Bending machine with automatic cutter splicing structure

Abstract

According to the bending machine with the automatic cutter splicing structure, two servo motors drive corresponding lead screws to rotate back and forth, an existing hydraulic driving mode is replaced, the response speed of the motor driving mode is high, the position precision is high, and therefore the bending precision of metal plates is guaranteed. The whole structure is simpler, and more oil way structures are not needed; maintenance and installation are convenient, and noise is lower during working. The first adjusting tool set is arranged on the sliding block in a vertical back-and-forth overturning mode in cooperation with the first adjusting tool set, the second adjusting tool set can be transversely and movably arranged on the sliding block and located beside the first adjusting tool set, and therefore tools of the proper size can be automatically spliced according to the size of a specifically machined product, and manual tool changing is not needed. And the bending efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technology of bending machine field, in particular to a bending machine with an automatic blade splicing structure. Background Art

[0002] A bending machine is a machine that can bend thin plates. Its structure mainly includes a frame, a hydraulic system, an electrical system, a slider mechanism, a synchronization mechanism, an upper and lower die mechanism, a rear stopper, a front support frame, etc. The upper and lower die mechanisms include an upper pressure knife assembly and a lower bending die. According to different bending requirements, the corresponding upper and lower bending dies are customized. During the working process, the slider needs to be driven up and down to move back and forth so that the tool can complete the bending operation of the product.

[0003] The existing bending machine slider generally uses a hydraulic drive to drive the slider up and down. The hydraulic transmission method not only has a slow response speed, resulting in low bending accuracy, but also the oil circuit of the hydraulic system is relatively complicated and inconvenient to maintain. In addition, the hydraulic transmission method generates a lot of noise during the operation process, which affects the operator's working environment. At the same time, when the bending machine bends products of different sizes, it is necessary to manually replace tools of different sizes to complete the bending process, which affects the efficiency of the bending process; therefore, it is necessary to further improve the existing bending machine structure. Utility Model Content

[0004] In view of this, the utility model aims to solve the deficiencies in the prior art, and its main purpose is to provide a bending machine with an automatic blade structure, which can effectively solve the problems of low bending precision, inconvenient maintenance process, high working noise and low bending processing efficiency of the existing bending machines.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bending machine with an automatic knife-splitting structure comprises a frame, a controller, a slider, two screw rods, two servo motors, two nut seats, two fixed sleeves and a knife-splitting assembly; a lower knife seat is arranged on the frame; the controller is arranged on the frame; the slider can be movably arranged on the frame and is located above the lower knife seat; the two screw rods are arranged left and right and can be rotatably arranged on the frame; the two servo motors are arranged on the frame and are respectively connected to the controller, and the two servo motors drive the corresponding screw rods to rotate back and forth; the two nut seats are respectively sleeved on the lower ends of the corresponding screw rods and move up and down back and forth with the rotation of the screw rod; the two fixed sleeves are sleeved and fixed on the corresponding nut seats and move up and down back and forth with the nut seats, and the lower ends of the two fixed sleeves are respectively fixed to the left and right sides of the slider to drive the slider up and down The tool assembly is arranged on the slider and moves back and forth with the slider, the tool assembly is located directly above the lower tool seat, and the tool assembly is connected to the controller; the tool assembly includes a first adjusting tool group, a first tool changing drive unit, a second adjusting tool group and a second tool changing drive unit; the first adjusting tool group can be turned up and down and back and forth on the slider, the first adjusting tool group includes a plurality of first tools arranged in sequence; the first tool changing drive unit is arranged on the slider and drives the first adjusting tool group to turn up and down; the second adjusting tool group can be turned back and forth laterally on the slider and is located beside the first adjusting tool group, the second adjusting tool group includes a plurality of second tools arranged in sequence laterally; the second tool changing drive unit is arranged on the slider and drives the second adjusting tool group to move back and forth laterally.

[0007] As a preferred solution, the frame is provided with two slide rails arranged left and right, and each fixed sleeve is provided with a slide seat cooperating with the slide rail. The fixed sleeve moves up and down back and forth through the cooperation between the slide seat and the slide rail and driven by the nut seat.

[0008] As a preferred solution, two fixing grooves extending up and down are respectively opened on the left and right sides of the slider, the upper end of the fixing groove is semicircular, and each fixing groove has a semicircular block on the upper end, and a first connecting hole extending up and down is penetrated in the semicircular block, and a second connecting hole penetrates the upper end surface of the slider and the upper inner wall of the fixing groove, and the second connecting hole is directly opposite to the first connecting hole up and down; the lower ends of the two fixing sleeves are provided with an end cover, and the lower end surface of each end cover is integrally concavely provided with a semicircular adapter groove inwardly, and a semicircular ball head is provided in the adapter groove. A third connecting hole extending up and down is penetrated in the ball head, and the third connecting hole is directly opposite to the second connecting hole up and down, and the upper bottom surface of the adapter groove is penetrated upward by the first fixing hole, and the first fixing hole is directly opposite to the third connecting hole, and a first fixing bolt passes through the first connecting hole, the second connecting hole, the third connecting hole and the first fixing hole in sequence from bottom to top, so as to fix the fixing sleeve and the slider together, wherein the diameters of the first connecting hole, the second connecting hole and the third connecting hole are all larger than the diameter of the first fixing bolt.

[0009] As a preferred solution, the output end of the servo motor is connected to a first synchronous wheel, and a second synchronous wheel is provided at the upper end of the screw rod. The first synchronous wheel and the second synchronous wheel are connected by a synchronous belt, and the servo motor drives the screw rod to rotate back and forth through the transmission of the synchronous belt.

[0010] As a preferred solution, the fixed sleeve is a steel pipe.

[0011] As a preferred scheme, the first tool changing drive unit includes a mounting seat, a movable frame, a first driving mechanism, a flipping shaft, a movable shaft and a second driving mechanism; the mounting seat is arranged on the slider and is located beside the first adjusting tool group, and the mounting seat has a receiving groove; the movable frame can be arranged on the mounting seat so as to move back and forth laterally; the first driving mechanism is arranged on the mounting seat and drives the movable frame to move back and forth; the flipping shaft can be arranged on the movable frame so as to flip back and forth and move back and forth laterally with the movable frame; the movable shaft is arranged at the outer end of the flipping shaft and moves back and forth laterally with the flipping shaft, the flipping shaft can flip back and forth relative to the movable shaft, and the second driving mechanism is arranged on the movable frame and drives the flipping shaft to rotate back and forth; the aforementioned multiple first tools are hung on the movable shaft and the flipping shaft and are located in the receiving groove, and the multiple first tools are inserted into or disengaged from the flipping shaft as the movable shaft and the flipping shaft move, and the first tool inserted into the flipping shaft is driven by the flipping shaft to flip up and down.

[0012] As a preferred solution, a first limiting portion is provided on the first tool, a first limiting groove cooperating with the first limiting portion is recessed on the flip shaft, a second limiting groove cooperating with the first limiting portion is recessed on the movable shaft, the first tool is inserted into or detached from the flip shaft through the cooperation of the first limiting portion, the first limiting groove and the second limiting groove, and a second limiting portion cooperating with the second limiting groove is convexly provided on the side wall of the accommodating groove.

[0013] As a preferred solution, the second adjusting tool group is set in two, and the two second adjusting tool groups are respectively set on both sides of the first adjusting tool group; correspondingly, the second tool changing drive unit is set in two, and each second tool changing drive unit drives the corresponding second adjusting tool group to move back and forth.

[0014] As a preferred solution, each second tool is provided with two limit rods arranged laterally at intervals, and a limit groove is sandwiched between the two limit rods; the second tool changing drive unit includes a conveyor belt, a third drive mechanism, a transmission seat, a limit head and a fourth drive mechanism; the conveyor belt extends laterally and is arranged on the slider to rotate back and forth and is located above the second adjustment tool group; the third drive mechanism is arranged on the slider and drives the conveyor belt to rotate back and forth; the transmission seat is arranged on the conveyor belt and moves back and forth laterally with the conveyor belt; the limit head is arranged on the transmission seat to be able to move up and down and back and forth and move back and forth with the transmission seat, and the limit head can move downward into the limit groove; the fourth drive mechanism is arranged on the transmission seat and drives the limit head to move up and down back and forth.

[0015] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0016] The two servo motors drive the corresponding screw rods to rotate back and forth, and the two nut seats are respectively sleeved on the lower ends of the corresponding screw rods and move up and down as the screw rods rotate; the two fixed sleeves are sleeved and fixed on the corresponding nut seats and move up and down as the nut seats move back and forth, and the lower ends of the two fixed sleeves are respectively fixed to the left and right sides of the slider to drive the slider to move up and down, so that the servo motor drive mode replaces the existing hydraulic drive mode. The motor drive mode has a fast response speed and high position accuracy, thereby ensuring the accuracy of sheet metal bending; at the same time, the overall structure is simpler, no more oil circuit structures are required, maintenance and installation are convenient, and the noise during work is also smaller; and in conjunction with the first adjusting tool group, it can be set on the slider to be flipped up and down, and the second adjusting tool group can be set on the slider to move back and forth horizontally and is located on the side of the first adjusting tool group, so that it can automatically splice tools of suitable sizes according to the specific size of the processed products, without manual tool change; the overall bending efficiency is effectively improved.

[0017] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the utility model;

[0019] Figure 2 It is a partial assembly diagram of a preferred embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of a preferred embodiment of the utility model;

[0021] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the blade assembly in the preferred embodiment of the utility model;

[0023] Figure 6 It is a partial assembly diagram of the blade assembly in the preferred embodiment of the utility model;

[0024] Figure 7 This is another partial assembly diagram of the blade assembly in the preferred embodiment of the utility model;

[0025] Figure 8 yes Figure 7 The enlarged schematic diagram of point B in the middle;

[0026] Fig. 9 A schematic diagram of the three-dimensional structure of the first tool in the preferred embodiment of the present utility model.

[0027] Description of the accompanying drawings:

[0028] 10. Frame 11. Lower knife seat

[0029] 12. Slide rail 20. Controller

[0030] 30. Slider 301. Fixed groove

[0031] 302, first connection hole 303, second connection hole

[0032] 31. Semicircular block 40. Screw rod

[0033] 41. Second synchronous wheel 50. Servo motor

[0034] 51. First synchronous wheel 60. Nut seat

[0035] 70. Fixed sleeve 701. Adapter slot

[0036] 702, third connection hole 703, first fixing hole

[0037] 71. Sliding seat 72. End cover

[0038] 73. Ball head 74. First fixing bolt

[0039] 80. Knife assembly 801. Accommodation slot

[0040] 802, first limiting groove 803, second limiting groove

[0041] 804, third limiting groove 81, first adjustment tool set

[0042] 811, first tool 812, first limiter

[0043] 82. First tool change drive unit 821. Mounting seat

[0044] 822. movable frame 823. first driving mechanism

[0045] 824, flip axis 825, move axis

[0046] 826. Second driving mechanism 827. Second limiting portion

[0047] 83. Second adjustment tool set 831. Second tool

[0048] 832, limit rod

[0049] 84. Second tool change drive unit 841. Conveyor belt

[0050] 842. Third driving mechanism 843. Transmission seat

[0051] 844. Limiting head 845. Fourth driving mechanism. DETAILED DESCRIPTION

[0052] Please refer to Figures 1 to 9 As shown, it shows the specific structure of the preferred embodiment of the utility model, which includes a frame 10, a controller 20, a slider 30, two screw rods 40, two servo motors 50, two nut seats 60, two fixed sleeves 70 and a knife assembly 80.

[0053] The frame 10 is provided with a lower knife seat 11 ; the controller 20 is provided on the frame 10 ; in the present embodiment, the frame 10 is provided with two slide rails 12 arranged left and right.

[0054] The slider 30 is movably arranged on the frame 10 and is located above the lower knife seat 11. In this embodiment, two fixing grooves 301 extending up and down are respectively provided on the left and right sides of the slider 30. The upper ends of the fixing grooves 301 are semicircular. Each fixing groove 301 has a semicircular block 31 at the upper end. A first connecting hole 302 extending up and down is penetrated in the semicircular block 31. A second connecting hole 303 penetrates the upper end surface of the slider 30 and the upper inner wall of the fixing groove 301. The second connecting hole 303 is directly opposite to the first connecting hole 302 up and down.

[0055] The two screw rods 40 are arranged left and right and are rotatably disposed on the frame 10 . In this embodiment, a second synchronous wheel 41 is disposed at the upper end of the screw rod 40 .

[0056] The two servo motors 50 are arranged on the frame 10 and are respectively connected to the controller 20. The two servo motors 50 drive the corresponding screw rods 40 to rotate back and forth, so that the servo motors 50 drive the existing hydraulic transmission mode instead of the existing hydraulic transmission mode. The motor transmission mode not only has a faster response speed, thereby higher bending accuracy, but also does not require a complex oil circuit structure, and the assembly and maintenance processes are more convenient. In this embodiment, the output end of the servo motor 50 is connected to the first synchronous wheel 51; the first synchronous wheel 51 and the second synchronous wheel 41 are connected by a synchronous belt (not shown in the figure), and the servo motor 50 drives the screw rod 40 to rotate back and forth through the transmission mode of the synchronous belt.

[0057] The two nut seats 60 are respectively sleeved on the lower ends of the corresponding screw rods 40 and move up and down as the screw rods 40 rotate.

[0058] The two fixed sleeves 70 are fixed on the corresponding nut seats 60 and move up and down with the nut seats 60, and the lower ends of the two fixed sleeves 70 are respectively fixed to the left and right sides of the slider 30 to drive the slider 30 to move up and down. In this embodiment, each fixed sleeve 70 is provided with a slide seat 71 that cooperates with the slide rail 12, and the fixed sleeve 70 moves up and down driven by the nut seat 60 through the cooperation of the slide seat 71 and the slide rail 12. The lower ends of the two fixed sleeves 70 are each provided with an end cover 72, and the lower end surface of each end cover 72 is integrally provided with a semicircular adapter groove 701 concave inwardly, and a semicircular ball head 73 is provided in the adapter groove 701, and a third connecting hole 702 extending up and down is penetrated in the ball head 73, and the third connecting hole 702 is vertically opposite to the second connecting hole 303, and the upper bottom surface of the adapter groove 701 is penetrated with a first fixing hole 703 upward, and the first fixing hole 703 is opposite to the third connecting hole 702, and a first fixing bolt 74 passes through the first connecting hole 302 and the second connecting hole 303 from bottom to top in sequence. , the third connection hole 702 and the first fixing hole 703 are used to fix the fixing sleeve 70 and the slider 30 together, wherein the diameters of the first connection hole 302, the second connection hole 303 and the third connection hole 702 are all larger than the diameter of the first fixing bolt 74, so that when the slider 30 moves up and down, it can also be controlled separately by two servo motors 50, and the cooperation between the semicircular block 31 and the upper end of the fixing groove 301, and the cooperation between the ball head 73 and the adapter groove 701, so that the slider 30 can move left and right in linkage or separately, which is convenient for the later installation and debugging of the equipment and the use of special working conditions. The fixing sleeve 70 is a steel pipe.

[0059] The knife assembly 80 is arranged on the slider 30 and moves back and forth with the slider 30. The knife assembly 80 is located directly above the lower knife seat 11, and the knife assembly 80 is connected to the controller 20; the knife assembly 80 includes a first adjustment tool group 81, a first tool change drive unit 82, a second adjustment tool group 83 and a second tool change drive unit 84; the first adjustment tool group 81 can be set on the slider 30 to be flipped up and down, and the first adjustment tool group 81 includes a plurality of first tools 811 arranged in sequence; the first tool change drive unit 82 is arranged on the slider 30 and drives the first adjustment tool group 81 to flip up and down; the second adjustment tool group 83 can be set on the slider 30 to move back and forth laterally and is located on the side of the first adjustment tool group 81, and the second adjustment tool group 83 includes a plurality of second tools 831 arranged in sequence laterally; the second tool change drive unit 84 is arranged on the slider 30 and drives the second adjustment tool group 83 to move back and forth laterally.

[0060] In this embodiment, the first tool change drive unit 82 includes a mounting seat 821, a movable frame 822, a first drive mechanism 823, a flip shaft 824, a moving shaft 825 and a second drive mechanism 826; the mounting seat 821 is arranged on the slider 30 and is located beside the first adjustment tool group 81, and the mounting seat 821 has a receiving groove 801; the movable frame 822 can be arranged on the mounting seat 821 to move back and forth laterally; the first drive mechanism 823 is arranged on the mounting seat 821 and drives the movable frame 822 to move back and forth; the flip shaft 824 is arranged on the movable frame 822 to flip back and forth and is arranged on the movable frame 822 to move back and forth with the movement The frame 822 moves back and forth laterally; the movable shaft 825 is arranged at the outer end of the flip shaft 824 and moves back and forth laterally with the flip shaft 824, and the flip shaft 824 can flip back and forth relative to the movable shaft 825, and the second driving mechanism 826 is arranged on the movable frame 822 and drives the flip shaft 824 to rotate back and forth; the aforementioned multiple first tools 811 are hung on the movable shaft 825 and the flip shaft 824 and are located in the accommodating groove 801, and the multiple first tools 811 move with the movable shaft 825 and the flip shaft 824 and are stuck in or detached from the flip shaft 824, and the first tool stuck in the flip shaft 824 is driven by the flip shaft 824 to flip up and down. The first tool 811 is provided with a first limiting portion 812, the flip shaft 824 is provided with a first limiting groove 802 which cooperates with the first limiting portion 812, and the movable shaft 825 is provided with a second limiting groove 803 which cooperates with the first limiting portion 812. The first tool 811 is inserted into or detached from the flip shaft 824 through the cooperation of the first limiting portion 812, the first limiting groove 802 and the second limiting groove 803, and the side wall of the accommodating groove 801 is provided with a second limiting portion 827 which cooperates with the second limiting groove 803. The second limiting portion 827 is used to prevent the movable shaft 825 from rotating by cooperating with the second limiting groove 803.

[0061] The second adjustment tool set 83 is provided in two configurations, and the two second adjustment tool sets 83 are respectively provided on both sides of the first adjustment tool set 81; correspondingly, the second tool change drive unit 84 is provided in two configurations, and each second tool change drive unit 84 drives the corresponding second adjustment tool set 83 to move back and forth. Each second tool 831 is provided with two horizontally spaced limiting rods 832, and a third limiting groove 804 is sandwiched between the two limiting rods 832; the second tool change drive unit 84 includes a conveyor belt 841, a third driving mechanism 842, a transmission seat 843, a limiting head 844 and a fourth driving mechanism 845; the conveyor belt 841 extends horizontally and is provided on the slider 30 to rotate back and forth and is located above the second adjustment tool set 83; the third driving mechanism 842 is provided on the slider 30 and drives the conveyor belt 841 to rotate back and forth; the transmission seat 843 is provided on the conveyor belt 841 and rotates with the conveyor belt 84 1 moves back and forth horizontally; the limit head 844 can be movably arranged on the transmission seat 843 so as to move up and down and back and forth and move back and forth with the transmission seat 843, and the limit head 844 can move downward and extend into the third limit groove 804; the fourth driving mechanism 845 is arranged on the transmission seat 843 and drives the limit head 844 to move up and down, and extends downward into the corresponding third limit groove 804 through the limit head 844, and then drives the conveyor belt 841 to drive through the third driving mechanism 842, thereby driving the corresponding number of second knives 831 to move toward the first adjustment tool group 81, so as to cooperate with the first adjustment tool group 81 to complete the knife splicing process.

[0062] The design focus of the utility model is that: the two servo motors drive the corresponding screw rods to rotate back and forth, and the two nut seats are respectively sleeved on the lower ends of the corresponding screw rods and move up and down with the rotation of the screw rods; the two fixed sleeves are sleeved and fixed on the corresponding nut seats and move up and down with the nut seats, and the lower ends of the two fixed sleeves are respectively fixed to the left and right sides of the slider to drive the slider to move up and down, so that the existing hydraulic drive mode is replaced by the drive mode of the servo motor. The motor drive mode has a fast response speed and high position accuracy, thereby ensuring the accuracy of sheet metal bending; at the same time, the overall structure is simpler, no more oil circuit structures are required, maintenance and installation are convenient, and the noise during work is also smaller; and the first adjusting tool group can be set on the slider to be flipped up and down, and the second adjusting tool group can be set on the slider to move back and forth horizontally and located on the side of the first adjusting tool group, so that it can automatically splice a tool of a suitable size according to the specific size of the processed product, without manual tool change; the overall bending efficiency is effectively improved.

[0063] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bending machine with an automatic blade assembly structure, characterized in that: The invention comprises a frame, a controller, a slider, two screw rods, two servo motors, two nut seats, two fixed sleeves and a knife assembly; a lower knife seat is arranged on the frame; the controller is arranged on the frame; the slider can be movably arranged on the frame and is located above the lower knife seat; the two screw rods are arranged left and right and can be rotatably arranged on the frame; the two servo motors are arranged on the frame and are respectively connected to the controller, and the two servo motors drive the corresponding screw rods to rotate back and forth; the two nut seats are respectively sleeved on the lower ends of the corresponding screw rods and move up and down with the rotation of the screw rods; the two fixed sleeves are sleeved and fixed on the corresponding nut seats and move up and down with the nut seats, and the lower ends of the two fixed sleeves are respectively fixed to the left and right sides of the slider to drive the slider to move up and down; the knife assembly comprises a plurality of fixed sleeves, ... The component is arranged on the slider and moves back and forth with the slider, the jigsaw knife component is located directly above the lower knife seat, and the jigsaw knife component is connected to the controller; the jigsaw knife component includes a first adjusting tool group, a first tool changing drive unit, a second adjusting tool group and a second tool changing drive unit; the first adjusting tool group can be set on the slider so as to be flipped up and down and back and forth, and the first adjusting tool group includes a plurality of first tools arranged in sequence; the first tool changing drive unit is arranged on the slider and drives the first adjusting tool group to flip up and down; the second adjusting tool group can be set on the slider so as to be movable back and forth laterally and is located beside the first adjusting tool group, and the second adjusting tool group includes a plurality of second tools arranged in sequence laterally; the second tool changing drive unit is arranged on the slider and drives the second adjusting tool group to move back and forth laterally.

2. The bending machine with automatic blade splicing structure according to claim 1 is characterized in that: The frame is provided with two slide rails arranged left and right, and each fixed sleeve is provided with a slide seat matched with the slide rail. The fixed sleeve moves back and forth up and down driven by the nut seat through the cooperation between the slide seat and the slide rail.

3. The bending machine with automatic blade splicing structure according to claim 1 is characterized in that: The left and right sides of the slider are respectively provided with two fixing grooves extending up and down, the upper end of the fixing groove is semicircular, and each fixing groove has a semicircular block at the upper end, and a first connecting hole extending up and down is penetrated in the semicircular block, and a second connecting hole penetrates the upper end surface of the slider and the upper inner wall of the fixing groove, and the second connecting hole is directly opposite to the first connecting hole up and down; the lower ends of the two fixing sleeves are provided with an end cover, and the lower end surface of each end cover is integrally concavely provided with a semicircular adapter groove inwardly, and a semicircular ball head is provided in the adapter groove. A third connecting hole extending up and down is penetrated in the ball head, and the third connecting hole is directly opposite to the second connecting hole up and down, and the upper bottom surface of the adapter groove is penetrated upwardly with a first fixing hole, and the first fixing hole is directly opposite to the third connecting hole, and a first fixing bolt passes through the first connecting hole, the second connecting hole, the third connecting hole and the first fixing hole in sequence from bottom to top, so as to fix the fixing sleeve and the slider together, wherein the diameters of the first connecting hole, the second connecting hole and the third connecting hole are all larger than the diameter of the first fixing bolt.

4. The bending machine with automatic blade splicing structure according to claim 1 is characterized in that: The output end of the servo motor is connected to a first synchronous wheel, the upper end of the screw rod is provided with a second synchronous wheel, the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt, and the servo motor drives the screw rod to rotate back and forth through the transmission mode of the synchronous belt.

5. The bending machine with automatic blade splicing structure according to claim 1 is characterized in that: The fixed sleeve is a steel pipe.

6. The bending machine with automatic blade splicing structure according to claim 1, characterized in that: The first tool changing drive unit includes a mounting seat, a movable frame, a first driving mechanism, a flipping shaft, a movable shaft and a second driving mechanism; the mounting seat is arranged on the slider and is located beside the first adjusting tool group, and the mounting seat has a receiving groove; the movable frame can be arranged on the mounting seat so as to move back and forth laterally; the first driving mechanism is arranged on the mounting seat and drives the movable frame to move back and forth; the flipping shaft can be arranged on the movable frame so as to flip back and forth and move back and forth laterally with the movable frame; the movable shaft is arranged at the outer end of the flipping shaft and moves back and forth laterally with the flipping shaft, and the flipping shaft can flip back and forth relative to the movable shaft, and the second driving mechanism is arranged on the movable frame and drives the flipping shaft to rotate back and forth; the aforementioned multiple first tools are hung on the movable shaft and the flipping shaft and are located in the receiving groove, and the multiple first tools are inserted into or disengaged from the flipping shaft as the movable shaft and the flipping shaft move, and the first tool inserted into the flipping shaft is driven by the flipping shaft to flip up and down.

7. The bending machine with automatic blade splicing structure according to claim 6, characterized in that: A first limiting portion is provided on the first tool, a first limiting groove cooperating with the first limiting portion is concavely provided on the flip shaft, a second limiting groove cooperating with the first limiting portion is concavely provided on the movable shaft, the first tool is inserted into or detached from the flip shaft through the cooperation of the first limiting portion, the first limiting groove and the second limiting groove, and a second limiting portion cooperating with the second limiting groove is convexly provided on the side wall of the accommodating groove.

8. The bending machine with automatic blade splicing structure according to claim 1, characterized in that: There are two second adjustment tool groups, and the two second adjustment tool groups are respectively arranged on both sides of the first adjustment tool group; correspondingly, there are two second tool change drive units, and each second tool change drive unit drives the corresponding second adjustment tool group to move back and forth.

9. The bending machine with automatic blade splicing structure according to claim 1, characterized in that: Each second tool is provided with two limit rods arranged at intervals in the transverse direction, and a limit groove is sandwiched between the two limit rods; the second tool changing drive unit includes a conveyor belt, a third drive mechanism, a transmission seat, a limit head and a fourth drive mechanism; the conveyor belt extends transversely and is arranged on the slider to rotate back and forth and is located above the second adjustment tool group; the third drive mechanism is arranged on the slider and drives the conveyor belt to rotate back and forth; the transmission seat is arranged on the conveyor belt and moves back and forth laterally with the conveyor belt; the limit head is arranged on the transmission seat to be able to move up and down and back and forth and move back and forth with the transmission seat, and the limit head can move downward into the limit groove; the fourth drive mechanism is arranged on the transmission seat and drives the limit head to move up and down and back and forth.

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