57results about "Leather softening" patented technology

The invention relates to a preparation method of leather with a multi-antibacterial type long-acting antibacterial function. The preparation method comprises the following steps of wet blue leather pretreatment, antibacterial retanning, filling dyeing, fat liquoring, antibacterial treatment, drying finishing and antibacterial coating. Wherein the antibacterial retanning adopts eucalyptus oil / dialdehyde cyclodextrin as an aldehyde retanning agent for aldehyde retanning; in the antibacterial treatment, eucalyptus oil and beta-cyclodextrin are used as antibacterial agents to carry out antibacterial occurrence treatment, the eucalyptus oil and the beta-cyclodextrin take essential oil extracted from natural herbaceous plant eucalyptus leaves as clathrate compounds, the beta-cyclodextrin is used as a main body, and a modified antibacterial agent beta-cyclodextrin and eucalyptus oil clathrate compound is prepared through a molecular clathration technology. As an antibacterial agent, an occurrence process is designed for antibacterial treatment; the antibacterial coating adopts a coating containing silver ions to be applied to a leather coating process; through triple antibiosis, the leather is more durable in antibiosis performance and more efficient.

The invention relates to the technical field of leather processing, in particular to a leather softening device for leather processing, which comprises a rotary drum mechanism, a first side plate mechanism and a second side plate mechanism are respectively arranged on two sides of the rotary drum mechanism, and a baffle mechanism and a filter drum mechanism which are uniformly distributed in a surrounding manner are arranged on the inner side of the rotary drum mechanism. Flexible roller mechanisms which are uniformly distributed in a surrounding manner are arranged on the periphery of the filter cartridge mechanism; by arranging the baffle mechanism capable of swinging back and forth, a baffle can be driven to swing back and forth in the rotating process of the rotary drum, so that leather is continuously collided, beaten and rubbed in the V-shaped groove, the mechanical softening effect of the leather is enhanced, the permeation uniformity of a chemical agent is also improved, and the softening efficiency and quality are improved; by arranging the flexible roller mechanism, the rubbing roller rotates while rotating along with the whole rotating drum, the multi-direction and multi-angle rubbing effect on the leather is achieved, particularly, secondary rubbing is conducted in the leather falling process, the fiber structure is further loosened, and the softening uniformity is enhanced.

The invention provides a softening method and equipment for animal leather processing, and relates to the technical field of leather softening, the equipment comprises a box body, a power assembly, a material pushing mechanism and a rolling and stretching assembly; a feeding plate is arranged at the top of the box body, a platform is integrally formed at the top end of the feeding plate, an air pump is installed on the surface of the platform, one end of the air pump is connected with external high-temperature and high-pressure steam generation equipment through a pipeline, a feeding channel is formed in the bottom of the feeding plate, and an air inlet bin is integrally formed in the bottom of the feeding channel; the rolling and stretching assembly is driven by the power assembly at the bottom to rotate, the rolling and stretching effects can be provided at the same time, the common treatment process of multiple machines is achieved, the softening efficiency and uniformity are improved, the pushing force for pushing the leather towards the bottom is periodically applied to the leather conveyed in the feeding channel in cooperation with the pushing mechanism, and the leather softening efficiency is improved. And the probability that the leather raw materials are clamped at the position of the feeding channel in the process of being conveyed into the box body is reduced.

The present application relates to the leather processing technical field, specifically to a kind of processing technology for improving leather luggage easy to crack, comprising the following steps: S1: selecting raw leather, preliminary treatment is carried out to remove surface impurities, and adjust moisture content;S2: the leather after S1 processing is soaked in natural plant oil solution;S3: the leather after soaking is treated with sound wave;S4: heat pressing treatment is carried out, and the gap between leather fibers is sealed;S5: the leather after heat pressing treatment is cooled and cured;S6: using nanoscale filler, the leather after curing is filled;S7: the leather after filling is treated with final surface coating, and protective layer is formed.The present application, by comprehensive treatment method, significantly improves the flexibility, waterproofness, pressure resistance and crack resistance of leather, while using environmentally friendly materials to optimize cost, effectively prolongs the service life of leather products and reduces environmental impact.

The invention relates to the technical field of oscillation staking machines, and discloses an oscillation staking machine capable of preventing leather from being folded, which comprises a base, a connecting bracket is fixedly connected to the upper surface of the base, an oscillation staking mechanism is mounted on the upper surface of the connecting bracket, and driving mechanisms are symmetrically mounted on two side surfaces of the connecting bracket; a first transmission auxiliary mechanism and a second transmission auxiliary mechanism are symmetrically installed on the two side faces of the oscillation staking mechanism. The driving mechanism comprises two opposite side plates, the side plates are fixedly connected to the outer surfaces of the two ends of the same side of the connecting support, a first rotating rod and a second rotating rod are rotationally connected between the side faces, close to each other, of the two side plates through bearings, a material guiding roller is fixedly connected to the outer surface of the first rotating rod, and a driving roller is fixedly connected to the outer surface of the second rotating rod; through cooperation of the structures, leather folding caused by power loss in the transmission process is avoided as much as possible, and the processing efficiency during leather staking is improved.

The utility model discloses a kind of leather moisture regaining machines, including moisture regaining machine main body, the total gas supply pipeline of one side of moisture regaining machine main body extends, the moisture regaining operation rack is provided at the one side of moisture regaining machine main body, the total gas supply pipeline of moisture regaining machine shell is provided with shunt gas supply seat, the shunt gas supply seat is installed on moisture regaining machine rack;The utility model relates to the field of leather processing technology, the leather moisture regaining machine, linear conveying device is used to make leather one-way through the air outlet of moisture regaining machine main body, shunt gas supply seat is provided on the air outlet of moisture regaining machine, under the guidance of shunt gas supply seat Guiding shunt effect, improve the uniformity of moisture regaining and moisture regaining effect, and then shunt gas supply seat is provided with the flow guide device of steam recovery, can recover the heat in steam, improve heat utilization rate.

The invention relates to a preparation process of chitosan-based ecological leather. The preparation process comprises the following steps: softening bare leather, tanning with chitosan, tanning with vegetable, tanning with zeolite, rewetting, filling, dyeing and fat liquoring, drying and finishing, and finishing. Chitosan tanning, vegetable tanning, zeolite tanning and other chrome-free combined tanning processes are adopted, the defect that single chrome-free tanning is poor in tanning performance is overcome, chrome tanning can be replaced, and tanning chrome pollution is avoided from the source.

The utility model discloses a leather oscillation staking machine which comprises a base, two supporting plates are connected to the upper surface of the base, a fixing plate is connected to the front face of one supporting plate, a hot air box is connected to the upper surface of the fixing plate, a fan is connected to the right side face of the hot air box, a motor is installed on the right side face of the fan, and a heater is installed on the inner wall of the hot air box. A first air outlet pipe is connected to the upper surface of the hot air box, a second air outlet pipe is connected to the front face of the hot air box, air outlets are connected to the ends, away from the hot air box, of the first air outlet pipe and the second air outlet pipe, a water tank is arranged on the upper surface of the fixing plate, a water pump is installed on the upper surface of the water tank, and a sprinkling pipe is connected to the left side face of the water tank. Water in the water tank is driven by the water pump to be sprinkled through the sprinkling pipe, leather softening is facilitated, the motor is started to drive the fan to convey wind power into the hot air box, the softening process of the leather can be accelerated through hot air, and the leather can reach ideal flexibility within a shorter time.

The present invention belongs to the technical field of leather softening processing, and specifically is an environmentally friendly leather softening processing system, comprising a groove, which is annularly opened on both sides of a conveyor belt; a pressing and disengaging unit, which is arranged on both sides of the conveyor belt, and is used to ensure that the leather is in a straight state during the softening process of the leather passing through a rolling roller, and a pressing part in the pressing and disengaging unit is arranged in the groove; the rolling roller comprises a front rolling roller and a rear rolling roller; the front rolling roller is located close to one end of the conveyor belt, and the length of the front rolling roller is less than the distance between the pressing and disengaging units on both sides of the conveyor belt; the length of the rear rolling roller is not less than the distance between the grooves on both sides of the conveyor belt; the present invention solves the problem that in the process of softening by rolling, if the leather is not placed flat enough, it is easy to cause uneven rolling softening, creases on the leather surface after softening, and poor softening effect of the folded part.

The utility model relates to the technical field of leather processing, and discloses a luggage leather softening device which comprises a first supporting plate, a first polished shaft, a second supporting plate, a third supporting plate, a first linear sliding table, a fourth supporting plate, a second linear sliding table, a fifth supporting plate, a pressing piece and a driving piece. And the driving part is controlled to work, so that the pressing parts do reciprocating motion in the axial direction of the first optical shaft, and leather placed on the top face of the first supporting plate is continuously pressed. And a first linear sliding table is controlled to work, so that a fourth supporting plate can be driven to move, finally, a plurality of pressing pieces move in the width direction of the first supporting plate, and therefore leather with different widths can be pressed conveniently. The second linear sliding table is controlled to work, the fifth supporting plate can be driven to move, and finally the multiple pressing pieces move in the length direction of the first supporting plate. And the multiple pressing pieces can move to the gap between every two adjacent pressing pieces, so that the pressing blind area is eliminated, and the whole surface of the leather is pressed.

The invention provides an environment-friendly odorless cow leather treatment process, which belongs to the technical field of cow leather processing, and comprises the following steps: S1, softening cow leather by vibration, patching, buffing the leather, trimming the buffed cow leather, removing parts which cannot be used, and ironing the trimmed cow leather; s2, the ironed cow leather is coated with the coating A in a roller coating mode, and a coating A is obtained; nitrocotton paint is used on the coating A to increase the water resistance, then embossing, milling and toggling are sequentially carried out, and paint B is used for inner sealing operation; the coating A comprises the following components: water, wax, resin, pigment paste and a hand feeling agent; the coating B comprises the following components: water, resin and nonionic oil; s3, the surface of the cowhide finally obtained in the step S2 is sequentially coated with a batter adhesion agent, batter and gloss oil, then the cowhide is subjected to standing and drying, finally, ironing is conducted, and the finished cowhide is obtained. According to the environment-friendly odorless cow leather treatment process, heavy metal wastewater is not generated, and odorless leather is obtained.

An industrial plant (1) for milling tannery leathers comprising a milling drum (2) comprising a hollow body (3), suitable to be rotated around an axis of symmetry (X) through motorization means and inside which the leathers to be treated are received, a closed recirculation circuit (4), operatively connected to the hollow body (3) of the milling drum (2) for the introduction into, and exit from, the hollow body (3) of air (A) for the treatment of the leathers, a dust collector (5) for cleaning the air (A), arranged outside the hollow body (3) of the milling drum (2) and downstream the hollow body (3) following the path of the air (A) in the closed recirculation circuit (4), as a reference direction, forced ventilation means (6), for example, arranged downstream the dust collector (5) following the path of the air (A) inside the closed circuit (4), as a reference direction. In particular, the industrial plant (1) comprises at least one low energy consumption heating element (8), suitable to produce heat which intercepts the air (A) to heat it, and arranged in the closed recirculation circuit (4) outside the hollow body (3).

An adaptive staking machine (1) for softening and stretching flexible laminar products, such as leather and hides, which comprises a base (2) defining a longitudinal axis (L) and having an inlet area (3) for the products to be treated and an outlet area (4) for the treated products, on the base there are mounted at least one pair of beating plates (6, 7) which are mutually facing and configured to act on the opposite faces of the products to be treated, at least one of said plates (6) being fixed and the other (7) movable and associated with drive means, advancement means (5) for the advancement of the products comprising at least one upper elastic belt (8) and at least one lower elastic belt (9), arranged mutually facing and interposed between the pair of beating plates (6, 7), each of said elastic belts (8, 9) having an annular development and being wound on at least one pair of upper end rollers (10, 11) and one pair of lower end rollers (12, 13) with axes perpendicular to the longitudinal direction. The machine comprises an automatic adaptive adjustment system (16, 17) for adjusting the tension (T) of each of the elastic belts (8, 9) and configured to recover the elongation of each individual belt over time and maintain the interposed laminar products perfectly flat, stretched and free from creases and unevenness during advancement and treatment thereof.

The invention discloses leather softening and soaking equipment for leather flexible treatment, and relates to the technical field of leather production, the leather softening and soaking equipment comprises a shell and a supporting frame fixedly mounted on the outer surface of the shell, a feeding part and a liquid inlet pipe are mounted at the two ends of the shell correspondingly, and a sealing cover is detachably mounted at the top of the liquid inlet pipe; a frame plate is fixedly installed at the end, close to the liquid inlet pipe, of the shell, a liquid storage groove is formed in the inner wall of the shell, and a rotating mechanism is installed in the middle of the shell. According to the leather softening and soaking equipment for leather flexibility treatment, a softening agent makes rapid contact with leather through the rotating mechanism, the soaking efficiency is improved, the soaking uniformity of the leather and the softening agent is improved, insufficient local soaking or excessive soaking of the leather is avoided, then through transmission cooperation of a stirring piece and a fixed gear, the leather and the softening agent are mixed more sufficiently, and the leather softening effect is improved. Meanwhile, multiple pieces of leather are separated, stacking and winding of the leather are avoided, and the leather softening efficiency is greatly improved.

The utility model discloses a leather stretching and flattening device for leather product production, which belongs to the technical field of leather product production and comprises a worktable, expanded edges are arranged on three sides of the bottom end of the worktable, supporting legs are fixedly mounted at four corners of the bottom end of each expanded edge, and a fixing seat is fixedly mounted on one side of the top end of the worktable. And a positioning compression roller is rotationally mounted at the upper end in the fixed seat. A second motor is started to enable a second threaded rod to rotate, then a stretching frame moves along a second sliding groove to stretch and unfold leather, then a first motor is started to enable a first threaded rod to rotate so as to enable two limiting arms and a lifting frame to move along a first sliding groove, and meanwhile two hydraulic columns extend at the same time so that a pressing frame can press down and flatten the leather. And electric heating rods are fixedly arranged on the two sides of the interior of the pressing frame, softening and re-shaping of the leather are facilitated, an air cylinder extends to enable a flattening roller to stretch out of the interior of a storage groove, the pressing strength on the leather is enhanced, and the wrinkle area of the leather is shaped and flattened emphatically.

This invention relates to the field of leather processing technology and discloses a tanning process for all-vegetable tanned cowhide floor leather, comprising the following steps: pre-treating raw hides followed by acid immersion pre-tanning, tanning, intermediate treatment, retanning, and post-treatment to obtain finished leather; a first pre-tanning agent is added during the acid immersion pre-tanning process; the tanning process includes the following steps: adding water and the first tanning agent to a groove and rotating; adding a second tanning agent and rotating; adding a third tanning agent and rotating; adding a fourth tanning agent and rotating; adding a fifth tanning agent and rotating; then transferring to a drum, adding water and a sixth tanning agent and rotating; adding a seventh tanning agent and rotating; the retanning process includes the addition of a first retanning agent and a second retanning agent. This invention uses a combination of groove immersion and drum tanning, which greatly shortens the tanning time, reduces the floor space required, and saves labor costs.

The invention discloses softening and flattening equipment for leather production and processing, and relates to the technical field of leather production and processing, the softening and flattening equipment comprises a frame body and a shell fixedly mounted at the top of the frame body, a conveying mechanism is mounted at the top of the frame body, the conveying mechanism is arranged under the shell, a material soaking mechanism is mounted at the feeding end of the frame body, and a material conveying mechanism is mounted at the feeding end of the frame body. A flattening motor is fixedly installed on the side face of the shell through a support, a hot pressing roller is rotatably installed on the inner wall of the shell, and a softening mechanism is installed in the shell. According to the softening and flattening equipment for leather production and processing, soaking is conducted through a softening agent in the material soaking mechanism, the internal fiber structure of leather is effectively changed, the leather is preliminarily softened, then the leather is subjected to loose softening treatment through the softening mechanism, and finally the leather is flattened through hot pressing treatment of the hot pressing roller; the softening and flattening integrated design of the equipment greatly improves the leather production efficiency.

The invention relates to a chrome-free tanning leather production method and system, and the method comprises the following steps: S1, grouping raw leather, and carrying out pre-soaking, fleshing, main soaking, liming, leather splitting, deliming and softening treatment to produce bare leather; s2, pH adjustment, salt-free and pickling-free Tara tanning, zeolite tanning and standing are conducted on the bare skin, and tanned white skin is produced; s3, wringing, shaving, washing, neutralizing, filling and retanning, filling, dyeing, fat liquoring and fixing are conducted on the tanned white leather, and wet leather is produced; s4, the wet leather is subjected to wringing stretching, vacuum drying, hanging airing and humidifying drying, and dry leather is produced; and S5, the dry leather is subjected to standing, water returning, standing, water returning, standing, vibration staking, crust milling, dry toggling flattening and transfer coating, and finished leather is produced. The method has the beneficial effects that the tara tanning material and the zeolite tanning agent are used for salt-free and pickling-free combined tanning, traditional chrome tanning is replaced, a chrome-free and formaldehyde-free process is achieved, the finished leather has the fullness of vegetable tanning leather and the flexibility and elasticity of chrome tanning leather, and the wet heat stability is closer to the high-quality application performance such as chrome tanning leather.

The utility model discloses a kind of softening equipment for leather production, belong to leather softening technical field, including bottom plate, the top of bottom plate is fixedly connected with work plate, the top of work plate is fixedly connected with pillar, pillar is fixedly connected with slide bar on, the side surface of slide bar is slidably connected with sliding block, the side of sliding block is fixedly connected with filter frame, filter frame is equipped with slot on one side, filter plate is inserted in the inside of slot, the top of bottom plate is fixedly connected with electric push rod, the movable end of electric push rod is fixedly connected with traction block, the side of traction block is fixedly connected with softening bucket, through slot and drop groove respectively being equipped on work plate;Through the cooperation of above each device, the filter frame can be with the leather that softening is finished and is slid to the just above of collection frame, after filter plate inside filter frame is extracted, leather will directly fall into collection frame, and the leather collection work is simplified, and the burden of staff is reduced.

The utility model relates to a full-automatic octagonal milling drum with a ventilation device, which comprises a mounting frame, an octagonal milling drum body is arranged in the mounting frame, a ventilation pipe is fixedly mounted on one side of the octagonal milling drum body, the ventilation pipe is communicated with the octagonal milling drum body, and an exhaust fan is arranged in the ventilation pipe; the side frame is installed at one end of the ventilation pipe in a hinged mode, a side groove is formed in one side of the side frame, and a filter screen is movably connected into the side groove in a sleeved mode; the limiting assembly is arranged in the side frame and used for limiting the filter screen; the adjusting assembly is arranged on the ventilation pipe and used for driving the side frame to rotate, when the exhaust fan is overhauled, the motor can be started to drive the lead screw to rotate, the lead screw rotates to drive the moving table to move, the moving table pulls the side frame to rotate through a steel wire rope when moving, and when the side frame is unfolded, the exhaust fan in the ventilation pipe can be overhauled; and the convenience of overhauling the exhaust fan is enhanced, and the device is relatively practical.

The invention relates to the technical field of leather processing, and in particular to a leather softening processing method, comprising: obtaining bare hides after dehairing and degreasing raw hides; determining whether processing of the bare hides meets preset standards according to a bare hide quality evaluation value; stirring and rotating the bare hides that meet the preset standards in a rotary drum to obtain macerated leather; increasing the softener content in the rotary drum when determining that processing of the macerated leathers does not meet the preset standards according to a penetration uniformity characteristic value, or determining whether processing of the macerated leathers meets the preset standards for the second time according to a softness characteristic value; placing the macerated leathers that meet the preset standards in an oscillating stretching machine for oscillation stretching to obtain leather; determining whether processing of the leathers meets the preset standards according to a bending rebound characteristic value; grinding and drying the leathers that meet the preset standards to obtain softened leather, thereby improving leather softening processing efficiency.

The utility model provides a leather softening device, which relates to the technical field of leather processing, and comprises two brackets, the two brackets are positioned on the ground to support the whole, a same conveyor belt is arranged between the two brackets, the conveyor belt can convey leather, a compression roller is rotatably connected to the brackets by virtue of a support plate, and the compression roller is arranged on the support plate. Wherein the pressing roller is a hollow roller, the motor is installed on the supports and drives the pressing roller to rotate through the speed reducer, the pressing roller can roll leather on the conveying belt when the pressing roller rotates, the heating device is fixedly installed on one support, and the heating device can heat the interior of the pressing roller when the pressing roller rotates. The knocking device is arranged on the two supports, the knocking device can knock leather on the conveying belt when the pressing roller rotates, the heating device comprises a fixing box, the effect of heating the leather on the conveying belt is achieved through the heating device, the leather becomes hot, and then softening of the leather is facilitated.

The invention relates to the technical field of leather processing, and discloses a preparation method and application of leather with an oil-wax double-color effect, and the preparation method comprises the following steps: sequentially carrying out first spraying, first ironing, second spraying, standing, polishing, milling, dedusting, second ironing, color separation, third spraying and third ironing on the leather to obtain a finished product of the leather with the oil-wax double-color effect; coloring paste is used in the first guniting process, and oil wax layer paste is used in the second guniting process; the coloring paste and the oil wax layer paste both contain water-based wax. The method disclosed by the invention is high in efficiency and short in processing period, and the prepared oil-wax double-color-effect leather is high in rubbing color fastness and scratch-resistant; in the coloring process, water-based wax is used for replacing a penetrating agent, so that the coating is fast in coloring and more environment-friendly.

The invention relates to the technical field of oscillation staking machines, and discloses a six-row oscillation staking machine with high leather yield, which comprises a base, a connecting frame fixedly connected to the upper surface of the base, side plates fixedly connected to the two side surfaces of the connecting frame, auxiliary roller groups mounted on the outer surfaces of the side plates, and a lower oscillation staking mechanism mounted on the upper surface of the connecting frame, an upper oscillation staking mechanism is mounted between the close side surfaces of the side plates at the two ends; the upper oscillating staking mechanism comprises an upper vibrating plate, an electric cylinder is mounted on the upper surface of the upper vibrating plate, a reinforced nylon toothed plate is mounted on the lower surface of the upper vibrating plate, and a piston rod on the lower surface of the electric cylinder penetrates through the upper vibrating plate and the reinforced nylon toothed plate and then is connected with a toothed nail; through cooperation of the structures, when leather is softened, the effective leather area can be utilized to the maximum extent, and the leather yield during leather softening is increased.

The utility model discloses a leather strip rubbing mechanism for leather processing, which comprises a base, a fixing block is fixedly welded on the upper end face of the base, a screw is connected inside the fixing block through threads, and the leather strip rubbing mechanism for leather processing drives a pressing plate to press the lower end of a leather strip on the side face of the fixing block by rotating and screwing the screw, so that the position of the leather strip is conveniently fixed. Through the design of a pressing plate and a fixing block, the leather strip can be fixed, the friction sleeve is prevented from floating outwards during longitudinal movement and affecting normal rubbing, and the pressing plate is separated from and tightly presses the lower end of the leather strip by rotating a loosening screw, so that the leather strip is conveniently moved upwards to be detached; the connecting rod and the sliding block are driven to rotate by rotating the bolt, the outer side of the friction sleeve is conveniently adjusted to be tightly attached to the inner side of the leather strap, and the design of the sliding block, the connecting rod, the bolt and the friction sleeve can effectively prevent the leather strap from loosening and affecting rubbing processing of the leather strap; therefore, the friction sleeve can rub and process the leather strip.

The utility model discloses leather softening treatment equipment for clothing manufacturing, which comprises a base, two support frames are fixedly mounted at the top of the base, main bearings are sleeved on the inner sides of the two support frames, a mixing drum is sleeved on the inner sides of the main bearings, a sealing cabin door is movably mounted on the outer side of the mixing drum through a hinge, and the sealing cabin door is movably mounted on the outer side of the mixing drum through a hinge. The interiors of the two ends of the stirring barrel are both sleeved with supporting bearings, the interiors of the supporting bearings are sleeved with hollow rotating shafts, and one ends of the hollow rotating shafts are in transmission connection with servo motors; the transmission gear disc is in transmission connection with driving gear power output equipment, the pin shaft is pulled out from the interiors of the supporting plate and the pin hole, the transmission gear disc is promoted to drive the stirring barrel to rotate under the transmission effect, rubbing operation is facilitated, the rubbing and processing efficiency is further improved, and the leather rolling and stirring efficiency is improved.

The utility model discloses a leather water spraying machine which comprises a bottom groove, and a water spraying structure is installed on the bottom groove. The water spraying structure comprises a placing assembly and a plurality of spraying assemblies; the placing assembly comprises a concentric-square-shaped frame, a supporting column and a rotating column are installed on the two side wall faces of the concentric-square-shaped frame correspondingly, the supporting column is movably inserted into the inner side wall face of the bottom groove, the rotating column movably penetrates through the side wall face of the bottom groove, a motor is installed at one end of the rotating column, and a plurality of storage racks are installed on the upper wall face of the concentric-square-shaped frame at equal intervals. Two lead screw modules are symmetrically installed on the upper wall face of the concentric-square-shaped frame, and an n-shaped installation frame is installed at the movable ends of the two lead screw modules. The utility model relates to the technical field of leather processing, a plurality of leathers are placed on the placing component, the two sides of the placing component are alternately inclined through the operation of the motor, and then the plurality of leathers are simultaneously and comprehensively sprayed through the plurality of spraying components, so that the production efficiency of the leathers is improved, and the use is convenient.

The utility model provides a leather milling machine with a dust removal device, which is used for solving the technical problem that the subsequent leather processing quality is influenced as part of existing milling equipment cannot clean dust on leather. The utility model discloses a leather milling machine with a dust removal device. The leather milling machine comprises a protective cylinder, the first roller is rotationally arranged in the protection cylinder; a second drum; the two connecting plates are symmetrically and fixedly arranged between the first roller and the second roller; the plurality of stress plates are fixedly arranged on the inner wall of the second roller; the first discharge hole is formed in the peripheral wall of the first roller in a penetrating manner; and the second discharging opening is formed in the peripheral wall of the second roller in a penetrating mode, the second discharging opening communicates with the second roller and the protection barrel, the second roller drives the stress plate to rotate to soften the leather, dust is made to leave the leather, and the protection barrel collects the dust.

The invention relates to the technical field of leather processing, and discloses a processing technology of cracked cow leather furniture leather, which comprises the following steps: carrying out roller coating of resin on leather subjected to roller coating pretreatment, and carrying out vibration softening, coating and ironing after roller coating to obtain a finished product of the cracked cow leather furniture leather, in the process of roller coating of the resin, roller coating is carried out by using a cracked resinous material; the cracking resinification material comprises cracking resin and water, and the mass ratio of the cracking resin to the water is 1: (1-1.5). The processing technology of the cracking kraft furniture leather is an environment-friendly processing technology, a chromium-free retanning system is adopted, the stability of the cracking effect is improved through the technology, and the cracking qualified rate of different leather blanks is increased to 90% or above through the cracking retanning material.

The utility model belongs to the technical field of leather production equipment, and particularly relates to softening equipment for leather production, which comprises a treatment box, and a feeding hole and a discharging hole are sequentially formed in the left end face of the treatment box from top to bottom. The left end and the interior of the treatment box are sequentially and rotationally connected with two chain wheels distributed left and right and a plurality of evenly-distributed transmission rollers from top to bottom, the top end of the treatment box is fixedly connected with a liquid box, the interior of the liquid box is fixedly connected with a first heating rod, the exhaust end of the liquid box is fixedly connected with an exhaust pipe, and the top end of the interior of the treatment box is fixedly connected with a flow dividing shell. The end, away from the liquid box, of the exhaust pipe is fixedly connected with the flow dividing shell, and a plurality of exhaust holes are formed in the lower end face of the flow dividing shell and located in the upper end of the conveying net belt. According to the utility model, leather to be softened can be preheated, and then the leather is softened in a manner of combining hammering and heating, so that the softening effect and the softening efficiency of the leather are improved.