A high pressure-resistant corrugated pipe forming device and forming method

Abstract

The present invention discloses a high-pressure-resistant corrugated pipe forming device and forming method, which relates to the technical field of corrugated pipe forming, including a base, on which a fixed disk is fixedly installed, on which a winding shaft is rotatably installed, and also includes: a push block, which is driven by a driving mechanism and is slidably arranged along the axial direction of the winding shaft; a top rod, which is movably arranged on the push block, on which a protrusion is fixedly installed; a positioning plate, on which an abutment rod is fixedly installed at the bottom end, and a groove is provided on the positioning plate; a connecting plate, which is fixedly installed at the bottom end of the top rod, and on which a blade is rotatably installed. In the present invention, in the process of spirally filling plastic into the corrugated strips to form the corrugated pipe, the arc-shaped blade can be used to limit the position of the corrugated strips and scrape the plastic evenly. At the same time, after forming, the movement of the corrugated pipe can be pushed by the push block to transform the blade into a cutting form during the movement, thereby cutting the redundant corrugated strips.

Description

Technical Field

[0001] The invention relates to the technical field of corrugated pipe forming, and in particular to a high-pressure-resistant corrugated pipe forming device and a forming method. Background Art

[0002] The bellows is a tubular element with a retractable and bendable corrugated structure. Its unique structural design makes it widely used in many fields. It has plastic and metal, and its application is extremely wide. The high-pressure bellows has excellent compression resistance and durability.

[0003] In the process of forming high-pressure corrugated pipes, the corrugated strips are usually spirally wound and then filled with molten plastic for forming. However, after the forming is completed, the filled molten plastic usually needs to be scraped evenly to make the spiral protrusions of the corrugated pipe smooth and complete. However, some existing scraping parts are independently set and only provide a scraping effect. At the same time, the entire molding equipment, such as limit blocks, cutting knives, etc. are all independently set. Therefore, they are usually independently controlled during use, which makes the operation cumbersome. Summary of the invention

[0004] The object of the present invention is to provide a high pressure-resistant corrugated pipe forming device and a forming method to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-pressure-resistant corrugated pipe forming equipment, comprising a base, on which a fixed disk is fixedly installed, on which a winding shaft is rotatably installed, and also comprising: a push block, which is driven by a driving mechanism and is slidably arranged along the axial direction of the winding shaft; a top rod, which is movably arranged on the push block, on which a protrusion is fixedly installed; a positioning plate, on the bottom end of which an abutment rod is fixedly installed, and a groove is provided on the positioning plate; a connecting plate, which is fixedly installed at the bottom end of the top rod, and on which a blade is rotatably installed; a side rod, which is slidably installed on the connecting plate; after the forming is completed, the push block is driven to move along the axial direction of the winding shaft to push the corrugated pipe away, and while the push block pushes, the blade moves up and rotates to switch from a scraping shape to a cutting shape, at which time the corrugated strips are cut while the push block pushes the corrugated pipe to move.

[0006] Preferably, the driving mechanism comprises an electric push rod, a fixed end of the electric push rod is fixedly mounted on a fixed plate, and a free end of the electric push rod is fixedly connected to a push block.

[0007] Preferably, a connecting shaft is rotatably mounted on the connecting plate, a connecting frame is fixedly mounted on the connecting shaft, and the blade is mounted on the connecting frame.

[0008] Preferably, the blade is arc-shaped, and has two through holes;

[0009] Extension plates are fixedly mounted on both ends of the connection frame.

[0010] Preferably, a rotating plate is provided inside the push rod, a rotating shaft is fixedly mounted on the rotating plate, and the rotating shaft and the push rod are rotatably connected, and abutment wheels are fixedly mounted on both ends of the rotating plate;

[0011] An inclined block is fixedly mounted on the side rod.

[0012] Preferably, a telescopic member is slidably mounted on the push block, and a push rod is fixedly mounted on the upper end of the telescopic member.

[0013] Preferably, a first circular wheel and a second circular wheel are rotatably mounted inside the push block, and the first circular wheel and the second circular wheel are in close contact with each other.

[0014] Preferably, a plurality of wave blocks are fixedly mounted on the abutment rod.

[0015] Preferably, a water tank is fixedly mounted on the bottom end of the base, and a water spray pipe is installed in the water tank.

[0016] A method for forming a high-pressure corrugated pipe, which is used for using the above-mentioned forming equipment, comprises the following steps:

[0017] S1, injecting the molten raw material into the gap of the spiral corrugated strip through the injection tube;

[0018] S2, the winding shaft is started to rotate, thereby driving the corrugated strip to rotate to match the molten plastic filling and molding;

[0019] S3, start the water spray pipe to water-cool the bellows;

[0020] S4, a blade in a scraping shape scrapes the plastic filled on the corrugated pipe evenly;

[0021] S5. After the forming is completed, the push block moves to change the blade shape and enables the blade to cut the corrugated strip.

[0022] In the above technical scheme, the present invention provides a high-pressure-resistant corrugated pipe forming equipment and a forming method, which have the following beneficial effects: In the present application, in the process of spirally filling the corrugated strips with plastic to form the corrugated pipe, the corrugated strips can be limited and the plastic can be scraped evenly by the arc-shaped blade. At the same time, after forming, the movement of the corrugated pipe can be pushed by the push block, and the blade can be transformed into a cutting shape during the movement to cut off the excess corrugated strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0024] Figure 1-2 All of them are schematic diagrams of three-dimensional structures provided by embodiments of the present invention;

[0025] Figure 3 The embodiment of the present invention provides Figure 2 Schematic diagram of some structures;

[0026] Figure 4 A schematic diagram of a split structure provided by an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a partial structure of a positioning plate provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of a portion of the structure of a side rod provided by an embodiment of the present invention;

[0029] Figure 7 A partial structural schematic diagram of a push block provided in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Base; 2. Fixed plate; 3. Bellows; 4. Corrugated strip; 51. Electric push rod; 52. Push block; 53. Telescopic member; 54. Push rod; 55. Bump; 56. Positioning plate; 561. Groove; 57. Abutment rod; 571. Wave block; 58. Rotating plate; 581. Rotating shaft; 59. Abutment wheel; 510. Sliding rod; 511. First round wheel; 512. Second round wheel; 61. Connecting plate; 62. Side rod; 621. Oblique block; 63. Connecting shaft; 64. Connecting frame; 65. Blade; 7. Water tank; 8. Spray pipe; 9. Injection tube; 10. Winding shaft; 11. Dislocation block. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] See also Figure 1-7 A high-pressure bellows forming device and forming method, comprising a base 1, a fixed disk 2 is fixedly mounted on the base 1, a winding shaft 10 is rotatably mounted on the fixed disk 2, and also comprising:

[0034] A push block 52, which is driven by the driving mechanism and is slidably arranged along the axial direction of the winding shaft 10;

[0035] A push rod 54 is movably arranged on the push block 52, and a protrusion 55 is fixedly mounted on the push rod 54;

[0036] The positioning plate 56 has an abutment rod 57 fixedly mounted at its bottom end, and a groove 561 is formed on the positioning plate 56;

[0037] A connecting plate 61, which is fixedly mounted on the bottom end of the top rod 54, and a blade 65 is rotatably mounted on the connecting plate 61;

[0038] A side rod 62 slidably mounted on the connecting plate 61;

[0039] After the forming is completed, the push block 52 is driven to move along the axial direction of the winding shaft 10 to push the corrugated tube 3 away. While the push block 52 is pushing, the blade 65 moves up and rotates to switch from the scraping state to the cutting state. At this time, the push block 52 pushes the corrugated tube 3 to move while cutting the corrugated strip 4.

[0040] The protrusion 55 is arranged on the top rod 54. In the molding process of the corrugated tube 3, the corrugated strip 4 is molded first. At this time, the molded corrugated strip 4 is spirally wound on the winding shaft 10, and the injection molded part on the base 1 is filled into the gap between two adjacent teeth of the spiral corrugated strip 4. At the same time, as the winding shaft 10 rotates, the corrugated strip 4 will be pushed to move forward, and the filled plastic will be evenly distributed in the gap between two adjacent teeth of the spiral corrugated strip 4 by the blade 65 in the scraping state. Then, the molded plastic in the molten state will be rotated to the bottom and water-cooled. When the corrugated tube 3 is molded to a certain length, the injection molded part 1 is started. The driving mechanism is driven, which will drive the push block 52 to move. At this time, the push block 52 will drive the telescopic member 53 and the push rod 54 to move until the protrusion 55 on the push rod 54 moves to the groove 561 position. At this time, the telescopic member 53 will push the push rod 54 to rise. As the push rod 54 rises, the blade 65 will move away from the corrugated strip 4. At this time, as the push block 52 continues to move, the blade 65 will rotate to a cutting shape through the cooperation of the abutment wheel 59 and the abutment rod 57. At this time, the blade 65 rotates clockwise by a certain angle to turn the arc blade downward, and then as the push block 52 moves, the blade 65 will cut the corrugated strip 4 through the horizontal movement of the telescopic member 53;

[0041] Among them reference Figure 7 The blade 65 in the scraping state is stuck on the inner wall of the adjacent corrugated strip 4 to limit the position of the corrugated strip 4. At the same time, when the plastic injected into the gap of the corrugated strip 4 is extruded, the arc blade 65 scrapes the extruded plastic evenly.

[0042] In another embodiment of the present invention: the driving mechanism includes an electric push rod 51, the fixed end of the electric push rod 51 is fixedly mounted on the fixed plate 2, and the free end of the electric push rod 51 is fixedly connected to the push block 52;

[0043] The electric push rod 51 is started to drive the push block 52 to move, so that the push block 52 drives the corrugated tube 3 to slide away on the winding shaft 10.

[0044] In another embodiment of the present invention: a connecting shaft 63 is rotatably mounted on the connecting plate 61, a connecting frame 64 is fixedly mounted on the connecting shaft 63, and a blade 65 is mounted on the connecting frame 64;

[0045] The blade 65 is rotatably mounted on the connecting plate 61 via a connecting frame 64 .

[0046] In another embodiment of the present invention: the blade 65 is arc-shaped, and two through holes are formed on the blade 65;

[0047] Extension plates are fixedly mounted on both ends of the connection frame 64;

[0048] The two through holes on the two extension plates and the blade 65 are aligned, so that it is convenient to pass bolts through to install the blade 65 on the connecting frame 64 .

[0049] In another embodiment of the present invention: a rotating plate 58 is disposed inside the top rod 54, a rotating shaft 581 is fixedly mounted on the rotating plate 58, and the rotating shaft 581 is rotatably connected to the top rod 54, and abutment wheels 59 are fixedly mounted at both ends of the rotating plate 58;

[0050] An inclined block 621 is fixedly mounted on the side rod 62;

[0051] The two abutment wheels 59 and the rotating plate 58 cooperate to form an "N" shape. When the push block 52 moves, it will drive the telescopic member 53 and the push rod 54 thereon to move. At this time, the movement of the push rod 54 will drive the rotating plate 58 to move. The two abutment wheels 59 on the rotating plate 58 are respectively located on both sides of the push rod 54, wherein the upper abutment wheel 59 is close to the abutment rod 57, and the lower abutment wheel 59 is close to the inclined block 621. As the push rod 54 moves, the upper abutment wheel 59 will continue to move toward the abutment rod 57, wherein the abutment rod 57 is provided with a bevel. As the upper abutment wheel 59 approaches the bevel, the bevel and the abutment rod 57 will squeeze the abutment wheel 59. At this time, the upper abutment wheel 59 will drive the rotating plate 58 to rotate. As the rotating plate 58 rotates, it will drive the lower abutment wheel 59 to approach the bevel block 621, thereby squeezing the bevel block 621. At this time, the bevel block 621 will drive the side rod 62 to move downward. Since the connecting shaft 63 and the side rod 62 are in contact, the movement of the side rod 62 will drive the connecting shaft 63 to rotate, thereby driving the connecting frame 64 and the blade 65 to rotate. At this time, refer to Figure 4 The blade 65 will rotate clockwise so that the blade edge of the arc surface is arranged downward.

[0052] In another embodiment of the present invention: a telescopic member 53 is slidably mounted on the push block 52, and a push rod 54 is fixedly mounted on the upper end of the telescopic member 53;

[0053] The telescopic member 53 includes an outer sleeve and an inner rod, the inner rod is slidably installed in the outer sleeve, the top rod 54 is installed at the top of the inner rod, and the outer sleeve slides horizontally inside the push block 52, and a return spring is fixedly installed between the bottom end of the inner rod and the inner bottom wall of the outer sleeve.

[0054] In another embodiment of the present invention: the push block 52 is internally rotatably mounted with a first round wheel 511 and a second round wheel 512, and the first round wheel 511 and the second round wheel 512 are fitted together;

[0055] The bottom end of the outer sleeve is fixedly mounted with a slide bar 510, and the first round wheel 511 fits with the bottom end of the slide bar 510. When the push block 52 moves, the second round wheel 512 contacts the winding shaft 10 and rotates. At this time, the second round wheel 512 drives the first round wheel 511 to rotate, and through the transmission of the first round wheel 511, the first round wheel 511 drives the telescopic member 53 to move in the opposite direction, so that the telescopic member 53 drives the blade 65 to move in the direction of the push block 52, so that the arc front of the blade 65 cuts the corrugated strip 4.

[0056] Furthermore, in the initial state, the second circular wheel 512 does not contact the winding shaft 10, and contacts the winding shaft 10 only after the push block 52 moves a certain distance, so that the telescopic rod will not move when the blade 65 rises, so as to avoid the blade 65 being stuck on the corrugated strip 4 when rotating, affecting the rotation of the blade 65.

[0057] In another embodiment of the present invention: a plurality of wave blocks 571 are fixedly mounted on the abutment rod 57;

[0058] When the abutment wheel 59 moves on the abutment rod 57, when the upper abutment wheel 59 moves to the horizontal plane of the abutment rod 57, the blade 65 will always be kept in a straight line. Figure 7 The cutting form shown, when the abutting wheel 59 continuously contacts the arc surface of the wave block 571, the abutting wheel 59 will drive the rotating plate 58 to rotate repeatedly, and at this time, the lower abutting wheel 59 will continuously approach and move away from the inclined block 621, wherein a slider is provided on the side rod 62, and a slide groove matching the size of the slider is provided on the connecting plate 61, the slider is inserted into the slide groove, and a connecting spring is fixedly installed between the slider and the inner top wall of the slide groove, when the lower abutting wheel 59 approaches the inclined block 621, it will push the side rod 62 down, and when the lower abutting wheel 59 moves away, the connecting spring will pull the side rod 62 to rise and reset, so that the side rod 62 moves up and down, and at this time, the blade 65 will continuously rotate slightly, so that the sharp end of the blade 65 becomes friction cutting, so that the cutting effect is better;

[0059] The other end of the corrugated strip 4 is directly extruded by another molding device and then connected to the winding shaft 10;

[0060] When the blade 65 cuts the corrugated strip 4, since the blade 65 and the push block 52 are slightly misaligned, the push block 52 will cooperate with the blade 65 to cut the corrugated strip 4. After the blade 65 rotates, although its overall position rises, the bottom end of the rotated blade 65 still completely covers the thickness of the corrugated strip 4, thereby facilitating the cutting of the corrugated strip 4. At the same time, the winding shaft 10 is provided with a long groove arranged along its axial direction to facilitate the movement of the blade 65 after rotation.

[0061] Furthermore, a dislocation block 11 is fixedly installed on the fixed disk 2, and the dislocation block 11 and the push block 52 in the initial state are dislocated, so that when the winding shaft 10 rotates and drives the corrugated strip 4 to wind, the corrugated strip 4 is positioned by the push block 52 and the dislocation of the dislocation block 11 to form a spiral shape.

[0062] In another embodiment of the present invention: a water tank 7 is fixedly mounted on the bottom end of the base 1, and a water spray pipe 8 is installed in the water tank 7;

[0063] The water spray pipe 8 is connected to a water source to spray water on the formed corrugated pipe 3 for cooling, and the water tank 7 is used to collect the falling water flow.

[0064] A method for forming a high-pressure corrugated pipe, which is used for using the above-mentioned forming equipment, comprises the following steps:

[0065] S1, injecting the molten raw material into the gap of the spiral corrugated strip 4 through the injection tube 9;

[0066] S2, the winding shaft 10 is started to rotate, thereby driving the corrugated strip 4 to rotate to match the molten plastic filling and molding;

[0067] S3, start the water spray pipe 8 to water-cool the bellows 3;

[0068] S4, the blade 65 in a scraping form scrapes the plastic filled on the corrugated tube 3;

[0069] S5 , after the forming is completed, the push block 52 moves to change the shape of the blade 65 and enables the blade 65 to cut the corrugated strip 4 .

[0070] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-pressure corrugated pipe forming device, comprising a base (1), a fixed disk (2) is fixedly mounted on the base (1), a winding shaft (10) is rotatably mounted on the fixed disk (2), characterized in that: Also includes: A push block (52) is driven by the driving mechanism to slide along the axial direction of the winding shaft (10); A push rod (54) is movably arranged on the push block (52), and a protrusion (55) is fixedly mounted on the push rod (54); A positioning plate (56) having an abutment rod (57) fixedly mounted at its bottom end, and a groove (561) is formed on the positioning plate (56); A connecting plate (61) is fixedly mounted on the bottom end of the top rod (54), and a blade (65) is rotatably mounted on the connecting plate (61); A side rod (62) slidably mounted on the connecting plate (61); After the forming is completed, the push block (52) is driven to move along the axial direction of the winding shaft (10) to push the corrugated tube (3) away. While the push block (52) is pushing, the blade (65) moves upward and rotates to switch from the scraping form to the cutting form. At this time, while the push block (52) pushes the corrugated tube (3) to move, the corrugated strip (4) is cut. A connecting shaft (63) is rotatably mounted on the connecting plate (61), a connecting frame (64) is fixedly mounted on the connecting shaft (63), and the blade (65) is mounted on the connecting frame (64); The blade (65) is arc-shaped, and has two through holes. Both ends of the connection frame (64) are fixedly mounted with extension plates; A rotating plate (58) is arranged inside the push rod (54), a rotating shaft (581) is fixedly mounted on the rotating plate (58), and the rotating shaft (581) and the push rod (54) are rotatably connected, and abutment wheels (59) are fixedly mounted on both ends of the rotating plate (58); An inclined block (621) is fixedly mounted on the side rod (62).

2. The high pressure-resistant corrugated pipe forming equipment according to claim 1, characterized in that: The driving mechanism comprises an electric push rod (51), the fixed end of the electric push rod (51) is fixedly mounted on a fixed plate (2), and the free end of the electric push rod (51) is fixedly connected to a push block (52).

3. The high pressure-resistant corrugated pipe forming equipment according to claim 1, characterized in that: A telescopic member (53) is slidably mounted on the push block (52), and a push rod (54) is fixedly mounted on the upper end of the telescopic member (53).

4. The high pressure-resistant corrugated pipe forming equipment according to claim 1, characterized in that: The push block (52) is rotatably mounted with a first circular wheel (511) and a second circular wheel (512), and the first circular wheel (511) and the second circular wheel (512) are fitted together.

5. The high pressure-resistant corrugated pipe forming equipment according to claim 1, characterized in that: A plurality of wave blocks (571) are fixedly mounted on the abutment rod (57).

6. The high pressure-resistant corrugated pipe forming equipment according to claim 1, characterized in that: A water tank (7) is fixedly mounted on the bottom end of the base (1), and a water spray pipe (8) is installed in the water tank (7).

7. A method for forming a high-pressure corrugated pipe, used for using the forming equipment described in any one of claims 1 to 6, characterized in that: The following steps are involved: S1, injecting molten raw materials into the gaps of the spiral corrugated strips (4) through an injection tube (9); S2, the winding shaft (10) is started to rotate, thereby driving the corrugated strip (4) to rotate to match the molten plastic filling and molding; S3, starting the water spray pipe (8) to water-cool the bellows (3); S4, a blade (65) in a scraping shape scrapes the plastic filled on the corrugated tube (3) evenly; S5. After the forming is completed, the push block (52) moves to change the shape of the blade (65) and enables the blade (65) to cut the corrugated strip (4).

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