A centering mechanism of a multi-station nut locking machine

Abstract

The utility model relates to nut locking machine technical field, and disclose a kind of centering mechanism of multi-station nut locking machine, including workbench, the workbench rotatable installation has carousel, the carousel top end fixed installation has workpiece positioning platform, the workpiece positioning platform side fixed installation has riser, the riser inside screw thread is connected with adjusting bolt, the adjusting bolt front end screw thread is connected with moving plate, the adjusting bolt surface is provided with two sections of thread, and the thread pitch of the outer wall of the connecting part with riser is greater than the thread pitch of the outer wall of the connecting part with moving plate. The centering mechanism of the multi-station nut locking machine, by setting the adjusting bolt with two sections of thread, and the thread pitch of both ends is different, when rotating, due to different position, the moving plate with small pitch outer wall is displaced in workpiece positioning platform by screw connection, moves, to play the effect of micro distance adjustment, solve the problem that positioning hole spacing is fixedly arranged and cannot be fine tuned in prior art.

Description

Technical Field

[0001] This utility model relates to the field of nut-locking machine technology, specifically to a centering mechanism for a multi-station nut-locking machine. Background Technology

[0002] In modern industrial production, multi-station nut tightening operations are widely used in various mechanical assembly processes, such as automobile manufacturing and electronic equipment assembly. Traditional nut tightening methods often rely on manual operation, which is not only inefficient but also makes it difficult to ensure the consistency and accuracy of tightening multiple nuts, resulting in inconsistent product quality. With the development of automation technology, multi-station nut tightening machines have emerged, greatly improving production efficiency and product quality. However, in actual use, the alignment of the nut and the screw hole becomes a key factor affecting the performance of the nut tightening machine. Due to various reasons such as workpiece machining errors, installation deviations, and mechanical vibrations, misalignment between the nut and the screw hole often occurs. This not only makes it difficult for the nut to be screwed into the screw hole, leading to tightening failure, but may also damage the nut and the screw hole, increasing production costs. At this point, it is necessary to adjust the workpiece position. Existing adjustment methods mostly use the cooperation of locating pins and locating holes. However, since the spacing of the locating holes is fixed, each adjustment can only adjust a fixed distance. Since workpieces vary in size, this method cannot accommodate all workpieces and lacks fine-tuning capabilities. Therefore, we propose an alignment mechanism for a multi-station nut tightening machine to solve the above-mentioned technical problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a centering mechanism for a multi-station nut-locking machine, which has advantages such as easy fine-tuning and solves the aforementioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a centering mechanism for a multi-station nut-locking machine, comprising a worktable, a turntable rotatably mounted on the worktable, a workpiece positioning platform fixedly mounted on the top of the turntable, a vertical plate fixedly mounted on the side of the workpiece positioning platform, an adjusting bolt threadedly connected inside the vertical plate, a movable plate threadedly connected to the front end of the adjusting bolt, and two threads on the surface of the adjusting bolt, wherein the thread pitch of the part connected to the vertical plate is greater than the thread pitch of the part connected to the movable plate.

[0005] As a preferred technical solution of this utility model, the workpiece positioning platform is provided in multiple sets and is distributed in a circular array around the center of the turntable to form a multi-station workbench.

[0006] As a preferred embodiment of this utility model, two guide bars are fixedly installed on the top surface of the workpiece positioning platform, and a guide groove corresponding to the guide bars is opened on the bottom surface of the moving plate.

[0007] As a preferred embodiment of this utility model, the top surface of the movable plate is linearly arrayed with several sets of slots, and a card plate is inserted into the slot through a plug rod.

[0008] As a preferred embodiment of this utility model, the adjusting bolt passes through the interior of the vertical plate, and the thread length of the part connecting with the vertical plate on the outer wall is greater than the thickness of the vertical plate.

[0009] As a preferred technical solution of this utility model, a threaded groove is provided through the interior of the movable plate, and the threaded groove engages with the small-pitch thread of the adjusting bolt.

[0010] Compared with the prior art, this utility model provides a centering mechanism for a multi-station nut-locking machine, which has the following beneficial effects:

[0011] This invention utilizes an adjusting bolt with two threaded sections, each with a different thread pitch. When the adjusting bolt rotates one full turn, the end with the larger thread pitch moves the bolt to a position with a larger thread pitch, while the end with the smaller thread pitch moves it to a position with a smaller thread pitch. This asynchronous movement causes displacement of the moving plate connecting the threaded connection to the outer wall of the smaller thread pitch section on the workpiece positioning platform, thus achieving micro-adjustment. This solves the problem in existing technologies where the positioning hole spacing is fixed, allowing only a fixed distance adjustment and failing to adapt to all workpieces or provide fine-tuning. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present utility model;

[0013] Figure 2 The structure of this utility model Figure 1 A magnified view of part A in the diagram;

[0014] Figure 3 This is a three-dimensional schematic diagram of the structural components of the workbench of this utility model;

[0015] Figure 4 This is a schematic diagram of the test of the structural workbench of this utility model;

[0016] Figure 5 The structure of this utility model Figure 3 A magnified view of part B in the diagram.

[0017] The components include: 1. Workbench; 2. Turntable; 3. Workpiece positioning platform; 4. Vertical plate; 5. Adjusting bolt; 6. Moving plate; 7. Guide bar; 8. Slot; 9. Clamping plate. Detailed Implementation

[0018] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0019] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figure 1-5 A centering mechanism for a multi-station nut-locking machine includes a worktable 1, a turntable 2 rotatably mounted on the worktable 1, a workpiece positioning platform 3 fixedly mounted on the top of the turntable 2, a vertical plate 4 fixedly mounted on the side of the workpiece positioning platform 3, an adjusting bolt 5 threadedly connected inside the vertical plate 4, and a moving plate 6 threadedly connected to the front end of the adjusting bolt 5. The adjusting bolt 5 has two threads on its surface. The thread pitch of the part connecting to the vertical plate 4 is greater than the thread pitch of the part connecting to the moving plate 6. By setting the adjusting bolt 5 with two threads and different thread pitches at both ends, when the adjusting bolt 5 rotates one revolution, the end with the larger thread pitch rotates, and the adjusting bolt 5 moves to a position with a larger thread pitch. The end with the smaller thread pitch rotates one revolution, and moves to a position with a smaller thread pitch. Because the two positions are not synchronized, the moving plate 6 threadedly connected to the outer wall of the smaller thread pitch moves on the workpiece positioning platform 3, thereby achieving micro-adjustment. This solves the problem of the existing technology where the positioning hole spacing is fixed, can only adjust a fixed distance, cannot adapt to all workpieces, and cannot be finely adjusted.

[0022] For further details, please refer to Figure 1 and Figure 3The workpiece positioning platform 3 is set with multiple sets and is distributed in a circular array around the center of the turntable 2 to form a multi-station workbench 1. The multi-station workbench 1 can carry out the locking operation of multiple nuts and can quickly switch stations to adapt to different production tasks, greatly shortening the production time.

[0023] For further details, please refer to Figure 3 and Figure 5 Two guide bars 7 are fixedly installed on the top surface of the workpiece positioning platform 3, and a guide groove corresponding to the guide bars 7 is opened on the bottom surface of the moving plate 6. The guide bars 7 and the guide groove cooperate with each other, so that the moving plate 6 can make linear movement on the workpiece positioning platform 3 by adjusting the rotation of the adjusting bolt 5, thereby playing the role of adjusting the position of the workpiece.

[0024] For further details, please refer to Figures 1-3 The top surface of the movable plate 6 has a linear array of several sets of slots 8. Inside the slots 8, a card plate 9 is inserted through a plug rod. The arrangement of several sets of slots 8 can provide multiple insertion positions for the card plate 9, so that the movable plate 6 can adjust the position of the card plate 9 according to the size of the workpiece, thereby flexibly adjusting and fixing the workpiece to achieve the function of adapting to workpieces of different sizes.

[0025] For further details, please refer to Figure 2 and Figure 3 The adjusting bolt 5 passes through the interior of the vertical plate 4, and the thread length of the part connected to the vertical plate 4 is greater than the thickness of the vertical plate 4. This structure design allows the large-pitch end of the adjusting bolt 5 to have sufficient travel to rotate inside the vertical plate 4, avoiding the large-pitch thread from disengaging from the vertical plate 4 and affecting the fine adjustment of the moving plate 6. The moving plate 6 has a through-hole threaded groove inside, and the threaded groove and the small-pitch thread of the adjusting bolt 5 are threadedly engaged with each other. When the large-pitch end of the adjusting bolt 5 rotates, the distance difference caused by the different pitches can be used to make fine adjustments to the position of the moving plate 6.

[0026] In use, place the workpiece on the top of the moving plate 6. According to the size of the workpiece, insert the rod at the bottom of the clamping plate 9 into the slot 8 around the workpiece to fix it. After fixing, the position of the workpiece needs to be adjusted for different sizes to ensure that the nut can be locked smoothly. At this time, rotate the adjusting bolt 5. The end with the larger pitch rotates and moves inside the vertical plate 4. The end with the smaller pitch rotates accordingly. Due to the distance difference caused by the different pitches, the moving plate 6, which is threaded to the end with the smaller pitch, moves. The moving plate 6 moves linearly on the workpiece positioning platform 3 under the action of the guide bar 7 and the guide groove to complete the fine adjustment of the position.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centering mechanism for a multi-station nut-locking machine, comprising a worktable (1), wherein a turntable (2) is rotatably mounted on the worktable (1), characterized in that: The top of the turntable (2) is fixedly installed with a workpiece positioning platform (3), and a vertical plate (4) is fixedly installed on the side of the workpiece positioning platform (3). An adjusting bolt (5) is threaded inside the vertical plate (4), and a moving plate (6) is threaded at the front end of the adjusting bolt (5). The surface of the adjusting bolt (5) is provided with two sections of thread, and the thread pitch of the part connected to the vertical plate (4) is greater than the thread pitch of the part connected to the moving plate (6).

2. The centering mechanism of a multi-station nut-locking machine according to claim 1, characterized in that: The workpiece positioning platform (3) is provided in multiple sets and is distributed in a circular array around the center of the turntable (2) to form a multi-station workbench (1).

3. The centering mechanism of a multi-station nut-locking machine according to claim 1, characterized in that: The workpiece positioning platform (3) has two guide bars (7) fixedly installed on its top surface, and the bottom surface of the moving plate (6) has a guide groove corresponding to the guide bars (7).

4. The centering mechanism of a multi-station nut-locking machine according to claim 1, characterized in that: The top surface of the movable plate (6) has a linear array of several sets of slots (8), and a card plate (9) is inserted into the slot (8) through a plug rod.

5. The centering mechanism of a multi-station nut-locking machine according to claim 1, characterized in that: The adjusting bolt (5) passes through the interior of the vertical plate (4), and the thread length of the part connected to the vertical plate (4) on the outer wall is greater than the thickness of the vertical plate (4).

6. The centering mechanism of a multi-station nut-locking machine according to claim 1, characterized in that: The movable plate (6) has a through threaded groove inside, and the threaded groove engages with the small-pitch thread of the adjusting bolt (5).

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