Three-cylinder hydraulic plate bending machine with clamping and feeding functions

Abstract

The utility model relates to the technical field of hydraulic bending machines, in particular to a three-cylinder hydraulic plate bending machine with clamping and feeding functions, which comprises a machine frame, a working table is arranged below the machine frame, a bending area is arranged inside the working table, a lower die is arranged above the bending area, and an upper die is arranged above the lower die. A hydraulic oil tank is arranged in the rack, an oil supply pipe is connected to the lower portion of the hydraulic oil tank, a four-way joint is installed at the tail end, away from the hydraulic oil tank, of the oil supply pipe, and three connectors of the four-way joint are all connected with oil way connecting pipes. According to the utility model, the three groups of oil cylinders are arranged on the lower pressing plate, and hydraulic oil in the hydraulic oil tank can simultaneously push the telescopic ends of the three groups of oil cylinders to stretch out and draw back after entering the oil cylinders, so that the upper die is driven to move up and down through the lower pressing plate, and the pressure of the upper die is consistent during hydraulic pressure; the problem that the bending effect of the plate is affected due to the fact that the pressure in the middle of the plate is large and the pressure on the two sides is small when a single hydraulic cylinder is used is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic bending machines, in particular to a three-cylinder hydraulic plate bending machine with a clamping and feeding function. Background Art

[0002] Stainless steel sheets refer to steel plates that are resistant to corrosion by weak media such as the atmosphere, steam and water. When stainless steel sheets are processed, they are bent by a bending machine to form a bending groove of a certain shape. The hydraulic sheet bending machine drives the upper die to move downward through the hydraulic mechanism, and the pressure head approaches the sheet and cooperates with the lower membrane to achieve the bending of the sheet.

[0003] The patent specification with announcement number CN217290143U discloses a bending machine with clamping and feeding functions, including a base, support legs symmetrically arranged on the lower surface of the base, a gantry fixedly connected to the upper surface of the base, a first hydraulic cylinder fixedly connected to the lower surface of the gantry, and a pressure head fixedly connected to the movable end of the first hydraulic cylinder. The utility model solves the problem that the existing bending machine is manually fed and does not have the performance of automatic feeding to a certain extent by arranging a clamping component and a feeding component.

[0004] However, in the implementation of relevant technologies, it was found that the above-designed bending machine with a clamping and feeding function has the following problems: the bending machine frame has a group of hydraulic cylinders to drive the pressure head to descend and bend the sheet material, but when bending wider sheets, the use of a group of hydraulic cylinders will cause the pressure in the middle of the sheet material to be greater, while the pressure on both sides is smaller, affecting the bending effect of the sheet material. In view of this, a three-cylinder hydraulic sheet metal bending machine with a clamping and feeding function is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a three-cylinder hydraulic plate bending machine with a clamping and feeding function.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a three-cylinder hydraulic sheet metal bending machine with a clamping and feeding function, comprising a frame, a workbench is arranged below the frame, and a bending area is opened inside the workbench, a lower die is installed above the bending area, and an upper die is arranged above the lower die, and the upper die can move downward after being driven by a hydraulic mechanism, and cooperate with the lower die to realize the bending of the sheet metal, a hydraulic oil tank is arranged inside the frame, and an oil supply pipe is connected below the hydraulic oil tank, a four-way is installed at the end of the oil supply pipe away from the hydraulic oil tank, and the three-way connection of the four-way The ports are all connected with an oil circuit connecting pipe, the end of the oil circuit connecting pipe is connected with an oil cylinder, and a lower pressure plate is installed at the telescopic end of the oil cylinder, the upper mold is fixed under the lower pressure plate, and a guide slider is arranged at the connection between the lower pressure plate and the frame. The three groups of oil cylinders can be supplied with oil through the hydraulic oil tank. After the hydraulic oil enters the oil cylinder, the telescopic end of the oil cylinder can be pushed to extend and retract, thereby driving the upper mold to move up and down through the lower pressure plate, and the setting of the three groups of oil cylinders can make the pressure of the upper mold consistent during hydraulic pressure, thereby avoiding the problem of high pressure in the middle of the sheet and low pressure on both sides caused by the use of a single group of hydraulic cylinders, which affects the bending effect of the sheet.

[0007] As a further description of the above technical solution: a number of equidistant and evenly distributed water spray heads are arranged on the front and rear sides of the upper mold, and the water inlet end of the water spray head is connected to a water supply pipe, the water inlet end of the water supply pipe is connected to a cooling water tank, and the cooling water tank is located on one side of the hydraulic oil tank. Water can be sprayed onto the upper mold through the arranged water spray heads to cool down the sheet material between the upper mold and the lower mold.

[0008] As a further description of the above technical solution: a filter plate is installed inside the cooling water tank, and a circulation pipe is connected to one end of the cooling water tank, and a cooling pipe is installed at the end of the circulation pipe away from the cooling water tank, and used water can re-enter the cooling water tank through the circulation pipe for recycling.

[0009] As a further description of the above technical solution: a water storage tank is arranged below the bending area, and a second filter plate is arranged inside the water storage tank. The water storage tank can store the sprayed water and filter the cooling water through the second filter plate.

[0010] As a further description of the above technical solution: the cooling pipes are arranged in a serpentine shape under the water storage tank, and heat dissipation holes are opened on the back of the rack. External air can enter the rack through the heat dissipation holes, which is convenient for cooling the cooling pipes in the rack. Water can be cooled when passing through the cooling pipes.

[0011] As a further description of the above technical solution: the cooling water tank is interconnected with the water storage tank through a circulation pipe and a cooling pipe, and the cooling water tank is interconnected with the sprinkler head through a water supply pipe. The cooling water tank re-cools the filtered water through the circulation pipe and the cooling pipe for recycling, saving water resources.

[0012] As a further description of the above technical solution: a liftable pressing plate is arranged parallel to the top of the workbench, and a roller is installed on the bottom end face of the pressing plate. A clamping cylinder is arranged on the top of the pressing plate, which can push the pressing plate to descend and clamp the sheet placed under the pressing plate. Since the roller is arranged on the bottom end face of the pressing plate, the roller can roll on the surface of the sheet. At this time, a pushing cylinder with a telescopic end facing the rear side can be installed at the front end of the pressing plate. The telescopic end of the pushing cylinder can push the sheet between the pressing plate and the workbench to move backward, thereby realizing the clamping and feeding operation of the sheet.

[0013] The utility model has the following beneficial effects:

[0014] The utility model designs a three-cylinder hydraulic sheet metal bending machine with a clamping and feeding function. By arranging three groups of oil cylinders on a lower pressure plate, the hydraulic oil in the hydraulic oil tank can simultaneously push the telescopic ends of the three groups of oil cylinders to extend and retract after entering the oil cylinders, thereby driving the upper die to move up and down through the lower pressure plate, so that the pressure of the upper die is consistent during hydraulic pressure, avoiding the problem of high pressure in the middle of the sheet metal and low pressure on both sides caused by the use of a single group of hydraulic cylinders, which affects the bending effect of the sheet metal.

[0015] The utility model designs a three-cylinder hydraulic sheet metal bending machine with a clamping and feeding function. Water can be sprayed onto an upper die through a water spray head to cool down the sheet metal between the upper die and the lower die. The sprayed water can be stored in a water storage tank, and the cooling water is filtered through a filter plate. The water is re-cooled and filtered through a circulation pipe and a cooling pipe, and then discharged into a cooling water tank for recycling, thereby saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the installation structure of the oil cylinder of the utility model;

[0018] Figure 3 It is a schematic diagram of the partial structure of the back side of the frame of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the water storage tank of the utility model.

[0020] Legend:

[0021] 1. Frame; 2. Lower pressure plate; 3. Bending area; 4. Pressing plate; 5. Cross; 6. Water supply pipe; 7. Oil connecting pipe; 8. Oil cylinder; 9. Guide slide; 10. Upper die; 11. Sprinkler head; 12. Oil supply pipe; 13. Hydraulic oil tank; 14. Cooling water tank; 15. Filter plate 1; 16. Circulation pipe; 17. Filter plate 2; 18. Heat dissipation holes; 19. Cooling pipe; 20. Water storage tank. DETAILED DESCRIPTION

[0022] Reference Figure 1-4 The utility model provides a three-cylinder hydraulic sheet metal bending machine with a clamping and feeding function: it includes a frame 1, a workbench is arranged below the frame 1, and a bending area 3 is opened inside the workbench, a lower die is installed above the bending area 3, and an upper die 10 is arranged above the lower die, and the upper die 10 can move downward after being driven by a hydraulic mechanism, and cooperate with the lower die to realize the bending of the sheet metal, a hydraulic oil tank 13 is arranged inside the frame 1, and an oil supply pipe 12 is connected to the lower side of the hydraulic oil tank 13, and a cross-connect 5 is installed at the end of the oil supply pipe 12 away from the hydraulic oil tank 13, and the three-way interfaces of the cross-connect 5 are all connected to the oil circuit connection Tube 7, the end of the oil circuit connecting tube 7 is connected to the oil cylinder 8, and the telescopic end of the oil cylinder 8 is installed with the lower pressure plate 2, the upper mold 10 is fixed under the lower pressure plate 2, and a guide slider 9 is arranged at the connection between the lower pressure plate 2 and the frame 1. The three groups of oil cylinders 8 can be supplied with oil through the hydraulic oil tank 13. After the hydraulic oil enters the oil cylinder 8, it can push the telescopic end of the oil cylinder 8 to extend and retract, thereby driving the upper mold 10 to move up and down through the lower pressure plate 2. In addition, the setting of the three groups of oil cylinders 8 can make the pressure of the upper mold 10 consistent during hydraulic pressure, thereby avoiding the problem that the pressure in the middle of the sheet metal is higher and the pressure on both sides is lower due to the use of a single group of hydraulic cylinders, which affects the bending effect of the sheet metal.

[0023] As a further implementation scheme of the above technical scheme: a number of equidistant and evenly distributed water spray heads 11 are arranged on the front and rear sides of the upper mold 10, and the water inlet end of the water spray head 11 is connected to the water supply pipe 6, and the water inlet end of the water supply pipe 6 is connected to the cooling water tank 14, and the cooling water tank 14 is located on one side of the hydraulic oil tank 13. Water can be sprayed onto the upper mold 10 through the arranged water spray heads 11 to cool down the sheet material between the upper mold 10 and the lower mold.

[0024] As a further implementation scheme of the above technical scheme: a filter plate 15 is installed inside the cooling water tank 14, and one end of the cooling water tank 14 is connected to a circulation pipe 16, and a cooling pipe 19 is installed at the end of the circulation pipe 16 away from the cooling water tank 14, and used water can re-enter the cooling water tank 14 through the circulation pipe 16 for recycling.

[0025] As a further implementation scheme of the above technical scheme: a water storage tank 20 is arranged below the bending area 3, and a filter plate 17 is arranged inside the water storage tank 20. The water storage tank 20 can store the sprayed water and filter the cooling water through the filter plate 17.

[0026] As a further implementation scheme of the above technical scheme: the cooling pipes 19 are arranged in a serpentine shape below the water storage tank 20, and a heat dissipation hole 18 is opened on the back of the rack 1, and the external air can enter the rack 1 through the heat dissipation hole 18, so as to facilitate cooling of the cooling pipes 19 in the rack 1, and the water can be cooled when passing through the cooling pipes 19.

[0027] As a further implementation scheme of the above technical scheme: the cooling water tank 14 is interconnected with the water storage tank 20 through the circulation pipe 16 and the cooling pipe 19, and the cooling water tank 14 is interconnected with the sprinkler head 11 through the water supply pipe 6. The cooling water tank 14 re-cools the filtered water through the circulation pipe 16 and the cooling pipe 19 for recycling, saving water resources.

[0028] As a further implementation scheme of the above technical scheme: a liftable pressing plate 4 is arranged parallel to the top of the workbench, and a roller is installed on the bottom end face of the pressing plate 4. A clamping cylinder is arranged on the top of the pressing plate 4, which can push the pressing plate 4 to descend and clamp the sheet placed under the pressing plate 4. Since the roller is arranged on the bottom end face of the pressing plate 4, the roller can roll on the surface of the sheet. At this time, a pushing cylinder with a telescopic end facing the rear side can be installed at the front end of the pressing plate 4. The telescopic end of the pushing cylinder can push the sheet located between the pressing plate 4 and the workbench to move backward, thereby realizing the clamping and feeding operation of the sheet.

[0029] During the specific implementation, the oil pump installed in the hydraulic oil tank 13 is started, and the oil pump supplies the hydraulic oil to the oil cylinder 8 through the oil supply pipe 12, the four-way 5 and the oil circuit connecting pipe 7 in turn, which can simultaneously push the telescopic ends of the three groups of oil cylinders 8 to extend and retract, thereby driving the upper mold 10 to move up and down through the lower pressure plate 2, so that the pressure of the upper mold 10 is consistent during hydraulic pressure, avoiding the problem of high pressure in the middle of the sheet and low pressure on both sides caused by the use of a single group of hydraulic cylinders, which affects the bending effect of the sheet. While bending, the water spray head 11 can spray water onto the upper mold 10 to cool the sheet between the upper mold 10 and the lower mold, and the sprayed water can be filtered through the filter plate 17 and then enter the water storage tank 20 for storage. A water pump is installed on the cooling pipe 19. After the water pump is started, the water in the water storage tank 20 is re-cooled and filtered through the circulation pipe 16 and the cooling pipe 19 and then discharged into the cooling water tank 14 for recycling, saving water resources.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A three-cylinder hydraulic sheet metal bending machine with a clamping and feeding function, comprising a frame (1), a workbench is arranged below the frame (1), a bending area (3) is opened inside the workbench, a lower die is installed above the bending area (3), and an upper die (10) is arranged above the lower die, characterized in that: A hydraulic oil tank (13) is arranged inside the frame (1), and an oil supply pipe (12) is connected below the hydraulic oil tank (13); a four-way (5) is installed at the end of the oil supply pipe (12) away from the hydraulic oil tank (13), and the three-way interfaces of the four-way (5) are all connected to an oil circuit connecting pipe (7); the end of the oil circuit connecting pipe (7) is connected to an oil cylinder (8), and a lower pressing plate (2) is installed at the telescopic end of the oil cylinder (8); the upper mold is fixed below the lower pressing plate (2), and a guide slider (9) is provided at the connection between the lower pressing plate (2) and the frame (1).

2. A three-cylinder hydraulic sheet metal bending machine with clamping and feeding function according to claim 1, characterized in that: A plurality of equidistantly evenly distributed water spray heads (11) are provided on both the front and rear sides of the upper mold (10), and the water inlet end of the water spray head (11) is connected to a water supply pipe (6), and the water inlet end of the water supply pipe (6) is connected to a cooling water tank (14), and the cooling water tank (14) is located on one side of the hydraulic oil tank (13).

3. A three-cylinder hydraulic sheet metal bending machine with clamping and feeding function according to claim 2, characterized in that: A filter plate (15) is installed inside the cooling water tank (14), and one end of the cooling water tank (14) is connected to a circulation pipe (16), and a cooling pipe (19) is installed at one end of the circulation pipe (16) away from the cooling water tank (14).

4. The three-cylinder hydraulic sheet metal bending machine with clamping and feeding function according to claim 3 is characterized in that: A water storage tank (20) is arranged below the bending area (3), and a second filter plate (17) is arranged inside the water storage tank (20).

5. The three-cylinder hydraulic sheet metal bending machine with clamping and feeding function according to claim 4 is characterized in that: The cooling pipes (19) are arranged in a serpentine shape below the water storage tank (20), and a heat dissipation hole (18) is provided on the back of the frame (1).

6. A three-cylinder hydraulic sheet metal bending machine with clamping and feeding function according to claim 5, characterized in that: The cooling water tank (14) is interconnected with the water storage tank (20) through the circulation pipe (16) and the cooling pipe (19), and the cooling water tank (14) is interconnected with the water spray head (11) through the water supply pipe (6).

7. The three-cylinder hydraulic sheet metal bending machine with clamping and feeding function according to claim 1 is characterized in that: A lifting and lowering pressing plate (4) is arranged in parallel on the top of the workbench, and a roller is installed on the bottom end surface of the pressing plate (4).

Images