71results about "Leather edge finishing" patented technology

The invention relates to the field of the manufacture of leather and provides a process for producing the leather. The production cost is reduced by changing the formula of the process. The process comprises the following steps of: preparing a crust, milling the crust, toggling, tumbling, trimming, patching, buffing, blowing dust and cleaning, spraying cations, tumbling for the second time, spraying, repairing corners, tumbling for the third time, trimming for the second time, rolling, obtaining G gloss, pressing a plate, spraying for the second time, obtaining water gloss, tumbling for the fourth time, milling for the second time, staking, tumbling for the fifth time, and spraying a handle agent.

The invention provides a suede leather production method. Suede leathers are obtained through performing water leaching, ash leaching, ash removal, acid leaching, tanning, uniform turning, retanning,neutralization, dyeing and degreasing and drying on leathers. The retanning process comprises the following steps: after 2% of acid-resistance acrylic acid and 0.5% of acid-resistance grease are usedfor treatment, pH is controlled as 3.0; and a chromium retanning agent is added for treatment. The neutralization process comprises the following steps: 150% of water, 2% of sodium formate and 2% of neutralization auxiliary are added; a rotating drum is rotated by 60 min; then, water washing is performed by 10 min; and the temperature is increased to 60 DEG C. The dyeing and greasing process comprises the following steps: 150% of water with a temperature of 40 DEG C, 1.5% of dicyandiamide tannin, 2% of amphoteric synthesized tannin, 4% of tannin extract and 2% of dye are added; the rotating drum is rotated by 50 min; 2% of sulfonated oil, 2% of phosphate and 5% of synthesized oil are added; the rotating drum is rotated by 50 min; 0.8% of formic acid is added; and the drum is stopped by 3 hours. The retanning, neutralization and greasing processes are improved to improve uniformity, hand feel, fullness, reading-writing effect and mercerization of the suede leathers.

The invention discloses a flanging press system and a flanging press method thereof. The flanging press system comprises a portal frame, a system mounting seat is arranged in the middle of the upper surface of the portal frame, a punching device, a gluing device, an edge hammering device and a paper shearing and pulling device are arranged in the front of the system mounting seat and are respectively connected onto a transmission device, a glue vat and heating elements, which are fixed above the portal frame, are arranged in the rear of the system mounting seat, the glue vat is connected to the gluing device and electrically connected with the heating elements, a fly-cutter hinge flanging device corresponding to the edge hammering device is mounted below a workbench of the portal frame, and the punching device, the gluing device, the edge hammering device, the paper shearing and pulling device, the fly-cuter hinge flanging device, the glue vat and the heating elements are controlled to be operated by a computer control device. The flanging press system is shorter in processing time and high in efficiency.

The invention relates to the technical field of belt manufacturing and discloses a full-automatic belt edge grinding machine. The full-automatic belt edge grinding machine comprises a material frame,a fixing frame, a conveying mechanism, a material pulling mechanism, an ascending-descending mechanism, a grinding frame and an edge grinding mechanism, wherein a working plate is carried on the material frame and connected with a clamping assembly which is used for clamping a belt; the fixing frame is slideably connected with an ascending-descending frame in the vertical direction; the conveyingmechanism is used for conveying the working plate towards the side which is far away from the material frame; the material pulling mechanism is used for pulling the working plate from the material frame to the position above the conveying mechanism; the ascending-descending mechanism is used for driving the ascending-descending frame to move vertically; the grinding frame is provided with a driving assembly which is used for driving the working plate to move towards the side which is close to or far away from the fixing frame; and the edge grinding mechanism comprises an edge grinding part, avertical driving part, a first transverse driving part and a second transverse driving part, the edge grinding part is used for grinding the edge of a belt, the vertical driving part drives the edge grinding part to move vertically, and the first transverse driving part and the second transverse driving part drive the edge grinding part to move horizontally. The full-automatic belt edge grinding machine has the effects that during belt grinding, the labor intensity of workers is low, and the machining efficiency is high.

The invention provides a leather treatment technology used for solving the problem that the leather treatment efficiency is low. The leather treatment technology comprises the following steps that fixing is conducted, specifically, the two corresponding ends of leather are fixed to leather clamps, and at least two pieces of leather are fixed to each leather clamp; pre-soaking is conducted; soakingis conducted; pretreatment is conducted; depilation is conducted; swelling is conducted; dealkalizing is conducted; softening is conducted; and pickling is conducted. The leather is fixed to the leather clamps, the leather can be prevented from being rolled into a ball during rotating, the contact degree between the leather and a cleaning chemical liquid is improved, and the leather treatment efficiency is improved.

The invention discloses an adjustable leatherworking edge pressing device which comprises a base. A work plate is placed in the middle of the upper end of the base, and supporting plates are symmetrically arranged on the two sides of the upper end of the base. A supporting frame is erected at the upper ends of the supporting plates, and the middle of the supporting frame is connected with a rotaryseat through a rotating mechanism. A horizontal sliding groove hole is formed in the rotating seat, and a horizontal sliding block is slidingly arranged at the upper end of the rotary seat where thehorizontal sliding groove hole is located. The horizontal sliding block is fixedly connected with the rotary seat through a horizontal transmission mechanism, and the lower end of the horizontal sliding block is connected with a pressing rod through a lifting mechanism. A pressing roll is arranged at the lower end of the pressing rod. The adjustable leatherworking edge pressing device is simple and reasonable in structure, good in buffering performance and convenient to carry; by means of cooperation of the rotating mechanism, the horizontal transmission mechanism and the lifting mechanism, the pressing roll can conveniently press leather in all the directions of the work plate, width indication can be carried out through a width indicating lamp, a worker can conveniently control the pressing position of the pressing roll, and high practicality is achieved.

The invention discloses a multi-head double-arm edge oiling machine which comprises a feeding mechanism, a leather positioning mechanism, an edge oiling mechanism, a drying mechanism and a leather conveying system, wherein the feeding mechanism, the leather positioning mechanism, the edge oiling mechanism and the drying mechanism are sequentially arranged, and the leather conveying system operatesback and forth among the feeding mechanism, the leather positioning mechanism, the edge oiling mechanism and the drying mechanism. The edge oiling mechanism comprises an edge oiling transverse driving device, an edge oiling longitudinal driving device arranged on the edge oiling transverse driving device, and a plurality of edge oiling modules arranged on the edge oiling longitudinal driving device. The leather conveying system is used for conveying a plurality of pieces of leather with the same quantity as the edge oiling modules from the feeding mechanism to the leather positioning mechanism at the same time, then conveying the leather to the edge oiling mechanism for edge oiling, and finally conveying the leather to the drying mechanism, and thus the edge oiling machine can process themultiple pieces of leather simultaneously, and the working capacity of the edge oiling machine is improved.

The invention relates to an automatic edge scraping device, in particular to an automatic edge scraping device for leather wallet production. The invention aims to solve the technical problems so as to provide the automatic edge scraping device for leather wallet production, so that the working efficiency is improved, and meanwhile, no potential safety hazard exists. The automatic edge scraping device for leather wallet production comprises a support plate, a fixed part, a slidable leather scraping part, a cleaning part, a transmission part and the like, wherein the fixed part for pressing through a lifting manner is arranged in the middle of the top part of the support plate; and a slidable leather scraping part for scraping leather through a sliding manner is arranged on the left side ofthe top part of the support plate. According to the automatic edge scraping device for leather wallet production provided by the invention, through the cooperation of the fixed part, the slidable leather scraping part and the transmission part, the leather is firstly pressed tightly and is scraped through a scraper knife, and after the leather under the scraper knife is scraped, the scraper knifecan automatically move to the next position requiring leather scraping, so that a function on automatically scraping the leather is realized.

An embossing apparatus, similar to those used in the paper industry, for use in the leather industry to emboss leather and leather type textiles. The apparatus includes a rotating felt under tension. In a preferred embodiment, the felt wraps around a heated embossing cylinder under tension and there is no nip. In this case, the leather textile is conveyed while sandwiched between the felt and the cylinder and is thereby embossed.

The invention discloses a leather product window edge folding machine. The leather product window edge folding machine comprises a face plate, a support leg, an edge folding assembly and a pedaling assembly, wherein the support leg is provided with a transverse pull rod; the edge folding assembly comprises a wide edge folding assembly and a narrow edge folding assembly; the wide edge folding assembly comprises a wide edge folding mold, and a wide edge folding mold hinge located under planar upper and lower molds, wherein the wide edge folding mold hinge is connected with an iron wire and a reset spring; when the iron wire is pulled down, the wide edge folding mold hinge drives the wide edge folding mold to overturn and press down for folding the edge, and when the iron wire is released, the reset spring drives the wide edge folding mold to reset; the narrow edge folding assembly comprises a narrow edge folding mold, and a narrow edge folding mold hinge located under planar upper and lower molds, wherein the narrow edge folding mold hinge is connected with another iron wire and another reset spring; when the iron wire is pulled down, the narrow edge folding mold hinge drives the narrow edge folding mold to overturn and press down for folding the edge, and when the iron wire is released, the reset spring drives the narrow edge folding mold to reset; the pedaling assembly drives the iron wire to be pulled down or released.

The invention discloses a leather cutting device capable of preventing edge curling. The leather cutting device comprises a workbench and a rack, wherein a clamping plate is installed on the surface of the workbench, an oil tank is fixed below the clamping plate, a high-pressure rubber pipe is installed on the left side of the rack, a hydraulic cylinder is connected above the high-pressure rubberpipe, the right side of the hydraulic cylinder is connected with a piston rod, and the right side of the piston rod is provided with a connecting plate; and a cutting device is fixed on the right sideof the connecting plate, the lower part of the cutting device is connected with a cutting blade and an electric iron through an electric telescopic rod, sliding rails are arranged above the two sidesof the cutting blade and the electric iron. According to the leather cutting device capable of preventing the edge curling, the hydraulic cylinder, the piston rod and the connecting plate are matched, hydraulic energy can be converted into mechanical energy, so that the piston rod is pushed to move back and forth to push the electric telescopic rod to move forwards and backwards on the sliding rails so as to carry out cutting operation on leather, and the high efficiency of cutting is guaranteed.

The invention relates to the technical field of a process for producing cow leather and provides a method for trimming the cow leather capable of maintaining the integrity of hides and increasing the yield and utilization rate of the cow leather during the production process of the cow leather. The method comprises the following steps: preparing wet blue leather, squeezing water, uniformly shaving, sewing, re-tanning, dyeing, carrying out fat liquoring, drying, finishing, coating, trimming and warehousing the finished product. In the step of sewing, the sewed position is the to-be-trimmed position of the wet blue leather, namely, by sewing with a wire, the tearing strength of the to-be-trimmed position of the wet blue leather is increased and the phenomenon of secondary damage of the to-be-trimmed position of the wet blue leather under the actions of twisting in the steps of re-tanning, dyeing, carrying out fat liquoring and finishing is avoided. The method is also applicable to the production process of pigskin and sheepskin.

The invention belongs to the technical field of leather products, and particularly relates to a processing technology of a leather product. The processing technology comprises the following specific steps of A1, skin selection; A2, first soaking; A3, meat removal; A4, secondary soaking; A5, first lime soaking; A6, hair removal; A7, secondary lime soaking; A8, skin planing; A9, surface cleaning; A10, lime removal; A11, cleaning; A12, airing; A13, first skin smoking; A14, first skin covering; A15, secondary skin smoking; A16, medicinal herb decocting; A17, liquid medicine applying; A18, secondary skin covering; A19, third skin smoking; A20, melanterite coating; A21, oil coating; A22, splitting; A23, first skin rolling; A24, third skin covering; A25, secondary skin rolling; A26, skin spreading; A27, trimming; and A28, numbering and warehousing. Under the premise that no chemical raw material is added, the prepared leather has breathable and waterproof characteristics, and is wear-resistant and tough.

The invention discloses a processing technology of a belt, and relates to the field of leather processing. The processing technology comprises the following steps: (1) selecting and cutting leather; (2) disinfecting the leather; (3) sealing the leather; (4) drilling holes in the leather; (5) trimming edges of the leather; (6) making a belt head; and (7) mounting the belt head. The belt is made by dehydrating and sterilizing first-class pigskin, so that bacterium growth of the belt is effectively prevented and the service life of the belt is prolonged; a polyamide thread is seamed on the outer edge of the belt by a circle, so that the strength of the belt is improved and the belt is protected from becoming broken when the edge part of the belt gets worn; by covering the belt with PVC leather, the service life of the belt is prolonged, and in addition, an aesthetic effect is achieved; and by plating a layer of zinc alloy outside the belt head, cost is saved, and meanwhile, the belt head is protected from getting rusted.

The invention relates to a waterborne polyurethane emulsion with a high solid content and a preparation method thereof. The preparation method comprises the steps that firstly, a waterborne polyurethane emulsion A and a polyurethane prepolymer which are low in solid content and small in particle size are prepared respectively, the prepared waterborne polyurethane emulsion A is used for replacing water for emulsification, the polyurethane prepolymer is added into the waterborne polyurethane emulsion A which is stirred at a high speed, and the waterborne polyurethane emulsion B with a high solid content is obtained. Through mutual filling of different emulsion particle sizes, maximum accumulation is achieved, the stability of the emulsion is guaranteed, and meanwhile, the solid content of the prepared waterborne polyurethane emulsion is greater than or equal to 55%.

A visual two-arm edge oiling machine comprises a material supply mechanism, a positioning mechanism, an edge oiling mechanism, a drying mechanism and a leather conveying system, wherein the leather conveying system reciprocates among the material supply mechanism, the positioning mechanism, the edge oiling mechanism and the drying mechanism; the positioning mechanism comprises a transparent positioning plane, a photographic device located above the positioning plane, a light source located under the positioning plane and a control system connected with the photographic device; and the controlsystem is connected with the edge oiling mechanism. Leather is photographed by the photographic device, the control system determines the travelling path of the edge oiling mechanism according to theoutlines of leather images, and thus the edge oiling mechanism can adapt to leather in various shapes efficiently and accurately.

The invention relates to the technical field of leather production and processing, in particular to smooth edge cutting equipment for leather. The smooth edge cutting equipment for the leather comprises a rack, a main cavity is formed in the rack, intermittent action can be achieved through an ingenious mechanical structure of the equipment, and therefore the control cost of the equipment is greatly reduced, and the running reliability of the equipment is improved. Through the edge cutting device, when the edge of the leather is cut, the edge of the leather is more smoothly cut by slowly inclining a cutter and matching with an oblique feeding method, and therefore the problem that the edge is uneven is reduced, and the attractive degree is improved; and finally, materials which are cut by the edge cutting device and accumulated at the corners of the leather can be cut off from the adhesion position with the leather through a finishing device, so that the problem of the tail end adhesion of the leather is solved, the problem that additional cutting is manually carried out traditionally is solved, and the product quality and the production speed are improved.