Pressure enhanced winding structure wall pipe forming equipment

Abstract

The forming equipment for the pressure-enhanced winding structure wall pipe is designed aiming at the pressure-enhanced winding structure wall pipe so as to meet the sight line function required by the production process of the pressure-enhanced winding structure wall pipe, for example, two layers of sheets are pressed at one time, the bonding in a pressing mode can be met, and the production efficiency is improved. And the requirements of two winding processes can be continuously met. Pressure enhanced winding structure wall pipe forming equipment comprises a steel rail, a movable trolley table, a forming pipe, a plurality of plastic extruders, a plurality of vacuum shaping boxes and a controllable positioning device, and further comprises an upper positioning frame, a lower positioning frame and two rolling rod devices, and a guide rail and a sliding block are arranged between the upper positioning frame and the lower positioning frame; a driving device is arranged between the upper positioning frame and the lower positioning frame; the controlled pressure cylinder is fixedly connected with a rack where the controllable positioning device is located; and a reinforcing rib feeding device is arranged on the outer side of the steel rail on the opposite side of the controllable positioning device and is used for winding a reinforcing rib on the forming pipe.

Description

Technical Field

[0001] The utility model relates to winding tube forming equipment, in particular to pressure-enhanced winding structure wall tube forming equipment. Background Art

[0002] Existing winding pipes are often designed for smaller diameters, such as 0.4m and 0.6m corrugated pipes. Larger diameters will produce greater internal and external pressures. For example, when the diameter is 1.6m (inner diameter), the internal pressure needs to withstand a strength of 0.6MPa, while the external pressure needs to have a strength of 16KN / M 2 The ring stiffness of the above-mentioned caliber can be achieved by a plastic extruder that directly extrudes solid arm tubes. However, the production efficiency of the plastic extruder that directly extrude solid wall tubes is low, and the plastic extruder often has an upper limit on the extrusion flow rate. Replacing a larger-scale plastic extruder not only increases the cost, but also requires the design of relevant heat dissipation methods for the extruded materials. In order to ensure that the strength of the pipe is qualified, the finished pipe needs to be additionally cooled, which will further reduce production efficiency. The advantage of the winding tube is that compared with the molding machine that directly extrude solid wall tubes, the overall scale required is smaller, and no more auxiliary cooling equipment is required. However, the conventional winding method is not sufficient to support the internal and external pressure requirements of pipes with a diameter of 1.6m and above. In order to achieve the aforementioned ring stiffness requirements, a pipe wall profile structure is designed such as Figure 2 The winding tube forming tube shown in the figure, wherein 1, 2, 3, and 4 are sheets of the same thickness, the thickness of a single sheet is 12.5 mm, and the total thickness of the 4 sheets is 50 mm. The process of producing such a winding tube forming tube is as follows Figure 3 As shown, during the first winding, refer to A1 to A3, and directly wind the two layers of sheets marked 1 and 2. When pressing, first press the layer where 1 is located, and then press the layer where 2 is located. Therefore, the winding of two layers of sheets can be completed directly in one winding molding. When the first winding reaches the end of the forming tube, the axial direction of the forming tube moves in the opposite direction, and the circumferential rotation remains unchanged. The second winding from B1 to B3 begins. The second winding will wind the two layers of sheets marked 3 and 4 on the forming tube, of which 1 and 3 are continuous, and 2 and 4 are continuous. When winding the 3rd and 4th layers of sheets, the sheet marked 3 will be pressed first, and then the sheet marked 4 will be pressed until the forming tube moves back to the starting point to complete the basic tube wall of the winding tube. After the basic tube wall is completed, the reinforcing rib marked 5 needs to be bonded to the basic tube wall, and the forming tube uses the movement direction and circumferential direction of the first winding. After the reinforcing rib bonding process is completed, the pressure-enhanced winding structure wall tube is completed. Obviously, the production of this pressure-enhanced winding structure wall tube requires a kind of equipment. Summary of the invention

[0003] The utility model is a pressure-reinforced winding structure wall tube forming device designed for a pressure-reinforced winding structure wall tube involved in the background technology, so as to meet the visual functions required by the pressure-reinforced winding structure wall tube in the production process, such as pressing two layers of sheets at one time, meeting the pressing mode bonding, and being able to complete the two winding processes uninterruptedly.

[0004] A pressure-enhanced winding structure wall tube forming device comprises: a steel rail, a moving platform, a forming tube, a plurality of plastic extruders, and a plurality of vacuum forming boxes. The moving platform is arranged on the steel rail and moves forward and backward along the steel rail. The plastic extruder extrudes the plastic sheet and winds it onto the forming tube. The forming tube is arranged on the top of the moving platform, and the moving platform controls the rotation of the forming tube.

[0005] The plastic extruder winds the extruded sheet onto the forming tube through a controllable positioning device;

[0006] The controllable positioning device comprises: an upper positioning frame, a lower positioning frame and two roller devices. The upper positioning frame and the lower positioning frame have the same size and are matched with the sheet size. A guide rail and a slider are arranged between the upper positioning frame and the lower positioning frame to enable the upper positioning frame and the lower positioning frame to slide relative to each other. The direction of the guide rail is parallel to the axis of the forming tube. A driving device is arranged between the upper positioning frame and the lower positioning frame, and the driving device drives the upper positioning frame and the lower positioning frame to slide relative to each other.

[0007] The output direction line of the controllable positioning device is perpendicular to the movable direction line of the rail;

[0008] The circumference of the forming tube is used for positioning, and a controlled pressing cylinder is arranged on the same circumference as the controllable positioning device. The controlled pressing cylinder is fixedly connected to the frame where the controllable positioning device is located, and the controlled pressing cylinder is used to press the sheet;

[0009] A reinforcing rib feeding device is arranged on the outer side of the rail opposite to the controllable positioning device, and the reinforcing rib feeding device is used to wind the reinforcing rib onto the forming tube.

[0010] In a pressure-enhanced winding structure wall tube forming device, the rails, the moving platform, the forming tube, the plastic extruder and the vacuum shaping box all adopt the existing winding equipment to meet the requirements of the size standard.

[0011] The main problem of this application is simultaneous winding and continuous winding. The traditional winding method requires a single sheet plastic extruder to extrude the sheet and wind it on the forming tube. Each layer needs to be cut off once and wound repeatedly for 4 layers to produce a tube wall that meets the ring stiffness requirements. The device applied for by the utility model can simultaneously extrude the sheet by two plastic extruders for winding, and when winding to the end, it does not need to be cut off and rewound. Instead, the relative positions of the upper positioning frame and the lower positioning frame in the controllable positioning device are changed at the end to adapt to the change of winding direction, so as to achieve the purpose of continuous extrusion of the plastic extruder, that is, avoiding the process of rewinding.

[0012] The molding equipment of the present application can reduce the number of times the mobile platform moves back and forth, thereby speeding up the production process. At the same time, it does not need to be cut off and rewound, which optimizes the production process and is beneficial to the safety of production personnel.

[0013] When the inner tube wall is wound, the sheet is cut off and the sheet extruder is stopped. The staff will melt and wind the reinforcing ribs, and complete the winding of the reinforcing ribs through the cooperation of the moving platform and the forming tube, further strengthening the ring stiffness of the finished tube.

[0014] Preferably, the driving device uses an electric guide rail, and the electric guide rail is installed parallel to the guide rail;

[0015] One of the frame bodies of the upper positioning frame or the lower positioning frame is fixed to the rack.

[0016] Preferably, the driving device uses a pneumatic telescopic rod;

[0017] One of the upper positioning frame or the lower positioning frame is fixed to the frame, the fixed frame is called the inner ring sheet frame, and the relatively movable frame is called the outer ring sheet frame;

[0018] The axis of the movable end of the pneumatic telescopic rod is parallel to the guide rail, the pump body is fixed on the frame, the movable end is fixed to the outer ring sheet frame, and the pneumatic telescopic rod drives the outer ring sheet frame to slide relative to the inner ring sheet frame.

[0019] Preferably, the two roller devices are respectively an upper positioning frame and a lower positioning frame for conveying sheets extruded by two plastic extruders;

[0020] The width of the rolling rod of the rolling rod device is greater than the maximum movable spacing formed between the upper positioning frame and the lower positioning frame;

[0021] The extended lines of the axes of the two rolling rod devices form an angle, and the angle is between 10° and 30°.

[0022] Preferably, there are two controlled pressure cylinders, which are arranged in a mirror image;

[0023] A single controlled pressing cylinder includes: a segmented cylinder, a cylinder support, a pressing cylinder positioning frame, and an electromagnetic telescopic rod;

[0024] The cylinder support is L-shaped, with the long side inserted into the cylinder positioning frame and the short side inserted into the segmented cylinder shaft;

[0025] The segmented cylinder includes two segments with different diameters;

[0026] A return spring is arranged between the cylinder positioning frame and the cylinder support for pressing the segmented cylinder onto the surface of the forming tube;

[0027] The cylinder support penetrates the cylinder positioning frame, and an electromagnetic telescopic rod is arranged at the tail of the cylinder positioning frame. The telescopic end of the electromagnetic telescopic rod is fixed to the cylinder support, and the electromagnetic telescopic rod drives the cylinder support to lift the segmented cylinder. The coaxial electromagnetic telescopic rod can control the cylinder support to lift the cylinder.

[0028] Since the sheet is wound twice, and the inner and outer axis positions of the two times are different, two controlled pressing cylinders are needed to adapt to different axial offsets. Take the clockwise rotation of the forming tube from the left to the right side of the forming tube as an example. When the 1st and 2nd layers are wound, the left controlled pressing cylinder works first, and the right controlled pressing cylinder is in a controlled suspension state. When the sheet is wound to the right end of the forming tube, it starts to wind 3 and 4 layers. At this time, the controllable positioning device switches the working state, and the left controlled pressing cylinder is controlled to be suspended, and the right controlled pressing cylinder is lowered. Keep rotating the forming tube clockwise, and the moving platform moves from right to left at this time, and the right controlled pressing cylinder performs compaction operations.

[0029] Preferably, the reinforcing rib feeding device comprises:

[0030] The positioning roller group includes two rollers whose rotation axis are arranged at an angle of 60°. The rollers are fixed on the external frame. The triangular space formed by the rollers is used to position the reinforcing ribs.

[0031] A hot air cylinder is arranged directly above the positioning roller group and the air outlet heats the reinforcing ribs vertically downward;

[0032] The reinforcing rib pressing cylinder is arranged on the circumference of the positioning roller group, and the body of the reinforcing rib pressing cylinder matches the reinforcing rib. The reinforcing rib pressing cylinder adopts the existing pressing cylinder method, and only the cylinder body of the pressing cylinder is adaptively modified to adapt to the shape of the reinforcing rib.

[0033] Preferably, the reinforcement production includes: three plastic extruders and three vacuum shaping boxes;

[0034] The die of the first plastic extruder includes a plurality of hollow holes arranged along the vertical line of the reinforcing rib, the extrudate of the first plastic extruder is fed into the second plastic extruder through the first vacuum shaping box, the extrudate of the second plastic extruder is fed into the third plastic extruder through the second vacuum shaping box, and the extrudate of the third plastic extruder is shaped in the third vacuum shaping box and then wound onto the forming tube through the reinforcing rib feeding device;

[0035] The second plastic extruder and the third plastic extruder are both co-extrusion compound type plastic extruders;

[0036] The dies of the first plastic extruder, the second plastic extruder and the third plastic extruder are all equilateral triangles.

[0037] Preferably, the setting length of the rail is greater than 2.2 times the length of the forming tube; the setting position of the controllable positioning device and the reinforcement rib feeding device is at the midpoint of the rail.

[0038] The utility model has the beneficial effects of: replacing the method of winding one layer of sheet material at a time with the method of winding two layers of sheet material at a time, reducing the number of repeated axial movements of the formed tube during the production of the pressure-reinforced winding structure wall tube, thereby increasing the production efficiency. The strength of the produced product is maintained by maintaining the pressure-bonded bonding between the sheets of the same layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of 12 layers of winding on the side of the forming tube in Example 1;

[0040] Figure 2 Schematic diagram of the cross-section of the tube wall of the pressure-enhanced wound structure wall tube used in the background art;

[0041] Figure 3 A schematic diagram of the process of producing a basic pipe wall of a pressure-enhanced winding structure wall pipe according to the utility model;

[0042] Figure 4 Schematic diagram of 12 layers of winding on the side of the forming tube in Example 2;

[0043] Figure 5 Schematic diagram of the installation position of the reinforcement feeding device;

[0044] Figure 6 A schematic top view of the controllable positioning device in Example 1;

[0045] Figure 7 A schematic side view of the controllable positioning device in Example 1;

[0046] Figure 8 Schematic diagram of a single controlled pressure cylinder structure;

[0047] Fig. 9 Positioning roller assembly matching diagram;

[0048] Fig.10 Plastic extrusion equipment arrangement diagram;

[0049] In the figure: 1, innermost sheet, 2, second sheet, 3, third sheet, 4, outermost sheet, 5, reinforcing rib shell, 6, reinforcing rib middle layer, 7, reinforcing rib core, 8, heat dissipation hole, 100, forming tube, 101, first plastic extruder, 102, first vacuum setting box, 103, rail, 104, plastic extruder of sheet, 200, controllable positioning device, 201, upper positioning frame, 202, lower positioning frame, 203, guide rail and slider, 300, controlled pressing cylinder, 301, segmented cylinder, 302, cylinder bracket, 303, return spring, 304, pressing cylinder positioning frame, 305, electromagnet device, 400, roller device, 401, roller of roller device, 500, positioning roller group, 510, roller of positioning roller group, 501, reinforcing rib pressing cylinder, 502, hot air cylinder. DETAILED DESCRIPTION

[0050] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings. Example

[0051] like Figure 1 As shown, the pressure-reinforced winding structure wall tube forming equipment comprises: a rail 103, a moving platform, a forming tube 100, a plurality of plastic extruders, a plurality of vacuum shaping boxes, a controllable positioning device and a reinforcing rib feeding device.

[0052] The movable platform is arranged on the rail and moves forward and backward along the rail. The plastic extruder 104 extrude the plastic sheet and winds it onto the forming tube. The forming tube is arranged on the top of the movable platform, and the movable platform controls the rotation of the forming tube. The plastic extruder winds the extruded sheet onto the forming tube through a controllable positioning device. The setting length of the rail is greater than 2.2 times the length of the forming tube. The setting position of the controllable positioning device and the reinforcing rib feeding device is at the midpoint of the rail.

[0053] The controllable positioning device 200 includes: an upper positioning frame 201, a lower positioning frame 202 and two roller devices. The upper positioning frame and the lower positioning frame have the same size and are matched with the sheet size. A guide rail and a slider 203 are arranged between the upper positioning frame 201 and the lower positioning frame 202 to enable the upper positioning frame and the lower positioning frame to slide relative to each other. The direction of the guide rail is parallel to the axis of the forming tube. A driving device is arranged between the upper positioning frame and the lower positioning frame, and the driving device drives the upper positioning frame and the lower positioning frame to slide relative to each other.

[0054] The output direction line of the controllable positioning device is perpendicular to the movable direction line of the rail;

[0055] The circumference of the forming tube is used for positioning, and a controlled pressing cylinder is arranged on the same circumference as the controllable positioning device. The controlled pressing cylinder is fixedly connected to the frame where the controllable positioning device is located, and the controlled pressing cylinder is used to press the sheet;

[0056] like Figure 5 As shown, a reinforcing rib feeding device is arranged on the outer side of the rail opposite to the controllable positioning device, and the reinforcing rib feeding device is used to wind the reinforcing rib onto the forming tube.

[0057] like Figure 6 The drive shown uses a pneumatic telescopic rod;

[0058] One of the upper positioning frame or the lower positioning frame is fixed to the frame, the fixed frame is called the inner ring sheet frame, and the relatively movable frame is called the outer ring sheet frame; the axis of the movable end of the pneumatic telescopic rod is parallel to the guide rail, the pump body is fixed on the frame, the movable end is fixed to the outer ring sheet frame, and the pneumatic telescopic rod drives the outer ring sheet frame to slide relative to the inner ring sheet frame.

[0059] exist Figure 1 In the embodiment, the inner ring sheet material frame is the upper positioning frame, and the outer ring sheet material frame is the lower positioning frame. Figure 1 The polar coordinates are established with the axis of the forming tube, the setting position of the controllable positioning device is at -45°, and the setting position of the controlled pressing cylinder is at -55°.

[0060] like Figure 7 As shown, the two roller devices are respectively an upper positioning frame and a lower positioning frame for conveying sheets extruded by two plastic extruders;

[0061] The width of the rolling rod 401 of the rolling rod device 400 is greater than the maximum movable spacing formed between the upper positioning frame and the lower positioning frame;

[0062] The extended lines of the axes of the two roller rod devices form an angle of 20°, and the roller rod devices of the lower and upper positioning frames are horizontal.

[0063] There are two controlled pressure cylinders 300, which are mirror-imaged;

[0064] like Figure 8 The single controlled pressing cylinder shown comprises: a segmented cylinder 301, a cylinder support 302, a pressing cylinder positioning frame 304, and an electromagnetic telescopic rod; wherein 305 in the figure is an electromagnet device of the electromagnetic telescopic rod.

[0065] The cylinder support is L-shaped, with the long side inserted into the cylinder positioning frame and the short side inserted into the segmented cylinder shaft;

[0066] The segmented cylinder includes two segments with different diameters;

[0067] A return spring 303 is provided between the cylinder positioning frame and the cylinder support for pressing the segmented cylinder onto the surface of the forming tube;

[0068] The cylinder support penetrates the cylinder positioning frame, and an electromagnetic telescopic rod is arranged at the tail of the cylinder positioning frame. The telescopic end of the electromagnetic telescopic rod is fixed to the cylinder support, and the electromagnetic telescopic rod drives the cylinder support to lift the segmented cylinder. The coaxial electromagnetic telescopic rod can control the cylinder support to lift the cylinder.

[0069] The rib feeding device includes:

[0070] like Fig. 9 The positioning roller assembly 500 shown includes two rollers 510 arranged at an angle of 60° along the line where the rotating shafts are located. The rollers are fixed to an external frame, and the triangular space formed by the rollers is used to position the reinforcing ribs;

[0071] Hot air cylinder 502, which is arranged just above the positioning roller group and whose air outlet is vertically downward to heat the reinforcing ribs;

[0072] The reinforcing rib pressing cylinder 501 is arranged on the circumference of the positioning roller group, and the body of the reinforcing rib pressing cylinder matches the reinforcing rib.

[0073] like Fig.10 The reinforcement production shown includes: three plastic extruders and three vacuum setting boxes;

[0074] The die of the first plastic extruder 101 includes a plurality of hollow holes arranged along the vertical line of the reinforcing rib, the extrusion product of the first plastic extruder (the reinforcing rib core body 7, which contains heat dissipation holes 8 when integrally formed through the die) is sent to the second plastic extruder through the first vacuum shaping box 102, the extrusion product of the second plastic extruder (the reinforcing rib middle layer 6, which contains the co-extruded reinforcing rib core body 7) is sent to the third plastic extruder through the second vacuum shaping box, and the extrusion product of the third plastic extruder (the reinforcing rib outer shell 5, which contains the co-extruded reinforcing rib middle layer 6 and the reinforcing rib core body 7) is shaped in the third vacuum shaping box and then wound onto the forming tube through the reinforcing rib feeding device;

[0075] The second plastic extruder and the third plastic extruder are both co-extrusion compound type plastic extruders;

[0076] The dies of the first plastic extruder, the second plastic extruder and the third plastic extruder are all equilateral triangles. Example

[0077] The difference between this embodiment and embodiment 1 is that the driving device uses a different solution. In this embodiment, the driving device uses an electric guide rail, and the electric guide rail is installed parallel to the guide rail; one of the frame bodies of the upper positioning frame or the lower positioning frame is fixed to the frame. Example

[0078] This embodiment has the same substrate as that of embodiment 1, and the difference lies in the location of the controllable positioning device and the controlled pressure cylinder. Figure 4 As shown, polar coordinates are established with the axis of the forming tube, the setting position of the controllable positioning device is at 45°, and the setting position of the controlled pressing cylinder is at 55°.

[0079] 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. A pressure-enhanced winding structure wall tube forming device, comprising: Rails, a mobile platform, a forming tube, several plastic extruders, and several vacuum forming boxes. The mobile platform is arranged on the rails and moves forward and backward along the rails. The plastic extruder extrude the plastic sheet and winds it onto the forming tube. The forming tube is arranged on the top of the mobile platform, and the mobile platform controls the rotation of the forming tube. The invention is characterized in that the plastic extruder winds the extruded sheet onto the forming tube through a controllable positioning device; The controllable positioning device comprises: an upper positioning frame, a lower positioning frame and two roller devices. The upper positioning frame and the lower positioning frame have the same size and are matched with the sheet size. A guide rail and a slider are arranged between the upper positioning frame and the lower positioning frame to enable the upper positioning frame and the lower positioning frame to slide relative to each other. The direction of the guide rail is parallel to the axis of the forming tube. A driving device is arranged between the upper positioning frame and the lower positioning frame, and the driving device drives the upper positioning frame and the lower positioning frame to slide relative to each other. The output direction line of the controllable positioning device is perpendicular to the movable direction line of the rail; The circumference of the forming tube is used for positioning, and a controlled pressing cylinder is arranged on the same circumference as the controllable positioning device. The controlled pressing cylinder is fixedly connected to the frame where the controllable positioning device is located, and the controlled pressing cylinder is used to press the sheet; A reinforcing rib feeding device is arranged on the outer side of the rail opposite to the controllable positioning device, and the reinforcing rib feeding device is used to wind the reinforcing rib onto the forming tube.

2. The device for forming a pressure-reinforced winding structure wall tube according to claim 1, characterized in that: The driving device uses an electric guide rail, which is installed parallel to the guide rail; One of the frame bodies of the upper positioning frame or the lower positioning frame is fixed to the rack.

3. The device for forming a pressure-reinforced winding structure wall tube according to claim 1, characterized in that: The driving device uses a pneumatic telescopic rod; One of the upper positioning frame or the lower positioning frame is fixed to the frame, the fixed frame is called the inner ring sheet frame, and the relatively movable frame is called the outer ring sheet frame; The axis of the movable end of the pneumatic telescopic rod is parallel to the guide rail, the pump body is fixed on the frame, the movable end is fixed to the outer ring sheet frame, and the pneumatic telescopic rod drives the outer ring sheet frame to slide relative to the inner ring sheet frame.

4. A pressure-reinforced winding structure wall tube forming equipment according to claim 2 or 3, characterized in that: The roller devices are respectively used for the upper positioning frame and the lower positioning frame to convey the sheets extruded by the two plastic extruders; The width of the rolling rod of the rolling rod device is greater than the maximum movable spacing formed between the upper positioning frame and the lower positioning frame; The extended lines of the axes of the two rolling rod devices form an angle, and the angle is between 10° and 30°.

5. The device for forming a pressure-reinforced winding structure wall tube according to claim 2 or 3, characterized in that: There are two controlled pressure cylinders, set in mirror image; A single controlled pressing cylinder includes: a segmented cylinder, a cylinder support, a pressing cylinder positioning frame, and an electromagnetic telescopic rod; The cylinder support is L-shaped, with the long side inserted into the cylinder positioning frame and the short side inserted into the segmented cylinder shaft; The segmented cylinder includes two segments with different diameters; A return spring is arranged between the cylinder positioning frame and the cylinder support for pressing the segmented cylinder onto the surface of the forming tube; The cylinder support penetrates the cylinder pressing positioning frame, and an electromagnetic telescopic rod is arranged at the tail of the cylinder pressing positioning frame. The telescopic end of the electromagnetic telescopic rod is fixed to the cylinder support, and the electromagnetic telescopic rod drives the cylinder support to lift the segmented cylinder.

6. The device for forming a pressure-reinforced winding structure wall tube according to claim 1, characterized in that: The rib feeding device includes: The positioning roller group includes two rollers whose rotation axis are arranged at an angle of 60°. The rollers are fixed on the external frame. The triangular space formed by the rollers is used to position the reinforcing ribs. A hot air cylinder is arranged directly above the positioning roller group and the air outlet heats the reinforcing ribs vertically downward; The reinforcing rib pressing cylinder is arranged on the circumference of the positioning roller group, and the body of the reinforcing rib pressing cylinder matches the reinforcing rib.

7. The pressure-reinforced winding structure wall tube forming equipment according to claim 1 or 6, characterized in that: The rib production includes: three plastic extruders and three vacuum shaping boxes; The die of the first plastic extruder includes a plurality of hollow holes arranged along the vertical line of the reinforcing rib, the extrudate of the first plastic extruder is fed into the second plastic extruder through the first vacuum shaping box, the extrudate of the second plastic extruder is fed into the third plastic extruder through the second vacuum shaping box, and the extrudate of the third plastic extruder is shaped in the third vacuum shaping box and then wound onto the forming tube through the reinforcing rib feeding device; The second plastic extruder and the third plastic extruder are both co-extrusion compound type plastic extruders; The dies of the first plastic extruder, the second plastic extruder and the third plastic extruder are all equilateral triangles.

8. The device for forming a pressure-reinforced winding structure wall tube according to claim 1, characterized in that: The setting length of the rail is greater than 2.2 times the length of the forming tube; the setting position of the controllable positioning device and the reinforcing rib feeding device is at the midpoint of the rail.

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