Metal plate traceless bending die

Abstract

The utility model discloses a metal plate traceless bending die, relates to the technical field of bending dies, and aims to solve the problems that in a traditional metal plate bending die in the prior art, lubricating oil usually needs to be smeared on the die manually, and practicability is poor. A bending groove is formed in the middle of the upper portion of the mold body, cushion grooves are formed in the mold body along the edges of the two sides of the bending groove, gaskets are arranged in the cushion grooves, and oil storage cavities are symmetrically formed in the mold body along the two sides of the bending groove correspondingly. An oil conveying hole is formed in the mold body along the upper portion of one side of the oil storage cavity and communicates with the pad groove, a first mounting plate is arranged on the lower portion of the interior of the oil storage cavity, a first piston is fixedly mounted on the upper portion of the first mounting plate, the pad comprises a rubber pad and a cloth pad, the rubber pad is arranged on the inner side of the cloth pad, and the cloth pad is fixedly mounted on the rubber pad. And the rubber pad is connected with the cloth pad in a bonding manner.

Description

Technical Field

[0001] The utility model relates to the technical field of bending dies, in particular to a sheet metal traceless bending die. Background Technique

[0002] A bending machine is a machine that can bend thin plates. With the continuous development of technology, the types of bending machines are also increasing. The oil-free bending machine is servo-driven without hydraulic oil and can be controlled through the servo bus, making it faster in terms of performance. When using a bending machine, a die is used to facilitate the bending work of thin plates;

[0003] For example, the authorized patent with the publication number CN218424956U (a sheet metal material traceless bending die): includes a die body, a bending groove is provided on the upper surface of the die body, anti-fold mark components are arranged on both sides of the bending groove, a cover is clamped at one end of the anti-fold mark component, a connection groove is provided on one side of the lower surface of the die body, a mounting block is fixedly connected to the other side of the lower surface of the die body, the mounting block includes a small round rod and a large round rod, the outer wall of the small round rod is movably connected to the outer wall of the large round rod, and an elastic cushion layer is fixedly connected to the outer wall of the large round rod;

[0004] Although the above-mentioned prior art reduces the friction between the sheet metal material and the die, greatly protects the sheet metal material, and effectively prevents the generation of fold marks, in traditional sheet metal bending dies, it is usually necessary to manually apply lubricating oil to the die, resulting in poor practicability; Therefore, there is an urgent need in the market to develop a sheet metal traceless bending die to help people solve existing problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a sheet metal traceless bending die to solve the problem of poor practicability that usually requires manual application of lubricating oil to the die in traditional sheet metal bending dies as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A sheet metal traceless bending die includes a die body. A bending groove is provided in the middle above the die body. Pad grooves are provided along the edges on both sides of the bending groove inside the die body, and gaskets are provided inside the pad grooves. Oil storage cavities are symmetrically arranged along both sides of the bending groove inside the die body. An oil delivery hole is provided above one side of the oil storage cavity inside the die body, and the oil delivery hole is communicated with the pad groove. A mounting plate one is provided below the oil storage cavity inside, and a piston one is fixedly installed above the mounting plate one.

[0007] Preferably, the gasket includes a rubber pad and a cloth pad. The rubber pad is disposed inside the cloth pad. The rubber pad is adhesively connected to the cloth pad and adhesively connected to the mold body. A through hole is provided inside the rubber pad, and the through hole corresponds to the position of the oil delivery hole.

[0008] Preferably, sliding cavities are provided below the two oil storage cavities inside the mold body. An installation plate II is provided inside the sliding cavity. A piston II is fixedly installed below the installation plate II. A transmission column is fixedly installed above the installation plate II, and the upper end of the transmission column extends into the oil storage cavity and is fixedly connected to the installation plate I.

[0009] Preferably, a delivery air duct I is provided below the two sliding cavities inside the mold body, and the two sliding cavities are both communicated with the delivery air duct I. A delivery air duct II is provided below the delivery air duct I inside the mold body, and the delivery air duct II is communicated with the delivery air duct I. One end of the delivery air duct II away from the delivery air duct I extends to the side surface of the mold body.

[0010] Preferably, an air pipe joint is threadedly installed on one side of the mold body, and the air pipe joint is communicated with the delivery air duct II. A flow guiding block is provided above the middle inside the delivery air duct I, and the flow guiding block is fixedly connected to the mold body.

[0011] Preferably, an oil injection hole is provided on one side of the oil storage cavity inside the mold body, and the oil injection hole is communicated with the oil storage cavity. One end of the oil injection hole away from the oil storage cavity extends to the side surface of the mold body. A one-way valve is provided inside the oil injection hole. A sealing bolt I is provided on one side inside the oil injection hole. An observation hole is provided above the oil storage cavity inside the mold body, and the observation hole is communicated with the oil storage cavity. One end of the observation hole away from the oil storage cavity extends to the upper end surface of the mold body. A sealing bolt II is provided above the inside of the observation hole.

[0012] Preferably, a base is provided below the mold body. Installation holes are provided inside the base. Limiting strip plates are symmetrically and fixedly installed on both sides above the base. Placement grooves are symmetrically provided on both sides of the lower end surface of the mold body, and the placement grooves correspond to the positions of the limiting strip plates.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. The utility model can store lubricating oil by arranging two symmetrical oil storage cavities inside the mold body, and a first piston is arranged below the oil storage cavity. During the use of the mold body, by driving the first piston to move upward, the space in the upper part of the oil storage cavity can be compressed, so that the lubricating oil inside the oil storage cavity can be pressed out through the oil delivery hole into the gasket. Then, the lubricating oil adsorbed in the gasket can slowly flow out under the action of gravity to the inner wall of the bending groove, realizing oiling and lubrication of the bending mold, reducing the friction between the bending mold and the thin plate during the thin plate bending process, making the bending process smoother, and reducing the generation of bending marks.

[0015] 2. The utility model arranges gaskets, and there are two gaskets, which are respectively arranged at the edges on both sides of the bending groove. When the thin plate is bent, the outer plate body of the thin plate will press on the gasket and will not directly contact the mold body, preventing indentations from being generated at the corners of the upper ends of both sides of the bending groove when contacting the thin plate, facilitating the burr-free bending work of the sheet metal and increasing the practicability.

[0016] 3. The utility model arranges a base, and two limiting strip plates are arranged on the base, and two placement grooves are arranged below the mold body. When the bending mold is used, the base can be installed on the bending machine first, and then through the cooperation of the limiting strip plates and the placement grooves, the mold body can be stably placed on the base, facilitating the limiting work of the bending mold and increasing the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a burr-free bending mold for sheet metal of the utility model;

[0018] Figure 2 is a cross-sectional view of the mold body of the utility model;

[0019] Figure 3 is an enlarged schematic diagram of part A of the utility model;

[0020] Figure 4 is an enlarged schematic diagram of part B of the utility model.

[0021] In the figure: 1. Mold body; 101. Bending groove; 102. Oil storage cavity; 103. Sliding cavity; 104. First conveying air duct; 105. Second conveying air duct; 106. Placement groove; 107. Oil injection hole; 108. Observation hole; 109. Oil delivery hole; 2. Base; 201. Installation hole; 3. Limiting strip plate; 4. Air pipe joint; 5. Gasket; 501. Rubber pad; 502. Cloth pad; 6. First mounting plate; 7. First piston; 8. Transmission column; 9. Second mounting plate; 10. Second piston; 11. Flow guiding block; 12. Check valve; 13. First sealing bolt; 14. Second sealing bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, in combination with the drawings in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a sheet metal seamless bending die, including a die body 1. A bending groove 101 is provided in the middle above the die body 1. Pad grooves are provided along the edges on both sides of the bending groove 101 inside the die body 1, and gaskets 5 are provided inside the pad grooves. Oil storage cavities 102 are symmetrically provided along both sides of the bending groove 101 inside the die body 1. An oil delivery hole 109 is provided above one side of the oil storage cavity 102 inside the die body 1, and the oil delivery hole 109 communicates with the pad groove. A first mounting plate 6 is provided below the oil storage cavity 102 inside, and a first piston 7 is fixedly mounted above the first mounting plate 6.

[0024] During use, in the process of using the die body, by driving the first piston 7 to move upward, the space in the upper part of the oil storage cavity 102 is compressed, so that the lubricating oil inside the oil storage cavity 102 can be pressed out through the oil delivery hole 109 into the gasket 5. Then, the lubricating oil adsorbed in the gasket 5 can slowly flow out to the inner wall of the bending groove 101 under the action of gravity, realizing oiling and lubrication of the bending die, which can reduce the friction between the bending die and the thin plate during the thin plate bending process, make the bending process smoother, and reduce the generation of bending marks.

[0025] Furthermore, the gasket 5 includes a rubber pad 501 and a cloth pad 502. The rubber pad 501 is arranged inside the cloth pad 502, and the rubber pad 501 is adhesively connected to the cloth pad 502. The arrangement of the cloth pad 502 can adsorb lubricating oil, so that lubricating oil can be retained inside the gasket 5, reducing the contact friction between the thin plate and the gasket 5. The rubber pad 501 is adhesively connected to the die body 1. Through holes are provided inside the rubber pad 501, and the through holes correspond to the position of the oil delivery hole 109, so that the lubricating oil output through the oil delivery hole 109 can flow into the gasket 5.

[0026] Furthermore, sliding chambers 103 are provided below the two oil storage chambers 102 inside the mold body 1. An installation plate II 9 is arranged inside the sliding chambers 103. A piston II 10 is fixedly installed below the installation plate II 9. A transmission column 8 is fixedly installed above the installation plate II 9. The upper end of the transmission column 8 extends into the oil storage chamber 102 and is fixedly connected to the installation plate I 6. A first conveying air duct 104 is arranged below the two sliding chambers 103 inside the mold body 1. Both sliding chambers 103 are communicated with the first conveying air duct 104. A second conveying air duct 105 is arranged below the first conveying air duct 104 inside the mold body 1. The second conveying air duct 105 is communicated with the first conveying air duct 104. One end of the second conveying air duct 105 far from the first conveying air duct 104 extends to the side surface of the mold body 1. Thus, by pumping air into the second conveying air duct 105 and through the conveyance of the first conveying air duct 104, the air pressure at the bottom inside the sliding chamber 103 is increased, and then the piston II 10 is pressed to drive the installation plate II 9 to move upward. Through the transmission of the transmission column 8, the installation plate I 6 drives the piston I 7 to move upward, which is beneficial to the lubrication work of the bending groove 101.

[0027] Furthermore, an air pipe joint 4 is threadedly installed on one side of the mold body 1. The air pipe joint 4 is communicated with the second conveying air duct 105. The setting of the air pipe joint 4 facilitates the connection with the output pipe end of the air pump. A flow guiding block 11 is arranged above the middle inside the first conveying air duct 104. The flow guiding block 11 is fixedly connected to the mold body 1. The flow guiding block 11 is arranged as a triangular block, which can shunt the air, reduce the air flow resistance, and increase the practicability.

[0028] Furthermore, an oil injection hole 107 is arranged on one side of the oil storage chamber 102 inside the mold body 1, which is convenient for inputting lubricating oil into the oil storage chamber 102. The oil injection hole 107 is communicated with the oil storage chamber 102. One end of the oil injection hole 107 far from the oil storage chamber 102 extends to the side surface of the mold body 1. A one-way valve 12 is arranged inside the oil injection hole 107, which can prevent the lubricating oil from flowing out backward. A sealing bolt I 13 is arranged on one side inside the oil injection hole 107. The sealing bolt I 13 is threadedly connected to the mold body 1. An observation hole 108 is arranged above the oil storage chamber 102 inside the mold body 1. The observation hole 108 is communicated with the oil storage chamber 102. One end of the observation hole 108 far from the oil storage chamber 102 extends to the upper end surface of the mold body 1. A sealing bolt II 14 is arranged above the inside of the observation hole 108. The sealing bolt II 14 is threadedly connected to the mold body 1. Thus, by opening the observation hole 108 and vertically inserting a clean straight rod, and then taking out the straight rod, by checking the position where the lubricating oil adheres to the straight rod, it is convenient to check the amount of lubricating oil inside the oil storage chamber 102, which increases the practicability.

[0029] Furthermore, a base 2 is provided below the mold body 1. An installation hole 201 is provided inside the base 2. On both sides above the base 2, limiting strip plates 3 are symmetrically and fixedly installed. On both sides of the lower end surface of the mold body 1, placement grooves 106 are symmetrically provided. The placement grooves 106 correspond to the positions of the limiting strip plates 3. When the bending mold is in use, the base 2 can be first installed on the bending machine, and then through the cooperation of the limiting strip plates 3 and the placement grooves 106, the mold body 1 can stably fall on the base 2, which is beneficial to the stability of the placement of the bending mold.

[0030] Working principle: When in use, when the bending mold is in use, through the provided gasket 5, during the bending process of the thin plate, the outer plate body of the thin plate will press on the gasket 5 and will not directly contact the mold body 1, which can prevent indentations from being generated at the upper end two-side edges and corners of the bending groove 101 in contact with the thin plate, which is beneficial to the seamless bending work of the sheet metal. And when lubrication is required in the bending groove 101, by connecting the air pipe joint 4 to the output pipe of the air pump, air can be pumped into the second conveying air duct 105, and through the conveying of the first conveying air duct 104, the air pressure at the bottom inside the sliding cavity 103 increases, thereby pressing the second piston 10 to drive the second mounting plate 9 to move upward. Through the transmission of the transmission column 8, the first mounting plate 6 drives the first piston 7 to move upward, compressing the space in the upper part of the oil storage cavity 102, so that the lubricating oil inside the oil storage cavity 102 can be pressed out through the oil delivery hole 109 into the gasket 5, and then the lubricating oil adsorbed in the gasket 5 can slowly flow out to the inner wall of the bending groove 101 under the action of gravity, realizing the oiling and lubrication of the bending mold, which can reduce the friction between the bending mold and the thin plate during the bending process of the thin plate, making the bending process smoother and reducing the generation of bending marks.

[0031] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A sheet metal seamless bending die, comprising a die body (1), characterized in that: A bending groove (101) is arranged in the middle of the upper part of the mold body (1), gasket grooves are arranged inside the mold body (1) along the edges of both sides of the bending groove (101), and gaskets (5) are arranged inside the gasket grooves, and oil storage chambers (102) are symmetrically arranged inside the mold body (1) along both sides of the bending groove (101), and an oil delivery hole (109) is arranged inside the mold body (1) along the upper part of one side of the oil storage chamber (102), and the oil delivery hole (109) is connected to the gasket groove, and a mounting plate (6) is arranged below the inside of the oil storage chamber (102), and a piston (7) is fixedly installed above the mounting plate (6).

2. A sheet metal seamless bending die according to claim 1, characterized in that: The gasket (5) comprises a rubber pad (501) and a cloth pad (502), wherein the rubber pad (501) is arranged on the inner side of the cloth pad (502), the rubber pad (501) and the cloth pad (502) are bonded and connected, the rubber pad (501) and the mold body (1) are bonded and connected, and a through hole is arranged inside the rubber pad (501), and the through hole corresponds to the position of the oil delivery hole (109).

3. The sheet metal seamless bending die according to claim 1, characterized in that: The mold body (1) is provided with sliding cavities (103) along the bottom of the two oil storage cavities (102), and the sliding cavity (103) is provided with a second mounting plate (9). A second piston (10) is fixedly installed below the second mounting plate (9), and a transmission column (8) is fixedly installed above the second mounting plate (9), and the upper end of the transmission column (8) extends into the oil storage cavity (102) and is fixedly connected to the first mounting plate (6).

4. A sheet metal seamless bending die according to claim 3, characterized in that: A conveying air channel 1 (104) is arranged inside the mold body (1) along the lower part between the two sliding cavities (103), and the two sliding cavities (103) are both connected to the conveying air channel 1 (104). A conveying air channel 2 (105) is arranged inside the mold body (1) along the lower part of the conveying air channel 1 (104), and the conveying air channel 2 (105) is connected to the conveying air channel 1 (104). The conveying air channel 2 (105) extends from one end of the conveying air channel 1 (104) to the side surface of the mold body (1).

5. The sheet metal seamless bending die according to claim 4, characterized in that: A trachea joint (4) is threadedly mounted on one side of the mold body (1), and the trachea joint (4) is connected to the second air delivery channel (105). A guide block (11) is provided above the middle of the first air delivery channel (104), and the guide block (11) is fixedly connected to the mold body (1).

6. The sheet metal seamless bending die according to claim 5, characterized in that: An oil injection hole (107) is provided inside the mold body (1) along one side of the oil storage cavity (102), and the oil injection hole (107) is connected to the oil storage cavity (102). The end of the oil injection hole (107) away from the oil storage cavity (102) extends to the side of the mold body (1). A one-way valve (12) is provided inside the oil injection hole (107). A sealing bolt 1 (13) is provided on one side of the inside of the oil injection hole (107). An observation hole (108) is provided inside the mold body (1) along the top of the oil storage cavity (102), and the observation hole (108) is connected to the oil storage cavity (102). The end of the observation hole (108) away from the oil storage cavity (102) extends to the upper end surface of the mold body (1), and a sealing bolt 2 (14) is provided above the inside of the observation hole (108).

7. The sheet metal seamless bending die according to claim 1, characterized in that: A base (2) is provided below the mold body (1), a mounting hole (201) is provided inside the base (2), limiting strips (3) are symmetrically fixedly installed on both sides above the base (2), and placement grooves (106) are symmetrically provided on both sides of the lower end surface of the mold body (1), and the placement grooves (106) and the limiting strips (3) are located in corresponding positions.

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