CN113059821A - Production system and process of green recyclable plastic packaging box - Google Patents

Abstract

The invention provides a production system of a green recyclable plastic packing box, which comprises a forming device; the forming device comprises a forming mechanism, and the forming mechanism comprises an upper forming assembly and a lower forming assembly; the upper molding assembly comprises a plurality of side wall molding parts and a bottom wall molding part; a plurality of lateral wall shaping portions are adjacent in proper order and set up, and diapire shaping portion connects in the upper surface of a plurality of lateral wall shaping portions, is equipped with connecting portion between each adjacent lateral wall shaping portion, and the both ends of lateral wall shaping portion articulate respectively on each connecting portion, form the fashioned shaping chamber of thermoplastic sheet body between a plurality of lateral wall shaping portions, and lower shaping subassembly is in the below in shaping chamber. The invention has the advantages that through the arrangement of the movable upper forming assembly, the demoulding process does not need mechanical hands, the cost for producing the plastic packing box is reduced, meanwhile, the structure of the device for producing the plastic packing box is simpler, and the occurrence rate of mechanical faults is reduced. The invention also provides a production process of the green recyclable plastic packing box.

Description

Production system and process of green recyclable plastic packaging box

Technical Field

The invention relates to the technical field of plastic packing boxes, in particular to a production system and a production process of a green recyclable plastic packing box.

Background

The plastic packing box includes: plastic turnover boxes, food plastic turnover boxes, beverage plastic turnover boxes, plastic logistics turnover boxes, anti-static plastic turnover boxes and the like belong to the types of packaging and packaging materials.

Most of the manufacturing methods of the plastic packing boxes are formed by one-time injection molding, and after the plastic packing boxes are formed, the plastic packing boxes formed on the male dies need to be taken down by using a manipulator, so that the structure of a production device for producing the plastic packing boxes is complex, and the cost for producing the plastic packing boxes is increased.

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

Disclosure of Invention

An object of the embodiments of the present invention is to provide a production system for green recyclable plastic packaging boxes, so as to solve the problems that a manipulator is required to take down a plastic packaging box on a male mold, which is mentioned in the background art, so that a production apparatus for producing plastic packaging boxes is complex in structure, and the cost for producing plastic packaging boxes is increased.

The two purposes of the embodiment of the invention are to provide a production process of a green recyclable plastic packing box, wherein the thermoplastic sheet is molded by an upper molding assembly and a lower molding assembly of a molding mechanism to form the plastic packing box, and a plurality of side wall molding parts of the upper molding assembly realize the automatic demolding process of the plastic packing box, so that the efficiency of producing the plastic packing box is improved, and the cost of producing the packing box is reduced.

In order to achieve the purpose, the invention adopts the following technical scheme:

a production system of a green recyclable plastic packing case comprises a molding device for molding thermoplastic sheet bodies; the forming device comprises a forming mechanism for forming the thermoplastic sheet body, and the forming mechanism comprises an upper forming assembly and a lower forming assembly for forming the thermoplastic sheet body; the upper forming assembly comprises a plurality of side wall forming parts for forming the side walls of the plastic packing box and a bottom wall forming part for forming the bottom wall of the packing box; it is a plurality of lateral wall shaping portion is adjacent setting in proper order, diapire shaping portion connects in the upper surface of a plurality of lateral wall shaping portions, and is each adjacent be equipped with connecting portion between the lateral wall shaping portion, the both ends of lateral wall shaping portion articulate respectively on each connecting portion, and is a plurality of form the fashioned molding cavity of formation thermoplastic sheet body between the lateral wall shaping portion, lower shaping subassembly is in the below in molding cavity.

Furthermore, the inner side surface of the side wall forming part is provided with a first protrusion and a second protrusion which are arranged at equal intervals along the length direction of the side wall forming part, and the first protrusion is positioned above the second protrusion.

Furthermore, the upper forming assembly also comprises a rotation driving device for driving each side wall forming part to rotate outwards.

Further, the lower forming component comprises a supporting part for supporting the thermoplastic sheet, a lower forming part extending into the forming cavity, and a first lifting driving device for driving the lower forming part to lift; the upper surface of the supporting part forms an accommodating groove, and the lower forming part is connected in the accommodating groove in a sliding manner.

Furthermore, the forming mechanism also comprises a temperature changing device for heating and cooling the forming cavity.

Further, the temperature changing device comprises a heating component for heating the forming cavity and a cooling component for cooling the forming cavity.

Further, the forming mechanism further comprises a second lifting driving device for driving the upper forming assembly to lift.

Further, the molding device also comprises a spraying mechanism for spraying the release agent into the molding cavity; the forming mechanism further comprises a first movement driving device for driving the upper forming assembly to move between the lower forming assembly and the spraying mechanism.

Further, the spraying mechanism comprises a spraying assembly for spraying the release agent to the side wall forming part and the bottom wall forming part, and a third lifting driving device for driving the spraying assembly to lift.

Further, the spray assembly includes a first spray gun directed toward each of the side wall forming portions and a second spray gun directed toward the bottom wall forming portion.

Further, the device comprises a spiral extrusion device for heating and extruding the thermoplastic material and a rolling device for rolling and flattening the extruded material.

Further, the screw extrusion device comprises a screw extruder main body, and the rolling device comprises a rolling mechanism for rolling the material and an output mechanism for outputting the material; the screw extruder main body is provided with an extrusion port for extruding materials, the output mechanism is provided with an input end for inputting materials, and the extrusion port of the screw extruder main body is communicated with the input end of the output mechanism.

Further, the output mechanism comprises a material accommodating part for accommodating materials; the material holding part is provided with a first holding cavity, the first holding cavity comprises a first feeding hole and a first discharging hole, the first feeding hole is connected with an extrusion port of the screw extruder main body, a discharging end of the first discharging hole is arranged downwards, and the rolling mechanism is located below the discharging end of the first discharging hole.

Further, the rolling mechanism comprises a conveying part for conveying the materials and a rolling part for rolling the materials; the rolling part is positioned on one side of the output end of the conveying part.

Further, the conveying part includes a conveying roller and a first conveying motor; the conveying roller is arranged below the first discharge hole, and the output end of the first conveying motor is connected with the conveying roller.

Further, the rolling part includes a first rolling member, a second rolling member, and a third rolling member; the first rolling part comprises a first rolling roller and a first rolling motor, the axis of the first rolling roller is parallel to the axis of the conveying roller, a first gap for materials to pass through is formed between the first rolling roller and the conveying roller, and the output end of the first rolling motor is connected with the first rolling roller; the second rolling part comprises a second rolling roller, a third rolling roller, a second rolling motor and a third rolling motor; the axes of the second rolling roller and the third rolling roller are arranged in parallel with the axis of the conveying roller, the second rolling roller is positioned above the third rolling roller, a second gap for materials to pass through is formed between the second rolling roller and the third rolling roller, the output end of the second rolling motor is connected with the second rolling roller, and the output end of the third rolling motor is connected with the third rolling roller; the third rolling part comprises a fourth rolling roller, a fifth rolling roller, a fourth rolling motor and a fifth rolling motor; the axis of fourth rolling roller and fifth rolling roller and the axis parallel arrangement of conveying roller, the fourth rolling roller is in the top of fifth rolling roller, the fourth rolling roller has the third clearance that the material passed between the roller with the fifth rolling roller, the fourth rolls the output of motor and the fourth rolling roller links together, the output that the fifth rolled the motor and the fifth rolling roller links together.

Further, the rolling mechanism also comprises a material conveying belt for conveying the material and a cooling part for cooling and solidifying the material; the material conveying belt is positioned on one side of the output end of the third rolling part.

Further, the cooling portion includes a cooling outlet; the output end of the cooling output port faces the upper surface of the material.

Further, the device comprises a cutting device for cutting the material to form the thermoplastic sheet body and a transfer device for transferring the thermoplastic sheet body to the lower forming assembly.

Further, the cutting device comprises a cutting saw disc for cutting the material and a moving air cylinder for driving the cutting saw disc to move along the width direction of the material.

Further, transfer device carries out the fourth lift drive arrangement that adsorbs including the absorption portion that adsorbs to the thermoplastic sheet body, drive absorption portion goes up and down to and the second that the drive absorption portion removed between material conveyer belt and lower shaping subassembly removes drive arrangement.

Further, still include the clout recovery unit that retrieves the clout.

Further, clout recovery unit is including retrieving the box, the upper surface of retrieving the box forms the second feed inlet, transfer device is still including the rotatory rotary drive device of drive adsorption portion, retrieve one side of adsorption portion is located to the box.

A production process of a green recyclable plastic packing box comprises the following steps:

(1) heating and extruding a thermoplastic material;

(2) rolling and flattening the extruded material to form a continuous thermoplastic body;

(3) cutting the thermoplastic body to form a thermoplastic sheet;

(4) and forming the thermoplastic sheet to form the plastic packaging box.

Further, in the step (4), the thermoplastic sheet is placed between the upper forming component and the lower forming component, the thermoplastic sheet is located on the upper surface of the supporting part, the second lifting driving device drives the upper forming component to move downwards, so that the lower surfaces of the side wall forming parts are in contact with the upper surface of the thermoplastic sheet, the thermoplastic sheet covers the forming cavity and the accommodating groove, the heating component heats the forming cavity, the first lifting driving device drives the lower forming part to ascend to push the thermoplastic sheet into the forming cavity, the thermoplastic sheet is heated, when the lower forming part is completely located in the forming cavity, the thermoplastic sheet is heated and softened and then located in the lower forming part and gaps between the side wall forming parts and the bottom wall forming part, the thermoplastic sheet is plasticized and formed, the gaps between the lower forming part and the side wall forming parts are in the shape of thermoplastic sheet re-forming, and the cooling component cools the forming cavity after a certain time, cooling and solidifying the thermoplastic sheet to form the plastic packaging box; the first lifting driving device drives the lower forming part to move downwards, the plastic packaging box is connected in the forming cavity of the upper forming assembly and attached to the inner side surfaces of the side wall forming part and the bottom wall forming part, and the rotating driving device drives the side wall forming parts to rotate outwards, so that the side wall forming part is separated from the plastic packaging box, and the demolding process is completed.

Further, in the step (1), the thermoplastic material is heat extruded through the screw extruder body of the screw extrusion device.

Further, in step (2), the thermoplastic material is spirally extruded into the material accommodating part of the output mechanism, the material is output to the conveying part of the rolling mechanism from the first discharge port, the rolling part rolls the material into a thermoplastic body with uniform and continuous thickness, the thermoplastic body is conveyed by the material conveying belt, and the cooling part cools and solidifies the thermoplastic body.

Further, in the step (3), the thermoplastic body is cut equally by the cutting device to form thermoplastic sheet bodies with equal size, the second moving driving device of the transfer device drives the adsorption part to move to the upper part of the thermoplastic sheet bodies, the fourth lifting driving device drives the adsorption part to descend to adsorb the thermoplastic sheet bodies and move to the upper part of the lower forming assembly, and the thermoplastic sheet bodies are placed on the upper part of the lower forming assembly.

After adopting the structure, the production system of the green recyclable plastic packing box has at least the following beneficial effects:

the thermoplastic sheet body is placed between an upper forming component and a lower forming component, the thermoplastic sheet body is positioned on the upper surface of a supporting part, a second lifting driving device drives the upper forming component to move downwards, the lower surfaces of a plurality of side wall forming parts are in contact with the upper surface of the thermoplastic sheet body, the thermoplastic sheet body covers a forming cavity and a containing groove, the heating component heats the forming cavity, a first lifting driving device drives the lower forming part to ascend to push the thermoplastic sheet body into the forming cavity, the thermoplastic sheet body is heated, when the lower forming part is completely positioned in the forming cavity, the thermoplastic sheet body is heated and softened and then positioned in the lower forming part and gaps between the side wall forming parts and a bottom wall forming part and is plasticized and formed, the gaps between the lower forming part and the side wall forming parts and the bottom wall forming part are in the shape of the thermoplastic sheet body for re-forming, and the cooling component cools the forming cavity after, cooling and solidifying the thermoplastic sheet to form the plastic packaging box; the first lifting driving device drives the lower forming part to move downwards, the plastic packaging box is connected in a forming cavity of the upper forming assembly and attached to the inner side surfaces of the side wall forming part and the bottom wall forming part, and the rotating driving device drives the side wall forming parts to rotate outwards so that the side wall forming part is separated from the plastic packaging box, and the demolding process is completed; the invention has the advantages that through the arrangement of the movable upper forming assembly, the demoulding process does not need mechanical hands, the cost for producing the plastic packing box is reduced, meanwhile, the structure of the device for producing the plastic packing box is simpler, and the occurrence rate of mechanical faults is reduced.

The invention also provides a production process of the green recyclable plastic packing box, the thermoplastic sheet is molded through the upper molding assembly and the lower molding assembly of the molding mechanism to form the plastic packing box, and the automatic demolding process of the plastic packing box is realized through the plurality of side wall molding parts of the upper molding assembly, so that the efficiency of producing the plastic packing box is improved, and the cost of producing the packing box is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the production system and process of a green recyclable plastic packing case according to the present invention;

FIG. 2 is a schematic structural view of a forming mechanism of the present invention;

FIG. 3 is a schematic structural view of a sidewall forming portion according to the present invention;

fig. 4 is a schematic view of the connection structure of the screw extrusion device, the rolling mechanism and the output mechanism of the present invention.

In the figure: the device comprises a forming mechanism 1, an upper forming component 11, a lower forming component 12, a side wall forming part 111, a bottom wall forming part 112, a connecting part 113, a first protrusion 1111, a second protrusion 1112, a bearing part 121, a second lifting driving device 13, a spraying mechanism 2, a first moving driving device 14, a spiral extruding device 3, a rolling device 4, a rolling mechanism 41, an output mechanism 42, a material accommodating part 421, a first accommodating cavity 422, a first feeding hole 4221, a first discharging hole 4222, a conveying part 411, a rolling part 412, a first rolling part 4121, a second rolling part 4122, a third rolling part 4123, a material conveying belt 413, a cooling part 414, a cutting device 5, a transfer device 6, a cutting saw disc 51, a moving cylinder 52, an adsorption part 61, a fourth lifting driving device 62, a second moving driving device 63, a residual material recycling device 7, a recycling box 71 and a rotating driving device 64.

Detailed Description

In order to further explain the technical solution of the present invention, the following detailed description is given by way of specific examples.

As shown in fig. 1 to 4, the system for producing a green recyclable plastic packing case of the present invention includes a molding device for molding a thermoplastic sheet; the forming device comprises a forming mechanism 1 for forming the thermoplastic sheet, wherein the forming mechanism 1 comprises an upper forming assembly 11 and a lower forming assembly 12 for forming the thermoplastic sheet; the upper forming assembly 11 comprises a plurality of side wall forming portions 111 forming the side walls of the plastic container, and a bottom wall forming portion 112 forming the bottom wall of the container; the plurality of side wall forming parts 111 are sequentially and adjacently arranged, the bottom wall forming part 112 is connected to the upper surfaces of the plurality of side wall forming parts 111, a connecting part 113 is arranged between every two adjacent side wall forming parts 111, two ends of each side wall forming part 111 are respectively hinged to the connecting parts 113, a forming cavity for forming thermoplastic sheet bodies is formed among the plurality of side wall forming parts 111, and the lower forming component 12 is located below the forming cavity.

Thus, a thermoplastic sheet is placed between the upper forming component 11 and the lower forming component 12, the thermoplastic sheet is located on the upper surface of the supporting part 121, the second lifting driving device 13 drives the upper forming component 11 to move downwards, so that the lower surfaces of the side wall forming parts 111 are in contact with the upper surface of the thermoplastic sheet, the thermoplastic sheet covers the forming cavity and the accommodating groove, the heating component heats the forming cavity, the first lifting driving device drives the lower forming part to lift up to push the thermoplastic sheet into the forming cavity, the thermoplastic sheet is heated, when the lower forming part is completely located in the forming cavity, the thermoplastic sheet is heated and softened and then is located in the lower forming part and gaps between the side wall forming parts 111 and the bottom wall forming part 112, and is plasticized and formed, the gaps between the lower forming part and the side wall forming parts 111 and the bottom wall forming part 112 are in the shape of the thermoplastic sheet formed again, and the cooling component cools the forming cavity after a certain time, cooling and solidifying the thermoplastic sheet to form the plastic packaging box; the first lifting driving device drives the lower forming part to move downwards, the plastic packaging box is connected in a forming cavity of the upper forming assembly 11 and attached to the inner side surfaces of the side wall forming part 111 and the bottom wall forming part 112, and the rotating driving device drives the side wall forming parts 111 to rotate outwards, so that the side wall forming part 111 is separated from the plastic packaging box, and the demolding process is completed; the arrangement of the movable upper forming assembly 11 in the invention ensures that the demoulding process does not need mechanical hands, reduces the cost for producing the plastic packing box, simplifies the structure of a device for producing the plastic packing box and reduces the occurrence rate of mechanical faults. Specifically, the material of the thermoplastic sheet is either PP or PE.

Preferably, the inner side surface of the sidewall forming part 111 forms a first protrusion 1111 and a second protrusion 1112 which are equally spaced along the length direction of the sidewall forming part 111, and the first protrusion 1111 is located above the second protrusion 1112. Specifically, the side surfaces of the first protrusion and the second protrusion are attached to the side surface of the lower molding part; the thermoplastic sheet is heated further within the mold cavity to cause the thermoplastic to become liquid and fill the gap formed by the lower mold portion and the mold cavity, and the first protrusion 1111 and the second protrusion 1112 form a hole in the side of the plastic packaging container after the plastic packaging container is molded.

Preferably, the upper molding assembly 11 further includes a rotation driving device for driving each sidewall molding portion 111 to rotate outwardly. The rotation driving device drives each side wall forming part 111 to rotate outwards, so that the side wall forming parts 111 are separated from the plastic packaging box, and the demolding process is completed. In particular, the rotary drive is a motor drive.

Preferably, the lower forming assembly 12 includes a supporting portion 121 for supporting the thermoplastic sheet, a lower forming portion extending into the forming cavity, and a first elevation driving device for driving the lower forming portion to ascend and descend; the upper surface of the supporting portion 121 forms an accommodating groove, and the lower forming portion is slidably connected in the accommodating groove. The thermoplastic sheet is placed on the supporting part 121 and covers the accommodating groove, the upper forming assembly 11 moves downwards to be attached to the upper surface of the thermoplastic sheet, the lower forming part is driven by the first lifting driving device to send the thermoplastic sheet into the forming cavity and heat the thermoplastic sheet, so that the thermoplastic sheet is plasticized and formed in gaps among the lower forming part, the plurality of side wall forming parts 111 and the bottom wall forming part 112, and then the thermoplastic sheet is cooled by the cooling assembly to be cooled and solidified to form the plastic packaging box. Specifically, the first lifting driving device is driven by an air cylinder.

Preferably, in order to heat and cool the forming cavity, the forming mechanism 1 further comprises a temperature changing device for heating and cooling the forming cavity.

Preferably, to facilitate heating and cooling of the forming cavity, the temperature varying means comprises a heating assembly for heating the forming cavity and a cooling assembly for cooling the forming cavity.

Preferably, in order to improve the production efficiency, the forming mechanism 1 further comprises a second lifting driving device 13 for driving the upper forming assembly 11 to lift. Specifically, the second lifting driving device 13 is driven by a cylinder.

Preferably, in order to improve the demolding efficiency, the molding device further comprises a spraying mechanism 2 for spraying the demolding agent into the molding cavity; the forming mechanism 1 further comprises a first movement driving device 14 for driving the upper forming assembly 11 to move between the lower forming assembly 12 and the spraying mechanism 2. Before molding, the first moving driving device 14 drives the upper molding assembly 11 to move above the spraying mechanism 2, and the third lifting driving device drives the spraying assembly to spray the release agent on the inner side surfaces of the side wall molding part 111 and the bottom wall molding part 112; specifically, the first movement driving device 14 is a cylinder drive.

Preferably, in order to improve the release agent spraying efficiency, the spraying mechanism 2 includes a spraying member for spraying the release agent to the side wall forming portion 111 and the bottom wall forming portion 112, and a third elevation driving means for driving the spraying member to be elevated. Specifically, the third lifting driving device is driven by a cylinder.

Preferably, in order to improve the release agent spraying efficiency, the spray assembly includes a first spray gun facing each of the side wall forming portions 111, and a second spray gun facing the bottom wall forming portion 112.

Preferably, in order to improve the degree of automation and production efficiency, a screw extrusion device 3 for heating and extruding the thermoplastic material and a rolling device 4 for rolling and flattening the extruded material are further included. The thermoplastic material is heated and extruded by a screw extrusion device 3, and the rolling device 4 rolls the material into a thermoplastic body with uniform and continuous thickness.

Preferably, the screw extrusion device 3 comprises a screw extruder body, the rolling device 4 comprises a rolling mechanism 41 for rolling the material, and an output mechanism 42 for outputting the material; the screw extruder main body is provided with an extrusion port for extruding materials, the output mechanism 42 is provided with an input end for inputting materials, and the extrusion port of the screw extruder main body is communicated with the input end of the output mechanism 42. The screw extruder body extrudes the material and inputs the material into the output mechanism 42, the output mechanism 42 outputs the material, and the rolling mechanism 41 rolls and flattens the material to form a continuous thermoplastic body with uniform thickness.

Preferably, the output mechanism 42 includes a material holding part 421 for holding the material; the material accommodating portion 421 has a first accommodating cavity 422, the first accommodating cavity 422 includes a first feeding port 4221 and a first discharging port 4222, the first feeding port 4221 is connected with an extrusion port of the screw extruder body, a discharging end of the first discharging port 4222 is arranged downward, and the rolling mechanism 41 is located below the discharging end of the first discharging port 4222. The thermoplastic material is spirally extruded into the first accommodating cavity 422 of the material accommodating part 421 through the main body of the screw extruder, and the material is output to the rolling mechanism 41 from the first discharge port 4222 to be rolled and flattened; specifically, the discharge width of the first discharge port 4222 is equal to the thickness dimension of the material to be molded, and the length dimension of the first discharge port 4222 is equal to the width dimension of the material to be molded.

Preferably, the rolling mechanism 41 includes a conveying portion 411 for conveying the material, and a rolling portion 412 for rolling the material; the crushing unit 412 is located at one side of the output end of the conveying unit 411. The material is discharged from the first discharge port 4222 to the conveying part 411 of the rolling mechanism 41, and the rolling part 412 rolls the material into a thermoplastic body having a uniform and continuous thickness.

Preferably, the conveying part 411 includes a conveying roller and a first conveying motor; the conveying roller is arranged below the first discharge hole 4222, and the output end of the first conveying motor is connected with the conveying roller. First conveying motor drive conveying roller rotates, drives the material and rotates the position that rolls portion 412 when the material is exported gradually on the conveying roller, rolls the material gradually into the even continuous thermoplastic body of thickness. Specifically, the conveying part also comprises an air cooler for performing primary shaping on the materials on the conveying roller; the conveying rollers are cooled through the air cooler, so that the materials are preliminarily shaped after being in contact with the conveying rollers, and the materials are conveniently rolled and conveyed subsequently.

Preferably, the crush 412 includes a first crush 4121, a second crush 4122 and a third crush 4123; the first rolling part 4121 comprises a first rolling roller and a first rolling motor, the axis of the first rolling roller is parallel to the axis of the conveying roller, a first gap for materials to pass through is formed between the first rolling roller and the conveying roller, and the output end of the first rolling motor is connected with the first rolling roller; the second rolling member 4122 includes a second rolling roller, a third rolling roller, a second rolling motor and a third rolling motor; the axes of the second rolling roller and the third rolling roller are parallel to the axis of the conveying roller, the second rolling roller is positioned above the third rolling roller, a second gap for materials to pass through is arranged between the second rolling roller and the third rolling roller, the output end of the second rolling motor is connected with the second rolling roller, and the output end of the third rolling motor is connected with the third rolling roller; the third rolling member 4123 includes a fourth rolling roller, a fifth rolling roller, a fourth rolling motor and a fifth rolling motor; the axis of fourth rolling roller and fifth rolling roller and the axis parallel arrangement of conveying roller, the fourth rolling roller is in the top of fifth rolling roller, has the third clearance that the material passed between fourth rolling roller and the fifth rolling roller, and the output and the fourth rolling roller of fourth rolling motor link together, and the output and the fifth rolling roller of fifth rolling motor link together. The first rolling motor drives the first rolling roller to rotate, the auxiliary conveying roller conveys materials and rolls the materials, and the materials penetrate through the first gap, the second gap and the third gap to form a thermoplastic body with uniform thickness.

Preferably, the rolling mechanism 41 further includes a material conveying belt 413 for conveying the material, and a cooling portion 414 for cooling and shaping the material; the material conveyer 413 is positioned at one side of the output end of the third rolling member 4123. The material conveyer belt 413 conveys the material, and cools the material through the cooling part 414 to solidify the material for subsequent forming.

Preferably, the cooling portion 414 includes a cooling outlet; the output end of the cooling output port is arranged towards the upper surface of the material. And outputting cold air through a cooling output port to cool and solidify the material.

Preferably, a cutting device 5 for cutting the material to form thermoplastic sheets and a transfer device 6 for transferring the thermoplastic sheets to the lower forming assembly 12 are also included. The thermoplastic body is equally cut by the cutting device 5 to form thermoplastic sheet bodies with equal size, and then the transfer device 6 transfers the thermoplastic sheet bodies from the material conveying belt 413 to the forming mechanism 1 to carry out forming processing on the thermoplastic sheet bodies to form the plastic packaging box.

Preferably, in order to improve the cutting efficiency, the cutting device 5 includes a cutting saw disc 51 for cutting the material, and a moving cylinder 52 for driving the cutting saw disc 51 to move in the width direction of the material.

Preferably, the transfer device 6 includes an adsorption portion 61 for adsorbing the thermoplastic sheet, a fourth elevation driving device 62 for driving the adsorption portion 61 to ascend and descend, and a second movement driving device 63 for driving the adsorption portion 61 to move between the material conveying belt 413 and the lower molding assembly 12. The second moving driving device 63 drives the adsorption part 61 to move to the upper part of the thermoplastic sheet, and the fourth lifting driving device 62 drives the adsorption part 61 to descend to adsorb the thermoplastic sheet, and moves to the upper part of the lower forming assembly 12, so that the thermoplastic sheet is placed above the lower forming assembly 12. Specifically, the suction unit 61 generates a negative pressure on the contact surface with the thermoplastic sheet body by the vacuum suction principle to suck the thermoplastic sheet body, the fourth elevation driving device 62 is driven by an air cylinder, and the second movement driving device 63 is driven by an air cylinder.

Preferably, in order to improve the utilization rate of the excess materials, the device also comprises an excess material recovery device 7 for recovering the excess materials.

Preferably, the remainder recovering device 7 includes a recovering box 71, the upper surface of the recovering box 71 forms a second feeding hole, the transferring device 6 further includes a rotation driving device 64 for driving the adsorbing portion 61 to rotate, and the recovering box 71 is disposed at one side of the adsorbing portion 61. After the upper forming assembly 11 and the lower forming assembly 12 form the thermoplastic sheet, the excess material on the supporting portion 121 is adsorbed by the adsorbing portion 61, and the rotary driving device 64 drives the adsorbing portion 61 to rotate above the second feeding hole, so that the excess material falls into the recycling box 71 from the second feeding hole, and the excess material is convenient to recycle; specifically, the rotation driving device 64 is a cylinder drive.

Preferably, the plastic packing box conveying device further comprises a conveying device for conveying the plastic packing boxes out.

A production process of a green recyclable plastic packing box comprises the following steps:

(1) heating and extruding a thermoplastic material;

(2) rolling and flattening the extruded material to form a continuous thermoplastic body;

(3) cutting the thermoplastic body to form a thermoplastic sheet;

(4) and forming the thermoplastic sheet to form the plastic packaging box.

Like this, last forming assembly 11 and lower forming assembly 12 through forming mechanism 1 shape the thermoplasticity lamellar body, form the plastic packaging box, go up a plurality of lateral wall shaping portions 111 of forming assembly 11 and realize the process to the automatic drawing of patterns of plastic packaging box, improve the efficiency of production plastic packaging box, reduce the cost of production packaging box.

Preferably, in step (4), a thermoplastic sheet is placed between the upper forming assembly 11 and the lower forming assembly 12, the thermoplastic sheet is located on the upper surface of the supporting portion 121, the second lifting driving device 13 drives the upper forming assembly 11 to move downward, so that the lower surfaces of the plurality of side wall forming portions 111 contact with the upper surface of the thermoplastic sheet, the thermoplastic sheet covers the forming cavity and the accommodating groove, the heating assembly heats the forming cavity, the first lifting driving device drives the lower forming portion to ascend to push the thermoplastic sheet into the forming cavity, the thermoplastic sheet is heated, when the lower forming portion is completely located in the forming cavity, the thermoplastic sheet is heated and softened and then located in the lower forming portion and the gap between the plurality of side wall forming portions 111 and the bottom wall forming portion 112, and is plasticized and formed, the gap between the lower forming portion and the plurality of side wall forming portions 111 and the bottom wall forming portion 112 is the shape of the thermoplastic sheet formed again, after a certain time, the cooling assembly cools the molding cavity to cool and solidify the thermoplastic sheet to form the plastic packaging box; the first lifting driving device drives the lower forming part to move downwards, the plastic packaging box is connected in the forming cavity of the upper forming assembly 11 and attached to the inner side surfaces of the side wall forming part 111 and the bottom wall forming part 112, and the rotating driving device drives the side wall forming parts 111 to rotate outwards, so that the side wall forming part 111 is separated from the plastic packaging box, and the demolding process is completed.

Preferably, in step (1), the thermoplastic material is heat extruded through the screw extruder body of the screw extrusion device 3.

Preferably, in the step (2), the thermoplastic material is spirally extruded into the material holding part 421 of the output mechanism 42 and is output from the first discharge port 4222 to the conveying part 411 of the rolling mechanism 41, the rolling part 412 rolls the material into a thermoplastic body with a uniform and continuous thickness and the thermoplastic body is conveyed by the material conveying belt 413, and the cooling part 414 performs the cooling and shaping process on the thermoplastic body.

Preferably, in the step (3), the thermoplastic body is cut equally by the cutting device 5 to form thermoplastic sheet bodies with equal size, then the second moving driving device 63 of the transfer device 6 drives the adsorption part 61 to move to the upper part of the thermoplastic sheet bodies, the fourth lifting driving device 62 drives the adsorption part 61 to descend to adsorb the thermoplastic sheet bodies and move to the upper part of the lower forming assembly 12, and the thermoplastic sheet bodies are placed on the upper part of the lower forming assembly 12.

The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.

Claims (10)

1. The production system of the green recyclable plastic packing box is characterized in that: comprises a forming device for forming the thermoplastic sheet; the forming device comprises a forming mechanism for forming the thermoplastic sheet body, and the forming mechanism comprises an upper forming assembly and a lower forming assembly for forming the thermoplastic sheet body; the upper forming assembly comprises a plurality of side wall forming parts for forming the side walls of the plastic packing box and a bottom wall forming part for forming the bottom wall of the packing box; it is a plurality of lateral wall shaping portion is adjacent setting in proper order, diapire shaping portion connects in the upper surface of a plurality of lateral wall shaping portions, and is each adjacent be equipped with connecting portion between the lateral wall shaping portion, the both ends of lateral wall shaping portion articulate respectively on each connecting portion, and is a plurality of form the fashioned molding cavity of formation thermoplastic sheet body between the lateral wall shaping portion, lower shaping subassembly is in the below in molding cavity.

2. The system for producing green recyclable plastic containers as claimed in claim 1, wherein: the inner side surface of the side wall forming part is provided with a first bulge and a second bulge which are arranged at equal intervals along the length direction of the side wall forming part, and the first bulge is positioned above the second bulge.

3. The system for producing green recyclable plastic containers as claimed in claim 2, wherein: the upper forming assembly further comprises a rotation driving device for driving each side wall forming part to rotate outwards.

4. The system for producing green recyclable plastic containers as claimed in claim 3, wherein: the lower molding component comprises a supporting part for supporting the thermoplastic sheet body, a lower molding part extending into the molding cavity, and a first lifting driving device for driving the lower molding part to lift; the upper surface of the supporting part forms an accommodating groove, and the lower forming part is connected in the accommodating groove in a sliding manner.

5. The system for producing green recyclable plastic containers as claimed in claim 4, wherein: the forming mechanism also comprises a temperature changing device for heating and cooling the forming cavity.

6. The system for producing green recyclable plastic containers as claimed in claim 5, wherein: the temperature changing device comprises a heating component for heating the forming cavity and a cooling component for cooling the forming cavity.

7. The system for producing green recyclable plastic containers as claimed in claim 6, wherein: the forming mechanism further comprises a second lifting driving device for driving the upper forming assembly to lift.

8. A green recyclable plastic packaging case production system as claimed in any one of claims 1 to 7 wherein: the molding device also comprises a spraying mechanism for spraying the release agent into the molding cavity; the forming mechanism further comprises a first movement driving device for driving the upper forming assembly to move between the lower forming assembly and the spraying mechanism.

9. The system for producing green recyclable plastic containers as claimed in claim 8, wherein: the spraying mechanism comprises a spraying assembly for spraying a release agent to the side wall forming part and the bottom wall forming part and a third lifting driving device for driving the spraying assembly to lift.

10. The system for producing green recyclable plastic containers as claimed in claim 9, wherein: the spray assembly includes a first spray gun directed toward each of the side wall forming portions and a second spray gun directed toward the bottom wall forming portion.

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