Mouth opener device of drying machine and page turning type drying machine

Abstract

The utility model discloses a drying machine mouth opener device and a page turning type drying machine, the drying machine mouth opener device comprises a driving shaft driven by a driving device, a chain row mechanism installed on the driving shaft and a plurality of paper frames fixed on the chain row mechanism, and clamps are arranged on the paper frames; a working part is coaxially and fixedly arranged on the driving shaft, and the working part is provided with a working curved surface which can extrude the tail end of the clamp to open the clamp; and when the clamp is in contact with the working part, the clamp and the working part are kept relatively static. According to the utility model, the drying quality and the yield of printed matters are greatly improved.

Description

Technical Field

[0001] This utility model relates to a dryer opening device and a flip-type dryer, belonging to the field of drying equipment, and is mainly applicable to the drying of decal paper. Background Technology

[0002] Decorative paper is a type of craft paper with printed patterns on its base paper. Based on paper properties, it is classified into three categories: ceramic decals (polyvinyl butyral film paper), underglaze decals, and water-transfer decals. Because the decals are wet during screen printing, they require drying after printing.

[0003] Currently, the most common screen printing dryers on the market are flip-type dryers. The screen printing paper is fed into the flip-type dryer via a bridge belt. After drying in the drying chamber, it enters the next process. To avoid the printed side of the paper coming into contact with the paper holder in the drying chamber, the printed side will be kept tilted upward. However, the paper needs to be flipped about 180 degrees at the tail of the dryer. This will cause the printed side of the paper to go through a flipping process from printed side up to printed side down. At the same time, in order to prevent the paper from slipping off the paper rack, clamps must be installed on the crossbar of the paper rack.

[0004] Through long-term observation, the inventor of this utility model discovered that due to the continuous sliding friction of the clamp along the arc-shaped part of the paper opener, metal shavings are generated on the contact surface. These metal shavings fall freely and directly contaminate the surface of the printed material below, causing contamination and significantly increasing the defect rate. Simultaneously, the constant friction of the clamp against the paper opener leads to wear and damage to the clamp itself, necessitating replacement of the paper holder after a period of use, thus increasing operating costs. Utility Model Content

[0005] The present invention aims to address the above-mentioned technical problems by providing a dryer opening device and a flip-type dryer that can prevent printed materials from being contaminated during the process of changing from print-side up to print-side down.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A dryer opening device includes a drive shaft driven by a drive device, a chain assembly mounted on the drive shaft, and a plurality of paper holders fixed on the chain assembly, wherein clamps are provided on the paper holders; a working component is coaxially fixed on the drive shaft, the working component having a working curved surface capable of squeezing the tail end of the clamps to open the clamps; when the clamps contact the working component, the clamps and the working component remain relatively stationary.

[0008] Therefore, when the fixture moves into the working range of the working component under the drive of the chain mechanism, the working surface on the outer periphery of the working component applies radial pressure to the tail end of the fixture, ensuring stable opening of the fixture. Because the working component rotates synchronously with the drive shaft, its angular velocity is strictly matched with the linear velocity of the fixture, ensuring that the fixture maintains point contact with the working surface throughout the flipping process, and the contact position between the fixture and the working component remains unchanged. This synchronization of motion not only eliminates relative sliding between the fixture and the working surface, significantly reducing frictional loss, but also effectively avoids debris contamination caused by friction, thereby ensuring the cleanliness of the printed surface and improving printing quality. Furthermore, this design extends the service life of the fixture, reduces equipment maintenance frequency, and improves the operating efficiency of the dryer.

[0009] Based on the embodiments of this utility model, further optimizations can be made to this utility model. The optimized technical solutions are as follows:

[0010] To make the clamp closing process smoother, in one specific embodiment, a holding member is fixedly provided on the downstream side of the working component, and the holding member does not contact the working curved surface.

[0011] In one specific embodiment, the holding member is inclined downward along the direction of paper rack movement at an angle of 2°-2.4°.

[0012] In one specific embodiment, one end of the holding member extends to the top of the working surface, and the other end extends downward at an angle towards the downstream side of the drive shaft; the tail end of the clamp remains in contact with the upper surface of the holding member as it moves over the holding member until the clamp closes.

[0013] Therefore, the clamp can smoothly transition to the working range of the holding component after disengaging from the working component. Because the holding component is arranged at an angle, the compressive force on the clamp's tail end gradually decreases as it moves along the holding component. This gradual force transmission mechanism ensures that the clamp opening narrows smoothly and continuously until it is completely closed upon disengagement from the holding component; this avoids rapid clamp closure and thus improves printing quality.

[0014] In another embodiment, the present invention also provides another support member structure, specifically, the support member is horizontally arranged, and the upper surface of the support member does not extend beyond the top of the working member.

[0015] In one specific embodiment, the holding member has a relief groove at one end facing the working member for accommodating the working member.

[0016] To facilitate the disassembly of the working parts, in one specific embodiment, a mounting hole extending along the radial direction of the working parts is provided on the outer peripheral surface of the working parts, and a positioning hole matching the mounting hole is provided on the drive shaft, and the working parts and the drive shaft are fixed together by fasteners.

[0017] In one specific embodiment, the radius R of the working surface is 107 mm to 109 mm.

[0018] In one specific embodiment, the working curved surface extends to both sides with a width of 26 mm to 28 mm.

[0019] In one specific embodiment, the working component is a ring sleeved on the drive shaft.

[0020] Based on the same inventive concept, this utility model also provides a flip-type dryer, including a frame, wherein the head end of the frame is provided with a dryer opening device as described above.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1) The dryer opening device of the flip-type dryer of this utility model improves the structure of the working parts. The angular velocity of the working parts is the same as the linear velocity of the clamp, which ensures that the clamp always maintains point contact with the working curved surface during the flipping process, which 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.

[0023] 2) The holding component of the flip-type dryer of this utility model is inclined, and the progressive force transmission mechanism ensures that the opening of the clamp can be narrowed smoothly and continuously until it is completely closed when it is completely separated from the holding component. This ensures the smoothness and accuracy of the clamp opening and closing action, thereby greatly improving the drying quality and yield of printed materials.

[0024] 3) The flip-type dryer of this utility model effectively avoids the sudden closing phenomenon common in traditional opening system. It not only significantly improves the stability of the clamp movement, but more importantly, this gradual closing mechanism greatly improves the accuracy and quality of printing operations, especially showing significant advantages in high-precision printing applications. Attached Figure Description

[0025] Figure 1 This is an isometric structural diagram of the head end of the page-turning dryer of this utility model;

[0026] Figure 2 This is a partial enlarged view of the dryer opening device of this utility model;

[0027] Figure 3 This is a schematic diagram of the working process of the dryer opening device in Embodiment 1 of this utility model;

[0028] Figure 4 This is a schematic diagram of the working process of the dryer opening device in Embodiment 2 of this utility model.

[0029] In the figure

[0030] 1-Frame; 2-Chain mechanism; 21-Drive shaft; 211-Positioning hole; 3-Paper holder; 31-Clamp; 4-Drive motor; 5-Dryer opening device; 51-Working part; 511-Working curved surface; 512-Mounting hole; 52-Maintaining part; 521-Leaning groove; 6-Mounting rod; 7-Opening part; 71-Arc-shaped part; 72-Straight part. Detailed Implementation

[0031] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other. For ease of description, the terms "upper," "lower," "left," and "right" appearing below only indicate that they correspond to the upper, lower, left, and right directions in the accompanying drawings and do not limit the structure.

[0032] Example 1

[0033] like Figures 1-3 As shown, the page-turning dryer of this embodiment includes a frame 1, on which a dryer opening device 5 is provided. The dryer opening device 5 includes a chain conveyor mechanism 2 that can be circulatedly moved on the frame 1 and a plurality of paper racks 3 fixedly installed on the chain conveyor mechanism 2. The paper racks 3 are provided with clamps 31. One end of the frame 1 is the head end and the other end is the tail end. The paper racks 3 at the head end flip upward with the chain conveyor mechanism 2, and the paper racks 3 at the tail end flip downward with the chain conveyor mechanism 2. The head end of the frame 1 is provided with a drive motor 4, and the output end of the drive motor 4 is connected to the drive shaft 21 of the chain conveyor mechanism 2.

[0034] The dryer opening device 5 further includes a working component 51 sleeved on the drive shaft 21 and corresponding to the position of the clamp 31. The working component 51, which rotates synchronously with the drive shaft 21, has a working curved surface 511 that 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.

[0035] In this embodiment, the working component 51 is a ring, and the outer circumferential surface of the ring is the working surface 511 of the working component 51. The radius R of the working surface 511 can be selected in the range of 107 mm to 109 mm. To ensure that the working surface can open at the appropriate position, if the radius R of the working surface 511 is too large, the clamp will open too early and the paper will fall off prematurely, while if the radius R of the working surface 511 is too small, the clamp will not be able to open. Therefore, in this embodiment, the radius R of the working surface 511 is selected as 107 mm. The width of the working surface 511 extending to both sides can be selected as 26 mm to 28 mm. In this embodiment, the width of the working surface 511 extending to both sides is selected as 26 mm.

[0036] To facilitate disassembly and installation, a mounting hole 512 extending radially from the outer circumferential surface of the working component 51 is provided. A positioning hole 211 matching the mounting hole 512 is provided on the drive shaft 21. The working component 51 and the drive shaft 21 are fixed together by fasteners. This enhances installation stability and facilitates maintenance and replacement.

[0037] By setting up a circular working component 51, when the clamp 31 enters the working area of ​​the working component 51 driven by the chain mechanism 2, the working curved surface 511 on the outer periphery of the working component 51 applies radial extrusion force to the tail end of the clamp 31, enabling the clamp 31 to open and close precisely. Since the working component 51 and the drive shaft 21 adopt a coaxial sleeve structure and rotate synchronously, the angular velocity of the working component 51 and the linear velocity of the clamp 31 are perfectly matched. This motion synchronization ensures that the tail end of the clamp 31 maintains stable single-point contact with the working curved surface 511 during the flipping process, avoiding relative sliding and significantly reducing frictional wear on the contact surface. This effectively prevents the generation of debris and ensures the smoothness and accuracy of the clamp 31's opening and closing action, thereby greatly improving the drying quality and yield of printed materials.

[0038] The dryer opening device 5 also includes a holding member 52 disposed on the mounting rod 6 downstream of the drive shaft 21. When the clamp 31 of the paper holder 3 moves to the top of the working member 51, the clamp 31 will enter the working range of the holding member 52. The two ends of the mounting rod 6 are fixed to the frame 1.

[0039] To ensure a smooth closing process for the clamp 31 and prevent rapid closing and rigid contact with the paper holder, the retaining member 52 is inclined downwards along the movement direction of the paper holder 3. The inclination angle of the retaining member 52 is selected within the range of 2°-2.4° based on the relationship between the opening angle of the clamp 31 and the length of the retaining member 52. In this embodiment, the inclination angle of the retaining member 52 is 2.4°. One end of the retaining member 52 extends to the top of the working surface 511 without contacting it, while the other end extends downwards and inclines towards the downstream side of the drive shaft 21. The tail end of the clamp 31 remains in contact with the upper surface of the retaining member 52 when it moves above it until the clamp 31 closes. The retaining member 52 has a relief groove 521 at its end facing the working member 51 to accommodate the working member 51.

[0040] Therefore, after disengaging from the working component 51, the clamp 31 can smoothly transition into the working range of the holding component 52. Because the holding component 52 is arranged at an angle, the compressive force on the tail end of the clamp gradually decreases as it moves along the holding component 52. This gradual force transmission mechanism ensures that the opening of the clamp 31 can achieve a smooth and continuous narrowing until it reaches a fully closed state when completely disengaged from the holding component 52. This design effectively avoids the sudden closing of the clamp 31, significantly improving not only the smoothness of the clamp 31's movement, but more importantly, this gradual closing mechanism greatly improves the accuracy and quality of printing operations, especially showing significant advantages in high-precision printing applications.

[0041] Example 2

[0042] Unlike Example 1, as Figure 4 As shown, the holding member 52 in this embodiment is horizontally positioned, and the upper surface of the holding member 52 does not extend beyond the top of the working member 51. In this embodiment, the clamp 31 will close in stages. After leaving the working member 51, the opening of the clamp 31 will narrow to a certain extent, while the upper surface of the holding member 52 will remain open. After leaving the holding member 52, the clamp 31 will be completely closed.

[0043] The flip-type dryer of this utility model significantly reduces frictional wear on the contact surface, effectively preventing the generation of debris, while ensuring the smoothness and accuracy of the clamp opening and closing action, thereby greatly improving the drying quality and yield of printed materials; the holding component of the flip-type dryer of this utility model is inclined, and the progressive force transmission mechanism ensures that the clamp opening can be smoothly and continuously narrowed.

[0044] The above embodiments should be understood as being used only to illustrate the present invention more clearly, and not to limit the scope of the present invention. After reading the present invention, any modifications of the present invention by those skilled in the art in various equivalent forms fall within the scope defined by the appended claims.

Claims

1. A dryer opening device, comprising a drive shaft (21) driven by a drive device, a chain assembly (2) mounted on the drive shaft (21), and a plurality of paper holders (3) fixed on the chain assembly (2), wherein clamps (31) are provided on the paper holders (3); characterized in that: A working component (51) is coaxially fixed on the drive shaft (21). The working component (51) has a working surface (511) that can squeeze the tail end of the clamp (31) to open the clamp (31). When the clamp (31) contacts the working component (51), the clamp (31) and the working component (51) remain relatively stationary.

2. The dryer opening device according to claim 1, characterized in that: A holding member (52) is fixedly provided on the downstream side of the working component (51), and the holding member (52) does not contact the working surface (511).

3. The dryer opening device according to claim 2, characterized in that: The retaining component (52) is inclined downward along the direction of movement of the paper holder (3).

4. The dryer opening device according to claim 3, characterized in that: The tilt angle of the retaining component (52) is 2°-2.4°.

5. The dryer opening device according to claim 3, characterized in that: One end of the holding member (52) extends to the top of the working surface (511), and the other end extends downward at an angle to the downstream side of the drive shaft (21); the tail end of the clamp (31) remains in contact with the upper surface of the holding member (52) when it runs above the holding member (52) until the clamp (31) closes.

6. The dryer opening device according to claim 2, characterized in that: The maintaining member (52) is horizontally positioned, and the upper surface of the maintaining member (52) does not extend beyond the top of the working member (51).

7. The dryer opening device according to any one of claims 2-6, characterized in that: The retaining member (52) has a relief groove (521) at one end facing the working member (51) for accommodating the working member (51).

8. The dryer opening device according to any one of claims 1-6, characterized in that: A mounting hole (512) extending in the radial direction of the working part (51) is provided on the outer peripheral surface of the working part (51), and a positioning hole (211) matching the mounting hole (512) is provided on the drive shaft (21). The working part (51) and the drive shaft (21) are fixed together by fasteners.

9. The dryer opening device according to any one of claims 1-6, characterized in that: The working component (51) is a ring sleeved on the drive shaft (21); the radius R of the working surface (511) is 107 mm to 109 mm; and / or the width of the working surface (511) extending to both sides is 26 mm to 28 mm.

10. A rotary dryer, characterized in that: Includes a frame (1), the head end of which is provided with a dryer opening device as described in any one of claims 1-9.

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