A pipe winding die

Abstract

The present invention discloses a pipe bending die, comprising a support body, a central axis adjustment device, and a pipe bending fixture. The support body comprises a support base and a support cover. The central axis adjustment device comprises a central axis body, a guide rail body, and an angle slide bar. One end of the angle slide bar is connected to a hinge seat, and the other end of the angle slide bar is hinged to the central axis body. One end of the central axis body is hinged to a guide rail clamping block, which is connected to the guide rail slider. The pipe bending fixture comprises two first-direction drive sliders and second-direction drive sliders. One side of the first-direction drive slider is provided with a first rack, which meshes with an external gear. One side of the second-direction drive slider is provided with a second rack, which meshes with an internal gear. The first-direction drive slider and the second-direction drive slider are connected to a drive assembly. Both the first-direction drive slider and the second-direction drive slider are connected to the pipe bending fixture via a transmission assembly. The present invention can assist in fiber winding of pipe bending.

Description

Technical Field

[0001] The present invention relates to the technical field of elbow winding equipment, in particular to an elbow winding mould. Background Art

[0002] Compared to traditional plastic and metal elbows, carbon fiber composite elbows offer advantages such as high modulus, high strength, excellent corrosion resistance, and long life. They are widely used in aerospace, marine development, oil extraction and smelting, building water supply and drainage, chemical industry, and food processing. Filament winding technology is an advanced manufacturing technique that uses winding equipment to control the relative movement between the nozzle and the core mold, evenly and stably wrapping a resin-impregnated fiber ribbon around the core mold surface according to a specific pattern. The yarn is then cured and molded to achieve the required mechanical properties. Compared with other composite molding processes, elbows produced using filament winding technology offer advantages such as high efficiency, low cost, and high product strength, making it an ideal method for producing elbows and their joints.

[0003] Currently, composite pipe bends are typically formed using layup, winding, or hand lay-up methods. Specifically, prepreg composite materials are laid or wound onto the outer surface of a mold in a specific layer sequence. Because pipe bends are not rotating parts, they cannot be directly fixed to the winding machine using a shaft.

[0004] Therefore, there is an urgent need in the art for a bend pipe winding die to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a bent pipe winding die to solve the problems existing in the above-mentioned prior art and to enable the fiber winding work of the bent pipe on the winding machine.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] The present invention discloses a pipe bending die, comprising a winding die body, wherein the winding die body comprises a supporting body, a central axis adjusting device and a pipe bending fixing device, wherein the central axis adjusting device and the pipe bending fixing device are respectively installed on both sides of the supporting body;

[0008] The support body includes a support base and a support cover, and the support cover is fixed to one side of the support base;

[0009] The central axis adjustment device includes a central axis body, a guide rail body and an angle slide rod, the guide rail body is fixed to the support cover plate, one end of the guide rail body is fixed with a hinge seat, the other end of the guide rail body is slidably connected to a guide rail slider, one end of the angle slide rod is connected to the hinge seat, the other end of the angle slide rod is hinged to the central axis body, one end of the central axis body is hinged with a guide rail clamping block, and the guide rail clamping block is connected to the guide rail slider;

[0010] The bent pipe fixing device includes two first-direction drive sliders, two second-direction drive sliders, an outer gear and an inner gear, the two first-direction drive sliders are arranged opposite to each other, and the two second-direction drive sliders are arranged opposite to each other. The two first-direction drive sliders are provided with a first rack on the side close to the support cover plate, the first rack is meshed with the outer gear, and the two second-direction drive sliders are provided with a second rack on the side away from the support cover plate, the second rack is meshed with the inner gear, the first-direction drive slider and the second-direction drive slider are connected to a drive assembly, and the drive device is used to drive the first-direction drive slider and the second-direction drive slider to move back and forth in a straight line, and the first-direction drive slider and the second-direction drive slider are both connected to a bent pipe clamping block through a transmission assembly, and the four bent pipe clamping blocks are used to clamp one end of the bent pipe body.

[0011] Preferably, the support base is a cylindrical structure, and the support cover is fixed to one end of the support base by screws.

[0012] Preferably, a sliding groove is provided in the angle slide bar, two hinge seats are provided, each hinge seat is provided with a hinge hole, and the sliding groove is located between the two hinge holes;

[0013] It also includes an angle adjustment bolt and an angle adjustment nut. The angle adjustment bolt passes through the hinge hole and the slide groove in sequence and is threadedly connected to the angle adjustment nut.

[0014] Preferably, the central shaft body is provided with a plurality of positioning holes, and angle adjustment slip rings are installed at the positioning holes through positioning screws, and the end of the angle slide rod away from the hinge seat is hinged to the angle adjustment slip ring through an angle adjustment pin.

[0015] Preferably, the guide rail clamping block and the guide rail slider are fixedly connected by position fixing screws.

[0016] Preferably, the drive assembly includes two screws and two sliding rods, the two screws are respectively threadedly connected to one first direction drive slider and one second direction drive slider, and the two sliding rods are respectively slidingly connected to another first direction drive slider and another second direction drive slider.

[0017] Preferably, a manual adjustment block is provided at one end of the screw rod, a manual adjustment through hole is provided on the side wall of the support base, and the manual adjustment block passes through the manual adjustment through hole.

[0018] Preferably, the transmission assembly includes a passive slider, a side of the passive slider close to the support cover is provided with an oblique protrusion, and a side of the first direction driving slider and the second direction driving slider away from the support cover is provided with an oblique groove, and the oblique protrusion is slidably connected to the oblique groove;

[0019] Four limiting sliding grooves are provided on the side walls of the support base, and the passive sliding blocks are slidably connected to the limiting sliding grooves.

[0020] Preferably, a mounting groove is provided on a side of the passive sliding block away from the oblique protrusion, a clamping connection block is fixed in the mounting groove, and the clamping connection block is fixedly connected to the elbow clamping block.

[0021] Preferably, the cross-sectional shape of the elbow body is circular or elliptical.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] The present invention utilizes two sets of first-direction drive sliders and two sets of second-direction drive sliders to drive the movement of four pipe-bending clamping blocks. This makes it suitable not only for common circular-cross-section pipe bends, but also for elliptical cross-section pipe bends. Screws can be adjusted to meet clamping requirements for different cross-sectional sizes. The central axis adjustment device is designed specifically for the angle of the pipe bend. The deflection angle between the central axis and the pipe body can be adjusted to accommodate pipes of varying angles and sizes. Changing the relative position between the central axis and the pipe body reduces impact and centrifugal force during winding, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1This is a schematic structural diagram of a pipe bending winding die according to an embodiment of the present invention;

[0026] Figure 2 This is a partial schematic diagram of the elbow winding mold after removing the support cover plate in an embodiment of the present invention;

[0027] Figure 3 This is a partial schematic diagram of the elbow winding mold after removing the support base in an embodiment of the present invention;

[0028] In the figure: 1-bend pipe body; 2-support base; 3-support cover; 4-bend pipe clamping block; 5-guide rail body; 6-angle adjustment bolt; 7-angle slide rod; 8-angle adjustment nut; 9-angle adjustment pin; 10-angle adjustment slip ring; 11-center shaft body; 12-center shaft pin; 13-position fixing screw; 14-guide rail clamping block; 15-clamping connecting block; 16-guide rail slider; 17-external gear; 18-internal gear; 19-screw; 20-manual adjustment block; 21-first direction drive slider; 22-second direction drive slider; 23-slide rod; 24-passive slider. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a bent pipe winding die to solve the problems existing in the above-mentioned prior art and to enable the fiber winding work of the bent pipe on the winding machine.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] like Figure 1-Figure 3 As shown, this embodiment provides a pipe bending die, including a winding die body. The winding die body is provided with two sets, and the two sets of winding die bodies are respectively installed at both ends of the pipe bending body 1. Each winding die body includes a support body, a central axis adjustment device and a pipe bending fixing device, and the central axis adjustment device and the pipe bending fixing device are respectively installed on both sides of the support body.

[0033] The supporting body includes a supporting base 2 and a supporting cover 3 , and the supporting cover 3 is fixed to one side of the supporting base 2 .

[0034] For the central axis adjustment device, Figure 1As shown, the central axis adjustment device includes a central axis body 11, a guide rail body 5 and an angle slide 7. The guide rail body 5 is fixed to the support cover 3 by screws, one end of the guide rail body 5 is fixed with a hinge seat, and the other end of the guide rail body 5 is slidably connected to a guide rail slider 16, and the guide rail slider 16 can slide back and forth linearly on the guide rail body 5. One end of the angle slide 7 is connected to the hinge seat, and the other end of the angle slide 7 is hinged to the central axis body 11. One end of the central axis body 11 is hinged to a guide rail clamping block 14 through a central axis pin 12, and the guide rail clamping block 14 is connected to the guide rail slider 16. The other end of the central axis body 11 is connected to the winding machine (it can also be understood that the central axis body 11 itself is part of the winding machine).

[0035] like Figure 2-Figure 3 As shown, the elbow fixing device includes two first-direction drive sliders 21, two second-direction drive sliders 22, an external gear 17, and an internal gear 18. The two first-direction drive sliders 21 are positioned opposite each other, and the two second-direction drive sliders 22 are positioned opposite each other. The two first-direction drive sliders 21 and the two second-direction drive sliders 22 are respectively distributed according to the positions of the four sides of a square. The two first-direction drive sliders 21 are provided with a first rack on the side close to the support cover plate 3, and the two first racks respectively mesh with the two sides of the external gear 17. Similarly, the two second-direction drive sliders 22 are provided with a second rack on the side away from the support cover plate 3, and the two second racks mesh with the two sides of the internal gear 18. It should be noted that the external gear 17 is closer to the support cover plate 3 than the internal gear 18, and the external gear 17 and the internal gear 18 are relatively independent, so their rotation does not affect each other. To further achieve this, a thrust ball bearing can be provided between the two to achieve a connection between them. The first and second directional drive sliders 21, 22 are connected to a drive assembly that drives the first and second directional drive sliders 21, 22 to perform reciprocating linear motion. Each of the first and second directional drive sliders 21, 22 is connected to a pipe elbow clamping block 4 via a transmission assembly. When the first and second directional drive sliders 21, 22 perform linear motion, they drive the corresponding pipe elbow clamping block 4 to move, so that the four pipe elbow clamping blocks 4 are used to clamp one end of the pipe elbow body 1.

[0036] In actual use, the winding mold body is first installed on the winding machine. Since the central axis body 11 is generally an integral part of the winding machine, the winding mold body generally does not need to be removed from the winding machine. Then, the bend tube body 1 to be wound with fibers is taken and placed between the two winding mold bodies. The drive assembly is then activated, which drives the first-direction drive slider 21 and the second-direction drive slider 22 to move accordingly, thereby driving the four bend tube clamping blocks 4 to move accordingly, thereby clamping the two ends of the bend tube body 1. After clamping the bend tube body 1, the operator can adjust the position of the guide rail slider 16 on the guide rail body 5, that is, adjust the relative position of the central axis body 11 and the bend tube body 1, thereby reducing the impact and centrifugal force during winding, thereby improving product quality. By adjusting the angle slider 7, the angle between the central axis body 11 and the guide rail body 5 can be changed to accommodate bend tube bodies 1 of different angles. Once the position and angle are adjusted, the winding machine can be turned on to start fiber winding.

[0037] In this embodiment, the support base 2 is a cylindrical structure with one end sealed and the other end open. The support cover 3 is fixed to the open end of the support base 2 by screws. The sealed end of the support base 2 also has four through-holes for the elbow clamping block 4 to pass through.

[0038] In this embodiment, a long strip-shaped slide groove is provided in the angle slide bar 7, two hinge seats are provided, and there is a gap between the two hinge seats. Each hinge seat is provided with a hinge hole, and the slide groove on the angle slide bar 7 is located between the two hinge holes.

[0039] In order to realize the connection between the hinge seat and the angle slide rod 7, an angle adjustment bolt 6 and an angle adjustment nut 8 are also included. The angle adjustment bolt 6 passes through the hinge hole and the slide groove in sequence and is threadedly connected to the angle adjustment nut 8.

[0040] When it is necessary to adjust the angle between the central shaft body 11 and the guide rail body 5, the angle adjustment nut 8 can be loosened first to put the angle slide bar 7 in a relatively movable state, and then the angle between the central shaft body 11 and the guide rail body 5 can be adjusted. In the process of adjusting the angle between the central shaft body 11 and the guide rail body 5, the inclination angle of the angle slide bar 7 and the relative position of the slide groove and the hinge seat will change accordingly, but the slide groove will still be between the two hinge holes. When the angle between the central shaft body 11 and the guide rail body 5 is adjusted to the expected position, the angle adjustment nut 8 can be tightened again to fix the angle slide bar 7, and further fix the angle between the central shaft body 11 and the guide rail body 5.

[0041] In this embodiment, the central shaft body 11 is provided with several positioning holes, specifically two. Of course, those skilled in the art can adjust the number and distribution of the positioning holes according to actual needs. An angle adjustment slip ring 10 is mounted at the positioning holes via positioning screws. Specifically, the angle adjustment slip ring 10 is sleeved onto the outside of the central shaft body 11, and then the positioning screws are sequentially passed through the angle adjustment slip ring 10 and the positioning holes. The end of the angle slide 7 away from the hinge seat is hinged to the angle adjustment slip ring 10 via the angle adjustment pin 9, thereby adjusting the angle between the central shaft body 11 and the guide rail body 5.

[0042] In this embodiment, the guide rail clamping block 14 and the guide rail slider 16 are fixedly connected by position fixing screws 13. The reason for using position fixing screws 13 to fix the guide rail clamping block 14 and the guide rail slider 16 is to enable the guide rail clamping block 14 and the guide rail slider 16 to be fixed at a certain position on the guide rail body 5 to prevent them from sliding. Figure 1 It is not difficult to see that a protrusion extends inward from both sides of the opening on the guide rail body 5. The guide rail slider 16 is an inverted T-shaped block, with a portion extending from between the two protrusions and fixedly connected to the guide rail clamping block 14. When the guide rail clamping block 14 and the guide rail slider 16 need to slide on the guide rail body 5, it is only necessary to loosen the position fixing screw 13. When the guide rail clamping block 14 and the guide rail slider 16 need to be kept stationary at a certain position on the guide rail body 5, it is only necessary to tighten the position fixing screw 13. At this time, the guide rail clamping block 14 and the guide rail slider 16 can jointly clamp the protrusions on both sides. Under the action of the large friction force, the guide rail clamping block 14 and the guide rail slider 16 can prevent linear movement along the guide rail body 5.

[0043] In this embodiment, the drive assembly includes two screws 19 and two slide rods 23. The outer walls of the screws 19 are provided with external threads, and the slide rods 23 are polished rods. The two screws 19 are threadedly connected to a first-direction drive slider 21 and a second-direction drive slider 22, respectively. The two slide rods 23 are slidably connected to another first-direction drive slider 21 and another second-direction drive slider 22, respectively. The screws 19 and slide rods 23 corresponding to the first-direction drive slider 21 are arranged parallel to each other, while the screws 19 and slide rods 23 corresponding to the second-direction drive slider 22 are arranged parallel to each other, and the screws 19 in the first-direction drive slider 21 and the second-direction drive slider 22 are perpendicular to each other.

[0044] When the screw 19 connected to the first directional drive slider 21 rotates, the screw 19 and the first directional drive slider 21 are threaded together, preventing the first directional drive slider 21 from rotating. The two form a common screw-nut assembly, causing the first directional drive slider 21, connected to the screw 19, to move linearly along the axis of the screw 19. Because the first directional drive slider 21 meshes with the external gear 17 via the first rack, the external gear 17 rotates with it as the first directional drive slider 21 moves linearly. The other side of the external gear 17 meshes with the other first directional drive slider 21 via the first rack. This second first directional drive slider 21, constrained by the slide bar 23 and driven by the external gear 17, also moves linearly along the axial direction of the slide bar 23.

[0045] Similarly, when the screw 19 connected to the second directional drive slider 22 rotates, the screw 19 and the second directional drive slider 22 are threaded together, preventing the second directional drive slider 22 from rotating. The two form a common screw-nut pairing, allowing the second directional drive slider 22, connected to the screw 19, to move linearly along the axis of the screw 19. Because the second directional drive slider 22 meshes with the internal gear 18 via the second rack, the internal gear 18 rotates with it as the second directional drive slider 22 moves linearly. The other side of the internal gear 18 meshes with the other second directional drive slider 22 via the second rack. This second directional drive slider 22, driven by the positioning of the slide bar 23 and the internal gear 18, also moves linearly along the axial direction of the slide bar 23.

[0046] In this embodiment, a manual adjustment block 20 is provided at one end of the screw 19, and a manual adjustment through hole is provided on the side wall of the support base 2. The manual adjustment block 20 passes through the manual adjustment through hole. The staff can rotate the manual adjustment block 20 manually or using other tools to realize the rotation of the screw 19.

[0047] During normal use, the staff first rotates the manual adjustment block 20 of the screw 19 in the first direction driving slider 21, so that one set of opposite elbow clamping blocks 4 clamps the two sides of the elbow body 1, and then rotates the manual adjustment block 20 of the screw 19 in the second direction driving slider 22 to clamp the remaining two sides, thereby completing the technical effect of clamping the four sides of the elbow body 1.

[0048] In this embodiment, if Figure 3 As shown, the transmission assembly includes a passive slider 24, which is close to one side of the support cover (i.e. Figure 3 The upper end of the first direction driving slider 21 and the second direction driving slider 22 are away from the side of the support cover (i.e. Figure 3 An oblique groove is provided at the lower end of the housing, and the oblique protrusion is slidably connected to the corresponding oblique groove.

[0049] In addition, combined Figure 2 and Figure 3 As shown, the sidewalls of the support base 2 are provided with four limiting grooves, the cross-sectional shape of which is identical to that of the passive slider 24. The passive slider 24 is slidably connected to the limiting grooves and can only perform reciprocating linear movement along the limiting grooves. Furthermore, the passive slider 24 moves in a direction perpendicular to the movement of the corresponding first-direction drive slider 21 or second-direction drive slider 22. Therefore, when the first-direction drive slider 21 or second-direction drive slider 22 moves, the interaction between the oblique grooves and oblique protrusions, as well as the restraining action of the limiting grooves, causes the passive slider 24 to move linearly in a direction perpendicular to the corresponding first-direction drive slider 21 or second-direction drive slider 22, under the driving force provided by the corresponding first-direction drive slider 21 or second-direction drive slider 22.

[0050] In this embodiment, a mounting slot is provided on the side of the passive slider 24 away from the oblique protrusion. A clamping block 15 is fixed in the mounting slot. The clamping block 15 is screwed to the elbow clamping block 4. Furthermore, the clamping block 15 and the elbow clamping block 4 are screwed to the mounting slot, so that the passive slider 24, the clamping block 15, and the elbow clamping block 4 are fixed together and move synchronously. Therefore, when the passive slider 24 moves, it drives the corresponding elbow clamping block 4 to move synchronously.

[0051] In this embodiment, due to the bidirectional clamping control method of four elbow clamping blocks 4, the cross-sectional shape of the elbow body 1 fixed by the elbow fixing device can be circular or elliptical, and can also be used to clamp elbow bodies 1 with different cross-sectional sizes.

[0052] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A pipe bending winding die, characterized by: The winding mold body includes a supporting body, a central axis adjusting device and a bend fixing device, wherein the central axis adjusting device and the bend fixing device are respectively installed on both sides of the supporting body; The support body includes a support base and a support cover, and the support cover is fixed to one side of the support base; The central axis adjustment device includes a central axis body, a guide rail body and an angle slide rod, the guide rail body is fixed to the support cover plate, one end of the guide rail body is fixed with a hinge seat, the other end of the guide rail body is slidably connected to a guide rail slider, one end of the angle slide rod is connected to the hinge seat, the other end of the angle slide rod is hinged to the central axis body, one end of the central axis body is hinged with a guide rail clamping block, and the guide rail clamping block is connected to the guide rail slider; The bent pipe fixing device includes two first-direction drive sliders, two second-direction drive sliders, an outer gear and an inner gear, the two first-direction drive sliders are arranged opposite to each other, and the two second-direction drive sliders are arranged opposite to each other. The two first-direction drive sliders are provided with a first rack on the side close to the support cover plate, the first rack is meshed with the outer gear, and the two second-direction drive sliders are provided with a second rack on the side away from the support cover plate, the second rack is meshed with the inner gear, the first-direction drive slider and the second-direction drive slider are connected to a drive assembly, and the drive device is used to drive the first-direction drive slider and the second-direction drive slider to move back and forth in a straight line, and the first-direction drive slider and the second-direction drive slider are both connected to a bent pipe clamping block through a transmission assembly, and the four bent pipe clamping blocks are used to clamp one end of the bent pipe body.

2. The pipe bending winding die according to claim 1, characterized in that: The support base is a cylindrical structure, and the support cover is fixed to one end of the support base by screws.

3. The pipe bending winding die according to claim 1, characterized in that: A sliding groove is provided in the angle slide bar, and two hinge seats are provided. Each hinge seat is provided with a hinge hole, and the sliding groove is located between the two hinge holes. It also includes an angle adjustment bolt and an angle adjustment nut. The angle adjustment bolt passes through the hinge hole and the slide groove in sequence and is threadedly connected to the angle adjustment nut.

4. The elbow winding mold according to claim 1, characterized in that: The central shaft body is provided with a plurality of positioning holes, and angle adjustment slip rings are installed at the positioning holes through positioning screws. One end of the angle slide rod away from the hinge seat is hinged to the angle adjustment slip ring through an angle adjustment pin.

5. The pipe bending winding die according to claim 1, characterized in that: The guide rail clamping block and the guide rail sliding block are fixedly connected via position fixing screws.

6. The pipe bending winding die according to claim 1, characterized in that: The driving assembly includes two screws and two sliding rods. The two screws are respectively threadedly connected to one first direction driving slider and one second direction driving slider, and the two sliding rods are respectively slidingly connected to another first direction driving slider and another second direction driving slider.

7. The elbow winding die according to claim 6, characterized in that: A manual adjustment block is provided at one end of the screw rod, a manual adjustment through hole is provided on the side wall of the support base, and the manual adjustment block passes through the manual adjustment through hole.

8. The elbow winding die according to claim 1, characterized in that: The transmission assembly includes a passive slider, wherein a side of the passive slider close to the support cover is provided with an oblique protrusion, and a side of the first direction driving slider and the second direction driving slider away from the support cover is provided with an oblique groove, and the oblique protrusion is slidably connected to the oblique groove; Four limiting sliding grooves are provided on the side walls of the support base, and the passive sliding blocks are slidably connected to the limiting sliding grooves.

9. The elbow winding die according to claim 8, characterized in that: A mounting groove is provided on a side of the passive sliding block away from the oblique protrusion, a clamping connection block is fixed in the mounting groove, and the clamping connection block is fixedly connected to the elbow clamping block.

10. The elbow winding die according to claim 1, characterized in that: The cross-sectional shape of the elbow body is circular or elliptical.

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