CN218015224U - Continuous die for corner pieces - Google Patents

Abstract

The utility model relates to a continuous mould technical field especially relates to a continuous mould of bent piece. A continuous die for a corner piece comprises an upper die and a lower die, wherein the upper die comprises an upper die holder, an upper clamping plate, an upper stop baffle and an upper stripper plate which are sequentially arranged from top to bottom, and the lower die comprises a lower die holder, a lower base plate and a lower die plate which are sequentially arranged from bottom to top; the upper die and the lower die are sequentially provided with a first punching station, a profiling station, a first idle step station, a second punching station, a third punching station, a pressing step station, a flanging station, a fourth punching station, a forming station, a second idle step station and a separating station from left to right. The continuous die for the corner pieces can continuously press a plurality of corner pieces without multiple single punching dies, so that the manufacturing process is simple, the machining efficiency is effectively improved, and the problem of low machining efficiency due to the multiple single punching dies in the process of manufacturing the corner pieces is solved.

Description

Continuous die for corner pieces

Technical Field

The utility model relates to a continuous mould technical field especially relates to a continuous mould of bent piece.

Background

In the manufacturing process of the air conditioner, the corner piece is usually required to be used, in the production process of air conditioner components such as the corner piece, due to the complex structure of the corner piece, each step of procedure corresponds to one mould to be processed in the manufacturing process, a semi-finished product produced in the previous procedure needs to be transferred to the mould in the next procedure in the production process, namely, multiple times of single-die processing needs to be carried out, the manufacturing process is complex, only one finished product can be manufactured through multiple procedures, and the processing efficiency is low.

SUMMERY OF THE UTILITY MODEL

Problem to the background art provides, the utility model aims to provide a continuous mould of bent piece can suppress a plurality of bent pieces in succession, need not to carry out a lot of single die for manufacturing process is simple, effectively improves machining efficiency, has solved the problem that preparation bent piece in-process need carry out a lot of single die, machining efficiency is low.

To achieve the purpose, the utility model adopts the following technical proposal:

a continuous die for a corner piece comprises an upper die and a lower die, wherein the upper die comprises an upper die base, an upper clamping plate, an upper stop baffle and an upper stripper plate which are sequentially arranged from top to bottom, and the lower die comprises a lower die base, a lower base plate and a lower die plate which are sequentially arranged from bottom to top;

a first punching station, a profiling station, a first idle step station, a second punching station, a third punching station, a step pressing station, a flanging station, a fourth punching station, a forming station, a second idle step station and a separating station are sequentially arranged between the upper die and the lower die from left to right;

a first punching module, a profiling module, a second punching module, a third punching module, a step pressing module, a flanging module, a fourth punching module, a forming module and a separating module are arranged between the upper die and the lower die;

the first punching module, the profiling module, the second punching module, the third punching module, the step pressing module, the flanging module, the fourth punching module, the forming module and the separating module are respectively in one-to-one correspondence with the first punching station, the profiling station, the second punching station, the third punching station, the step pressing station, the flanging station, the fourth punching station, the forming station and the separating station.

It is further described that a first discharge hole, a second discharge hole, a third discharge hole, a fourth discharge hole, a fifth discharge hole, a sixth discharge hole and a seventh discharge hole are formed in the lower die plate corresponding to the first punching station, the first punching die set includes a plurality of first punching punches arranged on the upper plate, and the plurality of first punching punches are respectively arranged in one-to-one correspondence with the first discharge hole, the second discharge hole, the third discharge hole, the fourth discharge hole, the fifth discharge hole, the sixth discharge hole and the seventh discharge hole.

It is further described that the lower die plate is provided with a first rib pressing groove, a second rib pressing groove, a third rib pressing groove, a fourth rib pressing groove, a fifth rib pressing groove, a sixth rib pressing groove and a seventh rib pressing groove corresponding to the pressing station, the pressing die set comprises a plurality of rib pressing punches arranged on the upper plate, the first rib pressing groove, the second rib pressing groove, the third rib pressing groove, the fourth rib pressing groove, the fifth rib pressing groove and the sixth rib pressing groove are respectively arranged in one-to-one correspondence with the rib pressing punches, and the seventh rib pressing groove is arranged in correspondence with the two rib pressing punches.

It is further described that the lower die plate is provided with an eighth discharge hole, a ninth discharge hole, a tenth discharge hole and an eleventh discharge hole at a position corresponding to the second punching station, the second punching module comprises a plurality of second punching punches arranged on the upper plate, and the plurality of second punching punches are respectively arranged in one-to-one correspondence with the eighth discharge hole, the ninth discharge hole, the tenth discharge hole and the eleventh discharge hole.

Furthermore, a twelfth discharge hole, a thirteenth discharge hole, a fourteenth discharge hole, a fifteenth discharge hole and a sixteenth discharge hole are formed in the lower die plate corresponding to the third punching station, the third punching module includes a plurality of third punching punches arranged on the upper plate, the twelfth discharge hole corresponds to two of the third punching punches, and the thirteenth discharge hole, the fourteenth discharge hole, the fifteenth discharge hole and the sixteenth discharge hole are respectively arranged in one-to-one correspondence with one of the third punching punches.

Further, the step pressing module comprises a step pressing male die and a step pressing female die, the step pressing male die is arranged on the upper clamping plate, the step pressing female die is arranged on the lower clamping plate, a step pressing convex block protruding downwards is arranged at the bottom end of the step pressing male die, a step groove matched with the step pressing convex block is formed in the surface of the step pressing female die, and the step pressing convex block and the step groove are arranged correspondingly.

The flanging die set comprises a flanging die and a plurality of flanging punches, the flanging punches are respectively arranged on the left side and the right side of the flanging station of the upper clamp plate, the two flanging punches are arranged on the front side of the flanging station of the upper clamp plate at intervals, the flanging die is arranged on the lower die plate, and the flanging die is located below a space formed by enclosing the flanging punches.

It is further described that the lower die plate is provided with a seventeenth discharge hole, an eighteenth discharge hole, a nineteenth discharge hole, a twentieth discharge hole, a twenty-first discharge hole and a twenty-second discharge hole at a position corresponding to the fourth punching station, the fourth punching module comprises a plurality of fourth punching punches arranged on the upper plate, and the seventeenth discharge hole, the eighteenth discharge hole, the nineteenth discharge hole, the twentieth discharge hole, the twenty-first discharge hole and the twenty-second discharge hole are respectively arranged in one-to-one correspondence with the fourth punching punches.

It is further explained that the forming module comprises a forming female die and a forming male die, the forming female die is arranged on the upper clamping plate, the forming male die is arranged on the lower die plate, a forming groove which is concave upwards is formed in the bottom of the forming female die, a forming convex block matched with the forming groove is arranged on the surface of the forming male die, and the forming convex block and the forming groove are correspondingly arranged.

Further, the separating module comprises a cutting punch and a separating female die, the cutting punch is arranged on the upper clamping plate, the separating female die is arranged on the lower die plate at intervals along the left-right direction, and the cutting punch is arranged corresponding to a gap between the two separating female dies;

the upper die also comprises an upper base plate, and the upper base plate is arranged between the upper die base and the upper clamping plate;

the lower die further comprises a lower supporting plate and a plurality of lower cushion blocks, the lower supporting plate is arranged below the lower die base, and the lower cushion blocks are arranged between the lower supporting plate and the lower die base at intervals.

Compared with the prior art, the embodiment of the utility model has following beneficial effect:

when a continuous die of the corner piece is used, a material body is connected to a material belt, the material belt is fed into the die, the first punching die completes punching at the first punching station, the material belt is continuously fed to the profiling station, the profiling module completes profiling and processing in sequence, the material belt sequentially passes through the first idle station, the second punching die and the third punching die respectively perform punching at the second punching station and the third punching station, the pressing step die performs step pressing at the pressing step station, the edge folding is performed at the edge folding station through the edge folding die, the fourth punching die performs punching at the fourth punching station, the workpiece is separated by the separating die at the separating station after the forming die performs bending and forming processing at the forming station, and manufacturing of a product is completed.

Drawings

Fig. 1 is a schematic front view of a continuous mold for corner pieces according to an embodiment of the present invention (when the mold is in a standby state);

fig. 2 is a schematic front view of a continuous mold for corner pieces according to an embodiment of the present invention (when the mold is in a standby state);

fig. 3 is a schematic top view of a material belt according to an embodiment of the present invention (in which the dotted line is the position to be processed at the station);

fig. 4 is a schematic front view of a material belt according to an embodiment of the present invention;

figure 5 is a schematic top view of the lower platen of a continuous die for corner pieces according to an embodiment of the present invention;

wherein: an upper die 1, an upper die base 11, an upper clamping plate 12, an upper stop baffle 13, an upper stripper plate 14, an upper backing plate 15, a lower die 2, a lower die base 21, a lower backing plate 22, a lower die plate 23, a first discharging hole 231, a first ribbing groove 2323, a second discharging hole 232, a second ribbing groove 2324, a third discharging hole 233, a third ribbing groove 2325, a fourth discharging hole 234, a fourth ribbing groove 2326, a fifth discharging hole 235, a fifth ribbing groove 2327, a sixth discharging hole 236, a sixth ribbing groove 2328, a seventh discharging hole 237, a seventh ribbing groove 2329, an eighth discharging hole 238, a ninth discharging hole 239, a tenth discharging hole 2310, an eleventh discharging hole 2311, a twelfth discharging hole 2312, a thirteenth discharging hole 2313, a fourteenth discharging hole 2314, a fifteenth discharging hole 2315, a sixteenth discharging hole 2316, a seventeenth discharging hole 2317, a eighteenth discharging hole 2318, a nineteenth discharging hole 2319, a twenty-ninth discharging hole 2310, a fourteenth discharging hole 2314, a fifteenth discharging hole 2315, a twenty-ninth discharging hole twenty-first discharge hole 2321, twenty-second discharge hole 2322, a lower supporting plate 24, a lower pad 25, a first punching station 31, a profiling station 32, a first idle station 33, a second punching station 34, a third punching station 35, a pressing step station 36, a flanging station 37, a fourth punching station 38, a forming station 39, a second idle station 310, a separating station 311, a first punching module 41, a first punching punch 411, a profiling module 42, a beading punch 421, a second punching module 43, a second punching punch 431, a third punching module 44, a third punching punch 441, a pressing step module 45, a pressing step punch 451, a pressing step bump 4511, a pressing step die 452, a flanging module 46, a flanging die 461, a flanging punch 462, a fourth punching punch 47, a fourth punch 471, a forming module 48, a forming die 481, a forming groove 4811, a forming punch 482, a forming bump 4821, a flanging die 471, a forming die 47, a forming bump, a flanging die and a lower supporting plate, A separating die set 49, a cutting punch 491, and a separating die 492.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1 to 5, a continuous die for a corner piece comprises an upper die 1 and a lower die 2, wherein the upper die 1 comprises an upper die holder 11, an upper clamping plate 12, an upper stop baffle 13 and an upper stripper plate 14 which are sequentially arranged from top to bottom, and the lower die 2 comprises a lower die holder 21, a lower backing plate 22 and a lower die plate 23 which are sequentially arranged from bottom to top;

a first punching station 31, a profiling station 32, a first idle station 33, a second punching station 34, a third punching station 35, a pressing step station 36, a flanging station 37, a fourth punching station 38, a forming station 39, a second idle station 310 and a separating station 311 are sequentially arranged between the upper die 1 and the lower die 2 from left to right;

a first punching module 41, a profiling module 42, a second punching module 43, a third punching module 44, a step pressing module 45, a flanging module 46, a fourth punching module 47, a forming module 48 and a separating module 49 are arranged between the upper die 1 and the lower die 2;

the first punching module 41, the profiling module 42, the second punching module 43, the third punching module 44, the step pressing module 45, the flanging module 46, the fourth punching module 47, the forming module 48 and the separating module 49 are respectively arranged in one-to-one correspondence with the first punching station 31, the profiling station 32, the second punching station 34, the third punching station 35, the step pressing station 36, the flanging station 37, the fourth punching station 38, the forming station 39 and the separating station 311.

By arranging the first punching module 41, the profiling module 42, the second punching module 43, the third punching module 44, the pressing step module 45, the flanging module 46, the fourth punching module 47, the forming module 48 and the separating module 49, when the continuous die of the bent piece is used, a material body is connected to a material belt, the material belt is conveyed into the continuous die, the punching processing is finished by the first punching module 41 at the first punching station 31, the material belt is continuously conveyed to the profiling station 32, the profiling module 42 is profiled and sequentially processed, after passing through the first idle station 33, the punching processing is sequentially carried out by the second punching module 43 and the third punching module 44 at the second punching station 34 and the third punching station 35 respectively, then the pressing step processing is carried out by the pressing step module 45 at the step pressing station 36, the flanging is carried out at the flanging station 37 by the flanging module 46, the fourth punching module 47 is carried out at the fourth punching station 38, after the bending processing is carried out by the forming module 48 at the forming station 39, the separating module 49 is used for carrying out the flanging processing of the bent piece, the single die, the single-die is manufactured, the problem that the punching die is effectively solved, the single-punching die manufacturing process is low in a plurality of the single-time, and the single-time punching die manufacturing process, the single-punching die manufacturing process is simple and the punching efficiency is improved. Wherein, the material area is the transport mechanism when continuous mould uses, for prior art, does not describe here tiredly.

To be further explained, a first discharging hole 231, a second discharging hole 232, a third discharging hole 233, a fourth discharging hole 234, a fifth discharging hole 235, a sixth discharging hole 236 and a seventh discharging hole 237 are formed in the lower template 23 corresponding to the first punching station 31, the first punching module 41 includes a plurality of first punching punches 411 arranged on the upper clamping plate 12, and the plurality of first punching punches 411 are respectively arranged corresponding to the first discharging hole 231, the second discharging hole 232, the third discharging hole 233, the fourth discharging hole 234, the fifth discharging hole 235, the sixth discharging hole 236 and the seventh discharging hole 237 one by one.

Through setting up a plurality ofly first drift 411 that punches a hole realizes punching the processing on the material body, and the material body is unloaded through the discharge opening that corresponds, because it is a plurality of first drift 411 that punches a hole sets up on same punching die group for can punch a hole in the position synchronization that needs punch a hole in the process, can effectively improve production efficiency.

More specifically, a first rib pressing groove 2323, a second rib pressing groove 2324, a third rib pressing groove 2325, a fourth rib pressing groove 2326, a fifth rib pressing groove 2327, a sixth rib pressing groove 2328 and a seventh rib pressing groove 2329 are arranged at a position of the lower template 23 corresponding to the profiling station 32, the profiling module 42 includes a plurality of rib pressing punches 421 arranged on the upper clamp plate 12, the first rib pressing groove 2323, the second rib pressing groove 2324, the third rib pressing groove 2325, the fourth rib pressing groove 2326, the fifth rib pressing groove 2327 and the sixth rib pressing groove 2328 are respectively arranged in one-to-one correspondence with one rib pressing punch 421, and the seventh rib pressing groove 2329 is arranged in correspondence with two rib pressing punches 421.

By arranging the first ribbing groove 2323, the second ribbing groove 2324, the third ribbing groove 2325, the fourth ribbing groove 2326, the fifth ribbing groove 2327, the sixth ribbing groove 2328 and the seventh ribbing groove 2329, the ribbing punch 421 can be matched with the ribbing grooves to realize profiling, specifically, the first ribbing groove 2323, the second ribbing groove 2324, the third ribbing groove 2325, the fourth ribbing groove 2326, the fifth ribbing groove 2327 and the sixth ribbing groove 2328 are respectively and correspondingly arranged with one ribbing punch 421 to extrude a shape corresponding to the ribbing grooves, and the seventh ribbing groove 2329 and the two ribbing punches 421 are correspondingly arranged to perform profiling of two grooves with smaller areas in the same ribbing groove.

To be further described, the lower die plate 23 is provided with an eighth discharge hole 238, a ninth discharge hole 239, a tenth discharge hole 2310 and an eleventh discharge hole 2311 corresponding to the second punching station 34, the second punching module 43 includes a plurality of second punching punches 431 provided on the upper plate 12, and the plurality of second punching punches 431 are respectively provided in one-to-one correspondence with the eighth discharge hole 238, the ninth discharge hole 239, the tenth discharge hole 2310 and the eleventh discharge hole 2311.

Through setting up a plurality of second drift 431 that punches a hole, realize punching a hole on the material body, because a plurality of second drift 431 that punches a hole sets up on same punching die group for can punch a hole to the position synchronization that needs punch a hole in the process, can effectively improve production efficiency.

Specifically, a twelfth discharge hole 2312, a thirteenth discharge hole 2313, a fourteenth discharge hole 2314, a fifteenth discharge hole 2315 and a sixteenth discharge hole 2316 are formed in the position, corresponding to the third punching station 35, of the lower die plate 23, the 44 includes a plurality of third punching punches 441 arranged on the upper die plate 12, the twelfth discharge hole 2312 is arranged corresponding to the two third punching punches 441, and the thirteenth discharge hole 2313, the fourteenth discharge hole 2314, the fifteenth discharge hole 2315 and the sixteenth discharge hole 2316 are respectively arranged corresponding to one third punching punch 441.

Through setting up a plurality of third drift 441 that punches a hole, realize punching a hole on the material body, because a plurality of third drift 441 that punches a hole sets up on same punching die group for can punch a hole to the position synchronization that needs punch a hole in the process, can effectively improve production efficiency.

To be further described, the step pressing module 45 includes a step pressing male die 451 and a step pressing female die 452, the step pressing male die 451 is disposed on the upper clamp plate 12, the step pressing female die 452 is disposed on the lower clamp plate 23, a step pressing convex block 4511 protruding downwards is disposed at a bottom end of the step pressing male die 451, a step groove matched with the step pressing convex block 4511 is disposed on a surface of the step pressing female die 452, and the step pressing convex block 4511 and the step groove are disposed correspondingly.

Through the arrangement of the step pressing male die 451 and the step pressing female die 452, step pressing treatment on a material body can be achieved, so that steps matched with the step pressing convex blocks 4511 in shape can be pressed on the material body, the step pressing treatment can be achieved on a continuous die, independent punching is not needed, and the machining efficiency is effectively improved.

More specifically, the hemming module 46 includes a hemming die 461 and a plurality of hemming punches 462, the upper clamp 12 is provided with one hemming punch 462 on each of the left and right sides of the hemming station 37, the upper clamp 12 is provided with two hemming punches 462 spaced from the front side of the hemming station 37, the hemming die 461 is provided on the lower die plate 23, and the hemming die 461 is located below a space surrounded by the plurality of hemming punches 462.

By arranging the hemming female die 461 and the plurality of hemming punches 462, the hemming punches 462 can be matched with the hemming female die 461 to realize hemming treatment of the material body, specifically, by arranging the hemming punches 462 at different positions, hemming treatment can be simultaneously carried out on different positions of the material body, and the processing efficiency is improved.

Specifically, a seventeenth discharging hole 2317, an eighteenth discharging hole 2318, a nineteenth discharging hole 2319, a twentieth discharging hole 2320, a twenty-first discharging hole 2321 and a twenty-second discharging hole 2322 are formed in the position, corresponding to the fourth punching station 38, of the lower template 23, the fourth punching module 47 includes a plurality of fourth punching punches 471 arranged on the upper plate 12, and the seventeenth discharging hole 2317, the eighteenth discharging hole 2318, the nineteenth discharging hole 2319, the twentieth discharging hole 2320, the twenty-first discharging hole 2321 and the twenty-second discharging hole 2322 are respectively arranged in a one-to-one correspondence with one of the fourth punching punches 471.

Through setting up a plurality of fourth drift 471 that punches a hole realizes punching on the material body, because it is a plurality of fourth drift 471 that punches a hole sets up on same punching die set for can punch a hole in step to the position synchronization that needs punch a hole, can effectively improve production efficiency.

Further, the forming module 48 includes a forming cavity 481 and a forming cavity 482, the forming cavity 481 is disposed on the upper clamp plate 12, the forming cavity 482 is disposed on the lower clamp plate 23, a forming groove 4811 recessed upwards is disposed at the bottom of the forming cavity 481, a forming protrusion 4821 matched with the forming groove 4811 is disposed on the surface of the forming cavity 482, and the forming protrusion 4821 and the forming groove 4811 are disposed correspondingly.

By arranging the forming female die 481 and the forming male die 482, bending forming processing on a material body can be realized, a workpiece formed by bending is obtained, bending forming processing can be realized on a continuous die, bending forming is not required to be carried out independently, and processing efficiency is effectively improved.

Specifically, the separating module 49 includes a cutting punch 491 and a separating die 492, the cutting punch 491 is disposed on the upper clamp plate 12, the separating die 492 is disposed on the lower die plate 23 at intervals in the left-right direction, and the cutting punch 491 is disposed corresponding to a gap between the two separating dies 492;

the upper die 1 further comprises an upper backing plate 15, and the upper backing plate 15 is arranged between the upper die holder 11 and the upper clamping plate 12;

the lower die 2 further comprises a lower supporting plate 24 and a plurality of lower cushion blocks 25, the lower supporting plate 24 is arranged below the lower die base 21, and the plurality of lower cushion blocks 25 are arranged between the lower supporting plate 24 and the lower die base 21 at intervals.

By providing the cutting punch 491 and the separation die 492, the separation processing of the finished workpiece can be realized to complete the manufacture of the product, and the cutting and punching are not required to be performed separately, thereby effectively improving the processing efficiency.

In a further description, by arranging the upper cushion plate 15 between the upper die holder 11 and the upper clamp plate 12, the upper cushion plate 15 can bear the concentrated stress generated by the punch during the punching process, so as to prevent the punch from invading the upper die holder 11, and improve the structural stability of the continuous die.

Further, by arranging the lower supporting plate 24 and the plurality of lower cushion blocks 25, the lower cushion blocks 25 can increase the height of the die to achieve the closing stroke of the punch press, specifically, the distance between two adjacent lower cushion blocks 25 is the same, and the lower die holder 21 is horizontally arranged, so that the punching effect is ensured, and the quality of the manufactured corner piece is good.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The continuous die for the corner piece is characterized by comprising an upper die and a lower die, wherein the upper die comprises an upper die base, an upper clamping plate, an upper stop baffle and an upper stripper plate which are sequentially arranged from top to bottom;

a first punching station, a profiling station, a first idle station, a second punching station, a third punching station, a step pressing station, a flanging station, a fourth punching station, a forming station, a second idle station and a separating station are sequentially arranged between the upper die and the lower die from left to right;

a first punching module, a profiling module, a second punching module, a third punching module, a step pressing module, a flanging module, a fourth punching module, a forming module and a separating module are arranged between the upper die and the lower die;

the first punching module, the profiling module, the second punching module, the third punching module, the step pressing module, the flanging module, the fourth punching module, the forming module and the separating module are respectively in one-to-one correspondence with the first punching station, the profiling station, the second punching station, the third punching station, the step pressing station, the flanging station, the fourth punching station, the forming station and the separating station.

2. The progressive die for corner pieces according to claim 1, wherein the lower die plate is provided with a first discharge hole, a second discharge hole, a third discharge hole, a fourth discharge hole, a fifth discharge hole, a sixth discharge hole and a seventh discharge hole at positions corresponding to the first punching stations, the first punching module comprises a plurality of first punching punches provided on the upper plate, and the plurality of first punching punches are provided in one-to-one correspondence with the first discharge hole, the second discharge hole, the third discharge hole, the fourth discharge hole, the fifth discharge hole, the sixth discharge hole and the seventh discharge hole, respectively.

3. The continuous die for the corner pieces according to claim 1, wherein the lower die plate is provided with a first rib pressing groove, a second rib pressing groove, a third rib pressing groove, a fourth rib pressing groove, a fifth rib pressing groove, a sixth rib pressing groove and a seventh rib pressing groove at positions corresponding to the pressing stations, the pressing die set comprises a plurality of rib pressing punches arranged on the upper die plate, the first rib pressing groove, the second rib pressing groove, the third rib pressing groove, the fourth rib pressing groove, the fifth rib pressing groove and the sixth rib pressing groove are respectively arranged corresponding to one rib pressing punch, and the seventh rib pressing groove is arranged corresponding to two rib pressing punches.

4. The progressive die of corner pieces according to claim 1, wherein the lower die plate is provided with an eighth discharge hole, a ninth discharge hole, a tenth discharge hole and an eleventh discharge hole corresponding to the second punching station, the second punching die set comprises a plurality of second punching punches provided on the upper plate, and the plurality of second punching punches are provided in one-to-one correspondence with the eighth discharge hole, the ninth discharge hole, the tenth discharge hole and the eleventh discharge hole, respectively.

5. The progressive die of corner pieces according to claim 1, wherein the lower die plate is provided with a twelfth discharge hole, a thirteenth discharge hole, a fourteenth discharge hole, a fifteenth discharge hole and a sixteenth discharge hole at positions corresponding to the third punching stations, the third punching die set comprises a plurality of third punching punches provided on the upper plate, the twelfth discharge hole is provided corresponding to two of the third punching punches, and the thirteenth discharge hole, the fourteenth discharge hole, the fifteenth discharge hole and the sixteenth discharge hole are provided corresponding to one of the third punching punches, respectively.

6. The continuous die for the corner pieces according to claim 1, wherein the step pressing die set comprises a step pressing male die and a step pressing female die, the step pressing male die is arranged on the upper clamping plate, the step pressing female die is arranged on the lower clamping plate, a step pressing convex block protruding downwards is arranged at the bottom end of the step pressing male die, a step groove matched with the step pressing convex block is arranged on the surface of the step pressing female die, and the step pressing convex block is arranged corresponding to the step groove.

7. The continuous die for the corner pieces according to claim 1, wherein the hemming die set comprises a hemming die and a plurality of hemming punches, one hemming punch is respectively arranged on each of the left side and the right side of the hemming station of the upper clamping plate, two hemming punches are arranged on the front side of the hemming station of the upper clamping plate at intervals, the hemming die is arranged on the lower die plate, and the hemming die is located below a space formed by enclosing the plurality of hemming punches.

8. The continuous die for corner pieces according to claim 1, wherein the lower die plate is provided with a seventeenth discharge hole, an eighteenth discharge hole, a nineteenth discharge hole, a twentieth discharge hole, a twenty-first discharge hole and a twenty-second discharge hole corresponding to the fourth punching station, the fourth punching module comprises a plurality of fourth punching punches provided on the upper plate, and the seventeenth discharge hole, the eighteenth discharge hole, the nineteenth discharge hole, the twentieth discharge hole, the twenty-first discharge hole and the twenty-second discharge hole are provided in one-to-one correspondence with one of the fourth punching punches.

9. The continuous die for the corner pieces according to claim 1, wherein the forming module comprises a forming female die and a forming male die, the forming female die is arranged on the upper clamping plate, the forming male die is arranged on the lower clamping plate, a forming groove which is concave upwards is formed in the bottom of the forming female die, a forming convex block which is matched with the forming groove is arranged on the surface of the forming male die, and the forming convex block is arranged corresponding to the forming groove.

10. The continuous die for the corner pieces according to claim 1, wherein the separating die set comprises a cutting punch and a separating die, the cutting punch is arranged on the upper clamping plate, the separating die is arranged on the lower die plate at intervals along the left-right direction, and the cutting punch is arranged corresponding to a gap between the two separating dies;

the upper die also comprises an upper base plate, and the upper base plate is arranged between the upper die base and the upper clamping plate;

the lower die further comprises a lower supporting plate and a plurality of lower cushion blocks, the lower supporting plate is arranged below the lower die base, and the lower cushion blocks are arranged between the lower supporting plate and the lower die base at intervals.

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