Black liquid metal forging and pressing truss type production system and production process

Abstract

The invention relates to improvement of a black liquid metal forging and pressing process, in particular to a black liquid metal forging and pressing truss type production system and a production process, and the production mode of a black liquid metal forging and pressing production method is greatly improved by designing a truss type production line on a production line to be matched with a corresponding lifting appliance. Which comprises a spraying station 1 and a first press station 2, and is characterized by further comprising a first carrier 3, a first rail 4, a truss 5, a water tank 6, a second carrier 7, a second rail 8, a lifting appliance 9 and a second press station 10, a traditional mode that a steel chain type lifting appliance is adopted for lifting the lower die is replaced, and the production safety is greatly improved through the design; after the design is adopted, a plurality of steps in the invention are respectively carried out according to the working rhythm, and only one to two workers are needed in each working rhythm, so that the production efficiency is greatly improved while the personnel demand is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to improvement of a black liquid metal forging process, in particular to a black liquid metal forging truss type production system and production process. BACKGROUND

[0002] Black metal generally refers to solid black metal pieces formed through a cooling forming process of molten black liquid metal obtained by smelting black metals such as iron, manganese and chromium in different proportions, and the black metal pieces are hard and have good wear resistance, so they are widely used in many industrial scenes. The existing smelting and forming of black metal mainly adopts a sand casting process, that is, the molten liquid black metal at high temperature is poured into a sand mold cavity for casting and then cooled and formed. However, since the sand casting process can only rely on the natural shrinkage forming of the metal during the phase transition from liquid to solid, without further extrusion forming, it is difficult to improve the organization compactness of the metal. To solve this problem, the applicant improves the smelting and forming process of liquid metal and proposes a forging process of black metal, that is, the molten liquid metal is poured into a mold, and then the metal in the mold is extruded by a large-tonnage press. During the phase transition from liquid to solid, the black metal is extruded by the large-tonnage press, thereby greatly improving the organization compactness of the formed black metal piece and significantly improving the wear resistance of the black metal piece.

[0003] Although such a production method can greatly improve the organization compactness of the metal piece, there are problems in actual production. The preparation work before the large-tonnage extrusion of the liquid metal, the cooling and demolding work after the extrusion, and the like are all manually processed, which leads to low production efficiency. SUMMARY

[0004] Based on the above problems in the prior art, the application provides a black liquid metal forging truss type production system and production process, which greatly improves the production method of the black liquid metal forging production method through the design of the truss type production line on the production line and the corresponding lifting appliance.

[0005] The technical scheme adopted by the application to solve the technical problems is: a black liquid metal forging truss type production system, comprising a spraying station and a press station one, the spraying station being located beside the press station one, further comprising a carrier one, a track one, a truss, a water tank, a carrier two, a track two, a lifting appliance and a press station two.

[0006] The water tank is located between the press station one and the press station two, the tonnage of the press station two is not more than the tonnage of the press station one, the track one is located between the water tank and the press station one, the track two is located between the water tank and the press station two, the carrier one is arranged on the track one and reciprocates between the press station one and the water tank, the carrier two is arranged on the track two and reciprocates between the press station two and the water tank, and the truss is located between the press station one and the press station two, and the track one, the track two and the water tank are located in the projection area of the truss.

[0007] The press station one comprises a hydraulic cylinder one and an upper die, the cylinder body of the hydraulic cylinder one is located above the press station one, and the upper die is connected with the telescopic end of the hydraulic cylinder one and keeps reciprocating up and down.

[0008] The press station two comprises a hydraulic cylinder two and a top rod, the cylinder body of the hydraulic cylinder two is located above the press station two, and the top rod is connected with the telescopic end of the hydraulic cylinder two and keeps reciprocating up and down.

[0009] The lifting appliance comprises an upper support, a lower support, a clamping arm and a clamp, the upper support is in sliding fit with the truss, the lower support is in sliding fit with the upper support in the vertical direction, the clamping arm is two and is located on the two sides of the lower support respectively, the clamping arm is in sliding fit with the lower support in the horizontal direction, the lower side of each clamping arm is provided with a clamp, the clamp is in rotary fit with the clamping arm, and at least two symmetrical clamping jaws are arranged on each clamping arm.

[0010] Preferably, the clamping arm comprises an upper box body and a lower box body, a motor module is arranged in the upper box body, a rotating shaft is arranged in the lower box body, the motor module is linked with the rotating shaft through a chain wheel, and the rotating shaft is further fixedly connected with the clamp through the lower box body.

[0011] Preferably, the upper box body and the lower box body are integrally formed through welding.

[0012] Preferably, the weight of the upper box body containing the motor module is not less than the weight of the lower box body containing the rotating shaft and the clamping jaw.

[0013] The technical scheme adopted by the present application to solve the technical problem is a black liquid metal forging truss type production method, comprising the following steps:

[0014] Step one, high-temperature resistant paint is sprayed on the inner wall of the cavity of the lower die in the spraying station, the lower die is placed on the fixed seat, and then the fixed seat with the lower die is placed on the carrier one by the lifting appliance and kept with the cavity upward;

[0015] Step two, the carrier one moves to the side of the track one, i.e. beside the smelting furnace, the black liquid metal is poured into the die from the smelting furnace, and then the carrier one moves to the lower side of the hydraulic cylinder one of the press station one through the track one;

[0016] Step three, when the liquid transformation solid state critical line is at the ferrous metal, the hydraulic cylinder one of the press station one drives the upper mold to press down, so that the upper mold is pressed into the lower mold and moves to the designated position;

[0017] Step four, after the ferrous liquid metal in the lower mold is solidified, the upper mold of the press station one is lifted to the designated position, so that the upper mold is separated from the lower mold;

[0018] Step five, the carrier one moves the fixed seat with the lower mold to the other side of the track one, i.e. below the truss, the upper support of the lifting tool moves on the truss until the lower support is above the lower mold,

[0019] Step six, the lower support moves downward relative to the upper support, the two sides of the clamping arm move outward, so that the distance between the two sides of the clamping jaw is greater than the width of the fixed seat; the two sides of the clamping jaw are in the same plane with the fixed seat;

[0020] Step seven, the two sides of the clamping arm move inward, so that the two sides of the clamping jaw are inserted into the fixed seat, and the lower support moves upward to the designated height, and then the upper support moves above the water tank on the truss;

[0021] Step eight, the lower support is lowered to the designated position, so that the lower mold clamped by the clamping jaw is immersed in the water tank for at least 1 minute, and the ferrous liquid metal in the lower mold is always kept immersed below the water surface of the water tank during the 1 minute;

[0022] Step nine, the lower support is raised to the designated height, the upper support moves above the track two on the truss, and the carrier two moves to the designated position on the track two;

[0023] Step ten, the clamping tool is turned over, so that the opening position of the lower mold faces downward, the lower support is lowered until the lower mold is placed on the carrier two, and the two sides of the clamping arm are away from each other, so that the clamping tool is separated from the fixed seat;

[0024] Step eleven, the carrier two carries the lower mold to the press station two, the top rod is driven downward by the hydraulic cylinder two, so that the top rod passes through the fixed seat to eject the lower mold with the ferrous metal part;

[0025] Step twelve, the fixed seat and the lower mold on the carrier two are lifted by the lifting tool to the spraying station to repeat the above steps one to ten again.

[0026] As preferred, step one is working rhythm one, steps two to forty are working rhythm two, steps five to ten are working rhythm three, and steps eleven to twelve are working rhythm four;

[0027] Working rhythm one, working rhythm two, working rhythm three and working rhythm four are independent of each other.

[0028] The beneficial effects of the present application are:

[0029] 1. Due to the heavy weight of the lower mold with ferrous metal parts, the present application realizes the transfer of the lower mold with ferrous metal parts by the truss feeding mode, instead of the traditional steel chain type lifting appliance for hoisting the lower mold, which greatly improves the safety of production;

[0030] 2. The traditional steel chain type lifting appliance needs more operators to operate from the side. In the whole black liquid metal forging and pressing production, the pressing and casting link of the press machine consumes less time. Due to the limited personnel, most of the time is concentrated in the later stage of hoisting, transferring and demolding of the lower mold. After adopting the design of the present application, multiple steps in the application are carried out according to the working rhythm, and only one or two workers are needed in each working rhythm, thereby reducing the personnel demand and greatly improving the production efficiency;

[0031] 3. The special lifting appliance is designed to realize the three-axis movement of the clamp, i.e. up-down movement, left-right movement and rotary movement, thereby realizing the clamping, loosening, rising, falling and overturning actions of the lower mold, thereby greatly improving the safety and automation of production.

[0032] 4. Although the V method casting process also adopts a truss type production system, the effect achieved is completely different from the present application. The truss type production system of the present application can realize multiple working rhythms at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic view of the present application;

[0034] Figure 2 is a structural schematic view of part of the press machine station of the present application;

[0035] Figure 3 is a structural schematic view of part of the press machine station of the present application;

[0036] Figure 4 is a structural schematic view of the lifting appliance of the present application;

[0037] Figure 5 is a structural schematic view of the inside of the clamp arm of the present application.

[0038] In the figure: 1, spraying station; 2, press machine station one; 21, hydraulic cylinder one; 22, upper mold; 3, carrier one; 4, track one; 5, truss; 6, water tank; 7, carrier two; 8, track two; 9, lifting appliance; 91, upper support; 92, lower support; 93, clamp arm; 94, clamp; 95, upper box body; 96, lower box body; 97, motor module; 98, chain wheel; 99, rotating shaft; 910, clamping jaw; 10, press machine station two; 101, hydraulic cylinder two; 102, ejector rod. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings of the embodiments of the present application:

[0040] The black liquid metal forging truss production system comprises a spraying station 1 and a press station 1 2, the spraying station 1 is located beside the press station 1 2, the spraying station 1 mainly adopts manual cleaning and spraying high-temperature resistant paint on the cavity of the lower mold, further comprises a carrier 1 3, a track 1 4, a truss 5, a water tank 6, a carrier 2 7, a track 2 8, a lifting appliance 9 and a press station 2 10; the press station 1 2 adopts a large-tonnage press embedded in the ground, the track 1 4 can penetrate the extrusion position of the large-tonnage press, the water tank 6 is located between the press station 1 2 and the press station 2 10, the purpose of the water tank 6 is mainly to cool the black liquid metal part that has been solidified in the lower mold, so as to facilitate the separation between the black metal part and the lower mold, the tonnage of the press station 2 10 does not exceed that of the press station 1 2, the purpose of the press station 1 2 is to provide pressure during the solidification process of the liquid black metal, the press station 2 10 is used to eject the solid black metal workpiece in the lower mold of the fixed seat through the ejector rod 1 02, the fixed seat is provided with a plurality of through holes for the ejector rod to pass through, the track 1 4 is located between the water tank 6 and the press station 1 2, the track 2 8 is located between the water tank 6 and the press station 2 10, the carrier 1 3 is arranged on the track 1 4 and reciprocates between the press station 1 2 and the water tank 6, the carrier 2 7 is arranged on the track 2 8 and reciprocates between the press station 2 10 and the water tank 6, the truss 5 is located between the press station 1 2 and the press station 2 10, the track 1 4, the track 2 8 and the water tank 6 are located in the projection area of the truss 5; the walking track of the lifting appliance 9 can pass through the track 1 4, the track 2 8 and the water tank 6.

[0041] The press station 1 2 comprises a hydraulic cylinder 1 21 and an upper mold 22, the cylinder body of the hydraulic cylinder 1 21 is located above the press station 1 2, the upper mold 23 is connected with the telescopic end of the hydraulic cylinder 1 21 and keeps reciprocating upward and downward; after the spraying station 1 1 completes the spraying of the cavity of the lower mold, the fixed seat together with the lower mold can be hoisted to the carrier 1 3 by the lifting appliance, and the fixed seat is sent to the lower side of the upper mold 22 of the press station 2 by the carrier 1 3;

[0042] The press station 2 10 comprises a hydraulic cylinder 2 1 1 and an ejector rod 1 2, the cylinder body of the hydraulic cylinder 2 1 1 is located above the press station 2 10, the ejector rod 1 2 is connected with the telescopic end of the hydraulic cylinder 2 1 1 and keeps reciprocating upward and downward;

[0043] The lifting appliance 9 comprises an upper support 91, a lower support 92, a clamping arm 93 and a clamp 94, the upper support 91 is in sliding fit with the truss 5, the upper support 91 can move on the truss 5 like a truss trolley, the lower support 92 is in sliding fit with the upper support 91 in the vertical direction, the clamping arm 93 is two and is respectively located at two sides of the lower support 92, the clamping arm 93 is in sliding fit with the lower support 92 in the horizontal direction, the lower of each clamping arm 93 is provided with the clamp 94, the clamp 94 is in rotary fit with the clamping arm 93, and at least two symmetrical clamping jaws 910 are arranged on each clamping arm 93.

[0044] The clamping arm 93 comprises an upper box body 95 and a lower box body 96, the upper box body 95 mainly plays a fixing role and is generally assembled by thick steel material, the motor module 97 is installed in the upper box body 95, the rotating shaft 99 is installed in the lower box body 96, the motor module 97 is linked with the rotating shaft 99 through the chain wheel 98, and the rotating shaft 99 is further fixedly connected with the clamp 94 by penetrating through the lower box body 96.

[0045] The upper box body 95 and the lower box body 96 are integrally formed by welding.

[0046] The weight of the upper box body 95 containing the motor module 97 is not less than the weight of the lower box body 96 containing the rotating shaft 99 and the clamping jaw 910. Such a design can effectively guarantee the stability and connection rigidity of the clamping arm 93 during movement. Since the lower mold with ferrous metal parts is heavy, the strength of the clamping arm 93 must be guaranteed.

[0047] In specific production, the following steps are adopted. Step one, after spraying high-temperature resistant paint in the cavity of the lower mold in the spraying station 1, the lower mold is placed on the fixing seat, and then the fixing seat with the lower mold is placed on the carrier one 3 by the lifting appliance, and the cavity faces upward;

[0048] Step two, the carrier one 3 moves to one side of the track one 4, that is, beside the smelting furnace, the ferrous liquid metal is poured into the mold from the smelting furnace, and then the carrier one 3 moves to below the hydraulic cylinder one 21 of the press station one 2 through the track one 4;

[0049] Step three, when the ferrous metal is at the liquid-solid transformation critical line, the hydraulic cylinder one 21 of the press station one 2 drives the upper mold 22 to press downward, so that the upper mold 22 is pressed into the lower mold and moves to the specified position;

[0050] Step four, after the ferrous liquid metal in the lower mold solidifies, the upper mold 22 of the press station one 2 is lifted to the specified position, so that the upper mold 22 is separated from the lower mold;

[0051] Step five, the carrier one 3 moves the fixing seat with the lower mold to the other side of the track one, that is, below the truss 5, the upper support 91 of the lifting appliance 9 moves on the truss 5 until the lower support 92 is above the lower mold,

[0052] Step six, the lower support 92 moves downward relative to the upper support 91, the two side clamping arms 93 move outward to a distance greater than the width of the fixed seat, and the two side clamping jaws 910 are in the same plane as the fixed seat;

[0053] Step seven, the two side clamping arms 93 move inward, the two side clamping jaws 910 are inserted into the fixed seat, and the lower support 92 moves upward to a specified height, and then the upper support 91 moves above the water tank 6 on the truss 5;

[0054] Step eight, the lower support 92 is lowered to a specified position so that the lower mold clamped by the clamping jaw 910 is immersed in the water tank 6 for at least 1 minute, and the black liquid metal in the lower mold is always kept immersed below the water surface of the water tank 6 during the 1 minute;

[0055] Step nine, the lower support 92 is raised to a specified height, the upper support 91 is moved above the track two 8 on the truss 5, and the carrier two 7 is moved to a specified position on the track two 8;

[0056] Step ten, the clamp 94 is turned over so that the opening position of the lower mold faces downward, the lower support 92 is lowered until the lower mold is placed on the carrier two 7, and the two side clamping arms 93 move away from each other so that the clamp 94 is separated from the fixed seat;

[0057] Step eleven, the carrier two 7 carries the lower mold to the press station two 10, the ejector rod 12 is driven downward by the hydraulic cylinder two 11, the ejector rod passes through the fixed seat to eject the lower mold with the black metal part;

[0058] Step twelve, the fixed seat and the lower mold on the carrier two 7 are lifted by the lifting tool to the spraying station 1 and the above steps one to ten are repeated again.

[0059] Step one is working rhythm one, steps two to forty are working rhythm two, steps five to ten are working rhythm three, and steps eleven to twelve are working rhythm four;

[0060] Working rhythm one, working rhythm two, working rhythm three, and working rhythm four are independent of each other.

[0061] The existing black liquid metal forging process of the applicant is that the lower die is sprayed with high-temperature resistant paint, then the liquid black metal is poured into the lower die, sent to the lower part of the large-tonnage press, the upper die is driven to move down by the press, so that the black metal is cooled and formed in the process of being subjected to great extrusion during the transition from liquid phase to solid phase, after the upper die is driven to move up and leave the lower die, the solid-phase black metal in the lower die is still at high temperature, i.e. the red-hot solid-state black metal, at this time, how to complete the heat treatment and demolding for the lower die is a great difficulty, the fundamental reason is that the weight of the solid-phase black metal at high temperature is extremely heavy and the temperature is extremely high, and there is no standardized equipment that can directly perform automatic operation on it at present.

[0062] At present, in view of this difficulty, the applicant is through manual welding or injection of a plurality of hanging rods on the side of the lower die, when the black metal in the lower die completes die casting, the lower die is sent out of the forming station of the press, then the hook is hung on the lug by manual operation, and the mold with the formed black metal is sent to the water tank by the crane for cooling, then the lower die after cooling is sent to the specified position by hoisting, the lower die is turned over so that the black metal faces the ground, the bottom of the lower die is hammered and knocked by manual operation, since there is a gap between the cooled black metal and the lower die, the formed black metal is demolded by vibration of the lower die.

[0063] As can be seen from the above, a large amount of time and many operators are needed in the above production process to demold the black metal after forging and forming, which not only wastes manpower and material resources but also has very low production efficiency; after the design of the present application, the working rhythms one, two, three and four can be independently carried out, thereby greatly improving the production efficiency and without the need for too many personnel to perform manual operation, and secondly, the safety of production can be greatly improved.

[0064] The above embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

Claims

1. A black liquid metal forging truss production system, comprising a spraying station (1) and a press station (2), wherein the spraying station (1) is located next to the press station (2), characterized in that, It also includes vehicle one (3), track one (4), truss (5), water tank (6), vehicle two (7), track two (8), hoist (9) and press station two (10); The water tank (6) is located between press station 1 (2) and press station 2 (10). The tonnage of press station 2 (10) does not exceed the tonnage of press station 1 (2). Track 1 (4) is located between the water tank (6) and press station 1 (2). Track 2 (8) is located between the water tank (6) and press station 2 (10). Carrier 1 (3) is set on track 1 (4) and moves back and forth between press station 1 (2) and water tank (6). Carrier 2 (7) is set on track 2 (8) and moves back and forth between press station 2 (10) and water tank (6). Truss (5) is located between press station 1 (2) and press station 2 (10). Track 1 (4), track 2 (8) and water tank (6) are located within the projection area of ​​truss (5). The press station 1 (2) includes a hydraulic cylinder 1 (21) and an upper mold (22). The cylinder body of the hydraulic cylinder 1 (21) is located above the press station 1 (2). The upper mold (23) is connected to the telescopic end of the hydraulic cylinder 1 (21) and maintains up-and-down reciprocating motion. The press station 2 (10) includes a hydraulic cylinder 2 (11) and a push rod (12). The cylinder body of the hydraulic cylinder 2 (11) is located above the press station 2 (10). The push rod (12) is connected to the telescopic end of the hydraulic cylinder 2 (11) and maintains up-and-down reciprocating motion. The lifting device (9) includes an upper support (91), a lower support (92), a clamping arm (93), and a clamp (94). The upper support (91) is slidably engaged with the truss (5), and the lower support (92) is slidably engaged with the upper support (91) in the vertical direction. There are two clamping arms (93) located on both sides of the lower support (92). The clamping arms (93) are slidably engaged with the lower support (92) in the horizontal direction. A clamp (94) is provided below each clamping arm (93). The clamp (94) is rotatably engaged with the clamping arm (93). Each clamping arm (93) is provided with at least two symmetrically distributed jaws (910).

2. The gantry-type production system for forging black liquid metal as described in claim 1, characterized in that, The clamping arm (93) includes an upper housing (95) and a lower housing (96). The motor module (97) is installed in the upper housing (95), and the rotating shaft (99) is installed in the lower housing (96). The motor module (97) is linked to the rotating shaft (99) through a sprocket (98). The rotating shaft (99) also passes through the lower housing (96) and is fixedly connected to the clamp (94).

3. The gantry-type production system for forging black liquid metal as described in claim 2, characterized in that, The upper box (95) and the lower box (96) are welded together to form an integral structure.

4. The gantry-type production system for forging black liquid metal as described in claim 3, characterized in that, The counterweight of the upper housing (95) containing the motor module (97) is not less than the counterweight of the lower housing (96) containing the shaft (99) and the gripper (910).

5. The black liquid metal forging truss production method as described in claim 1, characterized in that, Includes the following steps: Step 1: After spraying the high-temperature resistant coating on the inner wall of the cavity of the lower mold in the spraying station (1), place the lower mold on the fixed seat, and then place the fixed seat with the lower mold on the carrier (3) with the hoist and keep the cavity facing upward. Step 2: The carrier (3) moves to one side of the track (4), which is next to the smelting furnace. The molten black metal is poured into the mold by the smelting furnace. Then the carrier (3) moves through the track (4) to the hydraulic cylinder (21) below the press station (2). Step 3: When the ferrous metal is at the critical line of liquid to solid conversion, control the hydraulic cylinder 1 (21) of press station 1 (2) to drive the upper mold (22) to press down, so that the upper mold (22) is pressed into the lower mold and moves to the designated position; Step 4: After the black liquid metal in the lower mold solidifies, the upper mold (22) of press station 1 (2) is raised to the designated position, so that the upper mold (22) is separated from the lower mold; Step 5: The carrier (3) moves the fixed seat with the lower mold to the other side of the track, that is, below the truss (5). The upper support (91) of the lifting device (9) moves on the truss (5) until the lower support (92) is above the lower mold. Step 6: The lower support (92) moves downward relative to the upper support (91), and the clamping arms (93) on both sides of the lower support (92) move outward, so that the distance between the clamping jaws (910) on both sides is greater than the width of the fixed seat; the clamping jaws (910) on both sides are in the same plane as the fixed seat; Step 7: The clamping arms (93) on both sides of the lower support (92) move inward so that the clamping claws (910) on both sides are inserted into the fixed seat. After the lower support (92) moves upward to the specified height, the upper support (91) moves on the truss (5) to the top of the water tank (6). Step 8: The lower support (92) is lowered to the designated position so that the lower mold held by the jaws (910) is immersed in the water tank (6) for at least 1 minute, and the black liquid metal in the lower mold is kept completely submerged below the water surface of the water tank (6) during this 1 minute. Step 9: The lower support (92) rises to raise the lower mold to the specified height, the upper support (91) moves on the truss (5) to above the second track (8), and the second carrier (7) moves on the second track (8) to the specified position. Step 10: The clamp (94) is flipped so that the opening of the lower mold faces downward. The lower support (92) is lowered until the lower mold is placed on the carrier (7). The clamping arms (93) on both sides move away from each other, so that the clamp (94) is removed from the fixed seat. Step 11: Carrier 2 (7) carries the lower mold to press station 2 (10), and hydraulic cylinder 2 (11) drives the push rod (12) to move downward, so that the push rod (12) passes through the fixed seat and pushes out the lower mold with black metal parts. Step 12: Use a hoist to lift the fixed seat and lower mold on carrier 2 (7) to the spraying station (1) and repeat steps 1 to 10 above.

6. The black liquid metal forging truss production method as described in claim 5, characterized in that, Step 1 is work rhythm one; Steps 2 to 40 are work rhythm two; Steps 5 to 10 are work rhythm three; Steps 11 to 12 are work rhythm four. Work rhythm one, work rhythm two, work rhythm three and work rhythm four are carried out independently of each other.

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