Dustproof ball screw

Abstract

The utility model provides a dustproof ball screw, and belongs to the technical field of machinery. The ball screw solves the problem that when an existing ball screw is used, dirt enters a nut in the process that the nut passes through the screw back and forth, and the service life of the ball screw is shortened. The dustproof ball screw comprises a ball threaded rod, a ball screw sleeve is arranged on the ball threaded rod, fixing blocks are arranged at the front end and the rear end of the ball screw sleeve respectively, a plurality of fixing rods are arranged on the fixing blocks, a plurality of positioning holes are formed in the ball screw sleeve, and a plurality of positioning assemblies are arranged on the fixing rods. And the positioning assembly is composed of a positioning piece and a connecting spring, a mounting groove is formed in the fixing rod, an opening for the ball threaded rod to penetrate through is formed in the fixing block, a fixing part is arranged on the fixing block in a protruding mode, and a dust removal block is fixedly arranged on the inner side wall of the fixing part. The ball screw has the advantage that the service life of the ball screw is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a ball screw, particularly a dustproof ball screw. Background Technology

[0002] A ball screw, also known as a ball screw or ball screw rod, consists of two matching parts: a screw and a nut. It is the most precise and commonly used transmission device in transmission machinery. In today's world, it can be said that all mechanical devices with various motion mechanisms have some form of motion transmission mechanism. The ball screw is the most reasonable product for converting rotary motion into linear motion, or linear motion into rotary motion.

[0003] However, when using current ball screws, if dirt falls onto the raceway of the screw, this dirt will enter the nut as the nut passes back and forth over the screw, affecting the fit between the balls inside the nut and the screw. This reduces the accuracy of the equipment, shortens the service life of the ball screw, and increases the economic losses incurred by companies due to repeated purchases of ball screws. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a dustproof ball screw that improves the service life of ball screws.

[0005] The objective of this utility model can be achieved through the following technical solution: A dustproof ball screw, comprising a ball thread rod, wherein a ball screw sleeve is provided on the ball thread rod, and the ball screw sleeve moves on the ball thread rod. The ball screw sleeve is characterized in that fixing blocks are respectively provided at its front and rear ends, and a plurality of fixing rods are provided on the fixing blocks. The ball screw sleeve has a plurality of positioning holes for the fixing rods to pass through. The fixing rods have a plurality of positioning components for positioning, each positioning component consisting of a positioning element and a connecting spring. The fixing rods have mounting grooves for installing the positioning components. One end of the positioning element extends out of the mounting groove and is used to fix the fixing block, while the other end of the positioning element extends into the mounting groove and is connected to the connecting spring. The fixing blocks have openings for the ball thread rods to pass through, and a fixing part protrudes from the fixing block. A dust removal block for dust removal of the ball thread rod is fixedly provided on the inner wall of the fixing part.

[0006] In the aforementioned dustproof ball screw, two fixing rods are provided.

[0007] In the aforementioned dustproof ball screw, the dust removal block is made of a soft material, and the dust removal block is provided with protrusions that match the threads on the ball screw.

[0008] In the aforementioned dustproof ball screw, a drive shaft is provided at each end of the ball thread rod.

[0009] Compared with existing technologies, this dustproof ball screw has a fixed block on the ball screw sleeve. When the ball screw sleeve moves back and forth, the dust removal cotton on the fixed block will remove the dust on the ball screw thread rod, which effectively improves the dustproof performance of the ball screw and can prevent dust or impurities from entering the ball screw sleeve and affecting the operation of the ball screw. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0012] In the figure, 1. Ball screw rod; 2. Ball screw sleeve; 3. Fixing block; 4. Fixing rod; 5. Positioning assembly; 6. Positioning component; 7. Connecting spring; 8. Mounting groove; 9. Dust removal block; 10. Drive shaft; 11. Fixing part. Detailed Implementation

[0013] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0014] like Figure 1 , Figure 2 As shown, this dustproof ball screw includes a ball threaded rod 1, on which a ball screw sleeve 2 is mounted, and the ball screw sleeve 2 moves on the ball threaded rod 1. Fixing blocks 3 are respectively provided at the front and rear ends of the ball screw sleeve 2. Several fixing rods 4 are provided on the fixing blocks 3. Several positioning holes are provided on the ball screw sleeve 2 for the fixing rods 4 to pass through. Several positioning components 5 are provided on the fixing rods 4 for positioning. The positioning components 5 consist of... The positioning component 6 and the connecting spring 7 are composed of a fixing rod 4 with an installation groove 8 for mounting the positioning component 5. One end of the positioning component 6 extends out of the installation groove 8 and is used to fix the fixing block 3. The other end of the positioning component 6 extends into the installation groove 8 and is connected to the connecting spring 7. The fixing block 3 has an opening for the ball thread rod 1 to pass through. The fixing block 3 has a protruding fixing part 11. A dust removal block 9 for dust removal of the ball thread rod 1 is fixedly installed on the inner side wall of the fixing part 11.

[0015] To elaborate further, when the ball screw sleeve 2 moves forward on the ball threaded rod 1, the dust removal block 9 set on the front fixing block 3 of the ball screw sleeve 2 will first clean the dust on the ball threaded rod 1, preventing dust from entering the interior of the ball screw sleeve 2, which greatly improves the service life of the ball screw.

[0016] To elaborate further, when it is necessary to remove the fixing block 3 from the ball screw sleeve 2, pressure is applied to the positioning part 6 to move it into the mounting groove 8. The return spring is compressed, and the fixing rod 4 is removed from the opening on the ball screw sleeve 2. The operator can then clean and replace the dust removal block 9 on the fixing block 3.

[0017] To elaborate further, there are two types of fixing rods 4.

[0018] To elaborate further, the dust removal block 9 is made of a soft material, and the dust removal block 9 is provided with protrusions that match the threads on the ball thread rod 1.

[0019] To elaborate further, each end of the ball thread rod 1 is provided with a drive shaft 10.

[0020] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0021] Although this document frequently uses terms such as ball screw rod 1, ball screw sleeve 2, fixing block 3, fixing rod 4, positioning assembly 5, positioning element 6, connecting spring 7, mounting groove 8, dust removal block 9, drive shaft 10, and fixing part 11, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A dustproof ball screw, comprising a ball threaded rod (1), wherein a ball screw sleeve (2) is provided on the ball threaded rod (1), and the ball screw sleeve (2) moves on the ball threaded rod (1), characterized in that, The ball screw sleeve (2) is provided with fixing blocks (3) at both ends. The fixing blocks (3) are provided with several fixing rods (4). The ball screw sleeve (2) is provided with several positioning holes for the fixing rods (4) to pass through. The fixing rods (4) are provided with several positioning components (5) for positioning. The positioning components (5) are composed of positioning parts (6) and connecting springs (7). The fixing rods (4) are provided with mounting grooves (8) for the positioning components (5) to be installed. One end of the positioning part (6) extends out of the mounting groove (8) and is used to fix the fixing blocks (3). The other end of the positioning part (6) extends into the mounting groove (8) and is connected to the connecting springs (7). The fixing blocks (3) are provided with openings for the ball screw rods (1) to pass through. The fixing blocks (3) are provided with a fixing part (11). The inner side wall of the fixing part (11) is fixedly provided with a dust removal block (9) for dust removal of the ball screw rods (1).

2. The dustproof ball screw according to claim 1, characterized in that, The fixing rod (4) is provided in two parts.

3. The dustproof ball screw according to claim 1, characterized in that, The dust removal block (9) is made of soft material and has protrusions that match the threads on the ball thread rod (1).

4. A dustproof ball screw according to claim 1, characterized in that, The ball thread rod (1) is provided with a drive shaft (10) at each end.

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