CN220592189U - Automatic screwing device - Google Patents

Abstract

The utility model provides an automatic tightening device, which relates to the technical field of automatic tightening devices and comprises a clamping assembly, a conveying assembly, a centering assembly and a tightening assembly; the conveying assembly comprises a storage area, a discharging area and a driving part, wherein the storage area is used for placing a workpiece to be conveyed, and the driving part is used for driving the workpiece to be conveyed to move from the storage area to the discharging area; the centering assembly comprises two telescopic components, the two telescopic components are arranged in a crossing way, and the two telescopic components are used for fixing a workpiece to be installed; the tightening assembly is telescopically arranged at the bottom of the centering assembly, the tightening assembly comprises a placing end, the placing end can be used for being abutted with a workpiece to be installed, and the clamping assembly is used for conveying the workpiece to be conveyed in the storage area to the placing end; the clamping component is arranged between the transportation component and the tightening component; the automatic tightening device has the advantages of reducing the workload of operators and improving the working efficiency of the operators.

Description

Automatic screwing device

Technical Field

The utility model relates to the technical field of automatic tightening devices, in particular to an automatic tightening device.

Background

The sunroof is installed in the roof, can make the interior air circulation of car effectively, increases the entering of fresh air, and the sunroof also can open the field of vision and remove the shooting demand of photographic shooting simultaneously.

In order to fix the automobile skylight, the automobile skylight is required to be fixed through the locating pins, and the locating pins are installed manually through a plurality of handheld tools in the prior art, but because the current basic transportation adopts a line transportation mode, the manual labor intensity is greatly increased in order to ensure that the energy efficiency is kept up with the line transportation speed.

Therefore, it is necessary to provide an automatic tightening device to solve the above technical problems.

Disclosure of Invention

The utility model mainly aims to provide an automatic tightening device, which aims to solve the technical problems of high labor intensity and low efficiency in the installation of a sunroof locating pin in the prior art.

In order to achieve the above object, the present utility model provides an automatic tightening apparatus including:

a clamping assembly;

the conveying assembly comprises a storage area, a discharge area and a driving part, wherein the storage area is used for placing a workpiece to be conveyed, and the driving part is used for driving the workpiece to be conveyed to move from the storage area to the discharge area;

the centering assembly comprises two telescopic components, the two telescopic components are arranged in a crossing mode, and the two telescopic components are used for fixing a workpiece to be installed;

the tightening assembly is telescopically arranged at the bottom of the centering assembly, the tightening assembly comprises a placing end, the clamping assembly is used for conveying the workpiece to be conveyed in the storage area to the placing end, and the placing end can be connected with the workpiece to be conveyed and the workpiece to be installed;

the clamping assembly is arranged between the conveying assembly and the tightening assembly.

In an embodiment, the transportation assembly further comprises a vertical plate and two blocking plates arranged on the vertical plate, the driving part comprises a sleeve and a rotating motor, the vertical plate is provided with a rotating hole, the rotating motor is installed on one side, deviating from the blocking plate, of the vertical plate, an output shaft of the rotating motor stretches out of the rotating hole, the sleeve is sleeved on the output shaft, the two blocking plates are all abutted to the outer wall of the sleeve and form the material storage area, a first groove is formed in the sleeve and used for storing a workpiece to be transported, and the rotating motor can drive the sleeve to rotate so as to enable the workpiece to be transported in the first groove to pass through the blocking plate and be transported to the material discharge area.

In an embodiment, the number of the first grooves is plural, and the plurality of first grooves are uniformly distributed on the outer wall of the sleeve.

In an embodiment, the driving part further comprises a linear guide rail and a rodless cylinder, the transportation assembly further comprises a mounting table, the rodless cylinder is mounted on the mounting table, the linear guide rail is mounted on the moving part of the rodless cylinder, the linear guide rail is arranged at the bottom of the sleeve, and the discharging area is arranged on the linear guide rail.

In an embodiment, the linear guide rail is provided with a second groove, and the second groove is used for storing the workpiece to be transported, which is transported to the discharging area by the sleeve.

In an embodiment, the transportation assembly further comprises a fixing frame and a pressing plate, a first telescopic cylinder is arranged in the fixing frame, the pressing plate is connected with an extending shaft of the first telescopic cylinder, and the first telescopic cylinder can drive the pressing plate to be close to or far away from the storage area.

In an embodiment, the clamping assembly comprises a mounting seat, a clamping cylinder and a clamping jaw, wherein the clamping cylinder is mounted on the mounting seat, the clamping cylinder is provided with a sliding groove, the clamping jaw comprises a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion are both slidably mounted on the sliding groove, and the clamping cylinder can drive the first clamping portion and the second clamping portion to be close to each other or far away from each other.

In an embodiment, the telescopic part includes fixed plate, power motor, gear and two centering dead levers, centering dead lever is provided with rack and a plurality of centering installation position, and is a plurality of centering installation position all is used for installing wait to install the work piece, the fixed plate is provided with the through-hole, power motor install in the fixed plate, power motor's output shaft stretches out the through-hole, the gear install in the output shaft, two the rack all in gear drive connects, and two the rack can be followed opposite direction respectively and removed.

In an embodiment, screw up the subassembly and include the base and screw up the part, the fixed plate install in the top of base, the side of base still is provided with the track that the level set up, screw up the part and including screwing up rifle, backplate and the flexible cylinder of second, the extension shaft of the flexible cylinder of second with screw up the rifle and be connected, the backplate is provided with the slider, slider slidable mounting in the track.

In an embodiment, the placing end is disposed at the top of the tightening gun, the placing end is a circular hole, and the size of the circular hole is larger than that of the workpiece to be transported.

In the scheme, the automatic tightening device comprises a clamping component, a conveying component, a centering component and a tightening component; the conveying assembly comprises a storage area, a discharging area and a driving part, wherein the storage area is used for placing a workpiece to be conveyed, and the driving part is used for driving the workpiece to be conveyed to move from the storage area to the discharging area; the centering assembly comprises two telescopic components, the two telescopic components are arranged in a crossing way, and the two telescopic components are used for fixing a workpiece to be installed; the tightening assembly is telescopically arranged at the bottom of the centering assembly, the tightening assembly comprises a placing end, the clamping assembly is used for conveying a workpiece to be conveyed in the storage area to the placing end, and the placing end can be connected with the workpiece to be conveyed and the workpiece to be installed; the clamping component is arranged between the transportation component and the tightening component; specifically, two telescopic components are adjusted to a proper size, then a workpiece to be installed is installed on the two telescopic components, an operator places the workpiece to be transported in a storage area, then a driving component transports the workpiece to be transported to a discharge area, a clamping component clamps the workpiece to be transported in the discharge area, then the workpiece to be transported is moved to a placing end, the clamping component returns to the original position to continuously clamp the workpiece to be transported, a tightening component installs the workpiece to be transported on the workpiece to be installed, then the workpiece to be installed after the installation is completed is taken down, a new workpiece to be installed is continuously placed on the two telescopic components, and the steps are repeated; according to the mode, the workpiece to be transported is not required to be installed on the workpiece to be installed manually, and only an operator is required to place the workpiece to be transported in the storage area, so that the workload of the operator is reduced, and meanwhile, the operation efficiency of the operator is greatly improved compared with manual installation.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings may be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of an automatic tightening device according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a clamping assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a portion of a clamping assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a transport assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a driving unit according to an embodiment of the present utility model;

FIG. 6 is a schematic view of a telescopic member according to an embodiment of the present utility model;

FIG. 7 is a schematic illustration of the connection of a centering assembly and a tightening assembly according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of a tightening unit according to an embodiment of the present utility model;

fig. 9 is a schematic view of a tightening gun according to an embodiment of the present utility model.

Reference numerals illustrate:

the achievement of the object, functional features and advantages of the present utility model will be further described with reference to the drawings in connection with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the workpieces in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is correspondingly changed.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present utility model.

Referring to fig. 1 to 9, in order to achieve the above object, the present utility model provides an automatic tightening apparatus 300, the automatic tightening apparatus 300 including a gripping assembly 1, a transport assembly 2, a centering assembly 3, and a tightening assembly 4; the conveying assembly 2 comprises a storage area 21, a discharge area 22 and a driving part 23, wherein the storage area 21 is used for placing the workpiece 100 to be conveyed, and the driving part 23 is used for driving the workpiece 100 to be conveyed to move from the storage area 21 to the discharge area 22; the centering assembly 3 comprises two telescopic components 31, the two telescopic components 31 are arranged in a crossing way, and the two telescopic components 31 are used for fixing the workpiece 200 to be installed; the tightening assembly 4 is telescopically arranged at the bottom of the centering assembly 3, the tightening assembly 4 comprises a placing end 43, the clamping assembly 1 is used for conveying the workpiece 100 to be conveyed in the storage area 21 to the placing end 43, and the placing end 43 can be connected with the workpiece 100 to be conveyed and the workpiece 200 to be installed; the clamping assembly 1 is arranged between the transport assembly 2 and the tightening assembly 4.

Specifically, the operator places the workpiece 100 to be transported in the storage area 21, then the driving component 23 transports the workpiece 100 to be transported to the discharging area 22, the clamping component 1 clamps the workpiece 100 to be transported in the discharging area 22, then moves the workpiece 100 to be transported to the placing end 43, the clamping component 1 returns to the original position to continuously clamp the workpiece 100 to be transported, then waits for the two telescopic components 31 to be adjusted to the proper size, then installs the workpiece 200 to be installed on the two telescopic components 31, the tightening component 4 installs the workpiece 100 to be transported on the workpiece 200 to be installed, then removes the installed workpiece 200, and continuously places a new workpiece 200 to be installed on the two telescopic components 31, and the steps are repeated; in this way, the workpiece 100 to be transported is not required to be installed on the workpiece 200 to be installed manually, and only the operator is required to place the workpiece 100 to be transported in the storage area 21, so that the workload of the operator is reduced, and meanwhile, the operation efficiency of the operator is greatly improved compared with the manual installation.

Further, the number of the transporting assembly 2 and the clamping assembly 1 is two, wherein the workpiece 100 to be transported is a locating pin, and the workpiece 200 to be installed is an automobile skylight.

For example, an operator can put 200 positioning pins into the storage areas 21 of two different conveying assemblies 2 at a time by hands, and the driving parts 23 in the conveying assemblies 2 drive the positioning pins to move so as to convey the positioning pins to the discharging areas 22; the clamping component 1 executes corresponding taking/placing instructions, and takes out the locating pin from the discharging area 22 and places the locating pin on the placing end 43; the sunroof is placed on the centering assembly 3, the centering assembly 3 automatically performs positioning along the length direction of the two telescopic components 31, and after the positioning is completed, the tightening assembly 4 tightens the positioning pin on the sunroof.

Further, each component is provided with a detection device, the automatic tightening device 300 further comprises a controller, the clamping component 1, the conveying component 2, the centering component 3, the tightening component 4 and the plurality of detection devices are connected with each other through signals, an execution instruction is set in the controller, the detection devices are used for detecting whether the conveying is in place, and each detection device feeds information back to the controller; the controller judges through feedback information, judges whether the current command is executed or whether each component is normal or not through preset conditions, and judges whether each component has interference or not at the same time: when each component is normal, the command can be continuously executed; when each component is abnormal, the automatic tightening device 300 automatically stops and alarms immediately, and after the alarms are released, the current command is continuously executed; when the current command is completed, the next command for executing the current command can be executed; when the current command is not executed, the command is continued to be executed. When the upper limit of the circulation time set by the command is exceeded, the device should automatically stop and alarm, and after the alarm is released, the current command is continuously executed.

The step of executing the instruction includes: the clamping assembly 1 moves to the discharging area 22 to take the workpiece 100 to be transported; the clamping assembly 1 places the workpiece 100 to be transported at the placing end 43; the clamping assembly 1 returns to the initial position; waiting for the centering assembly 3 to finish centering; the tightening assembly 4 extends out to tighten the workpiece 100 to be transported on the workpiece 200 to be installed; the transport assembly 2 transports the workpiece 100 to be transported from the storage area 21 to the discharge area 22; the above steps are repeated subsequently.

Referring to fig. 4 and 5, in an embodiment, the transporting assembly 2 further includes a riser 24 and two blocking plates 25 disposed on the riser 24, the driving part 23 includes a sleeve 231 and a rotating motor, the riser 24 is provided with a rotating hole, the rotating motor is mounted on a side of the riser 24 facing away from the blocking plates 25, an output shaft of the rotating motor extends out of the rotating hole, the sleeve 231 is sleeved on the output shaft, the two blocking plates 25 are abutted with an outer wall of the sleeve 231 and form a storage area 21, a first groove 231a is disposed on the sleeve 231, the first groove 231a is used for storing a workpiece 100 to be transported, and the rotating motor can rotate the sleeve 231 to enable the workpiece 100 to be transported in the first groove 231a to pass through the blocking plates 25 and transport the workpiece to the discharge area 22; specifically, the worker places the workpiece 100 to be transported in the storage area 21, places the workpiece 100 to be transported to drop due to the action of the blocking plate 25, one of the workpieces 100 to be transported enters the first groove 231a, then drives the rotating motor to rotate, the workpiece 100 to be transported in the storage area 21 is blocked by the blocking plate 25 and cannot pass through the blocking plate 25, and the workpiece 100 to be transported in the first groove 231a can pass through the blocking plate 25 and then drop to the discharging area 22 for clamping by the follow-up clamping assembly 1. By means of the structure, only one workpiece 100 to be transported can enter the discharging area 22 at a time, and excessive workpieces 100 to be transported are placed in the discharging area 22 to influence the work of the clamping assembly 1.

Referring to fig. 4 and 5, in an embodiment, the number of the first grooves 231a is plural, and the first grooves 231a are uniformly distributed on the outer wall of the sleeve 231; through setting up a plurality of first recesses 231a such rotation motor and can transport a plurality of work pieces 100 that wait to transport to the ejection of compact region 22 when rotating a week, can reduce the latency of clamping subassembly 1 like this and improve the efficiency of operation, can also reduce running cost simultaneously.

Referring to fig. 4 and 5, in an embodiment, the driving part 23 further includes a linear guide 232 and a rodless cylinder 233, the transport assembly 2 further includes a mounting table 26, the rodless cylinder 233 is mounted on the mounting table 26, the linear guide 232 is mounted on a moving part of the rodless cylinder 233, the linear guide 232 is disposed at the bottom of the sleeve 231, and the discharging area 22 is disposed on the linear guide 232; after the workpiece 100 to be transported is transported to the discharging area 22 by the rotating motor, the rodless cylinder 233 is started, the moving parts on the rodless cylinder 233 extend out along the length direction of the linear guide rail 232, the clamping assembly 1 clamps the workpiece 100 to be transported, after the clamping is completed, the moving parts on the rodless cylinder 233 retract to the bottom of the rotating motor, and the workpiece 100 to be transported by the rotating motor is continuously received.

Further, the rotating motor may be a rotating servo motor, which has a high-precision rotating position control function, so as to ensure that the workpieces 100 to be transported are precisely sorted into the first grooves 231 a.

Referring to fig. 4 and 5, in an embodiment, the linear guide 232 is provided with a second groove 232a, and the second groove 232a is used for storing the workpiece 100 to be transported, which is transported from the sleeve 231 to the discharging area 22; the workpiece 100 to be transported, which is transported to the discharging area 22 by the rotating motor, can be fixed by arranging the second groove 232a, so that the workpiece 100 to be transported is prevented from sliding in the discharging area 22, and the workpiece 100 to be transported is prevented from falling to affect the clamping of the clamping assembly 1.

Further, a laser sensor 232b is further disposed on the linear guide rail 232, the laser sensor 232b is in signal connection with the rodless cylinder 233, when the workpiece 100 to be transported is transported to the position of the laser sensor 232b, the laser sensor 232b senses the workpiece 100 to be transported, the laser sensor 232b sends out a signal, the rodless cylinder 233 receives the signal and stops moving, after the clamping component 1 clamps the workpiece 100 to be transported, the laser sensor 232b sends out a signal again, and the rodless cylinder 233 receives the signal and controls the moving component to move towards the direction of the rotating motor to continuously receive the workpiece 100 to be transported by the rotating motor.

Further, the workpiece 100 to be transported is a positioning pin, an induction component is arranged in the second groove 232a, the induction component has the functions of detecting the forward and reverse placement of the positioning pin, and when the positioning pin is placed reversely, the induction component can give an alarm for reminding;

referring to fig. 4 and 5, in an embodiment, the transport assembly 2 further includes a fixing frame 27 and a pressing plate 271, a first telescopic cylinder 272 is disposed in the fixing frame 27, the pressing plate 271 is connected with an extension shaft of the first telescopic cylinder 272, and the first telescopic cylinder 272 can drive the pressing plate 271 to be close to or far from the storage area 21; after all the workpieces 100 to be transported enter the storage area 21, in order to prevent the workpieces 100 to be transported from falling into the first grooves 231a, the first telescopic cylinders 272 retract, the pressing plates 271 are driven to move towards the storage area 21, the pressing plates 271 are abutted with the workpieces 100 to be transported to press the workpieces 100 to be transported into the first grooves 231a, the workpieces 100 to be transported are guaranteed to have enough downward pressure, and the workpieces 100 to be transported are prevented from being blocked abnormally.

Referring to fig. 2 and 3, in an embodiment, the gripping assembly 1 includes a mounting seat 11, a clamping cylinder 12 and a clamping jaw 13, the clamping cylinder 12 is mounted on the mounting seat 11, the clamping cylinder 12 is provided with a chute 121, the clamping jaw 13 includes a first clamping portion 131 and a second clamping portion 132, the first clamping portion 131 and the second clamping portion 132 are slidably mounted on the chute 121, and the clamping cylinder 12 can drive the first clamping portion 131 and the second clamping portion 132 to approach each other or to separate from each other; after the clamping assembly 1 approaches the workpiece 100 to be transported, the clamping cylinder 12 controls the first clamping part 131 and the second clamping part 132 to be away from each other, then the first clamping part 131 and the second clamping part 132 are moved to enable the workpiece 100 to be transported to be located between the first clamping part 131 and the second clamping part 132, then the clamping cylinder 12 controls the first clamping part 131 and the second clamping part 132 to move close to each other, the workpiece 100 to be transported is clamped, then the clamping assembly 1 transports the workpiece 100 to be transported to the placing end 43, and the workpiece 100 to be transported in the transportation process can be prevented from falling through the arrangement of the structure.

Further, the number of the clamping assemblies 1 can be multiple, and the workpieces 100 to be transported can be clamped, so that the operation efficiency is improved; meanwhile, a plurality of clamping jaws 13 can be arranged, so that the operation efficiency is further improved.

Referring to fig. 6, in an embodiment, the telescopic member 31 includes a fixed plate 32, a power motor, a gear 33, and two centering fixing rods 34, the centering fixing rods 34 are provided with racks 341 and a plurality of centering installation positions 342, the plurality of centering installation positions 342 are used for installing the workpiece 200 to be installed, the fixed plate 32 is provided with a through hole, the power motor is installed on the fixed plate 32, an output shaft of the power motor extends out of the through hole, the gear 33 is installed on the output shaft, the two racks 341 are in driving connection with the gear 33, and the two racks 341 can respectively move in opposite directions; specifically, when the centering is started, the power motor drives the gear 33 to rotate, and the two racks 341 relatively move, so that the centering installation positions 342 can be aligned with the installation positions of the tool to be installed to complete centering, and centering positioning in two different directions can be achieved through the vertical staggered arrangement of the two telescopic components 31.

Further, the range of centering positioning accuracy in the X direction and the Y direction is + -2 mm.

Referring to fig. 8 and 9, in an embodiment, the tightening assembly 4 includes a base 41 and a tightening member 42, the fixing plate 32 is mounted on the top of the base 41, a horizontally disposed rail 411 is further disposed on a side surface of the base 41, the tightening member 42 includes a tightening gun 421, a back plate 422 and a second telescopic cylinder 423, an extension shaft of the second telescopic cylinder 423 is connected with the tightening gun 421, the back plate 422 is provided with a slider, and the slider is slidably mounted on the rail 411; specifically, the slide block slides along the track 411 to enable the position of the tightening assembly 4 to be aligned with the installation position of the workpiece 200 to be installed, then the second telescopic cylinder 423 is started, the extending shaft of the second telescopic cylinder 423 extends to drive the tightening gun 421 to move towards the workpiece 200 to be installed, the workpiece 100 to be transported is installed on the workpiece 200 to be installed, the extending shaft of the second telescopic cylinder 423 retracts after the operation is completed, and the tightening gun 421 returns to the initial position;

further, the base 41 is further provided with a limiting plate 5, and the limiting plate 5 can block the back plate 422 from moving and further block the tightening part 42 from continuing to move, so that the sliding block is prevented from falling after the sliding block moves beyond the limit, and the tightening part 42 is prevented from being damaged. The tightening gun 421 prevents the work 100 to be transported from being deviated by torsion and angle control.

Referring to fig. 8 and 9, in one embodiment, the placement end 43 is disposed at the top of the tightening gun 421, the placement end 43 is a circular hole, and the size of the circular hole is larger than the size of the workpiece 100 to be transported; after the workpiece 100 to be transported is placed in the placing end 43, a gap exists between the workpiece 100 to be transported and the placing end 43, so that the workpiece 100 to be transported can swing, the deviation of the centering component 3X direction and Y direction is compensated, and the abnormal twisting of the workpiece 100 to be transported is prevented.

The foregoing is only an optional embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the present utility model. The foregoing is only an optional embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. An automatic tightening device, comprising:

a clamping assembly;

the conveying assembly comprises a storage area, a discharge area and a driving part, wherein the storage area is used for placing a workpiece to be conveyed, and the driving part is used for driving the workpiece to be conveyed to move from the storage area to the discharge area;

the centering assembly comprises two telescopic components, the two telescopic components are arranged in a crossing mode, and the two telescopic components are used for fixing a workpiece to be installed;

the tightening assembly is telescopically arranged at the bottom of the centering assembly, the tightening assembly comprises a placing end, the clamping assembly is used for conveying the workpiece to be conveyed in the storage area to the placing end, and the placing end can be connected with the workpiece to be conveyed and the workpiece to be installed;

the clamping assembly is arranged between the conveying assembly and the tightening assembly.

2. The automatic tightening device according to claim 1, wherein the transportation assembly further comprises a vertical plate and two blocking plates arranged on the vertical plate, the driving part comprises a sleeve and a rotating motor, the vertical plate is provided with a rotating hole, the rotating motor is installed on one side, away from the blocking plate, of the vertical plate, an output shaft of the rotating motor extends out of the rotating hole, the sleeve is sleeved on the periphery of the output shaft, the two blocking plates are all abutted with the outer wall of the sleeve, the storage area is formed, a first groove is formed in the sleeve, the first groove is used for storing a workpiece to be transported, and the rotating motor can drive the sleeve to rotate so as to enable the workpiece to be transported in the first groove to pass through the blocking plate and be transported to the discharge area.

3. The automatic tightening device according to claim 2, wherein the number of the first grooves is plural, and the plurality of the first grooves are uniformly distributed on the outer wall of the sleeve.

4. The automatic tightening device according to claim 2, wherein the driving part further comprises a linear guide and a rodless cylinder, the transport assembly further comprises a mounting table, the rodless cylinder is mounted on the mounting table, the linear guide is mounted on a moving portion of the rodless cylinder, the linear guide is disposed at a bottom of the sleeve, and the discharging area is disposed on the linear guide.

5. The automatic tightening device according to claim 4, wherein a second groove is provided on the linear guide rail, the second groove being used for storing the workpiece to be transported, which is transported to the discharging area by the sleeve.

6. The automatic tightening device according to claim 1, wherein the transport assembly further comprises a fixing frame and a pressing plate, a first telescopic cylinder is arranged in the fixing frame, the pressing plate is connected with an extension shaft of the first telescopic cylinder, and the first telescopic cylinder can drive the pressing plate to be close to or far away from the storage area.

7. The automatic tightening device according to claim 1, wherein the clamping assembly comprises a mounting seat, a clamping cylinder and a clamping jaw, the clamping cylinder is mounted on the mounting seat, the clamping cylinder is provided with a sliding groove, the clamping jaw comprises a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion are both slidably mounted on the sliding groove, and the clamping cylinder can drive the first clamping portion and the second clamping portion to be close to each other or far away from each other.

8. The automatic tightening device according to claim 1, wherein the telescopic member includes a fixing plate, a power motor, a gear, and two centering fixing rods, the centering fixing rods are provided with racks and a plurality of centering installation positions, the plurality of centering installation positions are all used for installing the workpiece to be installed, the fixing plate is provided with a through hole, the power motor is installed in the fixing plate, an output shaft of the power motor extends out of the through hole, the gear is installed in the output shaft, the two racks are engaged with the gear, and the two racks can move in opposite directions respectively.

9. The automatic tightening device according to claim 8, wherein the tightening assembly comprises a base and a tightening member, the fixing plate is mounted on the top of the base, a horizontally arranged rail is further arranged on the side face of the base, the tightening member comprises a tightening gun, a back plate and a second telescopic cylinder, an extension shaft of the second telescopic cylinder is connected with the tightening gun, the back plate is provided with a sliding block, and the sliding block is slidably mounted on the rail.

10. The automatic tightening device according to claim 9, wherein the placement end is provided at a top of the tightening gun, the placement end is a circular hole, and a size of the circular hole is larger than a size of the workpiece to be transported.