An extrusion die for a coating machine

Abstract

This utility model belongs to the field of thin film equipment technology, and particularly relates to an extrusion die head for a coating machine, including a first die, a backing plate, a second die, a blocking component, and an adjusting component. A temporary storage cavity is provided on the side of the first die, and the backing plate is installed on this side, having through holes corresponding to the temporary storage cavity and multiple flow channels. The second die is positioned opposite the first die and clamps the backing plate. Multiple blocking components are located in the temporary storage cavity for blocking the flow channels. The adjusting component is installed on the first die and drives the blocking components to open and close the flow channels. An extrusion port is formed between the first and second dies, and the two ends of the flow channels are respectively connected to the temporary storage cavity and the extrusion port. This structure selectively blocks the flow channels to meet the requirements of coating layers of different widths, eliminates the need for a slider, avoids cleaning difficulties and movement obstructions caused by coating liquid seepage, improves equipment reliability and service life, and extends maintenance cycles.

Description

Technical Field

[0001] This utility model belongs to the field of film equipment technology, and in particular relates to an extrusion die head for a coating machine. Background Technology

[0002] In the process of thin film production, a coating machine is often used to coat the coating liquid onto the surface of the film to form a coating layer. For example, in the production of heat insulation film, functional additives such as anti-UV absorbers, infrared reflectors and infrared absorbers are usually added to the coating liquid carrier to form a coating liquid with specific functions. Then, the coating liquid is coated onto the base film by the coating machine.

[0003] In order to adapt to different base films, the extrusion die of a traditional coating machine is usually equipped with a slider for adjusting the width of the extruded coating layer. Since the slider and the extrusion die are usually slidably connected, coating liquid can easily seep into the gap between them. This not only makes subsequent cleaning time-consuming and laborious, but also easily causes some sliding resistance to the slider. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing an extrusion die for a coating machine that enables control over the width of the coating layer extrusion, eliminates the need for a slider, avoids time-consuming and laborious cleaning after long-term use, and eliminates potential sliding resistance to the slider.

[0005] In view of this, the present invention provides an extrusion die for a coating machine, comprising:

[0006] The first mold has a temporary storage cavity on its side;

[0007] A pad is installed on the side of the first mold where a temporary storage cavity is opened, and has an opening corresponding to the temporary storage cavity, and has multiple flow channels on the side away from the first mold;

[0008] The second mold is positioned opposite the first mold on the side where the temporary storage cavity is opened, and cooperates with the first mold to clamp the pad;

[0009] Multiple blocking components are installed in the temporary storage cavity and are used to block multiple flow channels respectively;

[0010] Adjustment components are installed on the first mold and are used to drive the blocking components to open or close multiple flow channels respectively;

[0011] The first mold and the second mold form an extrusion port, and the two ends of the multiple flow channels are respectively connected to the temporary storage cavity and the extrusion port.

[0012] In the above technical solution, further:

[0013] The surface of the pad is provided with multiple partition blocks to form multiple flow channels, and the multiple flow channels include a central flow channel and multiple sub-flow channels located on both sides of the central flow channel respectively;

[0014] The separator is triangular in shape along the direction of the thickness of the first mold, with one vertex of the triangle pointing towards the extrusion port.

[0015] In the above technical solution, further:

[0016] The blocking component includes a sealing block and a push rod, and the first mold has an insertion hole for the push rod to extend out of the first mold;

[0017] The sealing block and the adjusting component are respectively connected to both ends of the push rod. The sealing block is used to seal the sub-channel, while the adjusting component is used to push the push rod to move along the insertion hole to adjust the sealing block to open or close the sub-channel.

[0018] In the above technical solution, further:

[0019] The push rod is tilted towards the second mold side.

[0020] In the above technical solution, further:

[0021] The adjusting component includes a base mounted on the first mold, a push block connected to the end of the push rod away from the sealing block, and a spring mounted between the base and the push block, with the spring sleeved on the surface of the push rod, and the push rod passing through the base and slidably connected thereto.

[0022] The first mold has a drive component mounted on its side, which is used to abut against the push block and push the push block towards the base while compressing the spring or releasing the abutment against the push block.

[0023] In the above technical solution, further:

[0024] The first mold has a storage cavity and multiple liquid inlets connecting the storage cavity and the temporary storage cavity;

[0025] The storage chamber is equipped with an opening and closing device for fully opening, closing or partially opening the liquid inlet, and a cover for forming the storage chamber, with a liquid filling port on the cover.

[0026] In the above technical solution, the opening and closing components further include:

[0027] The rotating shaft has one end rotatably connected to the inner wall of the storage cavity, and the other end passes through the first mold and extends out of the outer surface of the first mold.

[0028] A knob is mounted on one end of the rotating shaft that extends beyond the outer surface of the first mold.

[0029] The column is fitted onto the rotating shaft, and its radial surface has an arc-shaped groove corresponding to the liquid inlet.

[0030] A sealing gasket is installed on the inner wall of the storage cavity located at the liquid inlet, and a through hole is opened corresponding to the liquid inlet;

[0031] The arc-shaped groove is formed along the circumference of the radial surface of the column.

[0032] In the above technical solution, further:

[0033] The knob has a first mark on the circumference of the side away from the rotating shaft, corresponding to the liquid inlet being fully open, closed, and partially open, and a second mark is correspondingly provided on the surface of the first mold, and the second mark is an indicator arrow.

[0034] The beneficial effects of this utility model are as follows:

[0035] 1. By employing multiple flow channels and selectively blocking them with plugging components, the coating layer requirements for different widths can be met. Furthermore, the slider is eliminated, avoiding the difficulties in later cleaning caused by coating liquid seepage and the potential movement obstruction of the slider after long-term use. This improves the reliability and service life of the coating machine and extends the maintenance cycle.

[0036] 2. By arranging the partition blocks forming multiple flow channels in a triangular shape, with one vertex of the triangle facing the direction of the outlet, the impact of the partition block arrangement on the continuity of the coating layer is minimized. Since the partition block at the outlet is the vertex of the triangle, the gap between the multiple sections of coating layer discharged from the multiple flow channels can be ignored, thereby ensuring the integrity of the coating layer.

[0037] 3. By using a push rod to push the sealing block set in the temporary storage cavity to selectively seal multiple flow channels, the convenience of adjusting the opening or closing of multiple flow channels can be improved. Furthermore, by tilting the push rod towards the second mold side, the push rod not only abuts the sealing block against the flow channel opened on the pad, but also abuts the sealing block against the second mold used to form one side of the flow channel, thereby effectively ensuring the sealing effect of the flow channel.

[0038] 4. By setting up a storage chamber and controlling the opening and closing of the storage chamber and the temporary storage chamber through the opening and closing device, it is possible to supply liquid through a single liquid inlet while supplying liquid through multiple liquid inlets, so that the storage chamber can supply liquid to the temporary storage chamber. This ensures the uniformity of liquid supply and avoids insufficient coating liquid in the early stage of coating when the liquid supply point is far away. Furthermore, the selective opening and closing of multiple liquid inlets by the opening and closing device can adapt to selective blockage of multiple flow channels, improving adaptability. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of this utility model;

[0040] Figure 2This is an exploded view of the present invention;

[0041] Figure 3 This is a top view of the present invention;

[0042] Figure 4 This is a utility model Figure 3 Sectional view at point AA;

[0043] Figure 5 This is a utility model Figure 4 Enlarged view of point B in the middle;

[0044] Figure 6 This is a utility model Figure 3 Sectional view at CC;

[0045] Figure 7 This is a utility model Figure 3 Sectional view at point DD;

[0046] The markings in the diagram represent: 1. First mold; 2. Temporary storage cavity; 3. Pad; 4. Opening; 5. Flow channel; 50. Intermediate flow channel; 51. Sub-flow channel; 6. Second mold; 7. Blocking component; 70. Sealing block; 71. Push rod; 72. Insertion hole; 8. Adjusting component; 80. Base; 81. Push block; 82. Spring; 9. Extrusion port; 10. Divider block; 11. Storage cavity; 12. Liquid inlet; 13. Opening and closing component; 130. Rotating shaft; 131. Knob; 132. Column; 133. Arc groove; 134. Sealing gasket; 135. Through hole; 136. First mark; 137. Second mark; 14. Cap; 15. Liquid filling port. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0048] Example 1:

[0049] This embodiment provides an extrusion die for a coating machine, including:

[0050] The first mold 1 has a temporary storage cavity 2 on its side;

[0051] The pad 3 is installed on the side of the first mold 1 where the temporary storage cavity 2 is opened, and has an opening 4 corresponding to the temporary storage cavity 2, and has multiple flow channels 5 on the side away from the first mold 1;

[0052] The second mold 6 is positioned opposite the first mold 1 on the side where the temporary storage cavity 2 is opened, and cooperates with the first mold 1 to clamp the pad 3;

[0053] Multiple blocking components 7 are installed in the temporary storage cavity 2 and are used to block multiple flow channels 5 respectively;

[0054] Adjustment component 8 is installed on the first mold 1 and is used to drive the blocking component 7 to open or close multiple flow channels 5 respectively;

[0055] Among them, an extrusion port 9 is formed between the first mold 1 and the second mold 6, and the two ends of the multiple flow channels 5 are respectively connected to the temporary storage cavity 2 and the extrusion port 9.

[0056] As can be seen from this embodiment, by using multiple flow channels 5 and selectively blocking the multiple flow channels 5 through the blocking component 7, the coating layer requirements at different widths can be met. Furthermore, the slider is eliminated, avoiding the difficulties in later cleaning caused by the seepage of coating liquid and the potential movement obstruction of the slider after long-term use. This improves the reliability and service life of the coating machine and extends the maintenance cycle.

[0057] Example 2:

[0058] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0059] The surface of the pad 3 is provided with a plurality of partition blocks 10 for forming a plurality of flow channels 5, and the plurality of flow channels 5 include a central flow channel 50 and a plurality of sub-flow channels 51 located on both sides of the central flow channel 50 respectively;

[0060] The separator 10 is triangular in shape along the direction of the thickness of the first mold 1, with one vertex of the triangle facing the direction of the extrusion port 9; and the intermediate flow channel 50 is centered relative to the first mold 1 and the second mold 6.

[0061] Meanwhile, the separator block 10 and the pad plate 3 can adopt an integrated structure, that is, multiple flow channels 5 can be directly processed on the pad plate 3. The width of the coating layer extruded by the multiple sub-flow channels 51 located on one side of the middle flow channel 50 can be different, but it must be symmetrical and the same with respect to the middle flow channel 50. For example, the width of the coating layer extruded by the multiple sub-flow channels 51 located on one side of the middle flow channel 50 must be the same as the width of the coating layer extruded by the multiple sub-flow channels 51 located on the other side of the middle flow channel 50.

[0062] As can be seen from this embodiment, by forming the partition block 10 of multiple flow channels 5 into a triangle, with one vertex of the triangle facing the direction of the outlet, the influence of the partition block 10 on the continuity of the coating layer is minimized. Since the partition block 10 at the outlet is the vertex of the triangle, the gap between the multiple sections of coating layer discharged from the multiple flow channels 5 can be ignored, thereby ensuring the integrity of the coating layer.

[0063] By setting the intermediate flow channel 50, the minimum applicable coating layer extrusion width of the coating machine can be determined. The multiple sub-flow channels 51 are symmetrical and identical with respect to the intermediate flow channel 50. That is, when adjusting the coating layer extrusion width, the sub-flow channels 51 located at opposite positions on both sides of the intermediate flow channel 50 need to be opened or closed simultaneously. With the intermediate flow channel 50 centered with respect to the first mold 1 and the second mold 6, it is easy to align the film to be coated with the extrusion die head, and then align the film with the extruded coating layer, reducing calibration time and improving convenience and coating accuracy.

[0064] Example 3:

[0065] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0066] The plugging component 7 includes a sealing block 70 and a push rod 71, and the first mold 1 has an insertion hole 72 for the push rod 71 to extend out of the first mold 1;

[0067] The sealing block 70 and the adjusting member 8 are respectively connected to the two ends of the push rod 71. The sealing block 70 is used to seal the sub-flow channel 51, while the adjusting member 8 is used to push the push rod 71 to move along the insertion hole 72 to adjust the sealing block 70 to open or close the sub-flow channel 51.

[0068] As can be seen from this embodiment, by using push rod 71 to push sealing block 70 set in temporary storage cavity 2 to selectively seal multiple flow channels 5, the convenience of adjusting the opening or closing of multiple flow channels 5 can be improved.

[0069] Example 4:

[0070] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0071] The push rod 71 is tilted toward the second mold 6;

[0072] The diameter of the radial surface of the insertion hole 72 is larger than the diameter of the radial surface of the push rod 71, and the push rod 71 is allowed to move axially along the insertion hole 72 in an inclined state.

[0073] As can be seen from this embodiment, by tilting the push rod 71 toward the second mold 6, the push rod 71 not only abuts the sealing block 70 against the flow channel 5 opened on the pad 3, but also abuts the sealing block 70 against the second mold 6 used to form one side of the flow channel 5, thereby effectively ensuring the sealing effect of the flow channel 5 and preventing the coating liquid from seeping out from the closed flow channel 5, which would affect the width of the extruded coating layer.

[0074] Example 5:

[0075] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0076] The adjusting component 8 includes a base 80 mounted on the first mold 1, a push block 81 connected to the end of the push rod 71 away from the sealing block 70, and a spring 82 mounted between the base 80 and the push block 81. The spring 82 is sleeved on the surface of the push rod 71, and the push rod 71 passes through the base 80 and is slidably connected to it.

[0077] The first mold 1 has a drive component installed on its side, which is used to abut against the push block 81 and push the push block 81 towards the base 80 while compressing the spring 82 or releasing the abutment against the push block 81.

[0078] Meanwhile, the driving component can be a cylinder, hydraulic push rod 71 or electric push rod 71 installed on the side of the extrusion die, which is a conventional device. It is common knowledge that it is installed on the side of the extrusion die to realize the controllable pushing of the push block 81, and is well known to those skilled in the art. It will not be described in detail here.

[0079] As can be seen from this embodiment, the stability of the installation and movement of the push rod 71 is improved by setting the base 80. Furthermore, the setting of the push block 81 and the spring 82 facilitates the timely reset of the push block 81, push rod 71, and sealing block 70 under the action of the spring 82 after the driving force is released. The structure is simple and the manufacturing cost is low.

[0080] Example 6:

[0081] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0082] The first mold 1 has a storage cavity 11 and multiple liquid inlets 12 that connect the storage cavity 11 and the temporary storage cavity 2;

[0083] The storage cavity 11 is provided with an opening and closing element 13 for fully opening, closing or partially opening the liquid inlet 12, and a cover 14 for forming the storage cavity 11, and a liquid filling port 15 is provided on the cover 14.

[0084] As can be seen from this embodiment, by setting up the storage cavity 11 and controlling the opening and closing between the storage cavity 11 and the temporary storage cavity 2 through the opening and closing component 13, it is convenient to supply liquid through a single liquid inlet 15 while supplying liquid through multiple liquid inlets 12, so that the storage cavity 11 supplies liquid to the temporary storage cavity 2, ensuring the uniformity of liquid supply and avoiding insufficient coating liquid at the beginning of coating due to distance from the liquid supply point; and the selective opening and closing of multiple liquid inlets 12 by the opening and closing component 13 can adapt to the selective blockage of multiple flow channels 5, improving adaptability.

[0085] Example 7:

[0086] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the opening and closing component 13 includes:

[0087] The rotating shaft 130 has one end rotatably connected to the inner wall of the storage cavity 11, and the other end passes through the first mold 1 and extends out of the outer surface of the first mold 1.

[0088] A knob 131 is mounted on one end of the rotating shaft 130 that extends out of the outer surface of the first mold 1;

[0089] The column 132 is sleeved on the rotating shaft 130, and the radial surface is provided with an arc-shaped groove 133 corresponding to the liquid inlet 12;

[0090] A sealing gasket 134 is installed on the inner wall of the storage cavity 11 located at the liquid inlet 12, and a through hole 135 is provided corresponding to the liquid inlet 12;

[0091] Among them, the arc-shaped groove 133 is opened along the perimeter of the radial surface of the column 132, and can be equal to half the perimeter of the radial surface of the column 132.

[0092] Meanwhile, a flat key can be used to restrict radial rotation between the column 132 and the converter;

[0093] Furthermore, the knob 131 can be replaced with a motor to drive the rotation of the shaft 130 to achieve automation, but the manufacturing cost will increase accordingly. This can be selected according to the needs, and will not be elaborated further in this application.

[0094] As can be seen from this embodiment, by using the knob 131 to rotate the rotating shaft 130, the rotating shaft 130 drives the column 132 to rotate, so that the arc groove 133 is connected to the liquid inlet 12, thereby opening the liquid inlet 12, or closing the liquid inlet 12 by facing the column 132 without the arc groove 133, and the adjustment is convenient;

[0095] The sealing gasket 134 can improve the sealing performance when the inlet 12 is closed, and prevent the coating liquid from seeping into the temporary storage chamber 2 from the inlet 12 when the inlet 12 is closed.

[0096] Furthermore, when the inlet 12 is opened, the coating liquid in the storage chamber 11 can flow into the inlet 12 from both sides of the radial surface of the column 132. When the column 132 rotates at a suitable angle, the inlet 12 can be partially opened, that is, half of the radial surface of the inlet 12 is connected to the arc groove 133, while the other half is closed by the column 132. This achieves partial opening control of the inlet 12, improving flexibility, such as achieving more precise flow and pressure control, adapting to different working conditions, and requiring partial opening between full opening and full closing, thus playing a buffering transition effect.

[0097] Example 8:

[0098] This embodiment provides an extrusion die for a coating machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features:

[0099] The knob 131 has a first mark 136 on the circumference of the side away from the rotating shaft 130, corresponding to the liquid inlet 12 being fully open, closed, and partially open, and a second mark 137 is correspondingly provided on the surface of the first mold 1, and the second mark 137 is an indicator arrow.

[0100] As can be seen from this embodiment, by setting the first identifier 136 and the second identifier 137, the accuracy and convenience of adjusting the liquid inlet 12 to be fully open, closed, and partially open can be improved.

[0101] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An extrusion die of a coater, characterized by, include: The first mold (1) has a temporary storage cavity (2) on its side. The pad (3) is installed on the side of the first mold (1) where the temporary storage cavity (2) is opened, and has an opening (4) corresponding to the temporary storage cavity (2), and has multiple flow channels (5) on the side away from the first mold (1). The second mold (6) is positioned opposite to the first mold (1) on the side where the temporary storage cavity (2) is opened, and cooperates with the first mold (1) to clamp the pad (3); Multiple blocking components (7) are installed in the temporary storage cavity (2) and are used to block multiple flow channels (5) respectively; Adjustment component (8) is installed on the first mold (1) and is used to drive the blocking component (7) to open or close multiple flow channels (5); An extrusion port (9) is formed between the first mold (1) and the second mold (6), and the two ends of the multiple flow channels (5) are respectively connected to the temporary storage cavity (2) and the extrusion port (9).

2. The extrusion die of the coating machine according to claim 1, characterized in that: The surface of the pad (3) is provided with a plurality of partition blocks (10) for forming a plurality of flow channels (5), and the plurality of flow channels (5) include a central flow channel (50) and a plurality of sub-flow channels (51) located on both sides of the central flow channel (50). The separator (10) is triangular in the direction of the thickness of the first mold (1) and one end of the triangle faces the extrusion port (9).

3. The extrusion die of the coating machine according to claim 1, characterized in that: The plugging component (7) includes a sealing block (70) and a push rod (71), and the first mold (1) has an insertion hole (72) for the push rod (71) to extend out of the first mold (1). The sealing block (70) and the adjusting member (8) are respectively connected to the two ends of the push rod (71). The sealing block (70) is used to seal the sub-channel (51), while the adjusting member (8) is used to push the push rod (71) to move along the insertion hole (72) to adjust the sealing block (70) to open or close the sub-channel (51).

4. The extrusion die of the coating machine according to claim 3, characterized in that: The push rod (71) is inclined toward the second mold (6).

5. The extrusion die of the coating machine according to claim 3, characterized in that: The adjusting component (8) includes a base (80) mounted on the first mold (1), a push block (81) connected to the end of the push rod (71) away from the sealing block (70), and a spring (82) mounted between the base (80) and the push block (81). The spring (82) is sleeved on the surface of the push rod (71), and the push rod (71) passes through the base (80) and is slidably connected to it. The first mold (1) has a drive component installed on its side, which is used to abut against the push block (81) and push the push block (81) towards the base (80) while compressing the spring (82) or releasing the abutment against the push block (81).

6. The extrusion die of the coating machine according to claim 1, characterized in that: The first mold (1) has a storage cavity (11) and multiple liquid inlets (12) that connect the storage cavity (11) and the temporary storage cavity (2). The storage cavity (11) is provided with an opening and closing element (13) for fully opening, closing or partially opening the liquid inlet (12) and a cover (14) for forming the storage cavity (11), and a liquid filling port (15) is opened on the cover (14).

7. The extrusion die of a coater according to claim 6, characterized in that The opening and closing element (13) includes: The rotating shaft (130) is rotatably connected at one end to the inner wall of the storage cavity (11), and at the other end it passes through the first mold (1) and extends out of the outer surface of the first mold (1); A knob (131) is mounted on one end of the rotating shaft (130) that extends out of the outer surface of the first mold (1); The column (132) is sleeved on the rotating shaft (130), and the radial surface is provided with an arc groove (133) corresponding to the liquid inlet (12). A sealing gasket (134) is installed on the inner wall of the storage cavity (11) located at the liquid inlet (12), and a through hole (135) is opened corresponding to the liquid inlet (12). The arc-shaped groove (133) is formed along the circumferential direction of the radial surface of the column (132).

8. The extrusion die of the coating machine according to claim 7, characterized in that: The knob (131) has a first mark (136) on the circumference of the side away from the rotating shaft (130) corresponding to the liquid inlet (12) being fully open, closed and partially open, and a second mark (137) is correspondingly provided on the surface of the first mold (1), and the second mark (137) is an indicator arrow.

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