A kind of manufacturing equipment and preparation method of PP board

Abstract

The present invention belongs to the field of PP sheets, and in particular relates to a manufacturing device and method for PP sheets, comprising an extrusion barrel, a motor A, a motor B, a square barrel, a pressure roller, and a pressure plate. The extrusion barrel, which is mounted at the end of the extrusion tube and has a rectangular cross-section, is provided with a plurality of hollow cylinders evenly spaced laterally via a fixing rod. The present invention extrudes a PP sheet with squares through the gaps between each square barrel and between each square barrel and the extrusion barrel. A pressure plate on each square barrel separates the longitudinal barrier extruded from the gaps between adjacent square barrels to form a section. The corresponding pressure roller then presses one end of the barrier separated by the pressure plate onto a side wall of one side of the square. Finally, the pressure plate swings the barrier, one end of which is bonded to one side wall of the square, into a transverse direction and bonds it to the other side wall of the square, thereby forming longitudinally spaced transverse reinforcement barriers within each square, thereby improving the bending strength of the PP sheet along the longitudinal direction of the square.

Description

Technical Field

[0001] The present invention belongs to the field of PP boards, and in particular relates to a manufacturing device and a preparation method of a PP board. Background Art

[0002] PP board is a non-crystalline material and a modified polypropylene composite material. It is harder than PE board and has a higher melting point. It has high mechanical strength and is resistant to pressure and moisture. It is widely used in chemical containers, machinery, electronic appliances and other fields.

[0003] PP hollow plastic board is extruded through a hollow board production line. Its cross section is a linearly distributed square hole structure. It is light in weight and high in strength, and is 4 to 10 times lighter than corrugated cardboard.

[0004] PP hollow plastic sheets have many advantages. In order to be further applied in situations where higher strength is required, the strength of PP hollow sheets with square holes in cross section cannot meet the demand.

[0005] Based on the existing structural state of square holes in cross section, adding transverse partitions in each grid of the PP board is a measure to improve the strength of the PP board. However, the current extruder cannot add partitions in the square holes along the extrusion direction of the PP board.

[0006] The present invention designs a manufacturing device and a preparation method for PP boards to solve the above problems. Summary of the Invention

[0007] In order to solve the above-mentioned defects in the prior art, the present invention discloses a manufacturing device and a preparation method of PP board, which are achieved by adopting the following technical solutions.

[0008] A PP board manufacturing device comprises an extrusion barrel, an extrusion tube, a motor A, a motor B, a cylinder, a square barrel, a guide rail, a pressure roller, and a pressure plate. The extrusion barrel, which is installed at the end of the extrusion tube and has a rectangular cross-section, is equipped with a plurality of hollow cylinders evenly spaced laterally via a fixing rod. A square barrel with an upper hole for forming a PP board is installed at the end of each cylinder. A pressure plate is hingedly connected to each square barrel, which divides the side wall of plastic extruded from between it and the adjacent square barrel into two layers and cuts off one layer and glues it horizontally to the corresponding square hole to form a transverse partition. The pressure plate is driven by the motor B outside the extrusion barrel. A slider slides on the arc-shaped guide rail at the end of the square barrel. The slider has a pressure roller on it, which presses and glues the extruded end of one layer of plastic cut off by the pressure plate to another layer. The pressure roller is driven by the motor A outside the extrusion barrel.

[0009] As a further improvement of the present technology, a baffle A driven by a motor A slides on the outside of the extrusion cylinder along the extrusion direction of the PP board. A driving rod A corresponding to the cylinder is installed on the baffle A. The driving rod A slides in the chute A on the extrusion cylinder and the chute C on the corresponding cylinder; each driving rod A is connected to the corresponding slider through a steel wire sliding in the guide sleeve A.

[0010] As a further improvement of the present technology, a rack A is mounted on the baffle A, and the rack A is engaged with the gear A on the output shaft of the motor A.

[0011] As a further improvement of the present technology, a baffle C is installed on the driving rod A to block and seal the corresponding sliding groove C.

[0012] As a further improvement of the present technology, a baffle B driven by a motor B slides on the outside of the extrusion barrel along the extrusion direction of the PP board. A drive rod C corresponding to the cylinder is installed on the baffle B. The drive rod C slides in the chute B on the extrusion barrel and the chute D on the corresponding cylinder; each drive rod C is connected to a rack C through the drive rod B sliding in the guide sleeve B, and the rack is engaged with the gear C on the hinge shaft where the corresponding pressure plate is located.

[0013] As a further improvement of the present technology, a rack B is mounted on the baffle B, and the rack B is engaged with the gear B on the output shaft of the motor B.

[0014] As a further improvement of the present technology, a baffle D is installed on the driving rod C to block and seal the corresponding sliding groove D.

[0015] As a further improvement of the present technology, the pressure plate is hinged to the end of the corresponding guide rail, and a soft strip is installed at the end of the pressure plate for pressing and bonding the cut end of the transverse partition to the wall of the corresponding square hole; a cutting strip A and a cutting strip B are installed on one side wall of the square tube for separating the upper and lower sides of the transverse partition separated by the pressure plate.

[0016] As a further improvement of this technology, the initial end of the cylinder has a cone tip that does not retain molten plastic; one side of the fixed rod has a blade that does not retain molten plastic, and the other side of the fixed rod has a blade that facilitates rapid fusion of the molten plastic separated by it.

[0017] As a further improvement of this technology, the preparation method of PP board is as follows: 1. Molten plastic is extruded into the extrusion barrel through the extrusion tube; 2. The molten plastic in the extrusion barrel passes through the square barrel to form a PP board with a square hole, and the plastic side wall between any two adjacent square barrels is separated into two layers by the corresponding pressure plate, and at the same time, the cutting strip A and the cutting strip B cut off the layer separated by the pressure plate from the upper and lower sides; 3. Start the motor A to drive the pressure roller to press and bond the extruded end of the separated layer to one side wall of the square hole; 4. Start the motor B to drive the pressure plate to cut off the separated layer from the end of the square barrel and swing it sideways to the other side wall of the square hole and bond it to form a reinforced partition of the square hole.

[0018] Compared to traditional PP board manufacturing equipment, the present invention extrude PP boards with squares through the gaps between each square tube and between the square tube and the extrusion tube in the extrusion tube. A pressure plate on each square tube separates it from the longitudinal partitions extruded through the gaps between adjacent square tubes to form a partition. Then, a corresponding pressure roller presses one end of the partition separated by the pressure plate and bonds it to the side wall of one side of the square. Finally, the pressure plate swings the partition with one end bonded to the wall of one side of the square to the horizontal direction and bonds it to the other side of the square, thereby forming longitudinally spaced transverse reinforcement partitions in each square, thereby improving the bending strength of the PP board along the longitudinal direction of the square. The present invention has a simple structure and good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of two viewing angles of the present invention.

[0020] Figure 2 It is a transverse cross-sectional diagram of the coordination between the extrusion cylinder, the square cylinder and the upper structure of the square cylinder.

[0021] Figure 3 It is a top-view cross-sectional diagram of the cooperation between the extrusion cylinder, the square cylinder and the upper structure of the square cylinder.

[0022] Figure 4 It is a cross-sectional diagram of the driving structure of the pressure roller and pressure plate in the square cylinder inside the extruder.

[0023] Figure 5 It is a cross-sectional diagram of the driving structure of the driving rod B.

[0024] Figure 6 It is a cross-sectional diagram of the wire drive structure.

[0025] Figure 7 It is a schematic diagram of the structure on the square tube from two perspectives.

[0026] Figure 8 It is a schematic diagram of the extruder from two perspectives.

[0027] Figure 9 It is a schematic diagram of the working of the pressure roller and the pressure plate.

[0028] The names of the numbers in the figure are: 1. Extrusion barrel; 2. Extrusion tube; 3. Chute A; 4. Chute B; 5. Baffle A; 6. Rack A; 7. Gear A; 8. Motor A; 9. Baffle B; 10. Rack B; 11. Gear B; 12. Motor B; 13. Fixed rod; 14. Cylinder; 15. Cone tip; 16. Chute C; 17. Chute D; 18. Square barrel; 19. Guide sleeve A; 20. Steel wire; 21. Baffle C; 22. Drive rod A; 23. Guide sleeve B; 24. Drive rod B; 25. Drive rod C; 26. Baffle D; 27. Guide rail; 28. Slider; 29. ​​Press roller; 30. Press plate; 31. Soft strip; 32. Gear C; 33. Rack C; 34. Cutting strip A; 35. Cutting strip B; 36. PP board; 37. Square hole; 38. Horizontal partition. DETAILED DESCRIPTION

[0029] The accompanying drawings are schematic diagrams of the present invention to facilitate understanding of the structural operation principle. The specific product structure and proportional dimensions can be determined according to the use environment and conventional technology.

[0030] like Figure 1 、 3 , 4, it includes an extrusion barrel 1, an extrusion tube 2, a motor A8, a motor B12, a cylinder 14, a square barrel 18, a guide rail 27, a pressure roller 29, and a pressure plate 30, wherein Figure 2 、 3 As shown in Figures 7 and 7, a plurality of hollow cylinders 14 uniformly spaced laterally are installed in the extrusion barrel 1 having a rectangular cross section and mounted at the end of the extrusion tube 2 through a fixing rod 13. A square cylinder 18 with a hole 37 above the molded PP plate 36 is installed at the end of each cylinder 14. Figure 2 、 7 As shown in FIG9 , each square tube 18 is hinged with a pressing plate 30 which divides the plastic side wall extruded from the adjacent square tube 18 into two layers and cuts off one layer and glues it horizontally into the corresponding square hole 37 to form a transverse partition 38; Figure 3 、 5 As shown in FIG. 7 , the pressing plate 30 is driven by the motor B12 outside the extruder 1; Figure 4 、 6 As shown in Figure 7, a slider 28 slides on the arc-shaped guide rail 27 at the end of the square cylinder 18. The slider 28 has a pressure roller 29 that presses the extruded end of one layer of plastic cut off by the pressing plate 30 to adhere to another layer. The pressure roller 29 is driven by the motor A8 outside the extruder 1.

[0031] like Figure 4 、 6As shown in Figures 8 and 8, a baffle A5 driven by a motor A8 slides on the outside of the extrusion cylinder 1 along the extrusion direction of the PP plate 36. A driving rod A22 corresponding to the cylinder 14 is installed on the baffle A5. The driving rod A22 slides in the chute A3 on the extrusion cylinder 1 and the chute C16 on the corresponding cylinder 14; each driving rod A22 is connected to the corresponding slider 28 through a steel wire 20 sliding in the guide sleeve A19.

[0032] like Figure 1 、 6 As shown, a rack A6 is mounted on the baffle A5, and the rack A6 is engaged with a gear A7 on the output shaft of the motor A8.

[0033] like Figure 6 As shown, a baffle C21 is installed on the driving rod A22 to block and seal the corresponding sliding groove C16.

[0034] like Figure 3 、 5 As shown in Figure 8, a baffle B9 driven by a motor B12 slides on the outside of the extrusion cylinder 1 along the extrusion direction of the PP plate 36. A driving rod C25 corresponding to the cylinder 14 is installed on the baffle B9. The driving rod C25 slides in the slide groove B4 on the extrusion cylinder 1 and the slide groove D17 on the corresponding cylinder 14; each driving rod C25 is connected to a rack C33 through a driving rod B24 sliding in a guide sleeve B23, and the rack is engaged with a gear C32 on the hinge shaft where the corresponding pressure plate 30 is located.

[0035] like Figure 1 、 5 As shown, a rack B10 is mounted on the baffle B9, and the rack B10 is engaged with a gear B11 on the output shaft of the motor B12.

[0036] like Figure 5 As shown, a baffle D26 is installed on the driving rod C25 to block and seal the corresponding sliding groove D17.

[0037] like Figure 7 、 9 As shown, the pressing plate 30 is hinged to the end of the corresponding guide rail 27, and a soft strip 31 is installed at the end of the pressing plate 30 to press and bond the truncated end of the transverse partition 38 to the wall of the corresponding square hole 37; a cutting strip A34 and a cutting strip B35 are installed on one side wall of the square tube 18 to separate the upper and lower sides of the transverse partition 38 separated by the pressing plate 30.

[0038] like Figure 3 、 7 As shown, the initial end of the cylinder 14 has a cone tip 15 that does not retain molten plastic; one side of the fixed rod 13 has a blade that does not retain molten plastic, and the other side of the fixed rod 13 has a blade that facilitates the rapid fusion of the molten plastic separated by it.

[0039] like Figure 2 、 3 As shown in Figure 9, the preparation method of the PP plate 36 is as follows: 1. The molten plastic is extruded into the extrusion barrel 1 through the extrusion tube 2; 2. The molten plastic in the extrusion barrel 1 passes through the square barrel 18 to form a PP plate 36 with a square hole 37, and the plastic side wall between any two adjacent square barrels 18 is separated into two layers by the corresponding pressing plate 30, and at the same time, the cutting strip A34 and the cutting strip B35 cut off the layer separated by the pressing plate 30 from the upper and lower sides; 3. The motor A8 is started to drive the pressing roller 29 to press and bond the extruded end of the separated layer to one side wall of the square hole 37; 4. The motor B12 is started to drive the pressing plate 30 to cut off the separated layer from the end of the square barrel 18 and swing it sideways to the other side wall of the square hole 37 and bond it to form a reinforced partition of the square hole 37.

[0040] The working process of the present invention is as follows: in the initial state, the pressing plate 30 on each square tube 18 is parallel to its side wall and located outside the side wall, and the pressing roller 29 is close to the end of the square tube 18.

[0041] When the present invention is used to produce PP sheets 36, molten plastic is extruded from an extruder through extrusion tube 2 into extrusion barrel 1. The molten plastic entering extrusion barrel 1 and passing through square barrel 18 forms PP sheets 36 with square holes 37. Simultaneously, the sidewalls of PP sheets 36 between any two adjacent square barrels 18 are separated into two vertical layers by corresponding pressing plates 30. Cutting strips A 34 and B 35 on the corresponding sides, as the PP sheets 36 continue to be extruded, cut the transverse partitions 38 separated by pressing plates 30 from above and below. Motor A8 is then started, driving the pressing rollers 29 on all the square barrels 18 along their corresponding guide rails 27 from near the ends of the square barrels 18 toward the extrusion ends of the transverse partitions 38 separated by pressing plates 30, cutting strips A 34, and cutting strips B 35. Ultimately, the extrusion ends of the transverse partitions 38 separated by pressing plates 30, cutting strips A 34, and cutting strips B 35 are pressed and bonded to a sidewall of the square holes 37.

[0042] Then, the motor B12 is started to drive all the racks C33 to move. All the racks C33 drive the corresponding pressure plates 30 90 degrees toward the other side wall of the square hole 37 through the corresponding gears C32. The pressure plates 30 cut off the horizontal partition 38 separated by the pressure plate 30, the cutting strip A34 and the cutting strip B35 from the end of the square tube 18 and swing it sideways to the other side wall of the square hole 37 and bond it to form a partition reinforcement for the square hole 37.

[0043] The soft strip 31 at the end of the pressing plate 30 is used to facilitate the pressing plate 30 to swing sideways to the other side wall of the square hole 37 and to press and bond the transverse partition 38 which is still in a soft state.

[0044] In summary, the beneficial effects of the present invention are as follows: the present invention extrude the PP board 36 with squares through the gaps between each square tube 18 in the extrusion tube 1 and between the square tube 18 and the extrusion tube 1, separates a section of the longitudinal partition extruded from the gap between each square tube 18 and the adjacent square tubes 18 by the pressing plate 30 on each square tube 18, and then presses one end of the partition separated by the pressing plate 30 tightly and bonds it to the side wall on one side of the square by the corresponding pressing roller 29, and finally swings the partition with one end bonded to the wall of one side of the square to the lateral direction by the pressing plate 30 and bonds it to the other side wall of the square, thereby forming a longitudinally spaced lateral reinforcement partition in each square, thereby improving the bending strength of the PP board 36 along the longitudinal direction of the square.

Claims

1. A PP board manufacturing equipment, characterized by: It includes an extrusion barrel, an extrusion tube, a motor A, a motor B, a cylinder, a square barrel, a guide rail, a pressure roller, and a pressure plate. The extrusion barrel, which is installed at the end of the extrusion tube and has a rectangular cross-section, is equipped with a number of hollow cylinders evenly spaced laterally via a fixed rod. A square barrel with a hole above a molded PP board is installed at the end of each cylinder. Each square barrel is hinged with a pressure plate that divides the side wall of the plastic extruded between it and the adjacent square barrel into two layers, and cuts off one layer and glues it horizontally into the corresponding square hole to form a transverse partition. The pressure plate is driven by the motor B outside the extrusion barrel. A slider slides on the arc-shaped guide rail at the end of the square barrel. The slider has a pressure roller that presses the extruded end of one layer of plastic cut off by the pressure plate and glues it to the other layer. The pressure roller is driven by the motor A outside the extrusion barrel. The pressing plate is hinged to the end of the corresponding guide rail, and a soft strip is installed at the end of the pressing plate to press and bond the cut end of the transverse partition to the wall of the corresponding square hole; cutting strips A and B are installed on one side wall of the square tube to separate the upper and lower sides of the transverse partition separated by the pressing plate.

2. The PP board manufacturing equipment according to claim 1, characterized in that: A baffle A driven by a motor A slides on the outside of the extrusion cylinder along the extrusion direction of the PP board. A driving rod A corresponding to the cylinder is installed on the baffle A. The driving rod A slides in the chute A on the extrusion cylinder and the chute C on the corresponding cylinder; each driving rod A is connected to the corresponding slider through a steel wire sliding in the guide sleeve A.

3. The manufacturing equipment of a PP board according to claim 2, characterized in that: A rack A is mounted on the baffle A, and the rack A meshes with a gear A on the output shaft of the motor A.

4. The manufacturing equipment of a PP board according to claim 2, characterized in that: The driving rod A is provided with a baffle C for shielding and sealing the corresponding sliding groove C.

5. The manufacturing equipment of a PP board according to claim 1, characterized in that: A baffle B driven by a motor B slides on the outside of the extrusion cylinder along the extrusion direction of the PP board. A driving rod C corresponding to the cylinder is installed on the baffle B. The driving rod C slides in the chute B on the extrusion cylinder and the chute D on the corresponding cylinder. Each driving rod C is connected to a rack C through the driving rod B sliding in the guide sleeve B, and the rack is engaged with the gear C on the hinge shaft where the corresponding pressure plate is located.

6. The manufacturing equipment of PP board according to claim 5, characterized in that: The baffle B is provided with a rack B, which meshes with a gear B on the output shaft of the motor B.

7. The manufacturing equipment of PP board according to claim 5, characterized in that: The driving rod C is provided with a baffle D for shielding and sealing the corresponding sliding groove D.

8. The PP board manufacturing equipment according to claim 1, characterized in that: The initial end of the cylinder has a tapered tip that does not retain molten plastic; One side of the fixing rod is provided with a blade portion for preventing the molten plastic from being retained, and the other side of the fixing rod is provided with a blade portion for facilitating the rapid fusion of the molten plastic separated by the fixing rod.

9. A method for preparing a PP board using the PP board manufacturing equipment according to claim 1, characterized in that: The preparation method is as follows:

1. Extruding molten plastic into an extrusion barrel through an extrusion tube; 2. The molten plastic in the extrusion barrel passing through the square barrel forms a PP plate with a square hole, and the plastic side wall between any two adjacent square barrels is separated into two layers by the corresponding pressing plate, and at the same time, the cutting strip A and the cutting strip B cut off the layer separated by the pressing plate from the upper and lower sides; 3. Starting the motor A to drive the pressing roller to press and bond the extruded end of the separated layer to one side wall of the square hole; 4. Starting the motor B to drive the pressing plate to cut off the separated layer from the end of the square barrel and swing it sideways to the other side wall of the square hole and bond it to form a reinforced partition of the square hole.

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