KR102398051B1 - Press cutting equipment for suture - Google Patents

Abstract

The present invention relates to a suture press molding apparatus for molding a barb part on the outer peripheral surface of a surgical suture used for suturing human muscles or skin, etc., in surgical suture operations for humans or animals, particularly plastic surgery, and more specifically By including a second punch that forms a barb part on one or both sides of the outer circumferential surface of the wire by pressing and cutting the circular wire in a press method, it provides manufacturing cost reduction and productivity improvement, and at the same time provides a blade on the inner surface of the second punch for forming the barb part An additional protrusion is formed so that the rising and falling of the second punch is guided while the guide part, which is smaller in left and right width than the blade part, is inserted into the lower mold, so that when the second punch is cut and then raised and returned, a back heel shape for the side end of the suture It relates to a press-molding apparatus for sutures that can prevent this from occurring.

Description

Press forming device for sutures {PRESS CUTTING EQUIPMENT FOR SUTURE}

The present invention relates to a suture press molding apparatus for molding a barb part on the outer peripheral surface of a surgical suture used for suturing human muscles or skin, etc., in surgical suture operations for humans or animals, particularly plastic surgery, and more specifically The circular wire is compressed and cut in a press method to reduce manufacturing cost and improve productivity by including a punch that forms a barb on one or both sides of the outer circumferential surface of the wire, and at the same time, the blade protrudes on the inner surface of the second punch for forming the barb Formed, as the guide part, which has a smaller left and right width than the blade part, is inserted into the lower mold, the rising and falling of the second punch is guided, so that when the second punch is cut and then raised and returned, a back heel shape is generated for the side end of the suture. It relates to a press forming apparatus for sutures that can be prevented from doing so.

In general, when sutures are performed using general sutures (wire, thread) in suturing surgery, especially in plastic surgery, the effect of the cosmetic surgery is halved, and the skin tissue cannot be fixed, that is, it cannot be held, so there is a problem that the appearance after surgery is not good.

In particular, in recent years, as interest in maintaining a youthful appearance or preventing skin aging increases, many other methods (cosmetics, massage, etc.) are being used, but the effect cannot be expected directly, so many people choose to undergo skin wrinkle removal surgery. are receiving.

Accordingly, in place of the surgical suture (wire) that has been conventionally used in conventional suture surgery, particularly in wrinkle removal plastic surgery, a barb portion protruding in one direction is provided on the outer circumferential surface of the suture, so that the suture itself not only fixes and maintains the skin tissue, etc., Many techniques for sutures that can easily remove wrinkles by pulling them have been proposed.

As a prior art related to such a surgical suture, there is Republic of Korea Patent Publication No. 10-2005-0108494 (2005.11.17) "Operating room for plastic surgery having protrusions",

The present invention relates to an operating room for plastic surgery used for wrinkle removal surgery, etc., and more particularly, by forming a cone-shaped protrusion on the surface of a thread and making the protrusion inclined in a predetermined direction to increase the surgical effect, and furthermore, the conical shape of the thread The protrusion is characterized in that it is formed to be sharply inclined toward both ends with the central reference line as the center in the longitudinal direction of the thread having a certain length.

In order to automatically form and mold the projections (hereinafter collectively referred to as barbs) on the outer peripheral surface of the operating room (hereinafter referred to as sutures) as in the above invention, the structure and operation of the manufacturing apparatus must be made very precisely and minutely.

That is, the surgical suture has a very thin thickness, unlike the general thread, and therefore, in order to form the fine barbs with a uniform height and thickness on the thin suture, the molding operation must be performed very precisely. Since the molding device used for molding has poor molding precision, in the case of a fine suture, the operator does not use an automated molding device but manually forms and produces the barb part.

In order to solve the above problems, there is Republic of Korea Patent Publication No. 10-2012-0022360 (2012.03.12) "A device for manufacturing a surgical suture and a suture manufactured by the device" (hereinafter referred to as the prior art),

The suture manufacturing apparatus according to the prior art is an automated equipment capable of forming a helical barb on the surface of the resin in the process of molding the resin by rotating the extrusion mold having the molding blade formed on the main body of the extrusion machine for molding the suture.

However, in the suture manufacturing apparatus according to the prior art, the extrusion machine itself is very expensive, and it is very expensive to manufacture by installing a separate extrusion mold in such an expensive extrusion machine so that it is axially rotated, and the burden is large,

In addition, when a rotating extrusion mold is installed in the nozzle part of an apparatus for extrusion molding a resin heated to high temperature, it is difficult to secure watertightness between the nozzle part and the extrusion mold. It is a technology that is difficult to commercialize due to its lack of practicality due to problems with unit price competitiveness and water tightness.

Moreover, when extruding a very thin surgical suture and molding the barb part using the molding blade of the extrusion mold, considering the fine thickness and height of the barb part, there is a risk of breakage and damage to the barb part before the resin is cooled during extrusion. It is large, and there is a problem that the molding blade is easy to close during the extrusion operation,

In particular, excellent effects can be expected as sutures when the protrusion height, angle, length, and spacing of each barb are precisely molded to the same level without error. There is a problem with this falling.

Accordingly, a suture forming apparatus for molding the barb by a press compression method using a punch has been developed as in Patent Publication No. 10-2020-0000816.

In the above publication, a stripper for guiding the punch for cutting is added to the upper mold, and the stripper is configured to hold the suture while the punch moves upward after cutting down.

However, the disclosed patent discloses that the stripper itself has a structure capable of ascending and descending, and when the punch rises and returns, the side end of the suture is lifted by frictional resistance to the suture (back heel), and a burr occurs in the molding site or the barb part Damage occurs frequently, and in particular, as the thickness of the suture itself becomes very thin, there is a problem such as frequent breakage of the suture upon rising and returning after cutting the punch.

Accordingly, there is a need for a technology capable of reducing manufacturing cost and improving productivity while enabling precise and meticulous molding, such as molding of barbs through conventional manual labor.

Accordingly, the present invention has been devised to solve the above problems,

In order to precisely produce all of the barbs on the outer circumferential surface of the wire to the same standard, reduce manufacturing cost and improve productivity, the circular wire is compressed and cut in a press method, and the barb sections are processed and formed on one or both sides of the outer circumferential surface of the wire. It can be processed by changing the protrusion direction of the barb part in various ways according to the need,

In particular, the purpose of providing a suture press molding device that can improve the quality and productivity of the suture by not causing a back heel phenomenon to the side end of the suture when the punch is raised and returned after cutting and molding. .

In order to achieve the above object, the suture press forming apparatus according to the present invention,

In the suture press forming apparatus for producing a suture having a plurality of barbs protruding at regular intervals on the outer circumferential surface of the wire,

a supply unit for supplying a wire;

a conveying means for conveying the wire in the longitudinal direction;

a discharge unit for collecting and discharging the suture in which the barb is formed;

It is installed between the supply unit and the discharge unit,

The lower mold on which the wire being transferred in the longitudinal direction is seated,

an upper mold elevating from the upper side of the lower mold;

A press unit including a second punch for forming the barb by cutting one or both ends of the flattened wire in a press manner when the upper mold is lowered;

The lower mold includes a guide hole through which the second punch is inserted to guide the elevation of the second punch,

The second punch is inserted into the guide hole and ascends and descends, but it is characterized in that it includes a lower guide portion inserted into the guide hole, and a blade portion protruding inward from the upper end of the guide portion to cut and shape the barb of the suture.

And in the suture press molding device,

The lower mold is provided in the longitudinal direction along the center of the guide hole and characterized in that it includes a support part having the same shape as the suture.

Further, the suture press molding device,

It is characterized in that it includes a second clamp for fixing and releasing the wire by a gripping operation, which is fixed to the front and rear end sides of the press unit (PU) to hold and fix the front and rear ends of the wire during barb molding.

In addition, in the suture press molding device,

The discharge unit includes a discharge reel on which the suture is wound,

It is installed between the press unit (PU) and the discharge reel, it characterized in that it comprises a transfer tunnel having a transfer groove for guiding the horizontal movement of the suture through which the suture is inserted.

The suture press molding apparatus according to the present invention,

After pressing the circular wire in a press method, a part of the outer circumferential surface is cut to process the barb, so that all the barbs can be precisely molded to the same standard,

In particular, the second punch for cutting the wire consists of a lower guide part and an upper blade part having different thicknesses on the left and right, so that the lower guide part with a small thickness does not contact the side end of the suture when the second punch rises and returns after cutting and molding, It is possible to prevent the occurrence of burrs, damage to the barb, and cutting of the suture due to the back heel phenomenon of the suture. , as the second punch is directly guided to the lower mold, it is possible to prevent damage to the mold due to the wire being pressed during mold closing,

It is possible to prevent wire breakage or poor thickness during processing by forming barbs on one or both sides of the flat compressed wire.

The cutting scrap generated after cutting is quickly separated and discharged in a suction method to prevent cutting burrs from occurring in the suture, and at the same time, foreign substances are attached to the outer surface of the produced suture by removing static electricity from the processed suture. It prevents the suture from becoming

It can be produced by cutting the suture with a dual discharge structure or by winding it in a reel form.

When the suture is wound on the reel and discharged, it is possible to prevent the suture from being twisted and damaging the barb,

By flattening the wire introduced into the press unit or by flattening it by flattening it, it is possible to provide an improvement in the precision of barb molding,

It has the effect of reducing manufacturing cost and improving productivity by reducing the defect rate that occurs during processing.

1 is a plan view showing a suture molded by the present invention.
Figure 2 is a conceptual diagram schematically showing a press forming apparatus for sutures according to the present invention.
3 and 4 are perspective views of the suture press forming apparatus according to the present invention.
Figure 5 is a side view of the suture press molding apparatus according to the present invention.
Figure 6 is an enlarged perspective view of the main part of the suture press molding apparatus according to the present invention.
7 and 8 are cross-sectional views showing the press unit of the suture press forming apparatus according to the present invention.
9 is a plan view showing a lower mold and a support plate according to the present invention.
10 is a perspective view and a side view of a main part of a press unit according to the present invention.
11 is an enlarged perspective view of the main part of the lower mold according to the present invention.
12 and 13 are enlarged perspective views of the main part of the press forming apparatus for sutures according to the present invention.
14 is a perspective view of a transport tunnel member according to the present invention.
Figure 15 is a front view for explaining the wire fixing means according to the present invention.

Since the present invention can have various changes and can have various forms, implementation examples (態樣, aspects) (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In each drawing, the same reference sign, particularly the number of the tens and one digit, or the reference numerals having the same tens, one, and alphabet, indicates a member having the same or similar function, and, unless otherwise specified, each The member indicated by the reference sign may be regarded as a member conforming to these standards.

In addition, in each drawing, components are expressed in exaggeratedly large (or thick), small (or thin) or simplified in size or thickness in consideration of convenience of understanding, but the protection scope of the present invention is limited by this. it shouldn't be

The terminology used herein is only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

In the present application, terms such as comprises or consists of are intended to designate the existence of a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It is to be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

~1~, ~2~, etc. described in the present specification are only to be referred to to distinguish that they are different components, and are not limited to the order of manufacture, and their names in the detailed description and claims of the invention are may not match.

In describing the press forming apparatus for sutures according to the present invention, for convenience, if an approximate direction standard that is not strict is specified with reference to FIG. In the detailed description and claims of the invention related to other drawings, unless otherwise specified, the direction is specified and described according to this standard.

Hereinafter, a suture press forming apparatus according to the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, the press forming apparatus for sutures according to the present invention presses barbs (B) of various shapes on one or both sides of the outer circumferential surface of the wire (W) being transported in the longitudinal direction in a press manner. As a post-cutting device,

3 to 13, the supply unit (SU) for supplying the wire (W) before processing, the transfer means for transporting the wire (W) in the longitudinal direction, the barb (B) is molded suture ( Discharge unit (EU) for discharging S), a press working unit (PU) that is installed between the supply unit (SU) and the discharge unit (EU) to press-form the barb part (B) on the wire (W), the barb part (B) including a flattening means for flattening the wire (W) before molding flat,

The flattening means may include the first punch 30A or the press-working unit PU provided in the upper mold 20 and the flattening unit 60 installed separately or both.

The supply unit (SU) and the discharge unit (EU) are connected to the wire (W) and the suture (S) before cutting after processing (the wire (W) and the suture (S) according to the presence or absence of a barb (B) for convenience As a distinction, both ends of the wire and the suture are actually connected with a single thread in the step before cutting.), the reel rotation of the supply unit (SU) and/or the discharge unit (EU) are connected in conjunction with the operation of the transport means ), while the gripper 91 moves forward and backward (or rotates the reel), the wire W passes through the press working unit PU to supply the wire W, and then process and discharge the suture S.

First, a press working unit (PU) according to the present invention will be described with reference to FIGS. 7 to 11 .

The press working unit (PU) is largely composed of a lower mold 10 fixedly installed on the bed, an upper mold 20 elevating and lowering from the upper mold 10 to perform mold opening and closing, and the upper mold 20. It includes a first punch (30A) for flattening the circular wire (W) by elevating in the second punch (30B) for cutting and molding the barb portion (B) on the flattened wire (WS).

Specifically, the lower mold 10 is a flattened wire (W) being transported in the longitudinal direction is seated so that the flattened wire (W) can be cut in the shape of a suture (S) having a barb (B). A die supporting the wire WS is inserted, and seating blocks 11A and 11B for supporting the wire W to be pressed are coupled to the mold base, and the upper surface of the seating blocks 11A and 11B A seating groove 12 concave downward so that the wire W is inserted is provided in the longitudinal direction of the wire W.

At this time, the seating groove 12 is concavely formed to have a lower left and right width and a lower height than the diameter of the circular wire W, which is in the state before processing, so that the descending first punch 30A flattens the circular wire W. After compression, the descending second punch 30B cuts one or both ends of the flattened wire WS to form the barb portion B.

That is, during press processing for forming the barb portion (B), the circular wire (W) entering the press unit (PU) is flattened as it passes through the first punch (30A), and thus the flattened wire (WS) While passing through the second punch (30B), cutting and molding of the barb portion (B) is made.

In addition, the second punch 30B is inserted into the seating block 11B of the lower mold 10 and a guide hole 13 for guiding the raising and lowering of the second punch 30B is provided. It is provided in the longitudinal direction along the center and the support portion 14 made of the same shape as the suture S is coupled.

The support portion 14 is formed in the same shape as the barb portion B of the suture S, so that the second punch 30B inserted into the guide hole 13 is supported by the support portion 14 . The barb portion B is formed by cutting one or both ends of the flattened wire WS by a press method.

The guide hole 13 has a discharge hole 13a connected to a lower portion connected to a suction means (not shown), so that the cutting scrap is adsorbed and discharged.

To this end, the lower mold 10 is provided with a discharge hole 13a for integrating the guide holes 13 on both sides of the support unit 14 into one flow path, and the discharge unit 14 is a suction connection part connected to the outside of the mold. In communication with the suction means (not shown) such as a compressor is connected.

The lower mold 10 is subjected to negative pressure for vacuum suction on the discharge hole 13a by the suction means, so that the cutting scrap cut by the second punch 30B is discharged through the lower discharge hole (13) of the guide hole (13). 13a), it is adsorbed, dropped, and discharged to the outside.

Furthermore, the lower mold 10 includes a guider 15 for guiding the transfer of the suture S after the barb portion B is molded and preventing the suture S from departing upward from the lower mold 10. do.

The guider 15 is provided on the front side and/or the rear side (based on the wire length direction) of the seating blocks 11A and 11B, and when the second punch 30B rises, the suture S is attached and goes up. By preventing separation from the seating groove 12, it is coupled to the upper surface of the lower mold 10 in a direction orthogonal to the seating groove 12 to form a kind of tunnel having the same groove shape as the seating groove 12. .

Next, the upper mold 20 is installed up and down from the upper side of the lower mold 10, and when the upper mold 20 is lowered, the flattened wire WS placed on the seating part 12 of the lower mold 10. and a punch for cutting one or both ends.

Specifically, the upper mold 20 is a barb portion by partially cutting one end or both ends of the first punch 30A and the flattened wire WS in a press method to flatten the circular wire W when descending. (B) includes a second punch (30A) for molding.

In addition, the upper mold 20 further includes a support plate 21 coupled to the lower surface of the mold base to be elevating and lowering separately from the upper mold,

The support plate 21 includes an elevating hole through which the first punch 30A penetrates up and down to elevate, and the second punch 30B is coupled to the support plate with respect to the upper mold 10 . (21) is coupled to elevate separately.

When the upper mold 20 is lowered, the support plate 21 allows the first and second punches 30A and 30B to be lowered together, and then the first punch 30A is placed on the upper surface of the lower mold 10. In the supported state, the support plate 21 further lowers the second punch 30B, so that the barb portion B is formed.

And the first punch 30A and the second punch 30B are coupled through the support plate 21 up and down, respectively, and when the upper mold 20 is lowered, the first punch 30A is the lower mold 10 ) flattened by flattening a part of the rear end of the circular wire W that entered, and the second punch 30B is a part of one or both ends of the wire WS flattened by the first punch 30A. The barb portion (B) is formed by cutting by a press method.

At this time, the first punch (30A) is flattened by pressing the wire (W) in a general block shape,

The second punch 30B is raised and lowered to be inserted into the guide hole 13, but protrudes inward from the upper end of the lower guide portion 30b inserted into the guide hole, and the guide portion 30b, and a suture (S) It includes a blade portion (30a) for cutting and molding the barb portion (B) of the.

The guide portion 30b of the second punch 30B has a rectangular prism shape, and has a left and right thickness to be spaced apart from the seating groove 12 by a predetermined distance while being in close contact with the outer end of the guide hole 13, such a guide The blade portion 30a is formed to protrude by a predetermined height at the upper end of the inner surface of the portion 30b, and the cross-sectional shape of the blade portion 30a may vary depending on the shape of the barb portion (B) of the suture (S). there is.

That is, for example, as in FIG. 1 , when both side barbs (B) are in the shape of an arrow, in accordance with the interval between the barbs (B), the blade section (30a) is adjacent to the long side and cross section of each barb (B). It has the shape of the rest of the parts that connect it.

At this time, the inner surface of the second punch (30B) may be formed in a step structure of one or more steps between the guide portion (30b) and the blade portion (30a).

This press unit (PU) is spaced apart a predetermined distance in the longitudinal direction of the wire (W) a pair of front and rear are installed.

Through this, it is possible to simultaneously process the barb part (B) in a pair of front and rear in a certain length section of the wire (W), and the processed suture (S) is a barb part (B) by folding the middle part between the barb parts (B). ) can be used as overlapping double sutures.

Of course, by adjusting the processing interval of the barbs (B) with only one press unit (PU), it may be suitable for double sutures, but in this case, the spacing of the barbs (B) of the double sutures and the Since the spacing between the barbs (B) does not match each other, the operation control of the conveying means is complicated, it is possible to improve the operation stability and productivity through a pair of press units (PU).

Then, as shown in FIGS. 2 and 6, the supply unit SU is sequentially installed between the supply unit 40 where the wire W waits, and the supply unit 40 and the press unit PU, A tension control unit 50 that allows the wire W to be transferred from the supply unit 40 in a state in which tension is maintained, and a flattening unit for flattening the wire W before it is supplied to the press unit PU by flattening it ( 60).

The supply unit 40 includes a reel shaft 41 on which a supply reel 41A on which a wire W is wound is mounted, and the reel shaft 41 has both left and right sides of the supply reel for positioning and fixing the supply reel. A mounting plate 42 for pressing is provided.

The reel shaft 41 is rotatably provided by the servo motor 43, so that the tension control unit 50 and the servo motor 43 are interlocked to release the wire W from the supply reel 41A and transfer it.

In addition, the supply unit 40 is installed to be movable from side to side on the bed through a cylinder, etc., so that the position at which the wire W is unwound can be adjusted in the case of a drum type supply reel having a width greater than a predetermined width left and right.

The tension control unit 50 is disposed between a pair of guide rollers 51 for guiding the wire W unwound from the supply reel to the flattening unit 60, and the guide rollers 51 in an up and down zigzag form to ascend and descend. The drop includes a tension roller (52).

The tension roller 52 pulls and supports the wire W in the opposite direction of the fixed guide roller 51 so that the wire W maintains a predetermined tension or more, that is, it is released in a taut state to wait after supply. .

At this time, the tension control unit 50 further includes a separation prevention rod 53 installed at the rear end of the guide roller 51 and the tension roller 52 to prevent separation of the wire (W).

The separation prevention rod 53 is installed in a pair at a predetermined interval from side to side, and the wire W is passed between the separation prevention rods 53, and a drum-type supply reel 41A with a wide left and right width is formed. Even if used, the wire (W) transferred to the tension control unit 50 is restricted to pass only through the area between the separation prevention rods (53), so that the wire (W) is separated from the guide roller (51) prevent.

The flattening unit 60 further includes a support block 61 for supporting the lower surface of the wire W, and a pressing roller 62 for flattening the wire W on the support block 61 by pressing the lower side. .

In this case, the present invention may include any one or both of the flattening part 60 and the first punch 30A.

That is, the first punch 30A is provided only in the upper mold 20 without the flattening part 60, and the first punch 30A presses the wire W input into the mold to flatten it,

Or, the first punch 30A is omitted from the upper mold 20 and only the flattening part is provided, and the flattening part 60 presses the wire W before being put into the mold to flatten it,

Alternatively, both of the flattening unit 60 and the first punch 30A are provided, so that the wire W before and after inserting the mold can be pressed twice to flatten it, and the flattening unit 60 and the first punch 30A are When all are provided, the flattening unit 60 serves to press and press the wire (W) before the first punch (30A).

A fixed roller 63 for horizontally maintaining the wire W between the guide roller 51 and the first clamp 70A is provided on the front and rear ends of the pressing roller 62, and the pressing roller 62 is a cylinder It operates to descend to a lower height than the fixed rollers 63 through (64), and press-bonds the circular wire (W) passing through the support block 61 in a flat manner.

Next, as shown in FIGS. 1 and 12 , the transfer means TM fixes and releases the wire W by a gripping operation, and the wire W between each unit SU (PU) (EU). ) is provided to move forward and backward in the longitudinal direction of the first clamp 70A for forward conveying the wire W, and the wire (W) when fixed to the front and rear ends of the press unit (PU) to form the barb (B) It includes a second clamp (70B) for holding and fixing the front and rear ends of the.

The first and second clamps 70A and 70B have a support block 71 on which the wire W is supported on the upper side, and operate vertically on the upper portion of the support block 71 to fix the wire W and It is composed of a pressing block 72 to release the fixing, and in the drawing, the embodiment in which the pressing block 72 is hinged to the support block 71 so that the pressing block 72 moves through a seesaw movement to perform a gripping operation is representative Although shown as, a method in which the pressing block 72 directly raises and lowers by the cylinder is also possible.

These first and second clamps (70A) and (70B) have the same configuration in that they fix or release the wire (W) by a gripping operation of the wire (W), but the first clamp (70A) of the wire (W) On the other hand, the second clamp (70B) is different in that it is fixed and installed without moving at the front and rear end sides of the press unit (PU), and accordingly, the first and second clamps are installed to be movable forward and backward in the longitudinal direction. (70A) and (70B) perform the fixing and unlocking operations opposite to each other, so that the transfer and fixing of the wire (W) is made.

That is, when the first clamp 70A fixes the wire W and operates forward, the second clamp 70B releases the fixing of the wire W to enable forward transfer of the wire W, and vice versa. When the first clamp 70A releases the wire W and operates backward, the barb portion B is molded through the press unit PU while the second clamp 70B fixed the wire W. In this case, the second clamp 70B functions as a tensioner to hold the front and rear ends of the wire so that the tension (tension) is maintained.

Further, so that the wire (W) being transported between the clamps (70A) and (70B) can be held in tension with a certain tension or more, the transport means (TM) is a shaft block (73) installed on one side of the wire (W). ), arranged in a direction perpendicular to the longitudinal direction of the wire (W) and hinged to the shaft block 73 so that the inner end rotates downward by its own weight while maintaining the wire (W) at a constant tension. It further includes a tension sensing unit 70C composed of a tension rod 74 for sensing the tension of the wire (W) while pressing.

The tension rod 74 has the middle part hinged to the shaft block 73 so that the inner and outer ends perform a seesaw movement up and down, and at this time, the inner end is longer than the outer end based on the shaft of the seesaw movement, As long as no external force is applied, the inner end of the tension bar 74 is lowered by its own weight to press the wire W between the clamps 70A and 70B with a constant pressure to maintain the tension.

In addition, the tension sensing unit 70C is coupled to the outer surface of the shaft block 73 and includes a sensing unit (not shown) for detecting a change in the height of the outer end of the tension rod 74 in real time, a wire ( W) further includes a sensing block 75 for measuring the amount of change in tension.

The sensing block 75 has a 'C' shape with an open upper surface, and the outer end of the tension rod 74 is accommodated in a 'C'-shaped accommodating groove, and the sensing unit is located on one side or both sides of the accommodating groove. It consists of an equipped optical sensor.

Therefore, the angle of the tension rod 74 may be changed up and down according to the tension of the wire W being transferred. At this time, the height of the outer end of the tension rod 74 is sensed in real time by the sensing unit, When the height of the stage is sensed out of the error range, that is, when the tension of the wire W is out of the error range, error notification and/or emergency stop of the equipment is made to prevent defective product production in advance.

Next, as shown in Figures 1, 12, and 13, the discharge unit (EU) is to collect and discharge the suture (S) in which the barb (B) is molded,

The cutting part 80 for cutting the discharged wire (W) at a certain length after the barb part (B) is molded and discharging the suture (S), and pulling the front end of the wire (W) before cutting It includes a unit 90 , an ionizer 100 for removing static electricity from the discharged suture S, and a collecting unit 110 used for discharging the suture S from a reel.

The cutting part 80 cuts the wire W (suture S) pulled by the gripper 91 of the pulling part 90, and is installed adjacent to the front end side of the second most forward clamp 70B. and a cutting block 82 on which the blade 81 is mounted, and a cylinder 83 for moving the cutting block 82 forward and backward in a direction perpendicular to the longitudinal direction of the wire (W).

The pulling portion 90 includes a gripper 91 that grips the end of the wire W (suture S) in the forward-most second clamp 70B and pulls it by a predetermined distance.

The gripper 91 may hold the end of the wire W in a tongs type, and is coupled to move forward and backward along the guide frame 92 to move in the longitudinal direction of the wire W.

In this discharge unit EU, when the wire W is transferred, the gripper 91 works forward by the same distance in conjunction with the first clamp 70A,

When the forward transfer of the wire W is completed, the blade 81 cuts and separates the suture S from the wire W, and then the gripper 91 releases the grip on the suture S and cuts the suture. (S) falls through the outlet formed in the bed and discharge is completed,

The gripper 91 from which the suture S has been discharged is returned back to the second clamp 70B on the forwardmost side, grabs the end of the wire W, and prepares for the next operation.

And the ionizer 100 blows ionized air to the suture S that is pulled by the pulling unit 90 and is waiting to be discharged, so that static electricity including foreign substances and static electricity to the suture S is removed. .

Such an ionizer 100 is installed on the front end side of the pulling unit 90, more preferably between the pulling unit 90 and a collecting unit 110 to be described later, and a suture pulled by the pulling unit 90 ( S) blows the ionized air towards the exhaust path.

Here, the removal of static electricity from the suture S of the ionizer 100 should be understood as a concept including the removal of various foreign substances, impurities, static electricity, etc. remaining in the suture S.

On the other hand, the discharge unit EU is a reel shaft 111 on which the discharge reel 111A on which the suture S is wound is mounted, and a tension roller that maintains the tension of the suture S wound around the discharge reel 111A to a certain level or more. It further includes a collection unit 110 having a 114 .

The collection unit 110 includes a mounting plate 112, a servo motor 113, and a guide roller 115 having the same structure and operation as the above-described supply unit 40 and the tension control unit 50, Detailed description of each configuration is omitted.

At this time, the ionizer 100 is installed adjacent to the rear end of the discharge reel 111A between the gripper 91 and the discharge reel 111A, more precisely, a suture that is pulled by the pulling part 90 . In addition to (W), ionized air is blown to the suture (W) just before being wound on the discharge reel (111A) to remove static electricity.

In this way, the discharge unit (EU),

A pulling part 90 and a cutting part 80 that can be cut and discharged with a single suture (S),

And the whole of the suture (S) is wound into one and is divided into a collection unit 110 that can be discharged,

By selectively using either the pulling unit 90 , the cutting unit 80 , or the collecting unit 110 , it enables processing and production of the suture S according to the delivery method of the suture S.

In addition, when the suture S is wound around the discharge reel 111A using the collecting unit 110, the suture S may be twisted while the discharge reel 11A rotates, causing damage to the barb portion B.

Accordingly, the present invention is a transport tunnel having a transport groove 117a installed between the cutting part 80 and the collecting part 110, through which the suture S is inserted to guide the horizontal movement of the suture S. (117) is further included.

In the transfer tunnel 117, a pair of tunnel bars are vertically coupled to form a transfer groove 117a in the longitudinal direction on the contact surface thereof, and the transfer groove 117a is a suture (S) discharged from the cutting unit 80. installed so as to be located on the same line as

This transport tunnel 117 has a length corresponding to the distance between the frontmost second clamp 70B and the collecting unit 110, and the suture B before being wound on the discharge reel 111A is twisted left and right so as not to be twisted. Thus, the barb portion (B) of the suture (B) wound on the discharge reel (111A) is prevented from being damaged.

At this time, the transfer tunnel 117 is detachably provided on the bed on the upper side of the container, and when discharging the single suture (S) to the container, the collection plate 116 is mounted on the bed to work, and the suture is placed on the discharge reel 111A. When discharging by winding (S), after removing the collecting plate 116, the pedestal 117b of the transfer tunnel 117 is mounted on the bed to work.

On the other hand, the present invention further includes a wire fixing means for preventing the separation of the wire (W) by holding the vertical and horizontal flow of the wire (W) when the wire (W) is released while moving left and right.

As shown in Figure 15, the wire fixing means,

A plurality of lead-out holes connected in the horizontal direction between the pair of separation prevention rods 53 and spaced apart from each other by a predetermined distance vertically to form a wire moving groove 54A, and having an inner surface in contact with the moving groove 54A opened. (54a) a pair of transverse bars 54 are arranged in the longitudinal direction,

A pressing member 55 coupled to retractable from the withdrawal hole 54a and having a hemispherical protrusion 55a exposed through the moving groove 54A;

Including a spring 56 for elastically supporting the pressing member 55 to be drawn out from the withdrawal hole 54a,

When the wire (W) moves left and right, the hemispherical protrusion (55a) of each pressing member (55) protrudes and retracts while pressing the outer peripheral surface of the wire (W), characterized in that it catches the vertical and horizontal flow of the wire (W).

The pair of horizontal bars 54 are vertically spaced apart from each other by a width corresponding to the outer diameter of the wire W, and are provided with a plurality of draw-out holes 54a having inner surfaces facing each other open, and each draw-out A locking end 54b protrudes from the inner surface of the outlet end of the hole 54a.

The pressing member 55 is a rod-shaped member fitted into the withdrawal hole 54a, one end of which is formed as a hemispherical protrusion 55a, and an outer peripheral surface has a locking protrusion 55b caught by the locking end 54b. is protruding

The spring 56 is extrapolated to the pressing member 55, and one end is supported by the locking protrusion 55b and the other end is supported by the bottom of the pull-out hole 54a to exert an elastic force in the opposite direction to compression. Thus, the pressing member 55 is elastically supported so as to be drawn out from the withdrawal hole 54a.

In this wire fixing means, each pressing member 55 is drawn out from each extraction hole 54a in a state where no external force is applied, so that the upper and lower hemispherical protrusions 55a are in contact with each other, and the horizontal bars 54 are Only the pressing members 55 in contact with the interposed wire W press the outer circumferential surface of the wire W while being drawn into the lead-out hole 54a.

Therefore, when the wire W is released while moving left and right, the hemispherical protrusions 55a come into contact with the outer circumferential surface of the wire W while the pressing members 55 in contact with the wire W appear and protrude while the wire W moves left and right. It suppresses the up, down, left, and right flow of the wire (W) by holding the recoil that occurs when unwinding, and at this time, the elastic force of the spring 56 is applied to the wire (W) to generate a kind of resistance to the wire (W) being unwound. W) is released while maintaining the tension above a certain level to assist the function as the tension control unit 50 .

Next, a specific operation of the press molding apparatus for the suture S having the above configuration will be described.

First, the supply reel on which the wire W is wound is mounted on the reel shaft 41, and then the wire W is released to the first and second clamps ( 70A) and 70B and the lower mold 10 of the press unit PU.

After that, when the equipment is operated, the gripper 91 operates backward to grab the end of the wire W and enter the discharge standby state.

When the work starts, first, the servo motor 43 rotates and the wire W is unwound by a certain length. At this time, the tension roller 52 descends by a certain height to release the wire W unwound from the supply reel with a certain tension or higher. to keep

And in the state in which the second clamps 70B fix the wire W, the first clamps 70A fix the wire W and then operate forward by a certain distance, the wire W is transferred, and the gripper ( 91 advances the same distance as the first clamp 70A and pulls the wire W.

At this time, the forward distance between the first clamp 70A and the gripper 91 has the same distance as the distance between the barbs B, and after the repeated forward operation of the first clamp 70A and the processing of the barbs B is completed, The first clamp 70A and the gripper 91 advance according to the length of each suture S, so that the wire W is transferred, that is, the suture S is discharged.

At this time, while the tension roller 52 rises step-by-step by a predetermined height according to the length to which the wire W is forwardly transported by the first clamp 70A, the wire W before supply is continuously pressed downward (pulling) the wire Maintain the tension of (W).

And the transferred wire (W) is flat press-bonded to a predetermined thickness while passing through the support block 61 and the pressing roller 62 of the flattening unit 60 .

When the wire (W) is put into the press unit (PU), the second clamp (70B) fixes both ends of the wire (W) exposed to the front and rear ends of the press unit (PU) to fix the tension of the wire (W) during processing At the same time as preventing this displacement, the first clamp 70A is returned to the original position backward to prepare for the next transfer operation.

After that, when the upper mold 20 is lowered, the first punch 30A first contacts the lower mold 10, and at this time, the support plate 30B continues to descend while the second punch 30B is further lowered to operate the wire. press forming.

Specifically, first, the first punch 30A descends so as to be completely in close contact with the upper surface of the seating block 11A. As described above, since the depth of the seating groove 12 has a height lower than the diameter of the circular wire W, While the upper surface of the wire (W) is pressed by the first punch (30A), the wire (W) is flattened as much as the width of the seating groove (12), and the wire (W) on the seating groove (12) is improved as a strip (strip). completely flattened.

After the upper mold 20 rises, when the wire W is transferred forward by a predetermined length by the transfer means TU, the wire WS flattened by the first punch 30A is transferred to the second punch 30B ) is located at the bottom and stops.

And when the upper mold 20 is lowered again, flattening molding is performed on the circular wire W by the first punch 30A, and at the same time, the second punch 30B is lowered by the support plate 21 . is inserted into the guide hole 13 and guided, and at the moment when the descent of the second punch 30B is completed, the blade part 30a of the second punch 30B is flattened at one or both ends of the wire WS. Cutting is made while passing through, and press molding of the barb portion (B) is made.

At this time, since the flattened wire WS is supported on the support portion 14 processed to have the same shape as the suture S, the blade portion 30a passes one or both ends of the flattened wire WS. It prevents the wire WS from being pushed downward, and through this, cutting and molding of the barb portion B is made into an accurate shape, and burrs due to cutting do not occur.

And the cutting scrap cut from the wire by the blade part 30a is discharged to the discharge hole 13a through the guide hole 13, and the cutting scrap sucked through the suction means is discharged to the outside of the press processing unit PU. are collected

When the molding of the barb portion B is completed, the upper mold 20 rises while the second punch 30B, the support plate 21, and the first punch 30A rise sequentially to enter a molding standby state, 2 When the punch (30B) rises and returns, the guide part (30b) is pulled out from the guide hole (13) after the blade part (30a) is immediately separated from the suture (S).

At this time, since the guide portion 30b of the second punch 30B is first inserted into the seating block 11B and guided directly, and then the blade portion 30a is cut, the second punch 30B is sutured after cutting. The back heel of the suture S does not occur because it does not come into contact with the side end of S). It can prevent the mold from being crushed by pressing.

That is, the blade portion 30a protrudes in close contact with the side surface of the support portion 14, while the guide portion 30b is spaced apart from the support portion 14, so the second punch 30B guides while ascending. Since the inner surface of the portion 30b does not contact the side end of the suture S, a back heel phenomenon of the suture S due to friction does not occur.

Through this, the present invention can precisely process and mold the barb portion (B) even for a wire (W) having a thickness of about 0.38 mm or less.

In addition, even if the second punch 30B and the upper mold 20 are affected to rise together due to friction or static electricity when the upper mold 20 is raised, the suture S is moved to the lower mold by the guider 15. (10) to prevent lifting, the suture (S) is not separated from the seating groove (12).

When the process of one cycle is completed in this way, a plurality of barbs (B) are formed at predetermined intervals on one or both sides of the flat compressed portion at the interruption of the wire (W).

After the second clamp 70B unfixes the wire, the first clamp 70A and the gripper 91 transfer the wire W as much as the distance between the barbs B and the above process is repeated, The suture S can be produced by precisely processing a plurality of barbs B in the longitudinal direction of the wire W to the same standard.

And the suture (S) on which the barb part (B) is molded has both ends fixed by the second clamp (70B) and the gripper (91), and the cutting part (80) operates to form the suture (S) and the wire ( W), and at this time, the gripper 91 releases the grip on the suture S at the same time as the cutting part 80 operates, and the suture S of a predetermined length that has been molded falls into the outlet to the lower side of the bed. It is seated and stored in a separate container.

In addition, when the suture (S) is not cut to a predetermined length and discharged by winding it in a reel shape, the end of the wire (W) is wound around the discharge reel (111A) without using the gripper 91 at the time of initial setting. stand to set

In this case, the pulling part 90 provided with the gripper 91 is moved to one side of the bed so as not to interfere with the discharge path of the suture S, and the cutting part 80 is also set to not work, so that the wire W ) (suture (S)) is transferred and discharged only by rotation of the discharge reel.

At this time, since the suture (S) before being wound on the discharge reel (111A) is inserted into the transfer groove (117a) of the transfer tunnel (117) and moves horizontally in a fixed state, the suture (S) is twisted or twisted left and right to the barb ( B) can be prevented from being damaged.

In addition, when the suture S is discharged by the pulling unit 90 or the discharge reel, the ionizer 100 is repeatedly or always operated for a predetermined time to remove static electricity from the suture S.

That is, when the suture S is cut to a predetermined length using the cutting part 80 and the pulling part 90 and discharged, the ionizer 100 stops the operation during the cutting operation and the suture S is blown and fixed. to prevent falling into position and not being discharged,

Conversely, when the suture S is wound around the discharge reel and discharged without using the cutting unit 80 and the pulling unit 90, the ionizer 100 continues to blow the suture S.

At this time, in the present invention, since the press unit (PU) is installed as a pair of front and rear spaced apart, it is possible to simultaneously process the barbs (B) in two places of the suture (S) at the same interval, and the finally discharged suture (S) has Two sets of barbs B are formed.

On the other hand, the tension of the wire W may be weakened due to a decrease in the strength of the wire W due to the forming of the barb portion B during the transfer of the wire W. In the present invention, the tension rod 74 is a clamp 70A. A wire installed between the 70B (more precisely, the rear of the rearmost first clamp 70A, in front of the front-end-side second clamp 70B of each press unit PU) and being transported by a certain length section Since the tension of (W) can be continuously sensed, it is possible to prevent the molding interval of the barb part (B) from being changed according to the change in tension.

In addition, when the tension of the wire (W) changes beyond the error range, the sensing block 75 immediately detects this and an error notification and/or facility stop is made. Savings and productivity improvement can be provided.

The present invention provides a barbed portion (B) of the suture (S) by press-cutting the wire (W) flatly compressed through the press compression of the first punch (30A) with the second punch (30B) at the correct position. They can be precisely processed to the same standard, and compared to the prior art, it provides the effect of reducing the manufacturing cost and improving the productivity required for processing the suture (S), thereby enabling the mass production of the suture.

In the above description of the present invention, with reference to the accompanying drawings, the press forming apparatus for suture has been mainly described, but the present invention is capable of various modifications, changes and substitutions by those skilled in the art, and such modifications, changes and substitutions are the protection of the present invention. should be construed as within the scope.

W : Wire WS : Flattened Wire
S: Suture
B : Barb part Ba : Separation part
SU : Supply unit TM : Transport means
PU : Press unit EU : Discharge unit
10: lower mold 11: seating block
12: seating groove 13: guide hole
14: support 15: guider
20: upper mold 21: support plate
30A: first punch 30B: second punch
30a: blade part 30b: guide part
40: supply unit 41: reel shaft
42: mounting plate 43: servo motor
50: tension control unit 51: guide roller
52: tension roller 60: tension fixing part
61: support block 62: compression roller
70A, 70B: Clamp 70C: Tension sensor
71: support block 72: press block
80: cutting part 81: blade
82: cutting block
90: pulling part 91: gripper
100: ionizer 110: collection unit
111A: discharge reel 117: transfer tunnel

Claims (4)

In the suture press molding apparatus for producing a suture (S) having a plurality of barbs (B) protruding at regular intervals on the outer circumferential surface of the wire (W),
a supply unit (SU) for supplying the wire (W);
Transfer means (TM) for transferring the wire (W) in the longitudinal direction;
Discharge unit (EU) for collecting and discharging the barb (B) is molded suture (S);
It is installed between the supply unit (SU) and the discharge unit (EU),
The lower mold 10 on which the wire (W) being transferred in the longitudinal direction is seated;
The upper mold 20 ascending and descending from the upper side of the lower mold 10,
A press unit (PU) including a second punch (30B) for forming the barb (B) by cutting one or both ends of the flattened wire (W) in a press manner when the upper mold (20) is lowered; including,
The lower mold 10 includes a guide hole 13 through which the second punch 30B is inserted to guide the elevation of the second punch 30B,
The second punch 30B is inserted into the guide hole 13 and ascends and descends, but protrudes inward from the upper end of the lower guide portion 30b inserted into the guide hole 13 and the guide portion 30b. Includes a blade portion (30a) for cutting and molding the barb portion (B) of the suture (S),
The supply unit (SU) includes a supply unit 40 to which the wire (W) waits,
The supply unit 40 is installed to be movable from side to side in the bed,
When the wire (W) is released while moving from side to side in the supply unit 40, it further includes a wire fixing means for preventing the separation of the wire (W),
The wire fixing means,
A pair of horizontal bars ( 54),
A pressing member 55 coupled to retractable from the withdrawal hole 54a and having a hemispherical protrusion 55a exposed through the moving groove 54A;
Including a spring 56 for elastically supporting the pressing member 55 to be drawn out from the withdrawal hole 54a,
Suture characterized in that when the wire (W) moves left and right, the hemispherical protrusion (55a) of each pressing member (55) protrudes and protrudes and presses the outer circumferential surface of the wire (W) to hold the vertical and horizontal flow of the wire (W) Used press forming equipment.
The method of claim 1,
The lower mold (10) is provided in the longitudinal direction along the center of the guide hole (13), and a suture press forming apparatus, characterized in that it includes a support portion (14) made of the same shape as the suture (S).
The method of claim 1,
A second clamp ( 70B), characterized in that it comprises a suture press molding apparatus.
The method of claim 1,
The discharge unit EU includes a discharge reel 111 on which the suture S is wound,
A transfer tunnel 117 installed between the press unit PU and the discharge reel 111 and having a transfer groove 117a through which the suture S is inserted to guide the horizontal movement of the suture S. Suture use press molding device, characterized in that it comprises.

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