Lead screw with positioning structure for linear module and linear module

Abstract

The utility model relates to the technical field of linear transmission, in particular to a lead screw with a positioning structure for a linear module and the linear module, which comprise a lead screw body, a first rotary fixing block, a second rotary fixing block, a transmission nut and a rotary positioning block, the lead screw body comprises a driving connecting end, a first rotary connecting end, a threaded end, a second rotary connecting end and a positioning connecting end which are arranged in sequence, the first rotary connecting end is rotatably connected to the first rotary fixing block, the second rotary connecting end is rotatably connected to the second rotary fixing block, and the transmission nut is arranged on the threaded end; the threaded end can rotate and slide along with threads of the threaded end; and the rotary positioning block is fixedly arranged on the positioning connecting end and is provided with a positioning part for rotationally positioning the screw rod body. The screw rod body is rotationally positioned through the positioning part. By means of the flexible positioning mode, rotation of the lead screw body can be stopped after the lead screw body is transmitted to a designated position, and precision is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of linear transmission, in particular to a screw rod with a positioning structure for a linear module and the linear module. Background Art

[0002] The linear transmission module is a linear transmission device, which mainly has several forms, one is composed of ball screw and linear guide, the other is composed of synchronous belt and synchronous pulley, and also includes linear motor and other modules. It has the advantages of high-speed transmission, high reliability, strong flexibility, easy installation and maintenance, and support for multiple applications. It has a wide range of uses, easy installation, and high precision. It is a general term for devices that can achieve linear motion in the field of automation industry.

[0003] The existing screw drive module uses the thread groove on the screw to cooperate with the nut for linear transmission. In the existing screw drive process, positioning is performed after the motor stops rotating. However, it is difficult to control the motor after it stops rotating in some vibration environments, which may cause displacement after the motor stops rotating. Therefore, a new design is needed for the existing screw positioning. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a method of rotating and positioning the screw body through a positioning part. This flexible positioning method can stop the screw body from rotating after being transmitted to a specified position, thereby ensuring the accuracy of the linear module with a screw and a linear module having a positioning structure.

[0005] The technical solution adopted by the utility model is: a screw with a positioning structure for a linear module, including a screw body, a first rotating fixed block, a second rotating fixed block, a transmission nut and a rotating positioning block, the screw body includes a driving connection end, a first rotating connection end, a threaded end, a second rotating connection end and a positioning connection end which are arranged in sequence, the first rotating connection end can be rotatably connected to the first rotating fixed block, the second rotating connection end can be rotatably connected to the second rotating fixed block, the transmission nut is arranged on the threaded end, and can rotate and slide following the thread of the threaded end; the rotating positioning block is fixedly arranged on the positioning connection end, and the rotating positioning block is provided with a positioning portion to rotationally position the screw body.

[0006] A further improvement to the above solution is that a fixed connection end is provided between the driving connection end and the first rotating connection end, and the fixed connection end is provided with a threaded outer diameter.

[0007] A further improvement to the above solution is that the outer diameter of the driving connection end is smaller than the outer diameter of the first rotating connection end, and the outer diameter of the threaded end is larger than the outer diameter of the first rotating connection end.

[0008] A further improvement to the above scheme is that the positioning connection end is provided with a fixed position, the rotating positioning block is provided with a connecting sleeve, the connecting sleeve is provided with a matching position, the matching position is provided with a fixing hole, and a mechanical screw is provided in the fixing hole for locking and fixing it in the fixed position.

[0009] A further improvement to the above solution is that a thread groove is provided on the outer periphery of the thread end, and the thread groove is an arc-shaped groove.

[0010] A further improvement to the above solution is that the first rotating fixed block is provided with a first rotating placement cavity, a first bearing is installed in the first rotating placement cavity, and the first rotating connection end is rotatably connected to the first bearing.

[0011] A further improvement to the above solution is that the second rotating fixed block is provided with a second rotating placement cavity, a second bearing is installed in the second rotating placement cavity, and the second rotating connection end is rotatably connected to the second bearing.

[0012] A further improvement to the above solution is that the rotation positioning block is provided with a rotation positioning disk, and the positioning portion is provided on the rotation positioning disk.

[0013] A further improvement to the above solution is that the positioning portion includes a plurality of positioning holes circumferentially arranged on the rotating positioning disk, and chamfers are arranged at the openings of the positioning holes.

[0014] A linear module comprises a screw rod with a positioning structure for the linear module.

[0015] The beneficial effects of the utility model are:

[0016] Compared with the screw structure of the existing linear module, the utility model can realize the precise rotation and positioning of the screw body through the threaded transmission mechanism of the screw and the sliding of the transmission nut. The positioning part of the rotating positioning block cooperates with the screw body to ensure the accuracy and stability of the positioning. The first rotating fixed block and the second rotating fixed block are connected to the rotating connection end of the screw body to form a reliable rigid connection. This connection method can withstand large forces and torques, and ensure the stability and reliability of the entire system. The transmission nut rotates and slides with the thread of the screw body to achieve a smooth movement process. This design reduces friction and vibration, and improves the operation stability and processing quality of the module. The rotating positioning block is fixed on the positioning connection end, and the screw body is rotated and positioned by the positioning part. This flexible positioning method can stop the screw body from rotating after it is transmitted to the specified position, ensuring accuracy. Specifically, it is necessary to adapt the positioning element to cooperate with the positioning part to stop the positioning of the screw body, and the positioning effect is good. The screw body is sequentially provided with a driving connection end, a first rotating connection end, a threaded end, a second rotating connection end and a positioning connection end, which simplifies the structural design of the module. This compact structural design is convenient for installation and maintenance. The module has high-precision positioning capability through the positioning structure of the lead screw. It can achieve small transmission and rear stop, meeting the application scenarios with high precision requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a screw rod with a positioning structure for a linear module of the utility model;

[0018] Figure 2 for Figure 1 A three-dimensional schematic diagram of another perspective of the screw rod with a positioning structure for the linear module;

[0019] Figure 3 for Figure 1 A three-dimensional schematic diagram of another perspective of the lead screw with a positioning structure for the linear module.

[0020] Explanation of the accompanying drawings: screw body 1, drive connection end 11, fixed connection end 111, first rotation connection end 12, threaded end 13, threaded groove 131, second rotation connection end 14, positioning connection end 15, fixed level 151, first rotation fixing block 2, first rotation placement cavity 21, first bearing 22, second rotation fixing block 3, second rotation placement cavity 31, second bearing 32, transmission nut 4, rotation positioning block 5, positioning portion 51, positioning hole 511, connecting sleeve 52, matching level 521, fixing hole 522, rotation positioning disk 53. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0024] like Figure 1 to Figure 3As shown, in one embodiment of the utility model, a screw with a positioning structure for a linear module is involved, including a screw body 1, a first rotating fixed block 2, a second rotating fixed block 3, a transmission nut 4 and a rotating positioning block 5, the screw body 1 includes a driving connection end 11, a first rotating connection end 12, a threaded end 13, a second rotating connection end 14 and a positioning connection end 15 arranged in sequence, the first rotating connection end 12 can be rotatably connected to the first rotating fixed block 2, the second rotating connection end 14 can be rotatably connected to the second rotating fixed block 3, the transmission nut 4 is arranged on the threaded end 13, and can follow the thread rotation and sliding of the threaded end 13; the rotating positioning block 5 is fixedly arranged on the positioning connection end 15, and the rotating positioning block 5 is provided with a positioning portion 51 to rotate and position the screw body 1. This embodiment can realize the precise rotation and positioning of the screw body 1 through the threaded transmission mechanism of the screw and the sliding of the transmission nut 4. The positioning portion 51 of the rotating positioning block 5 cooperates with the screw body 1 to ensure the accuracy and stability of positioning. The first rotating fixed block 2 and the second rotating fixed block 3 are connected to the rotating connection end of the screw body 1 to form a reliable rigid connection. This connection method can withstand large forces and torques, ensuring the stability and reliability of the entire system. The transmission nut 4 rotates and slides along the thread of the screw body 1 to achieve a smooth movement process. This design reduces friction and vibration, and improves the operation stability and processing quality of the module. The rotating positioning block 5 is fixed on the positioning connection end 15, and the screw body 1 is rotated and positioned by the positioning part 51. This flexible positioning method can stop the screw body 1 after transmission to the specified position to ensure accuracy. Specifically, it is necessary to adapt the positioning element to cooperate with the positioning part 51 to stop the screw body 1, and the positioning effect is good. The screw body 1 is sequentially provided with a driving connection end 11, a first rotating connection end 12, a threaded end 13, a second rotating connection end 14 and a positioning connection end 15, which simplifies the structural design of the module. This compact structural design is convenient for installation and maintenance. Through the positioning structure of the screw, the module has high-precision positioning capability. It can achieve a small transmission and then stop, meeting the application scenario with high precision requirements.

[0025] A fixed connection end 111 is provided between the driving connection end 11 and the first rotating connection end 12, and the fixed connection end 111 is provided with a threaded outer diameter. In this embodiment, the fixed connection end 111 is used to fix the first rotating connection end 12 on the first fixing block, and the threaded outer diameter can be matched with a nut for fixed connection.

[0026] The outer diameter of the driving connection end 11 is smaller than that of the first rotating connection end 12, and the outer diameter of the threaded end 13 is larger than that of the first rotating connection end 12. In this embodiment, the outer diameter size is designed to facilitate installation and provide better stability during transmission.

[0027] The positioning connection end 15 is provided with a fixed level 151, and the rotation positioning block 5 is provided with a connecting sleeve 52, and the connecting sleeve 52 is provided with a matching level 521, and the matching level 521 is provided with a fixing hole 522, and a machine screw is provided in the fixing hole 522 for locking and fixing in the fixed level 151. In this embodiment, the rotation positioning block 5 is firmly fixedly connected to the positioning connection end 15 by the matching design of the fixed level 151 and the connecting sleeve 52. The machine screw in the fixing hole 522 further strengthens the connection, ensuring the stability and reliability of the module. Through the locking action of the machine screw, the rotation positioning block 5 can be accurately fixed in the desired position. This position locking can ensure that the module does not shift or loosen during operation, and ensure the accuracy and stability of processing.

[0028] The outer periphery of the threaded end 13 is provided with a thread groove 131, and the thread groove 131 is an arcuate groove. In this embodiment, the design of the arcuate thread groove 131 can make the transmission nut 4 rotate smoothly on the screw rod, reducing the friction and vibration during transmission. Such a design can improve the movement stability of the screw rod, making the module more stable and reliable during operation. The shape of the arcuate thread groove 131 helps to reduce noise and vibration during transmission. Compared with the traditional straight thread groove 131, the arcuate groove can better disperse and absorb vibration energy, making the module run more smoothly and reducing the generation of noise.

[0029] The first rotating fixed block 2 is provided with a first rotating placement cavity 21, in which a first bearing 22 is installed, and the first rotating connection end 12 is rotatably connected to the first bearing 22. Specifically, the second rotating fixed block 3 is provided with a second rotating placement cavity 31, in which a second bearing 32 is installed, and the second rotating connection end 14 is rotatably connected to the second bearing 32. In this embodiment, the first rotating connection end 12 is connected to the first rotating fixed block 2 through the first bearing 22, and the second rotating connection end 14 is connected to the second rotating fixed block 3 through the second bearing 32. Such a design can realize the smooth rotation movement of the module, reduce friction and vibration, and improve the stability and reliability of the system. The first bearing 22 and the second bearing 32 play a supporting and guiding role during the rotation process. They can withstand rotational force and torque, ensure the stable operation of the module, and ensure the accurate positioning of the rotating connection end, thereby improving the positioning accuracy of the module.

[0030] The rotation positioning block 5 is provided with a rotation positioning disk 53, and the positioning portion 51 is provided on the rotation positioning disk 53. Specifically, the positioning portion 51 includes a plurality of positioning holes 511 circumferentially arranged on the rotation positioning disk 53, and the openings of the positioning holes 511 are provided with chamfers. In this embodiment, by providing a plurality of positioning holes 511 on the rotation positioning disk 53, accurate positioning of the screw body 1 at different rotation angles can be achieved. These positioning holes 511 can be used to cooperate with the positioning pins to insert and position, and after positioning, the screw body 1 remains stationary and cannot rotate anymore, thereby ensuring accurate positioning of the module.

[0031] A linear module includes a screw with a positioning structure for the linear module. The screw body 1 has a positioning and anti-rotation function to ensure transmission stability and positioning accuracy. It avoids displacement after the module transmission stops, and is particularly suitable for use in lifting load-bearing modules.

[0032] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A screw rod with a positioning structure for a linear module, characterized in that: It includes a screw body, a first rotating fixed block, a second rotating fixed block, a transmission nut and a rotating positioning block. The screw body includes a driving connection end, a first rotating connection end, a threaded end, a second rotating connection end and a positioning connection end which are arranged in sequence. The first rotating connection end can be rotatably connected to the first rotating fixed block, and the second rotating connection end can be rotatably connected to the second rotating fixed block. The transmission nut is arranged on the threaded end and can rotate and slide following the thread of the threaded end; the rotating positioning block is fixedly arranged on the positioning connection end, and the rotating positioning block is provided with a positioning portion to rotationally position the screw body.

2. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: A fixed connection end is arranged between the driving connection end and the first rotating connection end, and the fixed connection end is provided with a threaded outer diameter.

3. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: The outer diameter of the driving connection end is smaller than the outer diameter of the first rotating connection end, and the outer diameter of the threaded end is larger than the outer diameter of the first rotating connection end.

4. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: The positioning connection end is provided with a fixed position, the rotating positioning block is provided with a connecting sleeve, the connecting sleeve is provided with a matching position, the matching position is provided with a fixing hole, and a mechanical screw is provided in the fixing hole for locking and fixing in the fixed position.

5. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: The outer periphery of the threaded end is provided with a thread groove, and the thread groove is an arc-shaped groove.

6. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: The first rotating fixed block is provided with a first rotating placement cavity, a first bearing is installed in the first rotating placement cavity, and the first rotating connection end is rotatably connected to the first bearing.

7. The screw rod with a positioning structure for a linear module according to claim 6, characterized in that: The second rotating fixed block is provided with a second rotating placement cavity, a second bearing is installed in the second rotating placement cavity, and the second rotating connection end is rotatably connected to the second bearing.

8. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: The rotation positioning block is provided with a rotation positioning disk, and the positioning portion is provided on the rotation positioning disk.

9. The screw rod with a positioning structure for a linear module according to claim 1, characterized in that: The positioning portion comprises a plurality of positioning holes circumferentially arranged on the rotating positioning disk, and chamfers are arranged at the openings of the positioning holes.

10. A linear module, characterized in that: A screw rod with a positioning structure for a linear module according to any one of claims 1 to 9.

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