CN112959700A

CN112959700A - Manufacturing process of high-strength plastic part

Info

Publication number: CN112959700A
Application number: CN202110138947.9A
Authority: CN
Inventors: 黄祖权
Original assignee: Hangzhou Yutong Cultural Creative Co ltd
Current assignee: Hangzhou Yutong Cultural Creative Co ltd
Priority date: 2021-02-01
Filing date: 2021-02-01
Publication date: 2021-06-15

Abstract

The invention discloses a manufacturing process of a high-strength plastic part, which comprises the following steps: (1) crushing: crushing the recovered plastic bottles collectively by adopting crushing equipment; (2) cleaning: cleaning the plastic bottle by using cleaning equipment after the plastic bottle is crushed; (3) and (3) cooking: putting the cleaned plastic bottle fragments into a cooking machine for cooking and drying; (4) melting: putting the dried plastic bottle fragments into a melt extruder, and melting the plastic bottle fragments in the melt extruder; (5) die filling: putting the molten plastic into the bottle blank; (6) bottle blowing: blowing high-pressure gas into the bottle blank for bottle blowing operation, and then quickly cooling the bottle blank to finish the processing of the plastic bottle. After the plastic bottle is cooked, the plastic bottle fragments are extruded, water is quickly removed, and then the plastic bottle fragments are dried by using waste heat, so that energy is saved, and the working efficiency is improved.

Description

Manufacturing process of high-strength plastic part

Technical Field

The invention belongs to the technical field of plastic part manufacturing, and particularly relates to a manufacturing process of a high-strength plastic part.

Background

The plastic bottle is mainly made of polyethylene or polypropylene and other materials with a plurality of organic solvents. The plastic bottle widely uses Polyester (PET), Polyethylene (PE) and polypropylene (PP) as raw materials, and is a plastic container which is added with a corresponding organic solvent, heated at high temperature, blown, extruded and blown or injection molded by a plastic mold. It is mainly used for liquid or solid disposable plastic packaging containers of beverages, foods, medicines and the like. The plastic bottle has the characteristics of low breakage probability, low cost, high transparency, food-grade raw materials and the like.

In the process of cooking and drying the plastic bottle fragments, because gaps exist between the fragments, the cooked water is difficult to be discharged completely, so that part of hot water remains on the fragments, the drying effect is reduced, and the manufacturing time is prolonged.

Disclosure of Invention

The invention provides a manufacturing process of a high-strength plastic part, which aims to overcome the defects of the prior art and can quickly drain water and improve the red drying effect.

In order to achieve the purpose, the invention adopts the following technical scheme: a process for making a high strength plastic part comprising the steps of: a process for making a high strength plastic part comprising the steps of: (1) crushing: crushing the recovered plastic bottles collectively by adopting crushing equipment; (2) cleaning: cleaning the plastic bottle by using cleaning equipment after the plastic bottle is crushed; (3) and (3) cooking: putting the cleaned plastic bottle fragments into a cooking machine for cooking and drying; (4) melting: putting the dried plastic bottle fragments into a melt extruder, and melting the plastic bottle fragments in the melt extruder; (5) die filling: putting the molten plastic into the bottle blank; (6) bottle blowing: blowing high-pressure gas into the bottle blank for bottle blowing operation, and then quickly cooling the bottle blank to finish the processing of the plastic bottle.

The cooking machine comprises a frame, a feeding area symmetrically arranged on the frame, a first conveying part arranged on the feeding area, a heating area arranged on the frame, a second conveying part arranged on the heating area, a ventilating area arranged on the frame and a drying part arranged on the ventilating area.

Put the plastic bottle piece that washs and transport the zone of heating through first transport unit in the reinforced district, transport the ventilation zone through the second transport unit to the plastic bottle piece in the zone of heating through the second transport unit, dry by drying unit again, reinforced district and zone of heating all have hot water to cook the plastic bottle piece, can let accumulational plastic piece have a batch by the separation when reinforced district enters into the zone of heating, thereby the maximize realization every plastic bottle piece all can be heated and cooked, can extrude the plastic bottle piece that has cooked through second transport unit, prevent most moisture absorption on the piece, thereby improve the efficiency of drying after improving, finally improve the manufacturing efficiency of plastic part.

The first conveying part comprises a plurality of first driving rods which are rotatably arranged on the frame, a first conveying belt which is arranged on the first driving rods, and a plurality of dividing assemblies which are arranged on the first conveying belt.

Put the reinforced district to abluent piece, first actuating lever rotates, lets first conveyer belt remove, and first conveyer belt can convey plastic bottle piece to the heating district in, and a plurality of subassemblies of dividing let plastic bottle piece have the batch enter into the heating district in, and first conveyer belt is also in hot water, in the in-process of transportation, also can cook the plastic bottle piece on first conveyer belt. Therefore, the cooking time can be prolonged, so that the purity of the plastic sheet is improved, and the strength of the plastic sheet is finally improved.

The dividing assembly comprises a first groove arranged on the first conveying belt, a lug arranged on the first groove and capable of moving up and down, a first spring used for resetting the lug, and a plurality of dividing plates arranged on the feeding area; the projection can enter the first groove; the plurality of dividing plates are arranged in sequence from short to long; the dividing plate near the heating area has a longer length than the dividing plate far from the heating area.

The cleaned plastic bottle fragments are poured onto the shortest dividing plate, namely, the dividing plate farthest from the heating area, the accumulated fragments can be limited by the dividing plate, the fragments at the bottom layer are close to the heating area through the bumps and the first conveying belt, the plastic pieces at the upper half part can reach the bottom layer and are immersed into hot water for cooking, and finally, the fact that each fragment can be cooked and the cooking time is short is ensured, the problem that a pile of plastic bottle fragments are placed in the feeding area is avoided, the cooking time of part of fragments is prolonged, the problem that the plastic pieces cannot be cooked due to the fact that the part of fragments are accumulated on the top surface can be solved, and each plastic bottle fragment can orderly enter the heating area, so that the purity of the plastic pieces is improved, and the strength of the plastic pieces is finally improved. .

In the step of cooking, the cooking temperature is 100-110 ℃; the method is convenient for removing impurities in the plastic, can sterilize the plastic, effectively improves the purity of the plastic, is simple, and improves the economic benefit.

In the bottle blowing step, the pressure of high-pressure gas is 3.2-3.5 MPa; the high-pressure gas entering the bottle blank is dispersed more uniformly, and the plastic effect of the plastic is improved.

The second transportation part comprises a second driving rod which is rotatably arranged on the frame, a first supporting rod which is arranged on the ventilation area and two ends of which are rotatably arranged on the frame, a second supporting rod which two ends of which are arranged on the first driving rod, a supporting ring which is arranged on the second supporting rod, a second transportation belt which is respectively and partially arranged on the second driving rod, the first supporting rod and the supporting ring, a plurality of extrusion components which are arranged on the second transportation belt, and transportation components which are symmetrically arranged on the heating area; the rotation directions of the first driving rod and the second driving rod are opposite, and the rotation directions of the first driving rod and the supporting ring are opposite;

the transport subassembly can be with the plastic bottle piece on the first conveyer belt on the second conveyer belt, the rotation through second actuating lever, first actuating lever, second bracing piece lets the plastic bottle piece in the second conveyer belt transport to the ventilation zone in, and the extrusion subassembly can extrude the moisture between the plastic bottle piece on the second conveyer belt, prevents most moisture absorption on the piece to the efficiency of drying after improving, finally improves the manufacturing efficiency of plastic spare.

The extrusion assembly comprises a through groove arranged on the second conveying belt, a conveying block slidably arranged on the through groove, and an extrusion block arranged on the extrusion block; the first driving rod can push the extrusion block; the first supporting rod can push the transport block; the second driving rod can push the transport block.

When the extrusion piece was extruded by first actuating lever, the extrusion piece was removed toward logical groove direction, and the plastic bottle piece on the extrusion piece will be extruded to let the moisture between piece and the piece extruded, and keep the extrusion state, come out from the zone of heating, when first bracing piece promotes the transportation piece, let the extrusion piece reset, the fast direction of extrusion at this moment is down gradually, let the plastic bottle piece fall into the higher authority in third transportation area, thereby dry.

The carrying assembly comprises a supporting plate symmetrically arranged on the frame, a fixed rod arranged on the supporting plate, a carrying plate rotatably arranged on the fixed rod, a baffle symmetrically arranged on the carrying plate, a plurality of discharge openings arranged on the carrying plate, a driving disc arranged on the second driving rod, a second groove circumferentially arranged along the driving disc, and an arc symmetrically arranged on the second groove; one end of the carrying plate can come out of the second groove through the circular arc; the plastic bottle fragments can enter the extrusion block through the feed opening;

the plastic bottle fragments on the first conveying belt fall onto the carrying plate, the second driving plate rotates, the driving plate also rotates, the carrying plate in the second groove comes out of the second groove through an arc, the driving plate then rotates, one end of the carrying plate enters the second groove again, the reciprocating motion is carried out, the carrying plate swings back and forth around the fixing rod, the plastic bottle fragments on the carrying plate enter the extrusion block of the second conveying belt through the second groove, the carrying plate swings and swings, the plastic fragments arranged on the carrying plate can shake, so that the intervals between the fragments can be enlarged and reduced, hot water flows through, and the cooking is more sufficient, and as the radius is longer, the swinging arc line is longer, the plastic bottle fragments can go to the place with longer swinging arc line, and can fall onto the extrusion plate of the second conveying belt through the discharging port, the baffle can enable the carrying plate to trap the plastic fragments falling from the first conveying belt in the largest area, but also can prevent that the plastic bottle piece can not toward other places landing in the shake, can be accurate fall on the second conveyer belt to guarantee that these plastic bottle pieces can be successfully extruded through extrusion subassembly, thereby accelerate later stoving, finally improve the efficiency of making of plastic bottle.

The drying component comprises a third driving rod, a third groove, a third supporting rod, a third conveying belt, a first vent hole, a fourth conveying belt, a second vent hole and a driving component, wherein the third driving rod is arranged on the ventilation area, two ends of the third driving rod are rotatably arranged on the frame, the third groove is symmetrically arranged on the frame, the third supporting rod is movably arranged on the third groove, the third conveying belt is respectively arranged on the third driving rod and the third supporting rod at two ends, the first vent hole is respectively arranged on the third conveying belt, the fourth conveying belt is sleeved on the first driving rod, the second vent hole is arranged on the fourth conveying belt, and the driving component is used for; the first driving rod and the third driving rod are opposite in rotation direction; the driving assembly comprises a driving plate arranged on the frame, a second spring used for enabling the driving plate to reset, a fourth groove arranged on the driving plate, a driving rod arranged on the fourth groove, and a shaking rope with two ends respectively arranged on the driving rod and the third supporting rod;

the plastic bottle fragments of the second conveying belt enter a third conveying belt in the ventilation area, a third driving rod rotates to enable the third conveying belt to move, so that the plastic bottle fragments in the third conveying belt enter a fourth conveying belt, the plastic bottle fragments on a third conveying spring move to the right through the third driving rod and then fall onto the fourth conveying belt, and the fourth conveying belt moves in the direction opposite to that of the third conveying belt through the first driving rod, so that the drying time is prolonged, and each plastic bottle fragment is ensured to be dried; when the lug moves to the bottom of the first conveying belt, the lug is pushed to enter the first groove, then the lug resets under the action of the first spring when moving to the upper surface of the first conveying belt, the transmission plate is pushed first to move upwards, so that the transmission rod also moves upwards, the shaking rope pulls the third supporting rod to move upwards, the third supporting rod moves upwards and downwards, but the third driving rod does not keep moving and only rotates, so that one end of the third conveying belt shakes upwards and downwards, plastic bottle fragments move upwards and downwards, in this way, the fragments which are overlapped together can be separated, air is contacted with the maximized surface area of the fragments, air flows through the vent holes, water vapor evaporates, and the drying effect is achieved, wherein the uppermost part of the ventilation area is provided with a plurality of ventilation holes, and the hot air moves upwards, make the steam in the ventilation zone up to go away, the air of bottom enters into the ventilation zone, let the air flow, air-dried effect also can appear, moreover, the trilateral frame that all is in ventilation zone, all there is hydrothermal, make the temperature in ventilation zone also higher, through the flow of waste heat with the air, further improvement stoving effect, thereby guarantee the drying of each plastic bottle piece, when improving manufacturing efficiency, can improve the quality of working of plastics again, thereby increase strength.

In summary, the invention has the following advantages: the plastic bottle fragments are extruded, water is rapidly removed, and then the waste heat is utilized for drying, so that energy is saved, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a cross-sectional perspective view of fig. 2 taken along a-a.

Fig. 4 is a cross-sectional perspective view of fig. 2 taken along B-B.

Fig. 5 is a cross-sectional perspective view of fig. 2 taken along C-C.

FIG. 6 is a schematic view of a portion of the structure of the carrier assembly of the present invention.

FIG. 7 is a schematic view of the structure of the support ring of the present invention.

Fig. 8 is an enlarged view of a portion a in fig. 4.

Fig. 9 is an enlarged view at B in fig. 3.

Fig. 10 is an enlarged view at C in fig. 9.

Fig. 11 is an enlarged view at D in fig. 5.

Fig. 12 is an enlarged view at E in fig. 3.

Fig. 13 is a partial structural view of the driving assembly of the present invention.

Detailed Description

A process for making a high strength plastic part comprising the steps of: (1) crushing: crushing the recovered plastic bottles collectively by adopting crushing equipment; (2) cleaning: cleaning the plastic bottle by using cleaning equipment after the plastic bottle is crushed; (3) and (3) cooking: putting the cleaned plastic bottle fragments into a cooking machine for cooking and drying; (4) melting: putting the dried plastic bottle fragments into a melt extruder, and melting the plastic bottle fragments in the melt extruder; (5) die filling: putting the molten plastic into the bottle blank; (6) bottle blowing: blowing high-pressure gas into the bottle blank for bottle blowing operation, and then quickly cooling the bottle blank to finish the processing of the plastic bottle.

As shown in fig. 1 to 13, the cooking machine comprises a frame 1, a charging section 11, a first transporting section 2, a heating section 12, a second transporting section 4, a ventilating section 13, a drying section 7; the feeding area 11 is symmetrically arranged on the frame 1, the first conveying part 2 is arranged on the feeding area 11, the heating area 12 is arranged on the frame 1, the second conveying part 4 is arranged on the heating area 12, the ventilating area 13 is arranged on the frame 1, and the drying part 7 is arranged on the ventilating area 13; the cleaned plastic bottle fragments are transported in the feeding zone 11 via the first transport element 2 to the heating zone 12, the plastic bottle fragments in the heating zone 12 are transported via the second transport element 4 to the ventilation zone 13 via the second transport element 4, and the drying element 7 is dried.

As shown in fig. 4, the first transport unit 2 includes a plurality of first drive bars 21, a first transport belt 22, a plurality of dividing assemblies 3; the plurality of first driving rods 21 are rotatably arranged on the frame 1, the first conveying belt 22 is arranged on the first driving rods 21, and the plurality of dividing assemblies 3 are arranged on the first conveying belt 22; the first driving rod 21 rotates to move the first conveyor belt 22, the first conveyor belt 22 conveys the plastic bottle fragments into the heating area 12, the plurality of dividing assemblies 3 allow the plastic bottle fragments to enter the heating area 12 in batches, the first conveyor belt 22 is also in hot water, and the plastic bottle fragments on the first conveyor belt 22 are cooked during the transportation process.

As shown in fig. 1 and 8, the dividing assembly 3 includes a first groove 31, a projection 32, a first spring 33, and a plurality of dividing plates 34; the first groove 31 is arranged on the first conveying belt 22, the lug 32 can be arranged on the first groove 31 in a vertically movable mode, the first spring 33 is used for enabling the lug 32 to reset, and the plurality of dividing plates 34 are arranged on the charging area 11; the projection 32 can enter the first groove 31; the plurality of division plates 34 are arranged in order from short to long; the length of the dividing plate 34 close to the heating zone 12 is longer than the length of the dividing plate 34 far from the heating zone 12; the first spring 33 returns the projection 32 and the cooperation of the dividing plate 34 with the projection 32 causes excess plastic bottle fragments on the first conveyor belt 22 to be caught for orderly entry into the heating zone 12.

As shown in fig. 7 and 9, the second transportation unit 4 includes a second driving rod 41, a first supporting rod 42, a second supporting rod 43, a supporting ring 44, a second transportation belt 45, a plurality of pressing assemblies 5, and a carrying assembly 6; the second driving rod 41 is rotatably arranged on the frame 1, the first supporting rod 42 is arranged in the ventilation area 13, two ends of the first supporting rod 42 are rotatably arranged on the frame 1, two ends of the second supporting rod 43 are arranged on the first driving rod 21, the supporting ring 44 is arranged on the second supporting rod 43, the second conveying belt 45 is respectively arranged on the second driving rod 41, the first driving rod 21, the first supporting rod 42 and the supporting ring 44, the plurality of extrusion assemblies 5 are arranged on the second conveying belt 45, and the carrying assemblies 6 are symmetrically arranged on the heating area 12; the rotation directions of the first driving rod 21 and the second driving rod 41 are opposite, and the rotation directions of the first driving rod 21 and the supporting ring 44 are opposite; the carrying assembly 6 carries the plastic bottle fragments on the second conveyor belt to the second conveyor belt 45, the squeezing assembly 5 squeezes water between the plastic bottle fragments on the second conveyor belt 45, and the plastic bottle fragments in the second conveyor belt 45 are conveyed to the ventilation area 13 through the rotation of the second driving rod 41, the first driving rod 21 and the second supporting rod 43.

As shown in fig. 10, the pressing assembly 5 includes a through slot 51, a transport block 52, a pressing block 53; a through groove 51 is arranged on the second conveying belt 45, a conveying block 52 is slidably arranged on the through groove 51, and an extrusion block 53 is arranged on the extrusion block 53; the first driving rod 21 can push the pressing block 53; the first support bar 42 can push the transport block 52; the second driving rod 41 can push the transportation block 52, moisture is extruded when the extrusion is extruded by the first driving rod 21, and the extrusion block 53 is reset when the first supporting rod 42 and the second driving rod 41 push the transportation block 52.

As shown in fig. 6, 9 and 11, the carrying assembly 6 includes a supporting plate 61, a fixing rod 62, a carrying plate 63, a baffle 64, a plurality of feed openings 65, a driving disc 66, a second groove 67 and an arc 68; the supporting plate 61 is symmetrically arranged on the frame 1, the fixing rod 62 is arranged on the supporting plate 61, the carrying plate 63 is rotatably arranged on the fixing rod 62, the baffle plate 64 is symmetrically arranged on the carrying plate 63, the plurality of discharging openings 65 are arranged on the carrying plate 63, the driving plate 66 is arranged on the second driving rod 41, the second grooves 67 are circumferentially arranged along the driving plate 66, and the circular arcs 68 are symmetrically arranged on the second grooves 67; one end of the carrying plate 63 can pass through the circular arc 68 and come out of the second groove 67; the plastic bottle fragments can enter the extrusion block 53 through the feed opening 65; the plastic bottle fragments on the first conveyor belt 22 fall onto the carrying plate 63, the second driving plate rotates, the driving plate 66 also rotates, the carrying plate 63 in the second groove 67 comes out of the second groove 67 through the arc 68, the driving plate 66 then rotates, one end of the carrying plate 63 enters the second groove 67 again, the reciprocating is carried out, the carrying plate 63 rocks back and forth around the fixing rod 62, and the plastic bottle fragments on the carrying plate 63 enter the extrusion block 53 of the second conveyor belt 45 through the second groove 67.

As shown in fig. 3, 4, 9 and 12, the drying part 7 includes a third driving rod 71, a third groove 72, a third supporting rod 73, a third conveyor belt 74, a first vent 75, a fourth conveyor belt 76, a second vent 77 and a driving assembly 8; a third driving rod 71 is arranged on the ventilation zone 13, two ends of the third driving rod are rotatably arranged on the frame 1, third grooves 72 are symmetrically arranged on the frame 1, a 72 third supporting rod 73 is movably arranged on the third groove 72, two ends of a third conveying belt 74 are respectively arranged on the third driving rod 71 and the 72 third supporting rod 73, first vent holes 75 are respectively arranged on the third conveying belt 74, a fourth conveying belt 76 is sleeved on the first driving rod 21, a second vent hole 77 is arranged on the fourth conveying belt 76, and a driving assembly 8 is used for shaking the 72 third supporting rod 73; the first drive lever 21 is rotated in the opposite direction to the third drive lever 71; the plastic bottle fragments of the second conveyor belt 45 enter the third conveyor belt 74 in the ventilation area 13, and the third driving rod 71 rotates to move the third conveyor belt 74, so that the plastic bottle fragments in the third conveyor belt 74 enter the fourth conveyor belt 76, and the drying time is prolonged.

As shown in fig. 8, 12 and 13, the driving assembly 8 includes a driving plate 81, a second spring 82, a fourth groove 83, a driving rod 84, a shaking rope 85; the transmission plate 81 is arranged on the frame 1, the second spring 82 is used for resetting the transmission plate 81, the fourth groove 83 is arranged on the transmission plate 81, the transmission rod 84 is arranged on the fourth groove 83, and two ends of the shaking rope 85 are respectively arranged on the transmission rod 84 and the third support rod 73 of 72; the driving plate 81 is pushed by the first protrusion 32, the protrusion 32 is pushed into the first groove 31, when the protrusion 32 is reset under the action of the first spring 33, the driving plate 81 is pushed, the driving plate 81 is moved upwards, the driving rod 84 is also moved upwards, the shaking rope 85 pulls 72 the third supporting rod 73 to move upwards, and finally, the plastic bottle fragments shake on the third conveying belt 74.

Claims

1. A manufacturing process of a high-strength plastic part is characterized by comprising the following steps: the method comprises the following steps:

(1) crushing: crushing the recovered plastic bottles collectively by adopting crushing equipment;

(2) cleaning: cleaning the plastic bottle by using cleaning equipment after the plastic bottle is crushed;

(3) and (3) cooking: putting the cleaned plastic bottle fragments into a cooking machine for cooking and drying;

(4) melting: putting the dried plastic bottle fragments into a melt extruder, and melting the plastic bottle fragments in the melt extruder;

(5) die filling: putting the molten plastic into the bottle blank;

(6) bottle blowing: blowing high-pressure gas into the bottle blank for bottle blowing operation, and then rapidly cooling the bottle blank to finish the processing of the plastic bottle;

wherein the cooking machine in the cooking process comprises a frame (1), a feeding area (11) symmetrically arranged on the frame (1), a first transportation component (2) arranged on the feeding area (11), a heating area (12) arranged on the frame (1), a second transportation component (4) arranged on the heating area (12), a ventilation area (13) arranged on the frame (1), and a drying component (7) arranged on the ventilation area (13); the cleaned plastic bottle fragments are put into a feeding area (11) and transported to a heating area (12) through a first transporting part (2), the plastic bottle fragments in the heating area (12) are transported to a ventilating area (13) through a second transporting part (4), and then are dried through a drying part (7).

2. A process for making a high strength plastic part according to claim 1, wherein: the first conveying part (2) comprises a plurality of first driving rods (21) which are rotatably arranged on the frame (1), a first conveying belt (22) which is arranged on the first driving rods (21), and a plurality of dividing assemblies (3) which are arranged on the first conveying belt (22); the first driving rod (21) rotates to enable the first conveying belt (22) to move, the first conveying belt (22) conveys the plastic bottle fragments to the heating area (12), the plurality of dividing assemblies (3) enable the plastic bottle fragments to enter the heating area (12) in batches, the first conveying belt (22) is also in hot water, and the plastic bottle fragments on the first conveying belt (22) are cooked during the conveying process.

3. A process for making a high strength plastic part according to claim 2, wherein: the dividing assembly (3) comprises a first groove (31) arranged on the first conveying belt (22), a lug (32) which can move up and down and is arranged on the first groove (31), a first spring (33) used for resetting the lug (32), and a plurality of dividing plates (34) arranged on the charging area (11); the projection (32) can enter the first groove (31); the plurality of dividing plates (34) are arranged in sequence from short to long; the dividing plate (34) near the heating zone (12) has a length longer than the dividing plate (34) far from the heating zone (12); the first spring (33) returns the projection (32), and the cooperation of the dividing plate (34) with the projection (32) causes excess plastic bottle fragments on the first conveyor belt (22) to be retained for orderly entry into the heating zone (12).

4. A process for making a high strength plastic part according to claim 1, wherein: in the step of cooking, the cooking temperature is 100-110 ℃; the method is convenient for removing impurities in the plastic, can sterilize the plastic, effectively improves the purity of the plastic, is simple, and improves the economic benefit.

5. A process for making a high strength plastic part according to claim 1, wherein: in the bottle blowing step, the pressure of high-pressure gas is 3.2-3.5 MPa; the high-pressure gas entering the bottle blank is dispersed more uniformly, and the plastic effect of the plastic is improved.

6. A process for making a high strength plastic part according to claim 3, wherein: the second transportation part (4) comprises a second driving rod (41) which is rotatably arranged on the frame (1), a first supporting rod (42) which is arranged in the ventilation area (13) and two ends of which are rotatably arranged on the frame (1), a second supporting rod (43) which two ends of which are arranged on the first driving rod (21), a supporting ring (44) which is arranged on the second supporting rod (43), a second transportation belt (45) which is respectively and partially arranged on the second driving rod (41), the first driving rod (21), the first supporting rod (42) and the supporting ring (44), a plurality of extrusion components (5) which are arranged on the second transportation belt (45), and transportation components (6) which are symmetrically arranged on the heating area (12); the first driving rod (21) and the second driving rod (41) are oppositely rotated, and the first driving rod (21) and the supporting ring (44) are oppositely rotated; the carrying assembly (6) can carry the plastic bottle fragments on the first conveying belt to the second conveying belt (45), the squeezing assembly (5) can squeeze water among the plastic bottle fragments on the second conveying belt (45), and the plastic bottle fragments in the second conveying belt (45) are conveyed to the ventilation area (13) through the rotation of the second driving rod (41), the first driving rod (21) and the second supporting rod (43).

7. A process of making a high strength plastic part according to claim 6, wherein: the extrusion assembly (5) comprises a through groove (51) arranged on the second conveying belt (45), a conveying block (52) slidably arranged on the through groove (51), and an extrusion block (53) arranged on the extrusion block (53); the first driving rod (21) can push the pressing block (53); the first support bar (42) can push the transport block (52); the second driving rod (41) can push the transportation block (52), when the transportation block (52) is pushed by the first driving rod (21) soon, moisture is extruded out, and when the transportation block (52) is pushed by the first supporting rod (42) and the second driving rod (41), the extrusion block (53) is reset.

8. A process for making a high strength plastic part according to claim 9, wherein: the carrying assembly (6) comprises a supporting plate (61) symmetrically arranged on the frame (1), a fixing rod (62) arranged on the supporting plate (61), a carrying plate (63) rotatably arranged on the fixing rod (62), a baffle plate (64) symmetrically arranged on the carrying plate (63), a plurality of discharging openings (65) arranged on the carrying plate (63), a driving plate (66) arranged on the second driving rod (41), second grooves (67) circumferentially arranged along the driving plate (66), and circular arcs (68) symmetrically arranged on the second grooves (67); one end of the carrying plate (63) can pass through the circular arc (68) and come out of the second groove (67); the plastic bottle fragments can enter the extrusion block (53) through the feed opening (65); the plastic bottle fragments on the first conveying belt (22) fall onto the carrying plate (63), the second driving plate rotates, the driving plate (66) also rotates, the carrying plate (63) in the second groove (67) comes out of the second groove (67) through the arc (68), the driving plate (66) then rotates, one end of the carrying plate (63) enters the second groove (67), the reciprocating is carried out in the way, the carrying plate (63) swings back and forth around the fixing rod (62), and the plastic bottle fragments on the carrying plate (63) enter the extrusion block (53) of the second conveying belt (45) through the second groove (67).

9. A process for making a high strength plastic part according to claim 8, wherein: the drying component (7) comprises a third driving rod (71) which is arranged on the ventilation area (13) and two ends of which are rotatably arranged on the frame (1), third grooves (72) which are symmetrically arranged on the frame (1), a third supporting rod (73) which is movably arranged on the third grooves (72), a third conveying belt (74) which two ends of which are respectively arranged on the third driving rod (71) and the third supporting rod (73) of the third grooves (72), first vent holes (75) which are respectively arranged on the third conveying belt (74), a fourth conveying belt (76) which is sleeved on the first driving rod (21), second vent holes (77) which are arranged on the fourth conveying belt (76), and a driving component (8) which is used for shaking the third supporting rod (73) of the third grooves (72); the first driving rod (21) is opposite to the third driving rod (71) in rotation direction; the plastic bottle fragments of the second conveying belt (45) enter a third conveying belt (74) in the ventilation area (13), and a third driving rod (71) rotates to enable the third conveying belt (74) to move, so that the plastic bottle fragments in the third conveying belt (74) enter a fourth conveying belt (76), and the drying time is prolonged.

10. A process for making a high strength plastic part according to claim 9, wherein: the driving assembly (8) comprises a driving plate (81) arranged on the frame (1), a second spring (82) used for enabling the driving plate (81) to reset, a fourth groove (83) arranged on the driving plate (81), a driving rod (84) arranged on the fourth groove (83), and a shaking rope (85) with two ends respectively arranged on the driving rod (84) and the third supporting rod (73) of the driving rod (72); the transmission plate (81) is pushed by the first protruding block (32), the protruding block (32) is pushed to enter the first groove (31), when the protruding block (32) resets under the action of the first spring (33), the transmission plate (81) is pushed, the transmission plate (81) moves upwards, the transmission rod (84) also moves upwards, the shaking rope (85) pulls the third supporting rod (73) to move upwards, and finally the plastic bottle fragments shake on the third conveying belt (74).