Automatic tightening mechanism for multiple screws

Abstract

The utility model discloses a multi-screw automatic tightening mechanism which comprises a whole set of module installation base, a Z-axis direction guide rail is installed at the front end of the whole set of module installation base, and the mechanism is used for DP-EPS electric power steering gear sensor protection cover automatic assembling equipment. According to the mechanism, the vertically-installed servo electric cylinder is matched with the guide rail to achieve compatibility of the height direction sizes of sensor protection covers on different steering gears, the X servo shaft and the Y servo shaft are used for achieving different compatibility of multiple screws on the planes of the sensor protection covers, and the automatic tightening unit is matched with an automatic screw supply system for screws to achieve different heights. According to the automatic tightening process for the multiple screws at different positions, the X-axis servo unit, the Y-axis servo unit, the Y-axis servo unit and the Z-axis servo unit are matched with the automatic screw gun and the screw supply system to achieve the process environment where the multiple non-evenly-distributed screws are required to be tightened in an automatic production line, and process control and product process quality improvement are achieved through automatic integration.

Description

Technical Field

[0001] The utility model belongs to the technical field related to a multiple screw automatic tightening mechanism, and in particular relates to a multiple screw automatic tightening mechanism. Background Art

[0002] An automatic tightening mechanism for multiple screws is a device used to automatically tighten multiple screws. It usually includes one or more electrically or pneumatically driven tightening heads for screwing the screws into the workpiece. This mechanism is usually used in the automated assembly process on the production line, which can improve production efficiency and reduce labor costs. The automatic tightening mechanism for multiple screws usually has a precise control system that can be adjusted according to different screw sizes and materials to ensure the accuracy and stability of tightening.

[0003] In the production process of DP-EPS electric power steering, different models of electric power steering sensor protection covers may have different height dimensions, and the sensor protection covers cannot achieve accurate and flexible automatic assembly. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic tightening mechanism for multiple screws to solve the problem raised in the above background technology that in the production process of DP-EPS electric power steering, different models of electric power steering sensor protection covers may have different height dimensions and the sensor protection cover cannot achieve accurate and flexible automatic assembly.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic tightening mechanism for multiple screws, including a complete set of module mounting bases, wherein the complete set of module mounting bases is provided with a Z-axis direction guide rail at the front end position, wherein the Z-axis direction guide rail enables the X-axis direction guide rail installed at the front end position to move up and down, an X-axis direction connecting moving block that can move left and right is installed at the front end position of the X-axis direction guide rail, an inspection camera is installed at the rear end position of the X-axis direction guide rail, a lens assembly is installed at the upper end position of the inspection camera, an X-direction moving electric cylinder is installed at the left end position of the X-axis direction guide rail, and the front end position of the Z-axis direction guide rail is located at the bottom A Y-direction moving electric cylinder is installed at the position, a Y-axis direction guiding rail is installed at the right end position of the Y-direction moving electric cylinder, a Y-direction connecting moving block which can move forward and backward is installed at the upper end position of the Y-axis direction guiding rail, an automatic screw gun tightening module is installed at the inner end surface position of the Y-axis direction guiding rail, a nameplate is arranged at the rear end position of the automatic screw gun tightening module, a display screen is arranged at the upper end position of the automatic screw gun tightening module, a nail suction tube is installed at the lower end position of the automatic screw gun tightening module, an automatic nail supply tube connected to an external nail supply device is installed at the front end position of the automatic screw gun tightening module, and a mounting hole is arranged at the front end position of the mounting base of the whole set of modules.

[0006] Preferably, the X-direction connecting moving block can move left and right along the front end position of the guide rail in the X-axis direction.

[0007] Preferably, the X-direction moving electric cylinder enables the X-direction connecting moving block to move.

[0008] Preferably, the Z-axis direction guide rail enables the X-axis direction guide rail installed at the front end position to move up and down.

[0009] Preferably, the Z-axis direction guide rail is installed at the front end position of the entire module mounting base.

[0010] Preferably, the Y-direction connecting moving block can move forward and backward at the upper end position of the Y-axis direction guiding rail.

[0011] Preferably, the Y-direction moving electric cylinder drives the Y-direction connecting moving block to move.

[0012] Preferably, the nail suction tube absorbs the bolts, and the automatic nail supply tube is connected to an external nail supply device to supply the screws to the tightening position.

[0013] Compared with the prior art, the utility model provides a multiple screw automatic tightening mechanism, which has the following beneficial effects:

[0014] 1. This mechanism is used for automatic assembly equipment of sensor protection cover of DP-EPS electric power steering gear. This mechanism uses vertically mounted servo electric cylinder with guide rail to achieve compatibility of height dimensions of sensor protection cover on different steering gears, and uses two XY servo axes to achieve different compatibility of multiple screws on the plane of sensor protection cover. The automatic tightening unit is used with the automatic screw supply system to realize the automatic tightening process of multiple screws at different heights and positions. This process can be flexibly integrated into various automated production lines. The XYZ three-axis servo unit is used with the automatic screw gun and the screw supply system to realize the process environment in the automated production line that requires tightening of multiple unevenly distributed screws. The process control and product process quality improvement are realized through automated integration.

[0015] 2. The pallet on the production line flows to the current workstation. After the product is automatically detected and in place, the Z-axis servo electric cylinder will drive the entire mechanism to move down to the first screw tightening position on the sensor protection cover. During the movement of the Z-axis, the XY-axis electric cylinder will also move points synchronously in the plane. At the same time, the automatic nail feeder will also supply nails to the front end of the screw gun. When the servo electric cylinder is in place, the first screw will be automatically tightened. After that, the XYZ three-axis electric cylinder will use the screw gun to tighten the remaining two screws in turn, and the nails will be automatically supplied synchronously. After the three screws are automatically tightened, the Z-axis will pull the entire mechanism back to a high position to ensure the outflow of pallets on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the structure of a multiple screw automatic tightening mechanism.

[0017] Figure 2 The utility model is a front view structural schematic diagram of a multiple screw automatic tightening mechanism.

[0018] In the figure: 1. X-axis direction guide rail; 2. Automatic screw gun tightening module; 3. Y-axis direction guide rail; 4. Y-direction connecting moving block; 5. Automatic nail supply tube connected to external nail supply device; 6. Nail suction tube; 7. Z-axis direction guide rail; 8. Y-direction moving electric cylinder; 9. X-direction moving electric cylinder; 10. X-direction connecting moving block; 11. The whole module installation base; 12. Detection camera; 13. Lens assembly; 14. Nameplate; 15. Display screen; 16. Mounting hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] The utility model provides Figure 1-2 The automatic tightening mechanism for multiple screws shown in the figure includes a complete set of module mounting bases 11, the complete set of module mounting bases 11 is installed with a Z-axis direction guide rail 7 at the front end position, the Z-axis direction guide rail 7 enables the X-axis direction guide rail 1 installed at the front end position to move up and down, an X-axis direction connecting moving block 10 that can move left and right is installed at the front end position of the X-axis direction guide rail 1, a detection camera 12 is installed at the rear end position of the X-axis direction guide rail 1, a lens assembly 13 is installed at the upper end position of the detection camera 12, an X-direction moving electric cylinder 9 is installed at the left end position of the X-axis direction guide rail 1, and a Y-direction moving electric cylinder 9 is installed at the front of the Z-axis direction guide rail 7 at the lower position. A movable electric cylinder 8, a Y-axis guide rail 3 is installed at the right end of the Y-axis movable electric cylinder 8, a Y-axis connecting movable block 4 which can move forward and backward is installed at the upper end of the Y-axis guide rail 3, an automatic screw gun tightening module 2 is installed at the inner end surface of the Y-axis guide rail 3, a nameplate 14 is provided at the rear end of the automatic screw gun tightening module 2, a display screen 15 is provided at the upper end of the automatic screw gun tightening module 2, a nail suction tube 6 is installed at the lower end of the automatic screw gun tightening module 2, an automatic nail supply tube connected to an external nail supply device 5 is installed at the front end of the automatic screw gun tightening module 2 at a lower position, and a mounting hole 16 is provided at the front end of the entire module mounting base 11.

[0021] The mechanism uses a vertically mounted servo electric cylinder in conjunction with a guide rail to achieve compatibility with the height dimensions of the sensor protection cover on different steering gears, and uses the two XY servo axes to achieve different compatibility of multiple screws on the plane of the sensor protection cover. The automatic tightening unit is combined with the automatic screw feeding system to achieve the automatic tightening process of multiple screws at different heights and positions. This process can be flexibly integrated into various automated production lines. The XYZ three-axis servo unit is combined with an automatic screw gun and a screw feeding system to achieve the process environment in the automated production line that requires tightening of multiple unevenly distributed screws.

[0022] like Figure 1 and Figure 2 As shown, the X-direction connecting moving block 10 can move left and right along the front end position of the X-axis direction guide rail 1, the X-direction moving electric cylinder 9 enables the X-direction connecting moving block 10 to move, the Z-axis direction guide rail 7 enables the X-axis direction guide rail 1 installed at the front end position to move up and down, the Z-axis direction guide rail 7 is installed at the front end position of the entire module mounting base 11, the Y-direction connecting moving block 4 can move forward and backward at the upper end position of the Y-axis direction guide rail 3, the Y-direction moving electric cylinder 8 drives the Y-direction connecting moving block 4 to move, the nail suction tube 6 absorbs the bolts, and the automatic nail supply tube connected to the external nail supply device 5 provides the screws to the tightening position.

[0023] The pallet on the production line flows to the current workstation. After automatically detecting that the product is in place, the Z-axis servo electric cylinder will drive the entire mechanism down to the first screw tightening position on the sensor protection cover. During the movement of the Z-axis, the XY-axis electric cylinder will also move points synchronously in the plane. At the same time, the automatic nail feeder will also supply nails to the front end of the screw gun. When the servo electric cylinder is in place, the first screw is automatically tightened. After that, the XYZ three-axis electric cylinder will use the screw gun to tighten the remaining two screws in turn, and the nails are automatically supplied synchronously. After the three screws are automatically tightened, the Z-axis pulls the entire mechanism back to a high position to ensure the outflow of pallets on the production line.

[0024] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multiple screw automatic tightening mechanism, characterized in that: The invention comprises a complete module mounting base (11), wherein the complete module mounting base (11) is provided with a Z-axis direction guide rail (7) at the front end position, wherein the Z-axis direction guide rail (7) enables an X-axis direction guide rail (1) installed at the front end position to move up and down, an X-axis direction connecting moving block (10) which can move left and right is installed at the front end position of the X-axis direction guide rail (1), an inspection camera (12) is installed at the rear end position of the X-axis direction guide rail (1), a lens assembly (13) is installed at the upper end position of the inspection camera (12), an X-axis direction moving electric cylinder (9) is installed at the left end position of the X-axis direction guide rail (1), and a Y-axis direction moving electric cylinder (8) is installed at the front lower position of the Z-axis direction guide rail (7), wherein the Y-axis direction connecting moving block (10) can move left and right. A Y-axis direction guide rail (3) is installed at the right end of the movable electric cylinder (8); a Y-axis direction connecting movable block (4) that can move forward and backward is installed at the upper end of the Y-axis direction guide rail (3); an automatic screw gun tightening module (2) is installed at the inner end surface of the Y-axis direction guide rail (3); a nameplate (14) is provided at the rear end of the automatic screw gun tightening module (2); a display screen (15) is provided at the upper end of the automatic screw gun tightening module (2); a nail suction tube (6) is installed at the lower end of the automatic screw gun tightening module (2); an automatic nail supply tube connected to an external nail supply device (5) is installed at the front end of the automatic screw gun tightening module (2) at a lower position; and a mounting hole (16) is provided at the front end of the entire module mounting base (11).

2. The automatic tightening mechanism for multiple screws according to claim 1, characterized in that: The X-direction connecting moving block (10) can move left and right along the front end position of the X-axis direction guide rail (1).

3. The automatic tightening mechanism for multiple screws according to claim 2, characterized in that: The X-direction moving electric cylinder (9) enables the X-direction connecting moving block (10) to move.

4. The automatic screw tightening mechanism according to claim 1, characterized in that: The Z-axis direction guide rail (7) enables the X-axis direction guide rail (1) installed at the front end position to move up and down.

5. The automatic tightening mechanism for multiple screws according to claim 4, characterized in that: The Z-axis direction guide rail (7) is installed at the front end of the entire module installation base (11).

6. The automatic tightening mechanism for multiple screws according to claim 1, characterized in that: The Y-direction connecting moving block (4) can move forward and backward at the upper end position of the Y-axis direction guide rail (3).

7. The automatic tightening mechanism for multiple screws according to claim 6, characterized in that: The Y-direction moving electric cylinder (8) drives the Y-direction connecting moving block (4) to move.

8. The automatic tightening mechanism for multiple screws according to claim 1, characterized in that: The nail suction tube (6) sucks the bolts, and the automatic nail supply tube is connected to the external nail supply device (5) to supply the screws to the tightening position.

Images