A vacuum adsorption clamping tooling for the processing of thin plate heat sinks

Abstract

The present application relates to a vacuum adsorption clamping tooling for the processing of thin plate heat sinks, belonging to the technical field of heat sink processing equipment, and includes an installation table, an adsorption table and a tooling plate. The adsorption table is arranged on the installation table, a vacuum cavity is opened in the adsorption table, a vacuum joint is arranged on the adsorption table, and the tooling plate covers the adsorption table to form a sealed space for the vacuum cavity. An adsorption hole group is opened on the tooling plate, and the adsorption hole group is used for connecting with an external air circuit to form negative pressure adsorption; a placement groove for placing the heat sink is opened on the tooling plate, and the adsorption hole group is opened at the bottom of the placement groove; a covering film is arranged on the tooling plate and within the placement groove, a locking hole is opened in the middle of the covering film, an elastic strip is arranged on the covering film through the locking hole, the elastic strip is hermetically connected with the covering film, and after the heat sink is placed within the elastic strip, the elastic strip is used for winding and tightening the side wall of the heat sink, so that a sealed connection is formed between the elastic strip and the heat sink; the application has the advantage of avoiding deformation of the heat sink during the clamping process.

Description

Technical Field

[0001] The present application relates to the technical field of heat sink processing equipment, and in particular to a vacuum adsorption clamping tooling for processing thin - plate heat sinks. Background Technique

[0002] Heat sinks are mainly used to dissipate heat from heat - generating electronic components. The materials are mostly aluminum alloy, brass or bronze, etc., and the shapes are mostly plate - shaped, sheet - shaped, and multi - sheet structures. As Figure 1 shown, in the processing of ordinary heat sinks, they usually go through turning, grinding and fluting in sequence and finally take shape. During the fluting process, some thin - plate heat sinks are prone to deformation due to mechanical clamping. Summary of the Invention

[0003] To avoid deformation of the heat sink during clamping, the present application provides a vacuum adsorption clamping tooling for processing thin - plate heat sinks.

[0004] The vacuum adsorption clamping tooling for processing thin - plate heat sinks provided by the present application adopts the following technical solutions:

[0005] A vacuum adsorption clamping tooling for processing thin - plate heat sinks includes an installation table, an adsorption table and a tooling plate. The adsorption table is arranged on the installation table. A vacuum cavity is opened in the adsorption table. A vacuum joint for connecting the vacuum cavity to an external air path is arranged on the adsorption table. The tooling plate covers the adsorption table to form a sealed space for the vacuum cavity. An adsorption hole group is opened on the tooling plate, and the adsorption hole group is used to connect with an external air path to form negative - pressure adsorption;

[0006] A placement groove for placing the heat sink is opened on the tooling plate, and the adsorption hole group is opened at the bottom of the placement groove;

[0007] A covering film is arranged in the placement groove on the tooling plate. The covering film is hermetically arranged on the side wall of the placement groove. A locking hole is opened in the middle of the covering film. An elastic strip is arranged on the covering film through the locking hole. The initial length of the elastic strip is less than the perimeter of the heat sink. The elastic strip and the covering film are hermetically connected. After the heat sink is placed inside the elastic strip, the elastic strip is used to wind and tighten the side wall of the heat sink, so that a sealed connection is formed between the elastic strip and the heat sink.

[0008] Optionally, a tightening member is sleeved outside the elastic strip. A deformation airbag is arranged between the tightening member and the elastic strip. An air core is arranged on the deformation airbag. The tightening member is used to limit the deformation direction of the deformation airbag so that the deformation airbag deforms towards the elastic strip direction. When the deformation airbag is inflated and expanded, it is used to push the elastic strip towards the edge of the heat sink to deform and closely fit the side wall of the heat sink.

[0009] Optionally, the tightening member includes a tightening strip and a tightening block. The tightening block is fixedly arranged at one end of the tightening strip. An installation hole is formed in the tightening block. The axial direction of the installation hole is parallel to the length direction of the tightening strip. The tightening strip is used to be inserted into the installation hole, and the tightening strip slidably penetrates through the installation hole. The tightening strip and the tightening block are combined into a tightening loop. The tightening strip slides in the tightening block to adjust the perimeter of the tightening loop. The tightening member further includes an adjusting member, which is used to drive the tightening strip to slide in the tightening block and fix the tightening strip.

[0010] Optionally, the adjusting member includes a tightening wheel rotatably arranged in the tightening block. There are two tightening wheels and they are located in the installation hole. The tightening strip is clamped between the two tightening wheels. The rotation axis of the tightening wheel is parallel to the width direction of the tightening strip. The adjusting member further includes a toothed groove formed on the tightening strip and one of the tightening wheels. The toothed groove on the tightening strip faces away from the deformation airbag. The toothed grooves on the tightening strip and the tightening wheel are meshed with each other. The adjusting member further includes an arc-shaped rack slidably arranged in the tightening block. The arc-shaped rack is located in the installation hole and faces the toothed groove. The arc-shaped rack is clamped into the toothed groove to fix the tightening wheel.

[0011] Optionally, an expanding member is arranged on the tooling plate. The expanding member includes a winding shaft, a winding rope and a hook. The winding shaft is rotatably arranged on the tooling plate. The winding rope is wound on the winding shaft. The hook is fixedly arranged on the winding rope. The hook is used to hang the elastic strip and expand the elastic strip as the winding shaft rotates, so that the heat sink passes through the elastic strip and is placed in the placement groove.

[0012] Optionally, a winding wheel is slidably arranged on the winding shaft. The winding wheel slides along the length direction of the winding shaft. The winding rope is wound on the winding wheel. A limiting strip is convexly formed on the winding shaft. A limiting groove that is clamped with the limiting strip is concavely formed on the inner side of the winding wheel.

[0013] Optionally, the expanding member is arranged on both sides of the placement groove to drive the elastic strip to expand towards both sides. An intermediate rod is rotatably arranged on the tooling plate. The intermediate rod is located between the two expanding members. Bevel gears that are meshed with each other are arranged on both the intermediate rod and the winding shaft. One end of any one of the winding shafts extends out of the tooling plate.

[0014] Optionally, an installation frame is arranged on the tooling plate and located in the placement groove. The outer ring of the installation frame abuts against the inner wall of the placement groove. The covering film is fixedly and hermetically arranged on the inner wall of the installation frame. A negative pressure channel is formed on the tooling plate. One end of the negative pressure channel is located at the bottom of the tooling plate, and the other end is located on the side wall of the placement groove. The installation frame closes the negative pressure channel to fix the installation frame.

[0015] Optionally, a fixing groove is formed by concave molding on the outer wall of the mounting frame, and a fixing airbag is arranged in the fixing groove. The fixing airbag is in an inflated state and fills the fixing groove. When the heat sink is fixed by negative pressure, the fixing airbag seals the negative pressure channel and fixes the mounting frame in the placement groove.

[0016] Optionally, the end of the hook is in a pointed shape.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] Cover the tooling plate on the adsorption table, then place the heat sink to be processed on the tooling plate, so that the heat sink covers the adsorption hole groups on the tooling plate. Then, form a negative pressure in the vacuum chamber through an external air circuit, thereby fixing the tooling plate on the adsorption table by negative pressure adsorption. At the same time, the heat sink is adsorbed and fixed through negative pressure adsorption; when the processing is completed and the heat sink needs to be removed, unlock the negative pressure in the vacuum chamber through the external air circuit, so that the fixing of the heat sink and the tooling plate can be released, which helps to make the disassembly and assembly of the heat sink convenient and fast;

[0019] Place the heat sink in the placement groove, perform a flaring operation on the elastic strip, so that the heat sink is located inside the elastic strip, and then release the flaring of the elastic strip. The elastic strip restores its deformation and winds around the heat sink, and closely adheres to the outer wall of the heat sink. Subsequently, the adsorption hole groups adsorb and fix the heat sink, and the operation is simple and convenient; under the action of the covering film, the adsorption hole groups that do not participate in the adsorption and fixation are covered, ensuring the adsorption and fixation of the heat sink;

[0020] When adsorbing and fixing heat sinks with different shapes and irregular heat sinks, the same tooling plate is used for adsorption and fixation, so that there is no need to replace the tooling plate, reducing the input quantity of the tooling plate, and thus reducing the input cost of the tooling plate. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the heat sink;

[0022] Figure 2 is a schematic overall structural diagram of a vacuum adsorption clamping tooling for thin plate type heat sink processing according to an embodiment of the present application;

[0023] Figure 3 is an exploded schematic diagram of the tooling plate and the mounting frame in a vacuum adsorption clamping tooling for thin plate type heat sink processing according to an embodiment of the present application;

[0024] Figure 4 is a schematic structural diagram of a tightening member in a vacuum adsorption clamping tooling for thin plate type heat sink processing according to an embodiment of the present application;

[0025] Figure 5 is Figure 4Enlarged schematic view of part A;

[0026] Figure 6 It is a cross-sectional view of the tightening block in a vacuum adsorption clamping tooling for thin plate heat sink processing in an embodiment of the present application;

[0027] Figure 7 Is Figure 6 Enlarged schematic view of part B;

[0028] Figure 8 Is Figure 7 Enlarged schematic view of part C;

[0029] Figure 9 Is Figure 3 Enlarged schematic view of part D;

[0030] Figure 10 It is a cross-sectional view of the tooling plate in a vacuum adsorption clamping tooling for thin plate heat sink processing in an embodiment of the present application, aiming to show the structural schematic diagram of the negative pressure channel.

[0031] Explanation of reference numerals: 1, mounting table; 2, adsorption table; 3, tooling plate; 4, vacuum chamber; 5, vacuum joint; 6, heat sink; 7, placement groove; 8, through hole; 9, covering film; 10, locking hole; 11, elastic strip;

[0032] 12, tightening member; 121, tightening strip; 122, tightening block; 123, tightening wheel;

[0033] 13, deformation airbag; 14, mounting hole; 15, toothed groove; 16, arc rack; 17, sliding rod;

[0034] 18, hole expanding member; 181, winding shaft; 182, winding rope; 183, hook; 184, winding wheel; 185, intermediate rod; 186, bevel gear;

[0035] 19, mounting frame; 20, negative pressure channel; 21, fixing groove; !22, fixing airbag. Detailed implementation manners

[0036] The following further elaborates on the present application in conjunction with the attached Figure 2 - attached Figure 10 to further explain the present application in detail.

[0037] An embodiment of the present application discloses a vacuum adsorption clamping tooling for thin plate heat sink processing. Refer to Figure 2, The vacuum adsorption clamping tooling for processing thin plate radiators includes a mounting table 1, an adsorption table 2, and a tooling plate 3. The adsorption table 2 is arranged on the mounting table 1. A vacuum chamber 4 is opened inside the adsorption table 2. A vacuum joint 5 for connecting the vacuum chamber 4 to an external air circuit is arranged on the adsorption table 2. The tooling plate 3 covers the adsorption table 2 to form a sealed space for the vacuum chamber 4. An adsorption hole group is opened on the tooling plate 3, and the adsorption hole group is used to connect to an external air circuit to form negative pressure adsorption.

[0038] Cover the tooling plate 3 on the adsorption table 2. Then place the radiator 6 to be processed on the tooling plate 3, so that the radiator 6 covers the adsorption hole group on the tooling plate 3. Then, through the external air circuit, make the vacuum chamber 4 form negative pressure, so as to fix the tooling plate 3 on the adsorption table 2 by negative pressure adsorption, and at the same time realize the adsorption and fixation of the radiator 6 through negative pressure adsorption; when the processing is completed and the radiator 6 needs to be removed, unlock the negative pressure in the vacuum chamber 4 through the external air circuit, so as to release the fixation of the radiator 6 and the tooling plate 3, which helps to make the disassembly and assembly of the radiator 6 convenient and fast.

[0039] Refer to Figure 1 and Figure 3 , because the radiator 6 has many specifications and shapes, such as rectangular and oval. When it is necessary to adsorb and fix such a radiator 6, it is necessary to replace the tooling plate 3 to adapt to the radiator 6, and it is necessary to cover the remaining holes of the adsorption hole group, resulting in a low utilization rate of the tooling plate 3, and thus a large input cost of the tooling plate 3. Therefore, in order to improve the utilization rate of the tooling plate 3, as well as the use range of the tooling plate

[0040] Refer to Figure 3 , Figure 4 and Figure 5 , further, a covering film 9 is arranged on the tooling plate 3 and inside the placement groove 7. The covering film 9 is hermetically arranged on the side wall of the placement groove 7. A locking hole 10 is opened in the middle of the covering film 9. An elastic strip 11 is arranged on the covering film 9 through the locking hole 10. A seal is arranged between the elastic strip 11 and the inner wall of the locking hole 10. The initial length of the elastic strip 11 is less than the perimeter of the radiator 6. The elastic strip 11 is hermetically connected to the covering film 9. After the radiator 6 is placed inside the elastic strip 11, the elastic strip 11 is used to wind and tighten the side wall of the radiator 6, so as to make a sealed connection between the elastic strip 11 and the radiator 6.

[0041] When processing heat sinks 6 with different specifications and shapes, first, the elastic strip 11 is flared. Then, the heat sink 6 is placed in the placement groove 7, and the heat sink 6 covers part of the through hole 8. Subsequently, the flaring of the elastic strip 11 is released, and the elastic strip 11 resumes its deformation and tightly adheres to the peripheral wall of the heat sink 6, thereby realizing the sealing between the covering film 9 and the heat sink 6, and avoiding air from entering the vacuum chamber 4 through the gap between the elastic strip 11 and the heat sink 6 during vacuum adsorption, thus ensuring the vacuum adsorption and fixing effect of the heat sink 6. Under the action of the elastic strip 11, when the elastic strip 11 resumes its deformation, the elastic strip 11 adapts to the shape of the heat sink 6, thus realizing heat sinks 6 with different specifications and shapes. And under the action of the covering film 9, the remaining through holes 8 are covered, thereby adsorbing and fixing the heat sink 6. At the same time, under the action of the covering film 9, the debris generated during the processing of the heat sink 6 falls onto the covering film 9, avoiding the debris from entering the placement groove 7, thus preventing the blockage of the through hole 8 and facilitating the centralized treatment of the debris.

[0042] Referring to Figure 6 , Figure 7 and Figure 8 , when there is a positioning notch on the outer side wall of the heat sink 6, it is difficult for the elastic strip 11 to enter the positioning notch, resulting in ineffective sealing between the covering film 9 and the heat sink 6. Therefore, in the embodiment of the present application, a tightening member 12 is sleeved outside the elastic strip 11, and a deformation airbag 13 is arranged between the tightening member 12 and the elastic strip 11. The deformation airbag 13 is in a long strip shape. Further, an air core is arranged on the deformation airbag 13. The tightening member 12 is used to limit the deformation direction of the deformation airbag 13 to make the deformation airbag 13 deform towards the elastic strip 11. When the deformation airbag 13 is inflated and expanded, it pushes the elastic strip 11 to deform towards the edge of the heat sink 6 and tightly adhere to the side wall of the heat sink 6. After the heat sink 6 is sleeved in the elastic strip 11, the air core is connected to the inflation device, and the deformation airbag 13 is inflated and expanded. At this time, under the action of the tightening member 12, the deformation direction of the deformation airbag 13 is limited, making the deformation airbag 13 deform towards the outer wall of the heat sink 6, and pushing the elastic strip 11 to deform towards the outer wall of the heat sink 6, so that the elastic strip 11 enters the positioning notch, and an effective seal is formed between the covering film 9 and the heat sink 6.

[0043] Referring to Figure 6 , Figure 7 and Figure 8, in the embodiment of the present application, the tightening member 12 includes a tightening strip 121 and a tightening block 122. The tightening block 122 is fixedly arranged at one end of the tightening strip 121. An installation hole 14 is formed in the tightening block 122. The axial direction of the installation hole 14 is parallel to the length direction of the tightening strip 121. The tightening strip 121 is used for being inserted into the installation hole 14, and the tightening strip 121 slidably penetrates through the installation hole 14. The tightening strip 121 and the tightening block 122 are combined into a tightening loop. The tightening strip 121 slides in the tightening block 122 to adjust the circumference of the tightening loop. Further, the deformation airbag 13 is arranged inside the tightening strip 121 and its length direction is parallel to the length direction of the tightening strip 121;

[0044] Referring to Figure 6 , Figure 7 and Figure 8 , the tightening member 12 further includes an adjusting member for driving the tightening strip 121 to slide in the tightening block 122 and fixing the tightening strip 121;

[0045] Referring to Figure 6 , Figure 7 and Figure 8 , the adjusting member includes a tightening wheel 123 rotatably arranged in the tightening block 122. There are two tightening wheels 123 and they are located in the installation hole 14. The tightening strip 121 is clamped between the two tightening wheels 123. The rotation axis of the tightening wheel 123 is parallel to the width direction of the tightening strip 121. The adjusting member further includes a toothed groove 15 formed on the tightening strip 121 and one of the tightening wheels 123. The toothed groove 15 on the tightening strip 121 faces away from the deformation airbag 13. The toothed grooves 15 on the tightening strip 121 and the tightening wheel 123 are engaged with each other.

[0046] Referring to Figure 6 , Figure 7 and Figure 8 , after the heat sink 6 is sleeved in the elastic strip 11, the tightening strip 121 is sleeved outside the elastic strip 11. Then, the deformation airbag 13 is initially inflated and expanded. Then, the tightening wheel 123 is rotated. The rotation of the tightening wheel 123 drives the tightening strip 121 to move in the installation hole 14. The tightening belt moves to reduce the diameter of the tightening circle. As the diameter of the tightening circle decreases, the deformation airbag 13 gradually moves towards the elastic strip 11 and presses against the elastic strip 11. Then, the deformation airbag 13 is inflated again and the diameter of the tightening circle is reduced, so that the deformation airbag 13 enters the positioning notch, and drives the elastic strip 11 to enter the positioning notch. The operation is simple and convenient. The deformation airbag 13 is located on the surface of the tightening strip 121 facing away from the toothed groove 15, reducing the possibility of damage to the deformation airbag 13 caused by the engagement of the toothed groove 15.

[0047] Referring to Figure 6 , Figure 7 and Figure 8, the adjusting member further includes an arc-shaped rack 16 slidably disposed on the tightening block 122. The arc-shaped rack 16 is located in the mounting hole 14 and faces the tooth-shaped groove 15. The arc-shaped rack 16 slides towards the tooth-shaped groove 15. Further, a sliding rod 17 is provided on the back surface of the arc-shaped rack 16. The sliding rod 17 slidably penetrates through the tightening block 122. The arc-shaped rack 16 is clamped into the tooth-shaped groove 15 to fix the tightening wheel 123. When the tightening strip 121 acts on the deformation airbag 13 to make the elastic strip 11 enter the positioning notch, the arc-shaped rack 16 slides and is clamped into the tooth-shaped groove 15 to fix the tightening wheel 123, so that the elastic strip 11 maintains the above state until the processing of the heat sink 6 is completed. Further, a spring is sleeved on the sliding rod 17, and the spring urges the arc-shaped rack 16 to have a tendency to slide towards the tooth-shaped groove 15.

[0048] Referring to Figure 3 and Figure 9 , to facilitate the flaring operation of the elastic strip 11 and facilitate placing the heat sink 6 in the placement groove 7, an expanding member 18 is provided on the tooling plate 3. The expanding member 18 includes a winding shaft 181, a winding rope 182 and a hook 183. The winding shaft 181 is rotatably disposed on the tooling plate 3. The winding shaft 181 is located on the short side of the tooling plate 3 and is parallel to the short side of the tooling table. The rotation axis of the winding shaft 181 is parallel to the short side of the tooling plate 3. The winding rope 182 is wound on the winding shaft 181. The hook 183 is fixedly disposed on the winding rope 182. The hook 183 is used to hang the elastic strip 11 and expand the elastic strip 11 as it rotates with the winding shaft 181, so that the heat sink 6 passes through the elastic strip 11 and is placed in the placement groove 7. Before the heat sink 6 is placed on the tooling plate 3, first rotate the winding shaft 181. The winding shaft 181 rotates to wind the winding rope 182. The winding rope 182 drives the hook 183 to move and pull the elastic strip 11 for the flaring operation. Then place the heat sink 6 in the placement groove 7. Subsequently, remove the hook 183 from the elastic strip 11 to complete the sleeving of the elastic strip 11 on the heat sink 6.

[0049] Referring to Figure 3 and Figure 9 , to facilitate adjusting the flaring size, in the embodiment of the present application, a winding wheel 184 is slidably disposed on the winding shaft 181. The winding wheel 184 slides along the length direction of the winding shaft 181. The winding rope 182 is wound on the winding wheel 184. A limiting strip is integrally formed and protruded on the winding shaft 181. A limiting groove for clamping with the limiting strip is formed by concave inward on the inner side of the winding wheel 184. When it is necessary to increase the flaring area, move the winding wheel 184 on the winding shaft 181 to adjust the distance between the two winding wheels 184 on the winding shaft 181, thereby adjusting the flaring area.

[0050] Referring to Figure 3 and Figure 9In order to facilitate the rotation of the reeling shaft 181 to expand the elastic strip 11, in the embodiment of the present application, the expanding members 18 are arranged on both sides of the placement groove 7, and drive the elastic strip 11 to expand toward both sides. An intermediate rod 185 is rotatably provided on the tooling plate 3, and the intermediate rod 185 is located between the two expanding members 18. The intermediate rod 185 and the reeling shaft 181 are both provided with mutually meshing bevel gears 186, and one end of any reeling shaft 181 extends from the tooling plate 3; when the elastic strip 11 is expanded, the reeling shaft 181 is rotated, and the rotation of the reeling shaft 181 drives the intermediate rod 185 and the other reeling shaft 181 to rotate, thereby expanding the elastic strip 11, and the operation is simple and convenient.

[0051] Reference Figure 3 and Figure 9 In the embodiment of the present application, the end of the hook 183 is pointed to facilitate the hook 183 to hook the elastic strip 11.

[0052] In the embodiment of the present application, an installation frame 19 is provided on the tooling plate 3 and located in the placement groove 7. The outer ring of the installation frame 19 abuts the inner wall of the placement groove 7. The covering film 9 is fixed and sealed on the inner wall of the installation frame 19. A negative pressure channel 20 is opened on the tooling plate 3. One end of the negative pressure channel 20 is located at the bottom of the tooling plate 3, and the other end is located at the side wall of the placement groove 7. The installation frame 19 closes the negative pressure channel 20 and fixes the installation frame 19; when the heat sink 6 is fixed with negative pressure, the negative pressure acts on the installation frame 19 through the negative pressure channel 20, and fixes the installation frame 19 in the placement groove 7; when the covering film 9 needs to be replaced, the installation frame 19 is taken out of the placement groove 7 for replacement, and the operation is simple and convenient.

[0053] Reference Figure 3 and Figure 10 In order to improve the sealing effect between the mounting frame 19 and the placement groove 7, a fixing groove 21 is concavely formed on the outer wall of the mounting frame 19, and a fixing airbag 22 is provided in the fixing groove 21. The fixing airbag 22 is inflated and fills the fixing groove 21. When the heat sink 6 is fixed under negative pressure, the fixing airbag 22 closes the negative pressure channel 20 and fixes the mounting frame 19 in the placement groove 7; after the negative pressure environment is formed, the contact surface between the fixing airbag 22 and the negative pressure channel 20 enters the negative pressure channel 20 and blocks the negative pressure channel 20, thereby fixing the fixing airbag 22 and the mounting frame 19 in the placement groove 7, thereby improving the sealing effect between the mounting frame 19 and the placement groove 7.

[0054] The implementation principle of a vacuum adsorption clamping tool for processing thin plate heat sinks in the embodiment of the present application is as follows:

[0055] When processing the heat sink 6, first rotate the two limit plates to expand the notch, then clamp the elastic strip 11 with the limit plates, then rotate the two limit plates to clamp the elastic strip 11 inside, and then insert the limit rod into the limit hole to fix the two limit plates, thereby fixing the elastic strip 11 in the hook 183;

[0056] Subsequently, rotate the winding shaft 181. The rotation of the winding shaft 181 drives the middle rod 185 and the other winding shaft 181 to rotate, thereby flaring the elastic strip 11;

[0057] Subsequently, place the heat sink 6 in the placement groove 7, remove the limit rod from the limit hole, and the elastic strip 11 sleeved on the heat sink 6; after the heat sink 6 is sleeved in the elastic strip 11, sleeve the tightening strip 121 on the outside of the elastic strip 11, then initially inflate and expand the deformation airbag 13, and then rotate the tightening wheel 123. The rotation of the tightening wheel 123 drives the tightening strip 121 to move in the mounting hole 14. As the tightening strip moves, the diameter of the tightening circle decreases. As the diameter of the tightening circle decreases, the deformation airbag 13 gradually moves towards the elastic strip 11 and presses against the elastic strip 11. Subsequently, inflate the deformation airbag 13 again and reduce the diameter of the tightening circle, so that the deformation airbag 13 enters the positioning notch, driving the elastic strip 11 to enter the positioning notch; at the same time, under the action of the deformation airbag 13, the sealing effect between the elastic strip 11 and the heat sink 6 is improved.

[0058] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A vacuum adsorption clamping tooling for the processing of thin sheet heat sinks, characterized in that: It includes an installation table (1), a suction table (2) and a tooling plate (3). The suction table (2) is arranged on the installation table (1). A vacuum chamber (4) is opened in the suction table (2). A vacuum connector (5) for connecting the vacuum chamber (4) to an external air circuit is arranged on the suction table (2). The tooling plate (3) covers the suction table (2) to make the vacuum chamber (4) form a sealed space. An adsorption hole group is opened on the tooling plate (3), and the adsorption hole group is used to connect with an external air circuit to form negative pressure adsorption. A placement groove (7) for placing a heat sink (6) is opened on the tooling plate (3), and the adsorption hole group is opened at the bottom of the placement groove (7). A covering film (9) is arranged on the tooling plate (3) and within the placement groove (7). The covering film (9) is hermetically arranged on the side wall of the placement groove (7). A locking hole (10) is opened in the middle of the covering film (9). An elastic strip (11) is arranged on the covering film (9) through the locking hole (10). The initial length of the elastic strip (11) is less than the perimeter of the heat sink (6). The elastic strip (11) is hermetically connected to the covering film (9). After the heat sink (6) is placed within the elastic strip (11), the elastic strip (11) is used to wind and tighten the side wall of the heat sink (6) so as to make a hermetic connection between the elastic strip (11) and the heat sink (6).

2. The vacuum adsorption clamping tooling for the processing of thin plate heat sinks according to claim 1, wherein: A tightening member (12) is sleeved outside the elastic strip (11). A deformation airbag (13) is arranged between the tightening member (12) and the elastic strip (11). An air core is arranged on the deformation airbag (13). The tightening member (12) is used to limit the deformation direction of the deformation airbag (13) to make the deformation airbag (13) deform towards the elastic strip (11). When the deformation airbag (13) is inflated and expanded, it is used to push the elastic strip (11) to deform towards the edge of the heat sink (6) and closely fit the side wall of the heat sink (6).

3. The vacuum adsorption clamping tooling for processing thin plate heat sinks according to claim 2, wherein: The tightening member (12) includes a tightening strip (121) and a tightening block (122). The tightening block (122) is fixedly arranged at one end of the tightening strip (121). An installation hole (14) is opened in the tightening block (122). The axial direction of the installation hole (14) is parallel to the length direction of the tightening strip (121). The tightening strip (121) is used to be inserted into the installation hole (14), and the tightening strip (121) slidably penetrates through the installation hole (14). The tightening strip (121) and the tightening block (122) are combined into a tightening ring, and the tightening strip (121) slides within the tightening block (122) to adjust the perimeter of the tightening ring. The tightening member (12) further includes an adjusting member, and the adjusting member is used to drive the tightening strip (121) to slide within the tightening block (122) and fix the tightening strip (121).

4. A vacuum adsorption clamping tooling for the processing of thin plate heat sinks according to claim 3, characterized in that: The adjusting member includes a tightening wheel (123) rotatably arranged in the tightening block (122). There are two tightening wheels (123) arranged in the mounting hole (14). The tightening strip (121) is clamped in the two tightening wheels (123). The rotation axis of the tightening wheel (123) is parallel to the width direction of the tightening strip (121). The adjusting member further includes a toothed groove (15) formed on the tightening strip (121) and one of the tightening wheels (123). The toothed groove (15) on the tightening strip (121) faces away from the deformation airbag (13). The toothed grooves (15) on the tightening strip (121) and the tightening wheel (123) are meshed with each other. The adjusting member further includes an arc-shaped rack (16) slidably arranged in the tightening block (122). The arc-shaped rack (16) is located in the mounting hole (14) and faces the toothed groove (15). The arc-shaped rack (16) is clamped into the toothed groove (15) to fix the tightening wheel (123).

5. The vacuum adsorption clamping tooling for thin plate heat sink processing according to claim 1, wherein: An expanding hole member (18) is arranged on the tooling plate (3). The expanding hole member (18) includes a winding shaft (181), a winding rope (182) and a hook (183). The winding shaft (181) is rotatably arranged on the tooling plate (3). The winding rope (182) is wound on the winding shaft (181). The hook (183) is fixedly arranged on the winding rope (182). The hook (183) is used for hanging the elastic strip (11) and expanding the mouth of the elastic strip (11) as the winding shaft (181) rotates, so that the heat sink (6) passes through the elastic strip (11) and is placed in the placing groove (7).

6. The vacuum adsorption clamping tooling for thin plate heat sink processing according to claim 5, wherein: A winding wheel (184) is slidably arranged on the winding shaft (181). The winding wheel (184) slides along the length direction of the winding shaft (181). The winding rope (182) is wound on the winding wheel (184). A limiting strip is convexly formed on the winding shaft (181). A limiting groove for clamping with the limiting strip is concavely formed on the inner side of the winding wheel (184).

7. A vacuum adsorption clamping tooling for the processing of thin sheet heat sinks according to claim 5, characterized in that: The expanding hole members (18) are arranged on both sides of the placing groove (7) to drive the elastic strip (11) to expand towards both sides. An intermediate rod (185) is rotatably arranged on the tooling plate (3). The intermediate rod (185) is located between the two expanding hole members (18). Bevel gears (186) that are meshed with each other are arranged on both the intermediate rod (185) and the winding shaft (181). One end of any one of the winding shafts (181) extends out of the tooling plate (3).

8. A vacuum adsorption clamping tooling for processing thin plate heat sinks according to claim 1, characterized in that: An installation frame (19) is arranged on the tooling plate (3) and within the placing groove (7). The outer circle of the installation frame (19) abuts against the inner wall of the placing groove (7). The covering film (9) is fixedly and sealingly arranged on the inner wall of the installation frame (19). A negative pressure channel (20) is formed on the tooling plate (3). One end of the negative pressure channel (20) is located at the bottom of the tooling plate (3), and the other end is located on the side wall of the placing groove (7). The installation frame (19) closes the negative pressure channel (20) to fix the installation frame (19).

9. A vacuum adsorption clamping tooling for the processing of thin plate heat sinks according to claim 8, characterized in that: The outer wall of the installation frame (19) is recessed to form a fixing groove (21), a fixing airbag (22) is arranged in the fixing groove (21), the fixing airbag (22) is in an inflated state and fills the fixing groove (21), when the heat sink (6) is fixed by negative pressure, the fixing airbag (22) closes the negative pressure channel (20) and fixes the installation frame (19) in the placement groove (7).

10. A vacuum adsorption clamping tooling for the processing of thin plate heat sinks according to claim 5, characterized in that: The end of the hook (183) is in a pointed shape.

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