Non-ferrous high-pressure casting device

Abstract

The application provides a non-ferrous metal high-pressure casting device, which comprises a lower die base and a lower die plate fixedly installed at the middle part of the upper portion of the lower die base, the opposite sides of the upper portion of the lower die base are provided with upper die bases, the middle part of the lower portion of the upper die base is fixedly installed with an upper die plate, the middle part of the upper die plate is installed with a sprue pipe, the outer portion of the sprue pipe is provided with a transmission mechanism, the inner surface of the sprue pipe is provided with a matching groove, and the inner portion of the matching groove is provided with a scraping mechanism; the two sides of the lower portion of the upper die base are fixedly installed with upper limiting mechanisms, the opposite sides of the lower portion of the upper limiting mechanism are provided with lower limiting mechanisms, and the lower limiting mechanisms are rotationally arranged on the lower die base; the upper limiting mechanism and the lower limiting mechanism are sleeved when the upper die plate and the lower die plate move towards each other. The transmission mechanism continuously drives the scraping mechanism to rotate by using strong magnetic force, so that the scraping mechanism can make radial scraping action around the inner surface of the sprue pipe, thereby the residues possibly existing on the inner surface of the sprue pipe can be scraped.

Description

Technical Field

[0001] This invention belongs to the field of non-ferrous metal casting technology, and particularly relates to a non-ferrous metal high-pressure casting apparatus. Background Technology

[0002] High-pressure casting of non-ferrous metals is a manufacturing technology that rapidly injects molten metal, such as zinc alloys and magnesium alloys, into a mold cavity under high pressure, allowing it to solidify and take shape in a short time. This process usually occurs under high pressure, with the molten metal filling the mold at an extremely fast speed and solidifying in a very short time to form parts with high density and good mechanical properties.

[0003] In current non-ferrous metal high-pressure casting equipment, during long-term casting processes, the inner wall of the gate will become narrowed and the resistance to molten metal flow will increase due to the residue of molten metal solidification, oxide scale retention, and the adhesion of impurity particles. This will affect the continuity of die casting and the product qualification rate. At the same time, impurity particles are difficult to remove effectively and tend to accumulate, which will further affect the normal operation of die casting. Furthermore, when slight deviation occurs in die casting, it is difficult to provide timely feedback, which can easily lead to danger and damage to the equipment.

[0004] To address the above problems, a high-pressure casting device for non-ferrous metals is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a non-ferrous metal high-pressure casting apparatus. By using this apparatus, the problem mentioned above is solved: during the long casting process, impurity particles remain on the inner wall of the gate, leading to narrowing of the flow channel, increased resistance to molten metal flow, and consequently affecting the continuity of die casting and the product qualification rate.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A non-ferrous metal high-pressure casting apparatus includes a lower mold base and a lower template fixedly installed in the middle of the upper part of the lower mold base. An upper mold base is provided on the opposite side above the lower mold base, and an upper template is fixedly installed in the middle of the lower part of the upper mold base. Cooling ports are connected to the outer surfaces of both the lower template and the upper template. Flow channels are opened inside both the lower template and the upper template. The cooling ports are connected to the flow channels. A sprue pipe is installed in the middle of the upper template. The sprue pipe passes through the upper template and the upper mold base, and the top end of the sprue pipe is located on the upper surface of the upper mold base. A transmission mechanism is provided outside the sprue pipe, and a mating groove is opened on the inner surface of the sprue pipe. A scraping mechanism is provided inside the mating groove. Upper limit mechanisms are fixed on both sides below the upper mold base, and a lower limit mechanism is provided on the opposite side below the upper limit mechanism. The lower limit mechanism is rotatably mounted on the lower mold base, and a spraying mechanism is installed on one side of the surface of the lower limit mechanism. When the upper and lower mold plates move together, the upper limit mechanism and the lower limit mechanism are engaged.

[0007] Furthermore, the transmission mechanism includes a geared motor fixedly connected to the upper mold base, and the output end of the geared motor is connected to a rotating wheel. A synchronous belt is fitted on the outer surface of the rotating wheel, and a fixed wheel is provided on one side of the synchronous belt. The rotating wheel is connected to the fixed wheel through the synchronous belt. A rotating sleeve is fixed inside the fixed wheel and is rotatably positioned outside the sprue pipe. A limiting block for limiting the position of the rotating sleeve is fixed on the outer surface of the sprue pipe. An electromagnetic ring is provided on one side of the inside of the rotating sleeve, and a collection seat is installed on the lower inside of the rotating sleeve.

[0008] Furthermore, the scraping mechanism includes a mating surface disposed on the inner wall of the gating pipe, and an interlocking scraper is disposed on the mating surface. A contact plate is fixed on the bottom surface of the interlocking scraper, and a slag-slipping port is disposed on the lower interior of the interlocking scraper.

[0009] Furthermore, a fixing cone is fixed to the inner rear side of the mating surface, and a mating cone groove is provided on the surface of the contact plate, with the mating cone groove corresponding to the position of the fixing cone.

[0010] Furthermore, the collection seat includes a collection trough located inside the lower part of the rotating sleeve, and a fixed bottom cover is fixed to the bottom of the collection trough. Both the surface of the collection trough and the surface of the rotating sleeve are provided with slag discharge ports. A gas distribution pipe is connected to the upper side of the rotating sleeve, and an air outlet is provided on the upper side of the inner surface of the rotating sleeve. The air outlet is arranged in a ring along the rotating sleeve, and a vent is provided on the upper surface of the contact plate.

[0011] Furthermore, the upper limit mechanism includes upper positioning sleeves fixed on both sides below the upper mold base, and a fixed sleeve is fixed inside the upper positioning sleeve. A connecting spring is fixed inside the fixed sleeve, and a plug-in post is fixed at the bottom of the connecting spring. The plug-in post is slidably connected to the fixed sleeve, and a fixed block is fixed on one side of the inner wall of the upper positioning sleeve.

[0012] Furthermore, the lower limit mechanism includes a lower positioning post located below the outside of the upper positioning sleeve, and a rotating seat is rotatably connected to the bottom of the lower positioning post. The rotating seat is fixedly connected to the lower mold base. An inclined guide groove is provided on the outer surface of the lower positioning post. When the upper mold base and the upper template move to close the mold base and the lower template, the fixed block is slidably connected to the inclined guide groove. An air supply pipe is connected to one side of the lower positioning column, and a connecting channel is opened in the middle of the inner side of the lower positioning column, with the air supply pipe connected to the connecting channel.

[0013] Furthermore, the blowing mechanism includes an air outlet pipe connected to the lower positioning column, and the air outlet pipe is connected to the connecting channel, with a blowing head installed at the front end of the air outlet pipe.

[0014] Furthermore, a receiving groove is provided at the top of the lower positioning post, the bottom end of the receiving groove is connected to the top of the connecting channel, and the inner diameter of the receiving groove is larger than the inner diameter of the connecting channel.

[0015] Furthermore, a narrowing section is provided in the middle of the inner side of the exhaust pipe, and an air intake pipe is connected to the middle of the upper part of the narrowing section. A pressure sensor is fixed in the middle of the inner side of the air intake pipe, and an elastic block is provided above the pressure sensor. The elastic block is elastically connected to the air intake pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention uses a transmission mechanism to continuously drive the scraping mechanism to rotate by strong magnetic force, so that the scraping mechanism can make radial scraping motion around the inner surface of the sprue pipe, thereby scraping away any residue that may exist on the inner surface of the sprue pipe, avoiding the problem of shrinkage of the flow channel cross section and flow turbulence due to residue. At the same time, the scraping mechanism can retract after scraping, so as not to affect the high-speed filling and pressure holding of the molten metal in the sprue pipe.

[0017] 2. This invention can avoid the possibility of slag accumulation in the interlocking scraper, ensure good fit between the interlocking scraper and the mating surface, and at the same time, it can help blow the scraped slag down and allow airflow to be introduced into the interlocking scraper from top to bottom to blow the slag in the interlocking scraper toward the slag discharge port, thereby further reducing the possibility of slag accumulation.

[0018] 3. This invention can improve the area and effect of blowing on the template surface, avoid the problem of blowing dead corners that are easily caused by fixed-point blowing, and at the same time, by using the ejected airflow, it can monitor and prompt when the mold is closed, so as to avoid abnormal mold closing, which could lead to unqualified products, dangers and equipment damage, and improve the safety of casting equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of the present invention; Figure 2 This is a cross-sectional view of the internal three-dimensional structure of the upper template of the present invention; Figure 3 This is a cross-sectional three-dimensional structural diagram of the gating pipe of the present invention; Figure 4 This is a cross-sectional three-dimensional structural diagram of the rotating sleeve when the interlocking scraper slides out according to the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the three-dimensional structure viewed from below; Figure 6 This is a cross-sectional view of the gate pipe after the splice returns to its original position according to the present invention. Figure 7 For the present invention Figure 6 A schematic diagram of the three-dimensional structure viewed from below; Figure 8 This is a partial cross-sectional view of the internal three-dimensional structure of the gating pipe of the present invention; Figure 9 This is a side perspective three-dimensional structural diagram of the interlocking scraper of the present invention; Figure 10 This is a cross-sectional three-dimensional structural diagram of the upper positioning sleeve of the present invention; Figure 11 This is a cross-sectional three-dimensional structural diagram of the internal structure of the present invention after the upper positioning sleeve and lower positioning post are fitted together. Figure 12 This is a partial cross-sectional view of the internal three-dimensional structure of the air outlet pipe of the present invention; Figure 13 This is a top-view cross-sectional three-dimensional structural diagram of the upper positioning sleeve and lower positioning post after they are connected. Figure 14 This is a rear view schematic diagram of the gating pipe and mating groove of the present invention.

[0020] In the diagram: 1. Lower mold base; 2. Lower template; 3. Upper mold base; 4. Upper template; 5. Upper limit mechanism; 51. Upper positioning sleeve; 52. Fixed sleeve; 53. Connecting spring; 54. Insertion post; 55. Fixed block; 6. Lower limit mechanism; 61. Lower positioning post; 62. Rotating seat; 63. Inclined guide groove; 64. Air supply pipe; 65. Connecting channel; 66. Receiving groove; 7. Sprue pipe; 8. Transmission mechanism; 81. Gear motor; 82. Rotating wheel; 83. Synchronous belt; 84. Fixed wheel; 85. Rotating sleeve; 86. Electromagnetic ring; 87. Collection. 871. Base; 872. Collection tank; 873. Fixed bottom cover; 874. Slag discharge port; 88. Gas distribution pipe; 89. Gas outlet; 810. Limiting block; 9. Scraping mechanism; 91. Contact surface; 92. Fitting scraper; 93. Contact plate; 94. Fixed cone; 95. Matching cone groove; 96. Slag sliding port; 97. Vent hole; 10. Blowing mechanism; 101. Gas outlet pipe; 102. Diameter reduction section; 103. Blowing head; 104. Air intake pipe; 105. Elastic block; 106. Pressure sensor; 20. Cooling port; 30. Matching groove; 40. Flow channel. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] To address the technical problem of impurity particles remaining on the inner wall of the gating system during long casting processes, leading to narrowed flow channels, increased resistance to molten metal flow, and consequently affecting the continuity of die casting and product yield, such as... Figures 1-9 As shown, the following technical solutions are provided: A non-ferrous metal high-pressure casting apparatus includes a lower mold base 1 and a lower template 2 fixedly installed in the upper middle part of the lower mold base 1. An upper mold base 3 is provided on the upper opposite side of the lower mold base 1. When the mold is closed, the lower mold base 1 is connected to the upper mold base 3 through a limiting structure, and an upper template 4 is fixedly installed in the lower middle part of the upper mold base 3. The lower mold base 1, lower template 2, upper mold base 3 and upper template 4 constitute the mold used in existing metal high-pressure casting, which is mainly used for rapid and precise forming of non-ferrous non-ferrous metals such as magnesium and zinc. Its existing specific casting principle will not be elaborated in this case.

[0024] Both the lower mold plate 2 and the upper mold plate 4 have several cooling ports 20 on their outer surfaces, and both have flow channels 40 inside. The cooling ports 20 are connected to the flow channels 40. The flow channels 40 are S-shaped, and the cooling ports 20 on the lower mold plate 2 and the upper mold plate 4 include inlets and outlets. One end of the inlet of the cooling port 20 is connected to the existing cooling circulation equipment pipeline outside the mold, and the other end of the inlet of the cooling port 20 is connected to one end of the flow channel 40, allowing circulating coolant to flow through. One end of the outlet of the cooling port 20 is connected to the other end of the flow channel 40, and the other end of the outlet of the cooling port 20 is connected to the external cooling circulation equipment pipeline. During casting, the coolant can flow through the flow channels 40 to cool the lower mold plate 2 and the upper mold plate 4. The lower mold plate 2, the upper mold base 3, and the upper mold plate 4 are made of non-magnetic metal.

[0025] A sprue pipe 7 is installed in the middle of the upper mold plate 4. The sprue pipe 7 passes through the upper mold plate 4 and the upper mold base 3, and its top end is located on the upper surface of the upper mold base 3. The sprue pipe 7 is made of non-magnetic metal. It can be connected to an external injection pipe to allow molten zinc to flow into the mold cavity for subsequent casting. A transmission mechanism 8 is installed on the outside of the sprue pipe 7, and is fixedly installed inside the upper mold base 3. A mating groove 30 is formed on the inner surface of the sprue pipe 7, which communicates with the sprue pipe 7. A scraping mechanism 9 is installed inside the mating groove 30. During hydraulic injection filling, the molten liquid flows within the sprue pipe 7. At this time, the transmission mechanism 8 is in a non-transmission state, while the scraping mechanism 9 engages with the mating groove 30. After the scraping mechanism 9 is closed, the outer wall is flush with the inner surface of the gating pipe 7 without any protrusions, and there are small gaps. However, the gaps do not affect the normal operation of the gating pipe 7, allowing the molten zinc to flow smoothly from the gating pipe 7 to ensure the smooth progress of casting. After the casting is solidified, the lower mold 2 and the upper mold 4 are opened, and the casting is demolded. At this time, the gating pipe 7 is in an empty state. During the long casting process, the inner wall of the gating pipe 7 will become narrower and the resistance to the flow of molten metal will increase due to the condensation residue of molten metal, the retention of oxide scale, and the adhesion of impurity particles. This will affect the continuity of die casting and the product qualification rate. When the sprue pipe 7 is in an idle state, the transmission mechanism 8 is activated, allowing it to rotate radially on the outer surface of the sprue pipe 7. The transmission mechanism 8 and the scraping mechanism 9 are connected by a strong magnetic force. When the transmission mechanism 8 rotates, the strong magnetic force attracts the scraping mechanism 9, generating a force that drives it to rotate. The scraping mechanism 9 and the mating groove 30 are inclined, so when the transmission mechanism 8 drives the scraping mechanism 9 to rotate, the scraping mechanism 9 slides out along the inclined surface, causing the outer surface of the scraping mechanism 9 to adhere to the inner surface of the sprue pipe 7. At this time, the transmission mechanism 8 uses the strong magnetic force to continuously drive the scraping mechanism 9 to rotate, allowing the scraping mechanism 9 to perform a radial scraping action around the inner surface of the sprue pipe 7. This removes any residue that may be present on the inner surface of the sprue pipe 7, preventing the flow channel cross-section of the sprue pipe 7 from shrinking due to residue and causing flow turbulence.

[0026] When the servo-type transmission mechanism 8, based on the pre-set control signal according to existing principles, drives the scraping mechanism 9 to rotate one revolution, so that the scraping mechanism 9 is just at the edge of the mating groove 30 on the inner surface of the gating pipe 7, but not falling into the mating groove 30 on the inner surface of the gating pipe 7, the servo-type transmission mechanism 8 then drives the scraping mechanism 9 to rotate in the opposite direction, so that the scraping mechanism 9 rotates back into the mating groove 30 on the inner surface of the gating pipe 7, and then the transmission mechanism 8 stops rotating, thus completing one scraping and cleaning process, so as to facilitate the next casting operation. In this way, the scraping mechanism 9 can complete automatic cleaning to ensure the continuity of die casting and the product qualification rate, while the retraction of the scraping mechanism 9 will not affect the high-speed filling and pressure holding of the molten metal in the gating pipe 7.

[0027] Upper mold base 3 has upper limit positioning mechanisms 5 fixed on both sides below it. During mold closing, the upper limit positioning mechanism 5 is sleeved on one end of the lower limit positioning mechanism 6, and the lower limit positioning mechanism 6 is rotatably mounted on the lower mold base 1. When the upper mold base 3 and the upper template 4 move to close the mold to the lower mold base 1 and the lower template 2, the upper limit positioning mechanism 5 and the lower limit positioning mechanism 6 will engage to position the mold closing and ensure casting accuracy. A blowing mechanism 10 is installed on one side of the surface of the lower limit positioning mechanism 6, and the blowing mechanism 10 is located below the upper limit positioning mechanism 5. High-pressure air is introduced into the lower limit positioning mechanism 6 using existing external air supply equipment and pipelines, and can then be sprayed out from the blowing mechanism 10. When the upper mold 4 and the lower mold 2 move together but are not fully aligned, the upper limit mechanism 5 and the lower limit mechanism 6 are engaged, and the blowing mechanism 10 sprays out high-pressure airflow to blow away the surface of the upper mold 4 and the lower mold 2, thereby ensuring the cleanliness of the casting and the yield of the product. After the upper mold 4 and the lower mold 2 are aligned, the blowing mechanism 10 stops blowing.

[0028] When the upper mold plate 4 and the lower mold plate 2 move together, the upper limit mechanism 5 and the lower limit mechanism 6 are engaged. The lower limit mechanism 6 is rotatably mounted on the lower mold base 1 and has a groove structure with a specific path. Since the upper limit mechanism 5 cannot rotate, the groove structure causes the upper limit mechanism 5 to generate a guiding force on the lower limit mechanism 6. This allows the lower limit mechanism 6 to rotate when the upper limit mechanism 5 moves. When the lower limit mechanism 6 rotates, it also drives the blowing mechanism 10 to rotate, enabling the blowing mechanism 10 to perform a blowing action on the mold plate surface. This increases the blowing area and effect on the mold plate surface, avoiding the problem of blind spots caused by fixed-point blowing. At the same time, the blowing action of the blowing mechanism 10 is automatically formed by the movement during mold closing, which also avoids the trouble and safety issues of relying on manual blowing, and also reduces the cost of setting up an external power source for blowing and oscillation.

[0029] When the upper mold plate 4 and lower mold plate 2 are normally closed, and when the upper limit mechanism 5 and lower limit mechanism 6 are normally engaged and positioned, the blowing air pressure sprayed from the blowing mechanism 10 will also be normal. The blowing mechanism 10 will provide normal feedback to the existing controller installed outside the device. When the upper mold plate 4 and lower mold plate 2 are slightly misaligned during long-term casting work, the upper limit mechanism 5 and lower limit mechanism 6 will also be slightly misaligned during engagement. At this time, the high-pressure airflow entering the lower limit mechanism 6 will leak, causing the airflow sprayed from the blowing mechanism 10 to weaken or fail to spray. In this case, the blowing mechanism 10 will provide abnormal feedback in conjunction with the controller. With the existing alarm device outside the device, the operator can be alerted and the machine can be stopped to avoid abnormal mold closing of the upper mold plate 4 and lower mold plate 2, which could lead to product defects, danger, and equipment damage. This will help improve the safety of the casting device.

[0030] Please refer to Figure 3 The transmission mechanism 8 includes a geared motor 81 fixedly connected to the upper mold base 3. The geared motor 81 is a servo motor that can rotate precisely. The output end of the geared motor 81 is connected to a rotating wheel 82. A synchronous belt 83 is sleeved on the outer surface of the rotating wheel 82, and a fixed wheel 84 is sleeved on one side of the synchronous belt 83. The rotating wheel 82 is connected to the fixed wheel 84 through the synchronous belt 83. When the geared motor 81 drives the rotating wheel 82 to rotate, the synchronous belt 83 can simultaneously drive the fixed wheel 84 to rotate.

[0031] A rotating sleeve 85 is fixed to the inner side of the fixed wheel 84. The rotating sleeve 85 is hollow and rotatably positioned outside the sprue pipe 7. A limit block 810 is fixed to the outer surface of the sprue pipe 7. The limit block 810 cooperates with the rotating sleeve 85, allowing the rotating sleeve 85 to rotate radially on the sprue pipe 7 after being restricted in position by the limit block 810. When the fixed wheel 84 rotates, the rotating sleeve 85 can simultaneously reciprocate radially on the outside of the sprue pipe 7 to prevent the cable from getting tangled. An electromagnetic ring 86 is provided on one side of the inside of the rotating sleeve 85. The electromagnetic ring 86 has multiple turns of coil. When energized by a cable from outside the device, it can generate a strong magnetic attraction force. A collection seat 87 is installed on the lower inner side of the rotating sleeve 85. The collection seat 87 is installed with the rotating sleeve 85 using countersunk screws.

[0032] Please refer to Figure 4 and Figure 5The scraping mechanism 9 includes a mating surface 91 disposed on the inner wall of the gating pipe 7. One side of the mating surface 91 is inclined, and the other side is vertical. An interlocking scraper 92 is disposed on the mating surface 91. A contact plate 93 is fixed to the bottom surface of the interlocking scraper 92. A strong magnetic block made of samarium cobalt is disposed inside the contact plate 93, so that the strong magnetic block is not affected by the temperature of the zinc melt flowing in the gating pipe 7. During injection filling, the interlocking scraper 92 is interlocked with the gating pipe 7 by the mating surface 91 and the mating groove 30. The outer wall of the interlocking scraper 92 is flush with the gating pipe 7. The inner surface of the gating pipe 7 is flat and without protrusions, and there are tiny gaps, but the gaps do not affect the normal operation of the gating pipe 7, so that the molten zinc can flow smoothly from the gating pipe 7. After the casting is solidified, the lower mold 2 and the upper mold 4 are opened, and the casting is demolded. At this time, the gating pipe 7 is in an empty state. The reduction motor 81 starts to rotate, so that the rotating sleeve 85 can rotate radially on the outer surface of the gating pipe 7. The electromagnetic ring 86 energized in the rotating sleeve 85 will generate a strong magnetic attraction force on the contact plate 93 in the fitting scraper 92.

[0033] When the rotating sleeve 85 rotates, it generates a force that drives the fitting scraper 92 to rotate under the attraction of the magnetic force. Because one side of the contact surface 91 is inclined and the other side is vertical, when the rotating sleeve 85 drives the fitting scraper 92 to rotate, the fitting scraper 92 can slide out along the inclined side of the contact surface 91, so that the outer surface of the contact plate 93 on the fitting scraper 92 is attached to the inner surface of the gate pipe 7. At this time, the rotating electromagnetic ring 86 uses magnetic force to continuously drive the fitting scraper 92 and the contact plate 93 to rotate, so that the contact plate 93 can make a radial scraping action around the inner surface of the gate pipe 7. Although the distance between the contact plate 93 and the electromagnetic ring 86 increases after the contact plate 93 rotates out, the magnetic force generated does not affect the magnetic attraction effect. This allows the residue that may exist on the inner surface of the gate pipe 7 to be scraped off, avoiding the problems of reduced flow channel cross-section and turbulent flow in the gate pipe 7. At the same time, by using existing technology to precisely control the number of coil turns, current intensity and magnetic circuit structure of the electromagnetic ring 86, it can be ensured that the electromagnetic force of the electromagnetic ring 86 is greater than the resultant force of the weight of the fitting scraper 92 and the sliding friction, so that the fitting scraper 92 can make directional radial rotation in the gate pipe 7, without the fitting scraper 92 falling due to gravity.

[0034] When the fitting scraper 92 rotates one revolution, so that it is just at the edge of the vertical surface of the mating surface 91 without falling into the mating groove 30, the reduction motor 81 rotates in the opposite direction, eventually causing the fitting scraper 92 to rotate back into the mating groove 30. Then the reduction motor 81 stops rotating, thus completing one scraping and cleaning process, so as to facilitate the next casting operation. In this way, the fitting scraper 92 can automatically clean the inner wall of the gating pipe 7 to ensure the continuity of die casting and the product qualification rate. At the same time, the fitting scraper 92 retracts back into the mating groove 30 without affecting the high-speed filling and pressure holding of the molten metal in the gating pipe 7. In addition, the fitting scraper 92 is in a non-fixed state, which makes subsequent maintenance more convenient.

[0035] To address the technical problem of impurity particles being difficult to remove effectively, easily accumulating and further affecting the normal operation of die casting, such as... Figures 3-9 as well as Figure 14 As shown, the following technical solutions are provided: A fixed cone 94 is fixed to the rear side of the inner side of the mating surface 91. A mating cone groove 95 is provided on the surface of the contact plate 93. The mating cone groove 95 corresponds to the fixed cone 94. When the fitting scraper 92 is normally embedded in the mating surface 91, the fixed cone 94 is just embedded in the mating cone groove 95. When the fitting scraper 92 rotates out and retracts back into the mating groove 30, the fixed cone 94 and the mating cone groove 95 have a magnetic attraction. The cone bottom of the mating cone groove 95 can guide and cooperate with the cone tip of the fixed cone 94 under the magnetic attraction, so that the fitting scraper 92 can return to its normal position. This avoids the problem of a gap between the fitting scraper 92 and the mating groove 30 due to slight displacement when the fitting scraper 92 retracts, thus ensuring good fitting of the fitting scraper 92.

[0036] The inner lower part of the fitted scraper 92 is provided with a slag sliding port 96. The slag sliding port 96 is inclined, which is conducive to the slag sliding down. When the contact plate 93 scrapes, most of the slag particles will fall directly down the inner wall of the gate pipe 7 under the action of gravity, so that the falling slag particles can be treated by subsequent spraying, allowing the slag particles to detach from the template surface, while a small amount of slag particles will be deposited on the upper side of the slag sliding port 96.

[0037] The collecting seat 87 includes a collecting groove 871 disposed inside the lower part of the rotating sleeve 85. The collecting groove 871 is disposed through the rotating sleeve 85, and a fixed bottom cover 872 is fixed to the bottom of the collecting groove 871. The fixed bottom cover 872 is flush with the bottom surface of the rotating sleeve 85 and is fixed to the rotating sleeve 85 by countersunk screws. Both the surface of the collecting groove 871 and the surface of the rotating sleeve 85 are provided with slag discharge ports 873. When the fitting scraper 92 scrapes and retracts back into the mating surface 91, the slag discharge port 96 on the rear side of the fitting scraper 92... Just as it coincides with the slag discharge port 873, when the fitted scraper 92 is magnetically retracted into the mating groove 30, there will be an impact effect. At this time, a small amount of slag collected on the upper side of the slag discharge port 96 will fall into the collection groove 871 under the action of the impact force, thus avoiding the possibility of slag accumulation in the fitted scraper 92 and ensuring a good fit between the fitted scraper 92 and the mating groove 30. At the same time, during maintenance, the fixed bottom cover 872 and the collection groove 871 can be removed to process the collected slag.

[0038] A gas distribution pipe 88 is connected to the upper side of the rotating sleeve 85, and an air outlet 89 is provided on the upper side of the inner surface of the rotating sleeve 85. The air outlet 89 is arranged in a ring along the rotating sleeve 85. A vent hole 97 is provided on the upper surface of the contact plate 93. The gas distribution pipe 88 is connected to an external gas supply device, which can introduce gas into the hollow rotating sleeve 85. The gas can eventually be ejected from the air outlet 89. When the rotating sleeve 85 and the fitting scraper 92 rotate, the gas ejected from the air outlet 89 can be blown into the pouring pipe 7 from the mating groove 30 side, thereby utilizing the gas during slag scraping. The airflow blown from the top inside the sprue pipe 7 can help to blow the scraped slag down. At the same time, when the fitting scraper 92 retracts into the mating groove 30 of the mating surface 91, since the mating groove 30 is connected to the sprue pipe 7, the contact plate 93 is directly exposed to the outside of the sprue pipe 7, and the vent hole 89 corresponds to the mating groove 30. At this time, the airflow blown from the vent hole 89 can be passed from top to bottom into the fitting scraper 92 through the vent hole 97 to blow the slag inside the fitting scraper 92 toward the slag discharge port 873, thereby further reducing the possibility of slag accumulation.

[0039] To address the technical problem of difficulty in providing timely feedback when slight misalignment occurs during die casting, which can easily lead to danger and equipment damage, such as... Figure 1 as well as Figures 10-13 As shown, the following preferred technical solutions are provided: The upper limit mechanism 5 includes an upper positioning sleeve 51 fixed on both sides below the upper mold base 3, and a fixing sleeve 52 fixed inside the upper positioning sleeve 51. A connecting spring 53 is fixed inside the fixing sleeve 52, and a plug-in post 54 is fixed at the bottom of the connecting spring 53. The plug-in post 54 is slidably connected to the fixing sleeve 52. A fixing block 55 is fixed below the inner wall of the upper positioning sleeve 51.

[0040] The lower limit mechanism 6 includes a lower positioning post 61 disposed below the outside of the upper positioning sleeve 51, such as... Figure 13 As shown, the outer diameter of the upper positioning sleeve 51 is slightly larger than the outer diameter of the lower positioning post 61, creating a certain misalignment space between them. This prevents direct contact and jamming between the upper positioning sleeve 51 and the lower positioning post 61 during subsequent mold closing when slight misalignment occurs. A rotating seat 62 is rotatably connected to the bottom of the lower positioning post 61, and the rotating seat 62 is fixedly connected to the lower mold base 1. An inclined guide groove 63 is formed on the outer surface of the lower positioning post 61. The upper and lower sections of the inclined guide groove 63 are vertical grooves, with the upper section extending to the upper surface of the lower positioning post 61. The middle section of the inclined guide groove 63 is arc-shaped and communicates with the upper and lower sections. The inclined guide groove 63 is a groove structure with a specific path as mentioned above. Figure 13 As shown, the width of the inclined guide groove 63 is slightly larger than the width of the fixed block 55, so that there is a certain misalignment space between the inclined guide groove 63 and the fixed block 55. When the mold closing occurs slightly, the fixed block 55 can also slide into the inclined guide groove 63. When the upper mold base 3 and the upper template 4 move to the lower mold base 1 and the lower template 2 for mold closing, the upper positioning sleeve 51 and the lower positioning post 61 will be sleeved together. When the upper positioning sleeve 51 is sleeved on the lower positioning post 61, the fixed block 55 will slide into the inclined guide groove 63. The continuous downward movement of the fixed block 55 in the inclined guide groove 63 will cause the lower positioning post 61 to rotate under the guiding action between the fixed block 55 and the inclined guide groove 63.

[0041] An air supply pipe 64 is connected to one side of the lower positioning post 61, and a connecting channel 65 is opened in the middle of the inner side of the lower positioning post 61. The air supply pipe 64 is connected to the connecting channel 65. The inner diameter of the connecting channel 65 matches the outer diameter of the insertion post 54. During normal casting mold closing, when the upper positioning sleeve 51 and the lower positioning post 61 are fitted together, the insertion post 54 will slide into the connecting channel 65, so that the insertion post 54 and the connecting channel 65 can position the casting and ensure the machining accuracy.

[0042] The lower positioning post 61 has a receiving groove 66 at its top. The top of the receiving groove 66 is flush with the top of the lower positioning post 61. The bottom of the receiving groove 66 is connected to the top of the connecting channel 65. The inner diameter of the receiving groove 66 is larger than the inner diameter of the connecting channel 65.

[0043] The blowing mechanism 10 includes an air outlet pipe 101 connected to the lower positioning column 61, and the air outlet pipe 101 is connected to the connecting channel 65. A blowing head 103 is installed at the front end of the air outlet pipe 101. The blowing head 103 is a Y-shaped double nozzle. Using the external air supply equipment, high-pressure airflow is introduced into the connecting channel 65 through the air supply pipe 64. When the upper template 4 and the lower template 2 move together but are not fully aligned, the insertion post 54 extends into the connecting channel 65 to seal the top of the connecting channel 65. It operates normally. In this state, under the elastic force of the connecting spring 53, the airflow will not push the plug post 54 to move upward. At this time, the airflow entering the connecting channel 65 will be completely ejected from the blow nozzle 103 through the air outlet pipe 101. The blow nozzle 103 ejects high-pressure airflow, which can blow the surface of the upper mold 4 and the lower mold 2 to blow away the particle impurities attached to the mold, so as to ensure the cleanliness of casting and the yield of products. After the upper mold 4 and the lower mold 2 are aligned, the blowing mechanism 10 stops blowing.

[0044] The upper positioning sleeve 51 is fitted into the lower positioning post 61, causing the lower positioning post 61 to rotate under the guidance of the fixing block 55 and the inclined guide groove 63. This rotation can simultaneously drive the spray head 103 to rotate, allowing the spray head 103 to perform a blowing action on the template surface, thereby increasing the blowing area and effect on the template surface and avoiding the problem of blowing dead corners that are easily caused by fixed-point blowing. At the same time, the blowing action of the spray head 103 is automatically formed by the movement during mold closing, which can also avoid the trouble and safety issues of relying on manual blowing, and also reduce the cost of setting up an external power for blowing and swinging.

[0045] A narrowing section 102 is provided in the middle of the inner side of the exhaust pipe 101, and an air intake pipe 104 is connected to the upper middle of the narrowing section 102. When airflow passes through the narrowing section 102, according to Bernoulli's principle, pressure will be generated in the air intake pipe 104, which will flow into the narrowing section 102. A pressure sensor 106 is fixed in the middle of the inner side of the air intake pipe 104, and an elastic block 105 is provided above the pressure sensor 106. The elastic block 105 is elastically connected to the air intake pipe 104, and the elastic block 105 is variable. The shaped rubber pad covers the diameter of the air intake pipe 104. When pressure is generated inside the air intake pipe 104, the elastic block 105 is deformed and moved downward by the air pressure. When the upper mold plate 4 and the lower mold plate 2 are normally closed, and when the insert column 54 and the connecting channel 65 are normally sleeved and positioned, the blowing air pressure sprayed from the blow nozzle 103 will also be normal. At this time, the air pressure generated in the diameter reduction section 102 will cause the elastic block 105 to move downward and squeeze the pressure sensor 106. At this time, the pressure sensor 106 will be subjected to force. The existing principle controller installed outside the device provides normal feedback. When the upper mold plate 4 and lower mold plate 2 are slightly misaligned during prolonged casting operation, a slight misalignment will also occur between the insertion post 54 and the connecting channel 65. This will cause the insertion post 54 to abut against the bottom surface of the receiving groove 66 and compress the connecting spring 53, resulting in the connecting channel 65 not being able to be filled and sealed. At this time, the high-pressure airflow entering the connecting channel 65 will leak, causing the airflow ejected from the blow nozzle 103 to weaken or fail to eject. Consequently, the air pressure in the narrowing section 102 will weaken, causing the elastic block 105 to move down and reduce the force squeezing the pressure sensor 106. At this time, the pressure sensor 106 will provide abnormal feedback in conjunction with the controller. At the same time, in conjunction with the existing alarm equipment outside the device, it can alert the operator and stop the machine to avoid abnormal mold closing of the upper mold plate 4 and lower mold plate 2, which could lead to product defects, danger, and equipment damage. This will help improve the safety of the casting device.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A non-ferrous metal high-pressure casting apparatus, comprising a lower mold base (1) and a lower template (2) fixedly installed above the middle of the lower mold base (1), an upper mold base (3) is provided on the opposite side above the lower mold base (1), and an upper template (4) is fixedly installed below the middle of the upper mold base (3), characterized in that: The outer surfaces of the lower template (2) and the upper template (4) are connected to cooling ports (20). The interior of the lower template (2) and the upper template (4) is provided with flow channels (40). The cooling ports (20) are connected to the flow channels (40). A sprue pipe (7) is installed in the middle of the upper template (4). The sprue pipe (7) passes through the upper template (4) and the upper mold base (3). The top of the sprue pipe (7) is located on the upper surface of the upper mold base (3). A transmission mechanism (8) is provided on the outside of the sprue pipe (7). A mating groove (30) is provided on the inner surface of the sprue pipe (7). A scraping mechanism (9) is provided inside the mating groove (30). Upper mold base (3) is fixed with upper limit mechanism (5) on both sides below, and lower limit mechanism (6) is provided on the opposite side below the upper limit mechanism (5). The lower limit mechanism (6) is rotatably mounted on the lower mold base (1). A spraying mechanism (10) is installed on one side of the surface of the lower limit mechanism (6). When the upper mold plate (4) and the lower mold plate (2) move together, the upper limit mechanism (5) and the lower limit mechanism (6) are engaged.

2. The non-ferrous metal high-pressure casting apparatus according to claim 1, characterized in that: The transmission mechanism (8) includes a geared motor (81) fixedly connected to the upper mold base (3), and the output end of the geared motor (81) is connected to a rotating wheel (82). The outer surface of the rotating wheel (82) is fitted with a synchronous belt (83), and a fixed wheel (84) is provided on one side of the synchronous belt (83). The rotating wheel (82) is connected to the fixed wheel (84) through the synchronous belt (83). A rotating sleeve (85) is fixed on the inner side of the fixed wheel (84), and the rotating sleeve (85) is rotatably disposed outside the sprue pipe (7). A limiting block (810) for limiting the position of the rotating sleeve (85) is fixed on the outer surface of the sprue pipe (7). An electromagnetic ring (86) is provided on one side of the inner side of the rotating sleeve (85), and a collection seat (87) is installed on the lower inner side of the rotating sleeve (85).

3. The non-ferrous metal high-pressure casting apparatus according to claim 2, characterized in that: The scraping mechanism (9) includes a mating surface (91) provided on the inner wall of the gating pipe (7), and a fitting scraper (92) is provided on the mating surface (91). A contact plate (93) is fixed on the bottom surface of the fitting scraper (92), and a slag outlet (96) is provided inside the lower part of the fitting scraper (92).

4. The non-ferrous metal high-pressure casting apparatus according to claim 3, characterized in that: A fixing cone (94) is fixed on the inner rear side of the mating surface (91), and a mating cone groove (95) is provided on the surface of the contact plate (93). The mating cone groove (95) corresponds to the position of the fixing cone (94).

5. The non-ferrous metal high-pressure casting apparatus according to claim 4, characterized in that: The collection seat (87) includes a collection trough (871) located inside the lower part of the rotating sleeve (85), and a fixed bottom cover (872) is fixed to the bottom of the collection trough (871). Both the surface of the collection trough (871) and the surface of the rotating sleeve (85) are provided with slag discharge ports (873). The upper side of the rotating sleeve (85) is connected to the air distribution pipe (88), and the upper side of the inner surface of the rotating sleeve (85) is provided with an air outlet (89), and the air outlet (89) is arranged in a ring along the rotating sleeve (85). The upper surface of the contact plate (93) is provided with a ventilation hole (97).

6. The non-ferrous metal high-pressure casting apparatus according to claim 1, characterized in that: The upper limit mechanism (5) includes an upper positioning sleeve (51) fixed on both sides below the upper mold base (3), and a fixed sleeve (52) is fixed inside the upper positioning sleeve (51). A connecting spring (53) is fixed inside the fixed sleeve (52), and a plug-in post (54) is fixed at the bottom of the connecting spring (53). The plug-in post (54) is slidably connected to the fixed sleeve (52). A fixing block (55) is fixed on one side of the inner wall of the upper positioning sleeve (51).

7. A non-ferrous metal high-pressure casting apparatus according to claim 6, characterized in that: The lower limit mechanism (6) includes a lower positioning post (61) located below the outside of the upper positioning sleeve (51), and a rotating seat (62) is rotatably connected to the bottom of the lower positioning post (61), and the rotating seat (62) is fixedly connected to the lower mold base (1). An inclined guide groove (63) is provided on the outer surface of the lower positioning post (61). When the upper mold base (3) and the upper template (4) move to close the mold to the lower mold base (1) and the lower template (2), the fixed block (55) is slidably connected to the inclined guide groove (63). An air supply pipe (64) is connected to one side of the lower positioning post (61), and a connecting channel (65) is opened in the middle of the inner side of the lower positioning post (61), and the air supply pipe (64) is connected to the connecting channel (65).

8. The non-ferrous metal high-pressure casting apparatus according to claim 7, characterized in that: The blowing mechanism (10) includes an air outlet pipe (101) connected to the lower positioning column (61), and the air outlet pipe (101) is connected to the connecting channel (65). A blowing head (103) is installed at the front end of the air outlet pipe (101).

9. A non-ferrous metal high-pressure casting apparatus according to claim 7, characterized in that: The top of the lower positioning post (61) is provided with a receiving groove (66), the bottom end of the receiving groove (66) is connected to the top end of the connecting channel (65), and the inner diameter of the receiving groove (66) is larger than the inner diameter of the connecting channel (65).

10. A non-ferrous metal high-pressure casting apparatus according to claim 8, characterized in that: A narrowed section (102) is provided in the middle of the inner side of the air outlet pipe (101), and an air intake pipe (104) is connected to the middle of the upper part of the narrowed section (102). A pressure sensor (106) is fixed in the middle of the inner side of the air intake pipe (104), and an elastic block (105) is provided above the pressure sensor (106), and the elastic block (105) is elastically connected to the air intake pipe (104).

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