CN215091905U - Screw locking mechanism for screw locking robot - Google Patents

Abstract

A screw locking mechanism for a screw locking robot comprises a rotating motor, a guide shaft, a screw rod, a floating assembly and a lifting motor, wherein the floating assembly comprises a connecting sleeve and a floating elastic part, the upper end part of the connecting sleeve is connected with the rotating shaft in a matched mode, the lower end part of the connecting sleeve is connected with a screwdriver rod in a matched mode, and the screwdriver rod and the rotating shaft are in a floating state; the connecting sleeve is a hollow pipe body, a floating elastic part is sleeved in the pipe body, the lower end part of the rotating shaft is provided with an elastic acting part, and the floating elastic part is in a compressed state and always provides downward elastic acting force for the batch rod; the guide shaft, the rotating shaft, the connecting sleeve, the floating elastic piece and the batch rod are positioned on the same axial direction. The utility model discloses a to float the subassembly setting in the junction of criticizing pole, pivot and adapter sleeve, provide the direction of elastic force by the adapter sleeve for the elastic component that floats, make the shock attenuation effect optimization of subassembly that floats to this avoids criticizing the pole lock and attaches the precision and reduce, can simplify the structure, reduce weight, increase the precision.

Description

Screw locking mechanism for screw locking robot

Technical Field

The utility model relates to an automatic assembly technical field, in particular to a screw locking mechanism for lock screw robot.

Background

With the acceleration of the modernization construction pace, the demand of electric products and household electrical appliances is continuously increased, the production line of mechanical and automatic production and assembly is greatly increased, and the mode of manually grabbing screws or rivets and screwing locks by an electric screwdriver is far from being suitable for the requirements of mechanical and automatic large-scale production and assembly. Therefore, how to solve the problems of high-speed screw locking and improving the quality and consistency of locking becomes a topic of great attention by those skilled in the art.

In order to solve the problem, various screw locking robots are developed by a plurality of manufacturers, and are mainly characterized in that a screw feeding device blows screws into a left and right openable elastic clamping mouth below a screwdriver head, the clamping mouth and the screws are moved to positions close to a screw hole by a set of pneumatic or electric mechanism, then the screwdriver and the screwdriver head are driven by the other set of pneumatic or electric mechanism to move downwards to push the screws out of the clamping mouth, and the screws or rivets are locked into the screw holes. However, the screw locking robot has various problems, such as damage to a locked product caused by axial impact force of the screwdriver rod during operation.

Therefore, the applicant researches and designs a screw locking mechanism aiming at the defects, applies for a Chinese patent with the publication number of '207189132U' (the patent name is 'screw locking mechanism of screw locking robot', and the patent number is 'CN 201720553973.7'), and discloses the screw locking mechanism of the screw locking robot in the patent, which comprises a rotating motor, a guide shaft, a screw rod, a buoyancy mechanism and a lifting motor, wherein the rotating motor is arranged on a cantilever, the buoyancy mechanism comprises a spring and a pin shaft, the pin shaft penetrates through the cantilever and a screw rod nut to be matched and connected, and the spring is penetrated on the pin shaft and is vertically connected with the upper end of the pin shaft and the cantilever respectively. In the process of implementing the present invention, the inventor finds that there are at least the following problems in the prior art:

1. in the prior art, a pin shaft of a buoyancy mechanism penetrates through a cantilever to be matched and connected with a lead screw nut, a spring needs to bear the axial impact force and also needs to bear the gravity action of the cantilever and other parts, and the spring with larger specification needs to be used to meet corresponding requirements;

2. in the prior art, the mounting part of the spring in the buoyancy mechanism is arranged on the pin shaft, the direction of the elastic acting force of the spring is guided by the axial direction of the pin shaft, and the mounting part of the pin shaft is only parallel to the axial direction of the bit head instead of coaxial, so that after the bit head is subjected to axial impact force, the direction of the buffering acting force of the spring is different from the stress direction of the bit head, and the buffering effect can be reduced;

3. in the prior art, a pin shaft of the buoyancy mechanism penetrates through the cantilever and the screw nut to be connected in a matched mode, the pin shaft needs to have stronger structural strength as a function part of the buoyancy mechanism in the screw locking mechanism, the pin shaft and the screw nut need to be connected through an additional structure to be supported, the overall weight and the structural complexity of the screw locking mechanism can be increased, and negative effects are brought to early-stage design, assembly and subsequent use.

In view of this, how to solve the problems of the conventional screw locking mechanism, such as large requirement on the spring, poor buffering effect, increased overall weight, and complicated structure, is the subject to be researched and solved by the present invention.

Disclosure of Invention

The utility model provides a screw locking mechanism for lock screw robot, its purpose be solved that current screw locking mechanism exists require big, the cushioning effect is not good, increase whole weight, the complicated scheduling problem of structure to the spring to a screw locking mechanism that can simplify the structure, reduce weight, increase the precision is provided.

In order to achieve the purpose, the utility model provides a screw locking mechanism for a screw locking robot, which comprises a rotating motor, a guide shaft, a screw rod, a floating assembly and a lifting motor, wherein the lifting motor drives the screw rod to move up and down;

the rotary motor is arranged on a cantilever, and the cantilever is matched and connected with the screw rod nut and the bearing;

the upper end of the screw rod is connected with a screw rod nut in a matching way, the lower end of the screw rod is connected with a lifting motor in a matching way through a first synchronous assembly, and the screw rod nut penetrates through the cantilever;

the upper end of the guide shaft is connected with the bearing, a rotating shaft is sleeved in the guide shaft, and the rotating shaft penetrates through the bearing and penetrates through the guide shaft; the upper end of the rotating shaft is connected with the rotating motor in a matching way through a second synchronous assembly, and the lower end of the rotating shaft is connected with a batch rod in a matching way;

the innovation points are as follows:

the floating assembly comprises a connecting sleeve and a floating elastic part; the upper end part of the connecting sleeve is connected with the rotating shaft in a matching way, the lower end part of the connecting sleeve is connected with the batch rod in a matching way, and at least one of the connecting sleeve and the rotating shaft in the matching way and the connecting sleeve and the batch rod in the matching way is in floating connection, so that an up-and-down floating structure of the batch rod relative to the rotating shaft is formed; the connecting sleeve is a hollow pipe body, a floating elastic piece is sleeved in the pipe body, the lower end part of the rotating shaft is provided with an elastic acting part which is used for abutting against the floating elastic piece, and the surface of the elastic acting part faces downwards; an elastic action surface which is used for abutting against the floating elastic piece is arranged at the upper end part of the batch rod corresponding to the elastic action part, and the action surface is arranged upwards; one end of the floating elastic piece is propped against the elastic action part of the rotating shaft, the other end of the floating elastic piece is propped against the elastic action surface of the batch rod, and the floating elastic piece is in a compressed state and always provides downward elastic action force for the batch rod; the guide shaft, the rotating shaft, the connecting sleeve, the floating elastic piece and the batch rod are positioned on the same axial direction.

The related content of the utility model is explained as follows:

1. in the above technical solution of the present invention, the floating assembly is disposed at the joint of the batch rod, the rotating shaft and the connecting sleeve, and the floating elastic member is abutted against the batch rod and the rotating shaft, and the connecting sleeve provides the elastic force for the floating elastic member, so as to provide a good and coaxial elastic force, so as to improve the locking precision of the batch rod, and change the impact force originally required to be borne by most parts of the screw locking mechanism into only being borne by the batch rod and the floating elastic member, because the floating elastic member is disposed at the top of the batch rod and only being used for damping the batch rod, the size and specification of the floating elastic member are not too large, and the requirement for the performance of the floating elastic member is also reduced; meanwhile, the floating assembly adopting the structure can reduce the size specification while keeping good damping effect on the screwdriver rod, so that the whole weight of the screw locking mechanism is reduced, the structural complexity of the screw locking mechanism is also reduced, and the structure of the floating assembly is simplified.

2. In the technical scheme, the setting mode of the rotating motor on the cantilever is one of reverse hanging setting to the right of the cantilever, forward hanging setting to the right of the cantilever, middle hanging setting to the cantilever and left hanging setting to the cantilever, the installation mode of the rotating motor is various, different installation modes can be selected according to different actual demands, and the application range is wider.

3. In the technical scheme, the elastic action portion of pivot is for seting up the recess in the pivot bottom, forms in this recess and supplies the elastic component male accommodation space that floats, and one section distance is exposed downwards behind the elastic component insertion recess that floats, and the below of the elastic component that floats of this section offsets with criticizing the pole up end, adopts such structure to enable the elastic component that floats to have better support and direction, ensures to criticize the pole and can receive with guiding axle, the coaxial elastic acting force of pivot, ensures to criticize the lock of pole and attaches the precision.

4. In the technical scheme, the batch rod is in floating connection with the connecting sleeve through the plug pin; in the two of criticizing pole and adapter sleeve, one of them sets up the fixed orifices that supplies bolt fixed connection, and the floating slot that supplies the bolt to wear to establish and can shift from top to bottom is seted up to the other, the floating slot is along criticizing the slotted hole that the pole axial set up from top to bottom, adopts such structure realization easy, simple production, and the cost is also lower, also has the better effect that forms the compression stroke simultaneously.

5. In the technical scheme, the first synchronous assembly comprises a synchronous belt wheel and a first synchronous belt, and the lower end of the screw rod is connected with the lifting motor in a matched manner through the synchronous belt wheel and the synchronous belt; the second synchronous component comprises a synchronous gear and a second synchronous belt, and the upper end of the rotating shaft is connected with the rotating motor in a matching mode through the synchronous gear and the synchronous belt.

6. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, indirectly coupled through intervening media, coupled between two elements, or coupled in any other manner that does not materially affect the operation of the device, unless otherwise specifically limited. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

7. In the present invention, the terms "center", "upper", "lower", "axial", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional assembly relationships shown in the drawings, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.

8. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Because of the application of above-mentioned scheme, compared with the prior art, the utility model have following advantage and effect:

1. the above technical scheme of the utility model, the subassembly setting that will float is criticizing the pole, the junction of pivot and adapter sleeve, and with the elastic component that will float with criticizing the pole, the pivot is supported and is leaned on, make the impact force that originally needs most spare parts of screw locking mechanism to remove to bear change into only with criticizing pole and the elastic component that floats, because this elastic component that floats is located criticize the top of pole and only with carrying out the cushioning effect to criticizing pole itself, avoid criticizing the pole when carrying out the too big resistance that meets before the lock attaches, make the pole of criticizing power of exerting oneself too big downwards, damage the screw hole, damage the product, the size of the elastic component that floats, the specification need not be too big, not so big bearing requirement, let the performance requirement of the elastic component that floats also can reduce.

2. The above technical scheme of the utility model, provide elastic force's direction by the adapter sleeve for the elastic component that floats, and the guiding axle, the apparatus further comprises a rotating shaft, the adapter sleeve, the elastic component that floats and criticize the pole and be located same axis direction, in order to provide good, coaxial elastic force, make the impact force that criticizes the pole and receive offset by its opposite direction, the elastic force on the coaxial line, make the shock attenuation effect optimization of subassembly that floats, avoid criticizing the pole lock with this and attach the precision and reduce, ensure that the lock attaches the product accuracy, efficiency.

3. The above technical scheme of the utility model, the structure of subassembly that floats has been simplified for screw locking mechanism's whole weight can alleviate, has also reduced this screw locking mechanism's structure complexity, can realize its shock-absorbing function not increasing too many extra strengthening parts, lets screw locking mechanism's manufacturing cost, equipment cost can descend.

Drawings

Fig. 1 is a schematic overall structure diagram of a screw locking mechanism for a screw locking robot according to an embodiment of the present invention;

fig. 2 is a partial cross-sectional view of a screw locking mechanism for a screw locking robot according to an embodiment of the present invention.

The drawings are shown in the following parts:

101. a rotating electric machine; 102. a lifting motor;

2. a guide shaft; 21. a rotating shaft; 211. an elastic action portion;

3. a screw rod; 31. a feed screw nut;

4. a floating assembly; 41. connecting sleeves; 411. a floating tank; 42. a floating elastic member;

5. a batching rod; 51. an elastic action surface; 52. a fixing hole;

6. a cantilever;

7. a first synchronization component; 71. a synchronous pulley; 72. a first synchronization belt;

8. a second synchronization component; 81. a synchronizing gear; 82. a second synchronous belt;

9. and (4) a bolt.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

As shown in fig. 1, an embodiment of the present invention provides a screw locking mechanism for a screw locking robot, which includes a rotating electrical machine 101, a guide shaft 2, a lead screw 3, a floating assembly 4 and a lifting electrical machine 102, wherein the lifting electrical machine 102 drives the lead screw 3 to move up and down; the rotating motor 101 is arranged on a cantilever 6, and the cantilever 6 is mutually matched and connected with a feed screw nut 31 and a bearing (the bearing is not shown in the drawing); the upper end of the screw rod 3 is connected with a screw rod nut 31 in a matching way, the lower end of the screw rod is connected with a lifting motor 102 in a matching way through a first synchronizing assembly 7, and the screw rod nut 31 penetrates through a cantilever 6; the upper end of the guide shaft 2 is connected with a bearing, a rotating shaft 21 is sleeved in the guide shaft 2, and the rotating shaft 21 penetrates through the bearing and penetrates through the guide shaft 2; the upper end of the rotating shaft 21 is connected with the rotating motor 101 in a matched mode through the second synchronizing assembly 8, and the lower end of the rotating shaft is connected with the batch rod 5 in a matched mode.

The improvement of the utility model is that the floating component 4 comprises a connecting sleeve 41 and a floating elastic piece 42; the upper end part of the connecting sleeve 41 is connected with the rotating shaft 21 in a matching way, the lower end part of the connecting sleeve 41 is connected with the batch rod 5 in a matching way, at least one of the connecting sleeve 41 and the rotating shaft 21 in a matching way and the connecting sleeve 41 and the batch rod 5 in a matching way is in floating connection, and an up-and-down floating structure of the batch rod 5 relative to the rotating shaft 21 is formed; the connecting sleeve 41 is a hollow tube body, a floating elastic piece 42 is sleeved in the tube body, an elastic action part 211 which is used for abutting against the floating elastic piece 42 is arranged at the lower end part of the rotating shaft 21, and the elastic action part 211 faces downwards; an elastic operation surface 51 for abutting against the floating elastic member 42 is provided at the upper end portion of the batch lever 5 corresponding to the elastic operation portion 211, and the operation surface is provided facing upward; one end of the floating elastic piece 42 is abutted against the elastic action part 211 of the rotating shaft 21, the other end is abutted against the elastic action surface 51 of the batch rod 5, and the floating elastic piece 42 is in a compressed state and always provides downward elastic action force for the batch rod 5; the guide shaft 2, the rotating shaft 21, the connecting sleeve 41, the floating elastic piece 42 and the batch rod 5 are positioned in the same axial direction.

Through the implementation of the above embodiment, the floating assembly 4 in the screw locking mechanism has an initial state and an operating state, the initial state is a state where the whole screw locking mechanism is not subjected to impact force when the screw locking mechanism is not operated, and the operating state is a state where the screw locking mechanism is subjected to impact force when the screw locking mechanism is operated, and the initial state and the operating state are respectively described below.

In the initial state: the screw locking mechanism is not operated, the batch rod 5 is not affected by external impact force, one end of the floating elastic piece 42 in a compressed state abuts against the rotating shaft 21, the other end abuts against the batch rod 5, and the floating elastic piece 42 continuously provides downward elastic acting force for the batch rod 5, so that sufficient downward pressure of the batch rod 5 is ensured, and the batch rod 5 can stably operate.

Under the working state: the screw locking mechanism is started to use, the lifting motor 102 and the screw rod 3 are matched to drive the guide shaft 2, the rotating shaft 21, the connecting sleeve 41, the floating assembly 4, the batch rod 5 and other components to move downwards to a working position, the rotating motor 101 drives the rotating shaft 21 and the batch rod 5 to rotate, the batch rod 5 is in contact fit with a locking workpiece to perform locking operation at the moment, the batch rod 5 can be impacted upwards by the axial line of the batch rod 5 in the process, the batch rod 5 can float upwards for a certain distance and is propped against by the floating elastic piece 42 in the whole process to form a damping stroke, the floating spring can effectively offset the impact force of the batch rod 5 in the damping stroke, and meanwhile due to the matching connection relationship between the floating assembly 4 and other components, the elastic acting force is ensured to be the coaxial opposite direction of the impact force of the batch rod 5, so that a good batch rod 5 damping effect is achieved.

The embodiment of the utility model provides an in, the elastic action portion 211 of pivot 21 is for seting up the recess in pivot 21 bottom, forms in this recess and supplies the male accommodation space of unsteady elastic component 42, and one section distance is exposed downwards behind the unsteady elastic component 42 insertion recess, and the below of this section unsteady elastic component 42 offsets with criticizing pole 5 up end, adopts such structure to enable unsteady elastic component 42 to have better support and direction, ensures to criticize pole 5 and can receive with guiding axle 2, the coaxial elastic force of pivot 21, ensures to criticize the lock of pole 5 and attaches the precision.

In the embodiment of the present invention, the batch rod 5 is connected with the connecting sleeve 41 through the plug 9 in a floating manner; in the two of criticizing pole 5 and adapter sleeve 41, one of them is seted up and is supplied the fixed orifices 52 of bolt 9 fixed connection, and the other is seted up and is supplied bolt 9 to wear to establish and can let criticize pole 5 or the unsteady groove 411 of bolt 9 displacement from top to bottom, unsteady groove 411 is along criticizing pole 5 axial slotted hole that sets up from top to bottom, adopts such structure realization easy, simple production, and the cost is also lower, also has the better effect that forms the compression stroke simultaneously.

In the embodiment of the present invention, the first synchronizing assembly 7 includes a synchronous pulley 71 and a first synchronous belt 72, and the lower end of the screw rod 3 is connected to the lifting motor 102 through the synchronous pulley 71 and the synchronous belt; the second synchronizing assembly 8 comprises a synchronizing gear 81 and a second synchronizing belt 82, and the upper end of the rotating shaft 21 is connected with the rotating motor 101 through the synchronizing gear 81 and the synchronizing belt.

Through the implementation of the above embodiment, the floating assembly 4 is disposed at the connection position of the batch rod 5, the rotating shaft 21 and the connecting sleeve 41, the floating elastic member 42 abuts against the batch rod 5 and the rotating shaft 21, the connecting sleeve 41 provides elastic force for guiding the floating elastic member 42, so as to provide good and coaxial elastic force, and improve the locking precision of the batch rod 5, so that the impact force originally required to be borne by most parts of the screw locking mechanism is changed to be borne by only the batch rod 5 and the floating elastic member 42, because the floating elastic member 42 is located at the top of the batch rod 5 and only performs a damping action on the batch rod 5 itself, the size and specification of the floating elastic member 42 are not too large, so large bearing requirements are not required, and the performance requirements of the floating elastic member 42 can also be reduced; meanwhile, the floating assembly 4 with the structure can reduce the size specification while keeping good damping effect on the batch rod 5, so that the whole weight of the screw locking mechanism is reduced, the structural complexity of the screw locking mechanism is reduced, and the structure of the floating assembly 4 is simplified.

With respect to the above embodiments, the changes that may be made by the present invention are described as follows:

1. in the above embodiment, the floating elastic member 42 may be a compression spring, but the present invention is not limited thereto, and the floating elastic member 42 may also be other elements capable of utilizing elastic deformation to make the batch rod 5 have a downward elastic displacement tendency, such as a pressure spring tube, a torsion spring, an elastic high-pressure sponge, etc.

2. In the above embodiment, the setting mode of the rotating electrical machine 101 on the cantilever 6 is one of an inverted hanging setting to the right of the cantilever 6, a forward hanging setting to the right of the cantilever 6, a middle hanging setting to the middle of the cantilever 6 and a left hanging setting to the cantilever 6, the installation mode of the rotating electrical machine 101 is various, different installation modes can be selected according to different actual requirements, the application range is wider, and the method can be understood and accepted by those skilled in the art, and therefore, the description of related mechanisms is not repeated.

3. In the above embodiment, referring to fig. 2, the batch rod 5 is connected with the connecting sleeve 41 in a floating manner through the plug 9, a floating slot 411 is formed in the connecting sleeve 41, a fixing hole 52 is formed in the batch rod 5, the plug 9 is fixed with the batch rod 5, and two ends of the plug 9 are displaced up and down along the floating slot 411, so as to drive the batch rod 5 to float up and down when being rented by external force; however, the utility model discloses not using this as the limit, also can set up a floating slot 411 wholesale pole 5, open in adapter sleeve 41 and establish a fixed orifices, bolt 9 passes fixed orifices, floating slot, and bolt 9 keeps motionless with adapter sleeve 41, wholesale pole 5 with floating slot, adapter sleeve 41's the cavity hole body as the direction displacement from top to bottom.

4. In the above embodiment, the upper end of the connecting sleeve 41 is fixedly connected with the rotating shaft 21, and the lower end of the connecting sleeve 41 is connected with the batch rod 5 in a floating manner, so that the concentricity and the abrasion of the batch rod can be better; however, the present invention is not limited to this, and the upper end portion of the connection sleeve 41 may be connected to the rotation shaft 21 in a floating manner, and the lower end portion of the connection sleeve 41 is fixedly connected to the batch rod 5, so that the batch rod 5 can float up and down in the axial direction relative to the rotation shaft 21.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (6)

1. A screw locking mechanism for a screw locking robot comprises a rotating motor (101), a guide shaft (2), a screw rod (3), a floating assembly (4) and a lifting motor (102), wherein the lifting motor (102) drives the screw rod (3) to move up and down;

the rotating motor (101) is arranged on the cantilever (6), and the cantilever (6) is connected with the feed screw nut (31) and the bearing in a matched manner;

the upper end of the screw rod (3) is connected with a screw rod nut (31) in a matching way, the lower end of the screw rod is connected with a lifting motor (102) in a matching way through a first synchronous assembly (7), and the screw rod nut (31) penetrates through the cantilever (6);

the upper end of the guide shaft (2) is connected with a bearing, a rotating shaft (21) is sleeved in the guide shaft (2), and the rotating shaft (21) is connected to the bearing in a penetrating manner and penetrates through the guide shaft (2); the upper end of the rotating shaft (21) is connected with the rotating motor (101) in a matching way through a second synchronous component (8), and the lower end of the rotating shaft is connected with the batch rod (5) in a matching way;

the method is characterized in that:

the floating assembly (4) comprises a connecting sleeve (41) and a floating elastic piece (42); the upper end part of the connecting sleeve (41) is connected with the rotating shaft (21) in a matching way, the lower end part of the connecting sleeve (41) is connected with the batch rod (5) in a matching way, at least one of the connecting sleeve (41) and the rotating shaft (21) is connected in a matching way and the connecting sleeve (41) and the batch rod (5) are connected in a matching way is in a floating connection, and an up-and-down floating structure of the batch rod (5) relative to the rotating shaft (21) is formed; the connecting sleeve (41) is a hollow pipe body, a floating elastic piece (42) is sleeved in the pipe body, the lower end part of the rotating shaft (21) is provided with an elastic acting part (211) which is used for abutting against the floating elastic piece (42), and the surface of the elastic acting part (211) faces downwards; an elastic action surface (51) for abutting against the floating elastic piece (42) is arranged at the upper end part of the batch rod (5) corresponding to the elastic action part (211), and the action surface is arranged upwards; one end of the floating elastic piece (42) is abutted against the elastic action part (211) of the rotating shaft (21), the other end of the floating elastic piece is abutted against the elastic action surface (51) of the batch rod (5), and the floating elastic piece (42) is in a compressed state and always provides downward elastic acting force for the batch rod (5); the guide shaft (2), the rotating shaft (21), the connecting sleeve (41), the floating elastic piece (42) and the batch rod (5) are located on the same axial direction.

2. The screw locking mechanism for a screw locking robot according to claim 1, wherein: the arrangement mode of the rotating motor (101) on the cantilever (6) is one of reverse hanging arrangement towards the right of the cantilever (6), forward hanging arrangement towards the right of the cantilever (6), hanging arrangement towards the middle of the cantilever (6) and hanging arrangement towards the left of the cantilever (6).

3. The screw locking mechanism for a screw locking robot according to claim 1, wherein: the elastic action part (211) of the rotating shaft (21) is a groove arranged at the bottom of the rotating shaft (21), and an accommodating space for the floating elastic piece (42) to insert is formed in the groove.

4. The screw locking mechanism for a screw locking robot according to claim 1, wherein: the batch rod (5) is in floating connection with the connecting sleeve (41) through a plug pin (9); in the two of criticizing pole (5) and adapter sleeve (41), one of them is seted up and is supplied bolt (9) fixed connection's fixed orifices (52), and the other is seted up and is supplied bolt (9) to wear to establish and can let bolt (9) or criticize pole (5) floating groove (411) of displacement from top to bottom.

5. The screw locking mechanism for the screw locking robot according to claim 4, wherein: the floating groove (411) is a groove hole which is arranged up and down along the axial direction of the batch rod (5).

6. The screw locking mechanism for a screw locking robot according to claim 1, wherein: the first synchronous assembly (7) comprises a synchronous pulley (71) and a first synchronous belt (72), and the lower end of the screw rod (3) is connected with the lifting motor (102) in a matched mode through the synchronous pulley (71) and the synchronous belt (72); the second synchronizing assembly (8) comprises a synchronizing gear (81) and a second synchronous belt (82), and the upper end of the rotating shaft (21) is connected with the rotating motor (101) in a matched mode through the synchronizing gear (81) and the synchronous belt (82).

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