Shearing machine, anti-leakage oil pressing device, and plate pressing method

Abstract

The present invention discloses a plate shearing machine and an anti-leakage oil pressing device and a plate pressing method, comprising a pressing beam, both ends of the pressing beam are equipped with pressing devices, two sets of pressing devices each include a pressing oil cylinder driving the pressing beam downward, an eccentric side guide wheel guiding the pressing beam when it moves, and a pressing beam return cylinder driving the pressing beam upward, and a plurality of sets of pressing components for pressing the plate are installed at the bottom of the pressing beam. The pressing beam return cylinder, the pressing oil cylinder piston rod and the pressing beam are all non-rigidly connected. That is, the pressing beam and the pressing cylinder are redesigned to completely avoid the pollution of the processed plate and the work surface caused by oil leakage, so that when the plate shearing machine shears special materials (nickel plate, copper plate), it can avoid the pollution of the plate caused by hydraulic oil leakage and does not affect the shearing quality.

Description

Technical Field

[0001] The present invention relates to the technical field of shearing machines, and specifically to a shearing machine and an anti-leakage oil pressing device and a plate pressing method, that is, the pressing beam and the pressing cylinder are redesigned to completely avoid the contamination of the processed special material plate and the work surface by oil leakage. Background Art

[0002] The pressing method of conventional shearing machine is as follows Figures 1 to 3 As shown (for example: CN111102267A), the pressing cylinder is installed on the pressing beam at the lower front, and the hydraulic system provides pressure oil to enter the cylinder body of the pressing cylinder. The pressure oil pushes the piston rod (pressure head) downward to press the plate to be sheared. At this time, the spring is in a stretched state. After the processing is completed, the pressure of the hydraulic system returns to zero, and the pressure head returns to its initial state under the action of the spring elastic force. This pressing device will inevitably leak oil during use, and it will leak in the shearing processing area, contaminating the processed plate. The pressing cylinder needs to be removed and replaced after it is damaged, and the oil stored in the cylinder body will inevitably leak out, contaminating the processed plate and the work surface.

[0003] As special customers have more and more requirements for shearing machines to process special plates (for example, nickel plates and copper plates), these plates are generally required not to be contaminated by hydraulic oil. Therefore, oil leakage prevention design is very important, and the structure of the shearing machine needs to be effectively changed. Therefore, how to design the pressure beam so that the shearing machine can avoid the contamination of the plate by hydraulic oil leakage when shearing special materials without affecting the shearing quality is a difficult problem that needs to be solved urgently in this field. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art. Therefore, a shearing machine, an anti-leakage oil pressing device, and a plate pressing method are proposed. That is, the pressing beam and the pressing cylinder are redesigned to completely avoid the contamination of the processed plate and the work surface by oil leakage, so that the shearing machine can avoid the contamination of the plate by hydraulic oil leakage when shearing special materials (nickel plate, copper plate) without affecting the shearing quality.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An anti-leakage oil pressing device includes a pressing beam, and pressing devices are installed at both ends of the pressing beam. Both sets of pressing devices include a pressing oil cylinder that drives the pressing beam to move downward, an eccentric side guide wheel that guides the pressing beam when it moves, and a pressing beam return cylinder that drives the pressing beam to move upward. A plurality of pressing components for pressing plates are installed at the bottom of the pressing beam. The pressing beam return cylinder, the pressing oil cylinder piston rod and the pressing beam are all non-rigidly connected.

[0007] On the basis of the above scheme, the following improvements are made: each group of the pressing assembly includes a presser foot holding cylinder, and a high-strength elastic polyurethane block and a guide shaft are installed in the presser foot holding cylinder from top to bottom, a double-headed screw is installed on the guide shaft, and the top of the double-headed screw passes through the presser foot holding cylinder and a nut is installed at the end, and the bottom of the guide shaft extends to a distance from the bottom of the presser foot holding cylinder and a presser foot plate is installed at the end through an elastic pin.

[0008] Based on the above solution, the following improvement is made: at least one guide belt is installed between the outer ring of the guide shaft and the inner wall of the presser foot retaining cylinder.

[0009] Based on the above solution, the following improvement is made: the presser foot plates on two adjacent groups of press components are tightly connected.

[0010] Based on the above scheme, the following improvement is made: the eccentric side guide wheel includes a screw installed on the pressing beam, the outer side of the screw is sleeved with a spacer sleeve and an eccentric sleeve, and the eccentric sleeve is installed with a side roller.

[0011] On the basis of the above solution, the following improvement is made: slidingly matched guide rails are arranged at the front and rear ends of both sides of the pressing beam.

[0012] A plate shearing machine comprises the anti-leakage oil pressing device as described above.

[0013] A plate pressing method for a plate shearing machine including the above-mentioned anti-leakage oil pressing device, the plate pressing steps are as follows:

[0014] First, place the nickel plate / copper plate on the base platform, the hydraulic system works and discharges the pressurized oil into the upper chamber of the press cylinder to push the piston rod to drive the press beam to move downward, and the guidance of the downward process is completed by the sliding of the guide rails and the guide grooves arranged in the front and back. After the shearing action is completed, the hydraulic system works and discharges the pressurized oil into the lower chamber of the return cylinder of the press beam to push the piston rod to drive the press beam to move upward, return to the initial position, and wait for the next shearing action.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The shearing machine and anti-leakage oil pressing device described in this patent completely abandon the conventional design concept, and change the traditional fixed pressing beam into an up-and-down moving pressing beam. The front guide rail and the rear guide rail of this structure are sliding guide rails, and the eccentric side guide wheel is used as the side rolling guide, so that the pressing beam can move up and down stably. The eccentric sleeve of the eccentric side guide wheel can also adjust the tightness of the left and right side guide wheels. The pressing cylinder is installed on both sides of the outside of the machine (i.e., above the pressing beam). The pressure oil discharged by the hydraulic system enters the upper chamber of the pressing cylinder to push the piston rod to drive the pressing beam to move downward to press the sheet material. Several pressing assemblies are installed under the pressing beam, and the pressure foot plate under the pressing assembly is closely connected with other pressure foot plates in pairs. Such a design with a large pressing area greatly relaxes the size restriction of the processed sheet material (the pressing area of ​​the conventional pressing foot is small (such as Figure 1 As shown in the figure), it only has a good effect on wide and long plates. Install the return cylinder of the press beam on both sides of the machine (below the press beam). After the shearing action is completed, the pressurized oil discharged by the hydraulic system enters the lower chamber of the return cylinder of the press beam to push the piston rod to drive the press beam to move upward and return to the initial position, waiting for the next shearing action.

[0017] Installing the hydraulic cylinder on the outside of the machine completely avoids oil contamination of the sheet and the work surface during the shearing process. Even when maintaining and replacing the cylinder, no contamination will occur. The conventional pressing cylinder returns through the elastic force of the spring. Although it is simple enough, the spring is very easy to fail under long-term tension, resulting in an inability to return. The pressing beam return cylinder provided in the present invention is an independent hydraulic circuit, which can independently control the return action. The welded pressing assembly is also more durable, and the high-strength polyurethane polymer material used inside also has a certain elasticity, and also has a certain buffering effect during use, which effectively avoids damage to components under instantaneous strong pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural front view of the traditional shearing machine pressing device;

[0019] Figure 2 It is a side view of the overall structure of the pressing device of a traditional shearing machine;

[0020] Figure 3 This is a cross-sectional view of the pressing cylinder of the pressing device of a conventional shearing machine;

[0021] Figure 4 A front view of the redesigned anti-leakage oil pressing device of the present invention;

[0022] Figure 5 A side cross-sectional view of the redesigned anti-leakage oil pressing device of the present invention;

[0023] Figure 6 A cross-sectional view of the eccentric side guide wheel of the oil-leakage-proof pressing device redesigned for the present invention;

[0024] Figure 7 A schematic diagram of the internal structure of a material pressing assembly of the oil leakage prevention material pressing device redesigned according to the present invention;

[0025] Figure 8 A bottom view of the redesigned anti-leakage oil pressing device of the present invention.

[0026] In the figure: 10, press beam; 11, guide groove; 20, press cylinder; 30, eccentric side guide wheel; 31, screw; 32, spacer; 33, eccentric sleeve; 34, side roller; 40, press beam return cylinder; 50, press assembly; 51, press foot retaining cylinder; 52, high-strength elastic polyurethane block; 53, guide shaft; 54, double-headed screw; 55, nut; 56, elastic pin; 57, press foot plate; 58, guide belt; 60, guide rail. Implementation

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Example 1: Figure 4 , Figure 5 , Figure 7An anti-leakage oil pressing device includes a pressing beam 10 and wall panels on both sides. The two ends of the pressing beam 10 penetrate the wall panels and are arranged to move up and down relative to the wall panels. Pressing devices are installed on both ends of the two sides. Two sets of pressing devices include a pressing cylinder 20 that drives the pressing beam 10 to move downward, an eccentric side guide wheel 30 that guides the pressing beam 10 when it moves, and a pressing beam return cylinder 40 that drives the pressing beam 10 to move upward. The pressing beam return cylinder 40 and the pressing cylinder 20 are arranged on the wall panels and are respectively located on the lower and upper sides of the pressing beam 10. The pressing beam return cylinder 40 is an independent hydraulic circuit that can independently control the return action. The pressing cylinder 20 also uses an independent hydraulic circuit. The two cylinders are not hard-connected to the pressing beam 10. If one cylinder is used, a method must be found to connect the cylinder and the pressing beam together to complete the corresponding return. Setting up two cylinders can avoid the return impact, vibration and noise caused by using only the pressing cylinder, and achieve stable pressure relief and flexible return. At the same time, it can also avoid the occurrence of oil leakage and piston non-return when using only the pressing cylinder.

[0030] A plurality of pressing components 50 for pressing the sheet material are installed at the bottom of the pressing beam 10, and each group of pressing components 50 includes a presser foot holding tube 51 and its top is fixed to the pressing beam 10 by welding. A high-strength elastic polyurethane block 52 and a guide shaft 53 are installed in the presser foot holding tube 51 from top to bottom, and a double-headed screw 54 is installed on the guide shaft 53. The top of the double-headed screw 54 passes through the high-strength elastic polyurethane block 52 and the presser foot holding tube 51, and a nut 55 is installed at its own end. The bottom of the guide shaft 53 extends to a distance from the bottom of the presser foot holding tube 51, and a presser foot plate 57 is installed at the end through an elastic pin 56.

[0031] When in use, the hydraulic oil discharged from the upper chamber of the press cylinder 20 through the hydraulic system drives the piston rod to move the press beam 10 downward. The downward movement of the press beam 10 causes the numerous presser plates 57 to contact the sheet material first, and then as the piston rod continues to move downward, the guide shaft 53 moves downward, forcing the high-strength elastic polyurethane block 52 to be compressed and deformed. The top of the presser plate 75 will fit against the end of the presser foot retaining tube 51, and the sheet material will be pressed and fixed, and then shearing will be performed. After the shearing is completed, the hydraulic oil discharged from the lower chamber of the press beam return cylinder 40 through the hydraulic system drives the piston rod to move the press beam 10 upward. The upward movement of the press beam 10 causes the numerous high-strength elastic polyurethane blocks 52 to elastically reset to the initial state until all the presser plates 57 are reset and return to the initial position height, waiting for the next shearing action.

[0032] Example 2: Figure 7 As shown, the following improvements are made on the basis of the above embodiment: two guide belts 58 are installed between the outer ring of the guide shaft 53 and the inner wall of the presser foot holding cylinder 51. The guide belts 58 can reduce the friction and friction work between the moving parts, reduce the invalid work and heat.

[0033] Embodiment 3: Based on the above embodiment, the following improvements are made: Figure 8 As shown, the presser feet 57 on two adjacent sets of presser assemblies 50 are closely connected. The closely connected here can be a narrow gap between the two or two presser feet 57 can be fixedly installed in a splicing manner. Such a design with a large presser area greatly relaxes the size restrictions on the processed sheet material. Conventional presser feet have a small presser area (such as Figure 1 As shown), it only works well for wide and long boards.

[0034] Example 4: Figure 6 As shown, the following improvements are made on the basis of the above embodiment: the eccentric side guide wheel 30 includes a screw 31 installed on the press beam 10, and the outer side of the screw 31 is sleeved with a spacer sleeve 32 and an eccentric sleeve 33, and the eccentric sleeve 33 is installed with a side roller 34. The front and rear sides of both ends of the press beam 10 are both provided with guide rails 60 for sliding fit.

[0035] This structure uses the front guide rail 60 and the rear guide rail 60 as sliding guide rails and the eccentric side guide wheel 30 as a side rolling guide, so that the pressing beam 10 can move stably up and down. The eccentric sleeve 33 of the eccentric side guide wheel 10 can also adjust the tightness of the left and right side guide wheels.

[0036] Embodiment 5: A shearing machine, comprising an anti-leakage oil pressing device as described in any group of the above embodiments.

[0037] Embodiment 6: A plate pressing method for a shearing machine including any one of the sets of anti-leakage oil pressing devices in Embodiments 1-4 above, wherein the plate pressing steps are as follows:

[0038] First, place the nickel plate / copper plate on the base platform, the hydraulic system works and discharges the pressurized oil into the upper chamber of the press cylinder 20 to push the piston rod to drive the press beam 10 to move downward, and the guidance of the downward process is completed by the sliding of the guide rail 60 and the guide groove 11 arranged in front and behind. After the shearing action is completed, the hydraulic system works and discharges the pressurized oil into the lower chamber of the press beam return cylinder 40 to push the piston rod to drive the press beam 10 to move upward, return to the initial position, and wait for the next shearing action.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An anti-leakage oil pressing device, comprising a pressing beam (10) and wall panels located on both sides, characterized in that: The two end portions of the pressing beam (10) are both provided with pressing devices, and the two sets of pressing devices both comprise a pressing oil cylinder (20) for driving the pressing beam (10) to move downward, an eccentric side guide wheel (30) for guiding the pressing beam (10) when it moves, and a pressing beam return cylinder (40) for driving the pressing beam (10) to move upward, and a plurality of sets of pressing components (50) for pressing the plate are installed at the bottom of the pressing beam (10); The return cylinder (40) of the pressing beam and the pressing oil cylinder (20) are both arranged on the wall plate and are respectively located on the lower and upper sides of the pressing beam (10). The return cylinder (40) of the pressing beam is an independent hydraulic circuit, and the pressing oil cylinder (20) also adopts an independent hydraulic circuit. The two oil cylinders are not hard-connected to the pressing beam (10). Each group of the presser assembly (50) comprises a presser foot holding cylinder (51), a high-strength elastic polyurethane block (52) and a guide shaft (53) are sequentially installed inside the presser foot holding cylinder (51) from top to bottom, a double-headed screw (54) is installed on the guide shaft (53), and the top of the double-headed screw (54) passes through the presser foot holding cylinder (51) and a nut (55) is installed at the end, the bottom of the guide shaft (53) extends to a distance from the bottom of the presser foot holding cylinder (51) and a presser foot plate (57) is installed at the end through an elastic pin (56); The presser foot plates (57) on two adjacent groups of presser assemblies (50) are tightly connected; Sliding guide rails (60) are arranged at both ends of the two sides of the pressing beam (10) at the front and rear.

2. The anti-leakage oil pressing device according to claim 1, characterized in that: At least one guide belt (58) is installed between the outer ring of the guide shaft (53) and the inner wall of the presser foot holding cylinder (51).

3. The anti-leakage oil pressing device according to claim 1, characterized in that: The eccentric side guide wheel (30) comprises a screw (31) mounted on the press beam (10), a spacer sleeve (32) and an eccentric sleeve (33) are sleeved on the outer side of the screw (31), and a side roller (34) is mounted on the eccentric sleeve (33).

4. A shearing machine, characterized in that: It comprises the anti-leakage oil pressing device as described in any one of claims 1 to 3.

5. A plate pressing method comprising the plate shearing machine as claimed in claim 4, characterized in that: The steps for pressing the sheet are as follows: First, place the nickel plate / copper plate on the base platform, the hydraulic system works and discharges the pressurized oil into the upper chamber of the press cylinder (20) to push the piston rod to drive the press beam (10) to move downward, and the downward guidance is completed by the sliding of the guide rail (60) and the guide groove (11) arranged in front and behind. After the shearing action is completed, the hydraulic system works and discharges the pressurized oil into the lower chamber of the press beam return cylinder (40) to push the piston rod to drive the press beam (10) to move upward, return to the initial position, and wait for the next shearing action.

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