Pre-cooling device and testing and sorting equipment

Abstract

The utility model relates to a precooling device and test sorting equipment, comprising a main body which is provided with a precooling cavity for placing a to-be-tested piece and an opening which is arranged at one end of the precooling cavity along a first direction and is used for taking and placing the to-be-tested piece; the two opening and closing doors are mounted on the main body and arranged in the second direction to be matched with opening and closing of the opening; the two driving assemblies are arranged at the same end of the main body in the third direction; the driving assembly comprises a motor, a synchronous belt and two belt wheels arranged in the second direction, the motor is connected with the belt wheels, and the synchronous belt is arranged outside the two belt wheels in a sleeving mode; the two synchronous belts are arranged in parallel, and the opening and closing doors are connected with the synchronous belts in a one-to-one correspondence mode. The guide part extends in the second direction, the guide part and the driving assembly are located at the same end of the main body and arranged on the side wall of the main body, and the two opening and closing doors are slidably connected with the guide part; the first direction, the second direction and the third direction intersect pairwise.

Description

Technical Field

[0001] The utility model relates to the technical field of pre-temperature, in particular to a pre-cooling device and testing and sorting equipment. Background Art

[0002] With the continuous development of science and technology, the application of electronic components (such as IC) is becoming more and more extensive. Before leaving the factory, electronic components need to undergo performance testing to ensure that their quality meets the requirements. Before placing electronic components in the test device of the test sorting equipment for low-temperature testing, they are often placed in the precooling chamber of the precooling device for precooling, so that the electronic components can be transferred to the test device for testing when they have a certain temperature (such as reaching the set temperature), thereby avoiding temporary cooling in the test device and wasting more time, so as to improve the test efficiency.

[0003] In order to reduce the influence of external airflow on the dew point in the pre-heating chamber, the pre-cooling device includes an opening and closing door, which is arranged at the opening connecting the pre-cooling device and its pre-heating chamber. When placing electronic components in the pre-heating chamber or taking out electronic components from the pre-heating chamber, the opening and closing door opens to a certain degree; after the electronic components are taken out and placed, the opening and closing door closes.

[0004] However, in the conventional technology, the pre-cooling device is not set up reasonably, such as the unreasonable arrangement of the drive assembly or the unreasonable arrangement of other structures that cooperate with the drive assembly, resulting in the pre-cooling device occupying a large space. Since many types of testing and sorting equipment have limited space, the space for assembling the pre-cooling device is limited, and the pre-cooling device that occupies a large space is difficult to assemble. Utility Model Content

[0005] Based on this, it is necessary to provide a precooling device and testing and sorting equipment with a smaller footprint to address the problem that traditional precooling devices occupy a large amount of space.

[0006] A precooling device, used for precooling a test piece, comprising:

[0007] A main body, comprising a precooling cavity for placing the test piece and an opening provided at one end of the precooling cavity along a first direction for taking and placing the test piece;

[0008] Two opening and closing doors, mounted on the main body and arranged along the second direction to cooperate with opening and closing the opening;

[0009] Two driving components are arranged at the same end of the main body in the third direction; the driving component includes a motor, a synchronous belt and two pulleys arranged along the second direction, the motor is connected to the pulleys, and the synchronous belt is sleeved outside the two pulleys; the two synchronous belts are arranged in parallel, and the opening and closing doors are connected to the synchronous belts one by one;

[0010] A guide portion extending along the second direction, located at the same end of the main body as the driving assembly and arranged on a side wall of the main body, and both of the opening and closing doors are slidably connected to the guide portion;

[0011] The first direction, the second direction and the third direction intersect each other.

[0012] In one embodiment, each of the opening and closing doors comprises a connecting plate and at least two cover plates, one of the cover plates is fixedly connected to the main body to form a first cover plate, and the remaining cover plates are sequentially stacked on the first cover plate in the first direction and slidably connected to the main body in the second direction; the cover plate of each opening and closing door that is farthest from the first cover plate in the first direction is the second cover plate, and the connecting plate is connected to the second cover plate; the opening and closing door is connected to the guide portion and the corresponding synchronous belt through the connecting plate;

[0013] The connecting plate can drive the second cover plate to move, so that the cover plates slide relative to each other, thereby making the opening and closing door unfold or fold. The second cover plate is used to open and close the opening.

[0014] In one embodiment, the connecting plate is a long strip structure extending along the third direction;

[0015] When the two opening and closing doors close the opening, the connecting plates of the two opening and closing doors abut against each other.

[0016] In one embodiment, each of the opening and closing doors further comprises a positioning member, wherein the positioning member comprises a first positioning portion and a second positioning portion that cooperate with each other, wherein the first positioning portion is disposed on the second cover plate, and the second positioning portion is disposed on the connecting plate;

[0017] The first positioning portion cooperates with the second positioning portion to limit the connection plate and the second cover plate in the second direction, and allows the connection plate and the second cover plate to float in the first direction and / or the third direction.

[0018] In one embodiment, the guide portion is a guide rail extending along the second direction, and the guide rail is connected to the side wall of the main body.

[0019] In one of the embodiments, the precooling device further comprises an air blowing block, which is disposed on the main body and is configured to allow dry gas to pass through and blow toward a side of the opening and closing door facing away from the precooling chamber.

[0020] In one of the embodiments, the precooling device further comprises an air blowing plate, and the air blowing plate is arranged on the main body;

[0021] The precooling device comprises at least two of the air blowing blocks, all of which are spaced apart on the air blowing plate along the second direction, and the air blowing plate is configured to allow the air blowing blocks to communicate with an air source.

[0022] In one of the embodiments, the pre-cooling device further includes a heating element, and the heating element is disposed on the main body to heat the main body.

[0023] In one embodiment, the precooling device further comprises at least two sensors, all of which are arranged on the main body;

[0024] The sensor is used to detect the positions of the two opening and closing doors to control the size of the opening opened by the opening and closing doors.

[0025] A testing and sorting device comprises a loading device, a testing device, a receiving device, a conveying device and a precooling device as described in any one of the above items; the conveying device is used to convey the test pieces provided by the loading device to the precooling device for precooling, and to convey the test pieces precooled by the precooling device to the testing device, and to convey the test pieces tested by the testing device to the receiving device for receiving.

[0026] In the above-mentioned precooling device and testing and sorting equipment, the two drive components are both arranged at the same end of the main body in the third direction, and the two drive components both include a motor, a pulley and a synchronous belt, the two pulleys of each drive component extend along the second direction, and the synchronous belts of the two drive components are arranged in parallel, so that the two drive components are arranged in a regular manner, reducing the space occupied by the precooling device. At the same time, the guide part and the two drive components are located at the same end of the main body in the third direction, and are arranged on the side wall of the main body, so that the setting of the guide part plays the role of guiding the opening and closing of the door without causing too much increase in the space occupied by the precooling device in the third direction, meeting the requirement of small space occupied by the precooling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 An axonometric diagram of a precooling device provided in one embodiment of the present application;

[0028] Figure 2 for Figure 1 An axonometric view of another perspective of the precooling device shown in ;

[0029] Figure 3 for Figure 1 An axonometric view of another perspective of the precooling device shown in ;

[0030] Figure 4 for Figure 1 An axonometric view of the precooling device shown in another perspective;

[0031] Figure 5 for Figure 4 An enlarged view of point A of the precooling device shown in FIG.

[0032] Description of reference numerals:

[0033] 100. precooling device; 10. main body; 11. precooling chamber; 12. opening; 13. first slide groove; 14. first end face; 15. second end face; 20. opening and closing door; 21. connecting plate; 22. cover plate; 221. first cover plate; 222. second cover plate; 23. positioning member; 231. first positioning part; 232. second positioning part; 30. driving assembly; 31. motor; 32. synchronous belt; 33. pulley; 40. guide part; 50. sensor; 60. connecting block; 70. slider; 80. blowing block; 90. blowing plate; 110. heating element; 120. joint. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element 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 invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying 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 features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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 the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] See also Figure 1 and Figure 2 In one embodiment of the present application, a precooling device 100 is provided for precooling a device to be tested so that the temperature of the device to be tested reaches a set temperature. When the temperature of the device to be tested reaches the set temperature, it is transferred to a testing device for testing. In some specific embodiments, the device to be tested is a chip. It is understood that in other specific embodiments, the type of the device to be tested is not limited, such as the device to be tested can also be other types of electronic components.

[0041] The preheating device includes a main body 10, a precooling chamber 11 is provided in the main body 10, and an opening 12 connected to the precooling chamber 11 is provided on the main body 10. Specifically, the opening 12 is located at one end of the precooling chamber 11 in the first direction. That is, the opening 12 is opened on the end surface of one end of the main body 10 in the first direction and is connected to the precooling chamber 11. The precooling chamber 11 is used to place the test piece, and the opening 12 can be used for placing the test piece in the precooling chamber 11 or for taking the test piece out of the precooling chamber 11. Since the temperature in the precooling chamber 11 is relatively low, when the test piece is placed in the precooling chamber 11 for a preset period of time, the temperature of the test piece can reach the set temperature.

[0042] The precooling device 100 also includes two opening and closing doors 20, which are installed at the opening 12 of the main body 10 and arranged along the second direction. The two opening and closing doors 20 cooperate to open and close the opening 12. In some specific embodiments, when at least one of the two opening and closing doors 20 moves away from the other in the second direction, the two opening and closing doors 20 cooperate to open the opening 12; when at least one of the two opening and closing doors 20 moves toward the other in the second direction, the two opening and closing doors 20 cooperate to close the opening 12. When it is necessary to place the test piece in the precooling chamber 11 or to take the test piece out of the precooling chamber 11, the two opening and closing doors 20 cooperate to open the opening 12, and the external manipulator places the test piece in the precooling chamber 11 through the opening 12 or takes the test piece out of the precooling chamber 11 through the opening 12. When the test piece is placed and taken, the two opening and closing doors 20 cooperate to close the opening 12 to prevent the influence of external airflow on the dew point in the precooling chamber 11, thereby ensuring the precooling effect of the precooling device 100 on the test piece.

[0043] Optionally, when the opening and closing door 20 opens the opening 12, in order to maintain the stability of the dew point in the pre-cooling chamber 11, a protective cover is often provided on the external manipulator. When the manipulator takes and places the test piece, the protective cover covers the open part of the opening 12 to reduce the influence of the external airflow on the dew point in the pre-cooling chamber 11, thereby further ensuring the effect of the pre-cooling device 100 in pre-cooling the test piece.

[0044] Furthermore, the precooling device 100 further includes two drive assemblies 30, and the two drive assemblies 30 are disposed at the same end of the main body 10 in the third direction. Figure 1 and Figure 2, the main body 10 has a first end and a second end in the third direction, the first end has a first end surface 14, the second end has a second end surface 15, and the first end surface 14 and the second end surface 15 are arranged opposite to each other in the third direction. In some embodiments, the two drive components 30 are opposite to the first end surface 14, specifically, the two drive components 30 are spaced apart from the first end surface 14 or are directly installed on the first end surface 14. In other embodiments, the two drive components 30 are opposite to the second end surface 15, specifically, the two drive components 30 are spaced apart from the second end surface 15 or are directly installed on the second end surface 15. The first direction, the second direction and the third direction intersect with each other. Specifically, the first direction, the second direction and the third direction are perpendicular to each other. As Figure 2 As shown, the first direction is Figure 2 The middle Z direction, the second direction is Figure 2 The middle X direction, the third direction is Figure 2 Center Y direction.

[0045] Continue reading Figure 1 , each driving assembly 30 includes a motor 31, a synchronous belt 32 and two pulleys 33 arranged at intervals along the second direction. The motor 31 is connected to one of the pulleys 33, and the synchronous belt 32 is sleeved outside the two pulleys 33. The opening and closing door 20 is connected to the synchronous belt 32 of its corresponding driving assembly 30. The synchronous belts 32 of the two driving assemblies 30 are arranged in parallel, that is, the two synchronous belts 32 extend along the second direction and are arranged in parallel. The motor 31 is actuated to drive the pulley 33 connected thereto to rotate, thereby driving the synchronous belt 32 to move. When the synchronous belt 32 moves, it drives the opening and closing door 20 connected thereto to move. In this way, under the cooperation of the two driving assemblies 30, the opening 12 can be closed or closed. At the same time, under the cooperation of the two driving assemblies 30, the opening size of the opening 12 can also be controlled.

[0046] Continue reading Figure 1 and Figure 2The precooling device 100 further includes a guide portion 40, which extends along the second direction, is located at the same end of the main body 10 as the drive assembly 30 in the third direction, and is disposed on the side wall of the main body 10. It should be noted that the wall of the main body 10 having the opening 12 is the top wall, the wall opposite to the opening 12 is the bottom wall, and the parts connected between the top wall and the bottom wall are all the side walls of the main body 10. In some specific embodiments, when the drive assembly 30 is spaced apart from the first end face 14, the guide portion 40 is disposed on the side wall of the main body 10 having the first end face 14, specifically, the guide portion 40 is located on the side of the side wall of the first end close to the two drive assemblies 30, that is, the guide portion 40 is directly mounted on the first end face 14. In some other specific embodiments, when the driving assembly 30 is spaced apart from the second end surface 15, the guide portion 40 is disposed on the side wall of the main body 10 having the second end surface 15. Specifically, the guide portion 40 is located on the side of the side wall of the second end close to the two driving assemblies 30, that is, the guide portion 40 is installed on the second end surface 15. The two opening and closing doors 20 are both slidably connected to the guide portion 40, that is, when the opening and closing doors 20 move along the second direction, the guide portion 40 plays a role in guiding the opening and closing doors 20 along the second direction.

[0047] It should be noted that there is no limitation on the size of the first end and the second end of the body 10. In some specific embodiments, the lengths of the first end and the second end in the third direction are equal. In other specific embodiments, the length of the first end in the third direction is greater than the length of the second end in the third direction, or the length of the first end in the third direction is less than the length of the second end in the third direction.

[0048] In the precooling device 100 provided in the embodiment of the present application, the two drive assemblies 30 are both arranged at the same end of the main body 10 in the third direction, and the two drive assemblies 30 both include a motor 31, a pulley 33 and a synchronous belt 32. The two pulleys 33 of each drive assembly 30 extend along the second direction, and the synchronous belts 32 of the two drive assemblies 30 are arranged in parallel. In this way, the two drive assemblies 30 are arranged in a regular manner, which reduces the floor space of the precooling device 100. At the same time, the guide part 40 and the two drive assemblies 30 are located at the same end of the main body 10 in the third direction, and are arranged on the side wall of the main body 10. In this way, the setting of the guide part 40 plays a role in guiding the opening and closing door 20 without causing too much increase in the floor space of the precooling device 100 in the third direction, thereby meeting the requirement of the precooling device 100 occupying a small floor space.

[0049] It should be noted that the drive assembly 30 in the present application includes a motor 31, which has a faster response speed than the cylinder and has no stroke limit. When the opening 12 is opened, the opening of the opening 12 can be minimized to ensure the stability of the dew point in the pre-cooling chamber 11. At the same time, the dual motors 31 control the opening and closing of the door 20, which can make the speed of the door 20 more stable and uniform, and less likely to cause collisions.

[0050] In some embodiments, the main body 10 is a hollow rectangular parallelepiped structure, the first direction is the height direction of the main body 10, the opening 12 is provided at the top of the main body 10, the second direction is the length direction of the main body 10, and the third direction is the width direction of the main body 10. It is conceivable that in other embodiments, the shape of the main body 10 is not limited, such as the main body 10 can also be a hollow cylindrical structure or other irregular structures.

[0051] Each opening and closing door 20 includes a connecting plate 21 and at least two cover plates 22, one cover plate 22 is fixedly connected to the main body 10 to form a first cover plate 221, and the remaining cover plates 22 are sequentially stacked on the first cover plate 221 in the first direction and are slidably connected to the main body 10. Figure 3 , both side walls of the main body 10 in the third direction have a first slide groove 13 extending in the second direction, and the two ends of the cover plate 22 slidably connected to the main body 10 are respectively accommodated in the first slide groove 13 to be slidably connected to the main body 10. At the same time, the two adjacent cover plates 22 are slidably connected, and the cover plate 22 farthest from the first cover plate 221 of each opening and closing door 20 in the first direction is the second cover plate 222, and the connecting plate 21 is connected to the second cover plate 222. The opening and closing door 20 is connected to the guide part 40 and its corresponding synchronous belt 32 through the connecting plate 21. The connecting plate 21 can drive the second cover plate 222 to move, so that the cover plates 22 slide relative to each other, thereby allowing the opening and closing door 20 to unfold or fold.

[0052] With the above arrangement, when the synchronous belt 32 drives the connecting plate 21 to move, the connecting plate 21 can drive the second cover plate 222 to move, so that each cover plate 22 can be unfolded or folded, and the second cover plate 222 is used to open and close the opening 12. In this way, the two opening and closing doors 20 can cooperate to open and close the opening 12 according to different stations of the precooling device 100, so that the opening 12 can be taken in and put in different stations when the opening 12 is opened to a smaller opening. When the opening 12 is opened at one station, the part of the opening 12 located at other stations is shielded by the cover plate 22, which ensures the stability of the dew point in the precooling chamber 11.

[0053] It should be noted that a jig (kit) is provided in the precooling chamber 11, and the above-mentioned workstations are distributed on the kit in sequence in the second direction, and the test piece can be placed on different workstations of the kit for testing. It should also be noted that since the second cover plates 222 of the two opening and closing doors 20 are actually used to realize the function of opening and closing the opening 12, when it is necessary to open and close the opening 12 at different workstations, the second cover plates 222 of the two opening and closing doors 20 are controlled to move to different workstations, and after the second cover plates 222 are moved to different workstations, the opening can be opened and closed at the workstation. When the second cover plates 222 are moved between different workstations, the two second cover plates 222 of the two opening and closing doors 20 are controlled to be in a closed state at all times to reduce the influence of external airflow on the dew point in the precooling chamber 11.

[0054] In a specific embodiment, each opening and closing door 20 includes 7 cover plates 22, one of the 7 cover plates 22 is a first cover plate 221, and the remaining cover plates 22 can slide relative to the main body 10 in the second direction. When the size of each station in the second direction is equal to the size of the two cover plates 22 in the second direction, the cooperation of the two opening and closing doors 20 can realize the opening and closing of the opening 12 at 6 different stations. It should be noted that the relationship between the size of each station in the second direction and the size of the cover plate 22 in the second direction is not limited. When each opening and closing door 20 is provided with 7 cover plates 22, it can also correspond to the opening and closing of the opening 12 at more than 6 stations or less than 6 stations.

[0055] It is understandable that in other embodiments, the opening and closing door 20 may also be arranged in other ways, such as arranging each opening and closing door 20 to include only one cover plate 22 , and the two cover plates 22 cooperate to open and close the opening 12 .

[0056] Furthermore, the connecting plate 21 is a long strip structure extending along the third direction, and the cover plate 22 is a plate structure. When the two opening and closing doors 20 close the opening 12, the connecting plates 21 of the two opening and closing doors 20 abut against each other. That is, at this time, the connecting plate 21 is connected to the end of the second cover plate 222 close to the other opening and closing door 20 in the second direction. Compared with the case where the connecting plate 21 is connected to the end of the second cover plate 222 far from the other opening and closing door 20 in the second direction, when the travel of the connecting plate 21 in the second direction is limited, the opening 12 has a sufficient opening to facilitate the removal of the kit in the pre-cooling chamber 11. When the test piece in the pre-cooling chamber 11 is completely removed, a new kit can be replaced.

[0057] In some embodiments, the precooling device 100 further includes at least two sensors 50, all of which are disposed on the main body 10. The sensors 50 are used to detect the positions of the two opening and closing doors 20, so as to control the size of the opening 12 opened by the opening and closing doors 20, and ensure the opening accuracy. Specifically, when the sensor 50 detects the connecting plate 21, it is determined that the connecting plate 21 has moved into place, and when the sensor 50 does not detect the connecting plate 21, it is determined that the connecting plate 21 has not moved into place. In this way, the size of the opening 12 opened by the two opening and closing doors 20 is controlled by determining the positions of the two connecting plates 21.

[0058] It should be noted that the number of sensors 50 is set according to the working conditions. For example, the number of sensors 50 is set according to the number of workstations, such as two sensors 50 are set for one workstation, or three sensors 50 are set for one workstation. Of course, in some other embodiments, the number of sensors 50 can also be set according to other methods, which are not limited here, as long as the purpose of controlling the size of the opening 12 of the opening and closing door 20 can be achieved.

[0059] In some embodiments, the driving assembly 30 is located on the same side of the connecting plate 21 as the main body 10 in the first direction, so as to reduce the footprint of the precooling device 100 in the first direction. The opening and closing door 20 further includes a connecting block 60, which is disposed on the side of the connecting plate 21 facing the synchronous belt 32, and the connecting plate 21 is connected to the synchronous belt 32 through the connecting block 60. It is understandable that in some other embodiments, the opening and closing door 20 may also omit the connecting block 60, in which case the connecting plate 21 is directly connected to the synchronous belt 32.

[0060] In some embodiments, see Figure 1 , the guide portion 40 is a guide rail extending in the second direction, and the guide portion 40 is located on the same side of the connecting plate 21 as the driving assembly 30 in the first direction. The precooling device 100 further includes a slider 70, which is disposed on the side of the connecting plate 21 facing the guide portion 40, and the slider 70 is connected to the connecting plate 21 and has a second slide groove, and the slider 70 cooperates with the guide rail through the second slide groove. In this way, the connecting plate 21 is slidably connected to the guide rail in the second direction through the slider 70.

[0061] In some other embodiments, the guide portion 40 may be provided as a guide groove provided on the main body 10. The precooling device 100 further includes a slider 70, which is connected to a side of the connecting plate 21 facing the guide groove, and the slider 70 is slidably disposed in the guide groove. Thus, the connecting plate 21 is also slidably connected to the guide groove in the second direction through the slider 70.

[0062] It is conceivable that in some other embodiments, the precooling device 100 may also omit the slider 70 , and in this case the connecting plate 21 is directly slidably connected to the guide portion 40 .

[0063] In some embodiments, see Figure 4 and Figure 5 Each opening and closing door 20 further includes a positioning member 23, and the positioning member 23 includes a first positioning portion 231 and a second positioning portion 232 that cooperate with each other. The first positioning portion 231 is arranged on the second cover plate 222, and the second positioning portion 232 is arranged on the connecting plate 21. The first positioning portion 231 and the second positioning portion 232 cooperate to limit the connecting plate 21 and the second cover plate 222 in the second direction, and allow the connecting plate 21 and the second cover plate 222 to float in the first direction and / or the third direction. Since the first positioning portion 231 and the second positioning portion 232 can limit the connecting plate 21 and the second cover plate 222 in the second direction, when the synchronous belt 32 drives the connecting plate 21 to move in the second direction, the connecting plate 21 can drive the second cover plate 222 to move in the second direction, thereby opening and closing the opening 12. At the same time, the first positioning portion 231 and the second positioning portion 232 allow the connecting plate 21 and the second cover plate 222 to float in the first direction or the third direction, which can solve the parallelism problem between the opening and closing door 20 and the guide portion 40 and avoid the opening and closing door 20 from getting stuck during the opening and closing process.

[0064] In some specific implementations, one of the first positioning portion 231 and the second positioning portion 232 is a pin, and the other is a long hole extending along the third direction, and the pin passes through the long hole along the first direction.

[0065] Specifically, each opening and closing door 20 includes at least two positioning members 23 spaced apart along the third direction, and the positioning effect and the floating effect are ensured under the cooperation of at least two positioning members 23. Of course, in some other embodiments, each opening and closing door 20 may also include at least one positioning member 23, which is not limited here.

[0066] In some embodiments, see Figure 1-Figure 4 The precooling device 100 further includes a blowing block 80, which is disposed on the main body 10. The blowing block 80 is configured to allow the dry gas to flow through and blow toward the side of the opening and closing door 20 that faces away from the precooling chamber 11. That is, the blowing block 80 can blow the dry gas toward the outside of the precooling chamber 11. In this way, by blowing the dry gas toward the opening and closing door 20 through the blowing block 80, frost and condensation on the cover plate 22 can be avoided.

[0067] Further, the precooling device 100 also includes a blowing plate 90, and the blowing plate 90 is arranged on the main body 10. The precooling device 100 includes at least two blowing blocks 80, all of which are arranged on the blowing plate 90 at intervals along the second direction, and the blowing plate 90 is configured to connect the blowing block 80 with the gas source. That is, the dry gas provided by the gas source first enters the blowing plate 90, then enters the blowing block 80 from the blowing plate 90, and finally blows toward the cover plate 22 by the blowing block 80. In this way, it is only necessary to set a joint 120 between the blowing plate 90 and the gas source, avoiding the need for a joint 120 to be set between each blowing block 80 and the gas source, so that the gas circuit connection is simple.

[0068] Specifically, the blowing plate 90 is located at an end of the main body 10 away from the driving assembly 30 in the third direction, and is installed on the end surface of the main body 10 having the opening 12 in the first direction, so that the precooling device 100 has a compact and reasonable layout.

[0069] In some embodiments, see Figure 1 and Figure 4 The precooling device 100 further includes a heating element 110, which is disposed on the main body 10 to heat the main body 10. In this way, frost and condensation on the main body 10 can be avoided.

[0070] In some specific implementations, the heating element 110 is a heating rod disposed on the side wall of the main body 10. It is conceivable that in other embodiments, the arrangement of the heating element 110 is not limited, as long as the effect of heating the main body 10 can be achieved.

[0071] Another embodiment of the present application further provides a test sorting device, comprising a loading device, a testing device, a receiving device, a conveying device and the above-mentioned precooling device 100. The conveying device is used to convey the test pieces provided by the loading device to the precooling device for precooling, and to convey the test pieces precooled by the precooling device to the testing device, and to convey the test pieces tested by the testing device to the receiving device for receiving.

[0072] The precooling device 100 and the testing and sorting equipment provided in the embodiment of the present application have at least the following beneficial effects:

[0073] 1. Both driving components 30 include a motor 31, that is, in the present application, dual motors 31 are used to drive the two opening and closing doors 20 to move respectively. Compared with the situation where the opening and closing doors 20 are driven by cylinders, the structure is simple and the response speed is fast.

[0074] 2. The two drive assemblies 30 are both located at the same end of the main body 10 in the third direction, and the synchronous belts 32 of the two drive assemblies 30 are arranged in parallel. At the same time, the guide part 40 for guiding the two opening and closing doors 20 in the second direction is located at the same end of the main body 10 as the two drive assemblies 30 in the third direction, and is arranged on the side wall of the main body 10. In this way, the layout of the precooling device 100 is reasonable and the structure is compact, which reduces the floor space of the precooling device 100 and facilitates the assembly of the precooling device 100 on the test and sorting equipment with limited space.

[0075] 3. The sensor 50 can detect the position of the opening and closing door 20 so as to control the size of the opening 12 of the opening and closing door 20 and ensure the opening accuracy.

[0076] 4. The air blowing block 80 can blow dry air onto the cover plate 22 to prevent frost from forming on the cover plate 22. The heating element 110 can heat the main body 10 to prevent frost from forming on the main body 10.

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A precooling device for precooling a test piece, characterized in that: include: A main body (10) having a precooling chamber (11) for placing the test piece and an opening (12) provided at one end of the precooling chamber (11) along a first direction for taking in and placing the test piece; Two opening and closing doors (20) are installed on the main body (10) and arranged along the second direction to cooperate with opening and closing the opening (12); Two driving components (30) are arranged at the same end of the main body (10) in the third direction; the driving component (30) comprises a motor (31), a synchronous belt (32) and two pulleys (33) arranged along the second direction, the motor (31) is connected to the pulleys (33), and the synchronous belt (32) is sleeved outside the two pulleys (33); the two synchronous belts (32) are arranged in parallel, and the opening and closing doors (20) are connected to the synchronous belts (32) in a one-to-one correspondence; a guide portion (40) extending along the second direction, located at the same end of the main body (10) as the driving assembly (30) and arranged on a side wall of the main body (10), and both of the opening and closing doors (20) are slidably connected to the guide portion (40); The first direction, the second direction and the third direction intersect each other.

2. The precooling device according to claim 1, characterized in that: Each of the opening and closing doors (20) comprises a connecting plate (21) and at least two cover plates (22); one of the cover plates (22) is fixedly connected to the main body (10) to form a first cover plate (221); the remaining cover plates (22) are sequentially stacked on the first cover plate (221) in the first direction and are slidably connected to the main body (10) in the second direction; the cover plate (22) of each of the opening and closing doors (20) that is farthest from the first cover plate (221) in the first direction is a second cover plate (222), and the connecting plate (21) is connected to the second cover plate (222); the opening and closing door (20) is connected to the guide portion (40) and the corresponding synchronous belt (32) via the connecting plate (21); The connecting plate (21) can drive the second cover plate (222) to move, so that the cover plates (22) slide relative to each other, thereby allowing the opening and closing door (20) to unfold or fold; the second cover plate (222) is used to open and close the opening (12).

3. The precooling device according to claim 2, characterized in that: The connecting plate (21) is a long strip structure extending along the third direction; When the two opening and closing doors (20) close the opening (12), the connecting plates (21) of the two opening and closing doors (20) abut against each other.

4. The precooling device according to claim 2, characterized in that: Each of the opening and closing doors (20) further comprises a positioning member (23), wherein the positioning member (23) comprises a first positioning portion (231) and a second positioning portion (232) which cooperate with each other, wherein the first positioning portion (231) is arranged on the second cover plate (222), and the second positioning portion (232) is arranged on the connecting plate (21); The first positioning portion (231) cooperates with the second positioning portion (232) to limit the position of the connecting plate (21) and the second cover plate (222) in the second direction, and allows the connecting plate (21) and the second cover plate (222) to float in the first direction and / or the third direction.

5. The precooling device according to claim 1, characterized in that: The guide portion (40) is a guide rail extending along the second direction, and the guide rail is connected to the side wall of the main body (10).

6. The precooling device according to claim 1, characterized in that: The precooling device further comprises an air blowing block (80), wherein the air blowing block (80) is arranged on the main body (10), and the air blowing block (80) is configured to allow dry gas to pass through and blow toward a side of the opening and closing door (20) facing away from the precooling chamber (11).

7. The precooling device according to claim 6, characterized in that: The precooling device further comprises an air blowing plate (90), wherein the air blowing plate (90) is arranged on the main body (10); The precooling device comprises at least two of the blowing blocks (80), and all of the blowing blocks (80) are arranged on the blowing plate (90) at intervals along the second direction, and the blowing plate (90) is constructed to allow the blowing blocks (80) to communicate with an air source.

8. The precooling device according to claim 1, characterized in that: The precooling device further comprises a heating element (110), wherein the heating element (110) is arranged on the main body (10) and is used for heating the main body (10).

9. The precooling device according to claim 1, characterized in that: The precooling device further comprises at least two sensors (50), and all of the sensors (50) are arranged on the main body (10); The sensor (50) is used to detect the positions of the two opening and closing doors (20) so as to control the size of the opening (12) opened by the opening and closing doors (20).

10. A test sorting device, characterized in that: It includes a loading device, a testing device, a receiving device, a conveying device and a precooling device as described in any one of claims 1 to 9; the conveying device is used to convey the test piece provided by the loading device to the precooling device for precooling, and to convey the test piece precooled by the precooling device to the testing device, and to convey the test piece after being tested by the testing device to the receiving device for receiving.

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