CN112537086A

CN112537086A - Process for regenerating plastic woven bag by using waste plastic

Info

Publication number: CN112537086A
Application number: CN202011322400.6A
Authority: CN
Inventors: 王耀明; 李芳�; 刘娟
Original assignee: Jieshou Juyi Packaging Material Co ltd
Current assignee: Jieshou Juyi Packaging Material Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-23

Abstract

A process for regenerating plastic woven bags by using waste plastics includes such steps as putting waste plastics in ultrasonic environment, pre-cleaning the mud on the surface of waste plastics by ultrasonic waves, shearing after cleaning, adding the shearing material to the cleaning liquid containing hydrochloric acid and acetic acid, diluting the acetic acid and hydrochloric acid in the cleaning liquid, reacting with the mud on the surface of waste plastics, corroding calcium carbonate in the mud, cleaning the surface of waste plastics, reducing the mud content mixed in the waste plastics when plastic woven bags are produced, and improving the quality of plastic woven bags.

Description

Process for regenerating plastic woven bag by using waste plastic

Technical Field

The invention relates to the technical field of plastic woven bag production, in particular to a process for regenerating a plastic woven bag by using waste plastics.

Background

The plastic woven bag is also called as a snakeskin bag. Is one kind of plastic bag for packing and is produced with PP, PE and other plastic material. Every year, 60 hundred million woven bags are used for packaging cement in China, and account for more than 85% of bulk cement packages. Besides being used for cement packaging, plastic woven packaging bags are widely used for industrial and agricultural product packaging, aquatic product packaging, poultry feed packaging and the like; therefore, the market demand of plastic woven bags is still very large, and as the mass production of plastic packaging bag products can cause a large amount of plastic, the raw material resources and the price become problems gradually, not only can the production cost of the plastic packaging bags be improved, but also the environmental impact is increasingly increased. With the importance of society on the environment, the recycling of waste plastics (PP and PE) gradually enters the career of people, the waste plastics are utilized in the production technology of plastic woven bags, the raw material cost can be greatly reduced, the recycling of the waste plastics can be realized, and the environmental pollution is reduced.

The existing process of utilizing waste plastics to produce plastic woven bags is inconvenient to clean soil adhered to the surfaces of the waste plastics, and the soil is mixed into raw materials to influence the quality of the plastic woven bags when the plastic woven bags are produced.

Disclosure of Invention

The invention aims to solve the problem that soil adhered to the surface of waste plastic is inconvenient to clean, and aims to provide a process for regenerating a plastic woven bag by using the waste plastic.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

a process for regenerating a plastic woven bag by using waste plastics comprises the following steps:

(1) classifying the collected waste plastics, pretreating, placing the waste plastics in clear water under the ultrasonic power of 600 plus 800W for cleaning, placing the cleaned waste plastics into a centrifugal machine, and treating for 10-15 minutes at the speed of 2000 r/min;

(2) after the pretreatment is finished, crushing the waste plastics into plastic fragments of 1-1.5cm, then putting the crushed fragments into a cleaning solution for soaking for 20-40min, wherein the cleaning solution is prepared from water, acetic acid with the concentration of 10mol/L and hydrochloric acid with the concentration of 12mol/L according to the weight ratio of 100: 10: 10 in volume ratio; stirring in the soaking process, washing with clear water for 5min after soaking, and then putting into a centrifuge, controlling the temperature at 60-80 ℃, and processing at 2000r/min for 15-20 min to obtain a crushed raw material;

(3) drying the crushed raw materials, and putting the dried crushed raw materials mixed with polyethylene wax, glyceryl stearate, a filler, a light stabilizer and an antioxidant into a wire drawing machine for wire drawing to obtain flat wires with the width of 2.0mm to 3 mm;

(4) and (4) weaving the flat filaments obtained in the step (3) into a cylindrical structural woven material through a circular weaving machine, flattening the woven material, inputting the flattened woven material into a cutting and hemming integrated machine for cutting and hemming, and obtaining a finished woven bag after finishing.

Further, the raw materials mixed into the wire drawing machine comprise 90 to 95 parts by weight of broken plastic, 2 to 3 parts by weight of polyethylene wax, 1.5 to 2 parts by weight of glyceryl stearate, 0.8 to 1.5 parts by weight of filler, 0.5 to 1 part by weight of light stabilizer and 0.5 to 1 part by weight of antioxidant.

Further, the cutting and hemming all-in-one machine comprises: the device comprises a device bracket, wherein a material roll feeding table is arranged at the upper part of the device bracket, and a feeding pair roller is arranged on one side of the material roll feeding table;

the device comprises a device support, a first driving shaft and a second driving shaft are mounted on the device support, the first driving shaft is driven by a stepping motor, a first feeding conveying belt and a second feeding conveying belt are mounted on the first driving shaft and the second driving shaft, an isolation lug is arranged on the second driving shaft and is positioned between the first feeding conveying belt and the second feeding conveying belt, an intermediate wheel is mounted on the device support and is tightly attached to the first feeding conveying belt, the first feeding conveying belt and the second feeding conveying belt between the intermediate wheel and the first driving shaft are parallel to each other, a guide groove rod is mounted on the device support between the intermediate wheel and the first driving shaft and is positioned between the first feeding conveying belt and a material roll feeding table, an edge sewing machine is mounted on the lower portion of the guide groove rod, and a portal frame is arranged on the material roll feeding table between the guide groove rod and a feeding pair roller, an electric push rod is installed on the upper portion of the portal frame, a cutter mechanism is fixed to the lower end of the electric push rod, a plugboard is installed on the cutter mechanism, and the plugboard is located between the first feeding conveying belt and the second feeding conveying belt.

Further, the guide groove pole is close to first pay-off conveyer belt one side equidistant and is equipped with the mounting groove, the mounting groove tangent plane is the type structure of dogging, and two slide bars are installed to every mounting groove, the gyro wheel is installed respectively at the slide bar both ends, the gyro wheel is located inside the mounting groove, independently installs the connecting rod on the every slide bar, the connecting rod end articulates on the supporting wheel, first pay-off conveyer belt setting is hugged closely to the supporting wheel, is equipped with traction spring between two connecting rods in same mounting groove.

Further, cutter mechanism includes cutter frame, seal board, cutter frame fixed mounting is on electric putter output, the seal board is fixed in the cutter frame lower part, supporting spring is installed to the cutter frame lower part, cutter board is installed to the supporting spring lower part, the cutter is installed to the cutter board bottom, install the cross axle on the device support, be fixed with the backing plate on the device support on cross axle upper portion, the backing plate is located under the cutter, drive gear is installed respectively at the cross axle both ends, cutter frame both sides are fixed with the rack respectively, when cutter frame moves down, drive gear meshing rack, fixed mounting has the lower plate on the cross axle, the lower plate is kept away from cross axle one side both ends and is connected with the haulage rope respectively, is close to the guide way pole bottom of feeding pair roller one side and installs buffer pulley, the haulage rope walks around buffer pulley and connects on the picture peg, vertical guide grooves are respectively arranged on two sides of the portal frame, and a tension spring is connected between the upper part of the plugboard and the portal frame.

Furthermore, a stand column is fixed on the upper portion of the cutter plate and is inserted into the cutter frame in a sliding mode, the stand column is perpendicular to the cutter plate, a limiting spring is installed on the lower portion of the cutter plate, a pressing strip is fixed at the bottom of the limiting spring, and the pressing strip is located on the upper portion of the base plate.

The invention has the beneficial effects that:

the ultrasonic cleaning machine is simple in structure, waste plastics are placed in an ultrasonic environment in advance, soil on the surfaces of the waste plastics is pre-cleaned by ultrasonic waves, the waste plastics are sheared after being cleaned, then a shearing material is put into a cleaning solution containing hydrochloric acid and acetic acid, the acetic acid and the hydrochloric acid in the cleaning solution can react with the soil on the surfaces of the waste plastics after being diluted, calcium carbonate in the soil is corroded, the surfaces of the waste plastics are further cleaned, the content of soil mixed in the waste plastics during production of plastic woven bags is reduced, and the production quality of the plastic woven bags is improved.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a schematic view of the installation of the lower plate of the present invention;

FIG. 3 is a side view of the portal frame installation of the present invention;

FIG. 4 is a view of the cutter mechanism of the present invention;

FIG. 5 is a diagram of the present invention showing the inverted state of the lower plate;

FIG. 6 is a schematic view of the connecting rod mounting structure of the present invention;

in the figure: 1. a device holder; 2. a material roll feeding table; 3. feeding roller pairs; 12. a first drive shaft; 13. a second drive shaft; 14. a stepping motor; 15. a first feeding conveyor belt; 16. a second feeding conveyor belt; 17. isolating the bumps; 18. an intermediate wheel; 19. a guide groove rod; 20. a gantry; 21. an electric push rod; 22. a hemming machine; 23. a cutter mechanism; 24. inserting plates; 31. a cutter frame; 32. printing a pressing plate; 33. a cutter plate; 34. a support spring; 35. a cutter; 36. a horizontal axis; 37. a base plate; 38. a drive gear; 39. a rack; 40. a lower base plate; 41. a hauling rope; 42. a buffer pulley; 43. a vertical guide groove; 44. a traction spring; 51. a column; 52. a limiting spring; 53. layering; 61. mounting grooves; 62. a slide bar; 63. a roller; 64. a connecting rod; 65. a support wheel; 66. a tension spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Example 1

The raw materials mixed into the wire drawing machine comprise 90 to 95 parts by weight of broken plastic, 2 to 3 parts by weight of polyethylene wax, 1.5 to 2 parts by weight of glyceryl stearate, 0.8 to 1.5 parts by weight of filler, 0.5 to 1 part by weight of light stabilizer and 0.5 to 1 part by weight of antioxidant.

The waste plastic is placed in an ultrasonic environment in advance, soil on the surface of the waste plastic is pre-cleaned by utilizing ultrasonic waves, shearing is carried out after cleaning is finished, then a shearing material is put into a cleaning solution containing hydrochloric acid and acetic acid, the acetic acid and the hydrochloric acid in the cleaning solution can react with the soil on the surface of the waste plastic after being diluted, calcium carbonate in the soil is corroded, the surface of the waste plastic is further cleaned, the soil content mixed in the waste plastic during production of a plastic woven bag is reduced, and the production quality of the plastic woven bag is improved.

Example 2

On the basis of example 1, as shown in FIGS. 1-5; the weaving material need carry out the hem to the cutting edge after the cutting is accomplished, among the prior art, the cutting material direct input that the cutting was accomplished is to the conveyer belt, utilizes the conveyer belt to carry the cutting material to the hemming machine in, this in-process, the side that the cutting material was sewed up in the transportation process area lacks the location, causes easily during the transport to sew up the side skew, therefore need carry out the opposite side operation, influences production efficiency, consequently sets up cutting hemming all-in-one, and cutting hemming all-in-one includes: the device comprises a device support 1, wherein a material roll feeding table 2 is arranged at the upper part of the device support 1, and a feeding roller pair 3 is arranged on one side of the material roll feeding table 2;

a first driving shaft 12 and a second driving shaft 13 are arranged on a device bracket 1, the first driving shaft 12 is driven by a stepping motor 14, a first feeding conveyer belt 15 and a second feeding conveyer belt 16 are arranged on the first driving shaft 12 and the second driving shaft 13, an isolation lug 17 is arranged on the second driving shaft 13, the isolation lug 17 is positioned between the first feeding conveyer belt 15 and the second feeding conveyer belt 16, an intermediate wheel 18 is arranged on the device bracket 1, the intermediate wheel 18 is tightly attached to the first feeding conveyer belt 15, the first feeding conveyer belt 15 and the second feeding conveyer belt 16 between the intermediate wheel 18 and the first driving shaft 12 are parallel to each other, a guide groove rod 19 is arranged on the device bracket 1 between the intermediate wheel 18 and the first driving shaft 12, the guide groove rod 19 is positioned between the first feeding conveyer belt 15 and a material roll feeding table 2, an edge sewing machine 22 is arranged at the lower part of the guide groove rod 19, and a material roll feeding table 2 between the guide groove rod 19 and a feeding counter roller 3 is provided, an electric push rod 21 is installed on the upper portion of the portal frame 20, a cutter mechanism 23 is fixed at the lower end of the electric push rod 21, an inserting plate 24 is installed on the cutter mechanism 23, and the inserting plate 24 is located between the first feeding conveying belt 15 and the second feeding conveying belt 16.

The cutter mechanism 23 comprises a cutter frame 31, a printing plate 32 and a cutter plate 33, the cutter frame 31 is fixedly arranged on the output end of the electric push rod 21, the printing plate 32 is fixed on the lower part of the cutter frame 31, a supporting spring 34 is arranged on the lower part of the cutter frame 31, the cutter plate 33 is arranged on the lower part of the supporting spring 34, a cutter 35 is arranged on the bottom of the cutter plate 33, a cross shaft 36 is arranged on the device bracket 1, a backing plate 37 is fixed on the device bracket 1 on the upper part of the cross shaft 36, the backing plate 37 is positioned under the cutter 35, a driving gear 38 is respectively arranged on two ends of the cross shaft 36, racks 39 are respectively fixed on two sides of the cutter frame 31, when the cutter frame 31 moves downwards, the driving gear 38 is meshed with the racks 39, a lower bottom plate 40 is fixedly arranged on the cross shaft 36, two ends of the lower bottom plate 40 far away from the cross shaft 36 are respectively connected with a traction rope 41, a buffer, vertical guide grooves 43 are respectively arranged on two sides of the portal frame 20, and a pinching traction spring 44 is connected between the upper part of the flashboard 24 and the portal frame 20.

The tubular knitting material is input through the material roll feeding table 2, the knitting material is flattened into a plane when passing through the feeding roller pair 3, the knitting material passes through between the cutter 35 and the backing plate 37, the first feeding conveyer belt 15 and the second feeding conveyer belt 16 stop moving during feeding, when the knitting material needs to be cut, the electric push rod 21 is utilized to push the cutter mechanism 23 to move downwards integrally, the cutter rest 31 on the cutter mechanism 23 drives the printing and pressing plate 32 and the cutter plate 33 to move downwards integrally, the cutter 35 at the lower part of the cutter plate 33 contacts the knitting material in advance during the downward movement, the cutter 35 cuts the knitting material under the extrusion force of the backing plate 37, meanwhile, the cutter rest 31 continues to move downwards, the supporting spring 34 between the cutter plate 33 and the cutter rest 31 is extruded and contracted, the racks 39 at the two sides of the cutter rest 31 move downwards along with the cutter rest 31, the racks 39 contact the driving gear 38 during the downward movement, the driving gear 38 is driven to rotate due to the gear engagement effect, the driving gear 38 drives the cross shaft 36 and the lower bottom plate 40 to rotate, when the lower bottom plate 40 rotates to a horizontal position, the upper end face of the lower bottom plate 40 is attached to the lower end face of the printing plate 32 at the lower part of the cutter frame 31, a carrying hole can be formed in the woven bag under the action of extrusion force of the printing plate 32 and the lower bottom plate 40, after cutting and punching are completed, the electric push rod 21 retracts to drive the cutter frame 31 to move upwards, meanwhile, the rack 39 is driven to move upwards, when the rack 39 moves upwards, the driving gear 38 is pulled to rotate reversely, the driving gear 38 drives the cross shaft 36 and the lower bottom plate 40 to rotate, so that the lower bottom plate 40 is separated from the printing plate 32, the electric push.

When the electric push rod 21 extends out, the rack 39 drives the driving gear 38 to rotate, the lower bottom plate 40 rotates along with the rotation, so that the lower bottom plate 40 pulls the pulling rope 41 to move, the pulling rope 41 pulls the inserting plate 24 to move along the vertical guide groove 43, when the inserting plate 24 moves, the cut material at the lower part of the inserting plate 24 is pushed downwards into the gap between the first feeding conveyer belt 15 and the second feeding conveyer belt 16, one end of the cut woven material is folded and exposed at the lower parts of the first feeding conveyer belt 15 and the second feeding conveyer belt 16 due to the extrusion of the inserting plate 24, the first driving shaft 12 drives the first feeding conveyer belt 15 and the second feeding conveyer belt 16 to move simultaneously, so as to drive the cut woven material to move, when the woven material moves to the hemming machine, the part of the woven material, which is folded and exposed at the lower parts of the first feeding conveyer belt 15 and the second feeding conveyer belt 16, passes through, the realization is to the seam limit of braided bag, and whole in-process fixes a position the side that needs to sew up promptly after the cutting is accomplished, and keeps the area throughout in transportation process and sews up the location of side, need not to carry out the opposite side once more when sewing up the limit, has effectively avoided the braided bag to take place the skew when carrying between cutting and seam limit, has improved production efficiency greatly.

Example 3

On the basis of example 2, as shown in fig. 4; an upright post 51 is fixed on the upper part of the cutter plate 33, the upright post 51 is inserted into the cutter frame 31 in a sliding manner, the upright post 51 is perpendicular to the cutter plate 33, a limiting spring 52 is installed on the lower part of the cutter plate 33, a pressing strip 53 is fixed on the bottom of the limiting spring 52, and the pressing strip 53 is positioned on the upper part of the backing plate 37.

When the cutter plate 33 moves downwards, the pressing strip 53 is in contact with the woven material in advance, and when the electric push rod 21 extends out, the limiting spring 52 is extruded, so that the pressing strip 53 extrudes the backing plate 37, the woven material is pre-fixed, and the woven material is prevented from falling off at the end after being cut.

Example 4

On the basis of example 2, as shown in fig. 6; first pay-off conveyer belt 15 and second pay-off conveyer belt 16 are when removing, when moving to both intermediate positions, both centre gripping dynamics or reduction, therefore can cause the location to the braided bag not hard up, influence location effect, through being close to first pay-off conveyer belt 15 one side at guide way pole 19 and being equipped with mounting groove 61 at an equal interval, the mounting groove 61 tangent plane is the type structure of dogging, two slide bars 62 are installed to every mounting groove 61, gyro wheel 63 is installed respectively at slide bar 62 both ends, gyro wheel 63 is located inside mounting groove 61, independently install connecting rod 64 on every slide bar 62, the connecting rod 64 end articulates on supporting wheel 65, supporting wheel 65 hugs closely first pay-off conveyer belt 15 and sets up, be equipped with tension spring 66 between two connecting rods 64 in same mounting groove 61.

Utilize tension spring 66 effect pulling two connecting rods 64 to draw close, and then make connecting rod 64 jack-up supporting wheel 65 for supporting wheel 65 extrudes first pay-off conveyer belt 15 to second pay-off conveyer belt 16 one side, improves the extrusion force between first pay-off conveyer belt 15 and second pay-off conveyer belt 16, makes the better centre gripping braided bag of first pay-off conveyer belt 15 and second pay-off conveyer belt 16, prevents that the braided bag is not hard up.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A process for regenerating a plastic woven bag by using waste plastics is characterized by comprising the following steps:

2. The process for recycling the plastic woven bag by using the waste plastic as claimed in claim 1, wherein the raw materials mixed into the wire drawing machine in parts by weight comprise 90-95 parts of broken plastic, 2-3 parts of polyethylene wax, 1.5-2 parts of glyceryl stearate, 0.8-1.5 parts of filler, 0.5-1 part of light stabilizer and 0.5-1 part of antioxidant.

3. The process for recycling the plastic woven bags by the waste plastics as claimed in claim 1, wherein the cutting and hemming integrated machine comprises: the device comprises a device bracket, wherein a material roll feeding table is arranged at the upper part of the device bracket, and a feeding pair roller is arranged on one side of the material roll feeding table;

4. The process for recycling the plastic woven bags with the waste plastics as claimed in claim 3, wherein the guide groove rods are provided with mounting grooves at equal intervals near one side of the first feeding and conveying belt, the section of each mounting groove is of a convex structure, each mounting groove is provided with two sliding rods, two ends of each sliding rod are respectively provided with a roller, the rollers are located inside the mounting grooves, each sliding rod is independently provided with a connecting rod, the ends of the connecting rods are hinged on supporting wheels, the supporting wheels are arranged close to the first feeding and conveying belt, and a traction spring is arranged between the two connecting rods in the same mounting groove.

5. The process of claim 1, wherein the cutter mechanism comprises a cutter frame, a platen and a cutter plate, the cutter frame is fixedly mounted at the output end of the electric push rod, the platen is fixed at the lower part of the cutter frame, a support spring is mounted at the lower part of the cutter frame, the cutter plate is mounted at the lower part of the support spring, a cutter is mounted at the bottom of the cutter plate, a cross shaft is mounted on the device support, a backing plate is fixed on the device support at the upper part of the cross shaft and positioned under the cutter, drive gears are respectively mounted at the two ends of the cross shaft, racks are respectively fixed at the two sides of the cutter frame, when the cutter frame moves downwards, the drive gears are meshed with the racks, a lower plate is fixedly mounted on the cross shaft, and both ends of the lower plate, far away from the cross shaft, are respectively connected with a traction rope, the bottom of the guide groove rod close to one side of the feeding pair rollers is provided with a buffer pulley, the traction rope bypasses the buffer pulley and is connected to the inserting plate, the two sides of the portal frame are respectively provided with a vertical guide groove, and a tension spring is connected between the upper part of the inserting plate and the portal frame.

6. The process for recycling the plastic woven bags by using the waste plastics as claimed in claim 5, wherein an upright post is fixed on the upper portion of the cutter plate, the upright post is slidably inserted into the cutter frame, the upright post is perpendicular to the cutter plate, a limiting spring is installed on the lower portion of the cutter plate, a pressing strip is fixed on the bottom of the limiting spring, and the pressing strip is located on the upper portion of the base plate.