Mold with self-lubricating function

Abstract

The utility model discloses a mould with self -lubricating function, including upper die and lower die, the lower die is equipped with cavity and is located at the guide of lower die, the lower die still is equipped with self -lubricating subassembly, the inside of cavity lateral wall is equipped with the installation cavity for installing self -lubricating subassembly, the surface of cavity is equipped with the oil outlet hole of connecting self -lubricating subassembly, the self -lubricating subassembly includes the storage capsule with elasticity, conveying pipe spare and lubricating oil conveying control device. Can according to the dynamic adjustment of the oil supply of mould pressure, save the use amount of lubricating oil, save the cost, double extrusion structure guarantees the stable oil supply, and the oil is discharged in combination with automatic control, and the service life of mould is promoted, and it is again adaptive to the automatic production, and the operation and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a mold with self-lubricating function. Background Technology

[0002] Currently, mold lubrication primarily relies on manual periodic oil injection or fixed pipeline oil supply, which presents significant technical drawbacks. Manual oil injection is inefficient and prone to insufficient or excessive lubrication in high-wear areas such as cavity corners due to operational errors, accelerating mold wear. Fixed oil supply cannot dynamically adjust the oil supply based on mold closing pressure, resulting in significant media waste during non-operational periods. Furthermore, the lack of a temperature control mechanism makes the lubricating medium susceptible to reduced fluidity due to ambient temperature. In addition, existing structures lack effective filtration devices for media impurities, leading to easy clogging of oil outlets and compromising lubrication stability. Moreover, the absence of an automatic start / stop trigger mechanism linked to mold opening and closing actions necessitates manual intervention, making it difficult to adapt to automated production lines. This not only increases maintenance costs and operational complexity but also fails to guarantee timely and accurate lubrication. Utility Model Content

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a mold with self-lubricating function, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A mold with self-lubricating function includes an upper mold and a lower mold. The lower mold is provided with a cavity and a guide member provided on the lower mold. The lower mold is also provided with a self-lubricating component. The cavity sidewall is provided with a mounting cavity for installing the self-lubricating component. The surface of the cavity is provided with an oil outlet hole for connecting the self-lubricating component.

[0006] The self-lubricating component includes an elastic storage bladder, a delivery pipe, and a lubricating oil delivery control device. The storage bladder is embedded in the mounting cavity, and the interior of the storage bladder is filled with a lubricating medium. A pressure spring is provided between the inner wall of the mounting cavity and the storage bladder, and the pressure spring is located on both sides of the mounting cavity.

[0007] The conveying pipe includes multiple sets of conveying pipes. One end of the conveying pipe is connected to the outlet end of the storage bladder, and the other end extends radially along the side wall of the cavity to the surface of the cavity and connects with the oil outlet hole. The oil outlet hole is set in the corner wear area of ​​the cavity.

[0008] The mounting cavity has a mounting groove on one side, and the mounting groove has a compression structure. When the compression structure moves downward with the upper mold, it can compress the outer wall of the storage bladder. The inlet end of the storage bladder extends to the outside of the lower mold and is equipped with a one-way oil injection valve.

[0009] As a further description of the above technical solution, the lubricating oil delivery control device includes an electromagnetic valve body and a pressure sensor. The electromagnetic valve body is connected in series in the middle of the delivery pipe, and the pressure sensor is embedded in the inner wall of the cavity. The pressure sensor is electrically connected to the electromagnetic valve body. The pressure sensor is used to detect the cavity closing pressure and trigger the electromagnetic valve body to adjust the opening.

[0010] As a further description of the above technical solution, the lubricating oil delivery control device also includes a mold closing sensor, which is disposed at the end of the guide member and is electrically connected to the solenoid valve body.

[0011] As a further description of the above technical solution, a detachable filter element is provided at the port of the oil outlet. The filter element is a sintered metal mesh, and the axis of the oil outlet forms an angle of 30°-45° with the surface of the cavity.

[0012] As a further description of the above technical solution, the two ends of the pressure spring are respectively fixed to the inner wall of the mounting cavity and the outer wall of the storage bladder through a snap-fit ​​structure. The snap-fit ​​structure includes a boss on the inner wall of the mounting cavity and a slot on the outer wall of the storage bladder, and the boss and the slot are interference fit.

[0013] As a further description of the above technical solution, a control box with a built-in processor is provided on the outer side of the lower mold. The control box is electrically connected to the pressure sensor, the mold closing sensor, and the solenoid valve body. The surface of the control box is provided with a display screen for displaying the cavity pressure and the remaining amount of lubricating medium.

[0014] As a further description of the above technical solution, the outer wall of the conveying pipe is wrapped with a heat insulation layer, which is woven from ceramic fibers, and a sealing ring is provided at the connection between the conveying pipe and the storage bladder.

[0015] As a further description of the above technical solution, the extrusion structure includes a pressure block, a return spring, and a pressure rod. The pressure rod is connected to the pressure block through the return spring. The end of the pressure rod away from the pressure block is located at the bottom of the mounting cavity, and the pressure rod is movably disposed within the mounting groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] The mold with self-lubricating function of this utility model has at least one of the following beneficial effects during use:

[0018] Firstly, the mold closing sensor is linked with the solenoid valve body, automatically supplying oil when the mold closes and immediately closing when it opens. Combined with a pressure sensor, the valve opening is adjusted as needed, saving 20%-30% of lubricating medium compared to traditional fixed oil supply, avoiding waste during non-working periods. Secondly, the dual extrusion structure ensures stable oil supply, with the oil outlet precisely corresponding to the wear area at the corner of the cavity at a 30°-45° angle, ensuring even lubrication coverage of high-wear areas and reducing excessive localized wear. Thirdly, the sintered metal mesh filter element prevents clogging of the oil outlet, the ceramic fiber insulation layer is suitable for operating conditions from -10℃ to 150℃, and the sealing ring prevents media leakage, improving the stability of the lubrication system. Fourthly, the snap-fit ​​structure secures the pressure spring to prevent loosening, the control box displays the cavity pressure and oil volume in real time, and the one-way oil injection valve eliminates the need for disassembly for oil replenishment, reducing maintenance difficulty. In summary, this design not only extends the mold's service life but also adapts to automated production, reducing operating costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a mold with self-lubricating function according to the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of the lower mold portion of a mold with self-lubricating function according to this utility model;

[0021] Figure 3 This is a top view of the lower mold portion of a mold with self-lubricating function according to this utility model.

[0022] Figure 4 This is a perspective structural diagram of the lower mold portion of a mold with self-lubricating function according to this utility model.

[0023] Numbering on the map:

[0024] 1. Lower die; 101. Upper die; 102. Guide component; 103. Cavity; 104. Extrusion structure; 105. Mounting groove; 106. Pressure rod; 107. Pressure block; 108. Return spring; 109. Control box; 110. One-way oil injection valve; 2. Mounting cavity; 201. Pressure spring; 202. Filter element; 203. Oil outlet; 3. Self-lubricating component; 301. Storage bladder; 302. Lubricating oil delivery control device; 303. Solenoid valve body; 304. Delivery pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-4 As shown, this utility model provides a mold with self-lubricating function, including an upper mold 101 and a lower mold 1. The lower mold 1 is provided with a cavity 103 and a guide 102 provided on the lower mold 1. The lower mold 1 is also provided with a self-lubricating component 3. The cavity 103 has an installation cavity 2 for installing the self-lubricating component 3 inside the side wall. The surface of the cavity 103 is provided with an oil outlet hole 203 for connecting the self-lubricating component 3.

[0027] The self-lubricating component 3 includes an elastic storage bladder 301, a delivery pipe 304, and a lubricating oil delivery control device 302. The storage bladder 301 is embedded in the mounting cavity 2. The interior of the storage bladder 301 is filled with a lubricating medium. A pressure spring 201 is provided between the inner wall of the mounting cavity 2 and the storage bladder 301. The pressure spring 201 is provided on both sides of the mounting cavity 2.

[0028] When the mold begins to close, the upper mold 101 moves downward, and the guide member 102 of the lower mold 1 assists in positioning. The mold closing sensor located at the end of the guide sleeve first detects the mold closing action and transmits an electrical signal to the control box 109 (with built-in processor) on the outside of the lower mold 1. After receiving the signal, the control box 109 immediately sends an "open" command to the solenoid valve body 303 connected in series in the middle of the delivery pipe 304 to open the channel for the delivery of lubricating medium.

[0029] The conveying pipe 304 includes multiple sets of conveying pipes 304. One end of the conveying pipe 304 is connected to the outlet end of the storage bladder 301, and the other end extends radially along the side wall of the cavity 103 to the surface of the cavity 103 and connects with the oil outlet 203. The oil outlet 203 is set corresponding to the corner wear area of ​​the cavity 103.

[0030] Under the action of dual extrusion, the lubricating medium in the storage bladder 301 enters multiple sets of delivery pipes 304 through the outlet end: the ceramic fiber insulation layer wrapped around the outer wall of the delivery pipe 304 can maintain the temperature stability of the lubricating medium and avoid the flowability affected by temperature fluctuations; the sealing ring at the connection between the delivery pipe 304 and the storage bladder 301 prevents the medium from leaking.

[0031] The lubricating medium reaches the oil outlet 203 on the surface of the cavity 103 along the delivery pipe 304 (extending radially along the side wall of the cavity 103): the oil outlet 203 precisely corresponds to the corner wear area (high wear part) of the cavity 103, and the axis forms an angle of 30°-45° with the surface of the cavity 103 (optimizing the lubrication coverage angle); the metal sintered mesh filter element 202 (removable) at the port of the oil outlet 203 can filter impurities in the medium to avoid clogging the oil outlet 203 or scratching the surface of the cavity 103.

[0032] The mounting cavity 2 has a mounting groove 105 on one side, and the mounting groove 105 has a compression structure 104. When the compression structure 104 moves downward with the upper mold 101, it can compress the outer wall of the storage bladder 301. The inlet end of the storage bladder 301 extends to the outside of the lower mold 1 and is provided with a one-way oil injection valve 110.

[0033] As the upper die 101 continues to descend, its pressure acts on the extrusion structure 104 within the mounting groove 105 of the lower die 1. The pressure block 107, under pressure, compresses the return spring 108, driving the pressure rod 106 to move along the mounting groove 105 and bend upwards, directly extruding the storage bladder 301 (made of elastic material) embedded in the mounting cavity 2. Simultaneously, the pressure springs 201 (fixed by a snap-fit ​​structure, with the boss and slot interfering with each other) between the side walls of the mounting cavity 2 and the storage bladder 301, due to the deformation caused by the compression of the bladder, further release their elasticity, creating a "double extrusion" on the storage bladder 301, ensuring that the lubricating medium inside the bladder receives stable extrusion power.

[0034] Furthermore, the lubricating oil delivery control device 302 includes an electromagnetic valve body 303 and a pressure sensor. The electromagnetic valve body 303 is connected in series in the middle of the delivery pipe 304. The pressure sensor is embedded in the inner wall of the cavity 103 and is electrically connected to the electromagnetic valve body 303. The pressure sensor is used to detect the mold closing pressure of the cavity 103 and trigger the electromagnetic valve body 303 to adjust the opening.

[0035] A pressure sensor embedded in the inner wall of the cavity 103 detects the mold closing pressure in real time and transmits the pressure signal to the control box 109. If the mold closing pressure increases (the cavity 103 is subjected to increased force, and the risk of wear increases), the control box 109 adjusts the solenoid valve body 303 to increase the opening and increase the delivery of lubricating medium. If the pressure decreases, the solenoid valve body 303 reduces the opening to reduce medium consumption and achieve "on-demand oil supply".

[0036] Furthermore, the lubricating oil delivery control device 302 also includes a mold closing sensor, which is disposed at the end of the guide member 102 and is electrically connected to the solenoid valve body 303. When the mold closing sensor detects mold closing, it triggers the solenoid valve body 303 to open; when it detects mold separation, it triggers the solenoid valve body 303 to close.

[0037] When the mold finishes processing and begins to separate, the mold closing sensor detects a "separation signal," and the control box 109 immediately instructs the solenoid valve 303 to close, stopping the delivery of lubricating medium and preventing waste of medium during non-working periods. If the control box 109 display screen (showing the remaining amount of lubricating medium) indicates insufficient medium, lubricating medium can be replenished through the one-way oil injection valve 110 extending from the storage bladder 301 to the outside of the lower mold 1 (one-way design prevents reverse leakage of medium).

[0038] Furthermore, a removable filter element 202 is provided at the port of the oil outlet 203. The filter element 202 is a sintered metal mesh. The axis of the oil outlet 203 forms a 30°-45° angle with the surface of the cavity 103. The oil outlet 203 precisely corresponds to the wear area at the corner of the cavity 103 (focusing on high-wear points). The 30°-45° angle design ensures that the lubricating medium evenly covers the surface of the cavity 103. The double extrusion (extrusion structure 104 + pressure spring 201) ensures stable oil supply pressure and avoids excessive local wear caused by lubrication interruption.

[0039] Furthermore, the two ends of the pressure spring 201 are respectively fixed to the inner wall of the mounting cavity 2 and the outer wall of the storage bladder 301 by a snap-fit ​​structure. The snap-fit ​​structure includes a boss on the inner wall of the mounting cavity 2 and a slot on the outer wall of the storage bladder 301, and the boss and the slot are interference fit.

[0040] The pressure springs 201 between the two side walls of the mounting cavity 2 and the storage bladder 301 adopt a snap-fit ​​structure (the boss and the slot are interference fit) to prevent the springs from loosening and shifting during long-term compression, ensuring the stability of the double compression effect and extending the service life of the self-lubricating component 3.

[0041] Furthermore, the lower mold 1 is provided with a control box 109 with a built-in processor on its outer side. The control box 109 is electrically connected to the pressure sensor, the mold closing sensor, and the solenoid valve body 303. The surface of the control box 109 is provided with a display screen for displaying the pressure of the cavity 103 and the remaining amount of lubricating medium.

[0042] The feedback adjustment mechanism of the pressure sensor and the solenoid valve body 303 can dynamically adjust the oil supply according to the mold closing pressure (more oil is supplied when the pressure is high and less oil is supplied when the pressure is low); the solenoid valve body 303 automatically closes when the mold is separated, avoiding the waste of media in the non-working state, which can save 20%-30% of lubricating media compared with the traditional fixed oil supply method.

[0043] The control box 109 displays the pressure of the cavity 103 in real time (for easy monitoring of the mold stress state) and the remaining amount of lubricating medium (for timely oil replenishment); the one-way oil injection valve 110 is designed to simplify the oil replenishment operation, and the medium can be replenished without disassembling the mold; the pressure spring 201 is fixed by a snap-fit ​​structure, which makes installation and disassembly convenient and reduces the difficulty of maintenance.

[0044] Furthermore, the outer wall of the delivery pipe 304 is wrapped with an insulation layer, which is woven from ceramic fibers. A sealing ring is provided at the connection between the delivery pipe 304 and the storage bladder 301. The ceramic fiber insulation layer can maintain the stable temperature of the lubricating medium (especially suitable for high-temperature molding conditions), preventing the medium from affecting its fluidity due to low-temperature solidification or high-temperature deterioration, and is suitable for working environments ranging from -10℃ to 150℃. The sealing ring at the connection between the delivery pipe 304 and the storage bladder 301 can prevent leakage of the lubricating medium.

[0045] Furthermore, the extrusion structure 104 includes a pressure block 107, a return spring 108, and a pressure rod 106. The pressure rod 106 is connected to the pressure block 107 via the return spring 108. One end of the pressure rod 106 away from the pressure block 107 is located at the bottom of the mounting cavity 2, and the pressure rod 106 is movably disposed within the mounting groove 105. Under the action of the pressure block 107, the pressure rod 106 tilts upward, compressing the storage bladder 301 for lubricating oil extrusion.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A mold with self-lubricating function, comprising an upper mold and a lower mold, wherein the lower mold is provided with a cavity and a guide member disposed thereon, characterized in that, The lower mold is also provided with a self-lubricating component. The cavity sidewall has an installation cavity for installing the self-lubricating component, and the surface of the cavity has an oil outlet hole for connecting the self-lubricating component. The self-lubricating component includes an elastic storage bladder, a delivery pipe, and a lubricating oil delivery control device. The storage bladder is embedded in the mounting cavity, and the interior of the storage bladder is filled with a lubricating medium. A pressure spring is provided between the inner wall of the mounting cavity and the storage bladder, and the pressure spring is located on both sides of the mounting cavity. The conveying pipe includes multiple sets of conveying pipes. One end of the conveying pipe is connected to the outlet end of the storage bladder, and the other end extends radially along the side wall of the cavity to the surface of the cavity and connects with the oil outlet hole. The oil outlet hole is set in the corner wear area of ​​the cavity. The mounting cavity has a mounting groove on one side, and the mounting groove has a compression structure. When the compression structure moves downward with the upper mold, it can compress the outer wall of the storage bladder. The inlet end of the storage bladder extends to the outside of the lower mold and is equipped with a one-way oil injection valve.

2. A mold with self-lubricating function according to claim 1, characterized in that: The lubricating oil delivery control device includes an electromagnetic valve body and a pressure sensor. The electromagnetic valve body is connected in series in the middle of the delivery pipe, and the pressure sensor is embedded in the inner wall of the cavity. The pressure sensor is electrically connected to the electromagnetic valve body. The pressure sensor is used to detect the cavity closing pressure and trigger the electromagnetic valve body to adjust the opening.

3. A mold with self-lubricating function according to claim 1, characterized in that: The lubricating oil delivery control device also includes a mold closing sensor, which is disposed at the end of the guide member and is electrically connected to the solenoid valve body.

4. A mold with self-lubricating function according to claim 1, characterized in that: A detachable filter element is provided at the port of the oil outlet. The filter element is a sintered metal mesh. The axis of the oil outlet forms an angle of 30°-45° with the surface of the cavity.

5. A mold with self-lubricating function according to claim 1, characterized in that: The two ends of the pressure spring are respectively fixed to the inner wall of the mounting cavity and the outer wall of the storage bladder through a snap-fit ​​structure. The snap-fit ​​structure includes a boss on the inner wall of the mounting cavity and a slot on the outer wall of the storage bladder, and the boss and the slot are interference fit.

6. A mold with self-lubricating function according to claim 1, characterized in that: The lower mold has a control box with a built-in processor on its outer side. The control box is electrically connected to the pressure sensor, the mold closing sensor, and the solenoid valve body. The surface of the control box is equipped with a display screen for displaying the cavity pressure and the remaining amount of lubricating medium.

7. A mold with self-lubricating function according to claim 1, characterized in that: The outer wall of the delivery pipe is wrapped with an insulation layer, which is woven from ceramic fibers. A sealing ring is provided at the connection between the delivery pipe and the storage bladder.

8. A mold with self-lubricating function according to claim 1, characterized in that: The extrusion structure includes a pressure block, a return spring, and a pressure rod. The pressure rod is connected to the pressure block through the return spring. The end of the pressure rod away from the pressure block is located at the bottom of the mounting cavity, and the pressure rod is movably disposed within the mounting groove.

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