An internal expansion clamping mechanism for a pipe bender

Abstract

The utility model relates to the technical field of bent pipe, concretely is a kind of inner expansion clamping mechanism for pipe bender, including the turnover seat of fixed connection in pivot, the upper surface of turnover seat is fixedly connected with slide rail, the inside slide connection of slide rail has expansion module, the expansion module includes slide, lifting seat, gas expansion axle, support seat and contact seat, slide is slidably connected in the inside of slide rail, in the utility model, the height of lifting seat is adjustable, i.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending technology, specifically an internal expansion clamping mechanism for a pipe bending machine. Background Technology

[0002] The internal expansion clamping mechanism of the pipe bending machine is used to fix the pipe internally. For reference, please refer to the announcement number CN216858021U, which describes an internal expansion clamping mechanism for a stainless steel pipe bending machine. It relates to the field of pipe bending machine technology and includes a worktable. A rotating shaft is movably installed on the top of the worktable. The worktable is connected to a first rotating seat and a second rotating seat through the rotating shaft. A first sliding groove is opened on the top of the first rotating seat.

[0003] The above-mentioned device effectively avoids the increased cost of bending pipes caused by existing clamping methods. However, the internal expansion clamping mechanism is relatively short, which means that it can only perform internal expansion clamping at the pipe end. If the length of the internal expansion clamping mechanism is extended, the end is prone to sinking due to gravity, thus reducing the internal support effect on the pipe. Utility Model Content

[0004] The purpose of this invention is to provide an internal expansion clamping mechanism for a pipe bending machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An internal expansion clamping mechanism for a pipe bending machine includes a flipping seat fixedly connected to a rotating shaft, and a slide rail fixedly connected to the upper surface of the flipping seat;

[0007] The slide rail is internally slidably connected to a tensioning module, which includes a slide block, a lifting seat, an air shaft, a support seat, and a contact seat. The slide block is slidably connected to the inside of the slide rail. The lifting seat is embedded and movably connected to the upper surface of the slide block. The air shaft is fixedly connected to the rear surface of the lifting seat. The support seat is embedded and movably connected to the upper surface of the slide block. A contact rod is fixedly connected to the lower surface of the support seat. The contact seat is fixedly connected to the lower surface of the flip seat. A spring is nested on the outer surface of the contact rod.

[0008] Furthermore, the support base is in contact with the air shaft, and the rear end of the support base is an inclined surface. The contact rod passes through the slide block, one end of the spring is in contact with the contact base, and the other end of the spring is in contact with the contact rod.

[0009] Furthermore, the upper surface of the flipping seat is provided with a drive module, which includes a mounting base, a servo motor and a nut. The mounting base is fixedly connected to the upper surface of the flipping seat, and a trapezoidal lead screw is rotatably connected to the outer surface of the mounting base. The servo motor is fixedly connected to the outer surface of the mounting base, and the output end of the servo motor is fixedly connected to the trapezoidal lead screw. The nut is fixedly connected to the outer surface of the slide.

[0010] Furthermore, the support base and the trapezoidal lead screw are threaded together, and a bellows is fixedly connected to the outer surface of the nut.

[0011] Furthermore, an electric push rod is fixedly connected to the lower surface of the slide, and the output end of the electric push rod is fixedly connected to the lifting seat.

[0012] Furthermore, an air nozzle is embedded in the upper surface of the air shaft, and the air nozzle can be used for air intake and air exhaust of the air shaft.

[0013] Furthermore, a pipe bending mold is fixedly connected to the upper surface of the rotating shaft, and the tangential positions of the slide rail and the pipe bending mold correspond to each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The air shaft is inserted into one end of the pipe to provide internal support and tension. The height of the lifting seat is adjustable, which can change the center point position of the air shaft to make it suitable for pipes of different diameters. The support seat supports one end of the air shaft before it is inserted into the pipe. At this time, the support seat is equipped with a spring through a contact rod covered with rubber. The spring force applies an upward force to the contact rod, making the air shaft more stable when it is inserted into the pipe and ensuring the required internal support effect.

[0016] 2. An electric push rod is fixedly connected to the lower surface of the slide, and its output end is fixedly connected to the lifting seat. It can precisely control the height of the lifting seat, thereby changing the center point position of the air expansion shaft, so that it can better adapt to pipes of different diameters and improve the versatility and flexibility of the pipe bending machine. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the flip-up base structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the tensioning module structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the drive module structure of this utility model.

[0021] In the diagram: 1. Pipe bending machine body; 101. Rotating shaft; 102. Pipe bending mold; 2. Tilting seat; 201. Slide rail; 3. Electric push rod; 4. Pipe; 5. Drive module; 501. Mounting seat; 502. Servo motor; 503. Trapezoidal lead screw; 504. Corrugated pipe; 505. Nut; 6. Tensioning module; 601. Slide seat; 602. Lifting seat; 603. Air shaft; 605. Support seat; 606. Contact seat; 607. Contact rod; 608. Spring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 In this embodiment of the utility model, an internal expansion clamping mechanism for a pipe bending machine includes a flipping seat 2 fixedly connected to a rotating shaft 101, and a slide rail 201 fixedly connected to the upper surface of the flipping seat 2.

[0024] The slide rail 201 has a tensioning module 6 internally slidably connected. The tensioning module 6 includes a slide seat 601, a lifting seat 602, an air shaft 603, a support seat 605, and a contact seat 606. The slide seat 601 is slidably connected to the inside of the slide rail 201. The lifting seat 602 is embedded and movably connected to the upper surface of the slide seat 601. The air shaft 603 is fixedly connected to the rear surface of the lifting seat 602. The support seat 605 is embedded and movably connected to the upper surface of the slide seat 601. A contact rod 607 is fixedly connected to the lower surface of the support seat 605. The contact seat 606 is fixedly connected to the lower surface of the flip seat 2. A spring 608 is nested on the outer surface of the contact rod 607. An air nozzle is embedded on the upper surface of the air shaft 603. The air nozzle can be used for air intake and air exhaust of the air shaft 603.

[0025] Specifically, a rotating shaft 101 is rotatably connected to the upper surface of the pipe bending machine body 1. When the rotating shaft 101 rotates, it drives the flipping seat 2 to flip. At the same time, it works with the clamping mechanism and the mold to bend the pipe 4. During bending, the air expansion shaft 603 is inserted into one end of the pipe 4 to provide internal support and tension for the pipe 4. The height of the lifting seat 602 is adjustable, which can change the center point position of the air expansion shaft 603 to make it suitable for pipes 4 of different diameters. Before the air expansion shaft 603 is inserted into the pipe 4, the support seat 605 supports one end of the air expansion shaft 603. At this time, the support seat 605 is equipped with a spring 608 through a contact rod 607 covered with rubber. The elastic force of the spring 608 applies an upward force to the contact rod 607, making the air expansion shaft 603 more stable when it is inserted into the pipe 4.

[0026] Example 1

[0027] like Figure 1-4 As shown, the support 605 is in contact with the air shaft 603, and the rear end of the support 605 is an inclined surface. The contact rod 607 passes through the slide 601. One end of the spring 608 is in contact with the contact seat 606, and the other end of the spring 608 is in contact with the contact rod 607.

[0028] In this embodiment, when the air shaft 603 needs to be inserted into the pipe 4 for internal support and tensioning operations, since one end of the spring 608 is in contact with the contact seat 606 and the other end is in contact with the contact rod 607, the inclined surface of the support seat 605 is subjected to force and moves downward when it contacts the pipe 4, applying a downward force to the spring 608, causing the support seat 605 to move downward, ensuring that the air shaft 603 is smoothly inserted into the pipe 4, thereby providing a stable and reliable internal support and tensioning effect for subsequent pipe bending operations.

[0029] Example 2

[0030] Based on Embodiment 1, in order to overcome the problem of inconvenience in adjusting the position of slide 601 in Embodiment 1.

[0031] like Figure 1-4 As shown, a drive module 5 is provided on the upper surface of the flip base 2. The drive module 5 includes a mounting base 501, a servo motor 502, and a nut 505. The mounting base 501 is fixedly connected to the upper surface of the flip base 2. A trapezoidal lead screw 503 is rotatably connected to the outer surface of the mounting base 501. The servo motor 502 is fixedly connected to the outer surface of the mounting base 501. The output end of the servo motor 502 is fixedly connected to the trapezoidal lead screw 503. The nut 505 is fixedly connected to the outer surface of the slide 601. The support base 605 and the trapezoidal lead screw 503 are threadedly connected. A bellows 504 is fixedly connected to the outer surface of the nut 505.

[0032] In this embodiment, by setting up a drive module 5, the servo motor 502 drives the trapezoidal lead screw 503 to rotate. Since the nut 505 is fixedly connected to the outer surface of the slide block 601 and threadedly connected to the trapezoidal lead screw 503, when the trapezoidal lead screw 503 rotates, the slide block 601 can move smoothly within the slide rail 201, thereby facilitating the adjustment of the position of the slide block 601 and the depth of insertion of the air shaft 603. The bellows 504 is fixedly connected to the outer surface of the nut 505, which can play a protective role, preventing external impurities from entering the threaded connection and affecting the movement accuracy and smoothness of the slide block 601.

[0033] like Figure 1-4 As shown, an electric push rod 3 is fixedly connected to the lower surface of the slide 601. The output end of the electric push rod 3 is fixedly connected to the lifting seat 602. A pipe bending mold 102 is fixedly connected to the upper surface of the rotating shaft 101. The tangential positions of the slide rail 201 and the pipe bending mold 102 are corresponding.

[0034] In this embodiment, the electric push rod 3, which is fixedly connected to the lower surface of the slide 601, has its output end fixedly connected to the lifting seat 602. This allows for precise control of the height of the lifting seat 602, thereby changing the center point position of the air expansion shaft 603. This enables the air expansion shaft 603 to better adapt to pipes 4 of different diameters, improving the versatility and flexibility of the pipe bending machine. The tangential positions of the slide rail 201 and the pipe bending die 102 correspond to each other. This layout is beneficial because during the bending process, the tensioning module 6 can precisely cooperate with the pipe bending die 102 to effectively support and tension the pipe 4, ensuring the quality of the pipe bending.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An internal expansion clamping mechanism for a pipe bending machine, comprising a flipping seat (2) fixedly connected to a rotating shaft (101), wherein a slide rail (201) is fixedly connected to the upper surface of the flipping seat (2); Its features are, The slide rail (201) is internally slidably connected to a tensioning module (6), the tensioning module (6) comprising: The slide block (601) is slidably connected to the inside of the slide rail (201); The lifting seat (602) is embedded and movably connected to the upper surface of the slide (601); An air shaft (603) is fixedly connected to the rear surface of the lifting seat (602); A support base (605) is embedded and movably connected to the upper surface of the slide (601), and a contact rod (607) is fixedly connected to the lower surface of the support base (605); The contact seat (606) is fixedly connected to the lower surface of the flip seat (2), and the outer surface of the contact rod (607) is nested with a spring (608).

2. The internal expansion clamping mechanism for a pipe bending machine according to claim 1, characterized in that, The support base (605) is in contact with the air shaft (603), and the rear end of the support base (605) is inclined. The contact rod (607) passes through the slide (601). One end of the spring (608) is in contact with the contact base (606), and the other end of the spring (608) is in contact with the contact rod (607).

3. The internal expansion clamping mechanism for a pipe bending machine according to claim 1 or 2, characterized in that, The upper surface of the flip base (2) is provided with a drive module (5), the drive module (5) comprising: Mounting base (501) is fixedly connected to the upper surface of the flip base (2), and a trapezoidal lead screw (503) is embedded and rotatably connected to the outer surface of the mounting base (501); A servo motor (502) is fixedly connected to the outer surface of the mounting base (501), and the output end of the servo motor (502) is fixedly connected to the trapezoidal lead screw (503); Nut (505) is fixedly connected to the outer surface of slide (601).

4. The internal expansion clamping mechanism for a pipe bending machine according to claim 3, characterized in that, The support base (605) and the trapezoidal lead screw (503) are threaded together, and a bellows (504) is fixedly connected to the outer surface of the nut (505).

5. The internal expansion clamping mechanism for a pipe bending machine according to claim 1, characterized in that, An electric push rod (3) is fixedly connected to the lower surface of the slide (601), and the output end of the electric push rod (3) is fixedly connected to the lifting seat (602).

6. The internal expansion clamping mechanism for a pipe bending machine according to claim 1, characterized in that, An air nozzle is embedded in the upper surface of the air shaft (603), which can be used for air intake and air exhaust of the air shaft (603).

7. The internal expansion clamping mechanism for a pipe bending machine according to claim 1, characterized in that, The upper surface of the rotating shaft (101) is fixedly connected to the pipe bending mold (102), and the tangential positions of the slide rail (201) and the pipe bending mold (102) are corresponding.

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