Novel transmission structure of linear motor module

Abstract

The utility model belongs to the technical field of linear motor modules, and particularly discloses a novel transmission structure of a linear motor module, which comprises a guide rail, a sliding seat is movably mounted on the outer surface of the guide rail, a roll shaft is fixedly arranged on the inner side of the sliding seat in a penetrating manner, and a roller is rotatably connected to one end, close to the guide rail, of the roll shaft. A plurality of sets of guide rods are arranged on the outer surface of the guide rail, end cover plates are fixedly connected to the two ends of the guide rail, buffering anti-collision mechanisms are arranged on the end cover plates, and a collision piece is arranged on the outer surface of the sliding base. According to the novel transmission structure of the linear motor module, interaction of a magnetic field and a magnet is utilized to drive the sliding seat to do linear motion, and rolling contact between the rolling wheel and the guide rod is matched, so that the linear motor module has a lower friction coefficient compared with sliding contact of a traditional linear guide rail pair, which means that friction force needing to be overcome is smaller under the same driving force; energy loss and heat accumulation caused by friction are reduced, and relatively efficient energy conversion and motion control are achieved.

Description

Technical Field

[0001] This application relates to the technical field of linear motor modules, and specifically to a new transmission structure for a linear motor module. Background Technique

[0002] A linear motor module is a transmission device that directly converts electrical energy into linear motion mechanical energy. It can be regarded as the linear expansion of a rotary motor and works using the principle of electromagnetic action without any intermediate conversion structure. A linear motor module usually consists of a linear motor, a guide rail, a slider, a control system, etc.

[0003] At present, the linear motor modules on the market are composed of components such as a base, a linear guide rail pair, a linear motor mover, a linear motor stator, and a sliding seat. Among them, the linear guide rail pair, as a transmission and guiding component, belongs to a precision machining component, accounts for a relatively large proportion of the cost in the entire linear motor module, and it is difficult to achieve relatively efficient energy conversion and motion control. Utility Model Content

[0004] In view of this, the purpose of this utility model is to solve the disadvantages in the background technique and propose a new transmission structure for a linear motor module to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides a new transmission structure for a linear motor module, including a guide rail. A sliding seat is movably installed on the outer surface of the guide rail. A roller shaft is fixedly penetrated through the inner side of the sliding seat. A roller is rotatably connected to one end of the roller shaft close to the guide rail. A plurality of groups of guide rods are arranged on the outer surface of the guide rail. End covers are fixedly connected to both ends of the guide rail. A buffer and anti-collision mechanism is arranged on the end covers. A collision member is arranged on the outer surface of the sliding seat. The structural form of the guide rod + roller adopts general standard parts, reducing the number of parts of the positioning system, reducing the complexity of the mechanism, improving the reliability, achieving stable speed and silent operation, reducing the precision machining process of the load, and effectively reducing the cost without reducing the accuracy. Among them, the shape of the guide rod is circular, and the number is four groups, which are respectively arranged at the four outer corners of the guide rail opposite to each other. Its function is to play a guiding and driving role, while the function of the roller is to perform rolling transmission, and the function of the sliding seat is to carry the workpiece.

[0006] Preferably, a stator is arranged on the guide rail, and a mover is arranged on the inner side of the sliding seat.

[0007] Preferably, the buffer and anti-collision mechanism includes a damper fixedly penetrated through the inner side of the end cover. A buffer rod is slidably connected to the inner surface of the damper. Through the cooperation of the buffer and anti-collision mechanism and the collision member, it is possible to avoid the sliding seat directly colliding with the end cover and effectively buffer and protect the sliding seat after braking.

[0008] Preferably, one end of the buffer rod away from the damper is fixedly connected with a counter impact plate, and the outer surface of the counter impact plate is provided with an embedded groove.

[0009] Preferably, a spring is arranged on the outer surface of the damper, and one end of the spring is fixedly connected with the outer surface of the counter impact plate.

[0010] Preferably, the collision member includes straight rods fixedly connected to both ends of the sliding seat, and rubber heads are arranged at one ends of the straight rods close to the counter impact plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. For the novel transmission structure of this linear motor module, the interaction between the magnetic field and the magnet is utilized to drive the sliding seat to perform linear motion. Combined with the rolling contact between the roller and the guide rod, it has a lower friction coefficient compared with the sliding contact of the traditional linear guide pair. This means that under the same driving force, the friction force to be overcome is smaller, reducing the energy loss and heat accumulation caused by friction, and realizing relatively efficient energy conversion and motion control.

[0013] 2. For the novel transmission structure of this linear motor module, the additional buffer and anti-collision mechanism (such as straight rods, rubber heads, counter impact plates, dampers, etc.) can effectively slow down the inertial impact of the sliding seat after braking, avoid directly hitting the end cover plate, protect the module and the target object from damage, and at the same time help the system quickly return to a stable state. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of this application;

[0015] Figure 2 is a schematic diagram of the surface structure of the guide rail of this application;

[0016] Figure 3 is a schematic diagram of the surface structure of the damper of this application.

[0017] Among them: 1. Guide rail; 2. Sliding seat; 3. Roller shaft; 4. Roller; 5. Guide rod; 6. Stator; 7. Rotor; 8. End cover plate; 9. Damper; 10. Buffer rod; 11. Counter impact plate; 12. Embedded groove; 13. Spring; 14. Straight rod; 15. Rubber head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0019] Please refer to Figures 1-3 , a new transmission structure of a linear motor module, which includes a guide rail 1. A slide seat 2 is movably installed on the outer surface of the guide rail 1. A roller shaft 3 is fixedly penetrated through the inner side of the slide seat 2. One end of the roller shaft 3 close to the guide rail 1 is rotatably connected with a roller 4. A plurality of groups of guide rods 5 are arranged on the outer surface of the guide rail 1. Both ends of the guide rail 1 are fixedly connected with end covers 8. A buffer and anti-collision mechanism is arranged on the end covers 8. A collision member is arranged on the outer surface of the slide seat 2.

[0020] Through the above technical solution, this transmission structure adopts the structural method of combining the guide rod 5 and the roller 4 to replace the linear guide rail pair to realize the transmission and guiding functions. During operation, the mover 7 is controlled by a driver, and through the interaction of the magnetic field and the magnet inside the motor, the slide seat 2 can generate a linear motion to meet the working condition speed requirements, so as to realize efficient energy conversion and motion control.

[0021] Specifically, a stator 6 is arranged on the guide rail 1, and a mover 7 is arranged inside the slide seat 2.

[0022] Through the above technical solution, the stator 6 part contains a magnet, and the mover 7 part is a coil. Through the interaction of the magnetic field and the magnet inside the motor, the slide seat 2 can be driven to move forward.

[0023] Specifically, the buffer and anti-collision mechanism includes a damper 9 fixedly penetrated through the inner side of the end cover 8, and a buffer rod 10 is slidably connected to the inner surface of the damper 9.

[0024] Through the above technical solution, the core principle of the damper 9 is to use friction, liquid viscosity or gas resistance to offset vibration and impact. When the buffer rod 10 penetrates into the damper 9, it can effectively absorb the impact energy, and this energy absorption is realized through the compression and flow resistance of the liquid or gas inside the damper 9.

[0025] Specifically, one end of the buffer rod 10 far from the damper 9 is fixedly connected with a counter impact plate 11, and a groove 12 is opened on the outer surface of the counter impact plate 11.

[0026] Through the above technical solution, the groove 12 is opened right opposite to the counter impact plate 11 so that the rubber head 15 can be accurately embedded into the groove 12 for stable buffering.

[0027] Specifically, a spring 13 is arranged on the outer surface of the damper 9, and one end of the spring 13 is fixedly connected with the outer surface of the counter impact plate 11.

[0028] Through the above technical solution, after the counter impact plate 11 is subjected to a collision impact, it will compress the spring 13, thereby generating a reverse buffer force.

[0029] Specifically, the collision components include straight rods 14 fixedly connected to both ends of the sliding seat 2, and rubber heads 15 are provided at one ends of the straight rods 14 close to the counter impact plate 11.

[0030] Through the above technical solution, the rubber head 15 is made of rubber material, which has a certain buffering capacity by itself, and it will also be more stable when embedded in the embedding groove 12.

[0031] Working principle: This linear motor module adopts the structural mode of the guide rod 5 + roller 4 to replace the traditional linear guide pair to achieve the functions of transmission and guidance. During operation, the mover 7 is controlled by a driver (the stator 6 part contains magnets, and the mover 7 part is a coil). Through the interaction between the magnetic field and the magnets inside the motor, the sliding seat 2 is driven to move forward. During this process, when the roller 4 rotates along the roller shaft 3, it will roll along the surface of the guide rod 5, so that the sliding seat 2 generates a linear motion to meet the working condition speed requirements. Considering that the traditional linear guide pair usually needs to convert the rotational motion of the rotary motor into a linear motion through intermediate transmission elements such as balls and sliders, there are energy losses and mechanical frictions in this process. However, this linear motor module directly uses the interaction between the magnetic field and the magnets to drive the sliding seat 2 to perform a linear motion, combined with the roller 4 rolling along the surface of the guide rod 5. This rolling contact has a lower friction coefficient compared with the sliding contact in the traditional linear guide pair. A low friction coefficient means that under the same driving force, the roller 4 can roll along the guide rod 5 more easily, reducing the energy loss and heat accumulation caused by friction, and at the same time improving the operating efficiency and stability of the system. Since the contact mode between the roller 4 and the guide rod 5 is simple and has little wear, and the linear motor module itself has a compact structure and no vulnerable parts, the maintenance cost is relatively low. When the sliding seat 2 is braked, it will still move forward a certain distance under the action of inertia. During this process, the straight rod 14 will drive the rubber head 15 to rush towards the counter impact plate 11. When the rubber head 15 is embedded in the embedding groove 12 opened on the surface of the counter impact plate 11, the counter impact plate 11 will push the buffer rod 10 deep into the damper 9. The damper 9 consumes the impact energy and slows down the impact speed of the buffer rod 10 (and the objects connected thereto), thereby reducing the impact force on the target object. This impact mitigation effect helps to protect the target object from damage, buffers the sliding seat 2 before it hits the end cover plate 8, that is, the sliding seat 2 and the components on its surface are effectively protected, and enables the system to quickly return to a stable state.

[0032] In summary, this linear motor module adopts the structural mode of the guide rod 5 + roller 4, and through advantages such as direct drive, low friction contact, precise magnetic field control, fast response, and low maintenance cost, it realizes efficient energy conversion and motion control. These advantages make this linear motor module have broad application prospects in the fields of industrial automation, precision manufacturing, etc.

[0033] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A novel transmission structure of a linear motor module, comprising a guide rail (1), characterized in that: A slide seat (2) is movably mounted on the outer surface of the guide rail (1), a roller shaft (3) is fixedly penetrated on the inner side of the slide seat (2), and a roller (4) is rotatably connected to one end of the roller shaft (3) close to the guide rail (1). A plurality of groups of guide rods (5) are arranged on the outer surface of the guide rail (1), and end covers (8) are fixedly connected to both ends of the guide rail (1). A buffer and anti-collision mechanism is arranged on the end covers (8), and a collision member is arranged on the outer surface of the slide seat (2).

2. A novel transmission structure of a linear motor module according to claim 1, characterized in that: A stator (6) is arranged on the guide rail (1), and a mover (7) is arranged on the inner side of the slide seat (2).

3. The novel transmission structure of a linear motor module according to claim 1 is characterized in that: The buffering and anti-collision mechanism comprises a damper (9) fixedly arranged and penetrated inside the end cover plate (8), and a buffer rod (10) is slidably connected to the inner surface of the damper (9).

4. A novel transmission structure of a linear motor module according to claim 3, characterized in that: One end of the buffer rod (10) away from the damper (9) is fixedly connected to a counter plate (11), and an embedding groove (12) is provided on the outer surface of the counter plate (11).

5. A novel transmission structure of a linear motor module according to claim 4, characterized in that: A spring (13) is provided on the outer surface of the damper (9), and one end of the spring (13) is fixedly connected to the outer surface of the impact plate (11).

6. A novel transmission structure of a linear motor module according to claim 4, characterized in that: The collision member comprises a straight rod (14) fixedly connected to both ends of the slide seat (2), and a rubber head (15) is provided at one end of the straight rod (14) close to the impact plate (11).

Images