Multi-station turntable mechanism

Abstract

The utility model relates to the technical field of machining equipment, in particular to a multi-station rotary table mechanism which comprises a support, a rotary table body is arranged in the support, a driving device for driving the rotary table body to rotate is arranged at the center of the bottom of the support, guide grooves are formed in the inner walls of the two sides of the support, and the rotary table body is arranged in the guide grooves. A push rod penetrates through the inner wall of the guide groove, brake air cylinders connected with the outer end of the push rod are arranged on the outer walls of the two sides of the support, a push block connected with the inner end of the push rod is arranged in the guide groove, and a brake block is arranged on the outer side of the push block. A plurality of positioning seats matched with the brake block structures are arranged on the outer wall of the rotating disc body in a surrounding mode, and position sensors are arranged on the two sides of the edge of the top of the support. According to the multi-station rotary table mechanism, the positioning precision and stability of workpieces among the stations are remarkably improved, and the conditions that the positioning precision is reduced and the machining quality is unstable due to the problems of abrasion, gaps and the like of a mechanical transmission system are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing equipment, in particular to a multi-station turntable mechanism. Background Art

[0002] Automated production lines are increasingly used in modern industrial production. In particular, multi-station turntable mechanisms, as a crucial piece of automated equipment, are widely used in various precision machining applications. These mechanisms achieve efficient and precise production processes by securing the workpiece on a turntable and rotating it to different stations for continuous processing.

[0003] Currently, most multi-station turntable mechanisms use motor-driven mechanical drives to achieve workpiece positioning. Specifically, they rely on motors to drive mechanical components such as gears and cams to control the turntable's rotation angle and stop position, thereby positioning the workpiece between stations. While this method can meet basic positioning needs to a certain extent, due to the inherent characteristics of mechanical transmission systems, such as wear and clearance, positioning accuracy will gradually decrease over time, resulting in unstable processing quality. Utility Model Content

[0004] The purpose of the present utility model is to provide a multi-station turntable mechanism to solve the problem raised in the above background technology that when most of the current multi-station turntable mechanisms use motor mechanical drive to achieve workpiece positioning, the positioning accuracy gradually decreases and the processing quality is unstable due to factors such as wear and clearance inherent in the mechanical transmission system.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-station turntable mechanism, comprising a support, a turntable body is provided inside the support, and a driving device for driving the turntable body to rotate is provided at the center of the bottom of the support, guide grooves are provided on the inner walls of both sides of the support, a push rod passes through the inner wall of the guide groove, brake cylinders connected to the outer end of the push rod are provided on the outer walls of both sides of the support, and a push block connected to the inner end of the push rod is provided inside the guide groove, a brake block is provided on the outside of the push block, a number of positioning seats cooperating with the brake block structure are provided around the outer wall of the turntable body, and position sensors are provided on both sides of the top edge of the support.

[0006] Preferably, the brake block is of trapezoidal structure as a whole, and an engaging groove that matches the brake block structure is provided inside the positioning seat.

[0007] Preferably, guide blocks are provided at both upper and lower ends of the push block, and guide grooves matching the guide block structure are provided on both upper and lower inner walls of the guide groove.

[0008] Preferably, an annular slider is provided at the bottom of the turntable body, and an annular slide seat matching the annular slider structure is provided on the bottom inner wall of the support, and a rubber friction pad is provided on the inner wall of the annular slide seat.

[0009] Preferably, auxiliary support seats are provided on both sides of the bottom of the support, and recessed openings are provided at the upper ends of the auxiliary support seats, and auxiliary support mechanisms are provided at the recessed openings at the upper ends of the auxiliary support seats.

[0010] Preferably, the auxiliary support mechanism of the auxiliary support seat includes a movable plate, a hydraulic push rod and a shock-absorbing pad. One end of the movable plate is movably connected to the inner wall of the recessed opening at the upper end of the auxiliary support seat. The hydraulic push rod is connected between the bottom of the movable plate and the bottom wall of the recessed opening at the upper end of the auxiliary support seat. The shock-absorbing pad is fixed on the top of the movable plate.

[0011] Compared with existing technologies, the present invention significantly improves the positioning accuracy and stability of workpieces between workstations, effectively resolving issues such as wear and backlash in the mechanical transmission system that can lead to reduced positioning accuracy and unstable machining quality. High-precision position sensors and rapid response from the brake cylinder ensure precise positioning of the turntable at each workstation. The design of the guide grooves and push rods ensures a tight engagement between the brake block and the positioning seat, further enhancing braking reliability and stability and extending the life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a multi-station turntable mechanism of the utility model;

[0013] Figure 2 This is a schematic diagram of the partial structure of a support of a multi-station turntable mechanism of the utility model;

[0014] Figure 3 The utility model is a schematic diagram of a top view of a multi-station turntable mechanism.

[0015] In the figure: 1. Support; 2. Turntable body; 3. Driving device; 4. Auxiliary support seat; 41. Movable plate; 42. Hydraulic push rod; 43. Shock-absorbing pad; 5. Guide groove; 6. Push rod; 7. Brake cylinder; 8. Position sensor; 9. Push block; 10. Brake block; 11. Positioning seat; 12. Annular slider; 13. Annular slide; 14. Guide block. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-3The utility model provides a technical solution: a multi-station turntable mechanism, including a support 1, a turntable body 2 is provided inside the support 1 through a rotating shaft, and a driving device 3 for driving the turntable body 2 to rotate is provided at the center of the bottom of the support 1, the driving device 3 mainly includes a motor, a reducer and a coupling, guide grooves 5 are provided on the inner walls of both sides of the support 1, and a push rod 6 is passed through the inner wall of the guide groove 5. Brake cylinders 7 connected to the outer ends of the push rods 6 are provided on the outer walls of both sides of the support 1, the inner ends of the brake cylinders 7 are fixed to the outer wall of the support 1 by bolts, the output end of the brake cylinder 7 is welded and fixed to the outer end of the push rod 6 by a connecting piece, and a push block 9 connected to the inner end of the push rod 6 is provided inside the guide groove 5, and a brake block 10 is welded and fixed to the outer side of the push block 9. A number of positioning seats 11 that match the brake block 10 structure are welded and fixed around the outer wall of the turntable body 2. There are several positioning seats 11 that are evenly distributed, and position sensors 8 are installed on both sides of the top edge of the support 1. The model of the position sensor 8 is E3Z-LS61C and is connected to the brake cylinder 7 through a wire. The driving device 3 of this structure drives the turntable body 2 to rotate in the support 1. When the turntable body 2 rotates to a predetermined position, the position sensor 8 detects the position information of the turntable body 2 and sends a signal to the control system. The control system starts the brake cylinder 7. The piston rod of the brake cylinder 7 pushes the push rod 6 to move horizontally. When the push rod 6 moves, it drives the push block 9 to move horizontally in the guide groove 5 until the push block 9 pushes the brake The block 10 is tightly engaged with the corresponding positioning seat 11 to achieve precise positioning and stable braking of the turntable body 2, avoiding the situation where the positioning accuracy is reduced and the processing quality is unstable due to problems such as wear and clearance of the mechanical transmission system, and significantly improving the positioning accuracy and stability of the workpiece between each workstation. The brake block 10 is a trapezoidal structure as a whole, and the positioning seat 11 is provided with an interlocking groove that matches the structure of the brake block 10. The trapezoidal structure of this structure brake block 10 is tightly engaged with the interlocking groove inside the positioning seat 11 to form a stable locking state, ensuring the precise positioning and stable braking of the turntable body 2 at each workstation. Guide blocks 14 are welded and fixed at the upper and lower ends of the push block 9, and the upper and lower inner walls of the guide groove 5 are provided with guide blocks 14 that match the structure of the guide block 14. The guide block 14 slides along the guide groove of the inner wall of the guide groove 5 when the push rod 6 drives the push block 9 to move laterally in the guide groove 5, ensuring that the push block 9 maintains stability and linear motion during the movement, avoiding braking failure caused by the offset or jamming of the push block 9, and improving the movement accuracy of the push block 9. The bottom of the turntable body 2 is fixed with an annular slider 12 by screws, and the bottom inner wall of the support 1 is provided with an annular slide 13 that matches the structure of the annular slider 12, and the inner wall of the slide groove of the annular slide 13 is provided with a rubber friction pad. When the turntable body 2 rotates, this structure drives the annular slider 12 to slide in the slide groove of the annular slide 13, and the rubber friction pad on the inner wall of the annular slide 13 increases the friction between the annular slider 12 and the annular slide 13.To ensure that the turntable body 2 is stable and without shaking during the rotation process, auxiliary support seats 4 are provided on both sides of the bottom of the support 1, and the upper ends of the auxiliary support seats 4 are provided with recessed openings, and the recessed openings at the upper ends of the auxiliary support seats 4 are provided with auxiliary support mechanisms. The auxiliary support mechanisms of the auxiliary support seats 4 include a movable plate 41, a hydraulic push rod 42 and a shock-absorbing pad 43. The shock-absorbing pad 43 is made of polyurethane material with good shock absorption and wear resistance, and is suitable for occasions that need to withstand high loads and impacts for a long time. One end of the movable plate 41 is movably connected to the inner wall of the recessed opening at the upper end of the auxiliary support seat 4 through a pin shaft, and the hydraulic push rod 42 is connected to the bottom of the movable plate 41 and the inner wall of the recessed opening at the upper end of the auxiliary support seat 4. Between the bottom wall of the recessed opening at the upper end of the auxiliary support seat 4, the ends of the hydraulic push rod 42 and the bottom of the movable plate 41 are also hinged at the connection point with the bottom wall of the recessed opening at the upper end of the auxiliary support seat 4 through a pin shaft. The shock-absorbing pad 43 is adhesively fixed to the top of the movable plate 41. The auxiliary support seat 4 with this structure can be driven by the hydraulic push rod 42 to rotate the movable plate 41 to a suitable angle, thereby driving the shock-absorbing pad 43 to fit tightly against the bottom edge of the turntable body 2, providing additional support and shock-absorbing effects, ensuring the stability and balance of the turntable body 2 during rotation and braking, reducing vibration and impact, and further improving the operational smoothness and reliability of the entire mechanism.

[0018] Working principle: When using the multi-position turntable mechanism, first start the driving device 3, and the driving device 3 drives the turntable body 2 to rotate in the support 1. When the turntable body 2 rotates, it drives the annular slider 12 to slide in the slide groove of the annular slide 13. When the turntable body 2 rotates to the predetermined position, the position sensor 8 detects the position information of the turntable body 2 and sends a signal to the control system. The control system starts the brake cylinder 7. The piston rod of the brake cylinder 7 pushes the push rod 6 to move horizontally. When the push rod 6 moves, it drives the push block 9 to move horizontally in the guide groove 5. The guide block 14 on the push block 9 slides along the guide groove of the inner wall of the guide groove 5 until the push block 9 pushes the brake block 10 to tightly engage with the corresponding positioning seat 11. In addition, the hydraulic push rod 42 of the auxiliary support seat 4 can drive the movable plate 41 to rotate to a suitable angle, so that the shock-absorbing pad 43 fits tightly against the bottom edge of the turntable body 2, providing additional support and shock-absorbing effects, ensuring the stability and balance of the turntable body 2 during rotation and braking, thereby completing a series of tasks.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multi-station turntable mechanism, comprising a support (1), a turntable body (2) being provided inside the support (1), and a driving device (3) for driving the turntable body (2) to rotate being provided at the center of the bottom of the support (1), characterized in that: Guide grooves (5) are provided on both inner walls of the support (1), and push rods (6) are passed through the inner walls of the guide grooves (5). Brake cylinders (7) connected to the outer ends of the push rods (6) are provided on both outer walls of the support (1), and push blocks (9) connected to the inner ends of the push rods (6) are provided inside the guide grooves (5). Brake blocks (10) are provided on the outer sides of the push blocks (9). Several positioning seats (11) that match the brake blocks (10) are provided around the outer wall of the turntable body (2), and position sensors (8) are provided on both sides of the top edge of the support (1).

2. The multi-station turntable mechanism according to claim 1, characterized in that: The brake block (10) is of trapezoidal structure as a whole, and an engaging groove that matches the structure of the brake block (10) is provided inside the positioning seat (11).

3. The multi-station turntable mechanism according to claim 1, characterized in that: The upper and lower ends of the push block (9) are both provided with guide blocks (14), and the upper and lower inner walls of the guide groove (5) are both provided with guide grooves that match the guide block (14) structure.

4. The multi-station turntable mechanism according to claim 1, characterized in that: An annular slider (12) is provided at the bottom of the turntable body (2), and an annular slide seat (13) that matches the annular slider (12) is provided on the bottom inner wall of the support (1), and a rubber friction pad is provided on the inner wall of the annular slide seat (13).

5. The multi-station turntable mechanism according to claim 1, characterized in that: Auxiliary support seats (4) are provided on both sides of the bottom of the support (1), and recessed openings are provided at the upper ends of the auxiliary support seats (4), and auxiliary support mechanisms are provided at the recessed openings at the upper ends of the auxiliary support seats (4).

6. The multi-station turntable mechanism according to claim 5, characterized in that: The auxiliary support mechanism of the auxiliary support seat (4) includes a movable plate (41), a hydraulic push rod (42) and a shock-absorbing pad (43), one end of the movable plate (41) is movably connected to the inner wall of the recessed opening at the upper end of the auxiliary support seat (4), the hydraulic push rod (42) is connected between the bottom of the movable plate (41) and the bottom wall of the recessed opening at the upper end of the auxiliary support seat (4), and the shock-absorbing pad (43) is fixed to the top of the movable plate (41).

Images