CN116475256B - Cold extrusion die for preparing valve collet and valve collet preparation method - Google Patents
Cold extrusion die for preparing valve collet and valve collet preparation method Download PDFInfo
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- CN116475256B CN116475256B CN202310453775.3A CN202310453775A CN116475256B CN 116475256 B CN116475256 B CN 116475256B CN 202310453775 A CN202310453775 A CN 202310453775A CN 116475256 B CN116475256 B CN 116475256B
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- 238000000641 cold extrusion Methods 0.000 title claims abstract description 78
- 238000002360 preparation method Methods 0.000 title description 11
- 238000003860 storage Methods 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 56
- 238000000034 method Methods 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 20
- 230000033001 locomotion Effects 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000004080 punching Methods 0.000 claims description 10
- 238000007664 blowing Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 238000013461 design Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000008901 benefit Effects 0.000 description 9
- MCSOAHVAIJXNDN-ZTFGCOKTSA-N ram-322 Chemical compound C1C(=O)CC[C@@]2(O)[C@H]3CC4=CC=C(OC)C(O)=C4[C@]21CCN3C MCSOAHVAIJXNDN-ZTFGCOKTSA-N 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention belongs to the technical field of machining, and provides a cold extrusion die for preparing a valve collet, which comprises the following components: the upper die assembly comprises a top plate and a punch head arranged on the top plate, the lower die assembly comprises a lower die main body, a die core and a demolding channel, and the die core and the demolding channel are arranged in the lower die main body; the cold extrusion die further comprises a demoulding assembly, the demoulding assembly comprises an air storage tank and a first inflation assembly, the first inflation assembly is connected with the air storage tank, the air storage tank is connected with the demoulding channel, and the fixed end of the first inflation assembly is connected with the lower die main body. The device can blow the workpiece out of the demolding channel and finish demolding of the workpiece without connecting blowing equipment such as a fan and the like, saves the power of external equipment such as the fan and the like, and is convenient to overhaul and maintain.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a cold extrusion die for preparing a valve collet and a valve collet preparation method.
Background
Valves are an important component of an engine that is responsible for delivering fuel into the interior of the engine and for exhausting exhaust gases. The valve structure comprises a valve, a valve lock clamp and a valve spring seat. The main function of the two valve clamps is to transmit the tension of the valve spring to the valve mechanism, so as to ensure the air tightness between the valve and the valve seat. In addition to general gasoline engines, the existing mainstream engines use valve clamps and spring seats to fix the valves, so high quality valve clamps are important to ensure the normal operation of the valves.
Cold extrusion is a process for plastically deforming a metal blank by placing the metal blank into a cold extrusion die and applying pressure at room temperature. The cold extrusion has the advantages of accurate size, material saving, high production efficiency, wide applicability and the like. Applying cold extrusion techniques to valve collet tooling may solve many of the problems of the current art and ensure performance of the valve collet.
However, the current cold extrusion process generally requires manual removal of the finished product from the die, which increases production costs to some extent. In the prior art, a workpiece is blown out of a die by using equipment such as a fan or an air cylinder, so as to realize demoulding. However, this solution requires external air blowing equipment, consumes power, and is inconvenient for later maintenance. Therefore, we provide a cold extrusion die for preparing a valve collet and a method for preparing the same, so as to solve the above problems.
Disclosure of Invention
The invention provides a cold extrusion die for preparing a valve collet and a valve collet preparation method, and aims to solve the problems in the prior art.
The invention is realized by a cold extrusion die for preparing a valve collet, comprising: the upper die assembly comprises a top plate and a punch head arranged on the top plate, the lower die assembly comprises a lower die main body, a die core and a demolding channel, and the die core and the demolding channel are arranged in the lower die main body; the cold extrusion die further comprises a demoulding assembly, the demoulding assembly comprises an air storage tank and a first inflation assembly, the first inflation assembly is connected with the air storage tank, the air storage tank is connected with the demoulding channel, the fixed end of the first inflation assembly is connected with the lower die main body, the movable end of the first inflation assembly is connected with the top plate, and the movable end of the first inflation assembly is inflated for the air storage tank by following the descending motion of the top plate.
Optionally, the first subassembly that aerifys includes first cavity, first ejector pin, first piston traction portion, first piston sealing portion and first check valve, the stiff end is first cavity, the mobile terminal is first ejector pin, first cavity with the lower mould main part is connected, the ejector pin with the roof is connected, first piston traction portion with first piston sealing portion all with first ejector pin is connected, first air vent has been seted up on the first piston, first ejector pin passes first piston, first piston is located first piston traction portion with between the first piston sealing portion, just first piston with first ejector pin sliding connection, first piston with when first piston traction portion contacts, first piston with there is the gap between the first piston sealing portion, first piston with when contact between the first piston sealing portion, first piston with first piston traction portion with first piston sealing portion, first piston and first piston traction portion have the gap with first cavity and first piston sliding connection.
Optionally, a first rubber protrusion matched with the first vent hole is arranged on the first piston sealing part.
Optionally, the demolding assembly further comprises a second inflation assembly, the second inflation assembly comprises a second cavity, a second ejector rod, a second piston traction portion, a second piston sealing portion and a second one-way valve, the second cavity is fixedly connected with the top plate, the second ejector rod is fixedly connected with the lower die main body, an air inlet pipe is arranged on the second cavity, the second piston traction portion and the second piston sealing portion are both connected with the second ejector rod, a second ventilation hole is formed in the second piston, the second ejector rod penetrates through the second piston, the second piston is arranged between the second piston traction portion and the second piston sealing portion, the second piston is in sliding connection with the second ejector rod, when the second piston is in contact with the second piston traction portion, a gap exists between the second piston and the second piston sealing portion, when the second piston is in contact with the second piston sealing portion, the second piston is in sliding connection with the second piston sealing portion, and the second piston is in sliding connection with the second cavity.
Optionally, a second rubber protrusion matched with the second ventilation hole is arranged on the second piston sealing part.
Optionally, the demoulding assembly further comprises a pressure sensor, an exhaust valve, an electric regulating valve and a fan interface, wherein the pressure sensor, the exhaust valve and the fan interface are respectively connected with the air storage tank, and the air storage tank is connected with the demoulding channel through the electric regulating valve.
Optionally, the lower mould main part is equipped with the die cavity, the mold core is located the inside of die cavity, the top of mold core is equipped with the boss portion, the boss portion is located in the drawing of patterns passageway, the bottom of drift be equipped with the concave surface portion that the boss portion matches.
Optionally, the upper surface fixed mounting of lower mould main part has the guide bar, the guide bar passes the roof, just the roof with guide bar sliding connection, the outside cover of guide bar is equipped with the spring, the spring is for the roof provides and keeps away from the elasticity of lower mould main part direction.
Optionally, a side of the demolding channel away from the air storage tank is inclined downwards.
The preparation method of the valve collet adopts the cold extrusion die and comprises the following steps:
s1, a top plate is driven to move downwards by a punching machine, a workpiece on a die core is subjected to cold extrusion by a punching head, then the top plate is driven to move upwards by the punching machine, cold extrusion operation on the workpiece is canceled, and cold extrusion processing of the workpiece is completed; s2, the moving end of the first inflation assembly inflates the air storage tank through following the descending movement of the top plate; and S3, air in the air storage tank enters the demolding channel and blows the workpiece out of the demolding channel to finish demolding.
The cold extrusion die for preparing the valve collet has the following beneficial effects that
(1) The top plate is connected with the output end of the punching machine, and the output end of the punching machine drives the top plate to move up and down, so that the punch is driven to move downwards. The work piece is located the upper end of mold core, when the drift moves down, carries out cold extrusion processing to the work piece on the mold core. In the process of downward movement of the top plate, the moving end of the first inflation assembly moves along with the downward movement of the top plate to inflate the air storage tank. When the top plate returns to the initial position, the internal air of the air storage tank is released into the demoulding channel, the workpiece is blown out of the demoulding channel, and demoulding is completed. The process does not need to manually take the workpiece away from the mold core, and labor cost is reduced. In addition, the device can blow the workpiece out of the demolding channel and finish demolding of the workpiece without connecting blowing equipment such as a fan and the like, saves the power of external equipment such as the fan and the like, and is convenient to overhaul and maintain. The cold extrusion die ensures the quality of the workpiece and brings environmental protection and economic benefits while improving the production efficiency.
(2) The first inflation assembly and the second inflation assembly are combined, so that the air is continuously inflated into the air storage tank in the reciprocating motion process of the top plate. The design effectively improves the pressure of air in the air storage tank, ensures that the released air of the air storage tank effectively blows out the workpiece from the demoulding channel, and realizes the demoulding effect. Meanwhile, the device has the advantages of compact structure, high reliability, convenience in overhaul and maintenance, and improvement of the service life and production efficiency of the whole cold extrusion processing equipment.
(3) When the valve collet is prepared by using a cold extrusion die, cold extrusion processing of a workpiece, preparation of air in an air storage tank and demolding operation are realized by adopting a series of components with synergistic effect. At the same time, by using an inclined stripping channel, the speed at which the workpiece slides out of the stripping channel can be increased. The whole preparation process is high in automation degree and efficiency, and the prepared valve collet has the advantages of high precision, stable quality and the like.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a cold extrusion die for preparing a valve collet according to the present invention;
FIG. 2 is a schematic perspective view of a stripper assembly of a cold extrusion die for preparing valve clamps according to the present invention;
FIG. 3 is a schematic cross-sectional structural view of a first inflation assembly and a second inflation assembly of a cold extrusion die for preparing a valve collet according to the present invention;
FIG. 4 is a schematic perspective view of an upper die assembly of a cold extrusion die for preparing a valve collet according to the present invention;
FIG. 5 is a schematic view of the explosive structure of the lower die assembly and punch of the cold extrusion die for preparing valve clamps according to the present invention;
FIG. 6 is a schematic side cross-sectional view of a lower die assembly of a cold extrusion die for preparing a valve collet according to the present invention;
fig. 7 is a schematic diagram of a connection structure between a cold extrusion die and a punching machine for preparing a valve collet according to the present invention.
The reference numerals are as follows:
1-upper die assembly, 11-top plate, 12-ram, 121-concave portion, 2-lower die assembly, 21-lower die body, 211-die cavity, 22-die core, 221-convex portion, 23-stripper channel, 24-guide bar, 25-spring, 3-stripper assembly, 31-air reservoir, 32-first air charge assembly, 321-first cavity, 322-first ram, 323-first piston, 3231-first vent, 324-first piston pull, 325-first piston seal, 326-first check valve, 327-first rubber bump, 33-second air charge assembly, 331-second cavity, 332-second ram, 333-second piston, 3331-second piston vent, 334-second piston pull, 335-second piston seal, 336-second check valve, 337-air inlet tube, 338-rubber bump, 34-pressure sensor, 35-vent valve, 36-electric control valve, 37-fan interface, 4-work piece, 5-punch.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
The terms "first" and "second" and the like in this application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps, operations, components, or modules is not limited to the particular steps, operations, components, or modules listed but may optionally include additional steps, operations, components, or modules inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
As shown in fig. 1 to 7, a cold extrusion die for preparing a valve collet of an exemplary embodiment includes: an upper die assembly 1 and a lower die assembly 2. The upper die assembly 1 includes a top plate 11 and a punch 12 provided on the top plate 11. The lower die assembly 2 includes a lower die body 21, a die core 22, and a demolding passage 23, wherein the die core 22 and the demolding passage 23 are both provided inside the lower die body 21. The cold extrusion die further comprises a stripper assembly 3, which assembly 3 comprises a gas reservoir 31 and a first gas charging assembly 32. The first inflation assembly 32 is connected to the air tank 31, and the air tank 31 is connected to the release passage 23. The fixed end of the first air charging assembly 32 is connected to the lower die main body 21, and the movable end is connected to the top plate 11. When the top plate 11 descends, the moving end of the first inflation assembly 32 follows the movement of the top plate 11 to inflate the air tank 31. Specifically, the top plate 11 is connected to the output end of the punch 5, and the output end of the punch 5 drives the top plate 11 to move up and down, so as to drive the punch 12 to move down. The workpiece 4 is provided at the upper end of the die core 22, and cold extrusion is performed on the workpiece on the die core 22 when the punch 12 moves down. During the downward movement of the top plate 11, the moving end of the first air charging assembly 32 charges the air tank 31 following the downward movement of the top plate 11. When the top plate 11 returns to the initial position, the air inside the air tank 31 is released into the demoulding passage 23, and the work 4 is blown out of the demoulding passage 23, completing demoulding. The process eliminates the need for manually removing the workpiece 4 from the mold core 22, reducing labor costs. In addition, the device can blow the workpiece 4 out of the demolding channel 23 and finish workpiece demolding without connecting blowing equipment such as a fan, saves the power of external equipment such as the fan, and is convenient to overhaul and maintain. The cold extrusion die ensures the quality of the workpiece and brings environmental protection and economic benefits while improving the production efficiency.
As an example, referring to fig. 1, 2, 3 and 7, the first inflation assembly 32 includes a first cavity 321, a first ram 322, a first piston 323, a first piston traction portion 324, a first piston sealing portion 325 and a first check valve 326, the fixed end is the first cavity 321, the movable end is the first ram 322, the first cavity 321 is connected with the lower die main body 21, the ram 322 is connected with the top plate, the first piston traction portion 324 and the first piston sealing portion 325 are all connected with the first ram 322, a first vent hole 3231 is formed on the first piston 323, the first ram 322 passes through the first piston 323, the first piston 323 is disposed between the first piston traction portion 324 and the first piston sealing portion 325, and when the first piston 323 contacts the first piston traction portion 324, the first piston 326 is connected with the first piston sealing portion 325 in a sliding manner, and a gap exists between the first piston 323 and the first piston sealing portion 325 is connected with the first piston sealing portion 31 in a sliding manner.
Specifically, when the top plate 11 moves down, the top plate 11 drives the first jack 322 to move down. The first piston sealing portion 325 of the first push rod 322 moves down and drives the first piston 323 to move down. In this process, the first piston sealing portion 325 seals the first vent hole 3231 of the first piston 323, and the first piston 323 presses air in the first chamber 321 and enters the air tank 31 through the first check valve 326. The first check valve 326 prevents the air in the air tank 31 from flowing back to the first chamber 321. Air enters the demolding channel 23 through the air storage tank 31, and blows out the workpiece 4 from the demolding channel 23, so that demolding effect is realized. When the top plate 11 moves upwards, the top plate 11 drives the first ejector rod 322 to move upwards. The first piston traction portion 324 of the first jack 322 drives the first piston 323 to move upward. At this time, a gap exists between the first piston seal 325 and the first piston 323, and external air enters the first chamber 321 through the first vent hole 3231. When the top plate 11 moves down again, the air in the first chamber 321 is again compressed, and enters the air tank 31. The circulation is to charge air in the air storage tank 31 during the cold extrusion process. When the cold extrusion is finished, the air storage tank 31 discharges air into the demoulding channel 23, so that the demoulding of the workpiece is realized. The structure has ingenious design and reliable mechanical property, and is convenient to overhaul and maintain.
This improved design has beneficial effects in terms of: by driving the first air charging assembly 32 to charge and discharge air by the movement of the top plate 11, it is achieved that the air tank 31 is charged during the cold extrusion process and the air is discharged to the die release passage 23 after the process is completed. The automatic inflation and exhaust mode not only saves the energy consumption of external equipment, but also reduces the occupied space of the equipment. The design does not need to manually take the workpiece 4 away from the mold core 22, reduces labor cost and improves production efficiency. Meanwhile, the automatic demolding process reduces the influence of human factors on the product quality, and ensures the quality of the workpiece. The arrangement of the first check valve 326 prevents the air in the air tank 31 from flowing back into the first cavity 321, ensuring smooth inflation and deflation. The first inflation assembly 32 is simple in design, compact in construction, and convenient to service and maintain. Meanwhile, the mechanical property is reliable, and the service life is long. In summary, the cold extrusion die of the embodiment has good environmental protection and economic benefits while improving production efficiency and ensuring workpiece quality.
As an example, referring to fig. 3, the first piston sealing portion 325 is provided with a first rubber protrusion 327 matching with the first vent hole, and the first rubber protrusion 325 is configured to improve the sealing effect of the first piston sealing portion 325 on the first vent hole 3231.
As an example, referring to fig. 1, 2, 3 and 7, the demolding assembly 3 further includes a second inflating assembly 33, the second inflating assembly 33 includes a second cavity 331, a second ejector rod 332, a second piston 333, a second piston traction portion 334, a second piston sealing portion 335 and a second check valve 336, the second cavity 331 is fixedly connected with the top plate 11, the second ejector rod 332 is fixedly connected with the lower mold main body 21, an air inlet pipe 337 is disposed on the second cavity 331, the second piston traction portion 334 and the second piston sealing portion 335 are connected with the second ejector rod 332, a second air vent 3331 is formed on the second piston 333, the second ejector rod 332 passes through the second piston 333, the second piston 333 is disposed between the second piston traction portion 334 and the second piston sealing portion 335, and the second piston 333 is slidably connected with the second ejector rod 11, when the second piston 333 contacts the second piston traction portion 334, and the second piston sealing portion 335 is slidably connected with the second piston sealing portion 336, and a gap exists between the second piston sealing portion 333 and the second piston sealing portion 336.
Specifically, when the top plate 11 moves up, the second cavity 331 is driven to move up, the second cavity 331 drives the second piston 333 to move up, when the second piston 333 contacts with the second piston sealing portion 335, the second piston 333 is fixed, the second piston sealing portion 335 seals the second vent hole 3331 of the second piston 333, and as the second cavity 331 continues to move up, the air in the second cavity 331 is extruded by the second piston 333, the air is extruded by the second check valve 336, and at the moment, the external air enters the interior of the second cavity 331 through the air inlet pipe 337; when the top plate 11 moves downwards, the second cavity 331 is driven to move downwards, the second piston 333 moves downwards along with the second cavity 331 first, when the lower surface of the second piston 333 contacts with the second piston traction part 334, the second piston 333 is fixed, the second cavity 331 continues to move downwards, at this time, the lower part space of the second cavity 331 becomes larger, the second piston 333 contacts with the second piston traction part 334, at this time, a gap is formed between the second piston 333 and the second piston sealing part 335, and air enters the interior of the second cavity 331 from the gap between the second piston 333 and the second piston sealing part 335; when the top plate 11 moves up again, the air in the second cavity 331 is again extruded into the air storage tank 31, so that the air is inflated in the second cavity 331 when cold extrusion processing is performed, and when the top plate 11 moves up after cold extrusion is finished, the air is extruded into the air storage tank 31 again.
Further, the second air charging assembly 33 charges air into the air tank 31 when the top plate 11 moves upward, and the first air charging assembly 32 charges air into the air tank 31 when the top plate 11 moves downward. By combining the first and second inflation assemblies 32 and 33, reciprocation of the top plate 11 is achieved, all of which charge air into the interior of the air reservoir 31. The gas tank 31 stores high-pressure gas for demolding the work 4.
The structure design is ingenious, and the first air charging assembly 32 and the second air charging assembly 33 are combined, so that the air is continuously charged into the air storage tank 31 in the reciprocating motion process of the top plate 11. The design effectively improves the pressure of air in the air storage tank 31, ensures that the released air of the air storage tank 31 effectively blows out the workpiece from the demoulding channel, and realizes the demoulding effect. Meanwhile, the device has the advantages of compact structure, high reliability, convenience in overhaul and maintenance, and improvement of the service life and production efficiency of the whole cold extrusion processing equipment.
As an example, referring to fig. 3, the second piston sealing portion 335 is provided with a second rubber protrusion 338 matching the second vent hole 3331. The second rubber protrusion 338 is designed to enhance the sealing effect of the second piston sealing portion 335 against the second vent hole 3331. In the process of moving up the top plate 11, the second piston 333 moves up, and when the second piston 333 contacts with the second piston sealing part 335, the second rubber protrusion 338 closely contacts with the second vent hole 3331, thereby realizing effective sealing of the second vent hole 3331. This sealing ensures that when air is compressed inside the second chamber 331, air does not leak through the second vent holes 3331, but rather enters the air tank 31 through the second check valve 336.
Specifically, the second rubber protrusion 338 is provided to significantly improve the sealing effect of the second piston sealing portion 335 on the second vent hole 3331, thereby reducing the risk of air leakage and improving the inflation efficiency of the entire system. In addition, the second rubber protrusion 338 is made of rubber, has good sealing performance and wear resistance, and can maintain good sealing effect in a long-time use process. By improving the sealing effect, reducing air leakage and helping to improve the air pressure in the air storage tank 31, the workpiece 4 is blown out of the demolding channel more easily in the demolding process, and an efficient demolding effect is realized. Meanwhile, the design is also beneficial to reducing energy loss, reducing production cost and improving the economic benefit of the whole cold extrusion die. It should be noted that the first rubber protrusion 327 is the same as the second rubber protrusion 338, and detailed description thereof is omitted.
As an example, referring to fig. 1, 2 and 7, the stripper assembly 3 further includes a pressure sensor 34, an exhaust valve 35, an electrically operated valve 36 and a fan interface 37. The pressure sensor 34, the exhaust valve 35 and the fan connection 37 are each connected to the air reservoir 31, while the air reservoir 31 is connected to the stripping channel 23 via the electrically operated control valve 36. Specifically, the pressure sensor 34 is used for detecting the gas pressure inside the gas tank 31, the exhaust valve 35 is used for exhausting the gas inside the gas tank 31, and the electric control valve 36 is used for controlling the release of the gas inside the gas tank 31 to the demoulding passage 23. When the gas in the gas storage tank 31 enters the demoulding passage 23, the workpiece 4 on the die core 22 is blown away from the demoulding passage 23, so that the demoulding of the workpiece 4 after cold extrusion processing is realized. The fan interface 37 is used to connect a fan (not shown) to charge the air in the air tank 31 when the air pressure in the air tank 31 is insufficient.
The pressure sensor 34, the exhaust valve 35, the fan and the electric control valve 36 are all connected to an existing micro control unit (not shown). The pressure sensor 34 detects the air pressure inside the air tank 31 and transmits data to the micro control unit. The micro control unit sets upper and lower limits of the air pressure inside the air tank 31. When the internal air pressure of the air storage tank 31 is lower than a set value, the micro control unit controls the fan to charge air into the air storage tank 31 through the fan interface 37; when the internal air pressure of the air storage tank 31 is higher than the set value, the micro control unit controls the exhaust valve 35 to open, and the air in the air storage tank 31 is discharged until the air pressure is matched with the set value. In addition, the micro control unit is further configured to control the opening and closing and the opening degree of the electric control valve 36 to achieve the demolding effect.
The connection of the micro control unit and each part makes the whole cold extrusion processing equipment more intelligent, and can accurately adjust the air pressure in the air storage tank 31 according to actual needs, thereby realizing efficient and stable demoulding effect. The pressure sensor 34 monitors the air pressure inside the air storage tank 31 in real time, so that potential safety hazards and equipment damage caused by too high or too low air pressure can be avoided, and the normal operation of cold extrusion processing equipment can be ensured. The arrangement of the electric regulating valve 36 enables the gas in the gas storage tank 31 to be released to the demoulding channel 23 according to the requirement, so that the demoulding of the workpiece 4 is realized, and the efficiency of the whole cold extrusion processing process is improved. The provision of the exhaust valve 35 and the fan interface 37 allows for real-time regulation of the air pressure within the air reservoir 31, maintaining a suitable air pressure range. This helps to optimise the whole cold extrusion process and ensures the quality of the workpiece 4. By connecting the pressure sensor 34, the exhaust valve 35, the fan interface 37 and the electric regulating valve 36 with the existing micro-control unit, the integration level of the whole system is improved, and the operation and maintenance are convenient. In short, the demoulding assembly 3 in the example realizes the real-time monitoring and adjustment of the air pressure in the air storage tank 31 through the arrangement of the pressure sensor 34, the exhaust valve 35, the electric regulating valve 36 and the fan interface 37, and ensures the efficient and stable operation of the whole cold extrusion processing equipment. Meanwhile, the integration level and the operation convenience of the whole system are improved by combining the intelligent control of the micro control unit, and the production efficiency and the quality of the workpiece 4 are improved.
As an example, referring to fig. 4, 5 and 6, the lower die body 21 is provided with a die cavity 211, the die core 22 is disposed in the die cavity 211, a convex portion 221 is disposed at a top end of the die core 22, the convex portion 221 is disposed in the demolding channel 23, and a concave portion 121 matching the convex portion 221 is disposed at a bottom end of the punch 12. Specifically, the workpiece 4 is placed in the mold cavity 211, and a limit protrusion (not shown in the figure, it should be noted that the limit protrusion is set according to the shape of the workpiece) matched with the workpiece 4 is disposed in the mold cavity 211, and detailed description thereof is omitted. The workpiece 4 is positioned on the convex surface part 221, and the concave surface part 121 of the punch 12 and the convex surface part 221 of the die core 22 perform cold extrusion on the workpiece 4 to prepare the workpiece 4 into the valve collet.
The limiting protrusions in the die cavity 211 help to ensure the stability of the workpiece 4 during the processing process, and ensure that the workpiece is not shifted during the cold extrusion process, thereby improving the production efficiency and the product quality. The matching design between the top male surface 221 of the die core 22 and the bottom female surface 121 of the punch 12 allows for more precise shape control of the workpiece 4 during cold extrusion. This helps to reduce the reject rate in the production process and improve the consistency of the product. By providing the demolding channels 23 inside the mold cavity 211, the demolding process is made easier and more efficient. After the cold extrusion is finished, the air in the air storage tank 31 blows the workpiece 4 out of the die core 22 through the demoulding channel 23, so that quick demoulding is realized, and the production efficiency is improved. The design of the cavity 211 and the core 22 can be adjusted according to different shapes of the workpiece. In summary, by means of the precise design and matching of the components such as the die cavity 211, the die core 22, the punch 12 and the like, the cold extrusion processing device in the example can realize efficient and precise processing of the workpiece 4, improves the product quality and the production efficiency, and has wide application prospects.
As an example, referring to fig. 1 and 7, a guide rod 24 is fixedly mounted on the upper surface of the lower die main body 21, the guide rod 24 passes through the top plate 11, the top plate 11 is slidably connected with the guide rod 24, a spring 25 is sleeved on the outer portion of the guide rod 24, and the spring 52 provides an elastic force for the top plate 11 in a direction away from the lower die main body 21. The setting of guide bar 24 is used for playing the guide effect to the removal of roof 11, guarantees the ride comfort of roof 11 motion, and when roof 11 moved down, spring 25 is compressed, and work piece 4 is cold extrusion this moment, and work piece 4 cold extrusion is accomplished the back, and spring 25 provides ascending elasticity for roof 11, and the output of punching machine 5 is withdrawn, and the setting of spring 25 can alleviate the load of withdrawing of punching machine 5.
The arrangement of the guide rod 24 and the spring 25 can ensure the stable movement of the top plate 11, and avoid the deviation of the top plate 11 in the movement process, thereby improving the accuracy and stability of the cold extrusion process. The spring 25 provides a compressive force during the downward movement of the top plate 11 and an upward spring force to the top plate 11 after the cold extrusion is completed, which helps to reduce the retraction load of the punch 5, reduce the wear of the equipment, and extend the service life of the equipment.
As an example, the side of the demolding channel 23 away from the air storage tank 31 is inclined downwards, and the workpiece 4 slides downwards at the inclined position after the workpiece 4 is blown off by wind power, and slides out of the demolding channel 23 to finish demolding. The angled design of the demolding tunnel 23 may increase the rate at which the workpiece 4 slides off the demolding tunnel 23. The inclined design of the demoulding channel 23 enables the workpiece 4 to smoothly slide along the channel after being blown off by wind power, so that the demoulding rate is improved, and the production efficiency is improved.
The preparation method of the valve collet adopts the cold extrusion die to prepare the valve collet, and comprises the following steps:
s1: the press drives the top plate 11 downward so that the punch 12 performs cold extrusion on the work 4 on the die core 22. Subsequently, the punch drives the top plate 11 to move upward, the cold extrusion operation on the workpiece 4 is canceled, and the cold extrusion processing of the workpiece 4 is completed. The cold extrusion processing of the workpiece is realized, and the cold extrusion processing is a key step for preparing the valve collet.
S2: the moving end of the first inflation assembly 32 follows the descending movement of the top plate 11 to inflate the air tank 31. The function of this step is to fully prepare the air within the air reservoir 31 to provide a sufficient source of power for the next stripping operation.
S3: air in the air tank 31 enters the demolding passage 23 and blows the work 4 out of the demolding passage 24, thereby completing demolding. The step realizes demoulding operation on the workpiece 4 after cold extrusion processing, and the workpiece 4 slides out of the demoulding channel 23 to finish the preparation of the valve collet.
The method has the beneficial effects that when the cold extrusion die is used for preparing the valve collet, cold extrusion processing of a workpiece, preparation of air in the air storage tank and demolding operation are realized by adopting a series of components with synergistic effect. At the same time, by using an inclined stripping channel, the speed at which the workpiece slides out of the stripping channel can be increased. The whole preparation process is high in automation degree and efficiency, and the prepared valve collet has the advantages of high precision, stable quality and the like.
The exemplary embodiments of the present application may be combined with each other, and exemplary embodiments obtained by combining also fall within the scope of the present application.
The present application has been described with particular application to the principles and embodiments thereof, the description of the above examples being only for aiding in the understanding of the method of the present application and its core ideas; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.
Claims (9)
1. A cold extrusion die for preparing a valve collet, comprising: an upper die assembly (1) and a lower die assembly (2), wherein the upper die assembly (1) comprises a top plate (11) and a punch (12) arranged on the top plate (11), the lower die assembly (2) comprises a lower die main body (21), a die core (22) and a demolding channel (23), and the die core (22) and the demolding channel (23) are arranged inside the lower die main body (21); the device is characterized by further comprising a demolding assembly (3), wherein the demolding assembly (3) comprises a gas storage tank (31) and a first inflation assembly (32), the first inflation assembly (32) is connected with the gas storage tank (31), the gas storage tank (31) is connected with the demolding channel (23), the fixed end of the first inflation assembly (32) is connected with the lower die main body (21), the moving end of the first inflation assembly (32) is connected with the top plate (11), and the moving end of the first inflation assembly (32) inflates the gas storage tank (31) by following the descending movement of the top plate (11);
the first inflation assembly (32) comprises a first cavity (321), a first ejector rod (322), a first piston (323), a first piston traction part (324), a first piston sealing part (325) and a first one-way valve (326), the fixed end is the first cavity (321), the movable end is the first ejector rod (322), the first cavity (321) is connected with the lower die main body (21), the ejector rod (322) is connected with the top plate, the first piston traction part (324) and the first piston sealing part (325) are connected with the first ejector rod (322), a first vent hole (3231) is formed in the first piston (323), the first ejector rod (322) penetrates through the first piston (323), the first piston (323) is arranged between the first piston traction part (324) and the first piston sealing part (325), the first piston (323) is connected with the first piston (322) in a sliding mode, when the first piston (324) is in contact with the first piston (325), a gap exists between the first piston (323) and the first piston (324) in a sliding mode, and the first piston (325) is in contact with the first piston (325), the first piston (323) is in sealing sliding connection with the inner wall of the first cavity, the first one-way valve (326) is connected with the first cavity (321), and the first one-way valve (326) is connected with the air storage tank (31).
2. The cold extrusion die for preparing a valve collet as defined in claim 1, wherein the first piston seal (325) is provided with a first rubber protrusion (327) that mates with the first vent hole.
3. The cold extrusion die for preparing a valve lock clamp according to claim 1, wherein the demolding assembly (3) further comprises a second inflation assembly (33), the second inflation assembly (33) comprises a second cavity (331), a second ejector rod (332), a second piston (333), a second piston traction portion (334), a second piston sealing portion (335) and a second one-way valve (336), the second cavity (331) is fixedly connected with the top plate (11), the second ejector rod (332) is fixedly connected with the lower die main body (21), an air inlet pipe (337) is arranged on the second cavity (331), the second piston traction portion (334) and the second piston sealing portion (335) are both connected with the second ejector rod (332), a second vent hole (3331) is formed in the second piston (333), the second ejector rod (332) penetrates through the second piston (333), the second piston (333) is arranged between the second piston traction portion (334) and the second ejector rod (335) and the second piston (333) in a sliding mode, and when the second piston traction portion (335) and the second piston (333) are in sliding contact with the second piston (333), when the second piston (333) contacts with the second piston sealing part (335), a gap exists between the second piston (333) and the second piston traction part (334), the second piston (333) is in sealing sliding connection with the inner wall of the second cavity, the second one-way valve (336) is connected with the second cavity (331), and the second one-way valve (336) is connected with the air storage tank (31).
4. A cold extrusion die for preparing a valve collet as defined in claim 3, wherein the second piston sealing portion (335) is provided with a second rubber protrusion (338) that mates with the second vent hole.
5. Cold extrusion die for preparing valve clamps according to claim 1, characterized in that the demoulding assembly (3) further comprises a pressure sensor (34), an exhaust valve (35), an electric control valve (36) and a fan interface (37), wherein the pressure sensor (34), the exhaust valve (35) and the fan interface (37) are respectively connected with the air storage tank (31), and the air storage tank (31) is connected with the demoulding channel (23) through the electric control valve (36).
6. The cold extrusion die for preparing a valve collet as defined in claim 1, wherein the lower die body (21) is provided with a die cavity (211), the die core (22) is provided in the die cavity (211), a convex surface portion (221) is provided at a top end of the die core (22), the convex surface portion (221) is located in the demolding channel (23), and a concave surface portion (121) matched with the convex surface portion (221) is provided at a bottom end of the punch (12).
7. The cold extrusion die for preparing a valve collet as defined in claim 1, wherein a guide rod (24) is fixedly mounted on the upper surface of the lower die main body (21), the guide rod (24) penetrates through the top plate (11), the top plate (11) is slidably connected with the guide rod (24), a spring (25) is sleeved outside the guide rod (24), and the spring (25) provides an elastic force for the top plate (11) in a direction away from the lower die main body (21).
8. Cold extrusion die for preparing valve clamps according to claim 1, characterized in that the side of the demoulding channel (23) remote from the air reservoir (31) is inclined downwards.
9. A method for manufacturing a valve collet, characterized in that the method comprises the following steps of:
s1, a punching machine drives a top plate (11) to move downwards, a punch (12) carries out cold extrusion on a workpiece on a die core (22), then the punching machine drives the top plate (11) to move upwards, cold extrusion operation on the workpiece is canceled, and cold extrusion processing of the workpiece is completed;
s2, the moving end of the first inflation assembly (32) inflates the air storage tank (31) by following the descending movement of the top plate (11);
and S3, air in the air storage tank (31) enters the demolding channel (23) and blows the workpiece out of the demolding channel (23) to finish demolding.
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| CN202310453775.3A CN116475256B (en) | 2023-04-25 | 2023-04-25 | Cold extrusion die for preparing valve collet and valve collet preparation method |
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| CN202310453775.3A CN116475256B (en) | 2023-04-25 | 2023-04-25 | Cold extrusion die for preparing valve collet and valve collet preparation method |
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| CN116475256B true CN116475256B (en) | 2023-12-22 |
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| KR20190110813A (en) * | 2018-03-21 | 2019-10-01 | 동남정밀 주식회사 | Die-casting high-vacuum die device with additional gas discharging means |
| CN111974927A (en) * | 2020-07-31 | 2020-11-24 | 浙江金澳兰机床有限公司 | Hot forging punch with turnover die and using method thereof |
| CN113799373A (en) * | 2021-09-06 | 2021-12-17 | 安徽纳赫智能科技有限公司 | Demoulding mechanism during mould pressing |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11156600A (en) * | 1997-11-25 | 1999-06-15 | Fuji Oozx Inc | Press molding device |
| CN104148433A (en) * | 2014-08-10 | 2014-11-19 | 扬州江峰机械制造有限公司 | Cold extrusion mold and method for preparation of valve collet |
| KR20190110813A (en) * | 2018-03-21 | 2019-10-01 | 동남정밀 주식회사 | Die-casting high-vacuum die device with additional gas discharging means |
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| CN116475256A (en) | 2023-07-25 |
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