A bending tool

Abstract

The application relates to the technical field of numerical control bending machines, and discloses a bending tool, which comprises a bending machine tool, and a stamping rod is arranged in the bending machine tool. The bending tool can be used as a signal reflection surface of a photoelectric sensor, forms a light path closed loop, detects the pressing position of the stamping rod, and after the stamping rod returns to the original position, the photoelectric sensor and the reflection plate can cooperate to transmit a signal to a PLC, the PLC outputs an instruction, an electric push rod can be driven to operate, the horizontal rod and the push block can be moved through the operation of the electric push rod, so that the workpiece placed on a die can be pushed out, then the workpiece can fall into a collecting frame along a conveying guide rail for collection, and then the electric push rod is retracted to wait for the next cycle. Through the above operation, the finished workpiece can be conveniently discharged and collected, manual workpiece taking is effectively avoided, and the discharging efficiency of the device is improved.

Description

Technical Field

[0001] This application relates to the field of CNC bending machine technology, specifically a bending fixture. Background Technology

[0002] A bending machine is a machine that can bend thin plates waiting to be processed. When bending a workpiece, the workpiece to be bent is placed on the lower die. The upper die protrusion is driven by a hydraulic cylinder to abut against the groove of the lower die. During the abutment process, the bending process of the workpiece is completed by the squeezing action between the protrusion and the groove.

[0003] However, existing bending machines require manual unloading after bending the steel plate. When unloading the workpiece manually, the worker usually picks it up directly with his hands or tools. This manual operation results in low unloading efficiency, is time-consuming and labor-intensive, and poses certain dangers and safety hazards. To solve these problems, a bending fixture has been proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a bending fixture with advantages such as automatic material discharge, which solves the problems of low material discharge efficiency, time-consuming and labor-intensive processes, and certain dangers caused by workers handling workpieces by hand or with tools.

[0005] To achieve the above objectives, this application provides the following technical solution: a bending fixture, including a bending machine tool, wherein a punching rod is provided inside the bending machine tool, a mounting base is fixedly connected to the bottom end of the punching rod, a mounting block is installed and connected inside the mounting base, an extrusion block is fixedly connected to the bottom of the mounting block, a placement table is provided inside the bending machine tool, and a placement mold is provided on the top of the placement table; A reflector is fixedly connected to the side of the mounting base. A connecting rod and a mounting box are fixedly connected to the side of the bending machine tool. A photoelectric sensor is fixedly connected to the side of the connecting rod. A movable block is slidably connected inside the mounting box. An electric push rod is fixedly connected to the top of the movable block. A U-shaped block is fixedly connected to one end of the electric push rod. A locking block is installed inside the U-shaped block. A crossbar is fixedly connected to the side of the locking block. A push block is fixedly connected to one end of the crossbar. A conveying guide rail is installed on the top of the placement table.

[0006] The above scheme uses a reflector as a signal reflecting surface for the photoelectric sensor, forming a closed-loop optical path to detect the pressing position of the stamping rod. When the stamping rod returns to its original position, the reflector and the photoelectric sensor work together to transmit a signal to the PLC. The PLC then outputs a command to drive the electric push rod. The electric push rod moves the crossbar and push block, thus pushing the workpiece off the mold. The workpiece then falls along the conveyor rail into the collection frame for collection. The electric push rod then retracts, waiting for the next cycle. This operation facilitates the unloading and collection of processed workpieces.

[0007] Furthermore, a transmission box is fixedly connected to the bottom of the mounting box, and a rotating rod is tightly nested inside the bottom of the mounting box via a bearing. A threaded rod and a worm gear are fixedly connected to the top and bottom of the rotating rod, respectively. A threaded cylinder is threadedly connected to the surface of the threaded rod, and the threaded cylinder is fixedly connected inside the movable block.

[0008] The above scheme allows the rotational motion to be converted into the vertical displacement of the moving block through the threaded engagement of the threaded rod and the threaded cylinder.

[0009] Furthermore, a transmission rod is tightly nested inside the transmission box via bearings, and a worm gear is fixedly connected to the surface of the transmission rod, with the worm gear meshing with a worm wheel.

[0010] By implementing the above scheme and setting the meshing between the worm gear and the worm, reverse self-locking can be achieved to prevent position drift.

[0011] Furthermore, one end of the transmission rod rotates through the side of the transmission box and is fixedly connected to a knob.

[0012] The above solution, by setting a knob, makes it easy for people to drive the transmission rod and worm gear, and allows operators to quickly fine-tune the equipment parameters.

[0013] Furthermore, a limiting ring is fixedly connected to the surface of the movable block, and the limiting ring is slidably connected inside the mounting box.

[0014] The above solution, by setting a limit ring, can achieve the purpose of restriction, prevent the moving block from moving beyond its range, and protect the mechanical structure.

[0015] Furthermore, the U-shaped block has an internal movable groove, and a fixed spring is fixedly connected to the inner side of the movable groove. One end of the fixed spring is fixedly connected to a toggle plate.

[0016] The above solution uses a fixed spring to automatically keep the locking block in place and prevent accidental disengagement. A toggle plate allows for manual unlocking of the operating components, enabling mold replacement with a single finger.

[0017] Furthermore, a fixing block is fixedly connected to the side of the toggle plate, and two fixing grooves are opened on the surface of the locking block. One end of the fixing block slides through the movable groove and is locked in the fixing block.

[0018] The above solution allows for a mechanical interlock between the fixed block and the fixed slot, ensuring reliable connection. The fixed slot also allows for precise determination of the block's installation position, eliminating assembly errors.

[0019] Furthermore, mounting bases are fixedly connected to the four corners of the bottom of the bending machine.

[0020] The above solution, by setting up a mounting base, can serve as a support foot for the equipment, level the machine tool, and absorb vibration energy.

[0021] Compared with the prior art, the technical solution of this application has the following beneficial effects: This bending fixture, by setting a reflector plate, can serve as a signal reflecting surface for a photoelectric sensor, forming an optical path closed loop to detect the pressing position of the stamping rod. When the stamping rod returns to its original position, the reflector plate and the photoelectric sensor work together to transmit a signal to the PLC. The PLC then outputs a command to drive an electric push rod. The electric push rod moves the crossbar and push block, thereby pushing the workpiece placed on the mold out. The workpiece can then fall along the conveyor rail into the collection frame for collection. The electric push rod then retracts, waiting for the next cycle. Through the above operation, it is convenient for people to discharge and collect the processed workpieces, effectively avoiding manual handling of the workpieces and improving the output efficiency of the device. Attached Figure Description

[0022] Figure 1 This is a frontal three-dimensional structural diagram of this application; Figure 2 This is a side-view perspective three-dimensional structural diagram of this application; Figure 3 This is a schematic diagram of the structure of the electric actuator in this application; Figure 4 for Figure 2 A schematic diagram of the structure at point A in the middle, magnified cross-section. Figure 5 for Figure 2 A structural schematic diagram of the enlarged cross-section at point B.

[0023] In the picture: 1. Bending machine tool; 101. Stamping rod; 102. Mounting base; 103. Mounting block; 104. Placement table; 105. Conveyor rail; 106. Mounting base; 107. Extrusion block; 108. Placement mold; 109. Reflector plate; 1010. Connecting rod; 1011. Photoelectric sensor; 1012. Mounting box; 1013. Movable block; 1014. Electric push rod; 1015. U-shaped block; 1016. 1017. Locking block; 1018. Crossbar; 1019. Push block; 1020. Rotating rod; 1021. Threaded rod; 1022. Transmission box; 1023. Worm gear; 1024. Threaded cylinder; 1025. Transmission rod; 1026. Worm; 1027. Knob; 1028. Fixed groove; 1029. Movable groove; 1030. Fixed spring; 1031. Actuating plate; 1032. Fixed block; 1033. Limiting ring. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Please see Figure 1 , Figure 2 and Figure 3 A bending fixture in this embodiment includes a bending machine tool 1. A punch rod 101 is provided inside the bending machine tool 1. A mounting base 102 is fixedly connected to the bottom end of the punch rod 101. A mounting block 103 is installed and connected inside the mounting base 102. An extrusion block 107 is fixedly connected to the bottom of the mounting block 103. A placement table 104 is provided inside the bending machine tool 1. A placement mold 108 is provided on the top of the placement table 104. A reflector 109 is fixedly connected to the side of the mounting base 102. A connecting rod 1010 and a mounting box 1012 are fixedly connected to the side of the bending machine tool 1. A photoelectric sensor 1011 is fixedly connected to the side of the connecting rod 1010. A movable block 1013 is slidably connected inside the mounting box 1012. An electric push rod 1014 is fixedly connected to the top of the movable block 1013. A U-shaped block 1015 is fixedly connected to one end of the electric push rod 1014. A locking block 1016 is installed inside the U-shaped block 1015. A crossbar 1017 is fixedly connected to the side of the locking block 1016. A push block 1018 is fixedly connected to one end of the crossbar 1017. A conveying guide rail 105 is installed on the top of the placement table 104. By setting the reflector 109, it is possible to... The photoelectric sensor 1011 forms a closed-loop optical path by reflecting the signal of the photoelectric sensor 101. It detects the pressing position of the stamping rod 101. When the stamping rod 101 returns to its original position, it transmits a signal to the PLC through the cooperation of the reflector 109 and the photoelectric sensor 1011. The PLC then outputs a command to drive the electric push rod 1014. The electric push rod 1014 moves the crossbar 1017 and the push block 1018, thereby pushing the workpiece placed on the mold 108 out. The workpiece can then fall into the collection frame along the conveyor rail 105 for collection. The electric push rod 1014 then retracts, waiting for the next cycle. Through the above operation, it is convenient for people to discharge and collect the processed workpieces.

[0026] Please see Figure 3 and Figure 4 A transmission box 1021 is fixedly connected to the bottom of the mounting box 1012. A rotating rod 1019 is tightly nested inside the bottom of the mounting box 1012 via bearings. A threaded rod 1020 and a worm gear 1022 are fixedly connected to the top and bottom of the rotating rod 1019, respectively. A threaded cylinder 1023 is threadedly connected to the surface of the threaded rod 1020. The threaded cylinder 1023 is fixedly connected inside the movable block 1013. Through the threaded engagement of the threaded rod 1020 and the threaded cylinder 1023, the rotational motion can be converted into the vertical displacement of the movable block 1013. A transmission rod 1024 is tightly nested inside the side of the transmission box 1021 via bearings. A worm gear 1025 is fixedly connected to the surface of the transmission rod 1024. 1025 meshes with worm gear 1022. By setting the meshing of worm gear 1022 and worm 1025, reverse self-locking can be achieved to prevent position drift. One end of transmission rod 1024 rotates through the side of transmission box 1021 and is fixedly connected to knob 1026. By setting knob 1026, it is easy for people to drive transmission rod 1024 and worm 1025, and it is easy for operators to quickly fine-tune equipment parameters. Limit ring 1032 is fixedly connected to the surface of movable block 1013. Limit ring 1032 is slidably connected in the mounting box 1012. By setting limit ring 1032, it can form a limiting purpose, which can prevent movable block 1013 from overtravel and protect the mechanical structure.

[0027] Please see Figure 3 and Figure 5 The U-shaped block 1015 has an internal movable groove 1028. A fixing spring 1029 is fixedly connected to the inner side of the movable groove 1028. A toggle plate 1030 is fixedly connected to one end of the fixing spring 1029. By setting the fixing spring 1029, the locking block 1016 can be automatically kept in a locked state to prevent accidental disengagement. By setting the toggle plate 1030, the operating component can be manually unlocked, and the mold can be changed by a single finger operation. A fixing block 1031 is fixedly connected to the side of the toggle plate 1030. Two... A fixed slot 1027 is provided, and one end of a fixed block 1031 slides through the movable slot 1028 and is engaged in the fixed block 1031. By setting the fixed block 1031, a mechanical interlock can be formed with the fixed slot 1027 to ensure the reliability of the connection. By setting the fixed slot 1027, the installation position of the locking block 1016 can be accurately determined to eliminate assembly errors. The four corners of the bottom of the bending machine tool 1 are all fixedly connected with mounting bases 106. By setting the mounting bases 106, they can serve as support feet for the equipment, level the machine tool, and absorb vibration energy.

[0028] In this embodiment, by setting the reflector 109, it can serve as the signal reflecting surface of the photoelectric sensor 1011, forming an optical path closed loop to detect the pressing position of the stamping rod 101. When the stamping rod 101 returns to its original position, through the cooperation of the reflector 109 and the photoelectric sensor 1011, a signal can be transmitted to the PLC. Then, the PLC outputs a command to drive the electric push rod 1014 to run. The operation of the electric push rod 1014 can push the crossbar 1017 and the push block 1018 to move, thereby pushing out the workpiece placed on the mold 108. Then, the workpiece can fall into the collection frame along the conveyor guide rail 105 for collection, and then the electric push rod 1014 retracts. Waiting for the next cycle, the above operations facilitate the collection and unloading of the processed workpieces. By turning the knob 1026, the threaded cylinder 1023 can be moved on the surface of the threaded rod 1020, thereby adjusting the height of the electric push rod 1014, making it more convenient to use. The locking block 1016 is engaged in the U-shaped block 1015, and then, under the action of the fixing spring 1029, the fixing block 1031 is engaged in the fixing groove 1027. The crossbar 1017 and the push block 1018 can be installed at one end of the electric push rod 1014, making it convenient for people to install the crossbar 1017 and the push block 1018.

[0029] The working principle of the above embodiment is as follows: During use, the sheet metal is placed into the placement mold 108. After placement, the stamping rod 101 moves, which can push the extrusion block 107 downward. By moving the extrusion block 107 downward, the sheet metal can be bent. After bending, the stamping rod 101 returns to the initial position. Then, through the cooperation of the reflector 109 and the photoelectric sensor 1011, a signal can be transmitted to the PLC. The PLC then outputs a command to drive the electric push rod 1014. By moving the electric push rod 1014, the crossbar 1017 and the push block 1018 can be moved, thereby pushing the workpiece out of the placement mold 108. The workpiece can then fall into the collection frame along the conveyor guide rail 105 for collection. This facilitates the unloading and collection of processed workpieces, effectively avoiding manual handling of workpieces and improving the output efficiency of the device. When the height of the electric push rod 1014 needs to be adjusted, the knob 1026 is turned to rotate the transmission rod 1024 and the worm gear 1025. Through the meshing of the worm gear 1025 and the worm wheel 1022, the rotating rod 1019 and the threaded rod 1020 can be rotated. Then, through the limiting ring 1032, the threaded cylinder 1023 can be moved on the surface of the threaded rod 1020, thereby adjusting the height of the electric push rod 1014, the crossbar 1017 and the push block 1018. Through the locking action of the fixing block 1031, the fixing hole and the fixing spring 1029, it is convenient to install crossbars 1017 and push blocks 1018 of different specifications, making it more convenient to use.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bending fixture, comprising a bending machine (1), characterized in that: The bending machine tool (1) is provided with a punch rod (101) inside. The bottom end of the punch rod (101) is fixedly connected to a mounting base (102). The mounting base (102) is installed and connected to a mounting block (103). The bottom of the mounting block (103) is fixedly connected to an extrusion block (107). The bending machine tool (1) is provided with a placement table (104) inside. The top of the placement table (104) is provided with a placement mold (108). A reflector plate (109) is fixedly connected to the side of the mounting base (102). A connecting rod (1010) and a mounting box (1012) are fixedly connected to the side of the bending machine (1). A photoelectric sensor (1011) is fixedly connected to the side of the connecting rod (1010). A movable block (1013) is slidably connected inside the mounting box (1012). An electric push rod (1014) is fixedly connected to the top of the movable block (1013). A U-shaped block (1015) is fixedly connected to one end of the electric push rod (1014). A locking block (1016) is installed inside the U-shaped block (1015). A crossbar (1017) is fixedly connected to the side of the locking block (1016). A push block (1018) is fixedly connected to one end of the crossbar (1017). A conveying guide rail (105) is installed on the top of the placement table (104).

2. The bending fixture according to claim 1, characterized in that: The bottom of the mounting box (1012) is fixedly connected to the transmission box (1021). The bottom of the mounting box (1012) is tightly nested with a rotating rod (1019) through a bearing. The top and bottom of the rotating rod (1019) are respectively fixedly connected to a threaded rod (1020) and a worm gear (1022). The surface of the threaded rod (1020) is threadedly connected to a threaded cylinder (1023), and the threaded cylinder (1023) is fixedly connected inside the movable block (1013).

3. A bending fixture according to claim 2, characterized in that: The transmission box (1021) has a transmission rod (1024) tightly nested inside the side by bearings. A worm (1025) is fixedly connected to the surface of the transmission rod (1024), and the worm (1025) meshes with the worm wheel (1022).

4. A bending fixture according to claim 3, characterized in that: One end of the transmission rod (1024) rotates through the side of the transmission box (1021) and is fixedly connected to a knob (1026).

5. A bending fixture according to claim 1, characterized in that: The movable block (1013) is fixedly connected to a limiting ring (1032), and the limiting ring (1032) is slidably connected inside the mounting box (1012).

6. A bending fixture according to claim 1, characterized in that: The U-shaped block (1015) has an open movable groove (1028) inside, and a fixed spring (1029) is fixedly connected to the inside side of the movable groove (1028). One end of the fixed spring (1029) is fixedly connected to a toggle plate (1030).

7. A bending fixture according to claim 6, characterized in that: The toggle plate (1030) is fixedly connected to a fixing block (1031) on its side. The card block (1016) has two fixing grooves (1027) on its surface. One end of the fixing block (1031) slides through the movable groove (1028) and is engaged in the fixing block (1031).

8. A bending fixture according to claim 1, characterized in that: The bending machine (1) has mounting bases (106) fixedly connected to the four corners of its bottom.

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