A liquid-filled deep-drawing device for explosion-proof shielding tube

Abstract

The present invention discloses a liquid filling deep drawing forming device for an explosion-proof shielding tube, and the present invention relates to the technical field of shielding tube production, comprising a base, the top of the base is fixedly connected to a slide bar, the top of the slide bar is fixedly connected to a top plate, the top of the top plate is fixedly connected to a first hydraulic cylinder, the output end of the first hydraulic cylinder is fixedly connected to a punch die, and also comprises a hydraulic support mechanism, the inner side surface of the hydraulic support mechanism is fixedly installed at a position below the surface of the slide bar. The liquid filling deep drawing forming device for the explosion-proof shielding tube achieves a high-viscosity liquid with a large tension. Compared with a low-viscosity liquid, a high-viscosity liquid has a greater supporting force on a sheet material without causing a non-continuous contact surface of the sheet material. The punch die impacts downward, and the support of the high-viscosity liquid prevents the sheet material from wrinkling. The liquid guide component stores the squeezed high-viscosity liquid, and solves the problem that the squeezing of particles will make the surface of the shielding tube uneven.

Description

Technical Field

[0001] The invention relates to the technical field of shielding tube production, in particular to a liquid filling deep drawing forming device for an explosion-proof shielding tube. Background Art

[0002] The shielding tube is an insulation protection device mainly used in the connection between the two sections of the composite shielded insulated copper tube busbar. Its external insulation protection plays a vital role in the safe and reliable operation of the power transmission and distribution system and power equipment. It is an indispensable component for the normal operation of the product, avoiding phase-to-phase short circuit and insulation protection. The shielding tube is manufactured by deep drawing process. The friction between the mold and the metal sheet, especially the blanking ring applies the blanking force to the sheet. If the pressure applied by the blanking ring is too small, the flange area is prone to instability and wrinkling. If the blanking force is too large, the friction between the mold and the sheet is too large, which restricts the material from flowing from the flange area to the die, resulting in the cylinder being prone to rupture and uneven wall thickness during the deep drawing process. The Chinese patent number is: CN112170608B discloses "A part drawing forming method and forming die". In this patent, the cavity surrounded by the back pressure punch, the upper edge pressure tube and the plate is filled with granular medium, and the lower punch and the back pressure punch move up and down together in the form of speed difference, so as to ensure that the granular medium is always under pressure, so as to force the plate to deform, so that when the back pressure punch and the lower punch move upward, the plate is forced to deform and wrap around the lower punch to form a forward drawing section, and when the back pressure punch and the lower punch move downward, the plate is forced to deform and fit closely to the groove wall of the reverse drawing groove to form an outward turning edge of the reverse drawing.

[0003] The existing explosion-proof shielding tube liquid filling deep drawing forming equipment has structural design defects, such as the extrusion of particles will make the shielding tube surface uneven, and the pressure applied by the clamping ring is too small, causing the sheet to wrinkle. If the clamping force is too large, the sheet will be torn. Summary of the invention

[0004] The present invention provides a liquid filling deep drawing forming device for an explosion-proof shielding tube, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A liquid filling deep drawing forming device for an explosion-proof shielding cylinder, comprising a base, a slide rod is fixedly connected to the top of the base, a top plate is fixedly connected to the top of the slide rod, a first hydraulic cylinder is fixedly connected to the top of the top plate, and a punch is fixedly connected to the output end of the first hydraulic cylinder, and further comprising:

[0006] A hydraulic support mechanism, the inner side of which is fixedly mounted below the surface of the slide bar, and the hydraulic support mechanism is used for deep drawing of sheet metal into a shielding cylinder and for supporting the sheet metal forming surface with a high-viscosity liquid;

[0007] A edge clamping mechanism, which is fixedly mounted on the top of the top plate, and the lower part of the edge clamping mechanism surface is slidably connected to the surface of the slide bar, and is used for directional clamping of the sheet material and for clamping the sheet material near the edge during the drawing process;

[0008] The hydraulic support mechanism includes a die, the inner side surface of the die is fixedly installed below the surface of the sliding rod, a liquid storage cavity is provided near the middle of the inner side surface of the die, a lifting component is slidably connected to the inner side surface of the die near the liquid storage cavity, an anti-sticking component is fixedly connected above the inner side surface of the die, a liquid guide component is fixedly connected below the die surface, and a second molding cavity is provided above the inner side surface of the die.

[0009] Preferably, the hydraulic support mechanism also includes a second hydraulic cylinder, the bottom of which is fixedly installed in the middle position of the top of the base, and the output end of the second hydraulic cylinder is fixedly connected to the bottom of the lifting assembly, and the bottom of the sheet is supported by the extrusion of particles. The surface of the particles is not in continuous contact with the surface of the sheet, and the edge pressing mechanism presses the sheet in the middle position of the top of the hydraulic support mechanism. The first hydraulic cylinder drives the die to move downward, and the die extrude the sheet. The second forming cavity and the lifting assembly perform deep drawing on the deep cylindrical shielding cylinder. The liquid storage cavity stores high-viscosity liquid, and the high-viscosity liquid contacts the bottom of the sheet through the anti-sticking assembly, thereby preventing the liquid from adhering to the surface of the sheet and causing demolding and cleaning difficulties.

[0010] Preferably, the lifting assembly comprises a lifting block, the middle position of the bottom of the lifting block is fixedly mounted on the output end of the second hydraulic cylinder, and the inner side surface of the lifting block is provided with a first molding cavity.

[0011] Preferably, the lifting assembly further comprises a guide slide, the top of which is fixedly mounted at a position close to an edge of the bottom of the lifting block, and an opening is provided at the bottom of the lifting block.

[0012] Preferably, the anti-sticking component includes a blocking body, which is fixedly mounted on the side of the die, the inner side surface of the blocking body is slidably connected to an elastic rope, one end of the elastic rope is fixedly connected to a plug, a groove is opened at the upper position of the inner side surface of the die, and an elastic membrane is arranged inside the groove. When the sheet is not drawn, the pulling of the elastic rope causes the elastic membrane to expand and open downward, and the blocking body blocks the movement of the elastic rope, so that high-viscosity liquid will not be lost or clog the pipeline during transportation. The die impacts downward, and after the bottom of the die contacts the middle position of the top of the sheet, the elastic membrane is squeezed downward and embedded into the first molding cavity along with the sheet.

[0013] Preferably, the anti-sticking component further comprises an elastic film, the surface of the elastic film close to the edge is fixedly mounted on the end of the elastic rope away from the plug, and the upper position of the inner side surface of the concave mold is fixedly connected with a rubber tube.

[0014] Preferably, the liquid guiding assembly comprises an internal threaded barrel, the surface of the internal threaded barrel is fixedly mounted on the inner side surface of the die, and the side of the internal threaded barrel surface away from the die is fixedly connected to a gate opening and closing machine.

[0015] Preferably, the liquid guiding component also includes a threaded rod, one end of the threaded rod extends to the inner side of the internal threaded barrel, and the end of the threaded rod close to the internal threaded barrel is fixedly connected to a threaded block, and the rubber tube is arranged above the surface of the elastic membrane. When the die impacts the sheet material and the sheet material squeezes the elastic membrane to the inner side of the lifting block, hydraulic pressure is passed into the inside of the rubber tube, and the rubber tube expands to squeeze the elastic membrane, so that the liquid at the bottom of the elastic membrane is less likely to overflow upward, and the first molding cavity performs a deep drawing molding on the sheet material, and the liquid inside the lifting block enters the liquid containing cavity along the opening, and the opening and closing machine drives the threaded rod to rotate outward, and the threaded rod drives the threaded block to rotate and move outward, thereby adapting to the increase of liquid inside the liquid containing cavity.

[0016] Preferably, the edge pressing mechanism includes a lifting assembly, the bottom of which is fixedly installed on the top of the top plate, the bottom of which is fixedly connected to a fixing frame, the bottom of which is fixedly connected to an inner hollow ring, and the surface of the fixing frame near the sliding rod is fixedly connected to a clamping assembly.

[0017] Preferably, the lifting assembly includes a cylinder, the bottom of which is fixedly mounted on the top of the base, the inner side surface of the cylinder is provided with an inner tooth surface, the top of the cylinder is fixedly connected to an electromagnet, the sheet is placed on the top of the die, at this time the axis of the sheet is not colinear with the axis of the second molding cavity, the lifting assembly releases the fixed frame, the inner hollow ring descends and contacts the top of the sheet, at this time the interior of the inner hollow ring is not filled with liquid, the four clamping assemblies move close to the inner hollow ring, the disc-structured sheet is clamped and centered by the clamping assemblies, and the axis of the sheet is colinear with the axis of the second molding cavity.

[0018] Preferably, the lifting assembly also includes a gear, the surface of the gear is slidably connected to the inner side surface of the cylinder, the gear is magnetic, and an extension rod is fixedly connected to the position between the bottom of the gear and the top of the fixed frame. When the sheet is placed above the die, the electromagnet is energized, and the electromagnet is energized to attract the magnetic gear. The gear is attracted and slides upward along the inner tooth surface to be in close contact with the electromagnet. The extension rod drives the fixed frame to move upward, the inner hollow ring is lifted upward, and the sheet is placed on the top of the die. Subsequently, the electromagnet is de-energized, the gear slides downward, and the bottom of the inner hollow ring is in direct contact with the top of the sheet.

[0019] Preferably, the clamping assembly comprises a frame, the bottom of the frame is fixedly mounted on the top of the fixed frame, the inner side of the frame is fixedly connected to an electric cylinder, and the output end of the electric cylinder is fixedly connected to the clamping body.

[0020] The present invention provides a liquid filling deep drawing forming device for an explosion-proof shielding tube. It has the following beneficial effects:

[0021] 1. The liquid filling deep drawing forming equipment of the explosion-proof shielding tube has a high viscosity liquid with a large tension. Compared with the low viscosity liquid, the high viscosity liquid has a greater supporting force on the sheet material without causing the problem of discontinuity of the sheet material contact surface. The punch impacts downward, and the support of the high viscosity liquid prevents the sheet material from wrinkling. The liquid guide component stores the squeezed high viscosity liquid, which solves the problem that the squeezing of particles will make the surface of the shielding tube uneven.

[0022] 2. The liquid filling deep drawing forming equipment of the explosion-proof shielding tube, the support of the second hydraulic cylinder makes the lifting block unable to move downward, and the high viscosity liquid in the first forming cavity is squeezed into the liquid containing cavity, so that the sheet material is deeply drawn in one time, and the elastic membrane is embedded downward into the lifting block, while the bottom of the elastic membrane is squeezed downward by the elastic rope. The plug limits one end of the elastic rope, and the high viscosity liquid cannot overflow through the gap between the elastic membrane and the die, thus avoiding the problem of viscosity liquid adhering to the surface of the sheet material and making it difficult to demold.

[0023] 3. In the liquid-filled deep drawing forming equipment of the explosion-proof shielding cylinder, the hydraulic pressure of the second hydraulic cylinder is removed, the lifting block moves downward, the high-viscosity liquid supports the downward movement of the lifting block, the sheet material continues to be drawn downward, and the second molding cavity performs secondary molding on the sheet material to achieve deep cylinder drawing. The guide slide slides downward on the inner side surface of the die to avoid skewing and shaking of the guide slide when it moves downward. The high-viscosity liquid is temporarily stored inside the internal threaded cylinder, which can effectively avoid the loss of liquid during the transportation process.

[0024] 4. In the liquid-filled deep drawing equipment of the explosion-proof shielding tube, the sheet material is located directly above the lifting component, and then liquid is injected into the inner hollow ring to increase the weight of the inner hollow ring. Liquid of a certain weight can be added as needed to ensure that the pressure on the sheet material is neither too large nor too small. The die moves downward, and the sheet material passes through the lifting component and the second forming cavity in turn for deep cylinder drawing, thereby performing a deep drawing forming on the shielding tube. The lifting component does not exert a downward thrust on the inner hollow ring, and the sheet material is only pressed by the gravity of the inner hollow ring and the internal liquid, which solves the problem that the pressure exerted by the pressure ring is too small, causing the sheet material to wrinkle, and if the pressure is too large, the sheet material will be torn.

[0025] 5. The liquid-filled deep drawing forming equipment of the explosion-proof shielding tube has a frame that supports and limits the electric cylinder. The electric cylinder drives the clamping body to move toward the inner hollow ring. The edge of the sheet is clamped by the four clamping bodies. Then, liquid is introduced into the inner hollow ring to increase the weight of the inner hollow ring, thereby increasing the pressing force of the inner hollow ring on the sheet. During the pressing process of the inner hollow ring on the sheet, the extension rod does not apply additional pressure to the inner hollow ring, thereby making the pressing force of the sheet during deep drawing more controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A three-dimensional diagram of the overall top of the liquid-filled deep drawing forming equipment of the explosion-proof shielding tube of the present invention;

[0027] Figure 2 A three-dimensional diagram of the overall bottom of the liquid-filled deep drawing forming equipment of the explosion-proof shielding tube of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the support mechanism of the present invention;

[0029] Figure 4 It is a structural schematic diagram of the lifting assembly of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the anti-sticking component of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the liquid guiding component of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the edge pressing mechanism of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the lifting assembly of the present invention;

[0034] Fig. 9 It is a schematic structural diagram of the clamping assembly of the present invention.

[0035] In the figure: 1, base; 2, slide bar; 3, top plate; 4, first hydraulic cylinder; 5, punch; 6, hydraulic support mechanism; 61, die; 62, liquid chamber; 63, second hydraulic cylinder; 64, lifting assembly; 641, lifting block; 642, first molding chamber; 643, opening; 644, guide slide; 65, anti-sticking assembly; 651, blocking body; 652, elastic rope; 653, plug; 654, elastic membrane; 655, rubber tube ; 66. Liquid guiding assembly; 661. Internally threaded cylinder; 662. Gate opening and closing machine; 663. Threaded rod; 664. Threaded block; 67. Second molding cavity; 7. Edge pressing mechanism; 71. Lifting assembly; 711. Cylinder body; 712. Internal tooth surface; 713. Electromagnet; 714. Gear; 715. Extension rod; 72. Fixed frame; 73. Inner hollow ring; 74. Clamping assembly; 741. Frame body; 742. Electric cylinder; 743. Clamping body. DETAILED DESCRIPTION

[0036] 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.

[0037] First embodiment: Figure 1-Figure 3 As shown, the present invention provides a technical solution: a liquid filling deep drawing forming device for an explosion-proof shielding tube, a liquid filling deep drawing forming device for an explosion-proof shielding tube, comprising a base 1, a slide bar 2 is fixedly connected to the top of the base 1, a top plate 3 is fixedly connected to the top of the slide bar 2, a first hydraulic cylinder 4 is fixedly connected to the top of the top plate 3, and a punch 5 is fixedly connected to the output end of the first hydraulic cylinder 4, and further comprising:

[0038] A hydraulic support mechanism 6, the inner side of which is fixedly mounted below the surface of the slide bar 2, and the hydraulic support mechanism 6 is used for deep drawing of the sheet metal into a shielding cylinder and for supporting the sheet metal forming surface with a high viscosity liquid;

[0039] The edge clamping mechanism 7 is fixedly mounted on the top of the top plate 3. The lower part of the edge clamping mechanism 7 is slidably connected to the surface of the slide bar 2. The edge clamping mechanism 7 is used for directional clamping of the sheet material and for clamping the sheet material near the edge during the drawing process.

[0040] The hydraulic support mechanism 6 includes a die 61, the inner side of the die 61 is fixedly installed at a position below the surface of the slide bar 2, a liquid containing cavity 62 is provided near the middle of the inner side of the die 61, a lifting assembly 64 is slidably connected to the inner side of the die 61 near the liquid containing cavity 62, an anti-sticking assembly 65 is fixedly connected to the upper position of the inner side of the die 61, a liquid guiding assembly 66 is fixedly connected to the lower position of the surface of the die 61, and a second molding cavity 67 is provided at the upper position of the inner side of the die 61;

[0041] The hydraulic support mechanism 6 also includes a second hydraulic cylinder 63 , the bottom of which is fixedly mounted at the middle position of the top of the base 1 , and the output end of the second hydraulic cylinder 63 is fixedly connected to the bottom of the lifting assembly 64 .

[0042] When in use, the bottom of the sheet is supported by the extrusion of the particles. The surface of the particles is not in continuous contact with the surface of the sheet. The edge pressing mechanism 7 presses the sheet to the middle position of the top of the hydraulic support mechanism 6. The first hydraulic cylinder 4 drives the die 5 to move downward, and the die 5 extrude the sheet. The second forming cavity 67 and the lifting component 64 perform deep drawing on the deep cylindrical shielding cylinder. The liquid storage cavity 62 stores high-viscosity liquid inside. The high-viscosity liquid contacts the bottom of the sheet through the anti-sticking component 65, thereby preventing the liquid from adhering to the surface of the sheet and causing demolding and cleaning difficulties. The high-viscosity liquid has a larger tension. Compared with the low-viscosity liquid, the high-viscosity liquid has a greater supporting force on the sheet without causing the problem of discontinuity of the contact surface of the sheet. The die 5 impacts downward, and the support of the high-viscosity liquid prevents the sheet from wrinkling. The liquid guide component 66 stores the extruded high-viscosity liquid, which solves the problem that the extrusion of the particles will make the surface of the shielding cylinder uneven.

[0043] Second embodiment: Figure 3 , Figure 4 , Figure 5 As shown, the lifting component 64 includes a lifting block 641, the middle position of the bottom of the lifting block 641 is fixedly installed on the output end of the second hydraulic cylinder 63, the inner side of the lifting block 641 is provided with a first molding cavity 642, the lifting component 64 also includes a guide slide 644, the top of the guide slide 644 is fixedly installed at the bottom of the lifting block 641 near the edge, the bottom of the lifting block 641 is provided with an opening 643, the anti-sticking component 65 includes a blocking body 651, the blocking body 651 is fixedly installed on the side of the die 61, the inner side of the blocking body 651 is slidably connected with an elastic rope 652, one end of the elastic rope 652 is fixedly connected with a plug 653, the anti-sticking component 65 also includes an elastic membrane 654, the surface of the elastic membrane 654 is fixedly installed near the edge at one end of the elastic rope 652 away from the plug 653, and the upper position of the inner side of the die 61 is fixedly connected with a rubber tube 655.

[0044] When in use, a groove is provided at the upper position of the inner side surface of the concave die 61, and the elastic membrane 654 is arranged inside the groove. When the sheet material is not drawn, the elastic rope 652 pulls the elastic membrane 654 to expand downward, and the blocking body 651 blocks the movement of the elastic rope 652, so that the high-viscosity liquid will not be lost or block the pipeline during transportation. The punch 5 impacts downward, and after the bottom of the punch 5 contacts the middle position of the top of the sheet material, the elastic membrane 654 is squeezed downward and embedded into the first molding cavity 642 along with the sheet material. At this time, the second hydraulic The support of the cylinder 63 prevents the lifting block 641 from moving downward, and the high-viscosity liquid inside the first molding cavity 642 is squeezed into the liquid containing cavity 62, so that the sheet material is deeply drawn in one step. The elastic membrane 654 is embedded downward into the interior of the lifting block 641, and the bottom of the elastic membrane 654 is pulled downward by the elastic rope 652. The plug 653 limits one end of the elastic rope 652, so that the high-viscosity liquid cannot overflow through the gap between the elastic membrane 654 and the die 61, thereby avoiding the problem of viscosity liquid adhering to the surface of the sheet material and making it difficult to demold.

[0045] The third embodiment: Figure 3 , Figure 5 , Figure 6 As shown, the middle position of the bottom of the lifting block 641 is fixedly installed on the output end of the second hydraulic cylinder 63, and the inner side surface of the lifting block 641 is provided with a first molding cavity 642. The lifting component 64 also includes a guide slide 644, and the top of the guide slide 644 is fixedly installed at a position near the edge of the bottom of the lifting block 641. The bottom of the lifting block 641 is provided with an opening 643. The liquid guiding component 66 includes an internal threaded barrel 661, and the surface of the internal threaded barrel 661 is fixedly installed on the inner side surface of the die 61. The side of the surface of the internal threaded barrel 661 away from the die 61 is fixedly connected to the gate opening and closing machine 662. The liquid guiding component 66 also includes a threaded rod 663, one end of the threaded rod 663 extends to the inner side surface of the internal threaded barrel 661, and the end of the threaded rod 663 close to the internal threaded barrel 661 is fixedly connected to the threaded block 664.

[0046] When in use, the rubber tube 655 is arranged above the surface of the elastic membrane 654, the punch 5 impacts the sheet material, and when the sheet material squeezes the elastic membrane 654 to the inner side of the lifting block 641, hydraulic pressure is passed into the inside of the rubber tube 655, and the rubber tube 655 expands to squeeze the elastic membrane 654, so that the liquid at the bottom of the elastic membrane 654 is less likely to overflow upward, and the first molding cavity 642 performs a deep drawing molding on the sheet material, and the liquid inside the lifting block 641 enters the liquid containing cavity 62 through the opening 643, and the hoist 662 drives the threaded rod 663 to rotate outward, and the threaded rod 663 drives the threaded rod 663 to rotate outward. The block 664 rotates and moves outward to adapt to the increase of liquid inside the liquid holding chamber 62. Subsequently, the second hydraulic cylinder 63 removes the hydraulic pressure, and the lifting block 641 moves downward. The high-viscosity liquid supports the downward movement of the lifting block 641, and the sheet material continues to be drawn downward. The second molding cavity 67 performs secondary molding on the sheet material to achieve deep cylinder drawing. The guide slide 644 slides downward on the inner side surface of the die 61 to avoid skewing and shaking of the guide slide 644 when it moves downward. The high-viscosity liquid is temporarily stored inside the internal threaded barrel 661, which can effectively avoid the loss of liquid during the transportation process.

[0047] Fourth embodiment: Figure 3 , Figure 7 As shown, the inner side surface of the concave mold 61 is fixedly installed at a position below the surface of the slide bar 2, a liquid containing cavity 62 is opened near the middle of the inner side surface of the concave mold 61, a lifting component 64 is slidably connected to the inner side surface of the concave mold 61 near the liquid containing cavity 62, an anti-sticking component 65 is fixedly connected to the upper position of the inner side surface of the concave mold 61, a liquid guiding component 66 is fixedly connected to the lower position of the surface of the concave mold 61, and a second molding cavity 67 is opened at the upper position of the inner side surface of the concave mold 61;

[0048] The hydraulic support mechanism 6 also includes a second hydraulic cylinder 63, and the edge pressing mechanism 7 includes a lifting assembly 71. The bottom of the lifting assembly 71 is fixedly installed on the top of the top plate 3, and the bottom of the lifting assembly 71 is fixedly connected to a fixed frame 72. The bottom of the fixed frame 72 is fixedly connected to an inner hollow ring 73, and the surface of the fixed frame 72 near the slide rod 2 is fixedly connected to a clamping assembly 74.

[0049] When in use, the sheet is placed on the top of the die 61. At this time, the axis of the sheet is not in line with the axis of the second molding cavity 67. The lifting assembly 71 releases the fixed frame 72, and the inner hollow ring 73 descends to contact the top of the sheet. At this time, the interior of the inner hollow ring 73 is not filled with liquid. The four clamping assemblies 74 move close to the inner hollow ring 73. The disc-structured sheet is clamped and centered by the clamping assemblies 74. The axis of the sheet is in line with the axis of the second molding cavity 67. The sheet is directly above the lifting assembly 64. Then, liquid is injected into the interior of the inner hollow ring 73. The body increases the weight of the inner hollow ring 73, and a determined weight of liquid can be added as needed to ensure that the pressure on the sheet is neither too large nor too small. The die 5 moves downward, and the sheet is deep-drilled through the lifting component 64 and the second forming cavity 67 in turn, thereby performing a deep-drawing forming on the shielding tube. The lifting component 71 does not apply a downward thrust to the inner hollow ring 73, and the sheet is only pressed by the inner hollow ring 73 and the gravity of the internal liquid, which solves the problem that the pressure applied by the pressure ring is too small, causing the sheet to wrinkle, and if the pressure is too large, the sheet will be torn.

[0050] Fifth embodiment: Figure 7 , Figure 8 , Fig. 9 As shown, the lifting assembly 71 includes a cylinder 711, the bottom of which is fixedly mounted on the top of the base 1, the inner side surface of the cylinder 711 is provided with an inner tooth surface 712, the top of the cylinder 711 is fixedly connected with an electromagnet 713, the lifting assembly 71 also includes a gear 714, the surface of the gear 714 is slidably connected to the inner side surface of the cylinder 711, the gear 714 is magnetic, an extension rod 715 is fixedly connected to the position between the bottom of the gear 714 and the top of the fixed frame 72, the clamping assembly 74 includes a frame 741, the bottom of the frame 741 is fixedly mounted on the top of the fixed frame 72, the inner side surface of the frame 741 is fixedly connected with an electric cylinder 742, and the output end of the electric cylinder 742 is fixedly connected with a clamping body 743.

[0051] When in use, when the sheet is placed above the die 61, the electromagnet 713 is energized, and the electromagnet 713 is energized to attract the magnetic gear 714, and the gear 714 is attracted to slide upward along the inner tooth surface 712 and is in close contact with the electromagnet 713, and the extension rod 715 drives the fixed frame 72 to move upward, the inner hollow ring 73 is lifted up, and the sheet is placed on the top of the die 61, and then the electromagnet 713 is de-energized, the gear 714 slides downward, and the bottom of the inner hollow ring 73 is directly in contact with the top of the sheet. The frame 741 supports and limits the electric cylinder 742, and the electric cylinder 742 drives the clamping body 743 to move toward the inner hollow ring 73. The edge of the sheet is clamped by the four clamping bodies 743, and then liquid is introduced into the inner hollow ring 73 to increase the weight of the inner hollow ring 73, thereby increasing the pressing force of the inner hollow ring 73 on the sheet. During the pressing process of the inner hollow ring 73 on the sheet, the extension rod 715 does not apply additional pressure to the inner hollow ring 73, thereby making the pressing force of the sheet during deep drawing more controllable.

[0052] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A liquid filling deep drawing forming device for an explosion-proof shielding tube, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a slide bar (2), the top of the slide bar (2) is fixedly connected to a top plate (3), the top of the top plate (3) is fixedly connected to a first hydraulic cylinder (4), and the output end of the first hydraulic cylinder (4) is fixedly connected to a punching die (5), and further comprises: A hydraulic support mechanism (6), the inner side surface of the hydraulic support mechanism (6) being fixedly mounted below the surface of the slide bar (2), the hydraulic support mechanism (6) being used for deep drawing the sheet metal into a shielding cylinder and for supporting the sheet metal forming surface using a high-viscosity liquid; A edge pressing mechanism (7), the edge pressing mechanism (7) is fixedly mounted on the top of the top plate (3), the lower portion of the surface of the edge pressing mechanism (7) is slidably connected to the surface of the slide bar (2), and the edge pressing mechanism (7) is used for directional clamping of the sheet metal and for pressing the sheet metal near the edge during the drawing process; The hydraulic support mechanism (6) comprises a die (61), the inner side surface of the die (61) being fixedly mounted below the surface of the slide bar (2), a liquid containing cavity (62) being provided near the middle of the inner side surface of the die (61), a lifting assembly (64) being slidably connected to the inner side surface of the die (61) near the liquid containing cavity (62), an anti-sticking assembly (65) being fixedly connected above the inner side surface of the die (61), a liquid guiding assembly (66) being fixedly connected below the surface of the die (61), and a second molding cavity (67) being provided above the inner side surface of the die (61); The hydraulic support mechanism (6) further comprises a second hydraulic cylinder (63), the bottom of the second hydraulic cylinder (63) being fixedly mounted at the middle position of the top of the base (1), and the output end of the second hydraulic cylinder (63) being fixedly connected to the bottom of the lifting assembly (64); The lifting assembly (64) comprises a lifting block (641), the middle part of the bottom of the lifting block (641) is fixedly mounted on the output end of the second hydraulic cylinder (63), and the inner side surface of the lifting block (641) is provided with a first molding cavity (642); The lifting assembly (64) further comprises a guide slide (644), the top of the guide slide (644) being fixedly mounted at a position close to the edge of the bottom of the lifting block (641), and an opening (643) is provided at the bottom of the lifting block (641); The anti-sticking component (65) comprises a blocking body (651), the blocking body (651) is fixedly mounted on the side of the concave mold (61), an inner side surface of the blocking body (651) is slidably connected to an elastic rope (652), and one end of the elastic rope (652) is fixedly connected to a plug (653); The anti-sticking component (65) further comprises an elastic membrane (654), the surface of the elastic membrane (654) being fixedly mounted at a position close to the edge thereof at one end of the elastic rope (652) away from the plug (653), and a rubber tube (655) being fixedly connected at a position above the inner side surface of the concave mold (61).

2. The liquid filling deep drawing forming equipment of an explosion-proof shielding tube according to claim 1 is characterized in that: The liquid guide assembly (66) comprises an internally threaded barrel (661), the surface of the internally threaded barrel (661) being fixedly mounted on the inner side surface of the concave die (61), and a side of the surface of the internally threaded barrel (661) away from the concave die (61) being fixedly connected to a hoist (662).

3. The liquid filling deep drawing forming equipment of an explosion-proof shielding tube according to claim 2 is characterized in that: The liquid guiding assembly (66) further comprises a threaded rod (663), one end of which extends to the inner side surface of the internal threaded barrel (661), and one end of the threaded rod (663) close to the internal threaded barrel (661) is fixedly connected to a threaded block (664).

4. The liquid filling deep drawing forming equipment of the explosion-proof shielding tube according to claim 3 is characterized in that: The edge pressing mechanism (7) comprises a lifting component (71), the bottom of the lifting component (71) is fixedly mounted on the top of the top plate (3), the bottom of the lifting component (71) is fixedly connected to a fixing frame (72), the bottom of the fixing frame (72) is fixedly connected to an inner hollow ring (73), and the surface of the fixing frame (72) is fixedly connected to a clamping component (74) at a position close to the slide rod (2).

5. The liquid filling deep drawing forming equipment of the explosion-proof shielding tube according to claim 4 is characterized in that: The clamping assembly (74) comprises a frame (741), the bottom of the frame (741) being fixedly mounted on the top of the fixing frame (72), the inner side surface of the frame (741) being fixedly connected to an electric cylinder (742), and the output end of the electric cylinder (742) being fixedly connected to a clamping body (743).

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