Closed type synchronous belt linear module

Abstract

The utility model discloses a closed synchronous belt linear module belongs to automation technical field, including drive unit, transmission unit, guide unit and mobile platform, transmission unit and guide unit set up in the inside of a base, and the base whole presents the box structure, and the upper end of base is provided with the travel slot of linear movement for mobile platform. Transmission unit is connected with mobile platform through connecting piece, and the positioning groove recess of connecting piece and the protruding of synchronous belt, improve the positioning function and antiskid and prevent the performance of connecting piece and mobile platform of slipping and prevent the performance, improve transmission stability, at the same time, through the depth of adjusting synchronous belt into the positioning groove, realize the fine adjustment of tensioning degree, avoid the demand of additional tensioning mechanism, simplify the installation and maintenance process, improve the assembly efficiency. In addition, the setting of clamping protruding block and clamping recess enhances the assembly precision and connecting strength of connecting piece and mobile platform, reduces the risk of running loose.

Description

Technical Field

[0001] This utility model belongs to the field of automation technology, and in particular relates to a closed synchronous belt linear module. Background Technology

[0002] Synchronous belt linear slides are widely used in automation due to their significant advantages of lower cost than screw drives and simpler maintenance than chain drives. They are not only commonly used for material handling and precise positioning, but also provide stable and reliable linear motion control, ensuring accurate workpiece positioning and smooth operation during processing, thereby significantly improving production efficiency and product yield.

[0003] However, after long-term continuous operation, the timing belt may wear and stretch, leading to belt slack and affecting positioning accuracy and transmission efficiency. Therefore, regular adjustment of belt tension is particularly important. Currently, tension adjustment usually relies on additional tensioning devices, which not only increase the complexity of the mechanical structure but also introduce more technical requirements and time costs during installation, commissioning, and subsequent maintenance. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a closed synchronous belt linear module, which sets a tension adjustment structure through the connector, thereby avoiding the mechanical complexity and maintenance costs increased by relying on an additional tensioning device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A closed synchronous belt linear module includes a drive unit, a transmission unit, a guide unit, and a moving platform. The transmission unit and the guide unit are disposed inside a base. The base is a box structure, and the upper end of the base is provided with a stroke groove for the linear movement of the moving platform.

[0007] The guide unit includes a linear guide rail and a slider. The linear guide rail extends in the same direction as the stroke groove. The slider is slidably connected to the linear guide rail. The lower end of the moving platform is located inside the base and is fixedly connected to the slider. The upper end of the moving platform is located outside the base and is provided with a sealing component between it and the stroke groove.

[0008] The transmission unit includes a driving wheel, a driven wheel, and a synchronous belt. The driving wheel is connected to the driven wheel via the synchronous belt. The two ends of the synchronous belt are connected to the two ends of the moving platform via connectors, which include a tension adjustment structure. The driving wheel is driven to rotate by the drive unit, thereby enabling the moving platform to move linearly along the linear guide rail.

[0009] Furthermore, the sealing assembly includes a slide top cover and a sealing strip. The slide top cover is bolted to the upper end of the moving platform. The moving platform and the slide top cover enclose a belt passage space that is closed on the top and sides. The upper end of the moving platform has an isosceles trapezoidal boss. One end of the sealing strip is fixedly connected to one end of the travel groove, and the other end extends through the belt passage space and connects to the other end of the travel groove.

[0010] It effectively prevents dust, moisture and other foreign objects from entering the base, avoiding contamination or wear on the transmission and guide units, thereby extending the module's service life, significantly improving product qualification rate and reducing maintenance costs.

[0011] Furthermore, the bottom of the belt passage space has a belt passage hole for the sealing belt to pass through. A guide roller is located above the belt passage hole in the belt passage space, and support rollers are located at both ends of the top of the isosceles trapezoidal boss. These are used to support and guide the sealing belt, ensuring its smooth movement and reducing frictional resistance.

[0012] Furthermore, the connector is fixedly connected to the bottom of the moving platform by bolts. The end of the connector away from the moving platform has a positioning groove into which one end of the synchronous belt extends. Multiple grooves are evenly spaced at the bottom of the positioning groove, and a corresponding protrusion is provided on the side of the synchronous belt facing the groove. The connector also includes a positioning hole extending from the top to the bottom of the positioning groove, through which bolts can be used to fix the synchronous belt to the positioning groove.

[0013] Its effects are as follows: the interplay of grooves and protrusions achieves positioning and anti-slip / anti-detachment between the synchronous belt and the connector, enhancing transmission stability; furthermore, the structure of the protrusions embedded in the grooves simplifies the installation process and improves assembly efficiency; additionally, the tension of the synchronous belt can be adjusted: by changing the depth of the synchronous belt end extending into the positioning groove of the connector, selecting different positions for the grooves to engage with the protrusions on the synchronous belt, and then tightening the bolts to fix the connector and the synchronous belt, fine-tuning of the synchronous belt tension can be achieved. This design eliminates the need for an additional tension adjustment mechanism and facilitates on-site installation and maintenance.

[0014] Furthermore, the connector has a snap-fit ​​protrusion at one end near the mobile platform, and the bottom of the mobile platform has a snap-fit ​​groove into which the snap-fit ​​protrusion engages.

[0015] Its effects are: improved assembly accuracy and connection strength between connectors and mobile platform, reduced risk of loosening during operation, thereby enhancing the overall reliability and service life of the module.

[0016] Furthermore, the drive assembly includes a drive motor and a reducer. The output end of the drive motor is connected to the input end of the reducer. The output end of the reducer is provided with a drive wheel, and one end of the drive wheel is provided with a transmission wheel. The drive wheel is connected to the transmission wheel via a transmission belt.

[0017] Since the motor output speed is usually high, but the actual operating speed of the belt module is low, the load capacity can be improved by setting a speed reducer to reduce the output speed and increase the torque.

[0018] Furthermore, the drive unit also includes a protective cover, with the drive wheel, transmission belt, and transmission wheel all located inside the protective cover.

[0019] Furthermore, there are two sliders, symmetrically arranged relative to the moving platform. This symmetrical arrangement of the two sliders evenly distributes the motion load of the moving platform, enhances the rigidity and stability of the guiding system, and effectively prevents vibration, off-center loading, or jamming during high-speed operation, thereby improving the overall positioning accuracy and service life of the module.

[0020] The beneficial technical effects of this utility model are as follows:

[0021] 1. The positioning grooves on the connectors and the protrusions on the synchronous belt enhance the positioning function and anti-slip / anti-detachment performance of the synchronous belt and connectors, thereby improving transmission stability. Simultaneously, by adjusting the depth of the synchronous belt entering the positioning groove, fine-tuning of tension is achieved, eliminating the need for an additional tensioning mechanism, simplifying installation and maintenance processes, and improving assembly efficiency. Furthermore, the snap-fit ​​protrusions and grooves enhance the assembly accuracy and connection strength between the connectors and the moving platform, reducing the risk of loosening during operation.

[0022] 2. By installing a speed reducer in the drive unit, the output speed is reduced and the torque is increased, thereby improving the load capacity; at the same time, the protective cover protects the drive wheel, transmission belt and transmission wheel, prevents external interference, and ensures the reliable operation of the drive system.

[0023] 3. By setting up a sealing component, dust, moisture and other foreign objects are effectively prevented from entering the base, avoiding contamination or wear on the transmission unit and guide unit, extending the service life of the module and significantly improving the product qualification rate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall structure of this utility model (excluding the base);

[0026] Figure 3 yes Figure 2 Enlarged view of part A;

[0027] Figure 4 This is a schematic diagram of the connection structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the mobile platform of this utility model;

[0029] Figure 6 This is a cross-sectional view of the mobile platform of this utility model;

[0030] Figure 7 This is a schematic diagram of the drive unit of this utility model;

[0031] The parts in the attached diagram are labeled as follows:

[0032] 1. Drive unit; 11. Drive motor; 12. Reducer; 121. Drive wheel; 13. Transmission belt; 14. Protective cover;

[0033] 2. Transmission unit; 21. Drive wheel; 211. Transmission wheel; 22. Driven wheel; 23. Synchronous belt; 231. Protrusion; 24. Connector; 241. Positioning groove; 242. Groove; 243. Positioning hole; 244. Snap-fit ​​protrusion;

[0034] 3. Guide unit; 31. Linear guide rail; 32. Slider;

[0035] 4. Moving platform; 41. Slide cover; 42. Belt passage space; 421. Belt passage hole; 43. Isosceles trapezoidal boss; 44. Guide roller; 45. Support roller; 46. Snap-fit ​​groove;

[0036] 5. Base; 21. Stroke groove; 22. Sealing strip;

[0037] 6. Limit switches;

[0038] 7. Photoelectric sensor. Detailed Implementation

[0039] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0040] This specific embodiment discloses in detail a closed synchronous belt linear module, such as... Figures 1 to 7As shown, the drive unit 1 is fixed to one end of the base 5, and includes a drive motor 11 and a reducer 12. The output shaft of the drive motor 11 is directly connected to the input shaft of the reducer 12 through a coupling. A drive wheel 121 is fixed on the output shaft of the reducer 12. The drive wheel 121, the transmission belt 13 and the transmission wheel 211 are all completely covered by a protective cover 14 to prevent interference from external dust and foreign objects. The transmission unit 2 is located inside the base 5 and includes a drive wheel 21 and a driven wheel 22. One end of the drive wheel 21 is provided with a transmission wheel 211, which is connected to the drive wheel 121 via a transmission belt 13. The synchronous belt 23 surrounds the drive wheel 21 and the driven wheel 22, and its two ends are fixed to the bottom of the moving platform 4 via connectors 24. The connector 24 is provided with a positioning groove 241, and multiple grooves 242 are evenly distributed at the bottom of the positioning groove 241. The end of the synchronous belt 23 is provided with a corresponding protrusion 231, which can be embedded in the grooves 242 at different positions. The synchronous belt 23 is tightened by bolts passing through the positioning holes 243 to achieve fine adjustment of the tension of the synchronous belt 23. The end of the connector 24 near the moving platform 4 is provided with a snap-fit ​​protrusion 244, and the bottom of the moving platform 4 is provided with a snap-fit ​​groove 46. The snap-fit ​​protrusion 244 is embedded in the snap-fit ​​groove 46 to enhance the assembly accuracy and connection strength. The guide unit 3 includes a linear guide rail 31 and two sliders 32. The linear guide rail 31 is fixed parallel to the inside of the base 5, and its extension direction is consistent with the stroke groove 51. The sliders 32 are slidably connected to the linear guide rail 31. The lower end of the moving platform 4 is fixed to the sliders 32 to ensure that the load is evenly distributed and to improve the guiding rigidity and stability. The upper end of the moving platform 4 is bolted to the slide top cover 41, and the two enclose the top and sides to form a belt passage space 42. The bottom of the belt passage space 42 is provided with a belt passage hole 421. The guide roller 44 is installed above the belt passage hole 421. The support roller 45 is fixed to the top two ends of the isosceles trapezoidal boss 43 to support and guide the sealing strip 22. One end of the sealing strip 22 is fixed to the starting end of the stroke groove 51, and the other end extends through the belt passage space 42 and the belt passage hole 421 and is fixed to the ending end of the stroke groove 51, effectively preventing dust and moisture from entering the interior of the base 5. Limit switches 6 are installed at both ends of the travel groove 51 of the base 5, photoelectric sensors 7 are installed on the base, and the moving platform is equipped with corresponding sensing plates to detect the position of the moving platform 4 and control its movement range. When the drive motor 11 starts, the reducer 12 reduces the speed and increases the torque. The drive wheel 121 drives the drive wheel 21 to rotate through the transmission belt 13, and the synchronous belt 23 pulls the moving platform 4 to move linearly along the linear guide rail 31, realizing precise positioning and conveying of the workpiece.

[0041] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A closed-type synchronous belt linear module, characterized in that: It includes a drive unit, a transmission unit, a guide unit, and a moving platform. The transmission unit and the guide unit are disposed inside a base. The base is a box-shaped structure. The upper end of the base is provided with a travel groove for the linear movement of the moving platform. The guide unit includes a linear guide rail and a slider. The linear guide rail extends in the same direction as the travel groove. The slider is slidably connected to the linear guide rail. The lower end of the moving platform is located inside the base and is fixedly connected to the slider. The upper end of the moving platform is located outside the base and is provided with a sealing component between it and the travel groove. The transmission unit includes a driving wheel, a driven wheel, and a synchronous belt. The driving wheel is connected to the driven wheel via the synchronous belt. The two ends of the synchronous belt are respectively connected to the two ends of the moving platform via connectors, and the connectors include a tension adjustment structure. The driving wheel is driven to rotate by the drive unit, thereby realizing the linear movement of the moving platform along the linear guide rail.

2. The enclosed synchronous belt linear module according to claim 1, characterized in that: The sealing assembly includes a slide top cover and a sealing strip. The slide top cover is bolted to the upper end of the moving platform. The moving platform and the slide top cover form a belt passage space that is closed on the top and sides. The upper end of the moving platform has an isosceles trapezoidal boss. One end of the sealing strip is fixedly connected to one end of the travel groove, and the other end extends through the belt passage space and connects to the other end of the travel groove.

3. The enclosed synchronous belt linear module according to claim 2, characterized in that: The bottom of the belt passage space has a belt passage hole for the sealing belt to pass through. A guide roller shaft is provided above the belt passage hole in the belt passage space, and support rollers are provided at both ends of the top of the isosceles trapezoidal boss.

4. The enclosed synchronous belt linear module according to claim 1, characterized in that: The connector is fixedly connected to the bottom of the mobile platform by bolts. The end of the connector away from the mobile platform is provided with a positioning groove for one end of the synchronous belt to extend into. The bottom of the positioning groove is provided with a plurality of grooves evenly spaced. The side of the synchronous belt facing the groove is provided with a corresponding protrusion.

5. The enclosed synchronous belt linear module according to claim 4, characterized in that: The connector has a snap-fit ​​protrusion at one end near the mobile platform, and the bottom of the mobile platform has a snap-fit ​​groove for the snap-fit ​​protrusion to snap into.

6. The enclosed synchronous belt linear module according to claim 1, characterized in that: The drive assembly includes a drive motor and a reducer. The output end of the drive motor is connected to the input end of the reducer. The output end of the reducer is provided with a drive wheel. One end of the drive wheel is provided with a transmission wheel. The drive wheel is connected to the transmission wheel via a transmission belt.

7. The enclosed synchronous belt linear module according to claim 6, characterized in that: The drive unit also includes a protective cover, and the drive wheel, the transmission belt and the transmission wheel are all located inside the protective cover.

8. The enclosed synchronous belt linear module according to claim 1, characterized in that: There are two sliders, which are symmetrically arranged with respect to the moving platform.

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