Metal product bending jig

Abstract

The utility model discloses a metal product bending jig, which belongs to the technical field of metal processing equipment and comprises a working table, a female die and a male die are arranged on the working table, an elastic film is mounted on the side wall of the female die, a cushion matched with the side wall of the female die is embedded on the elastic film, an oil tank is mounted on the working table, and lubricating oil is filled in the oil tank. An oil conveying pipe extending to the position between the buffering cushion and the surface of the female die is installed at the output end of the oil tank, a pressurizing mechanism matched with the oil tank is arranged on the workbench, and a collecting groove is formed in the top wall of the workbench and located below the female die. The plate drives the buffer cushion to slide along the edge of the concave part on the female die, and in the process, the friction force borne by the buffer cushion can be reduced under the action of lubricating oil, so that the buffer cushion can be protected, the abrasion degree of the buffer cushion is reduced, the service life of the buffer cushion is prolonged, and the frequency of replacing the buffer cushion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing equipment, and more specifically to a metal product bending jig. Background Art

[0002] Metal bending jigs are auxiliary tools used to bend metal sheets on bending machines. Common bending jigs include upper dies and lower dies. The upper and lower dies can be used together to perform precise bending operations on sheet metal parts. During the bending process, the metal sheet first undergoes elastic deformation under the pressure of the upper or lower die, and then enters the plastic deformation stage. At the beginning of the plastic deformation, the sheet is free to bend, and as the pressure continues to be applied, the required bending shape is completed.

[0003] Although the existing technology can bend the metal sheet, marks will appear on the back of the metal sheet. Therefore, the existing technology prevents marks from appearing on the surface of the metal sheet by laminating, but the cost of laminating is high;

[0004] The Chinese patent with authorization announcement number: CN208680249U discloses a bending jig, which can fix the position between the metal sheet to be bent and the outer punch by means of positioning holes and positioning pins provided on the upper end surface of the outer punch, in cooperation with the positioning holes on the metal sheet to be bent; since the vertical center line of the bend is parallel to the central axis of the positioning pin, and there is no material removal operation such as grooves at the bend, no marks will appear at the bend after bending.

[0005] Although the above patent can prevent marks from appearing at the bending part, the buffer pad on the groove surface will gradually wear out as the number of uses increases, so the buffer pad needs to be replaced frequently, which reduces work efficiency.

[0006] Therefore, a metal product bending jig is proposed. Utility Model Content

[0007] In view of the problems existing in the prior art, the purpose of the utility model is to provide a metal product bending jig, which can protect the buffer pad and reduce the replacement frequency.

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A metal product bending jig comprises a workbench, on which a die and a punch are arranged, an elastic membrane is installed on the side wall of the die, a buffer pad matched with the side wall of the die is embedded on the elastic membrane, an oil tank is installed on the workbench, the oil tank is filled with lubricating oil, an oil pipeline extending between the buffer pad and the surface of the die is installed on the output end of the oil tank, and a pressurizing mechanism matched with the oil tank is provided on the workbench, a collecting groove is opened on the top wall of the workbench, the collecting groove is located below the die, and a one-way valve with an output end extending into the oil tank is embedded on the bottom wall of the collecting groove, and an air blowing mechanism matched with the collecting groove is provided on the workbench, and a positioning plate is provided on the top wall of the workbench.

[0010] Under the action of the pressurizing mechanism, since the bottom end of the oil pipe is located at the inner bottom wall of the oil tank, the lubricating oil in the oil tank will be squeezed out through the oil pipe, and the lubricating oil in the oil tank flows into the gap between the buffer pad and the surface of the die, thereby reducing the friction force on the buffer pad; during the processing, the plate contacts the buffer pad, and then the telescopic rod drives the punch to apply pressure to the plate. At this time, the plate drives the buffer pad to slide along the edge of the recessed part of the die. In this process, the friction force on the buffer pad can be reduced under the action of the lubricating oil, thereby protecting the buffer pad, reducing the degree of wear of the buffer pad, extending the service life of the buffer pad, and reducing the frequency of replacement of the buffer pad.

[0011] Furthermore, the blowing mechanism can make the groove surface on the die be impacted by the downward airflow, thereby increasing the speed at which the lubricating oil on the die surface flows downward, thereby reducing the amount of lubricating oil adhering to the surface of the sheet, and under the action of the one-way valve, the lubricating oil in the collecting tank gradually flows back to the oil tank, thereby saving the lubricating oil.

[0012] Furthermore, a mounting groove is provided on the positioning plate, an elastic block is installed in the mounting groove, a baffle is installed on the elastic block, and the baffle cooperates with the positioning plate.

[0013] Furthermore, the pressurizing mechanism includes a cavity opened on the elastic block, an intake valve and an exhaust valve are installed on the side wall of the cavity, and an output end of the exhaust valve extends into the oil tank.

[0014] First, place the plate to be processed on the top wall of the workbench, and then push the plate. At this time, the plate exerts impact force on the baffle, and the impact force can be absorbed by the deformation of the elastic block, thereby preventing the plate from being damaged by the reaction force. When the plate contacts the baffle, continue to push the plate. At this time, the plate continues to push the baffle to move, and the elastic block is squeezed. When the baffle contacts the positioning plate, the elastic block remains squeezed, and the gas in the cavity flows into the oil tank through the exhaust valve, thereby increasing the pressure in the oil tank, thereby pressurizing the oil tank. At the same time, the elastic block can absorb the impact force and protect the plate.

[0015] Furthermore, the blowing mechanism comprises a pressure relief valve inserted on the side wall of the oil tank, and an air pipe extending to the surface of the die is installed on the output end of the pressure relief valve.

[0016] By setting a pressure relief valve, the oil tank can be depressurized, thereby reducing the oil discharge volume of the oil tank, and the gas discharged through the pressure relief valve and the air pipe can impact the surface of the die, so that the lubricating oil exposed on the surface of the die is subjected to a downward impact force, which speeds up the rate at which the lubricating oil flows downward and reduces the probability of the lubricating oil adhering to the surface of the sheet.

[0017] Furthermore, the elastic coefficient of the elastic film is smaller than the elastic coefficient of the buffer pad.

[0018] Since the elastic coefficient of the elastic membrane is small, the elastic membrane can deform when the plate drives the buffer pad to move, thereby reducing the probability of the buffer pad being stretched and thinned, improving the protective effect of the buffer pad, and under the action of the elastic membrane, the buffer pad can be driven to reset, thereby ensuring that the device can continue to work.

[0019] Furthermore, an anti-slip pattern is provided on the side wall of the buffer pad away from the concave mold.

[0020] The anti-slip grooves are provided to increase the friction between the buffer pad and the plate, thereby ensuring that the plate can drive the buffer pad to move during the bending process of the plate, thereby improving the protection effect of the plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] This solution provides an elastic pad and an oil tank; the plate drives the buffer pad to slide along the edge of the recessed portion of the die. During this process, the friction force on the buffer pad can be reduced under the action of the lubricating oil, thereby protecting the buffer pad, reducing the degree of wear of the buffer pad, extending the service life of the buffer pad, and reducing the frequency of replacing the buffer pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a cross-sectional view of the concave mold of the utility model;

[0025] Figure 3 It is a combined cross-sectional view of the oil tank and the workbench of the utility model;

[0026] Figure 4 It is a cross-sectional view of the elastic block of the utility model.

[0027] Description of the numbers in the figure:

[0028] 1. Workbench; 2. Concave die; 3. Punch die; 4. Elastic membrane; 5. Buffer pad; 6. Oil tank; 7. Oil pipeline; 8. Collecting tank; 9. One-way valve; 10. Positioning plate; 11. Mounting groove; 12. Elastic block; 13. Baffle; 14. Cavity; 15. Inlet valve; 16. Exhaust valve; 17. Pressure relief valve; 18. Air pipe. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0030] Embodiment 1:

[0031] See also Figures 1 to 4 A metal product bending jig comprises a workbench 1, on which a die 2 and a punch 3 are provided, an elastic membrane 4 is installed on the side wall of the die 2, a buffer pad 5 cooperating with the side wall of the die 2 is embedded in the elastic membrane 4, an oil tank 6 is installed on the workbench 1, the oil tank 6 is filled with lubricating oil, an oil delivery pipe 7 extending to between the buffer pad 5 and the surface of the die 2 is installed on the output end of the oil tank 6, and a pressurizing mechanism cooperating with the oil tank 6 is provided on the workbench 1, a collecting groove 8 is opened on the top wall of the workbench 1, the collecting groove 8 is located below the die 2, and a one-way valve 9 with an output end extending into the oil tank 6 is embedded on the bottom wall of the collecting groove 8, and a blowing mechanism cooperating with the collecting groove 8 is provided on the workbench 1, and a positioning plate 10 is provided on the top wall of the workbench 1.

[0032] Under the action of the pressurizing mechanism, since the bottom end of the oil pipe 7 is located at the inner bottom wall of the oil tank 6, the lubricating oil in the oil tank 6 will be squeezed out through the oil pipe 7, and the lubricating oil in the oil tank 6 flows into the gap between the buffer pad 5 and the surface of the die 2, thereby reducing the friction force on the buffer pad 5; during the processing, the plate contacts the buffer pad 5, and then the telescopic rod drives the punch 3 to apply pressure to the plate. At this time, the plate drives the buffer pad 5 to slide along the edge of the recessed part on the die 2. In this process, the friction force on the buffer pad 5 can be reduced under the action of the lubricating oil, thereby protecting the buffer pad 5, reducing the degree of wear of the buffer pad 5, extending the service life of the buffer pad 5, and reducing the frequency of replacing the buffer pad 5.

[0033] Furthermore, the blowing mechanism can make the groove surface on the die 2 impacted by the downward airflow, thereby increasing the speed at which the lubricating oil on the surface of the die 2 flows downward, thereby reducing the amount of lubricating oil adhering to the surface of the sheet, and under the action of the one-way valve 9, the lubricating oil in the collecting tank 8 gradually flows back to the oil tank 6, thereby saving the lubricating oil.

[0034] like Figure 1 , Figure 4 As shown, a mounting groove 11 is provided on the positioning plate 10 , an elastic block 12 is installed in the mounting groove 11 , a baffle 13 is installed on the elastic block 12 , and the baffle 13 cooperates with the positioning plate 10 .

[0035] The pressurizing mechanism includes a cavity 14 opened on the elastic block 12 , an intake valve 15 and an exhaust valve 16 are installed on the side wall of the cavity 14 , and an output end of the exhaust valve 16 extends into the oil tank 6 .

[0036] First, place the plate to be processed on the top wall of the workbench 1, and then push the plate. At this time, the plate applies impact force to the baffle 13. The deformation of the elastic block 12 can absorb the impact force, thereby preventing the plate from being damaged by the reaction force. After the plate contacts the baffle 13, continue to push the plate. At this time, the plate continues to push the baffle 13 to move, and the elastic block 12 is squeezed. When the baffle 13 contacts the positioning plate 10, the elastic block 12 remains squeezed, and the gas in the cavity 14 flows into the oil tank 6 through the exhaust valve 16, thereby increasing the pressure in the oil tank 6, thereby playing a role in pressurizing the oil tank 6. At the same time, the elastic block 12 can absorb the impact force and play a role in protecting the plate.

[0037] And under the action of the intake valve 15, the elastic block 12 can be restored normally.

[0038] like Figure 3 As shown, the blowing mechanism includes a pressure relief valve 17 inserted on the side wall of the oil tank 6, and an air pipe 18 extending to the surface of the die 2 is installed on the output end of the pressure relief valve 17.

[0039] By setting the pressure relief valve 17, the oil tank 6 can be depressurized, thereby reducing the oil discharge volume of the oil tank 6, and the gas discharged through the pressure relief valve 17 and the air pipe 18 can impact the surface of the die 2, so that the lubricating oil exposed on the surface of the die 2 is subjected to a downward impact force, which accelerates the rate at which the lubricating oil flows downward and reduces the probability of the lubricating oil adhering to the surface of the plate.

[0040] like Figure 1 As shown, the elastic coefficient of the elastic membrane 4 is smaller than the elastic coefficient of the buffer pad 5 .

[0041] Since the elastic coefficient of the elastic membrane 4 is small, the elastic membrane 4 can deform when the plate drives the buffer pad 5 to move, thereby reducing the probability of the buffer pad 5 being stretched and thinned, improving the protection effect of the buffer pad 5, and under the action of the elastic membrane 4, the buffer pad 5 can be driven to reset, thereby ensuring that the device can continue to work.

[0042] like Figure 1 As shown, the side wall of the buffer pad 5 away from the die 2 is provided with anti-slip grooves.

[0043] The anti-slip grooves are provided to increase the friction between the buffer pad 5 and the plate, thereby ensuring that the plate can drive the buffer pad 5 to move during the bending process of the plate, thereby improving the protection effect of the plate.

[0044] Instructions for use: Under the action of the pressurizing mechanism, since the bottom end of the oil pipe 7 is located at the inner bottom wall of the oil tank 6, the lubricating oil in the oil tank 6 will be squeezed out through the oil pipe 7, and the lubricating oil in the oil tank 6 flows into the gap between the buffer pad 5 and the surface of the die 2, thereby reducing the friction force on the buffer pad 5; during the processing, the plate contacts the buffer pad 5, and then the telescopic rod drives the punch 3 to apply pressure to the plate. At this time, the plate drives the buffer pad 5 to slide along the edge of the recessed part of the die 2. In this process, the friction force on the buffer pad 5 can be reduced under the action of the lubricating oil, thereby protecting the buffer pad 5, reducing the degree of wear of the buffer pad 5, extending the service life of the buffer pad 5, and reducing the frequency of replacing the buffer pad 5.

[0045] In addition, the blowing mechanism can make the groove surface on the die 2 be impacted by the downward airflow, thereby increasing the speed at which the lubricating oil on the surface of the die 2 flows downward, thereby reducing the amount of lubricating oil adhering to the surface of the plate, and under the action of the one-way valve 9, the lubricating oil in the collecting tank 8 gradually flows back to the oil tank 6. Since the elastic coefficient of the elastic membrane 4 is small, when the plate drives the buffer pad 5 to move, the elastic membrane 4 can be deformed, thereby reducing the probability of the buffer pad 5 being stretched and thinned, and improving the protection effect of the buffer pad 5. Under the action of the elastic membrane 4, the buffer pad 5 can be driven to reset, thereby ensuring that the device can continue to work.

[0046] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A metal product bending jig, comprising a workbench (1), wherein a concave die (2) and a convex die (3) are provided on the workbench (1), characterized in that: An elastic membrane (4) is installed on the side wall of the die (2), and a buffer pad (5) is embedded in the elastic membrane (4) and matches the side wall of the die (2). An oil tank (6) is installed on the workbench (1), and the oil tank (6) is filled with lubricating oil. An oil delivery pipe (7) extending between the buffer pad (5) and the surface of the die (2) is installed on the output end of the oil tank (6), and a pressurizing mechanism matching the oil tank (6) is provided on the workbench (1). A collecting groove (8) is opened on the top wall of the workbench (1), and the collecting groove (8) is located below the die (2). A one-way valve (9) whose output end extends into the oil tank (6) is embedded on the bottom wall of the collecting groove (8), and an air blowing mechanism matching the collecting groove (8) is provided on the workbench (1), and a positioning plate (10) is provided on the top wall of the workbench (1).

2. A metal product bending jig according to claim 1, characterized in that: The positioning plate (10) is provided with a mounting groove (11), an elastic block (12) is installed in the mounting groove (11), a baffle (13) is installed on the elastic block (12), and the baffle (13) cooperates with the positioning plate (10).

3. A metal product bending jig according to claim 2, characterized in that: The pressurizing mechanism comprises a cavity (14) formed on an elastic block (12); an intake valve (15) and an exhaust valve (16) are mounted on the side wall of the cavity (14); and an output end of the exhaust valve (16) extends into the oil tank (6).

4. A metal product bending jig according to claim 3, characterized in that: The blowing mechanism comprises a pressure relief valve (17) inserted on the side wall of the oil tank (6), and an air pipe (18) extending to the surface of the concave mold (2) is installed on the output end of the pressure relief valve (17).

5. The metal product bending jig according to claim 4, characterized in that: The elastic coefficient of the elastic film (4) is smaller than the elastic coefficient of the buffer pad (5).

6. The metal product bending jig according to claim 5, characterized in that: The side wall of the buffer pad (5) away from the die (2) is provided with anti-slip grooves.

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