A tube expander and fixing device thereof

Abstract

The present application belongs to the technical field of tube expansion equipment, and provides a tube expander and a fixing device thereof, wherein the fixing device includes a bracket and a plurality of fixing rows for fixing workpieces in batches, wherein the plurality of fixing rows are stacked on the bracket; each fixing row is respectively connected to a driving mechanism for driving the fixing row to move toward the tube expansion device, so as to adjust the spacing between the fixing row and the tube expansion device to adapt to the size of different workpieces. The fixing device of the present application includes a plurality of stacked fixing rows, which are used to fix workpieces. When workpieces of different sizes need to be processed, the workpieces of different sizes are fixed to the corresponding number of layers of fixing rows, and then the positions of the fixing rows are adjusted by the corresponding driving mechanism so that the pipe openings of workpieces of different sizes can also be located on the same horizontal plane, which facilitates the tube expander to process workpieces of different sizes at the same time, thereby improving the working efficiency of the tube expander.

Description

Technical Field

[0001] The present application belongs to the technical field of tube expansion equipment, and in particular relates to a tube expander and a fixing device thereof. Background Art

[0002] The tube expander is mainly used as a special expansion equipment for the expansion connection of tubes and tube sheets in the manufacturing of equipment such as heat exchangers, condensers, and high-pressure heaters. Most of the existing tube expanders are vertical. Due to the height limit of the factory building, the vertical tube expander cannot be too high, which limits the length of the workpiece to be processed. In addition, large workpieces are not easy to load. Compared with the vertical tube expander, the tube expander has lower requirements on the factory building and can process longer and larger workpieces.

[0003] Commonly used tube expanders are generally equipped with a fixing device and a tube expanding device. Among them, the fixing device is used to fix workpieces in batches so that the pipe openings on each batch of fixed workpieces can be kept on the same horizontal plane, which is convenient for alignment with the tube expanding parts on the tube expanding device for tube expansion processing. The fixing device of the prior art is not adjustable and cannot adapt to workpieces of different sizes. It can only be installed and fixed on workpieces of specific sizes. Therefore, after processing a workpiece of one specification, it is often necessary to adjust or replace the components of the fixing device to meet the fixing requirements of workpieces of different sizes. It can be seen that the fixing device on the tube expander of the prior art has low adaptability and cumbersome adjustment operations, which seriously reduces the production efficiency of the tube expander. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a tube expander and a fixing device thereof, so as to solve the technical problem in the prior art that the tube expander cannot adapt to workpieces of different sizes for fixing and processing.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is: to provide a fixing device of a tube expander, which is arranged on the tube expander side by side with the tube expanding device of the tube expander, and the fixing device includes a bracket and a plurality of fixing rows for fixing workpieces in batches, and the plurality of fixing rows are stacked on the bracket; each of the fixing rows is respectively connected to a driving mechanism that drives the fixing row to move toward the tube expanding device, so as to adjust the distance between the fixing row and the tube expanding device to adapt to the sizes of different workpieces.

[0006] The beneficial effect of the fixing device of the tube expander provided by the present application is that, compared with the prior art, the fixing device of the tube expander of the present application includes a plurality of stacked fixing rows, the fixing rows are used to fix the workpieces, and each of the fixing rows is respectively connected to a driving mechanism for driving the fixing row to move toward the tube expansion device. When it is necessary to expand workpieces of different sizes, the workpieces of different sizes are fixed to the fixing rows of the corresponding number of layers, and then the positions of the fixing rows are adjusted by the corresponding driving mechanisms so that the pipe openings of workpieces of different sizes can also be located on the same horizontal plane, which facilitates the tube expander to process workpieces of different sizes at the same time, thereby improving the working efficiency of the tube expander.

[0007] Improvements have been made to the structure of the fixed row. There are three fixed rows, which are, from top to bottom, an upper fixed row, a middle fixed row, and a lower fixed row. The upper fixed row is connected to a first driver that drives the upper fixed row to move toward the tube expansion device, the middle fixed row is connected to a second driver that drives the middle fixed row to move toward the tube expansion device, and the lower fixed row is connected to a third driver that drives the lower fixed row to move toward the tube expansion device. This allows for simultaneous processing of workpieces of three different sizes, and the three-layer fixed row structure is stable and reliable, making it convenient for production and processing.

[0008] Furthermore, the fixing device includes a bracket and a mounting base arranged on the bracket, the upper surface of the mounting base is provided with a first slider, the upper fixed row is provided with a first slide rail matching the position of the first slider, the lower surface of the mounting base is provided with a second slider, the lower fixed row is provided with a second slide rail matching the position of the second slider, the middle fixed row is connected to the output end of the second driver, the second driver is fixed on the mounting base, the upper fixed row, the middle fixed row and the lower fixed row can all move relative to the mounting base, and the position of the fixed row can be adjusted by driving the corresponding driver, and the overall structure is stable and reliable.

[0009] Furthermore, the fixing device includes a mounting base arranged on the bracket, the upper surface of the mounting base is provided with a first slider, the upper fixed row is provided with a first slide rail matching the position of the first slider, the lower surface of the mounting base is provided with a second slider, the middle fixed row is arranged on the mounting base, the second driver is fixed on the bracket, and the output end of the second driver is connected to the mounting base. The structure is simple, the middle fixed row is arranged on the mounting base, and the mounting base is connected to the bracket through the second driver. The second driver drives the mounting base to move, which can drive the middle fixed row to extend and retract. The structure is simple, and the production cost of the fixing device is reduced.

[0010] Improvements are made to the structures of the first slider and the first slide rail. There are two first sliders and two first slide rails. The two first sliders are respectively arranged on both sides of the mounting base. The two first slide rails match the positions of the two first sliders, which can improve the smoothness of the upper fixed row during movement and prevent the upper fixed row from derailing during movement.

[0011] Improvements are made to the structures of the second slider and the second slide rail. There are two second sliders and two second slide rails. The two second sliders are respectively arranged on both sides of the mounting base. The two second slide rails match the positions of the two second sliders, which can improve the smoothness of the movement of the lower fixed row and prevent the lower fixed row from derailing when moving.

[0012] Improvements are made to the structures of the upper fixed row, the middle fixed row and the lower fixed row. The upper fixed row, the middle fixed row and the lower fixed row are all provided with fixed plates, and a number of mounting holes for installing U-supports are opened on the fixed plates. The U-supports can fix workpieces, and a corresponding number of mounting holes can be opened on the fixed plates according to different needs.

[0013] Improvements are made to the structures of the first driver, the second driver and the third driver. The first driver, the second driver and the third driver are all screw rod structures, and the screw rod structure includes a screw rod and a motor that drives the screw rod to move. The screw rod structure moves smoothly, which facilitates precise adjustment of the positions of the upper fixed row, the middle fixed row and the lower fixed row, so that the pipe openings of workpieces of various sizes can be kept on the same horizontal plane.

[0014] The present application also provides a tube expander, comprising a mounting frame, a workbench for placing a workpiece, and a tube expanding device for expanding the workpiece, and also comprises the fixing device of the tube expander described above, wherein the fixing device, the workbench, and the tube expanding device are sequentially arranged on the mounting frame.

[0015] Furthermore, the fixing device is provided with a fourth driver for driving the fixing device to move toward the tube expanding device. The fourth driver is generally a screw structure, which facilitates bringing the workpiece close to the tube expanding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1Schematic diagram of the structure of the fixing device of the tube expander provided in the embodiment of the present application Figure 1 ;

[0018] Figure 2 A schematic structural diagram of a tube expander provided in an embodiment of the present application;

[0019] Figure 3 Schematic diagram of the structure of the fixing device of the tube expander provided in the embodiment of the present application Figure 2 ;

[0020] Figure 4 Schematic diagram of the structure of the fixing device of the tube expander provided in the embodiment of the present application Figure 3 ;

[0021] Figure 5 Schematic diagram of the structure of the fixing device of the tube expander provided in the embodiment of the present application Figure 4 ;

[0022] Figure 6 for Figure 1 A partial enlarged view of point A in the middle;

[0023] Figure 7 for Figure 3 A partial enlarged view of point B in the middle.

[0024] Among them, the reference numerals in the figures are:

[0025] 100-Fixtures;

[0026] 1-Fixed row;

[0027] 11-Upper fixed row;

[0028] 111-first driver;

[0029] 112-first slide rail;

[0030] 12-middle fixed row;

[0031] 121-second drive;

[0032] 13-Lower fixed row;

[0033] 131-Third Drive;

[0034] 132-second slide rail;

[0035] 2- Bracket;

[0036] 21- Install the base plate;

[0037] 211-first slider;

[0038] 212- second slider;

[0039] 3-Fixed plate;

[0040] 31-Mounting hole;

[0041] 32-U support;

[0042] 200-mounting frame;

[0043] 4- fourth drive;

[0044] 300- workbench;

[0045] 400-Tube expansion device. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application 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 this application and are not intended to limit this application.

[0047] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0048] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 a limitation on this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0050] The tube expander provided in the embodiment of the present application is now described. Figure 2 and Figure 6, including a mounting frame 200, a workbench 300 for placing a workpiece, and an expanding device 400 for expanding the workpiece, and also including a fixing device 100 of the tube expander. The fixing device 100, the workbench 300 and the tube expanding device 400 are sequentially arranged on the mounting frame 200; the mounting frame 200 is provided with a fourth driver 4 for driving the fixing device 100 to move toward the tube expanding device 400. The fourth driver 4 is generally a screw structure, which generally includes a screw and a motor that drives the screw to move. The screw is an ideal structure for converting rotary motion into linear motion, or converting linear motion into rotary motion, so that the fixing device 100 can move smoothly and reliably, thereby improving the stability of the overall structure of the tube expander.

[0051] Please also refer to Figure 1 、 Figure 2 and Figure 3 The fixing device 100 is arranged side by side with the tube expanding device 400 of the tube expander on the tube expander. The fixing device 100 includes a bracket 2 and a plurality of fixing rows 1 for fixing workpieces in batches. The plurality of fixing rows 1 are stacked on the bracket 2; each fixing row 1 is connected to a driving mechanism that drives the fixing row 1 to move toward the tube expanding device 400 to adjust the distance between the fixing row 1 and the tube expanding device 400 to adapt to the sizes of different workpieces.

[0052] Compared with the prior art, the fixing device of the tube expander provided in the present application includes a plurality of stacked fixing rows 1, which are used to fix the workpieces, and each fixing row 1 is provided with a driving mechanism for driving the fixing row 1 to move toward the tube expander 400. When workpieces of different sizes need to be processed, the workpieces of different sizes are fixed to the corresponding number of layers of fixing rows 1, and then the positions of the fixing rows 1 are adjusted by the corresponding driving mechanisms so that the pipe openings of workpieces of different sizes can also be located on the same horizontal plane, which facilitates the tube expander to process workpieces of different sizes at the same time, expands the application range of the fixing rows 1, and improves the working efficiency of the tube expander.

[0053] In the embodiments of this application, please refer to Figure 3 、 Figure 4 and Figure 5The fixed row 1 has three rows, which are an upper fixed row 11, a middle fixed row 12 and a lower fixed row 13 from top to bottom. The upper fixed row 11 is connected to a first driver 111 that drives the upper fixed row 11 to move toward the tube expansion device 400. The middle fixed row 12 is connected to a second driver 121 that drives the middle fixed row 12 to move toward the tube expansion device 400. The lower fixed row 13 is connected to a third driver 131 that drives the lower fixed row 13 to move toward the tube expansion device 400. The fixed row 11, the middle fixed row 12 and the lower fixed row 13 are driven by the first driver 111, the second driver 121 and the third driver 131 respectively, that is, the upper fixed row 11, the middle fixed row 12 and the lower fixed row 13 can move independently. The positions of the upper fixed row 11, the middle fixed row 12 and the lower fixed row 13 are adjusted according to actual production needs, so that three workpieces of different sizes can be processed at the same time. The three-layer fixed row structure is stable and reliable, convenient for production and processing, and improves the applicability of the fixing device.

[0054] In one embodiment of this application, please refer to Figure 3 、 Figure 4 and Figure 5 The fixing device 100 includes a bracket 2 and a mounting base 21 arranged on the bracket 2. A first slider 211 is provided on the upper surface of the mounting base 21. The upper fixed row 11 is provided with a first slide rail 112 that matches the position of the first slider 211. A second slider 212 is provided on the lower surface of the mounting base 21. The lower fixed row 13 is provided with a second slide rail 132 that matches the position of the second slider 212. The middle fixed row 12 is connected to the output end of the second driver 121. The second driver 121 is fixed on the mounting base 21. The upper fixed row 11, the middle fixed row 12 and the lower fixed row 13 can all move relative to the mounting base 21. By driving the corresponding drivers, the position of the fixed row can be adjusted, and the overall structure is stable and reliable.

[0055] In another embodiment of the present application, not shown in the figure, the fixing device 100 includes a bracket 2 and a mounting substrate 21 arranged on the bracket 2, the upper surface of the mounting substrate 21 is provided with a first slider 211, the upper fixed row 11 is provided with a first slide rail 112 matching the position of the first slider 211, the lower surface of the mounting substrate 21 is provided with a second slider 212, the middle fixed row 12 is provided on the mounting substrate 21, the second driver 121 is fixed on the bracket 2, and the output end of the second driver 121 is connected to the mounting substrate 21, the structure is simple, the middle fixed row 12 is provided on the mounting substrate 21, the mounting substrate 21 is connected to the bracket 2 through the second driver 121, the second driver 121 drives the mounting substrate 21 to move, which can drive the middle fixed row 12 to extend and retract, the structure is simple, and the production cost of the fixing device 100 is reduced.

[0056] In the embodiments of this application, please refer to Figure 3 、 Figure 4 and Figure 5 There are two first sliders 211 and two first slide rails 112. The two first sliders 211 are respectively arranged on both sides of the mounting substrate 21. The positions of the two first slide rails 112 match the positions of the two first sliders 211, which can improve the smoothness of the upper fixed row 11 when moving and prevent the upper fixed row 11 from derailing when moving.

[0057] In the embodiments of this application, please refer to Figure 3 、 Figure 4 and Figure 5 There are two second sliders 212 and two second slide rails 132. The two second sliders 212 are respectively arranged on both sides of the mounting base 21. The positions of the two second slide rails 132 match the positions of the two second sliders 212, which can improve the smoothness of the movement of the lower fixed row 13 and prevent the lower fixed row 13 from derailing when moving.

[0058] In the examples of this application, please refer to Figure 7 The upper fixed row 11, the middle fixed row 12 and the lower fixed row 13 are all provided with a fixed plate 3, and a plurality of mounting holes 31 for mounting U-supports 32 are opened on the fixed plate 3. The U-supports 32 can fix the workpiece. According to different needs, a corresponding number of mounting holes 31 can be opened on the fixed plate 3.

[0059] In the embodiment of the present application, the first driver 111, the second driver 121 and the third driver 131 are all screw structures, which include a screw and a motor that drives the screw to move. The screw is an ideal structure for converting rotary motion into linear motion, or converting linear motion into rotary motion. The screw moves smoothly, which facilitates precise adjustment of the positions of the upper fixed row 11, the middle fixed row 12 and the lower fixed row 13, so that the pipe openings of workpieces of various sizes can be maintained on the same horizontal plane.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A fixing device for a tube expander, arranged on the tube expander side by side with the tube expanding device on the tube expander, characterized in that: The fixing device includes a bracket and a plurality of fixing rows for fixing workpieces in batches, wherein the plurality of fixing rows are stacked on the bracket; each fixing row is connected to a driving mechanism for driving the fixing row toward the tube expansion device to adjust the distance between the fixing row and the tube expansion device to adapt to different workpiece sizes; The fixing row comprises three, and the three fixing rows are, from top to bottom, an upper fixing row, a middle fixing row and a lower fixing row, the upper fixing row is connected to a first driver that drives the upper fixing row to move toward the tube expansion device, the middle fixing row is connected to a second driver that drives the middle fixing row to move toward the tube expansion device, and the lower fixing row is connected to a third driver that drives the lower fixing row to move toward the tube expansion device; the fixing device comprises a mounting base arranged on the bracket, the upper surface of the mounting base is provided with a first slider, the upper fixing row is provided with a first slide rail that matches the position of the first slider, the lower surface of the mounting base is provided with a second slider, and the lower fixing row is provided with a second slide rail that matches the position of the second slider, the middle fixing row is connected to an output end of the second driver, the second driver is fixed to the mounting base, and the upper fixing row, the middle fixing row and the lower fixing row can all move relative to the mounting base by driving the corresponding drivers; Alternatively, the middle-layer fixing row is arranged on the mounting substrate, the second driver is fixed on the bracket, and the output end of the second driver is connected to the mounting substrate; The upper fixed row, the middle fixed row and the lower fixed row are all provided with a fixing plate, and the fixing plate is provided with a plurality of mounting holes for mounting U-brackets, and the U-brackets fix the workpieces; Wherein, the first driver, the second driver and the third driver are all screw rod structures.

2. The fixing device of the tube expander according to claim 1, characterized in that: There are two of each of the first sliding blocks and the first sliding rails. The two first sliding blocks are respectively arranged on both sides of the mounting base plate, and the positions of the two first sliding rails match those of the two first sliding blocks.

3. The fixing device of the tube expander according to claim 1, characterized in that: There are two second sliders and two second slide rails. The two second sliders are respectively arranged on both sides of the mounting base plate. The positions of the two second slide rails match those of the two second sliders.

4. The fixing device for a tube expander according to claim 1, characterized in that: The screw rod structure includes a screw rod and a motor for driving the screw rod to move.

5. A tube expander comprising a mounting frame, a workbench for placing a workpiece, and an expanding device for expanding the workpiece, characterized in that: It also includes a fixing device of the tube expander according to any one of claims 1 to 4, wherein the fixing device, the workbench and the tube expanding device are sequentially arranged on the mounting frame.

6. The tube expander according to claim 5, characterized in that: The mounting frame is provided with a fourth driver for driving the fixing device to move toward the tube expanding device.

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