Multi-head tightening device

Abstract

The utility model provides a multi-head tightening device which comprises an installation frame, a top plate is arranged on the installation frame, a plurality of driving motors are fixedly installed on the top plate, and each driving motor is connected with a tightening head located below the top plate through a telescopic steering piece. A middle plate located below the top plate is further arranged on the mounting frame, a through frame is arranged on the middle plate, all the tightening heads vertically penetrate through the through frame, and an adjusting assembly for adjusting the transverse and longitudinal positions of the tightening heads is further mounted on the middle plate; the top plate is further provided with an elastic pressing rod vertically penetrating through the through frame. The multi-head tightening device solves the problem that in the prior art, multi-head tightening needs to accurately position a workpiece, time is consumed, and efficiency is low.

Description

Technical Field

[0001] The utility model relates to the technical field of tightening equipment, in particular to a multi-head tightening device. Background Art

[0002] The use of tightening equipment to tighten fasteners can improve efficiency. Tightening equipment generally includes portable and fixed types. The fixed type is suitable for tightening the same workpiece (such as bolt tightening). Generally, the fixed type of tightening equipment includes a mounting frame, the workpiece is placed on the mounting frame, and a drive motor is also installed on the mounting frame, and a tightening head driven by the drive motor to rotate (a floating tightening head with a spring inside, which can tighten or withdraw from the required tightening position). The workpiece is located below the tightening head. The mounting frame can be raised and lowered or the tightening head can be extended and retracted so that the tightening head can be aligned with the tightening position on the workpiece, and then the tightening operation is performed. A single tightening head corresponds to a single tightening position. In the prior art, for workpieces with multiple tightening positions on the same workpiece, the positions of the workpieces can be rotated and tightened in sequence, which takes a long time. The number of tightening heads can also be increased to correspond to multiple tightening positions, thereby achieving faster tightening (i.e., multi-head tightening). However, this requires precise alignment of the workpiece (i.e., the workpiece is positioned so that the tightening position is aligned with the tightening head), and alignment still takes a long time, so the efficiency is still low. Utility Model Content

[0003] In view of the deficiencies existing in the prior art, the utility model provides a multi-head tightening device, which solves the problem in the prior art that multi-head tightening requires precise positioning of workpieces, which is time-consuming and leads to low efficiency.

[0004] According to an embodiment of the utility model, a multi-head tightening device includes a mounting frame, a top plate is provided on the mounting frame, a plurality of driving motors are fixedly mounted on the top plate, each driving motor is respectively connected to a tightening head located below the top plate through a telescopic steering member; a middle plate is also provided on the mounting frame and located below the top plate, the middle plate is provided with a through frame, and all tightening heads vertically pass through the through frame, and an adjustment component for adjusting the lateral and longitudinal positions of the tightening heads is also installed on the middle plate; an elastic pressure rod vertically passing through the through frame is also installed on the top plate.

[0005] In the above embodiment, similar to the prior art, one driving motor drives one tightening head. The difference is that the workpiece in this scheme only needs to be tightened by the elastic pressure rod, and then the position of the tightening head is adjusted to align with the required tightening position through the adjustment component to start the operation. There is no need to accurately align the workpiece, thereby shortening the overall time consumption and improving the overall efficiency. This solves the problem of low efficiency caused by the need for precise positioning of the workpiece for multi-head tightening in the prior art, which is time-consuming.

[0006] Furthermore, the mounting frame is also provided with a bottom plate located below the middle plate.

[0007] Furthermore, the telescopic steering member includes a first universal joint fixedly connected to the output end of the driving motor, a telescopic rod fixedly connected to the first universal joint, and a second universal joint fixedly connected to the telescopic rod, and the second universal joint is also fixedly connected to the tightening head.

[0008] Furthermore, the adjustment component includes a longitudinal expander and a transverse expander. The longitudinal expander is fixedly connected to the middle plate, and the longitudinal expander has a first expansion end that expands toward the center of the through frame. The transverse expander is fixedly connected to the first expansion end, and the transverse expander has a second expansion end whose expansion direction is perpendicular to the expansion direction of the first expansion end. The tightening head is located at one end above the middle plate and is fixedly connected to the second expansion end.

[0009] Furthermore, a first track is fixedly connected to the middle plate, a first slider that slides relative to the first track is connected to the first track, the first telescopic end is fixedly connected to the first slider to drive the first slider to slide relative to the first track, and the transverse telescope is fixedly connected to the first slider.

[0010] Furthermore, the first slider is fixedly connected to the second track, the second track is connected to the second slider sliding relative to it, the second telescopic end is fixedly connected to the second slider to drive the second slider to slide relative to the second track, and the longitudinal telescope is fixedly connected to the second slider.

[0011] Furthermore, a connecting plate is fixedly connected between the second sliding block and the tightening head.

[0012] Furthermore, the telescopic rod includes a spline sleeve fixedly connected to the first universal joint, and a spline shaft telescopically connected to the spline sleeve, and the spline shaft is also fixedly connected to the second universal joint.

[0013] Furthermore, the elastic pressure rod includes a telescopic cylinder fixedly connected to the top plate, a vertical rod telescopically connected to the telescopic cylinder, a pressure plate fixedly connected to the vertical rod, and a spring sleeved outside the vertical rod and located between the pressure plate and the telescopic cylinder.

[0014] Furthermore, the telescopic cylinder is also fixedly connected to a limiting ring, and one end of the spring abuts against the limiting ring.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The workpiece is tightened by an elastic pressure rod, and then the position of the tightening head is adjusted by the adjustment component to align with the required tightening position to start the operation. There is no need to accurately align the workpiece, thereby shortening the overall time and improving the overall efficiency. This solves the problem of low efficiency caused by the need for precise positioning of the workpiece for multi-head tightening in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 It is a partial structural diagram of an embodiment of the utility model Figure 1 ;

[0019] Figure 3 It is a partial structural diagram of an embodiment of the utility model Figure 2 ;

[0020] In the above drawings:

[0021] Mounting frame 1, top plate 2, drive motor 3, telescopic steering member 4, tightening head 5, middle plate 6, through frame 7, elastic pressure rod 8, bottom plate 9, first universal joint 10, telescopic rod 11, second universal joint 12, spline sleeve 13, spline shaft 14, longitudinal telescope 15, transverse telescope 16, first track 17, first slider 18, second track 19, second slider 20, connecting plate 21, telescopic cylinder 22, vertical rod 23, pressure plate 24, spring 25, limit ring 26. DETAILED DESCRIPTION

[0022] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In an exemplary embodiment, Figure 1-3 As shown, this embodiment provides a multi-head tightening device, which includes a mounting frame 1, a top plate 2 is arranged on the mounting frame 1, and a plurality of driving motors 3 are fixedly mounted on the top plate 2, and each driving motor 3 is connected to a tightening head 5 located below the top plate 2 through a telescopic steering member 4; the mounting frame 1 is also provided with a middle plate 6 located below the top plate 2, the middle plate 6 is provided with a through frame 7, and all the tightening heads 5 vertically pass through the through frame 7, and an adjusting component for adjusting the lateral and longitudinal positions of the tightening heads 5 is also installed on the middle plate 6; an elastic pressure rod 8 vertically passing through the through frame 7 is also installed on the top plate 2.

[0025] In the above embodiment, similar to the prior art, one driving motor 3 drives one tightening head 5 correspondingly. The difference is that the workpiece in this scheme only needs to be tightened by the elastic pressure rod 8, and then the position of the tightening head 5 is adjusted to align with the required tightening position by the adjustment component to start the operation. There is no need to accurately align the workpiece, so the overall time consumption can be shortened, so that the overall efficiency can be improved, and the problem of low efficiency caused by the time-consuming precise positioning of the workpiece required for multi-head tightening in the prior art is solved; specifically, the workpiece is placed under the middle plate 6, that is, the elastic pressure rod 8 is first contracted upward, and then the workpiece is placed below, and then extended downward to tighten the workpiece, and then the position is adjusted by the adjustment component so that the tightening head 5 enters the corresponding tightening position (similar to the prior art, the tightening head 5 is a floating tightening head 5, which can be telescopic to enter or exit the tightening position), and then the driving motor 3 can be turned on to perform the tightening operation. When the driving motor 3 is running, the torque is transmitted to the tightening head 5 through the telescopic steering member 4, and finally the tightening operation is performed.

[0026] like Figure 1-3 As shown, in a further exemplary embodiment, the mounting frame 1 is further provided with a base plate 9 located below the middle plate 6 for placing the workpiece, that is, the workpiece is pressed against the base plate 9 by the elastic pressure rod 8, and then subsequent operations are carried out; more specifically, the telescopic steering member 4 includes a first universal joint 10 fixedly connected to the output end of the driving motor 3, and a telescopic rod 11 fixedly connected to the first universal joint 10, and a second universal joint 12 fixedly connected to the telescopic rod 11, the second universal joint 12 is also fixedly connected to the tightening head 5, that is, it can be telescopic between the first universal joint 10 and the second universal joint 12 to adapt to the position change of the tightening head 5 when the adjustment component adjusts the position, so that the adjustment is smooth, more specifically, the telescopic rod 11 includes a spline sleeve 13 fixedly connected to the first universal joint 10, and a spline shaft 14 telescopically connected to the spline sleeve 13, the spline shaft 14 is also fixedly connected to the second universal joint 12, the spline sleeve 13 and the spline shaft 14 can only be telescopic and not relatively rotated, so that the torque can be better transmitted.

[0027] like Figure 1-3As shown, in a further exemplary scheme, the adjustment component includes a longitudinal telescope 15 and a transverse telescope 16, both of which can be telescopic drive structures such as servo motors, telescopic cylinders, and oil cylinders. Specifically, the longitudinal telescope 15 is fixedly connected to the middle plate 6, and the longitudinal telescope 15 has a first telescopic end that telescopes toward the center of the through frame 7, and the transverse telescope 16 is fixedly connected to the first telescopic end, and the transverse telescope 16 has a second telescopic end whose telescopic direction is perpendicular to the telescopic direction of the first telescopic end. One end of the tightening head 5 located above the middle plate 6 is fixedly connected to the second telescopic end. The cooperation of the longitudinal telescope 15 and the transverse telescope 16 can more flexibly realize the position adjustment of the corresponding tightening head 5. Specifically, the position adjustment is limited to the through frame 7. When placing the workpiece, it only needs to be roughly placed and then adjusted. There is no need for precise placement, thereby improving efficiency.

[0028] like Figure 1-3 As shown, in a more specific exemplary scheme, a first rail 17 is fixedly connected to the middle plate 6, and the first rail 17 is connected to a first slider 18 that slides relative to the first rail 17, and the first telescopic end is fixedly connected to the first slider 18 to drive the first slider 18 to slide relative to the first rail 17, and the transverse telescope 16 is fixedly connected to the first slider 18. Further, the first slider 18 is fixedly connected to the second rail 19, and the second rail 19 is connected to a second slider 20 that slides relative to the second rail 19, and the second telescopic end is fixedly connected to the second slider 20 to drive the second slider 20 to slide relative to the second rail 19. The longitudinal telescope 15 is fixedly connected to the second slider 20, and a connecting plate 21 is also fixedly connected between the second slider 20 and the tightening head 5. In this embodiment, three groups of tightening heads 5 and drive motors 3 are provided, and the specific number can be increased or decreased according to actual conditions. A better choice is to set the elastic pressure rod 8 at the center of the through frame 7, and all the tightening heads 5 surround the elastic pressure rod 8, and the tightening heads 5 correspond to the tightening positions adjacent to it, so as to avoid excessive adjustment.

[0029] like Figure 1-3 As shown, in a further exemplary scheme, the elastic pressure rod 8 includes a telescopic cylinder 22 fixedly connected to the top plate 2, a vertical rod 23 telescopically connected to the telescopic cylinder 22, a pressure plate 24 fixedly connected to the vertical rod 23, and a spring 25 sleeved outside the vertical rod 23 and located between the pressure plate 24 and the telescopic cylinder 22. This arrangement enables the elastic pressure rod 8 to elastically press the workpiece with the assistance of the spring 25. In more detail, the telescopic cylinder 22 is also fixedly connected to a limiting ring 26, and one end of the spring 25 is abutted against the limiting ring 26 to limit the spring 25 between the pressure plate 24 and the limiting ring 26 to prevent it from disengaging.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A multi-head tightening device, characterized in that: It includes a mounting frame, a top plate is arranged on the mounting frame, a plurality of driving motors are fixedly mounted on the top plate, each of the driving motors is connected to a tightening head located below the top plate through a telescopic steering member; the mounting frame is also provided with a middle plate located below the top plate, the middle plate is provided with a through frame, and all the tightening heads vertically pass through the through frame, and an adjusting component for adjusting the lateral and longitudinal positions of the tightening heads is also installed on the middle plate; an elastic pressure rod vertically passing through the through frame is also installed on the top plate.

2. The multi-head tightening device according to claim 1, characterized in that: The mounting frame is also provided with a bottom plate located below the middle plate.

3. The multi-head tightening device according to claim 1, characterized in that: The telescopic steering member includes a first universal joint fixedly connected to the output end of the driving motor, a telescopic rod fixedly connected to the first universal joint, and a second universal joint fixedly connected to the telescopic rod, wherein the second universal joint is also fixedly connected to the tightening head.

4. The multi-head tightening device according to claim 3, characterized in that: The adjustment assembly includes a longitudinal expander and a transverse expander, the longitudinal expander is fixedly connected to the middle plate, and the longitudinal expander has a first expansion end that expands toward the center of the through frame, the transverse expander is fixedly connected to the first expansion end, and the transverse expander has a second expansion end whose expansion direction is perpendicular to that of the first expansion end, and the end of the tightening head located above the middle plate is fixedly connected to the second expansion end.

5. The multi-head tightening device according to claim 4, characterized in that: The middle plate is fixedly connected with a first track, the first track is connected with a first slider which slides relative to the first track, the first telescopic end is fixedly connected with the first slider to drive the first slider to slide relative to the first track, and the transverse telescoping device is fixedly connected with the first slider.

6. The multi-head tightening device according to claim 5, characterized in that: The first slider is fixedly connected to the second track, the second track is connected to the second slider which slides relative to it, the second telescopic end is fixedly connected to the second slider to drive the second slider to slide relative to the second track, and the longitudinal telescope is fixedly connected to the second slider.

7. The multi-head tightening device according to claim 6, characterized in that: A connecting plate is also fixedly connected between the second sliding block and the tightening head.

8. The multi-head tightening device according to claim 3, characterized in that: The telescopic rod includes a spline sleeve fixedly connected to the first universal joint, and a spline shaft telescopically connected to the spline sleeve, and the spline shaft is also fixedly connected to the second universal joint.

9. The multi-head tightening device according to any one of claims 1 to 8, characterized in that: The elastic pressure rod includes a telescopic cylinder fixedly connected to the top plate, a vertical rod telescopically connected to the telescopic cylinder, a pressure plate fixedly connected to the vertical rod, and a spring sleeved outside the vertical rod and located between the pressure plate and the telescopic cylinder.

10. The multi-head tightening device according to claim 9, characterized in that: The telescopic cylinder is also fixedly connected to a limiting ring, and one end of the spring abuts against the limiting ring.

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