Preheating conveying device and test sorting machine

Abstract

The utility model relates to a pre-warming conveying device and a test sorting machine. The pre-warming conveying device comprises a pre-warming main body and a heating layer arranged on at least one side of the pre-warming main body. At least one pre-warming channel extending in the first direction is formed in the pre-warming body. The chips can be conveyed along the pre-warming channels, and the heating pieces in the heating layer can heat the corresponding pre-warming channels, so that the chips are pre-warmed while being conveyed. As the heating power of each heating part in the heating piece is independently adjustable, the heating power of each heating part can be correspondingly adjusted according to the heat dissipation efficiency of each part of the preheating channel. The heating power of the heating part corresponding to the area with the high heat dissipation efficiency can be correspondingly increased, and the heating power of the heating part corresponding to the area with the low heat dissipation efficiency can be correspondingly reduced. Thus, the temperature difference of all positions in the pre-heating channel is small, temperature distribution is more uniform, and therefore the pre-heating effect can be improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a preheating conveying device and a testing sorting machine. Background Technology

[0002] Chips typically undergo performance testing before leaving the factory to ensure quality. The testing process generally involves loading, preheating, testing, and unloading. To improve efficiency, preheating can be performed during chip transport. In related technologies, gravity sorting machines use preheating shuttles to transport chips along preheating channels, with heating elements arranged under each channel to preheat the chips. However, research has found that the temperature distribution within existing preheating channels is uneven, with a large temperature difference between the inlet and outlet, resulting in poor preheating performance. Utility Model Content

[0003] Therefore, it is necessary to provide a preheating conveying device and a testing and sorting machine that can improve the preheating effect in order to address the above problems.

[0004] A preheating conveying device includes a preheating body and a heating layer disposed on at least one side of the preheating body; at least one preheating channel extending along a first direction is formed inside the preheating body; the heating layer includes heating elements disposed corresponding to the preheating channel and extending along the corresponding preheating channel, each heating element including a plurality of heating parts arranged along the first direction, and the heating power of each heating part is individually adjustable.

[0005] In one embodiment, each of the heating elements includes four heating portions, wherein two of the heating portions are located at both ends of the heating element along the first direction, and the other two heating portions are located in the middle of the heating element.

[0006] In one embodiment, the heating layer further includes heat-compensating elements that are alternately arranged with the heating element in a second direction perpendicular to the first direction. Each heat-compensating element includes at least two heat-compensating portions located at both ends of the first direction, and the heating power of each heat-compensating portion is individually adjustable.

[0007] In one embodiment, at least one side of the preheating body is covered with a heat equalization plate, and the heating layer is disposed on the side of the heat equalization plate opposite to the preheating body or embedded inside the heat equalization plate.

[0008] In one embodiment, the heat spreader is a copper plate.

[0009] In one embodiment, the heating layer is sheet-like and is attached to the surface of the heat spreader facing away from the preheating body.

[0010] In one embodiment, the preheating body includes a first insulation plate, a channel plate, and a heat-conducting plate. The channel plate and the heat-conducting plate are arranged to form the preheating channel. The first insulation plate is covered on the side of the channel plate facing away from the heat-conducting plate, and the heating layer is disposed on the side of the preheating body facing the heat-conducting plate.

[0011] In one embodiment, a second insulation board is also included, which is disposed on the side of the heating layer facing away from the preheating body.

[0012] In one embodiment, the preheating body has a plurality of preheating channels spaced apart along a second direction perpendicular to the first direction, and the heating layer includes a plurality of heating elements that correspond one-to-one with the plurality of preheating channels, and the heating power of each heating element is individually adjustable.

[0013] A test sorting machine includes a preheating conveying device as described in any of the preferred embodiments above.

[0014] The aforementioned pre-temperature conveying device and testing sorting machine allow chips to be conveyed along a pre-temperature channel. Heating elements in the heating layer heat the corresponding pre-temperature channel, thus pre-temperatureing the chips simultaneously during transport. Since the heating power of each heating element is individually adjustable, the heating power of each element can be adjusted according to the heat dissipation efficiency at different points in the pre-temperature channel. Heating power can be increased for areas with higher heat dissipation efficiency, and decreased for areas with lower efficiency. This results in smaller temperature differences and more uniform temperature distribution throughout the pre-temperature channel, thereby improving the pre-temperature effect. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the preheating conveying device in one embodiment of the present invention;

[0017] Figure 2 for Figure 1 Exploded view of the preheating conveyor shown;

[0018] Figure 3 for Figure 1 The diagram shows the structure of the heating layer in the preheating conveying device.

[0019] Figure 4 This is a schematic diagram showing the heating power distribution of each heating element in the heating layer under one of the operating conditions. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0026] Please see Figure 1 This utility model provides a preheating conveying device 100. Furthermore, this utility model also provides a test sorting machine (not shown), which includes the preheating conveying device 100.

[0027] The aforementioned test sorting machine is used to test electronic components, such as chips, and sorts the tested chips according to the test results. The pre-temperature conveying device 100 can transport the chip to be tested from a designated position to the test station and pre-heat the chip during the transport process so that the chip reaches the set temperature in advance. In this way, when the chip is transported to the test station, it can be tested at the set temperature, thus improving efficiency.

[0028] Of course, in order to successfully complete a series of operations such as feeding, preheating, testing and unloading, the above-mentioned testing and sorting machine generally also includes a conveying mechanism, a testing mechanism and an unloading mechanism, but these are not the focus of this application, so they will not be elaborated here.

[0029] Please refer to the following: Figure 2 In one embodiment of the present invention, the preheating conveying device 100 includes a preheating body 110 and a heating layer 120.

[0030] The preheating body 110 has at least one preheating channel 101 extending along a first direction, allowing the chip to be transported along the preheating channel 101. In practical applications, the first direction is usually set vertically or diagonally downwards, so the chip can be transported along the preheating channel 101 under its own gravity. The heating layer 120 is energized and can heat the preheating channel 101 to a set temperature such as 125°C, 150°C, or 180°C, thereby preheating the chip passing through the preheating channel 101. Temperature sensors are arranged inside or outside the preheating channel 101 to acquire the temperature at various points in the preheating channel 101 in real time.

[0031] Specifically, in this embodiment, the preheating body 110 includes a first insulation plate 111, a channel plate 112 and a heat-conducting plate 113. The channel plate 112 and the heat-conducting plate 113 are arranged to form a preheating channel 101. The first insulation plate 111 is covered on the side of the channel plate 112 that is away from the heat-conducting plate 113.

[0032] The channel plate 112 can be made of steel plate, which has high structural strength. Grooves, partitions, or other structures can be provided on opposite sides of the channel plate 112 and the heat-conducting plate 113, allowing them to cooperate to form the preheating channel 101. The heat-conducting plate 113 can be made of copper or other good thermal conductors, enabling rapid conduction of heat from the heating layer 120 to the preheating channel 101. The first insulation plate 111 can be made of synthetic stone, which has lower thermal conductivity. The first insulation plate 111 effectively prevents heat dissipation, thus helping to maintain a stable temperature within the preheating channel 101.

[0033] The heating layer 120 can be disposed on only one side of the preheating body 110, or on opposite sides of the preheating body 110. Considering cost and assembly difficulty, in this embodiment, the heating layer 120 is disposed on only one side of the preheating body 110. Furthermore, since the first insulation plate 111 of the preheating body 110 has low thermal conductivity, while the heat-conducting plate 113 has high thermal conductivity, the heating layer 120 is disposed on the side of the preheating body 110 facing the heat-conducting plate 113. Therefore, the heat generated by the heating layer 120 can be quickly conducted to the preheating channel 101 through the heat-conducting plate 113, and is not easily dissipated from the first insulation plate 111 side.

[0034] Furthermore, in this embodiment, the preheating conveying device 100 also includes a second insulation plate 140, which is disposed on the side of the heating layer 120 facing away from the preheating body 110. The second insulation plate 140 can be fixedly connected to the preheating body 110 by means of threaded fastening, welding, etc., and the heating layer 120 is sandwiched between the preheating body 110 and the second insulation plate 140. The second insulation plate 140 can be made of the same material as the first insulation plate 111, such as synthetic stone, which has a low thermal conductivity. Therefore, the second insulation plate 140 can provide heat insulation for the heating layer 120, thereby effectively avoiding heat waste in the heating layer 120 and helping to improve the heating efficiency of the heating layer 120 for the preheating channel 101.

[0035] Please refer to the following: Figure 3 More specifically, the heating layer 120 includes heating elements 121 corresponding to the preheating channels 101, and each heating element 121 extends along its corresponding preheating channel 101. The heating element 121 is elongated and can be in the form of a heating plate, heating rod, etc. In the thickness direction of the preheating body 110, the heating element 121 at least partially overlaps with its corresponding preheating channel 101. In this way, each preheating channel 101 can be heated by its corresponding heating element 121.

[0036] In this embodiment, a plurality of preheating channels 101 are formed in the preheating body 110 and are spaced apart along a second direction perpendicular to the first direction. The heating layer 120 includes a plurality of heating elements 121 that are arranged one-to-one with the plurality of preheating channels 101, and the heating power of each heating element 121 is individually adjustable.

[0037] When the heating layer 120 is energized, the multiple heating elements 121 operate independently and generate heat, thereby heating their respective preheating channels 101. Since the heating power of each heating element 121 is individually adjustable, the heat output of each heating element 121 can be adjusted individually according to the actual working conditions, thereby achieving separate temperature regulation of the multiple preheating channels 101 to ensure that the temperature of the multiple preheating channels 101 tends to be consistent.

[0038] Furthermore, each heating element 121 includes multiple heating sections 1211 arranged along the first direction, and the heating power of each heating section 1211 is individually adjustable. Each heating section 1211 in the heating element 121 can be connected to an external temperature control module (not shown). The temperature control module can individually control and adjust the heating power of each heating section 1211, thereby enabling different heating sections 1211 in the same heating element 121 to have different heating powers and heat outputs.

[0039] Along the extension direction of the preheating channel 101, the heat dissipation efficiency varies at different points due to differences in location and connection with surrounding components. Generally, the heat dissipation efficiency is higher in the area of ​​the preheating channel 101 near the inlet and outlet, while it is lower in the middle area.

[0040] Based on this, the heating power of each heating element 1211 can be adjusted according to the heat dissipation efficiency at each point in the preheating channel 101. For heating elements 1211 corresponding to areas with high heat dissipation efficiency, their heating power can be increased accordingly, thereby increasing heat generation; while for heating elements 1211 corresponding to areas with low heat dissipation efficiency, their heating power can be decreased accordingly, thereby reducing heat generation. In this way, the difference between the heating amount and the heat dissipation at each point in the preheating channel 101 can be made more consistent, resulting in a smaller temperature difference and a more uniform temperature distribution at each point in the preheating channel 101, thus improving the preheating effect.

[0041] Specifically, in this embodiment, each heating element 121 includes four heating sections 1211, with two heating sections 1211 located at both ends of the heating element 121 along the first direction, and the other two heating sections 1211 located in the middle of the heating element 121. In actual operation, the heating power of the two heating sections 1211 at both ends is higher than that of the two heating sections 1211 in the middle. Furthermore, the heating power of the heating section 1211 near the outlet of the preheating channel 101 is higher than that of the heating section 1211 near the inlet.

[0042] Of course, in other embodiments, the number of heating elements 1211 in each heating element 121 may be increased or decreased as needed.

[0043] The heating power of each heating element 1211 under specified operating conditions can be obtained in advance through simulation. Then, the temperature control module adjusts the heating power of multiple heating elements 1211 to the required value based on the simulation results. Please refer to [link / reference]. Figure 4 Taking the preheating channel 101 as an example, the heating power distribution of each heating element 121 and its internal heating section 1211 is shown in the figure. It can be seen that by individually controlling the heating power of each heating section 1211 in each heating element 121 to the set value, the temperature in each preheating channel 101 can be stabilized at 180°C.

[0044] In addition, please refer to again Figure 3 In this embodiment, the heating layer 120 further includes a heat-compensating element 122 that is alternately arranged with the heating element 121 in a second direction perpendicular to the first direction. Each heat-compensating element 122 includes at least two heat-compensating portions 1221 located at both ends of the first direction, and the heating power of each heat-compensating portion 1221 is individually adjustable.

[0045] The temperature compensation element 122 can adopt the same structure as the heating element 121 and can be heated when energized. Since the heat dissipation efficiency is high in the area of ​​the preheating channel 101 near the inlet and feed port, relying solely on the corresponding heating element 121 may not be sufficient to maintain the position of the preheating channel 101 near the inlet and feed port at a stable set temperature. When the temperature compensation portions 1221 at both ends of the length of the temperature compensation element 122 are energized and heated, they can compensate for the temperature of the area of ​​the preheating channel 101 near the inlet and feed port. By controlling the heating power of the temperature compensation portions 1221, it can be ensured that the area of ​​the preheating channel 101 near the inlet and feed port can also maintain the set temperature.

[0046] Obviously, in other embodiments, when the corresponding heating element 121 is sufficient to maintain the set temperature at all points in the preheating channel 101, the heat compensation element 122 may not be necessary. In this case, the space between two adjacent heating elements 121 may be hollowed out or separated by a material that does not participate in heating.

[0047] Please refer to it again. Figure 1 and Figure 2 In this embodiment, at least one side of the preheating body 110 is covered with a heat spreader 130. Specifically, the heat spreader 130 is disposed on the side facing the heat conduction plate 113 and is in contact with the heat conduction plate 113. The heat spreader 130 can be made of a material with high thermal conductivity, such as copper. The thickness of the copper plate used as the heat spreader 130 is generally not less than 6 mm.

[0048] The heating layer 120 can be disposed on the side of the heat spreader 130 facing away from the preheating body 110, or it can be embedded inside the heat spreader 130. It can be seen that the heat generated by the heating layer 120 needs to be evenly heated by the heat spreader 130 before it is transferred to the preheating channel 101, thus further improving the uniformity of temperature distribution in the preheating channel 101.

[0049] Furthermore, in this embodiment, the heating layer 120 is sheet-shaped and is attached to the surface of the heat spreader 130 facing away from the preheating body 110. Multiple heating elements 121 and heat-compensating elements 122 can be obtained by cutting the sheet-shaped heating material. The sheet-shaped heating layer 120 has a larger contact area with the heat spreader 130, thus improving the thermal conductivity between the heating elements 121 and the heat spreader 130, allowing heat to be quickly conducted from the heating elements 121 to the heat spreader 130.

[0050] It should be noted that in other embodiments, the heating layer 120 may also include a plurality of rod-shaped heating elements 121, in which case the heating elements 121 may also be embedded inside the heat spreader 130.

[0051] In the aforementioned pre-temperature conveying device 100 and testing sorting machine, the chip can be conveyed along the pre-temperature channel 101, and the heating elements 121 in the heating layer 120 can heat the corresponding pre-temperature channel 101, thereby pre-temperatureing the chip while it is being conveyed. Since the heating power of each heating element 1211 is individually adjustable, the heating power of each heating element 1211 can be adjusted according to the heat dissipation efficiency at different points in the pre-temperature channel 101. The heating power of the heating element 1211 corresponding to areas with high heat dissipation efficiency can be increased accordingly, while the heating power of the heating element 1211 corresponding to areas with low heat dissipation efficiency can be decreased accordingly. This results in a smaller temperature difference and a more uniform temperature distribution throughout the pre-temperature channel 101, thereby improving the pre-temperature effect.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0053] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A preheating conveying device, characterized in that, The device includes a preheating body and a heating layer disposed on at least one side of the preheating body; the preheating body has at least one preheating channel extending along a first direction inside; the heating layer includes heating elements disposed corresponding to the preheating channel and extending along the corresponding preheating channel, each heating element including multiple heating parts arranged along the first direction, and the heating power of each heating part is individually adjustable.

2. The preheating conveying device according to claim 1, characterized in that, Each of the heating elements includes four heating sections, two of which are located at both ends of the heating element along the first direction, and the other two heating sections are located in the middle of the heating element.

3. The preheating conveying device according to claim 1, characterized in that, The heating layer also includes heat-compensating elements that are alternately arranged with the heating element in a second direction perpendicular to the first direction. Each heat-compensating element includes at least two heat-compensating portions located at both ends of the first direction, and the heating power of each heat-compensating portion is individually adjustable.

4. The preheating conveying device according to claim 1, characterized in that, At least one side of the preheating body is covered with a heat equalization plate, and the heating layer is disposed on the side of the heat equalization plate opposite to the preheating body or embedded inside the heat equalization plate.

5. The preheating conveying device according to claim 4, characterized in that, The heat spreader is made of copper.

6. The preheating conveying device according to claim 4, characterized in that, The heating layer is sheet-like and is attached to the surface of the heat spreader that faces away from the preheating body.

7. The preheating conveying device according to claim 1, characterized in that, The preheating body includes a first insulation board, a channel board, and a heat-conducting plate. The channel board and the heat-conducting plate form the preheating channel. The first insulation board covers the side of the channel board facing away from the heat-conducting plate. The heating layer is disposed on the side of the preheating body facing the heat-conducting plate.

8. The preheating conveying device according to claim 7, characterized in that, It also includes a second insulation board, which is disposed on the side of the heating layer facing away from the preheating body.

9. The preheating conveying device according to any one of claims 1 to 8, characterized in that, The preheating body has a plurality of preheating channels spaced apart along a second direction perpendicular to the first direction. The heating layer includes a plurality of heating elements that correspond one-to-one with the plurality of preheating channels, and the heating power of each heating element is individually adjustable.

10. A testing and sorting machine, characterized in that, Includes the preheating conveying device as described in any one of claims 1 to 9 above.

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