CN111906522A

CN111906522A - Clamping device

Info

Publication number: CN111906522A
Application number: CN202010709189.7A
Authority: CN
Inventors: 石国梁; 刘晓磊; 孟祥鹏; 郑际俊; 李振
Original assignee: Yuanqi Industrial Technology Qingdao Co ltd; Yuanqi Industrial Technology Co ltd
Current assignee: Yuanqi Industrial Technology Qingdao Co ltd; Yuanqi Industrial Technology Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2020-11-10

Abstract

The invention provides a clamping device, which comprises a fixed plate, a lifting mechanism, a rotating mechanism and a clamping mechanism, wherein the lifting mechanism is arranged on the fixed plate, the rotating mechanism is fixed with an output shaft of the lifting mechanism and driven by the rotating mechanism to lift along the fixed plate, the clamping mechanism comprises an air cylinder and a clamping jaw, a rotating joint comprises an outer shell and an inner shaft, an air inlet interface and an air outlet interface are arranged on the outer shell, the inner shaft is provided with an air passage which is respectively communicated with an air chamber of the air cylinder and the air inlet interface and the air outlet interface of the outer shell, one end of the inner shaft is fixed with the output shaft of the rotating mechanism, and the other end of the inner shaft is. The clamping device provided by the invention realizes automatic clamping and unlimited angular rotation of the insert, and the pipeline is not wound.

Description

Clamping device

Technical Field

The invention belongs to the technical field of automatic assembly line bodies of electric motors, and particularly relates to a clamping device applied in a production process.

Background

At present, the assembly of a single motor mainly depends on manual assembly, in the process of assembling a screw rod and an insert, the first step of the assembly of the insert is to complete the matching of an insert inner hole and a screw rod shaft, the insert inner hole is a D-shaped hole and a non-standard circle, the corresponding screw rod shaft is a non-cylindrical shaft body, the assembly is carried out in a manual assembly mode on site, during installation, the screw rod and the insert are held by hands, the relative angle of the two parts is adjusted, the screw rod shaft and the insert inner hole can be aligned, the production speed is unstable, the efficiency cannot be guaranteed, the assembly quality is different from person to person, and the product quality is seriously. To achieve automatic installation of the insert, it is necessary to enable the insert to be clamped by the clamping jaws and to be rotated at an unlimited angle. The clamping jaw is driven by the cylinder, and when the clamping jaw drove the inserts rotation, can lead to the cylinder trachea to produce the winding constraint, and it is rotatory to influence the inserts, can't realize automatic equipment.

Disclosure of Invention

The invention mainly aims to solve the problems and provides a clamping device which can realize automatic clamping and unlimited angular rotation of an insert and can prevent pipelines from winding.

In order to achieve the purpose, the invention provides a clamping device, which adopts the technical scheme that:

the utility model provides a press from both sides and get device, includes the fixed plate, still includes elevating system, rotary mechanism and fixture, elevating system installs on the fixed plate, rotary mechanism with elevating system's output shaft is fixed and follows under its drive the fixed plate goes up and down, fixture includes cylinder and clamping jaw, and rotary joint includes shell and interior axle, be provided with the interface of admitting air and giving vent to anger the interface on the shell, interior axle be equipped with respectively with the air chamber of cylinder with the interface of admitting air of shell, the gas circuit of the interface intercommunication of giving vent to anger, interior axle one end with rotary mechanism's output shaft is fixed, the other end with fixture is fixed.

Further, elevating system includes lift cylinder, cylinder mounting panel and sliding mounting panel, the cylinder pass through the cylinder mounting panel with the top/upper portion of fixed plate is fixed, the output shaft of cylinder with sliding mounting panel is fixed.

Further, the rotating mechanism comprises a motor installed on a second installation plate, a first installation plate is arranged at the top/upper part of the sliding installation plate, and the first installation plate is connected with the second installation plate through a guide pillar.

Furthermore, a vertical plate is arranged on the second mounting plate, a linear guide rail is arranged on the front end face of the sliding block mounting plate, and the vertical plate slides up and down along the linear guide rail.

Furthermore, an elastic component which can enable the clamping jaw to be in soft contact with the material to be clamped is arranged on the guide post.

Furthermore, the bottom of the guide pillar is fixed with the second mounting plate, and the top of the guide pillar is communicated with a linear bearing positioned on the top surface of the first mounting plate after passing through the through hole of the first mounting plate.

Furthermore, the top of the guide post is provided with a limit nut which prevents the guide post from being separated from the linear bearing.

Furthermore, a photoelectric switch is arranged on the fixing plate.

Further, rotary mechanism includes the motor, the output shaft of motor pass through the shaft coupling with rotary joint is connected.

Furthermore, the rotary joint comprises a first connecting shaft and a second connecting shaft which are different in diameter and are sleeved with each other, the top of the first connecting shaft is fixed with the output shaft of the rotary mechanism, the bottom of the first connecting shaft is sleeved with the top of the second connecting shaft, and the bottom of the second connecting shaft is connected with the clamping mechanism.

In summary, compared with the prior art, the clamping device provided by the invention has the advantages that by arranging the rotary joint with a special structure, the clamping jaw can realize an unlimited rotation function, the air pipe required by the air cylinder is connected with the shell of the rotary joint, the photoelectric switch is arranged at the bottom of the rotary mechanism, the air pipe and the circuit do not participate in rotation, and winding is not generated; a linear guide rail and an elastic component are arranged between the rotating mechanism and the lifting mechanism, so that the clamping jaw can be prevented from being in hard contact with the insert to damage the clamping device and the insert; the lifting mechanism can give way other materials on the line body, so that production interference is prevented, and production safety is improved.

Description of the drawings:

FIG. 1: the invention provides a schematic structure diagram of a clamping device;

FIG. 2: the invention provides a schematic connection diagram of a rotary joint and a motor in a clamping device;

the air cylinder comprises an air cylinder 1, an air cylinder mounting plate 2, a fixing plate 3, a sliding mounting plate 4, a first linear guide rail 5, a second linear guide rail 6, a spring 7, a guide pillar 8, a motor 9, a coupler 10, a connecting column 11, a second mounting plate 12, a third mounting plate 13, a rotary joint 14, a fourth mounting plate 15, a clamping jaw air cylinder 16, a clamping jaw 17, an insert 18, a photoelectric switch 19, a photoelectric switch mounting piece 20, a linear bearing 21, a small-diameter connecting shaft 22, a large direct connecting shaft 23, a motor mounting plate 24, a shell 25, an air inlet interface 26, an air outlet interface 27 and a first mounting plate 28.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description.

The utility model provides a clamping device, including fixed plate 3, still include elevating system, rotary mechanism and fixture, elevating system installs on fixed plate 3, rotary mechanism is fixed and goes up and down along fixed plate 3 under its drive with elevating system's output shaft, fixture includes clamping jaw cylinder 16 and clamping jaw 17, rotary joint 14 includes shell 25 and interior axle, be provided with air inlet interface 26 and interface 27 of giving vent to anger on the shell 25, interior axle be equipped with respectively with clamping jaw cylinder 16's air chamber and shell 25's air inlet interface 26, the gas circuit of interface 27 intercommunication gives vent to anger, interior axle one end is fixed with rotary mechanism's output shaft, the other end is fixed with fixture.

In this embodiment, taking an assembly of an insert 18 of a screw assembly and a screw as an example, a specific structure and a using method of a clamping device provided by the present invention are described, where the clamping device includes a lifting mechanism, a clamping mechanism and a rotating mechanism, the lifting mechanism includes a cylinder 1, as shown in fig. 1, a first linear guide rail 4 is disposed on a front end surface (in an orientation shown in fig. 1, the same direction is used after the front end surface is used) of a fixed plate 3, a cylinder mounting plate 2 is disposed on an upper portion or a top portion of the fixed plate, the cylinder 1 is fixed on the top portion of the cylinder mounting plate 2, an output shaft passes through a through hole in the cylinder mounting plate 2 and then is fixed with a sliding mounting plate 5, a back portion of the sliding mounting plate 5 is matched with the first linear guide.

The first mounting plate 28 of the 'concave' type structure is fixed with the top or upper part of the sliding mounting plate 5, the top surfaces of the protruding structures at the left end and the right end of the first mounting plate 28 are respectively provided with a linear bearing 21, the guide post 8 penetrates through a bearing hole of the linear bearing 21 and a through hole at the corresponding part of the first mounting plate 28 and then is fixed with the top surface of the second mounting plate 12, in order to prevent the guide post 8 from falling off from the through hole of the first mounting plate 28 and the linear bearing 21, the top of the guide post 8 is provided with a limit nut, the second mounting plate 12 and the sliding mounting plate 5 are installed together through the guide posts 8 at the two sides of the first mounting plate 28, the front end surface of the sliding mounting plate 5 is provided with a second linear guide rail 6, the rear end of the top surface of the second mounting plate 12 is fixed with a vertical plate, the back surface.

The rotating mechanism comprises a micro direct current motor 9 which is installed on the top surface of the second installation plate 12, in the embodiment, a plurality of connection columns 11 are arranged on the top surface of the second installation plate 12, the motor installation plate 24 is fixed on the tops of the connection columns 11, the motor 9 is fixed on the motor installation plate 24, and an output shaft of the motor 9 penetrates through a through hole of the motor installation plate 24 and then is connected with a coupler installed on the second installation plate 12. From last to down, third mounting panel 13, rotary joint 14, fourth mounting panel 15 are fixed each other end to end in proper order, and the top of third mounting panel 13 is fixed with the bottom of second mounting panel 12, and fixture is fixed to the bottom of fourth mounting panel 15, and fixture includes centre gripping cylinder 16 and clamping jaw 17.

As shown in fig. 2, the small diameter connecting shaft 22 is inserted into the central hole of the coupling 10 and is fixed by a set screw, the top of the large diameter connecting shaft 23 is sleeved on the tail of the small diameter connecting shaft 22 and is fixed by a fastening screw, the tail is connected with the rotary joint 14, a stop pin (not shown) of the large diameter connecting shaft 23 is matched with a pin hole of the rotary joint 14 and is locked by a screw, so that the coupling 10 and the rotary joint 14 are mutually mounted, and the rotary joint 14 is driven by the coupling 10 to rotate.

As shown in fig. 1 and 2, an air inlet port 26 and an air outlet port 27 are arranged on the outer shell 25 and are respectively connected with an air supply pipe and an air return pipe in a production site, the air inlet port 26 and the air outlet port 27 are communicated with the air hole of the inner shaft directly or through an air path inside the outer shell 25, and the air hole of the inner shaft is communicated with the air chamber of the clamping jaw air cylinder 16 through the air path to provide an air power source for the clamping jaw air cylinder 16 and return air. The clamping jaw air cylinder 16 is connected with the clamping jaw 17 in a conventional mode, and the clamping jaw 17 is controlled to open and close so as to clamp materials. The clamping jaw cylinder 16 is free of any air pipe and line and can rotate freely, and the wire and pipe winding is not needed to be worried about.

The spring 7 is sleeved on the guide post 8 between the first mounting plate 28 and the second mounting plate 12, in practical application, any elastic component capable of being compressed and reset can be arranged between the guide post 8 or the guide post 8 and the second mounting plate 12, when the cylinder 1 drives the rotating mechanism and the clamping device to move downwards, due to production differences, in order to improve the success rate of clamping the insert 18 by the clamping jaw 17, the maximum stroke of the cylinder 1 is larger than or equal to the distance between the clamping jaw 17 and the insert 18, when the elastic component is in contact with the insert 18, the elastic component can enable the clamping jaw 17 to be in soft contact with the insert 18 or a workbench table surface where the insert 18 is located, and the damage to the connection between each component caused by impact generated by hard contact is avoided. Photoelectric switch 19 is fixed respectively at fixed plate 3 one side or both sides through photoelectric switch installation piece 20, detects the centre gripping lift and the rotation operation of clamping jaw 17 and inserts 18, through setting up photoelectric switch 19 on fixed plate 3, does not have the circuit with fixture and is connected, further prevents that fixture from having the circuit to twine when rotatory.

During assembly production, the insert 18 is clamped and placed on the table top of the workbench by a manipulator or other automatic assembly devices, the cylinder 1 acts to drive the whole device to move downwards along the first linear guide rail 4 on the fixing plate 3, the photoelectric switch 19 detects the position of the insert 18 and sends a control signal to control the action of the clamping jaw cylinder 16 and open the clamping jaw 17, or the clamping jaw cylinder 16 simultaneously controls the clamping jaw 17 to open while the whole device moves downwards, after the output shaft of the cylinder 1 moves downwards to a low position, the clamping jaw 17 is contacted with the insert 18, and because the running distance of the cylinder 1 is greater than the distance between the clamping jaw 17 and the insert 18, the clamping jaw 17 of the table top of the workbench generates upward pushing rejection force to compress the spring 7, so that the second mounting plate 1 drives the rotating and clamping mechanism to move upwards for a certain distance along the second linear guide rail 6. After the photoelectric switch 19 detects that the clamping jaw 17 is effectively contacted with the insert 18, or the clamping jaw cylinder 16 automatically controls the clamping jaw 17 to be closed to clamp the insert 18, the photoelectric switch 19 sends a signal to control the cylinder 1 to withdraw the output shaft to drive the rotating mechanism and the clamping mechanism to move upwards, when the rotating mechanism and the clamping mechanism move upwards to the initial high position, the insert can be driven to a proper position by a transverse moving mechanism (not shown in the figure), the screw rod is assembled with the screw rod, the screw rod keeps the position after the screw rod is in place, the end surface of the screw rod is contacted with the end surface of the insert 18, and further compress the spring 7 to make the spring 7 still in a compressed state, the motor 9 acts to drive the insert 18 to rotate, when the D-shaped hole of the insert 18 rotates to a position matched with the D-shaped end face of the screw rod, the compressed spring 9 automatically drives the insert 19 to move under the action of self elasticity, so that the end part of the screw rod is embedded into the D-shaped hole of the insert, and the preliminary assembly of the screw rod and the insert 18 is completed. During assembly, the spring 7 can provide initial force during assembly while achieving soft contact between the clamping jaw 17 and the insert 18.

Furthermore, the clamping device provided by the embodiment also comprises a transverse moving mechanism, the transverse moving mechanism comprises a transverse moving base plate, a transverse moving cylinder and a transverse moving cylinder mounting seat, the transverse moving base plate is arranged in parallel with the fixed plate 3, the transverse moving cylinder mounting seat is fixed at one end of the transverse moving base plate, a transverse positioning seat is fixed at the other end of the transverse moving base plate, a transverse moving linear slide rail is laterally mounted on the transverse moving base plate, the transverse moving cylinder is mounted on the transverse moving base plate through the transverse moving cylinder mounting seat, an output shaft of the transverse moving cylinder penetrates through a through hole of the transverse moving cylinder mounting seat and extends towards the direction of the transverse positioning seat, the end part fixed plate 3 of the output shaft is connected, a limiting block is mounted on one side of the fixed plate 3 facing the transverse moving cylinder mounting seat, a buffer cylinder and a transverse positioning screw are respectively mounted on the transverse positioning seat and the transverse moving cylinder mounting, the position of the gripping device moving left and right, i.e. the starting position and the end position of the fixed plate 3, and thus the lateral movement distance of the material insert 18, are defined, respectively. The buffer cylinder can adjust the length of the stop time of the fixed plate 3 in the braking process, so that the fixed plate 3 is prevented from being suddenly stopped due to too short brake stop time to generate impact/impact on the transverse moving cylinder mounting seat and the transverse positioning seat, the production rhythm is controlled, the device is prevented from being damaged, and the initial position and the final position can be finely adjusted by adjusting the length of the transverse positioning screw. The fixed plate can be fixed with the drag chain through the bracket, so that the whole device can stably move transversely.

The lifting and transverse moving device provided by the embodiment further comprises the magnetic switches, the magnetic switches are all used for in-place detection in the whole action process, the in-place detection is carried out after each action is finished, the next action can be carried out after the position is determined, the lifting and transverse moving device is propelled once, the whole process is stable and reliable, and the purpose of stable moving and carrying can be achieved in a controllable mode.

Similar solutions can be derived as described above in connection with the given solution content. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a press from both sides and get device, includes the fixed plate, its characterized in that: the clamping mechanism comprises a cylinder and a clamping jaw, a rotary joint comprises a shell and an inner shaft, an air inlet interface and an air outlet interface are arranged on the shell, an air chamber of the cylinder, an air inlet interface and an air outlet interface of the shell are communicated with an air path respectively, one end of the inner shaft is fixed with the output shaft of the rotary mechanism, and the other end of the inner shaft is fixed with the clamping mechanism.

2. A grasping apparatus as claimed in claim 1, wherein: the lifting mechanism comprises a lifting cylinder, a cylinder mounting plate and a sliding mounting plate, the cylinder is fixed with the top/upper part of the fixing plate through the cylinder mounting plate, and an output shaft of the cylinder is fixed with the sliding mounting plate.

3. A grasping apparatus as claimed in claim 2, wherein: the rotating mechanism comprises a motor installed on a second installation plate, a first installation plate is arranged on the top/upper portion of the sliding installation plate, and the first installation plate is connected with the second installation plate through a guide pillar.

4. A grasping apparatus as claimed in claim 3, wherein: the novel sliding block mounting structure is characterized in that a vertical plate is arranged on the second mounting plate, a linear guide rail is arranged on the front end face of the sliding block mounting plate, and the vertical plate slides up and down along the linear guide rail.

5. A grasping apparatus as claimed in claim 4, wherein: and the guide post is provided with an elastic component which can enable the clamping jaw to be in soft contact with the material to be clamped.

6. A grasping apparatus as claimed in claim 4, wherein: the bottom of the guide post is fixed with the second mounting plate, and the top of the guide post is communicated with the linear bearing positioned on the top surface of the first mounting plate after passing through the through hole of the first mounting plate.

7. A grasping apparatus as claimed in claim 6, wherein: and the top of the guide post is provided with a limiting nut for preventing the guide post from being separated from the linear bearing.

8. A grasping apparatus as claimed in claim 6, wherein: and a photoelectric switch is arranged on the fixing plate.

9. A grasping apparatus as claimed in claim 1, wherein: the rotating mechanism comprises a motor, and an output shaft of the motor is connected with the rotating joint through a coupler.

10. A grasping apparatus as claimed in claim 9, wherein: the shaft coupling is connected with the inner shaft through the first connecting shaft and the second connecting shaft which are sleeved and connected, and drives the inner shaft to rotate.