Rapid forging and edge cutting device for valve blank and edge cutting method of rapid forging and edge cutting device

Abstract

The invention belongs to the technical field of valve production, and particularly relates to a valve blank quick forging and trimming device which comprises an upper die assembly, a lower die assembly and a jacking assembly. The upper die assembly is fixedly arranged at the lower end of a lower pressing rod of the edge cutting machine and comprises an edge cutting knife matched with a valve blank in shape. The lower die assembly is fixedly arranged on the workbench, and a valve blank piece discharging hole is formed in the lower die assembly. The jacking assembly is used for obliquely jacking flashes left on the lower die assembly after edge cutting towards the waste discharging side. Compared with the prior art, the flash retained on the lower die assembly after edge cutting is obliquely jacked up towards the waste discharging side through the jacking assembly, the flash can naturally and obliquely slide to the waste discharging side under the gravity effect, then waste discharging is completed, waste discharging of non-light materials can be completed without additional operation of an operator, the production efficiency is improved, and the production cost is reduced. And labor is liberated.

Description

Technical Field

[0001] The invention belongs to the technical field of valve production, and in particular relates to a rapid forging and trimming device for a valve blank and a trimming method thereof. Background Art

[0002] The valve body is a major component in the valve. There are different mechanical manufacturing methods according to the pressure level, such as casting, forging, etc. The valve body of medium and low pressure specifications is usually produced by casting, and the valve body of medium and high pressure specifications is produced by forging. The valve body, valve core and valve seat seal ring form a seal together to effectively withstand the medium pressure. The material of the valve body is selected from different metal materials according to different process media. Commonly used materials include gray cast iron, ductile iron and carbon steel. Among them, gray cast iron valves are used in various fields of industry due to their low price and wide application range. They are usually used in water, steam, oil and gas as the medium, and are widely used in chemical industry, printing and dyeing, oil chemical, textile and many other industrial products that have little or no impact on iron pollution. Applicable to low-pressure valves with working temperature between -15 and 200℃ and nominal pressure P≤1.6MPa; Ductile iron is a kind of cast iron. The change of the internal structure of this metal makes its mechanical properties better than ordinary gray cast iron without damaging other properties. It is suitable for medium and low pressure valves with working temperature between -30 and 350℃ and nominal pressure P≤4.0MPa. Carbon steel is suitable for water, seawater, steam, air, gas, oil, etc. It is suitable for medium and high pressure valves with working temperature between -29 and 425℃. Among them, 16Mn and 30Mn have working temperature between -40 and 400℃ and are often used to replace ASTM A105.

[0003] Metal valves can be made by mechanical processing, and metal valve blanks are mainly obtained by casting, hot extrusion, welding and other methods. After the valve blank is cast and extruded, there will be flash at the die seam and both ends of the valve. At present, the flash of the valve blank can be removed on the trimming die, such as an adjustable hot forging valve trimming die with patent number CN211413310U. This method of removing flash solves the problem of valve blank trimming, but how to remove the flash of the valve blank that cannot be blown away by the air nozzle due to its heavy weight from the trimming die? Previously, there were mainly manual removal or cylinder push-out methods, but all of the above methods had major problems, because the valve blank was pressed down on the lower die by the upper die to cut off the flash, so the flash and the lower die fit closely, it was difficult to remove the flash manually and even if it was removed, it would take a long time, with low production efficiency, large labor force and high cost. In addition, the method of direct push-out with a cylinder was adopted, because the flash was uneven, especially the edge position would be sharp, and it would scratch the surface of the lower die if it was directly pushed out on the surface of the lower die, and repeated scratching would affect the quality of the lower die and the effect of trimming. Summary of the invention

[0004] The purpose of the present invention is to provide a valve blank rapid forging trimming device and trimming method in view of the above-mentioned technical problems, so as to achieve the effect of completing the waste unloading of non-light materials without the operator having to perform additional operations, thereby improving production efficiency and liberating labor.

[0005] In view of this, the present invention provides a rapid forging and trimming device for a valve blank, comprising:

[0006] An upper die assembly, wherein the upper die assembly is fixedly arranged at the lower end of the lower pressure rod of the trimming machine, and the upper die assembly comprises a trimming knife matching the shape of the valve blank;

[0007] A lower die assembly, wherein the lower die assembly is fixedly arranged on a workbench and a valve blank blank discharge hole is provided on the lower die assembly;

[0008] The lifting component is used to lift the flash retained on the lower die component after trimming towards the waste material unloading side.

[0009] In the present technical scheme, the valve blank with flash is placed on the opening of the discharge hole of the lower mold assembly, and the flash is placed on the surface of the lower mold assembly. The lower pressure rod brings the upper mold assembly downward to cause the valve blank to be cut by the trimming knife and then discharged from the discharge hole. The flash retained on the lower mold assembly after trimming is tilted and lifted toward the waste discharge side by the lifting assembly. The flash can be naturally tilted and slid toward the waste discharge side under the action of gravity, thereby completing the discharge of the waste. The waste discharge of non-lightweight materials can be completed without the operator having to perform additional operations, thereby improving production efficiency and liberating labor.

[0010] Furthermore, the lifting assembly includes:

[0011] A first lifting pin, wherein two first lifting pins are provided, and the two first lifting pins are slidably arranged in the lower mold assembly and are respectively arranged on both sides of the blanking hole;

[0012] A second lifting pin, wherein two second lifting pins are provided, the two second lifting pins are slidably arranged in the lower mold assembly and are respectively arranged on both sides of the discharge hole, the two first lifting pins and the two second lifting pins form four vertices of a rectangle arranged around the outer periphery of the discharge hole, and the two first lifting pins are closer to the waste discharge side than the two second lifting pins;

[0013] A lifting power source is used to slide the first lifting pin and the second lifting pin upwardly and beyond the lower surface of the lower mold assembly at the same time, and the sliding distance of the two first lifting pins is smaller than the sliding distance of the two second lifting pins.

[0014] Furthermore, the lifting power source includes:

[0015] The lifting frame is provided with two, and the two lifting frames are respectively used to drive the first lifting pin and the second lifting pin to slide up and down, the lifting frame is fixedly arranged in the lower mold assembly and the two lifting frames are respectively located on both sides of the discharge hole and opposite to the positions of the first lifting pin and the second lifting pin, and each lifting frame is slidably penetrated with a lifting slide rod, and two fixed plates are fixedly arranged on the lifting frame, and an L-shaped bent rod is rotatably arranged on each fixed plate, and the bent rod includes a first rod section and a second rod section, and the first rod section and the second rod section are respectively provided with a first long groove and a second long groove, and the first lifting pin and the second lifting pin are The lower ends of the lifting pins are vertically fixedly connected with a first connecting column, and two second connecting columns are arranged at intervals on the lifting slide rod, the first connecting column is slidably arranged in the first long groove, and the second connecting column is slidably arranged in the second long groove, and the distance from the rotation hinge point of the bent rod on the lifting frame controlling the first lifting pin and the fixed plate to the first lifting pin is greater than the distance from the rotation hinge point of the bent rod on the lifting frame controlling the second lifting pin and the fixed plate to the first lifting pin, and the length of the first rod section of the bent rod on the lifting frame controlling the first lifting pin is longer than the length of the first rod section of the bent rod on the lifting frame controlling the second lifting pin;

[0016] A driving cylinder is fixedly arranged on the edge trimmer and is used to drive the jacking slide rod to slide laterally on the jacking frame.

[0017] In the present technical scheme, the driving cylinder is started, and when cutting the flash, the first lifting pin and the second lifting pin are both in the lower mold assembly and the upper ends are flush with the surface of the lower mold assembly. When the flash is cut off and the flash needs to be unloaded, the system automatically starts the driving cylinder to make the lifting slide rods on the two lifting frames controlling the first lifting pin and the second lifting pin slide laterally synchronously, so that the bent rod rotates, thereby driving the first lifting pin and the second lifting pin to slide upward. Because the distance from the rotation hinge point of the bent rod on the lifting frame controlling the first lifting pin and the fixed plate to the first lifting pin is greater than the distance from the rotation hinge point of the bent rod on the lifting frame controlling the second lifting pin and the fixed plate to the first lifting pin, the length of the first rod section of the bent rod on the lifting frame controlling the first lifting pin is longer than the distance from the rotation hinge point of the bent rod on the lifting frame controlling the second lifting pin and the fixed plate to the first lifting pin. The length of the first rod section of the bent rod on the lifting frame of the lifting pin is such that, when the two lifting slides interact horizontally at the same distance, the distance that the second lifting pin rises out of the surface of the lower mold assembly is much greater than that of the first lifting pin, resulting in a situation in which the flash is inclined toward the waste material unloading side. If the edge of the flash is sharp and the burrs are small, it can slide smoothly from the waste material unloading side. This inclined lifting and flying edge sliding method can make the flash slide down in mid-air, reduce scratches on the lower mold, improve trimming accuracy and the service life of the mold, and under the same power source and the same time, the lifting distances of the first lifting pin and the second lifting pin are different, that is, the rising speeds of the two ends of the flash are different, and the flash on the corresponding side of the second lifting pin rises faster, which can provide a power for the flash to move downward and promote the flash to slide down.

[0018] Furthermore, the lifting assembly also includes a rear lifting structure, which is used to enable the first lifting pin to continue to lift up after the first lifting pin stops lifting up, providing initial power for the flash to slide toward the waste unloading side.

[0019] Furthermore, the rear roof structure includes:

[0020] A synchronization plate connected to the output end of the driving cylinder,

[0021] A first connecting block, which is fixedly arranged on a side of the synchronization plate away from the driving cylinder and is fixedly connected to an end of a lifting slide rod controlling a second lifting pin;

[0022] The second connecting block is fixedly arranged on the side of the synchronization plate away from the driving cylinder. The second connecting block includes two parts, a left part and a right part, which are connected by a spring in the middle. The side of the second connecting block away from the synchronization plate is fixedly connected to the end of the lifting slide rod that controls the first lifting pin. A limiting ring is arranged on the lifting slide rod that controls the first lifting pin to limit the lateral sliding of the lifting slide rod.

[0023] When the piston rod of the driving cylinder extends out to drive the two lifting slide rods to move so that the first lifting pin and the second lifting pin are lifted up a certain distance, the limiting ring of the lifting slide rod that controls the first lifting pin slides to the end of the lifting frame so that the lifting slide rod stops moving laterally, and the first lifting pin stops lifting upward, but at this time the piston rod of the driving cylinder continues to extend, and the driving cylinder causes the synchronous plate to continue to move laterally, and the part of the second connecting block close to one side of the synchronous plate will continue to move laterally, but the right side part of the second connecting block will not move, and the displacement of the left side part of the second connecting block will be absorbed by the spring. At this time, the first lifting pin will not continue to push up, and the first connecting block will continue to move to cause the second lifting pin to continue to push up, thereby providing initial power for the flash to slide to the waste material unloading side, and can better enable the flash to slide out of the material. The spring of the second connecting block uses a spring with larger spring force. When the lifting slide rod has no limiting resistance of the limiting ring, the second connecting block can move as a whole so that the spring is not compressed or elongated.

[0024] Furthermore, the lower mold assembly includes a first lower mold plate and a second lower mold plate, and the lifting assembly is arranged in the second lower mold plate.

[0025] In the technical solution, the first lower mold plate can be replaced according to the specific shape of the valve body, while the second lower mold plate can be used universally, thereby improving the versatility of the lower mold assembly.

[0026] Furthermore, the first lifting pin and the second lifting pin include multiple sections in the length direction, each section is connected by a threaded structure, and the second lower template includes two upper and lower parts that are detachably connected.

[0027] In this technical solution, the assembly of the lifting component in the lower mold component is facilitated.

[0028] Furthermore, a downward sliding slope is arranged on the lower die assembly near the waste material discharge side, and an anti-hanging assembly is also arranged on the lower die assembly, and the anti-hanging assembly is used to prevent the flash from sliding out of the lower die assembly.

[0029] Furthermore, the anti-hanging component includes:

[0030] An anti-hanging strip, a first anti-hanging groove is provided on the lower mold assembly near the waste material discharge side, the first anti-hanging groove is along the downward slope, the anti-hanging strip is slidably arranged in the first anti-hanging groove, a widened section is extended from the upper end of the anti-hanging strip, the widened section is slidably arranged on the surface of the downward slope, anti-hanging pins are arranged on both sides of the anti-hanging strip, and guide grooves parallel to the inclination direction of the downward slope are provided on the groove walls on both sides of the first anti-hanging groove, and the anti-hanging pins are slidably arranged in the guide grooves;

[0031] A transverse driving plate, a second anti-hanging groove is provided in the second lower template, a transverse driving plate is slidably arranged in the second anti-hanging groove, a straight groove and an oblique groove are provided on the transverse driving plate, the lower end of the anti-hanging strip is slidingly arranged in the straight groove, the angle between the oblique groove and the straight groove is 60°, and an anti-hanging driving shaft is vertically arranged on the lifting slide rod on the lifting frame that controls the first lifting pin, and the anti-hanging driving shaft is passed through the oblique groove and is slidably connected to the oblique groove.

[0032] In the present technical scheme, some flash edges may get hung on the sliding slope during the sliding process due to their sharp burrs, thus affecting the cutting edge of the next valve blank. During cutting edge, the transverse driving plate of the anti-hanging assembly is located on the outside. When the driving cylinder drives the lifting slide rod to lift the flash edge, the lifting slide rod moves and moves the transverse driving plate inward. When the lifting slide rod that lifts the flash edge slides in the opposite direction and resets, the anti-hanging driving shaft moves laterally with the lifting slide rod, so that the transverse driving plate moves in the second anti-hanging groove toward the waste unloading side. Then, the anti-hanging strip moves outward and downward along the guide groove with the anti-hanging strip, that is, the widened section of the anti-hanging strip always moves along the surface of the sliding slope, thereby driving the flash edge hanging on the sliding slope to slide smoothly down through friction, thereby discharging the material from the waste unloading side. This structure can also protect the sliding slope from being scratched by the flash edge hanging on the sliding slope due to excessively sharp burrs.

[0033] Further, the trimming method includes:

[0034] S1: trimming, placing the valve blank with flash on the opening of the blanking hole of the lower die assembly, with the flash on the surface of the lower die assembly, and the lower pressure rod drives the upper die assembly downward to cut the valve blank by the trimming knife and then discharge it from the blanking hole;

[0035] S2: tilting and lifting and sliding down, the lifting component tilts and lifts the flash left on the lower die component after trimming toward the waste unloading side, so that the flash naturally tilts and slides toward the waste unloading side under the action of gravity;

[0036] S3: The rear top pushes down, and after the first top lift pin stops pushing up, the first top lift pin continues to push up to provide initial power for the flash to slide down to the waste material unloading side;

[0037] S4: Anti-hanging and sliding promotion. The anti-hanging component helps the flash edge that has not slid out of the downward slope to slide out of the lower mold component.

[0038] The beneficial effects of the present invention are:

[0039] 1. Place the valve blank with flash on the opening of the discharge hole of the lower die assembly, with the flash resting on the surface of the lower die assembly. The lower pressure rod brings the upper die assembly downward to make the valve blank be cut by the trimming knife and then discharged from the discharge hole. The flash retained on the lower die assembly after trimming is tilted and lifted toward the waste discharge side by the lifting assembly, so that the flash can naturally tilt and slide toward the waste discharge side under the action of gravity, thereby completing the discharge of the waste. The operator does not need to perform additional operations to complete the discharge of non-lightweight waste, thereby improving production efficiency and liberating labor.

[0040] 2. The method of tilting the flash to slide down can make the flash slide down in mid-air, reduce scratches on the lower die, improve the trimming accuracy and the service life of the die, and under the same power source and the same time, the top distances of the first lifting pin and the second lifting pin are different, that is, the rising speeds of the two ends of the flash are different. The flash on the corresponding side of the second lifting pin rises faster, which can provide a power for the flash to move downward and promote the flash to slide down.

[0041] 3. The rear lifting structure can make the first lifting pin continue to push up after it stops pushing up, providing initial power for the flash to slide to the waste unloading side.

[0042] 4. The anti-hanging strip of the anti-hanging assembly can move outward and downward along the guide groove, so that the widened section of the anti-hanging strip always moves along the surface of the sliding slope, so that the flash hanging on the sliding slope can slide smoothly through the friction force, thereby discharging the material from the waste material unloading side, avoiding affecting the cutting edge of the next valve blank, and the structure can also protect the sliding slope from being scratched by the flash hanging on the sliding slope due to overly sharp burrs. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 is a three-dimensional view of the present invention on a trimming machine;

[0044] Figure 2 It is a three-dimensional picture of the valve blank with flash in the lower die assembly;

[0045] Figure 3 It is a three-dimensional picture of the flash in the lower die assembly;

[0046] Figure 4 It is a three-dimensional picture of the lower die assembly after the flash is tilted and lifted up;

[0047] Figure 5 It is a three-dimensional picture of the flash hanging on the downward slope;

[0048] Figure 6 It is a three-dimensional picture of the flash hanging on the downward slope;

[0049] Figure 7 It is an exploded view of the lower die assembly;

[0050] Figure 8 It is an exploded view of the second lower template and the jacking assembly;

[0051] Fig. 9 It is a stereogram of the second lower template;

[0052] Fig.10 is a three-dimensional view of the jacking assembly;

[0053] Fig.11 is a cross-sectional view of the jacking assembly;

[0054] Fig.12 yes Fig.11 A partial enlarged view of the middle A;

[0055] Fig.13 It is an exploded view of the jacked-up assembly;

[0056] Fig.14 It is a cross-sectional view of the second lower template.

[0057] The symbols in the figure are:

[0058] 1. Upper die assembly; 2. Trimming machine; 3. Lower pressure rod; 4. Trimming knife; 5. Valve blank; 6. Lower die assembly; 7. Workbench; 8. Lifting assembly; 9. Waste material discharge side; 10. Discharge hole; 11. First lifting pin; 12. Second lifting pin; 13. Lifting frame; 14. Lifting slide rod; 15. Fixed plate; 16. Bending rod; 17. First rod section; 18. Second rod section; 19. First long slot; 20. Second long slot; 21. First connecting column; 22. Second connecting column; 23. Driving cylinder; 24. rear top structure; 25. flash; 26. synchronization plate; 27. first connecting block; 28. second connecting block; 29. ​​spring; 30. limiting ring; 31. first lower template; 32. second lower template; 33. downward sliding slope; 34. anti-hanging component; 35. anti-hanging strip; 36. first anti-hanging groove; 37. widening section; 38. anti-hanging pin shaft; 39. guide groove; 40. transverse driving plate; 41. second anti-hanging groove; 42. straight groove; 43. oblique groove; 44. anti-hanging driving shaft. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0060] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0061] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0062] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0063] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0064] Embodiment 1

[0065] like Figure 1-5 As shown, a rapid forging and trimming device for a valve blank 5 comprises:

[0066] An upper die assembly 1, wherein the upper die assembly 1 is fixedly arranged at the lower end of a lower pressure rod 3 of a trimming machine 2, and the upper die assembly 1 comprises a trimming knife 4 matching the shape of a valve blank 5;

[0067] A lower die assembly 6, wherein the lower die assembly 6 is fixedly disposed on a workbench 7, and a blanking hole 10 for the valve blank 5 is formed on the lower die assembly 6;

[0068] The lifting assembly 8 is used to tilt the flash 25 retained on the lower die assembly 6 after trimming toward the waste material discharge side 9.

[0069] The valve blank 5 with the flash 25 is placed on the opening of the discharge hole 10 of the lower mold assembly 6, and the flash 25 is placed on the surface of the lower mold assembly 6. The lower pressure rod 3 brings the upper mold assembly 1 to press down so that the valve blank 5 is cut by the trimming knife 4 and then discharged from the discharge hole 10. The flash 25 retained on the lower mold assembly 6 after trimming is tilted and lifted up toward the waste discharge side 9 through the lifting assembly 8. The flash 25 can be naturally tilted and slid toward the waste discharge side 9 under the action of gravity, thereby completing the discharge of the waste. The waste discharge of non-lightweight materials can be completed without the operator having to perform additional operations, thereby improving production efficiency and liberating labor.

[0070] Embodiment 2

[0071] like Figure 6-11 As shown, the lifting assembly 8 includes:

[0072] A first lifting pin 11, wherein two first lifting pins 11 are provided, and the two first lifting pins 11 are slidably disposed in the lower mold assembly 6 and are respectively disposed on both sides of the blanking hole 10;

[0073] A second lifting pin 12, wherein two second lifting pins 12 are provided, and the two second lifting pins 12 are slidably arranged in the lower mold assembly 6 and are respectively arranged on both sides of the discharge hole 10, and the two first lifting pins 11 and the two second lifting pins 12 form four vertices of a rectangle arranged around the outer periphery of the discharge hole 10, and the two first lifting pins 11 are closer to the waste discharge side 9 than the two second lifting pins 12;

[0074] A lifting power source is used to carry the first lifting pin 11 and the second lifting pin 12 to slide upward simultaneously beyond the lower surface of the lower mold assembly 6, and the sliding distance of the two first lifting pins 11 is smaller than the sliding distance of the two second lifting pins 12.

[0075] The lifting power source comprises:

[0076] A lifting frame 13 is provided with two, and the two lifting frames 13 are respectively used to drive the first lifting pin 11 and the second lifting pin 12 to slide up and down. The lifting frame 13 is fixedly arranged in the lower mold assembly 6 and the two lifting frames 13 are respectively located on both sides of the discharge hole 10 and opposite to the positions of the first lifting pin 11 and the second lifting pin 12. A lifting slide rod 14 is slidably penetrated on each lifting frame 13, and two fixed plates 15 are fixedly arranged on the lifting frame 13. An L-shaped bent rod 16 is rotatably arranged on each fixed plate 15. The bent rod 16 includes a first rod segment 17 and a second rod segment 18. The first rod segment 17 and the second rod segment 18 are respectively provided with a first long groove 19 and a second long groove 20. The first lifting pin 11 and the second lifting pin 12 are respectively provided with a first long groove 19 and a second long groove 20. The lower ends of the lifting rods 12 are vertically fixedly connected with a first connecting column 21, and two second connecting columns 22 are arranged at intervals on the lifting slide rod 14. The first connecting column 21 is slidably arranged in the first long groove 19, and the second connecting column 22 is slidably arranged in the second long groove 20. The distance from the rotating hinge point of the bent rod 16 on the lifting frame 13 of the first lifting pin 11 and the fixed plate 15 to the first lifting pin 11 is greater than the distance from the rotating hinge point of the bent rod 16 on the lifting frame 13 of the second lifting pin 12 and the fixed plate 15 to the first lifting pin 11. The length of the first rod segment 17 of the bent rod 16 on the lifting frame 13 of the first lifting pin 11 is longer than the length of the first rod segment 17 of the bent rod 16 on the lifting frame 13 of the second lifting pin 12.

[0077] The driving cylinder 23 is fixedly arranged on the edge trimmer 2 and is used for driving the jacking slide rod 14 to slide laterally on the jacking frame 13 .

[0078] When the driving cylinder 23 is started and the flash 25 is cut, the first lifting pin 11 and the second lifting pin 12 are both in the lower mold assembly 6 and the upper ends are flush with the surface of the lower mold assembly 6. When the flash 25 is cut off, the flash 25 needs to be unloaded, and the system automatically starts the driving cylinder 23 to make the lifting slide rods 14 on the two lifting frames 13 that control the first lifting pin 11 and the second lifting pin 12 slide laterally synchronously, so that the bent rod 16 rotates, thereby driving the first lifting pin 11 and the second lifting pin 12 to slide upward. Because the distance from the rotating hinge point of the bent rod 16 on the lifting frame 13 that controls the first lifting pin 11 and the fixed plate 15 to the first lifting pin 11 is greater than the distance from the rotating hinge point of the bent rod 16 on the lifting frame 13 that controls the second lifting pin 12 and the fixed plate 15 to the first lifting pin 11, the length of the first rod section 17 of the bent rod 16 on the lifting frame 13 that controls the first lifting pin 11 is longer. In order to control the length of the first rod section 17 of the bent rod 16 on the lifting frame 13 of the second lifting pin 12, when the two lifting slides 14 interact horizontally at the same distance, the distance that the second lifting pin 12 rises out of the surface of the lower mold assembly 6 is much greater than that of the first lifting pin 11, thus forming a situation in which the flash 25 is inclined toward the waste unloading side 9. If the edge of the flash 25 is sharp and the burrs are small, it can slide smoothly from the waste unloading side 9. This inclined lifting and flying edge 25 sliding down method can make the flash 25 slide down in mid-air, reduce scratches on the lower mold, improve the trimming accuracy and the service life of the mold, and under the same power source and the same time, the first lifting pin 11 and the second lifting pin 12 have different lifting distances, that is, the rising speeds of the two ends of the flash 25 are different, and the flash 25 on the corresponding side of the second lifting pin 12 rises faster, which can provide a power for the flash 25 to move downward and promote the sliding of the flash 25.

[0079] Embodiment 3

[0080] like Figure 10-12 As shown, the lifting assembly 8 also includes a rear lifting structure 24, and the rear lifting structure 24 is used to enable the first lifting pin 11 to stop lifting and then continue to lift to provide initial power for the flash 25 to slide toward the waste unloading side 9.

[0081] The rear top structure 24 comprises:

[0082] The synchronous plate 26 is connected to the output end of the driving cylinder 23.

[0083] A first connecting block 27, which is fixedly disposed on a side of the synchronization plate 26 away from the driving cylinder 23 and is fixedly connected to an end of the lifting slide rod 14 that controls the second lifting pin 12;

[0084] The second connecting block 28 is fixedly arranged on the side of the synchronization plate 26 away from the driving cylinder 23. The second connecting block 28 includes two parts, a left part and a right part, which are connected in the middle by a spring 29. The side of the second connecting block 28 away from the synchronization plate 26 is fixedly connected to the end of the lifting slide rod 14 that controls the first lifting pin 11. A limiting ring 30 is arranged on the lifting slide rod 14 that controls the first lifting pin 11 to limit the lateral sliding of the lifting slide rod 14.

[0085] When the piston rod of the driving cylinder 23 extends to drive the two lifting slide rods 14 to move so that the first lifting pin 11 and the second lifting pin 12 are lifted up a certain distance, the limit ring 30 of the lifting slide rod 14 of the first lifting pin 11 is controlled to slide to the end of the lifting frame 13 so that the lifting slide rod 14 stops moving horizontally, and the first lifting pin 11 stops lifting upward, but at this time the piston rod of the driving cylinder 23 continues to extend, and the driving cylinder 23 causes the synchronous plate 26 to continue to move horizontally, and the part of the second connecting block 28 close to the synchronous plate 26 continues to move horizontally, but the second connecting block 2 8 The right side portion does not move, and the displacement of the left side portion of the second connecting block 28 is absorbed by the spring 29. At this time, the first lifting pin 11 will not continue to push up, and the first connecting block 27 will continue to move to make the second lifting pin 12 continue to push up, thereby providing initial power for the flash 25 to slide toward the waste unloading side 9, which can better enable the flash 25 to slide out of the material. The spring 29 of the second connecting block 28 uses a spring 29 with a larger spring force. When the lifting slide rod 14 has no limiting resistance of the infinite ring 30, the second connecting block 28 can move as a whole so that the spring 29 has no compression or elongation deformation.

[0086] The lower mold assembly 6 includes a first lower mold plate 31 and a second lower mold plate 32, and the jacking assembly 8 is arranged in the second lower mold plate 32. The first lower mold plate 31 can be replaced according to the specific valve body shape, while the second lower mold plate 32 is universal, thereby improving the universality of the lower mold assembly 6.

[0087] The first lifting pin 11 and the second lifting pin 12 include multiple sections in the length direction, each section is connected by a threaded structure, and the second lower mold plate 32 includes two detachably connected upper and lower parts, so as to facilitate the assembly of the lifting assembly 8 in the lower mold assembly 6.

[0088] A downward slope 33 is provided on the lower die assembly 6 near the waste material discharge side 9 , and an anti-hanging assembly 34 is also provided on the lower die assembly 6 , and the anti-hanging assembly 34 is used to prevent the flash 25 from sliding out of the lower die assembly 6 .

[0089] Embodiment 4

[0090] like Figure 13-14 As shown,

[0091] The anti-hanging component 34 includes:

[0092] The anti-hanging strip 35 has a first anti-hanging groove 36 formed on the lower mold assembly 6 near the waste material discharge side 9. The first anti-hanging groove 36 extends along the downward slope 33. The anti-hanging strip 35 is slidably arranged in the first anti-hanging groove 36. A widened section 37 extends from the upper end of the anti-hanging strip 35. The widened section 37 is slidably arranged on the surface of the downward slope 33. Anti-hanging pins 38 are arranged on both sides of the anti-hanging strip 35. The groove walls on both sides of the first anti-hanging groove 36 have guide grooves 39 parallel to the inclination direction of the downward slope 33. The anti-hanging pins 38 are slidably arranged in the guide grooves 39.

[0093] A transverse driving plate 40, a second anti-hanging groove 41 is provided in the second lower template 32, a transverse driving plate 40 is slidably arranged in the second anti-hanging groove 41, a straight groove 42 and an oblique groove 43 are provided on the transverse driving plate 40, the lower end of the anti-hanging strip 35 is slidingly arranged in the straight groove 42, the angle between the oblique groove 43 and the straight groove 42 is 60°, an anti-hanging driving shaft 44 is vertically arranged on the lifting slide rod 14 on the lifting frame 13 that controls the first lifting pin 11, and the anti-hanging driving shaft 44 is penetrated in the oblique groove 43 and is slidably connected to the oblique groove 43.

[0094] Some of the flash edges 25 may hang on the downward slope 33 during the sliding process due to the sharp burrs, thereby affecting the trimming of the next valve blank 5. Figure 5 When trimming, the transverse driving plate 40 of the anti-hanging assembly 34 is located at the outside. When the driving cylinder 23 drives the lifting slide rod 14 to lift the flying edge 25, the lifting slide rod 14 moves with the transverse driving plate 40 to move inward. When the lifting slide rod 14 slides back and resets to lift the flying edge 25, the anti-hanging driving shaft 44 moves laterally with the lifting slide rod 14, so that the transverse driving plate 40 moves toward the waste material discharge side 9 in the second anti-hanging groove 41, and then moves the anti-hanging strip 35 outward and downward along the guide groove 39, that is, the widened section 37 of the anti-hanging strip 35 always moves along the surface of the downward slope 33, so that the flash 25 hanging on the downward slope 33 is smoothly slid down by the friction force, so as to discharge the material from the waste material discharge side 9. This structure can also protect the downward slope 33 from being scratched by the flash 25 hanging on the downward slope 33 due to the excessively sharp burrs.

[0095] Trimming methods include:

[0096] S1: trimming, placing the valve blank 5 with the flash 25 at the opening of the blanking hole 10 of the lower die assembly 6, with the flash 25 resting on the surface of the lower die assembly 6, and the lower pressure rod 3 pressing the upper die assembly 1 downward so that the valve blank 5 is cut by the trimming knife 4 and discharged from the blanking hole 10;

[0097] S2: tilting and lifting and sliding down, the lifting component 8 tilts and lifts the flash 25 remaining on the lower die component 6 after trimming toward the waste material discharge side 9, so that the flash 25 naturally tilts and slides toward the waste material discharge side 9 under the action of gravity;

[0098] S3: the rear top slides down, and after the first top lifting pin 11 stops lifting, the first top lifting pin 11 continues to lift up to provide initial power for the flash 25 to slide toward the waste material discharge side 9;

[0099] S4: Anti-hanging and sliding promotion, the anti-hanging component 34 helps the flash 25 that has not slid out of the downward sliding slope 33 to slide out of the lower mold component 6.

[0100] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A rapid forging and trimming device for a valve blank (5), characterized in that ,include: An upper die assembly (1), wherein the upper die assembly (1) is fixedly arranged at the lower end of a lower pressure rod (3) of a trimming machine (2), and the upper die assembly (1) comprises a trimming knife (4) matching the shape of a valve blank (5); A lower die assembly (6), wherein the lower die assembly (6) is fixedly arranged on a workbench (7), and a discharge hole (10) for a valve blank (5) is provided on the lower die assembly (6); A lifting component (8) is used to tilt and lift the flash (25) retained on the lower die component (6) after trimming toward the waste material discharge side (9).

2. A rapid forging and trimming device for a valve blank (5) according to claim 1, characterized in that: The lifting assembly (8) comprises: A first lifting pin (11), wherein two first lifting pins (11) are provided, and the two first lifting pins (11) are slidably arranged in the lower mold assembly (6) and are respectively arranged on both sides of the discharge hole (10); A second lifting pin (12), wherein two second lifting pins (12) are provided, the two second lifting pins (12) are slidably arranged in the lower mold assembly (6) and are respectively arranged on both sides of the discharge hole (10), the two first lifting pins (11) and the two second lifting pins (12) form four vertices of a rectangle arranged around the outer periphery of the discharge hole (10), and the two first lifting pins (11) are closer to the waste discharge side (9) than the two second lifting pins (12); A lifting power source is provided, wherein the lifting power source is used to simultaneously slide the first lifting pin (11) and the second lifting pin (12) upwards beyond the lower surface of the lower mold assembly (6), and the sliding distance of the two first lifting pins (11) is smaller than the sliding distance of the two second lifting pins (12).

3. A rapid forging and trimming device for a valve blank (5) according to claim 2, characterized in that: The lifting power source comprises: A lifting frame (13), wherein two lifting frames (13) are provided, and the two lifting frames (13) are respectively used to drive the first lifting pin (11) and the second lifting pin (12) to slide up and down, the lifting frame (13) is fixedly arranged in the lower mold assembly (6), and the two lifting frames (13) are respectively located on both sides of the discharge hole (10) and opposite to the positions of the first lifting pin (11) and the second lifting pin 1 (2), each lifting frame (13) is slidably penetrated with a lifting slide rod (14), two fixed plates (15) are fixedly arranged on the lifting frame (13), and an L-shaped bent rod (16) is rotatably arranged on each fixed plate (15), and the bent rod (16) includes a first rod section (17) and a second rod section (18), and the first rod section (17) and the second rod section (18) are respectively provided with a first long groove (19) and a second long groove (20), and the first lifting pin (11) and the second lifting pin (1 ... 2) The lower ends are vertically fixedly connected with a first connecting column (21), and two second connecting columns (22) are arranged on the lifting slide rod (14) at intervals. The first connecting column (21) is slidably arranged in the first long groove (19), and the second connecting column (22) is slidably arranged in the second long groove (20). The distance from the rotation hinge point of the bent rod (16) on the lifting frame (13) that controls the first lifting pin (11) and the fixed plate (15) to the first lifting pin (11) is greater than the distance from the rotation hinge point of the bent rod (16) on the lifting frame (13) that controls the second lifting pin (12) and the fixed plate (15) to the first lifting pin (11). The length of the first rod section (17) of the bent rod (16) on the lifting frame (13) that controls the first lifting pin (11) is longer than the length of the first rod section (17) of the bent rod (16) on the lifting frame (13) that controls the second lifting pin (12); A driving cylinder (23) is fixedly arranged on the edge trimming machine (2) and is used to drive the jacking slide rod (14) to slide laterally on the jacking frame (13).

4. A rapid forging and trimming device for a valve blank (5) according to claim 3, characterized in that: The lifting assembly (8) further comprises a rear lifting structure (24), wherein the rear lifting structure (24) is used to enable the first lifting pin (11) to continue to lift after the first lifting pin (11) stops lifting, providing initial force for the flash (25) to slide toward the waste material discharge side (9).

5. A rapid forging and trimming device for a valve blank (5) according to claim 4, characterized in that: The rear top structure (24) comprises: A synchronization plate (26), wherein the synchronization plate (26) is connected to an output end of the driving cylinder (23), A first connecting block (27), the first connecting block (27) being fixedly arranged on a side of the synchronization plate (26) away from the driving cylinder (23) and being fixedly connected to an end of a lifting slide rod (14) controlling a second lifting pin (12); A second connecting block (28), the second connecting block (28) is fixedly arranged on a side of the synchronous plate (26) away from the driving cylinder (23), the second connecting block (28) includes a left part and a right part, which are connected in the middle by a spring (29), the side of the second connecting block (28) away from the synchronous plate (26) is fixedly connected to the end of the lifting slide rod (14) controlling the first lifting pin (11), and a limiting ring (30) is arranged on the lifting slide rod (14) controlling the first lifting pin (11) for limiting the lateral sliding of the lifting slide rod (14).

6. A rapid forging and trimming device for a valve blank (5) according to claim 5, characterized in that: The lower mold assembly (6) comprises a first lower mold plate (31) and a second lower mold plate (32), and the lifting assembly (8) is arranged in the second lower mold plate (32).

7. A rapid forging and trimming device for a valve blank (5) according to claim 6, characterized in that: The first lifting pin (11) and the second lifting pin (12) include multiple sections in the length direction, and each section is connected by a threaded structure. The second lower template (32) includes two upper and lower parts that are detachably connected.

8. A rapid forging and trimming device for a valve blank (5) according to claim 7, characterized in that: A downwardly sliding slope (33) is arranged on the lower die assembly (6) near the waste material discharge side (9), and an anti-hanging assembly (34) is also arranged on the lower die assembly (6), and the anti-hanging assembly (34) is used to prevent the flash (25) from sliding out of the lower die assembly (6).

9. A rapid forging and trimming device for a valve blank (5) according to claim 8, characterized in that: The anti-hanging component (34) comprises: An anti-hanging strip (35), a first anti-hanging groove (36) is provided on the lower mold assembly (6) near the waste material discharge side (9), the first anti-hanging groove (36) is along the downward slope (33), the anti-hanging strip (35) is slidably arranged in the first anti-hanging groove (36), a widened section (37) is extended from the upper end of the anti-hanging strip (35), the widened section (37) is slidably arranged on the surface of the downward slope (33), anti-hanging pin shafts (38) are arranged on both sides of the anti-hanging strip (35), and the groove walls on both sides of the first anti-hanging groove (36) are provided with guide grooves (39) parallel to the inclination direction of the downward slope (33), and the anti-hanging pin shaft (38) is slidably arranged in the guide grooves (39); A transverse driving plate (40), a second anti-hanging groove (41) is provided in the second lower template (32), a transverse driving plate (40) is slidably provided in the second anti-hanging groove (41), a straight groove (42) and an inclined groove (43) are provided on the transverse driving plate (40), the lower end of the anti-hanging strip (35) is slidably provided in the straight groove (42), the angle between the inclined groove (43) and the straight groove (42) is 60°, an anti-hanging driving shaft (44) is vertically provided on the lifting slide rod (14) on the lifting frame (13) for controlling the first lifting pin (11), and the anti-hanging driving shaft (44) is passed through the inclined groove (43) and is slidably connected to the inclined groove (43).

10. A trimming method applicable to a rapid forging trimming device for a valve blank (5) as claimed in claim 9, characterized in that: The following steps are involved: S1: trimming, placing the valve blank (5) with the flash (25) at the opening of the discharge hole (10) of the lower die assembly (6), with the flash (25) resting on the surface of the lower die assembly (6), and the lower pressure rod (3) leading the upper die assembly (1) to press downward so that the valve blank (5) is cut by the trimming knife (4) and discharged from the discharge hole (10); S2: tilting and lifting and sliding down, the lifting component (8) tilts and lifts the flash (25) remaining on the lower mold component (6) after trimming toward the waste material discharge side (9), so that the flash (25) naturally tilts and slides toward the waste material discharge side (9) under the action of gravity; S3: the rear lifting pin (11) slides downward, and after the first lifting pin (11) stops lifting, the first lifting pin (11) continues to lift up to provide initial power for the flash (25) to slide toward the waste material discharge side (9); S4: Anti-hanging and sliding promotion, the anti-hanging component (34) helps the flash edge (25) that has not slid out of the downward sliding slope (33) to slide out of the lower mold component (6).

Images