Braille dot character pattern marking press

Abstract

The utility model provides a braille character pattern marking press, which is characterized in that a moving mechanism comprises a first moving module for driving a marking head to move along a Y-axis direction and a second moving module for driving the marking head to move along an X-axis direction, and the first moving module comprises two roller guide rail mechanisms which are arranged in pairs; the roller guide rail mechanism comprises a roller support, a first guide rail, a first motor, a first synchronous wheel, a first toothed belt and four first pressure-bearing rollers, and the first synchronous wheel is driven by the first motor to rotate. The first guide rail is in rolling connection by adopting a mode of clamping a plurality of pressure-bearing rollers, so that the roller bracket can obliquely move along the Y-axis direction at variable intervals, the moving precision of the engraving head of the braille engraving machine on a two-dimensional plane is effectively improved, the integrity of braille dot patterns engraved by the engraving head is ensured, and the accuracy of the braille dot patterns is improved. And the printing head can stably stamp braille alphabets in an inclined and variable-spacing moving manner so as to realize image-text mixed arrangement.

Description

Technical Field

[0001] The utility model belongs to the technical field of processing and manufacturing of Braille engraving equipment, in particular to a Braille graphic engraving machine. Background Art

[0002] Braille, also known as dot characters or embossed characters, is a type of text that is designed for the blind to read and write. It is a tool for the blind to learn and read. The blind read knowledge and obtain relevant information by touching the Braille characters. During the engraving process, the Braille engraving machine needs to use a moving mechanism to drive the engraving head to move on a two-dimensional plane. At present, the moving mechanism used by the Braille engraving machine not only has the defects of large friction resistance and easy wear, but also is prone to problems such as poor stability and low movement accuracy, which reduces the accuracy of the Braille engraving machine's engraving head moving on a two-dimensional plane, resulting in a significant decrease in the engraving quality of the Braille engraving machine. Utility Model Content

[0003] Based on the above-mentioned problems existing in the prior art, one of the purposes of the embodiments of the utility model is to provide a Braille graphic engraving machine to solve the problem that the moving mechanism of the Braille engraving machine in the prior art has large friction resistance, poor stability and low moving accuracy, resulting in the engraving head of the Braille engraving machine being unable to perform high-precision oblique and variable-pitch moving engraving Braille on a two-dimensional plane to achieve mixed typesetting of images and texts.

[0004] In order to achieve the above object, the technical solution adopted by the utility model is: to provide a Braille graphic engraving machine, comprising:

[0005] An engraving table for carrying paper on which Braille graphics can be engraved;

[0006] An engraving head is used for engraving the braille convex dots constituting the braille pattern on the paper;

[0007] A moving mechanism, used for driving the imprinting head to move two-dimensionally on a two-dimensional plane parallel to the paper, the moving mechanism comprising a first moving module for driving the imprinting head to move along the Y-axis direction and a second moving module for driving the imprinting head to move along the X-axis direction; and

[0008] An electromagnetic actuation mechanism connected to the imprinting head, the electromagnetic actuation mechanism is used to drive the imprinting head to move along the Z-axis direction, so as to realize the action of imprinting the braille convex dots by the imprinting head and retracting the imprinting head after imprinting is completed;

[0009] Among them, the first movable module includes two roller guide rail mechanisms arranged in pairs, and the roller guide rail mechanisms include a roller bracket, a first guide rail, a first motor, a first synchronous wheel, a first toothed belt and four first pressure rollers. The first guide rail is arranged on the imprinting table, and two first pressure rollers are respectively arranged on the upper and lower sides of the first guide rail. The rolling surface of each first pressure roller is in rolling contact with the first guide groove on the corresponding side surface of the first guide rail. The first motor is arranged on the roller bracket, the first synchronous wheel is connected to the output shaft of the first motor, and the tooth portion of the first toothed belt is meshed with the tooth portion on the first synchronous wheel, so that when the first motor drives the first synchronous wheel to rotate, the roller bracket can move along the Y-axis direction; the first movable module is respectively connected to the roller brackets of the two roller guide rail mechanisms, and the electromagnetic actuating mechanism is connected to the first movable module.

[0010] Furthermore, the first toothed belt is a linear synchronous belt, both ends of the first toothed belt are respectively fixed on the first guide rail, the first synchronous wheel is arranged between the two first pressure rollers located on the same side of the first guide rail, and the two first pressure rollers located on the same side of the first guide rail press the first toothed belt into the first guide groove so that the first motor is connected to the first pressure roller by transmission.

[0011] Furthermore, the roller guide rail mechanism also includes four first pressure roller shafts installed on the roller bracket for rotating the four first pressure rollers respectively, a first limiting sleeve sleeved on each of the first pressure roller shafts, and a locking sleeve sleeved on the first pressure roller shaft, and each of the first pressure rollers is clamped between the corresponding first limiting sleeve and the corresponding locking sleeve.

[0012] Furthermore, the roller guide mechanism also includes a motor cover, which is arranged on the roller bracket, and the first motor is located in the motor cover.

[0013] Furthermore, the first guide groove is a trapezoidal groove or a V-shaped groove in cross section, and the roller surface of the first pressure roller is provided with a trapezoidal protrusion or a V-shaped protrusion matching the first guide groove, and the trapezoidal protrusion or the V-shaped protrusion is in rolling contact with the trapezoidal groove or the V-shaped groove.

[0014] Furthermore, the second movable module includes a slide, a second guide rail, a second motor, a second synchronous wheel, a second toothed belt and four second pressure rollers, two second pressure rollers are respectively provided on both sides of the second guide rail, and the rolling surface of each second pressure roller is in rolling contact with the second guide groove on the corresponding side of the second guide rail. The second motor is arranged on the slide, the second synchronous wheel is connected to the output shaft of the second motor, and the teeth of the second toothed belt are meshed with the teeth on the second synchronous wheel, so that when the second motor drives the second synchronous wheel to rotate, the slide can move along the X-axis direction; the two ends of the second guide rail are respectively connected to the two roller brackets, and the electromagnetic actuating mechanism is connected to the slide.

[0015] Furthermore, the second toothed belt is a linear synchronous belt, both ends of the second toothed belt are respectively fixed on the second guide rail, the second synchronous wheel is arranged between the two second pressure rollers located on the same side of the second guide rail, and the two second pressure rollers located on the same side of the second guide rail press the second toothed belt into the second guide groove so that the second motor is connected to the second pressure roller for transmission.

[0016] Furthermore, the second movable module also includes four second roller shafts for rotating the four second pressure rollers respectively installed on the slide table and two second limiting sleeves sleeved on each of the second roller shafts, and each of the second pressure rollers is clamped between the corresponding two second limiting sleeves.

[0017] Furthermore, the second moving module also includes a limiting plate for limiting the four second roller shafts, the first end of each second roller shaft is connected to the slide table, and the second end of each second roller shaft is connected to the limiting plate.

[0018] Furthermore, the electromagnetic actuation mechanism includes a fixed seat fixedly connected to the slide table of the second movable module, a moving magnet for driving the engraving head to move along the Z-axis direction, an electromagnet for interacting with the moving magnet to drive the moving magnet to move along the Z-axis direction and downward, and an elastic member for driving the moving magnet to move upward and reset along the Z-axis direction, the electromagnet is fixedly arranged on the fixed seat, and the moving magnet can be slidably arranged on the fixed seat along the Z-axis direction.

[0019] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0020] The Braille graphic engraving machine in the embodiment of the utility model, the moving mechanism includes a first moving module for driving the engraving head to move along the Y-axis direction and a second moving module for driving the engraving head to move along the X-axis direction, the first moving module includes two roller guide rail mechanisms arranged in pairs, the roller guide rail mechanisms include a roller bracket, a first guide rail, a first motor, a first synchronous wheel, a first toothed belt and four first pressure-bearing rollers, the first synchronous wheel is driven to rotate by the first motor, because the roller bracket is rollingly supported on the first guide rail by the four first pressure-bearing rollers, and the first guide rail adopts a plurality of pressure-bearing rollers to clamp to achieve rolling connection, effectively reducing friction, so that the roller bracket can move smoothly and stably along the Y-axis direction, improving the moving speed and moving accuracy of the engraving head along the Y-axis direction, thereby effectively improving the moving accuracy of the engraving head of the Braille engraving machine on the two-dimensional plane, which is conducive to ensuring that the dot matrix Braille graphic engraved by the engraving head has good integrity, uniform arrangement of the Braille convex dot matrix, and smoothness of the Braille convex dot matrix lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 A three-dimensional structural schematic diagram of the Braille graphic engraving machine provided by the utility model;

[0023] Figure 2 A schematic diagram of the three-dimensional structure of the roller guide mechanism provided by the utility model;

[0024] Figure 3 An exploded view of the roller guide mechanism provided by the utility model;

[0025] Figure 4 An assembly diagram of the first pressure roller and the roller bracket provided by the utility model;

[0026] Figure 5 An assembly diagram of the second movable module and the electromagnetic actuation mechanism provided by the utility model;

[0027] Figure 6 Another assembly diagram of the second movable module and the electromagnetic actuation mechanism provided by the utility model;

[0028] Figure 7 A schematic diagram of the structure of the electromagnetic actuation mechanism provided by the utility model;

[0029] Figure 8Another three-dimensional structural schematic diagram of the Braille graphic engraving machine provided by the utility model.

[0030] Among them, the reference numerals in the figure are:

[0031] 1-imprinting table; 2-imprinting head;

[0032] 3-first moving module; 31-roller bracket; 32-first guide rail; 321-first guide groove; 33-first motor; 34-first synchronous wheel; 35-first toothed belt; 36-first pressure roller; 361-protrusion; 37-first roller shaft; 38-first limit sleeve; 39-locking sleeve; 30-motor cover;

[0033] 4-second moving module; 41-slide; 42-second guide rail; 421-second guide groove; 43-second motor; 44-first synchronous wheel; 45-second synchronous wheel; 46-second pressure roller; 47-second limiting sleeve; 48-limiting plate;

[0034] 5-electromagnetic actuating mechanism; 51-fixed seat; 511-accommodating chamber; 52-moving magnet; 53-electromagnet; 54-elastic member. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a dedicated orientation, be constructed and operated in a dedicated orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] Reference throughout the specification to "one embodiment" or "an embodiment" means that the specialized features, structures, or characteristics described in connection with the embodiment are included in at least one embodiment of the present application. Thus, the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all of which refer to the same embodiment. Furthermore, in one or more embodiments, the specialized features, structures, or characteristics may be combined in any suitable manner.

[0041] Please also read Figures 1 to 8Now, the Braille pattern engraving machine provided by the embodiment of the utility model is described. The Braille pattern engraving machine provided by the embodiment of the utility model comprises an engraving table 1, an engraving head 2, a moving mechanism and an electromagnetic actuating mechanism 5. The engraving table 1 is used to carry paper on which Braille patterns can be engraved. The engraving head 2 is used to engrave Braille convex dots constituting the Braille pattern on the paper. The moving mechanism is used to drive the engraving head 2 to perform two-dimensional movement on a two-dimensional plane parallel to the paper. The electromagnetic actuating mechanism 5 is connected to the engraving head 2, and the electromagnetic actuating mechanism 5 is used to drive the engraving head 2 to move along the Z-axis direction to realize the action of the engraving head 2 engraving the Braille convex dots and retracting after the engraving is completed. The moving mechanism includes a first moving module 3 for driving the engraving head 2 to move along the Y-axis direction and a second moving module 4 for driving the engraving head 2 to move along the X-axis direction. The first moving module 3 includes two roller guide rail mechanisms arranged in pairs. The roller guide rail mechanisms include a roller bracket 31, a first guide rail 32, a first motor 33, a first synchronous wheel 34, a first toothed belt 35 and four first pressure rollers 36. The first guide rail 32 is arranged on the engraving table 1. Two first pressure rollers 36 are respectively arranged on the upper and lower sides of the first guide rail 32. The rolling surface of each first pressure roller 36 is in rolling contact with the first guide groove 321 on the corresponding side surface of the first guide rail 32. The first motor 33 is arranged on the roller bracket 31. The first synchronous wheel 34 is connected to the output shaft of the first motor 33. The tooth portion of the first toothed belt 35 is meshed with the tooth portion on the first synchronous wheel 34. When the Braille pattern engraving machine provided by the embodiment of the utility model is working, the first synchronous wheel 34 is driven to rotate by the first motor 33. Since the roller bracket 31 is rollingly supported on the first guide rail 32 by the four first pressure rollers 36, the roller bracket 31 can move along the Y-axis direction, thereby driving the engraving head 2 to move along the Y-axis direction. At the same time, the second moving module 4 for driving the engraving head 2 to move along the X-axis direction is respectively connected to the roller brackets 31 of the two roller guide rail mechanisms, and the electromagnetic actuating mechanism 5 for driving the engraving head 2 to move along the Z-axis direction is connected to the first moving module 3, and the engraving head 2 is connected to the electromagnetic actuating mechanism 5, so that the engraving head 2 can perform two-dimensional movement on a two-dimensional plane parallel to the paper, and the electromagnetic actuating mechanism 5 is used to control the engraving head 2 to engrave braille convex dots and retract after engraving, so as to achieve uniform and complete dot matrix Braille pattern engraving on the paper.

[0042] Compared with the prior art, the Braille graphic engraving machine provided by the embodiment of the utility model comprises a moving mechanism including a first moving module 3 for driving the engraving head 2 to move along the Y-axis direction and a second moving module 4 for driving the engraving head 2 to move along the X-axis direction. The first moving module 3 comprises two roller guide rail mechanisms arranged in pairs. The roller guide rail mechanisms comprise a roller bracket 31, a first guide rail 32, a first motor 33, a first synchronous wheel 34, a first toothed belt 35 and four first pressure rollers 36. The first synchronous wheel 34 is driven to rotate by the first motor 33. Since the roller bracket 31 The first guide rail 32 is supported by four first pressure rollers 36 in a rolling manner, and the first guide rail 32 is connected in a rolling manner by clamping multiple pressure rollers, which effectively reduces friction, so that the roller bracket 31 can move smoothly and stably along the Y-axis direction, improve the moving speed and moving accuracy of the engraving head 2 along the Y-axis direction, thereby effectively improving the moving accuracy of the engraving head 2 of the Braille engraving machine on the two-dimensional plane, which is conducive to ensuring that the dot matrix Braille word pattern engraved by the engraving head 2 has good integrity, uniform arrangement of the Braille convex dot matrix, and smoothness of the Braille convex dot matrix lines. In addition, the roller bracket 31 can move obliquely and with variable spacing along the Y-axis direction, so that the Braille engraving machine can engrave Braille obliquely and with variable spacing to achieve mixed text and image arrangement. In addition, the engraving head 2 can engrave Braille obliquely and with variable spacing with high precision, so that the Braille word pattern engraving machine can achieve mixed text and image arrangement.

[0043] Please refer to Figure 1 , Figure 2 and Figure 3 In some embodiments, the first toothed belt 35 is a linear synchronous belt, both ends of the first toothed belt 35 are respectively fixed on the first guide rail 32, a first synchronous wheel 34 is arranged between the two first pressure rollers 36 located on the same side of the first guide rail 32, and the two first pressure rollers 36 located on the same side of the first guide rail 32 press the first toothed belt 35 into the first guide groove 321, so that the first motor 33 is connected to the first pressure roller 36 by transmission. In this embodiment, when the first motor 33 drives the first synchronous wheel 34 to rotate, since the two ends of the first toothed belt 35 are respectively fixed on the first guide rail 32, the reaction force of the first synchronous wheel 34 drives the first motor 33 and the roller bracket 31 to move, and the roller bracket 31 is rollingly supported on the first guide rail 32 by four first pressure rollers 36, and the first toothed belt 35 is pressed into the first guide groove 321 by two first pressure rollers 36 located on the same side of the first guide rail 32, so that the roller bracket 31 can smoothly drive the engraving head 2 to move with high precision, and can ensure the stability of the high-speed operation of the roller bracket 31, and reduce the noise generated when the roller bracket 31 runs at high speed.

[0044] Please refer to Figure 2 , Figure 3 and Figure 4In some embodiments, the roller guide mechanism further includes four first roller shafts 37 for rotating and mounting the four first pressure rollers 36 on the roller bracket 31, a first limiting sleeve 38 sleeved on each first roller shaft 37, and a locking sleeve 39 sleeved on the first roller shaft 37, and each first pressure roller 36 is sandwiched between the corresponding first limiting sleeve 38 and the corresponding locking sleeve 39. The above-mentioned structural arrangement can prevent the first pressure roller 36 from tilting and swaying during the rolling process, thereby affecting the stability of the high-speed operation of the roller bracket 31.

[0045] Please refer to Figure 8 In some of the embodiments, in order to protect the first motor 33 , the roller guide mechanism further includes a motor cover 30 , the motor cover 30 is disposed on the roller bracket 31 , and the first motor 33 is located in the motor cover 30 .

[0046] Please refer to Figure 2 and Figure 4 In some embodiments, the first guide groove 321 is a trapezoidal groove or a V-shaped groove in cross section, and the roller surface of the first pressure roller 36 is provided with a trapezoidal protrusion 361 or a V-shaped protrusion 361 matching the first guide groove 321. The trapezoidal protrusion 361 or the V-shaped protrusion 361 is in rolling contact with the trapezoidal groove or the V-shaped groove, which can further prevent the first pressure roller 36 from tilting and swaying during rolling and affecting the stability of the high-speed operation of the roller bracket 31.

[0047] Please refer to Figure 5 and Figure 6In some embodiments, the second moving module 4 includes a slide 41, a second guide rail 42, a second motor 43, a second synchronous wheel 44, a second toothed belt 45 and four second pressure rollers 46. Two second pressure rollers 46 are respectively provided on both sides of the second guide rail 42. The rolling surface of each second pressure roller 46 is in rolling contact with the second guide groove 421 on the corresponding side of the second guide rail 42. The second motor 43 is arranged on the slide 41, the second synchronous wheel 44 is connected to the output shaft of the second motor 43, the tooth portion of the second toothed belt 45 is meshed with the tooth portion on the second synchronous wheel 44, and the second synchronous wheel 44 is driven to rotate by the second motor 43. Since the slide 41 passes through the four second pressure rollers 46, the second pressure rollers 46 are respectively provided on both sides of the second guide rail 42. The two pressure rollers 46 are rollingly supported on the second guide rail 42, so that the slide 41 can move along the X-axis direction, thereby driving the engraving head 2 to move along the X-axis direction. At the same time, the two ends of the second guide rail 42 are respectively connected to the roller brackets 31 of the two roller guide rail mechanisms. The electromagnetic actuating mechanism 5 for driving the engraving head 2 to move along the Z-axis direction is connected to the slide 41 of the second movable module 4, and the engraving head 2 is connected to the electromagnetic actuating mechanism 5, so that the engraving head 2 can perform two-dimensional movement on a two-dimensional plane parallel to the paper, and the electromagnetic actuating mechanism 5 is used to control the engraving head 2 to engrave the braille dots and retract after the engraving is completed, so as to achieve the engraving of a uniform and complete dot matrix braille pattern on the paper.

[0048] Please refer to Figure 5 In some embodiments, the second toothed belt 45 is a linear synchronous belt, both ends of the second toothed belt 45 are respectively fixed on the second guide rail 42, a second synchronous wheel 44 is arranged between two second pressure rollers 46 located on the same side of the second guide rail 42, and the two second pressure rollers 46 located on the same side of the second guide rail 42 press the second toothed belt 45 into the second guide groove 421 so that the second motor 43 is connected to the second pressure roller 46 by transmission. In this embodiment, when the second motor 43 drives the second synchronous wheel 44 to rotate, since the two ends of the second toothed belt 45 are respectively fixed on the second guide rail 42, the reaction force of the second synchronous wheel 44 drives the second motor 43 and the slide 41 to move, and the slide 41 is rollingly supported on the second guide rail 42 by four second pressure rollers 46. The second toothed belt 45 is pressed into the second guide groove 421 by two second pressure rollers 46 located on the same side of the second guide rail 42, so that the slide 41 can smoothly drive the engraving head 2 to move with high precision, and can ensure the stability of the high-speed operation of the stage, and reduce the noise generated when the stage runs at high speed.

[0049] Please refer to Figure 5 and Figure 6In some embodiments, the second moving module 4 further includes four second roller shafts for rotating and mounting the four second pressure rollers 46 on the slide 41 and two second limiting sleeves 47 sleeved on the second roller shafts, and each second pressure roller 46 is sandwiched between the corresponding two second limiting sleeves 47. The above structural arrangement can prevent the second pressure rollers 46 from tilting and swaying during the rolling process, thereby affecting the stability of the high-speed operation of the slide 41.

[0050] Please refer to Figure 5 and Figure 6 In some embodiments, the second moving module 4 further includes a limiting plate 48 for limiting four second roller shafts, the first end of each second roller shaft is connected to the slide 41, and the second end of each second roller shaft is connected to the limiting plate 48. Through the above-mentioned structural setting, the installation positions of the four second pressure rollers 46 can be limited, and the four second pressure rollers 46 are prevented from tilting and swaying during the force-bearing process, thereby affecting the stability of the high-speed operation of the slide 41.

[0051] Please refer to Figure 5 , Figure 6 and Figure 7 In some embodiments, the electromagnetic actuation mechanism 5 includes a fixed seat 51 fixedly connected to the slide 41 of the second moving module 4, a moving magnet 52 for driving the imprinting head 2 to move along the Z-axis direction, an electromagnet 53 for interacting with the moving magnet 52 to drive the moving magnet 52 to move downward along the Z-axis direction, and an elastic member 54 for driving the moving magnet 52 to move upward and reset along the Z-axis direction. The electromagnet 53 is fixedly arranged on the fixed seat 51, and the moving magnet 52 can be slidably arranged on the fixed seat 51 along the Z-axis direction. When in use, it is only necessary to control the electromagnet 53 to be energized by the controller, and the magnetic field generated by the electromagnet 53 interacts with the moving magnet 52 to drive the moving magnet 52 to move downward along the Z-axis direction, thereby controlling the imprinting head 2 to complete the action of imprinting the braille convex dots on the paper through the electromagnetic actuation mechanism 5. Then, the electromagnet 53 is controlled to be de-energized by the controller, and the elastic member 54 drives the moving magnet 52 to move upward and reset along the Z-axis direction, thereby controlling the imprinting head 2 to complete the quick retraction action after imprinting through the electromagnetic actuation mechanism 5. By repeating the above process, a uniform and complete dot matrix Braille pattern can be printed on the paper.

[0052] Please refer to Figure 5 and Figure 7In some embodiments, a receiving cavity 511 is provided inside the fixing seat 51, and an electromagnet 53 is provided in the receiving cavity 511. The electromagnet 53 is in a cylindrical structure, and the moving magnet 52 is in a columnar structure extending along the Z-axis direction. The moving magnet 52 is in a columnar structure extending along the Z-axis direction, and the electromagnet 53 is sleeved on the outer side of the moving magnet 52. The fixing seat 51 is provided with a first limiting hole and a second limiting hole communicating with the receiving cavity 511. The first limiting hole and the second limiting hole are arranged correspondingly up and down along the Z-axis direction, and the moving magnet 52 can be slidably inserted into the first limiting hole and the second limiting hole. In this embodiment, the moving magnet 52 is limited in its up and down sliding direction by the first limiting hole and the second limiting hole, so that the moving magnet 52 can accurately and stably drive the imprinting head 2 to move back and forth along the Z-axis direction.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Braille graphic engraving machine, characterized in that: include: An engraving table for carrying paper on which Braille graphics can be engraved; An engraving head is used for engraving the braille convex dots constituting the braille pattern on the paper; A moving mechanism, used for driving the imprinting head to move two-dimensionally on a two-dimensional plane parallel to the paper, the moving mechanism comprising a first moving module for driving the imprinting head to move along the Y-axis direction and a second moving module for driving the imprinting head to move along the X-axis direction; as well as An electromagnetic actuation mechanism connected to the imprinting head, the electromagnetic actuation mechanism is used to drive the imprinting head to move along the Z-axis direction, so as to realize the action of imprinting the braille convex dots by the imprinting head and retracting the imprinting head after imprinting is completed; Among them, the first movable module includes two roller guide rail mechanisms arranged in pairs, and the roller guide rail mechanisms include a roller bracket, a first guide rail, a first motor, a first synchronous wheel, a first toothed belt and four first pressure rollers. The first guide rail is arranged on the imprinting table, and two first pressure rollers are respectively arranged on the upper and lower sides of the first guide rail. The rolling surface of each first pressure roller is in rolling contact with the first guide groove on the corresponding side surface of the first guide rail. The first motor is arranged on the roller bracket, the first synchronous wheel is connected to the output shaft of the first motor, and the tooth portion of the first toothed belt is meshed with the tooth portion on the first synchronous wheel, so that when the first motor drives the first synchronous wheel to rotate, the roller bracket can move along the Y-axis direction; the second movable module is respectively connected to the roller brackets of the two roller guide rail mechanisms, and the electromagnetic actuating mechanism is connected to the second movable module.

2. The Braille graphic engraving machine according to claim 1, characterized in that: The first toothed belt is a linear synchronous belt, and both ends of the first toothed belt are respectively fixed on the first guide rail. The first synchronous wheel is arranged between the two first pressure rollers located on the same side of the first guide rail. The two first pressure rollers located on the same side of the first guide rail press the first toothed belt into the first guide groove so that the first motor is connected to the first pressure roller by transmission.

3. The Braille graphic engraving machine according to claim 1, characterized in that: The roller guide mechanism also includes four first pressure roller shafts installed on the roller bracket for rotating the four first pressure rollers respectively, a first limiting sleeve sleeved on each of the first pressure roller shafts, and a locking sleeve sleeved on the first pressure roller shaft, and each of the first pressure rollers is clamped between the corresponding first limiting sleeve and the corresponding locking sleeve.

4. The Braille graphic engraving machine according to claim 1, characterized in that: The roller guide mechanism also includes a motor cover, which is arranged on the roller bracket, and the first motor is located in the motor cover.

5. The Braille graphic engraving machine according to claim 1, characterized in that: The first guide groove is a trapezoidal groove or a V-shaped groove in cross section, and a trapezoidal protrusion or a V-shaped protrusion matching the first guide groove is provided on the roller surface of the first pressure roller, and the trapezoidal protrusion or the V-shaped protrusion is in rolling contact with the trapezoidal groove or the V-shaped groove.

6. The Braille graphic engraving machine according to claim 1, characterized in that: The second movable module includes a slide, a second guide rail, a second motor, a second synchronous wheel, a second toothed belt and four second pressure rollers. Two second pressure rollers are respectively provided on both sides of the second guide rail. The rolling surface of each second pressure roller is in rolling contact with the second guide groove on the corresponding side of the second guide rail. The second motor is arranged on the slide. The second synchronous wheel is connected to the output shaft of the second motor. The teeth of the second toothed belt are meshed with the teeth on the second synchronous wheel so that the slide can move along the X-axis direction when the second motor drives the second synchronous wheel to rotate. The two ends of the second guide rail are respectively connected to the two roller brackets, and the electromagnetic actuating mechanism is connected to the slide.

7. The Braille graphic engraving machine according to claim 6, characterized in that: The second toothed belt is a linear synchronous belt, and both ends of the second toothed belt are respectively fixed on the second guide rails. The second synchronous wheel is arranged between the two second pressure rollers located on the same side of the second guide rail. The two second pressure rollers located on the same side of the second guide rail press the second toothed belt into the second guide groove so that the second motor is connected to the second pressure roller by transmission.

8. The Braille graphic engraving machine according to claim 6, characterized in that: The second movable module also includes four second roller shafts respectively mounted on the slide for rotating the four second pressure rollers and two second limiting sleeves sleeved on each of the second roller shafts, and each of the second pressure rollers is clamped between the corresponding two second limiting sleeves.

9. The Braille graphic engraving machine according to claim 8, characterized in that: The second moving module also includes a limiting plate for limiting the four second roller shafts, the first end of each second roller shaft is connected to the slide table, and the second end of each second roller shaft is connected to the limiting plate.

10. The Braille graphic engraving machine according to any one of claims 1 to 9, characterized in that: The electromagnetic actuation mechanism includes a fixed seat fixedly connected to the slide table of the second movable module, a moving magnet for driving the engraving head to move along the Z-axis direction, an electromagnet for interacting with the moving magnet to drive the moving magnet to move along the Z-axis direction and downward, and an elastic member for driving the moving magnet to move upward and reset along the Z-axis direction. The electromagnet is fixedly arranged on the fixed seat, and the moving magnet can be slidably arranged on the fixed seat along the Z-axis direction.

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