Linear motor with noise reduction function

Abstract

The invention discloses a linear motor with a noise reduction function, and particularly relates to the field of linear motors, the linear motor comprises a slide rail, a slide block is arranged on the slide rail, slide ways are arranged on two sides in the slide rail, ball conveyors are mounted on two sides of the slide block, and the two ball conveyors are respectively opposite to the two slide ways; the ball conveyor comprises two fixing blocks arranged at the two ends of the sliding block respectively, a conveying pipeline is fixedly installed between the two fixing blocks, the fixing blocks are provided with roller paths and sliding ways, and a plurality of balls are arranged in the roller paths and the conveying pipeline in a circulating rolling mode. The groove is formed in the bottom of the conveying pipeline, so that the lower joint line can move downwards to the bottom of the groove, friction between the lower joint line and the balls in the area of the groove is avoided, damage to the surfaces of the balls is reduced, noise generated during movement is reduced, and particularly when the conveying pipeline is arranged to be long, the friction reduction amplitude is larger, and the conveying pipeline is more stable. And the noise reduction amplitude is larger.

Description

Technical Field

[0001] The present invention relates to the technical field of linear motors, and more specifically, to a linear motor with a noise reduction function. Background Art

[0002] A linear motor is an electromagnetic device that converts electrical energy directly into linear motion. Its core principle is to generate thrust through the interaction between magnetic field and current, which can simplify the intermediate transmission mechanism and improve the response speed, stability and accuracy of the motion system. Linear motors are increasingly used in industries such as industry and transportation.

[0003] In the existing linear motor, a group of balls are symmetrically arranged on the left and right sides of the slider, a ball conveyor is arranged on the slider, and the balls circulate and roll in the ball conveyor and the slideway on the slide rail.

[0004] Since the balls need to turn during their circulating rolling, for ease of processing, the ball conveyor is usually divided into two symmetrical parts, which are then put together during assembly. However, when the two parts are put together, a joint line will appear at the joint position of the ball conveyor. When the balls roll inside, they will contact the joint line and cause friction. On the one hand, a large noise will be generated inside the ball conveyor. On the other hand, friction will cause damage to the ball surface. Especially in high-speed motion situations, after the surface is damaged, the noise will become louder both inside the ball conveyor and in the slideway on the slide rail. Summary of the invention

[0005] The linear motor with noise reduction function provided by the present invention aims to solve the problem that friction caused by contact between the ball and the joint line in the ball conveyor will generate relatively large noise and cause damage to the surface of the ball, which will increase the noise.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a linear motor with a noise reduction function, comprising a slide rail, a slider is arranged on the slide rail, slideways are arranged on both sides of the slide rail, ball conveyors are installed on both sides of the slider, and the two ball conveyors are respectively opposite to the two slideways; the ball conveyor comprises two fixed blocks respectively arranged at both ends of the slider, a conveying pipe is fixedly installed between the two fixed blocks, a roller track is provided on the fixed block, and a plurality of balls are arranged for circulating and rolling in the slideway, the roller track and the conveying pipe; the conveying pipe comprises an outer half pipe and an inner half pipe, and the outer half pipe and the inner half pipe are butt-jointed and fitted with each other to form an upper joint line and a lower joint line, the upper joint line and the lower joint line are respectively located on the upper side and the lower side of the conveying pipe, and a groove is provided at the lower side of the conveying pipe, so that the lower joint line at the groove position is located at the bottom position of the groove.

[0007] In a preferred embodiment, one end of the fixed block has a protrusion, which is movably inserted into the interior of the slideway. The raceway is an L-shaped structure, and the raceway is connected to the slideway at the position of the protrusion.

[0008] In a preferred embodiment, an annular groove is formed at one end of the fixing block close to the delivery pipe, and an inserting portion is provided at the end of the delivery pipe, and the inserting portion is inserted into the annular groove.

[0009] In a preferred embodiment, the inner diameter of the delivery pipe is 0.03-0.05 mm larger than the inner diameter of the ball, and the upper edges on both sides of the groove have rounded corners.

[0010] In a preferred embodiment, both sides of the conveying pipe are bent downward so that the conveying pipe forms an upper end, a lower inclined portion, a lower straight portion, a lower inclined portion, and an upper end in sequence from one end to the other, and the groove is located at the position of the lower straight portion, and the groove is used to accommodate lubricating oil.

[0011] In a preferred embodiment, both ends of the bottom of the slider are provided with slots, and the two fixed blocks of the ball conveyor are respectively fixedly installed in the two slots. The bottom of the slider has a water groove in the middle position, and the lower straight part is located inside the water groove. A sealing plate is fixedly installed at the bottom of the water groove, and the sealing plate closes the water groove.

[0012] In a preferred embodiment, the linear motor also includes an oil inlet assembly, which includes an oil inlet pipe, an oil outlet pipe, an oil storage tank and an oil pump. An oil inlet hole is opened at the bottom of the groove, and an oil outlet hole is opened at one side of the delivery pipe. The oil inlet hole is connected to the output end of the oil pump through the oil inlet pipe, the oil outlet hole is connected to the oil storage tank through the oil outlet pipe, and the input end of the oil pump is connected to the oil storage tank.

[0013] In a preferred embodiment, a support rod is fixedly installed inside the slide rail along the length direction of the slider, and the oil inlet pipe and the oil outlet pipe are both spirally wound around the support rod.

[0014] In a preferred embodiment, a through groove is opened at the upper end of the slider, and the support rod passes through the through groove. The oil inlet pipe and the oil outlet pipe pass through one end of the slider and then are wound upward on the support rod, and the oil inlet pipe and the oil outlet pipe pass through the slide rail from the end opposite to the end passing through the slider.

[0015] In a preferred embodiment, a stator is arranged at the bottom of the inner side of the slide rail, a mover is installed at the bottom of the slider, the slider slides on the slide rail, and a protective cover is provided on the upper end cover of the slide rail.

[0016] Technical effects and advantages of the present invention: The present invention arranges a groove at the bottom of the conveying pipe, so that the lower joint line can be moved down to the bottom of the groove to avoid friction between the lower joint line and the ball in the area of ​​the groove, thereby reducing damage to the surface of the ball and reducing noise during movement. Especially when the conveying pipe is arranged for a long time, the greater the degree of friction reduction, the greater the degree of noise reduction.

[0017] In the present invention, during the movement of the ball, the cooled lubricating oil is brought to other areas, which can cool other areas, thereby reducing the deformation of the inner diameter of the conveying pipeline and reducing friction and noise.

[0018] The present invention allows the oil inlet pipe and the oil outlet pipe to pass through the slide rail from the end opposite to the end passing through the slide block. When the oil inlet pipe and the oil outlet pipe are extended or shortened, they will be accommodated in the inside of the through groove and will not affect the stroke of the slide block. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 The internal structure of the present invention is shown in FIG. Figure 1 .

[0021] Figure 3 The internal structure of the present invention is shown in FIG. Figure 2 .

[0022] Figure 4 It is a schematic diagram of the installation of the slider and the sealing plate of the present invention.

[0023] Figure 5 For the present invention Figure 4 Exploded diagram.

[0024] Figure 6 It is a schematic diagram of the bottom structure of the slider of the present invention.

[0025] Figure 7 It is a schematic structural diagram of two groups of ball conveyors of the present invention.

[0026] Figure 8 It is a schematic structural diagram of the ball conveyor of the present invention.

[0027] Fig. 9 The cross-sectional view of the ball conveyor of the present invention Figure 1 .

[0028] Fig.10 The cross-sectional view of the ball conveyor of the present invention Figure 2 .

[0029] Fig.11 It is a schematic diagram of the delivery pipeline of the present invention.

[0030] Fig.12It is a schematic diagram of the structure of the outer half-pipe and the inner half-pipe of the present invention.

[0031] The accompanying drawings are marked as follows: 1. slide rail; 10. protective cover; 11. stator; 12. slideway; 2. slider; 21. mover; 22. slot; 23. water tank; 24. through slot; 3. ball conveyor; 31. fixed block; 310. protrusion; 311. raceway; 312. annular groove; 32. conveying pipe; 321. outer half pipe; 322. inner half pipe; 3201. upper end; 3202. lower inclined portion; 3203. lower straight portion; 33. upper joint line; 34. lower joint line; 35. groove; 351. fillet; 36. plug-in portion; 37. oil inlet hole; 38. oil outlet hole; 4. ball; 5. oil inlet assembly; 51. oil inlet pipe; 52. oil outlet pipe; 53. oil storage tank; 54. oil pump; 6. support rod; 7. sealing plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Refer to the instruction manual Figure 1-Figure 12 A linear motor with noise reduction function includes a slide rail 1, a slider 2 is arranged on the slide rail 1, a stator 11 is arranged at the bottom of the inner side of the slide rail 1, a mover 21 is installed at the bottom of the slider 2, and the slider 2 slides on the slide rail 1. The driving of the linear motor is a relatively mature technology and will not be described in detail here.

[0034] In this embodiment, both sides of the slide rail 1 are provided with slideways 12, and both sides of the slider 2 are provided with ball conveyors 3, and the two ball conveyors 3 are respectively opposite to the two slideways 12; the ball conveyor 3 includes two fixed blocks 31 respectively arranged at both ends of the slider 2, and a conveying pipe 32 is fixedly installed between the two fixed blocks 31, and a rolling track 311 is provided on the fixed block 31, and a plurality of balls 4 are provided for circulating and rolling in the slideway 12, the rolling track 311 and the conveying pipe 32; the conveying pipe 32 includes an outer half pipe 321 and an inner half pipe 322, and the outer half pipe 321 and the inner half pipe 322 are butt-joined to form an upper joint line 33 and a lower joint line 34, and the upper joint line 33 and the lower joint line 34 are respectively located on the upper side and the lower side of the conveying pipe 32, and a groove 35 is provided at the lower side of the conveying pipe 32, so that the lower joint line 34 at the position of the groove 35 is located at the bottom position of the groove 35.

[0035] It should be noted that the conveying pipe 32 is made of metal and is not suitable for being formed by pipe bending. If it is formed by pipe bending, the bending accuracy cannot be guaranteed, and the inner diameter accuracy of the pipe cannot be guaranteed at the bending position. Therefore, the conveying pipe 32 needs to be divided into an outer half pipe 321 and an inner half pipe 322, which are processed separately by a machining center and then merged together during assembly. Therefore, there will be two joining lines. In the present embodiment, the two joining lines are an upper joining line 33 and a lower joining line 34. In order to ensure that the ball 4 can roll smoothly inside the conveying pipe 32, generally speaking, the method of making the inner diameter of the conveying pipe 32 slightly larger than the inner diameter of the ball 4 is adopted. Specifically, in the present embodiment, the inner diameter of the conveying pipe 32 is 0.03-0.05 mm larger than the inner diameter of the ball 4. Since the inner diameter of the conveying pipe 32 is larger than the inner diameter of the ball 4, the joint line where the ball 4 contacts the conveying pipe 32 is mainly the lower joint line 34. Therefore, when the path length of the conveying pipe 32 is constant, shortening the contact stroke of the ball 4 and the conveying pipe 32 can effectively reduce the friction generated when the ball 4 contacts the lower joint line 34, thereby reducing the damage to the surface of the ball 4 and reducing the noise during movement. In the present embodiment, a groove 35 is opened at the lower side position inside the conveying pipe 32, so that the lower joint line 34 can be moved down to the bottom of the groove 35. In this way, in the area of ​​the groove 35, the friction between the lower joint line 34 and the ball 4 can be avoided.

[0036] In this embodiment, upper edges on both sides of the groove 35 have rounded corners 351 .

[0037] It should be noted that, in order to prevent the two edges of the upper end of the groove 35 from generating friction with the ball 4, the corners 351 are rounded. In addition, in order to prevent the two ends of the groove 35 from generating friction with the ball 4, the two ends of the groove 35 can also be rounded.

[0038] Furthermore, one end of the fixing block 31 has a protrusion 310 , which is movably inserted into the interior of the slideway 12 . The raceway 311 is an L-shaped structure, and the raceway 311 is connected to the slideway 12 at the position of the protrusion 310 .

[0039] It should be noted that if Fig. 9 As shown, the end of the raceway 311 at the position of the protrusion 310 faces the slideway 12, so that the balls 4 in the slideway 12 can easily enter the raceway 311 or the balls 4 in the raceway 311 can easily enter the slideway 12.

[0040] In this embodiment, the implementation method is as follows: when the linear motor is working, the slider 2 slides on the slide rail 1. During this process, Fig. 9As shown, taking the counterclockwise movement direction of the ball 4 as an example, when the ball 4 rolls in the slideway 12, it enters the roller track 311 from the protrusion 310 on the left, then enters the inside of the conveying pipe 32 from the roller track 311, then enters the inside of the roller track 311 on the right from the conveying pipe 32, and finally enters the slideway 12 from the protrusion 310 on the right, thus completing a cycle. During the movement of the ball 4 in the conveying pipe 32, due to the setting of the groove 35, the ball 4 cannot contact the lower joint line 34 in the area of ​​the groove 35, and the edges on both sides of the upper end of the groove 35 are both provided with rounded corners 351. Therefore, the ball 4 cannot generate friction with the lower joint line 34 in the area of ​​the bottom groove 35 of the conveying pipe 32, thereby reducing the damage to the surface of the ball 4 and reducing the noise during movement. When the conveying pipe 32 is set longer, the proportion of the groove 35 to the length of the conveying pipe 32 is larger, and the magnitude of reducing friction is also greater.

[0041] The above technical solution allows the lower joining line 34 to move down to the bottom of the groove 35 by setting a groove 35 at the bottom of the conveying pipe 32, so as to avoid friction between the lower joining line 34 and the ball 4 in the area of ​​the groove 35, thereby reducing damage to the surface of the ball 4 and reducing noise during movement. Especially when the conveying pipe 32 is set longer, the greater the degree of friction reduction, the greater the degree of noise reduction.

[0042] Furthermore, if Fig. 9 As shown, an annular groove 312 is formed at one end of the fixing block 31 close to the delivery pipe 32 , and an inserting portion 36 is formed at the end of the delivery pipe 32 , and the inserting portion 36 is inserted into the annular groove 312 .

[0043] It should be noted that the method of inserting the plug-in portion 36 into the annular groove 312 to dock the fixing block 31 and the conveying pipe 32 can ensure the docking accuracy of the raceway 311 and the conveying pipe 32 to reduce friction.

[0044] Refer to the instruction manual Figure 5-Figure 12 In the case of high speed and heavy load, the ball 4 will generate huge noise when moving. This is because the amount of lubricating oil provided by the traditional lubrication method is insufficient. When the lubricating oil is insufficient, the thickness of the oil film decreases, and the noise becomes louder. The traditional method is to open an oil groove along the length direction of the inner surface of the conveying pipe 32, and the lubricating oil slowly penetrates into the conveying pipe 32. In this embodiment, the following technical solution is further proposed.

[0045] Specifically, both sides of the delivery pipe 32 are bent downward, so that the delivery pipe 32 forms an upper end 3201, a lower inclined portion 3202, a lower straight portion 3203, a lower inclined portion 3202, and an upper end 3201 from one end to the other, and the groove 35 is located at the position of the lower straight portion 3203, and the groove 35 is used to accommodate lubricating oil.

[0046] It should be noted that by bending both sides of the delivery pipe 32 downward, the groove 35 in the lower straight portion 3203 can store lubricating oil, and the lubricating oil can be higher than the groove 35. In this way, when the ball 4 rolls in the delivery pipe 32, a part of the volume can directly contact the lubricating oil. During the rolling process of the ball 4, the lubricating oil can fully contact the surface of the ball 4, so that the surface of the ball 4 has more lubricating oil and the oil film is thicker, so that the noise in high-speed and heavy-load situations can be reduced.

[0047] Refer to the instruction manual Figure 5-Figure 12 In the case of high speed and heavy load, the ball 4 moves at high speed, which will generate a lot of heat. The inner diameter of the conveying pipe 32 will be reduced due to the heat, and the ball 4 will have a large movement resistance, which will easily cause sliding friction with the inner surface of the conveying pipe 32, thereby increasing noise. In this embodiment, the following technical solution is further proposed.

[0048] Specifically, both ends of the bottom of the slider 2 are provided with a slot 22, and the two fixing blocks 31 of the ball conveyor 3 are respectively fixedly installed in the two slots 22. The bottom of the slider 2 has a water tank 23 in the middle position, and the lower straight portion 3203 is located inside the water tank 23. A sealing plate 7 is fixedly installed at the bottom of the water tank 23, and the sealing plate 7 closes the water tank 23.

[0049] It should be noted that cooling water is installed inside the water tank 23, and the sealing plate 7 seals the cooling water inside the water tank 23. The lower straight portion 3203 is located inside the water tank 23, so that the cooling water can cool the lower straight portion 3203 area. During the movement of the ball 4, since there is a large amount of lubricating oil on the surface of the ball 4, the cooled lubricating oil is brought to other areas, which can cool other areas, thereby reducing the deformation of the inner diameter size of the conveying pipe 32 to reduce friction and noise.

[0050] Refer to the instruction manual Figure 1-Figure 3 , Figure 6-Figure 7 , Fig.10 Since the part that needs to be added with lubricating oil is a moving part, the prior art requires stopping the machine for adding the lubricating oil, which affects the work progress. In this embodiment, the following technical solution is further proposed.

[0051] Specifically, the linear motor is also provided with an oil inlet assembly 5, which includes an oil inlet pipe 51, an oil outlet pipe 52, an oil storage tank 53 and an oil pump 54. An oil inlet hole 37 is opened at the bottom position of the groove 35, and an oil outlet hole 38 is opened at one side position of the delivery pipe 32. The oil inlet hole 37 is connected to the output end of the oil pump 54 through the oil inlet pipe 51, the oil outlet hole 38 is connected to the oil storage tank 53 through the oil outlet pipe 52, and the input end of the oil pump 54 is connected to the oil storage tank 53.

[0052] It should be noted that the oil inlet pipe 51 and the oil outlet pipe 52 are both transparent plastic pipes. The lubricating oil in the oil tank 53 enters the interior of the groove 35 through the oil pump 54, the oil inlet pipe 51 and the oil inlet hole 37 in sequence. If the lubricating oil in the groove 35 reaches the oil outlet hole 38, the lubricating oil will return to the interior of the oil tank 53 from the oil outlet pipe 52. Therefore, when adding lubricating oil, the method of observing the oil outlet pipe 52 can be used to determine whether the lubricating oil is full, that is, to observe whether there are a large number of bubbles in the oil outlet pipe 52. If there are a large number of bubbles, it can be determined that the lubricating oil is insufficient. If there are only a small number of bubbles, it can be determined that the lubricating oil is sufficient. When it is necessary to add lubricating oil, start the oil pump 54 and observe the bubbles in the oil outlet pipe 52 without stopping the machine.

[0053] Furthermore, if Figure 2 and Figure 3 As shown, since the slider 2 is moving, the oil inlet pipe 51 and the oil outlet pipe 52 need to be continuously extended and shortened. Specifically, a support rod 6 is fixedly installed inside the slide rail 1 along the length direction of the slider 2, and the oil inlet pipe 51 and the oil outlet pipe 52 are both spirally wound around the support rod 6.

[0054] It should be noted that the support rod 6 supports the oil inlet pipe 51 and the oil outlet pipe 52 , and the spirally arranged oil inlet pipe 51 can extend and shorten during the movement of the slider 2 .

[0055] Refer to the instruction manual Figure 2 and Figure 3 If the oil inlet pipe 51 and the oil outlet pipe 52 pass through the slider 2 and then directly pass through the outside of the slide rail 1, then due to the existence of the oil inlet pipe 51 and the oil outlet pipe 52, they will be clamped between the slider 2 and the end of the slide rail 1, that is, they will affect the stroke of the slider 2. Therefore, the following technical solution is proposed.

[0056] Specifically, a through groove 24 is opened at the upper end of the slider 2, and the support rod 6 passes through the through groove 24. The oil inlet pipe 51 and the oil outlet pipe 52 pass through one end of the slider 2 and then wrap upward around the support rod 6, and the oil inlet pipe 51 and the oil outlet pipe 52 pass through the slide rail 1 from the end opposite to the end passing through the slider 2.

[0057] It should be noted that Figure 2 For example, after the oil inlet pipe 51 and the oil outlet pipe 52 pass through the left side of the slider 2, they pass upward through the through groove 24 and then pass through the right side of the slide rail 1. In this way, when the slider 2 moves left and right, the oil inlet pipe 51 and the oil outlet pipe 52 will be accommodated in the inside of the through groove 24 when they are extended or shortened, and will not affect the stroke of the slider 2.

[0058] Furthermore, if Figure 1 As shown, the upper end cover of the slide rail 1 is provided with a protective cover 10 .

[0059] It should be noted that the protective cover 10 can play a certain dust-proof role and cover the oil inlet pipe 51 and the oil outlet pipe 52 to make the linear motor more concise and beautiful.

[0060] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A linear motor with noise reduction function, characterized in that: The slide rail (1) comprises a slide block (2) arranged on the slide rail (1), slideways (12) are provided on both sides of the slide rail (1), ball conveyors (3) are installed on both sides of the slide block (2), and the two ball conveyors (3) are respectively opposite to the two slideways (12); The ball conveyor (3) comprises two fixed blocks (31) respectively arranged at two ends of the slide block (2); a conveying pipe (32) is fixedly installed between the two fixed blocks (31); a rolling track (311) is provided on the fixed block (31); and a plurality of balls (4) are arranged to roll in a circulating manner in the slideway (12), the rolling track (311) and the conveying pipe (32); The conveying pipe (32) comprises an outer half pipe (321) and an inner half pipe (322); the outer half pipe (321) and the inner half pipe (322) are butted against each other to form an upper joint line (33) and a lower joint line (34); the upper joint line (33) and the lower joint line (34) are respectively located on the upper side and the lower side of the conveying pipe (32); a groove (35) is provided at the lower side of the conveying pipe (32), so that the lower joint line (34) at the position of the groove (35) is located at the bottom of the groove (35).

2. A linear motor with noise reduction function according to claim 1, characterized in that: One end of the fixing block (31) has a protruding portion (310), the protruding portion (310) is movably inserted into the interior of the slideway (12), the rolling track (311) is an L-shaped structure, and the rolling track (311) is connected to the slideway (12) at the position of the protruding portion (310).

3. The linear motor with noise reduction function according to claim 1, characterized in that: An annular groove (312) is formed at one end of the fixing block (31) close to the delivery pipe (32), and an inserting portion (36) is provided at the end of the delivery pipe (32), wherein the inserting portion (36) is inserted into the annular groove (312).

4. The linear motor with noise reduction function according to claim 1, characterized in that: The inner diameter of the delivery pipe (32) is 0.03-0.05 mm larger than the inner diameter of the ball (4), and the upper edges on both sides of the groove (35) have rounded corners (351).

5. The linear motor with noise reduction function according to claim 1, characterized in that: Both sides of the delivery pipe (32) are bent downward, so that the delivery pipe (32) forms an upper end portion (3201), a lower inclined portion (3202), a lower straight portion (3203), a lower inclined portion (3202), and an upper end portion (3201) in sequence from one end to the other end, and the groove (35) is located at the position of the lower straight portion (3203), and the groove (35) is used to accommodate lubricating oil.

6. The linear motor with noise reduction function according to claim 5, characterized in that: Both ends of the bottom of the slider (2) are provided with a slot (22), and the two fixing blocks (31) of the ball conveyor (3) are respectively fixedly mounted in the two slots (22). The bottom of the slider (2) has a water tank (23) in the middle, and the lower straight portion (3203) is located inside the water tank (23). A sealing plate (7) is fixedly mounted on the bottom of the water tank (23), and the sealing plate (7) seals the water tank (23).

7. The linear motor with noise reduction function according to claim 6, characterized in that: The linear motor further comprises an oil inlet assembly (5), the oil inlet assembly (5) comprising an oil inlet pipe (51), an oil outlet pipe (52), an oil storage tank (53) and an oil pump (54); an oil inlet hole (37) is provided at the bottom of the groove (35); an oil outlet hole (38) is provided at one side of the delivery pipe (32); the oil inlet hole (37) is connected to the output end of the oil pump (54) through the oil inlet pipe (51); the oil outlet hole (38) is connected to the oil storage tank (53) through the oil outlet pipe (52); and the input end of the oil pump (54) is connected to the oil storage tank (53).

8. The linear motor with noise reduction function according to claim 7, characterized in that: A support rod (6) is fixedly mounted inside the slide rail (1) along the length direction of the slide block (2), and the oil inlet pipe (51) and the oil outlet pipe (52) are both spirally wound around the support rod (6).

9. The linear motor with noise reduction function according to claim 8, characterized in that: The upper end of the slider (2) is provided with a through slot (24), the support rod (6) passes through the through slot (24), the oil inlet pipe (51) and the oil outlet pipe (52) pass through one end of the slider (2) and are wound upwards around the support rod (6), and the oil inlet pipe (51) and the oil outlet pipe (52) pass through the slide rail (1) from the end opposite to the end passing through the slider (2).

10. The linear motor with noise reduction function according to claim 1, characterized in that: A stator (11) is arranged at the bottom of the inner side of the slide rail (1), a mover (21) is installed at the bottom of the slider (2), the slider (2) slides on the slide rail (1), and the upper end cover of the slide rail (1) is provided with a protective cover (10).

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