Modularized base frame for thermal printer

Abstract

The utility model discloses a modularized base frame for a thermal printer, which comprises a printer frame, a machine cover positioned at the rear part of the top of the printer frame, a fixing mechanism positioned above the front wall of the machine cover and a heat dissipation mechanism positioned behind the fixing mechanism, the heat dissipation mechanism comprises a heat dissipation air bellow, and the heat dissipation air bellow is connected behind the fixing mechanism. A grid plate is fixedly connected to the front portion of the heat dissipation air box, fixing insertion rods are fixedly connected to the left side and the right side of the heat dissipation air box, fixing bottom columns are slidably connected to the outer portions of the two fixing insertion rods, and a heat conduction plate is jointly and fixedly connected to the rear portions of the two fixing bottom columns. According to the heat dissipation mechanism, the driving motor is used for controlling the heat dissipation fan blades on the two sides to rotate synchronously, the heat conduction silica gel pad is used for guiding heat generated by the printing module into the heat dissipation fins, the heat absorbed by the heat dissipation fins is blown away, and the problem that the heat dissipation efficiency is low is solved.

Description

Technical Field

[0001] This utility model belongs to the field of thermal printer technology, specifically a modular base frame for thermal printers. Background Technology

[0002] A thermal printer is a device that prints on thermal paper. It works by installing a semiconductor heating element on the print head. When the print head heats up and comes into contact with the thermal paper, it can print the desired pattern. Its principle is similar to that of a thermal fax machine. The image is generated by heating, which causes a chemical reaction in the film. This chemical reaction in thermal printers takes place at a certain temperature, and high temperature will accelerate this chemical reaction.

[0003] In the prior art, Chinese utility model patent with publication number CN209224730U discloses a thermal printer base frame structure. This application improves the strength of the buckle by embedding a reinforcing piece into the internal slit of the buckle and integrating it with the buckle. This effectively eliminates the phenomenon of buckle breakage after repeated flipping of the cover, thus increasing service life. At the same time, the structure is simple and easy to manufacture. However, the following problems still exist:

[0004] The printer frame described above improves the strength of the latches and eliminates the phenomenon of latches breaking after the cover is flipped multiple times. However, it is prone to overheating and degrades print quality when the printer is printing continuously. In addition, traditional printers have high maintenance costs, and the entire print head or paper feeding mechanism needs to be replaced if it is damaged.

[0005] Therefore, a modular base frame for thermal printers is proposed to address the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies and solve the problems of needing to replace the entire printer frame when the printhead or paper feeding mechanism is damaged, as well as the low heat dissipation efficiency, a modular frame for thermal printers is proposed.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A modular base frame for a thermal printer includes a printer frame, a cover located at the top rear of the printer frame, a fixing mechanism located above the front wall of the cover, and a heat dissipation mechanism located behind the fixing mechanism. The heat dissipation mechanism includes a heat dissipation box connected to the rear of the fixing mechanism. A grid plate is fixedly connected to the front of the heat dissipation box. Fixing rods are fixedly connected to both sides of the heat dissipation box. Fixing base posts are slidably connected to the outside of the two fixing rods. A heat-conducting plate is fixedly connected to the rear of the two fixing base posts. A plurality of heat dissipation fins are fixedly connected to the rear wall of the heat-conducting plate, and a thermally conductive silicone pad is adhered to the front wall of the heat-conducting plate.

[0011] Preferably, the fixing rod is fixedly connected to the fixing base column by fixing bolts, a filter screen is fixedly connected to the rear arm of the heat dissipation box, and a drive motor is fixedly connected to the rear of the filter screen.

[0012] Preferably, the output end of the drive motor is fixedly connected to a first sprocket, the outside of the first sprocket is meshed with a transmission chain, the right side of the inside of the transmission chain is meshed with a second sprocket, the first sprocket is chain-driven with the second sprocket through the transmission chain, the front of the first sprocket and the second sprocket are fixedly connected to the cooling fan blades through a shaft, and the front wall of the cooling box is provided with a plurality of air outlets.

[0013] Preferably, the printer frame includes two sliders, which are slidably connected to the two sides of the top of the printer frame. The top of each slider is movably connected to a movable arm, and the bottom of each movable arm is movably connected to a support arm. The bottom of each support arm is movably connected to the printer frame.

[0014] Preferably, guide pins are fixedly connected to the opposite sides of the two sliders, the printer frame is movably connected to the cover, and the tops of the two movable arms are movably connected to the cover.

[0015] Preferably, the fixing mechanism includes a fixing base, which is fixedly connected to the front wall of the cover. The fixing base has a printing module inside, and the printing module has fixing slots on both the left and right sides.

[0016] Preferably, threaded rods are threadedly connected to both the left and right sides of the fixed base, and a fixing block adapted to the fixing groove is fixedly connected to the side of the two threaded rods facing each other, and a rotating handle is fixedly connected to the side of the two threaded rods facing away from each other.

[0017] Preferably, the printer frame has an installation mechanism connected to its inner bottom. The installation mechanism includes an installation base and a paper feeding module. The installation base is fixedly connected to the inner bottom of the printer frame. Guide grooves are provided on both sides of the installation base. A magnet A is fixedly connected to the rear of the installation base. A magnet B is fixedly connected to the rear of the paper feeding module. Guide sliders that are compatible with the guide grooves are fixedly connected to both the left and right sides of the paper feeding module.

[0018] Preferably, the printer frame is provided with locking mechanisms on both sides of the top, each locking mechanism including a locking base, the locking base being fixedly connected to the top of the printer frame, and the locking base having limit grooves on both sides of the top of the locking base.

[0019] Preferably, a support slide rod is fixedly connected inside the locking base. Support springs are sleeved on both sides of the outer wall of the support slide rod. Movable sleeves are connected to the opposite sides of the two support springs. The movable sleeves are elastically connected to the locking base through the support springs. Limit blocks are fixedly connected to the opposite sides of the two movable sleeves. A set of locking blocks is connected to both the left and right sides of the front wall of the cover. Each set of locking blocks has two blocks. Locking grooves are opened on the opposite sides of the two locking blocks.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model provides a modular base frame for thermal printers, which has the following advantages:

[0022] 1. This utility model uses a heat dissipation mechanism to control the synchronous rotation of the heat dissipation fan blades on both sides by a drive motor, and uses thermally conductive silicone pads to conduct the heat generated by the printing module to the heat dissipation fins, thereby dissipating the heat absorbed by the heat dissipation fins and solving the problem of low heat dissipation efficiency.

[0023] 2. This utility model uses a fixing mechanism to control the fixing blocks on both sides to be inserted into the fixing slot, thereby realizing the installation and fixing of the printing module. Through the installation mechanism, the paper feeding module is fixed by using magnet A and magnet B to attract and fix it, thus solving the problem of needing to replace the whole thing when the print head or paper feeding mechanism is damaged.

[0024] 3. This utility model uses a locking mechanism and a support spring to control the insertion of the limiting block into the locking groove, thereby realizing the installation and fixing of the printer frame and the cover, and solving the problem of fixing the printer frame and the cover. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the fixing mechanism of this utility model;

[0028] Figure 3 This is a three-dimensional structural diagram of the heat dissipation mechanism of this utility model;

[0029] Figure 4 This is a three-dimensional structural diagram of the internal structure of the heat dissipation box of this utility model;

[0030] Figure 5 This is a three-dimensional structural diagram of the installation mechanism of this utility model;

[0031] Figure 6 This is a three-dimensional structural diagram of the locking mechanism of this utility model.

[0032] In the picture:

[0033] 1. Printer frame; 101. Slider; 102. Movable arm; 103. Support arm; 104. Guide pin;

[0034] 2. Engine cover;

[0035] 3. Fixing mechanism; 301. Fixing base; 302. Printing module; 303. Fixing groove; 304. Threaded rod; 305. Fixing block; 306. Rotating handle;

[0036] 4. Heat dissipation mechanism; 401. Heat dissipation box; 402. Grille plate; 403. Fixing rod; 404. Heat-conducting plate; 405. Heat dissipation fins; 406. Fixing base column; 407. Fixing bolt; 408. Thermal conductive silicone pad; 409. Filter screen; 4010. Drive motor; 4011. First sprocket; 4012. Transmission chain; 4013. Second sprocket; 4014. Heat dissipation fan blades; 4015. Air outlet;

[0037] 5. Mounting mechanism; 501. Mounting base; 502. Guide slide; 503. Magnet A; 504. Magnet B; 505. Paper feeding module; 506. Guide slider;

[0038] 6. Engaging mechanism; 601. Engaging base; 602. Limiting groove; 603. Supporting slide bar; 604. Supporting spring; 605. Movable sleeve column; 606. Limiting block; 607. Engaging block; 608. Engaging groove. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0040] Specific implementation examples are given below.

[0041] Please see Figures 1-6 This utility model provides a modular base frame for a thermal printer, including a printer frame 1, a cover 2 located at the top rear of the printer frame 1, a fixing mechanism 3 located above the front wall of the cover 2, and a heat dissipation mechanism 4 located behind the fixing mechanism 3. An installation mechanism 5 is connected to the inner bottom of the printer frame 1, and a locking mechanism 6 is provided on both sides of the top of the printer frame 1.

[0042] like Figures 1-4 As shown, the heat dissipation mechanism 4 includes a heat dissipation box 401, which is connected to the rear of the fixing mechanism 3. A grid plate 402 is fixedly connected to the front of the heat dissipation box 401. Fixing rods 403 are fixedly connected to both the left and right sides of the heat dissipation box 401. Fixing base posts 406 are slidably connected to the outside of the two fixing rods 403. A heat-conducting plate 404 is fixedly connected to the rear of the two fixing base posts 406. Several heat dissipation fins 405 are fixedly connected to the rear wall of the heat-conducting plate 404. A thermally conductive silicone pad 408 is adhered to the front wall of the heat-conducting plate 404. The fixing rods 403 are fixedly connected to the fixing base posts 406 by fixing bolts 407. A filter screen 409 is fixedly connected to the rear arm of the air box 401. A drive motor 4010 is fixedly connected to the rear of the filter screen 409. A first sprocket 4011 is fixedly connected to the output end of the drive motor 4010. A transmission chain 4012 is meshed with the outside of the first sprocket 4011. A second sprocket 4013 is meshed with the right side inside the transmission chain 4012. The first sprocket 4011 is chain-driven with the second sprocket 4013 through the transmission chain 4012. The front of the first sprocket 4011 and the second sprocket 4013 is fixedly connected to the cooling fan blades 4014 through a shaft. Several air outlets 4015 are opened on the front wall of the cooling air box 401.

[0043] The above solution involves inserting the fixing rod 403 into the fixing base post 406 during use and fixing it with the fixing bolt 407. The heat generated by the printing module 302 is transferred to the heat dissipation fins 405 through the heat-conducting silicone pad 408 and the heat-conducting plate 404. The drive motor 4010 starts and drives the first sprocket 4011 to rotate. Since the first sprocket 4011 is chain-driven with the second sprocket 4013 through the transmission chain 4012, the friction force pushes the transmission chain 4012 to drive the second sprocket 4013 to rotate synchronously, so that the cooling fan blades 4014 on both sides rotate together, thereby dissipating the heat absorbed on the heat dissipation fins 405.

[0044] like Figure 1 and Figure 6 As shown, the printer frame 1 includes two sliders 101, which are slidably connected to both sides of the top of the printer frame 1. Each slider 101 has a movable arm 102 movably connected to its top, and each movable arm 102 has a support arm 103 movably connected to its bottom. The bottoms of both support arms 103 are movably connected to the printer frame 1. Guide pins 104 are fixedly connected to the opposite sides of each slider 101. The printer frame 1 is movably connected to the cover 2, and the tops of the two movable arms 102 are movably connected to the cover 2. Each locking mechanism 6 includes a locking base 601, which is fixedly connected to the top of the printer frame 1. Limiting grooves 602 are provided on both sides of the top of the locking base 601. A support slide rod 603 is fixedly connected inside the locking base 601. Supporting springs 604 are sleeved on both sides of the outer wall of the support slide rod 603. Movable sleeves 605 are connected to the opposite sides of the two support springs 604. The movable sleeves 605 are elastically connected to the locking base 601 through the support springs 604. Limiting blocks 606 are fixedly connected to the opposite sides of the two movable sleeves 605. A set of locking blocks 607 is connected to both the left and right sides of the front wall of the cover 2. There are two locking blocks 607 in each set. A locking groove 608 is provided on the opposite side of the two locking blocks 607.

[0045] The above method involves pushing the cover 2 upwards to rotate it. The movable arm 102, under the action of the guide pin 104, drives the slider 101 to slide backwards. A triangular support is formed between the support arm 103 and the movable arm 102. The cover 2 is then closed, and the locking block 607 is inserted into the limiting groove 602, compressing the support springs 604 on both sides. Since the movable sleeve 605 is elastically connected to the locking base 601 through the support springs 604, the elastic force of the support springs 604 pushes the movable sleeves 605 on both sides to move towards each other along the support slide rod 603. When the limiting block 606 aligns with the locking groove 608, the limiting block 606 is inserted into the locking groove 608 to fix the locking block 607.

[0046] like Figure 1 and Figure 2 As shown, the fixing mechanism 3 includes a fixing base 301, which is fixedly connected to the front wall of the cover 2. A printing module 302 is provided inside the fixing base 301. Fixing slots 303 are provided on both the left and right sides of the printing module 302. Threaded rods 304 are threadedly connected to both the left and right sides of the fixing base 301. Fixing blocks 305 that are adapted to the fixing slots 303 are fixedly connected to the side of the two threaded rods 304 facing each other. Rotary handles 306 are fixedly connected to the side of the two threaded rods 304 facing away from each other.

[0047] The above method involves inserting the printing module 302 into the fixed base 301, rotating the handle 306, and using the threaded rod 304 to push the fixing blocks 305 on both sides to move towards each other, thereby inserting the fixing blocks 305 into the fixing slots 303 and installing and fixing the printing module 302.

[0048] like Figure 1 and Figure 5 As shown, the mounting mechanism 5 includes a mounting base 501 and a paper feeding module 505. The mounting base 501 is fixedly connected to the bottom of the printer frame 1. Guide grooves 502 are provided on both sides of the mounting base 501. A magnet A503 is fixedly connected to the rear of the mounting base 501. A magnet B504 is fixedly connected to the rear of the paper feeding module 505. Guide sliders 506 that are compatible with the guide grooves 502 are fixedly connected to both the left and right sides of the paper feeding module 505.

[0049] The above method involves inserting the paper feeding module 505 into the mounting base 501 via the guide slider 506 along the guide groove 502, and then using magnets A503 and B504 to attract and fix it, thereby completing the installation and fixation of the paper feeding module 505.

[0050] In actual use, firstly, the locking mechanism 6 uses the elastic force of the support spring 604 to push the limiting block 606 into the locking groove 608, thereby completing the installation and fixing of the printer frame 1 and the cover 2.

[0051] Secondly, through the fixing mechanism 3, the rotating handle 306, under the action of the threaded rod 304, pushes the fixing blocks 305 on both sides into the fixing groove 303 to complete the installation and fixing of the printing module 302. Through the installation mechanism 5, the magnetic sheet A503 and magnetic sheet B504 are used to attract and fix the paper feeding module 505, thereby completing the installation and fixing of the paper feeding module 505.

[0052] Finally, through the heat dissipation mechanism 4, the heat dissipation fan blades 4014 on both sides are controlled to rotate synchronously by the drive motor 4010, and the heat generated by the printing module 302 is introduced to the heat dissipation fins 405 through the heat conduction plate 404 by the thermal conductive silicone pad 408, thereby dissipating the heat absorbed on the heat dissipation fins 405.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A modular base frame for a thermal printer, comprising a printer frame (1), a cover (2) located at the top rear of the printer frame (1), a fixing mechanism (3) located above the front wall of the cover (2), and a heat dissipation mechanism (4) located behind the fixing mechanism (3), characterized in that, The heat dissipation mechanism (4) includes a heat dissipation box (401), which is connected to the rear of the fixing mechanism (3). A grid plate (402) is fixedly connected to the front of the heat dissipation box (401). Fixed rods (403) are fixedly connected to both the left and right sides of the heat dissipation box (401). Fixed base columns (406) are slidably connected to the outside of the two fixed rods (403). A heat-conducting plate (404) is fixedly connected to the rear of the two fixed base columns (406). A number of heat dissipation fins (405) are fixedly connected to the rear wall of the heat-conducting plate (404). A thermally conductive silicone pad (408) is adhered to the front wall of the heat-conducting plate (404).

2. The modular base frame for a thermal printer according to claim 1, characterized in that: The fixed insertion rod (403) is fixedly connected to the fixed base column (406) by the fixed bolt (407), and the rear arm of the heat dissipation box (401) is fixedly connected to the filter screen (409), and the rear of the filter screen (409) is fixedly connected to the drive motor (4010).

3. A modular base frame for a thermal printer according to claim 2, characterized in that: The output end of the drive motor (4010) is fixedly connected to a first sprocket (4011). The first sprocket (4011) is externally connected to a transmission chain (4012). The right side of the transmission chain (4012) is internally connected to a second sprocket (4013). The first sprocket (4011) is chain-driven with the second sprocket (4013) through the transmission chain (4012). The front of the first sprocket (4011) and the second sprocket (4013) is fixedly connected to the cooling fan blades (4014) through a shaft. The front wall of the cooling box (401) is provided with several air outlets (4015).

4. A modular base frame for a thermal printer according to claim 1, characterized in that: The printer frame (1) includes two sliders (101), which are slidably connected to the two sides of the top of the printer frame (1). The top of each slider (101) is movably connected to a movable arm (102), and the bottom of each movable arm (102) is movably connected to a support arm (103). The bottom of each support arm (103) is movably connected to the printer frame (1).

5. A modular base frame for a thermal printer according to claim 4, characterized in that: Guide pins (104) are fixedly connected to the opposite sides of the two sliders (101), the printer frame (1) is movably connected to the cover (2), and the tops of the two movable arms (102) are movably connected to the cover (2).

6. A modular base frame for a thermal printer according to claim 1, characterized in that: The fixing mechanism (3) includes a fixing base (301), which is fixedly connected to the front wall of the cover (2). The fixing base (301) is provided with a printing module (302) inside, and fixing slots (303) are provided on both the left and right sides of the printing module (302).

7. A modular base frame for a thermal printer according to claim 6, characterized in that: The fixed base (301) has threaded rods (304) threadedly connected to both the left and right sides. The two threaded rods (304) are fixedly connected to a fixing block (305) that matches the fixing groove (303) on the opposite side. The two threaded rods (304) are fixedly connected to a rotating handle (306) on the opposite side.

8. A modular base frame for a thermal printer according to claim 1, characterized in that: The printer frame (1) has an installation mechanism (5) connected to its inner bottom. The installation mechanism (5) includes an installation base (501) and a paper feeding module (505). The installation base (501) is fixedly connected to the inner bottom of the printer frame (1). Guide grooves (502) are provided on both sides of the installation base (501). A magnet A (503) is fixedly connected to the rear of the installation base (501). A magnet B (504) is fixedly connected to the rear of the paper feeding module (505). Guide sliders (506) that are compatible with the guide grooves (502) are fixedly connected to both the left and right sides of the paper feeding module (505).

9. A modular base frame for a thermal printer according to claim 1, characterized in that: The printer frame (1) has locking mechanisms (6) on both sides of its top. Each locking mechanism (6) includes a locking base (601), which is fixedly connected to the top of the printer frame (1). Limiting grooves (602) are provided on both sides of the top of the locking base (601).

10. A modular base frame for a thermal printer according to claim 9, characterized in that: The locking base (601) is internally fixedly connected to a support slide rod (603). Support springs (604) are sleeved on both sides of the outer wall of the support slide rod (603). Movable sleeves (605) are connected to the opposite sides of the two support springs (604). The movable sleeves (605) are elastically connected to the locking base (601) through the support springs (604). Limiting blocks (606) are fixedly connected to the opposite sides of the two movable sleeves (605). A set of locking blocks (607) is connected to both the left and right sides of the front wall of the cover (2). Each set of locking blocks (607) has two blocks. Locking grooves (608) are opened on the opposite sides of the two locking blocks (607).

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