Manufacturing method of upper strap of transmission mount of PHEV vehicle using progressive mold

Abstract

A method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to an embodiment of the present invention comprises manufacturing an upper strap (50) using a progressive mold (5) comprising a first lower mold (10), a first upper mold (20) disposed opposite to the first lower mold (10) on the upper part of the first lower mold (10), a second lower mold (30) provided on the other side of the first lower mold (10), and a second upper mold (40) disposed opposite to the second lower mold (30) on the upper part of the second lower mold (30), wherein the method comprises a first process of manufacturing the upper strap (50) in the space between the upper front surface of the first lower mold (10) and the second lower mold (30) and the lower front surface of the first upper mold (20) and the second upper mold (40), and the first lower mold (10) and the second The method comprises a second process for manufacturing an upper strap (50) in the space between the rear upper surface of the lower mold (30), the rear bottom surface of the first upper mold (20), and the second upper mold (40), wherein the first process comprises a piercing process in which a first cut surface (52) is formed on a strip (6) using a first punch (11), a first trimming process in which a first cut surface (56), a second cut surface (57), a first bend (58), and a first curved portion (59) of a wing portion (55) are formed first on the strip (6) that has undergone the piercing process using a second punch (12), a second trimming process in which a first cut surface (56), a second cut surface (57), a first bend (58), and a first curved portion (59) of a wing portion (55) are formed precisely on the strip (6) that has undergone the first trimming process using a third punch (13), and a fourth punch (14). A third trimming process for forming a groove (70) in the strip (6) that has undergone the second trimming process, using the above methodThe method is characterized by including a fourth trimming process in which a second curved portion (60) and a second cut surface (61) of a wing portion (55) are formed respectively on the strip (6) that has undergone the third trimming process using a fifth punch (15), and a notching process in which a second bend portion (62) is formed on the strip (6) that has undergone the fourth trimming process using a sixth punch (16).

Description

Technology Field

[0001] The present invention relates to a method for manufacturing an upper strap for a PHEV vehicle transmission mount using a progressive mold, and more specifically, to a method for manufacturing an upper strap for a PHEV vehicle transmission mount using a progressive mold that can manufacture the upper strap by sequentially and rapidly forming strips using a progressive mold, thereby reducing the manufacturing cost of the upper strap and improving dimensional accuracy through the improvement of the production process. Background Technology

[0002] FIG. 1 is a perspective view of a transmission mount and upper strap of a PHEV vehicle. Referring to FIG. 1, the transmission mount of a PHEV (Plug-in Hybrid Electric Vehicle) vehicle connects an internal combustion engine and an electric motor and serves to effectively transmit power to the transmission.

[0003] The above transmission mount is installed between the vehicle's engine and transmission and serves to absorb vibrations and shocks and stabilize the power transmission system.

[0004] The above transmission mount is formed of rubber material, which can absorb vibrations and shocks and relieve loads and stresses that may occur in the power transmission system.

[0005] Also, the upper strap is a vibration damping device for supporting the transmission mount of a PHEV vehicle, dampening the vibration of the transmission mount and serving to secure the lower frame of the transmission mount.

[0006] The upper strap is formed from PHY550C, a special steel with high rigidity and excellent vibration damping function, and the PHY550C material is a non-magnetic stainless steel containing high nitrogen, chromium, and manganese and has a hardness characteristic of 229 to 285 HBS.

[0007] The upper strap is thick at 2.5T and is formed from PHY550C, a high-rigidity special steel. When manufactured in a single process, plastic deformation is difficult, and due to the material characteristics, it is difficult to ensure dimensional accuracy as a difficult-to-form part, so there was a problem in that the shape could not be precisely realized.

[0008] In addition, there was a problem in the past where, when the wing sections provided on each side of the upper strap were bent simultaneously, the mold punch could not withstand the force, and cracks could occur in the bending area, resulting in reduced quality and productivity.

[0009] In addition, there was a problem in that productivity was reduced when the above upper strap was manufactured in a single process.

[0010] In addition, upper straps manufactured using conventional methods had the problem of low noise and vibration reduction effects. Prior art literature

[0011] (Patent Document 0001) KR 10-2020-0067340 A(Patent Document 0002) KR 10-2673005 B1 The problem to be solved

[0012] The present invention was devised to solve the above-mentioned problems, and the objective of the present invention is to provide a method for manufacturing an upper strap for a PHEV vehicle transmission mount using a progressive mold, which allows for the sequential and rapid forming of strips using a progressive mold to manufacture an upper strap, thereby reducing the manufacturing cost of the upper strap and improving dimensional accuracy through the improvement of the production process.

[0013] In addition, the objective of the present invention is to provide a method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, which can improve the dimensional precision and bending accuracy of the upper strap through piercing, first trimming, second trimming, third trimming, fourth trimming, notching, first bending, guiding, second bending, perforation, and cutting processes, thereby enabling the production of a high-quality upper strap.

[0014] In addition, the objective of the present invention is to provide a method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, which allows for the precise mass production of the upper strap through a progressive mold formed in two rows, thereby improving the production process and significantly reducing the manufacturing cost of the upper strap. means of solving the problem

[0015] In order to solve the technical problems described above, a method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to an embodiment of the present invention comprises manufacturing an upper strap (50) using a progressive mold (5) comprising a first lower mold (10), a first upper mold (20) disposed opposite to the first lower mold (10) on the upper part of the first lower mold (10), a second lower mold (30) provided on the other side of the first lower mold (10), and a second upper mold (40) disposed opposite to the second lower mold (30) on the upper part of the second lower mold (30), wherein the upper strap (50) is manufactured in the space between the upper front surface of the first lower mold (10) and the second lower mold (30) and the lower front surface of the first upper mold (20) and the second upper mold (40), and the first lower mold (10). and a second process for manufacturing an upper strap (50) in the space between the rear upper surface of the second lower mold (30) and the rear bottom surface of the first upper mold (20) and the second upper mold (40), wherein the first process comprises a piercing process for forming a first cut surface (52) on a strip (6) using a first punch (11), a first trimming process for forming a first cut surface (56), a second cut surface (57), a first bend (58), and a first curved portion (59) of a wing portion (55) on the strip (6) that has undergone the piercing process using a second punch (12), a second trimming process for precisely forming a first cut surface (56), a second cut surface (57), a first bend (58), and a first curved portion (59) of a wing portion (55) on the strip (6) that has undergone the first trimming process using a third punch (13), and a fourth A third trimming process in which a groove (70) is formed in the strip (6) that has undergone the second trimming process using a punch (14).The method is characterized by including a fourth trimming process in which a second curved portion (60) and a second cut surface (61) of a wing portion (55) are formed respectively on the strip (6) that has undergone the third trimming process using a fifth punch (15), and a notching process in which a second bend portion (62) is formed on the strip (6) that has undergone the fourth trimming process using a sixth punch (16).

[0016] Additionally, a horizontal plate (51) is formed in the center of the upper strap (50), and the first cut surface (52) is formed in the left-right direction on the front of the horizontal plate (51). The wing portion (55) is formed on each side of the horizontal plate (51), and the first cut surface (56) is formed in the front-rear direction on the outer surface of the wing portion (55). The second cut surface (57) is formed in the left-right direction on the rear of the wing portion (55). Between the first cut surface (56) and the second cut surface (57), the first curved portion (58) is formed in a curved and convex manner. At the front end of the first cut surface (56), the first curved portion (59) is formed in a curved and convex manner. At the rear side of the upper strap (50), the groove portion (70) is formed in a concave manner. At the front end of the first curved portion (59), the second The curved portion (60) is formed in a curved and concave manner, the second cut surface (61) is formed in the forward direction at the front end of the second curved portion (60), and the second curved portion (62) is formed in a curved and convex manner between the second cut surface (61) and the first cut surface (52).

[0017] Additionally, a first bending process for first bending the front of the wing portion (55) and the horizontal plate (51) downward; a guiding process for placing the strip (6) that has undergone the first bending process onto a guide block (32) so that the front of the wing portion (55) and the horizontal plate (51) bent in the first bending process can each be positioned in a downward direction; a second bending process for secondarily bending the front of the wing portion (55) and the horizontal plate (51) that has undergone the guiding process downward to form a first bending portion (63), a second bending portion (64), a third bending portion (65), and a fourth bending portion (66), respectively; and a drilling process for forming a first slot hole (51a), a second slot hole (51b), and a through hole (51c), respectively, in the horizontal plate (51) that has undergone the second bending process using a seventh punch (46), an eighth punch (47), and a ninth punch (48). The method further includes a cutting process for manufacturing an upper strap (50) by using a 10th punch (49) to cut the strip (6) that has undergone the perforation process to form a third cut surface (53).

[0018] Additionally, the first bend portion (63) is formed in a curved manner between the horizontal plate (51) and the wing portion (55), the second bend portion (64) is formed in a curved manner in front of the horizontal plate (51), the third bend portion (65) is formed in a curved manner between the first bend portion (63) and the second bend portion (64), the fourth bend portion (66) is formed in a curved manner below the third bend portion (65), the first slot hole (51a) is formed through the upper surface of the horizontal plate (51), the second slot hole (51b) is formed through the upper surface of the horizontal plate (51) and is provided on one side of the first slot hole (51a), the through hole (51c) is formed through the upper surface of the horizontal plate (51) and is provided in front of the first slot hole (51a), and the horizontal The rear surface of the plate (51) is characterized by having the third cut surface (53) formed in the left-right direction.

[0019] Additionally, the first bending process comprises a first step in which the strip (6) that has undergone the notching process is placed on the upper surface of the first fixed block (31), a second step in which the second fixed block (41) presses the upper surface of the horizontal plate (51), and a third step in which the lifting / lowering block (42) moves downward to press the front of the wing portion (55) and the horizontal plate (51) downward, thereby bending the front of the wing portion (55) and the horizontal plate (51) downward; wherein the first fixed block (31) is provided on one side of the second lower mold (30), the second fixed block (41) is provided on one side of the second upper mold (40), and is positioned on the upper side of the first fixed block (31) opposite to the first fixed block (31), and the lifting / lowering block (42) is positioned on both sides of the second fixed block (41) and the front of the second fixed block (41), respectively It is characterized by being formed to surround and movable in the vertical direction, and having a first gap space (42a) formed in the space between the second fixed block (41) and the lifting / lowering block (42) so that the front of the wing portion (55) and the horizontal plate (51) can be bent.

[0020] Additionally, the second bending process comprises a fourth step in which the strip (6) that has undergone the guide process is placed on the upper surface of the first fastening block (33), a fifth step in which the second fastening block (43) presses the upper surface of the horizontal plate (51), and a sixth step in which the moving block (45) moves downward to press the front of the wing portion (55) and the horizontal plate (51) downward, thereby secondarily bending the front of the wing portion (55) and the horizontal plate (51) downward to form the first bending portion (63), the second bending portion (64), the third bending portion (65), and the fourth bending portion (66), respectively; wherein the guide block (32) is provided on the other side of the first fixing block (31), the first fastening block (33) is provided on the other side of the guide block (32), and the second fastening block (43) is provided on the other side of the second fixing block (41); and A first fastening block (33) is positioned on the upper side of the first fastening block (33) in opposition to the first fastening block (33), and the movable block (45) is formed to surround both sides of the second fastening block (43) and the front of the second fastening block (43), and is formed to be movable in the vertical direction. A second gap space is formed in the space between the second fastening block (43) and the movable block (45) so that the front of the wing portion (55) and the horizontal plate (51) can be bent, respectively. A first R portion (33a) is formed curved at both ends of the upper surface of the first fastening block (33) so that the first bending portion (63) can be formed, and a second R portion (33b) is formed curved at the front end of the upper surface of the first fastening block (33) so that the second bending portion (64) can be formed. Between the first R portion (33a) and the second R portion (33b), the third The third R-section (33c) is formed in a curved manner so that a bending section (65) can be formed, and the fourth R-section (33d) is formed in a curved manner between the front and side of the first fastening block (33) so that a fourth bending section (66) can be formed. Effects of the invention

[0021] In the method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention, the strip can be formed sequentially and rapidly using a progressive mold to manufacture the upper strap, thereby reducing the manufacturing cost of the upper strap and improving dimensional accuracy through the improvement of the production process.

[0022] In addition, in the method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention, the dimensional precision and bending accuracy of the upper strap can be improved through piercing, first trimming, second trimming, third trimming, fourth trimming, notching, first bending, guiding, second bending, perforation, and cutting processes, thereby having the effect of manufacturing a high-quality upper strap.

[0023] In addition, in the method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention, the upper strap can be manufactured precisely in large quantities through a progressive mold formed in two rows, thereby improving the production process and having the effect of significantly reducing the manufacturing cost of the upper strap. Brief explanation of the drawing

[0024] FIG. 1 is a perspective view of the transmission mount and upper strap of a PHEV vehicle. FIG. 2 is a perspective view of the first lower mold. Figure 3 is a plan view of the first lower mold. FIG. 4 is a perspective view of the first upper mold viewed from below. Figure 5 is a bottom view of the first upper mold. Figure 6 is a plan view of the strip in processes S10 to S60. Figure 7 is a unfolded view of the strip. FIG. 8 is a perspective view of the second lower mold. Figure 9 is a plan view of the second lower mold. FIG. 10 is a perspective view of the second upper mold viewed from below. FIG. 11 is a bottom view of the second upper mold. Figure 12 is a plan view of the strip in processes S70 to S110. Fig. 13 is a plan view of the upper strap. Fig. 14 is a perspective view of the upper strap. FIG. 15 is a cross-sectional view of the second lower mold and the second upper mold cut along the line AA shown in FIG. 9. FIG. 16 is a cross-sectional view of the second lower mold and the second upper mold cut along the BB line shown in FIG. 9. Specific details for implementing the invention

[0025] Hereinafter, in order to explain in detail enough for a person skilled in the art to easily implement the technical concept of the present invention, embodiments of the present invention will be described with reference to the attached drawings.

[0026] However, the following examples are merely illustrative to aid in understanding the present invention and do not reduce or limit the scope of the present invention.

[0027] Furthermore, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.

[0028] A manufacturing apparatus (1) for a PHEV vehicle transmission mount upper strap using a progressive mold according to one embodiment of the present invention is applied to manufacture an upper strap (50) using a progressive mold (5) comprising a first lower mold (10), a first upper mold (20) positioned opposite to the first lower mold (10) on the upper part of the first lower mold (10), a second lower mold (30) provided on the other side of the first lower mold (10), and a second upper mold (40) positioned opposite to the second lower mold (30) on the upper part of the second lower mold (30).

[0029] A method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention is as follows.

[0030] First, in the first process, an upper strap (50) is manufactured in the space between the upper front surface of the first lower mold (10) and the second lower mold (30), and the lower front surface of the first upper mold (20) and the second upper mold (40). (S1)

[0031] Then, in the second process, an upper strap (50) is manufactured in the space between the rear upper surface of the first lower mold (10) and the second lower mold (30), and the rear lower surface of the first upper mold (20) and the second upper mold (40). (S2)

[0032] Meanwhile, the first process for manufacturing an upper strap (50) in the space between the front of the first lower mold (10) and the second lower mold (30), and the front of the first upper mold (20) and the second upper mold (40) is as follows.

[0033] FIG. 2 is a perspective view of the first lower mold (10), FIG. 3 is a plan view of the first lower mold (10), FIG. 4 is a perspective view of the first upper mold (20) viewed from below, FIG. 5 is a bottom view of the first upper mold (20), FIG. 6 is a plan view of the strip (6) in processes S10 to S60, and FIG. 7 is an unfolded view of the strip (6). Referring to FIG. 2 to 7, in the piercing process, a first cut surface (52) is formed on the strip (6) using a first punch (11). (S10)

[0034] At this time, the first punch (11) is provided on one side of the front of the first lower mold (10). The cross-section of the first punch (11) is formed in a rectangular shape in the left-right direction. A horizontal plate (51) is formed in the center of the upper strap (50). The first cut surface (52) is formed in the left-right direction on the front of the horizontal plate (51).

[0035] After that, in the first trimming process, the first cut surface (56), the second cut surface (57), the first bend (58), and the first curve (59) of the wing portion (55) are formed first on the strip (6) that has undergone the piercing process using the second punch (12). (S20)

[0036] At this time, the second punch (12) is provided at the rear of the first punch (11). Then, the wing portions (55) are formed on each side of the horizontal plate (51). Then, the first cutting surface (56) is formed in the front-rear direction on the outer surface of the wing portion (55). Then, the second cutting surface (57) is formed in the left-right direction on the rear surface of the wing portion (55).

[0037] And, between the first cut surface (56) and the second cut surface (57), the first curved portion (58) is formed in a curved and convex manner. And, at the front of the first cut surface (56), the first curved portion (59) is formed in a curved and convex manner.

[0038] After that, in the second trimming process, the first cut surface (56), second cut surface (57), first bend (58), and first curve (59) of the wing portion (55) are precisely formed on the strip (6) that has undergone the first trimming process using the third punch (13). (S30)

[0039] At this time, the third punch (13) is provided on the other side of the second punch (12). And, the third punch (13) is formed with the same shape and size as the second punch (12).

[0040] After that, in the third trimming process, a fourth punch (14) is used to form a groove (70) in the strip (6) that has undergone the second trimming process. (S40)

[0041] At this time, the fourth punch (14) is provided on the other side of the third punch (13). And, the number of the fourth punches (14) is formed as two.

[0042] And, the groove (70) is formed concavely on each rear side of the upper strap (50). Then, a first curved surface (71) is formed curved and convexly on one rear side of the groove (70). Then, a second curved surface (72) is formed curved and convexly on the other rear side of the groove (70).

[0043] Then, a third curved surface (73) is formed in a curved and concave shape in front of the first curved surface (71). Then, a fourth curved surface (74) is formed in a curved and concave shape in front of the second curved surface (72). Then, a vertical surface (75) is formed in the left-right direction between the third curved surface (73) and the fourth curved surface (74).

[0044] After that, in the fourth trimming process, the fifth punch (15) is used to form the second curved portion (60) and the second cut surface (61) of the wing portion (55) on the strip (6) that has undergone the third trimming process, respectively. (S50)

[0045] At this time, the fifth punch (15) is provided on the other side of the fourth punch (14). Then, the second curved section (60) is formed in a curved and concave manner at the front end of the first curved section (59). Then, the second cutting surface (61) is formed in the forward direction at the front end of the second curved section (60).

[0046] After that, in the notching process, a second bend (62) is formed on the strip (6) that has undergone the fourth trimming process using the sixth punch (16). (S60)

[0047] At this time, the sixth punch (16) is provided on the other side of the fifth punch (15). And, between the second cutting surface (61) and the first cutting surface (52), the second curved portion (62) is formed in a curved and convex manner.

[0048] FIG. 8 is a perspective view of the second lower mold (30), FIG. 9 is a plan view of the second lower mold (30), FIG. 10 is a perspective view of the second upper mold (40) viewed from below, FIG. 11 is a bottom view of the second upper mold (40), FIG. 12 is a plan view of the strip (6) in the S70~S110 process, FIG. 13 is a plan view of the upper strap (50), and FIG. 14 is a perspective view of the upper strap (50).

[0049] Referring to FIGS. 8 to 14, in the first bending process, the front of the wing portion (55) and the horizontal plate (51) is first bent downwards. (S70)

[0050] After that, in the guide process, the strip (6) that has undergone the first bending process is placed on the guide block (32) so that the front of the wing portion (55) and the horizontal plate (51) bent in the first bending process are each positioned in a downward direction. (S80)

[0051] After that, in the second bending process, the front of the wing portion (55) and the horizontal plate (51) that have undergone the guide process are bent downwards a second time to form the first bend portion (63), the second bend portion (64), the third bend portion (65), and the fourth bend portion (66), respectively. (S90)

[0052] At this time, the first bend portion (63) is formed in a curved manner between the horizontal plate (51) and the wing portion (55). Then, the second bend portion (64) is formed in a curved manner in front of the horizontal plate (51). Then, the third bend portion (65) is formed in a curved manner between the first bend portion (63) and the second bend portion (64). Then, the fourth bend portion (66) is formed in a curved manner at the lower part of the third bend portion (65).

[0053] After that, in the drilling process, the 7th punch (46), the 8th punch (47), and the 9th punch (48) are used to form the 1st slot hole (51a), the 2nd slot hole (51b), and the through hole (51c) respectively in the horizontal plate (51) that has undergone the 2nd bending process. (S100)

[0054] Thereby, the first slot hole (51a) is formed through the upper surface of the horizontal plate (51). And, the first slot hole (51a) is formed in the front-rear direction.

[0055] And, the second slot hole (51b) is formed through the upper surface of the horizontal plate (51) and is provided on one side of the first slot hole (51a). And, the second slot hole (51b) is formed in the front-rear direction.

[0056] And, the through hole (51c) is formed through the upper surface of the horizontal plate (51) and is provided in front of the first slot hole (51a). And, the cross-section of the through hole (51c) is formed in a circular shape.

[0057] And, the seventh punch (46) is provided on the other side of the first fastening block (33). And, the cross-section of the seventh punch (46) is formed with the same shape and size as the cross-section of the first slot hole (51a).

[0058] And, the eighth punch (47) is provided on one side of the seventh punch (46). And, the cross-section of the eighth punch (47) is formed with the same shape and size as the cross-section of the second slot hole (51b).

[0059] And, the ninth punch (48) is provided in front of the seventh punch (46). And, the cross-section of the ninth punch (48) is formed with the same shape and size as the cross-section of the through hole (51c).

[0060] After that, in the cutting process, the strip (6) that has undergone the perforation process is cut using the 10th punch (49) to form the third cut surface (53), thereby manufacturing the upper strap (50). (S110)

[0061] At this time, the 10th punch (49) is provided on the other side of the 7th punch (46). The cross-section of the 10th punch (49) is formed in a rectangular shape in the left-right direction. The third cut surface (53) is formed in the left-right direction on the rear surface of the horizontal plate (51).

[0062] FIG. 15 is a cross-sectional view of the second lower mold (30) and the second upper mold (40) cut along the line AA shown in FIG. 9, and FIG. 16 is a cross-sectional view of the second lower mold (30) and the second upper mold (40) cut along the line BB shown in FIG. 9. Referring to FIG. 15 and FIG. 16, in the first bending process, the strip (6) that has undergone the notching process is placed on the upper surface of the first fixing block (31). (S71)

[0063] After that, the second fixed block (41) presses the upper surface of the horizontal plate (51). (S72)

[0064] After that, the lifting block (42) moves downward and presses the front of the wing portion (55) and the horizontal plate (51) downward, thereby bending the front of the wing portion (55) and the horizontal plate (51) downward. (S73)

[0065] Here, the first fixed block (31) is provided on one side of the second lower mold (30). The first fixed block (31) is formed in the shape of a rectangular parallelepiped in the front-rear direction.

[0066] And, the second fixed block (41) is provided on one side of the second upper mold (40) and is positioned on the upper part of the first fixed block (31) so as to face the first fixed block (31). And, the second fixed block (41) is formed in the shape of a rectangular parallelepiped in the front-rear direction. And, the length in the left-right direction of the second fixed block (41) is formed to be smaller than the length in the left-right direction of the first fixed block (31).

[0067] Furthermore, the lifting / lowering block (42) is formed to surround both sides of the second fixed block (41) and the front of the second fixed block (41), respectively, and is formed to be movable in the vertical direction. Specifically, the lifting / lowering block (42) is formed in a U-shape when viewed from below. Additionally, a first gap space (42a) is formed in the space between the second fixed block (41) and the lifting / lowering block (42) so that the front of the wing portion (55) and the horizontal plate (51) can be bent.

[0068] Meanwhile, in the second bending process, the strip (6) that has passed through the guide process is placed on the upper surface of the first fastening block (33). (S91)

[0069] At this time, the guide block (32) is provided on the other side of the first fixing block (31). At this time, the guide block (32) is formed in the shape of a rectangular parallelepiped in the front-rear direction. And, the first fastening block (33) is provided on the other side of the guide block (32). And, the first fastening block (33) is formed in the shape of a rectangular parallelepiped in the front-rear direction.

[0070] After that, the second fastening block (43) presses the upper surface of the horizontal plate (51). (S92)

[0071] At this time, the second fastening block (43) is formed in the shape of a rectangular parallelepiped in the front-rear direction. Also, the length in the left-right direction of the second fastening block (43) is formed to be smaller than the length in the left-right direction of the first fastening block (33). Furthermore, the second fastening block (43) is provided on the other side of the second fixing block (41) and is positioned on the upper part of the first fastening block (33) so as to face the first fastening block (33).

[0072] After that, the moving block (45) moves downward and presses the front of the wing portion (55) and the horizontal plate (51) downward, thereby secondarily bending the front of the wing portion (55) and the horizontal plate (51) downward to form the first bend portion (63), the second bend portion (64), the third bend portion (65), and the fourth bend portion (66), respectively. (S93)

[0073] At this time, the moving block (45) is formed to surround both sides of the second fastening block (43) and the front of the second fastening block (43), respectively, and is formed to be movable in the up and down direction. Specifically, the moving block (45) is formed in a U-shape.

[0074] And, a second gap space is formed in the space between the second fastening block (43) and the moving block (45) so that the front of the wing portion (55) and the horizontal plate (51) can be bent, respectively.

[0075] Then, a first R-section (33a) is formed in a curved manner at each end of the upper surface of the first fastening block (33) so that the first bending section (63) can be formed. Then, a second R-section (43b) is formed in a curved manner at the front end of the upper surface of the first fastening block (33) so that the second bending section (64) can be formed. Then, a third R-section (33c) is formed in a curved manner between the first R-section (33a) and the second R-section (33b) so that the third bending section (65) can be formed. Then, a fourth R-section (33d) is formed in a curved manner between the front and side surfaces of the first fastening block (33) so that the fourth bending section (66) can be formed.

[0076] In the method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention, the strip (6) is formed sequentially and rapidly using a progressive mold (5) to manufacture the upper strap (50), thereby reducing the manufacturing cost of the upper strap (50) and improving dimensional accuracy through the improvement of the production process.

[0077] In addition, in the method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention, the dimensional precision and bending accuracy of the upper strap (50) can be improved through piercing, first trimming, second trimming, third trimming, fourth trimming, notching, first bending, guiding, second bending, perforation, and cutting processes, thereby having the effect of manufacturing a high-quality upper strap (50).

[0078] In addition, in the method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold according to one embodiment of the present invention, the upper strap (50) can be manufactured precisely in large quantities through a progressive mold (5) formed in two rows, thereby improving the production process and having the effect of significantly reducing the manufacturing cost of the upper strap (50).

[0079] As described above, the main technical concept of the present invention is to provide a method for manufacturing an upper strap of a PHEV vehicle transmission mount using a progressive mold. The embodiment described above with reference to the drawings is merely one embodiment, and the true scope of the present invention is based on the patent claims, but extends to various equivalent embodiments that may exist. Explanation of the symbols

[0080] 1: Upper strap manufacturing device 2: Transmission mount 5: Progressive die 6: Strip 10: 1st lower die 11: 1st punch 12: Second Punch 13: Third Punch 14: 4th Punch 15: 5th Punch 16: 6th punch 20: 1st upper mold 30: Second lower mold 31: First fixed block 32: Guide block 33: First fastening block 33a: Part 1 R 33b: Part 2 R 33c: Part 3 R 33d: Part 4 R 40: Second upper mold 41: Second fixed block 42: Lifting / Lowering Block 42a: First Gaps Space 43: Second connecting block 45: Moving block 45a: Second gap space 46: Seventh punch 47: 8th Punch 48: 9th Punch 49: 10th Punch 50: Upper Strap 51: Horizontal plate 51a: First slot hole 51b: Second slot hole 51c: Through hole 52: 1st incision surface 53: 3rd incision surface 55: Wing section 56: First section 57: Second incision surface 58: First bend 59: 1st curve section 60: 2nd curve section 61: Second section 62: Second bend 63: 1st bend section 64: 2nd bend section 65: 3rd bend 66: 4th bend 70: Groove 71: First curved surface 72: Second curve surface 73: Third curve surface 74: 4th curved surface 75: Vertical surface

Claims

Claim 1 A method for manufacturing an upper strap (50) for a PHEV vehicle transmission mount using a progressive mold (5) comprising a first lower mold (10), a first upper mold (20) disposed opposite to the first lower mold (10) on the upper part of the first lower mold (10), a second lower mold (30) provided on the other side of the first lower mold (10), and a second upper mold (40) disposed opposite to the second lower mold (30) on the upper part of the second lower mold (30), wherein the method comprises: a first process of manufacturing the upper strap (50) in the space between the upper front surface of the first lower mold (10) and the second lower mold (30) and the lower front surface of the first upper mold (20) and the second upper mold (40); and a second process for manufacturing an upper strap (50) in the space between the rear upper surface of the first lower mold (10) and the second lower mold (30), and the rear lower surface of the first upper mold (20) and the second upper mold (40); wherein the first process comprises a piercing process for forming a first cut surface (52) on a strip (6) using a first punch (11); and a first trimming process for forming a first cut surface (56), a second cut surface (57), a first bend (58), and a first curve (59) of a wing portion (55) on the strip (6) that has undergone the piercing process using a second punch (12). A second trimming process in which a first cut surface (56), a second cut surface (57), a first bend (58), and a first curve (59) of a wing portion (55) are precisely formed on a strip (6) that has undergone the first trimming process using a third punch (13); a third trimming process in which a groove (70) is formed on a strip (6) that has undergone the second trimming process using a fourth punch (14); a fourth trimming process in which a second curve (60) and a second cut surface (61) of a wing portion (55) are respectively formed on a strip (6) that has undergone the third trimming process using a fifth punch (15); and a notching process in which a second bend (62) is formed on a strip (6) that has undergone the fourth trimming process using a sixth punch (16).A method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, characterized by including: Claim 2 In claim 1, a horizontal plate (51) is formed in the center of the upper strap (50), and the first cut surface (52) is formed in the left-right direction on the front surface of the horizontal plate (51), and the wing portion (55) is formed on each side of the horizontal plate (51), and the first cut surface (56) is formed in the front-rear direction on the outer surface of the wing portion (55), and the second cut surface (57) is formed in the left-right direction on the rear surface of the wing portion (55), and the first curved portion (58) is formed in a curved and convex manner between the first cut surface (56) and the second cut surface (57), and the first curved portion (59) is formed in a curved and convex manner at the front end of the first cut surface (56), and the groove portion (70) is formed concavely on each rear side of the upper strap (50), and the second A method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, characterized in that a curved portion (60) is formed in a curved and concave manner, a second cut surface (61) is formed in a forward direction at the front end of the second curved portion (60), and a second curved portion (62) is formed in a curved and convex manner between the second cut surface (61) and the first cut surface (52). Claim 3 In claim 1, a first bending process for first bending the front of the wing portion (55) and the horizontal plate (51) downward; a guiding process for placing the strip (6) that has undergone the first bending process onto a guide block (32) so that the front of the wing portion (55) and the horizontal plate (51) bent in the first bending process can each be positioned in a downward direction; and a second bending process for secondarily bending the front of the wing portion (55) and the horizontal plate (51) that has undergone the guiding process downward to form a first bending portion (63), a second bending portion (64), a third bending portion (65), and a fourth bending portion (66), respectively. A method for manufacturing an upper strap for a PHEV vehicle transmission mount using a progressive mold, further comprising: a perforation process in which a first slot hole (51a), a second slot hole (51b), and a through hole (51c) are formed in a horizontal plate (51) that has undergone the second bending process using a seventh punch (46), an eighth punch (47), and a ninth punch (48); and a cutting process in which a strip (6) that has undergone the perforation process is cut using a tenth punch (49) to form a third cut surface (53), thereby manufacturing an upper strap (50). Claim 4 In claim 3, the first bend portion (63) is formed in a curved manner between the horizontal plate (51) and the wing portion (55), the second bend portion (64) is formed in a curved manner in front of the horizontal plate (51), the third bend portion (65) is formed in a curved manner between the first bend portion (63) and the second bend portion (64), the fourth bend portion (66) is formed in a curved manner below the third bend portion (65), the first slot hole (51a) is formed through the upper surface of the horizontal plate (51), the second slot hole (51b) is formed through the upper surface of the horizontal plate (51) and is provided on one side of the first slot hole (51a), the through hole (51c) is formed through the upper surface of the horizontal plate (51) and is provided in front of the first slot hole (51a). A method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, characterized in that the third cut surface (53) is formed in the left-right direction on the rear surface of the horizontal plate (51). Claim 5 In claim 3, the first bending process comprises: a first step in which the strip (6) that has undergone the notching process is placed on the upper surface of the first fixing block (31); and a second step in which the second fixing block (41) presses the upper surface of the horizontal plate (51). A third step comprising: a lifting / lowering block (42) moving downward to press the front of the wing portion (55) and the horizontal plate (51) downward, thereby bending the front of the wing portion (55) and the horizontal plate (51) downward; wherein the first fixing block (31) is provided on one side of the second lower mold (30), the second fixing block (41) is provided on one side of the second upper mold (40), and is positioned opposite to the first fixing block (31) on the upper side of the first fixing block (31); the lifting / lowering block (42) is formed to surround both sides of the second fixing block (41) and the front of the second fixing block (41), respectively, and is formed to be movable in the up and down direction; and in the space between the second fixing block (41) and the lifting / lowering block (42), a first gap is formed so that the front of the wing portion (55) and the horizontal plate (51) can be bent. A method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, characterized in that a space (42a) is formed. Claim 6 In claim 3, the second bending process comprises: a fourth step in which the strip (6) that has undergone the guide process is placed on the upper surface of the first fastening block (33); a fifth step in which the second fastening block (43) presses the upper surface of the horizontal plate (51); and a sixth step in which the moving block (45) moves downward to press the front of the wing portion (55) and the horizontal plate (51) downward, thereby secondarily bending the front of the wing portion (55) and the horizontal plate (51) downward to form the first bend portion (63), the second bend portion (64), the third bend portion (65), and the fourth bend portion (66), respectively.The guide block (32) is provided on the other side of the first fixed block (31), the first fastening block (33) is provided on the other side of the guide block (32), the second fastening block (43) is provided on the other side of the second fixed block (41), and is positioned opposite to the first fastening block (33) on the upper side of the first fastening block (33), and the movable block (45) is formed to surround both sides of the second fastening block (43) and the front of the second fastening block (43), respectively, and is formed to be movable in the vertical direction, and a second gap space is formed in the space between the second fastening block (43) and the movable block (45) so that the front of the wing portion (55) and the horizontal plate (51) can be bent, respectively, and the first R portion (33a) is each bent so that the first bending portion (63) can be formed at both ends of the upper surface of the first fastening block (33). A method for manufacturing a PHEV vehicle transmission mount upper strap using a progressive mold, characterized in that a second R-section (33b) is formed in a curved manner so that the second bending section (64) can be formed on the front edge of the upper surface of the first fastening block (33), a third R-section (33c) is formed in a curved manner so that the third bending section (65) can be formed between the first R-section (33a) and the second R-section (33b), and a fourth R-section (33d) is formed in a curved manner so that the fourth bending section (66) can be formed between the front and side surfaces of the first fastening block (33).

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