A protective mechanism for a four-column hydraulic press

Abstract

This utility model discloses a protective mechanism for a four-column hydraulic press, including a base, a worktable, and an upper crossbeam. The worktable is located above the base and is connected to the base via a buffer assembly. The upper crossbeam is located above the worktable, and a hydraulic cylinder is located at the top of the upper crossbeam. A fluid inlet pipe is located on the hydraulic cylinder, and a pressure sensor is located on the fluid inlet pipe. Storage slots are located on both sides of the worktable. When in use, this protective mechanism for the four-column hydraulic press uses the buffer assembly below to cushion the worktable, reducing slack during processing. During use, the pressure sensor detects the pressure of the hydraulic oil. When the hydraulic oil pressure decreases, the hydraulic cylinder may lose its supporting force on the movable crossbeam, causing the movable crossbeam to fall. An external controller, in conjunction with a support assembly, supports the falling movable crossbeam, reducing the impact force of the falling movable crossbeam and providing better support to prevent equipment damage or personnel injury due to the falling movable crossbeam.

Description

Technical Field

[0001] This utility model relates to the technical field of protection mechanisms for four-column hydraulic presses, specifically a protection mechanism for four-column hydraulic presses. Background Technology

[0002] A hydraulic press (a type of hydraulic press) is a machine that uses special hydraulic oil as the working medium and a hydraulic pump as the power source. The pump's force forces the hydraulic oil through hydraulic lines into the cylinder / piston. The cylinder / piston contains several sets of mutually cooperating seals, each with different seals at different locations, but all serving the purpose of sealing to prevent hydraulic oil leakage. Finally, a one-way valve allows the hydraulic oil to circulate in the oil tank, causing the cylinder / piston to perform work and thus complete a certain mechanical action, thus serving as a productive force.

[0003] In the operation of existing four-column hydraulic presses, hydraulic oil is input into the cylinders. If the hydraulic oil pressure is too low or there is a leak in the system, the hydraulic pressure supporting the movable crossbeam may be insufficient to maintain its position, causing the movable crossbeam to slowly descend or fall, which may result in injury to the operator or damage to the equipment. Therefore, we propose a protective mechanism for four-column hydraulic presses to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a protection mechanism for a four-column hydraulic press, so as to solve the problem that the movable crossbeam falls off when the hydraulic oil pressure is too low when using the protection mechanism for a four-column hydraulic press mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective mechanism for a four-column hydraulic press, comprising a base, a worktable, and an upper crossbeam;

[0006] The base and the workbench are connected by a buffer assembly. An upper crossbeam is provided above the workbench. A hydraulic cylinder is provided at the top of the upper crossbeam. An infusion tube is provided on the hydraulic cylinder. A pressure sensor is provided on the infusion tube. Storage slots are provided on both sides of the workbench. Support assemblies are provided in each storage slot.

[0007] The support assembly includes an assembly block, an electromagnet, a support spring, and a support plate. The assembly block is housed within the receiving slot, and a movable slot is provided within the assembly block. A first slider is slidably disposed within the movable slot, and a limiting slot is provided within the movable slot. Electromagnets are located on both sides inside the first slider, and the electromagnets are connected to a push rod. The push rod is slidably connected to the first slider and is adapted to the limiting slot. A support spring is located within the movable slot and is connected to the first slider. First support rods are hinged to both sides of the first slider. One end of each of the two sets of first support rods is hinged to both sides of the support plate. A second support rod is hinged to the middle of the first support rods, and the lower end of the second support rod is hinged to the side wall of the assembly block. A second slider is slidably disposed within the support plate, and one end of the second support rod is hinged to the second slider.

[0008] As a preferred embodiment of this invention, the pressure sensor is connected to an external controller, and the electromagnet is controlled by the external controller.

[0009] As a preferred technical solution of this utility model, the workbench is provided with columns at the four corners, and the four sets of columns are provided with movable crossbeams, with the top of the columns connected to the bottom of the upper crossbeam.

[0010] As a preferred embodiment of this utility model, the output end of the hydraulic cylinder passes through the upper crossbeam and is connected to the top of the movable crossbeam, and the infusion pipe is connected to the external oil tank.

[0011] As a preferred embodiment of this utility model, the worktable is provided with movable rods on both sides, and the front end of the movable rods slides through the assembly block and connects to the internal movable groove.

[0012] As a preferred embodiment of this utility model, the workbench is provided with a hydraulic rod, and the output end of the hydraulic rod is connected to one end of the moving rod.

[0013] As a preferred technical solution of this utility model, the buffer assembly includes a fixed rod, a shock-absorbing spring, a movable block, a connecting rod, and a connector. The top of the base is provided with a groove, and fixed rods are provided on both sides of the groove. A shock-absorbing support spring is sleeved on the two sets of fixed rods. Movable blocks are slidably provided at both ends of the groove. Both sets of movable blocks are slidably connected to the fixed rods. A connecting rod is hinged to the top of the two sets of movable blocks. One end of the connecting rod is hinged to the connector. The top of the connector is fixedly connected to the bottom of the worktable.

[0014] As a preferred technical solution of this utility model, the base is provided with damping springs at the four corners, and the upper ends of the four sets of damping springs are respectively connected to the four corners of the bottom of the workbench.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: When the protection mechanism for the four-column hydraulic press is in use, the buffer component below buffers the worktable, reducing the slow movement during the processing. During use, the pressure sensor detects the pressure of the hydraulic oil. When the hydraulic oil pressure decreases, the cylinder may lose its supporting force on the movable crossbeam, causing the movable crossbeam to fall. The external controller, in conjunction with the support component, supports the falling movable crossbeam, reducing the impact force of the falling movable crossbeam, and at the same time better supporting the movable crossbeam, avoiding equipment damage or personal injury caused by the falling movable crossbeam. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the support component structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the first slider cross-section structure of this utility model.

[0020] In the diagram: 1. Base; 2. Workbench; 3. Upper crossbeam; 4. Buffer assembly; 401. Fixed rod; 402. Shock-absorbing spring; 403. Moving block; 404. Connecting rod; 405. Connector; 5. Hydraulic cylinder; 6. Infusion tube; 7. Pressure sensor; 8. Storage slot; 9. Support assembly; 901. Assembly block; 902. Electromagnet; 903. Support spring; 904. Support plate; 10. First slider; 11. Limiting groove; 12. First support rod; 13. Second support rod; 14. Second slider; 15. Top rod; 16. Column; 17. Movable crossbeam; 18. Moving rod; 19. Hydraulic rod; 20. Damping spring. Detailed Implementation

[0021] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: a protection mechanism for a four-column hydraulic press, including a base 1, a worktable 2, and an upper crossbeam 3. The worktable 2 has four columns 16 at its four corners, and four sets of columns 16 are equipped with movable crossbeams 17. The tops of the columns 16 are connected to the bottoms of the upper crossbeams 3. The base 1 has four damping springs 20 at its four corners, and the upper ends of the four sets of damping springs 20 are respectively connected to the four bottom corners of the worktable 2. The base 1 and the worktable 2 are connected by a buffer assembly 4, which includes a fixed rod 401, a shock-absorbing spring 402, a moving block 403, a connecting rod 404, and a connecting piece 405. The top of the base 1 has a groove, and fixed rods 401 are provided on both sides of the groove. Shock-absorbing support springs 903 are sleeved on the two sets of fixed rods 401. The workbench 2 is equipped with sliding blocks 403 at both ends. Both sets of sliding blocks 403 are slidably connected to fixed rods 401. The top of the two sets of sliding blocks 403 are hinged to connecting rods 404. One end of the connecting rod 404 is hinged to the connecting piece 405. The top of the connecting piece 405 is fixedly connected to the bottom of the workbench 2. The workbench 2 is equipped with an upper crossbeam 3. The top of the upper crossbeam 3 is equipped with a hydraulic cylinder 5. The hydraulic cylinder 5 is equipped with an infusion pipe 6. The infusion pipe 6 is equipped with a pressure sensor 7. The pressure sensor 7 is connected to an external controller. The electromagnet 902 is controlled by the external controller. The output end of the hydraulic cylinder 5 passes through the upper crossbeam 3 and is connected to the top of the movable crossbeam 17. The infusion pipe 6 is connected to an external oil tank. The workbench 2 is equipped with storage slots 8 on both sides. Each storage slot 8 is equipped with a support component 9.

[0023] In use, hydraulic oil is delivered to the cylinder 5 through the infusion pipe 6. The cylinder 5 drives the movable crossbeam 17 to slide above the column 16. The movable crossbeam 17, in conjunction with the worktable 2 below, processes the workpiece. During the processing, the worktable 2 may shake. At this time, the damping springs 20 at the four corners of the worktable 2 reduce the vibration. At the same time, the worktable 2 drives the connecting piece 405 to move. The connecting piece 405 drives the connecting rods 404 on both sides to adjust through the hinge shaft. This causes the connecting rods 404 to drive the moving block 403 to slide above the fixed rod 401. At the same time, the damping spring 402 retracts to buffer the worktable 2 and reduce the shaking of the worktable 2 during the processing.

[0024] Support assembly 9 includes assembly block 901, electromagnet 902, support spring 903, and support plate 904. Assembly block 901 is located within storage slot 8. Assembly block 901 has a movable slot within it. A first slider 10 is slidably mounted within the movable slot. A limiting slot 11 is also located within the movable slot. Electromagnets 902 are located on both sides of the first slider 10. Electromagnets 902 are connected to push rod 15. Push rod 15 is slidably connected to the first slider 10 and is adapted to the limiting slot 11. Support spring 903 is located within the movable slot and is connected to the first slider 10. The first slider 10 has two... A first support rod 12 is provided with a side hinge. One end of the two sets of first support rods 12 is hinged to both sides of the support plate 904. A second support rod 13 is hinged to the middle position of the first support rod 12. The lower end of the second support rod 13 is hinged to the side wall of the assembly block 901. A second slider 14 is slidably provided inside the support plate 904. One end of the second support rod 13 is hinged to the second slider 14. Moving rods 18 are slidably provided on both sides of the worktable 2. The front end of the moving rod 18 slides through the assembly block 901 and connects to the internal movable groove. A hydraulic rod 19 is provided on the worktable 2. The output end of the hydraulic rod 19 is connected to one end of the moving rod 18.

[0025] During use, the pressure sensor 7 above the infusion tube 6 detects the pressure of the hydraulic oil. When the hydraulic oil pressure decreases, it may cause the cylinder 5 to lose its supporting force on the movable crossbeam 17, causing the movable crossbeam 17 to fall. When the pressure sensor 7 detects a significant drop in pressure, it controls the electromagnet 902 through an external controller, causing the electromagnet 902 to drive the push rod 15 to retract, thus removing the push rod 15 from the limiting groove 11 inside the assembly block 901. Since the support spring 903 is in a compressed state, when the push rod 15 moves out of the limiting groove 11, the support spring 903 instantly resets, causing the first slider 10 to slide inside the movable groove. The first slider 10 then drives the first support rod 12 to adjust via the hinge shaft. At the same time, the first support rod 12 drives the second support rod 13 to adjust via the hinge shaft, causing the second support rod 13 to drive the second slider 14 to slide in the movable groove inside the support plate 904, causing the support plate 904 to pop out of the storage groove 8 inside the worktable 2. When the movable crossbeam 17... After falling, the support plate 904 can provide support. Since the movable crossbeam 17 has a certain weight, after the movable crossbeam 17 hits the support plate 904, the second slider 14 and the first slider 10 slide inside the assembly block 901 and the support plate 904 respectively. Since the support spring 903 inside the assembly block 901 is a high-strength spring, the support spring 903 slows down the movement speed of the first slider 10 and gradually reduces the impact force until the movable crossbeam 17 stops moving. The specific strength of the support spring 903 needs to be replaced according to the weight of the movable crossbeam 17, so as to better support the movable crossbeam 17 and avoid equipment damage or personnel injury due to the movable crossbeam 17 falling. After use, the hydraulic rod 19 drives the moving rod 18 to move, and the moving rod 18 pushes the first slider 10, while the support plate 904 is put into the storage groove 8. At the same time, the support spring 903 retracts. When the first slider 10 moves to the designated position, the electromagnet 902 drives the push rod 15 to be inserted into the limiting groove 11 for fixation.

[0026] Working Principle: When using the protection mechanism for a four-column hydraulic press, hydraulic oil is supplied to the cylinder 5 via the inlet pipe 6. The cylinder 5 then drives the movable crossbeam 17 to slide above the column 16. The movable crossbeam 17, in conjunction with the worktable 2 below, processes the workpiece. During processing, the worktable 2 may wobble. Damping springs 20 at the four corners of the worktable 2 absorb this vibration. Simultaneously, the worktable 2 moves the connecting piece 405. The connecting piece 405, via a hinge shaft, adjusts the connecting rods 404 on both sides, causing the connecting rods 404 to slide the moving block 403 above the fixed rod 401. At the same time, the damping springs 402 retract, buffering the worktable 2 and reducing vibrations during processing. During operation, the pressure sensor 7 above the infusion tube 6 detects the hydraulic oil pressure. If the hydraulic oil pressure decreases, the cylinder 5 may lose its supporting force on the movable crossbeam 17, causing it to fall. When the pressure sensor 7 detects a significant pressure drop, it controls the electromagnet 902 via an external controller. This causes the electromagnet 902 to drive the push rod 15 to retract, disengaging it from the limiting groove 11 inside the assembly block 901. Since the support spring 903 is already compressed, it instantly resets after the push rod 15 moves out of the limiting groove 11. This causes the first slider 10 to slide within the movable groove, and the first slider 10 then drives the second slider 10 via a hinge shaft. A support rod 12 is adjusted, and simultaneously, the first support rod 12 drives the second support rod 13 to be adjusted via a hinge shaft. This causes the second support rod 13 to drive the second slider 14 to slide in the movable groove inside the support plate 904, allowing the support plate 904 to pop out of the storage groove 8 inside the worktable 2. When the movable crossbeam 17 falls, it can be supported by the support plate 904. Since the movable crossbeam 17 has a certain weight, after the movable crossbeam 17 impacts the support plate 904, the second slider 14 and the first slider 10 slide inside the assembly block 901 and the support plate 904, respectively. Since the support spring 903 inside the assembly block 901 is a high-strength spring, the support spring 903 slows down the movement speed of the first slider 10, gradually reducing the impact force until the movable crossbeam 17 falls. When the crossbeam 17 stops moving, the specific strength of the support spring 903 needs to be replaced according to the weight of the movable crossbeam 17 to better support the movable crossbeam 17 and prevent equipment damage or personal injury caused by the movable crossbeam 17 falling. After use, the hydraulic rod 19 drives the moving rod 18 to move, and the moving rod 18 pushes the first slider 10, while the support plate 904 is retracted into the storage groove 8. At the same time, the support spring 903 retracts. When the first slider 10 moves to the designated position, the electromagnet 902 drives the push rod 15 to be inserted into the limiting groove 11 for fixation, thus completing a series of operations. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A protective mechanism for a four-column hydraulic press, comprising a base (1), a worktable (2), and an upper crossbeam (3); Its features are: The base (1) and the workbench (2) are connected by a buffer assembly (4). The workbench (2) is provided with an upper crossbeam (3). The top of the upper crossbeam (3) is provided with a hydraulic cylinder (5). The hydraulic cylinder (5) is provided with an infusion pipe (6). The infusion pipe (6) is provided with a pressure sensor (7). The workbench (2) is provided with storage slots (8) on both sides. Each storage slot (8) is provided with a support assembly (9). The support assembly (9) includes an assembly block (901), an electromagnet (902), a support spring (903), and a support plate (904). The storage slot (8) contains the assembly block (901), which has a movable slot. A first slider (10) is slidably disposed in the movable slot, and a limiting slot (11) is provided in the movable slot. Electromagnets (902) are provided on both sides inside the first slider (10). The electromagnets (902) are connected to the top rod (15), and the top rod (15) is slidably connected to the first slider (10). The top rod (15) and the limiting slot (11) are connected. The movable groove is equipped with a support spring (903), which is connected to the first slider (10). The first slider (10) is hinged to both sides with a first support rod (12). One end of the two sets of first support rods (12) is hinged to both sides of the support plate (904). A second support rod (13) is hinged to the middle position of the first support rod (12). The lower end of the second support rod (13) is hinged to the side wall of the assembly block (901). A second slider (14) is slidably provided in the support plate (904). One end of the second support rod (13) is hinged to the second slider (14).

2. The protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The pressure sensor (7) is connected to an external controller, and the electromagnet (902) is controlled by the external controller.

3. The protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The workbench (2) has four columns (16) at its four corners, and four sets of columns (16) are equipped with movable crossbeams (17). The top of the columns (16) is connected to the bottom of the upper crossbeam (3).

4. The protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The output end of the oil cylinder (5) passes through the upper crossbeam (3) and is connected to the top of the movable crossbeam (17). The infusion pipe (6) is connected to the external oil tank.

5. A protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The workbench (2) is provided with sliding rods (18) on both sides, and the front end of the sliding rods (18) slides through the assembly block (901) and connects to the internal movable groove.

6. A protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The workbench (2) is provided with a hydraulic rod (19), and the output end of the hydraulic rod (19) is connected to one end of the moving rod (18).

7. A protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The buffer assembly (4) includes a fixed rod (401), a shock-absorbing spring (402), a moving block (403), a connecting rod (404), and a connector (405). The base (1) has a groove at the top, and fixed rods (401) are provided on both sides of the groove. Shock-absorbing support springs (903) are sleeved on the two sets of fixed rods (401). Moving blocks (403) are slidably provided at both ends of the groove. Both sets of moving blocks (403) are slidably connected to the fixed rods (401). Connecting rods (404) are hinged at the top of the two sets of moving blocks (403). One end of the connecting rod (404) is hinged to the connector (405). The top of the connector (405) is fixedly connected to the bottom of the workbench (2).

8. A protection mechanism for a four-column hydraulic press according to claim 1, characterized in that, The base (1) is provided with damping springs (20) at its four corners, and the upper ends of the four sets of damping springs (20) are respectively connected to the four corners of the bottom of the workbench (2).

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