CN212883268U

CN212883268U - Extrusion coating device for coating machine

Info

Publication number: CN212883268U
Application number: CN202021655495.9U
Authority: CN
Inventors: 刘富生
Original assignee: Foshan Lida Lisu New Material Co ltd
Current assignee: Foshan Lida Lisu New Material Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-04-06
Anticipated expiration: 2030-08-11

Abstract

The utility model discloses an extrude coating unit for coating machine, the frame rotates and is connected with the coating back roll, the coating back roll corresponds and is equipped with extrusion tooling, the lower extreme and the extrusion tooling fixed connection of perpendicular jib, the upper end and the entablature fixed connection of perpendicular jib, two upper longitudinal beams are fixed connection respectively at the front and back both ends of entablature, the left and right ends of upper longitudinal beam rotate respectively and are connected with the wheel, the frame is equipped with the upper horizontal pole, the last side fixed connection of upper horizontal pole has the track of arranging along the fore-and-aft direction, wheel and track adaptation roll connection, the movable block passes through screw fixed connection with the mould gallows, fixed block and frame fixed connection, the one end and the movable block spiro union of screw shaft, the other end that the screw shaft corresponds is connected with the worm gear reduction gear, the middle part and the fixed block of screw shaft rotate and are connected, the screw shaft is on a; the utility model discloses an extrude coating device and be favorable to improving coating quality.

Description

Extrusion coating device for coating machine

Technical Field

The utility model relates to a film coating device field, concretely relates to extrude coating unit for coating machine.

Background

Coaters are used to apply glues or coatings with specific functions on paper or film rolls. As shown in fig. 1, the coating machine is provided with an unreeling device 1 for releasing a film 99 coil, a traction device 2 for clamping and driving the film 99 to travel, an oven 3 for drying the film 99, and a reeling device 4 for rewinding the film 99 into a coil, the conventional coating machine adopts an anilox roll coating method, and recently, an extrusion coating process, also called slit coating, has appeared, the core component of the extrusion coating is an extrusion die 51, as shown in fig. 10, the extrusion die 51 comprises an upper die 511 and a lower die 512, the lower die 512 is formed with a distribution chamber 5122 and a feed inlet 5121, the feed inlet 5121 is communicated with the distribution chamber 5122, a long and narrow extrusion slit 513 is formed between the upper die 511 and the lower die 512, the extrusion slit 513 is communicated with the distribution chamber 5122, the feed inlet 5121 is used for connecting a screw pump, a polymer in a fluid state is delivered to the feed inlet 5121 by the screw pump, and then the polymer enters the, the distribution chamber 5122 serves to temporarily store the polymer and stabilize the pressure of the polymer, the polymer in a fluid state is then extruded from the extrusion slit 513, as shown in fig. 1, the extrusion coating device 5 is disposed between the drawing device 2 and the oven 3 of the coating machine, as shown in fig. 2, the film 99 partially covers the coating back roller 59 of the extrusion coating device 5, which is driven by the motor to rotate clockwise, the extrusion slit 513 is abutted against the coating back roller 59, the film 99 passes between the coating back roller 59 and the extrusion slit 513, so that the polymer in a fluid state extruded from the extrusion slit 513 adheres to the surface of the film 99 and is carried away by the film 99, the surface of the film 99 is coated with a coating layer 991, and the film 99 enters the oven 3 to be dried. As shown in fig. 12, the width of the coating layer 991 needs to be smaller than the width of the film 99, otherwise the polymer in the fluid state extruded from the extrusion slit 513 is coated on the coating backing roller 59, and then the polymer is rubbed by the edge and the back of the film 99 on the coating backing roller 59, so that the polymer in the fluid state is scattered on the back of the film 99, and supports the film 99, which not only adheres the coated polymer to the back of the film 99, but also affects the flatness of the coating, and the product of the film 99 is discarded. After the film 99 web is released from the unwinding device 1, sometimes the film 99 is not aligned with the extrusion slit 513 due to the inaccurate front and back installation position of the film 99 web, so that the polymer coating in a fluid state often exceeds the edge of the film 99 to affect the coating quality, and therefore, the extrusion coating device in the prior art needs to be improved.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide an extrude coating unit for coating machine, it is favorable to improving coating quality.

The purpose of the utility model is realized by the following technical scheme.

The utility model discloses an extrude coating unit for coating machine, which comprises a frame, the frame rotates and is connected with the coating back roll, the coating back roll corresponds and is equipped with extrusion tooling, its characterized in that still includes the mould gallows, the mould gallows includes perpendicular jib, entablature and upper longitudinal beam, the lower extreme of perpendicular jib with extrusion tooling fixed connection, the upper end of perpendicular jib with entablature fixed connection, the quantity of upper longitudinal beam is established to two, two upper longitudinal beams are fixed connection respectively at the front and back both ends of entablature, the left and right both ends of upper longitudinal beam are rotated respectively and are connected with the wheel;

the frame is provided with an upper cross rod, the upper side surface of the upper cross rod is fixedly connected with a track which is arranged along the front-back direction, and the wheels are in adaptive rolling connection with the track;

the utility model discloses a mould gallows, including the mould gallows, the fixed block, the frame fixed connection, the one end of screw rod axle with the movable block spiro union, the other end that the screw rod axle is corresponding with worm gear reduction gear connection, the middle part of screw rod axle with the fixed block rotates to be connected, the screw rod axle is on a parallel with the track, worm gear reduction gear with frame fixed mounting, the motor of positioning passes through worm gear reduction gear drive is connected the screw rod axle.

Preferably, the frame is provided with a vertical leg rod, the upper end of the vertical leg rod is fixedly connected with the upper transverse rod, the lower end of the vertical leg rod is fixedly connected with a longitudinal bottom rod, the longitudinal bottom rod is connected with the rack in a sliding way through a linear guide rail pair, the linear guide rail pair is arranged along the left and right direction and comprises a frame positioning mechanism, the frame positioning mechanism comprises a positioning rod, a cylinder, a positioning plate and a positioning seat, the positioning plate is fixedly connected with the longitudinal bottom rod, the bottom surface of the positioning seat is fixedly connected with the frame, the middle part of the positioning rod is adapted to penetrate through the positioning plate, the lower part of the positioning rod is adapted to be inserted into the positioning seat, the piston rod of the air cylinder is fixedly connected with the upper end of the positioning rod, the air cylinder is fixedly installed on the rack through an air cylinder support, and the air cylinder can drive the positioning rod to upwards leave the positioning seat and the positioning plate.

Preferably, the lower end of the positioning rod is gradually reduced from top to bottom to form a circular truncated cone for guiding.

Preferably, the right end of the guide rail of the linear guide rail pair is correspondingly provided with a limiting plate, the limiting plate is fixedly connected with the rack, a limiting rubber cushion block is arranged between the limiting plate and the longitudinal bottom rod, the limiting rubber cushion block is fixedly installed on the limiting plate, and the limiting rubber cushion block is connected with the longitudinal bottom rod in a leaning and leaning manner.

Preferably, the middle part of the upper cross beam is fixedly connected with a lifting ring for lifting the extrusion die.

Compared with the prior art, the utility model, its beneficial effect is: through setting up mould gallows and extrusion tooling fixed connection, the mould gallows passes through wheel and frame adaptation roll connection, sets up the front and back shift mechanism that is used for extrusion tooling adjusting position, and then operating personnel can make polymer coating keep in the within range of film through adjusting the position on extrusion tooling's the fore-and-aft direction to be favorable to improving coating quality.

Drawings

Fig. 1 is a schematic view of a coating machine having the extrusion coating apparatus of the present invention.

Fig. 2 is a schematic front view of the extrusion coating apparatus of the present invention.

Fig. 3 is a left side view structure diagram of the extrusion coating apparatus of the present invention.

Fig. 4 is a left side view structural schematic diagram of the front and rear shifting mechanism of the present invention.

Fig. 5 is an enlarged view of fig. 3 at a.

Fig. 6 is a schematic drawing showing a pull-out state of the positioning rod according to fig. 3.

Fig. 7 is a schematic view of the mold hanger of the present invention.

Fig. 8 is a left side view structure diagram of the mold hanger of the present invention.

Fig. 9 is a left side view structural diagram of the frame of the present invention.

Fig. 10 is a schematic sectional structure view of the extrusion die of the present invention.

Fig. 11 is a schematic structural view of the screw shaft of the present invention.

Fig. 12 is a schematic view showing a state where an extrusion die is applied to the surface of a film.

Description of reference numerals: 100-a frame; 1-an unwinding device; 2-a traction device; 3-baking oven; 4-a winding device; 5-extrusion coating device; 51-an extrusion die; 511-upper mold; 512-lower mould; 5121-feeding port; 5122-a dispensing chamber; 513-extrusion slit; 52-a mold hanger; 521-a vertical boom; 522-upper beam; 523-upper longitudinal beam; 524-wheels; 53-a frame; 531-vertical leg bar; 532-upper cross bar; 533-track; 5331-a rail end stop; 534-longitudinal bottom bar; 54-a front-to-back displacement mechanism; 541-a movable block; 542-fixing block; 543-screw shaft; 5431-first threaded portion; 5432-baffle section; 5433-connecting journal part; 5434-second threaded portion; 5435-connecting ends; 544-worm gear reducer; 545-positioning motor; 55-a frame positioning mechanism; 551-positioning rod; 552-cylinder; 553-a positioning plate; 554-positioning seat; 555-cylinder support; 56-linear guide rail pair; 57-limiting plate; 571-limit rubber cushion blocks; 58-hoisting ring; 59-coating back roll; 99-a film; 991-coating.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model discloses an extrusion coating device, as shown in fig. 2 and 3, including frame 100, frame 100 rotates and is connected with coating backing roll 59, coating backing roll 59 is equipped with extrusion tooling 51 correspondingly, coating backing roll 59 is rotated by motor drive (it should be noted that, each figure does not show the drive structure of coating backing roll 59), as shown in fig. 10, extrusion tooling 51 includes last mould 511 and lower mould 512, lower mould 512 is formed with distribution chamber 5122 and pan feeding mouth 5121, pan feeding mouth 5121 communicates distribution chamber 5122, it extrudes seam 513 to form long and narrow between last mould 511 and the lower mould 512, it communicates distribution chamber 5122 to extrude seam 513, pan feeding mouth 5121 is used for connecting the screw pump, polymer to pan feeding mouth 5121 through the screw pump conveying fluid state, the polymer then gets into distribution chamber 5122, distribution chamber 5122 plays the effect of keeping in polymer and stabilizing polymer pressure, polymer extrudes from extruding seam 513 then in fluid state, as shown in fig. 2, the film 99 partially wraps the coating back roller 59, the extrusion slit 513 abuts against the coating back roller 59, and the film 99 passes between the coating back roller 59 and the extrusion slit 513, so that the polymer in a fluid state extruded from the extrusion slit 513 adheres to the surface of the film 99 and is carried away by the film 99, as shown in fig. 12, and the surface of the film 99 is coated with a coating 991. The above description is prior art.

As shown in fig. 2 and 3, the extrusion coating apparatus of the present invention includes a mold hanger 52, as shown in fig. 7 and 8, the mold hanger 52 includes a vertical suspension rod 521, an upper beam 522 and an upper longitudinal beam 523, as shown in fig. 2, the lower end of the vertical suspension rod 521 is fixedly connected to the extrusion mold 51 through screws, the vertical suspension rods 521 are two in total, as shown in fig. 7, the upper end of the vertical suspension rod 521 is fixedly connected to the upper beam 522, as shown in fig. 8, the number of the upper longitudinal beams 523 is two, the two upper longitudinal beams 523 are respectively fixedly connected to the front and rear ends of the upper beam 522, as shown in fig. 7, the left and right ends of the upper longitudinal beam 523 are respectively rotatably connected to wheels 524, a mandrel passes through the center of the wheels 524, and the mandrel is relatively. As shown in fig. 2 and 3, the frame 53 includes a frame 53, as shown in fig. 9, the frame 53 is provided with an upper cross bar 532, the upper side surface of the upper cross bar 532 is fixedly connected with a rail 533 arranged along the front-back direction, the wheel 524 is in fit rolling connection with the rail 533, specifically, the rail 533 can be a equilateral angle steel, the angular tip of the equilateral angle steel faces upwards, correspondingly, as shown in fig. 7, the wheel 524 is formed with a circumferential pit, and the shape of the pit is matched with the shape of the rail 533, that is, the wall surface of the pit forms an included angle of 90 °. In combination with the gravity of the die hanger 52 and the extrusion die 51, the wheels 524 can only linearly roll on the rails 533, as shown in fig. 9, rail end shields 5331 for preventing the wheels 524 from slipping out are welded to the front and rear ends of the rails 533, respectively, and as can be seen from fig. 7 and 8, the wheels 524 are four in number, and accordingly, the rails 533 are provided in two. As shown in fig. 2 and 4, the front-rear shifting mechanism 54 includes a movable block 541, a fixed block 542, a screw shaft 543, a worm gear reducer 544, and a positioning motor 545, wherein the movable block 541 is fixedly connected to the mold hanger 52 by screws, and the fixed block 542 is fixedly connected to the frame 53. Fig. 11 shows a specific structure of the screw shaft 543, as shown in fig. 4, one end of the screw shaft 543 is screwed with the movable block 541, and specifically, the first screw portion 5431 of the screw shaft 543 is screwed with the movable block 541; the other end corresponding to the screw shaft 543 is connected with the worm gear reducer 544, in particular, the connecting end 5435 of the screw shaft 543 is connected with the worm gear reducer 544 through a flat key; the middle part of the screw shaft 543 is rotatably connected with the fixed block 542, specifically, the connecting shaft neck portion 5433 of the screw shaft 543 is rotatably connected with the fixed block 542, a sliding bearing can be arranged between the connecting shaft neck portion 5433 and the fixed block 542, the baffle portion 5432 of the screw shaft 543 is attached to one side of the fixed block 542, two hexagon nuts are arranged on the other side of the fixed block 542 corresponding to each other, the two hexagon nuts are screwed with the second thread portion 5434 of the screw shaft 543, the two hexagon nuts are mutually pressed and fixed, and a gap is arranged between the fixed block 542 and the corresponding hexagon nut, so that the fixed block 542 can rotate relative to the hexagon nut. The screw shaft 543 is parallel to the rail 533. The worm gear reducer 544 is fixedly mounted on the frame 53, the positioning motor 545 is connected with the screw shaft 543 through the worm gear reducer 544, and specifically, the positioning motor 545 is directly mounted on the worm gear reducer 544.

The positioning motor 545 is connected to a forward and reverse rotation circuit and is correspondingly provided with forward and reverse inching switch buttons. Film 99 wears to adorn on the coating machine, the coating machine starts, film 99 walks along the dotted line arrow direction of fig. 2, operating personnel observes whether film 99 is adjusting extrusion tooling 51 well, then make extrusion tooling 51 begin to extrude the polymer of fluid state, operating personnel can further observe whether coating 991 that the polymer of fluid state formed has surpassed the edge of film 99 at this moment, if find that coating 991 has surpassed the edge of film 99, operating personnel can make positioning motor 545 drive extrusion tooling 51 and make corresponding position adjustment according to the concrete skew direction of coating 991, then be favorable to in time revising the position of coating 991, avoid extrusion tooling 51 to continue to coat the polymer of fluid state on coating backing roll 59, compared with the prior art, the utility model discloses an extrusion coating device has improved coating quality. Because the extrusion die 51 is driven by the positioning motor 545 through the worm gear reducer 544 to adjust the position, the operation of an operator is convenient, and the extrusion die 51 can stably keep the working position under the normal operation state of the coating machine by combining the self-locking characteristic of the worm gear reducer 544.

Further, as shown in fig. 9, the frame 53 is provided with four vertical leg rods 531, the upper ends of the vertical leg rods 531 are fixedly connected to the upper cross rod 532, the lower ends of the vertical leg rods 531 are fixedly connected to the longitudinal bottom rods 534, and specifically, the left and right ends of the longitudinal bottom rods 534 are respectively connected to the lower ends of the corresponding vertical leg rods 531. As shown in fig. 2, the vertical bottom bar 534 is slidably connected to the frame 100 via a linear guide pair 56, the linear guide pair 56 is a commercially available steel linear guide pair, and the linear guide pair 56 includes a guide rail and a slider, and the slider can only move linearly along the extending direction of the guide rail. As shown in fig. 2, the linear guide pair 56 is arranged in the left-right direction (i.e., the guide rails of the linear guide pair 56 are arranged extending in the left-right direction). As shown in fig. 2 and 3, the frame positioning mechanism 55 includes a positioning rod 551, an air cylinder 552, a positioning plate 553, and a positioning seat 554, as shown in fig. 5, the positioning plate 553 is fixedly connected to the longitudinal bottom rod 534, a bottom surface of the positioning seat 554 is fixedly connected to the frame 100, a middle portion of the positioning rod 551 is adapted to pass through the positioning plate 553, a lower portion of the positioning rod 551 is adapted to be inserted into the positioning seat 554, and specifically, the positioning rod 551 is in clearance fit with the positioning plate 553 and the positioning seat 554, respectively. The piston rod of the cylinder 552 is fixedly connected with the upper end of the positioning rod 551, the cylinder 552 and the rack 100 are fixedly installed through a cylinder support 555, and the piston rod of the cylinder 552 penetrates through the upper part of the cylinder support 555. The cylinder 552 can drive the positioning rod 551 to move upward away from the positioning seat 554 and the positioning plate 553. Through the arrangement, the frame 53 can be accurately positioned in the normal operation state of the coating machine, and in the shutdown state of the coating machine, when the extrusion die 51 needs to be cleaned, the positioning rod 551 can be pulled out through the air cylinder 552, as shown in fig. 6, the frame 53 and the machine frame 100 are unlocked, so that the frame 53 and the extrusion die 51 can be pulled away from the coating back roller 59 to the left by hands, the resistance is small because the frame 53 is in sliding connection with the machine frame 100 through the linear guide rail pair 56, and then an operator can stand between the coating back roller 59 and the extrusion die 51 to clean the extrusion die 51 or the coating back roller 59, so that the extrusion die 51 or the coating back roller 59 can be cleaned well, and the coating quality can be ensured. As shown in fig. 3, two sets of frame positioning mechanisms 55 may be provided, and the two sets of frame positioning mechanisms 55 respectively correspond to the two sets of linear guide rail pairs 56, which is beneficial to reliably fix the frame 53.

Further, as shown in fig. 6, the lower end portion of the positioning rod 551 is tapered from top to bottom to form a circular truncated cone for guiding (the "circular truncated cone" is defined herein as a portion remaining after the vertex of the cone is truncated by a plane parallel to the bottom surface of the cone). Then, in the process that the positioning rod 551 is inserted downwards into the through hole of the positioning rod 551 formed on the positioning plate 553 by the cylinder 552, the positioning rod 551 can force the positioning plate 553 to be coaxial with the positioning rod 551 by the thrust of the cylinder 552 due to the guiding action of the circular truncated cone, thereby correcting the error of manually operating the pushing frame 53. The positioning plate 553 and the positioning seat 554 are chamfered at the upper end of the through hole corresponding to the positioning rod 551, which is more beneficial to the smooth insertion of the positioning rod 551.

Further, as shown in fig. 2, a limiting plate 57 is correspondingly disposed at the right end of the guide rail of the linear guide rail pair 56, the limiting plate 57 is fixedly connected with the rack 100, a limiting rubber pad 571 is disposed between the limiting plate 57 and the longitudinal bottom bar 534, the limiting rubber pad 571 is fixedly mounted with the limiting plate 57, the limiting rubber pad 571 is connected with the longitudinal bottom bar 534 in a leaning manner, by such arrangement, after the cleaning operation is completed, an operator pushes the frame 53 to a position where the limiting rubber pad 571 touches right, the limiting rubber pad 571 plays a role in buffering and positioning, and then operates the air cylinder 552 to insert the positioning bar 551 into the positioning plate 553 and the positioning seat 554 downward. The elastic rubber cushion block 571 can avoid the positioning interference with the positioning rod 551.

Further, as shown in fig. 2 and 3, the middle portion of the upper beam 522 is fixedly connected with a lifting ring 58 for lifting the extrusion die 51, so that when the extrusion die 51 needs to be maintained, the screw connecting the movable block 541 and the die hanger 52 can be firstly detached, and then the die hanger 52 and the extrusion die 51 are lifted by a crane in a factory to leave the frame 53, so that the extrusion die 51 is conveniently maintained, and the labor intensity is reduced.

Claims

1. An extrusion coating device for a coating machine comprises a machine frame (100), wherein a coating back roller (59) is rotatably connected to the machine frame (100), the coating back roller (59) is correspondingly provided with an extrusion die (51), and the extrusion coating device is characterized in that: the die lifting frame (52) comprises a vertical lifting rod (521), an upper cross beam (522) and an upper longitudinal beam (523), the lower end of the vertical lifting rod (521) is fixedly connected with the extrusion die (51), the upper end of the vertical lifting rod (521) is fixedly connected with the upper cross beam (522), the number of the upper longitudinal beams (523) is two, the two upper longitudinal beams (523) are respectively and fixedly connected to the front end and the rear end of the upper cross beam (522), and the left end and the right end of the upper longitudinal beam (523) are respectively and rotatably connected with wheels (524);

the trolley is characterized by further comprising a frame (53), wherein the frame (53) is provided with an upper cross bar (532), the upper side surface of the upper cross bar (532) is fixedly connected with a rail (533) which is arranged along the front-back direction, and the wheels (524) are in rolling connection with the rail (533) in a matching mode;

the device also comprises a front-back displacement mechanism (54), wherein the front-back displacement mechanism (54) comprises a movable block (541), a fixed block (542), a screw shaft (543), a worm gear reducer (544) and a positioning motor (545), the movable block (541) is fixedly connected with the mould hanger (52) through screws, the fixed block (542) is fixedly connected with the frame (53), one end of the screw shaft (543) is in threaded connection with the movable block (541), the other end corresponding to the screw shaft (543) is connected with the worm gear reducer (544), the middle part of the screw shaft (543) is rotationally connected with the fixed block (542), the screw shaft (543) is parallel to the rail (533), the worm gear reducer (544) is fixedly mounted with the frame (53), the positioning motor (545) is connected with the screw shaft (543) in a driving mode through the worm gear reducer (544).

2. The extrusion coating apparatus for a coater according to claim 1, wherein: the frame (53) is provided with a vertical rod (531), the upper end of the vertical rod (531) is fixedly connected with the upper cross rod (532), the lower end of the vertical rod (531) is fixedly connected with a longitudinal bottom rod (534), the longitudinal bottom rod (534) is slidably connected with the frame (100) through a linear guide rail pair (56), the linear guide rail pair (56) is arranged along the left and right direction and comprises a frame positioning mechanism (55), the frame positioning mechanism (55) comprises a positioning rod (551), an air cylinder (552), a positioning plate (553) and a positioning seat (554), the positioning plate (553) is fixedly connected with the longitudinal bottom rod (534), the bottom surface of the positioning seat (554) is fixedly connected with the frame (100), the middle part of the positioning rod (551) is matched and penetrates through the positioning plate (553), and the lower part of the positioning rod (551) is matched and inserted into the positioning seat (554), the piston rod of the air cylinder (552) is fixedly connected with the upper end of the positioning rod (551), the air cylinder (552) and the rack (100) are fixedly installed through an air cylinder support (555), and the air cylinder (552) can drive the positioning rod (551) to upwards leave the positioning seat (554) and the positioning plate (553).

3. The extrusion coating apparatus for a coater according to claim 2, wherein: the lower end part of the positioning rod (551) is gradually reduced from top to bottom to form a circular table for guiding.

4. The extrusion coating apparatus for a coater according to claim 3, wherein: the right end of the guide rail of the linear guide rail pair (56) is correspondingly provided with a limiting plate (57), the limiting plate (57) is fixedly connected with the rack (100), a limiting rubber cushion block (571) is arranged between the limiting plate (57) and the longitudinal bottom rod (534), the limiting rubber cushion block (571) is fixedly installed with the limiting plate (57), and the limiting rubber cushion block (571) is connected with the longitudinal bottom rod (534) in an attached mode.

5. The extrusion coating apparatus for a coater according to claim 1, wherein: the middle part of the upper cross beam (522) is fixedly connected with a lifting ring (58) used for lifting the extrusion die (51).