CN110605809A - Production process of plastic pallet with fork-shaped inlet at four sides - Google Patents
Production process of plastic pallet with fork-shaped inlet at four sides Download PDFInfo
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- CN110605809A CN110605809A CN201910848431.6A CN201910848431A CN110605809A CN 110605809 A CN110605809 A CN 110605809A CN 201910848431 A CN201910848431 A CN 201910848431A CN 110605809 A CN110605809 A CN 110605809A
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- polishing
- servo motor
- screw rod
- plastic tray
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/03—Injection moulding apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a production process of a four-side-entering fork type plastic tray, which comprises the following steps of respectively drying two raw materials of regenerated high-density polyethylene and regenerated high-density polypropylene to obtain two dry solid raw materials, and mixing the two dry solid raw materials in the following mixing proportion: the raw material mixture is obtained after the regenerated high-density polyethylene accounts for 10-30 wt% of the total weight of the raw materials and the regenerated high-density polypropylene accounts for 90-70 wt% of the total weight of the raw materials are uniformly mixed, and the tray is convenient to fix and disassemble through the arrangement of the clamp, the first sliding block and the second sliding block, is beneficial to polishing trays with different sizes, and avoids the problem that the polishing precision is low due to the fact that the tray moves in the polishing process; through the setting of the polishing assembly, the position of the polishing disc is convenient to adjust, the automation degree is high, and the polishing machine is convenient and practical.
Description
Technical Field
The invention relates to the technical field of plastic tray processing, in particular to a production process of a four-side-entering fork type plastic tray.
Background
The pallet is a loading and unloading pallet composed of a load surface capable of bearing a plurality of articles and a forklift socket, which is used for facilitating loading, unloading, transportation, storage, distribution and the like of goods, is vividly known as a movable ground surface and a movable goods platform by the logistics industry, and has wide application value in the field of commodity circulation. The advantages of pallet intermodal transport: the method has the advantages of saving labor, time and labor, being safe and efficient, reducing the packing cost of goods, saving the storage area, and fully utilizing the storage capacity by multilayer stacking.
In patent No. CN1887952A, a method for producing a logistics tray by using waste plastics is disclosed, wherein the logistics tray is obtained by cleaning, drying, sorting and crushing polyethylene and polypropylene waste plastics, adding modifiers such as chlorinated propylene resin MPP, calcium carbonate, stearate and surfactant which is polyethylene glycol, and performing injection molding; however, this method has the following drawbacks: 1. the pallet is formed by die pressing at high temperature and high pressure, the surface of the pallet is rough, the structural performance is poor, the pallet can only be used as an article backing plate, and the pallet has poor strength and toughness and cannot be circulated for a long time; 2. the in-process of polishing the tray is usually to rely on the manual work of workman to polish, and the in-process tray of polishing like this takes place the drunkenness easily, leads to the precision of polishing low, is not convenient for polish the tray of equidimension not, is not convenient for fix simultaneously and dismantle the tray, and the equipment of polishing degree of automation is low, is not convenient for adjust the position of polishing the dish.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a production process of a four-side entering fork type plastic pallet:
in the process for preparing the plastic tray, the tray is produced by utilizing two raw materials of the regenerated high-density polyethylene and the regenerated high-density polypropylene, so that the resource reutilization can be improved, and the one-time cross-linking reaction injection molding is adopted, so that the production link of re-granulation is reduced, the boundary or discontinuity among the past chemical modification, physical modification and molding processing is broken through, the cycle of plastic material preparation and product production is greatly shortened, and a large amount of energy is saved; the addition of the cross-linking agent, the ethylene-n-butyl acrylate-glycidyl methacrylate terpolymer is a flexible chain segment which can play a toughening role in the blend; the epoxy group on the glycidyl methacrylate can react with the polar group on the polyester, so that the effect of reaction and blending is achieved;
according to the invention, through the arrangement of the clamp, the first sliding block and the second sliding block, the tray is convenient to fix and disassemble, the polishing of trays with different sizes is facilitated, and the polishing precision is low due to the fact that the tray moves in the polishing process; through the setting of the polishing assembly, the position of the polishing disc is convenient to adjust, the automation degree is high, and the polishing machine is convenient and practical.
The purpose of the invention can be realized by the following technical scheme:
a production process of a four-side entering fork type plastic pallet comprises the following steps:
step one, respectively drying two raw materials of regenerated high-density polyethylene and regenerated high-density polypropylene to obtain two dry solid raw materials, and mixing the two dry solid raw materials in the mixing ratio of: the method comprises the following steps of uniformly mixing 10-30 wt% of regenerated high-density polyethylene and 90-70 wt% of regenerated high-density polypropylene to obtain a raw material mixture, respectively adding 2-6 wt% of an elastomer toughening agent, 0.5-3 wt% of a cross-linking agent, 0.5-2 wt% of a flow aid and 0.5-0.6 wt% of an organic pigment into the raw material mixture, and uniformly mixing to obtain a mixture;
secondly, reacting the mixture in an injection molding machine with 20000 to 40000 g at 100-220 ℃ in a plunger cylinder, and then performing injection molding, wherein the mold temperature is 20-50 ℃, the injection pressure is 80-140 MPa, the pressure maintaining pressure is 30-60% of the injection pressure, the back pressure is 5-20 MPa, and the mold is cooled to obtain a primary plastic tray;
placing the primary plastic tray between two fixtures of the grinding machine, wherein one end of the primary plastic tray is aligned with the top plate, driving a first servo motor to drive a first screw rod to rotate, and the first screw rod drives a first sliding block and a second sliding block to move relatively so as to drive the fixtures to fix the primary plastic tray; then, a third servo motor is driven to drive a fourth screw rod to rotate, the fourth screw rod drives a fifth slide block to descend so as to drive a polishing disc to descend, and meanwhile, a rotating motor is driven to rotate and drives the polishing disc to polish the primary plastic tray through a rotating shaft; in the polishing process, a second servo motor is driven, the second servo motor drives a second lead screw to rotate, the second lead screw drives a third sliding block to slide, a third sliding rail is driven to move back and forth under the synergistic effect of a fourth sliding block, a polishing disc is driven to move back and forth, a fourth servo motor is driven, the fourth servo motor drives a sixth sliding block to move left and right through the third lead screw, the polishing disc is driven to move left and right, the position of the polishing disc is adjusted, and a plastic tray is obtained after polishing is completed.
As a further scheme of the invention: the elastomer toughening agent is a block copolymer formed by styrene-ethylene/butylene-styrene or an ethylene-octene synthetic copolymer.
As a further scheme of the invention: the cross-linking agent is dicumyl peroxide or ethylene-n-butyl acrylate-glycidyl methacrylate terpolymer.
As a further scheme of the invention: the flow aid is a branched mixture of high molecular weight saturated fatty acid esters or a diffusion oil.
As a further scheme of the invention: the drying step in the first step is as follows: respectively crushing 10-30 parts of regenerated high-density polyethylene and 70-90 parts of regenerated high-density polypropylene into particles with the particle size of 2-6 mm, and drying for 2-4 hours at 100-120 ℃ after cleaning.
As a further scheme of the invention: the organic pigment is any one of azo pigment, phthalocyanine pigment and quinacridone pigment.
As a further scheme of the invention: the grinding machine comprises the following working steps: firstly, placing a primary plastic tray between two clamps, wherein one end of the primary plastic tray is aligned with a top plate, driving a first servo motor to drive a first screw rod to rotate, and the first screw rod drives a first sliding block and a second sliding block to move relatively so as to drive the clamps to fix the primary plastic tray; then driving a third servo motor to drive a fourth screw rod to rotate, driving a fifth slide block to descend by the fourth screw rod, further driving a polishing disc to descend, and simultaneously driving a rotating motor to rotate, wherein the rotating motor drives a polishing disc to polish the primary plastic tray by a rotating shaft; starting a water pump in the polishing process, pumping water in the water tank to a spray head through a water pipe, spraying water to the spray head for cooling, and filtering the cooled water through a filter screen to return to the water tank again for recycling; and after polishing, obtaining the plastic tray.
As a further scheme of the invention: the polisher comprises a base, supports and polishing assemblies, the supports are symmetrically installed at two ends of the top of the base, a top plate is arranged between the two supports, the polishing assemblies are installed at the tops of the supports and comprise a first slide rail, a second lead screw, a third slide block, a second servo motor, a third servo motor, a second slide rail, a third lead screw, a third slide rail, a fourth servo motor, a fourth slide block, a guide rod, a fourth slide rail, a polishing disc, a rotating shaft, a rotating motor, a fifth slide block, a sixth slide block, a fourth lead screw and a second spring, the first slide rail and the fourth slide rail are respectively installed on the two supports, the second servo motor is fixedly installed on the first slide rail, an output shaft of the second servo motor is connected with the second lead screw through a coupler, the second lead screw penetrates through the third slide block and is in transmission connection with the first slide rail, the fourth slide rail is symmetrically provided with two guide rods, the guide rods are connected with a fourth slide block in a sliding manner, the guide rods are sleeved with second springs, two sides of the fourth slide block are connected with the fourth slide rail through the second springs, the fourth slide block and the third slide block are fixedly provided with a third slide rail, a fourth servo motor is fixedly arranged on the third slide rail, an output shaft of the fourth servo motor is connected with a third lead screw through a coupler, the third lead screw penetrates through the sixth slide block and is in transmission connection with the third slide rail, the sixth slide block is provided with a second slide rail perpendicular to the sixth slide block, a third servo motor is fixedly arranged on the second slide rail, an output shaft of the third servo motor is connected with the fourth lead screw through a coupler, the fourth lead screw penetrates through the fifth slide block and is in transmission connection with the second slide rail, and the fifth slide block is fixedly provided with a rotating motor, an output shaft of the rotating motor is connected with a rotating shaft, and a polishing disc is fixedly mounted at the bottom of the rotating shaft;
a first servo motor is fixedly installed on one side of the base, an output shaft of the first servo motor is fixedly connected with a first lead screw arranged in a sliding groove, the sliding groove is arranged on the top of the base and is positioned between the two supports, a first sliding block and a second sliding block are sleeved on the first lead screw, clamps are fixedly installed on the first sliding block and the second sliding block respectively, each clamp comprises a sliding plate, a first spring and a clamping plate, and the sliding plate is connected with the clamping plate through the three first springs;
the improved water tank is characterized in that a plurality of through holes are uniformly formed in the base, a water tank is arranged in the base, a detachable filter screen is arranged in the water tank, one side of the water tank is connected with the water tank through a water discharge pipe, a water pump is arranged on one side of the water tank, a water pipe is arranged on the water pump, and the water pipe penetrates through a support and is connected with the spray head.
The invention has the beneficial effects that:
1. in the process for preparing the plastic tray, the tray is produced by utilizing two raw materials of regenerated high-density polyethylene and regenerated high-density polypropylene, so that the resource reutilization can be improved, and one-time cross-linking reaction injection molding is adopted, so that the production link of re-granulation is reduced, the boundary or discontinuity among the past chemical modification, physical modification and molding processing is broken through, the cycle of plastic material preparation and product production is greatly shortened, and a large amount of energy is saved; the crosslinking agent is added, and the ethylene-n-butyl acrylate-glycidyl methacrylate terpolymer is a flexible chain segment which can play a toughening role in the blend; the epoxy group on the glycidyl methacrylate can react with the polar group on the polyester, so that the effect of reaction and blending is achieved; the modifier is used as a synergist of the past additives in waste materials to adjust the balance relationship among various additives, and is used for improving the compatibility and network structure of different molecules to ensure that the additives are uniform and the stress cracking performance, the corrosion resistance and the creep resistance of products can be improved;
2. the invention is in the process of polishing the tray; the method comprises the following steps that firstly, a primary plastic tray is placed between two clamps, one end of the primary plastic tray is aligned with a top plate, a first servo motor is driven to drive a first screw rod to rotate, the first screw rod drives a first sliding block and a second sliding block to move relatively, and then the clamps are driven to fix the primary plastic tray, so that the phenomenon that the tray moves in the polishing process and the polishing precision of the tray is low is avoided; in the process that the tray is fixed by the clamp, the first spring has a good buffering protection effect, so that the tray is prevented from being damaged; the first screw rod can also drive the first sliding block and the second sliding block to move oppositely, so that the distance between the first sliding block and the second sliding block can be conveniently adjusted, trays with different sizes can be conveniently fixed, and the trays can be conveniently mounted and dismounted;
then, a third servo motor is driven to drive a fourth screw rod to rotate, the fourth screw rod drives a fifth slide block to descend so as to drive a polishing disc to descend, and meanwhile, a rotating motor is driven to rotate and drives the polishing disc to polish the primary plastic tray through a rotating shaft; in the polishing process, a second servo motor is driven, the second servo motor drives a second screw rod to rotate, the second screw rod drives a third slide block to slide, a fourth slide block can be driven to slide on a fourth slide rail, and the fourth slide block can be buffered under the action of a second spring when sliding, so that a good protection effect is achieved; under the cooperative action of the third slide block and the fourth slide block, the third slide rail can be driven to move back and forth, so that the polishing disc is driven to move back and forth, and a fourth servo motor is driven, and the sixth slide block is driven by the fourth servo motor to move up and down through a third screw rod, so that the polishing disc is driven to move up and down; the polishing assembly is convenient for adjusting the position of the polishing disc back and forth, left and right and up and down, is more convenient and practical, and has high automation degree;
the in-process start water pump of polishing takes out the shower nozzle with the water in the water tank through the water pipe, and the shower nozzle carries out the watering cooling, avoids the in-process of polishing, and the tray has been damaged to the high temperature, and the water after the cooling can get back to the water tank well cycle again after passing through the filter screen and filtering and use, can the recycled water, water economy resource.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the overall construction of the sander of the present invention;
FIG. 2 is a schematic top view of the sanding assembly of the present invention;
FIG. 3 is a front view of the grinding assembly of the present invention;
FIG. 4 is a schematic view of the clamp of the present invention;
fig. 5 is a schematic view of the internal structure of the base of the present invention.
In the figure: 1. a base; 2. a top plate; 3. a through hole; 4. a clamp; 41. a sliding plate; 42. a first spring; 43. a splint; 5. a support; 6. a spray head; 7. a water tank; 8. a water pipe; 9. polishing the assembly; 10. a first servo motor; 11. a first lead screw; 12. a first slider; 13. a chute; 14. filtering with a screen; 15. a water tank; 16. a drain pipe; 17. a water pump; 18. a second slider; 91. a first slide rail; 92. a second lead screw; 93. a third slider; 94. a second servo motor; 95. a third servo motor; 96. a second slide rail; 97. a third screw rod; 98. a third slide rail; 99. a fourth servo motor; 910. a fourth slider; 911. a guide bar; 912. a fourth slide rail; 913. grinding disc; 914. a rotating shaft; 915. a rotating electric machine; 916. a fifth slider; 917. a sixth slider; 918. a fourth screw rod; 919. a second spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a four-side feeding fork plastic pallet is manufactured by the following steps:
step one, respectively drying two raw materials of regenerated high-density polyethylene and regenerated high-density polypropylene to obtain two dry solid raw materials, and mixing the two dry solid raw materials in the mixing ratio of: the method comprises the following steps of uniformly mixing 10-30 wt% of regenerated high-density polyethylene and 90-70 wt% of regenerated high-density polypropylene to obtain a raw material mixture, respectively adding 2-6 wt% of an elastomer toughening agent, 0.5-3 wt% of a cross-linking agent, 0.5-2 wt% of a flow aid and 0.5-0.6 wt% of an organic pigment into the raw material mixture, and uniformly mixing to obtain a mixture;
secondly, reacting the mixture in an injection molding machine with 20000 to 40000 g at 100-220 ℃ in a plunger cylinder, and then performing injection molding, wherein the mold temperature is 20-50 ℃, the injection pressure is 80-140 MPa, the pressure maintaining pressure is 30-60% of the injection pressure, the back pressure is 5-20 MPa, and the mold is cooled to obtain a primary plastic tray;
placing the primary plastic tray between two clamps 4 of the grinding machine, wherein one end of the primary plastic tray is aligned with the top plate 2, driving a first servo motor 10 to drive a first screw rod 11 to rotate, and the first screw rod 11 drives a first slide block 12 and a second slide block 18 to move relatively, so as to drive the clamps 4 to fix the primary plastic tray; then, the third servo motor 95 is driven to drive the fourth screw 918 to rotate, the fourth screw 918 drives the fifth slider 916 to descend, so as to drive the polishing disc 913 to descend, and simultaneously drive the rotating motor 915 to rotate, and the rotating motor 915 drives the polishing disc 913 to polish the primary plastic tray through the rotating shaft 914; in the polishing process, the second servo motor 94 is driven, the second servo motor 94 drives the second screw rod 92 to rotate, the second screw rod 92 drives the third slider 93 to slide, the third slide rail 98 is driven to move back and forth under the synergistic effect of the fourth slider 910, the polishing disc 913 is driven to move back and forth, the fourth servo motor 99 is driven, the fourth servo motor 99 drives the sixth slider 917 to move left and right through the third screw rod 97, the polishing disc 913 is driven to move left and right, the position of the polishing disc 913 is adjusted, and after polishing is completed, the plastic tray is obtained.
The elastomer toughening agent is a block copolymer formed by styrene-ethylene/butylene-styrene or an ethylene-octene synthetic copolymer.
The cross-linking agent is dicumyl peroxide or ethylene-n-butyl acrylate-glycidyl methacrylate terpolymer.
The flow aid is a branched mixture of high molecular weight saturated fatty acid esters or a diffusion oil.
The drying step in the first step is as follows: respectively crushing 10-30 parts of regenerated high-density polyethylene and 70-90 parts of regenerated high-density polypropylene into particles with the particle size of 2-6 mm, and drying for 2-4 hours at 100-120 ℃ after cleaning.
The organic pigment is any one of azo pigment, phthalocyanine pigment and quinacridone pigment.
The grinding machine comprises the following working steps: firstly, a primary plastic tray is placed between two clamps 4, one end of the primary plastic tray is aligned with a top plate 2, a first servo motor 10 is driven to drive a first screw rod 11 to rotate, the first screw rod 11 drives a first slide block 12 and a second slide block 18 to move relatively, and then the clamps 4 are driven to fix the primary plastic tray; then, the third servo motor 95 is driven to drive the fourth lead screw 918 to rotate, the fourth lead screw 918 drives the fifth slide block 916 to descend so as to drive the polishing disc 913 to descend, and simultaneously the rotary motor 915 is driven to rotate, the rotary motor 915 drives the polishing disc 913 to polish the primary plastic tray through the rotating shaft 914, during polishing, the second servo motor 94 is driven, the second servo motor 94 drives the second lead screw 92 to rotate, the second lead screw 92 drives the third slide block 93 to slide, under the synergistic action with the fourth slide block 910, the third slide rail 98 is driven to move back and forth so as to drive the polishing disc 913 to move back and forth and drive the fourth servo motor 99, the fourth servo motor 99 drives the sixth slide block 917 to move up and down through the third lead screw 97 so as to drive the polishing disc 913 to move up and down, and the position of the polishing disc 913 is adjusted; starting a water pump 17 in the polishing process, pumping water in the water tank 7 to the spray head 6 through the water pipe 8, spraying water on the spray head 6 for cooling, and filtering the cooled water through the filter screen 14 to return to the water tank 7 for recycling; and after polishing, obtaining the plastic tray.
In the process for preparing the plastic tray, the tray is produced by utilizing two raw materials of regenerated high-density polyethylene and regenerated high-density polypropylene, so that the resource reutilization can be improved, and one-time cross-linking reaction injection molding is adopted, so that the production link of re-granulation is reduced, the boundary or discontinuity among the past chemical modification, physical modification and molding processing is broken through, the cycle of plastic material preparation and product production is greatly shortened, and a large amount of energy is saved; the crosslinking agent is added, and the ethylene-n-butyl acrylate-glycidyl methacrylate terpolymer is a flexible chain segment which can play a toughening role in the blend; the epoxy group on the glycidyl methacrylate can react with the polar group on the polyester, so that the effect of reaction and blending is achieved; the modifier is used as a synergist of the past additives in waste materials to adjust the balance relationship among various additives, and is used for improving the compatibility and network structure of different molecules to ensure that the additives are uniform and the stress cracking performance, the corrosion resistance and the creep resistance of products can be improved; the addition and selection of the flow auxiliary agent are convenient for the uniform dispersion of the pigment, the mixing time is shortened, the productivity is improved, the friction force between the melt and a processing machine is reduced, and the surface smoothness of the product is improved; the addition and selection of the elastomer can effectively control the development of the silver streaks and stop the silver streaks in time without developing destructive cracks, the toughness of the product is improved, and the elastomer has very narrow relative molecular mass distribution and short chain distribution, so that the elastomer has excellent physical and mechanical properties, high elasticity, high strength, high elongation and good low-temperature performance, and the narrow relative molecular mass distribution ensures that the material is not easy to warp in the injection molding and extrusion processing processes.
Referring to fig. 1-5, the sander comprises a base 1, brackets 5 and a grinding assembly 9, wherein the brackets 5 are symmetrically installed at two ends of the top of the base 1, a top plate 2 is installed between the two brackets 5, the grinding assembly 9 is installed at the top of the brackets 5, the grinding assembly 9 comprises a first slide rail 91, a second screw 92, a third slide block 93, a second servo motor 94, a third servo motor 95, a second slide rail 96, a third screw 97, a third slide rail 98, a fourth servo motor 99, a fourth slide block 910, a guide rod 911, a fourth slide rail 912, a grinding disc 913, a rotating shaft 914, a rotating motor 915, a fifth slide block 916, a sixth slide block 917, a fourth screw 918 and a second spring 919, the first slide rail 91 and the fourth slide rail 912 are respectively installed on the two brackets 5, the second servo motor 94 is fixedly installed on the first slide rail 91, an output shaft of the second servo motor 94 is connected with a second screw rod 92 through a coupler, the second screw rod 92 penetrates through a third slider 93 and is connected with a first slide rail 91 in a transmission manner, two guide rods 911 are symmetrically arranged on the fourth slide rail 912, a fourth slider 910 is connected on the guide rods 911 in a sliding manner, a second spring 919 is sleeved on the guide rods 911, two sides of the fourth slider 910 are connected with the fourth slide rail 912 through the second spring 919, third slide rails 98 are fixedly arranged on the fourth slider 910 and the third slider 93, a fourth servo motor 99 is fixedly arranged on the third slide rail 98, an output shaft of the fourth servo motor 99 is connected with the third screw rod 97 through a coupler, the third screw rod 97 penetrates through a sixth slider 917 and is connected with the third slide rail 98 in a transmission manner, a second slide rail 96 which is perpendicular to the sixth slider 917 is arranged on the sixth slider 917, a third servo motor 95 is fixedly mounted on the second slide rail 96, an output shaft of the third servo motor 95 is connected with a fourth screw rod 918 through a coupler, the fourth screw rod 918 penetrates through a fifth slide block 916 to be in transmission connection with the second slide rail 96, a rotating motor 915 is fixedly mounted on the fifth slide block 916, an output shaft of the rotating motor 915 is connected with a rotating shaft 914, and a polishing disc 913 is fixedly mounted at the bottom of the rotating shaft 914;
a first servo motor 10 is fixedly installed on one side of the base 1, an output shaft of the first servo motor 10 is fixedly connected with a first screw rod 11 arranged in a sliding groove 13, threads are arranged on the left part and the right part of the first screw rod 11, the thread directions of the left part and the right part are opposite, the sliding groove 13 is arranged on the top of the base 1 and is positioned between two supports 5, a first sliding block 12 and a second sliding block 18 are sleeved on the first screw rod 11, clamps 4 are fixedly installed on the first sliding block 12 and the second sliding block 18, each clamp 4 comprises a sliding plate 41, a first spring 42 and a clamping plate 43, and the sliding plate 41 is connected with the clamping plate 43 through three first springs 42;
evenly there are a plurality of through-holes 3 on the base 1, the internally mounted of base 1 has basin 15, be provided with detachable filter screen 14 in the basin 15, one side of basin 15 is passed through drain pipe 16 and is connected with water tank 7, water pump 17 is installed to one side of water tank 7, install water pipe 8 on the water pump 17, water pipe 8 passes a support 5 and is connected with shower nozzle 6.
The working principle of the invention is as follows: firstly, a primary plastic tray is placed between two clamps 4, one end of the primary plastic tray is aligned with a top plate 2, a first servo motor 10 is driven to drive a first screw rod 11 to rotate, the first screw rod 11 drives a first slide block 12 and a second slide block 18 to move relatively, and then the clamps 4 are driven to fix the primary plastic tray; in the process that the clamp 4 fixes the tray, the first spring 42 has good buffering protection effect, so that the tray is prevented from being damaged; the first screw rod 11 can also drive the first slide block 12 and the second slide block 18 to move oppositely, so that the distance between the first slide block 12 and the second slide block 18 can be conveniently adjusted, trays with different sizes can be conveniently fixed, and the trays can be conveniently mounted and dismounted;
then, the third servo motor 95 is driven to drive the fourth screw 918 to rotate, the fourth screw 918 drives the fifth slider 916 to descend, so as to drive the polishing disc 913 to descend, and simultaneously drive the rotating motor 915 to rotate, and the rotating motor 915 drives the polishing disc 913 to polish the primary plastic tray through the rotating shaft 914; in the polishing process, the second servo motor 94 is driven, the second servo motor 94 drives the second screw rod 92 to rotate, the second screw rod 92 drives the third slide block 93 to slide, the fourth slide block 910 is driven to slide on the fourth slide rail 912, and the fourth slide block 910 can buffer under the action of the second spring 919 when sliding, so that a good protection effect is achieved; under the cooperative action of the third slider 93 and the fourth slider 910, the third slide rail 98 can be driven to move back and forth, so as to drive the polishing disc 913 to move back and forth, and drive the fourth servo motor 99, and the fourth servo motor 99 drives the sixth slider 917 to move up and down through the third screw 97, so as to drive the polishing disc 913 to move up and down; the arrangement of the polishing assembly 9 facilitates the adjustment of the position of the polishing disc 913 back and forth, left and right, and up and down, is more convenient and practical, and has high automation degree;
the in-process that polishes starts water pump 17, draws out shower nozzle 6 with the water in the water tank 7 through water pipe 8, and shower nozzle 6 carries out the watering cooling, avoids the in-process of polishing, and the high temperature has damaged the tray, and the water after the cooling can get back to water tank 7 well recycle once more after filtering through filter screen 14, can the recycling water, water economy resource.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (7)
1. A production process of a four-side entering fork type plastic pallet is characterized by comprising the following steps:
step one, respectively drying two raw materials of regenerated high-density polyethylene and regenerated high-density polypropylene to obtain two dry solid raw materials, and mixing the two dry solid raw materials in the mixing ratio of: the method comprises the following steps of uniformly mixing 10-30 wt% of regenerated high-density polyethylene and 90-70 wt% of regenerated high-density polypropylene, adding 2-6 wt% of an elastomer toughening agent, 0.5-3 wt% of a cross-linking agent, 0.5-2 wt% of a flow assistant and 0.5-0.6 wt% of an organic pigment into the raw material mixture, and uniformly mixing to obtain a mixture;
secondly, reacting the mixture in a plunger charging barrel at 100-220 ℃ in an injection molding machine, and then performing injection molding, wherein the mold temperature is 20-50 ℃, the injection pressure is 80-140 MPa, the pressure maintaining pressure is 30-60% of the injection pressure, the back pressure is 5-20 MPa, and the mold is cooled to obtain a primary plastic tray;
placing the primary plastic tray between two fixtures of the grinding machine, wherein one end of the primary plastic tray is aligned with the top plate, driving a first servo motor to drive a first screw rod to rotate, and the first screw rod drives a first sliding block and a second sliding block to move relatively so as to drive the fixtures to fix the primary plastic tray; then, a third servo motor is driven to drive a fourth screw rod to rotate, the fourth screw rod drives a fifth slide block to descend so as to drive a polishing disc to descend, and meanwhile, a rotating motor is driven to rotate and drives the polishing disc to polish the primary plastic tray through a rotating shaft; in the polishing process, a second servo motor is driven, the second servo motor drives a second lead screw to rotate, the second lead screw drives a third sliding block to slide, a third sliding rail is driven to move under the synergistic effect of a fourth sliding block, a polishing disc is driven to move, a fourth servo motor is driven, the fourth servo motor drives a sixth sliding block to move through the third lead screw, the polishing disc is driven to move, the position of the polishing disc is adjusted, and a plastic tray is obtained after polishing is completed.
2. A four-way access plastic pallet as claimed in claim 1, wherein said elastomer toughening agent is a block copolymer of styrene-ethylene/butylene-styrene or an ethylene-octene synthetic copolymer.
3. The process of claim 1, wherein the cross-linking agent is dicumyl peroxide or ethylene-n-butyl acrylate-glycidyl methacrylate terpolymer.
4. A four-way access fork plastics pallet as claimed in claim 1 wherein the flow aid is a high molecular weight saturated fatty acid ester branched mixture or a spreading oil.
5. The process for producing a four-way access fork plastic pallet as claimed in claim 1, wherein the drying step in the first step is: respectively crushing 10-30 parts by weight of regenerated high-density polyethylene and 70-90 parts by weight of regenerated high-density polypropylene into particles with the particle size of 2-6 mm, and drying for 2-4 hours at 100-120 ℃ after cleaning.
6. A four-way inlet fork plastic pallet as claimed in claim 1, wherein said organic pigment is any one of azo pigment, phthalocyanine pigment and quinacridone pigment.
7. The process for producing a four-way access fork plastic pallet as claimed in claim 1, wherein the grinding machine comprises the following working steps: firstly, placing a primary plastic tray between two clamps, wherein one end of the primary plastic tray is aligned with a top plate, driving a first servo motor to drive a first screw rod to rotate, and the first screw rod drives a first sliding block and a second sliding block to move relatively so as to drive the clamps to fix the primary plastic tray; then driving a third servo motor to drive a fourth screw rod to rotate, driving a fifth slide block to descend by the fourth screw rod, further driving a polishing disc to descend, and simultaneously driving a rotating motor to rotate, wherein the rotating motor drives a polishing disc to polish the primary plastic tray by a rotating shaft; starting a water pump in the polishing process, pumping water in the water tank to a spray head through a water pipe, spraying water to the spray head for cooling, and filtering the cooled water through a filter screen to return to the water tank again for recycling; and after polishing, obtaining the plastic tray.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910848431.6A CN110605809A (en) | 2019-09-09 | 2019-09-09 | Production process of plastic pallet with fork-shaped inlet at four sides |
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| CN201910848431.6A CN110605809A (en) | 2019-09-09 | 2019-09-09 | Production process of plastic pallet with fork-shaped inlet at four sides |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102532715A (en) * | 2012-02-13 | 2012-07-04 | 江苏力达塑料托盘制造有限公司 | Method for preparing plastic tray by one-step injection molding of recycled plastic |
| CN105479287A (en) * | 2016-01-15 | 2016-04-13 | 商丘金振源电子科技有限公司 | Three-shaft deburring system |
| CN106181689A (en) * | 2016-06-30 | 2016-12-07 | 天津市艾碘科技股份有限公司 | A kind of high-precision intelligent formula gemstone full-automatic angle grinder |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532715A (en) * | 2012-02-13 | 2012-07-04 | 江苏力达塑料托盘制造有限公司 | Method for preparing plastic tray by one-step injection molding of recycled plastic |
| CN105479287A (en) * | 2016-01-15 | 2016-04-13 | 商丘金振源电子科技有限公司 | Three-shaft deburring system |
| CN106181689A (en) * | 2016-06-30 | 2016-12-07 | 天津市艾碘科技股份有限公司 | A kind of high-precision intelligent formula gemstone full-automatic angle grinder |
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