Sizing device for die roller

Abstract

The utility model provides a sizing device for a die roller, and relates to the technical field of electronic tag production, the sizing device is used for applying conductive paste to the die roller, a printing groove is formed in the outer side face of the die roller, the sizing device is characterized in that a paste groove and a paste passing roller are arranged, the conductive paste is arranged in the paste groove, and the paste passing roller is arranged above the paste groove and partially immersed in the conductive paste; the mold roller is arranged obliquely above the pulp passing roller and is attached to the pulp passing roller; the raw material barrel is communicated with the spray head through the conveying pipeline, the slurry supply pump operates, conductive slurry in the raw material barrel can be directly conveyed to the position between the slurry passing roller and the mold roller through the conveying pipeline and the spray head, redundant conductive slurry falls into the slurry tank, and the sizing effect of the mold roller is good.

Description

Technical Field

[0001] This application belongs to the technical field of electronic tag manufacturing, and more specifically, relates to a sizing device for a mold roller. Background Technology

[0002] With the continuous advancement of RFID component manufacturing technology, RFID electronic tag manufacturing methods based on printing processes have emerged in the market. These methods use gravure printing and other techniques to print a liquid, conductive paste onto a substrate according to a pre-set pattern. The paste is then dried and cured using methods such as heating and photocuring to obtain a conductive RFID electronic tag. For example, invention 201810111964.1 discloses a method for preparing graphene conductive ink that can be used for RFID electronic tags, and invention 201910216604.2 discloses a graphene-based RFID antenna and its printing method.

[0003] Existing RFID electronic tag production equipment has the following drawbacks: the conductive inks used for printing RFID electronic tags are all based on water-based resins, which have slightly poor conductivity during use. Due to the characteristics of metal conductive powder and graphene itself, the slurry system has poor dispersion and uniformity, and poor performance stability. In addition, water-based conductive slurries have slow drying speeds, making them difficult to match with gravure printing processes, resulting in low production capacity. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a sizing device for a die roller. The technical solution adopted in this application is as follows:

[0005] A sizing device for a mold roller is used to apply conductive paste to the mold roller. The outer side of the mold roller is provided with a printing groove. The sizing device is provided with a paste trough and a paste delivery roller. The paste trough contains conductive paste, and the paste delivery roller is located above the paste trough and partially immersed in the conductive paste. The mold roller is located diagonally above the paste delivery roller and abuts against the paste delivery roller.

[0006] Preferably, a slurry feeding mechanism is also provided, which includes a nozzle and a raw material cylinder connected to the nozzle, with the front end of the nozzle pointing between the mold roller and the slurry delivery roller.

[0007] Preferably, there are multiple nozzles, which are evenly distributed along a direction parallel to the rotation axis of the mold roller.

[0008] Preferably, the nozzle opening is flat, and the width of the nozzle opening gradually increases from the inside to the outside.

[0009] Preferably, a pressure pump for increasing the pressure at the nozzle is also provided at the rear end of the nozzle.

[0010] Preferably, the raw material cylinder is provided with a first temperature control mechanism, which is used to control the temperature of the conductive paste inside the raw material cylinder.

[0011] Preferably, the slurry tank is equipped with a second temperature control mechanism, which is used to control the temperature of the conductive slurry in the slurry tank.

[0012] Preferably, the slurry tank is equipped with a liquid control mechanism, which is used to control the depth of the conductive slurry in the slurry tank.

[0013] Preferably, the liquid control mechanism is provided with an overflow pipe, and a connecting port is provided between the overflow pipe and the slurry tank, with the position of the connecting port being level with the liquid surface in the slurry tank.

[0014] The advantages of this application are as follows:

[0015] The conveying pipeline connects the raw material tank to the nozzle. When the slurry pump is running, the conductive slurry in the raw material tank can be directly sent to the slurry roller and the die roller through the conveying pipeline and the nozzle. Excess conductive slurry falls into the slurry tank, and the slurry application effect of the die roller is good.

[0016] Multiple nozzles are evenly distributed along a direction parallel to the rotation axis of the mold roller, ensuring sufficient conductive paste is fed between the paste delivery roller and the mold roller; the nozzle openings are flat, and the width of the nozzle openings gradually increases from the inside to the outside, ensuring that the conductive paste is evenly distributed between the paste delivery roller and the mold roller, further ensuring the sizing effect of the mold roller. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the printing device;

[0019] Figure 2 This is a schematic diagram illustrating the working principle of the sizing device;

[0020] Figure 3 This is a schematic diagram of the nozzle;

[0021] Figure 4 This is a schematic diagram of the molding roller.

[0022] 1 is the printing mechanism, 11 is the slurry tank, 12 is the mold roller, 121 is the printing groove, 13 is the slurry delivery roller, 14 is the pressure roller, 141 is the cylinder, 15 is the scraper, 151 is the swing arm, 16 is the hydraulic control mechanism, 161 is the overflow pipe, 162 is the connecting port, 17 is the second temperature control mechanism, 171 is the circulating water pipe, and 172 is the temperature-controlled water tank.

[0023] 2 is the slurry feeding mechanism, 21 is the raw material tank, 22 is the slurry feeding pipe, 23 is the slurry supply pump, 24 is the nozzle, and 25 is the first temperature control mechanism;

[0024] 3 is the drying mechanism, and 31 is the drying box;

[0025] 4 is the take-up mechanism, and 41 is the take-up roller;

[0026] 5 is printing paper. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] The sizing device for mold rollers provided in the embodiments of this application will now be described.

[0029] like Figure 1 As shown, a slurry application device for a die roller is used to provide conductive paste to a printing device.

[0030] like Figure 2 As shown, a slurry application device for a mold roller includes a slurry feeding mechanism 2. The slurry feeding mechanism 2 includes a raw material cylinder 21, a conveying pipe 22, a slurry pump 23, and a nozzle 24. The conveying pipe 22 is located between the raw material cylinder 21 and the nozzle 24. The slurry pump 23 is located on the conveying pipe 22. The front end of the nozzle 24 points between the slurry delivery roller 13 and the mold roller 12. The conveying pipe 22 connects the raw material cylinder 21 and the nozzle 24. When the slurry pump 23 is running, it can send the conductive slurry in the raw material cylinder 21 through the conveying pipe 22 and the nozzle 24 to the space between the slurry delivery roller 13 and the mold roller 12. Excess conductive slurry falls into the slurry tank 11.

[0031] like Figure 3 As shown, there are multiple nozzles 24, which are evenly distributed along a direction parallel to the rotation axis of the mold roller 12 to ensure that sufficient conductive slurry is fed between the slurry delivery roller 13 and the mold roller 12. The number of nozzles 24 is adjusted according to the length of the mold roller 12. In this embodiment, there are 4 nozzles 24.

[0032] The nozzle 24 has a flat opening, and the width of the opening gradually increases from the inside to the outside to ensure that the conductive paste is evenly distributed between the paste delivery roller 13 and the mold roller 12.

[0033] like Figure 2 As shown, the raw material cylinder 21 is equipped with a first temperature control mechanism 25, which is used to control the temperature of the conductive paste inside the raw material cylinder 21. In this embodiment, the first temperature control mechanism 25 is an insulated box, and the raw material cylinder 21 is placed entirely in the insulated box.

[0034] The slurry tank 11 is equipped with a liquid control mechanism 16, which is used to control the depth of the conductive slurry in the slurry tank 11.

[0035] The liquid control mechanism 16 is equipped with an overflow pipe 161, and a connecting port 162 is provided between the overflow pipe 161 and the slurry tank 11. The position of the connecting port 162 is level with the liquid level in the slurry tank 11. The liquid control mechanism 16 is used to control the depth of the conductive slurry in the slurry tank 11, so as to avoid the liquid level in the slurry tank 11 being too low, which would result in the conductive slurry not filling the printing slot 121 well, and also to avoid the liquid level in the slurry tank 11 being too high, which would cause the slurry to be thrown out of the slurry tank 11.

[0036] The slurry tank 11 is equipped with a second temperature control mechanism 17, which is used to control the temperature of the conductive slurry inside the slurry tank 11. The second temperature control mechanism 17 includes a circulating water pipe 171 and a temperature-controlled water tank 172. The circulating water pipe 171 is located below the slurry tank 11. The temperature-controlled water tank 172 controls the water temperature and drives the water to circulate within the circulating water pipe 171, ensuring a stable temperature of the conductive slurry inside the slurry tank 11. In this embodiment, heat-conducting oil is also filled between the circulating water pipes 171 to ensure uniform temperature of the conductive slurry inside the slurry tank 11.

[0037] like Figure 1 and Figure 2 As shown, the printing device includes a printing mechanism 1, which includes a slurry tank 11, a die roller 12, a slurry delivery roller 13, a pressure roller 14, and a doctor blade 15. The slurry delivery roller 13, the pressure roller 14, and the doctor blade 15 are all attached to the outside of the die roller 12. The slurry delivery roller 13 is located behind the pressure roller 14, and the doctor blade 15 is located between the slurry delivery roller 13 and the pressure roller 14. The printing paper passes between the die roller 12 and the pressure roller 14. The slurry tank 11 contains conductive slurry, and the slurry delivery roller 13 is partially immersed in the conductive slurry. The die roller 12 is rotatably located above the slurry tank 11, and the side of the die roller 12 has a printing groove 121, the shape of which is adapted to the shape of the label.

[0038] Both the pressure roller 14 and the scraper 15 are movable. A cylinder 141 is provided on the outer side of the pressure roller 14, and a swing arm 151 is provided at the rear end of the scraper 15. The cylinder 141 pushes the pressure roller 14 to move inward closer to the mold roller 12 and outward away from the mold roller 12. The swing arm 151 rotates, driving the scraper 15 to move inward closer to the mold roller 12 and outward away from the mold roller 12.

[0039] The printing device also includes a drying mechanism 3 and a take-up mechanism 4. The drying mechanism 3 has a drying chamber 31, and the take-up mechanism 4 has a rotatable take-up roller 41. The drying chamber 31 is located behind the take-up roller 41. The printing paper passes through the drying chamber 31 and is then wound onto the take-up roller 41. In this embodiment, the drying chamber 31 has multiple stages, and the curing effect of the electronic tag can be adjusted by regulating the temperature of the drying chamber 31.

[0040] The printing device works as follows:

[0041] Test paper 5 passes between mold roller 12 and pressure roller 14; swing arm 151 drives doctor blade 15 to swing towards mold roller 12 until it is against mold roller 12; mold roller 12 rotates, driving the transfer roller 13 against mold roller 12 to rotate, conductive paste in the paste trough 14 adheres to the outer side of transfer roller 13 and is fed between transfer roller 13 and mold roller 12, conductive paste fills printing groove 121, doctor blade 13 scrapes the conductive paste adhered to the outer side of mold roller 12 evenly; cylinder 141 drives pressure roller 14 to approach mold roller 12 and presses printing paper 5 onto mold roller 12, conductive paste in printing groove 121 adheres to printing paper 5; printing paper 5 enters drying chamber 31, so that the conductive paste on test paper 6 solidifies and sets, take-up roller 41 is used to wind and collect printing paper with electronic tags printed on it.

[0042] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sizing device for a die roll for applying a conductive paste to the die roll, the die roll having a printing groove formed in an outer side surface thereof, characterized by: The slurry tank is provided with conductive slurry, and the delivery roller is partially immersed in the conductive slurry.

2. The sizing device for a drape roll according to claim 1, characterized in that: The slurry tank is provided with a plurality of nozzles, and the nozzles are uniformly distributed along a direction parallel to the rotation axis of the die roller.

3. The sizing device for a drape roll according to claim 2, characterized in that: The nozzles are provided with flat openings, and the width of the openings gradually increases from inside to outside.

4. The sizing device for a drape roll according to claim 3, characterized in that: The rear end of the nozzles is provided with a pressure pump for increasing the pressure at the nozzles.

5. The sizing device for a mold roll according to claim 3, characterized by: The raw material cylinder is provided with a first temperature control mechanism for controlling the temperature of the conductive slurry in the raw material cylinder.

6. The size press according to any one of claims 2 to 5, characterized in that: The slurry tank is provided with a second temperature control mechanism for controlling the temperature of the conductive slurry in the slurry tank.

7. The size press according to any one of claims 1 to 5, characterized in that: The slurry tank is provided with a liquid control mechanism for controlling the depth of the conductive slurry in the slurry tank.

8. The size press according to any one of claims 1 to 5, characterized in that: The liquid control mechanism is provided with an overflow pipe, and a communication port is provided between the overflow pipe and the slurry tank, and the position of the communication port is level with the liquid surface in the slurry tank.

9. The sizing device for a drape roll according to claim 8, characterized in that: ​

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