Workpiece automatic turnover tool of sheet metal spraying assembly line

Abstract

The utility model relates to a workpiece automatic turnover frock of sheet metal spraying assembly line, and the utility model relates to flow line gripper equipment technical field, and the rotary arm gripper is two and presents the symmetry setting, and the rotary arm gripper activity sets up below the frame, and the flywheel is two groups and rotates the axle and sets up on the frame, and the end face of flywheel is provided with the guide slot, and the lifting frame is two and activity sets up in the frame, and two groups lifting frame respectively with two rotary arm gripper transmission setting, and the guide frame is fixedly arranged on the upper end of lifting frame, and the guide frame is fixedly provided with the guide pin, and the guide pin activity sets up in the guide slot, and its through the design of the two feet symmetry gripper structure, and the optimization staggered lifting structure, through servo mechanism control the lifting of gripper, realize in the flow transmission and take the workpiece and turn over and put down, realize the workpiece's clamping operation under the condition of not needing accurate positioning control, be applicable to low accuracy flow line feeding, to realize the workpiece's turnover operation.

Description

Technical Field

[0001] This utility model relates to the technical field of assembly line gripper equipment, specifically to an automatic workpiece flipping fixture for a sheet metal spraying assembly line. Background Technology

[0002] In sheet metal workpiece assembly line painting operations, when the entire outer surface of the workpiece needs to be painted, the workpiece needs to be flipped to achieve painting on both the top and bottom sides. The flipping equipment usually set up in the assembly line operation requires a precise flow controller to achieve precise cooperation between the gripper and the workpiece. Moreover, the flipping gripper usually needs to be designed with more than three servo joints to achieve workpiece gripping and flipping, which increases the equipment operating cost. Especially in the workpiece flow transfer, it is necessary to match it with precise timed accumulation fixtures. Therefore, in order to optimize the assembly line processing and simplify its control operation, it is necessary to design a new type of workpiece flipping fixture. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of existing technologies by providing an automatic workpiece flipping fixture for sheet metal spraying production lines. Through the design of a bipedal symmetrical gripper structure and an optimized staggered lifting structure, the lifting of the grippers is controlled by a servo mechanism to achieve workpiece clamping, flipping, and placement during continuous conveying. This enables workpiece clamping operations without the need for precise positioning control and is suitable for low-precision production line feeding, thereby realizing the workpiece flipping operation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] It includes a frame and two symmetrically arranged rotary grippers, which are movably positioned below the frame. It also includes two sets of flywheels, each spun onto the frame via a shaft, with guide grooves on their end faces; two lifting frames, each movably positioned within the frame, with each set of lifting frames connected to one of the two rotary grippers; a guide frame, fixedly positioned at the upper end of the lifting frames; and guide pins, fixedly mounted on the guide frames and movably positioned within guide grooves.

[0006] Preferably, slide rail pairs are fixedly provided on both the left and right ends of the frame, and two lifting frames are slidably mounted on the slide rail pairs on both sides. A transmission frame is slidably mounted on the slide rail pairs, and the transmission frame is connected to the lifting frame. The rotating arm gripper is fixedly mounted on the lower end of the transmission frame.

[0007] Preferably, gear reducers are fixedly installed at both ends of the frame, and the gear reducers are located between the lifting frame and the transmission frame on the same slide rail pair. Transmission components are installed on both the input shaft side and the output shaft side of the gear reducers, one set of transmission components is configured to cooperate with the lifting frame, and the other set of transmission components is configured to cooperate with the transmission frame.

[0008] Preferably, the transmission assembly includes: a main gear, wherein the main gear located on one side of the input shaft of the gear reducer is fixedly mounted on the input shaft of the gear reducer, and the main gear located on one side of the output shaft of the gear reducer is fixedly mounted on the output shaft of the gear reducer; a secondary gear, wherein two secondary gears are grouped together and screwed onto the outer wall of the gear reducer via a rotating shaft, and both secondary gears in a group mesh with the corresponding main gears; and a rack, wherein the rack is located on the side of the gear reducer and meshes with the two secondary gears in a group, wherein the rack located on the input shaft side of the gear reducer is fixedly mounted on the lifting frame, and the rack located on the output shaft side of the gear reducer is fixedly mounted on the transmission frame.

[0009] Preferably, the guide groove on the flywheel includes an inner arc segment, an outer arc segment, and two curved segments, wherein the inner arc segment and the outer arc segment are respectively arranged opposite to each other on both sides of the flywheel's axis, and the two outer arc segments respectively connect the two ends of the inner arc segment and the outer arc segment.

[0010] Preferably, the set of flywheels consists of two flywheels arranged side by side and screwed onto the frame via a rotating shaft. The guide frames are arranged in groups of two and are respectively matched with the two flywheels of the group. The two groups of flywheels are connected by a transmission shaft, and the transmission shaft is screwed onto the frame via bearings. The two flywheels on one transmission shaft are set at a certain offset angle. A drive motor is fixedly installed at one end of the frame. A drive shaft is fixedly installed on the output shaft of the drive motor and is screwed onto the frame via bearings. The drive shaft is connected to the shaft ends of the two flywheels in one group via a bevel gear set.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This solution uses a flywheel with a guide groove structure, and a guide frame and guide pins to achieve transmission between the flywheel and the lifting frame. A gear reducer is used to achieve transmission between the lifting frame and the transmission frame, thereby controlling the lifting and moving of the rotary arm gripper. In conjunction with a servo device, the dynamic position of the rotary arm gripper is controlled, thus enabling the clamping and flipping of workpieces moving in a continuous flow. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 yes Figure 1Rear side view.

[0015] Figure 3 This is a schematic diagram of the frame structure in this utility model.

[0016] Figure 4 This is a structural schematic diagram of the lifting frame, flywheel, and drive shaft in this utility model.

[0017] Figure 5 This is a structural schematic diagram of the lifting frame and guide frame in this utility model.

[0018] Figure 6 This is a schematic diagram of the transmission component in this utility model.

[0019] Figure 7 This is a time-height linear graph of the transmission frame on the right side in this utility model.

[0020] Figure 8 This is a time-height linear graph of the transmission frame on the left side in this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Swivel arm gripper; 3. Flywheel; 4. Guide groove; 4-1. Inner arc segment; 4-2. Outer arc segment; 4-3. Curved segment; 5. Guide frame; 6. Guide pin; 7. Slide rail pair; 8. Transmission frame; 9. Gear reducer; 10. Transmission assembly; 10-1. Main gear; 10-2. Secondary gear; 10-3. Rack; 11. Transmission shaft; 12. Drive motor; 13. Drive shaft; 14. Lifting frame. Detailed Implementation

[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] like Figure 1-8 As shown, the specific implementation adopts the following technical solution:

[0024] This specific embodiment includes a frame 1 and a rotary arm gripper 2. Slide rail pairs 7 are fixedly installed on both the left and right ends of the frame 1. A lifting frame 14 and a transmission frame 8 are movably mounted on one slide rail pair 7. The rotary arm gripper 2 is fixedly installed at the lower end of the transmission frame 8, and the grippers on the left and right sides are symmetrically arranged. The rotary arm gripper 2 is electrically driven to achieve axial rotation and gripper opening and closing. A set of two flywheels 3 are respectively installed on both the left and right ends of the frame 1 and are spun onto the frame 1 via a rotating shaft. The flywheels 3 on the left and right sides are connected by a transmission shaft 11. The flywheel 3 is mounted on a frame 1. A drive motor 12 is fixedly mounted on the right end of the frame 1. A drive shaft 13 is fixedly mounted on the output shaft of the drive motor 12 and is spun onto the frame 1 via bearings. The drive shaft 13 is connected to the shaft ends of the two flywheels 3 on the right side via a bevel gear set. The flywheel 3 is provided with a guide groove 4, which includes an inner arc segment 4-1, an outer arc segment 4-2, and a curved segment 4-3. The flywheel 3 is divided into six equal parts at 60° angles around its axis. The inner arc segment 4-1 and the outer arc segment 4-2 are respectively located in two symmetrically divided parts of the flywheel 3 at 180° angles. The curved segment 4-3... -3 occupies two 60° equally divided parts, and the two curved segments 4-3 are symmetrically arranged at 180°, respectively connecting the two ends of the inner arc segment 4-1 and the outer arc segment 4-2. The interfaces of the inner arc segment 4-1, the curved segment 4-3, and the outer arc segment 4-2 are smoothly chamfered. The two flywheels 3 located at both ends of the same drive shaft 11 are set at a 60° offset angle. A set of two guide frames 5 is fixedly installed at the upper end of the lifting frame 14, and the two guide frames 5 are respectively mounted on the two flywheels 3 of the set. A guide pin 6 is fixedly installed on the guide frame 5, and the guide pin 6 is slidably inserted into the guide groove 4. The frame 1 is located on a sliding... A gear reducer 9 is provided between the lifting frame 14 and the transmission frame 8 on the rail pair 7. The gear reducer 9 is fixedly mounted on the frame 1. A main gear 10-1 is fixedly mounted on both the input shaft and the output shaft of the gear reducer 9. Two auxiliary gears 10-2 are provided on the outer side walls of both ends of the gear reducer 9, and the two auxiliary gears 10-2 in a group are meshed with the corresponding main gears 10-1. A rack 10-3 is meshed with the side of the auxiliary gear 10-2. One rack 10-3 is fixedly mounted on the lifting frame 14, and the other rack 10-3 is fixedly mounted on the transmission frame 8.

[0025] When using this device, the frame 1 is fixedly mounted on an external lifting control unit, thereby enabling the overall lifting and moving of the device to be controlled by the external lifting control unit. Based on the flywheel 3 structure divided into six equal parts, the working stroke of this device is divided into six equally spaced strokes: T1, T2, T3, T4, T5, and T6. The drive motor 12 drives the drive shaft 13 to rotate, which in turn drives the two sets of flywheels 3 on the left and right sides to rotate via bevel gear sets and drive shaft 11. When the flywheels 3 rotate, causing the guide pin 6 to slide within the inner arc segment 4-1 and the outer arc segment 4-2, the lifting frame 14 remains stationary. When the guide pin 6 slides within the curved segment 4-3 from the inner arc segment 4-1 to the outer arc segment 4-2, the lifting frame 14 descends; conversely, when the guide pin 6 slides within the curved segment 4-3 from the outer arc segment 4-2 to the inner arc segment 4-1, the lifting frame 14 rises. The movement of the lifting frame 14 moves the rack 10-3 on it, thereby driving the input shaft of the gear reducer 9 to rotate through the meshing secondary gear 10-2 and main gear 10-1 in a step-by-step transmission. The gear reducer 9 accelerates the transmission and outputs through its output shaft, achieving a step-by-step transmission through the main gear 10-1, secondary gear 10-2, and meshing rack 10-3 on the output shaft of the gear reducer 9. The transmission frame 8 is moved, and the transmission frame 8 and the lifting frame 14, which are located on the same slide rail pair 7, move in the same direction. The moving speed of the transmission frame 8 is greater than that of the lifting frame 14. The workpiece moves from left to right, and the device flips the workpiece. In section T1, the right transmission frame 8 descends while the left transmission frame 8 remains stationary. In section T2, the transmission frames 8 on both sides descend simultaneously, and at the end of section T2, the right-side rotary arm clamp 2 closes to clamp the incoming workpiece. In section T3, the right transmission frame 8 remains stationary while the left transmission frame 8 descends. At the end of section T3, the drive motor 12 stops outputting, and the left-side rotary arm clamp 2 closes to clamp the workpiece. Next, the workpiece is lifted by the external lifting unit. Then, the workpiece is rotated 180° by the left and right rotating arm grippers 2 and then the device is lowered to put the workpiece down. Then, the right rotating arm gripper 2 opens to release the workpiece. In section T4, the right transmission frame 8 rises while the left transmission frame 8 remains stationary. At the end of section T4, the left rotating arm gripper 2 opens to release the workpiece, which begins to move to the right. In section T5, the left and right transmission frames 8 rise simultaneously. In section T6, the right transmission frame 8 remains stationary while the left transmission frame 8 rises. Thus, at the end of section T6, the left and right transmission frames 8 rise to the same level, and then the next cycle begins.

[0026] Compared with the prior art, the beneficial effects of this utility model are:

[0027] 1. This device uses openable and flipable rotary arm jaws 2 to clamp the workpiece, and realizes the flipping of the workpiece by the cooperation of the left and right rotary arm jaws 2.

[0028] 2. This device uses a flywheel 3 with an arc groove structure and a lifting frame 14 that cooperates with the arc groove on the flywheel 3. Through the gear reduction box 9, the transmission frame 8 is driven to move, thereby controlling the lifting and moving of the left and right rotating arm grippers 2, realizing the operation of the workpiece entering, and flipping to complete the delivery of the workpiece.

[0029] 3. This device controls the deflection angle of the two sets of flywheels 3 and the lifting stroke of the two sets of transmission frames 8 through the guide groove 4 structure composed of inner arc segment 4-1, outer arc segment 4-2 and curved segment 4-3. In this way, the device controls the height position of the rotating arm gripper 2 to operate the workpiece and maintain the continuous movement of the workpiece in the production line.

[0030] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A workpiece automatic turnover tool for sheet metal spraying assembly line, comprising a rack (1) and a rotary arm clamping jaw (2), wherein the rotary arm clamping jaw (2) is two and symmetrically arranged front and back, and the rotary arm clamping jaw (2) is movably arranged below the rack (1); characterized in that, It also includes: a flywheel (3), which consists of two sets and is spun onto the frame (1) via a rotating shaft, with a guide groove (4) provided on the end face of the flywheel (3); a lifting frame (14), which consists of two lifting frames (14) and is movably disposed within the frame (1), with the two sets of lifting frames (14) respectively connected to two rotating arm grippers (2); a guide frame (5), which is fixedly disposed at the upper end of the lifting frame (14); and a guide pin (6), which is fixedly disposed on the guide frame (5) and is movably disposed within the guide groove (4).

2. The automatic workpiece flipping fixture for a sheet metal spraying production line according to claim 1, characterized in that: The frame (1) is fixedly provided with slide rail pairs (7) at both ends. Two lifting frames (14) are slidably mounted on the slide rail pairs (7) on both sides. A transmission frame (8) is slidably mounted on the slide rail pairs (7). The transmission frame (8) and the lifting frame (14) are connected by transmission. The rotating arm gripper (2) is fixedly mounted at the lower end of the transmission frame (8).

3. The automatic workpiece flipping fixture for a sheet metal spraying production line according to claim 2, characterized in that: The frame (1) is fixedly provided with gear reducers (9) at both ends. The gear reducers (9) are located between the lifting frame (14) and the transmission frame (8) on the same slide rail pair (7). The input shaft side and the output shaft side of the gear reducers (9) are provided with transmission components (10). One set of transmission components (10) is configured to cooperate with the lifting frame (14), and the other set of transmission components (10) is configured to cooperate with the transmission frame (8).

4. The automatic workpiece flipping fixture for a sheet metal spraying production line according to claim 3, characterized in that: The transmission assembly (10) includes: a main gear (10-1), which is fixedly mounted on the input shaft of the gear reducer (9) and on the output shaft of the gear reducer (9); a secondary gear (10-2), which is set in pairs and rotated on the outer wall of the gear reducer (9) via a rotating shaft, wherein the two secondary gears (10-2) in a pair mesh with the corresponding main gear (10-1); and a rack (10-3), which is set on the side of the gear reducer (9) and meshes with the two secondary gears (10-2) in a pair, wherein the rack (10-3) on the input shaft of the gear reducer (9) is fixedly mounted on the lifting frame (14) and the rack (10-3) on the output shaft of the gear reducer (9) is fixedly mounted on the transmission frame (8).

5. The automatic workpiece flipping fixture for a sheet metal spraying production line according to claim 4, characterized in that: The guide groove (4) on the flywheel (3) includes an inner arc segment (4-1), an outer arc segment (4-2), and two curved segments (4-3). The inner arc segment (4-1) and the outer arc segment (4-2) are respectively arranged opposite to each other on both sides of the axis of the flywheel (3), and the two outer arc segments (4-2) respectively connect the two ends of the inner arc segment (4-1) and the outer arc segment (4-2).

6. The automatic workpiece flipping fixture for a sheet metal spraying production line according to claim 5, characterized in that: The set of flywheels (3) consists of two and are arranged side by side and are screwed onto the frame (1) via a rotating shaft. The guide frame (5) consists of two and is arranged in pairs with the two flywheels (3) of the set. The two sets of flywheels (3) are connected by a transmission shaft (11) and the transmission shaft (11) is screwed onto the frame (1) via a bearing. The two flywheels (3) on one transmission shaft (11) are set at a certain offset angle. A drive motor (12) is fixedly installed at one end of the frame (1). A drive shaft (13) is fixedly installed on the output shaft of the drive motor (12) and is screwed onto the frame (1) via a bearing. The drive shaft (13) is connected to the shaft end of one of the two flywheels (3) via a bevel gear set.

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