KR102167098B1 - Press cutting equipment for suture - Google Patents

Abstract

The present invention relates to a suture press molding apparatus for forming a barb on the outer circumferential surface of a surgical suture used when suturing a human muscle or skin in a surgical suture operation of humans or animals, especially plastic surgery, and more specifically It relates to a press forming apparatus for sutures that can reduce manufacturing cost and improve productivity, including a punch for forming barbs on one or both sides of the outer peripheral surface of the wire by pressing and cutting the circular wire in a press manner.

Description

Press forming equipment for suture {PRESS CUTTING EQUIPMENT FOR SUTURE}

The present invention relates to a suture press molding apparatus for forming a barb on the outer circumferential surface of a surgical suture used when suturing a human muscle or skin in a surgical suture operation of humans or animals, especially plastic surgery, and more specifically It relates to a press forming apparatus for sutures that can reduce manufacturing cost and improve productivity, including a punch for forming barbs on one or both sides of the outer peripheral surface of the wire by pressing and cutting the circular wire in a press manner.

In general, suturing surgery, especially in plastic surgery, when suturing with a general suture (wire, thread), the effect of the plasticity is reduced by half, and the skin tissue cannot be fixed, that is, it cannot be held, and the appearance after the operation is poor.

In particular, in recent years, as interest in maintaining a young person or preventing skin aging increases, many other methods (cosmetics, massage, etc.) are being used, but the effect cannot be expected directly, so many people perform surgery to remove skin wrinkles. It is a situation to receive.

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

As a prior art for such a surgical suture, there is a Korean Patent Publication No. 10-2005-0108494 (2005.11.17) "a plastic surgery operating room having a protrusion",

The present invention relates to a plastic surgery operating room used for wrinkle removal surgery, and in detail, a conical projection is formed on the surface of a thread, and the projection is inclined in a predetermined direction to increase the surgical effect, and also the conical shape of the thread. The protrusion is characterized in that it is formed to be sharply inclined toward both ends with the center reference line as the center in the longitudinal direction of the thread having a certain length.

In order to automatically form and form a projection (hereinafter collectively referred to as a barb) on the outer circumferential surface of the operating room (hereinafter collectively referred to as suture) such as the above invention, the structure and operation of the manufacturing device must be made very precise and fine.

In other words, surgical sutures are very thin, unlike ordinary threads, and therefore, in order to form fine barbs with uniform height and thickness in such a thin suture, the molding operation must be performed very precisely. Currently, surgical sutures Since the molding device used for molding is inferior in molding precision, in the case of fine sutures, an automated molding device is not used, and a worker molds and produces the barbs through manual labor.

In order to solve the above problems, there is Korean Patent Laid-Open Publication No. 10-2012-0022360 (2012.03.12) "Surgical suture manufacturing apparatus and suture manufactured by the apparatus" (hereinafter referred to as conventional technology).

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

However, in the conventional suture manufacturing apparatus, the extrusion machine itself is very expensive, and it is very expensive to manufacture and install a separate extrusion mold so that it can be rotated in such an expensive extrusion machine.

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

In addition, when extruding surgical sutures of very thin thickness and forming the barbs using the molding blade of an extrusion mold, considering the fine thickness and height of the barbs, there is a risk of damage or damage to the barbs before the resin is cooled during extrusion molding. It is large, and there is a problem that the molding blade is easily closed during extrusion,

In particular, excellent effects can be expected as sutures only when the protrusion height, angle, length, and spacing of each barb part are precisely molded without error. The conventional suture molding apparatus including the above patent has low processing precision and high defect rate, so productivity There is a problem with this falling.

Accordingly, there has been a need for a technology capable of reducing manufacturing cost and improving productivity while enabling precise and meticulous molding, such as molding of the barb through conventional manual operation.

Accordingly, the present invention was devised to solve the above problems,

In order to precisely produce all the barbs on the outer circumferential surface of the wire to the same standard and to reduce manufacturing cost and improve productivity, circular wires are pressed and cut by a press method to form the barbs on one or both sides of the outer circumference of the wire. It is an object of the present invention to provide a press molding apparatus for sutures that can be processed by changing the protruding direction of the barb in various ways as necessary.

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

A supply unit for supplying a wire;

Transfer means for transferring the wire in the longitudinal direction;

A discharge unit for collecting and discharging the suture with the barbs formed thereon; And

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 that rises and falls from the upper side of the lower mold,

And a press unit including a first punch for flattening by pressing the wire when the upper mold is lowered, and a second punch for forming the barb by cutting one end or both ends of the flattened wire in a press manner. do.

And in the press molding device for suture,

The press unit is characterized in that a pair of front and rear are installed at a predetermined interval in the longitudinal direction of the wire.

Furthermore, in the press molding device for suture,

The wire transfer means,

A first clamp that fixes and releases the wire by a gripping operation, but is provided forward and backward in the length direction of the wire between each unit and transfers the wire forward, and the wire is fixed to the front and rear ends of the press unit to form the barbs. It characterized in that it comprises a second clamp for fixing.

In addition, in the press molding device for suture,

The upper mold includes a barb-shaped stripper coupled to be lifted and lowered separately from the upper mold,

The barb-forming stripper includes an elevating hole through which the second punch passes up and down, and the barb-forming stripper is elastically supported downward by a spring with respect to the upper mold,

When the upper mold is lowered, the second punch is further lowered while the barb-forming stripper fixes the flattened wire, thereby forming the barb portion.

Press molding apparatus for suture 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 barbs, and all the sizes of the barbs can be precisely molded.

The barb part is formed while the wire is rotated to twist, and the direction of the barb part can be changed in various ways to produce

By forming the barbs on one or both sides of the flatly crimped wire, it is possible to prevent the occurrence of wire breakage or thickness defects during processing,

By quickly separating and discharging the cutting scrap generated after cutting by a suction method to prevent the occurrence of cutting burrs in the suture, the quality of the suture is improved.

By reducing the defect rate that occurs during processing, there is an effect of reducing manufacturing cost and improving productivity.

1 is a plan view showing a suture formed by the present invention.
Figure 2 is a conceptual diagram schematically showing a press molding apparatus for suture according to the present invention.
3 and 4 are a front view and a side view showing a press unit of the suture press molding apparatus according to the present invention.
5 is a plan view showing a lower mold and a stripper holder according to the present invention.
6 is a front view, a side view and a bottom view showing a second punch according to the present invention.
7 is a front view, a plan view and a side view showing a seating block according to the present invention.
Figure 8, Figure 9 is a perspective view of a suture press molding apparatus according to the present invention.
Figure 10 is a front view of the suture press molding apparatus according to the present invention.

The present invention will be described in detail in the text of the bar, implementation (態樣, aspect) (or embodiment) that can apply various changes and can have various forms. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included.

In each drawing, the same reference numerals, in particular the number of tens and ones, or the same number of tens, ones, and alphabet indicate members having the same or similar functions, and unless otherwise specified, each of the drawings The member indicated by the reference number can be identified as a member conforming to these criteria.

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

The terms used in the present specification are only used to describe specific embodiments (sun, 態樣, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present application, terms such as ~include~ or ~consist are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added.

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

The ~1~, ~2~, etc. described in the present specification will only be referred to to distinguish different constituent elements, and are not limited to the order of manufacture, and the names in the detailed description and claims of the invention It may not match.

In the description of the press forming apparatus for sutures according to the present invention, for convenience, if an approximate rough direction standard is specified with reference to [A] of FIG. 2, the direction in which gravity acts as the lower side, and the visible direction is up, down, left and right. In the detailed description of the invention and in the claims related to other drawings, unless otherwise specified, directions are specified and described in accordance with this standard.

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

The press molding apparatus for suture according to the present invention is a device that compresses and cuts barbs (B) of various shapes on one or both sides of the outer peripheral surface of the wire (W) being transferred in the longitudinal direction in a press method,

As shown in Fig. 1, a supply unit (SU) that supplies a wire (W) before processing, a transfer means (TM) that transfers the wire (W) in the longitudinal direction, and a suture in which the barbs (B) are molded ( A discharge unit (EU) for discharging S), installed between the supply unit (SU) and the discharge unit (EU) to compress the wire (W), and then press-form the barb (B) on the flattened wire (WS) It includes a press processing unit (PU).

The supply unit (SU) and the discharge unit (EU) are connected to the wire (W) and suture (S) connected before cutting after processing (the wire (W) and suture (S) are As a division, the wire and the suture are actually connected by a single thread in the step before cutting.) Both ends of the wire are connected to rotate and/or discharge the reel of the supply unit (SU) in connection with the operation of the transfer means (TM). While the gripper 91 of the unit EU moves forward and backward (or reel rotation), the wire W is passed through the press processing unit PU so that the wire W is supplied and processed and the suture thread S is discharged. .

First, a press processing unit (PU) according to the present invention will be described with reference to FIGS. 2 to 7.

The press processing unit (PU) largely includes a lower mold 10 fixedly installed on the upper bed, an upper mold 20 which is lifted and lowered from the upper mold 10 to open and close the mold, and the upper mold 20 It includes a first punch (30A) for flattening the circular wire (W) by elevating at and a second punch (30B) for cutting and molding the barbs (B) on the flattened wire (WS).

Specifically, in the lower mold 10, the wire W being transferred in the longitudinal direction is seated, and the seating block 11 for supporting the wire W to be pressed is coupled to the upper surface of the mold base, and the seating The upper surface of the block 11 is provided with a seating groove 12 recessed downward so that the wire W is inserted in the longitudinal direction of the wire W.

At this time, the seating groove 12 is concave with a width wider and lower in height than the diameter of the circular wire W in the state before processing, so that the descending first punch 30A flattens and flattens the circular wire W. The second punches 30B descending one or both ends of the flattened wire WS are cut to form the barbs (B).

That is, when pressing for forming the barb (B), the circular wire (W) entering the press unit (PU) is flattened while passing through the first punch (30A), and thus the flattened wire (WS) The cutting of the barb portion (B) is made while passing through the second punch (30B).

In addition, the lower mold 10 includes a through hole 13 through which the second punch 30B passes,

The through hole 13 is connected to a suction means (not shown) so that the cutting scrap is adsorbed and discharged.

To this end, a discharge part 14 for integrating the through holes 13 into one flow path is provided under the through hole 13, and the discharge part 14 includes a suction connection part (not shown) connected to the outside of the mold In communication, suction means such as a compressor are connected.

This lower mold 10 is cut to the bottom of the through hole 13 by the second punch 30B by applying negative pressure for vacuum adsorption on the through hole 13 and the discharge part 14 by the suction means. The cutting scrap is adsorbed and discharged to the outside.

In addition, the lower mold 10 includes one or more first guide holes 16 to guide the elevation of the upper mold 20 during mold opening and closing.

Further, the lower mold 10 includes a stopper 17 that prevents the suture S from escaping upward from the lower mold 10 after forming the barb part B (see FIG. 7 ).

The stopper 17 is provided on the front side and/or the rear side (based on the length of the wire) of the seating block 11 (more strictly, a portion where the second punch 30B rises and descends), and the wire W And / or by pressing the suture (S) barbed stripper 22 and / or when the second punch (30B) rises when the suture (S) is raised together to prevent separation from the mounting groove 12, the seating groove It is coupled to the upper surface of the lower mold 10 in a form that covers a part of the seating groove 12 in a direction perpendicular to the 12.

Next, the upper mold 20 is installed so as to elevate from the upper side of the lower mold 10, a first punch 30A for flattening a circular wire W when lowering, a flattened wire WS A second punch (30A) that partially cuts one end or both ends of the wire (WS) fixed with the barbed stripper 22, which is fixed by pressing the barbed stripper 22, in a press manner to form the barb part (B) Includes.

Specifically, the upper mold 20 includes a barb-shaped stripper 22 coupled to a lower surface of the mold base so as to be lifted and lowered separately from the upper mold,

The barb-forming stripper 22 includes an elevating hole through which the second punch 30B passes up and down, and the barb-forming stripper 22 is elastic to the lower side by a spring 24 with respect to the upper mold. Supported,

When the upper mold 20 is lowered, the second punch 30B is further lowered while the barbed stripper 22 fixes the flattened wire WS, thereby forming the barb part B.

To this end, the upper mold 20 has a built-in spring 24 that presses the piston 24a on one side of the mold base, and a stripper holder 21 having a barbed stripper 22 at the lower end of the piston 24a. ) Is combined, and when the mold closing of the upper mold 20 is completed, the elastic force generated when the spring 24 is compressed is transmitted to the stripper holder 21 through the piston 24a, so that the barbed stripper 22 is flattened. WS) to fix.

In addition, the stripper holder 21 and the barbed stripper 22 are provided with an elevating hole (not shown) formed through vertically, and the first and second punches 30A and 30B are fitted and coupled to each elevating hole, A lifting block 26 to which the coupling portions 33 of the first and second punches 30A and 30B are engaged is provided at the upper part of the lifting hole, and a lifting plate 27 is provided on the upper surface of the lifting block 26. Combined, when the upper mold 20 is raised and lowered, the first and second punches 30A and 30B are elevated and lowered separately from the barbed stripper 22 by the spring 24.

And the stripper holder 21 includes a second guide hole 27 corresponding to the first guide hole 16, and the guide rod 28 coupled to the lower surface of the lifting plate 27 is the first , It is inserted into the second guide hole 16, 27 to guide the lifting operation of the upper mold 20, the stripper holder 21, and the second punch 30B.

And the first punch (30A) and the second punch (30B) are provided to elevate and descend through the stripper holder 21 and the barbed stripper 22, respectively, and when the upper mold is lowered, the first punch ( 30A) is flattened by flattening a portion of the rear end of the circular wire W entering the lower mold 10, and the second punch 30B is a wire WS that has been flattened by the first punch 30A. The barbs (B) are formed by cutting a part of one or both ends of the press method.

The first and second punches 30A and 30B include a rod portion 31 having a predetermined length up and down, and a coupling portion 33 protruding from both sides of the upper side of the roll portion and engaging the lifting block 26. Including, but the second punch (30B) has a blade head portion 32 protruding in a shape corresponding to the spacing portion (Ba) between the barbs (B) on one side of the lower side of the rod portion 31 While provided, the first punch 30A is different in that there is no blade head part 32.

The rod portion 31 of the second punch 30B has a square column shape, and the protruding blade head 32 is connected to have a predetermined length vertically, and the cross-sectional shape of the blade head 32 is suture It may vary depending on the shape of the barb (B) of (S).

That is, for example, as shown in the drawing, when both side barbs (B) are in the shape of an arrow, the blade head portion 32 is formed of each of the adjacent arrow-shaped barbs (B) according to the spacing between the barbs (B). It has the shape of the remaining part connecting the long side and the short side.

This press unit (PU) is spaced apart a predetermined distance in the length direction of the wire (W), a pair of front and rear is 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) folds the middle part between the barbs (B) and the barb part (B) ) Can be used as double sutures that overlap each other.

Of course, by adjusting the processing interval of the barbs (B) with only one press unit (PU), it is possible to process appropriately for the double suture, but in this case, the gap between the barbs (B) of the double suture and the individual sutures that are cut from each other Since the intervals between the barbs (B) do not coincide with each other, the operation control of the conveying means becomes complicated, and thus operation stability and productivity can be improved through a pair of press units (PU).

Subsequently, as shown in FIGS. 2 and 8, 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 where tension is maintained, and a tension fixing unit that flatly presses the wire W before being supplied to the press unit PU. It includes (60).

The supply unit 40 includes a reel shaft 41 on which a supply reel (not shown) on which a wire W is wound is mounted, and the reel shaft 41 has left and right sides of the supply reel to adjust and fix the position of the supply reel. Mounting plate 42 is provided to pressurize.

The reel shaft 41 is rotatably provided by the servo motor 43 so that the tension control unit 50 and the servo motor 43 interlock to allow the wire W to be released and transferred from the supply reel.

The tension control unit 50 is arranged in a vertical zigzag shape between a pair of guide rollers 51 for guiding the wire W released from the supply reel to the tension fixing unit 60 and the guide rollers 51 It includes a tension roller 52 that goes up and down.

The tension roller 52 is supported by pulling and supporting the wire W in the opposite direction of the fixed guide roller 51, so that the wire W maintains a certain tension or more, that is, is released in a tightly tensioned state, and is supplied to stand by. .

The tension fixing part 60 includes a support block 61 supporting the lower side of the wire W, and a push roller 62 for maintaining a certain tension by pressing the wire W on the support block 61 downward. ).

A fixed roller 63 for horizontally maintaining the wire W between the guide roller 51 and the first clamp 70A is provided at the front and rear ends of the push roller 62, and the push roller 62 is a cylinder By lowering to a lower height than the fixed rollers 63 through 64, the circular wire W passing through the support block 61 is pressed and held.

Next, as shown in Figs. 2 and 9, the transfer means (TM) fixes and releases the wire (W) by a gripping operation, but the wire (W) between each unit (SU) (PU) (EU) A first clamp (70A) that is provided forward and backward in the longitudinal direction of) to forward and transfer the wire (W), and is fixed to the front and rear ends of the press unit (PU) to form the barbs (B) when forming the wire (W) It includes a second clamp (70B) to fix the.

The first and second clamps 70A and 70B have a support block 71 on which a wire W is supported on an upper side, and the support block 71 operates up and down to fix the wire W and Consisting of a pressure block 72 to release the fixed, in the drawing, an embodiment in which the pressure block 72 is hinged to the support block 71 so that the gripping operation is performed by moving the pressure block 72 through a cylinder is representative. Although shown as, it is also possible in a manner in which the pressure block 72 is directly elevated and lowered by a cylinder.

These first and second clamps 70A and 70B have the same configuration in that the wire W is fixed or released by holding the wire W, but the first clamp 70A is The second clamp 70B is different in that it is fixed and installed without moving at the front and rear ends of the press unit (PU), while the second clamp 70B is installed so as to be able to move forward and backward in the longitudinal direction. Accordingly, the first and second clamps (70A) (70B) performs the fixing and releasing operations opposite to each other, so that the transfer and fixation 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 to the wire (W) to enable the forward transfer of the wire (W), vice versa. When the first clamp (70A) releases the wire (W) and operates backward, the second clamp (70B) fixes the wire (W) and forms the barb (B) through the press unit (PU). Let this happen.

Further, the transfer means (TM) is a shaft block 73 installed on one side of the wire (W) so that the wire (W) during transfer between the clamps (70A) (70B) can be held in tension with a certain or more tension. , Arranged in a direction orthogonal to the longitudinal direction of the wire (W) and is hinged to the shaft block (73), the inner end is rotated downward by its own weight, while pressing the wire (W) so that the wire (W) is maintained at a certain tension It further includes a tension sensing unit 70C composed of a tension rod 74 that senses the tension of the wire W while giving it.

The tension rod 74 is hinged to the shaft block 73 so that the inner and outer ends of the tension rod 74 perform a seesaw movement up and down, and the inner end of the tension rod 74 is coupled longer than the outer end based on the axis of the seesaw movement, Unless an external force is applied, the inner end of the tension rod 74 is lowered by its own weight, and the wire W between the clamps 70A and 70B is pressed with a constant pressure so that the tension is maintained.

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) that detects a change in the height of the outer end of the tension rod 74 in real time. It further includes a sensing block 75 for measuring the amount of tension fluctuation of W).

The sensing block 75 has a'c' shape with an open top surface, the outer ends of the tension rod 74 are accommodated in a'c'-shaped receiving groove, and the sensing unit is located on one or both sides of the receiving groove. It consists of an equipped optical sensor.

Therefore, the angle of the tension rod 74 can 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, and the outside of the tension rod 74 When the height of the stage is detected outside the error range, that is, when the tension of the wire W is out of the error range, an error notification and/or an emergency stop of the facility may be performed, thereby preventing the production of defective products in advance.

Next, as shown in FIGS. 2, 9, and 10, the discharge unit EU cuts the discharged wire W after the barb part B is molded at a certain length to discharge the suture S It includes a cutting portion 80 to be cut, and a pulling portion 90 for pulling the front end of the wire W before cutting.

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 foremost second clamp 70B. And, it includes a cutting block 82 on which the blade 81 is mounted, and a cylinder 83 for operating the cutting block 82 back and forth in a direction orthogonal 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) by the second frontmost clamp 70B and pulls the end portion by a predetermined distance.

The gripper 91 is a clamp type and can hold the end of the wire W, and is coupled to the guide frame 92 so as to move forward and backward, so as to move in the length direction of the wire W.

When the wire (W) is transferred, the discharge unit (EU) moves forward by the same distance by the gripper 91 interlocking 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) is discharged by falling through the discharge port formed in the bed,

The gripper 91 from which the suture (S) has been discharged is retracted again toward the foremost second clamp (70B) to hold the end of the wire (W) to prepare for the next operation.

On the other hand, the discharge unit (EU) is a reel shaft 111 on which a discharge reel (not shown) on which the suture (S) is wound is mounted, and a tension roller 114 that maintains the tension of the suture (S) wound on the discharge reel over a certain amount. ) Further includes a collection unit 110 provided with.

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 supply unit 40 and the tension control unit 50 described above, Detailed description of each configuration is omitted.

Thus, the discharge unit (EU),

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

And by winding the whole suture (S) into one, and dualizing it into a collection unit 110 that can be discharged,

By selectively using one of the pulling unit 90 and the cutting unit 80 or the collection unit 110, it is possible to process and produce the suture (S) according to the delivery method of the suture (S).

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

First, the supply reel with the wire W wound thereon is mounted on the reel shaft 41, and then the tension control unit 50, the tension fixing unit 60, the first and second clamps of the transfer means TM by unscrewing the wire W (70A) (70B) and to be seated in the lower mold 10 of the press unit (PU).

Then, when the facility is operated, the gripper 91 operates backward to hold the end of the wire W to be in a state of waiting for discharge.

When the work is started, the servomotor 43 first rotates and the wire W is released by a certain length. At this time, the tension roller 52 descends by a certain height to release the wire W released from the supply reel with a certain tension or more. To be maintained.

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

At this time, the advance distance of the first clamp 70A and the gripper 91 has the same distance as the distance of the barb part B, and after the processing of the barb part B is completed after the repeated advance operation of the first clamp 70A According to the length of each suture (S), the first clamp (70A) and the gripper (91) advance so that the wire (W) is transferred, that is, the suture (S) is discharged.

At this time, the tension roller 52 rises step by step by a predetermined height in accordance with the length at which the wire W is transferred forward by the first clamp 70A, while continuing to press the wire W before supplying downward (by pulling) the wire. Maintain the (W) tension.

In addition, the transferred wire W passes through the support block 71 and the push roller 62 of the tension fixing part 60 while maintaining a certain or more tension.

When the wire (W) is inserted 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 retracted back to its original position to prepare for the next transfer operation.

Thereafter, when the upper mold 20 descends, the barb forming stripper 22 contacts the lower mold 10, and the barb forming stripper 22 fixes the wire in the seating groove, and at this time, the upper mold 20 continues to descend. As the spring 24 is compressed, the first and second punches 30A and 30B are further lowered to perform press molding on the wire.

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

Thereafter, when the upper mold 20 rises, and the wire W is forwardly transferred 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. ) It is located at the bottom and stops.

And when the upper mold 20 descends again, the first punch (30A) is flattened for the circular wire (W), and at the same time, the second punch (30B) is withdrawn from the barbed stripper (22). As it descends toward the through hole 13, the blade head part 32 of the second punch 30B is cut while passing through a portion of one or both sides of the flattened wire WS, and the barb part B ) Press forming is made.

At this time, the cutting scrap cut from the wire by the blade head part 32 passes through the through hole 13 and is discharged to the discharge part 14, so that the cutting scrap sucked through the suction means is discharged to the outside of the press processing unit (PU). After being collected.

When the forming of the barb part (B) is completed, the first and second punches (30A) (30B), the stripper holder (21) and the barb forming stripper (22) rise in sequence while the upper mold (20) rises to form It enters the standby state, and even if a burr occurs on the cut surface of the wire (W) and the barb (B) due to contact when the second punch (30B) is raised or lowered, the burr is buried with the negative pressure applied to the through hole (13) Is absorbed and collected after discharge.

In addition, even when the second punch (30B), the stripper (21), and the upper mold (20) are affected so that the finished suture (S) rises together due to friction or static electricity when the upper mold (20) is raised, the suture ( S) is prevented from being lifted into the lower mold 10, so that 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 pressed portion at the interruption of the wire (W).

Thereafter, when the first clamp 70A and the gripper 91 transfer the wire W by the interval of the barb part B while the second clamp 70B is releasing the wire, the above-described process is repeated, A plurality of barbs (B) in the longitudinal direction of the wire (W) can be precisely processed to the same standard to produce suture (S).

At this time, in the present invention, since the press unit (PU) is installed in a pair of front and rear, it is possible to simultaneously process the barbs (B) at equal intervals in two places of the suture (S), so that the final discharged suture (S) A set of two barbs (B) is formed.

On the other hand, the tension of the wire (W) may be weakened due to the decrease in the strength of the wire (W) due to the forming of the barb (B) during the transfer of the wire (W). In the present invention, the tension rod 74 is a clamp (70A) Between (70B) (more strictly, the rear of the rearmost first clamp (70A), in front of the front end of the second clamp (70B) of each press unit (PU)), the wire being transferred for each predetermined length section Since the tension of (W) can be continuously detected, it is possible to prevent the forming interval of the barb (B) from changing according to the change of tension.

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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 equipment stop is made, thereby preventing the production of defective products of the suture (S), and material cost. It can provide savings and productivity improvement effects.

The present invention is 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, thereby reducing the barbs (B) of the suture (S). It can be precisely processed to the same standard, and provides the effect of reducing the manufacturing cost and improving productivity required for the suture (S) processing compared to the prior art, enabling mass production of suture.

In the above description of the present invention, a press molding apparatus for suture has been mainly described with reference to the accompanying drawings, but the present invention can be variously modified, changed, and substituted by those skilled in the art, and such modifications, changes and substitutions are the protection of the present invention. It should be construed as falling within the scope.

W: Wire WS: Flattened wire
S: suture
B: Barb part Ba: Separating part
SU: Supply unit TM: Transfer means
PU: Press unit EU: Discharge unit
10: lower mold 11: mounting block
12: mounting groove 13: through hole
14: discharge unit 15: suction connection
16: first guide hole 17: stopper
17a: through groove
20: upper mold 21: stripper holder
22: barbed stripper 24: spring
24a: piston 25: lifting block
26: elevator plate 27: second guide hole
28: guide rod
30: punch 31: rod portion
32: blade head portion 33: coupling portion
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 unit
61: support block 62: push roller
70A, 70B: Clamp 70C: Tension sensing unit
71: support block 72: pressure block
80: cutting part 81: blade
82: cutting block
90: pulling part 91: gripper

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 peripheral surface of the wire (W),
A supply unit (SU) for supplying a wire (W);
Transfer means (TM) for transferring the wire (W) in the longitudinal direction;
A discharge unit (EU) for collecting and discharging the suture (S) in which the barbs (B) are molded; And

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 mounted,
An upper mold 20 that rises and falls from the upper side of the lower mold 10,
When the upper mold 20 is lowered, the first punch 30A is flattened by pressing the wire W, and one end or both ends of the flattened wire W are cut by a press method to cut the barb part B. Including; a press unit (PU) including a second punch (30B) to be molded,

The shaft block 73 installed on one side of the wire W, arranged in a direction orthogonal to the longitudinal direction of the wire W, is hinged to the shaft block 73, and the inner end rotates downward by its own weight while the wire (W Press forming apparatus for suture, characterized in that it comprises a tension sensing unit (70C) consisting of a tension rod (74) for sensing the tension of the wire (W) while pressing the wire (W) to be maintained at a certain tension.
The method of claim 1,
The press unit (PU) is a press forming apparatus for suture, characterized in that a pair of front and rear spaced apart at a predetermined interval in the length direction of the wire (W) is installed.
The method of claim 1,
The transfer means (TM),
The first clamp that fixes and releases the wire (W) by a gripping operation, but is provided forward and backward in the longitudinal direction of the wire (W) between each unit (SU) (PU) (EU) to transfer the wire (W) forward (70A), and a second clamp (70B) fixed to the front and rear ends of the press unit (PU) to fix the wire (W) when forming the barb (B). Device.

The method according to any one of claims 1 to 3,
The upper mold 20 includes a barb-shaped stripper 22 coupled to be lifted and lowered separately from the upper mold 20,
The barb forming stripper 22 includes an elevating hole through which the second punch 30B passes up and down, and the barb forming stripper 22 with respect to the upper mold 20 is formed by a spring 24. It is elastically supported downward,
When the upper mold 20 is lowered, the second punch 30B is further lowered while the barbed stripper 22 fixes the flattened wire W, thereby forming the barb part B. Press molding device for suturing.

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