Linear motor module

Abstract

The utility model provides a linear motor module, which comprises a base and a sliding device, a guide rail is arranged in the base, the sliding device comprises a sliding seat and a roller assembly, the roller assembly is fixedly connected with the sliding seat, the roller assembly is in rolling contact with the guide rail, the roller assembly comprises an outer roller device and an inner roller device, and the outer roller device and the inner roller device are arranged along the sliding direction of the sliding seat. The outer roller devices are located at the two ends of the sliding seat, the inner roller device is located between the outer roller devices at the two ends, the inner roller device and the outer roller devices are in rolling contact with the guide rails on the two sides respectively, and the inner roller device or the outer roller devices are eccentric wheels. The sliding seat moves relative to the guide rail mounted on the base through the roller assembly, so that the sliding seat slides more smoothly and generates lower noise, and at the same time, in order to prevent slight deviation of the sliding seat caused by inaccurate hole opening in the sliding seat, at least one of the outer roller device and the inner roller device is arranged as an eccentric wheel, so that the sliding seat is more convenient to move. And it is ensured that the sliding base can do precise linear motion relative to the base.

Description

Technical Field

[0001] The utility model relates to a linear motor module, belonging to the field of mechanical transmission. Background Art

[0002] Linear motor modules are widely used in industrial automation, medical equipment, aerospace and other fields due to their high precision, high speed, high acceleration and non-contact motion.

[0003] In most existing linear motors, the slide is directly connected to the slot. Although this connection method can ensure that deflection is not likely to occur during operation, the friction between the slide and the slot is large, which will affect the load capacity of the linear motor during operation, and the noise generated will also be relatively large.

[0004] In view of this, it is indeed necessary to improve the existing linear motor module to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a linear motor module with low resistance during operation and smooth transmission.

[0006] To achieve the above-mentioned purpose, the utility model provides a linear motor module, including a base and a sliding device, a guide rail is installed in the base, the sliding device includes a slide and a roller assembly, the roller assembly is fixedly connected to the slide, the roller assembly is in rolling contact with the guide rail, the roller assembly includes an outer roller device and an inner roller device, along the sliding direction of the slide, the outer roller device is located at both ends of the slide, the inner roller device is located between the outer roller devices at both ends, the inner roller device and the outer roller device are in rolling contact with the guide rails on both sides respectively, and the inner roller device or the outer roller device is an eccentric wheel.

[0007] As a further improvement of the present invention, the roller assembly includes two inner roller devices, and along the sliding direction of the slide, the line connecting the axes of the outer roller devices is parallel to but does not overlap with the line connecting the axes of the inner roller devices.

[0008] As a further improvement of the present invention, the linear motor module further includes a drive unit and a synchronous belt. The synchronous belt passes through the slide and is fixedly connected to the slide. The drive unit is in transmission connection with the synchronous belt.

[0009] As a further improvement of the present invention, the outer roller device and the inner roller device both include a main shaft and a roller, the main shaft is perpendicular to the slide, the main shaft passes through the slide and the synchronous belt, and is fixedly connected to the slide and the synchronous belt, the roller is sleeved outside the main shaft, the roller can rotate relative to the main shaft, the roller abuts against the guide rail, and the inner roller device also includes an adjustment block, which is rotationally connected to the main shaft.

[0010] As a further improvement of the present invention, the drive unit includes a drive motor, a first synchronous wheel and a second synchronous wheel. The first synchronous wheel is fixedly connected to the drive motor, and the synchronous belt is sleeved outside the first synchronous wheel and the second synchronous wheel. The first synchronous wheel drives the second synchronous wheel to rotate synchronously through the synchronous belt.

[0011] As a further improvement of the present invention, the base includes a bottom wall and side walls located on both sides of the bottom wall, the end of the base facing away from the bottom wall is a slot, the slide is installed in the slot, the side of the side wall facing each other is provided with a guide groove, and the guide rail is installed in the guide groove.

[0012] As a further improvement of the present invention, the sliding device further includes a clamping plate, which is located at both ends of the travel direction of the slide, and the clamping plate is fixedly connected to the slide, and the clamping plate clamps the synchronous belt.

[0013] As a further improvement of the present invention, the linear motor module also includes a limit assembly, which includes a photoelectric module and a sensor sheet. The photoelectric modules are located at both ends of the travel direction of the slide, and the photoelectric module is located on the side of the side wall facing away from the bottom wall. A sensor sheet is provided on the side of the slide facing the photoelectric module.

[0014] As a further improvement of the present invention, the linear motor module also includes a protective belt, which is fixedly connected to both ends of the base. The slide includes a seat body and a cover body located above the seat body. The protective belt passes between the seat body and the cover body, and the protective belt covers the slot.

[0015] As a further improvement of the present invention, soft blocks are provided at both ends of the sliding seat in the forward direction, and the soft blocks abut against the guide rails on both sides, and the soft blocks are configured to clean the guide rails.

[0016] The beneficial effects of the present invention are as follows: in the linear motor module of the present invention, the slide therein is in rolling contact with the guide rail through the roller assembly, and the slide moves relative to the guide rail installed on the base through the roller assembly, which effectively reduces the friction during sliding, making the slide smoother and generating less noise when sliding. At the same time, in order to prevent the openings on the slide from being inaccurate, resulting in slight deviation of the slide, at least one of the outer roller device and the inner roller device in the present invention is an eccentric wheel, so that the position of the slide can be fine-tuned by the eccentric wheel to ensure that the slide can perform precise linear motion relative to the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of a linear motor module according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Enlarged view of the circled area.

[0019] Figure 3 yes Figure 1 The cross-sectional view of the linear motor module is shown.

[0020] Figure 4 yes Figure 3 Enlarged view of the circled area.

[0021] Figure 5 yes Figure 1 The linear motor module is shown in a top view with the slide and protective tape removed.

[0022] Figure 6 yes Figure 5 Enlarged view of the circled area.

[0023] Figure 7 yes Figure 1 The assembly diagram of the base and guide rail in the linear motor module is shown.

[0024] Description of reference numerals:

[0025] 100- linear motor module, 110- base, 111- bottom wall, 112- side wall, 1121- guide groove, 120- guide rail, 130- sliding device, 131- roller assembly, 1311- spindle, 1312- roller, 132- outer roller device, 133- inner roller device, 1331- adjustment block, 134- slide, 1341- seat body, 1342- cover body, 135- splint, 140- drive unit, 141- drive motor, 142- first synchronous wheel, 143- second synchronous wheel, 144- synchronous belt, 150- limit assembly, 151- photoelectric module, 152- induction sheet, 160- protective belt. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] It should be noted here that in order to avoid obscuring the present invention due to unnecessary details, only the structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0028] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0029] See also Figures 1 to 7 As shown, a linear motor module 100 provided by the utility model is provided. The linear motor module 100 includes a module body and a sliding device 130. The module body includes a base 110 and a guide rail 120 installed in the base 110. The sliding device 130 includes a slide 134 and a roller assembly 131. The roller assembly 131 is fixedly connected to the slide 134. The roller assembly 131 is in rolling contact with the guide rail 120. The roller assembly 131 includes an outer roller device 132 and an inner roller device 133. Along the sliding direction of the slide 134, the outer roller device 132 is located at both ends of the slide 134, and the inner roller device 133 is located between the outer roller devices 132 at both ends. The inner roller device 133 and the outer roller device 132 are in rolling contact with the guide rails 120 on both sides respectively, and the inner roller device 133 or the outer roller device 132 is an eccentric wheel.

[0030] The slide 134 in the linear motor module 100 is in rolling contact with the guide rail 120 through the roller assembly 131. The slide 134 moves relative to the guide rail 120 installed on the base 110 through the roller assembly 131, which effectively reduces the friction during sliding, making the slide 134 smoother and generating less noise when sliding. At the same time, in order to prevent the opening on the slide 134 from being imprecise, resulting in a slight offset of the slide 134, at least one of the outer roller device 132 and the inner roller device 133 in the utility model is an eccentric wheel, so that the position of the slide 134 can be fine-tuned by the eccentric wheel to ensure that the slide 134 can perform precise linear motion relative to the base 110.

[0031] In this embodiment, roller assembly 131 includes two inner roller assemblies 133. Along the sliding direction of slide 134, the line connecting the axis centers of outer roller assembly 132 and inner roller assemblies 133 is parallel but non-coincidental. This design helps ensure that roller assembly 131 moves precisely along a predetermined track during sliding. The combined restraining effect of the two inner roller assemblies 133 and the two outer roller assemblies 132 enhances the guiding accuracy of roller assembly 131, making it suitable for applications requiring high precision.

[0032] In this embodiment, the linear motor module 100 further includes a drive unit 140 and a synchronous belt 144. The synchronous belt 144 passes through and is fixedly connected to the slide 134. The drive unit 140 is in transmission connection with the synchronous belt 144. The drive unit 140 drives the synchronous belt 144 to rotate, which in turn drives the slide 134 to perform linear motion. The synchronous belt 144 has good flexibility and elasticity, which can reduce vibration and noise during transmission, making the linear motion of the slide 134 smoother. This is particularly important for automated equipment that requires high precision and stable operation. Compared with other transmission methods such as screws, the synchronous belt 144 transmission has higher transmission efficiency and faster response speed. This means that the linear motor module 100 can achieve high-speed starting and stopping, as well as high-speed linear motion, in a short time, improving the overall operating efficiency of the equipment. In addition, the synchronous belt 144 transmission allows for a larger center distance and a larger transmission ratio, which provides greater flexibility in the design of the linear motor module 100. The distance between the driving unit 140 and the slide 134 and the transmission ratio can be adjusted according to actual needs to adapt to different application scenarios.

[0033] In this embodiment, the drive unit 140 includes a drive motor 141, a first synchronous wheel 142 and a second synchronous wheel 143. The first synchronous wheel 142 is fixedly connected to the drive motor 141, and a synchronous belt 144 is sleeved on the outside of the first synchronous wheel 142 and the second synchronous wheel 143. The first synchronous wheel 142 drives the second synchronous wheel 143 to rotate synchronously through the synchronous belt 144. The first synchronous wheel 142 and the second synchronous wheel 143 are both provided with a tooth structure. The design of the tooth structure ensures the close engagement between the first synchronous wheel 142 and the second synchronous wheel 143, reduces slippage and errors during the transmission process, and thus achieves high-precision transmission. This high-precision transmission characteristic enables the linear motor module 100 to meet the positioning accuracy requirements of the micron level, and is suitable for high-precision processing, detection and other scenarios.

[0034] In this embodiment, the base 110 includes a bottom wall 111 and side walls 112 located on both sides of the bottom wall 111. A guide groove 1121 is provided on the opposite side of the side wall 112. The end of the base 110 facing away from the bottom wall 111 is a slot, the slide 134 is installed in the slot, and the guide rail 120 is installed in the guide groove 1121. Through the guide groove 1121 set in the side wall 112, the installation of the guide rail 120 and the slide 134 is very convenient and quick.

[0035] In this embodiment, the sliding device 130 also includes clamps 135, which are located at both ends of the sliding seat 134 in the direction of travel. The clamps 135 are fixedly connected to the sliding seat 134 and clamp the synchronous belt 144. The provision of the clamps 135 ensures that the sliding seat 134 and the synchronous belt 144 are always tightly connected, effectively preventing the sliding seat 134 from slipping or deflecting due to factors such as vibration, acceleration changes, or uneven load during movement. This stability is crucial for the high-precision positioning and continuous stable operation of the sliding device 130. The design of the clamps 135 can be adjusted and optimized according to the specific application scenario and the type of synchronous belt 144 to adapt to different working environments and load conditions, thereby improving the adaptability of the sliding device 130.

[0036] In this embodiment, the linear motor module 100 further includes a limit assembly 150, which includes a photoelectric module 151 and a sensor 152. The photoelectric modules 151 are located at both ends of the slide 134 in the direction of travel. The photoelectric modules 151 are located on the side of the side wall 112 facing away from the bottom wall 111. The sensor 152 is provided on the side of the slide 134 facing the photoelectric module 151. The primary function of the limit assembly 150 is to prevent the slide 134 from exceeding a predetermined travel range, thereby preventing damage to the equipment or personal injury. When the slide 134 approaches its travel limit, the sensor 152 enters the sensing area of ​​the photoelectric module 151, triggering a signal to stop or reverse the motor, ensuring safe operation of the equipment.

[0037] In some other embodiments, the position of the photoelectric module 151 can also be adjusted according to practical needs, and adjusted and optimized according to the application scenario and the size of the slide 134. Whether it is a small precision equipment or a large-scale automated equipment, different travel and positioning requirements can be met by reasonably setting the limit component 150.

[0038] In this embodiment, both the outer roller assembly 132 and the inner roller assembly 133 include a main shaft 1311 and a roller 1312. The main shaft 1311 is perpendicular to the slide 134, passes through the slide 134 and the timing belt 144, and is fixedly connected to the slide 134 and the timing belt 144. The roller 1312 is sleeved outside the main shaft 1311 and can rotate relative to the main shaft 1311. The roller 1312 abuts against the guide rail 120. The fixed connection between the main shaft 1311 and the slide 134 provides a stable support base for the roller 1312, allowing the roller 1312 to maintain a relatively stable position during rotation and is less likely to deviate or wobble. The close contact between the roller 1312 and the guide rail 120 effectively distributes and supports the weight and load of the equipment or system, thereby improving the load-bearing capacity and stability of the overall structure.

[0039] In this embodiment, the inner roller device 133 is an eccentric wheel, and the inner roller device 133 also includes an adjustment block 1331, which is screwed to the main shaft 1311. The adjustment block 1331 is rotated to control the tightness of the connection between the slide 134 and the synchronous belt 144, thereby controlling the slide 134 to always maintain precise linear motion.

[0040] In this embodiment, soft blocks are provided at both ends of the forward direction of the slide 134, and the soft blocks abut against the guide rails 120 on both sides. The soft blocks are configured to clean the guide rails 120. During the movement of the slide 134, the contact between the soft blocks and the guide rails 120 can effectively remove impurities such as dust, oil, metal debris, etc. on the surface of the guide rails 120, thereby maintaining the cleanliness of the guide rails 120. This is of great significance for reducing the friction, wear and noise between the guide rails 120 and the rollers 1312. The cleanliness of the guide rails 120 directly affects their service life and performance. Continuous cleaning of the guide rails 120 can prevent corrosion, wear and decreased precision caused by the accumulation of impurities, thereby extending the service life of the guide rails 120 and the entire linear motor module 100.

[0041] In this embodiment, the linear motor module 100 also includes a protective belt 160, which is fixedly connected to both ends of the base 110. The slide 134 includes a base 1341 and a cover 1342 located above the base 1341. The protective belt 160 passes between the base 1341 and the cover 1342, and the protective belt 160 covers the slot. The protective belt 160 effectively blocks pollutants such as dust, particulate matter, and liquids in the air from entering the interior of the base 110, thereby protecting precision components such as the internal guide rail 120 and the roller assembly 131 from contamination and damage. This reduces the need to clean dirt inside the base 110, reduces maintenance costs, and also extends the service life of the linear motor module 100.

[0042] To sum up, in the linear motor module 100 of the present invention, the slide 134 therein is in rolling contact with the guide rail 120 through the roller assembly 131, and the slide 134 moves relative to the guide rail 120 installed on the base 110 through the roller assembly 131, which effectively reduces the friction during sliding, making the slide 134 smoother and generating less noise during sliding. At the same time, in order to prevent the opening on the slide 134 from being imprecise, resulting in a slight offset of the slide 134, at least one of the outer roller device 132 and the inner roller device 133 in the linear motor module 100 is an eccentric wheel, so that the position of the slide 134 can be fine-tuned by the eccentric wheel to ensure that the synchronous belt 144 will not loosen, thereby allowing the slide 134 to always perform precise linear motion relative to the base 110.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A linear motor module, characterized in that: The invention comprises a base (110) and a sliding device (130), wherein a guide rail (120) is installed in the base (110), and the sliding device (130) comprises a slide seat (134) and a roller assembly (131), wherein the roller assembly (131) is fixedly connected to the slide seat (134), and the roller assembly (131) is in rolling contact with the guide rail (120), and the roller assembly (131) comprises an outer roller device (132) and an inner roller device (133). 33), along the sliding direction of the slide (134), the outer roller device (132) is located at both ends of the slide (134), and the inner roller device (133) is located between the outer roller devices (132) at both ends, and the inner roller device (133) and the outer roller device (132) are in rolling contact with the guide rails (120) on both sides respectively, and the inner roller device (133) or the outer roller device (132) is an eccentric wheel.

2. The linear motor module according to claim 1, characterized in that: The roller assembly (131) includes two inner roller devices (133), and along the sliding direction of the slide seat (134), the line connecting the axis centers of the outer roller devices (132) and the line connecting the axis centers of the inner roller devices (133) are parallel but do not overlap.

3. The linear motor module according to claim 1, characterized in that: The linear motor module further comprises a drive unit (140) and a synchronous belt (144), wherein the synchronous belt (144) passes through the slide seat (134) and is fixedly connected to the slide seat (134), and the drive unit (140) is transmission-connected to the synchronous belt (144).

4. The linear motor module according to claim 3, characterized in that: The outer roller device (132) and the inner roller device (133) both include a main shaft (1311) and a roller (1312). The main shaft (1311) is perpendicular to the slide (134). The main shaft (1311) passes through the slide (134) and the synchronous belt (144) and is fixedly connected to the slide (134) and the synchronous belt (144). The roller (1312) is sleeved outside the main shaft (1311). The roller (1312) can rotate relative to the main shaft (1311). The roller (1312) abuts against the guide rail (120). The inner roller device (133) further includes an adjustment block (1331) which is rotationally connected to the main shaft (1311).

5. The linear motor module according to claim 3, characterized in that: The driving unit (140) includes a driving motor (141), a first synchronous wheel (142) and a second synchronous wheel (143). The first synchronous wheel (142) is fixedly connected to the driving motor (141). The synchronous belt (144) is sleeved outside the first synchronous wheel (142) and the second synchronous wheel (143). The first synchronous wheel (142) drives the second synchronous wheel (143) to rotate synchronously through the synchronous belt (144).

6. The linear motor module according to claim 3, characterized in that: The sliding device (130) further includes a clamping plate (135), the clamping plates (135) being located at both ends of the travel direction of the slide seat (134), the clamping plates (135) being fixedly connected to the slide seat (134), and the clamping plates (135) clamping the synchronous belt (144).

7. The linear motor module according to claim 1, characterized in that: The base (110) includes a bottom wall (111) and side walls (112) located on both sides of the bottom wall (111); one end of the base (110) facing away from the bottom wall (111) is a slot, and the slide (134) is installed in the slot; a guide groove (1121) is provided on the opposite side of the side wall (112), and the guide rail (120) is installed in the guide groove (1121).

8. The linear motor module according to claim 7, characterized in that: The linear motor module further includes a limiting component (150), the limiting component (150) including a photoelectric module (151) and a sensing sheet (152), the photoelectric modules (151) being located at both ends of the travel direction of the slide (134), the photoelectric module (151) being located on the side of the side wall (112) facing away from the bottom wall (111), and a sensing sheet (152) being provided on the side of the slide (134) facing the photoelectric module (151).

9. The linear motor module according to claim 7, characterized in that: The linear motor module further comprises a protective belt (160), wherein the protective belt (160) is fixedly connected to both ends of the base (110), and the slide (134) comprises a seat body (1341) and a cover body (1342) located above the seat body (1341), and the protective belt (160) passes between the seat body (1341) and the cover body (1342), and the protective belt (160) covers the slot.

10. The linear motor module according to claim 1, characterized in that: Soft blocks are provided at both ends of the sliding seat (134) in the forward direction, the soft blocks abut against the guide rails (120) on both sides, and the soft blocks are configured to clean the guide rails (120).

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