An extrusion die and aluminum alloy forming method based on locking installation structure

Abstract

The present invention relates to the field of mold locking technology, and discloses an extrusion mold and aluminum alloy forming method based on a locking installation structure, including a male mold and a female mold, wherein the male mold is provided with a diversion hole, the female mold is provided with a welding chamber, and the male mold is provided with a movable core head, a protective sleeve sleeved on the outside of the movable core head, and a main drive assembly. The present invention can protect the movable core head by driving the movable core head to retract into the driving cavity by the main drive assembly, so that the residual aluminum of the mold will not be damaged by contact with the movable core head during the demolding operation, which is safer, and through the cooperation of the auxiliary drive assembly and the main drive assembly, the protective sleeve can first move along the movable core head to completely wrap the movable core head, which is conducive to first squeezing the residual aluminum around the movable core head to separate from the movable core head, thereby avoiding the movable core head from contacting the residual aluminum during the storage process, and further reducing the probability of the movable core head being worn.

Description

Technical Field

[0001] The invention relates to the technical field of mold locking, and in particular to an extrusion mold and an aluminum alloy forming method based on a locking installation structure. Background Art

[0002] The diverter-type combined mold used for aluminum alloy forming includes a male mold and a female mold, and is connected by bolts. After the mold is unloaded, the mold needs to be boiled to clean the residual aluminum in the mold, and the mold is demolded in advance before unloading, mainly by withdrawing the extrusion rod and the extrusion barrel to pull out the residual aluminum in the mold, which can reduce the workload of mold boiling and reduce the time spent on mold boiling, thereby shortening the mold reuse cycle. However, the core head of some molds is thinner and smaller. When demolding, the residual aluminum is easily pushed and scratched by the core head, which in turn damages the core head and causes the mold to be scrapped. Therefore, this type of mold cannot be demolded and still requires more time for mold boiling. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an extrusion die and aluminum alloy forming method based on a locking mounting structure, which has the advantages of convenient demolding and not easy to be damaged. It solves the problem that some molds cannot be demolded during demolding, resulting in a large amount of residual aluminum, requiring a lot of time to boil the mold, and extending the service life of the mold.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an extrusion die based on a locking installation structure, comprising a male die and a female die, the male die is provided with a diverter hole, the female die is provided with a welding chamber, the male die is provided with a movable core head, a protective sleeve sleeved on the outer side of the movable core head and a main drive assembly, the welding chamber is provided with a movable seat and a secondary drive assembly, the center of the movable seat is provided with a discharge hole, and the discharge hole corresponds to the position of the movable core head;

[0005] A driving cavity is arranged inside the male mold, the movable core head is installed in the driving cavity and one end of the movable core head extends outside the driving cavity, and the protective sleeve is installed in the driving cavity and sleeved on the outer side of the movable core head;

[0006] The main driving assembly is installed in the driving cavity and is in driving connection with the movable core head and the protective sleeve, and the main driving assembly is used to drive the protective sleeve and the movable core head to move in the driving cavity;

[0007] The auxiliary driving assembly is installed between the movable seat and the inner wall of the welding chamber and is in transmission connection with the movable seat, and the auxiliary driving assembly is used to drive the movable seat to move;

[0008] Before the demolding operation, the auxiliary driving assembly operates to force the movable seat to move, thereby causing the movable core head to detach from the discharge hole. At the same time, the main driving assembly operates to first drive the protective sleeve to slide along the movable core head until it completely wraps the movable core head, thereby cleaning the residual aluminum on the outside of the movable core head, and then driving the movable core head and the protective sleeve to move into the driving cavity at the same time, forcing the movable core head to be pre-stored in the driving cavity before demolding.

[0009] Preferably, the male mold includes a main mold, and the drive cavity is arranged on the main mold. The drive cavity includes a transverse through cavity, a vertical through cavity and a triangular cavity that are interconnected. The transverse through cavity extends to the top surface of the main mold, and the vertical through cavity extends to the bottom surface of the main mold. A cover plate is fixed to the top of the main mold by bolts.

[0010] Preferably, the protective sleeve is slidably inserted in the vertical through cavity, a connecting slope is provided at the bottom end of the protective sleeve, the movable core head is slidably inserted in the protective sleeve, and a screw hole is provided at the top end of the movable core head.

[0011] Preferably, the main driving assembly includes a driving rod and a vertical screw, the driving rod includes a driving rod located inside the transverse through-cavity, the driving rod includes two groups of reciprocating screws and a transverse screw connected end to end, an upper bolt head is provided at the end of the driving rod, the driving rod is installed in the transverse through-cavity through a first bearing seat, nut pairs are installed on the two groups of reciprocating screws, the two nut pairs are slidingly connected to the inner wall of the transverse through-cavity, the bottoms of the two nut pairs are hinged with push rods, the bottom ends of the two push rods are hinged to the top of the protective sleeve, a nut sleeve is threadedly connected to the transverse screw, the nut sleeve is slidingly connected to the inner wall of the transverse through-cavity, a transverse rack is fixed on the nut sleeve, the vertical screw is installed in the vertical through-cavity through a second bearing seat, the bottom end of the vertical screw is inserted into the movable core head and is threadedly connected to the movable core head, the top of the vertical screw is fixedly connected with a driving gear, and the driving gear corresponds to the position of the transverse rack.

[0012] Preferably, the movable seat includes a top plate and a column arranged at the bottom center of the top plate, an externally threaded tube is rotatably connected to the outside of the column, the externally threaded tube is movably plugged into the bottom wall of the welding chamber, an internally threaded ring is threadedly connected to the outer side of the externally threaded tube, the internally threaded ring is rotatably connected to the bottom wall of the welding chamber, and a composite gear is arranged on the outer edge of the internally threaded ring.

[0013] Preferably, the auxiliary drive assembly includes a vertical shaft, which passes through the bottom wall of the welding chamber and is rotatably connected to the bottom wall of the welding chamber. A lower bolt head is fixed to one end of the vertical shaft located outside the welding chamber, and a transmission gear is fixed to one end of the vertical shaft located inside the welding chamber, and the transmission gear is meshed with the compound gear.

[0014] Preferably, a mounting hole is provided on the female mold, a socket connected to the interior of the welding chamber is opened on the side wall of the mounting hole, a fastening bolt is provided in the mounting hole, the female mold is connected to the male mold through the fastening bolt, and a plurality of limiting tooth blocks distributed in a circular array are provided on the side wall of the fastening bolt.

[0015] Preferably, a half-thread screw is provided in the welding chamber, and the half-thread screw is connected to the bottom wall of the welding chamber through a third bearing seat, one end of the half-thread screw is fixedly connected to a driven bevel gear, and the driven bevel gear is meshed with the composite gear, and the other end of the half-thread screw is threadedly connected to an inner nut column, one end of the inner nut column is movably plugged into the socket, and the end of the inner nut column is provided with a locking tooth block.

[0016] Preferably, a guide column is provided at the bottom of the male mold, and a guide hole matching the guide column is provided at the top of the female mold.

[0017] The invention also discloses an aluminum alloy forming method, which uses the above-mentioned extrusion die based on the locking installation structure.

[0018] Compared with the prior art, the present invention provides an extrusion die and aluminum alloy forming method based on a locking installation structure, which has the following beneficial effects:

[0019] 1. The extrusion die and aluminum alloy forming method based on the locking installation structure can protect the movable core head by driving the movable core head to retract into the driving cavity through the main driving component, so that the residual aluminum of the mold will not be damaged by contacting the movable core head during the demolding operation, which is safer. In addition, through the cooperation of the auxiliary driving component and the main driving component, the protective sleeve can be moved along the movable core head to completely wrap the movable core head, which is conducive to first squeezing the residual aluminum around the movable core head to separate from the movable core head, thereby avoiding the movable core head from contacting the residual aluminum during the storage process, and further reducing the probability of the movable core head being worn.

[0020] 2. This extrusion die and aluminum alloy forming method based on the locking installation structure, by setting a connecting slope at the end of the protective sleeve, can better extrude the residual aluminum on the surface of the movable core head by using the slope, so as to completely clean the residual aluminum, which is more efficient. When the movable seat is driven to move by the auxiliary driving component, not only can the movable core head be separated from the feeding hole, but also the space on the top of the movable seat can be increased, which further facilitates the work of cleaning the residual aluminum with the protective sleeve.

[0021] 3. This extrusion die and aluminum alloy forming method based on the locking installation structure improves the fastening bolts, and arranges a half-thread screw and an inner nut column matching the fastening bolts in the welding chamber. When the composite gear rotates, the inner nut column is also driven to move. The fastening bolts are limited by the engaging tooth blocks on the inner nut column, which can prevent the fastening bolts from rotating and loosening, thereby making the male mold and the female mold tightly connected when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional extrusion die based on a locking installation structure of the present invention Figure 1 ;

[0023] Figure 2 A three-dimensional extrusion die based on a locking installation structure of the present invention Figure 2 ;

[0024] Figure 3 It is a structural exploded diagram of the male mold of the present invention;

[0025] Figure 4 A cross-sectional view of an extrusion die based on a locking installation structure of the present invention;

[0026] Figure 5 It is a working schematic diagram of an extrusion die based on a locking installation structure of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a half-thread screw of the present invention;

[0028] Figure 7 For the present invention Figure 6 A magnified view of part A;

[0029] Figure 8 It is a schematic diagram of the bottom structure of the movable seat of the present invention.

[0030] In the figure: 1, male mold; 11, diverter hole; 12, drive cavity; 121, horizontal through cavity; 122, vertical through cavity; 123, triangular cavity; 13, main mold; 14, cover plate; 15, guide column; 2, female mold; 21, welding chamber; 22, mounting hole; 23, guide hole; 3, movable core head; 4, protective sleeve; 41, connecting slope; 5, main drive assembly; 50, vertical screw; 51, drive rod; 511, reciprocating screw; 512, horizontal screw; 52, upper bolt head; 53, first bearing seat; 54, screw Mother pair; 55, push rod; 56, nut sleeve; 57, horizontal rack; 58, second bearing seat; 59, driving gear; 6, movable seat; 61, discharge hole; 62, top plate; 63, column; 64, external threaded pipe; 65, internal threaded ring; 66, compound gear; 7, auxiliary drive assembly; 71, vertical shaft; 72, lower bolt head; 73, transmission gear; 8, fastening bolt; 81, limit gear block; 9, half-thread screw; 91, third bearing seat; 92, driven bevel gear; 93, internal nut column; 94, engaging gear block. DETAILED DESCRIPTION

[0031] 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.

[0032] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes an extrusion die and aluminum alloy forming method based on a locking installation structure.

[0033] Example 1: Please refer to Figure 1-Figure 4 , an extrusion die based on a locking installation structure, comprising a male die 1 and a female die 2, the male die 1 is provided with a diverter hole 11, the female die 2 is provided with a welding chamber 21, characterized in that: the male die 1 is provided with a movable core head 3, a protective sleeve 4 sleeved on the outer side of the movable core head 3 and a main drive component 5, a movable seat 6 and a secondary drive component 7 are provided in the welding chamber 21, and a discharge hole 61 is provided at the center of the movable seat 6, and the discharge hole 61 corresponds to the position of the movable core head 3;

[0034] A driving cavity 12 is provided inside the male mold 1, the movable core head 3 is installed in the driving cavity 12 and one end of the movable core head 3 extends outside the driving cavity 12, and the protective sleeve 4 is installed in the driving cavity 12 and sleeved on the outer side of the movable core head 3;

[0035] The main driving assembly 5 is installed in the driving cavity 12 and is in driving connection with the movable core head 3 and the protective sleeve 4. The main driving assembly 5 is used to drive the protective sleeve 4 and the movable core head 3 to move in the driving cavity 12.

[0036] The auxiliary driving assembly 7 is installed between the movable seat 6 and the inner wall of the welding chamber 21 and is in transmission connection with the movable seat 6. The auxiliary driving assembly 7 is used to drive the movable seat 6 to move;

[0037] Before the demolding operation, the auxiliary driving assembly 7 operates to force the movable seat 6 to move, thereby causing the movable core head 3 to be separated from the discharge hole 61. At the same time, the main driving assembly 5 operates to first drive the protective sleeve 4 to slide along the movable core head 3 until it completely wraps the movable core head 3, thereby cleaning the residual aluminum on the outside of the movable core head 3, and then driving the movable core head 3 and the protective sleeve 4 to move toward the inside of the driving cavity 12 at the same time, forcing the movable core head 3 to be pre-stored in the driving cavity 12 before demolding;

[0038] When the male mold 1 and the female mold 2 are combined, one end of the movable core head 3 extends into the discharge hole 61. When the aluminum material is heated, it enters the welding chamber 21 on the top of the movable seat 6 through the diversion hole 11, and then is extruded through the gap between the movable core head 3 and the discharge hole 61 to form a workpiece with a specific cross section.

[0039] When in use, before cleaning the residual aluminum in the mold by demolding, first start the auxiliary drive assembly 7 and the main drive assembly 5. When the auxiliary drive assembly 7 is running, it drives the movable seat 6 inside the welding chamber 21 to move, so that the movable core head 3 is separated from the discharge hole 61 on the movable seat 6. When the main drive assembly 5 is running, it first drives the protective sleeve 4 in the driving cavity 12 to move outward along the movable core head 3. When the protective sleeve 4 moves along the movable core head 3, it squeezes and pushes the residual aluminum that adheres to the outer wall of the movable core head 3, so that the residual aluminum is separated from the surface of the movable core head 3 until the protective sleeve 4 completely wraps the entire movable core head 3. Then the main drive assembly 5 continues to operate, driving the protective sleeve 4 and the movable core head 3 inside the protective sleeve 4 to move into the driving cavity 12 at the same time, until the protective sleeve 4 and the movable core head 3 are completely moved into the protective cavity. Due to the protection of the protective sleeve 4, the movable core head 3 avoids contact with the residual aluminum during the movement. Then, the residual aluminum in the mold is pulled out of the mold by demolding, and the movable core head 3 stored in the driving cavity 12 also avoids contact with the residual aluminum.

[0040] By providing a movable core head 3, a protective sleeve 4, a movable seat 6, a main drive assembly 5 and an auxiliary drive assembly 7, the movable core head 3 can be protected by driving the movable core head 3 to retract into the drive cavity 12 through the main drive assembly 5, so that the residual aluminum of the mold will not be damaged by contact with the movable core head 3 during the demolding operation, which is safer. In addition, through the cooperation of the auxiliary drive assembly 7 and the main drive assembly 5, the protective sleeve 4 can first move along the movable core head 3 to completely wrap the movable core head 3, which is beneficial to first squeeze the residual aluminum around the movable core head 3 to separate from the movable core head 3, thereby avoiding the movable core head 3 from contacting the residual aluminum during the storage process, and further reducing the probability of the movable core head 3 being worn.

[0041] Example 2: See Figure 3 and Figure 4 , which is different from the above embodiment, the male mold 1 includes a main mold 13, the driving cavity 12 is arranged on the main mold 13, the driving cavity 12 includes a transverse through cavity 121, a vertical through cavity 122 and a triangular cavity 123 which are interconnected, the transverse through cavity 121 extends to the top surface of the main mold 13, the vertical through cavity 122 extends to the bottom surface of the main mold 13, and a cover plate 14 is fixed to the top of the main mold 13 by bolts;

[0042] The top of the vertical through cavity 122 is connected to the middle of the horizontal through cavity 121, the triangular cavity 123 is located at the connection between the vertical through cavity 122 and the horizontal through cavity 121, the shape of the cover plate 14 corresponds to the shape of the top of the main mold 13, and the cross-sectional shape of the vertical through cavity 122 matches the cross-sectional shape of the protective sleeve 4;

[0043] When in use, the cover plate 14 can be disassembled by rotating the bolts on the cover plate 14 , which is beneficial for inspection and maintenance of the parts inside the driving chamber 12 .

[0044] Example 3, see Figure 4 and Figure 5 , which is different from the above embodiment, the protective sleeve 4 is slidably inserted in the vertical through-hole 122, and a connecting slope 41 is provided at the bottom end of the protective sleeve 4. The movable core head 3 is slidably inserted in the protective sleeve 4, and a screw hole is provided at the top of the movable core head 3. The main driving assembly 5 includes a driving rod 51 and a vertical screw 50. The driving rod 51 includes a driving rod 51 located inside the transverse through-hole 121, and the driving rod 51 includes two groups of reciprocating screw rods 511 and a transverse screw rod 512 connected end to end. An upper bolt head 52 is provided at the end of the driving rod 51. The driving rod 51 is installed in the transverse through-hole 121 through a first bearing seat 53, and screws are installed on both groups of reciprocating screw rods 511. The female pair 54, the two nut pairs 54 are slidably connected to the inner wall of the transverse through-cavity 121, the bottoms of the two nut pairs 54 are hinged with push rods 55, the bottom ends of the two push rods 55 are hinged to the top of the protective sleeve 4, the transverse screw 512 is threadedly connected with a nut sleeve 56, the nut sleeve 56 is slidably connected to the inner wall of the transverse through-cavity 121, and a transverse rack 57 is fixed on the nut sleeve 56. The vertical screw 50 is installed in the vertical through-cavity 122 through the second bearing seat 58, the bottom end of the vertical screw 50 is inserted into the movable core head 3 and is threadedly connected to the movable core head 3, and the top of the vertical screw 50 is fixedly connected with a driving gear 59, and the driving gear 59 corresponds to the position of the transverse rack 57;

[0045] Among them, the slope setting of the connecting slope 41 at the bottom end of the protective sleeve 4 is respectively smoothly connected with the outer wall of the movable core head 3 and the bottom wall of the diversion hole 11. By setting the connecting slope 41, when the protective sleeve 4 moves along the movable core head 3, the connecting slope 41 can effectively squeeze the residual aluminum attached to the surface of the movable core head 3 and push it to detach from the movable core head 3; the driving rod 51 is horizontally arranged, and the nut pair 54 and the nut sleeve 56 are both horizontally slidably connected to the transverse through cavity 121. In the initial state, a spacing is set between the transverse rack 57 and the driving gear 59, and the bottom end of the vertical screw 50 matches the screw hole at the top of the movable core head 3, so as to realize the threaded connection with the movable core head 3. In this embodiment, the cross-section of the movable core head 3 is set to be square, and in actual applications, it can also be set to other non-circular cross-sections according to mold processing requirements;

[0046] When in use, the upper bolt head 52 is rotated to drive the driving rod 51 to rotate, and the two sets of reciprocating screws 511 and the cross screw 512 on the driving rod 51 rotate. When the two sets of reciprocating screws 511 rotate, the two nut pairs 54 are driven to approach each other at the same time, thereby driving the top ends of the two push rods 55 to move horizontally. The inclination angles of the two push rods 55 change synchronously and the bottom ends simultaneously push the protective sleeve 4 to move downward, so that the protective sleeve 4 moves outward along the movable core head 3. At the same time, when the cross screw 512 rotates, the nut sleeve 56 is driven to move horizontally, thereby driving the horizontal rack 57 to move horizontally. When the protective sleeve 4 moves to completely wrap the movable core head 3, the nut pair 54 just moves to the end of the reciprocating screw 511, and the horizontal rack 57 moves horizontally. The rack 57 just moves to mesh with the driving gear 59, and then the reciprocating screw 511 that continues to rotate causes the nut pair 54 to move in the opposite direction, and similarly drives the protective sleeve 4 to retract into the driving chamber 12, and the continuously rotating transverse screw 512 drives the nut sleeve 56 and the transverse rack 57 to continue to move transversely, and the transverse rack 57 drives the driving gear 59 to rotate when it moves, and the driving gear 59 drives the vertical screw 50 to rotate when it rotates, and the vertical screw 50 drives the movable core head 3 to retract into the driving chamber 12 when it rotates. That is, at this time, the movable core head 3 and the protective sleeve 4 retract into the driving chamber 12 synchronously, and finally the protective sleeve 4 is reset to the driving chamber 12, and the movable core head 3 is also completely received in the protective sleeve 4;

[0047] By arranging a protection component in the driving cavity 12, the protection sleeve 4 can be driven to move along the movable core head 3 until it completely wraps the movable core head 3 by rotating the upper bolt head 52, and then the protection sleeve 4 and the movable core head 3 can be driven to move synchronously into the driving cavity 12 at the same time, which is beneficial to the storage and protection of the movable core head 3, and avoids the residual aluminum from contacting the movable core head 3 and damaging the movable core head 3 during the subsequent demolding process. In addition, by driving the protection sleeve 4 to move first, the residual aluminum on the outer wall of the movable core head 3 can be cleaned in advance, and the movable core head 3 can avoid contact with the residual aluminum and thus damage during the storage process, which has higher safety. When rotating the upper bolt head 52, only common tools such as a screwdriver or a socket are needed, and the operation is simple and efficient.

[0048] Example 4, see Figure 4-Figure 8, which is different from the above embodiment, the movable seat 6 includes a top plate 62 and a column 63 arranged at the bottom center of the top plate 62, the column 63 is rotatably connected to an external threaded tube 64 on the outside, the external threaded tube 64 is movably plugged with the inner bottom wall of the welding chamber 21, the outer side of the external threaded tube 64 is threadedly connected to an internal threaded ring 65, the internal threaded ring 65 is rotatably connected to the inner bottom wall of the welding chamber 21, and a composite gear 66 is arranged on the outer edge of the internal threaded ring 65, the auxiliary driving assembly 7 includes a vertical shaft 71, the vertical shaft 71 passes through the inner bottom wall of the welding chamber 21 and is rotatably connected to the inner bottom wall of the welding chamber 21, a lower bolt head 72 is fixed to one end of the vertical shaft 71 located outside the welding chamber 21, and a transmission gear 73 is fixed to one end of the vertical shaft 71 located inside the welding chamber 21, and the transmission gear 73 is meshed with the composite gear 66;

[0049] The composite gear 66 is sleeved on the outside of the internal thread ring 65 and is formed integrally with the internal thread ring 65. The edge of the composite gear 66 is provided with a straight tooth block and a bevel tooth block.

[0050] When in use, the lower bolt head 72 is rotated to drive the vertical shaft 71 to rotate, and the vertical shaft 71 rotates to drive the transmission gear 73 to rotate, and the transmission gear 73 rotates to drive the composite gear 66 to rotate, thereby driving the internal thread ring 65 to rotate, and the internal thread ring 65 rotates to drive the external thread tube 64 to rotate downward, and the external thread tube 64 rotates downward to drive the column 63 to move downward, thereby causing the entire movable seat 6 to move downward in the welding chamber 21, and when the movable seat 6 moves downward, the movable core head 3 is separated from the discharge hole 61 on the movable seat 6;

[0051] By setting up the auxiliary driving assembly 7, the lower bolt head 72 can be rotated to drive the movable seat 6 to move downward, thereby making the movable core head 3 disengage from the discharge hole 61, ensuring that the protective sleeve 4 can completely wrap the entire movable core head 3, so as to clean the residual aluminum outside the entire movable core head 3. In addition, after the movable seat 6 moves downward, the space on the top of the movable seat 6 increases, and the residual aluminum is easier to detach from the movable core head 3 when squeezed by the protective push tube.

[0052] Example 5, see Figure 6-Figure 8, which is different from the above embodiment, the female mold 2 is provided with a mounting hole 22, the side wall of the mounting hole 22 is provided with a socket connected to the inside of the welding chamber 21, a fastening bolt 8 is arranged in the mounting hole 22, the female mold 2 is connected to the male mold 1 through the fastening bolt 8, a plurality of limiting tooth blocks 81 distributed in a ring array are arranged on the side wall of the fastening bolt 8, a half-tooth screw 9 is arranged in the welding chamber 21, the half-tooth screw 9 is connected to the inner bottom wall of the welding chamber 21 through a third bearing seat 91, one end of the half-tooth screw 9 is fixedly connected to a driven bevel gear 92, the driven bevel gear 92 is meshed with the composite gear 66, the other end of the half-tooth screw 9 is threadedly connected to an inner nut column 93, one end of the inner nut column 93 is movably plugged with the socket, and a locking tooth block 94 is arranged at the end of the inner nut column 93, a guide column 15 is arranged at the bottom of the male mold 1, and a guide hole 23 matching the guide column 15 is arranged at the top of the female mold 2;

[0053] Among them, the male mold 1 is provided with screw holes matching the fastening bolts 8, the mounting holes 22 and the fastening bolts 8 are preferably set to four, four sets of half-thread screws 9 are provided in the welding chamber 21, and they are matched with the four fastening bolts 8 respectively, the inner diameter of the mounting hole 22 is larger than the diameter of the fastening bolt 8, and the fastening bolt 8 is inserted into the mounting hole 22 and then screwed into the screw hole on the male mold 1 to achieve connection, the cross section of the jack is set to be square, and the cross section of the inner nut column 93 is set to be square matching the cross section of the jack, and when the fastening bolt 8 is installed, the limiting tooth block 81 on the fastening bolt 8 corresponds to the position of the jack;

[0054] When in use, the male mold 1 and the female mold 2 are first connected by the fastening bolt 8. When the composite gear 66 rotates, the driven bevel gear 92 is driven to rotate, and the driven bevel gear 92 drives the half-thread screw 9 to rotate. When the half-thread screw 9 rotates, the inner nut column 93 is driven to move along the insertion hole into the mounting hole 22. When the inner nut column 93 moves, it drives the engaging tooth block 94 to move, and finally the engaging tooth block 94 moves to mesh with the limiting tooth block 81 on the fastening bolt 8. The engagement between the tooth blocks can effectively prevent the fastening bolt 8 from loosening. When the composite gear 66 rotates in the opposite direction, the engaging tooth block 94 is disengaged from the limiting tooth block 81, thereby releasing the limit on the fastening bolt 8.

[0055] By improving the fastening bolt 8 and arranging a half-thread screw 9 and an inner nut column 93 matching the fastening bolt 8 in the welding chamber 21, when the composite gear 66 rotates, the inner nut column 93 is also driven to move, and the fastening bolt 8 is limited by the engaging tooth block 94 on the inner nut column 93, which can prevent the fastening bolt 8 from rotating loose, thereby making the male mold 1 and the female mold 2 tightly connected when in use.

[0056] Working principle: When in use, before cleaning the residual aluminum in the mold through the demolding work, first rotate the upper bolt head 52 and the lower bolt head 72, and then rotate the lower bolt head 72 to drive the vertical shaft 71 to rotate, and when the vertical shaft 71 rotates, it drives the transmission gear 73 to rotate, and when the transmission gear 73 rotates, it drives the composite gear 66 to rotate, and then drives the internal thread ring 65 to rotate, and when the internal thread ring 65 rotates, it drives the external thread tube 64 to rotate downward, and when the external thread tube 64 rotates downward, it drives the column 63 to move downward, so that the entire movable seat 6 moves downward in the welding chamber 21, and when the movable seat 6 moves downward, the movable core head 3 is separated from the discharge hole 61 on the movable seat 6;

[0057] The upper bolt head 52 is rotated to drive the driving rod 51 to rotate, and the two sets of reciprocating screws 511 and the transverse screw 512 on the driving rod 51 rotate. When the two sets of reciprocating screws 511 rotate, the two nut pairs 54 are driven to approach each other, thereby driving the top ends of the two push rods 55 to move horizontally. The inclination angles of the two push rods 55 change synchronously and the bottom ends simultaneously push the protective sleeve 4 to move downward, so that the protective sleeve 4 moves outward along the movable core head 3. At the same time, when the transverse screw 512 rotates, the nut sleeve 56 is driven to move horizontally, thereby driving the transverse rack 57 to move horizontally. When the protective sleeve 4 moves to completely wrap the movable core head 3, the nut pair 54 just moves to the end of the reciprocating screw 511, and the transverse rack 57 just moves to the drive gear 5 9 meshes, and then the reciprocating screw rod 511 that continues to rotate causes the nut pair 54 to move in the opposite direction, and similarly drives the protective sleeve 4 to retract into the driving cavity 12, and the horizontal screw rod 512 that continues to rotate drives the nut sleeve 56 and the horizontal rack 57 to continue to move horizontally, and the horizontal rack 57 drives the driving gear 59 to rotate when it moves, and the driving gear 59 drives the vertical screw rod 50 to rotate when it rotates, and the vertical screw rod 50 drives the movable core head 3 to retract into the driving cavity 12 when it rotates. That is, at this time, the movable core head 3 and the protective sleeve 4 retract into the driving cavity 12 synchronously, and finally the protective sleeve 4 is reset to the driving cavity 12, and the movable core head 3 is also completely received in the protective sleeve 4, and the residual aluminum will not contact the movable core head 3 when the demolding work is performed later;

[0058] By providing a movable core head 3, a protective sleeve 4, a movable seat 6, a main drive assembly 5 and an auxiliary drive assembly 7, the movable core head 3 can be protected by driving the movable core head 3 to retract into the drive cavity 12 through the main drive assembly 5, so that the residual aluminum of the mold will not be damaged by contact with the movable core head 3 during the demolding operation, which is safer. In addition, through the cooperation of the auxiliary drive assembly 7 and the main drive assembly 5, the protective sleeve 4 can first move along the movable core head 3 to completely wrap the movable core head 3, which is beneficial to first squeeze the residual aluminum around the movable core head 3 to separate from the movable core head 3, thereby avoiding the movable core head 3 from contacting the residual aluminum during the storage process, and further reducing the probability of the movable core head 3 being worn.

[0059] 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 extrusion die based on a locking installation structure, comprising a male die and a female die, wherein the male die is provided with a diversion hole, and the female die is provided with a welding chamber, characterized in that: The male mold is provided with a movable core head, a protective sleeve sleeved on the outside of the movable core head and a main drive assembly, the welding chamber is provided with a movable seat and a secondary drive assembly, the center of the movable seat is provided with a discharge hole, and the discharge hole corresponds to the position of the movable core head; A driving cavity is arranged inside the male mold, the movable core head is installed in the driving cavity and one end of the movable core head extends outside the driving cavity, and the protective sleeve is installed in the driving cavity and sleeved on the outer side of the movable core head; The main driving assembly is installed in the driving cavity and is in driving connection with the movable core head and the protective sleeve, and the main driving assembly is used to drive the protective sleeve and the movable core head to move in the driving cavity; The auxiliary driving assembly is installed between the movable seat and the inner wall of the welding chamber and is in transmission connection with the movable seat, and the auxiliary driving assembly is used to drive the movable seat to move; Before the demolding operation, the auxiliary driving assembly operates to force the movable seat to move, thereby causing the movable core head to be separated from the discharge hole. At the same time, the main driving assembly operates to first drive the protective sleeve to slide along the movable core head until it completely wraps the movable core head, thereby cleaning the residual aluminum on the outside of the movable core head, and then driving the movable core head and the protective sleeve to move toward the inside of the driving cavity at the same time, forcing the movable core head to be pre-stored in the driving cavity before demolding; The main driving assembly comprises a driving rod and a vertical screw, the driving rod comprises a driving rod located inside the transverse through-cavity, the driving rod comprises two groups of reciprocating screw rods and a transverse screw rod connected end to end, an upper bolt head is arranged at the end of the driving rod, the driving rod is installed in the transverse through-cavity through a first bearing seat, nut pairs are installed on the two groups of reciprocating screw rods, the two nut pairs are slidably connected to the inner wall of the transverse through-cavity, the bottoms of the two nut pairs are hinged with push rods, the bottom ends of the two push rods are hinged to the top of the protective sleeve, a nut sleeve is threadedly connected on the transverse screw, the nut sleeve is slidably connected to the inner wall of the transverse through-cavity, a transverse rack is fixed on the nut sleeve, the vertical screw is installed in the vertical through-cavity through a second bearing seat, the bottom end of the vertical screw is inserted into the movable core head and is threadedly connected to the movable core head, the top of the vertical screw is fixedly connected with a driving gear, and the driving gear corresponds to the position of the transverse rack; The movable seat comprises a top plate and a column arranged at the center of the bottom of the top plate, an externally threaded tube is rotatably connected to the outside of the column, the externally threaded tube is movably plugged with the bottom wall of the welding chamber, an externally threaded tube is threadedly connected to an internally threaded ring, the internally threaded ring is rotatably connected to the bottom wall of the welding chamber, and a composite gear is arranged on the outer edge of the internally threaded ring; The auxiliary driving assembly includes a vertical shaft, the vertical shaft passes through the bottom wall of the welding chamber and is rotatably connected to the bottom wall of the welding chamber, a lower bolt head is fixed to one end of the vertical shaft located outside the welding chamber, and a transmission gear is fixed to one end of the vertical shaft located inside the welding chamber, and the transmission gear is meshed with the composite gear; The female mold is provided with a mounting hole, a plug hole communicating with the interior of the welding chamber is opened on the side wall of the mounting hole, a fastening bolt is arranged in the mounting hole, the female mold is connected to the male mold through the fastening bolt, and a plurality of limiting tooth blocks distributed in a ring array are arranged on the side wall of the fastening bolt; A half-thread screw is provided in the welding chamber, and the half-thread screw is connected to the bottom wall of the welding chamber through a third bearing seat. One end of the half-thread screw is fixedly connected to a driven bevel gear, and the driven bevel gear is meshed with the composite gear. The other end of the half-thread screw is threadedly connected to an inner nut column, and one end of the inner nut column is movably plugged into the socket. An engaging tooth block is provided at the end of the inner nut column. When the composite gear rotates, the inner nut column is driven to move, and the engaging tooth block on the inner nut column limits the fastening bolt. When the composite gear rotates in the opposite direction, the engaging tooth block disengages from the limiting tooth block, thereby releasing the limit on the fastening bolt.

2. The extrusion die based on the locking installation structure according to claim 1, characterized in that: The male mold includes a main mold, and the driving cavity is arranged on the main mold. The driving cavity includes a transverse through cavity, a vertical through cavity and a triangular cavity that are interconnected. The transverse through cavity extends to the top surface of the main mold, and the vertical through cavity extends to the bottom surface of the main mold. A cover plate is fixed to the top of the main mold by bolts.

3. The extrusion die based on the locking installation structure according to claim 2, characterized in that: The protective sleeve is slidably inserted in the vertical through cavity, a connecting slope is arranged at the bottom end of the protective sleeve, the movable core head is slidably inserted in the protective sleeve, and a screw hole is arranged at the top end of the movable core head.

4. The extrusion die based on the locking installation structure according to claim 1, characterized in that: The bottom of the male mold is provided with a guide column, and the top of the female mold is provided with a guide hole matching the guide column.

5. A method for forming an aluminum alloy, characterized in that: The aluminum alloy forming method uses an extrusion die based on a locking installation structure as described in any one of claims 1 to 4.

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