Workpiece casting method capable of achieving rapid demolding

Abstract

The invention discloses a workpiece casting method capable of achieving rapid demolding, and relates to the technical field of metal casting. After the casting cavity is formed among the static mold, the movable mold and the two mold splitting plates, the molten metal in the hot melting liquid state is poured into the casting cavity through the pouring gate in the movable mold, then the mold splitting plates are separated from the static mold and the movable mold through the direct drive mechanism, and then air is blown into the gap between the static mold and the movable mold through the air blowing mechanism; the first lifting mechanism drives the movable mold to be away from the static mold, the metal workpiece in the casting cavity is separated from the movable mold, then the adsorption mechanism pulls the metal workpiece on the movable mold and the static mold upwards, meanwhile, the pneumatic mechanism fills air into a gap between the static mold and the metal workpiece, and therefore the metal workpiece is rapidly separated from the static mold. The demolding device is reasonable in structural design and convenient to use, the demolding efficiency during workpiece casting is effectively improved, and meanwhile the casting quality of workpieces is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of metal casting, and particularly relates to a workpiece casting method with rapid demolding. Background Art

[0002] The casting process of a workpiece is to inject metal or other materials in a molten state into a casting mold. After cooling and solidifying, the required-shaped parts or products can be obtained.

[0003] In the prior art, after the workpiece cools and solidifies in the casting mold, a thimble mechanism is usually used to push the workpiece out of the cavity of the casting mold. However, since the workpiece may adhere to the inner wall of the cavity, this not only makes it difficult to push the workpiece out of the cavity of the casting mold, but also easily causes speckle defects on the surface of the workpiece during the demolding process. Therefore, it is urgent to study a workpiece casting method with rapid demolding to solve the above problems. Summary of the Invention

[0004] The present invention aims to provide a workpiece casting method with rapid demolding, and its purpose is to solve the technical problems raised in the above background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a workpiece casting method with rapid demolding, including the following steps:

[0007] Step 1: First, drive a pair of split templates to approach the stationary mold simultaneously through a direct drive mechanism, so that the lower surface of the split template is in contact with the upper surface of the stationary mold; then drive the moving mold to approach the stationary mold through a first lifting mechanism, so that the lower surface of the moving mold is combined with the upper surface of the split template, and a casting chamber is formed between the stationary mold, the moving mold and the two split templates;

[0008] Step 2: Pour molten metal in a hot melt liquid state into the casting chamber through the gate on the moving mold; after the metal liquid in the casting chamber cools and solidifies, drive the two split templates to move away from each other through the direct drive mechanism, so that the split templates are separated from the stationary mold and the moving mold;

[0009] Step 3: First, drive the air blowing mechanism to move downward between the stationary mold and the moving mold through a second lifting mechanism, then blow air into the gap between the stationary mold and the moving mold through the air blowing mechanism, and then drive the moving mold to move away from the stationary mold through the first lifting mechanism, so that the metal workpiece in the casting chamber is separated from the moving mold;

[0010] Step 4: First, drive the adsorption mechanism to move horizontally between the stationary mold and the moving mold through the push-pull mechanism on the second lifting mechanism, and then drive the adsorption mechanism to move downward through the third lifting mechanism via the push-pull mechanism, so that the adsorption mechanism adsorbs the metal workpiece on the stationary mold;

[0011] Step Five: Push the metal workpiece on the stationary mold upward through the ejector pin mechanism, and drive the adsorption mechanism to move upward through the third lifting mechanism via the push-pull mechanism, so as to realize that the adsorption mechanism pulls the metal workpiece on the stationary mold upward. Meanwhile, fill air into the gap between the stationary mold and the metal workpiece through the pneumatic mechanism, thereby realizing the rapid detachment of the metal workpiece from the stationary mold.

[0012] As a preferred technical solution of the present invention, the direct drive mechanism includes a horizontally arranged support plate; the stationary mold is fixed on the upper surface of the support plate; a pair of mounting columns are vertically fixed side by side on the upper surface of the support plate; on the opposite outer sides of the two mounting columns, first cylinders are horizontally fixed; the output ends of the two first cylinders respectively slide through the two mounting columns and extend between the two mounting columns, and the two split templates are respectively horizontally fixed on the output ends of the two first cylinders; the lower surfaces of the two split templates can be slidably attached to the upper surface of the stationary mold.

[0013] As a preferred technical solution of the present invention, the two split templates are both of U-shaped structure; convex blocks are arranged on the opposite side edges of the upper surface of the stationary mold; a forming cavity is formed on the upper surface of the stationary mold, and the forming cavity is arranged between the two convex blocks; the first lifting mechanism includes a bearing plate horizontally fixed on the upper ends of the two mounting columns; a pair of second cylinders are vertically fixed side by side on the upper surface of the bearing plate; the output ends of the two second cylinders respectively slide through the bearing plate and are fixed on the top wall of the moving mold; when the two ends of each split template respectively abut against the two convex blocks and the lower surface of the moving mold is attached to the upper surfaces of the two split templates, the space enclosed between the two split templates and the forming cavity together form the casting cavity.

[0014] As a preferred technical solution of the present invention, the second lifting mechanism includes a pair of third cylinders vertically fixed side by side on the upper surface of the bearing plate; the output ends of the two third cylinders respectively slide through the bearing plate and are connected through a sealing box; through holes are formed in the top wall and the bottom wall of the sealing box; the stationary mold can slidably penetrate through one through hole, and the moving mold can slidably penetrate through the other through hole.

[0015] As a preferred technical solution of the present invention, the air blowing mechanism includes a pair of air blowing pipes horizontally arranged inside the lower part of the sealing box; the length directions of the two air blowing pipes are perpendicular to the telescopic direction of the output end of the first cylinder; one ends of the two air blowing pipes are fixed on one side wall of the sealing box, and the other ends of the two air blowing pipes respectively penetrate through the other side wall of the sealing box and are fixed on an air supply pipe; a plurality of air nozzles are horizontally fixed on the two air blowing pipes along the axial direction; the plurality of air nozzles are arranged between the two air blowing pipes; when the two split templates are separated from the stationary mold and the stationary mold is arranged in one through hole, the plurality of air nozzles are all located between the stationary mold and the moving mold.

[0016] As a preferred technical solution of the present invention, the third lifting mechanism includes a pair of fifth cylinders vertically and fixedly arranged side by side on the top wall of the sealed box; the output ends of the two fifth cylinders both slide through the top wall of the sealed box; the pushing and pulling mechanism includes a pair of positioning strip plates horizontally fixed on the output ends of the two fifth cylinders; the length directions of the two positioning strip plates are both arranged parallel to the telescopic direction of the output end of the first cylinder; the ends of the two positioning strip plates are connected by a pair of guide rods; a pair of fourth cylinders are horizontally arranged between the two guide rods; the tail ends of the two fourth cylinders are respectively rotatably connected to the two positioning strip plates; the output ends of the two fourth cylinders are both horizontally and rotatably connected with movable strip plates, and both ends of each movable strip plate are respectively slidably connected to the two guide rods.

[0017] As a preferred technical solution of the present invention, the adsorption mechanism includes a plurality of rotating shafts respectively vertically and rotatably connected to the lower surfaces of the two movable strip plates; the lower ends of the plurality of rotating shafts are all horizontally fixed with strip boxes, and the strip boxes arranged on the same movable strip plate are connected by an air extraction pipe; the lower surfaces of each strip box are vertically and fixedly arranged side by side with a plurality of suction nozzles; the upper surfaces of the plurality of strip boxes are all vertically fixed with torsion springs; the plurality of torsion springs are respectively sleeved on the plurality of rotating shafts, and the upper end of each torsion spring is fixed to the adjacent movable strip plate.

[0018] As a preferred technical solution of the present invention, a receiving chamber is formed in the static mold; the receiving chamber is arranged below the forming chamber; a plurality of ventilation holes are arranged side by side on the top wall of the receiving chamber; a plurality of tapered holes corresponding to the ventilation holes are arranged side by side on the bottom surface of the forming chamber; the lower ends of the plurality of tapered holes are respectively communicated with the upper ends of the plurality of ventilation holes; the ejector pin mechanism includes a pair of sixth cylinders vertically fixed on the lower surface of the support plate; the output ends of the two sixth cylinders sequentially penetrate through the support plate and the static mold and extend into the receiving chamber, and an installation plate is connected between the output ends of the two sixth cylinders; a plurality of ejector pins are vertically and fixedly arranged side by side on the upper surface of the installation plate; the plurality of ejector pins are respectively inserted into the plurality of ventilation holes, and the ejector pins are in clearance fit with the ventilation holes; the upper ends of the plurality of ejector pins all have frustum-shaped portions corresponding to the tapered holes; the tapered side surfaces of the frustum-shaped portions can be attached to the inner walls of the tapered holes.

[0019] As a preferred technical solution of the present invention, the pneumatic mechanism includes a pair of seventh cylinders vertically fixed on the lower surface of the support plate; the output ends of the two seventh cylinders sequentially penetrate through the support plate and the stationary mold and extend into the accommodating chamber, and the output ends of the two seventh cylinders are connected by a push plate; the push plate is arranged below the mounting plate, and the output ends of the two sixth cylinders are both slidably inserted through the push plate; when the frustum part moves upward and a gap is generated between it and the conical hole, the seventh cylinder drives the push plate to move upward to push the air in the accommodating chamber through the ventilation hole and the conical hole into the forming chamber.

[0020] The present invention has the following beneficial effects:

[0021] After forming a casting chamber between the stationary mold, the moving mold and the two split templates in the present invention, molten metal in a hot melt liquid state is poured into the casting chamber through the gate on the moving mold. After the metal liquid cools and solidifies, the split template is separated from the stationary mold and the moving mold through the direct drive mechanism. Then, the blowing mechanism blows air into the gap between the stationary mold and the moving mold, and the first lifting mechanism drives the moving mold away from the stationary mold to separate the metal workpiece in the casting chamber from the moving mold. Then, the adsorption mechanism pulls up the metal workpiece on the stationary mold, and at the same time, the pneumatic mechanism fills the gap between the stationary mold and the metal workpiece with air, so as to realize the rapid detachment of the metal workpiece from the stationary mold, which not only effectively improves the demolding efficiency during workpiece casting, but also ensures the casting quality of the workpiece, and has high market application value.

[0022] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of the connection between the direct drive mechanism, the stationary mold, the first lifting mechanism and the second lifting mechanism of the present invention.

[0025] Figure 2 It is Figure 1 the front view of the structure.

[0026] Figure 3 It is a schematic diagram of the relative positions between the direct drive mechanism, the split template, the stationary mold, the first lifting mechanism and the moving mold of the present invention.

[0027] Figure 4Schematic diagram of the connection structure between the direct drive mechanism, sub-template and stationary mold of the present invention.

[0028] Figure 5 Schematic diagram of the relative positions between the stationary mold, moving mold, second lifting mechanism and pushing and pulling mechanism of the present invention.

[0029] Figure 6 Schematic diagram of the connection structure between the second lifting mechanism and the air blowing mechanism of the present invention.

[0030] Figure 7 Schematic diagram of the connection structure between the pushing and pulling mechanism and the adsorption mechanism of the present invention.

[0031] Figure 8 Schematic diagram of the structure of the adsorption mechanism of the present invention.

[0032] Figure 9 Schematic diagram of the structure after the pushing and pulling mechanism drives the adsorption mechanism to unfold of the present invention.

[0033] Figure 10 Schematic diagram of the structure after the pushing and pulling mechanism drives the adsorption mechanism to fold of the present invention.

[0034] Figure 11 Schematic diagram of the structure where the ejector pin mechanism and the pneumatic mechanism are arranged on the stationary mold of the present invention.

[0035] Figure 12 Schematic diagram of the structure of the ejector pin mechanism of the present invention.

[0036] In the drawings, the list of components represented by each reference numeral is as follows:

[0037] 1 - direct drive mechanism, 2 - sub-template, 3 - stationary mold, 4 - first lifting mechanism, 5 - moving mold, 6 - second lifting mechanism, 7 - air blowing mechanism, 8 - pushing and pulling mechanism, 9 - adsorption mechanism, 10 - third lifting mechanism, 11 - ejector pin mechanism, 12 - pneumatic mechanism, 101 - support plate, 102 - mounting post, 103 - first cylinder, 104 - transmission block, 301 - convex block, 302 - molding cavity, 303 - accommodating cavity, 304 - ventilation hole, 305 - tapered hole, 401 - bearing plate, 402 - second cylinder, 601 - third cylinder, 602 - sealing box, 603 - accommodating opening, 701 - air blowing pipe, 702 - supply pipe, 703 - air blowing nozzle, 801 - positioning strip, 802 - guide rod, 803 - fourth cylinder, 804 - movable strip, 901 - rotating shaft, 902 - strip box, 903 - suction pipe, 904 - suction nozzle, 905 - torsion spring, 1001 - fifth cylinder, 1101 - sixth cylinder, 1102 - mounting plate, 1103 - ejector pin, 1104 - frustum portion, 1201 - seventh cylinder, 1202 - push plate. Detailed implementation manners

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] The present invention is a method for casting workpieces with rapid demolding, including the following steps:

[0041] Step 1: First, drive a pair of split templates 2 to approach the static mold 3 simultaneously through the direct drive mechanism 1, so that the lower surface of the split template 2 is in contact with the upper surface of the static mold 3; then drive the moving mold 5 to approach the static mold 3 through the first lifting mechanism 4, so that the lower surface of the moving mold 5 is combined with the upper surface of the split template 2, and a casting chamber is formed between the static mold 3, the moving mold 5 and the two split templates 2.

[0042] Step 2: Pour molten metal in a hot melt liquid state into the casting chamber through the gate on the moving mold 5; after the metal liquid in the casting chamber cools and solidifies, drive the two split templates 2 to move away from each other through the direct drive mechanism 1, so that the split templates 2 are separated from the static mold 3 and the moving mold 5.

[0043] Step 3: First, drive the air blowing mechanism 7 to move downward between the static mold 3 and the moving mold 5 through the second lifting mechanism 6, then blow air into the gap between the static mold 3 and the moving mold 5 through the air blowing mechanism 7, and then drive the moving mold 5 to move away from the static mold 3 through the first lifting mechanism 4, so that the metal workpiece in the casting chamber is separated from the moving mold 5.

[0044] Step 4: First, drive the adsorption mechanism 9 to move horizontally between the static mold 3 and the moving mold 5 through the push-pull mechanism 8 on the second lifting mechanism 6, and then drive the adsorption mechanism 9 to move downward through the third lifting mechanism 10 via the push-pull mechanism 8, so that the adsorption mechanism 9 adsorbs the metal workpiece on the static mold 3.

[0045] Step 5: Push the metal workpiece on the static mold 3 upward through the ejector pin mechanism 11, and drive the adsorption mechanism 9 to move upward through the third lifting mechanism 10 via the push-pull mechanism 8, so that the adsorption mechanism 9 pulls the metal workpiece on the static mold 3 upward. At the same time, inject air into the gap between the static mold 3 and the metal workpiece through the pneumatic mechanism 12, so as to realize the rapid separation of the metal workpiece from the static mold 3.

[0046] Embodiment 2:

[0047] On the basis of Embodiment 1, as Figures 1-5As shown in the figure, the direct drive mechanism 1 includes a horizontally arranged support plate 101; the stationary mold 3 is bolted to the upper surface of the support plate 101; a pair of mounting columns 102 are vertically bolted side by side on the upper surface of the support plate 101; the first cylinders 103 are horizontally bolted to the opposite outer sides of the two mounting columns 102; the output ends of the two first cylinders 103 respectively slide through the two mounting columns 102 and extend between the two mounting columns 102, and the two split molds 2 are horizontally bolted to the output ends of the two first cylinders 103 respectively; the lower surfaces of the two split molds 2 can slide and fit with the upper surface of the stationary mold 3; the two split molds 2 are both of U-shaped structures; the convex blocks 301 are integrally formed on the opposite side edges of the upper surface of the stationary mold 3; a molding cavity 302 is formed on the upper surface of the stationary mold 3, and the molding cavity 302 is arranged between the two convex blocks 301; the first lifting mechanism 4 includes a bearing plate 401 horizontally bolted to the upper ends of the two mounting columns 102; a pair of second cylinders 402 are vertically bolted side by side on the upper surface of the bearing plate 401; the output ends of the two second cylinders 402 respectively slide through the bearing plate 401 and are bolted to the top wall of the moving mold 5; when the two ends of each split mold 2 respectively abut against the two convex blocks 301 and the lower surface of the moving mold 5 fits with the upper surfaces of the two split molds 2, the space enclosed between the two split molds 2 and the molding cavity 302 together form a casting cavity. During use, the two first cylinders 103 drive the two split molds 2 to move closer, and the two ends of the split mold 2 respectively abut against the two convex blocks 301, and then the second cylinder 402 drives the moving mold 5 to move downward, and the lower surface of the moving mold 5 fits with the upper surfaces of the two split molds 2, so that the space enclosed between the two split molds 2 and the molding cavity 302 together form a casting cavity, and then the molten metal in a hot melt liquid state is poured into the casting cavity through the gate on the moving mold 5. After the molten metal in the casting cavity cools and solidifies, the two first cylinders 103 drive the two split molds 2 to move away from each other, so that the split molds 2 are separated from the stationary mold 3 and the moving mold 5, and the edge of the metal workpiece is exposed, which is convenient for blowing air into the gap between the stationary mold 3 and the moving mold 5 later to accelerate the separation of the metal workpiece from the stationary mold 3 or the moving mold 5.

[0048] Embodiment 3:

[0049] Based on Embodiment 2, as Figures 1-2 and Figures 5-6As shown in the figure, the second lifting mechanism 6 includes a pair of third cylinders 601 vertically bolted side by side on the upper surface of the bearing plate 401; the output ends of the two third cylinders 601 both slide through the bearing plate 401 and are connected through a sealed box 602; rectangular structure accommodating openings 603 are formed in both the top wall and the bottom wall of the sealed box 602; the stationary mold 3 can slide through one accommodating opening 603, and the movable mold 5 can slide through the other accommodating opening 603; the air blowing mechanism 7 includes a pair of air blowing pipes 701 horizontally arranged inside the lower part of the sealed box 602; the length directions of the two air blowing pipes 701 are both perpendicular to the telescopic direction of the output end of the first cylinder 103; one ends of the two air blowing pipes 701 are bolted to one side wall of the sealed box 602, and the other ends of the two air blowing pipes 701 both penetrate through the other side wall of the sealed box 602 and are fixed to an air supply pipe 702; a plurality of conventional nozzles 703 in the art are horizontally fixed along the axial direction on the two air blowing pipes 701; the plurality of nozzles 703 are arranged between the two air blowing pipes 701; when the two sub-molds 2 are separated from the stationary mold 3 and the stationary mold 3 is arranged in one accommodating opening 603, the plurality of nozzles 703 are all located between the stationary mold 3 and the movable mold 5. During use, when the two sub-molds 2 are separated from the stationary mold 3, the third cylinder 601 drives the sealed box 602 to move downward, prompting the stationary mold 3 to slide through one accommodating opening 603 and the movable mold 5 to slide through the other accommodating opening 603, so that the inside of the sealed box 602 is in a relatively sealed state, and at this time the plurality of nozzles 703 are all located between the stationary mold 3 and the movable mold 5. Then, cold air is conveyed to the two air blowing pipes 701 through the air supply pipe 702, and the air blowing pipes 701 blow the cold air to between the stationary mold 3 and the movable mold 5 through the nozzles 703. Then, the second cylinder 402 drives the movable mold 5 to move upward. Thereby, not only the cooling efficiency of the metal workpiece is further improved, but also the air between the movable mold 5 and the metal workpiece can be filled, accelerating the rapid separation of the metal workpiece in the casting chamber from the movable mold 5, effectively ensuring the demolding efficiency of the metal workpiece.

[0050] Embodiment 4:

[0051] On the basis of Embodiment 3, as Figure 1 , Figure 5 and Figures 7-10As shown, the third lifting mechanism 10 includes a pair of fifth cylinders 1001 vertically bolted side by side to the top wall of the sealed box 602; the output ends of the two fifth cylinders 1001 both slide through the top wall of the sealed box 602; the pushing and pulling mechanism 8 includes a pair of positioning slats 801 horizontally bolted to the output ends of the two fifth cylinders 1001; the length directions of the two positioning slats 801 are both arranged parallel to the telescopic direction of the output end of the first cylinder 103; the ends of the two positioning slats 801 are connected by a pair of guide rods 802, and the guide rods 802 are bolted to the positioning slats 801; a pair of fourth cylinders 803 are horizontally arranged between the two guide rods 802; the tails of the two fourth cylinders 803 are respectively rotatably connected to the two positioning slats 801; the output ends of the two fourth cylinders 803 are both horizontally rotatably connected with movable slats 804, and the two ends of each movable slat 804 are respectively slidably connected to the two guide rods 802; the adsorption mechanism 9 includes a plurality of rotating shafts 901 respectively vertically rotatably connected to the lower surfaces of the two movable slats 804; the lower ends of the plurality of rotating shafts 901 are all horizontally bolted with strip boxes 902, and the strip boxes 902 arranged on the same movable slat 804 are connected by an air extraction pipe 903; the lower surfaces of each strip box 902 are all vertically fixed with a plurality of conventional suction nozzles 904 in the art side by side; the upper surfaces of the plurality of strip boxes 902 are all vertically welded with torsion springs 905; the plurality of torsion springs 905 are respectively sleeved on the plurality of rotating shafts 901, and the upper end of each torsion spring 905 is welded to the adjacent movable slat 804.During use, after the stationary mold 3 is separated from the moving mold 5, the output end of the fourth cylinder 803 extends out to make the two movable slats 804 slide on the guide rods 802, and make the two movable slats 804 move closer to each other. At the same time, the angle between the movable slat 804 and the strip box 902 gradually increases, and the torsion spring 905 also gradually releases the torsion force. When both movable slats 804 move to the forming cavity 302, the angle between the movable slat 804 and the strip box 902 is about 80°-90°, and at this time, multiple strip boxes 902 are all above the forming cavity 302, and the torsion force of the torsion spring 905 is also completely released. Then, the fifth cylinder 1001 drives the positioning slat 801 to move downward, so that the suction nozzle 904 on the strip box 902 abuts against the metal workpiece. Then, the inside of the strip box 902 is evacuated to a negative pressure state through the suction pipe 903, so that the suction nozzle 904 sucks the metal workpiece. Then, while the ejector pin mechanism 11 pushes the metal workpiece on the stationary mold 3 upward, the fifth cylinder 1001 drives the positioning slat 801 to move upward, and the suction nozzle 904 will pull the metal workpiece upward, so as to realize the operation of "pulling and pushing" the metal workpiece, which can accelerate the rapid detachment of the metal workpiece from the stationary mold 3; when the metal workpiece is detached from the stationary mold 3, the ejector pin mechanism 11 resets, and then the third cylinder 601 drives the sealing box 602 to move upward, so that the sealing box 602 moves above the stationary mold 3. Then, while the suction nozzle 904 loses the negative pressure state (that is, the suction pipe 903 no longer evacuates the strip box 902), the metal workpiece is taken off from the suction nozzle 904 through a receiving port 603; after the metal workpiece is taken away, first, the fifth cylinder 1001 drives the positioning slat 801 to move downward to reset, and then the output end of the fourth cylinder 803 retracts to make the two movable slats 804 move away from each other. When one end of the strip box 902 abuts against the inner side wall of the sealing box 602, as the two movable slats 804 continue to move away from each other, one end of the strip box 902 slides on the inner side wall of the sealing box 602, and the strip box 902 drives the rotating shaft 901 to rotate, so that the angle between the movable slat 804 and the strip box 902 gradually decreases, and at the same time, the torsion force of the torsion spring 905 also gradually increases. Until the strip box 902 completely moves to the side of the stationary mold 3, at this time, the angle between the movable slat 804 and the strip box 902 is the smallest (about 10°-15°), thus avoiding problems such as interference between the moving mold 5 and the strip box 902 when the stationary mold 3 and the moving mold 5 are combined, and effectively ensuring the use stability of the whole structure.

[0052] Embodiment Five:

[0053] On the basis of Embodiment Four, as Figure 2 、 Figure 4 and Figures 9-12As shown, a receiving chamber 303 is provided in the stationary mold 3; the receiving chamber 303 is arranged below the molding chamber 302; a plurality of ventilation holes 304 are arranged side by side on the top wall of the receiving chamber 303; a plurality of tapered holes 305 corresponding to the ventilation holes 304 are arranged side by side on the bottom surface of the molding chamber 302; the lower ends of the plurality of tapered holes 305 are respectively communicated with the upper ends of the plurality of ventilation holes 304; the ejector pin mechanism 11 includes a pair of sixth cylinders 1101 vertically bolted to the lower surface of the support plate 101; the output ends of the two sixth cylinders 1101 sequentially penetrate through the support plate 101 and the stationary mold 3 and extend into the receiving chamber 303, and are connected by a mounting plate 1102 between the output ends of the two sixth cylinders 1101; the mounting plate 1102 is bolted to the output end of the sixth cylinder 1101; there is a clearance fit between the mounting plate 1102 and the receiving chamber 303; a plurality of ejector pins 1103 are vertically bolted side by side on the upper surface of the mounting plate 1102; the plurality of ejector pins 1103 are respectively inserted into the plurality of ventilation holes 304, and there is a clearance fit between the ejector pin 1103 and the ventilation hole 304; the upper ends of the plurality of ejector pins 1103 all have a frustum portion 1104 corresponding to the tapered hole 305; the tapered side surface of the frustum portion 1104 can be attached to the inner wall of the tapered hole 305; the pneumatic mechanism 12 includes a pair of seventh cylinders 1201 vertically bolted to the lower surface of the support plate 101; the output ends of the two seventh cylinders 1201 sequentially penetrate through the support plate 101 and the stationary mold 3 and extend into the receiving chamber 303, and are connected by a push plate 1202 between the output ends of the two seventh cylinders 1201; the push plate 1202 is bolted to the output end of the seventh cylinder 1201; the push plate 1202 is arranged below the mounting plate 1102, and the output ends of the two sixth cylinders 1101 both slide through the push plate 1202; when the frustum portion 1104 moves upward and a gap is generated between the frustum portion 1104 and the tapered hole 305, the push plate 1202 is driven by the seventh cylinder 1201 to move upward to push the air in the receiving chamber 303 into the molding chamber 302 through the ventilation holes 304 and the tapered holes 305. During use, the mounting plate 1102 is driven by the sixth cylinder 1101 to move upward, causing the frustum portion 1104 to move upward and a gap to be generated between the frustum portion 1104 and the tapered hole 305. At this time, while the ejector pin 1103 continues to move upward, the push plate 1202 is driven by the seventh cylinder 1201 to move upward, causing the push plate 1202 to push the air in the receiving chamber 303 into the molding chamber 302 through the ventilation holes 304 and the tapered holes 305, thereby accelerating the separation efficiency of the metal workpiece from the receiving chamber 303 and further improving the demolding efficiency of the metal workpiece.

[0054] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific embodiments. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A workpiece casting method for rapid demoulding, characterized in that, It includes the following steps: Step 1: First, drive a pair of split templates (2) to approach the stationary mold (3) simultaneously through the direct drive mechanism (1), so that the lower surface of the split template (2) is in contact with the upper surface of the stationary mold (3); then drive the moving mold (5) to approach the stationary mold (3) through the first lifting mechanism (4), so that the lower surface of the moving mold (5) is combined with the upper surface of the split template (2), and a casting chamber is formed between the stationary mold (3), the moving mold (5) and the two split templates (2). Step 2: Pour molten metal in a hot melt liquid state into the casting chamber through the gate on the moving mold (5); after the metal liquid in the casting chamber cools and solidifies, drive the two split templates (2) to move away from each other through the direct drive mechanism (1), so that the split templates (2) are separated from the stationary mold (3) and the moving mold (5). Step 3: First, drive the air blowing mechanism (7) to move downward between the stationary mold (3) and the moving mold (5) through the second lifting mechanism (6), then blow air into the gap between the stationary mold (3) and the moving mold (5) through the air blowing mechanism (7), and then drive the moving mold (5) to move away from the stationary mold (3) through the first lifting mechanism (4), so that the metal workpiece in the casting chamber is separated from the moving mold (5). Step 4: First, drive the adsorption mechanism (9) to move horizontally between the stationary mold (3) and the moving mold (5) through the push-pull mechanism (8) on the second lifting mechanism (6), and then drive the adsorption mechanism (9) to move downward through the third lifting mechanism (10) via the push-pull mechanism (8), so that the adsorption mechanism (9) adsorbs the metal workpiece on the stationary mold (3). Step 5: Push the metal workpiece on the stationary mold (3) upward through the ejector pin mechanism (11), and drive the adsorption mechanism (9) to move upward through the third lifting mechanism (10) via the push-pull mechanism (8), so that the adsorption mechanism (9) pulls the metal workpiece on the stationary mold (3) upward. At the same time, fill air into the gap between the stationary mold (3) and the metal workpiece through the pneumatic mechanism (12), so as to quickly separate the metal workpiece from the stationary mold (3).

2. A workpiece casting method for rapid demolding according to claim 1, characterized in that, The direct drive mechanism (1) includes a horizontally arranged support plate (101); the stationary mold (3) is fixed on the upper surface of the support plate (101); a pair of mounting columns (102) are vertically and fixedly arranged side by side on the upper surface of the support plate (101); the outer sides of the two mounting columns (102) are horizontally fixed with first cylinders (103); the output ends of the two first cylinders (103) respectively slide through the two mounting columns (102) and extend between the two mounting columns (102), and the two split templates (2) are respectively horizontally fixed on the output ends of the two first cylinders (103); the lower surfaces of the two split templates (2) can be in sliding contact with the upper surface of the stationary mold (3).

3. A workpiece casting method for rapid demolding according to claim 2, characterized in that, Both of the two sub-molds (2) are in a U-shaped structure; convex blocks (301) are arranged on the opposite sides of the upper surface of the static mold (3); a molding cavity (302) is formed on the upper surface of the static mold (3), and the molding cavity (302) is arranged between the two convex blocks (301); the first lifting mechanism (4) includes a bearing plate (401) horizontally fixed on the upper ends of the two mounting columns (102); a pair of second cylinders (402) are vertically fixed side by side on the upper surface of the bearing plate (401); the output ends of the two second cylinders (402) both slide through the bearing plate (401) and are fixed on the top wall of the moving mold (5); when the two ends of each sub-mold (2) are respectively in contact with the two convex blocks (301) and the lower surface of the moving mold (5) is in contact with the upper surfaces of the two sub-molds (2), the space enclosed between the two sub-molds (2) and the molding cavity (302) together form the casting cavity.

4. A workpiece casting method for rapid demolding according to claim 3, characterized in that, The second lifting mechanism (6) includes a pair of third cylinders (601) vertically fixed side by side on the upper surface of the bearing plate (401); the output ends of the two third cylinders (601) both slide through the bearing plate (401) and are connected through a sealing box (602); accommodation openings (603) are formed in the top wall and the bottom wall of the sealing box (602); the static mold (3) can slide through one accommodation opening (603), and the moving mold (5) can slide through the other accommodation opening (603).

5. A workpiece casting method for rapid demolding according to claim 4, characterized in that, The air blowing mechanism (7) includes a pair of air blowing pipes (701) horizontally arranged in the lower part of the sealing box (602); the length directions of the two air blowing pipes (701) are both perpendicular to the telescopic direction of the output end of the first cylinder (103); one ends of the two air blowing pipes (701) are both fixed on one side wall of the sealing box (602), and the other ends of the two air blowing pipes (701) both penetrate through the other side wall of the sealing box (602) and are fixed on an air supply pipe (702); a plurality of air nozzles (703) are horizontally fixed on the two air blowing pipes (701) along the axial direction; the plurality of air nozzles (703) are arranged between the two air blowing pipes (701); when the two sub-molds (2) are separated from the static mold (3) and the static mold (3) is arranged in one accommodation opening (603), the plurality of air nozzles (703) are all located between the static mold (3) and the moving mold (5).

6. A workpiece casting method for rapid demoulding according to claim 4 or 5, characterized in that The third lifting mechanism (10) includes a pair of fifth cylinders (1001) fixedly arranged vertically side by side on the top wall of the sealed box (602); the output ends of the two fifth cylinders (1001) both slide through the top wall of the sealed box (602); the pushing and pulling mechanism (8) includes a pair of positioning slats (801) horizontally fixed on the output ends of the two fifth cylinders (1001); the length directions of the two positioning slats (801) are both arranged parallel to the telescopic direction of the output end of the first cylinder (103); the ends of the two positioning slats (801) are connected by a pair of guide rods (802); a pair of fourth cylinders (803) are horizontally arranged between the two guide rods (802); the tails of the two fourth cylinders (803) are respectively rotatably connected to the two positioning slats (801); the output ends of the two fourth cylinders (803) are both horizontally and rotatably connected with movable slats (804), and the two ends of each movable slat (804) are respectively slidably connected to the two guide rods (802).

7. A workpiece casting method for rapid demolding according to claim 6, characterized in that, The adsorption mechanism (9) includes a plurality of rotating shafts (901) respectively vertically and rotatably connected to the lower surfaces of the two movable slats (804); strip boxes (902) are horizontally fixed at the lower ends of the plurality of rotating shafts (901), and the strip boxes (902) arranged on the same movable slat (804) are connected by an air extraction pipe (903); a plurality of suction nozzles (904) are fixedly arranged vertically side by side on the lower surface of each strip box (902); torsion springs (905) are vertically fixed on the upper surfaces of the plurality of strip boxes (902); the plurality of torsion springs (905) are respectively sleeved on the plurality of rotating shafts (901), and the upper end of each torsion spring (905) is fixed on the adjacent movable slat (804).

8. A workpiece casting method for rapid demoulding according to claim 1, characterized in that, The stationary mold (3) is provided with a receiving chamber (303) therein; the receiving chamber (303) is arranged below the molding chamber (302); a plurality of ventilation holes (304) are arranged side by side on the top wall of the receiving chamber (303); a plurality of tapered holes (305) corresponding to the ventilation holes (304) are arranged side by side on the bottom surface of the molding chamber (302); the lower ends of the plurality of tapered holes (305) are respectively communicated with the upper ends of the plurality of ventilation holes (304); the ejector pin mechanism (11) includes a pair of sixth cylinders (1101) vertically fixed on the lower surface of the support plate (101); the output ends of the two sixth cylinders (1101) sequentially penetrate through the support plate (101) and the stationary mold (3) and extend into the receiving chamber (303), and the output ends of the two sixth cylinders (1101) are connected by a mounting plate (1102); a plurality of ejector pins (1103) are vertically fixed side by side on the upper surface of the mounting plate (1102); the plurality of ejector pins (1103) are respectively inserted into the plurality of ventilation holes (304), and the ejector pins (1103) are in clearance fit with the ventilation holes (304); the upper ends of the plurality of ejector pins (1103) are all provided with frustum-shaped portions (1104) corresponding to the tapered holes (305); the tapered side surface of the frustum-shaped portion (1104) can be attached to the inner wall of the tapered hole (305).

9. A workpiece casting method for rapid demoulding according to claim 8, characterized in that, The pneumatic mechanism (12) includes a pair of seventh cylinders (1201) vertically fixed on the lower surface of the support plate (101); the output ends of the two seventh cylinders (1201) sequentially penetrate through the support plate (101) and the stationary mold (3) and extend into the receiving chamber (303), and the output ends of the two seventh cylinders (1201) are connected by a push plate (1202); the push plate (1202) is arranged below the mounting plate (1102), and the output ends of the two sixth cylinders (1101) are both slidably inserted through the push plate (1202); when the frustum-shaped portion (1104) moves upward and a gap is generated between the frustum-shaped portion and the tapered hole (305), the push plate (1202) is driven by the seventh cylinder (1201) to move upward to push the air in the receiving chamber (303) into the molding chamber (302) through the ventilation holes (304) and the tapered holes (305).

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