CN216607933U - Brake disc tightening device - Google Patents

Abstract

The utility model provides a brake disc screwing device which comprises an automatic feeding device, wherein a screw placing device is arranged on one side of the automatic feeding device, a workpiece placing device is arranged on one side of the screw placing device, a screw taking and placing device is arranged on the upper part of the screw placing device, the screw taking and placing device comprises a screwing gun, and the screwing gun comprises a plurality of independently rotating screwing gun heads; the screw taking and placing device is simple in structure and convenient to use, can finish the screwing processing of a workpiece at one time, cannot cause the situation that screws are not screwed or fall off, and cannot fall off when the number of screws is not correct, so that a worker can find the fallen screws by directly descending the screws, and the subsequent safety cannot be influenced; the installation structure is simple in structure and convenient to use, installation efficiency is improved, safety is improved, and follow-up safety accidents and other conditions are avoided.

Description

Brake disc tightening device

Technical Field

The application relates to the technical field of automobiles, in particular to a brake disc screwing device.

Background

Since the utility model, automobiles are gradually popularized and become a necessary travel tool for families; the brake disc is as the important part of car, the security of car will directly be influenced to the quality of its performance, add man-hour to car brake disc, need to screw up brake disc and car NHU (automobile wheel hub bearing) through the screw, among the prior art, generally adopt artificial mode to counterpoint screw and nut, then through the operation mode of pneumatic spanner or manual screw nut of screwing up, this kind of mode not only installation effectiveness is low, and this kind of installation mode still can lead to the condition that the screw leaks to twist or drop, when the screw drops to leaving the factory in the brake disc and installs, the incident appears easily.

Therefore, a new technical solution is needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brake disc screwing device which comprises an automatic feeding device, wherein a screw placing device is arranged on one side of the automatic feeding device, a workpiece placing device is arranged on one side of the screw placing device, a screw taking and placing device is arranged on the upper portion of the screw placing device, the screw taking and placing device comprises a screwing gun, and the screwing gun comprises a plurality of independently rotating screwing gun heads.

As a preferable scheme, the automatic feeding device comprises a hopper, a conveying device is arranged on one side of the hopper, a screw vertical placing part is arranged on one side of the conveying device, and a screw placing device is arranged on one side of the screw vertical placing part.

Preferably, the screw vertical placing part comprises a vertical trough, and a vibrator is arranged at the bottom of the vertical trough.

As a preferred scheme, the screw placing device comprises a rotary power source, the rotary power source is connected with a speed reducer, the speed reducer is connected with a rotating shaft, a fixed disc is arranged on the outer side of the rotating shaft, the fixed disc is connected with a fixed plate through a supporting rod, and the fixed plate is connected with the speed reducer; the fixed disk is hollow disk body, one side of fixed disk is equipped with the opening one that supplies the screw to place, the inside of fixed disk is provided with carousel one at the top of rotation axis, carousel one is last seted up a plurality ofly and opening one complex opening two, be equipped with carousel two on the carousel one, set up a plurality ofly and opening two complex opening three on the carousel two, be in between opening three and the opening two be equipped with the mount table on the carousel one, the lower surface and the mount table contact of the portion of twisting soon of screw.

As a preferred scheme, the screw placement device is further connected with a height adjusting device, the height adjusting device comprises a movable plate connected with a fixed plate, the movable plate is connected with a sliding block, the sliding block is matched with a sliding rail, the sliding rail is fixed on a mounting plate, a lifting power source is fixed to the other side of the mounting plate, and the lifting power source is connected with the movable plate through a first support.

Preferably, the slide rail is arranged obliquely.

As a preferred scheme, work piece placer includes the brake disc anchor clamps, the brake disc anchor clamps set up between the backup pad, the backup pad is connected with the support frame.

As a preferred scheme, it places on tightening the rifle support to tighten the rifle, it includes the link to tighten the rifle support, the link is connected with the regulating plate, be equipped with adjusting block on the regulating plate, adjusting block and regulation slide linkage, adjust the slide linkage and fix on the slide rail fixed plate, the slide rail fixed plate is connected with the fixed plate backup pad, the fixed plate backup pad is connected with the fixed bolster.

As a preferable scheme, the rear portion of the connecting frame is further connected with a buffering device, the buffering device comprises a positioning plate fixed on the connecting frame, a first supporting block and a second supporting block fixed on the slide rail fixing plate, a supporting rod is arranged between the first supporting block and the second supporting block, the supporting rod penetrates through a supporting hole piece connected to the positioning plate, and a spring is arranged between the supporting hole piece and the second supporting block.

As a preferable scheme, a guard plate is arranged at the top of the fixing support, the sliding plate is provided with screw holes, and the number of the screw holes corresponds to the number of the second openings and the third openings.

As a preferred scheme, full-material sensors are arranged on two sides of the vertical trough and connected with a control device.

As a preferred scheme, a sensor support is arranged on a mounting plate at the lower part of the slide rail fixing plate, a sensor for detecting whether the screw enters the first opening, the second opening and the third opening is mounted on the sensor support, and the sensor is connected with a control device.

As a preferred scheme, the automatic feeding device, the screw placing device and the screw taking and placing device are respectively connected with the control device.

In the application, an automobile NHU is placed on a brake disc as an integral workpiece, then the workpiece is placed on a brake disc clamp, an automatic feeding device supplies materials, a plurality of materials enter a screw placing device, the screw taking and placing device takes a plurality of screws at the same time, and then the plurality of screws are installed on the workpiece at the same time, so that the NHU and the brake disc are connected; the screw taking and placing device is simple in structure and convenient to use, can finish the screwing processing of a workpiece at one time, cannot cause the situation that screws are not screwed or fall off, and cannot fall off when the number of screws is not correct, so that a worker can find the fallen screws by directly descending the screws, and the subsequent safety cannot be influenced; the installation structure is simple in structure and convenient to use, installation efficiency is improved, safety is improved, and follow-up safety accidents and other conditions are avoided.

Drawings

FIG. 1 is a schematic structural view of angle one of the present application;

FIG. 2 is a schematic structural view of angle two of the present application;

FIG. 3 is a schematic view of angle one of the screw vertical placement portions of the present application;

FIG. 4 is a schematic view of the angle two of the screw vertical placement portion of the present application;

FIG. 5 is a schematic view of angle one of the screw placement device of the present application;

FIG. 6 is a schematic view of angle two of the screw placement device of the present application;

FIG. 7 is a schematic view of the structure of the holding pan of the present application;

FIG. 8 is a partial schematic structural view of FIG. 6 of the present application;

FIG. 9 is a schematic structural view of the tightening gun mount of the present application;

FIG. 10 is a schematic view of the structure of the claimed cushioning device;

FIG. 11 is a schematic view of the mounting structure of the sensor of the present application;

fig. 12 is a schematic view of the positional relationship between the screw placing device and the screw vertically placing portion of the present application;

reference numerals:

1. automatic feeding device 2, screw placing device 3 and workpiece placing device

4. Brake disc clamp 5, supporting plate 6, supporting frame 7 and screw taking and placing device

8. Tightening gun 9, tightening gun head 10, hopper 11 and conveying device

12. Vertical trough 13, screw 14, vibrator 15, base

16. Support 17, rotary power source 18, speed reducer 19, rotation axis

20. Fixed plate 21, support rod 22, fixing plate 23 and opening I

24. A first rotating disk 25, a second opening 26, a second rotating disk 27 and a third opening

28. Mounting table 29, screwing part 30, moving plate 31 and slide block

32. Slide rail 33, mounting plate 34, lifting power source 35 and support I

36. Connecting frame 37, adjusting plate 38, adjusting slide block 39 and adjusting slide rail

40. Slide rail fixing plate 41, fixing plate supporting plate 42, and fixing bracket

43. Positioning plate 44, first supporting block 45, second supporting block 46 and support rod

47. Spring 48, guard plate 49, full material sensor 50 and sensor support

51. Sensor 52, integral bracket 53, support hole piece 54, screw vertical placement portion.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be noted that the specific embodiments described herein are only for illustrating and explaining the present invention and are not to be construed as limiting the present invention.

The first embodiment is as follows:

the embodiment provides a brake disc screwing device which comprises an automatic feeding device 1, wherein the automatic feeding device 1 is used for automatically providing screws and screwing a brake disc, a screw placing device 2 is arranged on one side of the automatic feeding device 1, and the screws of the automatic feeding device 1 enter the screw placing device 2 to wait for use; the screw placing device 2 is provided with a workpiece placing device 3 at one side, the workpiece placing device 3 is used for placing NHU and a brake disc workpiece, and connection between the workpiece placing device and the brake disc workpiece is realized, preferably, the workpiece placing device 3 comprises a brake disc clamp 4, the brake disc clamp 4 is designed according to the shape and the size of a brake disc, and is not limited specifically, the brake disc holder 4 is arranged between the support plates 5, the brake disc holder 4 and the support plates 5 are fixed by well-known means such as screwing, bonding, welding, etc., or a transfer device may be arranged between the support plates 5, the brake disc clamp 4 and the brake disc can be conveyed to the next procedure after the screws are installed, the technical personnel can set the procedures according to the situation, the technical personnel do not make specific limitation, the supporting plate 5 is connected with the supporting frame 6, and the supporting plate 5 and the supporting frame 6 are fixed in a well-known mode such as screw connection, bonding, welding and the like; the upper part of the screw placing device 2 is provided with a screw taking and placing device 7, the screw taking and placing device 7 comprises a tightening gun 8, and the tightening gun 8 comprises a plurality of independently rotating tightening gun heads 9; screw is got and is put device 7 and is used for taking a plurality of screws in the screw placer 2, through screwing up the connection that NHU and brake disc work piece were realized to rifle 8, independent pivoted screws up rifle head 9 simultaneous working, connects the hole site of NHU and brake disc work piece simultaneously, the condition that the hourglass was twisted or dropped can not appear, when the discovery dropped, the staff can in time find the screw that drops, avoid follow-up work piece directly to be used for the car, cause the potential safety hazard.

Example two:

the automatic feeding device 1 is described in the present embodiment, specifically, the automatic feeding device 1 includes a hopper 10, the hopper 10 is a hopper in the prior art, and this application does not modify this, such as feeding by vibration, and will not be described in detail herein, one side of the hopper 10 is provided with a conveying device 11, the conveying device 11 adopts a belt conveyor line in the prior art, one side of the conveying device 11 is provided with a vertical placing portion for screws, one side of the vertical placing portion is provided with a screw placing device 2, the material in the hopper 10 is conveyed to a screw vertical placing portion 54 by the conveying device 11, that is, the screws are placed vertically, and are in a state to be used, the screws of the vertical placing portion are placed into the screw placing device 2, if the workpiece needs 4 screws to be screwed, 4 screws are placed in the screw placing device 2, if the workpiece needs 6 screws to be screwed, 6 screws are placed in the screw placing device 2, namely the number of the screws placed in the screw placing device 2 is limited according to the number of the workpieces, the number is not specifically limited in the application, and the screws are selected according to a specific production line; the hopper 10, the conveying device 11 and the screw vertical placing part 54 are all fixed on the integrated bracket 52.

Preferably, the screw vertical placing part 54 comprises a vertical trough 12, a vertical screw 13 is placed in the vertical trough 12, the width of the vertical trough 12 is equal to the diameter of the screw 13, a vibrator 14 is arranged at the bottom of the vertical trough 12, the vibrator 14 is a vibrator in the prior art, the specific model is not limited, the vibrator 14 is arranged on a base 15, the base 15 is connected with a support 16, and the support 16 is connected with the integral support 52; the base 15 is connected with the vibrator 14 and the support 16, the support 16 and the integral support 52 are fixed in a well-known fixing mode such as screw connection, bolt connection, support connection, bonding, welding and the like in the prior art, materials on the conveying device 11 enter the vertical trough 12, and the effect of overturning can be achieved through vibration of the vibrator 14, and screws can also be conveyed into the screw placing device 2.

Example three:

the present embodiment describes the screw placement device 2, specifically:

the screw placing device 2 comprises a rotary power source 17, the rotary power source 17 adopts a servo motor in the prior art, the specific model is not limited, technicians select the screw placing device according to specific conditions, the rotary power source 17 is connected with a speed reducer 18, the speed reducer 18 is connected with a rotating shaft 19, a fixed disc 20 is arranged on the outer side of the rotating shaft 19, the fixed disc 20 is connected with a fixed plate 22 through a support rod 21, the support rod 21 is fixed with the fixed disc 20 and the fixed plate 22 through well-known fixing modes such as screw connection, bolt connection, bracket connection, bonding and welding in the prior art, the fixed plate 22 is connected with the speed reducer 18, the fixed plate 22 is fixed with the speed reducer 18 through well-known fixing modes such as bonding, welding and screw connection, the fixed disc 20 is a hollow disc body, one side of the fixed disc 20 is provided with an opening I23 for placing the screw 13, a first rotating disc 24 is arranged at the top of the rotating shaft 19 in the fixed disc 20, a plurality of second openings 25 matched with the first openings 23 are formed in the first rotating disc 24, a second rotating disc 26 is arranged on the first rotating disc 24, a plurality of third openings 27 matched with the second openings 25 are formed in the second rotating disc 26, an installation table 28 is arranged between the third openings 27 and the second openings 25 on the first rotating disc 24, and the lower surface of a screwing part 29 of the screw 13 is in contact with the installation table 28; the rotating power source 17 drives the rotating shaft 19 to rotate, so that the first rotating disc 24 and the second rotating disc 26 are driven to rotate, when the first opening 23, the second opening 25 and the third opening 27 are overlapped, the screws 13 in the screw vertical placing portion 54 enter the first opening 23, the second opening 25 and the third opening 27, the first rotating disc 24 and the second rotating disc 26 continue to rotate, the second opening 25 and the third opening 27 drive the screws 13 to rotate, and when the next opening 23, the second opening 25 and the third opening 27 are overlapped, the working process is repeated until all the screws 13 are installed in the second opening 25 and the third opening 27; the number of the second opening 25 and the third opening 27 is adapted to the number of hole sites to be fixed on the brake disc, and technicians can select the openings according to specific conditions.

Example four:

the height of the screw placement device in this embodiment can be adjusted, specifically:

the screw placing device 2 is further connected with a height adjusting device, the height adjusting device comprises a moving plate 30 connected with a fixed plate 22, the fixed plate 22 and the moving plate 30 are fixed through well-known fixing modes such as screw connection, bolt connection, bracket connection, bonding and welding in the prior art, the moving plate 30 is connected with a sliding block 31, the sliding block 31 is matched with a sliding rail 32, the sliding rail 32 is fixed on a mounting plate 33, the mounting modes of the moving plate 30 and the sliding block 31 and the mounting modes of the sliding rail 32 and the mounting plate 33 are the prior art, such as screw connection, bonding and the like, the specific form is not limited, and technicians can select the height adjusting device according to specific conditions; a lifting power source 34 is fixed on the other side of the mounting plate 33, similarly, the mounting modes of the lifting power source 34 and the mounting plate 33 are also the prior art, such as screw connection, bonding and the like, the lifting power source 34 adopts a cylinder in the prior art, the specific model is not limited, such as MDNB40 series, and the lifting power source 34 is connected with the moving plate 30 through a first support 35; the first bracket 35 and the lifting power source 34, and the first bracket 35 and the moving plate 30 are connected by using well-known fixing methods such as screw connection, bonding and the like in the prior art; the lifting power source 34 is started to drive the slide block 31 on the moving plate 30 to move along the slide rail 32, that is, the screw placement device 2 is driven to move integrally, so as to adjust the height of the screw placement device 2.

Preferably, the slide rails 32 are arranged obliquely, so that not only the height but also a certain lateral distance can be adjusted.

Example five:

the tightening gun 8 is placed on a tightening gun support, the tightening gun support comprises a connecting frame 36, the tightening gun 8 is placed on the connecting frame 36, a worker can conveniently take and place the tightening gun, the connecting frame 36 is connected with an adjusting plate 37, the connecting frame 36 is connected with the adjusting plate 37 through well-known modes such as bonding, welding and threaded connection, an adjusting slide block 38 is arranged on the adjusting plate 37, the adjusting slide block 38 is matched with an adjusting slide rail 39, the adjusting slide block 38 and the adjusting slide rail 39 adopt an electric slide table linear module in the prior art, the specific model is not limited, and technicians can select the electric slide table linear module according to specific conditions; the adjusting slide rail 39 is fixed on a slide rail fixing plate 40, the slide rail fixing plate 40 is connected with a fixing plate supporting plate 41, and the fixing plate supporting plate 41 is connected with a fixing bracket 42.

The connection of the adjusting slider 38 and the adjusting plate 37, the adjusting slide 39 and the slide fixing plate 40, the connection of the slide fixing plate 40 and the fixing plate supporting plate 41, and the connection of the fixing plate supporting plate 41 and the fixing bracket 42 are all performed by the well-known methods in the prior art, such as adhesion, welding, and screw connection.

Preferably, the rear portion of the connecting frame 36 is further connected with a buffering device, the buffering device includes a positioning plate 43 fixed on the connecting frame 36, a first supporting block 44 and a second supporting block 45 fixed on the slide rail fixing plate 40, a supporting rod 46 is arranged between the first supporting block 44 and the second supporting block 45, the supporting rod 46 penetrates through a supporting hole member 53 connected on the positioning plate 43, the supporting hole member 53 and the top portion of the positioning plate 43 are fixed by well-known fixing methods such as screws, bonding, welding and the like, and a spring 47 is arranged between the supporting hole member 53 and the second supporting block 45; the positioning plate 43 and the connecting frame 36, the first support block 44 and the slide rail fixing plate 40, and the second support block 45 and the slide rail fixing plate 40 are connected by well-known methods in the prior art, such as bonding, welding, and screwing.

The adjusting slide block 38 moves along the adjusting slide rail 39 to drive the adjusting plate 37 and the connecting frame 36 to move up and down, so that the tightening gun 8 is driven to move up and down to grab the screw 13; when the adjusting slide block 38 moves downwards, the spring 47 is arranged, so that the tightening gun 8 can be buffered and reset.

Preferably, the fixing bracket 42 is provided with a guard plate 48 at the top, and the guard plate 48 is provided with screw holes, and the number of the screw holes corresponds to the number of the second openings 25 and the third openings 27.

Example six:

the sensor is arranged in the embodiment, so that the running accuracy of the equipment is improved:

full-material sensors 49 are arranged on two sides of the vertical trough 12, a straight line between the full-material sensors 49 indicates a working state of laser, and the working state does not belong to the characteristics of the full-material sensors 49; the full material sensor 49 is connected with the control device; the full-material sensor 49 adopts a laser sensor, and when the full-material sensor 49 detects that the end part of the screw vertical placing part 54 close to one side of the conveying device 11 is provided with materials, the full-material sensor proves that the materials in the vertical trough 12 are already fully placed, the speed of the conveying device 11 can be controlled to be reduced, or the vibration frequency of the vertical trough 12 is accelerated, so that the condition of material accumulation is prevented.

Preferably, a sensor bracket 50 is arranged on the mounting plate 33 at the lower part of the slide rail fixing plate 40, a sensor 51 for detecting whether a screw enters the first opening 23, the second opening 25 and the third opening 27 is mounted on the sensor bracket 50, and the sensor 51 is connected with a control device; the sensor 51 is a laser sensor in the prior art, and when the sensor 51 detects that materials are in the first opening 23, the second opening 25 and the third opening 27, it is proved that the screws 13 are placed in the first opening 23, the second opening 25 and the third opening 27, and the rotary power source 17 is controlled to start to place the next screw.

The control device can be a single chip microcomputer or a PLC controller in the prior art, the specific model is not particularly limited, and technicians can select the control device according to specific conditions; in order to improve the automation degree, the control device is also connected with an automatic feeding device 1, a screw placing device 2 and a screw taking and placing device 7.

More specifically, the control device is connected with the hopper 10, the conveying device 11 and the vibrator 14 at the bottom of the vertical trough 12 of the automatic feeding device 1, and the control device controls the start and stop of the vibrator 14 at the bottom of the hopper 10, the conveying device 11 and the vertical trough 12 and is used for inputting materials into the screw placing device 2; the control device is connected with the rotary power source 17 and the lifting power source 34 of the screw placing device 2, and the control device is used for controlling the starting and stopping of the lifting power source 34 and the rotary power source 17, adjusting the height of the screw placing device 2 and controlling the screws 13 to smoothly enter the fixed disc 20.

When the full material sensor 49 detects that the material is full, a signal is transmitted to the control device, the control device controls the conveying device 11 to stop or controls the conveying device 11 to slow down, the vibrator can also be controlled to improve the frequency of the vibrator and prevent the material from being accumulated, when the sensor 51 detects that the materials exist in the first opening 23, the second opening 25 and the third opening 27, the signal is transmitted to the control device, the control device controls the rotary power source 17 to start, the next second opening 25 and the third opening 27 are overlapped with the first opening 23, and the screws are continuously placed; the process can be controlled independently, and the work efficiency can be improved by using the controller.

The working principle of the application is as follows: place car NHU as holistic work piece on the brake disc earlier, then place the work piece on brake disc anchor clamps 4, automatic feed device 1 supplies, and on a plurality of materials entered into screw placer 2, a plurality of screws were taken simultaneously to screw get and put device 7, then installed a plurality of screws on the work piece simultaneously, realized NHU and brake disc's connection.

In conclusion, due to the adoption of the technical scheme, the screw taking and placing device is simple in structure and convenient to use, can finish the screwing processing of a workpiece at one time, cannot cause the situation that screws are not screwed or fall off, and cannot cause the falling situation when the number of screws is not correct, so that a worker can directly fall the fallen screws to find the screws, and the subsequent safety cannot be influenced; the installation structure is simple in structure and convenient to use, installation efficiency is improved, safety is improved, and follow-up safety accidents and other conditions are avoided.

Here, it is to be noted that the functions, algorithms, methods, etc. related to the present invention are only conventional adaptive applications of the prior art; therefore, the improvement of the prior art is essentially the connection relationship between hardware, but not the functions, algorithms and methods, that is, the utility model relates to one point of functions, algorithms and methods, but does not include the improvements proposed by the functions, algorithms and methods; the description of the present invention in terms of functions, algorithms and methods is provided for better understanding of the present invention.

The structures and connection relations which are not described in detail in the utility model are the prior art, and the utility model is not described in detail herein; the connection between the above-mentioned components is preferably fixed by means well known in the art, such as screws, bolts, adhesion, and welding and integral molding.

The preferred embodiments of the present application have been described in detail with reference to the accompanying drawings, however, the present application is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present application within the technical idea of the present application, and these simple modifications all belong to the protection scope of the present application.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present application will not be described separately.

In addition, any combination of the various embodiments of the present application can be made, and the present application should be considered as disclosed in the present application as long as the combination does not depart from the spirit of the present application.

Claims (9)

1. A brake disc screwing device comprises an automatic feeding device (1), a screw placing device (2) is arranged on one side of the automatic feeding device (1), a workpiece placing device (3) is arranged on one side of the screw placing device (2), a screw taking and placing device (7) is arranged on the upper portion of the screw placing device (2), the screw taking and placing device (7) comprises a screwing gun (8), the screwing gun (8) comprises a plurality of independently rotating screwing gun heads (9), the brake disc screwing device is characterized in that the screw placing device (2) comprises a rotary power source (17), the rotary power source (17) is connected with a speed reducer (18), the speed reducer (18) is connected with a rotating shaft (19), a fixed disc (20) is arranged on the outer side of the rotating shaft (19), and the fixed disc (20) is connected with a fixed plate (22) through a supporting rod (21), the fixing plate (22) is connected with the speed reducer (18); fixed disk (20) are hollow disk body, one side of fixed disk (20) is equipped with opening one (23) that supply screw (13) to place, the inside of fixed disk (20) is provided with carousel one (24) at the top of rotation axis (19), set up a plurality ofly on carousel one (24) and opening one (23) complex opening two (25), be equipped with carousel two (26) on carousel one (24), set up on carousel two (26) with opening two (25) complex opening three (27), the quantity of opening three (27) equals with the quantity of opening two (25), be in between opening three (27) and the opening two (25) be equipped with mount table (28) on carousel one (24), the lower surface and the mount table (28) contact of the portion of twisting (29) of screw (13).

2. Brake disc tightening device according to claim 1, characterized in that the automatic feed device (1) comprises a hopper (10), one side of the hopper (10) is provided with a conveyor (11), one side of the conveyor (11) is provided with a screw vertical placement portion (54), and one side of the screw vertical placement portion (54) is provided with a screw placement device (2).

3. Brake disc tightening device according to claim 2, characterized in that the screw vertical placement (54) comprises a vertical channel (12), the bottom of the vertical channel (12) being provided with a vibrator (14).

4. The brake disc tightening device according to claim 1, wherein the screw placement device (2) is further connected with a height adjustment device, the height adjustment device comprises a moving plate (30) connected with a fixed plate (22), the moving plate (30) is connected with a slider (31), the slider (31) is matched with a slide rail (32), the slide rail (32) is fixed on a mounting plate (33), a lifting power source (34) is fixed on one side of the mounting plate (33), and the lifting power source (34) is connected with the moving plate (30) through a first bracket (35).

5. The brake disc tightening device according to claim 1, wherein the tightening gun (8) is placed on a tightening gun support, the tightening gun support comprises a connecting frame (36), the connecting frame (36) is connected with an adjusting plate (37), an adjusting slide block (38) is arranged on the adjusting plate (37), the adjusting slide block (38) is connected with an adjusting slide rail (39), the adjusting slide rail (39) is fixed on a slide rail fixing plate (40), the slide rail fixing plate (40) is connected with a fixing plate supporting plate (41), and the fixing plate supporting plate (41) is connected with a fixing support (42).

6. The brake disc tightening device according to claim 5, wherein a buffer device is further connected to the rear portion of the connecting frame (36), the buffer device comprises a positioning plate (43) fixed on the connecting frame (36), a first supporting block (44) and a second supporting block (45) fixed on the slide rail fixing plate (40), a supporting rod (46) is arranged between the first supporting block (44) and the second supporting block (45), the supporting rod (46) penetrates through a supporting hole member (53) connected to the positioning plate (43), and a spring (47) is arranged between the supporting hole member (53) and the second supporting block (45).

7. Brake disc tightening device according to claim 3, characterized in that the vertical channel (12) is provided with a full level sensor (49) on both sides, said full level sensor (49) being connected to the control device.

8. The brake disc tightening device according to claim 6, wherein the mounting plate (33) at the lower portion of the slide rail fixing plate (40) is provided with a sensor bracket (50), the sensor bracket (50) is provided with a sensor (51) for detecting whether the screw (13) enters the first opening (23), the second opening (25) and the third opening (27), and the sensor (51) is connected with the control device.

9. Brake disc tightening device according to any of claims 1 to 8, characterized in that the automatic feeding device (1), the screw placement device (2) and the screw pick-and-place device (7) are each connected to a control device.

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