Lower punch chip cutting mechanism

Abstract

The utility model discloses a lower punch chip cutting mechanism, and particularly relates to the technical field of chip pin stamping and cutting, the lower punch chip cutting mechanism comprises a bottom plate fixedly connected with equipment, and connecting plates are fixedly arranged on the edges of the two sides of the lower surface of the bottom plate. By arranging the cam shaft, the rocker and the linkage piece, when the piston rod is pulled up and down by the rocker, the space between the piston rod and the air cylinder body is filled with compressed air, so that the piston rod and the air cylinder body form a whole, the movable plate and the top plate are driven to move up and down, and the pressure value of the compressed air filled in the air cylinder body is changed; the punching force can be adjusted, meanwhile, a punched product is protected, the situation that the punching force is too large, and the product is damaged is avoided, the piston rod and the air cylinder body form an overload protection air cylinder, the good protection capacity is achieved for punching of different products, product losses in the production process are effectively reduced, and the quality in the chip manufacturing process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chip pin punching and cutting, in particular to a lower punch chip cutting mechanism. Background Art

[0002] With the rapid development of the semiconductor integrated circuit industry, integrated circuit products are also changing with each passing day, and many types and varieties of products have emerged. As a result, the original semiconductor equipment has gradually been unable to meet the needs of many existing products. The soldering pins of the packaged chips need to be stamped and cut.

[0003] The existing chip pin punching equipment uses an upper punch, and the motor drives the punch unit to punch directly. This structure has low efficiency in punching chips. The punching force directly driven by the motor is uncontrollable. The punching force is insufficient for products requiring large tonnage. For products requiring small tonnage punching force, the punching force is too large, which can easily cause damage to the plastic sealing part of the product. It is not well applicable to the punching of different products, which limits the production capacity of semiconductor chip pin punching. Utility Model Content

[0004] The purpose of the present invention is to provide a lower punch chip cutting mechanism to solve the problems mentioned in the above background technology.

[0005] The main technical problems solved by this utility model are:

[0006] In the existing solution, the punch unit is driven by a motor to punch directly, which has a low efficiency in punching chips. In addition, the punching force directly driven by the punch is uncontrollable. If the punching force is too large, it is easy to cause damage to the plastic sealing part of the product.

[0007] The utility model can be realized by the following technical solutions:

[0008] A lower punch chip cutting mechanism comprises a base plate fixedly connected to the equipment, connecting plates are fixedly installed on both side edges of the lower surface of the base plate, and a top plate is provided above the base plate, there is a gap between the top plate and the base plate, the bottom surface of the connecting plate is connected to a fixed plate, a movable plate is provided below the fixed plate, a connecting piece is installed between the movable plate and the top plate, a linkage piece is embedded in the surface of the movable plate, a camshaft is rotatably installed on the inner side of the connecting plate, at least one rocker is installed through the outer surface of the camshaft, and the lower end of the rocker is hinged to the linkage piece.

[0009] A further technical improvement of the present invention is that the connecting member includes four connecting rods, the top ends of the connecting rods are fixed to the surface edge of the top plate, and the bottom ends of the connecting rods slide through the surface of the fixed plate and are fixed to the upper end surface of the movable plate.

[0010] A further technical improvement of the present invention is that the linkage part includes a piston rod, the piston rod is hinged to the rocker, and a cylinder body is provided on the outer side of the piston rod. The cylinder body is installed on the upper end surface of the movable plate, and the cylinder body moves through the surface of the fixed plate.

[0011] A further technical improvement of the present invention is that: a placement groove is provided on the upper surface of the top plate, and a mounting hole is provided on the bottom surface of the inner cavity of the placement groove.

[0012] A further technical improvement of the present invention is that a punch unit for punching products is provided on the lower surface of the top plate, and the punch unit is fixed to the mounting hole by bolts.

[0013] A further technical improvement of the present invention is that a mounting plate is fixedly provided on one end of the fixing plate, a pulley driven by a motor is installed on the mounting plate, a transmission wheel fixedly connected to the end of the camshaft is installed on the outer side of the connecting plate, and a belt is installed between the transmission wheel and the pulley.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting the camshaft, rocker and linkage parts, when the piston rod is pulled up and down by the rocker, compressed air is filled between the piston rod and the cylinder body, so that the piston rod and the cylinder body form a whole, thereby driving the movable plate and the top plate to move up and down, and changing the pressure of the compressed air filled in the cylinder body, the punching force can be adjusted, and at the same time, the punched product is protected from excessive punching force and damage to the product. The piston rod and the cylinder body form an overload protection cylinder, which has a good protection capability for the punching of different products, effectively reducing product losses during the production process and improving the quality of the chip manufacturing process;

[0016] 2. Since the driving source is installed below the bottom plate, the method of downward power punching is adopted, which effectively avoids the problem of the load on the working table and the high and unstable center of gravity of the equipment;

[0017] 3. By setting up multiple punch units, production costs can be reduced and production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the external structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the planar structure of the utility model;

[0021] Figure 3It is a side view of the utility model;

[0022] Figure 4 For this utility model Figure 2 Cross-sectional view at the dotted line.

[0023] In the figure: 1. Base plate; 2. Connecting plate; 3. Mounting plate; 4. Camshaft; 5. Fixed plate; 6. Movable plate; 7. Piston rod; 8. Cylinder block; 9. Top plate; 10. Connecting rod; 11. Rocker arm; 12. Belt; 13. Placement groove; 14. Mounting hole; 15. Drive wheel. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0025] See also Figures 1-4 As shown, the utility model provides a lower punch chip cutting mechanism, including a bottom plate 1 fixedly connected to the equipment, and connecting plates 2 are fixedly installed on both side edges of the lower surface of the bottom plate 1, and a top plate 9 is provided above the bottom plate 1, and there is a gap between the top plate 9 and the bottom plate 1, and a product is placed on the bottom plate 1, and a fixed plate 5 is connected to the bottom surface of the connecting plate 2, and a movable plate 6 is provided below the fixed plate 5, and a connecting piece is installed between the movable plate 6 and the top plate 9, and a linkage piece is embedded in the surface of the movable plate 6, and a camshaft 4 is rotatably installed on the inner side of the connecting plate 2, and at least one rocking arm 11 is installed through the outer surface of the camshaft 4, and the lower end of the rocking arm 11 is hinged with the linkage piece, and when the camshaft 4 rotates, it drives the corresponding rocking arm 11 to move up and down, thereby driving the linkage piece to move up and down, and the movable plate 6 and the top plate 9 are driven to move up and down synchronously through the connecting piece, and then the punch unit suspended from the bottom surface of the top plate 9 punches the product to be punched, adopting lower power punching. The method effectively avoids the problem of mechanical load on the workbench and high and unstable center of gravity of the equipment; the linkage includes a piston rod 7, the piston rod 7 is hinged to the rocker 11, and the outer side of the piston rod 7 is cooperated with a cylinder body 8, the cylinder body 8 is installed on the upper end surface of the movable plate 6, and the cylinder body 8 moves through the surface of the fixed plate 5. When the piston rod 7 is pulled up and down by the rocker 11, compressed air is filled between the piston rod 7 and the cylinder body 8, so that the piston rod 7 and the cylinder body 8 form a whole, thereby driving the movable plate 6 and the top plate 9 to move up and down, and changing the pressure value of the compressed air filled in the cylinder body 8, which can adjust the punching force and protect the punched product at the same time, preventing the punching force from being too large and causing damage to the product. The piston rod 7 and the cylinder body 8 constitute an overload protection cylinder, which has a good protection capability for the punching of different products, effectively reduces the loss of products in the production process, and improves the quality of the chip manufacturing process.

[0026] See Figure 1 As shown, the connecting member includes four connecting rods 10, the top end of the connecting rod 10 is fixed to the surface edge of the top plate 9, and the bottom end of the connecting rod 10 slides through the surface of the fixed plate 5 and is fixed to the upper end surface of the movable plate 6. The connecting rod 10 ensures the synchronous limited sliding of the top plate 9 and the movable plate 6. The movable plate 6 is subjected to the rotational thrust of the camshaft 4, which in turn drives the rocker 11 to move up and down. Under the push of the linkage member, the movable plate 6 and the top plate 9 are driven to run together at the same time.

[0027] See Figure 1 As shown, a placement groove 13 is provided on the upper surface of the top plate 9, and a mounting hole 14 is provided on the bottom surface of the inner cavity of the placement groove 13; a plurality of punch units for punching products are provided on the lower surface of the top plate 9, and the punch units are fixed to the mounting holes 14 by bolts. By fitting the plurality of punch units on the lower surface of the top plate 9 and fixing the corresponding punch units by using the mounting holes 14, the top plate 9 moves up and down with the movable plate 6, thereby quickly punching the product. By setting a plurality of punch units, the production cost is reduced and the production efficiency is improved.

[0028] See Figure 1 and Figure 3 As shown, a mounting plate 3 is fixedly provided at one end of the fixed plate 5, and a pulley driven by a motor is installed on the mounting plate 3. A transmission wheel 15 fixedly connected to the end of the camshaft 4 is installed on the outer side of the connecting plate 2, and a belt 12 is installed between the transmission wheel 15 and the pulley. When working, the motor drives the pulley to rotate, and the belt 12 drives the transmission wheel 15 to work, thereby causing the camshaft 4 to rotate and provide driving power.

[0029] When the present invention is in use, by setting the camshaft 4, rocker 11 and linkage parts, since the driving source is installed below the base plate 1, the lower power punching method is adopted, which effectively avoids the problem of mechanical load on the work table and high instability of the equipment center of gravity. When the piston rod 7 is pulled up and down by the rocker 11, compressed air is filled between the piston rod 7 and the cylinder body 8, so that the piston rod 7 and the cylinder body 8 form a whole, thereby driving the movable plate 6 and the top plate 9 to move up and down, and changing the pressure value of the compressed air filled in the cylinder body 8, which can adjust the punching force and protect the punched product at the same time, preventing the punching force from being too large and causing damage to the product. The piston rod 7 and the cylinder body 8 constitute an overload protection cylinder, which has a good protection capability for the punching of different products, effectively reduces the loss of products in the production process, and improves the quality of the chip manufacturing process; through the setting of multiple punch units, the production cost is reduced and the production efficiency is improved.

[0030] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A lower punch chip cutting mechanism, characterized in that: The invention comprises a bottom plate (1) fixedly connected to the equipment, connecting plates (2) are fixedly installed on both side edges of the lower surface of the bottom plate (1), a top plate (9) is provided above the bottom plate (1), a gap exists between the top plate (9) and the bottom plate (1), the bottom surface of the connecting plate (2) is connected to a fixed plate (5), a movable plate (6) is provided below the fixed plate (5), a connecting piece is installed between the movable plate (6) and the top plate (9), a linkage piece is embedded in the surface of the movable plate (6), a camshaft (4) is rotatably installed on the inner side of the connecting plate (2), at least one rocking arm (11) is installed through the outer surface of the camshaft (4), and the lower end of the rocking arm (11) is hinged to the linkage piece; The linkage member includes a piston rod (7), the piston rod (7) is hinged to the rocker (11), and a cylinder body (8) is provided on the outer side of the piston rod (7), the cylinder body (8) is installed on the upper end surface of the movable plate (6), and the cylinder body (8) moves through the surface of the fixed plate (5).

2. A lower punch chip cutting mechanism according to claim 1, characterized in that: The connecting member includes four connecting rods (10), the top ends of the connecting rods (10) are fixed to the surface edge of the top plate (9), and the bottom ends of the connecting rods (10) slide through the surface of the fixed plate (5) and are fixed to the upper end surface of the movable plate (6).

3. The lower punch chip cutting mechanism according to claim 1, characterized in that: A placement groove (13) is provided on the upper surface of the top plate (9), and a mounting hole (14) is provided on the inner bottom surface of the placement groove (13).

4. A lower punch chip cutting mechanism according to claim 3, characterized in that: The lower surface of the top plate (9) is provided with a punch unit for punching products, and the punch unit is fixed to the mounting hole (14) by bolts.

5. The lower punch chip cutting mechanism according to claim 1, characterized in that: A mounting plate (3) is fixedly provided at one end of the fixing plate (5), a pulley driven by a motor is installed on the mounting plate (3), a transmission wheel (15) fixedly connected to the end of the camshaft (4) is installed on the outer side of the connecting plate (2), and a belt (12) is installed between the transmission wheel (15) and the pulley.

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