Multifunctional punching machine for cooling fins and working method of multifunctional punching machine

Abstract

The invention discloses a multifunctional punching machine for cooling fins and a working method of the multifunctional punching machine, and relates to the technical field of cooling fin production equipment.The multifunctional punching machine for the cooling fins comprises a lower machine table, a lower supporting plate arranged on the lower machine table, lower foot pads arranged on the lower supporting plate, a lower die base arranged on the lower foot pads, and a lower base plate arranged on the lower die base; an upper die plate, a stopping plate, an upper clamping plate, an upper base plate, an upper die base and an upper machine table are sequentially arranged on the lower die plate; a material guide device is arranged on one side of the lower die holder; discharging springs and floating material dual-purpose pins are arranged on the upper die base, machined cooling fins are stripped, the floating material dual-purpose pins can correct the positions of the cooling fins, the positioning pins arranged at the four corners of the upper die plate are matched, the accuracy of the positions of the cooling fins is guaranteed, and through the arrangement of an upper base plate, a lower base plate and a stopping plate, the cooling fins are prevented from being damaged. Punching force and side force generated during machining are dispersed, the stability of the overall structure of the punching machine is protected, deformation is prevented, and the machining quality of the cooling fins is improved.

Description

Technical Field

[0001] The invention relates to the technical field of heat sink production equipment, in particular to a multifunctional punching machine for heat sinks and a working method thereof. Background Art

[0002] A heat sink is a device that dissipates heat from heat-prone electronic components in electrical appliances. It is usually made of aluminum alloy, copper, etc. in the form of plates, sheets, or multiple sheets. For example, a computer's CPU central processing unit uses a fairly large heat sink, as do power tubes, line tubes, and amplifier tubes in a TV. Generally, a heat sink should be coated with a layer of thermal conductive silicone grease on the contact surface between the electronic component and the heat sink during use, so that the heat generated by the component can be more effectively transferred to the heat sink, and then dissipated to the surrounding air through the heat sink. Figure 1 As shown, there is a corrugated heat sink, which has a larger surface area than a flat heat sink when arranged on a radiator, and thus has a better heat dissipation effect. In the existing process, stamping or bending processes are often used to process such heat sinks.

[0003] Prior art CN 107263110 A discloses a multifunctional preparation device for heat sinks, which uses a feeding mechanism, a stamping mechanism and a receiving mechanism. The feeding mechanism includes a feeding table, a feeding rack capable of rotating and feeding, and a stepping motor, and the stepping motor provides rotational power for the feeding rack. The stamping mechanism includes a stamping plate, and the stamping plate is provided with an initial stirrup hole cutter, a primary punch hole repairing cutter, a secondary punch hole repairing cutter, a waist hole trimming cutter, a trimming cutter, and a folding cutter in sequence according to the stamping process. The device is not only highly automated, but also can perform multiple steps simultaneously.

[0004] Although the device realizes multiple steps simultaneously, the heat sink is easily stuck in the stamping device after processing and is not easy to disengage. The positioning device has a complex structure and the punching machine head is difficult to replace. In addition, the stamping plate of the device is easily deformed due to pressure after long-term use, which affects the subsequent processing quality. Therefore, it is necessary to improve the heat sink stamping machine. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional stamping machine for heat sinks and a working method thereof to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional stamping machine for heat sink and a working method thereof, comprising a lower machine table, a lower support plate is installed on the lower machine table through a first fixed block, a plurality of lower pads are arranged on the upper side of the lower support plate, a lower die seat is arranged above the lower pads, a lower pad is fixedly installed on the lower die seat, a lower template is fixedly installed above the lower pad, wherein the lower die seat is fixedly installed with the lower part of the limiting column at the four corners, a material guide device is fixedly installed at the shorter end of the lower die seat, and two longer side walls of the lower die seat are respectively provided with two hanging rings; the lower die seat corresponds to the position of the material strip There are multiple floating material dual-purpose pins fixed in position, and the floating material dual-purpose pins include an upper rod body and a lower rod body, the upper rod body and the lower rod body are connected by a spring, an annular notch is provided at the top position of the upper rod body, an upper die seat is provided below the upper machine table, and is fixed by second fixed blocks provided on both sides, an upper pad is provided below the upper die seat, an upper clamping plate is fixed below the upper pad, a stop plate is fixed below the upper clamping plate, an upper template is fixed below the stop plate, and upper parts of limit columns are provided at the four corners of the upper die seat, and the upper parts of the limit columns and the lower parts of the limit columns correspond to each other up and down.

[0007] Preferably, four outer guide column sleeves are fixed on the inner side of the upper part of the limit column on the upper mold base, an inner guide column sleeve is fixed inside the edge of the outer guide column sleeve, a positioning pin is fixed on the side of the inner guide column sleeve close to the short side, and an equal height screw and a fixing screw are fixed on the side of the inner guide column sleeve close to the long side, and a detection device is arranged at the edge position of the upper mold base.

[0008] Preferably, the upper pad is provided with a plurality of unloading spring holes, the unloading spring holes are evenly distributed, inner guide column sleeve holes are provided at the four corner positions of the upper pad, each inner guide column sleeve hole is provided with a positioning pin hole near the short side, each inner guide column sleeve hole is provided with an equal height screw hole near the long side, fixing screw holes are provided next to the equal height screw holes, and a punch hole is provided at the central position of the upper pad.

[0009] Preferably, the sizes of the upper clamping plate, the stop plate, and the upper template are consistent with the upper pad, and the opening positions and sizes are consistent with the upper pad. In addition, multiple insert holes are opened on both sides of the punch hole, and the insert hole sizes match the inserts.

[0010] Preferably, fixing holes are evenly opened on both sides of the long side of the top surface of the lower die seat, an outer guide column is fixed to the lower part of the limiting column arranged on the lower die seat, a unloading spring is fixedly installed on the lower die seat, the position of the unloading spring matches the unloading spring hole, and a plurality of floating dual-purpose pins are fixed at the position of the lower die seat corresponding to the position of the material belt.

[0011] Preferably, the four corners of the lower template are respectively provided with screw sleeve holes of equal height, and the remaining hole positions match the hole positions of the upper template.

[0012] Preferably, the notch at the top of the floating material dual-purpose pin is used to place the material belt, and the spring arranged at the bottom can assist in removing the material. The notches of the two relatively arranged floating material dual-purpose pins contact the material belt to form positioning points, which play a role in fixing and correcting the material belt.

[0013] Preferably, a hole for placing a punch is opened in the upper clamping plate, the top of the punch is against the upper pad, the punch is clamped in the upper clamping plate through a pressing block, and is fixed by screws.

[0014] Preferably, the control method of a multifunctional stamping machine for heat sinks according to the present invention comprises the following steps: Step S1, confirm the heat sink model to be processed, replace the corresponding punch and insert, and start the punching machine; Step S2, the heat sink sheet for processing enters from the material guide device, and after being corrected by the floating material dual-purpose pin, it continues to move along the material belt direction, and is stamped and formed by various shape inserts and punches on the upper and lower machines. The elastic force of the spring separates the heat sink sheet from the lower press, and is transmitted out through the material belt; Step S3, during the working process, the detection device performs real-time detection. If misalignment occurs, the punching machine is stopped immediately, and the position is corrected and then restarted to continue working.

[0015] Compared with the prior art, the invention has the following beneficial effects: by using multiple sets of floating material dual-purpose pins, the position of the material strip can be corrected, and the material strip can be fixed and the material strip can be assisted in stripping; The device prevents the punching machine from deforming by arranging upper and lower pads, an upper pad and a stopper plate; The punch of the device is fixed by a pressing block, and the punch can be replaced at any time, which is convenient and quick. The inserts used can be selected according to actual conditions, realizing multifunctional integration. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 A bottom view of the upper half of the punching machine of the present invention; Figure 3 A bottom view of the upper pad structure of the present invention; Figure 4 A bottom view of the upper clamping plate structure of the present invention; Figure 5 It is a schematic diagram of the lower part of the structure of the punching machine of the present invention; Figure 6 This is a schematic diagram of the structure of the dual-purpose pin for floating material of the present invention; Figure 7 It is a schematic diagram of the punch fixing method of the present invention; In the figure: 1, lower machine table; 2, upper machine table; 3, lower support plate; 4, upper die seat; 401, outer guide post sleeve; 402, upper part of limit post; 403, discharge spring hole; 404, inner guide post sleeve; 4041, inner guide post sleeve hole; 405, insert; 4051, insert hole; 406, positioning pin; 4061, positioning pin hole; 407, equal height screw; 4071, equal height screw hole; 408, fixing screw; 4081, fixing screw hole; 409, punch; 4091, punch hole; 410, floating material dual-purpose pin hole; 5, upper pad; 6 , upper clamping plate; 7, stop plate; 8, upper template; 9, lower template; 901, unloading spring; 902, floating material dual-purpose pin; 903, equal height screw sleeve hole; 904, annular notch; 905, upper rod body; 906, lower rod body; 10, lower pad; 11, lower die base; 1101, outer guide column; 1102, fixing hole; 12, lower pad; 13, first fixed block; 14, second fixed block; 15, lower part of limit column; 16, material guiding device; 17, lifting ring; 18, detection device; 19, punch; 20, pressure block; 21, screw. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1The present invention provides a technical solution: a multifunctional stamping machine for heat sinks, comprising a lower machine table 1, a lower support plate 3 is installed on the lower machine table 1 through a first fixed block 13, the lower support plate 3 is convenient for quickly positioning and installing the mold, and convenient for coding the mold, a plurality of lower pads 12 are arranged on the upper surface of the lower support plate 3, the lower pads 12 can be replaced with pads of different heights according to needs, a lower die seat 11 is arranged above the lower pads 12, the lower die seat 11 is used to place the lower die insert, ensure the accuracy of the position of the processed material, and withstand the lateral force during punching and shearing, The lower die base 11 is fixedly mounted with a lower pad 10, which is used to withstand the force generated when the lower die insert is punched to prevent the lower die base from being dented or deformed. A lower mold plate 9 is fixedly mounted above the lower pad 10, wherein the lower die base 11 is fixedly mounted with a lower portion 15 of a limiting column at the four corners, and a material guide device 16 is fixed at the shorter end of the lower die base 11, and the material guide device 16 can realize automatic loading. Two longer side walls of the lower die base 11 are respectively provided with two hanging rings 17 for easy disassembly; an upper die base is provided below the upper machine table 2. 4, fixed by the second fixing blocks 14 arranged on both sides, an upper pad 5 is arranged below the upper die seat 4, which is used to bear the force of the punch or insert during the stamping process to avoid the upper die seat from being dented or deformed, and an upper clamping plate 6 is fixed below the upper pad 5, which is used to fix various punches, inserts, and inner guide pillars to ensure the position and accuracy of the parts, and it is positioned with the upper die seat by a positioning pin 406, and a stopper plate 7 is fixed below the upper clamping plate 6, which is used to fix the inserts, bearings on the stripping plate Due to the concentrated stress generated by the forming inserts during the production process, an upper template 8 is fixedly provided under the stop plate 7. The upper template 8 is used to place the inserts to ensure the accuracy of the position. When the punch shearing is completed, the punch is separated from the stamping material by the force provided by the unloading spring 901. The four corners of the upper die seat 4 are respectively provided with upper limit columns 402. The upper limit column 402 and the lower limit column 15 correspond to each other in position, which prevents damage to the mold due to incorrect mold setting and protects the mold and internal inserts.

[0019] In this embodiment, the upper part of the punching machine is structured as follows: Figure 2 As shown, four outer guide column sleeves 401 are fixedly provided on the inner side of the upper part 402 of the limit column on the upper mold base 4, wherein the outer guide column 1101 and the outer guide column sleeve 401 are mainly used for guiding the upper and lower molds to ensure the accurate relative position of the upper and lower molds, and an inner guide column sleeve 404 is fixed inside the edge of the outer guide column sleeve 401, and the inner guide column is mainly used for guiding between each template and the upper and lower molds. The inner guide column sleeve 404 is fixed with a positioning pin 406 near the short side for positioning with the upper clamping plate 6, and the inner guide column sleeve 404 is fixed with a contour screw 407 and a fixing screw 408 near the long side, wherein the contour screw 407 generally adopts an internal thread type, which can be used to fix the upper template 8 and can also be easily disassembled.

[0020] In this embodiment, the upper pad structure is as follows Figure 3 As shown, the upper pad 5 is provided with a plurality of unloading spring holes 403, and the unloading spring holes 403 are evenly distributed, and their positions match the unloading spring 901. Inner guide column sleeve holes 4041 are provided at the four corner positions of the upper pad 5, and each inner guide column sleeve hole 4041 is provided with a locating pin hole 4061 near the short side, and the locating pin hole 4061 matches the locating pin 406, and each inner guide column sleeve hole 4041 is provided with an equal-height screw hole 4071 near the long side, and a fixing screw hole 4081 is provided next to the equal-height screw hole 4071, and a punch hole 4091 is provided at the central position of the upper pad 5, and the punch can be replaced with different models at any time according to personal needs.

[0021] In this embodiment, the upper splint structure is as follows Figure 4 As shown, the sizes of the upper clamping plate 6, the stop plate 7, and the upper template 8 are consistent with the upper pad 5, and the opening position and size are consistent with the upper pad 5. In addition, a plurality of insert holes 4051 are opened on both sides of the punch hole 4091, and the size of the insert hole 4051 matches the insert 405. The insert 405 includes bending, punching, cutting, grooves, etc., and can be replaced and used according to production needs.

[0022] In this embodiment, the structure below the punching machine is as follows: Figure 5 As shown, fixing holes 1102 are evenly opened on both sides of the long side of the top surface of the lower die base 11, and an outer guide column 1101 is fixed next to the lower part 15 of the limit column arranged on the lower die base 11. The outer guide column 1101 is used to align the upper and lower dies. A discharge spring 901 is fixedly installed on the lower die base 11. The rebound force of the discharge spring 901 separates the processed material plate and the press. The position of the discharge spring 901 matches the discharge spring hole 403. A plurality of floating dual-purpose pins 902 are fixed at the positions corresponding to the two sides of the lower die base 11 and the material belt. The floating dual-purpose pins 902 play a guiding role and a discharge role when the mold is fed.

[0023] In this embodiment, the floating material dual-purpose pin structure is as follows Figure 6 As shown, an annular notch 904 is provided on the top of the upper rod 905, and the material plate is placed in the annular notch 904. The annular notches of the left and right rods position the material plate. The upper rod 905 and the lower rod 906 are connected by a spring. Since the material plate is in the annular notch 904, the material plate is stuck in the upper part of the annular notch 904 when the punching machine is pressing the die, and the spring is compressed. After the pressing is completed, the spring recovers after there is no pressure, generating an upward rebound force, and the material plate is stuck in the lower part of the annular notch 904 and separated from the lower mold, thereby achieving the effect of auxiliary material removal.

[0024] In this embodiment, the punch installation structure is as follows: Figure 7As shown, a hole for placing a punch 19 is opened in the upper clamp plate 6. After the punch 19 is inserted into the hole, the top thereof abuts against the upper pad 5. A notch is provided at the contact portion between the punch 19 and the lower bottom surface of the upper clamp plate 6. The shape of the pressing block 20 is complementary to the notch. The punch 19 is clamped in the upper clamp plate 6 through the pressing block 20, and the pressing block 20 is fixed again by a screw 21.

[0025] The present invention also provides a control method for a multifunctional punching machine for a heat sink, the method comprising the following steps: Step S1, confirm the heat sink model to be processed, replace the corresponding punch and insert, and start the punching machine; Step S2, the heat sink sheet for processing enters from the material guide device, and after being corrected by the floating material dual-purpose pin, it continues to move along the material belt direction, and is stamped and formed by various shape inserts and punches on the upper and lower machines. The elastic force of the spring separates the heat sink sheet from the lower press, and is transmitted out through the material belt; Step S3, during the working process, the detection device performs real-time detection. If misalignment occurs, the punching machine is stopped immediately, and the position is corrected and then restarted to continue working.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all changes within the meaning and range of equivalents of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multifunctional punching machine for heat sink, characterized in that: The invention comprises a lower machine platform (1), on which a lower support plate (3) is mounted via a first fixed block (13), a plurality of lower pads (12) are arranged on the upper surface of the lower support plate (3), a lower die base (11) is arranged above the lower pads (12), a lower pad (10) is fixedly mounted on the lower die base (11), a lower mold plate (9) is fixedly mounted above the lower pad (10), wherein the lower corners of the lower die base (11) are fixedly mounted with the lower portion of a limiting column (15), a material guide device (16) is fixedly mounted at the shorter end of the lower die base (11), and two longer side walls of the lower die base (11) are respectively provided with two suspension rings (17); a plurality of floating material dual-purpose pins (902) are fixedly mounted at positions of the lower die base (11) corresponding to the positions of the material strip, and the floating material dual-purpose pins (902) are fixedly mounted at the lower die base (11) and the lower mold plate (902) is fixedly mounted at the lower die base (11). ) comprises an upper rod body (905) and a lower rod body (906), wherein the upper rod body (905) and the lower rod body (906) are connected by a spring, and an annular notch (904) is provided at the top of the upper rod body (905). An upper die seat (4) is provided below the upper machine table (2), and is fixed by second fixing blocks (14) provided on both sides. An upper pad (5) is provided below the upper die seat (4), an upper clamping plate (6) is fixedly provided below the upper pad (5), a stop plate (7) is fixedly provided below the upper clamping plate (6), an upper mold plate (8) is fixedly provided below the stop plate (7), and an upper limit column upper part (402) is provided at the four corners of the upper die seat (4), and the upper limit column upper part (402) and the lower limit column lower part (15) are located in corresponding positions.

2. A multifunctional punching machine for heat sink according to claim 1, characterized in that: Four outer guide column sleeves (401) are fixedly provided on the inner side of the upper part (402) of the limiting column on the upper die seat (4), an inner guide column sleeve (404) is fixed inside the edge of the outer guide column sleeve (401), a positioning pin (406) is fixed on the side of the inner guide column sleeve (404) close to the short side, and an equal height screw (407) and a fixing screw (408) are fixed on the side of the inner guide column sleeve (404) close to the long side. A detection device (18) is provided at the edge of the upper die seat (4).

3. The multifunctional punching machine for heat sink according to claim 1, characterized in that: The upper pad (5) is provided with a plurality of discharge spring holes (403), the discharge spring holes (403) being evenly distributed, inner guide post sleeve holes (4041) being provided at four corner positions of the upper pad (5), each inner guide post sleeve hole (4041) being provided with a positioning pin hole (4061) near a short side, each inner guide post sleeve hole (4041) being provided with an equal height screw hole (4071) near a long side, a fixing screw hole (4081) being provided next to the equal height screw hole (4071), and a punch hole (4091) being provided at a central position of the upper pad (5).

4. The multifunctional punching machine for heat sink according to claim 1, characterized in that: The sizes of the upper clamping plate (6), the stop plate (7) and the upper template (8) are consistent with those of the upper pad (5), and the positions and sizes of the openings are consistent with those of the upper pad (5). In addition, a plurality of insert holes (4051) are opened on both sides of the punch hole (4091), and the sizes of the insert holes (4051) match those of the inserts (405).

5. The multifunctional punching machine for heat sink according to claim 1, characterized in that: Fixing holes (1102) are evenly formed on both sides of the long sides of the top surface of the lower die base (11), and an outer guide column (1101) is fixed next to the lower part (15) of the limit column arranged on the lower die base (11). A discharge spring (901) is fixedly installed on the lower die base (11), and the position of the discharge spring (901) matches the discharge spring hole (403).

6. The multifunctional punching machine for heat sink according to claim 1, characterized in that: The four corners of the lower template (9) are respectively provided with screw sleeve holes (903) of equal height, and the remaining hole positions match the hole positions of the upper template (8).

7. The multifunctional punching machine for heat sink according to claim 1, characterized in that: The upper clamping plate (6) is provided with a hole for placing a punch (19), the top of the punch (19) is against the upper pad (5), the punch (19) is clamped in the upper clamping plate (6) by a pressing block (20), and is fixed by a screw (21).

8. A control method for a multifunctional punching machine for a heat sink, characterized in that: Using the edge trimming machine described in any one of claims 1 to 7 above, the control method includes the following steps: Step S1, confirm the heat sink model to be processed, replace the corresponding punch and insert, and start the punching machine; Step S2, the heat sink sheet for processing enters from the material guide device, and after being corrected by the floating material dual-purpose pin, it continues to move along the material belt direction, and is stamped and formed by various shape inserts and punches on the upper and lower machines. The elastic force of the spring separates the heat sink sheet from the lower press, and is transmitted out through the material belt; Step S3, during the working process, the detection device performs real-time detection. If misalignment occurs, the punching machine is stopped immediately, and the position is corrected and then restarted to continue working.

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