Cold extrusion device for machining piston of hydraulic mechanism of electrical equipment

Abstract

The invention discloses a cold extrusion device for machining a piston of a hydraulic mechanism of electrical equipment, and relates to the technical field of cold extrusion. The cold extrusion device for machining the hydraulic mechanism piston of the electrical equipment comprises a machining table, an extrusion mechanism is fixedly connected to the top of the machining table, a mold fixing part is fixedly connected to the position, located on the left side of the extrusion mechanism, of the top of the machining table, and an extrusion mold is arranged in the mold fixing part. According to the cold extrusion device for machining the hydraulic mechanism piston of the electrical equipment, a metal blank is immersed into a placement box, then the metal blank is jacked through a material pushing frame, shaking can be generated when the metal blank impacts a pushing roller, lubricating oil attached to the upper surface of the metal blank is shaken off, consumption of the lubricating oil is reduced, and meanwhile the metal blank is prevented from being damaged. The surface of the metal blank can be uniformly and properly filled with lubricating oil, so that a complete lubricating film can be formed on the surface of the metal blank during extrusion, and the extrusion forming quality of the piston can be improved.

Description

Technical Field

[0001] This invention relates to the field of cold extrusion technology, specifically to a cold extrusion device for processing pistons in hydraulic mechanisms of electrical equipment. Background Technology

[0002] Cold extrusion is a processing method in which a metal blank is placed in a cold extrusion die and pressure is applied to the blank by a fixed punch on a press at room temperature, causing the metal blank to undergo plastic deformation to obtain a part. Citing Chinese patent application number 202311738005.X, a cold extrusion device for processing shock absorber pistons is disclosed, including a worktable. A mold cavity is opened on the upper surface of the worktable. Several guide rods are fixedly installed at equal intervals on the upper surface of the worktable. A guide plate is slidably installed in the middle of the guide rod. An extrusion head is fixedly installed on the lower surface of the guide plate. A top plate is fixedly installed on the upper end of the guide rod. A hydraulic cylinder is fixedly installed on the lower surface of the top plate. The output end of the hydraulic cylinder is located on the upper surface of the guide plate. A feeding assembly is provided on the side of the worktable. An ejection assembly is provided on the feeding assembly. Applying lubricating oil to the surface of the metal blank before extrusion molding can form a lubricating film on the surface of the metal blank. With an effective lubricating film, the surface of the piston after molding will be smoother, more uniform, and less rough, which helps to improve the molding quality. Existing equipment cannot uniformly coat the surface of the metal blank with lubricating oil, resulting in the absence of lubricating oil on some parts of the blank surface, which prevents the lubricating oil from playing its due role and reduces the molding quality of the molded parts. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a cold extrusion device for processing pistons in hydraulic mechanisms of electrical equipment, thereby solving the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a cold extrusion device for processing pistons of hydraulic mechanisms of electrical equipment, comprising a processing table, an extrusion mechanism fixedly connected to the top of the processing table, a mold fixing component fixedly connected to the left side of the extrusion mechanism on the top of the processing table, an extrusion mold disposed inside the mold fixing component, a feeding mechanism fixedly connected to the bottom of the processing table, and a discharging mechanism fixedly connected to the left side of the mold fixing component; The feeding mechanism includes: A placement box is provided at the bottom of the processing table and is located between the mold fixing components; A pusher rack is installed inside the placement box.

[0005] Preferably, a telescopic rod is fixedly connected to the bottom of the pusher frame, the telescopic rod is fixedly connected to the bottom of the placement box, and two pusher rollers are movably connected to the top of the pusher frame.

[0006] Preferably, the inner wall of the placement box is provided with multiple pushing rollers on both sides of the pusher frame, and the pushing rollers are placed intermittently.

[0007] Preferably, a guide tube is fixedly connected to the front of the placement box, and a pad is fixedly connected inside the placement box at the corresponding position between the guide tube and the pusher.

[0008] Preferably, the discharge mechanism includes a discharge hood, which is fixedly connected to the left side of the mold fixing component and located on the left side of the mold discharge port. Multiple support rollers are provided inside the discharge hood, an air extraction cylinder is fixedly connected to the top of the discharge hood, and a ventilation opening is provided at the bottom of the discharge hood.

[0009] Preferably, an air extraction motor is fixedly connected inside the air extraction cylinder, and blades are fixedly connected to the bottom output shaft of the air extraction motor.

[0010] Preferably, a fixed frame is fixedly connected to the bottom of the discharge hood, a rolling cylinder is provided on the left side of the discharge hood, the outer wall of the rolling cylinder is movably connected to the fixed frame through a bearing, a guide sleeve is fixedly connected inside the rolling cylinder, an impact spring is provided inside the guide sleeve, an impact head is fixedly connected to the top of the impact spring, and a protrusion that cooperates with the impact head is provided inside the rolling cylinder.

[0011] Preferably, a closing plate is provided inside the ventilation opening, and the closing plate is rotatably connected to the inner wall of the ventilation opening.

[0012] Preferably, a push wheel is movably connected to the top of the closing plate, a limiting plate is fixedly connected to the bottom of the vent opening, a limiting spring is fixedly connected to the top of the limiting plate, and the top of the limiting spring is fixedly connected to the bottom of the closing plate.

[0013] Preferably, an air supply pipe is fixedly connected to the top of the air extraction cylinder, a one-way valve is fixedly connected to the bottom of the placement box, and the other end of the air supply pipe connected to the air extraction cylinder is connected to the one-way valve.

[0014] This invention provides a cold extrusion device for machining pistons in hydraulic mechanisms of electrical equipment. It has the following advantages: 1. The cold extrusion device for piston processing of the hydraulic mechanism of this electrical equipment immerses the metal billet into the placement box, and then lifts the metal billet by the pusher. When the metal billet hits the pusher roller, it will shake off the lubricating oil attached to the surface of the metal billet, reducing the consumption of lubricating oil. At the same time, it can make the lubricating oil evenly and appropriately fill the surface of the metal billet, so that a complete lubricating film can be formed on the surface of the metal billet during extrusion, which helps to improve the quality of piston extrusion molding.

[0015] 2. The cold extrusion device for piston processing in the hydraulic mechanism of this electrical equipment allows the piston to enter the discharge hood. The blades are driven to rotate by the vacuum motor, which accelerates the air flow inside the discharge hood, thereby cooling the piston formed inside the discharge hood. This increases the hardness of the piston, prevents deformation after piston forming, and helps improve the quality of piston extrusion forming.

[0016] 3. The cold extrusion device for piston processing in the hydraulic mechanism of this electrical equipment, after the piston moves to the left side of the push wheel, the closing plate closes the vent opening, so that the airflow extracted by the air extraction cylinder will draw air from the mold, accelerate the air flow in the mold, cool the mold, and prevent the mold from losing strength due to continuous processing. This helps to extend the mold life, improve the precision of continuous piston production, and thus improve the forming quality of the piston.

[0017] 4. The cold extrusion device for piston processing in the hydraulic mechanism of this electrical equipment drives the rolling drum to rotate through the piston. The protrusions on the inner wall of the rolling drum push the impact head towards the center, causing it to impact the inner wall of the rolling drum. The impact is then transmitted to the formed piston, causing the piston to vibrate. This releases internal stress, optimizes surface quality, and improves friction. It works synergistically from multiple levels to ultimately improve the quality and performance of the workpiece.

[0018] 5. The cold extrusion device for piston processing in the hydraulic mechanism of this electrical equipment uses airflow carrying lubricating oil to enter the placement box through the air supply pipe. This causes the airflow at the bottom of the placement box to surge upwards. At the same time, the lubricating oil mixed in the airflow mixes with the lubricating oil inside the placement box, achieving the effect of recycling excess lubricating oil, reducing lubricating oil consumption, and indirectly improving the efficiency of piston extrusion production.

[0019] 6. The cold extrusion device for processing the piston of the hydraulic mechanism of this electrical equipment, when the metal blank is placed inside the placement box, the airflow rising from the bottom of the placement box will push the lubricating oil to flow over the surface of the metal blank, thereby breaking the air bubbles attached to the surface of the metal blank, and further making the surface of the metal blank uniformly coated with lubricating oil, improving the use effect of the lubricating oil, and further improving the forming quality of the piston. Attached Figure Description

[0020] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a schematic diagram of the rear three-dimensional structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention viewed from below; Figure 4 This is a cross-sectional view of the placement box of the present invention; Figure 5 for Figure 3Enlarged structural diagram of section B in the middle; Figure 6 for Figure 2 Enlarged structural diagram of section A in the middle; Figure 7 This is a schematic cross-sectional view of the discharge hood of the present invention; Figure 8 for Figure 7 Enlarged structural diagram of section C; Figure 9 for Figure 7 Enlarged structural diagram of section D in the middle; Figure 10 for Figure 7 Enlarged structural diagram of section E in the middle; Figure 11 This is a schematic diagram of the guide sleeve structure of the present invention.

[0021] In the diagram: 1. Processing table; 2. Extrusion mechanism; 3. Mold fixing component; 4. Feeding mechanism; 401. Placement box; 402. Guide tube; 403. Telescopic rod; 404. Pusher frame; 405. Pusher roller; 406. Push roller; 407. Pad platform; 5. Discharge mechanism; 501. Discharge cover; 502. Support roller; 503. Evacuation cylinder; 504. Evacuation motor; 505. Blade; 506. Air supply pipe; 507. One-way valve; 508. Closing plate; 509. Push wheel; 510. Restriction spring; 511. Vent opening; 512. Restriction plate; 513. Fixing frame; 514. Rolling cylinder; 515. Guide sleeve; 516. Impact head; 517. Impact spring. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0024] Example 1: Please refer to Figure 1-5 The present invention provides a technical solution: a cold extrusion device for processing pistons of hydraulic mechanisms of electrical equipment, including a processing table 1, an extrusion mechanism 2 fixedly connected to the top of the processing table 1, a mold fixing component 3 fixedly connected to the top of the processing table 1 on the left side of the extrusion mechanism 2, an extrusion mold being provided inside the mold fixing component 3, a feeding mechanism 4 fixedly connected to the bottom of the processing table 1, and a discharging mechanism 5 fixedly connected to the left side of the mold fixing component 3. Feeding mechanism 4 includes: Placement box 401 is set at the bottom of processing table 1 and is located between mold fixing part 3 and mold fixing part 3; The pusher 404 is located inside the placement box 401.

[0025] The bottom of the pusher frame 404 is fixedly connected to a telescopic rod 403, which is fixedly connected to the bottom of the placement box 401. The top of the pusher frame 404 is movably connected to two pusher rollers 405.

[0026] Pour an appropriate amount of lubricating oil into the placement box 401 to ensure that the metal billet is completely submerged in the lubricating oil after being placed into the placement box 401. Then, place the appropriate metal billet into the placement box 401 so that the metal billet is located at the top of the two pusher rollers 405. Then, the telescopic rod 403 extends and pushes the pusher frame 404 to push the metal billet upward, so that the metal billet moves to the right side of the mold. Then, the extrusion mechanism 2 pushes the metal billet into the mold and continues to extrude it. The formed piston structure will be pushed out from the left side. The piston that has completed the discharge is picked up by the corresponding material handling device.

[0027] When the metal blank is immersed in lubricating oil, too much lubricating oil will adhere to the surface. Excessive lubricating oil will affect the extrusion molding. Multiple push rollers 406 are provided on the inner wall of the placement box 401 on both sides of the pusher frame 404, and the push rollers 406 are placed intermittently.

[0028] During the process of the telescopic rod 403 lifting the metal billet through the pusher frame 404, the metal billet will be intermittently pushed back and forth by the pusher roller 406. When the metal billet hits the pusher roller 406, it will shake off the lubricating oil that has been attached to the surface of the metal billet and let the lubricating oil fall back into the placement box 401. This reduces the consumption of lubricating oil and allows the lubricating oil to be evenly and appropriately distributed on the surface of the metal billet.

[0029] A guide tube 402 is fixedly connected to the front of the placement box 401, and a padding platform 407 is fixedly connected to the inside of the placement box 401 at the corresponding position between the guide tube 402 and the pusher 404.

[0030] After the telescopic rod 403 retracts after feeding, it pulls the pusher 404 back to the bottom of the placement box 401. Then, a new metal billet can be put in through the top opening of the guide tube 402. The metal billet will roll into the placement box 401 through the guide tube 402 and be blocked by the corresponding push roller 406 after passing the top of the pad platform 407. The metal billet is then stuck between the two push rollers 405, which facilitates the next extrusion and rapid feeding.

[0031] Example 2: Please refer to Figure 1-11Based on Embodiment 1, the present invention provides a technical solution: The discharge mechanism 5 includes a discharge cover 501, which is fixedly connected to the left side of the mold fixing part 3 and is located on the left side of the mold discharge port. Multiple support rollers 502 are provided inside the discharge cover 501. An air extraction cylinder 503 is fixedly connected to the top of the discharge cover 501, and a ventilation opening 511 is provided at the bottom of the discharge cover 501.

[0032] An air pump motor 504 is fixedly connected inside the air pump 503, and a blade 505 is fixedly connected to the bottom output shaft of the air pump motor 504.

[0033] The piston, after extrusion, gradually enters the discharge hood 501. At the same time, the support roller 502 supports the piston. The suction motor 504 inside the suction cylinder 503 drives the blades 505 to rotate, allowing outside air to enter the discharge hood 501 through the ventilation opening 511 and the gaps on the left and right sides of the discharge hood 501. The air is then discharged by the suction cylinder 503, accelerating the airflow inside the discharge hood 501. This cools the piston formed inside the discharge hood 501, thereby increasing the piston's hardness and preventing deformation after forming, which would affect the processing quality.

[0034] A fixed frame 513 is fixedly connected to the bottom of the discharge hood 501. A rolling cylinder 514 is provided on the left side of the discharge hood 501. The outer wall of the rolling cylinder 514 is movably connected to the fixed frame 513 through a bearing. A guide sleeve 515 is fixedly connected inside the rolling cylinder 514. An impact spring 517 is provided inside the guide sleeve 515. An impact head 516 is fixedly connected to the top of the impact spring 517. A protrusion that cooperates with the impact head 516 is provided inside the rolling cylinder 514.

[0035] After the piston is discharged from the left side of the discharge hood 501, it passes over the top of the rolling drum 514 and pushes the rolling drum 514 to rotate. As the rolling drum 514 rotates, the protrusions on the inner wall of the rolling drum 514 push the impact head 516 towards the center and compress the impact spring 517. As the protrusions move, the impact head 516 is then pushed back by the impact spring 517 and impacts the inner wall of the rolling drum 514, further transmitting the impact to the formed piston. This causes the piston to vibrate, thereby releasing its internal stress, optimizing surface quality, and improving friction. This multi-level synergistic effect ultimately improves the overall quality and performance of the workpiece. The piston vibration also reduces the adhesion of residual lubricating oil on its surface, allowing the lubricating oil on its surface to be carried away by the airflow, reducing the amount of lubricating oil on the surface of the formed piston and facilitating subsequent processing.

[0036] A closing plate 508 is provided inside the vent opening 511, and the closing plate 508 is rotatably connected to the inner wall of the vent opening 511.

[0037] A push wheel 509 is movably connected to the top of the closing plate 508, a limiting plate 512 is fixedly connected to the bottom of the vent opening 511, a limiting spring 510 is fixedly connected to the top of the limiting plate 512, and the top of the limiting spring 510 is fixedly connected to the bottom of the closing plate 508.

[0038] When the piston discharges, it moves to the left inside the discharge hood 501. The piston pushes the push wheel 509, which in turn pushes the closing plate 508, causing the closing plate 508 to rotate around its connection with the vent opening 511. The limiting spring 510 is compressed, opening the bottom of the vent opening 511 and allowing external airflow to enter the discharge hood 501, quickly cooling the piston. When the piston moves to the left of the push wheel 509, the closing plate 508 resets under the push of the limiting spring 510, closing the vent opening 511. As the extrusion device of the extrusion mechanism 2 is withdrawn from the mold, the airflow from the vacuum pump 503 draws air from the mold, accelerating the airflow inside the mold and cooling it. This prevents the mold from weakening due to continuous processing and extends its lifespan. The flowing airflow also carries residual lubricating oil from inside the mold into the vacuum pump 503.

[0039] An air supply pipe 506 is fixedly connected to the top of the air pump 503, and a one-way valve 507 is fixedly connected to the bottom of the placement box 401. The other end of the air supply pipe 506 connected to the air pump 503 is connected to the one-way valve 507.

[0040] After the airflow carries the lubricating oil into the vacuum pump 503, the airflow will push the lubricating oil through the air supply pipe 506 into the placement box 401, causing the bottom of the placement box 401 to generate an upward surging airflow. At the same time, the lubricating oil mixed in the airflow will mix with the lubricating oil inside the placement box 401, achieving the effect of recycling excess lubricating oil. At the same time, when the metal blank is placed inside the placement box 401, the airflow will push the lubricating oil over the surface of the metal blank, thereby breaking the air bubbles attached to the surface of the metal blank, and further making the surface of the metal blank evenly coated with lubricating oil, thus improving the performance of the lubricating oil.

[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cold extrusion device for processing pistons in hydraulic mechanisms of electrical equipment, comprising a processing table (1), characterized in that: The processing table (1) is fixedly connected to the top of the extrusion mechanism (2), and the top of the processing table (1) is fixedly connected to the left side of the extrusion mechanism (2) with a mold fixing component (3). The mold fixing component (3) is provided with an extrusion mold inside. The processing table (1) is fixedly connected to the bottom of the feeding mechanism (4), and the mold fixing component (3) is fixedly connected to the left side of the discharge mechanism (5). The feeding mechanism (4) includes: Placement box (401) is set at the bottom of the processing table (1) and is located between the mold fixing component (3) and the mold fixing component (3); A pusher (404) is disposed inside the placement box (401).

2. The cold extrusion device for processing pistons in hydraulic mechanisms of electrical equipment according to claim 1, characterized in that: The bottom of the pusher (404) is fixedly connected to a telescopic rod (403), which is fixedly connected to the bottom of the placement box (401). The top of the pusher (404) is movably connected to two pusher rollers (405).

3. The cold extrusion device for processing pistons in hydraulic mechanisms of electrical equipment according to claim 1, characterized in that: The inner wall of the placement box (401) is provided with multiple push rollers (406) on both sides of the pusher frame (404), and the push rollers (406) are placed intermittently.

4. The cold extrusion device for processing pistons in hydraulic mechanisms of electrical equipment according to claim 1, characterized in that: The placement box (401) is fixedly connected to the front of the guide tube (402), and the placement box (401) is fixedly connected to the corresponding position between the guide tube (402) and the pusher (404) inside the placement box (401) with a pad platform (407).

5. A cold extrusion device for processing pistons in a hydraulic mechanism of electrical equipment according to claim 1, characterized in that: The discharge mechanism (5) includes a discharge cover (501), which is fixedly connected to the left side of the mold fixing part (3) and is located on the left side of the mold discharge port. Multiple support rollers (502) are provided inside the discharge cover (501). An air extraction cylinder (503) is fixedly connected to the top of the discharge cover (501), and a ventilation opening (511) is provided at the bottom of the discharge cover (501).

6. A cold extrusion device for processing pistons in a hydraulic mechanism of electrical equipment according to claim 5, characterized in that: The air pump (503) is fixedly connected to an air pump motor (504), and the bottom output shaft of the air pump motor (504) is fixedly connected to a blade (505).

7. A cold extrusion device for processing pistons in a hydraulic mechanism of electrical equipment according to claim 5, characterized in that: The bottom of the discharge hood (501) is fixedly connected to a fixing frame (513). A rolling cylinder (514) is provided on the left side of the discharge hood (501). The outer wall of the rolling cylinder (514) is movably connected to the fixing frame (513) through a bearing. A guide sleeve (515) is fixedly connected inside the rolling cylinder (514). An impact spring (517) is provided inside the guide sleeve (515). An impact head (516) is fixedly connected to the top of the impact spring (517). A protrusion that cooperates with the impact head (516) is provided inside the rolling cylinder (514).

8. A cold extrusion device for processing pistons in a hydraulic mechanism of electrical equipment according to claim 5, characterized in that: The ventilation opening (511) is provided with a closing plate (508), which is rotatably connected to the inner wall of the ventilation opening (511).

9. A cold extrusion device for processing pistons in a hydraulic mechanism of electrical equipment according to claim 8, characterized in that: The top of the closing plate (508) is movably connected to a push wheel (509), the bottom of the ventilation opening (511) is fixedly connected to a limiting plate (512), the top of the limiting plate (512) is fixedly connected to a limiting spring (510), and the top of the limiting spring (510) is fixedly connected to the bottom of the closing plate (508).

10. A cold extrusion device for processing pistons in a hydraulic mechanism of electrical equipment according to claim 5, characterized in that: The top of the vacuum pump (503) is fixedly connected to an air supply pipe (506), and the bottom of the placement box (401) is fixedly connected to a one-way valve (507). The other end of the air supply pipe (506) connected to the vacuum pump (503) is connected to the one-way valve (507).

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