Automatic glue scraping equipment for automotive trim skin

Abstract

The invention relates to automatic glue scraping equipment for automobile interior trim skin, and belongs to the technical field of automobile interior trim part processing. The automatic glue scraping equipment sequentially comprises an unwinding feeding mechanism, an unwinding tensioning adjusting mechanism, a glue scraping mechanism, a cooling mechanism, a winding tensioning adjusting mechanism and a winding pressing mechanism in the skin conveying direction. The glue scraping mechanism comprises a scraper assembly, a pressing disc assembly used for conveying glue to the scraper assembly and a recycling assembly arranged on the scraper assembly and used for collecting the glue. The scraper assembly comprises a scraper body, a control valve arranged on the scraper body and used for controlling circulation of glue, a scraper support used for installing the scraper body and a plurality of scraper wheel sets used for adjusting the horizontally conveyed skin to be vertically conveyed, and the scraper support drives the scraper body to be close to or away from the skin. The glue scraping device has the effect of improving the glue scraping efficiency of the automobile skin.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile interior part processing, in particular to an automatic glue scraping device for automobile interior skin. BACKGROUND

[0002] The automobile interior skin is the outermost wrapping material of the automobile interior that can be touched by hands, and directly reflects the appearance of the interior and directly affects the touch of passengers and the durability of the vehicle. In order to facilitate the wrapping and bonding of the automobile interior skin and the injection molding part, the hot melt adhesive film preset process is usually used in the prior art.

[0003] The hot melt adhesive film preset process is an advanced automobile interior wrapping technology, which pre-applies a layer of reactive polyurethane hot melt adhesive on the back of the skin and cools and solidifies to form a stable adhesive film. When wrapping in the later stage, the adhesive film is reactivated by heating to realize rapid and firm bonding of the skin and the base material. However, this process still has problems, and in actual application, it may not be able to well meet certain specific production requirements, and there may be insufficient precision and efficiency in the steps such as glue scraping, thereby affecting the wrapping and bonding quality of the automobile interior skin and the injection molding part. SUMMARY

[0004] In order to improve the glue scraping efficiency of the automobile skin, the application provides an automatic glue scraping device for automobile interior skin.

[0005] The automatic glue scraping device for automobile interior skin provided by the application adopts the following technical scheme: An automatic glue scraping device for automobile interior skin comprises, in sequence along the conveying direction of the skin, a unwinding feeding mechanism, a unwinding tension adjusting mechanism, a glue scraping mechanism, a cooling mechanism, a winding tension adjusting mechanism and a winding pressing mechanism. The glue scraping mechanism comprises a scraper assembly, a pressure plate assembly for conveying glue to the scraper assembly, and a recovery assembly arranged on the scraper assembly and used for collecting glue. The scraper assembly comprises a scraper main body, a control valve body arranged on the scraper main body and used for controlling the flow of glue, a scraper support for mounting the scraper main body, and a plurality of scraper wheel groups for adjusting the horizontally conveyed skin to be vertically conveyed. The scraper support drives the scraper main body to approach or move away from the skin.

[0006] By adopting the technical scheme, the unwinding feeding mechanism can arrange the skin to be coated and preliminarily convey the skin, the unwinding tension adjusting mechanism can adjust the conveying deviation of the skin, the scraper assembly of the coating mechanism can coat the skin, the control valve body controls the flow of glue, the scraper support drives the scraper main body to approach or move away from the skin, the scraper wheel set adjusts the horizontally conveyed skin to be vertically conveyed, the pressure plate assembly conveys the glue to the scraper assembly, the recovery assembly can collect the dripping glue generated when the glue and the skin are separated after the coating is completed, the cooling mechanism cools the coated skin, the winding tension adjusting mechanism adjusts the deviation of the skin during winding, and the winding pressure mechanism collects the skin after the coating is completed, so that the skin of the automobile interior is automatically coated, the coating efficiency and quality are improved.

[0007] Optionally, the unwinding feeding mechanism comprises an unwinding roller for arranging the skin to be coated, a first skin pressing roller arranged at the output end of the unwinding roller, an unwinding storage box for storing the skin, and a plurality of sets of unwinding pulley sets arranged in the unwinding storage box. The winding pressure mechanism comprises a winding roller for collecting the coated skin, a second skin pressing roller arranged at the input end of the winding roller, a winding storage box for storing the skin, and a plurality of sets of winding pulley sets arranged in the winding storage box.

[0008] By adopting the technical scheme, the unwinding roller can arrange the skin to be coated, the first skin pressing roller and the unwinding pulley set cooperate with the unwinding storage box to straighten and convey the skin, which facilitates subsequent coating operation; the winding roller can collect the coated skin, the second skin pressing roller and the winding pulley set cooperate with the winding storage box to collect the coated skin, so that the skin of the automobile interior is automatically coated from unwinding to winding, and the coating process is ensured to be smoothly performed.

[0009] Optionally, the unwinding tension adjusting mechanism comprises a first adjusting drive, an unwinding connecting plate which is installed on the unwinding storage box in a lifting manner, a plurality of sets of first adjusting wheels which are rotatably installed on the unwinding connecting plate and are spaced from the unwinding pulley sets, and a transmission structure which connects the unwinding connecting plate and the first adjusting drive. The winding tension adjusting mechanism comprises a second adjusting drive, a winding connecting plate which is installed on the winding storage box in a lifting manner, a plurality of sets of second adjusting wheels which are rotatably installed on the winding connecting plate and are spaced from the winding pulley sets, and a transmission structure which connects the winding connecting plate and the second adjusting drive.

[0010] By adopting the technical scheme, the unwinding tension adjusting mechanism and the winding tension adjusting mechanism can respectively adjust the deviation of the skin during unwinding and winding, ensure the position accuracy of the skin during conveying, avoid the deviation of the skin during conveying, ensure the smooth performance of subsequent coating, cooling, winding and other processes, and thus improve the working stability and coating quality of the automatic coating equipment for the skin of the automobile interior.

[0011] Optionally, the cooling mechanism comprises a cooling support, a cooling wheel set arranged on the cooling support and adjusting the vertically conveyed skin to be horizontally conveyed, and a cooling fan arranged on the cooling support.

[0012] By adopting the above technical scheme, the cooling wheel set can adjust the vertically conveyed skin to be horizontally conveyed, facilitating subsequent winding and other operations, and the cooling fan can cool the skin after glue scraping, so that the pre-scrapped glue quickly cools and solidifies to form a stable glue film.

[0013] Optionally, the recycling assembly comprises an electrowetting module for increasing the contact angle of the glue and an adsorption module for collecting excess glue. The electrowetting module comprises a mounting base plate arranged on the scraper body, a microelectrode array arranged on the top of the mounting base plate, an insulating layer covering the microelectrode array, a glue-repellent coating covering the insulating layer, and a lead channel arranged on the side wall of the mounting base plate, and the glue outlet of the scraper body is provided with a mounting groove for the mounting base plate, and the microelectrode array and the power supply are connected through the lead channel.

[0014] By adopting the above technical scheme, the microelectrode array of the electrowetting module can increase the contact angle of the glue after being electrified, and the glue-repellent coating can make the glue more easily separate from the scraper body, so that the separation of the glue and the skin is more neat and rapid, the adsorption module can collect excess glue to avoid waste and pollution, and the efficiency and quality of the glue scraping process are improved, and the mechanisms of the automatic glue scraping equipment work cooperatively along the conveying direction of the skin.

[0015] Optionally, the recycling assembly comprises a recycling die holder, a connecting support connecting the recycling die holder and the scraper body, a vacuum assembly for adsorbing dripping glue, and a heat preservation structure. The opening side of the recycling die holder is provided with an adsorption groove, and the adsorption groove comprises a contraction section, a throat section and an expansion section in sequence from top to bottom.

[0016] By adopting the above technical scheme, the connecting support of the recycling assembly connects the recycling die holder and the scraper body, which can ensure the stable connection of the recycling assembly and the scraper assembly; the vacuum assembly can adsorb the dripping glue to further reduce the waste of the glue and pollute the working environment; the heat preservation structure can prevent the glue from cooling and solidifying during the recycling process; and the contraction section, the throat section and the expansion section of the adsorption groove can optimize the adsorption effect and more efficiently collect the dripping glue.

[0017] Optionally, the vacuum assembly comprises a gravity settling chamber, a cyclone separator and a vacuum pump connected in sequence, and the gravity settling chamber is provided with a flow baffle for mixing gas abutment.

[0018] By adopting the technical scheme, the structural composition of the vacuum assembly is disclosed, the structure that the gravity settling chamber, the cyclone separator and the vacuum pump are sequentially communicated and the flow baffle in the gravity settling chamber are utilized, and the glue in the mixed gas can be effectively separated, and the glue recovery efficiency is improved.

[0019] Optionally, the pressure plate assembly comprises a pressure plate support, a heating pressure plate which is installed on the pressure plate support and is used for being inserted into the barrel, a glue extraction assembly which is arranged on the heating pressure plate and is used for extracting glue, and a conveying pipe which is arranged on the heating pressure plate.

[0020] By adopting the technical scheme, the glue in the barrel can be heated, extracted and conveyed, the glue can be stably conveyed to the doctor blade assembly to perform glue scraping work in a stable manner and in accordance with the use temperature requirement, and the glue scraping effect and quality are ensured.

[0021] In summary, the present application has at least one of the following beneficial technical effects: The unwinding feeding mechanism, the unwinding tension adjusting mechanism, the glue scraping mechanism, the cooling mechanism, the winding tension adjusting mechanism and the winding pressing mechanism are sequentially arranged along the conveying direction of the skin, the automatic glue scraping of the skin of the automobile interior can be realized, and the precision and efficiency of the scraped glue are improved. The doctor blade assembly of the glue scraping mechanism can drive the doctor blade body to approach or move away from the skin through the doctor blade support, and the glue scraping is accurately controlled. The setting of the electrowetting module can change from the adhesion state to the contraction state when the glue is broken, so as to realize the neat breaking, and the setting of the adsorption module can capture the glue dripping when the glue dripping is about to occur or has occurred. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic diagram of the embodiment of the present application.

[0023] Figure 2 It is a structure schematic diagram of the unwinding feeding mechanism of the embodiment of the present application.

[0024] Figure 3 It is a structure schematic diagram of the unwinding tension adjusting mechanism of the embodiment of the present application.

[0025] Figure 4 It is a structure schematic diagram of the winding pressing mechanism of the embodiment of the present application.

[0026] Figure 5 It is a structure schematic diagram of the abutting structure of the cooling mechanism of the embodiment of the present application.

[0027] Figure 6 It is a structure schematic diagram of the doctor blade body of the embodiment of the present application.

[0028] Figure 7 It is a structure schematic diagram of the electrowetting module of the embodiment of the present application.

[0029] Figure 8 is a structural schematic diagram of an adsorption module of an embodiment of the present application.

[0030] Figure 9 is a structural schematic diagram of a pressure plate assembly of an embodiment of the present application.

[0031] Legend: 1, unwinding and feeding mechanism; 11, unwinding roller; 12, first skin pressing roller; 13, unwinding storage box; 14, unwinding pulley set; 15, unwinding support; 2, unwinding tension adjustment mechanism; 21, first adjustment driving member; 22, unwinding connecting plate; 23, first adjustment wheel; 24, guide rod; 25, lifting guide block; 26, fixed pulley; 27, transmission wire rope; 28, counterweight; 3, glue scraping mechanism; 31, scraper assembly; 311, scraper main body; 3111, glue outlet groove; 3112, mounting base groove; 312, control valve body; 313, scraper support; 314, scraper wheel set; 32, pressure plate assembly; 321, pressure plate support; 322, heated pressure plate; 323, glue extraction assembly; 324, conveying pipe; 33, recovery assembly; 331, electro wetting module; 3331, mounting base plate; 3332, microelectrode array; 3333, insulating layer; 3334, glue repelling coating; 3335, lead wire channel; 332, adsorption module; 3321, recovery mold base; 33211, adsorption groove; 33212, contraction section; 33213, throat; 33214, expansion section; 3322, connecting support; 3323, vacuum assembly; 33231, gravity settling chamber; 33232, cyclone separator; 33233, vacuum pump; 33234, flow baffle; 3324, heat preservation structure; 4, cooling mechanism; 41, cooling support; 42, cooling wheel set; 43, cooling fan; 5, winding tension adjustment mechanism; 51, second adjustment driving member; 52, winding connecting plate; 53, second adjustment wheel; 6, winding pressing mechanism; 61, winding roller; 62, second skin pressing roller; 63, winding storage box; 64, winding pulley set; 65, winding support. DETAILED DESCRIPTION

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the present application can be arranged in different directions, so these orientation-indicating terms are only illustrative and should not be regarded as limiting, such as "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity. In addition, the features defined as "first" and "second" can be explicitly or implicitly included one or more features.

[0033] The following will be described in detail in combination with the accompanying drawings Figures 1-9 The present application is further described in detail.

[0034] The embodiments of the present application disclose an automatic glue scraping equipment for automobile interior skin.

[0035] Referring to Figure 1 An automatic glue scraping equipment for automobile interior skin comprises, in sequence along the conveying direction of the skin, a unwinding feeding mechanism 1, a unwinding tension adjusting mechanism 2, a glue scraping mechanism 3, a cooling mechanism 4, a winding tension adjusting mechanism 5 and a winding pressing mechanism 6.

[0036] Referring to Figure 2 and Figure 3 The unwinding feeding mechanism 1 comprises a unwinding roller 11 for placing the skin to be scraped, a first skin pressing roller 12 arranged at the output side of the unwinding roller 11, a unwinding storage box 13 for storing the skin, and a plurality of groups of unwinding pulley sets 14 arranged at the unwinding storage box 13. The unwinding feeding mechanism 1 has a unwinding support 15 fixedly connected with the unwinding storage box 13 and for rotatably mounting the unwinding roller 11, a rotating motor is mounted on the unwinding support 15 to drive the unwinding roller 11 to rotate in a clockwise direction along the conveying direction of the skin, and the first skin pressing roller 12 is rotatably mounted on the unwinding support 15 through a support to enable the skin to be pressed. Three groups of unwinding pulley sets 14 are uniformly and rotatably arranged in the unwinding storage box 13, wherein the output port of the unwinding storage box 13 is further provided with a deviation correcting mechanism for adjusting the transverse displacement of the skin, and the deviation correcting mechanism is a prior art (not marked in the figure).

[0037] The unwinding tension adjustment mechanism 2 is integrally installed on the unwinding storage box 13, and includes a first adjustment drive component 21, an unwinding connecting plate 22, several sets of first adjustment wheels 23, and a transmission structure. The first adjustment drive component 21 is a lifting cylinder fixed to opposite sides of the unwinding storage box 13, and the unwinding connecting plate 22 is lifted and installed on the unwinding storage box 13. A guide rod 24 is fixed on the unwinding storage box 13 along the height direction. A lifting guide block 25 that slides and engages with the guide rod 24 is fixed on the unwinding connecting plate 22. The two ends of several sets of first adjustment wheels 23 are rotatably installed on two corresponding unwinding connecting plates 22. In this embodiment, the number of first adjustment wheels 23 and unwinding pulley groups 14 are the same, and the first adjustment wheels 23 and unwinding pulley groups 14 are arranged alternately.

[0038] The transmission structure is used to connect the unwinding connecting plate 22 and the piston rod of the first adjusting drive 21. It includes two sets of fixed pulleys 26 fixed to the top of the unwinding storage box 13, a transmission rope 27 arranged on the fixed pulleys 26, and a counterweight block 28 set at the end of the transmission rope 27. The piston rod of the first adjusting drive 21 and the lifting guide block 25 are connected through the transmission rope 27, so that the extension and resetting of the piston rod of the first adjusting drive 21 can drive the lifting and lowering of the three sets of first adjusting wheels 23, thereby adjusting the tightness of the skin during conveying.

[0039] Reference Figure 4 The winding and pressing mechanism 6 and the unwinding and feeding mechanism 1 have the same structure and are used to rewind the coated outer skin. The winding and pressing mechanism 6 includes a winding roller 61, a second pressing roller 62 disposed on one side of the input end of the winding roller 61, a winding storage box 63 for storing the outer skin, and a winding pulley group 64 disposed in the winding storage box 63. The winding and pressing mechanism 6 has a winding bracket 65 for rotatably mounting the winding roller 61.

[0040] The winding tension adjustment mechanism 5 is integrally installed in the winding storage box 63 and is used to adjust the tension of the outer skin within the winding storage box 63. Its overall structure is consistent with that of the unwinding tension adjustment mechanism 2. The winding tension adjustment mechanism 5 includes a second adjustment drive component 51, a winding connecting plate 52 that is lifted and installed in the winding storage box 63, three sets of second adjustment wheels 53 that are installed on the winding connecting plate 52 and staggered with the winding pulley group 64, and a transmission structure connecting the winding connecting plate 52 and the second adjustment drive component 51. The adjustment principle of the winding tension adjustment mechanism 5 is the same as that of the unwinding tension adjustment mechanism 2, and will not be described further in this application.

[0041] Reference Figure 5 The cooling mechanism 4 is used to cool the surface that has just been coated with adhesive, and it is located between the adhesive coating mechanism 3 and the winding tension adjustment mechanism 5. The cooling mechanism 4 includes a cooling bracket 41, a cooling wheel assembly 42 disposed on the cooling bracket 41 and used for adjusting the surface, and a cooling fan 43 mounted on the cooling bracket 41.

[0042] The cooling wheel set 42 is rotatably installed on the cooling support 41, and is used to adjust the vertically conveyed skin to be horizontally conveyed. Compared with cooling the vertically conveyed skin, the horizontally conveyed skin cooling can reduce the phenomenon of glue sagging on the skin, and ensure the uniformity of the glue coating. The cooling support 41 is further provided with a rotating motor for driving the cooling wheel set 42 to rotate. The cooling fans 43 are arranged in the horizontal direction on the cooling support 41, so as to be able to play a role in cooling the surface of the horizontally conveyed skin, and make the glue fixed on the skin.

[0043] With reference to Figure 5 and Figure 6 , the glue scraping mechanism 3 is located between the unwinding tension adjusting mechanism 2 and the cooling mechanism 4, and is used to uniformly apply the high-temperature liquid glue on the skin. The glue scraping mechanism 3 comprises a scraper assembly 31, a pressure plate assembly 32 for heating and softening the glue, and a recovery assembly 33 arranged on the scraper assembly 31.

[0044] The scraper assembly 31 comprises a scraper main body 311, a control valve body 312 arranged on the scraper main body 311, a scraper support 313 for installing the scraper main body 311, and a plurality of scraper wheel sets 314 for adjusting the horizontally conveyed skin to be vertically conveyed. The scraper wheel set 314 is rotatably installed on the scraper support 313, and is used to adjust the horizontally conveyed skin to be vertically conveyed.

[0045] The scraper main body 311 and the pressure plate assembly 32 are communicated through a conveying hose, and the pressure plate assembly 32 conveys the glue to the scraper main body 311. The scraper main body 311 is consistent with the structure of the slit extrusion type coating head in the prior art, and is fixedly installed on the scraper support 313 through bolts. The scraper main body 311 has a glue outlet groove 3111 extending in the horizontal direction and corresponding to the skin, and the cross section of the glue outlet groove 3111 is a flat rectangle. The control valve body 312 is an electromagnetic valve arranged at the input port of the scraper main body 311, and is used to control the inflow of the glue. At the same time, the scraper support 313 is linearly slidably installed on the ground, and a push cylinder for driving the scraper support 313 to move horizontally is arranged on the scraper support 313, so that the scraper main body 311 can move close to or away from the skin in the horizontal direction.

[0046] With reference to Figure 6 and Figure 7 , in order to reduce the probability of glue dripping when the glue scraping is finished, the application further comprises a recovery assembly 33. The recovery assembly 33 comprises an electrowetting module 331 and an adsorption module 332. The electrowetting module 331 is used to increase the contact angle of the glue at the outlet end of the scraper main body 311, so that the glue can be neatly broken.

[0047] The electrowetting module 331 includes a mounting substrate 3331, a microelectrode array 3332, an insulating layer 3333, a glue-repellent coating 3334, and a lead channel 3335. The mounting substrate 3331 is a long strip-shaped metal block, and its extension direction is consistent with that of the glue outlet slot 3111. The glue outlet slot 3111 has a mounting groove 3112 for mounting the mounting substrate 3331, so that the mounting substrate 3331 is flush with the bottom wall of the glue outlet slot 3111.

[0048] The microelectrode array 3332 is a microcircuit layer formed on the surface of the mounting substrate 3331 by a photolithography-etching process. The microelectrode array 3332 is composed of multiple groups of parallel finger-shaped electrodes, and the adjacent electrodes have opposite polarities, which are used to generate a uniform electric field in the glue outlet slot 3111. The microelectrode array 3332 is usually made of a metal with good conductivity, strong adhesion, and corrosion resistance.

[0049] The insulating layer 3333 is an insulating film layer completely covering the microelectrode array 3332, and its thickness is 1-5 µm, which is used to prevent the electrodes from directly contacting the glue and to avoid short circuit. The glue-repellent coating 3334 is coated on the outermost layer of the electrowetting module 331, which directly contacts the glue. The low surface property of the glue-repellent coating 3334 makes the initial contact angle of the glue on the surface of the electrowetting module 331 larger, which further improves the overall breaking effect of the glue in the glue outlet.

[0050] The lead channel 3335 is arranged on the side wall of the mounting substrate 3331, and one end of the lead channel 3335 is connected to the end of the microelectrode array 3332. Multiple lead channels 3335 are connected to form a main lead, which extends to the outer wall of the electrowetting module 331 to form a bonding point. A metal wire is connected to the bonding point by a wire bonding technology, and the other end of the metal wire is connected to an external power supply.

[0051] The adsorption module 332 is located below the scraper body 311, and includes a recovery die 3321, a connecting bracket 3322, a vacuum assembly 3323, and a heat preservation structure 3324. The recovery die 3321 is a hollow long strip-shaped box body, and has an adsorption slot 33211 on the top for absorbing glue. The adsorption slot 33211 penetrates through the top of the recovery die 3321, and has the same width as the glue outlet slot 3111.

[0052] The cross section of the adsorption slot 33211 includes a contraction section 33212, a throat section 33213, and an expansion section 33214 from top to bottom. When the vacuum assembly 3323 works, the airflow is accelerated through the throat section 33213, and according to Bernoulli's principle, a strong local negative pressure is formed in the contraction section 33212, which generates a strong suction force on the glue that tries to drop.

[0053] The connecting support 3322 is an L-shaped metal support, one end of which is fixedly connected to the bottom of the scraper main body 311 through a bolt, and the other end is provided with a strip-shaped hole in a horizontal direction. The recovery mold base 3321 is provided with a sliding block which is in sliding cooperation with the strip-shaped hole. The recovery mold base 3321 is horizontally moved in the strip-shaped hole by a gas cylinder. When the glue is broken under the action of the electrowetting module 331, the adsorption module 332 is moved to the position directly below the glue outlet groove 3111 by a gas cylinder.

[0054] The vacuum assembly 3323 comprises a gravity settling chamber 33231, a cyclone separator 33232 and a vacuum pump 33233 which are sequentially communicated. The gravity settling chamber 33231 is connected to the bottom opening of the recovery mold base 3321, and a baffle 33234 is arranged at the inner top of the gravity settling chamber 33231. After the mixed gas enters the gravity settling chamber 33231, the space is expanded, and the glue droplets with a density greater than air naturally sink to the bottom under the action of gravity. The glue droplets with a large inertia collide with the baffle and flow down.

[0055] The cyclone separator 33232 has a tangential inlet which is consistent with the structure of the prior art. After the mixed gas enters the cyclone separator 33232, it rotates at high speed, and the glue droplets with a large density are thrown to the inner wall.

[0056] The heat preservation structure 3324 comprises a heating rod arranged on the outer side wall of the recovery mold base 3321, heat preservation cotton wrapped outside the heating rod, and a metal protective shell fixed to the outside of the recovery mold base 3321.

[0057] Referring to Figure 9 The pressure plate assembly 32 is arranged on one side of the scraper assembly 31 as a whole, and is used for conveying glue to the scraper main body 311. The pressure plate assembly 32 comprises a pressure plate support 321, a heating pressure plate 322, a glue pumping assembly 323 and a conveying pipe 324. The pressure plate support 321 is a metal plate body provided with a pulley at the bottom. The glue barrel is positioned and placed on the pressure plate support 321, and the heating pressure plate 322 is vertically arranged and connected to the pressure plate support 321. In this embodiment, the heating pressure plate 322 is vertically arranged and connected to the pressure plate support 321. The glue pumping assembly 323 is arranged on the top of the heating pressure plate 322, and comprises a driving motor and a gear pump. The specific principle is consistent with that of the pressure plate machine in the prior art. One end of the conveying pipe 324 is in communication with the output port of the gear pump, and the other end is in communication with the input port of the scraper main body 311.

[0058] The implementation principle of the automatic glue scraping equipment for automobile interior skin is as follows: the automatic glue scraping equipment for automobile interior skin stably transports the skin to be scraped by the unwinding feeding mechanism 1, and the unwinding tension adjusting mechanism 2 adjusts the conveying position of the skin to ensure the accuracy of conveying. The scraper assembly 31, the pressure plate assembly 32 and the recovery assembly 33 in the glue scraping mechanism 3 cooperate with each other to realize precise glue scraping operation and recovery of excess glue. The cooling mechanism 4 cools the skin coated with glue to make the glue quickly solidify. The winding tension adjusting mechanism 5 adjusts the position of the skin during winding, and the winding pressing mechanism 6 tightly winds up the skin after glue scraping.

[0059] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automatic glue scraping device for automotive interior skin, characterized in that, It sequentially comprises unwinding feeding mechanism (1), unwinding tension adjusting mechanism (2), glue scraping mechanism (3), cooling mechanism (4), winding tension adjusting mechanism (5) and winding pressing mechanism (6) along the direction of skin conveying; the glue scraping mechanism (3) comprises scraper assembly (31), pressing disc assembly (32) for conveying glue to the scraper assembly (31) and recovery assembly (33) arranged on the scraper assembly (31) and used for collecting glue; The scraper assembly (31) comprises scraper main body (311), control valve body (312) arranged on the scraper main body (311) and controlling glue flow, scraper support (313) for mounting the scraper main body (311) and scraper wheel group (314) for adjusting horizontal conveying skin to vertical conveying, the scraper support (313) drives the scraper main body (311) to approach or move away from the skin.

2. The automatic glue spreading device for automotive interior skin according to claim 1, characterized in that, The unwinding feeding mechanism (1) comprises unwinding roller (11) for arranging skin to be scraped, first skin pressing roller (12) arranged at the output end of the unwinding roller (11), unwinding cloth storage box (13) for storing skin and several groups of unwinding pulley groups (14) arranged in the unwinding cloth storage box (13); The winding pressing mechanism (6) comprises winding roller (61) for collecting skin after scraping glue, second skin pressing roller (62) arranged at the input end of the winding roller (61), winding cloth storage box (63) for storing skin and several groups of winding pulley groups (64) arranged in the winding cloth storage box (63).

3. The automatic glue spreading device for automotive interior skin according to claim 2, characterized in that, The unwinding tension adjusting mechanism (2) comprises first adjusting drive (21), unwinding connecting plate (22) which is installed on the unwinding cloth storage box (13) in a lifting manner, several groups of first adjusting wheels (23) which are rotatably installed on the unwinding connecting plate (22) and spaced from the unwinding pulley groups (14) and transmission structure connecting the unwinding connecting plate (22) and the first adjusting drive (21); The winding tension adjusting mechanism (5) comprises second adjusting drive (51), winding connecting plate (52) which is installed on the winding cloth storage box (63) in a lifting manner, several groups of second adjusting wheels (53) which are rotatably installed on the winding connecting plate (52) and spaced from the winding pulley groups (64) and transmission structure connecting the winding connecting plate (52) and the second adjusting drive (51).

4. The automatic glue spreading device for automotive interior skin according to claim 1, characterized in that, The cooling mechanism (4) comprises cooling support (41), cooling wheel group (42) arranged on the cooling support (41) and used for adjusting vertical conveying skin to horizontal conveying and cooling fan (43) arranged on the cooling support (41).

5. The automatic glue spreading device for automotive interior skin according to claim 1, characterized in that, The recovery assembly (33) comprises electrowetting module (331) for increasing glue contact angle and adsorption module (332) for collecting excess glue. The electrowetting module (331) comprises a mounting base plate (3331) arranged on the scraper body (311), a microelectrode array (3332) arranged on the top of the mounting base plate (3331), an insulation layer (3333) covering the microelectrode array (3332), a glue-repellent coating layer (3334) covering the insulation layer (3333), and a lead channel (3335) arranged on the side wall of the mounting base plate (3331), and the glue outlet of the scraper body (311) is provided with a mounting base groove (3112) for accommodating the mounting base plate (3331), and the microelectrode array (3332) and the power supply are connected through the lead channel (3335).

6. The automatic glue spreading device for automotive interior skin according to claim 5, characterized in that, The recycling assembly (33) comprises a recycling die holder (3321), a connecting support (3322) connecting the recycling die holder (3321) and the scraper body (311), a vacuum assembly (3323) for adsorbing the dripping glue, and a heat preservation structure (3324). The opening side of the recycling die holder (3321) is provided with an adsorption groove (33211), and the adsorption groove (33211) comprises a contraction section (33212), a throat section (33213) and an expansion section (33214) from top to bottom.

7. The automatic glue spreading device for automotive interior skin according to claim 6, characterized in that, The vacuum assembly (3323) comprises a gravity settling chamber (33231), a cyclone separator (33232) and a vacuum pump (33233) connected in sequence, and the gravity settling chamber (33231) is provided with a flow baffle (33234) for abutting against the mixed gas.

8. The automatic glue spreading device for automotive interior skin according to claim 1, characterized in that, The pressure plate assembly (32) comprises a pressure plate support (321), a heating pressure plate (322) which is installed on the pressure plate support (321) and is used for inserting into the barrel, a glue extraction assembly (323) arranged on the heating pressure plate (322) and used for extracting glue, and a conveying pipe (324) arranged on the heating pressure plate (322).

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