Marble grain sole manufacturing process and sole thereof

Abstract

The present application belongs to the technical field of shoe sole manufacturing, in particular to a marble pattern shoe sole manufacturing process and shoe sole thereof, comprising a shoe sole body, which is composed of a transparent rubber matrix and a plurality of colored rubber blocks dispersed in the transparent rubber matrix, and the transparent rubber matrix is made of transparent rubber and pearl powder. The marble pattern shoe sole manufacturing process and shoe sole thereof can obtain delicate micro-pearl luster under the premise of ensuring high transparency of rubber by precisely controlling the amount of pearl powder added. The transparent rubber material of different colors is crushed into irregular blocks with a size of 0.5 cm³-1.5 cm³, and is subjected to mold vulcanization at 165℃±5℃ for 5 minutes, so that the colored blocks are naturally flowed and fused to form soft and tortuous marble patterns which cannot be replicated. The hard and square boundary caused by traditional regular particles is overcome, and at the same time, the irregular concave-convex patterns of the outer edge of the shoe sole are fitted with the mold to form clear and angular side patterns.

Description

Technical Field

[0001] This invention relates to the field of shoe sole manufacturing technology, and in particular to a marble-patterned shoe sole manufacturing process and the shoe sole thereof. Background Technology

[0002] As a key component of footwear that directly contacts the ground and bears the weight of the human body, the sole's abrasion resistance, slip resistance, and cushioning performance directly affect the comfort and safety of wearers. In recent years, with consumers' increasing demands for the aesthetic appearance of footwear, soles with natural textures (such as marble, wood grain, and camouflage patterns) have gradually gained market favor. Marble patterns, due to their natural color transitions, random patterns, and artistic appeal, are widely used in high-end athletic shoes, casual shoes, and fashion footwear.

[0003] Currently, existing marble-patterned shoe sole manufacturing technologies can be mainly divided into the following categories: (1) Lamination and composite method: Two or more rubber sheets of different colors are pre-pressed together and then vulcanized. The drawback of this method is that the boundaries between the color layers are clear and hard, lacking the soft gradation and natural flow effect that natural marble should have, and the peel strength between the layers is greatly affected by the lamination process, which easily leads to delamination problems.

[0004] (2) Multi-port injection molding: Different colored rubber materials are injected simultaneously or sequentially into the mold cavity through multiple injection ports of the injection molding machine or injection molding machine. This method requires extremely high equipment precision, and different colored materials are prone to turbulent mixing during the mold filling process, forming blocky color spots with distinct boundaries, rather than the ribbon-like or cloud-like transition texture unique to marble patterns. In addition, injection molding equipment is expensive, which is not conducive to the promotion and application of small and medium-sized enterprises.

[0005] (3) Cutting and mixing method: Different colored rubber raw materials are cut into small pieces and mixed, and then vulcanized and extruded to obtain colored rubber materials with gem-like luster. However, this method only focuses on the overall addition of pearlescent powder and does not conduct in-depth research on the differences in fluidity of different colored blocks during vulcanization, the precise amount of pearlescent powder added, and irregular cutting methods. In practice, if too much pearlescent powder is added (e.g., more than 10 grams per kilogram of rubber), it will lead to a decrease in the transparency of the rubber and an increase in haze, resulting in a cloudy, milky appearance that cannot present the transparent and three-dimensional texture that gemstones should have; if the amount added is too low (e.g., less than 0.5 grams per kilogram), the pearlescent luster will be insufficient and it will be difficult to produce an optical refraction layering effect; in addition, the existing cutting and mixing process mostly uses regular particles (e.g., cubes or cylinders), resulting in the final molded texture showing a rigid grid or straight-line boundary, which is far from the natural zigzag texture of natural marble.

[0006] (4) Regarding pearlescent soles: There are reports in the existing technology of adding pearlescent powder (such as mica titanium coated pigment) to transparent rubber to obtain a shimmering effect. However, most solutions do not fully consider the balance between the particle size of the pearlescent powder, the amount added and the transparency of the rubber. They also do not coordinate the pearlescent luster with the marble pattern and the concave and convex shape of the outer edge of the sole, making it difficult to present a three-dimensional luster effect similar to the facet of a gemstone.

[0007] (5) Regarding rubber irregular cutting equipment: In the field of rubber product manufacturing, conventional rubber cutting machines or granulators (such as rotary pelletizers and template extrusion pelletizers) usually use fixed-length cutting or rotating blade scraping to produce cylindrical, cubic, or flaky granules with regular shapes. For example, common rubber pelletizers extrude rubber material into strips through an extruder, and then cut them to a fixed length by rotating blades. The resulting granules have a consistent shape and uniform size. Although this type of equipment has a high degree of automation, it cannot produce rubber blocks with irregular shapes (such as polyhedrons, arc-shaped cross sections, and non-right-angle cross sections), and therefore cannot meet the demand for irregular color blocks for marble-patterned shoe soles. If manual cutting or crushing is used, the efficiency is low, the size is uneven, and it is difficult to achieve industrial mass production. Summary of the Invention

[0008] Given the current lack of a sole manufacturing process that can simultaneously achieve natural marble patterns, a pearlescent three-dimensional texture like gemstones, and efficient industrial production, as well as a sole and its manufacturing process, and the lack of specialized cutting equipment capable of continuously cutting rubber sheets into rubber blocks of uneven volume and irregular shape, this invention proposes a marble-patterned sole manufacturing process and the sole itself.

[0009] The present invention provides a shoe sole comprising a shoe sole body, wherein the shoe sole body is composed of a transparent rubber matrix and a plurality of colored rubber blocks dispersed in the transparent rubber matrix, and the transparent rubber matrix is ​​made of a blend of transparent rubber and pearlescent powder; The colored rubber block is an irregular block formed by mixing the transparent rubber with pigments of different colors and then crushing it; the colored rubber block and the transparent rubber matrix form a bonding interface through hot melting fusion during the vulcanization process, and present a marble texture. The outer edge of the sole body is provided with irregular concave and convex patterns.

[0010] The present invention proposes a process for manufacturing marble-patterned shoe soles, comprising the following steps: Includes the following steps: Step 1: Preparation of transparent substrate: Select cis-butadiene rubber as the base polymer and prepare 1000g of transparent rubber base material; Step 2, Pearl powder pre-dispersion: Accurately weigh 2g of pearl powder, mix it evenly with a low molecular weight transparent softener to form a pre-dispersion slurry; the pearl powder used is a synthetic mica titanium-coated pearl powder with a particle size of 15-40 micrometers. Step 3, Mixing and Coloring: Using an open mixing mill, the transparent rubber base material is mixed evenly with zinc oxide, stearic acid, silica, and fillers. Then, sulfur, accelerator, the pre-dispersed slurry, and colorants of different colors are added sequentially. The mixture is passed through a thin mill 5 to 8 times to homogenize the rubber compound, thereby obtaining at least two different colored transparent rubber materials. During the mixing process, the mixing temperature and shearing speed are strictly controlled to avoid high-temperature and prolonged shearing. Step 4, Sheeting and Cooling: Sheet each of the mixed rubber compounds separately and hang them to cool for at least 2 to 4 hours; Step 5, Crushing and Granulation: The cooled rubber materials of each color are fed into the rubber cutting machine and cut into irregular blocks with a volume of 0.5cm³ to 1.5cm³. Step Six: Compression Vulcanization Molding: The irregular blocks are randomly mixed in the cavity of the shoe sole mold, and a release agent is sprayed onto the mold; the outer edge of the shoe sole mold is provided with irregular concave and convex patterns; the mold is placed in a flat vulcanizing machine and closed, and vulcanized at a temperature of 165℃±5℃ for 5 minutes, so that the rubber blocks of different colors flow and mix during the heating process to form marble patterns, while the outer edge of the shoe sole adheres to the concave and convex patterns during the vulcanization process to form corresponding irregular patterns; Step 7, Demolding and Shaping: After vulcanization, cool the mold to room temperature, remove the flash after demolding, and the main body of the shoe sole is obtained.

[0011] Preferably, the rubber cutting machine component in step five includes a frame, and the frame is internally equipped with a conveying device, a cutting device, and a cooling device. The conveying device includes a conveyor belt, which is fixedly installed on the outer surface of the frame. A drive motor is fixedly installed on the outer surface of the frame, and a rotating roller is fixedly installed on the inner wall of the frame. One end of the output shaft of the drive motor is fixedly connected to one end of the rotating roller to drive the rotating roller to rotate. Pressing protrusions distributed in a ring array are fixedly installed on the outer surface of the rotating roller.

[0012] Preferably, a support platform is fixedly installed on the inner wall of the frame, and a cutting plate is fixedly installed at one end of the support platform. A cutting groove is formed on the outer surface of the cutting plate.

[0013] Preferably, the cutting device includes a cutting hydraulic cylinder, which is fixedly installed on the outer surface of the frame. A limiting slide rod is fixedly installed on the inner wall of the frame. An upper pressure plate is fixedly installed on one end of the piston rod of the cutting hydraulic cylinder. The inner wall of the through hole of the upper pressure plate is slidably sleeved with the outer surface of the limiting slide rod.

[0014] Preferably, a dividing blade is fixedly installed on the lower surface of the upper pressure plate, and an arc-shaped transverse blade is fixedly installed on the edge of the lower surface of the upper pressure plate. Both the dividing blade and the arc-shaped transverse blade are slidably inserted into the inner wall of the cutting groove.

[0015] Preferably, the inner wall of the frame is rotatably connected to a rotating frame via bearings, and both ends of the rotating frame are connected by connecting rods via pins. One end of one connecting rod is hinged to the outer side of the upper pressure plate via a pin, and a push plate is slidably sleeved on the outer surface of the limiting slide rod. One end of the other connecting rod is hinged to the outer side of the push plate via a pin.

[0016] Preferably, a lower pressure plate is slidably sleeved on the outer surface of the limiting slide rod, a connecting spring is fixedly installed on the lower surface of the lower pressure plate, one end of the connecting spring is fixedly installed on the upper surface of the push plate, and an arc-shaped vertical blade is fixedly installed on the upper surface of the lower pressure plate.

[0017] Preferably, the cooling device includes a mounting plate, which is fixedly mounted on the outer surface of the limiting slide rod. Push piston rods are fixedly mounted on the upper and lower surfaces of both mounting plates. An air storage cylinder is fixedly mounted on the upper surface of the upper pressure plate and inside the push plate. The inner wall of the air storage cylinder is slidably sleeved with one end of the push piston rod.

[0018] Preferably, the inner walls of both the upper pressure plate and the lower pressure plate are provided with diversion cavities. The air outlet of the upper air storage cylinder is fixedly connected to the inner wall of the upper diversion cavity through a connecting pipe, and the air outlet of the lower air storage cylinder is fixedly connected to the inner wall of the lower diversion cavity through a connecting hose.

[0019] The beneficial effects of this invention are as follows: 1. By setting up a marble-patterned sole manufacturing process and precisely controlling the amount of pearlescent powder added (2g per 1kg of transparent rubber, with a particle size of 15-40 micrometers), a delicate micro-pearlescent luster is obtained while ensuring the high transparency of the rubber. Different colored transparent rubber materials are broken into irregular blocks of 0.5cm³-1.5cm³, and then molded and vulcanized at 165℃±5℃ for 5 minutes, allowing the colored blocks to flow and blend naturally, forming a soft, tortuous, and unreplicable marble pattern. This overcomes the rigid square boundaries caused by traditional regular particles. At the same time, the irregular concave and convex patterns of the mold are attached to the outer edge of the sole, forming a sharp side pattern. Combined with the internal pearlescent reflection, it presents a three-dimensional texture like a gemstone cut facet. This process has low equipment requirements, controllable costs, and is suitable for industrial mass production. It solves the technical problem that existing sole manufacturing processes lack a sole and manufacturing process that can simultaneously achieve a natural marble pattern, a gemstone-like pearlescent three-dimensional texture, and efficient industrial production.

[0020] 2. By setting up a rubber cutting machine component, the upper pressure plate is driven by a cutting hydraulic cylinder, and in conjunction with the dividing blade, the arc-shaped transverse blade and the arc-shaped vertical blade driven by the linkage mechanism, the rubber sheet is cut longitudinally and laterally in a non-linear manner, producing irregular curved rubber blocks (volume 0.5-1.5cm³), which provides a key raw material basis for forming natural marble patterns. At the same time, the reciprocating motion of the upper and lower pressure plates drives the piston rod to compress the air storage cylinder, and sends the cold air to the cutting area through the distribution chamber, effectively preventing the rubber material from sticking to the blade. This achieves the simultaneous execution of irregular cutting and cooling, greatly improving production efficiency and consistency. It solves the technical problem that the existing shoe sole manufacturing process lacks a dedicated cutting equipment that can continuously cut rubber sheets into rubber blocks with uneven volume and irregular contours. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a marble-patterned shoe sole manufacturing process and the shoe sole itself, as proposed in this invention. Figure 2 This is a perspective view of a marble-patterned shoe sole manufacturing process and its conveyor belt structure proposed in this invention. Figure 3 This is a perspective view of a marble-patterned shoe sole manufacturing process and its support platform structure proposed in this invention. Figure 4 This is a perspective view of a marble-patterned shoe sole manufacturing process and its shoe sole cutting plate structure proposed in this invention; Figure 5 This is a perspective view of a marble-patterned shoe sole manufacturing process and a hydraulic cylinder structure for cutting the shoe sole, as proposed in this invention. Figure 6 This is a perspective view of a marble-patterned shoe sole manufacturing process and its limiting slide bar structure proposed in this invention. Figure 7 This is a perspective view of a marble-patterned shoe sole manufacturing process and its upper pressure plate structure proposed in this invention. Figure 8 This is a three-dimensional view of a marble-patterned shoe sole manufacturing process and its flow distribution cavity structure proposed in this invention. Figure 9 This is a perspective view of a marble-patterned shoe sole manufacturing process and the segmentation blade structure of the shoe sole proposed in this invention; Figure 10 This is a perspective view of a marble-patterned shoe sole manufacturing process and its lower pressure plate structure proposed in this invention. Figure 11 This is a perspective view of a marble-patterned shoe sole manufacturing process and the arc-shaped vertical blade structure of the shoe sole proposed in this invention.

[0022] In the diagram: 1. Shoe sole body; 2. Frame; 3. Conveyor belt; 31. Drive motor; 32. Rotating roller; 33. Pressing protrusions; 34. Support platform; 35. Cutting plate; 36. Cutting groove; 4. Cutting hydraulic cylinder; 41. Limiting slide rod; 42. Upper pressure plate; 43. Dividing blade; 44. Arc-shaped transverse blade; 5. Rotating frame; 51. Connecting rod; 52. Push plate; 6. Lower pressure plate; 61. Connecting spring; 62. Arc-shaped vertical blade; 7. Mounting plate; 71. Push piston rod; 72. Air storage tank; 73. Diverter chamber. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0024] Example 1 Reference Figure 1 A shoe sole includes a sole body 1, which is composed of a transparent rubber matrix and a plurality of colored rubber blocks dispersed in the transparent rubber matrix.

[0025] The transparent rubber matrix is ​​made of transparent rubber and pearlescent powder; the colored rubber block is an irregular block formed by mixing transparent rubber with pigments of different colors and then crushing it. The colored rubber block and the transparent rubber matrix form a bonding interface through the hot melting fusion during the vulcanization process, and present a naturally flowing and fused marble texture inside the sole.

[0026] In addition, the outer edge of the sole body 1 is provided with irregular concave and convex patterns, which echo the marble texture inside the sole, together enhancing the three-dimensional texture and aesthetics of the sole.

[0027] Example 2 The present invention proposes a process for manufacturing marble-patterned shoe soles, comprising the following steps: Step 1: Preparation of transparent substrate: Butadiene rubber was selected as the base polymer to prepare a transparent rubber base material. In this embodiment, the amount of transparent rubber base material used was 1000 grams (i.e., 1 kg). Butadiene rubber has high transparency, high elasticity and excellent light transmission properties, which is beneficial to the subsequent presentation of pearlescent luster. In actual production, other transparent rubbers, such as ethylene propylene rubber, silicone rubber or styrene-butadiene rubber, can also be selected according to performance requirements.

[0028] Step 2: Pre-dispersion of pearlescent powder: Accurately weigh 2 grams of pearlescent powder. The pearlescent powder used is a synthetic mica-titanium coated pearlescent powder with a particle size of 15-40 micrometers. This material is non-toxic, heat-resistant, light-resistant, and non-migrating, meeting the safety standards for rubber products. To ensure that the pearlescent powder is evenly dispersed in the rubber and to avoid agglomeration, first mix the weighed pearlescent powder with a low molecular weight transparent softener (such as naphthenic oil or white oil) to form a pre-dispersed slurry with good flowability. The pre-dispersion process can be carried out in a low-speed stirrer for about 3-5 minutes until there are no obvious lumps.

[0029] Step 3: Mixing and Coloring The mixing process is carried out using an open-type rubber mixing mill. First, 1000 grams of transparent rubber base material is added to the mixing mill, followed by zinc oxide, stearic acid, silica, and conventional rubber fillers (such as calcium carbonate or diatomaceous earth) for basic mixing to ensure that the components are initially and evenly dispersed. Then, sulfur vulcanizing agent, accelerator (such as accelerator DM or accelerator CZ), the pearlescent powder pre-dispersion slurry prepared above, and colorants of different colors are added in sequence. The colorants are selected according to the desired color, using rubber-specific color powder or organic pigments, such as carbon black powder, iron brown powder, titanium dioxide, phthalocyanine blue, etc. To obtain at least two colors, the above mixed rubber material needs to be divided into at least two batches, with different colorants added to each batch.

[0030] Continue to pass through the mill 5 to 8 times to fully homogenize the rubber compound. During the mixing process, the temperature of the mill rollers and the shearing speed should be strictly controlled to avoid damaging the flaky structure of the pearlescent powder by high-temperature and long-term shearing. Generally, the roller temperature should be controlled between 50 and 70°C, and the shearing time should not be too long. The goal is to make the rubber compound uniform in color and free of pearlescent powder agglomeration spots.

[0031] Step 4: Film Output and Cooling The mixed rubber compounds of various colors are taken out from the rubber mixing mill and pressed into uniformly thick sheets by a sheet press or sheet extruder. The thickness of the sheets can be adjusted according to the subsequent cutting requirements. In this embodiment, the preferred thickness is 3 to 8 mm. The pressed sheets are suspended on a cooling rack and cooled at room temperature for at least 2 to 4 hours to allow the rubber compound to cool and set fully, reduce the internal stress of the rubber compound, and prevent the sheets from sticking together during the subsequent cutting process due to excessive temperature.

[0032] Step 5: Crushing and Granulation The cooled rubber materials of various colors are fed into the rubber cutting machine component and cut into irregular blocks with a volume of 0.5 cubic centimeters to 1.5 cubic centimeters. This rubber cutting machine component is an important supporting equipment of the present invention. Through this rubber cutting machine, the rubber material is cut into multiple fragments with irregular curved or inclined surfaces, rather than irregular cubes or cylinders. These irregular blocks vary in size and shape, providing key conditions for the subsequent vulcanization to form natural marble patterns.

[0033] Step Six: Compression Molding and Vulcanization Take a shoe sole mold that matches the desired shoe sole shape. The outer edge of the mold is pre-set with irregular concave and convex patterns. Spray a release agent (such as silicone oil release agent or polytetrafluoroethylene release agent) evenly on the inner wall of the mold cavity to prevent the adhesive from sticking. Randomly mix the above-prepared irregular blocks of at least two colors (such as dark gray and brown) according to the preset color distribution and fill them into the mold cavity. The mixing ratio can be adjusted according to the desired marble color tone, for example, dark gray blocks account for 60% and brown blocks account for 40%.

[0034] The mold filled with rubber blocks is placed in a flat vulcanizing machine. After the mold is closed, the set pressure is applied, the heating temperature is set to 165℃±5℃, and the vulcanization time is 5 minutes. Under these temperature and pressure conditions, the rubber blocks of different colors soften and become more fluid. Physical natural flow and interpenetration occur between the color blocks. Since each color block is based on the same transparent butadiene rubber substrate, their co-vulcanization performance is good, and they can be firmly fused at the interface. As the flow proceeds, the boundaries of the originally independent color blocks gradually become blurred, and they interpenetrate to form filamentous, cloud-like, or branch-like textures similar to natural marble. At the same time, under the action of pressure, the irregular concave and convex patterns on the outer edge of the mold will imprint the corresponding shapes on the side of the sole, so that the outer edge of the sole forms irregular patterns with distinct edges and a staggered pattern.

[0035] Step 7: Demolding and Shaping After the vulcanization time is reached, turn on the flat vulcanizing machine, remove the mold and cool it to room temperature. After the sole has completely cooled and set, open the mold and remove the formed sole body 1. Use a trimming knife or grinding wheel to remove a small amount of burrs from the edge of the sole to obtain a complete marble-patterned sole. The interior of the sole features a natural and unique marble pattern, while the outer edge is complemented by a pearlescent reflection effect, showcasing a three-dimensional texture similar to a gemstone facet.

[0036] In the above embodiments, the process parameters can be adjusted within a certain range to still achieve good results. Specifically, the transparent rubber base material is not limited to butadiene rubber, but other highly transparent rubbers can also be used. The amount of pearl powder added can fluctuate between 1 gram and 3 grams per kilogram of rubber, but 2 grams is optimal. The cooling and hanging time can be 2 hours, 3 hours, or 4 hours, and can be adjusted appropriately according to the ambient temperature and humidity. The vulcanization temperature can be selected between 160℃ and 170℃, and the vulcanization time can be adjusted between 4 minutes and 6 minutes, as long as the rubber is fully vulcanized and the color blocks flow and merge to form a clear texture.

[0037] Specific examples of yellow-brown marble-patterned soles: Select 1000g of butadiene rubber, and mix it with 5g of zinc oxide, 2g of stearic acid, 30g of silica, and 20g of calcium carbonate on an open mixing mill until homogeneous. Premix 2g of mica titanium pearl powder with a particle size of 20-30 micrometers with 5g of naphthenic oil to form a slurry, and add it to the rubber compound. Then add 2g of sulfur and 1.5g of accelerator DM. Divide the rubber compound into two parts: one part contains 0.3g of iron oxide yellow powder and 0.1g of titanium dioxide to form a light yellow compound; the other part contains 1.2g of iron oxide brown powder to form a dark brown compound. Pass each compound through a thin sheet 6 times, producing a sheet with a thickness of 5mm, and then cool and hang for 3 hours. The two cooled rubber sheets are fed into the rubber cutting machine component of claim 3 to cut irregular rubber blocks with a volume of approximately 0.8 to 1.2 cubic centimeters. These blocks are randomly mixed in a 50% light yellow and 50% dark brown ratio and placed into a shoe sole mold with an irregular embossed pattern on the outer edge. After spraying the mold with a release agent, it is vulcanized at 165°C for 5 minutes on a flat vulcanizing machine under a pressure of 15 MPa. After cooling and trimming, the yellow-brown marble-patterned shoe sole body 1 is obtained.

[0038] Under natural light, the sole body 1 displays a natural flow pattern of yellow and brown, with light yellow and dark brown interspersed and transitioning smoothly, subtly revealing a pearlescent luster. The sides have irregular rock-like fractures and bumps, giving the overall look a translucent and gem-like three-dimensional feel. Tests show that the sole body 1 has a Sauer A hardness of 60 degrees and a DIN abrasion wear of 110mm³, meeting the requirements for daily wear.

[0039] Example 3 Reference Figures 2-11 As shown, in order to continuously cut the film into irregular blocks with a volume of 0.5 to 1.5 cubic centimeters, this invention has specially designed a film cutting machine component, which will be described in detail below in conjunction with its composition and operation process.

[0040] like Figure 2 As shown, the rubber cutting machine component includes a frame 2, which serves as the supporting foundation for the entire equipment. Inside the frame 2, there are conveying devices, cutting devices, and cooling devices.

[0041] The conveying device includes a conveyor belt 3, a drive motor 31, and a rotating roller 32. The conveyor belt 3 is fixedly installed on the outer surface of the frame 2 to carry and convey the film to be cut forward. The drive motor 31 is fixedly installed on the outer surface of the frame 2. The rotating roller 32 is installed on the inner wall of the frame 2 through bearings. The output shaft of the drive motor 31 is fixedly connected to one end of the rotating roller 32, thereby driving the rotating roller 32 to rotate. The outer surface of the rotating roller 32 is fixedly installed with pressing protrusions 33 arranged in a ring array. When the rotating roller 32 rotates, the pressing protrusions 33 periodically press against the film on the conveyor belt 3, which plays a role in assisting feeding and preventing the film from slipping.

[0042] like Figures 3-4As shown, a support platform 34 is fixedly installed on the inner wall of the frame 2. A cutting plate 35 is fixedly installed on one end of the support platform 34. The upper surface of the cutting plate 35 is used to place the film. A cutting groove 36 corresponding to the position of the subsequent blade is opened on the cutting plate 35.

[0043] like Figures 5-10 As shown, the cutting device includes a cutting hydraulic cylinder 4, a limiting slide bar 41, an upper pressure plate 42, a dividing blade 43, an arc-shaped transverse blade 44, a rotating frame 5, a connecting rod 51, a push plate 52, a lower pressure plate 6, a connecting spring 61, and an arc-shaped vertical blade 62.

[0044] The cutting hydraulic cylinder 4 is fixedly installed on the outer surface of the frame 2, and its piston rod extends into the interior of the frame 2. Two vertical limiting slide rods 41 are fixedly installed on the inner wall of the frame 2 to guide the moving parts; an upper pressure plate 42 is fixedly installed at the end of the piston rod of the cutting hydraulic cylinder 4. The upper pressure plate 42 has a through hole, which is slidably sleeved with the limiting slide rod 41, so that the upper pressure plate 42 can move up and down along the limiting slide rod 41.

[0045] Multiple dividing blades 43 are fixedly installed on the lower surface of the upper pressure plate 42. The dividing blades 43 are arranged along the width direction of the film, but the spacing between adjacent dividing blades 43 is not equal (for example, it is set to staggered spacing of 4mm, 6mm, 5mm, 7mm, etc.), so that the length of the cut film is different. The cutting edge of the dividing blade 43 can also be a straight line, a bevel or a V-shape, etc. At the same time, an arc-shaped transverse blade 44 is fixedly installed on the lower surface edge of the upper pressure plate 42 (i.e., the position corresponding to the transverse cutting of the film), which facilitates the overall cutting of the conveyed film. The blade edge is arc-shaped rather than straight. Both the dividing blade 43 and the arc-shaped transverse blade 44 can be inserted downward into the cutting groove 36 on the cutting plate 35 to complete the cutting of the film.

[0046] A rotating frame 5 is rotatably connected to the inner wall of the frame 2 via bearings. The rotating frame 5 can rotate freely around its central axis. Both ends of the rotating frame 5 are connected to connecting rods 51 via pins. One end of the first connecting rod 51 is hinged to the outer side of the upper pressure plate 42 via a pin. A push plate 52 is slidably sleeved on the outer surface of the limiting slide rod 41. One end of the second connecting rod 51 is hinged to the outer side of the push plate 52 via a pin. When the upper pressure plate 42 moves up and down, it drives the rotating frame 5 to rotate via the first connecting rod 51. The rotating frame 5 then drives the push plate 52 to move up and down along the limiting slide rod 41 via the second connecting rod 51. Thus, the upper pressure plate 42 and the push plate 52 move in opposite directions: when the upper pressure plate 42 moves downward, the push plate 52 moves upward; when the upper pressure plate 42 moves upward, the push plate 52 moves downward.

[0047] A lower pressure plate 6 is slidably sleeved on the outer surface of the limiting slide rod 41. The lower pressure plate 6 is located above the push plate 52. A connecting spring 61 is fixedly installed on the lower surface of the lower pressure plate 6. The lower end of the connecting spring 61 is fixedly connected to the upper surface of the push plate 52. Therefore, the up and down movement of the push plate 52 will drive the lower pressure plate 6 to move up and down through the connecting spring 61. However, due to the presence of the spring, the movement of the lower pressure plate 6 has a certain lag and buffer relative to the push plate 52. An arc-shaped vertical blade 62 is fixedly installed on the upper surface of the lower pressure plate 6. The blade edge of the blade is arc-shaped in the vertical direction.

[0048] When the cutting hydraulic cylinder 4 pushes the upper pressure plate 42 downward, the upper pressure plate 42 first drives the dividing blade 43 and the arc-shaped horizontal blade 44 downward to cut into the film, dividing the film that has already been vertically arc-shaped into strips of varying lengths with irregular or arc-shaped edges. At the same time, the downward movement of the upper pressure plate 42 drives the push plate 52 upward through the rotating frame 5 and the connecting rod 51. The push plate 52 then pushes the lower pressure plate 6 upward through the connecting spring 61. The arc-shaped vertical blade 62 on the lower pressure plate 6 moves upward through the cutting groove 36 from below, cooperating with the action of the upper pressure plate 42 to perform vertical arc-shaped cutting on the film. Since the horizontal arc-shaped blade of the upper pressure plate 42 and the vertical arc-shaped blade of the lower pressure plate 6 cut from the horizontal and vertical directions with different arc-shaped trajectories, respectively, and the dividing blades 43 are arranged at unequal intervals, the final produced film block has irregular curved or inclined surfaces on several sides, and the volume is naturally distributed in the range of 0.5 to 1.5 cubic centimeters.

[0049] like Figure 11 As shown, the cooling device includes a mounting plate 7, a push piston rod 71, an air storage cylinder 72, a flow distribution chamber 73, and a connecting pipe. The mounting plate 7 is fixedly installed on the outer surface of the limiting slide rod 41. The push piston rod 71 is fixedly installed on the upper and lower surfaces of the two mounting plates 7. The air storage cylinder 72 is fixedly installed on the upper surface of the upper pressure plate 42 and inside (or on the lower surface) of the push plate 52. The air storage cylinder 72 is hollow inside, and its inner wall is slidably sleeved with one end of the corresponding push piston rod 71 to form a structure similar to a piston-cylinder.

[0050] Both the upper pressure plate 42 and the lower pressure plate 6 have a flow divider 73. The air outlet of the upper air storage cylinder 72 (fixed to the upper pressure plate 42) is fixedly connected to the flow divider 73 inside the upper pressure plate 42 through a connecting pipe. The air outlet of the lower air storage cylinder 72 (fixed to the push plate 52) is fixedly connected to the flow divider 73 inside the lower pressure plate 6 through a connecting hose. The air outlets at both ends of the flow divider 73 on the surfaces of the upper pressure plate 42 and the lower pressure plate 6 are all facing the arc-shaped vertical blade 62, the dividing blade 43, and the arc-shaped horizontal blade 44.

[0051] When the upper pressure plate 42 and the push plate 52 move relative to or away from each other, the piston rod 71 slides back and forth relative to the air storage cylinder 72, compressing or drawing the gas in the air storage cylinder 72. Due to the high reciprocating frequency of the cutting hydraulic cylinder 4, the air pressure in the air storage cylinder 72 changes rapidly with the movement, generating a cooling airflow. This airflow enters the diversion chamber 73 of the upper pressure plate 42 and the lower pressure plate 6 through the connecting pipe or hose, and finally blows from the air outlet onto the surface of the film and blade in the cutting area, effectively removing the heat generated by the cutting friction, preventing the rubber from softening and sticking due to the temperature rise, and ensuring the cleanliness of the cut surface and the integrity of the irregular shape. This cooling device does not require an additional power source and is driven entirely by the reciprocating motion of the rubber cutter itself, which is energy-saving and reliable.

[0052] Working principle: The film to be cut is laid flat on the conveyor belt 3. The drive motor 31 is started, and its output shaft drives the rotating roller 32 to rotate. The pressing protrusions 33 distributed in a ring on the outer surface of the rotating roller 32 rotate synchronously with the rotating roller 32, periodically pressing the surface of the film and pushing the film to move. The auxiliary conveyor belt 3 smoothly and without slippage transports the film forward to the cutting station. The film finally enters the area above the support table 34 and reaches the upper surface of the cutting plate 35.

[0053] The cutting hydraulic cylinder 4 is in its initial retracted state, and the upper pressure plate 42 is raised to its highest position, leaving sufficient gap between it and the cutting plate 35 for the film to pass through. At this time, the rotating frame 5, the connecting rod 51, and the push plate 52 are all in their corresponding initial positions: when the upper pressure plate 42 is in the high position, the first connecting rod 51 pulls the rotating frame 5 to rotate to one side, and the rotating frame 5 then pushes the push plate 52 to move down along the limit slide bar 41 to the lowest position through the second connecting rod 51. The push plate 52 drives the lower pressure plate 6 to the low position through the connecting spring 61, so that the arc-shaped vertical blade 62 is completely retracted under the cutting plate 35, without interfering with the horizontal conveying of the film. When the front end of the film reaches the preset cutting position (usually controlled by a sensor or timer), the conveyor belt 3 stops.

[0054] The cutting hydraulic cylinder 4 extends, and its piston rod pushes the upper pressure plate 42 downwards rapidly along the limiting slide bar 41. The downward pressing process of the upper pressure plate 42 simultaneously triggers the following three actions: Longitudinal dividing and cutting: Multiple dividing blades 43 fixed on the lower surface of the upper pressure plate 42 descend and contact the lower pressure plate 6 through the dividing groove.

[0055] Vertical arc-shaped cutting linkage: While the upper pressure plate 42 is pressed down, the rotating frame 5 is driven to rotate through the hinged connecting rod 51. The other end of the rotating frame 5 pushes the push plate 52 upward along the limiting slide rod 41 through the second connecting rod 51. When the push plate 52 moves upward, the lower pressure plate 6 is pushed upward synchronously through the connecting spring 61. The arc-shaped vertical blade 62 fixed on the upper surface of the lower pressure plate 6 passes through the cutting groove 36 on the cutting plate 35 from bottom to top, and performs vertical arc-shaped cutting on the film. The blade of the arc-shaped vertical blade 62 is also arc-shaped (bent in the vertical plane). Due to the presence of the connecting spring 61, the rise of the lower pressure plate 6 is slightly delayed relative to the push plate 52. This ensures that the horizontal arc-shaped blade of the upper pressure plate 42 completes the horizontal cutting first, and then the arc-shaped vertical blade 62 of the lower pressure plate 6 performs the vertical cutting, avoiding blade interference.

[0056] The upper pressure plate 42 and the lower pressure plate 6 are reset after the cutting hydraulic cylinder 4 retracts, and the conveyor belt 3 continues to convey the film. The film that has been cut by the arc-shaped vertical blade 62 is located below the dividing blade 43 and is cut laterally. After the upper pressure plate 42 descends again, the multiple dividing blades 43 fixed on the lower surface of the upper pressure plate 42 first contact the film and cut downwards. Due to the staggered arrangement of the dividing blades 43, the film is divided into several strips of different lengths. At the same time, the blade of the dividing blade 43 itself can be wavy or serrated, so that the cut strip edges have natural irregular curves.

[0057] As the upper pressure plate 42 continues to press down, the curved horizontal blade 44 fixed at its edge cuts into the film. The blade is curved (not straight) and cuts an arc-shaped slit in the width direction of the film, completing the first horizontal cut. At the same time, the curved vertical blade 62 continues to cut the subsequent film vertically.

[0058] During the cutting process, the high-speed friction between the blade and the rubber material generates heat, which may cause the rubber material to soften and stick to the blade, thus destroying the integrity of the irregular shape. To address this, the rubber cutter integrates a cooling device, the principle of which is as follows: When the upper pressure plate 42 moves up and down, the upper push piston rod 71 moves back and forth relative to the air storage cylinder 72, compressing the air in the air storage cylinder 72 and generating a cooling airflow. This airflow enters the diversion chamber 73 inside the upper pressure plate 42 through the connecting pipe, and then blows from multiple air outlets on the surface of the diversion chamber 73 to the cutting area of ​​the dividing blade 43 and the arc-shaped transverse blade 44.

[0059] Similarly, when the push plate 52 moves up and down, the air storage cylinder 72 below is compressed, and the generated cold airflow enters the diversion chamber 73 inside the lower pressure plate 6 through the connecting hose, and finally blows from the air outlet on the surface of the lower pressure plate 6 to the cutting area of ​​the arc-shaped vertical blade 62.

[0060] Because the cutting hydraulic cylinder 4 has a high reciprocating frequency (e.g., 20-40 times per minute), the air storage cylinder 72 continuously pumps out cooling air, effectively reducing the temperature of the blade and the rubber material, preventing the rubber material from sticking together, and maintaining the cleanliness of the cut surface and the integrity of the irregular shape. This cooling device does not require an external air source or additional power, and is driven entirely by the mechanical energy of the cutting action itself, making it energy-saving and efficient.

[0061] After the above cycle, the film is continuously cut into a large number of irregular rubber blocks, which fall from the end of the cutting plate 35 into the collection container. These rubber blocks are of different sizes and shapes (volume between 0.5 and 1.5 cm³), and are directly used in the subsequent molding and vulcanization process of the marble pattern sole. Due to the irregularity of the rubber blocks, the different colored blocks can produce natural, random and smooth flow and interpenetration during the vulcanization process, forming a realistic marble texture, without the rigid square pattern caused by regular particles.

[0062] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A marble-patterned shoe sole, characterized in that: The shoe includes a sole body (1), which is composed of a transparent rubber matrix and a plurality of colored rubber blocks dispersed in the transparent rubber matrix. The transparent rubber matrix is ​​made of transparent rubber and pearlescent powder. The colored rubber block is an irregular block formed by mixing the transparent rubber with pigments of different colors and then crushing it; the colored rubber block and the transparent rubber matrix form a bonding interface through hot melting fusion during the vulcanization process, and present a marble texture. The outer edge of the sole body (1) is provided with irregular concave and convex patterns.

2. The manufacturing process for a marble-patterned shoe sole according to claim 1, characterized in that: Includes the following steps: Step 1: Preparation of transparent substrate: Select cis-butadiene rubber as the base polymer and prepare 1000g of transparent rubber base material; Step 2, Pearl powder pre-dispersion: Accurately weigh 2g of pearl powder, mix it evenly with a low molecular weight transparent softener to form a pre-dispersion slurry; the pearl powder used is a synthetic mica titanium-coated pearl powder with a particle size of 15-40 micrometers. Step 3, Mixing and Coloring: Using an open mixing mill, the transparent rubber base material is mixed evenly with zinc oxide, stearic acid, silica, and fillers. Then, sulfur, accelerator, the pre-dispersed slurry, and colorants of different colors are added sequentially. The mixture is passed through a thin mill 5 to 8 times to homogenize the rubber compound, thereby obtaining at least two different colored transparent rubber materials. During the mixing process, the mixing temperature and shearing speed are strictly controlled to avoid high-temperature and prolonged shearing. Step 4, Sheeting and Cooling: Sheet each of the mixed rubber compounds separately and hang them to cool for at least 2 to 4 hours; Step 5, Crushing and Granulation: The cooled rubber materials of each color are fed into the rubber cutting machine and cut into irregular blocks with a volume of 0.5cm³ to 1.5cm³. Step Six: Compression Vulcanization Molding: The irregular blocks are randomly mixed in the cavity of the shoe sole mold, and a release agent is sprayed onto the mold; the outer edge of the shoe sole mold is provided with irregular concave and convex patterns; the mold is placed in a flat vulcanizing machine and closed, and vulcanized at a temperature of 165℃±5℃ for 5 minutes, so that the rubber blocks of different colors flow and mix during the heating process to form marble patterns, while the outer edge of the shoe sole adheres to the concave and convex patterns during the vulcanization process to form corresponding irregular patterns; Step 7, Demolding and Shaping: After vulcanization, the mold is cooled to room temperature. After demolding, the flash is removed to obtain the main body of the shoe sole (1).

3. The manufacturing process for a marble-patterned shoe sole according to claim 2, characterized in that: The cutting machine component in step five includes a frame (2). The frame (2) is equipped with a conveying device, a cutting device, and a cooling device. The conveying device includes a conveyor belt (3). The conveyor belt (3) is fixedly installed on the outer surface of the frame (2). A drive motor (31) is fixedly installed on the outer surface of the frame (2). A rotating roller (32) is fixedly installed on the inner wall of the frame (2). One end of the output shaft of the drive motor (31) is fixedly installed with one end of the rotating roller (32) to drive the rotating roller (32) to rotate. Pressing protrusions (33) are fixedly installed on the outer surface of the rotating roller (32) in a ring array.

4. The marble-patterned shoe sole manufacturing process according to claim 3, characterized in that: A support platform (34) is fixedly installed on the inner wall of the frame (2), and a cutting plate (35) is fixedly installed on one end of the support platform (34). A cutting groove (36) is opened on the outer surface of the cutting plate (35).

5. The manufacturing process for a marble-patterned shoe sole according to claim 4, characterized in that: The cutting device includes a cutting hydraulic cylinder (4), which is fixedly installed on the outer surface of the frame (2). A limiting slide rod (41) is fixedly installed on the inner wall of the frame (2). An upper pressure plate (42) is fixedly installed on one end of the piston rod of the cutting hydraulic cylinder (4). The inner wall of the through hole of the upper pressure plate (42) is slidably sleeved with the outer surface of the limiting slide rod (41).

6. The manufacturing process for a marble-patterned shoe sole according to claim 5, characterized in that: A dividing blade (43) is fixedly installed on the lower surface of the upper pressure plate (42), and an arc-shaped transverse blade (44) is fixedly installed on the edge of the lower surface of the upper pressure plate (42). Both the dividing blade (43) and the arc-shaped transverse blade (44) are slidably inserted into the inner wall of the cutting groove (36).

7. The marble-patterned shoe sole manufacturing process according to claim 6, characterized in that: The inner wall of the frame (2) is rotatably connected to a rotating frame (5) via bearings. Both ends of the rotating frame (5) are connected by connecting rods (51) via pins. One end of one connecting rod (51) is hinged to the outer side of the upper pressure plate (42) via a pin. The outer surface of the limiting slide rod (41) is slidably sleeved with a push plate (52). One end of the other connecting rod (51) is hinged to the outer side of the push plate (52) via a pin.

8. The marble-patterned shoe sole manufacturing process according to claim 7, characterized in that: The outer surface of the limiting slide bar (41) is slidably sleeved with a lower pressure plate (6), and a connecting spring (61) is fixedly installed on the lower surface of the lower pressure plate (6). One end of the connecting spring (61) is fixedly installed on the upper surface of the push plate (52), and an arc-shaped vertical blade (62) is fixedly installed on the upper surface of the lower pressure plate (6).

9. The manufacturing process for a marble-patterned shoe sole according to claim 8, characterized in that: The cooling device includes a mounting plate (7), which is fixedly mounted on the outer surface of the limiting slide rod (41). Push piston rods (71) are fixedly mounted on the upper and lower surfaces of the two mounting plates (7). An air storage cylinder (72) is fixedly mounted on the upper surface of the upper pressure plate (42) and inside the push plate (52). The inner wall of the air storage cylinder (72) is slidably sleeved with one end of the push piston rod (71).

10. The manufacturing process for a marble-patterned shoe sole according to claim 9, characterized in that: Both the upper pressure plate (42) and the lower pressure plate (6) have a flow divider (73) on their inner walls. The air outlet of the upper air storage cylinder (72) is fixedly connected to the inner wall of the upper flow divider (73) through a connecting pipe. The air outlet of the lower air storage cylinder (72) is fixedly connected to the inner wall of the lower flow divider (73) through a connecting hose.

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