A forming device and forming method for producing EPP packaging boxes

Abstract

The present invention discloses a forming device and forming method for producing EPP packaging boxes, and relates to the technical field of EPP packaging box production. The forming device and forming method for producing EPP packaging boxes, through the mutual cooperation between a foaming cylinder mechanism, an internal gear ring, a feeding mechanism, and a driving rod mechanism, can simultaneously drive the foaming cylinder mechanism and the feeding mechanism to work together by activating the driving rod mechanism. During the operation of the feeding mechanism, a set amount of EPP raw material particles are intermittently added to the foaming cylinder mechanism, and the foaming agent in the liquid storage barrel is intermittently sucked into the foaming cylinder mechanism. During the operation of the foaming cylinder mechanism, the EPP raw material particles and the foaming agent inside can be automatically stirred, so that the EPP raw material particles and the foaming agent can be fully mixed, thereby improving the foaming efficiency. Through the cooperation of the supporting chassis, multiple foaming support cylinders, and a mixing rod assembly, the EPP raw material particles and the foaming agent can be added to each foaming support cylinder in batches.

Description

Technical Field

[0001] The present invention relates to the technical field of EPP packaging box production, in particular to a forming device and a forming method for EPP packaging box production. Background Art

[0002] The material of EPP packaging boxes is expanded polypropylene, which is a new type of foam plastic. In order to improve the performance and production efficiency of EPP packaging boxes and respond to the call for environmental protection, plastic waste is recycled and converted into EPP raw material particles. Then, in the production and molding of EPP packaging boxes, an appropriate amount of foaming agent is added to the recycled EPP raw material particles to fuse the EPP raw material particles with the foaming agent. In the subsequent shaping process, it is ensured that the EPP packaging boxes not only maintain their original excellent properties, but also become lighter and more stable in structure, further strengthening EPP's leading position in packaging box manufacturing.

[0003] A fully automatic EPP forming machine disclosed in the patent application with reference publication number CN219563920U drives the mixing tank to rotate through the cooperation of a drive shaft and a fixed frame, and a bevel gear plate is provided on the rear side of the mixing tank, and the bevel gear plate is fixedly installed on the fixed platform. When the fixed frame rotates, the bevel gear engages and rotates with the bevel gear plate, thereby driving the mixing tank to rotate through the driven wheel 1, the belt and the driven wheel 2. When the mixing tank rotates, the stirring effect inside can be improved through the stirring rod, so that the EPP material is fully integrated with the foaming agent, thereby improving the production of EPP foam boards.

[0004] A comprehensive analysis of the above reference patents reveals the following defects:

[0005] In the existing molding device and molding method for EPP packaging box production, in the process of mixing EPP raw material particles and foaming agent to achieve foaming reaction, the raw materials and foaming agent are usually added into a single foaming cylinder in large quantities at one time. It is difficult to add the raw materials and foaming agent into multiple foaming branches in batches, and intermittently add a set amount of raw materials and foaming agent into each foaming branch, resulting in poor mixing effect, easy to cause incomplete foaming, and affect the molding quality of the product. Therefore, it is necessary to provide a molding device and molding method for EPP packaging box production to solve the above technical problems. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a molding device and a molding method for the production of EPP packaging boxes, which solves the problem that in the process of mixing EPP raw material particles and a foaming agent to achieve a foaming reaction, the raw materials and the foaming agent are usually put into a single foaming cylinder in large quantities at one time, making it difficult to put the raw materials and the foaming agent into multiple foaming branches in batches, and to intermittently put a set amount of raw materials and foaming agent into each foaming branch, resulting in poor mixing effect, incomplete foaming, and affecting the product molding quality.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A forming device for producing EPP packaging boxes, comprising:

[0008] A lower working barrel, an upper working barrel is provided on the top of the lower working barrel via a connecting plate, the lower working barrel and the upper working barrel are placed on the ground via a plurality of supporting legs, a protective cover is fixedly provided on the bottom of the lower working barrel, an inner gear ring is fixedly provided in the inner cavity of the protective cover via a plurality of supporting plates, a liquid storage barrel is provided behind the lower working barrel and the upper working barrel for containing a foaming agent, and the liquid storage barrel is placed on the ground;

[0009] A foaming barrel mechanism is used to fuse EPP raw material particles converted from recycled plastic waste with a foaming agent to perform a foaming reaction. The foaming barrel mechanism is arranged between the lower working barrel and the interior of the upper working barrel;

[0010] A feeding mechanism is used to intermittently feed EPP raw material particles and foaming agent converted from recycled plastic waste into the foaming cylinder mechanism. The feeding mechanism is arranged on the top right side of the upper working barrel;

[0011] The driving rod mechanism is used to drive the foaming tube mechanism to rotate and drive the feeding mechanism to work. The driving rod mechanism is arranged between the lower working barrel, the upper working barrel and the interior of the feeding mechanism.

[0012] Preferably, the foaming cylinder mechanism includes a supporting chassis, which rotates and passes through the bottom of the lower working barrel. A number of foaming branches are evenly and fixedly arranged on the top of the supporting chassis. The top of each foaming branch cylinder is in contact with the top wall of the inner cavity of the upper working barrel. A mixing rod assembly is rotatably arranged in the inner cavity of each foaming branch cylinder. A discharge pipe that passes through the bottom of the supporting chassis is fixedly arranged at the bottom of each foaming branch cylinder, and a solenoid valve located below the supporting chassis is fixedly arranged on the upper part of the discharge pipe.

[0013] Preferably, each of the mixing rod assemblies includes a first shaft rod, the bottom of the first shaft rod rotates and passes through the bottom of the foaming support tube and the supporting chassis, the outer wall of the first shaft rod is evenly fixed with a plurality of first mixing support rods located in the foaming support tube, and the plurality of first mixing support rods are spirally distributed on the outside of the first shaft rod, the top of the first shaft rod is fixed with a second shaft rod, the outer wall of the second shaft rod is evenly fixed with a plurality of second mixing support rods, and the plurality of second mixing support rods are spirally distributed on the outside of the second shaft rod, the spiral shape formed by the plurality of second mixing support rods and the spiral shape formed by the plurality of first mixing support rods have opposite rotation directions, and the bottom of the first shaft rod is fixedly sleeved with a gear located below the supporting chassis, and the gear is meshed with the inner gear ring.

[0014] Preferably, the feeding mechanism includes a accommodating box, which is fixedly arranged on the top right side of the upper working barrel, a partition is fixedly arranged between the left side walls of the inner cavity of the accommodating box, a hollow disk is fixedly passed through the top of the accommodating box, the top of the hollow disk is fixedly connected to a storage hopper, a sealing cover is provided on the top of the storage hopper, the bottom of the hollow disk is fixedly connected to a discharge pipe, the bottom of the discharge pipe is fixedly passed through the top of the upper working barrel, and a liquid extraction cylinder assembly is provided in the accommodating box and between the two sides of the discharge pipe.

[0015] Preferably, a feed disc body is rotatably provided between the inner walls of the hollow disc, a material trough is provided on the top of the feed disc body, a horizontal shaft is fixedly passed through the middle of the inner part of the feed disc body, the left and right ends of the horizontal shaft pass through the outer wall of the hollow disc, the right end of the horizontal shaft is rotatably connected to the right wall of the inner cavity of the containing box, a cam is fixedly provided on the outside of the horizontal shaft and on both sides of the hollow disc, a transmission is fixedly provided on the right side of the partition, the output shaft of the transmission is fixedly connected to the left end of the horizontal shaft, and the input shaft of the transmission rotates through the left wall of the partition and is fixedly provided with a first bevel gear.

[0016] Preferably, the liquid suction cylinder assembly includes two cylinders, the rear ends of the two cylinders are fixedly connected to the rear wall of the inner cavity of the containing box through a rod body, the two cylinders are respectively located on the left and right sides of the discharge pipe, and a piston block is slidably arranged between the inner walls of each cylinder, and a piston rod is fixedly arranged on the top of the piston block.

[0017] Preferably, the top of the piston rod slides through the top of the cylinder and is fixedly provided with a top plate, which is located directly below the corresponding cam. The outside of the piston rod is provided with a spring, which is located between the top of the cylinder and the bottom of the top plate.

[0018] Preferably, the bottom of the cylinder is fixedly connected to a liquid outlet pipe, the bottom of the liquid outlet pipe is fixedly passed through the top of the upper working barrel, the upper part of the liquid outlet pipe is fixedly provided with a liquid outlet valve located above the upper working barrel, the rear end bottom of the cylinder is fixedly connected to a liquid inlet pipe, the front part of the liquid inlet pipe is fixedly provided with a liquid inlet valve, the rear end of the liquid inlet pipe is fixedly passed through the rear wall of the storage box, an L-shaped elbow is fixedly connected between the two liquid inlet pipes, the bottom of the L-shaped elbow is fixedly passed through the top of the liquid storage barrel and extends to the lower part of its inner cavity.

[0019] Preferably, the driving rod mechanism includes a servo motor, which is fixedly connected to the top left side of the accommodating box. The output end of the servo motor passes through the top of the accommodating box and is fixedly provided with a connecting shaft. The bottom of the connecting shaft rotates and passes through the top of the upper working barrel and is fixedly connected to the top middle of the supporting chassis. The lower fixed sleeve of the connecting shaft is provided with a connecting frame, which is fixedly connected to the side walls of several foaming support cylinders. The upper fixed sleeve of the connecting shaft is provided with a second bevel gear, and the right side of the second bevel gear is meshed with the bottom of the first bevel gear.

[0020] The present invention also provides a forming method for producing an EPP packaging box, using a forming device for producing an EPP packaging box. The specific method includes the following steps:

[0021] Step 1: Put the EPP raw material particles converted from recycled plastic waste into the feeding mechanism in advance, and inject the foaming agent into the liquid storage barrel, then start the driving rod mechanism to drive the foaming cylinder mechanism to rotate, and drive the feeding mechanism to work at the same time. During the operation of the feeding mechanism, a set amount of EPP raw material particles is intermittently added into the foaming cylinder mechanism, and the foaming agent in the liquid storage barrel is intermittently sucked into the foaming cylinder mechanism. During the rotation of the foaming cylinder mechanism, the EPP raw material particles and the foaming agent inside are automatically stirred to fully mix the EPP raw material particles and the foaming agent to carry out a foaming reaction. After that, the foamed mixture is discharged through the bottom of the foaming cylinder mechanism;

[0022] Step 2: The mixture is then fed into a melt extruder, where it is heated to a molten state and then melt-extruded;

[0023] Step 3: Place the mixture into a shaping mold to gradually shape it to obtain an EPP packaging box.

[0024] Beneficial effects

[0025] The present invention provides a forming device and forming method for producing EPP packaging boxes. Compared with the prior art, it has the following advantages:

[0026] 1. A forming device and forming method for producing EPP packaging boxes. Through the mutual cooperation between a foaming cylinder mechanism, an internal gear ring, a feeding mechanism and a driving rod mechanism, the driving rod mechanism is started to simultaneously drive the foaming cylinder mechanism and the feeding mechanism to work together. During the operation of the feeding mechanism, a set amount of EPP raw material particles converted from recycled plastic waste is intermittently added into the foaming cylinder mechanism, and the foaming agent in the liquid storage barrel is intermittently sucked into the foaming cylinder mechanism. During the operation of the foaming cylinder mechanism, the EPP raw material particles and the foaming agent inside can be automatically stirred, so that the EPP raw material particles and the foaming agent can be fully mixed, thereby improving the foaming efficiency.

[0027] 2. A forming device and forming method for the production of EPP packaging boxes. Through the mutual cooperation between the supporting chassis, multiple foaming support cylinders and the mixing rod assembly, each foaming support cylinder is intermittently rotated to the bottom of the feeding mechanism under the drive of the driving rod mechanism, so that the EPP raw material particles and foaming agent converted from recycled plastic waste can be put into each foaming support cylinder in batches, avoiding the problem of uneven mixing caused by putting a large amount of raw materials and foaming agent into a single foaming cylinder at one time. Since the raw materials and foaming agent are evenly distributed to multiple foaming support cylinders, the mixing amount in each foaming support cylinder is relatively small, the required stirring time is correspondingly shortened, and production efficiency is further improved.

[0028] 3. A forming device and forming method for EPP packaging box production, through the mutual cooperation between the liquid pumping cylinder assembly, the feed disc, the horizontal shaft, the cam and the first bevel gear, since the second bevel gear is engaged with the first bevel gear, the servo motor drives the connecting shaft and the second bevel gear to rotate, and also drives the horizontal shaft to rotate, thereby driving the feed disc and the cam to rotate. During the rotation of the feed disc, when the trough rotates to the upper side and is connected with the storage hopper, the EPP raw material particles in the storage hopper will partially slide into the trough under the action of their own gravity to fill it, and the EPP raw material particles in the trough are It is transported downward and eventually falls automatically into the foaming branch cylinder directly below through the discharge pipe under the action of its own gravity, so as to achieve the purpose of intermittently feeding EPP raw material particles into each foaming branch cylinder. During the rotation of the cam, the top plate is pushed downward intermittently, and the piston block moves downward accordingly, pushing the foaming agent sucked up from the liquid storage barrel in the cylinder body into the foaming cylinder mechanism through the liquid outlet pipe. Then, under the elastic action of the spring, the top plate moves up again, and the piston block moves up and returns to its original position. In the process, the suction force is used to suck the foaming agent in the liquid storage barrel into the cylinder body again, thereby achieving the purpose of intermittently injecting foaming agent into each foaming branch cylinder, and the operation is convenient and efficient.

[0029] 4. A forming device and forming method for producing EPP packaging boxes. Through the mutual cooperation between a first mixing support rod, a second mixing support rod, a gear and an inner gear ring, as the supporting chassis and multiple foaming support cylinders rotate together, since the gear on each foaming support cylinder is engaged with the inner gear ring, the mixing rod assembly in each foaming support cylinder will rotate on its own, thereby automatically stirring the EPP raw material particles and foaming agent in the foaming support cylinder, so that they are fully mixed and a foaming reaction is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a first stereogram of the present invention;

[0031] Figure 2 is a second perspective view of the present invention;

[0032] Figure 3 is a third stereogram of the present invention;

[0033] Figure 4 is a cutaway perspective view of the present invention;

[0034] Figure 5 This is a first sectional perspective view of the lower working barrel, the upper working barrel, and the protective cover of the present invention;

[0035] Figure 6 A second sectional perspective view of the lower working barrel, the upper working barrel, and the protective cover of the present invention;

[0036] Figure 7 A three-dimensional diagram of the foam support tube of the present invention;

[0037] Figure 8 A sectional perspective view of the foam support tube of the present invention;

[0038] Figure 9 It is an assembly perspective view of the feeding mechanism and the driving rod mechanism of the present invention;

[0039] Figure 10 It is a cutaway perspective view of the feeding mechanism of the present invention;

[0040] Figure 11 For the present invention Figure 10 A partial enlarged view of point A in the middle;

[0041] Figure 12 is a three-dimensional diagram of the hollow tray of the present invention;

[0042] Figure 13 is a cutaway perspective view of the hollow disk of the present invention;

[0043] Figure 14 A perspective view of a liquid extraction cylinder assembly of the present invention;

[0044] Figure 15 It is a sectional perspective view of the cylinder of the present invention.

[0045] Figure: 1. Lower working barrel; 2. Upper working barrel; 3. Foaming barrel mechanism; 31. Carrying chassis; 32. Foaming support barrel; 33. Mixing rod assembly; 331. First shaft; 332. First mixing support rod; 333. Second shaft; 334. Second mixing support rod; 335. Gear; 34. Discharge pipe; 35. Solenoid valve; 4. Protective cover; 5. Internal gear ring; 6. Feeding mechanism; 61. Receiving box; 62. Partition; 63. Hollow tray; 64. Storage hopper; 65 , feeding pipe; 66, liquid pumping cylinder assembly; 661, cylinder body; 662, piston block; 663, piston rod; 664, top plate; 665, spring; 666, liquid outlet pipe; 667, liquid inlet pipe; 668, L-shaped elbow; 67, feeding plate; 68, horizontal axis; 69, cam; 610, transmission; 611, first bevel gear; 7, driving rod mechanism; 71, servo motor; 72, connecting shaft; 73, connecting frame; 74, second bevel gear; 8, liquid storage barrel. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] The present invention provides two technical solutions:

[0048] like Figures 1 to 4 A first embodiment is shown: a forming device for producing EPP packaging boxes, comprising:

[0049] A lower working barrel 1 is provided with an upper working barrel 2 on the top thereof via a connecting plate. The lower working barrel 1 and the upper working barrel 2 are placed on the ground via a plurality of supporting legs. A protective cover 4 is fixedly provided at the bottom of the lower working barrel 1. An inner gear ring 5 is fixedly provided in the inner cavity of the protective cover 4 via a plurality of supporting plates. A liquid storage barrel 8 is provided behind the lower working barrel 1 and the upper working barrel 2 for containing a foaming agent. The liquid storage barrel 8 is placed on the ground.

[0050] The foaming barrel mechanism 3 is used to fuse the EPP raw material particles converted from recycled plastic waste with the foaming agent to perform a foaming reaction. The foaming barrel mechanism 3 is arranged between the lower working barrel 1 and the upper working barrel 2;

[0051] The feeding mechanism 6 is used to intermittently feed EPP raw material particles and foaming agent converted from recycled plastic waste into the foaming cylinder mechanism 3. The feeding mechanism 6 is arranged on the top right side of the upper working barrel 2;

[0052] The driving rod mechanism 7 is used to drive the foaming tube mechanism 3 to rotate and drive the feeding mechanism 6 to work. The driving rod mechanism 7 is arranged between the lower working barrel 1, the upper working barrel 2 and the inside of the feeding mechanism 6.

[0053] Through the mutual cooperation among the foaming cylinder mechanism 3, the inner gear ring 5, the feeding mechanism 6 and the driving rod mechanism 7, the driving rod mechanism 7 is started, and the foaming cylinder mechanism 3 and the feeding mechanism 6 can be driven to work together at the same time. During the operation of the feeding mechanism 6, a set amount of EPP raw material particles converted from recycled plastic waste is intermittently added into the foaming cylinder mechanism 3, and the foaming agent in the liquid storage barrel 8 is intermittently sucked into the foaming cylinder mechanism 3. During the operation of the foaming cylinder mechanism 3, the EPP raw material particles and the foaming agent inside can be automatically stirred, so that the EPP raw material particles and the foaming agent can be fully mixed, thereby improving the foaming efficiency.

[0054] like Figures 5 to 15The second embodiment is shown, which mainly differs from the first embodiment in that: a forming device for the production of EPP packaging boxes, the foaming tube mechanism 3 includes a supporting chassis 31, the vertical section of the supporting chassis 31 is I-shaped, the supporting chassis 31 rotates and passes through the bottom of the lower working barrel 1, and a plurality of foaming branches 32 are evenly fixedly arranged on the top circle of the supporting chassis 31. The top of each foaming branch tube 32 contacts the top wall of the inner cavity of the upper working barrel 2, and the inner cavity of each foaming branch tube 32 is rotatably provided with a mixing rod assembly 33. The bottom of each foaming branch tube 32 is fixedly provided with a discharge pipe 34 that passes through the bottom of the supporting chassis 31, and the upper part of the discharge pipe 34 is fixedly provided with a solenoid valve 35 located below the supporting chassis 31. Each mixing rod assembly 33 The first shaft 331 includes a first shaft 331, the bottom of the first shaft 331 rotates and passes through the bottom of the foaming support tube 32 and the supporting chassis 31, the outer wall of the first shaft 331 is evenly fixed with a plurality of first mixing support rods 332 located in the foaming support tube 32, and the plurality of first mixing support rods 332 are spirally distributed on the outside of the first shaft 331, and the top of the first shaft 331 is fixed with a second shaft 333, and the outer wall of the second shaft 333 is evenly fixed with a plurality of second mixing support rods 334, and the plurality of second mixing support rods 334 are spirally distributed on the outside of the second shaft 333. The spiral shape formed by the plurality of second mixing support rods 334 is opposite to the spiral shape formed by the plurality of first mixing support rods 332. The bottom of the first shaft 331 is fixed. The sleeve is provided with a gear 335 located below the supporting chassis 31, and the gear 335 is meshed with the inner gear ring 5. The feeding mechanism 6 includes a accommodating box 61, which is fixedly arranged on the top right side of the upper working barrel 2. A partition 62 is fixedly arranged between the side walls of the left part of the inner cavity of the accommodating box 61, and a hollow disk 63 is fixedly passed through the top of the accommodating box 61. The top of the hollow disk 63 is fixedly connected to a storage hopper 64, and a sealing cover is provided on the top of the storage hopper 64. The bottom of the hollow disk 63 is fixedly connected to a discharge pipe 65, and the bottom of the discharge pipe 65 is fixedly passed through the top of the upper working barrel 2. A liquid pumping cylinder assembly 66 is provided in the accommodating box 61 and between the two sides of the discharge pipe 65. A feed disc body 67 is rotatably provided between the inner walls of the hollow disk 63, and the top of the feed disc body 67 is opened. A material trough is provided, and a horizontal shaft 68 is fixedly passed through the middle of the inner part of the feeding disc body 67. The left and right ends of the horizontal shaft 68 pass through the outer wall of the hollow disc 63, and the right end of the horizontal shaft 68 is rotatably connected to the right wall of the inner cavity of the accommodating box 61. Cams 69 are fixedly sleeved on the outside of the horizontal shaft 68 and on both sides of the hollow disc 63. A transmission 610 is fixedly provided on the right side of the partition 62. The output shaft of the transmission 610 is fixedly connected to the left end of the horizontal shaft 68. The input shaft of the transmission 610 rotates and passes through the left wall of the partition 62 and is fixedly provided with a first bevel gear 611. The liquid pumping cylinder assembly 66 includes two cylinders 661. The rear ends of the two cylinders 661 are fixedly connected to the rear wall of the inner cavity of the accommodating box 61 through a rod body. The two cylinders 661 are respectively located on the left and right sides of the discharge pipe 65.A piston block 662 is slidably provided between the inner walls of each cylinder 661, and a piston rod 663 is fixedly provided on the top of the piston block 662. The top of the piston rod 663 slides through the top of the cylinder 661 and is fixedly provided with a top plate 664. The top plate 664 is located directly below the corresponding cam 69. A spring 665 is sleeved on the outside of the piston rod 663. The spring 665 is located between the top of the cylinder 661 and the bottom of the top plate 664. The bottom of the cylinder 661 is fixedly connected to a liquid outlet pipe 666. The bottom of the liquid outlet pipe 666 is fixedly passed through the top of the upper working barrel 2. The upper part of the liquid outlet pipe 666 is fixedly provided with a liquid outlet valve located above the upper working barrel 2. The rear end bottom of the cylinder 661 is fixedly connected to a liquid inlet pipe 667. The front of the liquid inlet pipe 667 is fixedly provided with a liquid inlet valve. The rear end of the liquid inlet pipe 667 is fixedly provided with a liquid inlet valve. The rear wall of the container box 61 is fixedly penetrated, and an L-shaped elbow 668 is fixedly connected between the two liquid inlet pipes 667. The bottom of the L-shaped elbow 668 is fixedly penetrated from the top of the liquid storage barrel 8 and extends to the lower part of its inner cavity. The drive rod mechanism 7 includes a servo motor 71, which is fixedly connected to the left side of the top of the container box 61. The output end of the servo motor 71 penetrates the top of the container box 61 and is fixedly provided with a connecting shaft 72. The bottom of the connecting shaft 72 rotates through the top of the upper working barrel 2 and is fixedly connected to the middle of the top of the supporting chassis 31. The lower part of the connecting shaft 72 is fixedly sleeved with a connecting frame 73, which is fixedly connected to the side walls of the foaming support tubes 32. The upper part of the connecting shaft 72 is fixedly sleeved with a second bevel gear 74. The right side of the second bevel gear 74 meshes with the bottom of the first bevel gear 611.

[0055] Through the mutual cooperation among the supporting chassis 31, the multiple foaming support cylinders 32 and the mixing rod assembly 33, under the drive of the driving rod mechanism 7, each foaming support cylinder 32 is intermittently rotated to the right below the feeding mechanism 6, so that the EPP raw material particles and foaming agent converted from the recycled plastic waste can be put into each foaming support cylinder 32 in batches, avoiding the problem of uneven mixing caused by putting a large amount of raw materials and foaming agent into a single foaming cylinder at one time. Since the raw materials and foaming agent are evenly distributed to the multiple foaming support cylinders 32, the mixing amount in each foaming support cylinder 32 is relatively small, and the required stirring time is also shortened accordingly, further improving the mixing efficiency. High production efficiency, through the mutual cooperation between the liquid pumping cylinder assembly 66, the feeding disc body 67, the horizontal shaft 68, the cam 69 and the first bevel gear 611, since the second bevel gear 74 is meshed with the first bevel gear 611, the servo motor 71 drives the connecting shaft 72 and the second bevel gear 74 to rotate, which also drives the horizontal shaft 68 to rotate, thereby driving the feeding disc body 67 and the cam 69 to rotate. During the rotation of the feeding disc body 67, when the material trough rotates to the upper side and is connected with the storage hopper 64, the EPP raw material particles in the storage hopper 64 will partially slide into the material trough under the action of their own gravity to fill it, and the EPP raw material in the material trough will be filled. The material particles are transported downward as the feeding disc 67 rotates, and finally automatically fall into the foaming support cylinder 32 directly below through the discharge pipe 65 under the action of their own gravity, so as to achieve the purpose of intermittently feeding EPP raw material particles into each foaming support cylinder 32. During the rotation of the cam 69, the top plate 664 is pushed downward intermittently, and the piston block 662 moves downward accordingly, and the foaming agent sucked up from the liquid storage barrel 8 in the cylinder 661 is pushed into the foaming cylinder mechanism 3 through the liquid outlet pipe 666. After that, under the elastic action of the spring 665, the top plate 664 moves up again, and the piston block 662 moves up and returns to its original position. In the process, the liquid storage barrel is lifted by the suction force. 8 is sucked into the cylinder 661 again, so that the purpose of intermittently injecting the foaming agent into each foaming branch cylinder 32 can be achieved. The operation is convenient and efficient. Through the mutual cooperation between the first mixing support rod 332, the second mixing support rod 334, the gear 335 and the inner gear ring 5, as the supporting chassis 31 and the multiple foaming branches 32 rotate together, since the gear 335 on each foaming branch cylinder 32 is engaged with the inner gear ring 5, the mixing rod assembly 33 in each foaming branch cylinder 32 will rotate on its own, and the EPP raw material particles and the foaming agent in the foaming branch cylinder 32 can be automatically stirred to fully mix them to achieve a foaming reaction.

[0056] The embodiment of the present invention further provides a forming method for producing an EPP packaging box, using a forming device for producing an EPP packaging box. The specific method includes the following steps:

[0057] Step 1: Put the EPP raw material particles converted from recycled plastic waste into the storage hopper 64 in advance, and inject the foaming agent into the liquid storage barrel 8, then start the servo motor 71 to drive the connecting shaft 72, the connecting frame 73 and the second bevel gear 74 to rotate. Since the second bevel gear 74 is engaged with the first bevel gear 611, the second bevel gear 74 will also drive the first bevel gear 611 to rotate during its rotation. At the same time, under the action of the transmission 610, the horizontal shaft 68 will rotate at a set speed, thereby driving the feed disc 67 and the cam 69 to rotate. During the rotation of the feed disc 67, when the material trough rotates, When the EPP raw material particles in the storage hopper 64 are connected to the upper part, part of them will slide into the material tank under the action of their own gravity, filling the interior of the material tank. The EPP raw material particles in the material tank are transported downward as the feeding disc 67 rotates, and finally automatically fall into the foaming support cylinder 32 directly below through the discharge pipe 65 under the action of their own gravity. During the rotation of the cam 69, the top plate 664 is pushed downward intermittently, and the piston block 662 moves downward accordingly, pushing the foaming agent sucked up from the liquid storage barrel 8 in the cylinder 661 through the liquid outlet pipe 666 to the foaming support cylinder 32 directly below, realizing the foaming process. The purpose of intermittently adding EPP raw material particles and foaming agent into the foaming support tube 32 is that, under the elastic action of the spring 665, the top plate 664 moves up again, and the piston block 662 moves up and returns to its original position. During the process, the foaming agent in the liquid storage barrel 8 is sucked into the cylinder body 661 again by the suction force, wherein the side wall of the cam 69 is always in contact with the top of the top plate 664. During the rotation of the connecting shaft 72 and the connecting frame 73, the supporting chassis 31 and the multiple foaming support tubes 32 are driven to rotate together, so that each foaming support tube 32 intermittently rotates to the bottom of the discharge pipe 65 and the liquid outlet pipe 666, wherein the discharge pipe 65 and the liquid outlet pipe The arrangement of 666 does not affect the revolution of the foaming support cylinder 32, thereby allowing the EPP raw material particles and the foaming agent to be added to each foaming support cylinder 32 in batches. Since the gear 335 on each foaming support cylinder 32 is meshed with the internal gear ring 5, the mixing rod assembly 33 inside the foaming support cylinder 32 rotates during its revolution, automatically stirring the EPP raw material particles and the foaming agent in the foaming support cylinder 32 to fully mix and achieve a foaming reaction. When the foaming reaction in one of the foaming support cylinders 32 is completed, the corresponding solenoid valve 35 at its bottom opens, and the foamed mixture inside is discharged downward through the discharge pipe 34.

[0058] Step 2: The discharged mixture is then fed into a melt extruder, wherein the melt extruder is a prior art well known to those skilled in the art. Under the action of the melt extruder, the mixture is heated to a molten state and then melt-extruded;

[0059] Step 3: squeeze the mixture into a shaping mold to gradually shape it to obtain an EPP packaging box. After shaping is completed, take the EPP packaging box out of the mold and cool it.

[0060] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A forming device for EPP packaging box production, characterized in that: include: A lower working barrel (1), the top of the lower working barrel (1) is provided with an upper working barrel (2) through a connecting plate, the lower working barrel (1) and the upper working barrel (2) are placed on the ground through a plurality of supporting legs, a protective cover (4) is fixedly provided on the bottom of the lower working barrel (1), an inner gear ring (5) is fixedly provided in the inner cavity of the protective cover (4) through a plurality of supporting plates, a liquid storage barrel (8) is provided behind the lower working barrel (1) and the upper working barrel (2) for containing a foaming agent, and the liquid storage barrel (8) is placed on the ground; A foaming barrel mechanism (3) is used to fuse EPP raw material particles converted from recycled plastic waste with a foaming agent to perform a foaming reaction, wherein the foaming barrel mechanism (3) is arranged between the interior of the lower working barrel (1) and the interior of the upper working barrel (2); A feeding mechanism (6) is used for intermittently feeding EPP raw material particles and foaming agent converted from recycled plastic waste into the foaming barrel mechanism (3), and the feeding mechanism (6) is arranged on the top right side of the upper working barrel (2); A driving rod mechanism (7) is used to drive the foaming tube mechanism (3) to rotate and simultaneously drive the feeding mechanism (6) to work, wherein the driving rod mechanism (7) is arranged between the lower working barrel (1), the upper working barrel (2) and the interior of the feeding mechanism (6); The foaming tube mechanism (3) includes a supporting chassis (31), the supporting chassis (31) is rotated and penetrates the bottom of the lower working barrel (1), a plurality of foaming branches (32) are evenly fixedly arranged around the top of the supporting chassis (31), the top of each foaming branch tube (32) is in contact with the top wall of the inner cavity of the upper working barrel (2), the inner cavity of each foaming branch tube (32) is rotatably provided with a mixing rod assembly (33), the bottom of each foaming branch tube (32) is fixedly provided with a discharge pipe (34) that penetrates to the bottom of the supporting chassis (31), and the upper part of the discharge pipe (34) is fixedly provided with a solenoid valve (35) located below the supporting chassis (31); The feeding mechanism (6) includes a accommodating box (61), and the driving rod mechanism (7) includes a servo motor (71). The servo motor (71) is fixedly connected to the left side of the top of the accommodating box (61). The output end of the servo motor (71) passes through the top of the accommodating box (61) and is fixedly provided with a connecting shaft (72). The bottom of the connecting shaft (72) rotates and passes through the top of the upper working barrel (2) and is fixedly connected to the middle of the top of the supporting chassis (31). The lower part of the connecting shaft (72) is fixedly sleeved with a connecting frame (73). The connecting frame (73) is fixedly connected to the side walls of the plurality of foaming support cylinders (32). The upper part of the connecting shaft (72) is fixedly sleeved with a second bevel gear (74).

2. A forming device for producing EPP packaging boxes according to claim 1, characterized in that: Each mixing rod assembly (33) includes a first shaft (331), the bottom of the first shaft (331) is rotated and penetrates between the foaming support tube (32) and the bottom of the supporting chassis (31), the outer wall of the first shaft (331) is evenly fixed with a plurality of first mixing support rods (332) located in the foaming support tube (32), the plurality of first mixing support rods (332) are spirally distributed outside the first shaft (331), and the top of the first shaft (331) is fixed with a second shaft (333) The outer wall of the second shaft (333) is evenly and fixedly provided with a plurality of second mixing support rods (334), and the plurality of second mixing support rods (334) are spirally distributed outside the second shaft (333). The spiral shape formed by the plurality of second mixing support rods (334) is opposite to the spiral shape formed by the plurality of first mixing support rods (332). The bottom of the first shaft (331) is fixedly sleeved with a gear (335) located below the supporting chassis (31), and the gear (335) is meshed with the inner gear ring (5).

3. The forming device for producing EPP packaging boxes according to claim 1, characterized in that: The accommodating box (61) is fixedly arranged on the top right side of the upper working barrel (2), a partition (62) is fixedly arranged between the left side walls of the inner cavity of the accommodating box (61), a hollow disk (63) is fixedly passed through the top of the accommodating box (61), the top of the hollow disk (63) is fixedly connected to a storage hopper (64), the top of the storage hopper (64) is provided with a sealing cover, the bottom of the hollow disk (63) is fixedly connected to a discharge pipe (65), the bottom of the discharge pipe (65) is fixedly passed through the top of the upper working barrel (2), and a liquid extraction cylinder assembly (66) is provided in the accommodating box (61) and between the two sides of the discharge pipe (65).

4. The forming device for producing EPP packaging boxes according to claim 3, characterized in that: A feed disc body (67) is rotatably provided between the inner walls of the hollow disc (63), a material trough is provided on the top of the feed disc body (67), a transverse shaft (68) is fixedly passed through the middle of the inner part of the feed disc body (67), the left and right ends of the transverse shaft (68) both pass through the outer wall of the hollow disc (63), the right end of the transverse shaft (68) is rotatably connected to the right wall of the inner cavity of the accommodating box (61), a cam (69) is fixedly provided on the outside of the transverse shaft (68) and on both sides of the hollow disc (63), a transmission (610) is fixedly provided on the right side of the partition (62), the output shaft of the transmission (610) is fixedly connected to the left end of the transverse shaft (68), the input shaft of the transmission (610) rotatably passes through the left wall of the partition (62) and is fixedly provided with a first bevel gear (611).

5. The forming device for producing EPP packaging boxes according to claim 3, characterized in that: The liquid extraction cylinder assembly (66) includes two cylinders (661), the rear ends of the two cylinders (661) are fixedly connected to the rear wall of the inner cavity of the accommodating box (61) through a rod body, and the two cylinders (661) are respectively located on the left and right sides of the discharge pipe (65). A piston block (662) is slidably arranged between the inner walls of each cylinder (661), and a piston rod (663) is fixedly arranged on the top of the piston block (662).

6. The forming device for producing EPP packaging boxes according to claim 5, characterized in that: The top of the piston rod (663) slides through the top of the cylinder (661) and is fixedly provided with a top plate (664), and the top plate (664) is located directly below the corresponding cam (69). The outside of the piston rod (663) is provided with a spring (665), and the spring (665) is located between the top of the cylinder (661) and the bottom of the top plate (664).

7. The forming device for producing EPP packaging boxes according to claim 5, characterized in that: The bottom of the cylinder (661) is fixedly connected to a liquid outlet pipe (666), the bottom of the liquid outlet pipe (666) is fixedly passed through the top of the upper working barrel (2), the upper portion of the liquid outlet pipe (666) is fixedly provided with a liquid outlet valve located above the upper working barrel (2), the rear end bottom of the cylinder (661) is fixedly connected to a liquid inlet pipe (667), the front portion of the liquid inlet pipe (667) is fixedly provided with a liquid inlet valve, the rear end of the liquid inlet pipe (667) is fixedly passed through the rear wall of the accommodating box (61), an L-shaped elbow pipe (668) is fixedly connected between the two liquid inlet pipes (667), the bottom of the L-shaped elbow pipe (668) is fixedly passed through the top of the liquid storage barrel (8) and extends to the lower portion of its inner cavity.

8. The forming device for producing EPP packaging boxes according to claim 4, characterized in that: The right side of the second bevel gear (74) is meshed with the bottom of the first bevel gear (611).

9. A molding method for producing EPP packaging boxes, characterized by: Using the forming device for producing EPP packaging boxes according to any one of claims 1 to 8, the method comprises the following steps: Step 1: Put EPP raw material particles converted from recycled plastic waste into the feeding mechanism (6) in advance, and inject the foaming agent into the liquid storage barrel (8), then start the driving rod mechanism (7), drive the foaming tube mechanism (3) to rotate, and drive the feeding mechanism (6) to work at the same time. During the operation of the feeding mechanism (6), a set amount of EPP raw material particles is intermittently added into the foaming tube mechanism (3), and the foaming agent in the liquid storage barrel (8) is intermittently sucked into the foaming tube mechanism (3). During the rotation of the foaming tube mechanism (3), the EPP raw material particles and the foaming agent inside are automatically stirred to fully mix the EPP raw material particles and the foaming agent to perform a foaming reaction. After that, the foamed mixture is discharged through the bottom of the foaming tube mechanism (3); Step 2: The mixture is then fed into a melt extruder, where it is heated to a molten state and then melt-extruded; Step 3: Place the mixture into a shaping mold to gradually shape it to obtain an EPP packaging box.

Images