Double-layer sealing structure of transverse moving device

Abstract

The double-layer sealing structure of the transverse moving device comprises a fixed base, a ball screw and a linear guide rail are installed in the fixed base, a servo motor is fixed to the fixed base through a motor connecting plate, a sliding table assembly is arranged on the fixed base, and a protective steel belt penetrates through the two ends of the sliding table assembly to be fixed to the fixed base; the two sides of the sliding table assembly are connected with special-shaped sliding plates. The lower portion of the sliding table assembly is fixedly connected with a ball screw. The outer protective cover covers the whole conveying device through U-shaped grooves in the two sides of the special-shaped sliding plate and is fixedly connected with the fixed base. The ventilation connectors are arranged at the two ends of the fixed base and provided with gas pipe connectors and used for introducing pressurized gas into the fixed base. The sliding table assembly has the advantages that the sliding table assembly cooperates with the protection steel belt, the special-shaped sliding plate and the outer protection cover to form double-layer sealing, and dust and impurities are effectively isolated; the ventilation interface enhances the airtightness, the lubricating oil nozzle is convenient to maintain, the airtightness and the operation stability are integrally improved, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the field of mechanical manufacturing, in particular to an automatic conveying device. Background Art

[0002] In modern manufacturing, especially in CNC machine tools, machining centers, and other machining equipment, automated conveying devices must operate for extended periods in harsh environments subject to high humidity and strong coolant splash. Core moving components of these devices, such as ball screws and linear guides, are extremely sensitive to contaminants. Intrusion of coolant or metal debris can lead to increased wear, loss of precision, and even system failure.

[0003] Traditional conveying devices generally have the following inherent defects:

[0004] During dynamic movement, a micro gap is generated between the steel belt and the slide, and water vapor penetrates through the gap to corrode the lead screw and guide rail.

[0005] The exposed steel belt is easily deformed or broken in unexpected situations such as workpiece dropping and tool collision, causing the sealing function to fail instantly. In addition, the steel belt needs to be removed for lubrication, resulting in long downtime.

[0006] The protective cover interferes with the moving parts, making it difficult to achieve full coverage and sealing. Although some improvement plans have tried to add an external protective cover, the fundamental contradiction has not been resolved;

[0007] Therefore, there is an urgent need for a new sealing structure that combines dynamic sealing reliability, impact protection and convenient maintenance to meet the stringent requirements of high-end manufacturing equipment for long-life and maintenance-free conveying devices. Summary of the Invention

[0008] In order to solve the above problems, the present invention discloses a double-layer sealing structure of a transverse movement device.

[0009] The specific technical solutions are as follows:

[0010] A double-layer sealing structure of a transverse movement device, comprising:

[0011] A fixed base is provided, and a ball screw and a linear guide are installed inside the fixed base. The servo motor is fixed to the fixed base through a motor connecting plate. A slide assembly is provided on the fixed base, and a protective steel belt passes through both ends of the slide assembly and is fixed to the fixed base; both sides of the slide assembly are connected to special-shaped slides, and the bottom of the slide assembly is fixedly connected to the ball screw; the outer protective cover covers the entire conveying device through the U-shaped grooves on both sides of the special-shaped slide, and is fixedly connected to the fixed base; the ventilation interface is provided at both ends of the fixed base, and is equipped with an air pipe joint for introducing pressurized gas into the interior of the fixed base; the lubricating oil nozzle is provided on the side of the special-shaped slide.

[0012] The slide assembly includes a slide side plate connected to the special-shaped skateboard bolts, and the bottom of the two slide side plates are jointly bolted to the slide upper plate. The slide upper plate is placed above the ball screw in a plate shape and is connected to the ball screw. The outer shell covers the outside of the slide upper plate, and rollers are provided in front and behind the slide upper plate. Roller brackets are also connected at both ends of the slide upper plate. A secondary wheel is provided inside the roller bracket. The protective steel belt starts from the starting end of the fixed base and extends to the bottom of the secondary wheel, then bends to cover the top of the roller, and extends to the secondary wheel on the other side again, and then cooperates with the magnetic strip to cover the fixed base as a whole.

[0013] The slide assembly, magnetic strip, fixed base and protective steel belt are assembled together to form a primary seal.

[0014] The overall shape of the outer protective cover complements that of the fixed base, and the outer protective cover is a four-sided three-dimensional structure. An end cover is provided at the end to buckle with the end of the fixed base. The outer protective cover and the fixed base together form a secondary seal.

[0015] The lubricating oil nozzle is embedded in the side surface of the special-shaped slide plate and extends through the slide side plate and the slide upper plate to the ball screw and the linear guide rail to form a lubrication channel.

[0016] The special-shaped slide plate is provided with a convex edge on the outer side of the outer protective cover, and the convex edge is provided with a screw hole.

[0017] The advantages of the present invention are:

[0018] The ball screw and linear guide in the fixed base are combined with the servo motor to achieve precise and smooth operation of the transverse movement device; the coordinated design of the slide assembly, protective steel belt, special-shaped slide plate and outer protective cover constructs a double-layer sealing protection to effectively isolate dust and impurities; the ventilation interface can be connected to pressurized gas to enhance the seal, and the lubrication nozzle facilitates lubrication and maintenance. The overall structure improves the sealing, operational stability and service life of the device, and is easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure after removing the rear outer protective cover;

[0021] Figure 3 Schematic diagram of the structure of the slide assembly;

[0022] Figure 4 It is the front view of the present invention;

[0023] Figure 5 It is a schematic diagram of the half-section structure of the present invention. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] A double-layer sealing structure of a transverse movement device, comprising:

[0026] A fixed base 1 is provided, and a ball screw 9 and a linear guide 10 are installed inside the fixed base 1. The servo motor 5 is fixed to the fixed base 1 through the motor connecting plate 4. A slide assembly 11 is provided on the fixed base 1, and the protective steel belt 2 passes through both ends of the slide assembly 11 and is fixed to the fixed base 1; the two sides of the slide assembly 11 are connected to the special-shaped skateboard 3, and the bottom of the slide assembly 11 is fixedly connected to the ball screw 9; the outer protective cover 7 covers the entire conveying device through the U-shaped grooves on both sides of the special-shaped skateboard 3, and is fixedly connected to the fixed base 1; the ventilation interface is provided at both ends of the fixed base 1, and is installed with an air pipe joint 6 for introducing pressurized gas into the interior of the fixed base 1; the lubricating oil nozzle 8 is provided on the side of the special-shaped skateboard 3.

[0027] The slide assembly 11 includes a slide side plate 11a bolted to the special-shaped slide plate 3, and the bottom of the two slide side plates 11a are bolted to the slide upper plate 11b. The slide upper plate 11b is placed above the ball screw 9 in a plate shape and is connected to the ball screw. The outer shell 11f covers the outside of the slide upper plate 11b, and rollers 11c are provided in front and behind the slide upper plate 11b. Roller brackets 11d are also connected at both ends of the slide upper plate 11b. A secondary wheel 11e is provided inside the roller bracket 11d. The protective steel belt 2 starts from the starting end of the fixed base 1 and extends to the bottom of the secondary wheel 11e, then bends to cover the top of the roller 11b, and extends to the secondary wheel 11e on the other side again, and then cooperates with the magnetic strip to cover the fixed base 1 as a whole.

[0028] The slide assembly 11, the magnetic strip, the fixed base 1, and the protective steel belt 2 are assembled together to form a primary seal.

[0029] The overall shape of the outer protective cover 7 is complementary to that of the fixed base 1 , and the outer protective cover 7 is a four-sided three-dimensional structure, with an end cover at the end thereof buckled with the end of the fixed base 1 , and the outer protective cover 7 and the fixed base 1 together form a secondary seal.

[0030] The lubricating oil nozzle 8 is embedded in the side surface of the special-shaped slide 3 and extends through the slide side plate and the slide upper plate to the ball screw 9 and the linear guide rail 10 to form a lubrication channel.

[0031] The special-shaped slide plate 3 is provided with a convex edge on the outer side of the outer protective cover 7, and the convex edge is provided with a screw hole, which can be connected to various carrying platforms for transportation.

[0032] The working principle of the present invention is to achieve long-term sealing of the conveying device in harsh environments through a dual-stage linkage of physical barrier sealing and active air pressure anti-seepage. The specific working process is as follows;

[0033] Primary sealing: The two ends of the protective steel belt 2 are fixed to the fixed base 1, and the middle part is guided by the slide assembly to form a multiple bending path (slide side plate → below the auxiliary wheel → above the roller → opposite auxiliary wheel); after the protective steel belt is bent, it is tightly adsorbed to the upper surface of the fixed base 1 through the magnetic strip to form a top closed cavity.

[0034] When the servo motor 5 drives the ball screw 9, the slide assembly 11 drives the special-shaped slide plate 3 to move, and the protective steel belt 2 slides between the auxiliary wheel 11e and the roller 11c, maintaining the dynamic sealing continuity of the cavity. At this time, the air pipe joint 6 introduces compressed air into the fixed base 1, creating a positive pressure environment in the cavity; the positive pressure gas continuously overflows from the edge of the protective steel belt 2, the gap between the U-shaped grooves of the special-shaped slide plate 3, and other micro-gaps, blocking the intrusion of external coolant;

[0035] Secondary sealing: The outer protective cover 7 covers the entire device through the U-shaped groove of the special-shaped slide 3, and its end cover is buckled with the fixed base 1 to form a second static sealing barrier. The end cover of the outer protective cover 7 is detachable to facilitate the inspection of the air pressure sealing system and other faults.

Claims

1. A double-layer sealing structure of a transverse movement device, characterized in that: include: A fixed base (1) is provided, wherein a ball screw (9) and a linear guide rail (10) are installed inside the fixed base (1), a servo motor (5) is fixed to the fixed base (1) through a motor connecting plate (4), a slide assembly (11) is provided on the fixed base (1), and a protective steel belt (2) passes through both ends of the slide assembly (11) and is fixed to the fixed base (1); both sides of the slide assembly (11) are connected to the special-shaped slide plate (3), and the bottom of the slide assembly (11) is fixedly connected to the ball screw (9); an outer protective cover (7) covers the entire conveying device through the U-shaped grooves on both sides of the special-shaped slide plate (3) and is fixedly connected to the fixed base (1); a ventilation interface is provided at both ends of the fixed base (1) and is provided with an air pipe joint (6) for introducing pressurized gas into the interior of the fixed base (1); a lubricating oil nozzle (8) is provided on the side of the special-shaped slide plate (3).

2. The double-layer sealing structure of the traverse device according to claim 1 is characterized in that: The slide assembly (11) includes a slide side plate (11a) bolted to the special-shaped slide plate (3), the bottom of the two slide side plates (11a) are bolted to the slide upper plate (11b), the slide upper plate (11b) is placed above the ball screw (9) in a plate shape and connected to the ball screw (9), the outer shell (11f) covers the outside of the slide upper plate (11b), rollers (11c) are provided at the front and rear of the slide upper plate (11b), roller brackets (11d) are also connected at both ends of the slide upper plate (11b), and a secondary wheel (11e) is provided inside the roller bracket (11d), and the protective steel belt (2) starts from the starting end of the fixed base (1) and extends to the bottom of the secondary wheel (11e), then bends to cover the top of the roller (11b), and then extends to the secondary wheel (11e) on the other side and the whole cooperates with the magnetic strip to cover the fixed base (1).

3. The double-layer sealing structure of the traverse device according to claim 1 is characterized in that: The slide assembly (11), the magnetic strip, the fixed base (1), and the protective steel belt (2) are assembled together to form a primary seal.

4. The double-layer sealing structure of the traverse device according to claim 1 is characterized in that: The overall shape of the outer protective cover (7) is complementary to the overall shape of the fixed base (1), and the outer protective cover (7) is a four-sided three-dimensional structure, with an end cover provided at the end thereof to be buckled with the end of the fixed base (1), and the outer protective cover (7) and the fixed base (1) together form a secondary seal.

5. The double-layer sealing structure of the traverse device according to claim 1 is characterized in that: The lubricating oil nozzle (8) is embedded in the side of the special-shaped slide (3) and extends through the slide side plate and the slide upper plate to form a lubrication channel on the ball screw (9) and the linear guide rail (10).

6. The double-layer sealing structure of the transverse movement device according to claim 1 is characterized in that: The special-shaped slide plate (3) is provided with a convex edge on the outer side of the outer protective cover (7), and the convex edge is provided with a screw hole.

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