Flexible full-automatic steel drum screen printing production line

Abstract

The invention relates to the technical field of silk-screen printing, and discloses a flexible full-automatic steel drum silk-screen printing production line which comprises a feeding device, a printing device and a discharging device, and the printing device comprises a printing rack, a steel drum carrying frame, a steel drum lifting frame and a steel drum printing mechanism; wherein at least two pairs of spacing-adjustable supporting assemblies are arranged on the printing rack in the conveying direction of the steel drums, and a plurality of groups of supporting and positioning units are arranged on the supporting assemblies in the conveying direction of the steel drums; the steel drum carrying frame is arranged on the matched supporting assembly, and a plurality of carrying positioning units are arranged on the steel drum carrying frame in the steel drum conveying direction. The steel drum lifting frame is located between the two pairs of supporting assemblies, a pair of lifting assemblies are arranged on the steel drum lifting frame, the distance between the lifting assemblies and each pair of supporting assemblies is synchronously adjusted, and lifting positioning units are arranged on the lifting assemblies. The device has the effects of adapting to steel drums of different sizes and reducing the occupied working space.

Description

Technical Field

[0001] The present application relates to the technical field of screen printing, and in particular to a flexible fully automatic steel drum screen printing production line. Background Art

[0002] Flexible steel drum is a metal packaging container, which is usually made of thin steel plate or other metal materials. At present, when printing the outer wall of the flexible steel drum, screen printing is generally adopted.

[0003] The existing steel drum screen printing production line mainly includes a feeding device, a printing device and a discharging device. When printing on a steel drum, the steel drum is placed on the feeding device, and the steel drum is transported to the printing device through the feeding device for printing, and then the steel drum is transported to the unloading area after the outer wall of the drum is printed through the discharging device.

[0004] However, at present, the steel drum screen printing production line can only print on steel drums of specific specifications. When screen printing is required on steel drums of different sizes, multiple printing devices of different sizes are generally configured to adapt to steel drums of different sizes. This is not only costly, but also occupies a large working space. Summary of the invention

[0005] In order to adapt to steel drums of different sizes and reduce the occupied working space, the present application provides a flexible fully automatic steel drum screen printing production line.

[0006] The flexible fully automatic steel drum screen printing production line provided in this application adopts the following technical solution:

[0007] A flexible fully automatic steel drum screen printing production line, comprising a feeding device, a printing device and a discharging device, wherein the printing device comprises a printing frame, a steel drum transport frame, a steel drum lifting frame and a steel drum printing mechanism, wherein:

[0008] At least two pairs of support components with adjustable spacing are provided on the printing machine frame along the conveying direction of the steel drum, and a plurality of groups of support positioning units are provided on the support components along the conveying direction of the steel drum;

[0009] The steel barrel transport frame is adapted to the support assembly, the steel barrel transport frame is installed on the adapted support assembly, a plurality of transport positioning units are provided on the steel barrel transport frame along the conveying direction of the steel barrel, and the steel barrel transport frame moves relative to the support assembly in the vertical direction through the vertical transport driving unit, and the steel barrel transport frame moves relative to the support assembly in the horizontal direction through the horizontal transport driving unit;

[0010] The steel barrel lifting frame is located between two pairs of the supporting assemblies. The steel barrel lifting frame is provided with a pair of lifting assemblies that adjust the spacing synchronously with each pair of the supporting assemblies. The lifting assembly is provided with a lifting positioning unit. The steel barrel lifting frame moves relative to the supporting assemblies in the vertical direction through the vertical lifting unit.

[0011] Optionally, each pair of the supporting and positioning units comprises a first supporting member and a second supporting member, wherein:

[0012] The first support member and the second support member are both slidably matched with the support assembly along the conveying direction of the steel barrel, and the first support member and the second support member are adjusted in the conveying direction of the steel barrel by a support distance adjustment assembly.

[0013] Optionally, the support distance adjustment assembly includes a first support distance adjustment rod and a second support distance adjustment rod, wherein:

[0014] The first support distance adjustment rod and the second support distance adjustment rod are movably connected to the support assembly, and the length direction of the first support distance adjustment rod and the second support distance adjustment rod is consistent with the conveying direction of the steel drum, the first support members are all installed on the first support distance adjustment rod, and the second support members are all installed on the second support distance adjustment rod.

[0015] Optionally, the steel barrel transport racks are provided with two groups, the steel barrel lifting rack is located between the two groups of the steel barrel transport racks, and each group of the steel barrel transport racks is mounted on a corresponding supporting assembly.

[0016] Optionally, the lifting and positioning unit includes a first lifting support member and a second lifting support member, and the first lifting support member and the second lifting support member adjust the spacing in the conveying direction of the steel barrel through a lifting spacing adjustment component, and the lifting spacing adjustment component includes a first lifting distance adjustment rod and a second lifting distance adjustment rod, the first lifting distance adjustment rod is detachably connected to the first support distance adjustment rod through a first connecting member, and the second lifting distance adjustment rod is detachably connected to the second support distance adjustment rod through a second connecting member.

[0017] Optionally, the steel drum printing mechanism includes a printing support frame, a screen printing template and an ink scraping assembly, wherein:

[0018] The printing support frame is installed on the top of the printing frame, and the printing support frame moves relative to the printing frame along the conveying direction of the steel drum through the printing drive unit;

[0019] The screen printing template is installed on the printing support frame through a template installation component, and the length direction of the screen printing template is consistent with the conveying direction of the steel drum;

[0020] The ink scraping assembly is mounted on the printing machine frame and contacts the top of the screen printing template.

[0021] Optionally, the template installation assembly includes a template installation frame and a template locking assembly, wherein:

[0022] The template mounting frame is mounted on the printing support frame and is slidably matched with the printing support frame along the conveying direction of the steel drum through the mounting driving unit;

[0023] The template locking components are provided in multiple groups, each group of the template locking components is adapted to the screen printing template, and each group of the template locking components is provided with two, the two template locking components are respectively mounted on the printing support frame and the template mounting frame, and the screen printing template is mounted on the printing support frame and the template mounting frame through the template locking components.

[0024] Optionally, the ink scraping assembly includes an ink scraping frame, an ink scraping adjustment block, an ink applying scraper and an ink returning scraper, wherein:

[0025] The ink scraper frame is installed on the printing machine frame;

[0026] The ink scraping adjustment block is slidably mounted on the ink scraping frame, and is moved in a direction perpendicular to the conveying direction of the steel drum through an ink scraping sliding driving unit. There are multiple ink scraping adjustment blocks, and multiple screen printing templates correspond to the ink scraping adjustment blocks one by one. The inking scraper is mounted on the ink scraping adjustment block, and the inking scraper moves relative to the ink scraping frame in the vertical direction through the inking driving unit; the ink return scraper is mounted on the ink scraping adjustment block, and the ink return scraper moves relative to the ink scraping frame in the vertical direction through the ink return driving unit.

[0027] Optionally, the feeding device includes a vertical barrel conveying mechanism and a flipping mechanism, the flipping mechanism is located near the printing device, and the conveying mechanism includes a conveying frame, a conveying roller group, a centering component and a conveying rhythm control component, wherein:

[0028] The conveying roller is assembled on the conveying frame;

[0029] The centering assembly includes a centering guide frame and a centering guide wheel;

[0030] The delivery rhythm control assembly includes a first blocking portion and a second blocking portion.

[0031] Optionally, the flip mechanism includes a fixed frame, a transfer platform, a flip bracket, and a flip blocking frame, wherein:

[0032] The fixed frame is located between the conveying frame and the printing device, and the fixed frame is fixed on the ground;

[0033] The transfer platform is installed on the top of the fixed frame, and the transfer platform and the fixed frame are slidably matched. The transfer platform moves relative to the fixed frame in a direction perpendicular to the conveying direction of the steel drum through a sliding drive unit;

[0034] The overturning bracket comprises a first overturning frame and a second overturning frame, and the second overturning frame is provided with a conveying assembly.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1. The feeding device, printing device and discharging device can all be adaptively adjusted according to the length and diameter of the steel drum, so that the outer wall of steel drums of various sizes can be printed by one device, which reduces the printing cost of steel drums of different sizes and at the same time reduces the space occupied by the steel drum printing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0038] Figure 2 It is a schematic diagram showing the relative positions of the vertical barrel conveying mechanism and the turning mechanism in the embodiment of the present application.

[0039] Figure 3 It is a schematic diagram of the structure of the vertical barrel conveying mechanism in the embodiment of the present application.

[0040] Figure 4 It is a schematic diagram showing the relative positions of the first blocking portion and the second blocking portion in an embodiment of the present application.

[0041] Figure 5 It is a schematic diagram of the flipping mechanism structure in the embodiment of the present application.

[0042] Figure 6 It is a schematic diagram showing the relative positions of a steel drum transport rack and a steel drum lifting rack in an embodiment of the present application.

[0043] Figure 7 It is a schematic diagram showing the relative positions of the first flip frame and the second flip frame in the embodiment of the present application.

[0044] Figure 8 yes Figure 6 Enlarged schematic diagram of part A.

[0045] Fig. 9 yes Figure 6 Schematic diagram of the enlarged portion B.

[0046] Fig.10 yes Figure 6 Enlarged schematic diagram of part C.

[0047] Fig.11 It is a schematic diagram of the steel drum transport rack structure in the embodiment of the present application.

[0048] Fig.12 It is a schematic diagram showing the relative positions of the steel drum lifting assembly and the steel drum printing mechanism in the embodiment of the present application.

[0049] Fig.13 yes Fig.12 Enlarged schematic diagram of part D in the figure.

[0050] Fig.14 It is a schematic diagram of the structure of the ink scraping assembly in the embodiment of the present application.

[0051] Description of reference numerals:

[0052] 1. Feeding device; 11. Vertical barrel conveying mechanism; 111. Conveying frame; 112. Conveying roller group; 113. Centering assembly; 1131. Centering guide frame; 1132. Centering guide frame power source; 1133. Centering guide wheel; 114. Conveying rhythm control assembly; 1141. First blocking part; 1142. Second blocking part; 12. Turning mechanism; 121. Fixed frame; 122. Transfer platform; 123. Turning bracket; 1231. First turning frame; 1232. Second turning frame; 1233. Conveying assembly; 12331. Reference conveying part; 123311. Reference frame; 123312. Conveying belt; 12332. Adjusting conveying part; 123321. Adjusting plate; 12333. Tensioning part; 1 2334, conveying power source; 123341, conveying plate; 123342, conveying rod; 122333, conveying wheel; 123344, conveying motor; 12335, adjusting conveying part power source; 124, turning blocking frame; 125, transfer platform power source; 126, turning bracket power source; 1261, turning rack; 1262, turning positioning frame; 1263, turning gear ring; 1264, turning cylinder; 2, printing device; 21, printing frame; 211, supporting assembly; 212, supporting positioning unit; 2121, first supporting member; 2122, second supporting member; 2123, supporting distance adjusting assembly; 21231, first supporting distance adjusting rod; 21232, second supporting distance adjusting rod; 21233, second locking assembly; 213, weld detection assembly; 2131, detection frame; 2132, rebound probe unit; 2133, displacement detection unit; 214, steel drum rotation adjustment assembly; 2141, rotation rod; 2142, rotation adjustment motor; 22, steel drum transport frame; 221, transport positioning unit; 2211, positioning groove; 222, vertical transport drive unit; 2221, guide frame; 2222, telescopic drive rod; 2223, linkage assembly; 22231, linkage frame; 22232, linkage rack; 22233, linkage gear; 22234, transmission rod; 223, horizontal transport drive unit; 23, steel drum lifting frame; 231, lifting assembly; 2311, limit Unit; 2312, first locking member; 2313, lock; 232, lifting and positioning unit; 2321, first lifting support member; 2322, second lifting support member; 2323, lifting spacing adjustment assembly; 233, vertical lifting unit; 24, steel drum printing mechanism; 241, printing support frame; 2411, printing drive unit; 24111, printing drive rack; 24112, printing motor; 242, screen printing template; 243, ink scraping assembly; 2431, ink scraping frame; 2432, ink scraping adjustment block; 2433, ink applying scraper; 2434, ink returning scraper; 244, template installation assembly; 2441, template installation frame; 2442, template locking assembly; 2443, installation drive unit;2444, position adjustment unit; 24441, coarse adjustment drive unit; 24442, fine adjustment drive unit; 3, discharge device. ; DETAILED DESCRIPTION

[0053] The following is combined with Figure 1-Figure 14 This application is described in further detail.

[0054] The embodiment of the present application discloses a flexible fully automatic steel drum screen printing production line.

[0055] A flexible fully automatic steel drum screen printing production line comprises a feeding device 1, a printing device 2 and a discharging device 3. The printing device 2 is located between the feeding device 1 and the discharging device 3, and the feeding device 1 and the discharging device 3 have similar structures.

[0056] When printing the outer wall of the steel drum, the steel drum is placed on the feeding device 1 and transported to the printing device 2 for printing. After printing is completed, the printed steel drum is transported to the unloading area through the discharging device 3.

[0057] The feeding device 1, the printing device 2 and the discharging device 3 can all be adaptively adjusted according to the length and diameter of the steel drum, so that the outer walls of steel drums of various sizes can be printed by one device, which reduces the printing cost of steel drums of different sizes and, at the same time, reduces the space occupied by the steel drum printing equipment.

[0058] The feeding device 1 includes a vertical barrel conveying mechanism 11 and a flipping mechanism 12, and the flipping mechanism 12 is located near the printing device 2. The vertical steel barrel is conveyed to the flipping mechanism 12 through the vertical barrel conveying mechanism 11 and flipped into a horizontal state, so as to facilitate the subsequent printing and conveying of the steel barrel.

[0059] The vertical barrel conveying mechanism 11 includes a conveying frame 111 , a conveying roller set 112 , a centering component 113 and a conveying rhythm control component 115 .

[0060] The conveyor frame 111 is placed on the ground, and the conveyor roller group 112 is installed on the conveyor frame 111. The conveyor roller group 112 includes a plurality of conveyor rollers, which are distributed along the length direction of the conveyor frame 111, and the plurality of conveyor rollers are parallel to each other and rotate with the conveyor frame 111. The conveyor rollers are rotated by a conveyor roller power source.

[0061] The power source of the conveying roller includes a conveying roller motor and a conveying chain. The conveying roller motor is fixed on the conveying frame 111, and the conveying chain is placed between two adjacent conveying rollers. The conveying roller motor drives the conveying rollers in the conveying roller group 112 to rotate synchronously through the conveying chain.

[0062] When conveying a vertical steel drum, the steel drum is placed vertically on the conveying roller set 112, and the vertical steel drum is driven to move by the conveying roller set 112. When conveying a steel drum, the vertical steel drum is less likely to get stuck between two adjacent conveying rollers than the horizontal steel drum, and is more stable during the conveying process.

[0063] The centering component 113 includes a pair of centering guide frames 1131. The two centering guide frames 1131 are installed on the conveying frame 111 and distributed on both sides of the conveying frame 111. The length direction of the centering guide frames 1131 is consistent with the conveying direction of the steel barrel, and the two centering guide frames 1131 are synchronously moved closer to or away from each other through the centering guide frame power source 1132.

[0064] When the vertical steel drum is being transported, the centering guide frame power source 1132 drives the two centering guide frames 1131 to approach each other, so that the two centering guide frames 1131 clamp the vertical steel drum, thereby realizing the centering of the steel drum. At the same time, during the transportation of the vertical steel drum, the two centering guide frames 1131 protect the steel drum, reducing the possibility of the steel drum tipping over or falling during the transportation process.

[0065] The centering guide frame power source 1132 includes a centering guide rail frame 2221, a centering threaded rod and a centering motor.

[0066] The centering guide rail frame 2221 is fixedly installed on the conveying frame 111 , the length direction of the centering guide rail frame 2221 is consistent with the length direction of the conveying roller, and the centering guide rail frame 2221 is located below the conveying roller group 112 .

[0067] Two centering slide blocks are arranged on the centering rail frame 2221, and the centering slide blocks are slidably matched with the centering rail frame 2221 along the length direction of the centering rail frame 2221. The centering guide frame 1131 and the centering slide blocks correspond one to one, and the centering guide frame 1131 is fixed on the corresponding centering slide block.

[0068] The centering threaded rod is installed on the centering guide rail frame 2221. The length direction of the centering threaded rod is consistent with the length direction of the centering guide rail frame 2221, and the centering threaded rod rotates with the centering guide rail frame 2221. The centering threaded rod passes through the two centering sliders and is threadedly connected with the two centering sliders. The centering threaded rod is provided with two sections of threads with opposite rotation directions. The two centering sliders correspond to the two sections of threads one by one, and the centering sliders are located at the corresponding threads.

[0069] The centering motor is connected to the centering threaded rod in a transmission manner. The centering threaded rod drives the two centering guide rail frames 2221 to move closer or farther synchronously during rotation.

[0070] Since the conveyor frame 111 is long, a plurality of centering assemblies 113 may be provided along the length direction of the conveyor frame 111. In order to ensure the working stability of the centering guide frame 1131, a plurality of centering guide frame power sources 1132 may also be provided on the conveyor frame 111 along the length direction of the conveyor frame 111.

[0071] In order to reduce the friction between the centering guide frame 1131 and the vertically placed steel drum, a plurality of centering guide wheels 1133 are provided along the length direction of the centering guide frame 1131 on the side where the two centering guide frames 1131 are close to each other, and each centering guide wheel 1133 is rotationally matched with the centering guide frame 1131, and each centering guide wheel 1133 is rollingly matched with the outer wall of the vertically placed steel drum.

[0072] The delivery rhythm control component 115 includes a first blocking portion 1151 and a second blocking portion 1152 .

[0073] The first blocking portion 1151 and the second blocking portion 1152 are distributed along the length direction of the conveying frame 111 , and a conveying area is formed between the first blocking portion 1151 and the feeding end of the conveying frame 111 , and a waiting area is formed between the first blocking portion 1151 and the second blocking portion 1152 .

[0074] The first blocking part 1151 releases a single steel barrel into the waiting area. After the steel barrel in the waiting area is released and moved out through the second blocking part 1152, the next steel barrel is released through the first blocking part 1151, thereby controlling the conveying rhythm of the steel barrels.

[0075] When the first blocking portion 1151 blocks the upright steel drum, the steel drum is in a stationary state. In the event of an emergency shutdown, the possibility of the steel drum tipping over due to inertia is reduced, thereby reducing the risk of accidents.

[0076] The first blocking part 1151 includes a pair of blocking rods, the tops of which are inserted from two adjacent conveying rollers of the conveying roller group 112, and the two blocking rods are moved closer to or away from each other by a blocking rod power source. When releasing the steel drum, the blocking rod power source moves the two blocking rods away from each other, and when the steel drum needs to be blocked, the blocking rod power source moves the two blocking rods closer to each other.

[0077] In order to reduce the friction between the blocking rod and the steel drum, a blocking cylinder is sleeved on the blocking rod. The blocking cylinder is rotationally matched with the blocking rod, and the outer wall of the blocking cylinder is rollingly matched with the outer wall of the steel drum.

[0078] In the embodiment of the present application, the blocking rod power source is similar in structure to the centering guide frame power source 1132 .

[0079] The second blocking portion 1152 is installed at a position of the conveying frame 111 close to the discharge end of the conveying frame 111. In the embodiment of the present application, the second blocking portion 1152 is a blocking cylinder.

[0080] After the flipping mechanism 12 is vacated, the second blocking part 1152 releases the steel drum. By changing the overall length of the blocking cylinder, the top of the blocking cylinder is made lower than the top of the conveying roller group 112 to release the steel drum, thereby further controlling the conveying rhythm of the steel drum.

[0081] The turning mechanism 12 includes a fixing frame 114 , a transfer platform 121 , a turning bracket 122 and a turning blocking frame 123 .

[0082] The fixed frame 114 is located between the conveying frame 111 and the printing device 2, and the fixed frame 114 is placed on the ground. The transfer platform 121 is located on the top of the fixed frame 114, and the length direction of the transfer platform 121 is perpendicular to the conveying direction of the steel drum. The transfer platform 121 moves relative to the fixed frame 114 along the length direction of the transfer platform 121 through the transfer platform power source 125.

[0083] In the embodiment of the present application, the power source 125 of the transfer platform is a screw slider mechanism, and the slider of the screw slider mechanism is fixedly connected to the transfer platform 121.

[0084] The flip bracket 122 is mounted on the transfer platform 121 and rotates relative to the transfer platform 121 through the flip bracket power source 126. The flip blocking frame 123 is mounted on the transfer platform 121 near the flip bracket 122.

[0085] The steel drum released by the second blocking part 1152 is transported to the turning bracket 122, and the steel drum placed vertically on the turning bracket 122 is positioned by the turning blocking bracket 123. Then, the steel drum placed vertically is turned to be placed horizontally by the turning bracket 122, so as to be transported to the printing device 2 for printing on the outer wall of the steel drum. During the turning process of the steel drum, the turning blocking bracket 123 gradually releases the limit on the steel drum.

[0086] Before the overturning bracket 122 overturns the steel drum, the overturning bracket 122 is driven to move by the transfer platform 121 so that the feeding end of the overturning bracket 122 is aligned with the discharging end of the conveying frame 111. After the overturning bracket 122 overturns the steel drum, the overturning bracket 122 is driven to move again by the transfer platform 121 so that the discharging end of the overturning bracket 122 is aligned with the feeding end of the printing device 2, so as to facilitate the conveying of the steel drum from the feeding device 1 to the printing device 2.

[0087] The flip bracket 122 includes a first flip bracket 1221 and a second flip bracket 1222 , and the flip bracket 122 is configured in an L-shape as a whole. A conveying assembly 1223 is disposed on the second flip bracket 1222 .

[0088] When the flip bracket 122 is in an initial state, the first flip bracket 1221 is horizontally arranged, and the second flip bracket 1222 is vertically arranged.

[0089] After the second blocking portion 1152 is released, the upright steel drum is placed vertically on the first overturning frame 1221 under the action of inertia and contacts the overturning blocking frame 123 , and the upright steel drum is blocked and positioned by the overturning blocking frame 123 .

[0090] Then, the flip bracket 122 is driven by the flip bracket power source 126 to flip the steel barrel as a whole to a horizontal position. After the discharge end of the flip bracket 122 and the feed end of the printing device 2 are aligned, the horizontally placed steel barrel is transported to the printing device 2 through the conveying component 1223.

[0091] When the steel drum is placed on the first turning frame 1221, in order to reduce the friction between the first turning frame 1221 and the steel drum, a plurality of rotating rollers are provided on the first turning frame 1221. The plurality of rotating rollers are distributed along the conveying direction of the steel drum, each rotating roller is rotatably matched with the first turning frame 1221, and the length direction of each rotating roller is perpendicular to the conveying direction of the steel drum.

[0092] The rotating roller and the steel drum roll in cooperation with each other, thereby reducing the moving friction of the steel drum on the first turning frame 1221 , so as to facilitate the contact between the steel drum and the turning blocking frame 123 .

[0093] The flip blocking frame 123 is fixedly installed on the transfer platform 121 , and the flip blocking frame 123 is arranged in a plate shape, and the conveying direction of the steel drum is perpendicular to the plate surface of the flip blocking frame 123 .

[0094] When the first turning frame 1221 is in a horizontal state, the turning blocking frame 123 passes through two adjacent rotating rollers to block and position the steel drum on the first turning frame 1221. After the first turning frame 1221 is turned over to a vertical state, the turning blocking frame 123 is separated from the first turning frame 1221, thereby releasing the steel drum on the first turning frame 1221.

[0095] The flip support power source 126 includes a flip rack 1251, a flip positioning frame 1252, a flip gear ring 1253 and a flip cylinder 1254. The flip rack 1251 is located at the top of the transfer platform 121, the length direction of the flip rack 1251 is consistent with the moving direction of the transfer platform 121, and the flip rack 1251 and the transfer platform 121 are slidably matched.

[0096] The flip positioning frame 1252 is fixed on the transfer platform 121, one side of the flip gear ring 1253 is fixed at the junction of the first flip frame 1221 and the second flip frame 1222, the other side of the flip gear ring 1253 is rotationally matched with the flip positioning frame 1252, and the flip gear ring 1253 is meshed with the flip rack 1251. The flip cylinder 1254 is fixed on the transfer platform 121, and the push rod of the flip cylinder 1254 is transmission-matched with the flip rack 1251.

[0097] The flip rack 1251 is driven to move on the transfer platform 121 by the flip cylinder 1254 . During the movement of the flip rack 1251 , the flip rack 1251 drives the flip bracket 122 to flip via the flip gear ring 1253 .

[0098] In order to improve the stability of the flip bracket 122 at the end of the flipping process, a buffer component is provided at the end position of the transfer platform 121 close to the flip rack 1251. In the embodiment of the present application, the buffer component is a hydraulic buffer.

[0099] At the end of the flipping process of the flipping bracket 122, the hydraulic buffer contacts the flipping rack 1251 to slow down the moving speed of the flipping rack 1251, thereby slowing down the flipping speed of the flipping bracket 122, reducing the possibility of collision damage between the flipping bracket 122 and the transfer platform 121 due to excessive flipping speed at the end of the flipping process, and at the same time, further improving the stability of the steel drum during the flipping process.

[0100] The conveying assembly 1223 includes a reference conveying portion 12231 and an adjusting conveying portion 12232. The reference conveying portion 12231 and the adjusting conveying portion 12232 are synchronously driven by a conveying power source 12234. Both the reference conveying portion 12231 and the adjusting conveying portion 12232 are mounted on the second flip frame 1222, and the adjusting conveying portion 12232 moves with the second flip frame 1222 in a direction close to or away from the reference conveying portion 12231 through the adjusting conveying portion power source 12335.

[0101] The spacing between the adjusting conveying part 12232 and the reference conveying part 12231 is changed according to the different lengths of the steel drum. When the second flip frame 1222 is in a horizontal state, the reference conveying part 12231 and the adjusting conveying part 12232 cooperate with each other to support the horizontally placed steel drum, and cooperate with each other to convey the steel drum to the printing assembly.

[0102] The reference conveying unit 12231 includes a reference frame 122311 and a conveying belt 122312 .

[0103] The reference frame 122311 is fixedly mounted on the second overturn frame 1222, the conveyor belt 122312 is located on the reference frame 122311, the power source of the conveyor belt 122312 drives the conveyor belt 122312 to move, and during the working process of the conveyor belt 122312, the reference frame 122311 supports the conveyor belt 122312. The horizontal steel drum is placed on the conveyor belt 122312, and the conveyor belt 122312 drives the steel drum to move.

[0104] In order to further improve the stability of the conveyor belt 122312 during operation, a tensioning portion 12233 is provided near the conveyor belt 122312 to change the tension of the conveyor belt 122312. The tensioning portion 12233 includes a tensioning rod and a tensioning wheel. The tensioning rod is mounted on the second flip frame 1222, and the tensioning wheel is mounted on the tensioning rod. The tensioning wheel and the tensioning rod are rotationally matched, and the tensioning wheel and the conveyor belt 122312 are rolling matched. A plurality of tensioning nuts are threadedly connected to the tensioning rod. The position of the tensioning wheel is adjusted by the relative position of the tensioning nut and the tensioning rod, and the second flip frame 1222 is clamped by two adjacent tensioning nuts, thereby adjusting the tension of the conveyor belt 122312.

[0105] The tensioning wheel is provided with a tensioning groove, and the conveyor belt 122312 is placed inside the tensioning groove. During the operation of the conveyor belt 122312, the groove wall of the tensioning groove guides and limits the conveyor belt 122312.

[0106] The structure of the adjusting conveying part 12232 is similar to that of the reference conveying part 12231. The difference between the adjusting conveying part 12232 and the reference conveying part 12231 is that the adjusting conveying part 12232 also includes an adjusting plate 122321, and the adjusting plate 122321 is fixedly mounted on the reference frame 122311 on the adjusting conveying part 12232. The adjusting plate 122321 is parallel to the first flip frame 1221, and the adjusting plate 122321 and the first flip frame 1221 cooperate with each other to clamp the two ends of the steel drum.

[0107] In an embodiment of the present application, the power source 12335 of the adjusting conveying part is a screw slider mechanism, and the slider of the screw slider mechanism is fixedly connected to the reference frame 122311 of the adjusting conveying part 12232. The reference frame 122311 of the adjusting conveying part 12232 is driven to move by the slider of the screw slider mechanism to adjust the distance between the reference conveying part 12231 and the adjusting conveying part 12232, so as to adapt to steel drums of different lengths.

[0108] The conveying power source 12234 includes a conveying plate 122341, a conveying rod 122342, a conveying wheel 122343 and a conveying motor 122344. The conveying plate 122341 and the conveying wheel 122343 are both provided with two groups along the conveying direction of the steel drum.

[0109] Each group of conveying plates 122341 is provided with a pair, and the two conveying plates 122341 of each pair of conveying plates 122341 are respectively fixedly mounted on the second turning frame 1222 at a position close to the first turning frame 1221 and a position far away from the first turning frame 1221 .

[0110] There are two conveying rods 122342, and the two conveying rods 122342 correspond to the two groups of conveying plates 122341 one by one. Each conveying rod 122342 penetrates a pair of conveying plates 122341 of each group of conveying plates 122341, and the conveying rods 122342 and the conveying plates 122341 are rotatably matched.

[0111] Each group of conveying wheels 122343 includes two conveying wheels 122343, one conveying wheel 122343 is located near the conveying belt 122312 of the reference conveying part 12231, and is in transmission cooperation with the conveying belt 122312 of the reference conveying part 12231, and the other conveying wheel 122343 is located near the adjusting conveying part 12232, and is in transmission cooperation with the conveying belt 122312 of the adjusting conveying part 12232.

[0112] In order to facilitate the synchronous movement of the adjustable conveying part 12232 and the conveying wheel 122343, the conveying wheel 122343 close to the adjustable conveying part 12232 is fixed on the reference frame 122311 of the adjustable conveying part 12232, the two conveying rods 122342 and the two groups of conveying wheels 122343 correspond one to one, and the conveying rods 122342 pass through each corresponding group of conveying wheels 122343.

[0113] The conveying motor 122344 is fixed on the second flip frame 1222, and the conveying motor 122344 is in driving cooperation with the conveying rod 122342. In order to facilitate the conveying rod 122342 to drive the conveying wheel 122343 to rotate, each conveying rod 122342 includes an integrally formed round rod and a polygonal rod, the round rod and the polygonal rod are coaxial, two round rods are provided, and the two round rods are respectively located at the two ends of the polygonal rod, the round rod and the conveying plate 122341 are in rotation cooperation, and a polygonal hole corresponding to the polygonal rod is opened on the conveying wheel 122343, and the polygonal rod is plugged and cooperated with the polygonal hole.

[0114] When the steel drum is vertically placed on the first turning frame 1221, the adjusting plate 122321 is moved toward the top of the steel drum, and the adjusting plate 122321 and the first turning frame 1221 cooperate with each other to clamp the steel drum.

[0115] After the flip bracket 122 flips the upright steel barrel to a horizontal position, the two conveyor belts 122312 support the two ends of the horizontal steel barrel and convey the steel barrel to the printing device 2.

[0116] The structures of the feeding device 1 and the discharging device 3 are similar.

[0117] The printing device 2 includes a printing frame 21 , a steel drum transport frame 22 , a steel drum lifting frame 23 and a steel drum printing mechanism 24 .

[0118] The printing frame 21 is located between the feeding device 1 and the discharging device 3 , and the printing frame 21 is fixed on the ground.

[0119] Two groups of support components 211 with adjustable spacing are provided on the printing frame 21 along the conveying direction of the steel drum, each group of support components 211 with adjustable spacing is provided with a pair of support components 211, and each support component 211 is provided with a plurality of support positioning units 212 along the conveying direction of the steel drum.

[0120] The steel drum transport frame 22 is installed on the support assembly 211 , the steel drum lifting frame 23 is located between the two groups of support assemblies 211 , and the steel drum printing mechanism 24 is installed on the top of the printing frame 21 near the steel drum lifting frame 23 .

[0121] The feeding device 1 conveys the horizontally placed steel drum to the support and positioning unit 212 on the support assembly 211, and supports the steel drum through the support and positioning unit 212. Then, the steel drum on the support and positioning unit 212 is placed on the support and positioning unit 212 at different stations along the conveying direction of the steel drum through the steel drum transporting rack 22, so as to convey the steel drum.

[0122] The steel barrel transporting rack 22 transports the horizontally placed steel barrel to the steel barrel lifting rack 23, and the steel barrel lifting rack 23 lifts the steel barrel to the position of the steel barrel printing mechanism 24. After printing by the steel barrel printing mechanism 24, the steel barrel is reset by the steel barrel lifting rack 23, and then, the steel barrel is transported to the discharging device 3 by the steel barrel transporting rack 22 again for unloading.

[0123] Each group of support components 211 drives two support components 211 in the same group to move closer or farther synchronously through a synchronous screw mechanism to adapt to steel drums of different lengths.

[0124] Each group of support positioning units 212 includes a first support member 2121 and a second support member 2122. In the embodiment of the present application, the first support member 2121 and the second support member 2122 are both support positioning wheels, and the first support member 2121 and the second support member 2122 are distributed on the support assembly 211 along the conveying direction of the steel drum, and the first support member 2121 and the second support member 2122 are adjusted in the conveying direction of the steel drum by the support distance adjustment assembly (2123) to adapt to different diameters of the steel drum.

[0125] The support distance adjustment assembly (2123) includes a first support distance adjustment rod 21231 and a second support distance adjustment rod 21232. The first support distance adjustment rod 21231 and the second support distance adjustment rod are movably connected to the support assembly 211, and the length direction of the first support distance adjustment rod 21231 and the second support distance adjustment rod 21232 is consistent with the conveying direction of the steel drum, the first support member 2121 is installed on the first support distance adjustment rod 21231, and the second support member 2122 is installed on the second support distance adjustment rod 21232.

[0126] The steel drum lifting frame 23 is provided with a pair of lifting components 231 with adjustable spacing, and each lifting component 231 is provided with a lifting positioning unit 232. The steel drum lifting frame 23 moves relative to the support component 211 in the vertical direction through the vertical lifting unit 233.

[0127] After the steel barrel transporting frame 22 transports the steel barrel to the lifting and positioning unit 232 on the steel barrel lifting frame 23, the steel barrel is moved in the vertical direction by the vertical lifting unit 233. In the embodiment of the present application, the vertical lifting unit 233 is a screw module.

[0128] The two lifting assemblies 231 correspond one to one with the two supporting assemblies 211 of each group of supporting assemblies 211, and a limiting unit 2311 is provided between each lifting assembly 231 and the corresponding supporting assembly 211, and each limiting unit 2311 includes two limiting plates, which are respectively fixedly mounted on both sides of the supporting assembly 211 close to one end of the lifting assembly 231, and a limiting area is formed between the two limiting plates.

[0129] When the lifting assembly 231 is located in the limiting area, when the two support assemblies 211 adjust the distance, the support assembly 211 drives the lifting assembly 231 to adjust the distance synchronously through the limiting unit 2311. When the lifting assembly 231 moves out of the limiting area in the vertical direction, the limiting unit 2311 releases the limit on the lifting assembly 231.

[0130] The steel drum lifting frame 23 is provided with two limit rods, the length direction of the two limit rods is perpendicular to the steel drum conveying direction, and the two limit rods are parallel to each other, and the limit rods and the steel drum lifting frame 23 slide together along their own length direction, the two lifting components 231 correspond to the two limit rods one by one, and the lifting components 231 are fixed on the corresponding limit rods.

[0131] A rack is provided along the length direction of the two limit rods on the side close to each other, and a first locking member 2312 is provided between two adjacent racks. The first locking member 2312 is an electromagnetic gear clutch.

[0132] When the lifting assembly 231 is out of the limiting area, the first locking member 2312 fixes the distance between the two lifting assemblies 231 by locking the two limiting rods.

[0133] The lifting and positioning unit 232 includes a first lifting support member 2321 and a second lifting support member 2322. The first lifting support member 2321 and the second lifting support member 2322 adjust the spacing in the conveying direction of the steel drum through a lifting spacing adjustment component 2323, and the lifting spacing adjustment component 2323 includes a first lifting distance adjustment rod and a second lifting distance adjustment rod. The first lifting distance adjustment rod is detachably connected to the first support distance adjustment rod 21231 through a lock 2313, and the second lifting distance adjustment rod is also detachably connected to the second support distance adjustment rod 21232 through the lock 2313.

[0134] A rack is provided on the side where the first lifting distance adjusting rod and the second lifting distance adjusting rod are close to each other, a driving motor is provided between the racks of the first lifting distance adjusting rod and the second lifting distance adjusting rod, and a rotating tooth meshing with the two racks is provided on the motor shaft of the driving motor.

[0135] The driving motor drives the first lifting distance adjustment rod and the second lifting distance adjustment rod to move relative to each other. At the same time, the first support distance adjustment rod 21231 and the second support distance adjustment rod 21232 move synchronously through the lock 2313, thereby synchronously adjusting the working range of the lifting positioning unit 232 and the support positioning unit 212.

[0136] A rack is provided on the side where the first support distance adjustment rod 21231 and the second support distance adjustment rod 21232 are close to each other. A second locking member is provided between the racks of the first support distance adjustment rod 21231 and the second support distance adjustment rod 21232. The second locking member is also an electromagnetic gear clutch to ensure that the distance between the first support member 2121 and the second support member 2122 in the same support positioning unit 212 remains fixed for a long time.

[0137] The steel drum printing mechanism 24 includes a printing support frame 241 , a screen printing template 242 and an ink scraping assembly 243 .

[0138] The printing support frame 241 is installed on the top of the printing frame 21, and the printing support frame 241 moves relative to the printing frame 21 along the conveying direction of the steel drum through the printing drive unit 2411; the screen printing template 242 is installed on the printing support frame 241 through the template mounting assembly 244, and the length direction of the screen printing template 242 is consistent with the conveying direction of the steel drum; the ink scraper assembly 243 is installed on the printing frame 21 and is used to contact the top of the screen printing template 242.

[0139] The template mounting assembly 244 includes a template mounting frame 2441 and a template locking assembly 2442. The template mounting frame 2441 is mounted on the printing support frame 241, and slides with the printing support frame 241 along the conveying direction of the steel drum through the installation drive unit 2443; the template locking assembly 2442 is provided with multiple groups, each group of template locking assemblies 2442 is adapted to the screen printing template 242, and each group of template locking assemblies 2442 is provided with two, the two template locking assemblies 2442 are respectively mounted on the printing support frame 241 and the template mounting frame 2441, and the screen printing template 242 is mounted on the printing support frame 241 and the template mounting frame 2441 through the template locking assembly 2442.

[0140] The printing drive unit 2411 includes a printing drive rack 24111 and a printing motor 24112. The printing drive rack 24111 is installed on the printing support frame 241, and the length direction of the printing drive rack 24111 is consistent with the conveying direction of the steel drum. The motor shaft of the printing motor 24112 is equipped with a printing drive gear, and the printing drive gear and the printing drive rack 24111 are meshed. The printing motor 24112 drives the printing drive rack 24111 to move through the printing drive gear, thereby moving the printing support frame 241.

[0141] When installing the screen printing template 242, the screen printing template 242 is located between the printing support frame 241 and the template mounting frame 2441, and then the driving unit 2443 is installed to move the template mounting frame 2441 forward and backward along the conveying direction of the steel drum, so that the two template locking assemblies 2442 clamp the screen printing template 242, thereby completing the fixation of the screen printing template 242.

[0142] Multiple screen printing templates 242 are convenient for spraying different information onto the outer wall of the steel drum at the same time. In order to adapt to the printing position of the steel drum, each set of template locking assemblies 2442 can slide relative to the printing support frame 241, and move relative to the printing support frame 241 through the position adjustment unit 2444 in a direction perpendicular to the conveying direction of the steel drum.

[0143] The position adjustment unit 2444 includes a coarse adjustment drive unit 24441 and a fine adjustment drive unit 24442. The coarse adjustment drive unit 24441 is a screw module. The screw module drives each set of template locking components 2442 to move perpendicular to the conveying direction of the steel drum.

[0144] The two locking clips in the same set of template locking components 2442 have one locking frame installed on the printing support frame 241 and the other locking frame installed on the template mounting frame 2441 .

[0145] The fine-tuning driving unit 24442 includes a locking frame and a connecting adjustment frame.

[0146] The connecting and adjusting frame is movably mounted on the locking frame, and the connecting and adjusting frame can slide and cooperate with the locking frame perpendicular to the conveying direction of the steel drum. The connecting and adjusting frame is threadedly connected with a connecting bolt, and the end of the connecting bolt contacts the locking frame.

[0147] The spacing between two adjacent screen printing templates 242 is fine-tuned by adjusting the position of the connecting adjustment frame, so as to adjust the line spacing of the steel drum spraying. After the connecting adjustment frame is adjusted, the relative position of the connecting adjustment frame and the locking frame is fixed by connecting bolts.

[0148] An opening is provided on one side of the connecting and adjusting frame close to the screen printing template 242, and the screen printing template 242 and the opening of the connecting and adjusting frame are plugged in and matched, and a fastening bolt is threadedly connected to the connecting and adjusting frame, and the end of the fastening bolt is in contact with the screen printing template 242. After the screen printing template 242 is inserted into the opening of the locking frame, the screen printing template 242 is tightened against the opening of the locking frame by the fastening bolt.

[0149] The ink scraping assembly 243 includes an ink scraping frame 2431, an ink scraping adjustment block 2432, an inking scraper 2433 and an ink returning scraper 2434. The ink scraping frame 2431 is mounted on the printing frame 21; the ink scraping adjustment block 2432 is slidably mounted on the ink scraping frame 2431, and moves in a direction perpendicular to the steel drum conveying direction through an ink scraping sliding drive unit to adapt to the position of the screen printing template 242. A plurality of ink scraping adjustment blocks 2432 are provided, and a plurality of screen printing templates 242 correspond to the ink scraping adjustment blocks 2432 one by one. The inking scraper 2433 is mounted on the ink scraping adjustment block 2432, and the inking scraper 2433 moves relative to the inking frame in the vertical direction through the inking drive unit; the ink returning scraper 2434 is mounted on the ink scraping adjustment block 2432, and the ink returning scraper 2434 moves relative to the inking frame in the vertical direction through the ink returning drive unit.

[0150] After the steel drum lifting frame 23 transports the steel drum to a position close to the screen printing template 242, the printing support frame 241 moves in the direction of the steel drum transportation, and the screen printing template 242 moves relative to the inking scraper 2433. The ink of the screen printing template 242 is scraped onto the steel drum by the inking scraper 2433. While the ink drips onto the steel drum, the friction between the screen printing template 242 and the steel drum drives the steel drum to rotate, making it easier to print the ink on the steel drum.

[0151] After the inking scraper 2433 reaches the end of the screen printing template 242, the inking scraper 2433 is lifted up by the inking drive unit, and the ink return scraper 2434 is brought into contact with the screen printing template 242 by the ink return drive unit, and the printing support frame 241 is reset. During the resetting process of the printing support frame 241, the ink return scraper 2434 scrapes the ink inside the screen printing template 242 to the initial position, so as to facilitate the ink to be scraped onto the steel drum again.

[0152] The ink application drive unit and the ink return drive unit are both cylinders. Since the screen printing template 242 is prone to slight deformation during long-term operation, in order to facilitate scraping and applying ink, the ink application drive unit and the top of the ink application scraper 2433 are movably connected, and the ink return drive unit and the top of the ink return scraper 2434 are movably connected, so as to increase the contact area between the bottom of the ink application scraper 2433 and the bottom of the ink return scraper 2434, so as to facilitate ink application or ink return.

[0153] At least one pair of steel drum transport racks 22 is provided. In the embodiment of the present application, two pairs of steel drum transport racks 22 are provided. Each pair of steel drum transport racks 22 is adapted to each pair of support assemblies 211 , and the two steel drum transport racks 22 and the two support assemblies 211 correspond one to one.

[0154] The steel drum transport frame 22 moves relative to the printing frame 21 in the vertical direction through the vertical transport driving unit 222, and moves relative to the printing frame 21 in the horizontal direction through the horizontal transport driving unit 223. The transport positioning unit 221 is installed on the steel drum transport frame 22, and is provided with a plurality of transport positioning units along the steel drum conveying direction.

[0155] After the feeding device 1 places the steel barrel on the support assembly 211, the steel barrel transport frame 22 moves upward under the drive of the vertical transport drive unit 222, and lifts the steel barrel placed on the support assembly 211 through the transport positioning unit 221, and then moves the steel barrel transport frame 22 along the steel barrel conveying direction through the horizontal transport drive unit 223, and then transports the steel barrel to the top of the next support positioning unit 212, and then moves the steel barrel transport frame 22 downward again through the vertical transport drive unit 222, and places the steel barrel on the transport positioning unit 221 on the support positioning unit 212, and the steel barrel is transported in this cycle, which improves the convenience of controlling the rhythm of transporting the steel barrel and reduces the possibility of the steel barrel rotating during the transport process.

[0156] The vertical transport driving unit 222 includes a guide rail frame 2221 and a telescopic driving rod 2222 .

[0157] At least one pair of guide rails 2221 is provided, and the guide rails 2221 are matched with the steel barrel transport frame 22, and the steel barrel transport frame 22 is installed on the guide rails 2221. The length direction of the guide rails 2221 is consistent with the steel barrel conveying direction. The telescopic driving rod 2222 is vertically installed on the printing machine frame 21, and the push rod end of the telescopic driving rod 2222 is installed on the guide rails 2221. In the embodiment of the present application, the telescopic driving rod 2222 is a cylinder.

[0158] When the steel barrel transporting frame 22 needs to be moved in the vertical direction, the guide rail frame 2221 is pushed to move by the telescopic driving rod 2222, and the guide rail frame 2221 drives the steel barrel transporting frame 22 to move in the vertical direction.

[0159] Since the guide rail frame 2221 is relatively long, in order to improve the working stability of the guide rail frame 2221 , a linkage assembly 2223 is provided on the guide rail frame 2221 .

[0160] The linkage assembly 2223 includes a linkage frame 22231 , linkage teeth 22233 strips 22232 , linkage teeth 22233 and a transmission rod 22234 .

[0161] The linkage frame 22231 is installed on the printing frame 21, and a plurality of linkage frames 22231 are arranged along the printing frame 21. The linkage teeth 22233 strips 22232 are matched with a plurality of linkage frames 22231, and the linkage teeth 22233 strips 22232 and the linkage frames 22231 slide in the vertical direction, and the linkage teeth 22233 strips 22232 are installed on the guide rail frame 2221. The linkage teeth 22233 are installed on the linkage frame 22231, and the linkage teeth 22233 and the linkage frame 22231 rotate, and the linkage teeth 22233 are matched with a plurality of linkage teeth 22233 strips 22232, and the linkage teeth 22233 are meshed with the linkage teeth 22233 strips 22232; the transmission rod 22234 coaxially penetrates a plurality of linkage teeth 22233, and is fixed to the linkage teeth 22233.

[0162] When the guide rail frame 2221 moves in the vertical direction, the guide rail frame 2221 drives the linkage teeth 22233 22232 to move synchronously in the vertical direction. Since the linkage teeth 22233 22232 are engaged with the linkage teeth 22233, the linkage teeth 22233 22232 drive the linkage teeth 22233 to rotate during the vertical movement. Since the linkage teeth 22233 and the transmission rod 22234 are fixedly connected, it is convenient for multiple linkage teeth 22233 22232 to move synchronously, thereby improving the working stability of the guide rail frame 2221.

[0163] A guide cylinder is provided on the linkage frame 22231, and the linkage teeth 22233 strips 22232 are placed inside the guide cylinder and slide with the guide cylinder. During the movement of the linkage teeth 22233 strips 22232, the guide cylinder guides the linkage teeth 22233 strips 22232, thereby improving the working stability of the linkage teeth 22233 strips 22232.

[0164] The horizontal transport drive unit 223 is a magnetic coupling linear motion actuator, which is mounted on the guide rail frame 2221, and the slider of the magnetic coupling linear motion actuator is fixed to the steel barrel transport frame 22. In the embodiment of the present application, the magnetic coupling linear motion actuator is a magnetic coupling rodless cylinder.

[0165] In the embodiment of the present application, the transport positioning unit 221 is arranged in a plate shape, and the transport positioning unit 221 is provided with a V-shaped groove, and the end of the steel drum is placed in the groove.

[0166] In order to facilitate placing the steel barrel of the feeding device 1 on the steel barrel transport rack 22, an initial support rack is fixedly installed on one end of the support assembly 211 close to the feeding device 1. The initial support rack is arranged in a V shape as a whole to facilitate the steel barrel at the feeding device 1 to roll into the initial support rack.

[0167] Similarly, in order to facilitate the transportation of the steel barrel to the discharge device 3, a terminal guide plate is fixedly installed at a position of the support assembly 211 close to the discharge device 3, and the top of the terminal guide plate is inclined downward close to one end of the discharge device 3.

[0168] In order to facilitate the adjustment of the weld position of the steel drum and reduce the possibility of printing on the weld when printing on the steel drum.

[0169] A weld detection assembly 213 and a steel drum rotation adjustment assembly 214 are provided at a position of the printing frame 21 close to the flip assembly.

[0170] The weld detection assembly 213 includes a detection frame 2131 , a rebound probe unit 2132 and a displacement detection unit 2133 .

[0171] The detection frame 2131 is fixedly mounted on the printing machine frame 21, and a detection box is fixedly mounted on the detection frame 2131. The rebound probe unit 2132 includes a probe and a spring, the probe is vertically mounted on the detection box, and the probe slides with the detection box in the vertical direction, the top of the probe contacts the outer wall of the steel barrel, and a limit ring is provided on the probe.

[0172] The displacement detection unit 2133 is installed inside the detection box, and the spring is sleeved on the probe. One end of the spring is in contact with the limit ring, and the other end of the spring is based on the displacement detection unit 2133. In the implementation of this application, the displacement detection unit 2133 is a pressure sensor.

[0173] When inspecting the weld of a steel drum, the steel drum is rotated. During the rotation of the steel drum, the top of the probe contacts the steel drum in real time under the elastic force of the spring. When the weld of the steel drum contacts the probe, the probe will move, thereby changing the elastic force of the spring squeezing the pressure sensor. When the pressure sensor detects a sudden change in the pressure signal, it means that the weld is located at the probe.

[0174] When inspecting welds, the weld inspection component 213 may also be a visual inspection camera.

[0175] The steel drum rotation adjustment assembly 214 includes a rotation rod 2141 and a rotation adjustment motor 2142 .

[0176] The rotary adjustment motor 2142 is fixed on the printing frame 21, and the rotary adjustment motor 2142 drives the supporting positioning wheel to rotate through the rotating rod 2141. Since the supporting positioning wheel supports the steel barrel, it is convenient to drive the steel barrel to rotate. After the weld of the steel barrel is located at the probe, the steel barrel can be rotated to a certain angle by the rotary adjustment motor 2142 according to the range of printing required on the outer wall of the steel barrel.

[0177] The supporting positioning wheel includes an integrally formed limiting wheel and a supporting wheel. The limiting wheel is located on the side of the supporting wheel away from the conveying direction of the steel drum, and the diameter of the limiting wheel is larger than the diameter of the positioning wheel. When placing the steel drum, the steel drum is placed on the positioning wheel, and two adjacent limiting wheels clamp the steel drum, thereby facilitating the limiting of the steel drum.

[0178] After adjusting the weld position of the steel drum, the conveying and positioning unit 221 on the semicircular frame of the steel drum drives the steel drum to be gradually conveyed to the lifting frame without rotating the steel drum.

[0179] The implementation principle of a flexible fully automatic steel drum screen printing production line in the embodiment of the present application is as follows: during the steel drum printing process, the steel drum is first placed vertically on the conveying roller group 112 of the feeding device 1, and the steel drum is moved along the conveying direction of the steel drum by the rotating conveying roller group 112. The centering component 113 centers the steel drum and reduces the conveying resistance through the centering guide frame 1131 and the centering guide wheel 1133. The conveying rhythm control component 115 controls the conveying rhythm of the steel drum to ensure that the steel drum is accurately blocked and released at the flipping mechanism 12. The flipping mechanism 12 flips the steel drum to a horizontal state through the flipping bracket power source 126 and conveys it to the printing device 2. In the printing device 2, the steel drum is placed on the support positioning unit 212 of the support component 211, and the steel drum transport frame 22 transports the steel drum along the conveying direction of the steel drum to the steel drum lifting frame 23, and the steel drum lifting frame 23 lifts the steel drum to the printing position. The screen printing template 242 of the steel drum printing mechanism 24 moves relative to the inking scraper 2433, scraping the ink onto the steel drum. At the same time, the steel drum is driven to rotate by the friction of the screen printing template 242 and itself, so that the ink is evenly printed on the steel drum. After printing is completed, the steel drum lifting frame 23 resets the steel drum, and the steel drum transporting frame 22 transports the steel drum to the discharging device 3 for unloading.

[0180] The implementation principle of a flexible fully automatic steel drum screen printing production line in the embodiment of the present application is as follows: during the steel drum printing process, the steel drum is first placed vertically on the conveying roller group 112 of the feeding device 1, and the steel drum is moved along the conveying direction of the steel drum by the rotating conveying roller group 112. The centering component 113 centers the steel drum and reduces the conveying resistance through the centering guide frame 1131 and the centering guide wheel 1133. The conveying rhythm control component 115 controls the conveying rhythm of the steel drum to ensure that the steel drum is accurately blocked and released at the flipping mechanism 12. The flipping mechanism 12 flips the steel drum to a horizontal state through the flipping bracket power source 126 and conveys it to the printing device 2. In the printing device 2, the steel drum is placed on the support positioning unit 212 of the support component 211, and the steel drum transport frame 22 transports the steel drum along the conveying direction of the steel drum to the steel drum lifting frame 23, and the steel drum lifting frame 23 lifts the steel drum to the printing position. The screen printing template 242 of the steel drum printing mechanism 24 moves relative to the inking scraper 2433, scraping the ink onto the steel drum. At the same time, the steel drum is driven to rotate by the friction of the screen printing template 242 and itself, so that the ink is evenly printed on the steel drum. After printing is completed, the steel drum lifting frame 23 resets the steel drum, and the steel drum transporting frame 22 transports the steel drum to the discharging device 3 for unloading.

[0181] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flexible fully automatic steel drum screen printing production line, characterized by: It includes a feeding device, a printing device and a discharging device, wherein the printing device includes a printing frame, a steel drum transport frame, a steel drum lifting frame and a steel drum printing mechanism, wherein: At least two pairs of support components with adjustable spacing are provided on the printing machine frame along the conveying direction of the steel drum, and a plurality of groups of support positioning units are provided on the support components along the conveying direction of the steel drum; The steel barrel transport frame is adapted to the support assembly, the steel barrel transport frame is installed on the adapted support assembly, a plurality of transport positioning units are provided on the steel barrel transport frame along the conveying direction of the steel barrel, and the steel barrel transport frame moves relative to the support assembly in the vertical direction through the vertical transport driving unit, and the steel barrel transport frame moves relative to the support assembly in the horizontal direction through the horizontal transport driving unit; The steel barrel lifting frame is located between two pairs of the supporting assemblies. The steel barrel lifting frame is provided with a pair of lifting assemblies that adjust the spacing synchronously with each pair of the supporting assemblies. The lifting assembly is provided with a lifting positioning unit. The steel barrel lifting frame moves relative to the supporting assemblies in the vertical direction through the vertical lifting unit.

2. According to claim 1, a flexible fully automatic steel drum screen printing production line is characterized by: Each pair of the supporting and positioning units comprises a first supporting member and a second supporting member, wherein: The first support member and the second support member are both slidably matched with the support assembly along the conveying direction of the steel barrel, and the first support member and the second support member are adjusted in the conveying direction of the steel barrel by a support distance adjustment assembly.

3. The flexible fully automatic steel drum screen printing production line according to claim 2 is characterized by: The support distance adjustment assembly comprises a first support distance adjustment rod and a second support distance adjustment rod, wherein: The first support distance adjustment rod and the second support distance adjustment rod are movably connected to the support assembly, and the length direction of the first support distance adjustment rod and the second support distance adjustment rod is consistent with the conveying direction of the steel drum, the first support members are all installed on the first support distance adjustment rod, and the second support members are all installed on the second support distance adjustment rod.

4. The flexible fully automatic steel drum screen printing production line according to claim 1 is characterized by: The steel barrel transport racks are provided with two groups, the steel barrel lifting rack is located between the two groups of the steel barrel transport racks, and each group of the steel barrel transport racks is installed on the corresponding supporting assembly.

5. The flexible fully automatic steel drum screen printing production line according to claim 3 is characterized by: The lifting and positioning unit includes a first lifting support member and a second lifting support member, and the first lifting support member and the second lifting support member adjust the spacing in the conveying direction of the steel barrel through a lifting spacing adjustment component, and the lifting spacing adjustment component includes a first lifting distance adjustment rod and a second lifting distance adjustment rod, the first lifting distance adjustment rod is detachably connected to the first support distance adjustment rod through a first connecting member, and the second lifting distance adjustment rod is detachably connected to the second support distance adjustment rod through a second connecting member.

6. The flexible fully automatic steel drum screen printing production line according to claim 5 is characterized by: The steel drum printing mechanism comprises a printing support frame, a screen printing template and an ink scraping assembly, wherein: The printing support frame is installed on the top of the printing frame, and the printing support frame moves relative to the printing frame along the conveying direction of the steel drum through the printing drive unit; The screen printing template is installed on the printing support frame through a template installation component, and the length direction of the screen printing template is consistent with the conveying direction of the steel drum; The ink scraping assembly is mounted on the printing machine frame and contacts the top of the screen printing template.

7. The flexible fully automatic steel drum screen printing production line according to claim 6 is characterized by: The template installation assembly includes a template installation frame and a template locking assembly, wherein: The template mounting frame is mounted on the printing support frame and is slidably matched with the printing support frame along the conveying direction of the steel drum through the mounting driving unit; The template locking components are provided in multiple groups, each group of the template locking components is adapted to the screen printing template, and each group of the template locking components is provided with two, the two template locking components are respectively mounted on the printing support frame and the template mounting frame, and the screen printing template is mounted on the printing support frame and the template mounting frame through the template locking components.

8. The flexible fully automatic steel drum screen printing production line according to claim 6 is characterized by: The ink scraping assembly includes an ink scraping frame, an ink scraping adjustment block, an ink applying scraper and an ink returning scraper, wherein: The ink scraper frame is installed on the printing machine frame; The ink scraping adjustment block is slidably mounted on the ink scraping frame, and is moved in a direction perpendicular to the conveying direction of the steel drum through an ink scraping sliding driving unit. There are multiple ink scraping adjustment blocks, and multiple screen printing templates correspond to the ink scraping adjustment blocks one by one. The inking scraper is mounted on the ink scraping adjustment block, and the inking scraper moves relative to the ink scraping frame in the vertical direction through the inking driving unit; the ink return scraper is mounted on the ink scraping adjustment block, and the ink return scraper moves relative to the ink scraping frame in the vertical direction through the ink return driving unit.

9. The flexible fully automatic steel drum screen printing production line according to claim 1 is characterized by: The feeding device includes a vertical barrel conveying mechanism and a flipping mechanism, wherein the flipping mechanism is located near the printing device, and the conveying mechanism includes a conveying frame, a conveying roller group, a centering component and a conveying rhythm control component, wherein: The conveying roller is assembled on the conveying frame; The centering assembly includes a centering guide frame and a centering guide wheel; The delivery rhythm control assembly includes a first blocking portion and a second blocking portion.

10. The flexible fully automatic steel drum screen printing production line according to claim 9, characterized in that: The flip mechanism includes a fixed frame, a transfer platform, a flip bracket, and a flip blocking frame, wherein: The fixed frame is located between the conveying frame and the printing device, and the fixed frame is fixed on the ground; The transfer platform is installed on the top of the fixed frame, and the transfer platform and the fixed frame are slidably matched. The transfer platform moves relative to the fixed frame in a direction perpendicular to the conveying direction of the steel drum through a sliding drive unit; The overturning bracket comprises a first overturning frame and a second overturning frame, and the second overturning frame is provided with a conveying assembly.

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