Press-fit device and press-fit method for assembling metal rod and ceramic plate

Abstract

The invention discloses a pressing device for assembling a metal rod and a ceramic plate, which comprises a guide column, a pressing device, a pressing device and a pressing device, the guide column comprises a fixed outer column and a movable inner column, the fixed outer column is abutted against the ceramic plate, and the movable inner column is abutted against the metal rod and is slidably connected to the inside of the fixed outer column; the pressing assembly abuts against the movable inner column and drives the movable inner column to extrude the metal rod to be embedded in the ceramic disc, the movable supporting assembly is arranged below the ceramic disc, and the ceramic disc can move on the movable supporting assembly. The ceramic plate is arranged on the movable supporting assembly, so that the position of the ceramic plate can be flexibly changed on the movable supporting assembly, the metal rod is connected through the guide column, then the guide effect on the movement of the metal rod is achieved, and the movable inner column in the guide column is extruded through the pressing assembly; therefore, the movable inner column is driven to move relative to the fixed outer column, interference fit is formed by means of the good deformation characteristic of the metal rod, and therefore the stability of mechanical connection is guaranteed.

Description

Technical Field

[0001] The invention relates to the field of semiconductor technology, and in particular to a pressing device and a pressing method for assembling a metal rod and a ceramic disk. Background Art

[0002] Ceramics and metals are two materials that are very different in properties and applications. Ceramics are known for their high hardness, high wear resistance, high temperature resistance, corrosion resistance, and good electrical insulation, while metals are widely used for their good electrical conductivity, thermal conductivity, ductility, and plasticity. In many applications, these two materials need to be effectively connected to achieve specific functions or performance requirements. In the field of semiconductor packaging, the connection between ceramics and metals is particularly important because it is directly related to the reliability, performance, and life of the package.

[0003] For example, the publication number "CN118553697A" discloses "a double-sided integrated direct liquid-cooled silicon carbide power module packaging structure and preparation method". The packaging structure includes an upper heat sink, an insulating dielectric layer and a lower heat sink arranged from top to bottom; wherein both heat sinks include a ceramic base plate and a metal flow channel, and are arranged in parallel with their respective ceramic base plates; the insulating dielectric layer is located between the two heat sinks, including an upper lead frame and a lower lead frame made of metal material, and a bare chip and a metal inlay located between the two lead frames, and is filled with plastic packaging material; the upper and lower lead frames are fixedly connected to the ceramic base plates of the two heat sinks, respectively, to form a double-sided integrated packaging structure. However, in actual applications, due to the large difference in thermal expansion coefficients between ceramics and metals, thermal stress is easily generated during the welding process, resulting in reduced connection strength and more cumbersome operations. Summary of the invention

[0004] In view of the problems of reduced connection strength and complicated operation in the prior art mentioned in the background technology, the present invention provides a pressing device for assembling metal rods and ceramic disks, which can achieve low-cost and high-efficiency mechanical assembly of metal rods and ceramics, and has a simple assembly process and high device precision.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions.

[0006] A pressing device for assembling a metal rod and a ceramic disc, comprising: Guide column: comprising a fixed outer column abutting against the ceramic disk and a movable inner column abutting against the metal rod, wherein the movable inner column is slidably connected inside the fixed outer column; Press-fit assembly: abuts against the movable inner column, driving the movable inner column to squeeze the metal rod and fit it on the ceramic plate Movable supporting assembly: arranged under the ceramic plate, the ceramic plate can move on the movable supporting assembly.

[0007] In the present application, the ceramic disk is arranged on the movable support assembly, so that the position of the ceramic disk can be flexibly changed on the movable support assembly, and the metal rod is connected by a guide column, which guides the movement of the metal rod, and the movable inner column in the guide column is squeezed by the pressing assembly, thereby driving the movable inner column to move relative to the fixed outer column, wherein since the fixed outer column abuts on the ceramic disk and the movable inner column abuts the metal rod, the movement of the movable inner column can drive the metal rod to move relative to the ceramic disk, and the metal rod and the ceramic disk are driven by the extrusion force to be engaged and connected, and the good deformation characteristics of the metal rod are used to form an interference fit, thereby ensuring the stability of the mechanical connection; at the same time, the connection cost is low and the connection strength is high.

[0008] Preferably, the movable inner column includes a pressure block, the fixed outer column includes a top block, and an elastic member is arranged between the top block and the pressure block. A pressure block is arranged on the movable inner column, and a top block is arranged on the fixed outer column, wherein the pressure block is located above the top block, and an elastic member is arranged between the pressure block and the top block. When the movable inner column moves relative to the fixed outer column, the pressure block presses the elastic member downward, thereby causing the elastic member to contract, thereby extending the ejector pin under the movable inner column, thereby ensuring the movement stability of the movable inner column and self-resetting the movable inner column.

[0009] Preferably, the top of the fixed outer column is connected to a limit block, and the side of the pressure block away from the elastic member abuts against the limit block. By setting the limit block, the return stroke of the movable inner column can be limited.

[0010] Preferably, the fixed outer column includes a positioning opening provided near one side of the metal rod, and when the fixed outer column abuts the ceramic disk, the metal rod gap fits the positioning opening. The fixed outer column avoids the connection and abutment of the metal rod through the positioning opening, and the fixed outer column transfers all the pressure received to the ceramic disk, so that the metal rod can only move through the squeezing of the movable inner column. The positioning opening on the fixed outer column can establish a preliminary connection and positioning with the metal rod, and because a preliminary positioning constraint has been established between the metal rod and the ceramic disk, the positioning position of the guide column can be determined through the positioning opening, and at the same time, a certain positioning constraint effect is produced on the guide column, thereby avoiding the guide column from being offset and skewed, and improving the structural stability of the guide column.

[0011] Preferably, the movable support assembly includes a chassis, the size of the chassis is larger than the size of the ceramic plate, and a plurality of roller units are arranged on the side of the chassis close to the ceramic plate. The roller units arranged on the chassis can rotate flexibly, so when the ceramic plate is placed on the chassis, it can abut against the roller units, so that the ceramic plate can be displaced relative to the chassis, thereby improving the placement flexibility of the ceramic plate.

[0012] Preferably, the movable support includes a protective jig plate, the protective jig plate is engaged with the ceramic disk, and a pick-up notch is provided at the edge of the protective jig plate. The movable support includes a protective jig plate, and after the ceramic disk is connected through the protective jig plate, the protective jig plate is placed on the chassis, thereby forming a protective effect on the ceramic disk. In addition, a pick-up notch is provided on the protective jig plate, thereby improving the convenience of picking up and placing the ceramic plate.

[0013] Preferably, a plurality of telescopic columns are arranged on the chassis, each of which is arranged in an area other than the roller unit on the chassis. A driving unit is connected to the bottom of the chassis, and the driving unit can drive the telescopic column to move close to the ceramic disk, and the telescopic column stops moving after it abuts against the ceramic disk. In order to ensure the connection accuracy between the ceramic disk and the metal rod, it is necessary to control the stability of the ceramic disk during the process of the pressing assembly squeezing the metal rod. A telescopic column is also arranged on the chassis, wherein the telescopic column can move up and down relative to the chassis, and the setting position of the telescopic column is on the remaining area of ​​the chassis other than the roller unit, and the telescopic movement of the telescopic column is controlled by the driving unit, wherein the driving unit can be an electromagnetic disk, and the telescopic column is arranged as a magnetic column with magnetic poles. When the electromagnetic disk is energized, a repulsive force is generated, driving the magnetic column to rise. After power is off, the magnetic column descends due to its own gravity and the attraction to the electromagnetic disk; the telescopic column can also be arranged as an elastic plunger, and the driving unit can be arranged as a disc-shaped structure, driving all telescopic columns to rise synchronously. When the telescopic column touches the ceramic disk / protective treatment The plate is compressed after being abutted; through this method, the telescopic column that touches the ceramic disk can stop rising, while the telescopic column that does not touch the ceramic disk can continue to rise. Since there are multiple telescopic columns, it can adapt to the placement position of the ceramic disk, and a limiting edge structure is formed at the edge of the ceramic disk to avoid radial movement of the ceramic disk. At the same time, since the telescopic column always maintains an abutment relationship with the ceramic disk after abutting the ceramic disk, it avoids the ceramic disk from contacting the ground with only the roller unit that can rotate flexibly, thereby increasing the static friction of the ceramic disk, and further avoiding radial movement of the ceramic disk and improving stability.

[0014] The invention discloses a pressing method, which comprises the following steps: S1. A connecting hole is provided on the ceramic disk, and a convex ring is provided on the metal rod; the metal rod is placed on the connecting hole of the ceramic disk, and the convex ring abuts against the opening of the connecting hole; S2, placing the guide column on the metal rod, with the fixed outer column abutting against the ceramic plate, and the movable inner column abutting against the metal rod; S3. Move the ceramic disk on the movable support assembly, align the guide column with the pressing assembly, start the pressing assembly to press the movable inner column to drive the metal rod to embed into the connecting hole, and the convex ring and the connecting hole have an interference fit.

[0015] Preferably, in step S1, a vacuum suction pen is used to adsorb the metal rod, the vacuum suction pen is provided with an adsorption opening, the convex ring is provided in the middle of the metal rod, and when the vacuum suction pen adsorbs the metal rod, the convex ring abuts against the adsorption opening. The vacuum suction pen can generate a vacuum environment, thereby generating an adsorption force on the metal rod, which is convenient for the installation operation of the metal rod. The size of the adsorption opening corresponds to the size of the metal rod, and the size of the adsorption opening is smaller than the size of the convex ring on the metal rod, so that when the vacuum suction pen adsorbs the metal rod, it can be limited by the convex ring to improve the stability of adsorption, and at the same time control the adsorption amount, so that part of the metal rod is exposed, which is convenient for docking the connection hole.

[0016] Preferably, in step S3, after the guide column is aligned with the pressing assembly, the driving unit is started, the telescopic column rises, and the telescopic column stops rising after abutting the ceramic disk, and the telescopic column that does not abut the ceramic disk continues to rise, and when the edge of the ceramic disk abuts against a number of telescopic columns, the pressing assembly is started. When the ceramic disk corresponds to the position of the pressing assembly, the telescopic column is driven to rise by the driving unit, a part of the lifting column abuts the bottom of the ceramic disk, and a part of the ceramic disk continues to move, so that the bottom of the ceramic disk contacts a large number of telescopic column ends, the friction force is increased to avoid radial displacement, and the ceramic disk is also limited in the radial direction by the side of the telescopic column, thereby ensuring the stability of the ceramic disk.

[0017] The beneficial effects of the present invention are as follows: (1) It can realize low-cost and high-efficiency mechanical assembly of metal rods and ceramics, and the assembly process is simple and the device precision is high; (2) It can ensure the flexibility of the placement of the ceramic disk and improve the alignment efficiency of the guide column and the press-fit assembly; (3) On the basis of ensuring the flexibility of the ceramic disk, the radial position stability of the ceramic disk can be improved when using the press-fit assembly, the friction force can be increased, and the limit can be increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an axonometric view of the present invention.

[0019] Figure 2 It is a partial axonometric sectional view of the present invention.

[0020] Figure 3 yes Figure 2 A partial enlarged view of .

[0021] Figure 4 It is a cross-sectional view of the vacuum suction pen of the present invention.

[0022] Figure 5 This is a flow chart of Example 4.

[0023] Figure 6 yes Figure 5 A partial enlarged image of point A in the middle.

[0024] Figure 7 It is a structural schematic diagram of Example 5.

[0025] In the figure: 1 guide column, 11 fixed outer column, 111 top block, 12 movable inner column, 121 pressing block, 13 elastic member, 14 limit block, 15 positioning opening; 2 Press-fit components; 3 movable support assembly, 31 chassis, 311 roller unit, 312 telescopic column, 313 driving unit, 314 electromagnetic disk, 315 magnetic column, 316 elastic plunger, 32 protective fixture plate, 321 pick-and-place notch; 4 metal rods, 41 convex rings; 5 ceramic plate, 51 connecting hole; 6 vacuum suction pen, 61 suction opening. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1: like Figure 1 , 2 , 3, a pressing device for assembling a metal rod and a ceramic disk, comprising: The guide column 1 includes a fixed outer column 11 abutting against the ceramic plate 5 and a movable inner column 12 abutting against the metal rod 4, and the movable inner column 12 is slidably connected inside the fixed outer column 11; The pressing assembly 2 abuts against the movable inner column 12 to drive the movable inner column 12 to squeeze the metal rod 4 to be embedded on the ceramic plate 5. The movable supporting assembly 3 is arranged below the ceramic plate 5, and the ceramic plate 5 can move on the movable supporting assembly 3.

[0028] In the present application, the ceramic disk 5 is arranged on the movable support assembly 3, so that the ceramic disk 5 can flexibly change its position on the movable support assembly 3, and the metal rod 4 is connected through the guide column 1, thereby guiding the movement of the metal rod 4, and the movable inner column 12 in the guide column 1 is squeezed by the pressing assembly 2, thereby driving the movable inner column 12 to move relative to the fixed outer column 11, wherein since the fixed outer column 11 abuts on the ceramic disk 5, and the movable inner column 12 abuts on the metal rod 4, the movement of the movable inner column 12 can drive the metal rod 4 to move relative to the ceramic disk 5, and the metal rod 4 is driven by the extrusion force to engage and connect with the ceramic disk 5, and the good deformation characteristics of the metal rod 4 are used to form an interference fit, thereby ensuring the stability of the mechanical connection; at the same time, the connection cost is low and the connection strength is high.

[0029] like Figure 3As shown, the movable inner column 12 includes a pressing block 121, the fixed outer column 11 includes a top block 111, and an elastic member 13 is arranged between the top block 111 and the pressing block 121. The pressing block 121 is arranged on the movable inner column 12, and the top block 111 is arranged on the fixed outer column 11, wherein the pressing block 121 is located above the top block 111, and the elastic member 13 is arranged between the pressing block 121 and the top block 111. When the movable inner column 12 moves relative to the fixed outer column 11, the pressing block 121 will press the elastic member 13 downward, thereby causing the elastic member 13 to contract, thereby extending the ejector pin under the movable inner column 12, thereby ensuring the movement stability of the movable inner column 12 and self-resetting the movable inner column 12.

[0030] like Figure 3 As shown, the top of the fixed outer column 11 is connected to a limit block 14, and the side of the pressing block 121 away from the elastic member 13 abuts against the limit block 14. By setting the limit block 14, the return stroke of the movable inner column 12 can be limited.

[0031] like Figure 3 As shown, the fixed outer column 11 includes a positioning opening 15 provided on one side close to the metal rod 4. When the fixed outer column 11 abuts against the ceramic disk 5, the metal rod 4 is loosely matched with the positioning opening 15. The fixed outer column 11 avoids the connection and abutment with the metal rod 4 through the positioning opening 15, and the fixed outer column 11 transmits all the pressure received to the ceramic disk 5, so that the metal rod 4 can only move through the squeezing of the movable inner column 12. The positioning opening 15 on the fixed outer column 11 can establish a preliminary connection and positioning with the metal rod 4, and since a preliminary positioning constraint has been established between the metal rod 4 and the ceramic disk 5, the positioning position of the guide column 1 can be determined through the positioning opening 15, and at the same time, a certain positioning constraint effect is produced on the guide column 1, thereby avoiding the guide column 1 from being offset and skewed, and improving the structural stability of the guide column 1.

[0032] The assembly and working process of the pressing device for assembling the metal rod and the ceramic disk in this embodiment are as follows: In this embodiment, the guide column 1 includes a fixed outer column 11 and a movable inner column 12, wherein the fixed outer column 11 sleeves the movable inner column 12 inside, so that the movable inner column 12 can slide up and down relative to the guide outer column. Further, in this embodiment, a pressure block 121 is provided on the movable inner column 12, and a top block 111 is provided on the fixed outer column 11, wherein the pressure block 121 is located above the top block 111, and an elastic member 13 is provided between the pressure block 121 and the top block 111. In this embodiment, the elastic member 13 is a spring sleeved on the movable inner column 12. When the movable inner column 12 moves relative to the fixed outer column 11, the pressure block 121 will squeeze the elastic member 13 downward, thereby causing the elastic member 13 to contract, thereby extending the ejector pin under the movable inner column 12. In actual application, the fixed outer column 11 is abutted against the ceramic disk 5, and the positioning opening 15 on the fixed outer column 11 is aligned with the metal rod 4. During the downward extrusion action of the movable inner column 12, the fixed outer column 11 always remains fixed, so the ejector pin on the movable inner column 12 can squeeze the metal rod 4 into the connecting hole 51.

[0033] Furthermore, in the present embodiment, a convex ring 41 is provided on the metal rod 4, wherein the cross-sectional dimension of the convex ring 41 is larger than the cross-sectional dimension of the metal rod 4, and the cross-sectional dimension of the convex ring 41 is slightly larger than the hole dimension of the connecting hole 51. Therefore, when the metal rod 4 is placed on the connecting hole 51, the convex ring 41 abuts against the hole position of the connecting hole 51, ensuring that the metal rod 4 does not directly fall into the connecting hole 51. At the same time, the convex ring 41 is arranged in the middle position of the metal rod 4, so that when the metal rod 4 is aligned with the connecting hole 51, the area of ​​the metal rod 4 in the lower half of the convex ring 41 can enter the connecting hole 51, forming a preliminary positioning effect. Subsequently, under the extrusion of the movable inner column 12, the convex ring 41 of the metal rod 4 is pressed into the connecting hole 51. Since the metal rod 4 is made of metal and has good deformation characteristics, the deformation of the metal rod 4 generates an interference connection between the convex ring 41 and the connecting hole 51, thereby maintaining the connection stability between the metal rod 4 and the connecting hole 51.

[0034] In the present application, a pressing assembly 2 is provided, wherein a pressure plate and a rotating handle are provided on the pressing assembly, and the rotating handle can drive the pressure plate to move downward so as to contact the top of the movable inner column 12, thereby driving the movable inner column 12 to move downward to extrude the metal rod 4, wherein the pressing assembly 2 includes a fixed base plate, a support column is connected to the fixed base plate, a cantilever is connected to the support column, and the pressure plate is slidably connected to the cantilever. In the initial state, a large gap is left between the pressure plate and the ceramic plate 5, thereby facilitating the placement of the metal rod 4.

[0035] Embodiment 2: like Figure 1 ,2 As shown, different from the embodiment 1, the movable support assembly 3 in this embodiment includes a chassis 31, the size of the chassis 31 is larger than the size of the ceramic plate 5, and a plurality of roller units 311 are arranged on the side of the chassis 31 close to the ceramic plate 5. The roller units 311 arranged on the chassis 31 can rotate flexibly, so when the ceramic plate 5 is placed on the chassis 31, it can abut against the roller units 311, so that the ceramic plate 5 can be displaced relative to the chassis 31, thereby improving the placement flexibility of the ceramic plate 5.

[0036] like Figure 1 As shown, the movable support includes a protective jig plate 32, which is engaged with the ceramic plate 5, and a pick-up notch 321 is provided on the edge of the protective jig plate 32. The movable support includes a protective jig plate 32, and after the ceramic plate 5 is connected through the protective jig plate 32, the protective jig plate 32 is placed on the chassis 31, thereby forming a protective effect on the ceramic plate 5. In addition, a pick-up notch 321 is provided on the protective jig plate 32, so as to improve the convenience of picking up and placing the ceramic plate.

[0037] The assembly and working process of the pressing device for assembling the metal rod and the ceramic disk in this embodiment are as follows: in this embodiment, the ceramic disk 5 is connected to a protective jig plate 32, wherein a vertical plate is arranged at the edge of the protective jig plate 32, and a snap connection is formed between the protective jig plate 32 and the ceramic disk 5 through the vertical plate, and a picking and placing notch 321 is arranged at the edge of the protective jig plate 32, wherein the picking and placing notch 321 is a notch portion arranged on the protective jig plate 32 and its vertical plate. By setting the picking and placing notch 321, a part of the ceramic disk 5 that is not supported by the protective jig plate 32 can be made, and the staff can complete the picking and placing operation of the ceramic disk 5 through this.

[0038] Furthermore, in the present embodiment, a chassis 31 is further provided below the protective jig plate 32, wherein a plurality of roller units 311 are provided on the chassis 31, wherein in the present embodiment, the roller unit 311 is a bull's eye universal bearing, and when the protective jig plate 32 is placed on the chassis 31, the protective jig plate 32 abuts against the roller unit 311, thereby forming a supporting effect on the protective jig plate 32, and at the same time, the protective jig plate 32 can move on the chassis 31, aligning the guide column 1 on the ceramic disk 5 with the pressing assembly 2, thereby improving the placement flexibility of the ceramic disk 5 and avoiding frequent movement of the pressing assembly 2, and due to the flexible rotation characteristics of the roller unit 311, the ceramic disk 5 can be flexibly moved.

[0039] The guide column 1 includes a fixed outer column 11 and a movable inner column 12, wherein the fixed outer column 11 sleeves the movable inner column 12 inside, so that the movable inner column 12 can slide up and down relative to the guide outer column. Furthermore, in this embodiment, a pressure block 121 is provided on the movable inner column 12, and a top block 111 is provided on the fixed outer column 11, wherein the pressure block 121 is located above the top block 111, and an elastic member 13 is provided between the pressure block 121 and the top block 111. In this embodiment, the elastic member 13 is a spring sleeved on the movable inner column 12. When the movable inner column 12 moves relative to the fixed outer column 11, the pressure block 121 will squeeze the elastic member 13 downward, thereby causing the elastic member 13 to contract, thereby extending the ejector pin under the movable inner column 12. In actual application, the fixed outer column 11 is abutted against the ceramic disk 5, and the positioning opening 15 on the fixed outer column 11 is aligned with the metal rod 4. During the downward extrusion action of the movable inner column 12, the fixed outer column 11 always remains fixed, so the ejector pin on the movable inner column 12 can squeeze the metal rod 4 into the connecting hole 51.

[0040] Furthermore, in the present embodiment, a convex ring 41 is provided on the metal rod 4, wherein the cross-sectional dimension of the convex ring 41 is larger than the cross-sectional dimension of the metal rod 4, and the cross-sectional dimension of the convex ring 41 is slightly larger than the hole dimension of the connecting hole 51. Therefore, when the metal rod 4 is placed on the connecting hole 51, the convex ring 41 abuts against the hole position of the connecting hole 51, ensuring that the metal rod 4 does not directly fall into the connecting hole 51. At the same time, the convex ring 41 is arranged in the middle position of the metal rod 4, so that when the metal rod 4 is aligned with the connecting hole 51, the area of ​​the metal rod 4 in the lower half of the convex ring 41 can enter the connecting hole 51, forming a preliminary positioning effect. Subsequently, under the extrusion of the movable inner column 12, the convex ring 41 of the metal rod 4 is pressed into the connecting hole 51. Since the metal rod 4 is made of metal and has good deformation characteristics, the deformation of the metal rod 4 generates an interference connection between the convex ring 41 and the connecting hole 51, thereby maintaining the connection stability between the metal rod 4 and the connecting hole 51.

[0041] In the present application, a pressing assembly 2 is provided, wherein a pressure plate and a rotating handle are provided on the pressing assembly, and the rotating handle can drive the pressure plate to move downward so as to contact the top of the movable inner column 12, thereby driving the movable inner column 12 to move downward to extrude the metal rod 4, wherein the pressing assembly 2 includes a fixed base plate, a support column is connected to the fixed base plate, a cantilever is connected to the support column, and the pressure plate is slidably connected to the cantilever. In the initial state, a large gap is left between the pressure plate and the ceramic plate 5, thereby facilitating the placement of the metal rod 4.

[0042] Embodiment 3: like Figure 4As shown, different from the embodiment 1, in this embodiment, a vacuum suction pen 6 is used to adsorb the metal rod 4, and a suction opening 61 is provided on the vacuum suction pen 6, and a convex ring 41 is provided in the middle of the metal rod 4. When the vacuum suction pen 6 adsorbs the metal rod 4, the convex ring 41 abuts against the adsorption opening 61. The vacuum suction pen 6 can generate a vacuum environment, thereby generating an adsorption force on the metal rod 4, which is convenient for the installation operation of the metal rod 4. The size of the adsorption opening 61 corresponds to the size of the metal rod 4, and the size of the adsorption opening 61 is smaller than the size of the convex ring 41 on the metal rod 4, so that when the vacuum suction pen 6 adsorbs the metal rod 4, it can be limited by the convex ring 41 to improve the stability of adsorption, and at the same time control the adsorption amount, so that part of the metal rod 4 is exposed, so as to facilitate the docking of the connection hole 51.

[0043] The assembly and working process of the pressing device for assembling the metal rod and the ceramic disk in this embodiment are as follows: In this embodiment, the metal rod 4 is adsorbed by the vacuum suction pen 6, wherein the vacuum suction pen 6 can generate a vacuum environment, thereby generating an adsorption force on the metal rod 4, wherein the vacuum suction pen 6 is provided with an adsorption opening 61, wherein the adsorption opening 61 is provided at the tail of the vacuum suction pen 6, and the size of the adsorption opening 61 corresponds to the size of the metal rod 4, and the size of the adsorption opening 61 is smaller than the size of the convex ring 41 on the metal rod 4. Since the convex ring 41 on the metal rod 4 is provided at the middle position of the metal rod 4, the adsorption opening 61 can be connected to the metal rod 4 located above the convex ring 41 during the adsorption of the metal rod 4, and the convex ring 41 is abutted against the orifice position of the adsorption opening 61, thereby maintaining the connection stability between the metal rod 4 and the vacuum suction pen 6, while keeping a partial area of ​​the metal rod 4 exposed outside the adsorption opening 61, so that the metal rod 4 in the lower half of the convex ring 41 can be preliminarily engaged with the connecting hole 51, thereby improving the installation efficiency.

[0044] The ceramic disk 5 is connected to a protective jig plate 32, wherein a vertical plate is provided at the edge of the protective jig plate 32, and a snap-fit ​​connection is formed between the protective jig plate 32 and the ceramic disk 5 through the vertical plate, and a pick-and-place notch 321 is provided at the edge of the protective jig plate 32, wherein the pick-and-place notch 321 is a notch portion provided on the protective jig plate 32 and its vertical plate. By providing the pick-and-place notch 321, a portion of the ceramic disk 5 that is not supported by the protective jig plate 32 can be left, and the staff can complete the pick-and-place operation of the ceramic disk 5 through this portion.

[0045] Furthermore, in the present embodiment, a chassis 31 is further provided below the protective jig plate 32, wherein a plurality of roller units 311 are provided on the chassis 31, wherein in the present embodiment, the roller unit 311 is a bull's eye universal bearing, and when the protective jig plate 32 is placed on the chassis 31, the protective jig plate 32 abuts against the roller unit 311, thereby forming a supporting effect on the protective jig plate 32, and at the same time, the protective jig plate 32 can move on the chassis 31, aligning the guide column 1 on the ceramic disk 5 with the pressing assembly 2, thereby improving the placement flexibility of the ceramic disk 5 and avoiding frequent movement of the pressing assembly 2, and due to the flexible rotation characteristics of the roller unit 311, the ceramic disk 5 can be flexibly moved.

[0046] The guide column 1 includes a fixed outer column 11 and a movable inner column 12, wherein the fixed outer column 11 sleeves the movable inner column 12 inside, so that the movable inner column 12 can slide up and down relative to the guide outer column. Furthermore, in this embodiment, a pressure block 121 is provided on the movable inner column 12, and a top block 111 is provided on the fixed outer column 11, wherein the pressure block 121 is located above the top block 111, and an elastic member 13 is provided between the pressure block 121 and the top block 111. In this embodiment, the elastic member 13 is a spring sleeved on the movable inner column 12. When the movable inner column 12 moves relative to the fixed outer column 11, the pressure block 121 will squeeze the elastic member 13 downward, thereby causing the elastic member 13 to contract, thereby extending the ejector pin under the movable inner column 12. In actual application, the fixed outer column 11 is abutted against the ceramic disk 5, and the positioning opening 15 on the fixed outer column 11 is aligned with the metal rod 4. During the downward extrusion action of the movable inner column 12, the fixed outer column 11 always remains fixed, so the ejector pin on the movable inner column 12 can squeeze the metal rod 4 into the connecting hole 51.

[0047] Furthermore, in the present embodiment, a convex ring 41 is provided on the metal rod 4, wherein the cross-sectional dimension of the convex ring 41 is larger than the cross-sectional dimension of the metal rod 4, and the cross-sectional dimension of the convex ring 41 is slightly larger than the hole dimension of the connecting hole 51. Therefore, when the metal rod 4 is placed on the connecting hole 51, the convex ring 41 abuts against the hole position of the connecting hole 51, ensuring that the metal rod 4 does not directly fall into the connecting hole 51. At the same time, the convex ring 41 is arranged in the middle position of the metal rod 4, so that when the metal rod 4 is aligned with the connecting hole 51, the area of ​​the metal rod 4 in the lower half of the convex ring 41 can enter the connecting hole 51, forming a preliminary positioning effect. Subsequently, under the extrusion of the movable inner column 12, the convex ring 41 of the metal rod 4 is pressed into the connecting hole 51. Since the metal rod 4 is made of metal and has good deformation characteristics, the deformation of the metal rod 4 generates an interference connection between the convex ring 41 and the connecting hole 51, thereby maintaining the connection stability between the metal rod 4 and the connecting hole 51.

[0048] In the present application, a pressing assembly 2 is provided, wherein a pressure plate and a rotating handle are provided on the pressing assembly, and the rotating handle can drive the pressure plate to move downward so as to contact the top of the movable inner column 12, thereby driving the movable inner column 12 to move downward to extrude the metal rod 4, wherein the pressing assembly 2 includes a fixed base plate, a support column is connected to the fixed base plate, a cantilever is connected to the support column, and the pressure plate is slidably connected to the cantilever. In the initial state, a large gap is left between the pressure plate and the ceramic plate 5, thereby facilitating the placement of the metal rod 4.

[0049] Embodiment 4: like Figure 5 , 6 As shown, different from the embodiment 1, in this embodiment, a plurality of telescopic columns 312 are arranged on the chassis 31, and each telescopic column 312 is arranged on the area of ​​the chassis 31 except the roller unit 311. A driving unit 313 is connected below the chassis 31, and the driving unit 313 can drive the telescopic columns 312 to move close to the ceramic plate 5, and stop moving when the telescopic columns 312 abut against the ceramic plate 5. In order to ensure the connection accuracy between the ceramic plate 5 and the metal rod 4, it is necessary to control the stability of the ceramic plate 5 in the process of the pressing assembly 2 squeezing the metal rod 4. A telescopic column 312 is also provided on the chassis 31, wherein the telescopic column 312 can move up and down relative to the chassis 31, and the telescopic column 312 is provided on the remaining area of ​​the chassis 31 outside the roller unit 311, and the telescopic movement of the telescopic column 312 is controlled by a driving unit 313, wherein the driving unit 313 can be an electromagnetic disk 314, and the telescopic column 312 is set as a magnetic column 315 with a magnetic pole, and the electromagnetic disk 314 is energized to generate a repulsive force, driving the magnetic column 315 to rise, and after power is cut off, the magnetic column 315 descends by its own gravity and the attraction to the electromagnetic disk 314; this method can make the magnetic column 315 that touches the magnetic column 315 fall. The telescopic column 312 of the ceramic disk 5 stops rising, while the telescopic column 312 that does not touch the ceramic disk 5 continues rising. Since there are multiple telescopic columns 312, they can adapt to the placement position of the ceramic disk 5 and form a limiting edge structure at the edge of the ceramic disk 5 to prevent the ceramic disk 5 from making radial movement. At the same time, since the telescopic column 312 always maintains an abutting relationship with the ceramic disk 5 after abutting the ceramic disk 5, the ceramic disk 5 is prevented from only contacting the ground with the roller unit 311 that can rotate flexibly, thereby increasing the static friction of the ceramic disk 5, and further preventing the ceramic disk 5 from making radial movement and improving stability.

[0050] This embodiment discloses a pressing method, which includes the following steps: S1. A connecting hole 51 is provided on the ceramic plate 5, and a convex ring 41 is provided on the metal rod 4; the metal rod 4 is placed on the connecting hole 51 of the ceramic plate 5, and the convex ring 41 abuts against the opening of the connecting hole 51; S2. Place the guide column 1 on the metal rod 4, fix the outer column 11 against the ceramic disk 5, and the movable inner column 12 against the metal rod 4; S3. Move the ceramic disk 5 on the movable support assembly 3, align the guide column 1 with the pressing assembly 2, start the pressing assembly 2, press the movable inner column 12 to drive the metal rod 4 to embed into the connecting hole 51, and the convex ring 41 and the connecting hole 51 have an interference fit.

[0051] 10. In step S3, after the guide column 1 is aligned with the pressing assembly 2, the driving unit 313 is started, the telescopic column 312 rises, and the telescopic column 312 stops rising after abutting the ceramic plate 5. The telescopic column 312 that does not abut the ceramic plate 5 continues to rise. When the edge of the ceramic plate 5 abuts against a number of telescopic columns 312, the pressing assembly 2 is started. When the ceramic plate 5 and the pressing assembly 2 are in position, the telescopic column 312 is driven to rise by the driving unit 313, a part of the lifting column abuts the bottom of the ceramic plate 5, and a part of the ceramic plate 5 continues to move, so that the bottom of the ceramic plate 5 contacts a large number of ends of the telescopic column 312, increasing the friction to avoid radial displacement. The ceramic plate 5 is also limited in the radial direction by the side of the telescopic column 312, thereby ensuring the stability of the ceramic plate 5.

[0052] Embodiment 5: like Figure 7 As shown, different from Example 4, in this embodiment, the telescopic column 312 can also be set as an elastic plunger 316, and the driving unit 313 can be set as a disc-shaped structure to drive all the telescopic columns 312 to rise synchronously, and the telescopic columns 312 are compressed when they hit the ceramic disk 5 / protective fixture plate 32.

Claims

1. A pressing device for assembling a metal rod and a ceramic disc, characterized in that: include: The guide column (1) comprises a fixed outer column (11) abutting against the ceramic disk (5) and a movable inner column (12) abutting against the metal rod (4), wherein the movable inner column (12) is slidably connected inside the fixed outer column (11); The pressing assembly (2) abuts against the movable inner column (12), driving the movable inner column (12) to squeeze the metal rod (4) and fit it onto the ceramic plate (5). A movable support assembly (3) is arranged below the ceramic plate (5), and the ceramic plate (5) can move on the movable support assembly (3).

2. A pressing device for assembling a metal rod and a ceramic disc according to claim 1, characterized in that: The movable inner column (12) includes a pressing block (121), the fixed outer column (11) includes a top block (111), and an elastic member (13) is provided between the top block (111) and the pressing block (121).

3. A pressing device for assembling a metal rod and a ceramic disk according to claim 2, characterized in that: The top of the fixed outer column (11) is connected to a limiting block (14), and the side of the pressing block (121) away from the elastic member (13) abuts against the limiting block (14).

4. A pressing device for assembling a metal rod and a ceramic disc according to claim 1, characterized in that: The fixed outer column (11) includes a positioning opening (15) arranged on one side close to the metal rod (4); when the fixed outer column (11) abuts against the ceramic plate (5), the metal rod (4) loosely fits the positioning opening (15).

5. A pressing device for assembling a metal rod and a ceramic disk according to any one of claims 1 to 4, characterized in that: The movable support assembly (3) comprises a chassis (31), the size of the chassis (31) is larger than the size of the ceramic plate (5), and a plurality of roller units (311) are arranged on a side of the chassis (31) close to the ceramic plate (5).

6. A pressing device for assembling a metal rod and a ceramic disk according to claim 5, characterized in that: The movable support member comprises a protective jig plate (32), the protective jig plate (32) is snap-fitted and connected to the ceramic plate (5), and a pick-and-place notch (321) is provided on the edge of the protective jig plate (32).

7. A pressing device for assembling a metal rod and a ceramic disk according to claim 5, characterized in that: A plurality of telescopic columns (312) are arranged on the chassis (31), and each of the telescopic columns (312) is arranged in an area of ​​the chassis (31) other than the roller unit (311). A driving unit (313) is connected below the chassis (31), and the driving unit (313) can drive the telescopic columns (312) to move closer to the ceramic disk (5), and the telescopic columns (312) stop moving when they abut against the ceramic disk (5).

8. A pressing method, using a pressing device for assembling a metal rod and a ceramic disk as claimed in any one of claims 1 to 7, characterized in that: The following steps are included: S1. A connecting hole (51) is provided on the ceramic plate (5), and a convex ring (41) is provided on the metal rod (4); the metal rod (4) is placed on the connecting hole (51) of the ceramic plate (5), and the convex ring (41) abuts against the opening of the connecting hole (51); S2, placing the guide column (1) on the metal rod (4), the fixed outer column (11) abutting against the ceramic plate (5), and the movable inner column (12) abutting against the metal rod (4); S3, move the ceramic plate (5) on the movable support assembly (3), align the guide column (1) with the pressing assembly (2), start the pressing assembly (2) to press the movable inner column (12) to drive the metal rod (4) to embed into the connecting hole (51), and the convex ring (41) and the connecting hole (51) are interference fit.

9. A pressing method according to claim 8, characterized in that: In step S1, a vacuum suction pen (6) is used to suck the metal rod (4), the vacuum suction pen (6) is provided with a suction opening (61), the convex ring (41) is provided in the middle part of the metal rod (4), and when the vacuum suction pen (6) sucks the metal rod (4), the convex ring (41) abuts against the suction opening (61).

10. A lamination method according to claim 8, characterized in that: In step S3, after the guide column (1) is aligned with the pressing assembly (2), the driving unit (313) is started, the telescopic column (312) rises, and the telescopic column (312) stops rising after it abuts against the ceramic disk (5). The telescopic column (312) that does not abut against the ceramic disk (5) continues to rise. When the edge of the ceramic disk (5) abuts against a number of telescopic columns (312), the pressing assembly (2) is started.

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