Manufacturing equipment for conical end socket of chemical storage tank

Abstract

The manufacturing equipment for the conical end socket of the chemical storage tank comprises a base, a supporting rod is fixedly connected to the top of the base, a conical mold is installed at the top of the supporting rod, a supplementing groove is formed in the conical mold, and an extrusion mechanism is fixedly installed at the top of a connecting plate; a hydraulic oil conveying mechanism is fixedly connected to the top of the base, a hot oil conveying mechanism used for providing hot oil is arranged at the top of the base, and a self-adjusting mechanism is installed on the outer side of the hot oil conveying mechanism; the self-adjusting mechanism can adjust the supply amount of hydraulic oil and hot oil in a self-adaptive mode, the blank locally protrudes to enable hot oil to be pressed, an arc-shaped block is pushed to move outwards, an opening of an oil inlet pipe is enlarged to accelerate hot oil circulation, the temperature is increased, the feed amount is reduced to reduce cold stress borne by the blank, and an adjusting block enables a communicating pipe to be shrunk to reduce the backflow speed of the hydraulic oil and the feed amount of a hydraulic rod. After the bulge disappears, the arc-shaped block is reset, and each parameter returns to normal.

Description

Technical Field

[0001] The invention relates to the technical field of conical end caps, in particular to a manufacturing device for conical end caps of chemical storage tanks. Background Art

[0002] Chemical storage tanks are generally divided into three categories. The first category is metal storage tanks, including carbon steel storage tanks, stainless steel storage tanks, aluminum storage tanks, etc. The second category is non-metallic storage tanks, including plastic storage tanks, ceramic storage tanks, and fiberglass storage tanks. The third category is metal-non-metal composite storage tanks, including steel-lined PTFE storage tanks, steel-lined polyethylene storage tanks, steel-lined polyolefin storage tanks, steel-lined rubber storage tanks, etc. In the field of chemical technology, storage tanks have been widely used. Since a large amount of chemical raw materials need to be loaded in the storage tanks, these chemical raw materials are highly corrosive, which requires the material of the storage tank to be plastic, and the two ends of the storage tank are generally welded with heads. The conical head is a kind of head. The conical head is a conical device used to seal chemical storage tanks. It is widely used in petrochemical, pharmaceutical, aerospace, nuclear power, shipbuilding, steel, boiler pressure vessel and other manufacturing industries. The material for manufacturing the conical head can be carbon steel, low alloy steel, composite plate, stainless steel, copper, aluminum, titanium and other non-ferrous metals.

[0003] The existing conical heads are manufactured by spinning. Spinning is to fix a flat blank or a pre-formed blank on the core mold of a spinning machine, and the main shaft drives the core mold and the blank to rotate. At the same time, a spinning wheel is used to apply pressure to the blank so that the blank gradually sticks to the core mold, thereby forming the desired conical head shape. The spinning process is a gradual and continuous deformation process. The material gradually changes shape under the action of the spinning wheel. Since spin forming is a repeated rolling operation on the blank, the head will produce a large cold working stress during the production process. Secondly, during the rolling operation, due to the presence of convex points on the blank itself and local bulges in the blank during the rolling plastic process, if the feed speed is not changed and the blank is heated, and the local bulges and convex points on it are forcibly flattened, the cold stress at that position will be greater, thereby affecting the quality of the head.

[0004] Therefore, a manufacturing device for a conical head of a chemical storage tank is proposed. Summary of the invention

[0005] The object of the present invention is to provide a manufacturing device for a conical end cap of a chemical storage tank, so as to solve the problem that the end cap will generate large cold working stress as mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a manufacturing device for a conical head of a chemical storage tank, comprising a base, a support rod is fixedly connected to the top of the base, a conical mold is installed on the top of the support rod, and a supplementary tank for storing hot oil is opened inside the conical mold; A first hydraulic rod is fixedly connected to the top of the base, a second hydraulic rod is fixedly installed on the output end of the first hydraulic rod, and a connecting plate is fixedly installed on the output end of the second hydraulic rod; The top of the connecting plate is fixedly installed with an extrusion mechanism for plasticizing the blank and detecting the presence of protruding points on the blank, the extrusion mechanism includes a driving motor, the output end of the driving motor is fixedly connected to an oil frame, the outer side of the oil frame is rotatably provided with a fixed frame, the fixed frame is fixedly connected to the bottom of the connecting plate through a connecting column, the inside of the oil frame is fixedly connected to a limiting block, the inside of the limiting block is fixedly connected to a limiting cylinder, the inside of the limiting block is slidably connected to an extrusion head for extruding the blank, the fixed frame and the oil frame are both provided with a connecting groove, the fixed frame and the oil frame are connected through the connecting groove, and the limiting cylinder is connected to the oil frame after passing through the limiting block; A hydraulic oil delivery mechanism for providing hydraulic oil to the first hydraulic rod and the second hydraulic rod is fixedly connected to the top of the base; A hot oil delivery mechanism for providing hot oil is provided on the top of the base; A self-adjusting mechanism for adaptively adjusting the supply amount of hydraulic oil and hot oil according to the extrusion force of the extrusion head on the blank is installed on the outer side of the hot oil conveying mechanism. The self-adjusting mechanism includes an adjusting frame, and an arc block for controlling the flow rate of hot oil is slidably connected to the inside of the adjusting frame. A connecting rod is fixedly connected to the outer side of the arc block, and the connecting rod passes through the adjusting frame and is arranged on the outer side of the adjusting frame. The other side of the connecting rod passes through the movable groove and is arranged inside the connecting frame. An adjusting block for adjusting the feed amount of the conducting pipe after movement is arranged on the outer side of the connecting rod, and a skin for preventing hydraulic oil leakage is fixedly connected between the connecting rod and the movable groove.

[0007] Preferably: the hydraulic oil delivery mechanism includes a hydraulic oil storage cylinder fixedly connected to the base for storing hydraulic oil, a connecting frame fixedly connected to the top of the base, a partition is arranged inside the connecting frame, a hydraulic oil pump is arranged on one side of the partition, the oil inlet of the hydraulic oil pump is connected with the hydraulic oil storage cylinder through a pipeline, the oil outlet of the hydraulic oil pump is connected with the other side of the partition through a pipeline, the connecting frame is connected with the first hydraulic rod through a conducting pipe, the first hydraulic rod and the second hydraulic rod are connected by a connecting pipe, and the connecting frame is provided with a movable groove in the space located on the other side of the partition.

[0008] Preferably: the hot oil delivery mechanism includes a heating and delivery component fixedly connected to the top of the base, the heating and delivery component includes a storage tank, a hot oil pump and a heater, the storage tank is used to store hot oil, the hot oil pump is used to deliver hot oil, the heater is used to heat the hot oil, the oil outlet of the hot oil pump is fixedly connected with an oil outlet pipe, the oil outlet pipe passes through the conical mold and is connected to the replenishing tank, the fixed frame is connected to the replenishing tank through a connecting pipe, and the fixed frame is connected to the storage tank through an oil inlet pipe.

[0009] Preferably: a sealing ring for preventing hot oil from leaking is arranged on the outer side wall of the limit block, a sealing groove is opened inside the limit cylinder, a sealing block is arranged on the top of the extrusion head, and the sealing block is slidably connected inside the sealing groove.

[0010] Preferably, the regulating frame divides the oil inlet pipe to adjust the connection state between the oil inlet pipe and the storage tank through the regulating frame and the arc block.

[0011] Preferably: a limiting groove is provided inside the adjusting frame, a slider is fixedly connected to the bottom of the arc block, the arc block is connected to the inside of the adjusting frame by sliding and limiting the slider, and an elastic member is also provided between the arc block and the adjusting frame.

[0012] Preferably, a motor may be further provided on the top of the base, and an output end of the motor is connected to the conical mold for controlling the rotation of the conical mold.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the precise plasticity and protrusion point detection functions of the blank are realized through the extrusion mechanism. The driving motor in the extrusion mechanism drives the oil frame, the limit block and the limit cylinder to rotate, so that the extrusion head rotates to spin-form the blank. At the same time, during the extrusion process, if there are protrusion points in the blank, additional extrusion force will be applied to the extrusion head. The protrusion points on the blank can be detected by the pressure change of the extrusion head. The extrusion head descends and extrude the blank under the action of hydraulic oil. Due to the action of hot oil in the limit cylinder, it can ensure that all extrusion heads apply the same pressure to the blank, so that the blank is accurately pressed against the inner wall of the conical mold to achieve precise plasticity.

[0014] In the present invention, the function of reducing the cold stress of the blank is achieved through the hot oil conveying mechanism. The heating and conveying component in the hot oil conveying mechanism heats the hot oil in the storage tank and then conveys it through a hot oil pump. The hot oil first enters the replenishing groove of the conical mold to provide heat for the mold and the blank and increase the temperature of the blank. Then the hot oil flows into the fixed frame, the oil frame and the limit cylinder to form a circulation system, so that the hot oil continues to heat the extrusion head and the blank. During the spin forming process, the extrusion head and the blank are heated by the hot oil, which minimizes the cold stress on the blank and improves the quality of the conical head.

[0015] In the present invention, the function of adaptively adjusting the supply of hydraulic oil and hot oil is realized through the self-adjusting mechanism: when a local protrusion appears on the blank and applies additional extrusion force to the extrusion head, the hot oil in the limit cylinder is pressurized, and the pressure of the hot oil passing through the adjustment frame rises, pushing the arc block to move outward. The movement of the arc block enlarges the openings of the oil inlet pipes inside and outside the adjustment frame, accelerates the hot oil circulation speed, increases the temperature of the conical mold and the extrusion head, and reduces the cold stress at the protrusion position; at the same time, the arc block drives the adjustment block to move through the connecting rod, so that the pipe opening of the guide pipe is reduced, the hydraulic oil reflux speed inside the first hydraulic rod and the second hydraulic rod is reduced, and their movement speed and feed rate are reduced, and the protruding part of the blank is extruded and formed multiple times. When the protruding part of the blank is spun and plasticized, the elastic member pushes the arc block to reset, and the hot oil circulation speed, hydraulic oil flow rate and hydraulic rod feed rate are all restored to normal, thereby realizing the function of adaptively adjusting the supply of hydraulic oil and hot oil according to the extrusion force of the extrusion head on the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall structural view of the present invention; Figure 2 It is an overall cross-sectional view of the present invention; Figure 3 It is a connection diagram of the hot oil delivery mechanism and the hydraulic oil delivery mechanism of the present invention; Figure 4 It is a schematic diagram of the connection between the hot oil delivery mechanism and the hydraulic oil delivery mechanism of the present invention from another perspective; Figure 5 It is a cross-sectional structural schematic diagram of the adjustment frame and the connection frame of the present invention; Figure 6 It is a schematic diagram of the connection of the extrusion mechanism of the present invention; Figure 7 It is a cross-sectional structural schematic diagram of the fixing frame and the oil frame of the present invention; Figure 8 An exploded view of the internal parts of the extrusion mechanism of the present invention; Fig. 9 For the present invention Figure 5 A magnified view of A in FIG. Fig.10 For the present invention Figure 5 Magnified view of B in .

[0017] In the figure: 1. Base; 2. Conical mold; 21. Supplementary slot; 3. Support rod; 4. First hydraulic rod; 5. Second hydraulic rod; 51. Connecting plate; 6. Extrusion mechanism; 61. Driving motor; 62. Fixed frame; 63. Oil frame; 64. Connecting column; 65. Limit block; 66. Limit cylinder; 67. Extrusion head; 68. Connecting groove; 7. Self-adjusting mechanism; 71. Adjusting frame; 72. Arc block; 73. Connecting rod; 74. Adjusting block; 8. Hot oil delivery mechanism; 81. Heating and delivery assembly; 82. Oil inlet pipe; 83. Oil outlet pipe; 84. Connecting pipe; 9. Hydraulic oil delivery mechanism; 91. Hydraulic oil storage cylinder; 92. Connection frame; 93. Conducting pipe; 94. Connecting pipe; 95. Moving groove; 96. Skin; 97. Hydraulic oil pump. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1 to 10 The present invention provides a technical solution for manufacturing equipment for a conical head of a chemical storage tank: A manufacturing device for a conical end cap of a chemical storage tank comprises a base 1, a support rod 3 is fixedly connected to the top of the base 1, a conical mold 2 is installed on the top of the support rod 3, and a supplementary tank 21 for storing hot oil is opened inside the conical mold 2; A first hydraulic rod 4 is fixedly connected to the top of the base 1, a second hydraulic rod 5 is fixedly installed at the output end of the first hydraulic rod 4, and a connecting plate 51 is fixedly installed at the output end of the second hydraulic rod 5; An extrusion mechanism 6 for plasticizing the blank and detecting the protruding points on the blank is fixedly installed on the top of the connecting plate 51. The extrusion mechanism 6 includes a driving motor 61. The output end of the driving motor 61 is fixedly connected to an oil frame 63. A fixed frame 62 is rotatably arranged on the outer side of the oil frame 63. The fixed frame 62 is fixedly connected to the bottom of the connecting plate 51 through a connecting column 64. The inside of the oil frame 63 is fixedly connected to a limiting block 65. The inside of the limiting block 65 is fixedly connected to a limiting cylinder 66. The inside of the limiting block 65 is slidably connected to an extrusion head 67 for extruding the blank. A connecting groove 68 is provided on the fixing frame 62 and the oil frame 63. The fixing frame 62 and the oil frame 63 are connected through the connecting groove 68. The limiting cylinder 66 passes through the limiting block 65 and is connected to the oil frame 63. A hydraulic oil delivery mechanism 9 for providing hydraulic oil to the first hydraulic rod 4 and the second hydraulic rod 5 is fixedly connected to the top of the base 1; A hot oil delivery mechanism 8 for providing hot oil is provided on the top of the base 1; A self-adjusting mechanism 7 for adaptively adjusting the supply amount of hydraulic oil and hot oil according to the extrusion force of the billet by the extrusion head 67 is installed on the outer side of the hot oil conveying mechanism 8. The self-adjusting mechanism 7 includes an adjusting frame 71. The adjusting frame 71 is internally slidably connected with an arc block 72 for controlling the flow rate of hot oil. A connecting rod 73 is fixedly connected to the outer side of the arc block 72. The connecting rod 73 passes through the adjusting frame 71 and is arranged on the outer side of the adjusting frame 71. The other side of the connecting rod 73 passes through the movable groove 95 and is arranged inside the connecting frame 92. An adjusting block 74 for adjusting the feed amount of the conducting pipe 93 after movement is arranged on the outer side of the connecting rod 73. A skin 96 for preventing hydraulic oil leakage is fixedly connected between the connecting rod 73 and the movable groove 95.

[0020] As an embodiment of the present invention, Figures 2 to 7 As shown, the hydraulic oil delivery mechanism 9 includes a hydraulic oil storage cylinder 91 fixedly connected to the base 1 for storing hydraulic oil, a connecting frame 92 is fixedly connected to the top of the base 1, a partition is arranged inside the connecting frame 92, a hydraulic oil pump 97 is arranged on one side of the partition, an oil inlet of the hydraulic oil pump 97 is connected to the hydraulic oil storage cylinder 91 through a pipeline, an oil outlet of the hydraulic oil pump 97 is connected to the other side of the partition through a pipeline, the connecting frame 92 is connected to the first hydraulic rod 4 through a connecting pipe 93, the first hydraulic rod 4 and the second hydraulic rod 5 are connected through a connecting pipe 94, a valve is arranged on the connecting pipe 94, and a movable groove 95 is opened in the space on the other side of the partition in the connecting frame 92.

[0021] During operation, first, the blank is placed in the conical mold 2, and lubricating oil is evenly applied on both sides of the blank. Then, the heater and the hot oil pump are turned on to heat the hot oil in the storage tank to a preset temperature under the action of the heater. After the hot oil pump is started, the hot oil is drawn from the storage tank and first delivered to the supplementary tank 21 of the conical mold 2 through the oil outlet pipe 83 to provide necessary heat for the mold and the blank, thereby raising the temperature of the blank. When the supplementary tank 21 is filled with hot oil, the hot oil will flow into the fixed frame 62 through the connecting pipe 84. Since a connecting groove 68 is provided between the fixed frame 62 and the oil frame 63, and the limiting cylinder 66 is connected to the oil frame 63, the hot oil will also flow into the oil frame 63 and the limiting cylinder 66. Once the fixed frame 62, the oil frame 63 and the limiting cylinder 66 are filled with hot oil, the hot oil will return to the storage tank through the oil inlet pipe 82 and the regulating frame 71 to form a complete circulation system. According to actual use requirements, the shape, material and functional requirements of the oil inlet pipe 82 and the connecting pipe 84 are adaptively selected to meet the rationality of normal operation of the equipment.

[0022] As an embodiment of the present invention, Figures 1 to 7As shown, the hot oil conveying mechanism 8 includes a heating and conveying component 81 fixedly connected to the top of the base 1, and the heating and conveying component 81 includes a storage tank, a hot oil pump and a heater. The storage tank is used to store hot oil, the hot oil pump is used to convey hot oil, and the heater is used to heat the hot oil. The oil outlet of the hot oil pump is fixedly connected with an oil outlet pipe 83, and the oil outlet pipe 83 passes through the conical mold 2 and is connected with the replenishing groove 21. The fixed frame 62 is connected with the replenishing groove 21 through a connecting pipe 84, and the fixed frame 62 is connected with the storage tank through an oil inlet pipe 82. A sealing ring for preventing hot oil from leaking is arranged on the outer wall of the limit block 65, a sealing groove is opened inside the limit cylinder 66, and a sealing block is arranged on the top of the extrusion head 67. The sealing block is slidably connected to the inside of the sealing groove, and an elastic member is also arranged between the arc block 72 and the adjustment frame 71.

[0023] During operation, the hydraulic oil pump 97 is then started to first move the first hydraulic rod 4 and the second hydraulic rod 5 to their maximum stroke. At this time, the extrusion head 67 located in the center position is just aligned with the center of the conical mold 2, and then the valve on the connecting pipe 94 is closed, and the first hydraulic rod 4 is controlled to descend through the hydraulic oil pump 97. When the first hydraulic rod 4 descends, it will drive the extrusion head 67 to descend together through the second hydraulic rod 5 and the connecting plate 51 until the extrusion head 67 descends to the lowest point of the conical mold 2 and extrude the blank. Since the limit cylinder 66 is filled with hot oil, the extrusion head 67 will move down to the lowest point. In a closed space, the pressure of the liquid on each location is uniform. Therefore, when the extrusion head 67 extrude the blank to the lowest point, the blank will also contact the inner wall of the conical mold 2. In this way, the pressure applied by all extrusion heads 67 to the blank is the same, thereby ensuring that the extrusion head 67 can accurately press the blank against the inner wall of the conical mold 2. The heating of the extrusion head 67 by hot oil and the heating of the blank by the conical mold 2 can minimize the cold stress of the blank during the spin forming process and improve the quality of the conical head.

[0024] Subsequently, the drive motor 61 is started. After the drive motor 61 rotates, the extrusion head 67 is driven to rotate through the oil frame 63, the limit block 65 and the limit cylinder 66. After the extrusion head 67 rotates, the blank is spin-formed. The valve on the connecting pipe 94 is opened, and then the hydraulic oil pump 97 is controlled. Since the valve on the connecting pipe 94 is opened, the hydraulic oil pump 97 will cause the first hydraulic rod 4 to gradually rise and the second hydraulic rod 5 to gradually retract when pumping oil, so as to gradually feed the blank, thereby realizing the spinning plastic forming of the blank.

[0025] As an embodiment of the present invention, Figures 1 to 10As shown, the adjusting frame 71 separates the oil inlet pipe 82 to adjust the connection state between the oil inlet pipe 82 and the storage tank through the adjusting frame 71 and the arc block 72. The oil inlet pipe 82 is connected to the storage tank after passing through the adjusting frame 71. A limiting groove is provided inside the adjusting frame 71. A slider is fixedly connected to the bottom of the arc block 72. The arc block 72 is connected to the inside of the adjusting frame 71 through the sliding limit of the slider.

[0026] During operation, if the blank has local protrusions, these protruding positions will apply additional extrusion force to the extrusion head 67. As the pressure of the extrusion head 67 increases, the hot oil in the limit cylinder 66 will also be pressurized. At this time, the hot oil pressure passing through the adjustment frame 71 will suddenly rise, causing the hot oil in the adjustment frame 71 to push the arc block 72 to move outward. This action makes the opening of the oil inlet pipe 82 inside and outside the adjustment frame 71 larger, thereby accelerating the circulation speed of the hot oil. The acceleration of the hot oil circulation speed will increase the temperature of the conical die 2, and will also increase the temperature of the extrusion head 67. When the protrusions on the blank are flattened and the degree of deformation increases, the cold stress on the blank will also increase. Therefore, the heating of the conical die 2 helps to increase the heating degree of the blank, while the heating of the extrusion head 67 will increase the heating degree of its processing position, thereby reducing the cold stress at the protruding position; At the same time, the outward movement of the arc block 72 will drive the adjustment block 74 to move through the connecting rod 73. After the adjustment block 74 moves, it will enter the interior of the guiding tube 93, causing the pipe opening of the guiding tube 93 to shrink, thereby reducing the reflux speed of the hydraulic oil inside the first hydraulic rod 4 and the second hydraulic rod 5, which will reduce the movement speed of the first hydraulic rod 4 and the second hydraulic rod 5, reduce their feed amount, and enable multiple extrusion molding of the protruding parts of the blank.

[0027] As the protruding parts of the blank are gradually spun and plasticized, the protruding parts no longer exert additional extrusion force on the extrusion head 67. At this time, the elastic member will push the arc block 72 to return to the initial position, and the circulation speed of the hot oil will return to the original state. After the arc block 72 is reset, it will also drive the adjustment block 74 to return through the connecting rod 73, and the flow rate of the hydraulic oil will be restored, and the feed amount of the first hydraulic rod 4 and the second hydraulic rod 5 will also return to normal.

[0028] In summary, when a bulge appears in the blank, the cold stress on the bulge during spinning can be effectively reduced by locally increasing the temperature and reducing the feed rate.

[0029] As an embodiment of the present invention, a motor may also be provided on the top of the base 1, and the output end of the motor is connected to the conical mold 2 to control the rotation of the conical mold 2 (at this time, the relevant structures are adaptively changed, such as the connection between the connecting pipe 84 and the conical mold 2 is realized by a structure similar to the fixed frame 62 (the connection relationship between the fixed frame 62 and the oil frame 63 has been described in detail above, and will not be repeated here. A gear ring is provided at the bottom of the conical mold 2 to cooperate with a motor containing a gear, and the connection method between the oil outlet pipe 83 and the conical mold 2 and other conventional structural settings).

[0030] During operation, when the volume of the blank is too large, the extrusion head 67 will have difficulty driving the blank to rotate, and the motor-driven conical die 2 rotates, so that the blank is better spin-formed.

[0031] Working principle: during operation, the blank is first placed in the conical mold 2, and lubricating oil is applied to both sides of the blank, and then the heater and the hot oil pump are turned on. The hot oil in the storage tank is heated to the set temperature under the action of the heater, and the hot oil pump is started to extract the hot oil from the storage tank. The hot oil is first transported to the replenishing groove 21 of the conical mold 2 through the oil outlet pipe 83, providing heat for the conical mold 2 and the blank, so that the temperature of the blank is increased. When the replenishing groove 21 is filled with hot oil, the hot oil will enter the fixed frame 62 through the connecting pipe 84. Since a connecting groove 68 is provided between the fixed frame 62 and the oil frame 63, and the limiting cylinder 66 is connected to the oil frame 63, the hot oil will also enter the oil frame 63 and the limiting cylinder 66. When the fixed frame 62, the oil frame 63 and the limiting cylinder 66 are full of hot oil, the hot oil will enter the storage tank through the oil inlet pipe 82 and the regulating frame 71, thereby forming a cycle. Then start the hydraulic oil pump 97, first move the first hydraulic rod 4 and the second hydraulic rod 5 to the maximum stroke, at this time the extrusion head 67 at the center position is just located at the center of the conical die 2, then close the valve on the connecting pipe 94, and control the first hydraulic rod 4 to move downward through the hydraulic oil pump 97. When the first hydraulic rod 4 moves downward, it will drive the extrusion head 67 to move downward through the second hydraulic rod 5 and the connecting plate 51 until the extrusion head 67 moves downward and extrude the blank to the lowest point of the conical die 2. Since the limit cylinder 66 is full of hot oil, it will squeeze the extrusion head 67 down to the lowest point in a closed In the space, the pressure of the liquid on each position is fixed, so when the extrusion head 67 extrude the blank to the lowest point, the blank will also contact the conical die 2 at this time, so all the extrusion heads 67 have the same pressure on the blank, so that it can be ensured that all the extrusion heads 67 accurately press the blank on the inner wall of the conical die 2. The extrusion head 67 is also heated by hot oil. By increasing the temperature of the extrusion head 67 and heating the blank by the conical die 2, it can be ensured that the blank can avoid cold stress to the greatest extent during spin forming, thereby improving the quality of the conical head. Then, the driving motor 61 is started. After the driving motor 61 rotates, the extrusion head 67 can be driven to rotate through the oil frame 63, the limit block 65 and the limit cylinder 66. After the extrusion head 67 rotates, the blank can be spun, and the valve on the connecting pipe 94 is opened. Then, the hydraulic oil pump 97 is controlled. Since the valve on the connecting pipe 94 is opened, the hydraulic oil pump 97 will gradually move up the first hydraulic rod 4 and gradually retract the second hydraulic rod 5 when pumping oil. At this time, the blank can be spun plastic. In the above process, if a local bulge appears on the blank, the bulge position will cause additional extrusion force on the extrusion head 67. When the pressure of the extrusion head 67 increases, the hot oil in the limit cylinder 66 will be pressurized. At this time, the hot oil pressure passing through the adjustment frame 71 will suddenly increase. At this time, the hot oil in the adjustment frame 71 will push the arc block 72 outward, so that the opening of the oil inlet pipe 82 inside and outside the adjustment frame 71 is enlarged, thereby accelerating the circulation speed of the hot oil. When the circulation speed of the hot oil is accelerated, on the one hand, the temperature of the conical mold 2 will be increased. On the other hand, the temperature of the extrusion head 67 will also be increased. When a bulge appears on the blank and the bulge is flattened, the deformation degree of the blank will be increased, thereby increasing the cold stress it is subjected to. Therefore, when the conical mold 2 is heated up, the heating degree of the blank can be increased, and when the extrusion head 67 is heated up, the heating degree of its processing position can be increased, thereby reducing the cold stress of the bulge position; At the same time, when the arc block 72 moves outward, the adjusting block 74 will be driven to move through the connecting rod 73. After the adjusting block 74 moves, it will enter the inside of the conducting pipe 93, thereby reducing the pipe opening of the conducting pipe 93, thereby reducing the hydraulic oil reflux speed inside the first hydraulic rod 4 and the second hydraulic rod 5, thereby reducing the moving speed of the first hydraulic rod 4 and the second hydraulic rod 5, and further reducing the feeding amount of the first hydraulic rod 4 and the second hydraulic rod 5, so that the protruding part of the blank can be extruded for multiple times; When the protruding part of the blank is gradually spun and plasticized, the protruding part will no longer have an additional extrusion force on the extrusion head 67. At this time, the elastic member will push the arc block 72 to return to the initial state, and the circulation speed of the hot oil will be restored to the original state. After the arc block 72 is restored, it will also drive the adjustment block 74 to return to the original state through the connecting rod 73. At this time, the flow rate of the hydraulic oil is also restored, and the first hydraulic rod 4 and the second hydraulic rod 5 return to the normal feed amount. In summary, when a bulge appears in the blank, the cold stress on the bulge during spinning can be reduced by locally increasing the temperature and reducing the feed rate.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A manufacturing device for a conical end cap of a chemical storage tank, comprising a base (1), a support rod (3) fixedly connected to the top of the base (1), a conical mold (2) installed on the top of the support rod (3), characterized in that: The conical mold (2) is provided with a supplementary tank (21) for storing hot oil inside; A first hydraulic rod (4) is fixedly connected to the top of the base (1); a second hydraulic rod (5) is fixedly mounted on the output end of the first hydraulic rod (4); and a connecting plate (51) is fixedly mounted on the output end of the second hydraulic rod (5); An extrusion mechanism (6) for plasticizing the blank and detecting the presence of protruding points on the blank is fixedly installed on the top of the connecting plate (51), the extrusion mechanism (6) comprising a driving motor (61), the output end of the driving motor (61) being fixedly connected to an oil frame (63), a fixed frame (62) being rotatably arranged on the outer side of the oil frame (63), the fixed frame (62) being fixedly connected to the bottom of the connecting plate (51) via a connecting column (64), and the inner side of the oil frame (63) being fixedly connected to the inner side of the oil frame (63). A limit block (65) is connected, the limit block (65) is fixedly connected to a limit cylinder (66) inside, the limit block (65) is slidably connected to an extrusion head (67) for extruding a blank, the fixed frame (62) and the oil frame (63) are both provided with a communication groove (68), the fixed frame (62) and the oil frame (63) are connected via the communication groove (68), and the limit cylinder (66) passes through the limit block (65) and is connected to the oil frame (63); A hydraulic oil delivery mechanism (9) for supplying hydraulic oil to the first hydraulic rod (4) and the second hydraulic rod (5) is fixedly connected to the top of the base (1); A hot oil delivery mechanism (8) for providing hot oil is provided on the top of the base (1); A self-adjusting mechanism (7) for adaptively adjusting the supply amount of hydraulic oil and hot oil according to the extrusion force of the extrusion head (67) on the blank is installed on the outside of the hot oil conveying mechanism (8). The self-adjusting mechanism (7) comprises an adjustment frame (71). An arc block (72) for controlling the flow rate of hot oil is slidably connected inside the adjustment frame (71). A connecting rod (73) is fixedly connected to the outside of the arc block (72). The connecting rod (73) passes through the adjustment frame (71) and is arranged on the outside of the adjustment frame (71). The other side of the connecting rod (73) passes through the movable groove (95) and is arranged inside the connecting frame (92). An adjustment block (74) for adjusting the feeding amount of the conducting pipe (93) after movement is arranged on the outside of the connecting rod (73). A skin (96) for preventing hydraulic oil leakage is fixedly connected between the connecting rod (73) and the movable groove (95).

2. The manufacturing equipment for a conical end cap of a chemical storage tank according to claim 1 is characterized in that: The hydraulic oil delivery mechanism (9) comprises a hydraulic oil storage cylinder (91) fixedly connected to the base (1) for storing hydraulic oil, a connection frame (92) fixedly connected to the top of the base (1), a partition plate provided inside the connection frame (92), a hydraulic oil pump (97) provided on one side of the partition plate, an oil inlet of the hydraulic oil pump (97) connected to the hydraulic oil storage cylinder (91) through a pipeline, an oil outlet of the hydraulic oil pump (97) connected to the other side of the partition plate through a pipeline, the connection frame (92) connected to the first hydraulic rod (4) through a conducting pipe (93), the first hydraulic rod (4) and the second hydraulic rod (5) connected through a connection pipe (94), a valve provided on the connection pipe (94), and a movable groove (95) provided in the space on the other side of the partition plate of the connection frame (92).

3. The manufacturing equipment for a conical end cap of a chemical storage tank according to claim 1 is characterized in that: The hot oil delivery mechanism (8) comprises a heating delivery component (81) fixedly connected to the top of the base (1), the heating delivery component (81) comprising a storage tank, a hot oil pump and a heater, the storage tank being used to store hot oil, the hot oil pump being used to deliver hot oil, the heater being used to heat hot oil, an oil outlet of the hot oil pump being fixedly connected to an oil outlet pipe (83), the oil outlet pipe (83) passing through the conical mold (2) and communicating with the supplementary groove (21), the fixed frame (62) and the supplementary groove (21) being communicated via a communicating pipe (84), and the fixed frame (62) and the storage tank being communicated via an oil inlet pipe (82).

4. The manufacturing equipment for a conical end cap of a chemical storage tank according to claim 1 is characterized in that: A sealing ring for preventing hot oil from leaking is arranged on the outer wall of the limit block (65), a sealing groove is provided inside the limit cylinder (66), and a sealing block is arranged on the top of the extrusion head (67), and the sealing block is slidably connected inside the sealing groove.

5. The manufacturing equipment for a conical end cap of a chemical storage tank according to claim 3 is characterized in that: The regulating frame (71) separates the oil inlet pipe (82) to regulate the connection state between the oil inlet pipe (82) and the storage tank through the regulating frame (71) and the arc block (72).

6. The manufacturing equipment for a conical end cap of a chemical storage tank according to claim 1, characterized in that: A limiting groove is provided inside the adjusting frame (71); a slider is fixedly connected to the bottom of the arc block (72); the arc block (72) is connected to the inside of the adjusting frame (71) by sliding and limiting the slider; and an elastic member is provided between the arc block (72) and the adjusting frame (71).

7. The manufacturing equipment for a conical end cap of a chemical storage tank according to claim 1, characterized in that: A motor may also be provided on the top of the base (1), and an output end of the motor is connected to the conical mold (2) for controlling the rotation of the conical mold (2).

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