CN114807459B - Environment-friendly cowhide sofa leather production process and production equipment - Google Patents

Environment-friendly cowhide sofa leather production process and production equipment Download PDF

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Publication number
CN114807459B
CN114807459B CN202210633193.9A CN202210633193A CN114807459B CN 114807459 B CN114807459 B CN 114807459B CN 202210633193 A CN202210633193 A CN 202210633193A CN 114807459 B CN114807459 B CN 114807459B
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China
Prior art keywords
leather
fixedly connected
mounting plate
wall
buffer
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CN202210633193.9A
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CN114807459A (en
Inventor
周金法
同晨博
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Haining Jiavalue Furniture Co ltd
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Haining Jiavalue Furniture Co ltd
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Classifications

    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00Chemical treatment prior to tanning
    • C14C1/04Soaking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/30Belts or like endless load-carriers
    • B65G15/58Belts or like endless load-carriers with means for holding or retaining the loads in fixed position, e.g. magnetic
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00Manufacture of leather; Machines or devices therefor
    • C14B1/40Softening or making skins or leather supple, e.g. by staking, boarding, or crippling machines, by dry mills
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14BMECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00Manufacture of leather; Machines or devices therefor
    • C14B1/58Drying
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00Chemical treatment prior to tanning
    • C14C1/06Facilitating unhairing, e.g. by painting, by liming
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C1/00Chemical treatment prior to tanning
    • C14C1/08Deliming; Bating; Pickling; Degreasing
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C11/00Surface finishing of leather
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00Tanning; Compositions for tanning
    • C14C3/02Chemical tanning
    • C14C3/28Multi-step processes

Abstract

The invention discloses an environment-friendly cowhide sofa leather production device, which comprises: the leather measuring machine comprises a bracket, a conveying roller, a conveying belt, a driving motor, a leather measuring machine body, a fixing mechanism and a leather conveying device, wherein the conveying roller is rotationally connected between the inner walls of two sides of two ends of the bracket; the stability of the leather measuring machine body in leather measurement is improved, and the accuracy of leather measurement is improved.

Description

Environment-friendly cowhide sofa leather production process and production equipment
Technical Field
The invention relates to the production of cowhide sofa leather, in particular to an environment-friendly production process and production equipment of cowhide sofa leather.
Background
The leather measuring machine is used for measuring the area of leather and mainly comprises a frame and a conveying belt arranged on the frame, wherein a plurality of sensors for detecting the area of leather are uniformly distributed in the middle of the conveying belt. The sensor transmits the change in the detected signal to a computing system, which calculates the area of the hide as it moves over the conveyor belt. In order to ensure that the leather measuring machine can accurately measure the area of leather, the leather is required to be flattened on a conveying belt during feeding, after the area of the leather is calculated by a calculating system, the leather is taken out from the discharge end of the conveying belt by a worker, and finally the taken-out leather is uniformly stacked, so that the subsequent processing of the leather is facilitated.
In the existing leather measuring machine, leather slides due to unfixed leather in the leather conveying process, so that an inaccurate measurement result is caused.
Disclosure of Invention
The invention aims at: aiming at the problems of the background technology, the production process and the production equipment of the environment-friendly cowhide sofa leather are provided.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
An environmental protection cowhide sofa leather production facility includes: the leather measuring machine comprises a support, conveying rollers are rotatably connected between inner walls of two sides of two ends of the support, a conveying belt is wound between the two conveying rollers, a driving motor for driving the conveying rollers to rotate is fixedly connected to the support, a leather measuring machine body is arranged on the upper surface of the support, and a fixing mechanism for fixing leather on the upper surface of the conveying belt and moving along the conveying belt is arranged on the upper surface of the support.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the fixing mechanism comprises a mounting plate, an air extracting piece, air extracting holes and adsorption holes, wherein the mounting plate is connected to the upper surface of the support in a sliding mode along the length direction of the support and is arranged in a hollow mode, the air extracting piece is arranged on the side wall of the mounting plate, the air extracting holes are uniformly arranged on the upper surface of the mounting plate, the adsorption holes are uniformly arranged on the conveying belt, the mounting plate is located inside the conveying belt, and the upper surface of the mounting plate is abutted to the upper surface of the inner wall of the conveying belt.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the air extraction piece comprises an air extraction pipe fixedly connected to the side wall of the mounting plate and an air extraction pump fixedly connected to one end of the air extraction pipe, and one end of the air extraction pipe is communicated with the inside of the mounting plate.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the upper surface of the support is fixedly connected with a sliding rod, the lower surface of the mounting plate is fixedly connected with a sliding ring, and the sliding ring is slidably connected to the sliding rod.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the reset piece is arranged on the support and comprises a mounting seat fixedly connected to one end of the support, a fixed pulley rotatably connected to the mounting seat, a reset rope with one end fixedly connected to the outer wall of the mounting plate and a balancing weight arranged on the other end of the reset rope, and the reset rope is wound on the fixed pulley.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the slip ring is characterized in that a vertical rod is fixedly connected to the outer wall of the slip ring, a vertical pipe is fixedly connected to the side wall of the mounting plate and is slidably connected to the outer wall of the vertical rod, a mounting spring is sleeved on the outer wall of the vertical rod, and two ends of the mounting spring are respectively and fixedly connected to the lower surface of the vertical pipe and the outer wall of the vertical rod.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the buffer plate is fixedly connected to one end, close to the mounting seat, of the upper surface of the support, the buffer hole is formed in the buffer plate, a buffer rod is slidably connected in the buffer hole, a baffle ring is fixedly connected to the outer wall of one end, close to the mounting seat, of the buffer rod, a buffer spring is sleeved on the outer wall of the buffer rod, and two ends of the buffer spring are fixedly connected to the baffle ring and the buffer plate respectively.
The production process of the environment-friendly cowhide sofa leather comprises the following steps of,
Step one, batching, namely sorting raw barks of barks with smaller width and thickness, and processing the raw barks in the same drum;
soaking, wherein the purpose of the process is to restore the original skin to the fresh skin state;
step three, dehairing and degreasing: removing grease in cells in the skin and hair on the surface of the original skin to expose natural and fine grain surfaces;
step four, ash leaching: liming, also called alkali swelling, means that alkali is added to expand the skin to a certain thickness, which is beneficial to splitting;
step five, deashing and pickling: the process is to remove the excessive alkali in the previous liming process; adding proper acid to neutralize excessive alkali to reach the pH value required for tanning;
step six, tanning: the collagen groups of the leather fibers are connected by trivalent chromium ions, so that the leather is endowed with plump handfeel, and the tensile strength and the tearing strength of the leather are enhanced;
Step seven, retanning;
Step eight, dyeing: the leather is endowed with a certain color, and the key is to improve the combination rate of the dye and the leather fiber and the combination strength of the dye and the leather fiber;
step nine, fatting: the leather is properly and reasonably fatliquoring treatment is carried out on crust leather, so that the crust leather absorbs proper amount of fatliquoring material, the softness and elasticity of the original industry are recovered, the stiff hair plates and cracking of the leather are prevented, and the leather is endowed with certain service performance;
Step ten, drying;
step eleven, softening: the leather is pulled to the periphery on the stretching plate, so that the leather is stretched as far as possible;
step twelve, measuring leather by a leather measuring machine;
and thirteenth step, coating.
The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the alkali used in the fourth step is sodium hydroxide and hydrogen peroxide.
The invention has the beneficial effects that: 1. with leather tiling on the conveyer belt, the aspiration pump starts, the aspiration pump is through the air pumping of exhaust tube with the inside air of mounting panel for the inside negative pressure that forms of mounting panel, under the effect of atmospheric pressure, mounting panel upper surface laminating is on conveyer belt inner wall lower surface, the gas vent aligns with the absorption hole, under the effect of atmospheric pressure, leather is adsorbed on the conveyer belt upper surface, carry leather into the leather machine through the conveyer belt and measure, through such setting, simple structure, convenient operation has improved the stability when leather machine body is measured to leather, has improved the accuracy to leather measurement.
2. Through fixed standpipe on the mounting panel lateral wall, a fixedly connected with montant on the sliding ring outer wall, standpipe sliding connection is on the montant outer wall, the installation spring cover is established on the montant outer wall, the both ends of installation spring are fixed connection respectively on standpipe lower extreme terminal surface and montant outer wall, when the aspiration pump starts, mounting panel upward movement, the standpipe upwards slides, mounting panel upper surface butt is on conveyer belt inner wall lower surface, after the aspiration pump stop work, the standpipe downwards slides under the effect of installation spring restoring force, the mounting panel breaks away from the conveyer belt, through such setting, moreover, the steam generator is simple in structure, and convenient operation has improved the stability of mounting panel butt on the conveyer belt lower surface, wear between mounting panel and the conveyer belt has been reduced, the influence of mounting panel to the conveyer belt motion has been reduced.
3. Through fixedly connected with mount pad on support one end upper surface, a fixed connection rope that resets on the mounting panel lateral wall, be vertical downward movement after the fixed pulley on the mount pad is walked around to the other end of rope that resets, fixedly connected with balancing weight on the one end that the rope was kept away from the mounting panel that resets, after the aspiration pump stop work, under the action of gravity, the balancing weight drives the rope that resets and moves, the rope that resets drives the mounting panel and slides on the slide bar, through such setting, the steam generator is simple in structure, and convenient operation has made things convenient for the operator to reset the mounting panel.
4. Through fixedly connected with buffer board on the one end upper surface that the support is close to the mount pad, buffer pole sliding connection is in the buffer hole on the buffer board, and buffer spring cover is established on the buffer pole outer wall, and the mounting panel strikes buffer pole one end after sliding on the slide bar, through such setting, simple structure, convenient operation has reduced the mounting panel and has impacted the possibility on the mount pad, has made things convenient for buffering the mounting panel.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is an enlarged view of FIG. 1 at B;
FIG. 4 is an enlarged view of FIG. 1 at C;
In the figure: 1. a bracket; 2. a conveying roller; 3. a conveyor belt; 4. a driving motor; 5. a leather measuring machine body; 6. a fixing mechanism; 7. a mounting plate; 8. an air extracting member; 9. an air suction hole; 10. adsorption holes; 11. an exhaust pipe; 12. an air extracting pump; 13. a slide bar; 14. a slip ring; 15. a reset member; 16. a mounting base; 17. a fixed pulley; 18. a reset rope; 19. balancing weight; 20. a vertical rod; 21. a standpipe; 22. installing a spring; 23. a buffer plate; 24. buffering holes; 25. a buffer rod; 26. a baffle ring; 27. a buffer spring; 28. an adjusting seat; 29. a long rod; 30. a U-shaped frame; 31. a limit rack; 32. a through hole; 33. a positioning rod; 34. positioning a rack; 35. and positioning a spring.
Detailed Description
The following description of the embodiments of the present invention will be made more fully hereinafter with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention.
As shown in fig. 1,2, 3 and 4, the production equipment for the environment-friendly leather sofa comprises a support 1, wherein a conveying roller 2 is rotatably connected between inner walls of two sides of two ends of the support 1, a conveying belt 3 is wound between the two conveying rollers 2, a driving motor 4 for driving the conveying rollers 2 to rotate is fixedly connected to the support 1, and a leather measuring machine body 5 is arranged on the upper surface of the support 1.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, two ends of the side wall of the bracket 1 are fixedly connected with an adjusting seat 28, a long rod 29 is fixedly connected between the two adjusting seats 28, two long rods 29 are slidably connected with a U-shaped frame 30, an opening of the U-shaped frame 30 is downward, one end of the U-shaped frame 30 close to the opening is slidably connected with the long rod 29, the leather measuring machine body 5 is fixedly connected with the inner wall of the U-shaped frame 30, the side wall of the bracket 1 is fixedly connected with a limiting rack 31, a through hole 32 is formed in the outer wall of the lower end of the U-shaped frame 30, a positioning rod 33 is installed in the through hole 32, one end of the positioning rod 33 is fixedly connected with a positioning rack 34, a positioning spring 35 is sleeved on the outer wall of the positioning rod 33, two ends of the positioning spring 35 are fixedly connected with the outer wall of the positioning rod 33 and the U-shaped frame 30 respectively, and the positioning rack 34 and the limiting rack 31 are meshed under the restoring force of the positioning spring 35.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a fixing mechanism 6 for fixing leather on the upper surface of the conveying belt 3 and moving along with the conveying belt 3 is arranged on the upper surface of the support 1, the fixing mechanism 6 comprises a mounting plate 7, an air extracting piece 8, air extracting holes 9 and adsorption holes 10, the mounting plate 7 is arranged on the upper surface of the support 1, the mounting plate 7 is arranged in a hollow mode, the mounting plate 7 is positioned inside the conveying belt 3, the mounting plate 7 can slide back and forth along the length direction of the support 1, the upper surface of the mounting plate 7 is abutted on the upper surface of the inner wall of the conveying belt 3, the air extracting piece 8 is arranged on the side wall of the mounting plate 7, the air extracting piece 8 is used for extracting air inside the mounting plate 7, negative pressure is arranged inside the mounting plate 7, the air extracting holes 9 are formed on the upper surface of the mounting plate 7, a plurality of adsorption holes 10 are uniformly formed in intervals on the upper surface of the mounting plate 7, the adsorption holes 10 are formed on the conveying belt 3, the interval between the adsorption holes 9 along the width direction of the mounting plate 7 is the same as the interval between the adsorption holes 10 along the width direction of the conveying belt 3.
As shown in fig. 1,2,3 and 4, the air extracting member 8 includes an air extracting tube 11 and an air extracting pump 12, one end of the air extracting tube 11 is fixedly connected to the side wall of the mounting plate 7, the air extracting tube 11 is communicated with the inside of the mounting plate 7, the air extracting pump 12 is fixedly connected to the other end of the air extracting tube 11, and air in the mounting plate 7 is extracted through the air extracting pump 12 and the air extracting tube 11, so that negative pressure is formed in the mounting plate 7.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a sliding rod 13 is fixedly connected to the upper surface of the support 1 along the length direction of the support 1, a sliding ring 14 is installed on the lower surface of the mounting plate 7, the sliding ring 14 is slidably connected to the sliding rod 13, a vertical rod 20 is fixedly connected to the outer wall of the sliding ring 14 for better fixing leather on the conveyor belt 3, a vertical pipe 21 is fixedly connected to the side wall of the mounting rod, the vertical pipe 21 is slidably connected to the outer wall of the vertical rod 20, a mounting spring 22 is sleeved on the outer wall of the vertical rod 20, and two ends of the mounting spring 22 are fixedly connected to the lower surface of the vertical pipe 21 and the outer wall of the vertical rod 20 respectively.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a reset piece 15 for facilitating reset of the mounting plate 7 is arranged on the support 1, the reset piece 15 comprises a mounting seat 16, a fixed pulley 17, a reset rope 18 and a balancing weight 19, the mounting seat 16 is fixedly connected to the upper surface of one end of the support 1, the fixed pulley 17 is rotationally connected to the mounting seat 16, one end of the reset rope 18 is fixedly connected to the side wall of the mounting plate 7, the other end of the reset rope 18 is in a vertical state after bypassing the fixed pulley 17, the balancing weight 19 is fixedly connected to one end of the reset rope 18 far away from the mounting plate 7, when the air pump 12 stops working, the pressure inside the mounting frame is recovered, the mounting plate 7 is separated from the conveying belt 3, and the balancing weight 19 drives the mounting plate 7 to slide on the sliding rod 13 through the reset rope 18 under the action of gravity.
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, in order to reduce the impact between the mounting plate 7 and the mounting seat 16, a buffer plate 23 is fixedly connected to one end, close to the mounting seat 16, of the upper surface of the bracket 1, a buffer hole 24 is formed in the buffer plate 23, a buffer rod 25 is slidably connected in the buffer hole 24, a baffle ring 26 is fixedly connected to the outer wall of one end, close to the mounting seat 16, of the buffer rod 25, a buffer spring 27 is sleeved on the outer wall of the buffer rod 25, two ends of the buffer spring 27 are fixedly connected to the baffle ring 26 and the buffer plate 23 respectively, the mounting plate 7 slides on the slide rod 13 under the action of gravity of the balancing weight 19, one side of the mounting plate 7 impacts on the buffer rod 25, and the mounting plate 7 is buffered under the action of the buffer spring 27.
When an operator doses leather, the operator flatly tiles leather on the conveyor belt 3, the air pump 12 is started, the air pump 12 pumps air inside the mounting plate 7 through the air pump 11, the inside of the mounting plate 7 is under negative pressure, the mounting plate 7 is adsorbed on the upper surface of the inner wall of the conveyor belt 3 under the action of atmospheric pressure, the air pump 9 is aligned with the adsorption hole 10, the leather is adsorbed on the upper surface of the conveyor belt 3 under the action of atmospheric pressure, the vertical pipe 21 slides on the vertical rod 20, the upper surface of the mounting plate 7 is tightly attached to the upper surface of the inner wall of the conveyor belt 3, the driving motor 4 drives the conveying roller 2 to rotate, the conveying roller 2 drives the conveyor belt 3 to move, the conveyor belt 3 conveys leather into the leather metering machine body 5 to be measured, after the measurement is completed, the conveyor belt 3 conveys the leather from the leather metering machine body 5, the air pump 12 stops working, the mounting plate 7 is separated from the conveyor belt 3, the balancing weight 19 drives the reset rope 18 to move under the action of gravity of the balancing weight 19, the reset rope 18 drives the mounting plate 7 to slide on the impact 13, the mounting plate 7 slides on the impact 13 on the slide rod 25, the slide rod is driven by the slide rod 25, and the buffer spring 27 is used under the action of the buffer spring.
The production process of the environment-friendly cowhide sofa leather is characterized by comprising the following steps of: comprises the steps of,
Step one, batching, namely sorting raw barks of barks with smaller width and thickness, and processing the raw barks in the same drum;
soaking, wherein the purpose of the process is to restore the original skin to the fresh skin state;
step three, dehairing and degreasing: removing grease in cells in the skin and hair on the surface of the original skin to expose natural and fine grain surfaces;
step four, ash leaching: liming, also called alkali swelling, means adding sodium hydroxide and hydrogen peroxide to swell the skin to a certain thickness, which is beneficial to splitting;
step five, deashing and pickling: the process is to remove the excessive alkali in the previous liming process; adding proper acid to neutralize excessive alkali to reach the pH value required for tanning;
step six, tanning: the collagen groups of the leather fibers are connected by trivalent chromium ions, so that the leather is endowed with plump handfeel, and the tensile strength and the tearing strength of the leather are enhanced;
Step seven, retanning;
Step eight, dyeing: the leather is endowed with a certain color, and the key is to improve the combination rate of the dye and the leather fiber and the combination strength of the dye and the leather fiber;
step nine, fatting: the leather is properly and reasonably fatliquoring treatment is carried out on crust leather, so that the crust leather absorbs proper amount of fatliquoring material, the softness and elasticity of the original industry are recovered, the stiff hair plates and cracking of the leather are prevented, and the leather is endowed with certain service performance;
Step ten, drying;
step eleven, softening: the leather is pulled to the periphery on the stretching plate, so that the leather is stretched as far as possible;
step twelve, measuring leather by a leather measuring machine;
Thirteenth step of coating
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (5)

1. An environmental protection cowhide sofa leather production facility, its characterized in that includes: the leather measuring machine comprises a support (1), a conveying roller (2) is rotatably connected between inner walls of two sides of two ends of the support (1), a conveying belt (3) is wound between the two conveying rollers (2), a driving motor (4) for driving the conveying rollers (2) to rotate is fixedly connected to the support (1), a leather measuring machine body (5) is arranged on the upper surface of the support (1), and a fixing mechanism (6) for fixing leather on the upper surface of the conveying belt (3) and moving along with the conveying belt (3) is arranged on the upper surface of the support (1);
The fixing mechanism (6) comprises a mounting plate (7) which is connected to the upper surface of the bracket (1) in a sliding manner along the length direction of the bracket (1) and is arranged in a hollow manner, air suction pieces (8) arranged on the side walls of the mounting plate (7), air suction holes (9) uniformly arranged on the upper surface of the mounting plate (7) at intervals, adsorption holes (10) uniformly arranged on the conveying belt (3) at intervals, wherein the mounting plate (7) is positioned in the conveying belt (3) and the upper surface of the mounting plate (7) is abutted against the upper surface of the inner wall of the conveying belt (3);
the air extraction piece (8) comprises an air extraction pipe (11) fixedly connected to the side wall of the mounting plate (7) and an air extraction pump (12) fixedly connected to one end of the air extraction pipe (11), and one end of the air extraction pipe (11) is communicated with the inside of the mounting plate (7);
A sliding rod (13) is fixedly connected to the upper surface of the bracket (1), a sliding ring (14) is fixedly connected to the lower surface of the mounting plate (7), and the sliding ring (14) is slidably connected to the sliding rod (13);
The device comprises a support (1), and is characterized in that a reset piece (15) for facilitating resetting of the mounting plate (7) is arranged on the support (1), the reset piece (15) comprises a mounting seat (16) fixedly connected to one end of the support (1), a fixed pulley (17) rotatably connected to the mounting seat (16), a reset rope (18) with one end fixedly connected to the outer wall of the mounting plate (7) and a balancing weight (19) arranged at the other end of the reset rope (18), and the reset rope (18) is wound on the fixed pulley (17).
2. The environmental protection type cowhide sofa leather production equipment according to claim 1, wherein: a vertical rod (20) is fixedly connected to the outer wall of the slip ring (14), a vertical pipe (21) is fixedly connected to the side wall of the mounting plate (7), the vertical pipe (21) is slidably connected to the outer wall of the vertical rod (20), a mounting spring (22) is sleeved on the outer wall of the vertical rod (20), and two ends of the mounting spring (22) are fixedly connected to the lower surface of the vertical rod (20) and the outer wall of the vertical rod (20) respectively.
3. The environmental protection type cowhide sofa leather production equipment according to claim 2, wherein: one end of the upper surface of the support (1) close to the mounting seat (16) is fixedly connected with a buffer plate (23), a buffer hole (24) is formed in the buffer plate (23), a buffer rod (25) is slidably connected in the buffer hole (24), a baffle ring (26) is fixedly connected to the outer wall of one end of the buffer rod (25) close to the mounting seat (16), a buffer spring (27) is sleeved on the outer wall of the buffer rod (25), and two ends of the buffer spring (27) are fixedly connected to the baffle ring (26) and the buffer plate (23) respectively.
4. The production process of the environment-friendly leather sofa leather by using the environment-friendly leather sofa leather production equipment according to claim 1, which is characterized in that: the method comprises the following steps of firstly, grouping, namely sorting raw barks of barks with relatively close width and thickness, and processing the raw barks in the same drum;
soaking, wherein the purpose of the process is to restore the original skin to the fresh skin state;
step three, dehairing and degreasing: removing grease in cells in the skin and hair on the surface of the original skin to expose natural and fine grain surfaces;
step four, ash leaching: liming, also called alkali swelling, means that alkali is added to expand the skin to a certain thickness, which is beneficial to splitting;
step five, deashing and pickling: the process is to remove the excessive alkali in the previous liming process; adding proper acid to neutralize excessive alkali to reach the pH value required for tanning;
step six, tanning: the collagen groups of the leather fibers are connected by trivalent chromium ions, so that the leather is endowed with plump handfeel, and the tensile strength and the tearing strength of the leather are enhanced;
Step seven, retanning;
Step eight, dyeing: the leather is endowed with a certain color, and the key is to improve the combination rate of the dye and the leather fiber and the combination strength of the dye and the leather fiber;
step nine, fatting: the leather is properly and reasonably fatliquoring treatment is carried out on crust leather, so that the crust leather absorbs proper amount of fatliquoring material, the softness and elasticity of the original industry are recovered, the stiff hair plates and cracking of the leather are prevented, and the leather is endowed with certain service performance;
Step ten, drying;
step eleven, softening: the leather is pulled to the periphery on the stretching plate, so that the leather is stretched as far as possible;
step twelve, measuring leather by a leather measuring machine;
and thirteenth step, coating.
5. The process for producing the environment-friendly leather sofa according to claim 4, which is characterized in that: the alkali used in the fourth step is sodium hydroxide and hydrogen peroxide.
CN202210633193.9A 2022-06-07 2022-06-07 Environment-friendly cowhide sofa leather production process and production equipment Active CN114807459B (en)

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CN202210633193.9A CN114807459B (en) 2022-06-07 2022-06-07 Environment-friendly cowhide sofa leather production process and production equipment

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Application Number Priority Date Filing Date Title
CN202210633193.9A CN114807459B (en) 2022-06-07 2022-06-07 Environment-friendly cowhide sofa leather production process and production equipment

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CN114807459B true CN114807459B (en) 2024-04-19

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EP1394079A1 (en) * 2002-07-19 2004-03-03 Sundwig GmbH Conveying device in particular for suspended transport of workpieces
EP1892204A1 (en) * 2006-08-25 2008-02-27 Christian Beer Vacuum conveyor for transport, depositing and stacking of flat objects
JP2008183825A (en) * 2007-01-30 2008-08-14 Fuji Xerox Co Ltd Belt rotating device and image forming apparatus
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