Cup incline plate printing apparatus

Abstract

The present application relates to cup body inclined plate printing equipment, the first inclined transfer roller assembly and the second inclined transfer roller assembly are arranged at the bottom of the roller unit, the rotating disc is arranged at the bottom of the second inclined transfer roller assembly, a plurality of fan-shaped printing plates are arranged on the surface of the rotating disc, the printing plates are in abutment with the second inclined transfer roller assembly and the cup body clamp, the body is further provided with an adjusting mechanism capable of adjusting the inclination angle of the rotating disc, the fan-shaped printing plates cooperate with the rotating disc with adjustable inclination angle, so that the printing plates are transferred in the inclined posture matched with the taper of the surface of the conical cup body, the axial linear speed difference is eliminated, the uniformity of ink transfer is ensured, the first locking mechanism mechanically locks the second conical barrel roller during shutdown to prevent the roller body from deviating, the printing device and the drying device are arranged in groups and are spaced apart, so that the cup body completes multi-layer superimposed printing and instant curing in one circulation, and the production efficiency of multi-layer printing is improved.

Description

Technical Field

[0001] This invention relates to the field of cup printing technology, specifically to cup inclined plate printing equipment. Background Technology

[0002] Currently, cylindrical roller printing devices are commonly used for printing on the outer surface of paper cups. The printing roller of this device has a cylindrical structure. During printing, the cylindrical roller is directly pressed against the outer surface of the cup. The ink is transferred to the surface of the cup by the rotation of the roller, thus completing the printing operation.

[0003] The publication number is CN118683175A, which discloses a rotating cup-feeding device for cup printing and a cup-processing technology. The device includes a turntable mechanism with multiple sets of mold mechanisms evenly installed around its periphery. A feeding mechanism, a printing mechanism, a drying mechanism, and a discharging mechanism are respectively arranged around the outside of the turntable mechanism according to the cup printing production sequence. The turntable mechanism includes a ring frame with a ring slide rail slidably mounted on it. Each mold mechanism includes a mounting base connected to the turntable mechanism, with a cup mold core rotatably connected to the inner side of the mounting base. The printing mechanism includes an adjustable mounting frame. The process involves setting multiple sets of mold mechanisms on the turntable mechanism and using the turntable... The mechanism drives the mold mechanism through the feeding mechanism, printing mechanism, drying mechanism, and unloading mechanism, which can perform a complete printing operation on the cup body in one loading and unloading operation on the device. This technology uses cylindrical printing for printing on the cup body. However, the cup body of paper cups is usually conical, and its outer diameter gradually decreases from the cup mouth to the cup bottom. When the cylindrical roller directly prints on the outer surface of the conical cup body, the contact line between the roller and the cup body is not of equal diameter along the cup body axis. The outer diameter of the cup mouth end is larger and the linear velocity is higher, while the outer diameter of the cup bottom end is smaller and the linear velocity is lower. This causes the relative linear velocity of each point in the contact area between the roller and the cup body to be different along the cup body axis, resulting in the printing ink transfer amount of the upper part of the cup body being inconsistent with that of the lower part.

[0004] In addition, the difference in linear speed will also affect the uniformity of the pressure of the roller on the cup, further aggravating the problem of uneven printing depth. In severe cases, defects such as local missing printing or ink accumulation may occur, which directly affect the appearance quality and printing consistency of the paper cup.

[0005] In summary, existing cylindrical roller printing methods cannot guarantee consistent printing quality when dealing with conical cups due to the different linear velocities at the top and bottom of the cup. Therefore, there is an urgent need for printing equipment that can adapt to the surface characteristics of conical cups. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a cup body inclined plate printing device in view of the shortcomings of the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cup body inclined plate printing device, comprising an indexing turntable for mounting a plurality of cup body clamps, wherein various types of clamps are respectively arranged along the outer periphery of the indexing turntable.

[0008] Feeding mechanism: transports the unprinted cups to the cup clamps;

[0009] Printing device: Prints on the outer circumference of the cup;

[0010] Drying device: Used to dry the printed cups;

[0011] The unloading mechanism transports and collects the printed cups.

[0012] The printing apparatus includes a frame and a printing press mounted on top of the frame.

[0013] The printing machine is characterized by the following features: it includes opposing mounting frames, with a plurality of roller units arranged between the mounting frames; a first inclined transfer roller assembly and a second inclined transfer roller assembly are located at the bottom of the roller units on the mounting frames; a rotating disk is located at the bottom of the second inclined transfer roller assembly on the machine frame; a plurality of fan-shaped printing plates are arranged on the surface of the rotating disk; the printing plates are located at the bottom of the second inclined transfer roller assembly and the cup clamp and abut against the second inclined transfer roller assembly and the cup clamp; and the machine body is further provided with an adjustment mechanism capable of adjusting the tilt angle of the rotating disk.

[0014] By adopting the above technical solution, a roller unit is set between the mounting frames, and a first inclined transfer roller assembly and a second inclined transfer roller assembly are set at its bottom. At the same time, a rotating disk with a fan-shaped printing plate is located at the bottom of the second inclined transfer roller assembly on the machine frame. The printing plate abuts against the second inclined transfer roller assembly and the cup body clamp. The machine body is also equipped with an adjustment mechanism that can adjust the tilt angle of the rotating disk. The fan-shaped printing plate, in conjunction with the adjustment mechanism that can adjust the tilt angle of the rotating disk, enables the printing plate to transfer at an inclined posture that adapts to the surface of the conical cup body. This eliminates the difference in linear velocity at various points along the axial direction of the conical cup body, solves the problem of inconsistent ink transfer and uneven pressure caused by the conicity of the cup body, avoids defects such as local missing printing or ink accumulation, and ensures the consistency of printing quality on the outer surface of the conical cup body.

[0015] The aforementioned cup-body inclined plate printing equipment can be further configured as follows: the first inclined transfer roller assembly includes a plurality of first inclined transfer rollers with the mounting frame located at the bottom of the rolling unit, a first driving component for driving the first inclined transfer roller is provided on one side of the first inclined transfer roller, the mounting frame is provided with inclined roller fixing frames on both sides of the first inclined transfer roller, the first inclined transfer roller is rotatably connected to the inclined roller fixing frame, and the first driving component passes through the inclined roller fixing frame and is connected to any end of the first inclined transfer roller.

[0016] Using the above technical solution, a number of first inclined transfer rollers are arranged at the bottom of the mounting frame of the roller unit. A first drive assembly is provided on one side of the first inclined transfer roller to drive its rotation. Inclined roller fixing frames are provided on both sides of the mounting frame of the first inclined transfer roller. The first inclined transfer roller is rotatably connected to the inclined roller fixing frame. The first drive assembly passes through the inclined roller fixing frame and is connected to the end of any first inclined transfer roller. The inclined roller fixing frame stably connects the first inclined transfer roller to the mounting frame, and the first drive assembly directly drives the first inclined transfer roller to rotate through the inclined roller fixing frame. This provides reliable installation support and stable power input for the inclined transfer roller group, thereby ensuring the smooth operation of the inclined transfer roller in an inclined posture. It also helps to cooperate with the fan-shaped printing plate and the adjustment mechanism to eliminate the difference in linear velocity along the axial direction of the conical cup, ensuring the uniformity of ink transfer and the stability of printing pressure.

[0017] The aforementioned cup-body inclined plate printing equipment can be further configured such that: the second inclined transfer roller assembly includes a second inclined transfer roller with a mounting frame located at the bottom of the first inclined transfer roller, the second inclined transfer roller abutting against the first inclined transfer roller, and the mounting frame located on one side of the second inclined transfer roller having a second driving component for driving the second inclined transfer roller to rotate and a first locking mechanism for locking the second inclined transfer roller when the machine stops.

[0018] Using the above technical solution, a second inclined transfer roller is installed at the bottom of the first inclined transfer roller on the mounting frame. The second inclined transfer roller abuts against the first inclined transfer roller. The mounting frame is provided with a second drive assembly for driving the second inclined transfer roller to rotate and a first locking mechanism for locking the second inclined transfer roller when the machine stops. The second inclined transfer roller abutting against the first inclined transfer roller forms an ink transfer path between the inclined rollers. At the same time, the second drive assembly provides independent power drive for the second inclined transfer roller, ensuring stable ink transfer during the inclined transfer process. The first locking mechanism can lock the second inclined transfer roller when the machine stops, preventing the roller from rotating unexpectedly when the equipment is stopped, which would cause ink distribution disorder or position displacement. This ensures the accuracy of the printing position and the reliability of ink transfer when the equipment is restarted.

[0019] The aforementioned cup-body inclined plate printing equipment can be further configured as follows: the second drive assembly includes a second drive source mounted on a mounting frame located on one side of the second inclined transfer roller; the second inclined transfer roller includes a second roller shaft and a second conical roller; the drive end of the second drive source passes through the mounting frame and is provided with a first transmission gear at its end; the second roller shaft is provided with a second transmission gear on the side facing the first transmission gear; the meshing of the first transmission gear and the second transmission gear causes the second drive source to drive the second conical roller to rotate; the first locking mechanism can lock the second transmission gear to lock the second conical roller when the machine stops; the second roller shaft passes through the mounting frame; the first locking mechanism includes a first locking gear mounted on the end of the second roller shaft facing the second drive source; the mounting frame is provided with a rotating screw at the bottom of the first locking gear; the rotating screw meshes with the first locking gear; a first locking block and a first locking handle are mounted on the end of the transmission screw; and a rotating bearing is provided between the transmission screw and the locking block.

[0020] Using the above technical solution, a first locking gear is installed at the end of the second roller shaft facing the second drive source. A rotating screw is provided at the bottom of the first locking gear on the mounting bracket. The rotating screw meshes with the first locking gear. A first locking block and a first locking handle are installed at the end of the transmission screw. A rotating bearing is provided between the transmission screw and the locking block. Through the meshing of the first transmission gear and the second transmission gear, a stable power transmission from the second drive source to the second conical roller is achieved, ensuring the continuity of the roller's operation during the oblique transfer process. At the same time, through the meshing of the rotating screw with the first locking gear, in conjunction with the first locking block and the first locking handle, a mechanical lock is formed on the second conical roller when the machine stops, preventing the roller from rotating unexpectedly due to inertia or external force after the equipment stops, and ensuring the consistency of the printing starting position when restarting.

[0021] The aforementioned cup body inclined plate printing equipment can be further configured such that: the cup body clamp includes a plurality of L-shaped third drive sources disposed on the surface of the indexing turntable; the end of the third drive source is provided with a shaft mounting block for limiting the output end of the third drive source; the end of the output end of the third drive source is provided with a conical block for the cup body to be fitted; the conical block is placed on the top of the printing plate to enable the cup body to fit against the fan-shaped printing plate.

[0022] Using the above technical solution, the L-shaped third drive source, together with the shaft mounting block, forms a stable limit on the output end, ensuring the positioning accuracy of the cup during the printing process; at the same time, the conical block at the end of the output end is used for the cup to fit, and the conical block is placed on the top of the printing plate, so that the cup can fit against the surface of the fan-shaped printing plate, ensuring the surface contact fit between the conical cup and the fan-shaped printing plate, providing a structural basis for uniform ink transfer.

[0023] The aforementioned cup-body inclined plate printing equipment can be further configured as follows: the frame includes a vertically arranged mounting plate, the adjustment mechanism includes an adjustment plate with one end hinged to the mounting plate, the rotating disk is horizontally arranged on the top of the adjustment plate, the printing machine is fixedly connected to the adjustment plate through a mounting arm, a driving component for pushing the adjustment plate to tilt is provided on one side of the mounting plate, a plurality of limiting blocks are provided on the surface of the mounting plate, a plurality of adjusting limiting grooves are provided on the adjustment plate, and the limiting blocks are placed in the adjusting limiting grooves.

[0024] Using the above technical solution, the driving component pushes the adjustment plate hinged to the mounting plate, causing the rotating disk on the top of the adjustment plate and the printing press to tilt together, thus realizing flexible adjustment of the printing angle; at the same time, the cooperation between the limiting block and the adjustment limiting groove guides and limits the movement trajectory of the adjustment plate during the tilting process, ensuring the stability of the adjustment process.

[0025] The aforementioned cup-body inclined plate printing equipment can be further configured as follows: the driving component is a transmission screw, the driving component includes a transmission seat, a transmission screw, and a moving block disposed on the transmission screw, the transmission screw passes through the transmission seat, the transmission seat is inclined along the vertical direction of the mounting seat, one end of the transmission seat is mounted on an adjusting plate and the other end is mounted on a mounting plate, the mounting plate and the adjusting plate are provided with hinge blocks at the transmission seat, the transmission seat is hinged to the mounting plate and the adjusting plate respectively through the hinge blocks, one side of the moving block is fixedly connected to the adjusting plate, and one side of the mounting plate is provided with an auxiliary telescopic guide rod, one end of the auxiliary telescopic guide rod is hinged to the adjusting plate and the other end is hinged to the mounting plate.

[0026] Using the above technical solution, the transmission screw drives the moving block to move along the inclined transmission seat, causing the adjusting plate to rotate around the hinge point, thus realizing the adjustment of the tilt angle of the adjusting plate. At the same time, the auxiliary telescopic guide rods form auxiliary support and guidance on both sides of the adjusting plate, maintaining the stability of the adjusting plate's posture during the tilt adjustment process, avoiding the sway that may occur with unilateral drive, and ensuring the smooth adjustment of the angle of the rotating disk and printing plate.

[0027] The aforementioned cup-body inclined plate printing equipment can be further configured as follows: the mounting plate is provided with several sliders at its bottom, the bottom of the sliders is provided with slide rails extending towards the conical block, the sliders are slidably connected to each other, a moving lead screw is provided on one side of the mounting plate, the moving lead screw is provided with a fixed block, the fixed block is fixedly connected to one side of the mounting plate, and a fifth driving source is provided at the end of the moving lead screw that can drive the moving lead screw to rotate, the fifth driving source can drive the mounting plate to reciprocate towards the conical block.

[0028] Using the above technical solution, the sliding cooperation between the slider and the slide rail provides a stable linear motion guide for the mounting plate, ensuring the direction and smooth operation of the printing device when it moves as a whole. The third drive source drives the moving lead screw to move the mounting plate back and forth along the slide rail, realizing the feeding and retraction of the printing device relative to the cup clamp. During printing, the printing plate can be pushed to the station that contacts the cup, and during loading and unloading, the printing device can be retracted to make room for operation.

[0029] The aforementioned cup body inclined plate printing equipment can be further configured as follows: the feeding device includes a first storage rack disposed on the outer periphery of the indexing turntable, a feeding conveyor belt for transporting cup bodies is provided on one side of the first storage rack, a receiving rack is provided on the side of the feeding conveyor belt facing the indexing turntable, a feeding hole is opened in the center of the receiving rack, a plurality of feeding rollers are provided on the receiving rack at the outer periphery of the feeding hole, a fixing frame for mounting a fourth drive source is provided on one side of the feeding rack, a first synchronous wheel is provided on the side of the fourth drive source facing the indexing turntable, a second synchronous wheel is provided on the feeding rack, the first synchronous wheel, the second synchronous wheel and the feeding rollers are connected by a synchronous belt, the feeding rollers are disposed on the side of the feeding hole facing the indexing turntable, and a feeding groove for rotating and pushing the cup body is opened at the end of the feeding rollers.

[0030] Using the above technical solution, a feeding conveyor belt for transporting cups is provided on one side of the first storage rack. A receiving rack is provided on the side of the feeding conveyor belt facing the indexing turntable. A feeding hole is opened in the center of the receiving rack, and several feeding rollers are provided on the outer periphery of the feeding hole. A fixed frame for mounting the fourth drive source is provided on one side of the feeding rack. The fourth drive source drives the feeding rollers to rotate through the first synchronous wheel, the second synchronous wheel, and the synchronous belt. The feeding conveyor belt transports the cups to the feeding hole of the receiving rack, and then the fourth drive source drives the feeding rollers to rotate through the synchronous wheel and the synchronous belt. The feeding groove at the end of the feeding roller contacts the cups during rotation and pushes them away from the feeding hole, realizing the continuous transport of the cups from the feeding station to the cup clamp on the indexing turntable, avoiding jamming or misalignment of the cups during the handover process.

[0031] The aforementioned cup body inclined plate printing equipment can be further configured as follows: the feeding device includes a feeding platform disposed on one side of the indexing turntable, the surface of the feeding platform is provided with several feeding racks, and the feeding racks form a feeding groove for feeding the printed cup body. The feeding platform is provided with several feeding rollers vertically on both sides of the feeding racks, and the feeding rollers are connected by a synchronous belt. A V-shaped receiving conveyor belt is provided on one side of the feeding platform. The top of the V-shaped receiving conveyor belt is provided with a receiving roller that limits the finished cup body. A V-shaped receiving plate is provided on the side of the V-shaped receiving conveyor belt away from the feeding platform. A second storage rack is provided on one side of the V-shaped receiving plate. A first telescopic cylinder extending along the length direction of the V-shaped receiving plate is provided on the top of the V-shaped receiving plate. A second telescopic cylinder is vertically installed at the end of the first telescopic cylinder. A receiving baffle is fixedly installed at the driving end of the second telescopic cylinder.

[0032] Using the above technical solution, the unloading trough formed between the unloading racks, together with the unloading rollers, guides the printed cups out from the indexing turntable. The cups are then conveyed to a limited position by the V-shaped receiving conveyor belt and receiving rollers. Finally, the first and second telescopic cylinders drive the receiving baffle to push the cups along the V-shaped receiving plate into the second storage rack, thus realizing the orderly unloading, limited conveying, and stacking collection of the printed cups.

[0033] The beneficial effects of this invention are as follows: The fan-shaped printing plate, combined with an adjustable tilting rotating disk, allows the printing plate to transfer ink at an angle that matches the taper of the conical cup surface, eliminating axial linear velocity differences and ensuring uniform ink transfer. The first locking mechanism mechanically locks the second conical roller when the machine stops to prevent roller displacement. The printing and drying devices are arranged in groups at intervals, allowing the cup to complete multi-layer printing and immediate curing in a single pass, thus improving the production efficiency of multi-layer printing. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the present invention;

[0035] Figure 2 This is a structural diagram of the printing apparatus of the present invention;

[0036] Figure 3 This is a diagram showing the internal structure of the printing apparatus of the present invention;

[0037] Figure 4 This is a structural diagram of the first inclined transfer roller assembly and the second inclined transfer roller assembly of the present invention;

[0038] Figure 5 This is a structural diagram of the locking mechanism of the present invention;

[0039] Figure 6 This is a structural diagram of the cup clamp of the present invention;

[0040] Figure 7This is a structural diagram of the feeding mechanism of the present invention;

[0041] Figure 8 This is a structural diagram of the first and second synchronous pulleys of the present invention;

[0042] Figure 9 This is a structural diagram of the feeding mechanism of the present invention;

[0043] Figure 10 This is an enlarged view of the structure at point A of the present invention;

[0044] Figure 11 This is an enlarged view of the structure at point B of the present invention;

[0045] Label annotations: 1-Cup clamp, 2-Indexing turntable, 3-Feeding mechanism, 4-Printing device, 5-Drying device, 6-Unloading mechanism, 7-Frame, 8-Printing machine, 9-Mounting frame, 10-Roller unit, 11-First inclined transfer roller assembly, 12-Second inclined transfer roller assembly, 13-Rotating disk, 14-Printing plate, 15-First inclined transfer roller, 16-First drive assembly, 17-Inclined roller fixing frame, 18-Second inclined roller... Printing roller, 19-Second drive assembly, 20-Second drive source, 21-Second roller shaft, 22-Second conical roller, 23-First transmission gear, 24-Second transmission gear, 25-First locking gear, 26-Rotating screw, 27-First locking block, 28-First locking handle, 29-Rotating bearing, 30-Third drive source, 31-Shaft mounting block, 32-Conical block, 33-Mounting plate, 34-Adjusting plate, 35-Mounting arm 36-Driver component, 37-Limit block, 38-Adjustable limit groove, 39-Transmission seat, 40-Transmission screw, 41-Moving block, 42-Hinge block, 43-Auxiliary telescopic guide rod, 44-Slider, 45-Slide rail, 46-Moving screw, 47-Fixed block, 48-Fifth drive source, 49-First storage rack, 50-Feeding conveyor belt, 51-Receiving rack, 52-Feeding hole, 53-Feeding roller, 54-Fourth drive source, 55- Fixed frame, 56-first synchronous pulley, 57-second synchronous pulley, 58-feeding trough, 59-unloading platform, 60-unloading rack, 61-unloading trough, 62-unloading roller, 63-V-shaped receiving conveyor belt, 64-receiving roller, 65-V-shaped receiving plate, 66-second storage rack, 67-first telescopic cylinder, 68-second telescopic cylinder, 69-receiving baffle, 70-drying box, 71-support frame, 72-drying trough, 73-heating element. Detailed Implementation

[0046] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0047] Example

[0048] Overall structure

[0049] according to Figure 1-11 The present invention provides a cup body inclined plate printing device, including an indexing turntable (2) for mounting a plurality of cup body clamps (1), a feeding mechanism (3), a discharging mechanism (6), and at least one set of printing devices (4) and drying devices (5) are respectively arranged along the outer periphery of the indexing turntable (2). The printing devices (4) and drying devices (5) are arranged in groups at intervals, that is, along the rotation direction of the indexing turntable (2), the drying devices (5) are arranged immediately after the printing devices (4), and the next set of printing devices (4) and drying devices (5) are arranged after the drying devices (5). The indexing turntable (2) drives the cup body clamps (1) to pass through the feeding mechanism (3), the groups of printing devices (4) and drying devices (5) arranged at intervals, and the discharging mechanism (6) in sequence. Each group of printing devices (4) performs superimposed printing on the previous layer of printed pattern and is immediately cured by the drying device (5) that follows, thereby completing the multi-layer superimposed printing of the cup body in one flow.

[0050] The feeding mechanism (3) includes a first storage rack (49) located on the outer periphery of the indexing turntable (2). A feeding conveyor belt (50) for transporting cups is provided on one side of the first storage rack (49). A receiving rack (51) is provided on the side of the feeding conveyor belt (50) facing the indexing turntable (2). A feeding hole (52) is opened in the center of the receiving rack (51). Several feeding rollers (53) are provided on the outer periphery of the feeding hole (52) of the receiving rack (51). A fixing frame (55) for mounting a fourth drive source (54) is provided on one side of the receiving rack (51). A first synchronous wheel (56) is provided on the side of the fourth drive source (54) facing the indexing turntable (2). A second synchronous wheel (57) is provided on the receiving rack (51). The first synchronous wheel (56) and the second synchronous wheel (57) are connected together. 57) and the feeding roller (53) are connected by a synchronous belt. The feeding roller (53) is located on the side of the feeding hole (52) facing the indexing turntable (2). The feeding roller (53) has a feeding groove (58) at the end to rotate and push the cup body. The feeding conveyor belt (50) transports the unprinted cup body from the first storage rack (49) to the feeding hole (52) of the receiving rack (51). The fourth drive source (54) drives the feeding roller (53) to rotate synchronously through the first synchronous wheel (56), the second synchronous wheel (57) and the synchronous belt. The feeding groove (58) at the end of the feeding roller (53) contacts the edge of the cup body during rotation, pushing the cup body from the feeding hole (52) into the corresponding cup body clamp (1) on the indexing turntable (2).

[0051] The cup fixture (1) includes several L-shaped third drive sources (30) set on the surface of the indexing turntable (2). The end of the third drive source (30) is provided with a shaft mounting block (31) that limits the output end of the third drive source (30). The end of the output end of the third drive source (30) is provided with a conical barrel block (32) for the cup body to be fitted. The outer contour of the conical barrel block (32) is conical and matches the inner cavity shape of the cup body to be printed. After the cup body is fitted on the conical barrel block (32), its outer surface is supported and positioned by the conical barrel block (32). The third drive source (30) can drive the conical barrel block (32) to rotate around its own axis, thereby driving the cup body to rotate synchronously during the printing process.

[0052] The printing apparatus (4) includes a frame (7) and a printing press (8) mounted on top of the frame (7). The printing press (8) includes opposing mounting frames (9), with several roller units (10) arranged between the mounting frames (9). The roller units (10) are used to uniformly transfer ink from the ink fountain to the downstream transfer roller. The mounting frames (9) are located at the bottom of the roller units (10) and have a first inclined transfer roller assembly (11) and a second inclined transfer roller assembly (12). The frame (7) is located at the bottom of the second inclined transfer roller assembly (12). A rotating disk (13) is provided, and a number of fan-shaped printing plates (14) are provided on the surface of the rotating disk (13). The printing plates (14) are located at the bottom of the second inclined transfer roller assembly (12) and the cup body clamp (1). The upper surface of the printing plate (14) abuts against the roller surface of the second inclined transfer roller assembly (12) to receive ink, and the lower surface of the printing plate (14) abuts against the outer surface of the cup body clamp (1) to transfer ink to the cup body. The frame (7) is also provided with an adjustment mechanism that can adjust the tilt angle of the rotating disk (13).

[0053] The first inclined transfer roller assembly (11) includes a mounting frame (9) located at the bottom of the roller unit (10) and a plurality of first inclined transfer rollers (15). A first drive assembly (16) is provided on one side of the first inclined transfer roller (15) to drive the first inclined transfer roller (15) to rotate. The mounting frame (9) is provided with inclined roller fixing frames (17) on both sides of the first inclined transfer roller (15). The first inclined transfer roller (15) is rotatably connected to the inclined roller fixing frame (17). The first drive assembly (16) passes through the inclined roller fixing frame (17) and is connected to the end of any first inclined transfer roller (15). The inclined roller fixing frame (17) stably supports each first inclined transfer roller (15) in the mounting frame (9) in an inclined posture. The first drive assembly (16) directly drives the first inclined transfer roller (15) to rotate and transfers the ink from the roller unit (10) to the downstream second inclined transfer roller assembly (12).

[0054] The second inclined transfer roller assembly (12) includes a mounting frame (9) located at the bottom of the first inclined transfer roller (15) and a second inclined transfer roller (18). The second inclined transfer roller (18) abuts against the first inclined transfer roller (15) to receive ink. The mounting frame (9) is located on one side of the second inclined transfer roller (18) and has a second drive assembly (19) for driving the second inclined transfer roller (18) to rotate and a first locking mechanism for locking the second inclined transfer roller (18) when the machine stops. The second drive assembly (19) provides the second inclined transfer roller (18) with a power drive independent of the first inclined transfer roller (15), so that the second inclined transfer roller (18) can transfer ink to the printing plate (14) below at a controllable speed. The first locking mechanism mechanically locks the second inclined transfer roller (18) when the equipment stops to prevent accidental rotation in the stopped state.

[0055] The second drive assembly (19) includes a second drive source (20) located on one side of the second inclined transfer roller (18) and a mounting frame (9). The second inclined transfer roller (18) includes a second roller shaft (21) and a second cone roller (22). The drive end of the second drive source (20) passes through the mounting frame (9) and is provided with a first transmission gear (23) at the end. The second roller shaft (21) is provided with a second transmission gear (24) on the side facing the first transmission gear (23). The first transmission gear (23) meshes with the second transmission gear (24). The power of the second drive source (20) is transmitted to the second roller shaft (21) through the first transmission gear (23) and the second transmission gear (24), which drives the second cone roller (22) to rotate. The first locking mechanism can lock the second transmission gear (24) to fix the position of the second cone roller (22) when the machine stops.

[0056] The first locking mechanism includes a second roller shaft (21) and a first locking gear (25) mounted at the end facing the second drive source (20). A mounting bracket (9) is provided at the bottom of the first locking gear (25) with a rotating screw (26). The rotating screw (26) meshes with the first locking gear (25). A first locking block (27) and a first locking handle (28) are mounted at the end of the rotating screw (26). A rotating bearing (29) is provided between the rotating screw (26) and the first locking block (27). When the machine stops, the operator rotates the first locking handle (28) to drive the rotating screw (26) to rotate and move axially to mesh with the first locking gear (25). The first locking gear (25) is locked by the cooperation of the first locking block (27) and the rotating bearing (29), thereby locking the second cone roller (22).

[0057] The frame (7) includes a vertically mounted mounting plate (33), and the adjustment mechanism includes an adjustment plate (34) with one end hinged to the mounting plate (33). The rotating disk (13) is horizontally mounted on the top of the adjustment plate (34). The printing press (8) is fixedly connected to the adjustment plate (34) via a mounting arm (35). A drive member (36) is provided on one side of the mounting plate (33) to push the adjustment plate (34) to tilt. Several limit blocks (37) are provided on the surface of the mounting plate (33), and several adjustment limit grooves (38) are provided on the adjustment plate (34). The limit blocks (37) are placed in the adjustment limit grooves (38). When the drive member (36) pushes the adjustment plate (34) to rotate relative to the mounting plate (33), the limit blocks (37) slide in the adjustment limit grooves (38) to guide and limit the movement trajectory of the adjustment plate (34).

[0058] The driving component (36) is a transmission screw assembly, including a transmission seat (39) facing each other, a transmission screw (40), and a moving block (41) mounted on the transmission screw (40). The transmission screw (40) passes through the transmission seat (39). The transmission seat (39) is inclined along the vertical direction of the mounting plate (33). One end of the transmission seat (39) is mounted on the adjusting plate (34), and the other end is mounted on the mounting plate (33). Both the mounting plate (33) and the adjusting plate (34) are provided with hinge blocks (42) at the location of the transmission seat (39). The transmission seat (39) is hinged to the mounting plate (33) and the adjusting plate (34) respectively through the hinge blocks (42). One side of the moving block (41) is fixedly connected to the adjusting plate (34). An auxiliary telescopic guide rod (43) is provided on one side of the mounting plate (33). One end of the auxiliary telescopic guide rod (43) is hinged to the adjusting plate (34), and the other end is hinged to the mounting plate (33). When the transmission screw (40) rotates, it drives the moving block (41) to move along the transmission seat (39). The moving block (41) drives the adjusting plate (34) to rotate around the hinge point between it and the mounting plate (33), so that the tilt angle of the rotating disk (13) on the top of the adjusting plate (34) and the printing plate (14) changes accordingly, thereby adjusting the tilt angle of the printing plate (14) to match the taper of the outer surface of the conical cup. The auxiliary telescopic guide rod (43) extends and retracts synchronously during the tilting process of the adjusting plate (34), forming auxiliary support on both sides of the adjusting plate (34).

[0059] The mounting plate (33) is provided with several sliders (44) at the bottom. The bottom of the sliders (44) extends towards the cone block (32) and is provided with a slide rail (45). The sliders (44) and the slide rail (45) are slidably connected. The mounting plate (33) is provided with a moving screw (46) on one side. The moving screw (46) is provided with a fixing block (47). The fixing block (47) is fixedly connected to one side of the mounting plate (33). The end of the moving screw (46) is provided with a fifth drive source (48) that can drive the moving screw (46) to rotate. When the fifth drive source (48) drives the moving screw (46) to rotate, the fixing block (47) drives the mounting plate (33) to move back and forth along the slide rail (45) towards or away from the cone block (32). When the printing station is reached, the entire printing device (4) is pushed towards the cup body so that the lower surface of the printing plate (14) contacts the surface of the cup body. When loading and unloading, the printing device (4) is moved away to make room for operation.

[0060] The drying device (5) includes a drying box (70) with the indexing turntable (2) set on one side of the rotating plate (13). The drying box (70) is connected to the ground by a support frame and placed at the bottom of the cup clamp (1). The drying box (70) has a drying groove (72) on the side facing the cup clamp (1) and a heating element (73) is provided in the drying groove (72). The heating element (73) dries the cup after printing by the printing device (4). The indexing turntable (2) then moves the dried cup to the next printing device (4).

[0061] The feeding mechanism (6) includes a feeding platform (59) located on one side of the indexing turntable (2). The surface of the feeding platform (59) is provided with several feeding racks (60). A feeding groove (61) is formed between the feeding racks (60) for feeding the cup body after printing. Several feeding rollers (62) are vertically arranged on both sides of the feeding racks (60) of the feeding platform (59). The feeding rollers (62) are connected by a synchronous belt to achieve synchronous rotation. A V-shaped receiving conveyor belt (63) is provided on one side of the feeding platform (59). A receiving roller (64) for limiting the finished cup body is provided at the top of the V-shaped receiving conveyor belt (63). A V-shaped receiving plate (65) is provided on the side of the V-shaped receiving conveyor belt (63) away from the feeding platform (59). A second storage rack (66) is provided on the side of the V-shaped receiving plate (65). The top of the receiving plate (65) is provided with a first telescopic cylinder (67) extending along the length of the V-shaped receiving plate (65). A second telescopic cylinder (68) is vertically installed at the end of the first telescopic cylinder (67). A receiving baffle (69) is fixedly installed at the driving end of the second telescopic cylinder (68). The feeding roller (62) guides the cup body from the feeding trough (61) to the V-shaped receiving conveyor belt (63). The receiving roller (64) limits the cup body during the conveying to prevent it from deviating or tipping over. The cup body enters the V-shaped receiving plate (65) along the V-shaped receiving conveyor belt (63). The first telescopic cylinder (67) and the second telescopic cylinder (68) work together to drive the receiving baffle (69) to push the cup body along the V-shaped receiving plate (65) to the second storage rack (66) for stacking and collection.

[0062] The workflow of this embodiment is as follows:

[0063] Loading stage: Unprinted cups are stored in the first storage rack (49). The loading conveyor belt (50) transports the cups one by one to the loading hole (52) of the receiving rack (51). The fourth drive source (54) starts and drives the loading roller (53) to rotate synchronously through the first synchronous wheel (56), the second synchronous wheel (57) and the synchronous belt. The loading groove (58) at the end of the loading roller (53) contacts the edge of the cup during rotation, pushing the cup from the loading hole (52) to the cup clamp (1) at the corresponding station on the indexing turntable (2). The cup is fitted on the outer cone surface of the cone block (32) and is supported and positioned. After loading is completed, the indexing turntable (2) rotates one station and moves the cup clamp (1) carrying the cup to the printing station corresponding to the printing device (4). At the same time, the empty cup clamp (1) rotates back to the loading mechanism (3) to receive the next cup.

[0064] Angle adjustment stage: Before formal printing, the tilt angle of the printing plate (14) is pre-adjusted according to the taper parameters of the cup to be printed. The transmission screw (40) rotates and drives the moving block (41) to move along the inclined transmission seat (39). The moving block (41) drives the adjustment plate (34) to rotate around its hinge point with the mounting plate (33). The auxiliary telescopic guide rod (43) synchronously extends and retracts on both sides of the adjustment plate (34) to provide auxiliary support. The limiting block (37) slides in the adjustment limiting groove (38) to guide and limit. The adjustment plate (34) drives the rotating disk (13) on its top and the fan-shaped printing plate (14) to tilt synchronously, so that the tilt angle of the printing plate (14) matches the taper of the outer surface of the cup. After the angle is adjusted to the correct position, the rotating disk (13) and the printing plate (14) maintain this tilt posture.

[0065] Feeding stage: The fifth drive source (48) drives the moving lead screw (46) to rotate. The moving lead screw (46) drives the mounting plate (33) to move along the slide rail (45) towards the cup body through the fixed block (47). The sliding cooperation between the slider (44) and the slide rail (45) ensures the linear motion accuracy of the mounting plate (33). The mounting plate (33) drives the entire printing press (8) and the rotating disk (13) to feed towards the cup body synchronously until the lower surface of the fan-shaped printing plate (14) contacts the outer surface of the cup body fitted on the conical block (32) to form a surface contact fit.

[0066] Printing stage: The roller unit (10) evenly spreads the ink in the ink fountain and transfers it to the first inclined transfer roller (15). The first drive assembly (16) drives the first inclined transfer roller (15) to rotate stably in the inclined roller fixing frame (17) and transfers the ink to the second inclined transfer roller (18) that abuts against it. The second drive source (20) drives the second conical roller (22) to rotate through the meshing of the first transmission gear (23) and the second transmission gear (24) to further homogenize the ink and transfer it to the upper surface of the fan-shaped printing plate (14). At the same time, the third drive source (30) drives the conical block (32) to rotate around its own axis, causing the cup body sleeved on the conical block (32) to rotate synchronously. The fan-shaped printing plate (14) transfers the ink to the outer surface of the cup body in an inclined posture that matches the taper of the cup body. The difference in linear velocity at each point along the axial direction is eliminated due to the matching of the inclination angle between the printing plate (14) and the surface of the cup body. The ink is evenly transferred to the surface of the cup body, completing a complete cup body surface printing.

[0067] Retraction stage: After printing is completed, the second drive source (20) and the third drive source (30) stop operating, and the fifth drive source (48) drives the moving screw (46) to rotate in the opposite direction. Through the fixed block (47), the mounting plate (33) is driven to move away from the cup body along the slide rail (45), so that the printing device (4) is separated from the cup body clamp (1), making room for the rotation of the indexing turntable (2). When the machine stops, the operator drives the rotating screw (26) to rotate through the first locking handle (28) and meshes with the first locking gear (25). The first locking block (27) and the rotating bearing (29) cooperate to lock the first locking gear (25), thereby locking the second cone roller (22) to prevent the roller from rotating unexpectedly in the stopped state, which would cause the ink distribution to become disordered.

[0068] Drying stage: The indexing turntable (2) continues to rotate one station, and the printed cup is transferred to the station corresponding to the drying device (5) arranged immediately after it. The drying device (5) performs immediate drying and curing treatment on the ink on the surface of the cup. Since the printing device (4) and the drying device (5) are set in groups and spaced apart, after drying, the indexing turntable (2) rotates one station again. If there is another set of printing devices (4) along the outer periphery of the indexing turntable (2), the cup will enter the next printing station. On the basis of the cured base color pattern, the next layer of pattern is superimposed and printed, and then enters the next drying device (5) again for drying. This cycle continues until all preset layers of superimposed printing are completed. Finally, the cup is transferred to the station corresponding to the unloading mechanism (6).

[0069] Material feeding stage: The feeding roller (62) rotates synchronously to guide the cup body from the feeding groove (61) between the feeding racks (60) to the V-shaped receiving conveyor belt (63). The receiving roller (64) limits the cup body in the conveying process to prevent it from deviating or tipping over. The cup body enters the V-shaped receiving plate (65) along the V-shaped receiving conveyor belt (63). The first telescopic cylinder (67) extends along the length of the V-shaped receiving plate (65). The second telescopic cylinder (68) extends vertically downward to lower the receiving baffle (69) to the back of the cup body. The first telescopic cylinder (67) retracts and drives the receiving baffle (69) to push the cup body along the V-shaped receiving plate (65) into the second storage rack (66). The second telescopic cylinder (68) retracts to reset the receiving baffle (69). After each telescopic cylinder is reset, it is ready to push the next cup body, thus completing the orderly export and stacking collection of the printed cup bodies.

[0070] The above stages are carried out in a cycle. The indexing turntable (2) rotates one station each time, and each station works at the same time. The feeding mechanism (3) conveys the unprinted cups to the feeding station. Each group of printing devices (4) performs superimposed printing of different layers on the cups of their respective printing stations. The drying device (5) arranged between each group of printing devices (4) dries and cures the ink printed at the previous station in real time. The unloading mechanism (6) exports and collects the cups that have completed all superimposed printing at the unloading station, realizing the continuous automated multi-layer superimposed printing production of cups.

[0071] The fan-shaped printing plate (14) is combined with the adjustable rotating disk (13) tilt angle adjustment mechanism to enable the printing plate (14) to transfer ink in an inclined posture adapted to the surface of the conical cup, eliminating the linear velocity difference of each point along the axial direction of the conical cup, ensuring the uniformity of ink transfer and the consistency of printing quality on the surface of the cup. The inclined roller fixing frame (17) stably rotates the first inclined transfer roller (15) to the mounting frame (9), ensuring the smooth operation of the inclined transfer roller in the inclined posture. The first locking mechanism mechanically locks the second inclined transfer roller (18) when the machine is stopped, preventing the roller from rotating unexpectedly when the equipment is stopped, which would cause the ink distribution to become disordered or the position to shift, ensuring the accuracy of the printing position when the equipment is restarted. The L-shaped third drive source (30) is combined with the shaft mounting block (31) and the conical block (32) to make the cup body It can form a surface contact with the fan-shaped printing plate (14), providing a structural basis for uniform ink transfer. The cooperation between the limiting block (37) and the adjusting limiting groove (38) and the setting of the auxiliary telescopic guide rod (43) ensure the movement stability and posture accuracy of the adjusting plate (34) during the tilting process. The sliding cooperation between the slider (44) and the slide rail (45) and the moving screw (46) driving the mounting plate (33) to move back and forth realize the smooth feeding and retraction of the printing device (4). The feeding groove (58) at the end of the feeding roller (53) contacts the cup body during rotation and pushes it away from the feeding hole (52), avoiding the cup body from getting stuck or deviating during the handover process. The unloading roller (62), the V-shaped receiving conveyor belt (63) and the receiving baffle (69) cooperate to realize the orderly export, limited conveying and stacking collection of the cup body after printing.

Claims

1. A cup body inclined plate printing device, comprising an indexing turntable for mounting a plurality of cup body clamps, wherein a number of clamps are respectively arranged along the outer periphery of the indexing turntable. Feeding mechanism: transports the unprinted cups to the cup clamps; Printing device: Prints on the outer circumference of the cup; Drying device: Used to dry the printed cups; The unloading mechanism transports and collects the printed cups. The printing apparatus includes a frame and a printing press mounted on top of the frame. The printing press is characterized by the following features: It includes opposing mounting frames, with several roller units arranged between the mounting frames. At the bottom of each roller unit, the mounting frames have a first inclined transfer roller assembly and a second inclined transfer roller assembly. A rotating disk is located at the bottom of the second inclined transfer roller assembly on the frame. The surface of the rotating disk has several fan-shaped printing plates. These printing plates abut against the bottom of the second inclined transfer roller assembly and the cup holder. The frame also includes an adjustment mechanism for adjusting the tilt angle of the rotating disk. The second inclined transfer roller assembly includes a second inclined transfer roller mounted on the mounting frame at the bottom of the first inclined transfer roller, abutting against the first inclined transfer roller. The mounting frame has a second driving assembly on one side of the second inclined transfer roller for driving its rotation and a first locking mechanism for locking the second inclined transfer roller when the machine stops. The drive assembly includes a second drive source mounted on a mounting frame located on one side of the second inclined transfer roller. The second inclined transfer roller includes a second roller shaft and a second conical roller. The drive end of the second drive source passes through the mounting frame and is provided with a first transmission gear at its end. The second roller shaft is provided with a second transmission gear on the side facing the first transmission gear. The meshing of the first transmission gear and the second transmission gear causes the second drive source to drive the second conical roller to rotate. The first locking mechanism can lock the second transmission gear to lock the second conical roller when the machine stops. The second roller shaft passes through the mounting frame. The first locking mechanism includes a first locking gear mounted on the end of the second roller shaft facing the second drive source. The mounting frame is provided with a rotating screw at the bottom of the first locking gear. The rotating screw meshes with the first locking gear. A first locking block and a first locking handle are mounted on the end of the rotating screw. A rotating bearing is provided between the rotating screw and the locking block.

2. The cup body inclined plate printing equipment according to claim 1, characterized in that: The first inclined transfer roller assembly includes a plurality of first inclined transfer rollers mounted on a mounting frame located at the bottom of the rolling unit. A first driving assembly for driving the first inclined transfer roller is provided on one side of the first inclined transfer roller. Inclined roller fixing frames are provided on both sides of the mounting frame of the first inclined transfer roller. The first inclined transfer roller is rotatably connected to the inclined roller fixing frames. The first driving assembly passes through the inclined roller fixing frames and is connected to any end of the first inclined transfer roller.

3. The cup body inclined plate printing equipment according to claim 1, characterized in that: The cup holder includes several L-shaped third drive sources disposed on the surface of the indexing turntable. The end of the third drive source is provided with a shaft mounting block for limiting the output end of the third drive source. The end of the output end of the third drive source is provided with a conical block for the cup to be fitted. The conical block is placed on the top of the printing plate to enable the cup to fit against the fan-shaped printing plate.

4. The cup body inclined plate printing equipment according to claim 1, characterized in that: The frame includes a vertically mounted mounting plate, the adjustment mechanism includes an adjustment plate with one end hinged to the mounting plate, the rotating disk is horizontally mounted on the top of the adjustment plate, the printing press is fixedly connected to the adjustment plate via a mounting arm, a driving component is provided on one side of the mounting plate to push the adjustment plate to tilt, a number of limiting blocks are provided on the surface of the mounting plate, a number of adjustment limiting grooves are provided on the adjustment plate, and the limiting blocks are placed in the adjustment limiting grooves.

5. The cup body inclined plate printing equipment according to claim 4, characterized in that: The driving component is a transmission screw, which includes a transmission seat, a transmission screw, and a moving block mounted on the transmission screw, all facing each other. The transmission screw passes through the transmission seat, which is inclined along the vertical direction of the mounting seat. One end of the transmission seat is mounted on an adjusting plate, and the other end is mounted on a mounting plate. The mounting plate and the adjusting plate are provided with hinge blocks at the transmission seat. The transmission seat is hinged to the mounting plate and the adjusting plate respectively through the hinge blocks. One side of the moving block is fixedly connected to the adjusting plate. One side of the mounting plate is provided with an auxiliary telescopic guide rod, one end of which is hinged to the adjusting plate, and the other end of which is hinged to the mounting plate.

6. The cup body inclined plate printing equipment according to claim 4, characterized in that: The mounting plate has several sliders at its bottom, and slide rails extend from the bottom of the sliders toward the cone block. The sliders are slidably connected to each other. A movable lead screw is provided on one side of the mounting plate. The movable lead screw is provided with a fixed block. The fixed block is fixedly connected to one side of the mounting plate. A fifth drive source is provided at the end of the movable lead screw, which can drive the movable lead screw to rotate. The fifth drive source can drive the mounting plate to reciprocate toward the cone block.

7. The cup body inclined plate printing equipment according to claim 1, characterized in that: The feeding mechanism includes a first storage rack disposed on the outer periphery of the indexing turntable. A feeding conveyor belt for transporting cups is provided on one side of the first storage rack. A receiving rack is provided on the side of the feeding conveyor belt facing the indexing turntable. A feeding hole is opened in the center of the receiving rack. Several feeding rollers are provided on the outer periphery of the feeding hole on the receiving rack. A fixing frame for mounting a fourth drive source is provided on one side of the receiving rack. A first synchronous wheel is provided on the side of the fourth drive source facing the indexing turntable. A second synchronous wheel is provided on the receiving rack. The first synchronous wheel, the second synchronous wheel, and the feeding rollers are connected by a synchronous belt. The feeding rollers are disposed on the side of the feeding hole facing the indexing turntable. A feeding groove for rotating and pushing the cup is opened at the end of the feeding rollers.

8. The cup body inclined plate printing equipment according to claim 1, characterized in that: The feeding mechanism includes a feeding platform located on one side of the indexing turntable. The surface of the feeding platform is provided with several feeding racks, which form a feeding groove for feeding the printed cup body. Several feeding rollers are vertically arranged on both sides of the feeding racks on the feeding platform. The feeding rollers are connected by a synchronous belt. A V-shaped receiving conveyor belt is provided on one side of the feeding platform. The top of the V-shaped receiving conveyor belt is provided with a receiving roller that limits the finished cup body. A V-shaped receiving plate is provided on the side of the V-shaped receiving conveyor belt away from the feeding platform. A second storage rack is provided on one side of the V-shaped receiving plate. A first telescopic cylinder extending along the length of the V-shaped receiving plate is provided on the top of the V-shaped receiving plate. A second telescopic cylinder is vertically installed at the end of the first telescopic cylinder. A receiving baffle is fixedly installed at the driving end of the second telescopic cylinder.

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