CN218048544U - Spraying device for vulcanizing machine - Google Patents

Abstract

The utility model discloses a spraying device for a vulcanizing machine, wherein the vulcanizing machine comprises a vulcanizing mould, which comprises an upper mould and a lower mould; the spraying device comprises an operation arm, a spray head assembly and a first translation device; the operation arm is of a long structure, and one end of the operation arm moves between the upper die and the lower die when moving along the length direction of the operation arm; the spray head assembly comprises a first group of spray heads, a second group of spray heads and a frame body; the first group of spray heads comprises a plurality of spray heads which are uniformly arranged in the same direction; the second group of spray heads comprises a plurality of spray heads which are uniformly arranged in the same direction; the first group of spray heads and the second group of spray heads are arranged in the same direction and have opposite spray nozzle directions and are fixed on the frame body; the spray head assembly is connected with one end of the operation arm through the first translation device, so that the spray head assembly can perform spraying operation on the upper die and the lower die along with the operation arm and can translate in the arrangement direction relative to the operation arm. The utility model discloses realize that the vulcanizer opens the die and back to last mould, the even spraying release agent of lower mould, especially the great mold core of die cavity degree of depth, improve product quality, protection curing mold.

Description

Spraying device for vulcanizing machine

Technical Field

The utility model belongs to the technical field of the film vulcanization, specifically speaking relates to a spraying device for vulcanizer.

Background

Hundreds of mold cores which are closely arranged according to a certain rule are arranged in a vulcanizing mold of the flat vulcanizing machine; a pair of vulcanization molds is divided into an upper part and a lower part which respectively correspond to a cavity part and a crown part of a product. Before the vulcanizing machine starts to vulcanize, a demolding agent needs to be uniformly sprayed on the inner sides of the upper part and the lower part of the vulcanizing mold, so that demolding is facilitated, the quality of vulcanized products is guaranteed, and the vulcanizing mold is prevented from being polluted.

The spraying of the release agent of the existing vulcanizing mould comprises manual operation and multi-nozzle automatic spraying. The labor intensity of manual operation is high, high-temperature burn is easy to occur, and the sprayed release agent is not uniform and cannot be sprayed into a deeper cavity mold core, so that the product quality and the cleanliness of a vulcanizing mold are influenced; in addition, the difference of worker operation is large, resulting in insufficient stability of product quality.

The distance between adjacent spray heads of the multi-spray-head automatic spraying is larger than the distance between the mold cores in each row of the mold. The deeper cavity needs a smaller spray angle of the spray head, so that the deeper cavity mold core cannot be uniformly and completely and effectively sprayed.

Disclosure of Invention

The utility model provides a spraying device for vulcanizer realizes that the vulcanizer die sinking back is to last mould, lower mould evenly spray release agent, especially darker die cavity mould in-core, improves vulcanization product quality, protection vulcanization mould utensil.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

a spraying device for a vulcanizing machine comprises a vulcanizing mold, wherein the vulcanizing mold comprises an upper mold and a lower mold, and comprises an operation arm, a spray head assembly and a first translation device;

the operation arm is of a long structure, and one end of the operation arm moves between the upper die and the lower die when the operation arm moves along the length direction of the operation arm;

the spray head assembly comprises a first group of spray heads, a second group of spray heads and a frame body; the first group of spray heads comprise a plurality of spray heads which are uniformly arranged in the same direction; the second group of spray heads comprises a plurality of spray heads which are uniformly arranged in the same direction; the arrangement directions of the first group of spray heads and the second group of spray heads are the same, the directions of the spray nozzles are opposite, and the first group of spray heads and the second group of spray heads are fixed on the frame body;

the sprayer component is connected with one end of the operation arm through the first translation device, so that the sprayer component can be used for spraying the upper die and the lower die along with the operation arm and can translate relative to the operation arm in the arrangement direction.

According to some embodiments of the present application, the first translation device includes at least one guide rail and at least one sliding block and a driving member, which are slidably mounted and adapted to the guide rail;

the guide rail and the slide block are respectively fixedly connected with the frame body and the end part of the operation arm and are arranged together;

the driving piece is a linear telescopic power element and is arranged along the arrangement direction, and two ends of the driving piece are respectively connected with the frame body and the operation arm.

According to some embodiments of the application, the frame body comprises at least one connecting part, which is positioned outside the end part of the guide rail and is connected with one end of the driving part in a single-shaft rotating manner;

the other end of the driving piece tends to be perpendicular to the length direction of the working arm and is fixedly connected with the working arm.

According to some embodiments of the application, the drive member is a telescopic cylinder or a telescopic hydraulic cylinder or an electric push rod.

According to some embodiments of the present application, the number of the connecting portions is two, and the two connecting portions are respectively disposed at outer sides of two ends of the guide rail; the first limiting part and the second limiting part are respectively positioned at two sides of the operation arm, are fixedly connected with the operation arm and correspond to the connecting parts;

when the spray head assembly is sprayed between the upper die and the lower die from outside to inside, the first limiting parts are abutted against the corresponding connecting parts; when the spray head assembly is used for spraying between the upper die and the lower die from inside to outside, the second limiting part is abutted to the corresponding connecting part.

According to some embodiments of the present application, further comprising a support plate, which is a flat plate structure; one side surface of the guide rail faces the end part of the operation arm and is connected with the operation arm, and the other side surface of the guide rail is fixedly connected with the guide rail;

the first limiting part and the second limiting part are respectively arranged at two ends of the supporting plate.

According to some embodiments of the present application, further comprising a rotating shaft assembly, a connecting plate;

the connecting plate is of a flat plate structure and is fixedly connected with the end part of the working arm;

the supporting plate and the connecting plate are connected in a sticking mode through the side face of the rotating shaft component, so that the supporting plate can rotate relative to the connecting plate.

According to some embodiments of the present application, the rotating shaft assembly includes a rotating shaft, a fixing bolt, a brace, a retainer ring;

the rotating shaft is a reducer shaft and comprises a small-diameter end and a large-diameter end; the small-diameter end is provided with an axial screw hole; an annular groove matched with the retainer ring in installation is formed in the side face of the large-diameter end;

a first through hole matched with the small-diameter end in installation is formed in the connecting plate; the supporting sheet is of a circular plate structure with the diameter larger than that of the first through hole and comprises a second through hole matched with the bolt in an installing mode; a third through hole matched with the large-diameter end in installation is formed in the supporting plate;

the small-diameter end is installed in the first through hole; the support sheet is positioned on the outer side of the tail end of the small-diameter end; the fixing bolt penetrates through the second through hole and is in threaded connection with the screw hole; the large-diameter end is mounted in the third through hole; the annular groove is positioned on the outer side of the side face, far away from the connecting plate, of the supporting plate; the retainer ring is mounted in the annular groove.

According to some embodiments of the present application, further comprising at least one receiving box fixedly connected with the frame body, including an opening; the opening faces the upper die and/or the lower die;

the receiving box covers the spray head assembly and the first translation device; the nozzle is located within the receiving box.

According to some embodiments of the present application, the apparatus further comprises a fuel injection assembly comprising an upper nozzle, a lower nozzle, and a second translation device; the upper sprayer and the lower sprayer are respectively in the same direction as the nozzles of the first group of sprayers and the second group of sprayers, the upper sprayer and the lower sprayer are fixedly connected, and the second translation device is connected with the rack body to enable the rack body to translate along the arrangement direction, so that the upper sprayer and the lower sprayer can be used for assisting in deoiling.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model discloses a spraying device for a vulcanizing machine, which comprises a first group of spray heads and a second group of spray heads which are upward and downward and are respectively used for spraying an upper die and a lower die of a vulcanizing die; because the upper die or the lower die is provided with the cavity with larger depth, a smaller spray angle is needed for spraying, and the distance between the die cores is smaller than the distance between the adjacent spray heads; so, the mutual spaced mold core of spraying during accessible shower nozzle subassembly outside-in spraying in this scheme removes a mold core distance of shower nozzle subassembly before the spraying from inside to outside, carries out the spraying to the mold core that the spraying was listed as, but manifold cycles goes on, realizes improving vulcanization product quality to the even complete spraying operation of the darker mould of die cavity, prevents that the film from polluting the mould, protects vulcanization mould utensil, reduces the maintenance cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are 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 structural view of an embodiment of a spraying device for a vulcanizer according to the present invention;

FIG. 2 is an enlarged schematic view of a portion of the embodiment of the spray device of FIG. 1;

fig. 3 is a schematic structural view of an embodiment of a spraying device according to the present invention;

fig. 4 is a schematic structural view of an embodiment of a spraying device according to the present invention;

fig. 5 is a schematic structural view of an embodiment of a spraying device provided by the present invention;

fig. 6 is a schematic cross-sectional view of an embodiment of a spray coating device according to the present invention;

fig. 7 is a schematic partial cross-sectional view of an embodiment of a spray coating device according to the present invention.

In the figure, the position of the upper end of the main shaft,

1. a showerhead assembly; 2. a first translation device; 3. a working arm; 4. a receiving box; 5. an oil injection assembly; 6. a support plate; 7. a connecting plate; 8. a rotating shaft assembly; 11. a first set of spray heads; 12. a second group of spray heads; 13. a frame body; 131. a connecting portion; 14. a nozzle; 21. a guide rail; 22. a slider; 23. a drive member; 241. a first limit piece; 242. a second limiting member; 41. an opening; 51. an upper spray head; 52. a lower nozzle; 53. a second translation device; 54. a drag chain; 61. a third through hole; 71. a first through hole; 81. a rotating shaft; 811. a large diameter end; 812. a small diameter end; 813. an annular groove; 814. a screw hole; 82. fixing the bolt; 83. supporting the sheet; 831. a second through hole; 84. a retainer ring; D. and (4) arrangement direction.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1, 2, 3, 4 and 5, the utility model discloses a spraying device for a vulcanizing machine. The vulcanizing machine comprises a vulcanizing mold, which comprises an upper mold and a lower mold, and is used for placing the rubber sheet between the upper mold and the lower mold of the vulcanizing mold to be vulcanized to generate a vulcanized product.

The spraying device is used for spraying the release agent on the cavity of the upper die and the lower die when the vulcanizing die is opened, so that the raw rubber sheet is easier to fall off from the vulcanizing die after being vulcanized, the vulcanizing die is not polluted, and the vulcanizing die is protected.

The spraying device comprises a spray head component 1, a first translation device 2 and an operation arm 3; the operation arm 3 is a long structure, one end of the operation arm is connected with the spray head component 1, and the operation arm can move along the length direction of the operation arm to drive the spray head component 1 to move between the upper die and the lower die so as to spray a release agent to the cavities of the upper die and the lower die.

The spray head assembly 1 comprises a first group of spray heads 11, a second group of spray heads 12 and a frame body 13; the first group of spray heads 11 comprises a plurality of spray heads with nozzles 14 in the same direction and uniformly arranged; the second group of spray heads 12 comprises a plurality of spray heads with nozzles 14 in the same direction and uniformly arranged; the arrangement directions D of the first group of spray heads 11 and the second group of spray heads 12 are the same, and the directions of the spray nozzles 14 are opposite, and the first group of spray heads and the second group of spray heads are fixed on the frame body 13; the first group of nozzles 11 and the second group of nozzles 12 which are uniformly arranged face the upper die and the lower die respectively, and do not completely cover the whole width of the upper die and the lower die.

The spray head assembly 1 is connected with one end of the operation arm 3 through the first translation device 2, so that the spray head assembly 1 can perform spraying operation on the upper die and the lower die along with the operation arm 3 and can translate in the arrangement direction D relative to the operation arm 3.

The spraying device for the vulcanizing machine of the utility model adjusts the spraying angle of the nozzle 14 of each spray head towards the upper die or the lower die to be smaller in order to adapt to the spraying effect of the release agent of the deeper cavity of the upper die or the lower die, so that the spraying depth is deeper, and the spraying requirement is met; but the spraying angle is adjusted to be small, and the spraying range of the spray head is reduced, so that the problem that the adjacent rows of mold cores can not be effectively sprayed is solved; when the operation arm 3 drives the spray head component 1 to complete one-way spraying operation, the mold cores at intervals of the vulcanizing mold meet the spraying requirement; the first translation device 2 translates the nozzle device for a distance of a mold core, and single-pass spraying is carried out to realize spraying of other mold cores which are not sprayed in a row, and the spraying process can be carried out for multiple times until spraying of all rows of mold cores is completed, so that the purpose of completely and uniformly spraying the release agent is achieved; the spraying quality is improved, the quality of vulcanized products is further improved, the vulcanizing mould is protected, and the maintenance cost of the mould is reduced.

The specific structure and principle of the present invention will be described in detail with reference to the specific embodiments.

In an embodiment, referring to fig. 1, 2, 3, 4, and 5, the first translation device 2 includes at least one guide rail 21 and at least one sliding block 22 slidably fitted to the guide rail 21, and a driving member 23 for driving the sliding block 22 to slide along the guide rail 21.

The guide rail 21 is fixedly connected with the operation arm 3; the slide block 22 is fixedly connected with the frame body 13; the slider 22 is slidably mounted on the guide rail 21.

The driving member 23 is a linear telescopic power element, and is arranged along the arrangement direction D, and two ends of the driving member are respectively connected with the frame body 13 and the working arm 3; when the driving member 23 extends, the frame body 13 is driven to move along one direction of the guide rail 21 along with the slide block 22; when the driving member 23 is shortened, the frame body 13 is driven to move along the slide block 22 in the opposite direction of the guide rail 21, so that the frame body 13 is driven to translate in the arrangement direction D relative to the working arm 3.

Of course, the guide rail 21 may be fixedly connected to the frame body 13, and the slider 22 may be fixedly connected to the work arm 3, as long as the slider 22 is translated along the guide rail 21 when the driving member 23 is extended or shortened.

In some embodiments, referring to fig. 1, 2, 3, 4, 5, the driving member 23 is a telescopic cylinder or a telescopic hydraulic cylinder or an electric push rod, or other equipment device with linear telescopic action.

In some embodiments, referring to fig. 1, 2, 3, 4 and 5, the frame body 13 includes at least one connecting portion 131 located outside the end of the guide rail 21 and connected to one end of the driving member 23 in a single-shaft rotation manner.

The other end of the drive member 23 is intended to be fixedly connected to the work jib 3, perpendicular to the length direction of the work jib 3.

The spraying device of the embodiment realizes that the frame body 13 is connected with the operation arm 3 through the driving piece 23 in the direction which tends to be perpendicular to the length direction of the operation arm 3 by arranging the connecting part 131 on the frame body 13, and realizes the translation of the spray head assembly 1 in the direction which tends to be perpendicular to the length direction of the operation arm 3. The connecting portion 131 may be an integrally formed part of the frame body 13 or may be assembled.

Of course, the arrangement direction D of the spray head assemblies 1 can also be obliquely arranged with the length direction of the operation arm 3, so that when the spray head assemblies 1 enter the vulcanizing mold along the length direction of the operation arm 3, the distance between adjacent spray heads is shortened, and the spraying of adjacent or less-spaced mold core cavities can be completed in a single pass.

In some embodiments, referring to fig. 1, 2, 3, 4, and 5, the number of the connection portions 131 is two, and the two connection portions are respectively disposed outside both ends of the guide rail 21.

The spraying device further includes a first limiting member 241 and a second limiting member 242, which are respectively located at two sides of the operation arm 3, are fixedly connected to the operation arm 3, respectively correspond to the connecting portions 131 located at the outer sides of the two ends of the guide rail 21, and limit the translational position of the nozzle assembly 1 by the abutting of the first limiting member and the corresponding connecting portions 131.

Specifically, when the spray head assembly 1 performs the spraying operation between the upper mold and the lower mold from the outside to the inside in the direction of entering the vulcanizing mold, the first limiting member 241 abuts against the corresponding connecting portion 131; when the spraying operation is performed between the upper mold and the lower mold from inside to outside in the direction in which the spray head assembly 1 enters the vulcanized grinding tool, the second limiting part 242 abuts against the corresponding connecting part 131.

In this embodiment, the nozzle assembly 1 is set to perform spraying on the mold release agent of the vulcanizing mold in a double-pass manner, and the first limiting member 241, the second limiting member 242 and the corresponding connecting portions 131 are matched to limit the translational position, so that the accuracy and reliability of spraying by the spraying device are improved.

Of course, when the spraying device needs three or more than three single passes to complete the spraying operation, and enters the vulcanizing mold from outside to inside for the first time to perform the spraying operation, the nozzle assembly 1 is close to one side of the vulcanizing mold, and the first limiting piece 241 is abutted to the corresponding connecting part 131; when the spraying operation is performed for the last time, the nozzle assembly 1 is close to the other side of the vulcanizing mold, and the second limiting member 242 abuts against the corresponding connecting portion 131. The positions of the spray head assembly 1 relative to the two sides of the vulcanizing mold are limited, and a vulcanizing machine is protected.

In some embodiments, referring to fig. 1, 2, 3, 4, 5, the spray coating device further comprises a support plate 6, which is a flat plate structure; one side of the end facing the arm 3 is connected to the arm 3, and the other side is fixedly connected to the guide rail 21.

The first limiting member 241 and the second limiting member 242 are respectively disposed at two ends of the supporting plate 6.

In some embodiments, referring to fig. 1, 2, 3, 4 and 5, the first limiting member 241 and the second limiting member 242 are bolts with heads connected to the ends of the supporting plate 6 facing the connecting portion 131.

In some embodiments, referring to fig. 1, 2, 3, 4, 5, 6, the spray coating device further comprises a rotating shaft assembly 8, a connecting plate 7.

The connecting plate 7 is of a flat plate structure and is fixedly connected with the end part of the operation arm 3; the supporting plate 6 is attached to the connecting plate 7 through the side of the rotating shaft assembly 8, so that the supporting plate 6 can rotate relative to the connecting plate 7.

In the embodiment, the directions of the nozzles 14 of the first group of spray heads 11 and the second group of spray heads 12 can be adjusted by rotating, for example, the nozzles 14 of the first group of spray heads 11 face the upper die, the nozzles 14 of the second group of spray heads 12 face the lower die, the nozzles 14 of the first group of spray heads 11 face the lower die, and the nozzles 14 of the second group of spray heads 12 face the upper die by relative rotation of the supporting plate 6 and the connecting plate 7, so that the mold suitable for a deeper cavity of a vulcanized product is an upper die or a lower die, and the adaptability of the spraying device is improved.

Of course, the support plate 6 can be fixed to the connecting plate 7 by connecting the support plate 6 and the connecting plate 7 to each other by screws or bolts after rotating relative to the connecting plate 7.

In some embodiments, referring to fig. 6 and 7, the rotating shaft assembly 8 includes a rotating shaft 81, a fixing bolt 82, a brace 83, and a retainer ring 84.

The rotating shaft 81 is a reducer shaft and comprises a large-diameter end 811 and a small-diameter end 812; an axial threaded bore 814 is provided at the minor diameter end 812; an annular groove 813 adapted to the retainer ring 84 is provided on the side surface of the large diameter end 811.

The connecting plate 7 is provided with a first through hole 71 which is matched with the small-diameter end 812 in an installing way; the supporting sheet 83 is a circular plate structure with the diameter larger than that of the first through hole 71 and comprises a second through hole 831 matched with the fixing bolt 82 in an installing mode; the supporting plate 6 is provided with a large-diameter end 811 and a third through hole 61 fitted to the large-diameter end 811.

The small diameter end 812 is installed in the first through hole 71; the spreader 83 is located outside the end of the small diameter end 812; the fixing bolt 82 is screwed into the screw hole 814 through the second through hole 831 to fix the rotation shaft 81 relative to the connection plate 7 in the axial direction thereof. The large diameter end 811 is mounted in the third through hole 61; the annular groove 813 is positioned on the outer side of the side surface of the supporting plate 6 and the connecting plate 7; the retainer ring 84 is fitted in the annular groove 813 so that the rotating shaft 81 is fixed in the axial direction thereof with respect to the support plate 6, and the connecting plate 7 and the support plate 6 are fixed to each other in the axial direction of the rotating shaft 81 and are rotatable about the rotating shaft 81.

Of course, other configurations of the rotating shaft assembly 8 that allow the connecting plate 7 and the supporting plate 6 to rotate relative to each other, such as a bolt connection, may be used.

However, the embodiment has the function of fixing the support plate 6 and the connecting plate 7 in the axial direction relative to the rotating shaft 81 independently relative to the bolt connection, and the rotating shaft 81 and the connecting plate 7 can be installed firstly and fixed axially to each other without falling; then the rotating shaft 81 is connected with the supporting plate 6, so that the installation is convenient; in addition, the axial fixed connection between the rotating shaft 81 and the supporting plate 6 is realized through the matching of the annular groove 813 and the retaining ring 84, and the disassembly is convenient.

In some embodiments, referring to fig. 1, 2, and 7, the spray coating device further comprises at least one receiving box 4 fixedly connected to the frame body 13, including an opening 41; during the spraying operation, the opening 41 faces the upper and/or lower mold and receives the release agent, which is condensed to larger particles and falls.

The receiving box 4 covers the head assembly 1 and the first translation device 2, and ensures the cleaning of the head assembly 1 and the first translation device 2. The nozzle 14 is positioned in the receiving box 4 for normal spraying.

In some embodiments, referring to fig. 1, 2, 3, 4, 5, 6, the spray coating device further comprises a fuel injection assembly 5 comprising an upper spray head 51, a lower spray head 52, a second translation device 53; the upper spray head 51 and the lower spray head 52 are respectively in the same direction as the nozzles 14 of the first group of spray heads 11 and the second group of spray heads 12, the upper spray head 51 and the lower spray head 52 are fixedly connected, and the upper spray head 51 and the lower spray head 52 are connected with the frame body 13 through the second translation device 53, so that the oil injection assembly 5 can translate along the arrangement direction D relative to the frame body 13, and the oil injection assembly 5 can translate in a reciprocating manner in the arrangement direction D when the spraying device does not spray the release agent to assist in deoiling of the spraying of the vulcanization mold.

The spraying device of the embodiment has the function of spraying deoiling assistance, so that the release agent and the spraying equipment for assisting deoiling are combined into a whole, the cost is reduced, and the spraying efficiency is increased.

Alternatively, the second translation device 53 may be a linear motor structure, powered by a drag chain 54.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of indicated technical features is significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a spraying device for vulcanizer, the vulcanizer includes the vulcanization mould utensil, and it includes mould, lower mould, its characterized in that includes:

the working arm is of a long structure and is used for moving between the upper die and the lower die when one end of the working arm moves along the length direction of the working arm;

the spray head assembly comprises a first group of spray heads, a second group of spray heads and a frame body; the first group of spray heads comprise a plurality of spray heads which are uniformly arranged in the same direction; the second group of spray heads comprises a plurality of spray heads which are uniformly arranged in the same direction; the first group of spray heads and the second group of spray heads are arranged in the same direction, the directions of the spray nozzles are opposite, and the first group of spray heads and the second group of spray heads are fixed on the frame body;

the first translation device is used for connecting the spray head assembly with one end of the operation arm, so that the spray head assembly can move along with the operation arm to spray the upper die and the lower die, and can move in the arrangement direction relatively to the operation arm.

2. The spray coating device of claim 1 wherein said first translation means comprises at least one guide rail and at least one slide, drive member slidably mounted in said guide rail;

the guide rail and the sliding block are respectively fixedly connected with the frame body and the end part of the operation arm and are arranged together;

the driving piece is a linear telescopic power element and is arranged along the arrangement direction, and two ends of the driving piece are respectively connected with the frame body and the operation arm.

3. A spray assembly according to claim 2 wherein said frame includes at least one connecting portion located outwardly of said end of said rail and pivotally connected to one end of said drive member;

the other end of the driving piece tends to be perpendicular to the length direction of the working arm and is fixedly connected with the working arm.

4. A spray assembly according to claim 2 wherein said drive member is a telescopic cylinder or a telescopic hydraulic cylinder or an electric push rod.

5. The spraying device according to claim 3, wherein the number of the connecting parts is two, and the two connecting parts are respectively arranged at the outer sides of the two ends of the guide rail; the first limiting part and the second limiting part are respectively positioned at two sides of the operation arm, are fixedly connected with the operation arm and correspond to the connecting parts;

when the spray head assembly is sprayed between the upper die and the lower die from outside to inside, the first limiting parts are abutted against the corresponding connecting parts; when the spray head assembly is used for spraying between the upper die and the lower die from inside to outside, the second limiting part is abutted to the corresponding connecting part.

6. The spray assembly of claim 5 further comprising a support plate having a flat plate configuration; one side surface of the guide rail faces the end part of the operation arm and is connected with the operation arm, and the other side surface of the guide rail is fixedly connected with the guide rail;

the first limiting part and the second limiting part are respectively arranged at two ends of the supporting plate.

7. The spray coating device of claim 6 further comprising a rotating shaft assembly, a connecting plate;

the connecting plate is of a flat plate structure and is fixedly connected with the end part of the working arm;

the supporting plate and the connecting plate are connected in a sticking mode through the side face of the rotating shaft component, so that the supporting plate can rotate relative to the connecting plate.

8. The spray coating device of claim 7 wherein said rotatable shaft assembly comprises a shaft, a retaining bolt, a brace, a retainer ring;

the rotating shaft is a reducer shaft and comprises a small-diameter end and a large-diameter end; the small-diameter end is provided with an axial screw hole; an annular groove matched with the retainer ring in installation is formed in the side face of the large-diameter end;

a first through hole matched with the small-diameter end in mounting is formed in the connecting plate; the supporting sheet is of a circular plate structure with the diameter larger than that of the first through hole and comprises a second through hole matched with the bolt in an installing mode; a third through hole matched with the large-diameter end in installation is formed in the supporting plate;

the small-diameter end is installed in the first through hole; the supporting sheet is positioned on the outer side of the tail end of the small-diameter end; the fixing bolt penetrates through the second through hole and is in threaded connection with the screw hole; the large-diameter end is mounted in the third through hole; the annular groove is positioned on the outer side of the side face, far away from the connecting plate, of the supporting plate; the retainer ring is mounted in the annular groove.

9. The spray coating device of any one of claims 1 to 8 further comprising at least one receiving box fixedly connected to said frame body, comprising an opening; the opening faces the upper die and/or the lower die;

the receiving box covers the spray head assembly and the first translation device; the nozzle is located within the receiving box.

10. The spray assembly of claim 9 further comprising a fuel injection assembly including an upper nozzle, a lower nozzle, a second translation device; the upper sprayer and the lower sprayer are respectively in the same direction as the nozzles of the first group of sprayers and the second group of sprayers, the upper sprayer and the lower sprayer are fixedly connected, and the second translation device is connected with the rack body to enable the rack body to translate along the arrangement direction relatively, so that the upper sprayer and the lower sprayer can be used for assisting in deoiling.

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