Heat sink thermal paste application and sorting apparatus and method

Abstract

The application relates to a radiator thermal paste coating and sorting device and a coating and sorting method. The device comprises a rack and a coating mechanism. A grabbing mechanism and a thickness detection assembly are arranged on the side of the coating mechanism. An online station, a taking and placing station, a coating station, a detection station, a temporary storage station and an offline station are sequentially arranged on the side of the grabbing mechanism on the rack. The coating mechanism is installed at the coating station. A positioning plate is movably arranged below the coating mechanism on the rack. One limit position of the positioning plate is located at the coating station, and the other limit position is located at the taking and placing station. The thickness detection assembly is installed at the detection station. The grabbing mechanism is used for conveying the radiator between the online station and the taking and placing station, conveying the radiator between the taking and placing station and the detection station, and conveying the radiator between the detection station and the temporary storage station or the offline station. The device can realize feeding, thermal paste coating, thickness detection and rejection of unqualified products of the radiator, and has high automation degree.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radiator production, in particular to a radiator heat paste coating and sorting device and a coating and sorting method. BACKGROUND

[0002] The radiator in the air conditioner appliance box needs to be brushed with a certain thickness of heat paste on its back before assembly. However, in the existing production, the paste needs to be brushed manually by using a brush to dip the heat paste and then brush it on the back of the radiator. Such repeated operation has the following disadvantages:

[0003] Firstly, manual operation is single, and long-time operation is easy to cause fatigue, resulting in missed brushing and uneven thickness of the brushed paste; secondly, the degree of automation is low, which is not conducive to the development of the company in the era of sharp increase in labor cost and shortage of labor.

[0004] The existing technology with patent No. 201821910527.8 provides a heat paste coating device, which comprises a coating mechanism for coating heat paste on a radiator, and a positioning plate movably arranged below the coating mechanism, the positioning plate being used for positioning the radiator and driving the radiator to the coating process position below the coating mechanism. The up-line and down-line of the radiator both need to be put in and taken out in the positioning tool by manual operation, and the unqualified products also need to be handled by manual operation in time. The conveying mode of the radiator is plate chain conveying, which needs to invest in multiple conveying plates with positioning tools. SUMMARY

[0005] The present application aims to solve the above problems and provides a radiator heat paste coating and sorting device and a coating and sorting method.

[0006] One technical solution adopted by the present application to solve the technical problem is a radiator heat paste coating and sorting device, which comprises a rack and a coating mechanism, and a grabbing mechanism and a thickness detection assembly are arranged on the side of the coating mechanism.

[0007] An up-line station, a taking and placing station, a coating station, a detection station, a temporary storage station and a down-line station are sequentially arranged on the side of the grabbing mechanism on the rack.

[0008] The coating mechanism is installed at the coating station, and a positioning plate is movably arranged below the coating mechanism on the rack, one limit position of the positioning plate being located at the coating station and the other limit position being located at the taking and placing station.

[0009] The thickness detection assembly is installed at the detection station.

[0010] The upper line station and the taking and placing station are connected through the grabbing mechanism to realize the transportation of the heat sink, the taking and placing station and the detection station are connected through the grabbing mechanism to realize the transportation of the heat sink, and the detection station is connected through the grabbing mechanism to realize the transportation of the heat sink between the temporary storage station or the lower line station.

[0011] Further, the upper line station is sequentially provided with a vibrating disc and an upper line conveying belt, the discharging end of the vibrating disc is communicated with the input end of the upper line conveying belt, and the lower line conveying belt is installed between the taking and placing station and the coating station on the rack.

[0012] Further, the grabbing mechanism is a mechanical hand.

[0013] Alternatively, the grabbing mechanism comprises a taking and placing grabbing part and a screening grabbing part.

[0014] The taking and placing grabbing part is installed on the taking and placing station and comprises a horizontal moving seat, an upper line clamping cylinder and a detection clamping cylinder installed on the horizontal moving seat, the horizontal moving seat is installed on the rack through a horizontal moving assembly and is located above the positioning plate.

[0015] The upper line clamping cylinder is installed on the moving end of an upper line lifting cylinder, and the upper line lifting cylinder is fixedly installed on the horizontal moving seat.

[0016] The lower line clamping cylinder is installed on the moving end of a lower line lifting cylinder, and the lower line lifting cylinder is fixedly installed on the horizontal moving seat.

[0017] The screening assembly is installed on the detection station and comprises a vertical moving seat, a sorting lifting cylinder and a sorting clamping cylinder, the vertical moving seat is installed on the rack through a vertical moving assembly, the sorting lifting cylinder is fixedly installed on the vertical moving seat, and the sorting clamping cylinder is installed on the moving end of the sorting lifting cylinder.

[0018] Further, the positioning plate is driven to slide with the rack through a vertical moving assembly installed on the rack, and an L-shaped positioning baffle is arranged on the positioning plate.

[0019] A vertical moving cylinder and a horizontal moving cylinder are respectively installed on the opposite sides of the two plate parts of the L-shaped positioning baffle on the positioning plate, and a vertical pushing plate and a horizontal pushing plate are respectively installed at the ends of the cylinder rods of the vertical moving cylinder and the horizontal moving cylinder.

[0020] Further, the upper line conveying belt is provided with a baffle A on both sides, the upper line conveying belt is provided with a temporary storage groove A on the output side, the temporary storage groove A is provided with a pushing block A, the pushing block A is installed at the end of a pushing cylinder A, the pushing cylinder A is installed on the rack and arranged along the length direction of the temporary storage groove A, the input end of the temporary storage groove A is communicated with the output end of the upper line conveying belt, and the input end of the temporary storage groove A is provided with a photoelectric counting detection switch.

[0021] Further, the lower line conveying belt is provided with a baffle B on both sides, and a temporary storage groove B is installed on the output side of the lower line conveying belt, a pushing block B is arranged in the temporary storage groove B, the pushing block B is installed at the end of a pushing cylinder B, the pushing cylinder B is installed on the rack and arranged along the length direction of the temporary storage groove B, the input end of the temporary storage groove B is communicated with the output end of the lower line conveying belt, and a photoelectric detection switch is installed on the input end of the temporary storage groove B.

[0022] Further, a width adjusting plate is arranged between the corresponding two baffles on the lower line conveying belt and the upper line conveying belt, the width adjusting plate is slidably connected with one side of the baffle through a moving adjusting piece, and a conveying channel is formed between the width adjusting plate and the other side of the baffle.

[0023] The moving adjusting piece is a clamping plate, the clamping plate is arranged on the baffle, the inner end of the clamping plate is connected with the width adjusting plate, a strip hole perpendicular to the conveying direction is formed in the clamping plate, a fastening screw is arranged in the strip hole, and the fastening screw is threadedly connected with a locking hole in the baffle.

[0024] The moving adjusting piece is a guide rod, the guide rod is perpendicular to the conveying direction, the inner end of the guide rod is connected with the width adjusting plate, and the outer end of the guide rod penetrates through the baffle, and a locking pin for locking the guide rod is installed on the baffle.

[0025] Further, the coating mechanism comprises a paste barrel, a reciprocating scraping assembly and a paste thickness limiting plate.

[0026] The reciprocating scraping assembly comprises a base and a horizontal movement driving piece installed on the base, a fixing seat is installed at the moving end of the horizontal movement driving piece, a scraping cylinder is vertically installed at the left and right sides of the fixing seat, a scraping knife is installed at the end of the cylinder rod of the scraping cylinder, side baffles are arranged at the front and rear sides of the lower end of the fixing seat, and the two ends of the side baffles are connected with the ends of the cylinder rods of the scraping cylinders on the two sides.

[0027] A paste outlet is installed on the lower side of the fixing seat, and the paste outlet is connected with the output end of the paste barrel through a pipeline.

[0028] The paste thickness limiting plate is horizontally arranged, the left and right ends of the paste thickness limiting plate are detachably connected with side plates through connecting plates, the side plates are fixedly installed on the base, a coating positioning groove is arranged in the middle of the paste thickness limiting plate, the depth of the coating positioning groove is equal to the thickness of the required coating layer of the heat dissipation paste, and the number of the coating positioning grooves is equal to the number of the heat sinks.

[0029] The base is installed at the moving end of the lifting assembly, and the paste barrel and the lifting assembly are fixedly installed on the rack.

[0030] Further, at least one paste barrel is arranged, the output ends of the paste barrels are connected with the input ports of a multi-way valve through pipelines, and the output port of the multi-way valve is communicated with the paste outlet through a pipeline.

[0031] The horizontal moving assembly, the vertical moving assembly, the horizontal moving driving member and the lifting assembly can adopt an electric cylinder, a pneumatic cylinder, a hydraulic cylinder or a linear module.

[0032] Further, the thickness detection assembly is a laser thickness detector installed at the output end of the offline conveying belt.

[0033] Another technical solution adopted by the present application to solve the technical problem is to provide a coating and sorting method, which adopts the heat sink thermal paste coating and sorting device described above, and comprises the following steps:

[0034] S1: The feeding assembly feeds the heat sinks to the feeding station one by one, and when the number of heat sinks at the feeding station reaches a set value;

[0035] S2: The grabbing mechanism grabs all the heat sinks at the feeding station to the positioning plate at the taking and placing station;

[0036] S3: The positioning plate moves to the coating station with the heat sinks;

[0037] S4: The coating mechanism performs coating operation on the upper end surface of the heat sink;

[0038] S5: After the coating is completed, the positioning plate returns to the taking and placing station with the heat sinks;

[0039] S6: The grabbing mechanism grabs the coated heat sinks at the taking and placing station to the detection station, and the laser thickness detector detects the thickness of the coating on the heat sinks one by one;

[0040] If the detection result is that the thickness is qualified, step S7 is entered;

[0041] If the detection result is that the thickness is unqualified, step S8 is entered;

[0042] S7: The grabbing mechanism grabs the qualified heat sinks after detection to the offline station and outputs to the next processing procedure;

[0043] S8: The grabbing mechanism grabs the unqualified heat sinks after detection to the temporary storage station for centralized processing.

[0044] Compared with the prior art, the present application has the following beneficial effects: the heat sinks can be fed, the thermal paste can be coated, the thickness can be detected, and the unqualified products can be removed, the degree of automation is high, the quality risks of missing brushing and uneven brushing thickness caused by manual operation are eliminated, the quality of products is improved, and the efficiency is increased. BRIEF DESCRIPTION OF DRAWINGS

[0045] The present application will be further described below in combination with the drawings.

[0046] Figure 1 It is a structural schematic view of the device.

[0047] Figure 2 Fig. 1 is a structural schematic diagram of an upper conveying belt.

[0048] Figure 3 Fig. 2 is a structural schematic diagram of a pick-and-place grabbing piece.

[0049] Figure 4 Fig. 3 is a structural schematic diagram of a screening grabbing piece.

[0050] Figure 5 Fig. 4 is a structural schematic diagram of a mounting structure at a positioning plate.

[0051] Figure 6 Fig. 5 is a structural schematic diagram of a lower conveying belt.

[0052] Figure 7 Fig. 6 is a structural schematic diagram of a coating mechanism.

[0053] Figure 8 Fig. 7 is a structural schematic diagram of a thickness detection assembly.

[0054] Fig. 1 is a structural schematic diagram of an upper conveying belt. DETAILED DESCRIPTION

[0055] The preferred embodiments of the present application are described in more detail below, it should be understood, however, that the present application can be practiced in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art. It should be understood that the specific examples described herein are merely exemplary and are not intended to limit the scope of the application.

[0056] Example 1:

[0057] like Figures 1-8 As shown, a heat sink thermal paste coating and sorting device includes a frame 1 and a coating mechanism 6. A gripping mechanism 4 and a thickness detection component 8 are provided on the side of the coating mechanism.

[0058] The frame is provided with the following stations in sequence next to the gripping mechanism: online station, pick-and-place station, coating station, inspection station, temporary storage station, and offline station.

[0059] The coating mechanism is installed at the coating station. A positioning plate 5 is movably provided on the frame below the coating mechanism. One extreme position of the positioning plate is located at the coating station, and the other extreme position is located at the pick-up and drop-off station.

[0060] The thickness detection component is installed at the detection station;

[0061] The radiator 26 is transported between the online workstation and the pick-up / placement workstation via a gripping mechanism. The radiator is also transported between the pick-up / placement workstation and the inspection workstation via a gripping mechanism. Furthermore, the radiator is transported between the inspection workstation and the temporary storage workstation or the offline workstation via a gripping mechanism.

[0062] The method for coating and sorting using the aforementioned radiator thermal paste coating and sorting device includes the following steps:

[0063] S1: The feeding assembly delivers the heat sinks one by one to the feeding station. Once the number of heat sinks at the feeding station reaches the set value;

[0064] S2: The gripping mechanism grips all the heat sinks at the loading station onto the positioning plate located at the pick-and-place station:

[0065] S3: The positioning plate, carrying the heat sink, moves to the coating station;

[0066] S4: The coating mechanism performs coating operations on the upper surface of the radiator;

[0067] S5: After coating is completed, the positioning plate, along with the heat sink, returns to the pick-and-place station;

[0068] S6: The gripping mechanism grips the heat sinks that have been coated at the pick-and-place station to the inspection station, where the coating thickness on each heat sink is inspected by a laser thickness detector.

[0069] If the test result shows that the thickness is qualified, proceed to step S7;

[0070] If the test result shows that the thickness is unqualified, proceed to step S8;

[0071] S7: The gripping mechanism will grab the qualified radiator that has completed the inspection and send it to the off-line station for the next processing step;

[0072] S8: The grabbing mechanism grabs the unqualified heat sink that has completed detection to the temporary storage station for centralized processing.

[0073] Each component in the device is controlled by the controller.

[0074] The device can realize the feeding of heat sinks, the coating of heat dissipation paste, thickness detection, and the rejection of unqualified products, has high automation degree, eliminates the quality risks of missed brushing and uneven brushing thickness caused by manual operation, improves the quality of products, and realizes efficiency control.

[0075] Embodiment 2

[0076] Embodiment 2 provides an implementation scheme for heat sink transportation in the coating process on the basis of embodiment 1.

[0077] As shown in Figure 1 , in this embodiment, a vibration disc 2 and an online conveying belt 3 are sequentially installed at the online station, the discharge end of the vibration disc is communicated with the input end of the online conveying belt, a offline conveying belt 7 is installed between the taking and placing station and the coating station on the rack, and the thickness detection component is a laser thickness detector 39 installed at the output end of the offline conveying belt through a support 40.

[0078] As shown in Figure 2 , in this embodiment, baffle plates A9 are arranged on both sides of the online conveying belt, a temporary storage tank A14 is installed at the output side of the online conveying belt, a pushing block A15 is arranged in the temporary storage tank A, the pushing block A is installed at the end of a pushing cylinder A13, the pushing cylinder A is installed on the rack and arranged along the length direction of the temporary storage tank A, the input end of the temporary storage tank A is communicated with the output end of the online conveying belt, and a photoelectric counting detection switch is installed at the input end of the temporary storage tank A.

[0079] As shown in Figure 6 , in this embodiment, baffle plates B37 are arranged on both sides of the offline conveying belt, a temporary storage tank B36 is installed at the output side of the offline conveying belt, a pushing block B35 is arranged in the temporary storage tank B, the pushing block B is installed at the end of a pushing cylinder B38, the pushing cylinder B is installed on the rack and arranged along the length direction of the temporary storage tank B, the input end of the temporary storage tank B is communicated with the output end of the offline conveying belt, and a photoelectric detection switch is installed at the input end of the temporary storage tank B.

[0080] When the online conveying belt is started, the heat sink in the vibration disc is conveyed to the input end of the online conveying belt one by one, the photoelectric counting detection switch detects that the heat sink is sent to the temporary storage tank A at the output end of the online conveying belt, the controller controls the online conveying belt to stop and count, the pushing cylinder A drives the pushing block A to push the heat sink into the tank for temporary storage, after the pushing cylinder A drives the pushing block A to reset, the controller controls the online conveying belt to start, the next heat sink is input, and the cycle is repeated.

[0081] When the count reaches the set value (e.g. 5), a group is formed, the pushing block A stops pushing, the gripping mechanism clamps the group of radiators to the positioning plate of the taking and placing station, the positioning plate sends the group to the coating station for coating, and then the positioning plate sends the group of coated radiators back to the taking and placing station;

[0082] The gripping mechanism clamps the group of radiators to the input end of the offline conveying belt, when the photoelectric detection switch reaches the temporary storage groove B at the output end of the offline conveying belt, the controller controls the offline conveying belt to stop, and the thickness detection assembly at the output end of the conveying belt detects the coating thickness of the radiators.

[0083] After the detection is completed, the gripping mechanism clamps the radiators at the detection station, and according to the detection structure, the radiators are sent to the temporary storage station or the offline station.

[0084] Embodiment 3:

[0085] As shown in Figures 1-5 , embodiment 3 is based on embodiment 2, and an adjusting structure is provided to realize matched conveying for radiators of different sizes.

[0086] In this embodiment, a width adjusting plate 12 is arranged between the corresponding two baffles on the offline conveying belt and the online conveying belt, the width adjusting plate is slidably connected to one side of the baffle by a moving adjusting member, and a conveying channel is formed between the width adjusting plate and the other baffle.

[0087] The following are two implementation schemes of the moving adjusting member:

[0088] One implementation scheme of the moving adjusting member is:

[0089] As shown in Figure 2 , Figure 6 , the moving adjusting member is a clamping plate 10, the clamping plate is arranged on the baffle, the inner end of the clamping plate is connected to the width adjusting plate, a strip hole 11 perpendicular to the conveying direction is formed in the clamping plate, a fastening screw is arranged in the strip hole, and the fastening screw is threadedly connected to the locking hole in the baffle.

[0090] Another implementation scheme of the moving adjusting member is:

[0091] The moving adjusting member is a guide rod, the guide rod is perpendicular to the conveying direction, the inner end of the guide rod is connected to the width adjusting plate, the outer end of the guide rod penetrates the baffle, and the baffle is provided with a locking pin for locking the guide rod.

[0092] Embodiment 4:

[0093] Embodiment 4 is based on embodiment 1 or embodiment 2, and a specific implementation structure of the gripping mechanism is provided.

[0094] One scheme is:

[0095] The gripping mechanism can be a robotic arm or robot, but this solution is costly and the entire process is complex.

[0096] Another option is:

[0097] like Figure 3 As shown, the gripping mechanism includes a gripping component 41 for picking up and placing, and a gripping component 42 for screening.

[0098] The pick-and-place gripper is installed at the pick-and-place station, including a transverse shift seat 17 and an upper clamping cylinder 19 and a detection clamping cylinder 21 installed thereon. The transverse shift seat is installed on the frame via a transverse shift assembly 16 and is located above the positioning plate.

[0099] The upper clamping cylinder is installed on the moving end of the upper lifting cylinder 18, and the upper lifting cylinder is fixedly installed on the transverse support.

[0100] The lower wire clamping cylinder is installed on the moving end of the lower wire lifting cylinder 20, and the lower wire lifting cylinder is fixedly installed on the transverse support.

[0101] In use, the upper clamping cylinder is used to clamp the radiator at the output end of the upper conveyor belt to the positioning plate, and the lower clamping cylinder is used to clamp the radiator that has been coated on the positioning plate to the input end of the lower conveyor belt. The transverse component drives the upper clamping cylinder to move between the upper conveyor belt and the pick-and-place station, and the transverse component drives the lower clamping cylinder to move between the lower conveyor belt and the pick-and-place station.

[0102] The screening assembly is installed at the testing station and includes a longitudinal moving seat 22, a sorting lifting cylinder 23, and a sorting clamping cylinder 24. The longitudinal moving seat is installed on the frame via the longitudinal moving assembly 25, the sorting lifting cylinder is fixedly installed on the longitudinal moving seat, and the sorting clamping cylinder is installed on the moving end of the sorting lifting cylinder.

[0103] In use, the screening component is used to clamp the heat sink at the output end of the offline conveyor belt to complete the coating thickness detection, and send it to the corresponding temporary storage station or offline station according to the detection structure.

[0104] Example 5:

[0105] like Figure 5 As shown in Example 5, based on the above examples, a specific implementation scheme for a positioning plate is provided.

[0106] In this embodiment, the positioning plate is driven by the longitudinal movement assembly 32 mounted on the frame, and slides with the slide rail 34 on the frame through the slider 33 below it. The positioning plate is provided with an L-shaped positioning baffle 27.

[0107] The opposite sides of the two plate parts of the L-shaped positioning baffle on the positioning plate are respectively provided with a longitudinal moving cylinder 28 and a transverse moving cylinder 29, and the cylinder rods of the longitudinal moving cylinder and the transverse moving cylinder are respectively provided with a longitudinal pushing plate 30 and a transverse pushing plate 31;

[0108] In use, after a group of heat sinks is placed on the positioning plate, the photoelectric detection switch on the positioning plate detects the heat sinks, then the longitudinal moving cylinder and the transverse moving cylinder are simultaneously extended, and the group of heat sinks is positioned by the cooperation of the longitudinal pushing plate, the transverse pushing plate and the L-shaped positioning baffle; then the longitudinal moving assembly sends the positioning plate to a coating station; after coating is completed, the longitudinal moving assembly sends the positioning plate to a taking and placing station, and the longitudinal moving cylinder and the transverse moving cylinder are simultaneously retracted and reset.

[0109] Embodiment 6:

[0110] As shown in the drawings, embodiment 6 gives a specific implementation scheme of a coating mechanism on the basis of the above-mentioned embodiments. Figure 7

[0111] In this embodiment, the coating mechanism comprises a paste barrel 41, a reciprocating scraping coating assembly and a brush paste thickness limiting plate 50.

[0112] The reciprocating scraping coating assembly comprises a base 43 and a transverse moving driving part 44 mounted on the base, the moving end 45 of the transverse moving driving part is provided with a fixing seat 46, the left and right sides of the fixing seat are vertically provided with scraper cylinders 47, the cylinder rods of the scraper cylinders are provided with scrapers 48, the lower end of the fixing seat is provided with side baffles 49 on the front and back sides, and the two ends of the side baffles are respectively connected with the cylinder rods of the scraper cylinders on the two sides.

[0113] The lower side of the fixing seat is provided with a paste outlet, and the paste outlet is connected with the output end of the paste barrel through a pipeline.

[0114] The brush paste thickness limiting plate is horizontally arranged, the left and right ends of the brush paste thickness limiting plate are detachably connected with the side plates 52 through connecting plates 53 through bolts, different brush paste thickness limiting plates can be replaced according to the processing requirements, the side plates are fixedly installed on the base, the coating positioning groove 51 starts at the middle part of the brush paste thickness limiting plate, and the depth of the coating positioning groove is equal to the thickness of the heat sink paste layer to be coated so as to realize thickness limiting.

[0115] The number of the coating positioning grooves corresponds to the number of the heat sinks on the positioning plate, and after the positioning plate sends the heat sinks to the coating station, the coating positioning groove covers the part to be coated on the upper end of the heat sink at the corresponding position.

[0116] The base is installed on the moving end of the lifting assembly, and the paste barrel and the lifting assembly are fixedly installed on the rack.

[0117] ​When in use, the positioning plate sends the heat sink to the coating station, the lifting assembly drives the brush paste thickness limiting plate to press against the upper end of the heat sink, and the coating positioning groove covers the part to be coated on the upper end of the heat sink in the corresponding position; then, the scraper cylinder drives the scraper to move downward, so that the lower end of the scraper contacts the brush paste thickness limiting plate; then, the upper part of the paste barrel is aerated to be extruded, so that the heat sink paste is output from the paste outlet, and the horizontal movement driving member drives the fixed seat to move horizontally and reciprocally, so that the heat sink paste is scraped and coated in the coating positioning groove, and the brush paste operation of the heat sink is completed; then, the scraper cylinder drives the scraper to move upward and reset, and the lifting assembly drives the brush paste thickness limiting plate to move upward and reset, and the positioning plate sends the heat sink to the taking and placing station.

[0118] In the embodiment, at least one paste barrel is provided, and the output end of each paste barrel is connected to each input port of a multi-way valve through a pipeline, and the output port of the multi-way valve is connected to the paste outlet through a pipeline.

[0119] Embodiment 7:

[0120] Embodiment 7 gives a specific implementation of the moving member in the above embodiments.

[0121] In the embodiment, the forms that can be adopted by the horizontal movement assembly, the vertical movement assembly, the horizontal movement driving member and the lifting assembly include but are not limited to electric cylinders, air cylinders, hydraulic cylinders or linear modules.

[0122] In the embodiment, whether each moving member is in place is detected by an infrared sensor or a photoelectric sensor arranged at the corresponding position.

[0123] The relative arrangement, numerical expressions and values of the components and steps set forth in the embodiments do not limit the scope of the present application unless otherwise specified. In all the examples shown and discussed herein, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items, and therefore, once an item is defined, it need not be further discussed in the subsequent.

[0124] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship, which is generally based on the shown orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0125] For ease of description, spatial relative terms, such as "above", "upper", "top", "bottom", and "lower" can be used herein for ease of description to describe the positional relationship of a feature. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described.

[0126] In addition, it should be noted that the use of "first", "second", and the like words to define parts only facilitates the distinction of the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0127] If the present application discloses or involves parts or structural members fixedly connected to each other, unless otherwise stated, the fixed connection can be understood as: detachable fixed connection (for example, connected by bolts or screws), or as: non-detachable fixed connection (for example, riveting, welding), of course, the fixed connection can also be replaced by an integral structure (for example, manufactured by casting process) (obviously, except for the integral forming process).

[0128] The above preferred embodiments further illustrate the purpose, technical solutions and advantages of the present application. It should be understood that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A heat sink thermal paste application and sorting apparatus comprising a frame and an application mechanism, characterized in that: The coating mechanism is provided with a grabbing mechanism and a thickness detection assembly beside it; The rack is provided with an upper line station, a taking and placing station, a coating station, a detection station, a temporary storage station and a lower line station in sequence beside the grabbing mechanism; The coating mechanism is installed at the coating station, and a positioning plate is movably arranged below the coating mechanism on the rack, one limit position of the positioning plate is located at the coating station, and the other limit position is located at the taking and placing station; The thickness detection assembly is installed at the detection station; The upper line station and the taking and placing station are connected through the grabbing mechanism to transport the heat sink, the taking and placing station and the detection station are connected through the grabbing mechanism to transport the heat sink, and the detection station is connected through the grabbing mechanism to transport the heat sink between the temporary storage station or the lower line station; The coating mechanism comprises a paste barrel, a reciprocating scraping assembly and a paste brushing thickness limiting plate; The reciprocating scraping assembly comprises a base and a transverse movement driving element installed on the base, a fixing seat is installed at the moving end of the transverse movement driving element, a scraping knife cylinder is vertically installed at the left and right sides of the fixing seat, a scraping knife is installed at the end of the cylinder rod of the scraping knife cylinder, side baffles are arranged at the front and rear sides of the lower end of the fixing seat, and the ends of the side baffles are connected with the ends of the cylinder rods of the scraping knife cylinders; An outlet is installed on the lower side of the fixing seat, and the outlet is connected with the output end of the paste barrel through a pipeline; The paste brushing thickness limiting plate is horizontally arranged, the left and right ends of the paste brushing thickness limiting plate are detachably connected with the side plates through connecting plates, the side plates are fixedly installed on the base, a coating positioning groove is arranged at the middle part of the paste brushing thickness limiting plate, the depth of the coating positioning groove is equal to the thickness of the heat sink paste layer to be coated, and the number of the coating positioning grooves corresponds to the number of the heat sinks. The base is installed at the moving end of the lifting assembly, and the paste barrel and the lifting assembly are fixedly installed on the rack.

2. The heat sink thermal paste application and sorting apparatus of claim 1, wherein: A vibrating disc and an upper line conveying belt are installed in sequence at the upper line station, the output end of the vibrating disc is communicated with the input end of the upper line conveying belt, and a lower line conveying belt is installed between the taking and placing station and the coating station on the rack.

3. The heat sink thermal paste application and sorting apparatus of claim 2, wherein: The grabbing mechanism is a mechanical hand; Alternatively, the grabbing mechanism comprises a taking and placing grabbing element and a screening grabbing element. The taking and placing grabbing element is installed at the taking and placing station and comprises a transverse seat, an upper line clamping cylinder and a detection clamping cylinder installed on the transverse seat, the transverse seat is installed on the rack through a transverse movement assembly and located above the positioning plate; The upper line clamping cylinder is installed at the moving end of an upper line lifting cylinder, and the upper line lifting cylinder is fixedly installed on the transverse seat; A lower line lifting cylinder is fixedly installed on the transverse seat, and a lower line clamping cylinder is installed at the moving end of the lower line lifting cylinder. The screening grabbing element is installed at the detection station and comprises a longitudinal seat, a sorting lifting cylinder and a sorting clamping cylinder, the longitudinal seat is installed on the rack through a longitudinal movement assembly, the sorting lifting cylinder is fixedly installed on the longitudinal seat, and the sorting clamping cylinder is installed at the moving end of the sorting lifting cylinder.

4. The heat sink thermal paste application and sorting apparatus of claim 3, wherein: The positioning plate is driven to slide with the rack through a longitudinal movement assembly installed on the rack, and an L-shaped positioning baffle is arranged on the positioning plate; A longitudinal cylinder and a transverse cylinder are installed on the opposite sides of the two plate parts of the L-shaped positioning baffle on the positioning plate, and the ends of the cylinder rods of the longitudinal cylinder and the transverse cylinder are respectively provided with a longitudinal push plate and a transverse push plate.

5. The heat sink thermal paste application and sorting apparatus of claim 3, wherein: The upper line conveying belt is provided with baffle A on both sides, and a temporary storage groove A is installed on the output side of the upper line conveying belt, a pushing block A is arranged in the temporary storage groove A, the pushing block A is installed at the end of a pushing cylinder A, the pushing cylinder A is installed on the rack and arranged along the length direction of the temporary storage groove A, the input end of the temporary storage groove A is communicated with the output end of the upper line conveying belt, and a photoelectric counting detection switch is installed on the input end of the temporary storage groove A.

6. The heat sink thermal paste application and sorting apparatus of claim 5, wherein: The lower line conveying belt is provided with baffle B on both sides, and a temporary storage groove B is installed on the output side of the lower line conveying belt, a pushing block B is arranged in the temporary storage groove B, the pushing block B is installed at the end of a pushing cylinder B, the pushing cylinder B is installed on the rack and arranged along the length direction of the temporary storage groove B, the input end of the temporary storage groove B is communicated with the output end of the lower line conveying belt, and a photoelectric detection switch is installed on the input end of the temporary storage groove B.

7. The heat sink thermal paste application and sorting apparatus of claim 6, wherein: Width adjusting plates are arranged between the corresponding two baffles on the lower line conveying belt and the upper line conveying belt, the width adjusting plate is slidably connected with one side of the baffle through a moving adjusting piece, and a conveying channel is formed between the width adjusting plate and the other side of the baffle. The moving adjusting piece is a clamping plate, the clamping plate is arranged on the baffle, the inner end of the clamping plate is connected with the width adjusting plate, a strip hole perpendicular to the conveying direction is formed in the clamping plate, a fastening screw is arranged in the strip hole, and the fastening screw is threadedly connected with the locking hole in the baffle. The moving adjusting piece is a guide rod, the guide rod is perpendicular to the conveying direction, the inner end of the guide rod is connected with the width adjusting plate, and the outer end of the guide rod penetrates through the baffle and is locked by a locking pin arranged on the baffle.

8. The heat sink thermal paste application and sorting apparatus of claim 3, wherein: The thickness detection assembly is a laser thickness detector installed on the output end of the lower line conveying belt.

9. A method of coating and sorting using the heat spreader thermal paste coating and sorting apparatus of any one of claims 1-8, wherein, The method comprises the following steps: S1: the feeding assembly feeds the heat sinks to the feeding station one by one, and when the number of heat sinks at the feeding station reaches a set value; S2: the grabbing mechanism grabs all the heat sinks at the feeding station to the positioning plate at the taking and placing station; S3: the positioning plate with the heat sinks moves to the coating station; S4: the coating mechanism performs coating operation on the upper end surface of the heat sink; S5: after the coating is completed, the positioning plate with the heat sinks returns to the taking and placing station; S6: the grabbing mechanism grabs the coated heat sinks at the taking and placing station to the detection station, and the laser thickness detector detects the thickness of the coating on the heat sinks one by one; If the detection result is that the thickness is qualified, step S7 is entered; If the detection result is that the thickness is unqualified, step S8 is entered; S7: the grabbing mechanism grabs the qualified heat sinks after detection to the lower line station and outputs to the next processing procedure; S8: the grabbing mechanism grabs the unqualified heat sinks after detection to the temporary storage station for centralized processing.

Images