Holding cutting die device of high-strength steel plate forge piece

Abstract

The utility model belongs to the technical field of forging and trimming composite dies, and particularly relates to a holding and cutting die device of a high-strength steel plate forge piece, which comprises a male die component and a female die component, an n-shaped shoulder pole and an ejector rod for ejecting burrs penetrate into the male die fixing plate, the top of the male die fixing plate is fixedly connected with a male die through a fastening bolt, a hot forging piece is arranged at the top end of the male die, and an ejector rod for ejecting the forging piece penetrates into the male die; the female die part comprises a floating plate fixedly connected with an upper die bottom plate of the press machine through fastening bolts, a spring device, a correction half die and a female die. The spring device can provide elastic force and apply the elastic force to the correction half die to correct a hot forging piece making contact with the lower portion in the female die descending trimming process. The device can be matched with an automatic production line, burrs of high-strength steel plate forgings can be stably and efficiently cut off, hot forgings are corrected, workpiece taking is safe, and efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of forging trimming composite dies, in particular to a cutting die device for high-strength steel plate forgings. Background Art

[0002] High-strength steel plate is one of the important parts of engineering machinery and a kind of vulnerable parts used in engineering machinery. It is often used in engineering machinery such as excavators, bulldozers, crawler cranes, pavers, etc. After the high-strength steel plate is produced by hot forging with forging dies, general forgings need to be trimmed later.

[0003] The commonly used trimming process in China is to put the forging into the female die, and the male die cuts off the flash (i.e. burr) as the press moves downward. A conventional trimming die composed of a female die and a male die is used. The upper die plate installed with the male die moves downward and cooperates with the female die installed on the lower die plate below. After the flash of the forging is cut off, the workpiece is obtained, the flash and flash material are manually removed, and the workpiece is ejected by the pusher installed on the lower die plate to complete the flash removal of the forging.

[0004] However, this trimming process has some problems in use. For example, the high-strength steel plate body belongs to the inner forging of the thin plate. The forging is easy to deform during trimming, which affects the processing of the high-strength steel plate body forging. In addition, when the forging is placed in the female die, because the flash bridge has a certain width, when it is placed in the female die, it is easy to have the problem of misalignment between the corresponding positions of the forging and the female die. After the male die goes down, it cannot completely match the forging, and trimming indentations are easy to occur on the forging, affecting the quality of the forging. In addition, because the trimming press does not have a lower ejection mechanism, it is inconvenient to remove the forging in the female die after the forging is trimmed, which affects the production efficiency. After trimming, the flash is easy to get stuck on the male die, which makes it inconvenient to remove the flash, which also affects the production efficiency. In addition, the oxide scale produced by the heated forging during the trimming process is easy to scatter on the ground around the processing table during the purge, which is difficult to collect and clean. Based on this, a cutting die device for high-strength steel plate body forgings is designed. Utility Model Content

[0005] In view of the above-mentioned and / or existing problems in a conventional cutting die device for high-strength steel plate forgings, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a cutting die device for high-strength steel plate forgings, which can solve the above-mentioned existing problems.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] A cutting die device for high-strength steel plate forgings comprises a male die component and a female die component, wherein the male die component comprises a male die fixing plate, a П-shaped shoulder pole, a burr ejecting rod and a male die, wherein the male die fixing plate is fixedly connected to a bottom plate of a lower die of a press machine through a first fastening bolt, wherein the П-shaped shoulder pole and the burr ejecting rod are inserted into the male die fixing plate, wherein the top of the male die fixing plate is fixedly connected to the male die through a second fastening bolt, wherein a stripping plate movable up and down is sleeved on the male die, wherein the male die is inserted into a burr ejecting rod, wherein the lower end surface of the burr ejecting rod is in contact with the upper end surface of the П-shaped shoulder pole;

[0009] The female mold component includes a fixed bottom plate, a fixed side plate, a floating plate, a spring device and a female mold. The fixed bottom plate is fixedly connected to the upper mold bottom plate of the press through a third fastening bolt, the bottom of the fixed bottom plate is fixedly connected to the fixed side plate through a fourth fastening bolt, the bottom of the fixed bottom plate is connected to the floating plate through a seventh fastening bolt, the bottom of the floating plate is fixedly connected to the correction half mold through a fifth fastening bolt, the fixed side plate is fixedly connected to the female mold through a sixth fastening bolt, the spring device is arranged between the fixed bottom plate and the floating plate, and the correction half mold is arranged between the floating plate and the female mold.

[0010] Preferably, a hot forging is provided at the upper end of the male die, an ejector block is provided at the top end of the ejector rod for ejecting the forging, and the upper end surface of the ejector block is in contact with the lower end surface of the hot forging.

[0011] Preferably, a light hole is opened on the floating plate, a seventh fastening bolt connecting the floating plate and the fixed bottom plate is passed through the light hole, a return spring is sleeved on the seventh fastening bolt, and the return spring is located between the floating plate and the fixed bottom plate to ensure that the floating plate fixed on the fixed bottom plate can float up and down relative to the fixed bottom plate in the female mold part when the female mold part performs trimming operation.

[0012] Preferably, the spring device comprises a plurality of guide posts fixedly mounted on the bottom of the fixed base plate, and the bottom ends of the guide posts are inserted into the floating plate, and springs are sleeved on the guide posts, and the springs are located between the fixed base plate and the floating plate.

[0013] Preferably, two П-shaped shoulder poles and four ejector rods for ejecting burrs are symmetrically inserted into the male mold fixing plate, and the upper end surfaces of the ejector rods for ejecting burrs are fixedly connected to the lower end surface of the stripping plate.

[0014] Preferably, the male mold fixing plate is respectively provided with 4 through holes A, 4 through holes B and 4 through holes C, through holes A and through holes B are respectively penetrated with П-shaped shoulder poles and ejector rods for ejecting burrs, and the top of the male mold fixing plate is fixedly connected to the male mold at the through hole C by a second fastening bolt.

[0015] Preferably, the through hole A is arranged in the middle of the male mold fixing plate, the through hole B is arranged on the outer side of the male mold fixing plate, and the through hole C is arranged between the through hole A and the through hole B.

[0016] Preferably, two pairs of through holes D are provided vertically in the male die for the ejector rods for ejecting the forging to pass through.

[0017] Preferably, a first groove for the ejection block to move is provided at the upper end of the through hole D, and a second groove for the ejection rod to move is provided at the lower end of the through hole D, and the depth of the second groove is greater than the upward stroke of the П-shaped shoulder pole.

[0018] Preferably, the upper end surface of the ejection block is configured as a part of the upper end surface of the male mold when the male mold is reset.

[0019] Preferably, when the parts of the cutting mold device are in the reset state, the lower end surfaces of the two vertical rods of the П-shaped shoulder pole are located below the horizontal plane of the lower end surface of the ejector rod for ejecting the burrs.

[0020] Preferably, the lower end of the ejector rod for ejecting the burrs is connected to the pneumatic or hydraulic drive device of the press; the lower ends of the two vertical rods of the I-shaped shoulder pole are connected to the pneumatic or hydraulic drive device of the press.

[0021] Preferably, the lower end of the ejector rod for ejecting burrs passes through the through hole B through the male mold fixing plate and the bottom plate of the lower mold of the press and is connected to the pneumatic or hydraulic drive device of the press connected thereto.

[0022] Preferably, the two vertical rods of the П-shaped shoulder pole penetrate the male mold fixing plate and the lower mold bottom plate of the press through the through hole A and are connected to the pneumatic or hydraulic drive device of the press connected thereto.

[0023] Preferably, the floating plate is a box body with a hollow structure, wherein the upper part is a solid structure and the lower part is a hollow structure, and the correction half-mold is fixedly connected to the bottom plate of the floating plate by a fifth fastening bolt.

[0024] Preferably, concave grooves are provided on the end faces of both sides of the stripper plate, corresponding to the positions where the flash manipulator clamps the flash, and more preferably, four concave grooves are symmetrically provided. This design can prevent the flash (i.e. burr) material from being too small, causing the flash manipulator to clamp and remove the flash and interfere with the stripper plate, which in serious cases causes the flash to collide and get stuck with the male mold installed on the male mold fixing plate, making it impossible to remove the flash.

[0025] Preferably, an oxide scale collecting groove is arranged on the outer side of the male mold fixing plate, and the oxide scale collecting groove is arranged around the bottom of the male mold fixing plate. The height of the oxide scale collecting groove edge is lower than that of the male mold fixing plate and / or the stripping plate. When the oxide scale blower performs air blowing operation, it can take on the oxide scale. More preferably, the bottom of the oxide scale collecting groove is a slope structure with high ends and low middle. After the oxide scale is collected, it gathers from the two ends to the middle and is discharged from the bottom opening in the middle.

[0026] Preferably, a mobile electromagnetic relay magnetic suction mechanism is arranged on the crossbeam of the press, and a magnetic suction head is arranged at the front end of the electromagnetic relay magnetic suction mechanism. When power is turned on, the magnetic suction head generates magnetic force to absorb the oxide scale on the stripping plate, the male mold fixing plate and the male mold. Under the dragging of the mobile electromagnetic relay magnetic suction mechanism, the magnetic suction head generates magnetic force to guide the adsorbed oxide scale to the top of the oxide scale collection tank. After power is cut off, the magnetic force of the magnetic suction head disappears, and the adsorbed oxide scale falls into the rear oxide scale collection tank.

[0027] Another aspect of the utility model provides a high-strength steel plate forging workpiece trimming processing device, including any one of the above-mentioned high-strength steel plate forging cutting die devices.

[0028] Preferably, it also includes a burr robot for taking out the separated burrs and a workpiece removal robot for taking out the workpiece after the burrs are removed.

[0029] Compared with the prior art, the utility model has the following beneficial effects:

[0030] 1. This cutting die device cooperates with the automated production line operation. By setting a floating plate, a correction half-film and a spring device, it can stably cut off the burrs of high-strength steel plate forgings, and eliminate the problem that the blanking and cutting using residual heat can easily cause large deformation of the workpiece. During the cutting process, the correction half-film performs real-time correction of the high-strength steel plate forgings in coordination with the spring device, and the high-strength steel plate forgings will not be offset and the burr cutting failure will not occur, which improves the workpiece qualification rate. Moreover, it reduces the separate correction process, shortens the production process, and improves production efficiency. In addition, after the burrs are cut off, the correction half-film gradually releases the elastic force in coordination with the spring device and the reset spring, and the correction half-film gradually separates from the workpiece during the real-time correction of the workpiece, ensuring that the workpiece will not be offset in the process of separating from the burrs after the burrs are cut off, ensuring that the subsequent workpiece ejection and removal operations are completed smoothly, further improving the workpiece qualification rate and production efficiency.

[0031] 2. The utility model adopts a floating plate designed as a hollow structure box, which reduces the weight of the female mold component, protects the female mold, and increases the service life of the female mold.

[0032] 3. The utility model not only solves the problem of manual removal of burrs (i.e., rough edges), and improves production efficiency, but also arranges a П-shaped shoulder pole, a push rod for ejecting forgings, a push block, and a push rod for ejecting burrs on the positive film component. After the burrs of the high-strength steel plate forging are cut off, the workpiece is separated from the burrs, and the push rod and the push block for ejecting forgings lift the workpiece upward. After the workpiece and the burrs are separated, the distance between the workpiece and the burrs is further enlarged, thereby eliminating the phenomenon that the picking manipulator collides with the surface of the forging when the distance between the workpiece and the burrs is close and the burrs interfere with the picking when the picking manipulator performs the picking operation. The push rod for ejecting burrs lifts the burrs upward, and the distance between the burrs and the positive film is enlarged, thereby avoiding the collision and interference between the burrs manipulator and the tooling when clamping the burrs.

[0033] 4. Solve the problem of collecting oxide scale at the processing site, clean the processing tools and on-site working environment, and realize the recycling of oxide scale.

[0034] 5. The utility model can also be applied to the trimming and correction process of alloy steel plates such as aluminum alloy and titanium alloy. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The utility model is a schematic diagram of the explosive structure of the cutting die device for high-strength steel plate forgings.

[0036] Figure 2 It is a schematic diagram of the main view of the cutting die device structure of the high-strength steel plate forging of the utility model in the cutting state.

[0037] Figure 3 It is a left view schematic diagram of the cutting die device structure of the high-strength steel plate forging of the utility model in the cutting state.

[0038] Figure 4 It is a schematic diagram of the AA section view of the cutting die device structure of the high-strength steel plate forging of the utility model in the cutting state.

[0039] Figure 5 This is a schematic BB section view of the cutting die device structure of the high-strength steel plate forging of the utility model in the cutting state.

[0040] Figure 6 The utility model is a schematic diagram of the matching of the male and female dies of the cutting die device for the high-strength steel plate forging.

[0041] Figure 7 The utility model is a schematic diagram of the structure of the male die fixing plate of the cutting die device for the high-strength steel plate forging.

[0042] In the figure: male die fixing plate -1, male die -2, stripping plate -3, female die -4, correction half die -5, ejector block -6, hot forging -7, П-shaped shoulder pole -8, ejector rod for ejecting burrs -9, fastening plate -10, fixed bottom plate -11, fixed side plate -12, floating plate -13, guide column -14, spring -15, ejector rod for ejecting forging -16, male die part -17, female die part -18, seventh fastening bolt -19, return spring -20, through hole A-21, through hole B-22, through hole C-23, through hole D-24. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] The utility model provides a cutting die device for high-strength steel plate forgings. Figure 1-Figure 7 , including a male mold part 17 and a female mold part 18.

[0045] The male mold component 17 includes a male mold fixing plate 1 and a male mold 2, wherein the male mold fixing plate 1 is fixedly connected to the bottom plate of the lower mold of the press at four corners of the male mold fixing plate 1 by first fastening bolts, and the male mold fixing plate 1 is respectively provided with four through holes A21, four through holes B22 and four through holes C23, wherein two П-shaped shoulder poles 8 and four ejector rods 9 for ejecting burrs are respectively inserted into the through holes A21 and the through holes B22, and the top of the male mold fixing plate 1 is fixedly connected to the male mold 2 at the through hole C23 by second fastening bolts. In the present embodiment, four through holes A21, four through holes B22 and four through holes C23 are respectively arranged in pairs and symmetrically. Furthermore, the through hole A21 is arranged in the middle of the male mold fixing plate 1, the through hole B22 is arranged on the outer side of the male mold fixing plate 1, and the position of the through hole C23 is arranged according to the installation position of the bottom of the male mold 2 on the male mold fixing plate 1. Preferably, the four through holes C23 are arranged in a symmetrical manner on the male mold fixing plate 1 to improve the stability and support of the male mold component 17 during operation.

[0046] A stripping plate 3 is sleeved on the upper part of the male die 2 and can be moved up and down and is arranged parallel to the plane of the male die fixing plate 1. Two pairs of four through holes D24 are arranged vertically through the male die 2 for the passage of a ejector rod 16 for ejecting forgings. A hot forging 7 is arranged on the upper end of the male die 2. An ejector block 6 is arranged on the top of the ejector rod 16 for ejecting forgings, and the upper end surface of the ejector block 6 contacts the lower end surface of the hot forging 7, and the lower end surface of the ejector rod 16 for ejecting forgings contacts the П-shaped shoulder pole 8. In addition to the natural falling contact between the ejector rod 16 for ejecting forgings and the П-shaped shoulder pole 8, other connections may be made, including but not limited to fixed connection. For example, the cylindrical surface of the lower end of the ejector rod 16 for ejecting forgings is set to an external thread structure, and an internal thread hole matching the contact position is opened on the П-shaped shoulder pole 8. Thus, the ejector rod 16 for ejecting forgings and the П-shaped shoulder pole 8 are threadedly fixedly connected. This fixed connection method can enhance the stability of the ejector rod 16 for ejecting forgings, and is adopted according to actual conditions.

[0047] A first groove for the ejection block 6 to move is provided at the upper end of the through hole D24, and a second groove for the ejection forging ejector 16 to move is provided at the lower end of the through hole D24. The depth of the second groove is greater than the upward stroke of the П-shaped shoulder pole 8. In this embodiment, the upward stroke of the П-shaped shoulder pole 8 is preferably 50 to 70 mm. By providing the ejection forging ejector 16 and the ejection block 6, after the hot forging 7 completes the trimming operation, the hot forging 7 (i.e., the workpiece) after the burrs are cut off can be ejected from the top of the male die through the cooperation of the ejection forging ejector 16 and the ejection block 6, and the distance between the cut burrs and the workpiece is increased, which makes it easier for the subsequent retrieval robot to perform automated operations without the occurrence of interference and collision between the retrieval robot and the burrs.

[0048] In this embodiment, the upper end surface of the ejector block 6 is arranged in a corresponding position to the male die 2. When the male die 2 is reset, the upper end surface of the ejector block 6 is constructed as a part of the upper end surface of the male die 2. This design can avoid the situation that after the female die part presses the hot forging 7 downward, when the hot forging 7 is pressed and contacts with the male die 2 below, the surface of the hot forging 7 is damaged due to the inconsistency between the upper end surface shape of the ejector block 6 and the upper end surface shape of the male die 2, resulting in a defective workpiece.

[0049] The female mold component includes a fixed bottom plate 11, a fixed side plate 12, a floating plate 13, a spring device and a female mold 4. The female mold 4 is a concave mold structure. The fixed bottom plate 11 is fixedly connected to the upper mold bottom plate of the press by a third fastening bolt. The bottom of the fixed bottom plate 11 is fixedly connected to the fixed side plate 12 by a fourth fastening bolt. The bottom of the fixed bottom plate 11 is connected to the floating plate 13 by a spring device. The bottom of the floating plate 13 is fixedly connected to the correction half mold 5 by a fifth fastening bolt. The lower end of the fixed side plate 12 is fixedly connected to the female mold 4 by a sixth fastening bolt. The correction half mold 5 is arranged between the floating plate 13 and the female mold 4. A light hole is opened on the floating plate 13, and a seventh fastening bolt 19 connecting the floating plate 13 and the fixed base plate 11 is passed through the light hole. A reset spring 20 is sleeved on the seventh fastening bolt 19, and the reset spring 20 is arranged between the floating plate 13 and the fixed base plate 11 to provide a reset elastic force for the floating plate 13, so as to ensure that the floating plate 13 fixed on the fixed base plate 11 can float up and down relative to the fixed base plate 11 in the female mold part 18 when the female mold part 18 is performing a trimming operation.

[0050] Reducing the weight of the female mold component can protect the female mold and extend its service life. In the present embodiment, the floating plate 13 is a box body with a hollow structure, wherein the upper part is a solid structure and the lower part is a hollow structure. The correction half mold 5 is fixedly connected to the bottom plate of the floating plate 13 by the fifth fastening bolt.

[0051] In this embodiment, a plurality of spring devices for adjusting the pressure of the floating plate 13 are also provided between the floating plate 13 and the fixed bottom plate 11. Preferably, the spring devices are arranged in a symmetrical manner to ensure that the elastic force generated by the spring devices can be evenly applied to the floating plate 13. The spring devices include a plurality of guide posts 14 fixedly installed at the bottom of the fixed bottom plate 11, and the bottom ends of the guide posts 14 are inserted into the floating plate 13. The guide posts 14 are sleeved with springs 15, and the springs 15 are located between the fixed bottom plate 11 and the floating plate 13. The above-mentioned spring device can also be a combination of a butterfly spring replacing the guide posts 14 and the springs 15. With such a design, when the female mold part moves downward, when the correction half mold 5 contacts the hot forging 7, the floating plate 13 is blocked from moving downward, and the springs 15 of the spring device are compressed and gradually contracted and generate elastic force. The downward pressure applied by the spring device can gradually increase and act on the floating plate 13, which is used to adjust the pressure of the correction half mold 5, and ensure the accurate correction of the hot forging 7 during trimming.

[0052] In order to facilitate the installation of the spring device of the female mold part, in the present embodiment, a fastening plate 10 can also be arranged between the fixed side plate 12 and the female mold 4. At this time, the female mold 4 is welded to the bottom of the fastening plate 10, and the fastening plate 10 is fixedly connected to the fixed side plate 12 by an eighth fastening bolt.

[0053] In the present embodiment, two П-shaped shoulder poles 8 and four ejector rods 9 are symmetrically inserted into the male mold fixing plate 1. The lower ends of the ejector rods 9 pass through the male mold fixing plate 1 and the bottom plate of the lower mold of the press through the through hole B22 and are connected to the pneumatic or hydraulic drive device of the press connected thereto. The upper end faces of the ejector rods 9 are fixedly connected to the lower end face of the stripper plate 3 installed at the upper end of the male mold 2. In the present embodiment, the upper end face of the ejector rods 9 are welded to the lower end face of the stripper plate 3. Therefore, when the ejector rods 9 move upward, an upward force can be applied to the cut burrs through the stripper plate 3, and the burrs are displaced upward with the stripper plate 3, which facilitates the burr grabbing operation of the burr robot, and the burr grabbing operation will not fail.

[0054] In this embodiment, two П-shaped shoulder poles 8 are symmetrically arranged in the male mold part, which can ensure that after the cutting die device completes the burr trimming operation of the hot forging 7, the two П-shaped shoulder poles 8 are symmetrically arranged to provide balanced supporting force for the ejector rod 16 for ejecting the forging supported at its upper end, so that when the П-shaped shoulder pole 8 goes up, the ejector rod 16 can output a balanced lifting force to the ejector block 6 at its top end, so as to smoothly eject the hot forging 7 (i.e., the workpiece) after the burr is cut off. This design can avoid the problem that when only a single П-shaped shoulder pole 8 is set, the ejector block 6 pushes the workpiece upward due to the irregularity of the hot forging 7 or the non-overlapping of the center of gravity of the hot forging 7 with the ejector block 6, thereby affecting the subsequent picking operation of the picking robot, and even causing the picking robot to fail to pick up the workpiece.

[0055] In this embodiment, four burr ejecting rods 9 are symmetrically arranged in the male mold part, which can ensure that after the cutting die device completes the burr trimming operation of the hot forging 7, the four burr ejecting rods 9 are symmetrically arranged to provide balanced supporting force for the stripping plate 3 supported at its upper end, so that when the burr ejecting rods 9 move upward, the stripping plate 3 connected to its top end can be balancedly output with the lifting force through the burr ejecting rods 9, so as to smoothly eject the cut burrs. This design can avoid the situation where only a single or asymmetrically arranged burr ejecting rod 9 is set, and the burr ejecting rod 9 pushes the stripping plate 3 upward due to the uneven force below the stripping plate 3, thereby affecting the subsequent burr removal operation of the flying parts robot, and even causing the burr robot to fail to pick up the parts.

[0056] A high-strength steel plate forging workpiece trimming processing device comprises the above-mentioned high-strength steel plate forging holding and cutting die device, a flash edge manipulator and a piece removal manipulator.

[0057] When used, the specific steps are as follows:

[0058] Operation process:

[0059] Step 1: Stably place the hot forging 7 on the upper end of the male die 2.

[0060] Step 2: The press drives the female die component and the female die 4 downward. At a certain moment, the correction half die 5 contacts the hot forging 7. When it continues to descend, the floating plate 13 is affected by the spring 15 and the correction half die 5 gradually presses the hot forging 7, so that the pressure of the correction half die 5 is gradually adjusted through the floating plate 13, and the female die component and the female die 4 continue to descend with the fixed side plate 12 and the fixed bottom plate 11; then the hot forging 7 is subjected to the closed compressive stress, and the blade of the female die 4 cuts off the burr, and the burr falls on the stripping plate 3, and the correction effect of the hot forging 7 is achieved at the same time; after the female die 4 descends to complete the burr removal and separation of the hot forging 7, the female die 4 continues to descend and cooperates with the male die 2 for a certain time (generally lasting 2-5 seconds) to complete the correction of the workpiece, so as to eliminate the problems of high-strength steel plate cutting resistance and easy deformation of plate workpieces.

[0061] Since the correction half-die 5 in the female die component is fixedly connected to the fixed bottom plate 11 through the floating plate 13 and the spring device (in this embodiment, a combination of the spring 15 and the guide column 14), the spring device relies on the spring 15 to play a buffering role, that is, the elastic force generated by the spring under pressure can partially absorb the instantaneous impact force of the female die 4 rigidly fixedly connected to the lower end of the female die component when it contacts the hot forging and the male die during the downward process, thereby indirectly protecting the female die blade.

[0062] Step 3: After trimming, the female die component and the female die 4 move upward with the upper die bottom plate of the press, and the female die component and the male die component are gradually separated. During the upward movement of the female die component and the female die 4, the spring 15 gradually recovers from the compressed state. Under the action of the spring 15, the downward pressure is gradually released, driving the correction half-die 5 to gradually separate from the hot forging 7 after trimming, and finally the female die 4 is out of contact with the hot forging 7.

[0063] Step 4: The oil cylinder of the lower die of the press moves upward, first contacts with the П-shaped shoulder pole 8 and applies thrust, the П-shaped shoulder pole 8 drives the ejector rod 16 for ejecting the forging upward, and the ejector rod 16 for ejecting the forging lifts up the hot forging 7 through the ejector block 6; the oil cylinder of the lower die of the press continues to move upward to apply thrust to the П-shaped shoulder pole 8 and the ejector rod 9 for ejecting the burrs at the same time, the П-shaped shoulder pole 8 drives the hot forging 7 to continue to move upward, while the ejector rod 9 for ejecting the burrs drives the stripper plate 3 to separate the burrs from the contact with the male die 2.

[0064] Step 5: First, take out the workpiece by the picking robot or clamp, and then take out the burrs by the burr robot or clamp.

[0065] Step 6: The lower die cylinder of the press releases its force, and the parts of the cutting die device are reset, that is, the female and male parts of the cutting die device return to the start-up ready state, so that the cutting die device repeats the above steps 1 to 6 to perform a new hot forging trimming operation.

[0066] In the present embodiment, when all parts of the cutting die device are in the reset state, the lower end surfaces of the two vertical rods of the П-shaped shoulder pole 8 are located below the horizontal plane of the lower end surface of the ejector rod 9 for ejecting the burrs. Preferably, the lower end surfaces of the two vertical rods of the П-shaped shoulder pole 8 are located 30 to 50 mm below the horizontal plane of the lower end surface of the ejector rod 9 for ejecting the burrs. This design is to achieve that the oil cylinder of the lower die of the press moves upward, first contacts with the П-shaped shoulder pole 8 and applies thrust, and the П-shaped shoulder pole 8 drives the ejector rod 16 for ejecting the forging to move upward, and the ejector rod 16 for ejecting the forging first lifts the workpiece through the ejection block 6, and the workpiece is completely separated from the burrs cut off in step four, and then the lower die of the press The oil cylinder continues to move upward to apply thrust to the П-shaped shoulder pole 8 and the ejector rod 9 for ejecting the burrs at the same time. While the П-shaped shoulder pole 8 drives the workpiece to continue to move upward, the ejector rod 9 for ejecting the burrs drives the stripping plate 3 to separate the burrs from the contact with the male mold 2. With this design, since the distance between the workpiece and the burrs is further increased after separation, it is more convenient to clamp the workpiece by the picking robot or clamps in the subsequent step five, and the operation of clamping the burrs by the burr robot or clamps will not occur. The distance between the workpiece and the burrs will not be close after separation, resulting in collision and interference between the picking robot and the burrs when the subsequent picking robot or clamps clamp the workpiece, thereby affecting the normal workpiece picking and causing the workpiece picking to fail.

[0067] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A cutting die device for high-strength steel plate forgings, comprising a male die component (17) and a female die component (18), characterized in that: The male mold component (17) comprises a male mold fixing plate (1), a П-shaped shoulder pole (8), a push rod (9) for ejecting burrs, and a male mold (2); the male mold fixing plate (1) is fixedly connected to the bottom plate of the lower mold of the press by a first fastening bolt; the П-shaped shoulder pole (8) and the push rod (9) for ejecting burrs are inserted into the male mold fixing plate (1); the top of the male mold fixing plate (1) is fixedly connected to the male mold (2) by a second fastening bolt; a stripping plate (3) that moves up and down is sleeved on the male mold (2); a push rod (16) for ejecting forgings is inserted into the male mold (2); the lower end surface of the push rod (16) for ejecting forgings is in contact with the upper end surface of the П-shaped shoulder pole (8); The female mold component (18) comprises a fixed bottom plate (11), a fixed side plate (12), a floating plate (13), a spring device and a female mold (4); the fixed bottom plate (11) is fixedly connected to the upper mold bottom plate of the press machine via a third fastening bolt; the bottom of the fixed bottom plate (11) is fixedly connected to the fixed side plate (12) via a fourth fastening bolt; the bottom of the fixed bottom plate (11) is connected to the floating plate (13) via a seventh fastening bolt (19); the bottom of the floating plate (13) is fixedly connected to the correction half mold (5) via a fifth fastening bolt; the fixed side plate (12) is fixedly connected to the female mold (4) via a sixth fastening bolt; the spring device is arranged between the fixed bottom plate (11) and the floating plate (13); and the correction half mold (5) is arranged between the floating plate (13) and the female mold (4).

2. The cutting die device for high-strength steel plate forging according to claim 1 is characterized in that: The male mold fixing plate (1) is provided with a through hole A (21), a through hole B (22) and a through hole C (23); the through hole A (21) is used to insert the I-shaped shoulder pole (8); the through hole B (22) is used to insert the ejector rod (9) for ejecting burrs; the male mold (2) is fixedly connected to the male mold fixing plate (1) at the through hole C (23).

3. The cutting die device for high-strength steel plate forging according to claim 1 is characterized in that: A hot forging (7) is provided at the upper end of the male die (2), and an ejector block (6) is provided at the top end of the ejector rod (16) for ejecting the forging, wherein the upper end surface of the ejector block (6) contacts the lower end surface of the hot forging (7).

4. A cutting die device for high-strength steel plate forging according to claim 3, characterized in that: The male die (2) is provided with two pairs of through holes D (24) for the ejector rod (16) for ejecting the forged piece to pass through, and the upper end surface of the ejector block (6) is configured to form a part of the upper end surface of the male die (2) when the male die (2) is reset; a first groove for the ejector block (6) to move is provided at the upper end of the through hole D (24), and a second groove for the ejector rod (16) to move is provided at the lower end of the through hole D (24), and the depth of the second groove is greater than the upward stroke of the I-shaped shoulder pole (8).

5. According to the high-strength steel plate forging cutting die device described in claim 1, it is characterized in that: The spring device comprises a guide column (14), the bottom end of the guide column (14) is inserted into the floating plate (13), a spring (15) is sleeved on the guide column (14), and the spring (15) is located between the fixed bottom plate (11) and the floating plate (13) and is used to adjust the pressure of the floating plate (13).

6. A cutting die device for high-strength steel plate forging according to any one of claims 1 to 5, characterized in that: Two П-shaped shoulder poles (8) and four ejector rods (9) for ejecting burrs are symmetrically inserted into the male mold fixing plate (1), and the upper end surfaces of the ejector rods (9) for ejecting burrs are fixedly connected to the lower end surface of the stripping plate (3).

7. A cutting die device for high-strength steel plate forging according to any one of claims 1 to 5, characterized in that: The floating plate (13) is a box body with a hollow structure.

8. A cutting die device for high-strength steel plate forging according to any one of claims 1 to 5, characterized in that: In the reset state, the lower end surfaces of the two vertical rods of the П-shaped shoulder pole (8) are located below the horizontal plane of the lower end surface of the ejector rod (9) for ejecting the burrs.

9. A cutting die device for high-strength steel plate forging according to any one of claims 1 to 5, characterized in that: The lower end of the ejector rod (9) for ejecting the burrs is connected to the pneumatic or hydraulic drive device of the press; the lower ends of the two vertical rods of the П-shaped shoulder pole (8) are connected to the pneumatic or hydraulic drive device of the press.

10. A cutting die device for high-strength steel plate forgings according to any one of claims 1 to 5, characterized in that: Concave grooves are provided on the double-side end surfaces of the stripping plate (3) at locations corresponding to the positions where the flash edge robot is clamped.

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