Upper shell cover mold of desktop thermal printer

Abstract

The invention relates to a desktop thermal printer upper shell cover mold, which comprises a mold base, a mold core, a mold core, a mold core, a mold core, a mold core and a mold cover, and is characterized in that the upper surface of 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. According to the upper shell cover mold, molten plastic is injected into the forming system of the mold through the flow guide pipe, after an upper shell cover is formed in the forming cavity, cooling liquid is introduced into the outer side of the upper shell cover through the first water way, the cooling liquid is conveyed through the first straight pipe and the second straight pipe, heat on the surface of the upper shell cover is rapidly absorbed, and the heat dissipation efficiency is improved. Therefore, the cooling rate of the upper shell cover is increased, and finally the machining efficiency of the upper shell cover is improved.

Description

Technical Field

[0001] The present application relates to the field of thermal printing technology, and in particular to an upper shell cover 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 cover of desktop thermal printers is mostly processed by molds. The upper shell cover mold has the following defects during use: the upper shell cover is often too high in temperature 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 cover 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 cover mold to solve the problem of low molding and processing efficiency of the existing desktop thermal printer upper shell cover 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 cover 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, the mold base comprises a carrier, an upper mold base, a lower mold base and a base which are connected in sequence, the pouring port passes through the middle of the carrier, and the accommodating cavity is arranged in the upper mold base and the lower mold base;

[0011] The cooling system comprises a first water circuit, the first water circuit comprises a first straight pipe and a second straight pipe, the flow guide pipe is arranged between the first straight pipe and the second straight pipe, the input end of the first straight pipe and the input end of the second straight pipe both penetrate through one side wall of the bearing member, and the output end of the first straight pipe and the output end of the second straight pipe both penetrate through another opposite side wall of the bearing member;

[0012] The flow guide tube comprises a feed port, a barrel and a discharge port, and the inner diameter of the feed port is larger than the inner diameter of the discharge port.

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

[0014] Optionally, the first water channel also includes a third L-shaped tube, a fourth L-shaped tube, a fourth straight tube, a first vertical tube and a second vertical tube, the first vertical tube and the second vertical tube are arranged in parallel and are both embedded in the upper mold base, and the first vertical tube and the second vertical tube are perpendicular to the fourth straight tube; the input end of the third L-shaped tube passes through a side wall of the upper mold base, the output end of the third L-shaped tube is connected to the input end of the fourth straight tube, the output end of the fourth straight tube passes through the first vertical tube and the second vertical tube in sequence and 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.

[0015] Optionally, the first water channel also includes a fifth L-shaped tube, a sixth L-shaped tube, a first oblique tube, a third vertical tube and a fourth vertical tube, the input end of the fifth L-shaped tube passes through a side wall of the upper mold base, the output end of the fifth L-shaped tube is connected to the top end of the third vertical tube, the bottom end of the third vertical tube extends into the upper mold base, the third vertical tube is connected to the fourth vertical tube through the first oblique tube, the bottom end of the fourth vertical tube extends into the upper mold base, the top end of the fourth vertical 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 another opposite side wall of the upper mold base.

[0016] Optionally, the cooling system includes a second water circuit, the second water circuit includes a seventh L-shaped tube, a first U-shaped tube and an eighth L-shaped tube, the first U-shaped tube is embedded in the lower mold base, and one side of the first U-shaped tube is larger than the other opposite side; the input end of the seventh L-shaped tube passes through a side wall of the lower mold base, the output end of the seventh L-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 eighth L-shaped tube, and the output end of the eighth L-shaped tube passes through the other opposite side wall of the lower mold base.

[0017] Optionally, the second water channel also includes a ninth L-shaped tube, a fifth straight tube and a tenth L-shaped tube, the input end of the ninth L-shaped tube passes through a side wall of the lower mold base, the output end of the ninth L-shaped tube is connected to the input end of the fifth straight tube, the output end of the fifth straight tube is connected to the input end of the tenth L-shaped tube, and the output end of the tenth L-shaped tube passes through another opposite side wall of the lower mold base.

[0018] Optionally, both the input and output ends of the first water channel and the input and output ends of the second water channel are provided with pipe joints.

[0019] Optionally, a plurality of first support columns are connected between the bearing member and the upper die seat, and a first spring is sleeved on the first support column.

[0020] Optionally, a plurality of second support columns are connected between the lower die seat and the base, and a second spring is sleeved on the second support column.

[0021] Optionally, a plurality of ejector pin holes are provided on the surface of the base.

[0022] An upper shell cover mold for a desktop thermal printer provided in an embodiment of the present application injects molten plastic into a molding system of the mold through a guide pipe. After the upper shell cover is formed in a molding cavity, coolant is introduced to the outside of the upper shell cover through a first water channel. The coolant is transmitted through a first straight pipe and a second straight pipe to quickly absorb the heat on the surface of the upper shell cover, thereby accelerating the cooling rate of the upper shell cover and ultimately improving the processing efficiency of the upper shell cover. 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 cover mold described in an embodiment of the present application;

[0025] Figure 2 This is a schematic diagram of the installation of a first water channel and a guide tube in an upper shell cover mold of a desktop thermal printer described in an embodiment of the present application;

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

[0027] Figure 4 Schematic diagram of the installation of the first water channel and the accommodating cavity in the upper shell cover mold of a desktop thermal printer described in an embodiment of the present application Figure 1 ;

[0028] Figure 5 Schematic diagram of the installation of the first water channel and the accommodating cavity in the upper shell cover mold of a desktop thermal printer described in an embodiment of the present application Figure 2 ;

[0029] Figure 6 This is a schematic diagram of the installation of a second water channel and a lower mold base in an upper shell cover mold of a desktop thermal printer described in an embodiment of the present application;

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

[0032] In the figure: 1. mold base; 11. bearing member; 111. pouring port; 12. upper mold base; 13. lower mold base; 14. base; 141. ejector hole; 15. accommodating cavity; 16. flow guide tube; 161. feed port; 162. barrel; 163. discharge port; 17. first support column; 171. first spring; 18. second support column; 181. second spring; 2. molding system; 21. molding cavity; 3. cooling system; 31. first water channel; 311. first straight pipe; 312. second straight pipe; 313. first L-shaped pipe; 314 , second L-shaped tube; 315, third straight tube; 316, third L-shaped tube; 317, fourth L-shaped tube; 318, fourth straight tube; 319, first vertical tube; 320, second vertical tube; 321, fifth L-shaped tube; 322, sixth L-shaped tube; 323, first oblique tube; 324, third vertical tube; 325, fourth vertical tube; 33, second waterway; 331, seventh L-shaped tube; 332, first U-shaped tube; 333, eighth L-shaped tube; 334, ninth L-shaped tube; 335, fifth straight tube; 336, tenth L-shaped tube; 34, pipe joint. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figure 1-8 As shown, in some embodiments, a desktop thermal printer upper shell cover mold includes a mold base 1, a molding system 2 and a cooling system 3. A pouring port 111 is provided on the upper surface of the mold base 1, and a receiving cavity 15 is provided in the mold base 1; the molding system 2 is provided in the receiving cavity 15, and a molding cavity 21 is provided in the molding system 2, and a guide tube 16 is connected between the molding cavity 21 and the pouring port 111; the input end of the cooling system 3 penetrates from one side wall of the mold base 1, and the output end of the cooling system 3 penetrates from another opposite side wall of the mold base 1.

[0035] 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, a pouring port 111 passes through the middle of the carrier 11, and a receiving cavity 15 is provided in the upper mold base 12 and the lower mold base 13. The cooling system 3 includes a first water channel 31, the first water channel 31 includes a first straight pipe 311 and a second straight pipe 312, and a flow guide pipe 16 is provided between the first straight pipe 311 and the second straight pipe 312, the input end of the first straight pipe 311 and the input end of the second straight pipe 312 both penetrate from one side wall of the carrier 11, and the output end of the first straight pipe 311 and the output end of the second straight pipe 312 both penetrate from another opposite side wall of the carrier 11. The flow guide pipe 16 includes a feed port 161, a barrel 162 and a discharge port 163, and the inner diameter of the feed port 161 is larger than the inner diameter of the discharge port 163.

[0036] In this embodiment, the plastic is heated and melted in the heating barrel, and then, pushed by the screw or plunger of the injection machine, the molten plastic enters the molding cavity 21 from the injection port 111 and the guide tube 16 through the injection machine nozzle, and the upper mold base 12 and the lower mold base 13 are tightened to prevent the molten plastic from overflowing from the molding cavity 21; after the molten plastic completely fills the molding cavity 21, coolant is simultaneously introduced into the input end of the first straight tube 311 and the input end of the second straight tube 312, and the coolant absorbs the heat transferred from the upper shell cover in the molding cavity 21 to the carrier 11, and the coolant that absorbs the heat is finally discharged from the output end of the first straight tube 311 and the output end of the second straight tube 312, thereby accelerating the cooling rate of the upper shell cover and improving the molding efficiency of the upper shell cover.

[0037] The opening of the flow guide tube 16 is located in the middle of the carrier 11, and the molten plastic enters the barrel 162 from the feed port 161, and finally flows into the molding cavity 21 from the discharge port 163; the opening of the feed port 161 is larger than the opening of the discharge port 163, which can facilitate the molten plastic to enter the molding cavity 21. The carrier 11 and the base 14 mainly play a bearing role, and the upper mold base 12 and the lower mold base 13 can protect the molding cavity 21.

[0038] 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 313, a second L-shaped tube 314 and a third straight tube 315. The input end of the first L-shaped tube 314 passes through a side wall of the upper mold base 12, the output end of the first L-shaped tube 313 is connected to the input end of the third straight tube 315, the output end of the third straight tube 315 is connected to the input end of the second L-shaped tube 314, and the output end of the second L-shaped tube 314 passes through a side wall of the upper mold base 12.

[0040] In this embodiment, production personnel can introduce coolant into the input end of the first L-shaped tube 314. The coolant is transmitted through the third straight tube 315 into the interior of the upper mold base 12, and absorbs the heat transferred from the upper shell cover to the upper mold base 12. The coolant that absorbs the heat is finally discharged from the output end of the second L-shaped tube 314, thereby further accelerating the cooling rate of the upper shell cover and improving the molding efficiency of the upper shell cover.

[0041] In one embodiment, the first water channel 31 also includes a third L-shaped tube 316, a fourth L-shaped tube 317, a fourth straight tube 318, a first vertical tube 319 and a second vertical tube 320. The first vertical tube 319 and the second vertical tube 320 are arranged in parallel and are both embedded in the upper mold base 12. The first vertical tube 319 and the second vertical tube 320 are perpendicular to the fourth straight tube 318. The input end of the third L-shaped tube 316 passes through a side wall of the upper mold base 12, and the output end of the third L-shaped tube 316 is connected to the input end of the fourth straight tube 318. The output end of the fourth straight tube 318 passes through the first vertical tube 319 and the second vertical tube 320 in sequence and is connected to the input end of the fourth L-shaped tube 317. The output end of the fourth L-shaped tube 317 passes through the other opposite side wall of the upper mold base 12.

[0042] In this embodiment, the production personnel can also introduce coolant into the input end of the third L-shaped tube 316. The coolant is transmitted through the fourth straight tube 318, the first vertical tube 319 and the second vertical tube 320 to further absorb the heat transferred from the upper shell cover to the upper mold base 12. The coolant that absorbs the heat is finally discharged from the output end of the fourth L-shaped tube 317, thereby further accelerating the cooling rate of the upper shell cover and improving the molding efficiency of the upper shell cover.

[0043] In one embodiment, the first water channel 31 also includes a fifth L-shaped tube 321, a sixth L-shaped tube 322, a first oblique tube 323, a third vertical tube 324 and a fourth vertical tube 325. The input end of the fifth L-shaped tube 321 passes through a side wall of the upper mold base 12, the output end of the fifth L-shaped tube 321 is connected to the top end of the third vertical tube 324, the bottom end of the third vertical tube 324 extends into the upper mold base 12, the third vertical tube 324 is connected to the fourth vertical tube 325 through the first oblique tube 323, the bottom end of the fourth vertical tube 325 extends into the upper mold base 12, the top end of the fourth vertical tube 325 is connected to the input end of the sixth L-shaped tube 322, and the output end of the sixth L-shaped tube 322 passes through another opposite side wall of the upper mold base 12.

[0044] In this embodiment, the production personnel can also introduce cooling liquid into the input end of the fifth L-shaped tube 321. The cooling liquid is transmitted through the third vertical tube 324, the first inclined tube 323 and the fourth vertical tube 325 to further absorb the heat transferred from the upper shell cover to the upper mold base 12. The cooling liquid that absorbs the heat is finally discharged from the output end of the sixth L-shaped tube 322, thereby further accelerating the cooling rate of the upper shell cover and improving the molding efficiency of the upper shell cover.

[0045] In one embodiment, the cooling system 3 includes a second water circuit 33, the second water circuit 33 includes a seventh L-shaped tube 331, a first U-shaped tube 332 and an eighth L-shaped tube 333, the first U-shaped tube 322 is embedded in the lower mold base 13, and one side of the first U-shaped tube 332 is larger than the other opposite side; the input end of the seventh L-shaped tube 331 penetrates from a side wall of the lower mold base 13, the output end of the seventh L-shaped tube 331 is connected to the input end of the first U-shaped tube 332, the output end of the first U-shaped tube 332 is connected to the input end of the eighth L-shaped tube 333, and the output end of the eighth L-shaped tube 331 penetrates from the other opposite side wall of the lower mold base 13.

[0046] In this embodiment, the production personnel can also introduce coolant into the input end of the seventh L-shaped tube 331. The coolant is transmitted through the first U-shaped tube 332 to further absorb the heat transferred from the upper shell cover to the lower mold base 13. The coolant that absorbs the heat is finally discharged from the output end of the eighth L-shaped tube 331, thereby further accelerating the cooling rate of the upper shell cover and improving the molding efficiency of the upper shell cover.

[0047] In one embodiment, the second water channel 33 also includes a ninth L-shaped tube 334, a fifth straight tube 335 and a tenth L-shaped tube 336, the input end of the ninth L-shaped tube 334 passes through a side wall of the lower mold base 13, the output end of the ninth L-shaped tube 334 is connected to the input end of the fifth straight tube 335, the output end of the fifth straight tube 335 is connected to the input end of the tenth L-shaped tube 336, and the output end of the tenth L-shaped tube 336 passes through another opposite side wall of the lower mold base 13.

[0048] In this embodiment, production personnel can also introduce coolant into the input end of the ninth L-shaped tube 334. The coolant is transmitted through the fifth straight tube 335 to further absorb the heat transferred from the upper shell cover to the lower mold base 13. The coolant that absorbs the heat is finally discharged from the output end of the tenth L-shaped tube 336, thereby further accelerating the cooling rate of the upper shell cover and improving the molding efficiency of the upper shell cover.

[0049] In one embodiment, both the input and output ends of the first water channel 31 and the input and output ends of the second water channel 33 are provided with pipe joints 34 .

[0050] In this embodiment, the pipe joint 34 can be suitable for water channels with different pipe diameters, thereby facilitating the processing of molds of different specifications.

[0051] In one embodiment, a plurality of first support columns 17 are connected between the carrier 11 and the upper die base 12 , and first springs 171 are sleeved on the first support columns 17 .

[0052] In this embodiment, there are four first support columns 17, which are respectively arranged at the four corners of the carrier 11, so as to strengthen the structural strength of the upper die seat 12. The first spring 171 is sleeved on the corresponding first support column 17, so as to buffer the impact between the carrier 11 and the upper die seat 12, thereby improving the service life of the upper die seat 12.

[0053] In one embodiment, a plurality of second support columns 18 are connected between the lower die holder 13 and the base 14 , and second springs 181 are sleeved on the second support columns 18 .

[0054] In this embodiment, there are four second support columns 18, which are respectively arranged at the four corners of the base 14, so as to strengthen the structural strength of the lower die base 13. The second spring 181 is sleeved on the corresponding second support column 18, so as to buffer the impact between the lower die base 13 and the base 14, thereby improving the service life of the lower die base 13.

[0055] In one embodiment, a plurality of ejector pin holes 141 are disposed on the surface of the base 14 .

[0056] In this embodiment, an ejector pin is installed in the ejector pin hole 141 , and the ejector pin can push the upper film seat 12 and the lower mold seat 13 apart, so that the molded upper shell cover can be quickly taken out.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 cover 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, the mold base comprises a carrier, an upper mold base, a lower mold base and a base which are connected in sequence, the pouring port passes through the middle of the carrier, and the accommodating cavity is arranged in the upper mold base and the lower mold base; The cooling system comprises a first water circuit, the first water circuit comprises a first straight pipe and a second straight pipe, the flow guide pipe is arranged between the first straight pipe and the second straight pipe, the input end of the first straight pipe and the input end of the second straight pipe both penetrate through one side wall of the bearing member, and the output end of the first straight pipe and the output end of the second straight pipe both penetrate through another opposite side wall of the bearing member; The flow guide tube comprises a feed port, a barrel and a discharge port, and the inner diameter of the feed port is larger than the inner diameter of the discharge port.

2. The desktop thermal printer upper shell cover 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 third straight tube. The input end of the first L-shaped tube passes through a side wall of the upper mold base, the output end of the first L-shaped tube is connected to the input end of the third straight tube, the output end of the third 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 a side wall of the upper mold base.

3. The desktop thermal printer upper shell cover mold according to claim 2, characterized in that: The first water channel also includes a third L-shaped tube, a fourth L-shaped tube, a fourth straight tube, a first vertical tube and a second vertical tube. The first vertical tube and the second vertical tube are arranged in parallel and are both embedded in the upper mold base. The first vertical tube and the second vertical tube are perpendicular to the fourth straight tube. The input end of the third L-shaped tube passes through a side wall of the upper mold base, and the output end of the third L-shaped tube is connected to the input end of the fourth straight tube. The output end of the fourth straight tube passes through the first vertical tube and the second vertical tube in sequence and is connected to the input end of the fourth L-shaped tube. The output end of the fourth L-shaped tube passes through the other opposite side wall of the upper mold base.

4. The desktop thermal printer upper shell cover mold according to claim 3, characterized in that: The first water channel also includes a fifth L-shaped tube, a sixth L-shaped tube, a first oblique tube, a third vertical tube and a fourth vertical tube. The input end of the fifth L-shaped tube passes through a side wall of the upper mold base, the output end of the fifth L-shaped tube is connected to the top end of the third vertical tube, the bottom end of the third vertical tube extends into the upper mold base, the third vertical tube is connected to the fourth vertical tube through the first oblique tube, the bottom end of the fourth vertical tube extends into the upper mold base, the top end of the fourth vertical 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 upper mold base.

5. The desktop thermal printer upper shell cover mold according to claim 1, characterized in that: The cooling system includes a second water circuit, which includes a seventh L-shaped tube, a first U-shaped tube and an eighth L-shaped tube, wherein the first U-shaped tube is embedded in the lower mold base, and one side of the first U-shaped tube is larger than the other opposite side; the input end of the seventh L-shaped tube penetrates from a side wall of the lower mold base, the output end of the seventh L-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 eighth L-shaped tube, and the output end of the eighth L-shaped tube penetrates from the other opposite side wall of the lower mold base.

6. The desktop thermal printer upper shell cover mold according to claim 5, characterized in that: The second water channel also includes a ninth L-shaped tube, a fifth straight tube and a tenth L-shaped tube, the input end of the ninth L-shaped tube passes through a side wall of the lower mold base, the output end of the ninth L-shaped tube is connected to the input end of the fifth straight tube, the output end of the fifth straight tube is connected to the input end of the tenth L-shaped tube, and the output end of the tenth L-shaped tube passes through another opposite side wall of the lower mold base.

7. The desktop thermal printer upper shell cover mold according to claim 5, characterized in that: The input and output ends of the first water channel and the input and output ends of the second water channel are both provided with pipe joints.

8. The desktop thermal printer upper shell cover mold according to claim 1, characterized in that: A plurality of first support columns are connected between the bearing member and the upper die seat, and a first spring is sleeved on the first support column.

9. The desktop thermal printer upper shell cover mold according to claim 8, characterized in that: A plurality of second support columns are connected between the lower die seat and the base, and a second spring is sleeved on the second support column.

10. The desktop thermal printer upper shell cover mold according to claim 1, characterized in that: A plurality of ejector pin holes are arranged on the surface of the base.

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