CN202387882U

CN202387882U - Vertical moving mechanism of spring machine core knife

Info

Publication number: CN202387882U
Application number: CN201120469889XU
Authority: CN
Inventors: 俞度; 俞家林; 俞家淼
Original assignee: SHAOXING SPRING HOME DEGREES MACHINERY CO Ltd
Current assignee: SHAOXING SPRING HOME DEGREES MACHINERY CO Ltd
Priority date: 2011-11-23
Filing date: 2011-11-23
Publication date: 2012-08-22
Anticipated expiration: 2021-11-23

Abstract

The utility model relates to a vertical moving mechanism of a spring machine core knife. The vertical moving mechanism of the spring machine core knife comprises a core knife, a core knife holder, wallboard fixing seats, a bearing block, a round nut, a screw, a threaded sleeve, a gear, self-aligning tapered roller bearings and a check nut, wherein the core knife holder is a rectangular sliding block, and the two ends of the core knife holder are inserted into the wallboard fixing seats; the core knife is fixedly arranged in a centrally convex through hole, and a top-end screw hole is in threaded connection with the screw; the core knife holder can slide up and down in a slideway formed by the wallboard fixing seats; the bearing block is fixedly arranged on a front wallboard of the spring machine and is used for accommodating the upper and lower self-aligning tapered roller bearings which are oppositely arranged, and the threaded sleeve is sleeved at the middle section of the screw, and the inner threads at the lower end of the threaded sleeve are connected with outer threads of the screw; and the two self-aligning tapered roller bearings are sleeved on the outer wall, and the gear is fixedly arranged above the threaded sleeve by a flat key. The vertical moving mechanism of the spring machine core knife has the beneficial effects that when the threaded sleeve is driven by the gear to rotate, the core knife can be driven to lift, and the movement direction and movement speed of the core knife are determined by the rotating speed and rotating direction of the gear, so that the dynamic lift of the core knife is driven in accordance with the process requirements.

Description

The reciprocating mechanism of spring movement cutter

Technical field

The present invention relates to wire does not have cut machinery field, relates in particular to a kind of reciprocating mechanism of spring movement cutter.

Background technology

The core cutter is the necessary vital part of spring winding machinery.In the spring winding process, steel wire is forced to be seen off, moves to a direction; In order to be rolled into spring; Utilize 3 theoretical foundations that can confirm circular diameter, designed two push rods and the steel wire frid of diameter changing mechanism, from three position different directions, steel wire is pushed (i.e. 3 points); Change the direction of advance of steel wire, make it be wound into turn.The core cutter of prior art is just used as cutting off steel wire; Moving up and down of core cutter; Generally regulate by hand, also have the slide block that adopts motor-driven to spur in the slide block pair to move up and down, because the core cutter is installed on the slide block; The core cutter moves up and down so slide block moves up and down just, but is not dynamic control.The core cutter is that cantilever is installed, because the slide block pair is installed in the casing, so the cutting knife application point is bigger from the distance of slide block sub-center face; Therefore, when cutting off steel wire, the flexural deformation of core cutter and slide block pair is big; Steel wire cut-off part amount of deflection is big, makes the diameter distortion of being cut turn, precise decreasing.As you know, the steel wire high resilience, steel wire plastic deformation under two push rods and these 3 effects of steel wire frid curved spiral coil, but after leaving push rod, steel wire can rebound again, and the bounce-back degree is very big, and bounce-back rear spring diameter homogeneity is poor, and the wind spring precision is low.This single use deflectable forming principle can't improve the wind spring precision, needs bending once more to improve the wind spring formed precision.

Summary of the invention

The objective of the invention is to overcome the defective of above-mentioned prior art, provide a kind of core cutter to move dynamically to control, spring diameter is through twice brake forming, accurately the spring movement cutter reciprocating mechanism of control spring outside dimension.

The present invention is achieved through following technical proposals:

The reciprocating mechanism of spring movement cutter comprises the core cutter, core tool rest, wallboard holder, bearing block, round nut, screw mandrel, screw shell, gear, lock washer, self-aligning conical roller bearing, check nut.

The core cutter is fixed in the core tool rest; The core tool rest is rectangular shaped slider, and intermediate projections has through hole to be used for the mounting core cutter, and the top has the lower end of screw and screw mandrel to be threaded, and on screw mandrel, is overlapping a check nut and be used for fixing connection status; Core tool rest two ends are inserted in up and down in two wallboard holders, in the screw mandrel pulling down, can in the slideway of wallboard holder composition, slide up and down;

Bearing block is fixed on the coiling machine front wallboard, has a circle protruding in the middle of the inner core, forms two steps up and down, holds two self-aligning conical roller bearings of arranging in opposite directions up and down; That top bearing outer ring is shelved on the upper surface of bearing block step, we can say that the weight of whole drive disk assembly all is pressed on this upper surface of bearing block through this self-aligning conical roller bearing; Below the outer ring of that self-aligning conical roller bearing hold out against on the step lower surface of bearing block, inner ring is shelved on the raised step of screw shell lower end;

Screw shell is being overlapped in the screw mandrel stage casing, and the internal thread of screw shell lower end is connected with the screw mandrel external screw thread; There are external screw thread and circle nut to be threaded on the stage casing outer wall of screw shell; Two self-aligning conical roller bearings are being overlapped in the thread segment below, lay respectively in the up/down steps of bearing block; When the circle nut during rotation and lifting, can compress the inner ring of bearing through seal cover on screw shell, use the tightness of adjustment bearing, and embed circle fixed by nut position with lock washer; Gear has been fixed with flat key in the top of screw shell, when the gear driven bearing sleeve horizontally rotates, can drive the screw mandrel oscilaltion.

The invention has the beneficial effects as follows: when the gear driven screw shell rotates; Can drive screw mandrel indirectly and go up and down, and drive the core cutter that is fixed on the screw mandrel and go up and down, the rotating speed of gear with turn to; Determined the moving direction and the translational speed of screw mandrel, realized driving the dynamic up-down of core cutter according to technological requirement.Turn has adopted the principle of second order buckling moulding, has improved the wind spring uniformity, has improved the wind spring precision.The slideway that wallboard holder of the present invention is formed is longer more than 3 times than traditional slide, secondary nearly about 1 times of spring place of incision than conventional sliders, and hron spacing has been lacked, and the turning torque when steel wire cuts off is just little, the little spring external diameter precision that just improved of core cutter distortion.

Description of drawings

Fig. 1 is the assembling outline drawing of the reciprocating mechanism of spring movement cutter;

Fig. 2 is the front view of the reciprocating mechanism of spring movement cutter;

Fig. 3 is the cutaway view of Fig. 2 along the A-A line;

Fig. 4 is the B place enlarged drawing of Fig. 3;

Fig. 5 is a drive disk assembly sketch map of the present invention;

Fig. 6 is the schematic diagram that pushes of spring steel wire.

Description of reference numerals:

1 core cutter, 2 core tool rests, 3 wallboard holders, 4 bearing blocks, 5 round nuts, 6 screw mandrels, 7 screw shells, 8 gears, 9 lock washers, 10 self-aligning conical roller bearings, 11 check nuts.

The specific embodiment

Come further to set forth the present invention below in conjunction with embodiment and accompanying drawing:

Embodiment

The reciprocating mechanism of spring movement cutter such as Fig. 1-shown in Figure 5; Two self-aligning conical roller bearings 10 that are fixed on 4 li of bearing blocks are arranged in opposite directions; Automatically the nonparallelism between adjustment screw shell 7 axial lines and core tool rest 2 symmetrical center line makes 2 slips of core tool rest smooth and easy; Round nut 5 can rotation and lifting on screw shell 7; Its lower surface is pressed on the inner ring of self-aligning conical roller bearing through seal cover, uses the tightness of adjustment bearing, after adjustment finishes; The projection bending of lock washer in the breach of round nut 5, fixing adjustment state; The upper end of core tool rest 2 and screw mandrel 6 lower ends are threaded, and fixing with check nut 11.

When gear 8 drives screw mandrels 6 oscilaltions together with screw shell 7 and the core tool rest 2 that is fixed together of screw mandrel 6 lower ends and core cutter 1 in company with going up and down, realized dynamically moving of core cutter 1.

As shown in Figure 6; Be adjusted at the inner diameter location that is positioned at after two push rod C, D and the resilience of steel wire frid E formed spring circle to core cutter 1 position a little upwards a bit, make two push rod C, D and core cutter 1 form the circle of new brake forming, bending direction is with bending direction is opposite for the first time; It is the equal of brake forming for the second time; Current flexural deformation degree is very little, mainly is to eliminate residual stress and eliminate residual deformation, improves the wind spring uniformity.The inventor moulding for the first time the spring external diameter be set at more a little bit smallerly than technological requirement, during through the core cutter, utilize moulding for the second time at steel wire, make the complete according with process requirements of spring external diameter, confirm size in the final stage that is shaped.Because the core cutter is dynamic control, during the Different diameter spring of coiling pagoda spring, waist drum spring, the variation of saddle spring equal diameter, also can realize twice brake forming.

Claims

1. the reciprocating mechanism of spring movement cutter is characterized in that: comprise the core cutter, core tool rest, wallboard holder, bearing block, round nut, screw mandrel, screw shell, gear, self-aligning conical roller bearing;

The core cutter is fixed in the core tool rest; The core tool rest is a rectangular shaped slider, and intermediate projections has through hole to be used for the mounting core cutter, and the top has the lower end of screw and screw mandrel to be threaded; Core tool rest two ends are inserted in up and down in two wallboard holders, in the screw mandrel pulling down, can in the slideway of wallboard holder composition, slide up and down;

Bearing block is fixed on the coiling machine front wallboard, has a circle protruding in the middle of the inner core, forms two steps up and down, holds two self-aligning conical roller bearings of arranging in opposite directions up and down; That top bearing outer ring is shelved on the upper surface of bearing block step; Below the outer ring of that self-aligning conical roller bearing hold out against on the step lower surface of bearing block, inner ring is shelved on the raised step of screw shell lower end;

Screw shell is being overlapped in the screw mandrel stage casing, and the internal thread of screw shell lower end is connected with the screw mandrel external screw thread; There are external screw thread and circle nut to be threaded on the stage casing outer wall of screw shell; Two self-aligning conical roller bearings are being overlapped in the thread segment below, lay respectively in the up/down steps of bearing block; When the circle nut during rotation and lifting, can compress the inner ring of bearing through seal cover on screw shell, use the tightness of adjustment bearing; Gear has been fixed with flat key in the top of screw shell, when the gear driven bearing sleeve horizontally rotates, can drive the screw mandrel oscilaltion.

2. the reciprocating mechanism of spring movement cutter according to claim 1 is characterized in that: described core tool rest and wire rod thread junction, and on screw mandrel, overlap a check nut and be used for fixing connection status.

3. the reciprocating mechanism of spring movement cutter according to claim 1 is characterized in that: described screw shell and round nut are threaded, but after position adjustment finishes, embed round nut with lock washer and use fixing adjustment position.