A pipe casting mold for cast iron drainage pipe and its use method

Abstract

The present invention relates to the technical field of cast pipe molds, and discloses a cast pipe mold for cast iron drainage pipes and a method for using the same, 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 a pipe mold mechanism, which is arranged inside the main body, and comprises two contact swivels, which are rotatably connected between the two sets of runner devices. The present invention allows workers to move the annular plug out of the closed groove at a distance, and then enter the pipe body through a material-taking support to remove the inner pipe mold from the pipe body, allowing workers to remove the annular plug from the closed groove at a distance, thereby improving the safety of the device when disassembling the annular plug, and allowing the device to directly disassemble the annular plug 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 forming efficiency of the integrated pipe mold, and increasing the practicality of the device.

Description

Technical Field

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

[0002] Centrifugal casting involves injecting liquid metal into a high-speed rotating mold, allowing the molten metal to fill the mold under the influence of centrifugal force and form the casting. Centrifugally cast pipe production requires the installation of end caps at both ends of the mold to seal the molten iron, allowing it to solidify and form the pipe. Currently, centrifugal pipe molds are manufactured as a single piece, with the left and right ends of the mold being identical in shape and size, making them suitable for use in centrifuges with manually added baffles.

[0003] Generally, after the cast iron drainage pipe is formed, workers need to manually remove the plugging plate at one end of the casting pipe mold, so that the formed drainage pipe inside the casting pipe mold can be taken out of the mold by a machine. During use, the surface of the casting pipe mold will transfer heat to the casting pipe mold due to the molten iron, which will cause the surface temperature of the casting pipe mold to be too high. 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 drainage pipe, the pipe mold will not be able to quickly perform the next centrifugal forming during the standing process, 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] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] 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:

[0007] The tube mold mechanism is arranged inside the main body and includes two contact swivels, which are rotatably connected between the two sets of runner devices. The inner walls of the two contact swivels are fixedly connected to the inner tube mold. The outer wall of the inner tube mold is provided with multiple sliding holes. The left and right sides of the multiple sliding holes are penetrated by movable grooves. 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 to the sliding turret.

[0008] The pushing mechanism includes a drag slide and a plurality of sliding push strips, the sliding push strips are arranged inside the movable groove, and the drag slide is slidably connected to the outer wall of the inner tube mold;

[0009] The clamping mechanism is arranged at one end of the sliding push bar away from the drag slide, and the clamping mechanism includes a plurality of clamping blocks, which are respectively rotatably connected to the end of the sliding push bar away from the drag slide.

[0010] 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.

[0011] Furthermore, the tube mold mechanism also includes a plurality of through-slide grooves, all of which are opened through the outer wall of a contact swivel ring near the closed groove, the sliding hole is connected to the movable groove, a strip-shaped sliding hole is opened on the outer wall of the sliding turret, and a rounded corner is provided on the same side of the inner tube mold as the closed groove.

[0012] Furthermore, the clamping mechanism also includes multiple sliding bars, which are respectively slidably connected in the through sliding grooves, and the sliding bars are fixedly connected to the limiting ring on the side away from the closed groove, and the sliding bar is rotatably connected to the matching transfer bar on the side away from the limiting ring, and the matching transfer bar is rotatably connected to the right-angle extension frame on the side away from the sliding bar.

[0013] 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 mating adapter bar 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 position 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.

[0014] 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 slidingly connected to the inside of the movable groove, the connection between the drag slide and the sliding push bar is slidingly 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 slidingly connected to the inner wall of the inner tube mold, and the outer wall of the transfer push frame away from the end of the drag slide slides and slides through the side of the inner tube mold away from the closed groove.

[0015] Furthermore, an offset 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 connecting frame is fixedly connected to the bottom of the rotating drum. The left and right sides of the sliding connecting frame are slidably connected to extrusion push columns, which slide through the sliding connecting frame. The extrusion push columns are rotatably connected to the side of the extrusion push columns away from the closed groove, and two limiting extension strips are connected.

[0016] Furthermore, a strong return spring is fixedly connected between the side of the extrusion push column close to the limit extension bar and the sliding connecting frame, and the ends of the tops of the two limit extension bars away from the extrusion push column are respectively slidably connected to the inside of the two limit slide frames, and the ends of the bottoms of the two limit extension bars away from the extrusion push column are rotatably connected to the extension bars, and the ends of the extension bars away from the limit extension bar are rotatably connected to the outer wall of the sliding connecting frame, and the sliding connecting frame slides through the slide groove.

[0017] A method for using a cast iron drain pipe mold comprises the following steps:

[0018] S1: The inner tube mold is driven to rotate inside the main body by connecting the runner device inside the main body with the contact swivel. During the rotation of the inner tube mold, the molten iron pipe is extended into the inner tube mold, and the molten iron is evenly added into the inner tube mold;

[0019] S2: The rotating wheel device increases 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, the molten iron gradually cools and takes shape;

[0020] S3: During the movement of the main body, the extrusion push column will abut against the inner wall of the external movable cavity, causing the extrusion push column to slide inside the sliding connection frame. The extrusion push column will drive the two limit extension bars near one end of the sliding connection frame to rotate, causing the angle between the two limit extension bars to gradually decrease, thereby causing the end of the limit extension bar away from the extrusion push column to slide inside the limit slide frame, thereby driving the angle between the two extension bars to decrease, and pushing the sliding connection frame to slide inside the slide groove;

[0021] S4: The rotating drum drives the sliding drum 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;

[0022] S5: The worker uses a tool to push the control connecting plate downward to make the annular plugging plate rotate inside the sliding turntable, thereby separating the annular plugging plate from the end face of the pipe body. In this way, the worker can move the annular plugging plate out of the closed groove from a distance, and then enter the pipe body through the material removal support bracket to remove the pipe body from the inner pipe mold.

[0023] The present invention has the following beneficial effects:

[0024] (1) The present invention avoids affecting the rotation of the inner tube mold by the rotation connection between the rotating drum and the dragging slide. When the dragging slide slides on the outer wall of the inner tube mold, it will drive the connection between the dragging 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, so that the annular blocking plate loses its squeezing force. In the process of pushing the clamping block out of the closed groove, the push plate will be driven from the other end through the adapter push frame to push the tube body formed inside the inner tube mold to one side of the limit outlet frame, so that the right-angle extension frame can be pushed outward through the rotating frame inside the sliding rotating frame, and then the worker can use tools to push the clamping block out of the closed groove. Pushing the control connecting plate downward causes the annular plugging plate to rotate inside the sliding rotary 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.

[0025] (2) The present invention drives the inner tube mold 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 pipe 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, 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, the molten iron will gradually cool and take shape, and then the slide will be driven to slide by the external hydraulic device, thereby driving the main body to move toward the material taking device. During the movement, the extrusion push column will be pressed 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 the closed position, the push rod moves and the two limit extension bars near one end of the sliding connection frame are rotated, so that the angle between the two limit extension bars gradually decreases, thereby making the end of the limit extension bar away from the extrusion push rod slide inside the limit slide frame, thereby driving the angle between the two extension bars to decrease, and pushing the sliding connection frame to slide inside the slide, thereby driving the slide to slide on the outer wall of the inner pipe mold through the rotating drum, and automatically driving the pushing mechanism 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 pressing block automatically moves out of the closed groove, thereby improving the demoulding efficiency of the drainage pipe and increasing the practicality of the device.

[0026] (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, and the tension of the stretch spring drives the sliding bar 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 drag slide. A misalignment angle is generated at the connection between the clamping block and the sliding bar, which allows the clamping block and the sliding bar to form a vertical posture, thereby increasing the opening of the inner tube mold, making it easier for the annular plug to move out of the closed groove, and allowing the worker to drive the annular plug before the main body is reset. The plate rotates inside the sliding rotary frame so that the annular plugging plate corresponds 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 drag slide 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, squeezing and limiting the annular plugging plate inside the closed groove, 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.

[0027] 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

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. 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.

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 It is an overall cross-sectional view of the present invention;

[0031] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 4 Schematic diagram of the structure of the tube mold mechanism of the present invention;

[0033] Figure 5 This is a schematic structural diagram of the pressing mechanism of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the propulsion mechanism of the present invention;

[0035] Figure 7 This is a schematic diagram of the offset mechanism structure of the present invention;

[0036] Figure 8 for Figure 4 Enlarged view of point A in the middle;

[0037] Figure 9 This is a diagram of the method of the present invention.

[0038] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0039] In the figure: 1. Main body; 101. Rotating wheel device; 102. Support slide; 103. Slide; 104. Limiting slide frame; 105. Limiting outlet frame; 2. Pipe mold mechanism; 201. Inner pipe mold; 202. Contact swivel; 203. Sliding hole; 204. Movable groove; 205. Through slide; 206. Closed groove; 207. Sliding swivel; 3. Pressing mechanism; 301. Sliding bar; 302. Limiting ring; 303. Matching adapter bar; 30 4. Right-angle extension frame; 305. Pressing block; 306. Tension spring; 307. Annular blocking plate; 308. Rotating frame; 309. Control connecting plate; 4. Pushing mechanism; 401. Drag slide; 402. Sliding push bar; 403. Transfer push frame; 404. Push plate; 5. Counteracting mechanism; 501. Rotating cylinder; 502. Sliding connecting frame; 503. Extrusion push column; 504. Extension bar; 505. Limit extension bar; 506. Strong reset spring. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0041] Example 1, please refer to Figures 1-9 As shown, the present invention is a pipe casting mold for cast iron drainage pipes, 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:

[0042] The tube mold mechanism 2 is arranged inside the main body 1. The tube mold mechanism 2 includes two contact swivels 202, and the two contact swivels 202 are respectively rotatably connected between the two sets of wheel devices 101. The inner walls of the two contact swivels 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 by 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 to a sliding turret 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 swivel 202 near the closed groove 206. The sliding hole 203 is connected to the movable groove 204. , a strip-shaped sliding hole is opened on the outer wall of the sliding rotating rack 207, and a rounded corner is set 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 swivel 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 pipe 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 toward the direction of the material taking device;

[0043] The pushing mechanism 4 includes a drag slide 401 and a plurality of sliding push strips 402, the sliding push strips 402 are arranged inside the movable groove 204, the drag slide 401 is slidably connected to the outer wall of the inner tube mold 201, the pushing mechanism 4 also includes a plurality of transfer push racks 403, the plurality of transfer push racks 403 are respectively fixedly connected to the side of the plurality of sliding push strips 402 away from the pressing block 305, the transfer push rack 403, the sliding push strip 402 are slidably connected to the inside of the movable groove 204, 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 transfer push rack 403 is fixedly connected to the end away from the drag slide 401 with a push plate 404, the push plate 404 It is slidably connected to the inner wall of the inner tube mold 201, and the outer wall of the adapter push frame 403 is away from the end of the drag slide 401 and 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 drives 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 pressing 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 pressing block 305 out of the closed groove 206, the adapter push frame 403 drives the push plate 404 to push the tube body formed inside the inner tube mold 201 from the other end to the side of the limit outlet frame 105;

[0044] 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 the end of the sliding push bar 402 away from the drag slide 401. 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. The side of the plurality of sliding bars 301 away from the closed groove 206 is fixedly connected to the limit ring 302, and the side of the sliding bar 301 away from the limit ring 302 is rotatably connected to the matching transfer bar 303, which is rotated to match the rotation The connecting bar 303 is rotatably connected to the side of the sliding bar 301 with a right-angle extension frame 304, and the bottom of the right-angle extension frame 304 is fixedly connected to the top of the pressing block 305. Two tension springs 306 are fixedly connected between a contact ring 202 near the closed groove 206 and a side of the matching transfer bar 303 near the right-angle extension frame 304. An annular blocking plate 307 is slidably connected inside the closed groove 206. A rotating frame 308 is fixedly connected to the outer wall of the annular blocking plate 307 and a corresponding position of the sliding rotating frame 207. The rotating frame 308 is slidably connected to the inner portion of the strip sliding hole on the annular blocking plate 307. The rotating frame 308 is fixedly connected to a control connecting plate 309 on one side 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, the 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 pipe 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 pipe body through the material taking support bracket to take the pipe body out of the inner pipe mold 201, so that the 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. The tension 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. The 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.

[0045] The front and back of the main body 1 are fixedly connected to the support slide 102, and 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 the limited outlet frame 105. The bottom of the main body 1 is fixedly connected to two limited slide slot frames 104. A slide slot 103 is opened at the central axis of the bottom of the main body 1.

[0046] 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 is rotatably connected to the side of the closed groove 206 with two limit extension bars 505, and a strong return spring 506 is fixedly connected between the side of the extrusion push column 503 close to the limit extension bar 505 and the sliding connecting frame 502, and the top of the two limit extension bars 505 is away from the extrusion push column 503. The end is respectively slidably connected to the inside of the two limit slide frames 104, and the bottom of the two limit extension bars 505 is away from the extrusion push column 503. The end is rotatably connected to the extension bar 504, and the extension bar The end of 504 away from the limit extension bar 505 is rotatably connected to the outer wall of the sliding connecting frame 502, and the sliding connecting frame 502 slides through the slide groove 103. During the movement, the extrusion push column 503 will be pressed against the inner wall of the external active cavity, causing the extrusion push column 503 to slide inside the sliding connecting frame 502, stretching the strong return spring 506. The extrusion push column 503 will drive the two limit extension bars 505 near one end of the sliding connecting frame 502 to rotate, causing the angle between the two limit extension bars 505 to gradually decrease, thereby causing the end of the limit extension bar 505 away from the extrusion push column 503 to slide inside the limit slide groove 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 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.

[0047] When in use, the rotating cylinder 501 is connected to 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 pressing 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 pressing 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 limiting outlet frame 105, so that the right-angle extension frame 304 can slide outward inside the sliding rotary frame 207 through the rotating frame 308, and then the worker can use a tool to push the control connecting plate 309 downward to rotate the annular plugging plate 307 inside the sliding rotary 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.

[0048] Example 2, please refer to Figures 1-9 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 pipe 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 toward the direction of the material taking device. During the movement, the extrusion push column 503 will be pressed against the inner wall of the external active cavity, so that the extrusion push column 503 will be connected in the sliding connection. The connecting frame 502 slides inside, stretching 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 frame 104, thereby driving the angle between the two extension bars 504 to decrease, pushing the sliding connecting frame 502 to slide inside the slide groove 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;

[0049] 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 tension 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 when the sliding push bar 402 is away from the drag slide 401. 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 the clamping block 305 can be driven by the worker to drive the annular plugging plate 307 before the main body 1 is reset. 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 pulling force of the strong reset spring 506 to drive the drag slide 401 to slide synchronously on the surface of the inner tube mold 201, thereby pulling the clamping block 305 to rotate at one end of the sliding push bar 402 through the sliding push bar 402, squeezing and limiting the annular plugging plate 307 inside the closed groove 206, 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 centrifugal force when the inner tube mold 201 rotates.

[0050] A method for using a cast iron drain pipe mold comprises the following steps:

[0051] 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 pipe is extended into the inner tube mold 201, and the molten iron is evenly added into the inner tube mold 201;

[0052] S2: The rotating wheel device 101 is then used to increase the rotation speed, driving 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 process, the molten iron gradually cools and takes shape;

[0053] S3: During the movement of the main body 1, the extrusion push column 503 will abut against the inner wall of the external movable cavity, causing the extrusion push column 503 to 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, causing the angle between the two limit extension bars 505 to gradually decrease, thereby causing the end of the limit extension bar 505 away from the extrusion push column 503 to slide inside the limit slide 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;

[0054] S4: The rotating cylinder 501 drives the dragging slide 401 to slide on the outer wall of the inner tube mold 201, 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 removal device, so that the pressing block 305 is automatically moved out of the closed groove 206;

[0055] 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 turntable 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 from a distance, and then enter the interior of the tube body through the material removal support bracket to remove the tube body from the inner tube mold 201.

[0056] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. 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) is arranged inside the main body (1), the tube mold mechanism (2) comprises two contact rotating rings (202), 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 to 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 by movable grooves (204), the right side of the inner tube mold (201) is provided with a closed groove (206), and the right side of the closed groove (206) is fixedly connected to a sliding rotating frame (207); A pushing mechanism (4), the pushing mechanism (4) comprising a drag slide (401) and a plurality of sliding push strips (402), the sliding push strips (402) being arranged inside the movable groove (204), and the drag slide (401) being slidably connected to the outer wall of the inner tube mold (201); A clamping mechanism (3), the clamping mechanism (3) is arranged at one end of the sliding push bar (402) away from the dragging slide (401), 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 dragging slide (401); 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, 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 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); The tube mold mechanism (2) further comprises a plurality of through-slide grooves (205), wherein the plurality of through-slide grooves (205) are all provided through the outer wall of a contact rotating ring (202) near the closed groove (206), the sliding hole (203) is communicated with 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); 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), wherein 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); The bottom of the right-angle extension frame (304) is fixedly connected to the top of the pressing block (305); two tension springs (306) are fixedly connected between a contact rotating ring (202) near the closed groove (206) and a side of the matching transfer strip (303) near the right-angle extension frame (304); an annular blocking plate (307) is slidably connected inside the closed groove (206); a rotating frame (308) is fixedly connected at a point on the outer wall of the annular blocking plate (307) corresponding to the sliding rotating frame (207); the rotating frame (308) is slidably connected to the inside of the strip-shaped sliding hole on the annular blocking plate (307); and a control connecting plate (309) is fixedly connected to the side of the rotating frame (308) away from the annular blocking plate (307); 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 dragging slide (401) and the sliding push strips (402) is slidably connected to the inside of the sliding hole (203), the end of the transfer push frame (403) away from the dragging slide (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 the outer wall of the transfer push frame (403) away from the end of the dragging slide (401) slides through the side of the inner tube mold (201) away from the closed groove (206).

2. The pipe casting mold for a cast iron drain pipe according to claim 1, characterized in that: The outer wall of the dragging slide (401) is provided with an abutting mechanism (5), and the abutting mechanism (5) includes a rotating cylinder (501), the rotating cylinder (501) is rotatably connected to the outer wall of the dragging slide (401), the bottom of the rotating cylinder (501) is fixedly connected to a sliding connecting frame (502), the left and right sides of the sliding connecting frame (502) are slidably connected to extrusion push columns (503), the extrusion push columns (503) slide through the sliding connecting frame (502), and the side of the extrusion push columns (503) away from the closed groove (206) is rotatably connected to two limit extension bars (505).

3. The pipe casting mold for a cast iron drain pipe according to claim 2, 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), and 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 frames (104), and 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), and 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 groove (103).

4. A method for using a pipe casting mold for a cast iron drain pipe, using the pipe casting mold for a cast iron drain pipe according to claim 3, characterized in that: The following steps are involved: 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 rotating ring (202). During the rotation of the inner tube mold (201), the molten iron pipe 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 increased by the rotating wheel device (101), driving 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), and the molten iron gradually cools and forms during the rotation process; S3: During the movement of the main body (1), the extrusion push column (503) will be pressed against the inner wall of the external movable 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 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), 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) 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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