Linear module with high torque resistance

Abstract

The utility model provides a kind of high torsional rigidity linear module, including base and the moving seat of along base sliding, the inner wall of base both sides is equipped with guide slide along its length direction, the both sides of moving seat are equipped with the auxiliary slide way extending along base length direction, auxiliary slide way is slidably connected with the first rolling chain and the second rolling chain formed by a plurality of ball string connection, first rolling chain and second rolling chain are arranged in parallel up and down, first rolling chain is close to base bottom, the ball on first rolling chain and second rolling chain is slidably contacted with auxiliary slide way and simultaneously with guide slide, the intersection point of the line of the contact point of the ball on first rolling chain with guide slide and the contact point of the ball on second rolling chain with auxiliary slide way is located in the outside of moving seat, the intersection point line of the line of the both sides of moving seat forms O type structure;The O type structure in the utility model can improve the torsional rigidity of module, can enhance the load capacity of linear module, to prolong the service life of linear module.

Description

Technical Field

[0001] This utility model belongs to the technical field of linear modules, and in particular relates to a linear module with high torque resistance. Background Technology

[0002] Linear modules, as mechanical structures that realize linear reciprocating motion, are widely used in automation equipment, CNC machine tools, electronic manufacturing, logistics and transportation, and other fields. Their core function is to drive the load to complete precise position adjustment and motion transmission by moving the base stably along the base. With the continuous improvement of industrial automation, downstream application scenarios have increasingly stringent performance requirements for linear modules. They not only need to ensure high-precision motion positioning, but also need to have stronger load-bearing capacity and torque resistance to adapt to long-term stable operation under heavy loads, high-speed motion, or complex working conditions.

[0003] However, existing linear modules have significant defects in their torque resistance design. Traditional linear modules typically employ a sliding structure with a single or double parallel roller chain. The contact between the roller chain and the guide rails and auxiliary slides is mostly a single-plane contact, resulting in the intersection of the lines connecting the contact points between the rollers and the guide rails, and between the rollers and the auxiliary slides, concentrated on the inner side of the moving base. The lines connecting these two intersection points form an X-shaped structure. This X-shaped structure concentrates the force transmission path in the middle of the moving base. When the moving base bears a heavy load or is subjected to lateral forces, stress concentration easily occurs at the connection between the base and the moving base, resulting in significantly insufficient torque resistance.

[0004] Therefore, there is a need to provide a linear module with high torque resistance. Utility Model Content

[0005] The main objective of this invention is to provide a linear module with high torque resistance, addressing the shortcomings of existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A linear module with high torque resistance includes a base and a movable seat that slides along the base. Guide strips are provided on the inner walls of both sides of the base along its length. Auxiliary slides extending along the length of the base are provided on both sides of the movable seat. A first roller chain and a second roller chain, each consisting of a ring structure formed by several balls, are slidably connected to the auxiliary slides. The first and second roller chains are arranged parallel vertically. The first roller chain is close to the bottom of the base. The balls on both the first and second roller chains slide in contact with the auxiliary slides and simultaneously with the guide strips. The intersection of the lines connecting the tangent points of the balls on the first roller chain and the guide strips and the tangent points of the balls on the second roller chain and the auxiliary slides is located outside the movable seat. The intersection of these lines on both sides of the movable seat forms an O-shaped structure.

[0008] As a preferred embodiment of the linear module with high torque resistance described in this utility model, the upper surface of the guide strip is slidably connected to the second roller chain, and the lower surface of the guide strip is slidably connected to the first roller chain.

[0009] As a preferred embodiment of the linear module with high torque resistance described in this utility model, the guide strip has an inverted K-shaped structure.

[0010] As a preferred embodiment of the linear module with high torque resistance described in this utility model, the inner walls on both sides of the base are provided with embedded grooves along their length direction, and the guide strip is fixed in the embedded grooves along the length direction of the base.

[0011] As a preferred embodiment of the linear module with high torque resistance described in this utility model, the auxiliary slide is provided with a first slide and a second slide parallel to each other on the side facing the guide strip on the same side, and the first slide is close to the bottom of the base.

[0012] As a preferred embodiment of the linear module with high torque resistance described in this utility model, the first slide rail is slidably connected to the first roller chain, and the second slide rail is slidably connected to the second roller chain.

[0013] As a preferred embodiment of the linear module with high torque resistance described in this utility model, it further includes a front end cover, a first bearing, a lead screw, a lead screw nut, a bearing pressure plate, a second bearing, and a fixed base. The front end cover is located at the front end of the base. The front end of the lead screw is connected to the front end cover through the first bearing, and the rear end of the lead screw is connected to the fixed base through the second bearing. The lead screw passes through the movable base. The lead screw nut is sleeved on the outer circumference of the lead screw and fixedly connected to the front end of the movable base. The second bearing is fixed in the fixed base through the bearing pressure plate.

[0014] As a preferred embodiment of the linear module with high torque resistance described in this utility model, the rear end of the lead screw passes through the fixed base and is fixedly connected to the rear end of the fixed base by a locking nut.

[0015] As a preferred embodiment of the linear module with high torque resistance described in this utility model, a retaining ring is provided between the locking nut and the fixing seat.

[0016] Compared with the prior art, the present invention will have at least the following beneficial effects:

[0017] The contact design of the first roller chain, the second roller chain, the guide rail, and the auxiliary slide rail in this utility model ensures that the intersection of the lines connecting the contact points of the balls on the first roller chain with the auxiliary slide rail and the guide rail, and the contact points of the balls on the second roller chain with the auxiliary slide rail and the guide rail, is located on the outside of the moving base. The intersection of the lines connecting the two sides of the moving base forms an elliptical O-shaped structure. The O-shaped structure can evenly distribute the pressure generated by the load on the moving base to the guide rail and auxiliary slide rail on the inner walls of both sides of the base, expanding the pressure transmission range, effectively reducing the local stress concentration of the base, improving the torque resistance of the linear module, enabling it to stably bear heavier loads, avoiding component wear and deformation caused by pressure concentration, and significantly extending the service life of the module. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort, wherein:

[0019] Figure 1 This is a structural schematic diagram of a linear module with high torque resistance according to the present invention;

[0020] Figure 2 This is an exploded view of a linear module with high torque resistance according to the present invention.

[0021] Figure 3 This is a front view of a linear module with high torque resistance according to the present invention.

[0022] Figure 4 This is a schematic diagram of the torque-resistant O-type structure of a linear module with high torque resistance according to the present invention;

[0023] Figure 5 for Figure 4 Enlarged view of point A;

[0024] Figure 6This is a schematic diagram of the anti-torque X-shaped structure of a linear module in the prior art;

[0025] Figure 7 for Figure 6 Enlarged view of point B in the image.

[0026] The reference numerals in the figures include:

[0027] 1. Base; 2. Movable seat; 3. Embedded groove; 4. Guide strip; 5. Auxiliary slide; 6. Ball bearing; 7. First roller chain; 8. Second roller chain; 9. Intersection of connecting lines; 10. First slide; 11. Second slide; 12. Front end cover; 13. First bearing; 14. Lead screw; 15. Lead screw nut; 16. Second bearing; 17. Fixed seat; 18. Bearing pressure plate; 19. Locking nut; 20. Retaining ring. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely exemplary embodiments of this utility model, and not the only embodiments.

[0029] like Figures 1 to 7 As shown, a linear module with high torque resistance includes a base 1 and a movable seat 2 that slides along the base 1. The movable seat 2 carries components that need to move along the length of the base 1.

[0030] Both sides of the base 1 have embedded grooves 3 along their length, and both sides of the base 1 have guide strips 4 along their length. The guide strips 4 are fixed in the embedded grooves 3 along the length of the base 1. The guide strips 4 are located in the embedded grooves 3 to facilitate their fixation to the inner walls of the base 1. Both sides of the movable seat 2 have auxiliary slides 5 extending along the length of the base 1. A first roller chain 7 and a second roller chain 8, which are formed by several balls 6 in a ring structure, are slidably connected to the auxiliary slides 5. The first roller chain 7 and the second roller chain 8 are arranged parallel to each other vertically, with the first roller chain 7 closer to the bottom of the base 1. The guide strips 4 allow the balls 6 on the first roller chain 7 and the second roller chain 8 to slide along the guide strips 4. It should be noted that the surface of the guide strips 4 is smooth, which improves the moving speed of the first roller chain 7 and the second roller chain 8.

[0031] In this configuration, the upper surface of the guide strip 4 is slidably connected to the second roller chain 8, while the lower surface of the guide strip 4 is slidably connected to the first roller chain 7. This arrangement ensures that the first roller chain 7 and the second roller chain 8 are arranged parallel to each other on the upper and lower surfaces of the guide strip 4, allowing the balls 6 on the first roller chain 7 and the second roller chain 8 to slide slidably connect with the lower surface of the guide strip 4, respectively. It should be noted that the lower surface of the guide strip 4 is close to the bottom of the base 1, while the upper surface of the guide strip 4 is far from the bottom of the base 1.

[0032] In order to further enable the balls 6 on the first roller chain 7 and the second roller chain 8 to slide stably on the lower surface and the upper surface of the guide strip 4, so that a number of balls 6 on the first roller chain 7 and a number of balls 6 on the second roller chain 8 can contact the lower surface and the upper surface of the guide strip 4 respectively, in this embodiment, the guide strip 4 is configured as an inverted K-shaped structure.

[0033] like Figures 3 to 5 As shown, the balls 6 on the first roller chain 7 and the second roller chain 8 are in sliding contact with the auxiliary slide rail 5 and simultaneously in sliding contact with the guide rail 4. That is, the balls 6 on the first roller chain 7 are in sliding contact with both the auxiliary slide rail 5 and the guide rail 4, and the balls 6 on the second roller chain 8 are in sliding contact with both the auxiliary slide rail 5 and the guide rail 4. The intersection point 9 of the line connecting the tangent point of the ball 6 on the first roller chain 7 to the guide rail 4 and the auxiliary slide rail 5 and the tangent point of the line connecting the ball 6 on the second roller chain 8 to the guide rail 4 and the auxiliary slide rail 5 is located on the outer side of the movable seat 2. The line connecting the two sides of the movable seat 2 forms an O-shaped structure. In this embodiment, the outer side of the movable seat 2 refers to the two sides away from the movable seat 2 and close to the inner walls of the two sides of the base 1. In actual use, the top of the movable seat 2 bears a component of a certain weight, so the base 1 will bear a large pressure, which can easily cause damage to the linear module during operation. The O-shaped structure of this embodiment can improve the torque resistance of the base 1, thereby improving the compressive strength of the linear module.

[0034] Furthermore, the O-shaped structure in this embodiment is an elliptical O-shaped structure, which can improve the ability of the base 1 to share the pressure of the movable seat 2, thereby extending the service life of the linear module in this embodiment.

[0035] like Figure 6 and Figure 7 As shown, in contrast, in the prior art, the intersection point 9 of the line connecting the tangent point of the ball 6 on the first roller chain 7 and the guide strip 4, and the tangent point of the line connecting the ball 6 on the second roller chain 8 and the auxiliary slide 5, is located inside the movable seat 2. Furthermore, the positions of the auxiliary slide 5 and the guide strip 4 are swapped, i.e., the auxiliary slide 5 is located in the embedded groove 3, and the guide strip 4 is located on both sides of the movable seat 2. The inside of the movable seat 2 refers to the inner walls close to the two sides of the movable seat 2 and away from the two sides of the base 1. The line connecting the intersection point 9 of the two sides of the movable seat 2 forms an X-shaped structure. The setting of the X-shaped structure is not conducive to the base 1 bearing the pressure generated by the components of the movable seat 2 bearing a certain weight, which leads to insufficient torque resistance of the base 1, thereby weakening the compressive strength of the linear module and shortening the service life of the linear module.

[0036] The auxiliary slide 5 has a first slide 10 and a second slide 11 arranged vertically parallel to each other on the side facing the guide rail 4 on the same side. The first slide 10 is close to the bottom of the base 1. The first slide 10 is slidably connected to the first roller chain 7, and the second slide 11 is slidably connected to the second roller chain 8. This arrangement ensures that the first roller chain 7 and the second roller chain 8 are distributed vertically parallel in the auxiliary slide 5, ensuring that the balls 6 on the first roller chain 7 and the balls 6 on the second roller chain 8 are always vertically parallel and that the balls 6 on the first roller chain 7 are parallel to the first slide 11. The ball 6 on the second roller chain 8 slides in contact with the second slide rail 11, and ensures that the ball 6 on the first roller chain 7 slides in contact with the lower surface of the guide rail 4 and the ball 6 on the second roller chain 8 slides in contact with the upper surface of the guide rail 4. This keeps the intersection point 9 of the line connecting the tangent point of the ball 6 on the first roller chain 7 and the guide rail 4 and the tangent point of the line connecting the ball 6 on the second roller chain 8 and the auxiliary slide rail 5 located outside the moving seat 2. The line connecting the intersection point 9 on both sides of the moving seat 2 forms an O-shaped structure, thereby enabling the linear module to maintain high torque resistance.

[0037] like Figure 2 As shown, the linear module in this embodiment also includes a front cover 12, a first bearing 13, a lead screw 14, a lead screw nut 15, a bearing pressure plate 18, a second bearing 16, and a fixed seat 17. The front cover 12 is located at the front end of the base 1. The front end of the lead screw 14 is connected to the front cover 12 through the first bearing 13, and the rear end of the lead screw 14 is connected to the fixed seat 17 through the second bearing 16. The lead screw 14 passes through the movable seat 2. The lead screw nut 15 is sleeved on the outer periphery of the lead screw 14 and fixedly connected to the front end of the movable seat 2. The second bearing 16 is fixed in the fixed seat 17 through the bearing pressure plate 18.

[0038] The lead screw 14 provides drive guidance for the movement of the movable seat 2 on the base 1. The arrangement of the first bearing 13, the lead screw 14, the lead screw nut 15, the bearing pressure plate 18, the second bearing 16 and the fixed seat 17, as well as the positional connection relationship between the components, are within the scope of the prior art, and therefore will not be described in detail here.

[0039] The rear end of the lead screw 14 passes through the fixed seat 17 and is fixedly connected to the rear end of the fixed seat 17 through the locking nut 19.

[0040] A retaining ring 20 is provided between the locking nut 19 and the fixed base 17, which can enhance the connection stability between the locking nut 19 and the fixed base 17.

[0041] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A linear module with high torque resistance, comprising a base (1) and a movable seat (2) sliding along the base (1), characterized in that, The inner walls on both sides of the base (1) are provided with guide strips (4) along their length. The movable seat (2) has auxiliary slides (5) extending along the length of the base (1) on both sides. A first roller chain (7) and a second roller chain (8) with a ring structure formed by several balls (6) are slidably connected to the auxiliary slides (5). The first roller chain (7) and the second roller chain (8) are arranged vertically parallel. The first roller chain (7) is close to the bottom of the base (1). The balls (6) on the first roller chain (7) all slide in contact with the auxiliary slide rail (5) and simultaneously slide in contact with the guide rail (4). The intersection point (9) of the line connecting the tangent point of the ball (6) on the first roller chain (7) with the guide rail (4) and the auxiliary slide rail (5) and the tangent point of the line connecting the ball (6) on the second roller chain (8) with the guide rail (4) and the auxiliary slide rail (5) is located on the outside of the movable seat (2). The line connecting the intersection point (9) on both sides of the movable seat (2) forms an O-shaped structure.

2. A linear module with high torque resistance according to claim 1, characterized in that, The upper surface of the guide strip (4) is slidably connected to the second roller chain (8), and the lower surface of the guide strip (4) is slidably connected to the first roller chain (7).

3. A linear module with high torque resistance according to claim 2, characterized in that, The guide strip (4) has an inverted K-shaped structure.

4. A linear module with high torque resistance according to claim 1, characterized in that, The inner walls on both sides of the base (1) are provided with embedded grooves (3) along their length direction, and the guide strip (4) is fixed in the embedded grooves (3) along the length direction of the base (1).

5. A linear module with high torque resistance according to claim 4, characterized in that, The auxiliary slide (5) has a first slide (10) and a second slide (11) arranged vertically and horizontally on the side facing the guide strip (4) on the same side as it. The first slide (10) is close to the bottom of the base (1).

6. A linear module with high torque resistance according to claim 5, characterized in that, The first slide rail (10) is slidably connected to the first roller chain (7), and the second slide rail (11) is slidably connected to the second roller chain (8).

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