A device for expanding a profiled tube

Abstract

The utility model relates to the technical field of special-shaped pipe processing, specifically to a special-shaped pipe expansion forming device, including the workbench, the top symmetry of workbench is equipped with two fixed sliding blocks, is equipped with the drive assembly for controlling two fixed sliding blocks to be close to each other or each other of workbench, two fixed sliding blocks all are transversely slid and are equipped with the mounting bracket, the mounting bracket all are longitudinally inserted and have the movable sliding block, through setting mounting bracket, movable sliding block and self -adaptation positioning assembly, one, can quickly switch expansion piece, effectively shorten the time of changing type, is suitable for the flexible production scene of small -batch multi -variety, second, when expansion piece wears, only needs to replace the corresponding component alone, need not to dismantle the device as a whole, reduce maintenance time and cost, can pass through the expansion piece of different specifications of custom simultaneously, enhance the versatility of equipment, third, when expansion piece and special-shaped pipe contact, can automatically fix the mounting bracket position, ensure that the size consistency after special-shaped pipe expansion.

Description

Technical Field

[0001] This utility model relates to the field of special-shaped tube processing technology, and in particular to a special-shaped tube expansion forming device. Background Technology

[0002] The shaped tube expansion and forming device, as a core piece of equipment used in the industrial manufacturing field for processing shaped tubes, is used to process shaped tubes in their initial form into tubes that meet specific specifications and shape requirements through expansion and forming operations, so as to meet the needs of different fields.

[0003] A high-precision tube expansion forming device is disclosed in Chinese Patent Publication No. CN219378727U. In this device, the expansion roller and the mounting block are fixedly installed by fixing bolts, which facilitates the replacement of expansion rollers of different diameters. However, according to the tube expansion forming devices provided in related fields and existing technologies, most traditional devices are customized for a single specification (such as fixed molds or expansion parts), and can only process tubes of specific shapes or sizes. If different specifications of products need to be produced, the entire equipment needs to be replaced or the mold needs to be readjusted. The changeover time is long and the equipment utilization rate is low, which is especially unsuitable for small-batch, multi-variety order scenarios. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a device for expanding and forming irregular tubes.

[0005] The objective of this utility model is achieved through the following technical solution: a device for expanding and forming irregularly shaped tubes, comprising a worktable, two fixed sliders symmetrically arranged on the top of the worktable, a driving component for controlling the two fixed sliders to move closer or further apart, a mounting bracket slidably mounted on each of the two fixed sliders, and a movable slider inserted longitudinally into each mounting bracket; an adaptive positioning component for limiting the mounting bracket and the movable slider is provided inside each of the two movable sliders, a mounting plate is fixedly mounted on the opposite side of each of the two adaptive positioning components, and an expanding component for expanding and forming irregularly shaped tubes is fixedly mounted on the opposite side of each of the two mounting plates, and a limiting component for pressing irregularly shaped tubes is provided on the worktable.

[0006] Preferably, the adaptive positioning component includes a sliding rod slidably connected to the movable slider, a pin is fixedly provided at one end of the sliding rod near the fixed slider, the mounting plate is fixedly installed at the other end of the sliding rod, the movable slider has a receiving groove corresponding to the position of the pin, and the side of the pin facing the sliding rod is connected to the receiving groove by an elastic element.

[0007] Preferably, the end of the pin furthest from the sliding rod is rounded.

[0008] Preferably, the fixed slider has a matching insertion hole corresponding to the position of the pin, and the mounting bracket has through holes corresponding to the positions of multiple pins.

[0009] Preferably, the cross-section of the sliding rod is hexagonal, and the movable slider has a hexagonal sliding hole corresponding to the position of the sliding rod.

[0010] Preferably, the cross-sections of the fixed slider and the movable slider are both T-shaped. The mounting bracket has a horizontally extending T-shaped through groove corresponding to the position of the fixed slider, and the mounting bracket has a vertically extending T-shaped groove corresponding to the positions of the multiple movable sliders. The opening of the T-shaped groove is set upward.

[0011] Preferably, the drive assembly includes two threaded connectors fixedly mounted on the two fixed sliders, and the worktable is rotatably provided with left and right threaded rods corresponding to the positions of the two threaded connectors. Both threaded connectors are threadedly engaged with the left and right threaded rods. A drive component for controlling the rotation of the left and right threaded rods is fixedly mounted on the outer side of the worktable and at one end of the left and right threaded rods.

[0012] Preferably, the limiting component includes a base plate fixedly installed at the middle of the top of the workbench, a bracket fixedly installed on the rear side of the workbench, an electric push rod fixedly installed on the top of the bracket, the output end of the electric push rod passing through the top of the bracket, and a top plate fixedly installed at the end of the output end of the electric push rod, the top plate being located inside the bracket, and a flexible layer fixedly installed on the opposite side of the base plate and the top plate.

[0013] Beneficial effects:

[0014] This shaped tube expansion forming device, through the setting of a mounting frame, movable slider, and self-adaptive positioning components, has the following advantages: First, it can quickly switch expansion parts, effectively shortening the changeover time and making it suitable for flexible production scenarios with small batches and multiple varieties. Second, when the expansion parts are worn, only the corresponding parts need to be replaced individually, without disassembling the entire device, reducing maintenance time and costs. At the same time, the device's versatility can be enhanced by customizing expansion parts of different specifications. Third, when expanding shaped tubes, the mounting frame position can be automatically fixed to ensure the consistency of the expanded tube dimensions. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the drive component and the limiting component of this utility model;

[0018] Figure 3 This is a schematic diagram of the mounting bracket of this utility model;

[0019] Figure 4 This is a schematic diagram showing the state of the pin shaft when the expansion component of this utility model is not under force.

[0020] Figure 5 This is a schematic diagram showing the state of the pin shaft when the expansion component of this utility model is under force;

[0021] Figure 6 This is a schematic diagram of the movable slider and the fixed slider of this utility model;

[0022] Figure 7 This is a schematic diagram showing the disassembled structure of the adaptive positioning component and the movable slider of this utility model.

[0023] In the diagram: 1. Workbench; 2. Fixed slider; 201. Insertion hole; 3. Drive assembly; 301. Threaded connector; 302. Left and right threaded rod; 303. Drive component; 4. Mounting bracket; 401. Through hole; 402. T-shaped through groove; 403. T-shaped groove; 5. Movable slider; 501. Receiving groove; 502. Sliding hole; 6. Adaptive positioning assembly; 601. Sliding rod; 602. Pin; 603. Elastic component; 7. Mounting plate; 8. Expander; 9. Limiting assembly; 901. Base plate; 902. Bracket; 903. Electric push rod; 904. Top plate; 905. Flexible layer. Detailed Implementation

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0026] like Figures 1 to 7 As shown, a device for expanding and forming irregularly shaped tubes includes a worktable 1. Two fixed sliders 2 are symmetrically arranged on the top of the worktable 1. A drive assembly 3 is provided on the worktable 1 to control the two fixed sliders 2 to move closer or further apart. Mounting brackets 4 are laterally slidable on each of the two fixed sliders 2, and movable sliders 5 are longitudinally inserted into each mounting bracket 4. Adaptive positioning components 6 are provided inside each of the two movable sliders 5 to limit the mounting brackets 4 and the movable sliders 5. Mounting plates 7 are fixedly mounted on opposite sides of each of the two adaptive positioning components 6. Expanding members 8 for expanding and forming irregularly shaped tubes are fixedly mounted on opposite sides of each of the two mounting plates 7. Each expanding member 8 has a different shape. A limiting assembly 9 for pressing irregularly shaped tubes is provided on the worktable 1. Figures 3 to 5 As shown, the cross-sections of both the fixed slider 2 and the movable slider 5 are T-shaped. The mounting bracket 4 has a horizontally extending T-shaped through groove 402 corresponding to the position of the fixed slider 2. The mounting bracket 4 has a longitudinally extending T-shaped groove 403 corresponding to the positions of multiple movable sliders 5. The opening of the T-shaped groove 403 is set upward.

[0027] In summary, the expansion component 8 can be quickly switched using the sliding mounting bracket 4, effectively shortening the changeover time. It is suitable for flexible production scenarios with small batches and multiple varieties. There is no need to configure special equipment for each type of special tube. One set of equipment can meet the production needs of multiple specifications. It also allows the movable slider 5 and mounting bracket 4, as well as the expansion component 8 and mounting plate 7, to be switched to detachable connections.

[0028] like Figure 2 As shown, the limiting component 9 includes a base plate 901 fixedly installed at the middle of the top of the workbench 1, a bracket 902 fixedly installed on the rear side of the workbench 1, an electric push rod 903 fixedly installed on the top of the bracket 902, the output end of the electric push rod 903 passes through the top of the bracket 902, and a top plate 904 is fixedly installed at the end of the output end of the electric push rod 903. The top plate 904 is located inside the bracket 902, and a flexible layer 905 is fixedly installed on the opposite side of the base plate 901 and the top plate 904.

[0029] like Figure 2As shown, the drive assembly 3 includes two threaded connectors 301 fixedly mounted on two fixed sliders 2. The worktable 1 is rotatably provided with left and right threaded rods 302 corresponding to the positions of the two threaded connectors 301. Both threaded connectors 301 are threadedly engaged with the left and right threaded rods 302. A drive component 303 (a motor) for controlling the rotation of the left and right threaded rods 302 is fixedly mounted on the outer side of the worktable 1 and at one end of the left and right threaded rods 302.

[0030] like Figures 3 to 7 As shown, the adaptive positioning component 6 includes a sliding rod 601 slidably connected to the movable slider 5. The sliding rod 601 has a hexagonal cross-section. The movable slider 5 has a hexagonal sliding hole 502 at the position corresponding to the sliding rod 601. A pin 602 is fixedly provided at one end of the sliding rod 601 near the fixed slider 2. The mounting plate 7 is fixedly installed at the other end of the sliding rod 601. A receiving groove 501 is provided at the position corresponding to the pin 602 of the movable slider 5. The side of the pin 602 facing the sliding rod 601 is connected to the receiving groove 501 by an elastic element 603 (a spring). The end of the pin 602 away from the sliding rod 601 is rounded. The fixed slider 2 has an insertion hole 201 that matches the position of the pin 602. The mounting bracket 4 has through holes 401 at the positions of multiple pins 602.

[0031] In summary, firstly, when the movable slider 5 is installed in place or the mounting bracket 4 is slidably aligned, the adaptive positioning component 6 provides mechanical feedback (such as a "click" sound or a change in resistance) to the operator, enabling the rapid installation and alignment of the expander 8 without relying on high-precision instruments or experience. This ensures that the axis of the expander 8 coincides with the axis of the shaped tube, preventing defects such as out-of-tolerance dimensions and surface scratches after expansion due to positional misalignment. Secondly, when the expander 8 contacts the shaped tube, it causes its corresponding sliding rod 601 and pin 602 to slide towards one side of the insertion hole 201. At this time, the elastic element 603 is stretched, causing its corresponding pin 602 to insert into the insertion hole 201, fixing the position of the mounting bracket 4. In the locked state, the position of the expander 8 is stable, ensuring the dimensional consistency of the shaped tube after expansion.

[0032] The work process is as follows:

[0033] S1, such as Figure 2 As shown, during processing, the shaped tube is placed on the base plate 901, and then the position of the shaped tube is adjusted so that both ends of the shaped tube are aligned with the two oppositely arranged expansion members 8. Then, the top plate 904 is moved to one side of the base plate 901 by the electric push rod 903, thereby using the flexible layer 905 on the top plate 904 and the base plate 901 to limit the shaped tube. The flexible layer 905 can adaptively deform according to the shape of the shaped tube, thereby limiting various types of shaped tubes.

[0034] S2, such as Figures 1 to 3 As shown, after the shaped tube is positioned, the left and right threaded rods 302 are rotated by the drive component 303. Then, by utilizing the characteristics of the left and right threaded rods 302, the two threaded connectors 301 can be brought closer to each other. At this time, the threaded connectors 301 can drive the expander 8 to be inserted into the interior of the shaped tube through the fixed slider 2 and the mounting bracket 4, thereby using the expander 8 to expand and shape the shaped tube.

[0035] S3, such as Figures 1 to 3 As shown, after the expansion molding is completed, the left and right threaded rods 302 are controlled to rotate in opposite directions by the drive component 303. Then, by utilizing the characteristics of the left and right threaded rods 302, the two threaded connectors 301 can be moved away from each other. At this time, the threaded connectors 301 can drive the expansion component 8 to detach from the shaped tube through the fixed slider 2 and the mounting bracket 4. Then, the top plate 904 is controlled to move away from the bottom plate 901 by the electric push rod 903. At this time, the processed shaped tube can be taken out.

[0036] S4, such as Figures 3 to 7 As shown, when the expansion member 8 is not under force, only the rounded part of the pin 602 is inside the through hole 401 and the insertion hole 201. This allows for quick switching of the expansion member 8 via the sliding mounting bracket 4, effectively shortening the changeover time. This is suitable for flexible production scenarios with small batches and multiple varieties. There is no need to configure special equipment for each type of special tube. One set of equipment can meet the production needs of multiple specifications. It also allows the movable slider 5 and the mounting bracket 4, as well as the expansion member 8 and the mounting plate 7, to be detachably connected. When the expansion member 8 is worn, only the corresponding part needs to be replaced individually, without disassembling the entire device, reducing maintenance time and costs. At the same time, by customizing expansion members 8 of different specifications, the production needs of new types of special tubes can be quickly responded to, enhancing the versatility of the equipment.

[0037] S5, such as Figures 3 to 7 As shown, when the movable slider 5 is installed in place or the mounting bracket 4 is slid and aligned, the adaptive positioning component 6 provides mechanical feedback (such as a "click" sound or a change in resistance) to prompt the operator. Without relying on high-precision instruments or experience, the installation and alignment of the expansion component 8 can be completed quickly, ensuring that the axis of the expansion component 8 coincides with the axis of the shaped tube, and preventing defects such as out-of-tolerance dimensions and surface scratches after expansion due to positional offset.

[0038] S6, such as Figures 3 to 7 As shown, when the expander 8 comes into contact with the shaped tube, the expander 8 will cause its corresponding sliding rod 601 and pin 602 to slide to one side of the insertion hole 201. At this time, the elastic element 603 will be stretched, so that its corresponding pin 602 will be inserted into the insertion hole 201, fixing the position of the mounting bracket 4. In the locked state, the position of the expander 8 is stable, ensuring the dimensional consistency of the shaped tube after expansion.

[0039] S7, such as Figures 3 to 7 As shown, after the expansion is completed, the adaptive positioning component 6 automatically unlocks (the stretched elastic element 603 gradually recovers, thereby causing the sliding rod 601 and the pin 602 to slide away from the insertion hole 201), allowing the mounting bracket 4 to slide and adjust again without manual unlocking, and can quickly enter the next expansion or changeover process, improving production continuity.

[0040] The worktable 1, drive assembly 3 and expansion member 8 described in this application are all known technologies in this field, and therefore their specific structures and working principles are not described in detail.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A profiled tube expansion forming device, characterised in that: Includes a workbench (1), on which two fixed sliders (2) are symmetrically arranged on the top. The workbench (1) is provided with a drive assembly (3) for controlling the two fixed sliders (2) to move closer or further apart from each other. Mounting brackets (4) are slidably arranged on both fixed sliders (2), and movable sliders (5) are inserted longitudinally on each mounting bracket (4). The interior of each of the two movable sliders (5) is provided with an adaptive positioning component (6) for limiting the mounting bracket (4) and the movable slider (5). The two adaptive positioning components (6) are fixedly mounted with mounting plates (7) on opposite sides. The two mounting plates (7) are fixedly mounted with expansion members (8) for expanding and forming the shaped tube on opposite sides. The worktable (1) is provided with a limiting component (9) for pressing the shaped tube.

2. A device for expanding a profiled tube according to claim 1, characterized in that: The adaptive positioning component (6) includes a sliding rod (601) slidably connected to the movable slider (5). A pin (602) is fixedly provided at one end of the sliding rod (601) near the fixed slider (2). The mounting plate (7) is fixedly installed at the other end of the sliding rod (601). The movable slider (5) has a receiving groove (501) corresponding to the position of the pin (602). The side of the pin (602) facing the sliding rod (601) is connected to the receiving groove (501) through an elastic element (603).

3. A profiled tube expansion forming device according to claim 2, wherein: The end of the pin (602) away from the sliding rod (601) is rounded.

4. A device for expanding a profiled tube according to claim 3, characterized in that: The fixed slider (2) has a matching insertion hole (201) at the position of the pin (602), and the mounting bracket (4) has through holes (401) at the positions of multiple pins (602).

5. A profiled tube expansion forming device according to claim 2, wherein: The cross-section of the sliding rod (601) is hexagonal, and the movable slider (5) has a hexagonal sliding hole (502) at the position corresponding to the sliding rod (601).

6. A profiled tube expansion forming device according to claim 1, wherein: The cross-sections of the fixed slider (2) and the movable slider (5) are both T-shaped. The mounting bracket (4) has a horizontally extending T-shaped through groove (402) corresponding to the position of the fixed slider (2). The mounting bracket (4) has a longitudinally extending T-shaped groove (403) corresponding to the positions of the multiple movable sliders (5). The opening of the T-shaped groove (403) is set upward.

7. A profiled tube expansion forming device as claimed in claim 1, wherein: The drive assembly (3) includes two threaded connectors (301) fixedly mounted on the two fixed sliders (2). The worktable (1) is rotatably provided with left and right threaded rods (302) corresponding to the positions of the two threaded connectors (301). Both threaded connectors (301) are threadedly engaged with the left and right threaded rods (302). A drive unit (303) for controlling its rotation is fixedly mounted on the outer side of the worktable (1) and at one end corresponding to the left and right threaded rods (302).

8. The shaped tube expansion forming device according to claim 1, characterized in that: The limiting component (9) includes a base plate (901) fixedly installed at the middle of the top of the workbench (1), a bracket (902) fixedly installed on the rear side of the workbench (1), an electric push rod (903) fixedly installed on the top of the bracket (902), the output end of the electric push rod (903) passes through the top of the bracket (902), and a top plate (904) is fixedly installed at the end of the output end of the electric push rod (903). The top plate (904) is located inside the bracket (902), and a flexible layer (905) is fixedly installed on the opposite side of the base plate (901) and the top plate (904).

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