A device for increasing thermal printing speed by preheating thermal paper

Abstract

The invention belongs to the technical field of thermal paper printers, and in particular relates to a device for improving thermal printing speed by preheating thermal paper, comprising a thermal printer body, and also comprising: a paper feeding rubber roller and a thermal heating head, wherein the paper feeding rubber roller and the thermal heating head are arranged on the thermal printer body; a box body, wherein the box body is fixedly connected to the thermal printer body, a placement groove is arranged on the inner wall of the box body, a preheating rubber roller is fixedly connected to the box body, and two symmetrically arranged first sliding grooves are arranged on the inner wall of the box body, two first sliding blocks are respectively slidably connected in the two first sliding grooves, and a pressure roller is rotatably connected between the two first sliding blocks; the invention solves the problem that when the thermal printer further improves the printing speed on the existing basis, it is necessary to realize printing by increasing the power of the heating element of the thermal sheet or by extending the heating time, but the former will cause printing defects such as printing smear due to poor heat dissipation, and the latter will slow down the printing speed.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal paper printers, and in particular relates to a device for increasing thermal printing speed by preheating thermal paper. Background Art

[0002] Thermal paper printer, also known as thermal printer, is an efficient and convenient printing device. It uses thermal printing technology to work. It is a device that uses thermal technology to print. Its working principle is to heat the paper with thermochromic coating (ie thermal paper) through a heating element, so that the coating undergoes a chemical reaction in the heated area, thereby showing an image or text.

[0003] The working principle of a thermal printer is relatively simple. A coating is applied to the thermal paper that changes color when exposed to heat, similar to photosensitive film. When the heating element of the thermal printer (usually installed on the print head) receives the print signal, it will quickly heat up and contact the thermal paper, causing the coating on the thermal paper to react chemically and show color, thus forming the desired image or text.

[0004] Existing thermal printers generate instantaneous high temperature (the developing temperature of thermal paper is about 100°C) by energizing a row of individually controllable heating semiconductors on the print head, which causes thermal paper to undergo thermochemical changes to develop and solidify the image. Heating takes time, and when the paper is heated from room temperature to the developing temperature of the heating head, the technology has reached its limit. If the printing speed is to be increased on the existing basis, the following two aspects need to be considered:

[0005] 1. Increase the power of the thermal film's heating element (but poor heat dissipation will cause printing problems such as smearing);

[0006] 2. Printing is achieved by prolonging the heating time (this method will slow down the printing speed and is not advisable). In view of this, we propose a device for increasing the thermal printing speed by preheating the thermal paper. Summary of the invention

[0007] The object of the present invention is to provide a device for increasing the thermal printing speed by preheating thermal paper, so as to solve the problems raised in the above background technology.

[0008] In view of this, the present invention provides a device for increasing the thermal printing speed by preheating thermal paper, comprising a thermal printer body, and further comprising:

[0009] A paper feeding rubber roller and a thermal heating head, wherein the paper feeding rubber roller and the thermal heating head are arranged on the thermal printer body;

[0010] A box body, the box body is fixedly connected to the thermal printer body, a placement groove is provided on the inner wall of the box body, a preheating rubber roller is fixedly connected to the box body, two symmetrically arranged first sliding grooves are provided on the inner wall of the box body, two first sliding grooves are respectively slidably connected to two first sliders, and a pressure roller is rotatably connected between the two first sliders;

[0011] Two second slide grooves, the two second slide grooves are respectively opened on the inner walls of the two first slide grooves, two second sliders are respectively slidably connected in the two second slide grooves, and the two second sliders are respectively fixed to the two first sliders;

[0012] A lifting assembly, which is located in the box body and is used to drive the two second slide blocks to move up and down;

[0013] A fixing rod, wherein the fixing rod is fixedly connected to the box body, and two fourth slide grooves communicating with the inner cavity of the box body are provided in the fixing rod, and a plurality of fourth sliders are respectively slidably connected in the two fourth slide grooves, and a pressure rod is arranged below the fixing rod, and two second fixing blocks are fixedly connected to the top surface of the pressure rod, and a plurality of transmission rods are respectively rotatably connected between the two second fixing blocks and the plurality of fourth sliders;

[0014] A driving assembly, the driving assembly is located in the fixing rod and is used to drive the plurality of fourth sliding blocks to move;

[0015] Two limit grooves, the two limit grooves are opened in the pressure rod and are connected to the inner cavity of the box body, two limit blocks are slidably connected in the two limit grooves, and one end of the two limit blocks passes through the inner walls of the two limit grooves and extends to the outside, the other ends of the two limit blocks are fixedly connected to two buffer springs, and one end of the two buffer springs is fixed to the inner walls of the two limit grooves, and one end of the two limit blocks is fixedly connected to a pressure plate.

[0016] Based on the above structure, by setting the placement slot, it is ensured that the user can put the thermal paper into the placement slot, and by setting the preheating rubber roller, when the thermal paper passes through the preheating rubber roller, the thermal paper can be preheated by the heating function of the preheating rubber roller, and the thermal paper is preheated from room temperature to 50-60℃, ensuring that the existing print head development time is greatly shortened (the thermal paper has been preheated to 30-40℃ higher than room temperature) without changing the thermal print head, and ensuring that the original printing effect remains unchanged, the printing power can also be appropriately reduced to reduce undesirable phenomena such as printing smear, and the first slide slot, The first slider and the pressure roller ensure that the two first sliders can respectively drive the pressure rollers to move up and down along the two first slides. The second slide and the second slider are set to ensure that the second slider can slide in the second slide. The lifting component is set to ensure that the user can drive the two second sliders to move up and down through the lifting component, so that the two second sliders respectively drive the two first sliders to move up and down, so that the two first sliders drive the pressure roller to move downward. When the pressure roller moves to a suitable position, the pressure roller will press the thermal paper down onto the preheating rubber roller to prevent the thermal paper from tilting and unable to contact the preheating rubber roller. The fourth slide and the fourth slider are set to ensure that the two fourth sliders can slide in the fourth slide. The driving component is set to ensure that the user can drive multiple fourth sliders to move through the driving component, so that the corresponding two fourth sliders are close to or away from each other. The pressure rod, the pressure plate, the second fixed block and the transmission rod are set to ensure that when multiple fourth sliders move, the multiple fourth sliders will respectively drive the two second fixed blocks to move downward through multiple transmission rods, so that the two second fixed blocks drive the pressure rod to move downward, and the pressure rod drives the pressure plate to move downward. When the pressure plate moves downward, When it is in the appropriate position, the thermal paper passing through the pressure plate and the bottom of the inner wall of the box body will not be wrinkled, so as to prevent the thermal paper from being wrinkled and affecting the preheating effect of the preheating rubber roller. The limit grooves, limit blocks and pressure plates are set to ensure that the two limit blocks can drive the pressure plate to move up and down along the two limit grooves respectively. The buffer springs are set to ensure that when the pressure plate moves downward excessively, the pressure plate will compress the two buffer springs respectively through the two limit blocks to prevent the pressure plate from causing damage to the thermal paper. At the same time, the two limit blocks will be respectively affected by the rebound force of the two buffer springs, driving the pressure plate and the thermal paper to stick together.

[0017] In the above technical solution, further, the lifting assembly includes:

[0018] Two one-way threaded rods, the two one-way threaded rods are respectively rotatably connected to the inner walls of the two second sliding grooves, and are respectively threadedly connected to the two second sliding blocks;

[0019] A third slide groove, wherein the third slide groove is provided in one of the one-way threaded rods and is in communication with the outside, a third slider is slidably connected in the third slide groove, and a return spring fixed to the inner wall of the third slide groove is fixedly connected to the bottom surface of the third slider;

[0020] A jack, the jack being provided at the top end of the one-way threaded rod, wherein a first fixing block fixed to the third sliding block is arranged in the jack;

[0021] Two gear grooves, the two gear grooves are arranged in the box body and are respectively connected with the two second slide grooves, a first bevel gear is rotatably connected in the gear groove, and one end of the first bevel gear extends into the second slide groove and is fixed to the bottom end of the one-way threaded rod, and one side of the two first bevel gears is respectively meshed with two second bevel gears;

[0022] A first through slot is provided in the box body and communicated with the two gear slots. A first connecting rod is rotatably connected in the first through slot, and two ends of the first connecting rod extend into the two gear slots respectively and are fixed to the two second bevel gears respectively.

[0023] In this technical solution, it is ensured that the thermal paper can always be in contact with the preheating rubber roller.

[0024] In the above technical solution, further, the first fixing block is plug-fitted with the socket.

[0025] In this technical solution, it is ensured that the first fixing block can be inserted into the insertion hole.

[0026] In the above technical solution, further, one end of the first bevel gear is rotatably connected to the second sliding groove.

[0027] In this technical solution, it is ensured that one end of the first bevel gear can rotate normally in the second sliding groove.

[0028] In the above technical solution, further, both ends of the first connecting rod are rotatably connected to the two gear grooves respectively.

[0029] In this technical solution, it is ensured that both ends of the first connecting rod can rotate normally in the two gear grooves respectively.

[0030] In the above technical solution, further, the driving component includes:

[0031] Two bidirectional threaded rods, the two bidirectional threaded rods are respectively rotatably connected to the inner walls of the two fourth sliding grooves, and are respectively threadedly connected to the corresponding two fourth sliding blocks;

[0032] A second through slot, wherein the second through slot is provided in the fixed rod and communicates with the two fourth sliding slots, a second connecting rod is rotatably connected in the second through slot, and two ends of the second connecting rod extend into the two fourth sliding slots respectively and are fixed to one end of the two bidirectional threaded rods respectively;

[0033] a first rotating groove, the first rotating groove being disposed on an inner wall of the second through groove, a worm gear being rotatably connected to the first rotating groove and being fixed to the second connecting rod;

[0034] The second rotating groove is arranged on the inner wall of the first rotating groove and is connected to the outside. A worm meshing with the worm wheel is rotatably connected in the second rotating groove, and one end of the worm extends to the outside.

[0035] In this technical solution, it is ensured that when the thermal paper passes between the pressing plate and the bottom surface of the inner wall of the box body, the thermal paper can be straightened to prevent wrinkles.

[0036] In the above technical solution, further, the two sections of threads on the bidirectional threaded rod have opposite rotation directions.

[0037] In this technical solution, it is ensured that when the bidirectional threaded rod rotates, the corresponding two fourth sliding blocks will be moved closer to or farther away from each other due to the action of the threads of the bidirectional threaded rod.

[0038] In the above technical solution, further, both ends of the second connecting rod are rotatably connected to two fourth sliding grooves respectively.

[0039] In this technical solution, it is ensured that both ends of the second connecting rod can rotate normally in the two fourth sliding grooves respectively.

[0040] In the above technical solution, further, one end of the worm is fixedly connected to an anti-sliding block.

[0041] In this technical solution, it is ensured that the user can drive the worm to rotate through the anti-sliding block at one end of the worm.

[0042] The beneficial effects of the present invention are:

[0043] 1. The device for increasing the thermal printing speed by preheating thermal paper ensures that the user can put the thermal paper into the placement slot through the provided placement slot, and through the provided preheating rubber roller, when the thermal paper passes through the preheating rubber roller, the thermal paper can be preheated by the heating function of the preheating rubber roller, and the thermal paper is preheated from room temperature to 50-60°C, ensuring that the development time of the existing print head is greatly shortened (the thermal paper has been preheated to 30-40°C higher than the room temperature) without changing the thermal print head, and ensuring that the original printing effect remains unchanged, the printing power can be appropriately reduced to reduce undesirable phenomena such as printing smear, and the first slide slot, the first slider and the pressure roller are provided to ensure that the two first sliders can respectively drive the pressure roller to move up and down along the two first slide slots, and through The second slide groove and the second slider are set to ensure that the second slider can slide in the second slide groove, and the lifting component is set to ensure that the user can drive the two second sliders to move up and down through the lifting component, so that the two second sliders respectively drive the two first sliders to move up and down, and the two first sliders drive the pressure roller to move downward. When the pressure roller moves to a suitable position, the pressure roller will press the thermal paper down onto the preheating rubber roller to prevent the thermal paper from tilting and unable to contact the preheating rubber roller. This solves the problem that when the thermal printer increases the printing speed on the existing basis, it is necessary to increase the power of the heating element of the thermal sheet or to increase the heating time to achieve printing, but the former will cause printing defects such as printing smear due to poor heat dissipation, and the latter will slow down the printing speed.

[0044] 2. The device for increasing the thermal printing speed by preheating thermal paper ensures that the two fourth slide blocks can slide in the fourth slide block by setting the fourth slide block and the fourth slider, and ensures that the user can drive multiple fourth slide blocks to move by the driving block, so that the corresponding two fourth slide blocks are close to or away from each other, and ensures that when the multiple fourth slide blocks move, the multiple fourth slide blocks will respectively drive the two second fixed blocks to move downward through the multiple transmission rods by setting the pressure rod, the pressure plate, the second fixed block and the transmission rod, so that the two second fixed blocks drive the pressure rod to move downward, and the pressure rod drives the pressure plate to move downward. When the pressure plate moves downward to a suitable position, the thermal paper passing through the pressure plate and the bottom surface of the inner wall of the box body will not be wrinkled, so as to prevent the thermal paper from being wrinkled and affecting the preheating effect of the preheating rubber roller.

[0045] 3. The device for increasing the thermal printing speed by preheating the thermal paper ensures that the two limit blocks can respectively drive the pressure plate to move up and down along the two limit slots through the set limit slots, limit blocks and pressure plate, and ensures that when the pressure plate moves excessively downward, the pressure plate will respectively compress the two buffer springs through the two limit blocks to prevent the pressure plate from causing damage to the thermal paper. At the same time, the two limit blocks will respectively be affected by the rebound force of the two buffer springs to drive the pressure plate to stick to the thermal paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0047] Figure 2 It is one of the internal structure schematic diagrams of the box body of the present invention;

[0048] Figure 3 This is the second schematic diagram of the internal structure of the box body of the present invention;

[0049] Figure 4 It is a schematic diagram of the internal structure of one of the one-way threaded rods of the present invention;

[0050] Figure 5 is a schematic cross-sectional structural diagram of a fixing rod of the present invention;

[0051] Figure 6 It is one of the schematic diagrams of the internal structure of the fixing rod of the present invention;

[0052] Figure 7 This is the second schematic diagram of the internal structure of the fixing rod of the present invention.

[0053] The symbols in the figure are:

[0054] 1. Thermal printer body; 101. Paper feed roller; 102. Thermal heating head; 2. Box body; 3. Placement slot; 4. Preheating roller; 5. First slide slot; 6. First slider; 7. Pressing roller; 8. Second slide slot; 9. Second slider; 10. Fixed rod; 11. Pressing rod; 12. Limiting slot; 13. Limiting block; 14. Buffer spring; 15. Pressing plate; 16. One-way threaded rod; 17. Third slide slot; 18. Third slider; 19. Return spring; 20, jack; 21, first fixed block; 22, gear groove; 23, first bevel gear; 24, second bevel gear; 25, first through groove; 26, first connecting rod; 27, fourth slide groove; 28, fourth slide block; 29, second fixed block; 30, transmission rod; 31, two-way threaded rod; 32, second through groove; 33, second connecting rod; 34, first rotating groove; 35, worm wheel; 36, second rotating groove; 37, worm. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0056] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0058] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0059] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples. Embodiment 1:

[0060] See also Figure 1 - Figure 7 As shown, this embodiment provides a device for increasing the thermal printing speed by preheating thermal paper, including a thermal printer body 1, and also including:

[0061] The paper feeding rubber roller 101 and the thermal heating head 102 are arranged on the thermal printer body 1;

[0062] A box body 2 is fixedly connected to the thermal printer body 1, a placement groove 3 is provided on the inner wall of the box body 2, a preheating rubber roller 4 is fixedly connected to the box body 2, two symmetrically arranged first slide grooves 5 are provided on the inner wall of the box body 2, two first slide blocks 6 are slidably connected to the two first slide grooves 5, and a pressure roller 7 is rotatably connected between the two first slide blocks 6;

[0063] Two second slide grooves 8, the two second slide grooves 8 are respectively opened on the inner walls of the two first slide grooves 5, two second sliders 9 are respectively slidably connected in the two second slide grooves 8, and the two second sliders 9 are respectively fixed to the two first sliders 6;

[0064] A lifting assembly, which is located in the box body 2 and is used to drive the two second slide blocks 9 to move up and down;

[0065] A fixed rod 10, the fixed rod 10 is fixedly connected in the box body 2, two fourth slide grooves 27 connected to the inner cavity of the box body 2 are provided in the fixed rod 10, and a plurality of fourth sliders 28 are slidably connected in the two fourth slide grooves 27, a pressure rod 11 is arranged below the fixed rod 10, and two second fixed blocks 29 are fixedly connected to the top surface of the pressure rod 11, and a plurality of transmission rods 30 are rotatably connected between the two second fixed blocks 29 and the plurality of fourth sliders 28;

[0066] A driving assembly, which is located in the fixing rod 10 and is used to drive the plurality of fourth sliding blocks 28 to move;

[0067] Two limit grooves 12 are provided in the pressure rod 11 and are connected to the inner cavity of the box body 2. Two limit blocks 13 are slidably connected in the two limit grooves 12, and one end of the two limit blocks 13 passes through the inner walls of the two limit grooves 12 and extends to the outside. The other ends of the two limit blocks 13 are fixedly connected to two buffer springs 14, and one end of the two buffer springs 14 is fixed to the inner walls of the two limit grooves 12, and one end of the two limit blocks 13 is fixedly connected to a pressure plate 15. Embodiment 2:

[0068] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features. The lifting component includes:

[0069] Two one-way threaded rods 16, the two one-way threaded rods 16 are respectively rotatably connected to the inner walls of the two second slide grooves 8, and are respectively threadedly connected to the two second sliders 9;

[0070] A third slide groove 17, which is provided in one of the one-way threaded rods 16 and communicates with the outside, a third slider 18 is slidably connected in the third slide groove 17, and a return spring 19 fixed to the inner wall of the third slide groove 17 is fixedly connected to the bottom surface of the third slider 18;

[0071] The plug hole 20 is provided at the top of the one-way threaded rod 16, and a first fixing block 21 fixed to the third sliding block 18 is provided in the plug hole 20;

[0072] Two gear grooves 22 are provided in the box body 2 and are respectively connected with the two second slide grooves 8. A first bevel gear 23 is rotatably connected in the gear groove 22, and one end of the first bevel gear 23 extends into the second slide groove 8 and is fixed to the bottom end of the one-way threaded rod 16. One side of the two first bevel gears 23 is respectively meshed with two second bevel gears 24;

[0073] The first through slot 25 is provided in the box body 2 and communicates with the two gear slots 22 . A first connecting rod 26 is rotatably connected in the first through slot 25 , and both ends of the first connecting rod 26 extend into the two gear slots 22 and are fixed to the two second bevel gears 24 .

[0074] The user rotates the first fixing block 21 by hand, so that the first fixing block 21 drives the one-way threaded rod 16 to rotate in one of the second sliding grooves 8 through the third sliding block 18. When one of the one-way threaded rods 16 rotates, one of the one-way threaded rods 16 drives one of the first bevel gears 23 to rotate in the gear groove 22, so that one of the first bevel gears 23 drives the first connecting rod 26 to rotate in the first through groove 25 through the second bevel gear 24, and the first connecting rod 26 drives another second bevel gear 24 to rotate in another gear groove 22, so that another second bevel gear 24 drives another first bevel gear 23 in another The gear groove 22 rotates, and when the two first bevel gears 23 rotate, the two first bevel gears 23 will respectively drive the two one-way threaded rods 16 to rotate, so that the two second sliders 9 are respectively affected by the threads of the two one-way threaded rods 16, and move downward along the two second slide grooves 8, so that the two second sliders 9 respectively drive the two first sliders 6 to move downward along the two first slide grooves 5, and when the two first sliders 6 move downward, the two first sliders 6 will drive the pressure roller 7 to move downward. When the pressure roller 7 moves to a suitable position, the pressure roller 7 will press the thermal paper against the preheating rubber roller 4 to ensure that the thermal paper can always be in contact with the preheating rubber roller 4. Embodiment 3:

[0075] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features: the first fixing block 21 is plugged into the socket 20.

[0076] Here, it is ensured that the first fixing block 21 can be inserted into the insertion hole 20 . Embodiment 4:

[0077] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features: one end of the first bevel gear 23 is rotatably connected to the second slide groove 8.

[0078] Here, it is ensured that one end of the first bevel gear 23 can rotate normally in the second sliding groove 8 . Embodiment 5:

[0079] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features: both ends of the first connecting rod 26 are rotatably connected to the two gear grooves 22 respectively.

[0080] Here, it is ensured that both ends of the first connecting rod 26 can rotate normally in the two gear grooves 22 respectively. Embodiment 6:

[0081] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features. The driving component includes:

[0082] Two bidirectional threaded rods 31, the two bidirectional threaded rods 31 are respectively rotatably connected to the inner walls of the two fourth sliding grooves 27, and are respectively threadedly connected to the corresponding two fourth sliding blocks 28;

[0083] A second through slot 32 is provided in the fixing rod 10 and communicates with the two fourth slide slots 27. A second connecting rod 33 is rotatably connected in the second through slot 32, and both ends of the second connecting rod 33 extend into the two fourth slide slots 27 and are fixed to one end of the two bidirectional threaded rods 31 respectively;

[0084] A first rotating groove 34, which is formed on the inner wall of the second through groove 32, and a worm gear 35 fixed to the second connecting rod 33 is rotatably connected in the first rotating groove 34;

[0085] The second rotating groove 36 is provided on the inner wall of the first rotating groove 34 and communicated with the outside. A worm 37 meshing with the worm wheel 35 is rotatably connected in the second rotating groove 36 , and one end of the worm 37 extends to the outside.

[0086] Among them, the user rotates the worm screw 37 by hand, so that the worm screw 37 drives the worm wheel 35 to rotate in the second through groove 32, so that the worm wheel 35 drives the second connecting rod 33 to rotate in the second through groove 32. When the second connecting rod 33 rotates, the second connecting rod 33 will respectively drive the two bidirectional threaded rods 31 to rotate in the two fourth sliding grooves 27. When the bidirectional threaded rod 31 rotates, the corresponding two fourth sliding blocks 28 will be affected by the threads of the bidirectional threaded rod 31 and approach each other along the corresponding fourth sliding grooves 27. When multiple fourth sliding blocks 28 move, multiple fourth sliding blocks 28 will respectively drive the two second fixed blocks 29 to move downward through multiple transmission rods 30, so that the two second fixed blocks 29 drive the pressure rod 11 to move downward, so that the pressure rod 11 drives the pressure plate 15 to move downward, so that the pressure plate 15 presses the thermal paper on the bottom surface of the inner wall of the box body 2, ensuring that when the thermal paper passes between the pressure plate 15 and the bottom surface of the inner wall of the box body 2, the thermal paper can be straightened to prevent wrinkles. Embodiment 7:

[0087] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features: the two sections of threads on the bidirectional threaded rod 31 have opposite rotation directions.

[0088] It is ensured that when the bidirectional threaded rod 31 rotates, the corresponding two fourth sliding blocks 28 are moved closer to or farther away from each other by the action of the threads of the bidirectional threaded rod 31 . Embodiment 8:

[0089] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features: both ends of the second connecting rod 33 are rotatably connected to the two fourth sliding grooves 27 respectively.

[0090] Here, it is ensured that both ends of the second connecting rod 33 can rotate normally in the two fourth sliding grooves 27 respectively. Embodiment 9:

[0091] This embodiment provides a device for increasing the thermal printing speed by preheating thermal paper. In addition to the technical solutions of the above embodiments, it also has the following technical features: one end of the worm 37 is fixedly connected to an anti-sliding block.

[0092] Here, it is ensured that the user can drive the worm 37 to rotate through the anti-sliding block at one end of the worm 37 .

[0093] When in use, the user manually places the thermal paper into the placement slot 3, passes one side of the thermal paper from under the pressure plate 15, and passes between the preheating rubber roller 4 and the pressure roller 7, and then places it on the paper feeding rubber roller 101. Then the user manually rotates the first fixing block 21, allowing the first fixing block 21 to drive the one-way threaded rod 16 to rotate in one of the second slide grooves 8 through the third slider 18. When one of the one-way threaded rods 16 rotates, one of the one-way threaded rods 16 will drive one of the first bevel gears 23 to rotate in the gear groove 22, so that one of the first bevel gears 23 drives the first connecting rod 26 to rotate in the first through groove 25 through the second bevel gear 24, and the first connecting rod 26 drives the other second bevel gear 24 to rotate in the other gear groove 22. The two first bevel gears 23 are moved so that the other second bevel gear 24 drives the other first bevel gear 23 to rotate in the other gear groove 22. When the two first bevel gears 23 rotate, the two first bevel gears 23 will respectively drive the two one-way threaded rods 16 to rotate, so that the two second sliders 9 are respectively affected by the threads of the two one-way threaded rods 16 and move downward along the two second slide grooves 8 respectively, so that the two second sliders 9 respectively drive the two first sliders 6 to move downward along the two first slide grooves 5. When the two first sliders 6 move downward, the two first sliders 6 will drive the pressure roller 7 to move downward. When the pressure roller 7 moves to a suitable position, the pressure roller 7 will press the thermal paper against the preheating rubber roller 4 to ensure that the thermal paper can always be in contact with the preheating rubber roller 4. Then the user turns the worm 37 by hand. The worm 37 drives the worm wheel 35 to rotate in the second through groove 32, so that the worm wheel 35 drives the second connecting rod 33 to rotate in the second through groove 32. When the second connecting rod 33 rotates, the second connecting rod 33 will respectively drive the two bidirectional threaded rods 31 to rotate in the two fourth sliding grooves 27. When the bidirectional threaded rod 31 rotates, the corresponding two fourth sliding blocks 28 will be affected by the threads of the bidirectional threaded rod 31 and approach each other along the corresponding fourth sliding grooves 27. When the multiple fourth sliding blocks 28 move, the multiple fourth sliding blocks 28 will respectively drive the two second fixed blocks 29 to move downward through the multiple transmission rods 30, so that the two second fixed blocks 29 drive the pressure rod 11 to move downward, so that the pressure rod 11 drives the pressure plate 15 to move downward, and the pressure plate 15 presses the thermal paper inside the box body 2 On the bottom surface of the wall, it is ensured that when the thermal paper passes between the pressure plate 15 and the bottom surface of the inner wall of the box body 2, the thermal paper can be straightened to prevent wrinkles. Among them, when the pressure plate 15 moves excessively during the downward movement, the pressure plate 15 will drive the two limit blocks 13 to move upward along the two limit grooves 12 respectively, and let the two limit blocks 13 compress the two buffer springs 14 respectively to ensure that when the pressure plate 15 moves excessively downward, it will not cause damage to the thermal paper. Then the user closes the cover on the thermal printer body 1. When the cover on the thermal printer body 1 is closed, the thermal heating head 102 will be attached to the thermal paper. At the same time, the cover on the thermal printer body 1 will squeeze the first fixing block 21, allowing the first fixing block 21 to enter the socket 20 from the outside.The first fixed block 21 compresses the reset spring 19 through the third slider 18, and then the user starts the preheating rubber roller 4 to preheat the thermal paper. At the same time, the user starts the thermal printer body 1, and the paper feeding rubber roller 101 on the thermal printer body 1 rotates, driving the thermal paper to move to the outside, and the thermal heating head 102 performs thermal printing on the thermal paper, ensuring that the overall device can increase the printing speed by 20%-30% on the basis of the existing technology, and ensure that the overall device can reduce the printing smear and improve the printing quality on the basis of the existing technology.

[0094] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A device for increasing the speed of thermal printing by preheating thermal paper, comprising a thermal printer body (1), characterized in that: Also includes: A paper feeding rubber roller (101) and a thermal heating head (102), wherein the paper feeding rubber roller (101) and the thermal heating head (102) are arranged on a thermal printer body (1); A box body (2), the box body (2) is fixedly connected to the thermal printer body (1), a placement groove (3) is provided on the inner wall of the box body (2), a preheating rubber roller (4) is fixedly connected to the box body (2), two symmetrically arranged first sliding grooves (5) are provided on the inner wall of the box body (2), two first sliding blocks (6) are slidably connected to the two first sliding grooves (5), and a pressure roller (7) is rotatably connected between the two first sliding blocks (6); Two second slide grooves (8), the two second slide grooves (8) are respectively opened on the inner walls of the two first slide grooves (5), two second sliders (9) are respectively slidably connected in the two second slide grooves (8), and the two second sliders (9) are respectively fixed to the two first sliders (6); A lifting assembly, the lifting assembly being located in the box body (2) and being used to drive the two second slide blocks (9) to move up and down; A fixed rod (10), the fixed rod (10) being fixedly connected in the box body (2), the fixed rod (10) being provided with two fourth slide grooves (27) in communication with the inner cavity of the box body (2), a plurality of fourth sliders (28) being slidably connected in the two fourth slide grooves (27), a pressure rod (11) being arranged below the fixed rod (10), a top surface of the pressure rod (11) being fixedly connected with two second fixed blocks (29), a plurality of transmission rods (30) being rotatably connected between the two second fixed blocks (29) and the plurality of fourth sliders (28); a driving assembly, the driving assembly being located in the fixing rod (10) and being used for driving the plurality of fourth sliding blocks (28) to move; Two limit grooves (12), the two limit grooves (12) are arranged in the pressure rod (11) and are connected to the inner cavity of the box body (2), two limit blocks (13) are slidably connected in the two limit grooves (12), and one end of the two limit blocks (13) passes through the inner wall of the two limit grooves (12) and extends to the outside, the other end of the two limit blocks (13) is fixedly connected to two buffer springs (14), and one end of the two buffer springs (14) is fixedly connected to the inner wall of the two limit grooves (12), and one end of the two limit blocks (13) is fixedly connected to a pressure plate (15).

2. The device for increasing thermal printing speed by preheating thermal paper according to claim 1, characterized in that: The lifting assembly comprises: Two one-way threaded rods (16), the two one-way threaded rods (16) are respectively rotatably connected to the inner walls of the two second sliding grooves (8), and are respectively threadedly connected to the two second sliding blocks (9); a third slide groove (17), the third slide groove (17) being arranged in one of the one-way threaded rods (16) and being in communication with the outside, a third slider (18) being slidably connected in the third slide groove (17), a bottom surface of the third slider (18) being fixedly connected to a return spring (19) fixed to an inner wall of the third slide groove (17); A plug hole (20), the plug hole (20) being formed at the top end of the one-way threaded rod (16), and a first fixing block (21) fixed to the third sliding block (18) being arranged in the plug hole (20); Two gear grooves (22), the two gear grooves (22) are provided in the box body (2) and are respectively connected to the two second slide grooves (8), a first bevel gear (23) is rotatably connected in the gear groove (22), one end of the first bevel gear (23) extends into the second slide groove (8) and is fixed to the bottom end of the one-way threaded rod (16), and one side of the two first bevel gears (23) is respectively meshed with two second bevel gears (24); A first through slot (25), the first through slot (25) being formed in the box body (2) and communicating with the two gear slots (22), a first connecting rod (26) being rotatably connected in the first through slot (25), and two ends of the first connecting rod (26) respectively extending into the two gear slots (22) and respectively fixed to the two second bevel gears (24).

3. The device for increasing thermal printing speed by preheating thermal paper according to claim 2, characterized in that: The first fixing block (21) is plug-fitted into the insertion hole (20).

4. The device for increasing thermal printing speed by preheating thermal paper according to claim 2, characterized in that: One end of the first bevel gear (23) is rotatably connected to the second sliding groove (8).

5. The device for increasing thermal printing speed by preheating thermal paper according to claim 2, characterized in that: Both ends of the first connecting rod (26) are rotatably connected to the two gear grooves (22) respectively.

6. The device for increasing thermal printing speed by preheating thermal paper according to claim 1, characterized in that: The drive assembly comprises: Two bidirectional threaded rods (31), the two bidirectional threaded rods (31) are respectively rotatably connected to the inner walls of the two fourth sliding grooves (27), and are respectively threadedly connected to the corresponding two fourth sliding blocks (28); a second through slot (32), the second through slot (32) being formed in the fixing rod (10) and being connected to the two fourth sliding slots (27); a second connecting rod (33) being rotatably connected in the second through slot (32), and two ends of the second connecting rod (33) respectively extending into the two fourth sliding slots (27) and respectively being fixed to one end of the two bidirectional threaded rods (31); a first rotating groove (34), the first rotating groove (34) being formed on the inner wall of the second through groove (32), a worm gear (35) fixed to the second connecting rod (33) being rotatably connected in the first rotating groove (34); A second rotating groove (36), the second rotating groove (36) is formed on the inner wall of the first rotating groove (34) and is connected to the outside, a worm (37) meshing with the worm wheel (35) is rotatably connected in the second rotating groove (36), and one end of the worm (37) extends to the outside.

7. The device for increasing thermal printing speed by preheating thermal paper according to claim 6, characterized in that: The two sections of threads on the bidirectional threaded rod (31) have opposite rotation directions.

8. The device for increasing thermal printing speed by preheating thermal paper according to claim 6, characterized in that: Both ends of the second connecting rod (33) are rotatably connected to two fourth sliding grooves (27) respectively.

9. The device for increasing thermal printing speed by preheating thermal paper according to claim 6, characterized in that: One end of the worm (37) is fixedly connected to an anti-sliding block.

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