KR20220091024A - Metal spring molding equipment - Google Patents

Abstract

The present invention relates to a metal spring forming machine of a spring note, and more specifically, by enabling easy adjustment of the diameter and pitch of the spring with a single forming machine, high productivity is ensured in selectively manufacturing and producing springs that meet the purpose of use It relates to a spring forming machine having a wider application range by remarkably reducing the defect rate of the spring and significantly improving the marketability, and allowing a cylindrical or conical spring to be freely selected and formed.

Description

Spring Knot's metal spring molding machine {Metal spring molding equipment}

The present invention relates to a metal spring forming machine of a spring note, and more specifically, by enabling easy adjustment of the diameter and pitch of the spring with a single forming machine, high productivity is ensured in selectively manufacturing and producing springs that meet the purpose of use It relates to a spring forming machine having a wider application range by remarkably reducing the defect rate of the spring and significantly improving the commercial property, and allowing the cylindrical or conical spring to be freely selected and formed.

Spring notes are manufactured through a spring note manufacturing device, wherein the spring note manufacturing device is a method of binding paper such as a plurality of printed materials or documents, piercing a hole in the paper stacked on one side and connecting a ring to manufacture it will do

As for the above-mentioned ring, a bookbinding method using a metal or synthetic resin spring made of a single ring or a twin ring is widely used. In other words, in order to bind notes, calendars, etc. in the form of booklets, a plurality of binding holes are drilled in the binding area and a single ring or twin ring spring is inserted and coupled thereto so that the single or twin springs are used to fasten the single sheets of notes. binding method.

At this time, in the metal ring, one or two rows of metal springs are fitted into each fastening hole, and each ring is inserted into the binding hole in an open state and pressed. It has the advantage that the spring is fastened straight.

Such a spring note manufacturing apparatus is usually between the punching unit 2 for punching a hole in the paper, the spring forming machine 4 for forming a spring, the punching unit 2 and the spring forming machine 4 as shown in FIG. It includes a coupling part 3 that receives the punched paper and the spring at the same time to couple the spring to the paper.

In particular, the spring forming machine 4 performs a function of winding the supplied filament to form a spiral spring, and cutting the formed spring to a predetermined length and supplying it to the coupling part 3 .

On the other hand, the spring of the spring note should be composed of various diameters according to the standard of the note, the diameter of which is standardized uniformly and is commonly used all over the world.

For example, the spring diameter is divided into 9, 10, 11, 12, 13, 14, 16, 18, 20, 22, and 25 mm, and since these standards are commonly used worldwide, according to these standards,

It is possible to guarantee the commerciality of the manufactured note only when the spring is molded uniformly.

However, there is a problem in that it is very difficult to easily process and produce various types of springs, particularly, springs made of a metal material in a spring forming machine so far.

Registered Patent 10-1951077

The present invention was created to solve the problems in the prior art, and it is possible to easily control the diameter and pitch of the spring with a single molding machine, thereby providing high productivity in selectively manufacturing and producing springs that meet the purpose of use. The purpose of this is to provide a spring forming machine having a wider range of application by guaranteeing, remarkably reducing the defect rate of the spring, greatly improving the commercial property, and allowing the cylindrical or conical spring to be freely selected and formed.

The present invention is a means for achieving the above object, in a spring molding machine comprising a supply unit for supplying a metal filament and a molding unit for molding the filament supplied from the supply unit into a coil shape, wherein the molding unit includes: a cylinder made of a hollow body; a plurality of supports arranged with a predetermined angular phase difference at the front end of the cylinder and having fastening holes formed therein; a forming shaft extending outward from the tip end of the cylinder in a state mounted inside the cylinder and winding the filament supplied from the supply unit to an outer circumferential surface; a plurality of roller assemblies that are fastened to the fastening holes of each of the plurality of supports, are radially disposed around the forming shaft, and guide the filament supplied from the supply unit to the outer circumferential surface of the forming shaft in the form of a coil; and a driving means for rotationally driving the molding shaft, wherein each of the plurality of roller assemblies is configured to enable parallel movement and in-place angle adjustment in the radial direction of the molding shaft on the support.

In addition, each of the plurality of roller assemblies, a forming roller in which a coil-shaped guide groove is recessed in the outer circumferential surface; a roller support bracket rotatably supporting the forming roller and having a slit in communication with the fastening hole formed therethrough; and a fastening bolt screwed to the fastening hole through the fastening hole and the slit.

In addition, the slit is formed in the form of a hole extending long in the radial direction of the forming shaft, and the roller support bracket is configured to move along the longitudinal direction of the slit while supporting the forming roller to adjust the distance from the forming shaft characterized by being

In addition, the forming part is installed outside the front end of at least one of the plurality of roller support brackets so as to be adjacent to the outer circumferential surface of the forming shaft, and guides the spring to a plurality of correction grooves formed along the axial direction in a direction adjacent to the forming shaft. a correction bracket for correcting the coil shape of the spring exiting the forming roller; and a pitch adjusting member installed on the molding shaft and guiding the filament supplied from the supply unit to adjust the winding angle of the filament, wherein the pitch adjusting member is installed on the upper part of the cylinder and has a fastening hole in the vertical direction. a guide block passing through; an adjustment shaft mounted through the guide block in a direction parallel to the axial direction of the molding shaft and installed to be reciprocally movable; a traverse guide formed at the front end of the control shaft to guide the filament supplied from the supply unit; and a fastening bolt screwed to the fastening hole.

In addition, it further includes; a positioning unit that enables the positioning of the molding unit in the vertical and front-rear directions; the molding unit is in a state of being lifted by a certain distance from the base to the upper part, and the positioning unit is installed on the base to support the molding unit A structure, wherein the positioning unit includes: a rail extending in the front-rear direction on the upper surface of the base; a first moving block that is guided in the front-rear direction on the rail and has a guide rod extending upwardly; a second moving block fixed to the guide block of the pitch adjusting member in a state connected to the guide rod and having a screw hole formed in the center; a vertical shaft having a screw thread formed on its outer circumferential surface and screwed into the screw hole and penetrating the second moving block in the vertical direction; a first fixing block fixed to the outside of the guide rod and fixedly supporting the lower end of the vertical shaft; and an actuator installed on the base to move the first moving block in the front-rear direction.

The present invention makes it possible to easily adjust the diameter and pitch of the spring with a single molding machine, thereby ensuring high productivity in selectively manufacturing and producing springs that meet the purpose of use, and significantly reducing the defect rate of the springs to significantly improve the merchantability. In addition, it provides the effect of having a wider range of applications by freely selecting and forming a cylindrical or conical spring.

1 is a view showing the overall configuration of a spring manufacturing apparatus.
2 to 3 are views showing the overall appearance of the spring forming machine according to the present invention.
Figure 4 is a view showing a plane of the spring forming machine.
5 is a view showing an exploded configuration of the roller assembly.
Figure 6 is a view showing the configuration of the support and the roller assembly, a view showing a state in which the roller assembly moves in parallel on the support.
7 is a view schematically illustrating a state in which the molding part is viewed from the tip side in the axial direction;
Figure 8 is a view showing the configuration of the support and the roller assembly, a view showing a state in which the angle of the roller assembly is adjusted in place on the support.
9 is a view schematically showing a plane of a molding part to which a conical molding shaft is applied.
10 is a view conceptually illustrating a process in which the pitch of the spring is adjusted according to the position of the traverse guide.
11 is a diagram conceptually illustrating an exploded configuration of a pitch adjusting member.
12 is a view schematically showing a state in which the molding part is viewed from the rear end side axial direction.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

The metal spring forming machine of the spring note according to the present invention (hereinafter referred to as the spring forming machine 4) may be largely defined as including a supply unit 10 and a forming unit 20 .

First, the supply unit 10 serves to supply the metal filament, and for this purpose, a storage unit (not shown) in which the filament is stored, and a plurality of supply rollers 11 guiding the filament discharged from the storage unit are placed in place. It can be exemplified as including a supply plate 12 for rotatably supporting and a foreign material removal member 13 installed on the upper end of the supply plate 12 to remove foreign substances remaining on the surface of the filament while the filament passes. have.

Accordingly, the filament discharged from the storage unit passes through the foreign material removal member 13 to remove the foreign material on the surface, and is then guided by the supply roller 11 to be continuously supplied to the molding unit 20 side.

Since the supply unit 10 may be implemented in various ways in a line capable of continuously supplying the metal filament, a detailed description thereof will be omitted.

Next, the forming unit 20 serves to receive the filament supplied from the supply unit 10 and mold it into a coil shape.

The spring formed in the coil shape by the forming unit 20 is supplied to the coupling unit 3, and the coupling unit 3 receives the punched paper and the spring at the same time, and combines the spring with the paper to manufacture a spring note. will do

In particular, the forming unit 20 in this embodiment can easily form springs of various diameters, and furthermore, in addition to the uniform cylindrical springs, conical springs that gradually increase in diameter as needed are also without unreasonableness. It has structural features that can be molded.

More specifically, as shown in FIGS. 2 to 5 , the forming part 20 is a cylinder 21 made of a hollow body, arranged with a predetermined angular phase difference at the front end of the cylinder 21, and a fastening hole 22a is formed. A plurality of supports 22 to be formed, a molding shaft 23 extending outward from the tip of the cylinder 21 in a state mounted inside the cylinder 21 and winding the filament supplied from the supply unit 10 to the outer circumferential surface; It is fastened to the fastening holes 22a of each of the plurality of supports 22, is radially disposed around the forming shaft 23, and the filament supplied from the supply unit 10 is supplied in a coil form to the outer circumferential surface of the forming shaft 23. It may be exemplified as including a plurality of roller assemblies 24 for guiding and a driving means 25 for rotationally driving the molding shaft 23 .

The molding shaft 23 is rotatably supported in place within the cylinder 21 , and may be axially coupled with the pulley 21a provided at the rear end of the cylinder 21 to rotate forward and reverse according to the rotation of the pulley 21a.

A molding shaft 23 of various diameters and shapes may be detachably mounted to the cylinder 21 .

The driving means 25 for providing rotational power of the molding shaft 23 includes a driving motor 24a installed below the base 28 to be described later as shown in FIG. 12 and an output terminal of the driving motor 24a and It may be exemplified as a belt 25b connecting the pulley 21a. That is, when the driving motor 24a is driven, the belt 25b rotates the pulley 21a, and the forming shaft 23 is rotated by the rotated pulley 21a.

The driving means 25 may be variously implemented in a line capable of rotating the molding shaft 23 within the cylinder 21 , and thus detailed description thereof will be omitted.

When the molding shaft 23 rotates, the filament supplied from the supply unit 10 may be continuously wound around the outer circumferential surface of the molding shaft 23 and formed toward the tip of the molding shaft 23 .

The plurality of supports 22 are arranged in a circle at the front end of the cylinder 21 with three support units having a phase difference of approximately 120° to support the roller assembly 24 . The plurality of supports 22 may be provided integrally with the cylinder 21 or may be fixedly mounted to the cylinder 21 using separate bolts or the like.

Accordingly, the plurality of roller assemblies 24 may also be arranged with a phase difference of 120° with the molding shaft 23 at the center.

The roller assembly 24 is positioned close to the forming shaft 23 to guide the filament so that the filament wound around the outer circumferential surface can be formed into a coil having a uniform pitch.

On the other hand, the diameter of the molded spring is determined by the diameter of the forming shaft 23. If the diameter of the forming shaft 23 is changed, the relative position of the roller assembly 24 located close to the outer circumferential surface of the forming shaft 23 is also appropriately A flexible structure is required.

That is, in this embodiment, when the molding shaft 23 previously mounted on the cylinder 21 is replaced with the molding shaft 23 having a different diameter, the plurality of roller assemblies ( 24) Each of them may be moved in parallel toward the radial direction of the forming shaft 23 on the support 22 .

To this end, the roller assembly 24 rotatably supports the forming roller 24a in which the coil-shaped guide groove 24d is recessed in the outer circumferential surface, and the forming roller 24a, as shown in FIG. A roller support bracket 24b through which a slit 24e communicating with the fastening hole 22a is formed, and a fastening bolt 24c screwed into the fastening hole 22a through the fastening hole 22a and the slit 24e. ) may be exemplified as including.

The forming roller 24a may be in contact with the outer circumferential surface of the forming shaft 23 while being rotationally supported by the roller support bracket 24b. Accordingly, the forming roller 24a rotates in the opposite direction when the forming shaft 23 rotates, and the filament wound on the forming shaft 23 is a guide groove 24d in the form of a coil formed around the forming shaft 23. Guided to the coil is continuously formed in the form of a predetermined pitch is wound around the outer peripheral surface of the forming shaft (23).

At this time, the slit 24e formed in the roller support bracket 24b is in the form of a hole extending long in the radial direction of the forming shaft 23, and the slit 24b is supported while the forming roller 24a is supported. It is configured to move along the longitudinal direction of (24e) to adjust the distance to the molding shaft (23).

That is, as shown in FIGS. 6 to 7, parallel movement of the roller assembly 24 itself is possible on the support 22, and in particular, in this process, the forming roller 24a is maintained parallel to the forming shaft 23. Therefore, it is possible to easily mold springs having various diameters by adjusting the position of the roller assembly 24 according to the replacement of the molding shaft 23 having a different diameter.

The spring forming machine 4 in this embodiment can form springs having different diameters, and can also form conical springs if necessary. (23) is applied, and when the axis of the forming roller 24a is adjusted in parallel to the forming axis 23, the pre-setting for spring forming is completed.

On the other hand, in the case of forming a conical spring, at least the conical forming shaft 23 must be used. 23) and mutual rotation of the forming roller 24a may be permitted.

Accordingly, as shown in FIG. 8 , the roller support bracket 24b can be rotated at a certain angle based on the fastening bolt 24c, so that the roller assembly 24 itself can adjust the angle in place on the support 22 . is composed

Therefore, since the alignment angle of the forming roller 24a can be matched to the cone angle of the conical forming shaft 23, the forming roller 24a is disposed close to the outer peripheral surface of the conical forming shaft 23 by a certain distance, and the forming shaft 23 ) It is possible to guide the filament wound around the outer circumferential surface in the form of a coil without unreasonableness.

On the other hand, the molding part 20 is installed outside the front end of at least one of the plurality of roller support brackets 24b so as to be adjacent to the outer circumferential surface of the molding shaft 23 and is adjacent to the molding shaft 23 in the axial direction. It may further include a correction bracket 26 for correcting the coil shape of the spring exiting the forming roller 24a by guiding the spring to a plurality of correction grooves 26a formed along the .

The filament is wound around the outer circumferential surface of the forming shaft 23 and moves along the coil-shaped guide groove 24d and is formed in the form of a spring. In addition, even if it exits the forming roller 24a and is formed in the form of a coil, due to the restoration properties of the metal, the coil form may be partially loosened.

Accordingly, by allowing the spring that has completely passed through the forming roller 24a to continuously pass through the correction groove 26a of the correction bracket 26, the reverse movement of the filament is prevented, and, at the same time, the spring is suppressed from being restored to a linear filament. Therefore, the defect rate at the time of spring forming can be further reduced.

The correction bracket 26 passes through the forming roller 24a and acts only on the spring having a coil shape to some extent to prevent excessive contact with the spring, and thus, in a line that can minimize the external force applied to the spring, the spring It has a structure to correct

If the correction bracket 26 simultaneously acts while the filament passes through the forming roller 24a, it interferes with the movement of the filament, so that the spring cannot be uniformly wound, or a scratch is applied to the outside of the filament. It causes some problems in the molding process of

On the other hand, the spring forming machine 4 in this embodiment has a structure capable of forming a spring by adjusting the pitch p (interval between unit coils) of the spring.

To this end, the forming part 20 is installed on the upper part of the forming shaft 23 and includes a pitch adjusting member 27 for guiding the filament supplied from the supply unit 10 to adjust the winding angle (a) of the filament.

As an example, the pitch adjusting member 27 is installed on the cylinder 21 as shown in FIGS. 3 and 11 , and a guide block 27a through which the tightening hole 27e is penetrated in the vertical direction, the molding shaft 23 . An adjustment shaft (27b) installed to pass through the guide block (27a) in a direction parallel to the axial direction of may be exemplified as including a traverse guide (27c) guided and a fastening bolt (27d) screwed to the fastening hole (27e).

As the adjustment shaft 27b is moved in the direction of the tip of the molding shaft 23, the traverse guide 27c moves closer to the tip of the molding shaft 23 in conjunction therewith, as shown in FIG. The guide 27c adjusts the incident direction of the filament, so that the winding angle (a) of the spring decreases and the pitch (p) of the spring decreases. As shown in FIG. 10B with a similar concept, as the traverse guide 27c is positioned closer to the cylinder 21, the winding angle a of the spring increases and the pitch p of the spring increases.

When the position of the traverse guide 27c is determined, when the tightening bolt 27d is tightened to fix the tightening bolt 27d to the adjustment shaft 27b in a wedge shape, the movement of the adjustment shaft 27b is restricted while the movement of the traverse guide 27c is limited. The position may be fixed.

On the other hand, the punched paper is always supplied at the same position to be seated and aligned in the coupling part 3, and if the spring diameter is changed, it is necessary to finely adjust the supply position of the spring to be supplied to the coupling part 3 side there is

That is, when the central axis position of the spring is moved eccentrically according to the thickness of the paper, the diameter of the spring, etc. and supplied to the coupling part 3 , the spring can be coupled to the position of the paper aligned to be seated on the coupling part 3 . .

Accordingly, the present embodiment may further include a positioning unit 30 that enables positioning of the molding unit 20 itself in the vertical and front-rear directions.

At this time, the molded part 20 is in a state of being lifted by a certain distance upward from the base 28 , and the positioning part 30 is installed on the base 28 to support the molded part 20 .

As shown in FIGS. 3 and 12, the positioning unit 30 is guided in the front-rear direction on the rail 31 extending in the front-rear direction on the upper surface of the base 28, the rail 31 is guided in the front-rear direction, and is guided upward. The first moving block 32 from which the rod 37 is extended is fixedly installed to the guide block 27a of the pitch adjusting member 27 in a state connected to the guide rod 37, and a screw hole 38 in the center. The second moving block 33 is formed, a screw thread is formed on the outer circumferential surface, is screwed into the screw hole 38, and a vertical shaft 34 passing through the second moving block 33 in the vertical direction, the guide rod ( 37) is fixed to the outside and installed on the first fixing block 35 and the base 28 for fixing and supporting the lower end of the vertical shaft 34 to move the first moving block 32 in the front-rear direction ( 36) may be exemplified.

Accordingly, when the actuator 36 moves the first moving block 32, the forming part 20 itself can reciprocate in the front-rear direction in conjunction with this, and, in addition, by rotating the vertical axis 34, the longitudinal direction of the regular axis Accordingly, the second moving block 33 is vertically adjusted, and thus, the molding unit 20 is interlocked to provide a structure in which front and rear and vertical position adjustment is possible.

Accordingly, it is possible to finely adjust the supply position of the spring to be supplied to the coupling portion 3 according to the situation.

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

10: supply
20: molding part
30: position adjustment unit
21: cylinder
22: support
23: molding shaft
24: roller assembly

Claims (5)

In the spring forming machine comprising a supply unit for supplying a metal filament and a molding unit for molding the filament supplied from the supply unit into a coil shape,
The molding part,
a cylinder made of a hollow body;
a plurality of supports arranged with a predetermined angular phase difference at the front end of the cylinder and having fastening holes formed therein;
a forming shaft extending outward from the tip of the cylinder in a state mounted inside the cylinder and winding the filament supplied from the supply unit to an outer circumferential surface;
a plurality of roller assemblies fastened to the fastening holes of each of the plurality of supports and disposed in a radial shape around the forming shaft and guiding the filament supplied from the supply unit to the outer circumferential surface of the forming shaft in the form of a coil; and
Including; driving means for rotationally driving the molding shaft;
Each of the plurality of roller assemblies is a metal spring forming machine of a spring note, characterized in that it is configured to enable parallel movement and in-place angle adjustment in the radial direction of the forming shaft on the support. The method according to claim 1,
Each of the plurality of roller assemblies,
a forming roller in which a coil-shaped guide groove is recessed in an outer circumferential surface;
a roller support bracket rotatably supporting the forming roller and having a slit in communication with the fastening hole formed therethrough; and
A metal spring forming machine of a spring note comprising a; a fastening bolt screwed to the fastening hole through the fastening hole and the slit. 3. The method according to claim 2,
The slit is made in the form of a hole extending long in the radial direction of the forming shaft, and the roller support bracket is configured to move along the longitudinal direction of the slit while supporting the forming roller to adjust the distance from the forming shaft. A metal spring forming machine with a spring knot characterized by it. 3. The method according to claim 2,
The molding part,
A spring which is installed outside the tip of at least one of the plurality of roller support brackets so as to be adjacent to the outer circumferential surface of the forming shaft and guides the spring to a plurality of correction grooves formed along the axial direction in a direction adjacent to the forming shaft to exit the forming roller correction bracket to correct the shape of the coil; and
It further includes; a pitch adjusting member installed on the upper part of the molding shaft to guide the filament supplied from the supply unit to adjust the winding angle of the filament,
The pitch adjusting member,
a guide block installed on the upper part of the cylinder and having a fastening hole penetrated in the vertical direction;
an adjustment shaft mounted through the guide block in a direction parallel to the axial direction of the molding shaft and installed to be reciprocally movable;
a traverse guide formed at the tip of the control shaft and guided by the filament supplied from the supply unit; and
A metal spring forming machine of a spring note comprising a; a fastening bolt screwed to the fastening hole. 5. The method of claim 4,
It further includes; a positioning unit for enabling the positioning of the molding unit in the vertical and front-rear directions;
The molded part is in a state of being lifted by a certain distance from the base to the upper part, and the positioning part is installed on the base to support the molded part,
The positioning unit,
a rail extending in the front-rear direction on the upper surface of the base;
a first moving block that is guided in the front-rear direction on the rail and has a guide rod extending upwardly;
a second moving block fixed to the guide block of the pitch adjusting member in a state connected to the guide rod and having a screw hole formed in the center;
a vertical shaft having a screw thread formed on its outer circumferential surface and screwed into the screw hole and penetrating the second moving block in the vertical direction;
a first fixing block fixed to the outside of the guide rod and fixedly supporting the lower end of the vertical shaft; and
A metal spring forming machine of a spring note comprising a; an actuator installed on the base to move the first moving block in the front-rear direction.

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