Shoe sole waste material circulating device for shoe manufacturing

Abstract

The invention discloses a shoe sole waste circulating device for shoe manufacturing, and relates to the technical field of clothing production, the shoe sole waste circulating device comprises a shell and a crushing mechanism, the crushing mechanism comprises a crushing roller and an arc-shaped sieve, the crushing roller is rotatably connected with the inner side wall of the shell, the arc-shaped sieve is fixedly connected with the inner side wall of the shell, and a conical sieve is arranged below the bottom end of the arc-shaped sieve; fixing plates are arranged on the two sides of the conical sieve. Through cooperation of the smashing roller and the arc-shaped screen, waste can be accurately cut into specific particle sizes, secondary screening is conducted in combination with the conical screen, the waste with the qualified particle sizes directly falls into the bin, through the design of the material returning mechanism, the waste which is not fully cut can automatically return to the smashing mechanism to be treated again, the smashing degree of the waste is effectively improved, and the labor intensity of workers is reduced. And it is ensured that all the finally obtained waste particles can meet the feeding requirement of a subsequent jet mill, and the waste treatment quality and efficiency are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of clothing production, and particularly to a recycling device for sole waste in shoe manufacturing. Background Art

[0002] In sole manufacturing, large sole materials such as rubber, plastic, leather, or fabric need to be cut according to the designed sole pattern first. In this process, due to the irregular shape of the sole, a large amount of scraps will be cut off, and the edge parts of the materials will be discarded. These scraps cannot be directly used in sole production and thus become waste.

[0003] The waste generated in sole production can be recycled. The sole waste is crushed into smaller pieces by a crusher and further ground into finer particles by a jet mill. For some sole waste containing rubber components, desulfurization treatment is also required to restore a certain degree of plasticity. Then comes melt granulation, where the treated particles are heated to a molten state and extruded through a granulator to form uniform plastic or rubber particles. These recycled particles can be reintroduced as raw materials into the production of soles or other plastic products to achieve resource recycling.

[0004] In the recycling process of sole waste, key processes such as coarse crushing, fine crushing, and jet milling are successively experienced. Among them, the fine crushing process and the jet milling process have extremely strict standards for the feed particle size. Especially in the jet milling process, because even a slight deviation in particle size is likely to have a significant impact on the quality and performance of the final product. However, the size of the sole production scraps is larger than that of the waste generated by grinding. When some larger-sized sole production scraps are fed into the coarse crushing equipment, due to their own size far exceeding the normal range, when the coarse crushing equipment operates at a relatively high speed, these scraps cannot obtain sufficient effective cutting time during the short moment passing through the blades. It is extremely easy to cause the particle size of the waste after coarse crushing to be too large, far from meeting the particle size standard required by the subsequent fine crushing process, and unable to meet the strict requirements of the subsequent fine crushing process for particle size, thus affecting the quality and utilization value of the final recycled sole waste product. Summary of the Invention

[0005] The purpose of the present invention is to provide a recycling device for sole waste in shoe manufacturing to solve the problem of insufficient coarse crushing of sole waste proposed in the above background art.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shoe sole waste recycling device for shoe manufacturing, comprising a shell and a crushing mechanism, the crushing mechanism comprising a crushing roller and an arc-shaped screen, the crushing roller is rotatably connected to the inner wall of the shell, the arc-shaped screen is fixedly connected to the inner wall of the shell, a conical screen is provided below the bottom end of the arc-shaped screen, the middle part of the conical screen is arched upward, fixed plates are provided on both sides of the conical screen, the fixed plates are installed on the inner wall of the shell, the conical screen is used to filter the fully crushed waste and recycle the remaining waste; a return mechanism is provided on both sides of the crushing mechanism, the return mechanism comprises two vertically arranged tension wheels, the two tension wheels are rotatably connected to the inner wall of the shell, and the two tension wheels are fixedly connected to the inner wall of the shell. A tensioning belt is transmittedly connected between the tensioning wheels, and the outer surface of the tensioning belt is fixedly connected to a conical groove seat, and a conical groove is opened inside the conical groove seat. A pad is installed in the groove of the conical groove seat, and the middle of the conical groove seat is rotatably connected to the rotating shaft. The surface of the rotating shaft is fixedly connected to the return plate. Both ends of the conical groove seat are fixedly connected to the side plates, and a torsion spring is provided between the conical groove seat and the side plates. Both ends of the rotating shaft are rotatably connected to the side plates, one end of the torsion spring is fixedly connected to the side wall of the return plate, and the other end of the torsion spring is fixedly connected to the side plates. Two limit seats are provided above the crushing mechanism, and the limit seats are installed on the inner side wall of the shell. The return mechanism is used to put the waste material dropped from the fixed plate into the crushing mechanism again for crushing processing.

[0007] Preferably, a baffle is installed at the top of the shell, a dividing plate is installed at the bottom of the shell, air inlets are provided on both sides of the shell, two air outlets are provided at the top of the shell, and axial flow fans are installed inside the air outlets and the air inlets.

[0008] Preferably, two servo motors 2 are installed on one side wall of the shell, the output end of the servo motor 2 passes through the side wall of the shell and is fixedly connected to the outer crushing roller, the other ends of the two crushing rollers located on the outer side are transmission-connected to a gear set 1, and a belt mechanism 1 is transmission-connected between the tensioning wheel and the gear set 1.

[0009] Preferably, a servo motor 1 is installed on the other side wall of the shell, the output end of the servo motor 1 passes through the side wall of the shell and is fixedly connected to the middle crushing roller, and the other side of the two middle crushing rollers is fixedly connected to a gear set 2, and the two middle crushing rollers rotate in opposite directions through the gear set 2.

[0010] Preferably, swing assemblies are provided on both sides of the conical screen, and the swing assemblies include a turntable, a deflection column is fixedly connected to the side of the turntable, and a strip frame is slidably connected to the outer wall of the deflection column. Both sides of the strip frame are fixedly connected to top columns, and one end of the top column is fixedly connected to a connecting plate, which is fixedly connected to the side wall of the conical screen.

[0011] Preferably, the outer side wall of the top column is slidably connected to a connecting seat, and the connecting seat is fixedly connected to the inner side wall of the shell.

[0012] Preferably, a second belt mechanism is drivingly connected between one set of crushing rollers and the turntable.

[0013] Preferably, the aperture of the sieve holes of the conical sieve is smaller than that of the arc sieve, and the upper surface of the arc sieve is concave inward to form an arc surface corresponding to the crushing rollers.

[0014] Preferably, the recycling treatment method for sole waste includes the following steps:

[0015] Step 1, feeding waste: Collect the production waste in the sole production line and feed it into the housing for crushing treatment.

[0016] Step 2, coarse crushing: Through the combined action of four crushing rollers and the arc sieve, the waste is crushed into coarse crushed materials of 50 - 100 mm.

[0017] Step 3, fine crushing: Feed the waste of the coarse crushed materials into a jaw crusher to crush the waste into fine crushed materials of 1 - 5 mm.

[0018] Step 4, airflow grinding: Feed the raw materials of the fine crushed materials into an airflow mill to grind the fine crushed materials into ground powder.

[0019] Step 5, microwave desulfurization: Feed the ground powder into a microwave desulfurization reactor, and destroy the sulfur bonds through microwave heating to achieve material regeneration.

[0020] Step 6, granulation and regeneration: The desulfurized plastic is made into granular raw materials through melt processing.

[0021] The recycling device for sole waste used in footwear manufacturing is applied to Step 2 of the recycling treatment method for sole waste.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In the present invention, through the cooperation of the crushing rollers and the arc sieve, the waste can be accurately cut into specific particle sizes, and then combined with the conical sieve for secondary screening, so that the waste with qualified particle sizes directly falls into the chamber. Through the design of the return material mechanism, the waste that is not fully cut can automatically return to the crushing mechanism for re - treatment, effectively improving the crushing degree of the waste, ensuring that the finally obtained waste particles can meet the feeding requirements of the subsequent airflow mill, and greatly improving the quality and efficiency of waste treatment.

[0024] 2. In the present invention, the return material plate is connected to the side plate through a torsion spring to form a V - shaped storage space, which can effectively store the waste that is not fully cut. The tension belt drives it to move to the limit seat for discharging. At the same time, with the help of the downward airflow formed by the excess air from the air outlet guided by the baffle, the waste can be further blown open to ensure that the waste on the return material plate is completely discharged, realizing the efficient and complete recycling and re - treatment of the waste that is not fully broken, improving the recycling rate of waste treatment and the working efficiency of the device.

[0025] 3. In the present invention, the return plate and the conical groove seat are connected by a torsion spring. The limit of the pad below the conical groove limits the upward folding angle of the return plate. The timing of the contact between the outer end of the return plate and the limit seat can be accurately controlled to ensure that when the waste is transported to the designated location, the return plate can be triggered by the limit seat in time to fold downward and unload the waste, thereby improving the controllability and stability of the waste recycling process.

[0026] 4. In the present invention, a specific air duct is formed by the axial flow fans installed at the air inlet and outlet. When the airflow passes through the surface of the tension belt, the fine waste materials adhering to the surface of the tension belt can be automatically blown away, keeping the tension belt clean, preventing the normal operation of the return mechanism from being affected by the adhesion and accumulation of waste materials, reducing manual maintenance costs, and improving the operational stability of the equipment;

[0027] 5. In this invention, the negative pressure effect created by the axial flow fan at the air inlet, combined with the separator, can be used to sort the waste materials according to their density after coarse crushing. Wastes of different densities are blown in different directions and fall into three chambers separated by the separator, thus achieving the classified recycling of waste materials of different materials, improving the purity of waste recycling, and enhancing the value of resource recycling.

[0028] 6. In the present invention, the turntable is driven to rotate by the second belt mechanism, and the rotation is converted into reciprocating motion by means of the deflection column and the bar frame, thereby driving the top column to swing left and right to swing the conical screen, which can effectively shake off the insufficiently crushed waste remaining on the conical screen, and promote the fully crushed waste to pass through the screen holes due to the inertia of the shaking, thereby avoiding the blockage of the screen holes, ensuring the continuity of the device in waste treatment, improving the stability and reliability of the device, ensuring the smooth progress of the waste treatment process, and improving the overall waste treatment efficiency;

[0029] 7. In this invention, the two center shredding rollers are driven by servo motor 1 and rotate in opposite directions through gear set 2, effectively entraining waste material and fully crushing it with staggered blades. The two outer shredding rollers are independently driven by servo motor 2, entraining waste material that has not been entangled in the center, expanding the crushing range and improving the comprehensiveness of waste crushing. Servo motor 2 also drives the tensioning pulley through belt mechanism 1, causing the tensioning belt to continuously rotate and push the return plate to transport material. This ensures the function of the device while minimizing motor costs and improving energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of a sole waste recycling device for shoe manufacturing according to the present invention. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the overall structure of a sole waste recycling device for shoe manufacturing according to the present invention. Figure 2 ;

[0032] Figure 3 Schematic three - dimensional structure diagram of a sole waste recycling device for shoe manufacturing according to the present invention;

[0033] Figure 4 Schematic internal structure diagram of a sole waste recycling device for shoe manufacturing according to the present invention;

[0034] Figure 5 Schematic diagram showing the working principle of a sole waste recycling device for shoe manufacturing according to the present invention;

[0035] Figure 6 Top view of a sole waste recycling device for shoe manufacturing according to the present invention;

[0036] Figure 7 Schematic structure diagram of the crushing mechanism and the material return mechanism in a sole waste recycling device for shoe manufacturing according to the present invention;

[0037] Figure 8 Schematic structure diagram of the crushing mechanism in a sole waste recycling device for shoe manufacturing according to the present invention;

[0038] Figure 9 Schematic diagram showing the working principle of the crushing mechanism in a sole waste recycling device for shoe manufacturing according to the present invention;

[0039] Figure 10 Working principle diagram of the waste bin in a sole waste recycling device for shoe manufacturing according to the present invention;

[0040] Figure 11 Schematic structure diagram of the swing assembly in a sole waste recycling device for shoe manufacturing according to the present invention;

[0041] Figure 12 Schematic structure diagram of the material return mechanism in a sole waste recycling device for shoe manufacturing according to the present invention;

[0042] Figure 13 Schematic structure diagram of the material return plate in a sole waste recycling device for shoe manufacturing according to the present invention;

[0043] Figure 14 According to the present invention Figure 13 Effect diagram of the enlarged partial structure at A;

[0044] Figure 15 Working principle diagram of waste material return in a sole waste recycling device for shoe manufacturing according to the present invention;

[0045] Figure 16 Working flow chart of the material return mechanism in a sole waste recycling device for shoe manufacturing according to the present invention.

[0046] In the figure: 1. Housing; 11. Air outlet; 12. Air inlet; 13. Baffle; 14. Material distribution plate; 2. First servo motor; 3. First belt mechanism; 4. Second servo motor; 5. Axial flow fan; 6. Crushing mechanism; 61. Crushing roller; 62. First gear set; 63. Second gear set; 64. Swing assembly; 641. Top column; 642. Strip-shaped frame; 643. Turntable; 644. Deflection column; 645. Connecting seat; 646. Connecting plate; 65. Arc-shaped sieve; 66. Fixed plate; 67. Conical sieve; 68. Second belt mechanism; 7. Return material mechanism; 71. Tension belt; 72. Tension pulley; 73. Return material plate; 74. Tapered groove seat; 75. Side plate; 76. Rotating shaft; 77. Torsion spring; 78. Cushion plate; 8. Limit seat. Specific implementation mode

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Embodiment 1: A method for recycling waste soles, comprising the following steps:

[0049] Step 1: Collect the production waste in the sole preparation production line and put it into the housing 1 for crushing treatment;

[0050] Step 2: Through the combined action of four crushing rollers 61 and the arc-shaped sieve 65, the waste is crushed into coarse crushed materials of 50 - 100 mm;

[0051] Step 3: Put the coarse crushed waste into a jaw crusher to crush the waste into fine crushed materials of 1 - 5 mm;

[0052] Step 4: Put the fine crushed material raw material into a jet mill to crush the fine crushed material into ground powder;

[0053] Step 5: Put the ground powder into a microwave desulfurization reactor, and destroy the sulfur bonds through microwave heating to achieve material regeneration;

[0054] Step 6: Make the desulfurized plastic into granular raw materials through melt processing

[0055] According to Figure 1 - Figure 16As shown: In the processing method of step two, a recycling device for shoe sole waste in shoe manufacturing is used, including a housing 1 and a crushing mechanism 6. A material distribution plate 14 is installed at the bottom end of the housing 1. The crushing mechanism 6 includes a crushing roller 61 and an arc-shaped sieve 65. The crushing roller 61 is rotatably connected to the inner side wall of the housing 1, and the arc-shaped sieve 65 is fixedly connected to the inner side wall of the housing 1. A conical sieve 67 is arranged below the bottom end of the arc-shaped sieve 65. The middle part of the conical sieve 67 arches upward. Fixing plates 66 are arranged on both sides of the conical sieve 67, and the fixing plates 66 are installed on the inner side wall of the housing 1. The conical sieve 67 is used to filter the fully crushed waste and recycle the remaining waste; Returning mechanisms 7 are arranged on both sides of the crushing mechanism 6. The returning mechanism 7 includes two tension wheels 72 arranged vertically. Both tension wheels 72 are rotatably connected to the inner side wall of the housing 1. A tension belt 71 is drivingly connected between the two tension wheels 72. A conical groove seat 74 is fixedly connected to the outer surface of the tension belt 71. A conical groove is opened inside the conical groove seat 74. A backing plate 78 is installed in the groove of the conical groove seat 74. A rotating shaft 76 is rotatably connected to the middle of the conical groove seat 74. A return plate 73 is fixedly connected to the surface of the rotating shaft 76. Side plates 75 are fixedly connected to both ends of the conical groove seat 74. The side plates 75 are L-shaped structures. A torsion spring 77 is arranged between the conical groove seat 74 and the side plates 75. Both ends of the rotating shaft 76 are rotatably connected to the side plates 75. One end of the torsion spring 77 is fixedly connected to the side wall of the return plate 73, and the other end of the torsion spring 77 is fixedly connected to the side plates 75. Two limiting seats 8 are arranged above the crushing mechanism 6, and the limiting seats 8 are installed on the inner side wall of the housing 1. The returning mechanism 7 is used to put the waste falling from the fixing plate 66 into the crushing mechanism 6 again for crushing treatment.

[0056] Two servo motors two 4 are installed on one side wall of the housing 1. The output end of the servo motor two 4 passes through the side wall of the housing 1 and is fixedly connected to the outer crushing roller 61. The other ends of the two outer crushing rollers 61 are drivingly connected with a gear set one 62. A belt mechanism one 3 is drivingly connected between the tension wheel 72 and the gear set one 62. One servo motor one 2 is installed on the other side wall of the housing 1. The output end of the servo motor one 2 passes through the side wall of the housing 1 and is fixedly connected to the middle crushing roller 61. The other sides of the two middle crushing rollers 61 are fixedly connected with a gear set two 63. The two middle crushing rollers 61 rotate towards each other through the gear set two 63.

[0057] This equipment can crush waste materials into coarse crushed materials of 50-100mm, crushed into fine crushed materials of 1-5mm by jaw crusher, and ultra-finely crushed to below 100μm by air flow mill to increase the specific surface area and enhance the microwave desulfurization effect. The desulfurized plastic powder or rubber powder is mixed with new materials in proportion and made into recycled particles by extrusion granulator for the production of new soles or other rubber and plastic products. During the coarse crushing process, the coarse crushed materials that are not fully crushed are recycled and crushed multiple times to meet the particle size requirements of the jaw crusher for feeding. At the same time, the waste materials of different materials are separated by sorting, and different waste materials are treated by different recycling processes to improve the purity of the recycled waste materials.

[0058] In this embodiment, when the waste falls to the crushing mechanism 6, the two middle crushing rollers 61 rotate inwardly toward each other, and the waste is twisted into the gap between the two crushing rollers 61. The staggered blades are used to fully crush the waste. The servo motor 12 drives one of the crushing rollers 61 to rotate, and the two middle crushing rollers 61 rotate toward each other through the gear set 2 63, and twist the waste into the internal crushing process. The two outer crushing rollers 61 are driven separately by the servo motor 2 4. The servo motor 2 4 drives the crushing rollers 61 to twist the waste that is not twisted into the middle, thereby increasing the crushing range. At the same time, the servo motor 2 4 drives the tensioning wheel 72 to rotate through the belt mechanism 1 3, so that the tensioning belt 7 1 continuously rotates to push the return plate 73 to transport materials. The blade of the crushing roller 61 cooperates with the sieve holes of the curved screen 65 to cut the waste into a particle size that can pass through the curved screen 65, and crushes the waste in the gap. The crushed waste falls on the upper surface of the conical screen 67. If the waste particles are sufficiently cut, their particle size is small and can pass through the sieve holes of the conical screen 67. The two dividing plates 14 are used to divide the cavity at the bottom end of the shell 1 into three chambers. Materials of different materials fall into the three chambers at the bottom end of the shell 1 respectively. If the waste particles are not sufficiently cut, their particle size is too large to pass through the sieve holes of the conical screen 67. They roll down along the conical screen 67 until they fall on the return plates 73 on both sides.

[0059] The return material plate 73 is connected to the side plate 75 through a torsion spring 77. Without external force applied, the return material plate 73 is turned upwards by the torsion force of the torsion spring 77, and a V-shaped storage space is formed between the return material plate 73 and the tension belt 71. The inadequately cut waste materials falling from both sides of the conical sieve 67 are stored in the V-shaped storage space. The tension belt 71 drives the inner return material plate 73 upwards and drives the stored waste materials to move up and down until they move to the limit seat 8 near the feeding port. The outer end of the return material plate 73 is pressed by the fixed limit seat 8, and the limit seat 8 causes the return material plate 73 to rotate around the conical groove seat 74 until the return material plate 73 turns downwards. The waste materials originally stored in the V-shaped storage space fall again and fall into the gap between the crushing roller 61 and the arc sieve 65 for the second time, and the waste materials are fully cut by increasing the number of times until all the waste materials are cut into smaller particles so as to put the waste materials of smaller particles into an air flow mill for fine crushing treatment.

[0060] Refer to the Figure 16 description. In the figure, the upper left shows the state where the return material plate 73 just contacts the limit seat 8. At this time, the tension belt 71 drives the conical groove seat 74 to move upwards, and the limit seat 8 will press the return material plate 73 downwards to rotate until the inner end of the return material plate 73 is turned upwards, and the return material plate 73 turns downwards and its limit with the limit seat 8 is disengaged, as shown in the lower left of the figure; then the return material plate 73 is driven to turn by the torsion force of the torsion spring 77, the outer end of the return material plate 73 turns upwards and resets, the return material plate 73 located below originally moves upwards and gradually approaches the position of the limit seat 8, as shown in the lower right and upper right of the figure; finally, the return material plate 73 close to the limit seat 8 is forced to turn downwards again, pouring out the waste materials in the lower return material plate 73, forming a refined crushing treatment of waste material circulation.

[0061] Due to the limiting effect of the conical groove on the inner end of the return material plate 73, the angle of the upward turning of the return material plate 73 is small, so that the outer end of the return material plate 73 can contact the limit seat 8. And due to the limiting effect of the backing plate 78 above the conical groove, the angle of the downward turning of the return material plate 73 is large, so that the outer end of the return material plate 73 can be separated from the limit seat 8.

[0062] Example 2: According to Figure 3 、 Figure 4 and Figure 8 shown, a baffle 13 is installed at the top end of the housing 1, a material distributing plate 14 is installed at the bottom end of the housing 1, air inlets 12 are opened on both sides of the housing 1, two air outlets 11 are opened at the top end of the housing 1, and axial flow fans 5 are installed inside the air outlets 11 and the air inlets 12.

[0063] In this embodiment, two baffles 13 are arranged opposite to each other at the upper feed port of the shell 1, and the two baffles 13 are used to collect the input waste inward so that the waste can be concentrated on the two middle crushing rollers 61. The internal space of the shell 1 is divided into three parts by the two return mechanisms 7. An air outlet 11 and an air inlet 12 are provided on both sides of the shell 1, and an axial flow fan 5 is installed in the air inlet 12 in a forward direction to form an air duct from the outside to the inside, and an axial flow fan 5 is installed in the air outlet 11 in a reverse direction to form an air duct from the inside to the outside. Figure 5 , Attachment Figure 10 and attached Figure 15 As shown in the figure, the hollow arrows in the figure all represent the direction of air flow. The air flow passes through the surface of the tensioning belt 71, blowing away the fine waste stuck on the surface of the tensioning belt 71, keeping the surface of the tensioning belt 71 clean and tidy.

[0064] Since the exhaust capacity of the axial flow fan 5 in the air outlet 11 is limited, the excess air is discharged from the tensioning wheel 72 and the baffle 13 above, and the baffle 13 is used to guide the air so that the air is blown to the upper surface of the top return plate 73. The return plate 73 contacts the limit seat 8 and folds downward. The stored waste is poured downward along the slope. The downward airflow is used to further blow away the waste that has fallen onto the return plate 73, so that the waste on the return plate 73 is completely unloaded, ensuring that all waste that is not fully crushed is recycled and reused.

[0065] The axial flow fan 5 in the air inlet 12 absorbs air, and a pressure difference is formed between the space on both sides of the dividing plate 14 and the space above, so that a negative pressure effect is formed on both sides of the dividing plate 14. When the air flow in the air duct is greater than the air flow in the air inlet 12, the negative pressure effect is more obvious, so that there is an air flow blown out to both sides from the bottom end of the shell 1. The air flow generated by the negative pressure is used for sorting, and waste materials with different densities after coarse crushing are screened out, so that waste materials of different materials can be classified and recycled.

[0066] Example 3: According to Figure 8 、 Figure 9 and Figure 11 As shown, a swing assembly 64 is provided on either side of the conical screen 67. The swing assembly 64 includes a turntable 643, with a deflection column 644 fixedly connected to the side of the turntable 643. A bar frame 642 is slidably connected to the outer wall of the deflection column 644. A top column 641 is fixedly connected to each side of the bar frame 642. A connecting plate 646 is fixedly connected to one end of the top column 641, which is fixedly connected to the side wall of the conical screen 67. A connecting seat 645 is slidably connected to the outer wall of the top column 641, which is fixedly connected to the inner wall of the housing 1. A belt mechanism 68 is connected between one set of crushing rollers 61 and the turntable 643. The aperture of the conical screen 67 is smaller than that of the curved screen 65. The middle portion of the conical screen 67 is raised upward to form a conical structure, while the upper surface of the curved screen 65 is concave inward to form a circular arc corresponding to the crushing rollers 61.

[0067] In this embodiment, with reference to the attached Figure 9 description, after the waste is crushed, some of the waste that is not fully crushed remains on the upper surface of the conical sieve 67, and the remaining waste passes through the sieve holes of the conical sieve 67 and is collected at the bottom of the housing 1. The crushing roller 61 rotates to cut the waste. The crushing roller 61 drives the turntable 643 to rotate through the second belt mechanism 68. The turntable 643 cooperates with the deflection column 644 and the strip-shaped frame 642 to convert the rotational effect into a reciprocating motion effect, thereby driving the two ejector posts 641 to move linearly back and forth left and right, thereby pushing the conical sieve 67 to perform a reciprocating motion, shaking off the waste remaining on the conical sieve 67, avoiding blockage during the feeding process of the conical sieve 67, and enabling the device to operate continuously and stably.

[0068] The usage method and working principle of this device: First, the waste is put into the housing 1, and the waste is cut into 50 - 100 mm coarse crushed materials by the cooperation of the oppositely rotating crushing rollers 61 and the arc sieve 65. The particles with qualified particle size pass through the arc sieve 65 and fall into the conical sieve 67.

[0069] Secondly, the waste that is not fully crushed rolls down along the conical sieve 67 to the return plate 73. The tension belt 71 drives the return plate 73 to the limit seat 8, and the return plate 73 is pressed by the limit seat 8 to flip and unload the material, and the waste enters the crushing mechanism 6 for secondary crushing.

[0070] At the same time, the crushing roller 61 drives the turntable 643 to rotate through the second belt mechanism 68, which is converted into a reciprocating motion of the conical sieve 67 through the deflection column 644 and the strip-shaped frame 642, driving the fully crushed waste to pass through the sieve holes of the conical sieve 67, and making the waste after coarse crushing fall into the bottom of the housing 1 for collection.

[0071] Finally, the axial flow fans 5 at the two side air inlets 12 and the top air outlet 11 of the housing 1 form an air flow, blowing away the fine materials on the surface of the tension belt 71 and separating the waste with different densities through negative pressure to the three compartments separated by the distribution plate 14.

[0072] At the same time, when too much air flow accumulates at the air outlet 11, the excess air flow is guided by the baffle 13, so that the air blows to the upper surface of the return plate 73 at the top. At this time, the return plate 73 is flipping and unloading the material, and the downward blowing air flow is used to further blow open the waste falling on the return plate 73, so that the waste on the return plate 73 is completely unloaded, ensuring that all the waste that is not fully crushed is recycled and reprocessed.

[0073] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sole waste recycling device for footwear manufacturing, comprising a housing (1) and a crushing mechanism (6). The crushing mechanism (6) includes a crushing roller (61) and an arc-shaped sieve (65). The crushing roller (61) is rotatably connected to the inner side wall of the housing (1), and the arc-shaped sieve (65) is fixedly connected to the inner side wall of the housing (1), characterized in that: Below the bottom end of the arc sieve (65), a conical sieve (67) is provided. The middle part of the conical sieve (67) bulges upward. Fixed plates (66) are provided on both sides of the conical sieve (67). The fixed plates (66) are installed on the inner side wall of the housing (1). The conical sieve (67) is used to filter the fully crushed waste and recycle the remaining waste. Feeding-back mechanisms (7) are provided on both sides of the crushing mechanism (6). Each feeding-back mechanism (7) includes two tension wheels (72) arranged vertically. Both tension wheels (72) are rotatably connected to the inner side wall of the housing (1). A tension belt (71) is drivingly connected between the two tension wheels (72). A conical groove seat (74) is fixedly connected to the outer surface of the tension belt (71). A conical groove is formed inside the conical groove seat (74). A backing plate (78) is installed in the groove of the conical groove seat (74). A rotating shaft (76) is rotatably connected to the middle of the conical groove seat (74). A feeding-back plate (73) is fixedly connected to the surface of the rotating shaft (76). Side plates (75) are fixedly connected to both ends of the conical groove seat (74). A torsion spring (77) is provided between the conical groove seat (74) and the side plates (75). Both ends of the rotating shaft (76) are rotatably connected to the side plates (75). One end of the torsion spring (77) is fixedly connected to the side wall of the feeding-back plate (73), and the other end of the torsion spring (77) is fixedly connected to the side plates (75). Two limit seats (8) are provided above the crushing mechanism (6). The limit seats (8) are installed on the inner side wall of the housing (1). The feeding-back mechanism (7) is used to re-feed the waste that has fallen from the fixed plate (66) into the crushing mechanism (6) for crushing treatment.

2. The sole waste recycling device for footwear manufacturing according to claim 1, characterized in that: A baffle (13) is installed at the top end of the housing (1), a material distribution plate (14) is installed at the bottom end of the housing (1), air inlets (12) are formed on both sides of the housing (1), two air outlets (11) are formed at the top end of the housing (1), and axial flow fans (5) are installed inside the air outlets (11) and the air inlets (12).

3. The sole waste recycling device for footwear manufacturing according to claim 1, wherein: Two servo motors II (4) are installed on one side wall of the housing (1). The output ends of the servo motors II (4) pass through the side wall of the housing (1) and are fixedly connected to the outer crushing rollers (61). A first gear set (62) is drivingly connected to the other ends of the two outer crushing rollers (61). A first belt mechanism (3) is drivingly connected between the tension wheel (72) and the first gear set (62).

4. A sole waste recycling device for footwear manufacturing according to claim 1, characterized in that: A servo motor I (2) is installed on the other side wall of the housing (1). The output end of the servo motor I (2) passes through the side wall of the housing (1) and is fixedly connected to the middle crushing roller (61). A second gear set (63) is fixedly connected to the other sides of the two middle crushing rollers (61). The two middle crushing rollers (61) rotate towards each other through the second gear set (63).

5. A sole waste recycling device for footwear manufacturing according to claim 1, characterized in that: A swing assembly (64) is provided on both sides of the conical screen (67). The swing assembly (64) includes a turntable (643). A deflection column (644) is fixedly connected to the side of the turntable (643). The outer side wall of the deflection column (644) is slidably connected to a strip frame (642). Both sides of the strip frame (642) are fixedly connected to a top column (641). The other end of the top column (641) is fixedly connected to a connecting plate (646). The connecting plate (646) is fixedly connected to the side wall of the conical screen (67).

6. The sole waste recycling device for footwear manufacturing according to claim 1, characterized in that: The outer side wall of the top column (641) is slidably connected to a connecting seat (645), and the connecting seat (645) is fixedly connected to the inner side wall of the shell (1).

7. A sole waste recycling device for footwear manufacturing according to claim 1, characterized in that: A second belt mechanism (68) is connected between one group of crushing rollers (61) and the rotating disk (643).

8. A sole waste recycling device for footwear manufacturing according to claim 1, characterized in that: The aperture of the conical screen (67) is smaller than that of the curved screen (65), and the upper surface of the curved screen (65) is concave inward to form an arc surface corresponding to the pulverizing roller (61).

9. A sole waste recycling device for shoe manufacturing according to claim 1, characterized in that, The recycling method for waste soles includes the following steps: S1, waste material input: collecting waste materials produced in the sole production line and inputting them into the housing (1) for crushing; S2, coarse crushing: the waste is crushed into coarse crushing of 50-100mm by the cooperation of four crushing rollers (61) and curved screen (65); S3, fine crushing: put the waste of coarse crushing into the jaw crusher to crush the waste into 1-5mm fine crushing; S4, air flow grinding: put the fine material raw materials into the air flow mill, and grind the fine material into grinding powder; S5. Microwave desulfurization: The ground material is put into the microwave desulfurization reactor, and the sulfur bonds are destroyed by microwave heating to achieve material regeneration; S6, granulation regeneration: the desulfurized plastic is processed into granular raw materials through melting; The shoe sole waste recycling device for shoe manufacturing is applied to step S2 of the shoe sole waste recycling method.

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