CN221209704U - Spring cutting-off knife assembly - Google Patents

Abstract

The utility model discloses a spring cutting-off knife assembly, which comprises a mounting frame (2) which is in sliding connection with a frame (1) of a spring machine, wherein a driving mechanism is arranged on the mounting frame (2), a cutting-off knife (4) is arranged on the mounting frame (2), the cutting-off knife (4) is disc-shaped, an annular cutting edge (5) is formed at the periphery of the cutting-off knife (4), and the cutting-off knife (4) is detachably connected with the mounting frame (2); the utility model discloses a cutting knife, including mounting bracket (2), cutting knife (4), locating hole, pivot (3) are equipped with in cutting knife (4) axial, locating hole, and the one end radial outside extension that mounting bracket (2) was kept away from to pivot (3) forms clamp plate (6), and one end that pivot (3) passed mounting bracket (2) is equipped with flat pad (9), is equipped with bolt (8) of connecting pivot (3) in the downthehole of flat pad (9). The utility model has the advantages of long service life, reduced production cost, improved production efficiency and good consistency of cut springs.

Description

Spring cutting-off knife assembly

Technical Field

The utility model belongs to the field of spring machines, and particularly relates to a spring cutting knife assembly used on a spring machine.

Background

After the discharge end of the steel wire is bent and formed on a spring machine, the steel wire is cut off by a cutting-off knife assembly, and a complete spring is formed by cutting off the steel wire.

The existing cutting-off knife assembly comprises a mounting frame which is in sliding connection with a frame of a spring machine, a driving mechanism is arranged on the mounting frame, an air cylinder or an oil cylinder is selected by the driving mechanism, a cutting-off knife is arranged on the mounting frame, and a cutting edge is formed at the end part of the cutting-off knife. After the discharge end of the steel wire is bent and formed, the driving mechanism enables the mounting frame to move to one side of the steel wire, and drives the cutting knife to pass through the steel wire to cut off the steel wire. In the continuous use, the cutter cuts off the steel wire at the fixed position of blade, and the blade is wearing and tearing relatively easily, can form the burr at the incision department of steel wire, needs to be changed, and life is shorter, and the change frequency of cutter is higher, has not only increased manufacturing cost, has reduced production efficiency moreover.

Disclosure of utility model

The utility model aims to provide a spring cutoff knife assembly. The utility model has the advantages of long service life, reduced production cost, improved production efficiency and good consistency of cut springs.

The technical scheme of the utility model is as follows: the utility model provides a spring cutting off knife tackle spare, includes the mounting bracket with the frame sliding connection of spring machine, is equipped with actuating mechanism on the mounting bracket, is equipped with the cutting off knife on the mounting bracket, the cutting off knife is the disc, and the periphery of cutting off knife forms annular blade, and the cutting off knife can be dismantled with the mounting bracket and be connected.

In the spring cutting-off knife assembly, the cutting-off knife is located on one side of the mounting frame, the cutting-off knife shaft is provided with a positioning hole in the upward direction, a rotating shaft penetrating through the mounting frame is arranged in the positioning hole, one end of the rotating shaft, far away from the mounting frame, radially extends outwards to form a pressing plate, one end of the rotating shaft, penetrating through the mounting frame, is provided with a flat pad, a bolt for connecting the rotating shaft is arranged in the hole of the flat pad, and the diameter of the outer circle of the flat pad is larger than that of the rotating shaft.

In the spring cutting knife assembly, one end of the positioning hole, far away from the mounting frame, extends radially outwards to form a groove for accommodating the pressing plate, and the depth of the groove is larger than the thickness of the pressing plate.

In the spring cutting knife assembly, the elastic pad is sleeved on the bolt and is positioned between the flat pad and the rail of the bolt.

In the spring cutting knife assembly, a plurality of V-shaped grooves which are distributed circumferentially are formed in the outer circumferential surface of the cutting knife.

Compared with the prior art, the utility model improves the cutting knife and the connecting structure between the cutting knife and the mounting frame on the basis of the prior cutting-off assembly, the improved cutting knife is disc-shaped and provided with the annular cutting edge, when the cutting edge at any position is worn, the steel wire can be continuously cut by using the cutting edge which is not worn by the cutting knife, the diameter of the cutting knife far exceeds the diameter of the steel wire, point contact is formed between the cutting knife and the steel wire, the wearing point formed on the cutting edge is small, the cutting knife only needs to rotate by a small angle to avoid the wearing point, the service life of the cutting knife is very long, even the service life of the whole machine of a spring machine is exceeded, and the production cost is reduced. And adjust cutter rotation angle and compare in changing the cutter again, saved the workman and got the step of getting the material from the warehouse or purchasing from market, only adjusted in the scene and accomplished, saved more time, can improve production efficiency. Through setting up V type groove on the outer peripheral face of cutting off the sword, fix a position the cutting off direction of steel wire, avoid the steel wire beat, make the spring that cuts off bend to the homonymy in the department of cutting off, the uniformity is good. In conclusion, the utility model has the advantages of long service life, reduced production cost and improved production efficiency, and the consistency of cut springs is good.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is an axial schematic view of the cutting blade of the present utility model.

The marks in the drawings are: the device comprises a frame 1, a mounting frame 2, a rotating shaft 3, a cutting knife 4, a cutting edge 5, a pressing plate 6, a groove 7, a bolt 8, a flat pad 9, a spring pad 10, a V-shaped groove 11, a steel wire 12 and an output shaft 13.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.

On the EN-CNC505W type spring machine, from having spring cutter assembly, cutter assembly includes mounting bracket 2, and mounting bracket 2 passes through slide rail slider subassembly and the frame 1 sliding connection of spring machine, and the direction of movement of frame 1 is perpendicular to the direction of movement of steel wire 12, is equipped with actuating mechanism on the mounting bracket 2, and actuating mechanism is cylinder or hydro-cylinder. The cutting knife on the existing spring machine is in a long strip shape and is connected with the mounting frame 2 through screws, and after the cutting knife is cut off for multiple times, the fixed position where the cutting edge is contacted with the steel wire is worn in a punctiform manner, so that the cutting knife needs to be replaced.

Examples. A spring cutoff knife assembly, as shown in fig. 1, improved upon the spring cutoff knife assembly of an EN-CNC505W type spring machine, the improvement comprising:

The cutter 4 has a disc shape, and the outer periphery of the cutter 4 forms an annular cutting edge 5.

The utility model discloses a cutting knife, including frame 1, cutting knife 4, mounting bracket 2, the cutting knife 4 is located the one side that is close to frame 1 of mounting bracket 2, is equipped with the locating hole in the cutting knife 4 axial, is equipped with the pivot 3 that passes mounting bracket 2 in the locating hole, and the radial outside extension of one end that mounting bracket 2 was kept away from to pivot 3 forms clamp plate 6, and the one end that mounting bracket 2 was passed to pivot 3 is equipped with flat pad 9, is equipped with the bolt 8 of connecting pivot 3 in the downthehole of flat pad 9, and the excircle diameter of flat pad 9 is greater than the diameter of pivot 3.

The positioning hole extends outwards in the radial direction away from one end of the mounting frame 2 to form a groove 7 for accommodating the pressing plate 6, and the depth of the groove 7 is larger than the thickness of the pressing plate 6, so that the pressing plate 6 is hidden in the groove 7. After the inner end surface of the cutter 4 is aligned with the end surface of the output shaft 13 of the spring machine output wire 12, the presser 6 does not interfere with the output shaft 13 even if the cutter 4 has a long stroke distance, ensuring safety.

The bolt 8 is sleeved with a spring pad 10, the spring pad 10 is positioned between the flat pad 9 and the rail of the bolt 8, and the spring pad 10 plays a role in preventing the bolt 8 from loosening.

The outer circumferential surface of the cutter 4 is provided with a plurality of V-shaped grooves 11 distributed circumferentially.

When in use, the utility model is characterized in that: when the spring is powered off, the bolt 8 is unscrewed, the cutter 4 is moved and contacts the steel wire 12, the cutter 4 is rotated, the steel wire 12 enters one of the V-shaped grooves 11 and contacts both sides of the V-shaped groove 11, and the bolt 8 is screwed, so that the cutter 4 is fixed on the mounting frame 2 and cannot rotate. After a period of use, the cutting edge 5 at the V-shaped groove 11 currently contacting the wire is worn, and the cutter 4 is rotated by a certain angle according to the above steps, so that the other V-shaped groove 11 is aligned with the wire 12, and the wire 12 is cut by the cutting edge 5 at the other V-shaped groove 11.

The spring machine is correspondingly improved according to the problems in the production process in the actual production process, has a very good practicality although the structure is simple, is suitable for the secondary transformation of the spring machine obtained by purchasing by small and medium factories, and has the practicability due to the simple structure and low transformation cost.

Claims (4)

1. The utility model provides a spring cutting off knife subassembly, includes mounting bracket (2) with frame (1) sliding connection of coiling machine, is equipped with actuating mechanism on mounting bracket (2), is equipped with cutting off knife (4), its characterized in that on mounting bracket (2): the cutting knife (4) is disc-shaped, an annular cutting edge (5) is formed on the periphery of the cutting knife (4), and the cutting knife (4) is detachably connected with the mounting frame (2);

The utility model discloses a cutting knife, including mounting bracket (2), cutting knife (4), locating hole, pivot (3) that pass mounting bracket (2) are equipped with in cutting knife (4) axial, and the one end radial outside extension that mounting bracket (2) was kept away from to pivot (3) forms clamp plate (6), and one end that mounting bracket (2) was passed in pivot (3) is equipped with flat pad (9), is equipped with bolt (8) of connecting pivot (3) in the downthehole of flat pad (9), and the diameter of the excircle of flat pad (9) is greater than the diameter of pivot (3).

2. The spring cutout knife assembly of claim 1 wherein: the locating hole is kept away from the radial outwards extension of one end of mounting bracket (2), forms recess (7) that hold clamp plate (6), and the degree of depth of recess (7) is greater than the thickness of clamp plate (6).

3. The spring cutout knife assembly of claim 1 wherein: the bolt (8) is sleeved with a spring pad (10), and the spring pad (10) is positioned between the flat pad (9) and the rail of the bolt (8).

4. The spring cutout knife assembly of claim 1 wherein: a plurality of V-shaped grooves (11) which are distributed circumferentially are formed in the outer peripheral surface of the cutting knife (4).