CN211366593U

CN211366593U - Mechanical expansion shaft structure

Info

Publication number: CN211366593U
Application number: CN201922399855.7U
Authority: CN
Inventors: 蔡章飞
Original assignee: Kunshan Shenghui Machinery Technology Co ltd
Current assignee: Kunshan Shenghui Machinery Technology Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-28
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a machinery axle construction that rises, include: the shaft body and the symmetry set up the spindle nose at axis body both ends be provided with the screw rod in the axis body, the both ends of screw rod are rotated through the bearing and are set up in the spindle nose, the one end of screw rod is stretched out the spindle nose and is connected with step motor's motor shaft be provided with the swivel nut rather than mutually supporting on the screw rod the both ends symmetry of swivel nut is provided with L type location traveller be provided with the location spout of mutually supporting with L type location traveller respectively inside the both ends of axis body evenly be provided with a plurality of toper voussoirs on the swivel nut the outside of axis body evenly is provided with a plurality of ejector pin slide openings with toper voussoir one-to-one along its axis direction, the ejector pin slide opening slides and wears to be equipped with rather than mutually supporting ejector pin.

Description

Mechanical expansion shaft structure

Technical Field

The utility model relates to an axis body technical field specifically is a mechanical axle construction that rises.

Background

The expanding shaft is generally used in a machine with winding, unwinding and cutting functions and is divided into an air expanding shaft and a mechanical expanding shaft, wherein the mechanical expanding shaft is generally used in an air source-free environment. The concentricity and the cylindricity of the existing mechanical expansion shaft are poor, and the extension length of the ejector rod is easily different in the using process, so that the top plate is bent, and the expansion requirement of the core part of the coiled material cannot be met.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a machinery axle structure that rises has solved some current concentricity and cylindricity relatively poor, leads to the length that the ejector pin stretches out easily to lead to the top flat to take place crooked problem in the use.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a mechanical expansion shaft structure, comprising: the device comprises a shaft body and shaft heads symmetrically arranged at two ends of the shaft body, wherein a screw rod is arranged in the shaft body, two ends of the screw rod are rotatably arranged in the shaft heads through bearings, one end of the screw rod extends out of the shaft heads and is connected with a motor shaft of a stepping motor, a screw sleeve matched with the screw rod is arranged on the screw rod, L-shaped positioning sliding columns are symmetrically arranged at two ends of the screw sleeve, positioning sliding chutes matched with the L-shaped positioning sliding columns are respectively arranged in two ends of the shaft body, a plurality of conical wedge blocks are uniformly arranged on the screw sleeve, a plurality of ejector rod sliding holes corresponding to the conical wedge blocks in one-to-one correspondence are uniformly arranged on the outer side of the shaft body along the axial direction of the shaft body, ejector rods matched with the ejector rod sliding holes are arranged in a sliding mode in the ejector rod sliding holes in a penetrating mode, an inclined wedge surface matched with the conical wedge blocks is arranged, the device comprises a push rod, a conical wedge block, a push rod sliding hole, a push rod, a reset spring, a shaft body, a limiting sliding groove, a limiting sliding block, a reset spring and a shaft body, wherein the shaft body is arranged between the push rod sliding hole and the conical wedge block, the push rod in the limiting sliding groove is provided with the limiting sliding block matched with the limiting sliding groove, the push rod between the limiting sliding block and the push rod sliding hole is sleeved with the reset spring, one end of the reset spring abuts.

Advantageous effects

The utility model provides a machinery axle construction that rises. Compared with the prior art, the method has the following beneficial effects: novel structure adopts screw rod and swivel nut drive, adopts the tapered wedge and the cooperation of the tapered wedge face of ejector pin lower extreme on the swivel nut, can guarantee better concentricity and cylindricity, guarantees that the length that the ejector pin stretches out is unanimous in the use, prevents that the top piece from taking place the bending, satisfies the tight demand that rises of coiled material core.

Drawings

Fig. 1 is a schematic structural diagram of the mechanical expanding shaft structure of the present invention.

In the figure: 1. the device comprises a shaft body, 2, a shaft head, 3, a screw rod, 4, a bearing, 5, a stepping motor, 6, a motor shaft, 7, a thread sleeve, 8, an L-shaped positioning sliding column, 9, a positioning sliding groove, 10, a conical wedge block, 11, a push rod sliding hole, 12, a push rod, 13, a wedge surface, 14, a top plate, 15, a limiting sliding groove, 16, a limiting sliding block, 17 and a reset spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a mechanical expansion shaft structure, comprising: the device comprises a shaft body 1 and shaft heads 2 symmetrically arranged at two ends of the shaft body 1, wherein a screw rod 3 is arranged in the shaft body 1, two ends of the screw rod 3 are rotatably arranged in the shaft heads 2 through bearings 4, one end of the screw rod 3 extends out of the shaft heads 2 and is connected with a motor shaft 6 of a stepping motor 5, a screw sleeve 7 matched with the screw rod 3 is arranged on the screw rod 3, L-shaped positioning sliding columns 8 are symmetrically arranged at two ends of the screw sleeve 7, positioning sliding chutes 9 matched with the L-shaped positioning sliding columns 8 are respectively arranged in two ends of the shaft body 1, a plurality of conical wedge blocks 10 are uniformly arranged on the screw sleeve 7, a plurality of ejector rod sliding holes 11 corresponding to the conical wedge blocks 10 one by one are uniformly arranged at the outer side of the shaft body 1 along the axial direction of the shaft body, ejector rod 12 matched with the ejector rod sliding holes 11 are penetrated in a sliding manner, and an inclined plane 13 matched with the conical wedge blocks 10 is arranged at one end of the ejector, the other end of the ejector rod 12 extending out of the shaft body 1 is connected with the top plate 14, a limiting sliding groove 15 is arranged in the shaft body 1 between the ejector rod sliding hole 11 and the conical wedge block 10, a limiting slide block 16 matched with the limiting sliding groove 15 is arranged on the ejector rod 12 in the limiting sliding groove 15, a return spring 17 is sleeved on the ejector rod 12 between the limiting slide block 16 and the ejector rod sliding hole 11, one end of the return spring 17 abuts against the limiting slide block 16, and the other end of the return spring 17 abuts against the shaft body 1.

When the device is used, the coiled material core is sleeved on the outer side of the expansion shaft, the motor shaft 6 of the stepping motor 5 drives the screw rod 3 to rotate in the shaft head 2 through the bearing 4, the screw rod 3 drives the screw sleeve 7 matched with the screw rod 3 to move axially rightwards, the screw sleeve 7 slides in the positioning chute 9 through the L-shaped positioning sliding column 8, the screw sleeve 7 drives the conical wedge block 10 to move rightwards, the conical wedge block 10 pushes the inclined wedge surface 13 to gradually move outwards, so that the ejector rod 12 is pushed to slide outwards in the ejector rod sliding hole 11, and the ejector rod 12 drives the top plate 14 to move outwards to abut against the coiled material core, so that the coiled material core is compressed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A mechanical shaft expanding structure is characterized in that: the method comprises the following steps: the device comprises a shaft body (1) and shaft heads (2) symmetrically arranged at two ends of the shaft body (1), a screw rod (3) is arranged in the shaft body (1), two ends of the screw rod (3) are rotatably arranged in the shaft heads (2) through bearings (4), one end of the screw rod (3) extends out of the shaft heads (2) and is connected with a motor shaft (6) of a stepping motor (5), screw sleeves (7) matched with the screw rod (3) are arranged on the screw rod (3), L-shaped positioning sliding columns (8) are symmetrically arranged at two ends of the screw sleeves (7), positioning sliding chutes (9) matched with the L-shaped positioning sliding columns (8) are respectively arranged in two ends of the shaft body (1), a plurality of conical wedge blocks (10) are uniformly arranged on the screw sleeves (7), a plurality of ejector rod sliding holes (11) corresponding to the conical wedge blocks (10) one by one are uniformly arranged on the outer side of the shaft body (1) along the axial direction, a top rod (12) which is mutually matched with the top rod sliding hole (11) is arranged in the top rod sliding hole in a sliding way, one end of the ejector rod (12) extending into the shaft body (1) is provided with an inclined wedge surface (13) which is matched with the conical wedge block (10), the other end of the mandril (12) extending out of the shaft body (1) is connected with the top plate (14), a limiting sliding groove (15) is arranged in the shaft body (1) between the ejector rod sliding hole (11) and the conical wedge block (10), a limit slide block (16) which is mutually matched with the limit slide groove (15) is arranged on the mandril (12) in the limit slide groove (15), a return spring (17) is sleeved on the ejector rod (12) between the limiting slide block (16) and the ejector rod slide hole (11), one end of the reset spring (17) is abutted against the limiting slide block (16), and the other end of the reset spring (17) is abutted against the shaft body (1).