Curing structure with double lamp tubes and single lamp box

Abstract

The utility model discloses a double-lamp-tube single-lamp-box curing structure which comprises a lamp box and a sealing cover with the upper end capable of swinging, and a curing drying channel, a pneumatic spring and a buckle are arranged between the sealing cover and the lamp box. A drawable drawer is arranged in the lamp box, parallel double lamp holders and a UV curing lamp tube are arranged on the upper portion of the drawer, arc-shaped shading plates capable of being folded / opened are arranged on the two sides of the lamp tube, and a corresponding air draft mechanism is arranged below the drawer. The shading plate is opened and closed by driving a swing plate through a driving plate with a transverse limiting groove and a bearing by an air cylinder. An air chamber and an air outlet are formed in the sealing cover; and the side wall air inlet is connected with the oven air outlet. An upper opening of the lamp box is provided with a lamp frame with a glass tube, a lamp tube is arranged below the glass tube, and the outer end of the drawer is connected with a handle sealing plate. According to the utility model, the UV irradiation capability and the curing efficiency are improved, the UV radiation protection is improved, the maintenance is convenient, and the heat dissipation and curing uniformity can be optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment technical field especially relates to a double lamp tube single lamp box solidification structure for printing material ink solidification. BACKGROUND

[0002] In the printing industry, printing materials are colored by printing machines, and then the ink is solidified by UV curing lamps. The ultraviolet radiation emitted by the UV curing lamp has potential hazards to the skin, eyes and respiratory system of the on-site workers. At the same time, the existing lamp box usually has a single lamp tube for solidification, and its irradiation capacity and solidification efficiency are limited, which cannot meet the speed-up requirements of existing printing equipment, resulting in low production efficiency. In addition, the light shielding protection measures of the existing solidification equipment may not be perfect, or it is inconvenient to operate when the internal lamp tube needs to be maintained. SUMMARY

[0003] The utility model aims at overcoming the deficiency of prior art, provides a double lamp tube single lamp box solidification structure to solve the problem of insufficient irradiation capacity of the existing UV curing lamp, difficult to meet the speed-up requirements of the printing equipment, and improve the UV radiation protection effect, and facilitate the maintenance of the internal lamp tube.

[0004] To achieve the above-mentioned purpose, the utility model provides a double lamp tube single lamp box solidification structure, including the lamp box, the swingable cover is arranged on one side of the upper end opening of the lamp box, the cover can block the upper opening of the lamp box, and the cover and the upper opening of the lamp box are left with a curing and drying channel; The cover and the lamp box are provided with a pneumatic spring for driving the cover to open and a buckle for locking the cover, after the buckle is unlocked, the cover and the lamp box can open the upper opening of the lamp box under the action of the pneumatic spring.

[0005] The lamp box is provided with a drawer that can be pulled out, the upper part of the drawer is provided with two lamp holders arranged in parallel, and each lamp holder is provided with a UV curing lamp tube; Each UV curing lamp tube is provided with an arc-shaped light shield on both sides, and the two light shields can be folded or opened; The lower part of the drawer is provided with an air extraction mechanism corresponding to the lamp holder, the air extraction mechanism comprises an air extraction box in communication with the bottom surface of the drawer, the bottom surface of the drawer is provided with a ventilation hole, the air extraction box is provided with an air extraction port towards the side wall of the lamp box, and a pipe joint corresponding to the air extraction port and in communication with the air extraction port is installed on the side wall of the lamp box, and the pipe joint is connected with the air extractor through an air pipe.

[0006] A driving mechanism is arranged corresponding to the light shielding plates, the driving mechanism comprises end shafts arranged on both sides of the light shielding plates, two end shafts on one side are extended to form rotating shafts, the rotating shafts are respectively extended out of the lamp holder and connected with swing plates, the swing plates are symmetrically arranged, the swing plates are respectively connected with inserting shafts at the other ends, bearings are arranged on the inserting shafts, a cylinder is mounted on the outer wall of the lamp holder, a driving plate is connected with the piston rod of the cylinder, transverse limiting grooves are arranged on the driving plate, the two bearings are arranged in the transverse limiting grooves, the height of the transverse limiting grooves is matched with the bearings, and the length of the transverse limiting grooves is greater than or equal to three times of the diameter of the bearings, so that the two bearings can slide transversely in the transverse limiting grooves; the cylinder drives the transverse limiting grooves to move through the driving plate, and then drives the bearings to move transversely in the transverse limiting grooves, the transverse movement of the bearings drives the two swing plates to swing in opposite directions, so that the two light shielding plates are folded or opened; in the opened state, the light of the UV curing lamp can pass through the glass tubes arranged subsequently and irradiate to the curing and drying channel; in the folded state, the light of the UV curing lamp can be shielded to avoid light radiation.

[0007] A partition plate is mounted in the cover, an air chamber is formed between the partition plate and the inner cavity of the cover, air outlet holes are uniformly arranged on the partition plate and face the curing and drying channel, an air inlet is arranged on the side wall of the cover, the air inlet is communicated with the air outlet of the oven through an air pipe, and the air inlet of the oven is connected with the air outlet of the air draught fan.

[0008] Lamp frames are further arranged at the upper openings of the lamp boxes, glass tubes are arranged on the lamp frames and sequentially arranged and contacted with each other, the glass tubes are arranged below the curing and drying channel and arranged along the curing and drying channel, and the UV curing lamps are arranged below the glass tubes.

[0009] Handles are arranged on the sealing plates, when the drawer is pushed into the lamp box, the sealing plates become the side walls of the lamp box.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The curing efficiency is improved, and the equipment speed is adapted: by arranging two UV curing lamps in parallel in a single lamp box, the UV irradiation capacity is significantly enhanced, the ink curing speed and efficiency are improved, and the demand of the existing printing equipment for speed increase can be met.

[0012] 2. The safety protection is enhanced: the double-arc-shaped light shielding plates are designed to be foldable / openable, the light shielding plates can be opened during curing operation to fully utilize the light sources of the double lamps, the light shielding plates can be folded during non-operation or maintenance to effectively shield the UV radiation and reduce the harm to the workers; meanwhile, the cover cooperates with the air chamber and the hot air circulation (or other air flow) from the oven, which can help to further isolate the UV radiation or assist in heat dissipation and exhaust of waste gas.

[0013] 3. Optimized heat dissipation and environmental protection: Each lamp tube has an independent exhaust mechanism, which can remove the heat generated during lamp tube operation in a timely manner, ensure stable lamp tube operation, extend service life, and effectively eliminate possible harmful gases or odors.

[0014] 4. Easy to maintain and clean: The light box is equipped with a pull-out drawer structure, which makes it extremely convenient to replace and maintain the internal components such as lamp holders and lamp tubes without disassembling the entire light box, reducing maintenance difficulty and time costs.

[0015] 5. Improve curing uniformity: The glass tube (such as quartz glass) below the UV curing lamp can transmit ultraviolet light and also play a certain role in homogenizing the light. Together with the adjustable light shield, it helps to make the UV light shine more evenly on the printing material in the curing and drying channel, thus improving the curing quality.

[0016] 6. High structural integration and good space utilization: The dual lamp tubes, light shielding mechanism, ventilation mechanism, openable and closable cover and hot air auxiliary structure are integrated into a single light box, which is compact and reasonably designed.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a perspective view of a specific embodiment of the present utility model;

[0019] Figure 2 This is a partial perspective view of a specific embodiment of the present utility model;

[0020] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0021] Figure 4 This is a cross-sectional view of a specific embodiment of the present utility model;

[0022] Figure 5 This is a longitudinal sectional view of a specific embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached diagram: 1-Light box; 2-Cover; 3-Curing and drying channel; 4-Pneumatic spring; 5-Snap fastener; 6-Drawer; 7-Lamp holder; 8-UV curing lamp tube; 9-Light shield; 10-Exhaust mechanism; 11-Exhaust box; 12-Ventilation hole; 13-Exhaust outlet; 14-Pipe connector; 17-End shaft; 19-Rotating shaft; 20-Swing plate; 21-Insertion shaft; 22-Bearing; 23-Cylinder; 24-Piston rod; 25-Drive plate; 26-Horizontal limiting groove; 27-Partition plate; 28-Air chamber; 29-Air outlet; 30-Air inlet; 32-Lamp frame; 33-Glass tube; 34-Sealing plate; 35-Handle. Detailed Implementation

[0024] The present invention will be described in detail below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention.

[0025] like Figure 1 — Figure 5 As shown, this embodiment provides a dual-lamp single-lamp box curing structure, which is mainly used for the rapid curing of UV inks on the surface of printed materials on the printing production line.

[0026] Overall Structure: The structure includes a rectangular lightbox 1 with an elongated opening at its upper end. A hinged, swingable cover 2 is mounted on one side of this opening via a hinge (not shown in the figure, a conventional connection). The size and shape of the cover 2 match the upper opening of the lightbox 1. When closed, it tightly seals the upper opening of the lightbox 1, leaving only a narrow curing and drying channel 3 between the corresponding edges of the cover 2 and the upper opening of the lightbox 1, allowing the printed material to pass through from below and be cured by UV irradiation. A pneumatic spring 4 (e.g., two, located on either side of the opening) and a latch 5 are provided between the cover 2 and the lightbox 1. The latch 5 can be a common push-button or rotary type. Its locking blocks and latches are normally locked, firmly fixing the cover 2 to the lightbox 1. When the cover 2 needs to be opened for maintenance, the latch 5 is operated to disengage its locking blocks and latches. At this time, the cover 2 opens upwards under the elastic force of the pneumatic spring 4, allowing the upper opening of the lightbox 1 to open.

[0027] Internal core structure and drawer-style design: A drawer 6, which can be pulled out along the length of the light box 1, is installed inside the light box 1. A sealing plate 34 is fixedly connected to the outer end of the drawer 6, and a handle 35 is provided on the sealing plate 34 for easy pulling. When the drawer 6 is fully pushed into the light box 1, the sealing plate 34 precisely closes one side opening of the light box 1, ensuring the airtightness and integrity of the light box 1. Two parallel lamp holders 7 are fixedly installed on the upper part of the drawer 6, each lamp holder 7 containing a UV curing lamp tube 8 (such as a high-pressure mercury lamp or an LED UV lamp tube). To enhance the utilization efficiency of UV light and protect operators, each UV curing lamp tube 8 has a light-shielding plate 9 on both sides that can swing in an arc. The two light-shielding plates 9 form a bracket-like or openable arc-shaped cover, which can close to enclose the lamp tube 8 or open to allow most of the light from the lamp tube 8 to pass through.

[0028] The driving mechanism of the light shielding plate: the two ends of the two light shielding plates 9 are rotatably installed on the lamp holder 7 through end shafts 17. One of the end shafts is extended to form a rotating shaft 19, and the two rotating shafts 19 extend outward from the side wall of the lamp holder 7 by a certain length and are fixedly connected with the inner ends of a swing plate 20. The two swing plates 20 are symmetrically arranged outside the lamp holder 7. The outer end of each swing plate 20 is perpendicularly connected with a plug shaft 21, and the plug shaft 21 is sleeved with a bearing 22 (such as a deep groove ball bearing). A small air cylinder 23 (or two small air cylinders, depending on the driving force requirement) is fixedly installed on the outer wall of the lamp holder 7, and the piston rod 24 of the air cylinder 23 is connected with a driving plate 25. The driving plate 25 is processed with a transversely extending transverse limiting groove 26, the height of the transverse limiting groove 26 is matched with the outer diameter of the bearing 22, so that the bearing 22 can be smoothly accommodated, and the length is greater than or equal to three times the diameter of the bearing 22, so as to ensure that the bearing 22 has a certain transverse movement stroke in the groove. In the initial state, if the two bearings 22 are located in the middle position of the transverse limiting groove 26, the two swing plates 20 may be in the middle position. When the piston rod 24 of the air cylinder 23 is extended or retracted, the driving plate 25 and the transverse limiting groove 26 thereon will move together. Since the bearing 22 is limited in the transverse limiting groove 26 and can only slide along the length direction of the groove (i.e. transversely), but cannot move vertically with the driving plate 25, therefore, the movement of the driving plate 25 will push the bearing 22 to slide transversely in the groove through the inner wall of the transverse limiting groove 26. Since the two swing plates 20 are symmetrically arranged, when one bearing 22 slides to the left in the transverse limiting groove 26, the other bearing 22 slides to the right (and vice versa). The opposite transverse movement is converted into opposite rotating driving of the two rotating shafts through the plug shaft 21 and the swing plate 20, so that the two light shielding plates 9 realize the action of approaching and closing or moving away and opening. When the light shielding plate 9 is opened, the ultraviolet light emitted by the UV curing lamp 8 can be fully irradiated; when the light shielding plate 9 is closed, the leakage of ultraviolet light can be effectively blocked to protect the safety of personnel.

[0029] Exhaust mechanism: Directly below the drawer 6, two exhaust mechanisms 10 are provided, one for each of the two lamp holders 7. Each exhaust mechanism 10 comprises an exhaust box 11, the upper end of which is in communication with the bottom surface of the drawer 6. The bottom surface of the drawer 6 (corresponding to the area below the lamp holders 7 and the lamp tubes 8) is provided with ventilation holes 12, so that the heat and possibly volatile gases generated by the lamp tubes 8 can enter the exhaust box 11 through the ventilation holes 12. An exhaust port 13 is formed on the surface of the exhaust box 11 facing a side wall of the lamp box 1 (for example, the side wall opposite the cover 2). A pipe joint 14 is fixedly installed on the side wall of the lamp box 1, corresponding to each of the two exhaust ports 13 and in internal communication with them. The other end of the pipe joint 14 is connected to the air inlet of a common exhaust fan through a flexible air pipe. When the exhaust fan is working, a negative pressure can be formed in the exhaust box 11, so that the heat and waste gas generated by the lamp tubes 8 can be promptly removed through the ventilation holes 12, the exhaust box 11, the exhaust port 13, the pipe joint 14, the air pipe and discharged outside or purified, ensuring that the lamp tubes 8 work in a suitable temperature environment, prolonging their service life, and improving the working environment.

[0030] Cover and auxiliary air flow structure: A horizontal partition 27 is installed in the internal cavity of the cover 2, which divides the internal cavity of the cover 2 into an upper air chamber 28 and a lower space opposite the curing and drying channel 3. The partition 27 is uniformly provided with a plurality of small air outlets 29, which are directly opposite the curing and drying channel 3 below. An air inlet 30 is provided on the side wall of the cover 2 (for example, near one end of the oven), which is in communication with the air outlet of the oven on the printing production line through an air pipe. The air inlet of the oven is connected to the air outlet of the above-mentioned exhaust fan (or connected to another device that provides clean hot air, which is set according to the process requirements). In this way, the gas discharged by the exhaust fan (or the hot air discharged by the oven) can enter the air chamber 28 of the cover 2 through the air inlet 30, and then uniformly blow to the curing and drying channel 3 through the air outlets 29 on the partition 27. This air flow can play multiple auxiliary roles: (1) helping to disperse a small amount of volatile organic compounds (VOCs) generated during the curing process; (2) if hot air is introduced, it can assist in improving the curing efficiency or pre-drying the printed material; (3) further blocking the direct leakage of UV radiation, because the high-speed air flow itself can also attenuate part of the radiation.

[0031] Lamp frame and glass tube: at the upper opening of the light box 1, a lamp frame 32 is fixedly installed around the lower edge of the curing drying channel 3. A plurality of glass tubes 33 (preferably quartz glass tubes with high light transmittance) are arranged in sequence and in close contact with each other on the lamp frame 32. These glass tubes 33 are arranged along the length direction of the curing drying channel 3, forming a light reflection area. The UV curing lamp tube 8 is arranged directly below the glass tubes 33. The main functions of the glass tubes 33 are: (1) physically protecting the UV curing lamp tube 8 from dust pollution and accidental collision; (2) quartz glass has excellent transmittance to UV light and almost no absorption of UV energy, which can ensure the concentration of UV light and improve the energy; (3) can make the UV light more uniformly concentrated and transmitted, and improve the uniformity of the curing quality.

[0032] Work flow: when the printed material needs to pass from below the light box 1 for UV curing, first ensure that the light shield 9 is in the open state (which can be realized by controlling the air cylinder 23 to ventilate), and the buckle 5 is in the unlocked state (or remains locked, because the cover 2 has been opened under the action of the pneumatic spring, according to the actual assembly, if the cover 2 is normally closed, the buckle 5 needs to be unlocked first and the cover 2 is opened to an angle that does not affect the material passing or fully opened by means of a pneumatic spring or manually). Start the UV curing lamp tube 8 and the air extractor. The printed material enters from one end of the curing drying channel 3, passes above the UV curing lamp tube 8 (transmits through the glass tubes 33) to receive high-intensity UV irradiation, and the ink is quickly cured. At the same time, the air extractor draws away heat and waste gas through the air extraction structure 10. The air flow from the oven and guided by the air extractor blows from the air outlet hole 29 of the cover 2 to the curing drying channel 3, assisting the curing process. After curing is completed, the printed material is output from the other end of the channel. When the equipment is stopped or needs to be maintained and cleaned, the air cylinder 23 can be controlled to make the light shield 9 fold, then the buckle 5 is locked, and the cover 2 is closed to prevent UV radiation leakage.

[0033] The above only describes the preferred embodiments of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dual lamp single lamp house curing structure, characterized by, The utility model relates to a lamp box, which comprises a lamp box (1), a swingable cover (2) arranged on one side of the upper opening of the lamp box (1), the cover (2) can block the upper opening of the lamp box (1), and a curing and drying channel (3) is left between the cover (2) and the upper opening of the lamp box (1). A drawer (6) is arranged in the lamp box (1), the upper part of the drawer (6) is provided with two lamp holders (7) arranged in parallel, a UV curing lamp (8) is arranged in each lamp holder (7), arc-shaped light shielding plates (9) are arranged on the two sides of each UV curing lamp (8), and the two light shielding plates (9) can be folded or opened. The two light shielding plates (9) are folded or opened through a driving mechanism.

2. The dual lamp single lamp house curing structure according to claim 1, wherein, The driving mechanism comprises end shafts (17) arranged on the two sides of the light shielding plates, the two end shafts (17) on one side are extended to form rotating shafts (19), the two rotating shafts (19) extend out of the lamp holders and are connected with swing plates (20), the two swing plates (20) are symmetrically arranged, the other ends of the two swing plates (20) are connected with plug shafts (21), bearings (22) are arranged on the plug shafts (21), a cylinder (23) is arranged on the outer wall of the lamp holder (7), a driving plate (25) is connected to the piston rod (24) of the cylinder (23), transverse limiting grooves (26) are arranged on the driving plate (25), the two bearings (22) are arranged in the transverse limiting grooves (26), the height of the transverse limiting grooves (26) is matched with the bearings (22), and the length of the transverse limiting grooves (26) is greater than or equal to three times the diameter of the bearings (22), so that the two bearings (22) can move transversely in the transverse limiting grooves (26), the cylinder (23) drives the transverse limiting grooves (26) to move through the driving plate (25), and then the bearings (22) move transversely in the transverse limiting grooves (26), so that the two swing plates (20) swing in opposite directions, and the two light shielding plates (9) are folded or opened.

3. The dual lamp single lamp house curing structure according to claim 1, wherein, A pneumatic spring (4) for driving the cover (2) to open and a buckle (5) for locking the cover (2) are arranged between the cover (2) and the lamp box (1), after the buckle (5) is unlocked, the cover (2) and the lamp box (1) can open the upper opening of the lamp box (1) under the action of the pneumatic spring (4).

4. The dual lamp single lamp house curing structure according to claim 1, wherein, The air suction mechanism (10) comprises an air suction box (11) in communication with the bottom surface of the drawer (6), the bottom surface of the drawer (6) is provided with a ventilation hole (12), the air suction box (11) is provided with an air suction port (13) on the side wall facing the lamp box (1), a pipe joint (14) corresponding to the air suction port (13) and in communication with the air suction port (13) is arranged on the side wall of the lamp box (1), and the pipe joint (14) is connected with an air suction machine through an air pipe.

5. The dual lamp single lamp house curing structure according to claim 1, wherein, A partition (27) is arranged in the cover (2), and a gas chamber (28) is formed between the partition (27) and the inner cavity of the cover (2), the partition (27) is provided with uniformly distributed air outlet holes (29) facing the curing and drying channel (3); an air inlet (30) is arranged on the side wall of the cover (2), the air inlet (30) is communicated with the air outlet of the oven through an air pipe, and the air inlet of the oven is connected with the air outlet of an air extractor.

6. The dual lamp single tank curing structure of claim 1, wherein, A lamp frame (32) is further arranged at the upper opening of the lamp box (1), the lamp frame (32) is provided with glass tubes (33) arranged in sequence and in contact with each other, the glass tubes (33) are arranged below the curing and drying channel (3) and arranged along the curing and drying channel (3), and the UV curing lamp tube (8) is arranged below the glass tubes (33).

7. The dual lamp single tank curing structure of claim 1, wherein, The outer end of the drawer (6) is further connected with a cover plate (34), the cover plate (34) is provided with a handle (35), and when the drawer (6) is pushed into the lamp box (1), the cover plate (34) becomes the side wall of the lamp box (1).

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