Positioning fixture for flexible manufacturing production line

Abstract

The utility model discloses a kind of positioning fixtures for flexible manufacturing production line, it is related to positioning fixture technical field, including mounting seat, the outside fixed mounting of mounting seat has drive seat and fixed platform, the outside installation of fixed platform has inflation assembly, the outside of drive seat is symmetrically slidably connected with two moving plates by spacing adjustment mechanism, the utility model in use, flexible and rigid clamping flexible switching and automatic regulation, spacing adjustment mechanism can quickly adapt to different size workpieces, inflation assembly drive push rod drives U-shaped seat to move, and realize flexible pre-clamping by air bag, pressure sensor real-time monitoring and control clamping force, opening and closing assembly make rigid plate adhere or unfold hidden by gear transmission, adhere to meet rigid clamping needs, meet the different positioning needs of precision fragile parts and heavy high-rigid workpieces, without manual replacement component, improve switching efficiency.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, and in particular to a positioning fixture for a flexible manufacturing production line. Background Technology

[0002] A flexible production line is an automated production system that can quickly adapt to changes in product type, specifications, and batch size. Through modular equipment, programmable control, and intelligent scheduling technology, it enables the efficient flow and processing of various types of workpieces.

[0003] Existing flexible production line positioning fixtures only have a single clamping mode when in use. Rigid fixtures are prone to squeezing and deforming precision or fragile workpieces, while flexible fixtures are prone to positioning misalignment when handling heavy or high-rigidity workpieces. Although some combination fixtures can switch modes, the adjustment process is cumbersome and requires manual replacement of clamping components, making it difficult to adapt to the rapid changeover requirements of production lines. In view of this, this application proposes a positioning fixture for flexible manufacturing production lines. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning fixture for flexible manufacturing production lines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A positioning fixture for a flexible manufacturing production line includes a mounting base. A drive base and a fixed platform are fixedly mounted on the outer side of the mounting base. An inflation assembly is mounted on the outer side of the fixed platform. Two movable plates are symmetrically slidably connected to the outer side of the drive base via a spacing adjustment mechanism. A fixed cylinder is fixedly mounted on the outer side of each movable plate, and each fixed cylinder is connected to the inflation assembly. A piston and a push rod are slidably connected inside each fixed cylinder. A spring is installed between the outer side of each piston and the outer side of the corresponding push rod. A pressure sensor is installed on the bottom wall of each fixed cylinder. A U-shaped seat is fixedly mounted on the end of each push rod away from the piston. An air bladder is installed inside each U-shaped seat. Two rigid plates are symmetrically arranged on the outer side of each U-shaped seat. An anti-slip pad is installed on the outer side of each rigid plate. The two rigid plates of each U-shaped seat are controlled to rotate symmetrically by an opening and closing assembly.

[0006] Preferably, each of the opening and closing components includes two rotating shafts, which are symmetrically rotatably connected to the top surface of the corresponding U-shaped seat. Each rigid plate is fixedly installed on the outside of the corresponding rotating shaft, and a gear is installed on the outside of each rotating shaft, with each pair of corresponding gears meshing with each other.

[0007] Preferably, the inflation assembly includes a dual-purpose air pump, which is fixedly installed on the top wall of the fixed platform. A guide tube is fixedly installed on the top surface of the fixed platform and is connected to the dual-purpose air pump. An air inlet pipe is fixedly connected to the outside of each fixed tube. A solenoid valve is installed on the outside of each air inlet pipe. The top end of each air inlet pipe is connected to the guide tube through a connecting pipe.

[0008] Preferably, the spacing adjustment mechanism includes a double-ended screw, which is rotatably connected to a drive seat. Two threaded sleeves are slidably connected inside the drive seat, and each moving plate is fixedly installed on the outside of the corresponding threaded sleeve. The two threaded sleeves are symmetrically threaded to the outside of the double-ended screw. A first motor is fixedly installed on the outside of the drive seat, and the output shaft of the first motor is coaxially connected to the double-ended screw.

[0009] Preferably, a limiting rod is fixedly installed inside the drive seat, and each threaded sleeve is slidably connected to the limiting rod. A positioning seat is fixedly installed on the outside of each fixed cylinder, and each air inlet pipe passes through the corresponding positioning seat.

[0010] Preferably, a fixing frame is fixedly installed on the top surface of each U-shaped seat, a second motor is fixedly installed on the top surface of each fixing frame, and the bottom output shaft of each second motor is coaxially connected to the corresponding rotating shaft. Each second motor is a conical rotor motor.

[0011] This utility model has the following beneficial effects: 1. This utility model achieves flexible switching and automated adjustment of flexible and rigid clamping through devices such as an inflation component, a spacing adjustment mechanism, a fixed cylinder, a push rod, an opening and closing component, a rigid plate, an airbag, a piston, a spring, and a pressure sensor. The spacing adjustment mechanism can quickly adapt to workpieces of different sizes. The inflation component drives the push rod to move the U-shaped seat and achieves flexible pre-clamping through the airbag. The pressure sensor monitors and controls the clamping force in real time. The opening and closing component uses gear transmission to make the rigid plate fit or unfold and hide. When it fits, it meets the rigid clamping requirements and meets the different positioning requirements of precision vulnerable parts and heavy high-rigidity workpieces. There is no need to manually replace components, which improves the switching efficiency.

[0012] 2. This utility model achieves the stability and controllability of rigid clamping through devices such as anti-slip pads and a second motor. The anti-slip pads increase the friction between the rigid plate and the workpiece, preventing the workpiece from sliding during clamping. The second motor drives the rotating shaft and gear transmission to precisely control the opening and closing angle of the rigid plate. In addition, a conical rotor motor is used, and the output shaft locks after power failure to ensure positional stability during rigid clamping and guarantee processing accuracy. Attached Figure Description

[0013] Figure 1This is a schematic diagram of the structure of a positioning fixture for a flexible manufacturing production line proposed in this utility model; Figure 2 This is a schematic diagram of the spacing adjustment mechanism of a positioning fixture for a flexible manufacturing production line proposed in this utility model. Figure 3 This is a schematic diagram of the opening and closing assembly structure of a positioning fixture for a flexible manufacturing production line proposed in this utility model. Figure 4 This is a cross-sectional view of the fixing cylinder of a positioning fixture for a flexible manufacturing production line proposed in this utility model.

[0014] In the diagram: 1. Mounting base; 2. Fixing platform; 3. Drive base; 4. Moving plate; 5. Fixing cylinder; 6. Push rod; 7. U-shaped seat; 8. Airbag; 9. Double-ended screw; 10. Limiting rod; 11. Threaded sleeve; 12. First motor; 13. Dual-purpose air pump; 14. Guide tube; 15. Connecting pipe; 16. Fixing frame; 17. Second motor; 18. Rotating shaft; 19. Rigid plate; 20. Gear; 21. Anti-slip pad; 22. Positioning seat; 23. Air inlet pipe; 24. Solenoid valve; 25. Pressure sensor; 26. Piston; 27. Spring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] This utility model provides a technical solution as follows: Figure 1-4 As shown, a positioning fixture for a flexible manufacturing production line includes a mounting base 1. A drive base 3 and a fixed platform 2 are fixedly mounted on the outer side of the mounting base 1. An inflation assembly is mounted on the outer side of the fixed platform 2. Two movable plates 4 are symmetrically slidably connected to the outer side of the drive base 3 through a spacing adjustment mechanism. A fixed cylinder 5 is fixedly mounted on the outer side of each movable plate 4, and each fixed cylinder 5 is connected to the inflation assembly. A piston 26 and a push rod 6 are slidably connected inside each fixed cylinder 5. A spring 27 is installed between the outer side of each piston 26 and the outer side of the corresponding push rod 6. A pressure sensor 25 is installed on the bottom wall of each fixed cylinder 5. A U-shaped seat 7 is fixedly mounted on the end of each push rod 6 away from the piston 26. An airbag 8 is installed inside each U-shaped seat 7. Two rigid plates 19 are symmetrically arranged on the outer side of each U-shaped seat 7. An anti-slip pad 21 is installed on the outer side of each rigid plate 19. The two rigid plates 19 are symmetrically rotated by an opening and closing assembly. The two moving plates 4 are driven to slide towards each other by the spacing adjustment mechanism, which facilitates clamping of workpieces of different sizes. The opening and closing component is used to hide or unfold the rigid plate 19. When rigid clamping is required, it is clamped by the rigid plate 19. When flexible clamping is required, the airbag 8 is used for optical clamping.

[0017] Furthermore, each opening and closing assembly includes two rotating shafts 18, which are symmetrically rotatably connected to the top surface of the corresponding U-shaped seat 7. Each rigid plate 19 is fixedly installed on the outside of the corresponding rotating shaft 18. A gear 20 is installed on the outside of each rotating shaft 18, and every two corresponding gears 20 mesh with each other. It should be noted that the bottom of the U-shaped seat 7 is also symmetrically rotatably connected to two rotating shafts 18, and the bottom rotating shaft 18 is fixedly connected to the rigid plate 19 to improve the stability of the rigid plate 19.

[0018] Furthermore, the inflation assembly includes a dual-purpose air pump 13, which is fixedly installed on the top wall of the fixed platform 2. A guide tube 14 is fixedly installed on the top surface of the fixed platform 2 and is connected to the dual-purpose air pump 13. An air inlet pipe 23 is fixedly connected to the outside of each fixed tube 5. A solenoid valve 24 is installed on the outside of each air inlet pipe 23. The top end of each air inlet pipe 23 is connected to the guide tube 14 through a connecting pipe 15. It should be noted that the dual-purpose air pump 13 can inflate and deflate.

[0019] Furthermore, the spacing adjustment mechanism includes a double-ended screw 9, which is rotatably connected to the drive seat 3. Two threaded sleeves 11 are slidably connected inside the drive seat 3, and each moving plate 4 is fixedly installed on the outside of the corresponding threaded sleeve 11. The two threaded sleeves 11 are symmetrically threaded to the outside of the double-ended screw 9. A first motor 12 is fixedly installed on the outside of the drive seat 3, and the output shaft of the first motor 12 is coaxially connected to the double-ended screw 9.

[0020] Furthermore, a limiting rod 10 is fixedly installed inside the drive seat 3, and each threaded sleeve 11 is slidably connected to the limiting rod 10. A positioning seat 22 is fixedly installed on the outside of each fixed cylinder 5, and each air inlet pipe 23 passes through the corresponding positioning seat 22.

[0021] Furthermore, a fixing frame 16 is fixedly installed on the top surface of each U-shaped seat 7, and a second motor 17 is fixedly installed on the top surface of each fixing frame 16. The bottom output shaft of each second motor 17 is coaxially connected to the corresponding rotating shaft 18. Each second motor 17 adopts a conical rotor motor, and its output shaft can be locked after power failure.

[0022] This utility model provides a positioning fixture for a flexible manufacturing production line. The specific working principle is as follows: First, according to the workpiece size, the first motor 12 is started to drive the double-headed screw 9 to rotate. Under the guidance of the limiting rod 10, the two threaded sleeves 11 drive the moving plate 4 and the fixed cylinder 5 to slide towards each other and adjust to the appropriate spacing. The workpiece is then placed in the positioning area. The dual-purpose air pump 13 is started, and air is pumped into the fixed cylinder 5 through the guide tube 14, connecting pipe 15 and air inlet pipe 23. The piston 26 is pressed to push the push rod 6 to extend. The U-shaped seat 7 approaches the workpiece. The air bag 8 first contacts the workpiece and inflates and presses the spring 27 to achieve flexible pre-clamping. The pressure sensor 25 monitors the pressure in the fixed cylinder 5 in real time. When the set value is reached, the solenoid valve 24 closes and stops the inflation. If rigid clamping is required, start the second motor 17, whose output shaft drives the top rotating shaft 18 to rotate. Through the meshing transmission of the gear 20, the bottom rotating shaft 18 rotates synchronously in the opposite direction, so that the two rigid plates 19 are in contact. Then, through the cooperation of the inflation component and the spacing adjustment mechanism, the anti-slip pad 21 is tightly attached to the workpiece to complete the fixation. After processing, the dual-purpose air pump 13 switches to the venting mode, the solenoid valve 24 opens, the spring 27 and piston 26 return to their original positions, the push rod 6 retracts, and at the same time the second motor 17 reverses, the rigid plate 19 unfolds and hides, and the workpiece can be taken out. The whole process meets the positioning requirements of different workpieces by flexibly switching between flexible and rigid clamping.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning fixture for a flexible manufacturing production line, comprising a mounting base (1), characterized in that, A drive seat (3) and a fixed platform (2) are fixedly installed on the outer side of the mounting base (1). An inflation assembly is installed on the outer side of the fixed platform (2). Two movable plates (4) are symmetrically slidably connected to the outer side of the drive seat (3) through a spacing adjustment mechanism. A fixed cylinder (5) is fixedly installed on the outer side of each movable plate (4), and each fixed cylinder (5) is connected to the inflation assembly. A piston (26) and a push rod (6) are slidably connected inside each fixed cylinder (5). The outer side of each piston (26) is connected to the outer side of the corresponding push rod (6). Each of the two fixed cylinders (5) is equipped with a spring (27), and each fixed cylinder (5) is equipped with a pressure sensor (25) on its bottom wall. Each push rod (6) is fixedly equipped with a U-shaped seat (7) at the end away from the piston (26). Each U-shaped seat (7) is equipped with an airbag (8). Each U-shaped seat (7) is symmetrically provided with two rigid plates (19) on its outer side. Each rigid plate (19) is equipped with an anti-slip pad (21) on its outer side. Each U-shaped seat (7) is controlled by an opening and closing assembly to rotate the two rigid plates (19) symmetrically.

2. The positioning fixture for a flexible manufacturing production line according to claim 1, characterized in that, Each of the opening and closing components includes two rotating shafts (18), and the two rotating shafts (18) are symmetrically rotated and connected to the top surface of the corresponding U-shaped seat (7). Each rigid plate (19) is fixedly installed on the outside of the corresponding rotating shaft (18). A gear (20) is installed on the outside of each of the rotating shafts (18), and every two corresponding gears (20) mesh with each other.

3. A positioning fixture for a flexible manufacturing production line according to claim 2, characterized in that, The inflation assembly includes a dual-purpose air pump (13), which is fixedly installed on the top wall of the fixed platform (2). A guide tube (14) is fixedly installed on the top surface of the fixed platform (2), and the guide tube (14) is connected to the dual-purpose air pump (13). An air inlet pipe (23) is fixed and connected to the outside of each fixed tube (5). A solenoid valve (24) is installed on the outside of each air inlet pipe (23). The top end of each air inlet pipe (23) is connected to the guide tube (14) through a connecting pipe (15).

4. A positioning fixture for a flexible manufacturing production line according to claim 3, characterized in that, The spacing adjustment mechanism includes a double-headed screw (9), which is rotatably connected to the drive seat (3). Two threaded sleeves (11) are slidably connected inside the drive seat (3), and each moving plate (4) is fixedly installed on the outside of the corresponding threaded sleeve (11). The two threaded sleeves (11) are symmetrically threaded to the outside of the double-headed screw (9). A first motor (12) is fixedly installed on the outside of the drive seat (3), and the output shaft of the first motor (12) is coaxially connected to the double-headed screw (9).

5. A positioning fixture for a flexible manufacturing production line according to claim 4, characterized in that, The drive seat (3) is fixedly installed with a limit rod (10), and each threaded sleeve (11) is slidably connected to the limit rod (10). Each fixed cylinder (5) is fixedly installed with a positioning seat (22) on its outer side, and each air inlet pipe (23) passes through the corresponding positioning seat (22).

6. A positioning fixture for a flexible manufacturing production line according to claim 5, characterized in that, Each of the U-shaped seats (7) has a fixed bracket (16) fixedly installed on its top surface, and a second motor (17) is fixedly installed on the top surface of each of the fixed brackets (16). The bottom output shaft of each second motor (17) is coaxially connected to the corresponding rotating shaft (18). Each second motor (17) is a conical rotor motor.

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