CN201090699Y - Lead screw anti-dust device - Google Patents

Abstract

A lead screw dust-proof device, mainly composed of a fixed sealing shell (1) and an opening gap sealing connection assembly (2), in which a side plate (11), a bottom plate (12), an end support (13), and a joint The shaft seat (14) and the thin aluminum plate (15) are jointly connected to form a fixed sealed casing (1) with a movement gap A of a certain length. By the I-shaped connecting plate (23), the external component connecting plate (28), and pass through the aperture formed by the external component connecting plate (28) and the I-shaped connecting plate (23) arc surface (29), and press on the arc The strip steel on the surface (29) and the strip steel fixing plate (22) form the opening gap sealing connection assembly (2) to be used to realize the sealing of the opening gap. The utility model has the advantages of simple structure, long sealing life and easy maintenance and repair.

Description

Screw dustproof device

technical field

The utility model relates to a dust-proof sealing device, in particular to a dust-proof device for a robot transmission lead screw.

Background technique

At present, the lead screws widely used in robots generally require an external connection plate on the slider to connect the slider with other external motion devices. During the continuous operation of the lead screw, dust, smoke and other tiny solid particles in the external working environment will seriously affect the running accuracy and service life of the lead screw. Since the external connection plate will drive the external motion mechanism to continuously reciprocate, it is difficult to realize the sealing and dustproofing of the leading screw. The known dust-proof methods for the lead screw use the dust-proof lead screw sleeve to directly cover the outside of the lead screw to achieve dust prevention, and also use soft rubber sheets or thin iron sheets to wrap and seal the peripheral working space of the lead screw, but the above sealing effects are not not ideal. In particular, the high heat and high radiation generated in some special workplaces will burn the rubber screw dust cover or soft rubber sheet; and the non-stretchability of the thin iron sheet will inevitably increase the overall size of the robot, thereby increasing the robot's lifespan. The weight also greatly affects the overall appearance of the robot, and these shortcomings will greatly reduce the performance of the robot.

Therefore, in order to overcome the shortcomings of the existing lead screw sealing device, such as unsatisfactory sealing effect, short service life of the seal and affecting the overall appearance, it is necessary to develop a lead screw sealing device, which can not only effectively realize the dustproof isolation of the lead screw It is sealed, and the structure of the seal is compact, which can greatly prolong the service life of the lead screw in harsh working environments such as high temperature and high radiation.

Contents of the invention

According to the background technology, the purpose of this utility model is to provide a dust-proof sealing device for the lead screw, that is, the middle area of the upper surface of the I-shaped connecting plate connected by the moving slider is processed into a section of arc surface, and the end pressure on the arc surface is A slender steel strip, the two ends of the strip steel are fixed at the two ends of the entire sealing device; the remaining non-moving connection areas are sealed with thin aluminum plates, and both ends are fastened with screws. During the reciprocating movement of the external mechanism driven by the I-shaped connecting plate, the protruding part of the steel strip pressed on the upper surface of the arc of the I-shaped connecting plate changes accordingly with the movement of the slider. Because the rest of the surface of the entire sealing device except the strip steel is completely fixed and sealed, and the small bulge of the strip steel caused by the arc is due to the transition effect of the arc surface and the compression effect of the connecting cover plate and the strip steel pressure plate on the strip steel , It also plays a good role in sealing the internal lead screw, so that the whole device achieves the purpose of dust-proof sealing of the lead screw.

In order to achieve the above object, the utility model is achieved through the following technical solutions:

A lead screw dustproof device, mainly composed of a fixed sealing shell (1) and an opening gap sealing connection assembly (2), wherein: a lead screw (26) screwed with a lead screw nut (25) is supported by the lead screw Seat (27) and shaft coupling seat (14) are connected with base plate (12), and are connected with motion slider (24) on lead screw nut (25); Side plate (11) and base plate (12), and thin aluminum plate (15) is connected with the side plate (11), the end of the end support (13) and the shaft coupling seat (14) and is connected with each other to form a fixed sealed housing (1) with a certain length of motion gap A; by The I-shaped connecting plate (23), the external component connecting plate (28), the strip steel (21) and the strip steel fixing plate (22) form the opening gap sealing connection assembly (2), wherein the top of the I-shaped connecting plate (23) is moved Gap A is set on the outer surface of the thin aluminum plate (15), the top of the I-shaped connecting plate (23) supports the arc surface (29), and the top of the I-shaped connecting plate (23) is connected with an external member connecting plate (28 ), its lower end is connected with the moving slide block (24), and the strip steel (21) passes through the aperture formed by the arc surface (29) of the external component connecting plate (28) and the I-shaped connecting plate (23), and is pressed on On the circular arc surface (29), the band steel fixing plate (22), the end support (13) and the shaft coupling (14) are pressed and fixed to form a seal for the opening gap of the movement path, and the fixed sealing shell (1) and the opening gap sealing connection assembly (2) together form a screw dustproof device.

Due to the adoption of the above-mentioned technical scheme, the utility model has the following advantages and effects:

1. The position of the tiny bulge caused by the arc surface of the utility model changes with the movement of the I-shaped connecting plate, but the transition effect of the arc surface on the sealing surface and the restrictive effect of the strip pressure plate and the connecting cover plate, The entire dust-proof device achieves a good dust-proof isolation purpose while ensuring the effective movement of the mechanism.

2. The utility model has a simple and compact structure, can prolong the service life of the lead screw in harsh working environments such as high temperature and high radiation, and is easy to maintain and repair the structure.

Description of drawings

Fig. 1 is the overall cross-sectional schematic view of the structure of the utility model

Fig. 2 is a partial cross-sectional schematic diagram of the section of Fig. 1 of the utility model

Detailed ways

As shown in Figures 1 and 2, a lead screw dustproof device is mainly composed of a fixed sealed housing 1 and an opening gap sealing connection assembly 2, wherein: a lead screw 26 screwed with a lead screw nut 25 passes through the lead screw The supporting seat 27 and the coupling seat 14 are connected with the bottom plate 12, and the moving slider 24 is connected on the screw nut 25; the side plate 11 and the bottom plate 12, and the thin aluminum plate 15 and the side plate 11, the end support 13 and the shaft coupling The ends of the seat 14 are connected to each other to form a fixed sealed casing 1 with a certain length of movement gap A; the opening is composed of an I-shaped connecting plate 23, an external member connecting plate 28, a strip steel 21 and a strip steel fixing plate 22 The gap sealing connection assembly 2, wherein the top of the I-shaped connecting plate 23 is set on the outer surface of the thin aluminum plate 15 through the movement gap A, and the top of the I-shaped connecting plate 23 supports the arc surface 29, and is connected on the top of the I-shaped connecting plate 23 There is an external component connecting plate 28, the lower end of which is connected to the moving slider 24, and the strip steel 21 passes through the gap formed by the external component connecting plate 28 and the arc surface 29 of the I-shaped connecting plate 23, and is pressed on the arc surface 29 , through the strip steel fixing plate 22, the end support 13 and the coupling 14 are pressed and fixed to form a seal for the opening gap of the movement path, and the screw anti- dust device.

It is also known that the utility model divides the entire sealing surface into two parts: a fixed seal and a movement path opening gap seal. The fixed seal part is mainly fastened with a thin aluminum plate 15 to form a sealed shell with a gap on the top. The key It is the sealing of the opening gap of the movement path. It is in the process that the I-shaped connecting plate 23 drives the external component to reciprocate through the external component connecting plate 28, and the raised position of the strip steel pressed on the arc surface 29 of the I-shaped connecting plate 23 follows the With the movement of the moving slider 24, it is realized by making corresponding changes. This tiny bulge of the strip steel 21 is due to the transition effect of the arc surface 29 and the pressure of the external component connecting plate 28 and the strip steel fixing plate 22 on the strip steel 21. The tight effect makes it close to the sealed thin aluminum plate 15 to cover the movement gap, and realizes the sealing effect of the strip steel 21 dynamically.

Claims (1)

1. A lead screw dust-proof device, mainly composed of a fixed sealed housing (1) and an opening gap sealing connection assembly (2), characterized in that: the lead screw (26) equipped with a lead screw nut (25) passes through Leading screw support seat (27) and shaft coupling seat (14) are connected with base plate (12), are connected with motion slide block (24) on leading screw nut (25); Side plate (11) and base plate (12), And the thin aluminum plate (15) and the side plate (11), the end support (13) and the end of the coupling seat (14) are connected to each other to form a fixed sealed housing (1) with a certain length of motion gap A ; By the I-shaped connecting plate (23), the external component connecting plate (28), the strip steel (21) and the strip steel fixing plate (22) form the opening gap sealing connection assembly (2), wherein the I-shaped connecting plate (23) top Set on the outer surface of the thin aluminum plate (15) through the movement gap A, the top of the I-shaped connecting plate (23) supports the arc surface (29), and the top of the I-shaped connecting plate (23) is connected with an external component connecting plate (28), its lower end is connected to each other with motion slide block (24), and strip steel (21) passes through the aperture that the arc surface (29) of external member connecting plate (28) and I-shaped connecting plate (23) forms, and Pressed on the arc surface (29), fixed by the band steel fixing plate (22) and the end support (13) and the shaft coupling (14), the sealing to the opening gap of the movement path is formed.

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