Hydraulic retarder shock absorbing plate wire harness clip tightening anti-rotation tool

Abstract

The utility model relates to the field of hydraulic retarder frock, concretely relates to a hydraulic retarder shock pad wire harness clamp sub tightening anti -rotation frock, including the tightening device and anti -rotation device of linkage, the anti -rotation device includes connecting rod, anti -rotation block, spring, oilless bushing and spacer, the connecting rod links with the tightening device, the connecting rod is sequentially provided with spring, oilless bushing and spacer, wherein the connecting rod links with spacer through fixed bolt, the anti -rotation block links with spacer bottom, and its anti -rotation block one end is still equipped with the strip for inserting wire harness clamp groove, the device is through anti -rotation device for solving the rotation deviation problem of hydraulic retarder shock pad wire harness clamp in automatic tightening process, the baffle in anti -rotation device is directly inserted into wire harness clamp groove, can limit the rotation of clamp when tightening bolt, eliminates the problem of clamp skewing caused by the difference of friction, significantly improves assembly accuracy, avoids the rework or quality hidden danger of subsequent procedure.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic retarder tooling, specifically to a hydraulic retarder damping plate wire harness clamp tightening anti-rotation tooling. Background Technology

[0002] With the booming development of the intelligent manufacturing industry, our company has an intelligent assembly line for producing retarder assemblies with an automation rate of up to 65%. However, during the automatic assembly process, we have found some frequent problems, such as the damping plate wiring harness clamps being bent at an angle.

[0003] The specific process of the damping plate wire harness clip being angled is as follows: The previous process is the pre-installation process of the damping plate. The damping plate needs to be fixed to the housing with 5 bolts. In order to facilitate the subsequent fixing of the wire harness, a wire harness clip needs to be added to the outermost bolt. The pre-installation position of the damping plate wire harness clip must match the position required by the drawing. The next process is the automatic tightening process. During the automatic tightening process of the tightening machine, the damping plate wire harness clip will rotate along with the bolts, and finally the position of the wire harness clip will be offset from the position required by the drawing.

[0004] The cause of this is that during the automatic tightening process, the wire harness clamp gets caught between the shock absorber and the bolt. A partial schematic diagram of the workpiece is shown below. Figure 1 As shown, the wire harness clip has the same surface roughness on both sides, and the bolt is a Dacromet bolt, which has a rougher surface than the damping plate. This causes the friction between the bolt and the wire harness clip to be greater than the friction between the wire harness clip and the damping plate. As the bolt is tightened, the wire harness clip rotates clockwise, which leads to the problem of misalignment. This problem not only affects the assembly accuracy and quality of the product, but may also have a potential impact on subsequent production processes and product performance. Utility Model Content

[0005] The purpose of this invention is to provide a tightening anti-rotation fixture for the hydraulic retarder damping plate wire harness clamp. This structure adds an anti-rotation function to the wire harness clamp without affecting the automatic tightening, thereby solving the problem of the production line damping plate wire harness clamp becoming skewed in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This utility model relates to a clamping and anti-rotation fixture for a hydraulic retarder damping plate wire harness, comprising a tightening device and an anti-rotation device connected together. The anti-rotation device includes a connecting rod, an anti-rotation block, a spring, an oil-free bushing, and a spacer. The connecting rod is connected to a tightening device. The spring, the oil-free bushing, and the spacer are sequentially fitted on the connecting rod. The connecting rod and the spacer are connected by a fixing bolt. The anti-rotation block is connected to the bottom of the spacer. One end of the anti-rotation block is also provided with a stop bar for inserting into the wire harness clip groove.

[0007] As a further improvement, the tightening device includes a tightening connecting rod, a tightening sleeve, a flange sleeve, and a connecting spacer. The connecting spacer is connected to the flange sleeve; the tightening connecting rod is connected to the tightening head, and the tightening connecting rod and the tightening head pass through the connecting spacer and the flange sleeve in sequence to connect to the bolt to be tightened.

[0008] As a further improvement, an electric tightening gun for applying torque is also included, which is connected to the connecting spacer via an IAI robot connecting block.

[0009] As a further improvement, the flange sleeve is also provided with an I-shaped structure.

[0010] As a further improvement, the connecting rod is connected to the side of the flange sleeve by a locating pin and connecting bolts.

[0011] As a further improvement, a gasket is also included, which is disposed between the flange sleeve and the connecting bolts.

[0012] As a further improvement, the oil-free bushing is press-fitted into the spacer for sliding engagement with the connecting rod; It also includes a gasket, which is disposed between the connecting rod and the fixing bolt.

[0013] The spacer also has a circular hole for the connecting rod to extend into; the connecting rod has an annular groove, through which a cylindrical pin passes through the circular hole and is screwed into the annular groove on the connecting rod to achieve horizontal position fixation.

[0014] As a further improvement, a cylindrical pin is also included. The oil-free bushing and spacer are provided with connecting holes in the horizontal direction, and the connecting rod is provided with an annular groove in the horizontal direction. The cylindrical pin passes through the circular hole and is screwed into the annular groove on the connecting rod to achieve horizontal position fixation.

[0015] As a further improvement, a spring retainer ring is also included, which is disposed between the spring and the spacer.

[0016] As a further improvement, the anti-rotation block is provided with an annular hole, and the bolt passes through the annular hole to connect the anti-rotation block to the spacer, while also enabling fine adjustment of the horizontal position of the stop bar.

[0017] Compared with the prior art, this utility model achieves the following technical effects: This device uses an anti-rotation mechanism to solve the problem of rotational offset of the hydraulic retarder damping plate wire harness clamp during automatic tightening. The stop bar within the anti-rotation device is directly inserted into the wire harness clamp slot, limiting clamp rotation during bolt tightening and ensuring its position matches the drawing requirements. The spring in the anti-rotation device provides adaptive pressure, ensuring the stop bar remains tightly fitted to the clamp slot, compensating for workpiece tolerances and vibration interference. The connection between the cylindrical pin and the annular groove of the connecting rod further fixes the horizontal position, preventing tooling displacement. Therefore, this device eliminates clamp misalignment caused by frictional differences at its source, significantly improving assembly accuracy and avoiding rework or quality issues in subsequent processes.

[0018] The tightening device of this equipment adopts a separate design of tightening sleeve and tightening connecting rod, and achieves modular assembly through flange sleeve and connecting spacer. This ensures accurate transmission of tightening torque and facilitates quick docking with electric tightening guns and robots, thereby improving the compatibility of automated production lines. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a workpiece from the prior art. Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 This is a schematic diagram illustrating the use of this utility model; Figure 5 This is a schematic diagram of the tightening sequence of this utility model.

[0020] Reference numerals: 1. Flange sleeve; 2. Gasket; 3. Connecting rod; 4. Spring retaining ring; 5. Spacer; 6. Gasket; 7. Anti-rotation block; 8. Connecting bolt; 9. Locating pin; 10. Spring; 11. Oil-free bushing; 12. Cylindrical pin; 13. Fixing bolt; 14. Electric tightening gun; 15. IAI robot connecting block; 16. Connecting spacer; 17. Tightening connecting rod; 18. Tightening sleeve; 19. Workpiece. Detailed Implementation

[0021] The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Rather, the embodiments of this application include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0022] See Figure 1The diagram shows a partial view of the workpiece in the prior art. Since the surface of the bolt is rougher than that of the damping plate, the friction between the bolt and the wire harness clamp is greater than the friction between the wire harness clamp and the damping plate. As the bolt is tightened, the wire harness clamp rotates clockwise, which leads to the problem of misalignment. Therefore, in order to solve this problem, this embodiment proposes a hydraulic retarder damping plate wire harness clamp tightening anti-rotation tooling.

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] See Figure 2 and Figure 3 This embodiment proposes a tightening anti-rotation fixture for a hydraulic retarder damping plate wire harness clamp, including a tightening device and an anti-rotation device connected together. The anti-rotation device includes a connecting rod 3, an anti-rotation block 7, a spring 10, an oil-free bushing 11, and a spacer 5. The connecting rod 3 is connected to a tightening device. The spring 10, the oil-free bushing 11, and the spacer 5 are sequentially fitted on the connecting rod 3. The connecting rod 3 and the spacer 5 are connected by a fixing bolt 13. The anti-rotation block 7 is connected to the bottom of the spacer 5. One end of the anti-rotation block 7 is also provided with a stop bar for inserting into the wire harness clip groove.

[0025] See Figure 3 The anti-rotation device in this embodiment consists of a connecting rod 3, an anti-rotation block 7, a spring 10, an oil-free bushing 11, and a spacer 5. The connecting rod 3 is the core shaft component. The connecting rod 3 is locked to the side of the flange sleeve 1 by a positioning pin 9 and a connecting bolt 8. The positioning pin 9 and the connecting bolt 8 cooperate to eliminate the horizontal degree of freedom and achieve a stable connection.

[0026] A spring 10, a spring 10 retaining ring 4, and a spacer 5 are sequentially installed on the bottom of the connecting rod 3. It should be noted that, in this embodiment, the spacer 5 has an inner hole in which an oil-free bushing 11 is press-fitted. In this embodiment, the oil-free bushing 11 can slide with the connecting rod 3 to ensure smooth axial movement of the connecting rod 3. The spring 10 retaining ring 4 is specifically locked between the spring 10 and the spacer 5 to achieve a limiting position.

[0027] In this embodiment, the connecting rod 3 and the spacer 5 are fastened by the cooperation of the fixing bolt 13 and the washer 6; in addition, the connecting rod 3, the spacer 5 and the oil-free bushing 11 are all provided with connecting holes in the horizontal direction. These connecting holes are for the cylindrical pin 12 to pass through the connecting rod 3, the spacer 5 and the oil-free bushing 11 laterally to achieve horizontal locking.

[0028] In this embodiment, the bottom of the spacer 5 is provided with an anti-rotation block 7, which is connected to the spacer 5 by bolts. One end of the anti-rotation block 7 is provided with a stop bar. In this embodiment, the bottom of the spacer 5 is provided with an annular hole for matching bolts. In the actual installation process, it can be finely adjusted according to the position of the workpiece 19 to ensure that the stop bar of the anti-rotation block 7 can be inserted into the wire harness clamp of the workpiece 19 to achieve the limit.

[0029] The tightening device of the embodiment includes a tightening connecting rod 17, a tightening sleeve 18, a flange sleeve 1, and a connecting spacer 16. The top end of the tightening connecting rod 17 is connected to an electric tightening gun 14, and the bottom end is fixedly connected to the tightening sleeve 18; both pass through the connecting spacer 16 and the flange sleeve 1, and are finally received by the tightening sleeve 18 to tighten the bolt.

[0030] In this embodiment, the flange sleeve 1 has an I-shaped structure inside to enhance rigidity. Therefore, the tightening connecting rod 17 is preferably set in two sections. The tightening connecting rod 17 is constrained and corrected by the central fine through hole to ensure that the tightening force is kept in a straight line and does not bend or deform. The side of the flange sleeve 1 is fixed to the connecting rod 3 by the positioning pin 9, the connecting bolt 8, and the pad 2 to ensure that the two devices move synchronously.

[0031] The process in this embodiment is as follows: Figure 4 As shown, 1. The tooling is connected to the robot via the IAI robot connecting block 15. The tightening device is controlled by the program to move from the initial position to the position of the wire harness clamp bolt. After moving downwards, it moves to the position of the tightening sleeve 18 and the bolt cap. At this time, the stop bar of the anti-rotation block 7 is inserted into the wire harness clamp, and the electric tightening gun 14 starts to tighten. After tightening, the robot moves upwards and disengages from the shock absorber bolt. In order to prevent the tooling from interfering with or colliding with the shock absorber screw during the robot transfer process, the tooling needs to be raised above the position of the shock absorber screw.

[0032] 2. The robot moves horizontally. When the tightening sleeve 18 moves to the position of the diagonal bolt 2, the robot drives the tooling to move downward. The anti-rotation block 7 in the anti-rotation device is in a lower position and contacts the shock-absorbing plate in advance. As the robot moves downward, the anti-rotation block 7 links the entire floating structure to compress the spring 10 upward. When the tightening sleeve 18 and the shock-absorbing plate bolt cap are in contact, the anti-rotation structure stops, and the electric tightening gun 14 starts to tighten. After tightening is completed, the robot moves upward, disengages from the shock-absorbing plate bolt, and moves beyond the position of the shock-absorbing plate screw. 3. Repeat step two, tightening the remaining bolts diagonally, in the following sequence. Figure 5 As shown; 4. To prevent torque attenuation, the bolt at position 1 needs to be retightened. The robot moves horizontally. When the tightening sleeve 18 moves to the position of bolt 1 with the wire harness clamp, the robot drives the tooling to move downward. After the tightening sleeve 18 and the bolt cap are aligned, the stop bar of the anti-rotation block 7 is inserted into the wire harness clamp, and the electric tightening gun 14 begins to tighten. After tightening is completed, the robot moves upward, disengages from the shock absorber bolt, moves beyond the position of the shock absorber screw, and then returns to the initial position.

[0033] It should be noted that in the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0035] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A hydraulic retarder shock pad wire harness clip tightening anti-rotation tool, characterized in that, Includes a connected tightening device and an anti-rotation device; The anti-rotation device includes a connecting rod, an anti-rotation block, a spring, an oil-free bushing, and a spacer. The connecting rod is connected to a tightening device. The spring, the oil-free bushing, and the spacer are sequentially fitted on the connecting rod. The connecting rod and the spacer are connected by a fixing bolt. The anti-rotation block is connected to the bottom of the spacer. One end of the anti-rotation block is also provided with a stop bar for inserting into the wire harness clip groove.

2. The hydraulic retarder shock pad wire harness clip tightening anti-rotation tool of claim 1, wherein, The tightening device includes a tightening connecting rod, a tightening sleeve, a flange sleeve, and a connecting spacer. The connecting spacer is connected to the flange sleeve; the tightening connecting rod is connected to the tightening head, and the tightening connecting rod and the tightening head pass through the connecting spacer and the flange sleeve in sequence to connect to the bolt to be tightened.

3. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 2, characterized in that, It also includes an electric tightening gun for applying torque, which is connected to the connecting spacer via an IAI robot connecting block.

4. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 2, characterized in that, The flange sleeve is also provided with an I-shaped structure.

5. A clamping anti-rotation fixture for a hydraulic retarder damping plate wire harness according to any one of claims 1 to 4, characterized in that, The connecting rod is connected to the side of the flange sleeve by a locating pin and connecting bolts.

6. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 5, characterized in that, It also includes a gasket, which is disposed between the flange sleeve and the connecting bolt.

7. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 1, characterized in that, The oil-free bushing is press-fitted into the spacer for sliding engagement with the connecting rod; It also includes a gasket, which is disposed between the connecting rod and the fixing bolt.

8. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 7, characterized in that, It also includes a cylindrical pin, and the oil-free bushing and spacer are provided with connecting holes in the horizontal direction. The connecting rod is provided with an annular groove in the horizontal direction, wherein the cylindrical pin passes through the circular hole and is screwed into the annular groove on the connecting rod to achieve horizontal position fixation.

9. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 1, characterized in that, It also includes a spring retainer ring, which is disposed between the spring and the spacer.

10. The anti-rotation fixture for tightening the hydraulic retarder damping plate wire harness clamp according to claim 1, characterized in that, The anti-rotation block is provided with an annular hole, and the bolt passes through the annular hole to connect the anti-rotation block to the spacer, while also enabling fine adjustment of the horizontal position of the stop bar.

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