Automatic creasing device for aluminum pipe of electric power fitting

Abstract

The invention relates to an electric power fitting aluminum pipe automatic indentation device which comprises a motor and a screw fixedly arranged on the motor, a feeding conveying belt and a discharging conveying belt which are used for conveying aluminum pipes are symmetrically arranged on the two sides of the screw, a roller is arranged between the feeding conveying belt and the discharging conveying belt, and an indentation assembly is arranged on one side of the roller. A material pushing assembly is arranged on the screw rod, the material pushing assembly comprises a feeding push rod and a discharging push rod which are arranged on the screw rod in a sliding mode, and the feeding push rod and the discharging push rod are provided with a switching assembly on the moving path; a feeding push rod pushes an aluminum pipe on a feeding conveying belt on one side to a rolling wheel for indentation through a pushing assembly, meanwhile, a discharging push rod pushes an aluminum pipe subjected to indentation on a rolling wheel on the other side to a discharging conveying belt for discharging, feeding, discharging and indentation of the aluminum pipe are alternately completed, and meanwhile a water injection assembly injects water into an inner cavity of the aluminum pipe before indentation of the aluminum pipe is completed; the aluminum pipe is prevented from deforming during indentation, and the indentation efficiency and quality of the aluminum pipe are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power fittings, and more specifically to an automatic indentation device for an aluminum tube of an electric power fitting. Background Art

[0002] Iron or aluminum metal accessories widely used in power transmission lines are collectively referred to as hardware. Hardware comes in many varieties and has different uses, such as various wire clamps for installing conductors, various hanging rings for forming insulator strings, various crimping tubes and repair tubes for connecting conductors, various types of spacers on split conductors, etc. In addition, there are various types of wire pulling hardware for poles and towers, and the size of the hardware used to protect the conductors must be coordinated with each other.

[0003] In the process of manufacturing electric hardware, it is necessary to use an indentation device to indent the aluminum tube. The Chinese patent with publication number CN110548805B discloses an electric hardware aluminum tube indentation machine, which clamps the workpiece in the space formed by the die and two rollers. The friction of the die pushes the workpiece to rotate on the rollers. During the rotation of the workpiece, the pressure applied by the die is evenly released on the two rollers. However, when the indentation machine is used, the die is pushed by the power unit to move in a direction perpendicular to the axial direction of the roller. The friction between the die and the aluminum tube causes the aluminum tube to rotate, and the convex characters on the die leave marks on the surface of the aluminum tube. After the one-way movement of the die is completed, the aluminum tube is indented, the finished product is taken out, and the reset button is pressed. The die slides in the opposite direction to the initial position to wait for the next workpiece to be indented. This method is inefficient and cannot achieve continuous indentation. It is not suitable for large-scale production and is prone to deformation of the aluminum tube during indentation. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and provide an automatic indentation device for aluminum tubes of power fittings. Through a pushing assembly, a loading push rod pushes the aluminum tube on a loading conveyor belt on one side onto a roller for indentation, while a unloading push rod pushes the aluminum tube on the roller on the other side that has completed indentation onto a unloading conveyor belt for unloading, and the loading and unloading and indentation of the aluminum tube are completed alternately. At the same time, a water injection assembly injects water into the inner cavity of the aluminum tube before indentation of the aluminum tube to prevent the aluminum tube from being deformed during indentation, thereby greatly improving the efficiency and quality of indentation of the aluminum tube.

[0005] The technical solutions of the present invention are as follows:

[0006] An automatic creasing device for aluminum tubes of electric hardware comprises a motor and a screw fixedly arranged on the motor, a feeding conveyor belt and a discharging conveyor belt for conveying aluminum tubes are symmetrically arranged on both sides of the screw, a roller is arranged between the feeding conveyor belt and the discharging conveyor belt, a creasing assembly is arranged on one side of the roller, a water injection assembly is arranged below the roller, a pushing assembly is arranged on the screw, the pushing assembly comprises a feeding push rod and a discharging push rod slidably arranged on the screw, and the feeding push rod and the discharging push rod are provided with a A switching assembly, wherein the pushing assembly is used for the loading push rod to push the un-indented aluminum tube on the loading conveyor belt onto the roller, while the unloading push rod pushes the aluminum tube that has been indented at the roller on the other side onto the unloading conveyor belt. The water injection assembly is used to seal the aluminum tube port on the roller and then inject water into its inner cavity. The indentation assembly is used to indent the aluminum tube after water injection. The switching assembly is used for the loading push rod and the unloading push rod to load and unload at the loading conveyor belt and roller on one side and then rotate 180° to switch to the loading conveyor belt and roller on the other side.

[0007] As a preferred embodiment, the pushing assembly also includes a nut slidably arranged on the screw, a loading sleeve rotatably arranged on the nut, a unloading sleeve rotatably arranged on the loading sleeve, a sliding rod fixedly arranged on both sides of the loading push rod and the unloading push rod, a sliding rail fixedly arranged on both sides of the screw, and a sliding groove opened on the sliding rail. The loading push rod is fixedly arranged on the loading sleeve, the unloading push rod is fixedly arranged on the unloading sleeve, the sliding rod cooperates with the sliding groove, a fixed shaft is arranged on the screw and the unloading sleeve is slidably arranged on the fixed shaft.

[0008] As a preferred embodiment, the water injection assembly includes a support column fixedly arranged under the roller, a fixed frame slidably arranged on the support column, a reciprocating screw rotatably arranged in the fixed frame, fixed rods slidably arranged on both sides of the reciprocating screw, a cylinder fixedly arranged on the fixed rod, a conical plug fixedly arranged on the cylinder, a sliding sleeve slidably arranged on the conical plug, and a sealing ring fixedly arranged on the sliding sleeve, the sealing ring cooperates with the pipe mouth of the aluminum tube, the conical plug cooperates with the sealing ring, the conical plug on one side is connected to a water inlet pipe and the conical plug on the other side is connected to a water outlet pipe, and a spring is connected between the sliding sleeve and the conical plug.

[0009] Preferably, the indentation assembly comprises a fixed column, a screw rod rotatably disposed on the fixed column, and an indentation plate slidably disposed on the screw rod, and the indentation plate cooperates with the aluminum tube.

[0010] Preferably, the switching assembly includes a first bevel tooth fixedly arranged on a loading sleeve, a second bevel tooth fixedly arranged on a unloading sleeve, a fixed sleeve sleeved on the loading sleeve and the unloading sleeve, a connecting frame fixedly arranged on the fixed sleeve, a servo motor fixedly arranged on the connecting frame, and a third bevel tooth fixedly arranged on the servo motor, the third bevel tooth is meshed with the first bevel tooth and the second bevel tooth, and the connecting frame is slidably arranged on a slide rail.

[0011] As a preference, both the loading push rod and the unloading push rod are provided with a rubber layer.

[0012] As a preference, the conical plug is made of a flexible material.

[0013] As a preferred embodiment, both the loading conveyor belt and the unloading conveyor belt are provided with arc plates.

[0014] The beneficial effects of the present invention are

[0015] 1. The present invention is provided with a pushing assembly and a switching assembly. When the aluminum on the roller on one side is indented, the motor drives the screw to rotate, so that the nut pushes the loading push rod and the unloading push rod to slide, and the loading push rod pushes the aluminum tube on the loading conveyor belt on the other side to the roller for loading, and at the same time the unloading push rod pushes the aluminum tube with completed indentation to the unloading conveyor belt for unloading. Then the motor reverses, driving the loading push rod and the unloading push rod to reset. During the resetting process, the servo motor drives the third bevel gear to rotate, and drives the first bevel gear and the second bevel gear to rotate in the opposite direction, so that the loading push rod and the unloading push rod are both rotated 180° upwards. After switching the positions of the loading push rod and the unloading push rod, the aluminum tube on the corresponding loading conveyor belt is respectively loaded and the aluminum tube with completed indentation is unloaded at the same time, and the loading and unloading are completed alternately, thereby improving the efficiency and quality of the aluminum tube indentation.

[0016] 2. The present invention is provided with a water injection assembly. When the aluminum tube is pushed onto the roller, the cylinder drives the fixing frame and the two tapered plugs to rise until the center of the tapered plug is flush with the center of the aluminum tube. Then the driving device drives the reciprocating screw to rotate, driving the two tapered plugs to slide relative to each other. The tapered plug drives the sliding sleeve and the sealing ring to slide toward the tube mouth of the aluminum tube until the sealing ring fits with the inner wall of the aluminum tube and the sliding sleeve fits with the port. Then the fixing rod continues to move, driving the two tapered plugs to slide relative to each other until they fit with the sealing ring. After sealing both ends of the aluminum tube, water flows into the inner cavity of the aluminum tube from the water inlet pipe until the inner cavity is filled, thereby supporting the aluminum tube and preventing deformation during indentation. When the indentation is completed, water flows out from the water outlet pipe. Then the driving device drives the reciprocating screw to reverse, so that the tapered plug and the sealing ring are separated from the aluminum tube, and they are lowered to below the roller under the action of the cylinder to prevent interference with the loading and unloading of the aluminum tube.

[0017] In summary, the present invention has the advantages of good indentation effect and automatic loading and unloading, and is suitable for the technical field of electric power fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of an automatic indentation device for aluminum tubes of electric power fittings;

[0020] Figure 2 It is a schematic diagram of the structure of the indentation component;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 It is a structural schematic diagram of the pusher assembly;

[0023] Figure 5 It is a structural schematic diagram of the water injection component;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the screw;

[0025] Figure 7 It is a schematic diagram of the state when the loading push rod and the unloading push rod push the aluminum tube for loading and unloading;

[0026] Figure 8 It is a schematic diagram of the state when the conical plug seals the pipe mouth of the aluminum pipe and then injects water;

[0027] Fig. 9 This is a schematic diagram of the state when the loading push rod and the unloading push rod are reset and switched positions at the same time;

[0028] Fig.10 It is a schematic diagram of the state when the loading push rod and the unloading push rod are rotating;

[0029] Figure numerals: 1 motor, 2 screw, 3 aluminum tube, 4 feeding conveyor belt, 5 unloading conveyor belt, 6 roller, 7 indentation assembly, 71 fixed column, 72 screw, 73 indentation plate, 8 water injection assembly, 81 support column, 82 fixed frame, 83 reciprocating screw, 84 fixed rod, 85 cylinder, 86 conical plug, 87 sliding sleeve, 88 sealing ring, 9 pushing assembly, 91 feeding push rod, 92 unloading push rod, 93 nut, 94 feeding sleeve, 95 unloading sleeve, 96 sliding rod, 97 sliding rail, 98 sliding groove, 99 fixed shaft, 10 switching assembly, 101 first bevel gear, 102 second bevel gear, 103 fixed sleeve, 104 connecting frame, 105 servo motor, 106 third bevel gear, 11 water inlet pipe, 12 water outlet pipe, 13 arc plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0031] Embodiment 1

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1 to 10 As shown, an automatic creasing device for aluminum tubes of electric hardware comprises a motor 1 and a screw 2 fixedly arranged on the motor 1, a feeding conveyor belt 4 and a discharging conveyor belt 5 for conveying aluminum tubes 3 are symmetrically arranged on both sides of the screw 2, a roller 6 is arranged between the feeding conveyor belt 4 and the discharging conveyor belt 5, a creasing assembly 7 is arranged on one side of the roller 6, a water injection assembly 8 is arranged below the roller 6, a pushing assembly 9 is arranged on the screw 2, and the pushing assembly 9 comprises a feeding push rod 91 and a discharging push rod 92 which are slidably arranged on the screw 2, and a switching mechanism is arranged on the moving path of the feeding push rod 91 and the discharging push rod 92. Component 10, the pushing component 9 is used for the loading push rod 91 to push the un-indented aluminum tube 3 on the loading conveyor belt 4 onto the roller 6, while the unloading push rod 92 pushes the aluminum tube 3 that has been indented at the other side roller 6 onto the unloading conveyor belt 5, the water injection component 8 is used to seal the port of the aluminum tube 3 on the roller 6 and then inject water into its inner cavity, the indentation component 7 is used to indent the aluminum tube 3 after water injection, and the switching component 10 is used for the loading push rod 91 and the unloading push rod 92 to load and unload at the loading conveyor belt 4 and the roller 6 on one side, and then rotate 180° to switch to the loading conveyor belt 4 and the roller 6 on the other side.

[0034] like Figures 7 to 9As shown, the push assembly 9 also includes a nut 93 slidably arranged on the screw 2, a loading sleeve 94 rotatably arranged on the nut 93, a discharging sleeve 95 rotatably arranged on the loading sleeve 94, a slide rod 96 fixedly arranged on both sides of the loading push rod 91 and the discharging push rod 92, a slide rail 97 fixedly arranged on both sides of the screw 2, and a slide groove 98 opened on the slide rail 97, the loading push rod 91 is fixedly arranged on the loading sleeve 94, the discharging push rod 92 is fixedly arranged on the discharging sleeve 95, the slide rod 96 cooperates with the slide groove 98, a fixed shaft 99 is arranged on the screw 2 and the discharging sleeve 95 is slidably arranged on the fixed shaft 99, wherein the loading push rod The initial positions of 91 and the unloading push rod 92 are respectively located between the loading conveyor belt 4 on one side and the loading conveyor belt 4 and the roller 6 on the opposite side. When in use, after the aluminum tube 3 on the roller 6 on one side is indented, the motor 1 drives the screw 2 to rotate, so that the nut 93 pushes the loading push rod 91, the unloading push rod 92, and the slide bar 96 to slide in the slide groove 98, and the loading push rod 91 pushes the aluminum tube 3 on the loading conveyor belt 4 on the other side to the roller 6 for loading, and at the same time, the unloading push rod 92 pushes the aluminum tube 3 with completed indentation to the unloading conveyor belt 5 for unloading, and then the motor 1 reverses, driving the loading push rod 91 and the unloading push rod 92 to reset, thereby improving the loading and unloading efficiency.

[0035] like Figures 5 to 8As shown, the water injection assembly 8 includes a support column 81 fixedly arranged below the roller 6, a fixing frame 82 slidably arranged on the support column 81, a reciprocating screw rod 83 rotatably arranged in the fixing frame 82, a fixing rod 84 slidably arranged on both sides of the reciprocating screw rod 83, a cylinder 85 fixedly arranged on the fixing rod 84, a conical plug 86 fixedly arranged on the cylinder 85, a sliding sleeve 87 slidably arranged on the conical plug 86, and a sealing ring 88 fixedly arranged on the sliding sleeve 87. The sealing ring 88 cooperates with the pipe mouth of the aluminum tube 3, and the conical plug 86 is fixedly arranged on the sleeve 87. The conical plug 86 cooperates with the sealing ring 88, the water inlet pipe 11 is connected to the conical plug 86 on one side and the water outlet pipe 12 is connected to the conical plug 86 on the other side, and a spring is connected between the sliding sleeve 87 and the conical plug 86, wherein a cylinder is arranged below the fixed frame 82 to push the fixed frame 82 to move up and down, and a driving device is connected to the reciprocating screw rod 83 to drive the reciprocating screw rod 83 to rotate, thereby driving the conical plug 86 to move in the relative or opposite direction, and a one-way valve is arranged on the water inlet pipe 11 and the water blowing pipe 12 respectively, so that the water inlet pipe 11 and the water blowing pipe 12 are connected to the conical plug 86. Water can only flow in through the water pipe 11 but not out, and water can only flow out through the water outlet pipe 12 but not in. When in use, after the aluminum tube 3 is pushed onto the roller 6, the cylinder drives the fixing frame 82 and the two conical plugs 86 to rise until the center of the conical plug 86 is flush with the center of the aluminum tube 3, and then the driving device drives the reciprocating screw 83 to rotate, driving the two conical plugs 86 to slide relative to each other, and the conical plug 86 drives the sliding sleeve 87 and the sealing ring 88 to slide toward the tube mouth of the aluminum tube 3 until the sealing ring 88 fits with the inner wall of the aluminum tube 3, and the sliding sleeve 87 fits with the port, and then the fixing rod 84 continues to move, driving the two tapered plugs 86 to slide relative to each other until they fit with the sealing ring 88. After sealing the two ends of the aluminum tube 3, water flows into the inner cavity of the aluminum tube 3 from the water inlet pipe 11 until the inner cavity is filled, supporting the aluminum tube 3 to prevent deformation during indentation. When the indentation is completed, water flows out from the water outlet pipe 12, and then the driving device drives the reciprocating screw 83 to reverse, so that the tapered plug 86 and the sealing ring 88 are separated from the aluminum tube 3, and descend to the bottom of the roller 6 under the action of the cylinder to prevent interference with the loading and unloading of the aluminum tube 3.

[0036] like Figure 2 As shown, the indentation assembly 7 includes a fixed column 71, a screw rod 72 rotatably set on the fixed column 71, and an indentation plate 73 slidably set on the screw rod 72. The indentation plate 73 cooperates with the aluminum tube 3, wherein the two screw rods 72 are respectively connected with a driving device to drive the screw rod 72 to rotate forward and reverse, so that the indentation plate 73 moves back and forth.

[0037] like Figures 3 to 10As shown, the switching assembly 10 includes a first bevel gear 101 fixedly arranged on the feeding sleeve 94, a second bevel gear 102 fixedly arranged on the unloading sleeve 95, a fixing sleeve 103 sleeved on the feeding sleeve 95 and the unloading sleeve 96, a connecting frame 104 fixedly arranged on the fixing sleeve 103, a servo motor 105 fixedly arranged on the connecting frame 104, and a third bevel gear 106 fixedly arranged on the servo motor 105. The third bevel gear 106 is meshed with the first bevel gear 101 and the second bevel gear 105. The connecting frame 104 The slide is arranged on the slide rail 97. When in use, when the loading push rod 91 and the unloading push rod 92 complete loading and unloading and are reset, the servo motor 105 drives the third bevel gear 106 to rotate, drives the first bevel gear 101 and the second bevel gear 102 to rotate oppositely, drives the loading push rod 91 and the unloading push rod 92 to rotate 180° upward, and after switching the positions of the loading push rod 91 and the unloading push rod 92, the aluminum tube 3 on the loading conveyor belt 4 on the other side is loaded while the aluminum tube 3 on the opposite side that has completed indentation is unloaded, thereby improving the indentation efficiency of the aluminum tube 3.

[0038] like Figure 1 As shown, a rubber layer is provided on both the loading push rod 91 and the unloading push rod 92 to protect the aluminum tube 3 and prevent the aluminum tube 3 from being damaged.

[0039] like Figure 8 As shown, the tapered plug 86 is made of a flexible material to prevent the aluminum tube 3 from being deformed when the end of the aluminum tube 3 is sealed.

[0040] Embodiment 2

[0041] like Figure 1 As shown, the components that are the same as or corresponding to those in the first embodiment are marked with the corresponding figure marks in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The difference between the second embodiment and the first embodiment is that an arc plate 13 is provided on both the loading conveyor belt 4 and the unloading conveyor belt 5.

[0042] Here, in this embodiment, arc plates 13 are provided on both the loading conveyor belt 4 and the unloading conveyor belt 5 to play a positioning role for the aluminum tube 3 .

[0043] Working process

[0044] When the aluminum tube 3 on the roller 6 on one side is indented, the motor 1 drives the screw 2 to rotate, so that the nut 93 pushes the loading push rod 91, the unloading push rod 92, and the slide rod 96 to slide in the slide groove 98, and the loading push rod 91 pushes the aluminum tube 3 on the loading conveyor belt 4 on the other side to the roller 6 for loading, and at the same time, the unloading push rod 92 pushes the aluminum tube 3 with completed indentation to the unloading conveyor belt 5 for unloading, and then the motor 1 reverses to drive the loading push rod 91 and the unloading push rod 92 to reset. During the resetting process, the cylinder The fixing frame 82 and the two conical plugs 86 are driven to rise until the center of the conical plug 86 is flush with the center of the aluminum tube 3. Then the driving device drives the reciprocating screw 83 to rotate, driving the two conical plugs 86 to slide relative to each other. The conical plug 86 drives the sliding sleeve 87 and the sealing ring 88 to slide toward the tube mouth of the aluminum tube 3 until the sealing ring 88 fits with the inner wall of the aluminum tube 3 and the sliding sleeve 87 fits with the port. Then the fixing rod 84 continues to move, driving the two conical plugs 86 to slide relative to each other until they fit with the sealing ring 88. After the two ends of the aluminum tube 3 are sealed, water flows from the water inlet pipe 11 into the inner cavity of the aluminum tube 3 until the inner cavity is filled, which supports the aluminum tube 3. Then the driving device drives the screw 72 to rotate, so that the indentation plate 73 moves toward the aluminum tube 3, driving the aluminum tube 3 to rotate and indent the aluminum tube 3. After the indentation is completed, water flows out from the water outlet pipe 12, and then the driving device drives the reciprocating screw 83 to reverse, so that the tapered plug 86 and the sealing ring 88 are separated from the aluminum tube 3, and they are lowered to the bottom of the roller 6 under the action of the cylinder to prevent The servo motor 105 drives the third bevel gear 108 to rotate while the indentation is completed, and drives the first bevel gear 101 and the second bevel gear 102 to rotate in the opposite direction, and drives the loading push rod 91 and the unloading push rod 92 to rotate 180° upward. After switching the positions of the loading push rod 91 and the unloading push rod 92, the aluminum tube 3 on the corresponding loading conveyor belt 4 is loaded and the aluminum tube 3 that has completed the indentation is unloaded at the same time, and the loading and unloading are completed alternately, thereby improving the efficiency and quality of the aluminum tube indentation.

[0045] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0046] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0047] The above description in conjunction with the accompanying drawings is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiment. It should be pointed out that for those skilled in the art, various modifications and improvements can be made without departing from the structure of the present invention, which should also be regarded as the scope of protection of the present invention and will not affect the effect and practicality of the implementation of the present invention.

Claims

1. An automatic indentation device for aluminum tubes of electric power fittings, comprising a motor (1) and a screw (2) fixedly mounted on the motor (1), characterized in that: A loading conveyor belt (4) and a unloading conveyor belt (5) for conveying aluminum tubes (3) are symmetrically arranged on both sides of the screw (2); a roller (6) is arranged between the loading conveyor belt (4) and the unloading conveyor belt (5); an indentation assembly (7) is arranged on one side of the roller (6); a water injection assembly (8) is arranged below the roller (6); a pushing assembly (9) is arranged on the screw (2); the pushing assembly (9) includes a loading push rod (91) and a unloading push rod (92) slidably arranged on the screw (2); a switching assembly (10) is arranged on the moving path of the loading push rod (91) and the unloading push rod (92); the pushing assembly (9) is used for loading The push rod (91) pushes the aluminum tube (3) that has not been indented on the loading conveyor belt (4) onto the roller (6), while the unloading push rod (92) pushes the aluminum tube (3) that has been indented on the roller (6) on the other side onto the unloading conveyor belt (5). The water injection component (8) is used to seal the port of the aluminum tube (3) on the roller (6) and then inject water into its inner cavity. The indentation component (7) is used to indent the aluminum tube (3) after water injection. The switching component (10) is used for the loading push rod (91) and the unloading push rod (92) to load and unload at one side of the loading conveyor belt (4) and the roller (6), and then rotate 180 degrees to switch to the other side of the loading conveyor belt (4) and the roller (6).

2. The automatic indentation device for aluminum tubes of electric power fittings according to claim 1 is characterized by: The push assembly (9) also includes a nut (93) slidably arranged on the screw (2), a loading sleeve (94) rotatably arranged on the nut (93), a unloading sleeve (95) rotatably arranged on the loading sleeve (94), a sliding rod (96) fixedly arranged on both sides of the loading push rod (91) and the unloading push rod (92), a sliding rail (97) fixedly arranged on both sides of the screw (2), and a sliding groove (98) opened on the sliding rail (97); the loading push rod (91) is fixedly arranged on the loading sleeve (94), the unloading push rod (92) is fixedly arranged on the unloading sleeve (95), the sliding rod (96) cooperates with the sliding groove (98), a fixed shaft (99) is arranged on the screw (2), and the unloading sleeve (95) is slidably arranged on the fixed shaft (99).

3. The automatic indentation device for aluminum tubes of electric power fittings according to claim 1 is characterized by: The water injection assembly (8) comprises a support column (81) fixedly arranged below the roller (6), a fixed frame (82) slidably arranged on the support column (81), a reciprocating screw (83) rotatably arranged in the fixed frame (82), a fixed rod (84) slidably arranged on both sides of the reciprocating screw (83), a cylinder (85) fixedly arranged on the fixed rod (84), a conical plug (86) fixedly arranged on the cylinder (85), a sliding sleeve (87) slidably arranged on the conical plug (86), and a sealing ring (88) fixedly arranged on the sliding sleeve (87); the sealing ring (88) matches with the pipe mouth of the aluminum tube (3); the conical plug (86) matches with the sealing ring (88); a water inlet pipe (11) is connected to the conical plug (86) on one side and a water outlet pipe (12) is connected to the conical plug (86) on the other side; and a spring is connected between the sliding sleeve (87) and the conical plug (86).

4. The automatic indentation device for aluminum tubes of power fittings according to claim 1 is characterized by: The indentation assembly (7) comprises a fixed column (71), a screw rod (72) rotatably arranged on the fixed column (71), and an indentation plate (73) slidably arranged on the screw rod (72), wherein the indentation plate (73) cooperates with the aluminum tube (3).

5. The automatic indentation device for aluminum tubes of electric power fittings according to claim 2 is characterized by: The switching assembly (10) comprises a first bevel tooth (101) fixedly arranged on a loading sleeve (94), a second bevel tooth (102) fixedly arranged on a unloading sleeve (95), a fixing sleeve (103) sleeved on the loading sleeve (94) and the unloading sleeve (95), a connecting frame (104) fixedly arranged on the fixing sleeve (103), a servo motor (105) fixedly arranged on the connecting frame (104), and a third bevel tooth (106) fixedly arranged on the servo motor (105); the third bevel tooth (106) is meshed with the first bevel tooth (101) and the second bevel tooth (105); and the connecting frame (104) is slidably arranged on a slide rail (97).

6. The automatic indentation device for aluminum tubes of electric power fittings according to claim 1 is characterized by: The loading push rod (91) and the unloading push rod (92) are both provided with a rubber layer.

7. The automatic indentation device for aluminum tubes of electric power fittings according to claim 3 is characterized by: The conical plug (86) is made of a flexible material.

8. The automatic indentation device for aluminum tubes of electric power fittings according to claim 1 is characterized by: The loading conveyor belt (4) and the unloading conveyor belt (5) are both provided with arc-shaped plates (13).

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