Compression molding system

Abstract

The utility model belongs to the technical field of compression molding, and particularly relates to a compression molding system which comprises a molding press, a steam generator and a compressed air supply device, the molding press is provided with a mold for molding, a heating channel and a cooling channel are arranged in the mold, and the steam generator is connected to the heating channel. The compressed air supply device is connected to the cooling channel and used for supplying steam to the heating channel, and the compressed air supply device is connected to the cooling channel and used for supplying compressed air to the cooling channel. By adopting the compressed air supply device in the original workshop as the air source, the air cooling equipment is prevented from being additionally arranged to supply the air flow for cooling, so that the existing resources can be fully utilized, the manufacturing cost is reduced, and meanwhile, compared with oil cooling and water cooling, the effect of reducing the manufacturing cost is also achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molding pressing, and particularly relates to a molding pressing system. Background Art

[0002] Molding pressing is a molding process in which materials are placed in a heated mold cavity, then the mold is closed and pressurized to form the materials, and the materials are cured by cooling temperature. It is widely used in the processing and manufacturing of various materials and plays an important role in various fields.

[0003] The traditional methods for heating molds in molding pressing usually include oil heating, water heating, and steam heating, and the methods for cooling molds usually also include oil cooling, water cooling, and air cooling. When using oil and water for heating and cooling, waste liquid and waste water are usually easily generated, which is not conducive to environmental protection. The traditional air cooling usually requires additional air cooling equipment to generate the air flow for cooling, and the manufacturing cost is relatively high, so it needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide a molding pressing system for solving the above-mentioned existing technical problems, achieving the effect of reducing the manufacturing cost of mold air cooling.

[0005] In view of this, the utility model provides a molding pressing system, including:

[0006] A molding press, which is equipped with a mold for molding, and heating channels and cooling channels are arranged in the mold;

[0007] A steam generator, which is connected to the heating channels and is used to supply steam to the heating channels;

[0008] A compressed air supply device, which is connected to the cooling channels and is used to supply compressed air to the cooling channels.

[0009] In the above technical solution, further:

[0010] The mold includes an upper mold and a lower mold, the lower mold is provided with a cavity, the upper mold is provided with a core matching the cavity, and both are provided with heating channels and cooling channels;

[0011] Wherein, an ejection mechanism for product demolding is arranged in the cavity, and the ejection mechanism is driven by the compressed air supply device.

[0012] In the above technical solution, further:

[0013] The lower mold is provided with an installation hole for installing the ejection mechanism, and both ends of the installation hole are respectively communicated with the cavity and the cooling channels;

[0014] Wherein, a valve is installed on one side of the cooling channels where the compressed air outlet is located.

[0015] In the above technical solution, further, the ejection mechanism includes:

[0016] A sleeve, connected to the inner wall of the mounting hole;

[0017] A ejector pin, slidably connected inside the sleeve;

[0018] A limiting structure, located between the ejector pin and the sleeve, and used to limit the axial movement range of the ejector pin.

[0019] In the above technical solution, further:

[0020] The limiting structure includes a chute opened on the inner wall of the sleeve and a slider provided on the surface of the ejector pin and slidably connected to the chute;

[0021] Wherein, the chute is axially opened.

[0022] In the above technical solution, further, the ejection mechanism further includes:

[0023] An annular protrusion, connected to the side of the ejector pin close to the cavity;

[0024] Wherein, there is a gap between one end of the sleeve close to the cavity and the surface of the cavity, and the gap is adapted to the annular protrusion and is used for the smooth transition between the surface of the annular protrusion and the inner wall of the cavity.

[0025] In the above technical solution, further, the ejection mechanism further includes:

[0026] A sealing washer, sleeved on the ejector pin, connected to the annular protrusion, and located between the annular protrusion and the sleeve.

[0027] The beneficial effects of the present utility model are:

[0028] 1. By using the existing compressed air supply device in the workshop as the air source, it is avoided to additionally set up an air cooling device to supply the airflow for cooling. Therefore, the existing resources can be fully utilized, the manufacturing cost can be reduced, and at the same time, compared with oil cooling and water cooling, it also has the effect of reducing the manufacturing cost.

[0029] 2. By using the compressed air supply device, while cooling the mold, it can also drive the ejection mechanism to demold, further simplifying the structure and reducing the manufacturing cost.

[0030] 3. By using the pressure difference between the cooling channel and the cavity to control the ejection of the ejection mechanism, the structure is simple and no additional driving force needs to be set, further simplifying the structure and reducing the manufacturing cost. Description of the Drawings

[0031] Figure 1 is a schematic diagram of the mold press of the present utility model;

[0032] Figure 2 is a schematic structural view of the present utility model;

[0033] Figure 3 is the present utility model Figure 2 a cross-sectional view taken along line A-A in;

[0034] Figure 4 is the present utility model Figure 3 an enlarged view of position B in;

[0035] Figure 5 is a schematic structural view of the ejection mechanism of the present utility model;

[0036] The reference numerals in the figure denote: 1, a molding press; 2, a mold; 20, an upper mold; 21, a lower mold; 22, a cavity; 23, a core; 24, a mounting hole; 3, a heating channel; 4, a cooling channel; 5, a steam generator; 6, a compressed air supply device; 7, an ejection mechanism; 70, a sleeve; 71, an ejector pin; 72, a limiting structure; 720, a chute; 721, a slider; 73, an annular protrusion; 74, a gap; 75, a sealing gasket; 8, a valve. Specific Embodiments

[0037] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0038] Embodiment 1:

[0039] This embodiment provides a compression molding system, including:

[0040] A molding press 1, installed with a mold 2 for molding, and a heating channel 3 and a cooling channel 4 are provided in the mold 2;

[0041] A steam generator 5, connected to the heating channel 3 and used to supply steam to the heating channel 3;

[0042] A compressed air supply device 6, connected to the cooling channel 4 and used to supply compressed air to the cooling channel 4;

[0043] Among them, the compressed air supply device 6 (i.e., the compressed air system) is a device commonly found in existing workshops, which is mainly used to supply equipment such as cylinders and air guns. It usually includes a compressor, a gas storage tank, a dryer, a filter, etc. The compressor compresses air and stores it in the gas storage tank, and transports it to each use point through a pipeline system to provide power for equipment such as cylinders and air guns. The specific structures of it, the molding press 1, and the steam generator 5 are all prior arts and will not be elaborated here.

[0044] As can be seen from this embodiment, by using the compressed air supply device 6 in the original workshop as the air source, it is possible to avoid additionally setting up air-cooling equipment to supply the airflow for cooling. Therefore, existing resources can be fully utilized, the manufacturing cost can be reduced, and at the same time, compared with oil cooling and water cooling, it also has the effect of reducing the manufacturing cost.

[0045] Embodiment 2:

[0046] This embodiment provides a molding system, which, in addition to including the technical solutions of the above embodiment, further has the following technical features:

[0047] The mold 2 includes an upper mold 20 and a lower mold 21. The lower mold 21 is provided with a cavity 22, and the upper mold 20 is provided with a core 23 adapted to the cavity 22. Both are provided with a heating channel 3 and a cooling channel 4;

[0048] Among them, an ejection mechanism 7 for product demolding is arranged in the cavity 22, and the ejection mechanism 7 is driven by the compressed air supply device 6.

[0049] As can be seen from this embodiment, by using the compressed air supply device 6, while cooling the mold 2, it can also drive the ejection mechanism 7 to demold, further simplifying the structure of the ejection mechanism 7 and further achieving the effect of reducing the manufacturing cost.

[0050] Embodiment 3:

[0051] This embodiment provides a molding system, which, in addition to including the technical solutions of the above embodiment, further has the following technical features:

[0052] The lower mold 21 is provided with a mounting hole 24 for mounting the ejection mechanism 7, and both ends of the mounting hole 24 are respectively communicated with the cavity 22 and the cooling channel 4;

[0053] Among them, a valve 8 is installed on one side of the cooling channel 4 where the compressed air outlet is located;

[0054] At the same time, the valve 8 is an electromagnetic valve, that is, it has the effect of remote and automatic control.

[0055] It can be seen from this embodiment that by using the pressure difference between the cooling channel 4 and the cavity 22 to control the ejection of the ejection mechanism 7, the structure is simple and no additional driving force needs to be set, further simplifying the structure and reducing the manufacturing cost;

[0056] Specifically, when cooling the mold 2, since the air flow in the cooling channel 4 has a flow rate and the temperature in the cavity 22 is relatively high, the pressure in the cavity 22 will be greater than the pressure in the cooling channel 4, thus restricting the ejection of the ejection mechanism 7; after cooling is completed, the valve 8 is closed, and by increasing the pressure in the cooling channel 4, and at this time the temperature in the cavity 22 is relatively low, it is easy to make the pressure in the cooling channel 4 greater than the pressure in the cavity 22, and then eject the ejection mechanism 7 to complete demolding;

[0057] Moreover, the pressure difference gradually decreases and then increases in the reverse direction, so it has an adaptive effect. When the adhesion force between each product and the cavity 22 varies due to various factors (such as the amount of mold release agent, the properties of the product material, the mold temperature, etc.), it can flexibly adapt to this change, provide sufficient demolding force, and avoid the product being unable to be demolded due to too small demolding force or being damaged due to too large demolding force;

[0058] Embodiment 4:

[0059] This embodiment provides a compression molding system. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The ejection mechanism 7 includes:

[0060] A sleeve 70, connected to the inner wall of the mounting hole 24;

[0061] An ejector pin 71, slidably connected within the sleeve 70;

[0062] A limiting structure 72, located between the ejector pin 71 and the sleeve 70 and used to limit the axial movement range of the ejector pin 71;

[0063] Among them, the sleeve 70 is in interference fit with the inner wall of the mounting hole 24.

[0064] It can be seen from this embodiment that by using the sleeve 70, the machining accuracy of the inner wall of the mounting hole 24 can be reduced. That is, by finely machining the inner wall of the sleeve 70 and the surface of the ejector pin 71, the frictional resistance between the two is reduced, facilitating the ejection and reset of the ejector pin 71;

[0065] At the same time, the maintenance cost can be reduced. When the ejector pin 71 and the sleeve 70 are worn, it is not necessary to replace the mold 2 itself;

[0066] And the limiting structure 72 can prevent the ejector pin 71 from slipping off and extend the service life.

[0067] Compared with the traditional ejection mechanism 7 with a reset effect (such as a spring), when the mold is closed, the spring contracts due to the extrusion of the upper and lower molds 21. However, at this time, the spring has elastic potential energy. When the material in the cavity 22 is heated and softened, the spring will push the ejection mechanism 7 into the product, resulting in imprints on the product surface. In this application, a ejector pin 71 is adopted, and the ejector pin 71 is driven by means of a pressure difference. When heated and softened, the ejector pin 71 will not sink into the product, which can eliminate the imprints and ensure the product quality.

[0068] Embodiment 5:

[0069] This embodiment provides a compression molding system. In addition to including the technical solutions of the above embodiments, it also has the following technical features:

[0070] The limiting structure 72 includes a chute 720 opened on the inner wall of the sleeve 70 and a slider 721 provided on the surface of the ejector pin 71 and slidably connected to the chute 720;

[0071] Among them, the chute 720 is axially opened, and both the chute 720 and the slider 721 are four in number, and are arranged at equal circumferential intervals.

[0072] It can be seen from this embodiment that by adopting the arrangement of the chute 720 and the slider 721, the structure is simple. By setting both of them to four and arranging them at equal circumferential intervals, the structural stability during sliding can be effectively improved.

[0073] Embodiment 6:

[0074] This embodiment provides a compression molding system. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The ejection mechanism 7 further includes:

[0075] An annular protrusion 73, connected to the side of the ejector pin 71 close to the cavity 22;

[0076] Among them, there is a gap 74 between one end of the sleeve 70 close to the cavity 22 and the surface of the cavity 22, and the gap 74 is adapted to the annular protrusion 73 and is used for the smooth transition between the surface of the annular protrusion 73 and the inner wall of the cavity 22.

[0077] It can be seen from this embodiment that by making a smooth transition between the annular protrusion 73 and the inner wall of the cavity 22, it is convenient to ensure the flatness of the inner wall of the cavity 22, ensure the product quality, and avoid obvious imprints on the product due to the setting of the ejector pin 71.

[0078] Embodiment 7:

[0079] This embodiment provides a compression molding system. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The ejection mechanism 7 further includes:

[0080] A sealing washer 75 is sleeved on the ejector pin 71, connected to the annular protrusion 73, and located between the annular protrusion 73 and the sleeve 70;

[0081] Among them, an interference fit is adopted between the sealing washer 75 and the ejector pin 71, and a high-temperature resistant rubber material is used.

[0082] It can be seen from this embodiment that by setting the sealing washer 75, the air leakage problem between the ejector rod and the sleeve 70 is eliminated, the pressure difference between the cavity 22 and the cooling channel 4 is ensured to be stable, and the stability of the ejection mechanism 7 for demolding the product is ensured.

[0083] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them belong to the protection scope of the present application.

Claims

1. A compression molding system, characterized in that: include: A molding machine (1) is provided with a mold (2) for molding, and a heating channel (3) and a cooling channel (4) are provided in the mold (2); A steam generator (5) connected to the heating channel (3) and used to supply steam to the heating channel (3); A compressed air supply device (6) is connected to the cooling channel (4) and is used to supply compressed air to the cooling channel (4).

2. The compression molding system according to claim 1, characterized in that: The mold (2) comprises an upper mold (20) and a lower mold (21), wherein the lower mold (21) is provided with a mold cavity (22), and the upper mold (20) is provided with a mold core (23) adapted to the mold cavity (22), and both are provided with the heating channel (3) and the cooling channel (4); Wherein, an ejection mechanism (7) for demoulding the product is arranged in the mold cavity (22), and the ejection mechanism (7) is driven by a compressed air supply device (6).

3. The compression molding system according to claim 2, characterized in that: The lower mold (21) is provided with a mounting hole (24) for mounting an ejection mechanism (7), and two ends of the mounting hole (24) are respectively connected to the mold cavity (22) and the cooling channel (4); Wherein, a valve (8) is installed on one side of the cooling channel (4) located at the compressed air outlet.

4. The compression molding system according to claim 3, characterized in that: The ejection mechanism (7) comprises: A sleeve (70) connected to the inner wall of the mounting hole (24); A top column (71) is slidably connected in the sleeve (70); The limiting structure (72) is located between the top column (71) and the sleeve (70) and is used to limit the axial movement range of the top column (71).

5. The compression molding system according to claim 4, characterized in that: The limiting structure (72) comprises a slide groove (720) provided on the inner wall of the sleeve (70) and a sliding block (721) provided on the surface of the top column (71) and slidably connected to the slide groove (720); Wherein, the slide groove (720) is opened axially.

6. The compression molding system according to claim 4, characterized in that: The ejection mechanism (7) further comprises: An annular protrusion (73) connected to a side of the top column (71) close to the mold cavity (22); A gap (74) is left between the end of the sleeve (70) close to the cavity (22) and the surface of the cavity (22), and the gap (74) is adapted to the annular protrusion (73) and is used for a smooth transition between the surface of the annular protrusion (73) and the inner wall of the cavity (22).

7. The compression molding system according to claim 6, characterized in that: The ejection mechanism (7) further comprises: The sealing gasket (75) is sleeved on the top column (71), connected to the annular protrusion (73), and located between the annular protrusion (73) and the sleeve (70).

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