Semi-automatic riveting device for cooling fin machining

Abstract

The invention relates to the technical field of cooling fin machining, and discloses a semi-automatic riveting device for cooling fin machining, which comprises a cabinet, a workbench is fixedly connected to the top of the cabinet, a lower die holder is fixedly connected to the top of the workbench through bolts, and a stamping table is fixedly connected to the top of the lower die holder through bolts. First fastening bolts are connected to the two sides and one corner of the middle of the top of the punching table in a threaded mode, threaded connection holes matched with the first fastening bolts are formed in the top of the punching table, the circumferential surfaces of the tops of the three first fastening bolts are slidably sleeved with the same compression table, and three round holes matched with the first fastening bolts are formed in the compression table. According to the invention, the extrusion force and position are accurately controlled through a mechanical structure, the randomness of manual operation is avoided, firm connection and accurate position of a Pin angle and a cooling fin are ensured, the quality problems of infirm riveting, deviation and the like are reduced, and the structural stability and heat dissipation performance of the cooling fin are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of heat sink processing, and in particular to a semi-automatic riveting device for heat sink processing. Background Art

[0002] In electronic device manufacturing, heat sinks are critical heat dissipation components, and their processing quality and efficiency directly impact the performance and stability of electronic products. As the integration of electronic products continues to increase, the requirements for heat dissipation performance of heat sinks become increasingly stringent, posing significant challenges to heat sink processing. Riveting, a crucial step in the heat sink process, securely connects the heat sink to other components and prevents it from falling off and impacting heat dissipation.

[0003] Traditional heat sink riveting methods rely heavily on manual labor, resulting in low production efficiency and difficulty ensuring riveting quality. Problems such as loose rivets and misaligned positions can easily occur, severely impacting the product's heat dissipation performance and overall quality. Furthermore, manual riveting is labor-intensive and requires high operator skills, making it difficult to meet the demands of large-scale, high-efficiency production. Furthermore, while some automated riveting equipment can improve production efficiency, its complex structure, high cost, and difficulty in maintenance make it prohibitively expensive for small and medium-sized enterprises, limiting its widespread application in the heat sink processing industry. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a semi-automatic riveting device for heat sink processing.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A semi-automatic riveting device for heat sink processing, comprising a cabinet, wherein the top of the cabinet is fixedly connected to a workbench, and the top of the workbench is fixedly connected to a lower die base by bolts, and the top of the lower die base is fixedly connected to a stamping table by bolts, and first fastening bolts are screwed on both sides of the middle part of the top of the stamping table and a corner, and a screw hole adapted for the first fastening bolt is opened on the top of the stamping table, and the circumferential surface of the top of three first fastening bolts is slidingly sleeved with the same compression table, and three circular holes adapted for the first fastening bolts are opened on the compression table, and a first circular groove is opened at the bottom of the compression table at each first fastening bolt, and each first fastening bolt is slidingly sleeved with a first spring at the corresponding first circular groove, and two pin angle slots are opened at a corner of the top of the compression table, and two first through-holes are opened at the bottom of the pin angle slot on one side close to the middle part of the compression table, and a first through-hole is opened at the bottom of the other pin angle slot, and the two pin angle slots are of different sizes, and the pin angle slot on the side close to the safety baffle is smaller in length, and the corresponding pin angle is also smaller.

[0006] As a further solution of the present invention, three limiting columns are fixedly connected to the top of the compression platform near the two Pin corner slots, and the limiting columns can limit the heat sink.

[0007] As a further solution of the present invention, lower punching needles are fixedly connected to the three first perforations on the top of the punching table. The lower punching needles can squeeze the protrusions at the bottom of the heat sink to cause deformation, thereby achieving the connection between the heat sink and the Pin angle.

[0008] As a further solution of the present invention, hydraulic cylinders are fixedly installed on both sides of the cabinet, and the output ends of the two hydraulic cylinders slide through the workbench and are fixedly connected to the same top platform. The bottom of the top platform is screwed with an upper mold base near the compression platform by bolts.

[0009] As a further solution of the present invention, a Pin corner rivet punch is slidably provided on the bottom of the upper die base just above the two Pin corner slots, and each Pin corner rivet punch is adapted to the corresponding Pin corner slot. Two rectangular grooves adapted to the Pin corner rivet punch are provided at the bottom of the upper die base, two second through-holes are provided on the Pin corner rivet punch near the middle of the compression table, and a second through-hole is provided on the other Pin corner rivet punch. An upper punching needle is slidably connected to each of the second through-holes, and the top of each upper punching needle is fixedly connected to the bottom of the upper die base. A buffer column is fixedly connected to the side of the bottom of the upper die base away from the Pin corner slot.

[0010] As a further solution of the present invention, the tops of the two Pin corner rivet punches are screwed with a second fastening bolt, and the tops of the two second fastening bolts slide through the top of the upper die seat, and the upper die seat is provided with a circular hole that is compatible with the second fastening bolt. The upper die seat is provided with a second circular groove at the bottom of the two second fastening bolts, and the two second fastening bolts are provided with a second spring at the second circular groove. The bottom of the upper die seat is fixedly connected to the two Pin corner rivet punches, and the upper ejector is close to one side of the vertical plate to facilitate pressing the tip of the Pin corner to avoid instability of the Pin corner during connection.

[0011] As a further solution of the present invention, the workbench is fixedly connected with a vertical plate near the Pin corner slot, and the top of the vertical plate is fixedly connected with a horizontal plate by bolts, and the bottom of the horizontal plate is provided with a Pin corner automatic discharge port near the two Pin corner slots, and the side of the vertical plate near the Pin corner slot is fixedly connected with a safety baffle by bolts.

[0012] The beneficial effects of the present invention are: The present invention adopts technical means such as the Pin corner slot, the compression platform, the first spring, the upper die seat, the lower punching needle, the Pin corner riveting punch, and the upper punching needle. The compression platform is squeezed by the descent of the Pin corner riveting punch, so that the lower punching needle and the upper punching needle are both squeezed with the heat sink, so that the heat sink is limited and deformed, and the circular hole of the Pin corner is cooperated with the heat sink, which effectively solves the problem of difficulty in ensuring the quality of manual operation proposed in the background technology, and then realizes the precise control of the extrusion force and position through the mechanical structure, avoids the randomness of manual operation, ensures that the Pin corner is firmly connected to the heat sink and the position is accurate, reduces quality problems such as loose riveting and deviation, ensures the structural stability and heat dissipation performance of the heat sink, greatly improves the processing volume per unit time compared with manual operation, and meets the needs of large-scale production.

[0013] The present invention provides an upper ejector pin so that the upper ejector pin can squeeze the tip of the pin corner during riveting, thereby avoiding instability of the pin corner during riveting and improving the riveting quality.

[0014] Compared with fully automated equipment, the semi-automatic device has a relatively simple structure, lower cost, and more convenient maintenance. It takes into account the advantages of automated production and the actual investment capacity of small and medium-sized enterprises, and is conducive to promotion and application in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 2 This is a structural schematic diagram of the top of a workbench of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 3 This is a structural schematic diagram of the top of the punching table of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 4 A semi-automatic riveting device for heat sink processing proposed by the present invention Figure 3 A schematic diagram of the structure enlarged at point A; Figure 5 This is a schematic diagram of the structure of a part of the punching table of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 6 This is a schematic structural diagram of a cross-section of a compression table of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 7 This is a structural schematic diagram of the bottom of the upper die base of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 8This is a schematic structural diagram of a cross-section of an upper die base of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 9 This is a structural schematic diagram of a vertical plate of a semi-automatic riveting device for heat sink processing proposed by the present invention; Figure 10 This is a schematic diagram of the relative position structure of the heat sink and two pin corners proposed by the present invention.

[0016] In the figure: 1. Cabinet; 101. Workbench; 102. Hydraulic cylinder; 2. Ejector; 3. Lower die base; 301. Punching table; 302. Compression table; 303. First fastening bolt; 304. Pin corner slot; 305. First perforation; 306. Limiting column; 307. Lower punching needle; 308. First spring; 309. First circular groove; 4. Upper die base; 401. Buffer column; 402. Upper ejector; 403. Pin corner riveting punch; 404. Second perforation; 405. Upper punching needle; 406. Second fastening bolt; 407. Second spring; 408. Second circular groove; 5. Vertical plate; 501. Horizontal plate; 502. Safety baffle; 503. Pin corner automatic discharge port. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described 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.

[0018] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] Reference Figures 1-10A semi-automatic riveting device for heat sink processing includes a cabinet 1, a workbench 101 is fixedly connected to the top of the cabinet 1, and the top of the workbench 101 is fixedly connected to the lower die base 3 by bolts, and the top of the lower die base 3 is fixedly connected to the stamping table 301 by bolts, and the first fastening bolts 303 are screwed on both sides of the middle part of the top of the stamping table 301 and a corner, and the top of the stamping table 301 is provided with screw holes adapted to the first fastening bolts 303, and the top circumferential surface of the three first fastening bolts 303 is slidingly sleeved with the same compression table 302, and the compression table 302 is provided with three circular holes adapted to the first fastening bolts 303, and the bottom of the compression table 302 is located at each first fastening bolt 303. A first circular groove 309 is provided at each fastening bolt 303, and a first spring 308 is slidably sleeved at the corresponding first circular groove 309 of each first fastening bolt 303. The first circular groove 309 provides a storage space for the first spring 308 when the compression platform 302 descends, so that the first spring 308 will not be damaged. When there is no pressure on the compression platform 302, it will rise. Two pin angle slots 304 are provided at a corner of the top of the compression platform 302, and two first through-holes 305 are provided at the bottom of the pin angle slot 304 on one side close to the middle of the compression platform 302, and one first through-hole 305 is provided at the bottom of the other pin angle slot 304.

[0020] In this embodiment, three limiting posts 306 are fixedly connected to the top of the compression platform 302 near the two Pin corner slots 304. The three limiting posts 306 are exactly adapted to the shape of the heat sink, so that the heat sink is aligned with the Pin corners when placed, and the three limiting posts 306 form a rectangular shape.

[0021] In this embodiment, the three first perforations 305 at the top of the stamping platform 301 are fixedly connected with lower stamping needles 307. The setting of the lower stamping needles 307 allows the lower stamping needles 307 to rise relative to the compression platform 302 when the compression platform 302 descends, and can squeeze and deform the protrusions at the bottom of the heat sink, so as to limit the Pin angle and fix it to the heat sink.

[0022] In this embodiment, hydraulic cylinders 102 are fixedly installed on both sides of the cabinet 1. The output ends of the two hydraulic cylinders 102 slide through the workbench 101 and are fixedly connected to the same top platform 2. The bottom of the top platform 2 is screwed with an upper mold base 4 near the compression platform 302 by bolts.

[0023] In this embodiment, a pin corner riveting punch 403 is slidingly provided at the bottom of the upper die base 4, which is located directly above the two pin corner slots 304, and each pin corner riveting punch 403 is adapted to the corresponding pin corner slot 304. Two rectangular grooves adapted to the pin corner riveting punch 403 are provided at the bottom of the upper die base 4. Two second through-holes 404 are provided on the pin corner riveting punch 403 near the middle of the compression platform 302, and a second through-hole 404 is provided on the other pin corner riveting punch 403. An upper punching needle 405 is slidingly connected to each second through-hole 404, and the top of each upper punching needle 405 is fixedly connected to the bottom of the upper die base 4. A buffer column 401 is fixedly connected to the side of the bottom of the upper die base 4 away from the pin corner slot 304, and the buffer column 401 can balance the downward pressure.

[0024] In this embodiment, the tops of the two Pin corner rivet punches 403 are both screwed with second fastening bolts 406, and the tops of the two Pin corner rivet punches 403 are both provided with screw holes adapted to the second fastening bolts 406. The tops of the two second fastening bolts 406 slide through the top of the upper die base 4, and the upper die base 4 is provided with circular holes adapted to the second fastening bolts 406. The upper die base 4 is provided with second circular grooves 408 at the bottoms of the two second fastening bolts 406, and the two second fastening bolts 406 are both sleeved at the second circular grooves 408. A second spring 407 and a second circular groove 408 are provided so that when the Pin corner riveting punch 403 is squeezed, the second spring 407 is squeezed. The second spring 407 can be stored in the second circular groove 408 to ensure the normal operation of the second spring 407 without damage. The bottom of the upper die base 4 is fixedly connected to the two Pin corner riveting punches 403 with an upper ejector pin 402. The setting of the upper ejector pin 402 allows the tip of the Pin corner to be pressed during riveting, so that the Pin corner is stable during the connection process.

[0025] In this embodiment, the workbench 101 is fixedly connected to the vertical plate 5 near the Pin corner slot 304, and the top of the vertical plate 5 is fixedly connected to the horizontal plate 501 by bolts, and the bottom of the horizontal plate 501 near the two Pin corner slots 304 is provided with a Pin corner automatic discharge port 503, and the side of the vertical plate 5 near the Pin corner slot 304 is fixedly connected to the safety baffle 502 by bolts. The setting of the safety baffle 502 makes it inconvenient for the user to place his hand directly under the Pin corner riveting punch 403. The heat sink can be placed through the bottom of the safety baffle 502 to ensure the safety of the user's operation.

[0026] Working principle: The pin angle slot 304 on the side of the device close to the safety baffle 502 is smaller, and the other pin angle slot 304 is larger. The side of the vertical plate 5 away from the compression platform 302 is connected to the pin angle feeding track mechanism. Two pin angles of different sizes are sent to the two pin angle slots 304 through the pin angle automatic discharge port 503. At this time, the heat sink can be manually positioned through the three limit columns 306. There are three small protrusions on the bottom of the heat sink, which just correspond to the three first through-holes 305. At the same time, there are corresponding openings on the pin angle. The hole is formed, and then the hydraulic cylinder 102 is started, so that the top platform 2 and the top platform 2 are rapidly lowered. When the Pin corner riveting punch 403 contacts the heat sink, the compression platform 302 descends along the first fastening bolt 303 under the action of pressure and squeezes the first spring 308. When the first spring 308 is completely contracted in the first circular groove 309, the compression platform 302 contacts the punching platform 301, so that the compression platform 302 will not fall anymore. At this time, the lower punching needle 307 will extend from the first perforation 305, squeezing the protrusion of the heat sink, causing the protrusion to deform, and The opening of the pin corner is filled, so that the pin corner and the heat sink are connected to each other. At the same time, when the pin corner rivet punch 403 squeezes the heat sink, the pin corner rivet punch 403 is squeezed and the second spring 407 is compressed upward, so that the pin corner rivet punch 403 rises relative to the upper die base 4. When the second spring 407 shrinks in the second circular groove 408, the pin corner rivet punch 403 no longer moves. At the same time, the upper punching needle 405 extends from the second through-hole 404 of the pin corner rivet punch 403 to press the top of the heat sink. Press to avoid the lower punching needle 307 squeezing the bottom of the heat sink, which causes a large deformation on the top of the heat sink. At the same time, when the upper die base 4 descends, the two upper ejector pins 402 also descend. The two upper ejector pins 402 descend to squeeze the tip of the Pin angle to ensure that the two Pin angles are relatively stable when connected. After completion, the hydraulic cylinder 102 extends, so that the compression table 302 and the Pin angle riveting punch 403 are reset. At this time, the connected heat sink can be removed, and the new Pin angle will come into the Pin angle slot 304 again.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A semi-automatic riveting device for heat sink processing, comprising a cabinet (1), characterized in that: The cabinet (1) is fixedly connected to a workbench (101) on the top, and the workbench (101) is fixedly connected to a lower die base (3) on the top by bolts. The lower die base (3) is fixedly connected to a punching table (301) on the top by bolts. First fastening bolts (303) are screwed on both sides of the middle part of the top of the punching table (301) and a corner. The top of the punching table (301) is provided with a screw hole adapted to the first fastening bolt (303). The top circumferential surface of the three first fastening bolts (303) is provided with a same compression table (302). The compression table (302) is provided with three screw holes adapted to the first fastening bolts. The compression platform (302) is provided with a circular hole that matches the bolt (303), and a first circular groove (309) is provided at the bottom of each first fastening bolt (303), and a first spring (308) is provided on the sliding sleeve of each first fastening bolt (303) located at the corresponding first circular groove (309), two pin angle slots (304) are provided at a corner of the top of the compression platform (302), and two first through holes (305) are provided at the bottom of the pin angle slot (304) on one side close to the middle of the compression platform (302), and one first through hole (305) is provided at the bottom of the other pin angle slot (304).

2. A semi-automatic riveting device for heat sink processing according to claim 1, characterized in that: Three limiting columns (306) are fixedly connected to the top of the compression platform (302) near the two pin angle slots (304).

3. A semi-automatic riveting device for heat sink processing according to claim 1, characterized in that: The top of the punching platform (301) is fixedly connected to three first perforations (305) with lower punching needles (307).

4. A semi-automatic riveting device for heat sink processing according to claim 1, characterized in that: Hydraulic cylinders (102) are fixedly installed on both sides of the cabinet (1), and the output ends of the two hydraulic cylinders (102) slide through the workbench (101) and are fixedly connected to the same top platform (2). The bottom of the top platform (2) is screwed with an upper die seat (4) near the compression platform (302) through bolts.

5. A semi-automatic riveting device for heat sink processing according to claim 4, characterized in that: The bottom of the upper die base (4) is located just above the two pin corner slots (304) and is slidably provided with a pin corner riveting punch (403), and each pin corner riveting punch (403) is adapted to the corresponding pin corner slot (304). The bottom of the upper die base (4) is provided with two rectangular slots adapted to the pin corner riveting punch (403), and the pin corner riveting punch (403) near the middle of the compression platform (302) is provided with two second through-holes (404), and the other pin corner riveting punch (403) is provided with a second through-hole (404), and each of the second through-holes (404) is slidably connected to an upper punching needle (405), and the top of each upper punching needle (405) is fixedly connected to the bottom of the upper die base (4), and a buffer column (401) is fixedly connected to the side of the bottom of the upper die base (4) away from the pin corner slot (304).

6. A semi-automatic riveting device for heat sink processing according to claim 5, characterized in that: The tops of the two Pin corner riveting punches (403) are both screwed with second fastening bolts (406), and the tops of the two second fastening bolts (406) slide through the top of the upper die base (4). The upper die base (4) is provided with circular holes that are compatible with the second fastening bolts (406). The upper die base (4) is provided with second circular grooves (408) at the bottoms of the two second fastening bolts (406), and the two second fastening bolts (406) are both sleeved with second springs (407) at the second circular grooves (408). The bottom of the upper die base (4) is fixedly connected with upper ejector pins (402) near the two Pin corner riveting punches (403).

7. The semi-automatic riveting device for heat sink processing according to claim 1, characterized in that: The workbench (101) is fixedly connected to a vertical plate (5) near the pin corner slot (304), and the top of the vertical plate (5) is fixedly connected to a horizontal plate (501) by bolts, and the bottom of the horizontal plate (501) is provided with a pin corner automatic discharge port (503) near the two pin corner slots (304), and a safety baffle (502) is fixedly connected to one side of the vertical plate (5) near the pin corner slot (304) by bolts.

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