Flexible steel drum conveying device

Abstract

The invention relates to the technical field of steel drum printing and conveying, and discloses a flexible steel drum conveying device which comprises a printing rack, a steel drum carrying rack and a carrying positioning unit, and a plurality of supporting positioning units are arranged on the printing rack in the steel drum conveying direction; the steel drum carrying frames are arranged on the printing rack, the number of the steel drum carrying frames is at least one pair, and the distance between each pair of steel drum carrying frames is adjustable. The steel drum carrying frame moves relative to the printing rack in the vertical direction through the vertical carrying driving unit and moves relative to the printing rack in the horizontal direction through the horizontal carrying driving unit. The carrying and positioning units are arranged on the steel drum carrying frame, and the multiple carrying and positioning units are arranged in the steel drum conveying direction. The steel drum carrying device has the effect of reducing the possibility of rotation of the steel drum in the carrying process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel drum printing and conveying, and particularly relates to a flexible steel drum conveying device. BACKGROUND

[0002] Steel drums, as a kind of container made of steel, are well-known for their excellent performance and wide application fields.

[0003] Before the steel drums are put into use, ink printing is usually needed on the outer walls of the steel drums. This process usually involves using a conveying device to move the steel drums to be printed to a printing device, and then using the conveying device again to send the printed steel drums to a unloading area after the printing is completed.

[0004] However, in the traditional conveying process, the steel drums are placed transversely on the conveying belt and moved by the conveying belt. When the steel drums move on the conveying belt, the steel drums are prone to relative rotation with the conveying belt. In this relative rotation, the ink on the printed steel drums may come into contact with the conveying belt, causing the ink to be contaminated on the conveying belt, thereby affecting the quality of the ink printing of the steel drums. SUMMARY

[0005] In order to reduce the possibility of rotation of the steel drums during handling, the present application provides a flexible steel drum conveying device.

[0006] The flexible steel drum conveying device provided by the present application adopts the following technical scheme:

[0007] A flexible steel drum conveying device, comprising a printing machine frame, a steel drum handling frame and a handling positioning unit, wherein:

[0008] A plurality of support positioning units are arranged on the printing machine frame along the steel drum conveying direction;

[0009] The steel drum handling frame is arranged on the printing machine frame, and at least one pair of steel drum handling frames is arranged, and the spacing between each pair of steel drum handling frames is adjustable;

[0010] The steel drum handling frame is relatively moved with the printing machine frame in the vertical direction through a vertical direction handling driving unit, and is relatively moved with the printing machine frame in the horizontal direction through a horizontal direction handling driving unit;

[0011] The handling positioning unit is arranged on the steel drum handling frame and a plurality of handling positioning units are arranged along the steel drum conveying direction.

[0012] Optionally, the vertical direction handling driving unit comprises a guide rail frame and an extension driving rod, wherein:

[0013] The guide rail frame is arranged on the steel drum handling frame, and the extension driving rod is arranged on the guide rail frame.

[0014] The rail frame length direction is consistent with the steel drum conveying direction;

[0015] The telescopic driving rod is vertically arranged on the printing frame, and the push rod end of the telescopic driving rod is arranged on the rail frame.

[0016] Optionally, the rail frame is provided with a linkage assembly, the linkage assembly comprises a linkage frame, a linkage rack, a linkage tooth and a transmission rod, wherein:

[0017] The linkage frame is arranged on the printing frame, and a plurality of linkage frames are arranged along the printing frame;

[0018] The linkage rack is matched with the linkage frames, and the linkage rack and the linkage frames are vertically slidingly matched, and the linkage rack is arranged on the rail frame;

[0019] The linkage tooth is arranged on the linkage frame, and the linkage tooth and the linkage frame are rotationally matched, the linkage tooth is matched with a plurality of linkage racks, and the linkage tooth is engaged with the linkage rack;

[0020] The transmission rod coaxially penetrates through a plurality of linkage teeth and is fixed with the linkage teeth.

[0021] Optionally, the horizontal direction carrying driving unit is a magnetic couple type linear motion actuator, the magnetic couple type linear motion actuator is arranged on the rail frame, and the slider of the magnetic couple type linear motion actuator is fixed with the steel drum carrying frame.

[0022] Optionally, the carrying positioning unit is provided with a positioning groove at the top.

[0023] Optionally, the linkage frame is provided with a guide cylinder, and the linkage rack is arranged in the guide cylinder and is slidingly matched with the guide cylinder.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] 1. In the printing device, the steel drum is first placed on the support positioning unit of the support assembly. Then, the steel drum carrying frame is precisely vertically and horizontally carried along the steel drum conveying direction between the support positioning units by the cooperation of the vertical direction carrying driving unit and the horizontal direction carrying driving unit. During the carrying process, the steel drum carrying frame cooperates with the end of the steel drum by using the V-shaped groove on the carrying positioning unit, so as to ensure the stable conveying of the steel drum. After the printing is completed, the steel drum lifting frame resets the steel drum, and then the steel drum carrying frame carries the printed steel drum to the discharging device for discharging, so as to reduce the convenience of the steel drum in the carrying process, and also reduce the possibility of rotation of the steel drum in the carrying process. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0027] Figure 2 is a schematic diagram of the relative positions of the vertical barrel conveying mechanism and the overturning mechanism in an embodiment of the present application.

[0028] Figure 3 is a schematic diagram of the structure of the vertical barrel conveying mechanism in an embodiment of the present application.

[0029] Figure 4 is a schematic diagram of the relative positions of the first blocking part and the second blocking part in an embodiment of the present application.

[0030] Figure 5 is a schematic diagram of the structure of the overturning mechanism in an embodiment of the present application.

[0031] Figure 6 is a schematic diagram of the relative positions of the steel barrel carrying frame and the steel barrel lifting frame in an embodiment of the present application.

[0032] Figure 7 is a schematic diagram of the relative positions of the first overturning frame and the second overturning frame in an embodiment of the present application.

[0033] Figure 8 is a schematic diagram of the structure of the steel barrel carrying frame in an embodiment of the present application. Figure 7 is an enlarged schematic diagram of part A in

[0034] Figure 9 is a schematic diagram of the structure of the steel barrel lifting assembly in an embodiment of the present application. Figure 7 is an enlarged schematic diagram of part B in

[0035] Figure 10 is an enlarged schematic diagram of part C in Figure 7

[0036] Figure 11 is a schematic diagram of the structure of the steel barrel lifting assembly in an embodiment of the present application.

[0037] Figure 12 is a schematic diagram of the relative positions of the steel barrel lifting assembly and the steel barrel printing mechanism in an embodiment of the present application.

[0038] Figure 13 is an enlarged schematic diagram of part D in Figure 12

[0039] Figure 14 is a schematic diagram of the structure of the ink scraping assembly in an embodiment of the present application.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] ​​1. feeding device; 11. vertical barrel conveying mechanism; 111. conveying frame; 112. conveying roller set; 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. overturning mechanism; 121. fixing frame; 122. transfer platform; 123. overturning support; 1231. first overturning frame;

[0042] 1232, second turnover frame; 1233, conveying assembly; 12331, reference conveying part; 123311, reference frame; 123312, conveying belt; 12332, adjusting conveying part; 123321, adjusting plate; 12333, tensioning part; 12334, conveying power source; 123341, conveying plate; 123342, conveying rod; 123333, conveying wheel; 123344, conveying motor; 12335, adjusting conveying part power source; 124, turnover blocking frame; 125, transfer platform power source; 126, turnover support power source; 1261, turnover rack; 1262, turnover positioning frame; 1263, turnover gear ring; 1264, turnover cylinder; 2, printing device; 21, printing frame; 211, support assembly; 212, support positioning unit; 2121, first support piece; 2122, second support piece; 2123, support distance adjusting assembly; 21231, first support distance adjusting rod; 21232, second support distance adjusting rod; 21233, second locking assembly; 213, weld seam detection assembly; 2131, detection frame; 2132, rebound type probe unit; 2133, displacement detection unit; 214, steel drum rotation adjusting assembly; 2141, rotation rod; 2142, rotation adjusting motor; 22, steel drum carrying frame; 221, carrying positioning unit; 2211, positioning groove; 222, vertical direction carrying driving unit; 2221, guide rail frame; 2222, telescopic driving rod; 2223, linkage assembly; 22231, linkage frame; 22232, linkage rack; 22233, linkage tooth; 22234, transmission rod; 223, horizontal direction carrying driving unit; 23, steel drum lifting frame; 231, lifting assembly; 2311, limiting unit; 2312, first locking piece; 2313, lock catch; 232, lifting positioning unit; 2321, first lifting support piece; 2322, second lifting support piece; 2323, lifting interval adjusting assembly; 233, vertical direction lifting unit; 24, steel drum printing mechanism; 241, printing support frame; 2411, printing driving unit; 24111, printing driving rack; 24112, printing motor; 242, screen printing template; 243, ink scraping assembly; 2431, ink scraping frame; 2432, ink scraping adjusting block; 2433, ink applying doctor blade; 2434, ink returning doctor blade; 244, template mounting assembly; 2441, template mounting frame; 2442, template locking assembly; 2443, mounting driving unit; 2444, position adjusting unit; 24441, coarse adjustment driving unit; 24442, fine adjustment driving unit; 3, discharging device. DETAILED DESCRIPTION

[0043] The above description is made in connection with the accompanying drawings. Figures 1-14 The application is further described in detail.

[0044] The embodiment of the application discloses a flexible full-automatic steel drum screen printing production line.

[0045] The flexible full-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 are similar in structure.

[0046] When printing the outer wall of the steel drum, the steel drum is placed on the feeding device 1, conveyed to the printing device 2 for printing, and after the printing is completed, the printed steel drum is conveyed to the unloading area through the discharging device 3.

[0047] The feeding device 1, the printing device 2 and the discharging device 3 can be self-adaptively adjusted according to the length and diameter of the steel drum, so that the outer wall of the steel drum of various sizes can be printed by one device, the printing cost of the steel drum of different sizes is reduced, and meanwhile, the space occupied by the steel drum printing device is reduced.

[0048] The feeding device 1 comprises a vertical drum conveying mechanism 11 and a turnover mechanism 12, and the turnover mechanism 12 is located close to the printing device 2. The vertically placed steel drum is conveyed to the turnover mechanism 12 through the vertical drum conveying mechanism 11 and turned into a horizontally placed state, so as to facilitate the subsequent printing and conveying of the steel drum.

[0049] The vertical drum conveying mechanism 11 comprises a conveying frame 111, a conveying roller group 112, a centering assembly 113 and a conveying rhythm control assembly 115.

[0050] The conveying frame 111 is placed on the ground, the conveying roller group 112 is arranged on the conveying frame 111, the conveying roller group 112 comprises a plurality of conveying rollers, the plurality of conveying rollers are distributed along the length direction of the conveying frame 111, the plurality of conveying rollers are parallel to each other and are in rotating cooperation with the conveying frame 111, and the conveying rollers rotate through a conveying roller power source.

[0051] The conveying roller power source comprises a conveying roller motor and a conveying chain. The conveying roller motor is fixed on the conveying frame 111, the conveying chain is arranged between adjacent two conveying rollers, and the conveying roller motor drives the conveying rollers in the conveying roller group 112 to rotate synchronously through the conveying chain.

[0052] When conveying the vertically placed steel drum, the steel drum is vertically placed on the conveying roller group 112 and moved by the conveying roller group 112. When conveying the steel drum, the vertically placed steel drum is less likely to be stuck between adjacent two conveying rollers than the horizontally placed steel drum, and is more stable in the conveying process.

[0053] The centering assembly 113 includes a pair of centering guides 1131, both of which are arranged on the conveying frame 111 and distributed on both sides of the conveying frame 111. The length direction of the centering guides 1131 is consistent with the conveying direction of the steel drum, and both of the centering guides 1131 are driven by a centering guide power source to move towards or away from each other synchronously.

[0054] When the vertically placed steel drum is conveyed, the centering guide power source drives both of the centering guides 1131 to move towards each other, so that both of the centering guides 1131 clamp the vertically placed steel drum, thereby realizing the centering of the steel drum. Meanwhile, during the conveying of the vertically placed steel drum, both of the centering guides 1131 protect the steel drum, thereby reducing the possibility of the steel drum falling or tumbling during the conveying.

[0055] The centering guide power source includes a centering guide rail bracket 2221, a centering threaded rod and a centering motor.

[0056] The centering guide rail bracket 2221 is fixedly installed on the conveying frame 111, and the length direction of the centering guide rail bracket 2221 is consistent with the length direction of the conveying roller. The centering guide rail bracket 2221 is located below the conveying roller group 112.

[0057] Two centering sliding blocks are arranged on the centering guide rail bracket 2221, and the centering sliding blocks are slidably connected with the centering guide rail bracket 2221 along the length direction of the centering guide rail bracket 2221. The centering guide 1131 and the centering sliding block are one-to-one corresponding, and the centering guide 1131 is fixed on the corresponding centering sliding block.

[0058] The centering threaded rod is arranged on the centering guide rail bracket 2221, and the length direction of the centering threaded rod is consistent with the length direction of the centering guide rail bracket 2221. The centering threaded rod is rotatably connected with the centering guide rail bracket 2221. The centering threaded rod penetrates through the two centering sliding blocks and is threadedly connected with the two centering sliding blocks. The centering threaded rod is provided with two threads with opposite rotation directions, and the two centering sliding blocks and the two threads are one-to-one corresponding. The centering sliding block is located at the corresponding thread.

[0059] The centering motor is drivingly connected with the centering threaded rod. During the rotation of the centering threaded rod, the centering threaded rod drives both of the centering guide rail brackets 2221 to move towards or away from each other synchronously.

[0060] Since the conveying frame 111 is relatively long, a plurality of centering assemblies 113 can be arranged along the length direction of the conveying frame 111. In order to ensure the working stability of the centering guide 1131, a plurality of centering guide power sources can also be arranged on the conveying frame 111 along the length direction of the conveying frame 111.

[0061] In order to reduce the friction between the centering guide 1131 and the vertical steel drum, a plurality of centering guide wheels 1133 are arranged on one side of each of the two centering guides 1131 along the length direction of the centering guide 1131, each of the centering guide wheels 1133 is in rotationally fitted with the centering guide 1131, and each of the centering guide wheels 1133 is in rolling fitted with the outer wall of the vertical steel drum.

[0062] The conveying rhythm control assembly 115 comprises a first blocking part 1151 and a second blocking part 1152.

[0063] The first blocking part 1151 and the second blocking part 1152 are arranged along the length direction of the conveying frame 111, and a conveying area is formed between the first blocking part 1151 and the feeding end of the conveying frame 111, and a waiting area is formed between the first blocking part 1151 and the second blocking part 1152.

[0064] The first blocking part 1151 releases one steel drum into the waiting area, and after the steel drum in the waiting area is released by the second blocking part 1152 and moves out, the next steel drum is released by the first blocking part 1151, so as to control the conveying rhythm of the steel drum.

[0065] When the first blocking part 1151 blocks the vertical steel drum, the steel drum is in a stationary state, and when the emergency stop occurs, the possibility of the steel drum being dumped due to inertia is reduced, and the risk of accidents is reduced.

[0066] The first blocking part 1151 comprises a pair of blocking rods, the top of the blocking rod passes through the adjacent two conveying rollers of the conveying roller group 112, and the two blocking rods are close to or away from each other through a blocking rod power source. When the steel drum is released, the blocking rod power source makes the two blocking rods away from each other, and when the steel drum needs to be blocked, the blocking rod power source makes the two blocking rods close to each other.

[0067] 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 in rotationally fitted with the blocking rod, and the outer wall of the blocking cylinder is in rolling fitted with the outer wall of the steel drum.

[0068] In the embodiment of the present application, the blocking rod power source is similar in structure to the centering guide 1131 power source.

[0069] The second blocking part 1152 is arranged at a position close to the discharging end of the conveying frame 111, and in the embodiment of the present application, the second blocking part 1152 is a blocking cylinder.

[0070] After the turnover mechanism 12 is emptied, the second blocking part 1152 releases the steel drum, the overall length of the blocking cylinder is changed, the top of the blocking cylinder is lower than the top of the conveying roller group 112, and the steel drum is released, so as to further control the conveying rhythm of the steel drum.

[0071] The turnover mechanism 12 comprises a fixing frame 114, a transfer platform 121, a turnover support 122 and a turnover blocking frame 123.

[0072] The fixing frame 114 is located between the conveying frame 111 and the printing device 2, and is placed on the ground. The transfer platform 121 is located on the top of the fixing 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 is relatively moved along the length direction of the transfer platform 121 by a power source of the transfer platform 121 and the fixing frame 114.

[0073] In the embodiment of the present application, the power source of the transfer platform 121 is a screw block mechanism, and the sliding block of the screw block mechanism is fixedly connected with the transfer platform 121.

[0074] The turnover support 122 is installed on the transfer platform 121 and is relatively rotated with the transfer platform 121 by a power source of the turnover support 122. The turnover blocking frame 123 is installed on the transfer platform 121 and is located close to the turnover support 122.

[0075] The steel drum released by the second blocking part 1152 is conveyed to the turnover support 122, and the vertically placed steel drum on the turnover support 122 is positioned by the turnover blocking frame 123. Then, the vertically placed steel drum is turned over to be horizontally placed by the turnover support 122, so as to be conveyed to the printing device 2 in the subsequent process and the outer wall of the steel drum is printed. In the process of turning over the steel drum, the turnover blocking frame 123 gradually releases the positioning of the steel drum.

[0076] Before the turnover support 122 turns over the steel drum, the transfer platform 121 drives the turnover support 122 to move, so that the feeding end of the turnover support 122 is aligned with the discharging end of the conveying frame 111. After the turnover support 122 turns over the steel drum, the transfer platform 121 drives the turnover support 122 to move again, so that the discharging end of the turnover support 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.

[0077] The turnover support 122 comprises a first turnover frame 1221 and a second turnover frame 1222, and the turnover support 122 is arranged in an L shape as a whole. The conveying assembly 1223 is arranged on the second turnover frame 1222.

[0078] When the turnover support 122 is in the initial state, the first turnover frame 1221 is arranged horizontally, and the second turnover frame 1222 is arranged vertically.

[0079] After the second blocking part 1152 is released, the vertically placed steel drum is placed vertically on the first turnover frame 1221 under the action of inertia, and is in contact with the turnover blocking frame 123. The vertically placed steel drum is positioned and blocked by the turnover blocking frame 123.

[0080] Then, the power source of the turnover support 122 drives the turnover support 122 as a whole to carry the steel drum to overturn to a horizontal state, and after the discharge end of the turnover support 122 is aligned with the feeding end of the printing device 2, the horizontal steel drum is conveyed into the printing device 2 through the conveying assembly 1223.

[0081] When the steel drum is placed on the first turnover frame 1221, in order to reduce the friction between the first turnover frame 1221 and the steel drum, a plurality of rotating rollers are arranged on the first turnover frame 1221, the rotating rollers are distributed along the conveying direction of the steel drum, each rotating roller is in rotating cooperation with the first turnover frame 1221, and the length direction of each rotating roller is perpendicular to the conveying direction of the steel drum.

[0082] The rotating rollers and the steel drum are in rolling cooperation, so as to reduce the moving friction of the steel drum on the first turnover frame 1221, and facilitate the contact between the steel drum and the turnover blocking frame 123.

[0083] The turnover blocking frame 123 is fixedly installed on the transfer platform 121, and the turnover blocking frame 123 is in a plate shape, and the conveying direction of the steel drum is perpendicular to the plate surface of the turnover blocking frame 123.

[0084] When the first turnover frame 1221 is in a horizontal state, the turnover blocking frame 123 passes out between the adjacent two rotating rollers, so as to block and position the steel drum on the first turnover frame 1221. After the first turnover frame 1221 is overturned to a vertical state, the turnover blocking frame 123 is separated from the first turnover frame 1221, so as to release the limiting of the steel drum on the first turnover frame 1221.

[0085] The power source of the turnover support 122 includes a turnover rack 1251, a turnover positioning frame 1252, a turnover gear ring 1253 and a turnover cylinder 1254. The turnover rack 1251 is located on the top of the transfer platform 121, the length direction of the turnover rack 1251 is consistent with the moving direction of the transfer platform 121, and the turnover rack 1251 is in sliding cooperation with the transfer platform 121.

[0086] The turnover positioning frame 1252 is fixed on the transfer platform 121, one side of the turnover gear ring 1253 is fixed at the joint of the first turnover frame 1221 and the second turnover frame 1222, the other side of the turnover gear ring 1253 is in rotating cooperation with the turnover positioning frame 1252, and the turnover gear ring 1253 is engaged with the turnover rack 1251. The turnover cylinder 1254 is fixed on the transfer platform 121, and the push rod of the turnover cylinder 1254 is in transmission cooperation with the turnover rack 1251.

[0087] The turnover cylinder 1254 drives the turnover rack 1251 to move on the transfer platform 121, and in the moving process of the turnover rack 1251, the turnover rack 1251 drives the turnover support 122 to overturn through the turnover gear ring 1253.

[0088] In order to improve the stability of the turnover support 122 at the end of the turnover process, the buffer assembly is arranged at the end position of the transfer platform 121 close to the turnover rack 1251. In the embodiment of the present application, the buffer assembly is a hydraulic buffer.

[0089] At the end of the turnover process of the turnover support 122, the hydraulic buffer contacts the turnover rack 1251, so as to slow down the movement speed of the turnover rack 1251, and further slow down the turnover speed of the turnover support 122, thereby reducing the possibility of collision and damage between the turnover support 122 and the transfer platform 121 due to the too fast turnover speed of the turnover support 122 at the end of the turnover process, and further improving the stability of the steel drum in the turnover process.

[0090] The conveying assembly 1223 includes a reference conveying part 12231 and an adjusting conveying part 12232. The reference conveying part 12231 and the adjusting conveying part 12232 are synchronously driven by a conveying power source 12234. The reference conveying part 12231 and the adjusting conveying part 12232 are both installed on the second turnover frame 1222, and the adjusting conveying part 12232 moves along the direction close to or away from the reference conveying part 12231 through the adjusting conveying part 12232 power source and the second turnover frame 1222.

[0091] The distance 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 turnover frame 1222 is in a horizontal state, the reference conveying part 12231 and the adjusting conveying part 12232 cooperate to support the horizontally placed steel drum, and cooperate to convey the steel drum into the printing assembly.

[0092] The reference conveying part 12231 includes a reference frame 122311 and a conveying belt 122312.

[0093] The reference frame 122311 is fixedly installed on the second turnover frame 1222, and the conveying belt 122312 is located on the reference frame 122311. The conveying belt 122312 is driven to move by the conveying belt 122312 power source, and the reference frame 122311 supports the conveying belt 122312 during the working process of the conveying belt 122312. The horizontally placed steel drum is placed on the conveying belt 122312, and the conveying belt 122312 drives the steel drum to move.

[0094] In order to further improve the stability of the conveying belt 122312 during the working process, a tensioning part 12233 is arranged near the conveying belt 122312 to change the tension of the conveying belt 122312. The tensioning part 12233 comprises a tensioning rod and a tensioning wheel. The tensioning rod is installed on the second turnover frame 1222, and the tensioning wheel is arranged on the tensioning rod and rotationally matched with the tensioning rod. The tensioning wheel is rolling matched with the conveying belt 122312. 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 nuts and the tensioning rod, and the tension of the conveying belt 122312 is adjusted by clamping the second turnover frame 1222 by the adjacent two tensioning nuts.

[0095] The tensioning wheel is provided with a tensioning groove, and the conveying belt 122312 is arranged in the tensioning groove. During the working process of the conveying belt 122312, the groove wall of the tensioning groove guides and limits the conveying belt 122312.

[0096] 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 further comprises an adjusting plate 122321. The adjusting plate 122321 is fixedly installed on the reference frame 122311 of the adjusting conveying part 12232. The adjusting plate 122321 is parallel to the first turnover frame 1221, and the adjusting plate 122321 and the first turnover frame 1221 cooperatively clamp the two ends of the steel drum.

[0097] In the embodiment of the present application, the power source of the adjusting conveying part 12232 is a screw block mechanism, and the slider of the screw block mechanism is fixedly connected with 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 block mechanism, so as to adjust the distance between the reference conveying part 12231 and the adjusting conveying part 12232, thereby adapting to steel drums of different lengths.

[0098] The conveying power source 12234 comprises 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 in the conveying direction of the steel drum.

[0099] Each group of the conveying plate 122341 comprises a pair of the conveying plates 122341. The two conveying plates 122341 of each pair of the conveying plates 122341 are fixedly installed at positions close to and away from the first turnover frame 1221 of the second turnover frame 1222.

[0100] The conveying rod 122342 is provided with two, and the two conveying rods 122342 and the two groups of conveying plates 122341 correspond to each other, each conveying rod 122342 penetrates a pair of conveying plates 122341 of each group of conveying plates 122341, and the conveying rod 122342 and the conveying plate 122341 are rotationally matched.

[0101] Each group of conveying wheels 122343 includes two conveying wheels 122343, one conveying wheel 122343 is located near the position of the conveying belt 122312 of the reference conveying part 12231 and is drivingly matched with the conveying belt 122312 of the reference conveying part 12231, and the other conveying wheel 122343 is located near the position of the adjusting conveying part 12232 and is drivingly matched with the conveying belt 122312 of the adjusting conveying part 12232.

[0102] In order to facilitate the synchronous movement of the adjusting conveying part 12232 and the conveying wheel 122343, the conveying wheel 122343 near the adjusting conveying part 12232 is fixed on the reference frame 122311 of the adjusting conveying part 12232, the two conveying rods 122342 and the two groups of conveying wheels 122343 correspond to each other, and the conveying rod 122342 penetrates each corresponding group of conveying wheels 122343.

[0103] The conveying motor 122344 is fixed on the second turnover frame 1222, and the conveying motor 122344 is drivingly matched with the conveying rod 122342. In order to facilitate the rotation of the conveying rod 122342 to drive the conveying wheel 122343, each conveying rod 122342 includes an integral circular rod and a polygonal rod, the circular rod and the polygonal rod are coaxial, the circular rod is provided with two, and the two circular rods are located at two ends of the polygonal rod, the circular rod and the conveying plate 122341 are rotationally matched, the conveying wheel 122343 is provided with a polygonal hole corresponding to the polygonal rod, and the polygonal rod and the polygonal hole are insertedly matched.

[0104] When the steel drum is vertically placed on the first turnover frame 1221, the adjusting plate 122321 is moved towards the top of the steel drum, and the steel drum is clamped by the mutual cooperation of the adjusting plate 122321 and the first turnover frame 1221.

[0105] After the turnover support 122 turns the vertically placed steel drum into a horizontally placed state, the two conveying belts 122312 support the two ends of the horizontally placed steel drum and convey the steel drum into the printing device 2.

[0106] The feeding device 1 and the discharging device 3 are similar in structure.

[0107] The printing device 2 includes a printing frame 21, a steel drum carrying frame 22, a steel drum lifting frame 23, and a steel drum printing mechanism 24.

[0108] 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.

[0109] The printing frame 21 is provided with two groups of adjustable spacing support assemblies 211 along the steel drum conveying direction, each group of adjustable spacing support assemblies 211 is provided with a pair of support assemblies 211, and each support assembly 211 is provided with a plurality of groups of support positioning units 212 along the steel drum conveying direction.

[0110] The steel drum carrying frame 22 is arranged 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 at the top of the printing frame 21 close to the steel drum lifting frame 23.

[0111] The feeding device 1 conveys the horizontally placed steel drum to the support positioning unit 212 on the support assembly 211, and supports the steel drum through the support positioning unit 212. Then, the steel drum on the support positioning unit 212 is placed on the support positioning unit 212 at different workstations along the steel drum conveying direction through the steel drum carrying frame 22, so as to convey the steel drum.

[0112] The steel drum carrying frame 22 carries the horizontally placed steel drum to the steel drum lifting frame 23, the steel drum lifting frame 23 lifts the steel drum to the position of the steel drum printing mechanism 24, after printing by the steel drum printing mechanism 24, the steel drum is reset by the steel drum lifting frame 23, and then the steel drum is carried to the discharging device 3 by the steel drum carrying frame 22 for discharging.

[0113] Each group of support assemblies 211 drives two support assemblies 211 in the same group to approach or move away synchronously through a synchronous screw rod mechanism, so as to adapt to steel drums of different lengths.

[0114] Each group of support positioning units 212 includes a first support 2121 and a second support 2122. In the embodiment of the application, the first support 2121 and the second support 2122 are support positioning wheels, the first support 2121 and the second support 2122 are distributed along the support assembly 211 in the steel drum conveying direction, and the first support 2121 and the second support 2122 are adjusted in the spacing in the steel drum conveying direction by a support distance adjusting assembly (2123), so as to adapt to different diameters of the steel drum.

[0115] The support distance adjusting assembly (2123) comprises a first support distance adjusting rod 21231 and a second support distance adjusting rod 21232. The first support distance adjusting rod 21231 and the second support distance adjusting rod 21232 are movably connected to the support assembly 211, and the length direction of the first support distance adjusting rod 21231 and the second support distance adjusting rod 21232 is consistent with the steel drum conveying direction. The first support member 2121 is arranged on the first support distance adjusting rod 21231, and the second support member 2122 is arranged on the second support distance adjusting rod 21232.

[0116] The steel drum lifting frame 23 is provided with a pair of lifting assemblies 231 with adjustable spacing. Each lifting assembly 231 is provided with a lifting positioning unit 232. The steel drum lifting frame 23 moves along the vertical direction relative to the support assembly 211 through a vertical direction lifting unit 233.

[0117] After the steel drum carrying frame 22 carries the steel drum to the lifting positioning unit 232 on the steel drum lifting frame 23, the steel drum is moved in the vertical direction through the vertical direction lifting unit 233. In the embodiment of the present application, the vertical direction lifting unit 233 is a lead screw module

[0118] The two lifting assemblies 231 and the two support assemblies 211 of each set of support assemblies 211 correspond to each other, and each lifting assembly 231 and the corresponding support assembly 211 are provided with a limiting unit 2311. Each limiting unit 2311 comprises two limiting plates, which are fixedly installed on the two sides of one end of the support assembly 211 close to the lifting assembly 231. The two limiting plates form a limiting area therebetween.

[0119] When the lifting assembly 231 is located in the limiting area, the two support assemblies 211 adjust the spacing, and the support assembly 211 drives the lifting assembly 231 to adjust the spacing synchronously through the limiting unit 2311. When the lifting assembly 231 moves in the vertical direction to move out of the limiting area, the limiting unit 2311 releases the limiting of the lifting assembly 231.

[0120] The steel drum lifting frame 23 is provided with two limiting rods, the length direction of the two limiting rods is perpendicular to the steel drum conveying direction, the two limiting rods are parallel to each other, and the limiting rods are slidably connected to the steel drum lifting frame 23 along the length direction thereof. The two lifting assemblies 231 correspond to the two limiting rods one by one, and the lifting assembly 231 is fixed on the corresponding limiting rod.

[0121] The two limiting rods are provided with a rack on one side close to each other along the length direction thereof. The first locking member 2312 is arranged between the two adjacent racks, and the first locking member 2312 is an electromagnetic tooth clutch.

[0122] When the lifting assembly 231 is separated from the limiting area, the first locking member 2312 fixes the distance between the two lifting assemblies 231 by locking the two limiting rods.

[0123] The lifting positioning unit 232 comprises a first lifting support 2321 and a second lifting support 2322, the first lifting support 2321 and the second lifting support 2322 adjust the spacing in the steel drum conveying direction through a lifting spacing adjustment assembly 2323, and the lifting spacing adjustment assembly 2323 comprises a first lifting distance adjustment rod and a second lifting distance adjustment rod, the first lifting distance adjustment rod is detachably connected with the first support distance adjustment rod 21231 through the lock 2313, and the second lifting distance adjustment rod is also detachably connected with the second support distance adjustment rod 21232 through the lock 2313.

[0124] The side of the first lifting distance adjustment rod and the second lifting distance adjustment rod close to each other is provided with a rack, and a driving motor is arranged between the racks of the first lifting distance adjustment rod and the second lifting distance adjustment rod, and a rotating tooth engaged with the two racks is arranged on the motor shaft of the driving motor.

[0125] The driving motor drives the first lifting distance adjustment rod and the second lifting distance adjustment rod to move relative to each other, and 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, so as to synchronously adjust the working range of the lifting positioning unit 232 and the support positioning unit 212.

[0126] The side of the first support distance adjustment rod 21231 and the second support distance adjustment rod 21232 close to each other is provided with a rack. A second locking member is arranged between the racks of the first support distance adjustment rod 21231 and the second support distance adjustment rod 21232, and the second locking member is also an electromagnetic gear clutch, so as to ensure that the distance between the first support 2121 and the second support 2122 in the same support positioning unit 212 is kept fixed for a long time.

[0127] The steel drum printing mechanism 24 comprises a printing support frame 241, a silk screen printing template 242 and an ink scraping assembly 243.

[0128] The printing support frame 241 is arranged on the top of the printing rack 21, and the printing support frame 241 moves relative to the printing rack 21 along the steel drum conveying direction through a printing driving unit 2411; the silk screen printing template 242 is arranged on the printing support frame 241 through a template mounting assembly 244, and the length direction of the silk screen printing template 242 is consistent with the steel drum conveying direction; and the ink scraping assembly 243 is arranged on the printing rack 21 and used for contacting the top of the silk screen printing template 242.

[0129] The template mounting assembly 244 comprises a template mounting frame 2441 and a template locking assembly 2442. The template mounting frame 2441 is arranged on the printing support frame 241 and is slidably connected to the printing support frame 241 along the steel drum conveying direction through a mounting driving unit 2443. The template locking assembly 2442 is provided in multiple groups. Each group of the template locking assembly 2442 is adapted to the screen printing template 242. Each group of the template locking assembly 2442 is provided with two template locking assemblies 2442. The two template locking assemblies 2442 are arranged on the printing support frame 241 and the template mounting frame 2441 respectively. The screen printing template 242 is arranged on the printing support frame 241 and the template mounting frame 2441 through the template locking assembly 2442.

[0130] The printing driving unit 2411 comprises a printing driving rack 24111 and a printing motor 24112. The printing driving rack 24111 is arranged on the printing support frame 241. The length direction of the printing driving rack 24111 is consistent with the steel drum conveying direction. A printing driving gear is arranged on the motor shaft of the printing motor 24112. The printing driving gear is engaged with the printing driving rack 24111. The printing motor 24112 drives the printing driving rack 24111 to move through the printing driving gear. In this way, the printing support frame 241 is moved.

[0131] When the screen printing template 242 is installed, the screen printing template 242 is located between the printing support frame 241 and the template mounting frame 2441. Then, the mounting driving unit 2443 moves the template mounting frame 2441 back and forth along the steel drum conveying direction. The two template locking assemblies 2442 clamp the screen printing template 242. In this way, the fixing of the screen printing template 242 is completed.

[0132] The multiple screen printing templates 242 facilitate the simultaneous spraying of different information on the outer wall of the steel drum. In order to facilitate the adaptation to the printing position of the steel drum, each group of the template locking assembly 2442 can slide relative to the printing support frame 241 and move relative to the printing support frame 241 along a direction perpendicular to the steel drum conveying direction through a position adjusting unit 2444.

[0133] The position adjusting unit 2444 comprises a coarse adjustment driving unit 24441 and a fine adjustment driving unit 24442. The coarse adjustment driving unit 24441 is a lead screw module. The lead screw module drives each group of the template locking assembly 2442 to move along a direction perpendicular to the steel drum conveying direction.

[0134] The two locking clamps in the same group of the template locking assembly 2442 are arranged on the printing support frame 241 and the template mounting frame 2441 respectively.

[0135] The fine adjustment driving unit 24442 comprises a locking frame and a connecting adjusting frame.

[0136] The connection adjusting frame is movably arranged on the locking frame and is capable of sliding with the locking frame in a direction perpendicular to the conveying direction of the steel drum. A connection bolt is threadedly connected to the connection adjusting frame, and the end of the connection bolt is in contact with the locking frame.

[0137] The distance between two adjacent screen printing templates 242 is adjusted by adjusting the position of the connection adjusting frame, so as to adjust the line distance of the steel drum spraying. After the adjustment of the connection adjusting frame is completed, the relative position of the connection adjusting frame and the locking frame is fixed by the connection bolt.

[0138] The side of the connection adjusting frame close to the screen printing template 242 is provided with an opening. The screen printing template 242 is inserted into the opening of the connection adjusting frame. A fastening bolt is threadedly connected to the connection 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 tightly pressed against the opening of the locking frame by the fastening bolt.

[0139] The ink scraping assembly 243 comprises an ink scraping frame 2431, ink scraping adjusting blocks 2432, an ink applying doctor blade 2433 and an ink returning doctor blade 2434. The ink scraping frame 2431 is arranged on the printing frame 21. The ink scraping adjusting blocks 2432 are movably arranged on the ink scraping frame 2431 and are capable of moving along a direction perpendicular to the conveying direction of the steel drum by an ink scraping sliding driving unit, so as to adapt to the position of the screen printing template 242. The ink scraping adjusting blocks 2432 are provided in plurality. The plurality of screen printing templates 242 correspond to the ink scraping adjusting blocks 2432 one by one. The ink applying doctor blade 2433 is arranged on the ink scraping adjusting block 2432 and is capable of moving relative to the ink applying frame in a vertical direction by an ink applying driving unit. The ink returning doctor blade 2434 is arranged on the ink scraping adjusting block 2432 and is capable of moving relative to the ink applying frame in a vertical direction by an ink returning driving unit.

[0140] After the steel drum conveying frame 23 conveys the steel drum to a position close to the screen printing template 242, the printing support frame 241 is moved along the conveying direction of the steel drum. The screen printing template 242 moves relative to the ink applying doctor blade 2433. The ink on the screen printing template 242 is scraped off by the ink applying doctor blade 2433 and falls on the steel drum. At the same time, the friction between the screen printing template 242 and the steel drum drives the steel drum to rotate, so that the ink is conveniently printed on the steel drum.

[0141] After the ink applying doctor blade 2433 reaches the end of the screen printing template 242, the ink applying doctor blade 2433 is lifted by the ink applying driving unit, the ink returning doctor blade 2434 is brought into contact with the screen printing template 242 by the ink returning driving unit, and the printing support frame 241 is reset. During the resetting of the printing support frame 241, the ink returning doctor blade 2434 scrapes the ink inside the screen printing template 242 to the initial position, so as to facilitate the ink to be scraped and applied to the steel drum again.

[0142] The ink applying driving unit and the ink returning driving unit are both air cylinders. Since the screen printing template 242 is prone to slight deformation during long-time operation, in order to facilitate the scraping of ink, the ink applying driving unit and the ink applying scraper 2433 are movably connected at the top, and the ink returning driving unit and the ink returning scraper 2434 are movably connected at the top, so as to increase the contact area of the bottom of the ink applying scraper 2433 and the bottom of the ink returning scraper 2434, and facilitate the application or returning of ink.

[0143] The steel drum carrying frame 22 is provided with at least one pair, and in the embodiment of the present application, the steel drum carrying frame 22 is provided with two pairs, each pair of the steel drum carrying frame 22 being matched with each pair of the support assembly 211, and the two steel drum carrying frames 22 and the two support assemblies 211 being one-to-one corresponding.

[0144] The steel drum carrying frame 22 moves relative to the printing frame 21 in the vertical direction through the vertical direction carrying driving unit 222, and moves relative to the printing frame 21 in the horizontal direction through the horizontal direction carrying driving unit 223. The carrying positioning unit 221 is arranged on the steel drum carrying frame 22 and is provided with a plurality of units along the steel drum conveying direction.

[0145] After the feeding device 1 places the steel drum on the support assembly 211, the steel drum carrying frame 22 moves upward under the driving of the vertical direction carrying driving unit 222, and lifts the steel drum placed on the support assembly 211 through the carrying positioning unit 221, then moves the steel drum carrying frame 22 along the steel drum conveying direction through the horizontal direction carrying driving unit 223, and then conveys the steel drum to above the next support positioning unit 212, and then moves the steel drum carrying frame 22 downward again through the vertical direction carrying driving unit 222, and places the steel drum on the carrying positioning unit 221 on the support positioning unit 212, so as to carry the steel drum in this way, which facilitates the control of the rhythm of carrying the steel drum, and reduces the possibility of rotation of the steel drum during the carrying process.

[0146] The vertical direction carrying driving unit 222 includes a guide rail frame 2221 and a telescopic driving rod 2222.

[0147] The guide rail frame 2221 is provided with at least one pair, the guide rail frame 2221 being matched with the steel drum carrying frame 22, and the steel drum carrying frame 22 being arranged on the guide rail frame 2221. The length direction of the guide rail frame 2221 is consistent with the steel drum conveying direction. The telescopic driving rod 2222 is vertically arranged on the printing frame 21, and the push rod end of the telescopic driving rod 2222 is arranged on the guide rail frame 2221. In the embodiment of the present application, the telescopic driving rod 2222 is an air cylinder.

[0148] When the steel drum carrier 22 needs to be moved in the vertical direction, the guide rail frame 2221 is pushed to move by the telescopic drive rod 2222, and the steel drum carrier 22 is moved in the vertical direction by the guide rail frame 2221.

[0149] Since the guide rail frame 2221 is long, in order to improve the working stability of the guide rail frame 2221, the linkage assembly 2223 is arranged on the guide rail frame 2221.

[0150] The linkage assembly 2223 comprises a linkage frame 22231, a plurality of linkage teeth 22232, a plurality of linkage gears 22233, and a transmission rod 22234.

[0151] The linkage frame 22231 is arranged on the printing machine frame 21, and a plurality of linkage frames 22231 are arranged on the printing machine frame 21. The plurality of linkage teeth 22232 are matched with the plurality of linkage frames 22231, and the plurality of linkage teeth 22232 are in sliding fit with the plurality of linkage frames 22231 in the vertical direction. The plurality of linkage teeth 22232 are arranged on the guide rail frame 2221. The plurality of linkage gears 22233 are arranged on the linkage frame 22231, and the plurality of linkage gears 22233 are in rotational fit with the linkage frame 22231. The plurality of linkage gears 22233 are matched with the plurality of linkage teeth 22232, and the plurality of linkage gears 22233 are in meshing engagement with the plurality of linkage teeth 22232. The transmission rod 22234 is coaxially arranged through the plurality of linkage gears 22233 and is fixed with the plurality of linkage gears 22233.

[0152] When the guide rail frame 2221 moves in the vertical direction, the guide rail frame 2221 drives the plurality of linkage teeth 22232 to move in the vertical direction synchronously. Since the plurality of linkage teeth 22232 are in meshing engagement with the plurality of linkage gears 22233, the plurality of linkage teeth 22232 drive the plurality of linkage gears 22233 to rotate in the vertical direction during the movement of the plurality of linkage teeth 22232. Since the plurality of linkage gears 22233 are fixedly connected with the transmission rod 22234, the plurality of linkage teeth 22232 are facilitated to move synchronously, and the working stability of the guide rail frame 2221 is improved.

[0153] The linkage frame 22231 is provided with a guide cylinder, and the plurality of linkage teeth 22232 are arranged in the guide cylinder and are in sliding fit with the guide cylinder. During the movement of the plurality of linkage teeth 22232, the guide cylinder guides the plurality of linkage teeth 22232, and the working stability of the plurality of linkage teeth 22232 is improved.

[0154] The horizontal direction carrying drive unit 223 is a magnetic coupling type linear motion actuator, the magnetic coupling type linear motion actuator is arranged on the guide rail frame 2221, and a slider of the magnetic coupling type linear motion actuator is fixed with the steel drum carrier 22. In the embodiment of the present application, the magnetic coupling type linear motion actuator is a magnetic coupling type rodless cylinder.

[0155] In the embodiment of the present application, the carrying and positioning unit 221 is arranged in a plate shape, and is provided with a groove arranged in a V shape, and the end of the steel drum is placed in the groove.

[0156] In order to facilitate the placement of the steel drum of the feeding device 1 on the steel drum carrying frame 22, the initial support frame is fixedly installed at one end of the support assembly 211 close to the feeding device 1, and the initial support frame is arranged in a V shape as a whole, so as to facilitate the steel drum at the feeding device 1 to roll into the initial support frame.

[0157] Similarly, in order to facilitate the conveying of the steel drum into the discharging device 3, the terminal flow guide plate is fixedly installed at the position of the support assembly 211 close to the discharging device 3, and the top of the terminal flow guide plate is inclined downward at one end close to the discharging device 3.

[0158] 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.

[0159] The printing frame 21 is provided with a weld detection assembly 213 and a steel drum rotation adjustment assembly 214 at the position close to the turnover assembly.

[0160] The weld detection assembly 213 comprises a detection frame 2131, a rebound probe unit 2132 and a displacement detection unit 2133.

[0161] The detection frame 2131 is fixedly installed on the printing frame 21, and a detection box is fixedly installed on the detection frame 2131. The rebound probe unit 2132 comprises a probe and a spring, the probe is vertically installed on the detection box, and the probe is in sliding fit with the detection box in the vertical direction, the top of the probe is in contact with the outer wall of the steel drum, and a limiting ring is arranged on the probe.

[0162] The displacement detection unit 2133 is installed inside the detection box, the spring is sleeved on the probe, one end of the spring is in contact with the limiting ring, and the other end of the spring is in contact with the displacement detection unit 2133. In the embodiment of the present application, the displacement detection unit 2133 is a pressure sensor.

[0163] When the weld of the steel drum is detected, the steel drum is rotated, and in the rotation process of the steel drum, the top end of the probe is in real-time contact with the steel drum under the elastic force of the spring. When the weld of the steel drum is in contact with the probe, the probe will be displaced, so as to change the elastic force of the spring pressing the pressure sensor. When the pressure signal detected by the pressure sensor is suddenly changed, it means that the weld is located at the probe.

[0164] In the detection of the weld, the weld detection assembly 213 can also be a visual detection camera.

[0165] The steel drum rotation adjustment assembly 214 comprises a rotation rod 2141 and a rotation adjustment motor 2142.

[0166] The rotary adjusting motor 2142 is fixed on the printing frame 21, and the rotary adjusting motor 2142 drives the supporting positioning wheel to rotate through the rotary rod 2141, since the supporting positioning wheel supports the steel drum, and then the steel drum is conveniently rotated, after the welding seam of the steel drum is located at the probe, the steel drum is rotated by a certain angle through the rotary adjusting motor 2142 according to the range that needs to be printed on the outer wall of the steel drum.

[0167] The supporting positioning wheel comprises an integral 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 greater than the diameter of the positioning wheel, when the steel drum is placed, the steel drum is placed on the positioning wheel, and the adjacent two limiting wheels clamp the steel drum, so that the steel drum is conveniently limited.

[0168] After the welding seam of the steel drum is adjusted, the steel drum is conveyed step by step to the lifting frame by the carrying positioning unit 221 on the steel drum semicircular frame under the premise that the steel drum is not rotated.

[0169] The implementation principle of the flexible full-automatic steel drum screen printing production line in the embodiment of the application is as follows: in the steel drum printing process, first, the steel drum is vertically placed on the conveying roller group 112 of the feeding device 1, and the steel drum is moved along the steel drum conveying direction through the rotating conveying roller group 112. The centering assembly 113 makes the steel drum centered and reduces the conveying resistance through the centering guide frame 1131 and the centering guide wheel 1133. The conveying rhythm control assembly 115 controls the conveying rhythm of the steel drum, and ensures that the steel drum is accurately blocked and released at the turnover mechanism 12. The turnover mechanism 12 turns over the steel drum to the horizontal state through the turnover support 122 power source, and conveys the steel drum to the printing device 2. In the printing device 2, the steel drum is placed on the supporting positioning unit 212 of the supporting assembly 211, the steel drum carrying frame 22 carries the steel drum to the steel drum lifting frame 23 along the steel drum conveying direction, 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 ink applicator 2433, and the ink is scraped off to the steel drum, and at the same time, the steel drum is rotated under the friction force of the screen printing template 242 and the steel drum, so that the ink is uniformly printed on the steel drum. After the printing is completed, the steel drum lifting frame 23 resets the steel drum, and the steel drum carrying frame 22 carries the steel drum to the discharging device 3 for discharging.

[0170] The implementation principle of the flexible full-automatic steel drum screen printing production line according to an embodiment of the 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 steel drum conveying direction through the rotating conveying roller group 112. The centering assembly 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 assembly 115 controls the conveying rhythm of the steel drum, and ensures that the steel drum is accurately blocked and released at the turnover mechanism 12. The turnover mechanism 12 turns the steel drum to a horizontal state through the turnover support 122 power source, and conveys the steel drum to the printing device 2. In the printing device 2, the steel drum is placed on the support positioning unit 212 of the support assembly 211, the steel drum carrying frame 22 carries the steel drum along the steel drum conveying direction 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 ink applicator 2433, and the ink is scraped onto the steel drum, and at the same time, the steel drum is rotated under the friction force of the screen printing template 242 and the steel drum itself, so that the ink is uniformly printed on the steel drum. After the printing is completed, the steel drum lifting frame 23 resets the steel drum, and the steel drum carrying frame 22 carries the steel drum to the discharging device 3 for discharging.

[0171] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A flexible steel drum transfer apparatus, characterized by: The printing frame, the steel drum carrying frame and the carrying positioning unit are included, wherein: A plurality of support positioning units are arranged on the printing frame along the steel drum conveying direction; The steel drum carrying frame is arranged on the printing frame, and at least one pair of the steel drum carrying frames are arranged, and the distance between each pair of the steel drum carrying frames is adjustable; The steel drum carrying frame is relatively moved with the printing frame in the vertical direction through the vertical direction carrying driving unit, and is relatively moved with the printing frame in the horizontal direction through the horizontal direction carrying driving unit; The carrying positioning unit is arranged on the steel drum carrying frame, and a plurality of the carrying positioning units are arranged along the steel drum conveying direction.

2. A flexible steel drum transfer apparatus according to claim 1, wherein: The vertical direction carrying driving unit includes a guide rail frame and an extension driving rod, wherein: The guide rail frame is arranged on the printing frame, and a plurality of the guide rail frames are arranged along the printing frame; The extension driving rod is vertically arranged on the printing frame, and the push rod end of the extension driving rod is arranged on the guide rail frame. The guide rail frame is provided with a linkage assembly, and the linkage assembly includes a linkage frame, a linkage rack, a linkage tooth and a transmission rod, wherein:

3. A flexible steel drum transfer apparatus according to claim 2, wherein: The linkage frame is arranged on the printing frame, and a plurality of the linkage frames are arranged along the printing frame; The linkage rack is matched with a plurality of the linkage frames, and the linkage rack is slidably matched with the linkage frames in the vertical direction, and the linkage rack is arranged on the guide rail frame; The linkage tooth is arranged on the linkage frame, and the linkage tooth is rotationally matched with the linkage frame, and the linkage tooth is matched with a plurality of the linkage racks, and the linkage tooth is engaged with the linkage rack; The transmission rod is coaxially penetrated through a plurality of the linkage teeth, and is fixed with the linkage teeth. The horizontal direction carrying driving unit is a magnetic couple type linear motion actuator, and the magnetic couple type linear motion actuator is arranged on the guide rail frame, and the slider of the magnetic couple type linear motion actuator is fixed with the steel drum carrying frame.

4. A flexible steel drum transfer apparatus as claimed in claim 2, wherein: The carrying positioning unit is provided with a positioning groove at the top.

5. A flexible steel drum transfer apparatus as claimed in claim 1, wherein: The linkage rack is arranged in the guide cylinder, and is slidably matched with the guide cylinder.

6. A flexible steel drum transfer apparatus as claimed in claim 3, wherein: ​

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