A vertical centrifugal casting device for twisted sheet tubes

Abstract

The present invention relates to the technical field of twisted sheet tube casting, and discloses a vertical centrifugal casting device for a twisted sheet tube, which comprises a support plate, an outer mold shell, a support frame, a lifting mechanism, and an inner mold body. The outer mold shell is a cylindrical barrel structure with openings at both ends, the outer mold shell passes through the center of the support plate, the outer mold shell is vertically arranged, and the support frame is fixed to the bottom of the outer mold shell. When the twisted sheet tube is cast, the opening and closing component moves down, and then the trigger plate contacts the plate surface of the connecting plate, thereby driving the trigger plate to rotate clockwise. When the opening and closing component continues to move down, the end of the baffle contacts the upper end surface of the guide plate, thereby driving the baffle to move in the connecting shell, thereby opening the connecting shell. At this time, the compressed high-pressure gas can be discharged through the exhaust pipe, thereby lifting the top column, and then the top column lifts the casting, and the upper end of the casting extends out of the outer mold shell, thereby facilitating the removal of the casting.

Description

Technical Field

[0001] The invention relates to the technical field of twisted sheet tube casting, and in particular to a vertical centrifugal casting device for a twisted sheet tube. Background Art

[0002] The twisted sheet tube is a precision integrally cast tube with twisted sheets inside. The twisted sheet tube is formed by integral casting with the help of a mold. The twisted sheet tube can change the fluid passing through it from the original plunger flow to a rotating flow, thereby forming a lateral flushing effect on the inner wall of the furnace tube, thereby improving the convective heat transfer effect. However, after the twisted sheet tube is formed, it is not convenient to take out the twisted sheet tube, and it is not convenient to demold the twisted sheet tube. Moreover, after the twisted sheet tube is centrifugally cast, impurities will be generated inside the mold. Therefore, a vertical centrifugal casting equipment for twisted sheet tubes is required. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a vertical centrifugal casting device for twisted sheet tubes.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A vertical centrifugal casting device for twisted sheet tubes, comprising:

[0006] A support plate, an outer mold shell, a support frame, a lifting mechanism, and an inner mold body. The outer mold shell is a cylindrical structure with openings at both ends. The outer mold shell passes through the center of the support plate and is arranged vertically. The support frame is fixed to the bottom of the outer mold shell. A bearing plate is coaxially fixedly sleeved in the outer mold shell. The bearing plate is a circular plate. The inner mold body is sleeved in the outer mold shell. The bearing plate is between the inner mold body and the outer mold shell. The lifting mechanism is arranged on the support frame. The power output end of the lifting mechanism is fixedly connected to the bottom of the inner mold body. The lifting mechanism can drive the inner mold body to move up and down in the outer mold shell. A cover plate is matched at the top open end of the outer mold shell, and the cover plate can be opened and closed. An injection shell is arranged on the top of the cover plate. A drainage channel is opened through the plate surface of the cover plate, and the injection shell is connected to the drainage channel of the cover plate.

[0007] As a further improvement of the present technical solution, a motor is arranged on the support plate, the output shaft of the motor is arranged vertically, a coaxial fixed sleeve is provided with a gear 1 at the output shaft end of the motor, a coaxial fixed sleeve is provided outside the outer mold shell with a gear ring, the gear ring is meshed with gear 1, an air cylinder, a push rod and a piston are arranged on the support frame, the air cylinder is fixed to the bottom of the inner mold body through a fixed plate, the air cylinder is arranged vertically, the bottom of the push rod is fixedly connected to the support frame, the top of the push rod extends vertically upward and extends into the air cylinder, the piston matching sleeve is arranged in the air cylinder and fixedly connected to the top of the push rod, and a demolding mechanism is arranged between the air cylinder and the supporting plate.

[0008] As a further improvement of the present technical solution, the demolding mechanism includes an exhaust pipe and an opening and closing component. One end of the exhaust pipe is connected to the wall of the gas cylinder, and the other end of the exhaust pipe passes through the surface of the supporting plate. The exhaust pipe is provided with multiple exhaust pipes that are evenly surrounded by the periphery of the gas cylinder. An opening and closing component is provided on the exhaust pipe. A top column is matched with a sleeve at the exhaust port of the exhaust pipe. A limiting ring is provided in the fixed sleeve inside the exhaust pipe. The limiting ring is close to the exhaust port of the exhaust pipe, and the top column is above the limiting ring.

[0009] As a further improvement of the present technical solution, an opening and closing component 1 includes a connecting shell, a support plate 1, a baffle, a support plate 2, and a guide column. The connecting shell is connected to an exhaust pipe 1. The connecting shell is a rectangular shell with an open end and a closed end. The connecting shell is horizontally arranged. The support plate 1 is fixed to the wall of the connecting shell. The baffle is matched and plugged into the connecting shell. The support plate 2 is fixed to the end of the baffle. One end of the guide column is fixedly connected to the support plate 2. The other end of the guide column passes through the plate surface of the support plate 1 and is provided with a baffle. A spring 1 is sleeved on the guide column. One end of the spring 1 contacts with the support plate 1, and the other end of the spring 1 contacts with the support plate 2. A through hole is opened on the plate surface of the baffle. In the initial state, the connecting shell is in a closed state.

[0010] As a further improvement of the present technical solution, a mounting plate is fixedly provided at the end of the baffle plate, and a trigger plate is connected to the mounting plate through a connecting assembly, and the connecting assembly includes a rotating shaft, a second gear, a third support plate, a fourth support plate, a guide rod, and a rack, and the trigger plate is rotatably connected to the mounting plate through the rotating shaft, and the second gear is coaxially fixedly sleeved on the end of the rotating shaft, the third support plate and the fourth support plate are fixed on the plate surface of the mounting plate, and the guide rod is horizontally fixed between the third support plate and the fourth support plate, and two guide rods are provided and arranged in parallel, and the rack is sleeved on the guide rod through a sliding sleeve, and a spring second is sleeved on the guide rod, one end of the spring second contacts with the third support plate, and the other end of the spring second contacts with the sliding sleeve, and the second gear is meshed with the rack, and in the initial state, the end of the rack contacts with the fourth support plate, and the trigger plate is in a horizontal state.

[0011] As a further improvement of the technical solution, a connecting plate is vertically fixed on the inner wall of the outer mold shell, a guide plate is provided on the wall of the connecting plate, the guide plate is close to the bottom of the connecting plate, the upper end surface of the guide plate is inclined, and the trigger plate is directly above the connecting plate.

[0012] As a further improvement of the present technical solution, a cleaning mechanism is provided on the air cylinder, the cleaning mechanism includes an exhaust pipe 2 and an opening and closing component 2, one end of the exhaust pipe 2 is connected to the wall of the air cylinder, the other end of the exhaust pipe 2 is connected to two branch pipes, the exhaust port of one branch pipe passes through the plate surface of the supporting plate, and the other branch pipe passes through the bottom center of the inner mold body, multiple exhaust pipes 2 are provided, and the opening and closing component 2 is provided on the exhaust pipe 2, and the structure of the opening and closing component 2 is the same as that of the opening and closing component 1.

[0013] As a further improvement of the technical solution, a trigger block is vertically arranged on the top surface of the baffle of the opening and closing component 2, and a push rod is fixedly connected to the end of the baffle, and the push rod is close to the trigger block. In the initial state, the opening and closing component 2 is in a closed state.

[0014] As a further improvement of the technical solution, the top of the cover plate is connected to an exhaust pipe.

[0015] Compared with the prior art, the present invention has the following progress and advantages: during the use of the present invention, when the twisted sheet tube is cast, the cover plate is opened, and the lifting mechanism drives the inner mold body to move downward, and the compressed high-pressure gas can be discharged through the exhaust pipe, thereby lifting the top column, and then the top column lifts the casting, and the upper end of the casting extends out of the outer mold shell, so that the casting is easy to take out;

[0016] When the casting is taken out, the lifting mechanism drives the inner mold body to reset, the opening and closing component 2 is in the open state, and the gas in the gas storage cylinder can be discharged through the exhaust pipe 2, so as to blow and cool the inner wall of the outer mold shell, and clean the impurities on the inner wall of the outer mold shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the installation of the inner mold body of the present invention.

[0020] Figure 3 It is a schematic diagram of installing the gas storage cylinder of the present invention.

[0021] Figure 4 It is a schematic diagram of the cooperation between the air storage cylinder, the demoulding mechanism and the cleaning mechanism of the present invention.

[0022] Figure 5 It is a schematic diagram of the connection between the exhaust pipe 1 and the exhaust pipe 2 of the present invention.

[0023] Figure 6 It is a schematic diagram of the opening and closing component 1 and the opening and closing component 2 of the present invention.

[0024] Figure 7 It is a schematic diagram of the cooperation between the trigger plate, the connecting plate and the guide plate of the present invention.

[0025] Figure 8It is a schematic diagram of the cooperation between the push rod and the opening and closing component 2 of the present invention.

[0026] Fig. 9 It is a schematic diagram of the opening and closing component of the present invention.

[0027] Fig.10 It is a schematic diagram of the connection assembly of the present invention.

[0028] The figure shows:

[0029] 10. Support plate; 110. Outer mold shell; 111. Cover plate; 112. Injection shell; 113. Exhaust pipe; 114. Carrying plate; 115. Connecting plate; 116. Guide plate; 120. Support frame; 130. Lifting mechanism; 140. Motor; 141. Gear 1; 142. Gear ring; 150. Inner mold body; 160. Air reservoir; 161. Ejector rod; 162. Piston; 163. Fixing plate;

[0030] 20. demoulding mechanism; 210. exhaust pipe 1; 211. limit ring; 212. top column; 220. opening and closing component 1; 221. connecting shell; 222. support plate 1; 223. baffle plate; 224. support plate 2; 225. guide column; 226. mounting plate; 227. trigger plate; 228. push rod; 230. connecting component; 231. rotating shaft; 232. gear 2; 233. support plate 3; 234. support plate 4; 235. guide rod; 236. rack;

[0031] 30. Cleaning mechanism; 310. Exhaust pipe 2; 320. Opening and closing component 2; 321. Trigger block. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0033] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0034] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figure 1-Figure 10 As shown, a vertical centrifugal casting device for twisted sheet tubes, comprising:

[0037] The support plate 10, the outer mold shell 110, the support frame 120, the lifting mechanism 130, and the inner mold body 150, the outer mold shell 110 is a cylindrical structure with openings at both ends, the outer mold shell 110 passes through the center of the support plate 10, the outer mold shell 110 is arranged vertically, the support frame 120 is fixed to the bottom of the outer mold shell 110, and the outer mold shell 110 is coaxially fixed with a bearing plate 114, the bearing plate 114 is a circular plate body, the inner mold body 150 is sleeved in the outer mold shell 110, the bearing plate 114 is between the inner mold body 150 and the outer mold shell 110, and the lifting mechanism 130 (which is a prior art and is not described in detail) is arranged on the support plate 10. On the support frame 120, the power output end of the lifting mechanism 130 is fixedly connected to the bottom of the inner mold body 150. The lifting mechanism 130 can drive the inner mold body 150 to move up and down in the outer mold shell 110. The top open end of the outer mold shell 110 is matched with a cover plate 111, and the cover plate 111 can be opened and closed. An injection shell 112 is arranged on the top of the cover plate 111. A drainage channel is opened through the plate surface of the cover plate 111. The injection shell 112 is connected with the drainage channel of the cover plate 111. The casting raw material flows into the outer mold shell 110 through the injection shell 112, and the inner mold body 150 and the outer mold shell 110 cooperate to cast the twisted sheet tube.

[0038] More specifically, a motor 140 is provided on the support plate 10, and the output shaft of the motor 140 is arranged vertically. A gear 141 is coaxially fixedly sleeved at the output shaft end of the motor 140, and a gear ring 142 is coaxially fixedly sleeved outside the outer mold shell 110, and the gear ring 142 is meshed with the gear 141. An air cylinder 160, a push rod 161, and a piston 162 are provided on the support frame 120. The air cylinder 160 is fixed to the bottom of the inner mold body 150 through a fixing plate 163. The air cylinder 160 is arranged vertically, and the bottom of the push rod 161 is fixedly connected to the support frame 120, and the top of the push rod 161 extends vertically upward and extends into the air cylinder 160. The piston 162 is matchedly sleeved in the air cylinder 160 and fixedly connected to the top of the push rod 161, and a demolding mechanism 20 is provided between the air cylinder 160 and the supporting plate 114.

[0039] like Figure 3-Figure 8 As shown, the demoulding mechanism 20 includes an exhaust pipe 210 and an opening and closing component 220. One end of the exhaust pipe 210 is connected to the wall of the air storage cylinder 160, and the other end of the exhaust pipe 210 passes through the plate surface of the supporting plate 114. The exhaust pipe 210 is provided with multiple exhaust pipes 210 and is evenly surrounded by the periphery of the air storage cylinder 160. The exhaust pipe 210 is provided with an opening and closing component 220. The exhaust port of the exhaust pipe 210 is matched with a top column 212. The exhaust pipe 210 is fixedly sleeved with a limiting ring 211. The limiting ring 211 is close to the exhaust port of the exhaust pipe 210, and the top column 212 is above the limiting ring 211.

[0040] More specifically, the opening and closing component 220 includes a connecting shell 221, a support plate 222, a baffle 223, a support plate 224, and a guide column 225. The connecting shell 221 is connected to the exhaust pipe 210. The connecting shell 221 is a rectangular shell with one end open and the other end closed. The connecting shell 221 is horizontally arranged, the support plate 222 is fixed to the wall of the connecting shell 221, the baffle 223 is matched and plugged into the connecting shell 221, the support plate 224 is fixed to the end of the baffle 223, one end of the guide column 225 is fixedly connected to the support plate 224, the other end of the guide column 225 passes through the plate surface of the support plate 222 and is provided with a baffle, a spring 1 is sleeved on the guide column 225, one end of the spring 1 contacts the support plate 222, and the other end of the spring 1 contacts the support plate 224, a through hole is opened on the plate surface of the baffle 223, and in the initial state, the connecting shell 221 is in a closed state.

[0041] More specifically, a mounting plate 226 is fixedly provided at the end of the baffle 223, and a trigger plate 227 is connected to the mounting plate 226 through a connecting assembly 230. The connecting assembly 230 includes a rotating shaft 231, a gear 232, a support plate 3 233, a support plate 4 234, a guide rod 235, and a rack 236. The trigger plate 227 is rotatably connected to the mounting plate 226 through the rotating shaft 231, and the gear 232 is coaxially fixedly sleeved on the end of the rotating shaft 231. The support plates 3 233 and 4 234 are fixed to the mounting plate 226. On the plate surface of plate 226, guide rod 235 is horizontally fixed between support plate three 233 and support plate four 234. Two guide rods 235 are provided and arranged in parallel. Rack 236 is sleeved on guide rod 235 through a sliding sleeve. Spring 2 is sleeved on guide rod 235. One end of spring 2 is in contact with support plate three 233, and the other end of spring 2 is in contact with the sliding sleeve. Gear 232 is meshed with rack 236. In the initial state, the end of rack 236 is in contact with support plate four 234, and trigger plate 227 is in a horizontal state.

[0042] More specifically, a connecting plate 115 is vertically fixedly provided on the inner wall of the outer mold shell 110, and a guide plate 116 is provided on the wall of the connecting plate 115. The guide plate 116 is close to the bottom of the connecting plate 115, and the upper end surface of the guide plate 116 is arranged obliquely. The trigger plate 227 is located directly above the connecting plate 115. When the twisted sheet tube is cast, the cover plate 111 is opened, and then the lifting mechanism 130 drives the inner mold body 150 to move downward, thereby driving the casting to rotate and separate from the inner mold body 150. During the downward movement of the inner mold body 150, the gas cylinder 160 is driven downward, so that the piston 162 moves upward in the gas cylinder 160, thereby compressing the gas cylinder 16 0, when the gas storage cylinder 160 moves downward, the opening and closing component 220 moves downward, and then the trigger plate 227 contacts the plate surface of the connecting plate 115, thereby driving the trigger plate 227 to rotate clockwise. When the opening and closing component 220 continues to move downward, the end of the baffle 223 contacts the upper end surface of the guide plate 116, thereby driving the baffle 223 to move in the connecting shell 221, so that the connecting shell 221 is opened. At this time, the compressed high-pressure gas can be discharged through the exhaust pipe 210, thereby lifting the top column 212, and then the top column 212 lifts the casting, and the upper end of the casting extends out of the outer mold shell 110, thereby facilitating the removal of the casting.

[0043] like Figure 3-Figure 9As shown, a cleaning mechanism 30 is provided on the air cylinder 160, and the cleaning mechanism 30 includes an exhaust pipe 2 310 and an opening and closing component 2 320. One end of the exhaust pipe 2 310 is connected to the wall of the air cylinder 160, and the other end of the exhaust pipe 2 310 is connected to two branch pipes. The exhaust port of one branch pipe passes through the plate surface of the supporting plate 114, and the other branch pipe passes through the bottom center of the inner mold body 150. A plurality of exhaust pipes 2 310 are provided, and the opening and closing component 2 320 is provided on the exhaust pipe 2 310. The structure of the opening and closing component 2 320 is the same as that of the opening and closing component 1 220.

[0044] More specifically, the top surface of the baffle 223 of the opening and closing component 2 320 is vertically provided with a trigger block 321, and the end of the baffle 223 is fixedly connected to the push rod 228, and the push rod 228 is close to the trigger block 321. In the initial state, the opening and closing component 2 320 is in a closed state, and the opening and closing component 1 220 moves downward. During the process of the end of the baffle 223 and the upper end surface of the guide plate 116, the baffle 223 of the opening and closing component 1 220 moves in the connecting shell 221. At this time, the push rod 228 does not contact the trigger block 321. When the casting is taken out, the elevator The structure 130 drives the inner mold body 150 to reset, and then the trigger plate 227 contacts the plate surface of the connecting plate 115, thereby driving the trigger plate 227 to reset and be horizontal, and then the connecting plate 115 drives the trigger plate 227 and the baffle 223 to move, so that the push rod 228 contacts the trigger block 321, so that the opening and closing component 320 is in an open state, and the gas in the gas storage cylinder 160 can be discharged through the exhaust pipe 310, so as to blow and cool the inner wall of the outer mold shell 110, and the impurities on the inner wall of the outer mold shell 110 can be blown and cleaned.

[0045] More specifically, the top of the cover plate 111 is connected to an exhaust pipe 113 .

[0046] Working principle:

[0047] During the use of the present invention, the casting raw material flows into the outer mold shell 110 through the injection shell 112, and the inner mold body 150 cooperates with the outer mold shell 110 to cast the twisted sheet tube. The motor 140 drives the outer mold shell 110 to rotate, thereby centrifugally casting the twisted sheet tube. When the twisted sheet tube is cast, the cover plate 111 is opened, and then the lifting mechanism 130 drives the inner mold body 150 to move downward, thereby driving the casting to rotate and separate from the inner mold body 150. During the downward movement of the inner mold body 150, the gas storage cylinder 160 is driven to move downward. , so that the piston 162 moves up in the gas cylinder 160, thereby compressing the gas in the gas cylinder 160. When the gas cylinder 160 moves down, the opening and closing component 220 moves down, and then the trigger plate 227 contacts the plate surface of the connecting plate 115, thereby driving the trigger plate 227 to rotate clockwise. When the opening and closing component 220 continues to move down, the end of the baffle 223 contacts the upper end surface of the guide plate 116, thereby driving the baffle 223 to move in the connecting shell 221, thereby opening the connecting shell 221. At this time, the compressed high pressure The gas can be discharged through the exhaust pipe 210, thereby lifting the top column 212, and then the top column 212 lifts the casting, and the upper end of the casting extends out of the outer mold shell 110, so as to facilitate the removal of the casting; the opening and closing component 220 moves downward, and the end of the baffle 223 contacts the upper end surface of the guide plate 116. The baffle 223 of the opening and closing component 220 moves in the connecting shell 221. At this time, the push rod 228 does not contact the trigger block 321. When the casting is taken out, the lifting mechanism 130 drives the inner mold body 150 is reset, and then the trigger plate 227 contacts the surface of the connecting plate 115, thereby driving the trigger plate 227 to reset and be horizontal, and then the connecting plate 115 drives the trigger plate 227 and the baffle 223 to move, so that the push rod 228 contacts the trigger block 321, so that the opening and closing component 320 is in an open state, and the gas in the gas storage cylinder 160 can be discharged through the exhaust pipe 310, so as to blow and cool the inner wall of the outer mold shell 110, and the impurities on the inner wall of the outer mold shell 110 can be blown and cleaned.

[0048] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A vertical centrifugal casting device for twisted sheet tubes, characterized in that: It includes: A support plate, an outer mold shell, a support frame, a lifting mechanism, and an inner mold body. The outer mold shell is a cylindrical structure with openings at both ends. The outer mold shell passes through the center of the support plate, and the outer mold shell is arranged vertically. The support frame is fixed to the bottom of the outer mold shell. A bearing plate is coaxially fixedly sleeved in the outer mold shell. The bearing plate is a circular plate body. The inner mold body is sleeved in the outer mold shell. The bearing plate is between the inner mold body and the outer mold shell. The lifting mechanism is arranged on the support frame. The power output end of the lifting mechanism is fixedly connected to the bottom of the inner mold body. The lifting mechanism can drive the inner mold body to move up and down in the outer mold shell. A cover plate is matched with the top open end of the outer mold shell. The cover plate can be opened and closed. An injection shell is arranged on the top of the cover plate. A drainage channel is opened through the plate surface of the cover plate. The injection shell is connected to the drainage channel of the cover plate. A motor is arranged on the support plate, the output shaft of the motor is arranged vertically, a coaxial fixed sleeve is provided with a gear 1 on the output shaft end of the motor, a coaxial fixed sleeve outside the outer mold shell is provided with a gear ring, the gear ring is meshed with the gear 1, an air cylinder, a push rod, and a piston are arranged on the support frame, the air cylinder is fixed to the bottom of the inner mold body through a fixed plate, the air cylinder is arranged vertically, the bottom of the push rod is fixedly connected to the support frame, the top of the push rod extends vertically upward and extends into the air cylinder, the piston matching sleeve is arranged in the air cylinder and is fixedly connected to the top of the push rod, and a demoulding mechanism is arranged between the air cylinder and the bearing plate; The demoulding mechanism comprises an exhaust pipe 1 and an opening and closing component 1. One end of the exhaust pipe 1 is connected to the wall of the gas storage cylinder, and the other end of the exhaust pipe 1 passes through the plate surface of the bearing plate. The exhaust pipe 1 is provided with a plurality of exhaust pipes and evenly surrounds the periphery of the gas storage cylinder. The exhaust pipe 1 is provided with an opening and closing component 1. The exhaust port of the exhaust pipe 1 is matched with a top column. The exhaust pipe 1 is fixedly provided with a limiting ring. The limiting ring is close to the exhaust port of the exhaust pipe 1, and the top column is located above the limiting ring. The opening and closing component 1 includes a connecting shell, a support plate 1, a baffle, a support plate 2, and a guide column. The connecting shell is connected to the exhaust pipe 1. The connecting shell is a rectangular shell with one end open and the other end closed. The connecting shell is arranged horizontally. The support plate 1 is fixed to the wall of the connecting shell. The baffle is matched and plugged into the connecting shell. The support plate 2 is fixed to the end of the baffle. One end of the guide column is fixedly connected to the support plate 2. The other end of the guide column passes through the plate surface of the support plate 1 and is provided with a baffle. A spring 1 is sleeved on the guide column. One end of the spring 1 contacts the support plate 1, and the other end of the spring 1 contacts the support plate 2. A through hole is provided on the plate surface of the baffle. In the initial state, the connecting shell is in a closed state. A mounting plate is fixedly provided at the end of the baffle. A trigger plate is connected to the mounting plate through a connecting component. The connecting assembly includes a rotating shaft, a second gear, a third support plate, a fourth support plate, a guide rod, and a rack. The trigger plate is rotatably connected to the mounting plate through the rotating shaft. The second gear is coaxially fixedly sleeved on the end of the rotating shaft. The third support plate and the fourth support plate are fixed on the plate surface of the mounting plate. The guide rod is horizontally fixed between the third support plate and the fourth support plate. Two guide rods are provided and are arranged in parallel. The rack is sleeved on the guide rod through a sliding sleeve. A spring second is sleeved on the guide rod. One end of the spring second contacts the third support plate, and the other end of the spring second contacts the sliding sleeve. The second gear meshes with the rack. In the initial state, the end of the rack contacts the fourth support plate, and the trigger plate is in a horizontal state. A connecting plate is vertically fixedly provided on the inner wall of the outer mold shell, and a guide plate is provided on the wall of the connecting plate. The guide plate is close to the bottom of the connecting plate, and the upper end surface of the guide plate is inclined. The trigger plate is located directly above the connecting plate. A cleaning mechanism is provided on the air cylinder, and the cleaning mechanism includes an exhaust pipe 2 and an opening and closing component 2. One end of the exhaust pipe 2 is connected to the wall of the air cylinder, and the other end of the exhaust pipe 2 is connected to two branch pipes. The exhaust port of one branch pipe passes through the plate surface of the supporting plate, and the other branch pipe passes through the bottom center of the inner mold body. Multiple exhaust pipes 2 are provided, and the opening and closing component 2 is provided on the exhaust pipe 2. The structure of the opening and closing component 2 is the same as that of the opening and closing component 1. A trigger block is vertically provided on the top surface of the baffle of the opening and closing component 2, and a push rod is fixedly connected to the end of the baffle. The push rod is close to the trigger block. In the initial state, the opening and closing component 2 is in a closed state.

2. A vertical centrifugal casting device for twisted sheet tubes according to claim 1, characterized in that: The top of the cover plate is connected with an exhaust pipe.

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