Carbon-carbon sheet rapid flatness detection device and its working method

Abstract

The present invention belongs to the field of detection technology, and particularly relates to a rapid flatness detection device for carbon-carbon plates and its working method. The rapid flatness detection device for carbon-carbon plates includes: a detection mechanism and a driving mechanism. The driving mechanism drives the detection mechanism to move along the surface of the carbon-carbon plate, and the detection mechanism includes a plurality of detection components arranged in a matrix; the detection component includes: a housing, which is provided with a resin chamber and a pressure chamber therein; and a detection head, the upper end of which extends into the resin chamber, the lower end of which abuts against the surface of the carbon-carbon plate to be detected, and the middle part is used to adjust the glue injection port of the resin chamber and the exhaust port of the pressure chamber; the rapid flatness detection device for carbon-carbon plates can not only detect the depression on the surface of the carbon-carbon plate through three position states of the detection head, but also repair the depressions that can be repaired during the detection process and distinguish the depressions that cannot be repaired.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and particularly relates to measuring the irregularity of a surface, and more particularly to a rapid flatness detection device for carbon-carbon plates and its working method. Background Art

[0002] Carbon-carbon plates are a composite material composed of carbon fibers and a carbon-based matrix, and have excellent mechanical properties, high-temperature stability, corrosion resistance, etc., and are widely used in the fields of aviation, aerospace, automotive, electronics, etc.

[0003] The existing production method of carbon-carbon plates usually adopts the RTM (Resin Transfer Molding) method, that is, a dry carbon fiber cloth is placed in a mold, and then resin is pressed into the carbon fiber layer through a resin injection system, and finally cured and formed.

[0004] Since the carbon fiber cloth is woven from carbon fiber yarns, there will be concave and convex textures on its surface; in the related art, after the resin is pressed into the carbon fiber yarns, there will occasionally be a situation where the resin does not fill the concave and convex textures, resulting in depressions on the surface of the carbon-carbon plates.

[0005] Therefore, it is necessary to design a rapid flatness detection device for carbon-carbon plates and its working method to detect depressions on the surface of the carbon-carbon plates after gluing.

[0006] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as information of the prior art. Summary of the Invention

[0007] The embodiments of the present disclosure at least provide a rapid flatness detection device for carbon-carbon plates and its working method.

[0008] In a first aspect, the embodiments of the present disclosure provide a rapid flatness detection device for carbon-carbon plates, including: a detection mechanism and a driving mechanism, the driving mechanism drives the detection mechanism to move along the surface of the carbon-carbon plate, and the detection mechanism includes a plurality of detection components arranged in a matrix; the detection component includes: a housing, in which a resin chamber and a pressure chamber are provided; and a detection head, the upper end of which extends into the resin chamber, the lower end of which abuts against the surface of the carbon-carbon plate to be detected, and the middle part of which is used to adjust the glue injection port of the resin chamber and the exhaust port of the pressure chamber; wherein during the detection process, the detection head rises and falls following the depression on the surface of the carbon-carbon plate to change the opening size of the exhaust port, and the depression depth data is obtained through the pressure data acquired by the air pressure sensor in the pressure chamber; when the depth of the depression exceeds the repair threshold, the middle part of the detection head opens the glue injection port to inject glue into the depression, and the detection heads in the rear row stir the resin in the depression while injecting glue through the depression; when the depth of the depression exceeds the damage threshold, the middle part of the detection head gets stuck.

[0009] In an alternative embodiment, two partition plates are vertically arranged inside the housing, and the resin chamber is located between the two partition plates; the upper end of the detection head extends between the two partition plates.

[0010] In an alternative embodiment, there is a gap between the top of the partition plate and the top of the housing; a first sliding plate is arranged at the upper end of the detection head; the pressure in the pressure chamber pushes the first sliding plate downward, so that the lower end of the detection head abuts against the surface of the carbon-carbon plate to be detected.

[0011] In an alternative embodiment, there is a gap between the bottom of the partition plate and the bottom of the housing to form the exhaust port; a second sliding plate and a third sliding plate are sequentially arranged on the middle part of the detection head from top to bottom; during the detection process, the third sliding plate of the detection head follows the depression to rise and fall to change the opening size of the exhaust port.

[0012] In an alternative embodiment, there is a gap between the second sliding plate and the third sliding plate to form the glue injection port; when the depth of the depression exceeds the repair threshold, the second sliding plate descends until the glue injection port protrudes from the lower surface of the housing to inject glue.

[0013] In an alternative embodiment, the pressure chamber is connected to a constant-pressure gas source, so that the pressure in the pressure chamber changes with the opening size of the exhaust port.

[0014] In an alternative embodiment, an elastic limiting member is arranged on the upper part of the second sliding plate; when the depth of the depression exceeds the damage threshold, the elastic limiting member is inserted into the exhaust port to clamp the detection head.

[0015] In an alternative embodiment, a through hole for avoiding the detection head is opened at the bottom of the housing.

[0016] Second, the embodiments of the present disclosure also provide a working method for a carbon-carbon plate rapid flatness detection device, including: driving the detection mechanism to move along the surface of the carbon-carbon plate through a driving mechanism for detection; during the detection process, the detection head follows the depression on the surface of the carbon-carbon plate to rise and fall to change the opening size of the exhaust port, and obtains the depression depth data through the pressure data acquired by the air pressure sensor in the pressure chamber; when the depth of the depression exceeds the repair threshold, the middle part of the detection head opens the glue injection port to inject glue into the depression, and the detection heads in the rear row stir the resin in the depression while injecting glue at the depression; when the depth of the depression exceeds the damage threshold, the middle part of the detection head is clamped.

[0017] In an alternative embodiment, the pressure chamber is connected to a constant-pressure gas source, so that the pressure in the pressure chamber changes with the opening size of the exhaust port.

[0018] The beneficial effects of the present invention are that the rapid flatness detection device for carbon-carbon plates can not only detect the depression on the surface of the carbon-carbon plates through three position states of the detection head, but also repair the depressions that can be repaired during the detection process and distinguish the depressions that cannot be repaired.

[0019] Other features and advantages of the present invention will be described in the following specification, and partly will be obvious from the specification, or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification, claims and drawings.

[0020] To make the above objectives, features and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given, and in conjunction with the accompanying drawings, the detailed description is as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 Schematic structural diagram of a rapid flatness detection device for carbon-carbon plates provided by an embodiment of the present disclosure;

[0023] Figure 2 Schematic structural diagram of a detection mechanism provided by an embodiment of the present disclosure;

[0024] Figure 3 Schematic structural diagram of a detection component provided by an embodiment of the present disclosure;

[0025] Figure 4 Schematic structural diagram of the position of the detection head when the depth of a depression does not exceed the repair threshold provided by an embodiment of the present disclosure;

[0026] Figure 5 Schematic structural diagram of the position when the depth of a depression exceeds the repair threshold provided by an embodiment of the present disclosure;

[0027] Figure 6 Schematic structural diagram of the position when the depth of a depression exceeds the damage threshold provided by an embodiment of the present disclosure;

[0028] Figure 7 Schematic structural diagram of an elastic limiting member provided by an embodiment of the present disclosure.

[0029] In the figure:

[0030] Housing 1, resin chamber 11, glue injection port 111, pressure chamber 12, exhaust port 121, through hole 13, partition 14;

[0031] Detection head 2, elastic limiting member 21, spring 211, baffle 222, first slide plate 22, second slide plate 23, third slide plate 24;

[0032] Drive mechanism 3;

[0033] Detection mechanism 4, detection component 41. Specific implementation manner

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, in the drawings, for the purpose of effectively describing the technical content, the thickness of the components may be exaggerated or reduced.

[0036] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0037] As Figures 1 to 6 shown, at least one embodiment provides a rapid flatness detection device for carbon-carbon plates, which includes: a detection mechanism 4 and a drive mechanism 5. The drive mechanism 5 drives the detection mechanism 4 to move along the surface of the carbon-carbon plate, and the detection mechanism 4 includes a plurality of detection components 41 arranged in a matrix.

[0038] Specifically, the detection component includes: a housing 1, in which a resin chamber 11 and a pressure chamber 12 are provided; and a detection head 2, the upper end of which extends into the resin chamber 11, the lower end of which abuts against the surface of the carbon-carbon plate to be detected, and the middle part of which is used to adjust the glue injection port 111 of the resin chamber 11 and the exhaust port 121 of the pressure chamber 12; during the detection process, the detection head 2 rises and falls following the depression on the surface of the carbon-carbon plate to change the opening size of the exhaust port 121, and the depression depth data is obtained through the pressure data acquired by the air pressure sensor in the pressure chamber 12; when the depth of the depression exceeds the repair threshold, the middle part of the detection head 2 opens the glue injection port 111 to inject glue into the depression, and the detection head 2 in the back row stirs the resin in the depression while injecting glue through the depression; when the depth of the depression exceeds the damage threshold, the middle part of the detection head 2 gets stuck.

[0039] In this embodiment, the pressure chamber 12 is connected to a constant pressure gas source. When the detection head 2 moves to the depression, the height of the detection head 2 will decrease, thereby changing the opening size of the exhaust port 121. At this time, the pressure in the pressure chamber 12 will also change accordingly, and the depth of the depression can be reflected through the change in pressure; when the depth of the depression does not exceed the repair threshold, it indicates that the depression at this place can be accepted and does not need to be filled. During this process, only the size of the exhaust port 121 will be changed, and the gas blown out from the exhaust port 121 is used to clean the surface dust of the carbon-carbon plate; when the depth of the depression exceeds the repair threshold, it indicates that the depression at this place needs to be repaired. At this time, the detection head 2 descends until the glue injection port 111 is opened, so as to fill the repair resin into the depression at this place. At this time, the exhaust port 121 is closed; when the depth of the depression exceeds the damage threshold (the damage threshold is greater than the repair threshold), it indicates that the depth of the depression at this place cannot be solved by filling the repair resin. At this time, the height of the detection head 2 drops lower, resulting in the detection head 2 getting stuck; through the three states, not only can the depression on the surface of the carbon-carbon plate be detected, but also the repairable depressions can be repaired, and the non-repairable depressions can be distinguished, making it convenient to repair them through other forms.

[0040] As Figure 4 shown, in some embodiments, two partition plates 14 are vertically arranged in the housing 1, and the resin chamber 11 is between the two partition plates 14; the upper end of the detection head 2 extends between the two partition plates 14.

[0041] In some embodiments, there is a gap between the top of the partition plate 14 and the top of the housing 1; a first sliding plate 22 is arranged at the upper end of the detection head 2; the pressure in the pressure chamber 12 pushes the first sliding plate 22 to move downwards, so that the lower end of the detection head 2 abuts against the surface of the carbon-carbon plate to be detected.

[0042] In this embodiment, the top of the resin chamber 11 communicates with the pressure chamber 12, and the first slide plate 22 of the detection head 2 moves downward under the pressure in the pressure chamber 12 to abut against the surface of the carbon-carbon plate.

[0043] In some embodiments, a gap is left between the bottom of the partition plate 14 and the bottom of the housing 1 to form an exhaust port 121; a second slide plate 23 and a third slide plate 24 are sequentially arranged from top to bottom in the middle of the detection head 2; during the detection process, the third slide plate 24 of the detection head 2 follows the depression to rise and fall to change the opening size of the exhaust port 121.

[0044] In this embodiment, when the third slide plate 24 adjusts the opening size of the exhaust port 121, the injection port 111 of the resin chamber 11 is closed.

[0045] As Figure 5 shown, in some embodiments, a gap is left between the second slide plate 23 and the third slide plate 24 to form an injection port 111; when the depth of the depression exceeds the repair threshold, the second slide plate 23 descends until the injection port 111 protrudes from the lower surface of the housing 1 for injection.

[0046] As Figure 4 shown, in this embodiment, when the depth of the depression does not exceed the repair threshold, the injection port 111 is blocked in the resin chamber 11, and the injection port 111 will only be opened when the depth of the depression exceeds the repair threshold; when the injection port 111 descends, it will pass through the exhaust port 121, so there will be air bubbles in the resin in the resin chamber 11, so it is necessary to use a multi-row detection head 2 to stir the resin in the depression to eliminate the air bubbles.

[0047] As Figure 6 shown, in some embodiments, an elastic limiting member 21 is provided on the upper part of the second slide plate 23; when the depth of the depression exceeds the damage threshold, the elastic limiting member 21 is inserted into the exhaust port 121 to lock the detection head 2.

[0048] As Figure 7 shown, specifically, when the depth of the depression exceeds the damage threshold, the second slide plate 23 descends to a corresponding height so that the elastic limiting member 21 located on the upper part of the second slide plate 23 pops out, and the detection head 2 cannot rise and reset by extending into the exhaust port 121; the elastic limiting member 21 is pushed by a spring 211, and the elastic limiting member 21 abuts against a baffle 222 provided in the second slide plate 23 through an inclined surface. When the elastic limiting member 21 extends out, it pushes the baffle 222 downward to close the injection port 111.

[0049] In some embodiments, a through hole 13 for avoiding the detection head 2 is provided at the bottom of the housing 1.

[0050] At least one embodiment also provides a working method for a rapid flatness detection device of a carbon-carbon plate, which includes: driving a detection mechanism to move along the surface of the carbon-carbon plate through a driving mechanism for detection; during the detection process, the detection head 2 rises and falls following the depression on the surface of the carbon-carbon plate to change the opening size of the exhaust port 121, and obtains the depression depth data through the pressure data obtained by the air pressure sensor in the pressure chamber 12; when the depth of the depression exceeds the repair threshold, the middle part of the detection head 2 opens the glue injection port 111 to inject glue into the depression, and the detection heads 2 in the rear row stir the resin in the depression while injecting glue at the depression; when the depth of the depression exceeds the damage threshold, the middle part of the detection head 2 gets stuck.

[0051] In some embodiments, the pressure chamber 12 is connected to a constant pressure gas source so that the pressure in the pressure chamber 12 changes with the opening size of the exhaust port 121.

[0052] For the specific structure and implementation process of the rapid flatness detection device of the carbon-carbon plate, refer to the relevant discussions in the above embodiments, which will not be elaborated here.

[0053] In summary, through the three position states of the detection head 2, the rapid flatness detection device of the carbon-carbon plate can not only detect the depression on the surface of the carbon-carbon plate, but also repair the depressions that can be repaired during the detection process and distinguish the depressions that cannot be repaired.

[0054] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component can be directly formed on the second component, or a third component can be inserted between the first component and the second component.

[0055] In this article, when an element or layer is referred to as "being located on", "joined to", "connected to", "attached to" or "coupled to" another element or layer, it can be directly located on, joined, connected, attached or coupled to another element or layer, or there may be intermediate elements or layers. On the contrary, when an element is referred to as "directly on another element or layer", "directly joined to", "directly connected to", "directly attached to" or "directly coupled to" another element or layer, there may be no intermediate elements or layers. Other words used to describe the relationship between elements should be interpreted in a similar manner (for example, "between" vs. "directly between", "adjacent" vs. "directly adjacent", etc.). As used herein, the term "and / or" includes any and all combinations of one or more of the related listed items.

[0056] In this document, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." modify the entire list of elements when following a list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0057] The terms used herein are only for describing specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an", and "the" may also be intended to include the plural forms, unless clearly indicated otherwise herein. The terms "comprising", "including", and "having" are inclusive, and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an order of performance. Additional or alternative steps may be employed.

[0058] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific feature, structure, or characteristic after the phrase may be included in at least one embodiment of the present disclosure. Thus, a specific feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other embodiments, aspects, or designs. Instead, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a concrete manner.

[0059] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", and "coupled" shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0060] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply an order or sequence unless explicitly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above may be referred to as the second element, component, region, layer or section.

[0061] Spatially relative terms, such as "inner", "outer", "below", "beneath", "lower", "above", "upper", etc., may be used herein to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are to be interpreted accordingly.

[0062] In the above discussion, unless otherwise specified, when used to describe a numerical value, terms such as "about", "approximately", "substantially", etc. indicate a variation of + / −10% of that value.

[0063] Based on the above inspiration from the ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A carbon-carbon sheet rapid flatness detection device, characterized in that: include: A detection mechanism and a driving mechanism, wherein the driving mechanism drives the detection mechanism to move along the surface of the carbon-carbon plate, and the detection mechanism includes a plurality of detection components arranged in a matrix; The detection component comprises: A housing (1) having a resin chamber (11) and a pressure chamber (12) disposed therein; and The detection head (2) has an upper end extending into the resin chamber (11), a lower end abutting against the surface of the carbon-carbon plate to be detected, and a middle portion used for adjusting the injection port (111) of the resin chamber (11) and the exhaust port (121) of the pressure chamber (12); wherein During the detection process, the detection head (2) follows the rise and fall of the depression on the surface of the carbon-carbon plate to change the opening size of the exhaust port (121), and obtains depression depth data through pressure data obtained by the air pressure sensor in the pressure chamber (12); When the depth of the depression exceeds the repair threshold, the glue injection port (111) is opened in the middle of the detection head (2) to inject glue into the depression, and the detection head (2) located in the rear row stirs the resin in the depression while injecting glue into the depression; When the depth of the depression exceeds a damage threshold, the middle portion of the detection head (2) is stuck; Two partitions (14) are vertically arranged in the housing (1), and the resin chamber (11) is between the two partitions (14); wherein The upper end of the detection head (2) extends between the two partitions (14); A gap is left between the top of the partition (14) and the top of the housing (1); A first slide plate (22) is provided at the upper end of the detection head (2); The pressure chamber (12) pushes the first slide plate (22) downward due to the pressure, so that the lower end of the detection head (2) abuts against the surface of the carbon-carbon plate to be detected.

2. The carbon-carbon sheet rapid flatness detection device according to claim 1, characterized in that: A gap is left between the bottom of the partition plate (14) and the bottom of the housing (1) to form the exhaust port (121); A second slide plate (23) and a third slide plate (24) are arranged in sequence from top to bottom in the middle of the detection head (2); During the detection process, the third slide plate (24) of the detection head (2) rises and falls following the depression to change the opening size of the exhaust port (121).

3. The carbon-carbon sheet rapid flatness detection device according to claim 2, characterized in that: A gap is left between the second slide plate (23) and the third slide plate (24) to form the glue injection port (111); When the depth of the depression exceeds the repair threshold, the second slide plate (23) descends until the glue injection port (111) protrudes from the lower surface of the housing (1) to inject glue.

4. The carbon-carbon sheet rapid flatness detection device according to claim 3, characterized in that: The pressure chamber (12) is connected to a constant pressure gas source so that the pressure in the pressure chamber (12) changes with the opening size of the exhaust port (121).

5. The carbon-carbon sheet rapid flatness detection device according to claim 4, characterized in that: An elastic limiting member (21) is provided on the upper portion of the second sliding plate (23); When the depth of the depression exceeds the damage threshold, the elastic limiting member (21) is inserted into the exhaust port (121) to clamp the detection head (2).

6. The carbon-carbon sheet rapid flatness detection device according to claim 5, characterized in that: The bottom of the housing (1) is provided with a through hole (13) for avoiding the detection head (2).

7. A method for operating the carbon-carbon plate rapid flatness detection device as claimed in claim 1, characterized in that: include: The detection mechanism is driven by the driving mechanism to move along the surface of the carbon-carbon plate for detection; During the detection process, the detection head (2) follows the rise and fall of the depression on the surface of the carbon-carbon plate to change the opening size of the exhaust port (121), and obtains depression depth data through pressure data obtained by the air pressure sensor in the pressure chamber (12); When the depth of the depression exceeds the repair threshold, the glue injection port (111) is opened in the middle of the detection head (2) to inject glue into the depression, and the detection head (2) located in the rear row stirs the resin in the depression while injecting glue into the depression; When the depth of the depression exceeds the damage threshold, the middle part of the detection head (2) is stuck.

8. The working method of the carbon-carbon plate rapid flatness detection device according to claim 7, characterized in that: The pressure chamber (12) is connected to a constant pressure gas source so that the pressure in the pressure chamber (12) changes with the opening size of the exhaust port (121).

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