A metal tray stamping forming die and system with self-cleaning function

Abstract

The present invention discloses a metal tray stamping forming die and system with a self-cleaning function, and belongs to the technical field of stamping forming equipment. The die comprises an upper die assembly and a lower die assembly, wherein the lower die assembly comprises a lower die frame plate, a lower die fixing plate and a lower die are installed on the lower die frame plate, a lower die guide column is arranged on the lower die fixing plate, a die frame guide column is arranged on the lower die frame plate, and the upper die assembly is slidably connected with the die frame guide column; the lower die outer sleeve is provided with a discharge plate, the discharge plate is provided with a through hole and an annular groove, and a spray cleaning inlet is provided on the side of the discharge plate, and the spray cleaning inlet and the through hole are both connected with the annular groove. The present invention cleans dust, debris and oxidized dandruff in the cavity in a timely manner during the production process to prevent accumulation, ensure the normal use of the die, extend the service life of the die, thereby improving work efficiency and production quality, and reducing production costs. At the same time, it has the characteristics of recycling, cleaning and sanitation, and energy saving and environmental protection.

Description

Technical Field

[0001] The invention relates to a metal tray stamping forming die and system with a self-cleaning function, belonging to the technical field of stamping forming equipment. Background Art

[0002] In the traditional stamping process, a lot of dust and debris will be generated, especially in the stamping process with hot-rolled steel plates as raw materials, a large amount of oxidized shavings will fall off. These dust, debris and oxidized shavings not only pollute the production site, but also accumulate in the mold cavity, which will not only affect the processing quality of the product, but also damage the mold, affect the normal use of the mold, and increase the maintenance cost of the mold.

[0003] In order to improve work efficiency and production quality and reduce production costs, the present invention mainly cleans dust, debris and oxidized dandruff in the cavity during the production process in a timely manner to prevent accumulation, ensure the normal use of the mold and extend the service life of the mold. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a metal pallet stamping forming mold and system with a self-cleaning function. The mold can promptly clean the dust, debris and oxidized dandruff in the cavity during the production process to prevent accumulation, ensure the normal use of the mold, extend the service life of the mold, thereby improving work efficiency and production quality, and reducing production costs. At the same time, it has the characteristics of recycling, cleaning and hygiene, and has energy-saving and environmental protection effects.

[0005] The first object of the present invention is to provide a metal pallet stamping forming die with a self-cleaning function, comprising an upper die assembly and a lower die assembly, the lower die assembly comprising a lower die frame plate, a lower die pad, a lower die fixing plate and a lower die are installed on the lower die frame plate, a lower die fixing plate is provided with a lower die guide column, a die frame plate is provided with a die frame guide column, the upper die assembly is slidably connected to the die frame guide column; the lower die outer sleeve is provided with a discharge plate, the discharge plate is provided with a through hole and an annular groove, the discharge plate is slidably connected to the lower die guide column, a side of the discharge plate is provided with a spray cleaning inlet, the spray cleaning inlet and the through hole are both connected to the annular groove; the surface of the annular groove is provided with a cover plate, a plurality of nozzles are installed on the cover plate, and the plurality of nozzles are connected to the annular groove.

[0006] In one embodiment of the present invention, the unloading plate is provided with a cylindrical hole, and the plurality of through holes are located on the inner side of the cylindrical hole; the annular groove is located on the outer side of the cylindrical hole on the lower plane of the unloading plate; and the cover plate is used to cover the annular groove.

[0007] In one embodiment of the present invention, the upper mold assembly includes an upper mold frame plate, an upper mold pad and an upper mold are installed below the upper mold frame plate, the upper mold frame plate is slidably connected to the mold frame guide column, and the upper mold is slidably connected to the lower mold guide column.

[0008] In one embodiment of the present invention, sliding guide sleeves are provided at the connections between the four corners of the upper mold frame plate and the mold frame guide pillars, and sliding guide sleeves are also provided at the connections between the four corners of the upper mold and the lower mold guide pillars.

[0009] In one embodiment of the present invention, a discharge spring is installed on the lower die fixing plate, one end of the discharge spring abuts against the lower die fixing plate, and the other end abuts against the discharge plate.

[0010] In one embodiment of the present invention, a plurality of aligned ash dropping holes are respectively provided on the lower die fixing plate, the lower die pad plate and the lower die frame plate at positions corresponding to the annular groove of the discharge plate, and the ash dropping holes are annular notches.

[0011] In one embodiment of the present invention, an ash collecting ring is provided above the lower mold fixing plate, and the ash dropping hole is located in the ash collecting ring.

[0012] The second object of the present invention is to provide a metal pallet stamping and forming system with a self-cleaning function, comprising a metal pallet stamping and forming mold and a self-cleaning circulation device, wherein the metal pallet stamping and forming mold is arranged on a workbench, and the self-cleaning circulation device comprises an ash hopper, a high-pressure circulation pump, a circulation water tank, a circulation pipeline and a filter screen, wherein the ash hopper is installed on the bottom surface of the lower mold frame plate and covers a plurality of ash holes on the lower mold frame plate, an ash discharge port is provided on the workbench, and the ash hopper passes through the ash discharge port of the workbench; a material dropping slope and a discharge slope are arranged below the ash discharge port of the workbench, a filter grille is arranged at one end of the material dropping slope close to the discharge slope, and a waste collection box is arranged at the outlet of the material dropping slope; a circulation water tank or an ash collection box is arranged at the outlet of the discharge slope, and a dust hood is arranged above the ash collection box.

[0013] In one embodiment of the present invention, a plurality of partitions are arranged in the circulating water tank, and flow openings are alternately staggered on the upper side of each partition; the high-pressure circulating pump is installed at the end angle position of the circulating water tank and separated by a filter; one end of the circulating pipeline is connected to the outlet of the high-pressure circulating pump, and the other end is connected to the spray cleaning inlet of the unloading plate.

[0014] In one embodiment of the present invention, the spray cleaning inlet is externally connected to a pressurized cleaning liquid or compressed air pumped out by a high-pressure circulation pump.

[0015] Beneficial Effects

[0016] (1) The present invention can clean dust, debris and oxidized scale in the mold cavity in a timely manner during the production process to prevent accumulation, ensure the normal use of the mold, and extend the service life of the mold, thereby improving work efficiency and production quality and reducing production costs. At the same time, it has the characteristics of recycling, cleaning and hygiene, energy saving and environmental protection, simple structure, flexible operation, and easy use and maintenance.

[0017] (2) The unloading plate of the present invention is provided with a through hole and an annular groove, and a spray cleaning inlet is provided on the side of the unloading plate, and the spray cleaning inlet and the through hole are both connected to the annular groove; a cover plate is provided on the surface of the annular groove, and a plurality of nozzles are installed on the cover plate, and the plurality of nozzles are connected to the annular groove; during the process that the unloading plate moves up and down outside the lower mold, the dust, debris and oxidized dandruff adhering to the lower mold fixing plate and the side wall of the lower mold can be effectively removed through multiple spray cleaning of the through holes and nozzles, and the dust, debris and oxidized dandruff in the cavity during the production process can be cleaned in time to prevent accumulation, thereby ensuring the normal use of the mold and extending the service life of the mold.

[0018] (3) The circulating water tank of the present invention is provided with a plurality of partitions, and flow openings are alternately staggered on the upper side of each partition, which has the function of multi-stage sedimentation; a high-pressure circulating pump is installed at the end corner position of the circulating water tank and is separated by a filter screen; one end of the circulating pipeline is connected to the outlet of the high-pressure circulating pump, and the other end is connected to the spray cleaning inlet of the discharge plate, so as to ensure that the spray cleaning liquid is recycled.

[0019] (4) The spray cleaning inlet of the present invention is externally connected to a cleaning liquid or compressed air, that is, the present invention can use both liquid spray cleaning and compressed air spraying.

[0020] (5) When the present invention adopts liquid as the spray cleaning medium, the liquid containing dust, debris and oxidized skin debris is precipitated through multiple stages of the circulating water tank. The dust, debris and oxidized skin debris are precipitated in the liquid and the front-stage precipitation area of ​​the circulating water tank to be centrally cleaned. The precipitated liquid flows to the end of the circulating water tank, is filtered again through the filter screen, and is transported to the discharge plate spray cleaning inlet by the high-pressure circulating water pump, recycled, and sprayed again for cleaning. When the present invention adopts compressed air spraying, the dust, debris and oxidized skin debris fall into the dust collecting box for centralized cleaning. The dust collecting hood can effectively prevent the dust, debris and oxidized skin debris from falling into the dust collecting box and being blown away and leaking, thereby protecting the production site environment from pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the stamping die of the metal tray of the present invention.

[0022] Figure 2 It is a front view of the stamping die for the metal tray of the present invention.

[0023] Figure 3 It is a three-dimensional view of the lower mold assembly of the present invention.

[0024] Figure 4 It is a three-dimensional diagram of the lower mold fixing plate and the ash dropping hole of the present invention.

[0025] Figure 5 It is a stereoscopic view of the lower mold frame plate and the mold frame guide column of the present invention.

[0026] Figure 6 It is a three-dimensional view of the stripper plate of the present invention.

[0027] Figure 7 This is a stereoscopic view of the stripper plate of the present invention from another perspective.

[0028] Figure 8 It is a cross-sectional view of the stripper plate of the present invention.

[0029] Fig. 9 It is a three-dimensional view of the annular groove on the stripper plate of the present invention.

[0030] Fig.10 It is a bottom view of the stripper plate of the present invention.

[0031] Fig.11 for Fig.10 AA section view.

[0032] Fig.12 It is a three-dimensional diagram of the ash hopper of the present invention.

[0033] Fig.13 It is a three-dimensional diagram of the circulating water tank of the present invention.

[0034] Fig.14 It is a cross-sectional view of the circulating water tank of the present invention.

[0035] Fig.15 It is a structural schematic diagram of the metal tray stamping forming system of the present invention.

[0036] Among them: 1. Upper die assembly; 11. Upper die frame plate; 12. Upper die pad; 13. Upper die; 2. Lower die assembly; 21. Die frame guide pillar; 22. Lower die frame plate; 23. Lower die pad; 24. Lower die fixing plate; 25. Unloading spring; 26. Unloading plate; 261. Nozzle; 262. Cover plate; 263. Annular groove; 264. Blowing cleaning inlet; 265. Through hole; 27. Lower die guide pillar; 2 8. Lower die; 29. ​​Ash collecting ring; 3. Self-cleaning circulation device; 31. Ash hopper; 32. High-pressure circulation pump; 33. Circulating water tank; 331. Flow port; 34. Circulating pipeline; 35. Filter screen; 36. Dust hood; 37. Dropping slope; 38. Discharge slope; 39. Filter grid; 4. Stamping machine piston rod; 5. Steel plate raw material; 6. Workbench; 7. Waste collection box; 8. Ash dropping hole. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] Example 1

[0041] like Figure 1-12 As shown in FIG. 15 , this embodiment provides a metal pallet stamping forming die with a self-cleaning function, including an upper die assembly 1 and a lower die assembly 2, wherein the upper die assembly 1 includes an upper die frame plate 11, an upper die pad 12 and an upper die 13, and the lower die assembly 2 includes a die frame guide column 21, a lower die frame plate 22, a lower die pad 23, a lower die fixing plate 24, a discharge spring 25, a discharge plate 26, a lower die guide column 27, a lower die 28 and an ash collecting ring 29.

[0042] Furthermore, the upper die frame plate 11 is connected to the piston rod 4 of the punching machine, and the upper die pad 12 and the upper die 13 are sequentially installed downwardly below the upper die frame plate 12. The upper die frame plate 11 is slidably connected to the die frame guide column 21, and the upper die 13 is slidably connected to the lower die guide column 27. Sliding guide sleeves are provided at the connections between the four corners of the upper die frame plate 11 and the die frame guide column 21, and sliding guide sleeves are also provided at the connections between the four corners of the upper die 13 and the lower die guide column 27. When the upper die 13 is pressed down with the piston rod 4 of the punching machine, the sliding guide sleeve moves up and down along the die frame guide column 21 to ensure that the position of the upper die 13 does not shift during the stamping process, thereby ensuring the size of the stamped product.

[0043] Furthermore, the lower die frame plate 22 is fixedly mounted on the workbench 6 of the press or punch press, and a lower die pad 23, a lower die fixing plate 24 and a lower die 28 are sequentially mounted upwardly on the lower die frame plate 22; die frame guide posts 21 are mounted at the four corners of the lower die frame plate 22, and the die frame guide posts 21 are used for guiding the upper die frame plate 11; lower die guide posts 27 are mounted at the four corners of the lower die fixing plate 24, and the lower die guide posts 27 are used for guiding the upper die 13; the lower die 28 jacket A stripper plate 26 is provided, and the stripper plate 26 is slidably connected to the lower die guide column 27. A sliding guide sleeve is provided at the connection between the stripper plate 26 and the lower die guide column 27, and the stripper plate 26 can slide up and down along the lower die guide column 27; a stripper spring 25 is installed on the lower die fixed plate 24, one end of the stripper spring 25 abuts against the lower die fixed plate 24, and the other end abuts against the stripper plate 26; the stripper spring 25 is used to support the stripper plate 26 and the stamped product on the stripper plate 26.

[0044] Furthermore, the stripper plate 26 has a cylindrical hole at the center, and a through hole 265 is provided in the cylindrical hole. The lower mold 28 can be inserted into the cylindrical hole of the stripper plate 26, and the through hole 265 faces the side wall of the lower mold 28. The cylindrical hole in the center of the stripper plate 26 facilitates the lower mold 28 to pass through without interference when the stripper plate 26 moves up and down; an annular groove 263 is provided on the outer side of the cylindrical hole on the lower plane of the stripper plate 26, and a spray cleaning inlet 264 is provided on the side of the stripper plate 26. The spray cleaning inlet 264 is used to connect a spray cleaning pipeline or a spray compressed air pipeline and is connected to the annular groove 263; the through hole 265 is also connected to the annular groove 263; an annular cover plate 262 is provided on the surface of the annular groove 263, and the cover plate 262 is used to seal the annular groove 263 so that the liquid or gas in the annular groove 263 does not leak. A plurality of nozzles 261 for spray cleaning are installed on the cover plate 262 at positions corresponding to the annular groove 263. The nozzles 261 are connected to the annular groove 263. The nozzles 261 are used to spray and clean the dust, debris and oxidized dandruff stuck on the lower mold fixing plate 24. The through holes 265 are used to spray and clean the dust, debris and oxidized dandruff on the side walls of the lower mold 28. In the process of the unloading plate 26 moving up and down outside the lower mold 28, the dust, debris and oxidized dandruff stuck on the lower mold fixing plate 24 and the side walls of the lower mold 28 can be effectively removed through multiple spray cleanings of the through holes 265 and the nozzles 261. The dust, debris and oxidized dandruff in the cavity during the production process can be cleaned in time to prevent accumulation, thereby ensuring the normal use of the mold and extending the service life of the mold.

[0045] Optionally, a plurality of aligned ash dropping holes 8 are respectively provided on the lower mold fixing plate 24, the lower mold pad plate 23 and the lower mold frame plate 22 at positions corresponding to the annular groove 263 of the discharge plate 26, and the ash dropping holes 8 are annular notches for dropping ash.

[0046] Optionally, an ash collecting ring 29 is provided above the lower mold fixing plate 24, and the ash dropping hole 8 is located in the ash collecting ring 29. The ash collecting ring 29 is used to prevent dust, debris and oxidized shavings from overflowing when they fall.

[0047] Furthermore, the spray cleaning inlet 264 is externally connected to the pressurized cleaning liquid or compressed air pumped out by the high-pressure circulation pump 32, that is, the present invention can adopt both liquid spray cleaning and compressed air spraying.

[0048] Example 2

[0049] like Figure 13-15As shown, this embodiment provides a metal tray stamping system with a self-cleaning function, which includes the metal tray stamping die and the self-cleaning circulation device provided in Example 1; the metal tray stamping die is arranged on a workbench 6, and the self-cleaning circulation device includes an ash hopper 31, a high-pressure circulation pump 32, a circulation water tank 33, a circulation pipeline 34, a filter screen 35 and a dust collecting cover 36, the ash hopper 31 is installed on the bottom surface of the lower mold frame plate 22, and the workbench 6 is provided with an ash discharge port. The ash pipe passes through the ash discharge port of the workbench 6; a material dropping slope 37 and a discharge slope 38 are arranged below the ash discharge port of the workbench 6, a filter grille 39 is arranged at one end of the material dropping slope 37 close to the discharge slope 38, a waste collection box is arranged at the outlet of the material dropping slope 37, and the waste after punching passes through the material dropping slope 37 and falls into the waste collection box 7; a circulating water tank 33 is arranged at the outlet of the discharge slope 38, and the circulating water tank 33 is used for centralized spray cleaning and blowing out dust, debris and oxidized dandruff.

[0050] Furthermore, a plurality of partitions are arranged in the circulating water tank 33, and flow openings 331 are alternately staggered on the upper side of each partition, which has a multi-stage sedimentation function; the high-pressure circulating pump 32 is installed at the end angle position of the circulating water tank 33 and is separated by a filter screen 35; one end of the circulating pipeline 34 is connected to the outlet of the high-pressure circulating pump 32, and the other end is connected to the spray cleaning inlet 264 of the unloading plate 26, to ensure that the spray cleaning liquid is recycled.

[0051] Furthermore, an ash hopper 31 is installed below the bottom plane of the lower mold frame plate 22. The ash hopper 31 covers the ash holes 8 of the multiple annular grooves on the lower mold frame plate 22 to ensure that all ash does not leak and is discharged from the pipe mouth of the ash hopper 31. The discharged dust, debris and oxidized shavings are flushed by circulating water and flow into the circulating water tank 33 of the self-cleaning circulation device along the discharge slope 38 of the stamping machine.

[0052] Example 3

[0053] This embodiment further provides a metal tray stamping system with a self-cleaning function. The difference between this embodiment and the liquid jet cleaning in embodiment 2 is that this embodiment uses compressed air blowing, that is, the circulation pipeline 34 of embodiment 2 is connected to compressed air, and the circulation water tank 33 is replaced by an ash collecting box, and a dust collecting hood 36 is arranged above the ash collecting box. When compressed air blowing is used, dust, debris and oxidized shavings fall into the ash collecting box for centralized cleaning, and the dust collecting hood 36 can effectively prevent dust, debris and oxidized shavings from being lifted up and leaking out when they fall in, thereby protecting the production site environment from pollution.

[0054] The working principle of the present invention is as follows: after the steel plate raw material 5 enters the stamping position of the upper and lower molds from the feed port, the piston rod 4 of the punching machine drives the upper mold assembly 1 to press down along the mold frame guide column 21; the sheet material drives the unloading plate 26 to move down along the lower mold guide column 27; after the stamping is completed, the piston rod 4 of the punching machine drives the upper mold assembly 1 to rise along the mold frame guide column 21, and the unloading plate 26 drives the stamped finished product on the unloading plate 26 to move up along the lower mold guide column 27 under the action of the unloading spring 26; the punching waste falls into the waste collection box 7 through the blanking slope 37 of the machine tool punching, and the generated dust, debris and oxidized shavings fall into the ash hopper 31 from the ash dropping holes 8 of the multiple annular notches of the lower mold fixing plate 24, the lower mold pad plate 23 and the lower mold frame plate 22, and the ash collecting ring 29 prevents the dust, debris and oxidized shavings from overflowing when falling.

[0055] When the unloading plate 26 starts to move upward, the high-pressure circulating water pump 32 or the compressed air solenoid valve works at the same time to perform blowing and spray cleaning, which helps dust, debris and oxidized dandruff to fall smoothly into the ash hopper 31. At the same time, the dust, debris and oxidized dandruff stuck to the lower mold fixing plate 24 and the side wall of the lower mold 28 can be blown away to effectively prevent the accumulation of dust, debris and oxidized dandruff.

[0056] The dust, debris and oxidized skin debris sprayed out after cleaning falls into the ash hopper 31, passes through the filter grille 39, and enters the discharge slope 38 of the dust, debris and oxidized skin debris spray cleaning of the machine tool, and falls into the circulating water tank or ash collecting box along the discharge slope 38; when liquid is used as the spray cleaning medium, the liquid containing dust, debris and oxidized skin debris is precipitated in multiple stages in the circulating water tank 33, and the dust, debris and oxidized skin debris liquid are precipitated and the front-stage sedimentation area of ​​the circulating water tank 33 is centrally cleaned. The precipitated liquid flows to the end of the circulating water tank 33, is filtered again through the filter net 35, and is transported to the discharge plate 26 spray cleaning inlet by the high-pressure circulating water pump 32, recycled, and sprayed again for cleaning.

[0057] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A metal tray stamping system with self-cleaning function, It is characterized in that It includes a metal tray stamping forming die with self-cleaning function and a self-cleaning circulation device; The metal tray stamping forming die comprises an upper die assembly (1) and a lower die assembly (2); the lower die assembly (2) comprises a lower die frame plate (22); a lower die pad plate (23), a lower die fixing plate (24) and a lower die (28) are mounted on the lower die frame plate (22); a lower die guide column (27) is arranged on the lower die fixing plate (24); a die frame guide column (21) is arranged on the lower die frame plate (22); the upper die assembly (1) is slidably connected to the die frame guide column (21); and a discharge plate (26) is provided on the outer sleeve of the lower die (28). The stripper plate (26) is provided with a through hole (265) and an annular groove (263), the stripper plate (26) is slidably connected to the lower mold guide column (27), a spray cleaning inlet (264) is provided on the side of the stripper plate (26), and the spray cleaning inlet (264) and the through hole (265) are both connected to the annular groove (263); a cover plate (262) is provided on the surface of the annular groove (263), and a plurality of nozzles (261) are installed on the cover plate (262), and the plurality of nozzles (261) are connected to the annular groove (263); A plurality of aligned ash dropping holes (8) are respectively provided on the lower die fixing plate (24), the lower die pad plate (23) and the lower die frame plate (22) at positions corresponding to the annular groove (263) of the discharge plate (26), wherein the ash dropping holes (8) are annular notches; The metal tray stamping forming die is arranged on a workbench (6); the self-cleaning circulation device comprises an ash hopper (31), a high-pressure circulation pump (32), a circulation water tank (33), a circulation pipeline (34) and a filter screen (35); the ash hopper (31) is installed on the bottom surface of the lower mold frame plate (22) and covers a plurality of ash holes (8) on the lower mold frame plate (22); an ash discharge port is provided on the workbench (6); the ash hopper (31) passes through the ash discharge port of the workbench (6); a material dropping slope (37) and a discharge slope (38) are arranged below the ash discharge port of the workbench (6); a filter grille (39) is arranged at one end of the material dropping slope (37) close to the discharge slope (38); a waste collection box (7) is arranged at the outlet of the material dropping slope (37); and a circulation water tank (33) is arranged at the outlet of the discharge slope (38); A plurality of partitions are arranged in the circulating water tank (33), and flow openings (331) are alternately staggered on the upper side of each partition; the high-pressure circulating pump (32) is installed at the end angle position of the circulating water tank (33) and is separated by a filter screen (35); one end of the circulating pipeline (34) is connected to the outlet of the high-pressure circulating pump (32), and the other end is connected to the spray cleaning inlet (264) of the discharge plate (26).

2. A metal tray stamping forming system with self-cleaning function according to claim 1, It is characterized in that The discharge plate (26) is provided with a cylindrical hole, and the plurality of through holes (265) are located on the inner side of the cylindrical hole; the annular groove (263) is located on the outer side of the cylindrical hole on the lower plane of the discharge plate (26); and the cover plate (262) is used to cover the annular groove (263).

3. A metal tray stamping forming system with self-cleaning function according to claim 1, It is characterized in that The upper mold assembly (1) comprises an upper mold frame plate (11), an upper mold pad (12) and an upper mold (13) are installed below the upper mold frame plate (11), the upper mold frame plate (11) is slidably connected to the mold frame guide column (21), and the upper mold (13) is slidably connected to the lower mold guide column (27).

4. A metal tray stamping forming system with self-cleaning function according to claim 3, It is characterized in that Sliding guide sleeves are provided at the connection points between the four corners of the upper mold frame plate (11) and the mold frame guide pillars (21), and sliding guide sleeves are also provided at the connection points between the four corners of the upper mold (13) and the lower mold guide pillars (27).

5. A metal tray stamping forming system with self-cleaning function according to claim 1, It is characterized in that A discharge spring (25) is installed on the lower die fixing plate (24), one end of the discharge spring (25) abuts against the lower die fixing plate (24), and the other end abuts against the discharge plate (26).

6. A metal tray stamping forming system with self-cleaning function according to claim 5, It is characterized in that An ash collecting ring (29) is provided above the lower die fixing plate (24), and the ash dropping hole (8) is located inside the ash collecting ring (29).

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