Aluminum piece hot stamping die

Abstract

The utility model relates to the technical field of stamping dies, in particular to an aluminum piece hot stamping die which comprises a lower die plate, an upper die plate, a bearing stand column, a die core, a guide sleeve, a die sleeve, two oil cylinders and a plurality of breathable cloth bags. The guide sleeve is slidably sleeved outside the second limiting cantilever platform, the die sleeve is fixedly connected to the guide sleeve, the two oil cylinders are symmetrically installed on the two sides of the die sleeve and can synchronously act, the two sides of the die sleeve are fixedly connected with lifting arms fixedly connected with the telescopic ends of the two oil cylinders, a chip removal groove is formed between the second limiting cantilever platform and the die sleeve, and a plurality of chip removal holes are formed in the circumferential direction of the die sleeve. A connector is fixedly connected to the closing-up position of the cloth bag and detachably connected to the outer end of the chip removal hole so that the cloth bag can be communicated with the chip removal hole. And metal powder and fallen burrs are effectively collected and treated, so that subsequent cleaning is facilitated, the maintenance cost of the mold can be reduced, and the service life of the mold is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of stamping dies and relates to a hot stamping die for aluminum parts. Background Art

[0002] Hot stamping dies are special process equipment that processes heat-treated metal materials into parts or semi-finished products. Stamping is a pressure processing method that uses a die installed on a punch press to apply pressure to the material at room temperature to separate or plastically deform it, thereby obtaining the desired parts.

[0003] In the prior art, the friction between the blank and the mold core and the mold sleeve easily generates metal powder or burrs, which is not only inconvenient to clean, but also easily enters the gaps of mold accessories after accumulation, thereby resulting in high mold maintenance costs and reduced mold service life. Utility Model Content

[0004] The utility model aims to solve the above problems in the prior art and proposes a hot stamping die for aluminum parts.

[0005] The purpose of the utility model can be achieved through the following technical solutions: a hot stamping die for aluminum parts, comprising a lower template, an upper template and two load-bearing columns symmetrically and parallelly fixedly connected to both sides of the upper end surface of the lower template, and also comprising: a mold core, the mold core is fixedly connected to the lower template, and a first limit platform is circumferentially extended at its bottom, and a second limit platform is circumferentially extended in the middle of the mold core; a guide sleeve, the guide sleeve sliding sleeve is arranged outside the second limit platform and its lower end surface can abut against the first limit platform; a mold sleeve, the mold sleeve is fixedly connected to the guide sleeve; two oil cylinders, the two oil cylinders are symmetrically installed on both sides of the mold sleeve and can Synchronous action, lifting arms fixedly connected to the telescopic ends of the two oil cylinders are fixedly provided on both sides of the mold sleeve; a number of breathable cloth bags; wherein, when the lower end surface of the guide sleeve abuts against the first limit platform, a mold cavity for molding the required parts is formed between the inner wall of the mold sleeve and the top of the mold core, an annular chip groove connected to the mold cavity is formed between the second limit platform and the mold sleeve, a number of chip holes penetrating the interior of the mold sleeve and connected to the chip groove are circumferentially provided, the mold sleeve is provided with a number of chip holes corresponding to the chip holes one by one, a connector is fixedly provided at the closing part of the cloth bag, the connector can be detachably connected to the outer end of the chip hole to connect the cloth bag with the chip hole.

[0006] Preferably, the mold core is provided with a demolding mechanism capable of ejecting the required parts out of the mold cavity, the demolding mechanism includes an ejection push rod, a lower end cover and a piston, the mold core is provided with an ejection cavity which runs through the interior along its length direction, the lower end cover is embedded in the lower end surface of the mold core to seal the lower port of the ejection cavity, the piston is arranged in the ejection cavity, the ejection push rod is fixedly connected to the upper end of the piston and slidably penetrates into the ejection cavity, the top end of the ejection push rod is embedded in the upper end surface of the mold core, and the side surface of the first limit platform is provided with a pressure port connected to the bottom of the ejection cavity.

[0007] Preferably, an O-ring, a wear-resistant ring and a U-ring are sequentially embedded in the circumference of the piston from top to bottom, which are in sliding fit with the inner wall of the ejection cavity; a first sealing ring which is in fit with the mold core is embedded in the lower end cover; and a second sealing ring is embedded in the connection between the ejection push rod and the piston.

[0008] Preferably, the outer end of the chip removal hole faces downward and is inclined at 15°-30° relative to the horizontal direction.

[0009] Preferably, a baffle is hinged on the inner wall of the chip removal hole and the hinge point is located above the inner wall. When the baffle is not affected by external force, it naturally droops and its side is tightly attached to the inner wall of the chip removal hole to block the chip removal hole.

[0010] Preferably, the cloth bag is woven from glass fiber or carbon fiber.

[0011] Preferably, the lower end surface of the upper template is provided with a limiting groove for docking with the mold sleeve for it to be snapped into.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. A chip discharge groove is set to collect the metal powder and burrs generated by the blank. After the metal blank is heat treated, the surrounding gas heating pressure increases. During the stamping process, the volume of the mold cavity gradually decreases. After the gas is pressurized, the metal powder and burrs are sent into the bag through the chip discharge hole, making it easier to clean the metal powder and burrs, avoiding accumulation in the gaps of mold accessories, reducing the high mold maintenance cost and increasing the mold service life.

[0014] 2. This stamping die has a compact structure, simple operation and high processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall facade structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of stamping blanking.

[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the stamping blank.

[0018] Figure 4 It is a schematic diagram of the demoulding cross-section structure.

[0019] Figure 5 Figure 3 Enlarged schematic diagram of the demoulding mechanism structure at point A.

[0020] Figure 6 yes Figure 3 Schematic diagram of the enlarged cross-section structure at the chip removal hole at point B.

[0021] In the figure, 1, lower template; 2, upper template; 21, limit groove; 3, load-bearing column; 4, mold core; 41, first limit platform; 411, pressure port; 42, second limit platform; 43, mold cavity; 44, chip groove; 45, demoulding mechanism; 451, ejector push rod; 4511, second sealing ring; 452, lower end cover; 4521, first sealing ring; 453, piston; 4531, O-ring; 4532, wear-resistant ring; 4533, U-ring; 46, ejector cavity; 5, guide sleeve; 6, mold sleeve; 61, lifting arm; 62, chip hole; 621, baffle; 7, oil cylinder; 8, cloth bag; 81, connector. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0023] like Figure 1 , Figure 3 As shown, a hot stamping die for aluminum parts comprises a lower die plate 1, an upper die plate 2 and two load-bearing columns 3 symmetrically and parallelly fixedly connected to both sides of the upper end surface of the lower die plate 1. The upper die plate 2 is connected to a punch press and can be buckled on the load-bearing columns 3 and a die sleeve 6 to achieve mold closing under the action of the punch press. It also comprises: a die core 4, the die core 4 is fixedly connected to the lower die plate 1, and a first limit platform 41 is circumferentially extended at its bottom, and a second limit platform 42 is circumferentially extended at the middle of the die core 4; a guide sleeve 5, the guide sleeve 5 is slidably sleeved outside the second limit platform 42 and its lower end surface can abut against the first limit platform 41; a die sleeve 6, the die sleeve 6 is fixedly connected to the guide sleeve 5; two oil cylinders 7, the two oil cylinders 7 are symmetrically installed on both sides of the die sleeve 6 And it can move synchronously, and the two sides of the mold sleeve 6 are fixedly connected with lifting arms 61 fixedly connected to the telescopic ends of the two oil cylinders 7; a number of breathable cloth bags 8; wherein, when the lower end surface of the guide sleeve 5 abuts against the first limit platform 41, a mold cavity 43 for molding the required parts is formed between the inner wall of the mold sleeve 6 and the top of the mold core 4, and an annular chip groove 44 connected with the mold cavity 43 is formed between the second limit platform 42 and the mold sleeve 6. The mold sleeve 6 is circumferentially provided with a number of chip removal holes 62 that penetrate the interior thereof and are connected to the chip removal groove 44. The number of cloth bags 8 correspond to the chip removal holes 62 one by one, and a connecting head 81 is fixedly connected at the closing part of the cloth bag 8, and the connecting head 81 can be detachably connected to the outer end of the chip removal hole 62 to connect the cloth bag 8 with the chip removal hole 62.

[0024] In this embodiment, if Figure 2 As shown, when punching and unloading, the oil cylinders 7 on both sides of the upper end surface of the upper mold plate 2 are simultaneously actuated to lift the mold sleeve 6 through the lifting arms 61 to place the blank into the mold cavity 43.

[0025] like Figure 3As shown, when the blank is formed, the oil cylinders 7 on both sides of the upper end surface of the upper template 2 act simultaneously to lower the die sleeve 6 through the lifting arm 61. At this time, the guide sleeve 5 is moved along the second limit platform 42 until the lower end surface of the guide sleeve 5 abuts against the first limit platform 41. The second limit platform 42 limits the lower end surface of the blank, so that metal chips and fallen burrs will enter the chip groove 44. Since the metal blank is heat-treated, the heating pressure of the gas around the mold cavity 43 will increase. During the stamping process, the volume of the mold cavity 43 will gradually shrink. After the gas is gradually pressurized, the metal chips and fallen burrs will be sent to the cloth bag 8 through the chip removal hole 62 for collection, making it more convenient to clean the metal chips and fallen burrs later, avoiding accumulation in the gaps of mold accessories, reducing the high mold maintenance cost and increasing the service life of the mold.

[0026] like Figure 3 , Figure 4 , Figure 5 As shown, in this embodiment, the mold core 4 is provided with a demolding mechanism 45 capable of ejecting the required parts from the mold cavity 43, and the demolding mechanism 45 includes an ejection push rod 451, a lower end cover 452 and a piston 453. The mold core 4 is provided with an ejection cavity 46 that runs through the interior along its length direction, the lower end cover 452 is embedded in the lower end surface of the mold core 4 to seal the lower end of the ejection cavity 46, the piston 453 is arranged in the ejection cavity 46, the ejection push rod 451 is fixedly connected to the upper end of the piston 453 and slidably penetrates into the ejection cavity 46, the top end of the ejection push rod 451 is embedded in the upper end surface of the mold core 4, and the side of the first limit platform 41 is provided with a pressure port 411 connected to the bottom of the ejection cavity 46.

[0027] When demolding is required, the oil cylinders 7 on both sides of the upper end surface of the upper mold plate 2 act simultaneously to lift the mold sleeve 6 through the lifting arm 61, and the pressure port 411 is used to connect the pressurizing equipment. The pressurizing equipment pushes the piston 453 upward along the ejection cavity 46, so that the ejection push rod 451 slides along the ejection cavity 46 and finally passes through the ejection cavity 46 to eject the required parts.

[0028] Furthermore, an O-ring 4531, a wear-resistant ring 4532 and a U-ring 4533 are sequentially embedded in the circumference of the piston 453 from top to bottom, and are in sliding fit with the inner wall of the ejection cavity 46; a first sealing ring 4521 that is in fit with the mold core 4 is embedded in the lower end cover 452; and a second sealing ring 4511 is embedded in the connection between the ejection push rod 451 and the piston 453.

[0029] The O-ring 4531 and the U-ring 4533 are in close contact with the inner wall of the ejection cavity 46 to ensure air tightness. The wear-resistant ring 4532 plays a role of precise guiding support to ensure that the moving parts, the piston 453 and the ejection push rod 451, can move in concentric circles, avoid friction and wear between the piston 453 and the ejection cavity 46, and extend the service life of the piston 453 and the ejection push rod 451.

[0030] Furthermore, if Figure 6 As shown, the outer end of the chip removal hole 62 is downward and inclined at 15°-30° relative to the horizontal direction. Metal dust and burrs are dense solids, and the inclined setting of the chip removal hole 62 is more conducive to the metal dust and burrs sliding into the cloth bag 8.

[0031] The inner wall of the chip removal hole 62 is hinged with a baffle 621 and the hinge point is located above the inner wall. When the baffle 621 is not affected by external force, it naturally droops and its side is tightly attached to the inner wall of the chip removal hole 62 to block the chip removal hole 62. After the blank is formed, a closed cavity is formed between the chip removal groove 44 and the baffle 621. Due to its own weight and the friction with the wall of the chip removal hole 62, the baffle 621 can only push the baffle 621 to flip when the air pressure in the closed cavity between the chip removal groove 44 and the baffle 621 reaches sufficient pressure, which is more conducive to the discharge of metal chips and burrs from the chip removal hole 62 and can prevent metal chips from flowing back into the mold cavity 43.

[0032] The cloth bag 8 is woven from glass fiber or carbon fiber. The temperature of metal dust and burrs is relatively high. If ordinary breathable cloth bags, such as cotton cloth and non-woven cloth bags, are used, spontaneous combustion is very likely to occur. The cloth bag 8 woven from glass fiber or carbon fiber is not only resistant to high temperature and breathable, but also has a certain adsorption effect on metal dust and burrs.

[0033] The lower end surface of the upper mold plate 2 is provided with a limiting groove 21 for docking with the mold sleeve 6 for it to be snapped in. The mold sleeve 6 is snapped into the limiting groove 21 to ensure more accurate mold closing, prevent damage to the mold core 4 when bearing pressure, and improve the quality of the molded parts.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. A person skilled in the art of the present invention may make various modifications or additions to the specific embodiments described or replace them in a similar manner, but this will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A hot stamping die for aluminum parts, comprising a lower die plate (1), an upper die plate (2), and two load-bearing columns (3) symmetrically and parallelly connected to both sides of the upper end surface of the lower die plate (1), characterized in that: Also includes: A mold core (4), the mold core (4) is fixedly connected to the lower mold plate (1), a first position limiting platform (41) is circumferentially extended at the bottom, and a second position limiting platform (42) is circumferentially extended at the middle of the mold core (4); A guide sleeve (5), wherein the guide sleeve (5) is slidably sleeved outside the second position limiting platform (42) and a lower end surface thereof can abut against the first position limiting platform (41); A mold sleeve (6), wherein the mold sleeve (6) is fixedly connected to the guide sleeve (5); Two oil cylinders (7), the two oil cylinders (7) are symmetrically mounted on both sides of the die sleeve (6) and can move synchronously, and the two sides of the die sleeve (6) are fixedly connected with lifting arms (61) fixedly connected to the telescopic ends of the two oil cylinders (7); A number of breathable cloth bags (8); Among them, when the lower end surface of the guide sleeve (5) abuts against the first limiting platform (41), a mold cavity (43) for molding the required parts is formed between the inner wall of the mold sleeve (6) and the top of the mold core (4), and an annular chip removal groove (44) connected to the mold cavity (43) is formed between the second limiting platform (42) and the mold sleeve (6). The mold sleeve (6) is circumferentially provided with a plurality of chip removal holes (62) penetrating the interior thereof and connected to the chip removal groove (44). The plurality of cloth bags (8) correspond one to one with the chip removal holes (62). A connecting head (81) is fixedly connected to the closing portion of the cloth bag (8), and the connecting head (81) can be detachably connected to the outer end of the chip removal hole (62) to connect the cloth bag (8) with the chip removal hole (62).

2. The aluminum hot stamping die according to claim 1, characterized in that: The mold core (4) is provided with a demoulding mechanism (45) capable of ejecting a required part from the mold cavity (43). The demoulding mechanism (45) comprises an ejection push rod (451), a lower end cover (452) and a piston (453). The mold core (4) is provided with an ejection cavity (46) penetrating the interior thereof along its length direction. The lower end cover (452) is embedded in the lower end surface of the mold core (4) to seal the lower end of the ejection cavity (46). The piston (453) is arranged in the ejection cavity (46). The ejection push rod (451) is fixedly connected to the upper end of the piston (453) and slidably penetrates the ejection cavity (46). The top end of the ejection push rod (451) is embedded in the upper end surface of the mold core (4). A pressure port (411) communicating with the bottom of the ejection cavity (46) is provided on the side of the first limit platform (41).

3. The aluminum hot stamping die according to claim 2, characterized in that: The piston (453) is sequentially embedded with an O-shaped sealing ring (4531), a wear-resistant ring (4532) and a U-shaped sealing ring (4533) which are in sliding fit with the inner wall of the ejection chamber (46) from top to bottom. A first sealing ring (4521) which is in sliding fit with the mold core (4) is embedded on the lower end cover (452). A second sealing ring (4511) is embedded at the connection between the ejection push rod (451) and the piston (453).

4. The aluminum hot stamping die according to claim 1 or 2, characterized in that: The outer end of the chip removal hole (62) is downward and is inclined at 15°-30° relative to the horizontal direction.

5. The aluminum hot stamping die according to claim 4, characterized in that: The inner wall of the chip removal hole (62) is hinged with a baffle (621) and the hinge point is located above the inner wall. When the baffle (621) is not subjected to external force, it naturally droops and its side is tightly attached to the inner wall of the chip removal hole (62) to block the chip removal hole (62).

6. The aluminum hot stamping die according to claim 1 or 2, characterized in that: The cloth bag (8) is woven from glass fibers or carbon fibers.

7. The aluminum hot stamping die according to claim 1 or 2, characterized in that: The lower end surface of the upper mold plate (2) is provided with a limiting groove (21) for docking with the mold sleeve (6) for locking into.

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