Cutting device for circular material with cutting discharge device

Abstract

The present invention relates to a round bar material cutting device equipped with a cutting discharge device, and more specifically, to a cutter holder that cuts the supplied round bar material supported by a lifting shock absorber cylinder, so that when the press-applying part strikes, the cushioning action of the lifting shock absorber cylinder prevents collision of components while cutting and processing only the round bar material, thereby improving work efficiency. In particular, the invention is configured to improve the convenience and safety of cutting round bar materials by simultaneous operation of a cutting discharge device equipped on a table die to forcibly discharge the cut round bar material inserted inside the cutter holder to the outside. The present invention comprises a table die (10) in which a housing assembly part (11), a cutter support part (14), and a liner fixing part (17) are continuously formed in the front direction in which a round bar material (C) is supplied, and in the rear direction in which a cut round bar material (C) is discharged; A low housing (20) that is mounted in the housing installation groove (11a) of the above housing assembly (11) and has an adjustment nut (22) fastened thereto through which a round bar material (C) is inserted in the center; A fixed holder (30) that is coupled to the cutter support (14) using a holder clamp (15) and has a round bar material (C) inserted through the center; A cutter holder (41) is positioned near the rear of the fixed holder (30) so that a round bar material (C) is transported through the center, and both sides of the cutter holder (41) are assembled with a liner member (17a) provided inside the liner fixing part (17), and a holder fixing member (45) coupled with a press pressing part (P) is fastened to the upper part of the cutter holder (41) so that the cutter holder (41) moves downward and cuts the round bar material (C) that has passed through the fixed holder (30); This is achieved by including a lifting shock absorber cylinder (50) that is fixed to each side of the liner fixing part (17) and has a cylinder rod coupled to the holder fixing member (45) of the cutter means (40), thereby creating a cushion damping part inside the cylinder when the holder fixing member (45) moves downward and decelerating or stopping the downward movement speed of the holder fixing member (45).

Description

Technology Field

[0001] The present invention relates to a round bar material cutting device equipped with a cutting discharge device, and more specifically, to a cutter holder that cuts the supplied round bar material supported by a lifting shock absorber cylinder, so that when the press-applying part strikes, the cushioning action of the lifting shock absorber cylinder prevents collision of components while cutting and processing only the round bar material, thereby improving work efficiency.

[0002] In particular, the invention is configured to improve the convenience and safety of cutting round bar materials by simultaneous operation of a cutting discharge device equipped on a table die to forcibly discharge the cut round bar material inserted inside the cutter holder to the outside. Background Technology

[0003] Generally, a round bar made of metal refers to a long rod with a circular cross-section produced through manufacturing processes such as rolling or extrusion at a steel mill, and it is a material that can be used to create various products using various forming devices.

[0004] In order to manufacture various products using the aforementioned round bar material, it was conventionally required to transport the large volume of stored round bar material to the workshop one by one, adjust the length according to the product size, and cut it. Furthermore, there was a problem in that the worker had to constantly monitor the process at the work site due to the repetitive task of transporting new round bar material after the above operation.

[0005] In addition, there was a problem in that if a worker was careless during the process of storing or repeatedly transporting the aforementioned heavy round bar material, safety accidents and industrial accidents causing musculoskeletal damage could occur due to collisions with the material, and noise generated during the transport operation could cause hearing loss, tinnitus, etc.

[0006] In addition, during the process of repeatedly cutting the supplied round bar material, frequent collisions occurred between components, causing parts to break or resulting in uneven cutting of the round bar material, which led to an increased defect rate.

[0007] In addition, there was a problem of inconvenience and reduced work efficiency in that when the cut round bar material got stuck and blocked the discharge port during the cutting process, the cutting device had to be stopped and the stuck round bar material had to be manually separated. Prior art literature

[0008] Republic of Korea Published Patent Application No. 10-2016-0108033. Round bar transfer device (Date of publication: September 19, 2016) The problem to be solved

[0009] The purpose of the present invention is to provide a round bar material cutting device equipped with a cutting discharge device, wherein, in the process of cutting a round bar material supplied by a press-pressing unit by striking it with a cutter holder connected to the press-pressing unit, the cutter holder is supported by a lifting shock absorber cylinder and configured to move only to a position for cutting the round bar material by the strike of the press-pressing unit.

[0010] Furthermore, the present invention aims to provide a round bar material cutting device equipped with a cutting discharge device configured to prevent collision of components through the cushioning action of a lifting shock absorber cylinder even when the cutter holder is struck, while cutting and processing only the round bar material and restoring it to its initial state.

[0011] In addition, the present invention aims to provide a round bar material cutting device equipped with a cutting discharge device that facilitates the cutting of round bar materials by configuring the cutting discharge device provided on the table die to sequentially force the cut round bar inserted inside the cutter holder to the outside through operation. means of solving the problem

[0012] The present invention for solving such technical problems is,

[0013] A table die (10) having a housing assembly part (11), a cutter support part (14), and a liner fixing part (17) formed continuously from the front direction where the round bar material (C) is supplied, to the rear direction where the cut round bar material (C) is discharged;

[0014] A low housing (20) that is mounted in the housing installation groove (11a) of the above housing assembly (11) and has an adjustment nut (22) fastened thereto through which a round bar material (C) is inserted in the center;

[0015] A fixed holder (30) that is coupled to the cutter support (14) using a holder clamp (15) and has a round bar material (C) inserted through the center;

[0016] A cutter holder (41) is positioned near the rear of the fixed holder (30) so that a round bar material (C) is transported through the center, and both sides of the cutter holder (41) are assembled with a liner member (17a) provided inside the liner fixing part (17), and a holder fixing member (45) coupled with a press pressing part (P) is fastened to the upper part of the cutter holder (41) so that the cutter holder (41) moves downward and cuts the round bar material (C) that has passed through the fixed holder (30);

[0017] This is achieved by including a lifting shock absorber cylinder (50) that is fixed to each side of the liner fixing part (17) and has a cylinder rod coupled to the holder fixing member (45) of the cutter means (40), thereby creating a cushion damping part inside the cylinder when the holder fixing member (45) moves downward and decelerating or stopping the downward movement speed of the holder fixing member (45).

[0018] Additionally, the table die (10) may further include a cutting discharge device (60) in which the arm driving means (70) moves downward in conjunction with the press pressing part (P) and the swing arm (63) rotates, and the housing insertion pin (64) of the lower housing (20) connected to the swing arm (63) moves in the rearward direction to press the holder insertion pin (67) of the fixed holder (30) and discharges the cut round bar material (C) in the cutter holder (41) toward the cutting round bar discharge port (44).

[0019] Additionally, the cutting discharge device (60) comprises: an arm drive shaft (61) in which an arm drive gear (62) provided on one side is supported on the bottom surface of the table die (10) and meshes with the drive shaft rack gear (75) of the arm drive means (70);

[0020] A swing arm (63) that is coupled with the above-mentioned arm drive shaft (61) and is positioned in the arm penetration hole (12) of the table die (10) and the arm insertion groove (23) of the lower housing (20), and rotates at a certain angle;

[0021] A housing insertion pin (64) that is inserted into a pin insertion hole (24) formed in the front direction of the lower housing (20) in communication with the above-mentioned arm insertion groove (23) and coupled to the upper part of the swing arm (63) by a pin fixing member (63a);

[0022] It may include a holder insertion pin (67) that is inserted into a pin penetration hole (34) formed by penetrating the fixing holder (30) in line with the pin insertion hole (24), and whose tip protrudes in the direction of the cutter holder (41) by horizontally moving and pressing the housing insertion pin (64) through the rotation of the swing arm (63).

[0023] Additionally, the above-mentioned arm driving means (70) is coupled to the side of the table die (10) and has a driving case (71) with a driving shaft through hole formed in the vertical direction;

[0024] A drive shaft pressing member (73) that is assembled through the case cover (72) of the drive case (71) and whose upper part contacts the press pressing part (P).

[0025] A gear drive shaft (74) that is coupled with a drive shaft press (73) inside the drive case (71) and has a drive shaft rack gear (75) formed at the bottom that meshes with the arm drive gear (62) of the cutting discharge device (60);

[0026] A drive shaft return spring (76) may be included, which is supported at one end by the drive case (71) and supports the bottom surface of the drive shaft press (73) to move the gear drive shaft (74) up and down.

[0027] Additionally, the lower housing (20) may further be configured with a housing pin fixing tube (65) in which a housing insertion pin (64) is inserted into a pin insertion hole in the direction of the fixing holder (30) from the arm insertion groove (23) and slides.

[0028] Additionally, in the pin penetration hole (34) of the fixed holder (30), a holder pin fixing member (35) is installed such that the pin return spring (37) and the holder insertion pin (67) provided in the pin return case (36) are elastically supported, and the pin head (67a) protrudes in the direction of the housing insertion pin (64) by penetrating the pin case cover (36a) on one side.

[0029] When the housing insertion pin (64) presses the pin head (67a), the pin extension part (67b) moves along the inner circumference of the pin return case (36) and can be configured so that the end of the holder insertion pin (67) is pulled out to the rear of the fixed holder (30) while compressing the pin return spring (37).

[0030] Additionally, on the table die (10), a liner bracket (19) is further fixedly installed at a distance from the rear of the liner fixing part (17), and a liner member (17a) is provided on the front of the liner bracket (19) facing the cutter holder (41), so that the cutter holder (41) is supported by the liner fixing part (17) and the liner bracket (19), respectively, and can be configured to move up or down. Effects of the invention

[0031] According to the present invention, in the process of cutting a round bar material by striking it with a cutter holder connected to a press-applying unit while the conveyed round bar material is supported by a fixed holder, the cutter holder is supported by a lifting shock absorber cylinder, so that it is configured to move only to the position for cutting the round bar material due to the internal pressure of the cylinder even when the press-applying unit strikes it, thereby improving the safety of the round bar cutting operation.

[0032] In addition, the cushioning action of the lifting shock absorber cylinder prevents collisions between components even when the cutter holder strikes during round bar cutting, allowing only the round bar material to be cut and processed, and the system is configured to quickly return to its initial state, thereby improving work efficiency.

[0033] In addition, by operating the cutting discharge device equipped on the table die by the press pressure unit to forcibly discharge the cut round bar inserted inside the cutter holder to the outside, it is possible to achieve effects such as improved convenience in the cutting operation of round bar materials, cost reduction through automation, and enhanced marketability. Brief explanation of the drawing

[0034] FIG. 1 is an exploded perspective view of a round bar material cutting device equipped with a cutting discharge device according to the present invention. FIG. 2 is a cross-sectional view illustrating the overall configuration of a round bar material cutting device equipped with a cutting discharge device according to the present invention. FIG. 3 is a side view illustrating a cutter means that is a component of the present invention. FIG. 4 is a cross-sectional view illustrating the operating state of a round bar material cutting device equipped with a cutting discharge device according to the present invention. FIG. 5 is a side view illustrating the operating state of the cutter means, which is a component of the present invention. FIG. 6 is a cross-sectional view illustrating the configuration of a cutting discharge device, which is a component of the present invention. FIG. 7 is a cross-sectional view illustrating the configuration of an arm driving means for operating a cutting discharge device, which is a component of the present invention. FIG. 8 is a cross-sectional view illustrating the state of discharging a round bar material cut by a cutting discharge device, which is a component of the present invention. Specific details for implementing the invention

[0035] The round bar material cutting device equipped with the cutting discharge device of the present invention is designed to improve work efficiency by ensuring that the cutter holder for cutting the supplied round bar material is supported by a lifting shock absorber cylinder, thereby preventing collision of components through the cushioning action of the lifting shock absorber cylinder when the press-applying part strikes, and cutting and processing only the round bar material.

[0036] In particular, the invention is configured to improve the convenience and safety of cutting round bar materials by simultaneous operation of a cutting discharge device equipped on a table die to forcibly discharge the cut round bar material inserted inside the cutter holder to the outside.

[0037] Hereinafter, the features of the configuration of a round bar material cutting device equipped with a cutting discharge device according to the present invention will be understood through embodiments described in detail with reference to the attached drawings.

[0038] The present invention is capable of various modifications and may take various forms, and embodiments are to be described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed forms, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0039] First, the round bar material cutting device (100) equipped with the cutting discharge device described in the present invention as shown in FIGS. 1 to 5 is designed to enable automation of the cutting operation by receiving a round bar material (C) with a long length and repeatedly performing the operation of cutting the round bar material (C) to a length set by the control unit (S), and forcibly discharging the cut round bar material (C) to the outside.

[0040] To this end, the present invention is configured such that a lower housing (20) and a fixing holder (30) capable of fixing a round bar material (C) supplied to a table die (10) are coupled to the front of the drawing, and a cutter holder (41) for cutting the round bar material (C) is installed on the rear. Since the configuration for fixing the round bar material (C) that moves through the horizontal centerline of the lower housing (20) and the fixing holder (30) is a technical configuration that is already generally known, a detailed description will be omitted.

[0041] The table die (10) has a housing assembly part (11), a cutter support part (14), and a liner fixing part (17) formed continuously from the front direction where the round bar material (C) is supplied to the rear direction where the cut round bar material (C) is discharged. The housing assembly part (11) has a housing installation groove (11a) formed through it for assembling a low housing (20), and the cutter support part (14) has a semicircular support surface formed at the bottom where a fixing holder (30) is placed. A holder clamp (15) is placed on the upper part of the fixing holder and fastened to the holder clamp (15) so that the fixing holder (30) is firmly connected.

[0042] The lower housing (20) is mounted in the housing installation groove (11a) of the housing assembly part (11), and by fastening the adjustment nut (22) through which a round bar material (C) is inserted in the center, the tip of the adjustment nut (22) contacts the fixed holder (30) coupled to the cutter support part (14), so that the round bar material (C) can be inserted and moved more easily.

[0043] And, a cutter means (40) including a fixing holder (30) is mounted on the rear side of the cutter support part (14), and a liner member (17a) arranged vertically on the liner fixing part (17) provided on the rear side of the cutter support part (14) is assembled so that the cutter holder (41) can be slidably assembled between the liner members (17a).

[0044] The cutter means (40) is configured such that a cutter holder (41) is positioned close to the rear of a fixed holder (30) to allow a round bar material (C) to be transported through the center, and the holder support surfaces (41a) on both sides of the cutter holder (41) are assembled with a liner member (17a) provided inside a liner fixing part (17) to allow for smooth vertical movement up or down, and a holder fixing member (45) coupled with a press pressing part (P) is fastened to the upper part of the cutter holder (41) so that the cutter holder (41) cuts the round bar material (C) that has passed through the fixed holder (30) while moving downward.

[0045] Here, the liner member (17a) facing the holder support surface (41a) of the cutter holder (41) is formed with a "V" groove shape to allow the cutter holder (41) to move up and down smoothly. Since the configuration of the liner member for the holder support surface (41a) to slide is a generally known technical configuration, a detailed description will be omitted.

[0046] Additionally, on the table die (10), a liner bracket (19) is fixedly installed in an upright form at a distance from the rear of the liner fixing part (17), and a liner member (17a) is provided on the front facing the cutter holder (41), so that the cutter holder (41) is supported on both sides and the rear by the liner fixing part (17) and the liner bracket (19), respectively, thereby enabling more stable up-and-down movement.

[0047] Here, the cutter holder (41) is configured such that a cutter assembly groove is formed on the front surface facing the fixed holder (30) to allow a slide cutter (43) to be replaced and the round bar material (C) is conveyed to the central hole of the slide cutter (43), and after the cutting operation, the cut round bar material (C) is discharged to the outside through a cutting round bar discharge port (44) formed in the rear direction of the cutter assembly groove.

[0048] At this time, the slide cutter (43) of the cutter holder (41) and the circle cutter (31) of the fixed holder (30) come into contact with each other while cutting the round bar material (C) when the cutter holder (41) moves downward. Since wear occurs due to repeated cutting operations, the cut portion of the round bar material (C) becomes irregular, so it is desirable to configure the slide cutter (43) and the circle cutter (31) to be replaceable.

[0049] Additionally, the cutter holder (41) is assembled so that a holder fixing member (45) is attached to the upper part and supported on the upper surface of the liner fixing member (17), and a lifting shock absorber cylinder (50) is fixed to each side of the liner fixing member (17) and the cylinder rod is attached to the lower surface of the holder fixing member (45) to create a cushion damping part in which air and gas are compressed inside the cylinder when the holder fixing member (45) moves downward, thereby decelerating or stopping the downward movement speed of the holder fixing member (45).

[0050] Since the configuration of the lifting shock absorber cylinder (50) is a known configuration of a generally used shock absorber cylinder, a detailed description will be omitted. After the cutter holder (41) is moved quickly together with the press pressure part (P) to cut the round bar material (C), the downward movement of the cutter holder (41) is controlled by the cushion damping part created inside the lifting shock absorber cylinder (50) to prevent collision and impact noise between the table die and the cutter holder, and the cutter holder (41) can be returned to its original position more easily.

[0051] And, the round bar material (C) cut by the cutter means (40) is configured to be forcibly discharged in the direction of the cutting round bar discharge port (44) by operating the cutting discharge device (60), and as shown in FIGS. 6 and 7, the arm driving means (70) operates the cutting discharge device (60) by the downward movement of the press pressing part (P).

[0052] The above cutting discharge device (60) is configured such that an arm driving means (70) that operates in conjunction with a press-pressing part (P) is mounted on a table die (10), and while rotating the swing arm (63) assembled in the lower housing (20) by a predetermined angle, the housing insertion pin (64) moves horizontally in the rear direction to press the holder insertion pin (67) of the fixed holder (30), thereby pushing the cut round bar material (C) fitted into the cutter holder (41) toward the cutting round bar discharge port (44) to discharge it.

[0053] As shown in FIGS. 6 and 7, the above cutting discharge device (60) has both sides of the arm drive shaft (61) supported by bearings in the bottom assembly space of the table die (10), and the arm drive gear (62) provided on one side meshes with the drive shaft rack gear (75) of the arm drive means (70).

[0054] Additionally, a swing arm (63) is positioned in the arm penetration hole (12) of the table die (10) and the arm penetration hole (12) of the lower housing (20), and the lower end of the swing arm (63) is coupled to the arm drive shaft (61), so that the upper end of the swing arm (63) rotates only by a certain angle inside the shape of the arm penetration hole (12) of the lower housing (20) around the arm drive shaft (61).

[0055] And the lower housing (20) is connected to the arm insertion groove (23) and forms a pin insertion hole (24) from the front direction to the rear direction, so that the housing insertion pin (64) is inserted into the pin insertion hole (24) and is mutually coupled to the upper part of the swing arm (63) by a pin fixing member (63a).

[0056] Here, in the lower housing (20), a pin insertion hole in the direction of the fixing holder (30) is expanded and molded in the arm insertion groove (23) to connect the housing pin fixing tube (65), and then the tip of the housing insertion pin (64) is inserted into the inner diameter of the housing pin fixing tube (65) to allow for more stable sliding movement, and after a certain period, the housing pin fixing tube (65) and the housing insertion pin (64) can be replaced so as to prevent malfunction due to wear.

[0057] In addition, a pin through hole (34) is formed in the fixed holder (30) facing the rear of the lower housing (20) in alignment with the housing insertion pin (64) so ​​that the holder insertion pin (67) is assembled through it, and the housing insertion pin (64) moves horizontally by the rotation of the swing arm (63) and presses the pin head (67a) of the holder insertion pin (67) so that the tip of the holder insertion pin (67) protrudes toward the cutter holder (41).

[0058] At this time, as an embodiment of the present invention, a holder pin fixing member (35) with a holder insertion pin (67) assembled inside is coupled to the pin penetration hole (34) of the fixed holder (30), so that the tip of the housing insertion pin (64) moves the pin head (67a) in the rear direction (from right to left in the drawing) and the end portion of the holder insertion pin (67) is pulled out toward the cutter holder (41).

[0059] The above holder pin fixing device (35) is configured such that a pin return spring (37) is provided inside a cylindrical pin return case (36), and the pin head (67a) of the holder insertion pin (67) is always pulled out in the direction of the housing insertion pin (64) by assembling the holder insertion pin (67) and a pin extension part (67b) that is stepped on the holder insertion pin (67) is further formed on the inner circumference of the pin return case (36), so that the pin return spring (37) is supported by the pin extension part (67b) while sliding along the inner circumference of the pin return case (36), thereby causing the holder pin fixing device (35) to be returned to its original position.

[0060] Accordingly, the pin through hole (34) of the fixed holder (30) is elastically supported by the pin return spring (37) and the holder insertion pin (67) provided in the pin return case (36), and the pin head (67a) protrudes in the direction of the housing insertion pin (64) through the pin case cover (36a) on one side, and when the housing insertion pin (64) of the lower housing (20) presses the pin head (67a), the pin extension part (67b) moves along the inner circumference of the pin return case (36) and compresses the pin return spring (37), and the end of the holder insertion pin (67) is pulled out to the rear of the fixed holder (30).

[0061] And, the arm driving means (70) for rotating the swing arm (63) of the cutting discharge device (60) is formed such that a driving case (71) is coupled to the side of the table die (10) as shown in FIG. 7, and a driving shaft through hole is formed vertically on the inside.

[0062] Additionally, a case cover (72) is assembled on the upper part of the drive case (71), and a drive shaft pressing member (73) is assembled through the case cover (72), and the drive shaft pressing member (73) is pressed by the downward movement of the press pressing part (P).

[0063] Additionally, a gear drive shaft (74) is provided inside the drive case (71), and a drive shaft rack gear (75) is formed at the top end, which is connected to the drive shaft press (73), and at the bottom end, which meshes with the arm drive gear (62) of the cutting discharge device (60). When the press pressing part (P) moves downward, the gear drive shaft (74) moves downward together with the drive shaft press (73) and rotates the meshed arm drive gear (62).

[0064] Here, a drive shaft return spring (76) is provided inside the drive case (71) so that a gear drive shaft (74) is inserted through it, and its lower end is supported by the drive case (71), and its upper end is supported by the bottom surface of the drive shaft press (73), so that when the gear drive shaft (74) moves downward, the drive shaft return spring (76) is compressed and, when the external force is removed, the drive shaft press (73) is pushed out so that it can easily return to its initial position.

[0065] Accordingly, as shown in FIG. 9, the swing arm (63) rotates counterclockwise by operating the arm driving means (70), and when the housing insertion pin (64) slides in the rearward direction, the holder insertion pin (67) of the cutter holder (41) moves in the rearward direction in conjunction with this, and the cutter holder (41) descends and repeats the operation of pushing the cut round bar material (C) that has been cut towards the cut round bar discharge port (44).

[0066] As described above, the embodiments explained are the most preferred examples of the present invention, but are not limited to the above embodiments. It is obvious to those skilled in the art that various modifications are possible within the scope of the technical spirit of the present invention. Explanation of the symbols

[0067] 10. Table stand 11. Housing assembly 14. Cutter support 15. Holder clamp 17. Lider fixing part 19. Liner bracket 20. Low housing 23. Arm insertion groove 24. Pin insertion hole 30. Fixing holder 33. Fixed tube installation groove 34. Pin penetration hole 35. Holder pin fixing device 40. Cutter means 41. Cutter holder 45. Holder holder bracket 50. Lifting shock absorber cylinder 60. Cutting discharge device 61. Arm drive shaft 62. Arm drive gear 63. Swing arm 64. Housing insertion pin 67. Holder insertion pin 70. Arm driving means 71. Drive case 73. Drive shaft press 74. Gear drive shaft 100. Round bar cutting device C. Round bar material P. Press pressure part S. Control unit

Claims

Claim 1 A table die (10) having a housing assembly part (11), a cutter support part (14), and a liner fixing part (17) formed in succession from the front direction where the round bar material (C) is supplied, to the rear direction where the cut round bar material (C) is discharged; a low housing (20) mounted in the housing installation groove (11a) of the housing assembly part (11) and having an adjustment nut (22) fastened through the center into which the round bar material (C) is inserted; a fixing holder (30) coupled to the cutter support part (14) using a holder clamp (15) and into which the round bar material (C) is inserted through the center; a cutter holder (41) is positioned close to the rear of the fixing holder (30) so that the round bar material (C) is transported through the center, and both sides of the cutter holder (41) are assembled with a liner member (17a) provided inside the liner fixing part (17), and on the upper part of the cutter holder (41) A round bar material cutting device equipped with a cutting discharge device, characterized by comprising: a cutter means (40) that cuts a round bar material (C) penetrating a fixed holder (30) by connecting a holder fixing member (45) combined with a press-pressing member (P) so that the cutter holder (41) moves downward and cuts the round bar material (C); and a lifting shock absorber cylinder (50) that is fixed to each side of the liner fixing member (17) and has a cylinder rod connected to the holder fixing member (45) of the cutter means (40), thereby creating a cushion damping member inside the cylinder when the holder fixing member (45) moves downward and decelerating or stopping the downward movement speed of the holder fixing member (45). Claim 2 A round bar material cutting device equipped with a cutting discharge device, wherein, in the first paragraph, the table die (10) further includes a cutting discharge device (60) in which the arm driving means (70) moves downward in conjunction with the press pressing part (P) and the swing arm (63) rotates, and the housing insertion pin (64) of the lower housing (20) connected to the swing arm (63) is moved in the rearward direction to press the holder insertion pin (67) of the fixed holder (30), thereby discharging the round bar material (C) cut by the cutter holder (41) toward the cutting round bar discharge port (44). Claim 3 In claim 2, the cutting discharge device (60) comprises: an arm drive shaft (61) supported on the bottom surface of the table die (10) and having an arm drive gear (62) provided on one side mesh with a drive shaft rack gear (75) of an arm drive means (70); a swing arm (63) that is coupled to the arm drive shaft (61) and is positioned in the arm penetration hole (12) of the table die (10) and the arm insertion groove (23) of the lower housing (20), and rotates at a certain angle; a housing insertion pin (64) that is inserted into a pin insertion hole (24) formed in the front direction of the lower housing (20) to communicate with the arm insertion groove (23) and is coupled to the upper part of the swing arm (63) by a pin fixing member (63a); and a pin penetration hole (34) that is inserted into a fixing holder (30) formed through the pin insertion hole (24) in line with the pin insertion hole (24), and the A round bar material cutting device equipped with a cutting discharge device, characterized by including a holder insertion pin (67) in which the tip of the housing insertion pin (64) is horizontally moved and pressed by the rotation of the swing arm (63) so that the tip protrudes toward the cutter holder (41). Claim 4 In claim 2, the arm driving means (70) comprises: a driving case (71) which is coupled to the side of the table die (10) and has a driving shaft through hole formed in the vertical direction; a driving shaft pressing member (73) which is assembled through the case cover (72) of the driving case (71) and whose upper end contacts the press-pressing part (P); a driving shaft rack gear (75) which is coupled to the driving shaft pressing member (73) inside the driving case (71) and has a drive shaft rack gear (75) formed at its lower end that meshes with the arm driving gear (62) of the cutting discharge device (60); and a driving shaft return spring (76) which is supported at one end by the driving case (71) and supports the bottom surface of the driving shaft pressing member (73) to move the gear driving shaft (74) up and down. Claim 5 A round bar material cutting device equipped with a cutting discharge device, characterized in that, in the third paragraph, the lower housing (20) further comprises a housing pin fixing tube (65) in which a housing insertion pin (64) is inserted into a pin insertion hole in the direction of the fixed holder (30) from the female insertion groove (23) and slides. Claim 6 In claim 3, a holder pin fixing member (35) is installed in the pin penetration hole (34) of the fixed holder (30), wherein the pin return spring (37) and the holder insertion pin (67) provided in the pin return case (36) are elastically supported, and the pin head (67a) protrudes in the direction of the housing insertion pin (64) through the pin case cover (36a) on one side, and when the housing insertion pin (64) presses the pin head (67a), the pin extension part (67b) moves along the inner circumference of the pin return case (36) and compresses the pin return spring (37), thereby configuring the end of the holder insertion pin (67) to be drawn out to the rear of the fixed holder (30). Claim 7 A round bar material cutting device equipped with a cutting discharge device, characterized in that, in the first paragraph, a liner bracket (19) is further fixedly installed at a distance from the rear of the liner fixing part (17) on the table die (10), and a liner member (17a) is provided on the front of the liner bracket (19) facing the cutter holder (41), so that the cutter holder (41) is supported by the liner fixing part (17) and the liner bracket (19) respectively and is configured to move up and down.

Images