Double-angle-iron end forming die set with bridge type structure

Abstract

The invention relates to the field of stamping, in particular to a double-angle-iron end forming die set with a bridge-type structure, which comprises a lower die holder and an upper die holder arranged above the lower die holder, a movable die plate is slidably mounted in the lower die holder, and a shifting and fixing piece is arranged between the movable die plate and the lower die holder. Two fillet punches are symmetrically arranged at the lower end of the upper die base, a bridge shaft is rotationally installed in the middle of the upper end of the movable die plate, a bridge base is embedded in the outer surface of the bridge shaft and is arranged in an inclined mode, and two inclined supporting tables are symmetrically arranged at the position, close to the middle, of the upper end of the movable die plate. The lower end of the bridge seat is attached to one inclined supporting table. According to the double-angle iron punching and chamfering device, punching and chamfering can be conveniently conducted on an open groove in double-angle iron, meanwhile, it is ensured that punching force can directly and effectively act on the corner of the open groove, the safety during punching is improved, and the punching quality is ensured.

Description

Technical Field

[0001] The invention relates to the field of stamping, and in particular to a double-angle iron end forming die set with a bridge structure. Background Art

[0002] Angle iron is a long steel strip with two sides perpendicular to each other, with an L-shaped cross-section and two edges at right angles. As an important metal product, angle iron plays an important role in the fields of construction and industry. During the processing of double angle iron, after the opening groove on the double angle iron is processed, the end of the opening groove, i.e. the corner part, needs to be stamped and chamfered to make it plastically deformed to form a rounded corner.

[0003] However, when the existing stamping die is used for stamping, when one of the corners of the open slot is chamfered, it is necessary to first loosen the clamping of the double angle iron to adjust the position of the double angle iron, and then clamp and fix the double angle iron again, and then the other corner of the open slot can be stamped and chamfered. The stamping process requires repeated clamping and fixing, which is quite cumbersome, making the stamping process inconvenient. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a double angle iron end forming die set with a bridge structure.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a double-angle iron end forming die set with a bridge structure, comprising a lower die seat and an upper die seat arranged above the lower die seat, a movable template is slidably installed inside the lower die seat, a pull fixture is arranged between the movable template and the lower die seat, two rounded corner punches are symmetrically arranged at the lower end of the upper die seat, a bridge shaft is rotatably installed in the middle of the upper end of the movable template, a bridge seat is inlaid on the outer surface of the bridge shaft, the bridge seat is inclined, two inclined support platforms are symmetrically arranged near the middle of the upper end of the movable template, the lower end of the bridge seat is attached to one of the inclined support platforms, two positioning columns are symmetrically extended from the upper end of the bridge seat, a limiting groove rail is arranged above the front of the bridge seat, a moving part is arranged between the limiting groove rail and the bridge seat, a through hole is opened at the corner of the limiting groove rail, a shaft fixing ring is coaxially inlaid near the front edge of the outer surface of the bridge shaft, and two lock holes are symmetrically opened on the outer surface of the shaft fixing ring, a lock bridge pin is inserted into the interior of one of the lock holes, and the lock bridge pin is elastically connected to the movable template.

[0006] Preferably, V-shaped frames are provided at the front and rear sides of the inclined support platform, the lower end of the V-shaped frame is fixed to the movable template, the bridge shaft is rotatably mounted on the end of the V-shaped frame, and a handwheel is coaxially fixedly mounted on the front end of the bridge shaft.

[0007] Preferably, a lock bridge sleeve is slidably installed on the outer surface of the lock bridge pin, a concave seat is extended from the lower end of the lock bridge sleeve, the concave seat is fixed to the movable template, a pin ear is coaxially inlaid on the outer surface of the lock bridge pin, the pin ear is slidably installed inside the lock bridge sleeve, a push push spring is wound around the outer side of the lock bridge pin, one end of the push push spring is fixed to the pin ear, and the other end of the push push spring is fixed to the inner side of the lock bridge sleeve.

[0008] Preferably, the front and rear ends of the movable template are provided with sliding grooves, the front and rear ends of the interior of the lower die seat are extended with sliding edges, the sliding edges are slidably installed in the interior of the sliding grooves, the front and rear ends of the lower die seat are symmetrically fixed with two guide sleeves, the guide sleeves are slidably installed with guide columns, the guide columns extend from the upper ends of the guide sleeves, the ends of the guide columns are fixed to the upper die seat, the upper end of the rounded corner punch is extended with a punch seat, and the end of the punch seat is fixed to the upper die seat.

[0009] Preferably, the shifting fixture includes a square hole opened at the edge of the upper end surface of the movable template, the square hole extends to the lower end surface of the movable template, a shifting frame is rotatably installed inside the square hole, the upper and lower ends of the shifting frame extend from the inside of the square hole, and the lower end of the shifting frame passes through the inner bottom surface of the lower mold base.

[0010] Preferably, fixing caps are embedded on both sides of the upper end of the movable template near the square hole, a connecting column is rotatably installed between the two fixing caps, the shift rack is embedded in the middle of the connecting column, a torsion spring is arranged between the shift rack and the fixing cap, and a shift groove is opened near the edge of the inner bottom surface of the lower mold base, and the lower end of the shift rack fits into the inside of the shift groove.

[0011] Preferably, the movable part includes a threaded column rotatably mounted in the middle of the front end of the bridge seat, a threaded sleeve is screwed onto the outer surface of the threaded column, connecting frames are fixedly mounted on both sides of the threaded sleeve, and the ends of the connecting frames are fixed to the limiting groove rails.

[0012] Preferably, two guide rods are symmetrically fixedly installed at the front end of the bridge seat, and the two connecting frames are slidably installed on the outer surfaces of the two guide rods respectively. Two reinforcement columns extend symmetrically near the middle of the front end of the limiting groove rail, and the connecting frames are embedded in the outer surfaces of the reinforcement columns.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the provided bridge seat, when one of the corners of the open slot on the double angle iron is chamfered, the locking bridge pin can be pulled to disengage the locking bridge pin from the locking hole on the shaft fixing ring, so that the bridge seat can be rotated without the restriction of the locking bridge pin, thereby driving the double angle iron to rotate and changing the tilt direction of the double angle iron. At this time, the locking bridge pin is inserted into another locking hole on the shaft fixing ring to position and fix the rotated double angle iron, and then the other corner of the open slot can be stamped and chamfered. The process avoids repeated clamping of the double angle iron, and effectively facilitates the stamping and chamfering of the open slot on the double angle iron.

[0014] 2. By using the inclined bridge seat, the double angle iron can be positioned in an inclined shape, so that the corner of the open slot can maintain the same vertical line as the movement direction of the rounded corner punch and the direction of the punching force, so that when punching and chamfering, the punching force can directly and effectively act on the corner of the open slot.

[0015] 3. The positioning column can be passed through the mounting hole on the double angle iron for positioning. At this time, the threaded column is rotated to drive the threaded sleeve to move downward, and then the limiting groove rail is driven downward to be stuck around the opening groove of the double angle iron, so as to firmly fix the double angle iron to improve the safety during stamping. At the same time, under the constraint of the limiting groove rail on the edge of the double angle iron, deformation of the area around the chamfer during stamping can be prevented, thereby effectively ensuring the stamping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a double angle iron end forming die set with a bridge structure according to the present invention; Figure 2 The present invention is a double angle iron end forming die set with a bridge structure Figure 1 A magnified view of middle; Figure 3 It is an internal view of a lock bridge sleeve of a double angle iron end forming die set with a bridge structure of the present invention; Figure 4 An exploded view of a lower die base and a movable die plate of a double angle iron end forming die set with a bridge structure of the present invention; Figure 5 It is a schematic diagram of the bridge seat of a double angle iron end forming die set with a bridge structure according to the present invention; Figure 6 It is a schematic diagram of a limiting groove rail of a double angle iron end forming die set with a bridge structure of the present invention; Figure 7 A schematic diagram of a double angle iron of a double angle iron end forming die set with a bridge structure according to the present invention; Figure 8 The present invention is a fixed view of a double angle iron of a double angle iron end forming die set with a bridge structure.

[0017] In the figure: 1. lower die seat; 2. movable template; 3. upper die seat; 4. bridge seat; 5. concave seat; 6. lock bridge sleeve; 7. rounded corner punch; 8. bridge shaft; 9. shaft fixing ring; 10. lock hole; 11. lock bridge pin; 12. push pin spring; 13. pin ear; 14. sliding edge; 15. slide groove; 16. pull groove; 17. fixing cap; 18. connecting column; 19. torsion spring; 20. pull rack; 21. inclined support platform; 22. limiting groove rail; 23. hand wheel; 24. perforation; 25. threaded column; 26. threaded sleeve; 27. guide rod; 28. reinforcement column; 29. ​​connecting frame; 30. V-shaped frame; 31. punch seat; 32. guide column; 33. guide sleeve; 34. square hole; 35. positioning column; 36. double angle iron. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] like Figure 1-Figure 8The double angle iron end forming die set with a bridge structure shown in the figure comprises a lower die base 1 and an upper die base 3 arranged above the lower die base 1, a movable template 2 is slidably installed inside the lower die base 1, a shifting fixture is arranged between the movable template 2 and the lower die base 1, two rounded corner punches 7 are symmetrically arranged at the lower end of the upper die base 3, a bridge shaft 8 is rotatably installed at the middle part of the upper end of the movable template 2, and the movable template 2 plays a role in bearing the bridge shaft 8, and the outer surface of the bridge shaft 8 is inlaid with a bridge seat 4, and the bridge shaft 8 can make the bridge seat 4 rotate, thereby driving the double angle iron 36 to rotate, so that the double angle The iron 36 changes its tilting direction to adapt to the stamping chamfers of the two corners of the open slot on the double angle iron 36. The bridge seat 4 is tilted so that the corners of the open slot can maintain the same vertical line as the movement direction of the rounded punch 7 and the direction of the punching force. Two inclined support platforms 21 are symmetrically arranged near the middle of the upper end of the movable template 2. The lower end of the bridge seat 4 is attached to one of the inclined support platforms 21. The inclined support platform 21 can support the bridge seat 4 to improve the bearing capacity of the bridge seat 4. Two positioning columns 35 are symmetrically extended from the upper end of the bridge seat 4. The positioning columns 35 play a role in the double The angle iron 36 performs the positioning function. The positioning column 35 is designed according to the size of the mounting hole on the double angle iron 36 to ensure that when the positioning column 35 is inserted into the mounting hole on the double angle iron 36, the two can fit tightly. A limiting groove rail 22 is provided on the front upper part of the bridge seat 4. A moving part is provided between the limiting groove rail 22 and the bridge seat 4. The limiting groove rail 22 is designed according to the edge track of the opening groove on the double angle iron 36, so that when the limiting groove rail 22 is stuck on the double angle iron 36, the two can fully contact. A perforation 24 is opened through the corner of the limiting groove rail 22. On the one hand, 22 can fix the double angle iron 36, and on the other hand, it can restrain the edge of the double angle iron 36 to prevent deformation of the area around the chamfer during stamping. The outer surface of the bridge shaft 8 is coaxially inlaid with a shaft fixing ring 9 near the front edge. The through hole 24 serves to allow the rounded corner punch 7 to pass through for stamping and chamfering. The outer surface of the shaft fixing ring 9 is symmetrically provided with two locking holes 10, and a locking bridge pin 11 is inserted into the interior of one of the locking holes 10. The locking hole 10 and the locking bridge pin 11 serve to fix the bridge seat 4, and the locking bridge pin 11 is elastically connected to the movable template 2.

[0020] V-shaped frames 30 are provided on the front and rear sides of the inclined support platform 21. The lower end of the V-shaped frame 30 is fixed to the movable template 2. The V-shaped frame 30 supports the bridge shaft 8. The bridge shaft 8 is rotatably installed on the end of the V-shaped frame 30. A handwheel 23 is coaxially fixedly installed on the front end of the bridge shaft 8. The handwheel 23 facilitates the rotation of the bridge shaft 8.

[0021] A lock bridge sleeve 6 is slidably installed on the outer surface of the lock bridge pin 11, and the lock bridge sleeve 6 plays a role in bearing the lock bridge pin 11. A concave seat 5 is extended from the lower end of the lock bridge sleeve 6, and the concave seat 5 plays a role in supporting and fixing the lock bridge sleeve 6. The concave seat 5 is fixed to the movable template 2. A pin ear 13 is coaxially inlaid on the outer surface of the lock bridge pin 11, and the pin ear 13 plays a role in being pushed by the push spring 12. The pin ear 13 is slidably installed inside the lock bridge sleeve 6, and a push spring 12 is wound around the outer side of the lock bridge pin 11. One end of the push spring 12 is fixed to the pin ear 13. The push spring 12 can push the lock bridge pin 11 out so that the lock bridge pin 11 is inserted into the lock hole 10, and the other end of the push spring 12 is fixed to the inner side of the lock bridge sleeve 6.

[0022] The front and rear ends of the movable template 2 are both provided with sliding grooves 15, and the front and rear ends of the lower die base 1 are extended with sliding edges 14. The cooperation of the sliding grooves 15 and the sliding edges 14 guides the movable template 2. The sliding edges 14 are slidably installed inside the sliding grooves 15. The front and rear ends of the lower die base 1 are symmetrically fixed with two guide sleeves 33. The guide sleeves 33 are slidably installed inside with guide posts 32. The guide posts 32 extend from the upper ends of the guide sleeves 33. The ends of the guide posts 32 are fixed to the upper die base 3. The guide sleeves 33 and the guide posts 32 guide the upper die base 3. A punch seat 31 extends from the upper end of the rounded corner punch 7. The end of the punch seat 31 is fixed to the upper die base 3, and the punch seat 31 supports the rounded corner punch 7.

[0023] The shifting fixture includes a square hole 34 opened at the edge of the upper end surface of the movable template 2, and the square hole 34 extends to the lower end surface of the movable template 2. A shifting frame 20 is rotatably installed inside the square hole 34, and the square hole 34 serves to allow the shifting frame 20 to pass through. The upper and lower ends of the shifting frame 20 extend from the inside of the square hole 34, and the lower end of the shifting frame 20 passes through the inner bottom surface of the lower mold base 1. The shifting frame 20 serves to fix the movable template 2.

[0024] The upper end of the movable template 2 is inlaid with fixing caps 17 on both sides near the square hole 34, and a connecting column 18 is rotatably installed between the two fixing caps 17. The fixing cap 17 plays a role in supporting the connecting column 18. The shifting frame 20 is inlaid in the middle of the connecting column 18, and the connecting column 18 plays a role in supporting the shifting frame 20. A torsion spring 19 is arranged between the shifting frame 20 and the fixing cap 17. The torsion spring 19 can reset the shifting frame 20, so that the shifting frame 20 remains in a vertical state and is engaged in the shifting groove 16. The inner bottom surface of the lower die base 1 is provided with a shifting groove 16 near the edge, and the lower end of the shifting frame 20 is fitted into the inside of the shifting groove 16. The shifting groove 16 plays a role in cooperating with the shifting frame 20. By shifting the shifting frame 20, the shifting frame 20 can be disengaged from the shifting groove 16, and then the movable template 2 can be pushed to slide and move sideways in the lower die base 1, thereby driving the bridge seat 4 and other components to move sideways, so as to be disengaged from the lower die base 1 and the upper die base 3 for loading and unloading, so as to improve safety.

[0025] The moving part includes a threaded column 25 rotatably installed in the middle of the front end of the bridge seat 4, and a threaded sleeve 26 is screwed on the outer surface of the threaded column 25. The threaded column 25 can drive the threaded sleeve 26 to move, and then drive the limiting groove rail 22 to move to be stuck on the edge of the double angle iron 36. Connecting frames 29 are fixedly installed on both sides of the threaded sleeve 26, and the ends of the connecting frame 29 are fixed to the limiting groove rail 22. The connecting frame 29 serves to fix the threaded sleeve 26 and the limiting groove rail 22 together.

[0026] Two guide rods 27 are symmetrically fixedly installed at the front end of the bridge seat 4, and two connecting frames 29 are slidably installed on the outer surfaces of the two guide rods 27 respectively. The guide rods 27 play a guiding role. Two reinforcement columns 28 extend symmetrically near the middle of the front end of the limiting groove rail 22. The connecting frames 29 are embedded in the outer surfaces of the reinforcement columns 28. The reinforcement columns 28 can strengthen the connection with the limiting groove rail 22.

[0027] During stamping, the double angle iron 36 is placed on the bridge seat 4. At this time, the positioning column 35 passes through the mounting hole on the double angle iron 36 for positioning, and then the threaded column 25 is rotated to drive the threaded sleeve 26 to move downward, and then drive the limiting groove rail 22 to move downward to be stuck around the opening groove of the double angle iron 36, so as to firmly fix the double angle iron 36. Subsequently, the upper die seat 3 moves downward under the drive of the punching machine, so that one of the rounded corner punches 7 can pass through one of the through holes 24 on the limiting groove rail 22, so as to vertically stamp one of the corners of the opening groove, so that the corner is plastically deformed to form a rounded corner. In this process, the limiting groove rail 22 will restrain the edge of the double angle iron 36 to prevent the chamfering during stamping. The surrounding area is deformed. After one of the corners of the open slot is stamped, the lock bridge pin 11 can be pulled to disengage the lock bridge pin 11 from the lock hole 10 on the shaft fixing ring 9, so that the bridge seat 4 can be rotated without the restriction of the lock bridge pin 11, thereby driving the double angle iron 36 to rotate and changing the tilt direction of the double angle iron 36. At this time, the lock bridge pin 11 is inserted into another lock hole 10 on the shaft fixing ring 9 to position and fix the rotated double angle iron 36. Subsequently, the upper die seat 3 moves downward under the drive of the punching machine, so that another rounded corner punch 7 passes through another through hole 24 on the limiting groove rail 22, so as to vertically stamp the other corner of the open slot, so that the corner is plastically deformed to form a rounded corner.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A double angle iron end forming die set with a bridge structure, comprising a lower die base (1) and an upper die base (3) arranged above the lower die base (1), characterized in that: A movable template (2) is slidably installed inside the lower die base (1), a push-pin is arranged between the movable template (2) and the lower die base (1), two rounded punches (7) are symmetrically arranged at the lower end of the upper die base (3), a bridge shaft (8) is rotatably installed in the middle of the upper end of the movable template (2), a bridge seat (4) is inlaid on the outer surface of the bridge shaft (8), and the bridge seat (4) is arranged in an inclined manner, and two inclined support platforms (21) are symmetrically arranged near the middle of the upper end of the movable template (2), and the lower end of the bridge seat (4) is attached to one of the inclined support platforms (21), and the bridge seat (4) is arranged in an inclined manner. ) are symmetrically extended from the upper end thereof, a limiting groove rail (22) is arranged above the front of the bridge seat (4), a moving part is arranged between the limiting groove rail (22) and the bridge seat (4), a through hole (24) is penetrated at the corner of the limiting groove rail (22), a shaft fixing ring (9) is coaxially inlaid on the outer surface of the bridge shaft (8) near the front edge, and two locking holes (10) are symmetrically arranged on the outer surface of the shaft fixing ring (9), a locking bridge pin (11) is inserted into the interior of one of the locking holes (10), and the locking bridge pin (11) is elastically connected to the movable template (2).

2. The double angle iron end forming die set with a bridge structure according to claim 1, characterized in that: V-shaped frames (30) are provided at the front and rear of the inclined support platform (21), the lower end of the V-shaped frame (30) is fixed to the movable template (2), the bridge shaft (8) is rotatably mounted on the end of the V-shaped frame (30), and a hand wheel (23) is coaxially fixedly mounted on the front end of the bridge shaft (8).

3. The double angle iron end forming die set with a bridge structure according to claim 1, characterized in that: A lock bridge sleeve (6) is slidably mounted on the outer surface of the lock bridge pin (11), a concave seat (5) is extended from the lower end of the lock bridge sleeve (6), and the concave seat (5) is fixed to the movable template (2). A pin ear (13) is coaxially inlaid on the outer surface of the lock bridge pin (11), and the pin ear (13) is slidably mounted inside the lock bridge sleeve (6). A push-pull spring (12) is wound around the outer side of the lock bridge pin (11), one end of the push-pull spring (12) is fixed to the pin ear (13), and the other end of the push-pull spring (12) is fixed to the inner side of the lock bridge sleeve (6).

4. The double angle iron end forming die set with a bridge structure according to claim 1, characterized in that: The front and rear ends of the movable template (2) are both provided with a slide groove (15), the front and rear ends of the lower die base (1) are both extended with a slide edge (14), the slide edge (14) is slidably installed inside the slide groove (15), the front and rear ends of the lower die base (1) are both symmetrically fixed with two guide sleeves (33), the guide sleeve (33) is slidably installed inside with a guide column (32), the guide column (32) extends from the upper end of the guide sleeve (33), the end of the guide column (32) is fixed to the upper die base (3), the upper end of the rounded corner punch (7) is extended with a punch seat (31), the end of the punch seat (31) is fixed to the upper die base (3).

5. The double angle iron end forming die set with a bridge structure according to claim 1, characterized in that: The shifting fixture comprises a square hole (34) formed at the edge of the upper end surface of the movable template (2), the square hole (34) extending to the lower end surface of the movable template (2), a shifting frame (20) rotatably mounted inside the square hole (34), the upper and lower ends of the shifting frame (20) extending from the inside of the square hole (34), and the lower end of the shifting frame (20) penetrating the inner bottom surface of the lower mold base (1).

6. The double angle iron end forming die set with a bridge structure according to claim 5, characterized in that: The upper end of the movable template (2) is inlaid with fixing caps (17) on both sides near the square hole (34), a connecting column (18) is rotatably installed between the two fixing caps (17), the shifting frame (20) is inlaid in the middle of the connecting column (18), a torsion spring (19) is arranged between the shifting frame (20) and the fixing caps (17), and a shifting groove (16) is opened near the edge of the inner bottom surface of the lower mold base (1), and the lower end of the shifting frame (20) is fitted into the inside of the shifting groove (16).

7. The double angle iron end forming die set with a bridge structure according to claim 1, characterized in that: The moving part comprises a threaded column (25) rotatably mounted on the middle part of the front end of the bridge seat (4), a threaded sleeve (26) being screwed onto the outer surface of the threaded column (25), connecting frames (29) being fixedly mounted on both sides of the threaded sleeve (26), and ends of the connecting frames (29) being fixed to the limiting groove rail (22).

8. The double angle iron end forming die set with a bridge structure according to claim 7, characterized in that: Two guide rods (27) are symmetrically fixedly mounted at the front end of the bridge seat (4), and the two connecting frames (29) are slidably mounted on the outer surfaces of the two guide rods (27) respectively. Two reinforcing columns (28) are symmetrically extended near the middle of the front end of the limiting groove rail (22), and the connecting frames (29) are embedded in the outer surfaces of the reinforcing columns (28).

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