Rear material blocking device of electro-hydraulic servo numerical control bending machine

Abstract

The utility model discloses a rear material blocking device of an electro-hydraulic servo numerical control bending machine, which belongs to the technical field of bending machines and comprises a bending machine body, a feeding frame is arranged at the upper end of the bending machine body, telescopic rods are symmetrically arranged on one side of the feeding frame, the surfaces of the telescopic rods are sleeved with limiting springs, a workpiece pressing assembly is arranged at the upper end of the feeding frame, and the upper end of the workpiece pressing assembly is provided with a clamping block. A baffle positioning assembly is arranged at one end of the telescopic rod, a threaded rod is arranged on one side of the baffle positioning assembly, and a fixing frame corresponding to the threaded rod is arranged on one side of the feeding frame. By arranging the baffle positioning assembly, the use position of the baffle can be adjusted and fixed according to the required bending length of a workpiece, the convenience and accuracy of subsequent workpiece positioning are guaranteed, manpower resources are saved, the workpiece positioning efficiency is improved, meanwhile, the surface of the baffle can be protected, and the service life of the baffle is prolonged. Potholes caused by damaged surfaces of the baffles are prevented from affecting positioning accuracy, and product quality is improved.

Description

Technical Field

[0001] This utility model belongs to the field of bending machine technology, specifically relating to a back gauge device for an electro-hydraulic servo CNC bending machine. Background Technology

[0002] A bending machine is a machine capable of bending thin plates. Its main structure includes a support frame, a worktable, and a clamping plate. The worktable is placed on the support frame and consists of a base and a pressure plate. The base is connected to the clamping plate via a hinge. The base comprises a housing, a coil, and a cover plate. The coil is placed in a recess within the housing, and the top of the recess is covered by the cover plate. During operation, the coil is energized by a wire, generating an attractive force on the pressure plate, thus clamping the thin plate between the pressure plate and the base. Because electromagnetic clamping is used, the pressure plate can be made to meet various workpiece requirements, and workpieces with side walls can be processed. Operation is also very simple.

[0003] Chinese Patent Application No. 201920104867.X discloses a back gauge device for an electro-hydraulic servo CNC bending machine, including a bending machine body. The upper end of the bending machine body has a through-feed chute, and the upper end of the bending machine body has a moving mechanism for cooperating with the feed chute. A telescopic mechanism is fixedly connected to one side wall of the bending machine body, and the telescopic mechanism and the feed chute are located on the same horizontal plane. A limiting mechanism for cooperating with the telescopic mechanism is fixedly connected to one side wall of the bending machine body. This invention allows for adjustment of the bending radius for each bend, and features a simple structure, convenient operation, high reliability, and low maintenance difficulty and cost.

[0004] The aforementioned patent makes it inconvenient to protect the baffle during use. The surface is prone to damage when it is in contact with the workpiece for a long time, which affects the performance of the equipment. At the same time, it is impossible to position the baffle after it moves, making it difficult to quickly position subsequent workpieces. The equipment has low efficiency and it is inconvenient to press the workpiece after it is loaded, which wastes human resources. Utility Model Content

[0005] To address the problems mentioned in the background section, this invention provides a back gauge device for an electro-hydraulic servo CNC bending machine, which features convenient and stable baffle adjustment and good workpiece positioning.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a back gauge device for an electro-hydraulic servo CNC bending machine, comprising a bending machine body, a feeding rack at the upper end of the bending machine body, telescopic rods symmetrically arranged on one side of the feeding rack, a limit spring sleeved on the surface of the telescopic rods, a workpiece clamping assembly at the upper end of the feeding rack, a baffle positioning assembly at one end of the telescopic rods, a threaded rod on one side of the baffle positioning assembly, and a fixing frame on one side of the feeding rack corresponding to the threaded rod.

[0007] Preferably, the baffle positioning assembly includes a baffle body, a positioning block, a protective baffle, a positioning spring, a positioning seat, a guide protrusion, and a positioning device. One end of the telescopic rod is provided with the baffle body, the upper middle of the baffle body is provided with the positioning seat, the positioning seat is symmetrically provided with positioning springs inside, one end of the positioning spring is provided with a positioning block, the upper end of the baffle body is symmetrically provided with guide protrusions, one side of the guide protrusion is provided with a protective baffle, and the upper end of the threaded rod is provided with a positioning device.

[0008] Preferably, the upper end of the protective baffle has an insertion groove corresponding to the guide protrusion, and the interior of the protective baffle has a positioning hole corresponding to the positioning block.

[0009] Preferably, the positioning device includes a guide block, a pull rod, a compression spring, a positioning tooth block, a toothed scale, a plug-in block, and a limiting ring. The threaded rod has a limiting ring on its surface, a plug-in block at its upper end, a toothed scale at its upper end, a guide block inside the fixing frame corresponding to the toothed scale, a pull rod inside the guide block, a compression spring sleeved on the surface of the pull rod, and a positioning tooth block at one end of the pull rod.

[0010] Preferably, the inner middle of the limiting ring is provided with an annular groove corresponding to the insertion block, and the inner side of the fixing frame is provided with a limiting through groove corresponding to the toothed scale.

[0011] Preferably, the workpiece clamping assembly includes a lead screw, a servo motor, a clamping block, fastening bolts, a guide rod, and a mounting plate. The servo motor is provided on one side of the upper end of the loading rack, and the lead screw is provided at the output end of the servo motor. The guide rod is provided on the other side of the upper end of the loading rack. The mounting plate is provided between the lead screw and the guide rod. Several fastening bolts are connected inside the mounting plate, and the clamping block is provided at the bottom end of the mounting plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, by setting a baffle positioning component, can adjust and fix the position of the baffle according to the required bending length of the workpiece, ensuring the convenience and accuracy of subsequent workpiece positioning, saving manpower, improving workpiece positioning efficiency, and protecting the surface of the baffle to prevent damage and pitting that may affect positioning accuracy, thereby improving product quality.

[0014] 2. This utility model, by setting up a workpiece clamping component, can conveniently and quickly clamp the positioned workpiece, and the position and angle of the clamping block can be adjusted according to the workpiece specifications to ensure the clamping strength of the workpiece and improve the stability of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the baffle positioning assembly structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the positioning device structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the workpiece clamping assembly of this utility model.

[0019] In the diagram: 1. Workpiece clamping assembly; 11. Lead screw; 12. Servo motor; 13. Clamping block; 14. Fastening bolt; 15. Guide rod; 16. Mounting plate; 2. Feed rack; 3. Bending machine body; 4. Telescopic rod; 5. Limit spring; 6. Threaded rod; 7. Fixing frame; 8. Baffle positioning assembly; 81. Baffle body; 82. Positioning insert; 83. Protective baffle; 84. Positioning spring; 85. Positioning seat; 86. Guide protrusion; 87. Positioning device; 871. Guide block; 872. Pull rod; 873. Clamping spring; 874. Positioning tooth block; 875. Toothed scale; 876. Insertion block; 877. Limit ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Please see Figure 1-4 The present invention provides the following technical solution: a back gauge device for an electro-hydraulic servo CNC bending machine, comprising a bending machine body 3, a feeding rack 2 at the upper end of the bending machine body 3, a telescopic rod 4 symmetrically arranged on one side of the feeding rack 2, a limit spring 5 sleeved on the surface of the telescopic rod 4, a workpiece clamping assembly 1 at the upper end of the feeding rack 2, a baffle positioning assembly 8 at one end of the telescopic rod 4, a threaded rod 6 on one side of the baffle positioning assembly 8, and a fixing frame 7 on one side of the feeding rack 2 corresponding to the threaded rod 6.

[0023] Specifically, the baffle positioning assembly 8 includes a baffle body 81, a positioning insert 82, a protective baffle 83, a positioning spring 84, a positioning seat 85, a guide protrusion 86, and a positioning device 87. The telescopic rod 4 has a baffle body 81 at one end, a positioning seat 85 at the middle of the upper end of the baffle body 81, a positioning spring 84 symmetrically arranged inside the positioning seat 85, a positioning insert 82 at one end of the positioning spring 84, a guide protrusion 86 symmetrically arranged at the upper end of the baffle body 81, a protective baffle 83 on one side of the guide protrusion 86, and a positioning device 87 at the upper end of the threaded rod 6.

[0024] By adopting the above technical solution, when the workpiece needs to be bent during the use of the equipment, a protective baffle 83 can be installed on one side of the baffle body 81 to protect its surface. The upper end of the protective baffle 83 is inserted along the guide protrusion 86. At the same time, the positioning block 82 is pushed by the force to compress the positioning spring 84. When the protective baffle 83 and the guide protrusion 86 are inserted into place, the positioning spring 84 resets, so that the positioning block 82 is inserted into the positioning hole inside the protective baffle 83. This ensures that the protective baffle 83 is installed accurately and stably, prevents the workpiece from causing damage and pits to the surface of the baffle body 81, affects the bending accuracy of the workpiece, and improves product quality.

[0025] Specifically, the upper end of the protective baffle 83 has an insertion groove corresponding to the guide protrusion 86, and the interior of the protective baffle 83 has a positioning hole corresponding to the positioning plug 82.

[0026] By adopting the above technical solutions, the accuracy and stability of the installation of the protective baffle 83 are ensured, the strength of the equipment is improved, and the quality of protection is guaranteed.

[0027] Specifically, the positioning device 87 includes a guide block 871, a pull rod 872, a compression spring 873, a positioning tooth block 874, a toothed scale 875, a plug-in block 876, and a limiting ring 877. The threaded rod 6 has a limiting ring 877 on its surface, a plug-in block 876 on its upper end, a toothed scale 875 on its upper end, a guide block 871 corresponding to the toothed scale 875 inside the fixing frame 7, a pull rod 872 inside the guide block 871, a compression spring 873 sleeved on the surface of the pull rod 872, and a positioning tooth block 874 at one end of the pull rod 872.

[0028] By adopting the above technical solution, the workpiece is inserted into the inside of the feeding rack 2 and pushed for feeding. One end of the workpiece abuts against the surface of the protective baffle 83, causing the threaded rod 6 to move along the inside of the fixed frame 7. At this time, the pull rod 872 is pulled to compress the compression spring 873, and the positioning tooth block 874 separates from the toothed scale 875. Then, the moving threaded rod 6 causes the limiting ring 877 to move. When the required bending length is reached, the pull rod 872 is released to reset the compression spring 873. The positioning tooth block 874 locks the toothed scale 875 again, ensuring that the baffle body 81 is accurately and stably positioned. The positioning length of the subsequent workpiece can be quickly determined without having to push the baffle body 81 to move again, saving manpower, improving workpiece positioning efficiency, and ensuring the quality of equipment use.

[0029] Specifically, the inner middle of the limiting ring 877 is provided with an annular groove corresponding to the plug block 876, and the inner side of the fixing bracket 7 is provided with a limiting through groove corresponding to the toothed scale 875.

[0030] By adopting the above technical solution, it is ensured that the plug block 876 will not detach from the inside of the limit ring 877, and the movement of the limit ring 877 will not be affected, thus ensuring the stable use of the equipment.

[0031] In this embodiment, when the workpiece needs to be bent during equipment use, a protective baffle 83 can be installed on one side of the baffle body 81 to protect its surface. The upper end of the protective baffle 83 is inserted along the guide protrusion 86. At the same time, the positioning block 82 is pushed by the force to compress the positioning spring 84. When the protective baffle 83 and the guide protrusion 86 are inserted into place, the positioning spring 84 resets, so that the positioning block 82 is inserted into the positioning hole inside the protective baffle 83. This ensures that the protective baffle 83 is installed accurately and stably, prevents the workpiece from causing damage and pits to the surface of the baffle body 81, affects the bending accuracy of the workpiece, and improves product quality.

[0032] The workpiece is inserted into the loading rack 2 and pushed in. One end of the workpiece abuts against the surface of the protective baffle 83, causing the threaded rod 6 to move along the inside of the fixed frame 7. At this time, the pull rod 872 is pulled to compress the pressure spring 873, and the positioning tooth block 874 separates from the toothed scale 875. Then, the moving threaded rod 6 causes the limiting ring 877 to move. When the required bending length is reached, the pull rod 872 is released to reset the pressure spring 873. The positioning tooth block 874 locks the toothed scale 875 again, ensuring that the baffle body 81 is accurately and stably positioned. The positioning length of the subsequent workpiece can be quickly determined without having to push the baffle body 81 to move again, saving manpower, improving workpiece positioning efficiency, and ensuring the quality of equipment use.

[0033] Example 2

[0034] The difference between this embodiment and embodiment 1 is that, specifically, the workpiece clamping assembly 1 includes a lead screw 11, a servo motor 12, a clamping block 13, fastening bolts 14, a guide rod 15, and a mounting plate 16. The servo motor 12 is provided on one side of the upper end of the loading rack 2, and the lead screw 11 is provided at the output end of the servo motor 12. The guide rod 15 is provided on the other side of the upper end of the loading rack 2. The mounting plate 16 is provided between the lead screw 11 and the guide rod 15. Several fastening bolts 14 are connected inside the mounting plate 16, and the clamping block 13 is provided at the bottom end of the mounting plate 16.

[0035] In this embodiment, after determining the bending length of the workpiece, the servo motor 12 is turned on to drive the lead screw 11 to rotate. At this time, the lead screw 11 drives the mounting plate 16 to move down along the guide rod 15, and the clamping block 13 installed at the bottom of the mounting plate 16 can clamp the workpiece to ensure the stability of the top positioning of the workpiece and improve the strength of the equipment. When it is necessary to clamp irregularly shaped workpieces, the fastening bolts 14 can be loosened to position and install different clamping blocks 13 to ensure the effect of the clamping blocks 13 and improve the applicability of the equipment.

[0036] The structure and operating principle of the feeding rack 2, bending machine body 3, telescopic rod 4 and fixing frame 7 in this utility model have been disclosed in the back gauge device of an electro-hydraulic servo CNC bending machine disclosed in Chinese patent application No. 201920104867.X.

[0037] The working principle and usage process of this utility model are as follows: When the workpiece needs to be bent during the use of the equipment, a protective baffle 83 can be installed on one side of the baffle body 81 to protect its surface. The upper end of the protective baffle 83 is inserted along the guide protrusion 86. At the same time, the positioning plug 82 is pushed by the force to compress the positioning spring 84. When the protective baffle 83 and the guide protrusion 86 are inserted into place, the positioning spring 84 resets, so that the positioning plug 82 is inserted into the positioning hole inside the protective baffle 83. This ensures that the protective baffle 83 is installed accurately and stably, prevents the workpiece from causing damage and pits to the surface of the baffle body 81, affects the bending accuracy of the workpiece, and improves product quality.

[0038] The workpiece is inserted into the loading rack 2 and pushed in. One end of the workpiece abuts against the surface of the protective baffle 83, causing the threaded rod 6 to move along the inside of the fixed frame 7. At this time, the pull rod 872 is pulled to compress the pressure spring 873, and the positioning tooth block 874 separates from the toothed scale 875. Then, the moving threaded rod 6 causes the limiting ring 877 to move. When the required bending length is reached, the pull rod 872 is released to reset the pressure spring 873. The positioning tooth block 874 locks the toothed scale 875 again, ensuring that the baffle body 81 is accurately and stably positioned. The positioning length of the subsequent workpiece can be quickly determined without having to push the baffle body 81 to move again, saving manpower, improving workpiece positioning efficiency, and ensuring the quality of equipment use.

[0039] After determining the bending length of the workpiece, the servo motor 12 is turned on to drive the lead screw 11 to rotate. At this time, the lead screw 11 drives the mounting plate 16 to move down along the guide rod 15, and the clamping block 13 installed at the bottom of the mounting plate 16 can clamp the workpiece to ensure the stability of the top positioning of the workpiece and improve the strength of the equipment. When it is necessary to clamp irregularly shaped workpieces, the fastening bolts 14 can be loosened to position and install different clamping blocks 13 to ensure the effect of the clamping blocks 13 and improve the applicability of the equipment.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A back gauge device for an electro-hydraulic servo CNC bending machine, comprising a bending machine body (3), wherein a feeding rack (2) is provided at the upper end of the bending machine body (3), and telescopic rods (4) are symmetrically arranged on one side of the feeding rack (2), and limit springs (5) are sleeved on the surface of the telescopic rods (4), characterized in that: The upper end of the loading rack (2) is provided with a workpiece clamping assembly (1), one end of the telescopic rod (4) is provided with a baffle positioning assembly (8), one side of the baffle positioning assembly (8) is provided with a threaded rod (6), and one side of the loading rack (2) is provided with a fixing frame (7) corresponding to the threaded rod (6).

2. The back gauge device of an electro-hydraulic servo CNC bending machine according to claim 1, characterized in that: The baffle positioning assembly (8) includes a baffle body (81), a positioning plug (82), a protective baffle (83), a positioning spring (84), a positioning seat (85), a guide protrusion (86), and a positioning device (87). The baffle body (81) is provided at one end of the telescopic rod (4), the positioning seat (85) is provided at the middle of the upper end of the baffle body (81), the positioning spring (84) is symmetrically arranged inside the positioning seat (85), the positioning plug (82) is provided at one end of the positioning spring (84), the guide protrusion (86) is symmetrically arranged at the upper end of the baffle body (81), the protective baffle (83) is provided on one side of the guide protrusion (86), and the positioning device (87) is provided at the upper end of the threaded rod (6).

3. The back gauge device of an electro-hydraulic servo CNC bending machine according to claim 2, characterized in that: The upper end of the protective baffle (83) has an insertion groove corresponding to the guide protrusion (86), and the interior of the protective baffle (83) has a positioning hole corresponding to the positioning plug (82).

4. The back gauge device of an electro-hydraulic servo CNC bending machine according to claim 2, characterized in that: The positioning device (87) includes a guide block (871), a pull rod (872), a compression spring (873), a positioning tooth block (874), a toothed scale (875), a plug-in block (876), and a limiting ring (877). The threaded rod (6) has a limiting ring (877) on its surface. The upper end of the limiting ring (877) has a plug-in block (876). The upper end of the plug-in block (876) has a toothed scale (875). The inside of the fixing frame (7) is provided with a guide block (871) corresponding to the toothed scale (875). The inside of the guide block (871) is provided with a pull rod (872). The surface of the pull rod (872) is fitted with a compression spring (873). One end of the pull rod (872) is provided with a positioning tooth block (874).

5. The back gauge device of an electro-hydraulic servo CNC bending machine according to claim 4, characterized in that: The inner middle of the limiting ring (877) is provided with an annular groove corresponding to the plug-in block (876), and the inner side of the fixing frame (7) is provided with a limiting through groove corresponding to the toothed scale (875).

6. The back gauge device of an electro-hydraulic servo CNC bending machine according to claim 1, characterized in that: The workpiece clamping assembly (1) includes a lead screw (11), a servo motor (12), a clamping block (13), fastening bolts (14), a guide rod (15), and a mounting plate (16). The servo motor (12) is provided on one side of the upper end of the loading rack (2), and the lead screw (11) is provided at the output end of the servo motor (12). The guide rod (15) is provided on the other side of the upper end of the loading rack (2). The mounting plate (16) is provided between the lead screw (11) and the guide rod (15). Several fastening bolts (14) are connected inside the mounting plate (16), and the clamping block (13) is provided at the bottom end of the mounting plate (16).

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