KR20200000816A - Press cutting equipment for suture - Google Patents

Abstract

The present invention relates to a suture press molding apparatus for molding a barb unit on an outer circumferential surface of a surgical suture used when suturing a muscle or a skin of a human in a surgical suture operation of a human or an animal, particularly a plastic surgery. More specifically, the present invention relates to a suture press molding apparatus. To this end, by including a punch which compresses a circular wire by a pressing method and then cutting the same to form the barb unit on one or both sides of the outer circumferential surface of the wire, it is possible to reduce production costs and improve productivity.

Description

PRESS CUTTING EQUIPMENT FOR SUTURE}

The present invention relates to a suture press molding apparatus for shaping a barb on an outer circumferential surface of a surgical suture used when suturing a muscle or a skin of a human in a surgical suture operation of a human or an animal, particularly a plastic surgery. The present invention relates to a press forming apparatus for suture that can reduce manufacturing cost and improve productivity, including punches formed by pressing and cutting a circular wire in a press manner to form barbs on one or both sides of the outer circumferential surface of the wire.

In general, when sutures, in particular plastic surgery suture using a general suture (wire, thread), the effect of molding is halved, the skin tissue was not fixed, that is, did not grab the appearance after surgery there was a problem in poor appearance.

In particular, with the recent increase in interest in maintaining or preventing skin aging, many other methods (cosmetics, massages, etc.) have been used, but the effect cannot be directly expected, and many people have performed skin wrinkle removal surgery. Received.

The suture itself is provided with a barb protruding in one direction on the outer circumferential surface of the suture in place of the conventional suture (wire), which has been conventionally used in wrinkle removal plastic surgery. There are many techniques for sutures that can facilitate wrinkle removal by pulling.

As a conventional technology related to such a surgical suture, there is a Republic of Korea Patent Publication No. 10-2005-0108494 (2005.11.17) "Operational surgery room having a projection",

The present invention relates to a plastic surgery operating room used for wrinkle removal surgery, etc. Specifically, to form a conical projection on the surface of the thread and to increase the surgical effect by inclining the projection in a predetermined direction, and further conical shape of the thread The projection is characterized in that it is formed to be inclined sharply toward both ends with respect to the center reference line with respect to the longitudinal direction of the yarn having a predetermined length.

In order to automatically form and shape protrusions (hereinafter, commonly referred to as barbs) on the outer circumferential surface of the operating room (hereinafter, referred to as suture) as described above, the structure and driving of the manufacturing apparatus must be made very precisely and finely.

In other words, the surgical suture is very thin, unlike the general thread, so that the molding work must be made very precisely to form fine barbs at a uniform height and thickness in such a thin suture. Since the molding apparatus used for molding is inferior in precision of molding, in the case of fine sutures, an operator molds the barbs by hand manually without using an automated molding apparatus.

In order to solve the above problems, there is a Republic of Korea Patent Publication No. 10-2012-0022360 (2012.03.12) "the manufacturing device of the surgical suture and the 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 that can form a spiral barb on the surface of the resin in the process of molding the resin by rotating the extrusion mold formed with a molding blade on the main body of the extrusion machine for molding the suture.

However, the suture manufacturing apparatus according to the prior art is very expensive extruder itself, it is very expensive to manufacture by installing a separate extrusion mold to be rotated in such an expensive extruder is very expensive,

In addition, when the extrusion mold is rotated in the nozzle portion of the apparatus for extruding the resin heated by high heat, it is difficult to ensure the watertightness between the nozzle portion and the extrusion mold, the technique of the above patent discloses mass production, Due to problems of unit price competitiveness and watertightness, it is a technology that is difficult to commercialize due to its lack of practicality.

In addition, the shaping of the barbs using the molding blade of the extrusion mold while extruding the surgical suture with a very thin thickness has a risk of breaking and damaging the barbs before the resin is cooled during extrusion, considering the fine thickness and height of the barbs. Large, there is a problem that the molding blade is easy to close during the extrusion operation,

In particular, the protruding height, angle, length, spacing, etc. of each barb portion must be precisely molded in the same manner without any errors, so that an excellent effect can be expected as a suture. There is a falling problem.

Therefore, there is a need for a technology capable of precise and meticulous molding, such as molding of the barb part through conventional manual work, while reducing manufacturing cost and improving productivity.

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

In order to precisely produce all the barbs on the outer circumferential surface of the wire with the same standard, and to reduce manufacturing cost and improve productivity, the circular wire is crimped and cut by pressing to process the barb on one side or both sides of the wire. It is an object of the present invention to provide a suture press-molding apparatus which can be processed while variously changing the protrusion direction of the barb portion as necessary.

In the suture press forming 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;

Conveying means for conveying the wire in the longitudinal direction;

A discharge unit for collecting and discharging the sutures in which the barbs are formed; And

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

Lower mold seated on the wire in the longitudinal direction,

An upper mold which is lowered from an upper side of the lower mold,

And a press unit including a first punch to press and flatten a wire when the upper mold is lowered, and a second punch to cut one or both ends of the flattened wire by a press method to form the barb. do.

And in the suture press forming apparatus,

The press unit is characterized in that the front and rear pairs are provided spaced apart by a predetermined interval in the longitudinal direction of the wire.

Furthermore in the suture press forming apparatus,

The wire transfer means,

The first clamp clamps and releases the wire by gripping operation, and is provided forward and backward in the longitudinal direction of the wire between each unit, and is fixed to the front and rear ends of the press unit to fix the wire when forming the barb. It characterized in that it comprises a second clamp for fixing the.

Also in the suture press forming apparatus,

The upper mold includes a barbed stripper coupled to the elevating separately from the upper mold,

The barbed stripper includes a lifting hole through which the second punch penetrates up and down, and the barbed stripper is elastically supported downward by a spring with respect to the upper mold,

When the upper die is lowered, the barb forming stripper is characterized in that the forming of the barb while the second punch is further lowered while fixing the flattened wire.

Suture press forming apparatus according to the present invention,

After pressing the circular wire by pressing, a part of the outer circumference is cut to process the barb, and all the specifications of the barb can be precisely molded.

The part of the barb is formed while the wire is twisted so that it can be produced by variously changing the direction of the barb,

By forming a barb on one side or both sides of the flat crimped wire, it is possible to prevent breakage of the wire or poor thickness during processing.

The cutting scrap generated after cutting is quickly separated and discharged by suction method to prevent the occurrence of cutting burrs in the suture, thereby improving the quality of the suture.

By reducing the defective rate generated during processing, it is possible to reduce the manufacturing cost and improve productivity.

1 is a plan view showing a suture formed by the present invention.
2 is a conceptual view schematically showing a press forming 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 forming apparatus according to the present invention.
5 is a plan view showing a lower mold and a stripper holder according to the present invention.
Figure 6 is a front view and 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.
8, 9 is a perspective view of the suture press forming apparatus according to the present invention.
10 is a front view of the suture press forming apparatus according to the present invention.

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

In each of the drawings, the same reference numerals, in particular, the tens and ones digits, or the same digits, tens, ones, and alphabets refer to members having the same or similar functions, and unless otherwise specified, each member in the figures The member referred to by the reference numeral may be regarded as a member conforming to these criteria.

In addition, in the drawings, the components are exaggerated in size (or thick) in size (or thick) in size (or thin) or simplified in consideration of the convenience of understanding and the like, thereby limiting the scope of protection of the present invention. It should not be.

The terminology used herein is for the purpose of describing particular embodiments (suns, aspects, and embodiments) (or embodiments) only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

 In this application, the terms “comprises” or “consists” are intended to indicate that there is 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 the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

In the present specification, the first to second and the second to refer to different components are not limited to the order of manufacture, and their names are used in the detailed description and claims of the present invention. May not match.

In the description of the suture press forming apparatus according to the present invention, for the sake of convenience, the non-strict approximate direction reference is specified with reference to [A] of FIG. 2, and the direction in which gravity acts downward is as shown in the up, down, left, and right directions. In the description and claims of the invention in conjunction with the other figures, unless otherwise specified, the direction is specified and described in accordance with this criterion.

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

Press forming apparatus for suture according to the present invention is a device for cutting after pressing the bar portion (B) of various shapes in a press method on one side or both sides of the outer peripheral surface of the wire (W) in the longitudinal direction,

As shown in Figure 1, the supply unit (SU) for largely supplying the wire (W) before processing, the conveying means for transferring the wire (W) in the longitudinal direction, the suture (S) formed with the barb (B) is formed Press processing for discharging the discharge unit (EU) to discharge, the supply unit (SU) and the discharge unit (EU) is pressed to compress the wire (W) and then press-molded the barb (B) to the flattened wire (WS) It includes a unit PU.

The supply unit (SU) and the discharge unit (EU) is connected to the wire (W) and suture (S) (wire (W) and suture (S) connected before cutting after processing depending on whether there is a barb (B) for convenience) As a distinction, substantially both ends of the wire and the suture are connected to one thread in the pre-cutting stage), so that the reel rotation and / or discharge unit (EU) of the supply unit SU The gripper 91 is moved back and forth (or reel rotation) of the gripper 91 to pass through the wire (W) to the press processing unit (PU) to be made after the supply of the wire (W) and discharge of the suture (S).

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

The press processing unit (PU) is large, the lower mold 10 is fixedly installed on the upper bed, the upper mold 20, the mold and the mold closing and lifting up and down in the upper upper mold 20, the upper mold 20 in the upper mold 20 A first punch 30A for raising and lowering the flat wire W and flattening the wire W and a second punch 30B for cutting and forming the barb B on the flattened wire WS.

Specifically, the lower mold 10 is a wire (W) being transported in the longitudinal direction is seated, the seating block 11 for supporting the wire (W) to be pressed on the mold base upper surface is coupled, the seating The upper surface of the block 11 is provided with a recess recess 12 formed in the longitudinal direction of the wire (W) to be concave downward to insert the wire (W).

At this time, the seating groove 12 is wider than the diameter of the circular wire (W) in the state before processing, the concave shape is formed with a lower height, the first punch 30A descending flat and flatten the circular wire (W) After pressing, the second punch 30B lowering one side or both ends of the flattened wire WS is cut to form the barb B.

That is, in the press working for shaping the barb B, the circular wire W entering the press unit PU is flattened flatly while passing through the first punch 30A, and thus the flattened wire WS The cutting molding of the bar 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 the suction means (not shown) and the cutting scrap is adsorbed and discharged.

To this end, the discharge hole 14 is provided at the lower portion of the passage hole 13 to integrate the passage holes 13 into one flow path, and the discharge portion 14 is connected to a suction connection part (not shown) connected to the outside of the mold. In communication, suction means such as a compressor is connected.

The lower mold 10 is subjected to a negative pressure for vacuum adsorption on the through hole 13 and the discharge part 14 by the suction means, and is cut below the through hole 13 by the second punch 30B. 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 lifting and lowering of the upper mold 20 during mold opening and closing.

Furthermore, the lower mold 10 includes a stopper 17 for preventing the suture S from escaping upward from the lower mold 10 after forming the barb B (see FIG. 7).

The stopper 17 is provided on the front side and / or rear side (wire length reference) of the seating block 11 (more precisely, the portion where the second punch 30B is raised and lowered) and is connected to the wire W. And / or press the suture S to lift the barbed stripper 22 and / or the second punch 30B together, thereby suturing the suture S together to prevent the suture S from escaping from the seating groove 12, It is coupled to the upper surface of the lower mold 10 in the form of covering a part of the mounting groove 12 in the direction orthogonal to the (12).

Next, the upper mold 20 is installed to ascend and descend from the upper side of the lower mold 10, and the first punch 30A and the flattened wire WS to flatten the flat wire W flat when descending. Second punch 30A for forming the barb B by partially cutting one end or both ends of the wire WS fixed by the barb stripper 22 and the barb stripper 22 fixed by pressing. It includes.

In detail, the upper mold 20 includes a barb forming stripper 22 formed on the 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 penetrates up and down, and the barb stripper 22 is elastically lowered by a spring 24 with respect to the upper mold. Supported,

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

To this end, the upper mold 20 has a spring 24 for pressing the piston 24a on one side of the mold base, and a stripper holder 21 having a barbed stripper 22 on the lower end of the piston 24a. ) Is coupled, and the elastic force generated when the spring 24 is compressed when the mold closing of the upper mold 20 is completed is transmitted to the stripper holder 21 through the piston 24a, so that the barbed stripper 22 is flattened. Press WS) to lock it in place.

In addition, the stripper holder 21 and the barb forming stripper 22 is provided with a lifting hole (not shown) formed to penetrate up and down, and the first and second punches 30A and 30B are fitted into each lifting hole, An elevating block 26 having an engaging portion 33 of the first and second punches 30A and 30B is engaged to the elevating hole and an elevating plate 27 is provided on an upper surface of the elevating block 26. In combination, when the upper die 20 is raised and lowered, the first and second punches 30A and 30B are lifted and lowered separately from the barbed stripper 22 by the spring 24.

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 guide hole. And the second guide holes 16 and 27 are inserted to guide the lifting and lowering operation of the upper die 20, the stripper holder 21, and the second punch 30B.

The first punch 30A and the second punch 30B are provided to ascend and descend the top and bottom stripper holder 21 and the barb forming stripper 22, respectively. 30A is flattened by flat pressing a portion of the rear end portion of the circular wire W entering the lower mold 10, and the second punch 30B is flattened by the first punch 30A. A part of one side or both ends of the die is cut by a press method to form the barb B.

The first and second punches 30A and 30B are rod portions 31 having predetermined lengths up and down, and coupling portions 33 protruding from both sides of the upper side of the lor portions to be engaged with the elevating block 26. To include, but the second punch 30B is a blade head portion 32 protruding in a shape corresponding to the spacing (Ba) between the barb portion (B) on one side of the lower side of the rod portion 31 On the other hand, the first punch (30A) is different in that there is no blade head portion (32).

The rod portion 31 of the second punch 30B has a square pillar shape, and the protruding blade head portion 32 is connected to have a predetermined length up and down. In this case, the cross-sectional shape of the blade head portion 32 is suture thread. (S) may vary depending on the shape of the barb (B).

That is, for example, as shown in the drawing, when both of the barbs B have an arrow shape, the blade head part 32 is adapted to the distance between the barbs B so that each of the barbs B of the adjacent arrow shape has a shape. It has the shape of the remaining part that connects the long side and short side.

The press unit PU is provided with a pair before and after spaced apart a predetermined interval in the longitudinal direction of the wire (W).

Through this, the bar portion B may be simultaneously processed in a pair before and after a predetermined length of the wire W, and the suture S thus processed may be folded to the bar portion B by folding the interruption portion between the barbs B. ) Can be used as a double suture overlapping each other.

Of course, by adjusting the processing interval of the bar portion (B) with only one press unit (PU) can be suitably processed in the double suture, in this case, the spacing of the bar portion (B) of the double suture, and the individual suture of the cut Since the intervals between the barbs B do not coincide with each other, the operation control of the conveying means becomes complicated, so that the operation stability and productivity can be improved through the pair of press units PU.

Subsequently, as illustrated in FIGS. 2 and 8, the supply unit SU is sequentially installed between the supply unit 40 on which the wire W waits, and the supply unit 40 and the press unit PU. Tension control part 50 which allows the wire W to be conveyed from the supply part 40 with tension maintained tightly, and a tension fixing part which flatly press-bonds the wire W before being supplied to the press unit PU. (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 for adjusting and fixing the position of the supply reel. A mounting plate 42 for pressurizing 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 interlock with each other so that the wire W is unwound and transferred from the supply reel.

The tension control unit 50 is arranged in a vertical zigzag form 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. The lifting roller includes a tension roller 52.

The tension roller 52 pulls and supports the wire W in a direction opposite to the fixed guide roller 51 so that the wire W is maintained at a predetermined tension or more, that is, unwinded in a tense state to supply and wait. .

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

The front and rear ends of the push roller 62 is provided with a fixed roller 63 for horizontally holding the wire W between the guide roller 51 and the first clamp 70A, the push roller 62 is a cylinder The lowering operation to the lower height than the fixed rollers (63) through 64, by pressing the circular wire (W) passing through the support block 61 to hold.

Next, as shown in Figures 2 and 9, the conveying means (TM) is fixed and released from the wire (W) by the holding operation, the wire (W) between each unit (SU) (PU) (EU) And a first clamp 70A for forward and forward movement of the wire W, and fixed to the front and rear end sides of the press unit PU, and the wire W when forming the barb B. It includes a second clamp (70B) for fixing the.

The first and second clamps 70A and 70B are supported by a support block 71 on which a wire W is supported on an upper side thereof, and is operated up and down on an upper portion of the support block 71 to fix the wire W and Composed of a pressure block 72 for releasing the fixed, in the figure is an embodiment in which the pressure block 72 is hinged to the support block 71 hinged to the support block 71 so that the pressure block 72 is a seesaw movement through the cylinder is made; Although shown as, the pressure block 72 by the cylinder is also possible to operate directly up and down operation.

The first and second clamps 70A and 70B have the same configuration in that the wires W are fixed or released by the gripping operation of the wires W, but the first clamps 70A have a While the second clamp 70B is installed in the longitudinal direction so as to be movable forward and backward, there is a difference in that the second clamp 70B is fixed and installed without moving from the front and rear ends of the press unit PU. 70A and 70B perform the fixing and unlocking operations opposite to each other, so that the transport and fixing of the wire W are made.

That is, when the first clamp 70A moves forward by fixing the wire W, the second clamp 70B releases the fixing on the wire W to enable forward transfer of the wire W, and vice versa. When the first clamp 70A releases the wire W and performs the reverse operation, the shaping process of the bar portion B through the press unit PU while the second clamp 70B fixes the wire W is performed. This is done.

Furthermore, the conveying means TM is provided on one side of the wire W so that the wire W during conveying between the clamps 70A and 70B can be kept tightly tensioned by a predetermined or more tension. , The wire W is arranged in a direction orthogonal to the longitudinal direction of the wire (W) is hinged to the shaft block (73) by pressing the wire (W) to keep the wire (W) at a constant tension while the inner end is rotated downward by its own weight It further includes a tension sensing unit 70C consisting of a tension bar 74 for sensing the tension of the wire (W).

The tension rod 74 is hinged to the shaft block (73) is coupled to the inner end, the outer end of the seesaw movement up and down, wherein the inner end relative to the axis of the seesaw movement is coupled longer than the outer end, 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 at a constant pressure to maintain the tension.

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

The sensing block 75 has an 'c' shape having an upper surface open, and an outer end of the tension rod 74 is accommodated in the 'c' shaped receiving groove, and the sensing part is disposed on one side or both sides of the receiving groove. It consists of an optical sensor provided.

Accordingly, the angle of the tension rod 74 may be changed up and down according to the tension of the wire W being transferred. In this case, the height of the outer end of the tension rod 74 may be sensed by a sensing unit in real time, and the tension rod 74 may be outside. 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, error notification and / or emergency stop of the equipment can be made, thereby preventing the production of defective products.

Next, as shown in Figures 2, 9 and 10, the discharge unit (EU) is cut the wire (W) discharged by forming the barb (B) is completed in a predetermined length discharge the suture (S) Cutting portion 80 and a pulling portion 90 that pulls the front end side of the wire W before cutting.

The cutting portion 80 cuts the wire W (sewing thread S) pulled by the gripper 91 of the pulling portion 90, and is installed adjacent to the front end side of the frontmost second clamp 70B. And a cutting block 82 having a blade 81 mounted thereon, 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 unit 90 includes a gripper 91 that grips the end of the wire W (suture thread S) at the foremost second clamp 70B and pulls it by a predetermined distance.

The gripper 91 may hold the end of the wire W in a tong type, and may be coupled back and forth along the guide frame 92 to move in the longitudinal direction of the wire W. FIG.

The discharge unit EU is moved forward by the same distance in conjunction with the first clamp (70A) gripper 91 when the wire (W) is transferred,

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 to cut the suture. (S) is discharged through the outlet formed in the bed is completed,

The gripper 91 which discharged the suture S returns back to the foremost second clamp 70B again, grasps the end of the wire W, and prepares for the next operation.

Meanwhile, the discharge unit EU includes 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 for inducing the tension of the suture S wound on the discharge reel to a predetermined level or more. It further comprises a collecting unit 110 having a).

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

The discharge unit (EU)

Pulling unit 90 and the cutting unit 80, which can be cut and discharged into a single suture (S),

And by dualizing the collection unit 110 to wind the entire suture (S) in one, and discharged,

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

On the other hand, although not shown in the drawings, the present invention further includes a wire rotating part 3 for changing the forming position of the barb B by rotating the wire W before processing.

The wire rotating part 3 is provided with the above-described clamps and grippers on the front and rear ends of each press unit PU or the rear end side of the supply unit SU and the front and rear sides of the discharge unit EU to hold the wire. The position of the processing surface can be changed by rotating the wire before press working in one direction or in both directions in the circumferential direction.

Next, the specific operation | movement of the press molding apparatus for suture S of the said structure is demonstrated.

First, the supply reel in which the wire W is wound is mounted on the reel shaft 41, and then the wire W is released to release the tension control part 50, the tension fixing part 60, and the first and second clamps of the transfer means TM. 70A and 70B and the lower mold 10 of the press unit PU.

Then, when the equipment is operated, the gripper 91 is reversed to grab the end of the wire (W) to be discharged.

When the operation is started, the servo motor 43 is rotated first to unwind the wire W by a certain length. At this time, the tension roller 52 descends by a certain height, thereby unwinding the wire W unwound from the supply reel with a predetermined tension. To be maintained.

In a state in which the second clamps 70B release the wire W, the first clamps 70A move forward by a predetermined distance after fixing the wire W, 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. FIG.

At this time, the advance distance of the first clamp 70A and the gripper 91 has the same distance as the spacing of the barb B, and after the processing of the barb B is completed after the repeated forward operation of the first clamp 70A, According to the length of the suture S, the first clamp 70A and the gripper 91 are advanced to transfer the wire W, that is, discharge the suture S. FIG.

At this time, the tension roller 52 is stepped up by a predetermined height in accordance with the length at which the wire W is moved forward by the first clamp 70A, and the wire W before supply is continuously pressed downwards (pull out). Maintain the tension of (W).

And the wire (W) to be conveyed is passed through the support block 71 and the push roller 62 of the tension fixing part 60 is maintained a predetermined tension or more.

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

Then, when the upper mold 20 is lowered, the barbed stripper 22 contacts the lower mold 10, and the barbed stripper 22 fixes the wire of the seating groove, and 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 press-press the wire.

Specifically, first, the first punch 30A is lowered to be completely in 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 seating groove 12, and the wire on the seating groove 12 is flattened by a strip (strip) improvement.

Thereafter, when the upper die 20 is raised, and then 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 the second punch 30B. Stop at the bottom.

When the upper die 20 is lowered again, the flattening molding is performed on the circular wire W by the first punch 30A, and the second punch 30B is withdrawn from the barbed stripper 22. While lowering toward the through hole 13, the cutting head 32 of the second punch (30B) is cut while passing through one or both sides of the flattened wire (WS), barb (B) Press molding is performed.

At this time, the cutting scrap cut from the wire by the blade head 32 is discharged to the discharge portion 14 through the through hole 13, the cutting scrap sucked through the suction means is discharged to the outside of the press processing unit (PU). Then collected.

When the shaping of the bar portion B is completed, as the upper mold 20 rises, the first and second punches 30A and 30B, the stripper holder 21 and the barb forming stripper 22 are sequentially raised and formed. When the burr is generated on the cut surface of the wire W and the barb B due to the contact when the second punch 30B is raised and lowered, the burr is applied with the negative pressure applied to the through hole 13. Is adsorbed and collected after discharge.

In addition, even if the sutures S, which are processed due to friction or static electricity when the second punch 30B, the stripper 21, and the upper mold 20 are raised, are affected to rise together, the suture is stopped by the stopper 17 ( By preventing S from being lifted by the lower mold 10, the suture S is not detached from the mounting groove 12.

When one cycle of the process is completed as described above, a plurality of barbs B are formed at predetermined intervals on one side or both sides of the flat crimped portion when the wire W is stopped.

Thereafter, when the first clamp 70A and the gripper 91 transfer the wire W by the interval of the barb B while the second clamp 70B releases 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 a suture (S).

At this time, the present invention, because the press unit (PU) is spaced apart in front and rear pairs, simultaneous processing of the barbs (B) at two places of the suture (S) is possible at the same time, the final discharged suture (S) Two sets of barbs B are formed.

Furthermore, if the wire is rotated at an angle through the wire rotation part after the process of one cycle (or a plurality of cycles) is completed according to the suture (S) standard, the direction of the barb B to be processed is changed, The protrusion direction of the barbs B may be variously changed.

That is, for example, before the machining of the wire W transported after the processing of the bar part B again, the wire rotating part is operated to resume the press working in the state where the wire W is rotated 90 degrees. ) Projects to intersect before and after the "+" character,

Therefore, it is possible to further improve the function as the suture by changing the protrusion direction of the barb (B) in accordance with the angle to rotate the wire (W) before processing.

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 bar (74) is clamp (70A) Wires provided between the 70Bs (more precisely behind the rearmost first clamp 70A and the front of the front side second clamp 70B of each press unit PU) and being transported for each predetermined length section. Since the tension of (W) can be continuously detected, it is possible to prevent the molding interval of the barb B from changing according to the tension change.

In addition, when the tension of the wire (W) is changed to more than the error range, the sensing block 75 immediately detects this error notification and / or equipment stop is made, thereby preventing the production of defective products of the suture (S), material costs It can provide savings and productivity.

The present invention press-molded the wire (W) flat crimped through the press pressing of the first punch (30A) to the second punch (30B) in the correct position, thereby reducing the bar portion (B) of the suture (S) Can be precisely processed to the same standard, it provides a reduction in manufacturing cost and productivity improvement effect required for the suture (S) processing compared to the conventional, thereby enabling the mass production of sutures.

In the above description of the present invention with reference to the accompanying drawings described with reference to the accompanying press forming apparatus for sutures, the present invention is capable of various modifications, changes and substitutions by those skilled in the art, such modifications, changes and substitutions are the protection of the present invention Should be interpreted as being within the scope.

W: Wire WS: Flattened Wire
S: Suture
B: barb Ba: spacing
SU: Supply unit TM: Transfer means
PU: Press Unit EU: Discharge Unit
10: lower mold 11: seating block
12: seating groove 13: through hole
14 outlet 15: suction connection
16: first guide hole 17: stopper
17a: Passing groove
20: upper mold 21: stripper holder
22: barb forming stripper 24: spring
24a: Piston 25: Lifting Block
26: the lifting plate 27: the second guide hole
28: guide rod
30 punch 31 rod part
32: blade head portion 33: coupling portion
40: supply part 41: reel shaft
42: mounting plate 43: servo motor
50: tension control unit 51: guide roller
52: tension roller 60: tension fixing
61: support block 62: push roller
70A, 70B: clamp 70C: tension detector
71: support block 72: pressure block
80: cutting portion 81: blade
82: cutting block
90: pull 91: gripper

Claims (4)

In the suture press forming 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;
Conveying means for conveying the wire in the longitudinal direction;
A discharge unit for collecting and discharging the sutures formed by the barb; And

It is installed between the supply unit and the discharge unit,
Lower mold seated on the wire in the longitudinal direction,
An upper mold which is lowered from an upper side of the lower mold,
And a press unit including a first punch to press and flatten a wire when the upper mold is lowered, and a second punch to cut one or both ends of the flattened wire by a press method to form the barb. Suture press forming apparatus.
The method of claim 1,
The press unit is a suture press forming apparatus, characterized in that the front and rear pairs are provided spaced apart in the longitudinal direction of the wire.
The method of claim 1,
The wire transfer means,
The first clamp clamps and releases the wire by gripping operation, and is provided forward and backward in the longitudinal direction of the wire between each unit, and is fixed to the front and rear ends of the press unit to fix the barb. Suture press forming apparatus comprising a second clamp for fixing the.
The method according to any one of claims 1 to 3,
The upper mold includes a barbed stripper coupled to the elevating separately from the upper mold,
The barb forming stripper includes a lifting hole through which the second punch penetrates up and down, the barb forming stripper is elastically supported downward by a spring with respect to the upper mold,
When the upper mold is lowered, the bar forming stripper press forming apparatus for suture is formed while the second punch is further lowered while fixing the flattened wire.

Images