A plastic hollow board continuous extruder

Abstract

The present invention belongs to the technical field of plastic molding, and specifically relates to a continuous extruder for plastic hollow plates, including an extruder body, a plurality of sub-extrusion pieces, a plurality of molding dies and a plurality of slitting and transmission devices, wherein the plurality of sub-extrusion pieces are installed at the output of the extruder body, and are all connected with the extrusion head of the extruder body, and the plurality of molding dies are correspondingly installed at the output of the plurality of sub-extrusion pieces. The present invention relates to a continuous extruder for plastic hollow plates, wherein extrusion heads of different specifications are first installed on a plurality of sub-extrusion pieces as required, raw materials are extruded through the extruder body and placed on a plurality of sub-extrusion pieces, and then the raw materials are rotated and transmitted through the extrusion screw, and the raw materials are extruded through the extrusion heads of different specifications, and then molded through a plurality of molding dies, so as to realize the simultaneous production of plastic hollow plates of different specifications, and the extrusion screw is provided so as to perform secondary stirring and transmission on the raw materials during transmission, so that the raw materials are mixed more evenly.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic molding, and in particular relates to a continuous extruder for plastic hollow plates. Background Art

[0002] Plastic hollow board, also called hollow partition board and plastic hollow board, is a new type of material that is light in weight, non-toxic, pollution-free, waterproof, shockproof, anti-aging, corrosion-resistant and colorful. Compared with cardboard structural products, hollow board has the advantages of moisture-proof and corrosion-resistant.

[0003] When the existing extruder produces plastic hollow panels, the hot melt plastic colloid is first extruded into the whole platform by the extruder, and then the formed board is flattened, embossed and cut to realize the production and processing of the plastic hollow panel. However, when producing hollow panels, since the extruder can only extrude boards with fixed width and thickness specifications, when it is necessary to produce boards with different widths and thickness specifications, the extruder needs to be replaced, which affects production efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a continuous extruder for plastic hollow plates, which can simultaneously produce plastic hollow plates of different specifications.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a continuous extruder for a plastic hollow plate, comprising an extruder body, a plurality of sub-extrusion pieces, a plurality of molding dies and a plurality of slitting and transmission devices, wherein the plurality of sub-extrusion pieces are installed at the output of the extruder body and are all connected to the extrusion head of the extruder body, the plurality of molding dies are correspondingly installed at the output of the plurality of sub-extrusion pieces, and the plurality of slitting and transmission devices are correspondingly installed at the output of the plurality of molding dies;

[0006] Preferably, the sub-rotating extruder includes a transmission pipe, an extrusion screw, a driving motor and an extrusion head. The transmission pipe is connected to the extruder body, the extrusion screw is rotatably arranged in the transmission pipe, the extrusion head is installed outside the transmission pipe and is transmission-connected to the extrusion screw, and the extrusion head is installed at the output port of the transmission pipe and is connected to the transmission pipe.

[0007] Preferably, the extrusion port of the extrusion head is provided with a plurality of blocking blocks, and the extrusion gap between adjacent blocking blocks is arranged to decrease from the side of the extrusion port toward the middle of the extrusion port, and the diameter of the blocking blocks on both sides of the extrusion port of the extrusion head is larger than the diameter of the blocking blocks located in the middle of the extrusion port.

[0008] Preferably, the molding die comprises a bracket, a lower molding plate and an upper molding plate, the lower molding plate is fixedly mounted on the bracket, a lifting and adjusting cylinder is mounted on the bracket, the output end of the lifting and adjusting cylinder is arranged toward the lower molding plate, the upper molding plate is mounted on the output end of the lifting and adjusting cylinder, and the molding surfaces of the lower molding plate and the upper molding plate are both provided with suction parts.

[0009] Preferably, two shaping plates are installed between the lower shaping plate and the upper shaping plate, the two shaping plates are symmetrically arranged, and air holes are provided on the facing surfaces of the two shaping plates. The shaping plates are provided with air grooves respectively connected to the air suction part of the lower shaping plate or the air suction part of the upper shaping plate, and the air grooves are connected to the air holes.

[0010] Preferably, the air suction part includes a transverse groove and a grid-like groove, and a plurality of air suction ports are provided in the transverse groove and the grid-like groove. The two shaping plates are respectively covered on the opposite ends of the transverse groove and the grid-like groove, and the air groove is connected to the air suction port.

[0011] Preferably, a traction frame is installed between the forming mold and the slitting and transmission equipment, and the traction frame includes a support frame, an upper conduction roller group and a lower conduction roller group, and the upper conduction roller group and the lower conduction roller group are both installed on the support frame, and there is a transmission gap between the upper conduction roller group and the lower conduction roller group for transmitting the hollow plate; the upper conduction roller group includes a plurality of upper conduction rollers, and the plurality of upper conduction rollers are equidistantly arranged along the length of the support frame, and the lower conduction roller group includes a plurality of lower conduction rollers, and the plurality of lower conduction rollers are equidistantly arranged along the length of the support frame.

[0012] Preferably, the slitting and transmission equipment comprises a transmission frame and a cutting machine, and synchronous screw drive members are respectively installed on the corresponding two sides of the transmission frame, and the two ends of the bottom of the cutting machine are respectively installed on the driving ends of the two synchronous screw drive members.

[0013] Preferably, the cutting machine comprises a lifting frame, the lifting frame is provided with two support columns respectively mounted on the driving ends of two synchronous screw drive members, the output end of the lifting frame is arranged toward the transmission frame, and a heat sealing knife is installed at the lifting end of the lifting frame.

[0014] Preferably, a plate stacking device is installed at the output end of the transmission frame, and the plate stacking device includes a stacking frame, a carrying plate, a lifting drive assembly and a double-layer transmission track. The stacking frame is located at the output of the transmission frame, the lifting drive assembly is installed in the stacking frame, the carrying plate is placed on the lifting end of the lifting drive assembly, a track wheel that moves along the double-layer transmission track is installed under the carrying plate, and a blocking rod is installed on the side of the carrying plate facing the double-layer transmission track, and the height of the blocking rod is lower than the height of the double-layer transmission track.

[0015] Preferably, the lifting drive assembly includes a transmission chain, a transmission wheel and a driving machine. The transmission wheel is rotatably installed on the stacking rack, the transmission chain is wound around the transmission wheel and is transmission-connected to the transmission wheel. The transmission chain is provided with a support plate along its length direction, the bearing plate is placed on the support plate, and the driving machine is installed on the stacking rack and is coaxially transmission-connected to the transmission wheel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention discloses a continuous extruder for plastic hollow plates. First, extrusion heads of different specifications are installed on a plurality of sub-extrusion pieces as required. Raw materials are extruded through an extruder body and placed on the plurality of sub-extrusion pieces. The raw materials are then rotated and transmitted through an extrusion screw. The raw materials are extruded through extrusion heads of different specifications and then formed through a plurality of forming dies, thereby realizing the simultaneous production of plastic hollow plates of different specifications. In addition, the extrusion screw is arranged so that the raw materials can be stirred and transmitted for a second time while being transmitted, so that the raw materials are mixed more evenly.

[0018] 2. The present invention provides a continuous extruder for plastic hollow plates, so that the extruded plastic plates are hollowed out by the blocking of the blocking blocks, and the extrusion gaps on both sides of the extrusion port are larger and the diameters of the blocking blocks on both sides are larger than the diameter of the middle blocking block, so that the thickness of the walls on both sides of the plastic plate and the hollow diameter are larger than the thickness of the walls and the hollow diameter of the middle part of the plastic plate. Since the two sides of the plastic plate are greatly affected by the external air after extrusion, they will shrink more, so the walls on both sides of the plastic plate and the hollow diameter are larger and have more shrinkage space, thereby preventing the problem that the walls on both sides of the plastic plate that shrink more and the hollow diameter will be too small, resulting in deformation of the overall plastic plate.

[0019] 3. The continuous extruder for plastic hollow plates of the present invention simultaneously sucks air through two shaping plates, so that both sides of the plastic plate are sucked and pulled by the shaping plates to form an arc, thereby having better pressure resistance than vertically arranged straight edges, and the edge arc also prevents workers from being cut during handling.

[0020] 4. The present invention provides a continuous extruder for plastic hollow plates. When cutting, two synchronous screw drive components drive the cutting machine to move along with the plastic plate, thereby preventing the plastic plate to be cut from hitting the cutting blade and causing extrusion, which may easily lead to deformation.

[0021] 5. The present invention relates to a continuous extruder for plastic hollow plates. An empty carrier plate is transferred through the upper layer of a double-layer transmission track and placed on a lifting drive assembly in a stacking frame for stacking. During the stacking process, the lifting drive assembly drives the carrier plate to descend. After the stacking is completed, the carrier plate is output through the lower layer transmission track of the double-layer transmission track, thereby achieving automatic stacking and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the continuous extruder of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the split extrusion piece of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the split extrusion piece of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the extrusion head of the present invention;

[0026] Figure 5 It is an enlarged structural schematic diagram of the blocking block of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the molding die of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the slitting and transmission equipment of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the shaping plate of the present invention;

[0030] Fig. 9 It is a schematic structural diagram of the plate stacking device of the present invention.

[0031] Markings in the figure: 1. Extruder body; 2. Rotary extrusion piece; 3. Forming mold; 4. Slitting and transmission equipment; 5. Transmission pipe; 6. Extrusion screw; 7. Driving motor; 8. Extrusion head; 9. Blocking block; 10. Bracket; 11. Lower forming plate; 12. Upper forming plate; 13. Forming plate; 14. Air hole; 15. Traction frame; 16. Transmission frame; 17. Cutting machine; 18. Synchronous screw drive; 19. Plate stacking equipment; 20. Stacking frame; 21. Loading plate; 22. Lifting drive assembly; 23. Double-layer transmission track; 24. Transmission chain; 25. Transmission wheel; 26. Driving machine; 27. Blocking rod; 28. Extrusion gap; 29. ​​Suction part; 30. Air groove. DETAILED DESCRIPTION

[0032] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0033] like Figure 1-Figure 9As shown, the present embodiment provides a continuous extruder for plastic hollow plates, comprising an extruder body 1, a plurality of sub-extrusion pieces 2, a plurality of molding dies 3 and a plurality of slitting and conveying devices 4, wherein the plurality of sub-extrusion pieces 2 are installed at the output of the extruder body 1, and are all connected with the extrusion head 8 of the extruder body 1, and the plurality of molding dies 3 are correspondingly installed at the output of the plurality of sub-extrusion pieces 2, and the plurality of slitting and conveying devices 4 are correspondingly installed at the output of the plurality of molding dies 3; specifically, the sub-extrusion piece 2 comprises a transmission pipe 5, an extrusion screw 6, a driving motor 7 and an extrusion head 8, the transmission pipe 5 is connected with the extruder body 1, the extrusion screw 6 is rotatably arranged in the transmission pipe 5, the extrusion head 8 is installed outside the transmission pipe 5 and is transmission-connected with the extrusion screw 6, and the extrusion head 8 is installed at the output port of the transmission pipe 5 and is connected with the transmission pipe 5. First, different specifications of extrusion heads 8 are installed on multiple sub-extrusion pieces 2 as needed, and the raw materials are extruded through the extruder body 1 and placed on the multiple sub-extrusion pieces 2, and then the extrusion screw 6 is rotated and transmitted. The raw materials are extruded through the extrusion heads 8 of different specifications, and then formed through multiple molding dies 3, so that one point and multiple points can produce plastic hollow plates of different specifications at the same time, and the extrusion screw 6 is set to perform secondary stirring and transmission on the raw materials during transmission, so that the raw materials are mixed more evenly.

[0034] Furthermore, the extrusion port of the extrusion head 8 is provided with a plurality of blocking blocks 9, and the extrusion gaps 28 between adjacent blocking blocks 9 are set from large to small from the side of the extrusion port to the middle of the extrusion port, and the extrusion gaps 28 located on both sides of the extrusion port are of the same size, and the diameter of the blocking blocks 9 on both sides of the extrusion port of the extrusion head 8 is larger than the diameter of the blocking block 9 located in the middle of the extrusion port. Thus, the extruded plastic sheet is set hollow by the blocking of the blocking blocks 9, and the extrusion gaps 28 on both sides of the extrusion port are larger and the diameter of the blocking blocks 9 on both sides is larger than the diameter of the middle blocking block 9, so that the wall thickness and hollow diameter of the two outer sides of the plastic sheet are larger than the wall thickness and hollow diameter of the middle part of the plastic sheet, and since the two sides of the plastic sheet are greatly affected by the external air after extrusion, they will shrink more, so the wall diameter and hollow diameter of the two outer sides of the plastic sheet are larger and have more shrinkage space, so as to prevent the problem that the wall diameter and hollow diameter of the two outer sides of the plastic sheet that shrink more will be too small, resulting in the deformation of the overall plastic sheet.

[0035] Furthermore, the molding die 3 includes a bracket 10, a lower molding plate 11 and an upper molding plate 12. The lower molding plate 11 is fixedly mounted on the bracket 10. A lifting and adjusting cylinder is mounted on the bracket 10. The output end of the lifting and adjusting cylinder is arranged toward the lower molding plate 11. The upper molding plate 12 is mounted on the output end of the lifting and adjusting cylinder. The molding surfaces of the lower molding plate 11 and the upper molding plate 12 are both provided with an air suction portion 29. The upper molding plate 12 is driven up and down by the lifting and adjusting cylinder, so that the distance between the lower molding plate 11 and the upper molding plate 12 is adjusted according to the thickness of the plastic plate to be produced. The molding surfaces of the lower molding plate 11 and the upper molding plate 12 are both provided with an air suction portion 29. After extrusion, the upper and lower surfaces of the plastic plate will shrink toward the middle, thereby affecting the quality of the plastic plate. The upper and lower surfaces of the plastic plate can be adsorbed and shaped by the air suction portions 29 of the lower molding plate 11 and the upper molding plate 12 to prevent shrinkage and thus affect the quality of the plastic plate.

[0036] Furthermore, two shaping plates 13 are installed between the lower molding plate 11 and the upper molding plate 12. The two shaping plates 13 are symmetrically arranged, and air holes 14 are provided on the facing surfaces of the two shaping plates 13. A gap is provided between the two shaping plates 13 for the plastic plate to pass through. The shaping plates 13 are provided with air grooves 30 respectively connected to the air suction part of the lower molding plate 11 or the air suction part of the upper molding plate 12. The air grooves 30 are connected to the air holes 14. In this embodiment, the air grooves 30 are arranged to fit the lower molding plate 11. Specifically, the air suction part 29 includes a transverse groove and a grid-shaped groove. A plurality of air suction ports are provided in the transverse groove and the grid-shaped groove. The two shaping plates are respectively covered on the opposite ends of the transverse groove and the grid-shaped groove, and the air grooves 30 are connected to the air suction ports. Air is sucked simultaneously through the two shaping plates 13, that is, the air holes 14 are connected to the suction part 29 through the air grooves 30 for suction, so there is no need to connect additional vacuum equipment, so that both sides of the plastic plate are sucked and pulled by the shaping plates 13 to form an arc, which has better pressure resistance than the vertically arranged straight edges, and the arc edge also prevents workers from being cut during handling.

[0037] Furthermore, a traction frame 15 is installed between the forming mold 3 and the slitting and conveying device 4. The traction frame includes a support frame, an upper conduction roller group and a lower conduction roller group. Both the upper conduction roller group and the lower conduction roller group are installed on the support frame. There is a transmission gap between the upper conduction roller group and the lower conduction roller group for hollow board transmission. The upper conduction roller group includes a plurality of upper conduction rollers, which are arranged equidistantly along the length of the support frame. The lower conduction roller group includes a plurality of lower conduction rollers, which are arranged equidistantly along the length of the support frame. The plastic board is stably transmitted by the plurality of upper conduction rollers and the plurality of lower conduction rollers.

[0038] Further, the slitting and transmission equipment 4 includes a transmission frame 16 and a cutting machine 17, and the corresponding two sides of the transmission frame 16 are respectively installed with synchronous screw drive members 18, and the two ends of the bottom of the cutting machine 17 are respectively installed on the driving ends of the two synchronous screw drive members 18. The formed plastic plate is transmitted by the transmission frame 16, and the plastic plate is cut into suitable lengths in cooperation with the cutting machine 17. Since there is a slight pause during cutting, the plastic plate to be cut will hit the cutting knife, causing extrusion, which is easy to cause its deformation and affect the product quality. Therefore, during cutting, the cutting machine 17 is driven by the two synchronous screw drive members 18 to follow the movement of the plastic plate to prevent the plastic plate to be cut from hitting the cutting knife, causing extrusion, and easily causing its deformation. Specifically, the cutting machine 17 includes a lifting frame, and the lifting frame is provided with two support columns respectively installed on the driving ends of the two synchronous screw drive members 18, and the output end of the lifting frame is arranged toward the transmission frame 16, and the lifting end of the lifting frame is installed with a heat sealing knife. The lifting frame drives the heat sealing knife to press down and cut and close the cut-off opening.

[0039] Further, a plate stacking device 19 is installed at the output end of the transmission frame 16, and the plate stacking device 19 includes a stacking frame 20, a carrier plate 21, a lifting drive assembly 22 and a double-layer transmission track 23. The stacking frame 20 is located at the output of the transmission frame 16, and the lifting drive assembly 22 is installed in the stacking frame 20. The carrier plate 21 is placed on the lifting end of the lifting drive assembly 22, and a track wheel moving along the double-layer transmission track 23 is installed below the carrier plate 21. Specifically, a blocking rod 27 is installed on the side of the carrier plate 21 facing the double-layer transmission track 23, and the height of the blocking rod 27 is lower than the height of the double-layer transmission track 23. The empty carrier plate 21 is transferred through the upper layer of the double-layer transmission track 23 and placed on the lifting drive assembly 22 in the stacking frame 20, so as to be stacked, and during the stacking process, the lifting drive assembly 22 will drive the carrier plate 21 to descend, and after the stacking is completed, the carrier plate 21 is output through the lower layer transmission track of the double-layer transmission track 23, so as to achieve automatic stacking and increase efficiency.

[0040] Furthermore, the lifting drive assembly 22 includes a transmission chain 24, a transmission wheel 25 and a driving machine 26. The transmission wheel 25 is rotatably mounted on the stacking frame 20. The transmission chain 24 is wound around the transmission wheel 25 and is connected to the transmission wheel 25 in a transmission manner. The transmission chain 24 is provided with a support plate along its length direction, and the bearing plate 21 is placed on the support plate. The driving machine 26 is mounted on the stacking frame 20 and is connected to the transmission wheel 25 in a coaxial transmission manner. The transmission wheel 25 is driven to rotate by the driving machine 26, so that the transmission chain 24 drives the support plate to move, thereby driving the bearing plate 21 to move downward.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic hollow plate continuous extruder, characterized in that: It includes an extruder body, a plurality of sub-extrusion pieces, a plurality of molding dies and a plurality of slitting and transmission devices, wherein the plurality of sub-extrusion pieces are installed at the output of the extruder body and are connected to the extrusion head of the extruder body, the plurality of molding dies are correspondingly installed at the output of the plurality of sub-extrusion pieces, and the plurality of slitting and transmission devices are correspondingly installed at the output of the plurality of molding dies; The sub-rotating extruder comprises a transmission pipe, an extrusion screw, a driving motor and an extrusion head, wherein the transmission pipe is connected to the extruder body, the extrusion screw is rotatably arranged in the transmission pipe, the extrusion head is installed outside the transmission pipe and is drivingly connected to the extrusion screw, and the extrusion head is installed at the output port of the transmission pipe and is connected to the transmission pipe; The extrusion port of the extrusion head is provided with a plurality of blocking blocks, and the extrusion gaps between adjacent blocking blocks are arranged from large to small from the side of the extrusion port to the middle of the extrusion port, and the diameter of the blocking blocks on both sides of the extrusion port of the extrusion head is larger than the diameter of the blocking block located in the middle of the extrusion port; The forming mold comprises a bracket, a lower forming plate and an upper forming plate, wherein the lower forming plate is fixedly mounted on the bracket, a lifting and adjusting cylinder is mounted on the bracket, an output end of the lifting and adjusting cylinder is arranged toward the lower forming plate, and the upper forming plate is mounted on the output end of the lifting and adjusting cylinder, and the forming surfaces of the lower forming plate and the upper forming plate are both provided with suction parts; Two shaping plates are installed between the lower shaping plate and the upper shaping plate, the two shaping plates are symmetrically arranged, and air holes are provided on the facing surfaces of the two shaping plates, and air grooves are provided on the shaping plates respectively connected to the air suction part of the lower shaping plate or the air suction part of the upper shaping plate, and the air grooves are connected to the air holes; The air suction part includes a transverse groove and a grid-shaped groove, and a plurality of air suction ports are provided in the transverse groove and the grid-shaped groove. The two shaping plates are respectively covered on the symmetrical ends of the transverse groove and the grid-shaped groove, and the air groove is connected to the air suction port.

2. A continuous extruder for plastic hollow plates according to claim 1, characterized in that: A traction frame is installed between the forming mold and the slitting and transmission equipment, and the traction frame includes a support frame, an upper conduction roller group and a lower conduction roller group, and the upper conduction roller group and the lower conduction roller group are both installed on the support frame, and there is a transmission gap between the upper conduction roller group and the lower conduction roller group for transmitting the hollow plate; the upper conduction roller group includes a plurality of upper conduction rollers, and the plurality of upper conduction rollers are equidistantly arranged along the length of the support frame, and the lower conduction roller group includes a plurality of lower conduction rollers, and the plurality of lower conduction rollers are equidistantly arranged along the length of the support frame.

3. A continuous extruder for plastic hollow plates according to claim 1, characterized in that: The slitting and transmission equipment comprises a transmission frame and a cutting machine. Synchronous screw drive members are respectively installed on the corresponding two sides of the transmission frame, and the two ends of the bottom of the cutting machine are respectively installed on the driving ends of the two synchronous screw drive members.

4. A continuous extruder for plastic hollow plates according to claim 3, characterized in that: The cutting machine comprises a lifting frame, the lifting frame is provided with two support columns respectively mounted on the driving ends of two synchronous screw drive members, the output end of the lifting frame is arranged toward the transmission frame, and the lifting end of the lifting frame is installed with a heat sealing knife.

5. A plastic hollow plate continuous extruder according to claim 3, characterized in that: A plate stacking device is installed at the output end of the transmission frame, and the plate stacking device includes a stacking frame, a carrying plate, a lifting drive assembly and a double-layer transmission track. The stacking frame is located at the output of the transmission frame, the lifting drive assembly is installed in the stacking frame, the carrying plate is placed on the lifting end of the lifting drive assembly, a track wheel that moves along the double-layer transmission track is installed below the carrying plate, and a blocking rod is installed on the side of the carrying plate facing the double-layer transmission track, and the height of the blocking rod is lower than the height of the double-layer transmission track.

6. A plastic hollow plate continuous extruder according to claim 5, characterized in that: The lifting drive assembly includes a transmission chain, a transmission wheel and a driving machine. The transmission wheel is rotatably installed on the stacking frame, the transmission chain is wound around the transmission wheel and is transmission-connected to the transmission wheel. The transmission chain is installed with a support plate along its own length direction, the bearing plate is placed on the support plate, and the driving machine is installed on the stacking frame and is coaxially transmission-connected to the transmission wheel.

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