A rapid casting equipment for valve flanges

Abstract

This invention discloses a rapid casting equipment for valve flanges, relating to the field of flange manufacturing technology. The invention includes a bottom mold and a top mold, through which molten aluminum alloy for high-strength, lightweight structural components is injected via an injection nozzle to form the flange. The top mold is equipped with a relief sealing plate and an exhaust channel, and utilizes magnetic linkage for automatic displacement to prevent metal jamming from affecting demolding. The mold rod is driven by a hydraulic system, working in conjunction with the unloading pressure chamber to achieve automatic extraction and resetting, pushing the flange apart. An electric cylinder drives a guide rod to move along a bent slide rail groove, ensuring stable lifting and lowering of the top mold, while horizontal and vertical limiting slide rods ensure movement accuracy. The top unloading plate is integrated with a conveyor belt to complete automatic unloading and conveying of the flange. This equipment optimizes the casting process through automated design, improving production efficiency and molding quality, reducing the difficulty of manual operation, and is suitable for high-efficiency and stable flange production needs.

Description

Technical Field

[0001] This invention relates to the field of flange manufacturing technology, specifically to a rapid casting equipment for valve flanges. Background Technology

[0002] Traditional valve flange casting equipment typically employs a simple mold-casting process. The bottom and top molds are manually or semi-automatically connected, and the molten aluminum alloy for high-strength, lightweight structural components is poured in and cooled to form the flange. The mold is then separated manually or using basic mechanical devices to remove the flange. However, this process has significant drawbacks: First, the mold separation and flange demolding rely on manual operation or simple machinery, resulting in low efficiency and susceptibility to mold damage due to improper handling, thus affecting equipment lifespan. Second, traditional equipment lacks effective venting design, making it difficult for air to escape during the injection of the molten aluminum alloy. After cooling, a small amount of metal often remains in the vent, leading to demolding difficulties and surface defects in the finished product. Furthermore, traditional equipment requires manual mold repositioning and handling of the finished product after demolding, which is cumbersome and labor-intensive, making it unsuitable for modern continuous production. Finally, existing technologies lack automated integration design, resulting in fragmented production processes and hindering efficient and stable casting of high-strength, lightweight structural aluminum alloy flanges. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides the following technical solution: a rapid casting equipment for valve flanges, comprising a bottom mold and a top mold, wherein a lower half injection channel and an upper half injection channel are respectively provided on the mating surfaces of the bottom mold and the top mold, forming a complete injection channel, which is connected to the injection nozzle; wherein a relief groove is also provided on the top mold, and a relief sealing plate is slidably disposed in the relief groove, forming an exhaust channel between the top of the relief sealing plate and the top of the relief groove; a limit magnetic block is fixed at the position of the relief sealing plate on the outside of the top mold; a mold rod is slidably sealed at the axial position of the top mold, and the mold rod contacts and cooperates with the bottom mold; and a supporting vertical plate is also included, wherein a bent slide groove is provided on the supporting vertical plate, and a guide rod is slidably installed in the bent slide groove, and a discharge pressure chamber bracket is fixedly installed on the guide rod, the discharge pressure chamber bracket being used to drive the top mold to move, so that the formed flange is separated from the top mold.

[0004] Preferably, the vertical support plate is fixedly installed on the base, and two parallel reinforcing ribs are fixedly installed on the side of the vertical support plate. The two reinforcing ribs are fixedly engaged with the base, and two parallel horizontal limiting slide rods are fixedly installed between the two reinforcing ribs. A vertical limiting slide rod is slidably arranged between the two horizontal limiting slide rods.

[0005] Preferably, the two ends of the vertical limiting slide rod are slidably engaged with two horizontal limiting slide rods, wherein a limiting sliding sleeve block is slidably sleeved on the vertical limiting slide rod, the limiting sliding sleeve block is fixedly engaged with the guide rod, and a vertical beam column is fixedly installed on the base, and an electric cylinder is movably installed at the top of the vertical beam column. The end of the telescopic rod of the electric cylinder is rotatably connected to the guide rod, which is used to drive the guide rod to slide in the bent slide rail groove.

[0006] Preferably, a mold rod drive piston cylinder and a discharge pressure chamber are fixedly installed on the top mold, wherein the mold rod drive piston cylinder is coaxially arranged inside the discharge pressure chamber, and the top and bottom ends of the mold rod drive piston cylinder and the discharge pressure chamber are connected through a first pressure conveying pipe and a second pressure conveying pipe.

[0007] Preferably, the inner wall of the mold rod drive piston cylinder and the inner wall of the unloading pressure chamber are respectively slidably sealed with a mold rod drive piston and an unloading drive annular piston. The mold rod drive piston is fixedly engaged with the mold rod, and the mold rod is slidably sealed with the mold rod drive piston cylinder. At least two unloading push rods are fixedly installed on the unloading drive annular piston. A top sealing cover is slidably sealed on the two unloading push rods. The top sealing cover is fixedly sealed with the unloading pressure chamber. A return spring is arranged around the circumferential surface of the unloading push rod. The two ends of the return spring are fixedly engaged with the end of the unloading push rod away from the unloading drive annular piston and the top sealing cover.

[0008] Preferably, an extension rod is fixedly installed on the retraction sealing plate, a sliding tube support rod is fixedly installed on the outer surface of the feeding pressure chamber, a sliding tube is slidably sleeved on the sliding tube support rod, a passive retraction magnetic block is fixedly installed on the sliding tube, and the bottom end of the sliding tube and the extension rod are movably connected by a linkage rod.

[0009] Preferably, the bottom mold is fixedly installed on the base via a bottom mold seat, and a top unloading plate and a magnetic suction rod are also fixedly installed on the support vertical plate. The unloading pressure chamber bracket and the unloading pressure chamber are fixedly connected.

[0010] Preferably, the top unloading plate is in contact with all the pushing unloading slide bars, and the magnetic suction rod is in magnetic attraction with the passive retraction magnetic block.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The device of the present invention drives the guide rod to move along the bent slide rail groove through the electric cylinder, thereby separating the top mold from the bottom mold. The hydraulic linkage design of the feeding pressure chamber and the mold rod driving the piston cylinder enables the mold rod to automatically extract the formed flange, and at the same time pushes the feeding slide rod to cooperate with the top unloading plate to complete the flange separation. This automated design avoids the tedious operation of traditional manual separation, greatly shortens the production cycle, and improves the casting efficiency of valve flanges, which is particularly suitable for mass production needs; (2) The present invention adopts a structure of horizontal limiting slide bar and vertical limiting slide bar combined with limiting sliding block to ensure that the guide rod does not rotate when moving in the bent slide rail groove, and keeps the axis of the top mold and the unloading pressure chamber perpendicular; (3) The top mold of the present invention is equipped with a retraction slide groove and a retraction sealing plate, which discharges the air when the high-strength and lightweight structural component die-cast aluminum alloy melt is injected through the exhaust channel, and uses the magnetic linkage of passive retraction magnetic block and magnetic suction rod to make the retraction sealing plate automatically move outward when demolding, so as to avoid the metal stuck in the exhaust channel after cooling affecting the demolding of the flange. This design not only improves the flange forming quality, but also reduces the scrap rate caused by demolding difficulties; (4) The present invention pushes the unloading drive ring piston and mold rod to reset through the reset spring, so that the mold rod is reinserted into the top mold and the flange is separated by friction. At the same time, the retraction sealing plate automatically returns to its position under the action of magnetic attraction and limiting magnetic block. This reset mechanism reduces the need for manual intervention. Operators only need to control the electric cylinder to complete the entire casting and demolding process, which reduces the complexity of operation. (5) The present invention sets a conveyor belt under the top unloading plate, which can catch the flange separated from the top mold in time and transport it to the designated position, avoiding the disadvantage of traditional casting equipment requiring manual handling of finished products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the bent slide rail groove structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the structure at the vertically defined sliding rod of the present invention.

[0014] Figure 3 This is a schematic diagram of the structure of the sliding sleeve block defined in this invention.

[0015] Figure 4 for Figure 3 Schematic diagram of the structure at point A in the middle.

[0016] Figure 5 This is a schematic diagram of the material feeding pressure chamber structure of the present invention.

[0017] Figure 6 This is a schematic diagram of the mold rod driving piston cylinder structure of the present invention.

[0018] Figure 7 This is a schematic diagram of the top mold structure of the present invention.

[0019] In the diagram: 101-Base; 102-Vertical beam; 103-Reinforcing rib; 104-Vertical limiting slide bar; 105-Horizontal limiting slide bar; 106-Limiting sliding block; 107-Electric cylinder; 108-Supporting vertical plate; 109-Bending slide rail groove; 110-Top unloading plate; 111-Magnetic suction rod; 112-Injection nozzle; 113-Bottom mold base; 114-Bottom mold; 115-Lower half injection channel; 116-Upper half injection channel; 117-Top mold; 118-Retreating slide groove; 119-Retreating sealing plate; 120-Mold rod ; 121-Die rod drive piston; 122-Die rod drive piston cylinder; 123-Limiting magnetic block; 124-Extension rod; 125-Exhaust channel; 126-Discharge pressure chamber; 127-Discharge drive annular piston; 128-Top sealing cover; 129-Push discharge slide rod; 130-Reset spring; 131-First pressure conveying pipe; 132-Second pressure conveying pipe; 133-Discharge pressure chamber support; 134-Passive retraction magnetic block; 135-Sliding tube; 136-Sliding tube support rod; 137-Linkage connecting rod; 138-Guide rod. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-7 The technical solution of the present invention will be further illustrated through specific embodiments.

[0021] This invention provides a rapid casting equipment for valve flanges, including a bottom mold 114 and a top mold 117. A lower half-injection channel 115 and an upper half-injection channel 116 are respectively provided on the mating surfaces of the bottom mold 114 and the top mold 117, forming a complete injection channel. This injection channel is connected to a sprue 112. The top mold 117 also has a relief groove 118, within which a relief sealing plate 119 is slidably disposed. An exhaust channel is formed between the top of the relief sealing plate 119 and the top of the relief groove 118. 125. A limiting magnetic block 123 is fixedly fixed at the position of the retractable sealing plate 119 outside the top mold 117; a mold rod 120 is slidably sealed at the axial position of the top mold 117, and the mold rod 120 contacts and cooperates with the bottom mold 114; it also includes a supporting vertical plate 108, on which a bent slide rail groove 109 is provided, and a guide rod 138 is slidably installed in the bent slide rail groove 109. A discharge pressure chamber bracket 133 is fixedly installed on the guide rod 138, and the discharge pressure chamber bracket 133 is used to drive the top mold 117 to move, so that the formed flange is separated from the top mold 117. The supporting vertical plate 108 is fixedly installed on the base 101, and two parallel reinforcing ribs 103 are fixedly installed on the side of the supporting vertical plate 108. The two reinforcing ribs 103 are fixedly cooperated with the base 101, and two parallel horizontal limiting slide rods 105 are fixedly installed between the two reinforcing ribs 103. A vertical limiting slide rod 104 is slidably arranged between the two horizontal limiting slide rods 105. The two ends of the vertical limiting slide rod 104 are slidably engaged with two horizontal limiting slide rods 105. A limiting sliding sleeve block 106 is also slidably sleeved on the vertical limiting slide rod 104. The limiting sliding sleeve block 106 is fixedly engaged with the guide rod 138. A vertical beam column 102 is also fixedly installed on the base 101. An electric cylinder 107 is movably installed at the top of the vertical beam column 102. The end of the telescopic rod of the electric cylinder 107 is rotatably connected to the guide rod 138 to drive the guide rod 138 to slide in the bent slide rail groove 109.

[0022] A mold rod drive piston cylinder 122 and a discharge pressure chamber 126 are fixedly installed on the top mold 117. The mold rod drive piston cylinder 122 is coaxially arranged inside the discharge pressure chamber 126. The top and bottom ends of the mold rod drive piston cylinder 122 and the discharge pressure chamber 126 are connected through a first pressure conveying pipe 131 and a second pressure conveying pipe 132. The inner wall of the mold rod drive piston cylinder 122 and the inner wall of the unloading pressure chamber 126 are respectively slidably sealed with a mold rod drive piston 121 and an unloading drive annular piston 127. The mold rod drive piston 121 is fixedly engaged with the mold rod 120, and the mold rod 120 is slidably sealed with the mold rod drive piston cylinder 122. At least two unloading push slide rods 129 are fixedly installed on the unloading drive annular piston 127. A top sealing cover 128 is slidably sealed on the two unloading push slide rods 129. The top sealing cover 128 is fixedly sealed with the unloading pressure chamber 126. A return spring 130 is arranged around the circumferential surface of the unloading push slide rod 129. The two ends of the return spring 130 are fixedly engaged with the end of the unloading push slide rod 129 away from the unloading drive annular piston 127 and the top sealing cover 128. An extension rod 124 is fixedly installed on the retraction sealing plate 119. A sliding tube support rod 136 is fixedly installed on the outer surface of the discharge pressure chamber 126. A sliding tube 135 is slidably sleeved on the sliding tube support rod 136. A passive retraction magnetic block 134 is fixedly mounted on the sliding tube 135. The bottom end of the sliding tube 135 and the extension rod 124 are movably connected by a linkage rod 137. The bottom mold 114 is fixedly installed on the base 101 via the bottom mold seat 113. A top discharge plate 110 and a magnetic suction rod 111 are also fixedly installed on the support vertical plate 108. The discharge pressure chamber bracket 133 is fixedly connected to the discharge pressure chamber 126. The top discharge plate 110 is in contact with all the pushing discharge slide rods 129, and the magnetic suction rod 111 is magnetically attracted to the passive retraction magnetic block 134.

[0023] The working principle of the valve flange rapid casting equipment disclosed in this invention is as follows: Molten high-strength, high-toughness, lightweight structural component die-casting aluminum alloy is injected through the injection nozzle 112 into the space formed by the bottom mold 114 and the top mold 117 (heating wires are embedded inside the top mold 117 and the bottom mold 114 to increase the fluidity of the high-strength, high-toughness, lightweight structural component die-casting aluminum alloy), and then allowed to cool. Subsequently, the extension and retraction of the telescopic rod of the electric cylinder 107 is controlled. The electric cylinder 107 drives the guide rod 138 to move along the bent slide rail groove 109, moving the top mold 117 upwards and gradually approaching the top unloading plate 110 (under the restriction of the horizontal limiting slide rod 105 and the vertical limiting slide rod 104 on the limiting sliding sleeve block 106, the guide rod 138 can be kept from rotating during movement, thus ensuring that the axis of the top mold 117 and the unloading pressure chamber 126 is always in a vertical state). During this process, the top mold 117... It will separate from the bottom mold 114, and the top mold 117 also moves along the bent slide rail groove 109. When the top of the push unloading slide rod 129 moves to contact the top unloading plate 110, since the top mold 117 will continue to move, the top sealing cover 128 and the push unloading slide rod 129 will slide relative to each other. The push unloading slide rod 129 pushes the unloading drive annular piston 127 to slide in the unloading pressure chamber 126, so that the inside of the unloading pressure chamber 126 is located within the unloading drive annular piston 127. The pressure above decreases (this part contains hydraulic oil), while the pressure below the unloading drive annular piston 127 increases. The hydraulic oil inside the unloading pressure chamber 126 is forced into the mold rod drive piston cylinder 122 through the second pressure delivery pipe 132, thus pushing the mold rod drive piston 121 to move upward inside the mold rod drive piston cylinder 122. At the same time, the pressure inside the mold rod drive piston cylinder 122 above the mold rod drive piston 121 (this part does not contain hydraulic oil) enters the unloading pressure chamber 126 through the first pressure delivery pipe 131 (causing the pressure inside the mold rod drive piston cylinder 122 above the mold rod drive piston 121 to increase, which is due to the difference in volume between the upper and lower sides of the mold rod drive piston 121. At this time, the gas is in a compressed state. When the unloading drive annular piston 127 is not under force, this pressure can act as the return spring 130). During this process, the mold rod 120 moves together with the mold rod drive piston 121, causing the mold rod 120 to be pulled out from the already formed flange.At the same time, the passively retracting magnetic block 134 will also pass the magnetic suction rod 111. When the passively retracting magnetic block 134 passes the magnetic suction rod 111 (the closest point between the magnetic suction rod 111 and the passively retracting magnetic block 134, during the upward movement period), it will be subjected to the downward magnetic attraction of the magnetic suction rod 111. At this time, the passively retracting magnetic block 134 will drive the sliding tube 135 to slide downward on the sliding tube support rod 136, and then drive the extension rod 124 to move through the linkage rod 137. The extension rod 124 drives the retracting sealing plate 119 to slide in the retracting groove 118, so that the retracting sealing plate 119 slides a small distance outward from the retracting groove 118. This is because when the high strength Molten aluminum alloy for die casting of high-strength, lightweight structural components enters the bottom mold 114 and the top mold 117. Air at the top is discharged through the venting channel 125. Then, a small amount of molten aluminum alloy for die casting of high-strength, lightweight structural components enters the venting channel 125. When the molten aluminum alloy for die casting of high-strength, lightweight structural components cools, it gets stuck in the venting channel 125, affecting the separation of the flange from the top mold 117. Therefore, the relief sealing plate 119 is pulled outward (the top of the relief sealing plate 119 and the relief groove 118 form the venting channel 125, and because the relief sealing plate 119 is located at the bottom, it will block the airflow), to prevent the relief sealing plate 119 from blocking the flange after it has been formed. When the top mold 117 moves downward, the pusher slide 129 will gradually separate from the top unloading plate 110. Under the action of the return spring 130, the pusher slide 129 drives the unloading drive ring piston 127 to move upward in the unloading pressure chamber 126, so that the mold rod 120 is reset. During this process, the mold rod 120 will be reinserted into the top mold 117, and then the flange will be pushed away from the top mold 117 by friction (when the mold rod 120 is pulled out, the flange is not separated from the top mold 117. When the mold rod 120 is reset, due to the error of the hole diameter, the mold rod 120 will push the flange to separate from the top mold 117). Simultaneously, the passively retracting magnetic block 134 will again engage with the magnetic suction rod 111. When the passively retracting magnetic block 134 moves past the magnetic suction rod 111, it will be subjected to an upward magnetic pull from the magnetic suction rod 111. Then, through the sliding tube 135, it will pull the linkage rod 137. The linkage rod 137 will drive the extension rod 124 and the retracting sealing plate 119 to re-insert into the retracting groove 118 (the limiting magnetic block 123 has a magnetic force with the outer surface of the top mold 117, which activates the effect of fixing the retracting sealing plate 119. The limiting magnetic block 123 is also used to constrain the position of the retracting sealing plate 119 inside the retracting groove 118). A conveyor belt is set below the top unloading plate 110 to catch the flange falling from the top mold 117 and then transport it to the designated position.

Claims

1. A rapid casting equipment for valve flanges, characterized in that: The mold includes a bottom mold (114) and a top mold (117). The bottom mold (114) and the top mold (117) are respectively provided with a lower half injection channel (115) and an upper half injection channel (116). The lower half injection channel (115) and the upper half injection channel (116) constitute a complete injection channel. The injection channel is connected to the injection nozzle (112). The top mold (117) is also provided with a relief groove (118). A relief sealing plate (119) is slidably arranged in the relief groove (118). An exhaust channel (125) is formed between the top of the relief sealing plate (119) and the top of the relief groove (118). A limit magnetic block (123) is fixed at the position of the relief sealing plate (119) outside the top mold (117). The top mold (117) is provided with a sliding seal at the axial position of the mold rod (120), and the mold rod (120) is in contact with the bottom mold (114); It also includes a supporting vertical plate (108), on which a bent slide rail groove (109) is provided, and a guide rod (138) is slidably installed in the bent slide rail groove (109). A feeding pressure chamber bracket (133) is fixedly installed on the guide rod (138). The feeding pressure chamber bracket (133) is used to drive the top mold (117) to move, so that the formed flange is separated from the top mold (117). A mold rod drive piston cylinder (122) and a discharge pressure chamber (126) are fixedly installed on the top mold (117). The mold rod drive piston cylinder (122) is coaxially arranged inside the discharge pressure chamber (126). The top and bottom ends of the mold rod drive piston cylinder (122) and the discharge pressure chamber (126) are connected through a first pressure conveying pipe (131) and a second pressure conveying pipe (132). The inner wall of the mold rod drive piston cylinder (122) and the inner wall of the discharge pressure chamber (126) are respectively slidably sealed with a mold rod drive piston (121) and a discharge drive annular piston (127). The mold rod drive piston (121) is fixedly engaged with the mold rod (120), and the mold rod (120) is slidably sealed with the mold rod drive piston cylinder (122). At least two push discharge slide rods (129) are fixedly installed on the discharge drive annular piston (127). Two push-feed slide rods (129) are equipped with top sealing covers (128) on sliding sealing sleeves. The top sealing covers (128) are fixedly sealed with the feeding pressure chamber (126). A return spring (130) is arranged around the circumferential surface of the push-feed slide rod (129). The two ends of the return spring (130) are fixedly fitted with the end of the push-feed slide rod (129) away from the feeding drive annular piston (127) and the top sealing cover (128). An extension rod (124) is fixedly installed on the retraction sealing plate (119). A sliding tube support rod (136) is fixedly installed on the outer surface of the feeding pressure chamber (126). A sliding tube (135) is slidably sleeved on the sliding tube support rod (136). A passive retraction magnet (134) is fixedly arranged on the sliding tube (135). The bottom end of the sliding tube (135) and the extension rod (124) are movably connected by a linkage rod (137).

2. The valve flange rapid casting equipment according to claim 1, characterized in that: A vertical support plate (108) is fixedly installed on a base (101). Two parallel reinforcing ribs (103) are fixedly installed on the side of the vertical support plate (108). The two reinforcing ribs (103) are fixedly engaged with the base (101). Two parallel horizontal limiting slide rods (105) are fixedly installed between the two reinforcing ribs (103). A vertical limiting slide rod (104) is slidably arranged between the two horizontal limiting slide rods (105).

3. The valve flange rapid casting equipment according to claim 2, characterized in that: The two ends of the vertical limiting slide bar (104) are slidably engaged with two horizontal limiting slide bars (105). A limiting sliding sleeve block (106) is also slidably sleeved on the vertical limiting slide bar (104). The limiting sliding sleeve block (106) is fixedly engaged with the guide rod (138). A vertical beam column (102) is also fixedly installed on the base (101). An electric cylinder (107) is movably installed at the top of the vertical beam column (102). The end of the telescopic rod of the electric cylinder (107) is rotatably connected to the guide rod (138) to drive the guide rod (138) to slide in the bent slide rail groove (109).

4. The valve flange rapid casting equipment according to claim 3, characterized in that: The bottom mold (114) is fixedly installed on the base (101) via the bottom mold seat (113). The top unloading plate (110) and magnetic suction rod (111) are also fixedly installed on the vertical support plate (108). The unloading pressure chamber bracket (133) and the unloading pressure chamber (126) are fixedly connected.

5. The valve flange rapid casting equipment according to claim 4, characterized in that: The top unloading plate (110) is in contact with all the push unloading slide bars (129), and the magnetic suction bar (111) is in magnetic attraction with the passive retraction magnetic block (134).

Images