A pad printing type coating device for metal packaging container manufacturing process

Abstract

A pad printing type re-coating device for the manufacturing process of metal packaging containers. The present invention is to solve the problems that the existing spraying technology will cause air pollution and affect the health of workers, and the brushing will cause uneven re-coating and missing re-coating points. Technical points: The features include a frame, a rotating shaft, a swing arm, a driving arm, a driver, a pad printing cylinder, a pad printing head, a coating tank, a dip plate, a dip plate cylinder and a liquid replenishing tank. The rotating shaft is rotatably matched on the frame, the swing arm is fixed on the rotating shaft, one end of the driving arm is fixed on the rotating shaft, the driver is installed on the frame, and the driver is connected to the other end of the driving arm. A horizontal pad printing cylinder is installed on the inner side of the swing arm, and the pad printing head is installed on the pad printing cylinder and is on the outer side of the swing arm. The coating tank is fixed on the frame, and there is a dip plate that moves up and down at the top of the coating tank. A dip plate cylinder is installed on the frame, and the dip plate cylinder is connected to the top of the dip plate. The dip plate cooperates with the pad printing head. The liquid replenishing tank is installed on the frame and has a coating delivery pipe with the coating tank.

Description

Technical Field

[0001] The invention relates to a manufacturing device for a metal packaging container, in particular to a pad printing type coating device used in the manufacturing process of the metal packaging container. Background Art

[0002] Commonly used larger metal packaging containers, such as packaging barrels and packaging cans, are generally made of metal plates with an anti-corrosion coating to make the container body, and then handles are set on the upper part for easy carrying. To set the handles, it is first necessary to use the spot welding process to weld two handle ears on the outer side of the upper part of the container body, and then install a metal or non-metallic handle on the two handle ears. After the handles are made, the anti-corrosion coating will be damaged on the inner side of the upper part of the container body corresponding to the handle ears, which will reduce the anti-corrosion performance of the metal packaging container's storage cavity and affect the quality of the items contained. Therefore, the metal packaging container manufacturing process requires the damaged parts of the anti-corrosion coating of the storage cavity to be re-coated with an anti-corrosion coating.

[0003] The applicant has previously applied for Chinese Patent No. 201921359871.7 for a fully automatic multi-station continuous production machine for metal handles of metal packaging barrels, the structure of which includes a frame and an automatic barrel body conveying line device, a barrel body positioning device, an automatic spot welding device for lifting ears, a lifting ear feeding device, a handle forming and installation device, a handle metal wire feeding device, a handle handle tube section feeding device and a barrel welding spot re-coating device, wherein the automatic barrel body conveying line device is arranged on the frame table and its conveying direction is arranged in the same direction as the front and rear directions of the frame table, the barrel body positioning device is arranged behind the barrel body input port on the automatic barrel body conveying line device, and the automatic spot welding device for lifting ears is arranged on the automatic barrel body conveying line device The barrel body positioning device is located behind the barrel body positioning device, the ear feeding device is located above the ear automatic spot welding device and is connected to the ear automatic spot welding device through the ear conveying channel, the handle forming installation device is located behind the ear automatic spot welding device on the barrel body automatic conveying line device, the handle grip tube section feeding device is located on one side above the handle forming installation device and is connected to the handle forming installation device through the tube section conveying channel, the handle metal wire feeding device is located on one side of the handle forming installation device and is connected to the wire input port of the handle forming installation device through the wire conveying channel, and the barrel internal welding spot re-coating device is located behind the handle forming installation device on the barrel body automatic conveying line device. The barrel internal welding spot re-coating device of this technical solution adopts spraying to apply the anti-corrosion coating, but spraying will emit paint particles into the surrounding air, causing air pollution and affecting the health of workers.

[0004] Chinese Patent Application No. 200910146709.1 discloses a tank body recoating machine, which is used for recoating the lugs and welds of the tank body, and has a frame, on which a tank holding unit, a point finding unit, a lug recoating unit and a weld recoating unit are arranged, the weld recoating unit includes a first weld recoating unit and a second weld recoating unit, the lug recoating unit has an inverted "T"-shaped fixed frame plate, a servo motor and a rack penetrating the fixed frame plate are installed on the fixed frame plate, and the servo motor drives the rack; the lower part of the rack is connected to A re-coating arm is connected, a disc is arranged above the re-coating arm, four slide rails are arranged inside the disc, and the disc is connected to the rack bottom plate through bolts passing through the slide rails; two re-coating brushes are arranged at the bottom end of the re-coating arm, and the re-coating brushes are arranged back to back, and the weld re-coating unit has an inverted "T"-shaped fixed frame plate, a servo motor and a rack penetrating the fixed frame plate are installed on the fixed frame plate, and the servo motor drives the rack; a re-coating arm is connected and fixed to the lower part of the rack, and two re-coating brushes are arranged at the bottom end of the re-coating arm, and the re-coating brushes are arranged face to face. The ear re-coating unit and the weld re-coating unit of this technical solution both adopt a brushing method to apply the anti-corrosion coating, but brushing is prone to uneven re-coating of the anti-corrosion coating and missing points, and the re-coating quality is poor; in addition, this technical solution does not disclose the coating supply mechanism and the coordination relationship with the re-coating brush, which makes it difficult to implement the technical solution, and is an incomplete technical solution. Summary of the invention

[0005] In order to overcome the problems of the prior art re-coating, that is, the use of spraying will release paint particles into the surrounding air, causing air pollution and affecting the health of workers, and the use of brushing will easily result in uneven anti-corrosion coating and missing spots, and poor re-coating quality, etc., the purpose of the present invention is to provide an improved pad printing re-coating device for the metal packaging container manufacturing process, which can overcome the defects of the prior art.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a pad printing type re-coating device for a metal packaging container manufacturing process, characterized in that it includes a frame, a rotating shaft, a swing arm, a driving arm, a driver, a pad printing cylinder, a pad printing head, a coating tank, a dipping plate, a dipping plate cylinder and a liquid replenishing tank, wherein the frame is installed on the metal packaging container manufacturing equipment, the rotating shaft is rotatably fitted on the frame, the swing arms are two, respectively fixedly installed on the rotating shaft, one end of the driving arm is fixedly installed on the rotating shaft, the driver is installed on the frame, the driving end of the driver is connected to the other end of the driving arm, and the inner sides of the two swing arms are respectively fixed A horizontally arranged pad printing cylinder is fixedly installed, and the outer end of the piston rod of the pad printing cylinder can pass through the holes on the swing arm respectively. The pad printing heads are respectively installed on the outer ends of the piston rods of the pad printing cylinders and are respectively located on the outsides of the swing arms. The coating tank is fixedly installed on the frame, and a dipping plate that can move up and down is matched on the top of the coating tank. A vertically arranged dipping plate cylinder is fixedly installed on the frame above the coating tank, and the outer end of the piston rod of the dipping plate cylinder is connected to the top of the dipping plate, and the dipping plate corresponds to the pad printing head. The liquid replenishing tank is fixedly installed on the frame, and a coating liquid delivery pipe is connected between the liquid replenishing tank and the coating tank.

[0007] The swing arm described in the above technical solution can be a "∟"-shaped plate body, the corner portion of the swing arm is fixedly mounted on the rotating shaft, and horizontally arranged pad printing cylinders are respectively mounted at the two end portions of the swing arm, and the outer ends of the piston rods of the pad printing cylinders can respectively pass through the openings on the swing arm, and the pad printing heads are respectively mounted on the outer ends of the piston rods of the pad printing cylinders and are respectively located on the outer sides of the ends of the swing arm.

[0008] In the above technical solution, the outer ends of the piston rods of the pad printing cylinders can respectively pass through the holes on the swing arms and be located on the outside of the swing arms, and the pad printing heads can be respectively installed on the outer ends of the piston rods of the pad printing cylinders, or the outer ends of the piston rods of the pad printing cylinders can respectively pass through the holes on the swing arms and be located on the inside of the swing arms, and the pad printing heads located on the outside of the swing arms can be installed on the outer ends of the piston rods of the pad printing cylinders through the holes on the swing arms.

[0009] The frame of the above technical solution may be fixedly mounted with a pad printing head drip receiving groove, and the drip receiving groove is located below the lowest swing point of the pad printing head.

[0010] The pad printing head drip receiving groove described in the above technical solution can be one groove cavity or two groove cavities. The length of the pad printing head drip receiving groove can be greater than the length between the front ends of the two corresponding pad printing heads on the two swing arms, and smaller than the inner cavity size of the metal packaging container to be re-coated.

[0011] The pad printing head of the above technical solution may be composed of a main body portion that can be connected to the piston rod of the pad printing cylinder and a soft pad printing material layer covering the outside of the main body portion.

[0012] The dipping plate described in the above technical solution can be a front side for contacting and cooperating with the pad printing head to transfer the coating layer, and a back side for sliding cooperation with a pulley installed on the top of the coating tank.

[0013] The coating tank, the dipping plate and the dipping plate cylinder described in the above technical solution can be provided with four groups, which respectively correspond to the four pad printing heads on the swing arms of the two “∟”-shaped plate bodies.

[0014] The driver described in the above technical solution can adopt a driving arm cylinder or a driving arm motor, etc. The driver adopts a driving arm cylinder, and the driving arm cylinder can be hinged on the frame and arranged vertically above the driving arm, and the outer end of the piston rod of the driving arm cylinder is hinged to the other end of the driving arm.

[0015] The frame of the above technical solution can be equipped with a plurality of air valves for controlling the actions of the drive arm cylinder, the pad printing cylinder and the dipping plate cylinder.

[0016] The beneficial effects of the present invention are as follows: first, a pad printing re-coating device is arranged on a metal packaging container manufacturing device, and a pad printing re-coating method is used to locally re-coat the damaged part of the anti-corrosion coating on the inner wall of the metal packaging container, that is, the re-coated coating layer is printed on the damaged part of the anti-corrosion coating, which effectively solves the problem that the existing technology uses spraying to emit coating particles into the surrounding air, causing air pollution and affecting the health of workers, or uses brushing to easily cause uneven re-coating of the anti-corrosion coating, missing re-coating points, and poor re-coating quality; second, the coating is used The cooperation of the liquid tank, the dip plate and the dip plate cylinder cleverly utilizes the up and down movement of the dip plate to dip a uniform layer of paint on the dip plate each time, so that after the pad printing head is pressed on the dip plate, it can quickly pick up a layer of paint, and then when the pad printing head is pressed on the damaged part of the anti-corrosion coating on the inner wall of the metal packaging container, the picked-up paint layer is quickly transferred to the damaged part of the anti-corrosion coating, which can effectively achieve uniform coating without missing any spots, and the quality of the coating is good; the third is to use the driver to control the drive arm, and then drive the swing arm to swing, so that the pad printing head can The invention can repeatedly switch between the two positions of picking up the coating layer and transferring the coating layer, and then use the horizontally arranged pad printing cylinder to drive the pad printing head to pick up the coating layer and transfer the coating layer. This is a simple and ingenious structure; fourthly, through the coordination between the coating tank, the dip plate, the dip plate cylinder and the replenishing tank, the replenishing coating liquid supply system is perfect, so that the feasibility of the invention is higher; fifthly, when the swing arm adopts a "∟"-shaped plate body, the corner part of the swing arm is fixedly installed on the rotating shaft, and the two ends of the two swing arms are respectively equipped with horizontally arranged pad printing cylinders. , when pad printing heads are respectively installed on the outer ends of the piston rods of the pad printing cylinders, two pairs of pad printing heads can work in turn, which can greatly improve the re-coating efficiency and enable the pad printing re-coating device to adapt to the high-speed requirements of the metal packaging container manufacturing assembly line; sixth, when a pad printing head drip groove is provided below the lowest swing point of the pad printing head, the pad printing head together with the pad printing head drip groove enters the inner cavity of the metal packaging container for the re-coating operation process, and no paint droplets on the pad printing head will appear on the inner bottom surface of the metal packaging container, thereby avoiding dirtying the inner cavity of the metal packaging container.

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A three-dimensional schematic diagram of the separated rotating shaft, swing arm, drive arm, pad printing cylinder, pad printing head and pad printing head drip groove.

[0020] In the figure: 1, frame; 2, rotating shaft; 3, swing arm; 4, driving arm; 5, driving arm cylinder; 6, pad printing cylinder; 7, pad printing head; 8, coating tank; 9, dipping plate; 10, dipping plate cylinder; 11, replenishing tank; 12, swing arm; 13, outer end of piston rod of driving arm cylinder; 14, angle part of swing arm; 15 and 16, two ends of swing arm; 17, pad printing cylinder; 18, pad printing head; 19, pad printing head drip groove; 20 and 21, groove cavity; 22, pad printing head; 23, pulley; 24, pad printing head; 25, air valve. DETAILED DESCRIPTION

[0021] Reference Figure 1-2 The pad printing type coating device for the metal packaging container manufacturing process is characterized in that it includes a frame 1, a rotating shaft 2, a swing arm 3, a driving arm 4, a driving arm cylinder 5, a pad printing cylinder 6, a pad printing head 7, a coating tank 8, a dipping plate 9, a dipping plate cylinder 10 and a liquid replenishing tank 11, wherein the frame 1 is installed on the metal packaging container manufacturing equipment, the rotating shaft 2 is rotatably matched on the frame 1, the swing arm 3 is two 3 and 12, which are respectively fixedly installed on the rotating shaft 2, one end of the driving arm 4 is fixedly installed on the rotating shaft 2, the driving arm cylinder 5 is hinged on the frame 1 and is vertically arranged above the driving arm 4, the outer end 13 of the piston rod of the driving arm cylinder 5 is hinged to the other end of the driving arm 4, and the inner sides of the two swing arms 3 are respectively fixedly installed There are the pad printing cylinders 6 etc. arranged horizontally, the outer ends of the piston rods of the pad printing cylinders 6 etc. respectively pass through the holes on the swing arms 3 etc. and are respectively located on the outsides of the swing arms 3, the pad printing heads 7 etc. are respectively mounted on the outer ends of the piston rods of the pad printing cylinders 6, the coating tank 8 is fixedly mounted on the frame 1, the top of the coating tank 8 is equipped with a dipping plate 9 which can move up and down, the frame 1 is fixedly equipped with the dipping plate cylinder 10 arranged vertically above the coating tank 8, the outer end of the piston rod of the dipping plate cylinder 10 is connected to the top of the dipping plate 10, the dipping plate 9 is matched with the pad printing head 7, the replenishing tank 11 is fixedly mounted on the frame 1, and a coating delivery pipe (not shown) is connected between the replenishing tank 11 and the coating tank 8.

[0022] The swing arm 3 and the like are all "∟"-shaped plate bodies, the corner portion 14 of the swing arm 3 is fixedly mounted on the rotating shaft 2, and horizontally arranged pad printing cylinders 6 and 17 are respectively mounted on the inner sides of the two foot ends 15 and 16 of the swing arm 3, the outer ends of the piston rods of the pad printing cylinders 6 and 17 respectively pass through the holes on the swing arm 3 and are respectively located on the outer sides of the two foot ends 15 and 16 of the swing arm 3, and the pad printing heads 7 and 18 are respectively mounted on the outer ends of the piston rods of the pad printing cylinders 6 and 17.

[0023] A pad printing head drip receiving groove 19 is fixedly mounted on the frame 1 , and the pad printing head drip receiving groove 19 is located below the lowest swing point of the pad printing head 7 or 18 .

[0024] The pad printing head drip receiving groove 19 is composed of two groove cavities 20 and 21, and the length of the pad printing head drip receiving groove 19 is greater than the length between the front ends of the two corresponding pad printing heads 18 and 22 on the two swing arms 3 and 12, and is smaller than the inner cavity size of the metal packaging container to be re-coated.

[0025] The pad printing head 7 and the like are composed of a main body portion that can be connected to a piston rod of the pad printing cylinder 6 and the like and a soft pad printing material layer covering the outside of the main body portion.

[0026] The front side of the dip plate 9 is used for contacting and cooperating with the pad printing head 7 to transfer the coating layer, and the back side thereof is used for sliding cooperation with the pulley 23 installed on the top of the coating tank 8.

[0027] The coating tank 8, the dipping plate 9 and the dipping plate cylinder 10 are provided in four groups, which respectively correspond to the four pad printing heads 7, 18, 22, 24 on the swing arms 3 and 12 of the two "∟"-shaped plate bodies.

[0028] The frame 1 is provided with a plurality of air valves 25 and the like for controlling the actions of the drive arm cylinder 5 , the pad printing cylinder 6 and the dip plate cylinder 10 and the like.

[0029] During operation, the four coating liquid tanks 8 are filled with coating liquid for re-coating; the driving arm cylinder 5 drives the two swing arms 3 and 12 to swing back and forth synchronously, so that the four pad printing heads 7, 18, 22, 24 can switch back and forth between the two positions of picking up the coating layer and transferring the coating layer; at the same time, the four dip plate cylinders 10 respectively drive the four dip plates 9 to move up and down, and respectively pick up a layer of coating from the four dip plate cylinders 10 and apply it to the front of the four dip plates 9; when the front side of the pad printing heads 7, 24 or 18, 22 faces the front of the dip plates 9, the pad printing cylinders 6 and 17 drive the pad printing heads 7, 24 or 18, 22 to move to the front of the dip plates 9, etc. The pad printing head 7, 24 or 18, 22 is pressed on the front side of the dip plate 9, etc., and a layer of coating is adhered to the dip plate 9, etc.; after the pad printing cylinder 6, etc. and 17, etc. control the pad printing head 7, 24 or 18, 22 to retreat, the two swing arms 3 and 12 control the pad printing head 7, 24 or 18, 22 to reach the lowest point of the swing and be above the pad printing head drip receiving groove 19; at this time, the metal packaging container manufacturing equipment raises a metal packaging container with an open top to be re-coated from the bottom of the pad printing head drip receiving groove 19, and raises the pad printing head 7, 24 or 18, 22 at the lowest point of the swing. 22 together with the pad printing head drip receiving groove 19 are inserted into the inner cavity of the metal packaging container; when the set re-coating position in the metal packaging container is aligned with the pad printing head 7, 24 or 18, 22 respectively, the metal packaging container stops rising, and the pad printing cylinders 6 and 17 drive the pad printing heads 7, 24 or 18, 22 to press on the set re-coating position in the metal packaging container, and transfer the coating layer on the pad printing heads 7, 24 or 18, 22 to the set re-coating position in the metal packaging container; then the pad printing cylinders 6 and 17 control the pad printing heads 7, 24 or 18, 22 The metal packaging container moves back and forth, and the re-coating of one metal packaging container is completed; then the metal packaging container manufacturing equipment controls the metal packaging container that has completed the re-coating to descend, withdraws the pad printing head 7, 24 or 18, 22 and the pad printing head drip groove 19, and when the metal packaging container that has completed the re-coating is removed, another metal packaging container to be re-coated can rise, and the cycle is repeated; the swing arm using two "∟"-shaped plate bodies, and the two pairs of pad printing heads 7, 24 or 18, 22 arranged thereon work in turn, which greatly improves the re-coating efficiency, so that the pad printing re-coating device can adapt to the high speed requirements of the metal packaging container manufacturing line.

Claims

1. A pad printing type coating device for a metal packaging container manufacturing process, characterized in that: The invention comprises a frame, a rotating shaft, a swing arm, a driving arm, a driver, a pad printing cylinder, a pad printing head, a coating tank, a dipping plate, a dipping plate cylinder and a liquid replenishing tank, wherein the frame is installed on the metal packaging container manufacturing equipment, the rotating shaft is rotatably matched on the frame, the swing arms are two, which are respectively fixedly installed on the rotating shaft, one end of the driving arm is fixedly installed on the rotating shaft, the driver is installed on the frame, the driving end of the driver is connected to the other end of the driving arm, the inner sides of the two swing arms are respectively fixedly installed with horizontally arranged pad printing cylinders, the pistons of the pad printing cylinders The outer ends of the rods can respectively pass through the holes on the swing arms, the pad printing heads are respectively mounted on the outer ends of the piston rods of the pad printing cylinders and are respectively located on the outsides of the swing arms, the coating tank is fixedly mounted on the frame, the top of the coating tank is matched with a dipping plate that can move up and down, a dipping plate cylinder arranged vertically is fixedly mounted on the frame above the coating tank, the outer end of the piston rod of the dipping plate cylinder is connected to the top of the dipping plate, the dipping plate corresponds to the pad printing head, the replenishing tank is fixedly mounted on the frame, and a coating delivery pipe is connected between the replenishing tank and the coating tank.

2. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 is characterized in that The swing arm is a "∟"-shaped plate body, the corner portion of the swing arm is fixedly mounted on the rotating shaft, and horizontally arranged pad printing cylinders are respectively mounted at the two end portions of the swing arm, the outer ends of the piston rods of the pad printing cylinders can respectively pass through the openings on the swing arm, and the pad printing heads are respectively mounted on the outer ends of the piston rods of the pad printing cylinders and are respectively located on the outer sides of the ends of the swing arm.

3. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 or 2, characterized in that The outer ends of the piston rods of the pad printing cylinders respectively pass through the holes on the swing arms and are located on the outside of the swing arms, and the pad printing heads are respectively mounted on the outer ends of the piston rods of the pad printing cylinders, or the outer ends of the piston rods of the pad printing cylinders can respectively pass through the holes on the swing arms and are located on the inside of the swing arms, and the pad printing heads located on the outside of the swing arms are mounted on the outer ends of the piston rods of the pad printing cylinders through the holes on the swing arms.

4. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 or 2, characterized in that A pad printing head drip receiving groove is fixedly mounted on the frame, and the drip receiving groove is located below the lowest swing point of the pad printing head.

5. The pad printing type coating device for the metal packaging container manufacturing process according to claim 4 is characterized in that The pad printing head drip receiving groove is one groove cavity or two groove cavities. The length of the pad printing head drip receiving groove is greater than the length between the front ends of the two corresponding pad printing heads on the two swing arms, and is smaller than the inner cavity size of the metal packaging container to be re-coated.

6. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 or 2, characterized in that The pad printing head is composed of a main body part which can be connected to the piston rod of the pad printing cylinder and a soft pad printing material layer covering the outside of the main body part.

7. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 or 2, characterized in that The front side of the dip plate is used for contacting and cooperating with the pad printing head to transfer the coating layer, and the back side thereof is used for sliding cooperation with the pulley installed on the top of the coating tank.

8. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 or 2, characterized in that The coating tank, the dipping plate and the dipping plate cylinder are provided with four groups, which respectively correspond to the four pad printing heads on the swing arms of the two "∟"-shaped plate bodies.

9. The pad printing type coating device for the metal packaging container manufacturing process according to claim 1 or 2, characterized in that The driver adopts a driving arm cylinder or a driving arm motor, wherein the driver adopts a driving arm cylinder, the driving arm cylinder is hinged on the frame and arranged vertically above the driving arm, and the outer end of the piston rod of the driving arm cylinder is hinged to the other end of the driving arm.

10. The pad printing type coating device for the metal packaging container manufacturing process according to claim 9, characterized in that A plurality of air valves are installed on the frame to control the actions of the drive arm cylinder, the pad printing cylinder and the dip plate cylinder.

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