CN220049710U - Efficient hinge accessory stamping die - Google Patents

Abstract

The utility model relates to a high-efficiency hinge accessory stamping die, which relates to the field of hinge production and manufacturing, and is suitable for stamping a sheet-shaped material belt out of a hinge accessory. According to the utility model, single punching is changed into continuous punching, and the processing and forming of the hinge fittings can be realized by only one set of die, so that the production efficiency of the hinge fittings is improved, meanwhile, the number of occupied punching machines and workers in the processing and manufacturing process of the hinge fittings is reduced, and the manual output cost is further reduced.

Description

Efficient hinge accessory stamping die

Technical Field

The utility model relates to the field of hinge production and manufacturing, in particular to a high-efficiency hinge accessory stamping die.

Background

With the development of die technology and materials, more and more parts are produced by stamping dies, and some plate-shaped parts are usually obtained by a cold stamping method, wherein the stamping dies are special technological equipment for processing materials into parts in cold stamping; stamping is a process in which a material is subjected to separation or plastic deformation at room temperature using a die mounted on a press, thereby obtaining a desired part.

At present, a hinge fitting is designed, referring to fig. 1, the hinge fitting comprises two connecting plates 15 and a bending plate 16, the two connecting plates 15 are opposite and are arranged in parallel, the two connecting plates 15 are connected through the bending plate 16, a mounting hole 17 and two connecting holes 18 are formed in the two connecting plates 15, and an integral molding is formed between the two connecting plates 15 and the bending plate 16.

In the prior art, the production and manufacture of such hinge accessories usually adopts a single-punch die, namely a die of one process, and after each process is completed, the hinge accessories are collected manually so as to be capable of performing the next process. In the production process of the hinge fitting, a trimming die is needed to be used firstly to manufacture the plate into a proper specification, then a punching die is used to punch the connecting hole, and after the punching process is finished, a bending die is needed to bend the plate, so that the production and the manufacture of the hinge fitting are finished.

Such an approach results in lower production efficiency of the hinge assembly; and, when each mould equipment is used, special people need to stare at the same time to ensure the quality of mould processing, and simultaneously collect the workpiece after single punching is finished, so that the single punching is applied to the next working procedure, and therefore, the number of punches and workers occupied by the mode is large, and the manual output cost is high.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an efficient stamping die for hinge accessories.

The utility model provides a high-efficiency hinge accessory stamping die which adopts the following technical scheme:

the efficient hinge accessory stamping die is suitable for stamping a sheet material belt into a hinge accessory and comprises an upper die holder and a lower die holder, wherein the upper die holder and the lower die holder are aligned relatively and do opening and closing movements with each other, an upper punching part, an upper primary forming part and an upper bending part are sequentially arranged on the lower surface of the upper die holder along the advancing direction of the sheet material belt, and a lower punching part, a lower primary forming part and a lower bending part are sequentially arranged on the upper surface of the lower die holder along the advancing direction of the sheet material belt; the upper punching piece and the lower punching piece are matched together to punch the sheet material belt; the upper primary forming piece and the lower primary forming piece are matched together to cut off the punched sheet material belt to form a hinge fitting blank, and meanwhile, the hinge fitting blank is subjected to preliminary bending; the upper bending piece and the lower bending piece are matched together to be used for carrying out secondary bending on the hinge fitting blank after preliminary bending.

By adopting the technical scheme, when a workpiece is required to be molded, an operator installs an upper die holder and a lower die holder in the existing punching machine, the upper die holder is positioned above, the lower die holder is positioned below, then a sheet material belt is placed on the lower die holder, the sheet material belt advances along the directions of a lower punching piece, a lower preliminary molding piece and a lower bending piece, and simultaneously the upper punching piece, the upper preliminary molding piece and the upper bending piece punch the sheet material belt; the upper punching piece and the lower punching piece are matched together to punch the sheet material belt, so that the forming of the mounting hole and the connecting hole is completed; the punched sheet material belt continuously moves, the sheet material belt is cut off by the cooperation of the upper primary forming piece and the lower primary forming piece to form a hinge fitting blank, and the hinge fitting blank is subjected to primary bending; the blank of the hinge fitting continuously moves towards the lower bending piece, and the upper bending piece and the lower bending piece are matched together to complete bending and forming of the material section, so that the processing and manufacturing of the hinge fitting are completed; through the arrangement, the processing and forming of the hinge fittings can be realized by only one set of die, single punching is changed into continuous punching, the production efficiency of the hinge fittings is improved, meanwhile, the number of occupied punches and workers in the processing and manufacturing process of the hinge fittings is reduced, and the manual output cost is further reduced.

Optionally, the upper punching piece comprises a punching pressing plate arranged on the upper die holder, and a punching pressing head is arranged on the punching pressing plate; the lower punching part comprises a punching table arranged on the lower die holder, the punching table and the punching press plate are arranged opposite to each other, punching holes are formed in the punching table, and the punching press head can be inserted into the punching holes.

Through adopting above-mentioned technical scheme, place the slice material area on the platform of punching a hole, the clamp plate that punches a hole is located slice material area top this moment, upper die base and die holder compound die, upper die base drive the clamp plate that punches a hole and punch a hole the pressure head and remove to the direction of the platform that punches a hole, until the pressure head that punches a hole is pegged graft in punching a hole to accomplish the processing of punching a hole to slice material area, the waste material that the pressure head that punches a hole punched simultaneously drops from punching a hole.

Optionally, the punching press head includes a connection hole press head and a mounting Kong Yatou, and the connection hole press head and the mounting Kong Yatou are both disposed on the punching press plate; the punching comprises a connecting hole punching and a mounting hole punching, and the connecting hole punching and the mounting hole punching are both arranged on the punching platform; the connection Kong Yatou can be plugged into the connection hole punch and the mounting Kong Yatou can be plugged into the mounting hole punch.

Through adopting above-mentioned technical scheme, when upper die base and die holder compound die, the upper die base drives the clamp plate that punches a hole and removes, and the clamp plate that punches a hole drives connecting hole pressure head and mounting hole pressure head and removes together, until the connecting hole pressure head peg graft in the connecting hole punches a hole, the mounting hole pressure head peg graft in the mounting hole punches a hole, can accomplish the shaping processing of mounting hole and connecting hole through single punching from this, further improves the efficiency of processing of punching a hole.

Optionally, two rows of guide rods are arranged on the punching platform, the two rows of guide rods are respectively positioned on one side of the sheet material belt, and the two rows of guide rods are used for guiding the advancing direction of the sheet material belt.

Through adopting above-mentioned technical scheme, play the guide effect through the guide bar to the slice material area of punching a hole in-process, prevent that slice material area from taking place to remove when carrying out punching a hole to lead to the mounting hole after the shaping to appear deviating with the connecting hole, thereby improve the precision of punching a hole.

Optionally, the upper primary molding piece comprises a molding plate arranged on the upper die holder, and a trimming press head and a primary bending press head are arranged on the molding plate; the lower preliminary molding piece comprises a molding table arranged on the lower die holder, a trimming hole is formed in the molding table, and a trimming pressure head can be inserted into the trimming hole; the forming table is provided with a primary bending groove, and the primary bending head can be inserted into the primary bending groove.

Through adopting above-mentioned technical scheme, slice material area is after punching a hole the processing, remove to the shaping bench, when upper die base and die holder compound die, the upper die base drives the shaping board and removes, the shaping board drives cutting edge pressure head and just bends the pressure head and remove, until cutting edge pressure head peg graft in to cutting the limit hole, just bend the pressure head in just bending the groove this moment, drop in the waste material blanking limit hole that cutting edge pressure head dashed out simultaneously, the specification size of single work piece is made to the material section after cutting edge and just bending, through falling into the region in just bending the groove for bending plate processing region, bending plate processing region both sides are connecting plate processing region, form the secondary bending from this and wait to process the region, be convenient for carry out the secondary bending with the work piece.

Optionally, the upper bending piece comprises a bending pressing plate arranged on the upper die holder, and a bending pressing head is arranged on the bending pressing plate; the lower bending piece comprises a bending table arranged on the lower die holder, bending grooves are formed in the bending table, positioning tables are arranged on two sides of each bending groove, and are used for supporting a hinge fitting blank to be bent, and the middle of the hinge fitting blank corresponds to the bending grooves.

Through adopting above-mentioned technical scheme, the hinge accessory blank after the preliminary bending treatment moves to the bending platform, and the hinge accessory blank needs the region of buckling this moment, and the bending plate processing region is located the bending groove top, and bending plate processing region both sides are connecting plate processing region, and two connecting plate processing regions are located two locating bench respectively, and upper die base and die holder compound die this moment, and the upper die base drives the clamp plate of buckling and removes, and the clamp plate of buckling removes to the bending when in the bending groove to carry out the bending treatment to the work piece to accomplish the last process of hinge accessory machine-shaping.

Optionally, a positioning groove is formed in the positioning table, and the end part of the hinge fitting blank can be inserted into the positioning groove.

Through adopting above-mentioned technical scheme, when the hinge accessory blank carries out the processing of buckling, the hinge accessory blank tip of waiting to buckle is pegged graft in the constant head tank, improves the precision in the processing of buckling from this, prevents that the hinge accessory blank from taking place to remove when the processing of buckling, and then leads to the production of deviation.

Optionally, a positioning rod is arranged on the lower die holder, a positioning cylinder is arranged on the upper die holder, and the positioning rod is positioned in the positioning cylinder and is coaxially and slidably connected with the positioning cylinder.

Through adopting above-mentioned technical scheme, upper die base and die holder separation and die closing in-process, the locating lever is located the locating cylinder all the time, improves the precision when the compound die from this, guarantees to go up punching part and punching part accurate cooperation down, go up the preformed piece and lower preformed piece accurate cooperation and go up bending part and lower bending part accurate cooperation, avoids because the deviation appears when the compound die and leads to the work piece after the machine-shaping to produce the deviation.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. when a workpiece needs to be molded, an operator installs an upper die holder and a lower die holder in an existing punching machine, the upper die holder is positioned above, the lower die holder is positioned below, a sheet material belt is placed on the lower die holder, the sheet material belt advances along the directions of a lower punching piece, a lower preliminary molding piece and a lower bending piece, and meanwhile, the upper punching piece, the upper preliminary molding piece and the upper bending piece punch the sheet material belt; the upper punching piece and the lower punching piece are matched together to punch the sheet material belt, so that the forming of the mounting hole and the connecting hole is completed; continuously moving the punched sheet material belt, and performing preliminary bending while cutting the sheet material belt by the cooperation of the upper primary forming part and the lower primary forming part, so as to manufacture the sheet material belt into a hinge fitting blank; the sheet material belt moves continuously towards the lower bending piece finally, and the upper bending piece and the lower bending piece are matched together to complete bending and forming of a hinge fitting blank, so that processing and manufacturing of the hinge fitting are completed; through the arrangement, the processing and forming of the hinge fittings can be realized by only one set of die, the single punch is changed into the continuous punch, the production efficiency of the hinge fittings is improved, meanwhile, the number of occupied punches and workers in the processing and manufacturing process of the hinge fittings is reduced, and the manual output cost is further reduced;

2. in the separation of the upper die base and the lower die base and the die assembly process, the positioning rod is always positioned in the positioning cylinder, so that the accuracy in die assembly is improved, the accurate matching of the upper punching part and the lower punching part, the accurate matching of the upper primary forming part and the lower primary forming part and the accurate matching of the upper bending part and the lower bending part are ensured, and the deviation of a workpiece after machining forming caused by the deviation in die assembly is avoided.

Drawings

FIG. 1 is a schematic view of a hinge assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a high efficiency hinge assembly stamping die in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic view of a lower die holder according to an embodiment of the present utility model;

FIG. 4 is a schematic view of the lower die holder of FIG. 2 with the web being on the lower die holder;

FIG. 5 is a schematic view of the upper die holder of FIG. 2;

FIG. 6 is a schematic view of FIG. 5 at another angle, primarily for illustrating the configuration of the primary bending head and the trimming head;

fig. 7 is a schematic view of the portion a in fig. 4.

Reference numerals illustrate: 1. an upper die holder; 2. a lower die holder; 3. an upper punching part; 31. punching a pressing plate; 32. punching a press head; 321. a connection Kong Yatou; 322. mounting Kong Yatou; 4. a primary molding piece is arranged on the upper part; 41. forming a plate; 42. cutting edge pressure heads; 43. a primary bending press head; 5. an upper bending piece; 51. bending the pressing plate; 52. bending press heads; 6. a lower punch; 61. a punching table; 62. punching; 621. punching a connecting hole; 622. punching a mounting hole; 63. a guide rod; 7. a lower preform; 71. a forming table; 72. cutting edge holes; 73. a primary bending groove; 8. a lower bending piece; 81. a bending table; 82. a bending groove; 83. a positioning table; 84. a positioning groove; 9. a positioning rod; 10. a positioning cylinder; 11. a cylinder; 12. a push plate; 13. a push rod; 14. a sheet-like material strip; 15. a connecting plate; 16. a bending plate; 17. a mounting hole; 18. and a connection hole.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-7.

Referring to fig. 1, a conventional hinge fitting (hereinafter referred to as a workpiece for short) includes two connecting plates 15 and a bending plate 16, the two connecting plates 15 are opposite and parallel, the two connecting plates 15 are connected by the bending plate 16, a mounting hole 17 and two connecting holes 18 are formed in the two connecting plates 15, and an integral molding is formed between the two connecting plates 15 and the bending plate 16.

The embodiment of the utility model discloses a high-efficiency stamping die for a hinge accessory, which is suitable for stamping a sheet material belt 14 into the hinge accessory. Referring to fig. 2 and 3, the efficient hinge accessory stamping die comprises an upper die holder 1 and a lower die holder 2, wherein the upper die holder 1 and the lower die holder 2 are aligned relatively and perform opening and closing movements with each other, an upper punching part 3, an upper primary forming part 4 and an upper bending part 5 are sequentially arranged on the lower surface of the upper die holder 1 along the advancing direction of a sheet material belt 14, and a lower punching part 6, a lower primary forming part 7 and a lower bending part 8 are sequentially arranged on the upper surface of the lower die holder 2 along the advancing direction of the sheet material belt 14; referring to fig. 2 and 4, the sheet material 14 travels in the directions of the upper punch 3, the upper preform 4, and the upper bending member 5 while the lower punch 6, the lower preform 7, and the lower bending member 8 punch the sheet material 14; the sheet material belt 14 is punched by the cooperation of the upper punching piece 3 and the lower punching piece 6, so that the forming of the mounting holes 17 and the connecting holes 18 is completed; the punched material section continues to move, the sheet material belt 14 after the punching treatment is cut off by the cooperation of the upper primary forming piece 4 and the lower primary forming piece 7 to form a hinge fitting blank, and the hinge fitting blank is subjected to preliminary bending; and finally, the material section continuously moves towards the lower bending piece 8, and the upper bending piece 5 and the lower bending piece 8 are matched together to carry out secondary bending on the hinge fitting blank after preliminary bending, so that the processing and the manufacturing of the hinge fitting are completed.

Referring to fig. 2, a positioning rod 9 is arranged on the lower die holder 2, a positioning cylinder 10 is arranged on the upper die holder 1, and the positioning rod 9 is positioned in the positioning cylinder 10 and is coaxially and slidably connected with the positioning cylinder 10; in the die splitting and die closing processes of the upper die holder 1 and the lower die holder 2, the positioning rod 9 is always positioned in the positioning cylinder 10, so that the accuracy in die closing is improved, the accurate matching of the upper punching part 3 and the lower punching part 6, the accurate matching of the upper primary forming part 4 and the lower primary forming part 7 and the accurate matching of the upper bending part 5 and the lower bending part 8 are ensured, and the deviation of a workpiece after machining forming caused by deviation in die closing is avoided.

Referring to fig. 5 and 6, the upper punch 3 includes a punch press plate 31 provided on the upper die holder 1, on which a connection Kong Yatou 321 and a mounting Kong Yatou 322 are provided; referring to fig. 3 and 4, the lower punch 6 includes a punch table 61 provided on the lower die holder 2, the punch table 61 being provided opposite to the punch press plate 31; two rows of guide rods 63 are fixedly arranged on the punching table 61, and the two rows of guide rods 63 are respectively positioned on one side of the sheet material belt 14; the punching platform 61 is provided with a connecting hole punching 621 and a mounting hole punching 622, the connecting hole pressing head 321 can be inserted into the connecting hole punching 621, and the mounting hole pressing head 322 can be inserted into the mounting hole punching 622; placing the sheet material belt 14 on the punching table 61, wherein the punching press plate 31 is positioned above the sheet material belt 14, the upper die holder 1 and the lower die holder 2 are clamped, the upper die holder 1 drives the punching press plate 31 to move, the punching press plate 31 drives the connection Kong Yatou 321 and the installation Kong Yatou 322 to move together until the connection Kong Yatou 321 is inserted into the connection hole punching 621, the installation Kong Yatou 322 is inserted into the installation hole punching 622, and the waste falls from the connection hole punching 621 and the installation hole punching 622, so that the forming treatment of the installation hole 17 and the connection hole 18 can be completed through the single punching 62; the guide rod 63 plays a role in guiding the sheet material strip 14 during punching, preventing the sheet material strip 14 from moving during punching, so that deviation occurs between the mounting hole 17 and the connecting hole 18 after forming, and the accuracy of punching is improved.

Referring to fig. 5 and 6, the upper preform 4 includes a forming plate 41 provided on the upper die holder 1, the forming plate 41 being provided with a trimming press head 42 and a preliminary bending press head 43; referring to fig. 3 and 4, the lower molding member 7 includes a molding table 71 disposed on the lower die holder 2, a trimming hole 72 is formed on the molding table 71, and the trimming press head 42 can be inserted into the trimming hole 72; the forming table 71 is provided with a primary bending groove 73, and the primary bending press head 43 can be inserted into the primary bending groove 73; after punching, the sheet material belt 14 moves onto the forming table 71, when the upper die holder 1 and the lower die holder 2 are clamped, the upper die holder 1 drives the forming plate 41 to move, the forming plate 41 drives the trimming press head 42 and the primary bending press head 43 to move until the trimming press head 42 is inserted into the trimming hole 72, at the moment, the primary bending press head 43 is positioned in the primary bending groove 73, meanwhile, the waste punched by the trimming press head 42 falls into the trimming hole 72, the sheet material section 14 after trimming and primary bending is manufactured into a hinge fitting blank, the area falling into the primary bending groove 73 is the processing area of the bending plate 16, and the two sides of the processing area of the bending plate 16 are the processing area of the connecting plate 15, so that a secondary bending to-be-processed area is formed, and the hinge fitting blank is convenient to carry out secondary bending.

Referring to fig. 5 and 6, the upper bending member 5 includes a bending press plate 51 disposed on the upper die holder 1, and a bending press head 52 is disposed on the bending press plate 51; referring to fig. 3 and 4, the lower bending member 8 includes a bending table 81 disposed on the lower die holder 2, bending grooves 82 are formed on the bending table 81, positioning tables 83 are disposed at two sides of the bending groove 82, referring to fig. 7, positioning grooves 84 are formed on the positioning tables 83, the two positioning tables 83 are used for supporting a blank of a hinge fitting to be bent, the middle part of the blank of the hinge fitting corresponds to the bending groove 82, the blank of the hinge fitting after initial bending is moved onto the bending table 81, at this time, a bending area of the blank of the hinge fitting is needed to be bent, that is, a bending press plate 51 is located above the bending groove 82, two sides of the bending press plate 51 are provided with a connecting plate 15 processing area, the two connecting plate 15 processing areas are respectively located on the two positioning tables 83, and the ends of the blank of the hinge fitting are inserted into the positioning grooves 84, at this time, the upper die holder 1 and the lower die holder 2 are clamped, the upper die holder 1 drives the bending press plate 51 to move, and the bending press plate 51 drives the bending press 52 to move, when the bending press 52 moves into the bending press 52, and the bending press 52 to bend the blank of the hinge fitting, thereby completing the final step of the hinge fitting processing.

Referring to fig. 3, a cylinder 11 is mounted on one side of a forming table 71, a push plate 12 is connected to a movable end of the cylinder 11, a push rod 13 is arranged on the push plate 12, an end part of the push rod 13 can move to a primary bending groove 73, and a bending table 81 is arranged on one side of the forming table 71 far from the cylinder 11; after the preliminary bending process is performed on the hinge fitting blank, the hinge fitting blank is located on the preliminary bending groove 73, and the hinge fitting blank can be pushed onto the bending groove 82 through the telescopic movement of the cylinder 11, so that the bending process is performed.

The implementation principle of the efficient hinge accessory stamping die provided by the embodiment of the utility model is as follows: when a workpiece needs to be molded, an operator installs the upper die holder 1 and the lower die holder 2 in an existing punching machine, the upper die holder 1 is positioned above, the lower die holder 2 is positioned below, the sheet material belt 14 is placed on the lower die holder 2, the sheet material belt 14 advances along the directions of the lower punching 62 piece 6, the lower preliminary molding piece 7 and the lower bending piece 8, and simultaneously the upper punching 62 piece 3, the upper preliminary molding piece 4 and the upper bending piece 5 punch the sheet material belt 14; the sheet material belt 14 is punched 62 by the cooperation of the upper punched 62 piece 3 and the lower punched 62 piece 6, so that the forming of the mounting hole 17 and the connecting hole 18 is completed; the punched sheet material belt 14 continues to move, the upper primary forming piece 4 and the lower primary forming piece 7 cooperate together to cut off the punched sheet material belt 14 to form a hinge fitting blank, and the hinge fitting blank is subjected to preliminary bending; finally, the hinge fitting blank continuously moves towards the lower bending piece 8, and the upper bending piece 5 and the lower bending piece 8 are matched together to complete bending and forming of the hinge fitting blank, so that the processing and manufacturing of the hinge fitting are completed; through the arrangement, the processing and forming of the hinge fittings can be realized by only one set of die, single punching is changed into continuous punching, the production efficiency of the hinge fittings is improved, meanwhile, the number of occupied punches and workers in the processing and manufacturing process of the hinge fittings is reduced, and the manual output cost is further reduced.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (8)

1. An efficient hinge accessory stamping die is suitable for punching out hinge accessories with sheet material area (14), its characterized in that: the automatic punching device comprises an upper die holder (1) and a lower die holder (2), wherein the upper die holder (1) and the lower die holder (2) are aligned relatively and perform opening and closing movements, an upper punching part (3), an upper primary forming part (4) and an upper bending part (5) are sequentially arranged on the lower surface of the upper die holder (1) along the advancing direction of a sheet material belt (14), and a lower punching part (6), a lower primary forming part (7) and a lower bending part (8) are sequentially arranged on the upper surface of the lower die holder (2) along the advancing direction of the sheet material belt (14); the upper punching piece (3) and the lower punching piece (6) are matched together to punch a sheet-shaped material belt (14) (62); the upper primary forming piece (4) and the lower primary forming piece (7) are matched together to cut off the punched sheet-shaped material belt (14) to form a hinge fitting blank, and meanwhile, the hinge fitting blank is subjected to preliminary bending; the upper bending piece (5) and the lower bending piece (8) are matched together to be used for carrying out secondary bending on the hinge fitting blank after preliminary bending.

2. The efficient hinge assembly stamping die of claim 1, wherein: the upper punching part (3) comprises a punching press plate (31) arranged on the upper die holder (1), and a punching press head (32) is arranged on the punching press plate (31); the lower punching part (6) comprises a punching table (61) arranged on the lower die holder (2), the punching table (61) and the punching press plate (31) are oppositely arranged, a punching hole (62) is formed in the punching table (61), and the punching press head (32) can be inserted into the punching hole (62).

3. A high efficiency hinge assembly stamping die as defined in claim 2, wherein: the punching press head (32) comprises a connection Kong Yatou (321) and a mounting Kong Yatou (322), and the connection Kong Yatou (321) and the mounting Kong Yatou (322) are both arranged on the punching press plate (31); the punching holes (62) comprise connecting hole punching holes (621) and mounting hole punching holes (622), and the connecting hole punching holes (621) and the mounting hole punching holes (622) are formed in the punching table (61); the connection Kong Yatou (321) can be plugged into the connection hole punch (621), and the mounting Kong Yatou (322) can be plugged into the mounting hole punch (622).

4. A high efficiency hinge assembly stamping die as defined in claim 2, wherein: two rows of guide rods (63) are arranged on the punching table (61), the two rows of guide rods (63) are respectively located on one side of the sheet material belt (14), and the two rows of guide rods (63) are used for guiding the advancing direction of the sheet material belt (14).

5. The efficient hinge assembly stamping die of claim 1, wherein: the upper primary molding piece (4) comprises a molding plate (41) arranged on the upper die holder (1), and a trimming press head (42) and a primary bending press head (43) are arranged on the molding plate (41); the lower preliminary molding piece (7) comprises a molding table (71) arranged on the lower die holder (2), a trimming hole (72) is formed in the molding table (71), and the trimming pressure head (42) can be inserted into the trimming hole (72); the forming table (71) is provided with a primary bending groove (73), and the primary bending head (43) can be inserted into the primary bending groove (73).

6. The efficient hinge assembly stamping die of claim 1, wherein: the upper bending piece (5) comprises a bending pressing plate (51) arranged on the upper die holder (1), and a bending pressing head (52) is arranged on the bending pressing plate (51); the lower bending piece (8) comprises a bending table (81) arranged on the lower die holder (2), bending grooves (82) are formed in the bending table (81), positioning tables (83) are arranged on two sides of the bending grooves (82), the two positioning tables (83) are used for supporting a hinge fitting blank to be bent, and the middle of the hinge fitting blank corresponds to the bending grooves (82).

7. The efficient hinge assembly stamping die of claim 6, further comprising: the positioning table (83) is provided with a positioning groove (84), and the end part of the hinge fitting blank can be inserted into the positioning groove (84).

8. The efficient hinge assembly stamping die of claim 1, wherein: the positioning device is characterized in that a positioning rod (9) is arranged on the lower die holder (2), a positioning cylinder (10) is arranged on the upper die holder (1), and the positioning rod (9) is located in the positioning cylinder (10) and is in coaxial sliding connection with the positioning cylinder (10).