阅读说明：本技术 一种全自动集成涂装输送线 (Full-automatic integrated application transfer chain ) 是由 谭伟 谭天琪 张琪 于 2021-02-10 设计创作，主要内容包括：本发明公开了汽车零件生产领域的一种全自动集成涂装输送线,主要包括圆形轨道状的送料盘和沿送料盘周向间隔落在轨道内的圆环状待加工的工件,所述送料盘同轴固定安装在气缸上,送料盘上方设置有用于对待加工的工件进行双面涂装的双面涂装机构,所述双面涂装机构包括内侧涂装单元和外侧涂装单元；本发明工件到达涂装位置时,夹紧件能够对工件进行夹紧定位,使工件与夹紧件同步转动,通过第一齿轮和第二齿轮外啮合,第二转动轴与第三转动轴同步转动,使工件转动与第一涂层差速转动,工件和第二涂层转动方向相反,第一涂层、第二涂层能同步对工件内外侧壁进行涂装,提高了工件的涂装效率。(The invention discloses a full-automatic integrated coating conveying line in the field of automobile part production, which mainly comprises a circular track-shaped feeding disc and annular workpieces to be processed, wherein the annular workpieces to be processed are arranged in the track at intervals along the circumferential direction of the feeding disc, the feeding disc is coaxially and fixedly arranged on an air cylinder, a double-sided coating mechanism for double-sided coating of the workpieces to be processed is arranged above the feeding disc, and the double-sided coating mechanism comprises an inner side coating unit and an outer side coating unit; when the workpiece reaches the coating position, the clamping piece can clamp and position the workpiece, so that the workpiece and the clamping piece synchronously rotate, the workpiece and the second coating rotate in opposite directions through the external meshing of the first gear and the second gear and the synchronous rotation of the second rotating shaft and the third rotating shaft, and the inner side wall and the outer side wall of the workpiece can be synchronously coated by the first coating and the second coating, thereby improving the coating efficiency of the workpiece.)

1. The utility model provides a full-automatic integrated application transfer chain, includes feed table (2) that circular track form, the annular work piece (1) of treating processing of a plurality of equidistance arrangements is put at feed table (2) top surface middle part, its characterized in that: an air cylinder (3) fixedly connected with the inner side wall of the feeding plate (2) is vertically arranged at the circle center position of the feeding plate (2), the bottom of the air cylinder (3) is fixed at a working position, and a double-sided coating mechanism (4) is arranged above the feeding plate (2); two-sided coating mechanism (4) are including inboard application unit (5) and outside application unit (6), inboard application unit (5) are including rotating third axis of rotation (31) of installing in the frame, the bottom fixed mounting of third axis of rotation (31) has fourth gear (33), and third axis of rotation (31) cover is equipped with hollow first axis of rotation (7), first axis of rotation (7) upper end fixed mounting has first gear (8), first gear (8) below is equipped with rotation piece (9) of fixed suit on first axis of rotation (7), it is cylindric to rotate piece (9), the bottom of rotating piece (9) is rotated and is installed fifth gear (23), fifth gear (23) and fourth gear (33) external toothing, it is provided with collar (20) of suit on rotating piece (9) to rotate piece (9) the outside, the utility model discloses a workpiece coating machine, including collar (20), rotating piece (9), clamping unit, feeding tray (2), one end fixed mounting has second coating (16), and fixed mounting has second gear (17) on second axis of rotation (15), second gear (17) and first gear (8) meshing, third axis of rotation (31) are through hold-in range (32) and second axis of rotation (15) synchronous drive with fifth gear (23) meshing, fixed mounting has first coating (10) on collar (20) lateral surface, it presss from both sides tightly on rotating piece (9) still to be provided with clamping unit on rotating piece (9), clamping unit is used for work piece (1) to move when first coating (10) outside, outside application unit (6) are including rotating second axis of rotation (15) of installing in the frame, the one end fixed mounting that second axis of rotation (15) is close to feeding tray (2) has second coating (16), and fixed mounting has second gear (17) on second.

2. The full-automatic integrated coating conveying line according to claim 1, characterized in that: the double-sided coating mechanism (4) is arranged along the circumferential direction of the disc-shaped rack at intervals, the first gear (8) is meshed with a third gear (14) which is rotatably arranged on the rack, and the third gear (14) is externally connected with a driving motor.

3. The full-automatic integrated coating conveying line according to claim 2, characterized in that: the clamping unit comprises a clamping element (12), a plurality of first sliding grooves (11) are formed in the circumferential direction of the side face of the rotating element (9) at equal intervals, each first sliding groove (11) is internally provided with the clamping element (12) in a sliding mode, and the clamping element (12) is connected with the rotating element (9) through a first compression spring (13).

4. The full-automatic integrated coating conveying line according to claim 3, characterized in that: the peripheral surface of the rotating part (9) is further provided with a second sliding groove (18) in the vertical direction, a sliding part (29) is arranged in the second sliding groove (18) in a sliding mode, the sliding part (29) is further connected with the clamping part (12) in a sliding mode, a vacant part (21) is formed in the sliding part (29), and one end, far away from the feeding disc (2), of the sliding part (29) is fixedly connected with the first gear (8) through a second compression spring (19).

5. The full-automatic integrated coating conveying line according to claim 4, characterized in that: and a first wedge surface (22) is arranged on the side surface of one end of the hollow part (21) far away from the feeding plate (2).

6. The full-automatic integrated coating conveying line according to claim 5, characterized in that: a feeding bin (24) arranged on the frame is arranged below the third gear (14), the material supplementing bin (24) is used for supplementing consumed paint to the inner side coating unit (5) and the outer side coating unit (6) when the workpiece (1) moves to the paint position of the double-sided coating mechanism (4), the material supplementing bin (24) is cylindrical, the extrusion piece (25) is coaxially and slidably installed in the material supplementing bin (24), the extrusion piece (25) is fixedly connected with the rack through the air spring (26), the extrusion piece (25) is positioned right above the cylinder (3), the feeding bin (24) is fixedly connected with a first hollow pipeline (27) and a second hollow pipeline (28) which are communicated with the feeding bin, the top ends of the first hollow pipeline (27) and the second hollow pipeline (28) respectively extend to the positions right above the first coating (10) and the second coating (16), the material supplementing bin (24) is connected with a material containing vessel fixed on the top of the rack through a pipeline.

7. The full-automatic integrated coating conveying line according to claim 6, characterized in that: the top of the first coating (10) and the top of the second coating (16) are respectively provided with a first liquid containing groove (10-1) and a second liquid containing groove (16-1).

8. The full-automatic integrated coating conveying line according to claim 7, characterized in that: the middle positions of the first liquid containing groove (10-1) and the second liquid containing groove (16-1) are respectively positioned right below the top ends of the first hollow pipeline (27) and the second hollow pipeline (28).

9. The full-automatic integrated coating conveying line according to claim 8, characterized in that: the second coating (16) is made of elastic cotton.

10. The full-automatic integrated coating conveying line according to claim 9, characterized in that: the clamping part (30) on the clamping part (12) is made of sponge.

Technical Field

The invention relates to the field of automobile part production, in particular to a full-automatic integrated coating conveying line.

Background

The coating is an important link in the modern product manufacturing process, the rust-proof and corrosion-proof coating quality is one of the important aspects of the overall quality of the product, and the appearance quality of the product not only reflects the protection and decoration performance of the product, but also is an important factor forming the value of the product.

In the existing coating technology, the roller coating has unique advantages, the roller coating has the advantages that the one-time coating area is large, the coating efficiency is improved, the workload is reduced, the consumption of roller coating paint is less, the cost is saved, the inner side and the outer side of a workpiece need to be coated when the parts of the existing automobile products are coated, if the inner side and the outer side of the workpiece are respectively coated, the working procedures can be increased, the production efficiency is reduced, a full-automatic integrated coating conveying line is needed at present, the device can automatically and simultaneously roll the inner side and the outer side of the workpiece, the automatic coating is realized, and the production efficiency is improved.

Disclosure of Invention

The invention aims to provide a theme to solve the problems that when the automobile product parts are coated in the prior art, the inner side and the outer side of a workpiece need to be coated, and if the inner side and the outer side of the workpiece are respectively coated by rolling, the working procedures are increased, and the production efficiency is reduced.

In order to achieve the purpose, the invention provides the following technical scheme: a full-automatic integrated coating conveying line comprises a circular rail-shaped feeding disc, wherein a plurality of annular workpieces to be processed are arranged in the middle of the top surface of the feeding disc at equal intervals, an air cylinder fixedly connected with the inner side wall of the feeding disc is vertically arranged at the circle center position of the feeding disc, the bottom of the air cylinder is fixed at a working position, and a double-sided coating mechanism is arranged above the feeding disc; the double-sided coating mechanism comprises an inner coating unit and an outer coating unit, the inner coating unit comprises a third rotating shaft rotatably mounted on a rack, a fourth gear is fixedly mounted at the bottom end of the third rotating shaft, the third rotating shaft is sleeved with a hollow first rotating shaft, a first gear is fixedly mounted at the upper end of the first rotating shaft, a rotating part fixedly sleeved on the first rotating shaft is arranged below the first gear, the rotating part is cylindrical, a fifth gear is rotatably mounted at the bottom end of the rotating part, the fifth gear is externally meshed with the fourth gear, a mounting ring sleeved on the rotating part is arranged on the outer side of the rotating part, an inner tooth surface meshed with the fifth gear is arranged at the bottom of the mounting ring, a first coating is fixedly mounted on the outer side surface of the mounting ring, a clamping unit is further arranged on the rotating part and used for clamping a workpiece on the rotating part when the workpiece moves to the outer side of the first coating, the, a second coating is fixedly arranged at one end, close to the feeding disc, of the second rotating shaft, a second gear is fixedly arranged on the second rotating shaft, the second gear is meshed with the first gear, and the third rotating shaft is in synchronous transmission with the second rotating shaft through a synchronous belt;

at present, when parts of automobile products are coated, the inner side and the outer side of a workpiece need to be coated, if the inner side and the outer side of the workpiece are respectively coated in a rolling way, the working procedures are increased, and the production efficiency is reduced; when the double-sided coating machine works, a workpiece is placed on a feeding disc station, the air cylinder is started, the feeding disc moves upwards from the direction right below the double-sided coating mechanism, the feeding disc moves upwards to enable the workpiece on the feeding disc to move upwards to the outer side of the horizontal direction of the rotating piece, when the feeding disc moves upwards to a coating position, the clamping unit automatically cooperates to clamp and position the workpiece, after the workpiece is clamped and positioned, the third gear rotates to drive the first gear to rotate, the first gear drives the second gear to rotate, the rotating directions of the first gear and the third gear are opposite, the rotating piece rotates to drive the workpiece to rotate, the second gear and the second coating are coaxially arranged, the second coating also starts to rotate, the rotating direction is opposite to that of the workpiece, and the rotating direction of the third rotating shaft is opposite to that of the workpiece because the third rotating shaft is connected with the second rotating shaft through the synchronous belt, the third rotating shaft is connected with the mounting ring for fixing the first coating through a fourth gear and a fifth gear, so that the first coating and the workpiece have the same rotation direction but generate differential speed, the uniform coating of the inner wall of the workpiece is realized, when the first coating on the outer side of the rotating part rolls and coats the inner side of the workpiece, the second coating on the second rotating shaft also rolls and coats the outer side of the workpiece uniformly, so that the aim of automatically coating the two sides of the workpiece is fulfilled, when the workpiece is rolled and coated, the workpiece rotates, the first coating rotates but has differential speed, so the inner wall of the workpiece can be continuously contacted with the first coating and coated, the condition of uneven coating on the inner wall of the workpiece can not occur, meanwhile, in the process of smearing the workpiece, the second coating rotates automatically to smear the paint on the second coating to the outer side of the workpiece uniformly, the rotating directions of the second coating and the workpiece are opposite, the condition that the outer wall of the workpiece is smeared non-uniformly is avoided, and the coating quality is good while the coating efficiency of the workpiece is ensured;

remarking: the first coating and the workpiece are in the same direction, but the specific principle of generating differential speed is as follows: the fourth gear, the fifth gear and the mounting ring for fixing the first coating form a planetary gear train, and the rotating speed of the fourth gear is as follows: the carrier ring rotational speed ═ - (carrier ring tooth count: fourth gear tooth count), because the third axis of rotation is synchronous with the second axis of rotation through the synchronous belt, so the rotational speed of the fourth gear is the second gear rotational speed, second gear rotational speed: first gear speed ═ - (first gear tooth count: second gear tooth count), summarized above: first gear rotational speed: the collar rotational speed is (second gear tooth number mounting ring tooth number)/(first gear tooth number fourth gear tooth number), can make first coating and work piece rotate through setting up the tooth number and produce the differential.

As a further scheme of the invention, the double-sided coating mechanism is arranged along the circumferential direction of the disc-shaped rack at intervals, the first gear is meshed with a third gear which is rotatably arranged on the rack, and the third gear is externally connected with a driving motor; through setting up two-sided coating mechanism along discoid frame circumference interval, utilize driving motor drive third gear to drive multiunit two-sided coating mechanism simultaneous working, can carry out simultaneous coating to a plurality of work pieces, further promote the efficiency of work piece application.

As a further scheme of the invention, the clamping unit comprises a clamping element, a plurality of first sliding grooves are formed in the circumferential direction of the side surface of the rotating element at equal intervals, the clamping element is assembled in each first sliding groove in a sliding manner, and the clamping element is connected with the rotating element through a first compression spring; when the clamping piece is moved to the outer side of the rotating piece, the first compression spring pulls the clamping piece to move inwards along the radial direction of the rotating piece, and the workpiece located on the outer side of the rotating piece is clamped on the rotating piece. The clamping unit has a simple structure, is compactly matched with the rotating piece, is beneficial to quickly finishing the clamping and positioning work of the workpiece, and indirectly improves the coating efficiency of the workpiece.

As a further scheme of the invention, a second sliding groove is further formed in the peripheral surface of the rotating member in the vertical direction, a sliding member is slidably mounted in the second sliding groove and is also slidably connected with the clamping member, a vacancy part is formed in the sliding member, and one end, far away from the feeding plate, of the sliding member is fixedly connected with the first gear through a second compression spring; when the workpiece is moved upwards to the outer side of the horizontal direction of the rotating part, the vacant part on the sliding part is just moved to the position of the clamping part, because the clamping part and the rotating part are connected through the first compression spring, the first compression spring always has a pulling force along the radial direction of the rotating part, and the clamping part can move inwards along the radial direction of the rotating part to clamp the edge of the workpiece, the workpiece is clamped on the rotating piece, so that clamping and positioning of the workpiece are realized. The clamping machine has the advantages that the clamping machine can be used for judging the clamping time of the clamping piece by means of the movement of the feeding plate, the clamping piece can be clamped on the double-sided coating mechanism at the position of the workpiece, the clamping machine is simple and stable, the clamping time is not required to be judged manually, and the coating efficiency is improved.

As a further scheme of the invention, a first wedge surface is arranged on one side surface of the vacant part, which is far away from the feeding plate; during operation, the vacancy part of the sliding part is just located at the position of the clamping part, and the clamping part is pulled by the first compression spring to enable the clamping part to fall into the vacancy part, so that the clamping part generates radial displacement along the rotating part, and the effect of clamping a workpiece is achieved. According to the invention, the first wedge surface is arranged on the side surface of one end of the vacant part far away from the feeding plate, so that the clamping piece can move smoothly when falling into the vacant part, and thus the clamping piece slowly clamps the workpiece, the workpiece is protected, and unnecessary loss of the workpiece is avoided.

As a further scheme of the invention, a material supplementing bin mounted on the rack is arranged below the third gear, the material supplementing bin is used for supplementing consumed paint to the inner side coating unit and the outer side coating unit when a workpiece moves to a paint position of the double-sided coating mechanism, the material supplementing bin is cylindrical, an extrusion piece is coaxially and slidably mounted in the material supplementing bin, the extrusion piece is fixedly connected with the rack through an air spring and is positioned right above an air cylinder, the material supplementing bin is fixedly connected with a first hollow pipeline and a second hollow pipeline which are communicated with the air cylinder, the top ends of the first hollow pipeline and the second hollow pipeline respectively extend to the positions right above the first coating and the second coating, and the material supplementing bin is connected with a material containing vessel fixed at the top of the rack through pipelines; when the automatic coating feeding device works, because the automatic processing efficiency of the automatic coating feeding device is high, the consumption of coating is very quick, the automatic coating feeding device needs to be stopped frequently for feeding, and if the automatic coating feeding device is stopped frequently for feeding the consumed coating to the inner coating unit and the outer coating unit, the production efficiency is greatly lower, so that the automatic coating feeding device needs to automatically feed a first coating and a second coating while automatically coating the inner side and the outer side of a workpiece The hollow pipeline of second gets into first coating and second coating respectively, and when the extruded article reset, the flourishing storage container at frame top can be filled up again and mend the feed bin so that it is reinforced next time, and whole process realizes carrying out automatic application to the work piece inside and outside when, and automatic feed supplement avoids shutting down the feed supplement, reduces production efficiency.

As a further scheme of the invention, the top parts of the first coating and the second coating are respectively provided with a first liquid containing groove and a second liquid containing groove; according to the invention, the friction between the first coating and the workpiece, the second coating and the workpiece is utilized to roll and coat the coating on the surface of the workpiece, so that the coating is consumed, the first coating and the second coating are respectively provided with the first liquid containing groove and the second liquid containing groove for containing the coating, the coating can be uniformly permeated into the first coating and the second coating, and the uniformity of the coating is ensured.

As a further scheme of the invention, the middle positions of the first liquid containing groove and the second liquid containing groove are respectively positioned right below the top ends of the first hollow pipeline and the second hollow pipeline; the middle positions of the first liquid containing groove and the second liquid containing groove are respectively arranged under the tops of the first hollow pipeline and the second hollow pipeline, so that the coating can be accurately guided into the first liquid containing groove and the second liquid containing groove during automatic feeding every time, and the coating is guaranteed not to be wasted, and the coating is guaranteed not to splash to influence the coating quality of a workpiece when the filling is avoided.

As a further aspect of the present invention, the second coating layer is made of elastic cotton; the invention uses elastic cotton to avoid damaging the second coating when the workpiece moves.

As a further aspect of the present invention, as shown in the drawings, the clamping portion on the clamping member is made of sponge, so that in operation, in order to avoid damage to the workpiece when the clamping member clamps the workpiece, the clamping portion on the clamping member of the present invention is made of sponge, so as to cause flexible impact when clamping the workpiece, protect the workpiece, and avoid unnecessary damage, and after coating is completed, the third gear stops rotating, so that the first gear and the second gear also stop rotating. The cylinder contracts downwards, the feeding disc moves downwards, and at the moment, the sliding part can slide downwards under the restoring force of the third spring, so that the clamping part can be separated from the vacancy part, and the workpiece is unlocked. The workpiece is restored with the feed tray, and the slider is also restored under the restoring force of the third spring.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the workpiece enters between the first coating and the second coating by utilizing the upward driving force of the feeding plate, when the workpiece reaches the coating position, the clamping piece can clamp and position the workpiece, so that the workpiece and the clamping piece rotate synchronously, the second rotating shaft and the third rotating shaft rotate synchronously through the external meshing of the first gear and the second gear, the third rotating shaft drives the first coating to rotate, so that the workpiece rotates at a differential speed with the first coating, the rotating directions of the workpiece and the second coating are opposite, and the first coating and the second coating synchronously coat the inner side wall and the outer side wall of the workpiece, thereby improving the coating efficiency of the workpiece;

2. according to the automatic coating machine, the extrusion piece is driven by the upward driving force of the feeding plate to compress the volume in the material supplementing bin, so that the coating in the material supplementing bin is extruded and respectively enters the first coating and the second coating through the first hollow pipeline and the second hollow pipeline, automatic material supplementing is realized while the inner side and the outer side of a workpiece are automatically coated, shutdown material supplementing is avoided, and the production efficiency is reduced;

3. according to the invention, the first liquid containing groove and the second liquid containing groove are respectively formed in the first coating and the second coating and used for containing the coating, so that the coating can uniformly permeate into the first coating and the second coating, and the uniformity of the coating is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of a first structure of an automatic integrated coating conveyor line according to the present invention;

FIG. 2 is a second schematic structural view of the automatic integrated coating conveyor line of the present invention;

FIG. 3 is a schematic structural view of the present invention after a third gear and a feeding bin are hidden;

FIG. 4 is a partial cross-sectional view of the dual-side coating mechanism of the present invention;

FIG. 5 is an enlarged view of a portion A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of the construction of the interior side coating unit of the present invention;

FIG. 7 is a schematic structural view of an outside coating unit according to the present invention;

FIG. 8 is a schematic view of a rotating member according to the present invention;

FIG. 9 is a schematic bottom view of the dual side coating mechanism of the present invention;

FIG. 10 is a partial cross-sectional view of the inboard coating unit of the present invention with the first coating hidden;

FIG. 11 is an enlarged view of a portion B of FIG. 10 in accordance with the present invention;

FIG. 12 is a schematic view of the assembly of the frame and single dual-sided coating mechanism of the present invention;

FIG. 13 is a cross-sectional view of a third gear, feed magazine and extrusion of the present invention;

FIG. 14 is a schematic view of the feed tray of the present invention;

fig. 15 is a partial enlarged view of the portion C of fig. 3 according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-workpiece, 2-feeding tray, 3-cylinder, 4-double-sided coating mechanism, 5-inner-side coating unit, 6-outer-side coating unit, 7-first rotating shaft, 8-first gear, 9-rotating member, 10-first coating, 10-1 first liquid containing groove, 11-first sliding groove, 12-clamping member, 13-first compression spring, 14-third gear, 15-second rotating shaft, 16-second coating, 16-1 second liquid containing groove, 17-second gear, 18-second sliding groove, 19-second compression spring, 20-mounting ring, 21-vacancy, 22-first wedge surface, 23-fifth gear, 24-material supplementing bin, 25-extruding member, 26-gas spring, 27-first hollow tube, 28-second hollow tube, 29-slide, 30-grip, 31-third rotation shaft, 32-timing belt, 33-fourth gear.

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.

Referring to fig. 1-15, the present invention provides a technical solution: a full-automatic integrated coating conveying line comprises a circular track-shaped feeding disc 2, wherein a plurality of annular workpieces 1 to be processed are arranged in the middle of the top surface of the feeding disc 2 at equal intervals, an air cylinder 3 fixedly connected with the inner side wall of the feeding disc 2 is vertically arranged at the circle center position of the feeding disc 2, the bottom of the air cylinder 3 is fixed at a working position, and a double-sided coating mechanism 4 is arranged above the feeding disc 2; the double-sided coating mechanism 4 comprises an inner-side coating unit 5 and an outer-side coating unit 6, the inner-side coating unit 5 comprises a third rotating shaft 31 rotatably mounted on the rack, a fourth gear 33 is fixedly mounted at the bottom end of the third rotating shaft 31, the third rotating shaft 31 is sleeved with a hollow first rotating shaft 7, a first gear 8 is fixedly mounted at the upper end of the first rotating shaft 7, a rotating part 9 fixedly sleeved on the first rotating shaft 7 is arranged below the first gear 8, the rotating part 9 is cylindrical, a fifth gear 23 is rotatably mounted at the bottom end of the rotating part 9, the fifth gear 23 is externally meshed with the fourth gear 33, a mounting ring 20 sleeved on the rotating part 9 is arranged on the outer side of the rotating part 9, an inner tooth surface meshed with the fifth gear 23 is arranged at the bottom of the mounting ring 20, a first coating layer 10 is fixedly mounted on the outer side surface of the mounting ring 20, a clamping unit is further arranged on the rotating part 9 and used for clamping the workpiece 1, the outer coating unit 6 comprises a second rotating shaft 15 which is rotatably installed on the rack, a second coating 16 is fixedly installed at one end, close to the feeding plate 2, of the second rotating shaft 15, a second gear 17 is fixedly installed on the second rotating shaft 15, the second gear 17 is meshed with the first gear 8, and a third rotating shaft 31 is in synchronous transmission with the second rotating shaft 15 through a synchronous belt 32;

at present, when parts of automobile products are coated, the inner side and the outer side of a workpiece 1 need to be coated, if the inner side and the outer side of the workpiece 1 are respectively coated in a rolling way, the working procedures are increased, and the production efficiency is reduced; when the double-side coating machine works, a workpiece 1 is placed on a feeding disc 2 station, a cylinder 3 is started, the feeding disc 2 moves upwards from the position right below a double-side coating mechanism 4, the feeding disc 2 moves upwards to enable the workpiece 1 on the feeding disc 2 to move upwards to the outer side of a horizontal direction of a rotating piece 9, when the feeding disc 2 moves upwards to a coating position, a clamping unit automatically cooperates to clamp and position the workpiece 1, after the workpiece 1 is clamped and positioned, a third gear 14 rotates to drive a first gear 8 to rotate, the first gear 8 drives a second gear 17 to rotate, the rotating directions of the first gear 8 and the third gear 14 are opposite, because the first gear 8 and the rotating piece 9 are coaxially arranged, the rotating piece 9 rotates to drive the workpiece 1 to start to rotate, the second gear 17 and a second coating 16 are coaxially arranged, the second coating 16 also starts to rotate and the rotating direction is opposite to that of the workpiece 1, and because a third rotating shaft 31 is connected with a second rotating shaft 15 through a synchronous belt 32, therefore, the rotation direction of the third rotating shaft 31 is opposite to that of the workpiece 1, the third rotating shaft 31 is connected with the mounting ring 20 for fixing the first coating 10 through the fourth gear 33 and the fifth gear 23, so that the first coating 10 and the workpiece 1 rotate in the same direction but generate differential speed, the uniform coating on the inner wall of the workpiece 1 is realized, when the first coating 10 on the outer side of the rotating part 9 rolls and coats the inner side of the workpiece 1, the second coating 16 on the second rotating shaft 15 also uniformly rolls and coats the outer side of the workpiece 1, the purpose of automatic double-sided coating of the workpiece 1 is realized, when the workpiece 1 is rolled and coated, the workpiece 1 rotates, the first coating 10 rotates but has differential speed, so that the inner wall of the workpiece 1 can be continuously coated with the first coating 10, the condition that the inner wall of the workpiece 1 is not uniformly coated can occur, and simultaneously, during the coating process of the workpiece 1, the second coating 16 rotates to uniformly coat the coating on the outer side of the workpiece 1, the rotating directions of the two parts are opposite, so that the condition that the outer wall of the workpiece 1 is coated unevenly is avoided, and the coating quality is good while the coating efficiency of the workpiece 1 is ensured;

remarking: the first coating 10 turns the same as the workpiece 1, but the differential speed is generated by the following specific principle: the fourth gear 33, the fifth gear 23 and the mount ring 20 to which the first coat 10 is fixed constitute a planetary gear train, and the rotation speed of the fourth gear 33: the rotation speed of the mounting ring 20 is equal to- (the number of teeth of the mounting ring 20: the number of teeth of the fourth gear 33), because the third rotating shaft 31 is synchronously driven with the second rotating shaft 15 by the synchronous belt 32, the rotation speed of the fourth gear 33 is equal to the rotation speed of the second gear 17, the rotation speed of the second gear 17: first gear 8 speed ═ - (first gear 8 tooth count: second gear 17 tooth count), summarized above: first gear 17 rotation speed: the rotation speed of the mounting ring 20 is equal to (the number of the second gear 17 teeth + the number of the mounting ring 20 teeth)/(the number of the first gear 17 teeth + the number of the fourth gear 33 teeth), and the first coating 10 and the workpiece 1 can rotate to generate differential speed by setting the number of the teeth.

As a further scheme of the invention, the double-sided coating mechanism 4 is arranged along the circumferential direction of the disc-shaped rack at intervals, the first gear 8 is meshed with a third gear 14 which is rotatably arranged on the rack, and the third gear 14 is externally connected with a driving motor; through setting up two-sided coating mechanism 4 along discoid frame circumference interval, utilize driving motor drive third gear 14 to drive multiunit two-sided coating mechanism 4 simultaneous working, can carry out the simultaneous coating to a plurality of work pieces 1, further promote the efficiency of work piece 1 application.

As a further scheme of the present invention, the clamping unit includes a clamping member 12, a plurality of first sliding grooves 11 are equidistantly formed along the circumferential direction of the side surface of the rotating member 9, the clamping member 12 is slidably assembled in each first sliding groove 11, and the clamping member 12 is connected with the rotating member 9 through a first compression spring 13; when the workpiece 1 is moved to the outer side of the rotating part 9, the first compression spring 13 pulls the clamping part 12 to move inwards along the radial direction of the rotating part 9 to clamp the workpiece 1 on the outer side of the rotating part 9. The clamping unit is simple in structure and compact in matching with the rotating piece 9, so that the clamping unit is beneficial to rapidly finishing the clamping and positioning work of the workpiece 1, and the coating efficiency of the workpiece 1 is indirectly improved.

As a further scheme of the present invention, a second sliding groove 18 is further formed in the circumferential surface of the rotating member 9 along the vertical direction, a sliding member 29 is slidably mounted in the second sliding groove 18, the sliding member 29 is further slidably connected with the clamping member 12, a gap 21 is formed in the sliding member 29, and one end of the sliding member 29, which is far away from the feeding tray 2, is fixedly connected with the first gear 8 through a second compression spring 19; in operation, it is necessary to clamp the workpiece 1 on the rotary member 9 when the workpiece 1 is just moved to the outside of the first coating 10, when the feed tray 2 is moved up to be in contact with the sliding member 29, the feed tray 2 slides upward against the sliding member 29 and compresses the second compression spring 19, when the sliding member 29 slides upward, because the sliding member 29 is slidably connected to the clamping member 12 and the clamping member 12 is slidably mounted in the radial direction of the rotary member 9, the clamping member 12 is not displaced in the radial direction of the rotary member 9, but slides relative to the sliding member 29 in the axial direction of the rotary member 9, when the workpiece 1 is moved up to the outside in the horizontal direction of the rotary member 9, the cutout 21 on the sliding member 29 is just moved to the position of the clamping member 12, because the clamping member 12 is connected to the rotary member 9 by the first compression spring 13, and the first compression spring 13 always exerts a pulling force on the clamping member 12 in, therefore, the clamping piece 12 moves inwards along the radial direction of the rotating piece 9 to clamp the edge of the workpiece 1, the workpiece 1 is clamped on the rotating piece 9, and the clamping and positioning of the workpiece 1 are realized. The structure utilizes the movement of the feeding plate 2 to judge the clamping time of the clamping piece 12, ensures that the clamping piece 12 can clamp the workpiece 1 at the position where the workpiece 1 is positioned on the double-sided coating mechanism 4, is simple and stable, does not need to manually judge the clamping time, and improves the coating efficiency.

As a further aspect of the present invention, a side surface of the hollow portion 21 away from the feeding tray 2 is provided with a first wedge surface 22. In operation, the hollow part 21 of the sliding part 29 is just at the position of the clamping part 12, and the clamping part 12 is pulled by the first compression spring 13 to drop the clamping part 12 in the hollow part 21, so that the clamping part 12 is displaced along the radial direction of the rotating part 9, and the effect of clamping the workpiece 1 is achieved. According to the invention, the first wedge surface 22 is arranged on the side surface of one end of the vacant part 21 far away from the feeding plate 2, so that the clamping piece 12 can move gently when falling into the vacant part 21, the clamping piece 12 can slowly clamp the workpiece 1, the workpiece 1 is protected, and unnecessary loss of the workpiece 1 is avoided.

As a further scheme of the present invention, a feeding bin 24 mounted on the frame is arranged below the third gear 14, the feeding bin 24 is used for feeding consumed paint to the inner side coating unit 5 and the outer side coating unit 6 when the workpiece 1 moves to the paint position of the double-side coating mechanism 4, the feeding bin 24 is cylindrical, an extrusion piece 25 is coaxially and slidably mounted in the feeding bin 24, the extrusion piece 25 is fixedly connected with the frame through a gas spring 26, the extrusion piece 25 is positioned right above the cylinder 3, the feeding bin 24 is fixedly connected with a first hollow pipeline 27 and a second hollow pipeline 28 communicated with the feeding bin, the top ends of the first hollow pipeline 27 and the second hollow pipeline 28 respectively extend to the right above the first coating 10 and the second coating 16, and the feeding bin 24 is connected with a material container fixed on the top of the frame through a pipeline; when the automatic coating machine works, because the automatic processing efficiency of the automatic coating machine is high, the consumption of coating is rapid, the machine is stopped frequently for material supplement, if the machine is stopped frequently for supplementing the consumed coating to the inner coating unit 5 and the outer coating unit 6, the production efficiency is greatly lower, the automatic coating machine automatically coats the inner side and the outer side of the workpiece 1, simultaneously, the automatic material supplement of the first coating 10 and the second coating 16 is needed, the invention is provided with the material supplement bin 24 which is arranged on the frame below the third gear 14, the material supplement bin 24 is positioned right above the first coating 10 and the second coating 16 through the first hollow pipeline 27 and the second hollow pipeline 28, when the air cylinder 3 drives the feeding tray 2 to move upwards, the air cylinder 3 moves upwards to contact with the extrusion piece 25 and drive the extrusion piece 25 to move upwards, because the extrusion piece 25 is coaxially and slidably arranged in the material supplement bin 24, the air spring 26 in the middle of the extrusion piece 25 is compressed, the extrusion piece 25 moves upwards to compress the volume in the material, like this the coating in the feed supplement storehouse 24 can be extruded and get into first coating 10 and second coating 16 respectively through first hollow pipeline 27, second hollow pipeline 28, when extruded article 25 resets, the flourishing storage container at frame top can be filled up feed supplement storehouse 24 again so that it is reinforced next time, whole process realizes carrying out automatic coating to the work piece 1 inside and outside when, and automatic feed supplement avoids shutting down the feed supplement, reduces production efficiency.

As a further scheme of the invention, the top parts of the first coating 10 and the second coating 16 are respectively provided with a first liquid containing groove 10-1 and a second liquid containing groove 16-1; according to the invention, the friction between the first coating 10 and the workpiece 1 and the friction between the second coating 16 and the workpiece 1 are utilized to roll and coat the coating on the surface of the workpiece 1, so that the coating is consumed, the first liquid containing groove 10-1 and the second liquid containing groove 16-1 are respectively formed in the first coating 10 and the second coating 16 for placing the coating, the coating can uniformly permeate into the first coating 10 and the second coating 16, and the uniformity of the coating is ensured.

As a further proposal of the invention, the middle positions of the first liquid containing groove 10-1 and the second liquid containing groove 16-1 are respectively positioned right below the top ends of the first hollow pipeline 27 and the second hollow pipeline 28; the middle positions of the first liquid containing groove 10-1 and the second liquid containing groove 16-1 are respectively arranged under the top ends of the first hollow pipeline 27 and the second hollow pipeline 28, so that the coating can be accurately guided into the first liquid containing groove 10-1 and the second liquid containing groove 16-1 during automatic feeding every time, and the coating is guaranteed not to waste and is prevented from splashing to influence the coating quality of a workpiece when the coating is not filled.

As a further aspect of the present invention, the second coating layer 16 is made of elastic cotton; the present invention uses resilient cotton to prevent damage to the second coating 16 when the workpiece 1 is moved.

As a further aspect of the present invention, as shown in fig. 11, the clamping portion 30 of the clamping member 12 is made of sponge, so as to avoid the damage of the workpiece 1 caused by the clamping member 12 clamping the workpiece 1 during operation, the clamping portion 30 of the clamping member 12 of the present invention is made of sponge, so that the workpiece 1 is flexibly impacted when clamping the workpiece, the workpiece 1 is protected, and unnecessary damage is avoided, and after finishing coating, the third gear 14 stops rotating, so that the first gear 8 and the second gear 17 also stop rotating. The cylinder 3 is contracted downward and the feed tray 2 is moved downward, and at this time, the slide member 29 is slid downward by the restoring force of the third spring, so that the clamping member 12 is disengaged from the cutout portion 21 and the workpiece 1 is unlocked. The workpiece 1 is restored with the feed tray 2, and the slider 29 is also restored by the restoring force of the third spring.

The working principle is as follows: in the invention, after the workpieces 1 are arranged on the feeding tray 2 at intervals, the feeding tray 2 is transferred to the position right below the double-sided coating mechanism 4. The feeding tray 2 is coaxially and fixedly arranged on the air cylinder 3, the air cylinder 3 extends to drive the feeding tray 2 to move upwards, and the workpiece 1 on the feeding tray 2 can move upwards to the outer side of the rotating part 9 in the horizontal direction. While the workpiece 1 moves upward, the tray bottom of the feed tray 2 comes into contact with the slider 29, and drives the slider 29 to slide upward and compress the second compression spring 19. When the sliding member 29 is slid upward, the clamping member 12 is slidably mounted along the rotating member 9 because the sliding member 29 is slidably connected to the clamping member 12. The clamping member 12 is not displaced in the radial direction of the rotating member 9 but is caused to slide relative to the sliding member 29 in the axial direction of the rotating member 9. When the workpiece 1 moves up to the horizontally outer side of the rotating member 9, the cutout portion 21 in the slide member 29 moves just to the position of the chucking member 12. Because the clamping piece 12 is connected with the rotating piece 9 through the first compression spring 13, the first compression spring 13 always has a pulling force on the clamping piece 12 along the radial direction of the rotating piece 9, the clamping piece 12 moves inwards along the radial direction of the rotating piece 9 to clamp the edge of the workpiece 1, the workpiece 1 is clamped on the rotating piece 9, the clamping and positioning of the workpiece 1 are realized, after the workpiece 1 is clamped and positioned, the third gear 14 rotates to drive the first gear 8 to rotate, the first gear 8 drives the second gear 17 to rotate, and the rotating directions of the first gear 8 and the third gear 14 are opposite, because the first gear 8 and the rotating piece 9 are coaxially arranged, the rotating piece 9 rotates to drive the workpiece 1 to start rotating, the second gear 17 and the second coating 16 are coaxially arranged, so the second coating 16 also starts rotating and rotates in the opposite direction to the workpiece 1, and because the third rotating shaft 31 and the second rotating shaft 15 are connected through the synchronous belt 32, therefore, the third rotating shaft 31 is connected to the mounting ring 20, to which the first coating 10 is fixed, through the fourth gear 33 and the fifth gear 23, in the opposite direction to the workpiece 1, so that the first coating 10 turns in the same direction as the workpiece 1, but at a different speed. Therefore, the first coating 10 on the outer side of the rotating part 9 is roll-coated on the inner side of the workpiece 1, and the second coating 16 on the second rotating shaft 15 is roll-coated on the outer side of the workpiece 1, so that the purpose of automatic coating is realized.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.