Flexible pipe clamping tool and automatic nylon pipe forming and bending machine

Abstract

The utility model provides a flexible pipe material clamping tool and a nylon pipe automatic forming pipe bender, the flexible pipe material clamping tool comprises an air bag ring, a supporting piece and an air pipe, the air bag ring is provided with a clamping part used for limiting a pipe material and a limiting part arranged opposite to the clamping part inside and outside; the supporting piece is used for forming limiting fit with the limiting part; the air pipe communicates with the inner cavity of the air bag ring, penetrates through the side wall of the supporting piece and is used for inflating the inner cavity of the air bag ring so that the air bag ring can abut against the pipe under the limiting effect of the supporting piece. According to the flexible clamping tool for the pipe material, the inner cavity of the air bag ring is inflated through the air pipe, and the air bag ring expands towards the clamping part under the limiting action of the supporting piece on the limiting part of the air bag ring, so that the clamping part abuts against the pipe material, flexible clamping of the pipe material is achieved, stress on the pipe material is uniform, clamping damage to the pipe material is avoided, and the working efficiency of the pipe material is improved. The forming quality of the pipe is ensured, and meanwhile the requirement for the surface roughness of the pipe is lowered.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe processing, and in particular relates to a flexible pipe clamping tool and a nylon pipe automatic forming bending machine. Background Art

[0002] Tube and rod materials involve clamping and fixing operations during handling, transportation, bending, processing, and assembly. The existing clamping solutions mainly include rigid clamping such as clamping with claws or pliers, and vacuum suction cup fixing. Traditional rigid clamping methods mainly rely on mechanical pressure to achieve effective fixation of metal materials, but are prone to indentation, scratches, and other damage to plastic tube and rod materials under high temperature conditions, which not only affects the appearance quality of the product, but may also reduce its mechanical properties, thereby affecting the service life of the final product. The clamping method of the vacuum suction cup is to use a vacuum pump to extract the air inside the suction cup to form a negative pressure, so that the suction cup is tightly attached to the surface of the workpiece to fix the workpiece. However, this method can generally only clamp and fix one side of the tube and rod material, and has high requirements for the sealing between the suction cup and the surface of the tube and rod material. It is not suitable for tube and rod processing scenarios where concentricity needs to be guaranteed. Utility Model Content

[0003] The embodiment of the utility model provides a flexible clamping tool for pipe materials, which can realize flexible clamping of pipe materials, make the pipe materials evenly stressed, avoid clamping damage to the pipe materials, and ensure the molding quality of the pipe materials.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: first, a flexible clamping tool for pipe materials is provided, including an airbag ring, a support member and an air tube, the airbag ring has a clamping part that can hug the outer periphery of the pipe material or press against the inner wall of the pipe material to limit the pipe material, and a limiting part arranged opposite to the inner and outer sides of the clamping part; the support member is sleeved on the outer periphery of the airbag ring or supported on the inner periphery of the airbag ring, and the support member is used to form a limiting fit with the limiting part; the air tube is connected to the inner cavity of the airbag ring and is arranged to pass through the side wall of the support member, and the air tube is used to inflate the inner cavity of the airbag ring so that the airbag ring is pressed against the pipe material under the limiting action of the support member.

[0005] As another embodiment of the present invention, the airbag ring is a cylindrical ring-shaped component, the clamping part is the inner peripheral wall of the airbag ring, which is used to clamp the outer periphery of the tube material, the limiting part is the outer peripheral wall and two side walls of the airbag ring, and the support member is a cylindrical airbag cover arranged on the outside of the airbag ring. The cylindrical airbag cover is provided with a first through hole coaxially arranged with the airbag ring for the tube material to pass through, and the air tube is connected to the outer peripheral wall of the airbag ring and is arranged to pass through the peripheral wall of the cylindrical airbag cover.

[0006] As another embodiment of the present invention, the cylindrical airbag cover includes a cylindrical body with an opening at one end and a cover for sealing the opening of the cylindrical body. The first through hole is arranged through the cylindrical body and the cover. The airbag ring is located in the cylindrical body. The peripheral wall of the cylindrical body is provided with a first avoidance groove through which the air supply pipe passes and extends along the axial direction of the cylindrical body. The first avoidance groove is connected to the opening of the cylindrical body.

[0007] As another embodiment of the present invention, the airbag ring is a rectangular component, the clamping part is the inner wall of the airbag ring, which is used to clamp the outer periphery of the tube material, the limiting part is the outer wall and the two end walls of the airbag ring, and the support member is a rectangular airbag cover arranged on the outside of the airbag ring. The rectangular airbag cover is provided with a second through hole coaxially arranged with the inner hole of the airbag ring for the tube material to pass through. The air tube is connected to the outer wall of the airbag ring and passes through the side wall of the rectangular airbag cover.

[0008] As another embodiment of the present invention, the rectangular airbag cover includes a rectangular cylinder with an opening on one side and a baffle for blocking the opening of the rectangular cylinder. The second through hole is arranged through the rectangular cylinder and the baffle. The airbag ring is located in the rectangular cylinder. The side wall of the rectangular cylinder is provided with a second avoidance groove through which the air supply pipe passes and extends along the axial direction of the airbag ring. The second avoidance groove is connected to the opening of the rectangular cylinder.

[0009] As another embodiment of the present invention, the airbag ring is a cylindrical ring-shaped component, the clamping part is the outer peripheral wall of the airbag ring, which is used to press outward on the inner peripheral wall of the tube material, the limiting part is the inner peripheral wall and two side walls of the airbag ring, the support member is a support tube, the airbag ring is sleeved on the outer periphery of the support tube, the air tube is connected to the inner peripheral wall of the airbag ring, and is arranged through the peripheral wall of the support tube.

[0010] As another embodiment of the present invention, a first limiting protrusion and a second limiting protrusion are provided on the outer peripheral wall of the support tube. The first limiting protrusion and the second limiting protrusion are arranged at intervals along the axial direction of the support tube, and the airbag ring is located between the first limiting protrusion and the second limiting protrusion.

[0011] As another embodiment of the present invention, the first limiting protrusion is located at the end of the support tube and is detachably connected to the support tube. The peripheral wall of the support tube is provided with an installation notch through which the air supply pipe passes and extends axially to the end of the support tube.

[0012] As another embodiment of the present invention, the trachea includes a connecting branch connected to the inner circumferential wall of the airbag ring and an extension tube connected to the connecting branch. The extension tube is used to be connected to an external air source. A positioning nut is provided on a threaded sleeve on the connecting branch. The positioning nut abuts against the inner circumferential wall of the support tube. An avoidance hole is provided on the circumferential wall of the support tube for the extension tube to pass through. The avoidance hole is used to guide the extension tube to extend to the outside of the pipe material.

[0013] The flexible pipe clamping tool provided by the present invention has the following beneficial effects: compared with the prior art, the flexible pipe clamping tool of the present invention inflates the inner cavity of the airbag ring through the trachea. Under the limiting action of the support member on the limiting portion of the airbag ring, the airbag ring expands in the direction of the clamping portion, thereby pressing the clamping portion against the pipe material to achieve the purpose of clamping the pipe material. Because the airbag ring itself is made of elastic material and has soft contact with the pipe material, it can achieve flexible clamping of the pipe material, and evenly applies force to the pipe material, without causing any damage to the pipe material, thereby ensuring the molding quality of the pipe material and reducing the requirements for the surface roughness of the pipe material. On the other hand, the expansion of the airbag ring makes the clamping portion fit tightly with the pipe material and can also form a sealing effect, making the flexible pipe clamping tool more suitable for use in application scenarios where pipe material heating and insulation are required, thereby increasing the scope of application of the tool.

[0014] In the second aspect, the embodiment of the utility model also provides a nylon tube automatic forming bending machine, including a head body and the aforementioned flexible clamping tooling for the tube material, wherein the head body is suitable for forming a support member, the airbag ring is located in the head body, and the air pipe is arranged to pass through the head body downward.

[0015] The beneficial effects of the nylon tube automatic forming and bending machine provided in this embodiment are the same as the beneficial effects of the aforementioned flexible pipe clamping tooling, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

[0017] Figure 1 A schematic structural diagram of a first embodiment of the flexible pipe clamping tool provided by the present utility model (pipe clamping state);

[0018] Figure 2 For the embodiment of the utility model Figure 1 Schematic diagram of the structure of the airbag ring;

[0019] Figure 3 For the embodiment of the utility model Figure 1 Schematic diagram of the cross-sectional structure;

[0020] Figure 4 A schematic structural diagram of a second embodiment of the flexible pipe clamping tool provided by the present utility model (pipe clamping state);

[0021] Figure 5 For the embodiment of the utility model Figure 4Schematic diagram of the structure of the airbag ring;

[0022] Figure 6 For the embodiment of the utility model Figure 4 Schematic diagram of the cross-sectional structure;

[0023] Figure 7 A schematic structural diagram of a third embodiment of the flexible pipe clamping tool provided by the present utility model (pipe clamping state);

[0024] Figure 8 For the embodiment of the utility model Figure 7 Schematic diagram of the cross-sectional structure;

[0025] Figure 9 A schematic structural diagram of the head body of the nylon tube automatic forming and bending machine provided by an embodiment of the present utility model (tube clamping state);

[0026] Figure 10 For the embodiment of the utility model Figure 9 Schematic diagram of the cross-sectional structure.

[0027] Among them, the reference numerals in the figures are:

[0028] 1. Airbag ring; 2. Air pipe; 21. Connecting branch pipe; 22. Extension pipe; 23. Positioning nut; 3. Cylindrical airbag cover; 31. First through hole; 32. Cylindrical barrel; 321. First avoidance groove; 33. Cover; 4. Rectangular airbag cover; 41. Second through hole; 42. Rectangular barrel; 421. Second avoidance groove; 43. Baffle; 5. Support tube; 51. First limiting convex ring; 52. Second limiting convex ring; 53. Installation notch; 54. Avoidance hole; 10. Tube material; 20. Machine head body; 201. Cover. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0031] Please also refer to Figures 1 to 8 The flexible pipe clamping fixture provided by the present invention is now described. The fixture comprises an airbag ring 1, a support member, and an air tube 2. The airbag ring 1 comprises a clamping portion capable of tightly embracing the outer periphery of a pipe 10 or pressing against the inner wall of the pipe 10 to limit the position of the pipe 10, and a limiting portion disposed opposite the inner and outer sides of the clamping portion. The support member is sleeved around the outer periphery of the airbag ring 1 or supported on the inner periphery of the airbag ring 1, and is configured to form a limiting fit with the limiting portion. The air tube 2 is connected to the inner cavity of the airbag ring 1 and is disposed through the sidewall of the support member. The air tube 2 is configured to inflate the inner cavity of the airbag ring 1, so that the airbag ring 1 is pressed against the pipe 10 under the limiting action of the support member.

[0032] Compared to the prior art, the flexible tube clamping tool provided in this embodiment inflates the inner cavity of an airbag ring 1 through an air tube 2. Under the restraining action of a support member on the limiting portion of the airbag ring 1, the airbag ring 1 expands toward the clamping portion, causing the clamping portion to press against the tube 10 to achieve the purpose of clamping the tube 10. Because the airbag ring 1 is made of an elastic material and forms soft contact with the tube 10, it can achieve flexible clamping of the tube 10, evenly apply force to the tube 10, and prevent damage to the tube 10, thereby ensuring the molding quality of the tube 10 and reducing the requirements for the surface roughness of the tube 10. Furthermore, the expansion of the airbag ring 1 causes the clamping portion to fit tightly against the tube 10, forming a seal. This makes the flexible tube clamping tool more suitable for applications requiring heating and heat preservation of the tube 10, thereby expanding the scope of application of the tool.

[0033] In this embodiment, the airbag ring 1 is made of silicone, which imparts excellent flexibility and resilience. During inflation, it adheres tightly to the surface of the tubing 10, reducing localized pressure concentration and preventing damage to the tubing 10. It also rebounds quickly after deflation, releasing the tubing 10. Furthermore, the silicone airbag ring 1 is heat-resistant, maintaining a stable grip even when used to clamp hot nylon tubing undergoing molding. The support member, a steel component, provides a mounting support for the airbag ring 1. The support member and the stopper of the airbag ring 1 form a stopper to restrict the expansion direction of the airbag ring 1, forcing it to expand toward the tubing 10, creating a pressure-holding effect on the tubing 10.

[0034] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figures 1 to 3 The airbag ring 1 is a cylindrical ring-shaped component. The clamping part is the inner circumferential wall of the airbag ring 1, which is used to tightly embrace the outer circumference of the tube 10. The limiting part is the outer circumferential wall and both side walls of the airbag ring 1. The support member is a cylindrical airbag cover 3 arranged on the outside of the airbag ring 1. The cylindrical airbag cover 3 is provided with a first through hole 31 coaxially arranged with the airbag ring 1 for the tube 10 to pass through. The trachea 2 is connected to the outer circumferential wall of the airbag ring 1 and is arranged through the circumferential wall of the cylindrical airbag cover 3.

[0035] In this embodiment, the inner wall of the cylindrical airbag cover 3 is designed to fit against the outer wall of the cylindrical airbag ring 1, limiting the expansion of the airbag ring 1 toward the outer circumference and both side walls. The tubing 10 passes through the inner bore of the airbag ring 1 and the first through hole 31. Compressed air is then pumped into the inner cavity of the airbag ring 1 via the air tube 2. The airbag ring 1 expands axially, gradually reducing its inner bore diameter until it wraps around and presses against the outer circumference of the tubing 10, effectively clamping the outer wall of the tubing 10.

[0036] Specifically, the first through hole 31 does not participate in the clamping of the tube 10, and its diameter is larger than the outer diameter of the tube 10 to avoid friction with the tube 10. When the airbag ring 1 is in its uninflated state, the inner diameter of the airbag ring 1 is also larger than the outer diameter of the tube 10, maintaining a certain gap between the airbag ring 1 and the tube 10 to facilitate unobstructed passage of the tube 10 and avoid contact friction with the airbag ring 1 when the tube 10 passes through.

[0037] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 3 The cylindrical airbag cover 3 includes a cylindrical body 32 with an opening at one end and a blocking cover 33 for blocking the opening of the cylindrical body 32. The first through hole 31 is set through the cylindrical body 32 and the blocking cover 33. The airbag ring 1 is located in the cylindrical body 32. The circumferential wall of the cylindrical body 32 is provided with a first avoidance groove 321 through which the air supply pipe 2 passes and extends along the axial direction of the cylindrical body 32. The first avoidance groove 321 is communicated with the opening of the cylindrical body 32.

[0038] In this embodiment, the blocking cover 33 is connected to the cylindrical body 32 using screws. The cylindrical airbag cover 3 utilizes a detachable connection structure formed by the cylindrical body 32 and blocking cover 33, facilitating the installation and removal of the airbag ring 1. First, the trachea 2 is connected to the airbag ring 1 via a threaded connection or other means, establishing communication between the trachea 2 and the inner cavity of the airbag ring 1. The airbag ring 1 is then installed into the cylindrical body 32. During this process, the trachea 2 can move along the first avoidance groove 321, allowing the airbag ring 1 to be smoothly installed into the cylindrical body 32, with the cylindrical body 32 constraining the outer circumferential wall and one side wall of the airbag ring 1. Finally, the blocking cover 33 is connected to the end of the cylindrical body 32, constraining the blocking cover 33 against the other side wall of the airbag ring 1.

[0039] Furthermore, a flange plate may be provided on the outer peripheral wall of the cylindrical body 32 to facilitate connection between the cylindrical airbag cover 3 and processing equipment.

[0040] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 4 and Figure 6 The airbag ring 1 is a rectangular component. The clamping part is the inner wall of the airbag ring 1, which is used to tightly embrace the outer periphery of the tube 10. The limiting part is the outer wall and the two end walls of the airbag ring 1. The support member is a rectangular airbag cover 4 arranged on the outside of the airbag ring 1. The rectangular airbag cover 4 is provided with a second through hole 41 coaxially arranged with the inner hole of the airbag ring 1 for the tube 10 to pass through. The trachea 2 is connected to the outer wall of the airbag ring 1 and passes through the side wall of the rectangular airbag cover 4.

[0041] In actual use, the airbag ring 1 can be configured in various shapes depending on the application environment of the flexible tube clamping tool to match the processing equipment and achieve a clamping effect on the tube 10. In this embodiment, the inner wall of the rectangular airbag cover 4 is designed to conform to the outer wall of the rectangular airbag ring 1, thereby limiting the expansion of the airbag ring 1 toward the outer side and end walls. The tube 10 passes through the second through hole 41 and the inner bore of the airbag ring 1. Compressed air is injected into the airbag ring 1 through the air tube 2, causing the airbag ring 1 to expand toward the center, gradually reducing the inner bore diameter of the airbag ring 1 until it wraps around and presses against the outer circumference of the tube 10, effectively clamping the outer wall of the tube 10.

[0042] In this embodiment, the second through hole 41 is also larger than the outer diameter of the tube 10. When the airbag ring 1 is in its uninflated state, the inner hole of the airbag ring 1 is also larger than the outer diameter of the tube 10, so that the tube 10 can pass through without obstruction.

[0043] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 6The rectangular airbag cover 4 includes a rectangular cylinder 42 with an opening on one side and a baffle 43 for blocking the opening of the rectangular cylinder 42. The second through hole 41 is set through the rectangular cylinder 42 and the baffle 43. The airbag ring 1 is located in the rectangular cylinder 42. The side wall of the rectangular cylinder 42 is provided with a second avoidance groove 421 through which the air supply pipe 2 passes and extends along the axial direction of the airbag ring 1. The second avoidance groove 421 is communicated with the opening of the rectangular cylinder 42.

[0044] In this embodiment, the baffle 43 and rectangular cylindrical body 42 are also detachably connected using screws, facilitating assembly and disassembly of the airbag ring 1. The rectangular cylindrical body 42 limits the outer wall and one end wall of the airbag ring 1, while the baffle 43 limits the other end wall of the airbag ring 1. A second relief groove 421 allows the trachea 2 to move with the airbag ring 1 into the rectangular cylindrical body 42, simplifying the installation of the airbag ring 1. The rectangular cylindrical body 42 not only serves to install and limit the airbag ring 1 but also facilitates the connection of the rectangular airbag cover 4 to processing equipment.

[0045] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 7 and Figure 8 The airbag ring 1 is a cylindrical ring-shaped component. The clamping part is the outer circumferential wall of the airbag ring 1, which is used to press outward on the inner circumferential wall of the tube material 10. The limiting part is the inner circumferential wall and both side walls of the airbag ring 1. The support member is the support tube 5. The airbag ring 1 is sleeved on the outer circumference of the support tube 5. The trachea 2 is connected to the inner circumferential wall of the airbag ring 1 and is arranged through the circumferential wall of the support tube 5.

[0046] In this embodiment, the airbag ring 1 is sleeved around the outer periphery of the support tube 5, with the support tube 5 acting as a stopper for the inner and side walls of the airbag ring 1. During use, the support tube 5 and airbag ring 1 are inserted into the tubing 10 to be clamped. Compressed air is then pumped into the inner cavity of the airbag ring 1 through the air tube 2. The airbag ring 1 expands outward until its outer wall presses against the inner wall of the tubing 10, effectively supporting and clamping the inner wall of the tubing 10. After deflation, the airbag ring 1 contracts and rebounds, creating a gap between its outer wall and the inner wall of the tubing 10. The tubing 10 is freed from the support provided by the airbag ring 1 and released.

[0047] One end of the air tube 2 passes through the peripheral wall of the support tube 5 and is connected to the inner peripheral wall of the airbag ring 1 , and the other end is led outward along the inner hole of the support tube 5 and connected to an external air source.

[0048] The clamping method provided in this embodiment takes into account the fixing requirements of the support tube 5 and is generally suitable for the scenario of clamping the end of the pipe material 10. In this scenario, the outer peripheral wall of the pipe material 10 can be processed and formed in conjunction with processing equipment.

[0049] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 8 A first limiting protrusion 51 and a second limiting protrusion 52 are provided on the outer peripheral wall of the support tube 5. The first limiting protrusion 51 and the second limiting protrusion 52 are arranged at intervals along the axial direction of the support tube 5, and the airbag ring 1 is located between the first limiting protrusion 51 and the second limiting protrusion 52.

[0050] In this embodiment, the first limiting protrusion 51 and the second limiting protrusion 52 are respectively used to abut against the two side walls of the airbag ring 1 to limit the two side walls of the airbag ring 1 and restrict the axial expansion of the airbag ring 1.

[0051] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 8 The first limiting protrusion 51 is located at the end of the support tube 5 and is detachably connected to the support tube 5. The peripheral wall of the support tube 5 is provided with an installation notch 53 through which the air supply pipe 2 passes and extends axially to the end of the support tube 5.

[0052] In this embodiment, the second limiting protrusion 52 can be fixedly connected to the outer peripheral wall of the support tube 5 by welding or other means, thereby stably limiting the position of one side wall of the airbag ring 1. The first limiting protrusion 51 is detachably connected to the end of the support tube 5 by a threaded connection, facilitating the installation of the airbag ring 1 and forming a limiting fit with the other side wall of the airbag ring 1.

[0053] During installation, the trachea 2 is first connected to the inner wall of the airbag ring 1, connecting it to the internal cavity of the airbag ring 1. The airbag ring 1 is then sleeved onto the outer circumference of the support tube 5 and pushed axially until one side of the airbag ring 1 contacts and engages with the second retaining protrusion 52. During this process, the trachea 2 moves axially along the installation notch 53 along with the airbag ring 1, simplifying the installation of the airbag ring 1. Finally, the first retaining protrusion 51 is threaded onto the end of the support tube 5, contacting and engaging with the other side of the airbag ring 1 to form a retaining relationship.

[0054] As a specific embodiment of the flexible pipe clamping tool provided by the utility model, see Figure 8 The trachea 2 includes a connecting branch 21 connected to the inner wall of the airbag ring 1 and an extension tube 22 connected to the connecting branch 21. The extension tube 22 is used to be connected to an external air source. A positioning nut 23 is threadedly sleeved on the connecting branch 21. The positioning nut 23 abuts against the inner wall of the support tube 5. An avoidance hole 54 is provided on the peripheral wall of the support tube 5 for the extension tube 22 to pass through. The avoidance hole 54 is used to guide the extension tube 22 to extend to the outside of the pipe material 10.

[0055] In this embodiment, the trachea 2 is configured as a separate structure consisting of a connecting branch 21 and an extension tube 22, which facilitates the connection operation between the trachea 2 and the airbag ring 1. During installation, the connecting branch 21 is first connected to the airbag ring 1, and then the airbag ring 1 and the connecting branch 21 are installed on the support tube 5. The positioning nut 23 is then sleeved on the outer circumference of the connecting branch 21 and tightened until it abuts against the inner wall of the support tube 5. The connecting branch 21 and the positioning nut 23 can stably position the airbag ring 1 on the support tube 5, preventing the airbag ring 1 from shifting during the process of flushing and deflating the airbag ring 1.

[0056] After fixing the airbag ring 1 and the connecting branch pipe 21, connect the extension pipe 22 to the connecting branch pipe 21 from the tube end of the support tube 5, stretch the extension pipe 22 toward the other tube end of the support tube 5, and pass the extended end of the extension pipe 22 through the avoidance hole 54 at the other tube end of the support tube 5, so that the extension pipe 22 can extend to the outside of the pipe material 10 when the airbag ring 1 clamps the pipe material 10, so as to facilitate connection with the external air source.

[0057] Specifically, an end of the support tube 5 away from the first limiting protruding ring 51 is connected to a mounting flange plate, which facilitates connecting the support tube 5 to the processing equipment to stably clamp the pipe material 10.

[0058] Based on the same inventive concept, see Figure 9 and Figure 10 The embodiment of the present application also provides a nylon tube automatic forming bending machine, including a head body 20 and a flexible pipe clamping tooling proposed in any of the above items, wherein the head body 20 is suitable for forming a support member, the airbag ring 1 is located in the head body 20, and the air pipe 2 is arranged to pass through the head body 20 downward.

[0059] In this embodiment, when bending a nylon tube to be formed at a high temperature, it is necessary to stably clamp the outer peripheral wall of the nylon tube. Given that the head body 20 of the existing nylon tube automatic forming and bending machine is provided with a mounting cavity open to one side, the airbag ring 1 provided in this application can be matched with the size of the mounting cavity of the head body 20 so that the airbag ring 1 can be installed in the mounting cavity. A cover 201 with a through hole is provided at the opening of the mounting cavity to seal the airbag ring 1 in the mounting cavity, so that the outer side wall and both end walls of the airbag ring 1 are limited. The cover 201 can be pressed into the mounting cavity by a tube bending mold connected to the end of the head body 20. Air is inflated into the inner cavity of the airbag ring 1 through the air pipe 2, and the airbag ring 1 expands in the axial direction, thereby achieving flexible clamping of the nylon tube and preventing indentation of the nylon tube to be formed at a high temperature.

[0060] Specifically, a pressure sensor is provided on the head body 20 for real-time monitoring of the pressure of the airbag ring 1 in the installation cavity. The nylon tube automatic forming pipe bending machine also includes a controller, and a solenoid valve is connected between the air pipe 2 and the external air source. The solenoid valve and the pressure sensor are both electrically connected to the controller.

[0061] Based on the above configuration, when the nylon tube automatic forming and bending machine needs to bend the nylon tube material 10, the solenoid valve is opened, and the external air source inflates the airbag ring 1 through the air pipe 2. The airbag ring 1 expands and clamps the nylon tube material 10. During this process, the pressure sensor monitors the pressure of the airbag ring 1 in real time, keeping the airbag ring 1 in a stable clamping state. When the set pressure is exceeded, the controller controls the solenoid valve to operate and release the air and pressure of the airbag ring 1. When the bending operation is completed and the feeding needs to continue, the controller controls the solenoid valve to reverse direction, so that the airbag ring 1 is exhausted outward, and the airbag ring 1 shrinks and rebounds, allowing the nylon tube material 10 to pass through without resistance.

[0062] The beneficial effects of the nylon tube automatic forming and bending machine provided in this embodiment are the same as the beneficial effects of the aforementioned flexible pipe clamping tooling, and will not be repeated here.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A flexible pipe clamping tool, characterized in that: include: An airbag ring, the airbag ring having a clamping portion capable of tightly hugging the outer periphery of the pipe or pressing against the inner wall of the pipe to limit the position of the pipe, and a limiting portion arranged opposite to the inner and outer sides of the clamping portion; A support member, sleeved on the outer circumference of the airbag ring or supported on the inner circumference of the airbag ring, the support member being used to form a limiting fit with the limiting portion; The trachea is communicated with the inner cavity of the airbag ring and is arranged through the side wall of the support member. The trachea is used to inflate the inner cavity of the airbag ring so that the airbag ring is pressed against the pipe material under the limiting action of the support member.

2. A flexible pipe clamping tool as claimed in claim 1, characterized in that: The airbag ring is a cylindrical ring-shaped component, the clamping part is the inner peripheral wall of the airbag ring, which is used to clamp the outer periphery of the tube material, the limiting part is the outer peripheral wall and two side walls of the airbag ring, and the support member is a cylindrical airbag cover arranged on the outside of the airbag ring. The cylindrical airbag cover is provided with a first through hole coaxially arranged with the airbag ring for the tube material to pass through, and the air pipe is connected to the outer peripheral wall of the airbag ring and is arranged through the peripheral wall of the cylindrical airbag cover.

3. A flexible pipe clamping tool as claimed in claim 2, characterized in that: The cylindrical airbag cover includes a cylindrical body with an opening at one end and a blocking cover for blocking the opening of the cylindrical body. The first through hole is arranged through the cylindrical body and the blocking cover. The airbag ring is located in the cylindrical body. The peripheral wall of the cylindrical body is provided with a first avoidance groove for the air pipe to pass through and extending along the axial direction of the cylindrical body. The first avoidance groove is connected to the opening of the cylindrical body.

4. A flexible pipe clamping tool as claimed in claim 1, characterized in that: The airbag ring is a rectangular component, the clamping part is the inner wall of the airbag ring, which is used to clamp the outer periphery of the tube material, the limiting part is the outer wall and the two end walls of the airbag ring, and the support member is a rectangular airbag cover arranged on the outside of the airbag ring. The rectangular airbag cover is provided with a second through hole coaxially arranged with the inner hole of the airbag ring for the tube material to pass through, and the air pipe is connected to the outer wall of the airbag ring and is arranged to pass through the side wall of the rectangular airbag cover.

5. A flexible pipe clamping tool as claimed in claim 4, characterized in that: The rectangular airbag cover includes a rectangular cylinder with an opening on one side and a baffle for sealing the opening of the rectangular cylinder. The second through hole is set through the rectangular cylinder and the baffle. The airbag ring is located in the rectangular cylinder. The side wall of the rectangular cylinder is provided with a second avoidance groove for the air pipe to pass through and extending along the axial direction of the airbag ring. The second avoidance groove is connected to the opening of the rectangular cylinder.

6. The flexible pipe clamping tool according to claim 1, characterized in that: The airbag ring is a cylindrical ring-shaped component, the clamping part is the outer peripheral wall of the airbag ring, which is used to press outward on the inner peripheral wall of the tube material, the limiting part is the inner peripheral wall and two side walls of the airbag ring, the support member is a support tube, the airbag ring is sleeved on the outer periphery of the support tube, and the air tube is connected to the inner peripheral wall of the airbag ring and is arranged through the peripheral wall of the support tube.

7. A flexible pipe clamping tool as claimed in claim 6, characterized in that: A first and a second limiting protrusion ring are provided on the outer peripheral wall of the support tube. The first and the second limiting protrusion rings are arranged at intervals along the axial direction of the support tube, and the airbag ring is located between the first and the second limiting protrusion rings.

8. The flexible pipe clamping tool according to claim 7, characterized in that: The first limiting protruding ring is located at the end of the support tube and is detachably connected to the support tube. The peripheral wall of the support tube is provided with an installation notch for the air pipe to pass through and extending axially to the end of the support tube.

9. A flexible pipe clamping tool as claimed in claim 8, characterized in that: The air pipe includes a connecting branch connected to the inner circumferential wall of the airbag ring and an extension tube connected to the connecting branch. The extension tube is used to be connected to an external air source. A positioning nut is threadedly sleeved on the connecting branch. The positioning nut abuts against the inner circumferential wall of the support tube. An avoidance hole is provided on the circumferential wall of the support tube for the extension tube to pass through. The avoidance hole is used to guide the extension tube to extend to the outside of the pipe material.

10. Nylon tube automatic forming bending machine, characterized by: It comprises a machine head body and a flexible pipe clamping tool as described in any one of claims 1 to 9, wherein the machine head body is suitable for forming the support member, the airbag ring is located in the machine head body, and the air pipe is arranged to pass through the machine head body downward.

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