Forming die for thin-wall deep barrel with local protrusions

Abstract

The invention relates to the technical field of metal plastic forming, and provides a thin-wall deep barrel forming die with local protrusions, the thin-wall deep barrel forming die comprises a fixing plate, a die body, a cleaning assembly and a measuring assembly, the die body comprises an upper die set and a lower die set, and the lower die set comprises a lower die plate fixedly connected to the top of the fixing plate through bolts; a lower die mounting block is fixedly connected to the top of the lower die plate, a lower die positioning block is fixedly connected to the top of the lower die mounting block, a backing ring is fixedly connected to the top of the lower die positioning block, and a blank and the lower die are preheated through the heating device, so that thermal stress generated by sudden temperature change in the forming process is avoided; the product quality is improved, the service life of the die is prolonged, meanwhile, the cooling speed after the blank is put into the die is reduced, and it is ensured that the blank keeps stable in the forming process.

Description

Technical Field

[0001] The invention relates to the technical field of metal plastic forming, and in particular to a thin-wall deep barrel forming die with local protrusions. Background Art

[0002] At present, there is an urgent need to use high-strength and lightweight components to achieve structural lightweight in many fields. Among these components, cup-shaped components are a very typical one. The drawing process is essentially a process of gradually transferring the material from the edge of the blank to the wall of the cylinder. In this process, the material of the flange part will produce tensile stress in the radial direction due to the effect of the drawing force. At the same time, as the diameter of the flange part gradually decreases, extrusion will occur between the materials, thereby generating compressive stress in the tangential direction. Under the combined action of these two stresses, the metal in the flange part will undergo plastic deformation, radial elongation, and tangential compression, resulting in a reduction in size, and will gradually be pulled into the die hole to form a cylindrical hollow part.

[0003] As a local functional structure, the protrusion usually plays the role of assembly positioning, fixing, riveting, and strengthening the structure. In the prior art, this type of protrusion structure usually adopts a reverse extrusion forming process, but it has disadvantages such as large forming load and many steps. In contrast, the mold size required for the present invention is small, and the load required for forming is greatly reduced, the steps are few, the production cost is reduced, the production efficiency is improved, and the overall comprehensive performance of the forging is guaranteed.

[0004] However, the thin-walled deep tube forming mold in the prior art has the following problems: In the prior art, the coating of lubricating oil on thin-walled deep-tube forming dies often relies on manual or simple mechanical devices, which makes it difficult to achieve uniform coating, resulting in increased friction during the forming process, affecting product quality and die life. In addition, there is a lack of effective monitoring means to promptly detect the problem of uneven coating of lubricating oil, resulting in blind spots in quality control during the production process. 2. Traditional cleaning methods in the prior art often use chemical solvents or mechanical scrubbing, which is difficult to completely remove dirt and residues on the mold surface and is likely to damage the mold. Excess lubricating oil is often difficult to recover, resulting in waste and environmental pollution. At the same time, it requires long-term shutdowns, resulting in low production efficiency. Summary of the invention

[0005] The invention provides a thin-wall deep barrel forming die with local protrusions, which solves the problems of uneven use of lubricating oil and poor cleaning effect of oil stains in the related art.

[0006] The technical solution of the present invention is as follows: To achieve the above object, the present invention provides the following technical solution: a thin-walled deep barrel forming die with local protrusions, comprising a die body, a cleaning assembly and a measuring assembly, the die body comprising an upper die set and a lower die set, the lower die set comprising a lower die plate, the top of the lower die plate is fixedly connected to a lower die mounting block, the top of the lower die mounting block is fixedly connected to a lower die positioning block, and the top of the lower die positioning block is fixedly connected to a gasket; The lower die assembly further comprises two symmetrically arranged lower die connection blocks, one side of each of the two lower die connection blocks is fixedly connected with a lower die, the inner diameters of the two lower dies are the same as the outer diameter of the gasket ring, and a groove is provided inside each of the two lower dies, and the groove is used to extrude a local protrusion; The upper mold assembly includes an upper mold connecting block, the bottom of the upper mold connecting block is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to a fixing plate, the bottom of the fixing plate is fixedly connected to a pull rod, an inner core is movably sleeved on the outer circumference of the pull rod, an upper mold pad is fixedly sleeved on the outer circumference of the connecting rod, the top of the upper mold pad is fixedly connected to an upper mold mounting block, and the bottom of the upper mold pad is fixedly connected to an upper mold; The cleaning assembly comprises a rotating seat, a rotating motor is installed inside the rotating seat, an output end of the rotating motor is fixedly connected to a coaxially arranged rotating shaft through a coupling, a rotating block is fixedly sleeved on the outer circumference of the rotating shaft, a support rod is fixedly connected to the top of the rotating block, a cleaning head is fixedly connected to the side of the support rod away from the rotating block, and an upper mold cleaning block and a lower mold cleaning block are slidably connected inside the cleaning head respectively; The measuring component includes a current generator arranged inside the upper mold, a current receiver arranged inside the lower mold, and a current display arranged on one side of the lower mold, and the current receiver and the current display are electrically connected.

[0007] Preferably, a limiting groove is provided inside the inner core, and a limiting block is fixedly sleeved on the outer circumferential surface of the pull rod, and the limiting block is slidably connected to the inside of the limiting groove. The limiting groove is provided inside the inner core, so that the blank can be extruded and positioned first when the inner core first contacts the blank, thereby improving the forming accuracy and increasing the versatility of the mold, so that inner cores of different sizes can be easily replaced to meet production requirements of different thicknesses.

[0008] Preferably, a heating device is installed inside the two lower mold connecting blocks, and a plurality of heat-conducting wires evenly distributed in a rectangular array are arranged inside the lower mold, and the heat-conducting wires are in contact with the output end of the heating device. The arrangement of multiple heat-conducting wires can preheat the two lower molds before forming, thereby avoiding thermal stress caused by sudden temperature changes during the forming process. Such thermal stress may cause deformation or cracking of the mold, thereby affecting the quality of the product and the life of the mold.

[0009] Preferably, an electric push rod is installed inside the connecting rod, and a coating rod is fixedly connected to the output end of the electric push rod. A coating head is provided at the bottom of the coating rod. The coating head is a 360° coating head, which can evenly apply the lubricating oil to the outer surface of the entire lower mold, thereby ensuring uniform coating, reducing manual workload, and improving overall operating efficiency.

[0010] Preferably, the cleaning head has two symmetrically arranged sliding grooves, the first rack and the second rack are slidably connected to the inside of the two sliding grooves respectively, the bottom of the first rack is fixedly connected to the top of the lower mold cleaning block, and the top of the second rack is fixedly connected to the bottom of the upper mold cleaning block; A linkage motor is installed inside the cleaning head, and the output end of the linkage motor is fixedly connected to a coaxially arranged linkage shaft through a coupling, and a linkage gear is fixedly sleeved on the outer circumferential surface of the linkage shaft, and the linkage gear is respectively meshed and connected with the first rack and the second rack, and the first rack and the second rack are set. When it is necessary to clean the mold surface, the linkage motor can be directly started to drive the first rack and the second rack to move at the same time, so that the stains generated on the surfaces of the lower mold and the upper mold can be cleaned at the same time, thereby improving the cleaning efficiency. In addition, when cleaning is not needed, the cleaning head can be moved elsewhere by starting the rotating seat, and several groups of mold bodies can be arranged circumferentially according to the rotating seat. One cleaning head can correspond to the cleaning operations of multiple molds, greatly improving the production efficiency.

[0011] Preferably, the inner diameter of the upper mold cleaning block is larger than the outer diameter of the inner core, and the outer diameter of the lower mold cleaning block is smaller than the inner diameter of the lower mold. The upper mold cleaning block and the lower mold cleaning block are both provided with mounting grooves, and a plurality of symmetrically arranged cleaning nozzles are installed inside the mounting grooves. The cleaning nozzles use dry ice particle tail spray materials for cleaning. Dry ice cleaning will not cause any damage to the surface of the cleaned object. At the same time, a circle of cleaning nozzles can ensure that the surface of the entire upper and lower molds is fully cleaned.

[0012] Preferably, a blank is placed on the top of the gasket, and the blank is a hollow cylinder. The use of a cylindrical hollow blank can reduce the amount of material used without affecting the quality of the molded product, making the entire molding process more efficient, such as reducing heating time, reducing energy consumption, shortening the production cycle, and improving efficiency.

[0013] The working principle and beneficial effects of the present invention are: 1. In the present invention, the blank and the lower mold are preheated by a heating device, thereby avoiding thermal stress caused by sudden temperature change during the forming process, improving the quality of the product and the life of the mold, and at the same time slowing down the cooling speed of the blank after being placed in the mold, ensuring that the blank maintains stable performance during the forming process; 2. In the present invention, by using the current generator in combination with the insulating lubricating oil and detecting the current with the current display, the problem of uneven coating of the lubricating oil can be discovered in time, thereby ensuring the stability of the forming process and the reliability of the product quality; 3. In the present invention, the cleaning nozzle and linkage mechanism in the cleaning device utilize the physical impact of solid carbon dioxide to remove dirt on the mold surface, thereby reducing damage to the mold and cleaning excess lubricating oil, thereby improving production efficiency and mold cleanliness; 4. In the present invention, the coating device is provided to achieve uniform spraying of lubricating oil on the inner surface of the lower mold, thereby ensuring the lubrication effect of the mold during the forming process. At the same time, the coating range is expanded to the entire surface of the lower mold by moving the upper mold downward, thereby improving the utilization rate of the lubricating oil and the coating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is an overall side sectional view of the present invention; Figure 3 is a side sectional view of the lower mold of the present invention; Figure 4 A side sectional view of the upper mold of the present invention; Figure 5 It is a schematic diagram of the structure of the cleaning component of the present invention; Figure 6 It is a schematic diagram of the internal structure of the cleaning component of the present invention.

[0016] In the figure: 1. mold body; 101. lower mold plate; 102. lower mold mounting block; 103. lower mold positioning block; 104. gasket; 105. lower mold connecting block; 106. lower mold; 107. blank; 108. upper mold connecting block; 109. upper mold mounting block; 110. upper mold pad; 111. connecting rod; 112. upper mold; 113. fixing plate; 114. pull rod; 115. inner core; 116. electric push rod ; 117, coating rod; 118, coating head; 2, cleaning assembly; 201, rotating seat; 202, rotating block; 203, support rod; 204, cleaning head; 205, upper mold cleaning block; 206, lower mold cleaning block; 207, first rack; 208, second rack; 209, linkage gear; 210, linkage motor; 211, cleaning nozzle; 3, measuring assembly; 31, current generator; 32, current display. DETAILED DESCRIPTION

[0017] The following will be combined with 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.

[0018] like Figure 1 to Figure 6 As shown, this embodiment provides a thin-walled deep barrel forming die with local protrusions, including a die body 1, a cleaning component 2 and a measuring component 3. The die body 1 includes an upper die set and a lower die set. The lower die set includes a lower die plate 101. The top of the lower die plate 101 is fixedly connected to a lower die mounting block 102. The top of the lower die mounting block 102 is fixedly connected to a lower die positioning block 103. The top of the lower die positioning block 103 is fixedly connected to a gasket ring 104. The lower die set also includes two symmetrically arranged lower die connection blocks 105, one side of each of the two lower die connection blocks 105 is fixedly connected with a lower die 106, the inner diameter of each of the two lower die 106 is the same as the outer diameter of the gasket 104, and each of the two lower die 106 is provided with a groove, which is used to squeeze the local protrusion; The upper die assembly includes an upper die connection block 108, a connection rod 111 is fixedly connected to the bottom of the upper die connection block 108, a fixing plate 113 is fixedly connected to the bottom of the connection rod 111, a pull rod 114 is fixedly connected to the bottom of the fixing plate 113, an inner core 115 is movably sleeved on the outer circumference of the pull rod 114, an upper die pad 110 is fixedly sleeved on the outer circumference of the connection rod 111, an upper die mounting block 109 is fixedly connected to the top of the upper die pad 110, and an upper die 112 is fixedly connected to the bottom of the upper die pad 110; The cleaning assembly 2 includes a rotating seat 201, a rotating motor is installed inside the rotating seat 201, the output end of the rotating motor is fixedly connected to a coaxially arranged rotating shaft through a coupling, a rotating block 202 is fixedly sleeved on the outer circumference of the rotating shaft, a support rod 203 is fixedly connected to the top of the rotating block 202, a cleaning head 204 is fixedly connected to the side of the support rod 203 away from the rotating block 202, and an upper mold cleaning block 205 and a lower mold cleaning block 206 are slidably connected inside the cleaning head 204; The measuring assembly 3 includes a current generator 31 disposed inside the upper mold assembly, a current receiver disposed inside the lower mold 106 , and a current display 32 disposed on one side of the lower mold 106 . The current receiver and the current display 32 are electrically connected.

[0019] like Figure 1 to Figure 6 As shown, a limiting groove is provided inside the inner core 115, and a limiting block is fixedly sleeved on the outer circumferential surface of the pull rod 114. The limiting block is slidably connected inside the limiting groove. The limiting groove is provided inside the inner core 115, so that the blank 107 can be extruded and positioned first when the inner core 115 first contacts the blank 107, thereby improving the forming accuracy and increasing the versatility of the mold, so that the inner cores 115 of different sizes can be easily replaced to meet the production requirements of different thicknesses.

[0020] like Figure 1 to Figure 6 As shown, a heating device is installed inside the two lower mold connecting blocks 105, and a plurality of heat-conducting wires evenly distributed in a rectangular array are arranged inside the lower mold 106. The heat-conducting wires are in contact with the output ends of the heating device. The arrangement of a plurality of heat-conducting wires can preheat the two lower molds 106 before forming, so as to avoid thermal stress caused by sudden temperature change during the forming process. Such thermal stress may cause deformation or cracking of the mold, thereby affecting the quality of the product and the life of the mold.

[0021] like Figure 1 to Figure 6 As shown, an electric push rod 116 is installed inside the connecting rod 111, and a coating rod 117 is fixedly connected to the output end of the electric push rod 116. A coating head 118 is provided at the bottom of the coating rod 117. The coating head 118 is a 360° spray head, which can evenly apply lubricating oil to the outer surface of the entire lower mold 106, thereby reducing manual workload on the basis of ensuring uniform coating and improving overall operating efficiency.

[0022] like Figure 1 to Figure 6 As shown, the cleaning head 204 has two symmetrically arranged sliding grooves, the first rack 207 and the second rack 208 are slidably connected inside the two sliding grooves, the bottom of the first rack 207 is fixedly connected to the top of the lower mold cleaning block 206, and the top of the second rack 208 is fixedly connected to the bottom of the upper mold cleaning block 205; A linkage motor 210 is installed inside the cleaning head 204, and the output end of the linkage motor 210 is fixedly connected to a coaxial linkage shaft through a coupling. A linkage gear 209 is fixedly sleeved on the outer circumference of the linkage shaft, and the linkage gear 209 is respectively meshed and connected with the first rack 207 and the second rack 208. The first rack 207 and the second rack 208 are set. When it is necessary to clean the mold surface, the linkage motor 210 can be directly started to drive the first rack 207 and the second rack 208 to move at the same time, so that the stains generated on the surface of the lower mold 106 and the upper mold 112 can be cleaned at the same time, thereby improving the cleaning efficiency. In addition, when cleaning is not needed, the cleaning head 204 can be moved to another place by starting the rotating seat 201, and several groups of mold bodies 1 can be arranged circumferentially according to the rotating seat 201. One cleaning head 204 can correspond to the cleaning operations of multiple molds, greatly improving the production efficiency.

[0023] like Figure 1 to Figure 6 As shown, the inner diameter of the upper mold cleaning block 205 is larger than the outer diameter of the inner core 115, and the outer diameter of the lower mold cleaning block 206 is smaller than the inner diameter of the lower mold 106. The upper mold cleaning block 205 and the lower mold cleaning block 206 are both provided with mounting grooves, and a plurality of symmetrically arranged cleaning nozzles 211 are installed inside the mounting grooves. The cleaning nozzles 211 use dry ice particle tail spray materials for cleaning. Dry ice cleaning will not cause any damage to the surface of the cleaned object. At the same time, a circle of cleaning nozzles 211 can ensure that the surface of the entire upper and lower molds 106 is fully cleaned.

[0024] like Figure 1 to Figure 6 As shown, a blank 107 is placed on the top of the gasket 104. The blank 107 is a hollow cylinder. The use of the cylindrical hollow blank 107 can reduce the amount of material used without affecting the quality of the molded product, making the entire molding process more efficient, such as reducing heating time, reducing energy consumption, shortening the production cycle, and increasing efficiency.

[0025] In this embodiment, when the device is used to form a thin-walled deep cylinder, the two lower molds are first installed on the two hydraulic cylinders through the lower mold connecting block 105, so that the molds can be opened and closed by the cylinders, and then the upper mold is installed on the hydraulic press through the upper mold connecting block 108, so that the molds can be closed and forged by starting and stopping the hydraulic press; Then, according to the size of the product, a suitable blank 107 is selected, and the blank 107 is preheated and pretreated. At the same time, two heating devices are started, and the heating devices are started to generate heat, and the heat is transferred to the lower mold 106 through the heat conducting wire, and the surface of the lower mold 106 is preheated to gradually increase the mold temperature to the working temperature, so as to avoid thermal stress caused by sudden temperature change during the forming process, thereby affecting the quality of the product and the life of the mold. It can also slow down the cooling speed of the blank after being placed in the mold, and prevent the blank from having problems such as reduced plasticity and increased deformation resistance due to sudden temperature drop. This helps to ensure that the blank maintains stable performance during the forming process and improves the forming quality of the product; After the pretreatment of the blank 107 and the lower mold 106 is completed, the blank 107 is first placed on the top of the gasket 104, and the hydraulic press can be started to drive the top upper mold connecting block 108 and the upper mold to move downward. At this time, the inner core 115 will first contact the blank 107 to position the blank 107. At this time, because there is a gap between the inner core 115 and the tie rod 114, the pressure applied by the inner core 115 will not be too large. After completing the pre-positioning, the two lower molds 106 are merged by moving the two lower mold connecting blocks 105 (here A hydraulic cylinder or other structure can be used to close the two lower die connection blocks 105. After the closing of the die, the upper die 112 can continue to move downward. During this process, the internal blank 107 will be squeezed and thinned due to the shapes of the lower die 106 and the upper die 112, and the excess blank 107 will enter the groove opened inside the lower die 106 under the action of pressure to form a local protrusion, so that the deep cylinder and the protrusion are formed in one piece, with fewer processes, reducing the cost required for production, improving production efficiency and ensuring the overall comprehensive performance of the forging; When the upper mold and the lower mold are closed, the current generator 31 arranged inside the connecting rod 111 will generate current. Because the lubricant selected in this forming process is made of insulating material (it should be noted that the insulating lubricant here can be perfluoropolyether lubricant. This lubricant can maintain good insulation at a certain temperature and pressure to meet the subsequent detection. It can also be replaced with other types of lubricants that meet the above characteristics), so when the lubricant is evenly coated on the lower mold 106, the current cannot or only a small amount of current passes through the lubricant layer. The current is detected by the current display 32. If the current value deviates greatly from the initial value, it can be judged that the lubricant is unevenly coated. After completing this forming operation, first start the rotating seat 201 and rotate the cleaning head 204 between the upper mold 112 and the lower mold 106, so that the upper mold cleaning block 205 and the lower mold cleaning block 206 are respectively arranged with the upper mold 112 and the lower mold 106 for centering. After alignment, the cleaning nozzle 211 is started first. Solid carbon dioxide will be sprayed out from the inside of the cleaning nozzle 211. Under the premise of removing dirt by physical impact, the damage to the mold is reduced. The oil on the surface will first be quickly frozen and brittle. The viscosity of the frozen lubricating oil is reduced and it is easier to be peeled off. After being peeled off, it will be blown away from the mold surface by the sprayed dry ice. It should be noted that the way in which dry ice is loaded and the way in which the cleaning nozzle 211 is sprayed are mature technologies in the prior art, and will not be described in detail here. When the cleaning nozzle 211 sprays dry ice, the linkage motor 210 will be started at the same time to drive the linkage gear 209 to rotate. The linkage gear 209 drives the first rack 207 and the second rack 208 to move synchronously in opposite directions, that is, the first rack 207 drives the lower mold cleaning block 206 to move downward and enter the interior of the two lower molds 106. The cleaning nozzle on the outer peripheral surface of the lower mold cleaning block 206 cleans the inner surface of the lower mold 106. The second rack 208 drives the upper mold cleaning block 205 to move upward, so that the inner core 115 passes through the interior of the upper mold cleaning block 205, and the cleaning nozzle on the inner diameter of the upper mold cleaning block 205 cleans the outer surface of the inner core 115. At this time, the excess lubricating oil on the mold surface is recovered. After the cleaning is completed, the linkage motor 210 is reversely started to drive the first rack 207 and the second rack 208 to reset in the opposite direction. After the reset is completed, the rotating block 202 rotates again to reset; After the cleaning is completed, the electric push rod 116 is first started to drive the coating rod 117 and the coating head 118 to move downward and extend out of the inner core 115. At this time, the coating head 118 is started, and the coating head 118 will spray the lubricating oil on the inner surface of the lower mold 106. It should be noted that the coating head 118 here can use a spray head with model CY34-TNQ-A2-H. The lubricating oil is transported from the storage tank to the inside of the spray head through an external liquid delivery pump, and then the internal lubricating oil is sprayed 360° to the surface of the lower mold 106 through gas pressurization, and as the upper mold 112 moves downward, the coating range is expanded to the entire surface of the lower mold 106. After the spraying is completed, the electric push rod 116 will move upward to reset the coating head 118, and the spraying of the lubricating oil is completed at this time; After the coating is completed, the upper mold 112 will continue to move downward, thereby closing the upper mold 112 and the lower mold 106, and transferring the lubricating oil on the surface of the lower mold 106 to the inner core 115 of the upper mold 112. After the coating of the upper mold 112 is completed, the next forming operation can be started.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thin-walled deep barrel forming die with local protrusions, characterized in that: The invention comprises a mould body (1), a cleaning component (2) and a measuring component (3), wherein the mould body (1) comprises an upper mould group and a lower mould group, wherein the lower mould group comprises a lower mould plate (101), wherein the top of the lower mould plate (101) is fixedly connected to a lower mould mounting block (102), wherein the top of the lower mould mounting block (102) is fixedly connected to a lower mould positioning block (103), and the top of the lower mould positioning block (103) is fixedly connected to a gasket ring (104); The lower die assembly further comprises two symmetrically arranged lower die connection blocks (105), one side of each of the two lower die connection blocks (105) being fixedly connected to a lower die (106), the inner diameters of the two lower die (106) being the same as the outer diameter of the gasket (104), and the interiors of the two lower die (106) being provided with a groove, the groove being used for extruding a local protrusion; The upper die assembly comprises an upper die connection block (108), the bottom of the upper die connection block (108) is fixedly connected to a connection rod (111), the bottom of the connection rod (111) is fixedly connected to a fixing plate (113), the bottom of the fixing plate (113) is fixedly connected to a pull rod (114), an inner core (115) is movably sleeved on the outer circumference of the pull rod (114), an upper die pad (110) is fixedly sleeved on the outer circumference of the connection rod (111), the top of the upper die pad (110) is fixedly connected to an upper die mounting block (109), and the bottom of the upper die pad (110) is fixedly connected to an upper die (112); The cleaning assembly (2) comprises a rotating seat (201), a rotating motor is installed inside the rotating seat (201), an output end of the rotating motor is fixedly connected to a coaxially arranged rotating shaft via a coupling, a rotating block (202) is fixedly sleeved on the outer peripheral surface of the rotating shaft, a support rod (203) is fixedly connected to the top of the rotating block (202), a cleaning head (204) is fixedly connected to the side of the support rod (203) away from the rotating block (202), and an upper mold cleaning block (205) and a lower mold cleaning block (206) are respectively slidably connected inside the cleaning head (204); The measuring component (3) comprises a current generator (31) arranged inside the upper mold assembly, a current receiver arranged inside the lower mold (106), and a current display (32) arranged on one side of the lower mold (106); the current receiver and the current display (32) are electrically connected.

2. A thin-walled deep barrel forming die with local protrusions according to claim 1, characterized in that: A limiting groove is provided inside the inner core (115), and a limiting block is fixedly sleeved on the outer circumference of the pull rod (114), and the limiting block is slidably connected to the inside of the limiting groove.

3. A thin-walled deep barrel forming die with local protrusions according to claim 2, characterized in that: A heating device is installed inside the two lower mold connecting blocks (105), and a plurality of heat-conducting wires evenly distributed in a rectangular array are arranged inside the lower mold (106), and the heat-conducting wires are in contact with the output ends of the heating devices.

4. A thin-walled deep barrel forming die with local protrusions according to claim 3, characterized in that: An electric push rod (116) is installed inside the connecting rod (111), a coating rod (117) is fixedly connected to the output end of the electric push rod (116), and a coating head (118) is provided at the bottom of the coating rod (117).

5. A thin-walled deep barrel forming die with local protrusions according to claim 4, characterized in that: The cleaning head (204) has two symmetrically arranged sliding grooves formed inside, and a first rack (207) and a second rack (208) are slidably connected inside the two sliding grooves, respectively, the bottom of the first rack (207) is fixedly connected to the top of the lower mold cleaning block (206), and the top of the second rack (208) is fixedly connected to the bottom of the upper mold cleaning block (205); A linkage motor (210) is installed inside the cleaning head (204); the output end of the linkage motor (210) is fixedly connected to a coaxially arranged linkage shaft via a coupling; a linkage gear (209) is fixedly sleeved on the outer circumference of the linkage shaft; the linkage gear (209) is meshedly connected to the first rack (207) and the second rack (208), respectively.

6. A thin-walled deep barrel forming die with local protrusions according to claim 5, characterized in that: The inner diameter of the upper mold cleaning block (205) is larger than the outer diameter of the inner core (115), and the outer diameter of the lower mold cleaning block (206) is smaller than the inner diameter of the lower mold (106). The upper mold cleaning block (205) and the lower mold cleaning block (206) are both provided with mounting grooves inside, and a plurality of symmetrically arranged cleaning nozzles (211) are installed inside the mounting grooves.

7. A thin-walled deep barrel forming die with local protrusions according to claim 6, characterized in that: A blank (107) is placed on the top of the gasket (104), and the blank (107) is in a hollow cylindrical shape.

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