Aluminum pipe convex hull forming device

Abstract

The utility model discloses an aluminum pipe convex hull forming device which comprises a machine frame, a forming mechanism and a pipe fitting fixing mechanism, the forming mechanism is composed of a core rod, an inner sleeve, an outer sleeve and an air cylinder, a containing groove for containing an aluminum pipe is formed between the outer side of the inner sleeve and the inner side of the outer sleeve, and the inner sleeve comprises an elastic plate and a convex hull extrusion block. A first through hole is formed in the position, corresponding to the convex hull extrusion block, of the outer sleeve; the core rod is provided with an extrusion part for extruding the inner sleeve to enable the convex hull extrusion block to move outwards when the air cylinder is pulled back; the pipe fitting fixing mechanism is composed of a fixing plate, a pressing head and a driving motor, the fixing plate is provided with a first notch, a second notch and a protruding part, the pressing head is provided with an extrusion arm, the side, facing the protruding part, of the extrusion arm is provided with a first guide face inclining towards the protruding part from bottom to top, and a limiting block inserted into the first through hole is arranged between the extrusion arm and the protruding part; and the depth of the limiting block extending into the first through hole is controlled through the driving motor, so that the aluminum pipes of different specifications are fixed, and the problem of poor equipment universality is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fitting processing, in particular to a device for forming convex bumps on an aluminum pipe. Background Art

[0002] Currently, for reasons such as installing and positioning or limiting an aluminum pipe, many pipe fittings need to have convex bumps formed on them. Forming convex bumps on an aluminum pipe means forming one or more outward convex bumps on the outer wall of the pipe fitting.

[0003] During the process of forming convex bumps on the aluminum pipe, it is necessary to limit and fix the aluminum pipe to prevent the aluminum pipe from moving during the process of forming convex bumps. In Chinese Utility Model Patent ZL202020742017.5, upper grooves and lower grooves are respectively arranged on the upper pressing block and the lower pressing block, and the pressing block oil cylinder is used to drive the upper pressing block to move downward towards the lower pressing block until the upper pressing block abuts against the lower pressing block. The upper groove and the lower groove form a hole for accommodating the aluminum pipe to achieve clamping of the aluminum pipe. When facing aluminum pipes of different specifications, this method cannot clamp and fix aluminum pipes of different specifications, resulting in the problem of poor versatility of the equipment. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the utility model provides a device for forming convex bumps on an aluminum pipe, which can control the moving distance of the pressing head through a driving motor, and control the depth of the limiting block extending into the outer sleeve under the action of the first guiding surface, so as to clamp aluminum pipes of different specifications and solve the problem of poor versatility of the equipment.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] An aluminum tube convex hull forming device, comprising a frame, on which a forming mechanism is provided. The forming mechanism includes a mandrel, an inner sleeve and an outer sleeve sequentially sleeved outside the mandrel, and a cylinder for driving the mandrel to move back and forth. A placement groove for accommodating the aluminum tube is formed between the outer side of the inner sleeve and the inner side of the outer sleeve. The inner sleeve includes a plurality of elastic plates, and the elastic plates are provided with convex hull extrusion blocks. The outer sleeve is provided with a first through hole corresponding to the convex hull extrusion blocks, and the mandrel is provided with an extrusion part for extruding the inner sleeve when the cylinder pulls back to move the convex hull extrusion blocks outward. A pipe fitting fixing mechanism is also provided on the frame. The pipe fitting fixing mechanism includes a fixing plate, which has a first notch, a second notch and a convex part located between the first notch and the second notch. The convex part is provided with a second through hole for the outer sleeve to pass through. A pressing head and a driving motor for driving the pressing head to move up and down are provided at the upper end of the fixing plate. The pressing head has a pressing arm extending into the first notch and the second notch. A first guiding surface inclined upward from bottom to the convex part is provided on one side of the pressing arm facing the convex part. A limiting block is arranged between the pressing arm and the convex part. The limiting block is provided with an insertion part, and the convex part is provided with a third through hole corresponding to the insertion part. A spring for making the limiting block always tend to move away from the convex part is arranged between the limiting block and the convex part. The limiting block passes through the third through hole and extends into the first through hole. The limiting block is provided with a relief groove corresponding to the convex hull extrusion block. By controlling the distance of the up and down movement of the pressing head by the driving motor, the depth of the limiting block extending into the outer sleeve is controlled under the action of the first guiding surface, so as to fix aluminum tubes of different specifications and solve the problem of poor versatility of the equipment.

[0007] As a preferred solution, a second guiding surface corresponding to the first guiding surface is arranged on one surface of the limiting block in contact with the pressing arm.

[0008] As a preferred solution, an installation frame is arranged on the fixing plate, the driving motor is arranged on the installation frame, and the output end of the driving motor is connected to the pressing head through a lead screw.

[0009] As a preferred solution, the limiting block further has a limiting part. A first limiting groove is formed on one side of the limiting part facing the convex part, and a second limiting groove corresponding to the first limiting groove is formed on the convex part. Two ends of the spring are respectively located in the first limiting groove and the second limiting groove.

[0010] As a preferred solution, the extrusion part is an inverted conical head arranged on the mandrel.

[0011] As a preferred solution, the convex hull extrusion block is integrally formed at the end of the elastic plate.

[0012] As a preferred solution, a third guiding surface is arranged on the inner side of the inner sleeve close to the convex hull extrusion block.

[0013] As a preferred solution, the number of the convex hull extrusion blocks is two.

[0014] As a preferred solution, a drive mounting plate is also provided on the frame, the cylinder is installed on one side of the drive mounting plate, the inner sleeve and outer sleeve are installed on the other side of the drive mounting plate, and the core rod passes through the drive mounting plate and extends into the inner sleeve.

[0015] As a preferred solution, a control console for controlling the forming mechanism and the pipe fixing mechanism is also provided on the frame.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically:

[0017] 1. The driving motor controls the pressure head to move up and down, and the depth of the limit block extending into the outer sleeve is controlled under the action of the first guide surface, thereby fixing aluminum tubes of different specifications and improving the applicability of the equipment;

[0018] 2. The cylinder drives the mandrel when pulling back, so that the inverted cone head squeezes the inner sleeve and the convex extrusion block moves outward to form a convex bulge on the aluminum tube. Compared with the existing push-up method, it can prevent the inner sleeve and the outer sleeve from falling off under long-term work, and at the same time avoid the mandrel from generating swinging force, avoid the mandrel from breaking, and increase the service life of the equipment.

[0019] In order to more clearly explain the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the assembly structure of an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a forming mechanism and a pipe fixing mechanism of an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the exploded structure of the pipe fixing mechanism of the embodiment of the utility model;

[0023] Figure 4 yes Figure 3 A schematic diagram of the structure at the center

[0024] Figure 5 It is a schematic diagram of the exploded structure of the molding mechanism of the embodiment of the utility model;

[0025] Figure 6 It is a schematic cross-sectional structure diagram of a core rod, an inner sleeve, and an outer sleeve of an embodiment of the utility model.

[0026] Description of the accompanying drawings:

[0027] 10 - Frame; 11 - Console; 12 - Drive mounting plate;

[0028] 20 - Cylinder; 21 - Mandrel; 22 - Inverted conical head;

[0029] 23 - Inner sleeve; 24 - Third guiding surface; 25 - Bulge extrusion block;

[0030] 26 - Outer sleeve; 27 - First through - hole; 30 - Fixed plate;

[0031] 31 - First notch; 32 - Second notch; 33 - Protrusion;

[0032] 331 - Second limiting groove; 332 - Spring; 333 - Second through - hole;

[0033] 334 - Third through - hole; 34 - Mounting rack; 35 - Drive motor;

[0034] 351 - Lead screw; 36 - Pressing head; 361 - Extrusion arm;

[0035] 362 - First guiding surface; 37 - Limiting block; 371 - First limiting groove;

[0036] 372 - Second guiding surface; 373 - Relief groove. Detailed implementation mode

[0037] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0039] Such as Figure 1-6As shown in the figure, the utility model discloses an aluminum tube bulging forming device, which includes a frame 10. A forming mechanism is provided on the frame 10. The forming mechanism includes a mandrel 21, an inner sleeve 23 and an outer sleeve 26 that are sequentially sleeved outside the mandrel 21, and a cylinder 20 for driving the mandrel 21 to move back and forth. A placement groove for accommodating the aluminum tube is formed between the outside of the inner sleeve 23 and the inside of the outer sleeve 26. The inner sleeve 23 includes a plurality of elastic plates, and the elastic plates are provided with bulge extrusion blocks 25. The outer tube is provided with a first through hole 27 at the position of the bulge extrusion block 25. The mandrel 21 is provided with an extrusion part that extrudes the inner sleeve 23 to move the bulge extrusion block 25 outward when the cylinder 20 retracts. A console 11 for controlling the forming mechanism and the pipe fitting fixing mechanism is also provided on the frame 10, realizing the control of the bulging process on the frame 10, which is convenient for operation. A pipe fitting fixing mechanism is also provided on the frame 10. The pipe fitting fixing mechanism includes a fixing plate 30. The fixing plate 30 has a first notch 31, a second notch 32 and a convex part 33 located between the first notch 31 and the second notch 32. The convex part 33 is provided with a second through hole 333 for the outer sleeve 26 to pass through. A pressing head 36 and a driving motor 35 for driving the pressing head 36 to move up and down are provided at the upper end of the fixing plate 30. The pressing head 36 has a pressing arm 361 extending into the first notch 31 and the second notch 32. A first guiding surface 362 inclined upward from bottom to the convex part 33 is provided on one side of the pressing arm 361 facing the convex part 33. A limiting block 37 is provided between the pressing arm 361 and the convex part 33. The limiting block 37 is provided with an insertion part, and the convex part 37 is provided with a third through hole 334 corresponding to the insertion part. A spring 332 that always makes the limiting block 37 tend to be away from the convex part 33 is provided between the limiting block 37 and the convex part 33. The limiting block 37 passes through the third through hole 334 and extends into the first through hole 27. The limiting block 37 is provided with a relief groove 373 corresponding to the bulge extrusion block 25. By controlling the up and down movement distance of the pressing head 36 by the driving motor 35, the depth of the limiting block 37 extending into the outer sleeve 26 is controlled under the action of the first guiding surface 362, thereby realizing the fixation of aluminum tubes of different specifications and solving the problem of poor universality of the equipment.

[0040] A second guiding surface 372 corresponding to the first guiding surface 362 is provided on the surface of the limiting block 37 in contact with the pressing arm 361. An installation frame 34 is provided on the limiting block 37, and the driving motor 35 is arranged on the installation frame 34. The output end of the driving motor 35 is connected to the pressing head 36 through a lead screw 351. By providing the first guiding surface 362 and the second guiding surface 372, the stroke of the pressing head 36 pressing the limiting block 37 is made more stable, which is convenient for control.

[0041] The limiting block 37 further has a limiting portion. A first limiting groove 371 is formed on one side of the limiting portion facing the convex portion 33. A second limiting groove 331 corresponding to the first limiting groove 371 is formed on the convex portion 33. Both ends of the spring 332 are respectively located in the first limiting groove 371 and the second limiting groove 331. By providing the spring 332, the limiting block 37 has a tendency to always keep away from the convex portion 33, which is convenient for inserting the aluminum tube.

[0042] The extruding portion is an inverted conical head 22 provided on the mandrel 21; the convex bulge extruding block 25 is integrally formed at the end of the elastic plate. A third guiding surface 24 is provided on the inner side of the inner sleeve 23 close to the convex bulge extruding block 25. Since the inner sleeve 23 is composed of multiple elastic plates and the convex bulge extruding block 25 is provided on the elastic plate, there is no need to provide an elastic member for the convex bulge extruding block 25, which simplifies the structure of the equipment. The third guiding surface 24 is provided to facilitate the inverted conical head 22 to expand the inner sleeve 23.

[0043] The number of the convex bulge extruding blocks 25 is two.

[0044] A driving mounting plate 12 is further provided on the frame 10. The air cylinder 20 is mounted on one side of the driving mounting plate 12. The inner sleeve 23 and the outer sleeve 26 are mounted on the other side of the driving mounting plate 12. The mandrel 21 passes through the driving mounting plate 12 and extends into the inner part of the inner sleeve 23.

[0045] The using method of the present utility model: Insert the aluminum tube between the outer side of the inner sleeve 23 and the inner side of the outer sleeve 26 to form a placement groove for accommodating the aluminum tube. Start the driving motor 35 to make the limiting block 37 clamp and fix the aluminum tube. Start the air cylinder 20 to make the air cylinder 20 pull backward to drive the mandrel 21 so that the inverted conical head 22 extrudes the inner sleeve 23 to make the convex bulge extruding block 25 move outward to form a convex bulge on the aluminum tube, completing the convex bulge forming; Start the air cylinder 20 to reset the mandrel 21, drive the driving motor 35 to loosen the aluminum tube, and take out the aluminum tube to complete the convex bulge forming process.

[0046] In summary, the present utility model controls the up and down movement of the pressing head 36 through the driving motor 35, and controls the depth of the limiting block 37 extending into the outer sleeve 26 under the action of the first guiding surface 362, thereby realizing the fixation of aluminum tubes of different specifications and improving the applicability of the equipment; By the way that the air cylinder 20 drives the mandrel 21 when pulling back to make the inverted conical head 22 extrude the inner sleeve 23 to make the convex bulge extruding block 25 move outward to form a convex bulge on the aluminum tube, compared with the existing pushing method, it can avoid the inner sleeve 23 and the outer sleeve 26 from falling off during long-term work, and at the same time can avoid the mandrel 21 from generating a swinging force and avoid the mandrel 21 from breaking, thus prolonging the service life of the equipment.

[0047] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the actual technology of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An aluminum tube bulging forming device, characterized in that: It includes a frame, on which a forming mechanism is provided. The forming mechanism includes a mandrel, an inner sleeve and an outer sleeve that are sequentially sleeved outside the mandrel, and a cylinder for driving the mandrel to move back and forth. A placement groove for accommodating an aluminum tube is formed between the outer side of the inner sleeve and the inner side of the outer sleeve. The inner sleeve includes a plurality of elastic plates, and the elastic plates are provided with convex bulge extrusion blocks. The outer sleeve is provided with a first through hole corresponding to the convex bulge extrusion blocks, and the mandrel is provided with an extrusion part that extrudes the inner sleeve to move the convex bulge extrusion blocks outward when the cylinder retracts. A pipe fitting fixing mechanism is also provided on the frame. The pipe fitting fixing mechanism includes a fixing plate, which has a first notch, a second notch, and a convex part located between the first notch and the second notch. The convex part is provided with a second through hole for the outer sleeve to pass through. A pressing head and a driving motor for driving the pressing head to move up and down are provided at the upper end of the fixing plate. The pressing head has pressing arms extending into the first notch and the second notch. A first guiding surface inclined upward to the convex part is provided on one side of the pressing arms facing the convex part. A limiting block is provided between the pressing arms and the convex part. The limiting block is provided with an insertion part, and the convex part is provided with a third through hole corresponding to the insertion part. A spring that always has a tendency to move away from the convex part is provided between the limiting block and the convex part. The limiting block passes through the third through hole and extends into the first through hole, and the limiting block is provided with a relief groove corresponding to the convex bulge extrusion blocks.

2. The aluminum tube bulging forming device according to claim 1, characterized in that, A second guiding surface corresponding to the first guiding surface is provided on the surface of the limiting block in contact with the pressing arm.

3. An aluminum tube bulging forming device according to claim 1, characterized in that, An installation frame is provided on the fixing plate, and the driving motor is arranged on the installation frame. The output end of the driving motor is connected to the pressing head through a lead screw.

4. An aluminum tube bulging forming device according to claim 1, characterized in that, The limiting block also has a limiting part. A first limiting groove is formed on one side of the limiting part facing the convex part, and a second limiting groove corresponding to the first limiting groove is formed on the convex part. The two ends of the spring are respectively located in the first limiting groove and the second limiting groove.

5. An aluminum tube bulging forming device according to claim 1, characterized in that, The extrusion part is an inverted conical head provided on the mandrel.

6. The aluminum tube bulging forming device according to claim 1, characterized in that, The convex bulge extrusion blocks are integrally formed at the ends of the elastic plates.

7. An aluminum tube bulging forming device according to claim 6, characterized in that, A third guiding surface is provided on the inner side of the inner sleeve near the convex bulge extrusion blocks.

8. The aluminum tube bulging forming device according to claim 6, characterized in that, The number of the convex bulge extrusion blocks is two.

9. The aluminum tube bulging forming device according to claim 1, characterized in that, A driving installation plate is also provided on the frame. The cylinder is installed on one side of the driving installation plate, and the inner sleeve and the outer sleeve are installed on the other side of the driving installation plate. The mandrel passes through the driving installation plate and extends into the inner sleeve.

10. The aluminum tube convex hull forming device according to claim 1, characterized in that, A console for controlling the forming mechanism and the pipe fitting fixing mechanism is also provided on the frame.

Images