Long-stroke linear module and linear module equipment

Abstract

The utility model discloses a long-stroke linear module and linear module equipment. The long-stroke linear module comprises a base, a sliding table, a lead screw, a driving device, a sliding table supporting structure and a lead screw supporting structure. The sliding table is arranged in the base and used for moving in the length direction of the base. The lead screw is connected with the sliding table and is driven by the driving device; the sliding table supporting structure is fixed to the bottom face of the base and used for supporting the sliding table and guiding the sliding table to slide. The lead screw supporting structure comprises a driving air cylinder and a lead screw supporting seat, and the lead screw supporting seat is fixed to the end portion of the telescopic end of the driving air cylinder, is coaxial with the lead screw and is used for supporting the lead screw to prevent the lead screw from being bent. The sliding table is driven by the lead screw and the driving device to move along the base, the sliding table supporting structure provides sliding guidance, and the lead screw supporting structure adjusts the position of the lead screw supporting base through the driving air cylinder, dynamically supports the long-stroke lead screw and prevents the long-stroke lead screw from being bent due to self weight or load, long-stroke linear motion is achieved, and motion precision and stability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear module technical field, especially, relate to a long stroke linear module and linear module equipment. BACKGROUND

[0002] Linear module is a kind of linear motion mechanism widely used in automation equipment, and it realizes the accurate linear movement of load by screw, belt or guide rail transmission mode.In long stroke application, the traditional linear module faces the following problems:

[0003] Screw bending: due to the increase of screw length, self weight or load is easy to cause its bending, affect motion accuracy and service life.

[0004] Insufficient support: the existing support structure is mostly fixed, cannot dynamically adapt to long stroke demand, leading to unstable movement.

[0005] Friction resistance: sliding contact mode is easy to produce larger friction, reduce efficiency and increase wear.

[0006] In the prior art, although there are some solutions by increasing auxiliary support or strengthening screw rigidity, but there are the defects of complex structure, inconvenient adjustment or high cost.Therefore, a linear module capable of dynamically supporting screw, reducing friction and suitable for long stroke is needed to solve the above technical problems. SUMMARY

[0007] The utility model aims at at least one of the technical problems existing in the prior art is solved.For this purpose, the utility model provides a long stroke linear module and linear module equipment to realize the stable movement of sliding table.

[0008] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0009] In the first aspect, the utility model embodiment provides a long stroke linear module, which comprises a base, a sliding table, a screw, a driving device, a sliding table support structure and a screw support structure;The sliding table is arranged in the base and is used to move along the length direction of the base;The screw is connected with the sliding table and is driven by the driving device;The sliding table support structure is fixed to the bottom surface of the base and is used to support the sliding table and guide its sliding;The screw support structure comprises a driving cylinder and a screw support seat, the screw support seat is fixed to the telescopic end of the driving cylinder and is coaxially arranged with the screw, and is used to support the screw to avoid its bending.

[0010] Preferably, the sliding table support structure comprises two strip structures fixed to the bottom surface of the base, and a cross-shaped reinforcing rib is arranged inside.

[0011] Preferably, the screw rod support seat comprises a support seat body, a ball and a connecting portion; the connecting portion is used for connecting the driving cylinder, the support seat body is provided with a through hole, and the ball is axially embedded in the inner wall of the through hole and in contact with the surface of the screw rod.

[0012] Preferably, the ball is a plurality of balls which are uniformly distributed in the circumferential direction of the inner wall of the through hole.

[0013] Preferably, the driving cylinder is fixed to the bottom of the sliding table, and the extension direction of the driving cylinder is consistent with the axial direction of the screw rod.

[0014] Preferably, the base is a long strip-shaped frame structure, and the inner wall of the base is provided with a guide rail; the bottom of the sliding table is in sliding connection with the guide rail.

[0015] In the second aspect, the utility model discloses a linear module device, which comprises the long-stroke linear module as described in the first aspect.

[0016] The utility model has the advantages of the following:

[0017] The sliding table moves along the base under the driving of the screw rod and the driving device, the sliding table support structure provides sliding guide, the screw rod support structure adjusts the position of the screw rod support seat through the driving cylinder, dynamically supports the long-stroke screw rod, prevents the long-stroke screw rod from being bent due to self weight or load, realizes long-stroke linear motion, and improves motion precision and stability.

[0018] In addition to the objects, features and advantages described above, the utility model has other objects, features and advantages. The utility model will be further described below with reference to the drawings. DRAWINGS

[0019] The drawings that form a part of this application are intended to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0020] Fig. 1 is the top view of the long-stroke linear module in the utility model embodiment;

[0021] Fig. 2 is the structural schematic view of the screw rod support seat in the utility model embodiment.

[0022] Legend: 10, sliding table; 11, sliding table support structure; screw rod support structure; 20, driving cylinder; 21, screw rod support seat; 211, support seat body; 212, ball; 213 connecting portion; 30, screw rod; 40, base. DETAILED DESCRIPTION

[0023] It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0026] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0027] Please refer to Figs. 1-2 The long-stroke linear module provided by the embodiment of the present application comprises a base 40, a sliding table 10, a lead screw 30, a driving device, a sliding table support structure 11 and a lead screw support structure. The sliding table 10 is arranged in the base 40 and is used to move along the length direction of the base. The lead screw 30 is connected with the sliding table 10 and is driven by the driving device. The sliding table support structure 11 is fixed to the bottom surface of the base 40 and is used to support the sliding table 10 and guide the sliding of the sliding table 10. The lead screw support structure comprises a driving cylinder 20 and a lead screw support seat 21. The lead screw support seat 21 is fixed to the telescopic end of the driving cylinder 20 and is coaxially arranged with the lead screw 30, and is used to support the lead screw 30 to avoid the bending of the lead screw 30.

[0028] The sliding table 10 moves along the base 40 under the driving of the lead screw 30 and the driving device. The sliding table support structure 11 provides sliding guide. The lead screw support structure adjusts the position of the lead screw support seat 21 through the driving cylinder, dynamically supports the long-stroke lead screw 30, prevents the bending of the long-stroke lead screw 30 due to the self weight or load, realizes the long-stroke linear motion, and improves the motion precision and stability.

[0029] The slide support structure 11 includes two strip structures fixed to the bottom surface of the base 40, and a cross-shaped reinforcing rib is arranged inside. The strip structure provides rigid support, and the cross-shaped reinforcing rib enhances the structural strength, improves the rigidity and anti-deformation ability of the slide support structure 11, and ensures smooth sliding of the slide 10.

[0030] The screw rod support seat 21 includes a support seat body 211, a ball 212, and a connecting part 213. The connecting part 213 is used to connect the driving cylinder 20. The support seat body 211 is provided with a through hole. The ball 212 is axially embedded in the inner wall of the through hole and in contact with the surface of the screw rod 30.

[0031] The ball 212 is in rolling contact with the surface of the screw rod 30, reducing frictional resistance. This reduces the movement resistance of the screw rod 30, prolongs the service life, and improves the support stability.

[0032] There are multiple balls 212, which are uniformly distributed along the circumference of the inner wall of the through hole. The multiple balls evenly share the support force, further improving the uniformity and stability of the support of the screw rod 30.

[0033] The driving cylinder 20 is fixed to the bottom of the slide 10, and its extension direction is consistent with the axial direction of the screw rod 30. The driving cylinder 20 moves with the slide, dynamically adjusting the support position. This ensures that the support of the screw rod 30 is always in the best position, adapting to long-stroke requirements.

[0034] The base 40 is a long strip-shaped frame structure, and the inner wall thereof is provided with a guide rail. The bottom of the slide 10 is in sliding connection with the guide rail. The guide rail guides the linear motion of the slide. This enhances the motion guiding precision and reduces the deflection.

[0035] In summary, the slide 10 is arranged in the base 40 and is used to move along the length direction of the base. The slide 10 is driven by the screw rod 30 and the external driving device, so as to move;

[0036] The slide support structure 11 includes two strip structures fixed to the bottom surface of the base 40, and a cross-shaped reinforcing rib is arranged inside. The slide 10 is in sliding connection with the slide support structure 11.

[0037] The screw rod support structure includes the driving cylinder 20 and the screw rod support seat 21. The screw rod support seat 21 is fixed to the extension end of the driving cylinder 20. The driving cylinder 20 is fixed to the bottom of the slide 10. The screw rod support seat 21 is coaxially arranged with the screw rod 30. The screw rod support seat 21 includes the support seat body 211, the ball 212, and the connecting part 213. The connecting part 213 is used to connect the driving cylinder 20. The support seat body 211 is partially provided with a through hole. The ball 212 is axially embedded in the inner wall of the through hole and in contact with the surface of the screw rod 30, thereby supporting the screw rod 30 and avoiding bending caused by the excessive length of the screw rod. This is suitable for long-stroke linear modules.

[0038] The utility model discloses an embodiment further proposes a linear module equipment, including long -stroke linear module as first aspect.

[0039] The technical effect of the linear module equipment is same with the long -stroke linear module technical principle, so here is not superfluous repetition.

[0040] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and the utility model can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement etc. that is made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A long-stroke linear module, characterized in that, The system includes a base (40), a slide (10), a lead screw (30), a drive device, a slide support structure (11), and a lead screw support structure. The slide (10) is located inside the base (40) and is used to move along the length of the base. The lead screw (30) is connected to the slide (10) and is driven by the drive device. The slide support structure (11) is fixed to the bottom surface of the base (40) and is used to support the slide (10) and guide its sliding. The lead screw support structure includes a drive cylinder (20) and a lead screw support seat (21). The lead screw support seat (21) is fixed to the telescopic end of the drive cylinder (20) and is coaxially arranged with the lead screw (30) to support the lead screw (30) to prevent it from bending.

2. The long-stroke linear module according to claim 1, characterized in that, The slide support structure (11) includes two strip structures that are fixed to the bottom surface of the base (40) and are provided with cross-shaped reinforcing ribs inside.

3. The long-stroke linear module according to claim 1, characterized in that, The lead screw support (21) includes a support body (211), a ball (212) and a connecting part (213); the connecting part (213) is used to connect the drive cylinder (20), the support body (211) is provided with a through hole, and the ball (212) is axially embedded in the inner wall of the through hole and in contact with the surface of the lead screw (30).

4. The long-stroke linear module according to claim 3, characterized in that, The ball bearings (212) are multiple and are evenly distributed along the circumferential direction of the inner wall of the through hole.

5. The long-stroke linear module according to claim 1, characterized in that, The drive cylinder (20) is fixed to the bottom of the slide (10), and its extension and retraction direction is consistent with the axial direction of the lead screw (30).

6. The long-stroke linear module according to claim 1, characterized in that, The base (40) is a long strip frame structure with guide rails on its inner wall, and the bottom of the slide (10) is slidably connected to the guide rails.

7. A linear module device, characterized in that, Includes the long-stroke linear module as described in any one of claims 1-6.

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