In-die oil feeding, cooling and lubricating structure of stamping die

Abstract

The invention provides an in-die oil feeding, cooling and lubricating structure of a stamping die, and relates to the field of stamping dies. The in-die oil feeding, cooling and lubricating structure of the stamping die comprises a female die and a box body installed on the outer side of the female die, the box body is used for containing lubricating oil, a groove used for conducting punch forming on a workpiece is formed in the female die, a notch used for discharging oil is formed in the bottom of the female die, and a cooling device used for cooling the lubricating oil is installed on one side of the box body. According to the in-die oil feeding, cooling and lubricating structure of the stamping die, lubricating oil in the box body circularly flows and is in a low-temperature state, in the stamping process, descending of the filling plate can enable the spray head to rotate, and due to the fact that the low-temperature lubricating oil is directly and sufficiently sprayed to the inner wall of the female die, a workpiece material and the bottom of the filling plate, the sufficient lubricating effect can be achieved; due to the fact that the notch is formed in the bottom of the female die, finally sprayed lubricating oil converges into the box body through the notch to form circulation, and waste of the lubricating oil can be prevented.

Description

Technical Field

[0001] The invention relates to the field of stamping dies, in particular to an in-die oil supply cooling and lubrication structure for a stamping die. Background Art

[0002] A stamping die is a special process equipment used to process materials (metal or non-metal) into parts (or semi-finished products) during stamping. The stamping die includes an upper die part and a lower die part. The upper die part includes an upper die base, a punch and a discharge device, and the lower die part includes a lower die base, a die and a positioning device. During high-speed continuous stamping, key components of the die, such as the punch and die, frequently contact and separate with the stamping material at high speed. The friction generated will cause a large amount of heat to be generated on the die surface, and the friction will quickly wear the working surface of the die. Therefore, an oil cooling and lubrication structure is required to be set inside the stamping die. The oil cooling and lubrication structure can form a layer of lubricating oil film between the die and the material. This oil film can transform the direct contact between the die and the material into internal friction between the oil film molecules, thereby greatly reducing the friction.

[0003] The traditional oil-feeding cooling and lubrication structure sprays lubricating oil onto the workpiece surface in the form of a spray through a nozzle. In the case of grooves with deep grooves, inner angles, and twists, in order to cover the deep grooves, inner angles, and twists as much as possible with paint, operators often increase the spraying amount. However, this can easily lead to over-spraying in other parts, resulting in a waste of paint and increased production costs. Excessive paint accumulation may also affect the dimensional accuracy and appearance quality of the product. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an oil supply cooling and lubrication structure in a stamping die, which can not only cool down the die but also prevent the waste of lubricating oil.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a stamping die in-die oil cooling and lubrication structure, comprising a die and a box installed on the outside of the die, the box is used to load lubricating oil, a groove for stamping and forming a workpiece is provided in the die, a notch for draining oil is provided at the bottom of the die, a cooling device for cooling the lubricating oil is installed on one side of the box, the cooling device comprises a T-shaped main oil pipe and two L-shaped oil distribution pipes, the main oil pipe is connected to the oil distribution pipes, one end of each oil distribution pipe is connected to a short pipe, the other end of the short pipe is connected to a nozzle for spraying oil to the die, a supporting mechanism for reciprocating movement is installed inside the main oil pipe, and a bracket is installed at one end of the supporting mechanism;

[0006] A filling plate for fitting the gap is installed on the bracket, and the filling plate is adapted to the slot of the gap. There are two rotating nozzles, and the initial spraying direction of the nozzles is downward. An oil supply pipe for supplying oil is installed at one end of the nozzle. The oil supply pipe is connected to the cooling device, and the lubricating oil circulates through the cooling device.

[0007] Preferably, sealing plates matching the concave mold are installed on both sides of the concave mold, and the sealing plates are integrally formed with the concave mold.

[0008] Preferably, the bracket includes a transverse plate, two rotating axes A, a fixed column, a connecting rod and a fixed block. The fixed column is installed at the upper end of the supporting mechanism and is fixedly connected to the transverse plate. The two rotating axes A are rotatably connected to the transverse plate and are respectively fixedly connected to the two nozzles. The connecting rod is fixedly connected to the fixed block. The connecting rod passes through the transverse plate and is slidably connected to the transverse plate. The fixed block is fixedly connected to the filling plate.

[0009] Preferably, the curvature of the filling plate matches the curvature of the bottom of the die, and a plurality of through holes are provided inside the filling plate.

[0010] Preferably, a fixing part A is fixedly connected to the outer surface of the fixing column, a spring A is fixedly installed on one end of the fixing part A, a fixing part B is fixedly connected to one end of the spring A, a connecting frame is fixedly connected to the filling plate, racks are fixedly connected to both ends of the connecting frame, gears are meshedly connected to the outer surfaces of the two gears, a rotating shaft B is fixedly connected to the inside of the two gears, the two rotating shafts B are respectively fixedly connected to the two nozzles, and are respectively at the same axis as the two rotating shafts A.

[0011] Preferably, the bottom of the connecting frame is arc-shaped, and one end of the fixing column is matched with the arc surface of the connecting frame.

[0012] Preferably, the supporting mechanism includes a polygonal insert rod, two fixed plates, a piston and a spring B. The insert rod is slidably connected to the main oil pipe and fixedly connected to the piston. The piston is slidably connected to the main oil pipe. The two fixed plates are fixedly connected to the insert rod and the main oil pipe respectively. The two ends of the spring B are fixedly connected to the two fixed plates respectively.

[0013] Preferably, a one-way valve A is installed inside each of the short pipes, the outer surface of the main oil pipe is connected to an oil inlet pipe, and a one-way valve B is installed inside the oil inlet pipe.

[0014] Preferably, the cooling device also includes a heat exchanger, a water pump, a water suction pipe, and two water outlet pipes. One end of the water suction pipe is connected to the casing, and the other end is connected to the water inlet end of the water pump. The water outlet end of the water pump is connected to one end of the heat exchanger through a water pipe. The two water outlet pipes are fixedly connected to the casing, and the two water outlet pipes are connected to the water outlet end of the heat exchanger. The two oil supply pipes are respectively connected to the two water outlet pipes.

[0015] Compared with the prior art, the present invention has the following beneficial effects: through the provided cooling device, the lubricating oil in the box body can circulate and be in a low-temperature state; through the provided nozzle, during the stamping process, the descending of the filling plate can cause the nozzle to rotate, which can not only spray the lubricating oil in a large area in the form of oil mist, but also cool the inner wall of the die; as the filling plate continues to descend, it can adapt to the slot of the notch and complete the forming work; since the low-temperature lubricating oil is directly and fully sprayed onto the inner wall of the die, the workpiece material and the bottom of the filling plate, it can play a role in full lubrication; since a notch is provided at the bottom of the die, the lubricating oil finally sprayed out will flow into the box body through the notch and form a cycle, and it can also prevent the lubricating oil from being wasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a cross-sectional view of the box body and the front view of the die of the present invention;

[0018] Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 4 It is a structural schematic diagram of the bracket and the filling plate of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the support mechanism of the present invention;

[0021] Figure 6 A cross-sectional view showing a schematic structural diagram of the support mechanism, the main oil pipe and the oil distribution pipe of the present invention;

[0022] Figure 7 This is a schematic diagram of the support structure of the present invention;

[0023] Figure 8 A sectional view of the front view of the concave mold of the present invention;

[0024] Fig. 9 It is a schematic diagram of the structure of the fixing member A, the spring A and the oil inlet pipe of the present invention;

[0025] Fig.10 It is a cross-sectional view of the front view of the connecting frame and the fixing column of the present invention.

[0026] In the figure: 1. die; 2. housing; 3. notch; 4. cooling device; 401. heat exchanger; 402. water pump; 403. water suction pipe; 404. water outlet pipe; 405. main oil pipe; 5. oil distribution pipe; 6. short pipe; 7. nozzle; 8. supporting mechanism; 801. plug rod; 802. fixing plate; 803. piston; 804. spring B; 9. bracket; 901. cross plate; 902. rotating shaft A; 903. fixing column; 904. connecting rod; 905. fixing block; 10. filling plate; 11. nozzle; 12. oil supply pipe; 13. sealing plate; 14. through hole; 15. fixing part A; 16. spring A; 17. connecting frame; 18. rack; 19. gear; 20. rotating shaft B; 21. oil inlet pipe; 22. fixing part B. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] like Figure 1-Figure 10 As shown, a stamping die in-die oil supply cooling and lubrication structure comprises a die 1 and a box body 2 installed on the outside of the die 1, the box body 2 is fixedly connected to the die 1, and sealing plates 13 adapted thereto are installed on both sides of the die 1, the sealing plates 13 and the die 1 are integrally formed, the upper surface of the sealing plate 13 is planar, and its bottom is adapted to the groove, the sealing plate 13 plays a role of blocking the lubricating oil in the groove to prevent the lubricating oil in the groove from flowing out, the box body 2 is used to load the lubricating oil, the die 1 is provided with a groove for stamping the workpiece, the bottom of the die 1 is provided with a notch 3 for draining oil, a cooling device 4 for cooling the lubricating oil is installed on one side of the box body 2, the cooling device 4 comprises a T-shaped main oil pipe 405 and two L-shaped oil distribution pipes 5, the main oil pipe 405 and the oil distribution pipes 5 are both located in the box body 2 The depth of the lubricating oil in the box body 2 does not exceed the height of the main oil pipe 405. The upper end of the main oil pipe 405 is sealed. The main oil pipe 405 is connected to the oil distribution pipe 5. One end of each oil distribution pipe 5 is connected to a short pipe 6. A one-way valve A is installed inside each short pipe 6. The outer surface of the main oil pipe 405 is connected to the oil inlet pipe 21. A one-way valve B is installed inside the oil inlet pipe 21. When the piston 803 rises, the main oil pipe 405 is in a negative pressure state, the one-way valve A is closed, and the one-way valve B is opened, and the lubricating oil in the box body 2 enters the main oil pipe 405. When the piston 803 descends, the main oil pipe 405 is in a pressurized state, the one-way valve B is closed, and the one-way valve A is opened. The lubricating oil in the main oil pipe 405 enters the oil distribution pipe 5 and the short pipe 6 in turn, and is sprayed from the nozzle 7 toward the die 1 to improve the cooling efficiency.

[0032] The cooling device 4 also includes a heat exchanger 401, a water pump 402, a water pumping pipe 403, and two water outlet pipes 404. One end of the water pumping pipe 403 is connected to the box body 2, and the other end is connected to the water inlet end of the water pump 402. The water outlet end of the water pump 402 is connected to one end of the heat exchanger 401 through a water pipe. The two water outlet pipes 404 are fixedly connected to the box body 2. The two water outlet pipes 404 are connected to the water outlet end of the heat exchanger 401. The two oil supply pipes 12 are respectively connected to the two water outlet pipes 404. The heat exchanger 401 uses the heat transfer between two fluids of different temperatures. For lubricating oil cooling, the lubricating oil is usually allowed to cool in the heat exchanger. The heat is transferred from the lubricating oil to the cooling medium, thereby reducing the temperature of the lubricating oil. For example, there are many parallel thin plates inside the plate heat exchanger 401, which separate the lubricating oil and the cooling medium on both sides of the thin plates. The heat exchanger 401 can be installed in the lubricating oil circulation loop. When the lubricating oil returns from the stamping die 1 to the box 2, it is cooled by the heat exchanger 401 and then pumped into the die 1. The temperature of the lubricating oil can be effectively controlled to ensure that it works within a suitable temperature range.

[0033] The other end of the short tube 6 is connected to a nozzle 7 for spraying oil to the die 1. A support mechanism 8 for reciprocating movement is installed inside the main oil pipe 405. The support mechanism 8 includes a polygonal plug rod 801, two fixing plates 802, a piston 803 and a spring B804. The plug rod 801 is slidably connected to the main oil pipe 405 and is fixedly connected to the piston 803. The piston 803 is slidably connected to the main oil pipe 405. The two fixing plates 802 are fixedly connected to the plug rod 801 and the main oil pipe 405 respectively. The two ends of the spring B804 are fixedly connected to the two fixing plates 802 respectively. When the filling plate 10 and the bracket 9 are lowered, the spring B804 starts to accumulate force. After the stamping is completed , the elastic force of the spring B804 is used to reset the bracket 9, and the workpiece can be automatically demoulded. The bracket 9 is installed at one end of the support mechanism 8. The bracket 9 includes a horizontal plate 901, two rotating shafts A902, a fixed column 903, a connecting rod 904 and a fixed block 905. The fixed column 903 is installed at the upper end of the support mechanism 8 and is fixedly connected to the horizontal plate 901. The two rotating shafts A902 are both rotatably connected to the horizontal plate 901 and are respectively fixedly connected to the two nozzles 11. The connecting rod 904 is fixedly connected to the fixed block 905. The connecting rod 904 passes through the horizontal plate 901 and is slidably connected to the horizontal plate 901. The fixed block 905 is fixedly connected to the filling plate 10. The bracket 9 can provide support for the nozzle 11, and is conducive to the stable rotation of the nozzle 11 around the axis of the rotating shaft A902. The outer surface of the fixed column 903 is fixedly connected to the fixing part A15, and one end of the fixing part A15 is fixedly installed with a spring A16. The spring A16 is in a static state. One end of the spring A16 is fixedly connected to the fixing part B22, and one end of the fixing part B22 is fixedly connected to the connecting frame 17. The connecting frame 17 is fixedly connected to the filling plate 10. Both ends of the connecting frame 17 are fixedly connected to the rack 18. The outer surfaces of the two gears 19 are meshed with the gears 19. The interiors of the two gears 19 are fixedly connected to the rotating shaft B20. The rotating shaft B20 is fixedly connected to the two nozzles 11 respectively, and is at the same axis as the two rotating shafts A902 respectively. When the filling plate 10 squeezes the connecting frame 17, the connecting frame 17 will drive the two racks 18 to move, and the two racks 18 will respectively drive the two gears 19 to rotate, thereby rotating the two rotating shafts B20, so that the two nozzles 11 can swing to increase the range of spraying lubricating oil. The bottom of the connecting frame 17 is arc-shaped, and one end of the fixed column 903 is adapted to the arc surface of the connecting frame 17. When the connecting frame 17 descends, it can contact with one end of the fixed column 903 through its arc surface, thereby being able to stably squeeze the fixed column 903 to descend.

[0034] A filling plate 10 for fitting the notch 3 is installed on the bracket 9, and the filling plate 10 is adapted to the slot of the notch 3, the curvature of the filling plate 10 is adapted to the curvature of the bottom of the die 1, and a plurality of through holes 14 are opened inside the filling plate 10. When the filling plate 10 is inserted into the slot of the notch 3, a completed groove is formed between the filling plate 10 and the die 1, which is beneficial to the stamping and forming of the workpiece. Two nozzles 11 are used for rotation, and the initial spraying direction of the nozzle 11 is downward. An oil supply pipe 12 for oil supply is installed at one end of the nozzle 11. The oil supply pipe 12 is configured as a hose. The oil supply pipe 12 is connected to the cooling device 4, and the lubricating oil circulates through the cooling device 4.

[0035] When in use, first place the workpiece material to be stamped on the die 1. It should be noted that the die 1 is a part of the structure of the stamping die. The stamping die includes an upper die part and a lower die part. The upper die part includes an upper die seat, a punch and a discharge device. The lower die part includes a lower die seat, a die 1 and a positioning device. The die is used to apply pressure to the material to cause the material to undergo plastic deformation or separation, thereby obtaining a processing method for parts of a desired shape and size. The core principle of the processing method is to utilize the strong pressure provided by a press such as a mechanical press or a hydraulic press to process the material through a stamping die installed on the press. The punch of the stamping die The die is the protruding part of the mold, which directly contacts the material and applies pressure during the stamping process. The die 1 of the stamping mold is a part with a groove, corresponding to the punch. During the stamping process, the material is punched into the cavity of the die 1 by the punch, thereby realizing the separation of the material. In forming molds such as bending molds and stretching molds, the cavity of the die 1 determines the outer contour shape of the part. The material is pressed or pulled into the cavity of the die 1 under the action of the punch, undergoing plastic deformation to form the desired shape. In this process, the punch and die 1 of the mold frequently contact and separate with the stamping material, and the friction generated will cause a large amount of heat to be generated on the mold surface.

[0036] Next, starting the water pump 402 can sequentially pass the lubricating oil in the box body 2 through the water suction pipe 403, the water pump 402, the water pipe heat exchanger 401 and the water outlet pipe 404, and inject the lubricating oil in the water outlet pipe 404 into the two water supply pipes. The lubricating oil enters the two nozzles 11 through the two water supply pipes respectively, and the lubricating oil is sprayed toward the inner wall of the die 1 through the nozzle 11. The nozzle 11 can be an atomizing nozzle 11, which can achieve the lubrication effect on the inner wall of the die 1 and increase the spraying range. By setting the filling Plate 10, when the material sinks into the die 1 during the stamping process, the material will contact the filling plate 10 and squeeze the filling plate 10 to drive the filling plate 10 down, the filling plate 10 drives the connecting frame 17 and the fixed block 905 to descend, the connecting frame 17 drives the fixing piece B22 to descend, when the fixing piece B22 descends, the spring A16 begins to compress, the two fixing blocks 905 respectively drive the two connecting rods 904 to descend, the two connecting rods 904 steadily descend along the cross plate 901, because the connecting rods 904 are fixed to the connecting frame 17, Therefore, when the connecting rod 904 can be stably lowered, the connecting frame 17 can also be stably lowered. When the connecting frame 17 is lowered, during the lowering process of the connecting frame 17, on the one hand, it will drive the two racks 18 to descend, and the two racks 18 will respectively drive the two gears 19 to rotate, thereby causing the two rotating shafts to rotate, so that the two nozzles 11 can swing to increase the range of spraying lubricating oil. On the other hand, the arc surface of the connecting frame 17 will contact one end of the fixed column 903, and drive the fixed column 903 to descend, and the bracket 9 will also descend. It should be noted that the elastic force of the spring B804 should be greater than the elastic force of the spring A16. Therefore, when the filling plate 10 is lowered, the supporting mechanism 8 will not act immediately, but only after the arc surface of the connecting frame 17 contacts one end of the fixed column 903, it will start to drive the insertion rod 801 of the supporting mechanism 8 to descend, so that the nozzle 11 can rotate first when the filling plate 10 is lowered, so as to facilitate the spraying of lubricating oil on the inner wall of the die 1, so that the nozzle 11 can be effectively oiled even if the die is working quickly and continuously.

[0037] Next, since the nozzle 11 is initially facing downward, when the nozzle 11 rotates, it can rotate with the axis of the rotation axis A902 as the center, and rotate to an upward position. At this time, the material has contacted the filling plate 10, which means that when the nozzle 11 sprays oil mist upward, the workpiece material can block the lubricating oil to prevent the lubricating oil from being sprayed to the outside and causing waste and pollution. By setting a plurality of through holes 14 at the filling plate 10, when the nozzle 11 rotates to spray oil mist, the coverage of the lubricating oil mist is increased, which can not only oil the inner wall of the groove, but also oil the filling plate 10 through the through holes 14, thereby preventing damage to components due to insufficient oil during a long-term die punching process; Fig.10As shown, when the connecting frame 17 descends to contact with the fixed column 903, the connecting frame 17 will drive the fixed column 903 to descend, the fixed column 903 will drive the insertion rod 801 to descend, the insertion rod 801 will drive the piston 803 to descend and compress the spring B804. The function of the spring B804 is that after the stamping is completed, the filling plate 10 and the piston 803 can be reset, so that in the continuous die stamping process, the filling plate 10 and the piston 803 can realize reciprocating movement.

[0038] Next, the heat exchanger 401 utilizes the heat transfer between two fluids of different temperatures. For lubricating oil cooling, the lubricating oil is usually allowed to flow in a pipe on one side of the heat exchanger 401, and a cooling medium, such as cold water or cold air, is on the other side. Heat is transferred from the lubricating oil to the cooling medium, thereby reducing the temperature of the lubricating oil. For example, there are many parallel thin plates inside the plate heat exchanger 401, which separate the lubricating oil and the cooling medium on both sides of the thin plates. The heat exchange efficiency is improved by increasing the contact area. The heat exchanger 401 can be installed in the lubricating oil circulation loop. When the lubricating oil returns from the stamping die 1 to the box 2, it is cooled by the heat exchanger 401 and then Pumping the lubricating oil into the die 1 can effectively control the temperature of the lubricating oil and ensure that it works within a suitable temperature range. The temperature in the box 2 should be kept low. When the heat exchanger 401 draws the lubricating oil in the box 2, it can cool the lubricating oil. The cooled lubricating oil is directly sprayed from the nozzle 11 through the oil supply pipe 12. Since the low-temperature lubricating oil is directly and fully sprayed onto the inner wall of the die 1, the workpiece material and the bottom of the filling plate 10, it can play a role in full lubrication. Since a notch 3 is provided at the bottom of the die 1, the lubricating oil sprayed out will eventually flow into the box 2 through the notch 3 and form a cycle, and it can also prevent the lubricating oil from being wasted.

[0039] Then, if Figure 8As shown, when the filling plate 10 moves into the slot of the notch 3, the filling plate 10 is matched with the concave die 1, so the two form a complete concave die 1, which is convenient for the forming operation of the workpiece. After the die is completed, under the action of spring A16 and spring B804, the whole is restored to the initial position. Due to the repeated die punching process, the piston 803 is in a reciprocating state. When the piston 803 rises, the main oil pipe 405 is in a negative pressure state, the one-way valve A in the short pipe 6 is closed, and the one-way valve B in the oil extraction pipe is opened. The lubricating oil in the box body 2 is pumped out. The oil pipe enters the main oil pipe 405. Conversely, when the piston 803 descends, the main oil pipe 405 is in a pressurized state, the one-way valve B is closed, and the one-way valve A is opened. The lubricating oil in the main oil pipe 405 enters the oil distribution pipe 5 and the short pipe 6 in turn, and is sprayed toward the die 1 from the nozzle 7. Because the lubricating oil in the box 2 is always in a low temperature state under the action of the heat exchanger 401, the lubricating oil when sprayed from the nozzle 7 can cool the outside of the die 1, and the lubricating oil sprayed from the nozzle 11 can cool the inner wall of the die 1 to improve the cooling efficiency.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0041] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0042] 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 die in-die oil cooling and lubrication structure, comprising a die (1) and a box (2) mounted outside the die (1), characterized in that: The box (2) is used to load lubricating oil, a groove for stamping and forming a workpiece is provided in the die (1), a notch (3) for draining oil is provided at the bottom of the die (1), a cooling device (4) for cooling the lubricating oil is installed on one side of the box (2), the cooling device (4) comprises a T-shaped main oil pipe (405) and two L-shaped oil distribution pipes (5), the main oil pipe (405) is connected to the oil distribution pipe (5), one end of each oil distribution pipe (5) is connected to a short pipe (6), the other end of the short pipe (6) is connected to a nozzle (7) for spraying oil to the die (1), a supporting mechanism (8) for reciprocating movement is installed inside the main oil pipe (405), and a bracket (9) is installed at one end of the supporting mechanism (8); A filling plate (10) for fitting the notch (3) is installed on the bracket (9), and the filling plate (10) is adapted to the slot of the notch (3). Two nozzles (11) are used for rotation, and the initial spraying direction of the nozzles (11) is downward. An oil supply pipe (12) for supplying oil is installed at one end of the nozzle (11), and the oil supply pipe (12) is connected to the cooling device (4), and the lubricating oil circulates through the cooling device (4).

2. The in-die oil supply cooling and lubrication structure of a stamping die according to claim 1, characterized in that: Sealing plates (13) adapted thereto are installed on both sides of the concave die (1), and the sealing plates (13) and the concave die (1) are integrally formed.

3. The stamping die in-die oil supply cooling and lubrication structure according to claim 1, characterized in that: The bracket (9) comprises a transverse plate (901), two rotating shafts A (902), a fixed column (903), a connecting rod (904) and a fixed block (905); the fixed column (903) is mounted on the upper end of the support mechanism (8) and is fixedly connected to the transverse plate (901); the two rotating shafts A (902) are both rotatably connected to the transverse plate (901) and are respectively fixedly connected to two nozzles (11); the connecting rod (904) is fixedly connected to the fixed block (905); the connecting rod (904) passes through the transverse plate (901) and is slidably connected to the transverse plate (901); and the fixed block (905) is fixedly connected to the filling plate (10).

4. The in-die oil supply cooling and lubrication structure of a stamping die according to claim 1, characterized in that: The curvature of the filling plate (10) matches the curvature of the bottom of the die (1), and a plurality of through holes (14) are provided inside the filling plate (10).

5. The in-die oil supply cooling and lubrication structure of a stamping die according to claim 3, characterized in that: The outer surface of the fixed column (903) is fixedly connected to a fixing member A (15), one end of the fixing member A (15) is fixedly installed with a spring A (16), one end of the spring A (16) is fixedly connected to a fixing member B (22), one end of the fixing member B (22) is fixedly connected to a connecting frame (17), the connecting frame (17) is fixedly connected to the filling plate (10), both ends of the connecting frame (17) are fixedly connected to racks (18), the outer surfaces of the two gears (19) are meshedly connected to the gears (19), the interiors of the two gears (19) are fixedly connected to a rotating shaft B (20), the two rotating shafts B (20) are respectively fixedly connected to the two nozzles (11), and are respectively located at the same axis as the two rotating shafts A (902).

6. The in-die oil supply cooling and lubrication structure of a stamping die according to claim 5, characterized in that: The bottom of the connecting frame (17) is in an arc shape, and one end of the fixing column (903) is adapted to the arc surface of the connecting frame (17).

7. The in-die oil supply cooling and lubrication structure of a stamping die according to claim 1, characterized in that: The support mechanism (8) comprises a polygonal insertion rod (801), two fixing plates (802), a piston (803) and a spring B (804); the insertion rod (801) is slidably connected to the main oil pipe (405) and fixedly connected to the piston (803); the piston (803) is slidably connected to the main oil pipe (405); the two fixing plates (802) are respectively fixedly connected to the insertion rod (801) and the main oil pipe (405); and the two ends of the spring B (804) are respectively fixedly connected to the two fixing plates (802).

8. The stamping die in-die oil supply cooling and lubrication structure according to claim 1, characterized in that: A one-way valve A is installed inside each short tube (6), the outer surface of the main oil pipe (405) is connected to an oil inlet pipe (21), and a one-way valve B is installed inside the oil inlet pipe (21).

9. The stamping die in-die oil supply cooling and lubrication structure according to claim 1, characterized in that: The cooling device (4) further comprises a heat exchanger (401), a water pump (402), a water pumping pipe (403), and two water outlet pipes (404); one end of the water pumping pipe (403) is in communication with the casing (2), and the other end is in communication with the water inlet end of the water pump (402); the water outlet end of the water pump (402) is connected to one end of the heat exchanger (401) via a water pipe; the two water outlet pipes (404) are both fixedly connected to the casing (2); the two water outlet pipes (404) are both in communication with the water outlet end of the heat exchanger (401); and the two oil supply pipes (12) are respectively in communication with the two water outlet pipes (404).

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