阅读说明：本技术 一种带有半塑半铜螺母的推杆结构 (Push rod structure with half mould half copper nut ) 是由 倪建芬 于 2018-05-29 设计创作，主要内容包括：本发明公开一种带有半塑半铜螺母的推杆结构,属于推杆技术领域,包括螺杆,所述螺杆上啮合安装有主螺母,所述主螺母的外表面通过螺纹副连接有推杆内管,所述主螺母包括铜螺母和塑料螺母。本发明结构简单,设置由铜螺母和塑料螺母组成的主螺母,塑料螺母紧配螺杆运动,铜螺母松配螺杆,使得推杆在轻载荷下利用塑料螺母配合螺杆运动,在重载荷情况下利用塑料螺母和铜螺母同时配合螺杆运动,能保证其整体强度,具有降低成本和减少摩擦系数以及节能环保的优点,也能减轻重量,提高安全性能和使用寿命。(The invention discloses a push rod structure with a semi-plastic semi-copper nut, which belongs to the technical field of push rods and comprises a screw rod, wherein a main nut is arranged on the screw rod in a meshed mode, the outer surface of the main nut is connected with a push rod inner pipe through a thread pair, and the main nut comprises a copper nut and a plastic nut. The invention has simple structure, the main nut consisting of the copper nut and the plastic nut is arranged, the plastic nut is tightly matched with the screw rod to move, and the copper nut is loosely matched with the screw rod to ensure that the push rod moves by matching the plastic nut with the screw rod under light load, and simultaneously matches the screw rod with the plastic nut and the copper nut to move under heavy load, thereby ensuring the integral strength of the push rod, having the advantages of reducing cost and friction coefficient, saving energy and protecting environment, reducing weight, improving safety performance and prolonging service life.)

1. The utility model provides a push rod structure with mould half copper nut partly, includes the screw rod, characterized by: the screw rod is provided with a main nut in a meshed mode, the outer surface of the main nut is connected with a push rod inner pipe through a thread pair, and the main nut comprises a copper nut and a plastic nut.

2. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 1, wherein: the copper nut and the plastic nut are integrated.

3. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 1 or 2, wherein: copper nut includes gear section, separation section and screw thread section, the surface of gear section is equipped with and is no less than one annular, at least one be equipped with a plurality of recesses one on the annular, the surface of screw thread section is equipped with and is no less than one channel bar, and its terminal surface is equipped with recess two.

4. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 3, wherein: the second groove is a plurality of arc-shaped grooves or a plurality of circular grooves or an annular groove.

5. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 3, wherein: the outer surface of the gear section is provided with a guide sleeve, a fixing pin is arranged between the gear section and the guide sleeve, and the fixing pin is located in the first groove.

6. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 5, wherein: the inside of copper nut is equipped with the oil storage tank that is no less than one, the oil storage tank can be connected with oiling passageway.

7. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 6, wherein: the oil injection channel penetrates through the copper nut and the push rod inner tube.

8. the push rod structure with the semi-plastic semi-copper nut as claimed in claim 6, wherein: the oil injection channel penetrates through the copper nut, the push rod inner tube and the guide sleeve.

9. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 4, wherein: the end face of the plastic nut, facing the copper nut, is provided with two raised strips corresponding to the grooves, and the end face of the plastic nut is provided with a plurality of circumferentially arranged through grooves.

10. The push rod structure with the semi-plastic semi-copper nut as claimed in claim 1, wherein: the push rod inner tube is connected with an anti-drop gasket through a thread pair.

Technical Field

The invention discloses a push rod structure with a semi-plastic semi-copper nut, and belongs to the technical field of push rods.

Background

The electric push rod is an electric driving device which converts the rotary motion of a motor into the linear reciprocating motion of the push rod, can be used as an execution machine in various simple or complex process flows to realize remote control, centralized control or automatic control, a screw rod of the electric push rod is usually connected with a copper nut, but the manufacturing cost and the friction coefficient of the copper nut are higher, and if an all-plastic nut is used, the electric push rod is only suitable for low-load work, and has low tensile strength and easy deformation.

disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a push rod structure with a semi-plastic semi-copper nut so as to solve the problems in the background technology.

in order to achieve the purpose, the invention provides the following technical scheme to realize the purpose:

The utility model provides a push rod structure with half copper nut is moulded half, includes the screw rod, main nut is installed in the meshing on the screw rod, main nut's surface has push rod inner tube, characterized by through the vice push rod inner tube that is connected with of screw thread: the main nut comprises a copper nut and a plastic nut.

Preferably, the method comprises the following steps: the copper nut and the plastic nut are integrated.

preferably, the method comprises the following steps: copper nut includes gear section, separation section and screw thread section, the surface of gear section is equipped with and is no less than one annular, at least one be equipped with a plurality of recesses one on the annular, the surface of screw thread section is equipped with and is no less than one channel bar, and its terminal surface is equipped with recess two.

Preferably, the method comprises the following steps: the second groove is a plurality of arc-shaped grooves or a plurality of circular grooves or an annular groove.

Preferably, the method comprises the following steps: the outer surface of the gear section is provided with a guide sleeve, a fixing pin is arranged between the gear section and the guide sleeve, and the fixing pin is located in the first groove.

Preferably, the method comprises the following steps: the inside of copper nut is equipped with the oil storage tank that is no less than one, the oil storage tank can be connected with oiling passageway.

Preferably, the method comprises the following steps: the oil injection channel penetrates through the copper nut and the push rod inner tube.

Preferably, the method comprises the following steps: the oil injection channel penetrates through the copper nut, the push rod inner tube and the guide sleeve.

Preferably, the method comprises the following steps: the end face of the plastic nut, facing the copper nut, is provided with two raised strips corresponding to the grooves, and the end face of the plastic nut is provided with a plurality of circumferentially arranged through grooves.

Preferably, the method comprises the following steps: the push rod inner tube is connected with an anti-drop gasket through a thread pair.

The invention has the beneficial effects that:

According to the invention, the main nut consisting of the copper nut and the plastic nut is arranged, the plastic nut is tightly matched with the screw rod to move, and the copper nut is loosely matched with the screw rod, so that the push rod moves by matching the plastic nut with the screw rod under a light load, and simultaneously matches the screw rod with the plastic nut and the copper nut to move under a heavy load; the main nut is characterized in that the inner teeth and the outer dimension of the copper nut are machined firstly, the outer thread of the copper nut is not machined, then the machined copper nut is screwed into a screw tap of a mold, an injection molding machine is used for injection molding to form a plastic nut, and finally the outer threads of the copper nut and the plastic nut are machined on a machine tool, so that the main nut which is half-plastic and half-copper is formed; the annular groove is formed in the outer surface of the gear section, the first groove is formed in the annular groove, the fixing pin is arranged in the first groove, the gear section is molded through injection to form the guide sleeve, and therefore the connection firmness of the guide sleeve and the copper nut can be improved.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of a push rod structure with a semi-plastic semi-copper nut according to the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of a push rod structure with a semi-plastic semi-copper nut according to the present invention;

FIG. 3 is a schematic structural diagram of a plastic nut in a push rod structure with a semi-plastic semi-copper nut according to the present invention;

FIG. 4 is a front view of a copper nut in a push rod structure with a semi-plastic semi-copper nut of the present invention;

Fig. 5 is a side view of a copper nut in a push rod structure with a semi-plastic semi-copper nut of the present invention.

Reference numerals: 1. an anti-drop washer; 2. a screw; 3. a push rod inner tube; 4. a main nut; 5. a plastic nut; 6. a copper nut; 7. an oil injection channel; 8. a fixing pin; 9. a guide sleeve; 10. an oil storage tank; 11. a convex strip; 12. a through groove; 13. a gear segment; 14. a first groove; 15. a ring groove; 16. a separation section; 17. groove strips; 18. a threaded segment; 19. and a second groove.

Detailed Description

The structure of the push rod with the semi-plastic semi-copper nut of the invention is further explained with reference to fig. 1 to 5.

The utility model provides a push rod structure with half copper nut is moulded half, includes screw rod 2, main nut 4 is installed in the meshing on the screw rod 2, main nut 4's surface is connected with push rod inner tube 3, characterized by through the screw thread pair: the main nut 4 comprises a copper nut 6 and a plastic nut 5; the copper nut 6 and the plastic nut 5 are integrated; the copper nut 6 comprises a gear section 13, a separation section 16 and a thread section 18, wherein the outer surface of the gear section 13 is provided with at least one annular groove 15, at least one annular groove 15 is provided with a plurality of first grooves 14, the outer surface of the thread section 18 is provided with at least one groove strip 17, and the end surface of the thread section is provided with a second groove 19; the second groove 19 is a plurality of arc-shaped grooves or a plurality of circular grooves or an annular groove; a guide sleeve 9 is arranged on the outer surface of the gear section 13, a fixing pin 8 is arranged between the gear section 13 and the guide sleeve 9, and the fixing pin 8 is positioned in the first groove 14; at least one oil storage groove 10 is formed in the copper nut 6, and the oil storage groove 10 can be connected with an oil injection channel 7; the end face, facing the copper nut 6, of the plastic nut 5 is provided with a convex strip 11 corresponding to the second groove 19, and the end face of the plastic nut 5 is provided with a plurality of circumferentially arranged through grooves 12; the push rod inner tube 3 is connected with an anti-drop gasket 1 through a thread pair.

according to the invention, the main nut 4 consisting of the copper nut 6 and the plastic nut 5 is arranged, the plastic nut 5 is tightly matched with the screw rod 2 to move, and the copper nut 6 is loosely matched with the screw rod 2 to enable the push rod to move by matching the plastic nut 5 with the screw rod 2 under a light load and by matching the plastic nut 5 with the copper nut 6 with the screw rod 2 under a heavy load, so that compared with an all-copper nut, the push rod has the advantages of reducing cost and friction coefficient, saving energy and protecting environment, reducing weight and improving safety performance, and compared with an all-plastic nut, the push rod can ensure integral strength, has a wide application range and prolongs the service life; the main nut 4 is formed by firstly processing the inner teeth and the outer dimension of the copper nut 6, not processing the external thread of the copper nut 6, then screwing the processed copper nut 6 into the upper surface of a screw tap of a mould, and forming the plastic nut 5 by injection molding through an injection molding machine, and finally processing the external threads of the copper nut 6 and the plastic nut 5 on a machine tool, so that the main nut 4 which is half-plastic and half-copper is formed, and due to the arrangement of the second groove 19, the connection firmness of the copper nut 6 and the plastic nut 5 can be enhanced, and the service life of the main nut 4 is prolonged; the ring groove 15 is formed in the outer surface of the gear section 13, the first groove 14 is formed in the ring groove 15, the fixing pin 8 is arranged in the first groove 14, the guide sleeve 9 is formed by injection molding of the gear section 13, and therefore the connection firmness of the guide sleeve 9 and the copper nut 6 can be improved.