A step-by-step cutting device for bonding aluminum strips

Abstract

The present invention relates to the technical field of bonding aluminum strip cutting devices, and specifically to a step-by-step cutting device for bonding aluminum strips. The device comprises an operating table, a curve cutting assembly and an auxiliary fixing assembly. When the cutter of the curve cutting assembly is located inside the middle fixing assembly, the middle fixing assembly is used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly. When the cutter of the curve cutting assembly leaves the middle fixing assembly, the middle fixing assembly moves with the cutter to be arranged adjacent to the end fixing assembly. As the cutting proceeds, the middle fixing assembly can move with the cutter to prevent the end cutting assembly from pulling and deforming the bonding aluminum strip, thereby ensuring efficient cutting of the bonding aluminum strip.

Description

Technical Field

[0001] The invention relates to the technical field of bonding aluminum strip cutting devices, and in particular to a step-by-step cutting device for bonding aluminum strips. Background Art

[0002] Semiconductor packaging refers to the process of processing the tested wafers into independent chips according to the product model and functional requirements. The packaging process is as follows: the wafers from the wafer front-end process are cut into small chips through the dicing process, and then the cut chips are glued to the corresponding islands of the substrate frame, and then the bonding pads of the chips are connected to the corresponding pins of the substrate using ultra-fine metal wires or conductive resins to form the required circuit; then the independent chips are packaged and protected with plastic shells, and a series of operations are required after the plastic packaging. After the packaging is completed, the finished product is tested, usually after inspection, testing and packaging, and finally shipped. Bonding is a technology that directly combines two homogeneous or heterogeneous semiconductor materials with clean and atomically flat surfaces under certain conditions after surface cleaning and activation treatment, and bonds the chips together through van der Waals forces, molecular forces, and even atomic forces.

[0003] A large number of aluminum strips of specific sizes are used in the semiconductor packaging process. The cutting device in the prior art has a relatively simple fixing structure for the bonding aluminum strip. For example, a step-by-step cutting device for bonding aluminum strips for semiconductor packaging with Chinese patent publication number CN216730842U only fixes the bonding aluminum strips through a conveyor roller, which has a poor fixing effect. In addition, when the cutting operation is performed, the cutter cuts perpendicularly to the surface of the aluminum strip, and the force at the cutting point of the bonding aluminum strip is easily generated. Figure 1 The deformation shown affects the use of the aluminum strip; especially when cutting the special-shaped aluminum strip, the travel direction of the cutter changes, which can easily cause the bonded aluminum strip to deform or break, making the operation inconvenient.

[0004] Therefore, the present application provides a step-by-step cutting device for a bonding aluminum strip, which solves the problem of poor fixing and cutting effects of the bonding aluminum strip in the prior art, efficiently cuts and fixes special-shaped bonding aluminum strips, and improves the cutting effect of special-shaped bonding aluminum strips. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a step-by-step cutting device for bonding aluminum strips.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a step-by-step cutting device for bonding aluminum strips, comprising an operating table for supporting the bonding aluminum strips and driving the bonding aluminum strips to move forward;

[0007] A curve cutting assembly is arranged inside the operating table and is used to cut the bonding aluminum strip. The cutting direction of the curve cutting assembly is along the width direction of the bonding aluminum strip.

[0008] An auxiliary fixing assembly is arranged on the upper side of the bonding aluminum strip, and includes two end fixing assemblies and an intermediate fixing assembly. The end fixing assemblies are used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly. When the cutter of the curve cutting assembly is located inside the intermediate fixing assembly, the middle fixing assembly is used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly. When the cutter of the curve cutting assembly leaves the middle fixing assembly, the middle fixing assembly follows the cutter and moves to be arranged adjacent to the end fixing assemblies.

[0009] As an optimization, the end fixing assembly includes two end fixing rollers arranged in contact with the bonding aluminum strip, the axis of the end fixing roller is connected to a first driving motor, and the two end fixing rollers are respectively arranged on both sides of the curve cutting assembly. When the cutting knife of the curve cutting assembly cuts the bonding aluminum strip, the two end fixing rollers tighten the bonding aluminum strips on both sides of the curve cutting assembly in opposite directions.

[0010] As an optimization, an L-shaped support frame is provided on the outer side of the operating table, and the intermediate fixing component is connected to the L-shaped support frame;

[0011] The intermediate fixing assembly includes a telescopic rod connected to the L-shaped support frame, a second drive motor connected to the lower end of the telescopic rod, and a clamping assembly connected to the second drive motor, wherein the clamping assembly is in contact with the bonding aluminum strip.

[0012] As an optimization, the clamping assembly includes a connecting rod connected to the second driving motor, a V-shaped bracket rotatably connected to both ends of the connecting rod, and an auxiliary roller rotatably connected to the V-shaped bracket, and the auxiliary roller is arranged in contact with the bonding aluminum strip;

[0013] The bending part of the V-shaped bracket is connected through a spring shaft. When the telescopic rod is extended, the V-shaped bracket is pressed downward to make the two auxiliary rollers move in a direction away from each other.

[0014] As an optimization, when the cutter enters the intermediate fixing assembly, the length direction of the cutter is arranged parallel to the travel direction of the curved cutting assembly;

[0015] When the cutter leaves the middle fixing assembly, the second driving motor drives the pressing assembly to rotate, so that the axis of the auxiliary roller is perpendicular to the length direction of the curved cutting assembly, and the auxiliary roller follows the cutter to move toward the end fixing assembly.

[0016] As an optimization, the curve cutting assembly includes a cutting track and a cutter with the same shape as the required bonding aluminum strip, the cutting track is located on the lower side of the bonding aluminum strip, the cutter can move along the cutting track, and the length direction of the cutter is perpendicular to the thickness direction of the bonding aluminum strip.

[0017] As an optimization, the length direction of the end fixing roller is arranged along the cutting direction of the bonding aluminum strip.

[0018] The present invention provides a step-by-step cutting device for bonding aluminum strips, which has the following advantages:

[0019] The bonding aluminum strip is cut by a curve cutting assembly. During the cutting process, the bonding aluminum strip at the cutting position is fixed and tightened by an auxiliary fixing assembly to ensure the cutting effect and avoid deformation of the edge of the bonding aluminum strip during the cutting process. As the cutting proceeds, the middle fixing assembly can move with the cutter to avoid deformation of the bonding aluminum strip by the end cutting assembly, thereby ensuring efficient cutting of the bonding aluminum strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the deformation structure of the bonded aluminum strip caused by vertical cutting of the cutter.

[0021] Figure 2 It is an axial schematic diagram of the present invention.

[0022] Figure 3 It is a top view schematic diagram of the present invention.

[0023] Figure 4 It is a schematic diagram of the back axial side of the present invention.

[0024] Figure 5 It is a schematic diagram of the bottom axial side of the present invention.

[0025] Figure 6 It is an axial side schematic diagram of the intermediate fixing assembly of the present invention in the following state.

[0026] Figure 7 It is a schematic front view of the following state of the intermediate fixing component of the present invention.

[0027] Among them, 1. operating table, 2. cutting track, 3. cutting knife, 4. end fixing roller, 5. L-shaped support frame, 6. telescopic rod, 7. second driving motor, 8. connecting rod, 9. V-shaped bracket, 10. auxiliary roller, 11. bonding aluminum strip to be cut. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] like Figure 2-Figure 7 As shown, a step-by-step cutting device for bonding aluminum strips comprises an operating table 1, which is used to support the bonding aluminum strips and drive the bonding aluminum strips to move forward;

[0030] A curve cutting assembly is arranged inside the operating table 1 and is used to cut the bonding aluminum strip. The cutting direction of the curve cutting assembly is along the width direction of the bonding aluminum strip.

[0031] The auxiliary fixing assembly is arranged on the upper side of the bonding aluminum strip, and includes two end fixing assemblies and an intermediate fixing assembly. The end fixing assemblies are used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly. When the cutter 3 of the curve cutting assembly is located inside the intermediate fixing assembly, the middle fixing assembly is used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly. When the cutter 3 of the curve cutting assembly leaves the middle fixing assembly, the middle fixing assembly follows the cutter 3 and moves to be adjacent to the end fixing assemblies.

[0032] according to Figure 2 As shown, the front end of the operating table 1 has the same shape as the bonding aluminum strip 11 to be cut, so that the edge of the bonding aluminum strip 11 to be cut is arranged in close contact with the front end of the operating table 1, and the cutter 3 cuts along the direction of the bonding aluminum strip 11 to be cut. During the cutting process, the bonding aluminum strip 11 to be cut is pressed and tightened by the auxiliary fixing component, so that the cut bonding aluminum strip tends to separate from the bonding aluminum strip as a whole.

[0033] The curve cutting assembly is arranged according to the shape of the required bonding aluminum strip, and comprises a track having the same shape as the required bonding aluminum strip in the length direction and a cutter 3 movable along the track direction.

[0034] like Figure 4 As shown, the end fixing assembly includes two end fixing rollers 4 which are arranged in contact with the bonding aluminum strip, the axis of the end fixing roller 4 is connected to a first driving motor, and the two end fixing rollers 4 are respectively arranged on both sides of the curve cutting assembly. When the cutter 3 of the curve cutting assembly cuts the bonding aluminum strip, the two end fixing rollers 4 tighten the bonding aluminum strips on both sides of the curve cutting assembly in opposite directions.

[0035] The end fixing roller 4 can press the two ends of the bonded aluminum strip 11 to be cut, so as to prevent the bonded aluminum strip 11 to be cut from moving under the force of the cutter 3 during the cutting process, and to prevent the bonded aluminum strip 11 to be cut from being displaced. At the same time, the two end fixing components rotate in opposite directions, so that the cutting position is in a tensioned state, so as to prevent the bonded aluminum strip 11 to be cut from being deformed during the cutting process, and to keep the edge of the bonded aluminum strip 11 to be cut flat.

[0036] like Figure 4 As shown, an L-shaped support frame 5 is provided on the outer side of the operating table 1, and the intermediate fixing component is connected to the L-shaped support frame 5;

[0037] The intermediate fixing assembly includes a telescopic rod 6 connected to the L-shaped support frame 5, a second drive motor 7 connected to the lower end of the telescopic rod 6, and a clamping assembly connected to the second drive motor 7, wherein the clamping assembly is in contact with the bonding aluminum strip.

[0038] The telescopic rod 6 is vertically arranged, and the second driving motor 7 is coaxially arranged with the telescopic rod 6. When the telescopic rod 6 is extended, it can push the clamping assembly downward to open.

[0039] like Figure 6 As shown, the clamping assembly includes a connecting rod 8 connected to the second driving motor 7, a V-shaped bracket 9 rotatably connected to both ends of the connecting rod 8, and an auxiliary roller 10 rotatably connected to the V-shaped bracket 9, and the auxiliary roller 10 is arranged in contact with the bonding aluminum strip;

[0040] The bending part of the V-shaped bracket 9 is connected by a spring shaft. When the telescopic rod 6 is extended, the V-shaped bracket 9 is pressed downward, so that the two auxiliary rollers 10 move away from each other.

[0041] The auxiliary roller 10 can be a non-powered roller, and the V-shaped bracket 9 has a tendency to be retracted toward the middle. When the telescopic rod 6 is extended, the V-shaped bracket 9 can be pressed to open it, and when the telescopic rod 6 is shortened, the V-shaped bracket 9 is retracted. The second drive motor 7 is operated to drive the pressing assembly to rotate, so that the axis of the auxiliary roller 10 is perpendicular to the cutting direction.

[0042] like Figure 7 As shown, when the cutter 3 enters the intermediate fixing assembly, the length direction of the cutter 3 is arranged parallel to the moving direction of the curved cutting assembly;

[0043] When the cutter 3 leaves the middle fixing assembly, the second drive motor 7 drives the clamping assembly to rotate, so that the axis of the auxiliary roller 10 is perpendicular to the length direction of the curved cutting assembly, and the auxiliary roller 10 follows the cutter 3 to move toward the end fixing assembly.

[0044] like Figure 6 and Figure 7 In the schematic diagram of the following state of the intermediate fixing component, as the cutter 3 moves, the intermediate fixing component rotates to be perpendicular to the shape of the bonding aluminum strip 11 to be cut, and the auxiliary roller 10 is pressed downward to open the two auxiliary rollers 10 to increase the fixing range of the bonding aluminum strip. At the same time, the auxiliary roller 10 follows the cutter 3 to move to the side of the end fixing roller 4 to avoid twisting or deformation of the cut bonding aluminum strip.

[0045] like Figure 4 and Figure 5 As shown, the curve cutting assembly includes a cutting track 2 and a cutter 3 having the same shape as the desired bonding aluminum strip, the cutting track 2 is located at the lower side of the bonding aluminum strip, the cutter 3 can move along the cutting track 2, and the length direction of the cutter 3 is perpendicular to the thickness direction of the bonding aluminum strip.

[0046] The length direction of the end fixing roller 4 is arranged along the cutting direction of the bonding aluminum strip.

[0047] A driving screw rod or a driving chain may be arranged inside the cutting track 2 to drive the cutter 3 to move along the direction of the cutting track 2 .

[0048] Directions:

[0049] When the device is used, the position of the curved cutting assembly and the operating table 1 is relatively fixed, the cutting track 2 is arranged inside the operating table 1, and the straight-line distance from the front end of the operating table 1 to the cutter 3 is the required width of the bonding aluminum strip;

[0050] The two ends of the bonding aluminum strip are fixed by two sets of end fixing rollers 4, and the first driving motor is operated to make the two end fixing rollers 4 tighten the bonding aluminum strip in opposite directions;

[0051] The two auxiliary rollers 10 are respectively located on both sides of the cutting track 2 to press the bonding aluminum strips on both sides of the cutting track 2 to prevent the middle part of the bonding aluminum strip from warping upwards;

[0052] The bonded aluminum strip is cut by the cutter 3. After the cutter 3 passes through the two auxiliary rollers 10, the telescopic rod 6 is shortened to separate the auxiliary rollers 10 from the bonded aluminum strip 11 to be cut or no longer press them. The middle fixed component is driven to rotate by the second drive motor 7 to make the axis of the auxiliary roller 10 perpendicular to the travel track of the cutter 3.

[0053] The telescopic rod 6 is very long, so that the two auxiliary rollers 10 are opened, and the auxiliary roller 10 adjacent to the cutter 3 moves along with the cutter 3 toward the other end fixed roller 4 until the cutter 3 enters between the two end fixed rollers 4;

[0054] Until the cutter 3 has completed cutting the bonding aluminum strip 11 to be cut, the telescopic rod 6 is shortened to separate the auxiliary roller 10 from the bonding aluminum strip 11 to be cut. Under the action of the end auxiliary roller 10, the cut bonding aluminum strip is pushed off the operating table 1, and the bonding aluminum strip 11 to be cut continues to be pushed forward until the edge of the bonding aluminum strip 11 to be cut is flush with the edge of the operating table 1.

[0055] The above-mentioned specific embodiments are only specific cases of the present invention. The patent protection scope of the present invention includes but is not limited to the product form and style of the above-mentioned specific embodiments. Any step-by-step cutting device for bonding aluminum strips that complies with the claims of the present invention and any appropriate changes or modifications made thereto by ordinary technicians in the corresponding technical field shall fall within the patent protection scope of the present invention.

Claims

1. A step-by-step cutting device for bonding aluminum strips, comprising an operating table (1) for supporting the movement of the bonding aluminum strips; a curve cutting assembly arranged inside the operating table (1) for cutting the bonding aluminum strips, wherein the cutting direction of the curve cutting assembly is along the width direction of the bonding aluminum strips; and characterized in that: It also includes an auxiliary fixing assembly, which is arranged on the upper side of the bonding aluminum strip, and includes two end fixing assemblies and a middle fixing assembly, wherein the end fixing assemblies are used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly, and when the cutter (3) of the curve cutting assembly is located inside the middle fixing assembly, the middle fixing assembly is used to fix and tighten the bonding aluminum strips on both sides of the curve cutting assembly, and when the cutter (3) of the curve cutting assembly leaves the middle fixing assembly, the middle fixing assembly follows the cutter (3) and moves to be arranged adjacent to the end fixing assemblies; An L-shaped support frame (5) is arranged on the outer side of the operating table (1), and the intermediate fixing component is connected to the L-shaped support frame (5); The intermediate fixing assembly comprises a telescopic rod (6) connected to the L-shaped support frame (5), a second drive motor (7) connected to the lower end of the telescopic rod (6), and a clamping assembly connected to the second drive motor (7), wherein the clamping assembly is in contact with the bonding aluminum strip; The clamping assembly comprises a connecting rod (8) connected to the second driving motor (7), a V-shaped bracket (9) rotatably connected to both ends of the connecting rod (8), and an auxiliary roller (10) rotatably connected to the V-shaped bracket (9), wherein the auxiliary roller (10) is arranged in contact with the bonding aluminum strip; The bending part of the V-shaped bracket (9) is connected via a spring shaft, and when the telescopic rod (6) is extended, the V-shaped bracket (9) is pressed downward, so that the two auxiliary rollers (10) move in a direction away from each other; When the cutter (3) enters the intermediate fixing assembly, the length direction of the cutter (3) is arranged parallel to the moving direction of the curved cutting assembly; When the cutter (3) leaves the middle fixing assembly, the second drive motor (7) drives the pressing assembly to rotate, so that the axis of the auxiliary roller (10) is perpendicular to the length direction of the curved cutting assembly, and the auxiliary roller (10) follows the cutter (3) to move toward the end fixing assembly.

2. A step-by-step cutting device for bonding aluminum strips according to claim 1, characterized in that: The end fixing assembly comprises two end fixing rollers (4) arranged in contact with the bonding aluminum strip, the axis of the end fixing roller (4) is connected to a first driving motor, and the two end fixing rollers (4) are respectively arranged on both sides of the curve cutting assembly. When the cutting knife (3) of the curve cutting assembly cuts the bonding aluminum strip, the two end fixing rollers (4) tighten the bonding aluminum strips on both sides of the curve cutting assembly in opposite directions.

3. The step-by-step cutting device for bonding aluminum strips according to claim 1, characterized in that: The curve cutting assembly comprises a cutting track (2) and a cutter (3) having the same shape as the desired bonding aluminum strip, wherein the cutting track (2) is located at the lower side of the bonding aluminum strip, the cutter (3) can move along the cutting track (2), and the length direction of the cutter (3) is perpendicular to the thickness direction of the bonding aluminum strip.

4. A step-by-step cutting device for bonding aluminum strips according to claim 2, characterized in that: The length direction of the end fixing roller (4) is arranged along the cutting direction of the bonding aluminum strip.

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