Laminating and riveting machine for machining cooling fins

Abstract

The utility model discloses a laminating and riveting machine for processing radiating fins, which comprises a lower die, the surface of the top end of the lower die is sequentially provided with a stamping die section, a riveting stamping die section, an idle step section and a blanking stamping die section, the inner wall of the blanking stamping die section is provided with two rotating grooves, the rotating grooves are internally and rotatably provided with rotating frames, and the rotating frames are connected with the lower die. A plurality of spring grooves are formed in the outer surface of the rotating frame, and first blocking plates are installed in the spring grooves in a sliding mode. When a material belt is subjected to blanking stamping through the blanking stamping die section, stamped cooling fins can firstly fall on the surface of the first blocking plate and are blocked through the first blocking plate, the cooling fins are riveted above the first blocking plate in a stacked mode, after a certain number of cooling fins are riveted in a stacked mode, the first blocking plate can be driven by the rotating frame to rotate by rotating the rotating frame, and then the cooling fins can be subjected to blanking stamping through the blanking stamping die section. And therefore, the cooling fins above the first barrier plate fall downwards and fall to the surface of the second barrier plate for buffering, and the situation that the cooling fins directly fall into the discharging opening and fall apart is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat sink stacking and riveting, in particular to a stacking and riveting machine for processing heat sinks. Background Art

[0002] A heat sink is a device that dissipates heat from heat-prone electronic components in electrical appliances. It's typically made of aluminum alloy, brass, or bronze in the form of plates, sheets, or multiple sheets. For example, a computer's CPU uses a fairly large heat sink, as do the power and line transistors in televisions and the power amplifier tubes in amplifiers. Generally, a layer of thermally conductive silicone grease is applied to the contact surface between the electronic component and the heat sink to more effectively conduct heat from the component to the heat sink, where it is then dissipated into the surrounding air.

[0003] During the processing of heat sinks, stack riveting is usually required to rivet multiple heat sinks together to form a component.

[0004] When using the existing heat sink stack riveting machine, the number of stack rivets required for different heat sinks is often different, resulting in the device being unable to adjust the number of stack rivets for each heat sink according to demand, and the heat sink is prone to fall apart when unloading after stacking riveting; therefore, it does not meet the existing needs. In this regard, we propose a stack riveting machine for heat sink processing. Utility Model Content

[0005] The purpose of the present utility model is to provide a stack riveting machine for processing heat sinks, so as to solve the problems of the heat sink stack riveting machine proposed in the above background technology, such as the different numbers of stack rivets required for different heat sinks, which often lead to the device being unable to adjust the number of stack rivets for each heat sink according to demand, and the heat sink being prone to falling apart when unloading after stack riveting.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stack riveting machine for processing heat sinks, comprising a lower die, the top surface of the lower die being provided with a stamping die section, a riveting die section, an idle step section and a blanking die section in sequence, the inner wall of the blanking die section being provided with two rotating grooves, a rotating frame being rotatably installed inside the rotating grooves, a plurality of spring grooves being provided on the outer surface of the rotating frame, a first blocking plate being slidably installed inside the spring grooves, a compression spring being movably installed between the first blocking plate and the inside of the spring grooves, and a slope being provided on one side surface of the first blocking plate.

[0007] Preferably, two sliding grooves are provided inside the blanking die section near the bottom end, a second blocking plate is slidably installed inside the sliding groove, an extrusion spring is movably installed between the second blocking plate and the inside of the sliding groove, and an electromagnetic coil is provided on the outside of the sliding groove.

[0008] Preferably, a servo motor is provided on one side of the axis of the rotating frame, an output end of the servo motor is connected to the axis of the rotating frame through a coupling, and the servo motor is electrically connected to the electromagnetic coil.

[0009] Preferably, the surfaces of the two first blocking plates and the second blocking plate are both provided with multiple heat sinks, an upper mold is provided above the lower mold, a plurality of positioning holes are provided on the outer side of the top surface of the lower mold, and a plurality of positioning rods are provided at the bottom end of the upper mold, and the positioning rods are movably inserted into the interior of the positioning holes.

[0010] Preferably, a plurality of support frames are movably mounted on the bottom end of the lower die, the bottom ends of the stamping die section and the riveting die section are both provided with waste outlets, and the bottom end of the blanking die section is provided with a discharge port.

[0011] Preferably, both sides of the top of the stamping die section, riveting die section, idle step section and blanking die section are connected with a material conveying plate by bolts, a punching head is provided at the bottom end of the upper die near the stamping die section, a riveting punch is provided at the bottom end of the upper die near the riveting die section, and a square punch is provided at the bottom end of the upper die near the blanking die section.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The present invention cooperates with the first blocking plate and the second blocking plate so that when the device blanks and punches the material strip through the blanking die section, the punched heat sink fins first fall on the surface of the first blocking plate and are blocked by the first blocking plate, so that the heat sink fins are stacked and riveted above the first blocking plate. After a certain number of stacking rivets, the rotating frame can be rotated to drive the first blocking plate to rotate, thereby causing the heat sink fins above the first blocking plate to fall downward and fall onto the surface of the second blocking plate for buffering, thereby preventing them from falling directly into the discharge port and falling apart.

[0014] 2. The utility model cooperates with the rotating frame and the first baffle plate so that when the device is in use, the angle of the first baffle plate can be changed by rotating the rotating frame, thereby changing the distance between the first baffle plate and the blanking die section, so that the device can rotate the position of the first baffle plate according to the required number of stacked rivets of the heat sink, thereby avoiding the situation where the number of stacked rivets of the heat sink is too large. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional front view of the entire utility model;

[0017] Figure 3 It is a sectional side view of the entire utility model;

[0018] Figure 4 For this utility model Figure 3 Schematic diagram of the local structure of part A.

[0019] In the figure: 1. Lower die; 2. Stamping die section; 3. Riveting die section; 4. Step section; 5. Blanking die section; 6. Upper die; 7. Positioning hole; 8. Positioning rod; 9. Material conveyor plate; 10. Support frame; 11. Discharge port; 12. Waste outlet; 13. Rotating groove; 14. Rotating frame; 15. First blocking plate; 16. Heat sink; 17. Inclined surface; 18. Spring groove; 19. Compression spring; 20. Sliding groove; 21. Second blocking plate; 22. Extrusion spring; 23. Electromagnetic coil. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] See also Figures 1 to 4 The utility model provides an embodiment: a stack riveting machine for processing heat sinks, including a lower die 1, the top surface of the lower die 1 is sequentially provided with a stamping die section 2, a riveting die section 3, an idle step section 4 and a blanking die section 5, the inner wall of the blanking die section 5 is provided with two rotating grooves 13, the interior of the rotating grooves 13 is rotatably installed with a rotating frame 14, the outer surface of the rotating frame 14 is provided with a plurality of spring grooves 18, the interior of the spring grooves 18 are slidably installed with a first blocking plate 15, a compression spring 19 is movably installed between the first blocking plate 15 and the interior of the spring grooves 18, and one side surface of the first blocking plate 15 is provided with an inclined surface 17.

[0022] Through the cooperation between the rotating frame 14 and the first blocking plate 15, when the device is in use, the angle of the first blocking plate 15 can be changed by rotating the rotating frame 14, thereby changing the distance between the first blocking plate 15 and the blanking die section 5, so that the device can rotate the position of the first blocking plate 15 according to the required number of stacked rivets of the heat sink 16, thereby avoiding the situation where the number of stacked rivets of the heat sink 16 is too large.

[0023] Two sliding grooves 20 are provided near the bottom end of the blanking die section 5. A second blocking plate 21 is slidably installed inside the sliding groove 20. An extrusion spring 22 is movably installed between the second blocking plate 21 and the inside of the sliding groove 20. An electromagnetic coil 23 is provided on the outside of the sliding groove 20.

[0024] Through the cooperation of the first baffle plate 15 and the second baffle plate 21, when the device performs blanking and punching on the material strip through the blanking die section 5, the punched-out heat sink 16 can first fall on the surface of the first baffle plate 15 and be blocked by the first baffle plate 15, so that the heat sink 16 is riveted above the first baffle plate 15. After a certain number of rivetings, the rotating frame 14 can be rotated to drive the first baffle plate 15 to rotate, thereby causing the heat sink 16 above the first baffle plate 15 to fall downward and fall onto the surface of the second baffle plate 21 for buffering, thereby avoiding falling directly into the inside of the discharge port 11 and falling apart.

[0025] A servo motor is provided on one side of the axis of the rotating frame 14 . The output end of the servo motor is connected to the axis of the rotating frame 14 via a coupling. The servo motor is electrically connected to the electromagnetic coil 23 .

[0026] The surfaces of the two first blocking plates 15 and the surface of the second blocking plate 21 are both provided with multiple heat sinks 16, an upper mold 6 is provided above the lower mold 1, a plurality of positioning holes 7 are provided on the outer side of the top surface of the lower mold 1, and a plurality of positioning rods 8 are provided at the bottom end of the upper mold 6, which are movably inserted into the interior of the positioning holes 7.

[0027] A plurality of support frames 10 are movably mounted on the bottom of the lower die 1 . The bottom ends of the punching die section 2 and the riveting die section 3 are both provided with waste outlets 12 , and the bottom end of the blanking die section 5 is provided with a discharge port 11 .

[0028] The top sides of the stamping die section 2, the riveting die section 3, the idle step section 4 and the blanking die section 5 are all connected with the material belt conveyor plate 9 by bolts. A punching head is provided at the bottom end of the upper die 6 near the stamping die section 2, a riveting punch is provided at the bottom end of the upper die 6 near the riveting die section 3, and a square punch is provided at the bottom end of the upper die 6 near the blanking die section 5.

[0029] When the stacking riveting machine for heat sink processing is in use, the material strip of the heat sink 16 can be transported by the material strip conveyor plate 9, so that the material strip of the heat sink 16 passes through the positions of the stamping die section 2, the riveting die section 3, the idle step section 4 and the blanking die section 5 in sequence. When at the position of the stamping die section 2, the material strip can be punched by the punching head at the bottom end of the upper die 6. At this time, the punched waste will be discharged through the waste outlet 12. Then, when at the position of the riveting die section 3, the material strip can be punched by the riveting punch at the bottom end of the upper die 6, so that the surface of the material strip is punched out with a riveting groove. Then, at the position of the blanking die section 5, the square punch at the bottom end of the upper die 6 is used to punch the heat sink 16 out and drop it into the interior of the blanking die section 5. At this time, each heat sink 16 will be riveted in sequence through the rivet groove punched out at the position of the riveting die section 3, so as to realize the stacking riveting of the heat sink 16.

[0030] When the device is blanking and punching the material strip through the blanking die section 5, the punched heat sink 16 can first fall on the surface of the first blocking plate 15 and be blocked by the first blocking plate 15, so that the heat sink 16 is riveted above the first blocking plate 15. After a certain number of rivetings, the rotating frame 14 can be rotated to drive the first blocking plate 15 to rotate, thereby causing the heat sink 16 above the first blocking plate 15 to fall downward and fall onto the surface of the second blocking plate 21 for buffering, thereby preventing it from falling directly into the inside of the discharge port 11 and falling apart.

[0031] When the riveted heat sink 16 needs to be discharged, the electromagnetic coil 23 can be energized to pull the second blocking plate 21 back to the inside of the sliding groove 20, thereby releasing the second blocking plate 21 from limiting the heat sink 16. At this time, the heat sink 16 located at the top of the second blocking plate 21 will fall to the inside of the discharge port 11 and be discharged along the discharge port 11.

[0032] The angle of the first baffle plate 15 can be changed by rotating the rotating frame 14, thereby changing the distance between the first baffle plate 15 and the blanking die section 5, so that the device can rotate the position of the first baffle plate 15 according to the required number of rivets of the heat sink 16, thereby avoiding the situation where the number of rivets of the heat sink 16 is too large.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A stack riveting machine for processing heat sinks, comprising a lower die (1), characterized in that: The top surface of the lower die (1) is provided with a stamping die section (2), a riveting die section (3), an idle step section (4) and a blanking die section (5) in sequence, and the inner wall of the blanking die section (5) is provided with two rotating grooves (13), and a rotating frame (14) is rotatably installed inside the rotating grooves (13), and the outer surface of the rotating frame (14) is provided with a plurality of spring grooves (18), and a first blocking plate (15) is slidably installed inside the spring grooves (18), and a compression spring (19) is movably installed between the first blocking plate (15) and the inside of the spring grooves (18), and a side surface of the first blocking plate (15) is provided with an inclined surface (17).

2. The stack riveting machine for heat sink processing according to claim 1, characterized in that: Two sliding grooves (20) are provided near the bottom end of the blanking die section (5), and a second blocking plate (21) is slidably installed inside the sliding grooves (20). An extrusion spring (22) is movably installed between the second blocking plate (21) and the inside of the sliding grooves (20), and an electromagnetic coil (23) is provided on the outside of the sliding grooves (20).

3. The stack riveting machine for heat sink processing according to claim 1, characterized in that: A servo motor is provided on one side of the axis of the rotating frame (14); an output end of the servo motor is connected to the axis of the rotating frame (14) via a coupling; and the servo motor is electrically connected to the electromagnetic coil (23).

4. The stack riveting machine for heat sink processing according to claim 1, characterized in that: The surfaces of the two first blocking plates (15) and the surface of the second blocking plate (21) are both provided with a plurality of heat sinks (16); an upper mold (6) is provided above the lower mold (1); a plurality of positioning holes (7) are provided on the outer side of the top surface of the lower mold (1); a plurality of positioning rods (8) are provided at the bottom end of the upper mold (6); and the positioning rods (8) are movably inserted into the interior of the positioning holes (7).

5. The stack riveting machine for heat sink processing according to claim 1, characterized in that: A plurality of support frames (10) are movably mounted on the bottom end of the lower die (1), waste outlets (12) are provided at the bottom ends of the punching die section (2) and the riveting die section (3), and a discharge port (11) is provided at the bottom end of the blanking die section (5).

6. The stack riveting machine for heat sink processing according to claim 4, characterized in that: The top ends of the punching die section (2), the riveting die section (3), the idle step section (4) and the blanking die section (5) are all connected to a material conveying plate (9) by bolts. A punching head is provided at the bottom end of the upper die (6) near the punching die section (2), a riveting punch is provided at the bottom end of the upper die (6) near the riveting die section (3), and a square punch is provided at the bottom end of the upper die (6) near the blanking die section (5).

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