CN112895273B - Preparation method and forming device of phase-change heat-conducting heat-dissipating film - Google Patents
Preparation method and forming device of phase-change heat-conducting heat-dissipating film Download PDFInfo
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- CN112895273B CN112895273B CN202110076837.4A CN202110076837A CN112895273B CN 112895273 B CN112895273 B CN 112895273B CN 202110076837 A CN202110076837 A CN 202110076837A CN 112895273 B CN112895273 B CN 112895273B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/44—Compression means for making articles of indefinite length
- B29C43/46—Rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/58—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The invention discloses a preparation method and a forming device of a phase-change heat-conduction heat-dissipation film, which comprises a forming table and a film carrier which is arranged on the forming table and moves linearly, wherein the forming table is also provided with an adjusting part which is positioned above the film carrier and is used for adjusting the uniformity of the formed thickness of the film, and the adjusting part receives a phase-change heat-conduction material and uniformly distributes the phase-change heat-conduction material to the inside.
Description
Technical Field
The invention relates to the technical field of film preparation, in particular to a preparation method and a forming device of a phase-change heat-conducting heat-dissipating film.
Background
The phase change heat conduction material is a heat enhancement polymer, is used for reducing the thermal resistance between a power consumption type electronic device and a heat sink connected with the power consumption type electronic device to the minimum, changes the shape along with the temperature change when the phase change heat conduction material is used, absorbs or releases heat in the shape change process, and belongs to a non-conductive material.
Phase change heat conduction material in use, except heat conduction silicone grease type, slice gasket in addition, need not to paint on the product surface when using, the stickness that directly utilizes phase change heat conduction material self is attached and can be used on the product surface, because the heat dissipation demand of different products is different, required phase change heat conduction material's thickness is also different, some products need thinner membranous gasket, and when making the membrane through curtain coating shaping mode, current film forming device is when liquid or molten state material passes through roll body control thickness, only release the material to the film carrier through the hopper, and the thickness of controlling the membrane through roll body or scraper, but each partial thickness of material is inconsistent when passing through roll body or scraper, it is thicker to lead to the partial region thickness when the membrane shaping cuts, and partial region thickness is thinner, influence the production quality of whole body membrane, therefore, need design a phase change heat conduction membrane's preparation method and forming device.
Disclosure of Invention
The invention aims to provide a preparation method and a forming device of a phase-change heat-conducting heat-dissipating film, which solve the problem that the thickness uniformity of each part of a material passing through a roller body is lack of control during film forming of the traditional tape-casting forming device, so that the thickness of each part after the film forming is different, and the production quality of the film is influenced.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
the forming device of the phase-change heat-conducting heat-dissipating film comprises a forming table and a film carrier which is arranged on the forming table and moves linearly, wherein an adjusting part which is positioned above the film carrier and used for adjusting the uniformity of the formed thickness of the film is also arranged on the forming table, the adjusting part receives the phase-change heat-conducting material and uniformly distributes the phase-change heat-conducting material to the inside, and the adjusting part adjusts the size of a path which is formed by tape casting on the film carrier to control the thickness and the uniformity of the formed film of the phase-change heat-conducting material;
the adjusting component comprises a material receiving assembly arranged on the forming table and a uniformity control assembly arranged on the material receiving assembly, the phase change heat conduction materials are stored in the material receiving assembly, the distribution uniformity is adjusted according to the size of a passing path of the uniformity control assembly, and meanwhile, the uniformity control assembly controls the phase change heat conduction materials to keep the distribution uniformity and transport the phase change heat conduction materials to the next procedure for forming through the phase change heat conduction materials to the film carrier.
As a preferable scheme of the present invention, the material receiving assembly includes an inclined plane groove obliquely disposed on the forming table, and a temporary storage channel disposed on the inclined plane groove and used for storing the phase change heat conduction material, and the uniformity control assembly is disposed on the inclined plane groove, two side supports are symmetrically disposed at the top of the inclined plane groove, a distribution adjusting plate is fixedly connected to the two side supports, a circulation distribution adjuster is disposed on the distribution adjusting plate, a hopper slidably connected to the distribution adjusting plate is mounted on the circulation distribution adjuster, and the phase change heat conduction material in the hopper is driven by the circulation distribution adjuster to be uniformly distributed in the inclined plane groove and moves into the temporary storage channel under the action of gravity.
As a preferable scheme of the present invention, the circulation distribution adjuster includes a first connecting shaft and a second connecting shaft sequentially installed on the distribution adjusting plate in an up-down order, and one end of the first connecting shaft is connected with a first driving device, the first connecting shaft is fixedly connected with a rotating disc, the rotating disc is eccentrically provided with a transmission column, the second connecting shaft is rotatably connected with a sector gear, a strip-shaped driving plate is fixedly connected to a center of the sector gear, the strip-shaped driving plate is provided with a strip-shaped driving groove slidably connected with the transmission column, a rack portion engaged with the sector gear is provided at a top of the hopper, and the sector gear drives the strip-shaped driving plate to perform a reciprocating circular motion through the rotating disc, and the sector gear drives the hopper to perform a reciprocating linear motion to uniformly distribute the phase change heat conductive material into the inclined plane groove.
As a preferred scheme of the invention, the temporary storage channel comprises an inclined plane connecting plate fixedly connected to the top of the inclined plane groove and a side plate arranged on one side of the inclined plane connecting plate along a direction perpendicular to the top of the inclined plane connecting plate, a limit screw is arranged on the side plate along a direction perpendicular to the bottom in the inclined plane groove, one end of the limit screw is connected with a second driving device, a sealing plate in sliding connection with the side wall of the side plate is in threaded connection with the limit screw, the sealing plate, the inclined plane connecting plate and the inclined plane groove jointly form a storage space for temporarily storing the phase change heat conduction material, and the closing and opening of the flow path of the phase change heat conduction material are controlled by the sealing plate.
As a preferable scheme of the invention, two linear grooves are symmetrically formed in two inner side walls of the inclined plane groove, a linear driving screw is mounted in one of the linear grooves through a bearing, one end of the linear driving screw is connected with a third driving device, a guide slide bar is fixedly mounted in the other linear groove, a strip-shaped push plate is mounted on the guide slide bar and the linear driving screw together, an arc-shaped scraper abutting against the bottom in the inclined plane groove is fixedly connected to one side of the strip-shaped push plate, and the arc-shaped scraper drives the phase change heat conduction material to flow into the temporary storage channel through the strip-shaped push plate in an auxiliary driving manner and is uniformly distributed.
As a preferable scheme of the present invention, the inclined plane connecting plate is located between the linear groove and the sealing plate, and a shortest distance between the linear groove and the sealing plate is smaller than a sum of a length of the strip-shaped pushing plate and a thickness of the arc-shaped scraper.
As a preferable scheme of the invention, the uniformity control assembly comprises two adjusting grooves symmetrically arranged on the inner side wall of the inclined plane groove, the two adjusting grooves are jointly and slidably connected with a sliding connection seat, one of the sliding connection seats is in threaded connection with a lifting screw rod rotatably connected with the bottom in the adjusting groove, one end of the lifting screw rod is connected with a fourth driving device, a press roller used for limiting the thickness of the phase change heat conduction material passing through is jointly installed between the two sliding connection seats, and the lifting screw rod drives the press roller to adjust the distance between the press roller and the bottom in the inclined plane groove so as to control the film forming thickness of the phase change heat conduction material.
In a preferred embodiment of the present invention, the length of the press roller is greater than the width of the bevel groove, and the shortest distance between the press roller and the bottom of the bevel groove and the shortest distance between the press roller and the film carrier are always equal to each other.
As a preferable scheme of the present invention, an end of the inclined plane groove is arc-shaped, the film carrier is in tangential relation with the arc-shaped part of the inclined plane groove, and an axis of the lifting screw is parallel to a bisector of a radian of the arc-shaped part of the inclined plane groove.
In order to solve the technical problems, the invention further provides the following technical scheme:
a method for preparing a forming device of a heat dissipation film of a phase change heat conduction material comprises the steps of,
s100, sealing the temporary storage channel by using a sealing plate, adjusting the distance between a compression roller and the inner bottom wall of the inclined plane groove according to the production requirement of the film forming thickness, and adding a liquid phase change heat conduction material into the hopper;
s200, starting a first driving device to drive a hopper to reciprocate to adjust the phase change heat conduction materials to be uniformly distributed and stored in a temporary storage channel, and opening a sealing plate to release the phase change heat conduction materials when the stacking thickness of the phase change heat conduction materials is larger than the distance between a compression roller and an inclined plane groove;
s300, the forming thickness of the phase change heat conduction material is controlled by a pressing roller, the thickness of the phase change heat conduction material passing through is secondarily controlled on the film carrier, and meanwhile the phase change heat conduction material is adhered to the film carrier and is conveyed to the next procedure for forming.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the phase change heat conduction material is received by the material receiving assembly, the thickness of the phase change heat conduction material passing through is controlled by adjusting the size of the passing path through the uniformity control assembly so as to control the forming thickness of the film, then the material receiving assembly receives the phase change heat conduction material and simultaneously controls the uniformity of the internal distribution of the phase change heat conduction material, and the distribution thickness of the material is determined according to the size of the passing path on the uniformity control assembly, so that the thicknesses of all parts of the phase change heat conduction material are kept uniform and consistent when the phase change heat conduction material passes through the uniformity control assembly, and the influence on the forming thickness of the film and the production quality of the film are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a forming apparatus for a phase-change heat-conducting heat-dissipating film according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a portion of a bevel groove according to an embodiment of the present invention
Fig. 3 is an enlarged schematic view of a portion a shown in fig. 1 according to an embodiment of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-a forming table; 2-a film carrier; 3-an adjustment member;
301-a material receiving assembly; 302-a uniformity control assembly; 303-inclined plane groove; 304-a temporary storage channel; 305-a side support; 306-a distribution regulating plate; 307-circulation profile adjuster; 308-a hopper; 309-first connecting shaft; 310-a second connection shaft; 311-rotating the disc; 312-a drive post; 313-sector gear; 314-a strip drive board; 315-bar drive slot; 316-rack portion; 317-inclined plane connecting plates; 318-side edge plate; 319-limit screw; 320-a sealing plate; 321-a linear slot; 322-linear drive screw; 323-a guide slide bar; 324-a strip pusher; 325-arc scraper; 326-adjustment groove; 327-sliding connection seat; 328-a lifting screw; 329-press rolls.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 to fig. 3, the invention provides a forming device of a phase-change heat-conducting heat-dissipating film, comprising a forming table 1 and a film carrier 2 arranged on the forming table 1 for linear motion, wherein the forming table 1 is further provided with an adjusting component 3 positioned above the film carrier 2 for adjusting the uniformity of the formed thickness of the film, the adjusting component 3 receives the phase-change heat-conducting material to be uniformly distributed inside, and the adjusting component 3 adjusts the size of a path formed by casting on the film carrier 2 to control the thickness and uniformity of the formed film of the phase-change heat-conducting material,
the adjusting component 3 comprises a material receiving assembly 301 arranged on the forming table 1 and a uniformity control assembly 302 arranged on the material receiving assembly 301, the phase change heat conduction material is stored in the material receiving assembly 301 and is adjusted in distribution uniformity according to the size of a passing path of the uniformity control assembly, and meanwhile, the uniformity control assembly 302 controls the phase change heat conduction material to keep the distribution uniformity and convey the phase change heat conduction material onto the film carrier 2 to the next procedure for forming.
When the phase change heat conduction material is used, the phase change heat conduction material is added into the material receiving assembly 301 for storage when the phase change heat conduction material is in an unformed liquid state or a molten state, and the distribution uniformity in the phase change heat conduction material is adjusted by the material receiving assembly 301 when the phase change heat conduction material is added, so that the thicknesses of all parts are uniform when the phase change heat conduction material passes through the uniformity control assembly 302, and unqualified quality caused by non-uniform thicknesses of all parts during film forming is avoided.
The film carrier 2 moves linearly on the forming table 1, the phase change heat conduction material passing through the uniformity control assembly 302 flows onto the film carrier 2 and adheres to the film carrier 2 to the next process, and the part of the film carrier 2 for bearing the phase change heat conduction material can be polyethylene, polypropylene and the like.
Further, the whole process should keep the phase change heat conduction material in a liquid state or a molten state all the time.
The material receiving assembly 301 comprises an inclined plane groove 303 obliquely arranged on the forming table 1 and a temporary storage channel 304 arranged on the inclined plane groove 303 and used for storing the phase change heat conduction material, the uniformity control assembly 302 is arranged on the inclined plane groove 303, two side supports 305 are symmetrically arranged at the top of the inclined plane groove 303, the two side supports 305 are fixedly connected with a distribution adjusting plate 306 together, a circulation distribution adjuster 307 is arranged on the distribution adjusting plate 306, a hopper 308 slidably connected with the distribution adjusting plate 306 is installed on the circulation distribution adjuster 307, and the phase change heat conduction material in the hopper 308 is driven by the circulation distribution adjuster 307 to be uniformly distributed in the inclined plane groove 303 and moves to the temporary storage channel 304 under the action of gravity.
The phase change heat conduction material received by the material receiving assembly 301 enters from the hopper 308, and the hopper is driven by the circulation distribution adjuster 307 to perform circular linear motion, so that the phase change heat conduction material uniformly falls onto the inclined plane groove 303 and uniformly flows to the temporary storage channel 304 under the self gravity to be stored.
When the thickness of the phase change thermal conductive material stored in the temporary storage channel 304 is larger than the size of the passing path on the uniformity control module 302, the temporary storage channel 304 is opened to release the phase change thermal conductive material to the uniformity control module 302 for passing through, and finally the phase change thermal conductive material falls onto the film carrier 2.
The distribution regulating plate 306 serves to provide an installation space for the circulation distribution regulator 307 while ensuring stability of the circulation distribution regulator 307 and the hopper 308 during movement.
The slope groove 303 is used to provide a flow path for the phase change heat conducting material, and to enable the phase change heat conducting material to move in the slope groove according to its own weight.
The circular distribution regulator 307 comprises a first connecting shaft 309 and a second connecting shaft 310 which are sequentially installed on the distribution regulating plate 306 from top to bottom, one end of the first connecting shaft 309 is connected with a first driving device, a rotating disc 311 is fixedly connected to the first connecting shaft 309, a transmission column 312 is eccentrically arranged on the rotating disc 311, a sector gear 313 is rotatably connected to the second connecting shaft 310, a bar-shaped driving plate 314 is fixedly connected to the center of the circle of the sector gear 313, a bar-shaped driving groove 315 in sliding connection with the transmission column 312 is formed in the bar-shaped driving plate 314, a rack portion 316 meshed with the sector gear 313 is arranged at the top of the hopper 308, the sector gear 313 drives the bar-shaped driving plate 314 to perform reciprocating circular motion through the rotating disc 311, and the sector gear drives the hopper 308 to perform reciprocating linear motion and uniformly distributed phase change to the inclined plane groove 303.
When the cyclic distribution regulator 307 is used, the first driving device is started to drive the first connecting shaft 309 to rotate, the first connecting shaft 309 drives the rotating disc 311 to rotate, so that the transmission column 312 makes a circular motion, meanwhile, the transmission column 312 slides in the strip-shaped driving groove 315, the strip-shaped driving plate 314 makes a circular motion around the second connecting shaft 310 through the driving of the transmission column 312, and meanwhile, the sector gear 313 and the strip-shaped driving plate 314 synchronously rotate.
The sector gear 313 rotates to drive the rack portion 316 engaged with the sector gear to make a linear motion, that is, the hopper 308 makes a linear motion under the driving of the sector gear 313, so that the phase change heat conduction material is uniformly distributed in the inclined plane groove 303.
Secondly, the transmission column 312 and the rotating disc 311 synchronously perform unidirectional circular motion, the bar-shaped driving plate 314 is driven by the transmission column 312 to perform reciprocating rotation around the second connecting shaft 310, when the position of the transmission column 312 rotates to the highest point or the lowest point, the central line of the bar-shaped driving plate 314 is perpendicular to the inclined plane groove 303, when the transmission column 312 rotates 90 degrees around the first connecting shaft 309, the bar-shaped driving plate 314 and the sector gear 313 rotate by the maximum angle, and when the transmission column 312 rotates 90 degrees again, the bar-shaped driving plate 314 and the sector gear 313 reset, so that the sector gear 313 drives the hopper 308 to drive the phase change heat conduction materials to be uniformly distributed in the inclined plane groove 303 in a reciprocating manner.
The temporary storage channel 304 comprises an inclined plane connecting plate 317 fixedly connected to the top of the inclined plane groove 303 and a side plate 318 arranged on one side of the inclined plane connecting plate 317 along the direction perpendicular to the top of the inclined plane connecting plate 317, a limit screw 319 is installed on the side plate 318 along the direction perpendicular to the bottom of the inclined plane groove 303, one end of the limit screw 319 is connected with a second driving device, a sealing plate 320 connected with the side wall of the side plate 318 in a sliding manner is connected onto the limit screw 319 in a threaded manner, and the sealing plate 320, the inclined plane connecting plate 317 and the inclined plane groove 303 jointly form a storage space for temporarily storing the phase change heat conduction material, and the on-off of a flow path of the phase change heat conduction material is controlled through the sealing plate 320.
The temporary storage channel 304 is used for temporarily storing the phase change heat conduction material until the thickness of the phase change heat conduction material is larger than the size of the passing path on the uniformity control assembly 302, a storage space is formed by the sealing plate 320, the inclined plane connecting plate 317 and the inner wall of the inclined plane groove 303, and the path of the phase change heat conduction material flowing to the uniformity control assembly 302 is sealed by the sealing plate 320.
The phase change heat conduction material is uniformly accumulated at the inclined plane groove 303 and the sealing plate 320, when the thickness of the phase change heat conduction material is larger than the size of the passing path of the uniformity control assembly 302, the second driving device is started to drive the limiting screw 319 to rotate, and the limiting screw 319 drives the sealing plate 320 to slide along the side plate 318 through thread engagement to release the phase change heat conduction material.
When the sealing plate 320 abuts against the bottom of the inclined plane groove 303 under the restriction of the limit screw 319, the sealing plate 320 and the inner wall of the inclined plane groove 303 are both in a sealing state, and the sealing plate 320 and the inclined plane connecting plate 317 are also in a sealing state.
Two linear grooves 321 are symmetrically formed in two inner side walls of the inclined plane groove 303, a linear driving screw 322 is mounted in one linear groove 321 through a bearing, one end of the linear driving screw 322 is connected with a third driving device, a guide sliding rod 323 is fixedly mounted in the other linear groove 321, a strip-shaped push plate 324 is mounted on the guide sliding rod 323 and the linear driving screw 322 together, an arc-shaped scraper 325 which is abutted to the bottom in the inclined plane groove 303 is fixedly connected to one side of the strip-shaped push plate 324, and the arc-shaped scraper 325 is driven by the strip-shaped push plate 324 to assist in pushing the phase change heat conduction materials to flow into the temporary storage channel 304 and be uniformly distributed.
Secondly, it is considered that the phase change heat conduction material flows slowly on the inclined plane groove 303, and not only the production efficiency is affected but also the distribution of the phase change heat conduction material is easily uneven in the slow flowing process.
Therefore, the third driving device is started to drive the linear driving screw rod 322 to rotate, the linear driving screw rod 322 drives the strip-shaped push plate 324 to slide along the guide slide bar 323 through thread engagement, the arc-shaped scraper 325 assists in pushing the phase change heat conduction material on the inclined plane groove 303 to move to the temporary storage channel 304 in an accelerating manner under the pushing of the strip-shaped push plate 324, the flowing speed of the phase change heat conduction material is accelerated, the production efficiency is improved, secondly, the distribution situation of the phase change heat conduction material in the accelerating movement process is changed less, and the influence on the film forming thickness is avoided.
The inclined plane connecting plate 317 is positioned between the linear groove 321 and the sealing plate 320, and the shortest distance between the linear groove 321 and the sealing plate 320 is smaller than the sum of the length of the strip-shaped push plate 324 and the thickness of the arc-shaped scraper 325.
The arc-shaped scraper 325 needs to be located at an upper position of the escrow channel 304, i.e., at an upper position on the inclined surface groove 303, in order to push the phase change heat conductive material into the inside of the escrow channel 304.
Secondly, in order to enable the arc-shaped scraper 325 to completely push the phase change heat conduction material to the sealing plate 320, that is, the length of the strip-shaped push plate 324 needs to be longer, so that the shortest distance between the linear groove 321 and the sealing plate 320 is smaller than the sum of the length of the strip-shaped push plate 324 and the thickness of the arc-shaped scraper 325, when the arc-shaped scraper 325 abuts against the sealing plate 320, one end of the strip-shaped push plate 324, which is far away from the sealing plate 320, is located outside the temporary storage channel 304 and is connected with the guide slide bar 323 and the linear driving screw 322.
The uniformity control assembly 302 comprises two adjusting grooves 326 symmetrically arranged on the inner side wall of the inclined plane groove 303, the two adjusting grooves 326 are connected with sliding connection seats 327 in a sliding mode, one sliding connection seat 327 is connected with a lifting screw 328 rotatably connected with the bottom in the adjusting groove 326 in a threaded mode, one end of the lifting screw 328 is connected with a fourth driving device, a pressing roller 329 used for limiting the phase change heat conduction material to pass through the thickness is installed between the two sliding connection seats 327 in a common mode, and the pressing roller 329 is driven through the lifting screw 328 to adjust the film forming thickness of the phase change heat conduction material according to the distance between the bottom and the bottom in the inclined plane groove 303.
When the phase change heat conduction material released by the temporary storage channel 304 flows to the uniformity control assembly 302, the phase change heat conduction material passes through a passing path formed between the pressing roller 329 and the bottom in the inclined plane groove 303, the thickness of the phase change heat conduction material passing through and the thickness of the formed film are controlled through the limitation of the pressing roller 329, and the integral uniformity of the phase change heat conduction material is kept unchanged.
Secondly, when the film forming thickness needs to be adjusted, the fourth driving device is started to drive the lifting screw 328 to rotate, the lifting screw 328 drives the sliding connection seat 327 to adjust the height through thread engagement, so that the height of the pressing roller 329 is changed, namely the size of a passing path formed between the pressing roller 329 and the bottom in the inclined plane groove 303 is changed, and the passing thickness of the phase change heat conduction material is changed.
The length of the pressing roller 329 is larger than the width of the inclined surface groove 303, and the shortest interval between the pressing roller 329 and the bottom in the inclined surface groove 303 and the shortest interval between the pressing roller 329 and the film carrier 2 are always equal.
In order to prevent the phase change heat conductive material from passing through the space outside the press roller 329 during flowing to cause different film forming thicknesses, the length of the press roller 329 is set to be greater than the width of the inclined groove 303, and the flowing width of the phase change heat conductive material should be controlled.
Secondly, the distance between the pressing roller 329 and the bottom in the inclined plane groove 303 and the distance between the film carriers 2 are the same, so that two passing paths are formed between the pressing roller 329 and the inclined plane groove 303 and between the pressing roller 329 and the film carriers 2, the passing thickness of the phase change heat conduction material is continuously controlled twice, and the accuracy of the passing thickness of the phase change heat conduction material is improved.
The end of the inclined plane groove 303 is arc-shaped, the film carrier 2 is tangent to the arc-shaped part of the inclined plane groove 303, and the axis of the lifting screw 328 is parallel to the arc bisector of the arc-shaped part of the inclined plane groove 303.
The connection part of the rest film carrier 2 of the inclined plane groove 303 is arc-shaped and is tangent with the film carrier 2. The phase change heat conduction material is enabled to reduce the obstruction when flowing from the inclined plane groove 303 to the film carrier 2, and the influence on the film forming quality caused by the change of the whole shape of the phase change heat conduction material when flowing is avoided.
In order to control the distance between the press roller 329 and the bevel groove 303 to be always the same as the distance between the press roller 329 and the film carrier 2, the adjustment path of the press roller 329 needs to be located on the angular bisector of the included angle formed by the bevel groove 303 and the film carrier 2, that is, the axis of the elevating screw 328 is parallel to the arc bisector of the circular arc portion of the bevel groove 303.
Example 2:
the invention also provides a preparation method of the phase change heat conduction material forming device, which comprises the steps of,
s100, sealing the temporary storage channel by a plate, adjusting the distance between a press roller and the inner bottom wall of the inclined plane groove according to the production requirement of the film forming thickness, adding a liquid phase change heat conduction material into the hopper,
s200, starting a first driving device to drive a hopper to reciprocate to adjust the phase change heat conduction materials to be uniformly distributed and stored in a temporary storage channel, opening a sealing plate to release the phase change heat conduction materials when the stacking thickness of the phase change heat conduction materials is larger than the distance between a pressing roller and an inclined plane groove,
s300, the forming thickness of the phase change heat conduction material is controlled by a pressing roller, the thickness of the phase change heat conduction material passing through is secondarily controlled on the film carrier, and meanwhile the phase change heat conduction material is adhered to the film carrier and is conveyed to the next procedure for forming.
In S200, when the phase change heat conductive material is greater than the distance between the pressing roller 329 and the inclined plane groove 303, the thickness of each portion is determined by the distance between the pressing roller 329 and the inclined plane groove 303 when the phase change heat conductive material passes through the distance between the pressing roller 329 and the inclined plane groove 303, so as to control the thickness of each portion to be uniform.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made to the disclosure by those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents should also be considered as falling within the scope of the disclosure.
Claims (8)
1. The utility model provides a forming device of phase transition heat conduction heat dissipation membrane which characterized in that: the device comprises a forming table (1) and a film carrier (2) which is arranged on the forming table (1) and moves linearly, wherein an adjusting part (3) which is positioned above the film carrier (2) and used for adjusting the uniformity of the formed thickness of a film is also arranged on the forming table (1), the adjusting part (3) receives a phase-change heat conduction material and is uniformly distributed to the inside, and the adjusting part (3) adjusts the size of a path which is formed by tape casting on the film carrier (2) to control the thickness and uniformity of the formed film of the phase-change heat conduction material;
the adjusting component (3) comprises a material receiving assembly (301) arranged on the forming table (1) and a uniformity control assembly (302) arranged on the material receiving assembly (301), the phase change heat conduction material is stored in the material receiving assembly (301) and is adjusted in distribution uniformity according to the size of a passing path of the uniformity control assembly (302), and meanwhile, the uniformity control assembly (302) controls the phase change heat conduction material to keep the distribution uniformity to be conveyed onto the film carrier (2) to be formed in the next process;
the material receiving assembly (301) comprises an inclined plane groove (303) obliquely arranged on the forming table (1) and a temporary storage channel (304) arranged on the inclined plane groove (303) and used for storing the phase change heat conduction material, the uniformity control assembly (302) is arranged on the inclined plane groove (303), two side supports (305) are symmetrically arranged at the top of the inclined plane groove (303), a distribution adjusting plate (306) is fixedly connected to the two side supports (305) together, a circulating distribution adjuster (307) is arranged on the distribution adjusting plate (306), a hopper (308) in sliding connection with the distribution adjusting plate (306) is mounted on the circulating distribution adjuster (307), and the phase change heat conduction material in the hopper (308) is driven by the circulating distribution adjuster (307) to be uniformly distributed in the inclined plane groove (303) and moves to the inside of the temporary storage channel (304) under the action of gravity;
the circulation distribution regulator (307) comprises a first connecting shaft (309) and a second connecting shaft (310) which are sequentially installed on the distribution regulating plate (306) from top to bottom, one end of the first connecting shaft (309) is connected with a first driving device, a rotating disc (311) is fixedly connected onto the first connecting shaft (309), a transmission column (312) is eccentrically arranged on the rotating disc (311), a sector gear (313) is rotatably connected onto the second connecting shaft (310), a circular center of the sector gear (313) is fixedly connected with a strip-shaped driving plate (314), a strip-shaped driving groove (315) which is slidably connected with the transmission column (312) is formed in the strip-shaped driving plate (314), a rack portion (316) meshed with the sector gear (313) is arranged at the top of the hopper (308), the sector gear (313) drives the strip-shaped driving plate (314) to perform reciprocating circular motion through the inclined plane (313), and the sector gear drives the hopper (308) to perform reciprocating linear motion to uniformly distribute the phase change material into the phase change groove (303).
2. The apparatus of claim 1, wherein: temporary storage passageway (304) including fixed connection in inclined plane connecting plate (317) at inclined plane groove (303) top and along perpendicular inclined plane connecting plate (317) top direction sets up side board (318) of inclined plane connecting plate (317) one side, follow the perpendicular to on side board (318) bottom direction installs stop screw (319) in inclined plane groove (303), just the one end of stop screw (319) is connected with second drive arrangement, threaded connection have on stop screw (319) with side board (318) lateral wall sliding connection's closing plate (320), just closing plate (320) with inclined plane connecting plate (317) and inclined plane groove (303) constitute storage space jointly and save phase change heat conduction material temporarily, and pass through closing plate (320) control the break-make of phase change heat conduction material flow path.
3. The apparatus of claim 2, wherein: two straight line groove (321), one of them have been seted up to the symmetry on two inside walls in inclined plane groove (303) install sharp drive screw (322) through the bearing in straight line groove (321), just the one end of sharp drive screw (322) is connected with third drive arrangement, another fixed mounting has direction slide bar (323) in straight line groove (321), direction slide bar (323) with linear drive screw (322) install bar push pedal (324) jointly, one side fixedly connected with of bar push pedal (324) with arc scraper blade (325) that the bottom offsets in inclined plane groove (303), just arc scraper blade (325) pass through bar push pedal (324) drive is supplementary to be promoted phase change heat conduction material flows extremely evenly distributed in the passageway of keeping in (304).
4. The apparatus of claim 3, wherein: the inclined plane connecting plate (317) is positioned between the linear groove (321) and the sealing plate (320), and the shortest distance between the linear groove (321) and the sealing plate (320) is smaller than the sum of the length of the strip-shaped push plate (324) and the thickness of the arc-shaped scraper (325).
5. The forming device of a heat dissipating film with phase change conductivity as claimed in claim 3, wherein: homogeneity control assembly (302) is including the symmetry setting two adjustment tank (326) on inclined plane groove (303) inside wall, two adjustment tank (326) common sliding connection has sliding connection seat (327), one of them sliding connection seat (327) go up threaded connection with bottom rotation connection's in adjustment tank (326) lifting screw (328), just the one end of lifting screw (328) is connected with fourth drive arrangement, two install jointly between sliding connection seat (327) and be used for restricting phase transition heat conduction material passes through compression roller (329) of thickness, and pass through lifting screw (328) drive compression roller (329) adjust with distance control between the bottom in inclined plane groove (303) phase transition heat conduction material's film thickness.
6. The apparatus of claim 5, wherein: the length of the pressing roller (329) is larger than the width of the inclined plane groove (303), and the shortest distance between the pressing roller (329) and the inner bottom of the inclined plane groove (303) is always equal to the shortest distance between the pressing roller (329) and the film carrier (2).
7. The forming device of a heat dissipating film with phase change conductivity as claimed in claim 6, wherein: the end part of the inclined plane groove (303) is arc-shaped, the film carrier (2) is tangent to the arc-shaped part of the inclined plane groove (303), and the axis of the lifting screw (328) is parallel to the arc bisector of the arc-shaped part of the inclined plane groove (303).
8. The preparation method of the phase-change heat-conducting and heat-dissipating film forming device applied to any one of claims 1 to 7 is characterized in that: comprises the steps of (a) preparing a mixture of,
s100, sealing the temporary storage channel by using a plate, adjusting the distance between a compression roller and the inner bottom wall of the inclined plane groove according to the production requirement of the film forming thickness, and adding a liquid phase change heat conduction material into the hopper;
s200, starting a first driving device to drive a hopper to reciprocate to adjust the phase change heat conduction materials to be uniformly distributed and stored in a temporary storage channel, and opening a sealing plate to release the phase change heat conduction materials when the stacking thickness of the phase change heat conduction materials is larger than the distance between a compression roller and an inclined plane groove;
s300, the forming thickness of the phase change heat conduction material is controlled by a compression roller, the thickness of the phase change heat conduction material when the phase change heat conduction material passes through is secondarily controlled on the film carrier, and the phase change heat conduction material is adhered to the film carrier and is transported to the next procedure for forming.
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| CN112103465B (en) * | 2020-09-21 | 2021-08-24 | 淮北市智俊科技有限公司 | Lithium battery production process |
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| US6220154B1 (en) * | 1999-10-01 | 2001-04-24 | Apex Machine Company | Dry offset rotary printer for labeling wine corks |
| CN101336158A (en) * | 2005-12-02 | 2008-12-31 | 通用电气公司 | Thermoplastic film for graphical applications and method for making the same |
| CN108355750A (en) * | 2018-01-30 | 2018-08-03 | 曾淑敏 | A kind of novel granulated sugar processing grinding equipment |
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