Weighing mechanism and automatic weighing machine

Abstract

The utility model discloses a weighing mechanism and an automatic weighing machine, the weighing mechanism comprises an electronic scale and a weighing jig, the top of the electronic scale is provided with a scale tray, and the scale tray is provided with a first connecting hole; the weighing jig is used for bearing the vapor chamber, and a connecting disc is arranged at the bottom; a second connecting hole opposite to the first connecting hole is formed in the connecting disc, and the connecting disc is connected to the scale pan through a bolt penetrating through the first connecting hole and the second connecting hole; the bolt is sleeved with an elastic piece, one end of the elastic piece abuts against the head of the bolt, and the other end of the elastic piece abuts against the connecting disc. And a gap is formed between the hole wall of the second connecting hole and the rod part of the bolt, so that the weighing jig can move along the horizontal direction relative to the scale pan. According to the weighing mechanism provided by the utility model, the damage to the electronic scale caused by collision and impact in the process of transferring the vapor chamber to the weighing jig can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of weighing equipment, in particular to a weighing mechanism and an automatic weighing machine having the same. Background Art

[0002] During the vapor chamber processing process, liquid needs to be injected into the vapor chamber, and the vapor chamber needs to be weighed after injection to ensure that the amount of liquid injected into the vapor chamber is within the standard range. In the related art, the vapor chamber to be weighed is picked up by a robot and placed on the scale pan of an electronic scale for weighing. The scale pan is equipped with a weighing fixture for fixing the vapor chamber. During the process of the robot transferring the vapor chamber to the weighing fixture on the electronic scale, the robot's gripper may collide with the weighing fixture. In addition, since the electronic scale used for weighing the vapor chamber has high precision and a small range, it is easy for the electronic scale to be damaged after being impacted. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a weighing mechanism that can reduce damage to the electronic scale caused by collision and impact during the transfer of the heat plate to the weighing fixture.

[0004] The utility model also provides an automatic weighing machine with the weighing mechanism.

[0005] According to the first aspect of the present invention, the weighing mechanism includes an electronic scale and a weighing jig, wherein a weighing pan is provided on the top of the electronic scale, and a first connecting hole is provided on the weighing pan; the weighing jig is used to support a heat spreader, and a connecting plate is provided on the bottom; a second connecting hole opposite to the first connecting hole is provided on the connecting plate, and the connecting plate is connected to the weighing pan by bolts passing through the first connecting hole and the second connecting hole; wherein an elastic member is sleeved on the bolt, and one end of the elastic member abuts against the head of the bolt, and the other end abuts against the connecting plate, and a gap exists between the hole wall of the second connecting hole and the rod of the bolt.

[0006] The weighing mechanism according to the embodiment of the first aspect of the present utility model has at least the following beneficial effects:

[0007] Since the weighing jig is connected to the weighing pan by bolts passing through the first connecting hole and the second connecting hole, and is pressed against the top of the weighing pan by the elastic force of the elastic member, and there is a gap between the hole wall of the second connecting hole and the bolt, when the weighing jig is subjected to external force impact during the process of transferring the heat spreader to the weighing jig, the weighing jig can move slightly in the horizontal direction relative to the weighing pan, and can also swing at a small angle relative to the weighing pan, thereby effectively reducing the impact force transmitted to the weighing pan and reducing the damage to the electronic scale caused by collision impact.

[0008] According to the weighing mechanism of some embodiments of the first aspect of the present utility model, the first connecting hole is a threaded hole, and the rod portion of the bolt is threadedly engaged with the threaded hole.

[0009] According to the weighing mechanism of some embodiments of the first aspect of the present invention, the weighing jig further includes a vertical plate, the bottom of the vertical plate is connected to the connecting plate, and two inclined suspension columns are provided on the front side of the top of the vertical plate.

[0010] According to the weighing mechanism of some embodiments of the first aspect of the present utility model, the angle between the suspension column and the vertical direction is 70°.

[0011] According to the weighing mechanism of some embodiments of the first aspect of the present invention, the weighing mechanism also includes a protective frame, which includes a protective beam that spans the electronic scale from above. The protective beam is located on the rear side of the top of the vertical plate, and a gap is formed between the protective beam and the rear side surface of the vertical plate, and is used to limit the movement of the vertical plate toward the rear side.

[0012] According to the weighing mechanism of some embodiments of the first aspect of the present invention, the weighing mechanism further includes an incoming material sensor, which is arranged on one side of the weighing jig and is used to detect whether there is a heat spreader on the weighing jig.

[0013] According to the weighing mechanism of some embodiments of the first aspect of the present invention, the incoming material sensor is arranged on the protective frame and located on the rear side of the vertical plate. A hollow groove is provided on the vertical plate. The detection end of the incoming material sensor faces the hollow groove, and the hollow groove is located below the suspension column.

[0014] According to some embodiments of the first aspect of the present invention, the weighing mechanism further includes a marble base, and the protective frame and the electronic scale are both arranged on the top of the marble base.

[0015] According to the weighing mechanism of some embodiments of the first aspect of the present invention, the protective frame is movably and adjustably arranged on the top of the marble base along the front-back direction.

[0016] According to some embodiments of the second aspect of the utility model, the automatic weighing machine includes the weighing mechanism, the manipulator and the conveyor line of the above-mentioned first aspect embodiment. The conveyor line is arranged on one side of the weighing mechanism and is used to convey the heat spreader to one side of the weighing mechanism. The manipulator is arranged on one side of the conveyor line and is used to transfer the heat spreader between the conveyor line and the weighing mechanism.

[0017] The automatic weighing machine according to some embodiments of the second aspect of the present utility model has at least the following beneficial effects:

[0018] By adopting the weighing mechanism of the first embodiment described above, the damage to the electronic scale caused by collision and impact during the transfer of the heat spreader to the weighing fixture can be reduced, thereby reducing the number of maintenance times of the automatic weighing machine and increasing the service life of the automatic weighing machine.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic structural diagram of a weighing mechanism according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Exploded view of the weighing mechanism shown;

[0023] Figure 3 for Figure 2 Schematic diagram of the connection structure between the electronic scale, weighing fixture and adjustment platform shown in;

[0024] Figure 4 for Figure 3 The structural diagram of the weighing fixture is shown in FIG;

[0025] Figure 5 for Figure 3 Schematic diagram of the connection between the bolt and the elastic member shown in;

[0026] Figure 6 for Figure 2 Schematic diagram of the connection between the middle protective frame and the incoming material sensor.

[0027] Reference numerals:

[0028] Electronic scale 10; weighing pan 11; weighing fixture 20; connecting plate 21; second connecting hole 210; vertical plate 22; hollow groove 221; hanging column 23; bolt 30; head 31; polished rod portion 321; screw portion 322; protective frame 40; second connecting groove 401; protective beam 41; beam body 411; abutment block 412; third connecting groove 413; connecting plate 42; first connecting groove 421; incoming material sensor 50; marble base 60; third connecting hole 61; elastic member 70; adjustment platform 80; fixing plate 81; adjustment plate 82; leveling screw 83; wind shield 90; entrance and exit 91. DETAILED DESCRIPTION

[0029] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, left, right, front, back, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0031] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] The following reference Figure 1 To the attached Figure 6 , describing the weighing mechanism of the first embodiment of the utility model.

[0034] Reference Figure 1 According to some weighing mechanisms of the present invention, the electronic scale 10 and the weighing jig 20 are included; wherein the electronic scale 10 is used to weigh the heat spreader, and the weighing jig 20 is arranged on the electronic scale 10 and is used to carry and position the heat spreader so that the heat spreader can remain in a vertical state during the weighing process.

[0035] In some of these embodiments, reference Figures 2 to 5 The electronic scale 10 is provided with a weighing pan 11 on the top, and a first connecting hole is provided on the weighing pan 11 to facilitate the connection of the weighing jig 20; a connecting plate 21 is provided at the bottom of the weighing jig 20, and a second connecting hole 210 opposite to the first connecting hole is provided on the connecting plate 21, and the connecting plate 21 is connected to the weighing pan 11 by a bolt 30 passing through the first connecting hole and the second connecting hole 210; an elastic member 70 is sleeved on the bolt 30, and one end of the elastic member 70 abuts against the head 31 of the bolt 30, and the other end abuts against the connecting plate 21; wherein the aperture of the second connecting hole 210 is larger than the diameter of the rod of the bolt 30 passing through it, so that there is a gap between the hole wall of the second connecting hole 210 and the rod of the bolt 30, so that the weighing jig 20 can move slightly in the horizontal direction relative to the weighing pan 11, and can also swing at a small angle relative to the weighing pan 11.

[0036] It should be understood that since the weighing jig 20 is connected to the weighing pan 11 by the bolts 30 passing through the first connecting hole and the second connecting hole 210, and is pressed against the top of the weighing pan 11 by the elastic force of the elastic member 70, and since there is a gap between the hole wall of the second connecting hole 210 and the bolt 30, when the weighing jig 20 is subjected to external force impact (for example, the gripper of the manipulator collides with the weighing jig 20) during the process of transferring the heat spreader to the weighing jig, the weighing jig 20 can move slightly in the horizontal direction relative to the weighing pan 11, and can also swing at a small angle relative to the weighing pan 11 (that is, the front side of the connecting plate 21 can be allowed to slightly tilt relative to the rear side), thereby effectively reducing the impact force transmitted to the weighing pan 11 and reducing the damage to the electronic scale caused by the collision impact.

[0037] It is understood that, in order to prevent the bolt 30 from falling out of the first connecting hole under the elastic force of the elastic member 70, in one embodiment, the first connecting hole is a threaded hole, and the rod of the bolt 30 is threadedly engaged with the threaded hole. Figure 5 and Figure 6 The rod portion of the bolt 30 includes a polished rod portion 321 and a screw portion 322 with a thread that are connected to each other, wherein the diameter of the screw portion 322 is smaller than the diameter of the polished rod portion 321, and the end of the polished rod portion 321 away from the screw portion 322 is connected to the head 31 of the screw, the polished rod portion 321 of the rod portion is passed through the second connecting hole 210, and the diameter of the polished rod portion 321 is smaller than the aperture of the second connecting hole 210, while the screw portion 322 of the rod portion is passed through the first connecting hole and is threadedly engaged with the internal thread in the first connecting hole.

[0038] It should be understood that in some other embodiments, the first connecting hole can also be selected to be set as a smooth conventional through hole, and the rod of the bolt 30 passes through the second connecting hole 210 and the first connecting hole, and then is threadedly connected to the nut, and then abuts against the scale pan 11 through the nut to limit the bolt 30 from falling out of the first connecting hole.

[0039] It is understandable that in some embodiments, the elastic member 70 is selected to be a compression spring, and the compression spring is sleeved on the bolt 30 .

[0040] It should be understood that the heat spreader that needs to be filled with water and weighed includes a main body and an injection tube, wherein the injection tube is arranged at the upper end of the main body and is connected to the interior of the main body, and grooves are symmetrically arranged on both sides of the top of the main body to facilitate clamping or hanging the heat spreader through the grooves.

[0041] It is understandable that in order to enable the heat soaking plate to be carried on the weighing fixture 20 in a vertical state, in one embodiment, referring to Figure 3 and Figure 4The weighing jig 20 further includes a vertical plate 22, which is vertically arranged, and the bottom of the vertical plate 22 is connected to the connecting plate 21, while two inclined suspension posts 23 are provided on the front side of the top of the vertical plate 22. The two inclined suspension posts 23 can cooperate with the two slots on the top of the main body of the heat spreader to allow the heat spreader to be suspended in a vertical state on the weighing jig 20. In addition, to prevent the heat spreader from falling off the suspension posts 23 and to facilitate hanging on the suspension posts 23, the inclination angle of the suspension posts 23 is set to 70°, that is, the angle between the axis direction of the suspension post 23 and the vertical direction is 70°, and the end of the suspension post 23 away from the vertical plate 22 is higher than the end connected to the vertical plate 22, so that under the action of gravity, the heat spreader can automatically slide to the side of the vertical plate 22, making the suspension of the heat spreader on the weighing jig 20 more convenient and stable.

[0042] It should be understood that when the weighing jig 20 is subjected to a large impact, due to the small gap between the second connecting hole 210 and the rod of the bolt 30, the floating connection between the connecting plate 21 and the weighing pan 11 cannot completely eliminate the impact force transmitted to the weighing pan 11. For example, when the claws of the manipulator that grabs the heat spreader contact the weighing jig 20 and continue to move toward the rear side, the stroke is greater than the gap between the second connecting hole 210 and the rod of the bolt 30. At this time, under the impact of the claws of the manipulator, the hole wall of the second connecting hole 210 will abut against the rod of the bolt 30, and then the impact force will be transmitted to the weighing pan 11 through the rod of the bolt 30. Therefore, in order to further reduce the risk of the impact force being transmitted to the weighing pan 11, in some embodiments, reference is made to Figure 2 and Figure 4 and Figure 6 The weighing mechanism also includes a protective frame 40, which includes a protective beam 41 that spans the electronic scale 10 from above. The protective beam 41 is located on the rear side of the top of the vertical plate 22, and forms a gap with the rear side surface of the vertical plate 22, and is used to limit the movement of the vertical plate 22 to the rear side; due to the gap between the protective beam 41 and the rear side surface of the vertical plate 22, when the impact degree of the weighing jig 20 is small, the gap between the protective beam 41 and the vertical plate 22 can allow the weighing jig 20 to move slightly in the horizontal direction relative to the scale pan 11 or swing at a small angle to reduce the impact force transmitted to the scale pan 11; when the impact degree of the weighing jig 20 is large, the blocking of the protective beam 41 will prevent the weighing jig 20 from moving significantly or swinging at a large angle, thereby preventing the connecting plate 21 from transmitting the impact force to the scale pan 11, and instead transmitting the impact force to the protective beam 41.

[0043] It should be understood that in some embodiments, the width of the gap between the protective beam 41 and the rear side surface of the vertical plate 22 is set to be smaller than the single-sided gap between the second connecting hole 210 and the rod portion of the bolt 30, that is, smaller than half of the difference between the aperture of the second connecting hole 210 and the diameter of the light rod portion 321, so that when the weighing jig 20 moves due to a large impact, the rear side surface of the vertical plate 22 has already abutted against the protective beam 41 before the rod portion of the bolt 30 contacts the hole wall of the second connecting hole 210, thereby transmitting the impact force to the protective beam 41 in advance, so as to further reduce the risk of damaging the electronic scale.

[0044] It is understood that in some of these embodiments, reference Figure 6 The protective beam 41 includes a beam body 411 and an abutment block 412, wherein the abutment block 412 is arranged on the beam body 411 and corresponds to the position of the vertical plate 22, and when the vertical plate 22 moves toward the rear side, the abutment block 412 can abut against the vertical plate 22, thereby limiting the movement of the vertical plate 22 toward the rear side; at the same time, a third connecting groove 413 extending along the front and rear directions is provided on the abutment block 412, and the abutment block 412 is connected to the beam body 411 by a fastener passing through the third connecting groove 413, so that the front and rear position of the abutment block 412 on the beam body 411 can be adjusted by loosening the fastener, thereby facilitating the adjustment of the gap width between the protective beam 41 and the vertical plate 22.

[0045] It is understood that in some of these embodiments, reference Figure 2 and Figure 6 The weighing mechanism also includes an incoming material sensor 50, which is arranged on one side of the weighing jig 20, and the detection end of the incoming material sensor 50 is facing the area on the weighing jig 20 located below the suspension column 23, so as to detect whether there is a heat spreader on the weighing jig 20. The incoming material sensor 50 is electrically connected to the electronic scale 10 so that the electronic scale can be quickly started to weigh and record after the incoming material is detected.

[0046] For example, refer to Figure 2 、 Figure 4 and Figure 6 In one embodiment, in order to prevent the incoming material sensor 50 from affecting the incoming material of the heat spreader from the front side of the weighing jig 20, the protective frame 40 includes a connecting plate 42 extending to the rear side of the vertical plate 22, and the incoming material sensor 50 is arranged on the connecting plate 42 of the protective frame 40, that is, the incoming material sensor 50 is located on the rear side of the vertical plate 22, and to avoid the obstruction of the vertical plate 22, a hollow groove 221 is provided on the vertical plate 22, and the hollow groove 221 is located below the hanging column 23, that is, when the heat spreader is suspended on the hanging column 23, the heat spreader will be in front of the hollow groove 221, and the detection end of the incoming material sensor 50 is facing the hollow groove 221, so that the incoming material sensor 50 can detect whether the weighing jig 20 carries a heat spreader through the hollow groove 221.

[0047] It should be understood that referring to Figure 2 、 Figure 4 and Figure 6 In order to enable the detection end of the incoming material sensor 50 to be better aligned with the hollow groove 221, a plurality of first connecting grooves 421 extending along the width direction of the vertical plate 22 are provided on the connecting plate 42, and the plurality of first connecting grooves 421 are arranged and distributed along the width direction of the vertical plate 22 (that is, the left and right direction shown in the drawings). The incoming material sensor 50 is installed on the connecting plate 42 by fasteners passing through the first connecting grooves 421, thereby facilitating adjustment of the position of the incoming material sensor 50 in the width direction of the vertical plate 22; at the same time, the hollow groove 221 on the vertical plate 22 is arranged to extend along the height direction of the vertical plate 22, thereby further reducing the installation accuracy requirement of the incoming material sensor 50 in the height direction, so that the incoming material sensor 50 can more easily detect the heat sink through the hollow groove 221; it should be understood that the incoming material sensor 50 can choose to adopt a photoelectric sensor or an infrared sensor.

[0048] It is understandable that in order to reduce the influence of external vibration on the accuracy of the weighing mechanism, in some embodiments, reference is made to Figure 2 The weighing mechanism also includes a marble base 60 , and the protective frame 40 and the electronic scale 10 are both arranged on the top of the marble base 60 .

[0049] Furthermore, in order to facilitate adjustment of the width of the gap between the protective beam 41 and the vertical plate 22, the protective frame 40 is movably adjusted along the front-back direction on the top of the marble base 60. For example, in one embodiment, referring to Figure 2 and Figure 6 A third connecting hole 61 is provided at the top of the left and right edges of the marble base 60, and a second connecting groove 401 is provided at the position of the bottom of the protective frame 40 corresponding to the third connecting hole 61. The second connecting groove 401 extends along the front-to-back direction, and the protective frame 40 is connected to the marble base 60 by a fastener passing through the second connecting groove 401 and the third connecting hole 61. When the fastener is loosened, the protective frame 40 can be moved along the front-to-back direction to adjust the position of the protective frame 40 on the top of the marble base 60, thereby maintaining a suitable distance between the protective frame 40 and the weighing jig 20.

[0050] It can be understood that in some embodiments, an adjustment platform 80 is provided on the top of the marble base 60, and the adjustment platform 80 includes a fixed plate 81 and an adjustment plate 82, wherein the fixed plate 81 is provided on the marble base 60, and the adjustment plate 82 is provided on the fixed plate 81, and the electronic scale 10 is provided on the adjustment plate 82; a plurality of leveling screws 83 are threadedly connected to the adjustment plate 82, and the lower end of the screw of the leveling screw 83 abuts against the fixed plate 81, and then the adjustment plate 82 can be kept level by rotating each leveling screw 83, thereby improving the weighing accuracy of the electronic scale 10.

[0051] It should be understood that in order to further prevent the external environment from affecting the weighing accuracy, in some embodiments, reference is made to Figure 1 and Figure 2 The weighing mechanism also includes a windshield 90, which is arranged on the top of the marble base 60, and the protective frame 40, electronic scale 10, weighing fixture 20, incoming material sensor 50 and adjustment platform 80 are all located inside the windshield 90. In order to prevent the windshield 90 from affecting the transfer of the heat soaking plate, the front side of the windshield 90 is provided with an entrance and exit 91 that allows the clamp carrying the heat soaking plate (or other transfer mechanism for transferring the heat soaking plate) to enter and exit.

[0052] The following describes some embodiments of the automatic weighing machine of the second aspect of the utility model. The automatic weighing machine of this embodiment includes the weighing mechanism, manipulator and conveyor line of the above-mentioned embodiment of the first aspect. The conveyor line is arranged on one side of the weighing mechanism and is used to convey the heat spreader to one side of the weighing mechanism. The manipulator is arranged on one side of the conveyor line and is used to transfer the heat spreader between the conveyor line and the weighing mechanism.

[0053] It should be understood that by adopting the weighing mechanism of the first embodiment mentioned above, the damage to the electronic scale caused by collision and impact during the transfer of the heat spreader to the weighing jig can be reduced, thereby reducing the number of maintenance times of the automatic weighing machine and increasing the service life of the automatic weighing machine.

[0054] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A weighing mechanism, characterized in that: include: An electronic scale, with a weighing pan provided on the top, and a first connecting hole provided on the weighing pan; A weighing fixture is used to support a heat spreader, and a connecting plate is provided at the bottom; a second connecting hole opposite to the first connecting hole is provided on the connecting plate, and the connecting plate is connected to the weighing pan by bolts passing through the first connecting hole and the second connecting hole; wherein, An elastic member is sleeved on the bolt, and one end of the elastic member abuts against the head of the bolt, and the other end abuts against the connecting plate. A gap exists between the hole wall of the second connecting hole and the rod of the bolt.

2. A weighing mechanism according to claim 1, characterized in that: The first connecting hole is a threaded hole, and the rod portion of the bolt is threadably matched with the threaded hole.

3. A weighing mechanism according to claim 1, characterized in that: The weighing fixture further includes a vertical plate, the bottom of the vertical plate is connected to the connecting plate, and two inclined suspension columns are provided on the front side of the top of the vertical plate.

4. A weighing mechanism according to claim 3, characterized in that: The included angle between the suspension column and the vertical direction is 70°.

5. A weighing mechanism according to claim 3, characterized in that: The weighing mechanism also includes a protective frame, which includes a protective beam that spans the electronic scale from above. The protective beam is located on the rear side of the top of the vertical plate, and a gap is formed between the protective beam and the rear side surface of the vertical plate, and is used to limit the movement of the vertical plate toward the rear side.

6. A weighing mechanism according to claim 5, characterized in that: The weighing mechanism further includes an incoming material sensor, which is disposed on one side of the weighing jig and is used to detect whether there is a soaking plate on the weighing jig.

7. A weighing mechanism according to claim 6, characterized in that: The incoming material sensor is arranged on the protective frame and is located at the rear side of the vertical plate. A hollow groove is provided on the vertical plate. The detection end of the incoming material sensor faces the hollow groove, and the hollow groove is located below the suspension column.

8. A weighing mechanism according to claim 5, characterized in that: The weighing mechanism also includes a marble base, and the protective frame and the electronic scale are both arranged on the top of the marble base.

9. A weighing mechanism according to claim 8, characterized in that: The protective frame is movably and adjustably arranged on the top of the marble base along the front-back direction.

10. An automatic weighing machine, characterized in that: It includes the weighing mechanism, manipulator and conveyor line according to any one of claims 1 to 9, wherein the conveyor line is arranged on one side of the weighing mechanism and is used to convey the heat spreader to one side of the weighing mechanism, and the manipulator is arranged on one side of the conveyor line and is used to transfer the heat spreader between the conveyor line and the weighing mechanism.

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