Self-lubricating organ cover type rack and pinion linear module

Abstract

The utility model relates to mechanical transmission device technical field, concretely discloses a kind of self-lubricating organ cover rack and pinion linear module, comprising: aluminium profile base, aluminium profile base two sides symmetrical linear guide rail is provided, linear guide rail is slidably installed with sliding table assembly, aluminium profile base one end is provided with organ cover, and aluminium profile base top is provided with driving assembly.This device adopts helical gear helical rack linear transmission structure and tensioning block adjusting structure combination, make transmission meshing gap adjustable, operation process is more stable, noise and vibration significantly reduce;Self-lubrication is realized by felt wheel and external oil nozzle, maintenance does not need to disassemble organ cover, maintenance is convenient;Bilateral linear guide rail is symmetrically arranged, and overall rigidity and bearing capacity are strong, especially suitable for Z axis and heavy load working condition;Follow-up organ cover forms integral protection to transmission and guiding component, compact structure, stroke utilization rate is high, adapt to many dust and other harsh environments.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission device technology, specifically a self-lubricating bellows-type gear rack linear module. Background Technology

[0002] Linear modules, as important actuators in automated equipment, industrial robots and CNC equipment, are widely used in material handling, assembly positioning and loading / unloading scenarios.

[0003] However, existing solutions have significant drawbacks: First, while the bellows cover, as an external protective component, can prevent grease splashing and external contaminants from entering, its installation often occupies a large stroke compression ratio, resulting in a shortened effective stroke and affecting the overall efficiency and applicability of the module. Second, the operating noise generated during gear and rack transmission is relatively high, especially under high-speed or high-load conditions, where vibration and noise are further amplified, affecting the stability and service life of the equipment. Furthermore, existing lubrication methods mostly involve internal oil injection, requiring the removal of the cover for maintenance, which is inconvenient and prone to insufficient lubrication or contamination in harsh environments. Utility Model Content

[0004] The purpose of this invention is to provide a self-lubricating bellows-type gear and rack linear module to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a self-lubricating bellows-type gear rack linear module, comprising an aluminum profile base, linear guide rails symmetrically arranged on both sides of the aluminum profile base, a slide table assembly slidably mounted on the linear guide rails, a bellows cover provided at one end of the aluminum profile base, and a drive assembly provided above the aluminum profile base.

[0006] In a preferred embodiment of this invention, the drive assembly includes a helical rack disposed along the length of an aluminum profile base, a helical gear meshing with the helical rack, a reducer mounting plate disposed above the slide assembly, a planetary reducer disposed above the reducer mounting plate, the input end of the planetary reducer being connected to the output end of a servo motor, and the planetary reducer being connected to a self-lubricating assembly.

[0007] As a preferred embodiment of the present invention, the drive assembly includes a tensioning block between the reducer mounting plate and the aluminum profile base, and the tensioning block is connected to the reducer mounting plate by screws.

[0008] In a preferred embodiment of this invention, the self-lubricating component includes a felt wheel disposed next to the helical gear, the felt wheel being in contact with the helical rack, the felt wheel being connected to the output end of the planetary reducer, and the felt wheel being connected to an external grease nipple.

[0009] As a preferred embodiment of this utility model, a sensor mounting plate is fixedly provided on the slide assembly, a sensor is provided on the sensor mounting plate, a sensing sheet is provided at a corresponding position on the aluminum profile base, and an external oil nozzle is provided on the slide assembly.

[0010] As a preferred embodiment of this utility model, the bellows cover is arranged along the length of the aluminum profile base, one end of the bellows cover is connected to the aluminum profile base, and the other end of the bellows cover is connected to the slide assembly.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the self-lubricating bellows-style gear and rack linear module: 1. The self-lubricating component, which connects the external oil nozzle and the felt wheel, enables lubrication and maintenance of linear guides, sliders, helical gears, and helical racks without disassembling the bellows cover. This significantly improves the convenience of maintenance and solves the problems of cumbersome operation and easy contamination associated with traditional internal oiling methods.

[0012] 2. The structure adopts a tensioning block adjustment mechanism with helical gears and helical racks, which makes the transmission meshing clearance adjustable, the operation more stable, and the noise and vibration significantly reduced; the linear guides are symmetrically installed on both sides to ensure stable operation, smooth transmission mechanism, and low vibration, effectively improving the overall rigidity and torsional resistance, and is especially suitable for Z-axis load and off-center load conditions.

[0013] 3. The bellows cover and slide assembly extend and retract accordingly, forming an overall enclosed protection for the gear rack, linear guide, and lubrication parts, and can still maintain stable operation in harsh environments such as high temperature and high dust; moreover, the overall structure is compact and the stroke utilization rate is high, reducing the occupation of the effective stroke by the compression of the bellows cover. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the rear view structure; Figure 3 This is a schematic diagram of the drive component structure of this utility model; Figure 4 This is a schematic diagram of the drive assembly and slide assembly of this utility model; Figure 5 For this Figure 2 Schematic diagram of the structure at point A in the middle.

[0015] Reference numerals in the attached drawings: 1. Aluminum profile base; 2. Linear guide rail; 3. Slide assembly; 4. Bellows cover; 5. Drive assembly; 6. Guide rail slider; 7. Helical rack; 8. Helical gear; 9. Reducer mounting plate; 10. Planetary reducer; 11. Servo motor; 12. Self-lubricating assembly; 13. Tensioning block; 14. Felt wheel; 15. External oil nozzle; 16. Sensor mounting plate; 17. Sensor; 18. Sensing plate; 19. Induction plate; 20. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Referring to the attached diagrams in the instruction manual Figure 1 As shown, this utility model provides a technical solution: a self-lubricating bellows-type gear rack linear module, including an aluminum profile base 1, linear guide rails 2 symmetrically arranged on both sides of the aluminum profile base 1, a slide table assembly 3 slidably mounted on the linear guide rails 2, a bellows cover 4 provided at one end of the aluminum profile base 1, and a drive assembly 5 provided above the aluminum profile base 1.

[0018] As an optimized solution of this utility model, the aluminum profile base 1 is the main load-bearing structure of the linear module and provides an installation platform for other components; the slide assembly 3 is guided and supported by the linear guide rail 2 and reciprocates along the length of the aluminum profile base 1 to achieve stable and precise linear motion output.

[0019] Referring to the attached diagrams in the instruction manual Figures 1-3 As shown, the drive assembly 5 includes a helical rack 51 arranged along the length direction on the aluminum profile base 1, a helical gear 52 meshing with the helical rack 51, a reducer mounting plate 53 arranged above the slide assembly 3, a planetary reducer 54 arranged above the reducer mounting plate 53, the input end of the planetary reducer 54 is connected to the output end of the servo motor 55, and the planetary reducer 54 is connected to the self-lubricating assembly 56.

[0020] As an optimized solution of this utility model, the reducer mounting plate 53 serves as the mounting base for the drive assembly 5, ensuring installation accuracy and overall stability; the helical rack 51 meshes with the helical gear 52, converting the rotational motion of the servo motor 55 into linear motion, improving transmission efficiency and reducing operating noise and impact vibration; the planetary reducer 54 is used to reduce and increase the torque of the high-speed, low-torque power output by the servo motor 55, so that the output torque meets the load requirements of the gear and rack linear transmission.

[0021] Referring to the attached diagrams in the instruction manual Figure 4As shown, the drive assembly 5 includes a tension block 57 between the reducer mounting plate 53 and the aluminum profile base 1. The tension block 57 is connected to the reducer mounting plate 53 by screws.

[0022] As an optimized solution of this utility model, the tension block 57 is used to finely adjust the position of the reducer and the helical gear 52. By adjusting the tension block 57, the meshing gap between the helical gear 52 and the helical rack 51 can be precisely adjusted, thereby reducing transmission noise and wear.

[0023] Referring to the attached diagrams in the instruction manual Figure 3 As shown, the self-lubricating component 56 includes a felt wheel 561 disposed next to the helical gear 52. The felt wheel 561 is in contact with the helical rack 51, the felt wheel 561 is connected to the output end of the planetary reducer 54, and the felt wheel 561 is connected to an external oil nozzle 562.

[0024] As an optimized solution of this utility model, the external oil nozzle 562 is connected to the felt wheel 561, so that the helical gear 52 and the helical rack 51 can be evenly lubricated without disassembling the bellows cover 4.

[0025] Referring to the attached diagrams in the instruction manual Figures 1-5 As shown, a sensor mounting plate 31 is fixedly installed on the slide assembly 3, a sensor 32 is installed on the sensor mounting plate 31, a sensing sheet 33 is installed at the corresponding position on the aluminum profile base 1, and an external oil nozzle 562 is installed on the slide assembly 3.

[0026] As an optimized solution of this utility model, sensor 32 is used to detect the running position of slide assembly 3 and feed back a signal to the control system to achieve position control or stroke protection.

[0027] Referring to the attached diagrams in the instruction manual Figures 1-2 As shown, the bellows cover 4 is arranged along the length of the aluminum profile base 1. One end of the bellows cover 4 is connected to the aluminum profile base 1, and the other end of the bellows cover 4 is connected to the slide assembly 3.

[0028] As an optimized solution of this utility model, the bellows cover 4 is a retractable protective structure, with its two ends fixed to the aluminum profile base 1 and the slide assembly 3 respectively. It is used to provide overall enclosed protection for the gear rack, linear guide rail 2 and self-lubricating assembly 56, preventing dust, high-temperature particles from entering and lubricating oil from splashing out.

[0029] Working principle: During use, after the servo motor 55 starts, the planetary reducer 54 reduces and amplifies the torque, transmitting the rotational power to the helical gear 52. The helical gear 52 meshes with the helical rack 51 fixed on the aluminum profile base 1, stably converting the rotational motion into the linear reciprocating motion of the slide assembly 3 along the length of the aluminum profile base 1. During the movement, the slide assembly 3 is synchronously guided and supported by the linear guide rails 2 and their guide rail sliders 21 set on both sides of the aluminum profile base 1, ensuring the straightness, parallelism, and load-bearing stability during the movement. At the same time, the tensioning block 57 finely adjusts the position of the reducer mounting plate 53, so that the helical gear 52 and the helical rack 51 always maintain a suitable meshing clearance, thereby reducing operating noise and transmission vibration. During operation and maintenance, lubricating oil is injected through the external grease nipple 562 and continuously coated by the felt wheel 561 onto the meshing area of ​​the helical gear 52 and the helical rack 51. It also replenishes oil to the linear guide rail 2 through the internal lubrication channel of the guide rail slider 21, achieving self-lubricating maintenance without disassembling the bellows cover 4. The bellows cover 4 extends and retracts synchronously with the slide assembly 3, forming a complete enclosed protection for the gears, rack, linear guide rail 2, and lubrication points, preventing dust intrusion and lubricating oil splashing. The sensor mounting plate 31 and sensor 32 are fixed on the slide assembly 3, and the position of the sensor plate 33 fixed on the base is detected in real time as the movement progresses, providing feedback on operating data to achieve precise position control. Ultimately, while ensuring high precision and low noise operation, this device can be stably and long-term applied to linear motion applications under harsh conditions such as high loads and high dust levels.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-lubricating bellows-style gear and rack linear module, comprising: An aluminum profile base (1) is characterized in that: linear guide rails (2) are symmetrically arranged on both sides of the aluminum profile base (1), a slide assembly (3) is slidably installed on the linear guide rails (2), a bellows cover (4) is provided at one end of the aluminum profile base (1), and a drive assembly (5) is provided above the aluminum profile base (1). The drive assembly (5) includes a helical rack (51) arranged along the length direction on an aluminum profile base (1), a helical gear (52) meshing with the helical rack (51), a reducer mounting plate (53) is arranged above the slide assembly (3), a planetary reducer (54) is arranged above the reducer mounting plate (53), the input end of the planetary reducer (54) is connected to the output end of the servo motor (55), and the planetary reducer (54) is connected to the self-lubricating assembly (56).

2. The self-lubricating bellows-type gear and rack linear module according to claim 1, characterized in that: The drive assembly (5) includes a tension block (57) between the reducer mounting plate (53) and the aluminum profile base (1), and the tension block (57) is connected to the reducer mounting plate (53) by screws.

3. The self-lubricating bellows-type gear and rack linear module according to claim 2, characterized in that: The self-lubricating component (56) includes a felt wheel (561) disposed next to the helical gear (52), the felt wheel (561) is in contact with the helical rack (51), the felt wheel (561) is connected to the output end of the planetary reducer (54), and the felt wheel (561) is connected to an external oil nozzle (562).

4. A self-lubricating bellows-style gear and rack linear module according to claim 3, characterized in that: A sensor mounting plate (31) is fixedly installed on the slide assembly (3), a sensor (32) is installed on the sensor mounting plate (31), a sensing sheet (33) is installed on the aluminum profile base (1) at the corresponding position, and an external oil nozzle (562) is installed on the slide assembly (3).

5. A self-lubricating bellows-type gear and rack linear module according to claim 4, characterized in that: The bellows cover (4) is arranged along the length of the aluminum profile base (1), with one end of the bellows cover (4) connected to the aluminum profile base (1) and the other end of the bellows cover (4) connected to the slide assembly (3).

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