Aluminum profile vacuum adsorption tooling

Abstract

The present application relates to a kind of aluminium profile vacuum suction tooling, including left and right two side openings shell, two groups of transmission suction units are fixed in shell cavity, processing unit is provided on the upper end surface of shell, support unit is provided on the lower end surface of shell cavity, transmission suction unit includes left and right two rotating shafts, one belt pulley is fixed on the front and back sides of each rotating shaft respectively, belt is provided between two belt pulleys of the same side, multiple through holes are evenly provided on the length direction of belt, and each through hole is fixed with suction block, first blind hole is provided on the upper end surface of suction block, one vertical pipe is coaxially arranged in first blind hole, sliding block is coaxially arranged in the inner side of vertical pipe, and sliding block is connected with the bottom of first blind hole by compression spring;The present application is pressed to the vertical shaft by the gravity of aluminium profile itself to the sliding block, so that second horizontal hole is communicated with first horizontal hole and suction hole, greatly improve the negative pressure suction efficiency and the stability of suction fixation of vacuum pump.

Description

Technical Field

[0001] This invention relates to the field of aluminum profile processing, specifically to a vacuum adsorption fixture for aluminum profiles. Background Technology

[0002] Because aluminum profiles have low hardness, conventional tooling fixtures can easily damage the material surface during processing. Therefore, vacuum adsorption fixtures are mostly used to fix aluminum profiles. Existing vacuum adsorption devices include vacuum adsorption conveyor belts and vacuum adsorption platforms. Vacuum adsorption conveyor belts have good conveying effect but poor adsorption force, making them difficult to apply to aluminum profile processing fixtures. Vacuum adsorption platforms have strong adsorption force, but the adsorption is unstable and difficult to convey and position. For example, the negative pressure adsorption fixture for thin-walled aluminum plate processing disclosed in the prior art with publication number CN214559271U connects a vacuum generator to a grid-type negative pressure adsorption groove set on the adsorption worktable, so that the grid continuously generates negative pressure to adsorb the aluminum plate on the worktable, achieving stable clamping while greatly reducing the damage of tooling fixtures to the filter plate. However, because the grid-type negative pressure adsorption groove in this solution is always connected to the outside, when adsorbing aluminum plates with an adsorption area smaller than the worktable, the grid that is not in contact with the aluminum plate will cause negative pressure leakage, resulting in insufficient vacuum and affecting the overall adsorption effect.

[0003] The vacuum adsorption aluminum profile cutting machine for doors and windows disclosed in announcement number CN108655793A uses a floating switch inside the through hole to connect only the air duct where the plunger is pressed down by the aluminum profile to the main air duct, thus preventing pressure leakage in the air duct that is not in contact with the aluminum profile. However, this solution still has the following defects: 1. It has high requirements for the placement of the aluminum profile, which must completely cover the through hole. If the aluminum profile fails to completely cover the through hole, the plunger, affected by the weight of the aluminum profile, moves downward and connects the air duct to the main air duct. However, the upper end of the air duct is not completely blocked by the aluminum profile, which will still cause negative pressure leakage and affect the adsorption effect; 2. The direction of plunger movement is parallel to the direction of the negative pressure force on the plunger. When the negative pressure is large, the plunger that is not in contact with the aluminum profile will also be affected by the negative pressure and move downward; 3. Dust generated during the aluminum profile processing is easy to settle and cover the through hole, requiring timely manual cleaning. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention adopts an aluminum profile vacuum adsorption fixture, which solves the problem that the vacuum adsorption device is difficult to guarantee due to pressure leakage caused by the adsorption hole not being completely covered by the adsorption component.

[0005] The technical solution is a vacuum adsorption fixture for aluminum profiles, including a shell with openings on the left and right sides, two sets of front and rear conveying adsorption units fixed inside the shell cavity, a processing unit provided on the upper end face of the shell, and a support unit provided on the lower end face of the shell cavity.

[0006] The described conveying and adsorption unit includes two horizontally positioned rotating shafts, one on the left and one on the right, rotatably connected to the front and rear end faces of the housing at their respective ends. A pulley is fixed to each side of the front and rear of each shaft, and a belt is positioned between the two pulleys on the same side. Multiple through holes are evenly distributed along the length of the belt, penetrating the upper and lower end faces. An adsorption block is fixed within each through hole. A first blind hole is formed on the upper end face of the adsorption block, and a vertical tube is coaxially arranged within the first blind hole. The outer edge of the vertical tube is in contact with the inner edge of the first blind hole and can move up and down. A cylindrical slider is coaxially arranged inside the vertical tube. The upper and lower ends of the slider extend out of the upper and lower end faces of the vertical tube, respectively. The outer edge of the slider is in contact with the inner edge of the vertical tube and can move up and down. The slider is connected to the bottom of the first blind hole by a compression spring. A second blind hole is opened on the upper end face of the slider. A first horizontal hole is opened in the middle of the slider, penetrating the left and right end faces and the second blind hole. Air extraction holes are opened at the left and right ends of the first blind hole, respectively, which are connected to the lower end face of the adsorption block. Under the condition of no external force, the vertical tube always blocks the inner end of the air extraction hole and the position is fixed. When the aluminum profile is placed and completely covers the upper end face of the adsorption block, the vertical tube can move downward so that the inner end of the air extraction hole is connected to the first horizontal hole.

[0007] Each belt has a support plate on its inner side. The upper surface of the support plate is in contact with the lower surface of the upper half of the belt. The upper surface of the support plate has a groove in the left and right direction. A pipe is provided in the middle of the support plate, which runs through the groove and is connected to the vacuum pump.

[0008] The lower end face of the vertical tube is connected to the lower end of the slider by a tension spring. The tension spring can drive the vertical tube to move up and down with the slider. A second horizontal hole is opened in the middle of the vertical tube, penetrating the four end faces (front, back, left, and right). When the tension spring is in the relaxed state, the second horizontal holes on the left and right sides are coaxial with the first horizontal hole. The inner edge of the first blind hole is located above the air extraction hole, and four third blind holes are opened in the front, back, left, and right sides respectively. Each third blind hole is equipped with a pin that can move along the axis of the third blind hole. The end face of the pin near the inner side is inclined. When the vertical tube moves upward and contacts the inclined inner end of the pin, it can push the pin outward by the inclined surface, causing the pin to move outward and make room. The pin and the bottom of the third blind hole are connected by a pressure... The spring connection allows the pin end to be placed in the second horizontal hole on the corresponding side under the action of the compression spring when the vertical tube is at the top. This restricts the vertical tube from moving downwards. Each third blind hole has a vertical hole that extends to the top of the adsorption block. Each vertical hole contains a vertical shaft that can move up and down. The lower end of each vertical shaft is a sloping surface that is higher on the outside and lower on the inside, and the upper end of the vertical shaft extends out of the vertical hole. Each pin has a countersunk hole on its upper end. The lower end of the vertical shaft is placed in the countersunk hole. When the vertical shaft moves downwards, it can press the outer end of the countersunk hole outwards through the sloping surface at the lower end, causing the pin to move outwards. When the vertical shaft moves downwards until the upper end is flush with the vertical hole, the inner end of the pin disengages from the second horizontal hole.

[0009] The connection between the inner end of the air extraction hole and the first blind hole is located between the second horizontal hole and the lower end face of the vertical tube. When the slider and the vertical tube move downward to the lowest point, the air extraction hole can connect with the first horizontal hole and the second horizontal hole.

[0010] The processing unit includes a pressure block that penetrates the upper end face of the housing. The pressure block is a cylindrical housing with an opening at the lower end face. The pressure block can move up and down along the upper end face of the housing. The pressure block cavity is equipped with a drill bit that can move up and down. The drill bit can move downward through the opening at the lower end of the pressure block.

[0011] The support unit includes a support tube that penetrates the lower end face of the housing. The support tube is located between the front and rear sets of belts and can move up and down along the lower end face of the housing.

[0012] The width of the sink trough is smaller than the width of the belt, and the belt can completely cover the sink trough when it passes through it. The lower opening of the air extraction hole located on the upper side of the support plate is placed inside the sink trough.

[0013] The same belt is provided with two rows of through holes and adsorption blocks. Each adsorption block has a ventilation hole that extends through to the first blind hole at one end near the side of the belt. The ventilation hole extends through the side of the belt, so that the cavity of the first blind hole located below the slider is connected to the outside.

[0014] The inner edge of the belt is evenly distributed with grooves, and the outer edge of the pulley is a toothed surface. The pulley and the belt form a synchronous belt through the cooperation of the toothed surface and the grooves.

[0015] A set of conveyor belts is provided at the openings on the left and right sides of the housing. The conveyor belts are flush with the belt and rotate synchronously. Both conveyor belts extend out of the openings on the left and right sides of the housing.

[0016] This invention has the following advantages over the prior art:

[0017] 1. This invention utilizes the weight of the aluminum profile itself to press down on the slider and vertical shaft, thereby autonomously determining the shape of the aluminum profile and controlling the connection between the first horizontal hole, the second horizontal hole, and the air extraction hole. This ensures that the aluminum profile can only move the vertical tube downwards when all the horizontal shafts on the same adsorption block are pressed down, thus connecting the second horizontal hole with the first horizontal hole and the air extraction hole. This avoids pressure leakage caused by the aluminum profile edge pressing down on the slider without completely covering the second blind hole, greatly improving the negative pressure adsorption efficiency and adsorption stability of the vacuum pump. Furthermore, it is unaffected by the shape of the aluminum profile and is suitable for fixing aluminum profiles of different specifications, making it more practical. Simultaneously, it prevents dust from entering the vacuum pump through the second blind hole.

[0018] 2. This invention, by setting multiple sets of adsorption blocks on the belt, allows the adsorption blocks carrying the aluminum profile to fix the aluminum profile by providing negative pressure to the settling tank when the adsorption blocks move to the settling tank position. This not only fixes the aluminum profile at any position on the belt, but also allows the aluminum profile to be transported by the movement of the belt, eliminating the need for manual intervention in the movement and fixing of the aluminum profile, thus greatly improving the processing efficiency of aluminum profiles. At the same time, the movement of the belt can cause all the adsorption blocks to flip over. When the adsorption blocks move to the position under the belt, the dust accumulated in the second blind hole can be poured out, which can effectively prevent the dust from being sucked into the subsequent pipeline and vacuum pump when the second blind hole is re-pressurized, reducing the cleaning difficulty.

[0019] 3. Since the first and second horizontal holes are opened horizontally, and the slider can only move up and down, when the sink generates negative pressure, the adsorption force generated by the negative pressure is perpendicular to the direction of movement of the slider. No matter how large the negative pressure is, it cannot drive the slider to move, thus realizing the self-locking function of the second blind hole. This can prevent the loss of negative pressure and prevent the dust generated during the aluminum profile processing from being drawn away by the vacuum pump, reducing the impact of dust on the vacuum pump and negative pressure pipeline.

[0020] 4. Before processing, the pressure plate moves downward with the vertical tube to provide pre-tension for the aluminum profile and belt, ensuring the fit between the belt and the lower end of the adsorption block and the support plate before the vacuum pump starts, achieving rapid adsorption and fixation, and avoiding the loss of negative pressure. Then, the upward movement of the support tube provides secondary support for the middle of the aluminum profile, greatly improving the safety during drilling and avoiding deformation of the aluminum profile that could cause processing errors. Attached Figure Description

[0021] Figure 1 This is the front view of the present invention.

[0022] Figure 2 This is a front sectional view of the present invention.

[0023] Figure 3 This is a partial front view of the adsorption unit of the present invention during operation.

[0024] Figure 4 This is a partial front sectional view of the adsorption unit of the present invention during operation.

[0025] Figure 5 for Figure 4 A magnified view of A in the middle.

[0026] Figure 6 for Figure 4 A magnified view of B in the middle.

[0027] Figure 7 for Figure 4 A magnified view of C.

[0028] Figure 8This is a left sectional view of the upper half of the belt of the present invention.

[0029] Figure 9 This is a three-dimensional view of the adsorption block of the present invention.

[0030] Figure 10 This is a perspective view of the vertical tube of the present invention. Detailed Implementation

[0031] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Depend on Figures 1 to 10 The present invention includes a shell 1 with openings on the left and right sides, two sets of front and rear conveying and adsorption units 2 fixed inside the cavity of the shell 1, a processing unit 3 provided on the upper end face of the shell 1, and a support unit 4 provided on the lower end face of the cavity of the shell 1.

[0033] The conveying and adsorption unit 2 includes two horizontally positioned rotating shafts 5, one on the left and one on the right, and one on the right and one on the left. The front and rear ends of the rotating shafts 5 are rotatably connected to the front and rear end faces of the housing 1, respectively. Each rotating shaft 5 has a pulley 6 fixed on its front and rear sides, and a belt 7 is provided between the two pulleys 6 on the same side. The two pulleys 6 rotate synchronously through the belt 7. Multiple through holes 8 are evenly opened along the length direction of the belt 7, penetrating the upper and lower end faces. An adsorption block 9 is fixed in each through hole 8. A first blind hole 10 is opened on the upper end face of the adsorption block 9. A vertical tube 11 is coaxially arranged in the first blind hole 10. The outer edge of the vertical tube 11 is in contact with the inner edge of the first blind hole 10 and can move up and down. A cylindrical slider 12 is coaxially arranged inside the vertical tube 11. The upper and lower ends of the slider 12 extend out of the vertical tube 11, respectively. The upper and lower end faces of the slider 12 are in contact with the inner edge of the vertical tube 11 and can move up and down. The slider 12 is connected to the bottom of the first blind hole 10 by a compression spring. The compression spring makes the upper end of the slider 12 always extend out of the first blind hole 10 and the upper end of the vertical tube 11 does not extend out of the first blind hole 10. The upper end face of the slider 12 is provided with a second blind hole 13. The middle part of the slider 12 is provided with a first horizontal hole 14 that penetrates the left and right end faces and the second blind hole 13. The left and right ends of the first blind hole 10 are respectively provided with air extraction holes 15 that communicate with the lower end face of the adsorption block 9. Under the condition of no external force, the vertical tube 11 always blocks the inner end of the air extraction hole 15 and the position is fixed. When the aluminum profile is placed and completely covers the upper end face of the adsorption block 9, the vertical tube 11 can move downward so that the inner end of the air extraction hole 15 communicates with the first horizontal hole 14.

[0034] Each belt 7 has a support plate 16 on its inner side. The upper end face of the support plate 16 is in contact with the lower end face of the upper half of the belt 7. The upper end face of the support plate 16 has a groove 17 in the left and right direction. The middle of the support plate 16 has a pipe 18 that passes through the groove 17 and is connected to the vacuum pump.

[0035] The lower end face of the vertical tube 11 is connected to the lower end of the slider 12 by a tension spring. The tension spring can drive the vertical tube 11 to move up and down with the slider 12. A second horizontal hole 19 is opened in the middle of the vertical tube 11, passing through the four end faces of the front, back, left and right sides. When the tension spring is in the relaxed state, the second horizontal holes 19 on the left and right sides are coaxial with the first horizontal hole 14. The inner edge of the first blind hole 10 is located above the air extraction hole 15 and has four third blind holes 20 respectively. Each third blind hole 20 is provided with a pin 21 that can move along the axis of the third blind hole 20. The end face of the pin 21 near the inner side is inclined. When the vertical tube 11 moves upward and contacts the inclined inner end of the pin 21, the pin 21 can be pushed outward by the inclined surface to make the pin 21 move outward to make room. The pin 21 is connected to the bottom of the third blind hole 20 by a compression spring. Next, when the vertical tube 11 is at the top, the end of the pin 21 can be placed in the second horizontal hole 19 on the corresponding side under the action of the compression spring, and the vertical tube 11 is restricted from moving downward. Each third blind hole 20 has a vertical hole 22 that extends through to the upper end of the adsorption block 9. Each vertical hole 22 has a vertical shaft 23 that can move up and down. The lower end of each vertical shaft 23 is a slope with the outside higher than the inside, and the upper end of the vertical shaft 23 extends out of the vertical hole 22. Each pin 21 has a countersunk hole 24 on its upper end. The lower end of the vertical shaft 23 is placed in the countersunk hole 24. When the vertical shaft 23 moves downward, it can squeeze the outer end of the countersunk hole 24 outward through the lower slope, so that the pin 21 moves outward. When the vertical shaft 23 moves downward to the point where the upper end is flush with the vertical hole 22, the inner end of the pin 21 disengages from the second horizontal hole 19.

[0036] The inner end of the air extraction hole 15 is connected to the first blind hole 10 between the second horizontal hole 19 and the lower end face of the vertical tube 11. When the slider 12 and the vertical tube 11 move downward to the lowest end, the air extraction hole 15 can communicate with the first horizontal hole 14 and the second horizontal hole 19.

[0037] The processing unit 3 includes a pressure block 25 that penetrates the upper end face of the housing 1. The pressure block 25 is a cylindrical housing with an opening at the lower end face. The pressure block 25 can move up and down along the upper end face of the housing 1. The cavity of the pressure block 25 is provided with a drill bit 26 that can move up and down. The drill bit 26 can move downward through the lower end opening of the pressure block 25.

[0038] The support unit 4 includes a support tube 27 that penetrates the lower end face of the housing 1. The support tube 27 is located between the front and rear sets of belts 7 and can move up and down along the lower end face of the housing 1.

[0039] The front and rear width of the sink 17 is smaller than the width of the belt 7. When the belt 7 passes through the sink 16, it can completely cover the sink 16. The lower opening of the air extraction hole 15 located on the upper side of the support plate 16 is placed inside the sink 17.

[0040] The same belt 7 is provided with two rows of through holes 8 and adsorption blocks 9. Each adsorption block 9 has a ventilation hole 28 that extends through to the first blind hole 10 at one end near the side of the belt 7. The ventilation hole 28 extends through the side of the belt, so that the cavity of the first blind hole 10 located below the slider 12 is connected to the outside.

[0041] The inner edge of the belt 7 is evenly distributed with grooves, and the outer edge of the pulley 6 is a toothed surface. The pulley 6 and the belt 7 form a synchronous belt through the cooperation of the toothed surface and the grooves.

[0042] A set of conveyor belts 29 are respectively provided at the opening positions on the left and right sides of the housing 1. The conveyor belts 29 are flush with the belt 7 and rotate synchronously. Both conveyor belts 29 extend out of the openings on the left and right sides of the housing 1.

[0043] It is worth mentioning that the rotation of the rotating shaft 5 and the conveyor belt 29 are both driven by a motor, which is fixed on the housing 1; the up and down movement of the pressure plate 25, the support tube 27 and the drill bit 26 are all driven by an electric cylinder.

[0044] The distance between the two sets of pulleys 6 on each shaft 5 and the two support plates 15 is adjustable, making it suitable for aluminum profiles of different widths.

[0045] To ensure that the aluminum profile completely covers the second blind hole 13 when all the vertical shafts 23 on the same adsorption block 9 are pressed down, the diameter of the second blind hole 13 is smaller than the diameter of the inscribed circle of the rectangle formed by the four vertical shafts 23 around it.

[0046] In use, the aluminum profile to be drilled is first placed on the conveyor belt 29 at the inlet end of the housing 1. Then, the conveyor belt 29 is started to move the aluminum profile onto the belt 7. When the aluminum profile contacts the belt 7, it can exert a downward pressure on the slider 12 and vertical shaft 23 below it by its own weight, causing the slider 12 to overcome the spring force and move into the first blind hole 10. At this time, if the four vertical shafts 23 around the slider 12 that are pressed into the first blind hole 10 are also pressed into the vertical hole 22 by the aluminum profile, as shown in the attached figure. Figure 6 As shown, under the pressure of the inclined surface of the lower end of the vertical shaft 23 against the countersunk hole 24, the pin 21 moves outward until it disengages from the second horizontal hole 19. Because the slider 12 applies a downward pulling force to the vertical tube 11 via a tension spring when it moves downward, the vertical tube 11 can move downward quickly when the pin 21 disengages from the second horizontal hole 19, allowing the second horizontal hole 19 to connect with the first horizontal hole 14 and the suction pipe 15 respectively. If the four vertical shafts 23 around the slider 12, which is pressed down to the inside of the first blind hole 10, are not completely pressed down by the aluminum profile, the attached... Figure 7As shown, as long as any one or more pins 21 are placed in the second horizontal hole 19, the vertical tube 11 cannot move downwards. Even if the slider 12 is pressed down into the first blind hole 10 by the aluminum profile, making the first horizontal hole 14 coaxial with the air extraction hole 15, the air extraction tube 15 is always blocked by the lower end of the vertical tube 11 and cannot connect with the first horizontal hole 14; the slider 12, which is not in contact with the aluminum profile, is always at the uppermost position under the action of the compression spring, and neither the first horizontal hole 14 nor the second horizontal hole 19 connects with the air extraction hole 15, as shown in the attached diagram. Figure 5 As shown;

[0047] The rotation of the shaft 5 stops when the aluminum profile moves with the belt 7 below the drill bit 26. Then, the pressure block 25 is moved downwards to fit against the upper surface of the aluminum profile, and a pre-tightening force is applied to the belts 7 at both ends of the front and rear ends through the aluminum profile to fit against the support plate 15. Then, the vacuum pump is started, and the vacuum pump evacuates the sink 17 through the pipe 18. The vacuum pump can apply negative pressure to the lower surface of the aluminum profile through the first horizontal hole 14 and the second blind hole 13 connected to the evacuation hole 15. The aluminum profile is also located inside the sink 16 but is not affected by the pressure. Since the first horizontal hole 14 and the air extraction hole 15 are not connected, the negative pressure cannot be dissipated through the second blind hole 13, which ensures the stability of the negative pressure in the second blind hole 13 on the lower side of the aluminum profile and realizes the fixation of the aluminum profile by the conveying adsorption unit 2. Then, the lower electric cylinder is activated to move the support tube 27 upward until the upper end face of the support tube 27 is in contact with the lower end face of the aluminum profile, providing secondary support for the lower end face of the aluminum profile. Finally, the drill bit 26 is activated and driven by the electric cylinder to move the drill bit 26 downward to drill holes in the surface of the aluminum profile.

[0048] After completing the drilling, the drill bit 26, pressure block 25 and support tube 27 are reset in sequence. Then the vacuum pump is stopped to restore the pressure in the settling tank 17. The motor is started to make the belt 7 continue to rotate and move the aluminum profile to the conveyor belt 29 at the outlet end, thus completing the drilling operation on the aluminum profile.

[0049] This invention utilizes the weight of the aluminum profile itself to press down on the slider 12 and the vertical shaft 23, thereby autonomously determining the shape of the aluminum profile and controlling the connectivity of the first horizontal hole 14, the second horizontal hole 19, and the air extraction hole 15. This ensures that the aluminum profile can only move the vertical tube 11 downwards when all the horizontal shafts 23 on the same adsorption block 9 are pressed down, thus connecting the second horizontal hole 19 with the first horizontal hole 14 and the air extraction hole 15. This prevents pressure leakage that could occur if the edge of the aluminum profile does not completely cover the second blind hole 13 when pressing down on the slider 12, ensuring the aluminum profile is fixed at any position on the belt 7. Simultaneously, the movement of belt 7 can drive all adsorption blocks 9 to flip. When the adsorption block 9 moves to the position under belt 7, the dust accumulated in the second blind hole 13 can be poured out, which can effectively prevent the dust from being sucked into the subsequent pipeline and vacuum pump when the second blind hole 13 is under negative pressure again. Since the first horizontal hole 14 and the second horizontal hole 19 are horizontally opened, and the slider 12 can only move up and down, when the settling tank 17 generates negative pressure, the adsorption force generated by the negative pressure is perpendicular to the direction of movement of the slider 12. No matter how large the negative pressure is, it cannot drive the slider 12 to move, thus realizing the self-locking function of the second blind hole 12.

Claims

1. A vacuum adsorption fixture for aluminum profiles, characterized in that, The shell (1) includes openings on the left and right sides. Two sets of front and rear conveying and adsorption units (2) are fixed inside the cavity of the shell (1). A processing unit (3) is provided on the upper end face of the shell (1). A support unit (4) is provided on the lower end face of the cavity of the shell (1). The aforementioned conveying and adsorption unit (2) includes two horizontally placed rotating shafts (5) on the left and right sides, respectively. The front and rear ends of the rotating shafts (5) are rotatably connected to the front and rear end faces of the housing (1). Each rotating shaft (5) has a pulley (6) fixed on its front and rear sides respectively. A belt (7) is provided between the two pulleys (6) on the same side, and the two pulleys (6) rotate synchronously through the belt (7). Multiple through holes (8) are evenly opened along the length direction of the belt (7) and penetrate the upper and lower end faces. An adsorption block (9) is fixed in each through hole (8). A first blind hole (10) is opened on the upper end face of the adsorption block (9). A vertical tube (11) is coaxially arranged in the first blind hole (10). The outer edge of the vertical tube (11) is in contact with the inner edge of the first blind hole (10) and can move up and down. A cylindrical slider is coaxially arranged inside the vertical tube (11). (12) The upper and lower ends of the slider (12) extend out of the upper and lower ends of the vertical tube (11), respectively. The outer edge of the slider (12) is in contact with the inner edge of the vertical tube (11) and can move up and down. The slider (12) is connected to the bottom of the first blind hole (10) by a compression spring. The upper end of the slider (12) is provided with a second blind hole (13). The middle part of the slider (12) is provided with a first horizontal hole (14) that passes through the left and right ends and the second blind hole (13). The left and right ends of the first blind hole (10) are respectively provided with air extraction holes (15) that communicate with the lower end of the adsorption block (9). When there is no external force, the vertical tube (11) always blocks the inner end of the air extraction hole (15) and the position is fixed. When the aluminum profile is placed and completely covers the upper end of the adsorption block (9), the vertical tube (11) can move down to make the inner end of the air extraction hole (15) communicate with the first horizontal hole (14). The lower end face of the vertical tube (11) is connected to the lower end of the slider (12) by a tension spring. The tension spring can drive the vertical tube (11) to move up and down with the slider (12). A second horizontal hole (19) is opened in the middle of the vertical tube (11) through the four end faces of the front, back, left and right. When the tension spring is in the relaxed state, the second horizontal holes (19) on the left and right sides are coaxial with the first horizontal hole (14). The inner edge of the first blind hole (10) is located above the air extraction hole (15) and four third blind holes (20) are opened in the front, back, left and right. Each third blind hole (20) is provided with a pin (21) that can move along the axis of the third blind hole (20). The end face of the pin (21) near the inner side is inclined. When the vertical tube (11) moves upward and contacts the inclined inner end of the pin (21), the pin (21) can be pushed outward by the inclined surface to make the pin (21) move outward to make room. The bottom of the pin (21) and the third blind hole (20) are connected by a compression spring. When the vertical tube (11) is at the top, the end of the pin (21) can be placed in the second horizontal hole (19) on the corresponding side under the action of the compression spring and restrict the vertical tube (11) from moving downward. Each third blind hole (20) has a vertical hole (22) that extends through to the upper end of the adsorption block (9). Each vertical hole (22) has a vertical shaft (23) that can move up and down. The lower end of each vertical shaft (23) is an inclined surface that is higher on the outside and lower on the inside. 3) The upper end extends out of the vertical hole (22). Each pin (21) has a countersunk hole (24) on its upper end face. The lower end of the vertical shaft (23) is placed in the countersunk hole (24). When the vertical shaft (23) moves downward, it can press the outer end face of the countersunk hole (24) outward through the lower end inclined surface, so that the pin (21) moves outward. When the vertical shaft (23) moves downward until the upper end is flush with the vertical hole (22), the inner end of the pin (21) disengages from the second horizontal hole (19).

2. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, Each of the belts (7) has a support plate (16) on its inner side. The upper end face of the support plate (16) is in contact with the lower end face of the upper half of the belt (7). The upper end face of the support plate (16) has a groove (17) in the left and right direction. The middle part of the support plate (16) has a pipe (18) that passes through the groove (17) and is connected to the vacuum pump.

3. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, The connection between the inner end of the air extraction hole (15) and the first blind hole (10) is located between the second horizontal hole (19) and the lower end face of the vertical tube (11). When the slider (12) and the vertical tube (11) move downward to the lowest end, the air extraction hole (15) can connect with the first horizontal hole (14) and the second horizontal hole (19).

4. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, The processing unit (3) includes a pressure block (25) that penetrates the upper end face of the housing (1). The pressure block (25) is a cylindrical housing with an opening at the lower end face. The pressure block (25) can move up and down along the upper end face of the housing (1). The cavity of the pressure block (25) is provided with a drill bit (26) that can move up and down. The drill bit (26) can move down through the lower end opening of the pressure block (25).

5. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, The support unit (4) includes a support tube (27) that penetrates the lower end face of the housing (1). The support tube (27) is located between the front and rear sets of belts (7) and can move up and down along the lower end face of the housing (1).

6. The vacuum adsorption fixture for aluminum profiles according to claim 2, characterized in that, The front and rear width of the sink trough (17) is smaller than the width of the belt (7). When the belt (7) passes through the sink trough (17), it can completely cover the sink trough (17). The lower opening of the air extraction hole (15) located on the upper side of the support plate (16) is placed inside the sink trough (17).

7. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, The same belt (7) is provided with two rows of through holes (8) and adsorption blocks (9). Each adsorption block (9) has an air vent (28) that extends through to the first blind hole (10) at one end near the side of the belt (7). The air vent (28) extends through the side of the belt, so that the cavity of the first blind hole (10) located below the slider (12) is connected to the outside.

8. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, The inner edge of the belt (7) is evenly distributed with grooves, and the outer edge of the pulley (6) is a toothed surface. The pulley (6) and the belt (7) form a synchronous belt through the cooperation of the toothed surface and the grooves.

9. The vacuum adsorption fixture for aluminum profiles according to claim 1, characterized in that, A set of conveyor belts (29) are respectively provided at the opening positions on the left and right sides of the housing (1). The conveyor belts (29) are flush with the belt (7) and rotate synchronously. Both conveyor belts (29) extend out of the openings on the left and right sides of the housing (1).

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