Self-locking type linear sliding table
By designing the gap compensation mechanism and self-locking mechanism in the linear sliding table, the accuracy offset and insufficient braking force of the linear sliding table when transporting heavy materials is solved, and higher accuracy and stability are achieved.
Patent Information
- Application Number
- CN202510148812.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-11
- Publication Date
- 2025-04-01
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When existing linear sliders convey heavier materials, they may experience problems such as deviation in accuracy and insufficient braking force, which may cause abnormal movement of the workpiece when it is stopped.
A self-locking linear sliding table is designed, adopting a gap compensation mechanism and a self-locking mechanism. The gap compensation mechanism automatically compensates the screw gap through the gap adjustment ball to avoid deviation; the self-locking mechanism assists in braking through friction bottom plate and hydraulic spring rod to reduce the braking loss of the screw.
It effectively avoids movement deviation caused by the increase in the screw gap during use of the linear slide table, and reduces the burden on the screw by braking force through the self-locking mechanism, improving the overall accuracy and stability.
Smart Images
Figure CN119737383A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of slides, and in particular to a self-locking linear slide. Background Art
[0002] Linear slides, also known as linear modules, are automation upgrade units following linear guides, linear motion modules, and ball screw linear transmission mechanisms. The combination of various units can achieve linear and curved motion of loads, making automation of light loads more flexible and positioning more accurate.
[0003] When the existing linear slide is in use, it relies on a threaded screw for transmission, and it needs to ensure relatively high accuracy. When the threaded screw is used continuously, the threads between the threaded screws will slip, resulting in an increase in the gap between the threaded screws. This requires the existing linear slide to be tested for its movement accuracy after a relatively long period of use. However, during the test, the accuracy offset has already occurred. In addition, during use, although the linear slide has a certain self-locking function through the motor, the accuracy offset is less when conveying relatively light materials. However, when conveying relatively heavy materials, due to its heavy mass, the inertia generated when stopping is greater, which may cause the workpiece to move forward abnormally for a distance. Summary of the invention
[0004] The technical solution of the present invention aims at the technical problem that the existing technical solutions are too single, and provides a solution that is significantly different from the existing technologies. The embodiment of the present invention provides a self-locking linear slide to solve the technical problem that although the existing linear slide has a self-locking function, its lead screw may still be offset when moving relatively heavy materials after being worn.
[0005] The embodiment of the present invention adopts the following technical scheme: a self-locking linear slide, including a slide base, a linear screw is arranged on the slide base, a connecting seat is arranged on the linear screw, and also includes a gap compensation mechanism for compensating for the gap of the linear screw, including a self-locking mechanism for assisting the linear screw in locking, the self-locking mechanism includes a matching box, the matching box is arranged above the connecting seat, an extrusion block is arranged in the matching box, an installation groove is opened at the bottom of the connecting seat, and a friction base plate is arranged in the installation groove, a limiting block is arranged through the side of the connecting seat, a hydraulic spring rod is arranged between the limiting block and the connecting seat, and a connecting pipe is arranged between the hydraulic spring rod and the matching box.
[0006] Furthermore, the cross section of the friction bottom plate is T-shaped.
[0007] Furthermore, the friction base plate is in friction contact with the surface of the slide base, and the friction base plate is made of a high-friction material, such as polyurethane or rubber.
[0008] Furthermore, the limiting block has an L-shaped cross section, and the limiting block passes through the connecting seat to limit the friction base plate.
[0009] Furthermore, the gap compensation mechanism includes an installation sleeve, a connecting shell is arranged in the installation sleeve, an extrusion sleeve is arranged in the connecting shell, a gap adjustment ball is arranged on the extrusion sleeve, a storage liquid sleeve is arranged next to the gap adjustment ball, an elastic liquid outlet is arranged on the storage liquid sleeve, and an extrusion ring is arranged outside the gap adjustment ball.
[0010] Furthermore, the position of the elastic liquid outlet corresponds to the position of the gap adjustment ball, and the elastic liquid outlet is conical.
[0011] Furthermore, the extrusion sleeve is made of elastic material, and the extrusion sleeve is connected to the storage liquid sleeve.
[0012] Furthermore, the connection block base is provided with a movable protrusion block, the initial end of the slide base is provided with a matching groove, the movable protrusion block corresponds to the position of the extrusion ring, and the middle position of the installation sleeve is made of soft material.
[0013] Compared with the prior art, the beneficial effects of the present invention are: Firstly, by setting up a gap compensation mechanism, when the gap between the linear screws of the linear slide becomes larger during use, the gap adjustment ball set inside corresponds to the gap between the linear screws, and the gap adjustment ball will penetrate into the gap after the gap becomes larger, and the gap adjustment ball will gradually become larger from bottom to top. Therefore, when the gap between the linear screws becomes larger, the gap adjustment ball will penetrate more, causing the gap adjustment ball to always contact with the inner wall of the gap between the linear screws, so that the gap between the connecting seat and the linear screw is always kept in a state of mutual contact; Secondly, during the operation of the linear screw, the gap of the screw increases abnormally, which is often due to the increase in friction between the screw and the connecting seat. As the use continues, the lubricating oil in the screw and the connecting seat will be consumed, and the screw and the connecting seat will become hard contact, which will increase the wear of the screw. When the wear between the screw and the connecting seat increases through the gap compensation mechanism, the gap compensation mechanism automatically discharges oil, and then overflows through the gap adjustment ball. At this time, the gap adjustment ball is located in the slide groove of the screw, so as to achieve the effect of automatically replenishing the oil to the screw, avoiding the continuous increase of friction and the increase of wear of the screw. Thirdly, through the setting of the self-locking mechanism, when conveying an object with a relatively large mass, the object will generate a relatively large braking inertia after stopping, and the automatic inertia is used as the driving force to start the friction base plate. When inertia appears, it means that braking is performed at this time, and the friction base plate contacts the connecting seat, thereby playing an auxiliary braking effect, avoiding the braking force completely relying on the screw rod and the connecting seat, so that the screw rod thread groove needs to bear a relatively large force. To sum up, during the use of the linear slide, the self-locking mechanism can assist the linear slide and generate a relative force when a part of the linear slide is locked, thereby reducing the braking loss of the linear lead screw. At the same time, the internal clearance compensation mechanism can compensate for the gap when the thread groove gap of the linear lead screw increases, thereby avoiding the occurrence of movement deviation. At the same time, when the moving friction between the linear lead screw and the connecting seat increases, lubricating oil can be automatically added to the linear lead screw to ensure the friction coefficient between them. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the structure of the connecting seat of the present invention; Figure 3 It is a schematic diagram of the structure of the self-locking mechanism of the present invention; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of the structure of the gap compensation mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the gap adjustment ball of the present invention.
[0016] Reference numerals: 1. Slide base; 2. Linear screw; 3. Connecting seat; 4. Self-locking mechanism; 41. Matching box; 42. Extrusion block; 43. Connecting pipe; 44. Friction base plate; 45. Limiting block; 46. Hydraulic spring rod; 5. Clearance compensation mechanism; 51. Mounting sleeve; 52. Connecting shell; 53. Extrusion sleeve; 54. Storage liquid sleeve; 55. Elastic liquid outlet; 56. Clearance adjustment ball; 57. Extrusion ring. DETAILED DESCRIPTION
[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0018] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.
[0019] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.
[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.
[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0022] Combine the following Figures 1 to 6 As shown, an embodiment of the present invention provides a self-locking linear slide, including a slide base 1, a linear screw 2 is arranged on the slide base 1, a connecting seat 3 is arranged on the linear screw 2, and also includes a gap compensation mechanism 5 for compensating for the gap of the linear screw 2, including a self-locking mechanism 4 for assisting the linear screw 2 to be locked, the self-locking mechanism 4 includes a matching box 41, the matching box 41 is arranged above the connecting seat 3, an extrusion block 42 is arranged in the matching box 41, a mounting groove is opened at the bottom of the connecting seat 3, and a friction bottom plate 44 is arranged in the mounting groove, a limiting block 45 is arranged through the side of the connecting seat 3, a hydraulic spring rod 46 is arranged between the limiting block 45 and the connecting seat 3, and a connecting pipe 43 is arranged between the hydraulic spring rod 46 and the matching box 41.
[0023] During operation, the linear slide can assist the linear slide through the self-locking mechanism 4 to generate a relative force when a part of the linear slide is locked, thereby reducing the braking loss of the linear screw 2. At the same time, through the internally arranged gap compensation mechanism 5, when the gap of the thread groove of the linear screw 2 increases, the gap can be compensated to avoid the occurrence of movement deviation. At the same time, when the movement friction between the linear screw 2 and the connecting seat 3 increases, lubricating oil can be automatically added to the linear screw 2 to ensure the friction coefficient between them.
[0024] Specifically, the friction bottom plate 44 has a T-shaped cross section.
[0025] Specifically, the friction bottom plate 44 is in friction contact with the surface of the slide base 1 , and the friction bottom plate 44 is made of a high friction material, such as polyurethane or rubber.
[0026] During operation, it can play an auxiliary braking role, avoiding the braking being completely dependent on the linear lead screw 2.
[0027] Specifically, the limiting block 45 has an L-shaped cross section, and the limiting block 45 passes through the connecting seat 3 to limit the friction bottom plate 44 .
[0028] Specifically, the gap compensation mechanism 5 includes a mounting sleeve 51, a connecting shell 52 is arranged in the mounting sleeve 51, an extrusion sleeve 53 is arranged in the connecting shell 52, a gap adjustment ball 56 is arranged on the extrusion sleeve 53, a storage liquid sleeve 54 is arranged next to the gap adjustment ball 56, an elastic liquid outlet 55 is arranged on the storage liquid sleeve 54, and an extrusion ring 57 is arranged outside the gap adjustment ball 56.
[0029] Specifically, the position of the elastic liquid outlet 55 corresponds to the position of the gap adjustment ball 56 , and the elastic liquid outlet 55 is conical.
[0030] Specifically, the extrusion sleeve 53 is made of elastic material, and the extrusion sleeve 53 is connected to the storage liquid sleeve 54 .
[0031] Specifically, the connection block base is provided with a movable protrusion block, the initial end of the slide base 1 is provided with a matching groove, the movable protrusion block corresponds to the position of the extrusion ring 57, and the middle position of the installation sleeve 51 is made of soft material.
[0032] Working principle: When in use, first place the workpiece on the connecting seat 3, and then occasionally start the linear screw 2. When the position of the connecting seat 3 changes, the movable protrusion block provided at the bottom will be squeezed, and the movable protrusion block will move inward to squeeze the installation sleeve 51, and the installation sleeve 51 squeezes the liquid in the connecting shell 52, and the liquid squeezes the squeezing ring 57, and the squeezing ring 57 squeezes the gap adjustment ball 56. If the linear screw 2 has a gap wear, the gap adjustment ball 56 will move inward at this time. If the gap does not change, the connecting shell 52 will expand axially to ensure that the connecting shell 52 can be deformed after being squeezed. At this time, the gap adjustment ball 56 is Since it only fits with the inner wall of the gap of the linear screw 2, there is actually no gap between the gap adjustment ball 56 and the linear screw 2, avoiding gap offset and ensuring the stability of the movement of the linear screw 2 when it moves. However, with the movement of the connecting seat 3, the movement friction between the connecting seat 3 and the linear screw 2 may increase (due to the consumption of the lubricating oil inside it). At this time, the linear screw 2 needs to be automatically refilled with oil, otherwise it will be in a high friction state for a long time, which will aggravate the movement wear of the linear screw 2. When the movement resistance increases, the gap adjustment ball 56 will be subject to forward resistance, so that the gap adjustment ball 56 has a relative movement tendency (At this time, it can be understood that if the friction resistance is too large, although the connecting seat 3 is moving forward, the position of the gap adjustment ball 56 of the soft connection is relatively static) At this time, the gap adjustment ball 56 will squeeze the elastic liquid outlet 55 (although the elastic liquid outlet 55 is provided with a liquid outlet, the elastic liquid outlet 55 is contracted in the initial state, resulting in the liquid outlet not being opened), but at this time, the liquid outlet is squeezed by the gap adjustment ball 56, and the liquid outlet is opened, and the lubricating oil in the storage liquid sleeve 54 will overflow through the elastic liquid outlet 55, and then roll out through the gap adjustment ball 56, thereby smearing the lubricating oil on the inside of the linear screw 2. When braking is required At this time, there will be a certain inertia effect, the object squeezes the matching box 41, so that the squeezing block 42 in the matching box 41 squeezes the internal liquid, and then enters the hydraulic spring rod 46 through the connecting pipe 43, and the hydraulic spring rod 46 extends, thereby driving the limit block 45 to move, and the limit block 45 is separated from the limit on the friction bottom plate 44, and the friction bottom plate 44 contacts the surface of the slide base 1, thereby performing auxiliary friction braking, reducing the braking force required to be provided by the linear screw 2, and reducing braking loss. When resetting is required, the friction bottom plate 44 can be manually controlled. If the mass of the object is small, the inertia is relatively small at this time, so the friction bottom plate 44 will not be triggered; During the use of the linear slide, the self-locking mechanism 4 can assist the linear slide to generate a relative force when a part of the linear slide is locked, thereby reducing the braking loss of the linear screw 2. At the same time, the internally arranged clearance compensation mechanism 5 can compensate for the clearance when the thread groove clearance of the linear screw 2 increases, thereby avoiding the occurrence of movement deviation. At the same time, when the movement friction between the linear screw 2 and the connecting seat 3 increases, lubricating oil can be automatically added to the linear screw 2 to ensure the friction coefficient between them.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A self-locking linear slide, comprising a slide base (1), a linear screw (2) being arranged on the slide base (1), and a connecting seat (3) being arranged on the linear screw (2), characterized in that; It also includes a clearance compensation mechanism (5) for compensating the clearance of the linear screw (2), and a self-locking mechanism (4) for assisting the linear screw (2) in locking. The self-locking mechanism (4) includes a matching box (41), the matching box (41) is arranged above the connecting seat (3), an extrusion block (42) is arranged in the matching box (41), a mounting groove is opened at the bottom of the connecting seat (3), and a friction bottom plate (44) is arranged in the mounting groove, a limiting block (45) is arranged through the side of the connecting seat (3), a hydraulic spring rod (46) is arranged between the limiting block (45) and the connecting seat (3), and a connecting pipe (43) is arranged between the hydraulic spring rod (46) and the matching box (41).
2. A self-locking linear slide according to claim 1, characterized in that; The friction bottom plate (44) has a T-shaped cross section.
3. A self-locking linear slide according to claim 1, characterized in that; The friction base plate (44) is in friction contact with the surface of the slide base (1), and the friction base plate (44) is made of a high-friction material, such as polyurethane or rubber.
4. A self-locking linear slide according to claim 1, characterized in that; The limiting block (45) has an L-shaped cross section, and the limiting block (45) penetrates the connecting seat (3) to limit the friction base plate (44).
5. A self-locking linear slide according to claim 1, characterized in that; The clearance compensation mechanism (5) comprises a mounting sleeve (51), a connecting shell (52) is arranged inside the mounting sleeve (51), an extrusion sleeve (53) is arranged inside the connecting shell (52), a clearance adjustment ball (56) is arranged on the extrusion sleeve (53), a storage liquid sleeve (54) is arranged beside the clearance adjustment ball (56), an elastic liquid outlet (55) is arranged on the storage liquid sleeve (54), and an extrusion ring (57) is arranged outside the clearance adjustment ball (56).
6. A self-locking linear slide according to claim 5, characterized in that; The position of the elastic liquid outlet (55) corresponds to the position of the gap adjustment ball (56), and the elastic liquid outlet (55) is conical.
7. A self-locking linear slide according to claim 5, characterized in that; The extrusion sleeve (53) is made of an elastic material, and the extrusion sleeve (53) is connected to the storage liquid sleeve (54).
8. A self-locking linear slide according to claim 5, characterized in that; The connection block base is provided with a movable protrusion block, the initial end of the slide base (1) is provided with a matching groove, the movable protrusion block corresponds to the position of the extrusion ring (57), and the middle position of the installation sleeve (51) is made of soft material.