Scribing knife with eccentricity eliminating structure for cutting off packaging material

Abstract

The utility model discloses a dicing blade with an eccentricity eliminating structure for cutting off packaging materials, which comprises a cutter head and a mounting shaft arranged at the center of the cutter head, two disc springs are arranged in a compression space, anti-slip pads are respectively arranged on the disc springs, chutes are respectively arranged above and below a cutter head flange, and the mounting shaft is arranged on the mounting shaft. A sliding cavity is formed behind the sliding groove, a check block is arranged in the sliding cavity, a sliding rod is arranged in the sliding groove and the sliding cavity, a limiting block is arranged at the right end of the sliding rod, a spring is arranged on the outer side of the sliding rod, a butt-joint concave block is arranged at the left end of the sliding rod, and butt-joint convex blocks are arranged above and below the back face of the cutter head correspondingly. The cutter head and the flange of the scribing cutter are installed more stably, the assembling gap is effectively eliminated, the eccentric force risk is reduced, meanwhile, operation vibration is absorbed, the assembling gap is compensated through elastic deformation of the disc spring during fastening, the supporting stability is ensured through the anti-skid pad, and therefore the cutting precision is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of dicing blades, specifically relating to a dicing blade for cutting packaging materials with an eccentricity elimination structure. Background Technology

[0002] Dividing blades for packaging materials are an indispensable precision tool in the fields of microelectronics manufacturing and semiconductor packaging. They are mainly used for the efficient and precise division of various packaging materials. Their core function is to cut packaging materials such as wafers, ceramic substrates, and epoxy molding compounds into independent chips or components to meet the needs of miniaturization and high integration of modern electronic devices. The design and performance of these tools are directly related to the cutting quality, production efficiency, and reliability of the final product.

[0003] However, when the existing dicing blade is mounted on the mandrel, there is still a gap between the center of the blade and the center of the mandrel. When rotating, an eccentric force is generated. If it rotates at high speed, it will not be a true circle, which affects the accuracy of the dicing blade processing. Utility Model Content

[0004] The purpose of this utility model is to provide a dicing blade for slicing packaging materials with an eccentricity elimination structure, so as to solve the problem mentioned in the background art that after the existing dicing blade is sleeved on the mandrel, there is still a gap between the center of the blade and the center of the mandrel, which generates eccentric force when rotating. If the high-speed rotation is not true round, it will affect the accuracy of the dicing blade processing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dicing blade for cutting packaging materials with an eccentricity elimination structure, comprising a dicing disc and a mounting shaft disposed at the center of the dicing disc;

[0006] A cutter disc flange is provided on the back of the cutter disc, and a mandrel is provided behind the cutter disc flange, with a screw hole provided on the mandrel;

[0007] The cutter head flange is provided with a compression space, and two disc springs are provided in the compression space. Each disc spring is provided with an anti-slip pad. The cutter head flange is provided with a sliding groove above and below, and a sliding cavity is provided behind the sliding groove. A stop block is provided inside the sliding cavity. A sliding rod is provided inside the sliding groove and the sliding cavity. A limit block is provided at the right end of the sliding rod. A spring is provided on the outside of the sliding rod. A mating concave block is provided at the left end of the sliding rod. A mating protrusion is provided above and below the back of the cutter head.

[0008] Preferably, the mating protrusion is integrally formed with the cutter head, the mating protrusion can be inserted and spliced ​​with the mating concave block, and the mating concave block is welded to the sliding rod.

[0009] Preferably, the spring is sleeved with the sliding rod, the spring is installed inside the sliding groove, and the spring is compressed when the mating block moves to the right.

[0010] Preferably, the limiting block and the sliding rod are integrally formed, the stop block is fixedly connected to the sliding cavity, the stop block can block and limit the limiting block, and the sliding rod can slide into the sliding cavity.

[0011] Preferably, the anti-slip pad is sleeved with the disc spring, the anti-slip pad is sleeved on the through hole of the disc spring, the disc spring is sleeved with the screw, the anti-slip pad is made of rubber, and the anti-slip pad can prevent slippage between the disc springs.

[0012] Preferably, the two disc springs are installed in a relative manner, which can improve the elasticity of the disc springs and the axial vibration damping capability of the cutter head. The relative installation of the disc springs can suppress high-frequency vibrations during the movement of the cutter head.

[0013] Preferably, the vibration damping pad is sleeved with the screw, and the vibration damping pad is made of rubber material. The vibration damping pad can reduce the connection gap between the screw and the cutter head.

[0014] Compared with the prior art, this utility model provides a dicing blade for cutting packaging materials with an eccentricity elimination structure, which has the following beneficial effects:

[0015] 1. Through the coordinated operation of the stop block, mating protrusion, cutter head, mating concave block, sliding rod, spring, slide groove, limit block, and sliding cavity, the installation of the cutter head and flange is made more stable and reliable. During installation, the mating protrusion and mating concave block are precisely matched. Then, during the screw tightening process, the mating concave block pushes the sliding rod to move inward along the slide groove and compresses the spring. The spring's rebound force effectively eliminates the assembly gap between the cutter head and flange, thereby reducing the risk of eccentric force. At the same time, the spring's buffering effect can absorb the axial vibration of the cutter head during operation, ensuring the stability of the cutting process. The design of the stop block and limit block can prevent the sliding rod from coming out, further enhancing the durability and safety performance of the overall structure.

[0016] 2. Through the setting of disc springs, anti-slip pads and adjustable compression space, when the screws are tightened, the compression space gradually decreases, causing the opposing disc springs to be deformed under pressure. While reducing stiffness, it enhances elastic compensation ability. The elastic support of the disc springs can tightly hold the cutter head and flange together, effectively eliminating the eccentric force caused by the assembly gap, thereby improving the cutting accuracy of the cutter head. The fit design of the anti-slip pads avoids relative sliding between the disc springs, ensuring uniform distribution of support force, and further enhancing the stability and reliability of the overall structure. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cutter head structure of this utility model.

[0018] Figure 2 This is a side view of the cutter head and mandrel of this utility model.

[0019] Figure 3 This is a schematic diagram of the docking concave block and docking protrusion structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the disc spring mounting structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the disc spring structure of this utility model.

[0022] In the diagram: 1. Cutter head; 2. Mounting shaft; 3. Screw; 4. Mandrel; 5. Cutter head flange; 6. Screw hole; 7. Connecting recess; 8. Connecting protrusion; 9. Sliding rod; 10. Spring; 11. Stop block; 12. Sliding cavity; 13. Limiting block; 14. Slide groove; 15. Anti-slip pad; 16. Vibration damping pad; 17. Compression space; 18. Disc spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides, for example Figure 1-5 A dicing blade for cutting packaging materials with an eccentricity elimination structure is shown, including a dicing disc 1 and a mounting shaft 2 disposed at the center of the dicing disc 1;

[0025] A cutter disc flange 5 is provided on the back of the cutter disc 1, and a spindle 4 is provided behind the cutter disc flange 5. A screw hole 6 is provided on the spindle 4.

[0026] A compression space 17 is provided on the cutter head flange 5. Two disc springs 18 are provided in the compression space 17. Anti-slip pads 15 are provided on the disc springs 18 respectively. Slide grooves 14 are provided above and below the cutter head flange 5. A sliding cavity 12 is provided behind the slide groove 14. A stop block 11 is provided inside the sliding cavity 12. A sliding rod 9 is provided inside the slide groove 14 and the sliding cavity 12. A limit block 13 is provided at the right end of the sliding rod 9. A spring 10 is provided on the outside of the sliding rod 9. A mating recess 7 is provided at the left end of the sliding rod 9. A mating protrusion 8 is provided above and below the back of the cutter head 1 respectively.

[0027] In this embodiment, the dicing blade for dicing packaging materials is a tool for efficiently and accurately dividing various packaging materials. Its core function is to cut packaging materials such as wafers, ceramic substrates, and epoxy resin molding compounds into independent chips or components. After the dicing disc 1 is installed on the dicing disc flange 5 and the packaging materials are prepared, the equipment can be started. The spindle 4 can drive the dicing disc 1 to rotate and cut the packaging materials. The feed speed needs to be dynamically adjusted according to the material hardness to balance efficiency and cutting quality. At the same time, during the cutting process, coolant is continuously sprayed through the nozzle to the contact area between the dicing disc 1 and the material, which plays a role in cooling, lubrication, and chip removal. After the cutting is completed, the worktable returns to the initial position, the cut material is taken out and cleaned to remove residual debris and coolant from the surface. Finally, the edge chipping, micro-cracks, and dimensional accuracy are checked to see if they meet the requirements.

[0028] like Figure 2 and Figure 3 As shown, the mating protrusion 8 is integrally formed with the cutter head 1. The mating protrusion 8 can be inserted and assembled with the mating concave block 7. The mating concave block 7 is welded to the sliding rod 9. The spring 10 is sleeved with the sliding rod 9. The spring 10 is installed inside the slide groove 14. When the mating concave block 7 moves to the right, it will compress the spring 10. The limiting block 13 is integrally formed with the sliding rod 9. The stop block 11 is fixedly connected to the sliding cavity 12. The stop block 11 can block and limit the limiting block 13. The sliding rod 9 can slide into the sliding cavity 12.

[0029] Preferably, by setting up the stop block 11, the mating protrusion 8, the cutter head 1, the mating concave block 7, the sliding rod 9, the spring 10, the slide groove 14, the limiting block 13, and the sliding cavity 12, when the cutter head 1 is installed with the cutter head flange 5, the mating protrusion 8 and the mating concave block 7 need to be assembled and installed. Then, during the installation and tightening of the screw 3, the mating concave block 7 will push the sliding rod 9 to move into the slide groove 14 and the sliding cavity 12, thereby compressing the spring 10. The rebound force of the spring 10 can make the installation between the cutter head 1 and the cutter head flange 5 tighter, reduce the gap when the cutter head 1 is installed, and reduce the risk of the cutter head 1 generating eccentric force. At the same time, the spring 10 can reduce and absorb the vibration of the cutter head 1 to a certain extent, ensuring the stability of the cutter head 1. The cooperation between the stop block 11 and the limiting block 13 can prevent the sliding rod 9 from disengaging from the slide groove 14 and the sliding cavity 12, ensuring the stability of the structure.

[0030] like Figure 4 and Figure 5As shown, the anti-slip pad 15 is sleeved with the disc spring 18, and the anti-slip pad 15 is sleeved at the through hole of the disc spring 18. The disc spring 18 is sleeved with the screw 3. The anti-slip pad 15 is made of rubber and can prevent the disc springs 18 from sliding. The two disc springs 18 are installed in a relative manner, which can improve the elasticity of the disc springs 18 and the axial vibration damping capacity of the cutter head 1. The relative installation of the disc springs 18 can suppress the high-frequency vibration when the cutter head 1 moves. The vibration damping pad 16 is sleeved with the screw 3. The vibration damping pad 16 is made of rubber and can reduce the connection gap between the screw 3 and the cutter head 1.

[0031] Preferably, with the arrangement of disc spring 18, anti-slip pad 15, and compression space 17, when the cutter head 1 is fixedly installed with the cutter head flange 5 and mandrel 4 by screw 3, the compression space 17 will continuously decrease, and at the same time, it will continuously compress the disc spring 18. The relatively arranged disc spring 18 will reduce the stiffness of the disc spring 18 and increase its elasticity. The compressed disc spring 18 can ensure that the cutter head 1 and the cutter head flange 5 are respectively held against each other, providing support for the cutter head 1, the cutter head flange 5, and the mandrel 4, reducing the influence of the gap between the cutter head 1 and the cutter head flange 5, eliminating the eccentric force of the cutter head 1, and improving the cutting accuracy of the cutter head 1. At the same time, the fit of the anti-slip pad 15 can ensure that the disc springs 18 will not slip, improving the support stability of the disc springs 18.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dicing blade with eccentricity elimination structure for encapsulating material cutting, comprising a blade disc (1) and a mounting shaft (2) arranged at the center of the blade disc (1); A blade disc flange (5) is arranged on the back of the blade disc (1), a mandrel (4) is arranged behind the blade disc flange (5), and a threaded hole (6) is arranged on the mandrel (4); characterized in that A compression space (17) is arranged on the blade disc flange (5), two disc springs (18) are arranged in the compression space (17), anti-skid pads (15) are respectively arranged on the disc springs (18), sliding grooves (14) are respectively arranged above and below the blade disc flange (5), sliding cavities (12) are arranged behind the sliding grooves (14), stop blocks (11) are arranged inside the sliding cavities (12), sliding rods (9) are arranged inside the sliding grooves (14) and the sliding cavities (12), limit blocks (13) are arranged at the right ends of the sliding rods (9), springs (10) are arranged outside the sliding rods (9), and butt joint concave blocks (7) are arranged at the left ends of the sliding rods (9).

2. The dicing saw blade with eccentricity elimination structure according to claim 1, wherein: The butt joint convex blocks (8) are integrally formed with the blade disc (1), the butt joint convex blocks (8) can be inserted and spliced with the butt joint concave blocks (7), and the butt joint concave blocks (7) are welded with the sliding rods (9).

3. The dicing saw blade with eccentricity elimination structure according to claim 2, wherein: The springs (10) are sleeved with the sliding rods (9), the springs (10) are arranged inside the sliding grooves (14), and the right movement of the butt joint concave blocks (7) will compress the springs (10).

4. The dicing saw blade with eccentricity elimination structure according to claim 3, wherein: The limit blocks (13) are integrally formed with the sliding rods (9), the stop blocks (11) are fixedly connected with the sliding cavities (12), the stop blocks (11) can block and limit the limit blocks (13), and the sliding rods (9) can slide into the sliding cavities (12).

5. The dicing saw according to claim 1, wherein: the eccentricity eliminating structure is provided on the saw blade. The anti-skid pads (15) are sleeved with the disc springs (18), the anti-skid pads (15) are sleeved at the through holes of the disc springs (18), the disc springs (18) are sleeved with the screws (3), the anti-skid pads (15) are made of rubber material, and the anti-skid pads (15) can prevent the disc springs (18) from sliding.

6. The dicing saw blade with eccentricity elimination structure according to claim 5, wherein: The two disc springs (18) are arranged in a relative mounting mode, which can improve the elasticity of the disc springs (18) and the axial damping capacity of the blade disc (1), and the relative mounting of the disc springs (18) can suppress the high-frequency vibration of the blade disc (1) during movement.

7. The dicing saw according to claim 1, wherein: the eccentricity eliminating structure is provided on the saw blade. The damping pads (16) are sleeved with the screws (3), the damping pads (16) are made of rubber material, and the damping pads (16) can reduce the connection gap between the screws (3) and the blade disc (1).

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