Stamping device and high-precision cold stamping die thereof

Abstract

The stamping device and the high-precision cold stamping die are used for machining an exhaust plate of a compressor, the stamping device comprises an upper die and a lower die, a mounting block is arranged at the top of the upper die, a positioning hole is formed in the bottom of the lower die, a first locking groove is further formed in the side end of the lower die, a second locking groove is formed in the side end of the upper die, a locking block is arranged in the first locking groove, and a hinge hole is formed in one end of the locking block. A hinge hole is formed in one end of the upper die, an insertion hole is formed in the other end of the lower die, a hinge rod is further arranged in the first lock groove and matched with the hinge hole, a threaded hole is formed in the second lock groove, a threaded column is further arranged in the lock hole, and locking of the upper die and the lower die is achieved by arranging the lock block and matching of the threaded column and the insertion hole. When the upper die and the lower die are detached, the upper die and the lower die can be detached in a die closing and locking state, so that the upper die and the lower die are prevented from being separated.

Description

Technical Field

[0001] The invention relates to a punching machine die, in particular to a punching device and a high-precision cold punching die thereof. Background Art

[0002] At present, a Chinese patent with announcement number CN221158212U discloses a precisely aligned cold stamping die, comprising a base, a plurality of brackets symmetrically fixed on the upper end of the base, a support plate fixed on the upper end of the plurality of brackets, a hydraulic cylinder installed on the upper end of the support plate, a sliding sleeve respectively passed through each bracket, a lifting plate fixedly provided between the plurality of sliding sleeves, an output shaft of the hydraulic cylinder passed through the support plate and fixedly connected to the upper end of the lifting plate, a mounting seat fixedly provided at the lower end of the lifting plate, a detachable stamping upper die provided at the lower end of the mounting seat, a stamping lower die provided at the upper end of the base, a fixing mechanism provided on the stamping lower die, a plurality of positioning shafts symmetrically fixed on the lower end of the mounting seat, a plurality of positioning holes symmetrically provided on the upper end of the stamping lower die, and the plurality of positioning holes respectively cooperate with the plurality of positioning shafts, so that the above-mentioned stamping die has the advantages of precise stamping alignment and rapid replacement and installation of the die.

[0003] The above patent still has shortcomings. The mold is usually stored by combining the upper mold and the lower mold for easy reuse later. The stamping mold is usually heavy, and it is necessary to move the mold out of the stamping machine by equipment such as an overhead crane when disassembling. The stamping mold of the above patent is prone to separation and detachment of the upper mold and the lower mold when being combined and disassembled, which poses a great safety hazard. At the same time, the stamping mold can only be removed by tilting the force direction, and it is easy to hit the stamping machine during the removal process. Summary of the invention

[0004] In view of this, the first object of the present invention is to provide a high-precision cold stamping die, which can be disassembled by an overhead crane after the upper die and the lower die are combined.

[0005] The technical solution of the present invention is: a high-precision cold stamping mold, comprising an upper mold and a lower mold, the top of the upper mold is provided with a mounting block, the bottom of the lower mold is provided with a positioning hole, the side end of the lower mold is also provided with a locking groove 1, the side end of the upper mold is provided with a locking groove 2, a locking block is provided in the locking groove 1, one end of the locking block is provided with a hinge hole, and the other end is provided with a socket, a hinge rod is also provided in the locking groove 1, the hinge rod cooperates with the hinge hole, a threaded hole is opened in the locking groove 2, and a threaded column is also provided in the socket.

[0006] Through the above technical means, by setting a locking block and cooperating with the threaded column and the socket, the upper mold and the lower mold can be locked. When disassembling the upper mold and the lower mold, the disassembly can be completed in the state of closing and locking the mold, thereby preventing the upper mold and the lower mold from detaching.

[0007] Preferably, a lifting ring is further provided on the outer side of the hinged rod, and locking blocks are provided on both sides of the lower mold.

[0008] Through the above technical means, a lifting ring is arranged on the outside of the hinged rod to reduce the force required to rotate the threaded column, and at the same time it is convenient for the aerial crane to lift the upper mold and the lower mold.

[0009] The second object of the present invention is to provide a punching device, which can correct the force direction of the overhead crane when disassembling the upper die and the lower die to prevent the upper die and the lower die from colliding with the punching machine. The technical solution of the present invention is: a stamping device, comprising an upper mounting frame, a lower mounting platform and a movable mounting frame, a linear light rod is arranged between the upper mounting frame and the lower mounting platform, the movable mounting frame is slidably arranged on the linear light rod, a stamping cylinder is arranged at the upper end of the upper mounting frame, the output end of the stamping cylinder is fixed to the movable mounting frame, a stamping area and a mold changing area are arranged in the lower mounting platform, a screw motor is arranged at the side end of the lower mounting platform, a sliding plate is arranged at the output end of the screw motor, the lower mold is arranged on the sliding plate, and the screw motor drives the sliding plate to move between the stamping area and the mold changing area.

[0010] Through the above-mentioned technical means, by setting up the stamping area and the mold changing area, and setting up the screw motor and the sliding plate, when the upper mold and the lower mold need to be replaced, the upper mold, the lower mold and the upper mounting frame can be staggered by driving the sliding plate to the mold changing area through the screw motor, and the force direction can be corrected during transportation by the overhead crane, making mold changing easier.

[0011] Preferably, a mounting groove is provided on the mobile mounting frame, the mounting groove is adapted to the mounting block, a cylinder 1 is provided on the mobile mounting frame, a locking hole is also provided on the top of the upper mold, and the upper mold is locked with the mobile mounting frame when the output end of the cylinder 1 is inserted into the locking hole.

[0012] Through the above technical means, the upper mounting frame is positioned and fixed by inserting the output end of the oil cylinder 1 into the lock hole and by the cooperation between the mounting groove and the mounting block.

[0013] Preferably, a pair of rollers are fixedly provided at the bottom of the stamping plate, and the rollers abut against the upper end surface of the lower mounting platform. A pair of through grooves are provided on the upper end surface of the lower mounting platform, and a pair of oil cylinders 2 and 3 are provided on the inner side of the lower mounting platform. The output ends of the oil cylinders 2 and 3 are provided with long abutment heads, and the long abutment heads are provided in the through grooves. A horizontal slide groove 1 and a vertical slide groove are provided on the inner side of the sliding plate, and a nut seat is slidably provided in the vertical slide groove, and the output end of the screw motor passes through the horizontal slide groove 1 and cooperates with the nut seat thread.

[0014] Through the above-mentioned technical means, by setting the roller, the contact area between the sliding plate and the lower mounting platform is reduced, so that the screw motor can complete the transportation of the sliding plate without a large torque, by setting the oil cylinder 2 and the oil cylinder 3, and setting the long head in the through groove, when the sliding plate moves to the stamping area, the long head is retracted downward and the roller is suspended, thereby increasing the contact area between the sliding plate and the lower mounting platform, and preventing the roller from being deformed due to the small contact area during stamping, and by setting the vertical slide groove and making the nut seat slide and cooperate with the vertical slide groove, when the sliding plate and the roller move downward, the connection between the output screw of the screw motor and the sliding plate is guaranteed.

[0015] Preferably, a plurality of bosses are further provided at the bottom of the stamping plate, and a groove cooperating with the bosses is provided on the upper end surface of the lower mounting platform.

[0016] Through the above technical means, when the sliding plate is pressed down, the cooperation between the protrusion and the groove plays a limiting role, preventing the upper die from generating lateral force on the lower die during stamping, which causes the output screw of the screw motor to wear.

[0017] Preferably, a second transverse sliding groove is further provided on the upper end surface of the lower mounting platform, a sliding block cooperating with the second transverse sliding groove is provided at the bottom of the sliding plate, a plurality of limiting holes are provided on both side ends of the sliding block, a mounting hole is provided on the inner side end of the second transverse sliding groove, and a limiting component is provided in the mounting hole.

[0018] Through the above technical means, the sliding accuracy of the sliding plate is increased by cooperating with the second transverse sliding groove and the slider, and at the same time its movement in the Y-axis direction is limited, so that when the upper mold impacts the lower mold, the deviation in the Y-axis direction is reduced, thereby reducing the wear of the output screw of the screw motor.

[0019] Preferably, a beam plate is also provided between the two oil cylinders, a rack is fixedly provided on the beam plate and extends into the lower mounting platform, the limit assembly includes a power gear, a planetary gear set, a limit rod and a threaded sleeve, the power gear is meshed with the rack, the end of the power gear is fixed to the input end of the planetary gear set, the tail of the limit rod is fixed to the output end of the planetary gear set, and a thread is further provided on the limit rod, the limit rod is threadedly matched with the threaded sleeve, and when the rack moves downward, the end of the limit rod is pressed into the limit hole.

[0020] Through the above-mentioned technical means, through the cooperation between the rack and the power gear, when the oil cylinder 2 moves downward, it drives the power gear to rotate, and through the cooperation between the threaded sleeve and the thread of the limit rod, the limit rod is extended into the limit hole, thereby fixing the lower mounting platform and the sliding plate, limiting the displacement of the sliding plate in all directions, and making the upper and lower molds more accurate when stamping. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of embodiment 1; Figure 2 It is a structural schematic diagram of the second embodiment; Figure 3 is a cross-sectional schematic diagram of embodiment 2; Figure 4 It is a partial schematic diagram of the second embodiment; Figure 5 The structure of the sliding plate Figure 1 ; Figure 6 The structure of the sliding plate Figure 2 ; Figure 7 is a cross-sectional schematic diagram of a sliding plate; Figure 8 for Figure 7 Schematic diagram of part A.

[0022] Reference numerals: 1, upper die; 2, lower die; 3, mounting block; 4, locking slot 1; 5, locking slot 2; 6, locking block; 7, hinge hole; 8, plug hole; 9, hinge rod; 11, threaded column; 12, lifting ring; 20, upper mounting frame; 21, lower mounting platform; 22, mobile mounting frame; 24, stamping cylinder; 25, stamping area; 26, die changing area; 27, lead screw motor; 28, sliding plate; 29, mounting column; 30, mounting slot; 31, cylinder 1; 32. Lock hole; 33. Roller; 34. Through slot; 35. Cylinder 2; 36. Cylinder 3; 37. Long abutment; 38. Horizontal slide slot 1; 39. Vertical slide slot; 40. Nut seat; 41. Boss; 42. Groove; 43. Horizontal slide slot 2; 44. Slider; 45. Limit hole; 46. Mounting hole; 47. Limit assembly; 48. Beam plate; 49. Rack; 50. Power gear; 51. Planetary gear set; 52. Limit rod; 53. Threaded sleeve. DETAILED DESCRIPTION

[0023] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0024] Embodiment 1:

[0025] A high-precision cold stamping die is used for processing a compressor exhaust plate, comprising an upper die and a lower die, a mounting block is arranged on the top of the upper die, a positioning hole is arranged on the bottom of the lower die, a guide rod is also arranged on the lower die, and it cooperates with the upper die for guidance during stamping, a locking groove 1 is also arranged on the side end of the lower die, a locking groove 2 is arranged on the side end of the upper die, a locking block is arranged in the locking groove 1, a hinge hole is arranged at one end of the locking block, and a plug hole is arranged at the other end, a hinge rod is also arranged in the locking groove 1, the hinge rod cooperates with the hinge hole, a threaded hole is opened in the locking groove 2, and a threaded column is also arranged in the plug hole, the locking of the upper die and the lower die is realized by setting the locking block and by the cooperation of the threaded column and the plug hole, when disassembling the upper die and the lower die, the disassembly can be completed in the state of mold closing and locking, so as to prevent the upper die and the lower die from detaching, a lifting ring is also arranged on the outside of the hinged rod, and locking blocks are arranged on both sides of the lower die, when hoisting the die, the hook of the crane can be installed on the lifting rings on both sides to complete the hoisting, and when locking the die is required, the force required to rotate the threaded column can be reduced.

[0026] Embodiment 2:

[0027] The camming device comprises an upper mounting frame, a lower mounting platform and a movable mounting frame, wherein a stamping oil cylinder is arranged on the upper end of the upper mounting frame, and an output end of the stamping oil cylinder is fixed to the movable mounting frame, a stamping area and a mold changing area are arranged in the lower mounting platform, and a lead screw motor is arranged on the side end of the lower mounting platform, and the lead screw motor is composed of a lead screw, a servo motor and a bearing seat, which is the prior art, a sliding plate is arranged on the output end of the lead screw motor, and the lower mold is mounted on the sliding plate, and a mounting column is fixed on the sliding plate, which cooperates with a positioning hole at the bottom of the lower mold for positioning, and the lead screw motor drives the sliding plate to move between the stamping area and the mold changing area. When it is necessary to replace the upper mold and the lower mold, the sliding plate is driven by the lead screw motor to move to the mold changing area so that the upper mold, the lower mold and the upper mounting frame can be staggered, and the force direction can be corrected when transported by the overhead crane, and the mold can be lifted by directly pulling upwards, and at the same time, the mounting column is easily disengaged from the positioning hole, so that the mold changing is easier, and after the replacement is completed, the sliding plate is driven back to move the mold to the stamping area.

[0028] The movable mounting frame is provided with a mounting groove, which is adapted to the mounting block. The movable mounting frame is provided with a cylinder 1, and a locking hole is also provided on the top of the upper mold. When the output end of the cylinder 1 is inserted into the locking hole, the upper mold and the movable mounting frame are locked. After the mold is replaced and moved back, the mounting block is directly inserted into the mounting groove. After the clamping is completed, the cylinder 1 is pushed into the locking hole and locked to realize the positioning and fixation of the upper mounting frame.

[0029] A pair of rollers are fixedly arranged at the bottom of the stamping plate, and the rollers are against the upper end surface of the lower mounting platform. A pair of through grooves are provided on the upper end surface of the lower mounting platform. A pair of oil cylinders 2 and 3 are arranged on the inner side of the lower mounting platform. The output ends of oil cylinders 2 and 3 are both provided with long abutment heads, which are arranged in the through grooves. A horizontal slide groove 1 and a vertical slide groove are arranged on the inner side of the sliding plate. A nut seat is slidingly arranged in the vertical slide groove. The output end of the screw motor passes through the horizontal slide groove 1 and cooperates with the nut seat thread. By arranging the rollers, the contact area between the sliding plate and the lower mounting platform is reduced, so that the screw motor The transportation of the sliding plate can be completed without a large torque. By setting up cylinder two and cylinder three and setting the long abutment in the through groove, when the sliding plate moves to the stamping area, the long abutment is retracted downward by cylinder two and cylinder three, and the roller is suspended in the air. At this time, the sliding plate is abutted against the lower mounting platform and the contact area is increased to prevent the roller from deforming due to the small contact area during stamping. By setting up a vertical slide groove and making the nut seat slide with the vertical slide groove, when the sliding plate and the roller move downward, the nut seat remains in place to ensure the connection between the output screw of the screw motor and the sliding plate.

[0030] There are also several protrusions at the bottom of the stamping plate, and the upper end surface of the lower mounting platform is provided with grooves that cooperate with the protrusions. When the sliding plate is pressed down, the cooperation between the protrusions and the grooves plays a limiting role to prevent the upper die from generating a certain X-axis and Y-axis impact force on the lower die during stamping, which causes wear of the output screw of the screw motor.

[0031] A second transverse slide groove is also provided on the upper end surface of the lower mounting platform, a slider matched with the second transverse slide groove is provided at the bottom of the sliding plate, a plurality of limit holes are provided on both side ends of the slider, a mounting hole is provided on the inner side end of the second transverse slide groove, a limit assembly is provided in the mounting hole, a beam plate is also provided between the two oil cylinders, a rack is fixedly provided on the beam plate and extends into the lower mounting platform, the limit assembly includes a power gear, a planetary gear set, a limit rod and a threaded sleeve, the threaded sleeve is fixedly provided at the tail of the planetary gear set, the power gear is meshed with the rack, the end of the power gear is fixed to the input end of the planetary gear set, the tail of the limit rod is fixed to the output end of the planetary gear set by a keyway to ensure coaxial rotation At the same time, the limit rod can be moved, and a thread is also provided on the limit rod. The limit rod and the threaded sleeve are threadedly matched. When the limit rod needs to be inserted into the limit hole, cylinders 2 and 3 drive the rack downward to move downward, and the rack drives the power gear to rotate, and outputs the rotational force to the planetary gear set. The planetary gear set amplifies the transmission ratio and drives the limit rod to rotate. At this time, the limit rod and the threaded sleeve are threadedly matched to make the limit rod move toward the limit hole, so that the end of the limit rod is pushed into the limit hole. By extending the limit rod into the limit hole, the lower mounting platform and the sliding plate are fixed to limit the displacement of the sliding plate in all directions, so that the upper and lower dies can have higher mold closing accuracy when stamping.

[0032] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementations. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A high-precision cold stamping die, comprising an upper die (1) and a lower die (2), wherein a mounting block (3) is arranged at the top of the upper die (1), and a positioning hole is arranged at the bottom of the lower die (2), wherein: The lower mold (2) is also provided with a locking groove 1 (4) at the side end, and the upper mold (1) is provided with a locking groove 2 (5) at the side end. A locking block (6) is provided in the locking groove 1 (4). One end of the locking block (6) is provided with a hinge hole (7) and the other end is provided with a plug hole (8). A hinge rod (9) is also provided in the locking groove 1 (4). The hinge rod (9) cooperates with the hinge hole (7). A threaded hole is provided in the locking groove 2 (5), and a threaded column (11) is also provided in the plug hole (8).

2. A high-precision cold stamping die according to claim 1, characterized in that: A lifting ring (12) is also provided on the outer side of the hinge rod (9), and locking blocks (6) are provided on both sides of the lower mold (2).

3. A punching device, comprising an upper mounting frame (20), a lower mounting platform (21) and a movable mounting frame (22), wherein a linear polished rod is arranged between the upper mounting frame (20) and the lower mounting platform (21), the movable mounting frame (22) is slidably arranged on the linear polished rod, a punching oil cylinder (24) is arranged at the upper end of the upper mounting frame (20), and the output end of the punching oil cylinder (24) is fixed to the movable mounting frame (22), wherein: It comprises a high-precision cold stamping die as described in any one of claims 1 or 2, wherein a stamping area (25) and a die changing area (26) are arranged in the lower mounting platform (21), a screw motor (27) is arranged at the side end of the lower mounting platform (21), a sliding plate (28) is arranged at the output end of the screw motor (27), the lower die (2) is arranged on the sliding plate (28), and the screw motor (27) drives the sliding plate (28) to move between the stamping area (25) and the die changing area (26).

4. A punching device according to claim 3, characterized in that: The movable mounting frame (22) is provided with a mounting groove (30), the mounting groove (30) is adapted to the mounting block (3), the movable mounting frame (22) is provided with an oil cylinder (31), and the top of the upper die (1) is also provided with a locking hole (32), and when the output end of the oil cylinder (31) is inserted into the locking hole (32), the upper die (1) and the movable mounting frame (22) are locked.

5. A punching device according to claim 3, characterized in that: A pair of rollers (33) are fixedly arranged at the bottom of the stamping plate, and the rollers (33) are pressed against the upper end surface of the lower mounting platform (21). A pair of through grooves (34) are provided on the upper end surface of the lower mounting platform (21). A pair of oil cylinders (35) and a pair of oil cylinders (36) are provided on the inner side of the lower mounting platform (21). The output ends of the oil cylinders (35) and (36) are both provided with long abutment heads (37), and the long abutment heads (37) are arranged in the through grooves (34). A horizontal slide groove (38) and a vertical slide groove (39) are provided on the inner side of the sliding plate (28). A nut seat (40) is slidably arranged in the vertical slide groove (39). The output end of the screw motor (27) passes through the horizontal slide groove (38) and is threadedly matched with the nut seat (40).

6. A punching device according to claim 5, characterized in that: The bottom of the stamping plate is also provided with a plurality of convex columns (41), and the upper end surface of the lower mounting platform (21) is provided with grooves (42) that match the convex columns (41).

7. A punching device according to claim 5, characterized in that: A second transverse slide groove (43) is also provided on the upper end surface of the lower mounting platform (21); a slider (44) cooperating with the second transverse slide groove (43) is provided at the bottom of the sliding plate (28); a plurality of limit holes (45) are provided at both side ends of the slider (44); a mounting hole (46) is provided at the inner side end of the second transverse slide groove (43); a limit assembly (47) is provided in the mounting hole (46).

8. A punching device according to claim 7, characterized in that: A beam plate (48) is also provided between the two oil cylinders (35). A rack (49) is fixedly provided on the beam plate (48) and extends into the lower mounting platform (21). The limit assembly (47) comprises a power gear (50), a planetary gear set (51), a limit rod (52) and a threaded sleeve (53). The power gear (50) is meshed with the rack (49). The end of the power gear (50) is fixed to the input end of the planetary gear set (51). The tail of the limit rod (52) is fixed to the output end of the planetary gear set (51). The limit rod (52) is also provided with a thread. The limit rod (52) is threadedly matched with the threaded sleeve (53). When the rack (49) moves downward, the end of the limit rod (52) is pressed into the limit hole (45).

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