阅读说明：本技术 一种低压铸造机 (Low-pressure casting machine ) 是由 李健森 于 2021-08-27 设计创作，主要内容包括：本发明涉及有色金属铸造技术领域,且公开了一种低压铸造机,包括炉体,所述炉体的内部放置有加热件,且加热件上放置有坩埚,所述炉体的顶端固定安装有密封盖,所述密封盖的一侧内部固定套接有通气管,所述密封盖的另一侧内部固定套接有通液管,所述密封盖的中部固定套接有升液管,所述升液管的下端外表面固定套接漏网。本发明通过在坩埚的内部设置固定环和阻挡件,并在固定环内开设过液孔,使得在坩埚加入金属液时其先充满整个阻挡件内后再溢流到过液孔,过液孔的弧度设置有利于金属液呈现附壁效应,有效的降低了金属液进液对坩埚的冲击力,使得坩埚内液面流动平缓,缩短了金属液的有效静置时间,提高了铸造机的工作效率。(The invention relates to the technical field of nonferrous metal casting, and discloses a low-pressure casting machine which comprises a furnace body, wherein a heating element is placed in the furnace body, a crucible is placed on the heating element, a sealing cover is fixedly installed at the top end of the furnace body, a vent pipe is fixedly sleeved in one side of the sealing cover, a liquid through pipe is fixedly sleeved in the other side of the sealing cover, a liquid lifting pipe is fixedly sleeved in the middle of the sealing cover, and a leaking net is fixedly sleeved on the outer surface of the lower end of the liquid lifting pipe. According to the invention, the fixing ring and the blocking piece are arranged in the crucible, and the liquid passing hole is formed in the fixing ring, so that when molten metal is added into the crucible, the molten metal fills the whole blocking piece and then overflows to the liquid passing hole, the radian of the liquid passing hole is favorable for the molten metal to show a wall attachment effect, the impact force of the molten metal liquid to the crucible is effectively reduced, the liquid level in the crucible flows smoothly, the effective standing time of the molten metal is shortened, and the working efficiency of the casting machine is improved.)

1. The utility model provides a low pressure casting machine, includes furnace body (1), the heating member has been placed to the inside of furnace body (1), and has placed crucible (2) on the heating member, the top fixed mounting of furnace body (1) has sealed lid (11), the inside fixed cover in one side of sealed lid (11) has connect breather pipe (12), the inside fixed cover in opposite side of sealed lid (11) has connect liquid pipe (13), the fixed stalk (21) that have cup jointed in middle part of sealed lid (11), its characterized in that: the outer fixed surface of the lower end of the liquid lifting pipe (21) is fixedly sleeved with the drain net (3), the outer ring of the drain net (3) is fixedly sleeved with the inner wall of the crucible (2), the inner wall of the crucible (2) above the drain net (3) is fixedly sleeved with the fixing ring (4), the side of the fixing ring (4) fixedly connected with the inner wall of the crucible (2) is provided with a liquid passing hole (41), the top end fixedly connected with of the fixing ring (4) is provided with a baffle (7), the inner part of the baffle (7) is movably sleeved with the movable ring plate (8), and the bottom end of the movable ring plate (8) is connected with the top end of the fixing ring (4) through a spring.

2. A low pressure casting machine according to claim 1, characterized in that: with the both sides of crossing the activity crown plate (8) that liquid hole (41) position corresponds are embedded to have fixed block (81), are located the fixed ring (4) bottom of fixed block (81) below has seted up the lower groove, is located the inslot portion down fixed ring (4) top fixed connection fixed column, and the outside activity of fixed column cup joints movable rod (5), there are clearance pole (6) bottom of movable rod (5) through spring coupling, with the highly the same lower inslot wall of movable rod (5) is seted up porosely, and downthehole fixedly connected with stopper (42).

3. A low pressure casting machine according to claim 1, characterized in that: the leakage net (3) is of an annular structure with a concave top end.

4. A low pressure casting machine according to claim 1, characterized in that: the cross section of the interior of the liquid passing hole (41) is arc-shaped, and the length of the inlet end of the liquid passing hole (41) is twice of that of the outlet end of the liquid passing hole.

5. A low pressure casting machine according to claim 1, characterized in that: the baffle (7) is composed of two rings, the height of the ring with the smaller radius is twice that of the ring with the larger radius, the outlet end of the liquid passing pipe (13) corresponds to the baffle (7), and the ring with the smaller radius of the baffle (7) is overlapped with the height of the liquid passing pipe (13).

6. A low pressure casting machine according to claim 2, wherein: the two ends of the cleaning rod (6) are fixedly connected with rubber blocks.

7. A low pressure casting machine according to claim 2, wherein: the quantity of crossing liquid hole (41) is six, and encircles solid fixed ring (4) and evenly set up, with fixed block (81) of crossing that liquid hole (41) corresponds have six groups, and every group fixed block (81) quantity is two, and is a set of fixed block (81) correspond a movable rod (5), and a movable rod (5) correspond a set of stopper (42), and are a set of the quantity of stopper (42) is four, and encircles the lower groove setting.

8. A low pressure casting machine according to claim 7, wherein: the fixed block (81) has N type magnetism, the movable rod (5) has N type magnetism, the limiting block (42) which is located on the same vertical section with the fixed block (81) has S type magnetism, and the limiting block (42) which is located on the non-same vertical section with the fixed block (81) has N type magnetism.

Technical Field

The invention relates to the technical field of nonferrous metal casting, in particular to a low-pressure casting machine.

Background

Low-pressure casting is a casting method in which a metal liquid fills a cavity from bottom to top under pressure and is solidified and formed, and is called low-pressure casting because of the low pressure used. The existing low-pressure casting machine generally comprises a heat preservation furnace, a crucible, a liquid lifting pipe, a mold opening and closing mechanism of the liquid lifting pipe, a pneumatic system and the like, wherein gas is injected into the crucible, so that molten metal enters the liquid lifting pipe after being extruded, and enters a mold cavity through the liquid lifting pipe to be cooled and finally shaped.

However, the existing low-pressure casting machine has some defects in the use process: after the molten metal in the crucible is used up, need add new molten metal through liquid pipe, thereby guarantee that low pressure casting machine is incessant to use, nevertheless because the crucible itself stores up the metal slag after long-term the use, if do not effectively stew after pouring into the molten metal, then can produce more new metal slag, lead to the molten metal impure on the one hand, make the product of pouring have the flaw, influence product life, on the other hand too much metal slag is piled up, the adhesion is around the crucible inner wall, can make its volume reduce, influence the heat preservation effect simultaneously, but if stew to the molten metal for a long time, then influence low pressure casting machine's work efficiency, improve its working cost.

Disclosure of Invention

Aiming at the defects of the existing low-pressure casting machine in the use process in the background art, the invention provides the low-pressure casting machine which has the advantages that the effective standing time is shortened when molten metal is added, and metal slag attached to the inner part of a crucible is effectively cleaned when gas is introduced, so that the working efficiency of the casting machine is improved, the heat transfer is accelerated, the electric energy is saved, and the technical problems in the background art are solved.

The invention provides the following technical scheme: the utility model provides a low-pressure casting machine, includes the furnace body, the heating member has been placed to the inside of furnace body, and has placed the crucible on the heating member, the top fixed mounting of furnace body has sealed lid, the inside fixed cover in one side of sealed lid has connect the breather pipe, the inside fixed cover of opposite side of sealed lid has connect the liquid pipe, the fixed stalk that has cup jointed in middle part of sealed lid, the lower extreme external surface of stalk is fixed cup joints the small screen, and the outer lane of small screen cup joints with the inner wall of crucible is fixed, is located the fixed solid fixed ring that cup joints of crucible inner wall of small screen top, with the solid fixed ring side of crucible inner wall fixed connection is seted up and is equipped with the liquid hole, gu fixed ring's top fixedly connected with stops, the inside activity that stops has cup jointed movable ring plate, and the bottom of movable ring plate passes through spring coupling with solid fixed ring's top.

Preferably, with the both sides of crossing the activity crown plate that liquid hole position corresponds are embedded to have the fixed block, are located the solid fixed ring bottom of fixed block below has seted up down the groove, are located down inslot portion gu fixed ring top fixed connection fixed column, and the outside activity of fixed column cup joints the movable rod, there is the clearance pole bottom of movable rod through spring coupling, with the lower inslot wall that the movable rod height is the same sets up porosely, and downthehole fixedly connected with stopper.

Preferably, the leakage net is of a ring structure with a concave top end.

Preferably, the cross-sectional shape of the inside of the liquid passing hole is arc-shaped, and the length of the inlet end of the liquid passing hole is twice of that of the outlet end of the liquid passing hole.

Preferably, the blocking member is composed of two rings, the height of the ring with the smaller radius is twice that of the ring with the larger radius, the outlet end of the liquid flowing pipe corresponds to the position of the blocking member, and the ring with the smaller radius of the blocking member is overlapped with the height of the liquid flowing pipe.

Preferably, both ends of the cleaning rod are fixedly connected with rubber blocks.

Preferably, the quantity of crossing the liquid hole is six, and encircles solid fixed ring and evenly set up, with the fixed block of crossing the liquid hole and corresponding has six groups, and every fixed block quantity of group is two, and is a set of the fixed block corresponds a movable rod, and a movable rod corresponds a set of stopper, and is a set of the quantity of stopper is four, and encircles the setting of lower groove.

Preferably, the fixed block has N type magnetism, the movable rod has N type magnetism, the limiting block located on the same vertical section with the fixed block has S type magnetism, and the limiting block located on the non-same vertical section with the fixed block has N type magnetism.

The invention has the following beneficial effects:

1. according to the invention, the fixing ring and the blocking piece are arranged in the crucible, and the liquid passing hole is formed in the fixing ring, so that when molten metal is added into the crucible, the molten metal fills the whole blocking piece and then overflows to the liquid passing hole, the radian of the liquid passing hole is set to be beneficial to the molten metal to show a wall attachment effect, the impact force of the molten metal liquid inlet on the crucible is effectively reduced, the liquid level in the crucible flows smoothly, the effective standing time of the molten metal is shortened, the working efficiency of a casting machine is improved, the excessive molten metal slag is prevented from being generated, the casting quality is ensured, meanwhile, the heat transfer rate of the crucible is effectively improved due to the wall attachment flow of the molten metal, the molten metal can be heated and kept warm rapidly, and the electric energy saving effect is achieved.

2. According to the invention, the movable rod is arranged in the fixed ring and is movably connected with the cleaning rod, when gas is introduced into the crucible, the downward thrust generated by the gas effectively promotes the cleaning rod to rub and clean the inner wall of the crucible and the outer wall of the liquid lifting pipe, so that the adhesion of metal slag in the crucible is reduced, the heat transfer between the furnace body and the crucible is accelerated, and the electric energy is further saved.

3. According to the invention, the movable ring plate is arranged in the blocking piece, so that the movable ring plate is lifted after the molten metal is completely added and plays a role in cleaning the inside of the blocking piece, waste or agglomeration caused by residual molten metal in the blocking piece is prevented, and meanwhile, the fixed block and the movable rod have the same magnetism, so that the movable rod rotates to change the direction when the movable ring plate descends, the interference on the flowing of the molten metal attached wall caused by the contact of the cleaning rod and the crucible is avoided, and the molten metal is further protected from flowing smoothly.

Drawings

FIG. 1 is a schematic view of the overall structure of a liquid feeding tube for feeding molten metal according to the present invention;

FIG. 2 is an enlarged view of a portion of the structure A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the overall structure of the vent pipe of the present invention when gas is introduced;

FIG. 4 is an enlarged view of a portion of the structure shown at B in FIG. 3 according to the present invention;

FIG. 5 is a schematic top sectional view of a crucible of the present invention positioned at a stopper;

FIG. 6 is a schematic view of the sectional structure of the crucible at the movable rod in a top view according to the present invention;

FIG. 7 is a schematic top sectional view of the crucible at the cleaning rod according to the present invention.

In the figure: 1. a furnace body; 11. a sealing cover; 12. a breather pipe; 13. a liquid pipe is communicated; 14. a mold mechanism; 2. a crucible; 21. a riser tube; 3. a leakage net; 4. a fixing ring; 41. a liquid passing hole; 42. a limiting block; 5. a movable rod; 6. cleaning the rod; 7. a blocking member; 8. a movable ring plate; 81. and (5) fixing blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a low pressure casting machine comprises a furnace body 1, a heating element is placed inside the furnace body 1, a crucible 2 is placed on the heating element, a sealing cover 11 is fixedly installed at the top end of the furnace body 1, a vent pipe 12 is fixedly sleeved inside one side of the sealing cover 11, a liquid through pipe 13 is fixedly sleeved inside the other side of the sealing cover 11, a liquid lift pipe 21 is fixedly sleeved in the middle of the sealing cover 11, a mold mechanism 14 is fixedly sleeved on the liquid lift pipe 21 at the top end of the sealing cover 11, a leakage net 3 is fixedly sleeved on the outer surface of the lower end of the liquid lift pipe 21, the outer ring of the leakage net 3 is fixedly sleeved with the inner wall of the crucible 2, a fixing ring 4 is fixedly sleeved on the inner wall of the crucible 2 above the leakage net 3, a liquid through hole 41 is arranged on the side of the fixing ring 4 fixedly connected with the inner wall of the crucible 2, a blocking member 7 is fixedly connected with the top end of the fixing ring 4, and a movable ring plate 8 is movably sleeved inside the blocking member 7, and the bottom end of the movable ring plate 8 is connected with the top end of the fixed ring 4 through a spring.

Referring to fig. 2 and 4, the perforated net 3 is a ring structure with a concave top end, which is beneficial for collecting the metal slag in the middle of the perforated net 3 when the metal slag falls off after being cleaned by the cleaning rod 6, and preventing the metal slag from falling to the bottom end of the crucible 2 and being sucked by the lift tube 21.

Referring to fig. 2 and 4, the cross-sectional shape of the interior of the liquid passing hole 41 is an arc, and the length of the inlet end of the liquid passing hole 41 is twice as long as the length of the outlet end thereof, so as to effectively promote the molten metal to flow into the liquid passing hole 41 as much as possible, and to adhere to the inner wall of the crucible 2 when flowing out of the liquid passing hole 41, thereby effectively reducing the flow impact of the molten metal.

Referring to fig. 2 and 4, the blocking member 7 is composed of two rings, the height of the ring with smaller radius is twice that of the ring with larger radius, the outlet end of the liquid flowing pipe 13 corresponds to the position of the blocking member 7, and the ring with smaller radius of the blocking member 7 overlaps with the height of the liquid flowing pipe 13, so that the blocking member 7 can effectively block the liquid from overflowing to the middle part of the crucible 2 when the liquid flowing pipe 13 discharges the molten metal, and guide the liquid to flow to the liquid passing hole 41, effectively disperse the molten metal, promote the molten metal to flow along the wall, slow down the impact force of the molten metal, and shorten the standing time of the molten metal.

Referring to fig. 2 and 4-7, further, fixed blocks 81 are embedded in two sides of the movable ring plate 8 corresponding to the positions of the liquid passing holes 41, a lower groove is formed at the bottom end of the fixed ring 4 below the fixed blocks 81, a fixed column is fixedly connected to the top end of the fixed ring 4 inside the lower groove, a movable rod 5 is movably sleeved outside the fixed column, the bottom end of the movable rod 5 is connected with a cleaning rod 6 through a spring, a hole is formed in the inner wall of the lower groove at the same height as the movable rod 5, and a limit block 42 is fixedly connected in the hole.

Referring to fig. 7, the two ends of the cleaning rod 6 are fixedly connected with rubber blocks, so as to effectively prevent the cleaning rod 6 from touching the friction crucible 2 and the lift tube 21 due to too short length or prevent the cleaning rod 6 from being locked by the crucible 2 and the lift tube 21 and from rotating due to too long length.

Referring to fig. 4-6, the number of the liquid passing holes 41 is six, and the liquid passing holes are uniformly arranged around the fixing ring 4, the fixing blocks 81 corresponding to the liquid passing holes 41 have six groups, and the number of the fixing blocks 81 in each group is two, one group of the fixing blocks 81 corresponds to one movable rod 5, one movable rod 5 corresponds to one group of the limiting blocks 42, and one group of the limiting blocks 42 has four and is arranged around the lower groove, the symmetrical arrangement of the liquid passing holes 41, the fixing blocks 81, the movable rods 5 and the limiting blocks 42 effectively promotes the molten metal to uniformly flow around the crucible 2, and simultaneously promotes the movable rods 5 to drive each cleaning rod 6 to rotate, so that the cleaning rods 6 play a role.

Referring to fig. 4-6, the fixed block 81 has N-type magnetism, the movable rod 5 has N-type magnetism, the limiting block 42 located on the same vertical section as the fixed block 81 has S-type magnetism, and the limiting block 42 located on a different vertical section from the fixed block 81 has N-type magnetism, so that the magnetic repulsion between the movable rod 5 and the fixed block 81 when the fixed block 81 descends drives the movable rod 5 to rotate ninety degrees, and the movable rod 5 contacts the S-type limiting block 42 when the fixed block 81 is not in a descending state, so as to effectively drive the movable rod 5 to drive the cleaning rod 6 to rotate, so that the cleaning rod 6 can avoid the crucible 2 or the cleaning rod 6 can rub the crucible 2.

The using method of the invention has the following working principle:

when the molten metal in the crucible 2 is used up, new molten metal is filled into the crucible 2 through the liquid through pipe 13, because the outlet end of the liquid through pipe 13 is opposite to the blocking piece 7, the molten metal firstly flows to the groove formed by the blocking piece 7 and fills the inside of the blocking piece 7, then the molten metal flows to the liquid through hole 41 along the lower end of the blocking piece 7, and the molten metal flows along the inner wall of the crucible 2 along the wall of the crucible 2 through the liquid through hole 41 and flows to the bottom of the crucible 2, thereby effectively dispersing the impact force caused by the falling of the molten metal and slowing down the flowing speed of the molten metal, further shortening the effective standing time of the molten metal in the later period, improving the extraction purity and the working efficiency of the molten metal, simultaneously accelerating the heat transfer between the furnace body 1 and the crucible 2 and the molten metal due to the wall flowing of the molten metal, achieving the effect of saving electric energy, and simultaneously, the movable annular plate 8 positioned in the middle of the blocking piece 7 moves downwards under the gravity of the molten metal, because the fixed block 81 and the movable rod 5 have the same magnetism, when the movable ring plate 8 descends, the magnetic repulsion force between the movable ring plate 8 and the movable rod 5 is larger than the magnetic force between the movable rod 5 and the limiting block 42, so that the movable rod 5 rotates 90 degrees and drives the cleaning rod 6 to rotate 90 degrees, at this time, the two ends of the cleaning rod 6 are not in contact with the crucible 2 and the riser pipe 21 any more, the cleaning rod 6 effectively prevents the wall-attached movement of molten metal from being obstructed, after the molten metal is completely conveyed, the movable ring plate 8 can rebound to clean the residual molten metal between the blocking pieces 7, the cleaning rod 6 returns to the contact state with the crucible 2 and the riser pipe 21, when the low-pressure casting machine starts to work, when the crucible 2 is filled with gas through the vent pipe 12, because the outlet end of the vent pipe 12 is not directly opposite to the movable ring plate 8, the movable ring plate 8 is not forced to be pressed down when the gas is supplied to the vent pipe 12, at this time, the two ends of the cleaning rod 6 are always kept in contact with the riser pipe 21, Crucible 2 contact state, gaseous decurrent power of blowing and the spring tension of clearing up 6 tops of pole make 2 inner walls of friction crucible about clearing up 6, effectively clear up 2 inner walls of crucible's adnexed dross, play and prevent that the dross from piling up, 2 walls of attenuate crucible, improve heat conduction efficiency, prevent the effect of electric energy waste, the dross that drops simultaneously is played by 3 nets of hourglass net, the bottom of having avoided the dross to drop crucible 2 causes the foundry goods impure.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.