Device for replacing tool bit of electric screw driver

Abstract

The utility model discloses and provides a device capable of helping a manipulator to replace a tool bit of an electric screw driver, and the device is simple in structure, convenient to operate and capable of rapidly switching different tool bits of the electric screw driver to be replaced according to requirements. The tool bit replacement robot comprises a robot module and a tool bit replacement device, the robot module comprises a robot body and a robot base, the robot body is fixed to the robot base, an electric screwdriver is arranged at the movable tail end of the robot body, and the electric screwdriver is fixed to the robot base. The electric screwdriver is matched with the tool bit replacing device through a tool bit element, the tool bit element is arranged at the end, away from the robot body, of the electric screwdriver in a limiting fit mode, and the tool bit replacing device comprises a tool bit replacing module, a control box and a supporting base. The tool bit replacing module and the control box are both arranged on the supporting base, and the control box is matched with the tool bit replacing module. The device is applied to the field of screw dismounting in the automation industry.

Description

Technical Field

[0001] The utility model is applied to the field of disassembling and assembling screws in the automation industry, and particularly relates to a device for replacing the bit of an electric screwdriver. Background Art

[0002] With the continuous development of the automation of the manufacturing industry, currently, a product often contains one or more screws. In order to reduce costs, customers hope that a robotic arm can carry an electric screwdriver with a replaceable bit to disassemble all the screws on the product. In order to meet the requirements of customers, if a device that can help the robotic arm replace the bit of the electric screwdriver can be designed, and the device has a simple structure, is easy to operate, and can quickly switch different bits to be replaced according to requirements, then the above problems can be well solved. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a device that can help a manipulator replace the bit of an electric screwdriver, and the device has a simple structure, is easy to operate, and can quickly switch different bits to be replaced according to requirements.

[0004] The technical solution adopted by the utility model is as follows: The utility model includes a robot module and a bit replacement device. The robot module includes a robot main body and a robot base. The robot main body is fixed on the robot base. An electric screwdriver is arranged at the movable end of the robot main body. The electric screwdriver is matched with the bit replacement device through a bit element. The bit element is in limit fit at one end of the electric screwdriver far from the robot main body. The bit replacement device includes a bit replacement module, a control box, and a support seat. The bit replacement module and the control box are both arranged on the support seat. The control box is matched with the bit replacement module. Thus, it can be seen that the robot main body drives the electric screwdriver to work. The bit replacement device is arranged within the working stroke of the robot main body. When the bit element needs to be replaced, the robot main body will carry the electric screwdriver close to the bit replacement device. The control box drives the bit replacement module to prepare for replacing the bit element. The support seat plays a role of supporting and limiting the bit replacement module and the control box.

[0005] Further, the bit replacement module includes a bit replacement assembly, a plurality of buffer springs, and a driving assembly. The buffer springs and the driving assembly are both matched with the bit replacement assembly.

[0006] Further, four foot pads for fixing to the ground are arranged at the bottom of the support seat.

[0007] Further, the tool bit replacement assembly includes a jacking plate, a tool bit fixing plate, a plurality of tool bit storage boxes, a support base, a tool bit ejecting plate, and a plurality of support columns. A to-be-replaced tool bit is fixed on each of the plurality of tool bit storage boxes. The plurality of tool bit storage boxes are all rotatably fitted on the tool bit fixing plate. The tool bit fixing plate is fitted with the jacking plate through the support columns. The tool bit ejecting plate is floatingly fitted with the support base through the drive assembly. The tool bit ejecting plate is in limit fit with the to-be-replaced tool bit.

[0008] Further, one end of the support column is fixed on the jacking plate, the other end of the support column is in limit fit with the tool bit fixing plate. The buffer spring is sleeved on the plurality of support columns. Two ends of the buffer spring are respectively in limit fit with the jacking plate and the tool bit fixing plate.

[0009] Further, the drive assembly includes a U-axis motor, a Z-axis motor, a plurality of synchronous pulleys, and idler pulleys. The plurality of synchronous pulleys and the idler pulleys are all arranged below the tool bit fixing plate. The synchronous pulleys are in transmission fit with the tool bit storage boxes. The U-axis motor is arranged on the jacking plate. The movable end of the U-axis motor, the synchronous pulleys, and the idler pulleys are in transmission fit through a synchronous belt. The Z-axis motor is arranged below the support base. The movable end of the Z-axis motor is in fit with the jacking plate.

[0010] Further, the drive assembly further includes a pair of cylinders and a pair of linear guide rails. The pair of cylinders and the pair of linear guide rails are both arranged on two sides of the support base. The movable end of the cylinder is connected to the tool bit ejecting plate. The tool bit ejecting plate is slidably fitted with the linear guide rails through the cylinders. Description of the Drawings

[0011] Figure 1 is a structural view of the present utility model;

[0012] Figure 2 is a structural view of the tool bit replacement device;

[0013] Figure 3 is a structural view of the electric screwdriver;

[0014] Figure 4 is a structural view of the replacement assembly;

[0015] Figure 5 is a structural view of the replacement assembly and the drive assembly. Detailed Embodiments

[0016] Such as Figures 1 to 3As shown in the figure, in this embodiment, the utility model includes a robot module 1 and a tool bit replacement device 2. The robot module 1 includes a robot main body 10 and a robot base 11. The robot main body 10 is fixed on the robot base 11. An electric screwdriver 3 is provided at the movable end of the robot main body 10. The electric screwdriver 3 cooperates with the tool bit replacement device 2 through a tool bit element 30. The tool bit element 30 is in a limiting fit at one end of the electric screwdriver 3 away from the robot main body 10. The tool bit replacement device 2 includes a tool bit replacement module 20, a control box 21, and a support base 22. The tool bit replacement module 20 and the control box 21 are both provided on the support base 22. The control box 21 cooperates with the tool bit replacement module 20. Thus, it can be seen that the robot main body 10 drives the electric screwdriver 3 to work. The tool bit replacement device 2 is arranged within the working stroke of the robot main body 10. When the tool bit element 30 needs to be replaced, the robot main body 10 will carry the electric screwdriver 3 close to the tool bit replacement device 2. The control box 21 drives the tool bit replacement module 20 to make preparations for replacing the tool bit element 30. The support base 22 plays a role in supporting and limiting the tool bit replacement module 20 and the control box 21.

[0017] As Figure 2 and Figure 4 shown in the figure, in this embodiment, the tool bit replacement module 20 includes a tool bit replacement assembly 40, a plurality of buffer springs 41, and a driving assembly 42. The plurality of buffer springs 41 and the driving assembly 42 both cooperate with the tool bit replacement assembly 40. Thus, it can be seen that the tool bit replacement module 20 is composed of the tool bit replacement assembly 40, the plurality of buffer springs 41, and the driving assembly 42. The driving assembly 42 drives the tool bit replacement assembly 40 to move. The buffer springs 41 absorb and protect the tool bit replacement assembly 40 and other components.

[0018] As Figure 2 shown in the figure, in this embodiment, four foot pads 220 for fixing to the ground are provided at the bottom of the support base 22. Thus, it can be seen that the foot pads 220 play a role in fixing the support base 22 to the outside and isolating the influence of external environmental vibrations, improving the accuracy during replacement.

[0019] As Figures 4 to 5As shown, in this embodiment, the tool head replacement assembly 40 includes a jacking plate 50, a tool head fixing plate 51, a plurality of tool head storage boxes 52, a support base 53, a tool head pushing plate 54, and a plurality of support columns 55. A replacement tool head 56 is fixed on each of the plurality of tool head storage boxes 52. The plurality of tool head storage boxes 52 are rotatably fitted on the tool head fixing plate 51. The tool head fixing plate 51 is cooperated with the jacking plate 50 through the support columns 55. The tool head pushing plate 54 is floatingly cooperated with the support base 53 through the drive assembly 42. The tool head pushing plate 54 is in limit cooperation with the replacement tool head 56. Thus, it can be seen that the tool head storage box 52 plays a role in limiting and supporting the replacement tool head 56. The tool head fixing plate 51 plays a role in fixing and supporting the tool head storage box 52. The jacking plate 50 jacks up the tool head fixing plate 51 through the support columns 55, so that the height of the replacement tool head 56 is higher than that of the tool head pushing plate 54. At the same time, the upper surface of the tool head pushing plate 54 is usually higher than the replacement tool head 56, playing a role in protecting and limiting the replacement tool head 56.

[0020] As Figure 4 shown, in this embodiment, one end of the support column 55 is fixed on the jacking plate 50, and the other end of the support column 55 is in limit cooperation with the tool head fixing plate 51. The buffer spring 41 is sleeved on the plurality of support columns 55, and both ends of the buffer spring 41 are in limit cooperation with the jacking plate 50 and the tool head fixing plate 51 respectively. Thus, it can be seen that the support column 55 plays a role in connecting the tool head fixing plate 51 and the jacking plate 50. At the same time, the buffer spring 41 is sleeved on the support column 55. When the angle of the tool head element 30 replaced by the robot body 10 does not match, the electric screwdriver 3 will push the tool head fixing plate 51 to move downward, and the buffer spring 41 can absorb the impact force to protect the electric screwdriver and other mechanisms from being damaged.

[0021] As Figures 4 to 5As shown, in this embodiment, the driving assembly 42 includes a U-axis motor 70, a Z-axis motor 71, a plurality of synchronous pulleys 72 and idler pulleys 73. A plurality of the synchronous pulleys 72 and the idler pulleys 73 are all arranged below the tool head fixing plate 51. The synchronous pulleys 72 are in transmission cooperation with the tool head storage box 52. The U-axis motor 70 is arranged on the lifting plate 50. The movable end of the U-axis motor 70, the synchronous pulleys 72 and the idler pulleys 73 are in transmission cooperation through a synchronous belt 74. The Z-axis motor 71 is arranged below the support base 53. The movable end of the Z-axis motor 71 is in cooperation with the lifting plate 50. Thus, it can be seen that the U-axis motor 70 drives the plurality of synchronous pulleys 72 and the idler pulleys 73 to rotate and cooperate through the synchronous belt 74. At the same time, the rotation of the synchronous pulleys 72 drives the tool head storage box 52 and the tool head to be replaced 56 to rotate. The rotation can enable the tool head to be replaced 56 to be better limited and matched with the position where the tool head element 30 is installed on the electric screwdriver 3. The Z-axis motor 71 drives the lifting plate 50 to lift, so that the height of the tool head to be replaced 56 exceeds the tool head ejecting plate 54 and can contact the position where the tool head element 30 is installed on the electric screwdriver 3.

[0022] As Figures 4 to 5 shown, in this embodiment, the driving assembly 42 further includes a pair of cylinders 75 and a pair of linear guide rails 76. The pair of cylinders 75 and the pair of linear guide rails 76 are both arranged on both sides of the support base 53. The movable end of the cylinder 75 is connected to the tool head ejecting plate 54. The tool head ejecting plate 54 is in sliding cooperation with the linear guide rail 76 through the cylinder 75. Thus, it can be seen that the cylinder 75 drives the tool head ejecting plate 54 to slide along the linear guide rail 76, so that the original tool head element 30 on the electric screwdriver 3 is knocked off by the tool head ejecting plate 54, making preparations for the next contact with the tool head to be replaced 56.

[0023] In this embodiment, the working principle of the present utility model is as follows:

[0024] As Figures 1 to 5As shown, the robot body 10 carries the electric screwdriver 3 to the top of the tool head 56 to be replaced in the tool head replacement module 20, and the robot body 10 moves vertically downward to drive the electric screwdriver 3 to press the tool head top opening plate 54 downward to open the limit lock of the tool head element 30 on the electric screwdriver 3, and then the Z-axis motor 71 works to drive the lifting plate 50 to move toward the electric screwdriver 3, and the tool head fixing plate 51 rises through the support column 55, thereby raising the tool head storage box 52 and the tool head 56 to be replaced, and at the same time, the U-axis motor 70 works to drive the same The step belt 74 causes the synchronous wheel 72 to rotate, and the rotation of the synchronous wheel 72 drives the tool head storage box 52 and the tool head 56 to be replaced to rotate. The cylinder 75 drives the tool head push-opening plate 54 to slide along the linear guide rail 76 to remove the existing tool head element 30 of the electric screwdriver 3. The tool head fixing plate 51 lifts the tool head 56 to be replaced onto the electric screwdriver 3 under the elastic potential energy of the buffer spring 41. The tool head element 30 on the electric screwdriver 3 is replaced, and the robot body 10 carries the replaced electric screwdriver 3 to work, and the cycle is repeated in sequence.

[0025] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.

Claims

1. A device for replacing a bit of an electric screwdriver, characterized in that: The invention comprises a robot module (1) and a tool head replacement device (2), wherein the robot module (1) comprises a robot body (10) and a robot base (11), wherein the robot body (10) is fixed on the robot base (11), and an electric screwdriver (3) is arranged on the movable end of the robot body (10), wherein the electric screwdriver (3) cooperates with the tool head replacement device (2) via a tool head element (30), wherein the tool head element (30) is limitedly engaged with an end of the electric screwdriver (3) away from the robot body (10), and wherein the tool head replacement device (2) comprises a tool head replacement module (20), a control box (21) and a support seat (22), wherein the tool head replacement module (20) and the control box (21) are both arranged on the support seat (22), and the control box (21) cooperates with the tool head replacement module (20).

2. The device for replacing a bit of an electric screwdriver according to claim 1, characterized in that: The tool head replacement module (20) comprises a tool head replacement assembly (40), a plurality of buffer springs (41) and a drive assembly (42); the buffer springs (41) and the drive assembly (42) both cooperate with the tool head replacement assembly (40).

3. The device for replacing a bit of an electric screwdriver according to claim 1, characterized in that: The bottom of the support seat (22) is provided with four foot pads (220) for fixing to the ground.

4. The device for replacing a bit of an electric screwdriver according to claim 2, characterized in that: The tool head replacement assembly (40) comprises a lifting plate (50), a tool head fixing plate (51), a plurality of tool head storage boxes (52), a support base (53), a tool head opening plate (54) and a plurality of support columns (55); a tool head (56) to be replaced is fixed on each of the tool head storage boxes (52); each of the tool head storage boxes (52) is rotatably engaged with the tool head fixing plate (51); the tool head fixing plate (51) is engaged with the lifting plate (50) via a plurality of support columns (55); the tool head opening plate (54) is floatingly engaged with the support base (53) via the driving assembly (42); and the tool head opening plate (54) is limitedly engaged with the tool head (56) to be replaced.

5. The device for replacing a bit of an electric screwdriver according to claim 4, characterized in that: One end of the support column (55) is fixed on the lifting plate (50), and the other end of the support column (55) is limitedly matched with the cutter head fixing plate (51). The buffer spring (41) is collared on a plurality of the support columns (55), and the two ends of the buffer spring (41) are respectively limitedly matched with the lifting plate (50) and the cutter head fixing plate (51).

6. The device for replacing a bit of an electric screwdriver according to claim 4, characterized in that: The driving assembly (42) comprises a U-axis motor (70), a Z-axis motor (71), a plurality of synchronous wheels (72) and an idler wheel (73); the plurality of synchronous wheels (72) and the idler wheel (73) are all arranged below the tool head fixing plate (51); the synchronous wheels (72) are in driving cooperation with the tool head storage box (52); the U-axis motor (70) is arranged on the lifting plate (50); the movable end of the U-axis motor (70), the synchronous wheels (72) and the idler wheel (73) are in driving cooperation via a synchronous belt (74); the Z-axis motor (71) is arranged below the supporting base (53); the movable end of the Z-axis motor (71) is in driving cooperation with the lifting plate (50).

7. The device for replacing a bit of an electric screwdriver according to claim 4, characterized in that: The driving assembly (42) further comprises a pair of cylinders (75) and a pair of linear guide rails (76), wherein the pair of cylinders (75) and the pair of linear guide rails (76) are both arranged on both sides of the supporting base (53), and the movable ends of the cylinders (75) are connected to the cutter head top opening plate (54), and the cutter head top opening plate (54) is slidably matched with the linear guide rails (76) through the cylinders (75).

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