Stable interlayer replacement device
By designing the stable replacement device of the mezzanine, the lift mechanism and the upper fixed mechanism are used to maintain the stable in the upper cover, solving the problem of difficulty in long probe pins and complex expansion replacement operations, and achieve a safer and simpler probe replacement operation.
Patent Information
- Application Number
- CN202411454256.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-01-24
AI Technical Summary
During the assembly process of vertical probe cards, long probes are difficult to insert pins between larger upper and lower covers, and in the prior art, the interlayer replacement operation is complex and dangerous, requiring high-skilled operators.
A stable replacement device is designed, including the lifting mechanism and the upper fixed mechanism. Through these institutions, the upper cover can be stably kept, reducing the risk and complexity of the operation, and suitable for mezzanine replacement of different size probes.
It is achieved to keep the upper cover stable when replacing the probe mezzanine, reducing the risk and complexity of the operation. It is suitable for different size probes, which is convenient and small in structure.
Smart Images
Figure CN119355309A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of probe card preparation, in particular to a sandwich stabilization replacement device. Background Art
[0002] The probe head is one of the core components of the vertical probe card. The probe head usually includes an upper cover plate, a lower cover plate, a sandwich layer and multiple probes. The sandwich layer is connected between the upper cover plate and the lower cover plate to separate the two by a certain distance. Each probe is simultaneously inserted into the upper cover plate and the lower cover plate.
[0003] At present, the assembly process of the probe head in the vertical probe card on the market is as follows: the pinholes matching the probe size are processed on the ceramic upper cover plate and the lower cover plate, and then the lower cover plate, the interlayer, and the upper cover plate are stacked and fixed in sequence, and then the probes are inserted into the pinholes one by one to complete the assembly. In order to ensure that the probe head can accurately complete the PAD (pad) point connection between the chip and the PCB (Printed Circuit Board), it is necessary to ensure that each probe can accurately pass through the corresponding pinholes of the upper cover plate and the lower cover plate. Because the probes are very thin and of different lengths, the probes in some models of probe heads are relatively long. After the upper cover plate and the lower cover plate are assembled using the standard interlayer, the spacing between them is relatively large, which makes it difficult for the long probes to be inserted into the upper cover plate and the lower cover plate with a larger spacing (the longer the probe, the more delicate it will be, so it is difficult to insert the needle into the two cover plates with a larger spacing).
[0004] In order to solve the problem of difficulty in inserting long probe pins, a special processing technology has emerged in the industry - using a split interlayer for pin insertion. The split interlayer includes a first part and a second part that are arranged relatively, and the two parts are located between the upper cover plate and the lower cover plate but are not connected. When inserting the pin, a very thin interlayer is used to separate the upper cover plate and the lower cover plate for pin insertion. After the pin is inserted, the spacing between the upper cover plate and the lower cover plate is slowly increased to pull out the first part and the second part of the split interlayer respectively, and insert a standard interlayer between the two cover plates. By replacing the interlayer, the difficulty of operation can be reduced and the spacing requirements of the upper and lower cover plates can be met. At present, the work of replacing the interlayer is mainly performed manually by personnel. During the operation, the personnel need to hold the upper cover plate very steadily and lift it slowly. Otherwise, once a large shake occurs, most of the probes will be damaged; in addition, the split interlayer with a thickness difference of 0.5mm is currently used to increase layer by layer to the standard thickness of the interlayer, which is cumbersome and complicated to operate. In view of the danger, complexity and high requirement for personnel proficiency of the above-mentioned new process operation, the present application proposes a sandwich stabilization replacement device. Summary of the invention
[0005] In order to overcome the defects in the prior art, an embodiment of the present invention provides a sandwich stabilization replacement device, whose lifting mechanism and upper fixing mechanism can stably hold the upper cover plate to prevent the upper cover plate from shaking, thereby reducing the danger and complexity of the operation.
[0006] The present application discloses: a sandwich stabilization replacement device, comprising:
[0007] Bracket;
[0008] A lower fixing mechanism, detachably connected to the bracket, for fixing the lower cover plate of the probe card;
[0009] A lifting mechanism is arranged beside the bracket, and is used to lift the mounting plate;
[0010] The upper fixing mechanism is detachably connected to the mounting plate and is used to fix the upper cover plate of the probe card.
[0011] Specifically, the lower fixing mechanism includes two first fixing members arranged opposite to each other, and the first fixing member includes a first main body, a first knob, a first elastic band and a first stopper; the first main body includes a first connecting rod and a first protrusion arranged on the side of the first connecting rod facing the lower cover plate, and the first connecting rod is used to connect with the bracket; a first fixing seat is provided on the first connecting rod, and the first knob is connected to the first fixing seat; the first elastic band is wrapped around the first protrusion and the two ends of the first elastic band are respectively fixed on the first knob; the first stopper is passed through the first fixing seat to tighten the first knob.
[0012] Specifically, the first elastic band is a polyester band with a thickness between 25 and 50 μm.
[0013] Specifically, the bracket includes two supporting members arranged opposite to each other, the supporting member has a cross beam, the cross beam is provided with a first long hole extending in a horizontal direction, and both ends of the first connecting rod are respectively connected to the corresponding first long hole by bolts.
[0014] Specifically, the upper fixing mechanism includes two second fixing members arranged opposite to each other, and the second fixing member includes a second main body, a second knob, a second elastic band and a second stopper; the second main body includes a second connecting rod and a second protrusion arranged on the side of the second connecting rod facing the upper cover plate, and the second connecting rod is used to connect with the mounting plate; a second fixing seat is provided on the second connecting rod, and the second knob is connected to the second fixing seat; the second elastic band is wrapped around the second protrusion and the two ends of the second elastic band are respectively fixed on the second knob; the second stopper is passed through the second fixing seat to tighten the second knob.
[0015] Specifically, the second elastic band is a polyester band with a thickness between 25 and 50 μm.
[0016] Specifically, the mounting plate has an operating area corresponding to the bracket, a square through hole is provided in the operating area, the through hole has a first wall surface and a second wall surface arranged opposite to each other, a second long hole is provided on the first wall surface and the second wall surface respectively, and the second connecting rod is connected to the second long hole by a bolt.
[0017] Specifically, the lifting mechanism includes two lifting platforms, which are distributed at both ends of the bracket, and the lifting platforms include a top plate, a first movable rod, a second movable rod, a bottom plate, a guide rod, a screw rod and a rotating wheel; the screw rod is rotatably connected to the top plate, and the guide rod is fixed to the bottom plate; one end of the first movable rod is fixedly connected to the top plate, and the other end is slidably connected to the guide rod; one end of the second movable rod is connected to the screw rod through a nut, and the other end is fixedly connected to the bottom plate, and the second movable rod is hinged to the first movable rod; the rotating wheel is connected to one end of the screw rod away from the first movable rod; the mounting plate is connected to the top plate.
[0018] Specifically, the rotating wheels of the two lifting platforms are connected by a transmission belt.
[0019] Specifically, the interlayer stabilization replacement device also includes a base, and the bracket and the lifting mechanism are arranged on the base.
[0020] The present invention has at least the following beneficial effects:
[0021] 1. When the interlayer of the probe head needs to be replaced, the lower cover of the probe head can be clamped by the lower fixing mechanism, and the upper cover of the probe head can be clamped by the upper fixing mechanism. Then, the fasteners connecting the upper and lower covers are loosened, and the upper cover is slowly and steadily lifted up by the lifting mechanism, so that personnel can pull out the old interlayer and replace it with a new one of appropriate thickness. During the replacement process, the lifting mechanism and the upper fixing mechanism can stably hold the upper cover to prevent the upper cover from shaking, reducing the danger and complexity of the operation.
[0022] 2. This device can be used to replace the interlayer of probe heads of different sizes, and has strong applicability.
[0023] 3. The device has a compact and simple structure and is easy to operate.
[0024] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0026] Figure 1 is a schematic structural diagram of a sandwich stabilization replacement device according to an embodiment of the present invention;
[0027] Figure 2 is a schematic diagram of a structure in which a lower fixing mechanism is installed on a bracket in an embodiment of the present invention;
[0028] Figure 3 is a structural schematic diagram of a lower fixing mechanism fixing a lower cover plate at a viewing angle in an embodiment of the present invention;
[0029] Figure 4 is a structural schematic diagram of another viewing angle when the lower fixing mechanism fixes the lower cover plate in an embodiment of the present invention;
[0030] Figure 5 is a schematic structural diagram of the lifting mechanism in an embodiment of the present invention at a viewing angle;
[0031] Figure 6 It is a structural schematic diagram of the lifting mechanism in another viewing angle in an embodiment of the present invention.
[0032] The figure marks of the above drawings are: 1. bracket; 11. support member; 111. crossbeam; 112. first long hole; 211. first connecting rod; 212. first protrusion; 213. first fixing seat; 22. first knob; 23. first elastic band; 24. first stopper; 3. lifting mechanism; 31. top plate; 32. first movable rod; 33. second movable rod; 34. bottom plate; 35. guide rod; 36. screw rod; 37. rotating wheel; 4. mounting plate; 41. through hole; 411. first wall; 412. second wall; 413. second long hole; 511. second connecting rod; 512. second protrusion; 513. second fixing seat; 52. second knob; 53. second elastic band; 54. second stopper; 6. transmission belt; 7. base; 110. upper cover plate; 120. lower cover plate; 130. interlayer. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "fixed", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood by specific circumstances.
[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being “above”, “below”, and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes the first feature being below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0036] In the description of this embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore cannot be understood as limiting the scope of protection of the present application.
[0037] In addition, the terms "first", "second", etc. are only used to distinguish in description and have no special meaning.
[0038] like Figure 1 and Figure 2 As shown, the interlayer stabilization replacement device of this embodiment can be used to replace the interlayer 130 of the probe head, and the probe head includes an upper cover plate 110, a lower cover plate 120, an interlayer 130 and a plurality of probes, wherein the interlayer 130 is connected between the upper cover plate 110 and the lower cover plate 120, and each probe is simultaneously disposed in the upper cover plate 110 and the lower cover plate 120.
[0039] Combination Figure 1 and Figure 2 As shown, the interlayer stabilization replacement device of this embodiment mainly includes: a bracket 1, a lower fixing mechanism, a lifting mechanism 3 and an upper fixing mechanism. Among them, the lower fixing mechanism is detachably connected to the bracket 1, and is used to fix the lower cover plate 120; the lifting mechanism 3 is arranged beside the bracket 1, and is used to lift the mounting plate 4; the upper fixing mechanism is detachably connected to the mounting plate 4, and is used to fix the upper cover plate 110.
[0040] With the above structure, when the interlayer 130 of the probe head needs to be replaced, the lower cover plate 120 of the probe head can be clamped by the lower fixing mechanism, and the upper cover plate 110 of the probe head can be clamped by the upper fixing mechanism, and then the fasteners connecting the upper cover plate 110 and the lower cover plate 120 are loosened, and then the upper cover plate 110 is slowly and steadily lifted up by the lifting mechanism 3, so that personnel can pull out the old interlayer 130 and replace it with a new interlayer 130 of appropriate thickness. During the replacement process, the lifting mechanism 3 and the upper fixing mechanism can stably hold the upper cover plate 110 to prevent the upper cover plate 110 from shaking, thereby reducing the danger and complexity of the operation.
[0041] Specifically, combined Figures 2 to 4As shown, the lower fixing mechanism of this embodiment includes two first fixing members arranged opposite to each other. The first fixing member includes a first body, a first knob 22 , a first elastic band 23 and a first stopper 24 . Among them, the first main body includes a first connecting rod 211 and a first protrusion 212 arranged on the side of the first connecting rod 211 facing the lower cover 120, and the first connecting rod 211 is used to be detachably connected to the bracket 1; a first fixing seat 213 is provided on the first connecting rod 211, and the first knob 22 is connected to the first fixing seat 213, and the two ends of the first knob 22 are respectively exposed outside the first fixing seat 213. When the first knob 22 is not tightened, it can rotate relative to the first fixing seat 213; the two ends of the first protrusion 212 are chamfered, and the first elastic band 23 is wrapped around the first protrusion 212, and the two ends of the first elastic band 23 are respectively fixed on one end of the first knob 22 facing the first protrusion 212; the first stopper 24 is passed through the first fixing seat 213 to tighten the first knob 22. By adopting the above scheme, when it is necessary to clamp the lower cover 120, first slide the two first fixing members in opposite directions to make them close enough to contact and support the probe head lower cover 120, rotate the first stop member 24 and the first knob 22 in sequence to slightly loosen the first elastic band 23, and then insert the first elastic band 23 between the lower cover 120 and the interlayer 130, and then rotate the first knob 22 in the opposite direction to clamp the first elastic band 23 to the lower cover 120 and twist the first stop member 24 to fasten the first knob 22 to the first fixing seat 213. At this time, the first elastic band 23 produces a certain elasticity. After the two first fixing members clamp the lower cover 120 respectively, the two first fixing members are fastened to the bracket 1.
[0042] Preferably, the first elastic band 23 is a polyester band with a thickness between 25 and 50 μm, so that the first elastic band 23 can be easily inserted between the lower cover plate 120 and the interlayer 130. The first stopper 24 can be a hand screw for easy operation.
[0043] like Figure 2 As shown, the bracket 1 of this embodiment includes supporting members 11 arranged relatively to each other. The supporting member 11 has a crossbeam 111, and a first long hole 112 extending in the horizontal direction is provided on the crossbeam 111. The two ends of the first connecting rod 211 of the first fixing member are detachably connected to the corresponding first long hole 112 by bolts, so as to realize the fastening and sliding of the first connecting rod 211. With the above scheme, the spacing between the two first fixing members can be arbitrarily adjusted according to the size of the lower cover plate 120 of the probe head, thereby improving the applicability of the device to probe heads of different sizes.
[0044] like Figure 1As shown, the upper fixing mechanism of this embodiment includes two second fixing members arranged opposite to each other, and the second fixing member includes a second body, a second knob 52, a second elastic band 53 and a second stopper 54. The second body includes a second connecting rod 511 and a second protrusion 512 arranged on the side of the second connecting rod 511 facing the upper cover plate 110, and the second connecting rod 511 is used to be detachably connected to the mounting plate 4; a second fixing seat 513 is arranged on the second connecting rod 511, and the second knob 52 is connected in the second fixing seat 513, and the two ends of the second knob 52 are respectively exposed outside the second fixing seat 513; the second elastic band 53 is wound around the second protrusion 512, and the two ends of the second elastic band 53 are respectively fixed on one end of the second knob 52 facing the second protrusion 512, and in order to reduce the wear of the second elastic band 53, the two ends of the second protrusion 512 are also rounded; the second stopper 54 is passed through the second fixing seat 513 to fix the second knob 52. The structure and use method of the second fixing member of this embodiment are generally consistent with those of the first fixing member, and will not be described in detail here.
[0045] Specifically, the second elastic band 53 is also preferably a polyester band with a thickness between 25 and 50 μm, and the second stopper 54 may also be a hand screw.
[0046] Continue to refer to Figure 1 As shown, the mounting plate 4 of this embodiment has an operation area corresponding to the bracket 1. In other words, the two support members 11 of the bracket 1 enclose an area, and the mounting plate 4 has an operation area corresponding to the area, and a square through hole 41 is provided in the operation area. The through hole 41 has a first wall surface 411 and a second wall surface 412 arranged opposite to each other, and a second long hole 413 is respectively provided on the first wall surface 411 and the second wall surface 412, and the second connecting rod 511 of the second fixing member is detachably connected to the second long hole 413 by bolts. In short, the way the second fixing member is connected to the mounting plate 4 is substantially the same as the way the first fixing member is connected to the bracket 1.
[0047] like Figure 1 As shown, the device of this embodiment further includes a base 7, on which the bracket 1 and the lifting mechanism 3 are both arranged. The base 7 integrates the bracket 1 and the lifting mechanism 3 into one body, which facilitates the movement and installation of the device.
[0048] like Figure 5 and Figure 6As shown, the lifting mechanism 3 of this embodiment includes two lifting platforms, which are distributed at both ends of the bracket 1, and the two ends of the mounting plate 4 are respectively connected to the two lifting platforms. The lifting platform includes a top plate 31, a first movable rod 32, a second movable rod 33, a bottom plate 34, a guide rod 35, a screw rod 36 and a rotating wheel 37. Among them, the screw rod 36 is rotatably connected to the lower side of the top plate 31, and the guide rod 35 is fixed on the upper side of the bottom plate 34; one end of the first movable rod 32 is fixedly connected to the lower side of the top plate 31, and the other end is slidably connected to the guide rod 35; one end of the second movable rod 33 is connected to the screw rod 36 through a nut (not shown in the figure), and the other end is fixedly connected to the bottom plate 34, and the second movable rod 33 is hinged to the first movable rod 32; the rotating wheel 37 is connected to the end of the screw rod 36 away from the first movable rod 32, the top plate 31 is used to connect with the mounting plate 4, and the bottom plate 34 is used to connect with the base 7. By adopting the above scheme, when a person rotates the rotating wheel 37, as the screw rod 36 rotates, the nut is driven to move, and the end of the second movable rod 33 connected to the screw rod 36 moves along the axial direction of the screw rod 36, and the first movable rod 32 hinged to the second movable rod 33 also moves, and the top plate 31 moves up and down relative to the bottom plate 34, thereby realizing the up and down movement of the upper fixing mechanism.
[0049] Preferably, if Figure 1 As shown, the two lifting platforms of this embodiment have two rotating wheels 37 connected by a transmission belt 6, so that a person can realize the synchronous movement of the two lifting platforms by rotating one of the rotating wheels 37, thereby improving the convenience of operation for the person and reducing the difficulty of operation.
[0050] In summary, the method of using the interlayer stabilization replacement device of the present embodiment is as follows: first, slide the two second fixing members of the upper fixing mechanism in opposite directions so as to place the probe head on the lower fixing mechanism, and slide the two first fixing members of the lower fixing mechanism in opposite directions to support the probe head; slightly loosen the brass screws between the lower cover plate 120 and the interlayer 130 of the probe head (in this state, the gap between the lower cover plate 120 and the interlayer 130 is very small, just enough for the first elastic band 23 to be inserted into the gap, but the lower cover plate 120 and the interlayer 130 cannot move largely relative to each other to avoid shaking), move the first fixing member to insert the first elastic band 23 between the lower cover plate 120 and the interlayer 130, tighten the first knob 22 and the first stopper 24 to fix the first elastic band 23, and fix the first fixing member on the bracket; then; slide the two second fixing members of the upper fixing mechanism in opposite directions until they touch The edge of the upper cover plate 110 is adjusted by operating the lifting platform to make the height of the upper fixing mechanism appropriate, and the brass screws between the upper cover plate 110 and the interlayer 130 are slightly loosened. The second elastic band 53 is inserted between the upper cover plate 110 and the interlayer 130, and then the second elastic band 53 is tightened and fixed, and the second fixing member is fixed to the mounting plate; after the upper cover plate 110 and the lower cover plate 120 are clamped by the corresponding fixing mechanism, the brass screws between the upper cover plate 110 and the interlayer 130 can be completely loosened. The brass screws between the lower cover plate 120 and the interlayer 130 are removed, and the rotating wheel 37 of the lifting platform is slowly rotated to raise the upper cover plate 110 to a preset height, and the old interlayer 130 is pulled out to both sides and replaced with a new interlayer 130 of suitable thickness; after the replacement is completed, the upper cover plate 110 is lowered, and the brass screws between the upper cover plate 110 and the interlayer 130 are tightened, and the two first fixing parts are slid away from each other, and the brass screws between the lower cover plate 120 and the interlayer 130 are tightened to take out the probe head.
[0051] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.
Claims
1. A sandwich stabilization replacement device, characterized in that: include: Bracket; A lower fixing mechanism, detachably connected to the bracket, for fixing the lower cover plate of the probe head; A lifting mechanism is arranged beside the bracket, and is used to lift the mounting plate; The upper fixing mechanism is detachably connected to the mounting plate and is used to fix the upper cover plate of the probe head.
2. The sandwich stabilization replacement device according to claim 1, characterized in that: The lower fixing mechanism includes two first fixing members arranged opposite to each other, and the first fixing member includes a first main body, a first knob, a first elastic band and a first stopper; the first main body includes a first connecting rod and a first protrusion arranged on the side of the first connecting rod facing the lower cover plate, and the first connecting rod is used to connect with the bracket; a first fixing seat is provided on the first connecting rod, and the first knob is connected to the first fixing seat; the first elastic band is wrapped around the first protrusion and the two ends of the first elastic band are respectively fixed to the first knob; the first stopper is passed through the first fixing seat to tighten the first knob.
3. The interlayer stabilization replacement device according to claim 2, characterized in that: The first elastic band is a polyester band with a thickness between 25 and 50 μm.
4. The sandwich stabilization replacement device according to claim 2, characterized in that: The bracket includes two supporting members arranged opposite to each other, the supporting member has a cross beam, the cross beam is provided with a first long hole extending in a horizontal direction, and the two ends of the first connecting rod are respectively connected to the corresponding first long hole by bolts.
5. The sandwich stabilization replacement device according to claim 1, characterized in that: The upper fixing mechanism includes two second fixing members arranged opposite to each other, and the second fixing member includes a second main body, a second knob, a second elastic band and a second stopper; the second main body includes a second connecting rod and a second protrusion arranged on the side of the second connecting rod facing the upper cover plate, and the second connecting rod is used to connect with the mounting plate; a second fixing seat is provided on the second connecting rod, and the second knob is connected to the second fixing seat; the second elastic band is wrapped around the second protrusion and the two ends of the second elastic band are respectively fixed to the second knob; the second stopper is passed through the second fixing seat to tighten the second knob.
6. The sandwich stabilization replacement device according to claim 5, characterized in that: The second elastic band is a polyester band with a thickness between 25 and 50 μm.
7. The sandwich stabilization replacement device according to claim 5, characterized in that: The mounting plate has an operating area corresponding to the bracket, a square through hole is provided in the operating area, the through hole has a first wall surface and a second wall surface arranged opposite to each other, a second long hole is provided on the first wall surface and the second wall surface respectively, and the second connecting rod is connected to the second long hole by a bolt.
8. The sandwich stabilization replacement device according to claim 1, characterized in that: The lifting mechanism includes two lifting platforms, which are distributed at both ends of the bracket. The lifting platforms include a top plate, a first movable rod, a second movable rod, a bottom plate, a guide rod, a screw rod and a rotating wheel; the screw rod is rotatably connected to the top plate, and the guide rod is fixed to the bottom plate; one end of the first movable rod is fixedly connected to the top plate, and the other end is slidably connected to the guide rod; one end of the second movable rod is connected to the screw rod through a nut, and the other end is fixedly connected to the bottom plate, and the second movable rod is hinged to the first movable rod; the rotating wheel is connected to one end of the screw rod away from the first movable rod; the mounting plate is connected to the top plate.
9. The sandwich stabilization replacement device according to claim 1, characterized in that: The rotating wheels of the two lifting platforms are connected by a transmission belt.
10. The sandwich stabilization replacement device according to claim 1, characterized in that The interlayer stabilization replacement device also includes a base, and the bracket and the lifting mechanism are arranged on the base.