Mute lead screw with threaded gasket sound absorption structure

Abstract

The utility model discloses a mute screw rod with a threaded gasket sound absorption structure, which relates to the technical field of screw rods, and comprises a first support block, two slide rods and a second support block, and the two slide rods are fixedly connected between the first support block and the second support block; the mute screw rod with the threaded gasket sound absorption structure is provided with the shock absorption structure, when the main screw rod begins to rotate, an object is driven to move, due to inertia of the object, the screw rod moves in the direction opposite to the moving direction of the object, at the moment, a driven shaft compresses a shock absorption spring, and the shock absorption spring is driven to rotate; the vibration generated during movement of the main lead screw is absorbed, the driven shaft is driven through the two damping springs, so that the driven shaft is restored to the initial state in the rotating process, and the driven shaft is isolated from the first supporting block through the threaded gasket when being reset through the arrangement of the threaded gasket, so that the driven shaft is prevented from making contact with the first supporting block to generate vibration and sound in the resetting process.

Description

Technical Field

[0001] The utility model relates to the technical field of screw rods, in particular to a silent screw rod with a threaded gasket sound-absorbing structure. Background Art

[0002] The silent screw is a screw device specially designed to reduce noise and vibration. It effectively reduces the noise level generated during system operation by using special materials and precision processing technology, as well as noise reduction design and assembly technology.

[0003] For example, a high-precision silent ball screw with publication number CN218953947U comprises a rod body, a rotating column located on the outside of the rod body, and a vacuum groove located inside the rotating column shell, the rod body comprising: a mounting rod arranged at the middle position of both ends of the rod body, and a spiral groove arranged on the outer wall of the rod body, rotating rings are arranged at both ends of the outer side of the rotating column, and a rotating hole is arranged at the middle position inside the rotating column. The utility model can reduce the sound emitted from the screw through the vacuum groove, absorb the noise generated by the screw through the sound-absorbing cotton inside the vacuum groove, limit the sound-absorbing cotton through the limit rod, and suppress the transmission of the ball screw noise, make the steel ball and the rotating column roll through the rolling groove, and realize the left and right movement of the rotating column on the outside of the rod body through the mutual cooperation of the spiral groove and the steel ball, and avoid collision between the steel balls through the rolling groove, so that the use of the ball screw is more silent.

[0004] A high-precision silent ball screw in the above-mentioned comparative document uses a limit rod to limit the sound-absorbing cotton to suppress noise transmission, and the spiral groove cooperates with the steel ball to avoid steel ball collision, making the ball screw quieter. In the prior art, when the screw is started or stopped, the screw and the object it drives will move instantly, causing the screw and the object it drives to collide with the equipment due to their own inertia, causing noise. At the same time, it is not convenient to add lubricating oil to reduce the screw noise when the screw drives the object to move. Utility Model Content

[0005] The purpose of the utility model is to provide a silent screw with a threaded gasket sound-absorbing structure to solve the problem in the above-mentioned background technology that during the start or stop process of the screw, the screw and the object driven by itself will move instantly, causing the screw and the object driven by itself to collide with the equipment due to their own inertia and cause noise, and at the same time it is inconvenient to add lubricating oil to reduce the screw noise when the screw drives the object to move.

[0006] To achieve the above object, the utility model provides the following technical solution: a silent screw with a threaded gasket sound-absorbing structure, comprising a first support block, a slide rod, and a second support block, wherein two slide rods are provided, and the two slide rods are fixedly connected between the first support block and the second support block;

[0007] A fixing sleeve is fixedly connected inside the first support block, a shock absorbing structure is arranged inside the first support block, a driven shaft is arranged on the shock absorbing structure, and a connecting slide groove is arranged inside the driven shaft, the driven shaft is rotatably connected inside the first support block, a threaded gasket is arranged between the end of the driven shaft and the first support block, and a shock absorbing spring is arranged at one end away from the threaded gasket between the driven shaft and the first support block;

[0008] A driven structure driven by a screw rod is arranged on the outer side of the slide rod.

[0009] Preferably, two driven shafts are provided, and a main screw is fixedly connected between the two driven shafts, and the main screw is located between the first support block and the second support block.

[0010] Preferably, a motor is fixedly connected to a side of the first support block away from the driven shaft, a drive shaft is fixedly connected to an output end of the motor, and the drive shaft is slidably connected to the inside of the connecting slot.

[0011] Preferably, the driven structure includes a moving block slidably connected to the outside of the sliding rod, and two symmetrically distributed sliding holes are provided inside the moving block, and a moving ring is fixedly connected to the bottom of the moving block, and an oil storage tank is fixedly connected to one side of the moving block.

[0012] Preferably, an oil storage tank is fixedly connected to the interior of the moving ring, and the oil storage tank is spirally distributed inside the moving ring. A plurality of equidistantly distributed oil outlet holes are provided inside the moving ring, and the oil outlet holes are spirally distributed between the oil storage tanks.

[0013] Preferably, a drainage tube is fixedly connected to one side of the moving ring, and one end of the drainage tube is fixedly connected to the bottom of the oil storage tank, and the interior of the drainage tube is communicated with the interior of the oil storage tank. Two outlets are provided at one end of the drainage tube away from the oil storage tank, and the two outlets are communicated with the interior of the moving ring.

[0014] Preferably, two guide pipes are provided inside the moving ring, and the guide pipes are distributed in a spiral shape, and the ends of the two guide pipes are fixedly connected to the outlets of the two drainage pipes respectively, and a plurality of equidistantly distributed oil outlet pipes are provided inside the guide pipe, and the oil outlet pipes are distributed inside the guide pipe at a certain angle.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The silent screw with a threaded gasket sound-absorbing structure is provided with a shock-absorbing structure. When the main screw starts to rotate, it drives the object to move. Due to the inertia of the object, the screw is displaced in the opposite direction of the object's movement. At this time, the driven shaft compresses the shock-absorbing spring to absorb the vibration generated by the movement of the main screw. The driven shaft is driven by two shock-absorbing springs so that the driven shaft returns to its initial state during the rotation process. The threaded gasket is provided so that when the driven shaft is reset, it is isolated from the first support block through the threaded gasket, so as to prevent the driven shaft from contacting the first support block during the reset process to generate vibration and sound;

[0017] Furthermore, when the main screw rotates, it drives the moving block to move outside the two slide bars. During this process, the main screw drives the threads on its outside to move between the oil storage tanks and inside the moving ring, thereby driving the moving ring to move outside the main screw.

[0018] Furthermore, lubricating oil is added to the oil tank. When the moving ring rotates, the lubricating oil flows from the drainage pipe into the guide pipe, and then is discharged from the oil outlet pipe to the inside of the moving ring. The lubricating oil flows out from multiple oil outlet holes at the same time. When the thread on the outside of the main screw moves between the oil tank and the inside of the moving ring, the lubricating oil acts on the contact surface between the moving ring and the main screw, thereby reducing the noise when the main screw rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the driven shaft of the utility model;

[0021] Figure 3 This is a schematic diagram of the drive shaft structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the first support block of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the motion ring of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the flow guide tube of the utility model.

[0025] In the figure: 1. first support block; 2. slide rod; 3. second support block; 4. fixed sleeve; 5. motor; 6. drive shaft; 7. driven shaft; 8. connecting slide groove; 9. threaded gasket; 10. shock-absorbing spring; 11. main screw rod; 12. moving block; 13. slide hole; 14. moving ring; 15. oil storage tank; 16. oil outlet hole; 17. drainage pipe; 18. guide pipe; 19. oil outlet pipe. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In a further preferred embodiment of the present invention, Figure 1 - Figure 4 As shown, two slide rods 2 are provided, and the two slide rods 2 are fixedly connected between the first support block 1 and the second support block 3; a fixed sleeve 4 is fixedly connected inside the first support block 1, a shock-absorbing structure is arranged inside the first support block 1, a driven shaft 7 is arranged on the shock-absorbing structure, and a connecting slide groove 8 is arranged inside the driven shaft 7, the driven shaft 7 is rotatably connected to the inside of the first support block 1, and a threaded gasket 9 is arranged between the end of the driven shaft 7 and the first support block 1, and a shock-absorbing spring 10 is arranged at the end away from the threaded gasket 9 between the driven shaft 7 and the first support block 1; a driven structure driven by a screw rod is provided on the outside of the slide rod 2, two driven shafts 7 are provided, and a main screw rod 11 is fixedly connected between the two driven shafts 7, and the main screw rod 11 is located between the first support block 1 and the second support block 3, a motor 5 is fixedly connected to the side of the first support block 1 away from the driven shaft 7, a driving shaft 6 is fixedly connected to the output end of the motor 5, and the driving shaft 6 is slidably connected to the inside of the connecting slide groove 8;

[0028] First, start the motor 5 so that the output end of the motor 5 drives the driving shaft 6 to rotate. Since the driving shaft 6 is located inside the connecting groove 8, the driving shaft 6 drives the driven shaft 7 to rotate. During the rotation of the driven shaft 7, the driving shaft 6 drives the main screw 11 between the two driven shafts 7 to rotate accordingly. When the main screw 11 starts to rotate, it drives the object to move. Due to the inertia of the object, the screw is displaced in the opposite direction of the object's movement. At this time, the driven shaft 7 compresses the shock-absorbing spring 10 to absorb the vibration generated by the movement of the main screw 11. The driven shaft 7 is driven by the two shock-absorbing springs 10, so that the driven shaft 7 returns to its initial state during the rotation. The setting of the threaded gasket 9 makes the driven shaft 7 isolated from the first support block 1 through the threaded gasket 9 when it is reset, so as to prevent the driven shaft 7 from contacting the first support block 1 during the reset process to generate vibration and sound.

[0029] In a further preferred embodiment of the present invention, Figure 5 - Figure 6As shown, the driven structure includes a moving block 12 that is slidably connected to the outer side of the slide rod 2, and two symmetrically distributed sliding holes 13 are provided inside the moving block 12, and a moving ring 14 is fixedly connected to the bottom of the moving block 12, and an oil storage tank 15 is fixedly connected to one side of the moving block 12, and the moving ring 14 is fixedly connected to the oil storage tank 15, and the oil storage tank 15 is spirally distributed inside the moving ring 14, and a plurality of equidistantly distributed oil outlet holes 16 are provided inside the moving ring 14, and the oil outlet holes 16 are spirally distributed between the oil storage tanks 15, and a drainage is fixedly connected to one side of the moving ring 14 Tube 17, and one end of the drainage tube 17 is fixedly connected to the bottom of the oil storage tank 15, and the interior of the drainage tube 17 is communicated with the interior of the oil storage tank 15, and the end of the drainage tube 17 away from the oil storage tank 15 is provided with two outlets, and the two outlets are communicated with the interior of the movement ring 14, and two guide tubes 18 are provided inside the movement ring 14, and the guide tubes 18 are spirally distributed, and the ends of the two guide tubes 18 are respectively fixedly connected to the outlets of the two drainage tubes 17, and a plurality of equally distributed oil outlet pipes 19 are provided inside the guide tube 18, and the oil outlet pipes 19 are distributed inside the guide tube 18 at a certain angle;

[0030] When the main screw 11 rotates, it drives the moving block 12 to move outside the two slide bars 2. During this process, the main screw 11 drives the outer thread thereof to move between the oil storage tank 15 and inside the moving ring 14, thereby driving the moving ring 14 to move outside the main screw 11.

[0031] Lubricating oil is added to the oil tank 15. When the moving ring 14 rotates, the lubricating oil flows from the drainage pipe 17 into the guide pipe 18, and then is discharged from the oil outlet pipe 19 to the inside of the moving ring 14. The lubricating oil flows out from the multiple oil outlet holes 16 at the same time. When the thread on the outside of the main screw 11 moves between the oil tank 15 and the inside of the moving ring 14, the lubricating oil acts on the contact surface between the moving ring 14 and the main screw 11, thereby reducing the noise when the main screw 11 rotates.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A silent screw with a threaded gasket sound-absorbing structure, comprising a first support block (1), a slide rod (2), and a second support block (3), wherein two slide rods (2) are provided, and the two slide rods (2) are fixedly connected between the first support block (1) and the second support block (3); Features: A fixing sleeve (4) is fixedly connected inside the first support block (1), a shock absorbing structure is arranged inside the first support block (1), a driven shaft (7) is arranged on the shock absorbing structure, a connecting slide groove (8) is arranged inside the driven shaft (7), the driven shaft (7) is rotatably connected inside the first support block (1), a threaded gasket (9) is arranged between the end of the driven shaft (7) and the first support block (1), and a shock absorbing spring (10) is arranged at one end between the driven shaft (7) and the first support block (1) away from the threaded gasket (9); A driven structure driven by a screw rod is provided on the outer side of the slide rod (2).

2. A silent screw with a threaded gasket sound-absorbing structure according to claim 1, characterized in that: Two driven shafts (7) are provided, and a main screw rod (11) is fixedly connected between the two driven shafts (7), and the main screw rod (11) is located between the first support block (1) and the second support block (3).

3. The silent screw with a threaded gasket sound-absorbing structure according to claim 2, characterized in that: A motor (5) is fixedly connected to the side of the first support block (1) away from the driven shaft (7), and a drive shaft (6) is fixedly connected to the output end of the motor (5), and the drive shaft (6) is slidably connected to the inside of the connecting slide groove (8).

4. The silent screw with a threaded gasket sound-absorbing structure according to claim 3, characterized in that: The driven structure comprises a moving block (12) slidably connected to the outside of the sliding rod (2), two symmetrically distributed sliding holes (13) are provided inside the moving block (12), a moving ring (14) is fixedly connected to the bottom of the moving block (12), and an oil storage tank (15) is fixedly connected to one side of the moving block (12).

5. The silent screw with a threaded gasket sound-absorbing structure according to claim 4, characterized in that: An oil storage tank (15) is fixedly connected to the interior of the moving ring (14), and the oil storage tank (15) is spirally distributed inside the moving ring (14). A plurality of equidistantly distributed oil outlet holes (16) are provided inside the moving ring (14), and the oil outlet holes (16) are spirally distributed between the oil storage tanks (15).

6. The silent screw with a threaded gasket sound-absorbing structure according to claim 5, characterized in that: A drainage pipe (17) is fixedly connected to one side of the movement ring (14), and one end of the drainage pipe (17) is fixedly connected to the bottom of the oil storage tank (15), and the interior of the drainage pipe (17) is communicated with the interior of the oil storage tank (15). The end of the drainage pipe (17) away from the oil storage tank (15) is provided with two outlets, and the two outlets are communicated with the interior of the movement ring (14).

7. The silent screw with a threaded gasket sound-absorbing structure according to claim 6, characterized in that: Two flow guide pipes (18) are arranged inside the movement ring (14), and the flow guide pipes (18) are distributed in a spiral shape. The ends of the two flow guide pipes (18) are respectively fixedly connected to the outlets of the two drainage pipes (17). A plurality of oil outlet pipes (19) are arranged inside the flow guide pipe (18) and are distributed at a certain angle inside the flow guide pipe (18).

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