CN215035166U

CN215035166U - Nail righting mechanism on screw

Info

Publication number: CN215035166U
Application number: CN202023335508.7U
Authority: CN
Inventors: 钱杰; 张梁; 金大峰; 沈峰; 许震强
Original assignee: Zhejiang Weihong Iot Technology Co ltd
Current assignee: Zhejiang Weihong Iot Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-07
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a screw-on-screw righting mechanism, which comprises an automatic screw-on-screw tightening mechanism and a righting component; the front end of the automatic screw feeding and tightening mechanism is provided with a screw feeding pipe for pushing out a screw, so that the screw loaded on the screw feeding pipe can be screwed forward; the centralizing component can clamp the screw from two sides and prevent the screw from deflecting to a certain side in the screw advancing process. The screw thread part of the long screw is centered by a simple, stable and reliable mechanism, the degree of freedom of a part of the screw is limited, the problem of large-angle swing of the long screw is solved, the screw of the screwing robot is fast and accurately aligned with the center of the screw hole, the screwing process is realized, the labor cost is saved, the production beat is accelerated, and the product assembly process is optimized.

Description

Nail righting mechanism on screw

Technical Field

The utility model relates to an automatic screw installation technical field, concretely relates to nail righting mechanism on screw.

Background

At present, the assembly of parts and products is mostly fastened by screw threads, and with the development of times and the progress of science and technology, the development direction of modern industry is just automation and science and technology. The assembly process of the product directly influences the service life of the product; in the current market, most automatic feeding screw conveying and screwing equipment has certain requirements on the length-diameter ratio of screws, and the requirements on production cannot be met for special proportion. Thus, the creation of this structure solves the problem encountered in practice.

The automatic feeding screw conveying and screwing equipment commonly used in the market at present can only screw screws with short lengths, and when the screws are long, the screws are easy to deviate in the screwing-in process due to the fact that corresponding guide and centering mechanisms are not arranged, and the screws cannot enter threaded holes.

Disclosure of Invention

In order to solve the problems, the invention aims to solve the problem of guiding the longer screw in the blowing process, so that the automatic screwing technology of accurately feeding the long screw can be realized.

In order to achieve the purpose, the invention adopts the following technical scheme: a screw-on-screw righting mechanism comprises an automatic screw-on-screw tightening mechanism and a righting component arranged on the front side of the automatic screw-on-screw tightening mechanism; the front end of the automatic screw-up tightening mechanism is provided with a screw-up tube for pushing out screws, so that the screws in the screw-up tube can be screwed forward to pass through the righting component; the screw can be cliied from both sides to the subassembly in-process is right through righting to the screw, prevents that the screw from advancing the in-process to certain side skew at the spiral. The automatic screwing mechanism used in the scheme is a common thread screwing mechanism on the market, a screw enters an internal rotating structure of the thread screwing mechanism, and the rotating structure rotates and drives the screw to screw forward under the driving of a motor. The front end of the automatic nail screwing mechanism is provided with the righting component capable of clamping two sides of the screw, and the screw is in a balanced state by applying force in two directions and pulling the screw to two sides in the screw installation process, so that the screw is prevented from deviating in the process of screwing into the threaded hole.

Further, the righting assembly comprises two cylindrical rollers arranged on the front side of the upper nail tube; when the screw is pushed out from the upper screw pipe, the cylindrical roller can clamp the screw head end of the screw; the cylindrical roller can rotate in the circumferential direction, so that the screw is always clamped in the screwing-in process of the screw. In the scheme, the screw head end of the screw is clamped by the cylindrical rollers arranged at the end parts of the two mutually hinged connecting rods, so that the screw is always limited in the screwing process; the cylindrical roller is adopted to clamp the screw because the cylindrical roller can rotate forwards along with the forward movement of the screw in the forward screwing process of the screw, so that rolling friction is generated between the screw and the cylindrical roller, the blocking force in the forward screwing process of the screw is reduced, and the forward screwing of the screw is ensured not to be loosened.

Furthermore, the righting assembly also comprises a scissor arm, wherein a guide mounting plate is arranged on the guide mounting plate; the scissor arm comprises two connecting rods which are hinged with each other; the two connecting rods are hinged with each other by taking the middle point as a hinge point, and the hinge shaft is movably arranged on the guide mounting plate; the cylindrical rollers are arranged at one ends of the two connecting rods, which are far away from the automatic nail feeding and tightening mechanism, and the other ends of the two connecting rods are connected with elastic pieces used for providing a shearing fork force. In the scheme, the two connecting rods hinged with each other are arranged to form the shearing fork arm for providing clamping force, and the elastic piece at the other end of the shearing fork arm is used for providing force for clamping the screw.

Furthermore, a first guide groove and a second guide groove are arranged on the guide mounting plate, a hinge shaft of the two connecting rods is movably arranged in the first guide groove, and one ends of the two connecting rods, which are close to the automatic screw tightening mechanism, are provided with guide columns which move along the second guide groove; the first guide groove is a straight line groove parallel to the upper nail tube, and the second guide groove is a straight line groove perpendicular to the first guide groove and is arranged on two sides of the first guide groove. Before the screw is not pushed out by the upper nail tube, the two cylindrical rollers are abutted; after the screw is pushed out of the upper nail tube, the two cylindrical rollers on the front side of the screw are extruded to the two sides, the position change of the hinge shaft is driven by the position change of the cylindrical rollers, and in the process, the moving direction of the hinge shaft is parallel to the screwing direction of the screw, namely the moving direction of the hinge shaft is parallel to the direction of the upper nail tube, so that the first guide groove is a linear groove parallel to the direction of the upper nail tube; in the process, the ends of the two connecting rods, which are close to the automatic nail tightening mechanism, are close to each other, the second guide groove is set to be a straight groove vertical to the first guide groove, and the guide columns move back and forth in the second guide groove when the hinge shaft moves back and forth in the first guide groove.

Furthermore, the elastic part is a spring, the automatic nail feeding and tightening mechanism is provided with a spring mounting plate, and two ends of the spring mounting plate are provided with spring connecting positions; one end of each spring is connected to the end of the corresponding connecting rod, and the other end of each spring is connected to the spring connecting position on the spring mounting plate in a staggered mode. In order to ensure the reliability of the whole structure and enable the structure to be repeatedly used for many times, the elastic part is a spring; in order to facilitate the connection of the spring, a spring mounting plate is arranged on the automatic nail feeding and tightening mechanism; meanwhile, in order to ensure the correctness of the force application direction, when the elasticity of the spring is applied to the connecting rod, the other end of the connecting rod can clamp the screw, and the two springs are connected to the spring connecting positions at the two ends of the spring mounting plate in a staggered manner.

Furthermore, a gasket used for adjusting the position of the end part of the connecting rod is sleeved on the guide post between the second guide groove and the end parts of the two connecting rods. In the whole screw screwing process, the spring always has tension on the other end of the connecting rod, the spring and the connecting rod are not necessarily installed in the same plane, and in order to overcome the tension of the spring, the connecting rod is ensured to rotate in the same plane, the cylindrical roller on the other side is prevented from being misplaced, and a gasket is also arranged between the other end of the connecting rod and the guide installation plate.

Furthermore, the cylindrical rollers are provided with limit grooves matched with the diameters of the screws, and the limit grooves on the two cylindrical rollers correspond to each other, so that a limit channel for limiting the deflection of the screws is formed between the cylindrical rollers on the two connecting rods. The cylindrical rollers of the two connecting rods are provided with limiting grooves matched with the diameters of the screws, and a limiting channel convenient for the screw to screw in is formed between the limiting grooves between the two cylindrical rollers so as to prevent the screw from deviating to the upper side and the lower side in the screwing-in process. The depth and radian of the limiting groove are related to the diameter of the screw, and when the screw with another diameter needs to be installed, the cylindrical roller with another size of the limiting groove needs to be replaced.

Further, the cylindrical roller is fixed at the end part of the connecting rod through a bolt, the cylindrical roller and a bolt sleeve of the connecting rod are provided with a stainless steel gasket for adjusting the position of the cylindrical roller during actual use, the position of a preset limiting groove may not necessarily correspond to the position of a screw, in order to ensure the tightness of the limiting groove and the screw, the stainless steel gasket capable of adjusting the position of the cylindrical roller is arranged between the cylindrical roller and the end part of the connecting rod, the position of the cylindrical roller is finely adjusted according to the number of the stainless steel gasket, and errors generated in the manufacturing and actual use processes are overcome.

Furthermore, the automatic screw feeding and tightening mechanism is provided with a fixing ring for fixing the automatic screw feeding and tightening mechanism on the feeding robot. Because the structure needs to complete the complete function of screwing the nails, other functional components of the feeding robot are also needed, and the position of the whole righting mechanism can be adjusted by adjusting the relative positions of the fixing ring and the automatic nail screwing robot.

Through the technical scheme, the simple, stable and reliable mechanism is adopted to centralize the thread part of the long screw, so that the degree of freedom of a part of the screw is limited, the problem of large-angle swing of the long screw is solved, the screw of the screwing robot is quickly and accurately found to the center of the screw hole, and the screwing process is realized. The labor cost is saved, the production beat is accelerated, and the product assembly process is optimized.

Drawings

Fig. 1 is an overall explanatory view of the present invention.

Fig. 2 is a bottom view of the present application.

Fig. 3 is a side view of the present invention.

Fig. 4 is a top view of the present invention.

Fig. 5 is a top view of the nail tube removing device of the present invention.

In the figure: the automatic nail feeding tightening mechanism 1, the fixing ring 2, the spring mounting plate 3, the guide mounting plate 5, the first guide groove 51, the second guide groove 52, the cylindrical roller 6, the limiting groove 61, the bolt 62, the stainless steel gasket 7, the screw 8, the connecting rod 9, the hinge shaft 91, the guide column 92, the spring 10 and the nail feeding pipe 11.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be a mechanical connection, but also an electrical connection; can be directly connected or indirectly connected through intervening media, and can communicate between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example (b): as shown in fig. 1 to 5, a screw-on-screw centering mechanism includes an automatic screw-on tightening mechanism and a centering assembly disposed at a front side of the automatic screw-on tightening mechanism; the front end of the automatic screw-up tightening mechanism is provided with a screw-up tube for pushing out screws, so that the screws in the screw-up tube can be screwed forward to pass through the righting component; the screw can be cliied from both sides to the subassembly in-process is right through righting to the screw, prevents that the screw from advancing the in-process to certain side skew at the spiral. The automatic screwing mechanism used in the scheme is a common thread screwing mechanism on the market, a screw enters an internal rotating structure of the thread screwing mechanism, and the rotating structure rotates and drives the screw to screw forward under the driving of a motor. The front end of the automatic nail screwing mechanism is provided with the righting component capable of clamping two sides of the screw, and the screw is in a balanced state by applying force in two directions and pulling the screw to two sides in the screw installation process, so that the screw is prevented from deviating in the process of screwing into the threaded hole.

As shown in fig. 1, the centralizing assembly comprises two cylindrical rollers arranged at the front side of the upper nail tube; when the screw is pushed out from the upper screw pipe, the cylindrical roller can clamp the screw head end of the screw; the cylindrical roller can rotate in the circumferential direction, so that the screw is always clamped in the screwing-in process of the screw. In the scheme, the screw head end of the screw is clamped by the cylindrical rollers arranged at the end parts of the two mutually hinged connecting rods, so that the screw is always limited in the screwing process; the cylindrical roller is adopted to clamp the screw because the cylindrical roller can rotate forwards along with the forward movement of the screw in the forward screwing process of the screw, so that rolling friction is generated between the screw and the cylindrical roller, the blocking force in the forward screwing process of the screw is reduced, and the forward screwing of the screw is ensured not to be loosened.

As shown in fig. 5, the centralizer assembly further comprises a scissor arm guided mounting plate disposed on the mounting plate; the scissor arm comprises two connecting rods which are hinged with each other; the two connecting rods are hinged with each other by taking the middle point as a hinge point, and the hinge shaft is movably arranged on the guide mounting plate; the cylindrical rollers are arranged at one ends of the two connecting rods, which are far away from the automatic nail feeding and tightening mechanism, and the other ends of the two connecting rods are connected with elastic pieces used for providing a shearing fork force. In the scheme, the two connecting rods hinged with each other are arranged to form the shearing fork arm for providing clamping force, and the elastic piece at the other end of the shearing fork arm is used for providing force for clamping the screw.

As shown in fig. 2, a first guide groove and a second guide groove are arranged on the guide mounting plate, a hinge shaft of the two connecting rods is movably arranged in the first guide groove, and a guide post moving along the second guide groove is arranged at one end of the two connecting rods close to the automatic screw-up mechanism; the first guide groove is a straight line groove parallel to the upper nail tube, and the second guide groove is a straight line groove perpendicular to the first guide groove and is arranged on two sides of the first guide groove. Before the screw is not pushed out by the upper nail tube, the two cylindrical rollers are abutted; after the screw is pushed out of the upper nail tube, the two cylindrical rollers on the front side of the screw are extruded to the two sides, the position change of the hinge shaft is driven by the position change of the cylindrical rollers, and in the process, the moving direction of the hinge shaft is parallel to the screwing direction of the screw, namely the moving direction of the hinge shaft is parallel to the direction of the upper nail tube, so that the first guide groove is a linear groove parallel to the direction of the upper nail tube; in the process, the ends of the two connecting rods, which are close to the automatic nail tightening mechanism, are close to each other, the second guide groove is set to be a straight groove vertical to the first guide groove, and the guide columns move back and forth in the second guide groove when the hinge shaft moves back and forth in the first guide groove.

As shown in fig. 1, the elastic member is a spring, the automatic screw-up tightening mechanism is provided with a spring mounting plate, and two ends of the spring mounting plate are provided with spring connecting positions; one end of each spring is connected to the end of the corresponding connecting rod, and the other end of each spring is connected to the spring connecting position on the spring mounting plate in a staggered mode. In order to ensure the reliability of the whole structure and enable the structure to be repeatedly used for many times, the elastic part is a spring; in order to facilitate the connection of the spring, a spring mounting plate is arranged on the automatic nail feeding and tightening mechanism; meanwhile, in order to ensure the correctness of the force application direction, when the elasticity of the spring is applied to the connecting rod, the other end of the connecting rod can clamp the screw, and the two springs are connected to the spring connecting positions at the two ends of the spring mounting plate in a staggered manner.

As shown in fig. 3, a spacer for adjusting the position of the end of the connecting rod is sleeved on the guide post between the second guide groove and the end of the connecting rod. In the whole screw screwing process, the spring always has tension on the other end of the connecting rod, the spring and the connecting rod are not necessarily installed in the same plane, and in order to overcome the tension of the spring, the connecting rod is ensured to rotate in the same plane, the cylindrical roller on the other side is prevented from being misplaced, and a gasket is also arranged between the other end of the connecting rod and the guide installation plate.

As shown in fig. 1, the cylindrical rollers are provided with limiting grooves adapted to the diameter of the screw, and the limiting grooves on the two cylindrical rollers correspond to each other, so that a limiting channel for limiting the deflection of the screw is formed between the cylindrical rollers on the two connecting rods. The cylindrical rollers of the two connecting rods are provided with limiting grooves matched with the diameters of the screws, and a limiting channel convenient for the screw to screw in is formed between the limiting grooves between the two cylindrical rollers so as to prevent the screw from deviating to the upper side and the lower side in the screwing-in process. The depth and radian of the limiting groove are related to the diameter of the screw, and when the screw with another diameter needs to be installed, the cylindrical roller with another size of the limiting groove needs to be replaced. The cylindrical roller passes through the bolt fastening at the connecting rod tip, the cylindrical roller is equipped with the stainless steel gasket that is used for adjusting the cylindrical roller position with the bolt cover of connecting rod when the in-service use, the position of predetermined spacing groove probably can not correspond with the position of screw, in order to guarantee spacing groove and screw complex compactness, set up the stainless steel gasket that can adjust the cylindrical roller position between cylindrical roller and connecting rod tip, the position of cylindrical roller position is finely tuned to what through the stainless steel gasket, be used for overcoming the error that produces in manufacturing and the in-service use process.

The automatic nail feeding and screwing mechanism is provided with a fixing ring used for fixing the automatic nail feeding and screwing mechanism on the feeding robot. Because the structure needs to complete the complete function of screwing the nails, other functional components of the feeding robot are also needed, and the position of the whole righting mechanism can be adjusted by adjusting the relative positions of the fixing ring and the automatic nail screwing robot.

Description of the working process: the mechanism is applied to automatic assembly and assembly lines, the whole righting mechanism is fixed on an automatic screw-up robot part through a fixing ring, a screw pushed out by a robot suction nozzle contacts with cylindrical rollers, the two cylindrical rollers expand towards two sides respectively, and a connecting rod is driven by tensile force generated by stretching of a spring, so that the cylindrical rollers connected to the connecting rod generate pressing force on the screw, the screw is fixed in a limiting groove to slide, and the degree of freedom of the screw is limited; the screw can accurately find the center position of the threaded hole.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a mechanism is right to nail on screw which characterized in that: comprises an automatic nail feeding tightening mechanism (1) and a righting component arranged on the front side of the automatic nail feeding tightening mechanism (1); the front end of the automatic screw feeding tightening mechanism (1) is provided with a screw feeding pipe (11) for pushing out a screw (8), so that the screw (8) in the screw feeding pipe (11) can be screwed forwards to pass through the righting component; the screw (8) can be followed both sides and carried screw (8) through righting the subassembly in-process to screw (8), prevents that screw (8) from advancing the in-process to certain side skew at the spiral.

2. The screw centering mechanism of claim 1, wherein: the righting component comprises two cylindrical rollers (6) arranged on the front side of the upper nail tube (11); when the screw (8) is pushed out from the upper nail tube (11), the cylindrical roller (6) can clamp the screw head end of the screw (8); the cylindrical roller (6) can rotate circumferentially, so that the screw (8) is always clamped in the screwing process of the screw (8).

3. The screw centering mechanism of claim 2, wherein: the righting assembly also comprises a guide mounting plate (5) and a scissor arm arranged on the guide mounting plate (5); the scissor arm comprises two connecting rods (9) which are hinged with each other; the two connecting rods (9) are hinged with each other by taking the middle point as a hinge point, and the hinge shaft (91) is movably arranged on the guide mounting plate (5); the cylindrical rollers (6) are arranged at one ends of the two connecting rods (9) far away from the automatic nail feeding tightening mechanism (1), and the other ends of the two connecting rods are connected with elastic pieces used for providing shearing fork force.

4. The screw centering mechanism of claim 3, wherein: a first guide groove (51) and a second guide groove (52) are arranged on the guide mounting plate (5), a hinge shaft (91) of the two connecting rods (9) is movably arranged in the first guide groove (51), and one ends of the two connecting rods (9) close to the automatic nail screwing mechanism (1) are provided with guide columns (92) moving along the second guide groove (52); the first guide groove (51) is a straight line groove parallel to the upper nail tube (11), and the second guide groove (52) is a straight line groove perpendicular to the first guide groove (51) and is arranged on two sides of the first guide groove (51).

5. The screw centering mechanism of claim 4, wherein: a gasket used for adjusting the position of the end part of the connecting rod (9) is sleeved on the guide column (92) between the second guide groove (52) and the end parts of the two connecting rods (9).

6. The screw centering mechanism of claim 3, wherein: the elastic piece is a spring (10), the automatic nail feeding and tightening mechanism (1) is provided with a spring mounting plate (3), and two ends of the spring mounting plate (3) are provided with spring (10) connecting positions; one end of each spring (10) is connected with the end part of the corresponding connecting rod (9), and the other end is connected with the connecting position of the spring (10) on the spring mounting plate (3) in a staggered manner.

7. The screw centering mechanism of claim 2, wherein: the cylindrical rollers (6) are provided with limiting grooves (61) matched with the diameter of the screw (8), and the limiting grooves (61) on the two cylindrical rollers (6) correspond to each other, so that a limiting channel for limiting the deflection of the screw (8) is formed between the cylindrical rollers (6) on the two connecting rods (9).

8. The screw centering mechanism of claim 2, wherein: the cylindrical roller (6) is fixed at the end part of the connecting rod (9) through a bolt (62), and the stainless steel gasket (7) used for adjusting the position of the cylindrical roller (6) is sleeved on the cylindrical roller (6) and the bolt (62) of the connecting rod (9).

9. The screw centering mechanism of claim 1, wherein: the automatic nail feeding tightening mechanism (1) is provided with a fixing ring (2) used for fixing the automatic nail feeding tightening mechanism (1) on the feeding robot.