Multi-color screen printing equipment for full-automatic fire extinguisher

Abstract

The invention discloses full-automatic fire extinguisher multicolor screen printing equipment which comprises a rack, a conveying belt is arranged on the rack, a plurality of V-shaped supporting plates are evenly arranged on the front side and the rear side of the conveying belt at equal intervals correspondingly, a plurality of positioning printing assemblies are arranged on the rack at intervals, drying assemblies are arranged between the positioning printing assemblies, and the drying assemblies are all arranged on the rack. The positioning printing assembly further comprises a silk-screen printing adjusting assembly and a fire extinguisher positioning assembly, and the silk-screen printing adjusting assembly and the fire extinguisher positioning assembly are oppositely arranged on the rack. The adjustable roller supports are arranged beside the two sides of the conveying belt, so that the equipment is suitable for supporting, lifting, positioning and printing of fire extinguishers of different specifications; and meanwhile, a hand wheel is matched with a lead screw, a sliding rail and a sliding seat adjusting die sleeve, a fire extinguisher bottom positioning block is also suitable for center positioning of fire extinguishers of different specifications so as to guarantee printing precision and stability, and equipment can be rapidly adjusted to required parameters according to production requirements so as to meet machining requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguisher processing equipment, and particularly relates to a fully automatic multi-color screen printing equipment for fire extinguishers. Background Art

[0002] After the fire extinguisher undergoes a water test, it can enter the shell surface screen printing process only when the surface moisture is dried. After the surface ink is dried, the production label and the qualified logo are pasted and hung. The specific process of the traditional operation is as follows: First, perform a water test, then manually transfer each fire extinguisher to an open space and place it properly, wait for the large water droplets on the surface to drip off, and then wipe off the residual water and dirt with a towel, and naturally dry the surface moisture; then manually place each fire extinguisher on the screen printing machine for printing in turn, and after printing, take it down and place it on the open space to naturally dry the ink; finally, manually stick the product production label and hang the qualification certificate sign on each fire extinguisher. The whole process requires manual handling many times, with high labor intensity, long time consumption, and occupies a large amount of production space.

[0003] Nowadays, there is an automatic production line for fire extinguishers that uses a conveyor chain to send fire extinguishers to processes such as water removal, drying, screen printing, and UV curing in turn. However, it is found in production that there are still many problems in the existing automatic printing production line. For example, the applicant's patent publication number: CN111483215A, discloses a fully automatic two-color printing equipment for fire extinguishers, in which the V-shaped support plate for lifting and supporting and positioning the fire extinguisher is fixed and cannot be adjusted according to the size of the fire extinguisher; the die sleeve for positioning both ends of the fire extinguisher and the fire extinguisher bottom positioning block are also fixed and cannot be adjusted according to requirements; therefore, the existing fully automatic two-color printing equipment for fire extinguishers cannot be applied to all specifications and models of fire extinguishers for multi-color screen printing processing and cannot meet the production requirements. Summary of the Invention

[0004] The purpose of the present invention is to provide a fully automatic multi-color screen printing equipment for fire extinguishers to solve the problem that the existing fully automatic printing equipment for fire extinguishers cannot be applied to all specifications and models of fire extinguishers for multi-color screen printing processing and cannot meet the production requirements.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A fully automatic multi-color screen printing equipment for fire extinguishers, including a frame, a conveyor belt is arranged on the frame, a number of V-shaped support plates are evenly and equidistantly arranged on both the front and back sides of the conveyor belt, a number of positioning and printing components are arranged at intervals on the frame, a drying component is arranged between the positioning and printing components, and the drying components are all arranged on the frame. The positioning and printing component further includes a screen printing adjustment component and a fire extinguisher positioning component, and the screen printing adjustment component and the fire extinguisher positioning component are oppositely arranged on the frame.

[0007] Optionally, the drying component includes a drying bin with openings at both ends, which is arranged between the positioning and printing components. A number of PTC heaters are evenly and equidistantly arranged at the top of the drying bin, and the outer side of the drying bin is made of transparent plastic.

[0008] Optionally, the screen printing adjustment component includes a main bracket arranged on the frame. A counterweight is arranged inside the bottom end of the main bracket. The top end of the counterweight is connected to one end of a sprocket group. The sprocket group is arranged at the top end of the main bracket, and the other end of the sprocket group is connected to the top end of a main support plate. On both sides of one end face of the main support plate close to the main bracket, they are respectively connected to slide rails through sliders. The slide rails are arranged on both sides of the main bracket. At the center of one end of the main support plate close to the main bracket, a driving slider is arranged. The driving slider is sleeved on a driving lead screw. The driving lead screw is connected to the output end of a driving lifting servo motor. The driving lifting servo motor is arranged at the top end of the main bracket. A knife plate screen driving component is arranged at the end of the main support plate far from the main bracket.

[0009] Optionally, the knife plate screen driving component includes an auxiliary lifting knife plate cylinder arranged at the end of the main support plate far from the main bracket. On both sides of the output end of the auxiliary lifting knife plate cylinder, printing knife plates are respectively arranged. On both sides of the printing knife plates, screen mounting plates are respectively arranged. The screen mounting plates are respectively arranged on the output ends of a rodless cylinder. The rodless cylinder is arranged on a mounting seat. The mounting seat is slidably arranged on a guide rail. The guide rail is arranged at the bottom end of the main support plate. An auxiliary driving servo motor is arranged on the main support plate. The output end of the auxiliary driving servo motor is connected to a lead screw. A slider is threadedly connected and sleeved on the lead screw. The slider is arranged on the mounting seat.

[0010] Optionally, the positioning and printing component includes a fire extinguisher clamping and rotating component. The fire extinguisher clamping and rotating component includes a fire extinguisher bottom positioning block arranged at the output end of a driving cylinder. The driving cylinder is arranged on a cylinder mounting frame. The cylinder mounting frame is arranged on a sliding seat. The sliding seat is arranged on a guide rail. The guide rail is arranged on the frame. A transmission block is arranged at the bottom end of the sliding seat. The transmission block is threadedly connected and sleeved on an auxiliary screw. One end of the auxiliary screw is provided with a driven gear. The driven gear is connected to a driving gear through a chain. The driving gear is arranged at one end of a transmission rod. The other end of the transmission rod is provided with a first handwheel. The transmission rod is installed on the frame through a bearing seat. A positioning sensor is arranged beside the fire extinguisher bottom positioning block. The cylinder mounting frame is arranged beside one end of a conveyor belt. An opposite side of the cylinder mounting frame is provided with a servo motor mounting frame. A die sleeve driving servo motor is arranged on the servo motor mounting frame. The bottom of the servo motor mounting frame is arranged on a first guide rail through a sliding plate. One end of the sliding plate is connected to the output end of an adjusting cylinder. The adjusting cylinder is arranged on a support base plate. The first guide rail is arranged on the support base plate. The bottom of the support base plate is slidably arranged on a second guide rail. The second guide rail is arranged on the frame. A transmission threaded block is arranged at the bottom end of the support base plate and connected to a lead screw. One end of the lead screw is provided with a second handwheel. The output end of the die sleeve driving servo motor is provided with a die sleeve.

[0011] Optionally, a lifting plate is provided between the cylinder mounting bracket and the servo motor mounting bracket. A main lifting and adjusting cylinder is provided at the bottom end of the lifting plate. The main lifting and adjusting cylinder is arranged on the frame. The lifting plate is arranged below the conveyor belt. Two adjusting sliding seats are provided on the lifting plate. The adjusting sliding seats are arranged on the auxiliary guide rails. Locking bolts are respectively provided on the adjusting sliding seats and connected to the lifting plate. A first roller bracket is provided on one of the adjusting sliding seats. First movable rollers are respectively provided at the left and right ends of the first roller bracket. A second roller bracket is provided on the other adjusting sliding seat. Second movable rollers are respectively provided at the left and right ends of the second roller bracket. A brake block is arranged between the second movable rollers. The brake block is arranged at the output end of the brake cylinder. The brake cylinder is arranged on the second roller bracket.

[0012] Optionally, the bottom positioning block of the fire extinguisher and the die sleeve are on the same center line. The die sleeve is detachably arranged on the output end of the die sleeve driving servo motor. A color difference sensor and a positioning sensor are arranged beside the die sleeve. Both the color difference sensor and the positioning sensor are arranged on the servo motor mounting bracket.

[0013] Optionally, the servo motor mounting bracket includes a top plate. Support columns are respectively provided at the four corners of the top plate. Guide sleeves are respectively provided on the support columns. A movable plate is arranged between the guide sleeves. A sliding plate is provided at the bottom end of the support column. The sliding plate is arranged on the slide rail. The slide rail is arranged on the support bottom plate. A third handwheel is provided on the top plate to cooperate with an auxiliary screw rod. The auxiliary screw rod is threadedly connected and penetrates through the movable plate. The die sleeve driving servo motor is arranged on the movable plate.

[0014] The beneficial effects of the present invention are as follows: By providing adjustable roller brackets on both sides of the conveyor belt, the device can be adapted to support, lift and position different specifications of fire extinguishers for printing. At the same time, by using the handwheel to cooperate with the lead screw, slide rail and sliding seat to adjust the die sleeve and the bottom positioning block of the fire extinguisher, it is also applicable to different specifications of fire extinguishers for central positioning to ensure the accuracy and stability during printing. The device can be quickly adjusted to the required parameters according to production needs to meet the processing requirements. Compared with the existing printing equipment, the practicality and functionality are improved, and it is applicable to the processing of different specifications of fire extinguisher production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described by way of examples with reference to the accompanying drawings, wherein:

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 3 is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 4 is a front view structural schematic diagram of the present invention;

[0020] Figure 5 It is a three-dimensional structural schematic diagram of the screen printing adjustment component and the fire extinguisher positioning component in the present invention;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the screen printing adjustment component and the fire extinguisher positioning component in the present invention;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of the screen printing adjustment component and the fire extinguisher positioning component in the present invention;

[0023] Figure 8 It is a three-dimensional structural schematic diagram of the fire extinguisher positioning component in the present invention.

[0024] In the figure: 1, frame; 2, positioning and printing component; 3, drying component; 4, conveyor belt; 5, V-shaped pallet; 21, screen printing adjustment component; 22, fire extinguisher positioning component; 205, auxiliary lifting knife plate cylinder; 211, main support; 212, counterweight; 213, sprocket group; 214, main support plate; 215, driving lifting servo motor; 216, printing knife plate; 217, screen mounting plate; 221, lifting plate; 223, first roller frame; 224, second roller frame; 225, second movable roller; 226, brake block; 227, support bottom plate; 228, second handwheel; 229, sliding plate; 230, adjusting cylinder; 231, transmission rod; 232, first handwheel; 233, chain; 234, cylinder mounting frame; 235, driving cylinder; 236, fire extinguisher bottom positioning block; 237, servo motor mounting frame; 238, third handwheel; 239, die sleeve driving servo motor; 240, die sleeve. Specific embodiments

[0025] Any feature disclosed in this specification, unless specifically described, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically described, each feature is only an example of a series of equivalent or similar features.

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] In the description of the invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "equipped with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, such as welding, riveting, bonding, etc., or a detachable connection, such as screw connection, key connection, pin connection, etc., or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] As Figure 1-8 shown, a full-automatic multi-color screen printing device for fire extinguishers includes a frame 1. A conveyor belt 4 is arranged on the frame 1. A number of V-shaped pallets 5 are evenly and equidistantly arranged on the front and rear sides of the conveyor belt 4 respectively. A number of positioning and printing assemblies 2 are arranged on the frame 1 at intervals. A drying assembly 3 is arranged between the positioning and printing assemblies 2. The drying assemblies 3 are all arranged on the frame 1. The positioning and printing assembly 2 further includes a screen printing adjustment assembly 21 and a fire extinguisher positioning assembly 22. The screen printing adjustment assembly 21 and the fire extinguisher positioning assembly 22 are oppositely arranged on the frame 1. It should be noted that an operation panel and a control box are arranged beside the positioning and printing assembly 2. The control box is electrically connected to the operation panel, the screen printing adjustment assembly 21, the fire extinguisher positioning assembly 22, the drying assembly 3, and the conveyor belt 4.

[0030] Specifically, the drying assembly 3 includes a drying chamber. Both ends of the drying chamber are open and it is arranged between the positioning and printing assemblies. A number of PTC heaters are evenly and equidistantly arranged at the top of the drying chamber. The outer side end of the drying chamber is made of transparent plastic. It should be noted that the outer side end of the drying chamber being made of transparent plastic is convenient for observing the situation of the fire extinguisher during drying after printing, which is beneficial for the operator to handle quickly.

[0031] Specifically, the screen printing adjustment assembly 21 includes a main bracket 211. The main bracket 211 is arranged on the frame 1. A counterweight 212 is arranged inside the bottom end of the main bracket 211. The top end of the counterweight 212 is connected to one end of a sprocket group 213. The sprocket group 213 is arranged at the top end of the main bracket 211. The other end of the sprocket group 213 is connected to the top end of a main support plate 214. Both sides of one end surface of the main support plate 214 close to the main bracket 211 are respectively connected to slide rails through sliders. The slide rails are arranged on both sides of the main bracket 211. A driving slider is arranged at the center of one end of the main support plate 214 close to the main bracket 211. The driving slider is sleeved on a driving lead screw. The driving lead screw is connected to the output end of a driving lifting servo motor 215. The driving lifting servo motor 215 is arranged at the top end of the main bracket 211. A plate screen driving assembly is arranged at one end of the main support plate 214 far from the main bracket 211. It should be noted that when the driving lifting servo motor 215 works, the driving lead screw rotates, so that the main support plate 214 cooperates with the driving slider, the slider and the slide rail to move up and down to the required position, thereby achieving the effect of adjusting the working position of the printing plate screen. At the same time, the setting of the counterweight 212 and the sprocket group 213 will ensure that the movement of the main support plate 214 is more stable and reliable, ensuring the printing quality.

[0032] Specifically, the plate screen driving assembly includes an auxiliary lifting plate screen cylinder 205. The auxiliary lifting plate screen cylinder 205 is arranged at one end of the main support plate 214 far from the main bracket 211. Printing plate screens 216 are respectively arranged on both sides of the output end of the auxiliary lifting plate screen cylinder 205. Screen mounting plates 217 are respectively arranged beside both sides of the printing plate screens 216. The screen mounting plates 217 are respectively arranged on the output ends of rodless cylinders. The rodless cylinders are arranged on a mounting seat. The mounting seat is slidably arranged on a guide rail. The guide rail is arranged at the bottom end of the main support plate 214. An auxiliary driving servo motor is arranged on the main support plate 214. The output end of the auxiliary driving servo motor is connected to a lead screw. A slider is threadedly sleeved on the lead screw. The slider is arranged on the mounting seat. It should be noted that when the auxiliary lifting plate screen cylinder 205 works, it will adjust the printing plate screens 216 to work. At the same time, the setting of the rodless cylinders will facilitate adjusting the distance between the two screen mounting plates 217 to facilitate the installation of the required screen. When the auxiliary driving servo motor works, it cooperates with the lead screw, the slider, the mounting seat and the guide rail to make the screen move to cooperate with the printing plate screens 216 to work.

[0033] Specifically, the positioning and printing assembly 2 includes a fire extinguisher clamping and rotating assembly. The fire extinguisher clamping and rotating assembly includes a fire extinguisher bottom positioning block 236. The fire extinguisher bottom positioning block 236 is arranged at the output end of a driving cylinder 235. The driving cylinder 235 is arranged on a cylinder mounting bracket 234. The cylinder mounting bracket 234 is arranged on a sliding seat. The sliding seat is arranged on a guide rail. The guide rail is arranged on the frame 1. A transmission block is arranged at the bottom end of the sliding seat. The transmission block is threadedly sleeved on an auxiliary screw rod. One end of the auxiliary screw rod is provided with a driven gear. The driven gear is connected to a driving gear through a chain 233. The driving gear is arranged at one end of a transmission rod 231. A first hand wheel 232 is arranged at the other end of the transmission rod 231. The transmission rod 231 is mounted on the frame 1 through a bearing block. A positioning sensor is arranged beside the fire extinguisher bottom positioning block 236. The cylinder mounting bracket 234 is arranged beside one end of a conveyor belt 4. A servo motor mounting bracket 237 is arranged on the opposite side of the cylinder mounting bracket 234. A die sleeve driving servo motor 239 is arranged on the servo motor mounting bracket 237. The bottom of the servo motor mounting bracket 239 is arranged on a first guide rail through a sliding plate 229. One end of the sliding plate 229 is connected to the output end of an adjusting cylinder 230. The adjusting cylinder 230 is arranged on a support bottom plate 227. The first guide rail is arranged on the support bottom plate 227. The bottom of the support bottom plate 227 is slidably arranged on a second guide rail. The second guide rail is arranged on the frame 1. A transmission thread block is arranged at the bottom end of the support bottom plate 227 and connected to a lead screw. A second hand wheel 228 is arranged at one end of the lead screw. The output end of the die sleeve driving servo motor 239 is provided with a die sleeve 240. It should be noted that the driving cylinder 235 works in cooperation with the positioning sensor to push out the fire extinguisher bottom positioning block 236 to tightly press against the bottom of the fire extinguisher bottle for positioning. The first hand wheel 232 cooperates with the transmission rod 231, the driving gear, the chain 233, the driven gear, the auxiliary screw rod, the sliding seat, the transmission block, and the guide rail to facilitate adjusting the working position of the cylinder mounting bracket 234, thereby adjusting the distance from the servo motor mounting bracket 237. The servo motor mounting bracket 237 makes the die sleeve 240 move to the position of the fire extinguisher lifting handle through the working of the adjusting cylinder 230 to position and cooperate with the fire extinguisher bottom positioning block 236 to clamp the fire extinguisher. At the same time, the second hand wheel 228 cooperates with the support bottom plate 227, the transmission thread block, the lead screw, and the second guide rail to adjust the working position of the servo motor mounting bracket 237, thereby adjusting the distance from the adjusting cylinder mounting bracket 234.

[0034] Specifically, a lifting plate 221 is provided between the cylinder mounting bracket 234 and the servo motor mounting bracket 239. A main lifting and adjusting cylinder is provided at the bottom end of the lifting plate 221. The main lifting and adjusting cylinder is arranged on the frame 1. The lifting plate 221 is arranged below the conveyor belt 4. Two adjusting sliding seats, front and back, are provided on the lifting plate 221. The adjusting sliding seats are arranged on the auxiliary guide rails. Locking bolts are respectively provided on the adjusting sliding seats and connected to the lifting plate 221. A first roller frame 223 is provided on one of the adjusting sliding seats. First movable rollers are respectively arranged at the left and right ends of the first roller frame 223. A second roller frame 224 is provided on the other adjusting sliding seat. Second movable rollers 225 are respectively arranged at the left and right ends of the second roller frame 224. A brake block 226 is arranged between the second movable rollers 225. The brake block 226 is arranged at the output end of the brake cylinder. The brake cylinder is arranged on the second roller frame 224. It should be noted that the operation of the main lifting and adjusting cylinder facilitates lifting the second roller frame 224 and the second movable rollers 225 to the bottom of the fire extinguisher to lift the fire extinguisher to the required working position. At the same time, the first movable rollers and the second movable rollers 225 are used to make it roll stably during printing. At the same time, the cooperation of the brake cylinder and the brake block 226 will ensure the accuracy and stability of the fire extinguisher during printing positioning, so that the fire extinguisher is not affected by the inertia of the dry powder in the bottle during rotation positioning, improving its printing quality. An auxiliary lifting cylinder is provided at the bottom end of the first roller frame 223. The auxiliary lifting cylinder is arranged on the adjusting sliding seat. During printing, the first roller frame 223 descends away from the fire extinguisher.

[0035] Specifically, the bottom positioning block 236 of the fire extinguisher and the die sleeve 240 are on the same center line. The die sleeve 240 is detachably arranged on the output end of the die sleeve driving servo motor 239. A color difference sensor and a positioning sensor are arranged beside the die sleeve 240. Both the color difference sensor and the positioning sensor are arranged on the servo motor mounting bracket 237. It should be noted that the die sleeve driving servo motor 239 works in cooperation with the color difference sensor and the positioning sensor to quickly position and reset the die sleeve 240.

[0036] Specifically, the servo motor mounting bracket 237 includes a top plate. Support columns are respectively arranged at the four corners of the top plate. Guide sleeves are respectively arranged on the support columns. A movable plate is arranged between the guide sleeves. A slide plate 229 is arranged at the bottom end of the support column. The slide plate 229 is arranged on the slide rail. The slide rail is arranged on the support bottom plate 227. A third handwheel 238 is arranged on the top plate to cooperate with an auxiliary screw rod. The auxiliary screw rod is threadedly connected and penetrates through the movable plate. The die sleeve driving servo motor is arranged on the movable plate. It should be noted that the cooperation of the third handwheel 238, the auxiliary screw rod, the guide sleeve and the support column will facilitate adjusting the working height of the die sleeve 240.

[0037] The working principle of this specific embodiment is as follows: First, set the required number of positioning and printing components 2 on the frame 1 according to the number of printing colors required. Adjust the distance between the servo motor mounting bracket 237 and the adjusting cylinder mounting bracket 234 in advance according to the specifications of the fire extinguisher bottles to be processed through the first handwheel 232 and the second handwheel 228; adjust the working height of the die sleeve 240 through the third handwheel 238; adjust the distance between the first roller frame 223 and the second roller frame 224 through the locking bolts, and then place the fire extinguisher on the V-shaped pallet 5 of the conveyor belt 4.

[0038] When the fire extinguisher bottle reaches above the first roller frame 223 and the second roller frame 224, the main lifting and adjusting cylinder works to lift the first roller frame 223 and the second roller frame 224, so that the fire extinguisher bottle is lifted off the V-shaped pallet 5. At the same time, the adjusting cylinder 230 and the driving cylinder 235 work synchronously to make the die sleeve 240 and the bottom positioning block 236 of the fire extinguisher move closer to each other and clamp the fire extinguisher. At this time, the fire extinguisher is in the starting printing position. At the same time, the driving lifting servo motor 215 works to lower the silk screen and the printing plate to the required working position. Then the auxiliary lifting printing plate cylinder 205 works to lower the printing plate again so that the silk screen is closely attached to the surface of the fire extinguisher bottle. At this time, the auxiliary driving servo motor of the silk screen mounting plate 217 works to move the silk screen, and the die sleeve driving servo motor 239 also moves synchronously to cooperate with the die sleeve 240 to drive the fire extinguisher to rotate, and the fire extinguisher is printed. When the printing is completed, the braking cylinder cooperates with the brake block 226 to stop the second movable roller 225 from rotating, so as to avoid the influence of the inertia of the dry powder in the bottle when the fire extinguisher rotates and positions.

[0039] After single-color printing is completed, the bottom positioning block 236 of the fire extinguisher, the die sleeve 240, the silk screen, and the printing plate 216 retract away from the fire extinguisher. The first roller frame 223 and the second roller frame 224 descend, so that the fire extinguisher returns to the V-shaped pallet 5 and enters the drying component 3 through the conveyor belt 4 for drying. By repeating this cycle, multi-color printing can be completed.

[0040] The present invention is not limited to the foregoing specific embodiments. The present invention extends to any new feature or any new combination disclosed in this specification, as well as any new method or process step or any new combination disclosed.

Claims

1. A fully automatic multi-color screen printing device for fire extinguishers, characterized by: It includes a frame, a conveyor belt is arranged on the frame, a plurality of V-shaped support plates are evenly and equidistantly arranged on both sides of the conveyor belt, a plurality of positioning printing components are arranged on the frame at intervals, a drying component is arranged between the positioning printing components, and the drying components are all arranged on the frame, the positioning printing component also includes a screen printing adjustment component and a fire extinguisher positioning component, and the screen printing adjustment component and the fire extinguisher positioning component are arranged on the frame opposite to each other.

2. The fully automatic multi-color screen printing device for fire extinguishers according to claim 1, characterized in that: The drying component comprises a drying bin, both ends of which are opened and arranged between the positioning printing components. A plurality of PTC heaters are evenly and equidistantly arranged at the top of the drying bin, and the outer end of the drying bin is made of transparent plastic.

3. The fully automatic multi-color screen printing device for fire extinguishers according to claim 1, characterized in that: The screen printing adjustment assembly includes a main bracket, which is arranged on the frame, a counterweight block is arranged in the bottom end of the main bracket, the top of the counterweight block is connected to one end of a sprocket group, the sprocket group is arranged at the top of the main bracket, the other end of the sprocket group is connected to the top of a main support plate, the two sides of the main support plate close to one end surface of the main bracket are respectively connected to slide rails through sliders, the slide rails are arranged on both sides of the main bracket, a transmission slider is arranged at the center of one end of the main support plate close to the main bracket, the transmission slider is sleeved on a transmission screw rod, the transmission screw rod is connected to the output end of a driving lifting servo motor, the driving lifting servo motor is arranged at the top of the main bracket, and a knife screen driving assembly is arranged at one end of the main support plate away from the main bracket.

4. The fully automatic multi-color screen printing device for fire extinguishers according to claim 3 is characterized in that: The knife plate screen drive assembly includes an auxiliary knife plate lifting cylinder, the auxiliary knife plate lifting cylinder is arranged on one end of the main support plate away from the main bracket, printing knife plates are arranged on both sides of the output end of the auxiliary knife plate lifting cylinder, and screen mounting plates are arranged on both sides of the printing knife plates, and the screen mounting plates are respectively arranged on the output ends of the rodless cylinder, the rodless cylinder is arranged on a mounting seat, the mounting seat is slidably arranged on a guide rail, the guide rail is arranged on the bottom end of the main support plate, and an auxiliary drive servo motor is arranged on the main support plate, and the output end of the auxiliary drive servo motor is connected to a screw rod, and a slider is threadedly sleeved on the screw rod, and the slider is arranged on the mounting seat.

5. The fully automatic multi-color screen printing device for fire extinguishers according to claim 1, characterized in that: The positioning printing assembly includes a fire extinguisher clamping and rotating assembly, the fire extinguisher clamping and rotating assembly includes a fire extinguisher bottom positioning block, the fire extinguisher bottom positioning block is arranged at the output end of the driving cylinder, the driving cylinder is arranged on the cylinder mounting frame, the cylinder mounting frame is arranged on the slide, the slide is arranged on the guide rail, the guide rail is arranged on the frame, a transmission block is arranged at the bottom end of the slide, the transmission block is threadedly connected and sleeved on the auxiliary screw, a driven gear is arranged at one end of the auxiliary screw, the driven gear is connected to the driving gear through a chain, the driving gear is arranged at one end of the transmission rod, a first hand wheel is arranged at the other end of the transmission rod, the transmission rod is installed on the frame through a bearing seat, the fire extinguisher A positioning sensor is arranged next to the bottom positioning block, the cylinder mounting frame is arranged next to one end of the conveyor belt, a servo motor mounting frame is arranged on the opposite side of the cylinder mounting frame, a mold sleeve driving servo motor is arranged on the servo motor mounting frame, the bottom of the servo motor mounting frame is arranged on the first guide rail through a slide, one end of the slide is connected to the output end of the adjusting cylinder, the adjusting cylinder is arranged on the supporting bottom plate, the first guide rail is arranged on the supporting bottom plate, the bottom of the supporting bottom plate is slidingly arranged on the second guide rail, the second guide rail is arranged on the frame, a transmission thread block is arranged at the bottom end of the supporting bottom plate to be connected with a screw rod, a second hand wheel is arranged at one end of the screw rod, and a mold sleeve is arranged at the output end of the mold sleeve driving servo motor.

6. The fully automatic multi-color screen printing device for fire extinguishers according to claim 5, characterized in that: A lifting plate is arranged between the cylinder mounting frame and the servo motor mounting frame, a main lifting adjustment cylinder is arranged at the bottom end of the lifting plate, the main lifting adjustment cylinder is arranged on the frame, the lifting plate is arranged below the conveyor belt, two front and rear adjustment slides are arranged on the lifting plate, the adjustment slides are arranged on the auxiliary guide rails, locking bolts are arranged on the adjustment slides to connect with the lifting plate, a first roller frame is arranged on one of the adjustment slides, first movable rollers are arranged at the left and right ends of the first roller frame, a second roller frame is arranged on the other adjustment slide, second movable rollers are arranged at the left and right ends of the second roller frame, a brake block is arranged between the second movable rollers, the brake block is arranged at the output end of the brake cylinder, and the brake cylinder is arranged on the second roller frame.

7. The fully automatic multi-color screen printing device for fire extinguishers according to claim 5, characterized in that: The bottom positioning block of the fire extinguisher is on the same center line as the mold sleeve. The mold sleeve is detachably arranged on the output end of the mold sleeve driving servo motor. A color difference sensor and a positioning sensor are arranged next to the mold sleeve. The color difference sensor and the positioning sensor are both arranged on the servo motor mounting frame.

8. The fully automatic multi-color screen printing device for fire extinguishers according to claim 5, characterized in that: The servo motor mounting frame includes a top plate, support columns are respectively arranged at the four corners of the top plate, guide sleeves are respectively arranged on the support columns, a movable plate is arranged between the guide sleeves, the slide plate is arranged at the bottom end of the support column, the slide plate is arranged on the slide rail, the slide rail is arranged on the support bottom plate, a third hand wheel is arranged on the top plate to cooperate with an auxiliary screw, the auxiliary screw is threadedly connected and passes through the movable plate, and the mold sleeve driving servo motor is arranged on the movable plate.

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