Pipe casting mold for cast iron drain pipe and using method of pipe casting mold

Abstract

The invention relates to the technical field of pipe casting molds, and discloses a pipe casting mold for a cast iron drainage pipe and a using method thereof.The pipe casting mold comprises a main body and two rotating wheel devices fixedly connected to the inner wall of the main body, and further comprises a pipe mold mechanism arranged in the main body and comprising two contact rotating rings; and the two contact rotating rings are rotationally connected between the two groups of rotating wheel devices respectively. According to the device, a worker can move an annular blocking plate out of a closed groove at a distance, then enters a pipe body through a material taking supporting frame to take the pipe body out of an inner pipe mold, the worker can detach the annular blocking plate out of the closed groove at the distance, and the safety of the device in the annular blocking plate detaching process is improved; according to the device, the annular blocking plate can be directly detached after the drain pipe is formed, the step of cooling the surface of the die is reduced, the production time of the drain pipe is shortened, the production forming efficiency of the integrated pipe die is improved, and the practicability of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cast pipe moulds, in particular to a cast pipe mould for a cast iron drainage pipe and a use method thereof. Background Art

[0002] Centrifugal casting is a technique and method of injecting liquid metal into a high-speed rotating mold, so that the molten metal fills the mold and forms a casting under the action of centrifugal force. When producing centrifugal casting pipes, end caps need to be installed at both ends of the mold to seal the molten iron so that the molten iron solidifies in the mold to form a cast pipe. The current centrifugal casting pipe mold is formed by integral processing, and the left and right ends of the pipe mold are consistent in shape and size, which is suitable for use in centrifuges with manual plugging plates.

[0003] Generally, after the cast iron drain pipe is formed, workers need to manually remove the plugging plate at one end of the cast pipe mold, so as to facilitate the removal of the formed drain pipe inside the cast pipe mold from the mold by machine. During use, the surface of the cast pipe mold will transfer heat to the cast pipe mold due to the molten iron, resulting in too high a surface temperature of the cast pipe mold. Generally, after the pipe body is formed, the pipe mold is allowed to stand still. After the pipe mold cools down to a certain temperature, the workers remove the plugging plate at one end of the pipe mold. After the integrated pipe mold forms the drain pipe, the pipe mold will not be able to quickly perform the next centrifugal forming while it is standing still, which greatly affects the production and forming efficiency of the integrated pipe mold and has low practicality. Summary of the invention

[0004] The object of the present invention is to provide a pipe casting mold for a cast iron drainage pipe and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a pipe casting mold for a cast iron drainage pipe, comprising a main body and two sets of runner devices, both of which are fixedly connected to the inner wall of the main body, and further comprising: The tube mold mechanism is arranged inside the main body, and includes two contact rotating rings, which are respectively rotatably connected between the two sets of rotating wheel devices, and the inner walls of the two contact rotating rings are fixedly connected with the inner tube mold, and the outer wall of the inner tube mold is provided with a plurality of sliding holes, and the left and right sides of the plurality of sliding holes are penetrated with movable grooves, and the right side of the inner tube mold is provided with a closed groove, and the right side of the closed groove is fixedly connected with a sliding rotating frame; A pushing mechanism is arranged inside the plurality of movable grooves, and includes a drag slide cylinder, which is slidably connected to the outer wall of the inner tube mold, and a plurality of sliding push strips are fixedly connected to the inner wall of the inner tube mold; The clamping mechanism is arranged at one end of the sliding push bar away from the dragging slide cylinder. The clamping mechanism includes a plurality of clamping blocks, which are respectively rotatably connected to one end of the sliding push bar away from the dragging slide cylinder.

[0006] Furthermore, the front and back sides of the main body are fixedly connected with support slides, the bottom of the support slides are slidably connected to the inside of the slide rail frame, the side of the main body close to the closed groove is fixedly connected to a limited exit frame, the bottom of the main body is fixedly connected to two limited slide slot frames, and a slide slot is opened at the central axis of the bottom of the main body.

[0007] Furthermore, the tube mold mechanism also includes a plurality of through slide grooves, all of which are penetrated through the outer wall of a contact swivel ring near the closed groove, the sliding hole is connected to the movable groove, a strip sliding hole is opened on the outer wall of the sliding rotating frame, and a rounded corner is provided on the same side of the inner tube mold as the closed groove.

[0008] Furthermore, the clamping mechanism also includes a plurality of sliding bars, which are respectively slidably connected in the through sliding grooves, a side of the sliding bars away from the closed groove is fixedly connected to a limiting ring, a side of the sliding bar away from the limiting ring is rotatably connected to a matching transfer bar, and a side of the matching transfer bar away from the sliding bar is rotatably connected to a right-angle extension frame.

[0009] Furthermore, the bottom of the right-angle extension frame is fixedly connected to the top of the clamping block, two tension springs are fixedly connected between a contact swivel near the closed groove and a side of the matching adapter strip near the right-angle extension frame, an annular blocking plate is slidably connected inside the closed groove, a rotating frame is fixedly connected to the outer wall of the annular blocking plate and a portion corresponding to the sliding rotating frame, the rotating frame is slidably connected to the inside of the strip sliding hole on the annular blocking plate, and a control connecting plate is fixedly connected to the side of the rotating frame away from the annular blocking plate.

[0010] Furthermore, the pushing mechanism also includes a plurality of transfer push frames, which are respectively fixedly connected to the side of the plurality of sliding push bars away from the clamping block, the transfer push frames, the sliding push bars are slidably connected to the inside of the movable groove, the connection between the drag slide and the sliding push bars is slidably connected to the inside of the sliding hole, the end of the transfer push frame away from the drag slide is fixedly connected with a push plate, the push plate is slidably connected to the inner wall of the inner tube mold, and the end of the outer wall of the transfer push frame away from the drag slide slides and slides through the side of the inner tube mold away from the closed groove.

[0011] Furthermore, an abutment mechanism is provided on the outer wall of the dragging slide, which includes a rotating drum, which is rotatably connected to the outer wall of the dragging slide, and a sliding connection frame is fixedly connected to the bottom of the rotating drum, and extrusion push columns are slidably connected to the left and right sides of the sliding connection frame. The extrusion push columns slide through the sliding connection frame, and the side of the extrusion push column away from the closed groove is rotatably connected to two limiting extension strips.

[0012] Furthermore, a strong return spring is fixedly connected between the side of the extrusion push column close to the limit extension strip and the sliding connection frame, the ends of the tops of the two limit extension bars away from the extrusion push column are respectively slidably connected to the insides of the two limit slide slot frames, the ends of the bottoms of the two limit extension bars away from the extrusion push column are rotatably connected to extension bars, the ends of the extension bars away from the limit extension bars are rotatably connected to the outer wall of the sliding connection frame, and the sliding connection frame slides through the slide slot.

[0013] A method for using a cast pipe mold for a cast iron drainage pipe comprises the following steps: S1: The inner tube mold is driven to rotate inside the main body by connecting the wheel device inside the main body with the contact swivel. During the rotation of the inner tube mold, the molten iron pipeline is extended into the inner tube mold to evenly add the molten iron into the inner tube mold; S2: The rotating wheel device is used to increase the rotation speed, driving the inner tube mold to rotate centrifugally inside the main body, so that the molten iron inside the inner tube mold covers the inner wall of the inner tube mold. During the rotation process, the molten iron will gradually cool down and take shape; S3: During the movement of the main body, the extrusion push column will abut against the inner wall of the external active cavity, so that the extrusion push column will slide inside the sliding connection frame, and the extrusion push column will drive the two limit extension bars near one end of the sliding connection frame to rotate, so that the angle between the two limit extension bars is gradually reduced, so that the end of the limit extension bar away from the extrusion push column slides inside the limit slide slot frame, thereby driving the angle between the two extension bars to decrease, and pushing the sliding connection frame to slide inside the slide slot; S4: The rotating cylinder drives the sliding cylinder to slide on the outer wall of the inner tube mold, and the pushing mechanism can be automatically driven to slide on the outer wall of the inner tube mold during the movement of the main body toward the material taking device, so that the pressing block is automatically moved out of the closed groove; S5: The worker uses a tool to push the control connecting plate downward to make the annular plugging plate rotate inside the sliding rotating frame, thereby separating the annular plugging plate from the end face of the tube body, so that the worker can move the annular plugging plate out of the closed groove at a distance, and then enter the tube body through the material taking support frame to take the tube body out of the inner tube mold.

[0014] The present invention has the following beneficial effects: (1) The present invention avoids affecting the rotation of the inner tube mold by connecting the rotating drum with the drag slide. When the drag slide slides on the outer wall of the inner tube mold, it drives the connection between the drag slide and the sliding push strip to slide inside the sliding hole, thereby driving multiple sliding push strips to push the clamping block out of the closed groove, causing the annular blocking plate to lose its squeezing force. In the process of pushing the clamping block out of the closed groove, the push plate is driven from the other end through the transfer push frame to push the tube body formed inside the inner tube mold toward one side of the limit outlet frame, so that the right-angle extension frame can be pushed outward inside the sliding rotating frame through the rotating frame, and then the worker can use a tool to push the tube body out of the inner tube mold. Pushing the control connecting plate downward causes the annular plugging plate to rotate inside the sliding rotating frame, thereby separating the annular plugging plate from the end face of the pipe body, so that workers can move the annular plugging plate out of the closed groove at a distance, and then enter the pipe body through the material taking support bracket to take the pipe body out of the inner pipe mold, so that workers can remove the annular plugging plate from the closed groove at a distance, thereby improving the safety of the device when disassembling the annular plugging plate, and allowing the device to directly disassemble the annular plugging plate after the drainage pipe is formed, thereby reducing the steps of cooling the mold surface, reducing the production time of the drainage pipe, improving the production and molding efficiency of the integrated pipe mold, and increasing the practicality of the device.

[0015] (2) The present invention connects the wheel device inside the main body with the contact swivel to drive the inner tube mold to rotate inside the main body. During the rotation of the inner tube mold, the molten iron pipeline is extended into the inner tube mold, and the molten iron is evenly added to the inner tube mold. The rotation speed is then increased by the wheel device to drive the inner tube mold to rotate centrifugally inside the main body, so that the molten iron inside the inner tube mold covers the inner wall of the inner tube mold. During the rotation, the molten iron will gradually cool and take shape, and then the slide groove will be driven to slide by the external hydraulic device, thereby driving the main body to move in the direction of the material taking device. During the movement, the extrusion push column will be against the inner wall of the external active cavity, so that the extrusion push column slides inside the sliding connection frame. When the cam is in motion, the strong return spring is stretched, and the extrusion push column drives the two limit extension strips near one end of the sliding connection frame to rotate, so that the angle between the two limit extension strips is gradually reduced, so that the end of the limit extension strip away from the extrusion push column slides inside the limit slide slot frame, thereby driving the angle between the two extension strips to decrease, and pushing the sliding connection frame to slide inside the slide slot, thereby driving the slide cylinder to slide on the outer wall of the inner pipe mold through the rotating cylinder, and the pushing mechanism can be automatically driven to slide on the outer wall of the inner pipe mold during the movement of the main body toward the material taking device, so that the clamping block is automatically moved out of the closed slot, thereby improving the demoulding efficiency of the drainage pipe and increasing the practicability of the device.

[0016] (3) After the present invention pushes the clamping block out of the closed groove, the bottom of the clamping block loses the force limiting the direction of the clamping block. Through the tension of the stretch spring, the sliding bar is driven to slide to the other side inside the sliding groove, pulling the clamping block to rotate at the end of the sliding bar away from the dragging slide cylinder. A misalignment angle is generated at the connection between the clamping block and the sliding bar, so that the clamping block and the sliding bar can form a vertical posture, thereby increasing the opening of the inner tube mold, making it easier for the annular plugging plate to move out of the closed groove. Before the clamping block is reset, the worker can drive the annular plugging plate to rotate. The plate rotates inside the sliding rotating frame to make the annular plugging plate correspond to the closed groove, and then the annular plugging plate is pushed into the closed groove. During the resetting process, the main body drives the dragging slide cylinder to slide synchronously on the surface of the inner tube mold by the pulling force of the strong reset spring, thereby pulling the clamping block to rotate at one end of the sliding push bar through the sliding push bar, and the annular plugging plate inside the closed groove is squeezed and limited, thereby improving the sealing of the annular plugging plate to the outlet of the inner tube mold, and avoiding the phenomenon that the annular plugging plate is thrown out of the closed groove due to centrifugal force when the inner tube mold rotates.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an overall cross-sectional view of the present invention; Figure 3 It is a schematic diagram of the main structure of the present invention; Figure 4 It is a schematic diagram of the structure of the tube mold mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the clamping mechanism of the present invention; Figure 6 This is a schematic diagram of the structure of the driving mechanism of the present invention; Figure 7 It is a schematic diagram of the structure of the offset mechanism of the present invention; Figure 8 for Figure 4 Enlarged view of point A in the middle; Fig. 9 Figure 2 is a diagram of the method of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. main body; 101. rotating wheel device; 102. supporting slide; 103. slide slot; 104. limit slide slot frame; 105. limit outlet frame; 2. pipe mold mechanism; 201. inner pipe mold; 202. contact swivel; 203. sliding hole; 204. movable groove; 205. through slide slot; 206. closed groove; 207. sliding swivel; 3. pressing mechanism; 301. sliding bar; 302. limit ring; 303. matching transfer bar; 30 4. Right-angle extension frame; 305. Clamping block; 306. Tension spring; 307. Annular blocking plate; 308. Rotating frame; 309. Control connecting plate; 4. Pushing mechanism; 401. Drag slide; 402. Sliding push strip; 403. Transfer push frame; 404. Push plate; 5. Counteracting mechanism; 501. Rotating cylinder; 502. Sliding connecting frame; 503. Extrusion push column; 504. Extension strip; 505. Limit extension strip; 506. Strong reset spring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figure 1-Figure 9 As shown, the present invention is a pipe casting mold for a cast iron drainage pipe, comprising a main body 1 and two sets of runner devices 101, both of which are fixedly connected to the inner wall of the main body 1, and further comprising: The tube mold mechanism 2 is arranged inside the main body 1. The tube mold mechanism 2 includes two contact rotating rings 202, and the two contact rotating rings 202 are respectively rotatably connected between the two groups of rotating wheel devices 101. The inner walls of the two contact rotating rings 202 are fixedly connected with the inner tube mold 201. The outer wall of the inner tube mold 201 is provided with a plurality of sliding holes 203. The left and right sides of the plurality of sliding holes 203 are penetrated with movable grooves 204. The right side of the inner tube mold 201 is provided with a closed groove 206. The right side of the closed groove 206 is fixedly connected with a sliding rotating frame 207. The tube mold mechanism 2 also includes a plurality of penetrating slide grooves 205. The plurality of penetrating slide grooves 205 are all penetrated and opened on the outer wall of a contact rotating ring 202 near the closed groove 206. The sliding holes 203 are connected with the movable grooves 204. , a strip-shaped sliding hole is provided on the outer wall of the sliding rotating frame 207, and a rounded corner is provided on the same side of the inner tube mold 201 as the closed groove 206. The wheel device 101 inside the main body 1 is connected to the contact rotating ring 202 to drive the inner tube mold 201 to rotate inside the main body 1. During the rotation of the inner tube mold 201, the molten iron pipeline is extended into the inner tube mold 201, and the molten iron is evenly added to the inner tube mold 201. The rotation speed is then increased by the wheel device 101 to drive the inner tube mold 201 to rotate centrifugally inside the main body 1, so that the molten iron inside the inner tube mold 201 covers the inner wall of the inner tube mold 201. During the rotation, the molten iron will gradually cool and take shape, and then the slide groove 103 is driven to slide through the external hydraulic device, thereby driving the main body 1 to move in the direction of the material taking device; The pushing mechanism 4 is arranged inside the multiple movable grooves 204, and the pushing mechanism 4 includes a drag slide 401, which is slidably connected to the outer wall of the inner tube mold 201, and the inner wall of the inner tube mold 201 is fixedly connected with multiple sliding push strips 402. The pushing mechanism 4 also includes multiple transfer push racks 403, and the multiple transfer push racks 403 are respectively fixedly connected to the side of the multiple sliding push strips 402 away from the pressing block 305. The transfer push rack 403 and the sliding push strip 402 are slidably connected to the inside of the movable groove 204, and the connection between the drag slide 401 and the sliding push strip 402 is slidably connected to the inside of the sliding hole 203. The end of the transfer push rack 403 away from the drag slide 401 is fixedly connected with a push plate 404. The plate 404 is slidably connected to the inner wall of the inner tube mold 201, and the end of the outer wall of the transfer push frame 403 away from the drag slide 401 slides through the side of the inner tube mold 201 away from the closed groove 206. When the drag slide 401 slides on the outer wall of the inner tube mold 201, it will drive the connection between the drag slide 401 and the sliding push strip 402 to slide inside the sliding hole 203, thereby driving multiple sliding push strips 402 to push the clamping block 305 out of the closed groove 206, so that the annular blocking plate 307 loses its squeezing force. In the process of pushing the clamping block 305 out of the closed groove 206, the push plate 404 will be driven from the other end through the transfer push frame 403 to push the tube body formed inside the inner tube mold 201 to one side of the limit outlet frame 105; The clamping mechanism 3 is arranged at one end of the sliding push bar 402 away from the drag slide 401, and the clamping mechanism 3 includes a plurality of clamping blocks 305, and the plurality of clamping blocks 305 are respectively rotatably connected to one end of the sliding push bar 402 away from the drag slide 401, and the clamping mechanism 3 also includes a plurality of sliding bars 301, and the plurality of sliding bars 301 are respectively slidably connected in the through slide groove 205, and the plurality of sliding bars 301 are fixedly connected to the limiting ring 302 on one side away from the closed groove 206, and the sliding bar 301 is rotatably connected to the matching transfer bar 303 on one side away from the limiting ring 302, and the matching transfer bar 303 is rotatably connected to the matching transfer bar 303. The side of the connecting strip 303 away from the sliding strip 301 is rotatably connected with a right-angle extension frame 304, the bottom of the right-angle extension frame 304 is fixedly connected to the top of the pressing block 305, and two tension springs 306 are fixedly connected between a contact swivel 202 near the closed groove 206 and a side of the matching transfer strip 303 near the right-angle extension frame 304, and an annular plugging plate 307 is slidably connected inside the closed groove 206, and a rotating frame 308 is fixedly connected to the outer wall of the annular plugging plate 307 and a corresponding place of the sliding rotating frame 207, and the rotating frame 308 is slidably connected to the inside of the strip sliding hole on the annular plugging plate 307 , a control connecting plate 309 is fixedly connected to one side of the rotating frame 308 away from the annular plugging plate 307. After pushing the right-angle extension frame 304 to slide outward inside the sliding rotating frame 207 through the rotating frame 308, a worker can then use a tool to push the control connecting plate 309 downward to rotate the annular plugging plate 307 inside the sliding rotating frame 207, thereby separating the annular plugging plate 307 from the end face of the tube body, so that a worker can move the annular plugging plate 307 out of the closed groove 206 at a distance, and then enter the tube body through the material taking support frame to take the tube body out of the inner tube mold 201, so that a worker can remove the annular plugging plate 307 from a distance. After the shaped blocking plate 307 is removed from the closed groove 206 and the pressing block 305 is pushed out of the closed groove 206, the bottom of the pressing block 305 loses the force limiting the direction of the pressing block 305, and the pulling force of the tension spring 306 drives the sliding bar 301 to slide to the other side inside the sliding groove 205, pulling the pressing block 305 to rotate at the end of the sliding push bar 402 away from the drag slide 401, and a misalignment angle is generated at the connection between the pressing block 305 and the sliding push bar 402, so that the pressing block 305 and the sliding push bar 402 can form a vertical posture, thereby increasing the opening of the inner tube mold 201; The front and back of the main body 1 are fixedly connected with a support slide 102, the bottom of the support slide 102 is slidably connected to the inside of the slide rail frame, the side of the main body 1 close to the closed groove 206 is fixedly connected to a limited outlet frame 105, the bottom of the main body 1 is fixedly connected with two limited slide slot frames 104, and a slide slot 103 is opened at the central axis of the bottom of the main body 1; The outer wall of the drag slide 401 is provided with an abutting mechanism 5, which includes a rotating drum 501, which is rotatably connected to the outer wall of the drag slide 401, and a sliding connecting frame 502 is fixedly connected to the bottom of the rotating drum 501, and an extrusion push column 503 is slidably connected to the left and right sides of the sliding connecting frame 502, and the extrusion push column 503 slides through the sliding connecting frame 502, and the side of the extrusion push column 503 away from the closed groove 206 is rotatably connected to two limiting extension strips 505, and a strong return spring 506 is fixedly connected between the side of the extrusion push column 503 close to the limiting extension strip 505 and the sliding connecting frame 502, and the ends of the tops of the two limiting extension strips 505 away from the extrusion push column 503 are respectively slidably connected to the insides of the two limiting slide groove frames 104, and the ends of the bottoms of the two limiting extension strips 505 away from the extrusion push column 503 are both rotatably connected to the extension strips 504, and the extension strips The end of 504 away from the limit extension strip 505 is rotatably connected to the outer wall of the sliding connection frame 502, and the sliding connection frame 502 slides through the slide groove 103. During the movement, the extrusion push column 503 will be against the inner wall of the external active cavity, so that the extrusion push column 503 slides inside the sliding connection frame 502, stretching the strong return spring 506. The extrusion push column 503 will drive the two limit extension strips 505 near one end of the sliding connection frame 502 to rotate, so that the angle between the two limit extension strips 505 gradually decreases, so that the end of the limit extension strip 505 away from the extrusion push column 503 slides inside the limit slide groove frame 104, thereby driving the angle between the two extension strips 504 to decrease, and pushing the sliding connection frame 502 to slide inside the slide groove 103, thereby driving the slide cylinder 401 to slide on the outer wall of the inner tube mold 201 through the rotating cylinder 501.

[0023] When in use, the rotating cylinder 501 is connected with the drag slide 401 through rotation to avoid affecting the rotation of the inner tube mold 201. When the drag slide 401 slides on the outer wall of the inner tube mold 201, it will drive the connection between the drag slide 401 and the sliding push strip 402 to slide inside the sliding hole 203, thereby driving multiple sliding push strips 402 to push the clamping block 305 out of the closed groove 206, so that the annular plugging plate 307 loses its squeezing force. In the process of pushing the clamping block 305 out of the closed groove 206, the push plate 404 will be driven from the other end through the adapter push frame 403 to push the tube formed inside the inner tube mold 201. The body is pushed toward one side of the limit outlet frame 105, so that the right-angle extension frame 304 can slide outward inside the sliding rotating frame 207 through the rotating frame 308, and then the worker can use a tool to push the control connecting plate 309 downward to make the annular plugging plate 307 rotate inside the sliding rotating frame 207, so that the annular plugging plate 307 is separated from the end face of the tube body, so that the worker can move the annular plugging plate 307 out of the closed groove 206 at a distance, and then enter the tube body through the material taking support frame to take the tube body out of the inner tube mold 201, so that the worker can remove the annular plugging plate 307 from the closed groove 206 at a distance.

[0024] Example 2, please refer to Figure 1-Figure 9 As shown, when in use, the inner tube mold 201 is driven to rotate inside the main body 1 by connecting the wheel device 101 inside the main body 1 with the contact swivel 202. During the rotation of the inner tube mold 201, the molten iron pipeline is extended into the inner tube mold 201, and the molten iron is evenly added to the inner tube mold 201. The rotation speed is then increased by the wheel device 101 to drive the inner tube mold 201 to rotate centrifugally inside the main body 1, so that the molten iron inside the inner tube mold 201 covers the inner wall of the inner tube mold 201. During the rotation, the molten iron will gradually cool and take shape, and then the external hydraulic device will drive the slide 103 to slide, thereby driving the main body 1 to move in the direction of the material taking device. During the movement, the extrusion push column 503 will be against the inner wall of the external active cavity, so that the extrusion push column 503 will slide in the sliding connection. The connecting frame 502 slides inside to stretch the strong return spring 506, and the extrusion push column 503 drives the two limit extension bars 505 near one end of the sliding connecting frame 502 to rotate, so that the angle between the two limit extension bars 505 gradually decreases, so that the end of the limit extension bar 505 away from the extrusion push column 503 slides inside the limit slide slot frame 104, thereby driving the angle between the two extension bars 504 to decrease, and pushing the sliding connecting frame 502 to slide inside the slide slot 103, thereby driving the drag slide 401 to slide on the outer wall of the inner tube mold 201 through the rotating cylinder 501, and can automatically drive the pushing mechanism 4 to slide on the outer wall of the inner tube mold 201 during the movement of the main body 1 toward the material taking device, so that the pressing block 305 automatically moves out of the closed groove 206; After the clamping block 305 is pushed out of the closed groove 206, the bottom of the clamping block 305 loses the force limiting the direction of the clamping block 305, and the pulling force of the stretch spring 306 drives the sliding bar 301 to slide to the other side inside the sliding groove 205, pulling the clamping block 305 to rotate at the end of the sliding push bar 402 away from the drag slide 401, and a misalignment angle is generated at the connection between the clamping block 305 and the sliding push bar 402, so that the clamping block 305 and the sliding push bar 402 can form a vertical posture, thereby increasing the opening of the inner tube mold 201, making it easier for the annular plugging plate 307 to move out of the closed groove 206, so that before the clamping block 305 is reset, the worker drives the annular plugging plate 307 to The sliding rotating frame 207 rotates internally to make the annular plugging plate 307 correspond to the closed groove 206, and then the annular plugging plate 307 is pushed into the closed groove 206. During the resetting process, the main body 1 drives the dragging slide 401 to slide synchronously on the surface of the inner tube mold 201 by driving the pulling force of the strong reset spring 506, thereby pulling the clamping block 305 to rotate at one end of the sliding push bar 402 through the sliding push bar 402, and the annular plugging plate 307 inside the closed groove 206 is squeezed and limited, thereby improving the sealing performance of the annular plugging plate 307 at the outlet of the inner tube mold 201, and avoiding the phenomenon that the annular plugging plate 307 is thrown out of the closed groove 206 due to the centrifugal force when the inner tube mold 201 rotates.

[0025] A method for using a cast pipe mold for a cast iron drainage pipe comprises the following steps: S1: The inner tube mold 201 is driven to rotate inside the main body 1 by connecting the wheel device 101 inside the main body 1 with the contact swivel 202. During the rotation of the inner tube mold 201, the molten iron pipeline is extended into the inner tube mold 201, and the molten iron is evenly added into the inner tube mold 201; S2: The rotating wheel device 101 is then used to increase the rotation speed, driving the inner tube mold 201 to perform centrifugal rotation inside the main body 1, so that the molten iron inside the inner tube mold 201 covers the inner wall of the inner tube mold 201, and the molten iron gradually cools and takes shape during the rotation process; S3: During the movement of the main body 1, the extrusion push column 503 will abut against the inner wall of the external active cavity, so that the extrusion push column 503 will slide inside the sliding connection frame 502. The extrusion push column 503 will drive the two limit extension bars 505 near one end of the sliding connection frame 502 to rotate, so that the angle between the two limit extension bars 505 will gradually decrease, so that the end of the limit extension bar 505 away from the extrusion push column 503 will slide inside the limit slide slot frame 104, thereby driving the angle between the two extension bars 504 to decrease, and pushing the sliding connection frame 502 to slide inside the slide slot 103; S4: The rotary cylinder 501 drives the dragging slide cylinder 401 to slide on the outer wall of the inner tube mold 201, and the pushing mechanism 4 can be automatically driven to slide on the outer wall of the inner tube mold 201 during the movement of the main body 1 toward the material taking device, so that the pressing block 305 automatically moves out of the closed groove 206; S5: The worker uses a tool to push the control connecting plate 309 downward to make the annular plugging plate 307 rotate inside the sliding rotating frame 207, thereby separating the annular plugging plate 307 from the end face of the tube body, so that the worker can move the annular plugging plate 307 out of the closed groove 206 at a distance, and then enter the tube body through the material taking support frame to take the tube body out of the inner tube mold 201.

[0026] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pipe casting mold for a cast iron drainage pipe, comprising a main body (1) and two sets of runner devices (101), wherein the two runner devices (101) are fixedly connected to the inner wall of the main body (1), characterized in that: Also includes: A tube mold mechanism (2), the tube mold mechanism (2) being arranged inside the main body (1), the tube mold mechanism (2) comprising two contact rotating rings (202), the two contact rotating rings (202) being rotatably connected between two groups of rotating wheel devices (101), the inner walls of the two contact rotating rings (202) being fixedly connected with an inner tube mold (201), the outer wall of the inner tube mold (201) being provided with a plurality of sliding holes (203), movable grooves (204) being provided through the left and right sides of the plurality of sliding holes (203), the right side of the inner tube mold (201) being provided with a closed groove (206), the right side of the closed groove (206) being fixedly connected with a sliding rotating frame (207); A pushing mechanism (4), the pushing mechanism (4) being arranged inside the plurality of movable grooves (204), the pushing mechanism (4) comprising a drag slide (401), the drag slide (401) being slidably connected to the outer wall of the inner tube mold (201), and the inner wall of the inner tube mold (201) being fixedly connected to a plurality of sliding push strips (402); A clamping mechanism (3), the clamping mechanism (3) being arranged at one end of the sliding push bar (402) away from the dragging slide cylinder (401), the clamping mechanism (3) comprising a plurality of clamping blocks (305), the plurality of clamping blocks (305) being rotatably connected to one end of the sliding push bar (402) away from the dragging slide cylinder (401).

2. The pipe casting mold for a cast iron drainage pipe according to claim 1, characterized in that: The front and back sides of the main body (1) are fixedly connected to support slides (102); the bottom of the support slides (102) is slidably connected to the inside of the slide rail frame; a side of the main body (1) close to the closed groove (206) is fixedly connected to a limited outlet frame (105); the bottom of the main body (1) is fixedly connected to two limited slide groove frames (104); and a slide groove (103) is provided at the central axis of the bottom of the main body (1).

3. The pipe casting mold for a cast iron drainage pipe according to claim 2, characterized in that: The tube mold mechanism (2) further comprises a plurality of through slide grooves (205), each of which is provided through the outer wall of a contact rotating ring (202) near the closed groove (206), the sliding hole (203) is connected to the movable groove (204), a strip-shaped sliding hole is provided on the outer wall of the sliding rotating frame (207), and a rounded corner is provided on the same side of the inner tube mold (201) as the closed groove (206).

4. The pipe casting mold for a cast iron drainage pipe according to claim 3, characterized in that: The clamping mechanism (3) further comprises a plurality of sliding bars (301), wherein the plurality of sliding bars (301) are respectively slidably connected in the through sliding groove (205), and the side of the plurality of sliding bars (301) away from the closed groove (206) is fixedly connected to a limiting ring (302), the side of the sliding bar (301) away from the limiting ring (302) is rotatably connected to a matching transfer bar (303), and the side of the matching transfer bar (303) away from the sliding bar (301) is rotatably connected to a right-angle extension frame (304).

5. The pipe casting mold for a cast iron drainage pipe according to claim 4, characterized in that: The bottom of the right-angle extension frame (304) is fixedly connected to the top of the clamping block (305), and two tension springs (306) are fixedly connected between a contact rotating ring (202) close to the closed groove (206) and a side of the matching transfer strip (303) close to the right-angle extension frame (304). An annular plugging plate (307) is slidably connected inside the closed groove (206), and a rotating frame (308) is fixedly connected at a point on the outer wall of the annular plugging plate (307) corresponding to the sliding rotating frame (207). The rotating frame (308) is slidably connected to the inside of the strip sliding hole on the annular plugging plate (307), and a control connecting plate (309) is fixedly connected to the side of the rotating frame (308) away from the annular plugging plate (307).

6. The pipe casting mold for a cast iron drainage pipe according to claim 5, characterized in that: The pushing mechanism (4) further comprises a plurality of transfer push frames (403), wherein the plurality of transfer push frames (403) are respectively fixedly connected to a side of the plurality of sliding push strips (402) away from the pressing block (305); the transfer push frames (403), the sliding push strips (402) are slidably connected to the inside of the movable groove (204); the connection between the drag slide cylinder (401) and the sliding push strips (402) is slidably connected to the inside of the sliding hole (203); one end of the transfer push frame (403) away from the drag slide cylinder (401) is fixedly connected to a push plate (404); the push plate (404) is slidably connected to the inner wall of the inner tube mold (201); and one end of the outer wall of the transfer push frame (403) away from the drag slide cylinder (401) slides through a side of the inner tube mold (201) away from the closed groove (206).

7. The pipe casting mold for a cast iron drainage pipe according to claim 6, characterized in that: The outer wall of the dragging slide (401) is provided with an abutting mechanism (5), and the abutting mechanism (5) comprises a rotating cylinder (501), and the rotating cylinder (501) is rotatably connected to the outer wall of the dragging slide (401), and a sliding connection frame (502) is fixedly connected to the bottom of the rotating cylinder (501), and an extrusion push column (503) is slidably connected to the left and right sides of the sliding connection frame (502), and the extrusion push column (503) slides through the sliding connection frame (502), and the side of the extrusion push column (503) away from the closed groove (206) is rotatably connected to two limit extension strips (505).

8. The pipe casting mold for a cast iron drainage pipe according to claim 7, characterized in that: A strong return spring (506) is fixedly connected between the side of the extrusion push column (503) close to the limit extension strip (505) and the sliding connection frame (502); the ends of the tops of the two limit extension strips (505) away from the extrusion push column (503) are respectively slidably connected to the inside of the two limit slide slot frames (104); the ends of the bottoms of the two limit extension strips (505) away from the extrusion push column (503) are both rotatably connected to the extension strip (504); the ends of the extension strip (504) away from the limit extension strip (505) are rotatably connected to the outer wall of the sliding connection frame (502); and the sliding connection frame (502) slides through the slide slot (103).

9. A method for using a cast iron drain pipe casting mold, using the cast iron drain pipe casting mold as claimed in claim 8, characterized in that: The following steps are involved: S1: connecting the wheel device (101) inside the main body (1) to the contact rotating ring (202) to drive the inner tube mold (201) to rotate inside the main body (1); during the rotation of the inner tube mold (201), the molten iron pipeline is extended into the inner tube mold (201), and the molten iron is evenly added into the inner tube mold (201); S2: the rotation speed is then increased by the rotating wheel device (101), driving the inner tube mold (201) to perform centrifugal rotation inside the main body (1), so that the molten iron inside the inner tube mold (201) covers the inner wall of the inner tube mold (201), and the molten iron gradually cools and takes shape during the rotation process; S3: During the movement of the main body (1), the extrusion push column (503) will abut against the inner wall of the external active cavity, so that the extrusion push column (503) will slide inside the sliding connection frame (502). The extrusion push column (503) will drive the two limit extension bars (505) near one end of the sliding connection frame (502) to rotate, so that the angle between the two limit extension bars (505) gradually decreases, so that the end of the limit extension bar (505) away from the extrusion push column (503) slides inside the limit slide groove frame (104), thereby driving the angle between the two extension bars (504) to decrease, and pushing the sliding connection frame (502) to slide inside the slide groove (103); S4: the rotating cylinder (501) drives the dragging slide cylinder (401) to slide on the outer wall of the inner tube mold (201), so that the pushing mechanism (4) can be automatically driven to slide on the outer wall of the inner tube mold (201) during the movement of the main body (1) toward the material taking device, so that the pressing block (305) is automatically moved out of the closed groove (206); S5: The worker uses a tool to push the control connecting plate (309) downward to rotate the annular plugging plate (307) inside the sliding rotating frame (207), thereby separating the annular plugging plate (307) from the end face of the tube body. This allows the worker to move the annular plugging plate (307) out of the closed groove (206) from a distance, and then enter the interior of the tube body through the material removal support frame to remove the tube body from the inner tube mold (201).

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