An automatic tightening mechanism

Abstract

The utility model discloses an automatic tightening mechanism relates to the field of tightening mechanism, including fixed pedestal, tightening drive motor and speed reducer, tightening drive motor and speed reducer all fixed mounting in the upper end of fixed pedestal, the front end of speed reducer is located in tightening drive motor, the output shaft front end fixed mounting of speed reducer has the drive rod, the inside front of fixed pedestal swingly installs the sliding bottom plate, the upper end front fixed mounting of sliding bottom plate has the guide rail rod, the outside slide of guide rail rod installs the switching sliding block. The utility model discloses quick switching and drive rod connection's tightening sleeve, thereby quick replacement different specifications' tightening sleeve and tighten the use to screw, avoid the repeated dismounting in single operation, support simultaneously and pre -install multiple specifications sleeve, more suitable for the mixed flow production line of bolt size frequent change, reduce the production line stoppage time, constitute modular mounting structure, support the quick replacement of different specifications sleeve.

Description

Technical Field

[0001] This utility model relates to the field of tightening mechanisms, and in particular to an automatic tightening mechanism. Background Technology

[0002] Automatic tightening mechanisms are devices used in workpiece processing to tighten screws on workpieces by means of a motor drive. They can quickly tighten screws on workpieces and are widely used in various metal workpiece processing applications.

[0003] However, when using the tightening mechanism in a mixed-flow production line, bolt specifications change frequently. Operators need to manually disassemble the old sleeve and install the new sleeve. This process is not only time-consuming but also relies on manual alignment accuracy, which can easily lead to misalignment between the drive rod and the sleeve, resulting in uneven torque transmission or stripped screw heads. Repeated disassembly and assembly not only increases labor intensity but also causes production line downtime, affecting overall cycle efficiency. At the same time, traditional mechanisms lack modular integration capabilities and cannot pre-install multiple sleeves to meet the needs of rapid switching. When the production line needs to process screws of different sizes, the mechanism must stop to change sleeves, making continuous operation impossible. This not only extends the production cycle but also limits the applicability of the mechanism in flexible manufacturing systems. Especially in high-cycle mixed-flow production lines, the accumulated downtime will significantly reduce capacity utilization. Utility Model Content

[0004] The main objective of this invention is to provide an automatic tightening mechanism that can effectively solve the technical problems raised in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic tightening mechanism includes a fixed base, a tightening drive motor, and a reducer. Both the tightening drive motor and the reducer are fixedly mounted on the upper end of the fixed base. The reducer is located at the front end of the tightening drive motor. A drive rod is fixedly mounted on the front end of the output shaft of the reducer. A sliding base plate is movably mounted on the inner front side of the fixed base. A guide rail is fixedly mounted on the upper front end of the sliding base plate. A switching slider is slidably mounted on the outer side of the guide rail. A sleeve mounting plate is fixedly mounted on one side of the switching slider. Multiple modular mounting structures are fixedly mounted on one side of the sleeve mounting plate. Tightening sleeves are fixedly mounted on the inner side of each modular mounting structure.

[0007] As a further embodiment of this utility model, the rotating shaft of the tightening drive motor is fixedly connected to the input end of the reducer, and the reducer is located behind the guide rail rod.

[0008] As a further embodiment of this utility model, a push-pull cylinder is fixedly installed on the inner side of the fixed base above the sliding base plate. The front end of the piston rod of the push-pull cylinder is fixedly connected to the guide rail rod, and a switching handle is integrally formed on the upper end of the sleeve mounting plate.

[0009] As a further embodiment of this utility model, the module installation structure includes a fixing block, an installation slot, an installation block, a fixing collar, and an installation clamp. The fixing block is fixedly installed on one side of the sleeve mounting plate, the installation slot is opened on one side of the fixing block, the installation block is inserted into the installation slot, the fixing collar is integrally formed on one side of the installation block, and the installation clamp is movably installed on the inner side of the fixing collar.

[0010] As a further embodiment of this utility model, both the mounting slot and the mounting block are T-shaped. The mounting block is inserted into the mounting slot from the front for connection. The mounting sleeve rotates around the fixing ring. Multiple fixing blocks are arranged vertically around one side of the sleeve mounting plate.

[0011] As a further embodiment of this utility model, the tightening sleeve is fixedly installed inside the mounting clip, and the drive rod is inserted into the rear end of the tightening sleeve for mating connection.

[0012] Compared with the prior art, this utility model has the following advantages: Multiple tightening sleeves of different specifications are integrated and installed through a sleeve mounting plate and modular mounting structure. The push-pull cylinder drives the guide rail rod to move back and forth, allowing the drive rod to quickly separate and connect with the tightening sleeve. The switching handle pulls the sleeve mounting plate up and down, while the switching slider slides around the guide rail rod, quickly switching the tightening sleeve connected to the drive rod. This allows for rapid replacement of different specifications of tightening sleeves for tightening screws, avoiding repeated disassembly and assembly in a single operation. It supports the simultaneous pre-installation of multiple specifications of sleeves, making it more suitable for mixed-flow production lines where bolt sizes frequently change, reducing production line downtime. Simultaneously, the tightening sleeve is fixed in the modular mounting structure through mounting clips. The mounting block and the T-shaped mounting slot are connected in a front-insertion detachable manner, forming a modular mounting structure that supports rapid replacement of different specifications of sleeves. This solves the problems of low efficiency, cumbersome replacement, and insufficient precision in traditional tightening operations, making it more suitable for automated production lines that require frequent sleeve replacement. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of an automatic tightening mechanism according to the present invention;

[0014] Figure 2 This is a rear view of an automatic tightening mechanism according to the present invention;

[0015] Figure 3 This is an enlarged view of the guide rail rod in an automatic tightening mechanism according to this utility model;

[0016] Figure 4 This is an enlarged, disassembled view of the module installation structure in an automatic tightening mechanism according to this utility model.

[0017] In the diagram: 1. Fixed base; 2. Tightening drive motor; 3. Reducer; 4. Drive rod; 5. Push-pull cylinder; 6. Sliding base plate; 7. Guide rail rod; 8. Switching slider; 9. Sleeve mounting plate; 10. Switching handle; 11. Module mounting structure; 12. Fixing block; 13. Mounting slot; 14. Mounting block; 15. Fixing collar; 16. Mounting clamp; 17. Tightening sleeve. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] like Figures 1-4 As shown, an automatic tightening mechanism is described; please refer to it carefully. Figures 1-4 The system includes a fixed base 1, a tightening drive motor 2, and a reducer 3. The tightening drive motor 2 and the reducer 3 are both fixedly installed on the upper end of the fixed base 1. The reducer 3 is located at the front end of the tightening drive motor 2. A drive rod 4 is fixedly installed at the front end of the output shaft of the reducer 3. A sliding base plate 6 is movably installed on the inner front side of the fixed base 1. A guide rail rod 7 is fixedly installed on the upper front end of the sliding base plate 6. A switching slider 8 is slidably installed on the outer side of the guide rail rod 7. A sleeve mounting plate 9 is fixedly installed on one side of the switching slider 8. Multiple module mounting structures 11 are fixedly installed on one side of the sleeve mounting plate 9. A tightening sleeve 17 is fixedly installed on the inner side of the module mounting structure 11.

[0020] Please refer to this carefully. Figure 1 and Figure 2 Tighten the shaft of the drive motor 2 to fix the connection to the input end of the reducer 3. The reducer 3 is located behind the guide rail rod 7.

[0021] Specifically, the operation of the tightening drive motor 2 transmits power to the reducer 3, and the reducer 3 then transmits power to the drive rod 4.

[0022] Please refer to this carefully. Figure 2 and Figure 3 A push-pull cylinder 5 is fixedly installed on the inner side of the fixed base 1 above the sliding base plate 6. The front end of the piston rod of the push-pull cylinder 5 is fixedly connected to the guide rail rod 7. A switching handle 10 is integrally formed on the upper end of the sleeve mounting plate 9.

[0023] Specifically, the operation of the push-pull cylinder 5 drives the guide rod 7 to move back and forth, so that the drive rod 4 is connected or separated from the tightening sleeve 17. By switching the handle 10 to pull the sleeve mounting plate 9 up and down, the height of the module mounting structure 11 and the tightening sleeve 17 can be switched, so that the drive rod 4 can be connected to tightening sleeves 17 of different specifications.

[0024] Please refer to this carefully. Figure 2 and Figure 3 The module mounting structure 11 includes a fixing block 12, a mounting slot 13, a mounting block 14, a fixing collar 15, and a mounting sleeve 16. The fixing block 12 is fixedly mounted on one side of the sleeve mounting plate 9. The mounting slot 13 is opened on one side of the fixing block 12. The mounting block 14 is inserted into the mounting slot 13. The fixing collar 15 is integrally formed on one side of the mounting block 14. The mounting sleeve 16 is movably mounted on the inner side of the fixing collar 15.

[0025] Please refer to this carefully. Figure 2 and Figure 3 The mounting slot 13 and the mounting block 14 are both T-shaped. The mounting block 14 is inserted into the mounting slot 13 from the front and connected. The mounting sleeve 16 rotates around the fixing collar 15. Multiple fixing blocks 12 are arranged vertically around one side of the sleeve mounting plate 9.

[0026] Please refer to this carefully. Figures 1-4 The tightening sleeve 17 is fixedly installed inside the mounting clip 16, and the drive rod 4 is inserted into the rear end of the tightening sleeve 17 for mating connection.

[0027] Specifically, the tightening sleeve 17 is installed inside the mounting clamp 16. The drive rod 4 drives the tightening sleeve 17 to rotate. At the same time, the front end of the tightening sleeve 17 is connected to the screw head to tighten it. Meanwhile, the mounting clamp 16 rotates inside the fixing collar 15. The tightening sleeve 17 can be quickly disassembled and replaced through the insertion connection between the mounting block 14 and the mounting slot 13.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic tightening mechanism, comprising a fixed base (1), a tightening drive motor (2), and a reducer (3), wherein the tightening drive motor (2) and the reducer (3) are both fixedly mounted on the upper end of the fixed base (1), and the reducer (3) is located at the front end of the tightening drive motor (2), characterized in that: A drive rod (4) is fixedly installed at the front end of the output shaft of the reducer (3). A sliding base plate (6) is movably installed on the front inner side of the fixed base (1). A guide rail rod (7) is fixedly installed on the front upper end of the sliding base plate (6). A switching slider (8) is slidably installed on the outer side of the guide rail rod (7). A sleeve mounting plate (9) is fixedly installed on one side of the switching slider (8). Multiple module mounting structures (11) are fixedly installed on one side of the sleeve mounting plate (9). A tightening sleeve (17) is fixedly installed on the inner side of the module mounting structure (11).

2. The automatic tightening mechanism according to claim 1, characterized in that: The shaft of the tightening drive motor (2) is fixedly connected to the input end of the reducer (3), which is located behind the guide rail rod (7).

3. The automatic tightening mechanism according to claim 1, characterized in that: A push-pull cylinder (5) is fixedly installed on the inner side of the fixed base (1) above the sliding base plate (6). The piston rod of the push-pull cylinder (5) is fixedly connected to the guide rail rod (7). A switching handle (10) is integrally formed on the upper end of the sleeve mounting plate (9).

4. The automatic tightening mechanism according to claim 1, characterized in that: The module mounting structure (11) includes a fixing block (12), a mounting slot (13), a mounting block (14), a fixing collar (15), and a mounting clip (16). The fixing block (12) is fixedly mounted on one side of the sleeve mounting plate (9). The mounting slot (13) is opened on one side of the fixing block (12). The mounting block (14) is inserted into the mounting slot (13). The fixing collar (15) is integrally formed on one side of the mounting block (14). The mounting clip (16) is movably mounted on the inner side of the fixing collar (15).

5. The automatic tightening mechanism according to claim 4, characterized in that: The mounting slot (13) and mounting block (14) are both T-shaped. The mounting block (14) is inserted into the mounting slot (13) from the front and connected. The mounting sleeve (16) rotates around the fixing ring (15). Multiple fixing blocks (12) are arranged vertically around one side of the sleeve mounting plate (9).

6. An automatic tightening mechanism according to claim 3, characterized in that: The tightening sleeve (17) is fixedly installed on the inner side of the mounting clip (16), and the drive rod (4) is inserted into the rear end of the tightening sleeve (17) for mating connection.

Images