Extrusion molding device for large-size wood-plastic composite board

Abstract

The invention belongs to the technical field of high polymer material forming and processing, and discloses a large-size wood-plastic composite board extrusion molding device which comprises a box body, a stirring barrel is arranged at the top of the box body, an extrusion pipe is fixedly connected to one side of the stirring barrel, and a mounting box is arranged on one side of the box body; a supporting frame is fixedly connected to the top of the mounting box, an electric push rod is fixedly connected to the bottom of the supporting frame, an extrusion plate is fixedly arranged at the bottom of the electric push rod, an extrusion box is arranged at the top of the mounting box, and a vibration mechanism used for driving the extrusion box to vibrate is arranged on the mounting box. Through cooperation of an extrusion plate, an extrusion box, a vibration mechanism and other structures, extruded mixed materials are vibrated and flattened, and the problems that before extrusion of an existing device, due to the fact that the extruded mixed materials possibly have bubbles due to non-uniform mixing or are accumulated together, the density of extruded plates is prone to being different, and the extrusion quality is poor are solved. And the quality problem of the wood-plastic composite board is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of polymer material forming and processing, in particular to an extrusion device for a large-size wood-plastic composite board. Background Art

[0002] Wood-plastic composite materials are a new type of composite materials that have flourished in recent years at home and abroad. They refer to the use of polyethylene, polypropylene and polyvinyl chloride instead of the usual resin adhesives, mixed with more than 50% of wood powder, rice husks, straw and other waste plant fibers to form new wood materials, and then processed by plastic processing techniques such as extrusion, molding, injection molding, etc. to produce boards or profiles. The boards formed by mixing plastic and wood powder in a certain proportion and then hot extruding are called extruded wood-plastic composite boards.

[0003] For example, the invention with publication number CN107932874A discloses an extrusion device for large-size wood-plastic composite boards, including a workbench, an extruder is arranged on the top of the workbench, a mixing hydraulic molding tank is arranged in the extruder, a mixed liquid discharge port is arranged on the top of one end of the mixing hydraulic molding tank, a rotating motor is arranged on the top of the mixed liquid discharge port, a turbine blade is arranged on the top of the rotating motor, a rotating shaft is arranged at the input end of the turbine blade, the input end of the rotating shaft is connected to the output end of the rotating motor, a feed port is arranged on the top of the turbine blade, and the feed port is arranged directly below the discharge port, a first hydraulic cylinder is arranged on one side of the extruder, and a spiral compression molding rod is arranged at the output end of the first hydraulic cylinder. The present invention uses an extruder to preliminarily extrude the mixture into a board shape, has high melt plasticization and extrusion efficiency, and improves work efficiency. In addition, the present invention has a simple structure, is safe to use, has a good mixing effect, and has high board quality.

[0004] When the above device uses the extrusion plate to shape the extruded mixture, since the extruded mixture may have bubbles due to uneven mixing, the existing device does not perform defoaming treatment, which easily leads to different densities of the extruded boards, reducing the quality of the wood-plastic composite board. At the same time, the existing mixture is easy to pile up together during extrusion, and the subsequent extrusion through the extrusion plate is easy to cause uneven thickness of the board.

[0005] Therefore, an extrusion device for large-size wood-plastic composite boards is proposed to solve the problems raised by the background technology. Summary of the invention

[0006] In order to solve the problem in the above background technology that the mixed material extruded by the existing device before extrusion may contain bubbles or pile up due to uneven mixing, which may easily lead to different densities of the extruded boards and reduce the quality of the wood-plastic composite board, the present invention provides an extrusion device for large-sized wood-plastic composite boards.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an extrusion device for large-size wood-plastic composite panels, comprising a box body, a stirring barrel is arranged on the top of the box body, an extrusion tube is fixedly connected to one side of the stirring barrel, a mounting box is arranged on one side of the box body, a support frame is fixedly connected to the top of the mounting box, an electric push rod is fixedly connected to the bottom of the support frame, an extrusion plate is fixedly arranged on the bottom of the electric push rod, an extrusion box is arranged on the top of the mounting box, and a vibration mechanism for driving the extrusion box to vibrate is arranged on the mounting box;

[0008] The bottom of the extrusion box is fixedly connected with a protrusion, the top of the installation box is provided with a slot, the protrusion is slidably connected to the inner wall of the slot, the bottom of the extrusion box is fixedly connected with a spring, and the bottom of the spring is fixedly connected to the top of the installation box.

[0009] Preferably, the vibration mechanism includes a first connecting rod, the first connecting rod is located inside the installation box, the first connecting rod is fixedly connected to a sliding frame on the side away from the box body, a sliding block is slidably arranged on the sliding frame, a second connecting rod is fixedly connected at the center of the sliding block, the second connecting rod is fixedly connected to a rotating shaft at the center of one end away from the sliding block, and a worm gear is fixedly installed on the rotating shaft.

[0010] Preferably, a slide groove is provided on a side of the installation box away from the box body, a fixing rod is fixedly connected to the inner wall of the installation box on a side close to the box body, and a support plate is fixedly connected to the side of the installation box close to the slide groove.

[0011] Preferably, the first connecting rod is hinged to the fixed rod, a control motor is fixedly provided on the output shaft of the worm gear, the control motor is fixedly connected to the support plate, and the sliding frame slides in the sliding groove.

[0012] Preferably, a cleaning mechanism is provided on the side of the extrusion box, and the cleaning mechanism is used to clean the extrusion plate.

[0013] Preferably, the cleaning mechanism includes a worm, which is meshed with a worm wheel, the bottom of the worm is rotatably connected to a support plate, the top of the worm is fixedly connected to a drive shaft, a baffle is rotatably connected to the drive shaft, the top of the drive shaft is fixedly connected to a circular plate, and a cleaning box is fixedly connected to the side of the circular plate close to the extrusion box.

[0014] Preferably, the circular plate is located on the top of the baffle, and the cleaning box abuts against the baffle.

[0015] Preferably, a scraper is fixedly connected at the center of the cleaning box, the scraper is triangular in shape, and the top of the scraper contacts and slides with the bottom of the extrusion plate.

[0016] Preferably, through grooves are provided on both symmetrical sides of the cleaning box, a movable groove is provided on the top of the through groove, and a closing plate is slidably provided in the movable groove.

[0017] Preferably, the extrusion tube is located at the top of the extrusion box, and a stirring blade is arranged inside the stirring barrel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention facilitates the vibration and paving of the extruded mixed material by arranging the cooperation of structures such as the extrusion plate, the extrusion box and the vibration mechanism. The vibration mechanism is used to drive the extrusion box to vibrate, and the forward and reverse rotation of the motor is controlled to drive the worm gear to rotate forward and reverse, and it can only rotate 180 degrees, thereby driving the second connecting rod to rotate, so that the sliding block slides along the sliding frame and drives the sliding frame to adjust its angle, so that it rotates along the fixed rod, and then drives the top convex block to move up and down, thereby reciprocating and driving the top extrusion box to vibrate, so that the internal mixed material is defoamed and evenly laid inside the extrusion box, avoiding material accumulation and inconvenience for later extrusion, and solving the problem that the existing device may cause different densities of the extruded board due to uneven mixing before extrusion due to bubbles or accumulation. The quality problem of the wood-plastic composite board is reduced.

[0020] The invention facilitates the rapid cleaning of the extrusion plate by arranging the cooperation of structures such as a worm, a worm wheel and a cleaning box. By utilizing the transmission meshing between the worm wheel and the worm, the worm is driven to rotate during the rotation of the worm wheel, and then the driving shaft on the top is driven to rotate synchronously, and the circular plate on the driving shaft and the cleaning box are driven to rotate. Since the worm wheel rotates forward and reversely and rotates 180 degrees, the worm, the driving shaft and the cleaning box can be driven to rotate in a semi-arc shape. During the rotation process, the cleaning box takes the driving shaft as the center of the circle and the length of the cleaning box as the radius, and performs a semi-arc movement to scrape and clean the bottom of the extrusion plate, thereby solving the problem that the extrusion plate will slowly carry materials during the extrusion process, making the surface of the extrusion plate uneven, causing uneven force inside the extruded wood-plastic composite board, and cracking.

[0021] The present invention facilitates the unified collection and processing of cleaned impurities by arranging the cooperation of structures such as the scraper, the through groove and the closing plate. The impurities on the bottom of the extrusion plate are quickly scraped off by the scraper, and the scraped impurities fall into the cleaning box under the influence of their own gravity for unified collection. After use, the closing plate is manually pulled to slide up and down along the moving groove, and the through groove is opened to uniformly clean the impurities inside the cleaning box. After cleaning, the closing plate is moved to the bottom of the moving groove for clamping, which is convenient for collecting impurities again at a later time, thereby solving the problem that the scraped impurities are not convenient to collect and directly fall on the surface of the installation box to cause clutter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the cooperation between the vibration mechanism and the cleaning mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the cleaning box of the present invention;

[0026] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0027] Figure 6 for Figure 2 Enlarged view of point B in the middle.

[0028] In the figure: 1. box body; 2. mixing barrel; 21. extrusion tube; 3. installation box; 31. slide groove; 32. fixing rod; 33. support plate; 4. support frame; 41. electric push rod; 5. extrusion plate; 6. extrusion box; 61. bump; 62. spring; 7. vibration mechanism; 71. first connecting rod; 72. sliding frame; 73. sliding block; 74. second connecting rod; 75. worm gear; 76. control motor; 8. cleaning mechanism; 81. worm; 82. driving shaft; 83. baffle; 84. round plate; 85. cleaning box; 851. scraper; 852. through groove; 853. movable groove; 854. closing plate. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 6As shown, the present invention provides an extrusion device for a large-size wood-plastic composite board, a box body 1, a stirring barrel 2 is arranged on the top of the box body 1, an extrusion tube 21 is fixedly connected to one side of the stirring barrel 2, a mounting box 3 is arranged on one side of the box body 1, a support frame 4 is fixedly connected to the top of the mounting box 3, an electric push rod 41 is fixedly connected to the bottom of the support frame 4, an extrusion plate 5 is fixedly arranged on the bottom of the electric push rod 41, an extrusion box 6 is arranged on the top of the mounting box 3, the extrusion tube 21 is located at the top of the extrusion box 6, a stirring blade is arranged inside the stirring barrel 2, and a vibration mechanism 7 for driving the extrusion box 6 to vibrate is arranged on the mounting box 3; a convex block 61 is fixedly connected to the bottom of the extrusion box 6, a notch is opened on the top of the mounting box 3, the convex block 61 is slidably connected to the inner wall of the notch, a spring 62 is fixedly connected to the bottom of the extrusion box 6, and the bottom of the spring 62 is fixedly connected to the top of the mounting box 3.

[0031] The above scheme is adopted: when in use, the material is poured into the mixing barrel 2, stirred by the stirring blade, and quickly mixed, and then the mixed material is introduced into the extrusion box 6 along the extrusion tube 21. In order to avoid the problem of uneven material extrusion caused by material accumulation or bubbles in the mixture, the extrusion box 6 can be driven by the vibration mechanism 7 to move up and down along the installation box 3. During the movement, the spring 62 plays a buffering and shock-absorbing effect to prevent the extrusion box 6 from being damaged during vibration. After the extrusion is completed, the electric push rod 41 is used to drive the extrusion plate 5 to move downward to extrude and shape the material inside the extrusion box 6, thereby completing the production of the entire plate.

[0032] like Figure 3 As shown, the vibration mechanism 7 includes a first connecting rod 71, which is located inside the installation box 3, and a sliding frame 72 is fixedly connected to the side of the first connecting rod 71 away from the box body 1, and a sliding block 73 is slidably arranged on the sliding frame 72, and a second connecting rod 74 is fixedly connected to the center of the sliding block 73, and a rotating shaft is fixedly connected to the center of one end of the second connecting rod 74 away from the sliding block 73, and a worm gear 75 is fixedly installed on the rotating shaft, a sliding groove 31 is provided on the side of the installation box 3 away from the box body 1, a fixing rod 32 is fixedly connected to the inner wall of the installation box 3 close to the box body 1, and a support plate 33 is fixedly connected to the side of the installation box 3 close to the sliding groove 31, the first connecting rod 71 is hinged to the fixing rod 32, a control motor 76 is fixedly arranged on the output shaft of the worm gear 75, and the control motor 76 is fixedly connected to the support plate 33, and the sliding frame 72 slides in the sliding groove 31.

[0033] The above scheme is adopted: the vibration mechanism 7 is used to drive the extrusion box 6 to vibrate, and the control motor 76 is used to drive the worm gear 75 to rotate forward and reverse, and it can only rotate 180 degrees, thereby driving the second connecting rod 74 to rotate, so that the sliding block 73 slides along the sliding frame 72 and drives the sliding frame 72 to adjust its angle, so that it rotates along the fixed rod 32, and then drives the top protrusion 61 to move up and down, thereby reciprocating, driving the top extrusion box 6 to vibrate, so that the internal mixed material is defoamed and evenly laid inside the extrusion box 6, avoiding material accumulation and inconvenience in later extrusion.

[0034] like Figure 4 As shown, a cleaning mechanism 8 is provided on the side of the extrusion box 6, and the cleaning mechanism 8 is used to clean the extrusion plate 5. The cleaning mechanism 8 includes a worm 81, which is meshed with the worm wheel 75, and the bottom of the worm 81 is rotatably connected to the support plate 33. The top of the worm 81 is fixedly connected to a driving shaft 82, and a baffle 83 is rotatably connected to the driving shaft 82. A circular plate 84 is fixedly connected to the top of the driving shaft 82. A cleaning box 85 is fixedly connected to the side of the circular plate 84 close to the extrusion box 6, and the circular plate 84 is located on the top of the baffle 83. The cleaning box 85 abuts against the baffle 83. A scraper 851 is fixedly connected to the center of the cleaning box 85. The scraper 851 is triangular in shape, and the top of the scraper 851 contacts and slides with the bottom of the extrusion plate 5. Through grooves 852 are provided on both symmetrical sides of the cleaning box 85, and a movable groove 853 is provided on the top of the through groove 852. A closing plate 854 is slidably provided in the movable groove 853.

[0035] The above scheme is adopted: by using the cleaning mechanism 8 to realize the rapid cleaning of the extrusion plate 5, it is avoided that the extrusion plate 5 will slowly carry the material during the extrusion process of the extrusion plate 5, making the surface of the extrusion plate 5 uneven, causing the internal force of the extruded wood-plastic composite board to be uneven, and cracking. By using the transmission engagement between the worm wheel 75 and the worm 81, the worm 81 is driven to rotate during the rotation of the worm wheel 75, and then the top driving shaft 82 is driven to rotate synchronously, and the circular plate 84 and the cleaning box 85 on the driving shaft 82 are driven to rotate. Since the worm wheel 75 rotates forward and reversely and is 180 degrees Rotation can drive the worm 81, the drive shaft 82 and the cleaning box 85 to rotate in a semi-arc shape. During the rotation, the cleaning box 85 takes the drive shaft 82 as the center and the length of the cleaning box 85 as the radius, and makes a semi-arc motion to scrape and clean the bottom of the extrusion plate 5. During the scraping process, the extrusion plate 5 is driven downward by the electric push rod 41 to contact the scraper 851. During the scraping process of the scraper 851, the scraped impurities enter the cleaning box 85 for collection. After use, the closing plate 854 is manually pulled to open the through slot 852 to uniformly clean the impurities inside the cleaning box 85.

[0036] Working principle and use process of the present invention: When using the device, the material is poured into the mixing barrel 2, stirred by the stirring blade, and quickly mixed, and then the mixed material is introduced into the extrusion box 6 along the extrusion tube 21. In order to avoid the problem of uneven material extrusion caused by accumulation of materials or bubbles in the mixture, the extrusion box 6 can be driven by the vibration mechanism 7 to move up and down along the installation box 3, and the worm gear 75 can be driven by the control motor 76 to rotate forward and reverse, and can only rotate 180 degrees, thereby driving the second connecting rod 74 to rotate, so that the sliding block 73 slides along the sliding frame 72 and drives the sliding frame 72 to adjust its angle, so that it rotates along the fixed rod 32, thereby driving the top protrusion 61 to move up and down, thereby reciprocating and driving the top extrusion box 6 to vibrate, so that the internal mixed material is defoamed and evenly laid inside the extrusion box 6, which is convenient for later extrusion. During the movement, the spring 62 plays a buffering and shock-absorbing effect to prevent the extrusion box 6 from being damaged during vibration. After the extrusion is completed, the electric push rod 41 is used to drive the extrusion plate 5 to move downward to extrude and shape the material inside the extrusion box 6, thereby completing the production of the entire plate;

[0037] After use, in order to avoid the problem that the extrusion plate 5 will slowly carry the material during the extrusion process, making the surface of the extrusion plate 5 uneven, causing the extruded wood-plastic composite board to be unevenly stressed and cracked, the worm gear 75 is meshed with the worm 81, and the worm 81 is driven to rotate during the rotation of the worm gear 75, thereby driving the top drive shaft 82 to rotate synchronously, driving the circular plate 84 on the drive shaft 82 and the cleaning box 85 to rotate. Since the worm gear 75 rotates forward and reversely and rotates 180 degrees, it can drive the worm 81, the drive shaft 82 and the cleaning box 85 to rotate in a semi-arc shape. During the rotation, the cleaning box 85 takes the drive shaft 82 as the center and the length of the cleaning box 85 as the radius, and makes a semi-arc motion to the extrusion plate 5. The bottom is scraped and cleaned. During the scraping process, the electric push rod 41 is used to drive the extrusion plate 5 to move downward and contact the scraper 851. During the scraping process of the scraper 851, the scraped impurities enter the cleaning box 85 for collection. After use, the closing plate 854 is manually pulled to open the through slot 852 to uniformly clean the impurities inside the cleaning box 85. During the downward pressing process of the extrusion plate 5, the top drive shaft 82 is driven by the rotating worm 81 to rotate the entire circular plate 84 and the cleaning box 85 to a position parallel to the baffle 83, so as not to affect the normal extrusion of the extrusion plate 5. When the cleaning box 85 is needed later, it is rotated to the bottom of the extrusion plate 5 so that it is in a vertical direction with the baffle 83, and the baffle 83 has a limiting effect on it.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-size wood-plastic composite board extrusion device, comprising a box (1), characterized in that: A stirring barrel (2) is arranged on the top of the box body (1), an extrusion tube (21) is fixedly connected to one side of the stirring barrel (2), a mounting box (3) is arranged on one side of the box body (1), a support frame (4) is fixedly connected to the top of the mounting box (3), an electric push rod (41) is fixedly connected to the bottom of the support frame (4), an extrusion plate (5) is fixedly arranged on the bottom of the electric push rod (41), an extrusion box (6) is arranged on the top of the mounting box (3), and a vibration mechanism (7) for driving the extrusion box (6) to vibrate is arranged on the mounting box (3); The bottom of the extrusion box (6) is fixedly connected with a protrusion (61), the top of the installation box (3) is provided with a notch, the protrusion (61) is slidably connected to the inner wall of the notch, the bottom of the extrusion box (6) is fixedly connected with a spring (62), and the bottom of the spring (62) is fixedly connected to the top of the installation box (3).

2. The extrusion device for large-size wood-plastic composite panels according to claim 1 is characterized in that: The vibration mechanism (7) comprises a first connecting rod (71), the first connecting rod (71) is located inside the installation box (3), a side of the first connecting rod (71) away from the box body (1) is fixedly connected to a sliding frame (72), a sliding block (73) is slidably arranged on the sliding frame (72), a second connecting rod (74) is fixedly connected at the center of the sliding block (73), a rotating shaft is fixedly connected at the center of one end of the second connecting rod (74) away from the sliding block (73), and a worm gear (75) is fixedly mounted on the rotating shaft.

3. The extrusion device for large-size wood-plastic composite panels according to claim 1 is characterized in that: A sliding groove (31) is provided on a side of the installation box (3) away from the box body (1), a fixing rod (32) is fixedly connected to the inner wall of the installation box (3) on a side close to the box body (1), and a support plate (33) is fixedly connected to the side of the installation box (3) close to the sliding groove (31).

4. The extrusion device for large-size wood-plastic composite panels according to claim 2, characterized in that: The first connecting rod (71) is hinged to the fixed rod (32), a control motor (76) is fixedly arranged on the output shaft of the worm gear (75), the control motor (76) is fixedly connected to the support plate (33), and the sliding frame (72) slides in the sliding groove (31).

5. The extrusion device for large-size wood-plastic composite panels according to claim 1, characterized in that: A cleaning mechanism (8) is arranged on the side of the extrusion box (6), and the cleaning mechanism (8) is used to clean the extrusion plate (5).

6. The extrusion device for large-size wood-plastic composite panels according to claim 5, characterized in that: The cleaning mechanism (8) comprises a worm (81), the worm (81) meshing with the worm wheel (75), the bottom of the worm (81) being rotatably connected to the support plate (33), the top of the worm (81) being fixedly connected to a drive shaft (82), the drive shaft (82) being rotatably connected to a baffle (83), the top of the drive shaft (82) being fixedly connected to a circular plate (84), and a cleaning box (85) being fixedly connected to a side of the circular plate (84) close to the extrusion box (6).

7. The extrusion device for large-size wood-plastic composite panels according to claim 6, characterized in that: The circular plate (84) is located on the top of the baffle (83), and the cleaning box (85) is in contact with the baffle (83).

8. The extrusion device for large-size wood-plastic composite panels according to claim 6, characterized in that: A scraper (851) is fixedly connected at the center of the cleaning box (85), and the scraper (851) is triangular in shape. The top of the scraper (851) contacts and slides with the bottom of the squeezing plate (5).

9. The extrusion device for large-size wood-plastic composite panels according to claim 7, characterized in that: The cleaning box (85) is provided with through grooves (852) on both symmetrical sides, a movable groove (853) is provided on the top of the through groove (852), and a closing plate (854) is slidably arranged in the movable groove (853).

10. The extrusion device for large-size wood-plastic composite panels according to claim 1, characterized in that: The extrusion tube (21) is located at the top of the extrusion box (6), and a stirring blade is arranged inside the stirring barrel (2).

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