High-efficiency forging trimming die

Abstract

The utility model belongs to the technical field of forge piece trimming dies, and particularly relates to a high-efficiency forge piece trimming die which comprises an upper die assembly and a lower die assembly. The upper die assembly comprises an upper die plate, an upper die knife edge, an upper die punch part and a top punch part, the top punch part is arranged on the upper die plate and elastically connected with the upper die punch part, the lower end of the upper die punch part extends out of the upper die knife edge and directly faces the lower punch, a product part to be trimmed is located between the upper die punch part and the lower punch, and a flash part directly faces the upper die knife edge; a reverse cutting mode is adopted, a product part is conveniently clamped into water after edge cutting is completed, and the water inlet temperature is guaranteed; the top punch part is propped against the upper die punch part, and the upper die punch part and the lower punch part are used for correcting the product part to achieve a shaping effect; due to the fact that the lower end of the upper die punch part is higher than the upper die knife edge, the upper die knife edge is separated from the product part firstly after edge cutting is completed, and the upper die punch part plays a part returning role to prevent the product part from being clamped on the upper die knife edge.

Description

Technical Field

[0001] The utility model belongs to the technical field of forging trimming dies, and particularly relates to a high-efficiency forging trimming die. Background Art

[0002] A forging trimming die is a tool used to trim metal workpieces during the forging process. During forging, the metal blank is heated and then placed in the die, where it is struck or pressed forcefully to produce metal products of the desired shape. The trimming die is used to deburr, shape, or trim the edges of the products after the forging process to make them meet the design requirements and specifications. These trimming dies play a crucial role in the production of high-precision and high-quality forgings and are widely used in industries such as automotive, aerospace, and machinery manufacturing. With the development of advanced manufacturing technologies, the design and manufacturing of trimming dies are also constantly innovating and improving to meet the forging requirements of different materials and shapes. Along with the advancement of intelligent production, high-efficiency forging trimming dies have become increasingly important. High-efficiency forging trimming dies often also adopt automated or semi-automated production methods, cooperating with intelligent devices such as robots to achieve the automation and intelligence of the production line.

[0003] Especially for some forging parts of battery pack brackets with special and complex shapes, how to accurately position the forging during the trimming process, perform hot shaping on the forging through hot trimming, avoid the special-shaped forging being stuck on the cutting edge after trimming, reduce manual operation to improve production efficiency, and after trimming, the product needs to be put into water for rapid cooling, and the temperature of the product before entering the water needs to be guaranteed to be above 400 °C. How to ensure the water entry temperature and avoid the product temperature dropping due to too long transfer time has become a major problem. Summary of the Utility Model

[0004] In view of this, to solve the problems existing in the prior art, the purpose of the utility model is to provide a high-efficiency forging trimming die, which has the effects of facilitating automation, preventing the forging from being stuck after trimming, and facilitating material ejection, can effectively improve production efficiency, enhance the stability of the automated operation of the production line, reduce the transfer time, and ensure the water entry temperature.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A high-efficiency forging trimming die, which includes: an upper die assembly and a lower die assembly, and the upper die assembly is arranged above the lower die assembly;

[0007] The lower die assembly includes a lower fixing plate and a lower punch, and the lower punch is arranged on the lower fixing plate;

[0008] The upper die assembly includes an upper template, an upper die cutting edge, an upper die punching head, and a top punching head. The top punching head is disposed on the upper template and is elastically connected to the upper die punching head. A die cavity is formed in the upper die cutting edge. The lower end of the upper die punching head extends out of the die cavity and is disposed opposite to the lower punch. The distance between the lowermost end surface of the upper die punching head and the uppermost end surface of the lower punch is less than the distance between the lowermost end surface of the upper die cutting edge and the uppermost end surface of the lower punch. The upper die punching head is slidably connected to the upper die cutting edge;

[0009] The forging to be trimmed is disposed on the lower punch. The forging to be trimmed includes a product part and a flash part. The product part is located between the upper die punching head and the lower punch, and the flash part is disposed opposite to the upper die cutting edge.

[0010] The specific technical effect is as follows: The trimming die of the prior art is often designed for forward trimming. After trimming is completed, the ejector pushes the flash part out above the product part. Therefore, it is only possible to first clamp and discard the flash part and then clamp the product part into the water. At this time, the product part has been placed on the trimming die and the temperature begins to drop, and the water inlet temperature cannot be guaranteed. The present utility model adopts a reverse trimming method, inverting the order of the upper and lower dies of the traditional trimming die. The upper die cutting edge is disposed on the upper die. During trimming, the upper die cutting edge moves downward. After trimming is completed, the product part is located above the flash part, which is convenient for the robotic arm to first clamp the product part, first transfer the product part into the water to ensure the water inlet temperature of the product part, and then clamp and discard the flash part; and the lower end of the upper die punching head extends out of the die cavity of the upper die cutting edge, that is, during the downward pressing process of the upper die assembly, the lower end of the upper die punching head first contacts the product part, pressing the product part tightly to prevent the forging from moving before the upper die cutting edge cuts off the flash part. And when the upper die cutting edge continues to press downward, the top punching head presses against the upper die punching head, and the upper die punching head and the lower punch correct the product part to play a shaping role; after trimming is completed, the upper die assembly rises as a whole. Because the lower end of the upper die punching head is higher than the upper die cutting edge, the upper die cutting edge is in front of the product part, and the upper die punching head plays an ejecting role to prevent the product part from being stuck on the upper die cutting edge.

[0011] Further, the upper die punching head includes: an upper fixing plate and an upper punch. The upper punch is disposed on the upper fixing plate. The lower end of the upper punch extends out of the die cavity and is disposed opposite to the lower punch. The upper fixing plate is elastically connected to the top punching head.

[0012] The specific technical effect is that the upper fixing plate plays a role in fixing the upper punch and driving the upper punch to move up and down together.

[0013] Further, the top punching head includes a plurality of springs and a spring plate. The upper ends of the plurality of springs are all connected to the upper template, the lower ends of the plurality of springs all penetrate through the spring plate and abut against the upper fixing plate, and the spring plate is disposed on the upper template.

[0014] The specific technical effects are as follows: The spring plate serves to fix the spring. When the upper die assembly presses down continuously under the spring pressure, several springs push against the upper fixing plate. The upper punch first contacts the product part and presses the product part tightly between the upper punch and the lower punch due to the pressure given by the springs. During the continuous downward pressing of the upper die assembly, the compression amount of the springs increases, and several springs provide higher pressure to the upper punch to correct the product part and play a shaping role.

[0015] Further, the upper die assembly further includes upper die guide posts. The upper ends of the upper die guide posts are arranged on the upper template. The lower ends of the upper die guide posts sequentially penetrate through the spring plate, the upper fixing plate and extend into the upper die cutting edge. The upper fixing plate is slidably connected with the upper die guide posts.

[0016] The specific technical effects are as follows: The upper die guide posts are used to fix the upper template, enable the upper fixing plate to slide on the upper die guide posts to drive the upper punch to move up and down, and play a positioning role in the cooperation between the upper die cutting edge and other parts in the upper die assembly.

[0017] Further, the upper die assembly further includes two cushion blocks. The two cushion blocks are respectively arranged at both ends of the upper die cutting edge. Both ends of each cushion block are respectively connected with the upper die cutting edge and the upper template.

[0018] Further, it further includes several support columns. The lower ends of the several support columns are all connected to the lower fixing plate. The several support columns are arranged around the circumference of the lower punch and are located below the flash part.

[0019] The specific technical effects are as follows: Affected by the continuous downward pressing after the flash part is cut off by the upper die cutting edge, after separating from the product part, the flash part drops onto the support columns around the lower punch, ensuring the stable position of the flash part and facilitating the subsequent removal of the flash part.

[0020] Further, the lower die assembly further includes a lower template and lower die guide posts. The lower die guide posts are arranged on the lower template. The upper ends of the lower die guide posts penetrate through the lower fixing plate and extend into the upper die cutting edge. The lower fixing plate is arranged on the lower template.

[0021] The specific technical effects are as follows: The lower template serves to fix the lower punch; the lower die guide posts are used to play a guiding role when the upper die cutting edge cooperates with the lower die assembly.

[0022] Further, the lower die guide post includes a first part and a second part connected to each other. The diameter of the first part is smaller than that of the second part. A first step surface is formed at the connection between the first part and the second part. The first part extends into the upper die cutting edge, and the second part penetrates through the lower fixing plate.

[0023] The specific technical effect is as follows: The lower die guide pillar is designed with a first stepped surface. When the mold is in the storage or mold-changing state, the upper die cutting edge can be supported by the stepped surface, ensuring the stable clamping of the upper and lower dies.

[0024] Furthermore, there is a first distance L1 between the first stepped surface and the lower end surface of the upper die cutting edge, and a second distance L2 between the upper end surface of the upper fixing plate and the lower end surface of the spring plate, where L2 > L1.

[0025] The specific technical effect is as follows: With the design of L2 > L1, it plays a role in protecting the upper punch and the lower punch in the clamped die state, preventing the upper punch and the lower punch from being crushed and deformed under the influence of gravity or other external forces, which may cause the failure of the punch positioning and shaping functions.

[0026] The beneficial effects of the present utility model are as follows:

[0027] (1) By adopting the reverse cutting method, the order of the upper and lower dies of the traditional trimming die is reversed. The upper die cutting edge is set on the upper die, and when trimming, the upper die cutting edge moves downward, which is convenient for first clamping and submerging the product part into water after trimming to ensure the water inlet temperature.

[0028] (2) The lower end of the upper die punch head extends out of the cavity of the upper die cutting edge, which can first press the product part to prevent the forging from moving before the upper die cutting edge cuts off the flash part, and when the upper die assembly continuously presses down, the top punch head presses against the upper die punch head, and the upper die punch head and the lower punch correct the product part to play a shaping role; after trimming, the upper die assembly rises as a whole. Since the lower end of the upper die punch head is higher than the upper die cutting edge, the upper die cutting edge first disengages from the product part, and the upper die punch head plays a role in ejecting the part, preventing the product part from being stuck on the upper die cutting edge.

[0029] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a structural schematic diagram of the present utility model;

[0032] Figure 2 It is an exploded view of the present utility model;

[0033] Figure 3 is a structural schematic diagram of the lower punch of the present utility model;

[0034] Figure 4 is a structural schematic diagram of the upper punch and the upper die cutting edge of the present utility model;

[0035] Figure 5 is a top view of the present utility model;

[0036] Figure 6 is Figure 5 a sectional view taken along A - A in

[0037] Figure 7 is Figure 5 a sectional view taken along B - B in

[0038] Figure 8 is a sectional view of the present utility model when the upper die cutting edge performs trimming.

[0039] In the figure:

[0040] 1. Upper die assembly; 2. Lower die assembly; 3. Upper template; 4. Upper die cutting edge; 5. Upper die punch head; 6. Top punch head; 7. Mold cavity; 8. Upper fixing plate; 9. Upper punch; 10. Spring; 11. Spring plate; 12. Upper die guide post; 13. Pad iron; 14. Support column; 15. Lower template; 16. Lower die guide post; 17. First part; 18. Second part; 19. First step surface; 20. Lower fixing plate; 21. Lower punch; 22. First screw group; 23. Second screw group; 24. Third screw group. Specific embodiments

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0042] As Figures 1 to 8 shown, a high - efficiency forging trimming die, which includes: an upper die assembly 1 and a lower die assembly 2, and the upper die assembly 1 is arranged above the lower die assembly 2;

[0043] The lower die assembly 2 includes a lower fixing plate 20 and a lower punch 21, and the lower punch 21 is arranged on the lower fixing plate 20;

[0044] The upper die assembly 1 includes an upper die plate 3, an upper die cutting edge 4, an upper die punch head 5 and a top punch head 6. The top punch head 6 is arranged on the upper die plate 3 and elastically connected to the upper die punch head 5. A die cavity 7 is opened in the upper die cutting edge 4. The lower end of the upper die punch head 5 extends out of the die cavity 7 and is arranged opposite to the lower punch 21. The distance between the lowermost end face of the upper die punch head 5 and the uppermost end face of the lower punch 21 is smaller than the distance between the lowermost end face of the upper die cutting edge 4 and the uppermost end face of the lower punch 21. The upper die punch head 5 is slidably connected to the upper die cutting edge 4. The forged part to be trimmed is arranged on the lower punch 21. The forged part to be trimmed includes a product part and a flash part. The product part is located between the upper die punch head 5 and the lower punch 21, and the flash part is arranged opposite to the upper die cutting edge 4.

[0045] It should be noted here that: the reverse cutting method is adopted to invert the order of the upper and lower dies of the traditional trimming die, and the upper die blade 4 is set on the upper die. During trimming, the upper die blade 4 moves downward. After trimming is completed, the product part is located above the flash part, which is convenient for the robot arm to clamp the product part first, transfer the product part into the water first, ensure the water temperature of the product part, and then clamp and discard the flash part; and the lower end of the upper die punch head 5 is extended out of the die cavity 7 of the upper die blade 4, that is, in the process of pressing the upper die assembly 1 downward, the lower end of the upper die punch head 5 first contacts the product part, and before the upper die blade 4 cuts off the flash part, the product part is pressed tightly to prevent the forging from running. The upper die punch head 5 is moved, and when the upper die blade 4 continues to press down, the top punch head 6 pushes against the upper die punch head 5, and the upper die punch head 5 and the lower punch 21 correct the product part to play a shaping role; after the trimming is completed, the upper die assembly 1 rises as a whole, and because the lower end of the upper die punch head 5 is higher than the upper die blade 4, the upper die blade 4 first separates from the product part, and the upper die punch head 5 plays a role in rejecting the product to prevent the product part from being stuck on the upper die blade 4; through this mechanical structure design of raising the upper die punch head 5, the process actions such as positioning and rejecting can be met, without adding complex accessories such as oil cylinders and air cylinders and automation steps, saving the supply demand of oil and air circuits, and improving the automation rhythm.

[0046] Because the product has a complex structure and a clamping column is set to facilitate the clamping of the robot, in order to facilitate positioning and placement, the clamping column needs to be set upward. Therefore, the order of the upper and lower dies of the traditional trimming die is reversed, and the forged forging is placed on the lower punch 21. The shape of the lower punch 21 matches the shape of the lower end face of the forging. After the forging is placed steadily, the upper die blade 4 moves downward to perform trimming.

[0047] The upper die punch part 5 includes: an upper fixing plate 8 and an upper punch 9. The upper punch 9 is arranged on the upper fixing plate 8. The lower end of the upper punch 9 extends out of the die cavity 7 and is arranged opposite to the lower punch 21. The upper fixing plate 8 is elastically connected to the top punch part 6.

[0048] It should be noted here that the upper fixing plate 8 functions to fix the upper punch 9 and drive the upper punch 9 to move up and down together. To ensure the positioning and shaping functions of the upper punch 9 and the lower punch 21, the shapes of the upper punch 9 and the lower punch 21 match the shape of the product part, and non-shaping required surfaces are added to the upper punch 9 and the lower punch 21 for clearance, so as to prevent the non-shaping required surfaces from being damaged during shaping. For example, structures such as lettering and automated clamping posts on the product part.

[0049] Each trimming die has two sets of upper punches 9 and lower punches 21, and two die cavities 7 are provided on the upper die cutting edge 4.

[0050] To meet the automated trimming requirements of the trimming die, the contour of the upper die cutting edge 4 is the outermost contour of the product part enlarged by 0.2 mm to 0.6 mm; to prevent interference between the upper punch 9 and the upper die cutting edge 4, the outermost contour of the upper punch 9 is the outermost contour of the product part reduced by 0.5 mm to 2 mm; to prevent the flash part from getting stuck on the lower punch 21, the outermost contour of the lower punch 21 is the outermost contour of the product part reduced by 1 mm to 5 mm.

[0051] The top punch head 6 includes a number of springs 10 and a spring plate 11. The upper ends of the number of springs 10 are all connected to the upper template 3, the lower ends of the number of springs 10 all penetrate through the spring plate 11 and abut against the upper fixing plate 8, and the spring plate 11 is arranged on the upper template 3.

[0052] It should be noted here that the spring plate 11 functions to fix the springs 10; when the upper die assembly 1 is continuously pressed down by the pressure of the springs 10, the number of springs 10 push against the upper fixing plate 8, and the upper punch 9 first contacts the product part and presses the product part tightly between the upper punch 9 and the lower punch 21 due to the pressure given by the springs 10. During the continuous downward pressing process of the upper die assembly 1, the compression amount of the springs 10 increases, and the number of springs 10 provides a higher pressure to the upper punch 9 for correcting the product part to play a shaping role, improving the dimensional accuracy of the product, and reducing the scrap rate for the subsequent machining of the product.

[0053] Since the forging is not cooled after forging and the forging is placed on the trimming die for hot shaping in a high-temperature state, only a sufficient number of springs 10 are needed to meet the shaping pressure requirements.

[0054] The springs 10 are selected as red springs 10 with a diameter of 35 mm and a length of 85 mm.

[0055] The upper die assembly 1 further includes upper die guide posts 12. The upper ends of the upper die guide posts 12 are arranged on the upper template 3, the lower ends of the upper die guide posts 12 sequentially penetrate through the spring plate 11, the upper fixing plate 8 and extend into the upper die cutting edge 4, and the upper fixing plate 8 is slidably connected to the upper die guide posts 12.

[0056] It should be noted here that the upper die guide post 12 is used to fix the upper template 3. The upper fixing plate 8 slides on the upper die guide post 12 to drive the upper punch 9 to move up and down, and plays a positioning role in the cooperation between the upper die cutting edge 4 and other parts in the upper die assembly 1.

[0057] The upper die assembly 1 further includes two cushion blocks 13, which are respectively arranged at both ends of the upper die cutting edge 4, and both ends of each cushion block 13 are respectively connected to the upper die cutting edge 4 and the upper template 3.

[0058] The two cushion blocks 13 are connected to the upper template 3 through the first screw group 22, and the first screw group 22 selects M20*60 screws.

[0059] It further includes a number of support columns 14. The lower ends of the number of support columns 14 are all connected to the lower fixing plate 20. The number of support columns 14 is arranged around the lower punch 21 and is located below the flash part.

[0060] It should be noted here that: affected by the continuous downward pressure after the flash part is cut off by the upper die cutting edge 4, the flash part falls onto the support columns 14 around the lower punch 21 after separating from the product part, ensuring the stable position of the flash part and facilitating the subsequent removal of the flash part.

[0061] The lower die assembly 2 further includes a lower template 15 and a lower die guide post 16. The lower die guide post 16 is arranged on the lower template 15. The upper end of the lower die guide post 16 penetrates through the lower fixing plate 20 and extends into the upper die cutting edge 4, and the lower fixing plate 20 is arranged on the lower template 15.

[0062] It should be noted here that: the lower template 15 plays a role in fixing the lower punch 21; the lower die guide post 16 is used to play a guiding role when the upper die cutting edge 4 cooperates with the lower die assembly 2.

[0063] The lower fixing plate 20 is connected to the lower template 15 through the second screw group 23, and the second screw group 23 selects M20*80 screws.

[0064] The lower punch 21 is connected to the lower fixing plate 20 through the third screw group 24, and the third screw group 24 selects M10*35 screws.

[0065] The lower die guide post 16 includes a first part 17 and a second part 18 which are connected to each other. The diameter of the first part 17 is smaller than that of the second part 18. A first step surface 19 is formed at the connection between the first part 17 and the second part 18. The first part 17 extends into the upper die cutting edge 4, and the second part 18 penetrates through the lower fixing plate 20.

[0066] It should be noted here that: the lower die guide post 16 adopts a design with a first step surface 19. When the mold is in the storage or mold change state, the upper die cutting edge 4 can be supported by the step surface to ensure the stable clamping of the upper and lower dies.

[0067] There is a first distance L1 between the first step surface 19 and the lower end surface of the upper die cutting edge 4.

[0068] Since the lower end of the upper punch 9 extends out of the upper die cutting edge 4, the upper punch 9 has a heightening value, that is, the distance from the lowermost end surface of the upper punch 9 to the lower end surface of the upper die cutting edge 4; the flash part has a flash thickness; after the flash part is separated from the product part by the upper die cutting edge 4 and continues to press down, it has a downward pressing stroke.

[0069] The total trimming stroke of the trimming die = heightening value + flash thickness + downward pressing stroke.

[0070] To ensure the normal operation of the upper trimming die, the first distance L1 > the total trimming stroke is required.

[0071] There is a second distance L2 between the upper end surface of the upper fixing plate 8 and the lower end surface of the spring plate 11, and L2 > L1.

[0072] It should be noted here that: the upper die punch head 5 is affected by the two fixing parts of the upper die cutting edge 4 and the spring plate 11. The upper fixing plate 8 can only move up and down between the upper die cutting edge 4 and the spring plate 11. Therefore, the design of L2 > L1 plays a role in protecting the upper punch 9 and the lower punch 21 in the mold closing state, preventing the upper punch 9 and the lower punch 21 from being crushed and deformed by gravity or other external forces, and making the punch positioning and shaping functions fail.

[0073] For the forging of the battery pack L-shaped bracket applicable to the present invention, the heightening value of the upper punch 9 is set to 3 mm; the flash thickness range is 1.9 mm to 3.1 mm. Preferably, to ensure the normal operation of the trimming die, the flash thickness is 3.1 mm; the downward pressing stroke is 2 mm; the total trimming stroke = 3 mm + 3.1 mm + 2 mm = 8.1 mm; the first distance L1 > the total trimming stroke. To ensure the normal operation of the upper trimming die and considering the machining and assembly errors of the trimming die, preferably, L1 = 10 mm; the second distance L2 > L1. To prevent the upper punch 9 and the lower punch 21 from being crushed and deformed by gravity or other external forces, preferably, L2 = 15 mm.

[0074] The specific working process of the present invention is as follows:

[0075] The manipulator clamps and places the forging to be trimmed after forging on the lower punch 21; after the forging waiting to be trimmed stabilizes, the entire upper die assembly 1 moves downward. Since the upper punch 9 is heightened, the distance between the lowermost end surface of the upper die punching head 5 and the uppermost end surface of the lower punch 21 is less than the distance between the lowermost end surface of the upper die cutting edge 4 and the uppermost end surface of the lower punch 21. Therefore, the upper punch 9 presses the product part first before the upper die cutting edge 4 to prevent the forging from moving; then the upper template 3, the upper die guide post 12, the spring plate 11, the shim 13 and the upper die cutting edge 4 continue to move downward. The upper fixing plate 8 slides on the upper die guide post 12. At this time, there is a gap between the lower end surface of the upper fixing plate 8 and the upper end surface of the upper die cutting edge 4; at the same time, several springs 10 push against the upper fixing plate 8. During the continuous downward pressing of the upper die assembly 1, the compression amount of the springs 10 increases, and several springs 10 provide a higher pressure to the upper punch 9 to correct the product part and play a shaping role; the upper die cutting edge 4 continues to move downward. Affected by the continuous downward pressing after the flash part is cut off by the upper die cutting edge 4, after separating from the product part, it falls onto the support column 14 around the lower punch 21;

[0076] After trimming is completed, the upper template 3, the upper die guide post 12, the spring plate 11, the shim 13 and the upper die cutting edge 4 rise. Since the lower end of the upper punch 9 is higher than the upper die cutting edge 4, the upper punch 9 still presses the product part on the lower punch 21. The upper die cutting edge 4 moves upward first. At this time, the gap between the upper end surface of the upper die cutting edge 4 and the lower end surface of the upper fixing plate 8 gradually decreases until the upper die cutting edge 4 abuts against the lower end surface of the upper fixing plate 8. At this time, the lowermost end of the upper die cutting edge 4 has moved above the lowermost end of the upper punch 9 and has separated from the product part. The upper punch 9 plays a role in ejecting the part to prevent the product part from being stuck on the upper die cutting edge 4; then the upper template 3, the upper die guide post 12, the spring plate 11, the shim 13 and the upper die cutting edge 4 continue to move upward, which drives the upper fixing plate 8 and the upper punch 9 to move upward together. Finally, the upper punch 9 disengages from the product part, and the equipment returns to the origin;

[0077] After that, the manipulator clamps the clamping column on the product part and clamps the product part after trimming into the cooling tank; then the manipulator clamps and removes the flash part on the support column 14 and places it in the flash storage area, and one trimming cycle ends.

[0078] In summary, the beneficial effects of the present utility model are as follows:

[0079] (1) By adopting the reverse cutting method, the order of the upper and lower dies of the traditional trimming die is reversed. The upper die cutting edge 4 is arranged on the upper die. When trimming, the upper die cutting edge 4 moves downward, which is convenient for clamping the product part into the water first after trimming is completed to ensure the water inlet temperature. Moreover, reverse cutting is more conducive to automation. It is convenient for the manipulator to clamp the product part after trimming, which can effectively improve production efficiency;

[0080] (2) The lower end of the upper die punching head 5 extends out of the die cavity 7 of the upper die cutting edge 4, which can press the product part before the upper die cutting edge 4 cuts off the flash part to prevent the forging from moving. And when the upper die assembly 1 continues to press down, the ejector punch head 6 presses against the upper die punching head 5, and the upper die punching head 5 and the lower punch 21 correct the product part to play a shaping role, improving the dimensional accuracy of the product and reducing the rejection rate of subsequent product machining. After trimming is completed, the upper die assembly 1 rises as a whole. Since the lower end of the upper die punching head 5 is higher than the upper die cutting edge 4, the upper die cutting edge 4 first disengages from the product part, and the upper die punching head 5 plays a role in ejecting the part to prevent the product part from being stuck on the upper die cutting edge 4.

[0081] All the devices selected in this application are common standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or obtained through conventional experimental methods.

[0082] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0083] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0084] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant workers can make various changes and modifications completely within the scope of the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A high-efficiency forging trimming die, characterized in that: include: An upper mold assembly (1) and a lower mold assembly (2), wherein the upper mold assembly (1) is arranged above the lower mold assembly (2); The lower die assembly (2) comprises a lower fixing plate (20) and a lower punch (21), wherein the lower punch (21) is arranged on the lower fixing plate (20); The upper die assembly (1) comprises an upper die plate (3), an upper die blade (4), an upper die punch head (5) and a top punch head (6); the top punch head (6) is arranged on the upper die plate (3) and is elastically connected to the upper die punch head (5); a die cavity (7) is provided in the upper die blade (4); the lower end of the upper die punch head (5) extends out of the die cavity (7) and is arranged directly opposite to the lower punch (21); the distance between the lowermost end surface of the upper die punch head (5) and the uppermost end surface of the lower punch (21) is smaller than the distance between the lowermost end surface of the upper die blade (4) and the uppermost end surface of the lower punch (21); the upper die punch head (5) is slidably connected to the upper die blade (4); The forged piece to be trimmed is arranged on the lower punch (21), and the forged piece to be trimmed comprises a product portion and a flash portion, the product portion is located between the upper die punch portion (5) and the lower punch (21), and the flash portion is arranged opposite to the upper die cutting edge (4).

2. A high-efficiency forging trimming die as claimed in claim 1, characterized in that: The upper die punch head (5) comprises: an upper fixing plate (8) and an upper punch (9); the upper punch (9) is arranged on the upper fixing plate (8); the lower end of the upper punch (9) protrudes out of the die cavity (7) and is arranged opposite to the lower punch (21); the upper fixing plate (8) is elastically connected to the top punch head (6).

3. A high-efficiency forging trimming die as claimed in claim 2, characterized in that: The top punch head (6) comprises a plurality of springs (10) and a spring plate (11); the upper ends of the plurality of springs (10) are connected to the upper template (3); the lower ends of the plurality of springs (10) pass through the spring plate (11) and abut against the upper fixing plate (8); and the spring plate (11) is arranged on the upper template (3).

4. A high-efficiency forging trimming die as claimed in claim 3, characterized in that: The upper die assembly (1) further comprises an upper die guide column (12), the upper end of which is arranged on the upper die plate (3), the lower end of which passes through the spring plate (11) and the upper fixed plate (8) in sequence and extends into the upper die cutting edge (4), and the upper fixed plate (8) is slidably connected to the upper die guide column (12).

5. A high-efficiency forging trimming die as claimed in claim 1, characterized in that: The upper die assembly (1) further comprises two shims (13), the two shims (13) being respectively arranged at the two ends of the upper die blade (4), and the two ends of each shim (13) being respectively connected to the upper die blade (4) and the upper die plate (3).

6. A high-efficiency forging trimming die as claimed in claim 1, characterized in that: It also includes a plurality of support columns (14), the lower ends of which are connected to the lower fixing plate (20), and the plurality of support columns (14) are arranged around a circle of the lower punch (21) and are located below the flash portion.

7. A high-efficiency forging trimming die as claimed in claim 3, characterized in that: The lower mold assembly (2) also includes a lower mold plate (15) and a lower mold guide column (16), wherein the lower mold guide column (16) is arranged on the lower mold plate (15), and the upper end of the lower mold guide column (16) passes through the lower fixed plate (20) and extends into the upper mold blade (4), and the lower fixed plate (20) is arranged on the lower mold plate (15).

8. A high-efficiency forging trimming die as claimed in claim 7, characterized in that: The lower die guide pin (16) comprises a first part (17) and a second part (18) which are connected to each other, the diameter of the first part (17) is smaller than the diameter of the second part (18), a first step surface (19) is formed at the connection between the first part (17) and the second part (18), the first part (17) extends into the upper die cutting edge (4), and the second part (18) passes through the lower fixed plate (20).

9. A high-efficiency forging trimming die as claimed in claim 8, characterized in that: There is a first distance L1 between the first step surface (19) and the lower end surface of the upper die blade (4), and there is a second distance L2 between the upper end surface of the upper fixed plate (8) and the lower end surface of the spring plate (11), and L2>L1.

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