Bending mold capable of automatically demolding product

Abstract

The invention relates to the technical field of bending molds, in particular to a bending mold capable of automatically demolding a product, which comprises a cast iron frame, a bending assembly and an overturning assembly, the bending assembly is rotatably arranged in the cast iron frame, and the overturning assembly is fixedly arranged on the side surface of the cast iron frame. In the process that the hydraulic machine drives the pressing head to reset upwards, the overturning assembly drives the whole bending assembly and the bent and formed metal sheet to rotate by 180 degrees, when the output rod of the hydraulic machine drives the pressing head to move downwards again to bend a new metal sheet, after the metal sheet is bent and embedded into the positioning groove, the bottom of the metal sheet exerts pressure on the top of one top block at the upper end, and the metal sheet is bent. And the ejector rod slides downwards to drive an ejector block at the bottom to move downwards, so that the bent metal sheet which is turned downwards in the previous step is extruded from the interior of a positioning groove in the lower end, falls on the top of the diversion trench tile and naturally slides downwards along the inclined surface of the diversion trench tile, and therefore, automatic demolding of the bent metal sheet is realized.

Description

Technical Field

[0001] This invention relates to the field of bending die technology, specifically a bending die that can automatically demold products. Background Technology

[0002] Bending dies are tools used by bending machines to shape and process sheet metal. These tools are composed of various parts, and different dies are composed of different parts. They mainly achieve the processing of the shape of the object by changing the physical state of the material being formed. They are used to make the blank into a part with a specific shape and size under the pressure of the bending machine.

[0003] According to a Chinese patent application with publication number 202111496175.2, an outward bending die for strip-shaped parts is disclosed. This die utilizes the interaction of horizontal and vertical compression springs to provide significant elastic potential energy, preventing material jamming during discharge. The horizontal compression springs pull to both sides, while the vertical compression springs push upwards, requiring low elasticity from each spring. However, this bending die cannot be used to bend the next part before the previous bent product has been completely demolded, resulting in inefficient bending. Furthermore, some bent parts may become stuck inside the die after forming, hindering demolding. Therefore, we propose a bending die with automatic product demolding capability to solve these technical problems. Summary of the Invention

[0004] This invention provides the following technical solution: a bending die capable of automatically demolding products, comprising:

[0005] Cast iron frame;

[0006] A bending assembly, rotatably mounted inside a cast iron frame, is used for bending metal.

[0007] The flipping component is fixedly mounted on the side of the cast iron frame and is used for flipping the bending component.

[0008] As a preferred embodiment of the present invention, the bending assembly includes:

[0009] The bending and forming mold is located inside the cast iron frame;

[0010] Bending grooves are formed at the top and bottom of the bending forming mold;

[0011] Positioning grooves are formed on the surfaces of the two bending grooves;

[0012] The support shaft is fixedly installed at both ends of the bending and forming mold, and is rotatably mounted to the cast iron frame via bearings.

[0013] As a preferred embodiment of the present invention, the bending assembly further includes:

[0014] The sliding cavity is formed through the inside of the bending forming mold and extends through two positioning grooves;

[0015] The guide ring is slidably mounted on the inner wall of the sliding cavity;

[0016] The push rod is fixedly installed on the inner wall of the guide ring;

[0017] Guide holes are made at both ends of the push rod;

[0018] The top blocks are slidably installed inside the guide holes.

[0019] As a preferred embodiment of the present invention, the bending assembly further includes:

[0020] Spring 1, two of them are sleeved on the outside of the top rod, and the two springs 1 are fixedly installed on the opposite side of the top block;

[0021] Spring 2 is located inside the guide hole and is fixedly installed between the inner end face of the guide hole and the end of the top block;

[0022] The settling groove is formed on the surface of the two positioning grooves and is located on the periphery of the opening of the sliding cavity;

[0023] End caps are fixedly installed inside two end caps. The push rod moves through the inside of the end cap. One end of the spring away from the guide ring is fixedly connected to the surface of the end cap.

[0024] As a preferred embodiment of the present invention, the flipping component includes:

[0025] A flip-up housing is fixedly mounted on the upper side of a cast iron frame, with one of the support shafts extending movably into the interior of the flip-up housing;

[0026] A locking groove is formed in the lower part of the inner wall of the flip-out housing;

[0027] A rectangular groove is formed through the outer wall of a support shaft near the flip-out housing;

[0028] A locking bar is slidably installed inside a rectangular groove, with the bottom of the locking bar engaging with the inside of the locking groove.

[0029] The hollow shaft is fixedly installed in the middle of the inner surface of the flip-out housing near the cast iron frame, and is located outside the support shaft;

[0030] The push bar is rotatably mounted on the outer wall of the hollow shaft.

[0031] A one-way ratchet disc is fixedly installed on the outer wall of the push bar;

[0032] The groove is formed diagonally at the center of the pull bar on its outer surfaces at both ends;

[0033] Pins are fixedly installed on both ends of the locking bar near the push bar, and the pin positions correspond to the groove positions.

[0034] As a preferred embodiment of the present invention, the flipping component further includes:

[0035] The slide bar is fixedly installed on both ends of the lock bar on the side away from the pin;

[0036] An arc-shaped guide rail is fixedly installed on the inner surface of the flip-up housing on the side away from the cast iron frame, and the arc-shaped guide rail is concentric with the flip-up housing.

[0037] As a preferred embodiment of the present invention, guide angles are provided at both ends of the top of the locking groove.

[0038] As a preferred embodiment of the present invention, the flipping component further includes:

[0039] The rack is fixedly connected to the bottom pressure block of the top hydraulic output rod of the bending assembly via a fixing plate;

[0040] The teeth are located on the outer wall of the one-way ratchet disc and mesh with the rack.

[0041] As a preferred embodiment of the present invention, two clearance grooves are formed on the outer wall of the flip shell, the two clearance grooves are symmetrically distributed about the center of the flip shell, and the rack slides inside the clearance grooves.

[0042] As a preferred embodiment of the present invention, a flow guide tile is fixedly installed inside the cast iron frame, and the flow guide tile is inclined at a certain degree.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] 1. In this invention, during the process of the hydraulic press driving the pressure head to reset upward, the flipping component drives the bending component as a whole and the bent metal sheet to rotate, causing the formed metal sheet to face downward. When the hydraulic press output rod drives the pressure head to move downward again to bend a new metal sheet, after the bent metal sheet is embedded in the positioning groove, its bottom applies pressure to the top of a top block at the upper end. Under the elastic force of the guide hole, the top rod and guide ring slide downward along the inner wall of the slide cavity, causing the spring to store elastic force. The downward sliding of the top rod drives a top block at the bottom to move downward, squeezing the bent metal sheet that was flipped downward in the previous step out of the positioning groove at the lower end, falling on the top of the guide channel tile, and sliding naturally downward along the slope of the guide channel tile. In this way, the automatic demolding of the bent metal sheet is achieved.

[0045] 2. In this invention, when the bottom-formed metal sheet is too tightly stuck inside the positioning groove, the bottom of the upper-bent metal sheet applies pressure to the top of the upper block, and the top block slides inside the guide hole, compressing the second spring. The excess extrusion force on the bottom metal sheet that needs to be demolded is released by the elastic force of the second spring, so as to prevent it from deforming and becoming scrap, thereby improving the processing yield.

[0046] 3. In this invention, when the locking bar in the flipping assembly rotates 180 degrees, the slide bar slides along the outer edge of the arc-shaped guide rail to its top and then separates from the arc-shaped guide rail. Under the action of gravity, the locking bar slides down along the rectangular groove, causing its other end to be locked into the locking groove. Therefore, the bending assembly as a whole is positioned and cannot rotate, ensuring the stability and accuracy of the bending process. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the present invention;

[0048] Figure 2 This is a schematic diagram of the bending component and the flipping component in this invention;

[0049] Figure 3 This is a side sectional view of the bending forming mold in this invention;

[0050] Figure 4 In this invention Figure 3 A magnified structural diagram of part A;

[0051] Figure 5 This is a schematic diagram of the internal structure of the flip-out outer shell in this invention;

[0052] Figure 6 This is a side sectional view of the flip-out outer shell in this invention;

[0053] Figure 7 In this invention Figure 5 A schematic diagram of the enlarged structure of part B;

[0054] Figure 8 In this invention Figure 6 A magnified structural diagram of section C;

[0055] Figure 9 This is a schematic diagram of the groove and pin structure in this invention.

[0056] In the diagram: 100, cast iron frame; 200, bending assembly; 201, bending forming die; 202, bending groove; 203, positioning groove; 204, support shaft; 205, sliding cavity; 206, guide ring; 207, push rod; 208, guide hole; 209, top block; 2010, spring one; 2011, spring two; 2012, countersink; 2013, end cap; 300, flipping assembly. 301. Flip-over housing; 3001. Clearance groove; 302. Locking groove; 303. Rectangular groove; 304. Locking bar; 305. Hollow shaft; 306. Push bar; 307. One-way ratchet disc; 308. Groove; 309. Pin; 3010. Slide bar; 3011. Arc-shaped guide rail; 3013. Guide angle; 3014. Rack; 3015. Tooth; 400. Flow guide groove tile. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] Please see Figures 1-9 The technical solution provided by the present invention specifically includes the following embodiments:

[0059] A bending die for automatic product demolding includes a cast iron frame 100, a bending component 200, and a flipping component 300. The bending component 200 is rotatably disposed inside the cast iron frame 100 for bending metal. The flipping component 300 is fixedly disposed on the side of the cast iron frame 100 for flipping the bending component 200. A flow guide tile 400 is fixedly installed inside the cast iron frame 100, and the flow guide tile 400 is inclined at 45 degrees.

[0060] For further details, please refer to [link / reference]. Figure 2 , Figure 3 As shown:

[0061] The bending assembly 200 includes a bending forming mold 201, a bending groove 202, a positioning groove 203, and a support shaft 204. The bending forming mold 201 is located inside the cast iron frame 100. The bending groove 202 is formed at the top and bottom of the bending forming mold 201. The positioning groove 203 is formed on the surface of the two bending grooves 202. The support shaft 204 is fixedly installed at both ends of the bending forming mold 201 and is rotatably mounted to the cast iron frame 100 through bearings.

[0062] Specifically, the metal sheet is placed on top of the bending forming mold 201 and aligned with the positioning groove 203. The hydraulic press output rod drives the pressure head to move downward, pressing the metal sheet into the positioning groove 203 to bend it. Then, the hydraulic press output rod drives the pressure head to reset. At this time, the bent metal sheet is easy to get stuck inside the positioning groove 203, so it needs to be demolded.

[0063] For further details, please refer to [link / reference]. Figure 4 As shown:

[0064] The bending assembly 200 also includes a sliding cavity 205, a guide ring 206, a push rod 207, a guide hole 208, a push block 209, a first spring 2010, a second spring 2011, a recess 2012, and an end cap 2013. The sliding cavity 205 is formed through the inside of the bending forming mold 201 and extends through two positioning grooves 203. The guide ring 206 is slidably mounted on the inner wall of the sliding cavity 205. The push rod 207 is fixedly mounted on the inner wall of the guide ring 206. The guide holes 208 are formed at both ends of the push rod 207. The push blocks 209 are slidably mounted inside the guide holes 208 respectively. The first spring 2010 is sleeved on the end cap 2013. There are two push rods 207 on the periphery. Two springs 2010 are fixedly installed on the side of the top block 209 that are far apart. Spring 2011 is located inside the guide hole 208 and is fixedly installed between the inner end face of the guide hole 208 and the end of the top block 209. The recess 2012 is opened on the surface of the two positioning grooves 203 and is located outside the opening of the sliding cavity 205. The end cap 2013 is fixedly installed inside the two end caps 2013. The push rod 207 moves through the inside of the end cap 2013. The end of spring 2010 that is far away from the guide ring 206 is fixedly connected to the surface of the end cap 2013.

[0065] Specifically, during the demolding of the formed metal sheet, when the hydraulic press drives the pressure head to return to its original position, the flipping component 300 rotates the entire bending component 200 and the bent metal sheet by 180 degrees, causing the formed metal sheet to face downwards. Then, a new metal sheet is placed on top of the bending mold 201 and aligned with the positioning groove 203. The hydraulic press output rod drives the pressure head downwards, applying pressure to bend the metal sheet. After the bent metal sheet is embedded in the positioning groove 203, its bottom applies pressure to the top of a top block 209 at the top. Furthermore, under the elastic force of the second spring 2011, the push rod 207 and guide ring 206 slide downwards along the inner wall of the slide cavity 205, causing the first spring 2010 to store elastic force. The downward sliding of the push rod 207 then drives the bottom top block 209 to... The bending metal sheet, which was flipped downwards in the previous step, is extruded from the lower positioning groove 203 and falls onto the top of the guide channel tile 400. It then slides naturally downwards along the slope of the guide channel tile 400, thus achieving automatic demolding of the bent metal sheet. Since the bending forming mold 201 rotates 180 degrees after each bend, demolding and feeding do not interfere with each other, thereby improving bending efficiency. It should be noted that when the bottom formed metal sheet is stuck too tightly inside the positioning groove 203, the bottom of the upper bent metal sheet applies pressure to the top of the upper top block 209. The top block 209 slides inside the guide hole 208, compressing the second spring 2011. The elastic force of the second spring 2011 releases the excess extrusion force on the bottom metal sheet that needs to be demolded, preventing deformation and scrapping, thereby improving the processing yield.

[0066] For further details, please refer to [link / reference]. Figures 5-9 As shown:

[0067] The flipping assembly 300 includes a flipping housing 301, a clearance groove 3001, a locking groove 302, a rectangular groove 303, a locking bar 304, a hollow shaft 305, a push bar 306, a one-way ratchet disc 307, a groove 308, a pin 309, a slide bar 3010, an arc-shaped guide rail 3011, a guide angle 3013, a rack 3014, and teeth 3015. The flipping housing 301 is fixedly installed on the upper side of the cast iron frame 100, and one of the support shafts 204 extends movably into the interior of the flipping housing 301. A locking groove 302 is formed in the lower part of the inner wall of the flip-out housing 301. Guide angles 3013 are formed at both ends of the top of the locking groove 302. A rectangular groove 303 is formed through the outer wall of a support shaft 204 near the flip-out housing 301. A locking bar 304 is slidably installed inside the rectangular groove 303. The bottom of the locking bar 304 is engaged with the inside of the locking groove 302. A hollow shaft 305 is fixedly installed in the middle of the inner surface of the flip-out housing 301 near the cast iron frame 100 and is located outside the support shaft 204. The push bar 306 rotates. The movable part is mounted on the outer wall of the hollow shaft 305. The one-way ratchet disc 307 is fixedly mounted on the outer wall of the push bar 306. The groove 308 is formed diagonally about the center of the push bar 306 on its two outer surfaces. The pin 309 is fixedly mounted on both ends of the locking bar 304 near the push bar 306, and the position of the pin 309 corresponds to the position of the groove 308. The slide bar 3010 is fixedly mounted on both ends of the locking bar 304 away from the pin 309. The arc-shaped guide rail 3011 is fixedly mounted on the flip-out housing 301 away from the cast iron. On one inner surface of the frame 100, the arc-shaped guide rail 3011 is concentric with the flip shell 301. The rack 3014 is fixedly connected to the bottom pressure block of the top hydraulic output rod of the bending assembly 200 through a fixing plate. The teeth 3015 are opened on the outer wall of the one-way ratchet disc 307 and mesh with the rack 3014. Two clearance grooves 3001 are opened on the outer wall of the flip shell 301. The two clearance grooves 3001 are symmetrically distributed about the center of the flip shell 301. The rack 3014 slides inside the clearance grooves 3001.

[0068] Specifically, the hydraulic press output rod moves upward, causing the pressure head to reset. Simultaneously, the pressure head moves the rack 3014 upward. The meshing of the rack 3014 and teeth 3015 causes the ratchet disc 307 to rotate. It's important to note that for every upward movement of the rack 3014, the teeth 3015 rotate half a turn. Because of the one-way torque transmission between the ratchet disc 307 and the push bar 306, the upward movement of the rack 3014 causes the push bar 306 to rotate. The rotation of the push bar 306... The moving groove 308 rotates together. Initially, because the bottom of the locking bar 304 is inserted into the locking groove 302, the locking bar 304 does not rotate with the push bar 306. Under the abutment between the groove 308 and the pin 309, the locking bar 304 is pushed upwards along the inner wall of the rectangular groove 303, causing the bottom of the locking bar 304 to exit from the locking groove 302. Then, under the mutual abutment between the groove 308 and the pin 309, the push bar 306 drives the locking bar 304 to rotate and slide... The outer wall of rod 3010 contacts the outer edge of arc-shaped guide rail 3011 and slides along the outer edge of arc-shaped guide rail 3011. The rotation of locking bar 304 causes the bending assembly 200 to rotate 180 degrees via rectangular groove 303. At this time, the bent metal part is rotated downwards. After rotating 180 degrees, the sliding rod 3010 slides along the outer edge of arc-shaped guide rail 3011 to its top, and then separates from arc-shaped guide rail 3011. Locking bar 304 then slides downwards along rectangular groove 303 under gravity, causing its other end to... The bending assembly 200 is locked inside the locking groove 302, thus the entire bending assembly 200 is positioned and cannot rotate, ensuring the stability and accuracy of the bending process. During this process, the rack 3014 drives the rack 3014 and the one-way ratchet disc 307 to rotate downwards. At this time, the torque transmission between the one-way ratchet disc 307 and the push bar 306 is interrupted, that is, the push bar 306 will not rotate (the one-way ratchet disc 307 has a ratchet and thorn inside to achieve one-way torque transmission. For the specific structure, please refer to the existing technology, which will not be described in detail here).

[0069] This solution provides an automatic product demolding bending die. During operation, a metal sheet is placed on top of the bending die 201 and aligned with the positioning groove 203. The hydraulic press output rod then drives the pressure head downwards, pressing the metal sheet into the positioning groove 203 to bend it. Subsequently, the hydraulic press output rod moves the pressure head upwards to reset it. Simultaneously, the pressure head drives the rack 3014 upwards. The meshing of the rack 3014 and the teeth 3015 rotates the one-way ratchet disc 307. It is important to note that the teeth... As rack 3014 moves upward once, tooth 3015 rotates exactly half a turn. Due to the one-way torque transmission between the one-way ratchet disc 307 and the push bar 306, the push bar 306 rotates as rack 3014 moves upward. The rotation of push bar 306 causes groove 308 to rotate as well. Initially, because the bottom of locking bar 304 is inserted into locking groove 302, locking bar 304 does not rotate with push bar 306. Furthermore, under the resistance between groove 308 and pin 309, locking bar 304 is moved along a rectangular path. The inner wall of the rectangular groove 303 is pushed upward, causing the bottom of the locking bar 304 to exit from the locking groove 302. Then, under the mutual resistance between the groove 308 and the pin 309, the push bar 306 drives the locking bar 304 to rotate, and the outer wall of the slide bar 3010 contacts the outer edge of the arc-shaped guide rail 3011 and slides along the outer edge of the arc-shaped guide rail 3011. The rotation of the locking bar 304 drives the bending assembly 200 to rotate 180 degrees through the rectangular groove 303. At this time, the bent metal part is rotated downward, and after rotating 180 degrees, the slide bar 304 rotates downward. The lever 3010 slides along the outer edge of the arc-shaped guide rail 3011 to its top, and then separates from the arc-shaped guide rail 3011. The locking bar 304 then slides down along the rectangular groove 303 under the action of gravity, so that its other end is stuck in the locking groove 302. Therefore, the bending assembly 200 is positioned as a whole and cannot rotate. During this period, the rack 3014 drives the rack 3014 and the one-way ratchet disc 307 to rotate downward. At this time, the torque transmission between the one-way ratchet disc 307 and the push bar 306 is interrupted, that is to say, the push bar 306 will not rotate.

[0070] Next, a new metal sheet is placed on top of the bending die 201 and aligned with the positioning groove 203. The hydraulic press output rod drives the pressure head downward to bend the metal sheet. After the bent metal sheet is embedded in the positioning groove 203, its bottom presses against the top of a top block 209 at the top. Under the elastic force of the second spring 2011, the push rod 207 and the guide ring 206 slide downward along the inner wall of the slide cavity 205, causing the first spring 2010 to store elastic force. The downward sliding of the push rod 207 causes the bottom top block 209 to move downward, squeezing the bent metal sheet, which was flipped downward in the previous step, out of the positioning groove 203 at the bottom and onto the guide channel tile 40. The metal sheet is automatically demolded by sliding naturally downwards along the inclined surface of the guide channel tile 400. Since the bending forming mold 201 rotates 180 degrees after each bend, demolding and feeding do not interfere with each other, thereby improving bending efficiency. It should be noted that when the bottom formed metal sheet is stuck too tightly in the positioning groove 203, the bottom of the upper bent metal sheet applies pressure to the top of the upper top block 209. The top block 209 slides inside the guide hole 208, compressing the second spring 2011. The elastic force of the second spring 2011 releases the excess extrusion force on the bottom metal sheet that needs to be demolded, so as to prevent it from deforming and becoming scrapped, thereby improving the processing yield.

[0071] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A bending die capable of automatic product demolding, characterized by: Include: Cast iron frame (100); Bending assembly (200), rotatingly arranged inside the cast iron frame (100), for metal bending; Turnover assembly (300), fixedly arranged on the side of the cast iron frame (100), for turnover of the bending assembly (200).

2. The bending die capable of automatically demolding products according to claim 1, characterized in that: The bending assembly (200) comprises: Bending forming die (201) located inside the cast iron frame (100); Bending grooves (202) opened on the top and bottom of the bending forming die (201); Positioning grooves (203) opened on the surfaces of the two bending grooves (202); Support shafts (204) fixedly installed at both ends of the bending forming die (201) and rotatably installed with the cast iron frame (100) through bearings.

3. The bending die capable of automatically demolding products according to claim 2, characterized in that: The bending assembly (200) further comprises: Slide cavities (205) opened through the inside of the bending forming die (201) and through the two positioning grooves (203); Guide rings (206) slidingly installed on the inner walls of the slide cavities (205); Top rods (207) fixedly installed on the inner walls of the guide rings (206); Guide holes (208) opened at both ends of the top rods (207); Top blocks (209) slidingly installed in the guide holes (208), respectively.

4. The bending die capable of automatically demolding products according to claim 3, characterized in that: The bending assembly (200) further comprises: Spring one (2010) sleeved on the periphery of the top rod (207), and the number of the spring one (2010) is two, and the two spring one (2010) are fixedly installed on the side surface away from the top block (209); Spring two (2011) located inside the guide hole (208) and fixedly installed between the inner end surface of the guide hole (208) and the end portion of the top block (209); Sunk grooves (2012) opened on the surfaces of the two positioning grooves (203) and located on the periphery of the opening of the slide cavity (205); End covers (2013) fixedly installed inside the two end covers (2013), the top rod (207) movably penetrates the inside of the end cover (2013), and the end away from the guide ring (206) of the spring one (2010) is fixedly connected with the surface of the end cover (2013).

5. The bending die capable of automatically demolding products according to claim 4, characterized in that: The turnover assembly (300) comprises: Turnover shell (301) fixedly installed on the upper portion of the side of the cast iron frame (100), and one of the support shafts (204) movably extends into the inside of the turnover shell (301); Locking grooves (302) opened on the lower inner wall of the turnover shell (301); Rectangular grooves (303) opened through on the outer wall of the support shaft (204) close to the turnover shell (301); Lock bars (304) slidingly installed in the rectangular grooves (303), and the bottom of the lock bar (304) is clamped with the inside of the locking groove (302). Hollow shaft rod (305), fixedly installed in the inner surface of the side of the turnover shell (301) near the cast iron frame (100) in the middle, and located in the periphery of the load bearing shaft (204); Pushing strip (306), rotatably installed on the outer wall of the hollow shaft rod (305); One-way ratchet disc (307), fixedly installed on the outer wall of the pushing strip (306); Groove (308), about the center diagonal of the pushing strip (306) is opened on the outer side of both ends; Pin (309), fixedly installed on the side of the lock strip (304) near the pushing strip (306) at both ends, the position of the pin (309) corresponds to the position of the groove (308).

6. The bending die capable of automatically demolding products according to claim 5, characterized in that: The turnover assembly (300) further comprises: Slide rod (3010), fixedly installed on the side of the lock strip (304) away from the pin (309) at both ends; Arc-shaped guide rail (3011), fixedly installed on the inner surface of the side of the turnover shell (301) away from the cast iron frame (100), the arc-shaped guide rail (3011) is concentric with the turnover shell (301).

7. The bending die capable of automatically demolding products according to claim 6, characterized in that: The top of the locking groove (302) is provided with a guide angle (3013) at both ends.

8. The bending die capable of automatically demolding products according to claim 7, characterized in that: The turnover assembly (300) further comprises: Rack (3014), fixedly connected with the hydraulic output rod bottom block of the bending assembly (200) through the fixed plate; Tooth (3015), opened on the outer wall of the one-way ratchet disc (307), and engaged with the rack (3014).

9. The bending die capable of automatically demolding products according to claim 8, characterized in that: Two make-way grooves (3001) are opened on the outer wall of the turnover shell (301), the two make-way grooves (3001) are symmetrically distributed about the center of the turnover shell (301), and the rack (3014) is slidably located inside the make-way groove (3001).

10. The bending die capable of automatically demolding products according to claim 9, characterized in that: The cast iron frame (100) is fixedly installed with a flow guide groove tile (400) inside, and the flow guide groove tile (400) is arranged at an angle of (45) degrees.

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