Edge cutting device for aluminum alloy elbow

Abstract

The utility model relates to the technical field of aluminum alloy elbow trimming, in particular to an aluminum alloy elbow trimming device which comprises a workbench, a supporting plate vertically arranged on the workbench, a supporting arm arranged at the top of the supporting plate, a first motor arranged on the supporting arm and a saw blade arranged on a driving shaft of the first motor. A bevel gear is rotationally arranged in the chuck, the bevel gear is meshed with a cylindrical gear, two clamping jaws are arranged on the chuck, first telescopic cylinders are arranged on the outer sides of the two clamping jaws respectively, two clamping grooves are formed in the chuck, the two clamping jaws are movably sleeved with the two clamping grooves respectively, and a spiral groove is formed in the side face, away from the cylindrical gear, of the bevel gear. And the bottom sides of the two clamping jaws are sleeved in the spiral groove. According to the edge cutting device for the aluminum alloy elbows, a plurality of elbow assemblies can be conveniently positioned and clamped, and the edges of the elbow assemblies can be conveniently cut.

Description

Technical Field

[0001] The utility model relates to the technical field of trimming of aluminum alloy elbows, in particular to a trimming device for aluminum alloy elbows. Background Art

[0002] The density of aluminum alloy materials is only one-third of that of iron, and aluminum alloy materials have excellent plasticity and good ductility. For this reason, aluminum alloy materials are processed into various parts through extrusion, stretching and other manufacturing methods. In terms of corrosion resistance, although aluminum shows strong reducing ability in chemical reactions, under natural conditions, a protective oxide film will quickly form on the surface of aluminum alloy products, giving aluminum alloy products better corrosion resistance than steel. In addition, aluminum alloy products are easy to strengthen, easy to surface treat, and have a high recycling rate, making aluminum alloy products the preferred material for many parts. Aluminum alloy elbows are elbows made of aluminum alloy materials as the base material. Elbows refer to pipe fittings that change the direction, angle and length of the pipeline to facilitate the adjustment of the pipeline system. For this reason, elbows are indispensable components in the pipeline system.

[0003] Cold bending is an important plastic forming technology, which is widely used in the automotive, aviation and other industrial fields. Compared with other processes, cold bending has the advantages of simple mold structure, simple operation and excellent forming quality. However, the cross-section of the cold bending model is a semicircular structure, and the elbow assembly after cold bending is a semicircular cross-sectional structure. Therefore, it is necessary to weld two elbow assemblies with semicircular cross-sectional structures together through welding to form an elbow. Since the elbow needs to change the direction, angle and length of the pipeline, the elbow has higher requirements for sealing, and it is necessary to avoid pores and cracks in the manufactured elbow. For elbow manufacturing and processing, pores are prone to appear at the welding point of the two elbow assemblies. In order to prevent pores from appearing at the welding point of the manufactured elbow assembly, the elbow assembly after cold bending needs to be trimmed to make the edge of the elbow assembly smooth to avoid pores in the elbow. For the trimming of elbow components, in order to quickly complete the clamping of elbow components, most trimming workbenches can only clamp one elbow component, which means that each trimming process can only complete the trimming of one elbow component, resulting in a relatively slow trimming process. At the same time, if the positioning of the elbow component is incorrect, the trimming thickness of the two elbow components assembled together will be inconsistent, making it difficult to weld the two elbow components together. If multiple elbow components are clamped to the same trimming workbench, although the thickness of the trimming of multiple elbow components can be guaranteed to be consistent, this will also bring a problem, that is, it is necessary to locate the clamping position of each elbow component, especially for small batch processing. If the size of the elbow component changes, the elbow component needs to be re-positioned, and a lot of time is needed to calculate and measure the clamping position of each elbow component, which makes the clamping of the elbow component very troublesome. Therefore, the trimming processing of the elbow needs to be improved so that the two elbow components can be welded together, and it is also convenient to locate and clamp multiple elbow components, so that the processing and manufacturing of aluminum alloy elbows can be completed quickly. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides an aluminum alloy elbow trimming device which is convenient for positioning and clamping a plurality of elbow assemblies and for trimming the plurality of elbow assemblies, so as to overcome the defects in the prior art.

[0005] The technical scheme adopted by the utility model is: a trimming device for an aluminum alloy elbow, comprising a workbench, a support plate vertically arranged on the workbench, a support arm arranged on the top of the support plate, a first motor arranged on the support arm, and a saw blade arranged on the driving shaft of the first motor; a chuck is arranged on the workbench, a bevel gear is rotatably arranged in the chuck, a cylindrical gear is meshed with the bevel gear, two claws are arranged on the chuck, first telescopic cylinders are respectively arranged on the outer sides of the two claws, the first telescopic cylinder and the chuck are both installed on the workbench, the telescopic direction of the first telescopic cylinder faces the claws, two slots are respectively provided on the chuck, the two claws are respectively movably sleeved in the two slots, a spiral groove is provided on the side of the bevel gear away from the cylindrical gear, the bottoms of the two claws are both sleeved in the spiral groove, a sleeve hole is provided on one side of the chuck, and the cylindrical gear is rotatably sleeved on the sleeve hole.

[0006] Preferably, a rotating shaft is provided on the side of the support arm close to the support plate, the rotating shaft is installed on one end of the support arm, the top and the bottom of the rotating shaft are respectively rotatably mounted with hinges, the middle of the rotating shaft is mounted with a first half gear, the first half gear is mounted on the rotating shaft, a second motor is provided on one side of the first half gear, the second motor and the hinge are respectively mounted on the support plate, a second half gear is provided on the driving shaft of the second motor, the second half gear is mounted on the driving shaft of the second motor, and the second half gear is meshed with the first half gear.

[0007] Preferably, a box body is provided on the support plate, one side of the box body is installed on the support plate, the rotating shaft, the hinge, the first half gear, the second motor, the second half gear and one side of the support arm are all located in the box body, the second motor and the hinge are installed on the support plate through the box body, a through groove is opened on one side of the box body, the support arm is sleeved in the through groove, the first motor is installed on the other side of the support arm, a pull rod is provided on the outside of the first motor, one end of the pull rod is installed on the support arm, and the other end of the pull rod is located on the outside of the saw blade.

[0008] Preferably, a connecting plate is horizontally arranged at the bottom end of the support plate, a second telescopic cylinder is vertically arranged below the connecting plate, a fixed plate is arranged at the bottom end of the second telescopic cylinder, the fixed plate is horizontally installed on the workbench, and both sides of the second telescopic cylinder are respectively installed on the fixed plate and the connecting plate; the connecting plate and the support plate form a T-shaped cross-section, and limiting rods are respectively arranged on both sides of the support plate, one end of the limiting rod is installed on the fixed plate, and a through hole is opened on the connecting plate, and the limiting rod is movably mounted in the through hole, and the aperture of the through hole is consistent with the diameter of the limiting rod.

[0009] Preferably, a limit sleeve is movably mounted on the limit rod, the inner diameter of the limit sleeve matches the diameter of the limit rod, and the bottom end of the limit sleeve is mounted on a connecting plate or a fixed plate; a reinforcement sleeve is mounted on the telescopic end of the second telescopic cylinder, and both sides of the reinforcement sleeve are respectively mounted on the connecting plate and the telescopic end of the second telescopic cylinder.

[0010] Preferably, the sleeve hole of the chuck faces the support plate, a handle is inserted into the outside of the cylindrical gear, a sleeve groove is provided on the support plate, the sleeve groove is extended from the top of the support plate to the bottom of the support plate, the handle is movably sleeved in the sleeve groove, a rhombus hole is provided on the outside of the cylindrical gear, one end of the handle is sleeved in the rhombus hole, and the shape of one end of the handle is consistent with the inner cavity structure of the rhombus hole.

[0011] Preferably, a support block is provided between the first telescopic cylinder and the clamping claw, and the support block is installed on the top surface of the workbench; a pressure block is provided on the first telescopic cylinder, and the pressure block is located between the first telescopic cylinder and the clamping claw, and the pressure block is installed on the telescopic end of the first telescopic cylinder, and arc grooves are respectively provided on the inner side of the pressure block and the top of the support block.

[0012] Preferably, one end of the clamping claw close to the first telescopic cylinder is wrapped with a positioning sleeve, the positioning sleeve is installed on one end of the clamping claw, and the outer wall diameter of the positioning sleeve first increases and then decreases along the direction from top to bottom.

[0013] The beneficial effects of the utility model are as follows: first, the utility model drives the saw blade to rotate by the first motor, so as to perform trimming on the elbow assembly mounted on the workbench. The two elbow assemblies can be positioned respectively by the two claws, and the utility model controls the two claws to move synchronously along the two grooves by operating the cylindrical gear through the bevel gear with a threaded groove, so as to quickly position the inner sides of the two semicircular aluminum alloy elbows. Then, the utility model clamps the semicircular aluminum alloy elbow on the claws by the first telescopic cylinder, and trims the two aluminum alloy elbows at the same time, thereby improving the trimming efficiency of the aluminum alloy elbows, and controlling the trimming thickness of the two aluminum alloy elbows to be consistent, so that the two elbow assemblies can be welded together.

[0014] Secondly, the utility model hinges the support arm on the support plate through the provided rotating shaft and hinge, and drives the support arm to swing through the provided second motor, the first half gear and the second half gear, so as to use the saw blade to cut the end face of the aluminum alloy elbow. Since one side of the outer circumference of the first half gear and the second half gear has a tooth pressure, and the other side of the outer circumference of the first half gear and the second half gear is a smooth surface, the second motor can only drive the first half gear to rotate half a circle to prevent the support arm from colliding with the support plate. In addition, the utility model protects the rotating shaft, the hinge, the first half gear, the second motor, the second half gear and one side of the support arm through the provided box, and facilitates the manual adjustment of the position of the saw blade through the provided pull rod.

[0015] Thirdly, the utility model can drive the support plate to move up and down by setting a second telescopic cylinder, so as to facilitate the adjustment of the height of the saw blade, so as to facilitate the adjustment of the thickness of the cutting edge. The limit rod and limit sleeve are set to limit the connection plate and the support plate to only move up and down, so as to reduce the shaking of the support plate and the connection plate, and improve the stability of the support plate and the connection plate. The connection between the second telescopic cylinder and the connection plate is reinforced by the reinforcement sleeve, so as to improve the stability of the second telescopic cylinder. In addition, the utility model inserts a handle on the cylindrical gear to facilitate the rotation of the cylindrical gear, so as to facilitate the adjustment of the positions of the two claws.

[0016] In addition, the utility model supports the aluminum alloy elbow mounted on the workbench through the support block to prevent the aluminum alloy elbow from being pressed and moving downward during the trimming process. The pressure block is set to increase the outer pressure area of ​​the elbow assembly to prevent the elbow assembly from being deformed due to pressure and to prevent the telescopic end of the first telescopic cylinder from scratching the elbow assembly. At the same time, the utility model increases the inner pressure area of ​​the elbow assembly through the positioning sleeve to improve the effect of positioning the elbow assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a first stereoscopic schematic diagram of the utility model.

[0018] Figure 2 It is a second stereoscopic schematic diagram of the utility model.

[0019] Figure 3 This is a first assembly schematic diagram of the bevel gear, cylindrical gear, claws and handle in the utility model.

[0020] Figure 4 This is a second assembly schematic diagram of the bevel gear, cylindrical gear, claw and handle in the utility model.

[0021] Figure 5 It is a schematic diagram of the assembly of the middle support arm, the second motor and the box body of the utility model.

[0022] Figure 6 This is a diagram showing the use status of the clamping elbow in the utility model.

[0023] Figure 7 for Figure 6 A magnified schematic diagram of center A. DETAILED DESCRIPTION

[0024] like Figures 1 to 7As shown, a trimming device for an aluminum alloy elbow comprises a workbench 1, a support plate 2 vertically arranged on the workbench 1, an arm 3 arranged on the top of the support plate 2, a first motor 4 arranged on the arm 3, and a saw blade 5 arranged on the driving shaft of the first motor 4. The saw blade 5 is driven to rotate by the operation of the first motor 4 so as to perform trimming processing on the elbow assembly. A chuck 6 is arranged on the workbench 1, a bevel gear 7 is rotatably arranged inside the chuck 6, a cylindrical gear 8 is meshed with the bevel gear 7, two claws 9 are arranged on the chuck 6, and first telescopic cylinders 10 are respectively arranged on the outer sides of the two claws 9. The first telescopic cylinder 10 and the chuck 6 are both installed on the workbench 1, and the telescopic direction of the first telescopic cylinder 10 is toward the claws 9. Two card slots 11 are respectively provided on the chuck 6, and the two claws 9 are respectively movable The chuck 6 is movable and sleeved in two slots 11, a spiral groove 12 is provided on the side of the bevel gear 7 away from the cylindrical gear 8, the bottoms of the two claws 9 are sleeved in the spiral groove 12, a sleeve hole is provided on one side of the chuck 6, and the cylindrical gear 8 is rotatably sleeved on the sleeve hole, and the bevel gear 7 is driven to rotate by rotating the cylindrical gear 8, so that the spiral groove 12 provided on the bevel gear 7 rotates, thereby driving the two claws 9 to move synchronously along the two slots 11 respectively, so as to quickly position the two semicircular aluminum alloy elbows, and the first telescopic cylinder 10 is controlled to extend so as to clamp the semicircular aluminum alloy elbow on the claw 9, so that the two aluminum alloy elbows can be trimmed at the same time, so as to facilitate the control of the trimming thickness of the two aluminum alloy elbows to be consistent, so that the two elbow components can be welded together. One end of the two clamping grooves 11 is connected, and the two clamping grooves 11 are both I-shaped structures. The middle and lower parts of the two clamping claws 9 are respectively located in the two clamping grooves 11, and the cross-sectional shape of the middle and lower parts of the clamping claws 9 is consistent with the cross-sectional shape of the clamping grooves 11. The two clamping claws 9 are both located on one side of the support plate 2, and the angle between the two clamping claws 9 is 110° to 130°. The bevel gear 7 and the cylindrical gear 8 are respectively provided with bearings, and the bevel gear 7 and the cylindrical gear 8 are respectively rotatably installed in the chuck 6 through the bearings. In addition, it should be noted that in order to prevent the clamping claw 9 from sliding after the aluminum alloy elbow is installed, a bolt is provided on one side of the cylindrical gear 8, and the bolt is threadedly mounted in the chuck 6. One end of the bolt is in contact with the cylindrical gear 8, and the cylindrical gear 8 is clamped in the chuck 6 by the bolt, so that by turning the bolt, the damping force of the cylindrical gear 8 can be adjusted to prevent the clamping claw 9 from sliding.

[0025] In this embodiment, a rotating shaft 13 is provided on one side of the support arm 3 close to the support plate 2, and the rotating shaft 13 is installed on one end of the support arm 3. The top and the bottom of the rotating shaft 13 are respectively rotatably mounted with hinges 14, and the middle of the rotating shaft 13 is mounted with a first half gear 15, and the first half gear 15 is mounted on the rotating shaft 13. A second motor 16 is provided on one side of the first half gear 15, and the second motor 16 and the hinge 14 are respectively mounted on the support plate 2. A second half gear 17 is provided on the driving shaft of the second motor 16, and the second half gear 17 is mounted on the driving shaft of the second motor 16. The second half gear 17 is relative to the first half gear 15. The second motor 16 is engaged, and the first half gear 15 and the support arm 3 are driven to rotate around the rotating shaft 13 by means of the second half gear 17, thereby driving the first motor 4 and the saw blade 5 to rotate, so that the saw blade 5 can be used to cut the end face of the aluminum alloy elbow; one side of the outer circumferential surface of the first half gear 15 and the second half gear 17 is toothed, and the other side of the outer circumferential surface of the first half gear 15 and the second half gear 17 is smooth. For this reason, the second motor 16 can only drive the first half gear 15 to rotate half a circle to prevent the support arm 3 and the saw blade 5 from colliding with the support plate 2; the center line of the chuck 6 and the center line of the rotating shaft 13 are located on the same axis.

[0026] Specifically, a box body 18 is provided on the support plate 2, and the rotating shaft 13, the hinge 14, the first half gear 15, the second motor 16, the second half gear 17 and one side of the support arm 3 are all located in the box body 18. The second motor 16 and the hinge 14 are installed on the support plate 2 through the box body 18. A through slot 19 is opened on one side of the box body 18, and the support arm 3 is sleeved in the through slot 19, so as to protect the rotating shaft 13, the hinge 14, the first half gear 15, the second motor 16, the second half gear 17 and one side of the support arm 3. The first motor 4 is installed on the other side of the support arm 3, and a pull rod 20 is arranged on the outside of the first motor 4, one end of the pull rod 20 is installed on the support arm 3, and the other end of the pull rod 20 is located on the outside of the saw blade 5. By pulling the pull rod 20, it is convenient to manually pull the support arm 3 to rotate, thereby facilitating manual adjustment of the position of the saw blade 5.

[0027] Please participate again Figure 1A connecting plate 21 is horizontally arranged at the bottom end of the supporting plate 2, a second telescopic cylinder 22 is vertically arranged below the connecting plate 21, a fixing plate 23 is arranged at the bottom end of the second telescopic cylinder 22, the fixing plate 23 is horizontally mounted on the workbench 1, and the two sides of the second telescopic cylinder 22 are respectively mounted on the fixing plate 23 and the connecting plate 21. By controlling the extension and contraction of the second telescopic cylinder 22, the connecting plate 21 and the supporting plate 2 can be driven to rise and fall, so as to facilitate the adjustment of the height of the saw blade 5 to adjust the thickness of the cutting edge; The connecting plate 21 and the supporting plate 2 form a T-shaped cross-section. Limiting rods 24 are respectively arranged on both sides of the supporting plate 2. One end of the limiting rod 24 is installed on the fixing plate 23. A through hole is opened on the connecting plate 21. The limiting rod 24 is movably mounted in the through hole. The aperture of the through hole is consistent with the diameter of the limiting rod 24. The limiting rod 24 is used to limit the connecting plate 21 and the supporting plate 2 to only move up and down, so as to reduce the shaking of the supporting plate 2 and the connecting plate 21 and improve the stability of the support plate 2 and the connecting plate 21.

[0028] In this embodiment, a limiting sleeve 25 is movably mounted on the limiting rod 24, and the inner diameter of the limiting sleeve 25 matches the diameter of the limiting rod 24. The bottom end of the limiting sleeve 25 is mounted on the connecting plate 21 or the fixing plate 23 to improve the effect of preventing the supporting plate 2 and the connecting plate 21 from shaking; a reinforcing sleeve 26 is mounted on the telescopic end of the second telescopic cylinder 22, and the two sides of the reinforcing sleeve 26 are respectively mounted on the connecting plate 21 and the telescopic end of the second telescopic cylinder 22, thereby reinforcing the connection between the second telescopic cylinder 22 and the connecting plate 21 to improve the stability of the second telescopic cylinder 22 when used.

[0029] It should be noted that the sleeve hole of the chuck 6 faces the support plate 2, and a handle 27 is inserted into the outer side of the cylindrical gear 8. A sleeve groove 28 is provided on the support plate 2, and the sleeve groove 28 is provided along the top of the support plate 2 to the bottom of the support plate 2. The handle 27 is movably sleeved in the sleeve groove 28. A multi-diamond hole is provided on the outer side of the cylindrical gear 8, and one end of the handle 27 is sleeved in the multi-diamond hole. The shape of one end of the handle 27 is consistent with the inner cavity structure of the multi-diamond hole, so that by rotating the handle 27, the cylindrical gear 8 can be driven to rotate, thereby facilitating the adjustment of the positions of the two claws 9.

[0030] In this embodiment, a support block 29 is arranged between the first telescopic cylinder 10 and the claw 9, and the support block 29 is installed on the top surface of the workbench 1. There are two support blocks 29, and the two support blocks 29 are respectively located on the outside of the two claws 9 to support the aluminum alloy elbow mounted on the workbench 1 to prevent the aluminum alloy elbow from being pressed and moving downward during the trimming process; a pressure block 30 is arranged on the first telescopic cylinder 10, and the pressure block 30 is located between the first telescopic cylinder 10 and the claw 9. The pressure block 30 is installed on the telescopic end of the first telescopic cylinder 10, and arc grooves are respectively provided on the inner side of the pressure block 30 and the top of the support block 29, thereby increasing the pressure area of ​​the outer side of the elbow assembly to avoid deformation of the elbow assembly due to pressure and to avoid scratching the elbow assembly by the telescopic end of the first telescopic cylinder 10.

[0031] Specifically, one end of the clamping claw 9 close to the first telescopic cylinder 10 is wrapped with a positioning sleeve 31, and the positioning sleeve 31 is installed on one end of the clamping claw 9. The outer wall diameter of the positioning sleeve 31 first increases and then decreases from top to bottom, thereby increasing the contact area of ​​the clamping claw 9 on the elbow assembly to improve the positioning effect of the elbow assembly.

[0032] The use of this product is as follows: Figures 1 to 7 As shown, first, place the elbow assembly that needs to be trimmed on the support block 29, and then adjust the placement angle of the elbow assembly so that the saw blade 5 can be used to trim the elbow assembly; by turning the handle 27, the cylindrical gear 8 and the bevel gear 7 are driven to rotate, thereby driving the claw 9 to move toward the elbow assembly placed on the support block 29 until one of the claws 9 contacts the inner side of the elbow assembly. Then, take out another elbow assembly and place it on the outside of another claw 9, so that the inner side of another elbow assembly contacts the other claw 9, and the other elbow assembly is placed on the support block 29. At the same time, adjust the placement angle of the other elbow assembly so that the saw blade 5 can be used to trim the elbow assembly; after the two elbow assemblies are positioned, control the first telescopic cylinder 10 to extend toward the claw 9 so that the two elbow assemblies are clamped on the workbench 1. Then, by pulling the pull rod 20, the support arm 3 is located on one side of the support plate 1, and the position of the first half gear 15 is controlled to be meshed with the second half gear 17. By starting the first motor 4, the saw blade 5 is driven to rotate, and then according to the requirements of the trimming thickness of the two elbow assemblies, the telescopic amount of the second telescopic cylinder 22 is adjusted to meet the trimming needs of the two elbow assemblies. Finally, after the second telescopic cylinder 22 is adjusted, the second motor 16 is started, and the second half gear 17 is used to drive the first half gear 15 to rotate, so as to perform trimming operations on the two elbow assemblies. After the trimming operation is completed, the second motor 16 is first turned off, the second telescopic cylinder 22 is controlled to extend, and then the first motor 4 is turned off, and the first telescopic cylinder 10 is controlled to shorten, so as to facilitate the removal of the two elbow assemblies.

[0033] Through this embodiment, the saw blade 5 is driven to rotate by the first motor 4 so as to perform trimming on the elbow assembly mounted on the workbench 1. The two elbow assemblies can be positioned respectively by the two claws 9, and the utility model controls the two claws 9 to move synchronously along the two grooves 11 respectively by operating the cylindrical gear 8 through the bevel gear 7 with the threaded groove 12, so as to quickly position the inner sides of the two semicircular aluminum alloy elbows. Then, the utility model clamps the semicircular aluminum alloy elbow on the claws 9 through the first telescopic cylinder 10, and trims the two aluminum alloy elbows at the same time, thereby improving the trimming efficiency of the aluminum alloy elbows and controlling the trimming thickness of the two aluminum alloy elbows to be consistent so that the two elbow assemblies can be welded together.

[0034] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A trimming device for an aluminum alloy elbow, comprising a workbench (1), a support plate (2) vertically arranged on the workbench (1), a support arm (3) arranged on the top of the support plate (2), a first motor (4) arranged on the support arm (3), and a saw blade (5) arranged on a drive shaft of the first motor (4), characterized in that: The workbench (1) is provided with a chuck (6), a bevel gear (7) is rotatably provided inside the chuck (6), a cylindrical gear (8) is meshed with the bevel gear (7), two claws (9) are provided on the chuck (6), first telescopic cylinders (10) are respectively provided on the outer sides of the two claws (9), the first telescopic cylinder (10) and the chuck (6) are both mounted on the workbench (1), the telescopic direction of the first telescopic cylinder (10) is toward the claws (9), two slots (11) are respectively provided on the chuck (6), the two claws (9) are respectively movably sleeved in the two slots (11), a spiral groove (12) is provided on the side of the bevel gear (7) away from the cylindrical gear (8), the bottoms of the two claws (9) are both sleeved in the spiral groove (12), and a sleeve hole is provided on one side of the chuck (6), the cylindrical gear (8) is rotatably sleeved on the sleeve hole.

2. The trimming device for aluminum alloy elbow according to claim 1, characterized in that: A rotating shaft (13) is provided on one side of the support arm (3) close to the support plate (2), the rotating shaft (13) is mounted on one end of the support arm (3), a hinge (14) is rotatably mounted on the top and bottom of the rotating shaft (13), a first half gear (15) is mounted on the middle of the rotating shaft (13), the first half gear (15) is mounted on the rotating shaft (13), a second motor (16) is provided on one side of the first half gear (15), the second motor (16) and the hinge (14) are respectively mounted on the support plate (2), a second half gear (17) is provided on the drive shaft of the second motor (16), the second half gear (17) is mounted on the drive shaft of the second motor (16), and the second half gear (17) is meshed with the first half gear (15).

3. The trimming device for aluminum alloy elbow according to claim 2, characterized in that: A box body (18) is provided on the support plate (2), one side of the box body (18) is mounted on the support plate (2), the rotating shaft (13), the hinge (14), the first half gear (15), the second motor (16), the second half gear (17) and one side of the support arm (3) are all located in the box body (18), the second motor (16) and the hinge (14) are installed on the support plate (2) through the box body (18), one side of the box body (18) is provided with a through groove (19), the support arm (3) is sleeved in the through groove (19), the first motor (4) is installed on the other side of the support arm (3), a pull rod (20) is provided on the outer side of the first motor (4), one end of the pull rod (20) is installed on the support arm (3), and the other end of the pull rod (20) is located on the outer side of the saw blade (5).

4. The trimming device for aluminum alloy elbow according to claim 1, characterized in that: A connecting plate (21) is horizontally arranged at the bottom end of the support plate (2), a second telescopic cylinder (22) is vertically arranged below the connecting plate (21), a fixing plate (23) is arranged at the bottom end of the second telescopic cylinder (22), the fixing plate (23) is horizontally mounted on the workbench (1), and two sides of the second telescopic cylinder (22) are respectively mounted on the fixing plate (23) and the connecting plate (21); the connecting plate (21) and the support plate (2) form a T-shaped cross-section, and limiting rods (24) are respectively arranged on two sides of the support plate (2), one end of the limiting rod (24) is mounted on the fixing plate (23), and a through hole is opened on the connecting plate (21), and the limiting rod (24) is movably sleeved in the through hole, and the diameter of the through hole matches the diameter of the limiting rod (24).

5. The trimming device for aluminum alloy elbow according to claim 4, characterized in that: The limiting rod (24) is movably mounted with a limiting sleeve (25), the inner diameter of the limiting sleeve (25) matches the diameter of the limiting rod (24), and the bottom end of the limiting sleeve (25) is mounted on the connecting plate (21) or the fixing plate (23); the telescopic end of the second telescopic cylinder (22) is mounted with a reinforcing sleeve (26), and the two sides of the reinforcing sleeve (26) are respectively mounted on the connecting plate (21) and the telescopic end of the second telescopic cylinder (22).

6. The trimming device for aluminum alloy elbow according to claim 1, characterized in that: The sleeve hole of the chuck (6) faces the support plate (2), a handle (27) is inserted on the outer side of the cylindrical gear (8), a sleeve groove (28) is provided on the support plate (2), the sleeve groove (28) is provided along the top of the support plate (2) to the bottom of the support plate (2), the handle (27) is movably sleeved in the sleeve groove (28), the outer side of the cylindrical gear (8) is provided with a multi-diamond hole, one end of the handle (27) is sleeved in the multi-diamond hole, and the shape of one end of the handle (27) is consistent with the inner cavity structure of the multi-diamond hole.

7. The trimming device for aluminum alloy elbow according to claim 1, characterized in that: A support block (29) is provided between the first telescopic cylinder (10) and the clamping claw (9), and the support block (29) is mounted on the top surface of the workbench (1); a pressure block (30) is provided on the first telescopic cylinder (10), and the pressure block (30) is located between the first telescopic cylinder (10) and the clamping claw (9). The pressure block (30) is mounted on the telescopic end of the first telescopic cylinder (10), and arc grooves are respectively provided on the inner side of the pressure block (30) and the top of the support block (29).

8. The trimming device for aluminum alloy elbow according to claim 1, characterized in that: One end of the clamping claw (9) close to the first telescopic cylinder (10) is wrapped with a positioning sleeve (31), and the positioning sleeve (31) is installed on one end of the clamping claw (9). The outer wall diameter of the positioning sleeve (31) increases first and then decreases in a direction from top to bottom.

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