding mechanism is arranged on the side of the injection molding machine main body; the feeding mechanism is composed of a rotating assembly, a guide assembly, a plurality of plastic treatment assemblies and an air supply assembly, each plastic treatment assembly comprises a supporting frame, a cover body is arranged in the supporting frame, a rotating screen drum is arranged in an inner cavity of the cover body, a drying frame is arranged in an inner cavity of the rotating screen drum, and a plurality of fine drying rods are movably arranged on the outer side wall of the drying frame; adjusting rods are slidably arranged in inner cavities of the drying frames. The plastic particle pre-treatment device has the advantage that the plastic particle pre-treatment period is greatly shortened through continuous operation of centralized spin-drying and refined stirring and drying.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic injection molding, and more particularly to an injection molding equipment for recycling plastic waste. BACKGROUND

[0002] In the process of recycling plastic waste, injection molding is one of the key links, and the pretreatment quality of plastic particles directly affects the performance of the final injection molding product. Currently, after being crushed and cleaned, plastic waste needs to be dehydrated and dried through pretreatment processes such as dehydration and drying before being sent to an injection molding machine for processing.

[0003] In the prior art, dehydration and drying are usually carried out in separate steps using independent equipment. First, a centrifugal dehydrator is used to remove a large amount of water on the surface of the plastic particles, and then the dehydrated particles are transferred to a dryer for drying. This step-by-step processing method not only requires additional conveying devices for material transfer between equipment, increasing equipment investment costs, but also prolongs the pretreatment cycle, resulting in low production efficiency. Moreover, after centrifugal dehydration, the plastic particles are prone to accumulate and clump, making it difficult for heat to penetrate the accumulated layer during subsequent drying, resulting in uneven drying and residual moisture in some particles, which in turn affects the molding quality of the injection molding product. In view of this, we propose an injection molding equipment for recycling plastic waste. SUMMARY

[0004] The present application aims to provide an injection molding equipment for recycling plastic waste to solve the technical problem of long material transfer waiting time in the independent operation of traditional multiple equipment.

[0005] To solve the above technical problems, the application provides the following technical scheme: a plastic waste recycling injection molding equipment, comprising an injection molding machine body, a feeding mechanism and a mechanical arm mechanism arranged on the side of the injection molding machine body, a plurality of mechanical arm mechanisms, and another mechanical arm mechanism arranged on the other side of the injection molding machine body; the feeding mechanism is composed of a rotating assembly, a guide assembly, a plurality of plastic processing assemblies and a gas feeding assembly; the rotating assembly comprises a rotating frame; a plurality of plastic processing assemblies are arranged in an annular array on the top of the rotating frame; the plastic processing assembly comprises a support frame, a cover arranged in the support frame, a rotating screen cylinder arranged in the cover, a drying frame arranged in the rotating screen cylinder, a plurality of fine drying rods movably arranged on the outer wall of the drying frame, and an adjusting rod slidably arranged in the drying frame; when the adjusting rod slides forward, the plurality of fine drying rods can be controlled to form a folding state; when the adjusting rod slides backward, the plurality of fine drying rods can be controlled to form an unfolding state; the guide assembly is arranged above the plastic processing assembly and can control the sliding state of the adjusting rod; when the plurality of fine drying rods form the folding state, the rotating screen cylinder can form a centrifugal water-shaking rotary motion state for the plastic particles in the inner cavity, and the drying frame can output radial high-temperature gas flow for the plastic particles; when the plurality of fine drying rods form the unfolding state, the rotating screen cylinder can stop rotating, and the plurality of fine drying rods in the unfolding state can rotate to form a stirring state for the plastic particles and output high-temperature gas flow for the plastic particles in the stirring state.

[0006] Preferably, the rotating assembly further comprises a support seat, an annular sliding groove is formed in the top of the support seat, an annular sliding strip is connected to the bottom of the rotating frame, and the rotating frame is arranged in the annular sliding groove through the annular sliding strip; a motor one is arranged in the inner cavity of the support seat, a gear one is connected to the output end of the motor one, an annular block is connected to the bottom of the rotating frame, and a toothed opening is arranged on the circumferential outer wall of the annular block, and the annular block is connected to the gear one through the toothed opening.

[0007] Preferably, the plastic processing assembly further comprises a fixing frame arranged on the top of the rotating frame, the support frame is arranged on the top of the fixing frame, and the bottom end of the support frame is rotationally connected to the fixing frame; a protective cover is further arranged in the support frame, a water storage bin is formed between the protective cover and the cover, a drain hole is formed in the bottom of the water storage bin, and a plug is inserted into the drain hole.

[0008] Preferably, the support frame side wall is provided with an annular rotating groove, the rotating screen cylinder is arranged in the annular rotating groove, and the rotating screen cylinder is a cylindrical screen structure; one end of the rotating screen cylinder is connected with a side fixing plate, the other end is connected with a side fixing frame, one side wall of the side fixing plate is provided with a tapered tooth opening, the drying rack is arranged between the side fixing plate and the side fixing frame; the drying rack inner cavity is provided with a triangular chute and a plurality of air inlet channels; the adjusting rod is arranged in the triangular chute, the adjusting rod is triangular in cross section, the adjusting rod is provided with a plurality of driving tooth openings on each outer side wall, one end of the adjusting rod is connected with an adjusting block, the adjusting block is arranged on the side of the side fixing frame, a plurality of tapered tooth grooves are arranged on the side wall of the adjusting block, and a plurality of transmission tooth openings are arranged on the circumferential outer wall of the adjusting block; the tapered tooth groove can be in meshing or disengaging state with the tapered tooth opening; the inner cavity of the protective cover is arranged with a motor two, the output end of the motor two is connected with a gear two, the side wall of the support frame is rotatably provided with a wide gear three, the gear two is meshed with the wide gear three, the wide gear three is meshed with the transmission tooth opening, and the tooth opening of the wide gear three has a predetermined length along the axial direction, so that the wide gear three can always be in meshing state with the transmission tooth opening when the adjusting block moves along the axial direction.

[0009] Preferably, the fine drying rod is a curved plate structure, one end of the fine drying rod is connected with a rotating block, the rotating block is arranged on the inner side wall of the drying rack, the side wall of the rotating block is a circular arc structure, a tooth opening one is arranged on the circular arc structure of the side wall of the rotating block, and the tooth opening one is meshed with the driving tooth opening.

[0010] Preferably, the side wall of the drying rack is provided with a plurality of air outlet holes one, and the plurality of air outlet holes one are in communication with the inner cavities of the air inlet channels; one side wall of the adjusting block is connected with an air inlet pipe, the other side wall is connected with a conversion pipe, the air inlet pipe and the conversion pipe are in communication through a plurality of communication holes, the conversion pipe is movably arranged on the outer side wall of one end of the drying rack, and the inner cavity of the conversion pipe is in communication with the inner cavities of the air inlet channels.

[0011] Preferably, the outer side wall of the drying rack is further connected with a plurality of adjusting air pipes, the side wall of the rotating block is connected with a pipe, the side wall of the fine drying rod is provided with a plurality of air outlet holes two, the inner cavity of the pipe is in communication with the plurality of air outlet holes two through the inner cavity of the fine drying rod; the pipe is movably arranged in the inner cavity of the adjusting air pipe, the other end of the adjusting air pipe is in communication with the inner cavities of the air inlet channels; the inner cavity of the adjusting air pipe is arranged with two stop blocks, and the input end of the pipe is arranged as two air inlets.

[0012] Preferably, the air feeding assembly comprises a main pipe arranged on the top of the support base, the main pipe is arranged in the inner cavity of the rotating frame and extends above the rotating frame, the input end of the main pipe is connected with an external air supply device through an air supply pipe, a branch pipe is rotatably connected to the top of the main pipe, the output end of the branch pipe is connected with a plurality of flexible pipes, and the output end of the flexible pipes is connected with the air inlet pipe.

[0013] Preferably, the guide assembly comprises a fixed support arranged on the top of the support base, the bottom of the fixed support is connected with a special-shaped guide rail through a plurality of fixed columns, the bottom of the special-shaped guide rail is in a circular arc structure, and the special-shaped guide rail is in an annular zigzag path; a guide block is rotatably connected to the circumferential outer wall of the air inlet pipe, a sliding block is movably connected to the top of the guide block, a semicircular groove is arranged on the top of the sliding block, and the sliding block is in sliding fit with the circular arc structure at the bottom of the special-shaped guide rail through the semicircular groove; a plug is arranged in the inner cavity of one end of the rotating screen cylinder in a plug-in manner, a push-pull block is connected to the side wall of the plug, the mechanical chuck of the mechanical arm mechanism can clamp the push-pull block, and the plug is in plug-in fit with the inner cavity of the rotating screen cylinder under the drive of the mechanical chuck.

[0014] Compared with the prior art, the present application has the following advantages: 1、The feeding mechanism is designed on the side of the injection molding machine body, the plurality of plastic processing assemblies of the feeding mechanism are used for pretreating the plastic particles fed into the injection molding machine body, the plastic particles after crushing and cleaning are first fed into the rotating screen cylinder, the control adjusting rod is slid forward to make the plurality of fine drying rods form a folding state, at this time, the rotating screen cylinder and the plurality of fine drying rods can rotate synchronously, the centrifugal force generated by the rotation of the rotating screen cylinder is used for quickly shaking off the water on the surface of the plastic particles, and the output radial high-temperature airflow of the drying frame is used for auxiliary drying, so that the effect of quickly cleaning a large amount of water on the surface of the plastic particles is achieved, then the control adjusting rod is slid backward through the guide assembly to make the plurality of fine drying rods switch to an unfolded state, at this time, the rotating screen cylinder stops rotating, the unfolded fine drying rods rotate independently and stir the accumulated plastic particles, the accumulated plastic particles after centrifugal drying are scattered, the water is difficult to dry due to accumulation is avoided, and in the scattering process, the plurality of fine drying rods output high-temperature airflows to the stirred plastic particles, so that the effect of fine drying is achieved; through the continuous operation of the centralized centrifugal drying and the fine stirring and drying, the pretreatment period of the plastic particles is greatly shortened, and the problem of long material transfer waiting time in the independent operation of the traditional multiple devices is solved.

[0015] 2. This invention, through the design of the conical toothed groove on the side wall of the adjusting block, can form an engaging or disengaged state with the conical toothed opening of the side plate of one end of the rotating screen cylinder. In the engaging state, the rotational power of the adjusting block drives the rotating screen cylinder to rotate synchronously, creating a centrifugal drying effect on the plastic particles. Simultaneously, multiple fine drying rods can be synchronously adjusted to rotate and retract towards the drying rack, preventing obstruction during the centrifugal drying process of the rotating screen cylinder. In the disengaged state, the rotating screen cylinder loses the rotational power transmitted by the adjusting block and stops rotating within the annular rotating groove of the support frame. Simultaneously, the adjusting rod slides backward along the triangular sliding groove inside the drying rack. The drive teeth on the outer wall engage with the teeth on the side wall of the rotating block, driving multiple fine drying rods to rotate and unfold away from the drying rack. At this time, the drying rack continues to rotate with the adjusting rod, and the unfolded fine drying rods rotate synchronously with the drying rack, creating a stirring and dispersing effect on the plastic particles accumulated in the rotating screen cylinder, preventing particle accumulation and moisture residue. This structural design not only meets the need for rapid centrifugal dehydration of plastic particles in the initial stage, but also allows switching to a deep drying mode after dehydration, thus achieving flexible switching between different drying modes without the need for multiple processing devices to operate independently, significantly shortening the pretreatment time and improving the drying quality of plastic particles.

[0016] 3. This invention features two diagonally arranged baffles within the regulating trachea, and two diagonally arranged air inlets at the tube input end. The baffles effectively seal the air inlets. During operation, the high-temperature airflow from the intake channel flows synchronously into the regulating trachea. When the drying rod is retracted, its connected rotating block rotates the tube to a specific angle. At this angle, the diagonally arranged baffles within the regulating trachea precisely seal the diagonally arranged air inlets at the tube input end, preventing the high-temperature airflow from entering through the tube. The precision drying rod outputs heat through only one exhaust port on the drying rack, meeting the auxiliary drying needs of the centrifugal dehydration stage. When the precision drying rod is switched to the extended state, the rotating block drives the insertion tube to rotate, causing the air inlet and the baffle to be misaligned and unsealed. The high-temperature airflow in the regulating air pipe enters the inner cavity of the insertion tube through the air inlet, and then exits through multiple exhaust ports on the side wall of the precision drying rod. Combined with the stirring action of the precision drying rod, it achieves close-range, precise high-temperature drying of dispersed plastic particles, further improving drying uniformity and efficiency, and avoiding the ineffectiveness of high-temperature airflow output from multiple exhaust ports when the precision drying rod is in the retracted state.

[0017] 4、The present application is designed to be a special-shaped guide rail in a ring-shaped zigzag path, so that the slider will adaptively slide along the zigzag path of the special-shaped guide rail while moving along the circumference of the plastic treatment assembly; this adaptive sliding can realize the automatic state switching of the plastic treatment assembly during circulation between different workstations: in the feeding workstation and the spin-drying workstation, the driving adjustment block is engaged with the rotating screen cylinder, the fine drying rod is folded, and the centrifugal water spinning and auxiliary drying are opened synchronously; when the spin-drying workstation is transitioned to the fine drying workstation, the driving adjustment block is separated from the rotating screen cylinder, the fine drying rod is unfolded, and the automatic switching to the stirring and fine drying mode is realized; when the fine drying workstation is transitioned to the discharging workstation, the supporting frame is rotated to incline the rotating screen cylinder, providing convenience for subsequent discharging; the whole process relies on the track design of the special-shaped guide rail, without the need for additional driving elements to control the actions of each component, so as to accurately match the whole process requirements of centrifugal water spinning, stirring and drying, and inclined discharging, greatly improving the automation degree and process coherence of the plastic particle pretreatment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure of the rotating frame and the fixed frame of the present application; Figure 3 It is a schematic diagram of the split structure of the rotating assembly of the present application; Figure 4 It is a schematic diagram of the split structure of the rotating assembly of the present application; Figure 5 It is a schematic diagram of the split structure of the plastic treatment assembly of the present application; Figure 6 It is a schematic diagram of one state of the side fixing plate and the adjustment block of the present application; Figure 7 It is a schematic diagram of another state of the side fixing plate and the adjustment block of the present application; Figure 8 It is a schematic diagram of the structure of the adjustment block and the adjustment rod of the present application; Figure 9 It is a schematic diagram of the split structure of the rotating screen cylinder and the plug of the present application; Figure 10 It is a schematic diagram of the drying rack structure of the present application; Figure 11 It is a schematic diagram of one split structure of the adjustment block, the rotating screen cylinder and the drying rack of the present application; Figure 12 It is a schematic diagram of one split structure of the drying rack of the present application; Figure 13 It is a schematic diagram of the split structure of the adjustment air pipe of the present application; Figure 14 It is a schematic diagram of the rotating block and the cannula structure of the present application; Figure 15The figure is a schematic view of the special-shaped guide rail structure of the present application. Figure 16 The figure is a schematic view of the station arrangement of the present application.

[0019] Explanation of figure numbers: 1, injection molding machine main body; 2, feeding mechanism; 3, mechanical arm mechanism; 4, rotating assembly; 5, guide assembly; 6, plastic processing assembly; 7, air feeding assembly; 8, feeding station; 9, spin-drying station; 10, fine drying station; 11, discharging station; 401, rotating frame; 402, support seat; 403, annular slide bar; 404, motor one; 405, gear one; 406, annular block; 501, fixed support; 502, fixed column; 503, special-shaped guide rail; 601, support frame; 602, cover body; 603, rotating sieve cylinder; 604, drying frame; 605, fine drying rod; 606, adjusting rod; 607, fixed frame; 608, protective cover; 609, water storage bin; 610, plug; 611, annular rotating groove; 612, side fixing plate; 613, side fixing frame; 614, conical tooth opening; 615, triangular sliding groove; 616, air inlet passage; 617, air outlet hole one; 618, driving tooth opening; 619, adjusting block; 620, conical tooth groove; 621, transmission tooth opening; 622, motor two; 623, gear two; 624, wide gear three; 625, rotating block; 626, tooth opening one; 627, air inlet pipe; 628, conversion pipe; 629, communication hole; 630, adjusting air pipe; 631, cannula; 632, air outlet hole two; 633, stop block; 634, air inlet; 635, guide block; 636, sliding block; 637, semicircular groove; 638, plug; 639, push-pull block; 701, main pipeline; 702, air conveying pipe; 703, shunt pipe; 704, flexible pipe. DETAILED DESCRIPTION

[0020] As Figures 1 to 16The application relates to an injection molding equipment for plastic waste recycling, which comprises an injection molding machine body 1, the injection molding machine body 1 comprises a feeding hopper, feeding mechanisms 2 and mechanical arm mechanisms 3 are arranged on the sides of the injection molding machine body 1, the mechanical arm mechanisms 3 are multiple, another mechanical arm mechanism 3 is arranged on the other side of the injection molding machine body 1, and the feeding mechanisms 2 can send plastic particles into the feeding hopper of the injection molding machine body 1; the feeding mechanism 2 is composed of rotating assemblies 4, guiding assemblies 5, multiple plastic processing assemblies 6 and gas feeding assemblies 7; the rotating assembly 4 comprises a rotating frame 401; the multiple plastic processing assemblies 6 are arranged in an annular array on the top of the rotating frame 401; the plastic processing assembly 6 comprises a support frame 601, a cover body 602 is arranged in the support frame 601, a rotating sieve cylinder 603 is arranged in the cover body 602, a drying frame 604 is arranged in the rotating sieve cylinder 603, multiple fine drying rods 605 are movably arranged on the outer side wall of the drying frame 604, an adjusting rod 606 is slidably arranged in the drying frame 604, when the adjusting rod 606 slides forward, the multiple fine drying rods 605 can be controlled to form a folding state, when the adjusting rod 606 slides backward, the multiple fine drying rods 605 can be controlled to form an unfolding state; the guiding assembly 5 is arranged above the plastic processing assembly 6, and the guiding assembly 5 can control the sliding state of the adjusting rod 606; when the multiple fine drying rods 605 form the folding state, the rotating sieve cylinder 603 can form a centrifugal water-shaking rotating motion state of the plastic particles in the inner cavity, and the drying frame 604 can output radial high-temperature gas flow to the plastic particles; when the multiple fine drying rods 605 form the unfolding state, the rotating sieve cylinder 603 can stop rotating, the multiple fine drying rods 605 in the unfolding state can rotate, the plastic particles can form a stirring state, and high-temperature gas flow is output to the plastic particles in the stirring state.

[0021] The application is characterized in that a feeding mechanism 2 is arranged on the side of the injection molding machine body 1, a plurality of plastic processing components 6 of the feeding mechanism 2 are used to pretreat the plastic particles fed into the injection molding machine body 1, the plastic particles after crushing and cleaning are first fed into the rotating sieve cylinder 603, the plurality of fine drying rods 605 are in a folding state by sliding the adjusting rod 606 forward, at this time, the rotating sieve cylinder 603 and the plurality of fine drying rods 605 can rotate synchronously, the centrifugal force generated by the rotation of the rotating sieve cylinder 603 is used to quickly shake off the water on the surface of the plastic particles, and the output radial high-temperature airflow of the drying rack 604 is used to assist drying, so that the effect of quickly cleaning a large amount of water on the surface of the plastic particles is achieved, and then the adjusting rod 606 is slid backward by the guide assembly 5, so that the plurality of fine drying rods 605 are switched to an unfolded state, at this time, the rotating sieve cylinder 603 stops rotating, the unfolded fine drying rods 605 rotate independently and stir the accumulated plastic particles, the plastic particles in the accumulated state after centrifugal drying are broken up, so that the water is difficult to dry due to accumulation is avoided, and in the breaking-up process, the plurality of fine drying rods 605 output high-temperature airflow to the plastic particles in the stirring state, so that the effect of fine drying is achieved; through the continuous operation of the centralized centrifugal drying and the fine stirring and drying, the plastic particle pretreatment period is greatly shortened, and the problem of long material transfer waiting time in the independent operation of the traditional multiple devices is solved.

[0022] In the embodiment of the application, the rotating assembly 4 further comprises a support seat 402, an annular sliding groove is formed in the top of the support seat 402, an annular sliding strip 403 is connected to the bottom of the rotating frame 401, and the rotating frame 401 is arranged in the annular sliding groove in a rotating manner through the annular sliding strip 403; a motor one 404 is arranged in the inner cavity of the support seat 402, a gear one 405 is connected to the output end of the motor one 404, an annular block 406 is connected to the bottom of the rotating frame 401, a toothed opening is arranged on the circumferential outer wall of the annular block 406, and the annular block 406 is connected in a meshing manner with the gear one 405 through the toothed opening. When the rotating assembly 4 works, the motor one 404 is started and drives the gear one 405 at the output end to rotate, the gear one 405 drives the rotating frame 401 to rotate synchronously through the toothed opening of the annular block 406, and the annular sliding strip 403 at the bottom of the rotating frame 401 and the annular sliding groove at the top of the support seat 402 form a sliding fit, thereby providing stable guidance for the rotation of the rotating frame 401 and ensuring that the rotating frame 401 drives the plurality of plastic processing components 6 arranged in an annular array at the top to stably and orderly perform circumferential movement, so that the continuous flow of the plastic particle pretreatment process is realized.

[0023] In the embodiment of the present application, the plastic processing assembly 6 further comprises a fixed frame 607 arranged on the top of the rotating frame 401, the support frame 601 is arranged on the top of the fixed frame 607, and one end of the bottom of the support frame 601 is rotationally connected with the fixed frame 607; the support frame 601 is further provided with a protective cover 608 inside, and the protective cover 608 and the cover body 602 form a water storage bin 609 therebetween, the bottom of the water storage bin 609 is provided with a drain hole, a plug 610 is inserted into the drain hole, and the water storage bin 609 can collect and store the water removed by the plastic particles, so as to prevent the water from overflowing, and when the water in the water storage bin 609 is relatively more, the plug 610 in the drain hole can be pulled out to clean the water.

[0024] In the embodiment of the present application, the side wall of the support frame 601 is provided with an annular rotating groove 611, the rotating sieve cylinder 603 is rotationally arranged in the annular rotating groove 611, and the rotating sieve cylinder 603 is a cylindrical sieve net structure; one end of the rotating sieve cylinder 603 is connected with a side fixing plate 612, and the other end of the rotating sieve cylinder 603 is connected with a side fixing frame 613 on the inner side wall; the side wall of the side fixing plate 612 is provided with a tapered tooth opening 614, and the drying frame 604 is rotationally arranged between the side fixing plate 612 and the side fixing frame 613; the inner cavity of the drying frame 604 is provided with a triangular sliding groove 615 and a plurality of air inlet channels 616; the adjusting rod 606 is slidingly arranged in the triangular sliding groove 615, the cross section of the adjusting rod 606 is triangular, a plurality of driving tooth openings 618 are arranged on the three outer side walls of the adjusting rod 606, one end of the adjusting rod 606 is connected with an adjusting block 619, the adjusting block 619 is arranged on the side of the side fixing frame 613, a plurality of tapered tooth grooves 620 are arranged on the side wall of the adjusting block 619, and a plurality of transmission tooth openings 621 are arranged on the circumferential outer wall of the adjusting block 619; the tapered tooth groove 620 can be in meshing state or separation state with the tapered tooth opening 614; the inner cavity of the protective cover 608 is provided with a motor two 622, the output end of the motor two 622 is connected with a gear two 623, the side wall of the support frame 601 is rotationally provided with a wide gear three 624, the gear two 623 is meshingly connected with the wide gear three 624, the wide gear three 624 is meshingly connected with the transmission tooth opening 621, and the tooth opening of the wide gear three 624 has a preset length along the axial direction, so that the wide gear three 624 can always be in meshing state with the transmission tooth opening 621 when the adjusting block 619 moves along the axial direction. The fine drying rod 605 is a curved plate structure, one end of the fine drying rod 605 is connected with a rotating block 625, the rotating block 625 is rotationally arranged on the inner side wall of the drying frame 604, the side wall of the rotating block 625 is a circular arc structure, a tooth opening one 626 is arranged on the side wall of the rotating block 625, and the tooth opening one 626 is meshingly connected with the driving tooth opening 618.

[0025] In the application, the motor two 622 in the inner cavity of the protective cover 608 is started to drive the gear two 623 at the output end to rotate, the gear two 623 drives the wide gear three 624 to rotate, and the wide gear three 624 is always in meshing with the transmission tooth port 621 on the circumferential outer wall of the adjusting block 619, thereby driving the adjusting block 619 and the connected adjusting rod 606 to rotate synchronously. Since the adjusting rod 606 is slidingly arranged in the triangular sliding groove 615, and the cross section of the adjusting rod 606 is triangular, the adjusting rod 606 can drive the drying rack 604 to rotate synchronously when the adjusting rod 606 rotates. The drying rack 604 is arranged between the side fixed plate 612 and the side fixed frame 613, so the rotation of the drying rack 604 will not affect the rotating screen cylinder 603. When the adjusting block 619 drives the adjusting rod 606 to move forward, the tapered tooth groove 620 on the side wall of the adjusting block 619 will gradually mesh with the tapered tooth port 614 on the side fixed plate 612 of the rotating screen cylinder 603. At this time, the rotating power of the adjusting block 619 will be transmitted to the side fixed plate 612 through the meshing of the tapered tooth groove 620 and the tapered tooth port 614, thereby driving the rotating screen cylinder 603 to rotate synchronously in the annular rotating groove 611 of the support frame 601. The rotating screen cylinder 603 forms a centrifugal spin-drying effect on the plastic particles. At the same time, the driving tooth port 618 on the outer side wall of the adjusting rod 606 will drive multiple fine drying rods 605 to rotate and fold towards the drying rack 604 through the tooth port one 626 during the forward sliding process of the adjusting rod 606, avoiding the blocking of the fine drying rods 605 when the rotating screen cylinder 603 centrifugally spins water. The drying rack 604 rotates with the adjusting rod 606, and the air inlet channel 616 in the inner cavity of the drying rack 604 can continuously deliver high-temperature airflow, realizing efficient dewatering and preliminary drying of the plastic particles in cooperation with the centrifugal effect of the rotating screen cylinder 603. When the adjusting block 619 drives the adjusting rod 606 to move backward, the tapered tooth groove 620 on the side wall of the adjusting block 619 will gradually separate from the tapered tooth port 614 on the side fixed plate 612. The rotating screen cylinder 603 loses the rotating power transmitted by the adjusting block 619, and thus stops rotating in the annular rotating groove 611 of the support frame 601. At the same time, the driving tooth port 618 on the outer side wall of the adjusting rod 606 drives multiple fine drying rods 605 to rotate and unfold away from the drying rack 604 through the meshing transmission with the tooth port one 626 on the side wall of the rotating block 625 during the backward sliding of the adjusting rod 606 along the triangular sliding groove 615 in the inner cavity of the drying rack 604. At this time, the drying rack 604 still rotates with the adjusting rod 606, and the unfolded fine drying rods 605 rotate synchronously with the drying rack 604, forming a stirring and dispersing effect on the plastic particles accumulated in the rotating screen cylinder 603, avoiding water residue caused by particle accumulation. At the same time, the air inlet channel 616 in the inner cavity of the drying rack 604 continuously delivers high-temperature airflow, cooperating with the stirring action of the fine drying rods 605 to finely dry the plastic particles, further reducing the moisture content of the particles.

[0026] The present application can be in meshing state or separation state with the tapered tooth opening 614 of the side plate 612 at one end of the rotating screen cylinder 603 by designing the tapered tooth groove 620 of the side wall of the adjusting block 619; in the meshing state, the rotating power of the adjusting block 619 can drive the rotating screen cylinder 603 to rotate synchronously, and the rotating screen cylinder 603 forms a centrifugal spin-drying effect on the plastic particles, and at the same time, a plurality of fine drying rods 605 can be synchronously adjusted to rotate towards the drying rack 604 to avoid the blocking of the fine drying rods 605 when the rotating screen cylinder 603 is centrifugally spun; in the separation state, the rotating screen cylinder 603 loses the rotating power transmitted by the adjusting block 619, and then stops rotating in the annular rotating groove 611 of the support frame 601; at the same time, the adjusting rod 606 slides backward along the triangular sliding groove 615 in the inner cavity of the drying rack 604, and the driving tooth opening 618 on the outer side wall thereof is in meshing transmission with the tooth opening one 626 on the side wall of the rotating block 625, thereby driving a plurality of fine drying rods 605 to rotate away from the drying rack 604; at this time, the drying rack 604 still rotates with the adjusting rod 606, and the expanded fine drying rods 605 rotate synchronously with the drying rack 604, thereby forming a stirring and dispersing effect on the plastic particles accumulated in the rotating screen cylinder 603, and avoiding the residual moisture caused by the accumulation of particles; the structure design meets the needs of rapid centrifugal dewatering of plastic particles in the initial stage, and can be switched to a deep drying mode after dewatering, thereby realizing flexible conversion between different drying modes, without the need for multiple processing equipment to operate independently, greatly shortening the pretreatment time and improving the drying quality of plastic particles.

[0027] The present application designs the wide gear three 624 as a tooth opening structure with an axial preset length, ensures that the wide gear three 624 is always in meshing transmission with the driving tooth opening 621 on the circumferential outer wall of the adjusting block 619 when the adjusting block 619 moves in the axial direction, and guarantees uninterrupted power transmission; at the same time, the triangular sliding groove 615 in the inner cavity of the drying rack 604 is designed to be matched with the triangular adjusting rod 606, thereby guaranteeing that the drying rack 604 stably rotates synchronously with the adjusting rod 606.

[0028] As another embodiment of the present application, the side wall of the drying rack 604 is provided with a plurality of exhaust holes 617 in communication with the inner cavity of the air inlet channel 616; the adjusting block 619 is connected with an air inlet pipe 627 on one side wall and a conversion pipe 628 on the other side wall, the air inlet pipe 627 and the conversion pipe 628 are in communication through a plurality of communication holes 629, the conversion pipe 628 is movably arranged outside the side wall at one end of the drying rack 604, and the inner cavity of the conversion pipe 628 is in communication with the inner cavity of the air inlet channel 616. The external high-temperature airflow enters through the air inlet pipe 627 and then flows into the inner cavity of the conversion pipe 628 through the plurality of communication holes 629; since the conversion pipe 628 is movably arranged outside the side wall at one end of the drying rack 604 and its inner cavity is in communication with the inner cavity of the air inlet channel 616 of the drying rack 604, the high-temperature airflow will further enter the air inlet channel 616; finally, the high-temperature airflow in the air inlet channel 616 is discharged through the plurality of exhaust holes 617 opened in the side wall of the drying rack 604, directly acting on the plastic particles in the rotating sieve cylinder 603, and in the centrifugal dehydration mode, the radial high-temperature airflow discharged from the exhaust holes 617 can assist in removing the residual moisture on the surface of the plastic particles, improving the centrifugal dehydration efficiency; in the stirring and drying mode, the high-temperature airflow can cooperate with the stirring action of the fine drying rod 605 to uniformly act on the dispersed plastic particles, realizing fine drying, and at the same time, the movable design of the conversion pipe 628 can adapt to the rotating action of the drying rack 604, ensuring the continuity of the airflow conveying process.

[0029] As another embodiment of the application, the outer side wall of the drying rack 604 is further connected with a plurality of adjusting air pipes 630, the side wall of the rotating block 625 is connected with a plug pipe 631, the side wall of the fine drying rod 605 is arranged with a plurality of second air exhaust holes 632, the inner cavity of the plug pipe 631 is in communication with the plurality of second air exhaust holes 632 through the inner cavity of the fine drying rod 605; the plug pipe 631 is movably arranged in the inner cavity of the adjusting air pipe 630, the other end of the adjusting air pipe 630 is in communication with the inner cavity of the air inlet channel 616; the inner cavity of the adjusting air pipe 630 is arranged with two stop blocks 633 arranged in diagonal positions, the input end of the plug pipe 631 is arranged with two air inlets 634 arranged in diagonal positions, and the stop block 633 can form a closed state for the air inlet 634 when the plug pipe 631 rotates. The inner cavity of the adjusting air pipe 630 is designed with two stop blocks 633 arranged in diagonal positions, the input end of the plug pipe 631 is arranged with two air inlets 634 arranged in diagonal positions, and the stop block 633 can form a closed state for the air inlet 634. During the operation of the equipment, the high-temperature gas flow in the air inlet channel 616 will flow into the inner cavity of the adjusting air pipe 630 connected thereto; when the fine drying rod 605 is in the folded state, the rotating block 625 connected thereto drives the plug pipe 631 to rotate to a specific angle at the same time, at which time the stop block 633 arranged in diagonal positions in the inner cavity of the adjusting air pipe 630 forms corresponding closure with the air inlet 634 arranged in diagonal positions at the input end of the plug pipe 631, and the high-temperature gas flow cannot enter the fine drying rod 605 through the plug pipe 631, but is output only through the first air exhaust hole 617 of the drying rack 604, which meets the auxiliary drying demand in the centrifugal water throwing stage; when the fine drying rod 605 is switched to the unfolded state, the rotating block 625 drives the plug pipe 631 to rotate, so that the air inlet 634 is dislocated from the stop block 633 to remove the closure, the high-temperature gas flow in the adjusting air pipe 630 enters the inner cavity of the plug pipe 631 through the air inlet 634, and then is discharged from the plurality of second air exhaust holes 632 in the side wall of the fine drying rod 605, which realizes close and accurate high-temperature drying of the dispersed plastic particles in cooperation with the stirring action of the fine drying rod 605, further improves the drying uniformity and efficiency, and avoids the invalidity of the output of the high-temperature gas flow from the plurality of second air exhaust holes 632 when the fine drying rod 605 is in the folded state.

[0030] As another embodiment of the present application, the air feeding assembly 7 comprises a main pipe 701 arranged on the top of the support base 402, the main pipe 701 is arranged in the inner cavity of the rotating frame 401 with a gap and extends above the rotating frame 401, the input end of the main pipe 701 is connected with the external air supply device through the air pipe 702, the top of the main pipe 701 is rotationally connected with a shunt pipe 703, the output end of the shunt pipe 703 is connected with a plurality of flexible pipes 704, and the output end of the flexible pipe 704 is connected with the air inlet pipe 627. By rotationally arranging the shunt pipe 703 on the top of the main pipe 701, when the rotating assembly 4 drives the rotating frame 401 and the top annular array of the plastic treatment assembly 6 to synchronously rotate circumferentially, the shunt pipe 703 can flexibly rotate along the movement direction of the plastic treatment assembly 6, avoiding the problems of over-bending and excessive pulling of the flexible pipe 704 due to the circumferential displacement of the plastic treatment assembly 6.

[0031] As another embodiment of the present application, the guide assembly 5 comprises a fixed support 501 arranged on the top of the support base 402, the bottom of the fixed support 501 is connected with a special-shaped guide rail 503 through a plurality of fixed columns 502, the bottom of the special-shaped guide rail 503 is a circular arc structure, and the special-shaped guide rail 503 is an annular meandering path; the circumferential outer wall of the air inlet pipe 627 is rotationally connected with a guide block 635, the top of the guide block 635 is movably connected with a sliding block 636, the top of the sliding block 636 is arranged with a semicircular groove 637, and the sliding block 636 is in sliding fit with the circular arc structure at the bottom of the special-shaped guide rail 503 through the semicircular groove 637.

[0032] According to the present application, the special-shaped guide rail 503 is designed, when the rotating assembly 4 drives the rotating frame 401 and the plastic treatment assembly 6 on the top to move circumferentially during the operation of the equipment, the air inlet pipe 627 of the plastic treatment assembly 6 moves synchronously, and the guide block 635 on the circumferential outer wall of the air inlet pipe 627 drives the sliding block 636 on the top to move synchronously; since the sliding block 636 is in sliding fit with the circular arc structure at the bottom of the special-shaped guide rail 503 through the semicircular groove 637 on the top, and the special-shaped guide rail 503 is fixed on the top of the support base 402 through the fixed columns 502 and the fixed support 501 and forms an annular meandering path, the sliding block 636 will adaptively slide along the meandering path of the special-shaped guide rail 503 while moving circumferentially with the plastic treatment assembly 6; the adaptive sliding can make the sliding block 636 drive in different directions, such as Figure 16As shown, when the plastic processing assembly 6 is located at the feeding station 8 and the spin-drying station 9, the position of the slide block 636 in the special-shaped guide rail 503 can drive the air inlet pipe 627 and the adjusting block 619 to move close to the side fixed plate 612 at one end of the rotating sieve cylinder 603 through the guide block 635, so that the tapered tooth groove 620 on the side wall of the adjusting block 619 is engaged with the tapered tooth opening 614 of the side fixed plate 612, and the adjusting block 619 drives the adjusting rod 606 to slide forward along the triangular sliding groove 615 of the drying frame 604, and drives the plurality of fine drying rods 605 to move close to the drying frame 604. At this time, the rotating power of the adjusting block 619 can be transmitted to the rotating sieve cylinder 603, driving the rotating sieve cylinder 603 to rotate at high speed in the annular rotating groove 611, realizing the centrifugal spin-drying operation of the plastic particles, and the fine drying rods 605 in the closed state can avoid blocking the movement of the plastic particles during the centrifugal spin-drying process; when the plastic processing assembly 6 enters the fine drying station 10 from the spin-drying station 9, the slide block 636 will deviate to the feeding station 8 when sliding in the special-shaped guide rail 503, so that the slide block 636 can drive the air inlet pipe 627 and the adjusting block 619 to move away from the side fixed plate 612 at one end of the rotating sieve cylinder 603 through the guide block 635, so that the tapered tooth groove 620 on the side wall of the adjusting block 619 is gradually separated from the tapered tooth opening 614 of the side fixed plate 612, and the rotating sieve cylinder 603 loses the rotating power transmitted by the adjusting block 619 and slowly stops rotating in the annular rotating groove 611 of the support frame 601, ending the centrifugal spin-drying process; at the same time, the adjusting block 619 drives the adjusting rod 606 to slide backward along the triangular sliding groove 615 of the drying frame 604, and the driving tooth opening 618 on the outer side wall of the adjusting rod 606 is engaged with the tooth opening 626 on the side wall of the rotating block 625 to drive the plurality of fine drying rods 605 to rotate and expand away from the drying frame 604; when the plastic processing assembly 6 completely enters the fine drying station 10, the fine drying rods 605 have been completely expanded, and the drying frame still rotates with the adjusting rod 606 at this time, so that the expanded fine drying rods 605 can fully stir and disperse the plastic particles accumulated in the rotating sieve cylinder 603, avoiding the residual moisture caused by particle agglomeration; when the plastic processing assembly 6 enters the discharging station 11 from the fine drying station 10, the track of the special-shaped guide rail 503 deviates upward, so that the slide block 636 can drive the support frame 601 to rotate on the top of the fixed frame 607 when sliding in the special-shaped guide rail 503, so that the rotating sieve cylinder 603 forms an inclined state, facilitating discharging; this process does not need additional power to drive the state adjustment, and accurately adapts to the different process requirements of the centrifugal spin-drying, stirring and drying of the plastic particles and discharging, ensuring the automation and continuity of the pretreatment process.

[0033] The present application designs a special-shaped guide rail 503 in a circular meandering path, so that the slider 636 will adaptively slide along the meandering path of the special-shaped guide rail 503 while moving along the circumference of the plastic treatment assembly 6. This adaptive sliding can realize the automatic state switching of the plastic treatment assembly 6 during circulation between different stations: in the feeding station 8 and the spin-drying station 9, the driving adjustment block 619 is engaged with the rotating screen cylinder 603, the fine drying rod 605 is folded, and the centrifugal water spinning and auxiliary drying are simultaneously opened; when the spin-drying station 9 transitions to the fine drying station 10, the driving adjustment block 619 is separated from the rotating screen cylinder 603, the fine drying rod 605 is unfolded, and the automatic switching to the stirring and fine drying mode is realized; when the fine drying station 10 transitions to the discharging station 11, the rotating support frame 601 is rotated to incline the rotating screen cylinder 603, providing convenience for subsequent discharging; the entire process relies on the track design of the special-shaped guide rail 503, without the need for additional driving elements to control the actions of each component, which can precisely match the full-process requirements of centrifugal water spinning, stirring and drying, and inclined discharging, greatly improving the automation degree and process coherence of plastic particle pretreatment.

[0034] As another embodiment of the present application, the plug 638 is arranged in the inner cavity of one end of the rotating screen cylinder 603, the push-pull block 639 is connected to the side wall of the plug 638, the mechanical clamp head of the mechanical arm mechanism 3 can clamp the push-pull block 639, and the plug 638 is driven to be inserted and pulled out of the inner cavity of the rotating screen cylinder 603. When the plastic treatment assembly 6 is located in the discharging station 11, the plug 638 is removed by the mechanical clamp head of the mechanical arm mechanism 3, so that the plastic particles in the rotating screen cylinder 603 can enter the feeding hopper of the injection molding machine body 1 for injection molding operation. When the plastic treatment assembly 6 is located in the feeding station 8, the plug 638 is inserted into the rotating screen cylinder 603 after the plastic particles are fed into the rotating screen cylinder 603 by the external feeding device, so as to facilitate subsequent operation.

[0035] Working principle: the embodiment provides a kind of injection molding equipment for plastic waste recycling, when using, first by rotating assembly 4 control plastic processing component 6 sequentially flow to feeding station 8, spin-dry station 9, fine drying station 10 and discharging station 11, realize continuous pretreatment process;When plastic processing component 6 flows to feeding station 8, external feeding equipment is sent to the inner cavity of rotary screen cylinder 603 after the broken, washed plastic particles, after feeding, mechanical arm mechanism 3 clamps push-pull block 639 inserts plug 638 into rotary screen cylinder 603 sealing;When plastic processing component 6 flows to spin-dry station 9, slide block 636 is limited by special-shaped guide rail 503, so that adjusting block 619 and side fixed plate 612 are in close state, conical gear slot 620 and conical gear port 614 are in meshing state, and multiple fine drying rods 605 are in close state;Motor two 622 starts, and power is transmitted through gear two 623, wide gear three 624 and transmission gear port 621 meshing, drives adjusting block 619, adjusting rod 606 and drying rack 604 synchronous rotation, and rotary screen cylinder 603 is driven to rotate at high speed in annular rotating groove 611 by the meshing of conical gear slot 620 and conical gear port 614, while the external gas supply equipment of gas supply assembly 7 sends high-temperature gas flow to air inlet pipe 627 through gas delivery pipe 702, main pipeline 701, shunt pipe 703 and flexible pipe 704, the gas flow enters air inlet passage 616 through communication hole 629 and conversion pipe 628, and finally is discharged radially from air outlet hole one 617, cooperating with the centrifugal force of rotary screen cylinder 603 to quickly spin off the water on the surface of plastic particles, and the spun-off water flows into water storage bin 609 for temporary storage through the screen structure of rotary screen cylinder 603;Subsequently, rotating frame 401 drives plastic processing component 6 to flow to fine drying station 10, during the flow process, slide block 636 slides along the tortuous path of special-shaped guide rail 503, drives adjusting block 619 to move away from side fixed plate 612, conical gear slot 620 and conical gear port 614 are separated, and rotary screen cylinder 603 loses power and gradually stops rotating;At the same time, adjusting rod 606 slides backward, drives multiple fine drying rods 605 to spread away from drying rack 604 by the meshing transmission of driving gear port 618 and gear port one 626, and rotating block 625 drives insertion pipe 631 to rotate, so that air inlet 634 of insertion pipe 631 is dislocated with stop block 633 in adjusting air pipe 630, high-temperature gas flow flows into adjusting air pipe 630 from air inlet passage 616, enters the inner cavity of fine drying rod 605 through air inlet 634 and insertion pipe 631, and finally is discharged from air outlet hole two 632;Drying rack 604 continuously drives the rotating of spreaded fine drying rod 605, and the high-temperature gas flow discharged from air outlet hole two 632 acts on the dispersed plastic particles at close range, realizes fine drying, and further removes internal crystallization water and residual moisture;When plastic processing component 6 flows from fine drying station 10 to discharging station 11, slide block 636 slides along the inclined path of special-shaped guide rail 503, drives support frame 601 to rotate on fixed frame 607, so that rotary screen cylinder 603 is in an inclined state.The mechanical arm mechanism 3 on the other side holds the push-pull block 639 to pull out the plug 638, and the plastic particles in the inclined rotating sieve cylinder 603 are automatically slid into the feeding hopper of the injection molding machine body 1 after dehydration and drying. After feeding, the plastic treatment assembly 6 continues to circulate with the rotating frame 401 and enters the next round of pretreatment cycle.

[0036] The embodiments of the present application are disclosed, but not limited to the preferred embodiments, and the ordinary skilled in the art can easily understand the spirit of the present application according to the above embodiments, and make different inferences and changes, as long as they do not deviate from the spirit of the present application, they are within the protection scope of the present application.

Claims

1. An injection molding apparatus for recycling plastic waste, characterized by, Including injection molding machine body (1), the injection molding machine body (1) side arrangement has feeding mechanism (2) and mechanical arm mechanism (3), the mechanical arm mechanism (3) has multiple, another the mechanical arm mechanism (3) is arranged in the other side of the injection molding machine body (1); The feeding mechanism (2) is composed of a rotating assembly (4), a guide assembly (5), a plurality of plastic processing assemblies (6) and a gas feeding assembly (7); the rotating assembly (4) includes a rotating frame (401); a plurality of the plastic processing assemblies (6) are arranged in an annular array on the top of the rotating frame (401); The plastic processing assembly (6) includes a support frame (601), a cover (602) is arranged inside the support frame (601), a rotating sieve cylinder (603) is arranged in the inner cavity of the cover (602), a drying frame (604) is arranged in the inner cavity of the rotating sieve cylinder (603), a plurality of fine drying rods (605) are movably arranged on the outer side wall of the drying frame (604), and an adjusting rod (606) is slidably arranged in the inner cavity of the drying frame (604); when the adjusting rod (606) slides forward, the plurality of fine drying rods (605) can be controlled to form a folded state; when the adjusting rod (606) slides backward, the plurality of fine drying rods (605) can be controlled to form an unfolded state; The guide assembly (5) is arranged above the plastic processing assembly (6), and the guide assembly (5) can control the sliding state of the adjusting rod (606); When the plurality of fine drying rods (605) form the folded state, the rotating sieve cylinder (603) can form a centrifugal water-shaking rotary motion state for the plastic particles in the inner cavity, and the drying frame (604) can output radial high-temperature gas flow for the plastic particles; when the plurality of fine drying rods (605) form the unfolded state, the rotating sieve cylinder (603) can stop rotating, and the plurality of fine drying rods (605) in the unfolded state can rotate to form a stirring state for the plastic particles and output high-temperature gas flow for the plastic particles in the stirring state.

2. The injection molding apparatus for recycling plastic waste according to claim 1, wherein, The rotating assembly (4) further includes a support seat (402), an annular sliding groove is formed in the top of the support seat (402), an annular sliding strip (403) is connected to the bottom of the rotating frame (401), and the rotating frame (401) is rotatably arranged in the annular sliding groove through the annular sliding strip (403); a motor one (404) is arranged in the inner cavity of the support seat (402), a gear one (405) is connected to the output end of the motor one (404), an annular block (406) is connected to the bottom of the rotating frame (401), a toothed opening is arranged on the circumferential outer wall of the annular block (406), and the annular block (406) is connected with the gear one (405) through the toothed opening.

3. The injection molding apparatus for recycling plastic waste according to claim 2, wherein, The plastic processing assembly (6) further comprises a fixed frame (607) arranged on the top of the rotating frame (401), the support frame (601) is arranged on the top of the fixed frame (607), and one end of the bottom of the support frame (601) is rotationally connected with the fixed frame (607); the inside of the support frame (601) is further provided with a protective cover (608), and the protective cover (608) and the cover body (602) form a water storage bin (609) therebetween, the bottom of the water storage bin (609) is provided with a drain hole, and a plug (610) is inserted in the drain hole.

4. The injection molding apparatus for recycling plastic waste according to claim 3, wherein, An annular rotating groove (611) is formed in the side wall of the support frame (601), the rotating sieve cylinder (603) is rotationally arranged in the annular rotating groove (611), and the rotating sieve cylinder (603) is a cylindrical sieve net structure; one end of the rotating sieve cylinder (603) is connected with a side fixing plate (612), and the other end of the rotating sieve cylinder (603) is connected with a side fixing frame (613) on the inner side wall; a tapered tooth opening (614) is arranged on one side wall of the side fixing plate (612), and the drying frame (604) is rotationally arranged between the side fixing plate (612) and the side fixing frame (613); the inner cavity of the drying frame (604) is provided with a triangular chute (615) and a plurality of air inlet channels (616); The adjusting rod (606) is slidingly arranged in the triangular chute (615), the cross section of the adjusting rod (606) is triangular, a plurality of driving tooth openings (618) are arranged on the three outer side walls of the adjusting rod (606), one end of the adjusting rod (606) is connected with an adjusting block (619), the adjusting block (619) is arranged on the side of the side fixing frame (613), a plurality of tapered tooth grooves (620) are arranged on the side wall of the adjusting block (619), and a plurality of transmission tooth openings (621) are arranged on the circumferential outer wall of the adjusting block (619); the tapered tooth grooves (620) can be in meshing or disengaging state with the tapered tooth opening (614); A motor two (622) is arranged in the inner cavity of the protective cover (608), a gear two (623) is connected with the output end of the motor two (622), a wide gear three (624) is rotationally arranged on the side wall of the support frame (601), the gear two (623) is meshingly connected with the wide gear three (624), the wide gear three (624) is meshingly connected with the transmission tooth opening (621), and the tooth opening of the wide gear three (624) has a predetermined length along the axial direction, so that when the adjusting block (619) moves along the axial direction, the wide gear three (624) can always be in meshing state with the transmission tooth opening (621).

5. The injection molding apparatus for recycling plastic waste according to claim 4, wherein The fine drying rod (605) is a curved plate structure, one end of the fine drying rod (605) is connected with a rotating block (625), the rotating block (625) is rotationally arranged on the inner side wall of the drying frame (604), the side wall of the rotating block (625) is a circular arc structure, a tooth opening one (626) is arranged on the circular arc structure of the side wall of the rotating block (625), and the tooth opening one (626) is meshingly connected with the driving tooth opening (618).

6. The injection molding apparatus for recycling plastic waste according to claim 5, wherein The side wall of the drying rack (604) is provided with a plurality of exhaust holes (617), and the plurality of exhaust holes (617) are in communication with the inner cavity of the air inlet channel (616); one side wall of the adjusting block (619) is connected with an air inlet pipe (627), and the other side wall is connected with a conversion pipe (628); the air inlet pipe (627) and the conversion pipe (628) are in communication through a plurality of communication holes (629); the conversion pipe (628) is movably arranged on the outer side wall of one end of the drying rack (604), and the inner cavity of the conversion pipe (628) is in communication with the inner cavity of the air inlet channel (616).

7. The injection molding apparatus for recycling plastic waste according to claim 6, wherein The outer side wall of the drying rack (604) is further connected with a plurality of adjusting air pipes (630), the side wall of the rotating block (625) is connected with a cannula (631), the side wall of the fine drying rod (605) is provided with a plurality of exhaust holes (632), and the inner cavity of the cannula (631) is in communication with the plurality of exhaust holes (632) through the inner cavity of the fine drying rod (605); The cannula (631) is movably arranged in the inner cavity of the adjusting air pipe (630), and the other end of the adjusting air pipe (630) is in communication with the inner cavity of the air inlet channel (616); the inner cavity of the adjusting air pipe (630) is provided with two stop blocks (633), and the two stop blocks (633) are arranged in a diagonal orientation; the input end of the cannula (631) is provided with two air inlets (634), and the two air inlets (634) are arranged in a diagonal orientation; when the cannula (631) rotates, the stop blocks (633) can form a closed state for the air inlets (634).

8. The injection molding apparatus for recycling plastic waste according to claim 7, wherein, The air supply assembly (7) comprises a main pipe (701) arranged on the top of the support seat (402), the main pipe (701) is arranged in the inner cavity of the rotating frame (401) with a gap, and extends above the rotating frame (401); the input end of the main pipe (701) is connected with an external air supply device through an air supply pipe (702); the top of the main pipe (701) is rotatably connected with a shunt pipe (703); the output end of the shunt pipe (703) is connected with a plurality of flexible pipes (704); and the output end of the flexible pipe (704) is connected with the air inlet pipe (627).

9. The injection molding apparatus for recycling plastic waste according to claim 8, wherein, The guide assembly (5) comprises a fixed support (501) arranged on the top of the support seat (402); the bottom of the fixed support (501) is connected with a special-shaped guide rail (503) through a plurality of fixed columns (502); the bottom of the special-shaped guide rail (503) is a circular arc structure; the special-shaped guide rail (503) is an annular zigzag path; the circumferential outer wall of the air inlet pipe (627) is rotatably connected with a guide block (635); the top of the guide block (635) is movably connected with a sliding block (636); the top of the sliding block (636) is provided with a semicircular groove (637); and the sliding block (636) is slidably connected with the circular arc structure at the bottom of the special-shaped guide rail (503) through the semicircular groove (637).

10. The injection molding apparatus for recycling plastic waste according to claim 9, wherein, The rotating screen cylinder (603) is arranged in the inner cavity of one end and is inserted with a plug (638). The side wall of the plug (638) is connected with a push-pull block (639). The mechanical clamp head of the mechanical arm mechanism (3) can clamp the push-pull block (639), and drives the plug (638) to be inserted and pulled out in cooperation with the inner cavity of the rotating screen cylinder (603).

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