A stamping forming device for automobile sheet metal parts

Abstract

The present invention belongs to the technical field of stamping and forming devices, and discloses a stamping and forming device for automobile sheet metal parts, comprising a bottom plate and a top plate, the bottom plate and the top plate are fixed by guide columns, a lower mold is fixedly arranged on the bottom plate, an electric push rod is fixedly arranged on the top plate, a mounting plate is fixedly arranged on the output end of the electric push rod, an upper mold is fixedly arranged on the mounting plate, the upper mold is used in coordination with the lower mold, a storage tank, a connecting channel, a plurality of shunt channels, a plurality of liquid collecting tanks and a plurality of spray holes equipped with atomizing nozzles are provided inside the upper mold, wherein a connecting hole is provided inside the storage tank, the connecting hole is connected to a storage box fixedly arranged on the top plate through a conduit, and the storage tank is connected to the plurality of shunt channels through the connecting channel; the present invention can spray liquid onto the upper surface of the automobile sheet metal part through the coordination of the provided storage box, spray holes, etc., thereby reducing the possibility of adhesion between the automobile sheet metal part and the upper mold.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping forming devices, and in particular relates to a stamping forming device for automobile sheet metal parts. Background Art

[0002] In the process of automobile sheet metal processing, it is sometimes necessary to punch plate-shaped materials into curved automobile sheet metal parts by stamping. The usual way is to place the material inside the lower die, and then drive the upper die to move by the lifting equipment, and punch the material in the lower die by the upper die. The stamped material can form a curved automobile sheet metal part. However, during the stamping process, the upper surface of the material is easily bonded to the upper die, which easily leads to the generation of waste. Some methods spray the release agent manually, which will undoubtedly increase the labor intensity of the staff. Therefore, it is necessary to provide an automobile sheet metal stamping forming device that can solve the above problems. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a stamping and forming device for automobile sheet metal parts, which effectively solves the problems raised by the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stamping and forming device for automobile sheet metal parts, comprising a bottom plate and a top plate, the bottom plate and the top plate are fixed by a guide column, a lower die is fixedly arranged on the bottom plate, an electric push rod is fixedly arranged on the top plate, a mounting plate is fixedly arranged on the output end of the electric push rod, an upper die is fixedly arranged on the mounting plate, the upper die is used in conjunction with the lower die, a storage tank, a connecting channel, a plurality of diversion channels, a plurality of liquid collecting tanks and a plurality of spray holes equipped with atomizing nozzles are provided inside the upper die, wherein a connecting hole is provided inside the storage tank, the connecting hole is connected to a storage box fixedly arranged on the top plate through a conduit, and the storage tank is connected through the connecting channel It is connected with multiple diversion channels, which are connected with corresponding spray holes through corresponding liquid collecting tanks, and one-way valves are fixedly arranged inside the connecting holes and inside the connecting channels. A rod hole is also provided inside the upper mold, which is located at the center of the upper mold and is connected with the storage tank. A rod body is slidably arranged inside the rod hole, a piston is fixedly arranged on the top of the rod body, a telescopic spring is arranged above the piston, and the piston and the telescopic spring are movably arranged inside the storage tank. A positioning plate is fixedly arranged at the bottom end of the rod body, and an upper through hole, an inner cavity and a lower through hole are respectively provided inside the rod body, the upper through hole is connected with the lower through hole through the inner cavity, and a breathable valve is fixedly arranged inside the lower through hole.

[0005] Preferably, a discharge groove and a shaping groove are formed on the lower mold, the shaping groove is located below the discharge groove and connected thereto, an inner groove matching the shaping groove is formed at the bottom end of the upper mold, and the positioning plate is slidably fitted with the inner groove.

[0006] Preferably, guide rings are fixedly provided at the corners of the mounting plate, and the guide rings are slidably matched with corresponding guide posts.

[0007] Preferably, an oil storage tank, a first channel, an oil pressure tank, a second channel, an annular groove and an oil filling port are formed inside the guide ring, wherein a sealing plug is fixedly provided inside the oil filling port and is connected with the oil storage tank, the oil storage tank is located at the top of the guide ring, the oil storage tank is connected with the oil pressure tank through the first channel, the oil pressure tank is located at the bottom of the guide ring, the bottom notch of the oil pressure tank is connected with the outside, the oil pressure tank is connected with the annular groove through the second channel, and the annular groove is located on the inner wall of the guide ring; wherein a one-way part is movably provided inside the first channel, a support spring and a sliding part are movably provided inside the oil pressure tank, and the sliding part is located below the support spring.

[0008] Preferably, a central hole is formed in the first channel, and the radius of the central hole is larger than the radius of the first channel. The one-way member includes a sliding plate and a sealing plate which are integrally connected. The sealing plate is located above the sliding plate, and the radius of the sealing plate is larger than the radius of the first channel. The sliding plate is slidably matched with the central hole, and the sealing plate is used in conjunction with the first channel.

[0009] Preferably, the sliding member includes an upper ring body, a middle ring body and a lower ring body which are connected as a whole from top to bottom, wherein the upper ring body is slidably arranged inside the oil pressure groove, the middle ring body is slidably matched with the groove of the oil pressure groove, and the lower ring body is slidably matched with the guide column.

[0010] Preferably, air holes are evenly formed on one end of the middle ring body close to the lower ring body, and the air holes are distributed along the circumference of the middle ring body.

[0011] Preferably, a cooling ring is further provided inside the oil storage tank. The cooling ring is a hollow structure. A liquid inlet pipe and a liquid outlet pipe are fixedly provided on the cooling ring respectively. A cooling box and a pump body are fixedly provided on the top plate. One end of the pump body is fixedly connected to the cooling box, and the other end of the pump body is fixedly connected to the liquid inlet pipe. The liquid inlet pipe is connected to the liquid outlet pipe through the cooling ring, and the liquid outlet pipe is fixedly connected to the cooling box; and a heat exchange device is fixedly provided on the cooling box.

[0012] Preferably, a scraper member is provided inside the cooling ring, and the scraper member includes an outer annular scraper and an inner annular scraper. The outer annular scraper is fixed to the inner annular scraper by a plurality of floating plates. A guide rod is provided in the guide hole on the floating plate for relative sliding. The guide rod is fixed inside the cooling ring, and one of the floating plates is located directly below the liquid inlet pipe.

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

[0014] 1) Through the coordination of the storage box, storage tank, connecting channel, diversion channel, spray hole, etc., when the upper mold and the lower mold are docked, the liquid in the storage tank can be sprayed out through the spray hole through the piston, and the liquid can be sprayed onto the upper surface of the automobile sheet metal part, thereby reducing the possibility of adhesion between the automobile sheet metal part and the upper mold; at the same time, during the lowering process of the upper mold, the positioning plate can improve the stability of the automobile sheet metal part during stamping, and when the upper mold and the lower mold are separated, the positioning plate can further reduce the possibility of adhesion between the upper mold and the automobile sheet metal part;

[0015] 2) Through the cooperation of the upper through hole, the inner cavity and the lower through hole, on the one hand, the residual liquid in the air can be attached to the surface of the rod body during the liquid spraying, which plays a role in lubricating the rod body; on the other hand, the hot air in the storage tank can be better separated from the outside world to play a role in heat dissipation;

[0016] 3) Through the cooperation of the sliding member, the oil storage tank, the first channel and the second channel, when the lubrication effect of the guide ring is reduced, the lubricating oil in the oil storage tank can be transferred to the inside of the annular groove through the sliding member, so as to lubricate the guide ring and the guide column, and the lubricating oil in the oil storage tank can also cool the guide ring;

[0017] 4) Through the cooperation of the pump body, cooling box and cooling ring, the lubricating oil in the oil storage tank can be kept at a low temperature through water circulation to ensure the cooling effect of the lubricating oil on the guide ring;

[0018] 5) Through the cooperation of the floating plate, the outer annular scraper and the inner annular scraper, the scale on the inner wall of the cooling ring can be cleaned, thereby ensuring the cooling effect of the water flow on the lubricating oil in the oil storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a structural schematic diagram of a stamping and forming device for automobile sheet metal parts of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the upper mold of the present invention;

[0023] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide ring of the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of the guide ring of the present invention;

[0026] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle;

[0027] Figure 7 For the present invention Figure 5 The enlarged structural diagram at C in the middle;

[0028] Figure 8 It is a schematic diagram of the sealing plate structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the installation structure of the outer annular scraper and the inner annular scraper of the present invention;

[0030] In the figure: 1, bottom plate; 2, top plate; 3, guide column; 4, lower die; 5, electric push rod; 6, mounting plate; 7, upper die; 8, storage tank; 9, connecting channel; 10, diversion channel; 11, collecting tank; 12, spray hole; 13, connecting hole; 14, one-way valve; 15, rod hole; 16, rod body; 17, piston; 18, telescopic spring; 19, positioning plate; 20, upper through hole; 21, inner cavity; 22, lower through hole; 23, discharge trough; 24, shaping groove; 25, inner groove; 26, Guide ring; 27, oil storage tank; 28, first channel; 29, oil pressure tank; 30, second channel; 31, annular groove; 32, support spring; 33, middle hole; 34, sliding plate; 35, sealing plate; 36, upper ring body; 37, middle ring body; 38, lower ring body; 39, air vent; 40, cooling ring; 41, liquid inlet pipe; 42, liquid outlet pipe; 43, cooling box; 44, pump body; 45, outer annular scraper; 46, inner annular scraper; 47, floating plate; 48, guide rod; 49, storage box. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] Depend on Figure 1-9The present invention relates to a stamping and forming device for automobile sheet metal parts, comprising a bottom plate 1 and a top plate 2, the bottom plate 1 and the top plate 2 are fixed by a guide column 3, a lower die 4 is fixedly arranged on the bottom plate 1, an electric push rod 5 is fixedly arranged on the top plate 2, a mounting plate 6 is fixedly arranged on the output end of the electric push rod 5, an upper die 7 is fixedly arranged on the mounting plate 6, and the upper die 7 is used in conjunction with the lower die 4; a discharge groove 23 and a shaping groove 24 are formed on the lower die 4, the shaping groove 24 is located below the discharge groove 23 and is connected thereto, an inner groove 25 matching the shaping groove 24 is provided at the bottom end of the upper die 7, and a positioning plate 19 is slidably matched with the inner groove 25; guide rings 26 are fixedly arranged at the corners of the mounting plate 6, and the guide rings 26 are slidably matched with the corresponding guide columns 3;

[0033] With such a design, when in use, the automobile sheet metal part is placed inside the discharge trough 23 in the lower mold 4, and then the upper mold 7 on the mounting plate 6 is driven to move in the vertical direction by the electric push rod 5. After the upper mold 7 falls, the inner groove 25 thereon cooperates with the shaping groove 24 to complete the stamping process of the automobile sheet metal part, so that the flat plate is stamped into an S-shaped automobile sheet metal part; wherein the guide ring 26 is provided to improve the stability of the upper mold 7 during movement.

[0034] Considering that the automobile sheet metal parts may be adhered to the lower surface of the upper mold 7 during the stamping process, a storage tank 8, a connecting channel 9, a plurality of shunt channels 10, a plurality of liquid collecting tanks 11 and a plurality of spray holes 12 equipped with atomizing nozzles are provided inside the upper mold 7, wherein a connecting hole 13 is provided inside the storage tank 8, and the connecting hole 13 is connected to a storage box 49 fixedly arranged on the top plate 2 through a conduit, the storage tank 8 is connected to the plurality of shunt channels 10 through the connecting channel 9, and the shunt channel 10 is connected to the corresponding spray hole 12 through the corresponding liquid collecting tank 11, and the interior of the connecting hole 13 and the interior of the connecting channel 9 are both solid. A one-way valve 14 is fixedly provided, a rod hole 15 is also provided inside the upper mold 7, the rod hole 15 is located at the center of the upper mold 7 and is connected to the storage tank 8, a rod body 16 is slidably provided inside the rod hole 15, a piston 17 is fixedly provided at the top of the rod body 16, a telescopic spring 18 is provided above the piston 17, the piston 17 and the telescopic spring 18 are both movably provided inside the storage tank 8, a positioning plate 19 is fixedly provided at the bottom end of the rod body 16, an upper through hole 20, an inner cavity 21 and a lower through hole 22 are respectively provided inside the rod body 16, the upper through hole 20 is connected to the lower through hole 22 through the inner cavity 21, and a vent valve is fixedly provided inside the lower through hole 22;

[0035] With this design, when in use, the storage tank 8 is filled with liquid, which can be a release agent or lubricating oil, etc. When the upper mold 7 is docked with the lower mold 4, the positioning plate 19 is first contacted with the lower mold 4 under the action of the telescopic spring 18. Under the reaction of the force, the positioning plate 19 drives the piston 17 to move through the rod body 16, and the liquid in the storage tank 8 is squeezed by the piston 17, so that the liquid in the storage tank 8 enters the interior of the spray hole 12 through the connecting channel 9, the diversion channel 10, and the liquid collecting tank 11, and the liquid is sprayed on the upper surface of the automobile sheet metal through the spray hole 12, thereby reducing the possibility of adhesion between the automobile sheet metal and the upper mold 7. At the same time, the air pressure in the space between the bottom end of the piston 17 and the storage tank 8 becomes smaller to form a negative pressure. At this time, the upper through hole 20 enters the interior of the storage tank 8, and the negative pressure can be used to The surrounding cold air is sucked in through the upper through hole 20, the inner cavity 21 and the lower through hole 22, so that the residual liquid in the air adheres to the surface of the rod body 16, thereby lubricating the rod body 16 and reducing the heat on the rod body 16; when the upper mold 7 is separated from the lower mold 4, under the action of the telescopic spring 18, the piston 17 moves downward inside the storage tank 8. At this time, the air pressure in the space between the top end of the piston 17 and the storage tank 8 becomes smaller to form a negative pressure, and the liquid in the storage box 49 is sucked in through the negative pressure to facilitate the next liquid spraying operation; at the same time, the air pressure in the space between the bottom end of the piston 17 and the storage tank 8 increases. Under the action of pressure, the hot air in the space between the bottom end of the piston 17 and the storage tank 8 is discharged through the upper through hole 20, the inner cavity 21 and the lower through hole 22 in turn, thereby playing a role in heat dissipation.

[0036] Considering that in actual use, since the guide ring 26 needs to continuously move up and down along the guide column 3, and the length of the guide ring 26 is limited, the temperature of the guide ring 26 will rise sharply after a long period of use, and the lubricating oil will continue to decrease, thereby affecting the use effect of the guide ring 26, an oil storage tank 27, a first channel 28, an oil pressure tank 29, a second channel 30, an annular groove 31 and an oil filling port are formed inside the guide ring 26, wherein a sealing plug is fixedly provided inside the oil filling port and is connected with the guide ring 26. The oil storage tank 27 is connected, and the oil storage tank 27 is located at the top of the guide ring 26. The oil storage tank 27 is connected to the oil pressure tank 29 through the first channel 28. The oil pressure tank 29 is located at the bottom of the guide ring 26. The bottom notch of the oil pressure tank 29 is connected to the outside. The oil pressure tank 29 is connected to the annular groove 31 through the second channel 30. The annular groove 31 is located on the inner wall of the guide ring 26; wherein a one-way part is movably provided inside the first channel 28, and a support spring 32 and a sliding part are movably provided inside the oil pressure tank 29, and the sliding part is located below the support spring 32;

[0037] With such a design, when in use, lubricating oil can be injected into the interior of the oil storage tank 27 through the oil filling port. When the lubrication effect between the guide ring 26 and the guide column 3 is poor, when the guide ring 26 moves downward relative to the guide column 3, due to the large friction between the inner side of the sliding member and the guide column 3, the sliding member will squeeze the support spring 32 under the action of friction, and the sliding member will allow the lubricating oil in the oil pressure groove 29 to enter the interior of the annular groove 31 through the second channel 30, so that the lubricating oil is stored in the interior of the annular groove 31 and then contacts the guide column 3, thereby achieving a lubricating effect. At the same time, after the lubrication is completed, the friction between the sliding member and the guide column 3 is reduced, and under the action of the support spring 32, the sliding member moves downward in the oil pressure groove 29, so that negative pressure is formed in the oil pressure groove 29. Under the action of the negative pressure, the lubricating oil in the oil storage tank 27 enters the interior of the oil pressure groove 29 through the first channel 28, wherein both the first channel 28 and the second channel 30 are fixedly provided with a one-way valve.

[0038] Specifically, a middle hole 33 is formed in the first channel 28, and the radius of the middle hole 33 is greater than the radius of the first channel 28. The one-way member includes a sliding plate 34 and a sealing plate 35 which are connected as one body. The sealing plate 35 is located above the sliding plate 34, and the radius of the sealing plate 35 is greater than the radius of the first channel 28. The sliding plate 34 is slidably matched with the middle hole 33, and the sealing plate 35 is used in conjunction with the first channel 28.

[0039] This design enables the lubricating oil in the oil pressure groove 29 to enter the interior of the oil pressure groove 29 in a one-way manner, and a one-way valve may also be used instead.

[0040] The sliding member includes an upper ring body 36, a middle ring body 37 and a lower ring body 38 which are connected as one from top to bottom, wherein the upper ring body 36 is slidably arranged inside the oil pressure groove 29, the middle ring body 37 is slidably matched with the notch of the oil pressure groove 29, and the lower ring body 38 is slidably matched with the guide column 3;

[0041] The middle ring body 37 is provided with air holes 39 at one end close to the lower ring body 38, and the air holes 39 are distributed along the circumference of the middle ring body 37;

[0042] With such a design, since heat will accumulate in the space between the middle ring body 37 and the guide column 3 , the air holes 39 can be used to dissipate heat.

[0043] Considering that the temperature in the oil storage tank 27 will rise after long-term use, a cooling ring 40 is further provided inside the oil storage tank 27. The cooling ring 40 is a hollow structure. A liquid inlet pipe 41 and a liquid outlet pipe 42 are fixedly provided on the cooling ring 40. A cooling box 43 and a pump body 44 are fixedly provided on the top plate 2. One end of the pump body 44 is fixedly connected to the cooling box 43, and the other end of the pump body 44 is fixedly connected to the liquid inlet pipe 41. The liquid inlet pipe 41 is connected to the liquid outlet pipe 42 through the cooling ring 40, and the liquid outlet pipe 42 is fixedly connected to the cooling box 43; and a heat exchange device is fixedly provided on the cooling box 43;

[0044] In this design, the water in the cooling box 43 is injected into the interior of the cooling ring 40 through the liquid inlet pipe 41 by the pump body 44, and then returns to the interior of the cooling box 43 through the liquid outlet pipe 42, so that the temperature in the oil storage tank 27 is relatively low, so as to cool the guide ring 26; after long-term use, the cooling box 43 can be subjected to heat exchange treatment by a heat exchange device to ensure that the temperature of the water in the cooling box 43 is relatively low.

[0045] Considering that scale will form on the inner wall of the cooling ring 40 after long-term use, the existence of scale will affect the cooling efficiency of the cooling ring 40 on the oil storage tank 27, so a scraper member is provided inside the cooling ring 40, and the scraper member includes an outer annular scraper 45 and an inner annular scraper 46. The outer annular scraper 45 is fixed to the inner annular scraper 46 through a plurality of floating plates 47. A guide rod 48 is relatively slidably provided in a guide hole on the floating plate 47. The guide rod 48 is fixedly provided inside the cooling ring 40, and one of the floating plates 47 is located directly below the liquid inlet pipe 41.

[0046] With such a design, when the incoming water flow impacts the floating plate 47, the floating plate 47 will move downward, and the floating plate 47 can drive the outer annular scraper 45 and the inner annular scraper 46 to clean the scale on the inner walls on both sides of the cooling ring 40 respectively. When the water flow stops impacting, under the action of the buoyancy of the water, the floating plate 47 moves upward and can drive the outer annular scraper 45 and the inner annular scraper 46 to clean the scale on the inner walls on both sides of the cooling ring 40 respectively. The cleaned scale can be removed by setting a corresponding filter. The filter is a conventional setting, so it will not be described in detail.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping and forming device for automobile sheet metal parts, comprising a bottom plate (1) and a top plate (2), wherein the bottom plate (1) and the top plate (2) are fixed by a guide column (3), a lower die (4) is fixedly arranged on the bottom plate (1), an electric push rod (5) is fixedly arranged on the top plate (2), a mounting plate (6) is fixedly arranged on the output end of the electric push rod (5), an upper die (7) is fixedly arranged on the mounting plate (6), and the upper die (7) is used in conjunction with the lower die (4), characterized in that: The upper mold (7) is provided with a storage tank (8), a connecting channel (9), a plurality of flow-dividing channels (10), a plurality of liquid collecting grooves (11) and a plurality of spray holes (12) equipped with atomizing nozzles, wherein a connecting hole (13) is provided inside the storage tank (8), the connecting hole (13) is connected to a storage box (49) fixedly arranged on the top plate (2) through a conduit, the storage tank (8) is connected to a plurality of flow-dividing channels (10) through the connecting channel (9), the flow-dividing channels (10) are connected to corresponding spray holes (12) through corresponding liquid collecting grooves (11), and a one-way valve (14) is fixedly arranged inside the connecting hole (13) and the connecting channel (9), and a rod is also provided inside the upper mold (7). The rod hole (15) is located at the center of the upper mold (7) and is connected to the storage tank (8). A rod body (16) is slidably arranged inside the rod hole (15). A piston (17) is fixedly arranged at the top of the rod body (16). A telescopic spring (18) is arranged above the piston (17). The piston (17) and the telescopic spring (18) are both movably arranged inside the storage tank (8). A positioning plate (19) is fixedly arranged at the bottom of the rod body (16). An upper through hole (20), an inner cavity (21) and a lower through hole (22) are respectively opened inside the rod body (16). The upper through hole (20) is connected to the lower through hole (22) through the inner cavity (21). A vent valve is fixedly arranged inside the lower through hole (22); Guide rings (26) are fixedly provided at the corners of the mounting plate (6), and the guide rings (26) are slidably matched with the corresponding guide posts (3); The guide ring (26) is internally formed with an oil storage tank (27), a first channel (28), an oil pressure tank (29), a second channel (30), an annular groove (31) and an oil filling port, wherein a sealing plug is fixedly arranged inside the oil filling port and is communicated with the oil storage tank (27); the oil storage tank (27) is located at the top of the guide ring (26); the oil storage tank (27) is communicated with the oil pressure tank (29) through the first channel (28); the oil pressure tank (29) is located at the bottom of the guide ring (26); the bottom notch of the oil pressure tank (29) is communicated with the outside; the oil pressure tank (29) is communicated with the annular groove (31) through the second channel (30); the annular groove (31) is located on the inner wall of the guide ring (26); wherein a one-way member is movably arranged inside the first channel (28); a support spring (32) and a sliding member are movably arranged inside the oil pressure tank (29); the sliding member is located below the support spring (32); A central hole (33) is formed in the first channel (28), the radius of the central hole (33) is greater than the radius of the first channel (28), the one-way member comprises a sliding plate (34) and a sealing plate (35) connected as one body, the sealing plate (35) is located above the sliding plate (34), the radius of the sealing plate (35) is greater than the radius of the first channel (28), the sliding plate (34) and the central hole (33) are slidably matched, and the sealing plate (35) and the first channel (28) are used in combination; The sliding member comprises an upper ring body (36), a middle ring body (37) and a lower ring body (38) which are connected as a whole in sequence from top to bottom, wherein the upper ring body (36) is slidably arranged inside the oil pressure groove (29), the middle ring body (37) is slidably matched with the notch of the oil pressure groove (29), and the lower ring body (38) is slidably matched with the guide column (3).

2. The stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: The lower mold (4) is formed with a material discharge groove (23) and a shaping groove (24), the shaping groove (24) is located below the material discharge groove (23) and is connected thereto, the bottom end of the upper mold (7) is provided with an inner groove (25) matching the shaping groove (24), and the positioning plate (19) is slidably matched with the inner groove (25).

3. The stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: One end of the middle ring body (37) close to the lower ring body (38) is evenly provided with air holes (39), and the air holes (39) are distributed along the circumference of the middle ring body (37).

4. The stamping and forming device for automobile sheet metal parts according to claim 1, characterized in that: A cooling ring (40) is also provided inside the oil storage tank (27). The cooling ring (40) is a hollow structure. A liquid inlet pipe (41) and a liquid outlet pipe (42) are fixedly provided on the cooling ring (40). A cooling box (43) and a pump body (44) are fixedly provided on the top plate (2). One end of the pump body (44) is fixedly connected to the cooling box (43), and the other end of the pump body (44) is fixedly connected to the liquid inlet pipe (41). The liquid inlet pipe (41) is connected to the liquid outlet pipe (42) through the cooling ring (40), and the liquid outlet pipe (42) is fixedly connected to the cooling box (43). A heat exchange device is fixedly provided on the cooling box (43).

5. The stamping and forming device for automobile sheet metal parts according to claim 4, characterized in that: A scraper member is arranged inside the cooling ring (40), and the scraper member comprises an outer annular scraper (45) and an inner annular scraper (46). The outer annular scraper (45) is fixed to the inner annular scraper (46) via a plurality of floating plates (47). A guide rod (48) is relatively slidably arranged in a guide hole on the floating plate (47). The guide rod (48) is fixedly arranged inside the cooling ring (40), and one of the floating plates (47) is located directly below the liquid inlet pipe (41).

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