Aluminum alloy pipe drawing and forming fixture

Abstract

The invention discloses an aluminum alloy pipe drawing and forming fixture, which relates to the technical field of pipeline drawing and forming, and comprises an outer mold, an aluminum alloy pipe is inserted into the outer mold, a plurality of inner mold blocks arranged opposite to the aluminum alloy pipe are installed on the adjustment component, a sliding sleeve is slidably sleeved on the through rod, and a plurality of extension support components are installed on the sliding sleeve. The invention can adjust a plurality of inner support plates through the extended support component, so that the inner support plates support the inner wall of the aluminum alloy pipe, and the outer clamping plate can press the outer wall of the aluminum alloy pipe when the sliding ring frame moves toward the inner support plate, and the push ring pushes the U-shaped block at the same time, so that the connecting rod rotates and drives the inner support plate to move toward the outer clamping plate, so that the outer clamping plate and the inner support plate lock and fix the end of the aluminum alloy pipe, which can effectively prevent the aluminum alloy pipe from falling off during the drawing process, increase the reliability, and improve the drawing and forming quality of the aluminum alloy pipe.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline drawing and forming, in particular to a drawing and forming fixture for an aluminum alloy pipe. Background Art

[0002] Aluminum alloy pipe is a kind of pipe made of aluminum alloy material. The density of aluminum alloy is relatively low, which makes the pipe light, easy to carry and install, and reduces the construction difficulty and cost. At the same time, aluminum alloy has high strength and can withstand certain pressure and external force to ensure the stability and safety of the pipe. At the same time, aluminum alloy pipe has good corrosion resistance and thermal conductivity.

[0003] In the process of processing aluminum alloy pipes, it is necessary to use a drawing device to draw and shape the aluminum alloy pipes to obtain aluminum alloy pipe products of suitable specifications. In the current cold drawing process of aluminum pipes, each pipe needs to be manually headed before drawing, which leads to a large workload and inconvenient operation in the auxiliary process. During the drawing process of the aluminum alloy pipe, the clamping reliability of the end is insufficient, which is easy to cause detachment during pulling and directly affect the drawing efficiency and forming quality. For this reason, an aluminum alloy pipe drawing and forming fixture is provided to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an aluminum alloy pipe drawing and forming fixture to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A drawing and forming fixture for an aluminum alloy pipe comprises an outer die, an aluminum alloy pipe is inserted into the outer die, a through rod is inserted into the aluminum alloy pipe, a hand wheel is rotatably mounted on the end of the through rod, an adjustment component is mounted on the hand wheel, a plurality of inner mold blocks arranged opposite to the aluminum alloy pipe are mounted on the adjustment component, a sliding sleeve is slidably sleeved on the through rod, a guide groove is provided on the side wall of the through rod, a limiting slider slidably embedded in the guide groove is fixed on the inner wall of the sliding sleeve, and a position limiting slider slidably embedded in the guide groove is fixed between the sliding sleeve and the through rod. An elastic connection component is installed, and several extension support components are installed on the sliding sleeve. An inner support plate abutting against the inner wall of the aluminum alloy tube is installed at one end of the extension support component away from the sliding sleeve. A threaded sleeve is threadedly sleeved on the sliding sleeve, and a locking component for clamping the outer wall of the aluminum alloy tube is installed on the threaded sleeve. A pulling tube is slidably sleeved on the through rod, and a pulling docking component for connecting with the sliding sleeve is installed on the pulling tube, and a pulling rod is installed on the pulling tube.

[0007] As an improved solution of the present invention: the adjustment assembly includes two coaxially fixed threaded rods rotatably mounted on the through rod and with opposite thread rotation directions, each of the threaded rods is threadedly sleeved with a threaded sleeve block slidably connected to the through rod, and a support rod is hinged between the threaded sleeve block and the inner molded block.

[0008] As an improved solution of the present invention: the adjustment component also includes a driven gear coaxially fixed to the threaded rod, the driven gear is meshingly connected with the driving gear, and a radial slider is fixed on the outer mold and radially slidably embedded in the through rod.

[0009] As an improved solution of the present invention: the elastic connection assembly includes a ring plate I fixed on the end of the sliding sleeve, the ring plate I is slidably sleeved on the through rod, the through rod is fixedly sleeved with a ring plate II, and a spring ring I sleeved on the through rod is fixedly connected between the ring plate II and the ring plate I.

[0010] As an improved solution of the present invention: the extension support assembly includes two parallel and equal-length connecting rods, the two ends of the connecting rods are respectively hinged on the inner support plate and the sliding sleeve, a guide sleeve block is slidably installed on the sliding sleeve, and a driving rod is hinged between the guide sleeve block and the connecting rod.

[0011] As an improved solution of the present invention: the extension support assembly also includes a guide rod fixed on the sliding sleeve, the guide sleeve block is slidably sleeved on the guide rod, and a spring ring II sleeved on the guide rod is fixed between the guide sleeve block and the sliding sleeve.

[0012] As an improved solution of the present invention: the locking assembly includes a sliding ring frame sleeved on the sliding sleeve, the threaded sleeve is rotatably mounted on the sliding ring frame, the inner wall of the sliding ring frame is fixed with a guide bar slidably embedded in the guide groove, and the sliding ring frame is fixed with a plurality of outer clamping plates corresponding to the inner support plates one by one, and the outer clamping plates are provided with wedge surfaces arranged opposite to the aluminum alloy tube.

[0013] As an improved solution of the present invention: the locking assembly further comprises a push ring fixed on the end surface of the sliding ring frame, and a U-shaped clamping block corresponding to the axial direction of the push ring is fixed on the guide sleeve block.

[0014] As an improved solution of the present invention: the pulling docking assembly includes an extension ring frame fixedly sleeved on the end of the pulling tube, and two oppositely arranged locking studs are threadedly connected to the extension ring frame, and a locking wheel is fixed to the end of the locking stud, and a connecting threaded hole adapted to the thread of the locking stud is formed on the side wall of the sliding sleeve, and a positioning block slidably embedded in the sliding sleeve is fixed on the pulling tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can adjust multiple inner support plates through the extended support assembly, so that the inner support plates support the inner wall of the aluminum alloy tube, and when the sliding ring frame moves toward the inner support plate, the outer clamping plate can press the outer wall of the aluminum alloy tube, and at the same time, the push ring pushes the U-shaped block, so that the connecting rod rotates and drives the inner support plate to move toward the outer clamping plate, so that the outer clamping plate and the inner support plate lock and fix the end of the aluminum alloy tube, which can effectively prevent the aluminum alloy tube from falling off during the drawing process, increase reliability, and improve the drawing quality of the aluminum alloy tube.

[0017] 2. The present invention can drive the driving gear to rotate by turning the hand wheel, and the driving gear drives multiple driven gears to rotate synchronously, so that the threaded rod drives the threaded sleeve to slide and drives the support rod to move, thereby realizing the radial movement of the inner mold block relative to the through rod, realizing adaptive adjustment according to the wall thickness of the aluminum alloy tube drawing and forming, and greatly improving the drawing and forming effect of the aluminum alloy tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the present invention after partial sectioning;

[0020] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of the middle A part;

[0021] Figure 4 It is a schematic diagram of the connection between the elastic adjustment component and the inner mold block in the present invention;

[0022] Figure 5 It is a schematic diagram of the connection of the sliding sleeve, the inner support plate and the ring plate I in the present invention;

[0023] Figure 6 It is a schematic diagram of the connection of components such as the sliding sleeve, the sliding ring frame and the inner support plate in the present invention;

[0024] Figure 7 It is a schematic diagram of the connection of the threaded sleeve, the sliding ring frame and the thrust ring in the present invention;

[0025] Figure 8 It is a structural schematic diagram of the extension support assembly in the present invention;

[0026] Fig. 9 For the present invention Figure 8 Schematic diagram from a certain perspective;

[0027] Fig.10It is a schematic diagram of the connection of the pulling tube, the extension ring frame and the sliding sleeve and other components in the present invention;

[0028] Fig.11 It is a schematic diagram of the connection between the pulling docking assembly and the sliding sleeve in the present invention.

[0029] In the figure: 1-external mold, 2-aluminum alloy tube, 3-through rod, 4-sliding ring frame, 5-external clamping plate, 6-sliding sleeve, 7-pulling tube, 8-threaded sleeve, 9-ring plate I, 10-spring ring I, 11-ring plate II, 12-inner support plate, 13-inner mold block, 14-hand wheel, 15-driven gear, 16-driving gear, 17-radial slider, 18-support rod, 19-threaded sleeve block , 20-threaded rod, 21-connecting threaded hole, 22-U-shaped block, 23-connecting rod, 24-guide bar block, 25-driving rod, 26-guide groove, 27-wedge surface, 28-thrust ring, 29-limiting slider, 30-guide sleeve block, 31-spring ring II, 32-guide rod, 33-extension sleeve frame, 34-positioning block, 35-locking stud, 36-locking wheel, 37-pulling rod. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments:

[0031] Example 1

[0032] Please see attached Figure 1 -Attached Fig.11 A drawing and forming fixture for an aluminum alloy pipe comprises an outer mold 1, an aluminum alloy pipe 2 is inserted into the outer mold 1, a through rod 3 is inserted into the aluminum alloy pipe 2, a hand wheel 14 is rotatably installed at the end of the through rod 3, an adjustment component is installed on the hand wheel 14, a plurality of inner mold blocks 13 arranged opposite to the aluminum alloy pipe 2 are installed on the adjustment component, a sliding sleeve 6 is slidably sleeved on the through rod 3, a guide groove 26 is opened on the side wall of the through rod 3, a limit slider 29 slidably embedded in the guide groove 26 is fixed on the inner wall of the sliding sleeve 6, and the sliding sleeve An elastic connection component is installed between 6 and the through rod 3, a plurality of extension support components are installed on the sliding sleeve 6, an inner support plate 12 abutting against the inner wall of the aluminum alloy tube 2 is installed on the end of the extension support component away from the sliding sleeve 6, a threaded sleeve 8 is threadedly sleeved on the sliding sleeve 6, a locking component for clamping the outer wall of the aluminum alloy tube 2 is installed on the threaded sleeve 8, a pulling tube 7 is slidably sleeved on the through rod 3, a pulling docking component for connecting with the sliding sleeve 6 is installed on the pulling tube 7, and a pulling rod 37 is installed on the pulling tube 7.

[0033] The adjustment assembly of the device includes two threaded rods 20 which are coaxially fixed and have opposite threaded directions and are rotatably mounted on the through rod 3. A threaded sleeve block 19 which is slidably connected to the through rod 3 is threadedly sleeved on each threaded rod 20. A support rod 18 is hinged between the threaded sleeve block 19 and the inner mold block 13. The adjustment assembly also includes a driven gear 15 which is coaxially fixed to the threaded rod 20. The driven gear 15 is meshedly connected to the driving gear 16. A radial slider 17 which is radially slidably embedded in the through rod 3 is fixed on the outer mold 1.

[0034] Through the above arrangement, screwing the handwheel 14 can drive the driving gear 16 to rotate. At this time, the driving gear 16 drives multiple driven gears 15 to rotate synchronously. Each driven gear 15 drives the threaded rod 20 connected thereto to rotate, and the threaded rod 20 drives the threaded sleeve 19 to move, so that the threaded sleeve 19 drives the inner mold block 13 to move relative to the through rod 3 through the support rod 18, thereby achieving the effect of adjusting the distance between the inner mold block 13 and the inner wall of the outer mold 1, that is, achieving flexible adjustment of the wall thickness of the aluminum alloy tube 2 after drawing and forming, the adjustment process is easy to operate, and the drawing and forming quality and efficiency of the aluminum alloy tube 2 are significantly improved.

[0035] The elastic connection component of the device includes a ring plate I9 fixed to the end of the sliding sleeve 6, the ring plate I9 is ​​slidably sleeved on the through rod 3, a ring plate II11 is fixedly sleeved on the through rod 3, and a spring ring I10 sleeved on the through rod 3 is fixedly connected between the ring plate II11 and the ring plate I9.

[0036] When the aluminum alloy tube 2 is pulled, the left end of the through rod 3 is pulled by an external pulling device, so that the aluminum alloy tube 2 is deformed after passing through the outer mold 1 under the drive of the extension support assembly, and the inner mold block 13 moves toward the outer mold 1, and the outer mold 1 and the inner mold block 13 clamp the aluminum alloy tube 2. Then, the external pulling device stops pulling the through rod 3. At this time, the position of the through rod 3 is fixed and connected to the sliding sleeve 6 through a pulling docking assembly. The pulling rod 37 is used to pull the pulling tube 7 to realize the movement of the sliding sleeve 6, and then the aluminum alloy tube 2 is pulled by the extension support assembly to realize the pulling operation.

[0037] Specifically, the extension support assembly includes two parallel and equal-length connecting rods 23, the two ends of which are respectively hinged on the inner support plate 12 and the sliding sleeve 6, a guide sleeve block 30 is slidably mounted on the sliding sleeve 6, and a driving rod 25 is hinged between the guide sleeve block 30 and the connecting rod 23. The extension support assembly also includes a guide rod 32 fixed on the sliding sleeve 6, the guide sleeve block 30 is slidably sleeved on the guide rod 32, and a spring ring II31 sleeved on the guide rod 32 is fixed between the guide sleeve block 30 and the sliding sleeve 6.

[0038] By adjusting the guide sleeve 30 to slide relative to the guide rod 32, the guide sleeve 30 pushes the connecting rod 23 through the driving rod 25, and the two connecting rods 23 swing synchronously and drive the inner support plate 12 to translate toward the inner wall of the aluminum alloy tube 2 until multiple inner support plates 12 support the aluminum alloy tube 2 from the inside to the outside, thereby locking the aluminum alloy tube 2, which greatly ensures the stability of the drawing process of the aluminum alloy tube 2 and effectively improves the drawing quality.

[0039] Example 2

[0040] Please see attached Figure 1 -Attached Fig.11 On the basis of Example 1, in addition, the locking assembly of the device includes a sliding ring frame 4 sleeved on the sliding sleeve 6, the threaded sleeve 8 is rotatably mounted on the sliding ring frame 4, the inner wall of the sliding ring frame 4 is fixed with a guide bar 24 slidably embedded in the guide groove 26, and a plurality of outer clamping plates 5 corresponding to the inner support plates 12 are fixed on the sliding ring frame 4, and a wedge surface 27 arranged opposite to the aluminum alloy tube 2 is opened on the outer clamping plate 5.

[0041] In addition, the locking assembly further comprises a push ring 28 fixed to the end surface of the sliding ring frame 4 , and a U-shaped clamping block 22 corresponding to the axial direction of the push ring 28 is fixed to the guide sleeve block 30 .

[0042] Through the above arrangement, the sliding ring frame 4 is slid along the sliding sleeve 6 toward the inner support plate 12 until the set threaded sleeve 8 is docked with the external thread of the sliding sleeve 6, and the threaded sleeve 8 is screwed to make the threaded sleeve 8 rotate relative to the sliding sleeve 6. The threaded sleeve 8 drives the sliding ring frame 4 and the outer clamping plate 5 thereon to move toward the end of the aluminum alloy tube 2. Finally, the aluminum alloy tube 2 is deformed after sliding against the wedge surface 27 and is clamped and fixed by the outer clamping plate 5.

[0043] During this process, the push ring 28 moves with the sliding ring frame 4 and is inserted into the U-shaped block 22. The U-shaped block 22 is pushed by the sliding ring frame 4 and drives the guide sleeve 30 to move. At this time, the guide sleeve 30 drives the inner support plate 12 to move through the driving rod 25, so that the inner support plate 12 supports and abuts the aluminum alloy tube 2 from the inside to the outside. Combined with the outer clamping plate 5 clamping the aluminum alloy tube 2 from the right outside to the inside, the aluminum alloy tube 2 is firmly locked and clamped by the inner support plate 12 and the outer clamping plate 5, which greatly improves the stability of the pulling process of the end of the aluminum alloy tube 2, and the drawing quality of the aluminum alloy tube 2 is significantly improved.

[0044] In addition, the pulling docking assembly of the present device includes an extension ring frame 33 fixedly sleeved on the end of the pulling tube 7, and two oppositely arranged locking studs 35 are threadedly connected to the extension ring frame 33. A locking wheel 36 is fixed to the end of the locking stud 35. A connecting threaded hole 21 threadedly adapted to the locking stud 35 is provided on the side wall of the sliding sleeve 6, and a positioning block 34 slidably embedded in the sliding sleeve 6 is fixed on the pulling tube 7.

[0045] By sliding the pulling tube 7 to move it toward the sliding sleeve 6, the positioning block 34 is clamped in the guide groove 26 to adjust the angle of the pulling tube 7, ensuring that when the pulling tube 7 and the sliding sleeve 6 are docked, the extension ring frame 33 is sleeved on the sliding sleeve 6, and the locking stud 35 on the extension ring frame 33 is opposite to the connecting threaded hole 21. Then, the locking wheel 36 is rotated to drive the locking stud 35 to rotate, so that the locking stud 35 can be threadedly connected with the sliding sleeve 6, thereby realizing the rapid docking of the pulling tube 7 and the sliding sleeve 6, and the aluminum alloy tube 2 can be drawn and formed by pulling the pulling rod 37 through an external pulling device.

[0046] To sum up, the present invention can adjust multiple inner support plates 12 through the extended support assembly, so that the inner support plate 12 supports the inner wall of the aluminum alloy tube 2, and when the sliding ring frame 4 moves toward the inner support plate 12, the outer clamping plate 5 can press the outer wall of the aluminum alloy tube 2, and at the same time, the push ring 28 pushes the U-shaped block 22, so that the connecting rod 23 rotates and drives the inner support plate 12 to move toward the outer clamping plate 5, so that the outer clamping plate 5 and the inner support plate 12 lock and fix the end of the aluminum alloy tube 2, which can effectively prevent the aluminum alloy tube 2 from falling off during the drawing process, increase reliability, and improve the drawing quality of the aluminum alloy tube 2. The present invention can drive the driving gear 16 to rotate by screwing the hand wheel 14, and the driving gear 16 drives multiple driven gears 15 to rotate synchronously, so that the threaded rod 20 drives the threaded sleeve block 19 to slide and drives the support rod 18 to move, thereby realizing the radial movement of the inner mold block 13 relative to the through rod 3, realizing adaptive adjustment according to the wall thickness of the aluminum alloy tube 2 to be drawn, and greatly improving the drawing effect of the aluminum alloy tube 2.

[0047] It should be noted that although this specification is described according to the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above embodiments only express the preferred implementation methods of the technical solution, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention of the technical solution. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations, improvements and substitutions can be made, which all belong to the protection scope of the present technical solution. The protection scope of the invention of the present technical solution shall be based on the attached claims.

Claims

1. A drawing and forming fixture for an aluminum alloy pipe, comprising an outer die (1), an aluminum alloy pipe (2) passing through the outer die (1), a through rod (3) passing through the interior of the aluminum alloy pipe (2), characterized in that: A hand wheel (14) is rotatably mounted on the end of the through rod (3), an adjustment component is mounted on the hand wheel (14), and a plurality of inner molded blocks (13) arranged opposite to the aluminum alloy tube (2) are mounted on the adjustment component. A sliding sleeve (6) is slidably sleeved on the through rod (3), and an elastic connection component is mounted between the sliding sleeve (6) and the through rod (3). A plurality of extension support components are mounted on the sliding sleeve (6), and an inner support plate (12) abutting against the inner wall of the aluminum alloy tube (2) is mounted on one end of the extension support component away from the sliding sleeve (6). A threaded sleeve (12) is threadedly sleeved on the sliding sleeve (6). A threaded sleeve (8), wherein a locking assembly for clamping the outer wall of the aluminum alloy tube (2) is installed on the threaded sleeve (8), a pulling tube (7) is slidably sleeved on the through rod (3), a pulling docking assembly for connecting with the sliding sleeve (6) is installed on the pulling tube (7), a pulling rod (37) is installed on the pulling tube (7), and the adjustment assembly comprises two coaxially fixed threaded rods (20) rotatably mounted on the through rod (3) and having opposite thread rotation directions, each of the threaded rods (20) is threadedly sleeved with a threaded sleeve block (19) slidably connected to the through rod (3), and the threaded sleeve block (19) ) and the inner molded block (13) are hingedly connected with a support rod (18), the elastic connection component includes a ring plate I (9) fixed to the end of the sliding sleeve (6), the ring plate I (9) is slidably sleeved on the through rod (3), the through rod (3) is fixedly sleeved with a ring plate II (11), and a spring ring I (10) sleeved on the through rod (3) is fixedly connected between the ring plate II (11) and the ring plate I (9), the extension support component includes two parallel and equal-length connecting rods (23), the two ends of the connecting rod (23) are respectively hinged on the inner support plate (12) and the sliding sleeve (6), and the sliding sleeve (6) is slidably sleeved on the through rod (3). A guide sleeve block (30) is movably installed, and a driving rod (25) is hinged between the guide sleeve block (30) and the connecting rod (23). The pulling and docking assembly includes an extension ring frame (33) fixedly sleeved on the end of the pulling tube (7), and two oppositely arranged locking studs (35) are threadedly connected to the extension ring frame (33). The ends of the locking studs (35) are fixed with locking wheels (36). The side wall of the sliding sleeve (6) is provided with a connecting threaded hole (21) threadedly adapted to the locking studs (35), and a positioning block (34) slidably embedded in the sliding sleeve (6) is fixed on the pulling tube (7).

2. The aluminum alloy pipe drawing and forming fixture according to claim 1, characterized in that: The adjustment assembly further comprises a driven gear (15) coaxially fixed to the threaded rod (20), and a radial sliding block (17) radially slidably embedded in the through rod (3) is fixed on the inner molded block (13).

3. The aluminum alloy pipe drawing and forming fixture according to claim 1, characterized in that: The extension support assembly further comprises a guide rod (32) fixed on the sliding sleeve (6), the guide sleeve block (30) is slidably sleeved on the guide rod (32), and a spring ring II (31) sleeved on the guide rod (32) is fixed between the guide sleeve block (30) and the sliding sleeve (6).

4. The aluminum alloy pipe drawing and forming fixture according to claim 1, characterized in that: The locking assembly comprises a sliding ring frame (4) sleeved on the sliding sleeve (6), the threaded sleeve (8) being rotatably mounted on the sliding ring frame (4), a plurality of outer clamping plates (5) corresponding one to one with the inner support plates (12) being fixed on the sliding ring frame (4), and a wedge surface (27) being arranged opposite to the aluminum alloy tube (2) being formed on the outer clamping plate (5).

5. The aluminum alloy pipe drawing and forming fixture according to claim 4, characterized in that: The locking assembly also includes a push ring (28) fixed to the end surface of the sliding ring frame (4), and a U-shaped clamping block (22) axially corresponding to the push ring (28) is fixed to the guide sleeve block (30).

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