CN116833411A - Powder forming hydraulic press - Google Patents

Abstract

The invention discloses a powder molding hydraulic press, belonging to the field of hydraulic presses. A powder molding hydraulic press includes a base, a pressure base, a pressure plate, a top base and a first hydraulic rod. The upper surfaces of the pressure plate and the pressure base are fixedly connected with The cylinder of lubricating oil is located on the same axis as the column. The first piston cylinder is fixedly connected to the upper cylinder. A piston plate is slidingly connected to the first piston cylinder. The piston plate is connected to the top of the first piston cylinder. A first spring is fixedly connected between the walls, a first piston rod is fixedly connected to the lower surface of the piston plate, and an oil suction pipe and an oil discharge pipe are respectively fixedly connected to both sides of the lower part of the piston plate. Both the oil suction pipe and the oil discharge pipe are provided with one-way valve. In the present invention, a cylinder and a first piston cylinder are provided, and the lubricating oil in the cylinder is passively applied to the upright column to lubricate the connection between the upright column, the pressure seat and the pressure plate, thereby preventing the upright column from long-term friction and burns.

Description

A powder molding hydraulic press

Technical field

The invention relates to the technical field of hydraulic presses, specifically a powder molding hydraulic press.

Background technique

Powder metallurgy forming is one of the basic processes in powder metallurgy production. The purpose is to turn loose powder into semi-finished products or finished products with predetermined geometry, size, density and strength. Among them, the most common way of powder forming is powder extrusion. , Powder extrusion generally refers to a powder forming method that relies on the pressure of a punch to extrude the metal powder in the die into a dense rod or part through an extrusion die with the same cross-sectional size and shape as its product.

In the powder molding process, a hydraulic press is required. The column is the main component of the hydraulic press. The role of the column is not only to support the upper beam and the cylinder, to withstand the working tension, but also to guide the movable beam. Because the column of the hydraulic press is used frequently, it is easy to wear. , affecting the use of hydraulic presses.

Contents of the invention

The purpose of the present invention is to provide a powder molding hydraulic press that has the advantage of slowing down column wear and solves the problems in the background technology.

In order to achieve the above object, the present invention provides the following technical solution: a powder molding hydraulic press, including a base, a pressure base, a pressure plate, a top base and a first hydraulic rod. The first hydraulic rod is fixedly connected to the middle part of the top base, and the The pressure plate is fixedly connected to the output end of the first hydraulic rod. Four second hydraulic rods are fixedly connected to the four corners of the base and are fixedly connected to the pressure base through the four second hydraulic rods. The top base and the base are fixedly connected to each other. Upright column, the pressure base and the pressure plate are provided with through holes that match the upright column. The upper surfaces of the pressure plate and the pressure base are fixedly connected with a cylinder for holding lubricating oil. The cylinder and the upright column are located on the same axis. , a first piston cylinder is fixedly connected to the upper cylinder, a piston plate is slidingly connected to the first piston cylinder, and a first piston plate is fixedly connected to the top wall inside the first piston cylinder. A spring, a first piston rod is fixedly connected to the lower surface of the piston plate, the cylinder at the lower part is intermittently offset against the first piston rod, and an oil suction pipe and an oil discharge pipe are fixedly connected to both sides of the lower part of the piston plate. The oil pumping pipe and the oil discharge pipe are both provided with one-way valves, the bottom of the oil pumping pipe is fixedly connected with a counterweight ball, and the pressure plate is provided with a hole that matches the oil pumping pipe and the first piston rod.

Preferably, a first bracket is fixedly connected to the side of the pressure base, and a rectangular box for supplying materials to the mold on the pressure base is slidably connected to the first bracket, and the rectangular box is fixedly connected to the first bracket. There is a third hydraulic lever.

Preferably, mounting brackets are fixedly connected to both sides of the first bracket, and a first box for transporting metal powder is fixedly connected to the middle of the mounting bracket. The bottom of the first box is connected to the upper surface of the rectangular box. Sliding connection, and the rectangular box is intermittently connected with the first box. A sliding rod is fixedly connected between the first bracket and the first box. A sliding rod is slidably connected to the sliding rod for controlling the unloading of the first box. The L-shaped plate has a second spring sleeved on the sliding rod. Both ends of the second spring are fixedly connected to the L-shaped plate and the first bracket respectively. The rectangular box and the L-shaped plate are intermittently offset.

Preferably, a feeding tube is fixedly connected to the top of the first box, and a second box for holding metal powder is fixedly connected to an end of the feeding tube away from the first box. The second box is placed on the ground, and the height of the second box is higher than that of the first box.

Preferably, a second bracket is fixedly connected to the side of the pressure seat close to the first bracket, a push block for pushing out the molded product is slidably connected to the second bracket, and a third bracket is fixedly connected to the second bracket. Four hydraulic rods, the output end of the fourth hydraulic rod is fixedly connected to the push block.

Preferably, the upper surface of the pressure seat is fixedly connected with a frame for limiting the position of the pressure plate, and the frame is provided with a gap for the movement of the rectangular box and the push block.

Preferably, an absorption cover is fixedly connected to the bottom of the push block, and the absorption cover fits the upper surface of the pressure base. A lift pump is fixedly connected to the outer wall of the second box, and a lift pump is installed on the lift pump. Absorption tube, one end of the absorption tube is connected with the absorption cover, and the other end of the absorption tube is fixedly connected with a discharge cover, and the discharge cover is located directly above the second box.

Preferably, a rectangular frame is installed on the top of the second box, a first filter plate is fixedly connected to the lower part of the rectangular frame, a second filter plate is slidably connected to the middle part of the rectangular frame, and the second filter plate is connected to the second filter plate. There is a gap between the first filter plates, and the second filter plate is located at the lower part of the discharge cover.

Preferably, a second piston cylinder is fixedly connected to the middle part of the first bracket, a second piston rod is slidably connected in the second piston cylinder, the rectangular box and the second piston rod are intermittently offset, and the rectangular box is A third piston cylinder is fixedly connected to the outer wall, a pipe is fixedly connected between the second piston cylinder and the third piston cylinder, a third piston rod is slidably connected to the inner limit of the third piston cylinder, and the rectangular frame A turntable is rotatably connected to the upper limit of the outer wall. The upper surface of the turntable is fixedly connected to a screw rod. The lower surface of the turntable is fixedly connected to an eccentric rod. The second filter plate is provided with a through groove that cooperates with the eccentric rod. The third piston rod has a hole that matches the screw rod, and a slider is fixedly connected to the hole. The slider is slidably connected in the spiral groove on the side wall of the screw rod.

Preferably, the side wall of the rectangular box is fixedly connected with a snap ring, and the end side wall of the second piston rod is provided with a snap groove that matches the snap ring.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. In the present invention, a cylinder and a first piston cylinder are provided, and the lubricating oil in the cylinder is passively applied to the upright column to lubricate the connection between the upright column, the pressure seat and the pressure plate, and prevent the upright column from long-term friction and burns. The first piston rod The piston plate is driven to slide toward the inside of the first piston cylinder, and the negative pressure generated in the first piston cylinder causes the lubricating oil in the lower cylinder to be extracted into the first piston cylinder through the oil suction pipe. When the two move away from each other, the first spring The elastic force causes the piston plate to slide down, and the lubricating oil extracted into the first piston cylinder is squeezed and discharged into the upper cylinder, thereby improving the utilization rate of the lubricating oil.

2. By arranging a rectangular box in the present invention, when the rectangular box slides to the cavity position on the pressure base, the metal powder in the rectangular box can enter the cavity of the pressure base to complete the filling.

3. The present invention sets a push block. When the product is extruded and pushed out, the fourth hydraulic rod operates. At this time, the push block at the output end of the fourth hydraulic rod moves in the direction of the product and pushes the product away from the pressure seat.

4. The present invention provides a first filter plate and a second filter plate. When the second filter plate slides relative to the rectangular frame, the metal powder recovered on the upper part of the second filter plate can be shaken. At this time, the metal powder is sieved and leaked to the first filter plate. In the upper part, the inner diameter of the filter holes on the second filter plate is larger than that of the first filter plate, and there is a gap between the two, so that the metal powder that may agglomerate can be squeezed, rubbed and refined for reuse.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the present invention;

Figure 2 is a schematic structural diagram of the frame of the present invention;

Figure 3 is a schematic structural diagram of the cylinder of the present invention;

Figure 4 is a schematic structural diagram of the first piston barrel of the present invention;

Figure 5 is a schematic structural diagram of the first spring of the present invention;

Figure 6 is a schematic structural diagram of the first bracket of the present invention;

Figure 7 is a schematic structural diagram of the sliding rod of the present invention;

Figure 8 is a schematic structural diagram of the snap ring of the present invention;

Figure 9 is a schematic structural diagram of the second bracket of the present invention;

Figure 10 is a schematic structural diagram of the screw rod of the present invention.

In the picture: 1. Base; 11. Second hydraulic rod; 12. Press seat; 13. Frame; 14. Pressure plate; 15. Top seat; 16. First hydraulic rod; 17. Column; 2. Cylinder; 21. First piston cylinder; 22. First spring; 23. Piston plate; 24. First piston rod; 25. Oil pumping pipe; 26. Oil discharge pipe; 27. One-way valve; 28. Counterweight ball; 3. First bracket ; 31. Third hydraulic rod; 32. Installation frame; 33. First box; 331. Feeding pipe; 34. Rectangular box; 341. Snap ring; 35. Slide rod; 36. Second spring; 37. L-shaped Plate; 38. Second piston cylinder; 39. Second piston rod; 4. Second bracket; 41. Fourth hydraulic rod; 42. Push block; 43. Absorption cover; 44. Absorption tube; 45. Lift pump; 46 , discharge cover; 5. second box; 51. rectangular frame; 52. first filter plate; 53. second filter plate; 54. third piston cylinder; 541. pipe; 55. third piston rod; 56. Turntable; 57, screw rod; 58, slider; 59, eccentric rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Embodiment 1

Referring to Figures 1-5, the present invention provides a technical solution: a powder molding hydraulic press, including a base 1, a pressure base 12, a pressure plate 14, a top base 15 and a first hydraulic rod 16. The first hydraulic rod 16 is fixedly connected to In the middle of the top base 15, the pressure plate 14 is fixedly connected to the output end of the first hydraulic rod 16. Four second hydraulic rods 11 are fixedly connected to the four corners of the base 1 and are fixedly connected to the pressure base 12 through the four second hydraulic rods 11. A column 17 is fixedly connected between the seat 15 and the base 1. The pressure base 12 and the pressure plate 14 are provided with through holes that match the column 17. The upper surfaces of the pressure plate 14 and the pressure base 12 are fixedly connected with round holes for holding lubricating oil. Cylinder 2, cylinder 2 and column 17 are located on the same axis. The first piston cylinder 21 is fixedly connected to the upper cylinder 2, and the piston plate 23 is slidingly connected to the first piston cylinder 21. The piston plate 23 is connected to the first piston. A first spring 22 is fixedly connected between the top walls inside the cylinder 21, and a first piston rod 24 is fixedly connected to the lower surface of the piston plate 23. The lower cylinder 2 and the first piston rod 24 are intermittently offset, and the lower part of the piston plate 23 The two sides of the oil pumping pipe 25 and the oil discharge pipe 26 are respectively fixedly connected. The oil pumping pipe 25 and the oil discharge pipe 26 are both provided with a one-way valve 27. The bottom of the oil pumping pipe 25 is fixedly connected with a counterweight ball 28, and the pressure plate 14 is provided with a The oil suction pipe 25 and the first piston rod 24 fit into the hole.

When in use, the upper mold of the mold is installed on the lower surface of the pressure plate 14, a cavity is opened on the pressure base 12, and an ejector pin for ejecting the product in the cavity is provided in the middle of the base 1, metal powder is injected into the cavity, and the first The operation of the hydraulic rod 16 causes the pressure plate 14 to move downward. At this time, the upper die at the bottom of the pressure plate 14 extrudes the metal powder in the cavity. Then the four second hydraulic rods 11 shrink, so that the pressure seat 12 is close to the base 1, and then The ejection pin on the base 1 pushes out the product in the cavity of the pressure seat 12. The upright column 17 provides support for the entire device and limits the movement of the pressure seat 12 and the pressure plate 14. The cylinder 2 on the pressure seat 12 and the pressure plate 14 Both are filled with lubricating oil. When the pressure seat 12 and the pressure plate 14 slide along the column 17, the lubricating oil in the cylinder 2 is passively applied to the column 17 to lubricate the connection between the column 17, the pressure seat 12 and the pressure plate 14. To prevent long-term friction and burns on the column 17, the operating stroke of the pressure plate 14 is large, and the lubricating oil in the upper cylinder 2 is consumed quickly, and the lubricating oil applied on the upper section of the column 17 can drip into the lower cylinder 2 due to gravity. , so that the amount of lubricating oil in the lower cylinder 2 is larger;

When the pressure plate 14 approaches the pressure seat 12, the first piston rod 24 located in the first piston cylinder 21 in the upper cylinder 2 can contact the bottom wall of the lower cylinder 2 and be squeezed. At this time, the first piston rod 24 It is squeezed and slides upward. At the same time, the oil pumping pipe 25 is affected by the gravity of the weight ball 28 and moves vertically downward, thereby ensuring that the lower end of the oil pumping pipe 25 can enter the lower cylinder 2. Then the first piston rod 24 drives the piston plate 23 Slides toward the inside of the first piston cylinder 21, and the negative pressure generated in the first piston cylinder 21 causes the lubricating oil in the lower cylinder 2 to be extracted into the first piston cylinder 21 through the oil suction pipe 25. When the two are separated, the first The elastic force of the spring 22 causes the piston plate 23 to slide down, and the lubricating oil extracted into the first piston cylinder 21 is squeezed and discharged into the upper cylinder 2, which improves the utilization rate of the lubricating oil and avoids the accumulation of the bottom cylinder 2 at the same time. Too much lubricating oil accumulated and overflowed.

Embodiment 2

Referring to Figures 1, 2, 6 and 7, on the basis of the first embodiment, further, a first bracket 3 is fixedly connected to the side of the pressure base 12, and a first bracket 3 is slidably connected to the first bracket 3 for pressing. There is a rectangular box 34 for mold material supply on the seat 12, and a third hydraulic rod 31 is fixedly connected between the rectangular box 34 and the first bracket 3.

When the third hydraulic rod 31 is activated and telescopic, it can drive the rectangular box 34 to slide on the upper surface of the pressure base 12. When the rectangular box 34 slides to the cavity position on the pressure base 12, the metal powder in the rectangular box 34 can enter. In the cavity of the pressure seat 12, the material filling is completed.

Mounting racks 32 are fixedly connected to both sides of the first bracket 3. A first box 33 for transporting metal powder is fixedly connected to the middle of the mounting rack 32. The bottom of the first box 33 is slidingly connected to the upper surface of the rectangular box 34. And the rectangular box 34 is intermittently connected with the first box 33. A sliding rod 35 is fixedly connected between the first bracket 3 and the first box 33. The sliding rod 35 is slidably connected with an L for controlling the unloading of the first box 33. The second spring 36 is sleeved on the shaped plate 37 and the sliding rod 35. Both ends of the second spring 36 are fixedly connected to the L-shaped plate 37 and the first bracket 3 respectively. The rectangular box 34 and the L-shaped plate 37 are intermittently offset.

The first box 33 is used for transporting and temporarily storing metal powder. When the third hydraulic rod 31 moves in the direction of the first box 33, the L-shaped plate 37 can be pushed, and due to the downward movement of the first box 33, The surface is slidingly connected to the upper surface of the rectangular box 34, and then when the L-shaped plate 37 is pushed, the metal powder in the first box 33 can enter the rectangular box 34, completing the replenishment of the rectangular box 34 in preparation for the next time The extrusion molding, the setting of the slide rod 35 limits the sliding of the L-shaped plate 37, when the rectangular box 34 moves away from the first box 33, the L-shaped plate 37 is pushed to move to the first position under the action of the second spring 36. The lower part of the box 33 blocks the lower port of the first box 33 , thereby preventing the metal powder in the first box 33 from leaking and wasting.

A feeding tube 331 is fixedly connected to the top of the first box 33 , and a second box 5 for containing metal powder is fixedly connected to one end of the feeding tube 331 away from the first box 33 . The second box 5 is placed on the ground. , and the height of the second box 5 is higher than the first box 33 .

The second box 5 is used to store metal powder, and the height of the second box 5 is higher than the first box 33, and the feeding pipe 331 between the first box 33 and the second box 5 is in an upward state. This allows the metal powder in the second box 5 to slide down the feeding tube 331 into the first box 33 to complete the replenishment of the first box 33 .

Embodiment 3

Referring to Figures 1, 2, 7, 8, 9 and 10, based on the second embodiment, further, a second bracket 4 is fixedly connected to the side of the pressure base 12 close to the first bracket 3 , a push block 42 for pushing out the molded product is slidably connected to the second bracket 4, a fourth hydraulic rod 41 is fixedly connected to the second bracket 4, and the output end of the fourth hydraulic rod 41 is fixedly connected to the push block 42.

When the product is extruded and pushed out, the fourth hydraulic rod 41 operates. At this time, the push block 42 at the output end of the fourth hydraulic rod 41 moves toward the product and pushes the product away from the pressure seat 12. When the product is pushed away from the pressure seat After 12 seconds, the fourth hydraulic rod 41 contracts, and the push block 42 is driven back to its original position.

The upper surface of the pressure base 12 is fixedly connected with a frame 13 for limiting the position of the pressure plate 14. The frame 13 is provided with a gap for the rectangular box 34 and the push block 42 to move.

When the pressure plate 14 moves toward the pressure seat 12 and squeezes the powder in the middle cavity of the pressure seat 12, the side walls of the pressure plate 14 can fit into the inner wall of the frame 13. When the pressure plate 14 fits into the inner wall of the frame 13, the frame 13 can Limit the position of the pressure plate 14, so that when the pressure plate 14 is pressed by the first hydraulic rod 16 to extrude the product, the frame 13 limits the position of the pressure plate 14 to prevent the pressure plate 14 from tilting with the column 17 after being stressed. If the column 17 is bent or burned due to force, the notch on the frame 13 prevents the movement of the rectangular box 34 and the push block 42 from being interfered with.

An absorption cover 43 is fixedly connected to the bottom of the push block 42, and the absorption cover 43 fits the upper surface of the pressure base 12. A lift pump 45 is fixedly connected to the outer wall of the second box 5, and an absorption pipe 44 is installed on the lift pump 45. One end of the absorption pipe 44 is connected with the absorption cover 43 , and the other end of the absorption pipe 44 is fixedly connected with a discharge cover 46 . The discharge cover 46 is located directly above the second box 5 .

When the rectangular box 34 is loading the cavity in the middle of the pressure base 12, it is inevitable that a small amount of metal powder will leak out on the upper surface of the pressure base 12. At this time, the lift pump 45 is started, because the absorption tube 44 on the lift pump 45 and the absorption cover 43 are connected, and the absorption cover 43 is arranged at the lower part of the push block 42. When the absorption cover 43 follows the movement of the push block 42, it can absorb most of the metal powder on the upper surface of the pressure base 12, and the absorbed metal powder passes through the absorption tube 44 It moves to the discharge cover 46 and is discharged into the entire lower second box 5 through the discharge cover 46, thereby improving the utilization rate of the metal powder.

Embodiment 4

Referring to Figures 1, 2, 7, 8, 9 and 10, based on the third embodiment, further, a rectangular frame 51 is installed on the top of the second box 5, and the lower part of the rectangular frame 51 is fixed The first filter plate 52 is connected, and the middle part of the rectangular frame 51 is slidingly connected to the second filter plate 53 . There is a gap between the second filter plate 53 and the first filter plate 52 . The second filter plate 53 is located at the lower part of the discharge cover 46 .

The second filter plate 53 is arranged at the lower part of the discharge cover 46, and the metal powder discharged through the discharge cover 46 can fall on the upper part of the second filter plate 53. When the second filter plate 53 slides relative to the rectangular frame 51, its upper part can be recovered The metal powder is shaken. At this time, the metal powder is sieved and leaks to the upper part of the first filter plate 52. The inner diameter of the filter holes on the second filter plate 53 is larger than that of the first filter plate 52, and there is a gap between the two, and then Metal powder that may agglomerate can be squeezed and rubbed to be refined, and the refined metal powder enters the second box 5 through the first filter plate 52 .

A second piston cylinder 38 is fixedly connected to the middle part of the first bracket 3, and a second piston rod 39 is slidably connected in the second piston cylinder 38. The rectangular box 34 and the second piston rod 39 are intermittently offset, and the outer wall of the rectangular box 51 is fixedly connected. There is a third piston cylinder 54. A pipe 541 is fixedly connected between the second piston cylinder 38 and the third piston cylinder 54. A third piston rod 55 is slidably connected to the inner limit of the third piston cylinder 54. The upper limit of the outer wall of the rectangular frame 51 is A turntable 56 is rotatably connected, the upper surface of the turntable 56 is fixedly connected with a screw rod 57, the lower surface of the turntable 56 is fixedly connected with an eccentric rod 59, the second filter plate 53 is provided with a through groove that cooperates with the eccentric rod 59, and the third piston The rod 55 has a hole that matches the screw rod 57 and a slider 58 is fixedly connected to the hole. The slider 58 is slidably connected in the spiral groove on the side wall of the screw rod 57 .

Both the second piston cylinder 38 and the third piston cylinder 54 are filled with hydraulic oil. When the rectangular box 34 slides toward the second piston cylinder 38, it can squeeze the second piston rod 39. At this time, the hydraulic pressure in the second piston cylinder 38 The oil moves into the third piston cylinder 54 through the pipe 541. At this time, the third piston rod 55 in the third piston cylinder 54 slides axially downward, and the third piston rod 55 slides in the third piston cylinder 54 through a key connection, and then The third piston rod 55 will not rotate relative to the third piston barrel 54, and the turntable 56 is limited and slides on the outer wall of the rectangular frame 51. A connecting seat is provided on the outer wall of the rectangular frame 51 for the turntable 56 to rotate and connect, so that the turntable 56 does not Axial movement will occur. As the third piston rod 55 slides, the slider 58 inside the third piston barrel 54 can slide relative to the spiral groove on the side wall of the screw rod 57, thereby allowing the screw rod 57 to drive the turntable 56 to rotate. , at this time, the eccentric rod 59 on the lower surface of the turntable 56 slides back and forth in the through groove on the second filter plate 53, and the second filter plate 53 is limited by the rectangular frame 51, and then the second filter plate 53 can move in the rectangular position. The linear reciprocating sliding motion in the frame 51 causes the metal powder to be screened.

A snap ring 341 is fixedly connected to the side wall of the rectangular box 34 , and a snap groove that matches the snap ring 341 is provided on the end side wall of the second piston rod 39 .

When the rectangular box 34 moves toward the second piston rod 39, the snap ring 341 on the side wall of the rectangular box 34 can deform and snap into the snap groove at the end of the second piston rod 39, and then when the rectangular box 34 moves away from the second piston cylinder At 38 o'clock, the snap ring 341 can drive the second piston rod 39 to be withdrawn from the second piston cylinder 38, causing the third piston rod 55 to slide into the third piston cylinder 54 again, thereby causing the second filter plate 53 to slide back and forth again, and then As the rectangular box 34 continues to move away from the snap ring 341, it can be deformed again and separated from the second piston rod 39, so that the sliding movement of the rectangular box 34 is not interfered with.

Working principle: When using this powder molding hydraulic press, the upper mold of the mold is installed on the lower surface of the pressure plate 14, a cavity is opened on the pressure base 12, and an ejector pin for ejecting the product in the cavity is set in the middle of the base 1. Metal powder is injected into the mold cavity, and the first hydraulic rod 16 operates to move the pressure plate 14 downward. At this time, the upper die at the bottom of the pressure plate 14 extrudes the metal powder in the mold cavity, and then the four second hydraulic rods 11 contract. The pressure base 12 is brought close to the base 1, and then the ejection pin on the base 1 pushes out the product in the cavity of the pressure base 12. The column 17 provides support for the entire device and limits the movement of the pressure base 12 and the pressure plate 14. The pressure base 12 12 and the cylinder 2 on the pressure plate 14 are filled with lubricating oil. When the pressure seat 12 and the pressure plate 14 slide along the column 17, the lubricating oil in the cylinder 2 is passively applied to the column 17, forming a connection between the column 17 and the pressure seat 12. The connection between the pressure plate 14 and the pressure plate 14 is lubricated to prevent long-term friction and burns of the column 17. The operating stroke of the pressure plate 14 is large, and the lubricating oil in the upper cylinder 2 is consumed quickly, and the lubricating oil applied on the upper section of the column 17 is affected by gravity. It can drip into the lower cylinder 2, so that the amount of lubricating oil in the lower cylinder 2 is larger;

When the pressure plate 14 approaches the pressure seat 12, the first piston rod 24 located in the first piston cylinder 21 in the upper cylinder 2 can contact the bottom wall of the lower cylinder 2 and be squeezed. At this time, the first piston rod 24 It is squeezed and slides upward. At the same time, the oil pumping pipe 25 is affected by the gravity of the weight ball 28 and moves vertically downward, thereby ensuring that the lower end of the oil pumping pipe 25 can enter the lower cylinder 2. Then the first piston rod 24 drives the piston plate 23 Slides toward the inside of the first piston cylinder 21, and the negative pressure generated in the first piston cylinder 21 causes the lubricating oil in the lower cylinder 2 to be extracted into the first piston cylinder 21 through the oil suction pipe 25. When the two are separated, the first The elastic force of the spring 22 causes the piston plate 23 to slide down, and the lubricating oil extracted into the first piston cylinder 21 is squeezed and discharged into the upper cylinder 2, which improves the utilization rate of the lubricating oil and avoids the accumulation of the bottom cylinder 2 at the same time. Too much lubricating oil accumulated and overflowed.

When the third hydraulic rod 31 is activated and telescopic, it can drive the rectangular box 34 to slide on the upper surface of the pressure base 12. When the rectangular box 34 slides to the cavity position on the pressure base 12, the metal powder in the rectangular box 34 can enter. In the cavity of the press seat 12, the material replenishment is completed. The first box 33 is used to transport and temporarily store the metal powder. When the third hydraulic rod 31 moves in the direction of the first box 33, the L-shaped plate 37 can be Pushing is performed, and since the lower surface of the first box 33 is slidingly connected to the upper surface of the rectangular box 34, when the L-shaped plate 37 is pushed, the metal powder in the first box 33 can enter the rectangular box 34, and the process is completed. To replenish the rectangular box 34 in preparation for the next extrusion molding, the setting of the sliding rod 35 limits the sliding of the L-shaped plate 37. When the rectangular box 34 moves away from the first box 33, the second spring 36 Under the action, the L-shaped plate 37 is pushed to move to the lower part of the first box 33, so that the lower port of the first box 33 is blocked, thereby preventing the metal powder in the first box 33 from leaking and wasting;

The second box 5 is used to store metal powder, and the height of the second box 5 is higher than the first box 33, and the feeding pipe 331 between the first box 33 and the second box 5 is in an upward state. This allows the metal powder in the second box 5 to slide down the feeding tube 331 into the first box 33 to complete the replenishment of the first box 33 .

When the product is extruded and pushed out, the fourth hydraulic rod 41 operates. At this time, the push block 42 at the output end of the fourth hydraulic rod 41 moves toward the product and pushes the product away from the pressure seat 12. When the product is pushed away from the pressure seat After 12 seconds, the fourth hydraulic rod 41 contracts, and the push block 42 is driven back to the original position;

When the pressure plate 14 moves toward the pressure seat 12 and squeezes the powder in the middle cavity of the pressure seat 12, the side walls of the pressure plate 14 can fit into the inner wall of the frame 13. When the pressure plate 14 fits into the inner wall of the frame 13, the frame 13 can Limit the position of the pressure plate 14, so that when the pressure plate 14 is pressed by the first hydraulic rod 16 to extrude the product, the frame 13 limits the position of the pressure plate 14 to prevent the pressure plate 14 from tilting with the column 17 after being stressed. The upright column 17 is bent or burned due to force. The gap in the frame 13 prevents the movement of the rectangular box 34 and the push block 42 from being interfered with. The rectangular box 34 cannot avoid leakage when loading materials into the cavity in the middle of the pressure seat 12. A small amount of metal powder is on the upper surface of the pressure base 12. At this time, the lift pump 45 is started. Since the absorption tube 44 on the lift pump 45 is connected with the absorption cover 43, the absorption cover 43 is set at the lower part of the push block 42, and the absorption cover 43 is in When following the movement of the push block 42, most of the metal powder on the upper surface of the press base 12 can be absorbed, and the absorbed metal powder moves to the discharge cover 46 through the absorption tube 44 and is discharged to the second box at the entire lower part through the discharge cover 46. Within 5 years, the utilization rate of metal powder will be improved.

When the rectangular box 34 moves toward the second piston rod 39, the snap ring 341 on the side wall of the rectangular box 34 can deform and snap into the snap groove at the end of the second piston rod 39, and then when the rectangular box 34 moves away from the second piston cylinder At 38 o'clock, the snap ring 341 can drive the second piston rod 39 to be withdrawn from the second piston cylinder 38, causing the third piston rod 55 to slide into the third piston cylinder 54 again, thereby causing the second filter plate 53 to slide back and forth again, and then As the rectangular box 34 continues to move away from the snap ring 341, it can deform again and break away from the second piston rod 39, so that the sliding of the rectangular box 34 is not interfered with;

Both the second piston cylinder 38 and the third piston cylinder 54 are filled with hydraulic oil. When the rectangular box 34 slides toward the second piston cylinder 38, it can squeeze the second piston rod 39. At this time, the hydraulic pressure in the second piston cylinder 38 The oil moves into the third piston cylinder 54 through the pipe 541. At this time, the third piston rod 55 in the third piston cylinder 54 slides axially downward, and the third piston rod 55 slides in the third piston cylinder 54 through a key connection, and then The third piston rod 55 will not rotate relative to the third piston barrel 54, and the turntable 56 is limited and slides on the outer wall of the rectangular frame 51. A connecting seat is provided on the outer wall of the rectangular frame 51 for the turntable 56 to rotate and connect, so that the turntable 56 does not Axial movement will occur. As the third piston rod 55 slides, the slider 58 inside the third piston barrel 54 can slide relative to the spiral groove on the side wall of the screw rod 57, thereby allowing the screw rod 57 to drive the turntable 56 to rotate. , at this time, the eccentric rod 59 on the lower surface of the turntable 56 slides back and forth in the through groove on the second filter plate 53, and the second filter plate 53 is limited by the rectangular frame 51, and then the second filter plate 53 can move in the rectangular position. The linear reciprocating sliding in the frame 51 causes the metal powder to be screened;

The second filter plate 53 is arranged at the lower part of the discharge cover 46, and the metal powder discharged through the discharge cover 46 can fall on the upper part of the second filter plate 53. When the second filter plate 53 slides relative to the rectangular frame 51, its upper part can be recovered The metal powder is shaken. At this time, the metal powder is sieved and leaks to the upper part of the first filter plate 52. The inner diameter of the filter holes on the second filter plate 53 is larger than that of the first filter plate 52, and there is a gap between the two, and then Metal powder that may agglomerate can be squeezed and rubbed to be refined, and the refined metal powder enters the second box 5 through the first filter plate 52 .

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A powder molding hydraulic press, including a base (1), a pressure seat (12), a pressure plate (14), a top seat (15) and a first hydraulic rod (16). The first hydraulic rod (16) is fixedly connected In the middle of the top base (15), the pressure plate (14) is fixedly connected to the output end of the first hydraulic rod (16), and the four corners of the base (1) are fixedly connected with four second hydraulic rods (11) and pass through The four second hydraulic rods (11) are fixedly connected to the pressure base (12). A column (17) is fixedly connected between the top base (15) and the base (1). The pressure base (12) and the pressure plate (17) are fixedly connected to each other. 14) is provided with a through hole that matches the upright column (17), and is characterized in that: the upper surfaces of the pressure plate (14) and the pressure seat (12) are fixedly connected with a cylinder (2) for holding lubricating oil, The cylinder (2) and the column (17) are located on the same axis. A first piston cylinder (21) is fixedly connected to the upper cylinder (2), and the first piston cylinder (21) slides inside. A piston plate (23) is connected, a first spring (22) is fixedly connected between the piston plate (23) and the top wall inside the first piston cylinder (21), and the lower surface of the piston plate (23) is fixed A first piston rod (24) is connected, and the cylinder (2) located at the lower part intermittently offsets the first piston rod (24). Both sides of the lower part of the piston plate (23) are respectively fixedly connected with oil suction pipes (25). ) and an oil drain pipe (26). The oil pump pipe (25) and the oil drain pipe (26) are both provided with a one-way valve (27). The bottom of the oil pump pipe (25) is fixedly connected with a counterweight ball (28). , the pressure plate (14) is provided with a hole that matches the oil suction pipe (25) and the first piston rod (24). 2. A powder molding hydraulic press according to claim 1, characterized in that: a first bracket (3) is fixedly connected to the side of the pressure seat (12), and the first bracket (3) is slidingly connected There is a rectangular box (34) used to supply materials to the mold on the pressure base (12), and a third hydraulic rod (31) is fixedly connected between the rectangular box (34) and the first bracket (3). 3. A powder molding hydraulic press according to claim 2, characterized in that: mounting brackets (32) are fixedly connected to both sides of the first bracket (3), and the middle part of the mounting bracket (32) is fixedly connected. There is a first box (33) for transporting metal powder, the bottom of the first box (33) is slidingly connected to the upper surface of the rectangular box (34), and the rectangular box (34) and the first box (33) is intermittently connected. A sliding rod (35) is fixedly connected between the first bracket (3) and the first box (33). A sliding rod (35) is slidably connected to the sliding rod (35) for controlling the first box. (33) The unloaded L-shaped plate (37), the sliding rod (35) is sleeved with a second spring (36), and the two ends of the second spring (36) are respectively connected with the L-shaped plate (37) Fixedly connected to the first bracket (3), the rectangular box (34) and the L-shaped plate (37) are intermittently offset. 4. A powder molding hydraulic press according to claim 3, characterized in that: a feeding pipe (331) is fixedly connected to the top of the first box (33), and the feeding pipe (331) is away from the first A second box (5) for holding metal powder is fixedly connected to one end of the box (33). The second box (5) is placed on the ground, and the height of the second box (5) Higher than the first box (33). 5. A powder molding hydraulic press according to claim 4, characterized in that: a second bracket (4) is fixedly connected to the side of the pressure seat (12) close to the first bracket (3), and the second bracket (4) is fixedly connected to the side of the pressure base (12). A push block (42) for pushing out the formed product is slidably connected to the second bracket (4), and a fourth hydraulic rod (41) is fixedly connected to the second bracket (4). The fourth hydraulic rod (41) The output end of the push block (42) is fixedly connected. 6. A powder molding hydraulic press according to claim 5, characterized in that: the upper surface of the pressure seat (12) is fixedly connected with a frame (13) for limiting the position of the pressure plate (14), and the frame (13) 13) is provided with a gap for the rectangular box (34) and the push block (42) to move. 7. A powder molding hydraulic press according to claim 5, characterized in that: the bottom of the push block (42) is fixedly connected with an absorption cover (43), and the absorption cover (43) and the pressure seat (12) The upper surface of the second box (5) is fixedly connected to the outer wall of the second box (5). A lifting pump (45) is fixedly connected to the lifting pump (45). An absorption pipe (44) is installed on the lifting pump (45). The absorption pipe (44) One end of the absorber pipe (44) is connected with the absorption cover (43), and the other end of the absorption pipe (44) is fixedly connected with a discharge cover (46), and the discharge cover (46) is located directly above the second box (5). 8. A powder molding hydraulic press according to claim 7, characterized in that: a rectangular frame (51) is installed on the top of the second box (5), and the lower part of the rectangular frame (51) is fixedly connected with The first filter plate (52), the middle part of the rectangular frame (51) is slidingly connected to the second filter plate (53), and there is a gap between the second filter plate (53) and the first filter plate (52), so The second filter plate (53) is located at the lower part of the discharge cover (46). 9. A powder molding hydraulic press according to claim 2 or 8, characterized in that: a second piston cylinder (38) is fixedly connected to the middle part of the first bracket (3), and the second piston cylinder (38) ) is slidably connected with a second piston rod (39), the rectangular box (34) and the second piston rod (39) are intermittently offset, and a third piston cylinder (54) is fixedly connected to the outer wall of the rectangular frame (51) ), a pipe (541) is fixedly connected between the second piston cylinder (38) and the third piston cylinder (54), and a third piston rod (55) is slidingly connected to the inner limit of the third piston cylinder (54). ), the upper surface of the outer wall of the rectangular frame (51) is connected to a turntable (56) for local rotation, the upper surface of the turntable (56) is fixedly connected to a screw rod (57), and the lower surface of the turntable (56) is fixedly connected There is an eccentric rod (59), the second filter plate (53) is provided with a through groove that cooperates with the eccentric rod (59), and the third piston rod (55) is provided with a through groove that cooperates with the screw rod (57). The hole is fixedly connected with a slider (58) located in the hole, and the slider (58) is slidably connected in the spiral groove on the side wall of the spiral rod (57). 10. A powder molding hydraulic press according to claim 9, characterized in that: a snap ring (341) is fixedly connected to the side wall of the rectangular box (34), and the end of the second piston rod (39) The side wall of the base is provided with a snap groove that matches the snap ring (341).