Mold clamping prevention device of glass mold pressing mold

Abstract

A mold clamping prevention device of a glass mold pressing mold comprises a clamping device used for guiding and fixing a mold body, a plurality of exhaust holes communicated with a mold cavity of the mold body are formed in the peripheral side of the mold body, and a cooling channel capable of being communicated with the exhaust holes is arranged on the clamping device. And cooling gas can be introduced into the cooling channel and is input into the mold cavity of the mold body so as to be quickly cooled and demolded. According to the utility model, the plurality of exhaust holes are formed in the peripheral side of the mold body, and cooling gas is directly input into the mold cavity by utilizing the cooling channel on the clamping device, so that the temperature of a glass product in the mold cavity is rapidly reduced, and the gap between the mold core and the mold core sleeve is prevented from being reduced due to thermal expansion through the rapid cooling mechanism, so that the problem of mold clamping is effectively solved; and compared with a traditional natural cooling or external cold air blowing mode, the cooling time is greatly shortened, and the production efficiency is remarkably improved.

Description

[Technical Field]

[0001] This utility model relates to the field of glass molding die technology, and in particular to an anti-jamming device for glass molding dies. [Background Technology]

[0002] Glass molding is a high-precision forming process widely used in optical components, precision instruments, and other fields. In glass molding, the design and manufacture of the mold play a crucial role in product quality and production efficiency. Because glass molding requires high temperature and high pressure conditions, the mold material is typically a metal alloy with high hardness, high wear resistance, and good thermal conductivity. However, this material is prone to thermal expansion at high temperatures, causing changes in the gaps between the internal structures of the mold, thus leading to a series of problems.

[0003] First, after hot pressing, the mold temperature rises, and the metal material expands due to heat, reducing the gap between the mold core and the mold core sleeve. This causes the mold core to be difficult to remove, a phenomenon known as "mold jamming." This not only increases the difficulty of demolding but may also lead to mold damage or product defects, affecting production efficiency and product quality. Second, when the mold exits the molding machine, its temperature is usually high (50℃~200℃). Current technology typically relies on natural cooling or external air cooling for slow cooling, but this conventional approach results in a long cooling time, further extending the production cycle and reducing overall efficiency. [Utility Model Content]

[0004] The purpose of this utility model is to provide an anti-jamming device for glass molding dies, which aims to solve the technical problems of mold jamming caused by high temperature, low cooling efficiency, and long production cycle in the prior art.

[0005] This utility model is achieved through the following technical solution:

[0006] A device for preventing jamming of a glass molding die includes a clamping device for guiding and fixing the die body. The die body has multiple vent holes on its periphery that communicate with its cavity. The clamping device has a cooling channel that communicates with the vent holes. The cooling channel can be connected to cooling gas and input into the cavity of the die body for rapid cooling and demolding.

[0007] As described above, a glass molding die anti-jamming device includes an upper mold core and a lower mold core that cooperate to form a mold cavity. A mold core sleeve is fitted around the outer periphery of the two mold cores. A plurality of vent holes are provided on the periphery of the mold core sleeve. The clamping device includes a first clamping block and a second clamping block symmetrically arranged on both sides of the mold core sleeve. Cooling channels are respectively provided on the side of the first clamping block and the second clamping block facing the mold core sleeve.

[0008] As described above, an anti-jamming device for a glass molding die includes a first clamping block comprising a connecting portion for fixing to a working platform, the connecting portion having multiple connecting holes, a clamping portion at one end of the connecting portion for engaging with the mold core sleeve, a cooling channel within the clamping portion, the cooling channel including a first cooling air passage penetrating both sides of the clamping portion, and multiple second cooling air passages at one end of the clamping portion facing the mold core sleeve, the second cooling air passages communicating with the first cooling air passages, and their end holes being able to be matched and connected with the exhaust holes, the second clamping block being identical to the first clamping block.

[0009] As described above, in a glass molding die anti-jamming device, the first cooling gas path has cooling connectors at both ends for receiving cooling gas.

[0010] As described above, in a glass molding die anti-jamming device, the end of the clamping part has a V-shaped structure, and multiple end holes of the second cooling air passage are evenly arranged on both sides of the end of the clamping part.

[0011] The anti-jamming device for a glass molding die as described above further includes a rotary positioning mechanism located below the clamping device. The rotary positioning mechanism is used to place and allow the mold body to rotate so that the vent hole aligns with the cooling channel.

[0012] As described above, the anti-jamming device for a glass molding die includes a rotary positioning mechanism comprising a rotary platform for placing the die body, with a rotary motor connected below the rotary platform.

[0013] As described above, in a glass molding die anti-jamming device, the rotary motor is electrically connected to a vision positioning system.

[0014] The anti-jamming device for a glass molding die as described above, wherein the cooling gas is one of nitrogen, carbon dioxide, argon, or helium.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This utility model provides multiple vent holes around the mold body and uses the cooling channel on the clamping device to directly input cooling gas into the mold cavity, which quickly reduces the temperature of the glass product in the mold cavity. Through this rapid cooling mechanism, the gap between the mold core and the mold core sleeve is reduced due to thermal expansion, thus effectively solving the mold jamming problem. Compared with traditional natural cooling or external blowing cooling air, the cooling time is greatly shortened, significantly improving production efficiency.

[0017] 2. The rotary positioning mechanism of this utility model, combined with a vision positioning system, automatically adjusts the position of the mold body to ensure precise alignment between the exhaust port and the cooling channel. This eliminates the need for manual adjustment, reduces human intervention, and improves operational convenience and cooling accuracy. [Attached Image Description]

[0018] To more clearly illustrate the technical solutions in the embodiments of the utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a front view of this embodiment;

[0020] Figure 2 This is a top view of this embodiment;

[0021] Figure 3 This is a side view of this embodiment;

[0022] Figure 4 This is a top view of the first clamping block in this embodiment;

[0023] Figure 5 This is a front view of the first clamping block in this embodiment;

[0024] Figure 6 This is a top view of the mold body in this embodiment;

[0025] Figure 7 for Figure 6 A schematic diagram of a partial cross-section along line AB.

[0026] Figure 8 for Figure 6 A schematic diagram of the cross section along line AA.

Detailed Implementation Methods

[0027] To make the technical problems solved by this application, the technical solutions, and the beneficial effects clearer, this application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0028] Glass molding is a high-precision forming process widely used in optical components, precision instruments, and other fields. During glass molding, the molds require extremely high machining precision, and the fit between the mold core and the mold core sleeve is typically very precise. This precise fit can lead to a series of problems during hot pressing due to temperature increases. Firstly, the increased mold temperature after hot pressing causes dimensional changes in the metal alloy material due to thermal expansion, reducing the gap between the upper mold core and the mold core sleeve, making it difficult to remove the upper mold core. Secondly, the mold is usually discharged from the molding machine at a temperature higher than room temperature, ranging from 50℃ to 200℃ depending on the process. Relying solely on natural cooling or slow cooling by blowing cold air onto the outside of the mold results in a long cooling time, impacting production efficiency.

[0029] To address the aforementioned problems, this embodiment proposes an anti-jamming device for glass molding dies. By optimizing the die structure design and introducing a rapid cooling mechanism, it effectively solves the problem of difficulty in removing the mold core under high-temperature conditions, while significantly improving cooling efficiency and production efficiency. Please refer to [link / reference]. Figures 1 to 8 A glass molding die anti-jamming device includes a clamping device 2 for guiding and fixing the mold body 1. The mold body 1 has multiple vent holes 11 connected to its mold cavity on its periphery. The clamping device 2 is provided with a cooling channel 21 that can communicate with the vent holes 11. The cooling channel 21 can be connected to cooling gas and input into the mold cavity of the mold body 1 for rapid cooling and demolding.

[0030] In this embodiment, the mold body 1 is the core component of the glass molding mold, and multiple vent holes 11 communicating with the mold cavity are provided on its periphery. These vent holes 11 can be evenly distributed on the periphery of the mold body 1, or they can be set in specific positions according to actual process requirements. The main function of the vent holes 11 is to discharge the gas in the mold cavity, avoiding molding defects caused by gas residue. The vent holes 11 can also serve as a flow channel for cooling gas, improving cooling efficiency.

[0031] The clamping device 2 is used to fix and guide the mold body 1 to ensure the stability of the mold during operation. The clamping device 2 is equipped with a cooling channel 21, which can be connected to an external cooling gas source via pipes or other connections. The shape of the orifice of the cooling channel 21 corresponds to the vent hole 11 on the mold body 1, so that cooling gas can be smoothly input into the mold cavity of the mold body 1. The specific form of the cooling channel 21 can be selected according to actual needs, for example, it can be a straight, spiral, or branched structure.

[0032] In actual operation, after the glass molding is completed, cooling gas is input into the mold cavity of the mold body 1 through the cooling channel 21 on the clamping device 2. The cooling gas can enter the interior of the mold cavity through the exhaust port 11, rapidly reducing the temperature of the glass product inside the mold cavity, thereby achieving rapid cooling and demolding. This design not only shortens the production cycle but also effectively avoids the problem of mold jamming caused by high temperature.

[0033] The choice of cooling gas depends on the specific process conditions. In some possible embodiments, the cooling gas can be one of the inert gases such as nitrogen, carbon dioxide, argon, and helium, or a mixture of the above gases, such as a mixture of nitrogen and carbon dioxide, which can reduce costs while ensuring cooling efficiency.

[0034] Preferably, the cooling gas can be nitrogen, because nitrogen is inexpensive to obtain in the factory, is mostly in liquid form, has a low temperature, and will not cause pollution or oxidation to the mold body or the glass products inside it.

[0035] This embodiment achieves efficient input of cooling gas and rapid cooling and demolding by providing vent holes 11 on the periphery of the mold core sleeve 14 and cooling channels 21 on the first clamping block 22 and the second clamping block 23. This device not only solves the problem of difficult removal of the mold core at high temperatures, but also significantly improves the production efficiency and product quality of the glass molding process. It should also be emphasized that in the prior art, the vent holes on the glass molding die are used to expel waste gas from the mold during hot pressing; they are essentially process holes. However, this embodiment expands their function by introducing a rapid cooling mechanism.

[0036] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the mold body 1 includes an upper mold core 12 and a lower mold core 13 that cooperate to form a mold cavity. A mold core sleeve 14 is sleeved on the outer periphery of the two. A plurality of vent holes 11 are provided on the periphery of the mold core sleeve 14. The clamping device 2 includes a first clamping block 22 and a second clamping block 23 symmetrically arranged on both sides of the mold core sleeve 14. The cooling channel 21 is provided in the side of the first clamping block 22 and the second clamping block 23 facing the mold core sleeve 14, respectively.

[0037] In this embodiment, the mold body 1 consists of an upper mold core 12 and a lower mold core 13 that cooperate to form the mold cavity. The two are precisely fitted together to form the glass product. To enhance the overall stability and thermal conductivity of the mold, a mold core sleeve 14 is fitted around the outer periphery of the upper mold core 12 and the lower mold core 13. The mold core sleeve 14 not only serves to fix and protect the mold core, but also realizes the function of gas discharge and cooling gas flow through multiple vent holes 11 provided on its periphery. The clamping device 2 includes a first clamping block 22 and a second clamping block 23 symmetrically arranged on both sides of the mold core sleeve 14. The first clamping block 22 and the second clamping block 23 are fixed to both sides of the mold core sleeve 14 by bolts, hydraulic pressure or other connection methods to ensure the stability of the mold body 1 during operation.

[0038] Furthermore, as a preferred embodiment of this solution and not a limitation, the first clamping block 22 includes a connecting portion 221 for fixing to the working platform. The connecting portion 221 is provided with a plurality of connecting holes 2211. One end of the connecting portion 221 is provided with a clamping portion 222 that can be connected to the mold core sleeve 14. The clamping portion 222 is provided with the cooling channel 21. The cooling channel 21 includes a first cooling air passage 211 that passes through both sides of the clamping portion 222. The clamping portion 222 has a plurality of second cooling air passages 212 at one end facing the mold core sleeve 14. The second cooling air passages 212 communicate with the first cooling air passages 211, and their end holes can be matched and connected with the exhaust hole 11. The second clamping block 23 is the same as the first clamping block 22.

[0039] In this embodiment, the connecting part 221 is used to fix the clamping device 2 to the working platform. The connecting part 221 has multiple connecting holes 2211, which can be used to fix it to the working platform via bolts, screws, or other fasteners. The number and distribution of the connecting holes 2211 can be adjusted according to actual installation requirements, for example, using a symmetrical or asymmetrical distribution. The clamping part 222 is located at one end of the connecting part 221, and its inner side is tightly fitted with the outer peripheral surface of the mold core sleeve 14. The inner side of the clamping part 222 is provided with a cooling channel 21, which includes the following two parts:

[0040] The first cooling gas passage 211 passes through both sides of the clamping part 222, forming the main flow path of the cooling gas. The first cooling gas passage 211 can be connected to a cooling gas source through an external pipeline;

[0041] The second cooling air passage 212 is located at the end of the clamping part 222 facing the mold core sleeve 14, and its end hole corresponds one-to-one with the exhaust hole 11 on the mold core sleeve 14. The second cooling air passage 212 is connected to the first cooling air passage 211 to ensure that the cooling gas can be directly input into the exhaust hole 11 of the mold core sleeve 14 through the second cooling air passage 212.

[0042] Furthermore, the second clamping block 23 has the same structure as the first clamping block 22, and is symmetrically arranged on the other side of the mold core sleeve 14. The second clamping block 23 also includes a connecting part 221, a clamping part 222, a first cooling air passage 211, and a second cooling air passage 212. Through the symmetrical cooperation of the first clamping block 22 and the second clamping block 23, the clamping device 2 can evenly clamp the mold core sleeve 14, avoiding mold deformation caused by uneven force.

[0043] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the first cooling air passage 211 is provided with cooling connectors 2111 for receiving cooling gas at both ends of the opening.

[0044] In this embodiment, the cooling connector 2111 is a key component used to connect the external cooling gas pipeline and the first cooling gas passage 211, and is respectively located at the openings at both ends of the first cooling gas passage 211. It can be fixed to the clamping part 222 by means of threaded connection, snap-fit ​​fixing or welding to ensure a firm and sealed connection.

[0045] Optionally, in some embodiments, the cooling connector 2111 may adopt a common structure such as a standard quick connector, threaded connector, or flange connector to facilitate quick connection with external cooling gas pipelines such as rubber hoses or metal pipes. For example, a quick connector with a sealing ring can be selected, allowing for quick insertion and removal via pressing or turning. The cooling connector 2111 is made of stainless steel, aluminum alloy, or high-temperature resistant plastic to adapt to the high temperature and high pressure conditions in the mold working environment.

[0046] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the end of the clamping part 222 has a V-shaped structure, and the end holes of the plurality of second cooling air passages 212 are evenly provided on both sides of the end of the clamping part 222.

[0047] In this embodiment, the end of the clamping part 222 adopts a V-shaped structure. This V-shaped structure can adapt its geometry to the outer peripheral surface of the mold core sleeve 14, avoiding clamping loosening caused by high temperature expansion. In addition, the inclined surface of the V-shaped structure can disperse the stress generated during clamping, reduce the local pressure on the surface of the mold core sleeve 14, and extend the mold life.

[0048] Multiple end holes of the second cooling air passage 212 are evenly distributed on both sides of the end of the clamping part 222. Specifically, the end holes of the second cooling air passage 212 are symmetrically distributed along both sides of the V-shaped structure. For example, one end hole is evenly provided on each side. The position of the end hole corresponds one-to-one with the exhaust hole 11 on the mold core sleeve 14 to ensure accurate input of cooling gas.

[0049] Furthermore, as a preferred embodiment of this solution and not a limitation, it also includes a rotary positioning mechanism 3, which is located below the clamping device 2 and is used to place and allow the mold body 1 to rotate so that the exhaust hole 11 corresponds to the cooling channel 21.

[0050] In order to ensure the precise alignment of the exhaust port 11 with the cooling channel 21, thereby improving cooling efficiency and ease of operation, a rotary positioning mechanism 3 is added in this embodiment. The rotary positioning mechanism 3 is located below the clamping device 2 and serves as a support and rotation platform for the mold body 1.

[0051] Optionally, the rotary positioning mechanism 3 can be a mechanical rotary structure, such as a motor-driven structure, or a manual rotary structure, such as a handwheel combined with gear transmission.

[0052] The rotary positioning mechanism 3 ensures that the mold body 1 can be adjusted to an accurate position by rotation, so that the vent 11 can be accurately aligned with the cooling channel 21.

[0053] Furthermore, the rotary positioning mechanism 3 includes a rotary platform 31 for placing the mold body 1, and a rotary motor 32 is connected below the rotary platform 31. The rotary platform 31 can be a disc-shaped or square structure, and its upper end can be provided with a positioning groove or boss that matches the bottom of the mold body 1 to ensure the stability of the mold placement. The bottom center of the rotary platform 31 is fixedly connected to the output shaft of the rotary motor 32 through a bearing to ensure smooth rotation without deviation.

[0054] The rotary motor 32 can be a servo motor, stepper motor, or DC motor, depending on the required rotational accuracy and speed. It can be integrated into an automated control system, allowing for automatic rotation at preset angles via PLC or microprocessor programming. Preferably, the rotary motor 32 is a servo motor, suitable for precise alignment of the exhaust port 11 and the cooling channel 21.

[0055] Furthermore, as a preferred embodiment of this solution and not a limitation, the rotary motor 32 is electrically connected to a visual positioning system (not shown in the figure).

[0056] In this embodiment, the visual positioning system includes a camera, an image processing unit, and a control module. Specifically, the camera can be mounted above the clamping device 2 or the work platform to capture images of the mold body 1 in real time. The camera can be a high-resolution industrial camera such as a CCD or CMOS sensor and equipped with a ring light source to enhance image clarity. For example, the camera is fixed to the side of the clamping device 2 by a bracket, and the lens is aimed at the area of ​​the peripheral vent 11 of the mold body 1.

[0057] The image processing unit is electrically connected to the camera and is used to analyze image data and identify the position of the exhaust port 11. An embedded processor or industrial computer can be used to run image recognition algorithms (such as edge detection, template matching, or deep learning models) to calculate the coordinates and angular deviation of the exhaust port 11 in real time.

[0058] The control module is electrically connected to the image processing unit and the rotary motor. Based on the image processing results, it generates control commands to drive the rotary motor 32 to adjust the rotation angle. The control module can be integrated into a PLC or microcontroller and supports closed-loop feedback control.

[0059] Specifically, during the rotation adjustment of the mold body 1, the workflow of the vision positioning system is as follows:

[0060] S1. Image acquisition: The camera captures images of the mold body 1 in real time and captures the position information of the vent 11.

[0061] S2. Image Analysis: The image processing unit identifies the center coordinates of the exhaust port 11 through an algorithm and calculates the angular deviation Δθ between it and the target position of the cooling channel.

[0062] S3, Angle calibration: The control module generates a control signal based on Δθ, which drives the rotary motor 32 to rotate the corresponding angle until the exhaust port 11 is aligned with the cooling channel 21.

[0063] S4. Closed-loop feedback: The system continuously monitors the alignment status. If there is a slight deviation, it performs a secondary calibration by fine-tuning the rotary motor 32 to ensure that the docking accuracy is ≤0.1°.

[0064] In summary, in this embodiment, by introducing a visual positioning system, the identification and alignment of the vent hole 11 can be completed automatically without manual intervention, reducing the difficulty of operation and time cost, making the rotation and adjustment of the mold body 1 faster and more accurate, further reducing the risk of mold jamming, and improving production efficiency and product quality.

[0065] Working principle of this utility model:

[0066] This embodiment proposes an anti-jamming device for glass molding dies. By optimizing the mold structure design and introducing a rapid cooling mechanism, it solves the problem of difficult mold core removal under high-temperature conditions, while significantly improving cooling efficiency and production efficiency. The device includes a mold body, a clamping device, and a rotary positioning mechanism: the mold body has multiple vent holes around the mold core sleeve to discharge mold cavity gas and serve as cooling gas flow channels; the clamping device consists of symmetrically arranged first and second clamping blocks, with internal cooling channels, through which cooling gas is precisely input to the vent holes via the first and second cooling gas paths; the rotary positioning mechanism adjusts the mold position via a rotating platform and motor to ensure precise alignment of the vent holes and cooling channels, and can be optionally equipped with a vision positioning system for automated operation. During operation, cooling gas (such as nitrogen) enters the mold cavity through the cooling channels of the clamping device, directly acting on the high-temperature glass product and the mold, rapidly cooling it to prevent the mold core from jamming due to thermal expansion, and then carrying the heat out of the mold cavity. This design fully utilizes the multifunctionality of the vent holes, combined with efficient cooling and precise alignment technology, not only shortening the cooling time but also improving the convenience of demolding operations and product quality. In addition, the clamping part adopts a V-shaped structure to disperse stress and extend the mold life. The overall device has a high degree of automation, which significantly reduces the need for manual intervention and production costs.

[0067] The above are implementation methods provided in conjunction with specific content, and it is not intended that the specific implementation of this application is limited to these descriptions. Any methods or structures that are similar to those of this application, or any technical deductions or substitutions made based on the concept of this application, should be considered within the scope of protection of this application.

Claims

1. A device for preventing jamming of a glass molding die, comprising a clamping device (2) for guiding and fixing the die body (1), characterized in that, The mold body (1) has multiple vent holes (11) connected to its mold cavity on its periphery. The clamping device (2) has a cooling channel (21) that can communicate with the vent holes (11). The cooling channel (21) can be connected to cooling gas and input into the mold cavity of the mold body (1) for rapid cooling and demolding.

2. The anti-jamming device for a glass molding die according to claim 1, characterized in that, The mold body (1) includes an upper mold core (12) and a lower mold core (13) that cooperate to form a mold cavity. A mold core sleeve (14) is sleeved on the outer periphery of the two. A plurality of vent holes (11) are provided on the periphery of the mold core sleeve (14). The clamping device (2) includes a first clamping block (22) and a second clamping block (23) symmetrically arranged on both sides of the mold core sleeve (14). The first clamping block (22) and the second clamping block (23) are respectively provided with cooling channels (21) on the side facing the mold core sleeve (14).

3. The anti-jamming device for a glass molding die according to claim 2, characterized in that, The first clamping block (22) includes a connecting part (221) for fixing to the working platform. The connecting part (221) is provided with multiple connecting holes (2211). One end of the connecting part (221) is provided with a clamping part (222) that can be connected to the mold core sleeve (14). The clamping part (222) is provided with the cooling channel (21). The cooling channel (21) includes a first cooling air passage (211) that runs through both sides of the clamping part (222). The clamping part (222) has multiple second cooling air passages (212) at one end facing the mold core sleeve (14). The second cooling air passages (212) are connected to the first cooling air passages (211), and their end holes can be matched and connected to the exhaust hole (11). The second clamping block (23) is the same as the first clamping block (22).

4. The anti-jamming device for a glass molding die according to claim 3, characterized in that, The first cooling gas passage (211) has cooling connectors (2111) at both ends of the opening for receiving cooling gas.

5. The anti-jamming device for a glass molding die according to claim 3, characterized in that, The end of the clamping part (222) has a V-shaped structure, and the end holes of the multiple second cooling air passages (212) are evenly arranged on both sides of the end of the clamping part (222).

6. A device for preventing jamming of a glass molding die according to any one of claims 1-5, characterized in that, It also includes a rotary positioning mechanism (3), which is located below the clamping device (2) and is used to place and rotate the mold body (1) so that the exhaust hole (11) corresponds to the cooling channel (21).

7. The anti-jamming device for a glass molding die according to claim 6, characterized in that, The rotary positioning mechanism (3) includes a rotary platform (31) for placing the mold body (1), and a rotary motor (32) is connected below the rotary platform (31).

8. The anti-jamming device for a glass molding die according to claim 7, characterized in that, The rotary motor (32) is electrically connected to a vision positioning system.

9. The anti-jamming device for a glass molding die according to claim 1, characterized in that, The cooling gas is one of nitrogen, carbon dioxide, argon, or helium.

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