Page turning type drying machine and stained paper drying method

Abstract

The invention discloses a page turning type drying machine and a stained paper drying method. The page turning type drying machine comprises a frame body, a chain row mechanism which is arranged on the frame body and can move circularly and a plurality of paper frames which are fixedly installed on the chain row mechanism, and clamps are arranged on the paper frames; one end of the frame body is a machine head end, the other end of the frame body is a machine tail end, the paper frame at the machine head end overturns upwards along with the chain row mechanism, and the paper frame at the machine tail end overturns downwards along with the chain row mechanism; a driving motor is arranged at the machine head end of the frame body, and the output end of the driving motor is connected with a driving shaft of the chain row mechanism; an annular working part is coaxially arranged on the driving shaft, and the working part synchronously rotating with the driving shaft is provided with a working curved surface which can extrude the tail end of the clamp so that the clamp can be opened and smoothly transited to be closed; when the clamp is in contact with the working part, the clamp and the working part are kept relatively static; a maintaining member is provided on the downstream side of the working member. The drying quality and the yield of the printed matter are greatly improved.

Description

Technical Field

[0001] The invention relates to a page-turning dryer and a method for drying flower paper, belongs to the field of drying equipment, and is mainly suitable for drying flower paper. Background Art

[0002] Decal paper is a craft paper with a printed pattern on the surface of the base paper. According to the nature of the paper, it is divided into three categories: ceramic decal paper (polyvinyl butyral film paper), underglaze decal paper, and water transfer decal paper. Because decal paper is in a wet state during screen printing, it needs to be dried after screen printing.

[0003] At present, the most common screen printing dryers on the market are mainly page-turning dryers. The decals printed by the screen printing machine are sent into the page-turning dryer through a bridge belt, and enter the next process after being dried in the drying box. In order to avoid the flower surface of the decal paper from contacting the paper clip in the drying box, the decal surface will maintain an upward tilt. However, the decal paper needs to be flipped about 180 degrees at the tail of the dryer, which will cause the decal surface to experience a flipping process from the flower surface facing up to the flower surface facing down. At the same time, in order to prevent the decal paper from sliding relative to the paper rack, a clamp must be installed on the crossbar of the paper rack.

[0004] After long-term observation, the inventor found that due to the continuous sliding friction of the clamp along the arc-shaped part of the opener, metal wear debris is generated on the contact surface. After free fall, the metal wear debris directly contaminates the surface of the printed matter below, causing the printed matter to be contaminated and the defective rate of printing to increase significantly. At the same time, the long-term friction of the clamp on the opener causes the clamp to be worn and damaged. After a period of use, the paper holder needs to be replaced, which will increase the cost of use. Summary of the invention

[0005] The present invention aims to solve the above technical problems and provide a page-turning dryer and a method for drying flower paper, which can prevent printed products from being contaminated during the process of changing from flower side facing up to flower side facing down.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: A page-turning dryer comprises a frame, a chain mechanism arranged on the frame and capable of circulating and moving, and a plurality of paper racks fixedly mounted on the chain mechanism, wherein a clamp is arranged on the paper rack; one end of the frame is a head end, and the other end is a tail end, the paper rack at the head end flips upward along with the chain mechanism, and the paper rack at the tail end flips downward along with the chain mechanism; a driving motor is arranged at the head end of the frame, and the output end of the driving motor is connected to the driving shaft of the chain mechanism; a working component is coaxially arranged on the driving shaft, and the working component which rotates synchronously with the driving shaft has a working curved surface which can squeeze the tail end of the clamp so that the clamp is opened and smoothly transitions to a closed state; when the clamp contacts the working component, the clamp and the working component remain relatively stationary; a maintaining component is arranged on the downstream side of the working component.

[0007] Therefore, when the clamp moves into the working range of the working part under the drive of the chain mechanism, the working surface on the periphery of the working part will exert radial extrusion force on the tail end of the clamp, so that the clamp can be stably opened; because the working part rotates synchronously with the driving shaft, its angular velocity is strictly matched with the linear velocity of the clamp, ensuring that the clamp always maintains a point contact state with the working surface during the flipping process, and the contact position between the clamp and the working part remains unchanged; therefore, this movement synchronization not only eliminates the relative sliding between the clamp and the working surface, significantly reducing friction loss, but also effectively avoids debris contamination caused by friction, thereby ensuring the cleanliness of the printed surface and improving the printing quality. In addition, the maintenance component can prevent the clamp from closing quickly when it is separated from the working part. This design also extends the service life of the clamp, reduces the frequency of equipment maintenance, and improves the operating efficiency of the dryer.

[0008] According to the embodiments of the present invention, the present invention can be further optimized. The following is the technical solution formed after optimization: In order to make the closing process of the clamp smoother, in a specific embodiment, the maintaining component is arranged on the downstream side of the working component through a mounting rod arranged on the frame, and the maintaining component does not contact the working curved surface.

[0009] In a specific embodiment, the maintaining component is arranged to be tilted downward along the moving direction of the paper rack and the tilt angle is 2°-2.4°.

[0010] In a specific embodiment, one end of the maintaining component extends to the top of the working curved surface, and the other end extends downwardly and obliquely toward the downstream side of the driving shaft; when the tail end of the clamp runs above the maintaining component, it maintains contact with the upper surface of the maintaining component until the clamp is closed.

[0011] As a result, the clamp can smoothly transition to the working range of the holding component after it is separated from the working component. Since the holding component is arranged in an inclined manner, the extrusion force on the tail end of the clamp during its movement along the holding component is gradually reduced. This progressive force transmission mechanism ensures that the clamp opening can be smoothly and continuously narrowed until it reaches a fully closed state when it is completely separated from the holding component; it avoids the rapid closing of the clamp, thereby improving the printing quality.

[0012] In another embodiment, the present invention further provides another structure of a maintaining component. Specifically, the maintaining component is horizontally arranged, and the upper surface of the maintaining component does not exceed the top of the working component.

[0013] In a specific embodiment, a clearance groove for accommodating the working component is formed at one end of the maintaining component facing the working component.

[0014] In order to facilitate the disassembly of the working component, in a specific embodiment, a mounting hole extending along the radial direction of the working component is opened on the outer peripheral surface of the working component, a positioning hole matching the mounting hole is opened on the driving shaft, and the working component and the driving shaft are installed and fixed by fasteners.

[0015] In a specific embodiment, the radius R of the working curved surface is 107 mm-109 mm.

[0016] In a specific embodiment, the width of the working curved surface extending to both sides is 26 mm-28 mm.

[0017] In a specific embodiment, the working component is a ring sleeved on the driving shaft.

[0018] Based on the same inventive concept, the present invention also provides a method for drying flower paper using the above-mentioned page-turning dryer, comprising the following steps: S1. The flower paper enters the working range of the dryer at the head end of the dryer; S2. At the head end of the dryer, the clamp on the paper rack flipped upward by the chain mechanism is squeezed by the working part to keep it open, and the paper rack lifts the flower paper and the flower paper enters the working range of the clamp; S3. The paper rack continues to move with the chain mechanism, and the paper rack leaves the working range of the working component and enters the working range of the maintaining component. The clamp gradually closes on the maintaining component and fixes the flower paper on the paper rack; S4. The flower paper continues to move on the paper rack along with the chain mechanism and is dried on the dryer; S5. The paper rack turns downward at the tail end of the dryer and enters the working range of the working parts along with the chain mechanism; S6. The working part opens the clamp on the paper rack, and the clamp releases the fixation of the flower paper. When the paper rack flips upward, the flower paper slides along the paper rack to the paper receiving device.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1) The opener of the page-turning dryer of the present invention improves the structure of the working part. The angular velocity of the working part is the same as the linear velocity of the clamp, which ensures that the clamp always maintains a point contact state with the working surface during the turning process, significantly reduces friction loss, and effectively avoids debris contamination caused by friction, thereby ensuring the cleanliness of the printed surface and improving the printing quality.

[0020] 2) The maintaining component of the page-turning dryer of the present invention is tilted, and the progressive force transmission mechanism ensures that the opening of the clamp can be narrowed smoothly and continuously until it is completely separated from the maintaining component and reaches a fully closed state, thereby ensuring the stability and accuracy of the opening and closing action of the clamp, thereby greatly improving the drying quality and yield rate of printed products.

[0021] 3) The page-turning dryer of the present invention effectively avoids the sudden closing phenomenon commonly seen in traditional opener systems, which not only significantly improves the smoothness of the clamp movement, but more importantly, this progressive closing mechanism greatly improves the accuracy and quality of printing operations, especially showing significant advantages in high-precision printing applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an isometric structural schematic diagram of the head end of the flip-type dryer of the present invention; Figure 2 It is a partial enlarged view of the mouth opener of the present invention; Figure 3 This is a schematic diagram of the working process of the mouth opener according to Embodiment 1 of the present invention; Figure 4 It is a schematic diagram of the working process of the mouth opener of Example 2 of the present invention.

[0023] In the figure 1-frame; 2-chain mechanism; 21-driving shaft; 211-positioning hole; 3-paper rack; 31-clamp; 4-driving motor; 5-opener; 51-working part; 511-working curved surface; 512-installation hole; 52-maintaining part; 521-gap groove; 6-installation rod; 7-opening piece; 71-arc-shaped part; 72-straight part. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0025] Example 1 like Figure 1-Figure 3As shown, the page-turning dryer of this embodiment includes a frame 1, a chain mechanism 2 cyclically movable on the frame 1, and a plurality of paper racks 3 fixedly mounted on the chain mechanism 2, wherein the paper racks 3 are provided with clamps 31; one end of the frame 1 is a head end, and the other end is a tail end, the paper rack 3 at the head end flips upward with the chain mechanism 2, and the paper rack 3 at the tail end flips downward with the chain mechanism 2; a driving motor 4 is provided at the head end of the frame 1, and the output end of the driving motor 4 is connected to the driving shaft 21 of the chain mechanism 2.

[0026] The page-turning dryer of this embodiment also includes an opener 5 capable of opening the clamp 31. The opener 5 includes a working component 51 which is sleeved on the driving shaft 21 and corresponds to the position of the clamp 31. The working component 51 which rotates synchronously with the driving shaft 21 has a working curved surface 511 which can squeeze the tail end of the clamp 31 to open the clamp 31. The working curved surface 511 can squeeze the tail end of the clamp 31 to open the clamp 31. When the clamp 31 contacts the working component 51, the contact position between the clamp 31 and the working component 51 remains unchanged.

[0027] In this embodiment, the working component 51 is a circular ring, and the outer circumference of the circular ring is the working curved surface 511 of the working component 51. The radius R of the working curved surface 511 can be selected in the range of 107 mm to 109 mm. To ensure that the working curved surface can be opened at a suitable position, if the radius R of the working curved surface 511 is too large, the clamp will open too early and the paper will fall off too early, while if the radius R of the working curved surface 511 is too small, the clamp will not be opened. Therefore, in this embodiment, the radius R of the working curved surface 511 is selected to be 107 mm. The width of the working curved surface 511 extending to both sides can be selected to be 26 mm to 28 mm. In this embodiment, the width of the working curved surface 511 extending to both sides is selected to be 26 mm.

[0028] In order to facilitate disassembly and installation, a mounting hole 512 extending along the radial direction of the working component 51 is opened on the outer peripheral surface of the working component 51, and a positioning hole 211 matching the mounting hole 512 is opened on the driving shaft 21. The working component 51 and the driving shaft 21 are fixed by fasteners, which enhances the stability of installation and facilitates maintenance and replacement.

[0029] By setting a circular working part 51, when the clamp 31 enters the action area of ​​the working part 51 of the opener 5 driven by the chain mechanism 2, the working curved surface 511 on the outer periphery of the working part 51 will apply radial extrusion force to the tail end of the clamp 31, so that the clamp 31 can be opened and closed accurately. Since the working part 51 and the driving shaft 21 adopt a coaxial sleeve structure and keep synchronous rotation, the angular velocity of the working part 51 and the linear velocity of the clamp 31 are completely matched. This kind of movement synchronization ensures that during the flipping process of the clamp 31, its tail end and the working curved surface 511 always maintain a stable single-point contact, completely avoiding relative sliding. The friction loss of the contact surface is significantly reduced, the generation of debris is effectively prevented, and the stability and accuracy of the opening and closing action of the clamp 31 are guaranteed, thereby greatly improving the drying quality and yield rate of the printed matter.

[0030] The opener 5 also includes a maintaining component 52 arranged on the mounting rod 6 on the downstream side of the driving shaft 21, and both ends of the mounting rod 6 are fixed on the frame 1. When the clamp 31 of the paper rack 3 runs to the top of the working component 51, the clamp 31 will enter the working range of the maintaining component 52.

[0031] In order to make the closing process of the clamp 31 smooth and prevent rapid closing from causing rigid contact with the paper rack, the maintaining component 52 is tilted downward along the movement direction of the paper rack 3. According to the relationship between the opening angle of the clamp 31 and the length of the maintaining component 52, the selection range of the tilt angle of the maintaining component 52 is 2°-2.4°. In the present embodiment, the tilt angle of the maintaining component 52 is 2.4°; one end of the maintaining component 52 extends to the top of the working curved surface 511 and does not contact the working curved surface 511, and the other end extends downwardly at an angle toward the downstream side of the driving shaft 21; the tail end of the clamp 31 maintains contact with the upper surface of the maintaining component 52 when it runs above the maintaining component 52 until the clamp 31 is closed; a clearance groove 521 for accommodating the working component 51 is provided at one end of the maintaining component 52 facing the working component 51.

[0032] As a result, the clamp 31 can smoothly transition to the working range of the maintaining component 52 after being separated from the working component 51. Since the maintaining component 52 is arranged at an angle, the extrusion force on the rear end of the clamp is gradually reduced during the movement along the maintaining component 52. This progressive force transmission mechanism ensures that the opening of the clamp 31 can be smoothly and continuously narrowed until it reaches a fully closed state when it is completely separated from the maintaining component 52. This design effectively avoids the sudden closing of the clamp 31, which not only significantly improves the stability of the movement of the clamp 31, but more importantly, this progressive closing mechanism greatly improves the accuracy and quality of printing operations, especially in high-precision printing applications.

[0033] Example 2 Different from Example 1, Figure 4 As shown, the maintaining member 52 of this embodiment is arranged horizontally, and the upper surface of the maintaining member 52 does not exceed the top of the working member 51. In this embodiment, the clamp 31 will be closed in stages, and the opening of the clamp 31 will be narrowed for a period of time after leaving the working member 51, and the upper surface of the maintaining member 52 will still remain open. After leaving the maintaining member 52, the clamp 31 is completely closed.

[0034] The page-turning dryer of the present invention significantly reduces the friction loss of the contact surface, effectively prevents the generation of debris, and ensures the stability and accuracy of the opening and closing action of the clamp, thereby greatly improving the drying quality and yield rate of printed products; the maintaining components of the page-turning dryer of the present invention are inclined, and the progressive force transmission mechanism ensures that the clamp opening can be narrowed smoothly and continuously.

[0035] The present invention also provides a method for drying flower paper using the above-mentioned page-turning dryer, comprising the following steps: S1. The flower paper enters the working range of the dryer at the head end of the dryer; S2. At the head end of the dryer, the clamp on the paper rack flipped upward by the chain mechanism is squeezed by the working part to keep it open, and the paper rack lifts the flower paper and the flower paper enters the working range of the clamp; S3. The paper rack continues to move with the chain mechanism, and the paper rack leaves the working range of the working component and enters the working range of the maintaining component. The clamp gradually closes on the maintaining component and fixes the flower paper on the paper rack; S4. The flower paper continues to move on the paper rack along with the chain mechanism and is dried on the dryer; S5. The paper rack turns downward at the tail end of the dryer and enters the working range of the working parts along with the chain mechanism; S6. The working part opens the clamp on the paper rack, and the clamp releases the fixation of the flower paper. When the paper rack flips upward, the flower paper slides along the paper rack to the paper receiving device.

[0036] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

Claims

1. A page-turning dryer, comprising a frame (1), a chain mechanism (2) arranged on the frame (1) and capable of cyclic movement, and a plurality of paper racks (3) fixedly mounted on the chain mechanism (2), wherein the paper racks (3) are provided with a clamp (31); one end of the frame (1) is a head end, and the other end is a tail end, the paper racks (3) at the head end are turned upward along with the chain mechanism (2), and the paper racks (3) at the tail end are turned downward along with the chain mechanism (2); a driving motor (4) is provided at the head end of the frame (1), and the output end of the driving motor (4) is connected to a driving shaft (21) of the chain mechanism (2); the characteristics are as follows: A working component (51) is coaxially arranged on the driving shaft (21); the working component (51) rotates synchronously with the driving shaft (21) and has a working curved surface (511) capable of squeezing the rear end of the clamp (31) so that the clamp (31) opens and smoothly transitions to a closed state; when the clamp (31) contacts the working component (51), the clamp (31) and the working component (51) remain relatively stationary; A maintaining member (52) is provided on the downstream side of the working member (51).

2. The page-turning dryer according to claim 1, characterized in that: The maintaining component (52) is arranged on the downstream side of the working component (51) via a mounting rod (6) arranged on the frame (1), and the maintaining component (52) does not contact the working curved surface (511).

3. The page-turning dryer according to claim 2, characterized in that: The maintaining component (52) is arranged to be tilted downward along the moving direction of the paper rack (3).

4. The page-turning dryer according to claim 3, characterized in that: The inclination angle of the maintaining component (52) is 2°-2.4°.

5. The page-turning dryer according to claim 3, characterized in that: One end of the maintaining component (52) extends to the top of the working curved surface (511), and the other end extends obliquely downward toward the downstream side of the driving shaft (21); when the tail end of the clamp (31) moves above the maintaining component (52), it maintains contact with the upper surface of the maintaining component (52) until the clamp (31) is closed.

6. The page-turning dryer according to claim 2, characterized in that: The maintaining component (52) is arranged horizontally, and the upper surface of the maintaining component (52) does not exceed the top end of the working component (51).

7. The page-turning dryer according to any one of claims 2 to 6, characterized in that: One end of the maintaining component (52) facing the working component (51) is provided with a clearance groove (521) for accommodating the working component (51).

8. The page-turning dryer according to any one of claims 1 to 6, characterized in that: A mounting hole (512) extending in the radial direction of the working component (51) is formed on the outer peripheral surface of the working component (51), a positioning hole (211) matching the mounting hole (512) is formed on the driving shaft (21), and the working component (51) and the driving shaft (21) are mounted and fixed by fasteners.

9. The page-turning dryer according to any one of claims 1 to 6, characterized in that: The radius R of the working curved surface (511) is 107 mm to 109 mm; and / or the width of the working curved surface (511) extending to both sides is 26 mm to 28 mm.

10. A method for drying flower paper using the leaf-turning dryer according to any one of claims 1 to 9, characterized in that: The steps include: S1. The flower paper enters the working range of the dryer at the head end of the dryer; S2. At the head end of the dryer, as the chain mechanism (2) turns upward, the clamp (31) on the paper rack (3) is squeezed by the working component (51) to maintain a continuously open state, and the paper rack (3) lifts the flower paper and the flower paper enters the working range of the clamp (31); S3. As the chain mechanism (2) continues to move, the paper rack (3) leaves the working range of the working component (51) and enters the working range of the maintaining component (52), and the clamp (31) gradually closes on the maintaining component (52) and fixes the flower paper on the paper rack (3); S4. The flower paper continues to move on the paper rack (3) along with the chain mechanism (2) and is dried on the dryer; S5. The paper rack is turned downward at the tail end of the dryer and then enters the working range of the working part (51) along with the chain mechanism (2); S6. The working component (51) opens the clamp (31) on the paper rack (3), and the clamp (31) releases the fixation of the flower paper. When the paper rack (3) turns upward, the flower paper slides along the paper rack (3) to the paper receiving device.

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