CN211117420U

CN211117420U - Lead screw push rod mechanism

Info

Publication number: CN211117420U
Application number: CN201921835604.2U
Authority: CN
Inventors: 徐春雷; 王彦军; 隋会光; 周广林
Original assignee: Harbin Lianke Packaging Machinery Co ltd
Current assignee: Harbin Lianke Packaging Machinery Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-28
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to a lead screw push rod mechanism. The screw transmission is mechanical transmission which realizes the conversion between rotary motion and linear motion by screwing a screw and a thread tooth surface, and the thread transmission is a transmission mode with the highest precision and realizes the conversion between the rotary motion and the linear motion. A lead screw push rod mechanism comprises: roating seat (1), transition sleeve (2), guide rail (3) and projecting shaft (5), transition sleeve passes through on M6X 20's the socket of hexagon socket head cap screw connection servo motor (9), the guide rail passes through M4X 16 on the socket of hexagon socket head cap screw fixation, projecting shaft and screw nut (10) fixed connection, screw nut passes through the nut and cooperates with screw thread drive's form with the lead screw, flange clamp on the roating seat is between transition sleeve and servo motor, the welding has the round pin axle in both sides, and with deep groove ball bearing (11) cooperation, the bearing is installed among the bearing frame. The utility model discloses be applied to on the equipment that needs high thrust and position required precision.

Description

Lead screw push rod mechanism

The technical field is as follows:

the utility model relates to a lead screw push rod mechanism.

Background art:

the screw transmission is mechanical transmission which realizes the conversion of rotary motion and linear motion by screwing a screw and a thread tooth surface, the thread transmission is a transmission mode with the highest precision, the conversion between the rotary motion and the linear motion is realized, a set of telescopic lead screw structure is designed according to actual field experience and a mechanical theory, the structure replaces the use working condition of an air cylinder to a certain extent, the thrust of the telescopic lead screw structure is far larger than that of the air cylinder under the same overall dimension, the stroke can be freely designed, the telescopic lead screw structure can be used as a power source under certain occasions needing large thrust, the carrying capacity and the position precision of machinery are greatly improved, the telescopic lead screw structure can be suitable for an automatic lifting mechanism, a swing arm connecting rod mechanism and the like, and the perfect combination of precise positioning and load capacity is realized.

The invention content is as follows:

the utility model aims at providing a lead screw push rod mechanism.

The above purpose is realized by the following technical scheme:

a lead screw push rod mechanism comprises: the transition sleeve is connected with the sleeve of the servo motor through M6X 20 hexagon socket head cap screws, the guide rail is fixed on the sleeve through M4X 16 hexagon socket head cap screws, the projecting shaft is fixedly connected with a screw nut, the screw nut is matched with a screw in a thread transmission mode through a nut, a flange on the rotating seat is clamped between the transition sleeve and the servo motor, pin shafts are welded on two sides of the flange, the flange is matched with bearings, the bearings are installed in the bearing seats, and the bearing seats are fixed on the mounting seat through M4X 12 hexagon socket head cap screws.

The lead screw push rod mechanism, the tip and the fisheye joint fixed connection of projecting shaft, the mount pad reserve and have the mounting hole for install lead screw and servo motor output shaft pass through quincunx coupling joint, and install two skeleton sealing washer at the front end, compress tightly fixedly through preceding shrouding, preceding shrouding with the guide rail pass through M4 with 16 hexagon socket head cap screw and connect.

The utility model has the advantages that:

1. compared with the air cylinder, the device has the advantage of higher thrust; meanwhile, the servo motor is easy to control the extending position of the lead screw, so that the purpose of accurate positioning is achieved.

The screw transmission of the utility model is more accurate compared with other mechanical structures, the thread self-locking can prevent the back-off, and the braking function is realized; the stroke can be adjusted, so that the device is convenient to use for multiple purposes, and the standardization degree is improved;

3. the utility model discloses a rotatory displacement is realized to the transformation of linear displacement to spiral transmission's classic mechanical principle, and servo motor controls flexible stroke and propulsion speed, reaches the parameter and the performance of prediction.

The utility model discloses replace the use operating mode of cylinder to a certain extent, under the equal overall dimension, its thrust is far more big than the cylinder, and the stroke can freely design, can regard as the power supply to use under the occasion of certain needs big thrust, has greatly improved mechanical carrying capacity and position accuracy, and this mechanism is applicable to automatic lifting mechanism, swing arm link mechanism etc. has realized the perfect adaptation of accurate positioning and load-carrying capacity.

The utility model discloses servo motor passes through the shaft coupling and is connected with the lead screw, and lead screw nut passes through screwed connection with the projecting shaft and fixes, and the lead screw drives the nut at the rotation in-process and realizes linear motion, prevents that nut from rotating in the motion process, has the guide way on the projecting shaft to realize that circular motion converts high accuracy linear motion into.

Description of the drawings:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a right side view of fig. 1.

1. The device comprises a rotary seat, 2, a transition sleeve, 3, a guide rail, 4, a sleeve, 5, an extension shaft, 6, a front sealing plate, 7, a mounting seat, 8, a bearing seat, 9, a servo motor, 10, a lead screw nut, 11, a deep groove ball bearing, 12, a fisheye joint, 13, a quincunx coupling, 14 and a framework sealing ring.

The specific implementation mode is as follows:

example 1:

a lead screw push rod mechanism comprises: the rotary seat comprises a rotary seat 1, a transition sleeve 2, a guide rail 3 and an extension shaft 5, wherein the transition sleeve is connected with a sleeve of a servo motor 9 through an inner hexagonal screw M6 x 20, the guide rail is fixed on the sleeve through an inner hexagonal screw M4 x 16, the extension shaft is fixedly connected with a lead screw nut 10, the lead screw nut is matched with a lead screw in a thread transmission mode through a nut, a flange on the rotary seat is clamped between the transition sleeve and the servo motor, pin shafts are welded on two sides of the rotary seat and matched with a deep groove ball bearing 11, a bearing is installed in the bearing seat, and the bearing seat is fixed on a mounting seat through an inner hexagonal screw M4 x 12.

Example 2:

according to the screw rod push rod mechanism in embodiment 1, the end of the extension shaft is fixedly connected with the fisheye joint 12, the mounting seat is reserved with a mounting hole for mounting a screw rod to be connected with the output shaft of the servo motor through a quincunx coupler 13, two framework sealing rings 14 are mounted at the front end of the mounting seat and are pressed and fixed through a front sealing plate, and the front sealing plate is connected with the guide rail through an inner hexagon screw of M4 x 16.

Claims

1. A lead screw push rod mechanism comprises: roating seat, transition sleeve, guide rail and projecting shaft, characterized by: the transition sleeve is connected with a sleeve of a servo motor through an inner hexagon screw M6X 20, the guide rail is fixed on the sleeve through an inner hexagon screw M4X 16, the extension shaft is fixedly connected with the lead screw nut, the lead screw nut is matched with the lead screw in a thread transmission mode through the nut, a flange on the rotating seat is clamped between the transition sleeve and the servo motor, pin shafts are welded on two sides of the flange and are matched with the deep groove ball bearing, the bearing is installed in the bearing seat, and the bearing seat is fixed on the installation seat through an inner hexagon screw M4X 12.

2. The lead screw and push rod mechanism of claim 1, wherein: the end part of the extension shaft is fixedly connected with the fisheye joint, a mounting hole is reserved in the mounting base and used for mounting a lead screw to be connected with an output shaft of the servo motor through a quincunx coupler, two framework sealing rings are mounted at the front end of the mounting base and are compressed and fixed through a front sealing plate, and the front sealing plate is connected with the guide rail through an inner hexagon screw of M4-16.