Feeding device and feeding method for ceramic wafer and copper sheet sintering material piece

Abstract

The invention aims at disclosing a feeding device and feeding method for ceramic wafer and copper plate sintering material pieces, and relates to the technical field of ceramic wafer and copper plate sintering. The feeding device comprises a material piece supply assembly, a material piece transferring assembly and a material piece feeding assembly; the first lifting assembly drives the lifting supply line to be flush with the lower supply line or the upper supply line; the supporting column drives the carrier to ascend and descend in a stepping mode through the lifting supply line. The suction cup assembly comprises a mounting plate, four negative pressure suction heads, a first lifting rod and a second lifting rod. The four negative-pressure suction heads synchronously suck the four top corners of the material piece, and the first lifting rod and the second lifting rod synchronously descend and enable the middle of the material piece to slightly protrude downwards, so that the technical effect is that under the condition that the four negative-pressure suction heads synchronously suck the four top corners of the material piece, the four negative-pressure suction heads synchronously suck the four top corners of the material piece; and the first lifting rod and the second lifting rod respectively press the middle parts of the two sides of the material sheets, so that the material sheet on the uppermost layer is slightly convex and deformed, and the material sheet on the uppermost layer is separated from the adjacent material sheet below the material sheet.

Description

Technical Field

[0001] This invention relates to the field of ceramic sheet and copper plate sintering technology, and in particular to a feeding device and method for sintering ceramic sheets and copper sheets. Background Technology

[0002] In high-power electronic devices (such as IGBTs, power MOSFETs, automotive inverters, and photovoltaic inverters), the chips generate enormous heat, but at the same time, they must be electrically insulated from the heat sink and the casing. Sintering ceramic sheets and copper plates into a composite material can simultaneously possess excellent electrical insulation, high thermal conductivity, and high mechanical reliability. Sintering ceramic sheets and copper plates together can form a composite plate that meets the heat dissipation requirements of high-power electronic devices. After sintering, the composite plate needs to be cut into a predetermined shape. The cut composite plate needs to be cleaned to remove impurities from its surface. How to supply the composite plate piece by piece to the cleaning equipment is one of the technical problems that needs to be solved.

[0003] Therefore, it is necessary to develop a feeding device and method for sintering ceramic and copper sheets. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the purpose of this invention is to disclose a feeding device and feeding method for sintered ceramic and copper sheets.

[0005] To achieve the first objective mentioned above, the present invention provides a feeding device for sintered ceramic and copper sheets.

[0006] To achieve the second objective mentioned above, this invention provides a method for feeding ceramic and copper sintered material sheets.

[0007] To achieve the first objective mentioned above, the present invention provides a feeding device for sintering ceramic and copper sheets, comprising a material sheet supply assembly, a material sheet transfer assembly, and a material sheet loading assembly; The material sheet supply assembly includes a lower supply line, an upper supply line, and a secondary lifting assembly. The secondary lifting assembly includes a first lifting assembly, a lifting supply line, and a second lifting assembly. The first lifting assembly drives the lifting supply line to be flush with the lower supply line or the upper supply line. The second lifting assembly includes a lead screw and a lifting plate driven by the lead screw. Several support columns are provided above the lifting plate. The support columns drive a carrier located on the lifting supply line to lift in a step-by-step manner through the lifting supply line. Several material sheets are stacked inside the carrier. The material sheet transfer assembly includes a robotic arm assembly and a suction cup assembly driven by the robotic arm assembly. The suction cup assembly includes a mounting plate, four negative pressure suction heads arranged in a rectangle below the mounting plate, and a first lifting rod and a second lifting rod arranged below the mounting plate. The four negative pressure suction heads simultaneously adsorb the four apex corners of the material sheet, and the first lifting rod and the second lifting rod simultaneously descend and make the middle of the material sheet bulge downwards slightly; The robotic arm component drives the suction cup component to pick up material sheets one by one from the carrier and transfer the material sheets to the material sheet loading component.

[0008] Preferably, the first lifting assembly includes a first vertical wall panel, a lifting slide rail, a second vertical wall panel, a first horizontal plate, and a second horizontal plate; The lifting slide rail is installed on the first vertical wall panel, the second vertical wall panel is installed on the lifting slide rail via a slider, and both the first horizontal plate and the second horizontal plate are installed on the second vertical wall panel. The lifting supply line is located on the first horizontal plate, and the lead screw is located on the second horizontal plate.

[0009] Preferably, the bottom of the carrier has several small holes; The lifting supply line includes a plurality of rotating rollers, with gaps between adjacent rotating rollers, the gaps allowing the support column to pass through; The top of the support column is provided with a stepped portion, which abuts against the bottom of the small hole.

[0010] Preferably, the lower supply line supplies a carrier fully loaded with material sheets to the lifting supply line, and the lifting supply line supplies an empty carrier to the upper supply line.

[0011] Preferably, two side-by-side vehicles are supplied to the lifting supply line simultaneously.

[0012] Preferably, the two suction cup assemblies arranged side by side synchronously pick up material sheets from the two carriers.

[0013] Preferably, the first lifting rod is located between the two negative pressure suction heads on the same side; The second lifting rod and the first lifting rod are arranged symmetrically.

[0014] Preferably, the first cylinder drives the first lifting rod to move up and down, and the second cylinder drives the second lifting rod to move up and down.

[0015] Preferably, negative pressure air ports are provided at the ends of the first lifting rod and the second lifting rod.

[0016] Based on the same inventive principle, and to achieve the second inventive objective mentioned above, this invention provides a method for feeding ceramic and copper sintered material sheets, characterized by employing the feeding device for ceramic and copper sintered material sheets described in the first invention, comprising the following steps: A carrier that supplies fully loaded material sheets to the lifting supply line via the lower supply line; The first lifting assembly drives the lifting supply line to rise to be level with the upper supply line, and the second lifting assembly lifts the vehicle step by step. The robotic arm component drives the suction cup component to pick up material sheets one by one from the carrier. The four negative pressure suction heads of the suction cup component simultaneously adsorb the four top corners of the material sheet. The first lifting rod and the second lifting rod descend simultaneously and make the middle of the material sheet bulge downwards slightly, and the uppermost material sheet separates from the material sheet adjacent to it below. The robotic arm component transfers the material sheet to the material sheet feeding component, which then conveys the material sheet to the cleaning equipment.

[0017] Compared with the prior art, the technical effects of the present invention are as follows: The carrier of this invention enters the lifting supply line from the lower supply line, and is raised to the upper supply line by the lifting supply line. The second lifting component raises the carrier step by step, and the suction cup component picks up material sheets one by one from the carrier. The material sheets are then transferred to the material sheet loading component by the robotic arm component. Finally, the material sheet loading component transports the material sheets to the cleaning equipment. The overall structure of the loading device is compact, realizing the supply of stacked material sheets one by one to the material sheet loading component. When the four negative pressure suction heads simultaneously adsorb the four corners of the material sheets, the first lifting rod and the second lifting rod press down on the middle of both sides of the material sheets, causing the uppermost material sheet to be slightly deformed, separating the uppermost material sheet from the material sheet below it, and preventing the suction of multiple material sheets at one time. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the feeding device of the present invention.

[0020] Figure 2 This is a three-dimensional structural diagram of the suction cup assembly of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the two-stage lifting component of the present invention.

[0022] Figure 4 It is a schematic three-dimensional structure diagram of the second lifting component of the present invention.

[0023] Figure 5 It is a schematic diagram of the micro convex deformation of the material sheet of the present invention.

[0024] Figure 6 It is a schematic flow diagram of the feeding method of the sintered material sheet of the ceramic sheet and the copper sheet of the present invention.

[0025] Among them, 1. Material sheet supply component; 11. Lower supply line; 12. Upper supply line; 13. Secondary lifting component; 131. First lifting component; 1311. First vertical plate wall; 1312. Lifting slide rail; 1313. Second vertical plate wall; 1314. First horizontal plate; 1315. Second horizontal plate; 132. Lifting supply line; 1321. Rotating roller; 1322. Gap; 133. Second lifting component; 1331. Screw rod; 1332. Lifting plate; 1333. Support column; 1334. Step part; 2. Material sheet transfer component; 21. Manipulator component; 22. Suction cup component; 221. Mounting plate; 222. Negative pressure suction head; 223. First lifting rod; 224. Second lifting rod; 225. First cylinder; 226. Second cylinder; 3. Material sheet feeding component; 31. Roller; 4. Carrier; 41. Small hole; 5. Material sheet. Specific embodiments

[0026] The present invention will be described in detail below in conjunction with the embodiments shown in the drawings. However, it should be noted that these embodiments are not limitations on the present invention. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. Embodiment 1

[0028] Refer Figures 1 to 5 As shown, this embodiment discloses a specific implementation manner of a feeding device (hereinafter referred to as "feeding device") for sintered material sheets of ceramic sheets and copper sheets.

[0029] The feeding device for sintered ceramic and copper sheets, refer to Figures 1 to 5 As shown, the assembly includes a material sheet supply component 1, a material sheet transfer component 2, and a material sheet loading component 3. The material sheet supply component 1 includes a lower supply line 11, an upper supply line 12, and a secondary lifting component 13. The secondary lifting component 13 includes a first lifting component 131, a lifting supply line 132, and a second lifting component 133. The first lifting component 131 drives the lifting supply line 132 to be flush with the lower supply line 11 or the upper supply line 12. The second lifting component 133 includes a lead screw 1331 and a lifting plate 1332 driven by the lead screw 1331. Several support columns 1333 are provided above the lifting plate 1332. The support columns 1333 drive the carrier 4 located on the lifting supply line 132 in a step-like lifting manner through the lifting supply line 132. The carrier 4 contains a plurality of material sheets 5 stacked inside; the material sheet transfer assembly 2 includes a robotic arm assembly 21 and a suction cup assembly 22 driven by the robotic arm assembly 21. The suction cup assembly 22 includes a mounting plate 221, four negative pressure suction heads 222 arranged in a rectangle below the mounting plate 221, and a first lifting rod 223 and a second lifting rod 224 arranged below the mounting plate 221. The four negative pressure suction heads 222 simultaneously adsorb the four apex corners of the material sheet 5, and the first lifting rod 223 and the second lifting rod 224 simultaneously descend and make the middle part of the material sheet 5 slightly convex downward; the robotic arm assembly 21 drives the suction cup assembly 22 to pick up the material sheets 5 one by one from the carrier 4 and transfer the material sheets 5 to the material sheet loading assembly 3.

[0030] Material sheet 5 is a composite plate made of sintered ceramic and copper sheets. After sintering, the composite plate is cut and stacked in carrier 4. Because the composite plate is thin and adjacent composite plates easily adhere to each other, in order to achieve the picking up of material sheet 5 piece by piece, in a preferred embodiment, see... Figure 2 The first lifting rod 223 is located between the two negative pressure suction heads 222 on the same side. The second lifting rod 224 is symmetrically arranged with the first lifting rod 223. That is, the second lifting rod 224 and the first lifting rod 223 press down on the middle of the two sides of the material sheet 5, causing the uppermost material sheet 5 to slightly convexly deform, thus separating the uppermost material sheet 5 from the adjacent material sheet 5 below it, preventing the suction of multiple layers of material sheets 5 at one time. Specifically, see Figure 2 and Figure 5The first cylinder 225 drives the first lifting rod 223 to rise and fall, and the second cylinder 226 drives the second lifting rod 224 to rise and fall. The ends of the first lifting rod 223 and the second lifting rod 224 are respectively provided with negative pressure air ports. That is to say, the first lifting rod 223 and the second lifting rod 224 can first synchronously adsorb the material sheet 5 with the four negative pressure suction heads 222. At the moment when the suction cup assembly 22 lifts the uppermost material sheet 5, the first cylinder 225 and the second cylinder 226 synchronously drive the first lifting rod 223 and the second lifting rod 224 to descend, so that the uppermost material sheet 5 separates from the material sheet 5 adjacent to it below due to slight deformation. In order to prevent the material sheet 5 from falling, the first lifting rod 223 and the second lifting rod 224 maintain the negative pressure adsorption state while descending.

[0031] See Figure 1 , Figure 3 and Figure 4 The lower supply line 11 supplies a carrier 4 fully loaded with material sheets 5 to the lifting supply line 132. The first lifting component 131 drives the lifting supply line 132 to be flush with the upper supply line 12. The second lifting component 133 drives the carrier 4 located on the lifting supply line 132 to be lifted step by step. The suction cup component 22 picks up the material sheets 5 one by one from the carrier 4 and transfers the material sheets 5 to the material sheet loading component 3. After all the material sheets in the carrier 4 have been picked up, the lifting supply line 132 supplies an empty carrier to the upper supply line 12. In order to improve the supply efficiency of material sheets 5, two parallel carriers 4 are supplied to the lifting supply line 132 simultaneously, and the two parallel suction cup components 22 pick up the material sheets 5 simultaneously from the two carriers 4.

[0032] See Figures 1 to 4, the working principle of the secondary lifting component 13 is as follows: The first lifting component 131 includes a first vertical plate wall 1311, a lifting slide rail 1312, a second vertical plate wall 1313, a first horizontal plate 1314, and a second horizontal plate 1315. The lifting slide rail 1312 is installed on the first vertical plate wall 1311. The second vertical plate wall 1313 is installed on the lifting slide rail 1312 through a slider. The first horizontal plate 1314 and the second horizontal plate 1315 are both installed on the second vertical plate wall 1313. The lifting supply line 132 is disposed on the first horizontal plate 1314, and the screw rod 1331 is disposed on the second horizontal plate 1315. The power component drives the second vertical plate wall 1313 to lift along the lifting slide rail 1312. The second vertical plate wall 1313 drives the first horizontal plate 1314 and the second horizontal plate 1315 to lift. The screw rod 1331 drives the lifting plate 1332 to be lifted step by step. For each lift of a step pitch, it rises by the thickness of one material sheet. To ensure that the support column 1333 stably supports the carrier 4, there are a number of small holes 41 at the bottom of the carrier 4. The lifting supply line 132 includes a number of rotating rollers 1321, and there is a gap 1322 between adjacent rotating rollers 1321. The gap 1322 allows the support column 1333 to pass through. A stepped portion 1334 is provided at the top of the support column 1333, and the stepped portion 1334 abuts against the bottom of the small hole 41. Embodiment 2

[0033] Refer Figure 6 As shown, this embodiment discloses a specific implementation manner of a method for loading ceramic and copper sintered material sheets.

[0034] A method for loading ceramic and copper sintered material sheets, refer Figure 6 As shown, using the loading device for ceramic and copper sintered material sheets described in Embodiment 1, it includes the following steps: Step S1: Supply the carrier full of material sheets to the lifting supply line through the lower supply line; specifically, the power component drives the lifting supply line 132 to descend to be flush with the lower supply line 11, and the lower supply line 11 supplies two并排 carriers 4 full of material sheets 5 to the lifting supply line 132.

[0035] Step S2: The first lifting component drives the lifting supply line to rise to be flush with the upper supply line, and the second lifting component lifts the carrier step by step; specifically, two并排 carriers 4 full of material sheets 5 are lifted to a predetermined height.

[0036] Step S3: The robotic arm assembly drives the suction cup assembly to pick up material sheets one by one from the carrier. The four negative pressure suction heads of the suction cup assembly simultaneously adsorb the four top corners of the material sheets. The first lifting rod and the second lifting rod descend simultaneously and make the middle of the material sheet slightly convex downwards, separating the uppermost material sheet from the material sheet below it. Specifically, the first lifting rod 223 is located between the two negative pressure suction heads 222 on the same side. The second lifting rod 224 and the first lifting rod 223 are symmetrically arranged, that is, the second lifting rod 224 and the first lifting rod 223 press down on the middle of the two sides of the material sheet 5 respectively, causing the uppermost material sheet 5 to slightly convexly deform, separating the uppermost material sheet 5 from the material sheet 5 below it, and preventing the suction of multiple layers of material sheets 5 at one time.

[0037] Step S4: The robotic arm assembly transfers the material sheet to the material sheet feeding assembly, which then transports the material sheet to the cleaning equipment. Specifically, the robotic arm assembly has multiple degrees of freedom. The robotic arm assembly picks up the material sheet 5 one by one through the suction cup assembly and transfers it to the material sheet feeding assembly 3. The material sheet feeding assembly 3 is composed of several small plastic rollers 31. The surface hardness of the plastic rollers 31 is less than that of the material sheet 5, thus avoiding scratching the material sheet 5 while supplying it to the cleaning equipment.

[0038] Example 2 uses the feeding device for sintered ceramic and copper sheets described in Example 1, which is the same as that in Example 1. Please refer to Example 1 for details, which will not be repeated here.

Claims

1. A feeding device for sintered ceramic and copper sheets, characterized in that, This includes a material sheet supply assembly, a material sheet transfer assembly, and a material sheet loading assembly; The material sheet supply assembly includes a lower supply line, an upper supply line, and a secondary lifting assembly. The secondary lifting assembly includes a first lifting assembly, a lifting supply line, and a second lifting assembly. The first lifting assembly drives the lifting supply line to be flush with the lower supply line or the upper supply line. The second lifting assembly includes a lead screw and a lifting plate driven by the lead screw. Several support columns are provided above the lifting plate. The support columns drive a carrier located on the lifting supply line to lift in a step-by-step manner through the lifting supply line. Several material sheets are stacked inside the carrier. The material sheet transfer assembly includes a robotic arm assembly and a suction cup assembly driven by the robotic arm assembly. The suction cup assembly includes a mounting plate, four negative pressure suction heads arranged in a rectangle below the mounting plate, and a first lifting rod and a second lifting rod arranged below the mounting plate. The four negative pressure suction heads simultaneously adsorb the four apex corners of the material sheet, and the first lifting rod and the second lifting rod simultaneously descend and make the middle of the material sheet bulge downwards slightly; The robotic arm component drives the suction cup component to pick up material sheets one by one from the carrier and transfer the material sheets to the material sheet loading component.

2. The feeding device for ceramic and copper sintered material sheets as described in claim 1, characterized in that, The first lifting assembly includes a first vertical wall panel, a lifting slide rail, a second vertical wall panel, a first horizontal plate, and a second horizontal plate; The lifting slide rail is installed on the first vertical wall panel, the second vertical wall panel is installed on the lifting slide rail via a slider, and both the first horizontal plate and the second horizontal plate are installed on the second vertical wall panel. The lifting supply line is located on the first horizontal plate, and the lead screw is located on the second horizontal plate.

3. The feeding device for ceramic and copper sintered material sheets as described in claim 2, characterized in that, The bottom of the vehicle has several small holes; The lifting supply line includes a plurality of rotating rollers, with gaps between adjacent rotating rollers, the gaps allowing the support column to pass through; The top of the support column is provided with a stepped portion, which abuts against the bottom of the small hole.

4. The feeding device for sintered ceramic and copper sheets as described in any one of claims 1-3, characterized in that, The lower supply line supplies a carrier fully loaded with material sheets to the lifting supply line, while the lifting supply line supplies an empty carrier to the upper supply line.

5. The feeding device for ceramic and copper sintered material sheets as described in claim 4, characterized in that, Two side-by-side vehicles are supplied to the lifting supply line simultaneously.

6. The feeding device for ceramic and copper sintered material sheets as described in claim 5, characterized in that, The two side-by-side suction cup assemblies synchronously pick up material sheets from the two carriers.

7. The feeding device for ceramic and copper sintered material sheets as described in claim 6, characterized in that, The first lifting rod is located between the two negative pressure suction heads on the same side; The second lifting rod and the first lifting rod are arranged symmetrically.

8. The feeding device for ceramic and copper sintered material sheets as described in claim 7, characterized in that, The first cylinder drives the first lifting rod to rise and fall, and the second cylinder drives the second lifting rod to rise and fall.

9. The feeding device for ceramic and copper sintered material sheets as described in claim 8, characterized in that, Negative pressure air ports are respectively provided at the ends of the first lifting rod and the second lifting rod.

10. A method for feeding sintered ceramic and copper sheets, characterized in that, The feeding device for sintered ceramic and copper sheets according to any one of claims 1-9 includes the following steps: A carrier that supplies fully loaded material sheets to the lifting supply line via the lower supply line; The first lifting assembly drives the lifting supply line to rise to be level with the upper supply line, and the second lifting assembly lifts the vehicle step by step. The robotic arm component drives the suction cup component to pick up material sheets one by one from the carrier. The four negative pressure suction heads of the suction cup component simultaneously adsorb the four top corners of the material sheet. The first lifting rod and the second lifting rod descend simultaneously and make the middle of the material sheet bulge downwards slightly, and the uppermost material sheet separates from the material sheet adjacent to it below. The robotic arm component transfers the material sheet to the material sheet feeding component, which then conveys the material sheet to the cleaning equipment.

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