Axial straight rib forming and winding equipment

Abstract

The utility model relates to axial straight rib forming and winding equipment which is designed for attaching a transverse rib on a winding type corrugated pipe, is arranged on an output axis of a winding type forming machine, and comprises an annular extruding machine head, a cooling air ring, a sizing pressing wheel ring, a servo motor, an axial positioning rod and an auxiliary supporting ring, the servo motor transmits power to the sizing pressing wheel ring, the annular extruding machine head, the auxiliary supporting ring and the sizing pressing wheel ring are linked through the axial positioning rod, and the servo motor drives the annular extruding machine head and the sizing pressing wheel ring at the same time so that it can be guaranteed that a transverse rib extruded by the annular extruding machine head can be located on the axis where a pressing wheel on the sizing pressing wheel ring is located. An annular extrusion machine head is provided, and the troublesome procedure that a transverse bar needs to be melted and bonded after being cooled and cut by a spiral winding pipe is avoided; and the annular extruding machine head can synchronously rotate with the winding type forming machine to keep the axial straightness of the transverse rib. And a cooling air ring is provided, so that the transverse rib can be cooled to be shaped before being pressed, and the transverse rib is prevented from being deformed when the transverse rib is pressed by the pressing wheel.

Description

Technical Field

[0001] The utility model relates to winding type corrugated pipe production equipment, in particular to axial straight rib forming winding equipment. Background Art

[0002] HDPE is a good pipe. It should not only have good economy, but also have a series of advantages such as stable and reliable interface, material impact resistance, crack resistance, aging resistance, corrosion resistance, etc. Compared with traditional pipes, HDPE pipeline system has a series of advantages. For this reason, HDPE corrugated pipes have replaced traditional pipes. HDPE corrugated pipes are divided into two production forms, one is extrusion double-wall corrugated pipes, and the other is winding corrugated pipes. The production process of double-wall corrugated pipes is an extrusion molding process. The mold size of the equipment should be the same as the diameter of the pipe. Therefore, if large-diameter HDPE double-wall corrugated pipes are to be produced, mechanical equipment with large-diameter molds is required, and the R&D cost of such equipment is quite high. Due to the production process, the winding pipe will not be limited by the size of the equipment mold, so large-diameter pipes can be manufactured in terms of molding process. At the same time, the utilization rate of winding production materials is higher than that of extrusion molding process, which can effectively save costs.

[0003] HDPE corrugated pipes usually have qualified ring stiffness, but there may be unexpected bending when facing bending. For this reason, it is necessary to add axially parallel transverse ribs to increase the bending resistance. Traditional extruded corrugated pipes can extrude transverse ribs at the same time as the outer shell is extruded. However, because the design usually also designs circumferential reinforcement ribs for ring stiffness, the combination of the surrounding reinforcement ribs and the transverse ribs will cause the extruded transverse ribs to be discontinuous, thereby reducing the maximum bending resistance of the transverse ribs. Due to its production process, traditional wound corrugated pipes cannot attach transverse ribs while winding. If the transverse ribs need to be reattached after cutting, the production speed will be reduced, thereby losing the production advantage of wound corrugated pipes.

[0004] In order to attach transverse ribs to the finished HDPE winding pipe while using the winding molding process, and the transverse ribs need to be consistent with the winding molding pipe to have the ability to produce continuously, it is necessary to design the plastic extruder head to rotate synchronously with the winding molding pipe while extruding the transverse ribs. At the same time, the melting of the thermoplastic needs to be pressed to ensure a stable and reliable connection. For this purpose, the existing pressing wheel needs to be used, and the pressing wheel needs to rotate synchronously with the extruder head to maintain reliable pressing. Summary of the invention

[0005] The utility model is an axial straight rib forming and winding device designed for attaching transverse ribs on a winding type corrugated pipe.

[0006] An axial straight rib forming winding device is arranged on the output axis of a winding forming machine, comprising: an annular extruder head, a cooling air ring, a shaping pressure wheel ring, a servo motor, an axial positioning rod and an auxiliary support ring;

[0007] The servo motor transmits power to the shaping press wheel ring, and links the annular extruder head, the auxiliary support ring and the shaping press wheel ring through the axial positioning rod, so that the servo motor drives the annular extruder head and the shaping press wheel ring at the same time to ensure that the transverse ribs extruded by the annular extruder head are located on the axis of the press wheel on the shaping press wheel ring;

[0008] The hot melt plastic from the extruder is input into the annular extruder head through the pipeline. The annular extruder head keeps the synchronous speed with the rotating shaft of the winding molding machine. When the winding corrugated tube manufactured by the winding molding machine passes through the center of the annular extruder head, the transverse ribs extruded by the annular extruder head are attached to it.

[0009] The outer periphery of the transverse ribs is cooled and shaped by a cooling air ring to avoid deformation of the hot-melt plastic when it is extruded. Traditional fans can only blow from the outside of the device to the forming part because they need to be driven by a motor, which can easily result in incomplete blowing. Too much wind pressure can also cause the transverse ribs to twist. For this reason, the use of an annular air outlet device can avoid the aforementioned situation. The air outlet air ring structure provided by the utility model uses an airfoil (the cross section is also called a blade cross section) to effectively expand the air output, thereby ensuring the cooling needs of the transverse ribs.

[0010] The shaping press wheel ring comprises: a main ring body, a press wheel ring fixing frame and a plurality of press wheels;

[0011] The front and back sides of the main ring body are provided with grooves of the same diameter, and the grooves are in the form of circular rings on the main ring body; the front and back pressure wheel ring fixing frames are mirror images and relatively fixed;

[0012] The cross section of the pressing wheel ring fixing frame is a side-mounted convex structure, the convex edge matches the groove, and the convex edge is stuck in the groove of the main bracket wheel;

[0013] A plurality of axial through holes are arranged on the circumferential surface of the main ring body, and the axial through holes form a circular array; the axial positioning rods are matched with the axial through holes;

[0014] A plurality of radial mounting holes are arranged on the inner circumference of the main ring body, and the tail of the pressure wheel is installed in the radial mounting holes;

[0015] The servo motor cooperates with the outer periphery of the main ring body through a pulley and transmits power to the main ring body.

[0016] Preferably, the annular extruder head comprises:

[0017] The housing is fixed to the external frame and comprises at least two parts, which are assembled into a ring and contain a groove for accommodating the extrusion ring;

[0018] An extrusion ring is embedded in the shell, a connecting groove is arranged on the top surface of the ring, an extrusion die is installed on the inner ring, the connecting groove is connected with the extrusion die, an axial through hole is arranged axially on the surface of the extrusion ring, and the axial through holes are arranged at equal intervals on the extrusion ring;

[0019] The groove of the shell and the communicating groove of the extrusion ring cooperate to form an annular cavity;

[0020] An input hole is arranged on the shell body, the input hole is connected to an external plastic extruder, and the input hole is connected to the annular cavity.

[0021] Preferably, the extrusion ring includes two ring bodies, wherein the portion embedded in the housing groove is an outer ring body, and the outer ring body includes a connecting groove;

[0022] The inner ring body has a smaller diameter than the outer ring body, and the inner ring body is fixedly connected to the outer ring body;

[0023] The through hole is arranged on the inner ring body, and the extrusion die is installed on the inner ring of the inner ring body.

[0024] Preferably, it further comprises blocking rings, two of which are arranged on the front and back sides of the shell in the axial direction, and are used to block the gap between the shell and the extrusion ring;

[0025] The cross section of the blocking ring is L-shaped, the vertical surface is detachably connected to the shell, and the horizontal surface cooperates with the inner ring edge of the shell and the extrusion ring.

[0026] Preferably, the cross section of the cooling air ring is an airfoil cross section, wherein the leading edge is an arc and the trailing edge is a vertical plane;

[0027] The front edge, outer peripheral surface, rear edge and inner peripheral surface of the cooling air ring form a hollow cavity;

[0028] The outer diameter of the leading edge is equal to the outer diameter of the trailing edge; the inner diameter of the leading edge is smaller than the inner diameter of the trailing edge;

[0029] An air outlet slot is provided at the intersection of the front edge and the inner peripheral surface of the cooling air ring, and the air outlet slot is in a ring shape;

[0030] A bulge extends inwardly from the junction point between the inner circumference of the cooling air ring and the front edge, and the cross section from the bulge to the inner circumference of the cooling air ring is an arc;

[0031] An air inlet is arranged on the outer peripheral surface of the cooling air ring.

[0032] Preferably, the cross section of the cooling air ring is an airfoil cross section, wherein the leading edge is an arc; the leading edge, the outer peripheral surface, the trailing edge, and the inner peripheral surface of the cooling air ring form a hollow cavity;

[0033] The inner diameter of the leading edge is equal to the inner diameter of the trailing edge; the outer diameter of the leading edge is greater than the outer diameter of the trailing edge;

[0034] An air outlet slot is provided at the intersection of the front edge and the inner peripheral surface of the cooling air ring, and the air outlet slot is in a ring shape;

[0035] A bulge extends inwardly from the junction point between the inner circumference of the cooling air ring and the front edge, and the cross section from the bulge to the inner circumference of the cooling air ring is an arc;

[0036] An air inlet is arranged on the outer peripheral surface of the cooling air ring.

[0037] Preferably, the end of the protrusion is an arc surface, and the arc angle is >220°

[0038] Preferably, the machine for providing cooling air to the air inlet is a fan or an air compressor.

[0039] Preferably, the auxiliary support ring comprises: an auxiliary support ring body and at least one pair of supporting rollers;

[0040] A plurality of axial through holes are arranged on the circumferential surface of the auxiliary support ring body, and the axial through holes form a circular array; the axial positioning rods are matched with the axial through holes;

[0041] The supporting roller is arranged in the lower half circle of the auxiliary support ring body and is tangent to the outer periphery of the auxiliary support ring body. The width of the supporting roller is greater than the thickness of the auxiliary support ring body, and a groove is opened on the wheel surface of the supporting roller so that the auxiliary support ring body is stuck in the groove, thereby reducing the axial deviation of the side bracket wheel.

[0042] The utility model has the following beneficial effects: providing an annular extruder head, avoiding the troublesome process of spirally winding a tube, cooling and cutting, and then melting and bonding the transverse ribs; the annular extruder head can rotate synchronously with the winding forming machine to keep the transverse ribs axially straight. A cooling air ring is provided to ensure that the transverse ribs can be cooled to a fixed shape before pressing, avoiding deformation of the transverse ribs by the pressing roller / pressing rod / pressing wheel when pressing the transverse ribs. The synchronization problem between multiple ring devices is conveniently and simply synchronized through the axial positioning rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 Overall structure position relationship diagram;

[0044] Figure 2 Axial view of the shaping wheel ring;

[0045] Figure 3 Circumferential section view of the shaping press wheel ring;

[0046] Figure 4 Schematic diagram of circumferential section of pressure wheel installation;

[0047] Figure 5 Axial view of the annular extruder head;

[0048] Figure 7 Front view of auxiliary support ring;

[0049] Figure 6 Circumferential section of annular extruder;

[0050] Figure 8 Example 1: A three-dimensional diagram of the cooling air ring;

[0051] Fig. 9 Example 1: Cross-sectional view of cooling air ring;

[0052] Fig.10 Example 2: A three-dimensional diagram of the cooling air ring;

[0053] Fig.11 Example 2 Cooling air profile;

[0054] In the figure: 100, shaping pressure wheel ring, 200, annular extruder head, 300, auxiliary support ring, 101, pulley, 102, servo motor, 103, axial positioning rod, 104, main ring body, 105, pressure wheel ring fixing frame, 106, axial through hole, 107, pressure wheel, 1, shell, 2, extrusion ring, 3, die, 4, axial through hole of annular extruder head, 5, input hole, a, bellows, 6, blocking ring, 7, annular cavity, 301, supporting roller, 300-1, axial through hole of auxiliary support ring, 400a, cooling air ring of embodiment 1, 400b, cooling air ring of embodiment 2, 401, leading edge, 402, trailing edge, 403, protrusion, 404, air outlet gap. DETAILED DESCRIPTION

[0055] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0056] like Figures 1 to 9 As shown, the

[0057] An axial straight rib forming winding device is arranged on the output axis of a winding forming machine, comprising: an annular extruder head 200, a cooling air ring, a shaping pressure wheel ring 100, a servo motor, an axial positioning rod 103 and an auxiliary support ring 300;

[0058] The servo motor transmits power to the shaping press wheel ring, and links the annular extruder head, the auxiliary support ring and the shaping press wheel ring through the axial positioning rod, so that the servo motor drives the annular extruder head and the shaping press wheel ring at the same time to ensure that the transverse ribs extruded by the annular extruder head are located on the axis of the press wheel on the shaping press wheel ring;

[0059] The shaping pressing wheel ring 100 comprises: a main ring body 104, a pressing wheel ring fixing frame 105 and a plurality of pressing wheels 107;

[0060] The front and back sides of the main ring body are provided with grooves of the same diameter, and the grooves are in the form of circular rings on the main ring body; the front and back pressure wheel ring fixing frames are mirror images and relatively fixed;

[0061] The cross section of the pressing wheel ring fixing frame is a side-mounted convex structure, the convex edge matches the groove, and the convex edge is stuck in the groove of the main bracket wheel;

[0062] A plurality of axial through holes 106 are arranged on the circumferential surface of the main ring body, and the axial through holes form a circular array; the axial positioning rods are matched with the axial through holes;

[0063] A plurality of radial mounting holes are arranged on the inner circumference of the main ring body, and the tail of the pressure wheel is installed in the radial mounting holes;

[0064] The servo motor 102 cooperates with the outer periphery of the main ring body through the pulley 101 and transmits power to the main ring body.

[0065] The pressing wheel adopts the existing pressing wheel.

[0066] The ring extruder head includes:

[0067] The housing 1 is fixed to the external frame and comprises at least two parts, which are assembled into a ring shape and contain a groove for accommodating the extrusion ring;

[0068] Extrusion ring 2, the extrusion ring is embedded in the shell, a connecting groove is arranged on the top surface of the ring, and an extrusion die 3 (such as Figure 6 b), the connecting groove is connected to the extrusion die 3, and an axial through hole 4 is axially arranged on the surface of the extrusion ring (such as Figure 6 In c), the axial through holes 4 are arranged at equal intervals on the extrusion ring;

[0069] The groove of the housing and the communicating groove of the extrusion ring cooperate to form an annular cavity 7;

[0070] An input hole 5 is provided on the housing, and the input hole is connected to an external plastic extruder, and the input hole is connected to the annular cavity.

[0071] The extrusion ring includes two ring bodies, wherein the part embedded in the housing groove is the outer ring body, and the outer ring body includes a connecting groove;

[0072] The inner ring body has a smaller diameter than the outer ring body, and the inner ring body is fixedly connected to the outer ring body;

[0073] The through hole is arranged on the inner ring body, and the extrusion die 3 is installed on the inner ring of the inner ring body.

[0074] Blocking rings 6, two of which are arranged on the front and back sides of the shell in the axial direction, and are used to block the gap between the shell and the extrusion ring;

[0075] The cross section of the blocking ring is L-shaped, the vertical surface is detachably connected to the shell, and the horizontal surface cooperates with the inner ring edge of the shell and the extrusion ring.

[0076] The transverse ribs extruded from the die 3 are bonded to the corrugated tube a outputted from the winding forming machine.

[0077] The cross section of the cooling air ring 400a is an airfoil cross section, wherein the leading edge is an arc and the trailing edge is a vertical plane;

[0078] The front edge 401, the outer peripheral surface, the rear edge 402, and the inner peripheral surface of the cooling air ring form a hollow cavity;

[0079] The outer diameter of the leading edge is equal to the outer diameter of the trailing edge; the inner diameter of the leading edge is smaller than the inner diameter of the trailing edge;

[0080] An air outlet slot 404 is provided at the intersection of the front edge and the inner peripheral surface of the cooling air ring, and the air outlet slot 404 is annular;

[0081] A protrusion 403 extends inward from the junction of the inner circumference of the cooling air ring and the front edge, and the cross section from the protrusion to the inner circumference of the cooling air ring is an arc;

[0082] An air inlet is arranged on the outer peripheral surface of the cooling air ring.

[0083] The end of the protrusion is a circular arc surface with an arc angle of >220°

[0084] The mechanical supply of cooling air to the air inlet uses a fan or air compressor.

[0085] The auxiliary support ring 300 comprises: an auxiliary support ring body and at least one pair of supporting rollers 301;

[0086] A plurality of axial through holes 300-1 are arranged on the circumferential surface of the auxiliary support ring body, and the axial through holes form a circular array; the axial positioning rods cooperate with the axial through holes;

[0087] The supporting roller is arranged in the lower half circle of the auxiliary support ring body and is tangent to the outer periphery of the auxiliary support ring body. The width of the supporting roller is greater than the thickness of the auxiliary support ring body, and a groove is opened on the wheel surface of the supporting roller so that the auxiliary support ring body is stuck in the groove, thereby reducing the axial deviation of the side bracket wheel. Example

[0088] The difference between this embodiment and embodiment 1 is that the structure of the cooling air ring is different. The cross section of the cooling air ring 400b is an airfoil cross section, wherein the leading edge is an arc; the leading edge 401, the outer peripheral surface, the trailing edge 402, and the inner peripheral surface of the cooling air ring form a hollow cavity;

[0089] The inner diameter of the leading edge is equal to the inner diameter of the trailing edge; the outer diameter of the leading edge is greater than the outer diameter of the trailing edge;

[0090] An air outlet slot 404 is provided at the intersection of the front edge and the inner peripheral surface of the cooling air ring, and the air outlet slot is in a ring shape;

[0091] A protrusion 403 extends inward from the junction of the inner circumference of the cooling air ring and the front edge, and the cross section from the protrusion to the inner circumference of the cooling air ring is an arc;

[0092] An air inlet is arranged on the outer peripheral surface of the cooling air ring.

[0093] The difference between the air outlet of the cooling air ring in this embodiment and the cooling air ring in Embodiment 1 is that the axial distance of the centripetal convergence is short, the angle of subsequent wind direction diffusion is large, and the applicable transverse ribs are different.

[0094] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An axial straight rib forming and winding device, arranged on the output axis of a winding forming machine, characterized in that: include: Ring extruder head, cooling air ring, shaping pressure wheel ring, servo motor, axial positioning rod and auxiliary support ring; The servo motor transmits power to the shaping press wheel ring, and links the annular extruder head, the auxiliary support ring and the shaping press wheel ring through the axial positioning rod, so that the servo motor drives the annular extruder head and the shaping press wheel ring at the same time to ensure that the transverse ribs extruded by the annular extruder head are located on the axis of the press wheel on the shaping press wheel ring; The shaping press wheel ring comprises: a main ring body, a press wheel ring fixing frame and a plurality of press wheels; The front and back sides of the main ring body are provided with grooves of the same diameter, and the grooves are in the form of circular rings on the main ring body; the front and back pressure wheel ring fixing frames are mirror images and relatively fixed; The cross section of the pressing wheel ring fixing frame is a side-mounted convex structure, the convex edge matches the groove, and the convex edge is stuck in the groove of the main bracket wheel; A plurality of axial through holes are arranged on the circumferential surface of the main ring body, and the axial through holes form a circular array; the axial positioning rods are matched with the axial through holes; A plurality of radial mounting holes are arranged on the inner circumference of the main ring body, and the tail of the pressure wheel is installed in the radial mounting holes; The servo motor cooperates with the outer periphery of the main ring body through a pulley and transmits power to the main ring body.

2. The axial straight rib forming and winding equipment according to claim 1 is characterized in that: The ring extruder head includes: The housing is fixed to the external frame and comprises at least two parts, which are assembled into a ring and contain a groove for accommodating the extrusion ring; An extrusion ring is embedded in the shell, a connecting groove is arranged on the top surface of the ring, an extrusion die is installed on the inner ring, the connecting groove is connected with the extrusion die, an axial through hole is arranged axially on the surface of the extrusion ring, and the axial through holes are arranged at equal intervals on the extrusion ring; The groove of the shell and the communicating groove of the extrusion ring cooperate to form an annular cavity; An input hole is arranged on the shell body, the input hole is connected to an external plastic extruder, and the input hole is connected to the annular cavity.

3. The axial straight rib forming and winding equipment according to claim 2 is characterized in that: The extrusion ring includes two ring bodies, wherein the part embedded in the housing groove is the outer ring body, and the outer ring body includes a connecting groove; The inner ring body has a smaller diameter than the outer ring body, and the inner ring body is fixedly connected to the outer ring body; The through hole is arranged on the inner ring body, and the extrusion die is installed on the inner ring of the inner ring body.

4. The axial straight rib forming and winding equipment according to claim 3 is characterized in that: It also includes blocking rings, two of which are arranged on the front and back sides of the shell in the axial direction and are used to block the gap between the shell and the extrusion ring; The cross section of the blocking ring is L-shaped, the vertical surface is detachably connected to the shell, and the horizontal surface cooperates with the inner ring edge of the shell and the extrusion ring.

5. The axial straight rib forming and winding equipment according to claim 1, characterized in that: The cross section of the cooling air ring is an airfoil section, in which the leading edge is an arc and the trailing edge is a vertical plane; The front edge, outer peripheral surface, rear edge and inner peripheral surface of the cooling air ring form a hollow cavity; The outer diameter of the leading edge is equal to the outer diameter of the trailing edge; the inner diameter of the leading edge is smaller than the inner diameter of the trailing edge; An air outlet slot is provided at the intersection of the front edge and the inner peripheral surface of the cooling air ring, and the air outlet slot is in a ring shape; A bulge extends inwardly from the junction point between the inner circumference of the cooling air ring and the front edge, and the cross section from the bulge to the inner circumference of the cooling air ring is an arc; An air inlet is arranged on the outer peripheral surface of the cooling air ring.

6. The axial straight rib forming and winding equipment according to claim 1, characterized in that: The cross section of the cooling air ring is an airfoil cross section, wherein the leading edge is an arc; the leading edge, outer peripheral surface, trailing edge and inner peripheral surface of the cooling air ring form a hollow cavity; The inner diameter of the leading edge is equal to the inner diameter of the trailing edge; the outer diameter of the leading edge is greater than the outer diameter of the trailing edge; An air outlet slot is provided at the intersection of the front edge and the inner peripheral surface of the cooling air ring, and the air outlet slot is in a ring shape; A bulge extends inwardly from the junction point between the inner circumference of the cooling air ring and the front edge, and the cross section from the bulge to the inner circumference of the cooling air ring is an arc; An air inlet is arranged on the outer peripheral surface of the cooling air ring.

7. The axial straight rib forming and winding equipment according to claim 5 or 6, characterized in that: The end of the protrusion is an arc surface, and the arc angle is greater than 220°.

8. The axial straight rib forming and winding equipment according to claim 5 or 6, characterized in that: The mechanical supply of cooling air to the air inlet uses a fan or air compressor.

9. The axial straight rib forming and winding device according to claim 1, characterized in that: The auxiliary support ring comprises: an auxiliary support ring body and at least one pair of supporting rollers; A plurality of axial through holes are arranged on the circumferential surface of the auxiliary support ring body, and the axial through holes form a circular array; the axial positioning rods are matched with the axial through holes; The supporting roller is arranged in the lower half circle of the auxiliary support ring body and is tangent to the outer periphery of the auxiliary support ring body. The width of the supporting roller is greater than the thickness of the auxiliary support ring body, and a groove is opened on the wheel surface of the supporting roller so that the auxiliary support ring body is stuck in the groove, thereby reducing the axial deviation of the side bracket wheel.

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