CN107937632B - Method for manufacturing sofa leather - Google Patents

Abstract

The invention provides a method for manufacturing sofa leather. The method solves the technical problems that the steps of the existing manufacturing method are too complex, a large amount of manufacturing time is required, the manufacturing is complicated and the like. The manufacturing method of the sofa leather comprises the following steps: a. spreading the leather blank on a through type wringing machine for wringing water, and removing 78-96% of water in the leather blank; b. drying the leather blank by a drying device; c. smearing a repairing agent on the leather blank; d. leather grinding is carried out on the leather blank through a leather grinding machine; e. sizing the leather blank by a roller coating device; f. spraying the coating on the leather blank by a spraying device to obtain leather; g. embossing or printing the leather, and performing embossing roll and pressing plate; h. a milling or softening, a softening machine and a milling drum; i. ironing and pressing the leather at high temperature to obtain finished sofa leather; j. and (6) measuring leather, detecting and warehousing. The invention has the advantage of simple and convenient manufacture.

Description

Method for manufacturing sofa leather

Technical Field

The invention relates to a method for manufacturing sofa leather.

Background

Sofa leather is a main raw material for manufacturing real leather sofa, and is used for manufacturing the surface of the sofa.

Through retrieval, for example, the chinese patent document discloses a method for making anti-pollution sofa leather [ application number: 201310173179.6, respectively; publication No.: CN 104141237B ]. The manufacturing method of the anti-pollution sofa leather is characterized by comprising the following steps: the method comprises the following specific steps: the method comprises the following steps: mixing ingredients by a wet method: a. stirring 5-10kg of dimethylformamide, 2-10kg of color paste, 10-30kg of wood powder and 1-5kg of surfactant at high speed for 60-90 minutes, and then filtering for later use; b. mixing and stirring 80-100kg of wet-process polyurethane resin and 150-280kg of dimethylformamide for 20-30 minutes, standing for 20-45 minutes, mixing the mixture with the mixture obtained in the step a, uniformly stirring in a reaction kettle capable of vacuumizing at negative pressure, vacuumizing, defoaming, filtering, standing still, and defoaming for later use, wherein the temperature in the reaction kettle capable of vacuumizing at negative pressure is controlled to be 20-40 ℃; step two: and (3) wet bass production: selecting proper sofa leather base cloth, soaking the selected sofa leather base cloth in 12-25% dimethylformamide aqueous solution, ironing and drying the sofa leather base cloth by using a hot roller at 60-120 ℃, then coating and scraping the mixture obtained in the step one, then adding the mixture into 15-30% dimethylformamide aqueous solution for solidification, and finally obtaining the wet-process sofa leather bass through foaming, multiple washing and drying procedures; step three: mixing ingredients by a dry method: c. mixing 80-100kg of polyurethane surface layer resin, 40-70kg of organic solvent, 0.5-2kg of auxiliary agent and 5-8kg of environment-friendly toner, uniformly stirring at high speed to obtain dry-process fabric with the environment-friendly function, filtering and sealing for later use; d. mixing 80-100kg of polyurethane adhesive resin, 20-60kg of organic solvent, 0.5-2kg of auxiliary agent and 5-8kg of environment-friendly toner, uniformly stirring at high speed to prepare an environment-friendly dry-process adhesive, filtering and sealing for later use; step four: selecting a release paper pattern; step five: dry-process veneering: uniformly coating the dry-process fabric prepared in the step c on the pattern of the selected release paper, drying to obtain an environment-friendly PU surface layer dry film, uniformly coating the dry-process binder prepared in the step d on the environment-friendly PU surface layer dry film, flatly sticking the wet-process sofa leather bass prepared in the step two on the surface of the dry-process binder when the solvent is volatilized to 40-80% and dried, and separating the dry-process binder from the release paper after drying and cooling to obtain a semi-finished product; step six: and (3) post-treatment: and coating a surface treatment material with an oil stain prevention function on the semi-finished product, and drying to obtain the anti-pollution sofa leather finished product with the oil stain prevention function.

Although the manufacturing method disclosed in the patent can improve the oil stain resistance of the sofa leather, the steps of the manufacturing method are too complicated, a large amount of manufacturing time is required, and the manufacturing is complicated, so that it is necessary to design a manufacturing method of the sofa leather.

Disclosure of Invention

The invention aims to provide a method for manufacturing sofa leather aiming at the problems in the prior art, and the method has the characteristic of simple and convenient manufacturing.

The purpose of the invention can be realized by the following technical scheme: the manufacturing method of the sofa leather is characterized by comprising the following steps: a. spreading the leather blank on a through type wringing machine for wringing water, and removing 78-96% of water in the leather blank; b. drying the leather blank by a drying device for 1-3h at the drying temperature of 40-60 ℃; c. smearing a repairing agent on the leather blank; d. leather grinding is carried out on the leather blank through a leather grinding machine; e. sizing the leather blank by a roller coating device; f. spraying the coating on the leather blank by a spraying device to obtain leather; g. embossing or printing the leather, and performing embossing roll and pressing plate; h. a milling or softening, a softening machine and a milling drum; i. ironing and pressing the leather at high temperature to obtain finished sofa leather; j. and (6) measuring leather, detecting and warehousing.

By adopting the method, the sofa leather can be manufactured by the steps of water squeezing, drying, repairing, leather grinding, roller coating, spraying and the like, the consistency of products can be ensured, and the manufacturing is simple and convenient.

The leather blank is cowhide.

The wound repairing agent in the step d comprises the following raw materials in parts by weight: 70-80 parts of aqueous polyurethane emulsion, 18-30 parts of acrylic emulsion, 9-15 parts of hollow microspheres, 2-6 parts of rheological additive, 0.1-0.3 part of preservative and 60-100 parts of deionized water.

The coating in the step g is prepared from the following raw materials in percentage by weight: 12-14% of acrylic resin, 8-12% of polyurethane, 0.1-0.4% of white carbon black, 0.04-0.09% of phenol, 1-3% of flame retardant, 0.02-0.05% of sodium benzoate and the balance of water.

The spraying thickness in the step g is 0.1-0.4 mm.

The ironing temperature in the step j is 110-.

The roller coating device in the step e comprises a first base, a first support is fixed on the first base, a conveying belt for conveying sofa leather is arranged on the first support, one end of the conveying belt is an input end, the other end of the conveying belt is an output end, a first cleaning mechanism for cleaning sofa leather and a roller coating mechanism for roller coating sofa leather are further arranged on the first support, the roller coating mechanism comprises a coating roller, an adjusting roller, a left limiting piece, a right limiting piece, a storage barrel, a moving seat, a feeding pipe, a stirring bar and a first vibration motor, the coating roller and the adjusting roller are horizontally arranged on the first support in an axial fixing and circumferential rotating mode, the coating roller is located right above the output end of the conveying belt, a gap for the sofa leather to pass through is formed between the coating roller and the conveying belt, the end part of the coating roller is further connected with a first stepping motor capable of driving the coating roller to rotate, the left limiting piece is arranged on, the left limiting piece is connected with a push rod motor I which can drive the left limiting piece to move back and forth, the left limiting piece is respectively contacted with the coating roller and the adjusting roller, the right limiting piece is arranged at the other side of the support I, the right limiting piece is connected with a push rod motor II which can drive the right limiting piece to move back and forth, the right limiting piece is respectively contacted with the coating roller and the adjusting roller, a temporary storage part for temporarily storing slurry is formed among the left limiting piece, the right limiting piece, the coating roller and the adjusting roller, a moving seat is arranged on the support I, the moving seat is connected with a moving structure which can drive the moving seat to move back and forth, a feeding pipe is obliquely arranged on the moving seat, the upper end of the feeding pipe is communicated with the side part of the storage barrel through a connecting pipe I, a first conveying pump is arranged on the connecting pipe I, the lower end of the feeding pipe is a discharge port, the discharge port faces the temporary storage part, the stirring strip lower extreme is located the portion of keeping in, still sets up a plurality of water conservancy diversion holes one that are the V-arrangement and the water conservancy diversion hole two that is the shape of falling V on the stirring strip lower extreme, and vibrating motor one is fixed at stirring strip middle part.

The working principle of the roller coating device is as follows: a push rod of the push rod motor I is controlled to drive the left limiting sheet to move back and forth, the left limiting sheet is adjusted to a required position, a push rod of the push rod motor II is controlled to drive the right limiting sheet to move back and forth, and the right limiting sheet is adjusted to a required position; an output shaft of the stepping motor I is controlled to drive the coating roller to vibrate, and sofa leather is conveyed to the position below the coating roller through a conveying belt; open delivery pump one, carry conveying pipe department through connecting pipe one with the thick liquids in the storage vat, export the portion of keeping in by the conveying pipe in, drive through the removal structure and remove seat round trip movement, remove the seat and drive conveying pipe and stirring strip round trip movement, simultaneously, control vibrating motor drives the stirring strip and vibrates from top to bottom, and the stirring strip is with the thick liquids stirring in the portion of keeping in, coats with the paint roller and scribbles the thick liquids on sofa leather, can guarantee the quality of sofa leather roller coat, and the roller coat is of high quality.

And the first connecting pipe is also provided with a flow regulating valve.

By adopting the structure, the flow in the first connecting pipe can be adjusted through the flow adjusting valve, and the adjustment is convenient.

The height of the left limiting piece is lower than that of the right limiting piece.

By adopting the structure, excessive slurry in the temporary storage part can overflow from the left limiting piece.

The bracket I is also provided with an overflow structure, the overflow structure comprises an overflow groove and a first filter screen, the upper end of the overflow groove is connected with the side part of the left limiting sheet, the lower end of the overflow groove is communicated with the upper part of the storage barrel, and the first filter screen is arranged in the middle of the overflow groove.

By adopting the structure, excessive slurry in the temporary storage part can be conveyed back to the storage bucket through the overflow groove.

The first cleaning mechanism comprises a first stand column, a swing rod, an air blowing pipe, a second stepping motor and an air pump, the first stand column is fixed on the first support, the second stepping motor is fixed on the first stand column, an output shaft of the second stepping motor is horizontally arranged, the upper end of the swing rod is connected with the end part of the output shaft of the second stepping motor, the lower end of the swing rod is a free end, the air blowing pipe is fixed on the free end, and the air blowing pipe is communicated with the air pump through a second connecting pipe.

When the sofa leather on the conveyer belt needs to be cleaned, the air pump is started, the outside air is conveyed to the air blowing pipe through the second connecting pipe, meanwhile, the output shaft of the second control stepping motor drives the oscillating rod to swing back and forth, the oscillating rod drives the air blowing pipe to swing back and forth, the air blowing pipe cleans the sofa leather on the conveyer belt, and cleaning is convenient.

And a filter bag is also arranged on the second connecting pipe.

The stirring bar is made of stainless steel.

The moving structure comprises a main synchronizing wheel, a slave synchronizing wheel and a synchronous belt, the main synchronizing wheel is horizontally arranged on one side of the first support, the end part of the main synchronizing wheel is connected with a stepping motor III capable of driving the main synchronizing wheel to rotate, the slave synchronizing wheel is horizontally arranged on the other side of the first support, the synchronous belt is sleeved between the main synchronizing wheel and the slave synchronizing wheel, and the moving seat is fixed on the synchronous belt.

When the moving seat needs to move back and forth, the output shaft of the stepping motor III is controlled to drive the main synchronizing wheel to rotate, the main synchronizing wheel drives the synchronous belt to rotate, and the synchronous belt drives the moving seat to move back and forth, so that the moving seat can move back and forth.

The spraying device in the step f comprises a second base, a blocking box is fixed in the middle of the second base through supporting legs, channels are formed in the middle of two ends of the blocking box, a driving roller which is horizontally arranged is arranged at one end of the second base, the end part of the driving roller is connected with a power motor which can drive the driving roller to rotate, a driven roller which is horizontally arranged is arranged at the other end of the second base, an annular conveying belt is arranged between the driving roller and the driven roller, the upper part of the conveying belt penetrates through the channels, the lower part of the conveying belt is located below the blocking box, a spraying mechanism which can spray sofa leather on the conveying belt and a cleaning mechanism which can clean the conveying belt are arranged on the second base, the conveying belt comprises a plurality of strip belts which are arranged in parallel and side by side, and a gap is formed between every; the second cleaning mechanism comprises a second support, a plurality of rotating cylinders, a water tank and a guide roller, the water tank is fixed on the second base, the water tank is located under the blocking box, the guide roller is arranged in the water tank in a rotating mode, the lower portion of the conveying belt is in horizontal arrangement, the guide roller is in contact with the lower portion of the conveying belt, the second support is fixed on the water tank, the rotating cylinders are arranged on the second support in an inclined mode through axial fixing and circumferential rotation, the strip-shaped belt penetrates through the rotating cylinders, the first brush strips are further arranged in the rotating cylinders, the first brush strips are distributed in a spiral shape, and a driving structure capable of driving the rotating cylinders to rotate is further arranged on the second support.

The working principle of the spraying device is as follows: an output shaft of a first power motor is controlled to drive a driving roller to rotate, the driving roller drives a conveyor belt to rotate, the conveyor belt conveys sofa leather into a blocking box, and the sofa leather is sprayed with paint through a spraying mechanism, so that spraying operation of the sofa leather is realized; in the spraying process, the conveying belt passes through the water tank through the guide roller, the rotating cylinder is driven to rotate through the driving structure, the rotating cylinder drives the first brush strips to rotate, and the first brush strips brush off the coating on the strip-shaped belt, so that the spraying quality can be ensured, and the spraying effect is good.

A plurality of water outlet holes are formed in the side part of the rotating cylinder.

Adopt this structure, because it sets up to rotate a section of thick bamboo slope, it is located the basin to rotate a section of thick bamboo lower part, it is located basin upper portion to rotate a section of thick bamboo upper portion, it utilizes the water in the basin to wash away the banding area to rotate a section of thick bamboo lower part, it brushes futilely to rotate a section of thick bamboo upper portion to the banding area, combine to be the brush strip one that the spiral distributes, most rivers in the rotation section of thick bamboo flow downwards, and simultaneously, under the effect of centrifugal force, little water is exported from the apopore, with its brush again when the banding area sanitization, it is reliable to wash.

The driving structure comprises a second power motor, a driving wheel, a plurality of driven wheels and a belt, the second power motor is fixed on the second support, an output shaft of the second power motor is horizontally arranged, the driving wheel is fixed at the end part of the output shaft of the second power motor, the driven wheels are respectively fixed on the rotating cylinders, and the belt is sleeved between the driving wheel and the driven wheels.

When the rotating cylinder needs to be rotated, an output shaft of the power motor II is controlled to drive the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the belt, and the driven wheel drives the rotating cylinder to rotate, so that the rotating cylinder can be rotated.

The spraying mechanism comprises a rotary disc and a storage barrel, the rotary disc is arranged on the upper portion of the separation box, the rotary disc is connected with a power motor III capable of driving the rotary disc to rotate, a plurality of spray heads are evenly arranged on the rotary disc, outlets of the spray heads face downwards, inlets of the spray heads are communicated with the storage barrel through conveying pipes, and conveying pumps II are arranged on the conveying pipes.

When the sofa leather on the conveying belt needs to be sprayed, the second conveying pump is started, the coating in the storage barrel is conveyed to the spray head through the conveying pipe, the output shaft of the third power motor is controlled to drive the rotary table to rotate, the rotary table drives the spray head to rotate, and the spray head sprays the coating onto the sofa leather on the conveying belt.

The barrier box is also provided with an observation port, and a transparent observation plate is arranged at the observation port.

By adopting the structure, the abnormity in the separation box can be conveniently observed through the observation plate, and the observation is convenient.

And a recovery mechanism is also arranged in the separation box.

Retrieve the mechanism including being annular accumulator and mounting bracket, the mounting bracket is fixed in separation case lower part, and the accumulator sets up on the mounting bracket, and the accumulator is located the carousel under, and the accumulator bottom is linked together through communicating pipe and stock bucket, is provided with filter screen two on communicating pipe.

By adopting the structure, the redundant coating sprayed by the spray head can be recycled through the recycling tank, and the coating is conveyed into the storage barrel from the communicating pipe after being filtered by the second filter screen.

The cross-section of accumulator is the U-shaped, and the accumulator includes bottom plate, outer panel and interior plate, and the outer panel lower extreme passes through elastic outer go-between and links to each other with the bottom plate outside, and the outer panel upper end passes through spring two and the mounting bracket links to each other, and the interior plate lower extreme passes through elastic inner connecting ring and links to each other with the bottom plate is inboard, and the interior plate upper end passes through spring three and the mounting bracket links to each other.

Structure more than adopting, because the accumulator adopts movable structure, according to the in-service use demand, outer splayed structure or interior splayed structure can be formed to outer lateral plate and interior curb plate, and outer splayed structure can make it have bigger working area when being used for spraying unnecessary coating to the shower nozzle and retrieving, and interior splayed structure can make on the better bottom plate that drops of coating on outer lateral plate and the interior curb plate when being used for clearing up the accumulator.

The outer side plate comprises a plurality of first plate bodies, and every two adjacent first plate bodies are connected through an elastic connecting strip I; the inner side plate comprises a plurality of second plate bodies, and every two adjacent second plate bodies are connected through an elastic connecting strip.

The second base is provided with a cleaning structure capable of cleaning the recovery tank, the cleaning structure comprises a gear ring, a driving wheel, an annular guide rail, a sliding seat, a mounting bar, a fourth power motor, an outer support swing rod, an inner support swing rod, a second vibration motor, a vibrating block and an upright post, the annular guide rail is fixed on the mounting frame, the annular guide rail is positioned under the bottom plate, the sliding seat is arranged on the annular guide rail, the gear ring is fixed on the mounting frame, the gear ring is positioned on the inner side of the annular guide rail, a fourth power motor is fixed on the sliding seat, an output shaft of the fourth power motor is horizontally arranged, the end part of an output shaft of the fourth power motor is connected with the sliding seat, the driving wheel is fixed on the end part of an output shaft of the fourth power motor, the driving wheel is meshed with the gear ring, the middle part of the mounting bar is fixed on the sliding seat, the lower end of the outer support swing, the lower end of the inner support swing rod is hinged to the sliding seat, the upper end of the inner support swing rod is connected with a second guide wheel, the second guide wheel can be in contact with the inner side plate, the middle of the outer support swing rod is connected with the middle of the inner support swing rod through a fourth spring, the outer support swing rod and the inner support swing rod are in an inverted V shape, a second vibration motor is fixed to the middle of the mounting bar through a fifth spring, a vibration block is fixed to the second vibration motor and can be in contact with the bottom plate, a second upright post is fixed to the mounting bar, a fifth power motor is fixed to the second upright post, an output shaft of the fifth power motor is vertically downward, the end portion of an output shaft of the fifth power motor is connected with the cleaning roller, the cross section of the cleaning roller is in the V shape, the second cleaning roller is further.

When the recovery tank needs to be cleaned, an output shaft of a power motor V is controlled to drive the cleaning roller to rotate, inward acting force is exerted on the upper ends of a pair of outer side plates through a guide wheel, outward acting force is exerted on the upper ends of a pair of inner side plates through the guide wheel, and the outer side plates and the inner side plates form an inner splayed structure; the middle part of the outer support swing rod is connected with the middle part of the inner support swing rod through a spring IV, so that the outer support swing rod and the inner support swing rod can be linked; the output shaft of control power motor four drives the drive wheel and rotates, and the drive wheel meshes with the ring gear mutually gradually and makes the slide remove along ring rail, and the slide drives stand two and removes, and stand two drive the removal roller and remove, and the removal roller is cleared up bottom plate, outer panel and interior plate, and simultaneously, control vibrating motor two and drive the vibrating mass and vibrate from top to bottom, and the vibrating mass makes the bottom plate vibrate from top to bottom to can be with the accumulator clean up, the clearance is effectual.

The mounting bar is further provided with a supporting assembly, the supporting assembly comprises a first air cylinder, a second air cylinder, an outer supporting block and an inner supporting block, the first air cylinder is fixed to one end of the mounting bar, a piston rod of the first air cylinder inclines upwards, the end portion of a piston rod of the first air cylinder is connected with the outer supporting block, the outer supporting block can abut against an outer supporting swing rod, the second air cylinder is fixed to the other end of the mounting bar, the piston rod of the second air cylinder inclines upwards, the piston rod of the first air cylinder is inverted-splayed with the piston rod of the second air cylinder, the end portion of the piston rod of the second air cylinder is connected with the inner supporting block, and the inner supporting block can abut against the inner.

By adopting the structure, when the outer support swing rod and the inner support swing rod do not work, the piston rod of the control cylinder I drives the outer support block to move, the outer support block enables the outer support swing rod to support the column outwards, meanwhile, the piston rod of the control cylinder II drives the inner support block to move, and the inner support block enables the inner support swing rod to support the column inwards.

The drying device in the step b comprises a rack, an oven is fixed on the rack, one end of the oven is an inlet end, the other end of the oven is an outlet end, a transmission belt is arranged on the rack, the transmission belt penetrates through the inlet end and penetrates out of the oven through the outlet end, an electric heating pipe is arranged in the oven, a wringing mechanism is arranged on the oven and comprises a wringing roller, a lifting plate, an installation base frame, a driving cylinder and a vibrating motor, the driving cylinder is fixed on the upper portion of the oven, a piston rod of the driving cylinder vertically faces downwards, the end portion of the piston rod of the driving cylinder penetrates through the top wall of the oven and is connected with the lifting plate, the installation base frame is connected with the lifting plate through a cylindrical spring, the wringing roller is horizontally arranged on the installation base frame, the end portion of the wringing roller is connected with a servo motor capable of driving the wringing roller to rotate, the wringing roller can be, the spiral structure of wool tops is provided with two sets of mirror image settings, and vibrating motor fixes on the installation bed frame.

The working principle of the drying device is as follows: pass through the transmission band with sofa leather and input the oven by the entry end in, the output shaft of control servo motor one drives the wringing roller and rotates, the piston rod that control drove actuating cylinder drives the lifter plate downstream, the lifter plate drives installation bed frame downstream, the installation bed frame drives the wringing roller downstream, make the wringing roller contact with the transmission band, and simultaneously, control vibrating motor drives the vibration from top to bottom of installation bed frame, the installation bed frame drives the wringing roller and vibrates from top to bottom, the wringing roller extrudees the sofa leather on the transmission band, the oven is dried the sofa leather on the transmission band, because the squeezing action of the wringing roller, the required time of drying has been shortened greatly, drying speed is fast.

The oven side part is provided with a taking and placing opening, the oven side part is also fixed with a mounting frame, a box door capable of sealing the taking and placing opening is arranged on the mounting frame, and the box door is connected with a driving structure capable of driving the box door to move up and down.

By adopting the structure, the box door is driven to move up and down through the driving structure, the taking and placing opening can be in an opening or closing state, the box door adopts an opening mode of moving up and down, the traditional opening mode of a side-by-side door is replaced, and the operation is simple and convenient.

The driving structure comprises a guide rod, a guide sleeve, a second servo motor, a gear and a rack, the guide rod is vertically fixed on the mounting frame, the guide sleeve is arranged on the guide rod, the rack is vertically fixed on the mounting frame, the second servo motor is fixed on the guide sleeve, an output shaft of the second servo motor is horizontally arranged, the gear is fixed at the end of the output shaft of the second servo motor, the gear is meshed with the rack, and the box door is fixed on the guide sleeve.

When the box door needs to move up and down, the output shaft of the servo motor II is controlled to drive the gear to rotate, the gear is gradually meshed with the rack to enable the guide sleeve to move up and down along the guide rod, and the guide sleeve drives the box door to move up and down, so that the box door can move up and down.

Still be provided with the protective assembly on the support, the protective assembly includes the weighting piece, connects rope, gyro wheel and backup pad, and the gyro wheel is connected on installing frame upper portion, and the backup pad slope is fixed in the chamber door lower part, connects the rope upper end and walks around gyro wheel and chamber door upper portion and link to each other, connects rope lower extreme and weighting piece and links to each other, and the weighting piece can contact with the backup pad.

When the taking and placing port is in a closed state, the weighting block is supported by the supporting block, and the weighting block does not work; get and put mouthful department when open mode, along with the chamber door rebound gradually, the chamber door is close to the gyro wheel gradually, and the weight landing can avoid the unexpected landing downwards of chamber door through the weight, and the security is high in the backup pad landing.

The weight is made of iron, and a rubber sleeve is arranged outside the weight.

And wind-shielding curtains are arranged at the inlet end and the outlet end of the oven.

By adopting the structure, the heat loss in the oven can be reduced through the windproof curtain.

Compared with the prior art, the manufacturing method of the sofa leather has the advantages that:

the sofa leather can be manufactured by the steps of water squeezing, drying, repairing, leather grinding, roller coating, spraying and the like, the consistency of products can be ensured, and the sofa leather is simple and convenient to manufacture.

Drawings

Fig. 1 is a schematic perspective view of a roll coater.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

FIG. 3 is a schematic perspective view of the roll coating apparatus with portions broken away.

Fig. 4 is a schematic perspective view of the present invention.

Fig. 5 is a schematic perspective view of the invention with portions broken away.

FIG. 6 is a schematic perspective view of the recovery tank of the present invention.

Fig. 7 is a partially enlarged view at B in fig. 6.

Fig. 8 is a cross-sectional view of a cleaning structure of the present invention.

Fig. 9 is a schematic perspective view of the drying apparatus.

Fig. 10 is a partial enlarged view at C in fig. 9.

Fig. 11 is a schematic perspective view of the drying apparatus.

In the figure, 1, a base I; 2. a first bracket; 3. a first connecting pipe; 4. a first stepping motor; 5. a flow regulating valve; 6. a first delivery pump; 7. a push rod motor I; 8. a storage barrel; 9. an overflow trough; 11. a first filter screen; 12. a left limiting sheet; 13. a main synchronizing wheel; 14. a regulating roller; 15. a right limiting sheet; 16. a push rod motor II; 17. a slave synchronizing wheel; 18. a synchronous belt; 19. a coating roller; 21. a first upright post; 22. an air pump; 24. a second stepping motor; 25. a swing lever; 26. a second connecting pipe; 27. an air blowing pipe; 28. a conveyor belt; 29. a step motor III; 31. a first spring; 32. a first vibration motor; 33. stirring strips; 34. a feed pipe; 35. a movable seat; 41. a second base; 42. a conveyor belt; 42a, strip-shaped bands; 43. a driven roller; 44. a barrier box; 45. a water tank; 46. a communicating pipe; 47. a second filter screen; 48. a storage barrel; 49. a second delivery pump; 51. a first power motor; 52. a drive roll; 53. a delivery pipe; 54. a recovery tank; 54a, a bottom plate; 54b, an outer panel; 54b1, plate one; 54b2, connecting strip one; 54c, an inner side plate; 54c1 and a second plate body; 54c2, connecting strip two; 54d, an outer connecting ring; 54e, inner connecting ring; 55. a turntable; 56. a third power motor; 57. a spray head; 58. a guide roller; 59. a belt; 61. a driven wheel; 62. a rotating cylinder; 62a, water outlet holes; 63. a first brush strip; 64. a driving wheel; 65. a second power motor; 66. a second bracket; 67. a mounting frame; 68. a ring gear; 69. a drive wheel; 71. a power motor IV; 72. an annular guide rail; 73. a slide base; 74. a fifth spring; 75. a second vibration motor; 76. vibrating the block; 77. a first cylinder; 78. an outer support block; 79. an outer support swing rod; 81. a first guide wheel; 82. a second upright post; 83. a second spring; 84. a power motor V; 85. cleaning the roller; 86. a second brush strip; 87. a third spring; 88. a second guide wheel; 89. an inner support swing rod; 91. a fourth spring; 92. mounting a bar; 93. an inner support block; 94. a second air cylinder; 101. a frame; 102. an oven; 103. a box door; 104. a conveyor belt; 105. a wind screen; 106. a driving cylinder; 107. a support plate; 108. a weighting block; 109. a gear; 111. a servo motor II; 112. a guide sleeve; 113. a rack; 114. a guide bar; 115. installing a frame; 116. a roller; 117. connecting ropes; 118. wool tops; 119. a water squeezing roller; 121. mounting a base frame; 122. a cylindrical spring; 123. a lifting plate; 124. a vibration motor; 125. and a first servo motor.

Detailed Description

The manufacturing method of the sofa leather comprises the following steps: a. spreading the leather blank on a through type wringing machine for wringing water, and removing 78-96% of water in the leather blank; b. drying the leather blank by a drying device for 1-3h at the drying temperature of 40-60 ℃; c. smearing a repairing agent on the leather blank; d. leather grinding is carried out on the leather blank through a leather grinding machine; e. sizing the leather blank by a roller coating device; f. spraying the coating on the leather blank by a spraying device to obtain leather; g. embossing or printing the leather, and performing embossing roll and pressing plate; h. a milling or softening, a softening machine and a milling drum; i. ironing and pressing the leather at high temperature to obtain finished sofa leather; j. measuring leather, detecting and warehousing; in this embodiment, a blank is flatly laid on a through wringing machine to wring water, and 92% of water in the blank is removed; b. drying the leather blank by a drying device for 2 hours at the drying temperature of 47 ℃; c. smearing a repairing agent on the leather blank; d. leather grinding is carried out on the leather blank through a leather grinding machine; e. sizing the leather blank by a roller coating device; f. spraying the coating on the leather blank by a spraying device to obtain leather; g. embossing the leather; h. breaking down; i. ironing and pressing the leather at high temperature to obtain finished sofa leather; j. measuring leather, detecting and warehousing; the leather blank is cowhide.

The raw material components of the wound repairing agent in the step d are as follows: 70-80 parts of aqueous polyurethane emulsion, 18-30 parts of acrylic emulsion, 9-15 parts of hollow microspheres, 2-6 parts of rheological additive, 0.1-0.3 part of preservative and 60-100 parts of deionized water; in this example, 72 parts of aqueous polyurethane emulsion, 21 parts of acrylic emulsion, 13 parts of hollow microspheres, 3 parts of rheological aid, 0.2 part of preservative and 70 parts of deionized water.

The coating in the step g is prepared from the following raw materials in percentage by weight: 12-14% of acrylic resin, 8-12% of polyurethane, 0.1-0.4% of white carbon black, 0.04-0.09% of phenol, 1-3% of flame retardant, 0.02-0.05% of sodium benzoate and the balance of water; in this embodiment, the coating in step g is prepared from the following raw materials in percentage by weight: 13% of acrylic resin, 9% of polyurethane, 0.2% of white carbon black, 0.06% of phenol, 2% of flame retardant, 0.04% of sodium benzoate and 75.7% of water.

The spraying thickness in the step g is 0.1-0.4 mm; in this example, the thickness of the spray coating in step g is 0.2 mm; the ironing temperature in the step j is 110-120 ℃; in the present embodiment, the ironing temperature in step j is 112 ℃.

As shown in fig. 1 to fig. 3, the roll coating device in step e includes a first base 1, a first bracket 2 is fixed on the first base 1, and in this embodiment, the first bracket 2 is fixed on the first base 1 by a bolt connection; the first support 2 is provided with a conveying belt 28 for conveying sofa leather, one end of the conveying belt 28 is an input end, the other end of the conveying belt 28 is an output end, the first support 2 is further provided with a cleaning mechanism I for cleaning the sofa leather and a roller coating mechanism for roller coating the sofa leather, the roller coating mechanism comprises a coating roller 19, an adjusting roller 14, a left limiting piece 12, a right limiting piece 15, a storage tank 8, a moving seat 35, a feeding pipe 34, a stirring bar 33 and a vibration motor I32, and the stirring bar 33 is made of stainless steel; the coating roller 19 and the adjusting roller 14 are both horizontally arranged on the first bracket 2 in an axial fixed and circumferential rotating mode, the coating roller 19 is positioned right above the output end of the conveying belt 28, a gap for sofa leather to pass through is formed between the coating roller 19 and the conveying belt 28, the end part of the coating roller 19 is also connected with a first stepping motor 4 capable of driving the coating roller to rotate, the left limiting piece 12 is arranged on one side of the first bracket 2, the left limiting piece 12 is connected with a first push rod motor 7 capable of driving the left limiting piece to move back and forth, in the embodiment, the first push rod motor 7 is fixed on one side of the first bracket 2, and the end part of a push rod of the first push rod motor 7 is connected with the left limiting piece 12; the left limiting piece 12 is respectively contacted with the coating roller 19 and the adjusting roller 14, the right limiting piece 15 is arranged at the other side of the first bracket 2, the right limiting piece 15 is connected with a second push rod motor 16 capable of driving the first bracket 2 to move back and forth, in the embodiment, the second push rod motor 16 is fixed at the other side of the first bracket 2, and the push rod end part of the second push rod motor 16 is connected with the right limiting piece 15; the right limiting piece 15 is respectively contacted with the coating roller 19 and the adjusting roller 14, a temporary storage part for temporarily storing the slurry is formed among the left limiting piece 12, the right limiting piece 15, the coating roller 19 and the adjusting roller 14, a moving seat 35 is arranged on a first support 2, the moving seat 35 is connected with a moving structure capable of driving the moving seat to move back and forth, a feeding pipe 34 is obliquely arranged on the moving seat 35, the upper end of the feeding pipe 34 is communicated with the side part of the storage barrel 8 through a first connecting pipe 3, a first conveying pump 6 is arranged on the first connecting pipe 3, the lower end of the feeding pipe 34 is a discharge port facing the temporary storage part, the upper end of the stirring strip 33 is hinged on the moving seat 35, the middle part of the stirring strip 33 is connected with the moving seat 35 through a first spring 31, the lower end of the stirring strip 33 is positioned in the temporary storage part, a plurality of first V-shaped guide holes and a second inverted V-shaped guide holes are further formed in the lower end of the stirring, the number of the second diversion holes is ten; the first vibration motor 32 is fixed in the middle of the stirring bar 33, and in the embodiment, the first vibration motor 32 is fixed in the middle of the stirring bar 33 in a bolt connection mode; the first connecting pipe 3 is also provided with a flow regulating valve 5.

The height of the left limiting piece 12 is lower than that of the right limiting piece 15; the bracket I2 is also provided with an overflow structure, the overflow structure comprises an overflow groove 9 and a filter screen I11, the upper end of the overflow groove 9 is connected with the side part of the left limiting sheet 12, the lower end of the overflow groove 9 is communicated with the upper part of the storage barrel 8, and the filter screen I11 is arranged in the middle of the overflow groove 9.

The first cleaning mechanism comprises a first upright post 21, a swing rod 25, an air blowing pipe 27, a second stepping motor 24 and an air pump 22, wherein the first upright post 21 is fixed on the first bracket 2, and in the embodiment, the first upright post 21 is fixed on the first bracket 2 in a welding mode; a second stepping motor 24 is fixed on the first upright post 21, an output shaft of the second stepping motor 24 is horizontally arranged, the upper end of a swing rod 25 is connected with the end part of the output shaft of the second stepping motor 24, the lower end of the swing rod 25 is a free end, an air blowing pipe 27 is fixed on the free end, and the air blowing pipe 27 is communicated with an air pump 22 through a second connecting pipe 26; the second connecting pipe 26 is also provided with a filter bag.

The moving structure comprises a main synchronizing wheel 13, a slave synchronizing wheel 17 and a synchronous belt 18, wherein the main synchronizing wheel 13 is horizontally arranged on one side of a first support 2, the end part of the main synchronizing wheel 13 is connected with a third stepping motor 29 capable of driving the main synchronizing wheel to rotate, the slave synchronizing wheel 17 is horizontally arranged on the other side of the first support 2, the synchronous belt 18 is sleeved between the main synchronizing wheel 13 and the slave synchronizing wheel 17, a moving seat 35 is fixed on the synchronous belt 18, and in the embodiment, the moving seat 35 is fixed on the synchronous belt 18 in a bolt connection mode.

The working principle of the roller coating device is as follows: a push rod of a first push rod motor 7 is controlled to drive a left limiting piece 12 to move back and forth, the left limiting piece 12 is adjusted to a required position, a push rod of a second push rod motor 16 is controlled to drive a right limiting piece 15 to move back and forth, and the right limiting piece 15 is adjusted to a required position; controlling an output shaft of the first stepping motor 4 to drive the coating roller 19 to vibrate; the air pump 22 is started, outside air is conveyed into the air blowing pipe 27 through the second connecting pipe 26, meanwhile, the output shaft of the second stepping motor 24 is controlled to drive the swing rod 25 to swing back and forth, the swing rod 25 drives the air blowing pipe 27 to swing back and forth, and the air blowing pipe 27 cleans sofa leather on the conveying belt 28; the first conveying pump 6 is started, slurry in the storage bucket 8 is conveyed to the position of the feeding pipe 34 through the first connecting pipe 3, the slurry is output to the temporary storage portion through the feeding pipe 34, the output shaft of the third stepping motor 29 is controlled to drive the main synchronous wheel 13 to rotate, the main synchronous wheel 13 drives the synchronous belt 18 to rotate, the synchronous belt 18 drives the movable seat 35 to move back and forth, the movable seat 35 drives the feeding pipe 34 and the stirring strip 33 to move back and forth, meanwhile, the first vibrating motor 32 is controlled to drive the stirring strip 33 to vibrate up and down, the stirring strip 33 uniformly stirs the slurry in the temporary storage portion, the coating roller 19 coats the slurry on the sofa leather, and the quality of the sofa leather roller coating can be guaranteed.

As shown in fig. 4 to 8, the spraying device in step f includes a second base 41, a separation box 44 is fixed in the middle of the second base 41 through a support foot, a channel is formed in the middle of two ends of the separation box 44, a driving roller 52 horizontally arranged is arranged at one end of the second base 41, the end of the driving roller 52 is connected with a first power motor 51 capable of driving the driving roller to rotate, in this embodiment, the first power motor 51 is fixed on the second base 41, the output shaft of the first power motor 51 is horizontally arranged, and the end of the output shaft of the first power motor 51 is connected with the end of the driving roller 52; a driven roller 43 which is horizontally arranged is arranged at the other end of the second base 41, an annular conveying belt 42 is arranged between the driving roller 52 and the driven roller 43, the upper part of the conveying belt 42 passes through a channel, the lower part of the conveying belt 42 is positioned below the baffle box 44, a spraying mechanism capable of spraying sofa leather on the conveying belt 42 and a cleaning mechanism II capable of cleaning the conveying belt 42 are arranged on the second base 41, the conveying belt 42 comprises a plurality of strip-shaped belts 42a which are arranged in parallel and side by side, and in the embodiment, the number of the strip-shaped belts 42a is eight; a gap is formed between every two adjacent strip-shaped belts 42 a; the second cleaning mechanism comprises a second bracket 66, a plurality of rotary cylinders 62, a water tank 45 and guide rollers 58, wherein in the embodiment, the number of the rotary cylinders 62 is eight; the water tank 45 is fixed on the second base 41, and in the embodiment, the water tank 45 is fixed on the second base 41 by welding; the water tank 45 is positioned right below the baffle box 44, the guide roller 58 is rotatably arranged in the water tank 45, the guide roller 58 is horizontally arranged, the lower part of the conveyor belt 42 is in contact with the guide roller 58, the second bracket 66 is fixed on the water tank 45, and in the embodiment, the second bracket 66 is fixed on the water tank 45 in a welding mode; the rotating cylinder 62 is obliquely arranged on the second support 66 in an axially fixed and circumferentially rotating manner, the strip-shaped belt 42a penetrates through the rotating cylinder 62, the first brush strip 63 is further arranged in the rotating cylinder 62, the first brush strip 63 is spirally distributed, and the second support 66 is further provided with a driving structure capable of driving the rotating cylinder 62 to rotate; a plurality of water outlet holes 62a are further formed in the side portion of the rotary cylinder 62, and in this embodiment, the number of the water outlet holes 62a is thirty.

The driving structure comprises a second power motor 65, a driving wheel 64, a plurality of driven wheels 61 and a belt 59, wherein in the embodiment, the number of the driven wheels 61 is eight; the second power motor 65 is fixed on the second bracket 66, and in the embodiment, the second power motor 65 is fixed on the second bracket 66 in a bolt connection manner; an output shaft of the second power motor 65 is horizontally arranged, the driving wheel 64 is fixed at the end part of the output shaft of the second power motor 65, the driven wheels 61 are respectively fixed on the rotating cylinders 62, and the belt 59 is sleeved between the driving wheel 64 and the driven wheels 61.

In the spraying process, the conveyor belt 42 passes through the water tank 45 through the guide roller 58, an output shaft of a power motor II 65 is controlled to drive a driving wheel 64 to rotate, the driving wheel 64 drives a driven wheel 61 to rotate through a belt 59, the driven wheel 61 drives a rotating cylinder 62 to rotate, the rotating cylinder 62 drives a brush strip I63 to rotate, and the brush strip I63 brushes off the coating on the strip belt 42 a; because the rotating cylinder 62 is obliquely arranged, the lower part of the rotating cylinder 62 is positioned in the water tank 45, the upper part of the rotating cylinder 62 is positioned at the upper part of the water tank 45, the strip-shaped belt 42a is washed by the water in the water tank 45 at the lower part of the rotating cylinder 62, the strip-shaped belt 42a is brushed at the upper part of the rotating cylinder 62, and by combining the spirally-distributed brush strips I63, most of the water in the rotating cylinder 62 flows downwards, and meanwhile, under the action of centrifugal force, less water is output from the water outlet hole 62a, so that the strip-shaped belt 42a is brushed at the same time of being cleaned, and the cleaning is reliable.

The spraying mechanism comprises a rotary disc 55 and a storage barrel 48, the rotary disc 55 is arranged at the upper part of the separation box 44, the rotary disc 55 is connected with a power motor III 56 which can drive the rotary disc 55 to rotate, in the embodiment, the power motor III 56 is fixed at the upper part of the separation box 44, the output shaft of the power motor III 56 is vertically downward, and the end part of the output shaft of the power motor III 56 is connected with the rotary disc 55; a plurality of spray heads 57 are uniformly arranged on the turntable 55, and in the embodiment, the number of the spray heads 57 is six; the outlet of the spray nozzle 57 faces downwards, the inlet of the spray nozzle 57 is communicated with the storage bucket 48 through the conveying pipe 53, and the conveying pipe 53 is provided with a second conveying pump 49.

The baffle box 44 is also provided with an observation port, and a transparent observation plate is arranged at the observation port.

The separation box 44 is also internally provided with a recovery mechanism, the recovery mechanism comprises an annular recovery groove 54 and a mounting frame 67, the mounting frame 67 is fixed at the lower part of the separation box 44, and in the embodiment, the mounting frame 67 is fixed at the lower part of the separation box 44 in a bolt connection manner; the recovery tank 54 is arranged on the mounting frame 67, the recovery tank 54 is positioned right below the turntable 55, the bottom of the recovery tank 54 is communicated with the storage barrel 48 through a communicating pipe 46, and the communicating pipe 46 is provided with a second filter screen 47.

The recovery groove 54 has a U-shaped cross-section, the recovery groove 54 includes a bottom plate 54a, an outer plate 54b and an inner plate 54c, the lower end of the outer plate 54b is connected to the outside of the bottom plate 54a through an elastic outer connecting ring 54d, the upper end of the outer plate 54b is connected to the mounting bracket 67 through a second spring 83, the lower end of the inner plate 54c is connected to the inside of the bottom plate 54a through an elastic inner connecting ring 54e, and the upper end of the inner plate 54c is connected to the mounting bracket 67 through a third spring 87.

The outer side plate 54b comprises a plurality of plate bodies 54b1, two adjacent plate bodies 54b1 are connected through an elastic connecting strip 54b2, and in the embodiment, the number of the plate bodies 54b1 is twenty; the inner side plate 54c comprises a plurality of second plate bodies 54c1, and in the embodiment, the number of the second plate bodies 54c1 is twenty; two adjacent plate bodies 54c1 are connected by an elastic connecting strip 54c 2.

A cleaning structure capable of cleaning the recovery tank 54 is arranged on the second base 41, the cleaning structure comprises a gear ring 68, a driving wheel 69, an annular guide rail 72, a sliding seat 73, a mounting bar 92, a fourth power motor 71, an outer support swing rod 79, an inner support swing rod 89, a second vibration motor 75, a vibration block 76 and a second upright post 82, the annular guide rail 72 is fixed on the mounting frame 67, and in the embodiment, the annular guide rail 72 is fixed on the mounting frame 67 in a bolt connection mode; the annular guide rail 72 is positioned right below the bottom plate 54a, the slide carriage 73 is arranged on the annular guide rail 72, and the ring gear 68 is fixed on the mounting frame 67, in the embodiment, the ring gear 68 is fixed on the mounting frame 67 in a bolt connection manner; the gear ring 68 is positioned on the inner side of the annular guide rail 72, the power motor four 71 is fixed on the sliding seat 73, and in the embodiment, the power motor four 71 is fixed on the sliding seat 73 in a bolt connection mode; an output shaft of the power motor IV 71 is horizontally arranged, the end part of the output shaft of the power motor IV 71 is connected with the sliding seat 73, the driving wheel 69 is fixed at the end part of the output shaft of the power motor IV 71, the driving wheel 69 is meshed with the gear ring 68, the middle part of the mounting bar 92 is fixed on the sliding seat 73, and in the embodiment, the middle part of the mounting bar 92 is fixed on the sliding seat 73 in a bolt connection mode; the lower end of an outer supporting swing rod 79 is hinged with one end of a mounting bar 92, the upper end of the outer supporting swing rod 79 is connected with a first guide wheel 81, the first guide wheel 81 can be in contact with an outer side plate 54b, the lower end of an inner supporting swing rod 89 is hinged with a sliding seat 73, the upper end of the inner supporting swing rod 89 is connected with a second guide wheel 88, the second guide wheel 88 can be in contact with an inner side plate 54c, the middle part of the outer supporting swing rod 79 is connected with the middle part of the inner supporting swing rod 89 through a fourth spring 91, the outer supporting swing rod 79 and the inner supporting swing rod 89 are inverted-splayed, a second vibrating motor 75 is fixed to the middle part of the mounting bar 92 through a fifth spring 74, and a vibrating block 76 is fixed to the second vibrating motor 75; the vibrating block 76 can contact with the bottom plate 54a, the second column 82 is fixed on the mounting strip 92, and in the embodiment, the second column 82 is fixed on the mounting strip 92 in a welding manner; a power motor five 84 is fixed on the second upright post 82, and in the embodiment, the power motor five 84 is fixed on the second upright post 82 in a bolt connection manner; the output shaft of the power motor five 84 is vertically downward, the end part of the output shaft of the power motor five 84 is connected with the cleaning roller 85, the section of the cleaning roller 85 is splayed, a second brush strip 86 is further arranged on the cleaning roller 85, and the second brush strip 86 is spirally distributed.

Because the recycling tank 54 is of a movable structure, the outer side plate 54b and the inner side plate 54c can form an outer splayed structure or an inner splayed structure according to actual use requirements, the outer splayed structure can have a larger working area when being used for spraying redundant paint to the spray head 57 for recycling, and the inner splayed structure can enable the paint on the outer side plate 54b and the inner side plate 54c to better fall onto the bottom plate 54a when being used for cleaning the recycling tank 54; an output shaft of a power motor five 84 is controlled to drive a cleaning roller 85 to rotate, an inward acting force is applied to the upper end of the outer side plate 54b through a guide wheel one 81, an outward acting force is applied to the upper end of the inner side plate 54c through a guide wheel two 88, and the outer side plate 54b and the inner side plate 54c form an inner splayed structure; the middle part of the outer support swing rod 79 is connected with the middle part of the inner support swing rod 89 through a spring IV 91, so that the outer support swing rod 79 and the inner support swing rod 89 can be linked; an output shaft of the fourth control power motor 71 drives the driving wheel 69 to rotate, the driving wheel 69 is gradually meshed with the gear ring 68 to enable the sliding seat 73 to move along the annular guide rail 72, the sliding seat 73 drives the second upright post 82 to move, the second upright post 82 drives the cleaning roller 85 to move, the cleaning roller 85 cleans the bottom plate 54a, the outer side plate 54b and the inner side plate 54c, meanwhile, the second control vibration motor 75 drives the vibration block 76 to vibrate up and down, and the vibration block 76 enables the bottom plate 54a to vibrate up and down, so that the recovery tank 54 can be cleaned up, and the cleaning effect is good.

The mounting bar 92 is further provided with a support assembly, the support assembly comprises a first air cylinder 77, a second air cylinder 94, an outer support block 78 and an inner support block 93, the first air cylinder 77 is fixed on one end of the mounting bar 92, and in the embodiment, the first air cylinder 77 is fixed on one end of the mounting bar 92 in a bolt connection mode; the piston rod of the first cylinder 77 inclines upwards, the end part of the piston rod of the first cylinder 77 is connected with the outer support block 78, the outer support block 78 can be abutted against the outer support swing rod 79, and the second cylinder 94 is fixed at the other end of the mounting bar 92, in the embodiment, the second cylinder 94 is fixed at the other end of the mounting bar 92 in a bolt connection mode; the piston rod of the second cylinder 94 inclines upwards, the piston rod of the first cylinder 77 and the piston rod of the second cylinder 94 are in an inverted splayed shape, the end part of the piston rod of the second cylinder 94 is connected with the inner support block 93, and the inner support block 93 can abut against the inner support swing rod 89; by adopting the structure, when the outer supporting swing rod 79 and the inner supporting swing rod 89 do not work, the piston rod of the control cylinder I77 drives the outer supporting block 78 to move, the outer supporting block 78 supports the outer supporting swing rod 79 outwards, meanwhile, the piston rod of the control cylinder II 94 drives the inner supporting block 93 to move, and the inner supporting block 93 supports the inner supporting swing rod 89 inwards.

The working principle of the spraying device is as follows: an output shaft of a first control power motor 51 drives a driving roller 52 to rotate, the driving roller 52 drives a conveyor belt 42 to rotate, the conveyor belt 42 conveys sofa leather into a blocking box 44, a second delivery pump 49 is started, paint in a storage barrel 48 is conveyed to a spray head 57 through a conveying pipe 53, an output shaft of a third control power motor 56 drives a rotary disc 55 to rotate, the rotary disc 55 drives the spray head 57 to rotate, the spray head 57 sprays the paint on the sofa leather on the conveyor belt 42, the spray head 57 can spray redundant paint to be recycled through a recycling groove 54, the residual paint is conveyed into the storage barrel 48 through a communicating pipe 46 after being filtered by a second filter screen 47, and accordingly spraying operation is achieved.

As shown in fig. 9-11, the drying device in step b includes a frame 101, an oven 102 is fixed on the frame 101, and in this embodiment, the oven 102 is fixed on the frame 101 by welding; one end of the oven 102 is an inlet end, the other end of the oven 102 is an outlet end, a conveyor belt 104 is arranged on the rack 101, the conveyor belt 104 penetrates through the inlet end and penetrates out of the outlet end, an electric heating pipe is arranged in the oven 102, a water squeezing mechanism is arranged on the oven 102, the water squeezing mechanism comprises a water squeezing roller 119, a lifting plate 123, an installation base frame 121, a driving cylinder 106 and a vibrating motor 124, the driving cylinder 106 is fixed on the upper portion of the oven 102, and in the embodiment, the driving cylinder 106 is fixed on the upper portion of the oven 102 in a bolt connection mode; the piston rod of the driving cylinder 106 is vertically downward, the end part of the piston rod of the driving cylinder 106 passes through the top wall of the oven 102 and is connected with the lifting plate 123, in this embodiment, the end part of the piston rod of the driving cylinder 106 is connected with the lifting plate 123 in a bolt connection manner; the installation base frame 121 is connected with the lifting plate 123 through a cylindrical spring 122, the water squeezing roller 119 is horizontally arranged on the installation base frame 121, the end part of the water squeezing roller 119 is connected with a servo motor I125 capable of driving the water squeezing roller to rotate, the water squeezing roller 119 can be in contact with the transmission belt 104, wool tops 118 are arranged on the water squeezing roller 119, the wool tops 118 form a spiral structure, the length center of the water squeezing roller 119 is taken as a reference, the spiral structure of the wool tops 118 is provided with two groups in mirror image arrangement, and sofa leather of the transmission belt 104 can be unfolded through the wool tops 118; the vibration motor 124 is fixed on the mounting base frame 121, and in this embodiment, the vibration motor 124 is fixed on the mounting base frame 121 by means of bolts.

A taking and placing opening is formed in the side of the oven 102, a mounting frame 115 is further fixed on the side of the oven 102, and in the embodiment, the mounting frame 115 is fixed on the side of the oven 102 in a bolt connection mode; the mounting frame 115 is provided with a box door 103 capable of sealing the taking and placing opening, and the box door 103 is connected with a driving structure capable of driving the box door to move up and down; by adopting the structure, the output shaft of the servo motor II 111 is controlled to drive the gear 109 to rotate, the gear 109 is gradually meshed with the rack 113 to enable the guide sleeve 112 to move up and down along the guide rod 114, the guide sleeve 112 drives the box door 103 to move up and down, the pick-and-place opening can be in an opening or closing state, and the box door 103 adopts an opening mode of moving up and down to replace the traditional opening mode of a side-by-side door.

The driving structure comprises a guide rod 114, a guide sleeve 112, a second servo motor 111, a gear 109 and a rack 113, wherein the guide rod 114 is vertically fixed on the mounting frame 115, and in the embodiment, the guide rod 114 is fixed on the mounting frame 115 in a bolt connection manner; the guide sleeve 112 is arranged on the guide rod 114, the rack 113 is vertically fixed on the mounting frame 115, and in the embodiment, the rack 113 is fixed on the mounting frame 115 through a bolt connection mode; the second servo motor 111 is fixed on the guide sleeve 112, and in the embodiment, the second servo motor 111 is fixed on the guide sleeve 112 in a bolt connection manner; an output shaft of the second servo motor 111 is horizontally arranged, the gear 109 is fixed at the end of the output shaft of the second servo motor 111, the gear 109 is meshed with the rack 113, and the box door 103 is fixed on the guide sleeve 112.

The bracket is also provided with a protection assembly, the protection assembly comprises a weight 108, a connecting rope 117, a roller 116 and a supporting plate 107, the roller 116 is connected to the upper part of the mounting frame 115, the supporting plate 107 is obliquely fixed to the lower part of the box door 103, the upper end of the connecting rope 117 bypasses the roller 116 to be connected with the upper part of the box door 103, the lower end of the connecting rope 117 is connected with the weight 108, and the weight 108 can be contacted with the supporting plate 107; when the pick-and-place port is in a closed state, the weighting block 108 is supported by the supporting block, and the weighting block 108 does not work; when the pick-and-place port is in an open state, as the box door 103 gradually moves upwards, the box door 103 gradually approaches the roller 116, the weight 108 slides off the supporting plate 107, the box door 103 can be prevented from accidentally sliding downwards through the weight 108, and the safety is high; the weight 108 is made of iron, and a rubber sleeve is arranged outside the weight 108.

Windshields 105 are provided at both the inlet and outlet ends of oven 102.

The working principle of the drying device is as follows: sofa leather is input into the oven 102 from an inlet end through a conveying belt 104, and an output shaft of a first servo motor 125 is controlled to drive a wringing roller 119 to rotate; the piston rod that the control drove actuating cylinder 106 drives lifter plate 123 and moves down, lifter plate 123 drives installation bed frame 121 and moves down, installation bed frame 121 drives wringing roller 119 and moves down, make wringing roller 119 contact with transmission band 104, and simultaneously, control vibrating motor 124 drives installation bed frame 121 and vibrates from top to bottom, installation bed frame 121 drives wringing roller 119 and vibrates from top to bottom, wringing roller extrudes the sofa leather on transmission band 104, oven 102 is dried the sofa leather on transmission band 104.

Claims (10)

1. The manufacturing method of the sofa leather is characterized by comprising the following steps: a. spreading the leather blank on a through type wringing machine for wringing water, and removing 78-96% of water in the leather blank; b. drying the leather blank by a drying device for 1-3h at the drying temperature of 40-60 ℃; c. smearing a repairing agent on the leather blank; d. leather grinding is carried out on the leather blank through a leather grinding machine; e. sizing the leather blank by a roller coating device; f. spraying the coating on the leather blank by a spraying device to obtain leather; g. embossing or printing the leather, and performing embossing roll and pressing plate; h. a milling or softening, a softening machine and a milling drum; i. ironing and pressing the leather at high temperature to obtain finished sofa leather; j. measuring leather, detecting and warehousing; the spraying device in the step f comprises a second base, a blocking box is fixed in the middle of the second base through supporting legs, channels are formed in the middle of two ends of the blocking box, a driving roller which is horizontally arranged is arranged at one end of the second base, the end part of the driving roller is connected with a power motor which can drive the driving roller to rotate, a driven roller which is horizontally arranged is arranged at the other end of the second base, an annular conveying belt is arranged between the driving roller and the driven roller, the upper part of the conveying belt penetrates through the channels, the lower part of the conveying belt is located below the blocking box, a spraying mechanism which can spray sofa leather on the conveying belt and a cleaning mechanism which can clean the conveying belt are arranged on the second base, the conveying belt comprises a plurality of strip belts which are arranged in parallel and side by side, and a gap is formed between every; the second cleaning mechanism comprises a second support, a plurality of rotating cylinders, a water tank and a guide roller, the water tank is fixed on the second base, the water tank is located under the blocking box, the guide roller is rotatably arranged in the water tank, the guide roller is horizontally arranged, the lower portion of the conveying belt is in contact with the guide roller, the second support is fixed on the water tank, the rotating cylinders are obliquely arranged on the second support in an axially fixed and circumferentially rotating mode, the strip-shaped belt penetrates through the rotating cylinders, the first brush strips are further arranged in the rotating cylinders and are spirally distributed, and a driving structure capable of driving the rotating cylinders to rotate is further arranged on the second support; the driving structure comprises a second power motor, a driving wheel, a plurality of driven wheels and a belt, the second power motor is fixed on the second support, an output shaft of the second power motor is horizontally arranged, the driving wheel is fixed at the end part of the output shaft of the second power motor, the driven wheels are respectively fixed on the rotating cylinders, and the belt is sleeved between the driving wheel and the driven wheels; the spraying mechanism comprises a rotary disc and a storage barrel, the rotary disc is arranged at the upper part of the separation box, the rotary disc is connected with a power motor III capable of driving the rotary disc to rotate, a plurality of spray heads are uniformly arranged on the rotary disc, outlets of the spray heads face downwards, inlets of the spray heads are communicated with the storage barrel through conveying pipes, and conveying pumps II are arranged on the conveying pipes; a recovery mechanism is also arranged in the separation box; the recycling mechanism comprises an annular recycling groove and an installation frame, the installation frame is fixed to the lower portion of the separation box, the recycling groove is arranged on the installation frame and located right below the rotary table, the bottom of the recycling groove is communicated with the material storage barrel through a communicating pipe, and a second filter screen is arranged on the communicating pipe; the section of the recovery tank is U-shaped, the recovery tank comprises a bottom plate, an outer side plate and an inner side plate, the lower end of the outer side plate is connected with the outer side of the bottom plate through an elastic outer connecting ring, the upper end of the outer side plate is connected with the mounting frame through a second spring, the lower end of the inner side plate is connected with the inner side of the bottom plate through an elastic inner connecting ring, and the upper end of the inner side plate is connected with the mounting frame through a third spring; the outer side plate comprises a plurality of first plate bodies, and every two adjacent first plate bodies are connected through an elastic connecting strip I; the inner side plate comprises a plurality of second plate bodies, and every two adjacent second plate bodies are connected through an elastic connecting strip; the second base is provided with a cleaning structure capable of cleaning the recovery tank, the cleaning structure comprises a gear ring, a driving wheel, an annular guide rail, a sliding seat, a mounting bar, a fourth power motor, an outer support swing rod, an inner support swing rod, a second vibration motor, a vibrating block and an upright post, the annular guide rail is fixed on the mounting frame, the annular guide rail is positioned under the bottom plate, the sliding seat is arranged on the annular guide rail, the gear ring is fixed on the mounting frame, the gear ring is positioned on the inner side of the annular guide rail, a fourth power motor is fixed on the sliding seat, an output shaft of the fourth power motor is horizontally arranged, the end part of an output shaft of the fourth power motor is connected with the sliding seat, the driving wheel is fixed on the end part of an output shaft of the fourth power motor, the driving wheel is meshed with the gear ring, the middle part of the mounting bar is fixed on the sliding seat, the lower end of the outer support swing, the lower end of the inner support swing rod is hinged to the sliding seat, the upper end of the inner support swing rod is connected with a second guide wheel, the second guide wheel can be in contact with the inner side plate, the middle of the outer support swing rod is connected with the middle of the inner support swing rod through a fourth spring, the outer support swing rod and the inner support swing rod are in an inverted V shape, a second vibration motor is fixed to the middle of the mounting bar through a fifth spring, a vibration block is fixed to the second vibration motor and can be in contact with the bottom plate, a second upright post is fixed to the mounting bar, a fifth power motor is fixed to the second upright post, an output shaft of the fifth power motor is vertically downward, the end portion of an output shaft of the fifth power motor is connected with the cleaning roller, the cross section of the cleaning roller is in the V shape, the second cleaning roller is further.

2. The method of claim 1, wherein the leather substrate is cowhide.

3. The method for manufacturing sofa leather according to claim 1, wherein the raw material components of the mending agent in the step d are as follows: 70-80 parts of aqueous polyurethane emulsion, 18-30 parts of acrylic emulsion, 9-15 parts of hollow microspheres, 2-6 parts of rheological additive, 0.1-0.3 part of preservative and 60-100 parts of deionized water.

4. The method for making sofa leather according to claim 1, wherein the thickness of the spraying in the step g is 0.1-0.4 mm.

5. The method for manufacturing sofa leather according to claim 1, wherein the ironing temperature in step j is 110-120 ℃.

6. The method for manufacturing sofa leather according to claim 1, wherein the drying device in the step b comprises a frame, an oven is fixed on the frame, one end of the oven is an inlet end, the other end of the oven is an outlet end, a conveyor belt is arranged on the frame, the conveyor belt penetrates through the inlet end and penetrates out from the outlet end, an electric heating pipe is arranged in the oven, a wringing mechanism is arranged on the oven, the wringing mechanism comprises a wringing roller, a lifting plate, a mounting base frame, a driving cylinder and a vibrating motor, the driving cylinder is fixed on the upper portion of the oven, a piston rod of the driving cylinder vertically faces downwards, the end portion of the piston rod of the driving cylinder penetrates through the top wall of the oven and is connected with the lifting plate, the mounting base frame is connected with the lifting plate through a cylindrical spring, the wringing roller is horizontally arranged on the mounting base frame, the end portion of the wringing roller is, the water squeezing roller is provided with wool tops which form a spiral structure, the length center of the water squeezing roller is used as a reference, the spiral structure of the wool tops is provided with two sets of mirror images, and the vibration motor is fixed on the installation base frame.

7. The method for manufacturing sofa leather according to claim 6, wherein the oven side part is provided with a taking and placing opening, the oven side part is further fixed with a mounting frame, a door capable of sealing the taking and placing opening is arranged on the mounting frame, and the door is connected with a driving structure capable of driving the door to move up and down.

8. The sofa leather manufacturing method according to claim 7, wherein the driving structure comprises a guide rod, a guide sleeve, a second servo motor, a gear and a rack, the guide rod is vertically fixed on the mounting frame, the guide sleeve is arranged on the guide rod, the rack is vertically fixed on the mounting frame, the second servo motor is fixed on the guide sleeve, an output shaft of the second servo motor is horizontally arranged, the gear is fixed at the end part of the output shaft of the second servo motor, the gear is meshed with the rack, and the box door is fixed on the guide sleeve.

9. The method for manufacturing sofa leather according to claim 8, wherein the support is further provided with a protection component, the protection component comprises a weight block, a connecting rope, a roller and a support plate, the roller is connected to the upper part of the mounting frame, the support plate is obliquely fixed to the lower part of the box door, the upper end of the connecting rope is connected to the upper part of the box door by bypassing the roller, the lower end of the connecting rope is connected to the weight block, and the weight block can be in contact with the support plate.

10. The method for making sofa leather according to claim 6, wherein wind-shielding curtains are arranged at the inlet end and the outlet end of the oven.

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