A hydraulic lifting workbench for laser cutting machine

Abstract

The present invention discloses a hydraulic lifting workbench for a laser cutting machine, comprising a chassis and a workbench arranged above the chassis, the chassis and the workbench are both rectangular structures, a base extending outward is arranged near the four corners of the outer side of the chassis, a hydraulic lifting device capable of vertical movement up and down is arranged on the base, the top of the hydraulic lifting device is connected to the workbench, and four groups of hydraulic lifting devices arranged on the chassis realize oil circuit pressure balance by connecting to an external synchronous hydraulic station, and drive the workbench to realize vertical movement up and down. The hydraulic lifting workbench of the laser cutting machine uses a hydraulic oil cylinder as a transmission method, with a high lifting and exchanging speed, a short exchanging time, and stable performance. It can bear a large area of ​​thick steel plates with a large weight, and can meet the use of high-power laser cutting machines, and has a simple structure, is easy to install and disassemble, and is relatively simple in later maintenance, reduces the cost of use, and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the field of laser cutting, and in particular to a hydraulic lifting workbench of a laser cutting machine. Background Art

[0002] The lifting and exchanging worktable of the laser cutting machine is a device used in the field of laser cutting, which can realize the rapid loading and unloading of the laser cutting machine. At present, the lifting and exchanging worktables of most laser cutting machines on the market use mechanical transmission. With the continuous advancement of laser cutting technology, high-power laser cutting machines have emerged. Due to the high power of the laser, the high-power laser cutting machine can cut steel plates with a large area, such as the 6000×2500mm steel plate currently on the market. This kind of steel plate has a large area and is relatively thick, so it is also heavy. For such large-area thick plates, the lifting worktable of the high-power laser cutting machine must be able to lift it up, and at the same time, it must have a certain speed. However, the lifting and exchanging worktable of this type of mechanical transmission laser cutting machine on the market currently has the following three disadvantages: 1. The lifting and exchanging speed of the worktable is slow and the exchange time is long; 2. The maximum weight of the workpiece that the worktable can bear is small, which cannot meet the use of high-power laser cutting machines; 3. The mechanical transmission worktable has a complex structure, a long installation time, and later maintenance is more troublesome and costly.

[0003] Therefore, the lifting and switching tables of the mechanically driven laser cutting machines currently on the market can hardly meet the needs of such large-area thick plates on high-power laser cutting machines. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hydraulic lifting worktable for a laser cutting machine which has a fast lifting speed, a large load-bearing weight and a simple structure.

[0005] In order to solve the above technical problems, the present invention is implemented through the following technical solutions: a hydraulic lifting workbench of a laser cutting machine, comprising a chassis and a workbench arranged above the chassis, the chassis and the workbench are both rectangular structures, and a base extending outward is respectively arranged on the outer side of the chassis near the four corners, and a hydraulic lifting device capable of vertical up and down movement is arranged on the base, the top of the hydraulic lifting device is connected to the workbench, and the four groups of hydraulic lifting devices arranged on the chassis achieve oil circuit pressure balance by connecting to an external synchronous hydraulic station, and drive the workbench to achieve vertical up and down movement.

[0006] Preferably, the hydraulic lifting device consists of a hydraulic cylinder, a guide device and a connecting plate; the connecting plate is fixedly arranged on the side of the workbench, the hydraulic cylinder and the guide device are arranged in parallel, their bottoms are fixedly arranged on the base, and their tops are connected to the connecting plate.

[0007] Preferably, the hydraulic cylinder consists of a main hydraulic cylinder, a lower main hinge joint connected to the lower end of the main hydraulic cylinder, and an upper main hinge joint connected to the upper end of the main hydraulic cylinder; the lower main hinge joint is fixed on the base, and the upper main hinge joint is fixed on the connecting plate at a position close to the top edge. The main hydraulic cylinder is ensured to be in a vertical state with the base through the lower main hinge joint and the upper main hinge joint.

[0008] Preferably, the guide device consists of a support seat, a guide slider, a guide column and a positioning block; the bottom of the support seat is fixed on the base, and its top is a rectangular structure. There are two positioning blocks, which are respectively fixed on the upper and lower ends of the support seat corresponding to one side of the connecting plate, and are symmetrical up and down. The upper and lower ends of the guide column are respectively connected to the upper and lower positioning blocks, and the guide slider is sleeved on the outside of the guide column and slidably cooperates with the guide column, and the back of the guide slider is fixed on the connecting plate near the bottom edge.

[0009] Preferably, an auxiliary hydraulic cylinder parallel to the main hydraulic cylinder is arranged on the outer side of the main hydraulic cylinder, and the auxiliary hydraulic cylinder and the main hydraulic cylinder are both connected in parallel to an external synchronous hydraulic station; the upper and lower ends of the auxiliary hydraulic cylinder are respectively connected by an upper auxiliary hinge fixedly arranged on a connecting plate and a lower auxiliary hinge fixedly arranged on a base; the upper auxiliary hinge is arranged in parallel with the upper main hinge, and the lower auxiliary hinge is arranged in parallel with the lower main hinge, the top ends of the main hydraulic cylinder and the auxiliary hydraulic cylinder share an upper pin shaft, which are respectively connected to the upper main hinge and the upper auxiliary hinge, and the lower ends of the main hydraulic cylinder and the auxiliary hydraulic cylinder share a lower pin shaft, which are respectively connected to the lower main hinge and the lower auxiliary hinge.

[0010] Preferably, the bottom surface of the base is provided with supporting feet capable of spirally adjusting the up and down height.

[0011] Preferably, there are four supporting legs arranged in a rectangular array at the bottom of the base.

[0012] Preferably, the upper main hinge joint, the upper auxiliary hinge joint and the connecting plate, as well as the lower main hinge joint, the lower auxiliary hinge joint and the base are all connected by bolts.

[0013] Preferably, the support seat and the base, as well as the guide slider and the connecting plate are connected by bolts.

[0014] Compared with the prior art, the advantages of the present invention are: the hydraulic lifting worktable of the laser cutting machine uses the hydraulic cylinder as the transmission method, the lifting and exchanging speed is fast, the exchanging time is short, and the performance is stable. It can carry large-area thick steel plates with heavy weight, which meets the needs of high-power laser cutting machines. It has a simple structure, is easy to install and disassemble, and is relatively simple to maintain in the later stage. The use cost is reduced and the production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the top view of the hydraulic lifting worktable of a laser cutting machine of the present invention;

[0017] Figure 2 This is a schematic diagram of the end surface structure of a hydraulic lifting worktable of a laser cutting machine of the present invention;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of a hydraulic lifting worktable of a laser cutting machine of the present invention;

[0019] Figure 4 yes Figure 3 A partial enlarged view of middle A.

[0020] In the figure: 1. chassis; 11. base; 2. workbench; 3. hydraulic lifting device; 31. main hydraulic cylinder; 311. lower main hinge; 312. upper main hinge; 32. auxiliary hydraulic cylinder; 321. lower auxiliary hinge; 322. upper auxiliary hinge; 33. upper pin; 34. lower pin; 4. support seat; 5. guide slide; 6. guide column; 7. positioning block; 8. support foot; 9. connecting plate. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figures 1 to 3 A hydraulic lifting workbench of a laser cutting machine is shown, comprising a chassis 1 and a workbench 2 arranged above the chassis 1, wherein the chassis 1 and the workbench 2 are both rectangular structures, and a base 11 extending outward is respectively arranged on the outer side of the chassis 1 near the four corners, and a hydraulic lifting device 3 capable of vertical movement up and down is arranged on the base 11, and the top of the hydraulic lifting device 3 is connected to the workbench 2, and the four groups of hydraulic lifting devices 3 arranged on the chassis 1 realize oil circuit pressure balance by connecting to an external synchronous hydraulic station, and drive the workbench 2 to realize vertical movement up and down.

[0023] like Figure 4As shown, the hydraulic lifting device 3 is composed of a hydraulic cylinder, a guide device and a connecting plate 9; the connecting plate 9 is fixedly arranged on the side of the workbench 2, the hydraulic cylinder and the guide device are arranged in parallel, the bottoms of which are fixedly arranged on the base 11, and the tops are connected to the connecting plate 9. The hydraulic cylinder is composed of a main hydraulic cylinder 31, a lower main hinge joint 311 connected to the lower end of the main hydraulic cylinder 31, and an upper main hinge joint 312 connected to the upper end of the main hydraulic cylinder 31; the lower main hinge joint 311 is fixed on the base 11, and the upper main hinge joint 312 is fixedly arranged on the connecting plate 9 near the top edge. The main hydraulic cylinder 31 is ensured to be in a vertical state with the base 11 through the lower main hinge joint 311 and the upper main hinge joint 312. The guiding device is composed of a supporting seat 4, a guiding slider 5, a guiding column 6 and a positioning block 7; the bottom of the supporting seat 4 is fixed on the base 11, and its top is a rectangular structure. There are two positioning blocks 7, which are respectively fixed on the upper and lower ends of the supporting seat 4 corresponding to one side of the connecting plate 9, and are symmetrical up and down. The upper and lower ends of the guide column 6 are respectively connected to the upper and lower positioning blocks 7, and the guiding slider 5 is sleeved on the outside of the guide column 6, and it is slidably matched with the guide column 6, and the back side of the guiding slider 5 is fixedly set on the connecting plate 9 near the bottom edge.

[0024] In order to balance the main hydraulic cylinder 32, an auxiliary hydraulic cylinder 32 parallel to the main hydraulic cylinder 31 is arranged on the outer side of the main hydraulic cylinder 31, and the auxiliary hydraulic cylinder 32 and the main hydraulic cylinder 31 are both connected in parallel to an external synchronous hydraulic station; the upper and lower ends of the auxiliary hydraulic cylinder 32 are respectively connected by an upper auxiliary hinge 322 fixedly arranged on the connecting plate 9 and a lower auxiliary hinge 321 fixedly arranged on the base 11; the upper auxiliary hinge 322 is arranged in parallel with the upper main hinge 312, and the lower auxiliary hinge 321 is arranged in parallel with the lower main hinge 311; the top ends of the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32 share an upper pin shaft 33 respectively connected to the upper main hinge 312 and the upper auxiliary hinge 322, and the lower ends of the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32 share a lower pin shaft 34 respectively connected to the lower main hinge 311 and the lower auxiliary hinge 321.

[0025] In order to ensure that the workbench is in a horizontal state, the bottom surface of the base 11 is provided with support legs 8 that can be screw-adjusted in height up and down; there are four support legs 8 that are arranged in a rectangular array at the bottom of the base 11.

[0026] In order to facilitate the installation and disassembly of the components, the upper main hinge joint 312 and the upper auxiliary hinge joint 322 are connected to the connecting plate 9, and the lower main hinge joint 311 and the lower auxiliary hinge joint 321 are connected to the base 11 by bolts. The support seat 4 is connected to the base 11, and the guide slider 5 is connected to the connecting plate 9 by bolts.

[0027] Its specific working principle is as follows: the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32 are both connected in parallel to an external synchronous hydraulic station, and the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32 are controlled by the synchronous hydraulic station to achieve lifting and lowering, wherein the main hydraulic cylinder 31 is responsible for providing thrust for the workbench 2, and the auxiliary hydraulic cylinder 32 is responsible for balancing the main hydraulic cylinder 31. When the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32 are raised or lowered, the upper main hinge joint 312 and the upper auxiliary hinge joint 322 connected at the top thereof drive the connecting plate 9, and the lifting and lowering of the workbench 2 are achieved through the connecting plate 9. At the same time, the guide slider 5 fixed on the connecting plate 9 ensures that the workbench 2 is in a straight rising or straight falling state under the limiting action of the guide column 6. At the same time, when the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32 are subjected to uneven and unbalanced force, the slidingly matched guide column 6 and the guide slider 5 can also be used as a limit to prevent the workbench 2 from swinging, thereby protecting the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32. Four groups of hydraulic lifting devices 3 are installed on a chassis 1, which can connect the reaction forces generated by the lifting of the main hydraulic cylinder 31 and the auxiliary hydraulic cylinder 32. There will be no situation where a single group of hydraulic lifting devices 3 moves too differently from other hydraulic lifting devices 3. By adjusting the height of the support legs 8 at the bottom of the base 11, the workbench 2 can be kept horizontal, which is convenient for loading and unloading.

[0028] This laser cutting machine hydraulic lifting worktable uses hydraulic cylinders as the transmission method, with fast lifting and exchanging speeds, short exchange time, and stable performance. It can carry large-area thick steel plates with heavy weight, which meets the needs of high-power laser cutting machines. It has a simple structure and is easy to install and disassemble. The subsequent maintenance is relatively simple, the cost of use is reduced, and the production efficiency is improved.

[0029] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A hydraulic lifting worktable for a laser cutting machine, comprising a chassis (1) and a worktable (2) arranged above the chassis (1), wherein the chassis (1) and the worktable (2) are both rectangular structures. Features: A base (11) extending outward is respectively arranged at a position near the four corners of the outer side of the chassis (1); a hydraulic lifting device (3) capable of vertical movement up and down is arranged on the base (11); the top of the hydraulic lifting device (3) is connected to the workbench (2); the four groups of hydraulic lifting devices (3) arranged on the chassis (1) achieve oil circuit pressure balance by connecting to an external synchronous hydraulic station, and drive the workbench (2) to achieve vertical movement up and down; the hydraulic lifting device (3) is composed of a hydraulic cylinder, a guide device and a connecting plate (9); the connecting plate (9) is fixedly arranged on the side of the workbench (2); the hydraulic cylinder and the guide device are arranged in parallel, the bottoms of which are fixedly arranged on the base (11) and the tops of which are connected to the connecting plate (9). The connecting plate (9) is connected; the hydraulic cylinder is composed of a main hydraulic cylinder (31), a lower main hinge joint (311) connected to the lower end of the main hydraulic cylinder (31), and an upper main hinge joint (312) connected to the upper end of the main hydraulic cylinder (31); the lower main hinge joint (311) is fixed to the base (11), and the upper main hinge joint (312) is fixedly arranged on the connecting plate (9) at a position close to the top edge, and the main hydraulic cylinder (31) is ensured to be in a vertical state with the base (11) through the lower main hinge joint (311) and the upper main hinge joint (312); the guiding device is composed of a supporting seat (4), a guiding slide block (5), a guiding column (6) and a positioning block (7); the bottom of the supporting seat (4) is fixed to the base (11) ), the top of which is a rectangular structure, the positioning blocks (7) having two, which are respectively fixedly arranged at the upper and lower ends of the support seat (4) corresponding to the side of the connecting plate (9), and are symmetrical up and down, the upper and lower ends of the guide column (6) are respectively connected to the upper and lower positioning blocks (7), the guide slider (5) is sleeved on the outside of the guide column (6), and it is slidably matched with the guide column (6), and the back of the guide slider (5) is fixedly arranged on the connecting plate (9) near the bottom edge; the outer side of the main hydraulic cylinder (31) is provided with an auxiliary hydraulic cylinder (32) parallel to it, and the auxiliary hydraulic cylinder (32) and the main hydraulic cylinder (31) are both connected in parallel to an external synchronous hydraulic station; the auxiliary hydraulic cylinder (32) The upper and lower ends of the main hydraulic cylinder (31) and the auxiliary hydraulic cylinder (32) are connected respectively by an upper auxiliary hinge joint (322) fixedly arranged on the connecting plate (9) and a lower auxiliary hinge joint (321) fixedly arranged on the base (11); the upper auxiliary hinge joint (322) and the upper main hinge joint (312) are arranged in parallel, and the lower auxiliary hinge joint (321) and the lower main hinge joint (311) are arranged in parallel; the top ends of the main hydraulic cylinder (31) and the auxiliary hydraulic cylinder (32) share an upper pin shaft (33) and are respectively connected to the upper main hinge joint (312) and the upper auxiliary hinge joint (322); the lower ends of the main hydraulic cylinder (31) and the auxiliary hydraulic cylinder (32) share a lower pin shaft (34) and are respectively connected to the lower main hinge joint (311) and the lower auxiliary hinge joint (321).

2. According to the laser cutting machine hydraulic lifting table of claim 1, Features: The bottom surface of the base (11) is provided with a support foot (8) capable of screw-adjusting the vertical height.

3. The hydraulic lifting table of the laser cutting machine according to claim 2, Features: There are four supporting legs (8) arranged in a rectangular array at the bottom of the base (11).

4. The hydraulic lifting table of the laser cutting machine according to claim 1, Features: The upper main hinge joint (312) and the upper auxiliary hinge joint (322) are connected to the connecting plate (9), and the lower main hinge joint (311) and the lower auxiliary hinge joint (321) are connected to the base (11) via bolts.

5. The hydraulic lifting table of the laser cutting machine according to claim 1, Features: The support seat (4) and the base (11) as well as the guide slider (5) and the connecting plate (9) are connected via bolts.

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