A pneumatic demoulding device for forming plastic corrugated pipes

Abstract

The present invention relates to the technical field of corrugated pipe production, and specifically discloses a pneumatic demoulding device for forming plastic corrugated pipes, including a base, a traction rod is rotatably installed on one side of the upper surface of the base, and a threaded rod is rotatably installed on the other side of the upper surface of the base, the threads at both ends of the threaded rod are oppositely arranged, and the threaded rod and the traction rod are arranged parallel to each other, wherein the end of the threaded rod is connected to a rotating handle, and the two ends of the threaded rod are rotatably connected to a movable plate through a thread, and the end of the movable plate away from the threaded rod is slidably connected to the traction rod, and also includes: a molding assembly, which is arranged on the upper surface of the base. The formed corrugated pipe can be taken out by reversing the rotating handle on the threaded rod after cooling so that the cladding plate is separated from the outer surface of the corrugated pipe, so that the outer wall of the corrugated pipe does not rub against the mold, and the quality of the corrugated pipe output is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated pipe production, in particular to a pneumatic demoulding device for forming plastic corrugated pipes. Background Art

[0002] High-density polyethylene (HDPE) double-wall corrugated pipe is a new type of pipe with an annular outer wall and a smooth inner wall. After more than ten years of development and improvement, it has developed from a single variety to a complete product series. The production process and application technology are very mature. The inner wall of the double-wall corrugated pipe is usually blue or black, and some brands use yellow inner wall.

[0003] In the production process of double-wall corrugated pipes, an essential step is to shape and demould them. Most of the shaping and demoulding processes use a fixed mold to cast the internal cavity of the mold and wait for the corrugated pipe to cool and form before directly removing it. This method will cause greater friction between the inner and outer walls of the corrugated pipe and the mold, causing the corrugated pipe to be subjected to a greater pulling force when the corrugated pipe is removed, which in turn causes scratches on the corrugated pipe, affecting the quality of the corrugated pipe. At the same time, the demoulding time will be very long, resulting in low production efficiency. Summary of the invention

[0004] The present invention provides a pneumatic demoulding device for forming a plastic corrugated pipe, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pneumatic demoulding device for forming a plastic corrugated pipe, comprising a base, a traction rod is rotatably mounted on one side of the upper surface of the base, a threaded rod is rotatably mounted on the other side of the upper surface of the base, the threads at both ends of the threaded rod are arranged oppositely, and the threaded rod and the traction rod are arranged parallel to each other, wherein the end of the threaded rod is connected to a rotating handle, and the two ends of the threaded rod are rotatably connected to a movable plate through threads, and the end of the movable plate away from the threaded rod is slidably connected to the traction rod, and also includes:

[0006] A molding assembly, the molding assembly is arranged on the upper surface of the base, and the molding assembly is used to fix and mold the hot-melt raw material of the corrugated pipe;

[0007] A demoulding assembly, which is arranged on the upper surface of the base and is also arranged between the molding assemblies, and is used to demould the finished corrugated pipe;

[0008] A pneumatic assembly, wherein the pneumatic assembly is arranged inside the demoulding assembly and is used to cooperate with the demoulding assembly to demould the formed corrugated pipe;

[0009] The molding assembly includes a support frame, the lower end of which is fixedly connected to the surface of the movable plate away from the base, the top of which is fixedly connected to a connecting plate, the inner ends of the two connecting plates are fixedly connected to a cladding plate, the cladding plate is arranged in a semicircular tube shape, the inner surface of the cladding plate is arranged in a mold shape of the outer surface of the corrugated tube, and the two cladding plates can be combined into a circular tube shape, and a demolding assembly is arranged on the inner side of the cladding plate.

[0010] The contact surfaces of the two cladding plates are provided with magnets, and the magnets of the contact surfaces of the two cladding plates are arranged oppositely. The threaded rod is rotated by driving the rotating handle on the threaded rod. When the threaded rod rotates, since the threads on the threaded rod are arranged in opposite symmetry, the two movable plates are moved closer to each other on the threaded rod and the traction rod, thereby driving the support frame on the movable plate to move, that is, the two cladding plates are moved closer to each other, and finally fit in contact to form a tube, and the demoulding component is wrapped therein. At this time, hot-melt plastic is injected into the cavity between the wrapping plate and the demoulding component.

[0011] Preferably, the demoulding assembly includes a combination block, the outer surface of the combination block is arranged in an arc shape, six combination blocks are arranged at fixed intervals around the central axis, and a combination plate is arranged between each of the combination blocks. The outer surface of the combination plate is arranged in an arc shape, wherein the curvature of the outer surface of the combination plate is consistent with the curvature of the outer surface of the combination block, and the combination plate and the combination block are spliced ​​and combined into a circular tube shape, and the inner surface of the combination plate is arranged to be a plane.

[0012] Preferably, the demolding assembly also includes a fixing ring, the lower surface of the fixing ring is fixedly connected to the upper surface of the base through a connecting rod, the inner surface of the fixing ring is rotatably connected to a rotating cover, the rotating cover is arranged through the fixing ring, the top of the rotating cover is fixedly connected to a first adjusting disk, the bottom outer surface of the rotating cover is rotatably connected to a connecting belt, the end of the connecting belt away from the rotating cover is rotatably connected to a motor, the motor is fixedly mounted on the top inner surface of the base, and the rotating shaft of the motor is arranged through the upper surface of the base, the rotating shaft of the motor is rotatably connected to the connecting belt, the surface of the first adjusting disk is penetrated by a first slide groove with a fixed interval around the central axis, wherein the first slide groove is arranged in an arc shape, and the first slide groove is slidably connected to the bottom end of the combination block through a protrusion.

[0013] Preferably, the top surface of the combined plate is provided with a second adjusting disk, and the surface of the second adjusting disk is penetrated by a second sliding groove at a fixed interval around the central axis, wherein the second sliding groove is arranged in a straight groove shape, and the second sliding groove is slidably connected to the upper end of the combined plate through a protrusion, and the surface of the second adjusting disk away from the combined plate is fitted and fixedly connected with a sealing disk, wherein the diameters of the second adjusting disk and the sealing disk are the same as the diameter of the circular tube formed by the combination of the combined plate and the combined block. When the cooled and formed corrugated tube is demolded, the motor can be started, and when the motor is started, the connecting belt will be driven to rotate. When the connecting belt rotates, the rotating cover at the other end thereof will rotate, thereby driving the first adjusting disk at its upper end to rotate, causing the combined block slidably connected to the first sliding groove on the first adjusting disk to slide in the first sliding groove, that is, the combined block slides inwardly, thereby achieving the outer surface of the combined block being separated from the contact with the inner wall of the corrugated tube.

[0014] Preferably, the pneumatic assembly includes an air pressure tube, which is vertically arranged in a cavity between the combination plate and the combination block, the bottom end of the air pressure tube is fixedly connected to the inner surface of the fixing ring, the top end of the air pressure tube is fixedly connected to the inner surface of the second adjusting disk, the bottom of the air pressure tube is passed through and fixedly connected with an air supply pipe, the air supply pipe is set through the base, the input end of the air supply pipe is fixedly connected to an air pump, and the air pump is fixedly installed on the side of the base.

[0015] Preferably, the outer surface of the air pressure tube is penetrated and fixedly connected with an output tube, wherein six output tubes are grouped together, the outer end of the output tube is slidably sleeved with a connecting tube, the outer end of the connecting tube is fixedly sleeved with a release tube, the release tube is penetrated and slidably connected inside the assembly block, wherein the outer end of the release tube is in a closed state, and the outer end surface of the release tube is arranged in an arc shape, and an air jet hole is penetrated and opened on the outer surface of the release tube, when the assembly block begins to break away from the contact with the bellows, it will also slide inward along the release tube, so that the outer end of the release tube will gradually be exposed. In the gap between the assembly block and the bellows, as the assembly block moves, the air jet hole at the outer end of the release tube is exposed in the gap between the assembly block and the bellows. At this time, the air pump is started, and the air pump injects air pressure into the air pressure tube through the air supply pipe, so that the air pressure tube inputs gas into the release tube, and finally fills the gap between the assembly block and the bellows through the air jet hole on the release tube, and gradually increases the air pressure in the gap between the assembly block and the bellows, causing the bellows to expand slightly outward, so that its inner wall gradually breaks away from the contact with the outer surface of the assembly plate.

[0016] Preferably, an isolation plate is fixedly connected to the inner surface of the combination plate, and the isolation plate and the inner surface of the combination plate are arranged perpendicular to each other, and the two side surfaces of the isolation plate are symmetrically connected with special-shaped strips through springs, and the surface of the special-shaped strip close to the combination plate is slidably connected to the inner surface of the combination plate, wherein the surface of the special-shaped strip away from the isolation plate is set at an angle, and the surface of the special-shaped strip away from the isolation plate is initially arranged in contact with the inner surface of the combination block.

[0017] Preferably, a special-shaped slot is provided on the surface of the special-shaped strip away from the isolation plate, and a linkage plate is slidably connected in the special-shaped slot, and one end of the linkage plate away from the special-shaped slot is fixedly connected to the side of the combination block. As the combination block moves, the linkage plates at both ends of the combination block will move along the special-shaped slot on the special-shaped strip, and by setting an angle on the outer surface of the special-shaped strip, the combination block will be driven to squeeze the special-shaped strip when it moves, so that the special-shaped strip slides inwardly on the inner surface of the combination plate. When the combination block is displaced to a certain distance, it means that the linkage plate moves to the inner end of the special-shaped slot and clamps the combination plate. At this time, as the combination block moves, it will drive the combination plate to move inwardly along the second slot on the second adjusting disk and produce a smaller displacement.

[0018] The present invention provides a pneumatic demoulding device for forming a plastic corrugated pipe. It has the following beneficial effects:

[0019] 1. The pneumatic demoulding device for forming plastic bellows can remove the formed bellows by reversing the rotating handle on the threaded rod after cooling so that the laminated plate is separated from the outer surface of the bellows, so that the outer wall of the bellows does not rub against the mold, effectively improving the output quality of the bellows. At the same time, by setting the contact surface of the laminated plate to be magnetic, the mold is fixed by magnetic attraction, avoiding cumbersome and complicated fixing methods that lead to cumbersome disassembly and assembly and reduce the output of the bellows.

[0020] 2. The pneumatic demoulding device for forming the plastic bellows creates a gap between the inner wall of the bellows and the demoulding assembly, making it easier for the bellows to be removed from the demoulding assembly. The disengagement of the cladding plate further improves the demoulding speed of the bellows without generating friction to the bellows. When the demoulding is completed, the reversing motor drives the assembly block to reset it, making it convenient to continue shaping.

[0021] 3. The pneumatic demoulding device for forming the plastic bellows allows the inner wall of the bellows to eventually break away from the contact between the assembly block and the assembly plate, further improving the demoulding speed of the bellows. At the same time, as the assembly block continues to move inward, it will contact the outer end of the connecting pipe and push the connecting pipe to slide inward along the output pipe, thereby driving the release pipe to move inward a short distance and break away from the contact with the bellows, thereby improving the demoulding efficiency and further improving the protection of the bellows.

[0022] 4. The pneumatic demoulding device for forming the plastic bellows cooperates with the air pressure released by the release tube, so that the combination plate is easier to break away from the contact with the bellows, and then when the bellows is demoulded, the combination block, the release tube and the combination plate will gradually break away from the contact with the inner wall of the bellows, so that the inner wall of the bellows is emptied and can be easily removed, which greatly improves the production efficiency of the bellows and also greatly protects the inner wall of the bellows from being scratched by friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the present invention;

[0024] Figure 2 is a back view of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the composite panel of the present invention;

[0026] Figure 4 It is a schematic diagram of the installation structure of the demoulding component of the present invention;

[0027] Figure 5 It is a schematic diagram of the installation structure of the motor and the air pump of the present invention;

[0028] Figure 6 It is a schematic diagram of the connection structure of the motor and the air pump of the present invention;

[0029] Figure 7 is a schematic structural diagram of the first adjustment disk of the present invention;

[0030] Figure 8 is a schematic structural diagram of a second adjustment disk of the present invention;

[0031] Fig. 9 It is a schematic diagram of the internal structure of the demoulding component of the present invention;

[0032] Fig.10 It is a schematic diagram of the installation structure of the air pressure tube of the present invention;

[0033] Fig.11 It is a schematic diagram of the structure of the release pipe, the connecting pipe and the output pipe of the present invention;

[0034] Fig.12 It is a schematic diagram of the installation structure of the combined board and the combined block of the present invention;

[0035] Fig.13 It is a structural schematic diagram of the special-shaped strip and the special-shaped slide groove of the present invention.

[0036] In the figure: 1. base; 2. traction rod; 3. threaded rod; 4. movable plate; 5. molding assembly; 51. support frame; 52. connecting plate; 53. laminating plate; 6. demoulding assembly; 61. combination block; 62. combination plate; 63. fixing ring; 64. rotating cover; 65. first adjusting disk; 66. connecting belt; 67. motor; 68. first slide; 69. second adjusting disk; 610. second slide; 611. sealing disk; 612. isolation plate; 613. special-shaped strip; 614. special-shaped slide; 615. linkage plate; 7. pneumatic assembly; 71. air pressure pipe; 72. air supply pipe; 73. air pump; 74. output pipe; 75. connecting pipe; 76. release pipe; 77. jet hole. DETAILED DESCRIPTION

[0037] 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.

[0038] First embodiment: Figures 1 to 5 As shown, the present invention provides a technical solution: a pneumatic demoulding device for forming a plastic corrugated pipe, comprising a base 1, a traction rod 2 is rotatably mounted on one side of the upper surface of the base 1, a threaded rod 3 is rotatably mounted on the other side of the upper surface of the base 1, the threads at both ends of the threaded rod 3 are arranged oppositely, and the threaded rod 3 and the traction rod 2 are arranged parallel to each other, wherein the end of the threaded rod 3 is connected to a rotating handle, and the two ends of the threaded rod 3 are rotatably connected to a moving plate 4 through threads, and the end of the moving plate 4 away from the threaded rod 3 is slidably connected to the traction rod 2, and also includes:

[0039] A molding component 5, which is arranged on the upper surface of the base 1 and is used to fix and mold the hot-melt raw material of the corrugated pipe;

[0040] The demoulding assembly 6 is arranged on the upper surface of the base 1 and is also arranged between the molding assemblies 5. The demoulding assembly 6 is used to demould the finished corrugated pipe;

[0041] Pneumatic assembly 7, the pneumatic assembly 7 is arranged inside the demoulding assembly 6, and the pneumatic assembly 7 is used to cooperate with the demoulding assembly 6 to demould the formed corrugated pipe;

[0042] The molding component 5 includes a support frame 51, the lower end of the support frame 51 is fixedly connected to the surface of the movable plate 4 away from the base 1, the top of the support frame 51 is fixedly connected to a connecting plate 52, the inner ends of the two connecting plates 52 are fixedly connected to a cladding plate 53, the cladding plate 53 is set to a semicircular tube shape, the inner surface of the cladding plate 53 is set to a mold shape of the outer surface of the corrugated tube, and the two cladding plates 53 can be combined into a circular tube shape, and a demolding component 6 is set on the inner side of the cladding plate 53.

[0043] The contact surfaces of the two cladding plates 53 are provided with magnetism, and the magnetism of the contact surfaces of the two cladding plates 53 is arranged oppositely.

[0044] During operation, the threaded rod 3 is rotated by driving the rotating handle on the threaded rod 3. When the threaded rod 3 rotates, since the threads on the threaded rod 3 are symmetrically arranged in opposite directions, the two movable plates 4 will move closer to each other on the threaded rod 3 and the traction rod 2, thereby driving the support frame 51 on the movable plate 4 to move, that is, the two composite plates 53 move closer to each other, and finally fit in contact to form a tube, and the demoulding component is wrapped therein. At this time, hot-melt plastic is injected into the cavity between the composite plate and the demoulding component, and the rotating handle on the threaded rod 3 is reversed after cooling to make the composite plate 53 detach from the outer surface of the corrugated tube. The formed corrugated tube can be taken out, so that the outer wall of the corrugated tube does not rub against the mold, effectively improving the quality of the corrugated tube output. At the same time, by setting the contact surface of the composite plate 53 to be magnetic, the mold is fixed by magnetic attraction, avoiding cumbersome and complicated fixing methods that lead to cumbersome disassembly and assembly and reduce the output of the corrugated tube.

[0045] Second embodiment: Figures 6 to 9 As shown, the demoulding assembly includes a combination block 61, the outer surface of the combination block 61 is arranged in an arc shape, six combination blocks 61 are arranged at fixed intervals around the central axis, and a combination plate 62 is arranged between every two combination blocks 61. The outer surface of the combination plate 62 is arranged in an arc shape, wherein the curvature of the outer surface of the combination plate 62 is consistent with the curvature of the outer surface of the combination block 61, and the combination plate 62 and the combination block 61 are spliced ​​and combined into a circular tube shape, and the inner surface of the combination plate 62 is arranged to be a plane.

[0046] The demoulding assembly also includes a fixed ring 63, the lower surface of the fixed ring 63 is fixedly connected to the upper surface of the base 1 through a connecting rod, the inner surface of the fixed ring 63 is rotatably connected to a rotating cover 64, and the rotating cover 64 is arranged through the fixed ring 63, and the top of the rotating cover 64 is fixedly connected to a first adjusting disk 65, and the bottom outer surface of the rotating cover 64 is rotatably connected to a connecting belt 66, and the end of the connecting belt 66 away from the rotating cover 64 is rotatably connected to a motor 67, the motor 67 is fixedly installed on the top inner surface of the base 1, and the rotating shaft of the motor 67 is arranged through the upper surface of the base 1, and the rotating shaft of the motor 67 is rotatably connected to the connecting belt 66, and the surface of the first adjusting disk 65 is penetrated by a first slide groove 68 at a fixed interval around the central axis, wherein the first slide groove 68 is arranged in an arc shape, and the first slide groove 68 is slidably connected to the bottom end of the combination block 61 through a protrusion.

[0047] A second adjusting disk 69 is provided on the top surface of the combined plate 62, and a second slide groove 610 is opened on the surface of the second adjusting disk 69 at a fixed interval around the central axis, wherein the second slide groove 610 is configured as a straight groove, and the second slide groove 610 is slidably connected to the upper end of the combined plate 62 through a protrusion, and a sealing disk 611 is fixedly connected to the surface of the second adjusting disk 69 away from the combined plate 62, wherein the diameters of the second adjusting disk 69 and the sealing disk 611 are the same as the diameter of the circular tube formed by the combination of the combined plate 62 and the combined block 61.

[0048] During operation, when the cooled and formed bellows is to be demoulded, the motor 67 can be started. When the motor 67 is started, the connecting belt 66 will be driven to rotate. When the connecting belt 66 rotates, the rotating cover 64 at the other end thereof will be rotated, thereby driving the first adjusting disk 65 at its upper end to rotate, prompting the assembly block 61 slidably connected to the first sliding groove 68 on the first adjusting disk 65 to slide in the first sliding groove 68, that is, the assembly block 61 slides inwardly, thereby achieving the outer surface of the assembly block 61 being separated from the contact with the inner wall of the bellows, thereby creating a gap between the inner wall of the bellows and the demoulding assembly, thereby making it easier for the bellows to be removed from the demoulding assembly, and cooperating with the disengagement of the laminating plate 53 to further improve the demoulding speed of the bellows without generating friction to the bellows. When the demoulding is completed, the reversing motor 67 drives the assembly block 61 to reset it, which is convenient for continuing the shaping.

[0049] The third embodiment: Fig.10 , Fig.11As shown, the pneumatic assembly 7 includes an air pressure tube 71, which is vertically arranged in the cavity between the combination plate 62 and the combination block 61, the bottom end of the air pressure tube 71 is fixedly connected to the inner surface of the fixing ring 63, the top end of the air pressure tube 71 is fixedly connected to the inner surface of the second adjusting disk 69, the bottom of the air pressure tube 71 is penetrated and fixedly connected with an air supply pipe 72, the air supply pipe 72 is arranged through the base 1, and the input end of the air supply pipe 72 is fixedly connected to an air pump 73, and the air pump 73 is fixedly installed on the side of the base 1.

[0050] An output pipe 74 is fixedly connected to the outer surface of the air pressure tube 71, wherein six output pipes 74 are grouped together, a connecting pipe 75 is slidably sleeved on the outer end of the output pipe 74, a release pipe 76 is fixedly sleeved on the outer end of the connecting pipe 75, and the release pipe 76 is slidably connected to the interior of the combination block 61, wherein the outer end of the release pipe 76 is in a closed state, and the outer end surface of the release pipe 76 is arranged in an arc shape, and an air injection hole 77 is opened through the outer surface of the release pipe 76.

[0051] During operation, when the assembly block 61 begins to break away from the contact with the bellows, it will also slide inward along the release tube 76, so that the outer end of the release tube 76 will gradually be exposed in the gap between the assembly block 61 and the bellows, and as the assembly block 61 moves, the air injection hole 77 at the outer end of the release tube 76 is exposed in the gap between the assembly block 61 and the bellows. At this time, the air pump 73 is started, and the air pump 73 injects air pressure into the air pressure tube 71 through the air supply pipe 72, that is, the air pressure tube 71 inputs gas into the release tube 76, and finally fills the gap between the assembly block 61 and the bellows through the air injection hole 77 on the release tube 76, and gradually The air pressure in the gap between the assembly block 61 and the bellows gradually increases, causing the bellows to expand slightly outward, so that its inner wall gradually breaks away from the contact with the outer surface of the assembly plate 62, and then the inner wall of the bellows finally breaks away from the contact between the assembly block 61 and the assembly plate 62, further improving the demoulding speed of the bellows. At the same time, as the assembly block 61 continues to move inward, it will contact the outer end of the connecting tube 75 and push the connecting tube 75 to slide inward along the output tube 74, thereby driving the release tube 76 to move a short distance inward and break away from the contact with the bellows, thereby improving the demoulding efficiency and further improving the protection of the bellows.

[0052] Fourth embodiment: Fig.12 , Fig.13As shown, the inner surface of the combined plate 62 is fixedly connected with an isolation plate 612, and the isolation plate 612 and the inner surface of the combined plate 62 are arranged perpendicular to each other, and the two side surfaces of the isolation plate 612 are symmetrically connected with special-shaped strips 613 through springs, and the surface of the special-shaped strip 613 close to the combined plate 62 is slidably connected to the inner surface of the combined plate 62, wherein the surface of the special-shaped strip 613 away from the isolation plate 612 is set at an angle, and the surface of the special-shaped strip 613 away from the isolation plate 612 is initially arranged to fit and contact with the inner surface of the combined block 61.

[0053] A special-shaped slot 614 is provided on the surface of the special-shaped strip 613 away from the isolation plate 612 , and a linkage plate 615 is slidably connected in the special-shaped slot 614 . One end of the linkage plate 615 away from the special-shaped slot 614 is fixedly connected to the side of the assembly block 61 .

[0054] During operation, as the assembly block 61 moves, the linkage plates 615 at both ends of the assembly block 61 will move along the special-shaped grooves 614 on the special-shaped strips 613, and by setting an angle on the outer surface of the special-shaped strips 613, the assembly block 61 will be driven to squeeze the special-shaped strips 613 when moving, so that the special-shaped strips 613 slide inward on the inner surface of the assembly plate 62. When the assembly block 61 moves to a certain distance, it means that the linkage plate 615 moves to the inner end of the special-shaped grooves 614 and clamps the assembly plate 62. At this time, as the assembly block 61 moves to a certain distance, the linkage plate 615 moves to the inner end of the special-shaped grooves 614 and clamps the assembly plate 62. The movement of 61 will drive the combined plate 62 to move inward along the second slide groove 610 on the second adjustment disk 69 and produce a small displacement. Cooperating with the air pressure released by the release tube 76, the combined plate 62 is easier to break away from the contact with the bellows, and then when the bellows is demoulded, the combined block 61, the release tube 76 and the combined plate 62 will gradually break away from the contact with the inner wall of the bellows, so that the inner wall of the bellows is emptied and can be easily removed, which greatly improves the production efficiency of the bellows and also greatly protects the inner wall of the bellows from being scratched by friction.

[0055] 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. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A pneumatic demoulding device for forming a plastic corrugated pipe, comprising a base (1), characterized in that: A traction rod (2) is rotatably mounted on one side of the upper surface of the base (1), and a threaded rod (3) is rotatably mounted on the other side of the upper surface of the base (1). The threads at both ends of the threaded rod (3) are arranged opposite to each other, and the threaded rod (3) and the traction rod (2) are arranged parallel to each other. The two ends of the threaded rod (3) are rotatably connected to a movable plate (4) through threads, and the end of the movable plate (4) away from the threaded rod (3) is slidably connected to the traction rod (2). The invention also includes: A molding component (5), the molding component (5) being arranged on the upper surface of the base (1), the molding component (5) being used to fix and mold the hot-melt raw material of the corrugated pipe; A demoulding component (6), the demoulding component (6) being arranged on the upper surface of the base (1), the demoulding component (6) being also arranged between the molding components (5), the demoulding component (6) being used to demould the molded corrugated pipe; A pneumatic component (7), the pneumatic component (7) being arranged inside the demoulding component (6), and the pneumatic component (7) being used to cooperate with the demoulding component (6) to demould the formed corrugated pipe; The molding assembly (5) comprises a support frame (51), the lower end of the support frame (51) is fixedly connected to the surface of the movable plate (4) away from the base (1), the top end of the support frame (51) is fixedly connected to a connecting plate (52), the inner ends of the two connecting plates (52) are fixedly connected to a cladding plate (53), the cladding plate (53) is arranged in a semi-circular tube shape, the inner surface of the cladding plate (53) is arranged in a mold shape of the outer surface of the corrugated tube, and the inner side of the cladding plate (53) is provided with a demoulding assembly (6); The contact surfaces of the two cladding plates (53) are provided with magnetism, and the magnetism of the contact surfaces of the two cladding plates (53) is arranged oppositely; The demoulding assembly comprises a combination block (61), the outer surface of the combination block (61) is arranged in an arc shape, six combination blocks (61) are arranged at fixed intervals around the central axis, and combination plates (62) are arranged between each of the combination blocks (61), and the outer surface of the combination plates (62) is arranged in an arc shape; The demoulding assembly further comprises a fixed ring (63), the lower surface of the fixed ring (63) being fixedly connected to the upper surface of the base (1) via a connecting rod, the inner surface of the fixed ring (63) being rotatably connected to a rotating cover (64), the rotating cover (64) being arranged to penetrate the fixed ring (63), the top end of the rotating cover (64) being fixedly connected to a first adjusting disk (65), the bottom outer surface of the rotating cover (64) being rotatably connected to a connecting belt (66), the end of the connecting belt (66) away from the rotating cover (64) being rotatably connected to a motor (67), the motor (67) being fixedly mounted on the inner surface of the top end of the base (1), the surface of the first adjusting disk (65) being penetrated by a first sliding groove (68) at a fixed interval around the central axis, the first sliding groove (68) being slidably connected to the bottom end of the assembly block (61) via a protrusion; A second adjustment disk (69) is provided on the top surface of the combined plate (62); a second slide groove (610) is provided on the surface of the second adjustment disk (69) at a fixed interval around the central axis; the second slide groove (610) is slidably connected to the upper end of the combined plate (62) via a protrusion; a sealing disk (611) is fixedly connected to the surface of the second adjustment disk (69) on a side away from the combined plate (62); The pneumatic assembly (7) comprises an air pressure pipe (71), the air pressure pipe (71) is vertically arranged in a cavity between the combination plate (62) and the combination block (61), the bottom end of the air pressure pipe (71) is fixedly connected to the inner surface of the fixing ring (63), the top end of the air pressure pipe (71) is fixedly connected to the inner surface of the second regulating disk (69), the bottom of the air pressure pipe (71) is penetrated and fixedly connected with an air supply pipe (72), the air supply pipe (72) is penetrated and arranged on the base (1), the input end of the air supply pipe (72) is fixedly connected with an air pump (73), and the air pump (73) is fixedly installed on the side of the base (1); An output pipe (74) is fixedly connected to the outer surface of the air pressure pipe (71), a connecting pipe (75) is slidably sleeved on the outer end of the output pipe (74), a release pipe (76) is fixedly sleeved on the outer end of the connecting pipe (75), the release pipe (76) is slidably connected to the interior of the assembly block (61), and an air injection hole (77) is opened on the outer surface of the release pipe (76).

2. A pneumatic demoulding device for forming a plastic corrugated pipe according to claim 1, characterized in that: An isolation plate (612) is fixedly connected to the inner surface of the combined plate (62); the isolation plate (612) and the inner surface of the combined plate (62) are arranged perpendicular to each other; the two side surfaces of the isolation plate (612) are symmetrically connected to special-shaped strips (613) via springs; the surface of the special-shaped strip (613) close to the combined plate (62) is slidably connected to the inner surface of the combined plate (62); and the surface of the special-shaped strip (613) away from the isolation plate (612) is initially arranged in contact with the inner surface of the combined block (61).

3. A pneumatic demoulding device for forming a plastic corrugated pipe according to claim 2, characterized in that: A special-shaped slide groove (614) is provided on the surface of the special-shaped strip (613) at a side away from the isolation plate (612), a linkage plate (615) is slidably connected in the special-shaped slide groove (614), and one end of the linkage plate (615) away from the special-shaped slide groove (614) is fixedly connected to the side surface of the assembly block (61).

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