Mould oil coating device, mould and automatic oil coating method

Abstract

The invention belongs to the technical field of mold machining, and discloses an oil coating device of a mold, the mold and an automatic oil coating method.The oil coating device comprises an oil storage bin arranged on the mold; the oil leakage opening is formed in the lower part of the oil storage bin; and the oil leakage port is used for automatically oiling the plate in the mold closing process of the mold. According to the automatic oiling device, the gap between the oil plug and the oil leakage opening is gradually increased along with stress movement of the oil plug, lubricating oil flows out through the gap under the action of gravity and drips onto a machining part needing to be lubricated, the automatic oiling process of the machining part coated with oil can be effectively achieved, the product quality is remarkably improved, and then the production cost of products is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of mold processing, and specifically relates to an oiling device for a mold, a mold, and an automatic oiling method. Background Art

[0002] With the rapid development of the household appliance industry, refrigerators, as indispensable household appliances in modern families, their appearance design and manufacturing quality are increasingly valued by consumers. As an important part of the refrigerator's appearance, the refrigerator door shell not only requires good structural strength and durability but also a delicate appearance to attract consumers.

[0003] However, in the production process of the refrigerator door shell, especially when it comes to the formation of the folded U structure, there is often a technical problem. That is, due to the high hardness of the mold and the sheet material, the phenomenon of "hard hitting hard" is likely to occur during the bending process, which in turn leads to the damage of the film on the surface of the door shell or the scratching of the spray coating.

[0004] To address this problem, lubricating oil is often applied between the mold and the sheet material to increase lubrication and reduce the damage caused by direct contact. However, this method has obvious limitations. On the one hand, if manual oiling is used, not only is the efficiency low, but it is also difficult to ensure the uniformity of oiling, which in turn affects the overall quality of the product. On the other hand, uneven oiling may also introduce new pollution problems, having an adverse impact on the production environment and product hygiene.

[0005] In summary, in the existing door shell processing, there is a risk of film damage or spray coating scratching on the shell, resulting in low product quality during the formation of the folded U structure of the refrigerator door shell, which not only causes high production costs but also insufficient product competitiveness.

[0006] In view of this, the present invention is specifically proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an oiling device that can automatically oil the processing parts that need to be oiled.

[0008] To solve the above technical problem, the basic concept of the technical solution adopted by the present invention is: An oiling device for a mold, comprising: An oil storage bin, provided on the mold; An oil leakage port, provided at the lower part of the oil storage bin; The oil leakage port automatically oils the sheet material during the mold closing process.

[0009] Furthermore, it further includes An upper folding knife, provided on the upper mold of the mold, The oil storage bin is arranged on the upper folding knife; An oil plug is movably arranged in the oil leakage port to enable the oil leakage port to leak oil and be blocked.

[0010] Furthermore, it further includes An oil outlet channel, which is respectively communicated with the oil leakage port of the oil storage bin, and the oil plug is movably arranged in the oil outlet channel.

[0011] Furthermore, it further includes An elastic component, which is arranged in the oil outlet channel, with one end connected to the oil plug and the other end connected to the inner wall of the oil outlet channel; Preferably, the elastic component is a return spring.

[0012] Furthermore, a cavity is provided on the upper folding knife, and the cavity forms the oil storage bin, or the oil storage bin is an independent component arranged in the cavity.

[0013] According to another object of the present invention, a mold is further provided, including An upper mold, which is provided with the oiling device described in any one of the above; A lower mold, which is oppositely arranged with the upper mold and is used for carrying the plate to be processed; The oiling device is oppositely arranged with the bending surface of the plate; During the mold closing process of the mold, the oil plug is triggered to make the oiling device leak oil to the plate.

[0014] Furthermore, during the mold closing process, the oil plug touches the plate and is stressed, making the oiling device leak oil to the plate; During the mold closing process, the plate is bent, and the oil plug rebounds and resets to block the oiling device.

[0015] Furthermore, the oil leakage port is arranged on the upper folding knife corresponding to the bending position of the plate.

[0016] Furthermore, the lower mold has: A lower slide block inserting knife, which is movably arranged on one side of the lower mold; A cushion block, which is movably arranged with the lower slide block inserting knife on one side of the bending position of the plate; The upper mold has: An upper slide block inserting knife, which is arranged corresponding to the lower slide block inserting knife and pushes the lower slide block inserting knife to move; An upper stripping plate, which is arranged on one side of the oiling device and is oppositely arranged with the plate; An upper folding knife, which is oppositely arranged with the bending surface of the plate.

[0017] According to another object of the present invention, an automatic oiling method is further provided, which is applied to the mold described above and includes: S1. The upper die and the lower die move relative to each other; S2. The oil plug contacts the sheet material, and there is oil leakage through the gap formed between the oil plug and the oil leakage port; S3. During the process that the upper die and the lower die close to bend the sheet material, the oil plug resets to block the oil leakage port; Preferably, when performing S1, it further includes: S11. The lower die moves to a position where the inserting knife of the lower sliding seat of the lower die moves into the straight body surface of the inserting knife of the upper sliding seat of the upper die; When performing S2, it further includes: S21. The upper die descends to a position where the upper stripping plate of the upper die contacts the sheet material; More preferably, when performing S3, it further includes: S31. The upper folding knife of the upper die presses the bending part of the sheet material, and there is oil leakage through the gap formed between the oil plug and the oil leakage port; During the process that the upper folding knife bends the sheet material, the oil plug resets to block the oil leakage port.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: In the present invention, as the oil plug moves under force, the gap between the oil plug and the oil leakage port gradually increases, and the lubricating oil flows out through the gap under the action of gravity and drips onto the components that need to be lubricated. This oiling device has a simple structure and convenient operation, and can effectively perform automatic oiling on the processing components that need to be oiled.

[0019] In the present invention, the oiling operation is automatically realized through the movement of the upper die without manual intervention, which improves the production efficiency and automation degree. The oil leakage method through the gap generated when the oil plug contacts the sheet material can ensure that the lubricating oil is evenly applied on the surface of the sheet material and improve the oiling quality. The oiling device is integrated on the upper die without occupying extra space, making the entire die system have a compact structure and convenient operation.

[0020] In the present invention, by precisely controlling the movement of the upper die and the lower die and the state change of the oil plug in the oiling device, the accuracy and stability of sheet material processing are ensured.

[0021] The following further describes in detail the specific embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0022] The accompanying drawings, as a part of the present invention, are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation to the present invention. Obviously, the accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings: Figure 1 is a schematic structural diagram of the oiling device in the present invention; Figure 2 is the processing schematic of the mold in the present invention Figure 1 ; Figure 3 is the processing schematic of the mold in the present invention Figure 2 ; Figure 4 is the processing schematic of the mold in the present invention Figure 3 ; Figure 5 is the processing schematic of the mold in the present invention Figure 4 ; Figure 6 is the processing schematic of the mold in the present invention Figure 5 ; Figure 7 is the process schematic of the automatic oiling method in the present invention Figure 1 ; Figure 8 is the process schematic of the automatic oiling method in the present invention Figure 2 。

[0023] In the figure: 1, oil storage bin; 2, oil leakage port; 21, oil outlet channel; 3, oil plug; 4, elastic component; 5, oil injection channel; 10, oiling device; 51, oil injection port; 6, upper mold; 61, upper stripping plate; 62, upper folding knife; 63, upper slide seat insert knife; 7, lower mold; 71, lower slide seat insert knife; 72, nitrogen spring; 73, cushion block; 8, plate.

[0024] It should be noted that these accompanying drawings and text descriptions are not intended to limit the scope of the concept of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0026] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 should not be construed as a limitation to the present invention.

[0027] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] Embodiment 1 To solve the above problems, as Figure 1 shown, this embodiment provides an oiling device for a mold, including: An upper folding knife 62, which is arranged on the upper mold 6 of the mold, and there is an oil storage bin 1 at the upper end; An oil leakage port 2, which is arranged below the oil storage bin 1; An oil plug 3, which plugs the oil leakage port 2; The oil plug 3 moves under force, creating a gap with the oil leakage port 2 for oil leakage.

[0029] In this embodiment, the oiling device is used to automatically apply lubricating oil to the processed parts. By using the lubricating effect of the oil, it can effectively reduce the risk of film damage or spray coating scratches on processed parts such as door shells, and improve the quality of products that require bending structures such as door shells.

[0030] In this embodiment, the oiling device mainly includes components such as an upper folding knife 62, an oil storage bin 1, an oil leakage port 2, and an oil plug 3. The oil storage bin 1 can be made of stainless steel, with good corrosion resistance and sealing performance to ensure that the stored lubricating oil will not deteriorate due to the external environment. A liquid level sensor is provided in the oil storage bin 1 to monitor the remaining amount of the lubricating oil in real time. When the oil volume is lower than the preset threshold, it can automatically add lubricating oil or remind the user to add it manually.

[0031] Furthermore, the oil leakage port 2 is arranged at the bottom of the oil storage bin 1. The oil leakage port 2 can adopt a conical design to ensure the sealing performance and the accuracy of gap adjustment with the oil plug 3.

[0032] Furthermore, the oil plug 3 is made of hard alloy that matches the material of the oil leakage port 2, and has high strength and good wear resistance. The oil plug 3 is provided with a pattern that matches the oil leakage port 2, which can enhance the close connection or separation with the oil leakage port 2.

[0033] In the above scheme, when the oiling device is working, as the oil plug 3 is moved by force, the gap between the oil plug 3 and the oil leakage port 2 gradually increases, and the lubricating oil flows out through the gap under the action of gravity and drips onto the parts that need lubrication. The oil plug 3 can be moved by a mechanical device or motor control. The oiling device has a simple structure and is easy to operate. It can effectively realize the automatic oiling of the processed parts that need oiling, and effectively reduce the risk of damage to the coating of the processed parts such as the door shell or scratches on the spray layer by the lubricating effect of the oil, significantly improve the product quality in the process of forming the U-shaped structure of the refrigerator door shell, and reduce the production cost of the product.

[0034] Embodiment 2 This embodiment is a further description of the above embodiment 1.

[0035] like Figure 1 As shown, in this embodiment, the oil storage tank 1 of the oiling device is a chamber formed inside the upper folding knife 62 itself, or the oil storage tank 1 is a device arranged inside the upper folding knife 62.

[0036] Specifically, a concave cavity is provided on the inner side of the upper end of the upper folding knife 62, and the concave cavity constitutes an oil storage bin 1. The upper folding knife 62 is made of a corrosion-resistant and sealing material such as stainless steel or hard alloy. In another embodiment, the oil storage bin 1 is a separate device, which is arranged in the concave cavity of the upper folding knife 62. The upper folding knife 62 is arranged together with the oil storage bin 1 to achieve automatic oiling during the mold closing process.

[0037] Furthermore, the oiling device has an oil outlet passage 21 connected to the oil storage tank 1 , and the oil leakage port 2 is arranged at an end of the oil outlet passage 21 away from the oil storage tank 1 .

[0038] Specifically, the oil outlet channel 21 is a pipe connecting the oil storage tank 1 and the oil leakage port 2, and is used to guide the lubricating oil in the oil storage tank 1 to the oil leakage port 2. The oil outlet channel 21 adopts a smooth inner wall design to reduce the resistance of the lubricating oil when flowing, ensuring unimpeded oil flow.

[0039] Furthermore, one end of the oil plug 3 is arranged in the oil leakage port 2 , and the other end extends into the oil outlet channel 21 .

[0040] Specifically, part of the oil plug 3 is arranged in the oil leakage port 2, and the other end extends into the oil outlet channel 21 for a certain distance. One end of the oil plug 3 passes through the upper folding knife 62, so that the oil plug 3 can move axially along the oil outlet channel 21 when subjected to external force, thereby changing the size of the gap between the oil plug 3 and the oil leakage port 2.

[0041] With such a setting, by using the structural design of the oil outlet channel 21 and the oil leakage port 2, combined with the movement control of the oil plug 3, the precise application of lubricating oil is achieved, improving the accuracy and efficiency of oil application, and also enhancing the reliability and durability of the device.

[0042] Furthermore, the oiling device has an oil injection channel 5 and an oil injection port 51. The oil injection channel 5 extends above the oil storage bin 1 of the upper folding knife 62 and is communicated with the oil storage bin 1. The oil injection port 51 is arranged at one end of the oil injection channel 5 far away from the oil storage bin 1.

[0043] Specifically, the oil injection channel 5 is a pipe connecting the oil storage bin 1 and the outside. The oil injection port 51 is arranged on one side of the oil injection channel 5 far away from the oil storage bin 1, that is, above the oil storage bin 1, so that the user can perform the oil injection operation from above. The inner diameter and length of the oil injection channel 5 are designed according to actual needs, which should not only ensure that the lubricating oil can flow smoothly into the oil storage bin 1, but also avoid the problems of inconvenient oil injection or blockage caused by being too long or too thin. The inner wall of the oil injection channel 5 is smooth, reducing the resistance when the lubricating oil flows and ensuring the oil injection efficiency.

[0044] Embodiment III This embodiment is a further description of the above Embodiments I to II.

[0045] As Figure 1 shown, in this embodiment, the oiling device has an elastic member 4, and the elastic member 4 is a return spring.

[0046] Furthermore, the elastic member 4 is arranged in the oil outlet channel 21, one end is connected to the oil plug 3, and the other end abuts against the inner wall of the oil outlet channel 21.

[0047] Specifically, the return spring is arranged in the oil outlet channel 21, one end is fixedly connected to the oil plug 3, and the other end abuts against the inner wall of the oil outlet channel 21. The return spring has sufficient elasticity and stiffness to deform when the oil plug 3 is moved by an external force and automatically reset after the external force is removed.

[0048] Furthermore, the elastic member 4 has at least two motion states.

[0049] In this embodiment, the first motion state is the oil leakage state. The oil plug 3 is forced to move, squeezing the elastic member 4 to deform, and generating a gap for oil leakage between the oil plug 3 and the oil leakage port 2.

[0050] Specifically, when lubrication is required for the processed part, an external force is applied to the oil plug 3 to move it along the oil outlet channel 21. The return spring is compressed and deformed. At the same time, the gap between the oil plug 3 and the oil leakage port 2 gradually increases. Under the action of pressure or gravity, the lubricating oil flows out through the gap and drips onto the part that needs to be lubricated.

[0051] In this embodiment, the second motion state is the blocking state. The elastic component 4 resets and pushes the oil plug 3 to move to block the oil leakage port 2.

[0052] Specifically, after the oiling operation is completed, the external force is removed, and the return spring starts to reset and push the oil plug 3 to move along the oil outlet channel 21. The gap between it and the oil leakage port 2 gradually decreases until the oil leakage port 2 is completely blocked, preventing the lubricating oil from flowing out continuously.

[0053] With such a setting, by controlling the movement of the oil plug 3 and the deformation amount of the return spring, the flow rate of the lubricating oil can be precisely adjusted to achieve precise coating. The device has a compact structure, reasonable design, and is easy to manufacture and maintain.

[0054] Embodiment 4 This embodiment is a further description of the above Embodiments 1 to 3.

[0055] As Figures 2 to 8 shown, in this embodiment, a mold is further provided, including: The upper mold 6 is provided with the oiling device described in the above embodiment; The lower mold 7 is arranged opposite to the upper mold 6; The plate 8 is arranged on the lower mold 7; The oiling device is arranged opposite to the bending surface of the plate 8, has an oil plug 3 and an oil leakage port 2, and is arranged on one side corresponding to the bending part of the plate (8) on the oiling device; The upper mold 6 drives the oiling device to move downward, and the oil plug 3 contacts the plate 8, and a gap is generated between it and the oil leakage port 2 for oil leakage.

[0056] In this embodiment, the mold includes an upper mold 6, a lower mold 7, an oiling device, and a plate 8 to be processed. The oiling device, as a key component, is integrated on one side of the upper mold 6, and the oiling operation of the plate 8 is realized along with the movement of the upper mold 6.

[0057] In this embodiment, the upper mold 6 is a movable component, usually made of high-strength materials to ensure stability and durability during the stamping or pressing process. The lower mold 7 is used to place and support the plate 8 to be processed. The oiling device is installed on one side of the upper mold 6, and its oil leakage port 2 faces downward so as to contact the plate 8 when the upper mold 6 moves downward.

[0058] In the above solution, as the upper die 6 descends, the oil plug 3 of the oiling device gradually approaches the surface of the sheet 8. When the oil plug 3 contacts the sheet 8, it moves under the reaction force of the sheet 8, squeezing the return spring to deform. At the same time, the gap between the oil plug 3 and the oil leakage port 2 gradually increases, and the lubricating oil begins to flow out from the gap and is applied to the surface of the bent part of the sheet 8. As the upper die 6 descends, after the sheet 8 is bent at a certain angle, it no longer contacts the oil plug 3. The oil plug 3 gradually resets under the action of the return spring and fits tightly with the oil leakage port 2 again to prevent the lubricating oil from continuing to leak.

[0059] With such a setting, the oiling operation is automatically realized through the movement of the upper die 6 without manual intervention, improving the production efficiency and automation level. The way of leaking oil through the gap generated when the oil plug 3 contacts the sheet 8 can ensure that the lubricating oil is evenly applied to the surface of the sheet 8 and improve the oiling quality. The oiling device is integrated on the upper die 6 without occupying extra space, making the entire die system compact in structure and convenient to operate.

[0060] Embodiment Five This embodiment is a further description of the above Embodiments One to Four.

[0061] As Figures 2 to 8 shown, in this embodiment, the lower die 7 has a lower slide base cutter 71 and a spacer block 73. The lower slide base cutter 71 is movably arranged on one side of the lower die 7, and the spacer block 73 is connected to the lower slide base cutter 71 and is movably arranged on one side close to the bent part of the sheet 8. The upper die 6 has an upper slide base cutter 63, which is arranged corresponding to the lower slide base cutter 71.

[0062] Specifically, the lower slide base cutter 71 can slide along a preset track. Positioning members are provided at both ends of the sheet 8 in the length direction for precise positioning of the sheet 8 and restricting the movement of the sheet 8 in the length direction. During the downward movement of the upper die 6, the inclined surface of the upper slide base cutter 63 contacts the inclined surface of the lower slide base cutter 71. Continuing to descend, the lower slide base cutter 71 is made to slide along the preset track and move towards the bent part of the sheet 8 through the inclined surface. The spacer block 73 is fixedly connected to the lower slide base cutter 71, and thus drives the spacer block 73 to move towards the bent part of the sheet 8 until the side wall of the spacer block 73 close to the bent part of the sheet 8 is at the bent part of the sheet 8. The upper die 6 continues to descend, and the lower slide base cutter 71 enters the straight body surface of the upper slide base cutter 63. The design of the lower slide base cutter 71 should ensure that it can stably and accurately insert into the specified position of the sheet 8 during the processing.

[0063] In this embodiment, the upper die 6 has an upper stripper plate 61, and the upper stripper plate 61 is arranged on one side of the oiling device and is arranged opposite to the sheet 8.

[0064] Specifically, the main function of the upper stripping plate 61 is to smoothly separate the sheet 8 from the lower die 7 through the upward movement of the upper die 6 after processing. The design of the upper stripping plate 61 should ensure good contact with the surface of the sheet 8 to avoid damaging the sheet 8 during the demolding process.

[0065] The upper folding knife 62 realizes the bending process of the sheet 8 by further pressing down of the upper die 6. The shape and size of the upper folding knife 62 should be precisely designed according to the bending requirements of the sheet 8 to ensure the accuracy of the bending angle and precision.

[0066] In the above solution, the sheet 8 is placed on the lower die 7 and precisely positioned by the lower slide seat insert knife 71. The upper die 6 moves downward, and the upper stripping plate 61 first contacts the sheet 8 to ensure the stability of the sheet 8 during processing. As the upper die 6 continues to move downward, the oil plug 3 in the oiling device contacts the sheet 8 and causes gap oil leakage to further lubricate the surface of the sheet 8. When the upper die 6 moves downward to a predetermined position, the upper folding knife 62 begins to contact the bending part of the sheet 8, and the bending process of the sheet 8 is realized by further pressing down of the upper die 6.

[0067] In this embodiment, since there are self-formed hooks at both ends of the sheet 8, when the upper die 6 and the lower die 7 are completely closed, direct demolding cannot be achieved after bending. Therefore, after bending and demolding, the upper die 6 moves upward, or the upper die 6 and the lower die 7 move away from each other until the lower slide seat insert knife 71 disengages from the straight body surface of the upper slide seat insert knife 63. Under the action of the elastic device, the lower slide seat insert knife 71 and the cushion block 73 are reset until the lower slide seat insert knife 71 disengages from the lower slide seat insert knife 63, realizing the reset of the lower slide seat insert knife 71 and the cushion block 73, and then demolding. In a preferred embodiment, the elastic device is a nitrogen spring 72.

[0068] With such a setting, the mold integrates multiple functional bodies such as oiling, positioning, demolding, and bending, improving production efficiency and processing precision. Through the up and down movement of the upper die 6, multiple processes are automatically completed, reducing manual intervention and labor intensity. The cooperation of components such as the lower slide seat insert knife 71, the upper stripping plate 61, and the upper folding knife 62 ensures the precision and stability of the processing of the sheet 8.

[0069] Embodiment Six This embodiment is a further description of the above Embodiments One to Five.

[0070] As Figures 2 to 8 shown, in this embodiment, an automatic oiling method is also provided, which is applied to the above-mentioned mold and includes: S1. The upper die 6 moves downward, or the upper die 6 and the lower die 7 move relative to each other, and the lower slide seat insert knife 71 of the lower die 7 begins to move; S2. The oil plug 3 contacts the plate 8, and oil leaks through the gap generated between the oil plug 3 and the oil leakage port 2. S3. The upper die 6 and the lower die 7 close to bend the plate 8, and the oil plug 3 resets to block the oil leakage port 2.

[0071] In the above solution, before the processing starts, the upper die 6 is in the initial position. With the issuance of the processing signal, the upper die 6 starts to move downward, and at the same time, the lower die 7 moves upward, or the upper die 6 starts to move downward. After the upper slide block cutter 63 and the lower slide block cutter 71 of the lower die 7 come into contact, the lower slide block cutter 71 starts to move to perform a preliminary positioning process on the plate 8.

[0072] As the upper die 6 continues to move downward, the oil plug 3 in the oiling device gradually approaches the surface of the plate 8. When the oil plug 3 contacts the plate 8, it moves under the reaction force of the plate 8, squeezing the return spring to deform. At this time, the gap between the oil plug 3 and the oil leakage port 2 gradually increases, and the lubricating oil begins to flow out from the gap and is smeared on the surface of the plate 8.

[0073] After the oiling on the surface of the plate 8 is completed, the upper die 6 continues to move downward until it is completely closed with the lower die 7. The bending process of the plate 8 is realized by further pressing down the upper die 6. At the same time, as the upper die 6 moves downward and the plate 8 deforms, the pressure on the oil plug 3 gradually decreases, and the return spring begins to release elastic potential energy and push the oil plug 3 to reset. Finally, the oil plug 3 fits tightly with the oil leakage port 2 again to prevent the lubricating oil from leaking continuously.

[0074] With such a setting, the entire oiling and bending process is realized automatically without manual intervention, improving the production efficiency and automation degree. By precisely controlling the movement of the upper die 6 and the lower die 7, as well as the state change of the oil plug 3 in the oiling device, the accuracy and stability of the processing of the plate 8 are ensured.

[0075] Further, when performing the above S1, it further includes: S11. The lower die 7 moves to a position where the lower slide block cutter 71 of the lower die 7 moves into the straight body surface of the upper slide block cutter 63 of the upper die 6.

[0076] Specifically, while the upper die 6 starts to move downward, the lower die 7 makes the lower slide block cutter 71 slide along a preset track until its tip part enters the straight body surface of the upper slide block cutter 63 of the upper die 6, that is, the non-working area before the upper die 6 contacts the plate 8, which helps to accurately position the plate 8 and provides stable support for the subsequent oiling and bending operations, ensuring the stability and accuracy of the plate 8 during the processing.

[0077] Further, when performing the above S2, it further includes: S21. The upper die 6 moves downward to a position where the upper stripping plate 61 of the upper die 6 contacts the plate 8.

[0078] Specifically, as the upper die 6 continues to move downward, the upper stripper plate 61 first contacts the surface of the sheet 8, providing stable support for the above-mentioned oil leakage process and preventing the sheet 8 from moving or deforming during the oiling process.

[0079] Further, when performing the step S3, it further includes: S31, the upper folding knife 62 of the upper die 6 presses the bending portion of the sheet 8, and a gap is generated between the oil plug 3 and the oil leakage port 2 for oil leakage; during the process of the upper folding knife 62 bending the sheet 8, the oil plug 3 is reset to block the oil leakage port 2.

[0080] Specifically, during the process of the upper die 6 continuing to move downward, the upper folding knife 62 gradually approaches and presses the bending portion of the sheet 8. Due to the change in the pressure received by the oil plug 3, the gap between the oil plug 3 and the oil leakage port 2 will increase, and the lubricating oil continues to flow out and is applied to the bending area. As the upper die 6 and the lower die 7 are closed, the upper folding knife 62 applies sufficient pressure to the sheet 8 to achieve the bending process. During this process, the pressure received by the oil plug 3 decreases, and the return spring pushes the oil plug 3 to gradually reset and fit tightly with the oil leakage port 2 again, preventing the lubricating oil from continuing to leak.

[0081] With such a setting, by precisely controlling the contact timing of the upper die 6, the lower die 7, and the oil plug 3 in the oiling device, precise control of the processing process of the sheet 8 is achieved. The stable support of the sheet 8 and the precise oiling and bending operations ensure the stability and reliability of the processing quality.

[0082] The above are only the preferred embodiments of the present invention, and there is no any form of limitation to the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of this patent, without departing from the scope of the technical solution of the present invention, can make some changes or modifications to the above-mentioned disclosed technical content to be equivalent embodiments with equivalent changes. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An oiling device for a mold, characterized in that: including an oil storage bin (1) arranged on the mold; an oil leakage port (2) arranged at the lower part of the oil storage bin (1); During the mold closing process, the oil leakage port (2) automatically oils the plate (8).

2. The oiling device for a mold according to claim 1, characterized in that: It further includes an upper folding knife (62) arranged on the upper mold (6) of the mold, and the oil storage bin (1) is arranged on the upper folding knife (62); an oil plug (3) movably arranged in the oil leakage port (2) to enable the oil leakage port (2) to leak oil and be blocked.

3. The oiling device for a mold according to claim 2, characterized in that: It further includes an oil outlet channel (21) respectively communicating with the oil leakage port (2) of the oil storage bin (1), and the oil plug (3) is movably arranged in the oil outlet channel (21).

4. An oiling device for a mold according to claim 3, characterized in that: It further includes an elastic member (4) arranged in the oil outlet channel (21), with one end connected to the oil plug (3) and the other end connected to the inner wall of the oil outlet channel (21); Preferably, the elastic member (4) is a return spring.

5. An oiling device for a mold according to any one of claims 2-4, characterized in that: A cavity is arranged on the upper folding knife (62), and the cavity forms the oil storage bin (1), or the oil storage bin (1) is an independent component arranged in the cavity.

6. A mold, characterized in that, It includes: an upper mold (6) provided with the oiling device according to any one of claims 2 - 5; a lower mold (7) arranged opposite to the upper mold (6) for carrying the plate (8) to be processed; The oiling device is arranged opposite to the bending surface of the plate (8); During the mold closing process of the mold, the oil plug (3) is triggered to make the oiling device leak oil to the plate (8).

7. The mold according to claim 6, characterized in that: During the mold closing process, the oil plug (3) touches the plate (8) and is stressed, making the oiling device leak oil to the plate (8); During the mold closing process, the plate (8) is bent, and the oil plug (3) rebounds and resets to block the oiling device.

8. The mold according to claim 6 or 7, characterized in that: The oil leakage port (2) is arranged on the upper folding knife (62) corresponding to the bending position of the plate (8).

9. The mold according to any one of claims 6 - 8, characterized in that: The lower mold (7) has: a lower slide block inserting knife (71) movably arranged on one side of the lower mold (7); a cushion block (73) movably arranged with the lower slide block inserting knife (71) on one side of the bending position of the plate (8); The upper mold (6) has: an upper slide block inserting knife (63) arranged corresponding to the lower slide block inserting knife (71) to push the lower slide block inserting knife (71) to move; an upper stripping plate (61) arranged on one side of the oiling device and arranged opposite to the plate (8); an upper folding knife (62) arranged opposite to the bending surface of the plate (8).

10. An automatic oiling method, characterized in that, Applied to the mold according to any one of claims 6 - 9, it includes: S1. The upper mold (6) and the lower mold (7) move relative to each other; S2. The oil plug (3) contacts the plate (8), and a gap is generated between the oil plug (3) and the oil leakage port (2) to leak oil; S3. During the process of the upper mold (6) and the lower mold (7) closing to bend the plate (8), the oil plug (3) resets to block the oil leakage port (2); Preferably; when performing S1, it further includes: S11. The lower mold (7) moves to make the lower slide block inserting knife (71) of the lower mold (7) move into the straight body surface of the upper slide block inserting knife (63) of the upper mold (6); When performing S2, it further includes: S21. The upper die (6) moves downward until the upper stripper plate (61) of the upper die (6) contacts the sheet material (8). More preferably, when performing S3, it further includes: S31. The upper folding knife (62) of the upper die (6) presses the bending part of the sheet material (8), and an oil leakage gap is generated between the oil plug (3) and the oil leakage port (2). During the process of the upper folding knife (62) bending the sheet material (8), the oil plug (3) resets to block the oil leakage port (2).

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