A wrinkle-proof forming die for automotive aluminum plate products

Abstract

The present invention discloses an anti-wrinkle forming mold for automobile aluminum plate products in the technical field of automobile parts processing equipment, comprising: a workbench, a bottom wall of an upper mold is provided with a collecting and releasing groove, a pressing block is slidably installed in the inner cavity of the collecting and releasing groove, a first electric push rod for moving the pressing block up and down is installed in the inner cavity of the collecting and releasing groove, an air outlet is provided on the inner wall of the collecting and releasing groove and is located below the pressing block, a gas collecting and releasing mechanism connected with the air inlet end of the air outlet is installed above the upper mold, gas is injected into the mold through the gas collecting and releasing mechanism in the device, and the processed aluminum plate is pressed by gas pressure to press most of the aluminum plate into the cavity of the lower mold, and then the pressing block is moved downward to completely press the aluminum plate into the cavity of the lower mold, so that the probability of the aluminum plate being hindered in the process of pressing can be reduced, so as to ensure that the processed aluminum plate fully extends into the lower mold cavity, and the probability of wrinkles in the aluminum plate product is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing equipment, in particular to an anti-wrinkle forming die for automobile aluminum plate products. Background Art

[0002] Auto parts are an indispensable part of assembling cars, and aluminum sheet products are one of the auto parts.

[0003] When using a forming mold to produce aluminum plate products, the aluminum plate material is placed on top of the lower mold of the forming mold, and the upper mold of the forming mold moves downward to press the aluminum plate material, so that the aluminum plate material enters the cavity of the lower mold for forming, and the required aluminum plate product is made;

[0004] However, due to the asymmetry of the geometric surface of aluminum plate products, the flow speed of the material along the edge of the lower mold cavity is uneven during the forming of the aluminum plate (caused by the different contact pressures between the upper mold and the aluminum plate, which affects the extension of the aluminum plate into the lower mold cavity), resulting in wrinkles, corrugations and other quality defects in the workpiece after deep drawing. For this reason, we propose an anti-wrinkle forming mold for automotive aluminum plate products. Summary of the invention

[0005] The purpose of the present invention is to provide an anti-wrinkle forming mold for automotive aluminum plate products, so as to solve the problem raised in the above background technology that due to the asymmetry of the geometric surface of the aluminum plate products, the flow speed of the material at various locations along the edge of the lower mold cavity during the forming of the aluminum plate is uneven, resulting in quality defects such as wrinkles and corrugations in the workpiece after drawing.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an anti-wrinkle forming die for automotive aluminum plate products, comprising: a workbench;

[0007] A frame is installed on the top wall of the workbench, a hydraulic push rod is installed above the frame, a movable end of the hydraulic push rod extends into the inner cavity of the frame and is connected to the upper die, and a lower die is installed above the workbench and below the upper die;

[0008] The bottom wall of the upper mold is provided with a receiving and releasing groove, a pressing block is slidably installed in the inner cavity of the receiving and releasing groove, and a first electric push rod for moving the pressing block up and down is installed in the inner cavity of the receiving and releasing groove;

[0009] An air outlet below the pressing block is provided on the inner wall of the collecting and releasing groove, and a gas collecting and releasing mechanism connected with the air inlet end of the air outlet is installed above the upper mold.

[0010] Further, the pressing block includes a mounting plate mounted on the bottom movable end of the first electric push rod, a connecting block is mounted on the bottom wall of the mounting plate, an inner block is mounted on the bottom wall of the connecting block, an outer block that can move up and down is sleeved on the outer wall of the inner block, and an elastic element for limiting the movement of the outer block is mounted on the outer wall of the inner block.

[0011] Wherein, a second electric push rod is installed at the top of the inner cavity of the storage groove, and a through hole for the moving end of the second electric push rod to pass through is opened on the outer wall of the mounting plate.

[0012] Furthermore, a downwardly extending mounting groove is provided at the bottom of the cavity of the lower mold, a pressing block is slidably inserted into the inner cavity of the mounting groove, a spring member for supporting the pressing block is installed in the inner cavity of the mounting groove, and a second touch switch below the pressing block is installed in the inner cavity of the mounting groove.

[0013] Wherein, the second touch switch is electrically connected to the gas retracting and releasing mechanism and the first electric push rod respectively.

[0014] Furthermore, a U-shaped sealing block covering the outer side of the lower mold cavity is installed on the top wall of the lower mold, and a U-shaped sealing groove is opened on the bottom wall of the upper mold.

[0015] Furthermore, a sealing gasket is provided on the outer wall of the sealing block, an air storage tank is provided inside the sealing gasket, and an air pump connected to the air storage tank is installed above the workbench.

[0016] Among them, a placement groove is opened on the upper surface of the lower mold, a touch block is slidably inserted in the inner cavity of the placement groove, the top of the touch block is located on the outside of the placement groove, a spring for supporting the touch block is installed in the inner cavity of the placement groove, a third touch switch is installed in the inner cavity of the placement groove below the touch block, the third touch switch is electrically connected to the gas collection and release mechanism and the air pump, and an indicator light electrically connected to the third touch switch is installed above the workbench.

[0017] Furthermore, a mounting box is installed on the top wall of the upper mold, a first touch switch electrically connected to the gas collection and release mechanism is installed at one end of the inner cavity of the mounting box, a mounting sleeve is installed at the other end of the inner cavity of the mounting box, a moving rod is slidably inserted into the inner cavity of the mounting sleeve, a moving pressure plate for pressing the first touch switch is installed at the outer end of the moving rod, and an elastic member for limiting the movement of the moving rod is installed on the outer wall of the mounting sleeve.

[0018] A magnetic block is installed on the inner end of the moving rod, and an electromagnet electrically connected to the third touch switch is installed on the inner wall of the mounting sleeve facing the magnetic block, and the magnetic poles of the electromagnet and the magnetic block are the same.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: gas is injected into the mold through a gas collection and release mechanism in the device, and the processed aluminum plate is pressed by gas pressure, so that most of the aluminum plate is pressed into the cavity of the lower mold, and then the pressing block is moved downward to completely press the aluminum plate into the cavity of the lower mold, thereby reducing the probability of the aluminum plate's extension being hindered during the pressing process, ensuring that the processed aluminum plate fully extends into the lower mold cavity, reducing the probability of wrinkles in the aluminum plate products, and ensuring the processing quality of the aluminum plate products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the connection structure between the upper mold and the gas collection and release mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the connection structure between the installation box and the movable pressing plate of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection structure between the upper mold and the pressing block of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the pressing block of the present invention;

[0025] Figure 6 It is a schematic diagram of the lower mold structure of the present invention;

[0026] Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure in the middle.

[0027] In the figure: 1. workbench; 2. frame; 3. upper die; 31. sealing groove; 32. storage groove; 33. pressing block; 331. mounting plate; 332. inner block; 333. outer block; 34. first electric push rod; 35. second electric push rod; 4. lower die; 5. hydraulic push rod; 6. gas storage mechanism; 7. mounting box; 8. movable pressure plate; 9. first touch switch; 10. mounting sleeve; 11. movable rod; 12. elastic member; 13. air outlet; 14. air pump; 15. indicator light; 16. sealing block; 17. pressing block; 18. sealing pad; 19. touch block; 20. mounting groove. DETAILED DESCRIPTION

[0028] 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.

[0029] Embodiment 1:

[0030] See also Figure 1 , an anti-wrinkle forming mold for automobile aluminum plate products, comprising: a workbench 1, a frame 2, an upper mold 3, a lower mold 4, a hydraulic push rod 5 and a pressing block 33;

[0031] The frame 2 is mounted on the top wall of the workbench 1, and a hydraulic push rod 5 is mounted on the top wall of the frame 2. The moving end of the hydraulic push rod 5 passes through the inner cavity of the frame 2 and is connected to the upper die 3. The hydraulic push rod 5 moves the upper die 3 up and down. The lower die 4 is mounted on the top wall of the workbench 1 and is directly below the upper die 3.

[0032] See also Figure 1 , Figure 2 , Figure 4 ,and Figure 6 A receiving groove 32 is provided on the bottom wall of the upper mold 3, and a pressing block 33 is slidably installed in the inner cavity of the receiving groove 32. The pressing block 33 can move up and down. The pressing block 33 is located directly above the cavity of the lower mold 4. The pressing block 33 is a raised pressing area of ​​the upper mold 3, which matches the cavity of the lower mold 4. A first electric push rod 34 is installed on the top of the inner cavity of the receiving groove 32. The bottom moving end of the first electric push rod 34 is connected to the top wall of the pressing block 33, and the pressing block 33 is completely in the inner cavity of the receiving groove 32;

[0033] An air outlet 13 is provided on the inner wall of the collecting and releasing groove 32, and the pressing block 33 is located above the air outlet 13. A gas collecting and releasing mechanism 6 (air pump) is installed above the upper mold 3. The air pump is connected to the air outlet 13 through a conduit, and the air pump supplies air to the inside of the mold through the air outlet 13 or extracts the gas inside the mold. The gas collecting and releasing mechanism 6 is used to first inject air into the mold, and the aluminum plate is first pressed by gas, and then the pressing block 33 is used to press, so that the aluminum plate is completely pressed into the cavity. The aluminum plate is first pressed by gas to reduce the resistance to the extension of the aluminum plate.

[0034] See also Figure 5 The pressing block 33 includes a mounting plate 331, a connecting block, an inner block 332, an outer block 333 and a second electric push rod 35.

[0035] The mounting plate 331 is mounted on the bottom moving end of the first electric push rod 34, a connecting block is mounted on the bottom wall of the mounting plate 331, an inner block 332 is mounted on the bottom wall of the connecting block, an outer block 333 is sleeved on the outer wall of the inner block 332, the outer block 333 can move up and down at the outer wall of the inner block 332, an elastic element (spring) is mounted between the outer wall of the inner block 332 and the outer wall of the outer block 333, a second electric push rod 35 is mounted on the top of the inner cavity of the storage slot 32, a through hole is opened on the top outer wall of the mounting plate 331, and the through hole is located directly below the moving end of the second electric push rod 35, so that the moving end of the second electric push rod 35 It can move downward through the through hole. When the pressing block 33 moves downward to press the aluminum plate, as the pressure of the pressing block 33 in contact with the aluminum plate increases, the outer block 333 moves upward, while the inner block 332 continues to contact the aluminum plate and presses the aluminum plate to the bottom of the cavity of the lower mold 4. Then the second electric push rod 35 works to move the outer block 333 downward and press the edge area of ​​the aluminum plate into the cavity of the lower mold 4, so that the pressure of the outer block 333 on the edge of the aluminum plate is small, ensuring that the aluminum plate can extend inside the cavity of the lower mold 4, avoiding the obstruction of the extension of the aluminum plate due to high pressure, and avoiding the occurrence of wrinkles in the aluminum plate product.

[0036] See also Figure 6 A mounting groove is provided at the bottom of the cavity of the lower mold 4, and a pressing block 17 is slidably inserted into the inner cavity of the mounting groove (the pressing block 17 is a telescopic block, which is the same as the telescopic rod, including a block body and a sleeve body, and the block body is slidably inserted into the inner cavity of the sleeve body. A spring is installed between the inner cavity of the sleeve body and the block body, so that the length of the pressing block 17 can be changed), the pressing block 17 can move up and down, and the top of the pressing block 17 is located on the outer side above the mounting groove, and a spring member (spring) is installed between the bottom of the inner cavity of the mounting groove and the bottom wall of the pressing block 17. A second touch switch is installed at the bottom of the inner cavity of the mounting groove, and the second touch switch is located below the pressing block 17. The second touch switch is electrically connected to the gas retracting mechanism 6 and the first electric push rod 34 through wires;

[0037] See also Figure 4 , Figure 6 and Figure 7 A U-shaped sealing block 16 is installed on the top wall of the lower mold 4, and the cavity of the lower mold 4 is inside the sealing block 16. When the processed aluminum plate is placed on the lower mold 4, the aluminum plate is in the inner cavity of the sealing block 16. A U-shaped sealing groove 31 is opened on the bottom wall of the upper mold 3, and the sealing groove 31 is directly above the sealing block 16. A rubber sealing gasket 18 is sleeved on the outer wall of the sealing block 16, and an air storage tank is opened inside the sealing gasket 18. An air pump 14 is installed on the top wall of the workbench 1, and the air pump 14 is connected to the air storage tank through a conduit.

[0038] A placement groove 20 is provided on the top wall of the lower mold 4, and a touch block 19 is slidably inserted into the inner cavity of the placement groove 20. The touch block 19 can move up and down, and the top of the touch block 19 is located above the inner cavity of the placement groove 20. A spring is installed between the bottom of the inner cavity of the placement groove 20 and the bottom wall of the touch block 19. A third touch switch is installed at the bottom of the inner cavity of the placement groove 20. The third touch switch is located below the touch block 19. The third touch switch is electrically connected to the gas retracting mechanism 6 and the air pump 14 through a wire. An indicator light 15 (LED light) electrically connected to the third touch switch is installed above the workbench 1. The upper mold 3 moves down and fits with the lower mold 4, which will press the touch block 19 into the inner cavity of the placement groove 20, press the third touch switch, and make the gas collection and release mechanism 6 blow gas into the mold, and also make the air pump 14 blow air into the air storage tank, so that the sealing gasket 18 expands, and the sealing block 16 and the sealing groove 31 fit more closely, thereby ensuring the sealing between the upper mold 3 and the lower mold 4.

[0039] Embodiment 2:

[0040] See also Figure 2 and Figure 3 On the basis of Example 1, a mounting box 7 is installed on the top wall of the upper mold 3, a first touch switch 9 is installed on the rear side of the inner cavity of the mounting box 7, the first touch switch 9 is connected to the gas retracting mechanism 6 through a wire, a mounting sleeve 10 is installed on the front side of the inner cavity of the mounting box 7, a moving rod 11 is slidably inserted into the rear side of the inner cavity of the mounting sleeve 10, the moving rod 11 can move forward and backward, a moving pressing plate 8 is installed on the rear end of the moving rod 11, and an elastic member 12 (spring) is sleeved on the outer wall of the moving rod 11, and the two ends of the spring are respectively connected to the outer wall of the mounting sleeve 10 and the outer wall of the moving rod 11, and the moving rod 11 A magnetic block is installed at the front end, and an electromagnet is installed at the front side of the inner cavity of the mounting sleeve 10. The electromagnet is electrically connected to the third touch switch. The magnetic poles of the electromagnet and the magnetic block are the same. When the touch block 19 presses the third touch switch, the electromagnet will be energized to generate magnetic force, which repels the magnetic block, so that the moving rod 11 moves the moving pressing plate 8 backward, presses the first touch switch 9, and makes the gas collection and release mechanism 6 work, so that the gas collection and release mechanism 6 delays for a while before working, ensuring that the upper mold 3 and the lower mold 4 are completely sealed (because it takes a certain amount of time for the air pump 14 to inflate the air storage tank);

[0041] Compared with the first embodiment, components such as the installation box 7 are added, so that when the touch block 19 presses the third touch switch, the gas collection and release mechanism 6 delays for a while before working, ensuring that the upper mold 3 and the lower mold 4 are completely sealed.

[0042] Working principle: put the processed aluminum plate on the top of the lower mold 4, and make the aluminum plate in the middle of the sealing block 16, then the hydraulic push rod 5 works, and moves the upper mold 3 downward to fit with the lower mold 4, inserts the sealing block 16 into the inner cavity of the sealing groove 31, and also presses the touch block 19 completely into the inner cavity of the placement groove 20, presses the third touch switch, makes the gas collection and release mechanism 6 work, injects the gas into the inside of the mold through the outlet 13, applies pressure to the aluminum plate, squeezes the aluminum plate into the cavity of the lower mold 4, and the aluminum plate extends into the cavity to push the pressing block 17, so that the pressing block 17 presses the second touch switch, so that The gas collection and release mechanism 6 extracts the gas inside the mold and activates the first electric push rod 34 to move the pressing block 33 to the bottom of the upper mold 3 to press the aluminum plate. When the pressure between the pressing block 33 and the aluminum plate increases, the outer block 333 will move upward, while the inner block 332 will continue to contact the aluminum plate and press the aluminum plate to the bottom of the cavity of the lower mold 4. Then the second electric push rod 35 will work to push the outer block 333 downward and press the edge area of ​​the aluminum plate into the cavity of the lower mold 4, so that the aluminum plate is completely entered into the cavity. After completion, the upper mold 3 is moved up and reset to remove the finished aluminum plate product.

[0043] 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. An anti-wrinkle forming die for automotive aluminum plate products, characterized in that: include: Workbench (1); A frame (2) is installed on the top wall of the workbench (1), a hydraulic push rod (5) is installed above the frame (2), the movable end of the hydraulic push rod (5) extends into the inner cavity of the frame (2) and is connected to the upper mold (3), and a lower mold (4) located below the upper mold (3) is installed above the workbench (1); The bottom wall of the upper mold (3) is provided with a receiving and releasing groove (32), a pressing block (33) is slidably installed in the inner cavity of the receiving and releasing groove (32), and a first electric push rod (34) for moving the pressing block (33) up and down is installed in the inner cavity of the receiving and releasing groove (32); The inner wall of the collecting and releasing groove (32) is provided with a gas outlet (13) below the pressing block (33), and a gas collecting and releasing mechanism (6) connected to the gas inlet end of the gas outlet (13) is installed above the upper mold (3); The bottom of the cavity of the lower mold (4) is provided with a mounting groove extending downward, a pressing block (17) is slidably inserted into the inner cavity of the mounting groove, a spring member for supporting the pressing block (17) is installed in the inner cavity of the mounting groove, and a second touch switch is installed in the inner cavity of the mounting groove below the pressing block (17). The second touch switch is electrically connected to the gas release and retract mechanism (6) and the first electric push rod (34) respectively; when the gas applies pressure to the aluminum plate, the aluminum plate extends into the cavity and pushes the pressing block (17), so that the pressing block (17) presses the second touch switch, so that the gas release and retract mechanism (6) extracts the gas inside the mold and the first electric push rod (34) works; The top wall of the lower mold (4) is provided with a U-shaped sealing block (16) covering the outer side of the mold cavity of the lower mold (4), and the bottom wall of the upper mold (3) is provided with a U-shaped sealing groove (31); The outer wall of the sealing block (16) is provided with a sealing gasket (18), an air storage tank is provided inside the sealing gasket (18), and an air pump (14) connected to the air storage tank is installed above the workbench (1). The upper surface of the lower mold (4) is provided with a placement groove (20), a touch block (19) is slidably inserted into the inner cavity of the placement groove (20), the top of the touch block (19) is located outside the placement groove (20), a spring for supporting the touch block (19) is installed in the inner cavity of the placement groove (20), a third touch switch is installed in the inner cavity of the placement groove (20) and is located below the touch block (19), the third touch switch is electrically connected to the gas collection and release mechanism (6) and the air pump (14), and an indicator light (15) electrically connected to the third touch switch is installed above the workbench (1); The top wall of the upper mold (3) is provided with a mounting box (7), one end of the inner cavity of the mounting box (7) is provided with a first touch switch (9) electrically connected to the gas collection and release mechanism (6), the other end of the inner cavity of the mounting box (7) is provided with a mounting sleeve (10), a moving rod (11) is slidably inserted into the inner cavity of the mounting sleeve (10), a moving pressure plate (8) for pressing the first touch switch (9) is provided at the outer end of the moving rod (11), and an elastic member (12) for limiting the movement of the moving rod (11) is provided on the outer wall of the mounting sleeve (10), A magnetic block is installed at the inner end of the moving rod (11), and an electromagnet electrically connected to the third touch switch is installed on the inner wall of the mounting sleeve (10) facing the magnetic block, wherein the magnetic poles of the electromagnet and the side opposite to the magnetic block are the same.

2. The wrinkle-proof forming die for automotive aluminum plate products according to claim 1, characterized in that: The pressing block (33) comprises a mounting plate (331) mounted on the bottom movable end of the first electric push rod (34); a connecting block is mounted on the bottom wall of the mounting plate (331); an inner block (332) is mounted on the bottom wall of the connecting block; an outer block (333) movable up and down is sleeved on the outer wall of the inner block (332); an elastic element for limiting the movement of the outer block (333) is mounted on the outer wall of the inner block (332); A second electric push rod (35) is installed at the top of the inner cavity of the storage groove (32), and a through hole for the moving end of the second electric push rod (35) to pass through is opened on the outer wall of the mounting plate (331).

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