Punch forming die for machining automobile parts

Abstract

The invention relates to the technical field of part stamping dies, in particular to an automobile part machining stamping forming die which comprises a mounting plate, a fixed supporting structure is arranged below the mounting plate, a first mounting block is fixedly mounted on the upper side of the mounting plate, and a detachable lower die base is arranged on the upper side of the first mounting block. In the process that a sliding block moves downwards along with a movable adaptive block, the top face of the sliding block retracts into a first sliding cavity, space is reserved for stamping, when stamping is completed and an upper die block ascends, a second spring pushes the movable adaptive block to move upwards, the top of the sliding block protrudes out of the surface of a lower die base to eject a workpiece, and the top of the sliding block makes contact with an extrusion sensor to trigger an automatic oil injection pump; lubricating oil is injected into the oil injection hole through the guide pipe and sprayed to the surface of the lower die base through the oil injection groove to complete lubrication of the lower surface, the bidirectional lubrication mechanism ensures that the metal sheet is comprehensively lubricated in the stamping process, friction loss is remarkably reduced, and the product surface quality is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping die of parts, in particular to a stamping forming die for automobile part processing. BACKGROUND

[0002] In the field of automobile part manufacturing, stamping forming process is an important method for producing metal structural parts. There are several obvious pain points in the actual use of traditional stamping dies: first, the lubrication system often uses external spraying method, which not only causes oil waste, but also pollutes the working environment, and it is difficult to ensure uniform lubrication; second, the formed parts are often stuck in the mold cavity due to vacuum adsorption or deformation stress, which needs manual intervention for part taking, affecting production efficiency and existing safety hazards; third, the lubrication and ejection functions of the existing mold are usually designed separately, resulting in complex mold structure and high maintenance cost. Especially in continuous stamping operation, the traditional mold cannot realize precise timed and quantitative lubrication, which seriously affects the surface quality and dimensional accuracy of the product, therefore, a new stamping die integrating automatic lubrication, rapid demolding and intelligent control is needed. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides a stamping forming die for automobile part processing.

[0004] To solve the above technical problems, the present application provides the following technical scheme: a mounting plate is provided, a fixed support structure is arranged below the mounting plate, a first mounting block is fixedly installed on the upper side of the mounting plate, a detachable lower die seat is arranged on the upper side of the first mounting block, a movable upper die forming structure is arranged above the lower die seat and matched with the lower die seat, movable matching blocks are arranged on both sides of the upper side of the mounting plate corresponding to the lower die seat, a first movable cavity is formed in the side surface of the first mounting block corresponding to the third sliding cavity, a sliding block is movably installed in the first movable cavity, the sliding block extends above the lower die seat, an oil injection pipeline is arranged in the sliding block, a fixed extrusion sensor is arranged on the side surface of the first movable cavity corresponding to the side surface of the sliding block, an oil injection structure capable of receiving the electrical signal of the extrusion sensor is arranged below the mounting plate, the output end of the oil injection structure is movably installed in the oil injection pipeline, a first installation cavity is formed in the bottom side of the movable matching block, a first connecting cylinder is fixedly installed on the bottom side of the first installation cavity, a fixed hole is formed in the upper side of the movable matching block corresponding to the center position of the first installation cavity, a guide barrel fixedly connected with the oil injection structure is arranged in the fixed hole, the guide barrel is a circular barrel with an open lower end, an oil injection hole is formed in the side surface of the guide barrel, and a one-way flow structure for controlling oil flow is arranged in the inner upper side of the guide barrel.

[0005] As a preferred technical scheme of the present application, the mobile adapting block is provided with a third sliding cavity on one side of the lower die seat, a second sliding cavity is formed on the upper side of the first mounting block corresponding to the position of the first movable cavity, a first sliding cavity is formed on the upper side of the lower die seat corresponding to the position of the second sliding cavity, the oil injection pipeline comprises an oil injection hole formed on the bottom side of the sliding block, an oil injection groove is formed on the side surface of the sliding block and communicates with the inside of the oil injection hole, the sliding block is slidingly installed in the first sliding cavity, the first movable cavity and the third sliding cavity, two limiting columns are fixedly installed on the upper side of the mobile adapting block, and the limiting columns are circular columns.

[0006] As a preferred technical scheme of the present application, the supporting structure comprises a first connecting rod fixedly installed on the bottom side of the mounting plate, the first connecting rod is a rectangular column arranged longitudinally and transversely, and a supporting leg is fixedly installed on the bottom side of the first connecting rod, and the supporting leg is a circular column.

[0007] As a preferred technical scheme of the present application, the upper side of the mounting plate is fixedly installed with a connecting barrel corresponding to the position of the guide barrel, a second guide hole is formed on the upper side of the connecting barrel, one end of the guide barrel extends into the inside of the connecting barrel through the second guide hole, a push block is fixedly installed in the inside of the connecting barrel corresponding to the connecting barrel, the cross section of the push block is matched with the inside cross section of the connecting barrel, and the guide barrel is a circular column with an open lower end.

[0008] As a preferred technical scheme of the present application, the one-way flow structure comprises a third spring fixedly installed on the top side in the inside of the guide barrel, a blocking block is fixedly installed on the end face of the third spring, the blocking block is slidingly installed in the inside of the guide barrel, a second connecting rod is fixedly installed on the bottom side of the blocking block, a blocking ring is fixedly installed on the side of the second connecting rod away from the blocking block, the blocking ring is an arc-shaped block, a fixed limiting ring is arranged in the inside of the guide barrel corresponding to the lower side of the blocking ring, and a fixed fixing rod is arranged in the inside of the guide barrel corresponding to the lower side of the limiting ring.

[0009] As a preferred technical scheme of the present application, the upper die forming structure comprises an upper die block, a forming cavity matched with the lower die seat is formed on the bottom side of the upper die block, a second connecting block is fixedly installed on the side surface of the upper die block corresponding to the position of the mobile adapting block, and an extension column is fixedly installed on the bottom side of the second connecting block, and the extension column is a circular column.

[0010] As a preferred technical scheme of the present application, a first spring is fixedly installed on the side surface of the sliding block corresponding to the position of the third sliding cavity, and the sliding block is an "L"-shaped block.

[0011] As a preferred technical scheme of the present application, the bottom side of the mounting plate is provided with a fixed oil tank corresponding to the position of the first mounting cavity, the inside of the oil tank is provided with a second connecting barrel, one end of the second connecting barrel extending into the inside of the oil tank is provided with a spring check valve, the upper side of the mounting plate is fixedly provided with a fourth guide hole corresponding to the position of the connecting barrel, the two ends of the fourth guide hole are respectively communicated with the inside of the connecting barrel and the second connecting barrel, the side of the oil tank is fixedly provided with an automatic oil injection pump, the output end of the automatic oil injection pump is fixedly provided with a connecting pipe, the side of the first movable cavity is provided with a first guide hole, the side of the first movable cavity is fixedly provided with a guide pipe corresponding to the position of the first guide hole, the inside of the guide pipe extends to the inside of the oil injection hole, the end of the connecting pipe away from the oil injection groove is connected to the bottom side of the mounting plate corresponding to the position of the first guide hole, the upper side of the mounting plate is fixedly provided with a second spring, and the upper side of the second spring is fixedly arranged in the inside top side of the first mounting cavity.

[0012] As a preferred technical scheme of the present application, the two sides of the upper module are fixedly provided with a first connecting block, the two sides of the mounting plate are fixedly provided with a second mounting block corresponding to the position of the first connecting block, the upper side of the second mounting block is provided with two second mounting cavities, the inside of the second mounting cavity is provided with a telescopic rod, and the output end of the telescopic rod is fixedly arranged at the bottom side of the first connecting block.

[0013] Compared with the prior art, the present application has the following advantages: 1、The present application realizes the bidirectional automatic lubrication function of the stamping process through the sliding block provided with the oil injection hole and the oil injection groove, and the guide barrel provided with the oil injection hole, specifically, when the upper module is pressed down, the extension column pushes the moving adaptive block to move downward, drives the guide barrel to move in the connecting barrel, the push block extrudes the lubricating oil to be sprayed out of the oil injection hole, and the upper surface lubrication is completed; at the same time, the top surface of the sliding block is retracted into the first sliding cavity during the downward movement of the moving adaptive block, leaving space for stamping, when the upper module is lifted up after stamping, the second spring pushes the moving adaptive block to move upward, the top of the sliding block protrudes out of the surface of the lower die seat and contacts the extrusion sensor to trigger the automatic oil injection pump, the lubricating oil is injected into the oil injection hole through the guide pipe and sprayed to the surface of the lower die seat through the oil injection groove, and the lower surface lubrication is completed, this bidirectional lubrication mechanism ensures that the metal sheet is fully lubricated during stamping, significantly reduces the friction loss, and improves the surface quality of the product.

[0014] 2、The application realizes the intelligent linkage of demolding and lubrication through the cooperation of the "L"-shaped sliding block and the extrusion sensor, when the stamping is completed, the moving adapter block moves up under the action of the second spring, drives the sliding block to move upward, the top of the sliding block protrudes 3-5mm below the surface of the lower die seat, automatically lifts the formed workpiece, solves the problem of traditional mold taking difficulty, at the same time, the sliding block contacts with the extrusion sensor in the process of moving up, triggers the automatic oil injection pump to work regularly, lubricating oil is injected into the oil injection hole through the guide pipe, and the lubricating oil is sprayed to the surface of the lower die seat through the oil injection groove, so that the lubrication is prepared for the next stamping, the design integrates the ejection function and the lubrication function on a single component, which simplifies the mold structure and realizes the automation of the production process, and greatly improves the operation efficiency.

[0015] 3、The application realizes the accurate supply of lubricating oil through the cooperation of the one-way flow structure (including the blocking block, the blocking ring, the limiting ring and the fixed rod) in the guide barrel and the oil storage system (including the oil storage tank, the second connecting barrel and the fourth guide hole), when the guide barrel moves down, the oil pressure lifts the blocking block to compress the third spring, and the lubricating oil is sprayed out from the oil injection hole; when it continues to move down, the fixed rod pushes the second connecting rod to make the blocking ring block the oil injection hole, in the process of rising back, the pushing block moves up to generate negative pressure in the connecting barrel, the lubricating oil in the oil storage tank is sucked into the barrel through the second connecting barrel and the fourth guide hole, the mechanical flow control combined with the electrical control of the automatic oil injection pump ensures that the lubricating oil is accurately sprayed when needed, and avoids waste of oil and environmental pollution.

[0016] 4、The application realizes the accurate guidance and stable operation of the stamping process through the cooperation of the limiting column and the moving adapter block, and the linkage design of the telescopic rod and the upper module, four limiting columns are distributed on the upper surface of the moving adapter block, which accurately positions the stamped metal sheet, ensures that the stamping position is consistent every time, four telescopic rods provide stable guiding action for the upper module, ensure that the upper module and the lower die seat always keep accurate centering during the stamping process, at the same time, the first spring and the second spring provide stable reset force for the moving adapter block and the sliding block, ensure that each component can accurately return to the initial position after each stamping, the multi-stage guiding system ensures the stability of the stamping process and the consistency of the product. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the application; Figure 2 It is a lower die seat structure schematic diagram of the application; Figure 3 It is a mounting plate side sectional view of the application; Figure 4 It is a Figure 3 It is an enlarged structure schematic diagram of A in the application; Figure 5 It is a transverse sectional view of the application; Figure 6 It is aFigure 5 Amplification structure schematic diagram at B; Figure 7 Guiding barrel structure schematic diagram of the present application; Figure 8 Connecting barrel structure schematic diagram of the present application.

[0018] Wherein: 111, mounting plate; 112, first connecting rod; 113, support leg; 211, first mounting block; 212, lower die seat; 311, moving adaptive block; 312, limiting column; 411, first movable cavity; 412, first sliding cavity; 413, sliding block; 414, oil injection hole; 415, oil injection groove; 416, second sliding cavity; 421, guide pipe; 422, first guide hole; 423, oil storage tank; 424, automatic oil injection pump; 425, connecting pipe; 426, extrusion sensor; 431, third sliding cavity; 432, first spring; 511, first mounting cavity; 512, first connecting cylinder; 513, second spring; 521, connecting barrel; 522, second guide hole; 523, fixing hole; 524, push block; 525, guiding barrel; 526, oil injection hole; 527, fourth guide hole; 528, second connecting cylinder; 531, third spring; 532, block; 533, second connecting rod; 534, block ring; 535, limiting ring; 536, fixed rod; 611, second mounting block; 612, second mounting cavity; 613, telescopic rod; 711, upper module; 712, first connecting block; 713, second connecting block; 714, extension column. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the following specific embodiments are further described, but the following embodiments are only preferred embodiments of the present application, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application. The experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0020] Embodiment: as Figure 2 , Figure 4 and Figure 6As shown, a kind of stamping forming die of automobile parts processing includes mounting plate 111, the lower side of mounting plate 111 is provided with fixed support structure, the upper side of mounting plate 111 is fixedly installed with first mounting block 211, the upper side of first mounting block 211 is provided with detachable lower die seat 212, the upper side of lower die seat 212 is provided with movable upper die forming structure compatible with lower die seat 212, the upper side of mounting plate 111 is provided with the both sides of lower die seat 212 Sliding movement adaptation block 311 is set, the side of movement adaptation block 311 corresponding lower die seat 212 is equipped with third sliding cavity 431, the side of first mounting block 211 corresponding third sliding cavity 431 is equipped with first movable cavity 411, sliding block 413 is movably installed in first movable cavity 411, sliding block 413 extends to the upper side of lower die seat 212, the upper side of first mounting block 211 is equipped with second sliding cavity 416 corresponding the position of first movable cavity 411, the upper side of lower die seat 212 is equipped with first sliding cavity 412 corresponding the position of second sliding cavity 416, oil injection pipeline is arranged in sliding block 413, and the oil injection pipeline includes injection hole 414 arranged in the bottom side of sliding block 413, the side of sliding block 413 is equipped with oil injection groove 415 in intercommunication with the inside of injection hole 414, sliding block 413 is slidably installed in first sliding cavity 412, first movable cavity 411 and third sliding cavity 431, the side of first movable cavity 411 is provided with fixed extrusion sensor 426 corresponding the side of sliding block 413, the lower side of mounting plate 111 is provided with oil injection structure capable of receiving the electric signal of extrusion sensor 426, the output end of oil injection structure is movably installed in oil injection pipeline, the bottom side of movement adaptation block 311 is equipped with first installation cavity 511, the bottom side of first installation cavity 511 is fixedly installed with first connecting barrel 512, the upper side of movement adaptation block 311 is equipped with fixed hole 523 corresponding the center position of first installation cavity 511, the inside of fixed hole 523 is provided with fixed guide barrel 525 in intercommunication with oil injection structure, guide barrel 525 is circular barrel with lower end opening, the side of guide barrel 525 is equipped with oil injection hole 526, and the inside of guide barrel 525 is provided with one-way flow structure for controlling oil flow on the upper side; More specifically, the lower die base 212 is installed above the first mounting block 211. The metal sheet to be stamped is placed above the lower die base 212 and two movable adapter blocks 311. When the upper die forming structure moves downward to stamp the metal sheet, it first squeezes the movable adapter block 311. At this time, the movable adapter block 311 moves downward, carrying the sliding block 413 downward. The sliding block 413 extends from the upper end of the lower die base 212 and moves into the interior of the first sliding cavity 412. The movable adapter block 311 carries the guide barrel 525 downward. When the guide barrel 525 moves downward, the oil flow direction is controlled by the unidirectional flow structure, so that the oil is sprayed onto the upper part of the metal sheet through the oil spraying structure and the oil spraying hole 526 to lubricate the upper part of the metal sheet. When the upper die forming structure squeezes the metal sheet, the oil spraying is stopped by closing the unidirectional flow structure. After extrusion molding, the movable adapter block 311 guides the unidirectional flow structure inside the guide barrel 525 upward. The oil spray hole 526 is quickly blocked. At this time, the movable adapter block 311 moves upward with the sliding block 413. The sliding block 413 moves upward, and a part of the sliding block 413 moves above the lower mold base 212 to lift the formed metal sheet. Then, the sliding block 413 makes extrusion contact with the extrusion sensor 426, so that the oil spraying structure receives the electrical signal and starts to spray oil through the oil injection hole 414 and the oil spray groove 415 onto the upper part of the lower mold base 212 to seal the position of the lower mold base 212. Lubrication is performed, and a new metal sheet is placed for another stamping operation. Oil is sprayed onto the lower part of the metal sheet through the oil injection hole 414 and oil spray groove 415 on the sliding block 413, and oil is sprayed onto the upper part of the metal sheet through the oil spray hole 526 on the guide barrel 525, so that the metal sheet is fully lubricated during the stamping process. After the reprocessing is completed, the sliding block 413 squeezes the formed metal sheet to facilitate the separation of the formed metal sheet from the lower die base 212, thereby improving the feeding speed. like Figure 1 As shown, specifically, the upper mold forming structure includes an upper module 711. The bottom side of the upper module 711 is provided with a forming cavity that is adapted to the lower mold base 212. The side of the upper module 711 is fixedly installed with a second connecting block 713 corresponding to the position of the movable adapter block 311. An extension column 714 is fixedly installed on the bottom side of the second connecting block 713. The extension column 714 is a circular column. More specifically, when the upper module 711 moves downward, the extension column 714 first presses the moving adapter block 311 downward. When the moving adapter block 311 moves downward, oil is sprayed out of the oil spray hole 526 inside the guide barrel 525. When the extension column 714 continues to move downward and the upper module 711 moves above the metal sheet, the oil spray hole 526 inside the guide barrel 525 stops spraying oil to perform the stamping operation. like Figure 1As shown, specifically, the side of the sliding block 413 is fixedly installed with the first spring 432 corresponding to the position of the third sliding cavity 431, and the sliding block 413 is an "L"-shaped block. More specifically, when the mobile adaptive block 311 moves downward, the third sliding cavity 431 pushes the sliding block 413 to move downward. As Figure 2 As shown, specifically, the upper side of the mobile adaptive block 311 is fixedly installed with two limiting columns 312, and the limiting column 312 is a circular column. The support structure includes the first connecting rod 112 fixedly installed at the bottom side of the mounting plate 111, and the first connecting rod 112 is a rectangular column arranged longitudinally and transversely. The bottom side of the first connecting rod 112 is fixedly installed with the support leg 113, and the support leg 113 is a circular column. More specifically, the position of the metal sheet is limited by the four limiting columns 312, so as to quickly limit the position of the metal sheet. The mounting plate 111 is supported by the first connecting rod 112 and the support leg 113. As Figure 1 and Figure 2 As shown, specifically, the two sides of the upper module 711 are fixedly installed with the first connecting block 712, and the two sides of the mounting plate 111 are fixedly installed with the second mounting block 611 corresponding to the position of the first connecting block 712. The upper side of the second mounting block 611 is provided with two second installation cavities 612, and the inside of the second installation cavity 612 is provided with the telescopic rod 613. The output end of the telescopic rod 613 is fixedly installed at the bottom side of the first connecting block 712. More specifically, the first connecting block 712 and the upper module 711 are moved up and down by the second installation cavity 612. As Figure 6 , Figure 7 and Figure 8As shown, specifically, the upper side of the mounting plate 111 is fixedly installed with a connecting barrel 521 corresponding to the position of the guide barrel 525, the upper side of the connecting barrel 521 is provided with a second guide hole 522, one end of the guide barrel 525 extends to the inside of the connecting barrel 521 through the second guide hole 522, the guide barrel 525 is fixedly installed with a push block 524 corresponding to the inside of the connecting barrel 521, the cross section of the push block 524 is matched with the inside cross section of the connecting barrel 521, the guide barrel 525 is a circular column with an open lower end, and the one-way flow structure includes a third spring 531 fixedly installed at the top side inside the guide barrel 525, the end face of the third spring 531 is fixedly installed with a plug block 532, the plug block 532 is slidingly installed in the inside of the guide barrel 525, the bottom side of the plug block 532 is fixedly installed with a second connecting rod 533, the side away from the plug block 532 of the second connecting rod 533 is fixedly installed with a plug ring 534, the plug ring 534 is an arc-shaped block, the inside of the guide barrel 525 is provided with a fixed limiting ring 535 corresponding to the lower side of the plug ring 534, and the inside of the guide barrel 525 is provided with a fixed fixing rod 536 corresponding to the lower side of the limiting ring 535. More specifically, the moving adaptive block 311 moves downwardly with the guide barrel 525, the guide barrel 525 moves downwardly with the push block 524 in the inside of the connecting barrel 521, the push block 524 extrudes the oil in the connecting barrel 521 to be sprayed through the oil injection hole 526, the guide barrel 525 moves upwardly under the oil pressure of the plug block 532 in the process of moving downwardly, so that the oil can be discharged through the oil injection hole 526, when the guide barrel 525 continues to move downwardly, the fixing rod 536 extrudes the second connecting rod 533, so that the second connecting rod 533 moves with the plug ring 534 to the position of the oil injection hole 526, the plug ring 534 blocks the oil injection hole 526, when the guide barrel 525 moves upwardly, the plug block 532 moves to the position of the oil injection hole 526 under the air pressure, the limiting ring 535 limits the position of the plug ring 534, so that the inside of the connecting barrel 521 is filled with oil. As Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, specifically, the bottom side of the mounting plate 111 is provided with a fixed oil tank 423 corresponding to the position of the first mounting cavity 511, the inside of the oil tank 423 is provided with a second connecting barrel 528, one end of the second connecting barrel 528 extending into the inside of the oil tank 423 is provided with a spring check valve, the upper side of the mounting plate 111 is fixedly provided with a fourth guide hole 527 corresponding to the position of the connecting barrel 521, the two ends of the fourth guide hole 527 are respectively communicated with the inside of the connecting barrel 521 and the second connecting barrel 528, the side of the oil tank 423 is fixedly provided with an automatic oil injection pump 424, the output end of the automatic oil injection pump 424 is fixedly provided with a connecting pipe 425, the side of the first movable cavity 411 is provided with a first guide hole 422, the side of the first movable cavity 411 is fixedly provided with a guide pipe 421 corresponding to the position of the first guide hole 422, the inside of the guide pipe 421 extends to the inside of the oil injection hole 414, one end of the connecting pipe 425 away from the oil injection groove 415 is connected to the bottom side of the mounting plate 111 corresponding to the position of the first guide hole 422, the upper side of the mounting plate 111 is fixedly provided with a second spring 513, the upper side of the second spring 513 is fixedly provided in the inside top side of the first mounting cavity 511. More specifically, when the mobile adaptive block 311 is in contact with the extrusion sensor 426 while moving the sliding block 413 upward, the automatic oil injection pump 424 is started to spray oil for a fixed time, when the push block 524 moves upward, the oil in the inside of the oil tank 423 is sucked through the fourth guide hole 527 and the second connecting barrel 528, when the push block 524 moves downward, the spring check valve in the inside of the second connecting barrel 528 is closed so that the oil can only flow out through the oil injection hole 526, when the push block 524 moves upward, the spring check valve flows through the air pressure to suck the oil in the inside of the oil tank 423 into the inside of the connecting barrel 521, and when the push block 524 stops moving, the spring check valve is closed.

[0021] Working principle: In the initial state, the mobile adaptive block 311 is in the upper limit position under the action of the second spring 513, the top of the sliding block 413 protrudes 2-3mm above the surface of the lower die seat 212, and the block 532 in the guide barrel 525 closes the oil injection hole 526 under the action of the third spring 531. When the operator places the metal plate in the area positioned by the limiting column 312, the equipment is started, and the telescopic rod 613 drives the upper die block 711 to move downward.

[0022] In the upper die pressing stage, the extension column 714 first contacts the mobile adaptive block 311 and pushes it downward. The mobile adaptive block 311 moves downward to drive two key components to move: one is that the guide barrel 525 moves downward in the connecting barrel 521, the push block 524 extrudes the lubricating oil, the oil pressure lifts the block 532, and the lubricating oil is sprayed from the oil injection hole 526 to the upper surface of the metal sheet; the second is that the sliding block 413 is pushed downward by the first spring 432, so that the top of the sliding block 413 is retracted into the first sliding cavity 412, leaving space for stamping.

[0023] The stamping forming stage, when the upper module 711 continues to move down, at this time the guide barrel 525 is under the action of the fixed rod 536, the second connecting rod 533 pushes the blocking ring 534 to close the oil injection hole 526, and the oil injection is stopped. The forming cavity of the upper module 711 and the lower die seat 212 jointly complete the stamping forming work of the metal sheet.

[0024] The upper module lifting and ejection stage, the telescopic rod 613 drives the upper module 711 to move up, the second spring 513 pushes the moving adapter block 311 to move up, and then drives the sliding block 413 to move up, so that the top of the sliding block 413 protrudes from the surface of the lower die seat 212, and the formed workpiece is lifted to separate from the mold cavity. At the same time, the side surface of the sliding block 413 is in contact with the extrusion sensor 426, triggering the automatic oil injection pump 424 to work, and the lubricating oil is injected into the oil injection hole 414 through the connecting pipe 425 and the guide pipe 421, and is sprayed to the surface of the lower die seat 212 through the oil injection groove 415, preparing for the next stamping.

[0025] The lubricating oil supplement stage, in the process of moving the moving adapter block 311, the guide barrel 525 moves up synchronously, the push block 524 generates negative pressure in the connecting barrel 521, the lubricating oil in the oil storage tank 423 is sucked into the connecting barrel 521 through the spring one-way valve of the second connecting barrel 528 and the fourth guide hole 527, and the lubricating oil supplement is completed, preparing for the next working cycle.

[0026] The embodiments of the application are described in detail above in combination with the drawings, but the application is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the application.

Claims

1. A stamping die for processing automotive parts, comprising a mounting plate (111), a fixed support structure disposed below the mounting plate (111), a first mounting block (211) fixedly mounted on the upper side of the mounting plate (111), and a detachable lower die base (212) disposed on the upper side of the first mounting block (211), characterized in that, A movable upper mold forming structure adapted to the lower mold base (212) is provided above the lower mold base (212). Sliding movable adapter blocks (311) are provided on both sides of the mounting plate (111) corresponding to the lower mold base (212). A first movable cavity (411) is opened on the side of the first mounting block (211) corresponding to the third sliding cavity (431). A sliding block (413) is movably installed inside the first movable cavity (411). The sliding block (413) extends above the lower mold base (212). An oil spray pipe is provided inside the sliding block (413). A fixed extrusion sensor (426) is provided on the side of the first movable cavity (411) corresponding to the side of the sliding block (413). A mounting plate (111) is located below the lower part of the mounting plate (111). There is an oil injection structure that can receive the electrical signal of the pressure sensor (426). The output end of the oil injection structure is movably installed inside the oil injection pipe. A first mounting cavity (511) is opened on the bottom side of the movable adapter block (311). A first connecting cylinder (512) is fixedly installed on the bottom side of the first mounting cavity (511). A fixing hole (523) is opened on the upper side of the movable adapter block (311) corresponding to the center position of the first mounting cavity (511). A guide barrel (525) is fixed and communicates with the oil injection structure inside the fixing hole (523). The guide barrel (525) is a round barrel with an open bottom. An oil injection hole (526) is opened on the side of the guide barrel (525). A unidirectional flow structure for controlling the flow of oil is provided above the inside of the guide barrel (525).

2. The stamping die for processing automotive parts according to claim 1, characterized in that, The movable adapter block (311) has a third sliding cavity (431) on one side corresponding to the lower mold base (212). The upper side of the first mounting block (211) has a second sliding cavity (416) corresponding to the position of the first movable cavity (411). The upper side of the lower mold base (212) has a first sliding cavity (412) corresponding to the position of the second sliding cavity (416). The oil injection pipe includes an oil injection hole (414) opened on the bottom side of the sliding block (413). The side of the sliding block (413) has an oil injection groove (415) that communicates with the interior of the oil injection hole (414). The sliding block (413) is slidably installed inside the first sliding cavity (412), the first movable cavity (411) and the third sliding cavity (431). Two limiting posts (312) are fixedly installed on the upper side of the movable adapter block (311). The limiting posts (312) are circular posts.

3. The stamping die for processing automotive parts according to claim 2, characterized in that, The support structure includes a first connecting rod (112) fixedly installed on the bottom side of the mounting plate (111). The first connecting rod (112) is a rectangular column arranged in both directions. A support leg (113) is fixedly installed on the bottom side of the first connecting rod (112). The support leg (113) is a circular column.

4. The stamping die for processing automotive parts according to claim 3, characterized in that, A connecting barrel (521) is fixedly installed on the upper side of the mounting plate (111) at the position corresponding to the guide barrel (525). A second guide hole (522) is opened on the upper side of the connecting barrel (521). One end of the guide barrel (525) extends through the second guide hole (522) into the interior of the connecting barrel (521). A push block (524) is fixedly installed on the guide barrel (525) corresponding to the interior of the connecting barrel (521). The cross-section of the push block (524) is adapted to the internal cross-section of the connecting barrel (521). The guide barrel (525) is a circular cylinder with an opening at the lower end.

5. The stamping die for processing automotive parts according to claim 4, characterized in that, The unidirectional flow structure includes a third spring (531) fixedly installed on the top side inside the guide barrel (525). A block (532) is fixedly installed on the end face of the third spring (531). The block (532) is slidably installed inside the guide barrel (525). A second connecting rod (533) is fixedly installed on the bottom side of the block (532). A blocking ring (534) is fixedly installed on the side of the second connecting rod (533) away from the block (532). The blocking ring (534) is an arc-shaped block. A fixed limiting ring (535) is provided inside the guide barrel (525) below the blocking ring (534). A fixed fixing rod (536) is provided inside the guide barrel (525) below the limiting ring (535).

6. The stamping die for processing automotive parts according to claim 5, characterized in that, The upper mold forming structure includes an upper module (711). The bottom side of the upper module (711) is provided with a forming cavity that is compatible with the lower mold base (212). The side of the upper module (711) is fixedly installed with a second connecting block (713) corresponding to the position of the movable adapter block (311). The bottom side of the second connecting block (713) is fixedly installed with an extension column (714), which is a circular column.

7. A stamping die for processing automotive parts according to claim 6, characterized in that, The first spring (432) is fixedly installed on the side of the sliding block (413) at the position corresponding to the third sliding cavity (431). The sliding block (413) is an "L" shaped block.

8. A stamping die for processing automotive parts according to claim 7, characterized in that, The bottom side of the mounting plate (111) is provided with a fixed oil storage tank (423) corresponding to the position of the first mounting cavity (511). The oil storage tank (423) is provided with a second connecting cylinder (528). The end of the second connecting cylinder (528) extending into the oil storage tank (423) is provided with a spring one-way valve. The upper side of the mounting plate (111) is fixedly installed with a fourth guide hole (527) corresponding to the position of the connecting barrel (521). The two ends of the fourth guide hole (527) are respectively connected to the interior of the connecting barrel (521) and the second connecting cylinder (528). An automatic fuel injection pump (424) is fixedly installed on the side of the oil storage tank (423). A connecting pipe (425) is fixedly installed at the output end of the first movable cavity (411). A first guide hole (422) is opened on the side of the first movable cavity (411). A guide pipe (421) is fixedly installed on the side of the first movable cavity (411) corresponding to the position of the first guide hole (422). The inside of the guide pipe (421) extends to the inside of the oil injection hole (414). One end of the connecting pipe (425) away from the oil injection groove (415) is connected to the bottom side of the mounting plate (111) corresponding to the position of the first guide hole (422). A second spring (513) is fixedly installed on the upper side of the mounting plate (111). The upper side of the second spring (513) is fixedly installed on the top side inside the first mounting cavity (511).

9. A stamping die for processing automotive parts according to claim 8, characterized in that, The upper module (711) is fixedly installed with a first connecting block (712) on both sides. The mounting plate (111) is fixedly installed with a second mounting block (611) on both sides corresponding to the positions of the first connecting block (712). The upper side of the second mounting block (611) has two second mounting cavities (612). The interior of the second mounting cavity (612) is provided with a telescopic rod (613). The output end of the telescopic rod (613) is fixedly installed on the bottom side of the first connecting block (712).

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