A lower shell mold for a desktop thermal printer

Abstract

The present application relates to a lower shell mold for a desktop thermal printer, which includes a support assembly. The support assembly includes a top seat, a mold base, and a bottom base connected in sequence from top to bottom. A pouring port is provided on the upper surface of the top seat, and a receiving cavity is provided in the mold base. A molding system is provided in the receiving cavity. A molding cavity is provided in the molding system, and a channel is provided between the molding cavity and the pouring port. The channel communicates with the top seat and the mold base. A temperature control system has an input end passing through the outer wall at one end of the mold base and an output end passing through the opposite outer wall at the other end of the mold base. In this mold, by providing a receiving cavity in the mold base, the molding system is placed in the receiving cavity, and a coolant is introduced into one end of the mold base through the temperature control system and then discharged from the other end of the mold base. When the coolant flows through the molding system, the coolant can quickly absorb the heat in the molding system, thereby achieving rapid cooling of the lower shell, further promoting the demolding operation of the lower shell, and improving the forming processing efficiency of the lower shell.

Description

Technical Field

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

[0002] With the continuous and sustainable development of China's economy, the demand for desktop thermal printers has increased rapidly, and they are widely used in many industries such as transportation, commercial retail, catering consumption, manufacturing, clothing, medical finance, power and telecommunications. The market scale has continued to grow at a high speed. Especially in recent years, with the booming development of e-commerce in China and the rapid rise of the express logistics industry, it has also driven the prosperity of the desktop thermal printer industry.

[0003] The principle of a desktop thermal printer is as follows: A transparent film is covered on a light-colored material. After the film is heated for a period of time, it turns dark. The image is generated through a chemical reaction in the film by heating. This chemical reaction occurs at a certain temperature; temperature will accelerate this chemical reaction. When the temperature is below 60°C, it takes a very long time, even up to several years, for the film to turn dark; while when the temperature is 200°C, this reaction will be completed within a few microseconds. The desktop thermal printer selectively heats at a determined position on the thermal paper, and thus the corresponding pattern is generated. In a desktop thermal printer, the lower shell is a key component of the printer, which can play a protective role for the entire printer and indirectly affects the service life of the printer.

[0004] A mold is various dies and tools used in industrial production to obtain the required products by methods such as injection molding, blow molding, extrusion, die casting, or forging, smelting, stamping, etc. In short, a mold is a tool used to make formed articles. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the outer shape of the article by changing the physical state of the formed material. However, there are still the following defects in the use of the existing lower shell forming molds for desktop thermal printers on the market: The lower shell is often not easy to demold after forming due to excessive temperature, and it needs to be naturally cooled, thus reducing the forming processing efficiency of the lower shell of the desktop thermal printer. Summary of the Invention

[0005] In view of the problems in the prior art, the present application proposes a lower shell mold for a desktop thermal printer to solve the problem of low forming processing efficiency of the existing lower shell of the desktop thermal printer.

[0006] In order to achieve the above technical objectives, the technical solution of the present application is as follows:

[0007] Design a lower shell mold for a desktop thermal printer, including:

[0008] Support component, the support component includes a top seat, a mold base and a bottom base connected in sequence from top to bottom, a pouring port is provided on the upper surface of the top seat, and a receiving cavity is provided in the mold base;

[0009] Forming system, the forming system is arranged in the receiving cavity, a forming cavity is provided in the forming system, a channel is provided between the forming cavity and the pouring port, and the channel communicates with the top seat and the mold base;

[0010] Temperature control system, the input end of the temperature control system penetrates through the outer wall at one end of the mold base, and the output end of the temperature control system penetrates through the opposite outer wall at the other end of the mold base;

[0011] Among them, the forming system includes a front mold and a rear mold, the front mold is arranged directly above the rear mold, the forming cavity is arranged between the front mold and the rear mold, positioning blocks are connected between the four corners of the front mold and the mold base, and a plurality of air vents are provided on the outer surfaces of the top seat and the bottom base; a thermostat is connected to the side wall of the top seat, and the thermostat communicates with the pouring port.

[0012] Optionally, the temperature control system includes a first water circuit, the first water circuit includes a first L-shaped water pipe, a second L-shaped water pipe and a first straight water pipe arranged in the top seat and all located on the same horizontal plane; the first L-shaped water pipe and the second L-shaped water pipe are symmetrically arranged, the first L-shaped water pipe is arranged at the input end of the temperature control system, the second L-shaped water pipe is arranged at the output end of the temperature control system, and the first straight water pipe is connected between the first L-shaped water pipe and the second L-shaped water pipe; one end of the first L-shaped water pipe and one end of the second L-shaped water pipe penetrate through the side wall at one end of the top seat, and the other end of the first L-shaped water pipe and the other end of the second L-shaped water pipe penetrate through the adjacent side wall at the other end of the top seat.

[0013] Optionally, the mold base includes a upper mold body and a lower mold body connected to each other, the upper mold body is arranged directly above the lower mold body, the temperature control system further includes a second water circuit, the second water circuit includes a third L-shaped water pipe, a fourth L-shaped water pipe and a second straight water pipe arranged in the upper mold body and all located on the same vertical plane; the third L-shaped water pipe is arranged at the input end of the temperature control system, the fourth L-shaped water pipe is arranged at the output end of the temperature control system, one end of the third L-shaped water pipe and one end of the fourth L-shaped water pipe penetrate through the side wall at one end of the upper mold body, and the other end of the third L-shaped water pipe and the other end of the fourth L-shaped water pipe are both connected to the second straight water pipe.

[0014] Optionally, a locking member is connected between the side wall of the upper mold body and the side wall of the lower mold body.

[0015] Optionally, the temperature control system further includes a third water circuit, which includes a fifth L-shaped water pipe, a sixth L-shaped water pipe, and a first U-shaped water pipe provided in the upper mold body. The first U-shaped water pipe is disposed around the outer wall of the front mold. The fifth L-shaped water pipe is provided at the input end of the temperature control system, and the sixth L-shaped water pipe is provided at the output end of the temperature control system. One end of the fifth L-shaped water pipe and one end of the sixth L-shaped water pipe penetrate into the side wall of one end of the upper mold body, and the other end of the fifth L-shaped water pipe and the other end of the sixth L-shaped water pipe are both connected to the first U-shaped water pipe.

[0016] Optionally, the temperature control system further includes a fourth water circuit, which includes a seventh L-shaped water pipe, an eighth L-shaped water pipe, and a second U-shaped water pipe provided in the lower mold body. The second U-shaped water pipe is disposed around the outer wall of the rear mold. The seventh L-shaped water pipe is provided at the input end of the temperature control system, and the eighth L-shaped water pipe is provided at the output end of the temperature control system. One end of the seventh L-shaped water pipe and one end of the eighth L-shaped water pipe penetrate into the side wall of one end of the lower mold body, and the other end of the seventh L-shaped water pipe and the other end of the eighth L-shaped water pipe are both connected to the second U-shaped water pipe.

[0017] Optionally, the temperature control system further includes a fifth water circuit, which includes a third straight water pipe, a first vertical water pipe, a second vertical water pipe, and a third vertical water pipe provided in the lower mold body. One end of the third straight water pipe penetrates into the side wall of one end of the lower mold body, and the other end of the third straight water pipe penetrates out of the opposite side wall of the other end of the lower mold body. The first vertical water pipe, the second vertical water pipe, and the third vertical water pipe are vertically arranged. One end of the first vertical water pipe, the second vertical water pipe, and the third vertical water pipe are all connected to the third straight water pipe, and the other ends of the first vertical water pipe, the second vertical water pipe, and the third vertical water pipe extend into the rear mold.

[0018] Optionally, springs are connected between the four corners of the support assembly and the molding system.

[0019] Optionally, a lifter is connected between the front mold and the rear mold. One end of the lifter is connected to the side walls of the front mold and the rear mold, and the other end of the lifter penetrates out of the outer wall of the mold base.

[0020] Optionally, a cam pin is connected to the lifter.

[0021] A lower shell mold for a desktop thermal printer provided by an embodiment of the present application. In this mold, a receiving cavity is arranged inside a mold base, a molding system is placed in the receiving cavity, and a temperature control system is used to introduce a coolant into one end of the mold base and then discharge it from the other end. When the coolant flows through the molding system inside the receiving cavity, the coolant can quickly absorb the heat in the molding system, thereby realizing the rapid cooling of the lower shell, further promoting the demolding operation of the lower shell, and improving the forming processing efficiency of the lower shell.

[0022] In addition, when injecting molding raw materials into the molding system through a pouring gate, a thermostat can adjust the temperature of the molding raw materials when they enter the molding cavity, enabling the molding raw materials to always remain in a molten state before completely entering the molding cavity, and avoiding uneven heating of the molding raw materials. Positioning blocks are provided at the four corners of the front mold, which can play a role in fixing the front mold, preventing the offset between the front mold and the rear mold and the deformation of the molding cavity, and improving the forming quality of the lower shell. The vent holes on the outer surface of the base accelerate the heat dissipation effect of the molding system, further improving the forming processing efficiency of the lower shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a lower shell mold for a desktop thermal printer according to an embodiment of the present application;

[0025] Figure 2 It is an installation schematic diagram of a mold base in a lower shell mold for a desktop thermal printer according to an embodiment of the present application;

[0026] Figure 3 It is an installation schematic diagram of a first waterway in a lower shell mold for a desktop thermal printer according to an embodiment of the present application;

[0027] Figure 4 It is an installation schematic diagram of a second waterway and a front mold in a lower shell mold for a desktop thermal printer according to an embodiment of the present application;

[0028] Figure 5 It is an installation schematic diagram of a second waterway in a lower shell mold for a desktop thermal printer according to an embodiment of the present application;

[0029] Figure 6 It is an installation schematic diagram of a third waterway in a lower shell mold for a desktop thermal printer according to an embodiment of the present application;

[0030] Figure 7Schematic diagram of the installation of the fourth waterway in the lower shell mold of a desktop thermal printer according to an embodiment of the present application;

[0031] Figure 8 Schematic diagram of the installation of the fifth waterway in the lower shell mold of a desktop thermal printer according to an embodiment of the present application;

[0032] In the figure: 1. Support assembly; 11. Top seat; 111. Pouring port; 112. Accommodation cavity; 12. Mold base; 121. Vent hole; 122. Upper mold body; 123. Lower mold body; 124. Locking piece; 13. Base; 14. Spring; 2. Molding system; 21. Molding cavity; 22. Front mold; 23. Rear mold; 24. Positioning block; 25. Slide; 26. Angle pin; 3. Temperature control system; 31. First waterway; 311. First L-shaped water pipe; 312. Second L-shaped water pipe; 313. First straight water pipe; 32. Second waterway; 321. Third L-shaped water pipe; 322. Fourth L-shaped water pipe; 323. Second straight water pipe; 33. Third waterway; 331. Fifth L-shaped water pipe; 332. Sixth L-shaped water pipe; 333. First U-shaped water pipe; 34. Fourth waterway; 341. Seventh L-shaped water pipe; 342. Eighth L-shaped water pipe; 343. Second U-shaped water pipe; 35. Fifth waterway; 351. Third straight water pipe; 352. First vertical water pipe; 353. Second vertical water pipe; 354. Third vertical water pipe; 4. Thermostat. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art shall fall within the protection scope of the present application.

[0034] As Figure 1-8As shown, in some embodiments, a lower shell mold of a desktop thermal printer includes a support assembly 1, a molding system 2, and a temperature control system 3. The support assembly 1 includes a top seat 11, a mold base 12, and a base 13 connected in sequence from top to bottom. A pouring gate 111 is provided on the upper surface of the top seat 11, and a receiving cavity 112 is provided inside the mold base 12. The molding system 2 is arranged inside the receiving cavity 112. A molding cavity 21 is provided inside the molding system 2, and a channel is provided between the molding cavity 21 and the pouring gate 111. The channel is connected to the top seat 11 and the mold base 12. The input end of the temperature control system 3 penetrates through the outer wall at one end of the mold base 12, and the output end of the temperature control system 3 penetrates through the opposite outer wall at the other end of the mold base 12. The molding system 2 includes a front mold 22 and a rear mold 23. The front mold 22 is arranged directly above the rear mold 23. The molding cavity 21 is provided between the front mold 22 and the rear mold 23. Positioning blocks 24 are connected between the four corners of the front mold 22 and the mold base 12. A number of ventilation holes 121 are provided on the outer surfaces of the top seat 11 and the base 13. A thermostat 4 is connected to the side wall of the top seat 11, and the thermostat 4 is communicated with the pouring gate 111.

[0035] Among them, the temperature control system 3 includes a first water circuit 31. The first water circuit 31 includes a first L-shaped water pipe 311, a second L-shaped water pipe 312, and a first straight water pipe 313 provided inside the top seat 11, and they are all located on the same horizontal plane. The first L-shaped water pipe 311 and the second L-shaped water pipe 312 are symmetrically arranged. The first L-shaped water pipe 311 is arranged at the input end of the temperature control system 3, and the second L-shaped water pipe 312 is arranged at the output end of the temperature control system 3. The first straight water pipe 313 is connected between the first L-shaped water pipe 311 and the second L-shaped water pipe 312. One end of the first L-shaped water pipe 311 and one end of the second L-shaped water pipe 312 penetrate through the side wall at one end of the top seat 11, and the other end of the first L-shaped water pipe 311 and the other end of the second L-shaped water pipe 312 penetrate through the adjacent side wall at the other end of the top seat 11. The mold base 12 includes an upper mold body 122 and a lower mold body 123 connected to each other. The upper mold body 122 is arranged directly above the lower mold body 123. The temperature control system 3 further includes a second water circuit 32. The second water circuit 32 includes a third L-shaped water pipe 321, a fourth L-shaped water pipe 322, and a second straight water pipe 323 provided inside the upper mold body 122, and they are all located on the same vertical plane. The third L-shaped water pipe 321 is arranged at the input end of the temperature control system 3, and the fourth L-shaped water pipe 322 is arranged at the output end of the temperature control system 3. One end of the third L-shaped water pipe 321 and one end of the fourth L-shaped water pipe 322 penetrate through the side wall at one end of the upper mold body 122, and the other end of the third L-shaped water pipe 321 and the other end of the fourth L-shaped water pipe 322 are both connected to the second straight water pipe 323.

[0036] In this embodiment, the top seat 11, the mold base 12, and the base 13 in the support assembly 1 are all load-bearing structures and are arranged on the outermost side of the mold, which can play a role in bearing and protecting. During processing, the plastic is first heated and melted in the heating barrel at the bottom of the injection machine, and then under the push of the screw or plunger of the injection machine, it enters the molding cavity 21 in the molding system 2 through the pouring port 111 of the injection machine nozzle. After the plastic cools and hardens into a shape, demolding can obtain the lower shell product.

[0037] During the plastic cooling process, coolant is introduced into one end of the mold base 12 by using the first waterway 31 and the second waterway 32. Through the transportation of the first L-shaped water pipe 311, the second L-shaped water pipe 312, the first straight water pipe 313, the third L-shaped water pipe 321, the fourth L-shaped water pipe 322, and the second straight water pipe 323, the coolant flows evenly in the top seat 11 and the upper mold body 122, and absorbs the heat conducted in the molding system 2. The coolant that has absorbed the heat finally discharges from the other end of the mold base 12, promoting the demolding operation of the lower shell and improving the forming processing efficiency of the lower shell.

[0038] In addition, when injecting plastic into the molding system 2 through the pouring port 111, the temperature regulator 4 can adjust the temperature of the plastic when it enters the molding cavity 21, enabling the plastic to always remain in a molten state before completely entering the molding cavity 21, and avoiding uneven heating of the plastic; positioning blocks 24 are provided at the four corners of the front mold 22, which can play a role in fixing the front mold 22, preventing offset between the front mold 22 and the rear mold 23 and deformation of the molding cavity 21, and improving the forming quality of the lower shell. The ventilation holes 121 on the outer surface of the base 13 enhance the heat dissipation effect of the molding system, further improving the forming processing efficiency of the lower shell.

[0039] As Figure 1-8 shown, on the basis of the above technical solution, the present application can also be improved as follows.

[0040] In one embodiment, a locking member 124 is connected between the side walls of the upper mold body 122 and the side walls of the lower mold body 123.

[0041] In this embodiment, the locking member 124 can lock the upper mold body 122 and the lower mold body 123, preventing the upper mold body 122 and the lower mold body 123 from shifting in position during plastic pouring, and ensuring the accuracy of the geometric dimensions of the molding cavity 21.

[0042] In one embodiment, the temperature control system 3 further includes a third water circuit 33. The third water circuit 33 includes a fifth L-shaped water pipe 331, a sixth L-shaped water pipe 332, and a first U-shaped water pipe 333 provided in the upper mold body 122. The first U-shaped water pipe 333 is disposed around the outer wall of the front mold 22. The fifth L-shaped water pipe 331 is provided at the input end of the temperature control system 3, and the sixth L-shaped water pipe 332 is provided at the output end of the temperature control system 3. One end of the fifth L-shaped water pipe 331 and one end of the sixth L-shaped water pipe 332 penetrate into the side wall of one end of the upper mold body 122, and the other end of the fifth L-shaped water pipe 331 and the other end of the sixth L-shaped water pipe 332 are both connected to the first U-shaped water pipe 333.

[0043] In this embodiment, the coolant can uniformly cool the upper mold body 122 under the conveyance of the fifth L-shaped water pipe 331, the sixth L-shaped water pipe 332, and the first U-shaped water pipe 333, thereby accelerating the cooling rate of the lower shell in the molding system 2.

[0044] In one embodiment, the temperature control system 3 further includes a fourth water circuit 34. The fourth water circuit 34 includes a seventh L-shaped water pipe 341, an eighth L-shaped water pipe 342, and a second U-shaped water pipe 343 provided in the lower mold body 123. The second U-shaped water pipe 343 is disposed around the outer wall of the rear mold 23. The seventh L-shaped water pipe 341 is provided at the input end of the temperature control system 3, and the eighth L-shaped water pipe 342 is provided at the output end of the temperature control system 3. One end of the seventh L-shaped water pipe 341 and one end of the eighth L-shaped water pipe 342 penetrate into the side wall of one end of the lower mold body 123, and the other end of the seventh L-shaped water pipe 341 and the other end of the eighth L-shaped water pipe 342 are both connected to the second U-shaped water pipe 343. The temperature control system 3 further includes a fifth water circuit 35. The fifth water circuit 35 includes a third straight water pipe 351, a first vertical water pipe 352, a second vertical water pipe 353, and a third vertical water pipe 354 provided in the lower mold body 123. One end of the third straight water pipe 351 penetrates into the side wall of one end of the lower mold body 123, and the other end of the third straight water pipe 351 penetrates out of the opposite side wall of the other end of the lower mold body 123. The first vertical water pipe 352, the second vertical water pipe 353, and the third vertical water pipe 354 are vertically arranged. One end of the first vertical water pipe 352, the second vertical water pipe 353, and the third vertical water pipe 354 are all connected to the third straight water pipe 351, and the other ends of the first vertical water pipe 352, the second vertical water pipe 353, and the third vertical water pipe 354 extend into the rear mold 23.

[0045] In this embodiment, the coolant can fully absorb the heat transferred from the molding cavity 21 to the lower mold body 123 under the conveyance of the seventh L-shaped water pipe 341, the eighth L-shaped water pipe 342, the second U-shaped water pipe 343, the third straight water pipe 351, the first vertical water pipe 352, the second vertical water pipe 353, and the third vertical water pipe 354, thereby further accelerating the cooling rate of the lower shell in the molding cavity 21 and improving the molding processing efficiency of the lower shell.

[0046] In one embodiment, springs 14 are connected between the four corners of the support assembly 1 and the molding system 2; a slide 25 is connected between the front mold 22 and the rear mold 23. One end of the slide 25 is connected to the side walls of the front mold 22 and the rear mold 23, and the other end of the slide 25 passes through the outer wall of the mold base 12; a cam pin 26 is connected to the slide 25.

[0047] In this embodiment, the springs can buffer the support assembly 1 and the molding system 2, reduce the impact between the two, and improve the service life of the mold. The slide 25 can facilitate the demolding of the lower shell, and the cam pin 26 can play a guiding role during demolding.

[0048] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0049] 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 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 construed as a limitation to the present application.

[0050] In the description of the present application, unless otherwise clearly specified and limited, for example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0051] 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 actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" 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 not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0052] The above has introduced the solution provided by the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those skilled in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A lower shell mold for a desktop thermal printer, characterized in that, Comprising: A support component, the support component includes a top seat, a die carrier and a base connected in sequence from top to bottom. A pouring port is provided on the upper surface of the top seat, and a receiving cavity is provided in the die carrier; A molding system, the molding system is arranged in the receiving cavity. A molding cavity is provided in the molding system, and a channel is provided between the molding cavity and the pouring port. The channel communicates with the top seat and the die carrier; A temperature control system, the input end of the temperature control system penetrates into the outer wall of one end of the die carrier, and the output end of the temperature control system penetrates out of the opposite outer wall of the other end of the die carrier. The temperature control system includes a first waterway. The first waterway includes a first L-shaped water pipe, a second L-shaped water pipe and a first straight water pipe arranged in the top seat and all located on the same horizontal plane; the first L-shaped water pipe is arranged at the input end of the temperature control system, the second L-shaped water pipe is arranged at the output end of the temperature control system, and the first straight water pipe is connected between the first L-shaped water pipe and the second L-shaped water pipe; one end of the first L-shaped water pipe and one end of the second L-shaped water pipe both penetrate into the side wall of one end of the top seat, and the other end of the first L-shaped water pipe and the other end of the second L-shaped water pipe both penetrate out of the adjacent side wall of the other end of the top seat; Wherein, the molding system includes a front mold and a rear mold. The front mold is arranged directly above the rear mold. The molding cavity is arranged between the front mold and the rear mold. Positioning blocks are connected between the four corners of the front mold and the die carrier. A plurality of air vents are provided on the outer surfaces of the top seat and the base; a temperature regulator is connected to the side wall of the top seat, and the temperature regulator communicates with the pouring port. The pouring port protrudes from the top surface of the top seat.

2. The lower shell mold of the desktop thermal printer according to claim 1, wherein: The die carrier includes a connected upper die body and a lower die body. The upper die body is arranged directly above the lower die body. The temperature control system further includes a second waterway. The second waterway includes a third L-shaped water pipe, a fourth L-shaped water pipe and a second straight water pipe arranged in the upper die body and all located in the same vertical plane; the third L-shaped water pipe is arranged at the input end of the temperature control system, the fourth L-shaped water pipe is arranged at the output end of the temperature control system, one end of the third L-shaped water pipe and one end of the fourth L-shaped water pipe both penetrate into the side wall of one end of the upper die body, and the other end of the third L-shaped water pipe and the other end of the fourth L-shaped water pipe are both connected to the second straight water pipe.

3. The lower shell mold of the desktop thermal printer according to claim 2, wherein: A locking member is connected between the side wall of the upper die body and the side wall of the lower die body.

4. The lower shell mold of the desktop thermal printer according to claim 2, characterized in that: The temperature control system further includes a third waterway. The third waterway includes a fifth L-shaped water pipe, a sixth L-shaped water pipe and a first U-shaped water pipe arranged in the upper die body. The first U-shaped water pipe is arranged around the outer wall of the front mold; the fifth L-shaped water pipe is arranged at the input end of the temperature control system, the sixth L-shaped water pipe is arranged at the output end of the temperature control system, one end of the fifth L-shaped water pipe and one end of the sixth L-shaped water pipe both penetrate into the side wall of one end of the upper die body, and the other end of the fifth L-shaped water pipe and the other end of the sixth L-shaped water pipe are both connected to the first U-shaped water pipe.

5. The lower shell mold of the desktop thermal printer according to claim 2, characterized in that: The temperature control system further includes a fourth waterway, and the fourth waterway includes a seventh L-shaped water pipe, an eighth L-shaped water pipe, and a second U-shaped water pipe provided in the lower mold body. The second U-shaped water pipe is disposed around the outer wall of the rear mold. The seventh L-shaped water pipe is provided at the input end of the temperature control system, and the eighth L-shaped water pipe is provided at the output end of the temperature control system. One end of the seventh L-shaped water pipe and one end of the eighth L-shaped water pipe both penetrate through one side wall of the lower mold body, and the other end of the seventh L-shaped water pipe and the other end of the eighth L-shaped water pipe are both connected to the second U-shaped water pipe.

6. The lower shell mold of the desktop thermal printer according to claim 5, characterized in that: The temperature control system further includes a fifth waterway, and the fifth waterway includes a third straight water pipe, a first vertical water pipe, a second vertical water pipe, and a third vertical water pipe provided in the lower mold body. One end of the third straight water pipe penetrates through one side wall of the lower mold body, and the other end of the third straight water pipe penetrates through the opposite side wall at the other end of the lower mold body. The first vertical water pipe, the second vertical water pipe, and the third vertical water pipe are vertically arranged. One end of the first vertical water pipe, the second vertical water pipe, and the third vertical water pipe are all connected to the third straight water pipe, and the other ends of the first vertical water pipe, the second vertical water pipe, and the third vertical water pipe extend into the rear mold.

7. The lower shell mold of the desktop thermal printer according to claim 1, characterized in that: Springs are connected between the four corners of the support assembly and the molding system.

8. The lower shell mold of the desktop thermal printer according to claim 1, characterized in that: A slider is connected between the front mold and the rear mold. One end of the slider is connected to the side walls of the front mold and the rear mold, and the other end of the slider penetrates through the outer wall of the mold base.

9. The lower shell mold of the desktop thermal printer according to claim 8, characterized in that: An inclined guide post is connected to the slider.

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