Two-way drying device for photo printer

Abstract

A kind of photo printer bidirectional drying device, including platform plate and feeding roller installed on rack, also including inner drying component and outer drying component;The leg of rack is equipped with L-shaped frame body, outer drying component is fixedly connected between two frame bodies, inner drying component is connected below feeding roller;The end of feeding roller axle is connected with rotating ring by bearing, both ends of inner drying component are equipped with swing arm, the upper end of swing arm is fixedly connected with the outer side of rotating ring;Inner drying component has swing function, and support roller is arranged in lower part, print medium is wound around support roller, print medium and inner drying component are integrally connected, the print medium of winding thickness variation can drive the whole inner drying device to swing, so that inner heating plate and print medium are always in the state of sticking, guarantee the uniformity of print medium drying;And print medium can be dried in the way of inner and outer coverage, more completely dried, and can effectively improve drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of photo printers, and in particular to a two-way drying device for photo printers. Background Technology

[0002] Photo printers are equipped with drying units, which are usually located at the end of the paper output path. The drying unit is a key auxiliary device to ensure the rapid drying of large-format prints and improve output quality. Its core function is to accelerate the curing process of the ink on the surface of the printing media through a controlled heat source and airflow circulation, avoiding problems such as smudging, bleeding, or image distortion caused by undried ink.

[0003] Currently, a drying device is usually fixedly installed at the end of the paper output path of a photo printer. Referring to the photo printer disclosed in application number CN2018201689759, the problem with this assembly structure is that the fixedly installed drying device cannot be adjusted to adapt to the increase or decrease of the thickness of the take-up roller, resulting in the phenomenon of localized sufficient drying and localized insufficient drying, poor drying uniformity, and the drying device only dries one side of the printing media, which is inefficient and restricts the printing efficiency, and needs to be improved. Utility Model Content

[0004] To solve the above problems, this utility model proposes a two-way drying device for a photo printer.

[0005] The technical solution of this utility model is as follows: a bidirectional drying device for a photo printer, including a platform plate installed on the frame, a feeding roller disposed on the outer side of the platform plate, the surface of the platform plate being densely covered with small holes for air suction, and an inner drying component and an outer drying component; an L-shaped frame is provided on the support legs of the frame, the outer drying component is fixedly connected between the two frames and is arranged at a certain angle, the inner drying component is connected below the feeding roller and located inside the outer drying component; the roller shafts at both ends of the feeding roller are connected to the frame through seated bearings, the seated bearings are quick-release bearings, and the ends of the roller shafts are connected to a rotating ring through the bearings; both ends of the inner drying component are provided with swing arms, the upper end of the swing arms being fixedly connected to the outer side of the rotating ring.

[0006] Preferably, in the internal drying assembly, an internal heating plate is located between the middle of the two swing arms, and a support roller rotates between the lower ends of the two swing arms. A gap is provided between the support roller and the internal heating plate, and the outer diameter of the support roller matches the width of the swing arm.

[0007] Preferably, the inner wall of the support roller is evenly distributed with a plurality of slots, and a heating tube is inserted into the slot, the length direction of the heating tube being consistent with the length direction of the support roller.

[0008] Preferably, the support roller is coaxially fitted with an inner tube, the support roller is made of aluminum alloy, and several connecting ribs are evenly distributed between the inner tube and the support roller, with the heating tube located in the cavity formed between the connecting ribs.

[0009] Preferably, the upper end of the swing arm is provided with a U-shaped notch, which is fitted onto the roller shaft, and the size of the U-shaped notch is larger than the size of the roller shaft.

[0010] Preferably, the end of the frame is provided with a limiting block corresponding to the end of the inner drying component. The limiting block is made of rubber and is used to provide elastic support for the inner drying component.

[0011] Preferably, the inner heating plate has a closed chamber on its back side, and a U-shaped groove plate is provided in the closed chamber. The groove of the U-shaped groove plate is fixedly connected to the back side of the inner heating plate, and an inner heating tube is provided in the U-shaped groove plate.

[0012] The beneficial technical effects of this utility model are: (1) The internal drying component of this utility model is connected to the roller shaft of the feeding roller through the swing arm, so that the internal drying component has a swing function. A support roller is set at the bottom. The printing medium is wound around the support roller and the printing medium and the internal drying component are connected as one unit. The printing medium with varying thickness can drive the entire internal drying device to swing, so that the internal heating plate and the printing medium are always in contact, ensuring the uniformity of the drying of the printing medium.

[0013] (2) The support roller of this utility model has heating tubes evenly arranged inside, and the support tube is divided into multiple chambers by setting inner tubes and connecting ribs. The heating tubes are distributed in each chamber, and the surface of the support roller generates a uniform heating temperature to assist in heating the printing medium that passes through, thereby improving the drying efficiency.

[0014] (3) The present invention provides an outer drying component on the outside of the inner drying component, and dries the printing medium by covering it inside and outside, which makes the drying more thorough and can effectively improve the drying efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model mounted on the frame; Figure 2 yes Figure 1 A magnified view of a portion of the image; Figure 3 This is a three-dimensional structural schematic diagram of the present invention; Figure 4 yes Figure 3 A magnified view of a portion of the image; Figure 5 yes Figure 3 A schematic diagram of the AA-direction cross-section structure; Figure 6 This is a three-dimensional structural diagram of the internal drying component.

[0016] In the diagram, 1. Frame, 11. Frame body, 12. Limiting block, 2. Platform plate, 3. Inner drying assembly, 31. Swing arm, 311. U-shaped notch, 32. Inner heating plate, 33. Enclosed chamber, 34. U-shaped groove plate, 35. Inner heating tube, 36. Support roller, 37. Inner tube body, 38. Connecting rib, 39. Heating tube body, 4. Outer drying assembly, 5. Feeding roller, 51. Bearing with seat, 52. Rotating ring, 53. Roller shaft, 6. Printing media. Detailed Implementation

[0017] Example 1, see appendix Figure 1-6 A bidirectional drying device for a photo printer includes a platform plate 2 mounted on a frame 1, a feeding roller 5 disposed on the outside of the platform plate 2, the surface of the feeding roller 5 being flush with the surface of the platform plate 2, and an inner drying component 3 and an outer drying component 4 arranged side by side, forming a gap between them for the printing medium 6 to pass through. An L-shaped frame 11 is provided on the legs of the frame 1, the outer drying component 4 is fixedly connected between the two frames 11, and the inner drying component 3 is connected below the feeding roller 5. After printing, the printing medium 6 enters the inner drying component 3 from the feeding roller 5. The roller shafts 53 at both ends of the feeding roller 5 are connected to the frame 1 via bearings 51, allowing them to rotate freely within the frame 1. A rotating ring 52 is connected to the end of the roller shaft 53 via a bearing. A swing arm 31 is provided at both ends of the inner drying component 3, the upper end of which is fixedly connected to the outer side of the rotating ring. The inner drying component 3 can rotate on the two rotating rings 52 via the swing arms 31, realizing the overall swing of the inner drying component 3. The printing media 6 is dried by covering it from both inside and outside, resulting in a more thorough drying process and effectively improving drying efficiency.

[0018] The upper end of the swing arm 31 is provided with a U-shaped notch 311, which is fitted onto the roller 53 to avoid conflict between the swing arm and the roller and ensure that the swing arm 31 swings normally.

[0019] The end of the frame 1 is provided with a limiting block 12 corresponding to the end of the inner drying component 3. The limiting block 12 restricts the swing range of the inner drying component 3, and the limiting block has a certain elasticity to avoid damage to the inner drying component by impact force.

[0020] Example 2, see appendix Figure 5 This embodiment is basically the same as the first embodiment, and the similarities will not be repeated. The difference is that the inner heating plate 32 has a closed chamber 33 on the back, and a U-shaped groove plate 34 is provided in the closed chamber 33, and an inner heating tube 35 is provided in the U-shaped groove plate.

[0021] A primary chamber is formed between the U-shaped groove plate 34 and the inner heating plate 32. The inner heating tube 35 generates heat in the primary chamber, heating the middle area of ​​the inner heating plate 32. The large closed chamber 33 on the back of the inner heating plate 32 is a secondary chamber, used to lock in the heat emitted by the U-shaped groove plate 34 and heat the inner heating plate 32 as a whole. Through two-stage heating, the inner heating plate 32 generates a sufficient and uniform drying temperature.

[0022] Example 3, see appendix Figure 3-5 This embodiment is basically the same as the first embodiment, and the similarities will not be repeated. The difference is that: the inner heating plate 32 is located between the middle of the two swing arms 31 in the inner drying assembly 3. The surface of the inner heating plate is a smooth surface, which can effectively reduce the contact friction of the printing medium 6. A support roller 36 rotates between the lower ends of the two swing arms 31, and there is a gap between the support roller 36 and the inner heating plate 32.

[0023] The inner wall of the support roller 36 is evenly distributed with several slots, and a heating tube 39 is installed in the slot. The support roller 36 is heated through the heating tube to generate a heating temperature.

[0024] The support roller 36 is coaxially fitted with an inner tube 37. Several connecting ribs 38 are evenly distributed between the inner tube and the support roller. The heating tube is located in the cavity formed between the connecting ribs 38. The heating tube generates heat in an independent cavity. Each independent cavity heats the support roller 36 synchronously, so that the surface of the support roller 36 generates a uniform heating temperature, which provides auxiliary heating for the bypassed printing medium 6 and improves the drying efficiency.

[0025] The principle of this embodiment is as follows: After the printing medium 6 comes down from the feeding roller 5, it passes around the support roller 36 through the gap and adheres the printing medium 6 to the surface of the inner heating plate 32. The printing medium 6 and the inner drying assembly 3 are connected as a whole. The printing medium 6 with varying thickness can drive the entire inner drying device to swing accordingly, so that the inner heating plate and the printing medium are always in a close contact state, ensuring the uniformity of the drying of the printing medium.

Claims

1. A bidirectional drying device for a photo printer, comprising a platform plate mounted on a frame and a feeding roller disposed on the outer side of the platform plate, characterized in that: It also includes an internal drying unit and an external drying unit; The frame has an L-shaped frame on its legs. The outer drying assembly is fixedly connected between the two frames, and the inner drying assembly is connected below the feeding roller. The rollers at both ends of the feeding roller are connected to the frame via bearings with seats. The ends of the rollers are connected to rotating rings via bearings. Both ends of the inner drying assembly are equipped with swing arms, and the upper ends of the swing arms are fixedly connected to the outer side of the rotating rings.

2. The bidirectional drying device for a photo printer according to claim 1, characterized in that: The inner heating plate is located between the middle of the two swing arms in the inner drying assembly, and a support roller rotates between the lower ends of the two swing arms. There is a gap between the support roller and the inner heating plate.

3. The bidirectional drying device for a photo printer according to claim 2, characterized in that: The inner wall of the support roller is evenly distributed with several slots, and heating tubes are installed in the slots.

4. The bidirectional drying device for a photo printer according to claim 3, characterized in that: The support roller is coaxially fitted with an inner tube, and several connecting ribs are evenly distributed between the inner tube and the support roller. The heating tube is located in the cavity formed between the connecting ribs.

5. The bidirectional drying device for a photo printer according to claim 2, characterized in that: The inner heating plate has a closed chamber on its back, and a U-shaped groove plate is provided in the closed chamber, with an inner heating tube inside the U-shaped groove plate.

6. The bidirectional drying device for a photo printer according to claim 1, characterized in that: The upper end of the swing arm is provided with a U-shaped notch, which fits onto the roller shaft.

7. The bidirectional drying device for a photo printer according to claim 1, characterized in that: The end of the frame is provided with a limiting block corresponding to the end of the inner drying component.

Images