Linear driving device

Abstract

The utility model provides a linear driving device which comprises an installation seat, a guide rail and a sliding seat, the guide rail is fixedly connected with one face of the installation seat, the sliding seat is connected with the guide rail in a sliding mode, two sets of motor assemblies are symmetrically installed on the two sides of the center line in the length direction of the linear driving device, and each motor assembly comprises a rotor device and a stator device. The rotor device is fixedly connected with the mounting seat, the stator device is fixedly connected with the sliding seat and drives the sliding seat to slide along the guide rail, the linear driving device further comprises a detection assembly, the detection assembly comprises a reading device and a grating ruler, the grating ruler is mounted on the side face of the sliding seat, and the reading device is fixedly connected with the mounting seat and is parallel to the grating ruler. And the reading device is configured to read the scales on the grating ruler. The combination of the reading device and the grating ruler realizes high-precision grating detection, and carries out rapid and accurate position positioning. And the two groups of symmetrically mounted motor assemblies can move in opposite directions or in the same direction, so that the application field and the application range of the linear driving device are expanded.

Description

Technical Field

[0001] This utility model relates to a high-precision linear drive device capable of simultaneously driving multiple loads, belonging to the field of precision mechanical equipment. Background Technology

[0002] Linear drive devices are increasingly used in various industrial sectors. However, when multiple motors are installed in linear drive devices currently on the market, they are prone to loss of control and collisions due to program or system problems, resulting in a low safety factor. At the same time, they are also relatively difficult to control with precision, and cannot meet the needs of high-precision applications.

[0003] In view of this, it is indeed necessary to improve the structure of existing linear drive devices to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a linear drive device that offers precise control and can simultaneously drive multiple loads.

[0005] To achieve the above objectives, this utility model provides a linear drive device, including a mounting base, a guide rail, and a slide. The guide rail is fixedly connected to one side of the mounting base, and the slide is slidably connected to the guide rail. Two sets of motor assemblies are symmetrically installed on both sides of the centerline along the length direction of the linear drive device. Each motor assembly includes a mover and a stator. The mover is fixedly connected to the mounting base, and the stator is fixedly connected to the slide. The stator drives the slide to slide along the guide rail. The linear drive device also includes a detection component, which includes a reading device and a scale. The scale is installed on the side of the slide, and the reading device is fixedly connected to the mounting base and parallel to the scale. The reading device is configured to read the scale on the scale.

[0006] As a further improvement of this utility model, it also includes a limiting component, which is located on the side of the mounting base away from the detection component. The limiting component includes a photoelectric switch and a limiting plate. The two photoelectric switches are fixedly connected to the side of the mounting base, and the limiting plate is fixedly connected to the slide.

[0007] As a further improvement of this utility model, a slider is installed on the guide rail, the slide block is fixedly connected to the slider, and the slide block and the guide rail are slidably connected through the slider.

[0008] As a further improvement of this utility model, the mounting base is provided with a mounting groove on the side facing the motor assembly. The mounting groove includes a groove bottom and side walls extending from both sides of the groove bottom away from the groove bottom. The side wall extends outward at one end away from the groove bottom to form a mounting surface. The guide rail is fixedly connected to the mounting surface. The moving part is at least partially installed in the mounting groove.

[0009] As a further improvement of this utility model, a stop is provided at the centerline position of the linear drive device along its length. The stop extends at least partially into the mounting groove, and the stop separates the moving parts of the two sets of motor assemblies.

[0010] As a further improvement of this utility model, a damping block is installed on the side of the stop block facing away from the mounting base, and the damping block is at least partially parallel to the slide block.

[0011] As a further improvement of this utility model, it also includes an end cap, which abuts against both ends of the mounting base. The end cap is provided with a wire outlet hole, through which the cable of the moving device is connected to the power supply.

[0012] As a further improvement of this utility model, at least one anti-collision member is provided on the side of the end cover facing the motor assembly.

[0013] As a further improvement of this utility model, the linear drive device further includes a connecting block, which is fixedly connected to the side of the mounting base, and the reading device is fixedly connected to the bottom of the connecting block.

[0014] As a further improvement of this utility model, the linear drive device also includes a housing, which is located between the end caps and always covers the guide rail, slide block and motor assembly.

[0015] The beneficial effects of this invention are as follows: By combining the reading device with the grating ruler, high-precision grating detection is achieved, enabling rapid and accurate position positioning. This significantly improves the system's repeatability and meets the application requirements of ultra-precision applications. Furthermore, the symmetrically installed two sets of motor assemblies can move in opposite directions or in the same direction, satisfying more operational needs and expanding the application areas and scope of this linear drive device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a linear drive device according to an embodiment of the present invention.

[0017] Figure 2 yes Figure 1 The diagram shows a three-dimensional view of the linear drive device from another angle.

[0018] Figure 3 yes Figure 1 The shown is a cross-sectional view of the linear drive device.

[0019] Figure 4 yes Figure 1 A three-dimensional structural diagram of the mounting base in the linear drive device.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100 - Linear drive unit;

[0022] 110-Mounting base, 111-Mounting groove, 1111-Groove bottom, 1112-Side wall, 112-Mounting surface, 120-Guide rail, 121-Slider, 130-Slide block, 140-Motor assembly, 141-Motor device, 142-Stator device, 150-Detection assembly, 151-Reading device, 152-Scale, 153-Connecting block, 160-Limiting assembly, 161-Photoelectric switch, 162-Limiting piece, 170-Damping block, 180-End cap, 181-Cable outlet, 182-Anti-collision component, 190-Outer shell. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Please see Figures 1-4As shown, a linear drive device 100 provided by this utility model includes a mounting base 110, a guide rail 120, and a slide block 130. The guide rail 120 is fixedly connected to one side of the mounting base 110, and the slide block 130 is slidably connected to the guide rail 120. Two sets of motor assemblies 140 are symmetrically installed on both sides of the centerline in the length direction of the linear drive device 100. The motor assembly 140 includes a mover device 141 and a stator device 142. The mover device 141 is fixedly connected to the mounting base 110. Next, the stator assembly 142 is fixedly connected to the slide 130, and the stator assembly 142 drives the slide 130 to slide along the guide rail 120. The linear drive device 100 also includes a detection component 150, which includes a reading device 151 and a scale 152. The scale 152 is installed on the side of the slide 130, and the reading device 151 is fixedly connected to the mounting base 110. The reading device 151 is parallel to the scale 152 and is configured to read the scale on the scale 152. In this linear drive device 100, the combination of the reading device 151 and the scale 152 enables high-precision grating detection and rapid and accurate position positioning, which can significantly improve the repeatability of the system and meet the application requirements of ultra-precision applications. The two sets of motor assemblies 140 installed symmetrically can move in opposite directions or in the same direction, meeting more operational requirements and expanding the application field and scope of the linear drive device 100.

[0027] Furthermore, the linear drive device 100 also includes a limiting component 160, located on the side of the mounting base 110 away from the detection component 150. The limiting component 160 includes photoelectric switches 161 and limiting plates 162. The two photoelectric switches 161 are fixedly connected to the side of the mounting base 110, and the limiting plates 162 are fixedly connected to the slide block 130. The photoelectric switches 161, as non-contact sensors, can accurately detect the position of the slide block 130. When the slide block 130 approaches or reaches the limit of its range of motion, the photoelectric switches 161 will send a signal to stop or decelerate the drive system, thereby preventing the slide block 130 from moving excessively and colliding with the end of the guide rail 120 or other components, causing equipment damage or personal injury. By limiting the range of motion of the slide block 130, the limiting component 160 ensures that the linear drive device 100 operates within a predetermined safe area, improving the safety of the entire system.

[0028] Furthermore, a slider 121 is mounted on the guide rail 120, and a slide block 130 is fixedly connected to the slider 121. The slide block 130 and the guide rail 120 are slidably connected through the slider 121. The slider 121 typically contacts the guide rail 120 through rolling or sliding friction, which has a lower coefficient of friction compared to direct contact sliding friction. This helps reduce frictional resistance during movement, lower energy consumption and wear, and improve the overall efficiency and service life of the system. In addition, since the contact area between the slider 121 and the guide rail 120 is relatively small and uniformly distributed, local wear can be reduced, extending the service life of both the guide rail 120 and the slider 121.

[0029] Furthermore, the mounting base 110 has a mounting groove 111 on the side facing the motor assembly 140. The mover device 141 is at least partially installed in the mounting groove 111. The mounting groove 111 includes a groove bottom 1111 and side walls 1112 extending from both sides of the groove bottom 1111 away from the groove bottom 1111. The end of the side wall 1112 facing away from the groove bottom 1111 extends outward to form a mounting surface 112. The guide rail 120 is fixedly connected to the mounting surface 112. The mover device 141 is at least partially installed in the mounting groove 111. Installing the mover device 141 in the mounting groove 111 can further reduce the size of the linear drive device 100, making it more compact.

[0030] Furthermore, a stop is provided at the centerline position along the length of the linear drive unit 100. The stop extends at least partially into the mounting groove 111. The stop is configured to separate the mover devices 141 of the two sets of motor assemblies 140, facilitating installation. A damping block 170 is installed on the side of the stop facing away from the mounting base 110. The damping block 170 is at least partially parallel to the slide 130. This design avoids direct contact between the mover devices 141, reducing wear and noise caused by mutual collision or friction, and also protecting the mover devices 141 from external interference. The stop simplifies the installation process of the linear drive unit 100. Because it clearly defines the boundaries between the mover devices 141, installers can more easily place each component in the correct position, thereby improving installation efficiency. The damping block 170 is at least partially parallel to the slide 130. When the linear drive unit 100 is running, the damping block 170 can absorb and dissipate the vibration and impact energy generated by the movement of the stator device 142 and the slide 130. This helps reduce vibration and noise throughout the system, improving the stability and lifespan of the linear drive 100.

[0031] Furthermore, it also includes an end cap 180, which abuts against both ends of the mounting base 110. The end cap 180 is provided with a cable outlet hole 181, through which the cable of the mover device 142 is connected to the power supply. The end cap 180 can prevent dust and debris from entering the linear drive device 100, thus extending the service life of the internal components.

[0032] Furthermore, at least one anti-collision element 182 is provided on the side of the end cap 180 facing the motor assembly 140 to further enhance the safety of the linear drive device 100.

[0033] Furthermore, the linear drive unit 100 also includes a connecting block 153, which is fixedly connected to the side of the mounting base 110, and the reading device 151 is fixedly connected to the bottom of the connecting block 153. The connecting block 153 acts as an intermediate bridge, securely mounting the reading device 151 onto the mounting base 110. This direct and robust connection ensures the stability of the entire linear drive unit 100 during operation. The robust connection reduces the risk of component loosening or damage due to vibration or impact, thereby improving the reliability and service life of the linear drive unit 100.

[0034] The linear drive 100 also includes a housing 190 located between the end caps 180, which consistently covers the guide rail 120, slide 130, and motor assembly 140. The housing 190 effectively isolates dust, dirt, and other impurities from the external environment, preventing them from entering the linear drive 100. This is crucial for maintaining the cleanliness of the guide rail 120, slide 130, and motor assembly 140, reducing wear and malfunctions caused by contamination.

[0035] In summary, the linear drive device 100 of this invention, through the combination of the reading device 151 and the grating ruler 152, achieves high-precision grating detection and rapid, accurate position positioning, significantly improving the system's repeatability and meeting the application requirements of ultra-precision applications. Furthermore, the two symmetrically installed motor assemblies 140 can move in opposite directions or in the same direction, satisfying more operational needs and expanding the application fields and scope of the linear drive device 100.

[0036] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A linear drive device, characterized in that, The linear drive includes a mounting base (110), a guide rail (120), and a slide (130). The guide rail (120) is fixedly connected to one side of the mounting base (110), and the slide (130) is slidably connected to the guide rail (120). Two sets of motor assemblies (140) are symmetrically mounted on both sides of the centerline along the length direction of the linear drive. Each motor assembly (140) includes a mover (141) and a stator (142). The mover (141) is fixedly connected to the mounting base (110), and the stator (142) is connected to the slide (130). The stator device (142) drives the slide (130) to slide along the guide rail (120). The linear drive device also includes a detection component (150). The detection component (150) includes a reading device (151) and a scale (152). The scale (152) is mounted on the side of the slide (130). The reading device (151) is fixedly connected to the mounting base (110). The reading device (151) is parallel to the scale (152). The reading device (151) is configured to read the scale on the scale (152).

2. The linear drive device according to claim 1, characterized in that, It also includes a limiting component (160), which is located on the side of the mounting base (110) away from the detection component (150). The limiting component (160) includes a photoelectric switch (161) and a limiting piece (162). The two photoelectric switches (161) are fixedly connected to the side of the mounting base (110), and the limiting piece (162) is fixedly connected to the slide (130).

3. The linear drive device according to claim 1, characterized in that, A slider (121) is installed on the guide rail (120). The slide block (130) is fixedly connected to the slider (121). The slide block (130) and the guide rail (120) are slidably connected through the slider (121).

4. The linear drive device according to claim 1, characterized in that, The mounting base (110) has a mounting groove (111) on the side facing the motor assembly (140). The mounting groove (111) includes a groove bottom (1111) and sidewalls (1112) extending from both sides of the groove bottom (1111) away from the groove bottom (1111). The sidewalls (1112) extend outward from the end facing away from the groove bottom (1111) to form a mounting surface (112). The guide rail (120) is fixedly connected to the mounting surface (112). The moving device (141) is at least partially installed in the mounting groove (111).

5. The linear drive device according to claim 4, characterized in that, At the centerline position along the length of the linear drive device, a stop is provided, the stop extending at least partially into the mounting groove (111), the stop being configured to separate the actuators (141) of the two sets of motor assemblies (140).

6. The linear drive device according to claim 5, characterized in that, A damping block (170) is mounted on the side of the stop block facing away from the mounting base (110), and the damping block (170) is at least partially parallel to the slide (130).

7. The linear drive device according to claim 1, characterized in that, It also includes an end cap (180), which abuts against both ends of the mounting base (110). The end cap (180) is provided with a cable outlet (181), through which the cable of the moving device (141) is connected to the power supply.

8. The linear drive device according to claim 7, characterized in that, The end cap (180) has at least one anti-collision element (182) on the side facing the motor assembly (140).

9. The linear drive device according to claim 1, characterized in that, The linear drive device further includes a connecting block (153), which is fixedly connected to the side of the mounting base (110), and the reading device (151) is fixedly connected to the bottom of the connecting block (153).

10. The linear drive device according to claim 7, characterized in that, The linear drive device also includes a housing (190) located between the end caps (180), the housing (190) always covering the guide rail (120), the slide (130) and the motor assembly (140).

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