Large press machine

Abstract

The utility model relates to the technical field of press machines, and discloses a large press machine which comprises a machine frame and a machine box installed on the upper portion of the machine frame, an oil cylinder is installed in the machine box, and the telescopic end of the oil cylinder extends into the machine frame to be provided with a pressure plate. A hydraulic pump station is arranged beside the machine frame, an oil outlet of the hydraulic pump station is connected with an oil cylinder installed in the machine box in a sealing mode through a flexible oil liquid conveying pipe, the machine box and the hydraulic pump station are connected through the flexible oil liquid conveying pipe, and when the flexible oil liquid conveying pipe vibrates, the oil cylinder is arranged in the machine box, so that the oil cylinder is not prone to falling off. According to the press machine, generated vibration force can be released, the situation that an oil pipe is broken or fractured in the using process is reduced, the situation that oil leaks outwards is reduced, pollution to the environment is relieved, and therefore the stability of the press machine is improved.

Description

Technical Field

[0001] This utility model relates to the field of press technology, specifically a large press. Background Technology

[0002] A press (including punch presses and hydraulic presses) is a sophisticated and versatile type of press. It is characterized by its wide range of applications and high production efficiency. Presses can be widely used in processes such as cutting, punching, blanking, bending, riveting, and forming. They process metal parts by applying strong pressure to metal blanks, causing plastic deformation and fracture. During operation, a mechanical press is driven by an electric motor via a V-belt to a large pulley (often also serving as a flywheel). This pulley, through a gear pair and clutch, drives a crank-slider mechanism, causing the slide and punch to move linearly downwards. After the forging process is completed, the slide moves upwards, the clutch automatically disengages, and simultaneously, an automatic actuator on the crankshaft engages, stopping the slide near the top dead center.

[0003] Commercially available presses and hydraulic pumps are usually connected by rigid oil pipes. If the press is depressurized, the oil pipe will vibrate strongly. The resulting vibration force cannot be released. Over time, the hose at the connection between the oil pipe and the press may break or rupture, causing unnecessary losses.

[0004] Therefore, we propose a large-scale press to address the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to solve the aforementioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a large press, including a frame and a housing installed on the upper part of the frame, wherein a hydraulic cylinder is installed inside the housing, and the telescopic end of the hydraulic cylinder extends into the housing to install a pressure plate; a hydraulic pump station is placed next to the frame, and the oil outlet of the hydraulic pump station is sealed to the hydraulic cylinder installed in the housing through a flexible oil delivery pipe, which can release vibration force during vibration.

[0007] Furthermore: the oil delivery pipe is a flexible hose, one end of which is sealed to the oil outlet of the hydraulic pump station via a flange, and the other end of which extends into the interior of the machine housing and is also sealed to the oil inlet of the cylinder via a flange.

[0008] Furthermore: the oil delivery pipe includes a rigid oil pipe located between the chassis and the hydraulic pump station. The two ends of the rigid oil pipe are respectively connected to a first flexible connecting pipe and a second flexible connecting pipe. One end of the first flexible connecting pipe is connected to the oil outlet of the hydraulic pump station, and one end of the second flexible connecting pipe extends into the interior of the chassis and is sealed to the oil inlet of the oil cylinder.

[0009] Furthermore: the frame includes a top plate installed at the bottom of the chassis and a bottom plate located below the top plate, and a plurality of parallel support columns are fixed between the top plate and the bottom plate.

[0010] Furthermore, a processing table is installed at the center of the base plate, and the processing table is located directly below the pressure plate.

[0011] Furthermore: the support column includes a first support portion and a second support portion fixed on the first support portion, and the outer diameter of the second support portion is smaller than the outer diameter of the first support portion.

[0012] Furthermore, guide cylinders are fixed at the corners of the pressure plate, and the guide cylinders are slidably mounted on the second support.

[0013] Furthermore, the top of the first support portion is provided with an annular collection groove along the circumferential direction, and the outer surface of the first support portion is provided with an oil discharge port communicating with the annular collection groove.

[0014] Furthermore: an upper stamping die is detachably mounted on the bottom of the pressure plate; a lower stamping die that works in conjunction with the upper stamping die is detachably mounted on the top of the processing table.

[0015] Furthermore, the back of the upper stamping die and the lower stamping die are respectively provided with a number of dovetail sliders, and the pressure plate and the processing table are respectively provided with dovetail grooves that cooperate with the dovetail sliders.

[0016] The beneficial effects of this utility model are:

[0017] The machine casing and hydraulic pump station of this invention are connected by a flexible oil delivery pipe. When the flexible oil delivery pipe vibrates, it can release the vibration force generated, reduce the possibility of the oil pipe breaking or rupture during use, reduce the possibility of oil leakage, reduce environmental pollution, and thus improve the stability of the press. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the frame in this utility model;

[0020] Figure 3 This is a schematic diagram of the connection structure between the chassis and the hydraulic pump station in this utility model;

[0021] Figure 4 This is a partial structural schematic diagram of the support column in this utility model.

[0022] The names corresponding to each mark in the diagram:

[0023] 1. Frame; 101. Top plate; 102. Bottom plate; 103. Support column; 1031. First support part; 1032. Second support part; 1033. Annular collection trough; 1034. Oil discharge port; 2. Chassis; 3. Oil cylinder; 4. Pressure plate; 5. Hydraulic pump station; 6. Oil delivery pipe; 601. Flexible hose; 602. Rigid oil pipe; 603. First flexible connecting pipe; 604. Second flexible connecting pipe; 7. Processing table; 8. Guide cylinder; 9. Upper stamping die; 10. Lower stamping die; 11. Dovetail slider; 12. Dovetail groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] A large press includes a frame 1, a housing 2 mounted on the top of the frame 1, and a hydraulic cylinder 3 (hydraulic cylinders are already in the prior art and will not be described in detail in this application) installed inside the housing 2; the output end of the hydraulic cylinder 3 extends into the interior of the frame 1 and a pressure plate 4 is installed thereon, and the hydraulic cylinder 3 can drive the pressure plate 4 to move up and down inside the frame 1.

[0026] A hydraulic pump station 5 is placed next to the frame 1 (hydraulic pump stations are already existing technology and will not be described in detail in this application); the oil outlet of the hydraulic pump station 5 is equipped with an oil delivery pipe, and one end of the oil delivery pipe extends into the inside of the housing 2 and is sealed to the oil inlet of the cylinder 3. It should be noted that the connection between the oil delivery pipe and the cylinder 3 and the connection with the hydraulic pump station 5 are made in a flexible manner, replacing the traditional rigid connection method. The advantage of this connection method is that if the oil delivery pipe vibrates, the vibration force can be released, reducing the possibility of the oil delivery pipe breaking or disconnecting from the connection with the cylinder 3 and the hydraulic pump station 5, reducing oil leakage, and thus improving the stability of the press.

[0027] It should be noted that the oil delivery pipe of this application has the following two types, and this application can use any of the following oil delivery pipes;

[0028] The first type of oil delivery pipe: The oil delivery pipe is a flexible hose 601. One end of the flexible hose 601 is sealed to the oil outlet of the hydraulic pump station 5 through a flange. The other end of the flexible hose 601 extends into the inside of the housing 2 and is also sealed to the oil inlet of the cylinder 3 through a flange. With the setting of the flexible hose 601, if the press is depressurized, the vibration force generated by the oil delivery pipe can be released, reducing the occurrence of cracks or breaks.

[0029] The second type of oil delivery pipe includes a rigid oil pipe 602 located between the housing 2 and the hydraulic pump station 5. The two ends of the rigid oil pipe 602 are respectively connected to a first flexible connecting pipe 603 and a second flexible connecting pipe 604. One end of the first flexible connecting pipe 603 is sealed to the oil outlet of the hydraulic pump station 5, and one end of the second flexible connecting pipe 604 extends into the interior of the housing 2 and is sealed to the oil inlet of the cylinder 3. Through the setting of the first flexible pipe 603 and the second flexible connecting pipe 604, if the press is depressurized, the vibration generated by the oil delivery pipe can be released through the first flexible connecting pipe 603 or the second flexible connecting pipe 604, reducing the possibility of breakage or disconnection.

[0030] In detail: The frame 1 includes a top plate 101 and a bottom plate 102. The top plate 101 is installed at the bottom of the chassis 2, and a processing table 7 is installed on the top of the bottom plate 102. The workpiece can be stamped on the processing table 7. Several parallel support columns 103 are fixed at equal intervals between the top plate 101 and the bottom plate 102. The support columns 103 serve to support the chassis 2.

[0031] More specifically: the support column 103 includes a first support part 1031 and a second support part 1032 fixed on the first support part 1031. The outer diameter of the second support part 1032 is smaller than the outer diameter of the first support part 1031. A guide cylinder 8, which is fixedly connected to the pressure plate 4, is slidably installed on the second support part 1032, thereby limiting the pressure plate 4 and preventing it from shaking during lifting and lowering, thus improving the stability of the press. It should be noted that the second support part 1032 is coated with lubricant. The lubricant allows the pressure plate 4 to slide more smoothly on the second support part 1032.

[0032] It should be noted that: the top of the first support part 1031 is provided with an annular collection groove 1033 along the circumferential direction. With the setting of the annular collection groove 1033, when the lubricating oil flows downward, it can enter the interior of the annular collection groove 1033, which can ensure cleanliness; the outer surface of the first support part 1031 is provided with an oil discharge port 1034, and the oil discharge port 1034 is interconnected with the interior of the annular collection groove 1033. With the setting of the oil discharge port 1034, when the lubricating oil in the annular collection groove 1033 is full, it can be discharged through the oil discharge port 1034, reducing the possibility of overflow. Under normal circumstances, a sealing plug (not shown in the figure) is installed in the internal thread of the oil discharge port 1034, thereby playing a sealing role.

[0033] The pressure plate 4 has an upper stamping die 9 detachably installed at its bottom, and the processing table 7 has an upper stamping die 10 installed at its top. The upper stamping die 9 and the lower stamping die 10 are detachable, so they can be replaced according to different workpieces and different workpieces can be processed.

[0034] In detail: Several parallel dovetail grooves 12 are provided on the bottom of the pressure plate 4 and the top of the processing table 7; dovetail sliders 11 that cooperate with the dovetail grooves 12 are provided on the top of the upper stamping die 9 and the bottom of the lower stamping die 10, respectively. The dovetail sliders 11 and the dovetail grooves 12 allow for quick disassembly of the upper stamping die 9 or the lower stamping die 10, thus providing convenience for the workers; it should be noted that stepped holes are provided at the corners of the upper stamping die 9 and the lower stamping die 10, and threaded holes (not shown in the figure) that cooperate with the stepped holes are provided at the corners of the pressure plate 4 and the processing table 7, respectively. The fixing bolts (not shown in the figure) pass through the stepped holes and the threaded holes for threaded connection, thereby fastening the upper stamping die 9 and the lower stamping die 10, preventing the lower stamping die 10 from shaking during use, and improving the stability of the press.

[0035] When stamping a workpiece: First, place the workpiece on the lower stamping die 10, then turn on the hydraulic pump station 5. The hydraulic pump station 5 can deliver oil to the inside of the oil cylinder 3 through the oil drain pipe 6, so that the oil cylinder 3 can drive the pressure plate 4 to move downward, and the workpiece can be stamped through the upper stamping die 9 below the pressure plate 4.

[0036] If the press releases pressure and generates vibration, the vibration force generated by the first flexible connecting pipe 603, the second flexible connecting pipe 604, or the flexible hose 601 between the machine housing 2 and the hydraulic pump station 5 will be released, replacing the traditional rigid connection method. This will prevent the oil delivery pipe from falling off or breaking at the connection between the oil delivery pipe and the machine housing 2 or the hydraulic pump station 5, reducing oil leakage. On the one hand, this will reduce oil waste, and on the other hand, it will reduce environmental pollution.

[0037] If different workpieces are to be processed, the upper stamping die 9 and the lower stamping die 10 can be replaced;

[0038] When replacing the upper stamping die 9 and the lower stamping die 10: first loosen the fixing bolts so that the dovetail sliders 11 on the upper stamping die 9 and the lower stamping die 10 can slide inside the dovetail groove 12 respectively, so that the upper stamping die 9 or the lower stamping die 10 can be taken out, and different workpieces can be processed.

Claims

1. A large press, comprising a frame (1) and a housing (2) mounted on the upper part of the frame (1), wherein a hydraulic cylinder (3) is installed inside the housing (2), and a pressure plate (4) is installed inside the hydraulic cylinder (3) extending to the interior of the frame (1); characterized in that: A hydraulic pump station (5) is placed next to the frame (1), and the oil outlet of the hydraulic pump station (5) is sealed to the oil cylinder (3) installed in the machine box (2) through a flexible oil delivery pipe. During the vibration of the flexible oil delivery pipe, the vibration force can be released.

2. A large press according to claim 1, characterized in that: The oil delivery pipe is a flexible hose (601). One end of the flexible hose (601) is sealed to the oil outlet of the hydraulic pump station (5) through a flange. The other end of the flexible hose (601) extends into the interior of the housing (2) and is also sealed to the oil inlet of the oil cylinder (3) through a flange.

3. A large press according to claim 2, characterized in that: The oil delivery pipe includes a rigid oil pipe (602) located between the housing (2) and the hydraulic pump station (5). The two ends of the rigid oil pipe (602) are respectively connected to a first flexible connecting pipe (603) and a second flexible connecting pipe (604). One end of the first flexible connecting pipe (603) is connected to the oil outlet of the hydraulic pump station (5), and one end of the second flexible connecting pipe (604) extends into the interior of the housing (2) and is sealed to the oil inlet of the oil cylinder (3).

4. A large press according to claim 3, characterized in that: The frame (1) includes a top plate (101) installed at the bottom of the chassis (2) and a bottom plate (102) located below the top plate (101). A number of parallel support columns (103) are fixed between the top plate (101) and the bottom plate (102).

5. A large press according to claim 4, characterized in that: A processing table (7) is installed at the center of the base plate (102), and the processing table (7) is located directly below the pressure plate (4).

6. A large press according to claim 5, characterized in that: The support column (103) includes a first support part (1031) and a second support part (1032) fixed on the first support part (1031), and the outer diameter of the second support part (1032) is smaller than the outer diameter of the first support part (1031).

7. A large press according to claim 6, characterized in that: The pressure plate (4) is fixed with guide cylinders (8) at the corners, and the guide cylinders (8) are slidably mounted on the second support part (1032).

8. A large press according to claim 7, characterized in that: The top of the first support part (1031) is provided with an annular collection groove (1033) along the circumferential direction, and the outer surface of the first support part (1031) is provided with an oil discharge port (1034) that communicates with the annular collection groove (1033).

9. A large press according to claim 8, characterized in that: The bottom of the pressure plate (4) is detachably fitted with an upper stamping die (9); the top of the processing table (7) is detachably fitted with a lower stamping die (10) that works in conjunction with the upper stamping die (9).

10. A large press according to claim 9, characterized in that: The back of the upper stamping die (9) and the lower stamping die (10) are respectively provided with a number of dovetail sliders (11), and the pressure plate (4) and the processing table (7) are respectively provided with dovetail grooves (12) that cooperate with the dovetail sliders (11).

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