A heating device for carbonless copy paper production

Abstract

This utility model discloses a heat drying device for the production of carbonless copy paper, belonging to the technical field of heat drying devices. It includes a horizontally arranged box with a feed inlet at one end and a back plate fixedly connected to the other end. An adjustment platform is fixedly installed on the longitudinal inner wall of the box. An upper adjustment plate and a lower adjustment plate are slidably connected to the upper and lower parts of the adjustment platform via linear guide rails, respectively. These upper and lower adjustment plates are driven by a driving mechanism. This achieves precise and synchronous adjustment of the drying distance, improving drying quality and adaptability. The adjustment plates, located on the upper and lower inner walls of the box, driven by servo electric cylinders and linked via synchronous shafts, slide along high-precision linear guide rails on the adjustment platform, ensuring that the upper and lower drying hoods can move smoothly and synchronously towards or away from the moving paper as a whole, achieving precise control of the non-contact hot air drying distance.

Description

Technical Field

[0001] This utility model relates to the field of heat drying equipment, and in particular to a heat drying equipment for the production of carbonless copy paper. Background Technology

[0002] During the production of carbonless copy paper, a heat-drying process is required to fix the microcapsule coating on its surface and remove moisture. Existing heat-drying equipment typically has the following drawbacks:

[0003] First, the hot air drying method is singular, and the distance between the hot air outlet and the paper is fixed, which cannot be flexibly adjusted according to different paper weights and speeds, resulting in uneven drying or low efficiency. Moreover, the traditional contact heat-conducting roller has a fixed installation position and the pressure is not adjustable, which can easily cause crushing of thin carbonless copy paper, damaging its sensitive microcapsule layer and affecting the color development effect.

[0004] Furthermore, when internal components of the equipment, such as drying hoods and heating rollers, malfunction or require maintenance, the disassembly process is cumbersome, resulting in long downtime and affecting overall production efficiency.

[0005] To address the aforementioned problems, this invention provides a heat drying device for the production of carbonless copy paper. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a heat drying device for the production of carbonless copy paper, which solves the problems mentioned in the background.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a heat drying device for the production of carbonless copy paper, comprising a horizontally arranged box, an inlet at one end of the box and a back plate fixedly connected at the other end, an adjustment platform fixedly arranged on the longitudinal inner wall of the box, and an upper adjustment plate and a lower adjustment plate slidably connected to the upper and lower parts of the adjustment platform through a linear guide pair, the upper and lower adjustment plates being driven by a driving mechanism;

[0008] A drying hood is raised on the inner surface of both the upper and lower adjustment plates, and the air outlet of the drying hood points to the internal channel of the box.

[0009] A hot air mechanism is located at the top of the chamber, and this mechanism is connected to the drying hood via a conveyor pipe. Behind the adjusting plate on the paper passage, there are also the following:

[0010] An electric drying assembly includes an upper heating roller that is vertically mounted inside a housing and a lower heating roller that is fixedly mounted. The upper heating roller is mounted via a lifting actuator to adjust the distance between it and the lower heating roller.

[0011] The winding assembly is detachably connected to the inner wall of the box via a pull-out structure.

[0012] As a further technical solution of this utility model, the driving mechanism is a servo electric cylinder, and the servo electric cylinders of the upper and lower adjustment plates are linked by a synchronous shaft.

[0013] As a further technical solution of this utility model, the lifting actuator is a ball screw pair.

[0014] As a further technical solution of this utility model, the air outlet of the drying hood is distributed with multiple sets of narrow slit nozzles.

[0015] As a further technical solution of this utility model, the pull-out structure consists of a guide rail set on the inner wall of the box and a first mounting plate fixedly connected to the winding assembly, wherein the first mounting plate slides in cooperation with the guide rail.

[0016] As a further technical solution of this utility model, the connection end between the conveying pipe and the drying hood is set as a corrugated compression pipe.

[0017] As a further technical solution of this utility model, the upper heating roller and the lower heating roller are heat-conducting oil heating rollers with internal double-circuit rotary joints.

[0018] As a further technical solution of this utility model, a guide plate in a trapezoidal longitudinal distribution is fixedly connected to the inner side of the feed inlet, and a support roller connected to the inner wall of the box is fixedly connected to the inner side of the guide plate. The surface of the support roller is covered with a silicone anti-slip layer.

[0019] As a further technical solution of this utility model, a detachable cover plate with an arc-shaped outward protrusion is movably connected to the surface of the back plate via a shaft.

[0020] This invention provides a heat drying device for the production of carbonless copy paper, which has the following advantages compared with the prior art:

[0021] 1. This design presents a hot air drying device for carbonless copy paper production, achieving precise and synchronous adjustment of the drying distance, thus improving drying quality and adaptability. Through an adjustment plate installed on the upper and lower inner walls of the chamber, driven by a servo electric cylinder and linked via a synchronous shaft, sliding along a high-precision linear guide on the adjustment platform, the upper and lower drying hoods can be moved as a single unit, smoothly and synchronously approaching or moving away from the moving paper. This achieves precise control of the non-contact hot air drying distance, enabling rapid optimization of drying parameters for different production conditions, effectively avoiding problems such as uneven drying, paper warping, or excessive energy consumption caused by inconsistent distances between the upper and lower air vents.

[0022] 2. This design provides a heat drying device for carbonless copy paper production, offering flexible and precise contact pressure control to protect paper quality. The upper heating roller is mounted in the vertical guide groove of the second mounting plate via a ball screw assembly, forming an independent pressure adjustment mechanism. This allows the upper heating roller to precisely rise and fall vertically, achieving stepless and precise linear pressure adjustment on the paper. This ensures stable and uniform heat transfer between the heat-conducting oil heating roller and the paper, while preventing excessive pressure from crushing the microcapsule layer of the carbonless copy paper, perfectly balancing drying efficiency and finished product quality.

[0023] 3. This design of a heat drying device for carbonless copy paper production significantly improves the maintainability and ease of operation of the equipment. The winding assembly forms a pull-out structure through the first mounting plate and the guide rail on the inner wall of the box. The second mounting plate of the electric drying assembly also adopts a similar modular installation method. At the same time, a movable and detachable cover is provided at one end of the box. This modular and pull-out mechanical design allows the winding assembly and the electric drying assembly to be quickly and completely pulled out of the box when they need to be replaced, repaired or cleaned, which greatly simplifies the maintenance process, shortens downtime, and thus improves the overall utilization rate of the production line.

[0024] 4. This design provides a hot air drying device for carbonless copy paper production. It optimizes the hot air distribution and enhances the system reliability. The multiple sets of narrow-slit nozzles on the top of the drying hood, as well as the corrugated compression pipe connecting the conveying pipe and the drying hood, allow the narrow-slit nozzles to blow hot air evenly and at high speed onto the paper surface, creating an "air knife" effect to improve drying efficiency. The corrugated compression pipe structure effectively compensates for the displacement generated during the lifting and lowering of the regulating plate, avoiding pipe twisting and stress fatigue, and improving the long-term reliability of the hot air conveying system. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a heat drying device for the production of carbonless copy paper.

[0026] Figure 2 This is a schematic diagram of the internal structure of a heat drying device for the production of carbonless copy paper.

[0027] Figure 3 For the production of carbonless copy paper Figure 2 Enlarged view of the structure at point A in the middle;

[0028] Figure 4 This is a schematic diagram of the connection of an electric drying assembly for the production of carbonless copy paper.

[0029] In the diagram: 1. Box body; 2. Feed inlet; 3. Guide plate; 4. Support roller; 5. Hot air mechanism; 6. Adjusting plate; 7. Drying hood; 8. Adjusting table; 9. Electric drying assembly; 10. Rewinding assembly; 11. Back plate; 12. Removable cover plate; 13. First mounting plate; 14. Upper auxiliary roller; 15. Rewinding roller; 16. Drying box; 17. Filter plate; 18. Conveying pipe; 19. Second mounting plate; 20. Upper heating roller; 21. Lower heating roller. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-4 This utility model provides a technical solution for a heat drying device for the production of carbonless copy paper: it includes a horizontally arranged box 1, a detachable transparent observation panel on the front of the box 1, a feed port 2 at one end of the box 1, and a back plate 11 fixedly connected to the other end. A guide plate 3 arranged in a trapezoidal shape and longitudinally distributed is fixedly connected to the inner side of the feed port 2. A detachable cover plate 12 arranged in an arc shape and protruding outward is movably connected to the surface of the back plate 11 through a shaft. A support roller 4, which is also connected to the inner wall of the box 1, is fixedly connected to the horizontal inner side of the guide plate 3. A drive motor is provided at the outer end of the support roller 4.

[0032] A hot air mechanism 5 is fixedly connected to the top of the box 1. A rectangular vertical adjustment platform 8 is fixedly connected to the longitudinal inner wall surface of the box 10. Adjustment plates 6 located on the upper and lower inner walls of the box 1 are slidably connected to the upper and lower ends of the adjustment platform 8. A drying hood 7 is raised on the surface of the adjustment plate 6. The adjustment plate 6 and the adjustment platform 8 are slidably connected by guide rails and sub-rails.

[0033] An electric drying assembly 9 and a winding assembly 10, which are connected to the inner wall of the box 1, are sequentially fixed on the outer side of the adjustment plate 6 toward the back plate 11. The electric drying assembly 9 includes a vertically arranged second mounting plate 19 and an upper heating roller 20 and a lower heating roller 21 distributed on its surface. The winding assembly 10 includes a first mounting plate 13 and an upper auxiliary roller 14 and a winding roller 15 distributed on its surface.

[0034] The hot air mechanism 5 includes a drying box 16 and a filter plate 17 inside it. A conveying pipe 18 is connected to the outside of the drying box 16 and the drying hood 7.

[0035] like Figure 1-2As shown, the guide plate 3 and the support roller 4 are distributed adjacent to each other from left to right. The surface of the support roller 4 is covered with a silicone anti-slip layer. The two sides of the surface of the adjustment table 8 are vertically arranged with corresponding linear slide rails of the adjustment plate 6. The adjustment plate 6 is arranged in a rectangular longitudinal direction. Its bottom surface and the inner wall of the box 1 are connected by an electric telescopic rod. The drying hood 7 is arranged in a trapezoidal hood protrusion. The top air outlet of the drying hood 7 is distributed with multiple sets of narrow slit nozzles.

[0036] like Figure 3-4 As shown, the conveying pipe 18 is divided into two sets of pipes and connected to the drying hoods 7 on the two sets of regulating plates 6. Simultaneously, the conveying pipe 18 is embedded within the regulating plate 6. The connection end between the conveying pipe 18 and the drying hood 7 is configured as a corrugated compression pipe. The drying box 16 includes a high-temperature resistant centrifugal fan located behind the filter plate 17 and heating elements arranged in an array. The heating elements are stainless steel electric heating tubes. The filter plate 17 includes a set of rectangular filter plates and an arc-shaped filter plate on its back. The rectangular filter plates and the arc-shaped filter plates are respectively configured as metal filter screens and resin filter plates. The second mounting plate 19 is... The rectangular vertical arrangement fits the longitudinal inner wall surface of the housing 1. The upper and lower ends of the front of the second mounting plate 19 are simultaneously provided with outward convex corners. The upper heating roller 20 and the lower heating roller 21 are distributed vertically on the same horizontal line. The upper heating roller 20 and the lower heating roller 21 are provided with heat transfer oil heating rollers. Both are provided with a double-circuit rotary joint. One end introduces external heat transfer oil, and the other end exits it. The upper heating roller 20 and the outward convex corner at the upper end of the second mounting plate 19 are connected by a control screw for lifting. The surface of the second mounting plate 19 is provided with a vertical guide groove corresponding to the upper heating roller 20.

[0037] like Figure 2 As shown, the first mounting plate 13 is a rectangular plate that fits against the longitudinal inner wall surface of the box 1. The upper auxiliary roller 14 and the winding roller 15 are inclinedly distributed vertically. The outer end of the winding roller 15 is equipped with a drive motor. The first mounting plate 13 and the inner wall of the box 1 are connected by a guide rail.

[0038] All the electric telescopic rods in this device are equipped with servo electric cylinders. To ensure that the two adjusting plates 6 are raised and lowered synchronously, a synchronous shaft is provided between the two sets of adjusting plates 6, which is driven by a single motor. The guide rail and the auxiliary rail are set as high-precision linear guide rail pairs. The control screw of the upper heating roller 20 is set as a ball screw pair and driven by a servo motor. The drive motor of the take-up roller 15 is a torque-mode servo motor. All of the above are existing public technologies, so they will not be described in detail.

[0039] In actual use, this device must also integrate its corresponding existing technologies, safety measures and conventional operating methods, such as the integrated control system and safety protection involved. In addition, the tension and correction operations and operation monitoring involved are all existing public technologies, so they will not be described in detail.

[0040] The working principle of this utility model is as follows: When this device is in use, the external paper first enters the box 1 through the feed port 2, and is supported and guided by the guide plate 3 and the support roller 4. One end of the paper is initially fixed on the winding roller 15.

[0041] Then the support roller 4 rotates to continuously convey the external paper. The hot air mechanism 5 is started to heat the external airflow. After being filtered by the filter plate 17, the airflow is conveyed to the drying hood 7 through the conveying pipe 18. As the paper is conveyed, the two sets of drying hoods 7 heat the paper surface from the top and bottom.

[0042] When the paper passes through the electric drying assembly 9, the upper heating roller 20 and the lower heating roller 21 come into contact with the paper to dry it and ensure the heat drying effect. The upper auxiliary roller 14 and the winding roller 15 realize the winding operation after the paper is heated.

[0043] The electric telescopic rod between the bottom of the adjusting plate 6 and the inner wall of the box 1 can control the vertical lifting and lowering of the adjusting plate 6 and the drying hood 7 along the surface of the adjusting table 8, thereby controlling and conveying the heat drying distance between the paper. When the paper passes through the electric drying component 9, the upper heating roller 20 can be independently adjusted by the control screw to ensure contact with the paper.

[0044] After the heat drying is completed, the user can open the disassembly cover 12 or the back plate 11 to pull the entire winding assembly 10 out of the box 1. Alternatively, the electric drying assembly 9 can be replaced for maintenance.

[0045] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model are implemented according to conventional methods in the art, unless otherwise specified or limited.

Claims

1. A heat drying device for the production of carbonless copy paper, comprising a horizontally arranged box (1), with a feed inlet (2) at one end and a back plate (11) fixedly connected to the other end, characterized in that: An adjustment platform (8) is fixedly installed on the longitudinal inner wall of the box (1). The upper and lower parts of the adjustment platform (8) are slidably connected by an upper adjustment plate and a lower adjustment plate (6) through a linear guide pair. The upper adjustment plate and the lower adjustment plate (6) are driven by a driving mechanism. The upper and lower adjustment plates (6) are provided with a drying hood (7) protruding on their respective inner surfaces, and the air outlet of the drying hood (7) points to the internal channel of the box (1). The top of the box (1) is equipped with a hot air mechanism (5), which is connected to the drying hood (7) through a conveying pipe (18). Behind the adjusting plate (6) on the paper channel, the following are also arranged in sequence: The electric drying assembly (9) includes an upper heating roller (20) that is vertically mounted in the housing (1) and a lower heating roller (21) that is fixedly mounted. The upper heating roller (20) is mounted by a lifting actuator to adjust the distance between it and the lower heating roller (21). The winding assembly (10) is detachably connected to the inner wall of the housing (1) via a pull-out structure.

2. The heat drying device for producing carbonless copy paper according to claim 1, characterized in that: The driving mechanism is a servo electric cylinder, and the servo electric cylinders of the upper and lower adjustment plates (6) are linked by a synchronous shaft.

3. The heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The lifting actuator is a ball screw pair.

4. The heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The air outlet of the drying hood (7) is distributed with multiple sets of narrow slit nozzles.

5. A heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The pull-out structure consists of a guide rail set on the inner wall of the box (1) and a first mounting plate (13) fixedly connected to the winding assembly (10), with the first mounting plate (13) slidingly engaging with the guide rail.

6. The heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The connection end between the conveying pipe (18) and the drying hood (7) is set as a corrugated compression pipe.

7. A heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The upper heating roller (20) and the lower heating roller (21) are heat-conducting oil heating rollers with internal double-circuit rotary joints.

8. A heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The feed inlet (2) is fixedly connected to a guide plate (3) arranged in a trapezoidal longitudinal direction. The guide plate (3) is fixedly connected to a support roller (4) connected to the inner wall of the box (1) on the transverse inner side. The surface of the support roller (4) is covered with a silicone anti-slip layer.

9. A heat drying apparatus for producing carbonless copy paper according to claim 1, characterized in that: The back plate (11) surface is movably connected to a detachable cover plate (12) with an arc-shaped outward protrusion via a shaft.

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