Nut electric motor fixed torque tightening tool

Abstract

This utility model discloses an electric torque-controlled nut tightening tool, relating to the field of electric nut tightening technology. It includes a gun body, a gun barrel fixedly connected to one side of the gun body, a gun head rotatably connected to the side of the gun barrel away from the gun body, a lithium battery snapped into the lower side of the gun body, a switch movably connected to the side of the gun body away from the lithium battery, a retaining ring connected to one side of the gun barrel, and an installation mechanism on one side of the retaining ring. This utility model, employing the above structure, installs multiple positioning components on the gun barrel. The positioning suction cups in the positioning components can closely adhere to the workpiece surface, providing support to the gun body from three different directions. This eliminates the need for the worker's manual strength to maintain gun body stability, significantly reducing the probability of gun body wobbling during operation. This allows the gun head to quickly and accurately align with the nut to be installed, reducing alignment adjustment time caused by wobbling and improving overall operating efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of electric nut gun technology, and specifically relates to an electric torque tightening tool for nuts. Background Technology

[0002] Electric nut tightening tools are mechanized tools powered by electricity for automatically or semi-automatically tightening and loosening nuts. They are widely used in construction, automobile manufacturing, home appliance assembly, and machinery repair, and can significantly replace manual operation, improving work efficiency and accuracy.

[0003] For example, Chinese patent CN217195120U discloses an electric nut tightening tool, including a housing, a fixed box, and a connector. An installation ring is installed on the inner wall of the housing. The inner wall of the housing is fixedly connected to the outer surface of the connector. The left side of the connector and the right side of the fixed box are provided with an insertion hole. A main rod is placed inside the insertion hole. A handle is installed on the left side of the main rod. Several fastening springs are installed on the inner top wall and the inner bottom wall of the fixed box.

[0004] While the aforementioned patent has solved the problem that some screw heads fall off the connection point during use, causing inconvenience, there are still some other defects that need improvement. Specifically, in actual operation, when workers use a nut gun to install nuts on the workpiece, the lack of an effective auxiliary positioning device makes it difficult to ensure that the gun remains stable throughout the operation using only hand strength. This easily leads to shaking, increasing the difficulty of installation, prolonging the operation time, and reducing work efficiency. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide an electric torque-controlled nut tightening tool to solve the problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] An electric torque-controlled nut tightening tool includes a gun body, a gun barrel fixedly connected to one side of the gun body, a gun head rotatably connected to the side of the gun barrel away from the gun body, a lithium battery snapped into the lower side of the gun body, a switch movably connected to the side of the gun body away from the lithium battery, a retaining ring connected to one side of the gun barrel, an installation mechanism provided on one side of the retaining ring, and three installation mechanisms provided, a positioning component provided on one side of the installation mechanism, and a fixing component provided on the side of the retaining ring away from the installation mechanism.

[0008] As a preferred technical solution, the positioning component includes a positioning suction cup, which is located on the gun body. A screw head is provided on one side of the positioning suction cup, and the screw head is connected to one side of the mounting mechanism. A fixing ring is fixedly connected between the screw head and the positioning suction cup, and an anti-slip strip is fixedly connected to the periphery of the fixing ring.

[0009] As a preferred technical solution, the installation mechanism includes an installation rod, which is fixedly connected to a retaining ring, and three installation rods are provided. A first support block is fixedly connected to one side of the installation rod, and a second support block is provided on one side of the first support block. A threaded groove is opened on the side of the second support block away from the first support block, and the threaded head is threadedly connected to the threaded groove. A telescopic component is provided between the first support block and the second support block.

[0010] As a preferred technical solution, the telescopic component includes a first spring, which is fixedly connected between a first support block and a second support block. A sleeve is fixedly connected to the side of the first support block near the second support block. The sleeve is located inside the first spring, and a sliding rod is slidably connected inside the sleeve. One side of the sliding rod is fixedly connected to one side of the second support block.

[0011] As a preferred technical solution, the fixing component includes a first connecting block, which is fixedly connected to one side of a retaining ring. A second connecting block is fixedly connected to the retaining ring near the first connecting block. One side of the first connecting block is movably connected to one side of the second connecting block. An insert is slidably connected inside the second connecting block. One side of the insert passes through the second connecting block and inserts into one side of the first connecting block. A second spring is fixedly connected to one side of the insert.

[0012] As a preferred technical solution, the insert block is fixedly connected to a pull rod inside the second spring, one side of the pull rod slides through the second connecting block, and a handle is fixedly connected to the top of the pull rod.

[0013] In summary, the present invention has the following main advantages:

[0014] First, this utility model, by installing multiple positioning components on the barrel, allows the positioning suction cup in the positioning components to fit tightly against the workpiece surface, providing support to the gun body from three different directions. This eliminates the need to rely solely on the worker's hand strength to maintain the stability of the gun body, significantly reducing the probability of the gun body shaking during operation. This enables the gun head to be quickly and accurately aligned with the nut to be installed, reducing the alignment adjustment time caused by shaking and improving overall operating efficiency.

[0015] Secondly, this utility model, by setting up an installation mechanism, can precisely limit the displacement direction of the positioning suction cup by sliding the slide rod in the sleeve as the gun head feeds, thus preventing the positioning suction cup from shifting or tilting. At the same time, the first spring deforms, and when the positioning suction cup no longer adheres to the object after the gun head finishes working, the first spring can restore the positioning suction cup to its initial position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation mechanism structure of this utility model;

[0018] Figure 3 This is a utility model Figure 2 A magnified structural diagram at point A;

[0019] Figure 4 This is a utility model Figure 2 A magnified structural diagram at point B.

[0020] Reference numerals: 1. Gun body; 2. Gun barrel; 3. Gun head; 4. Lithium battery; 5. Switch; 6. Positioning assembly; 61. Positioning suction cup; 62. Fixing ring; 63. Anti-slip strip; 64. Screw head; 7. Mounting mechanism; 71. Mounting rod; 72. First support block; 73. Second support block; 74. Screw groove; 75. Telescopic assembly; 751. First spring; 752. Slide rod; 753. Sleeve; 8. Snap ring; 9. Fixing assembly; 91. First connecting block; 92. Second connecting block; 93. Insert block; 94. Second spring; 95. Pull rod; 96. Handle. Detailed Implementation

[0021] Example

[0022] refer to Figures 1 to 4 The electric torque tightening tool for nuts described in this embodiment includes a gun body 1. A gun barrel 2 is fixedly connected to one side of the gun body 1. A gun head 3 is rotatably connected to the side of the gun barrel 2 away from the gun body 1. A lithium battery 4 is snapped into the lower side of the gun body 1. A switch 5 is movably connected to the side of the gun body 1 away from the lithium battery 4. A retaining ring 8 is connected to one side of the gun barrel 2. An installation mechanism 7 is provided on one side of the retaining ring 8, and there are three installation mechanisms 7. A positioning component 6 is provided on one side of the installation mechanism 7. A fixing component 9 is provided on the side of the retaining ring 8 away from the installation mechanism 7.

[0023] refer to Figure 3-4The positioning component 6 includes a positioning suction cup 61, which is located at the gun head 3. A screw head 64 is provided on one side of the positioning suction cup 61, and the screw head 64 is connected to one side of the mounting mechanism 7. A fixing ring 62 is fixedly connected between the screw head 64 and the positioning suction cup 61. An anti-slip strip 63 is fixedly connected to the periphery of the fixing ring 62. By setting the positioning component 6, the positioning suction cup 61 is connected to the mounting mechanism 7 via the screw head 64, thus fixing the positioning suction cup 61 to one side of the mounting mechanism 7. The positioning suction cup 61 adheres to the periphery of the object being mounted, eliminating the need for workers to rely solely on their hand strength to maintain the stability of the gun body 1. If the positioning suction cup 61 needs to be replaced, the operator holds the anti-slip strip 63 on the periphery of the fixing ring 62 and rotates the fixing ring 62 to rotate the screw head 64, causing the screw head 64 to unscrew from the screw groove 74, allowing the old suction cup to be removed. After replacing the new suction cup, the fixing ring 62 is rotated in the opposite direction to complete the installation.

[0024] refer to Figure 3 The mounting mechanism 7 includes mounting rods 71, which are fixedly connected to the retaining ring 8. There are three mounting rods 71. A first support block 72 is fixedly connected to one side of the mounting rod 71. A second support block 73 is provided on one side of the first support block 72. A threaded groove 74 is provided on the side of the second support block 73 away from the first support block 72. The screw head 64 is threadedly connected to the threaded groove 74. A telescopic component 75 is provided between the first support block 72 and the second support block 73. By setting the mounting mechanism 7, during operation, as the gun head 3 approaches the workpiece, the second support block 73 is subjected to the reaction force of the workpiece surface, which drives the telescopic component 75 to move. At the same time, the threaded groove 74 on the second support block 73 cooperates with the screw head 64 of the positioning suction cup 61 to ensure that the positioning suction cup 61 moves synchronously with the second support block 73 and always adheres to the workpiece surface.

[0025] refer to Figure 3 The telescopic assembly 75 includes a first spring 751, which is fixedly connected between a first support block 72 and a second support block 73. A sleeve 753 is fixedly connected to the side of the first support block 72 near the second support block 73. The sleeve 753 is located inside the first spring 751. A sliding rod 752 is slidably connected inside the sleeve 753. One side of the sliding rod 752 is fixedly connected to one side of the second support block 73. By setting the telescopic assembly 75, during operation, when the gun head 3 approaches the workpiece, the positioning suction cup 61 first contacts the workpiece surface. As the gun head 3 continues to feed, the workpiece generates a pushing force on the positioning suction cup 61, pushing the second support block 73 to move towards the first support block 72. At this time, the sliding rod 752 slides along the inner wall of the sleeve 753, facilitating the feeding of the gun head 3. The first spring 751 is compressed and deformed. After the operation is completed, the first spring 751 recovers its deformation, allowing the gun head 3 to return to its initial position.

[0026] refer to Figure 4The fixing component 9 includes a first connecting block 91, which is fixedly connected to one side of a retaining ring 8. A second connecting block 92 is fixedly connected to the retaining ring 8 near the first connecting block 91. One side of the first connecting block 91 is movably connected to one side of the second connecting block 92. An insert 93 is slidably connected inside the second connecting block 92. One side of the insert 93 passes through the second connecting block 92 and inserts into one side of the first connecting block 91. A second spring 94 is fixedly connected to one side of the insert 93, and the insert 93 is located at the second spring 94. A pull rod 95 is fixedly connected to the inner side of the barrel 2. One side of the pull rod 95 slides through the second connecting block 92. A handle 96 is fixedly connected to the top of the pull rod 95. By setting the fixing component 9, the handle 96 is pulled, the handle 96 drives the pull rod 95 to move, the pull rod 95 drives the insertion block 93 to move, the second spring 94 deforms, and then the retaining ring 8 is put on the outside of the barrel 2, so that the first connecting block 91 and the second connecting block 92 are close to each other and fit together. At this time, the handle 96 is released, the second spring 94 returns to its deformation, and pushes the insertion block 93 to insert into the first connecting block 91, thus completing the fixing.

[0027] Operating principle and advantages: When installing the retaining ring 8, first pull the handle 96. The handle 96 moves the pull rod 95, which in turn moves the insert block 93, causing the second spring 94 to deform. Then, place the retaining ring 8 on the outside of the barrel 2, allowing the first connecting block 91 and the second connecting block 92 to come close together. After releasing the handle 96, the second spring 94 returns to its original shape, pushing the insert block 93 into the first connecting block 91 to complete the fixing of the retaining ring 8. Connect the positioning suction cup 61 to the threaded groove 74 of the second support block 73 through the screw head 64, fixing the positioning suction cup 61 to one side of the mounting mechanism 7. If the suction cup needs to be replaced according to the workpiece material, simply hold the anti-slip strip 63 around the fixing ring 62 and rotate it to remove or install it. The anti-slip strip 63 increases friction and prevents slipping. Once ready, begin the operation. Hold the gun body 1 and align the gun head 3 with the workpiece to be installed. With the nut in position, press switch 5 to start the tool. As the nozzle 3 approaches the workpiece, the positioning suction cup 61 first contacts the workpiece surface, adhering to the workpiece's periphery. This eliminates the need for manual force to maintain the stability of the nozzle 1, reducing the probability of shaking. As the nozzle 3 continues to feed, the workpiece exerts a pushing force on the positioning suction cup 61, pushing the second support block 73 towards the first support block 72. At this time, the slide rod 752 in the telescopic assembly 75 slides along the inner wall of the sleeve 753, providing stable guidance for the nozzle 3's feed. Simultaneously, the first spring 751 is compressed and deformed. After the nut tightening operation is completed, release switch 5. The first spring 751 returns to its original deformation, causing the second support block 73, slide rod 752, and positioning suction cup 61 to reset. The nozzle 3 returns to its initial position, and the tool can be removed. Automatic reset eliminates the need for manual adjustment, improving work efficiency.

Claims

1. A nut tightening tool with constant torque, comprising a gun body (1), characterized in that: A gun barrel (2) is fixedly connected to one side of the gun body (1). A gun head (3) is rotatably connected to the side of the gun barrel (2) away from the gun body (1). A lithium battery (4) is snapped into the lower side of the gun body (1). A switch (5) is movably connected to the side of the gun body (1) away from the lithium battery (4). A retaining ring (8) is connected to one side of the gun barrel (2). An installation mechanism (7) is provided on one side of the retaining ring (8), and there are three installation mechanisms (7). A positioning component (6) is provided on one side of the installation mechanism (7). A fixing component (9) is provided on the side of the retaining ring (8) away from the installation mechanism (7).

2. The electric torque tightening tool for nuts according to claim 1, characterized in that: The positioning component (6) includes a positioning suction cup (61), which is located at the gun body (1). A screw head (64) is provided on one side of the positioning suction cup (61), and the screw head (64) is connected to one side of the mounting mechanism (7).

3. The electric torque tightening tool for nuts according to claim 2, characterized in that: A fixing ring (62) is fixedly connected between the screw head (64) and the positioning suction cup (61), and an anti-slip strip (63) is fixedly connected to the periphery of the fixing ring (62).

4. The electric torque tightening tool for nuts according to claim 2, characterized in that: The installation mechanism (7) includes an installation rod (71), which is fixedly connected to a retaining ring (8). There are three installation rods (71). A first support block (72) is fixedly connected to one side of the installation rod (71). A second support block (73) is provided on one side of the first support block (72). A threaded groove (74) is provided on the side of the second support block (73) away from the first support block (72). The screw head (64) is threadedly connected to the threaded groove (74). A telescopic component (75) is provided between the first support block (72) and the second support block (73).

5. The electric torque tightening tool for nuts according to claim 4, characterized in that: The telescopic assembly (75) includes a first spring (751), which is fixedly connected between a first support block (72) and a second support block (73). A sleeve (753) is fixedly connected to the side of the first support block (72) near the second support block (73). The sleeve (753) is located inside the first spring (751). A slide rod (752) is slidably connected inside the sleeve (753). One side of the slide rod (752) is fixedly connected to one side of the second support block (73).

6. The electric torque tightening tool for nuts according to claim 1, characterized in that: The fixing component (9) includes a first connecting block (91), which is fixedly connected to one side of the retaining ring (8). A second connecting block (92) is fixedly connected to one side of the retaining ring (8) near the first connecting block (91). One side of the first connecting block (91) is movably connected to one side of the second connecting block (92). An insert (93) is slidably connected inside the second connecting block (92). One side of the insert (93) passes through the second connecting block (92) and is inserted into one side of the first connecting block (91). A second spring (94) is fixedly connected to one side of the insert (93).

7. The electric torque tightening tool for nuts according to claim 6, characterized in that: The insert (93) is fixedly connected to the pull rod (95) inside the second spring (94). One side of the pull rod (95) slides through the second connecting block (92), and the top of the pull rod (95) is fixedly connected to the handle (96).

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