Quick casting equipment for valve flange

Abstract

The invention discloses quick casting equipment for a valve flange, and relates to the technical field of flange production. The die comprises a bottom die and a top die, and a high-toughness light-weight structural part die-casting aluminum alloy molten metal is injected through an injection nozzle to form a flange. The top mold is provided with a receding sealing plate and an exhaust channel, automatic displacement is achieved through magnetic linkage, and the situation that demolding is affected by metal clamping stagnation is avoided; the die rod is driven by a hydraulic system and matched with the discharging pressure cavity to achieve automatic drawing-out and resetting, and the flange is pushed to be separated. The electric cylinder drives the guide rod to move along the bending sliding rail groove, stable lifting of the top mold is guaranteed, and the horizontal and vertical limiting sliding rods guarantee movement precision. The top discharging plate is integrated with the conveying belt, and automatic discharging and conveying of the flanges are completed. According to the equipment, the casting process is optimized through automatic design, the production efficiency and the forming quality are improved, the manual operation difficulty is reduced, and the equipment is suitable for efficient and stable flange production requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of flange production, and specifically to a rapid casting device for valve flanges. Background Art

[0002] In traditional valve flange casting equipment, a simple die casting process is usually adopted. The bottom die and the top die are docked manually or semi-automatically. After the molten metal of high-strength, tough and lightweight structural die-cast aluminum alloy is injected, it cools and forms. Subsequently, the die is separated and the flange is taken out by relying on manual labor or basic mechanical devices. However, this process has significant disadvantages: Firstly, the die separation and flange demoulding processes rely on manual operation or simple machinery, with low efficiency, and it is easy to damage the die due to improper operation, affecting the service life of the equipment. Secondly, the traditional equipment lacks an effective exhaust design. When the molten metal of high-strength, tough and lightweight structural die-cast aluminum alloy is injected, it is difficult for air to be discharged. After cooling, there is often a small amount of metal remaining at the exhaust port, resulting in difficult demoulding and defects easily appearing on the surface of the finished product. In addition, after demoulding, the traditional equipment requires manual resetting of the die and handling of the finished product, with cumbersome operations and high labor intensity, making it difficult to meet the requirements of modern continuous production. Finally, the existing technology lacks an automated integrated design, and the production process is fragmented, making it difficult to achieve efficient and stable casting of high-strength, tough and lightweight structural die-cast aluminum alloy flanges. Summary of the Invention

[0003] To overcome the defects of the above-mentioned prior art, the present invention provides the following technical solution: A rapid casting device for valve flanges, including a bottom die and a top die. On the docking surfaces of the bottom die and the top die, a lower half injection channel and an upper half injection channel are respectively arranged. The lower half injection channel and the upper half injection channel form a complete injection channel, and this injection channel is communicated with a feeding nozzle. Among them, a retracting chute is also opened on the top die, and a retracting sealing plate is slidably arranged in the retracting chute. An exhaust channel is formed between the top of the retracting sealing plate and the top of the retracting chute. A limiting magnet is fixed at the position of the retracting sealing plate outside the top die; a die rod is slidably and sealingly arranged at the axial center position of the top die, and the die rod is in contact and cooperation with the bottom die; a supporting vertical plate is also included. A bent slide rail groove is arranged on the supporting vertical plate, and a guiding rod is slidably installed in the bent slide rail groove. A blanking pressure chamber bracket is fixedly installed on the guiding rod, and the blanking pressure chamber bracket is used to drive the top die to move, so that the formed flange is separated from the top die.

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

[0005] Preferably, both ends of the vertically defined sliding rod are slidably engaged with two horizontally defined sliding rods. A defined sliding sleeve block is also slidably sleeved on the vertically defined sliding rod. The defined sliding sleeve block is fixedly engaged with the guiding rod. A vertical beam column is also fixedly installed on the base. An electric cylinder is movably installed at the top end of the vertical beam column. The end of the telescopic rod of the electric cylinder is rotatably connected to the guiding rod, and is used to drive the guiding rod to slide in the bent slide rail groove.

[0006] Preferably, a die rod driving piston cylinder and a blanking pressure chamber are fixedly installed on the top die. The die rod driving piston cylinder is coaxially arranged inside the blanking pressure chamber. The top and bottom inside the die rod driving piston cylinder and the blanking pressure chamber are communicated through a first pressure conveying pipe and a second pressure conveying pipe.

[0007] Preferably, a die rod driving piston and a blanking driving annular piston are respectively slidably and sealingly arranged on the inner wall of the die rod driving piston cylinder and the inner wall of the blanking pressure chamber. The die rod driving piston is fixedly engaged with the die rod. The die rod is slidably and sealingly engaged with the die rod driving piston cylinder. At least two blanking pushing sliding rods are fixedly installed on the blanking driving annular piston. A top sealing cover is slidably and sealingly sleeved on the two blanking pushing sliding rods. The top sealing cover is fixedly and sealingly engaged with the blanking pressure chamber. A return spring is arranged around the circumferential surface of the blanking pushing sliding rod. Both ends of the return spring are fixedly engaged with the end of the blanking pushing sliding rod away from the blanking driving annular piston and the top sealing cover.

[0008] Preferably, an extension rod is fixedly installed on the retractable sealing plate. A sliding pipe support rod is fixedly installed on the outer surface of the blanking pressure chamber. A sliding pipe is slidably sleeved on the sliding pipe support rod. A passive retractable magnetic block is fixedly arranged on the sliding pipe. The bottom end of the sliding pipe and the extension rod are movably connected through a linkage connecting rod.

[0009] Preferably, the bottom die is fixedly installed on the base through a bottom die seat. A top unloading plate and a magnetic attraction rod are also fixedly installed on the supporting vertical plate. The blanking pressure chamber support and the blanking pressure chamber are fixedly connected.

[0010] Preferably, the top unloading plate is in contact engagement with all the blanking pushing sliding rods. The magnetic attraction rod is in magnetic attraction engagement with the passive retractable magnetic block.

[0011] The present invention has the following beneficial effects compared with the prior art: (1) The device of the present invention drives the guide rod to move along the bending slide rail groove through the electric cylinder, drives the top die and the bottom die to separate, and uses the hydraulic linkage design of the blanking pressure chamber and the die rod to drive the piston cylinder, so that the die rod automatically extracts the formed flange, and at the same time pushes the blanking slide rod to cooperate with the top discharge plate to complete the separation of the flange. This automated design avoids the cumbersome operation of traditional manual separation, greatly shortens the production cycle, improves the casting efficiency of valve flanges, and is especially suitable for mass production requirements; (2) The present invention adopts the structure of a horizontal limiting slide rod and a vertical limiting slide rod to cooperate to limit the sliding sleeve block, ensuring that the guide rod does not rotate when moving in the bending slide rail groove, and keeping the axes of the top die and the blanking pressure chamber always perpendicular; (3) The top die of the present invention is provided with a retractable slide groove and a retractable sealing plate, discharges the air when injecting the die-casting aluminum alloy melt of the high-strength, tough and lightweight structural part through the exhaust passage, and uses the magnetic force linkage of the passive retractable magnetic block and the magnetic attraction rod to make the retractable sealing plate automatically move outwards during demoulding, avoiding the metal stuck in the exhaust passage after cooling from affecting the demoulding of the flange. This design not only improves the forming quality of the flange, but also reduces the scrap rate caused by difficult demoulding; (4) The present invention pushes the blanking drive annular piston and the die rod to reset through the return spring, makes the die rod reinsert into the top die and completes the separation of the flange through friction, and at the same time the retractable sealing plate automatically returns to its position under the action of magnetic attraction and the limit magnetic block. This reset mechanism reduces the need for manual intervention, and the operator only needs to control the electric cylinder to complete the entire casting and demoulding process, reducing the operation complexity; (5) The present invention is provided with a conveyor belt under the top discharge plate, which can timely catch the flange separated from the top die and convey it to the designated position, avoiding the disadvantage of traditional casting equipment that requires manual handling of finished products. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the bending slide rail groove of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the vertical limiting slide rod of the present invention.

[0014] Figure 3 It is a schematic structural diagram of the limiting sliding sleeve block of the present invention.

[0015] Figure 4 is Figure 3 the schematic structural diagram of part A in

[0016] Figure 5 It is a schematic structural diagram of the blanking pressure chamber of the present invention.

[0017] Figure 6 It is a schematic structural diagram of the die rod driving the piston cylinder of the present invention.

[0018] Figure 7 It is a schematic structural diagram of the top die of the present invention.

[0019] In the figure: 101 - base; 102 - vertical beam column; 103 - reinforcing rib; 104 - vertical limiting slide bar; 105 - horizontal limiting slide bar; 106 - limiting sliding sleeve block; 107 - electric cylinder; 108 - supporting vertical plate; 109 - bent slide rail groove; 110 - top discharge plate; 111 - magnetic attraction 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 - retracting slide groove; 119 - retracting sealing plate; 120 - mold rod; 121 - mold rod driving piston; 122 - mold rod driving piston cylinder; 123 - limiting magnetic block; 124 - extension rod; 125 - exhaust channel; 126 - blanking pressure chamber; 127 - blanking driving annular piston; 128 - top sealing cover; 129 - push blanking slide rod; 130 - reset spring; 131 - first pressure delivery pipe; 132 - second pressure delivery pipe; 133 - blanking pressure chamber support; 134 - passive retracting magnetic block; 135 - sliding pipe; 136 - sliding pipe support rod; 137 - linkage connecting rod; 138 - guiding rod. Specific embodiments

[0020] The following combines with the attached Figure 1-7 , and further illustrates the technical solution of the present invention through specific embodiments.

[0021] The present invention provides a rapid casting device for valve flanges, which includes a bottom mold 114 and a top mold 117. On the docking surfaces of the bottom mold 114 and the top mold 117, a lower half injection channel 115 and an upper half injection channel 116 are respectively arranged. The lower half injection channel 115 and the upper half injection channel 116 form a complete injection channel, and this injection channel is communicatively arranged with a feeding nozzle 112. Among them, a retraction sliding groove 118 is also opened on the top mold 117, and a retraction sealing plate 119 is slidably arranged in the retraction sliding groove 118. An exhaust channel 125 is formed between the top of the retraction sealing plate 119 and the top of the retraction sliding groove 118. A limiting magnet 123 is fixed at the position of the retraction sealing plate 119 outside the top mold 117; a mold rod 120 is slidably and sealingly arranged at the axial center position of the top mold 117, and the mold rod 120 is in contact and cooperation with the bottom mold 114; it also includes a support vertical plate 108. A bent slide rail groove 109 is arranged on the support vertical plate 108, and a guiding rod 138 is slidably installed in the bent slide rail groove 109. A blanking pressure chamber bracket 133 is fixedly installed on the guiding rod 138, and the blanking 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 support vertical plate 108 is fixedly installed on a base 101. Two parallel reinforcing ribs 103 are fixedly installed on the side surface of the support vertical plate 108. The two reinforcing ribs 103 are fixedly cooperated 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. Both ends of the vertical limiting slide rod 104 are slidably cooperated with the two horizontal limiting slide rods 105. Among them, a limiting sliding sleeve block 106 is also slidably sleeved on the vertical limiting slide rod 104, and the limiting sliding sleeve block 106 is fixedly cooperated with the guiding rod 138. A vertical beam column 102 is also fixedly installed on the base 101. The top end of the vertical beam column 102 is movably installed with an electric cylinder 107, and the end of the telescopic rod of the electric cylinder 107 is rotatably connected to the guiding rod 138 for driving the guiding rod 138 to slide in the bent slide rail groove 109.

[0022] The die rod driving piston cylinder 122 and the blanking pressure chamber 126 are fixedly installed on the top die 117. Among them, the die rod driving piston cylinder 122 is coaxially arranged inside the blanking pressure chamber 126. The top and bottom inside the die rod driving piston cylinder 122 and the blanking pressure chamber 126 are communicated through the first pressure delivery pipe 131 and the second pressure delivery pipe 132. A die rod driving piston 121 and a blanking driving annular piston 127 are respectively arranged in a sliding and sealing manner on the inner walls of the die rod driving piston cylinder 122 and the blanking pressure chamber 126. Among them, the die rod driving piston 121 is fixedly matched with the die rod 120. The die rod 120 is in sliding and sealing cooperation with the die rod driving piston cylinder 122. At least two pushing blanking slide rods 129 are fixedly installed on the blanking driving annular piston 127. A top sealing cover 128 is sleeved on the two pushing blanking slide rods 129 in a sliding and sealing manner. The top sealing cover 128 is fixedly and sealingly matched with the blanking pressure chamber 126. A return spring 130 is arranged in a surrounding manner on the circumferential surface of the pushing blanking slide rod 129. The two ends of the return spring 130 are fixedly matched with the end of the pushing blanking slide rod 129 far away from the blanking driving annular piston 127 and the top sealing cover 128. An extension rod 124 is fixedly installed on the retreating sealing plate 119. A sliding pipe support rod 136 is fixedly installed on the outer surface of the blanking pressure chamber 126. A sliding pipe 135 is sleeved on the sliding pipe support rod 136 in a sliding manner. A passive retreating magnetic block 134 is fixedly arranged on the sliding pipe 135. The bottom end of the sliding pipe 135 and the extension rod 124 are movably connected through a linkage connecting rod 137. The bottom die 114 is fixedly installed on the base 101 through a bottom die seat 113. A top unloading plate 110 and a magnetic attraction rod 111 are also fixedly installed on the support vertical plate 108. The blanking pressure chamber support 133 is fixedly connected with the blanking pressure chamber 126. The top unloading plate 110 is in contact and cooperation with all the pushing blanking slide rods 129. The magnetic attraction rod 111 is in magnetic attraction cooperation with the passive retreating magnetic block 134.

[0023] The working principle of a rapid casting device for valve flanges disclosed in the present invention is as follows: The molten metal liquid of high-strength, tough, and lightweight structural die-cast aluminum alloy is injected through the injection nozzle 112 into the space formed by the bottom die 114 and the top die 117 (heating wires are embedded inside the top die 117 and the bottom die 114, which can increase the fluidity of the high-strength, tough, and lightweight structural die-cast aluminum alloy molten liquid), and then wait for cooling. Subsequently, control the telescopic movement of the telescopic rod of the electric cylinder 107. The electric cylinder 107 drives the guiding rod 138 to move along the bent slide rail groove 109, moving the top die 117 upward and gradually approaching the top discharge 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, it can be ensured that the guiding rod 138 will not rotate during the movement, which also ensures that the axes of the top die 117 and the blanking pressure chamber 126 are always in a vertical state). During this process, the top die 117 will separate from the bottom die 114, and at the same time, the top die 117 also moves along the bent slide rail groove 109. When the top of the blanking slide rod 129 moves to contact the top discharge plate 110, since the top die 117 will continue to move, a relative sliding will occur between the top seal cover 128 and the blanking slide rod 129 at this time. The blanking slide rod 129 pushes the blanking driving annular piston 127 to slide inside the blanking pressure chamber 126, causing the pressure above the blanking driving annular piston 127 inside the blanking pressure chamber 126 to decrease (hydraulic oil is provided inside this part), and the pressure below the blanking driving annular piston 127 to increase. The hydraulic oil inside the blanking pressure chamber 126 is squeezed into the die rod driving piston cylinder 122 through the second pressure delivery pipe 132, and then pushes the die rod driving piston 121 to move upward inside the die rod driving piston cylinder 122. At the same time, the pressure above the die rod driving piston 121 inside the die rod driving piston cylinder 122 (there is no hydraulic oil in this part) will enter the blanking pressure chamber 126 through the first pressure delivery pipe 131 (causing the pressure above the die rod driving piston 121 inside the die rod driving piston cylinder 122 to increase, which is caused by the different volumes on both sides of the die rod driving piston 121. At this time, the gas is in a compressed state. When the blanking driving annular piston 127 is not subjected to force, this part of the pressure can act as the reset spring 130). During this process, the die rod 120 will move together with the die rod driving piston 121, causing the die rod 120 to be withdrawn from the already formed flange.Meanwhile, the passive retractable magnet 134 will also pass by the magnetic attraction rod 111. When the passive retractable magnet 134 crosses the magnetic attraction rod 111 (the position where the magnetic attraction rod 111 is closest to the passive retractable magnet 134, during the upward movement period), it will be subjected to a downward magnetic attraction force from the magnetic attraction rod 111. At this time, the passive retractable magnet 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 retractable sealing plate 119 to slide in the retractable chute 118, causing the retractable sealing plate 119 to slide outward a short distance from the retractable chute 118. This is because when the die-casting aluminum alloy melt of the high-strength, tough, and lightweight structural part enters the bottom die 114 and the top die 117, the air at the top will be discharged through the exhaust passage 125, and then a small amount of die-casting aluminum alloy melt of the high-strength, tough, and lightweight structural part will enter the exhaust passage 125. When the die-casting aluminum alloy melt of the high-strength, tough, and lightweight structural part cools, it will get stuck in the exhaust passage 125, affecting the separation of the flange from the top die 117. Therefore, the retractable sealing plate 119 is pulled outwards (the top of the retractable sealing plate 119 and the retractable chute 118 form the exhaust passage 125, and since the retractable sealing plate 119 is in the lower position, it will block), preventing the retractable sealing plate 119 from blocking the formed flange. When the top die 117 moves downward, the pushing and feeding slide rod 129 will gradually separate from the top unloading plate 110. Under the action of the reset spring 130, the pushing and feeding slide rod 129 drives the feeding drive annular piston 127 to move upward in the feeding pressure chamber 126, causing the die rod 120 to reset. During this process, the die rod 120 will re-insert into the top die 117, and then push the flange to separate from the top die 117 through friction (when the die rod 120 is pulled out, the flange does not separate from the top die 117. When the die rod 120 resets, due to the aperture error, the die rod 120 will push the flange to separate from the top die 117). At the same time, the passive retractable magnet 134 will cooperate with the magnetic attraction rod 111 again. When the passive retractable magnet 134 moves past the magnetic attraction rod 111, it will be subjected to an upward magnetic attraction force from the magnetic attraction rod 111, and then pull the linkage rod 137 through the sliding tube 135. The linkage rod 137 drives the extension rod 124 and the retractable sealing plate 119 to re-insert into the retractable chute 118 (there is a magnetic force between the limiting magnet 123 and the outer surface of the top die 117, which has the effect of fixing the retractable sealing plate 119, and the limiting magnet 123 is also used to restrict the position of the retractable sealing plate 119 inside the retractable chute 118). A conveyor belt is arranged below the top unloading plate 110 to catch the flange that falls from the top die 117 and then convey it to the designated position.

Claims

1. A rapid casting device for valve flanges, characterized in that: It includes a bottom mold (114) and a top mold (117). Lower half injection channels (115) and upper half injection channels (116) are respectively arranged on the docking surfaces of the bottom mold (114) and the top mold (117). The lower half injection channels (115) and the upper half injection channels (116) form a complete injection channel, and this injection channel is communicated with a pouring nozzle (112). Wherein, a retracting chute (118) is also opened on the top mold (117), and a retracting sealing plate (119) is slidably arranged in the retracting chute (118). An exhaust channel (125) is formed between the top of the retracting sealing plate (119) and the top of the retracting chute (118). A limiting magnetic block (123) is fixed at the position of the retracting sealing plate (119) outside the top mold (117); A mold rod (120) is slidably sealed at the axial center position of the top mold (117), and the mold rod (120) is in contact and cooperation with the bottom mold (114). It also includes a supporting vertical plate (108). A bent slide rail groove (109) is arranged on the supporting vertical plate (108). A guiding rod (138) is slidably installed in the bent slide rail groove (109). A blanking pressure chamber bracket (133) is fixedly installed on the guiding rod (138). The blanking 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).

2. The valve flange rapid casting equipment according to claim 1, characterized in that: The supporting vertical plate (108) is fixedly installed on a base (101). Two parallel reinforcing ribs (103) are fixedly installed on the side surface of the supporting vertical plate (108). The two reinforcing ribs (103) are fixedly matched 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 rod (104) are slidably matched with the 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 matched with the guiding 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 end of the vertical beam column (102). The end of the telescopic rod of the electric cylinder (107) is rotatably connected to the guiding rod (138) for driving the guiding 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: A mold rod driving piston cylinder (122) and a blanking pressure chamber (126) are fixedly installed on the top mold (117). Wherein, the mold rod driving piston cylinder (122) is coaxially arranged inside the blanking pressure chamber (126). The top and bottom inside the mold rod driving piston cylinder (122) and the blanking pressure chamber (126) are communicated through a first pressure delivery pipe (131) and a second pressure delivery pipe (132).

5. The quick casting equipment for valve flanges according to claim 4, characterized in that: The inner wall of the die rod driving piston cylinder (122) and the inner wall of the blanking pressure chamber (126) are respectively provided with a die rod driving piston (121) and a blanking driving annular piston (127) in sliding seal. The die rod driving piston (121) is fixedly fitted with the die rod (120), and the die rod (120) is in sliding seal fit with the die rod driving piston cylinder (122). At least two blanking pushing slide rods (129) are fixedly installed on the blanking driving annular piston (127). A top sealing cover (128) is sleeved on the two blanking pushing slide rods (129) in sliding seal. The top sealing cover (128) is fixedly and sealingly fitted with the blanking pressure chamber (126). A return spring (130) is disposed around the circumferential surface of the blanking pushing slide rod (129). The two ends of the return spring (130) are fixedly fitted with the end of the blanking pushing slide rod (129) far away from the blanking driving annular piston (127) and the top sealing cover (128).

6. The valve flange rapid casting equipment according to claim 5, characterized in that: An extension rod (124) is fixedly installed on the retractable sealing plate (119). A sliding pipe support rod (136) is fixedly installed on the outer surface of the blanking pressure chamber (126). A sliding pipe (135) is sleeved on the sliding pipe support rod (136) in sliding. A passive retractable magnetic block (134) is fixedly arranged on the sliding pipe (135). The bottom end of the sliding pipe (135) and the extension rod (124) are movably connected through a linkage rod (137).

7. The valve flange rapid casting equipment according to claim 6, characterized in that: The bottom die (114) is fixedly installed on the base (101) through the bottom die seat (113). A top unloading plate (110) and a magnetic attraction rod (111) are also fixedly installed on the support vertical plate (108). The blanking pressure chamber support (133) is fixedly connected with the blanking pressure chamber (126).

8. The quick casting equipment for valve flanges according to claim 7, characterized in that: The top unloading plate (110) is in contact fit with all the blanking pushing slide rods (129), and the magnetic attraction rod (111) is in magnetic attraction fit with the passive retractable magnetic block (134).

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