A knockout mechanism for a forging blank

Abstract

The utility model relates to the field of demoulding, concretely relates to a demoulding mechanism for forging blank, including demoulding frame, the main part of the demoulding mechanism for bearing forging blank, forging blank mould, fixedly installed in the inside of demoulding frame, for bearing forging blank, and the both sides fixed mounting of demoulding frame have vacuum air pump, the output fixed mounting of vacuum air pump has gas pipeline, the other end fixed mounting of gas pipeline has gas cavity. The utility model is provided with gas cavity, demoulding plate, air diffuser groove, bottom connecting rod, bottom pusher, middle push plate, center push rod, two -stage push plate and top demoulding plate, when using the demoulding mechanism for forging blank, the forging blank placed to the inside of forging blank mould is first input to the gas of forging blank mould by gas cavity and carries out loose mould first, these gases can diffuse to the bottom of forging blank through the air diffuser groove of demoulding plate.

Description

Technical Field

[0001] This utility model relates to the field of demolding, specifically to a demolding mechanism for forging blanks. Background Technology

[0002] Demolding is a core step in the forging process, referring to the process of completely removing the formed forging from the mold cavity using a mechanical device. The demolding mechanism of the forging blank is a mechanical system in the mold specifically designed to achieve the demolding function. Its design needs to be combined with the shape of the forging, material properties, and production requirements. It works by directly contacting the forging and using external force to push it out of the mold.

[0003] A search revealed a demolding mechanism for forging blanks, with publication number CN222268568U. This mechanism, relating to the field of forging processing technology, includes: a mold body; support frames fixedly connected to both sides of the mold body; a fixed plate fixedly connected to the lower part of the support frames; an venting groove at the bottom of the mold body; multiple heat sinks fixedly connected to the inner top wall of the venting groove; a receiving groove at the bottom of the venting groove; a shock-absorbing plate fixedly connected to the bottom of the receiving groove; a fan blade fixedly connected to the output end of a motor; a demolding device on the inner bottom wall of the mold body; a water tank inside the mold body; and a cooling device above the fixed plate. By incorporating the mold body and demolding device, the forged workpiece can be demolded, thereby improving production efficiency. The venting groove, fan blades, and cooling device facilitate cooling of the mold body after casting, preventing overheating and affecting its service life.

[0004] The existing demolding mechanism for forging blanks lacks the ability to release the mold with gas and eject it in stages during use. This leads to direct friction between the forging and the mold wall, resulting in scratches on the surface of the forging or wear of the mold cavity. Furthermore, the demolding mechanism for the forging blank in the comparative case mentioned above also lacks the ability to release the mold with gas and eject it in stages. Under long-term use, the concentrated ejection force at the bottom of the forging will cause the thin-walled area to collapse due to insufficient strength.

[0005] Therefore, it is necessary to invent a demolding mechanism for forging blanks to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a demolding mechanism for forging blanks. Through a gas delivery cavity, demolding plate, gas dispersing groove, bottom connecting rod, bottom pusher, middle pusher plate, center pusher, secondary pusher plate, and top demolding plate, the demolding mechanism for the forging blank possesses the ability to release the mold with gas and eject it in stages. This design reduces the coefficient of friction before demolding, avoiding hard contact that could cause scratches or deformation on the surface of the forging blank. Furthermore, the secondary ejection allows for precise localized force application, preventing excessive force in a single ejection that could lead to collapse in thin-walled areas or stress concentration in thick-walled areas. This design also ensures long-term durability. This invention adapts the demolding mechanism of the forging blank to complex forgings, thereby improving production efficiency. It addresses the problem that existing demolding mechanisms for forging blanks lack the ability to release the mold with gas and eject it in stages, leading to direct friction between the forging and the mold wall, resulting in scratches on the forging surface or wear on the mold cavity. Furthermore, the demolding mechanism of the forging blank in the comparative case also lacks the ability to release the mold with gas and eject it in stages. Under long-term use, this can cause the single ejection force to concentrate at the bottom of the forging, leading to collapse of thin-walled areas due to insufficient strength.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a demolding mechanism for forging blanks, comprising a demolding frame and a main body for supporting the forging blanks; A forging blank mold is fixedly installed inside the demolding frame to support the forging blank. Vacuum pumps are fixedly installed on both sides of the demolding frame. An air supply pipe is fixedly installed at the output end of the vacuum pump, and an air supply cavity is fixedly installed at the other end of the air supply pipe. The ejector plate is slidably connected inside the forging blank mold and is used to eject the forging blank. The surface of the ejector plate is provided with air venting grooves. A bottom connecting rod is fixedly installed at the bottom of the ejector plate, and a bottom pusher is fixedly installed at the bottom of the bottom connecting rod. Inner sliding grooves are provided on both sides of the outer side of the bottom pusher, and a trapezoidal inner pusher block is slidably connected inside the inner sliding groove. The middle push plate is slidably connected to the outside of the bottom connecting rod and is used to fix the inclined upper rods on both sides of the bottom. The middle push plate is slidably connected to the center push rod. The bottom of each of the demolding templates is fixedly installed with a telescopic rod, and the bottom of the telescopic rod is fixedly installed with a secondary push plate. The push rod is slidably connected inside the ejector plate and is used for secondary ejection. A telescopic buffer spring is sleeved on the outside of the push rod. An embedded groove is provided above the ejector plate, and a ejector plate is fixedly installed on the top of the push rod.

[0008] Preferably, the gas delivery cavity is fixedly connected to the forging blank mold, and the gas dispersing grooves are evenly distributed on the demolding mold.

[0009] Preferably, the trapezoidal inner push block is slidably connected to the inclined upper rod, and the trapezoidal inner push block is used in conjunction with the inner sliding groove.

[0010] Preferably, the top of the telescopic buffer spring is fixedly connected to the bottom of the ejector plate, and the bottom of the telescopic buffer spring is fixedly connected to the top of the secondary push plate.

[0011] Preferably, a first fixing block is fixedly installed on the outside of the forging blank mold, and a telescopic cylinder is fixedly installed on the bottom of the first fixing block.

[0012] Preferably, a second fixing block is fixedly installed at the bottom end of the telescopic cylinder, and the exterior of the second fixing block is fixedly connected to the exterior of the bottom push base.

[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows: This utility model is equipped with a gas supply cavity, a demolding plate, a gas dispersion groove, a bottom connecting rod, a bottom pusher, a middle push plate, a central push rod, a secondary push plate, and a top demolding plate. When using this demolding mechanism for forging blanks, the forging blank placed inside the forging blank mold is first loosened by the gas supplied to the mold through the gas supply cavity. This gas can diffuse to the bottom of the forging blank through the gas dispersion groove of the demolding plate. Then, as the bottom pusher rises through the bottom connecting rod, the demolding plate is pushed out a certain distance. Next, the trapezoidal inner push block, limited by the inclined upper rod, is pushed into the inner groove. Subsequently, the trapezoidal inner push block pushes the central push rod upward and backward. The internal sliding of the push plate also compresses the secondary push plate, allowing the secondary push plate to push out the ejector plate through the push rod. This also allows the ejector plate to push out the forging blank on the ejector plate a second time, thus completing the demolding. This gives the demolding mechanism of the forging blank the ability to release the mold with gas and eject in stages. This design can reduce the coefficient of friction before demolding, avoid hard contact that could cause scratches or deformation on the surface of the forging blank. Moreover, the secondary ejection allows for precise local force application, avoiding excessive force in a single ejection that could cause collapse in thin-walled areas or stress concentration in thick-walled areas. With long-term use, this design can also make the demolding mechanism of the forging blank adaptable to complex forgings, and improve production efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the template removal structure of this utility model; Figure 3 This is a schematic diagram of the bottom pusher structure of this utility model; Figure 4 This is a schematic diagram of the push plate structure of this utility model; Figure 5 This is a schematic diagram of the telescopic buffer spring structure of this utility model; Figure 6 This is a schematic diagram of the telescopic cylinder structure of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Demolding frame; 2. Forging blank mold; 3. Vacuum pump; 4. Air supply pipeline; 5. Air supply cavity; 6. Demolding plate; 7. Air dissipation groove; 8. Bottom connecting rod; 9. Bottom push seat; 10. Inner slide groove; 11. Trapezoidal inner push block; 12. Middle push plate; 13. Slanted upper rod; 14. Center push rod; 15. Telescopic rod; 16. Secondary push plate; 17. Top push rod; 18. Telescopic buffer spring; 19. Embedded groove; 20. Top demolding plate; 21. First fixing block; 22. Telescopic cylinder; 23. Second fixing block. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] This utility model provides, for example Figure 1-6 The demolding mechanism shown includes a demolding frame 1 and a main body for supporting the demolding mechanism for the forging blank. The forging blank mold 2 is fixedly installed inside the demolding frame 1 to support the forging blank. Vacuum pumps 3 are fixedly installed on both sides of the outside of the demolding frame 1. A gas supply pipe 4 is fixedly installed at the output end of the vacuum pump 3, and a gas supply cavity 5 is fixedly installed at the other end of the gas supply pipe 4. The ejector plate 6 is slidably connected to the inside of the forging blank mold 2 and is used to eject the forging blank. The surface of the ejector plate 6 is provided with air venting grooves 7. The bottom of the ejector plate 6 is fixedly installed with a bottom connecting rod 8. The bottom of the bottom connecting rod 8 is fixedly installed with a bottom push seat 9. The outer sides of the bottom push seat 9 are provided with inner sliding grooves 10. The inner sliding grooves 10 are slidably connected with trapezoidal inner push blocks 11 inside. The middle push plate 12 is slidably connected to the outside of the bottom connecting rod 8 and is used to fix the inclined upper rod 13 on both sides of the bottom. The middle push plate 12 is slidably connected to the center push rod 14. The bottom of the demolding template 6 is fixedly installed with telescopic rods 15, and the bottom of the telescopic rods 15 is fixedly installed with secondary push plates 16. The push rod 17 is slidably connected inside the demolding plate 6 for secondary ejection. A telescopic buffer spring 18 is sleeved on the outside of the push rod 17. An embedded groove 19 is provided above the demolding plate 6. A top ejection plate 20 is fixedly installed on the top of the push rod 17. As the bottom push seat 9 drives the demolding plate 6 to rise through the bottom connecting rod 8, the forging blank is ejected a certain distance. Then, the trapezoidal inner push block 11 is pushed into the inner slide groove 10 under the limit of the inclined upper rod 13. Subsequently, the trapezoidal inner push block 11 pushes the center push rod 14 upward and backward. The center push rod 14 slides inside the middle push plate 12, and also pushes the secondary push plate 16, so that the secondary push plate 16 pushes out the top ejection plate 20 through the push rod 17. In this way, the top ejection plate 20 also ejects the forging blank on the demolding plate 6 for a second time, thereby completing the demolding.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the gas supply chamber 5 is fixedly connected to the forging blank mold 2, and the gas dispersing grooves 7 are evenly distributed on the demolding platen 6. The forging blank placed inside the forging blank mold 2 is first loosened by the gas supplied to the forging blank mold 2 by the gas supply chamber 5. The trapezoidal inner push block 11 is slidably connected to the inclined upper rod 13. The trapezoidal inner push block 11 is used in conjunction with the inner sliding groove 10. As the bottom push seat 9 drives the demolding platen 6 to rise through the bottom connecting rod 8, the forging blank is pushed out a certain distance. Then, under the limit of the inclined upper rod 13, the trapezoidal inner push block 11 is pushed into the inner sliding groove 10. Subsequently, the trapezoidal inner push block 11 pushes the center push rod 14 upward and backward.

[0020] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the top of the telescopic buffer spring 18 is fixedly connected to the bottom of the demolding mold 6, and the bottom of the telescopic buffer spring 18 is fixedly connected to the top of the secondary push plate 16. When the secondary push plate 16 presses upward to push the push rod 17, it also presses the telescopic buffer spring 18 simultaneously, thereby causing the push rod 17 to rise. When not pushing, the telescopic buffer spring 18 extends, thereby causing the push rod 17 to return to its original position. The forging blank mold 2 is fixedly equipped with a first fixing block 21 on its exterior. The bottom of the first fixing block 21 is fixedly equipped with a telescopic cylinder 22. The telescopic cylinder 22 is used to provide power to drive the bottom push seat 9 to push upward and return to its original position, thereby completing the demolding work. The bottom end of the telescopic cylinder 22 is fixedly equipped with a second fixing block 23. The exterior of the second fixing block 23 is fixedly connected to the exterior of the bottom push seat 9. The overall structure of the telescopic cylinder 22 and the bottom push seat 9 is simple and easy to operate. If a fault occurs, it is convenient for maintenance personnel to perform timely maintenance.

[0021] The working principle of this utility model is as follows: First, connect the external power supply. If the forging blank inside the forging blank mold 2 needs to be demolded, turn on the switch of the vacuum pump 3. The vacuum pump 3 will draw external gas and input it into the gas supply chamber 5 through the gas supply pipe 4. The forging blank placed inside the forging blank mold 2 will be loosened by the gas input into the forging blank mold 2 through the gas supply chamber 5. This gas can diffuse to the bottom of the forging blank through the gas dispersion groove 7 of the demolding plate 6. Then, open the telescopic cylinder 22. The extension and retraction of the telescopic cylinder 22 pulls the bottom pusher 9 upward. As the bottom pusher 9 rises via the bottom connecting rod 8, it pushes the forging blank out a certain distance. Then, as the bottom pusher 9 rises, the trapezoidal inner pusher block 11 slides synchronously under the limit of the inclined rod 13, advancing into the inner slide groove 10. Subsequently, the trapezoidal inner pusher block 11 pushes the center pusher 14 upward and backward, causing the center pusher 14 to slide upward inside the middle pusher plate 12. Then, the center pusher 14 pushes the bottom of the secondary pusher plate 16. The secondary push plate 16 pushes out the ejector plate 20 via the push rod 17, which in turn allows the ejector plate 20 to eject the forging blank on the ejector plate 6 a second time, thus completing the demolding. This gives the demolding mechanism of the forging blank the ability of gas release and staged ejection. This design can reduce the coefficient of friction before demolding, avoid hard contact that could cause scratches or deformation on the surface of the forging blank, and the secondary ejection allows for precise local force application, avoiding excessive force in a single ejection that could cause collapse in thin-walled areas or stress concentration in thick-walled areas. After the forging blank is removed, the telescopic cylinder 22 drives the bottom pusher 9 to reset, and the compressed telescopic buffer spring 18 on the secondary push plate 16 extends, thereby resetting the top push rod 17. In this way, the forging blank to be processed can be put back in. Finally, after completing the installation and use of the demolding mechanism for all forging blanks according to the above operations, turn off the switch of the vacuum pump 3 and the switch of the telescopic cylinder 22. If it is not used for a long time, simply cut off the external power supply. In this way, the use of the demolding mechanism for forging blanks is completed.

[0022] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A demolding mechanism for forging blanks, characterized in that: include Demolding frame (1), the main body of the demolding mechanism used to support the forging blank; The forging blank mold (2) is fixedly installed inside the demolding frame (1) to support the forging blank. Vacuum pumps (3) are fixedly installed on both sides of the demolding frame (1). A gas delivery pipe (4) is fixedly installed at the output end of the vacuum pump (3). A gas delivery cavity (5) is fixedly installed at the other end of the gas delivery pipe (4). The ejector plate (6) is slidably connected to the inside of the forging blank mold (2) and is used to eject the forging blank. The surface of the ejector plate (6) is provided with air venting grooves (7). The bottom of the ejector plate (6) is fixedly installed with a bottom connecting rod (8). The bottom of the bottom connecting rod (8) is fixedly installed with a bottom push seat (9). The two outer sides of the bottom push seat (9) are provided with inner sliding grooves (10). The inner sliding grooves (10) are slidably connected with trapezoidal inner push blocks (11). The middle push plate (12) is slidably connected to the outside of the bottom connecting rod (8) and is used to fix the inclined upper rod (13) on both sides of the bottom. The middle push plate (12) is slidably connected to the center push rod (14). The bottom of the demolding template (6) is fixedly installed with a telescopic rod (15), and the bottom of the telescopic rod (15) is fixedly installed with a secondary push plate (16). The push rod (17) is slidably connected inside the demolding template (6) for secondary ejection. The push rod (17) is fitted with a telescopic buffer spring (18). An embedded groove (19) is provided above the demolding template (6). A demolding plate (20) is fixedly installed on the top of the push rod (17).

2. The demolding mechanism for forging blanks according to claim 1, characterized in that: The gas delivery cavity (5) is fixedly connected to the forging blank mold (2), and the gas dispersing grooves (7) are evenly distributed on the demolding mold (6).

3. The demolding mechanism for forging blanks according to claim 1, characterized in that: The trapezoidal inner push block (11) is slidably connected to the inclined upper rod (13), and the trapezoidal inner push block (11) is used in conjunction with the inner sliding groove (10).

4. A demolding mechanism for forging blanks according to claim 1, characterized in that: The top of the telescopic buffer spring (18) is fixedly connected to the bottom of the ejector plate (6), and the bottom of the telescopic buffer spring (18) is fixedly connected to the top of the secondary push plate (16).

5. A demolding mechanism for forging blanks according to claim 1, characterized in that: The forging blank mold (2) is fixedly installed with a first fixing block (21) on the outside, and a telescopic cylinder (22) is fixedly installed at the bottom of the first fixing block (21).

6. A demolding mechanism for forging blanks according to claim 5, characterized in that: The bottom end of the telescopic cylinder (22) is fixedly installed with a second fixing block (23), and the outside of the second fixing block (23) is fixedly connected to the outside of the bottom push base (9).

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