Rotary closing-in device

Abstract

The invention provides a rotary closing-in device which comprises a driving unit, a rotary bearing and a closing-in tool, the output end of the driving unit is connected with the rotary bearing, the driving unit drives the rotary bearing to rotate, a tool mounting plate rotating along with the rotary bearing is arranged on the rotary bearing, and the closing-in tool is arranged on the tool mounting plate. A curve guide groove is formed in the tool mounting plate, the closing tool comprises a limiting part and a transmission part, a plurality of linear guide grooves are distributed in the circumferential direction of the limiting part, the transmission part is arranged in the linear guide grooves in a penetrating mode, and one end of the transmission part is attached to the curve guide groove. The device is good in necking depth consistency, has a closed-loop detection function, is high in drawing force test passing rate, greatly improves the product stability, and meets the requirements of customers.

Description

Technical Field

[0001] This invention belongs to the field of mechanical automation assembly technology, and specifically relates to a rotary closing device. Background Technology

[0002] In the manufacturing of products such as electric struts, the ball joint finishing process at the moving end is a critical assembly step. Existing technologies typically employ pneumatic or simple mechanical finishing equipment, which presents the following problems: 1. The finishing depth depends on manual adjustment and equipment status, making it difficult to guarantee consistency for each product; 2. Lack of real-time and accurate detection and feedback on the finishing depth leads to large quality fluctuations; 3. The receiving tool is prone to wear and tear under frequent impacts, requiring periodic shutdowns for replacement, which affects production efficiency. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a rotary closing device that offers consistent closing depth, features closed-loop detection, and boasts a high pass rate in pull-out force tests, thereby significantly improving product stability and meeting customer needs.

[0004] To achieve the above objectives, the specific solution adopted by the present invention is as follows: A rotary closing device includes a drive unit, a slewing bearing, and a closing fixture. The output end of the drive unit is connected to the slewing bearing, and the drive unit drives the slewing bearing to rotate. A fixture mounting plate that rotates with the slewing bearing is provided on the slewing bearing. A curved guide groove is formed inside the fixture mounting plate. The closing fixture includes a limiting member and a transmission member. A plurality of straight guide grooves are distributed circumferentially on the limiting member. The transmission member is disposed through the straight guide grooves, and one end of the transmission member is in contact with the curved guide groove.

[0005] As a preferred embodiment, the drive unit includes a servo motor, a coupling, a worm gear, and a worm. The servo motor is axially connected to the worm via the coupling, and the circumferential teeth of the worm mesh with the outer ring teeth of the worm gear. A drive housing is provided outside the worm gear and the worm.

[0006] As a preferred embodiment, the drive housing is provided with a vertical mounting plate, and the vertical mounting plate is provided with a limit detection component. The limit detection component includes a detection mounting plate and a detection card. The detection mounting plate has a detection card slot, and one end of the detection card is engaged in the detection card slot. The slewing bearing is axially connected to the inner ring of the worm gear, and the slewing bearing is radially connected to the other end of the detection card.

[0007] As a preferred embodiment, the detection slot is arc-shaped, and a position sensor is provided at the end of the detection slot.

[0008] As a preferred embodiment, the tooling mounting plate is ring-shaped and is connected to the slewing bearing via a connecting shaft.

[0009] As a preferred embodiment, the number of transmission components is 6, and they are evenly distributed along the circumference of the limiting component.

[0010] As a preferred embodiment, the transmission component is provided with a connecting pin at one end near the curved guide groove, and a displacement sensor is connected to the connecting pin. The displacement sensor is fixed by a mounting base.

[0011] Based on the above technical solution, the working principle of the present invention is as follows: The drive unit drives the slewing bearing to rotate, which in turn drives the tooling mounting plate to rotate. The slewing bearing body is internally connected by a worm gear and worm shaft. The tooling mounting plate drives the closing tooling through a high-pair contact. The closing tooling reciprocates in a linear guide groove, converting rotary motion into linear motion. This achieves ball-and-socket closing at the moving end of the electric strut, with six points of linkage for precise closing. During the closing process, a connecting pin on the closing tooling is constantly connected to a displacement sensor. The displacement sensor monitors and accurately detects the closing depth in real time. After each closing is completed, the limit detection component returns to its initial position for monitoring. Two position sensors perform limit detection to prevent the slewing bearing from over-rotating, thus providing protection.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. High quality and good consistency of the finishing: The servo motor closed-loop control, combined with real-time feedback from a high-precision displacement sensor, achieves precise and stable control of the finishing depth, ensuring the consistency of the finishing depth of each product; 2. Significantly improved product qualification rate: Precise depth control ensures optimal deformation after the ball socket is closed, thereby greatly improving the pass rate of pull-out force test and the overall stability of the product, meeting the needs of high-end customers; 3. Reliable operation and protection functions: Power is transmitted through the slewing bearing with worm gear self-locking, ensuring smooth operation. The limit detection components can effectively prevent equipment damage due to overload or overtravel. 4. Efficiency and maintainability: The six-point linkage design allows for one-time molding, resulting in high efficiency. At the same time, the modular finishing tooling design facilitates quick replacement after wear, reducing maintenance costs and time. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Explanation of reference numerals in the attached drawings: 1. Drive unit; 11. Servo motor; 12. Coupling; 13. Drive housing; 2. Slewing bearing; 3. Closing fixture; 31. Limiting component; 32. Transmission component; 33. Linear guide groove; 34. Connecting pin; 35. Displacement sensor; 36. Mounting base; 4. Fixture mounting plate; 41. Curved guide groove; 5. Vertical mounting plate; 6. Limit detection assembly; 61. Detection mounting plate; 62. Detection clamp; 63. Detection slot; 64. Position sensor; 7. Electric strut product; 8. Wiring harness connector. Detailed Implementation

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The specific implementation methods of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1-2 As shown, the present invention provides a rotary closing device, including a drive unit 1, a rotary bearing 2, and a closing fixture 3. The output end of the drive unit 1 is connected to the rotary bearing 2, and the drive unit 1 drives the rotary bearing 2 to rotate. The rotary bearing 2 is provided with a fixture mounting plate 4 that rotates with the rotary bearing 2. The fixture mounting plate 4 has a curved guide groove 41 inside. The closing fixture 3 includes a limiting member 31 and a transmission member 32. The limiting member 31 has a plurality of straight guide grooves 33 distributed circumferentially. The transmission member 32 is disposed through the straight guide grooves 33, and one end of the transmission member 32 is in contact with the curved guide groove 41.

[0016] Specifically, the drive unit 1 drives the slewing bearing 2 to rotate, and at the same time, the tooling mounting plate 4 on the slewing bearing 2 rotates with the slewing bearing 2. At this time, under the curved action of the curved guide groove 41, the transmission component 32 performs a linear action in the linear guide groove 33 of the limiting component 31, thereby completing the conversion from rotational motion to linear motion. Several transmission components 32 move synchronously towards the center to form a closing action.

[0017] Preferably, the drive unit 1 includes a servo motor 11, a coupling 12, a worm gear (not shown in the figure), and a worm (not shown in the figure). The servo motor 11 is axially connected to the worm through the coupling 12. The circumferential teeth of the worm mesh with the outer ring teeth of the worm gear for transmission. A drive housing 13 is provided outside the worm gear and the worm.

[0018] Specifically, the drive unit 1 has a compact structure and high integration, which reduces the accumulation of errors and elastic deformation in the transmission chain, making the rotational positioning of the slewing bearing 2 very accurate, thereby achieving uniform closing.

[0019] More preferably, a vertical mounting plate 5 is provided on the drive housing 13, and a limit detection component 6 is provided on the vertical mounting plate 5. The limit detection component 6 includes a detection mounting plate 61 and a detection clip 62. A detection slot 63 is opened on the detection mounting plate 61, and one end of the detection clip 62 is engaged in the detection slot 63. The slewing bearing 2 is axially connected to the inner ring of the worm gear, and the slewing bearing 2 is radially connected to the other end of the detection clip 62.

[0020] Specifically, the slewing bearing 2 has a strong load-bearing capacity and can withstand the radial and axial forces generated during the closing process. At the same time, the limit detection component 6 can effectively prevent the slewing bearing 2 from over-rotating, thus playing a protective role.

[0021] More preferably, the detection slot 63 is arc-shaped, and a position sensor 64 is provided at the end of the detection slot 63.

[0022] Specifically, two position sensors 64 are used, one for monitoring the initial position, i.e., returning to the servo initial origin after each closing, and the other for monitoring the rotational limit position.

[0023] More preferably, the tooling mounting plate 4 is ring-shaped, and the tooling mounting plate 4 is connected to the slewing bearing 2 via a connecting shaft.

[0024] Specifically, the drive unit 1 drives the slewing bearing 2 to rotate, thereby driving the tooling mounting plate 4 to rotate synchronously.

[0025] More preferably, the number of transmission components 32 is 6, and they are evenly distributed along the circumference of the limiting component 31.

[0026] Specifically, the tooling mounting plate 4 drives the transmission component 32 through high-pair contact, so that the transmission component 32 makes linear reciprocating motion in the linear guide groove 33 of the limiting component 31. Six transmission components 32 are used to achieve precise closing through six-point linkage.

[0027] More preferably, the transmission component 32 is provided with a connecting pin 34 at one end near the curved guide groove 41, and the connecting pin 34 is connected to a displacement sensor 35.

[0028] Specifically, during the closing process, a connecting pin 34 is installed on the transmission component 32 and is constantly connected to the displacement sensor 35. The closing depth is monitored and accurately detected in real time by the displacement sensor 35, which is fixed by the mounting base 36.

[0029] In specific implementation, the present invention also includes a control system. The signal input terminal of the control system is electrically connected to the displacement sensor 35 and the position sensor 64, respectively, and its control output terminal is electrically connected to the servo motor 11, thereby forming a closed-loop control of the closing depth. When the present invention is applied to the electric strut product 7, the electric strut product 7 is set on the vertical mounting plate 5 and is equipped with a wiring harness connector 8 for connecting the control system. When the present invention is working, the drive unit 1 drives the slewing bearing 2 to rotate, the slewing bearing 2 drives the tooling mounting plate 4 to rotate, and the tooling mounting plate 4 drives the transmission component 32 of the closing tooling 3 through the high pair contact. The transmission component 32 reciprocates linearly in the linear guide groove 33 of the limiting component 31. The rotary motion is converted into linear motion to realize the ball socket closing of the moving end of the electric strut product 7. The six-point linkage realizes precise closing. During the closing process, the closing depth is monitored in real time and accurately detected by the displacement sensor 35. In actual operation, the displacement sensor 35 can be linked with one of the transmission components 32.

[0030] The above embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Although the invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of the invention do not depart from the spirit and scope of the invention and should be covered within the scope of the claims of the invention.

Claims

1. A rotary tuck device characterized by, The device includes a drive unit (1), a slewing bearing (2), and a closing fixture (3). The output end of the drive unit (1) is connected to the slewing bearing (2). The drive unit (1) drives the slewing bearing (2) to rotate. The slewing bearing (2) is provided with a fixture mounting plate (4) that rotates with the slewing bearing (2). The fixture mounting plate (4) has a curved guide groove (41) inside. The closing fixture (3) includes a limiting member (31) and a transmission member (32). The limiting member (31) has several straight guide grooves (33) distributed circumferentially. The transmission member (32) is disposed through the straight guide groove (33), and one end of the transmission member (32) is in contact with the curved guide groove (41).

2. A rotary closure device according to claim 1, wherein The drive unit (1) includes a servo motor (11), a coupling (12), a worm wheel and a worm. The servo motor (11) is axially connected to the worm through the coupling (12). The circumferential teeth of the worm mesh with the outer ring teeth of the worm wheel for transmission. A drive housing (13) is provided outside the worm wheel and the worm.

3. A rotary closure device according to claim 2, wherein A vertical mounting plate (5) is provided on the drive housing (13), and a limit detection component (6) is provided on the vertical mounting plate (5). The limit detection component (6) includes a detection mounting plate (61) and a detection card (62). A detection slot (63) is provided on the detection mounting plate (61), and one end of the detection card (62) is engaged in the detection slot (63). The slewing bearing (2) is axially connected to the inner ring of the worm gear, and the slewing bearing (2) is radially connected to the other end of the detection card (62).

4. A rotary closure device according to claim 3, wherein The detection slot (63) is arc-shaped, and a position sensor (64) is provided at the end of the detection slot (63).

5. A rotary closure device according to claim 1, wherein The tooling mounting plate (4) is ring-shaped and is connected to the slewing bearing (2) via a connecting shaft.

6. A rotary closure device according to claim 1, wherein The number of transmission components (32) is 6, and they are evenly distributed along the circumference of the limiting component (31).

7. A rotary closure device according to claim 1, wherein The transmission component (32) is provided with a connecting pin (34) at one end near the curved guide groove (41). The connecting pin (34) is connected to a displacement sensor (35), which is fixed by a mounting base (36).

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