Laminating device and laminating equipment

Abstract

The invention provides a sheet combining device and sheet combining equipment, and the sheet combining device comprises a lever mechanism which comprises a rotatable rod body, and the rod body is provided with an input end and an output end; the balance weight is loaded at the input end of the rod body; wherein the gravity of the counter weight generates a lever effect through the rotation of the rod body, so that the output end continuously applies laminating pressure for extruding the two diaphragms of the core body towards each other in the rotation process of the rod body.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of production of cores such as pressure sensors, and in particular to a laminating device and a laminating apparatus. BACKGROUND

[0002] Laminating refers to a process of stacking and pressing multiple ceramic core pieces (usually by upper and lower molds) under high temperature conditions with the aid of a bonding agent such as glass glue, so that the pieces are integrated into a sealed structure after the glue layer softens, flows and solidifies again. This process is widely used in the fields of honeycomb ceramic carriers for automobile exhaust purification, high-temperature fuel cell electrolyte sheets, and semiconductor ceramic packaging substrates. The laminating quality directly determines the interlayer air tightness, mechanical strength and thermal cycle life of the final product, and therefore puts high requirements on the stroke, pressure, temperature resistance and wear resistance of the tooling fixture.

[0003] The laminating device commonly used at present is of a "fixed stroke" structure, and a typical fixed stroke device includes rigid pressing plates, guide columns, locking nuts and other elements. By adjusting the position of the nut, the stroke of the pressing plate is set at one time.

[0004] After the glass glue softens and shrinks under high temperature, the actual total thickness of the stack decreases, and the fixed stroke cannot adapt to the change, resulting in excessive pressure stress, for example. Experiments show that when the pressure stress exceeds the compressive strength threshold of the ceramic material (usually 100 MPa to 150 MPa), cracks will occur at the edges and micro-cracks will appear inside, and in severe cases, the whole piece will burst. For multi-layer laminating of more than 10 pieces, the stress concentration effect between the layers is more obvious, and the scrap rate is high. Due to the tolerances in the thickness of the glue layer in different areas of the stack, the fixed stroke cannot be locally self-adapted and adjusted, resulting in over-pressing in some areas and under-pressing in some areas. The under-pressing area will delaminate and leak during subsequent high-temperature use, and the over-pressing area will crack, ultimately leading to sealing failure. In summary, the fixed stroke laminating method has been difficult to meet the process requirements of high-end ceramic cores for high density, no cracks and high consistency laminating, and a new type of laminating tooling is urgently needed that can compensate for the shrinkage of the glue layer in real time under high temperature environment, accurately control the laminating pressure and have high wear resistance and long service life. SUMMARY

[0005] In view of this, the present disclosure provides a laminating device and a laminating apparatus, which can keep the laminating pressure substantially constant even if the glue layer softens and shrinks.

[0006] The technical solution of the present disclosure is implemented as follows: In a first aspect, the present disclosure provides a laminating device for laminating a core, comprising: a lever mechanism comprising a rotatable rod body having an input end and an output end; a counterweight loaded on the input end of the rod body; The gravity of the counterweight produces a lever action through rotation of the rod body, so that the output end continuously applies a lamination pressure to the two diaphragms of the core body towards each other during rotation of the rod body.

[0007] In some optional examples, the counterweight comprises a plurality of sub-counterweights, each of which is detachably loaded on the rod body.

[0008] In some optional examples, the lamination device further comprises: a guide formed with a through hole extending in the direction of the lamination pressure; a transmission rod inserted in the through hole, and an outer peripheral surface of the transmission rod matched with an inner peripheral surface of the through hole, so that the transmission rod can only move in the axial direction of the through hole, wherein the transmission rod is connected to the rod body, so that the lamination pressure is generated through transmission of the transmission rod.

[0009] In some optional examples, the guide comprises a guide body and a ceramic bushing formed with the through hole, two axial end portions of the ceramic bushing interference fit with the guide body, and an intermediate portion of the ceramic bushing other than the two axial end portions clearance fit with the guide body.

[0010] In some optional examples, the lamination device further comprises: a loading plate for parallel loading of individual diaphragms of the core body, the loading plate being formed with at least two through holes; at least two positioning pins corresponding to the at least two through holes, the at least two positioning pins for being inserted into the at least two through holes of the loading plate to guide movement of the loading plate along the at least two positioning pins, so that the two diaphragms of each core body are correctly positioned relative to each other after lamination is completed.

[0011] In some optional examples, the lamination device further comprises a pressing plate for parallel pressing against the loading plate to generate the lamination pressure, wherein a side surface of the pressing plate pressing against the loading plate is formed with a plurality of bosses, a top surface of each boss being planar to be in surface contact with the loading plate, and the pressing plate is further formed with a plurality of corresponding hollow portions such that the top surface of each boss is annular.

[0012] In some optional examples, the loading plate is vertically arranged, the fulcrum of the lever mechanism is arranged at a position at the same height as the top of the loading plate, and the rod body extends in the horizontal direction before lamination starts.

[0013] In some optional examples, a limiting portion is arranged on the rod of the lever mechanism, and the splicing device further comprises a stop portion, when the rod rotates to a preset angle around the fulcrum of the lever mechanism, the stop portion contacts with the limiting portion and prevents the rod from further rotating, so as to limit the maximum value of the splicing pressure.

[0014] In some optional examples, the splicing device is made of high-temperature-resistant material.

[0015] In a second aspect, the present disclosure provides a splicing device, comprising two splicing devices according to the first aspect, to provide splicing pressure in opposite directions on both sides of the core.

[0016] The present disclosure provides a splicing device and a splicing device, because the rotation angle of the lever can be automatically adjusted with the actual reduction of the thickness of the stack, the output end always remains in the "just" pressing position, the pressure neither rises sharply nor relaxes; the ceramic sheet neither breaks due to overpressure nor delaminates due to underpressure. In this way, the stroke is no longer a constant that is locked in advance, but a variable that is flexibly adjusted according to the dynamic changes of the material, thereby solving the core problem of traditional devices that cannot adapt to thermal shrinkage and easy breakage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The splicing device and the splicing device provided by the embodiments of the present disclosure are provided.

[0018] Figure 2 The splicing device and the splicing device provided by the embodiments of the present disclosure are provided.

[0019] Figure 3 The splicing device and the splicing device provided by the embodiments of the present disclosure are provided.

[0020] Figure 4 The splicing device and the splicing device provided by the embodiments of the present disclosure are provided.

[0021] Figure 5 The splicing device and the splicing device provided by the embodiments of the present disclosure are provided. DETAILED DESCRIPTION

[0022] The technical solutions in the present disclosure will be described in detail below with reference to the drawings in the present disclosure.

[0023] In the prior art, the lamination process relies on a set of fixed-stroke pressing mechanisms: the distance between the pressing plate and the base is first set once before operation, and then the entire stack is sent into a high-temperature furnace. As the temperature rises, the glass glue softens and shrinks significantly, and the total thickness of the stack decreases. Since the downward distance of the pressing plate has been mechanically locked and cannot follow this change, the constant position of the pressing plate is converted into an increasingly large pressing stress. As a result, the ceramic sheet is often cracked before the lamination is completed, or local debris appears; even if it is completed, it is often layered in subsequent processes due to uneven pressure distribution. In short, the "fixed stroke" makes the device unable to match the real size change of the material in the hot state, which is the root cause of cracking, low yield and narrow process window.

[0024] In order to fundamentally eliminate the above-mentioned disadvantages, the present disclosure abandons the idea of "fixed stroke" and instead adopts a "movable force application" scheme: the gravity of the counterweight is converted into lamination pressure in real time through a lever mechanism.

[0025] Specifically, referring to Figure 1 The lamination device 1 for laminating the core C can include: The lever mechanism 10 includes a rotatable rod body 12, which has an input end 120 and an output end 121; The counterweight 20 is loaded on the input end 120 of the rod body 12; Wherein, the gravity of the counterweight 20 produces a lever effect through the rotation of the rod body 12, so that the output end 121 continuously applies a lamination pressure to the two film sheets CF of the core C during the rotation of the rod body 12.

[0026] As in Figure 1In the specific case shown in FIG. 1, since the lever body 12 of the lever mechanism 10 can rotate freely around the fulcrum 14, the rotation angle thereof directly depends on the current thickness of the stack of cores C. When the glass adhesive softens at high temperature and causes the distance between the two films CF to decrease, the gravity of the counterweight 20 causes the lever body 12 to correspondingly lower through the input end 120, and the output end 121 follows to inwardly follow, thereby maintaining the film-joining pressure in the "just tight" range. Therefore, the stack is no longer subjected to the sudden increase in pressure caused by the traditional fixed stroke, and the risk of film CF rupture due to overpressure is significantly reduced. In the opposite case, if the glass adhesive in a certain area is relatively thin and the shrinkage is small, the downward trend of the lever body 12 will be timely inhibited, and the output end 121 will still exert sufficient film-joining pressure, thereby preventing problems such as interlayer delamination and air tightness failure caused by insufficient pressure. The rotation range of the lever body 12 naturally covers a variety of stack heights, and the gravity-lever ratio of the counterweight 20 can be set to adapt to the combination of 5, 10, or even more films without additional mechanical adjustment, thereby greatly shortening the changeover time. In summary, the coordinated action of the lever mechanism 10 and the counterweight 20 changes the "stroke" from a static constant to a dynamic variable, thereby not only solving the core problem of heat shrinkage compensation, but also bringing significant technical effects in pressure control, process compatibility, high-temperature reliability, and capacity improvement.

[0027] In some embodiments according to the present disclosure, referring to Figure 1 The counterweight 20 includes a plurality of sub-counterweights 21, each of which is detachably loaded on the lever body 12.

[0028] Since the counterweight 20 is composed of several independent sub-counterweights 21, the operator only needs to increase or decrease the number of sub-counterweights 21 at the input end 120 of the lever body 12 to achieve fine step-by-step adjustment of the film-joining pressure like a "weight". For example, when the film CF is changed from 6 to 16 to simultaneously join more cores C, the required film-joining pressure often increases nonlinearly. By quickly adding or removing sub-counterweights 21 on site, the total load of the input end 120 of the lever mechanism 10 can be immediately matched to the new working condition without additional tooling or downtime for modification, and a single device can cover multiple specifications of production.

[0029] In some embodiments according to the present disclosure, referring to Figure 2 and in combination with Figure 1 The film-joining device 1 further includes: a guide 30 formed with a through hole 30H extending in the direction of the film-joining pressure; a transmission rod 40 inserted in the through hole 30H, and an outer peripheral surface of the transmission rod 40 matching an inner peripheral surface of the through hole 30H, so that the transmission rod 40 can only move in the axial direction of the through hole 30H, wherein the transmission rod 40 is connected to the lever body 12, so that the film-joining pressure is generated by transmission of the transmission rod 40.

[0030] The through hole 30H of the guide 30 is precisely machined along the direction of the pressing force of the wafer, and the outer periphery of the transmission rod 40 forms a high-precision sliding fit with the through hole 30H. Regardless of the rotation of the rod body 12, the transmission rod 40 can only move axially along the through hole 30H, so that the wafer force generated by the lever mechanism 10 is completely converted into an axial pressure on the diaphragm CF, completely eliminating the lateral component force and avoiding the shearing of the diaphragm CF. In the process of softening of the glass cement and dynamic reduction of the thickness of the stacked multiple cores C, the swing angle of the rod body 12 changes in real time, but the transmission rod 40 is always guided by the through hole 30H. As a result, the lever angle changes, but the direction of the force does not change; the stroke changes, but the pressure vector does not change. Both dynamic compensation for thermal shrinkage and absolute stability of the pressure direction are achieved, and the problem of "compensation as unbalanced load" is solved. Since the direction stability is completely determined by the shaft-hole fit of the guide 30 and the transmission rod 40, the shape and position tolerance requirements of the rod body 12, the fulcrum 14 and other components of the lever mechanism 10 can be relaxed to the general machining level, and there is no need to repeatedly align during assembly. The overall debugging time is shortened, and the waste caused by assembly errors is reduced.

[0031] In some embodiments according to the present disclosure, the guide 30 includes a guide body 31 and a ceramic sleeve 32 formed with the through hole 30H, two axial end portions 32E of the ceramic sleeve 32 are interference fit with the guide body 31, and the intermediate portion 32C of the ceramic sleeve 32 other than the two axial end portions 32E is clearance fit with the guide body 31. For example, for the ceramic sleeve 32, the radial dimension of the two axial end portions 32E can be larger, and the radial dimension of the intermediate portion 32C can be smaller, as shown in Figure 3 Accordingly, the hole diameter of the hole formed in the guide body 31 can be consistent in the axial direction.

[0032] In this way, the guide body 31 can meet the strength and rigidity requirements by using ordinary heat-resistant alloy; only the ceramic sleeve 32 is embedded, so that the high-cost and high-performance ceramic material is only concentrated on the mating surface that relatively slides with the transmission rod 40. Compared with the overall ceramic hole, the amount of material is reduced. For interference fit, when the transmission rod 40 reciprocates at high temperature, the axial friction generated cannot overcome the interference fit force, and the ceramic sleeve 32 is always firmly fixed, completely eliminating the risk of guide failure or foreign matter in the furnace caused by "sleeve being taken out". For clearance fit, the ceramic sleeve 32 can be easily pushed into place during assembly without the need for heating or press-fitting auxiliary tools. After the interference section is automatically positioned, the clearance section only plays a guiding and anti-stuck role, balancing the assembly convenience and operation reliability. When the ceramic sleeve 32 is slightly worn after long-term operation, it only needs to be knocked out of the guide body 31 and replaced with a new one, and the metal body can be reused; compared with the solution of overall ceramic hole wear and overall scrap, the maintenance cost is reduced.

[0033] In some embodiments according to the present disclosure, referring to Figure 4 The splicing device 1 further comprises: A loading plate 50 for loading the individual diaphragms CF of the core C in parallel, the loading plate 50 being formed with at least two through holes 50H; At least two positioning pins 60 corresponding to the at least two through holes 50H, the at least two positioning pins 60 being used for being inserted into the at least two through holes 50H of the loading plate 50 respectively to guide the movement of the loading plate 50 along the at least two positioning pins 60, so that the two diaphragms CF of each core C are correctly positioned relative to each other after splicing is completed.

[0034] The loading plate 50 forms a "double-point straight line" constraint with the corresponding positioning pins 60 through the at least two through holes 50H. Regardless of the change in the height of the stack, all diaphragms CF are forced to slide along the same guide axis, ensuring that the center of the plane of the upper and lower diaphragms CF is not deviated after splicing, meeting the stringent requirements of high-end ceramic cores for sealing surfaces. After adopting the "double-pin" or multi-pin layout, the circumferential degree of freedom of the loading plate 50 is completely constrained, and there is no rotational displacement between the diaphragms CF, so that secondary correction is not required in the subsequent sintering process, directly reducing the scrap rate. The entire positioning system is spring-free and thread-free, and is composed only of the loading plate 50 and the positioning pins 60, meeting the long-period automated production requirements.

[0035] In some embodiments according to the present disclosure, referring to Figure 4 The splicing device 1 further comprises a pressing plate 70 for pressing against the loading plate 50 in parallel to generate a splicing pressure, wherein the side of the pressing plate 70 that presses against the loading plate 50 is formed with a plurality of bosses 71, and the top surface of each boss 71 is planar to be in surface contact with the loading plate 50, wherein the pressing plate 70 is further formed with a corresponding plurality of hollow portions 70H such that the top surface of each boss 71 is annular.

[0036] The pressing plate 70 forms discrete surface contact with the loading plate 50 through the plurality of independent bosses 71. The top surface of each boss 71 can be a precisely ground plane, which can locally provide stable and uniform unit area pressure, and the discrete layout avoids the concentration of high points caused by shape and position errors of the entire large plane. The annular hollow portions 70H are arranged between the bosses 71, so that the overall mass of the pressing plate 70 is reduced while maintaining sufficient bending stiffness, and the lightweight brings double benefits. The pressing plate 70 only needs to be milled with the bosses 71 and the hollow portions 70H, without the need for high-precision grinding of the entire block, and the top surface of the boss can achieve high-precision contact requirements after one-time grinding, reducing the processing time compared with the entire precision pressing plate.

[0037] In some embodiments according to the present disclosure, referring to Figure 4The loading plate 50 is vertically arranged, the fulcrum 14 of the lever mechanism 10 is arranged at a position at the same height as the top of the loading plate 50, and the lever body 12 extends horizontally before the starting of the lamination.

[0038] In this embodiment, the fulcrum 14 is arranged at the same horizontal line as the top surface of the topmost loading plate 50, and the lever starts to extend horizontally without the need for additional lifting space. In addition, after the lever body 12 is subjected to the gravity of the counterweight 20, it rotates downward around the fulcrum 14. In this way, when the lamination device 1 is placed in the heating furnace, the effective height of the furnace cavity is not "eaten up", or in other words, the lamination device 1 is not limited in the vertical direction.

[0039] In some embodiments according to the present disclosure, referring to Figure 5 and Figure 2 and in combination with Figure 1 , a limiting portion 124 is arranged on the lever body 12 of the lever mechanism 10, and the lamination device 1 further comprises a stop portion 80. When the lever body 12 rotates to a preset angle around the fulcrum 14 of the lever mechanism 10, the stop portion 80 contacts the limiting portion 124 and prevents the lever body 12 from further rotating, so as to limit the maximum value of the lamination pressure.

[0040] When the lever body 12 is pressed downward by the counterweight 20 and rotates to a preset angle, the limiting portion 124 rigidly contacts the stop portion 80, and the lever stroke is immediately locked. This angle corresponds to the maximum lamination pressure value calibrated in advance, and once it is reached, it cannot be continuously increased, ensuring that the membrane CF will not be over-pressed and broken. The stop portion 80 is installed on the bracket near the fulcrum 14, and the entire safety mechanism does not increase the vertical size in the furnace chamber, nor does it affect the space advantage of the flat design.

[0041] In some embodiments according to the present disclosure, the lamination device 1 is made of high-temperature-resistant materials.

[0042] In order to adapt to the high temperature of 600°C or above in the heating furnace, the lever mechanism 10, the loading plate 50, the guide 30, the pressing plate 70, the positioning pin 60 and the stop portion 80 of the lamination device 1 are all made of high-temperature-resistant materials.

[0043] In some embodiments according to the present disclosure, referring to Figure 5The lever body 12 can include a rotating bracket 12A, a force arm 12B, and a fixed bracket 12C. The rotating shaft 141 can be inserted into a hole formed in the rotating bracket 12A, so that when the rotating shaft 141 rotates, the lever body 12 can rotate, that is, the fulcrum 14 is obtained. The limiting portion 124 described above can be a rod inserted into the hole of the rotating bracket 12A. The fixed bracket 12C can be formed with a hole into which the insertion rod 23 can be inserted, and on the other hand, each of the sub-weights 21 of the counterweight 20 can be formed in a disc shape and have a through hole in the center, so that each of the sub-weights 21 can be inserted on the insertion rod 23. In addition, it can be understood that the rotating bracket 12A forms the input end 120 described above, and the fixed bracket 12C forms the output end 121 described above.

[0044] In some embodiments according to the present disclosure, referring to Figure 2 The fulcrum 14 can be a U-shaped piece with an opening upward, and the top has a through hole to cooperate with the rotating shaft 141. In this case, the stop portion 80 described above can be the part of the U-shaped piece that is in contact with the limiting portion 124.

[0045] In some embodiments according to the present disclosure, referring to Figure 2 The splicing device 1 can further include a base 90, and the guide 30 and the fulcrum 14 described above can be fixed on the base 90. The loading plate 50 and the pressing plate 70 can be slidably arranged on the base 90.

[0046] Referring to Figure 1 The present disclosure further provides a splicing apparatus 100, which includes two splicing devices 1 according to the foregoing embodiments of the present disclosure to provide splicing pressure in opposite directions on both sides of the core C.

[0047] When the glass glue softens to make the diaphragms CF on both sides of the core C synchronously retract, the lever bodies 12 of the left and right lever mechanisms 10 only need to be rotated by a "small angle" to continuously adhere to the diaphragms CF. Since the rotation amplitude on each side is halved, the lever ratio changes very little, the pressure fluctuation of the output end 121 is small, and as a result, the splicing pressure is almost constant, the diaphragms CF are uniformly stressed, and the edge breakage rate is reduced.

[0048] It should be noted that the technical solutions described in the present disclosure can be combined arbitrarily without conflict.

[0049] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A lamination device for laminating cores, characterized in that, The laminating device comprises: a lever mechanism comprising a rotatable lever body having an input end and an output end; a counterweight loaded on the input end of the lever body; wherein the gravity of the counterweight generates a lever action through rotation of the lever body, so that the output end continuously applies a laminating pressure to press the two films of the core body towards each other during rotation of the lever body.

2. The splicing device of claim 1, wherein The counterweight comprises a plurality of sub-counterweights, each of which is detachably loaded on the lever body.

3. The splicing device of claim 1, wherein The laminating device further comprises: a guide formed with a through hole extending in the direction of the laminating pressure; a transmission lever inserted in the through hole, and an outer peripheral surface of the transmission lever matches an inner peripheral surface of the through hole, so that the transmission lever can only move in the axial direction of the through hole, wherein the transmission lever is connected to the lever body, so that the laminating pressure is generated through transmission of the transmission lever.

4. The splicing device of claim 3, wherein The guide comprises a guide body and a ceramic shaft sleeve formed with the through hole, two axial end portions of the ceramic shaft sleeve are interference-fitted with the guide body, and an intermediate portion of the ceramic shaft sleeve other than the two axial end portions is clearance-fitted with the guide body.

5. The splicing device of claim 1, wherein The laminating device further comprises: a loading plate for parallel loading of individual films of the core body, the loading plate being formed with at least two through holes; at least two positioning pins corresponding to the at least two through holes, the at least two positioning pins being used for corresponding insertion into the at least two through holes of the loading plate to guide movement of the loading plate along the at least two positioning pins, so that the two films of each core body are correctly positioned relative to each other after lamination is completed.

6. The splicing device of claim 5, wherein The laminating device further comprises a pressing plate for parallel pressing against the loading plate to generate the laminating pressure, wherein a side surface of the pressing plate pressing against the loading plate is formed with a plurality of bosses, a top surface of each boss is planar to be in surface contact with the loading plate, and the pressing plate is further formed with a plurality of corresponding hollow portions such that the top surface of each boss is annular.

7. The splicing device of claim 5, wherein The loading plate is vertically arranged, a fulcrum of the lever mechanism is arranged at a position at the same height as a top portion of the loading plate, and the lever body extends in a horizontal direction before lamination starts.

8. The splicing device of claim 1, wherein A limiting portion is arranged on the lever body of the lever mechanism, and the laminating device further comprises a stop portion, when the lever body is rotated about the fulcrum of the lever mechanism to a preset angle, the stop portion is in contact with the limiting portion and prevents further rotation of the lever body, so as to limit a maximum value of the laminating pressure.

9. The book binding apparatus according to claim 1, wherein The laminating device is made of a high-temperature-resistant material.

10. A splicing apparatus characterized by comprising: Two laminating devices according to any one of claims 1 to 9 are included to provide laminating pressures in opposite directions on both sides of the core body.

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