WO2010096982A1

WO2010096982A1 - A glue-dipping type braille printing device

Info

Publication number: WO2010096982A1
Application number: PCT/CN2009/073927
Authority: WO
Inventors: 刘俊标; 韩立; 徐鲁宁; 郭少鹏
Original assignee: 中国科学院电工研究所
Priority date: 2009-02-25
Filing date: 2009-09-15
Publication date: 2010-09-02
Also published as: CN101518997B; CN101518997A

Abstract

A glue-dipping type Braille printing device comprises a computer control system and a printing subsystem. The printing subsystem comprises a body (3,4,12), a multi-dimensional moving mechanism(14,15,19) capable of moving in at least two directions, a glue liquor supplying unit(5,17,18), a glue-dipping unit (6,7,8,11), and a curing unit (13). The body comprises a pedestal (3), a bracket (4), and a rotatable platform (12). The glue liquor supplying unit including a glue cartridge (5) is provided on the pedestal (3). The multi-dimensional moving mechanism is secured on the bracket. The glue-dipping unit including a glue-dipping needle (11) is held on the multi-dimensional moving mechanism. The glue-dipping needle (11) can contact with the glue liquor in the glue cartridge (5) till a head portion of the needle is adhered and suspended a little glue liquor, and can contact with a material to be printed (9) so that the glue liquor can be left on the material to be printed (9). The curing unit (13) is placed on the body so as to cure the glue liquor on the material to be printed to form a Braille point. It can be formed a Braille point on an ordinary carrier by the invention, and this kind of Braille point is firm and durable.

Description

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BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to a printing apparatus, and more particularly to a silicone-type Braille printing apparatus for making Braille bumps. Background technique

Persons with disabilities are a group of special difficulties in society. Due to lack of vision, blind people cannot read books, newspapers, etc. like normal people, and can only read and communicate in writing through Braille. The Braille carrier is different from the common ordinary book carrier. The Braille carrier is composed of the printing material and the Braille bumps distributed on the printing material. Therefore, the method and equipment required for making Braille are also different from ordinary printing or printing equipment. .

At present, the domestic Braille output device uses kraft paper as the printing material, and uses mechanical imprinting deformation to realize Braille bump characters. Although this kind of output equipment has provided a variety of books and printed products for many blind people, the Braille output method has the following problems: First, the kraft paper of the printing material needs to be made of good wood pulp raw materials; secondly, printing on the front and back sides or When printing, a special typesetting process is required. Finally, since the Braille points are formed by mechanical embossing, these bumps are easily flattened under heavy pressure or after repeated reading by blind people, making the Braille books difficult to recognize. Or not available, so Braille books obtained with traditional equipment are not durable. These problems make the existing Braille output equipment expensive, need to match special paper and special binding methods, make Braille products costly, low productivity and high labor intensity, so that the economic ability of the general blind can not afford the price of Braille books; And the Braille books produced are very cumbersome. Therefore, the current production and production of domestic Braille books is far from meeting the reading needs of the general blind.

Japanese Patent Specification JP-A-2000-354805A (Publication Date: December 26, 2000) discloses a Braille manufacturing apparatus, comprising a typesetting upper machine and a printing subsystem connected thereto, wherein the typesetting upper computer is a computer, The printing subsystem includes the following devices: a dispensing unit for spotting the curable glue onto the substrate to form a braille bump; a dispensing head position control unit for For controlling the relative position of the dispensing head and the printing material; the displacement control unit for fixing the printing material to control the displacement during the printing process; and the curing unit for curing the heat-curing ink sprayed by the ink to form a Braille print. However, the dispensing unit further includes a nozzle capable of ejecting the coating material, a container accommodating the coating material, and a dedicated crucible for controlling the outflow of the coating material, and the coating can be formed by applying the coating material onto the object to be coated. Braille bumps; therefore, the dispensing unit has a complicated structure, is relatively expensive to manufacture, and is inconvenient to maintain. In addition, the entire Braille manufacturing device has only one dispensing unit, and only one bump can be formed in one spray. According to the national Braille character standard, each character requires 6 dots, one character represents one letter, and a small short text needs Thousands of characters, so using this device, printing a few hundred words of essay may take several hours, work efficiency is quite low; if you add more than one dispensing unit, it will make the entire Braille manufacturing device volume It has become extremely large, costs have increased significantly, and maintenance is inconvenient. Summary of the invention

The technical problem to be solved by the present invention is to provide a silicone-type Braille printing device, which can form a Braille bump conforming to national standards and is durable and durable on a common carrier, and has high production efficiency, low cost and convenience. Produce lightweight and cheap Braille products.

In order to solve the above technical problems, the present invention provides a silicone-type Braille printing device for forming Braille bumps on a printing substrate, including a computer control system and a printing subsystem, the computer control system including a typesetting upper computer and Controlling a drive, the control driver and the print subsystem are electrically connected to each other, the print subsystem comprising:

The body, including the base, the frame and the rotating table;

a multi-dimensional motion mechanism comprising at least two linear motion mechanisms, the multi-dimensional motion mechanism being fixed on the frame;

a glue supply unit, comprising a plastic box for accommodating glue, the glue supply unit being disposed on the base;

a dispensing unit, comprising a silicone needle, the dispensing unit being mounted and fixed to the multi-dimensional movement mechanism, the multi-dimensional movement mechanism enabling the dispensing unit to move in at least two directions, the silicone needle can enter The plastic box, and is in contact with the glue liquid until a small amount of glue is suspended at the needle of the silicone needle;

a curing unit, the curing unit is placed on the body, and the glue supply sheet Separated from each other;

Wherein the rotating table includes a carrying platform for placing the printing material, and when the loading table on which the printing material is placed is operatively moved below the silicone needle, the hanging table has a hanging The glue needle of the dosing glue is in contact with the printing material such that a certain amount of glue adheres to the printing material; when the carrier on which the printing material is placed is operatively moved to the curing The curing unit can cure the glue on the substrate until a braille bump is formed.

Further, the present invention has the following features: the needle of the silicone needle is tapered, and the end plane diameter of the head is 0.6 mm to 0.8 mm; the middle of the silicone needle is provided with a plurality of evenly distributed circumferential directions. IHJ slot and axis guide flow channel.

Further, the present invention has the following features: the dispensing unit further includes an actuator, a mounting bracket and a coupling, wherein the actuator is integrally connected to the silicone needle through the coupling member, and is installed Fixed to the mounting bracket.

Further, the present invention has the following features: the dispensing unit includes at least two or more of the silicone needle, the actuator, and the coupling, and the number of the actuators is not less than the The number of the silicone needles; the distribution of the silicone needles may be an array type, and the distribution pitch of the silicone needles is an integral multiple of the pitch of the Braille characters.

Further, the present invention has the following features: the multi-dimensional motion mechanism is composed of three linear motion mechanisms, which can move the dispensing unit in three directions of X, Υ, Ζ; the rotating table includes at least two The above-mentioned carrying platform, and when one of the carrying platforms is located at a position where the silicone needle can be printed, at least one of the carrying platforms is located below the curing unit; the loading platform is installed in a cantilever manner .

Further, the present invention has the following features: the glue can use an ultraviolet curing glue having a viscosity of 1000 cps ~ 500000 cps; the curing unit can use a multi-wavelength ultraviolet LED light source; the printing material can be ordinary Paper; when the stage on which the printing material is placed is operatively moved below the curing unit, the distance between the curing unit and the printing material is 5 mm to 50 mm.

Further, the present invention has the following features: The glue supply unit further includes a glue heating unit for heating the glue and a liquid temperature measuring unit for measuring the temperature of the glue. Further, the present invention has the following features: The silicone type Braille printing device further includes a liquid amount measuring unit for determining whether the glue liquid is insufficient; the liquid amount measuring unit includes a CCD detector, a laser emitter, and a control circuit Or the liquid amount measuring unit includes a pressure sensor and a signal processing circuit.

Compared with the prior art, the present invention has the following advantages:

A. Because the present invention uses a silicone rubber outer rubber to replace the prior art dispensing adhesive to achieve braille printing, that is, the glue is installed in the outer plastic box, and the silicone needle is first placed as needed. The glue is obtained in the plastic box, and then the glue needle with the glue is brought into contact with the printing material, and the glue is adhered to the printing material to form a Braille bump character after curing, which avoids expensive use. And the slower single-point valve, so the manufacturing cost of the invention is low;

B. Since the silicone needle used in the invention is made according to a certain specification, the process is simple and the cost is low, the head is tapered, the end surface is flat, and a plurality of evenly distributed circumferential grooves and a shaft guiding flow groove are opened. Therefore, the glue can be effectively sucked and the liquid point conforming to the specification can be conveniently adhered on the printing material; and the structure of the rubber needle is small, and it is easy to construct a plurality of plastic head parallel modules, that is, multiple plastic head parallel modules are used. The efficiency of dispensing is improved, and the cost required is also small, so the invention can greatly improve work efficiency on the basis of less cost increase;

C. Since the printing material used in the present invention can be ordinary paper instead of special kraft paper, the manufacturing cost is not only reduced, but also the braille port which is light in weight can be conveniently produced.

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D. Because the invention also uses a plurality of printing stations to work in parallel, that is, one carrying platform can process the Braille printing while the other carrying platform can simultaneously cure the Braille bumps, so the design can also improve the Braille products. Production efficiency;

E. Since the present invention uses an ultraviolet curing glue having a viscosity of 10000 cps to 500000 cps, the curing unit uses a multi-wavelength ultraviolet LED light source, which ensures the robustness and stability of the braille bump, and the invention also increases a glue heating unit for heating the glue, a liquid temperature measuring unit for measuring the temperature of the glue, and a liquid measuring unit for determining whether the glue is insufficient, which is advantageous for using a UV-curing glue of different viscosity;

F. Due to the modular design of the invention, it is convenient to install and disassemble each unit component, and the dispensing, printing and curing processes are carried out independently, and the maintenance is very convenient when the machine fails. DRAWINGS

1 is a schematic structural view of an embodiment of a silicone-type Braille printing apparatus according to the present invention; FIG. 2 is a schematic structural view of a specific embodiment of a liquid amount measuring unit in the present invention; and FIG. 3 is an embodiment of the embodiment shown in FIG. Schematic diagram of measurement principle;

4 is a schematic diagram of a control circuit of the embodiment shown in FIG. 2;

Figure 5 is a front elevational view of an embodiment of a silicone needle in the present invention;

Figure 6 is a top plan view of an embodiment of a silicone needle in the present invention;

Figure 7 is a cross-sectional view taken along line A-A of Figure 5;

Figure 8 is a schematic view of the present invention in which the silicone needle is immersed into the plastic box during the silicone process;

Figure 9 is a schematic view of the present invention in which the silicone needle has been immersed in the plastic box during the silicone process;

Figure 10 is a schematic view of the silicone needle of the present invention in which the glue is suspended from the plastic box during the silicone process;

Figure 11 is a schematic view showing the contact of the silicone needle with the glue suspended in the printing process in the printing process;

Figure 12 is a schematic view of the contact of the silicone needle with the glue suspended in the printing process of the present invention;

Figure 13 is a schematic view of the present invention in the printing process during which the glue has been adhered to the printing material and the silicone needle is moved away from the printing material;

Figure 14 is a schematic illustration of the gelation of the substrate on the substrate during curing in the process of curing into a Braille bump;

Figure 15 is a schematic view showing the structure of another embodiment of the silicone-type Braille printing device of the present invention; Figure 16 is a schematic view showing the operation of the silicone-type Braille printing device of the present invention;

Fig. 17 is a flow chart showing the action of the silicone rubber in the process shown in Fig. 16 and its printing operation on the substrate. detailed description

The present invention will be described in detail below with reference to the drawings and specific embodiments.

As shown in FIG. 1, the silicone-type Braille printing device of the present invention is composed of a computer control system and a printing subsystem, wherein the computer control system includes a typesetting upper computer 1 and a control driver 2, and the typesetting upper computer 1 is configured to convert an ordinary document. Software for Braille documents that conform to national regulations The ordinary PC, the control driver 2 and the printing subsystem are electrically connected to each other through the cable 20. The control driver 2 controls the printing subsystem to complete the corresponding operation according to the received instruction issued by the typesetting machine 1.

The printing subsystem consists of a body, a multi-dimensional motion mechanism, a glue supply unit, a dispensing unit, and a curing unit. Wherein, the body comprises a base 3, a frame 4 and a rotating table 12, and a multi-dimensional moving mechanism is fixedly mounted on the frame 4, the multi-dimensional moving mechanism is composed of an X-direction moving mechanism 15, a Y-direction moving mechanism 19 and a Z-direction moving mechanism 14. The three moving mechanisms are composed of a linear guide, a lead screw, a coupling and a motor, and are placed perpendicular to each other, the Y-direction moving mechanism 19 is mounted on the frame 4, and the X-direction moving mechanism 15 is mounted on the Y-direction moving mechanism. On the 19th, the Z-direction moving mechanism 14 is mounted on the X-direction moving mechanism 15 to realize linear motion in the three-dimensional direction. Although the embodiment of the present specification employs a multi-dimensional motion mechanism composed of three linear motion mechanisms, the multi-dimensional motion mechanism of the present invention may also be composed of two motion mechanisms, but only must have a motion direction that can move in the vertical direction. The example can be composed of an X-direction motion mechanism and a Z-direction motion mechanism, or a Y-direction motion mechanism and a z-direction motion mechanism.

A dispensing glue unit is fixedly mounted on the Z-direction moving mechanism 14, and the dispensing unit is composed of an actuator 8, a mounting bracket 7, a coupling member 6, and a silicone needle 11, wherein the mounting bracket 7 is fastened to the Z-direction moving mechanism 14. The actuator 8 can be an electromagnetic actuator mounted on the mounting bracket 7 and connected to the silicone needle 11 via the coupling member 6, the separation of the actuator and the silicone needle. The design not only facilitates the maintenance and cleaning of the silicone needle, but also makes it easy to form a plurality of silicone needles into a module, such as an array of silicone needle modules. The distribution pitch of the silicone needles is arranged in integer multiples of the Braille character spacing. For example, the braille character spacing can be 2.5mm, and the dispensing pitch of the silicone needle is 7.5mm. As shown in Figure 1, 7 rubber needles are combined into an array, and each glue needle is printed in a Braille character. According to national regulations, a Braille character is represented by 6 Braille bumps, so each glue needle is to be completed 6 The secondary silicone and printing process can produce a Braille character, and 7 silicone needles can simultaneously generate 7 Braille characters; if arranged in a 7 x 7 array, 49 Braille characters can be generated simultaneously. Greatly improve work efficiency. In addition, a sufficient number of actuators 8 can be mounted and fixed on the mounting bracket 7 in advance, and the silicone needle 11 can be temporarily disposed according to the requirements of the printed page, and the coupling member 6 can be conveniently installed and disassembled.

A glue supply unit is mounted on the base 3, and the glue supply unit is used for accommodating the glue a glue box 5, a glue heating unit 18 for heating the glue, and a liquid temperature measuring unit 17 for measuring the temperature of the glue, wherein the glue heating unit 18 and the liquid temperature measuring unit 17 are placed under the plastic box 5, When the liquid temperature measuring unit 17 measures that the temperature of the glue in the plastic box 5 is less than a predetermined value, the glue heating unit 18 starts to work, so that the temperature of the glue in the plastic box 5 rises; when the liquid temperature is measured When the unit 17 measures that the temperature of the glue in the plastic box 5 is greater than a predetermined value, the glue heating unit 18 stops working, and the glue box 5 is open, and the glue can be naturally cooled, thereby ensuring the inside of the plastic box. The glue is always in a certain temperature range, which is determined by the properties of the glue and can be preset.

In addition, the rotary table 12 includes two loading platforms 10 on which the printing material 9 can be placed. The printing material 9 can be any material suitable for glue bonding, such as ordinary paper; and the loading platform 10 cantilever The beam is installed in order to improve the elasticity of the loading platform 10, so as to buffer the impact generated when the silicone needle 11 is in contact with the printing material 9 during the printing process, thereby achieving the purpose of protecting the silicone needle 11, thereby ensuring Braille Stability of bump formation; When one of the stages 10 is located at a position where the glue needle 11 can be printed, the other stage is located below the curing unit.

The curing unit is arranged on the body, and the multi-wavelength ultraviolet LED light source 13 can be used, and the glue can use the ultraviolet curing glue with the viscosity of 10000 cps to 50000 cps, the temperature range is 25 ~ 100 °C, and the ultraviolet LED light source 13 and The distance between the printing materials 9 is 5 mm to 50 mm, preferably 5 mm.

Therefore, the silicone needle 11 can enter the plastic box 5 under the driving of the multi-dimensional motion mechanism, and the glue is pulled down to suspend a certain amount of glue at the needle; or the loading platform 10 can be driven by the multi-dimensional motion mechanism. The upper printing material 9 is in contact with each other so that a small amount of glue adheres to the printing material 9; the ultraviolet LED light source 13 can cure the glue on the printing material 9 until a Braille bump is formed. Among them, the silicone, printing and curing processes can be carried out independently at the same time, thereby greatly improving the production efficiency.

As the silicone needle continuously draws the glue from the plastic box, although the amount is small each time, after completing dozens of pages of printing, the glue level in the plastic box may drop to a certain distance. However, in the present invention, the stroke of the silicone rubber action is preset according to the national standard of the Braille bump, and the standard value is obtained after the experiment. If the glue surface drops to the silicone needle, a sufficient amount of glue cannot be obtained. At this time, the silicone needle cannot leave the standard Braille point on the printing material, and thus cannot be cured into a standard Braille bump, so in order to ensure the consistency and stability of the formed Braille bump, The invention further includes a liquid amount determining unit 16 for determining whether the glue is insufficient, the liquid amount measuring unit may include a laser emitter 1602 and a CCD processing unit 1601, and the two components are respectively mounted on opposite sides of the plastic box, as shown in picture 2.

The principle of measurement is shown in Fig. 3. At the beginning, the beam emitted by the laser emitter 1602 is reflected by the glue surface, and the CCD processing unit 1601 can obtain the relative position A of the reflected light. If the displacement of the glue surface is d, the CCD processing unit 1601 The relative position B of the reflected light can be obtained; the two signal positions are compared, and the displacement amount d can be obtained by geometric conversion. If the incident angle of the beam is ", the CCD processing unit is perpendicular to the reflected beam, and T is in the CCD processing unit 1601. The distance between point A and point B on the CCD unit, the conversion formula is as follows:

T = d I cos a * sin 2a = 2d sin a

From the above formula, the height of the falling of the glue surface can be accurately obtained based on the value of T.

In addition, as shown in FIG. 4, the CCD processing unit 1601 is composed of a CCD detector and a control circuit, and the control circuit includes an amplification filter circuit, a floating threshold binarization processing unit, a central controller, a CCD driving circuit, and a measurement display output unit. . Among them, the CCD detector uses TCD1208, a total of 2160 units, the pixel unit is 14um 14um, and the pixel units are arranged in an overlapping manner, so there is no gap. It should be noted that the TCD1208 window is also exposed to natural light and will also output saturation, so a CCD detector is covered with a filter to avoid saturation caused by the background light. The components in the control circuit can be made using devices and devices known to those skilled in the art. For example, the central controller of the control circuit can use TI's 430 series single chip MSP430F149, and the CCD drive circuit can use the chip 74LVC4245. . The control circuit detects that the TCD1208 is driven by four logic driving signals, the output pin OS outputs a pulse signal that is modulated by light, that is, a digital video signal, and the other output pin DOS outputs a standard reference signal; the two signals are amplified. After filtering, difference calculation and amplification of the filter circuit, the optical signal of the CCD detector is obtained. This signal is obtained by the binarization processing of the floating threshold binarization processing unit to obtain a waveform signal that can be captured by the central controller, and then the central controller Determine the position of the CCD where the light signal is located, such as point A or point B, calculate the position of the glue surface according to the corresponding formula calculation, and further determine whether the glue is sufficient. Finally, the measurement output unit outputs the measurement result. The central controller can also control the activation of the CCD drive circuit to sequentially drive the individual pixel units of the CCD detector. The silicone needle of the present invention has a special structure as shown in Figures 5, 6 and 7. The needle of the silicone needle is tapered, because the tapered head can ensure the contact point size of the contact point after the contact between the silicone needle and the printing material which is suspended with a small amount of glue meets the specifications of the Braille bump, and Does not reduce the strength of the silicone needle. The diameter of the end plane of the head is 0.6mm ~ 0.8mm. This is because when the silicone needle is in contact with the printing material, the diameter of the bump formed will be larger than the diameter of the original contact point due to the wetting and expansion of the glue on the printing material. Large, so the end plane diameter of the head is smaller than the Braille point to be made. In addition, a plurality of circumferential grooves and a shaft guide flow groove are provided in the middle of the silicone needle, because the circumferential groove helps to hang more high-viscosity glue; the axial guide flow groove has Helps transfer high viscosity glue from the silicone needle to the substrate. Since the silicone needle and the actuator are connected by a coupling member, it is easy to disassemble, so the silicone needle can be cleaned in various ways, such as using ultrasonic waves to clean the silicone needle.

The silicone, printing and curing process of the silicone-type Braille printing device of the present invention is shown in Figures 8, 9, 10, 11, 12, 13 and 14. Fig. 8 shows that the silicone needle 11 is immersed downward into the plastic case 5 containing the glue during the silicone process. Fig. 9 shows that the silicone needle 11 has been immersed in the plastic case 5 during the silicone process. Generally, the silicone needle 11 can be immersed to a depth of 1 mm to 5 mm, preferably 2 mm. Figure 10 shows that during the silicone process, the glue needle 11 with the glue adhered upwards away from the glue box 5 and is ready to move above the printing material 9. Fig. 11 shows that the silicone needle 11 to which the glue is suspended is in contact with the printing material 9 placed on the stage 10 in the printing process. Figure 12 shows that during the printing process, the silicone needle 11 with the glue adhered is in contact with the printing material 9, a predetermined amount of glue has been adhered to the printing material 9, and the silicone needle 11 is prepared to be moved upwards away from the printing material. 9. Fig. 13 shows that the printing material 9 has adhered to the printing material during the printing process, and the silicone needle 11 has been moved away from the printing material 9, and the glue point 30 to be solidified has been adhered to the printing material 9. Figure 14 shows that during the curing process, the glue point 30 on the printing material 9 is solidified into a Braille bump by the action of the curing unit.

Figure 15 is a schematic view showing the structure of another embodiment of the silicone-type Braille printing device of the present invention. In this configuration, the liquid amount measuring unit of another embodiment is used, that is, the liquid amount measuring unit is composed of a pressure sensor. 21 is composed of a signal processing circuit, and the pressure sensor 21 and the signal processing circuit are electrically connected to each other. The pressure sensor 21 is disposed under the glue supply unit, and the change of the liquid amount is determined by measuring the total weight of the plastic box, that is, the liquid level drop of the glue means that the amount of the glue in the plastic box is reduced, and the weight of the entire plastic box is further Also becomes smaller at the same time, when the measured importance is less than a certain value, the signal The processing circuit will provide a warning signal for the operator to add glue.

The working process of the silicone-type Braille printing device of the present invention is as shown in FIG. 16 and includes the following steps: Step 101: Start the system, and initialize each component unit and each configuration parameter; Step 102, the operator uses the typesetting upper computer to select the printing required. Document

Step 103: The Braille conversion software of the typesetting upper machine converts the required print file into a Braille document;

Step 104, the operator sets various printing parameters, such as a printing range;

Step 105, the typesetting upper computer generates the action command of each of the glue needles and the displacement amount thereof according to the distribution of the print parameters according to the distribution of the glue needle modules on the dispensing unit;

Step 106, the typesetting upper machine sends an action command to the actuator by controlling the driver; Step 107, the typesetting upper machine sends the displacement amount (ie, the displacement amount moved in multiple directions) to the multi-dimensional motion mechanism by controlling the driver, step 107 may Simultaneously with step 106; Step 108, the silicone needle module is driven by the multi-dimensional motion mechanism to move over the plastic box, and complete the silicone action; then, under the driving of the multi-dimensional motion mechanism, move to the top of the printing material, and complete Dispensing print work;

Step 109: The rotating table rotates the loading platform on which the printing material is placed to the curing unit, and the curing unit solidifies the glue point on the printing material to form a Braille bump;

Step 110, taking out the printing material, and the operator performs corresponding inspection;

Step 111, the printing is completed, the new printing material is prepared, and the printing is started again. Figure 17 shows a further refinement of step 108. The step 108 includes the following steps: Step 201: The control driver sends an action command and a displacement amount to the actuator and the multi-dimensional motion mechanism to implement setting of the two;

Step 202: The liquid amount determining unit detects whether the glue in the plastic box is sufficient, and sends a corresponding liquid level position signal to the control driver, and the control driver determines whether the position of the glue surface exceeds a preset range, and if it is within the range, indicating If the amount of glue is sufficient, then step 203 is performed, otherwise step 206 is performed;

Step 203, the multi-dimensional motion mechanism drives the dispensing unit to move over the plastic box, and the actuator pushes the silicone needle module down into the plastic box, and the needle tip is immersed into the 2 mm; then, the multi-dimensional motion mechanism moves the silicone needle module upwards away from the glue. Box, complete the silicone action; Step 204, the multi-dimensional motion mechanism drives the dispensing unit to move above the carrying platform, and the actuator contacts the silicone needle module downwardly to the printing material on the carrying platform, so that a certain amount of glue adheres to the printing material; then, the multi-dimensional The moving mechanism moves the silicone needle module upwards away from the plastic box to complete the printing action;

Step 205, the control driver determines whether the print content is completed, if not completed, return to step 201, otherwise step 208;

Step 206: The control driver further determines whether the position of the glue liquid surface is lower than a preset limit value. If it is lower, it indicates that the glue liquid quantity is seriously insufficient. Perform step 207. Otherwise, the glue amount is slightly insufficient, but it can be adjusted. The distance between the glue needle and the glue surface is compensated, so that the control driver feeds back the signal, so that the control driver re-adjusts the displacement of the multi-dimensional motion mechanism, and step 201 is performed;

Step 207, the control driver issues an alarm, prompting the operator to add glue, and all tasks are stopped;

Step 208, the printing process ends.

Claims

Rights request

A silicone-type Braille printing device for forming a Braille bump on a printing material, comprising a computer control system and a printing subsystem, the computer control system comprising a typesetting upper machine and a control driver, the control driver and The printing subsystems are electrically connected to each other, and the printing subsystem comprises:

The body, including the base, the frame and the rotating table;

a dispensing unit, comprising a silicone needle, the dispensing unit being mounted and fixed on the multi-dimensional movement mechanism, wherein the multi-dimensional movement mechanism enables the dispensing unit to move in at least two directions, the silicone needle can be Entering the plastic box and contacting the glue liquid until a certain amount of glue is suspended at the needle of the silicone needle;

a curing unit, the curing unit is placed on the body and separated from the glue supply unit;

Wherein the rotating table includes a carrying platform for placing the printing material, and when the loading table on which the printing material is placed is operatively moved below the silicone needle, the hanging table has a hanging The glue needle of the dosing glue is in contact with the printing material such that a predetermined amount of glue adheres to the printing material; when the carrier on which the printing material is placed is operatively moved to the curing The curing unit can cure the glue on the substrate until a braille bump is formed.

The silicone-type Braille printing device according to claim 1, wherein: the needle of the silicone needle is tapered, and the end plane diameter of the head is 0.6 mm to 0.8 mm; The central portion is provided with a plurality of evenly distributed circumferential grooves and an axial guide flow groove.

3. The silicone-type Braille printing apparatus according to claim 2, wherein: said dispensing unit further comprises an actuator, a mounting bracket and a coupling, said actuator passing said coupling member and said The silicone needle is integrated and mounted to the mounting bracket.

4. The silicone-type Braille printing apparatus according to claim 3, wherein: said dispensing unit comprises at least two or more of said silicone needles, said actuator and said coupling member, said The number of actuators is not less than the number of the silicone needles; the distribution of the silicone needles may be an array type, and the distribution pitch of the silicone needles is an integral multiple of the pitch of the Braille characters.

The silicone-type Braille printing apparatus according to claim 4, wherein: the multi-dimensional movement mechanism is composed of three linear motion mechanisms, and the dispensing unit can be arranged in three directions of X, Y, and Ζ Moving; the rotating table includes at least two or more of the carrying platforms, and when one of the carrying stations is located at a position where the dispensing needle is printable, at least one of the carrying platforms is located below the curing unit The carrier is mounted in a cantilever manner.

The silicone-type Braille printing device according to claim 5, wherein: the glue liquid has a viscosity of 10000 cps to 500000 cps, and the curing unit uses a multi-wavelength ultraviolet LED light source; The printing material is a common paper; when the loading platform on which the printing material is placed is operatively moved below the curing unit, the distance between the curing unit and the printing material is 5 mm ~ 50mm.

7. The silicone-type Braille printing apparatus according to claim 6, wherein: the glue supply unit further comprises a glue heating unit for heating the glue and a liquid temperature measuring unit for measuring the temperature of the glue. .

The silicone-type Braille printing apparatus according to claim 7, wherein the silicone-type Braille printing apparatus further includes a liquid amount measuring unit for determining whether the glue is insufficient.

9. The silicone-type Braille printing apparatus according to claim 8, wherein: said liquid amount measuring unit comprises a CCD detector, a laser emitter and a control circuit, and said CCD detector detects said laser emitter And emitting a light beam reflected by the glue surface in the plastic box, and outputting a signal to the control circuit, and the control circuit determines whether the glue liquid is insufficient according to the signal output by the CCD detector.

A silicone-type Braille printing apparatus according to claim 8, wherein: said liquid amount measuring unit comprises a pressure sensor and a signal processing circuit electrically connected to each other.