Ejection mechanism of pot body drawing die

Abstract

The invention belongs to the technical field of pot body machining dies, and particularly relates to an ejection mechanism of a pot body drawing die, the ejection mechanism comprises a rack, the rack is provided with a lower pressing ring and a hydraulic system used for lifting the lower pressing ring, and the two edges of the lower pressing ring are both provided with oil absorption cloth used for limiting drawing oil; the first groove and the second groove are formed in the top face of the lower pressing ring in a spaced mode, and the first groove and the second groove are both used for containing stretching oil on the outer surface of the pot body; the skin and the telescopic piece are vertically and sequentially arranged in the first groove, so that part of the stretching oil in the first groove overflows and lubricates the pot body along an annular path, or the skin and the pot body are lifted through rebounding and resetting of the telescopic piece, and the pot body can be taken down by a single hand through the interval between the lower pressing ring and the pot body. During hydraulic pressure, stretching oil is extruded to lubricate a clamped pot body along an annular path, the gap between the supporting face and the pot body is opened after hydraulic pressure is carried out so that the pot body can be taken down with one hand, and the yield of a pot body production line can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pot body processing dies, and in particular relates to an ejection mechanism of a pot body drawing die. Background Art

[0002] As more and more modern cast iron or aluminum alloy pans covered with new composite coatings emerge on the market, they use a more bake-resistant coating to improve the problem of difficult cleaning of traditional cast iron pans, perform well in certain baking applications, and reduce the rate at which traditional cast iron pans rust due to oxidation. They are becoming more and more popular among the public; the required production capacity increases year by year. Therefore, existing coated alloy pans are mostly produced using hydraulic molds, which can quickly form the pot body and easily meet the production capacity gap.

[0003] The initial forming of the coated alloy pot can be done by drawing or by melting the raw materials and injecting them into the mold and cooling them. After the pot body is formed, a hydraulic system is generally used to lift the pot body to demould it. During the demoulding process, the following problems still need to be improved: 1. When the pot body is lifted up with the opening facing downward, the annular surface of the pot body opening is fully supported and demoulding is achieved by the upward force of the hydraulic system. However, the opening of the pot body is blocked, so the pot body needs to be removed by both hands after it is ejected, which is not conducive to speeding up the completion of the pot body ejection action.

[0004] 2. The open annular surface of the pot body often needs to be coated with stretching oil. The adhesion of the stretching oil is achieved by pre-coating the stretching oil on the supporting surface. However, the supporting surface is very flat, which makes it easy for the stretching oil to overflow after being squeezed by the mold. The stretching oil may be partially missing at the opening of the pot body, which is not conducive to maintaining the lubrication effect of the top surface of the pot body along the annular path. Summary of the Invention

[0005] The purpose of the present invention is to provide an ejection mechanism for a pot body drawing die. During hydraulic operation, the stretching oil is squeezed out to lubricate the clamped pot body along a circular path. After hydraulic operation, the gap between the support surface and the pot body is opened to allow the pot body to be removed with one hand, thereby helping to improve the production capacity of the pot body production line.

[0006] The technical solutions adopted by the present invention are as follows: An ejection mechanism for a pot body drawing die, comprising: A frame, wherein the frame is provided with a lower pressure ring and a hydraulic system for raising and lowering the lower pressure ring, and oil-absorbing cloths for limiting stretching oil are provided on both edges of the lower pressure ring; A first groove and a second groove are spaced apart on the top surface of the lower pressure ring, wherein the first groove and the second groove are both used to accommodate stretching oil on the outer surface of the pot body; The skin and the telescopic part are vertically arranged in sequence inside the first groove. When the pot body is hydraulically pressed, the skin and the telescopic part sink into the first groove, causing part of the tensile oil in the first groove to overflow and lubricate the pot body along a circular path, or the rebound reset of the telescopic part lifts the skin and the pot body, so that the gap between the lower pressure ring and the pot body can be used to remove the pot body with one hand.

[0007] As an optional solution, the outer surface of the skin is vertically connected with a spiral spring piece and an annular head in sequence, and the annular head avoids the telescopic member; When the pot body is hydraulically pressurized, the spiral spring piece and the annular head shrink into a cup shape for temporarily retaining the stretching oil.

[0008] As an optional solution, a nylon plate and a foot support are vertically arranged in sequence inside the second groove, and an oil leakage hole is opened on the surface of the nylon plate; When the pot body is hydraulically pressurized, the nylon plate and the foot support support the pot body in the second groove, so that the oil leakage hole flows along the annular path to circulate the stretching oil to lubricate the pot body.

[0009] As an optional solution, the hydraulic system includes a first hydraulic cylinder located at the bottom of the frame, the cylinder rod of the first hydraulic cylinder extends vertically into the frame, a pot core mold is provided inside the frame along the central axis of the lower pressure ring, and the first hydraulic cylinder is used to eject the pot body from the pot core mold.

[0010] As an optional solution, the frame includes a bottom slide connected to the cylinder rod of the first hydraulic cylinder, a bottom guide rail passing through the bottom slide, and a first column fixed to the top surface of the bottom slide, and the first column is connected to the lower pressure ring.

[0011] As an optional solution, a side hole connecting the first groove and the second groove is provided inside the lower pressure ring, and a limiting groove for fitting the edge of the skin is provided at the opening of the first groove.

[0012] As an optional solution, the telescopic member includes a first elastic member located inside the first groove, foot plates fixed to both ends of the first elastic member, and a second elastic member fixed to the outside of the foot plates. The top of the foot plates is hinged with a hinge plate and an arc-shaped support in sequence, and the arc-shaped support contacts the skin.

[0013] As an optional solution, a horizontal sliding rod is fixed inside the first groove, which runs transversely through the first elastic member, the foot plate and the second elastic member, and the first hinge section and the second hinge section for connecting the foot plate are fixed at intervals on the arc-shaped supporting bottom.

[0014] As an optional solution, the end of the arc-shaped support is integrally installed with a side baffle for centering the pot body, and multiple side baffles are distributed in a circular array on the top of the lower pressure ring. The top surface of the arc-shaped support is provided with a bite groove connected to the skin.

[0015] As an optional solution, a recessed portion and an inclined ramp adapted to the side baffle are integrally provided on the skin, and a movable space formed by the recessed portion and the inclined ramp is used for deformation of the telescopic member.

[0016] The technical effects achieved by the present invention are: The present invention provides a groove on the supporting surface of the pot body, and the first groove and the second groove distributed in a circular array are used to accommodate stretching oil on the outer surface of the pot body, limiting the stretching oil to be distributed in an annular band, and will not hinder the continuous clamping of the metal disc. In addition, the skin and the telescopic part are used in combination at the groove, and the stretching oil will infiltrate the skin and the telescopic part. When the telescopic part pushes up the skin part and extends out, it is convenient for the metal disc to be quickly positioned and centered. When the pot body is hydraulically operated, the sinking of the skin and the telescopic part will squeeze the stretching oil to lubricate the clamped pot body along an annular path. After the pot body is hydraulically formed, the rebound reset of the telescopic part will lift the skin and the pot body, and a gap is generated between the supporting surface and the pot body for removing the pot body with one hand, so that after the hydraulic system pushes out the pot body, the staff can remove the pot body with one hand and free up the other hand to load the alloy disc, taking into account the rapid completion of the pot body ejection finishing action and the synchronous loading, thereby helping to improve the production capacity of the pot body production line to meet the market's huge demand for frying pans.

[0017] According to the present invention, when the pot body is hydraulically pressurized, the annular head first elastically contacts the upper pressure ring to prevent the upper pressure ring from violently colliding, and can pre-tighten the skin to play the role of a limiting footplate. As the skin sinks into the first groove, the spiral spring piece is gradually compressed until the spiral spring piece and the annular head are reduced to a cup shape for temporarily retaining stretching oil. The stretching oil can be effectively retained on the outside of the skin. Even if the stretching oil is shaken off after the skin is lifted up, the stretching oil can be obtained later for continuous lubrication in the clamping position.

[0018] The present invention arranges a nylon plate and a foot support vertically in sequence inside the second groove. Since an oil leakage hole is opened on the surface of the nylon plate, when the pot body is hydraulically pressurized, the nylon plate and the foot support can be used to support the pot body in the second groove, while maintaining a larger supporting surface, allowing the oil leakage hole to flow stretching oil along a circular path to lubricate the pot body. The foot support based on stainless steel alloy can firmly support the nylon plate and will not block the stretching oil flowing between the first groove and the second groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of an ejection mechanism of a pot body drawing die of the present invention; Figure 2 It is a front view of the frame of the present invention; Figure 3 This is a top view of the lower pressure ring of the present invention in a state where stretching oil is applied; Figure 4 is a top view of the lower pressure ring of the present invention in an unloaded state; Figure 5 This is a front view of the telescopic member of the present invention in a state of being fitted with the skin; Figure 6 This is a front view of the telescopic member of the present invention in an unloaded state; Figure 7 is a top view of the nylon plate of the present invention; Figure 8 This is a front view of an aluminum alloy pot according to the present invention; Figure 9 This is a front view of a stainless steel pot according to the present invention; Figure 10 is a system block diagram of an external controller of the present invention; Figure 11 It is a schematic diagram of the control signal of a single hydraulic cylinder in the hydraulic system of the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Frame; 101. Workbench; 102. Top guide rail; 103. Bottom guide rail; 104. Top slide; 105. Bottom slide; 106. Guide hole; 107. First column; 108. Second column; 2. Cabinet; 201. Heat dissipation door; 202. Emergency stop button; 3. First hydraulic cylinder; 4. Second hydraulic cylinder; 5. Lower pressure ring; 6. Upper pressure ring; 7. Pot mold; 8. First groove; 9. Skin; 10. Second Groove; 11. Side hole; 12. Limiting groove; 13. First elastic member; 14. Foot plate; 15. Second elastic member; 16. Hinge plate; 17. Arc support; 18. Horizontal slide bar; 19. First hinge section; 20. Second hinge section; 21. Side baffle; 22. Engaging groove; 23. Recessed portion; 24. Inclined slope piece; 25. Spiral spring piece; 26. Ring head; 27. Foot support; 28. Nylon plate; 29. ​​Oil leakage hole. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following examples. It should be understood that the following text is only used to describe one or more specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.

[0022] There are many types of frying pans on the market today, which can be divided into stainless steel pans, cast iron pans, wrought iron pans, aluminum alloy pans, ceramic pans, carbon steel pans, copper pans, etc. according to their materials. However, mainstream frying pans are mostly durable stainless steel pans, convenient and lightweight aluminum alloy pans, and iron pans that can be used for stir-frying. The present invention targets the stainless steel pans or aluminum alloy pans in mainstream frying pans, optimizes the ejection action during the drawing and forming process of the pot body, and specifically addresses the problem that the traditional pot body ejection finishing action requires both hands to remove the pot body. A certain gap is given under the pot body, and one hand can be inserted into the gap to implement the operation of removing the pot body with one hand, which facilitates and speeds up the completion of the pot body ejection finishing action.

[0023] like Figures 1-10 As shown, an ejection mechanism for a pot body drawing die includes a frame 1 and a supporting hydraulic system. When processing the pot body, a metal disc is placed inside the frame 1, and the hydraulic system is activated by an external controller to apply a load to the metal disc, so that the metal disc gradually fits the pot body mold 7 set inside the frame 1 from the middle and is hydraulically pressed into the pot body. After a certain period of time, the pot body is lifted by the hydraulic system and ejected from the pot body mold 7.

[0024] Refer to the attached Figure 1 and Figure 2 The hydraulic system used in this embodiment includes a first hydraulic cylinder 3 located at the bottom of the frame 1 and a second hydraulic cylinder 4 located at the top of the frame 1. The hydraulic control process of the two hydraulic cylinders is as follows: Figure 10 and Figure 11 As shown, the motor is controlled to rotate forward so that the hydraulic oil pump outputs hydraulic oil, and only the output branch of the control solenoid valve is opened to extend the cylinder rod; At this time, the cylinder rods of the first hydraulic cylinder 3 and the second hydraulic cylinder 4 are both extended vertically into the frame 1, so that the hydraulic system applies load to the metal disc and starts hydraulic operation. Since the pot core mold 7 is arranged along the central axis of the lower pressure ring 5, on the contrary, only the input branch of the control solenoid valve is opened, so that the cylinder rods are shortened and separated from each other; When the rod of the second hydraulic cylinder 4 is higher than the pot inner mold 7, the demoulding step can be implemented. The rod of the first hydraulic cylinder 3 extends at a uniform speed to eject the pot body from the pot inner mold 7. After completing the pot body ejection action, the rod of the first hydraulic cylinder 3 is shortened and reset.

[0025] Refer to the attached Figure 1 and Figure 2 In order to stably carry the metal disc, in this embodiment, a lower pressure ring 5 fixed to the cylinder rod of the first hydraulic cylinder 3 by bolts and an upper pressure ring 6 fixed to the cylinder rod of the second hydraulic cylinder 4 are provided inside the frame 1. During the loading stage, the metal disc can be placed centered on the lower pressure ring 5; When the hydraulic system applies a load, the upper pressure ring 6 and the lower pressure ring 5 close and clamp the metal disc, and then drive the metal disc downward at a uniform speed to stick to the pot mold 7; because the frame 1 includes a workbench 101 and a top guide rail 102 and a bottom guide rail 103 fixed to both sides of the workbench 101 by bolts, the top guide rail 102 can be used to support the second hydraulic cylinder 4, and the bottom guide rail 103 can be fixedly connected to the first hydraulic cylinder 3, which is conducive to maintaining the stability of the hydraulic system; In order to keep the lower pressure ring 5 parallel to the upper pressure ring 6, the present embodiment further slides on the top guide rail 102 and sets a top slide 104 and a second column 108 which are fixedly connected to the cylinder rod of the second hydraulic cylinder 4 by bolts in sequence, and the second column 108 is connected to the upper pressure ring 6; A bottom slide 105 and a first column 107, which are fixedly connected to the cylinder rod of the first hydraulic cylinder 3 in sequence by bolts, are slidably arranged on the bottom guide rail 103, and the first column 107 is connected to the lower pressure ring 5 to realize vertical straightening of the lower pressure ring 5 and the upper pressure ring 6. In addition, the bottom guide rail 103 passes through the bottom slide 105, and the first column 107 is fixed to the top surface of the bottom slide 105, so that the bottom slide 105 can drive the lower pressure ring 5 to rise vertically outside the pot body mold 7 to complete the pot body ejection action.

[0026] A plurality of guide holes 106 are provided on the workbench 101 . In this embodiment, the number of the first columns 107 is set to 8, so that the 8 first columns 107 pass through the guide holes 106 to achieve the guiding and straightening of the lower pressure ring 5 .

[0027] Furthermore, a cabinet 2 is fixed to the bottom of the rack 1 by bolts, and the cabinet 2 is used for grounding to stably support the rack 1. A heat dissipation door 201 that can be opened or closed and an emergency stop button 202 are installed on the cabinet 2. Figure 10 The emergency stop button 202 is electrically connected to an external controller for controlling the emergency stop of the hydraulic system, for example, by transmitting the emergency stop signal through a relay.

[0028] Before loading the metal disc, applying stretching oil is an essential step. The stretching oil is mainly applied to the surface of the lower pressure ring 5 using an oil brush, so that the metal disc can adhere to the stretching oil after being placed on the lower pressure ring 5, which can reduce the friction during the drawing process. However, the supporting surface is very flat, which makes it easy for the stretching oil to overflow after being squeezed. The stretching oil may be partially missing at the opening of the pot body, which is not conducive to maintaining the lubrication of the top surface of the pot body along the annular path.

[0029] Refer to the attached Figure 2 、 Figure 3 and Figure 5To improve the lubrication process of the pot body, in this embodiment, a first groove 8 and a second groove 10 are formed at intervals on the top surface of the lower pressure ring 5. The three first grooves 8 and the three second grooves 10 are used to accommodate the stretching oil on the outer surface of the pot body, limiting the stretching oil to be distributed in an annular band. Moreover, the first grooves 8 and the second grooves 10 are narrower than the opening of the pot body, so that the upper pressure ring 6 and the lower pressure ring 5 can continue to clamp the metal disc after closing. In this embodiment, a skin 9 and a telescopic member are vertically arranged in sequence inside the first groove 8. The stretching oil will soak the skin 9 and the telescopic member, and the telescopic member will lift the skin 9 partly out of the first groove 8. This part surrounds the metal disc, making it easy to quickly position and center the metal disc. When the pot body is hydraulically pressed, the skin 9 and the telescopic member sink into the first groove 8 to squeeze the stretching oil, causing the stretching oil in the first groove 8 to partially overflow and lubricate the clamped pot body along a circular path. After the pot body is hydraulically formed, the hydraulic system releases the pot body. At this time, the rebound reset of the telescopic member will lift the skin 9 and the pot body, creating a gap between the lower pressure ring 5 and the pot body for removing the pot body with one hand. This makes it easier for the worker to remove the pot body with one hand after the hydraulic system pushes out the pot body. This frees up the other hand to load the alloy wafers, while also taking into account the rapid completion of the pot ejection and synchronous loading action, helping to increase the production capacity of the pot production line to meet the huge market demand for frying pans.

[0030] The skin 9 can be made of rubber, silicone and other materials. In this embodiment, fluorosilicone rubber is preferably used. Fluorosilicone rubber has good oil resistance and wear resistance, hardly absorbs stretching oil, and maintains good toughness without breaking after multiple pressures. Oil-absorbing cloth for limiting the stretching oil is provided on both edges of the lower pressure ring 5. The oil-absorbing cloth can be made of nylon cloth to avoid blocking the alloy disc while absorbing the stretching oil at the edge of the lower pressure ring 5. The oil-absorbing cloth saturated with the stretching oil is in a double ring shape to block the stretching oil, making it convenient for the stretching oil to remain on the contact surface of the pot body.

[0031] See also Figure 9 Taking stainless steel pot as an example, the stroke required for pot body drawing is small, the contact area between pot body and pot inner mold 7 is also small, and less stretching oil is used in the drawing process. Figure 8 Taking the aluminum alloy pot as an example, the stroke required for drawing the pot body is larger, the contact area between the pot body and the pot inner mold 7 is larger, and the amount of drawing oil used in the process is larger.

[0032] Refer to the attached Figure 3 and Figure 4 When adding stretching oil, since the side hole 11 connecting the first groove 8 and the second groove 10 is opened inside the lower pressure ring 5, the stretching oil flows between the first groove 8 and the second groove 10, and the stretching oil can be distributed in an annular belt shape; A limiting groove 12 for fitting the edge of the skin 9 is provided at the opening of the first groove 8. The limiting groove 12 can increase the contact area between the edge of the skin 9 and the first groove 8, and the two are more closely connected. When the skin 9 is compressed and deformed, its contact point has better toughness. After the skin 9 is glued to the limiting groove 12 with glue, the edge of the skin 9 can be prevented from tearing or debonding.

[0033] Refer to the attached Figure 3 、 Figure 5 and Figure 6 The telescopic member used in this embodiment includes a first elastic member 13 located inside the first groove 8, foot plates 14 fixed to both ends of the first elastic member 13, and a second elastic member 15 fixed to the outside of the foot plates 14. Since the top of the foot plates 14 are hinged with a hinge plate 16 and an arc-shaped support 17 in sequence, when the first elastic member 13 tightens the two foot plates 14, the height of the two foot plates 14 increases and lifts the arc-shaped support 17; At this time, the arc-shaped support 17 will contact the skin 9 and push up the skin 9 to extend out of the first groove 8, which is used to limit the center of the metal disc. When the skin 9 is under pressure, it will drive the arc-shaped support 17 to drop into the first groove 8, push the hinge plate 16 to both sides and compress the second elastic member 15. The skin 9, foot plate 14 and arc-shaped support 17 can be used to squeeze the stretching oil to overflow, so that this part of the stretching oil gradually contacts the metal disc.

[0034] Refer to the attached Figure 3 、 Figure 5 and Figure 6 A horizontal slide bar 18 is welded inside the first groove 8 and passes through the first elastic member 13, the foot plate 14 and the second elastic member 15 in a transverse direction, so that when the arc-shaped support 17 moves, the arc-shaped support 17 can drive the first elastic member 13, the foot plate 14 and the second elastic member 15 to move along the horizontal slide bar 18; The bottom of the arc-shaped support 17 is welded with a first hinge joint 19 and a second hinge joint 20 at intervals for connecting the foot plate 14, so that the two foot plates 14 can swing relative to the first hinge joint 19 and the second hinge joint 20 respectively. These hinge joints facilitate the smooth lifting and lowering of the arc-shaped support 17. When the arc-shaped support 17 carries a metal disc, the arc-shaped support 17 can be flat against the skin 9 due to pressure.

[0035] Refer to the attached Figure 5 and Figure 6 The end of the arc-shaped support 17 is integrally installed with a side baffle 21 for centering the pot body. Multiple side baffles 21 are distributed in a circumferential array on the top of the lower pressure ring 5 to form an annular enclosure for placing metal discs, which can quickly position the metal discs in the center; A bite groove 22 connected to the skin 9 is provided on the top surface of the arc-shaped support 17 , and the inner surface of the skin 9 is partially glued to the bite groove 22 to prevent the skin 9 from breaking away from the arc-shaped support 17 , thereby effectively reducing the friction between the skin 9 and the arc-shaped support 17 .

[0036] Refer to the attached Figure 5 and Figure 6 The skin 9 is integrally provided with a recessed portion 23 and an inclined slope piece 24 adapted to the side baffle 21, so that the skin 9 fits the top of the telescopic part. The movable space surrounded by the recessed portion 23 and the inclined slope piece 24 is used for the deformation of the telescopic part. On the one hand, it is conducive to the metal disc falling on the relatively flat area of ​​the skin 9 and the telescopic part. On the other hand, the skin 9 can have enough margin for it to be stretched. For example, when the telescopic part is raised, the skin 9 will be lifted.

[0037] Refer to the attached Figure 1 、 Figure 3 and Figure 5 In this embodiment, a spiral spring piece 25 and an annular head 26 are vertically connected to the outer surface of the skin 9 in sequence. The spiral spring piece 25 and the annular head 26 can be made of the same material as the skin 9. They are integrally formed with a mold or are formed separately and then heat-fused together. During use, the annular head 26 is kept away from the telescopic member. When the pot body is hydraulically pressurized, the upper pressure ring 6 first contacts the annular head 26 to prevent the upper pressure ring 6 from violently colliding with the arc support 17, and can pre-tighten the skin 9, playing the role of limiting the foot plate 14; As the skin 9 sinks into the first groove 8, the spiral spring piece 25 is gradually compressed until the spiral spring piece 25 and the annular head 26 are reduced to a cup shape for temporarily retaining the stretching oil, which can effectively retain the stretching oil on the outside of the skin 9. Even if the stretching oil is shaken off after the skin 9 is lifted up, the stretching oil can be obtained later for continuous lubrication at the clamping position.

[0038] Refer to the attached Figure 2 、 Figure 3 and Figure 7 In this embodiment, a nylon plate 28 and a foot support 27 are vertically arranged in sequence inside the second groove 10. Since an oil leakage hole 29 is opened on the surface of the nylon plate 28, when the pot body is hydraulically pressurized, the nylon plate 28 and the foot support 27 can be used to support the pot body in the second groove 10, while maintaining a large supporting surface, allowing the oil leakage hole 29 to flow along a circular path to lubricate the pot body. The foot support 27 based on stainless steel alloy can firmly support the nylon plate 28 without blocking the stretching oil flowing between the first groove 8 and the second groove 10.

[0039] The working principle of the present invention is as follows: when working, the first hydraulic cylinder 3 and the second hydraulic cylinder 4 are controlled to open the distance between the lower pressure ring 5 and the upper pressure ring 6. In the loading stage, the metal disc is placed centered on the lower pressure ring 5. When the hydraulic system applies a load, the upper pressure ring 6 and the lower pressure ring 5 close and clamp the metal disc, and then drive the metal disc downward at a uniform speed to stick to the pot mold 7.

[0040] At the same time, the three first grooves 8 and the three second grooves 10 are used to accommodate stretching oil on the outer surface of the pot body, limiting the stretching oil to be distributed in an annular band, and the first grooves 8 and the second grooves 10 are narrower than the opening of the pot body, so that the upper pressure ring 6 and the lower pressure ring 5 can continue to clamp the metal disc after closing, and the telescopic part will lift up the skin 9 and extend part out of the first groove 8, which surrounds the metal disc for quick positioning and centering of the metal disc.

[0041] When the hydraulic pressure is started, the upper pressure ring 6 first contacts the annular head 26 to prevent the upper pressure ring 6 from violently colliding with the arc support 17 and pre-tightening the skin 9, which plays the role of limiting the foot plate 14. As the skin 9 sinks into the first groove 8, the spiral spring piece 25 is gradually compressed until the spiral spring piece 25 and the annular head 26 are reduced to a cup shape for temporarily retaining the stretching oil, effectively retaining the stretching oil on the outside of the skin 9. Even if the stretching oil is shaken off after the skin 9 is lifted up, the stretching oil can be obtained later, and continuous lubrication is provided in the clamping position.

[0042] When the skin 9 is immersed in the first groove 8, the skin 9 and the telescopic part sink into the first groove 8 to squeeze the stretching oil, causing part of the stretching oil in the first groove 8 to overflow and lubricate the clamped pot body along a circular path. After the pot body is hydraulically formed, the hydraulic system releases the pot body. At this time, the rebound reset of the telescopic part lifts the skin 9 and the pot body, creating a gap between the lower pressure ring 5 and the pot body for removing the pot body with one hand. When the hydraulic system pushes out the pot body, the staff can remove the pot body with one hand, freeing up the other hand to load the alloy wafers.

[0043] When the pot body is hydraulically pressurized, the nylon plate 28 and the foot support 27 are used to support the pot body in the second groove 10, while maintaining a larger supporting surface, allowing the oil leakage hole 29 to flow the stretching oil along a circular path to lubricate the pot body. The foot support 27 firmly supports the nylon plate 28 and will not block the stretching oil flowing between the first groove 8 and the second groove 10.

[0044] The foregoing merely represents optional embodiments of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained herein shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.

Claims

1. A ejection mechanism for a pot drawing die, characterized in that: include: A frame (1), wherein the frame (1) is provided with a lower pressure ring (5) and a hydraulic system for raising and lowering the lower pressure ring (5), and oil-absorbing cloths for limiting stretching oil are provided on both edges of the lower pressure ring (5); A first groove (8) and a second groove (10) are provided at intervals on the top surface of the lower pressure ring (5), wherein the first groove (8) and the second groove (10) are both used for accommodating stretching oil on the outer surface of the pot body; The skin (9) and the telescopic member are vertically arranged in sequence inside the first groove (8). When the pot body is hydraulically operated, the skin (9) and the telescopic member sink into the first groove (8), causing the stretching oil in the first groove (8) to partially overflow and lubricate the pot body along an annular path, or the rebound of the telescopic member lifts the skin (9) and the pot body, so that the gap between the lower pressure ring (5) and the pot body is used to remove the pot body with one hand.

2. The ejection mechanism according to claim 1, characterized in that: The outer surface of the skin (9) is vertically connected in sequence with a spiral spring piece (25) and an annular head (26), and the annular head (26) avoids the telescopic member; When the pot body is hydraulically pressurized, the spiral spring piece (25) and the annular head (26) shrink into a cup shape for temporarily retaining the stretching oil.

3. The ejection mechanism according to claim 1, characterized in that: A nylon plate (28) and a foot support (27) are vertically arranged in sequence inside the second groove (10), and an oil leakage hole (29) is opened on the surface of the nylon plate (28); When the pot body is hydraulically pressurized, the nylon plate (28) and the foot support (27) support the pot body in the second groove (10), so that the oil leakage hole (29) circulates the stretching oil along the annular path to lubricate the pot body.

4. The ejection mechanism according to claim 1, characterized in that: The hydraulic system comprises a first hydraulic cylinder (3) located at the bottom of the frame (1), and a cylinder rod of the first hydraulic cylinder (3) extends vertically into the frame (1); A pot core mold (7) is provided inside the frame (1) along the central axis of the lower pressure ring (5), and the first hydraulic cylinder (3) is used to eject the pot body from the pot core mold (7).

5. The ejection mechanism according to claim 4, characterized in that: The frame (1) includes a bottom slide (105) connected to the cylinder rod of the first hydraulic cylinder (3), a bottom guide rail (103) passing through the bottom slide (105), and a first column (107) fixed to the top surface of the bottom slide (105), wherein the first column (107) is connected to the lower pressure ring (5).

6. The ejection mechanism according to claim 1, characterized in that: A side hole (11) is provided inside the lower pressure ring (5) and is connected to the first groove (8) and the second groove (10); A limiting groove (12) for fitting the edge of the skin (9) is provided at the opening of the first groove (8).

7. The ejection mechanism according to claim 1, characterized in that: The telescopic member comprises a first elastic member (13) located inside the first groove (8), foot plates (14) fixed to both ends of the first elastic member (13), and a second elastic member (15) fixed to the outside of the foot plates (14); The top of the foot plate (14) is hinged with a hinge plate (16) and an arc-shaped support (17) in sequence, and the arc-shaped support (17) contacts the skin (9).

8. The ejection mechanism according to claim 7, characterized in that: A horizontal sliding rod (18) is also fixed inside the first groove (8) and extends transversely through the first elastic member (13), the foot plate (14) and the second elastic member (15); A first hinge joint (19) and a second hinge joint (20) for connecting the foot plate (14) are fixed at intervals on the bottom of the arc-shaped support (17).

9. The ejection mechanism according to claim 7, characterized in that: The end of the arc-shaped support (17) is integrally mounted with a side baffle (21) for centering the pot body; Wherein, a plurality of the side baffles (21) are distributed in a circumferential array on the top of the lower pressure ring (5), and a top surface of the arc-shaped support (17) is provided with an engaging groove (22) connected to the skin (9).

10. The ejection mechanism according to claim 9, characterized in that: The skin (9) is integrally provided with a recessed portion (23) and an inclined ramp (24) adapted to the side baffle (21); The movable space formed by the recessed portion (23) and the inclined slope piece (24) is used for deformation of the telescopic member.

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