Sole raw material mixing equipment for shoe production

Abstract

The utility model discloses sole raw material mixing equipment for shoe production, and relates to the technical field of shoe processing, and the scheme is as follows: the sole raw material mixing equipment for shoe production comprises a material mixing barrel body, the material mixing assembly comprises a first transmission main shaft arranged in the material mixing barrel, and the first transmission main shaft is provided with a clutch guide groove; the driving sliding sleeve is arranged on the outer side of the clutch guide groove in a sleeving mode, and the driving sliding sleeve can move in a reciprocating mode in the axial direction of the clutch guide groove; the first transmission main shaft is sleeved with the driven sliding sleeve, and the driven sliding sleeve can rotate relative to the first transmission main shaft; one end of the wall scraping assembly is connected with the driving sliding sleeve, and the other end of the wall scraping assembly is connected with the driven sliding sleeve; the cleaning process of the internal structure of the mixing tank can be simplified, residual raw materials are rapidly removed, the risk of cross contamination is reduced, and the cleaning efficiency is remarkably improved.

Description

A shoe sole raw material mixing equipment for shoe production Technical Field

[0001] This utility model relates to the field of footwear processing technology, specifically to a mixing device for shoe sole raw materials used in shoe production. Background Technology

[0002] The mixing of raw materials for shoe sole production is a crucial process involving the uniform blending of base resins (such as PVC, PU, ​​EVA, etc.) with fillers, plasticizers, vulcanizing agents, stabilizers, colorants, and functional additives in specific proportions. Through physical or chemical reactions, the components are dispersed and compatible, forming a stable base material that meets the requirements for wear resistance, elasticity, and slip resistance. The mixing must adhere to compatibility principles, with precise proportions determined by the intended use of the sole (e.g., high elasticity and wear resistance for athletic shoes, and stiffness and slip resistance for leather shoes), and the selection of environmentally friendly additives.

[0003] According to the authorization announcement number (CN222681394U), a shoe sole raw material mixing device for shoe production includes a mixing tank, a heating plate, and a stirring assembly in its core structure. In actual use, liquid rubber and other main materials are first injected into the mixing tank through the first feeding cylinder (the solenoid valve and discharge pipe are closed), and the heating plate is activated to prevent solidification. Then, the temporary storage cylinder cover is opened, and auxiliary materials are quantitatively added to multiple sets of second feeding cylinders according to the mixing ratio and then closed. A conical ring drives the movable cover to rotate, causing the raw materials in each cylinder to fall into the tank synchronously, achieving uniform mixing in conjunction with stirring. The equipment features staged feeding and heating pretreatment, suitable for batch mixing of liquid base materials and multi-component additives, improving efficiency and uniformity.

[0004] The structure disclosed in this patent has defects in practical applications, specifically as follows: Due to the wide variety of raw materials used in shoe soles, the mixing tank needs frequent cleaning to avoid mixing and affecting the mixing effect. However, the agitator and worm gear are distributed in an alternating manner inside the tank, severely compressing the internal space. This makes it difficult for cleaning tools to reach deep into the tank, and residual raw materials in hard-to-reach areas cannot be completely removed. This not only increases the difficulty and time cost of manual cleaning but may also cause cross-contamination between different batches of raw materials due to residual materials, affecting the quality stability of the shoe sole products. Summary of the Invention

[0005] The purpose of this utility model is to provide a mixing device for shoe sole raw materials in shoe production. It addresses the problems in the existing technology where the mixing tank is difficult to clean due to the space occupied by the stirring components and worm gear, resulting in batch contamination caused by residual raw materials, low cleaning efficiency, and high labor costs. The device simplifies the cleaning process of the internal structure of the mixing tank, enables the rapid removal of residual raw materials, reduces the risk of cross-contamination, and significantly improves cleaning efficiency.

[0006] This utility model is achieved through the following technical solution:

[0007] A shoe sole raw material mixing device for shoe production includes: a mixing cylinder; a mixing assembly, the mixing assembly including a first transmission main shaft disposed inside the mixing cylinder, the first transmission main shaft having a clutch guide groove; an active sliding sleeve, the active sliding sleeve being fitted on the outside of the clutch guide groove, the active sliding sleeve being capable of reciprocating along the axial direction of the clutch guide groove; a driven sliding sleeve, the driven sliding sleeve being fitted on the first transmission main shaft, the driven sliding sleeve being capable of rotating relative to the first transmission main shaft; and a wall scraping assembly, one end of the wall scraping assembly being connected to the active sliding sleeve, and the other end of the wall scraping assembly being connected to the driven sliding sleeve; in the mixing state: the active sliding sleeve is located on the lower side of the clutch guide groove, and the first transmission main shaft rotates relative to the active sliding sleeve; in the cleaning state: the active sliding sleeve is located on the upper side of the clutch guide groove, the active sliding sleeve and the first transmission main shaft rotate synchronously, driving the wall scraping assembly to scrape off the residue on the inner wall of the mixing cylinder.

[0008] Furthermore, in this utility model, the above-mentioned mixing assembly also includes a first motor and a plurality of mixing blades; the first motor is installed at the top of the mixing cylinder, and the output end of the first motor is connected to the first transmission main shaft; the plurality of mixing blades are installed on the first transmission main shaft, and the plurality of mixing blades are located between the active sliding sleeve and the driven sliding sleeve.

[0009] Furthermore, in this utility model, the wall scraping assembly includes a wall scraper, an active connecting rod, and a driven connecting rod; one end of the active connecting rod is connected to an active sliding sleeve, and the other end of the active connecting rod is connected to the wall scraper; one end of the driven connecting rod is connected to a driven sliding sleeve, and the other end of the driven connecting rod is connected to the wall scraper.

[0010] Furthermore, in this utility model, at least one linkage boss is arranged at the top of the clutch guide groove; a torque transmission groove adapted to the linkage boss is correspondingly opened at the top of the active sliding sleeve; wherein, when the active sliding sleeve moves upward along the clutch guide groove, the linkage boss and the torque transmission groove form a circumferential engagement.

[0011] Furthermore, in this utility model, the above-mentioned component also includes a switching assembly, which includes a second motor, a second transmission shaft, a guide sleeve, and a lifting slider. The bottom end of the guide sleeve is installed on the inner bottom wall of the mixing cylinder, and the top end of the guide sleeve is rotatably engaged with the first transmission shaft. The circumferential wall of the guide sleeve is evenly distributed with multiple guide channels. The lifting slider is fitted inside the guide sleeve and can reciprocate along the axial direction of the guide sleeve. The circumferential wall of the lifting slider is evenly distributed with multiple push rods, which pass through the corresponding guide channels. The bottom of the lifting slider is provided with a threaded groove. The second motor is installed at the bottom end of the mixing cylinder, and the output end of the second motor is connected to the second transmission shaft, which extends into the threaded groove.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] This application utilizes a switching mechanism (a linkage design of the active sliding sleeve, the driven sliding sleeve, and the wall scraping component) to allow the equipment to automatically switch to a cleaning state after mixing. This eliminates the need for operators to manually insert tools into the narrow space of the mixing tank, completely solving the problems of difficulty in reaching deep areas and numerous cleaning dead spots caused by the interlacing of the stirring components and worm gear during traditional manual cleaning. It also avoids the risk of incomplete removal of residual raw materials. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 is a schematic diagram of a shoe sole raw material mixing device for shoe production;

[0016] Figure 2 is a schematic diagram of the interior of the mixing cylinder;

[0017] Figure 3 is an enlarged view of point A in Figure 2;

[0018] Figure 4 is a 3D view of the lifting slider.

[0019] The attached diagram shows the markings and corresponding component names:

[0020] 1-Mixing cylinder, 2-First motor, 3-Second motor, 4-Feeding pipe, 5-Discharge pipe, 6-Clutch guide groove, 7-Active sliding sleeve, 8-Torque transmission groove, 9-Linkage boss, 10-Driven sliding sleeve, 11-First transmission main shaft, 12-Mixing blade, 13-Active connecting rod, 14-Driven connecting rod, 15-Wall scraper, 16-Second transmission main shaft, 17-Lifting slider, 18-Guide sleeve, 19-Guide channel, 20-Top rod, 21-Threaded groove. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0022] Example

[0023] Please refer to Figures 1 to 4. An embodiment of this utility model provides a mixing device for shoe sole raw materials in shoe production. It includes a mixing cylinder 1, a mixing assembly, an active sliding sleeve 7, a driven sliding sleeve 10, and a scraping assembly. The mixing assembly includes a first transmission shaft 11 disposed inside the mixing cylinder 1. The first transmission shaft 11 has a clutch guide groove 6, and multiple mixing blades 12 for shearing and mixing the raw materials are mounted on the first transmission shaft 11. The active sliding sleeve 7 is fitted onto the outside of the clutch guide groove 6, forming an axial sliding and circumferential limiting fit with the clutch guide groove 6. The active sliding sleeve 7 can reciprocate axially along the clutch guide groove 6. The driven sliding sleeve 10 is fitted onto the first transmission shaft 11 and can rotate relative to the first transmission shaft 11. One end of the scraping assembly is connected to the active sliding sleeve 7, and the other end is connected to the driven sliding sleeve 10.

[0024] The mixing equipment has a mixing state and a cleaning state: In the mixing state, the active sliding sleeve 7 is located below the clutch guide groove 6, and the first transmission main shaft 11 can rotate independently. The first transmission main shaft 11 drives the mixing blade 12 to rotate at high speed. The mixing blade 12 causes the shoe sole raw materials (such as rubber, resin, filler, etc.) to form strong turbulent mixing in the mixing cylinder 1 through shearing force and guiding effect. At this time, the driven sliding sleeve 10 does not participate in the transmission to avoid friction between the wall scraping component and the mixing cylinder 1, which would affect the mixing effect. In the cleaning state, the active sliding sleeve 7 moves upward along the clutch guide groove 6 to the top position. The active sliding sleeve 7 can rotate synchronously with the first transmission main shaft 11. The active sliding sleeve 7 drives the wall scraping component to rotate at low speed. The wall scraping component adheres to the inner wall of the mixing cylinder 1 to scrape off the residual raw materials. The driven sliding sleeve 10 rotates synchronously to ensure the smooth movement of the wall scraping component.

[0025] Operators add shoe sole raw materials to mixing cylinder 1 through feed pipe 4, and after mixing, the material is discharged through discharge pipe 5. After prolonged operation, the equipment can be switched to cleaning mode, where the scraper component automatically removes residues from the inner wall of mixing cylinder 1, preventing impact on the quality of raw materials for subsequent batches. During cleaning, operators do not need to enter the confined space of mixing cylinder 1, completely avoiding the inconvenience and safety hazards of traditional manual cleaning. This not only significantly reduces cleaning time but also substantially lowers the risk of cross-contamination between different batches of raw materials. Furthermore, the fully automated cleaning process reduces manual contact with raw materials, contributing to improved safety and cleanliness in the production process.

[0026] Please refer to Figure 2. In some embodiments of this application, the mixing assembly includes a first motor 2 and a plurality of mixing blades 12. The first motor 2 is mounted on the top of the mixing cylinder 1, and its output end is connected to the first drive shaft 11. The plurality of mixing blades 12 are axially distributed along the first drive shaft 11 (located between the active sliding sleeve 7 and the driven sliding sleeve 10). One end of the first drive shaft 11 is directly connected to the first motor 2, and the other end extends through the top of the mixing cylinder 1 into the inner cavity of the mixing cylinder 1. A mechanical seal structure is used at the penetration point of the first drive shaft 11 to ensure that the material does not leak out during the mixing process.

[0027] Please refer to Figure 2. In some embodiments of this application, the wall scraping assembly includes a wall scraper 15, an active connecting rod 13, and a driven connecting rod 14. One end of the active connecting rod 13 is connected to the active sliding sleeve 7, and the other end is fixed to the upper part of the wall scraper 15; one end of the driven connecting rod 14 is connected to the driven sliding sleeve 10, and the other end is fixed to the lower part of the wall scraper 15, forming a four-bar linkage. The active connecting rod 13 and the driven connecting rod 14 are symmetrically distributed on both sides of the plurality of mixing blades 12. This spatial arrangement ensures that the mixing blades 12 do not mechanically interfere with the wall scraping assembly when rotating at high speed.

[0028] The wall scraper 15 adopts an arc-shaped design, with its outer arc surface having the same radius of curvature as the inner wall of the mixing cylinder 1. It maintains dynamic contact with the wall of the mixing cylinder 1 through an elastic support structure (such as a spring or rubber pad), effectively scraping away residual material while avoiding equipment wear caused by rigid contact. This structural design allows the scraping assembly to perform full-circumferential cleaning while rotating synchronously with the active sliding sleeve 7 in a clean state, ensuring no cleaning dead corners. Simultaneously, it creates spatial isolation with the mixing area of ​​the mixing blades 12, improving the coordination and reliability of equipment operation.

[0029] Please refer to Figure 2. In some embodiments of this application, at least one linkage boss 9 (preferably 2-4, evenly distributed circumferentially) is arranged at the top of the clutch guide groove 6, and a torque transmission groove 8 (such as a rectangular groove, trapezoidal groove, or toothed groove) adapted to the shape of the linkage boss 9 is correspondingly opened at the top of the active sliding sleeve 7. Specifically:

[0030] Mixing state: Under the action of its own weight and the weight of the scraping component, the active sliding sleeve 7 moves axially downward along the clutch guide groove 6 to a low position. At this time, the torque transmission groove 8 is completely disengaged from the linkage boss 9, and the first transmission main shaft 11 can rotate freely relative to the active sliding sleeve 7. When the mixing blade 12 rotates at high speed, the scraping component remains stationary to avoid the scraping component from rubbing against the mixing cylinder 1 and affecting the mixing efficiency.

[0031] Cleaning state: The active sliding sleeve 7 moves axially along the clutch guide groove 6 to the top position, and the linkage boss 9 is precisely embedded in the torque transmission groove 8 to form a circumferential engagement, so that the first transmission main shaft 11 is rigidly connected to the active sliding sleeve 7. At this time, the first transmission main shaft 11 drives the active sliding sleeve 7 to rotate synchronously at a low speed, and drives the wall scraper 15 to move in a circular motion against the inner wall of the mixing cylinder 1 through the active connecting rod 13 and the driven connecting rod 14, thereby achieving efficient scraping of residual materials.

[0032] Among them, the driven sleeve 10 and the active sleeve 7 are mechanically linked through the wall scraping assembly. When the active sleeve 7 moves axially along the clutch guide groove 6, the driven sleeve 10 synchronously generates lifting displacement.

[0033] Please refer to Figures 3 and 4. In some embodiments of this application, the switching assembly comprises a second motor 3, a second transmission main shaft 16, a guide sleeve 18, and a lifting slider 17. Specifically:

[0034] The bottom end of the guide sleeve 18 is fixed to the inner bottom wall of the mixing cylinder 1, and the top end can be rotatably connected to the first transmission main shaft 11 through a deep groove ball bearing, so that the first transmission main shaft 11 can rotate freely relative to the guide sleeve 18; the circumferential wall of the guide sleeve 18 is evenly distributed with multiple axial guide grooves 19 (the groove width and the diameter of the push rod 20 form a clearance fit of 0.2 to 0.5 mm) to provide lifting guidance for the push rod 20.

[0035] The lifting slider 17 is fitted inside the guide sleeve 18, and the lifting slider 17 and the guide sleeve 18 form an axial sliding fit. Multiple push rods 20 are evenly distributed on the circumferential wall of the lifting slider 17 corresponding to the guide channel 19. The push rods 20 pass through the guide channel 19 and extend to the outside of the guide sleeve 18. A threaded groove 21 is opened at the bottom of the lifting slider 17, and the threaded groove 21 forms a threaded pair fit with the second transmission main shaft 16.

[0036] Power transmission path: The second motor 3 is installed at the bottom of the mixing cylinder 1, and the output end of the second motor 3 is connected to the second transmission main shaft 16 through a coupling; when the second motor 3 drives the second transmission main shaft 16 to rotate, the lifting slider 17 moves axially along the guide sleeve 18 under the side effect of the thread, driving the top rod 20 to rise and fall synchronously.

[0037] Workstation switching logic:

[0038] Mixed state: The lifting slider 17 is located at the bottom of the guide sleeve 18, the top rod 20 is disengaged from the bottom surface of the driven sleeve 10, the active sleeve 7 is located under the clutch guide groove 6 under the action of gravity, and the first transmission main shaft 11 independently drives the mixing blade 12 to rotate.

[0039] Cleaning state: The second motor 3 rotates forward, the lifting slider 17 rises along the guide sleeve 18, the top surface of the top rod 20 abuts against the bottom surface of the driven sliding sleeve 10 and applies an upward thrust; the driven sliding sleeve 10 pushes the active sliding sleeve 7 to move upward synchronously through the four-bar linkage mechanism of the scraping assembly until the torque transmission groove 8 of the active sliding sleeve 7 is circumferentially engaged with the linkage boss 9 at the top of the clutch guide groove 6. At this time, the first transmission main shaft 11 drives the scraping assembly to rotate and clean.

[0040] It should be noted that the second drive shaft 16, which passes through the mixing cylinder 1, adopts a mechanical seal structure. Through the cooperation of the dynamic and static rings and the design of the sealing ring, it ensures that the material inside the mixing cylinder 1 does not leak out when the second drive shaft 16 rotates. At the same time, it adapts to the temperature and pressure conditions of the equipment's working environment, prevents material contamination and the intrusion of external impurities, and ensures the sealing and reliability of the equipment operation.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A mixing device for shoe sole raw materials in shoe production, characterized in that, include: Mixing cylinder (1); mixing assembly, the mixing assembly including a first transmission main shaft (11) disposed inside the mixing cylinder (1), the first transmission main shaft (11) having a clutch guide groove (6); active sliding sleeve (7), the active sliding sleeve (7) being fitted on the outside of the clutch guide groove (6), the active sliding sleeve (7) being capable of reciprocating along the axial direction of the clutch guide groove (6); driven sliding sleeve (10), the driven sliding sleeve (10) being fitted on the first transmission main shaft (11), the driven sliding sleeve (10) being capable of relative movement with respect to the first transmission main shaft. (11) Rotation; wall scraping assembly, one end of which is connected to the active sliding sleeve (7), and the other end of which is connected to the driven sliding sleeve (10); mixing state: the active sliding sleeve (7) is located on the lower side of the clutch guide groove (6), and the first transmission main shaft (11) rotates relative to the active sliding sleeve (7); cleaning state: the active sliding sleeve (7) is located on the upper side of the clutch guide groove (6), and the active sliding sleeve (7) rotates synchronously with the first transmission main shaft (11), driving the wall scraping assembly to scrape off the residue on the inner wall of the mixing cylinder (1).

2. The shoe sole raw material mixing equipment according to claim 1, characterized in that, The mixing assembly also includes a first motor (2) and a plurality of mixing blades (12); the first motor (2) is installed at the top of the mixing cylinder (1), and the output end of the first motor (2) is connected to the first transmission shaft (11); the plurality of mixing blades (12) are installed on the first transmission shaft (11), and the plurality of mixing blades (12) are located between the active sliding sleeve (7) and the driven sliding sleeve (10).

3. The shoe sole raw material mixing equipment according to claim 1, characterized in that, The wall scraping assembly includes a wall scraper (15), an active connecting rod (13), and a driven connecting rod (14); one end of the active connecting rod (13) is connected to the active sliding sleeve (7), and the other end of the active connecting rod (13) is connected to the wall scraper (15); one end of the driven connecting rod (14) is connected to the driven sliding sleeve (10), and the other end of the driven connecting rod (14) is connected to the wall scraper (15).

4. The shoe sole raw material mixing equipment for shoe production according to any one of claims 1 to 3, characterized in that, At least one linkage boss (9) is arranged at the top of the clutch guide groove (6); a torque transmission groove (8) adapted to the linkage boss (9) is opened at the top of the active sliding sleeve (7); wherein, when the active sliding sleeve (7) moves upward along the clutch guide groove (6), the linkage boss (9) and the torque transmission groove (8) form a circumferential engagement.

5. The shoe sole raw material mixing equipment according to claim 4, characterized in that, It also includes a switching assembly, which comprises a second motor (3), a second transmission main shaft (16), a guide sleeve (18), and a lifting slider (17); the bottom end of the guide sleeve (18) is installed on the inner bottom wall of the mixing cylinder (1), the top end of the guide sleeve (18) is rotatably engaged with the first transmission main shaft (11), and the circumferential wall of the guide sleeve (18) is evenly distributed with multiple guide channels (19); the lifting slider (17) is fitted inside the guide sleeve (18), and the lifting slider (17) can... The lifting slider (17) is able to reciprocate along the axial direction of the guide sleeve (18). The circumferential wall of the lifting slider (17) is provided with a plurality of push rods (20). The plurality of push rods (20) pass through the corresponding guide channels (19). The bottom of the lifting slider (17) is provided with a threaded groove (21). The second motor (3) is installed at the bottom end of the mixing cylinder (1). The output end of the second motor (3) is connected to the second transmission main shaft (16). The second transmission main shaft (16) extends into the threaded groove (21).

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