Bending machine

Abstract

The utility model discloses a bending machine. The bending machine comprises a rack, a sliding block and a driving mechanism. A mounting space is defined by the rack, the sliding block is located in the mounting space and slidably connected with the rack, and the driving mechanism is arranged on the rack and connected with the sliding block so as to drive the sliding block to ascend and descend in the preset direction; the driving mechanism comprises a first driving part, a second driving part and an auxiliary driving part, and an execution part of the first driving part, an execution part of the second driving part and an execution part of the auxiliary driving part are arranged on the first surface of the sliding block at intervals in the first direction. The execution part of the auxiliary driving part is located between the execution part of the first driving part and the execution part of the second driving part; through cooperation of the first driving part, the second driving part and the auxiliary driving part, the auxiliary driving part can provide additional support in the area, with the large transverse span, of the sliding block, so that the sliding block can be evenly pressed downwards, pressure is evenly dispersed to the surface of a plate, and the consistency of machined workpieces is improved advantageously.

Description

Technical Field

[0001] This application relates to the field of processing equipment technology, and in particular to a bending machine. Background Technology

[0002] Bending machines, as commonly used equipment in the processing field, are widely used to form and shape sheet metal. With the rapid development of the processing and manufacturing industry, large-tonnage bending machines have also emerged. For large-tonnage bending machines, not only do they need to provide sufficient bending force, but they also need to have a large working surface. Correspondingly, the pressure slide of the bending machine used to provide bending force to the sheet metal also has a large size.

[0003] In related technologies, the power required for the lower slide of a bending machine is usually provided by the drive components on both sides of the lower slide. Due to the large size of the lower slide and the large lateral span between the two drive components, the pressure applied by the lower slide is difficult to be evenly distributed to the surface of the sheet metal, resulting in poor consistency of the processed workpiece. Utility Model Content

[0004] This application discloses a bending machine to solve the problem in related technologies where the pressure applied by the bending machine is difficult to distribute evenly to the surface of the sheet metal, resulting in poor consistency of the processed workpieces.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] This application discloses a bending machine, which includes a frame, a slider, and a drive mechanism.

[0007] The frame encloses an installation space, the slider is located within the installation space and is slidably connected to the frame, and the drive mechanism is located on the frame and connected to the slider to drive the slider to move up and down in a preset direction;

[0008] The slider has a first surface and a second surface facing away from each other. The first surface faces the mounting space, and the second surface faces away from the mounting space. The driving mechanism includes a first driving part, a second driving part, and an auxiliary driving part. The execution part of the first driving part, the execution part of the second driving part, and the execution part of the auxiliary driving part are respectively spaced apart on the first surface along a first direction, and the execution part of the auxiliary driving part is located between the execution part of the first driving part and the execution part of the second driving part.

[0009] Wherein, the first direction is perpendicular to the lifting direction of the slider.

[0010] Optionally, the drive mechanism further includes a torque synchronization module. The auxiliary drive unit is electrically connected to the first drive unit or the second drive unit through the torque synchronization module. The torque synchronization module is used to obtain the output torque of the first drive unit or the second drive unit and control the auxiliary drive unit to output with the output torque as the target output torque.

[0011] Optionally, the auxiliary drive unit includes a first auxiliary drive unit and a second auxiliary drive unit, wherein the execution portion of the first auxiliary drive unit and the execution portion of the second auxiliary drive unit are respectively disposed at intervals along the first direction on the first surface, and the first auxiliary drive unit is close to the first drive unit, and the second auxiliary drive unit is close to the second drive unit.

[0012] The torque synchronization module includes a first submodule and a second submodule. The first auxiliary drive unit is electrically connected to the first drive unit through the first submodule. The first submodule is used to acquire the first output torque of the first drive unit and control the first auxiliary drive unit to output with the first output torque as the target output torque. The second auxiliary drive unit is electrically connected to the second drive unit through the second submodule. The second submodule is used to acquire the second output torque of the second drive unit and control the second auxiliary drive unit to output with the second output torque as the target output torque.

[0013] Optionally, the first drive unit includes a first motor, a first motor drive circuit, and a first transmission assembly. The first motor is mounted on the frame and connected to the slider through the first transmission assembly. The first motor drive circuit is electrically connected to the first motor.

[0014] The second drive unit includes a second motor, a second motor drive circuit, and a second transmission assembly. The second motor is mounted on the frame and connected to the slider through the second transmission assembly. The second motor drive circuit is electrically connected to the second motor.

[0015] The first auxiliary drive unit includes a third motor, a third motor drive circuit, and a third transmission assembly. The third motor is mounted on the frame and is connected to the slider through the third transmission assembly. The third motor drive circuit is electrically connected to the third motor.

[0016] The second auxiliary drive unit includes a fourth motor, a fourth motor drive circuit, and a fourth transmission assembly. The fourth motor is mounted on the frame and is connected to the slider through the fourth transmission assembly. The fourth motor drive circuit is electrically connected to the fourth motor.

[0017] The first submodule is electrically connected to the first motor drive circuit and the third motor drive circuit, respectively, and the second submodule is electrically connected to the second motor drive circuit and the fourth motor drive circuit, respectively.

[0018] Optionally, the bending machine further includes a main control module, which is electrically connected to the first motor drive circuit and the second motor drive circuit respectively, and is used to control the first motor and the second motor to run synchronously.

[0019] Optionally, the bending machine further includes a position detection unit, which is located between the slider and the frame and electrically connected to the main control module. The main control module is used to control the output parameters of the first motor and / or the second motor based on the detection data from the position detection unit.

[0020] Optionally, the position detection unit includes a first detection unit and a second detection unit, and the slider has a first end face and a second end face that are opposite to each other along the first direction;

[0021] The first detection unit is located between the first end face and the frame, and is electrically connected to the main control module. The main control module is used to control the output parameters of the first motor according to the first detection data of the first detection unit.

[0022] The second detection unit is located between the second end face and the frame, and is electrically connected to the main control module. The main control module is used to control the output parameters of the second motor according to the second detection data of the second detection unit.

[0023] Optionally, the position detection unit includes a position ruler and a slider, the slider being slidably connected to the position ruler, one of the slider and the position ruler being connected to the frame, and the other of the slider and the position ruler being connected to the slider.

[0024] The slider is electrically connected to the main control module and is used to transmit the relative position information of the slider and the position ruler to the main control module.

[0025] Optionally, the bending machine further includes a worktable located below the frame. The worktable has a lower die on its surface and an upper die on the end face of the slider facing the worktable. When the slider moves up and down, the upper die moves away from or closer to the lower die.

[0026] Optionally, the first transmission assembly, the second transmission assembly, the third transmission assembly, and the fourth transmission assembly have the same structure and each includes a transmission belt, a lead screw, and a nut. The nut is threadedly connected to the slider to form a lead screw and nut pair. The nut is fixedly connected to the slider. The upper end of the lead screw is connected to the first motor, the second motor, the third motor, or the fourth motor via the transmission belt.

[0027] The technical solution adopted in this application can achieve the following technical effects:

[0028] The bending machine disclosed in this application improves upon related technologies. The disclosed bending machine includes a frame, a slider, and a drive mechanism. The frame encloses an installation space, the slider is located within the installation space and slidably connected to the frame, and the drive mechanism is mounted on the frame and connected to the slider to drive the slider to move up and down in a preset direction. The slider has a first surface and a second surface facing away from each other. The first surface faces the installation space, and the second surface faces away from the installation space. The drive mechanism includes a first drive unit, a second drive unit, and an auxiliary drive unit. The execution portions of the first drive unit, the second drive unit, and the auxiliary drive unit are respectively spaced apart along a first direction on the first surface, and the execution portion of the auxiliary drive unit is located between the execution portions of the first and second drive units. By utilizing the cooperation of the first drive unit, the second drive unit, and the auxiliary drive unit, the auxiliary drive unit can provide additional support and driving force in areas with a large lateral span of the slider, enabling the slider to be pressed down evenly and distributing the pressure evenly to the surface of the sheet metal, which is beneficial for improving the consistency of the processed workpiece. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the bending machine disclosed in the embodiments of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 110-Frame, 120-Slider, 121-Upper mold, 130-First drive unit, 131-First motor, 132-First transmission assembly, 1321-Transmission belt, 1322-Lead screw, 1323-Nut, 140-Second drive unit, 141-Second motor, 142-Second transmission assembly, 150-Auxiliary drive unit, 151-First auxiliary drive unit, 1511-Third motor, 1512-Third transmission assembly, 152-Second auxiliary drive unit, 1521-Fourth motor, 1522-Fourth transmission assembly, 160-Torque synchronization module, 161-First sub-module, 162-Second sub-module, 170-Main control module, 180-Position detection unit, 181-First detection unit, 182-Second detection unit, 183-Position ruler, 184-Slide mark, 190-Worktable, 191-Lower mold. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0033] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] The technical solutions disclosed in the various embodiments of this application are described in detail below with reference to the accompanying drawings.

[0035] Please refer to Figure 1 This application discloses a bending machine, which may include a frame 110, a slider 120, and a drive mechanism. The frame 110 is the structural foundation of the bending machine, enclosing an installation space. The slider 120 is located within the installation space and is slidably connected to the frame 110. For example, guide components such as slide rails and slide grooves can be provided on the frame 110 to achieve sliding assembly between the slider 120 and the frame 110. The drive mechanism is disposed on the frame 110 and connected to the slider 120. The drive mechanism can drive the slider 120 to rise and fall in a preset direction. This preset direction can be a vertical direction, or it can maintain a preset angle with the vertical direction according to actual processing requirements. The preset angle can be greater than 0° and less than 30°. During the descent, the slider 120 can apply pressure to the sheet metal to be processed, causing the sheet metal to bend. It should be noted that a worktable 190 for placing the sheet material to be processed is provided below the slider 120. The cooperation between the slider 120 and the worktable 190 allows the sheet material to be bent into the corresponding shape.

[0036] The drive mechanism may include components such as cylinders or motors. The slider 120 has a first surface and a second surface facing away from each other. The first surface of the slider 120 faces the mounting space, and the second surface faces away from the mounting space. The drive mechanism may include a first drive unit 130, a second drive unit 140, and an auxiliary drive unit 150. A first direction is defined perpendicular to the lifting direction of the slider 120. The execution portions of the first drive unit 130, the second drive unit 140, and the auxiliary drive unit 150 are respectively spaced apart on the first surface of the slider 120 along the first direction. The execution portion of the auxiliary drive unit 150 is located between the execution portions of the first drive unit 130 and the second drive unit 140.

[0037] It should be noted that the aforementioned execution part refers to the part where the first drive unit 130, the second drive unit 140, and the auxiliary drive unit 150 act on the slider 120 and drive the slider 120 to rise and fall. Since the execution part of the auxiliary drive unit 150 is located between the execution parts of the first drive unit 130 and the second drive unit 140, it can provide additional support and driving force in the area with a large lateral span of the slider 120 (the middle area of ​​the slider 120), so that the slider 120 can be pressed down evenly and the pressure can be evenly distributed to the surface of the sheet metal, which is beneficial to improving the consistency of the processed workpiece; and the auxiliary drive unit 150 can share the load of the first drive unit 130 and the second drive unit 140, thus improving the load capacity of the bending machine.

[0038] When the first driving unit 130, the second driving unit 140, and the auxiliary driving unit 150 respectively provide driving force to the slider 120, if the torques provided by the first driving unit 130, the second driving unit 140, and the auxiliary driving unit 150 are different, it is easy to cause uneven force on the slider 120, or even damage. Of course, it will also affect the uniform application of force on the plate by the slider 120. Based on the above problems, if... Figure 1 As shown, the drive mechanism also includes a torque synchronization module 160. The auxiliary drive unit 150 can be electrically connected to the first drive unit 130 or the second drive unit 140 through the torque synchronization module 160. The torque synchronization module 160 is used to obtain the output torque of the first drive unit 130 or the second drive unit 140, and control the auxiliary drive unit 150 to output with the output torque as the target output torque, so as to ensure that the torque of the auxiliary drive unit 150 is consistent with that of the first drive unit 130 or the second drive unit 140, thereby enabling the slider 120 to apply bending force evenly to the plate to be processed.

[0039] In one optional embodiment of this application, such as Figure 1As shown, the auxiliary drive unit 150 may include a first auxiliary drive unit 151 and a second auxiliary drive unit 152. The execution portions of the first auxiliary drive unit 151 and the second auxiliary drive unit 152 are respectively arranged at intervals along a first direction on a first surface, with the first auxiliary drive unit 151 close to the first drive unit 130 and the second auxiliary drive unit 152 close to the second drive unit 140. The first auxiliary drive unit 151 and the first drive unit 130 can be grouped together, and the second auxiliary drive unit 152 and the second drive unit 140 can be grouped together.

[0040] Correspondingly, the torque synchronization module 160 may include a first submodule 161 and a second submodule 162. The first auxiliary drive unit 151 is electrically connected to the first drive unit 130 via the first submodule 161. The first submodule 161 is used to acquire the first output torque of the first drive unit 130 and control the first auxiliary drive unit 151 to output torque with the first output torque as the target torque, thereby ensuring that the torque of the first auxiliary drive unit 151 is consistent with that of the first drive unit 130. The second auxiliary drive unit 152 is electrically connected to the second drive unit 140 via the second submodule 162. The second submodule 162 is used to acquire the second output torque of the second drive unit 140 and control the second auxiliary drive unit 152 to output torque with the second output torque as the target torque, thereby ensuring that the torque of the second auxiliary drive unit 152 is consistent with that of the second drive unit 140.

[0041] It should be added that in some application scenarios, the sheet material to be processed is often not placed in the center of the slider 120, but rather biased towards the first drive unit 130 or the second drive unit 140. Therefore, the torque required to be applied to the first drive unit 130 and the second drive unit 140 is also different. Thus, grouping the first auxiliary drive unit 151 with the first drive unit 130 and the second auxiliary drive unit 152 with the second drive unit 140 together can improve the flexibility of the bending machine.

[0042] The aforementioned first drive unit 130 may include a first motor 131, a first motor drive circuit, and a first transmission assembly 132. The first motor 131 is mounted on the frame 110. The first motor drive circuit may be integrated inside the housing of the first motor 131. The first motor drive circuit is electrically connected to the first motor 131 and is used to control parameters such as the speed and output torque of the first motor 131. The first motor 131 may be connected to the slider 120 through the first transmission assembly 132.

[0043] The second drive unit 140 may include a second motor 141, a second motor drive circuit, and a second transmission assembly 142. The second motor 141 is mounted on the frame 110. Similarly, the second motor drive circuit may also be integrated inside the housing of the second motor 141. The second motor drive circuit is electrically connected to the second motor 141 and is used to control parameters such as the speed and output torque of the second motor 141. The second motor 141 can be connected to the slider 120 through the second transmission assembly 142.

[0044] The first auxiliary drive unit 151 may include a third motor 1511, a third motor drive circuit, and a third transmission assembly 1512. The third motor 1511 is mounted on the frame 110. Similarly, the third motor drive circuit may also be integrated inside the housing of the third motor 1511. The third motor drive circuit is electrically connected to the third motor 1511 and is used to control parameters such as the speed and output torque of the third motor 1511. The third motor 1511 can be connected to the slider 120 through the third transmission assembly 1512.

[0045] The second auxiliary drive unit 152 may include a fourth motor 1521, a fourth motor drive circuit, and a fourth transmission assembly 1522. The fourth motor 1521 is mounted on the frame 110. Similarly, the fourth motor drive circuit may also be integrated inside the housing of the fourth motor 1521. The fourth motor drive circuit is electrically connected to the fourth motor 1521 and is used to control parameters such as the speed and output torque of the fourth motor 1521. The fourth motor 1521 can be connected to the slider 120 through the fourth transmission assembly 1522.

[0046] The first submodule 161 is electrically connected to the first motor drive circuit and the third motor drive circuit, respectively, and the second submodule 162 is electrically connected to the second motor drive circuit and the fourth motor drive circuit, respectively. Since the first motor drive circuit and the third motor drive circuit are directly connected through the first submodule 161, and the second motor drive circuit and the fourth motor drive circuit are directly connected through the second submodule 162, the timeliness of data transmission can be guaranteed, further improving the torque synchronization effect.

[0047] like Figure 1 As shown, the bending machine may also include a main control module 170, which is electrically connected to the first motor drive circuit and the second motor drive circuit respectively. The main control module 170 can control the first motor 131 and the second motor 141 to run synchronously to avoid the slider 120 from deflecting.

[0048] To determine the position of slider 120, such as Figure 1As shown, the bending machine also includes a position detection unit 180, which is located between the slider 120 and the frame 110 and is electrically connected to the main control module 170. The main control module 170 is used to control the output parameters of the first motor 131 and / or the second motor 141 based on the detection data from the position detection unit 180. The output parameters may include speed, torque, etc. The position detection unit 180 can be an infrared position sensor, a Hall sensor, etc.

[0049] The aforementioned position detection unit 180 may include a first detection unit 181 and a second detection unit 182. The slider 120 has a first end face and a second end face opposite to each other along a first direction. The first detection unit 181 can be disposed between the first end face and the frame 110. The first detection unit 181 is electrically connected to the main control module 170, which controls the output parameters of the first motor 131 based on the first detection data from the first detection unit 181. The second detection unit 182 can be disposed between the second end face and the frame 110, and is electrically connected to the main control module 170. The main control module 170 controls the output parameters of the second motor 141 based on the second detection data from the second detection unit 182. By setting the above two detection units, the position of the slider 120 can be detected from both sides. The main control module 170 can control the first drive unit 130 and the second drive unit 140 respectively based on the detection data from the two detection units, further reducing the probability of the slider 120 deviating.

[0050] The aforementioned position detection unit 180 may specifically include a position ruler 183 and a slider 184. The slider 184 is slidably connected to the position ruler 183 and electrically connected to the main control module 170. The slider 184 can identify its relative position with the position ruler 183 and transmit this relative position information to the main control module 170 as an electrical signal. It should be noted that the relative position information between the slider 184 and the position ruler 183 can characterize the position information of the slider 120; that is, there can be a preset correspondence between the relative position information between the slider 184 and the position ruler 183 and the position information of the slider 120. One of the slider 184 and the position ruler 183 is connected to the frame 110, and the other is connected to the slider 120. Specific connection methods may include welding, bolting, or snap-fitting.

[0051] like Figure 1 As shown, the bending machine may also include a worktable 190, which is located below the frame 110. The worktable 190 has a lower die 191 on its surface and an upper die 121 on the end face of the slider 120 facing the worktable 190. When the slider 120 is raised or lowered, the upper die 121 and the lower die 191 move away from or closer to each other. The combination of the upper die 121 and the lower die 191 enables the sheet metal to be bent into a preset shape.

[0052] The structures of the first transmission assembly 132, the second transmission assembly 142, the third transmission assembly 1512, and the fourth transmission assembly 1522 described above can be the same, and each includes a transmission belt 1321, a lead screw 1322, and a nut 1323. The nut 1323 is threadedly connected to the slider 120 to form a lead screw and nut pair. The nut 1323 is fixedly connected to the slider 120. The upper end of the lead screw 1322 is connected to the first motor 131, the second motor 141, the third motor 1511, or the fourth motor 1521 through the transmission belt 1321, thereby achieving stable transmission.

[0053] The above embodiments of this application focus on describing the differences between the various embodiments. As long as the different technical features between the various embodiments are not contradictory, they can be combined to form more specific embodiments. For the sake of brevity, they will not be described in detail here.

[0054] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A bending machine, characterized in that, It includes a frame (110), a slider (120), and a drive mechanism; The frame (110) encloses the installation space, the slider (120) is located in the installation space and is slidably connected to the frame (110), the drive mechanism is located on the frame (110) and connected to the slider (120) to drive the slider (120) to rise and fall in a preset direction; The slider (120) has a first surface and a second surface facing away from each other. The first surface faces the mounting space and the second surface faces away from the mounting space. The driving mechanism includes a first driving part (130), a second driving part (140), and an auxiliary driving part (150). The execution part of the first driving part (130), the execution part of the second driving part (140), and the execution part of the auxiliary driving part (150) are respectively arranged at intervals along a first direction on the first surface, and the execution part of the auxiliary driving part (150) is located between the execution part of the first driving part (130) and the execution part of the second driving part (140). Wherein, the first direction is perpendicular to the lifting direction of the slider (120).

2. The bending machine according to claim 1, characterized in that, The drive mechanism further includes a torque synchronization module (160). The auxiliary drive unit (150) is electrically connected to the first drive unit (130) or the second drive unit (140) through the torque synchronization module (160). The torque synchronization module (160) is used to obtain the output torque of the first drive unit (130) or the second drive unit (140) and control the auxiliary drive unit (150) to output with the output torque as the target output torque.

3. The bending machine according to claim 2, characterized in that, The auxiliary drive unit (150) includes a first auxiliary drive unit (151) and a second auxiliary drive unit (152). The execution portions of the first auxiliary drive unit (151) and the second auxiliary drive unit (152) are respectively arranged at intervals along the first direction on the first surface, and the first auxiliary drive unit (151) is close to the first drive unit (130), and the second auxiliary drive unit (152) is close to the second drive unit (140). The torque synchronization module (160) includes a first submodule (161) and a second submodule (162). The first auxiliary drive unit (151) is electrically connected to the first drive unit (130) through the first submodule (161). The first submodule (161) is used to acquire the first output torque of the first drive unit (130) and control the first auxiliary drive unit (151) to output with the first output torque as the target output torque. The second auxiliary drive unit (152) is electrically connected to the second drive unit (140) through the second submodule (162). The second submodule (162) is used to acquire the second output torque of the second drive unit (140) and control the second auxiliary drive unit (152) to output with the second output torque as the target output torque.

4. The bending machine according to claim 3, characterized in that, The first drive unit (130) includes a first motor (131), a first motor drive circuit and a first transmission assembly (132). The first motor (131) is mounted on the frame (110) and is connected to the slider (120) through the first transmission assembly (132). The first motor drive circuit is electrically connected to the first motor (131). The second drive unit (140) includes a second motor (141), a second motor drive circuit, and a second transmission assembly (142). The second motor (141) is mounted on the frame (110) and is connected to the slider (120) through the second transmission assembly (142). The second motor drive circuit is electrically connected to the second motor (141). The first auxiliary drive unit (151) includes a third motor (1511), a third motor drive circuit and a third transmission assembly (1512). The third motor (1511) is mounted on the frame (110) and is connected to the slider (120) through the third transmission assembly (1512). The third motor drive circuit is electrically connected to the third motor (1511). The second auxiliary drive unit (152) includes a fourth motor (1521), a fourth motor drive circuit and a fourth transmission assembly (1522). The fourth motor (1521) is mounted on the frame (110) and is connected to the slider (120) through the fourth transmission assembly (1522). The fourth motor drive circuit is electrically connected to the fourth motor (1521). The first submodule (161) is electrically connected to the first motor drive circuit and the third motor drive circuit respectively, and the second submodule (162) is electrically connected to the second motor drive circuit and the fourth motor drive circuit respectively.

5. The bending machine according to claim 4, characterized in that, The bending machine also includes a main control module (170), which is electrically connected to the first motor drive circuit and the second motor drive circuit respectively, and is used to control the first motor (131) and the second motor (141) to run synchronously.

6. The bending machine according to claim 5, characterized in that, The bending machine also includes a position detection unit (180), which is located between the slider (120) and the frame (110) and is electrically connected to the main control module (170). The main control module (170) is used to control the output parameters of the first motor (131) and / or the second motor (141) according to the detection data of the position detection unit (180).

7. The bending machine according to claim 6, characterized in that, The position detection unit (180) includes a first detection unit (181) and a second detection unit (182), and the slider (120) has a first end face and a second end face opposite to each other along the first direction; The first detection unit (181) is located between the first end face and the frame (110) and is electrically connected to the main control module (170). The main control module (170) is used to control the output parameters of the first motor (131) according to the first detection data of the first detection unit (181). The second detection unit (182) is located between the second end face and the frame (110) and is electrically connected to the main control module (170). The main control module (170) is used to control the output parameters of the second motor (141) according to the second detection data of the second detection unit (182).

8. The bending machine according to claim 6, characterized in that, The position detection unit (180) includes a position ruler (183) and a slider (184). The slider (184) is slidably connected to the position ruler (183). One of the slider (184) and the position ruler (183) is connected to the frame (110), and the other of the slider (184) and the position ruler (183) is connected to the slider (120). The slider (184) is electrically connected to the main control module (170) and is used to transmit the relative position information of the slider (184) and the position ruler (183) to the main control module (170).

9. The bending machine according to claim 1, characterized in that, The bending machine also includes a worktable (190), which is located below the frame (110). The worktable (190) has a lower die (191) on its surface and an upper die (121) on the end face of the slider (120) facing the worktable (190). When the slider (120) moves up and down, the upper die (121) and the lower die (191) move away from or closer to each other.

10. The bending machine according to claim 4, characterized in that, The first transmission assembly (132), the second transmission assembly (142), the third transmission assembly (1512), and the fourth transmission assembly (1522) have the same structure and each includes a transmission belt (1321), a lead screw (1322), and a nut (1323). The nut (1323) is threadedly connected to the slider (120) to form a lead screw (1322) nut (1323) pair. The nut (1323) is fixedly connected to the slider (120). The upper end of the lead screw (1322) is connected to the first motor (131), the second motor (141), the third motor (1511), or the fourth motor (1521) via the transmission belt (1321).

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