Auxiliary coating device

Abstract

The embodiment of the utility model discloses an auxiliary coating device, the auxiliary coating device is used for assisting in coating a refrigeration module with a heat conduction material, the refrigeration module comprises a radiator and a semiconductor refrigeration device, and the semiconductor refrigeration device comprises two surfaces to be coated which are oppositely arranged; the auxiliary coating device comprises a connecting seat; the screen printing plate comprises a screen printing screen plate and connecting pieces arranged on the periphery of the screen printing screen plate in a surrounding mode, and the connecting pieces are rotationally connected with the connecting bases; and the scraper blade is used for blade coating of the heat conduction material, and when one of the two to-be-coated surfaces is placed on the radiator and the other one of the two to-be-coated surfaces is arranged corresponding to the silk-screen plate, the scraper blade is used for coating the heat conduction material on the to-be-coated surface arranged corresponding to the silk-screen plate through the silk-screen plate. A proper amount of heat conduction material is placed on the silk-screen plate, the scraper blade is pushed to push the heat conduction material to coat the silk-screen area, the heat conduction material is in uniform contact with the surface to be coated through the silk-screen plate, and the cold and heat conduction efficiency of the Peltier is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductor refrigeration device coating, in particular to an auxiliary coating device. Background Art

[0002] Peltier is translated from the English word "Peltier" and is also called semiconductor refrigerator in China. Peltier is used for cooling in many low-temperature environments. Peltier has relative heat-absorbing surface and heat-dissipating surface. After the two sides are coated with thermal grease, the heat-absorbing surface is fixed to the conductive part, and the heat-dissipating surface is fixed to the radiator. Thermal grease is commonly known as thermal paste, which is a paste-like substance.

[0003] The existing coating method is to first take out an appropriate amount of thermal grease and place it on the surface of the Peltier to be coated, and then use a scraper to scrape the thermal grease on all positions of the surface. However, this method makes it difficult to evenly coat the thermal grease on the entire surface, resulting in low cold and heat conduction efficiency of the Peltier. Utility Model Content

[0004] The utility model aims to provide an auxiliary coating device and a sample analyzer, aiming to solve the technical problem that it is difficult to evenly coat the thermal conductive silicone grease on the entire surface in the existing coating method, thus resulting in low cold and heat conduction efficiency of the Peltier.

[0005] In the first aspect, the utility model provides an auxiliary coating device for assisting in coating a thermally conductive material on a refrigeration module, wherein the refrigeration module includes a radiator and a semiconductor refrigeration device, wherein the semiconductor refrigeration device includes two surfaces to be coated that are relatively arranged; the auxiliary coating device includes: a connecting seat; a silk screen plate, wherein the silk screen plate includes a silk screen screen and connecting parts arranged around the silk screen screen, wherein the connecting parts are rotatably connected to the connecting seat; and a scraper for scraping the thermally conductive material, wherein when one of the two surfaces to be coated is placed on the radiator and the other is arranged corresponding to the silk screen screen, the scraper is used to coat the thermally conductive material through the silk screen screen on the surface to be coated corresponding to the silk screen screen.

[0006] Preferably, the connecting member is provided with a first positioning groove on the side facing the surface to be coated, the mesh holes of the silk screen plate are connected to the first positioning groove, and at least part of the semiconductor refrigeration device can extend into the first positioning groove and abut against the silk screen plate.

[0007] Preferably, a accommodating groove is provided on the side of the connecting member away from the surface to be coated, and the accommodating groove is connected with the first positioning groove through the mesh of the silk screen plate, the accommodating groove is used to accommodate the thermal conductive material, and the scraper is used to coat the thermal conductive material on the surface to be coated corresponding to the silk screen plate.

[0008] Preferably, the auxiliary coating device further comprises a base, the connecting seat is mounted on the base, the heat sink is placed on the base, and the connecting seat can be positioned along the first direction to abut against the heat sink.

[0009] Preferably, the auxiliary coating device further comprises a positioning member, wherein the positioning member is mounted on the base and is used for positioning and abutting against the heat sink along a second direction, and the first direction and the second direction are arranged at an angle.

[0010] Preferably, the auxiliary coating device further comprises a rotating mechanism, and the connecting member is rotatably connected to the connecting seat via the rotating mechanism.

[0011] Preferably, the rotating mechanism is detachably connected to the connecting piece, and the rotating mechanism includes a fixed plate, a first clamping plate, a second clamping plate, a pressure block and a mounting shaft. The fixed plate is installed on the connecting seat and is rotatably connected to the first clamping plate. The mounting shaft is arranged on the first clamping plate, the second clamping plate is sleeved on the mounting shaft, and the pressure block is sleeved on the mounting shaft and is threadedly connected to the mounting shaft.

[0012] Preferably, the rotating mechanism comprises a driving motor, the rotating shaft of the driving motor is drivingly connected to the connecting member, and is used to drive the connecting member to drive the screen printing plate to rotate, so that the screen printing plate is close to or away from the surface to be coated.

[0013] Preferably, the mesh depth of the silk screen screen is 0.5 mm to 3 mm.

[0014] Preferably, the area of ​​the screen printing plate is smaller than the area of ​​the surface to be coated; or,

[0015] The side length of the screen printing plate is 1 to 3 mm smaller than the side length of the corresponding surface to be coated.

[0016] The following beneficial effects are achieved by using the embodiments of the present invention:

[0017] By adopting the auxiliary coating device and sample analyzer of the utility model, the screen printing screen is arranged on the connecting piece, the connecting piece is rotatably connected with the connecting seat, and the screen printing screen is rotated so that the screen printing screen cover is arranged on the surface to be coated of the semiconductor refrigeration device, a proper amount of thermal conductive material is put on the screen printing plate, and the scraper is pushed so that the scraper pushes the thermal conductive material to be coated over the screen printing area, and the thermal conductive material is uniformly contacted with the surface to be coated through the screen printing screen, thereby improving the cold and heat conduction efficiency of the Peltier. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] in:

[0020] Figure 1 Schematic diagram of an auxiliary coating device in one embodiment.

[0021] Figure 2 for Figure 1 Schematic diagram of the silk screen printing screen in the auxiliary coating device shown.

[0022] Figure 3 for Figure 1 Schematic diagram of the rotating mechanism in the auxiliary coating device shown.

[0023] Figure numbers: 10, refrigeration module; 11, radiator; 111, second positioning groove; 12, semiconductor refrigeration device; 121, surface to be coated; 100, base; 200, connecting seat; 300, silk screen plate; 310, silk screen screen; 311, mesh; 320, connecting piece; 321, first positioning groove; 330, accommodating groove; 400, scraper; 500, positioning piece; 600, rotating mechanism; 610, fixing plate; 620, first clamping plate; 630, second clamping plate; 640, mounting shaft; 641, screw rod; 650, pressing block; 700, fastener. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0026] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the said features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0027] See also Figures 1 to 3 The auxiliary coating device of one embodiment is used to assist in coating a heat-conducting material on a refrigeration module 10. The refrigeration module 10 includes a heat sink 11 and a semiconductor refrigeration device 12. The semiconductor refrigeration device 12 includes two surfaces 121 to be coated that are arranged opposite to each other.

[0028] The auxiliary coating device of this embodiment includes a connecting seat 200, a silk screen plate 300 and a scraper 400. The connecting seat 200 is placed on a platform or a table as a connecting body to support the connection and fixation of the parts thereon. The silk screen plate 300 includes a silk screen screen 310 and connecting parts 320 arranged around the silk screen screen 310. The connecting parts 320 are rotatably connected to the connecting seat 200. The scraper 400 is used to scrape and apply the thermal conductive material. When one of the two surfaces 121 to be coated is placed on the radiator 11 and the other is set corresponding to the silk screen screen 310, the scraper 400 is used to coat the thermal conductive material on the surface 121 to be coated corresponding to the silk screen screen 310 through the silk screen screen 310.

[0029] In this embodiment, the semiconductor cooling device 12 is a Peltier.

[0030] It can be understood that the silk screen screen 310 is arranged on the connecting member 320, and the connecting member 320 is rotatably connected to the connecting seat 200. By rotating the connecting member 320, the silk screen screen 310 can be covered on the surface to be coated 121 of the semiconductor refrigeration device 12, and a proper amount of thermal conductive material is placed on the silk screen 300, and the scraper 400 is pushed so that the scraper 400 pushes the thermal conductive material to be coated on the silk screen screen 310. The thermal conductive material is evenly contacted with the surface to be coated 121 through the silk screen screen 310, thereby improving the cold and heat conduction efficiency of the Peltier and ensuring that the sample analyzer can obtain stable cooling.

[0031] In one embodiment, see Figure 1A first positioning groove 321 is provided on the side of the connecting member 320 facing the surface 121 to be coated, and the mesh 311 of the silk screen stencil 310 is communicated with the first positioning groove 321. At least part of the semiconductor refrigeration device 12 can extend into the first positioning groove 321 and abut against the silk screen stencil 310. A receiving groove 330 is provided on the side of the connecting member 320 away from the surface 121 to be coated, and the receiving groove 330 is communicated with the first positioning groove 321 through the mesh 311 of the silk screen stencil 310. The receiving groove 330 is used to accommodate a heat-conducting material, and the scraper 400 is used to coat the heat-conducting material on the surface 121 to be coated set on the silk screen stencil 310.

[0032] It is not difficult to understand that a special picker is used to take an appropriate amount of thermal conductive material, and the thermal conductive material is scraped once along the longitudinal direction of the silk screen 310 with a scraper 400 to fill all the meshes 311 of the silk screen 310 with the thermal conductive material, and then the silk screen 310 is scraped once in both directions along the transverse direction, and finally scraped once in the longitudinal direction opposite to the first scraping direction to ensure that the thermal conductive material fills all the meshes 311 without overflow, that is, the coating process of the thermal conductive material is completed. The setting of the accommodating groove 330 can prevent the scraper 400 from pushing the thermal conductive material out of the silk screen 300 in the process of pushing the thermal conductive material to move, resulting in waste of thermal conductive material.

[0033] In this embodiment, the auxiliary coating device further includes a base 100, a connecting seat 200 is mounted on the base 100, and the radiator 11 is placed on the base 100. The connecting seat 200 can be positioned along a first direction to abut against the radiator 11 to prevent the radiator 11 from moving in the first direction to ensure the coating quality. The first direction is Figure 1 In the direction of X shown, the auxiliary fixing device sets the base 100, and placing the base 100 on the work station is compared to directly fixing the connecting seat 200 on the work station. The former method is easier for users to move and transfer the auxiliary coating device. The work station refers to a workbench or table, etc.

[0034] Furthermore, the auxiliary coating device further comprises a positioning member 500, the connection seat 200 is used to position and abut the radiator 11 along a first direction, the positioning member 500 is mounted on the base 100, and is used to position and abut the radiator 11 along a second direction, the first direction and the second direction are arranged at an angle, specifically, the first direction and the second direction are arranged perpendicularly, and the second direction is Figure 1 In the direction Y shown, the radiator 11 is limited in two directions by the arrangement of the connecting seat 200 and the positioning member 500, so as to prevent the radiator 11 from moving and affecting the coating effect.

[0035] In one embodiment, see Figure 1 and Figure 3 The auxiliary coating device also includes a rotating mechanism 600, and the connecting member 320 is rotatably connected to the connecting seat 200 through the rotating mechanism 600, so as to facilitate the rotation of the screen printing plate 300.

[0036] Further, the rotating mechanism 600 is detachably connected to the connecting member 320, and the rotating mechanism 600 includes a fixing plate 610, a first clamping plate 620, a second clamping plate 630, a pressing block 650 and a mounting shaft 640. The fixing plate 610 is installed on the connecting seat 200 and is rotatably connected to the first clamping plate 620. The mounting shaft 640 is arranged on the first clamping plate 620, the second clamping plate 630 is sleeved on the mounting shaft 640, and the pressing block 650 is sleeved on the mounting shaft 640. Threadedly connected to the installation shaft 640, the pressure block 650 is rotated so that the pressure block 650 pushes the second clamping plate 630 in the direction close to the first clamping plate 620, so that the first clamping plate 620 and the second clamping plate 630 clamp the connecting member 320, and the pressure block 650 is rotated in the opposite direction so that the pressure block 650 no longer abuts against the limiting first clamping plate 620, so that the first clamping plate 620 and the second clamping plate 630 release the restriction on the connecting member 320, so as to facilitate the replacement of the connecting member 320 after it is damaged.

[0037] In order to improve the efficiency of the coating operation, the rotating mechanism 600 of the present embodiment may further include a motor, which is connected to the hinge shaft of the first clamping plate 620 and the fixed plate 610, and is used to drive the hinge shaft to drive the first clamping plate 620 to rotate. The rotation of the first clamping plate 620 can drive the second clamping plate 630 and the connecting member 320 to rotate. The rotation of the clamping plate driven by the motor can improve the rotation efficiency of the connecting member 320, thereby improving the rotation efficiency of the silk-screen screen 310, thereby ensuring the efficiency of the coating operation.

[0038] Furthermore, the mounting shaft 640 includes a screw rod 641 and an optical axis, the second pressure plate is sleeved on the optical axis, at least a portion of the pressure block 650 is sleeved on the screw rod 641 and is threadedly connected to the screw rod 641, the pressure block 650 is rotated to push the second clamping plate 630 in the direction close to the first clamping plate 620, so that the first clamping plate 620 and the second clamping plate 630 clamp the connecting member 320, compared with the mounting shaft 640 being a screw rod shaft, only a portion of the thread is set on the mounting shaft 640, which can improve the structural strength of the mounting shaft 640, making the mounting shaft 640 more durable.

[0039] In another embodiment, the rotating mechanism 600 may only include a driving motor, the rotating shaft of which is transmission-connected to the connecting member 320, and is used to drive the connecting member 320 to drive the silk screen screen 310 to rotate, thereby making the silk screen screen 310 approach or move away from the surface to be coated 121, so as to automatically realize the rotation of the connecting member 320.

[0040] In one embodiment, see Figure 1 and Figure 2The depth of the mesh 311 of the silk screen 310 is 0.5 mm to 3 mm. The depth of the mesh 311 can be 0.5 mm, 1 mm, 1.5 mm, 2 mm or 3 mm. The coating thickness of the thermal conductive material on the surface 121 to be coated is controlled by the depth of the mesh 311. The specific depth of the mesh 311 can be adjusted according to the coating process standard.

[0041] In one embodiment, see Figure 1 and Figure 2 , the area of ​​the screen printing screen 310 is smaller than the area of ​​the surface to be coated 121; or, the side length of the screen printing screen 310 is 1 to 3 mm smaller than the side length of the corresponding surface to be coated 121. Specifically, the screen printing screen 310 has side lengths in two directions, and the side length in the first direction is Figure 2 As shown in a, the length of the side in the second direction is Figure 2 As shown in b, the surface to be coated 121 has side lengths in two directions, and the side length in the first direction is Figure 1 As shown in A, the length of the side in the second direction is Figure 2 As shown in B, the side length a of the screen printing screen 310 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm smaller than the side length A of the corresponding surface 121 to be coated, and the side length b of the screen printing screen 310 can be 1 mm, 1.5 mm, 2 mm, 2.5 mm or 3 mm smaller than the side length B of the corresponding surface 121 to be coated. The first direction is Figure 1 or Figure 2 The direction of X is shown, and the second direction is Figure 1 or Figure 2 The Y direction is shown, so that the thermal conductive material can be prevented from overflowing from the to-be-coated surface 121 during coating, thereby contacting other surrounding devices.

[0042] In one embodiment, a second positioning groove 111 is provided on the heat sink 11, and a surface 121 to be coated of the semiconductor refrigeration device 12 can be placed on the bottom surface of the second positioning groove 111. Flipping the semiconductor refrigeration device 12 can also place another surface 121 to be coated of the semiconductor refrigeration device 12 on the bottom surface of the second positioning groove 111. The second positioning groove 111 is provided to facilitate limiting the position of the semiconductor refrigeration device 12, so that the surface 121 to be coated of the semiconductor refrigeration device 12 can correspond to the rotated silk screen plate 310.

[0043] It can be seen that when a surface 121 to be coated is placed on the bottom surface of the second positioning groove 111, the silk screen plate 300 is rotated so that the silk screen screen 310 covers the surface 121 to be coated, and a proper amount of thermal conductive material is placed in the accommodating groove 330, and the scraper 400 is pushed to coat the thermal conductive material on the silk screen screen 310, so that the thermal conductive material can be in uniform contact with the surface 121 to be coated, and the semiconductor refrigeration device 12 is turned over so that the other surface 121 to be coated is placed on the bottom surface of the second positioning groove 111, and the connecting piece 320 is rotated again, and the thermal conductive material is coated on the silk screen screen 310 through the scraper 400, ensuring that the two surfaces 121 to be coated are evenly coated with the thermal conductive material.

[0044] In this embodiment, one of the two surfaces 121 to be coated is a cold surface, and the other surface 121 to be coated is a hot surface. The hot surface is placed on the radiator 11. The refrigeration module 10 also includes a conductive member, which is placed on the cold surface. The cold surface of the semiconductor refrigeration device 12 is connected or in contact with the low-temperature warehouse or the conductive liquid medium container through the conductive member.

[0045] In another embodiment, the base 100 is provided with a limiting groove, and the heat sink 11 is placed in the limiting groove to achieve installation limitation of the heat sink 11, so as to ensure that after the connecting member 320 is rotated, at least part of the semiconductor refrigeration device 12 can accurately enter the first positioning groove 321, thereby ensuring that the surface 121 to be coated can be evenly coated with the thermal conductive material.

[0046] In one embodiment, the connecting seat 200 is provided with a plurality of first connecting holes, the base 100 is provided with a second connecting hole, and the auxiliary coating device also includes a fastener 700, the fastener 700 passes through the first connecting hole and is detachably connected to the second connecting hole. There are a plurality of second connecting holes and fasteners 700, and they are respectively arranged one by one corresponding to each first connecting hole. The fastener 700 is arranged to achieve installation and fixation of the connecting seat 200.

[0047] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. An auxiliary coating device, used for assisting in coating a heat-conducting material on a refrigeration module, wherein the refrigeration module comprises a radiator and a semiconductor refrigeration device, wherein the semiconductor refrigeration device comprises two surfaces to be coated that are arranged opposite to each other; It is characterized in that The auxiliary coating device comprises: Connecting seat; A silk screen printing plate, the silk screen printing plate comprising a silk screen screen and connecting members arranged around the silk screen screen, the connecting members being rotatably connected to the connecting seat; and The scraper is used to scrape the thermal conductive material. When one of the two surfaces to be coated is placed on the radiator and the other is set corresponding to the silk screen, the scraper is used to coat the thermal conductive material on the surface to be coated corresponding to the silk screen through the silk screen.

2. The auxiliary coating device according to claim 1, characterized in that: The connecting member is provided with a first positioning groove on one side facing the surface to be coated, the mesh holes of the screen printing screen are connected to the first positioning groove, and at least part of the semiconductor refrigeration device can extend into the first positioning groove and abut against the screen printing screen.

3. The auxiliary coating device according to claim 2, characterized in that: A accommodating groove is provided on the side of the connecting member away from the surface to be coated, and the accommodating groove is connected with the first positioning groove through the mesh of the silk screen printing screen. The accommodating groove is used to accommodate the thermal conductive material, and the scraper is used to coat the thermal conductive material on the surface to be coated corresponding to the silk screen printing screen.

4. The auxiliary coating device according to claim 1, characterized in that: The auxiliary coating device also includes a base, the connecting seat is installed on the base, the heat sink is placed on the base, and the connecting seat can be positioned along a first direction to abut against the heat sink.

5. The auxiliary coating device according to claim 4, characterized in that: The auxiliary coating device further comprises a positioning member, which is mounted on the base and is used to position and abut against the heat sink along a second direction, and the first direction and the second direction are arranged at an angle.

6. The auxiliary coating device according to claim 1, characterized in that: The auxiliary coating device further comprises a rotating mechanism, and the connecting member is rotatably connected to the connecting seat via the rotating mechanism.

7. The auxiliary coating device according to claim 6, characterized in that: The rotating mechanism is detachably connected to the connecting piece, and the rotating mechanism includes a fixed plate, a first clamping plate, a second clamping plate, a pressure block and a mounting shaft. The fixed plate is installed on the connecting seat and is rotatably connected to the first clamping plate. The mounting shaft is arranged on the first clamping plate, the second clamping plate is sleeved on the mounting shaft, and the pressure block is sleeved on the mounting shaft and is threadedly connected to the mounting shaft.

8. The auxiliary coating device according to claim 6, characterized in that: The rotating mechanism comprises a driving motor, the rotating shaft of which is drivingly connected to the connecting member and is used to drive the connecting member to rotate the screen printing plate, so that the screen printing plate is close to or away from the surface to be coated.

9. The auxiliary coating device according to any one of claims 1 to 8, characterized in that: The mesh depth of the screen printing screen is 0.5 mm to 3 mm.

10. The auxiliary coating device according to any one of claims 1 to 8, characterized in that: The area of ​​the screen printing plate is smaller than the area of ​​the surface to be coated; or, The side length of the screen printing plate is 1 to 3 mm smaller than the side length of the corresponding surface to be coated.

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