WO2018086260A1

WO2018086260A1 - Device for forming spring by feeding and winding two steel wires

Info

Publication number: WO2018086260A1
Application number: PCT/CN2017/072309
Authority: WO
Inventors: 梁杰
Original assignee: 广州市联柔机械设备有限公司
Priority date: 2016-11-10
Filing date: 2017-01-24
Publication date: 2018-05-17
Also published as: CN106513547A; CN106513547B

Abstract

A device for forming a spring by feeding and winding two steel wires comprises a wire-supplying mechanism (10), a guide mechanism (20), a wire-cutting mechanism (30), and a coil spring mechanism (40). The wire-supplying mechanism (10) comprises at least two pairs of wire-supplying rollers arranged in parallel. The respective pairs of wire-supplying rollers operate independently from each other. The respective pairs of wire-supplying rollers independently hold and convey steel wires. In the device for forming a spring by feeding and winding two steel wires, the wire-supplying mechanism (10) adopts multiple pairs of wire-supplying rollers for conveying steel wires of various sizes. Operations of the respective pairs of wire-supplying rollers are independently controlled by different driving sources. When there is a need to switch to a steel wire of another size to form a spring, activation and deactivation of corresponding driving sources are controlled directly, thereby realizing switching and feeding of steel wires of various sizes, and achieving flexible control and high switching efficiency.

Description

Double steel wire feed winding spring forming device

Technical field

The invention relates to the technical field of spring manufacturing, and in particular to a spring winding device for a pocket spring.

Background technique

With the improvement of people's living standards, people pay more and more attention to the improvement of sleep quality. The existing sleep research shows that when the human body lies on the mattress, the force of the mattress part supporting the various parts of the back of the human body is different. Therefore, there has been a pocket spring mattress composed of springs of different hardness to better meet the needs of users.

The use of springs of different hardness to form a pocket spring mattress necessarily requires the manufacture of springs of different hardnesses and the delivery of springs of different hardnesses in a predetermined sequence to the pocket spring mattress forming machine. The conventional practice is usually At least two coil spring devices are arranged, and springs of different hardness are manufactured by using different coil spring devices, and springs of different hardness are sequentially delivered. However, the use of a plurality of coil spring devices to manufacture springs of different hardnesses not only has high production cost and complicated structure, but also requires a spring conveying system to be arranged to sequentially transfer springs of different hardnesses.

Patent CN 1285430 C discloses a machine and method for manufacturing a two-wire spring, which mainly uses two different steel wires to selectively manufacture two springs of different wire diameters, wherein the steel wire is conveyed by a pair of continuously rotating opposed conveying rollers. The conveying roller only conveys one wire at a time to mesh with the coil forming mechanism, and the coil forming mechanism winds the steel wire into a coil, by setting grooves of different depths on the opposite conveying roller, and controlling axial movement of one of the conveying rollers Using a gap between the grooves of the two conveyor rollers to selectively transport a single wire, although the machine is capable of springs of different hardness that can be rolled by a single device and transported outward in a prescribed sequence, but The structure is complicated, and the axial movement of the conveying roller needs to be controlled to select the conveying wire, the conversion time is long, the production efficiency is low, and the failure rate is high.

Summary of the invention

The technical problem to be solved by the present invention is to provide a double steel wire feed winding spring forming device with compact structure and flexible control.

The technical solution adopted to solve the above technical problem: a double steel wire feed winding spring forming device, comprising a wire feeding mechanism comprising at least two pairs of wire feeding rollers arranged side by side, each pair of the wire feeding rollers Working independently of each other, each pair of the wire feeding rollers independently clamps each steel wire, and when one pair of the wire feeding rollers rotates, the corresponding steel wire is continuously sent out; the guiding mechanism is arranged at the feeding wire One side of the mechanism is used for fixedly guiding each steel wire independently conveyed by each pair of wire feeding rollers; a coil spring mechanism is arranged at the outlet position of the guiding mechanism for winding the steel wire into a spring; and a thread cutting mechanism, It is arranged between the guiding mechanism and the coil spring mechanism to cut the steel wire.

Further, the wire feeding mechanism includes a pair of first wire feeding roller wheels and a pair of second wire feeding roller wheels, the first wire feeding roller wheel includes a first rotating shaft and a first wire feeding wheel, and the second The wire feeding roller comprises a second rotating shaft and a second wire feeding wheel, wherein the first wire feeding wheel and the second wire feeding wheel are arranged closely adjacent to each other, and the first rotating shaft and the second rotating shaft are arranged concentrically inside and outside the first rotating shaft and one end of the first rotating shaft Extending from the second rotating shaft is coupled with the first wire reel, and one end of the second rotating shaft is coupled with the second wire feeding wheel.

Further, each of the pair of wire feed rollers is driven and driven by each of the drive sources independently of each other.

Further, the guiding mechanism comprises a guiding member, and a plurality of wire holes through which the steel wires pass through are arranged side by side on the guiding member, and the diameters of the wire holes are different.

Further, the coil spring mechanism includes a driving mechanism for reciprocating the wire wheel and the driving wire wheel for winding the steel wire into a spring along the wire exiting direction of the guiding mechanism.

Further, the drive mechanism also drives the wire wheel to reciprocate along the axial direction of the wire feed roller.

Further, the coil spring mechanism further includes a ejector pin for assisting winding the steel wire into a spring, and the driving mechanism drives the wire wheel or the thimble to reciprocate along the axial direction of the wire feeding roller.

Further, the driving mechanism includes a swing arm whose one end is hinged with the center of the wire wheel, and the other end of the swing arm is connected with a driving rotating shaft, and the driving rotating shaft rotates the wire wheel to drive the axis of the rotating shaft to swing in an arc, Change the distance between the wire wheel and the wire mechanism.

Further, the thread trimming mechanism includes a wire guide that is in close contact with the guide member for cutting the steel wire.

Beneficial effect: In the double steel wire feed winding spring forming device, the wire feeding mechanism adopts a plurality of pairs of wire feeding rollers to transport steel wires of various specifications and sizes, and each pair of wire feeding rollers is independently controlled and operated by different driving sources. When it is necessary to switch the steel wire coil springs of different specifications and sizes, the respective driving sources are directly controlled to start and stop, thereby achieving the steel wire switching feed of different specifications and sizes, the control is flexible, and the switching is efficient.

DRAWINGS

The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

1 is a schematic structural view of an embodiment of the present invention;

Figure 2 is a side view of an embodiment of the present invention;

3 is a schematic cross-sectional structural view of a wire feeding mechanism according to an embodiment of the present invention;

4 is a schematic partial structural view of an embodiment of the present invention.

detailed description

1 to 4, a double steel wire feed winding spring forming apparatus includes a wire feeding mechanism 10, a guide mechanism 20, a thread trimming mechanism 30, and a coil spring mechanism 40 which are arranged side by side from top to bottom.

The wire feeding mechanism 10 includes at least two pairs of wire feeding rollers arranged side by side, each pair of wire feeding rollers being driven and driven by independent driving sources, and two wire feeding rollers of each pair of wire feeding rollers are arranged opposite to each other. The two wire feeding rollers rotate to jointly hold the steel wire to move and convey, and each pair of wire feeding rollers respectively drive the steel wire feeding without affecting each other.

In this embodiment, the wire feeding mechanism 10 is composed of two pairs of wire feeding rollers for alternately feeding two different sizes of steel wire feeding, and the wire feeding mechanism 10 includes a pair of first wire feeding rollers and a pair of a second wire feeding roller, the first wire feeding roller comprises a first rotating shaft 11 and a first wire feeding wheel 13, and the second wire feeding roller comprises a second rotating shaft 12 and a second wire feeding wheel 14, the first rotating shaft 11 and the The two rotating shafts 12 are arranged concentrically inside and outside. The first rotating shaft 11 and the second rotating shaft 12 are respectively driven to rotate by different driving sources, and do not affect each other. One end of the first rotating shaft 11 protrudes from the second rotating shaft 12, and the first rotating shaft 11 protrudes. The end is coupled to the first wire reel 13 , and one end of the second rotating shaft 12 is coupled to the second wire reel 14 , and the first wire feeding wheel 13 and the second wire feeding wheel 14 are arranged next to each other, and the first rotating shaft 11 and the first rotating shaft 14 are arranged The two rotating shafts 12 are arranged concentrically inside and outside, which effectively saves the internal space of the device and makes the structure more compact.

Of course, according to actual needs, a plurality of pairs of wire feeding rollers can be arranged for alternately feeding steel wire feeding of various specifications and sizes.

The guiding mechanism 20 includes a guiding member 21, and a plurality of wire holes for the passage of the steel wires are arranged side by side on the guiding member 21, and the diameters of the wire holes are different, respectively corresponding to the diameters of the steel wires of various sizes. Abandoning the traditional structure of guiding steel wire feeding by a single wire tunnel, the steel wire is more stable and reliable when rolled into a spring by a coil spring mechanism.

The thread trimming mechanism 30 includes all the knives 31 which abut against the end faces of the guide members 21 so that the cutters 31 can smoothly cut the steel wires.

The coil spring mechanism 40 includes a driving mechanism for reciprocating the wire wheel 41 for winding the steel wire into a spring and the driving wire wheel 41 to reciprocate along the wire exiting direction of the guiding mechanism 20, and the wire wheel 41 reciprocates along the wire exiting direction of the guiding mechanism When moving, the curl diameter of the coil spring can be adjusted by changing the distance between the wire wheel 41 and the guide mechanism 20. Wherein, the driving mechanism can also drive the wire wheel 41 to reciprocate along the axial direction of the wire feeding roller, and when the wire wheel 41 reciprocates along the axial direction of the wire feeding roller, the screw lifting angle of the control coil spring can be adjusted.

In this embodiment, the driving mechanism includes a swing arm 42 whose one end is hinged with the center of the wire wheel 41. The other end of the swing arm 42 is connected with a driving shaft 43. The axial direction of the driving shaft 43 is parallel to the axial direction of the wire feeding roller. That is, in parallel with the axial direction of the steel wire wound into the spring, the rotation of the driving shaft 43 drives the swing arm 42 to swing, so that the wire wheel 41 swings with the axis of the driving shaft 43, and the circular arc of the wire wheel 41 can be decomposed into Two linear movements in the X-direction and the Y-direction in the oscillating plane, that is, the movement of the wire wheel 41 in the X direction, changing the distance between the wire wheel 41 and the wire path of the guiding member 21, so that the winding can be continuously adjusted The size of the spring's crimp diameter. The driving shaft 43 can also reciprocate along its axial direction. The driving shaft 43 is disposed on a slider 44. The slider 44 moves in the direction of the sliding rail 45. The direction of the sliding rail 45 is parallel to the axial direction of the wire feeding roller. The driving slider 44 drives the wire wheel 41 to move in the Z direction to adjust the size of the spiral angle of the control winding spring.

Preferably, the coil spring mechanism 40 further includes a thimble 46 for assisting in winding the steel wire into a spring. The driving mechanism drives the wire wheel 41 or the thimble 46 to reciprocate along the axial direction of the wire feeding roller, thereby adjusting the wire wheel 41 and the thimble. The relative distance between the 46s, thereby controlling the size of the helix of the coiled spring.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, and can be made without departing from the spirit of the invention within the scope of the knowledge of those skilled in the art. Various changes.

Claims

A double steel wire feed winding spring forming device, comprising:

a wire feeding mechanism comprising at least two pairs of wire feeding rollers arranged side by side, each pair of the wire feeding rollers independently running, and each pair of the wire feeding rollers independently sandwiches each steel wire, and one pair When the wire feeding roller rotates, the corresponding steel wire is continuously sent out;

a guiding mechanism disposed on one side of the wire feeding mechanism for fixedly guiding each steel wire independently conveyed by each pair of wire feeding rollers;

a coil spring mechanism disposed at an outlet position of the guiding mechanism for winding the steel wire into a spring;

A thread trimming mechanism is provided on one side of the guiding mechanism for cutting the steel wire.
A double steel wire feed coil spring forming apparatus according to claim 1, wherein said wire feeding mechanism comprises a pair of first wire feed roller wheels and a pair of second wire feed roller wheels, said first The wire feeding roller comprises a first rotating shaft and a first wire feeding wheel, the second wire feeding roller comprises a second rotating shaft and a second wire feeding wheel, and the first wire feeding wheel is spaced apart from the second wire feeding wheel Arranging, the first rotating shaft and the second rotating shaft are arranged concentrically inside and outside, and one end of the first rotating shaft protrudes from the second rotating shaft and is coupled with the first wire feeding wheel, and one end of the second rotating shaft is coupled with the second wire feeding wheel.
A double steel wire feed coil spring forming apparatus according to claim 1, wherein each of said pair of wire feed rollers is driven and driven by respective drive sources independent of each other.
A double steel wire feed coil spring forming apparatus according to claim 1, wherein said guide mechanism comprises a guide member on which a plurality of steel wires pass through are arranged side by side. Wire holes, each of which has a different diameter.
A double steel wire feed coil spring forming apparatus according to claim 1, wherein said coil spring mechanism comprises a wire wheel for winding a steel wire into a spring and a steel wire for driving the wire wheel along the guiding mechanism. A drive mechanism that reciprocates in the outgoing direction.
A double steel wire feed coil spring forming apparatus according to claim 5, wherein said drive mechanism further drives the wire wheel to reciprocate in the axial direction of the wire feed roller.
A double steel wire feed coil spring forming apparatus according to claim 5, wherein said coil spring mechanism further comprises a thimble for assisting winding the steel wire into a spring, said drive mechanism driving the wire wheel or The ejector pin reciprocates along the axial direction of the wire feed roller.
The double steel wire feed coil spring forming device according to any one of claims 5 to 7, wherein the driving mechanism comprises a swing arm whose one end is hinged to the center of the wire wheel, and the other end of the swing arm is The driving shaft is connected, and the driving shaft rotates to drive the wire wheel to rotate the axis of the rotating shaft to change the distance between the wire wheel and the wire mechanism.
A double steel wire feed coil spring forming apparatus according to claim 4, wherein said thread trimming mechanism comprises a wire guide which is in close contact with the guide member for cutting the steel wire.