A double-angle iron end forming die set with a bridge structure

Abstract

The present invention relates to the field of stamping, and particularly to a double angle iron end forming die set with a bridge structure, which includes a lower die base and an upper die base arranged above the lower die base. A moving template is slidably installed inside the lower die base, and a shifting fixing member is arranged between the moving template and the lower die base. Two fillet punches are symmetrically arranged at the lower end of the upper die base. A bridge shaft is rotatably installed in the middle of the upper end of the moving template, and 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 moving template. The lower end of the bridge seat is attached to one of the inclined support platforms. The present invention facilitates the stamping chamfering of the opening groove on the double angle iron, simultaneously ensures that the punching force can directly and effectively act on the corner of the opening groove, improves the safety during stamping, and ensures the stamping quality.

Description

Technical Field

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

[0002] Angle iron is a long steel bar with two sides perpendicular to each other at an angle, having an L-shaped cross-section, and two edges are right angles. As an important metal product, angle iron plays an important role in fields such as construction and industry. Among them, during the processing of double angle iron, after the opening groove on the double angle iron is processed, it is necessary to perform stamping chamfering on the end of the opening groove, that is, the corner part, to make it plastically deformed to form a rounded corner.

[0003] However, when the existing stamping die is stamping, when chamfering one of the corner parts of the opening groove is completed, 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 part of the opening groove can be stamped and chamfered. Its stamping process requires repeated clamping and fixing, which is quite cumbersome, resulting in inconvenient stamping processing. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the background art, and a double angle iron end forming die set with a bridge structure is proposed.

[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, including a lower die base and an upper die base arranged above the lower die base. A movable template is slidably installed inside the lower die base, and a dialing fixing member is arranged between the movable template and the lower die base. Two rounded corner punches are symmetrically arranged at the lower end of the upper die base. 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, and 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 symmetrically extend from the upper end of the bridge seat. A limiting groove rail is arranged above the front part of the bridge seat. A moving member is arranged between the limiting groove rail and the bridge seat. A perforation is penetrated and opened at the corner of the limiting groove rail. An axial fixing ring is coaxially inlaid on the outer surface of the bridge shaft near the front edge. Two locking holes are symmetrically opened on the outer surface of the axial fixing ring. A locking bridge pin is inserted into one of the locking holes, and the locking bridge pin is elastically connected with the movable template.

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

[0007] Preferably, a locking bridge sleeve is slidably mounted on the outer surface of the locking bridge pin. A concave seat extends from the lower end of the locking bridge sleeve and is fixed to the moving template. A pin ear is coaxially inlaid on the outer surface of the locking bridge pin, and the pin ear is slidably mounted inside the locking bridge sleeve. A push spring is wound around the outside of the locking bridge pin. One end of the push spring is fixed to the pin ear, and the other end of the push spring is fixed to the inner side surface of the locking bridge sleeve.

[0008] Preferably, sliding grooves are provided at both the front and rear ends of the moving template. Slide edges extend from the front and rear ends inside the lower die base, and the slide edges are slidably mounted inside the sliding grooves. Two guide sleeves are symmetrically and fixedly mounted at both the front and rear ends of the lower die base. A guide post is slidably mounted inside the guide sleeve, and the guide post penetrates out from the upper end of the guide sleeve. The end of the guide post is fixed to the upper die base. A punching seat extends from the upper end of the fillet punch, and the end of the punching seat is fixed to the upper die base.

[0009] Preferably, the dialing and fixing member includes a square hole opened at the edge of the upper end surface of the moving template, and the square hole extends to the lower end surface of the moving template. A dialing frame is rotatably mounted inside the square hole, and the upper and lower ends of the dialing frame extend out from the inside of the square hole. The lower end of the dialing frame penetrates through the inner bottom surface of the lower die base.

[0010] Preferably, fixing caps are inlaid on both sides of the upper end of the moving template near the square hole. A connecting column is rotatably mounted between the two fixing caps. The dialing frame is inlaid in the middle of the connecting column. A torsion spring is provided between the dialing frame and the fixing cap. A dialing groove is opened at the inner bottom surface of the lower die base near the edge, and the lower end of the dialing frame fits inside the dialing groove.

[0011] Preferably, the moving member includes a threaded column rotatably mounted in the middle of the front end of the bridge base. A threaded sleeve is screwed on 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 track.

[0012] Preferably, two guide rods are symmetrically and fixedly mounted at the front end of the bridge base. The two connecting frames are respectively slidably mounted on the outer surfaces of the two guide rods. Two reinforcing columns symmetrically extend near the middle of the front end of the limiting groove track, and the connecting frames are inlaid on the outer surfaces of the reinforcing columns.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By means of the provided bridge base, when chamfering is completed at one of the corner parts of the open slot on the double angle iron, the locking bridge pin can be pulled to disengage it from the locking hole on the shaft fixing ring, allowing the bridge base to be rotated without the restriction of the locking bridge pin, thereby driving the double angle iron to rotate and change its inclination direction. 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. Subsequently, chamfering can be performed on the other corner of the open slot, and this process avoids repeatedly clamping the double angle iron, effectively facilitating the chamfering of the open slot on the double angle iron.

[0015] 2. By means of the inclined bridge base, the double angle iron can be positioned in an inclined state, enabling the corner of the open slot to be perpendicular to the movement direction of the fillet punch and the direction of the punching force. When chamfering is carried out, the punching force can directly and effectively act on the corner of the open slot.

[0016] 3. By means of the provided positioning column, it can pass through the mounting hole on the double angle iron for positioning. At this time, rotate the threaded column to drive the threaded sleeve to move downward, and then drive the limiting groove rail to move downward to be clamped around the open slot of the double angle iron, thereby firmly fixing the double angle iron to improve the safety during stamping. At the same time, under the restraint of the limiting groove rail on the edge of the double angle iron, it can prevent the area around the chamfer from deforming during stamping, effectively ensuring the stamping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural view of a double angle iron end forming die set with a bridge structure according to the present invention;

[0018] Figure 2 is a Figure 1 magnified view of A in a double angle iron end forming die set with a bridge structure according to the present invention;

[0019] Figure 3 is an internal view of the locking bridge sleeve of a double angle iron end forming die set with a bridge structure according to the present invention;

[0020] Figure 4 is an exploded view of the lower die base and the moving template of a double angle iron end forming die set with a bridge structure according to the present invention;

[0021] Figure 5 is a schematic view of the bridge base of a double angle iron end forming die set with a bridge structure according to the present invention;

[0022] Figure 6 is a schematic view of the limiting groove rail of a double angle iron end forming die set with a bridge structure according to the present invention;

[0023] Figure 7Schematic diagram of the double angle iron of a double angle iron end forming die set with a bridge structure according to the present invention;

[0024] Figure 8 Fixed view of the double angle iron of a double angle iron end forming die set with a bridge structure according to the present invention.

[0025] In the figure: 1, lower die base; 2, moving template; 3, upper die base; 4, bridge base; 5, concave seat; 6, lock bridge sleeve; 7, round 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, sliding groove; 16, dial groove; 17, fixing cap; 18, connecting column; 19, torsion spring; 20, dial frame; 21, inclined support platform; 22, limiting groove track; 23, hand wheel; 24, perforation; 25, threaded column; 26, threaded sleeve; 27, guide rod; 28, reinforcing column; 29, connecting frame; 30, V-shaped frame; 31, punching seat; 32, guide post; 33, guide sleeve; 34, square hole; 35, positioning column; 36, double angle iron. Detailed implementation manners

[0026] 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 other obvious variations can be conceived by those skilled in the art.

[0027] As Figures 1-8A double-angle iron end forming die set with a bridge structure as shown includes a lower die base 1 and an upper die base 3 arranged above the lower die base 1. A moving template 2 is slidably installed inside the lower die base 1, and a pusher is arranged between the moving template 2 and the lower die base 1. Two fillet 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 moving template 2, and the moving template 2 serves to carry the bridge shaft 8. A bridge base 4 is inlaid on the outer surface of the bridge shaft 8, and the bridge shaft 8 can make the bridge base 4 rotate, thereby driving the double-angle iron 36 to rotate and changing the inclination direction of the double-angle iron 36 to adapt to the stamping chamfering of the two corner parts of the opening groove on the double-angle iron 36. The bridge base 4 is inclined, so that the corner of the opening groove can be perpendicular to the moving direction of the fillet 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 moving template 2, and the lower end of the bridge base 4 is attached to one of the inclined support platforms 21. The inclined support platform 21 can support the bridge base 4 to improve the bearing capacity of the bridge base 4. Two positioning columns 35 symmetrically extend from the upper end of the bridge base 4, and the positioning columns 35 serve to position the double-angle iron 36. The positioning columns 35 are designed according to the size of the installation holes on the double-angle iron 36 to ensure that when the positioning columns 35 are inserted into the installation holes on the double-angle iron 36, the two can be closely fitted. A limiting groove rail 22 is arranged above the front part of the bridge base 4, and a moving part is arranged between the limiting groove rail 22 and the bridge base 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 be in full contact. A through hole 24 is penetrated and opened at the corner of the limiting groove rail 22. The limiting groove rail 22 can fix the double-angle iron 36 on the one hand and restrain the edge of the double-angle iron 36 on the other hand to prevent the area around the chamfer from deforming during stamping. An axial fixing ring 9 is coaxially inlaid on the outer surface of the bridge shaft 8 near the front edge. The through hole 24 serves for the fillet punch 7 to pass through for stamping chamfering. Two locking holes 10 are symmetrically opened on the outer surface of the axial fixing ring 9. A locking bridge pin 11 is inserted into one of the locking holes 10. The locking holes 10 and the locking bridge pin 11 serve to fix the bridge base 4, and the locking bridge pin 11 is elastically connected to the moving template 2.

[0028] V-shaped frames 30 are arranged on both the front and rear sides of the inclined support platform 21. The lower ends of the V-shaped frames 30 are fixed to the moving template 2. The V-shaped frames 30 serve to support the bridge shaft 8. The bridge shaft 8 is rotatably installed at the end of the V-shaped frame 30. A hand wheel 23 is coaxially and fixedly installed at the front end of the bridge shaft 8. The hand wheel 23 serves to facilitate the rotation of the bridge shaft 8.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] The moving part includes a threaded column 25 rotatably installed in the middle of the front end of the bridge seat 4. A threaded sleeve 26 is screwed onto 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 so as to be stuck to the edge of the double angle iron 36. Connecting frames 29 are fixedly installed on both sides of the threaded sleeve 26. The end of the connecting frame 29 is 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.

[0034] Two guide rods 27 are symmetrically and fixedly installed at the front end of the bridge seat 4. The two connecting frames 29 are respectively slidably installed on the outer surfaces of the two guide rods 27. The guide rods 27 serve as guides. Two reinforcing columns 28 symmetrically extend near the middle of the front end of the limiting groove rail 22. The connecting frame 29 is embedded in the outer surface of the reinforcing column 28. The reinforcing column 28 can strengthen the connection of the limiting groove rail 22.

[0035] During stamping, the double angle iron 36 is placed on the bridge seat 4. At this time, the positioning column 35 passes through the installation hole on the double angle iron 36 for positioning. 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 so as to be stuck around the opening groove of the double angle iron 36, thereby firmly fixing the double angle iron 36. Subsequently, the upper die base 3 moves downward driven by the stamping machine, so that one of the fillet punches 7 can pass through one of the through holes 24 on the limiting groove rail 22 to vertically stamp one of the corners of the opening groove, causing plastic deformation of the corner to form a fillet. During this process, the limiting groove rail 22 will restrain the edge of the double angle iron 36 to prevent deformation of the area around the chamfer during stamping. When one of the corners of the opening groove is stamped, the lock bridge pin 11 can be pulled to make the lock bridge pin 11 disengage 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 inclination 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 base 3 moves downward driven by the stamping machine, so that the other fillet punch 7 passes through the other through hole 24 on the limiting groove rail 22 to vertically stamp the other corner of the opening groove, causing plastic deformation of the corner to form a fillet.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended 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); 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), 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), 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 surface of the lock bridge sleeve (6); The front and rear ends of the movable template (2) are provided with a slide groove (15), the front and rear ends of the lower die base (1) are 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 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); 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).

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: 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).

4. 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).

5. The double angle iron end forming die set with a bridge structure according to claim 4, 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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