Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; coupled "or" connected "
It is to be understood that the present invention may be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The present invention should not be construed as limited to the embodiments described in Figs.
Referring to the drawings, a gripper assembly for manufacturing a suture thread according to the present invention comprises a gripper assembly having at least one gripper arranged to hold a suture thread 2 from both ends of a supply part provided in a main body, And a grip operating portion 32 for gripping the suture thread 2 by means of two first grippers and a second gripper constituting the gripper assembly, (2) having a plurality of barbs formed on the surface of the suture yarn (2) by means of a barbed knife while the first gripper (30) and the second gripper grip the suture thread (2). The grip operating portion 32 is configured to release the grip state of each of the first gripper 30 and the second gripper to which the suture thread 2 is applied. The gripper assembly of the present invention can be applied to any suture production apparatus that processes a plurality of barbs on a suture. The suture production apparatus described in the present invention can be used for supplying a suture to a transfer line of a main body 10 constituting a main body of the apparatus. And a transfer operation part for moving the gripper assembly in a reciprocating manner on the transfer line of the main body and a gripper assembly for gripping and transporting the suture, a processing knife for processing the barb on the suture, . The gripper assembly corresponds to the present invention. It is to be noted that the suture production apparatus described below is one of the embodiments employing the gripper assembly of the present invention.
Referring to the drawings, a gripper assembly for manufacturing a suture thread according to the present invention includes at least a gripper arranged to hold a suture thread 2 from both ends of a supply part 20 provided in a main body 10 constituting a body of a suture- And grip operating means for gripping the suture 2 by means of two first grippers 32 and second grippers 34 constituting the gripper assembly 30, The first gripper 32 and the second gripper 34 grip the suture yarn 2 while being gripped by the grip operating means so that a plurality of barbs are formed on the surface of the suture yarn 2 by a barbed knife, (2). The grip operating means is configured to release the first gripper 32 and the second gripper 34 gripping the suture thread 2, respectively. In the present invention, the grip operating means is constituted by a first grip cylinder 31 and a second grip cylinder 35 which will be described later. The gripper assembly of the present invention can be applied to any suture production apparatus that processes a plurality of barbs 2a on a suture 2. The suture production apparatus described in the present invention can be applied to a main body 10 constituting a main body of the apparatus, A feeder 20 for supplying the suture 2 to the transfer line of the main body 10 and a gripper assembly for gripping and transferring the suture 2 to the next end transfer line of the main body 10, And a transfer operation part 40 for allowing the gripper assembly to be reciprocated on the transfer line of the main body 10. [ It is noted that the present invention is the gripper assembly, and that the suture production apparatus described below is one of the embodiments employing the present gripper assembly.
The main body 10, which is the main body of the suture production apparatus, has a hexahedral box shape (hexahedral body shape). In addition, the main body 10 is provided with a transfer line from one side to the other side, and a guide rail 12 is provided along the transfer line.
The feeding part 20 includes a feeding bobbin 22, a guide roller 24, a weight 28, and a feeding bobbin 22 supported by a supply support frame 21 provided in an upright direction on the feeding end side of the suture thread 2 of the main body 10 And a feeding block 26 in which the end of the suture 2 comes out to the front face by a predetermined length.
The feeding bobbin 22 is horizontally rotatably mounted on the supply support frame 21 of the main body 10. In the feeding bobbin 22, the suture yarn 2 is wound around the yarn feed yarn 2a in which the barb 2a is not yet formed.
And a first guide roller 24a is rotatably coupled to the supply support frame 21 so as to be disposed below the feeding bobbin 22. The suture thread 2 released from the feeding bobbin 22 passes over the outer peripheral surface of the first guide roller 24a.
A second guide roller 24b, a third guide roller 24c and a fourth guide roller 24d which are rotatably supported by the supply support frame 21 are provided at a position below the first guide roller 24a. The second guide roller 24b and the third guide roller 24c are arranged side by side and the fourth guide roller 24d is disposed slightly below the positions of the second guide roller 24b and the third guide roller 24c . The fourth guide roller 24d is disposed adjacent to the inflow end of the feeding hole into which the suture thread 2 of the feeding block 26, which will be described later, enters. In the present invention, the guide roller 24 includes the first guide roller 24a, the second guide roller 24b, the third guide roller 24c, and the fourth guide roller 24d. The guide roller 24 is passed through an outer circumferential surface of the suture thread 2 released from the feeding bobbin 22.
A pair of weight guide bars 28a are arranged in the left and right directions so as to be disposed below the guide rollers 24 in the entire front surface of the supply support frame 21. [ Each weight guide bar 28a is arranged in the vertical direction.
A weight 28 is slidably engaged with the weight guide bar 28a. A pair of slide holes vertically communicating with each other inside the both end sides of the weight 28 are slidably and slidably engaged with the respective weight guide bars 28a so that the weight 28 along the weight guide bar 28a And can be lifted and lowered. Further, a weight roller 28b is provided in the weight 28. [ The outer surface of the weight roller 28b passes through the suture 2.
Therefore, the suture thread 2 released from the feeding bobbin 22 passes through the first guide roller 24a, the second guide roller 24b, and the third guide roller 24c, Passes through the outer circumferential surface of the first guide roller 28b, and then passes over the outer circumferential surface of the fourth guide roller 24d.
The suture 2 passed through the outer peripheral surface of the weight roller 28b and the guide roller 24 enters the feeding hole inside the feeding block 26. [ The feeding block 26 is formed in a rectangular block shape having a feeding hole communicated on both sides thereof. The feeding block 26 has a feeding end (sewing thread 2 The feeding block 26 is disposed at the next end position of the fourth guide rail 12 with respect to the conveying line leading to the conveying line leading to the conveying line leading to the conveying line. The suture 2 of the feeding block 26 may be referred to as a feeding inlet and the suture 2 may be referred to as a feeding outlet. Enters from the feeding inlet end of the feeding hole formed in the feed hole 26, and comes out to a feeding outlet end of the feeding hole by a predetermined length. At this time, since the suture 2 is in the on state through the weight roller 28b provided in the weight 28, the weight of the weight 28 causes the suture 2 ) Is stretched in the horizontal direction without being laid down or raised. That is, the pulled-out portion of the suture thread 2 coming out from the discharge end of the feeding block 26 is kept upwards or downwardly without being laid down and extended in the horizontal direction. The weight 28 of the suture thread 2 act so that the pulled-out portion of the suture thread 2 remains exactly in the horizontal direction.
The main body 10 is provided with a guide rail 12 so as to be disposed in front of a supply support frame 21 on which a guide roller 24 and a weight 28 are mounted. The guide rail 12 may be an LM guide. The guide rail 12 extends in a direction parallel to the transfer line of the main body 10. At this time, the bottom surface of the guide rail 12 is separated from the upper surface of the main body 10 by the legs. The bottom of the guide rail 12 is spaced from the upper surface of the main body 10 by a predetermined distance since the leg provided on the bottom surface of the guide rail 12 is fixed to the upper surface of the main body 10. [ In addition, a position sensor supported by a bracket is provided on the path of the guide rail 12.
The main body 10 is provided with a gripper to be reciprocally transported along a transfer line. The main body 10 is provided with the guide rail 12 in parallel with the transfer line of the suture thread 2 so that the gripper is reciprocated along the guide rail 12. A first gripper 32 and a second gripper 34 arranged to be spaced apart from each other by a predetermined distance on a transfer line of the main body 10 are reciprocated in the transfer line. The structure of the second gripper 34 will be described in more detail below.
The guide rail 12 is slidably coupled with a moving plate 31MP having a substantially rectangular plate shape.
A first gripper support frame 32SP is provided on one upper surface of the moving panel 31MP and a second gripper support frame 34SP is provided on the other upper surface of the moving panel 31MP. And a second gripper support frame 34SP is provided on the side of the first gripper support frame 32SP.
The first gripper support frame 32SP is provided with a first grip cylinder 31. The first grip cylinder 31 is provided with the first gripper 32 so that the pair of first grip pieces 32G of the first gripper 32 are moved in the forward and backward directions of the cylinder rod of the first grip cylinder 31, Are narrowed to the original position in a state where they are flared or flared. At this time, one of the first grip pieces 32G of the pair of first grip pieces 32G of the first gripper 32 is engaged with the other first grip piece 32G by the cylinder rod operation of the first grip cylinder 31, And a movable grip piece which fires in the first gripping part 32G and returns to the original position, and the other first gripping part 32G can be constituted by a fixed gripping piece. When the cylinder rod of the first grip cylinder 31 advances, the pair of first grip pieces 32G spread apart to spread the contact surfaces of the pair of first grip pieces 32G, and the first grip cylinder 31 The pair of first grip pieces 32G are narrowed to their original positions so that the surfaces of the pair of first grip pieces 32G abutting each other can grip the suture 2. [ .
The first pair of grip pieces 32G may be a lower first grip piece 32LG and a first upper grip piece 32UG. The first lower grip piece 32LG, And is gripped in a state in which the suture thread 2 is interposed between the surfaces provided on the distal end side of the first upper grip piece 32UG and abutting each other. In addition, a suture guide groove is provided at a side position of the surface where the first lower grip piece 32LG and the first upper grip piece 32UG are abutted with each other, and the suture thread guide groove is provided with a groove- (32IG). Specifically, the first lower suture guide guide piece 32LP and the first upper suture guide guide piece 32UP are provided on one side of the first lower grip piece 32LG and one side of the first upper grip piece 32UG, The first suture guide guide piece 32LP and the first upper suture guide guide piece 32UP are provided with suture placement grooves 32IG. The end of the first upper suture guide piece 32LP and the end of the first upper suture thread guide piece 32UP are engaged with the first lower contact piece 32LG and the first upper grip piece 32UG, And the first upper contact surface. That is, the end of the first upper suture thread guide piece 32LP extends further in the direction of the first upper grip piece 32UG and further projects beyond the first lower contact surface, and the end of the first upper suture thread guide piece 32UP 1 lower grip piece 32LG and protrudes further downward than the first upper contact surface. The first upper suture guide guide piece 32LP and the first upper suture guide guide piece 32UP are provided with a suture guide groove in the form of a V-shaped groove when viewed from the side of the pair of first grip pieces 32G, At the inner end of each of the suture guide grooves, which is connected to the respective guide surfaces, a suture anchor groove 32IG is provided. The suture anchor grooves 32IG are in the form of a linear groove extending vertically. The suture anchor grooves 32IG of the first upper suture guide guide 32UP and the suture placement grooves 32IG of the first lower suture guide guide piece 32LP are arranged on the same line along the transfer line of the suture thread 2, And has a structure in which the first lower contact surface and the first upper contact surface are provided between the respective two suture placement grooves 32IG. Further, the first upper suture guide guide piece 32LP and the first upper suture guide guide piece 32UP are disposed at positions displaced from each other with reference to the longitudinal direction centerline of the first grip piece 32G. Specifically, a surface facing the second gripper 34 is referred to as a first left surface, and a surface opposite to the second gripper 34, as opposed to the front and rear center lines of the first gripper 32, A first right suture thread guide piece 32LP is provided on a first right side surface of the first lower grip piece 32LG and a first right suture thread guide piece 32LP is provided on the first right side surface of the first upper grip piece 32UG And a first upper suture guide member 32UP is provided on the first left side. When the first upper grip piece 32UG is lifted up, the first upper suture guide piece 32UP is also heard.
The suture thread guide grooves are provided at both side positions of the contact surfaces where the upper and lower pairs of first grip pieces 32G of the first gripper 32 are in contact with each other. And the suture thread 2 is inserted into the suture anchor groove 32IG of the first grip piece 32G so that the pair of first grip pieces 32G are in contact with each other, 2) can be gripped. The first gripping cylinder 31 serves as a moving means for causing a pair of first gripping parts 32G of the first gripper 32 to flare and retract to the original position.
The pair of first grip pieces 32G constituting the first gripper 32 is provided with a jaw 33J meshed with the abutting surfaces thereof so that the suture 2 is inserted between the jaws 33J And held in a gripped state. In the present invention, the jaws 33J are formed on the contact surfaces of the pair of first grip pieces 32G. The jaws 33J formed on the first lower contact surface and the jaws 33J formed on the first upper contact surface The suture yarn 2 may be gripped in a state in which a plurality of bent portions are formed rather than being linearly gripped.
On the other upper surface of the moving panel 31MP, a rail extending in the front-rear direction of the main body 10 is provided, and a second gripper support frame 34SP is slidably coupled to the rail. The second gripper support frame 34SP is a dielec- tric channel structure in which the two side plates on the left and right sides are arranged to face upward. The second gripper support frame 34SP is attached to a rail provided on the moving panel 31MP, Possibly combined. The cylinder rod of the cylinder is connected to the second gripper support frame 34SP. The cylinder in which the cylinder rod is connected to the second gripper support frame 34SP has a structure in which the moving panel 31MP is mounted via fixing means such as bracket and bolt.
The second gripper support frame 34SP is provided with a second grip cylinder 35. The second gripper cylinder 35 is provided with the second gripper 34 so that the pair of second grip pieces 34G of the second gripper 34 Are narrowed to the original position in a state where they are flared or flared. At this time, also in the case of the second gripper 34, the second grip piece 34G of one of the pair of second grip pieces 34G is moved in the direction of the cylinder rod of the second grip cylinder 35, And a movable grip piece that fires in the grip piece 34G and returns to the original position, and the other second grip piece 34G can be configured as a fixed grip piece. As in the case of the first gripper 32, when the cylinder rod of the second grip cylinder 35 advances, the pair of second grip pieces 34G are spread apart and the pair of second grip pieces 34G come into contact with each other And when the cylinder rod of the second grip cylinder 35 is retracted in the original position, the pair of second grip pieces 34G are narrowed to their original positions, and the pair of second grip pieces 34G come into contact with each other Can be configured to grip the suture thread (2).
The second gripper 34 may also be referred to as a second lower grip piece 34LG and a second upper grip piece 34UG located on the lower side of the pair of second grip pieces 34G, (34LG) and the second upper grip piece (34UG), and are gripped with the suture thread (2) interposed therebetween. In addition, a suture guide groove is provided at a side position of the abutting surface of the second lower grip piece 34LG and the second upper grip piece 34UG, and the suture guide groove is formed in the suture guide groove, (34IG). Specifically, the second lower suture thread guide piece 34LP and the second upper suture thread guide piece 34UP are provided on one side of the second lower grip piece 34LG and one side of the second upper grip piece 34UG, respectively. The suture anchor grooves 3234IG are provided in the second lower suture guide guide 34LP and the second upper suture guide guide 34UP. The end of the second lower suture guide piece 34LP and the end of the second upper suture guide piece 34UP are connected to the second lower contact surface 34GL of the second lower grip piece 34LG and the second upper grip piece 34UG, And the second upper contact surface. In other words, the end of the second lower suture guide member 34LP extends further in the direction of the second upper grip piece 34GU than the second lower contact surface, and the end of the second upper suture guide member 34UP 2 lower grip piece 34LG and protrudes further downward than the second upper contact surface. The second lower suture guide guide piece 34LP and the second upper suture guide guide piece 34UP are provided with a suture guide groove in the form of a V-shaped groove when viewed from the side of the pair of first grip pieces 32G, A suture anchor groove 34IG is provided at an inner end of each of the suture guide grooves which is connected to each of the guide surfaces. The suture anchor grooves 34IG are in the form of straight grooves extending vertically. The suture anchor grooves 34IG of the second upper suture guide guide 34UP and the suture location grooves 34IG of the second lower suture guide piece 34LP are arranged on the same line along the transfer line of the suture 2, And has a structure in which the second lower contact surface and the second upper contact surface are provided between the respective two suture placement grooves 34IG. The second lower suture guide guide piece 34LP and the second upper suture guide guide piece 34UP are disposed at positions shifted from each other with reference to the longitudinal direction centerline of the second grip piece 34G. Specifically, a surface facing the first gripper 32 is referred to as a second right side of the two side surfaces provided on both sides of the front and rear center lines of the second gripper 34, A second lower suture guide guide piece 34LP is provided on the second left side surface of the second lower grip piece 34LG and the second upper grip piece 34UG is provided on the second left side surface of the second lower grip piece 34LG, A second upper suture thread guide piece 34UP is provided on the second right side surface of the second upper suture thread guide piece 34UP. When the second upper grip piece 34UG is lifted up, the second upper suture guide piece 34UP is also heard.
In addition, suture guide grooves are provided at both side positions of the contact surfaces that are in contact with the upper and lower pairs of second grip pieces 34G of the second gripper 34. In the suture thread guide grooves, And the pair of second grip pieces 34G are brought into contact with the contact surfaces of the pair of second grip pieces 34G in a state in which the suture thread 2 is inserted into the suture location grooves 34IG of the second grip piece 34G, 2) can be gripped. The second gripping cylinder 35 serves as a moving means for causing a pair of second gripping portions 34G of the second gripper 34 to flare and retract to the original position.
A pair of second grip pieces 34G constituting the second gripper 34 are also provided with a jaw 33J which engages with the abutting surfaces of the pair of second grip pieces 34G so that the suture 2 is inserted between the jaws 33J And held in a gripped state. In the present invention, the jaws 33J are formed on the contact surfaces of the pair of second grip pieces 34G. The jaws 33J formed on the second lower contact surface and the jaws 33J formed on the second upper contact surface The suture yarn 2 can be gripped in a state in which a plurality of bent portions are formed rather than being linearly gripped.
At this time, the second gripper 34 itself is disposed at a distance from the suture 2 rather than the first gripper 32. A first gripper 32 is disposed on the conveying path of the suture thread 2 and a second gripper 34 is disposed on a position away from the conveying path of the suture 2 when viewed from the upper surface of the main body 10 have.
The second gripper 34, which is out of the path through which the suture 2 is fed, moves to a position where the suture 2 can be gripped by the cylinder mounted on the second gripper support frame 34SP. The second gripper 34 can be moved forward and backward in a direction orthogonal to the conveying path along which the suture 2 is moved, so that the suture 2 can be held. As described above, the cylinder rod of the cylinder is connected to the second gripper support frame 34SP, and the cylinder to which the cylinder rod is connected to the second gripper support frame 34SP is connected to the moving panel 31MP by a bracket, And the second grip cylinder 35 equipped with the second gripper 34 on the cylinder rod is mounted on the second gripper support frame 34SP so that the cylinder rod of the cylinder The second gripper support frame 34SP advances along the rail provided in the forward and backward directions to the main body 10 and the second gripper 34 mounted on the second gripper support frame 34SP is advanced to the suture 2, So that the suture thread 2 can be gripped by the respective second grip pieces 34G. The second gripper support frame 34SP and the second gripper 34 are returned to their original positions and the suture thread 2 is gripped by the second gripper support frame 34SP when the cylinder rod of the cylinder is retracted. As shown in FIG. That is, when the first gripper 32 and the second gripper 34 move to the feeding part 20 where the suture yarn 2 is fed, a pair of second grip pieces 34G of the second gripper 34 are fed to the feeding part 20, In a state in which the first grip piece 32G of the first gripper grips the suture thread 2 and pulls the suture thread 2 at a predetermined length in the feeding part 20, And a grip pushing means for advancing a pair of second grip pieces 34G of the gripper 34 to the gripable region of the suture 2. A cylinder to which the cylinder rod is connected to the second gripper support frame 34SP constitutes the grip pushing means.
The second gripper support frame 34SP is further provided with a cross cylinder 37 having a cylinder rod connected to the second grip cylinder 35. The second gripper 34 connected to the cylinder rod of the second grip cylinder 35 is disposed in a direction orthogonal to the conveying path of the suture 2. The cylinder rod of the cross cylinder 37 is connected to the second gripper 34. [ (34) and arranged in a direction parallel to the conveying path of the suture thread (2). In this case, the second gripper support frame 34SP, which is a channel-type block structure, is provided with a guide rail 12 parallel to the conveying path of the suture 2. The second grip cylinder 35 includes a conveying direction moving frame 34DP of the cross cylinder 37. The transport direction moving frame 34DP is mounted on the guide rail GR inside the second gripper support frame 34SP so as to be slidable relative to the guide rail GR, Is connected to one side of the second grip cylinder 35 through the second gripper support frame 34SP. A spring S is interposed between the other side of the second grip cylinder 35 and the side wall of the second gripper support frame 34SP. Therefore, when the cylinder rod of the cross cylinder 37 is advanced, the second grip cylinder 35 is pushed together with the transfer direction moving frame 34DP to compress the spring S, The second gripping cylinder 35 is retracted and the spring S is in the decompressed state. The second grip cylinder 35 and the feed direction moving frame 34DP are advanced together when the cylinder rod is advanced by supplying hydraulic pressure to the inside of the cross cylinder 37 so that the side wall of the second gripper support frame 34SP and the feed direction When the spring S interposed between the movable frame 34DP is compressed and the hydraulic pressure is discharged from the inside of the cross cylinder 37, the pressing force of the spring S is released, so that the elastic restoring force of the spring S The second gripping cylinder 35 and the transporting direction moving frame 34DP are moved back together. That is, the cross cylinder 37 enables the second grip cylinder 35 and the second gripper 34 to be operated back and forth within a range of a distance along the conveying path of the suture thread 2.
The gripper assembly 30 including the first gripper 32 and the second gripper 34 and the first grip cylinder 31 and the second grip cylinder 35 is moved by the transfer operation portion 40 to the main body 10). The gripper assembly 30 includes a first gripper 32 for gripping the suture thread 2 coming out of the feeding end of the feeding block 26 and moving by the feeding operation part 40 to pull the suture thread 2, A second gripper 32 for moving together with the first gripper 32 when the first gripper 32 grips and pulls the suture thread 2 and then grips the suture 2 on the opposite side of the first gripper 32, (34). In the present invention, the gripper assembly 30 is mounted on the first gripper 32, the second gripper 34, the first grip cylinder 31, the second grip cylinder 35, and the second gripper support frame 34SP A cross cylinder 37 and a cylinder mounted on a moving panel 31MP provided in the main body 10 and a cylinder rod connected to a second gripper support frame 34SP, And is reciprocally transported along a direction parallel to the feeding path of the suture yarn 2 by the suture portion 40.
The transfer operation part 40 described in the present invention is configured such that the gripper assembly 30 including the first gripper 32 and the second gripper 34 is inserted into the ball screw provided on the motor shaft of the motor, As shown in Fig. A ball screw is disposed on the motor shaft of the motor provided in the main body 10 in a direction parallel to the conveying line of the suture thread 2 and the moving panel 31 MP having the first gripper 32 and the second gripper 34 mounted thereon And a ball screw nut which is screwed to the ball screw in the second gripper 32. When the ball screw is rotated by the rotation of the motor shaft of the motor, the moving panel 31MP, the first gripper 32 and the second gripper 32, (34) reciprocates along the feeding path of the suture thread (2). One end of the caterpillar strap 42 is connected to the main body 10 through a plurality of caterpillar hinges and the other end of the caterpillar strap 42 is connected to the moving panel 31MP. At this time, the feed operation unit 40 can be any means that can move the gripper assembly 30 along the feeding path of the suture thread 2, in addition to the ball screw and the ball screw nut provided on the motor shaft of the motor.
The present invention is characterized in that the first gripper 32 pulls a certain length in a state where the first gripper 2 grips the suture thread 2 and cuts the suture thread 2 while the second gripper 34 grips the suture thread 2 And a separation knife 38.
The separation knife 38 is provided on the main body 10 so as to be adjacent to the feeding end of the feeding block 26 constituting the feeding part 20. The separation knife 38 is configured to enter the transport path of the suture 2 by operating means to cut the suture 2. [ To this end, the present invention includes a separation operation cylinder 38CY.
The separation operation cylinder 38CY is provided on the main body 10 via a frame or other fixing means such that the cylinder rod of the separation operation cylinder 38CY is advanced and retracted in the vertical direction. A separation knife 38 is mounted on the cylinder rod of this separation operating cylinder 38CY. It is possible to adopt a structure in which a plate-shaped knife supporter is provided on the cylinder rod of the separation operating cylinder 38CY and a separation knife 38 is detachably attached to the knife supporter by fastening means such as a bolt. Therefore, when the cylinder rod of the separation cylinder advances, the knife support and separation knife 38 come into the feed path (cutable path of the suture thread 2) of the suture thread 2, 2 gripper 34 grips the suture yarn 2 to a predetermined length and separating knife 38 cuts the suture thread 2 to a predetermined length and then separates the two first grippers 32 and the second grippers 32, (34) moves toward the processing knife (58) for forming the barbs (2a) while holding the suture thread (2).
The cutting knife 58 is moved by the feed actuating part 40 along with the gripper assembly 30 (i.e., the first gripper 32 and the second gripper 34) Are automatically cut so that a plurality of barbs 2a are formed on the surface of the suture 2 at regular intervals.
The knife 58 constitutes a knife assembly 50 provided on one side of the main body 10 in the feeding path of the suture thread 2. That is, the knife assembly 50 includes a repeat moving part 52 which is repeatedly operated forward and backward in a direction intersecting with the moving direction of the suture thread 2, And a processing knife 58 for repeatedly cutting back the sewing thread 2 so that a plurality of barbs 2a are formed on the surface of the suture 2 at regular intervals.
The repeat moving part 52 includes a repeating moving device 56 for causing the knife moving frame 54 to move back and forth at one side of the conveying path of the suture 2.
The main body 10 has a rail at one side of the feeding path of the suture thread 2. This rail is arranged in a direction orthogonal to the conveying path of the suture 2. A connecting frame (substantially a hexahedron shape) is slidably coupled to the rails arranged in the main body 10 so as to be orthogonal to the conveying path of the suture thread 2, and a knife moving frame 54 is fixed to the connecting frame by a bracket, As shown in FIG. The knife moving frame 54 will also be moved back and forth in a direction perpendicular to the feeding path of the suture 2 when the connecting frame moves back and forth in the direction orthogonal to the feeding path of the suture 2 along the rails.
The repeat moving device 56 includes a cam 56A connected to a knife moving frame 54 disposed on the main body 10 and a driving motor 56B connected to the cam shaft 56A.
The driving motor 56B is fixed to the main body 10 such that the motor shaft is arranged in a direction parallel to the conveying direction of the suture yarn 2. [ The drive motor 56B is fixed on the main body 10 so as to be disposed at a position behind the knife moving frame 54. [ On the other hand, the motor shaft of the drive motor 56B is disposed in a direction orthogonal to the forward and backward directions of the knife moving frame 54. [
The center of the cam 56A is connected to the motor shaft of the drive motor 56B. A camshaft 56AS is provided at a position eccentric from the central portion on one side of the cam 56A and a cam link 56A is provided between the camshaft 56AS and the knife moving frame 54. [ 56AL) are connected. The front end of the cam link 56AL is connected to the rear end of the knife moving frame 54 via a joint and the rear end of the cam link 56AL is connected to the eccentric cam shaft 56AS of the cam 56A via a joint have. Therefore, when the cam 56A is rotated by the rotation of the motor shaft of the drive motor 56B, the camshaft 56AS rotates in the circumferential direction at an eccentric position with respect to the center of the cam 56A, The connected cam links 56AL reciprocate in the vertical direction and the back and forth direction by joints at the front and rear ends so that the motor shaft rotational force of the drive motor 56B changes linear motion to the knife moving frame 54 via the cam link 56AL And the knife moving frame 54 is slidably engaged with the rail provided on the main body 10 so that the knife moving frame 54 is moved forward and backward in the direction orthogonal to the feeding path of the suture 2 . The drive motor 56B is provided in the main body 10 so that a motor shaft is connected to the cam 56A and rotates the cam 56A in accordance with the rotation of the motor shaft so that the knife moving frame 54 is moved Direction along the rail arranged in a direction perpendicular to the direction of the slide.
The manipulation knife 58 is rotated in the transverse direction at a predetermined angle with respect to the intersecting line orthogonal to the moving direction of the suture thread 2 so that the barbs 58a, Is formed so as to be inclined at a predetermined angle with respect to the longitudinal direction of the suture thread (2). In the present invention, the rotation unit 60 is rotatably mounted on a knife moving frame 54 which is moved forward and backward in a direction orthogonal to the conveying direction of the suture 2, and the center thereof is connected to the motor shaft of the rotation driving motor 66 And a rotation limiter for setting (restricting) the rotation angles of the rotation block 62 and the processing knife 58. The rotation block 62 includes a rotation limiter, In the present invention, the rotation limiter is composed of an encoder 64.
The rotation drive motor 66 is mounted on the knife moving frame 54. A rotation driving motor 66 is mounted at the rear end of the knife moving frame 54. The motor shaft of the rotation drive motor 66 is arranged in a direction orthogonal to the transfer line of the suture 2. [ A rotation block 62, which is another component of the rotation unit 60, is provided on the motor shaft of the rotation drive motor 66. The rotation block 62 has a circular block shape. The center of the rotation block 62 is coaxially connected to the motor shaft of the rotation drive motor 66. That is, the rotation block 62 is rotatably mounted on the knife moving frame 54 which is moved forward and backward in the direction orthogonal to the conveying direction of the suture 2, and the center thereof is connected to the motor shaft of the rotation driving motor 66 .
A machining knife 58 is mounted on the front surface of the rotation block 62. The reference pin 63 is provided at the periphery of the rotation block 62 and the reference pin 63 is located at the center of the rotation block 62 when the rotation block 62 is at the reference position And the processing knife 58 is mounted on the center of the rotation block 62 so as to be aligned with the reference pin 63 in the vertical direction as a plate-like plate-like knife structure. The knife support piece 57 is fixed to the knife support piece 57 by a fastener such as a bolt in a state where the processing knife 58 is fitted into the knife coupling groove of the knife support piece 57 provided on the front surface of the rotation block 62 . At the lower end of the processed knife 58, a sharp blade is provided. Therefore, when the rotation block 62 does not rotate and is at the reference position (zero point position), the processing knife 58 is set in the vertical direction.
The rotation block 62 is provided at its periphery with an encoding panel 64a constituting an encoder 64 to be described later. The rotation angle of the rotation block 62 is set (limited) in a state where the rotation block 62 is rotated to the left or right by a predetermined angle with respect to the central vertical direction extending vertically from the central portion when viewed from the front of the rotation block 62 ) Is the function of the encoder 64. [
The encoder 64 includes an encoding panel 64a provided in the rotation block 62 and an encoder 64a provided in the rotation block 62a when the encoding panel 64a is rotated at a predetermined angle in one direction in a direction perpendicular to the conveying direction of the suture 2, A first light emitting element 64b and a first light receiving part (sensor) which operate to set the rotation angle of the knife 58 and a second light receiving element 64b which is arranged on the other side in the direction perpendicular to the conveying direction of the suture thread 2 And a second light emitting element 64c and a second light receiving portion (sensor) that operate to set the rotation angle of the processing knife 58 when the substrate is rotated at a predetermined angle in the direction of the rotation of the processing knife 58. [ In the present invention, the reference light emitting element (sensor) is arranged in the vertical direction extending from the central portion to the upper portion when viewed from the front of the rotation block 62, and the first light emitting element 64b and the first light receiving portion are constant And the second light emitting element 64c and the second light receiving portion are disposed at the lower right position which is opened at a predetermined angle from the reference light emitting element. That is, the reference light emitting element and the first light emitting element 64b, the first light receiving element, the second light emitting element 64c, and the second light receiving element are radiated from the center of the rotation block 62 when viewed from the front face of the rotation block 62, As shown in FIG. The reference light emitting element is disposed at a position extending vertically upward from the center of the rotation block 62. The first light emitting element 64b and the first light receiving portion are disposed at a position spaced apart from the reference light emitting element by about 150 degrees to the left, The second light emitting element 64c and the second light receiving portion are disposed at a position spaced by about 150 degrees to the right of the reference light emitting element. The first light emitting device 64b is disposed at a position inclined 60 degrees to the left with respect to the vertical vertical line VL extending from the central portion of the rotation block 62 and the second light emitting device 64c is disposed at a position So that the rotation of the rotation block 62 causes the processing knife 58 to rotate in the direction tilted 60 DEG to the left with respect to the vertical line VL, The light of the first light emitting device 64b is cut off by the encoding panel 64a so that the processed knife 58 is maintained to be rotated to the left by 60 degrees with respect to the vertical line VL The light of the second light emitting element 64b is blocked by the encoding panel 64a when the processing knife 58 rotates in the direction tilted 60 DEG to the right with respect to the vertical line VL, 58 < / RTI > relative to the vertical line VL Side will maintain a rotation state at an angle of 60 °.
The encoding panel 64a is provided on the upper half of the entire circumference of the rotation block 62 of the circular block type. The encoding panel 64a has a substantially semicircular plate structure, and a reference slot is formed at a middle position between both ends of the encoding panel 64a. When the reference slot is aligned with the reference light emitting device, 64a on the upper side of the rotation block 62. As shown in Fig. That is, when the reference slot of the encoding panel 64a is aligned with the reference light emitting element and the reference light receiving portion, the position becomes the reference point (zero point).
When the rotation block 62 and the encoding panel 64a are rotated to the left by a predetermined angle when viewed from the front of the rotation block 62 of the encoding panel 64a, The rotation block 64a blocks the light from being projected to the first light receiving unit, and the rotation of the rotation block 62 and the encoding panel 64a is stopped. The reference pin 63 of the rotation block 62 is rotated to the left by a predetermined angle and the processing knife 58 mounted on the front surface of the rotation block 62 is also stopped in a state of rotating leftward in the vertical direction by a predetermined angle, The rotation angle of the knife 58 is approximately 60 DEG with respect to the vertical direction. That is, the knife 58 is stopped in a state of being rotated to be inclined to the left by 60 degrees with respect to the vertical direction orthogonal to the horizontal direction, which is the feeding path of the suture thread 2. When the rotation block 62 and the encoding panel 64a rotate at right angles to the right as viewed from the front of the rotation block 62 of the encoding panel 64a, The rotation of the rotation block 62 and the encoding panel 64a is interrupted. As a result, the rotation of the rotation block 62 and the encoding panel 64a is stopped. FIG. 10 shows a state in which the light of the first light emitting element 64b on the left side is blocked by the encoding panel 64a. Therefore, as described above, the reference pin 63 of the rotation block 62 rotates to the right by a predetermined angle, and the processing knife 58 mounted on the front surface of the rotation block 62 also rotates to the right from the vertical direction by a predetermined angle The rotation angle of the processing knife 58 is approximately 60 DEG with respect to the vertical direction. That is, the knife 58 is rotated in a state of being rotated rightward by 60 degrees with respect to the vertical direction orthogonal to the horizontal direction, which is the conveying path of the suture thread 2.
The processing knife 58 is reciprocated forward and backward within the range of the feeding path of the suture thread 2 in a state where the processing knife 58 rotates at a predetermined angle (60 ° in the present invention) on both sides in the vertical direction (zero point position) A plurality of barbs 2a are formed on the surface of the suture 2 at regular intervals by a sheath formed to be inclined at a predetermined angle with respect to the suture 2. That is, the cutting line formed by cutting the upper tangential suture 2, in which the working knife 58 is tilted at a predetermined angle sideways (left or right) in the vertical direction, is inclined at a certain angle with respect to the longitudinal direction of the suture 2 . In the present invention, since the knife 58 is cut in a state in which the knife 58 is tilted 60 ° from the vertical position (zero position, reference position), a plurality of barbs 2a cut at an angle of 60 ° are formed at regular intervals .
The suture yarn 2 comes into the inside when the barb 2a is formed on the suture 2 by the working knife 58 and the working knife 58 is rotated in a state of inclining toward one side or the other side with respect to the vertical direction And a suture base supporter 70 for supporting the suture thread 2 stably at the lower position and the forward and backward positions while supporting the suture thread. A base cylinder 74 is provided on the upper surface of the main body 10 at a position where the processing knife 58 moves back and forth and a suture base supporter 70 is mounted on the cylinder rod of the base cylinder 74, So that the syringe base supporter 70 is also raised and lowered when the cylinder rod of the syringe base 74 is lifted or lowered.
At this time, the suture base supporter 70 has a substantially rectangular plate structure, and the suture base supporter 70 is provided therein with a suture seating groove 72g communicated with the upper end and both sides. The suture seating groove 72g is aligned with the line through which the suture thread 2 passes. The suture base supporter 70 is disposed under the suture thread 2 as the cylinder rod of the base cylinder 74 is normally shrunk when the suture base supporter 70 is disposed under the suture thread 2 When the suture seating groove 72g is positioned at the bottom of the suture 2 and the suture base supporter 70 is lifted in accordance with the advancement of the cylinder rod of the base cylinder 74, ).
As described above, when the suture 2 is passed by the gripper assembly 30 and the barb 2a is formed by the cutting knife 58, the suture 2 is inserted into the suture mount base 70, The suture receiving groove 72g is provided with a space for allowing the processing knife 58 to be moved back and forth in the region of the suture receiving groove 72g in a state where the processing knife 58 is tilted to one side or the other side at a predetermined angle from the vertical direction A groove portion 72 is provided. The space trench 72 is provided with inclined surfaces on both sides with respect to the vertical direction, and the pair of inclined surfaces has a V-groove shape in which the distance therebetween gradually increases from the bottom to the top. When viewed from the front side of the suture base supporter 70, the left side inclined surface is inclined at an angle of 60 degrees with respect to the vertical direction, and the right side inclined surface is inclined at an angle of 60 degrees with respect to the vertical direction. Of course, it is a matter of course that both inclined surface angles of the space trench 72 can be increased or decreased depending on the case.
In the present invention, a suture collecting cylinder 16 is provided at the discharge end of the transfer line of the main body 10, and a drop push bar 18 which is vertically rotated about the hinge unit is provided on the upper side of the suture collecting cylinder 16 Respectively. The drop push bar 18 may be connected to the main body 10 at its base end with reference to the center of rotation or to the suture collecting barrel 16. At this time, the rotation center portion may be a hinge portion. The drop push bar 18 is connected to the main body 10 or the suture collecting cylinder 16 at the base thereof with reference to the center of rotation and at least two or more along the feed direction of the suture 2 . Further, a rotation operation device is connected to the rotation center portion of the drop push bar 18. In the present invention, the drop push bar 18 is connected to the main body 10 or the suture collecting cylinder 16 via a hinge shaft so as to function as a pivot center portion, and the motor shaft of the motor is coaxially connected to the hinge shaft It is possible to connect the motor shaft to the power transmission device so as to transmit the rotational force of the motor shaft. More preferably, a plurality of drop push bars 18 arranged at least two or more in parallel along the conveying direction of the suture 2 are hinged to the main body 10 or the suture collecting cylinder 16 so as to function as a pivot center, So that the motor shaft of the motor is connected to the hinge shaft connecting the two or more drop push bars 18. In this case, when the motor shaft of the motor rotates in one direction, the drop push bar 18 is pivoted downward and the drop push bar 18 is pivoted upward to the original position when the motor shaft of the motor is reversely rotated back to its original position. The motor connected to the turn center portion (hinge portion) of the drop push bar 18 of the motor shaft forms a turn operation device. The vertical turn operation device of the drop push bar 18 may be other means such as a cylinder in addition to the motor It is possible.
A plurality of barbs 2a are formed on the suture 2 by the knife 58 and then the suture 2 is inserted into the area of the suture collecting cylinder 16, The drop push bar 18 pivots about the pivot center portion (hinge portion) of the base end and pushes the suture thread 2 downward so that the suture thread 2 Can be dropped and collected in the suture collecting cylinder 16.
A process of gripping a suture for machining a barb and moving the barb to a barb knife according to the present invention will be described as follows.
1. A suture thread 2 released from a feeding bobbin 22 provided at a feeding end of a suture thread 2 of a main body 10 is wound around a guide roller 24 and a weight roller 28b provided in the weight 28 A part of the suture 2 comes out from the feeding end of the suture 2 of the feeding block 26 and is arranged horizontally. On the other hand, a pair of the first grip piece 32G of the first gripper 32 and the pair of second grip pieces 34G of the second gripper 34 on the side of the processing knife 58 are in the open state The first gripper 32 and the second gripper 34 move together to the feeding block 26 side. At this time, the second gripper 34 is less protruded toward the rear end of the main body 10 than the first gripper 32, so that the second gripper 34 is positioned on the supply part 20 of the main body 10, (The feeding bobbin 22, the guide roller 24, the weight 28 supported on the support frame, and the feeding block 26 portion where the end of the suture 2 comes out to the front face for a predetermined length) The first grip piece 32G of the first gripper 32 can grip the suture thread 2 horizontally projecting to the feeding end of the feeding block 26 do. Then, a pair of first grip pieces 32G of the first gripper 32 are narrowed to abut on each other, so that the first gripper 32 grips the suture 2. At this time, the first gripper 32 and the second gripper 34 move in the direction of the feeding block 26 of the main body 10 so that the first gripper 32 can grip the suture thread 2 The position sensor senses this and stops the driving of the transfer operation part 40. [ The position sensor is connected to a control unit for controlling driving of each main part of the suture production apparatus of the present invention. When the first gripper 32 enters the position where the first gripper 32 can grip the suture thread 2, And the control part transmits the first gripper 32 and the second gripper 34 to the feeding operation part 40 for moving the suture thread 2 in the direction of the feeding block 26, Drive motors 66, 56B, and the like). After the first gripper 32 enters the position where the suture 2 can be gripped, the pair of first gripping parts 32G of the first gripper 32 are narrowed and the suture 2 ).
2. In the state where the first gripper 32 grips the suture 2, the second gripper 34 together with the first gripper 32 is moved in the direction of the knife 58 by the feeding operation portion 40 The suture thread 2 is moved to a predetermined length. The first gripper 32 and the second gripper 34 are coupled to the moving panel 31MP slidably coupled to the longitudinal guide rail 12 of the main body 10, The first gripper 32 and the second gripper 34 move in the direction of the processing knife 58 in a state in which the first gripper 32 and the second gripper 34 are kept at a constant distance and stop (primary movement and stop) do. When the first gripper 32 moves in a state in which the suture thread 2 is drawn in the direction of the knife 58 in a certain length, the respective second grip pieces 34G of the second gripper 34 are still opened, ) In the standby state.
3. When the first gripper 32 and the second gripper 34 are in the primary movement and stop positions, the second gripper 34 is disposed at a position where it can enter the conveying path of the suture 2 Since the cylinder rod of the cylinder is connected to the second gripper support frame 34SP on which the second gripper 34 is mounted, when the cylinder rod of the cylinder advances, the second gripper support frame 34SP and the second gripper support frame 34SP, The pair of second grip pieces 34G of the second gripper 34 come into contact with the suture thread 2 in the direction perpendicular to the conveying path of the suture 2, 2) in the upper and lower positions. Next, the pair of second grip pieces 34G are narrowed to a state in which the pair of second grip pieces 34G are opened, and the suture yarn 2 is gripped. The second grip piece 34G grips the suture thread 2 in a state where the first grip piece 32G first grips a part of one end of the suture thread 2 and pulls the suture thread 2, And the second gripper 34 grip the suture yarn 2 with a predetermined length.
4. After the second gripper 34 grips the suture thread 2, the first gripper 32 and the second gripper 34 move the suture thread 2 in a gripped state with a certain length, The knife 38 cuts the suture 2. The separation knife 38 is disposed between the feeding end of the feeding block 26 and the second gripper 34 such that the separating knife 38 can be moved forward and backward (connected to the cylinder rod of the separating operation cylinder 38CY) 26, the separating knife 38 advances into the conveying path region of the suture thread 2 and enters the suture thread 2 to cut the suture 2. The sharp blade of the separation knife 38 cuts the suture 2.
5. When the separation knife 38 cuts the suture 2 between the second gripper 34 and the feeding block 26, the suture 2 is separated to a predetermined length and the two first grippers 32 The first gripper 32 and the second gripper 34 grip the suture yarn 2 having a predetermined length in the state where the second gripper 34 grips the suture thread 2 having the predetermined length And moves to the area of the knife 58 to be processed. The first gripper 32 and the second gripper 34 are moved to the machining knife 58 area (machining area of the barb 2a) by the driving of the transfer operating part 40 and then stopped. At this time, the cross cylinder 37 is operated so that the suture thread 2 is pulled up tightly before the barb 2a is formed on the suture thread 2 by the processing knife 58. That is, the cylinder rod of the cross cylinder 37 is connected to the second grip cylinder 35 which performs an operation of closely contacting and disengaging the pair of second grip pieces 34G of the second gripper 34, The second gripper 34 is disposed at a position narrowed by a certain distance in the direction of the first gripper 32 (i.e., the second gripper 34 is positioned at the first gripper 32) in a state in which the cylinder rod of the cross cylinder 37 is advanced. When the cylinder rod of the cross cylinder 37 is retracted backward, the second grip cylinder 35 connected to the cross cylinder 37 and the second grip cylinder 35 connected to the cross cylinder 37 The second gripper 34 mounted thereon is further widened in the first gripper 32, so that the suture 2 is pulled tight. That is, the conveying direction moving frame 34DP provided so as to be movable forward and backward in the direction parallel to the conveying direction of the suture 2, and the second grip cylinder 35 and the second gripper 34 mounted thereon are supported by the first gripper The suture yarn 2 gripped at both ends thereof by the first gripper 32 and the second gripper 34 is pulled tightly.
6. After the first gripper 32 and the second gripper 34 grip the suture 2 in a pulled-up state, the suture base supporter 70 is lifted up from the bottom to the inside of the suture base supporter 70 The suture thread 2 enters the suture receiving groove 72g of the suture receiving groove 72g. At the same time, a part of the suture thread 2 is contained in the region of the V groove-like space groove 72 provided in the suture seating groove 72g. Of course, the processing knife 58 is arranged at a position corresponding to the area of the space groove 72 of the suture base supporter 70, so that the processing knife 58 can be moved forward and backward.
7. The first gripper 32 and the second gripper 34 are stopped in the machining area of the barb 2a of the knife 58 so that a part of the suture 2 is inserted into the space groove portion The rotation block 62 in which the processing knife 58 is mounted on the front face and the knife moving frame 54 which supports the rotation block 62 in a state where the knife moving frame 72 And the knife moving frame 54 and the rotation block 62 move back and forth so that the knife 58 is repeatedly moved forward and backward so that the surface of the suture 2 A plurality of barbs 2a are formed on the suture thread 2 at regular intervals. The sharp blade of the knife 58 cuts the suture 2 to a predetermined depth on the outer surface and slices the suture 2 to form a plurality of barbs 2a at regular intervals in the suture 2. [ At this time, the space groove portion 72 of the suture base supporter 70 is formed such that both inclined surfaces are inclined by 60 ° with respect to a vertical line in the middle, and the machining knife 58 is formed with respect to the front surface of the rotation block 62 The angle between the sheath line formed by cutting the suture thread 2 by the working knife 58 and the vertical direction is set to be smaller than 60 degrees 60 °. That is, the angle of the sheath formed on the suture thread 2 is 60 degrees with respect to the vertical direction orthogonal to the horizontal direction of the suture thread 2, A plurality of barbs 2a are formed at regular intervals in the suture thread 2 by a plurality of sheath lines (cutting lines) Of course, it should be understood that the angle of the sheath may vary as the angle of the working knife 58 is varied with respect to the vertical direction. On the other hand, since the barbs 2a are processed on the suture thread 2 in a state where the suture thread 2 is stably received in the suture seating grooves 72g of the suture base supporter 70, And so on.
8. Processed knife 58 The barb 2a is processed by a plurality of barbs 2a by means of a processing knife 58 as the suture 2, the first gripper 32 and the second gripper 34 slowly pass. Is formed on the suture thread (2), the suture thread (2) on which the barbs (2a) are formed is dropped into the suture collecting cylinder (16) and collected. The first gripper 32 and the second gripper 34 and the suture thread 2 together with the suture thread collecting cylinder 16 after the finished knife 58 completes the barb 2a on the suture thread 2, Move up. After the first gripper 32 and the second gripper 34 are moved over the suture collecting cylinder 16 by bending the suture 2, the first gripper 32 and the second gripper 34, respectively, The grip piece 32G and the second grip piece 34G are opened to release the grip state of the suture thread 2. [ At this time, a drop push bar 18 is provided at a position of the suture collecting cylinder 16 so as to be disposed at an upper position of the suture 2. The first gripper 32 and the second gripper 34 are connected to the suture 2, The drop push bar 18 is rotated and lowered with respect to the rotation center portion (hinge portion) of the proximal end so that the drop push bar 18 slides the suture thread 2 under the suture collecting bottle 16 To be collected.
The first gripper 32 and the second gripper 34 are positioned at a distance from the feed speed when the barb 2a is machined in the machining area of the barb 2a of the machined knife 58 And is configured to be relatively slow. That is, the speed at which the first gripper 32 and the second gripper 34 move in the direction of the feeding block 26 and the position of the knife 58 before the machining area of the knife 58 (i.e., the first gripper 32 When the first gripper 32 and the second gripper 34 are located in the machining area of the barbs 2a of the work knife 58 in comparison with the speed at which the worker moves the suture 2 to a position to grip and squeeze the suture thread 2 The first gripper 32 and the second gripper 34 slowly move in the machining area of the machined knife 58 barb 2a so that the suture 2 is moved by the machining knife 58 It is possible to precisely process the plurality of barbs 2a at regular intervals. The first gripper 32 and the second gripper 34 are connected to each other in the section where the first gripper 32 grips the suture 2 out of the feeding block 26, A machining knife 58 for forming a barb 2a on the suture 2 gripped by the first gripper 32 and the second gripper 34 in a section for pulling the suture 2 to a predetermined length, It is needless to say that it is possible to implement different speeds in the processing section and the suture (2) drop collection section by the transfer operation section 40. When the feeding operation portion 40 is constituted by the ball screw and the ball screw nut provided on the motor shaft of the driving motors 66 and 56B and the first gripper 32 is connected to the suture 2 (Second section) in which the first gripper 32 pulls the suture yarn 2 to a certain length and the moving speed to the suture 2 dropping section (second section) The cutting speed of the knife 58 and the barb 2a to form the barb 2a on the suture 2 gripped by the first gripper 32 and the second gripper 34 The rotation speed of the motor shaft of the drive motors 66 and 56B and the ball screw provided thereon is set to be higher than the rotation speed in the machining interval of the machining knife 58 barb 2a You can do it faster. In other words, the rotational speed of the ball screw in the first section, the second section and the fourth section may be made relatively faster than the rotational speed of the ball screw in the third section.
Therefore, according to the present invention, a process of gripping the sewing thread 2 for processing and pulling a certain length, cutting a suture 2 pulled to a predetermined length, a process of sewing the suture 2 to the barb 2 Since the suture 2 can be made by a series of processes in which a plurality of barbs 2a are machined at regular intervals on the suture 2 in an automated continuous process to make the suture 2, The manufacturing time of the barb 2a is considerably shortened and the barb 2a is easily machined.
The weight 28 is provided at a position where the suture thread 2 is inserted so that the suture thread 2 is held in the horizontal direction by adjusting the tension of the suture thread 2 so that the gripper 2, The end portion of the suture thread 2 (that is, the portion protruding from the feeding discharge end of the feeding block 26) is sagged or climbed downward, and the suture thread 2 ) Is prevented from being gripped properly, so that the reliability of the operation is high.
Further, in the present invention, since the suture thread 2 is held in the state of pulling the suture thread 2 tightly by driving the cross cylinder 37 before the suture thread 2 enters the barb machining region of the knife 58, 2 does not have a weak tension and sagging phenomenon during the barb machining process, and thus the operation of forming the barbs 2a by cutting the suture 2 with the processing knife 58 becomes more smooth. That is, since the suture 2 is pulled in advance before being cut by the cutting knife 58, the tension of the appropriate suture 2 is maintained, so that the suturing operation by the suture of the suture 2 becomes smooth.
In the present invention, the suture thread 2 is seated in the suture seating groove 72g of the suture base supporter 70 from the bottom, and the suture thread 2 is stably supported in the anteroposterior direction by the suture base supporter 70 The suture yarn 2 is shaken back and forth during the machining of the barb 2a by the cutting knife 58 so that the defect of the barb 2a can not be properly machined.
In addition, since the machining knife 58 is operated in the forward and backward directions in the region of the V groove-like space groove 72 formed in the suture base supporter 70, the barb 2a is formed, thereby improving the machining accuracy of the barb 2a And the angles of both inclined surfaces of the space groove portion 72 are inclined so as to correspond to the inclination angles of the processing knives 58 so that the cutting angle of the suture 2 formed by inclining by the processing knife 58 The forming angle of the barbs 2a can be precisely adjusted, thereby improving the machining accuracy of the barbs 2a. Particularly, the suture seating groove 72g is extended in the form of a flat groove extending downward at the lower end portion of the space groove portion 72. The suture seating groove 72g, which is located deeper than the space groove portion 72, Since the barb 2a is processed by the processing knife 58 in a state in which the suture thread 2 is seated on the suture thread 2, more stable processing of the barb 2a of the suture thread 2 and improved processing accuracy can be ensured.
In the present invention, a pair of first lower grip piece 32LG and first upper grip piece 32UG constituting the first gripper 32 are respectively provided with a first lower suture thread guide piece 32LP and a first upper suture thread 32G, A first right suture guide guide piece 32LP is provided on a first right side surface of the first lower grip piece 32LG and a first left suture guide guide piece 32LP is provided on a first left side surface The first upper suture thread guide piece 32UP is provided on the upper gripper thread 32. When the first upper grip piece 32UG is lifted up, A second lower suture guide member 34LP and a second upper suture guide member 34UP are provided on a pair of the second lower grip member 34LG and the second upper grip member 34UG, A second lower suture guide guide piece 34LP is provided on the second left side of the piece 34LG and a second upper suture guide piece 34LP is provided on the second right side surface of the second upper grip piece 34UG 34UP are provided so that the second upper suture thread 2G is also heard when the second upper grip piece 34UG is lifted up.
The first upper grip piece 32UG and the first upper suture thread 2 grip the same and the second upper grip piece 34UG and the second upper suture thread 2 grip the first gripper 32 and the second gripper 34 are released from the state of gripping the suture 2. In this suture 2 release state of the suture 2, a part of one end side of the suture 2 is engaged with the first lower grip piece 32LG, And the portion of the other end side of the suture thread 2 extends only over the grip portion of the second lower suture thread 34LG and the second lower suture thread 2 When the drop push bar 18 pushes the suture thread 2 downward and a part of both ends of the suture thread 2 is caught by the first gripper 32 or the second gripper 34 as it is, It is possible to more reliably prevent it. That is, a portion of both ends of the suture thread 2 is held between the first gripper piece 32LG and the first lower suture thread 2 grip piece portion located at the outermost side of the first gripper 32 and the second gripper 34, The suture thread 2 is stuck only on the grip portion of the lower right suture thread 2 and the lower right suture thread 34LG, , And reliability in collecting the suture (2) in the suture collection box (16) becomes higher.
In the present invention, the pair of first grip pieces 32G constituting the first gripper 32 and the pair of second grip pieces 34G constituting the second gripper 34 fit on the surfaces where they abut each other The jaws 33J are provided so that the sutures 2 are interposed between the jaws 33J and held in a gripped state. The jaws 33J are formed on the respective contact surfaces of the pair of first gripping pieces 32G and the second gripping pieces 34G in the present invention. The jaws 33J are formed on the first lower contact surface of the first gripper 32, The jaws 33J formed on the second lower contact surface and the jaws 33J formed on the second upper contact surface are engaged with the jaws 33J formed on the first upper contact surface and the jaws 33J formed on the second upper contact surface, 2 can be gripped in a state in which a plurality of bent portions are formed rather than being linearly drawn so that the state in which the suture 2 is gripped by the first gripper 32 and the second gripper 34 can be made larger , It is possible to more reliably prevent the suture yarn 2 from slipping off from the first gripper 32 and the second gripper 34 during machining. That is, the suture yarn 2 is held by the first grip piece 32G of the first gripper 32 and the second gripper 34 by the jaws 33J formed on the second grip piece 34G, A phenomenon that the suture 2 slides out of the first gripper 32 and the second gripper 34 during the machining of the barb 2a by the cutting knife 58 It is possible to completely prevent the knife 58 from slipping out of the first gripper 32 and the second gripper 34 due to a force applied when the suture thread 2 is cut.
The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.
Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.
