Motor transmission device with anti-vibration function

Abstract

The utility model discloses a motor transmission device with an anti-vibration function, which comprises a driving motor and a transmission part, the driving motor is provided with a motor body and a motor shaft, the transmission part comprises a transmission shell and a transmission core, the transmission shell is provided with a first end and a second end, a transmission cavity is arranged in the transmission shell, and the transmission core is connected to the transmission cavity in a penetrating manner. The transmission shaft is connected with the transmission shell; the first end of the transmission shell sleeves the end part of the motor body, so that the motor shaft extends into the transmission cavity and is connected with the transmission core; a first sealing structure is arranged on the peripheral edge of the end portion of the first end, a second sealing structure is arranged on the peripheral edge of the end portion of the motor body, and the first sealing structure and the second sealing structure are connected in an inserted mode and are in running fit. According to the motor transmission device with the anti-vibration function, the first sealing structure of the transmission part is in sealing fit with the second sealing structure of the driving motor, so that the transmission connection position of the connection position is sealed, and the vibration of the motor is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of woodworking processing equipment, in particular to a motor transmission device with an anti-vibration function. Background Art

[0002] In woodworking processing equipment, for example, the CNC five-axis mortise and tenon machine has a high-speed mechanical spindle driven by a belt. Generally, the left motor drives three spindles, and the right motor drives two spindles for processing. The motor pulley of the "one-to-three" is relatively large in height. Compared with the belt-driven "one-to-one", the tension at the motor shaft end is increased by about three times, resulting in insufficient rigidity of the motor shaft, which may cause disturbance and breakage.

[0003] During the processing, there will be a lot of dust and wood chips, which will affect the high-speed rotating transmission structure. For example, the accumulation of dust and wood chips will affect the high-speed rotating parts, causing momentum imbalance and vibration. In addition, the rigidity of the rotating shaft, the size of the load, the material of the high-speed rotating parts and the level of imbalance will affect the vibration of the machine. Utility Model Content

[0004] In order to overcome at least one of the defects described in the above-mentioned prior art, the utility model provides a motor transmission device with an anti-vibration function, which can be sealed by a first sealing structure of the transmission member and a second sealing structure of the driving motor to achieve connection position transmission and connection position sealing, thereby reducing motor vibration.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A motor transmission device with an anti-vibration function comprises a drive motor and a transmission member, wherein the drive motor has a motor body and a motor shaft, and the transmission member comprises a transmission housing and a transmission core, wherein the transmission housing is provided with a first end and a second end, and a transmission cavity is provided in the transmission housing, and the transmission core is connected to the transmission cavity and is connected to the transmission housing; the first end of the transmission housing is sleeved on the end of the motor body so that the motor shaft extends into the transmission cavity and is connected to the transmission core; a first sealing structure is provided on the outer peripheral edge of the end of the first end, and a second sealing structure is provided on the outer peripheral edge of the end of the motor body, and the first sealing structure and the second sealing structure are plug-connected and rotationally matched.

[0007] Furthermore, a sealing boss is provided on the outer circumferential edge of the end portion of the first end, the inner ring of the sealing boss is provided with a first sealing step, and the outer ring of the sealing boss is provided with a second sealing step; a sealing groove is provided at the end portion of the motor body, the inner ring of the sealing groove has a first sealing side wall, and the outer ring of the sealing groove has a second sealing side wall, and the sealing boss is inserted into the sealing groove so that the first sealing step abuts against the first sealing side wall, and the second sealing step abuts against the second sealing side wall.

[0008] Furthermore, the first sealing step and the second sealing step are distributed in an alternating manner in the axial direction of the transmission housing; and the second sealing side wall and the first sealing side wall are distributed in an alternating manner in the axial direction of the motor shaft.

[0009] Furthermore, an end cover extending toward the transmission cavity is provided at the end of the motor body, and the motor shaft extends into the transmission cavity through the end cover; and the second sealing structure is arranged around the outer periphery of the end cover.

[0010] Furthermore, a guide cone surface is provided on the outer circumference of the end cover, and the outer diameter of the guide cone surface gradually decreases from top to bottom.

[0011] Furthermore, a partition is provided in the transmission housing, the partition is provided with a through hole, the transmission core is connected to the through hole, and a mounting ring is provided on the outer periphery of the transmission core, and the mounting ring is used to connect with the partition after the transmission core is connected to the through hole.

[0012] Furthermore, the partition divides the transmission cavity into a first cavity section and a second cavity section, the axial height of the first cavity section is greater than the axial height of the second cavity section; the motor shaft extends into the first cavity section through the first end and is connected to the top end of the transmission core, so that the center of gravity of the transmission core is concentrated in the first cavity section.

[0013] Furthermore, the bottom end of the second cavity section is sealed with a cover plate; the cover plate is made of a sealant material.

[0014] Furthermore, the transmission housing is made of cast aluminum material.

[0015] Furthermore, a first keyway is provided on the outer surface of the motor shaft, and a second keyway is provided on the inner surface of the transmission core. The first keyway and the second keyway are arranged opposite to each other and are embedded with flat keys.

[0016] In summary, the utility model has the following technical effects: the transmission housing and the end of the motor body are sealed with the first sealing structure and the second sealing structure, so that the end of the motor housing and the first end of the transmission housing are sealed with an interlaced plug-in fit in a plug-in fit manner to achieve dust prevention, prevent dust from entering the transmission cavity through the assembly gap and causing accumulation of dust and wood chips, and prevent the accumulation of dust and wood chips from affecting high-speed rotating parts, thereby reducing vibration caused by momentum imbalance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the motor transmission device of the utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of the motor transmission device of the utility model;

[0019] Figure 3 It is a schematic diagram of the exploded structure of the motor transmission device of the utility model from another perspective;

[0020] Figure 4 It is a cross-sectional view of the motor transmission device of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a driving motor of the motor transmission device of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the transmission housing of the motor transmission device of the utility model.

[0023] Among them, the meanings of the figure marks are as follows: 10, driving motor; 11, motor shaft; 111, first keyway; 12, end cover; 121, guide cone; 20, transmission member; 21, transmission housing; 211, sealing boss; 212, first cavity section; 213, second cavity section; 214, partition; 22, transmission core; 221, mounting ring; 30, cover plate; 40, flat key; 50, sealing film. DETAILED DESCRIPTION

[0024] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] See also Figure 1-Figure 6 The utility model discloses a motor transmission device with anti-vibration function, including a driving motor 10 and a transmission member 20, the driving motor 10 has a motor body and a motor shaft 11, the transmission member 20 includes a transmission housing 21 and a transmission core 22, and the transmission housing 21 is provided with a first end and a second end, a transmission cavity is provided in the transmission housing 21, the transmission core 22 is connected to the transmission cavity, and the transmission core 22 is connected to the transmission housing.

[0028] Specifically, the first end of the transmission housing 21 is sleeved on the end of the motor body. After the first end of the transmission housing 21 is sleeved on the end of the motor body, the motor shaft 11 extending from the end of the motor body can be extended into the transmission cavity and connected with the transmission core 22. In addition, a first sealing structure is provided on the outer periphery of the end of the first end, and a second sealing structure is provided on the outer periphery of the end of the motor body. The first sealing structure is plug-connected with the second sealing structure and rotates in cooperation.

[0029] Based on the above structure, the motor transmission device with anti-vibration function of the utility model can be applied to woodworking processing equipment to drive the processing knife to rotate. Specifically, a transmission structure such as a belt can be set outside the transmission housing 21 to drive the processing knife to rotate.

[0030] During the processing, wood chips and the like will be generated. Therefore, in this embodiment, the motor shaft 11 is located in the transmission cavity of the transmission housing to avoid dust chips from accumulating on the surface of the motor shaft 11, and the imbalance caused by dust chips accumulating on the surface of the motor shaft 11 can be reduced. In this embodiment, the transmission housing 21 and the end of the motor body are sealed by a first sealing structure and a second sealing structure, so that the end of the motor housing and the first end of the transmission housing are sealed by plug-in fitting, so as to achieve dust prevention, prevent dust chips from entering the transmission cavity through the assembly gap to cause the accumulation of dust and wood chips, and prevent the accumulation of dust and wood chips from affecting high-speed rotating parts, so as to reduce the vibration caused by momentum imbalance.

[0031] Furthermore, a sealing boss 211 may be provided on the outer circumferential edge of the end of the first end, and the inner circle of the sealing boss 211 may be provided with a first sealing step, and the outer circle of the sealing boss 211 may be provided with a second sealing step, that is, the first sealing step and the second sealing step are distributed inside and outside the sealing boss 211.

[0032] In addition, a sealing groove is provided at the end of the motor body, the inner ring of the sealing groove has a first sealing side wall, and the outer ring of the sealing groove has a second sealing side wall. In this way, when the first end of the transmission housing and the end of the motor body are sealed and assembled, the sealing boss 211 can be inserted into the sealing groove so that the first sealing step abuts against the first sealing side wall, and the second sealing step abuts against the second sealing side wall.

[0033] After the transmission housing and the motor body are plugged in, from the outside to the inside, the second sealing step and the second sealing side wall abut against each other to achieve the first layer of dust blocking. After that, the sealing boss 211 and the sealing groove are plugged in to achieve the second layer of dust blocking. After that, the first sealing step and the first sealing side wall perform the third layer of dust blocking. In this way, dust is blocked layer by layer, and the dust can only enter through the assembly gap between the second sealing step and the second sealing side wall. Even after entering, it can be blocked by the sealing boss 211 and then blocked by the first sealing side wall, thus forming a better sealing effect.

[0034] More specifically, the first sealing step and the second sealing step are staggered in height in the axial direction of the transmission housing 21, and the second sealing side wall and the first sealing side wall are staggered in height in the axial direction of the motor shaft 11. In this way, the second sealing side wall and the second sealing step on the outside are located at a lower position in the axial direction after they abut against each other, while the first sealing side wall and the first sealing step on the inside are located at a higher position in the axial direction after they abut against each other, that is, after the ends of the transmission housing and the motor body are assembled, the assembly gaps from the outside to the inside are highly staggered in the axial direction, and in this way, the assembly gaps are staggered, and even if dust enters from the outside, it can be blocked by the staggered inner sealing structure, so that the sealing effect achieved is better.

[0035] Furthermore, an end cover 12 may be provided at the end of the motor body, the end cover 12 extends toward the transmission cavity, the motor shaft 11 extends into the transmission cavity through the end cover 12, and the second sealing structure is arranged around the outer periphery of the end cover 12. In this way, after the end of the motor body is assembled with the first end of the transmission housing, the end cover 12 extends into the transmission cavity, and the motor shaft 11 can be rotatably connected to the inside of the end cover 12 through a bearing, so that the axial gravity of the motor shaft 11 is concentrated inside the end cover 12, and the belt tension connected to the transmission housing is close to the bearing inside the end cover 12, so that the belt tension balance performance outside the transmission housing is better, avoiding insufficient rigidity of the motor shaft 11, and further improving the anti-vibration performance.

[0036] Furthermore, a guide cone 121 may be provided on the outer peripheral edge of the end cover 12, and the outer diameter of the guide cone 121 gradually decreases from top to bottom. In this way, even if dust accumulates on the surface of the end cover 12 extending into the transmission cavity, it can slide down under the guidance of the guide cone 121 and will not be directly accumulated on the surface of the motor shaft 11, thereby reducing the vibration of the motor shaft 11 caused by dust accumulation.

[0037] Furthermore, a partition 214 is provided in the transmission housing 21, and a through hole is correspondingly provided on the partition 214, and the transmission core 22 is connected to the through hole. A mounting ring 221 is provided on the outer periphery of the transmission core 22, and the mounting ring 221 is used to connect with the partition 214 after the transmission core 22 is connected to the through hole. In this way, the mounting ring 221 of the transmission core 22 can be assembled with the partition 214 in the transmission cavity, and specifically, it can be assembled through structures such as screws or bolts. In this way, the assembly of the transmission core 22 and the transmission housing 21 is realized by the mounting ring 221 and the partition 214, so that the assembly area between the two is increased, and the connection strength between the two can also be increased. When transmission is performed, the strength of the transmission housing 21 is better, and the vibration resistance performance can also be improved through the connection strength.

[0038] More specifically, the partition 214 divides the transmission cavity into a first cavity section 212 and a second cavity section 213, the axial height of the first cavity section 212 is greater than the axial height of the second cavity section 213, and the above-mentioned motor shaft 11 extends into the first cavity section 212 through the first end and is connected to the top of the transmission core 22, so that the center of gravity of the transmission core 22 is concentrated in the first cavity section 212. In this way, the transmission gravity of the transmission housing is mainly concentrated in the first cavity section 212 of the transmission cavity, which is located at the front end bearing of the motor shaft 11 close to the drive motor 10. The transmission force borne by the transmission housing can also be concentrated at the position of the first cavity section, so that the connection position between the motor shaft and the transmission core can be prevented from being broken, thereby enhancing the rigidity of the motor and reducing the risk of disturbance and breakage of the motor shaft 11.

[0039] Furthermore, the bottom end of the second cavity section 213 can be sealed with a cover plate 30, which is made of a sealant material. Specifically, if dust and wood chips are easily accumulated (attached) inside the transmission housing, causing the transmission structure to be unbalanced, especially in humid weather conditions, the vibration of the machine will be greater. In order to further prevent dust and wood chips from entering the transmission housing and prevent the accumulation (attachment) of dust and wood chips, a cover plate 30 made of a sealant material is used at the bottom of the transmission housing to eliminate the influence of dust and wood chips on the vibration of the machine.

[0040] Furthermore, the transmission housing 21 is made of cast aluminum material. Since the vibration of the transmission housing 21 is also related to the mass of kinetic energy, cast aluminum material is selected, which has good strength and light weight physical properties, thereby reducing inertia and helping to reduce imbalance and vibration.

[0041] Furthermore, a first keyway 111 is disposed on the outer surface of the motor shaft 11 , and a second keyway is disposed on the inner surface of the transmission core 22 . The first keyway 111 and the second keyway are arranged opposite to each other and are embedded with a flat key 40 .

[0042] Specifically, in order to facilitate the assembly of the motor shaft 11 and the transmission core 22, a rotating hole can be set inside the transmission core 22, so that the above-mentioned second keyway can be set on the inner wall of the rotating hole, and the motor shaft 11 can be connected to the rotating hole when assembled with the transmission core 22. During processing, the rotating hole and the transmission core 22 are coaxially arranged, and the motor shaft 11 is inserted into the rotating hole, and the flat key 40 is used to achieve connection in the first keyway 111 and the second keyway. The whole is dynamically balanced with high balancing accuracy, thereby reducing inertia and further reducing the vibration generated when the motor shaft 11 rotates.

[0043] In addition, since the transmission core 22 is provided with a rotating hole, in order to prevent dust from entering the assembly gap between the motor shaft 11 and the rotating hole through the rotating hole, a sealing film 50 can be covered at the bottom end of the rotating hole. The sealing film 50 can be assembled on the bottom end of the transmission core 22 by screws. This can effectively reduce the dust in the assembly gap between the motor shaft 11 and the transmission core 22, thereby reducing vibration and further improving the anti-vibration performance.

[0044] It should also be noted that when the motor transmission device with anti-vibration function is assembled, the motor shaft 11 extending from the end of the motor body is connected to the first end of the transmission housing 21, and the outer periphery of the first end is matched with the outer periphery of the end of the motor body by a first sealing structure to achieve a first layer of sealing at the assembly position, which can effectively reduce the dust and other impurities entering the transmission member 20 during woodworking. In this way, the first layer of sealing is achieved above the outside of the motor shaft 11 and the transmission core 22. At the same time, the bottom end of the transmission housing 21 is formed by a cover plate 30 structure of sealant to achieve a second layer of sealing below the outside of the motor shaft 11 and the transmission core 22, which can reduce the dust accumulated on the outer surface of the transmission housing 21 from falling into the transmission cavity through the assembly gap below, so the upper and lower layers of sealing can effectively protect the external assembly space of the assembly structure of the motor shaft 11 and the transmission core 22. The internal assembly gap between the motor shaft 11 and the transmission core 22 is sealed with a sealing film 50 for the third layer, so that dust prevention is achieved inside.

[0045] In this way, both the external space and the internal space of the motor shaft 11 and the transmission core 22 can be protected, which reduces the accumulation of dust during the processing layer by layer, thereby eliminating the influence of dust and wood chips on the vibration of the machine, preventing the accumulated dust and wood chips from causing momentum imbalance to high-speed rotating parts, and effectively playing an anti-vibration role.

[0046] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A motor transmission device with anti-vibration function, characterized in that: It includes a driving motor and a transmission member, wherein the driving motor has a motor body and a motor shaft, and the transmission member includes a transmission housing and a transmission core, wherein the transmission housing is provided with a first end and a second end, and a transmission cavity is provided in the transmission housing, and the transmission core is connected to the transmission cavity and is connected to the transmission housing; the first end of the transmission housing is sleeved on the end of the motor body so that the motor shaft extends into the transmission cavity and is connected to the transmission core; a first sealing structure is provided on the outer peripheral edge of the end of the first end, and a second sealing structure is provided on the outer peripheral edge of the end of the motor body, and the first sealing structure and the second sealing structure are plug-in connected and rotationally matched.

2. The motor transmission device with anti-vibration function according to claim 1, characterized in that: A sealing boss is provided on the outer circumferential edge of the end portion of the first end, the inner ring of the sealing boss is provided with a first sealing step, and the outer ring of the sealing boss is provided with a second sealing step; a sealing groove is provided at the end portion of the motor body, the inner ring of the sealing groove has a first sealing side wall, and the outer ring of the sealing groove has a second sealing side wall, and the sealing boss is inserted into the sealing groove so that the first sealing step abuts against the first sealing side wall, and the second sealing step abuts against the second sealing side wall.

3. The motor transmission device with anti-vibration function according to claim 2, characterized in that: The first sealing step and the second sealing step are arranged in an alternating manner in the axial direction of the transmission housing; the second sealing side wall and the first sealing side wall are arranged in an alternating manner in the axial direction of the motor shaft.

4. The motor transmission device with anti-vibration function according to claim 1, characterized in that: An end cover extending toward the transmission cavity is provided at the end of the motor body, and the motor shaft extends out to the transmission cavity through the end cover; the second sealing structure is arranged around the outer periphery of the end cover.

5. The motor transmission device with anti-vibration function according to claim 4, characterized in that: A guide cone surface is provided on the outer circumference of the end cover, and the outer diameter of the guide cone surface gradually decreases from top to bottom.

6. The motor transmission device with anti-vibration function according to any one of claims 1 to 5, characterized in that: A partition is provided in the transmission housing, and the partition is provided with a through hole, and the transmission core is connected to the through hole. A mounting ring is provided around the outer periphery of the transmission core, and the mounting ring is used to connect with the partition after the transmission core is connected to the through hole.

7. The motor transmission device with anti-vibration function according to claim 6, characterized in that: The partition divides the transmission cavity into a first cavity section and a second cavity section, and the axial height of the first cavity section is greater than the axial height of the second cavity section; the motor shaft extends into the first cavity section through the first end and is connected to the top end of the transmission core, so that the center of gravity of the transmission core is concentrated in the first cavity section.

8. The motor transmission device with anti-vibration function according to claim 7, characterized in that: The bottom end of the second cavity section is sealed with a cover plate; the cover plate is made of sealant material.

9. The motor transmission device with anti-vibration function according to any one of claims 1 to 5, characterized in that: The transmission housing is made of cast aluminum material.

10. The motor transmission device with anti-vibration function according to any one of claims 1 to 5, characterized in that: The outer surface of the motor shaft is provided with a first keyway, the inner surface of the transmission core is provided with a second keyway, the first keyway and the second keyway are arranged opposite to each other and are embedded with flat keys.

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