Multi-section vibration assembling device for central bolt

Abstract

The utility model provides a central bolt multi-section vibration assembly device, which relates to the technical field of central bolt assembly lines and comprises a support, a lifting positioning mechanism, a vertical vibration mechanism, a clamping vibration mechanism and a detection judgment module. The lifting positioning mechanism is arranged on the support, the vertical vibration mechanism is connected to the lifting positioning mechanism, and the clamping vibration mechanism comprises a clamping part and a high-frequency vibration part; the clamping part is fixedly connected to the vertical vibration mechanism, and the high-frequency vibration part is fixedly connected to the clamping part; and the detection and judgment module is fixedly connected to the clamping part. The utility model has the advantages that the reject ratio in the assembly process is reduced, and the problems that the product is scratched and the assembly is failed and abnormal due to a smaller gap between the sleeve and the valve core and the assembly is failed and abnormal due to the fact that the valve core spring cannot correctly fall into the spring groove are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of central bolt assembly, in particular to a central bolt multi-stage vibration assembly device. Background Art

[0002] The central bolt is located in the timing system of the automobile engine. The opening and direction of the oil circuit are adjusted through the movement of the valve core, so that the engine can obtain better fuel performance. The existing central bolt includes a sleeve, a valve core, and a valve core spring. In the actual production process, in order to ensure that the internal leakage of the product is prevented, the installation gap between the sleeve and the valve core is small, which leads to extremely high requirements for the centering of the sleeve and the valve core when the sleeve valve core is assembled. When the existing equipment is installed, the sleeve and the valve core are directly assembled without accurately confirming the gap between the sleeve and the valve core, which often causes poor assembly centering, resulting in product scratches or assembly failure. In addition, the overall weight reduction of the central bolt should be taken into account during the design process. The valve core spring often uses a lightweight design, but the lightweight valve core spring design is not conducive to assembly. During the installation of the valve core spring, due to the lightness of the valve core spring, it is easy to cause the valve core spring to shift or shake during assembly, which often causes the valve core spring to press against the outside of the spring slot and cannot accurately fall into the spring slot, resulting in incorrect subsequent valve core installation height and position. Since the valve core position is not accurately confirmed during the installation process, the product assembly fails. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing central bolt assembly process often causes product scratches or product assembly failure. In order to overcome the defects of the above-mentioned prior art, the present invention provides a method that can detect and determine the installation position of the valve core and the valve core spring, and readjust the assembly position of the valve core and the valve core spring through multi-stage vibration, thereby reducing the scrap rate of the assembly process and eliminating the need for manual adjustment, thereby achieving the purpose of protecting personnel, saving time and effort, and improving the product qualification rate.

[0004] For the purpose of this utility model, the following technical solutions are adopted:

[0005] A multi-stage vibration assembly device for a central bolt comprises a bracket, a lifting and positioning mechanism, a vertical vibration mechanism, a clamping vibration mechanism and a detection and judgment module; the lifting and positioning mechanism is arranged on the bracket, the vertical vibration mechanism is connected to the lifting and positioning mechanism, and the lifting and positioning mechanism drives the vertical vibration mechanism to be lifted and positioned; the clamping vibration mechanism comprises a clamping part and a high-frequency vibration part; the clamping part is fixedly connected to the vertical vibration mechanism, and the clamping part is driven by the vertical vibration mechanism to perform vertical reciprocating lifting and lowering to achieve large-amplitude vibration, and the clamping part is used to clamp the central bolt; the high-frequency vibration part is fixedly connected to the clamping part; the vibration is transmitted to the clamping part through the high-frequency vibration part, and the central bolt on the clamping part is made to achieve high-frequency vibration; the detection and judgment module is fixedly connected to the clamping part, and the detection and judgment module is used to detect and judge whether the spring and valve core in the central bolt are installed in place. The device can conveniently clamp and fix the central bolt through the clamping part, and drive the central bolt to vibrate greatly through the vertical vibration mechanism to make the central bolt shake longitudinally, so that the valve core and the valve core spring shake freely and fall into the correct position, and at the same time transmit the high-frequency excitation to the inside of the central bolt through the high-frequency vibration part, so that the two are combined to realize a composite multi-stage vibration mode, which greatly improves the guiding effect, and then the spring and valve core inside the central bolt are inspected by the detection and judgment module to ensure that they are installed in place before subsequent processing, which ultimately reduces the defective rate in the assembly process, solves the problems of product scratches and assembly failures caused by the small gap between the sleeve and the valve core, and the problem of assembly failures caused by the inability of the valve core spring to fall correctly into the spring groove.

[0006] Preferably, the lifting and positioning mechanism comprises a positioning support plate, a lifting and positioning cylinder and a lifting and positioning plate; the positioning support plate is fixedly connected above the bracket, the cylinder body of the lifting and positioning cylinder is vertically arranged on the positioning support plate, the lifting and positioning plate is fixedly connected to the telescopic rod of the lifting and positioning cylinder, and the lifting and positioning plate is driven by the telescopic rod to be lifted and positioned. The lifting and positioning plate is driven by the lifting and positioning cylinder to be lifted and positioned, thereby further improving the accuracy of positioning the vertical vibration mechanism.

[0007] Preferably, the vertical vibration mechanism includes a vibration support plate, a vertical vibration cylinder and a vibration positioning plate; the vibration support plate is vertically arranged on the lifting positioning plate, the vertical vibration cylinder is vertically connected to the top of the vibration support plate through a cylinder connecting plate, and the telescopic rod of the vertical vibration cylinder passes through the cylinder connecting plate and is fixedly connected to the vibration positioning plate; the clamping part is fixedly connected to the bottom of the vibration positioning plate. The vertical vibration cylinder can drive the vibration positioning plate to perform a large-scale lifting and reciprocating motion, so that the valve core and the valve core spring in the central bolt can vibrate, so that both can fall into the specified position, thereby preventing subsequent assembly failure due to inaccurate positioning.

[0008] Preferably, the vibration positioning plate is L-shaped, and a vertical slide rail is connected between the vertical portion of the vibration positioning plate and the vibration support plate; a movable limit block is arranged on the side wall of the vertical portion of the vibration positioning plate; a limit column is arranged at the lower portion of the vibration support plate to limit the movable limit block; and the clamping portion is fixedly connected to the bottom of the horizontal portion of the vibration positioning plate. The L-shaped vibration positioning plate is convenient for sliding connection with the vibration positioning plate, and is also convenient for fixed cooperation with the clamping portion, thereby improving the degree of cooperation of the installation connection.

[0009] Preferably, the clamping part includes a clamping connection plate and a clamping claw cylinder; the clamping claw cylinder is fixedly connected to the bottom of the transverse part of the vibration positioning plate through the clamping connection plate, and the clamping connection plate and the vibration positioning plate are fixedly connected by a plurality of screws. The clamping connection plate is convenient for horizontally fixing the clamping claw cylinder, and the setting of the two clamping claws is convenient for clamping the central bolt, thereby improving the matching degree of the structure.

[0010] Preferably, a limit stopper is provided between the two clamping jaws on the clamping jaw cylinder to prevent over-clamping. The limit stopper can prevent the two clamping jaws from over-clamping and damaging the central bolt, thereby ensuring the integrity of the central bolt.

[0011] Preferably, the high-frequency vibration part is a high-frequency vibrator, which is fixedly connected to the clamping connection plate. The high-frequency vibration is transmitted to the inside of the central bolt by the high-frequency vibrator, and the guiding effect of the valve core and the valve core spring is greatly improved by a composite multi-stage vibration method.

[0012] Preferably, the detection and judgment module is a multi-point displacement sensor, which is arranged on the clamping connection plate, and the detection port of the multi-point displacement sensor faces the central bolt. The multi-point displacement sensor can detect the height of the valve core, so as to judge whether the valve core and the valve core spring are installed in place. If not, the valve core and the valve core spring in the central bolt are vibrated and corrected.

[0013] Preferably, it further comprises an assembly tray for carrying the central bolt, wherein the assembly tray is located below the clamping portion.

[0014] To sum up, the advantage of the utility model is that the device can conveniently clamp and fix the central bolt through the clamping part, and drive the central bolt to vibrate greatly through the vertical vibration mechanism to make the central bolt shake longitudinally, so that the valve core and the valve core spring shake freely and fall into the correct position, and at the same time transmit the high-frequency excitation to the inside of the central bolt through the high-frequency vibration part, so that the two are combined to realize a composite multi-stage vibration mode, which greatly improves the guiding effect, and then the spring and valve core inside the central bolt are inspected by the detection and judgment module to ensure that they are installed in place before subsequent processing, which ultimately reduces the defective rate in the assembly process, solves the problems of product scratches and assembly failures caused by the small gap between the sleeve and the valve core, and the problem of assembly failures caused by the inability of the valve core spring to fall correctly into the spring groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a central bolt multi-stage vibration assembly device of the utility model.

[0016] Figure 2 It is a structural schematic diagram of an assembly tray of the utility model.

[0017] Figure 3 It is a schematic structural diagram of the cylinder drive of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the clamping claw module of the utility model.

[0019] Description of reference numerals:

[0020] 1. Bracket; 2. Assembly tray; 21. Central bolt carrier; 211. Bolt placement groove; 212. Vertical limit plate; 213. Arc-shaped matching concave surface; 22. Spring carrier; 221. Spring placement groove; 23. Valve core carrier; 231. Valve core placement groove; 3. Lifting and positioning mechanism; 31. Positioning support plate; 32. Lifting and positioning cylinder; 33. Lifting and positioning plate; 4. Vertical vibration mechanism; 41. Vibration support plate; 42. Vertical vibration cylinder; 421. Cylinder connecting plate; 43. Vibration positioning plate; 431. Movable limit block; 432. Limit column; 44. Vertical slide rail; 5. Clamping and vibration mechanism; 51. Clamping part; 511. Clamping connection plate; 512. Clamping claw cylinder; 513. Limit block; 514. Clamping claw; 52. High-frequency vibration part; 6. Detection and judgment module. DETAILED DESCRIPTION

[0021] First, those skilled in the art should understand that these implementations are only used to explain the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can make adjustments to them as needed to adapt to specific application scenarios.

[0022] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0023] In the embodiments of the present application, unless otherwise clearly specified or limited, a first feature is "on" a second feature.

[0024] Or "below" can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 4As shown, a central bolt multi-stage vibration assembly device includes a bracket 1, an assembly tray 2, a lifting and positioning mechanism 3, a vertical vibration mechanism 4, a clamping vibration mechanism 5 and a detection and judgment module 6; the bracket 1 is a supporting vertical rod, and a central bolt carrier 21 is arranged in the middle of the assembly tray 2; the central bolt carrier 21 is provided with a bolt placement groove 211 for placing the central bolt and arranged vertically; the lifting and positioning mechanism 3 is arranged above the bracket 1, and the vertical vibration mechanism 4 is connected to the lifting and positioning mechanism 3, and the lifting and positioning mechanism 3 drives the vertical vibration mechanism 4 to be lifted and positioned; the clamping vibration mechanism 5 includes a clamping part 51 and a high frequency Vibration part 52; the clamping part 51 is fixedly connected to the vertical vibration mechanism 4 and is located above the assembly tray 2, and the clamping part 51 is driven by the vertical vibration mechanism 4 to perform vertical reciprocating lifting and lowering to achieve large-amplitude vibration, and the clamping part 51 is used to clamp the central bolt in the bolt placement groove 211; the high-frequency vibration part 52 is fixedly connected to the clamping part 51; the vibration is transmitted to the clamping part 51 through the high-frequency vibration part 52, and the central bolt on the clamping part 51 achieves high-frequency vibration; the detection and judgment module 6 is fixedly connected to the clamping part 51, and the detection and judgment module is used to detect and judge whether the spring and valve core in the central bolt are installed in place. The central bolt can be conveniently clamped and fixed by the clamping part 51, and the central bolt is driven to vibrate greatly by the vertical vibration mechanism 4 to make the central bolt shake longitudinally, so that the valve core and the valve core spring shake freely and fall into the correct position. At the same time, the high-frequency excitation is transmitted to the inside of the central bolt by the high-frequency vibration part 52, so that the two are combined to realize a composite multi-stage vibration mode, which greatly improves the guiding effect. The spring and valve core inside the central bolt are then inspected by the detection and judgment module 6 to ensure that they are installed in place before subsequent processing, which ultimately reduces the defective rate in the assembly process, solves the problems of product scratches and assembly failures caused by the small gap between the sleeve and the valve core, and the problem of assembly failures caused by the inability of the valve core spring to correctly fall into the spring groove.

[0027] like Figure 1 and Figure 2As shown, the bottom surface of the central bolt carrier 21 is symmetrically provided with vertical limiting plates 212 on both sides of the front and rear of the bolt placement groove 211; the inner wall of the vertical limiting plate 212 is provided with an arc-shaped matching concave surface 213 that matches the outer peripheral wall of the central bolt. The central bolt can be further limited by the vertical limiting plate 212, and the arc-shaped matching concave surface 213 facilitates better matching with the central bolt to ensure the vertical precise positioning of the central bolt. The assembly tray 2 is also provided with a spring carrier 22 and a valve core carrier 23 on both sides of the central bolt carrier 21; the spring carrier 22 is provided with a spring placement groove 221 for placing the valve core spring; the valve core carrier 23 is provided with a valve core placement groove 231 for placing the valve core; the groove centers of the spring placement groove 221, the valve core placement groove 231 and the bolt placement groove 211 are on the same straight line. The spring carrier 22 and the valve core carrier 23 facilitate assembly on the production line, greatly improving production efficiency. In addition, the centers of the spring mounting groove 221, the valve core mounting groove 231 and the bolt mounting groove 211 are on the same straight line, which facilitates linear transfer and ensures transfer accuracy.

[0028] like Figure 3 to Figure 4 As shown, the lifting and positioning mechanism 3 includes a positioning support plate 31, a lifting and positioning cylinder 32 and a lifting and positioning plate 33; the positioning support plate 31 is fixedly connected above the bracket 1 in a horizontal direction, the cylinder body of the lifting and positioning cylinder 32 is vertically arranged on the positioning support plate 31, and the lifting and positioning plate 33 is fixedly connected to the telescopic rod of the lifting and positioning cylinder 32, and the lifting and positioning plate 33 is driven by the telescopic rod to be lifted and positioned. The lifting and positioning plate 33 is driven by the lifting and positioning cylinder 32 to be lifted and positioned, so as to further improve the accuracy of positioning the vertical vibration mechanism 4.

[0029] like Figure 3 to Figure 4As shown, the vertical vibration mechanism 4 includes a vibration support plate 41, a vertical vibration cylinder 42 and a vibration positioning plate 43; the vibration support plate 41 is vertically arranged on the lifting positioning plate 33, the vertical vibration cylinder 42 is vertically connected to the top of the vibration support plate 41 through the cylinder connecting plate 421, and the cylinder connecting plate 421 is arranged in the horizontal direction, and the lower end of the telescopic rod of the vertical vibration cylinder 42 passes through the cylinder connecting plate 421 and is fixedly connected to the vibration positioning plate 43, so that the telescopic rod can be lifted and lowered in one step and limited and positioned to prevent position deviation during the lifting process. The clamping part 51 is fixedly connected to the bottom of the vibration positioning plate 43. The vertical vibration cylinder 42 can drive the vibration positioning plate 43 to perform a large-scale lifting and reciprocating motion, so that the valve core and the valve core spring in the central bolt can vibrate, so that both can fall into the specified position, thereby preventing subsequent assembly failure due to inaccurate positioning. The vibration positioning plate 43 is L-shaped, and a vertical slide rail 44 is connected between the vertical portion of the vibration positioning plate 43 and the vibration support plate 41. The vertical portion of the vibration positioning plate 43 is arranged parallel to the vibration support plate 41. A movable limit block 431 is arranged on the side wall of the vertical portion of the vibration positioning plate 43; a limit column 432 is arranged at the lower portion of the vibration support plate 41 to cooperate with the movable limit block 431 in vertical limiting; and the clamping portion 51 is fixedly connected to the bottom of the horizontal portion of the vibration positioning plate 43. The L-shaped vibration positioning plate 43 facilitates sliding connection with the vibration positioning plate 43, and also facilitates fixed cooperation with the clamping portion 51, thereby improving the degree of cooperation of the installation connection. At the same time, the movable limit block 431 cooperates with the limit column 432, which further facilitates vertical positioning and ensures that the central bolt can be accurately clamped.

[0030] like Figure 3 to Figure 4 As shown, the clamping part 51 includes a clamping connecting plate 511 and a clamping claw cylinder 512; the clamping claw cylinder 512 is fixedly connected to the bottom of the horizontal part of the vibration positioning plate 43 in a horizontal direction through the clamping connecting plate 511, and the clamping connecting plate 511 and the vibration positioning plate 43 are fixedly connected by a plurality of screws; the connection line of the two clamping claws of the clamping claw cylinder 512 is arranged perpendicular to the connection line of the two vertical limit plates 212. The clamping connecting plate 511 facilitates the horizontal fixing of the clamping claw cylinder 512, and the arrangement of the two clamping claws 514 facilitates the clamping of the central bolt, thereby improving the matching degree of the structure. A limit stopper 513 for preventing over-clamping is arranged between the two clamping claws 514 on the clamping claw cylinder 512. The limit stopper 513 can prevent the two clamping claws from over-clamping and damaging the central bolt, thereby ensuring the integrity of the central bolt.

[0031] like Figure 1As shown, the high-frequency vibration part 52 is a high-frequency vibrator, and the high-frequency vibrator is fixedly connected to the side wall of the clamping connection plate 511. The high-frequency vibration is transmitted to the inside of the central bolt by the high-frequency vibrator, and the guiding effect of the valve core and the valve core spring is greatly improved by the composite multi-stage vibration method. The detection and judgment module 6 is a multi-point displacement sensor vertically arranged on the clamping connection plate 511, and the detection port of the multi-point displacement sensor faces the assembly tray 2. During the specific installation, the multi-point displacement sensor is tilted and fine-tuned at a certain angle according to the location on site to ensure that the detection port of the multi-point displacement sensor can detect the height of the valve core. The height of the valve core can be detected by the multi-point displacement sensor to determine whether the valve core and the valve core spring are installed in place. If not installed in place, the valve core and the valve core spring in the central bolt are vibrated and guided into place.

[0032] When the device is working, during the assembly process of the central bolt, the automatic feeding system installs the valve core spring and the valve core into the sleeve. The device can be divided into two parts: a judgment module and a vibration module.

[0033] Judgment module: The semi-finished central bolt is transported to the bottom of the workstation where the device is located through the assembly tray 2, and the lifting and positioning cylinder 32 in the lifting and positioning mechanism 3 drives the multi-point displacement sensor to move to the specified detection height. The height of the valve core in the central bolt is detected by the multi-point displacement sensor. Through the detection, it is determined whether the spring and valve core in the central bolt are installed in place, and the judgment result of the multi-point displacement sensor is output to the PLC controller. If the judgment result passes, the assembly tray 2 is released and transferred to the next workstation; if the judgment result fails, the vibration module is executed.

[0034] Vibration module: The lifting and positioning cylinder 32 in the lifting and positioning mechanism 3 drives the clamping cylinder 512 to descend to the bolt placement groove 211 on the assembly tray 2, and the clamping cylinder 512 clamps the upper part of the central bolt, and then the lifting and positioning mechanism 3 rises to separate the central bolt from the central bolt carrier 21, and the vertical vibration cylinder 42 in the vertical vibration mechanism 4 is started, and the central bolt is driven to lift and shake back and forth longitudinally, so that the valve core and the valve core spring shake freely and fall into the correct position in the central bolt, and at the same time, the high-frequency vibrator is started to transmit the high-frequency excitation to the inside of the central bolt, and the vertical vibration mechanism 4 provides a large-amplitude vibration effect and cooperates with the high-frequency vibrator to provide high-frequency excitation. Finally, through a composite multi-stage vibration method, it can be ensured that the valve core and the valve core spring are accurately guided to the specified position to ensure that the valve core is at a specified height. The vibration time and the number of vibrations can be set according to the PLC according to the on-site situation.

[0035] After the vibration cycle is completed, the lifting and positioning mechanism 3 puts the central bolt back into the bolt placement groove 211. The device repeats the judgment module to further detect and ensure that the valve core is at the specified height. If the judgment result is passed, the assembly tray 2 is released and transferred to the next station.

[0036] The device can solve the problem of manual inspection and removal of improperly assembled products in the traditional production process, and the risk of sudden movement of equipment and safety risks. Now there is no need for manual inspection and the process is automated. The device can automatically determine and correct the assembly status of the product, and can protect personnel from dangerous working environments. At the same time, the displacement sensor is used to automatically determine the assembly status of the central bolt. If it is detected that the product assembly position is not good, the assembly status can be re-corrected, which reduces the scrap rate of the assembly process and solves the problem of product scratches and assembly failure caused by the small gap between the sleeve and the valve core during the assembly of the central bolt. It can also solve the problem of the valve core spring not being able to fall correctly into the spring groove during the assembly of the central bolt, and ultimately improve the output of qualified products on the automated assembly line.

[0037] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0038] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" etc. means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A central bolt multi-stage vibration assembly device, characterized in that: The invention comprises a support (1), a lifting and positioning mechanism (3), a vertical vibration mechanism (4), a clamping and vibration mechanism (5) and a detection and judgment module (6); the lifting and positioning mechanism (3) is arranged on the support (1); the vertical vibration mechanism (4) is connected to the lifting and positioning mechanism (3), and the lifting and positioning mechanism (3) drives the vertical vibration mechanism (4) to be lifted and positioned; the clamping and vibration mechanism (5) comprises a clamping part (51) and a high-frequency vibration part (52); the clamping part (51) is fixedly connected to the vertical vibration mechanism (4), and the vertical vibration mechanism (4) is connected to the lifting and positioning mechanism (3) to drive the vertical vibration mechanism (4) to be lifted and positioned; The vibration mechanism (4) drives the clamping part (51) to perform vertical reciprocating lifting and lowering to achieve large-amplitude vibration, and the clamping part (51) is used to clamp the central bolt; the high-frequency vibration part (52) is fixedly connected to the clamping part (51); the vibration is transmitted to the clamping part (51) through the high-frequency vibration part (52), and the central bolt on the clamping part (51) is made to achieve high-frequency vibration; the detection and judgment module (6) is fixedly connected to the clamping part (51), and the detection and judgment module is used to detect and judge whether the spring and the valve core in the central bolt are installed in place.

2. The central bolt multi-stage vibration assembly device according to claim 1, characterized in that: The lifting and positioning mechanism (3) comprises a positioning support plate (31), a lifting and positioning cylinder (32) and a lifting and positioning plate (33); the positioning support plate (31) is fixedly connected above the bracket (1); the cylinder body of the lifting and positioning cylinder (32) is vertically arranged on the positioning support plate (31); the lifting and positioning plate (33) is fixedly connected to the telescopic rod of the lifting and positioning cylinder (32), and the lifting and positioning plate (33) is driven by the telescopic rod to be lifted and positioned.

3. The central bolt multi-stage vibration assembly device according to claim 1, characterized in that: The vertical vibration mechanism (4) comprises a vibration support plate (41), a vertical vibration cylinder (42) and a vibration positioning plate (43); the vibration support plate (41) is vertically arranged on the lifting and positioning mechanism (3); the vertical vibration cylinder (42) is vertically connected to the top of the vibration support plate (41) through a cylinder connecting plate (421); the telescopic rod of the vertical vibration cylinder (42) passes through the cylinder connecting plate (421) and is fixedly connected to the vibration positioning plate (43); the clamping portion (51) is fixedly connected to the bottom of the vibration positioning plate (43).

4. The central bolt multi-stage vibration assembly device according to claim 3 is characterized in that: The vibration positioning plate (43) is L-shaped, and a vertical slide rail (44) is connected between the vertical portion of the vibration positioning plate (43) and the vibration support plate (41); a movable limit block (431) is provided on the side wall of the vertical portion of the vibration positioning plate (43); a limit column (432) that is limitedly matched with the movable limit block (431) is provided at the lower portion of the vibration support plate (41); and the clamping portion (51) is fixedly connected to the bottom of the horizontal portion of the vibration positioning plate (43).

5. The central bolt multi-stage vibration assembly device according to claim 4, characterized in that: The clamping portion (51) comprises a clamping connection plate (511) and a clamping claw cylinder (512); the clamping claw cylinder (512) is fixedly connected to the bottom of the transverse portion of the vibration positioning plate (43) in a horizontal direction via the clamping connection plate (511), and the clamping connection plate (511) and the vibration positioning plate (43) are fixedly connected via a plurality of screws.

6. The central bolt multi-stage vibration assembly device according to claim 5, characterized in that: A limit stopper (513) for preventing over-clamping is arranged between the two clamping jaws (514) on the clamping jaw cylinder (512).

7. The central bolt multi-stage vibration assembly device according to claim 1, characterized in that: The high-frequency vibration part (52) is a high-frequency vibrator, and the high-frequency vibrator is fixedly connected to the side wall of the clamping part (51).

8. The central bolt multi-stage vibration assembly device according to claim 1, characterized in that: The detection and judgment module (6) is a multi-point displacement sensor arranged vertically, and the detection port of the multi-point displacement sensor faces the central bolt.

9. The central bolt multi-stage vibration assembly device according to claim 1, characterized in that: It also comprises an assembly tray (2) for carrying the central bolt, wherein the assembly tray (2) is located below the clamping portion (51).

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