EVA (Ethylene Vinyl Acetate) shoe material internal mixing device with uniform internal mixing

By incorporating a buffer structure consisting of a slide bar, spring, and connecting seat in the EVA shoe material mixing device, and by changing the position of the motor-driven mixing blade, the problems of the fixed position of the mixing blade affecting the mixing degree and device vibration were solved, resulting in more efficient material mixing and extended device life.

CN222345999UActive Publication Date: 2025-01-14RUIAN ANXIN SHOES CO LTD
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Patent Information

Application Number
CN202420683291.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-03
Publication Date
2025-01-14
Estimated Expiration
2034-04-03

AI Technical Summary

Technical Problem

Existing EVA shoe material mixing equipment has a problem with the mixing blade position not being easy to change during operation, which affects the degree of material mixing. In addition, the equipment vibrates a lot, which can easily damage precision components.

Method used

By setting up a sliding rod, a first spring, a sliding sleeve, a connecting rod, and a connecting seat, the position of the stirring blade can be continuously changed. The sliding sleeve on the sliding rod compresses the first spring, achieving a buffering effect and reducing vibration. At the same time, the second and third motors drive the threaded column and threaded tube, causing the stirring blade to move up and down to change its position, thereby improving the mixing effect.

Benefits of technology

It effectively reduces equipment vibration, minimizes damage to precision components, and improves the uniformity of material mixing and the service life of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an EVA (Ethylene Vinyl Acetate) shoe material internal mixing device with uniform internal mixing, which belongs to the technical field of polymer production equipment and comprises a base, a rack and an internal mixing cylinder, the rack is arranged at the upper end of the base, and the internal mixing cylinder is fixedly connected to the upper surface of the rack. By arranging a sliding rod, a first spring, a sliding sleeve, a connecting rod, a first connecting seat and a second connecting seat, when the EVA shoe material banburying device with the uniform banburying function works, under the cooperation of the sliding rod, the first spring, the sliding sleeve, the connecting rod, the first connecting seat and the second connecting seat, the second connecting seat is extruded by the lower surface of the rack, and under the transmission of the connecting rod, the EVA shoe material banburying device with the uniform banburying function is driven to rotate. The sliding sleeve slides along the sliding rod to extrude the first spring, so that balance is kept by continuously changing the transverse distance of the sliding sleeve, a good buffering effect is achieved, vibration can be effectively relieved, damage to precise components is reduced, and the service life of the device is prolonged.
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Description

Technical Field

[0001] The utility model relates to the technical field of polymer production equipment, and more specifically, to a mixing device for uniformly mixing EVA shoe materials. Background Art

[0002] EVA soles refer to soles made of EVA materials. EVA soles have high resilience and tensile strength, high toughness, good shockproof and cushioning properties, excellent heat preservation and cold-proof and low-temperature properties, can withstand severe cold, closed cells, good sound insulation, closed cell structure, non-absorbent, moisture-proof, good water-resistant properties, corrosion resistance to seawater, grease, acid, alkali and other chemicals, antibacterial, non-toxic, odorless, and pollution-free. However, when the existing EVA shoe material mixing device with uniform mixing is working, the stirring device is not convenient for changing the position of the stirring blade, thereby affecting the mixing degree of the high-melting EVA material, and the device shakes greatly under the action of the impact device, which is easy to cause certain damage to the precision components inside. To solve the above problems, we have launched the following device. Utility Model Content

[0003] Technical issues to be solved

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a uniform EVA shoe material mixing device, which has the characteristics of constantly changing the position of the stirring blades during the mixing process to improve the mixing degree of the molten EVA material, and reducing equipment vibration, reducing damage to precision components and increasing service life.

[0005] Technical Solution

[0006] To achieve the above-mentioned purpose, the utility model provides a uniform EVA shoe material mixing device, comprising a base, a frame and a mixing cylinder, the frame is arranged at the upper end of the base, the mixing cylinder is fixedly connected to the upper surface of the frame, a placement groove is opened inside the base, a sliding rod is fixedly connected inside the placement groove, a first spring is sleeved on the surface of the sliding rod, the right end of the first spring is fixedly connected to the inside of the placement groove, a sliding sleeve is movably connected on the surface of the sliding rod, the sliding sleeve is fixedly connected to the left end of the first spring, the upper surface of the sliding sleeve is fixedly connected to the first connecting seat, a connecting rod is movably connected inside the first connecting seat, the lower surface of the frame is fixedly connected to the second connecting seat, the other end of the connecting rod is movably connected inside the second connecting seat, the upper surface of the frame is fixedly connected to a motor table, a detachable cylinder cover is opened on the top of the mixing cylinder, mixing chambers are opened on both sides of the mixing cylinder, there are two mixing chambers in total, the two mixing chambers are connected, and a mixing mechanism is arranged inside the two mixing chambers.

[0007] When using a uniformly kneading device for EVA shoe materials according to the technical solution, a sliding rod, a first spring, a sliding sleeve, a connecting rod, a first connecting seat and a second connecting seat are set. When the uniformly kneading device for EVA shoe materials is working, the cooperation of the sliding rod, the first spring, the sliding sleeve, the connecting rod, the first connecting seat and the second connecting seat makes the lower surface of the frame squeeze the second connecting seat, and under the transmission of the connecting rod, the sliding sleeve slides along the sliding rod to squeeze the first spring, so that the balance is maintained by constantly changing the lateral distance of the sliding sleeve, thereby playing a good buffering role, effectively reducing vibration, reducing damage to precision components, and thus increasing the service life of the device.

[0008] Further, the mixing mechanism includes a first motor, the first motor is fixedly connected to the upper surface of the motor table, the other end of the first motor output shaft is fixedly connected to the first transmission shaft, the side of the first transmission shaft is fixedly connected to the first rotating shaft, the side of the mixing cylinder is penetrated by a first bearing, the first rotating shaft is penetrated inside the first bearing, the other end of the first rotating shaft is fixedly connected to the first rotor, the other end of the first rotor is fixedly connected to the second rotating shaft, the inside of the mixing cylinder is fixedly connected to the second bearing, and the other end of the second rotating shaft is penetrated inside the second bearing.

[0009] Furthermore, a third bearing is passed through the side of the mixing cylinder, a third rotating shaft is passed through the inside of the third bearing, one end of the third rotating shaft is fixedly connected to the second transmission shaft, the other end of the third rotating shaft is fixedly connected to the second rotor, the other end of the second rotor is fixedly connected to the fourth rotating shaft, the inside of the mixing cylinder is fixedly connected to the fourth bearing, the other end of the fourth rotating shaft is passed through the inside of the fourth bearing, and a belt is rotatably connected to the surfaces of the first transmission shaft and the second transmission shaft.

[0010] Furthermore, a cylinder is hinged between the cylinder cover and the frame, and the other end of the cylinder is fixedly connected to the side of the frame, a temperature-controlled electric heating sleeve is fixedly connected to the side of the mixing cylinder, a support frame is fixedly connected to the upper surface of the mixing cylinder, a first shell is fixedly connected to the lower surface of the support frame, a second motor is fixedly connected to the inside of the first shell, the lower end of the output shaft of the second motor is fixedly connected to the second shell, a third motor is fixedly connected to the inside of the second shell, a threaded column is fixedly connected to the lower end of the output shaft of the third motor, a threaded tube is threadedly connected to the lower end of the threaded column, a limiting block is fixedly connected to the side of the threaded tube, a limiting groove is provided inside the second shell, and the limiting block is movably connected inside the limiting groove, a fifth bearing is penetrated on the upper surface of the cylinder cover, the threaded tube is penetrated inside the fifth bearing, the threaded tube extends to the connecting position of the two mixing chambers, and a stirring blade is fixedly connected to the lower end of the threaded tube.

[0011] Furthermore, a movable cavity is provided at the bottom of the connection position of the two mixing chambers, and an impact block is movably connected inside the movable cavity. The impact block passes through the mixing cylinder, and a connecting block is fixedly connected to the bottom of the impact block. The connecting block cooperates with the movable cavity, and a second spring is sleeved on the surface of the impact block. A vibrator is fixedly connected to the lower end of the connecting block.

[0012] Beneficial Effects

[0013] In summary, the utility model has the following beneficial effects:

[0014] 1. A uniform EVA shoe material kneading device is provided with a sliding rod, a first spring, a sliding sleeve, a connecting rod, a first connecting seat and a second connecting seat. When the uniform EVA shoe material kneading device is working, the lower surface of the frame is pressed against the second connecting seat under the cooperation of the sliding rod, the first spring, the sliding sleeve, the connecting rod, the first connecting seat and the second connecting seat. Under the transmission of the connecting rod, the sliding sleeve slides along the sliding rod to press the first spring, thereby maintaining balance by constantly changing the lateral distance of the sliding sleeve, thereby playing a good buffering role, effectively reducing vibration, reducing damage to precision components, and thus improving the service life of the device;

[0015] 2. The uniformly kneaded EVA shoe material kneading device is provided with a second motor, a third motor, a threaded column and a threaded tube. When the uniformly kneaded EVA shoe material kneading device is working, people control the operation of the second motor and the third motor through an external power supply. Under the operation of the second motor, the stirring blade is driven to rotate at a high speed. At the same time, under the operation of the third motor, the threaded column is driven to rotate. Under the cooperation of the threaded column and the threaded tube, the stirring blade is driven to move up and down. By constantly changing the position of the stirring blade, the high-melting EVA material can be mixed more fully, thereby improving the kneading effect of the EVA shoe material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model in a frontal three-dimensional cross-sectional view;

[0018] Figure 2 It is a schematic diagram of the structure of the utility model in a frontal perspective;

[0019] Figure 3It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the hybrid mechanism of the utility model;

[0021] Figure 5 for Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 6 for Figure 1 The enlarged structural diagram at B in the middle;

[0023] Figure 7 for Figure 3 Schematic diagram of the enlarged structure at point C in the middle.

[0024] The markings in the accompanying drawings are:

[0025] 1. Base; 2. Frame; 3. Mixing cylinder; 4. Placement slot; 5. Slide rod; 6. Slide sleeve; 7. First spring; 8. First connecting seat; 9. Connecting rod; 10. Second connecting seat; 11. Mixing chamber; 12. Mixing mechanism; 1201. First motor; 1202. First rotating shaft; 1203. First bearing; 1204. First rotor; 1205. Second rotating shaft; 1206. Second bearing; 1207. First transmission shaft; 1208. Belt; 1209. Second transmission shaft; 1210. Third rotating shaft; 1211 , the third bearing; 1212, the second rotor; 1213, the fourth shaft; 1214, the fourth bearing; 13, the motor table; 14, the cylinder head; 15, the cylinder; 16, the temperature-controlled electric heating sleeve; 17, the support frame; 18, the first shell; 19, the second motor; 20, the second shell; 21, the third motor; 22, the threaded column; 23, the threaded pipe; 24, the limit block; 25, the limit groove; 26, the fifth bearing; 27, the stirring blade; 28, the impact block; 29, the moving cavity; 30, the vibrator; 31, the connecting block; 32, the second spring. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0027] Example:

[0028] The following is combined with Figure 1-7 The utility model is described in further detail.

[0029] See also Figure 1-7The utility model provides a technical solution: a uniform EVA shoe material mixing device, comprising a base 1, a frame 2 and a mixing cylinder 3, the frame 2 is arranged at the upper end of the base 1, the mixing cylinder 3 is fixedly connected to the upper surface of the frame 2, a placement groove 4 is provided inside the base 1, a slide bar 5 is fixedly connected inside the placement groove 4, a first spring 7 is sleeved on the surface of the slide bar 5, the right end of the first spring 7 is fixedly connected inside the placement groove 4, a sliding sleeve 6 is movably connected on the surface of the slide bar 5, the sliding sleeve 6 is fixedly connected to the left end of the first spring 7, and the sliding sleeve 6 is fixedly connected to the left end of the first spring 7. A first connecting seat 8 is fixedly connected to the upper surface of the sleeve 6, and a connecting rod 9 is movably connected inside the first connecting seat 8. A second connecting seat 10 is fixedly connected to the lower surface of the frame 2, and the other end of the connecting rod 9 is movably connected inside the second connecting seat 10. A motor table 13 is fixedly connected to the upper surface of the frame 2. A detachable cylinder cover 14 is provided on the top of the mixing cylinder 3, and mixing chambers 11 are provided on both sides of the mixing cylinder 3. There are two mixing chambers 11 in total, and the two mixing chambers 11 are connected. A mixing mechanism 12 is provided inside the two mixing chambers 11.

[0030] By adopting the above technical scheme, a uniformly kneaded EVA shoe material kneading device is provided, by arranging a slide bar 5, a first spring 7, a sleeve 6, a connecting rod 9, a first connecting seat 8 and a second connecting seat 10. When the uniformly kneaded EVA shoe material kneading device is working, with the cooperation of the slide bar 5, the first spring 7, the sleeve 6, the connecting rod 9, the first connecting seat 8 and the second connecting seat 10, the lower surface of the frame 2 squeezes the second connecting seat 10, and under the transmission of the connecting rod 9, the sleeve 6 slides along the slide bar 5 to squeeze the first spring 7, so as to maintain balance by constantly changing the lateral distance of the sleeve 6, thereby playing a good buffering role, effectively reducing vibration, reducing damage to precision components, and thus improving the service life of the device.

[0031] Specifically, the mixing mechanism 12 includes a first motor 1201, which is fixedly connected to the upper surface of the motor table 13, the other end of the output shaft of the first motor 1201 is fixedly connected to the first transmission shaft 1207, the side of the first transmission shaft 1207 is fixedly connected to the first rotating shaft 1202, a first bearing 1203 is passed through the side of the mixing cylinder 3, the first rotating shaft 1202 is passed through the first bearing 1203, the other end of the first rotating shaft 1202 is fixedly connected to the first rotor 1204, the other end of the first rotor 1204 is fixedly connected to the second rotating shaft 1205, the inside of the mixing cylinder 3 is fixedly connected to the second bearing 1206, and the other end of the second rotating shaft 1205 is passed through the second bearing 1206.

[0032] Specifically, a third bearing 1211 is passed through the side of the mixing cylinder 3, a third rotating shaft 1210 is passed through the inside of the third bearing 1211, one end of the third rotating shaft 1210 is fixedly connected to the second transmission shaft 1209, the other end of the third rotating shaft 1210 is fixedly connected to the second rotor 1212, the other end of the second rotor 1212 is fixedly connected to the fourth rotating shaft 1213, a fourth bearing 1214 is fixedly connected to the inside of the mixing cylinder 3, the other end of the fourth rotating shaft 1213 is passed through the inside of the fourth bearing 1214, and a belt 1208 is rotatably connected to the surfaces of the first transmission shaft 1207 and the second transmission shaft 1209.

[0033] Specifically, a cylinder 15 is hinged between the cylinder cover 14 and the frame 2, and the other end of the cylinder 15 is fixedly connected to the side of the frame 2, a temperature-controlled electric heating sleeve 16 is fixedly connected to the side of the mixing cylinder 3, a support frame 17 is fixedly connected to the upper surface of the mixing cylinder 3, and a first shell 18 is fixedly connected to the lower surface of the support frame 17, a second motor 19 is fixedly connected to the inside of the first shell 18, a second shell 20 is fixedly connected to the lower end of the output shaft of the second motor 19, a third motor 21 is fixedly connected to the inside of the second shell 20, a threaded column 22 is fixedly connected to the lower end of the output shaft of the third motor 21, a threaded tube 23 is threadedly connected to the lower end of the threaded column 22, a limiting block 24 is fixedly connected to the side of the threaded tube 23, a limiting groove 25 is provided inside the second shell 20, and the limiting block 24 is movably connected inside the limiting groove 25, a fifth bearing 26 is penetrated on the upper surface of the cylinder cover 14, the threaded tube 23 is penetrated inside the fifth bearing 26, the threaded tube 23 extends to the connecting position of the two mixing chambers 11, and a stirring blade 27 is fixedly connected to the lower end of the threaded tube 23.

[0034] By adopting the above technical scheme, a uniformly kneaded EVA shoe material kneading device is provided, by setting a second motor 19, a third motor 21, a threaded column 22 and a threaded tube 23. When the uniformly kneaded EVA shoe material kneading device is working, people control the operation of the second motor 19 and the third motor 21 through an external power supply. Under the operation of the second motor 19, the stirring blade 27 is driven to rotate at a high speed. At the same time, under the operation of the third motor 21, the threaded column 22 is driven to rotate. Under the cooperation of the threaded column 22 and the threaded tube 23, the stirring blade 27 is driven to move up and down. By constantly changing the position of the stirring blade 27, the high-melting EVA material can be mixed more fully, thereby improving the kneading effect of the EVA shoe material.

[0035] Specifically, a movable chamber 29 is opened at the bottom of the connection position of the two mixing chambers 11, and an impact block 28 is movably connected inside the movable chamber 29. The impact block 28 passes through the mixing cylinder 3. A connecting block 31 is fixedly connected to the bottom of the impact block 28. The connecting block 31 cooperates with the movable chamber 29. A second spring 32 is sleeved on the surface of the impact block 28, and a vibrator 30 is fixedly connected to the lower end of the connecting block 31.

[0036] The working principle of the utility model is as follows: when in use, people first control the cylinder 15 connected to the cylinder cover 14 to contract through an external power supply. At this time, the cylinder cover 14 is lifted and the operator can add the material into the mixing chamber 11, and then control the cylinder 15 to relax so that the cylinder cover 14 is against the mixing cylinder 3 to prevent material leakage, and then start the temperature-controlled electric heating sleeve 16 and the mixing mechanism 12, so that the first rotor 1204 and the second rotor 1212 knead and mix the molten EVA mixture. While the first rotor 1204 and the second rotor 1212 are rotating, the operator controls the second motor 19, the third motor 21 and the vibrator 30 to start, so that the stirring blade 27 set at the end of the threaded tube 23 can stir the logistics at the connecting position of the two mixing chambers 11, so as to promote the mixing of the materials in the two mixing chambers 11 to improve the mixing uniformity. In addition, the third motor 21 will continuously stir the external during the mixing process. The threaded tube 23 is controlled to move up and down, thereby changing the upper and lower positions of the stirring blades 27 at the connection between the two internal mixing chambers 11, increasing the turbulence of the molten material, and then generating vibrations when the vibrator 30 is started, so that the impact generated by it will be transmitted to the molten material inside the mixing cylinder 3 through the impact block 28 connected thereto, prompting various additives in the material to disperse rapidly to improve the uniformity of mixing. At the same time, with the cooperation of the slide bar 5, the first spring 7, the sleeve 6, the connecting rod 9, the first connecting seat 8 and the second connecting seat 10, the lower surface of the frame 2 squeezes the second connecting seat 10, and under the transmission of the connecting rod 9, the sleeve 6 slides along the slide bar 5 to squeeze the first spring 7, thereby maintaining balance by constantly changing the lateral distance of the sleeve 6, thereby playing a good buffering role, effectively reducing vibration, reducing damage to precision components, and thus increasing the service life of the device.

[0037] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A device for mixing uniform EVA shoe materials, comprising a base (1), a frame (2) and a mixing cylinder (3), characterized in that: The frame (2) is arranged at the upper end of the base (1); the mixing cylinder (3) is fixedly connected to the upper surface of the frame (2); a placement groove (4) is provided inside the base (1); a slide rod (5) is fixedly connected inside the placement groove (4); a first spring (7) is sleeved on the surface of the slide rod (5); the right end of the first spring (7) is fixedly connected inside the placement groove (4); a sliding sleeve (6) is movably connected on the surface of the slide rod (5); the sliding sleeve (6) is fixedly connected to the left end of the first spring (7); a first connecting seat (8) is fixedly connected to the upper surface of the sliding sleeve (6); the first A connecting rod (9) is movably connected inside the connecting seat (8); a second connecting seat (10) is fixedly connected to the lower surface of the frame (2); the other end of the connecting rod (9) is movably connected inside the second connecting seat (10); a motor stand (13) is fixedly connected to the upper surface of the frame (2); a detachable cylinder cover (14) is provided on the top of the mixing cylinder (3); mixing chambers (11) are provided on both sides of the mixing cylinder (3); there are two mixing chambers (11) in total; the two mixing chambers (11) are connected; and a mixing mechanism (12) is provided inside the two mixing chambers (11).

2. The uniform EVA shoe material mixing device according to claim 1, characterized in that: The mixing mechanism (12) comprises a first motor (1201), the first motor (1201) is fixedly connected to the upper surface of the motor platform (13), the other end of the output shaft of the first motor (1201) is fixedly connected to a first transmission shaft (1207), the side of the first transmission shaft (1207) is fixedly connected to a first rotating shaft (1202), a first bearing (1203) is passed through the side of the mixing cylinder (3), the first rotating shaft (1202) is passed through the inside of the first bearing (1203), the other end of the first rotating shaft (1202) is fixedly connected to a first rotor (1204), the other end of the first rotor (1204) is fixedly connected to a second rotating shaft (1205), the inside of the mixing cylinder (3) is fixedly connected to a second bearing (1206), and the other end of the second rotating shaft (1205) is passed through the inside of the second bearing (1206).

3. The uniform EVA shoe material mixing device according to claim 2, characterized in that: A third bearing (1211) is passed through the side of the mixing cylinder (3), a third rotating shaft (1210) is passed through the interior of the third bearing (1211), one end of the third rotating shaft (1210) is fixedly connected to the second transmission shaft (1209), the other end of the third rotating shaft (1210) is fixedly connected to the second rotor (1212), the other end of the second rotor (1212) is fixedly connected to the fourth rotating shaft (1213), the interior of the mixing cylinder (3) is fixedly connected to the fourth bearing (1214), the other end of the fourth rotating shaft (1213) is passed through the interior of the fourth bearing (1214), and a belt (1208) is rotatably connected to the surfaces of the first transmission shaft (1207) and the second transmission shaft (1209).

4. The uniform EVA shoe material mixing device according to claim 1, characterized in that: A cylinder (15) is hingedly connected between the cylinder cover (14) and the frame (2); the other end of the cylinder (15) is fixedly connected to the side of the frame (2); a temperature-controlled electric heating sleeve (16) is fixedly connected to the side of the internal kneading cylinder (3); a support frame (17) is fixedly connected to the upper surface of the internal kneading cylinder (3); a first housing (18) is fixedly connected to the lower surface of the support frame (17); a second motor (19) is fixedly connected to the inside of the first housing (18); a second housing (20) is fixedly connected to the lower end of the output shaft of the second motor (19); a third motor (21) is fixedly connected to the inside of the second housing (20); the third motor ( 21) A threaded column (22) is fixedly connected to the lower end of the output shaft, a threaded tube (23) is threadedly connected to the lower end of the threaded column (22), a limit block (24) is fixedly connected to the side of the threaded tube (23), a limit groove (25) is provided inside the second shell (20), the limit block (24) is movably connected inside the limit groove (25), a fifth bearing (26) is penetrated through the upper surface of the cylinder cover (14), the threaded tube (23) is penetrated inside the fifth bearing (26), the threaded tube (23) extends to the connection position of the two mixing chambers (11), and a stirring blade (27) is fixedly connected to the lower end of the threaded tube (23).

5. The device for mixing uniform EVA shoe materials according to claim 1, characterized in that: A movable chamber (29) is provided at the bottom of the connection position of the two internal kneading chambers (11); an impact block (28) is movably connected inside the movable chamber (29); the impact block (28) passes through the internal kneading cylinder (3); a connecting block (31) is fixedly connected to the bottom of the impact block (28); the connecting block (31) cooperates with the movable chamber (29); a second spring (32) is sleeved on the surface of the impact block (28); and a vibrator (30) is fixedly connected to the lower end of the connecting block (31).