Upper shell mold of desktop thermal printer

Abstract

The invention relates to a desktop thermal printer upper shell mold, which comprises a mold base, a mold core, a mold core, a mold core, a mold core, a mold core, a mold core, a mold core and a mold core, and is characterized in that the mold base is provided with a sprue gate; the forming system is arranged in the containing cavity, a forming cavity is formed in the forming system, and a flow guide pipe is connected between the forming cavity and the sprue gate; the input end of the cooling system penetrates into one side wall of the mold base, and the output end of the cooling system penetrates out of the other opposite side wall of the mold base; wherein the side wall of the mold base is connected with a mold temperature controller, and the mold temperature controller is communicated with the sprue gate. According to the upper shell mold of the desktop thermal printer, the formed upper shell is uniformly cooled through the cooling system, demolding can be rapidly conducted after the paper bin is cooled and hardened, and the forming machining efficiency of the upper shell is improved; in addition, the temperature of the molten plastic entering the forming cavity is controlled through the mold temperature controller, so that the surface of the formed upper shell is heated more uniformly, and the forming quality of the upper shell is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of thermal printing, and in particular to an upper shell mold for a desktop thermal printer. Background Art

[0002] With the continuous development of my country's economy, the demand for thermal printers has increased rapidly. They are widely used in transportation, retail, catering, manufacturing, clothing, medical finance, power and telecommunications, and many other industries. The market size continues to grow rapidly. In particular, the vigorous development of e-commerce and the rapid rise of express logistics in my country in recent years have also driven the prosperity of the thermal printer industry. A thermal printer refers to a printer that directly heats thermal paper through a thermal print head to change color and form an image. It has the advantages of fast printing speed, low noise, clear printing, easy use, and strong compatibility.

[0003] Desktop thermal printers are a type of thermal printer. The market for desktop thermal printers is much larger than that for color inkjet printers, large-format UV printers, and even digital color printers. Most of the market demand is based on automatic identification functions to track the manufacturing and transportation processes. A small part of the market is based on high-end color label printing, which can be seen on wine bottles, cans, and other packaging. At present, the upper shell of desktop thermal printers is mostly processed by molds. The upper shell mold has the following defects during use: the upper shell is often too hot after molding, which makes it difficult to demold, and it needs to wait for it to cool naturally, thereby reducing the molding efficiency of the upper shell of the desktop thermal printer. Summary of the invention

[0004] In view of the problems in the prior art, the present application proposes a desktop thermal printer upper shell mold, which solves the problem of low processing efficiency of the existing desktop thermal printer upper shell mold.

[0005] In order to achieve the above technical objectives, the technical solution of this application is as follows:

[0006] Design a desktop thermal printer upper shell mold, including:

[0007] A mold base, wherein a pouring port is provided on the upper surface of the mold base, and a receiving cavity is provided inside the mold base;

[0008] A molding system, wherein the molding system is arranged in the accommodating cavity, a molding cavity is arranged in the molding system, and a guide pipe is connected between the molding cavity and the pouring port;

[0009] A cooling system, wherein an input end of the cooling system penetrates through one side wall of the mold base, and an output end of the cooling system penetrates through another opposite side wall of the mold base;

[0010] Wherein, a mold temperature controller is connected to the side wall of the mold base, and the mold temperature controller is connected to the pouring port;

[0011] The molding system comprises a front mold and a rear mold, the front mold and the rear mold are detachably connected, a lateral core extraction mechanism is connected to the outer wall of the front mold, the molding cavity is arranged between the front mold and the rear mold, and the molding cavity is adapted to the outer contour of the upper shell of the desktop thermal printer;

[0012] The mold base includes a supporting member, an upper mold base, a lower mold base and a base connected in sequence, the pouring port is arranged in the middle of the supporting member, and the accommodating cavity is arranged in the upper mold base and the lower mold base; the cooling system includes a first water circuit, the first water circuit includes a first U-shaped tube, a second U-shaped tube and a third U-shaped tube, the first U-shaped tube is embedded in the front mold, the input end of the second U-shaped tube passes through the side wall of the upper mold base, the output end of the second U-shaped tube is connected to the input end of the first U-shaped tube, the output end of the first U-shaped tube is connected to the input end of the third U-shaped tube, and the output end of the third U-shaped tube passes through the other opposite side wall of the upper mold base.

[0013] Optionally, the first water channel also includes a first L-shaped tube, a second L-shaped tube and a first straight tube, the first straight tube is embedded in the front mold, the input end of the first L-shaped tube passes through the side wall of the upper mold base, the output end of the first L-shaped tube is connected to the input end of the first straight tube, the output end of the first straight tube is connected to the input end of the second L-shaped tube, and the output end of the second L-shaped tube passes through the other opposite side wall of the upper mold base.

[0014] Optionally, the first L-shaped tube, the second L-shaped tube and the first straight tube are each provided in multiple groups, and the input end of the second U-shaped tube, the output end of the third U-shaped tube, the input end of the first L-shaped tube and the output end of the second L-shaped tube are all connected with pipe joints.

[0015] Optionally, the first water channel also includes an H-shaped tube, a third L-shaped tube and a fourth L-shaped tube, the H-shaped tube is embedded in the front mold, the input end of the third L-shaped tube passes through the side wall of the upper mold base, the output end of the third L-shaped tube is connected to the input end of the H-shaped tube, the output end of the H-shaped tube is connected to the input end of the fourth L-shaped tube, and the output end of the fourth L-shaped tube passes through the other opposite side wall of the upper mold base.

[0016] Optionally, the cooling system also includes a second water circuit, the second water circuit includes a fourth U-shaped tube, a fifth L-shaped tube and a sixth L-shaped tube, the fourth U-shaped tube is arranged around the outside of the rear mold, the input end of the fifth L-shaped tube passes through the side wall of the lower mold base, the output end of the fifth L-shaped tube is connected to the input end of the fourth U-shaped tube, the output end of the fourth U-shaped tube is connected to the input end of the sixth L-shaped tube, and the output end of the sixth L-shaped tube passes through the other opposite side wall of the lower mold base.

[0017] Optionally, the second water channel also includes a seventh L-shaped tube, a second straight tube and a first vertical tube, the input end of the second straight tube passes through the side wall of the lower mold base, the output end of the second straight tube is connected to the side wall of the first vertical tube, one end of the first vertical tube extends into the rear mold, the other end of the first vertical tube is connected to the input end of the seventh L-shaped tube, and the output end of the seventh L-shaped tube passes through the same side wall of the lower mold base.

[0018] Optionally, the second water channel also includes an eighth L-shaped tube, a third straight tube and a second vertical tube, the second vertical tube is arranged parallel to the first vertical tube, and the third straight tube is arranged perpendicular to the second straight tube; the input end of the third straight tube passes through the side wall of the lower mold base, and the output end of the third straight tube is connected to the side wall of the second vertical tube, one end of the second vertical tube extends into the rear mold, and the other end of the second vertical tube is connected to the input end of the eighth L-shaped tube, and the output end of the eighth L-shaped tube passes through the same side wall of the lower mold base.

[0019] Optionally, a lock is connected between the upper die base and the lower die base.

[0020] Optionally, support rods are provided in the four corners of the upper die base and the lower die base.

[0021] Optionally, a first spring is provided between the bearing member and the upper die seat, and a second spring is provided between the lower die seat and the base.

[0022] The embodiment of the present application provides a desktop thermal printer upper shell mold. This mold uses a cooling system to evenly cool the upper shell after molding. After the upper shell is cooled and hardened, it can be quickly demolded through a lateral core-pulling mechanism, thereby improving the molding efficiency of the upper shell. In addition, the temperature of the molten plastic entering the molding cavity is controlled by a mold temperature controller, so that the surface of the molded upper shell is heated more evenly, ensuring the molding quality of the upper shell; the lateral core-pulling mechanism can assist in demolding the upper shell, further improving the molding efficiency of the upper shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a structural schematic diagram of a desktop thermal printer upper shell mold described in an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the installation of a guide tube in an upper shell mold of a desktop thermal printer according to an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of the installation of a first water channel and a front mold in an upper shell mold of a desktop thermal printer described in an embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the installation of a first water channel and a lateral core extraction mechanism in an upper shell mold of a desktop thermal printer described in an embodiment of the present application;

[0028] Figure 5 Schematic diagram of the installation of the first water channel in the upper shell mold of a desktop thermal printer described in an embodiment of the present application Figure 1 ;

[0029] Figure 6 Schematic diagram of the installation of the first water channel in the upper shell mold of a desktop thermal printer described in an embodiment of the present application Figure 2 ;

[0030] Figure 7 This is a schematic diagram of the installation of a second water channel, a rear mold and a lower mold base in an upper shell mold of a desktop thermal printer described in an embodiment of the present application;

[0031] Figure 8 This is a schematic diagram of the installation of a second water channel and a lower mold base in an upper shell mold of a desktop thermal printer described in an embodiment of the present application;

[0032] Fig. 9 Schematic diagram of the installation of the second water channel in the upper shell mold of a desktop thermal printer described in an embodiment of the present application Figure 1 ;

[0033] Fig.10 Schematic diagram of the installation of the second water channel in the upper shell mold of a desktop thermal printer described in an embodiment of the present application Figure 2 ;

[0034] In the figure: 1. mold base; 11. bearing member; 111. pouring gate; 112. guide tube; 113. support rod; 12. upper mold base; 13. lower mold base; 14. base; 15. accommodating cavity; 16. mold temperature controller; 17. lock; 18. first spring; 19. second spring; 2. molding system; 21. front mold; 211. lateral core extraction mechanism; 22. rear mold; 23. molding cavity; 3. cooling system; 31. first water channel; 311. first U-shaped tube; 312. second U-shaped tube; 313. The third U-shaped tube; 314. The first L-shaped tube; 315. The second L-shaped tube; 316. The first straight tube; 317. The H-shaped tube; 318. The third L-shaped tube; 319. The fourth L-shaped tube; 32. The pipe joint; 33. The second waterway; 331. The fourth U-shaped tube; 332. The fifth L-shaped tube; 333. The sixth L-shaped tube; 334. The seventh L-shaped tube; 335. The second straight tube; 336. The first vertical tube; 337. The eighth L-shaped tube; 338. The third straight tube; 339. The second vertical tube. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of 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.

[0036] like Figure 1-10 As shown, in some embodiments, a desktop thermal printer upper shell mold includes a mold base 1, a molding system 2 and a cooling system 3. The mold base 1 includes a carrier 11, an upper mold base 12, a lower mold base 13 and a base 14 connected in sequence, and a receiving cavity 15 is provided in the mold base 1, a part of the receiving cavity 15 is provided in the upper mold base 12, and another part of the receiving cavity 15 is provided in the lower mold base 13; the molding system 2 includes a detachable front mold 21 and a rear mold 22, both of which are provided in the receiving cavity 15, and a molding cavity 23 is provided between the front mold 21 and the rear mold 22; a pouring port 111 is provided in the middle of the carrier 11, and penetrates the carrier 11 and the upper mold base 12 to communicate with the molding cavity 23, and a guide pipe 112 is connected between the molding cavity 23 and the pouring port 111, and the molten plastic can be smoothly fed into the molding cavity 23 through the guide pipe 112.

[0037] During processing, the plastic is heated and melted in the heating barrel, and then, driven by the screw or plunger of the injection machine, the molten plastic enters the molding cavity 23 between the front mold 21 and the rear mold 22 through the injection nozzle, the pouring port 111 and the guide tube 112; the temperature of the molten plastic when entering the molding cavity 23 can be adjusted by the mold temperature controller 16, so that the upper shell in the molding cavity 23 is heated evenly, thereby improving the molding quality of the upper shell. When the molten plastic completely fills the molding cavity 23, coolant is introduced into the input end of the second U-shaped tube 312, and the coolant is transmitted through the first U-shaped tube 311 to absorb the heat of the upper part of the molding cavity 23. The coolant that has absorbed the heat is finally discharged from the output end of the third U-shaped tube 313, thereby accelerating the cooling rate of the upper shell and improving the efficiency of the upper shell molding process.

[0038] like Figure 1-10 As shown, based on the above technical solution, the present application can also be improved as follows.

[0039] In one embodiment, the first water channel 31 also includes a first L-shaped tube 314, a second L-shaped tube 315 and a first straight tube 316. The first straight tube 316 is embedded in the front mold 21. The input end of the first L-shaped tube 314 passes through the side wall of the upper mold base 12. The output end of the first L-shaped tube 314 is connected to the input end of the first straight tube 316. The output end of the first straight tube 316 is connected to the input end of the second L-shaped tube 315. The output end of the second L-shaped tube 315 is from the other opposite side wall of the upper mold base 12.

[0040] In this embodiment, when cooling the upper shell in the molding cavity 23, coolant can also be introduced into the input end of the first L-shaped tube 314. The coolant is transmitted through the first straight tube 316 to further absorb the heat from the upper part of the molding cavity 23. The coolant that has absorbed the heat is finally discharged from the output end of the second L-shaped tube 315, thereby further accelerating the cooling rate of the upper shell.

[0041] In one embodiment, the first L-shaped tube 314, the second L-shaped tube 315 and the first straight tube 316 are each provided with multiple groups, and the input end of the second U-shaped tube 312, the output end of the third U-shaped tube 313, the input end of the first L-shaped tube 314 and the output end of the second L-shaped tube 315 are all connected with a pipe joint 32.

[0042] In this embodiment, the second U-shaped tube 312, the third U-shaped tube 313, the first L-shaped tube 314 and the second L-shaped tube 315 can also be connected to the external coolant delivery system through the pipe joint 32. The pipe joint 32 can be suitable for pipe diameters of different sizes, which not only improves the sealing performance of the coolant delivery system, but also facilitates user use.

[0043] In one embodiment, the first water channel 31 also includes an H-shaped tube 317, a third L-shaped tube 318 and a fourth L-shaped tube 319. The H-shaped tube 317 is embedded in the front mold 21, the input end of the third L-shaped tube 318 passes through the side wall of the upper mold base 12, the output end of the third L-shaped tube 318 is connected to the input end of the H-shaped tube 317, the output end of the H-shaped tube 317 is connected to the input end of the fourth L-shaped tube 319, and the output end of the fourth L-shaped tube 319 passes through the other opposite side wall of the upper mold base 12.

[0044] In this embodiment, coolant can also be introduced into the input end of the third L-shaped tube 318. The coolant is transported through the H-shaped tube 317 to further absorb the heat from the upper part of the molding cavity 23. The coolant that has absorbed the heat is finally discharged from the output end of the fourth L-shaped tube 319, which can further accelerate the cooling rate of the upper shell.

[0045] In one embodiment, the cooling system 3 also includes a second water circuit 33, the second water circuit 33 includes a fourth U-shaped tube 331, a fifth L-shaped tube 332 and a sixth L-shaped tube 333, the fourth U-shaped tube 331 is surrounded and arranged on the outer side of the rear mold 22, the input end of the fifth L-shaped tube 332 passes through the side wall of the lower mold base 13, the output end of the fifth L-shaped tube 332 is connected to the input end of the fourth U-shaped tube 331, the output end of the fourth U-shaped tube 331 is connected to the input end of the sixth L-shaped tube 333, and the output end of the sixth L-shaped tube 333 passes through the other opposite side wall of the lower mold base 13.

[0046] In this embodiment, coolant can also be introduced into the input end of the fifth L-shaped tube 332. The coolant is transported through the fourth U-shaped tube 331 to absorb the heat from the lower part of the molding cavity 23. The coolant that has absorbed the heat is finally discharged from the output end of the sixth L-shaped tube 333, thereby accelerating the cooling rate of the upper shell and improving the molding processing efficiency of the upper shell.

[0047] In one embodiment, the second water channel 33 also includes a seventh L-shaped tube 334, a second straight tube 335 and a first vertical tube 336, the input end of the second straight tube 335 passes through the side wall of the lower mold base 13, the output end of the second straight tube 335 is connected to the side wall of the first vertical tube 336, one end of the first vertical tube 336 extends into the rear mold 22, the other end of the first vertical tube 336 is connected to the input end of the seventh L-shaped tube 334, and the output end of the seventh L-shaped tube 334 passes through the same side wall of the lower mold base 13.

[0048] In this embodiment, coolant can also be introduced into the input end of the second straight tube 335. The coolant is transported through the first vertical tube 336 to further absorb the heat from the lower part of the molding cavity 23. The coolant that has absorbed the heat is finally discharged from the output end of the seventh L-shaped tube 334, which can further accelerate the cooling rate of the upper shell.

[0049] In one embodiment, the second water channel 33 also includes an eighth L-shaped tube 337, a third straight tube 338 and a second vertical tube 339. The second vertical tube 339 is arranged in parallel with the first vertical tube 336, and the third straight tube 338 is arranged vertically with the second straight tube 335. The input end of the third straight tube 338 passes through the side wall of the lower mold base 13, and the output end of the third straight tube 338 is connected to the side wall of the second vertical tube 339. One end of the second vertical tube 339 extends into the rear mold 22, and the other end of the second vertical tube 339 is connected to the input end of the eighth L-shaped tube 337. The output end of the eighth L-shaped tube 337 passes through the same side wall of the lower mold base 13.

[0050] In this embodiment, coolant can also be introduced into the input end of the third straight tube 338. The coolant is transported through the second vertical tube 339 to further absorb the heat from the lower part of the molding cavity 23. The coolant that has absorbed the heat is finally discharged from the output end of the eighth L-shaped tube 337, further accelerating the cooling rate of the upper shell.

[0051] In one embodiment, a lock buckle 17 is connected between the upper die base 12 and the lower die base 13 .

[0052] In this embodiment, the bottom end of the upper mold base 12 and the top end of the lower mold base 13 can be locked by a lock 17 to prevent the upper mold base 12 and the lower mold base 13 from loosening when the upper shell is formed. In addition, two locks 17 can be used, and they are respectively arranged on two opposite side walls of the upper mold base 12 or the lower mold base 13, which can make the connection between the upper mold base 12 and the lower mold base 13 more stable.

[0053] In one embodiment, support rods 113 are provided in the four corners of the upper die seat 12 and the lower die seat 13 ; a first spring 18 is provided between the carrier 11 and the upper die seat 12 , and a second spring 19 is provided between the lower die seat 13 and the base 14 .

[0054] In this embodiment, the support rod 113 can reinforce the structure of the upper die base 12 and the lower die base 13, thereby increasing the service life of the mold. The first spring 18 can reduce the impact between the carrier 11 and the upper die base 12, and the second spring 19 can reduce the impact between the lower die base 13 and the base 14, thereby further improving the durability of the entire mold.

[0055] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0056] In the description of the present application, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0057] In the description of the present application, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated 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. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0058] It should be noted that, in the description of the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment 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 equipment. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements.

[0059] The above is a detailed introduction to the scheme provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A desktop thermal printer upper shell mold, characterized in that: include: A mold base, wherein a pouring port is provided on the upper surface of the mold base, and a receiving cavity is provided inside the mold base; A molding system, wherein the molding system is arranged in the accommodating cavity, a molding cavity is arranged in the molding system, and a guide pipe is connected between the molding cavity and the pouring port; A cooling system, wherein an input end of the cooling system penetrates through one side wall of the mold base, and an output end of the cooling system penetrates through another opposite side wall of the mold base; Wherein, a mold temperature controller is connected to the side wall of the mold base, and the mold temperature controller is connected to the pouring port; The molding system comprises a front mold and a rear mold, the front mold and the rear mold are detachably connected, a lateral core extraction mechanism is connected to the outer wall of the front mold, the molding cavity is arranged between the front mold and the rear mold, and the molding cavity is adapted to the outer contour of the upper shell of the desktop thermal printer; The mold base includes a supporting member, an upper mold base, a lower mold base and a base connected in sequence, the pouring port is arranged in the middle of the supporting member, and the accommodating cavity is arranged in the upper mold base and the lower mold base; the cooling system includes a first water circuit, the first water circuit includes a first U-shaped tube, a second U-shaped tube and a third U-shaped tube, the first U-shaped tube is embedded in the front mold, the input end of the second U-shaped tube passes through the side wall of the upper mold base, the output end of the second U-shaped tube is connected to the input end of the first U-shaped tube, the output end of the first U-shaped tube is connected to the input end of the third U-shaped tube, and the output end of the third U-shaped tube passes through the other opposite side wall of the upper mold base.

2. The desktop thermal printer upper shell mold according to claim 1, characterized in that: The first water channel also includes a first L-shaped tube, a second L-shaped tube and a first straight tube. The first straight tube is embedded in the front mold, the input end of the first L-shaped tube passes through the side wall of the upper mold base, the output end of the first L-shaped tube is connected to the input end of the first straight tube, the output end of the first straight tube is connected to the input end of the second L-shaped tube, and the output end of the second L-shaped tube passes through the other opposite side wall of the upper mold base.

3. The desktop thermal printer upper shell mold according to claim 2, characterized in that: The first L-shaped tube, the second L-shaped tube and the first straight tube are each provided with multiple groups, and the input end of the second U-shaped tube, the output end of the third U-shaped tube, the input end of the first L-shaped tube and the output end of the second L-shaped tube are all connected with pipe joints.

4. The desktop thermal printer upper shell mold according to claim 2, characterized in that: The first water channel also includes an H-shaped tube, a third L-shaped tube and a fourth L-shaped tube. The H-shaped tube is embedded in the front mold, the input end of the third L-shaped tube passes through the side wall of the upper mold base, the output end of the third L-shaped tube is connected to the input end of the H-shaped tube, the output end of the H-shaped tube is connected to the input end of the fourth L-shaped tube, and the output end of the fourth L-shaped tube passes through the other opposite side wall of the upper mold base.

5. The desktop thermal printer upper shell mold according to claim 2, characterized in that: The cooling system also includes a second water circuit, which includes a fourth U-shaped tube, a fifth L-shaped tube and a sixth L-shaped tube, the fourth U-shaped tube is arranged around the outer side of the rear mold, the input end of the fifth L-shaped tube passes through the side wall of the lower mold base, the output end of the fifth L-shaped tube is connected to the input end of the fourth U-shaped tube, the output end of the fourth U-shaped tube is connected to the input end of the sixth L-shaped tube, and the output end of the sixth L-shaped tube passes through the other opposite side wall of the lower mold base.

6. The upper shell mold of a desktop thermal printer according to claim 5, characterized in that: The second water channel also includes a seventh L-shaped tube, a second straight tube and a first vertical tube, the input end of the second straight tube passes through the side wall of the lower mold base, the output end of the second straight tube is connected to the side wall of the first vertical tube, one end of the first vertical tube extends into the rear mold, the other end of the first vertical tube is connected to the input end of the seventh L-shaped tube, and the output end of the seventh L-shaped tube passes through the same side wall of the lower mold base.

7. The upper shell mold of a desktop thermal printer according to claim 6, characterized in that: The second water channel also includes an eighth L-shaped tube, a third straight tube and a second vertical tube. The second vertical tube is arranged in parallel with the first vertical tube, and the third straight tube is arranged perpendicular to the second straight tube. The input end of the third straight tube passes through the side wall of the lower mold base, and the output end of the third straight tube is connected to the side wall of the second vertical tube. One end of the second vertical tube extends into the rear mold, and the other end of the second vertical tube is connected to the input end of the eighth L-shaped tube, and the output end of the eighth L-shaped tube passes through the same side wall of the lower mold base.

8. The upper shell mold of a desktop thermal printer according to claim 2, characterized in that: A lock buckle is connected between the upper die base and the lower die base.

9. The desktop thermal printer upper shell mold according to claim 1, characterized in that: Support rods are provided in the four corners of the upper die base and the lower die base.

10. The desktop thermal printer upper shell mold according to claim 1, characterized in that: A first spring is arranged between the bearing member and the upper die seat, and a second spring is arranged between the lower die seat and the base.

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