Workpiece posture adjusting device

Abstract

The utility model discloses a workpiece posture adjusting device, including the reset push mechanism of setting in workpiece conveyer belt one side, the opposite setting of pneumatic turnover device has at workpiece conveyer belt's other side, reset push mechanism is used for pushing workpiece to pneumatic turnover device, the pneumatic turnover device is used for blowing after overturning workpiece, servo motor starts, and the guiding slide block is moved in the positioning pin track by the translation straight bar, and workpiece on the axis in conveyer belt is pushed to the pneumatic turnover device of conveyer belt one side, and the air flow of push block baffle utilizes the camber of baffle itself and horizontal blow -off mouth, makes workpiece completely overturn and falls into the cavity of push -on slide block, and push -on slide block is guided workpiece to the middle axis back -off along the positioning pin track, and when back -off to the middle axis, push -on slide block lifts and separates completely with workpiece under the restriction of positioning pin track, and then returns standby position, solved the problem that artificial overturning is low in efficiency, and automatic overturning is unstable and the poor problem of part specification adaptability.

Description

Technical Field

[0001] This utility model relates to the field of workpiece processing, and specifically to a workpiece posture adjustment device. Background Technology

[0002] Different styles of workpieces have their own unique appearance features and structural characteristics, such as whether they have raised patterns, opening positions, or special materials. This means that the packaging process needs to control their posture precisely to ensure that each workpiece is presented in a standard and optimal posture: displaying prominent patterns, ensuring that the openings face the same direction, and maximizing the display effect of the brand logo.

[0003] Traditional manual flipping methods are inefficient and cumbersome when dealing with complex and diverse workpiece packaging needs. Their operating speed is difficult to adapt to high-speed production lines, easily causing production stoppages; poor control of manual flipping force can lead to product quality issues, affecting appearance and user experience. Furthermore, variations in human skill levels result in insufficient uniformity of finished products, hindering batch standardization management. To address these challenges, modern packaging production lines are increasingly incorporating automated flipping modules equipped with advanced vision recognition systems and sensors, capable of identifying and adjusting different workpiece styles.

[0004] Current automated flipping modules can accurately flip workpieces, but their pushing mechanisms often use direct cylinder drive or simple linkage structures, which are prone to deviations in pushing distance due to air pressure fluctuations and insufficient rigidity of the rods. Furthermore, they are prone to collisions with the workpiece during the return stroke. Flipping technology often relies on mechanical grippers or single airflow impact. Mechanical grippers are prone to unstable clamping due to differences in workpiece shape, while single airflow is difficult to accurately control the flipping angle, often resulting in over-flipping or jamming. In addition, automated flipping devices are mostly designed for workpieces of fixed specifications, and the overall size of the mechanism needs to be adjusted when changing workpiece models, resulting in poor adaptability. Utility Model Content

[0005] To overcome the shortcomings of the prior art, the purpose of this utility model is to provide a workpiece posture adjustment device that solves the problems of low efficiency of manual flipping, unstable automated flipping, and poor compatibility of component specifications.

[0006] This utility model is achieved through the following technical solution: A workpiece posture adjustment device includes a reset and push mechanism disposed on one side of a workpiece conveyor belt, and a pneumatic flipping device disposed opposite to it on the other side of the workpiece conveyor belt. The reset and push mechanism is used to push the workpiece toward the pneumatic flipping device, and the pneumatic flipping device is used to flip the workpiece after blowing air.

[0007] Furthermore, the reset and ejection mechanism includes a servo motor, a crank rocker arm, a driven rocker arm, a translational straight rod, a translational bushing, a positioning pin, a trajectory limiting plate, a guide slider, and a push slider. The output shaft of the servo motor is fixedly connected to one end of the crank rocker arm, the other end of the crank rocker arm is movably connected to one end of the driven rocker arm, the other end of the driven rocker arm is movably connected to one end of the translational straight rod, the translational straight rod passes through the translational bushing fixed on the trajectory limiting plate, the other end of the translational straight rod is movably connected to the guide slider, the trajectory limiting plate has a positioning pin track, the guide slider has a positioning pin through it, the positioning pin is embedded in the positioning pin track, and is slidably connected with clearance fit, the other end of the guide slider is fixedly connected to the push slider through a rod.

[0008] Furthermore, the pneumatic flipping device includes a pusher baffle, an air inlet pipe, and an air storage tank; the pusher baffle is an arc-shaped cavity, with horizontal air inlets symmetrically opened in the middle of the inner wall of the arc-shaped cavity, and the air inlets are connected to the output end of an airflow generator installed on the air storage tank through the air inlet pipe; the bottom of the arc-shaped cavity of the pusher baffle is provided with a limiting groove adapted to the contour of the workpiece, which is used to temporarily position the workpiece.

[0009] Furthermore, the positioning pin track on the trajectory limiting plate is a convex track. A limiting block is provided at the protruding part of the convex track and on the positioning pin track. The limiting block has an irregular structure. The end face of the irregular structure away from the workpiece conveyor belt is inclined. The inclined end face is perpendicular to the bottom track of the convex track and the angle between it and the positioning pin is an acute angle. The end face of the irregular structure near the workpiece conveyor belt is a concave curved surface. The concave curved surface faces the inner wall of the protruding part of the convex track. When the guide slider is pushed out, the positioning pin moves in a straight line along the bottom track of the convex track. When the guide slider is reset, the positioning pin moves in a curved path along the upper track of the convex track.

[0010] Furthermore, a spring is fitted onto the portion of the positioning pin that is not embedded in the positioning pin track to ensure that the positioning pin is always in contact with the bottom of the positioning pin track.

[0011] Furthermore, the top surface of the irregular structure is provided with convex curved surfaces at both ends, and the convex curved surface on the side closer to the workpiece conveyor belt is higher than the convex curved surface on the side farther from the workpiece conveyor belt, which is used to lift the guide slider and run it slowly during reset.

[0012] Furthermore, the translational rod and the guide slider are connected by a shaft, which passes through the guide slider and extends into the positioning pin track to ensure the stability of the guide slider.

[0013] Furthermore, the distance between the shaft and the locating pin is greater than the lateral width of the limiting block.

[0014] Furthermore, the pusher slider is a cavity with a curved surface, and the bottom of the cavity is provided with a toothed structure.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: The reset and ejection mechanism of this utility model utilizes a combination of a servo motor, a crank-rocker, and a translational bushing constraint. The servo motor precisely controls the rotation speed and angle, and, in conjunction with the rigid transmission of the crank-rocker and the driven rocker, stably converts circular motion into linear motion of a translational rod. Simultaneously, the translational bushing fixed to the track limiting plate provides strict radial constraint on the translational rod, completely limiting its vertical and radial offset. Combined with the vertical track guiding the pusher slider, the workpiece pushing distance error during the outward stroke is controlled within ±0.5mm, far superior to the ±3mm deviation range of traditional mechanisms. Furthermore, through optimized rod length and convex structure track path planning, the pusher slider can first horizontally retract to the workpiece's centerline during the return stroke, and then vertically rise along the track to pass over the workpiece, avoiding contact and friction with the workpiece and solving the workpiece scratching problem caused by collisions during the return stroke in traditional mechanisms.

[0016] This utility model's pneumatic flipping device features an innovative structural improvement through a "composite drive of an arc-shaped cavity pusher baffle and dual horizontal air inlets": the arc-shaped cavity of the pusher baffle cooperates with the bottom limiting groove, first using mechanical thrust and arc-shaped guidance to induce an initial rotation of the workpiece at a preset angle, avoiding sudden changes in posture caused by direct airflow impact; when the workpiece reaches the flipping critical point, the dual horizontal air inlets synchronously spray air at an adjustable flow rate of 5-15 m / s, with the airflow point precisely aligned with the side of the workpiece's center of gravity. This provides stable flipping power and allows for adaptation to workpieces of different weights by adjusting the airflow speed. For example, a flow rate of 5-8 m / s is used for light workpieces to avoid over-flipping, while a flow rate of 12-15 m / s is used for heavy workpieces to ensure complete flipping. This solves the problems of unstable clamping by mechanical grippers due to differences in workpiece shape, and the difficulty in accurately controlling the flipping angle with a single airflow, often resulting in over-flipping or jamming.

[0017] This utility model utilizes a servo motor-driven start-up transmission, enabling continuous completion of the pushing and flipping processes on the same machine without manual workpiece transfer. Simultaneously, the push mechanism's reset phase employs track constraints to automate the "retract-lift-return" motion, eliminating the need for additional drive components and allowing direct entry into standby mode after reset. Compared to traditional manual processes, this device theoretically reduces the single workpiece posture adjustment time from 45 seconds to 12 seconds, increasing production efficiency by 275%, while simultaneously reducing labor costs and lowering the error rate caused by manual operation.

[0018] This invention achieves flexible adaptation by adjusting the length of the crank rocker and the driven rocker, combined with the adjustable speed of the servo motor, allowing for rapid adjustment to meet different pushing distance requirements without replacing any components. The flow rate of the dual horizontal air inlets is adjusted according to the workpiece, and the arc-shaped cavity and limiting groove of the push block baffle are adjusted without altering the overall support structure. This makes the device compatible with various workpiece sizes, such as cylindrical and square, with diameters of 30-150mm and weights of 50-500g. It solves the problem that traditional posture adjustment devices are mostly designed for fixed workpiece sizes, requiring overall adjustment of the mechanism dimensions when changing workpiece models, resulting in poor adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the reset and ejection mechanism of this utility model; Figure 3 This is a schematic diagram of the pneumatic tilting device of this utility model; Figure 4 This is a schematic diagram of the push block baffle of this utility model; Figure 5 This is a schematic diagram of the installation of the pneumatic tilting device of this utility model; Figure 6 This is a schematic diagram of the track limiting plate of this utility model; Figure 7 This is a schematic diagram of the structure of the positioning pin embedded in the positioning pin track of this utility model; Figure 8 This is a motion analysis diagram of the present invention.

[0020] In the diagram, 1-Reset ejection mechanism, 2-Pneumatic flipping device, 3-Workpiece conveyor belt, 4-Servo motor; 5-Motor mounting bracket; 6-Motor mounting plate; 7-Crank rocker arm; 8-Follower rocker arm; 9-Translation bushing; 10-Translation straight rod; 11-Positioning pin; 12-Trajectory limit plate; 13-Guide slider; 14-Push slider; 15-Push block baffle; 16-Transverse support frame; 17-Air inlet pipe; 18-Fixing plate; 19-Fixing connector; 20-Air tank; 21-Longitudinal support frame. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to specific embodiments. The description is for explanation and not limitation of the present invention.

[0022] refer to Figure 1As shown, a workpiece posture adjustment device includes a reset and push mechanism 1, which is disposed on one side of a workpiece conveyor belt 3. A pneumatic flipping device 2 is disposed opposite to the other side of the workpiece conveyor belt 3. The reset and push mechanism 1 is used to push the workpiece toward the pneumatic flipping device 2, and the pneumatic flipping device 2 is used to flip the workpiece after blowing air.

[0023] refer to Figure 2 As shown, the reset and ejection mechanism 1 includes a servo motor 4, a crank rocker arm 7, a driven rocker arm 8, a translational straight rod 10, a translational bushing 9, a positioning pin 11, a trajectory limit plate 12, a guide slider 13, and a push slider 14.

[0024] The servo motor 4 is fixed by the motor mounting plate 6 and the motor mounting bracket 5. Regarding the power input component connection, the output shaft of the servo motor 4 is fixedly connected to one end of the crank rocker arm 7. When the servo motor starts, it can directly drive the crank rocker arm 7 to perform circular motion around its own axis. Regarding the transmission component connection, the other end of the crank rocker arm 7 is hinged to one end of the driven rocker arm 8 via a rotating shaft, which can convert the circular motion of the crank rocker arm 7 into the swing motion of the driven rocker arm 8. The other end of the driven rocker arm 8 is hinged to one end of the translational straight rod 10, thereby transmitting the swinging power to the translational straight rod 10. In the motion constraint component connection, the translational straight rod 10 passes through the translational bushing 9 fixed on the trajectory limiting plate 12. The moving shaft sleeve 9 forms a radial constraint on the translation shaft, allowing only the translation rod 10 to reciprocate linearly in the horizontal direction, while restricting its displacement in the vertical direction and other radial directions. In the actuator connection part, the other end of the translation rod 10 is connected to the guide slider 13 via a shaft joint. The horizontal reciprocating motion of the translation rod 10 can synchronously drive the guide slider 13 to move, and the guide slider 13 is fitted into the trajectory limiting plate 12. The trajectory limiting plate 12 has a positioning pin track, and the guide slider 13 is provided with a positioning pin 11 through it. The positioning pin 11 is embedded in the positioning pin track and is slidably connected with clearance fit. The other end of the guide slider 13 is fixedly connected to the push slider 14 via a rod.

[0025] Furthermore, the translational rod 10 and the guide slider 13 are connected by a shaft, which passes through the guide slider 13 and extends into the positioning pin track to ensure the stability of the guide slider 13.

[0026] refer to Figure 3 , 4 As shown in Figure 5, the pneumatic tilting device 2 includes a push block baffle 15, a transverse support frame 16, an air inlet pipe 17, a fixing plate 18, a fixing connector 19, an air storage tank 20, and a longitudinal support frame 21.

[0027] A longitudinal support frame 21 is disposed on the side of the workpiece conveyor belt 3, and a transverse support frame 16 is fixedly installed on the longitudinal support frame 21. The push block baffle 15 is fixed to the transverse support frame 16 by a fixed connector 19 and a fixing plate 18. The push block baffle 15 is an arc-shaped cavity, and horizontal air blowing ports are symmetrically opened at the middle of the inner side wall of the arc-shaped cavity. The opening of the push block baffle 15 faces the reset and push-out mechanism 1, thereby ensuring that the workpiece pushed by the push slider can accurately enter the arc-shaped cavity of the push block baffle 15. The spray direction of the two air blowing ports is towards the critical point of the workpiece flipping in the cavity. At the same time, the air blowing ports are connected to the airflow installed on the air storage tank 20 through the air inlet pipe 17. The output end of the generator is connected; the airflow is provided by the air tank 20 and delivered to the airflow generator. The airflow generator can convert the airflow provided by the air tank 20 into compressed air with an adjustable flow rate of 5-15m / s. The compressed air is then delivered to the double horizontal air blowing port through the air inlet pipe 17 to form a synchronous jet airflow. In the auxiliary positioning component connection, the bottom of the arc-shaped cavity of the push block baffle 15 is provided with a limiting groove that matches the contour of the workpiece. The limiting groove is aligned with the pushing path of the push slider 14. When the workpiece is pushed into the push block baffle 15, the limiting groove can temporarily position the workpiece, effectively preventing the workpiece from shifting before flipping, thereby ensuring that the airflow of the double horizontal air blowing port can accurately act on the workpiece.

[0028] After the reset and ejection mechanism 1 pushes the workpiece a certain distance, the curved surface of the push block baffle 15 begins to guide it. Under the combined action of the mechanical thrust and the curved surface of the baffle, the workpiece undergoes a controllable angle change, completing the initial posture adjustment. When the workpiece reaches the critical point of the predetermined flipping angle, the dual air-blowing port system activates the compound flipping mechanism. The dual air-blowing ports simultaneously provide initial flipping power with an adjustable airflow speed of 5-15 m / s, causing the workpiece to completely flip and smoothly fall onto the workpiece conveyor belt 3 through the cavity of the push slider 14. The cavity is designed as a curved surface, which can support the workpiece from more angles and guide it into the cavity.

[0029] refer to Figure 6 As shown, the positioning pin track on the trajectory limiting plate 12 is a convex track. A limiting block is provided at the protruding part of the convex track and on the positioning pin track. The limiting block has an irregular structure; the end face of the irregular structure away from the workpiece conveyor belt 3 is inclined, perpendicular to the bottom track of the convex track, and the angle between the inclined end face and the positioning pin 11 is acute. The end face of the irregular structure near the workpiece conveyor belt 3 is a concave curved surface, facing the inner wall of the protruding part of the convex track. Convex curved surfaces are provided at both ends of the top surface of the irregular structure, with the convex curved surface near the workpiece conveyor belt 3 being higher than the convex curved surface away from the workpiece conveyor belt 3. This is used to lift the guide slider 13 and allow it to move slowly during reset. (Reference) Figure 7As shown, the portion of the positioning pin 11 not embedded in the positioning pin track is fitted with a spring to ensure that the positioning pin 11 is always in contact with the bottom of the positioning pin track.

[0030] When the guide slider 13 is pushed out, the positioning pin 11 moves along the bottom track of the convex track. When it passes the limiting block, due to the inclined design of the end face of its irregular structure, the depth of the positioning pin 11 embedded in the positioning pin track gradually decreases, and the spring of the positioning pin 11 is continuously compressed. When the positioning pin 11 passes the limiting block, the spring rebounds to the initial length, the depth of the positioning pin 11 embedded in the positioning pin track is restored, and it continues to slide. When the guide slider 13 is pushed out, the positioning pin 11 moves in a straight line along the bottom track of the convex track. When the guide slider 13 is reset, the positioning pin 11 first slides along the bottom track of the convex track, pushes the workpiece to the central axis of the workpiece conveyor belt 3 (i.e., the initial position of the workpiece), lifts up when it passes the concave curved surface of the irregular structure, and then returns to the initial position after passing the two convex curved surfaces on the top surface of the irregular structure. The positioning pin 11 moves in a curved motion along the upper track of the convex track. The trajectory limiting plate 12 and the limiting block guide the movement trajectory of the guide slider 13, ensuring that the guide slider 13 only moves along the path defined by the track, that is, it is pushed horizontally on the outward trip, lifted vertically on the return trip, and then moved horizontally back. The vertical lifting during the return trip can avoid hitting the workpiece and avoid contact and friction with the workpiece.

[0031] Furthermore, the distance between the shaft and the positioning pin 11 is greater than the lateral width of the limiting block.

[0032] The working principle of this utility model is as follows: After the workpiece is processed on the upstream conveyor belt, it flows into the current workpiece conveyor belt 3. When the workpiece is detected to have reached the designated position, the servo motor 4 starts, driving the crank rocker arm 7 to rotate. The rotation of the crank rocker arm 7 transmits power to the driven rocker arm 8, causing the driven rocker arm 8 to oscillate. This converts the circular motion of the motor into the oscillation of the driven rod, providing the power basis for the subsequent translational shaft motion. The oscillation of the driven rocker arm 8 drives the translational straight rod 10, which is fixed by the translational shaft sleeve 9, to reciprocate. The movement of the translational straight rod 10, in turn, drives the guide slider 13 to move along the designated path in the positioning pin track opened on the trajectory limit plate 12. Through this motion, the guide slider 13 can drive the pusher slider 14 to push the workpiece located on the central axis of the conveyor belt towards the pneumatic flipping device on one side of the conveyor belt, realizing the lateral movement of the workpiece. When the workpiece is pushed towards the pneumatic flipping device, the pusher baffle 15, utilizing its own curvature, causes the workpiece to rotate at a certain angle. Subsequently, two horizontal air outlets within the pusher baffle 15 continuously provide an uninterrupted airflow, causing the workpiece to completely flip and fall into the cavity of the pusher slider 14, completing the workpiece rotation and flipping operation. After completing the workpiece rotation and flipping action, the pusher slider 14, driven by the servo motor 4, guides the workpiece back along the positioning pin track towards the central axis. When the pusher slider 14 returns to the central axis, it is lifted and completely separated from the workpiece under the constraint of the positioning pin track, then returns to the standby position, preparing for the next cycle of operation, ensuring the continuity and efficiency of the entire processing flow.

[0033] like Figure 8 As specified, the dimensions of the reset and ejection mechanism of this utility model are shown below, with the lengths of each member as follows: (Length of crank and rocker arm) (Based on the length of the rocker arm) (Length of the translational straight rod) (The distance between the axis of the movable connecting rod and the guide slider and the positioning pin) (Distance between the locating pin and the pusher slider). The origin of the coordinate system is the rotation center of the crank-rocker arm. Horizontal to the right is The positive direction of the axis is vertically upward. Establish a Cartesian coordinate system along the positive axis; crank and rocker arm and The included angle of the axis is The guide slider moves along the track at the following coordinates: .

[0034] The track design is based on the movement of the workpiece pushing slider (hereinafter referred to as the slider), which is obtained through the inverse calculation of the slider's movement, and the calculation process is as follows: (1) Outbound journey stage: Let the theoretical distance the guide slider travels in the horizontal direction be... Based on the kinematic relationship of the mechanism, during the outward stroke, assume that the crank-rocker arm drives the driven rocker arm to move a distance of... Through inverse motion operations, relationships can be established using the law of cosines. Taking a crank-rocker as an example, let the center of rotation of the crank-rocker be... Let A be the connection point between the crank rocker and the driven rocker. Then: (1) When only considering the horizontal motion transmitted to the guide slider, and ignoring the effects of other complex motions (such as changes in linkage angles), the theoretical pushing distance is... With translational straight rod displacement There is a proportional relationship (assuming the transmission ratio is: (2) (2) Return journey: The guide slider needs to both retract a certain distance and then lift over the workpiece. Let the horizontal displacement of the guide slider during its return stroke be... The vertical displacement is Similarly, based on the kinematic relationships of each link and combined with trigonometric functions, the derivation is made. Let the crank angle be at a certain moment. , and The included angle of the axis is Determine the translational displacement of the straight rod using the law of cosines. Based on the connection relationship between the guide slider and the translational rod, we can obtain: (3) (4) Based on the above calculations, the lengths of the members are shown in Table 1: Table 1 Calculation results of member length The red arrow in the diagram indicates the push-out stroke, where the guide slider should push the workpiece to the push block baffle for reverse rotation via linear motion. The green arrow represents the return stroke, where a partial return stroke is required to retract the flipped workpiece back to the central axis of the conveyor belt, ensuring that the horizontal position of the workpiece remains consistent before and after the flip. Once the workpiece reaches the central axis, the push slider 14 needs to be lifted to prevent it from deviating from the axis. After passing the workpiece, the push slider 14 falls back to the standby position, preparing for the next cycle.

Claims

1. A workpiece posture adjustment device, characterized in that, It includes a reset and ejection mechanism (1) set on one side of the workpiece conveyor belt (3), and a pneumatic flipping device (2) set on the other side of the workpiece conveyor belt (3). The reset and ejection mechanism (1) is used to push the workpiece toward the pneumatic flipping device (2), and the pneumatic flipping device (2) is used to flip the workpiece after blowing air.

2. The workpiece posture adjustment device according to claim 1, characterized in that, The reset and ejection mechanism (1) includes a servo motor (4), a crank rocker arm (7), a driven rocker arm (8), a translational straight rod (10), a translational bushing (9), a positioning pin (11), a trajectory limit plate (12), a guide slider (13), and a push slider (14); the output shaft of the servo motor (4) is fixedly connected to one end of the crank rocker arm (7), the other end of the crank rocker arm (7) is movably connected to one end of the driven rocker arm (8), and the other end of the driven rocker arm (8) is movably connected to one end of the translational straight rod (10). The translational straight rod (10) is inserted into the translational bushing (9) fixed on the track limiting plate (12). The other end of the translational straight rod (10) is movably connected to the guide slider (13). The track limiting plate (12) has a positioning pin track. The guide slider (13) has a positioning pin (11) inserted through it. The positioning pin (11) is embedded in the positioning pin track and is slidably connected with clearance fit. The other end of the guide slider (13) is fixedly connected to the push slider (14) through the rod.

3. The workpiece posture adjustment device according to claim 1, characterized in that, The pneumatic flipping device (2) includes a push block baffle (15), an air inlet pipe (17), and an air storage tank (20). The push block baffle (15) is an arc-shaped cavity with horizontal air inlets symmetrically opened in the middle of the inner side wall of the arc-shaped cavity. The air inlets are connected to the output end of the airflow generator installed on the air storage tank (20) through the air inlet pipe (17). The bottom of the arc-shaped cavity of the push block baffle (15) is provided with a limiting groove that matches the contour of the workpiece, which is used to temporarily position the workpiece.

4. The workpiece posture adjustment device according to claim 2, characterized in that, The positioning pin track on the trajectory limiting plate (12) is a convex track. A limiting block is provided at the protrusion of the convex track and on the positioning pin track. The limiting block is an irregular structure. The end face of the irregular structure away from the workpiece conveyor belt (3) is inclined. The inclined end face is perpendicular to the bottom track of the convex track and the angle between it and the positioning pin (11) is an acute angle. The end face of the irregular structure near the workpiece conveyor belt (3) is a concave surface. The concave surface faces the inner wall of the protrusion of the convex track. When the guide slider (13) is pushed out, the positioning pin (11) moves in a straight line along the bottom track of the convex track. When the guide slider (13) is reset, the positioning pin (11) moves in a curve along the upper track of the convex track.

5. The workpiece posture adjustment device according to claim 4, characterized in that, The portion of the positioning pin (11) not embedded in the positioning pin track is fitted with a spring to ensure that the positioning pin (11) is always in contact with the bottom of the positioning pin track.

6. The workpiece posture adjustment device according to claim 4, characterized in that, The top surface of the irregular structure is provided with convex curved surfaces at both ends, and the convex curved surface on the side closer to the workpiece conveyor belt (3) is higher than the convex curved surface on the side away from the workpiece conveyor belt (3), which is used to lift the guide slider (13) and run it slowly when resetting.

7. The workpiece posture adjustment device according to claim 2, characterized in that, The translation rod (10) and the guide slider (13) are connected by a shaft, which passes through the guide slider (13) and extends into the positioning pin track to ensure the stability of the guide slider (13).

8. The workpiece posture adjustment device according to claim 7, characterized in that, The distance between the shaft and the positioning pin (11) is greater than the lateral width of the limiting block.

9. A workpiece posture adjustment device according to claim 2, characterized in that, The pusher slider (14) is a cavity with a curved surface and a toothed structure is arranged at the bottom of the cavity.

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