Hydraulic machine

Abstract

The utility model discloses a hydraulic machine, and relates to the technical field of engineering machinery, the key point of the technical scheme is that the hydraulic machine comprises at least one hydraulic machine set, the hydraulic machine set comprises a workbench, a lower die, an upper die and an upper beam which are sequentially arranged from bottom to top; a plurality of vertical sliding columns are arranged between the lower die and the upper beam, the sliding columns are inserted into the upper die, the upper die is characterized in that the upper beam is provided with an oil cylinder used for driving the upper die to do vertical lifting reciprocating motion, the top of the upper die is provided with a safety stand column, and the upper end of the safety stand column is used for vertically penetrating through the upper beam upwards and penetrating out of the upper beam; the upper beam is provided with a safety lock matched with the top of the safety stand column in an inserted mode. The utility model has the effect of improving the use safety so as to avoid the safety risk caused by abnormal die assembly of the upper and lower dies.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, and more specifically to a hydraulic press. Background Art

[0002] A hydraulic press is a machine that uses liquid static pressure to process metal, plastic, rubber, wood, powder and other products. It is often used in pressing and forming processes. Its principle is to use Pascal's law to make a machine that uses liquid pressure transmission. There are many types of machines made according to Pascal's principle to transfer energy to achieve various processes. It is widely used in the process of industrial production. During production, the upper mold cooperates with the lower mold to press out the product under the drive of the upper hydraulic cylinder.

[0003] A Chinese patent with announcement number CN217803482U discloses a hydraulic press with high safety, which includes a frame, a bottom column symmetrically installed on the lower surface of the frame, a hydraulic cylinder installed on the top of the frame, an upper mold installed on the output end of the hydraulic cylinder, a lower mold installed inside the frame, connecting rods symmetrically installed on the front of the upper mold, a plastic transparent baffle installed on one end of the connecting rod, a bottom plate installed on the front of the frame, the lower surface of the plastic transparent baffle is in contact with the upper surface of the bottom plate, and side plates are symmetrically installed on both sides of the frame.

[0004] However, during use, this highly safe hydraulic press only uses a plastic transparent baffle to block the flying waste caused by the huge pressure generated during the backlog process. When the upper and lower molds are opened, it is difficult to effectively prevent the risk of sudden closing of the upper and lower molds due to pressure relief in the hydraulic cylinder, thereby affecting the safety of the operation. This needs to be improved. Summary of the invention

[0005] In view of this, the purpose of this application is to provide a hydraulic press to significantly improve the safety of use and avoid the safety risks caused by abnormal clamping of the upper and lower molds. The specific solution is as follows:

[0006] A hydraulic press comprises at least one hydraulic unit, wherein the hydraulic unit comprises a workbench, a lower die, an upper die and an upper beam arranged in sequence from bottom to top; a plurality of vertical slide columns are arranged between the lower die and the upper beam, the slide columns are inserted into the upper die, the upper beam is provided with an oil cylinder for driving the upper die to perform vertical lifting and reciprocating motion, a safety column is provided at the top of the upper die, the upper end of the safety column is used to vertically penetrate the upper beam upward and pass out, and the upper beam is provided with a safety lock that is plugged and matched with the top of the safety column.

[0007] Preferably: the safety lock includes a linear retractor, a telescopic movable rod inserted in the linear retractor to drive telescopic movement, and a plug-in straight handle connected to the end of the telescopic movable rod, and the top of the safety column is provided with a column slot that matches and is plug-in connected to the plug-in straight handle.

[0008] Preferably, the height of the column slot is greater than the height of the plug-in straight handle, and a detachably connected column cover is provided on the top of the safety column.

[0009] Preferably: a base connected and fixed to the upper beam is provided at the bottom of the linear expander, a U-shaped hinge joint is provided at a corresponding end of the telescopic movable rod, and the plug-in straight handle is connected to the U-shaped hinge joint for vertical rotation.

[0010] Preferably: the safety lock further comprises a limit seat, and the limit seat is provided with a limit slot matching the plug-in straight handle.

[0011] Preferably: an oil tank is arranged on the top of at least one of the hydraulic units, and the oil tank is provided with an oil delivery pipe and an oil return pipe connected to the oil cylinder.

[0012] Preferably: a wire sensor is provided between the upper beam and the upper die, and the wire sensor is used to monitor the distance between the upper die and the upper beam.

[0013] Preferably: it includes at least two hydraulic units, and a bridge is arranged between two adjacent hydraulic units, the bridge is used to match the oil pipe between the two adjacent hydraulic units, and the oil tank is arranged on the top of one of the hydraulic units, and the oil pipe is connected with an oil valve and a motor, and the motor is used to control the flow rate and flow of oil through the oil valve and into the corresponding oil cylinder.

[0014] From the above scheme, it can be seen that the present application provides a hydraulic press, which has the following beneficial effects: by safely locking the upper and lower molds when they are opened, it matches and plugs with the upper mold moved to the set high end, thereby effectively preventing the occurrence of abnormal clamping of the upper and lower molds due to cylinder pressure relief, thereby effectively improving the safety of the use of the hydraulic press. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of this embodiment;

[0016] Figure 2 is a structural schematic diagram of another angle of this embodiment;

[0017] Figure 3 It is a schematic diagram of the matching structure of the safety lock and the safety column of this embodiment.

[0018] Explanation of the reference numerals in the accompanying drawings: 1. Hydraulic unit; 11. Bridge; 2. Workbench; 3. Lower mold; 4. Upper mold; 41. Upper beam; 5. Sliding column; 6. Cylinder; 61. Oil tank; 62. Oil pipeline; 63. Oil return pipe; 7. Safety column; 71. Column slot; 72. Column cover; 8. Safety lock; 81. Linear expander; 811. Base; 82. Telescopic movable rod; 821. U-shaped hinge joint; 822. Plug-in straight handle; 83. Limit seat; 831. Limit slot; 9. Pull wire sensor. DETAILED DESCRIPTION

[0019] In order to make the technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0020] like Figure 1 As shown, a hydraulic press comprises at least one hydraulic unit 1. In the embodiment of the present application, two hydraulic units 1 are arranged one after the other, so that the material can complete the corresponding hydraulic processing when passing through the two hydraulic units 1 in sequence.

[0021] It should be noted that the hydraulic unit 1 includes a workbench 2, a lower mold 3, an upper mold 4 and an upper beam 41 arranged in sequence from bottom to top. Among them, a plurality of vertical slide columns 5 are arranged between the lower mold 3 and the upper beam 41, and the slide columns 5 are inserted into the upper mold 4. When the upper mold 4 moves in the vertical lifting direction, the slide columns 5 play an effective guiding and limiting role. A cylinder 6 for driving the upper mold 4 to perform vertical lifting and reciprocating motion is arranged on the top of the upper beam 41. The cylinder 6 realizes effective lifting and lowering control of the upper mold 4 through the input and output of hydraulic oil. In order to prevent the upper mold 4 from accidentally falling due to the pressure relief of the cylinder 6, a safety column 7 is arranged on the top of the upper mold 4, and the upper end is used to vertically penetrate the upper beam 41 and pass out, and correspondingly, a safety lock 8 is arranged on the upper beam 41 to be plugged in and matched with the top of the safety column 7. The safety lock 8 runs upward on the upper mold 4 and allows the safety column 7 to pass through the top of the upper mold 4 from bottom to top and then be plugged and matched with the safety column 7, thereby effectively preventing the safety column 7 and the upper mold 4 from falling unexpectedly, thereby significantly improving the safety of the hydraulic press.

[0022] like Figure 1 , Figure 3As shown, the safety lock 8 includes a linear retractor 81, a telescopic movable rod 82 inserted in the linear retractor 81 to drive the telescopic movement, and a plug-in straight handle 822 connected to the end of the telescopic movable rod 82. A column slot 71 matching and plug-in-connected with the plug-in straight handle 822 is provided at the top of the safety column 7. Therefore, when the top of the safety column 7 moves upward to the set position, the linear retractor 81 controls the telescopic movable rod 82 to move toward the safety column 7, and inserts the plug-in straight handle 822 into the column slot 71 of the safety column 7, thereby realizing the plug-in matching of the safety column 7 and the safety lock 8, and achieving the purpose of preventing the upper mold 4 from falling out of the mold.

[0023] It should be mentioned that the height of the column slot 71 is greater than the height of the plug-in straight handle 822, thereby reducing the difficulty of plugging and matching the plug-in straight handle 822 with the safety column 7, and is suitable for the safety lock 8 to be paired when the upper mold 4 moves upward, avoiding the risk of accidental falling during the operation of the upper mold 4. At the same time, a detachably connected column cover 72 is provided on the top of the safety column 7. The column cover 72 plays the role of abutting against the plug-in straight handle 822 and preventing the upper mold 4 from accidentally falling, and the column cover 72 is replaced in the form of a detachable connection to avoid the risk caused by the wear of the column cover 72.

[0024] like Figure 1 , Figure 2 As shown, a base 811 connected and fixed to the upper beam 41 is provided at the bottom of the linear expander 81, and a U-shaped hinge joint 821 is provided at the corresponding end of the telescopic movable rod 82, and the plug-in straight handle 822 is connected to the U-shaped hinge joint 821 for vertical rotation. Therefore, the connection between the linear expander 81 and the plug-in straight handle 822 through the U-shaped hinge joint 821 will provide more mobility between the plug-in straight handle 822 and the U-shaped hinge joint 821, avoiding the relative movement during use that affects the stability of the connection structure, thereby effectively extending the service life of the safety lock 8.

[0025] In order to further improve the matching stability between the safety lock 8 and the safety column 7 and the stability of the connection structure, the safety lock 8 is also provided with a limit seat 83, and a limit slot 831 matching the plug-in straight handle 822 is provided on the limit seat 83. Therefore, the plug-in straight handle 822 will be matched with the column slot 71 of the safety column 7 by passing through the limit slot 831. An oil tank 61 is provided on the top of one of the hydraulic units 1, and an oil delivery pipe 62 and an oil return pipe 63 connected to multiple oil cylinders 6 are provided on the oil tank 61. Here, it should be noted that the upper mold 4 is connected to at least one oil cylinder 6, and in this embodiment, the upper mold 4 in each hydraulic unit 1 is connected to two oil cylinders 6, and the four oil cylinders 6 in the two hydraulic units 1 are connected to the oil delivery pipe 62 of the oil tank 61, and the oil cylinders 6 are connected to the oil cylinder 6 through the corresponding oil return pipe 63. At the same time, a bridge 11 is provided between two adjacent hydraulic units 1. The bridge 11 is used to match the oil pipe 62 between two adjacent hydraulic units 1, and the oil pipe 62 is connected to an oil valve and a motor. The motor is used to control the flow rate and flow rate of the oil through the oil valve and into the corresponding oil cylinder 6. Therefore, the oil cylinder 6 in the hydraulic unit 1 can achieve accurate and stable lifting control of the upper mold 4.

[0026] In order to further improve the matching stability between the safety lock 8 and the safety column 7, a wire sensor 9 is provided between the upper beam 41 and the upper mold 4. The wire sensor 9 is used to monitor the distance between the upper mold 4 and the upper beam 41, and then when the distance between the upper mold 4 and the upper beam 41 gradually decreases, the linear telescopic device 81 drives the telescopic movable rod 82 to extend, and when the column slot 71 moves to the set height, the telescopic movable rod 82 is inserted into the column slot 71 and forms a preliminary match, and when the column slot 71 continues to rise with the safety column 7, the telescopic movable rod 82 gradually matches the column slot 71 completely.

[0027] In summary, the present application provides a hydraulic press, which, through the safety lock 8, matches and plugs with the upper mold 4 moved to the set high end when the upper mold 4 and the lower mold 3 are opened, thereby effectively preventing the occurrence of abnormal clamping of the upper and lower molds 3 due to pressure relief of the oil cylinder 6, thereby effectively improving the safety of the use of the hydraulic press.

[0028] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0029] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0030] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A hydraulic press, comprising at least one hydraulic unit (1), wherein the hydraulic unit (1) comprises a workbench (2), a lower die (3), an upper die (4) and an upper beam (41) arranged in sequence from bottom to top; a plurality of vertical slide columns (5) are arranged between the lower die (3) and the upper beam (41), and the slide columns (5) are inserted into the upper die (4), characterized in that: The upper beam (41) is provided with an oil cylinder (6) for driving the upper mold (4) to perform vertical lifting and reciprocating motion; the top of the upper mold (4) is provided with a safety column (7) whose upper end is used to vertically penetrate the upper beam (41) and pass out; the upper beam (41) is provided with a safety lock (8) that is plugged and matched with the top of the safety column (7).

2. A hydraulic press according to claim 1, characterized in that: The safety lock (8) comprises a linear retractor (81), a telescopic movable rod (82) inserted into the linear retractor (81) to drive telescopic movement, and a plug-in straight handle (822) connected to the end of the telescopic movable rod (82); the top of the safety column (7) is provided with a column slot (71) that matches and plugs into the plug-in straight handle (822).

3. A hydraulic press according to claim 2, characterized in that: The height of the column slot (71) is greater than the height of the plug-in straight handle (822), and a detachably connected column cover (72) is provided on the top of the safety column (7).

4. A hydraulic press according to claim 2, characterized in that: The bottom of the linear expander (81) is provided with a base (811) connected and fixed to the upper beam (41), a corresponding end of the telescopic movable rod (82) is provided with a U-shaped hinge joint (821), and the plug-in straight handle (822) is connected to the U-shaped hinge joint (821) for vertical rotation.

5. A hydraulic press according to claim 4, characterized in that: The safety lock (8) further comprises a limit seat (83), wherein the limit seat (83) is provided with a limit slot (831) matching the plug-in straight handle (822).

6. A hydraulic press according to claim 1, characterized in that: An oil tank (61) is provided on the top of at least one of the hydraulic units (1), and the oil tank (61) is provided with an oil delivery pipe (62) and an oil return pipe (63) connected to the oil cylinder (6).

7. A hydraulic press according to claim 6, characterized in that: A wire pulling sensor (9) is provided between the upper beam (41) and the upper die (4), and the wire pulling sensor (9) is used to monitor the distance between the upper die (4) and the upper beam (41).

8. A hydraulic press according to claim 6, characterized in that: The invention comprises at least two hydraulic units (1), wherein a bridge frame (11) is arranged between two adjacent hydraulic units (1), wherein the bridge frame (11) is used to match an oil pipe (62) between two adjacent hydraulic units (1), wherein an oil tank (61) is arranged on the top of one of the hydraulic units (1), and the oil pipe (62) is connected to an oil valve and a motor, wherein the motor is used to control the flow rate and flow rate of oil passing through the oil valve and flowing into the corresponding oil cylinder (6).

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