Cutting knife capable of removing burrs and cutting device

Abstract

The utility model provides a cutting knife and a cutting device capable of removing burrs, and the cutting knife comprises a rigid cutting part which is provided with a cutting surface; the flexible scraping part is fixed to the side, away from the cutting face, of the cutting part, and the friction force between the scraping part and a product to be cut is larger than that between the cutting part and the product to be cut. According to the cutting knife capable of removing the burrs and the cutting device, the rigid cutting part is used for cutting a product, the flexible scraping part is used for removing the burrs generated by cutting, the burrs can be removed in time after cutting, short circuit caused by the fact that the burrs make contact with adjacent base pins can be avoided, the performance and the yield of the product are greatly improved, and the product quality is improved. And the to-be-cut product does not need to be specially designed to avoid burrs, so that the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of integrated circuit packaging, in particular to a cutting knife and a cutting device capable of removing burrs. Background Art

[0002] Rib forming is one of the important processes in integrated circuit packaging. The burrs generated during the rib forming process not only affect the appearance quality, but also affect the electrical performance, safety and reliability of the product.

[0003] The burr problem is usually solved by improving the design of the package structure, such as designing the package structure with pins not reaching the edge to avoid burrs caused by cutting. However, there are still many package structures that cannot be designed as structures with pins not reaching the edge. For example, in some package structures, the cutting paths are all metal and cannot be designed as structures with pins not reaching the edge. It is also difficult to improve the burr phenomenon by changing the design surface.

[0004] Therefore, how to remove the burrs produced by cutting to avoid affecting product performance has become one of the technical problems that urgently need to be solved. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a cutting knife and a cutting device capable of removing burrs, which can remove burrs generated during cutting and improve product performance and yield.

[0006] In order to solve the above problems, the utility model provides a cutting knife capable of removing burrs, comprising: a rigid cutting portion, wherein the cutting portion has a cutting surface; and a flexible scraping portion, wherein the scraping portion is fixed on a side of the cutting portion away from the cutting surface, wherein the friction force between the scraping portion and the product to be cut is greater than the friction force between the cutting portion and the product to be cut.

[0007] In one embodiment, the cutting portion is in the shape of a circular ring, the cutting surface is located on the outer surface of the circular ring, and the scraping portion is arranged following the contour of a side of the cutting portion facing away from the cutting surface.

[0008] In one embodiment, the scraping portion includes a rigid supporting structure and a flexible layer covering a surface of the supporting structure.

[0009] In one embodiment, the cutting portion has a protrusion on a side facing away from the cutting surface, and a flexible layer covers the protrusion to form the scraping portion, and the protrusion serves as the supporting structure.

[0010] In one embodiment, the support structure and the cutting portion are independent of each other, and the support structure is fixed to a side of the cutting portion away from the cutting surface through a connecting member.

[0011] In one embodiment, the thickness of the support structure is less than or equal to the thickness of the cutting part.

[0012] In one embodiment, the width of the cutting part is less than or equal to the sinking height of the cutting tool when cutting the product.

[0013] In one embodiment, the width of the cutting part is 0.4 - 0.6 mm.

[0014] In one embodiment, the width of the scraping part is greater than the width of the cutting part.

[0015] In one embodiment, the thickness of the scraping part is greater than the thickness of the cutting part.

[0016] An embodiment of the present invention further provides a cutting device, which includes the cutting tool as described above.

[0017] The cutting tool and the cutting device capable of removing burrs provided by the embodiments of the present utility model use the rigid cutting part to cut the product, and use the flexible scraping part to remove the burrs generated by cutting. After cutting, the burrs can be removed in time, thereby avoiding the burrs contacting adjacent pins and causing short circuits, greatly improving the performance and yield of the product, and the product to be cut does not need to be specially designed to avoid burrs, reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0019] Figure 1 is a side view of the cutting tool capable of removing burrs provided by an embodiment of the present utility model;

[0020] Figure 2A is a schematic diagram of cutting a product using the cutting tool provided by the embodiment of the present utility model;

[0021] Figure 2B is another schematic diagram of cutting a product using the cutting tool provided by the embodiment of the present utility model;

[0022] Figure 3 is along Figure 1 the cross-sectional view taken along line A - A in

[0023] Figure 4 is the cross-sectional view taken along line A - A of the cutting tool capable of removing burrs provided by another embodiment of the present utility model at the position of Figure 1 in

[0024] Figure 5 It is a schematic diagram of fixing a cutting knife provided by yet another embodiment of the utility model. DETAILED DESCRIPTION

[0025] The specific implementation of the cutting knife capable of removing burrs and the cutting device provided by the utility model will be described in detail below in conjunction with the accompanying drawings.

[0026] Figure 1 This is a side view of a cutting knife capable of removing burrs provided by an embodiment of the utility model. Figure 1 The cutting knife includes: a rigid cutting portion 100, wherein the cutting portion 100 has a cutting surface 101; a flexible scraping portion 110, wherein the scraping portion 110 is fixed on a side of the cutting portion 100 away from the cutting surface 101, wherein the friction between the scraping portion 110 and the product to be cut is greater than the friction between the cutting portion 100 and the product to be cut.

[0027] The cutting knife provided by the embodiment of the utility model uses a rigid cutting part 100 to cut the product, and uses a flexible scraping part 110 to remove the burrs generated by cutting. The burrs can be removed in time after cutting, thereby preventing the burrs from contacting adjacent pins and causing short circuits, greatly improving the performance and yield of the product, and the product to be cut does not need to be specially designed to avoid burrs, thereby reducing costs. Specifically, Figure 2A This is a schematic diagram of using the cutting knife provided by the embodiment of the utility model to cut a product. Figure 2B This is another schematic diagram of using the cutting knife provided by the embodiment of the utility model to cut a product; please refer to Figure 2A When the cutting knife provided by the embodiment of the utility model is used to cut a product, the cutting part 100 cuts the product 220 to form a cutting gap 200, and a burr 210 is formed at the cutting gap 200; please refer to Figure 2B As the cutting knife moves toward the product 220 (in the Z direction in the figure), the scraping portion 110 passes through the cutting gap 200. The scraping portion 110 uses the friction between it and the side of the product 220 at the cutting gap 200 to remove the burrs 210 generated by the cutting, thereby achieving the purpose of removing the burrs 210.

[0028] The cutting part 100 is a rigid cutting part with a large hardness, and can achieve cutting of products. In some embodiments, the material of the cutting part 100 can be ordinary steel such as tungsten steel and tool steel, or mold steel such as tungsten-cobalt hard alloy (such as YG15).

[0029] The scraping portion 110 is a flexible scraping portion, which can use the greater friction between the surface of the scraping portion 110 and the product to be cut to remove the burrs from the product surface, thereby achieving the purpose of removing the burrs. In some embodiments, the material of the surface of the scraping portion 110 is silicone, and in other embodiments, the material of the surface of the scraping portion 110 can also be a material with higher durability than silicone to increase the life of the cutting blade.

[0030] In some embodiments, Figure 1 As shown, the cutting portion 100 is in the shape of a ring, the cutting surface 101 is located on the outer surface of the ring, and the scraping portion 110 is arranged following the contour of the cutting portion 100 on the side away from the cutting surface 101. In this embodiment, when the cutting knife provided by the embodiment of the utility model is used to cut a product, the cutting knife moves in the direction of the product (such as Figure 2A The scraping portion 110 moves in the Z direction (in the Z direction) and rotates at the same time. As the cutting knife moves and rotates, the scraping portion 110 uses the friction between it and the side of the product at the cutting gap 200 to remove the burrs generated by the cutting, thereby achieving the purpose of removing the burrs.

[0031] In some embodiments, in order to increase the strength of the scraping portion 110, the scraping portion 110 includes a rigid support structure 111 and a flexible layer 112 covering the surface of the support structure 111. The rigid support structure 111 can support the scraping portion 110, and the flexible layer 112 can make the surface of the scraping portion 110 flexible and increase the friction between the scraping portion 110 and the product to be cut. In some embodiments, the flexible layer 112 can be a flexible coating to take into account both the strength and friction of the scraping portion 110.

[0032] In some embodiments, the thickness L3 of the support structure 111 is less than or equal to the thickness L1 of the cutting portion 100 to prevent the scraping portion 110 from being too thick to enter the cutting gap 200 after the flexible layer 112 covers the support structure 111 .

[0033] In some embodiments, the support structure 111 can be integrally formed with the cutting portion 100 to save manufacturing steps and costs and improve the connection firmness between the support structure 111 and the cutting portion 100. Specifically, Figure 3 is along Figure 1 For a cross-sectional diagram of the AA line, please refer to Figure 3, a side of the cutting portion 100 facing away from the cutting surface 101 has a protrusion, and the flexible layer 112 covers the protrusion to form the scraping portion 110, and the protrusion serves as the supporting structure 111. In this embodiment, a side of the cutting portion 100 protrudes to form the protrusion, so that the cutting portion 100 and the supporting structure 111 can be manufactured in the same process, saving the manufacturing process and cost, and improving the connection firmness between the supporting structure 111 and the cutting portion 100. In this embodiment, the thickness of the protrusion is less than the thickness L1 of the cutting portion 100.

[0034] In some embodiments, the supporting structure 111 and the cutting portion 100 are independent of each other, and the supporting structure 111 is fixed to a side of the cutting portion 100 facing away from the cutting surface 101 through a connecting member 400, that is, the supporting structure 111 is detachably fixed to the cutting portion 100. When the surface of the scraping portion 110 is worn or the cutting portion 100 is damaged, only the supporting structure 111 or the cutting portion 100 can be disassembled and replaced, without discarding the cutting tool, further saving costs. Specifically, Figure 4 is a cross-sectional schematic view of the cutting tool edge capable of removing burrs provided by another embodiment of the present invention along Figure 1 the position of line A-A in the figure. In this embodiment, the supporting structure 111 and the cutting portion 100 are not integrally formed, and the supporting structure 111 is an independent component, which is fixed to a side of the cutting portion 100 facing away from the cutting surface 101 through a connecting member 400. In some embodiments, the connecting member 400 is a mechanical connecting member 400, such as a screw; in other embodiments, the connecting member 400 is a resinous bonding layer, and the supporting structure 111 is fixed to the cutting portion 100 through the bonding layer.

[0035] In one embodiment, the width W1 of the cutting portion 100 is less than or equal to the sinking height of the cutting tool when cutting a product, so as to ensure that the side surface of the cutting gap 200 can be in full contact with the scraping portion 110, thereby improving the burr removal effect. For example, in some embodiments, when using the cutting tool to cut a product, the cutting tool usually sinks 0.4 - 0.6 mm, then the width W1 of the cutting portion 100 is 0.4 - 0.6 mm and is greater than or equal to the sinking height.

[0036] In one embodiment, the width W2 of the scraping portion 110 is greater than the width W1 of the cutting portion 100 to increase the contact area between the scraping portion 110 and the side surface of the cutting gap 200, thereby improving the burr removal effect. In one embodiment, the width W2 of the scraping portion 110 may also be equal to the width W1 of the cutting portion 100.

[0037] In one embodiment, the thickness L2 of the scraping portion 110 is greater than the thickness L1 of the cutting portion 100, so as to reduce the distance between the scraping portion 110 and the side surface of the cutting gap 200, further increasing the force for removing burrs and improving the burr removal effect.

[0038] In one embodiment, according to product requirements, the cutting surface 101 of the cutting portion 100 is a plane or a curved surface.

[0039] The cutting knife capable of removing burrs provided by the embodiment of the present utility model uses the rigid cutting portion 100 to cut the product, and uses the flexible scraping portion 110 to remove the burrs generated by cutting. After cutting, the burrs can be removed in time, thereby avoiding the burrs contacting adjacent pins and causing short circuits, greatly improving the performance and yield of the product, and the product to be cut does not need to be specially designed to avoid burrs, reducing the cost.

[0040] Another embodiment of the present utility model further provides a cutting device, and the cutting device includes the cutting knife as described above. Figure 5 It is a schematic diagram of the fixation of the cutting knife provided by still another embodiment of the present utility model. As Figure 5 shown, the cutting knife 500 is a circular cutting knife, and its specific structure is as described above. The fixing member 510 of the cutting device is arranged at the center of the cutting knife 500 and is connected to the cutting knife 500 for fixing the cutting knife 500. The cutting device drives the fixing member 510 to drive the cutting knife 500 to rotate and move linearly, thereby realizing the cutting of the product.

[0041] The cutting device uses the rigid cutting portion 100 of the cutting knife to cut the product, and uses the flexible scraping portion 110 of the cutting knife to remove the burrs generated by cutting. After cutting, the burrs can be removed in time, thereby avoiding the burrs contacting adjacent pins and causing short circuits, greatly improving the performance and yield of the product, and the product to be cut does not need to be specially designed to avoid burrs, reducing the cost.

[0042] It should be noted that the terms "including" and "having" and their variants in the documents of the present utility model are intended to cover non-exclusive inclusion. The terms "first", "second", etc. are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. Unless the context clearly indicates otherwise, it should be understood that the data used in this way can be interchanged under appropriate circumstances. The term "one or more" depends at least in part on the context and can be used to describe a feature, structure, or property in the singular sense, or can be used to describe a combination of features, structures, or features in the plural sense. The term "based on" can be understood as not necessarily intended to express a set of exclusive factors, but rather, alternatively, and also at least in part depending on the context, allows for the existence of other factors that may not be explicitly described. Additionally, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. Furthermore, in the above description, the description of well-known components and technologies is omitted to avoid unnecessarily confusing the concepts of the present utility model. In each of the above embodiments, the key point of each embodiment is to illustrate the differences from other embodiments. For the same / similar parts among the various embodiments, reference can be made to each other.

[0043] The above is only the preferred embodiment of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A cutting tool capable of removing burrs, characterized in that, include: a rigid cutting portion having a cutting surface; A flexible scraping portion is fixed to a side of the cutting portion facing away from the cutting surface, wherein the friction force between the scraping portion and the product to be cut is greater than the friction force between the cutting portion and the product to be cut.

2. The deburring cutting tool according to claim 1, characterized in that, The cutting portion is in the shape of a circular ring, the cutting surface is located on the outer surface of the circular ring, and the scraping portion is arranged following the contour of the cutting portion on a side away from the cutting surface.

3. The cutting tool capable of removing burrs according to claim 1, wherein The scraping portion includes a rigid supporting structure and a flexible layer covering a surface of the supporting structure.

4. The cutting tool capable of removing burrs according to claim 3, wherein, The cutting portion has a protrusion on a side facing away from the cutting surface, and the flexible layer covers the protrusion to form the scraping portion, and the protrusion serves as the supporting structure.

5. The cutting tool capable of removing burrs according to claim 3, wherein, The supporting structure and the cutting portion are independent of each other, and the supporting structure is fixed to a side of the cutting portion away from the cutting surface through a connecting member.

6. The cutting tool capable of removing burrs according to claim 3, characterized in that, The thickness of the supporting structure is less than or equal to the thickness of the cutting portion.

7. The cutting tool capable of removing burrs according to claim 1, characterized in that, The width of the cutting portion is less than or equal to the sinking height of the cutting blade when cutting the product.

8. The cutting tool capable of removing burrs according to claim 1, wherein, The width of the cutting portion is 0.4-0.6 mm.

9. The cutter capable of removing burrs according to claim 1, characterized in that, The scraping portion has a width greater than that of the cutting portion.

10. The cutting tool capable of removing burrs according to claim 1, characterized in that, The scraping portion has a thickness greater than that of the cutting portion.

11. A cutting device, characterized in that, The invention comprises a cutting knife as claimed in any one of claims 1 to 10.

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