Die forging device capable of producing two dies at one time

Abstract

The invention provides a one-to-two die forging device which comprises a base main body, a die assembly arranged at the top of the base main body, at least four hydraulic columns arranged between the base main body and the die assembly, and a forging die auxiliary part arranged in the axial direction of the die assembly and at least partially embedded in the die assembly. The demolding auxiliary part comprises at least two first demolding frames movably embedded in the lower mold and at least two second demolding frames movably embedded in the upper mold, the same sides of the first demolding frames and the second demolding frames oppositely extend to form demolding parts, and the sides, away from the demolding parts, of the first demolding frames and the second demolding frames oppositely extend to form elastic buckle parts; the demolding part is embedded in the dual-mold groove, the elastic buckling part is embedded in the edge of the upper mold and the edge of the lower mold far away from the dual-mold groove, and when the upper mold moves close to or far away from the lower mold, the elastic buckling part is buckled and pulls the first demolding frame and the second demolding frame which are oppositely arranged out of the upper mold and the lower mold respectively, so that the demolding part located in the dual-mold groove pushes out a product.

Description

Technical Field

[0001] The invention relates to the technical field of die forging, and in particular to a one-out-two die forging device. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the desired products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. In short, molds are tools used to make molded objects. This tool is composed of various parts. Different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. It is known as the "mother of industry".

[0003] The die forging process refers to heating the metal to a liquid or softened state first, then placing it into a die, and closing the upper and lower dies of the die to allow the metal to undergo plastic deformation under the constraints of the die, thereby obtaining forgings of the desired shape and size, which is characterized by high precision and high efficiency.

[0004] Existing forging dies usually adopt a one-mold-one-out production method, which is also called one-out-one in the industry. This method will lead to a decrease in product production efficiency. Therefore, in order to improve the production strength of the mold, a one-mold-two-out method is proposed based on the one-mold-one-out method, which is also called one-out-two in the industry to improve product production efficiency. However, in the one-mold-two-out method, the contact area between the product and the mold is also relatively increased, resulting in demolding difficulties in the subsequent demolding process, and it is impossible to achieve efficient and fast demolding. The traditional air pressure demolding method, which introduces compressed air into the interface layer between the product and the mold and uses the expansion force of the compressed air to separate the product from the mold, has great limitations in the one-mold-two-out method. Therefore, how to improve the demolding efficiency is a technical problem that needs to be solved in this application. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a one-outlet two-outlet die forging device, which aims to solve the problem in the prior art that the contact area between the product and the die is increased, resulting in difficulty in demolding during the subsequent demolding process and inability to demold efficiently and quickly.

[0006] The present invention provides a two-out-one die forging device, comprising a base body, a die assembly arranged on the top of the base body, at least four hydraulic columns arranged between the base body and the die assembly, and a forging die auxiliary member arranged in the axial direction of the die assembly and at least partially embedded in the die assembly; The mold assembly includes a lower mold fixedly connected to the top of the base body, an upper mold relatively arranged on the top of the lower mold and driven by the hydraulic column to move toward or away from the lower mold, and at least two demoulding auxiliary parts respectively embedded in the upper mold and the lower mold, and the upper mold and the lower mold are both embedded with double mold grooves arranged oppositely; The demoulding auxiliary component comprises at least two first demoulding frames movably embedded in the lower mold, and at least two second demoulding frames movably embedded in the upper mold, the first demoulding frames and the second demoulding frames are arranged opposite to each other, the first demoulding frames and the second demoulding frames extend demoulding parts relatively on the same side, the first demoulding frames and the second demoulding frames extend snap parts relatively on the side away from the demoulding parts, the demoulding parts are embedded in the double mold groove, and the snap parts are embedded in the edges of the upper mold and the lower mold away from the double mold groove; When the upper mold moves toward or away from the lower mold, the snap-fit ​​part engages and pulls the first demolding frame and the second demolding frame which are relatively arranged out of the upper mold and the lower mold respectively, so that the demolding part located in the double-mold groove pushes the product out.

[0007] As described above, the upper mold is lifted up by controlling the hydraulic column, and during the lifting process, the upper mold and the lower mold are in a fitted state, and the spring-lock portions on the first demolding frame and the second demolding frame are in a mutually buckled state, and in the process of lifting the upper mold and separating the lower mold, the second demolding frame located at the top is lifted up and pulls the first demolding frame buckled with it at the bottom to lift up, and at the same time, the demolding portion embedded in the double-mold groove follows the lifting and pushes out the mold material in the double-mold groove, and combines with the air guide group to achieve efficient and fast demolding operation, thereby solving the problem of difficulty in demolding in the subsequent demolding process and inability to demold efficiently and quickly in the existing one-mold-two-out forging mold due to the increase in the contact area between the product and the mold.

[0008] Furthermore, a stabilizing portion is relatively extended between the middle position of the first demoulding frame and the second demoulding frame.

[0009] Furthermore, the upper mold also includes an air guide group arranged around the double mold groove, and the air guide group is connected to the double mold groove.

[0010] Furthermore, the air guide group includes at least three exhaust holes opened on a side close to the forging die auxiliary part, an air guide groove arranged on a side of the exhaust holes close to the double-mold groove and connected to the exhaust holes, and a diversion air path extending along both sides of the air guide groove toward the edge of the double-mold groove and connected to the double-mold groove.

[0011] Furthermore, an air injection pump for connecting to the air guide group is also provided outside the mold assembly, and the air injection pump is connected to the exhaust hole.

[0012] Furthermore, the snap-fastener portion includes a spring shaft, a movable arm extending outwardly along the edge of the spring shaft, a limiting shaft arranged on a side of the movable arm away from the spring shaft, and a hanging buckle arranged on a side of the limiting shaft away from the movable arm.

[0013] Furthermore, the limiting shaft is used to cause the hook buckle to flip toward the direction approaching the movable arm, and the elastic resistance of the spring shaft causes the movable arm to rotate toward the direction away from the hook buckle.

[0014] Furthermore, the forging die auxiliary component includes a telescopic rod connected to the base body, a cylinder arranged on the top of the telescopic rod, and a forging die auxiliary rod arranged at the output end of the cylinder, and the forging die auxiliary rod moves toward or away from the double mold groove in the mold assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a one-out-two die forging device in an embodiment of the present invention; Figure 2 It is a partial cross-sectional structural schematic diagram of a die assembly in a one-out-two die forging device according to an embodiment of the present invention; Figure 3 It is a partial structural schematic diagram of the upper die in the one-out-two die forging device according to an embodiment of the present invention; Figure 4 It is a schematic diagram of a partial cross-sectional structure of a demoulding auxiliary component in a one-out-two die forging device according to an embodiment of the present invention; Figure 5 It is a schematic diagram of the enlarged structure of point A in the one-out-two die forging device in an embodiment of the present invention.

[0016] Description of main component symbols:

[0017] The following specific implementations will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0021] See also Figures 1 to 5, shown is a one-out-two die forging device in an embodiment of the present invention, comprising a base body 1, a die assembly 2 arranged on the top of the base body 1, at least four hydraulic columns 4 arranged between the base body 1 and the die assembly 2, and a forging die auxiliary member 7 arranged in the axial direction of the die assembly 2 and at least partially embedded in the die assembly 2, the die assembly 2 comprises a lower die 22 fixedly connected to the top of the base body 1, an upper die relatively arranged on the top of the lower die 22 and driven by the hydraulic column 4 to move toward or away from the lower die 22 The mold tool 21 and at least two demolding auxiliary parts 23 are respectively embedded in the upper mold 21 and the lower mold 22. The upper mold 21 and the lower mold 22 are both embedded with double mold grooves 215 arranged opposite to each other. The demolding auxiliary parts 23 include at least two first demolding frames 231 movably embedded in the lower mold 22, and at least two second demolding frames 232 movably embedded in the upper mold 21. The first demolding frames 231 and the second demolding frames 232 are arranged opposite to each other. The first demolding frames 231 and the second demolding frames 232 extend demolding parts 233 on the same side of each other. The first demolding frame 231 and the second demolding frame 232 extend out of the snap portion 234 away from the demolding portion 233, and the demolding portion 233 is embedded in the double mold groove 215. The snap portion 234 is embedded in the edges of the upper mold 21 and the lower mold 22 away from the double mold groove 215. When the upper mold 21 moves toward or away from the lower mold 22, the snap portion 234 snaps and pulls the first demolding frame 231 and the second demolding frame 232, which are arranged relatively, out of the upper mold 21 and the lower mold 22, respectively, so that the demolding portion 233 located in the double mold groove 215 is 33 pushes the product out. It should be noted that the demoulding portion 233 is adapted to the inner wall of the double-mold groove 215. It can be understood that if the inner wall of the double-mold groove 215 is arc-shaped, the part of the demoulding portion 233 in contact with the product is also arc-shaped. In some optional embodiments, the design of the demoulding portion 233 can also be to set a corresponding product number at the contact part with the product to save the subsequent secondary engraving processing of the outer surface number of the product, and at the same time, it can also hide the problem of small marks on the surface of some products caused by the influence of the demoulding portion 233 during the forging process.

[0022] Furthermore, a stabilizing portion 235 is relatively extended from the middle position of the first demolding frame 231 and the second demolding frame 232, the upper mold 21 also includes an air guide group arranged around the double mold groove 215, the air guide group is connected to the double mold groove 215, the air guide group includes at least three exhaust holes 212 opened on the side close to the forging die auxiliary member 7, an air guide groove 213 arranged on the side close to the double mold groove 215 and connected to the exhaust hole 212, and a shunt gas path 214 extending along both sides of the air guide groove 213 toward the edge of the double mold groove 215 and connected to the double mold groove 215. An air injection pump 3 for connecting to the air guide group is also provided outside the mold assembly 2, and the air injection pump 3 is connected to the exhaust hole 212. The snap-on portion 234 includes a spring shaft 2341, a spring shaft 2342 along the spring shaft 2343, and a spring shaft 2344 extending along the spring shaft 2343. 1, a movable arm 2342 extending outward from the edge of the base body 1, a limiting shaft 2343 arranged on the side of the movable arm 2342 away from the spring shaft 2341, and a hanging buckle 2344 arranged on the side of the limiting shaft 2343 away from the movable arm 2342, the hanging buckle 2344 is turned toward the movable arm 2342 by the limiting shaft 2343, and the elastic resistance of the spring shaft 2341 makes the movable arm 2342 rotate toward the direction away from the hanging buckle 2344, and the forging die auxiliary component 7 includes a telescopic rod 5 connected to the base body 1, a cylinder 6 arranged on the top of the telescopic rod 5, and a forging die auxiliary rod 7 arranged at the output end of the cylinder 6, and the forging die auxiliary rod 7 moves toward or away from the double mold groove 215 in the mold assembly 2.

[0023] It should be noted that the upper mold 21 and the lower mold 22 have the same structural design. Therefore, the subsequent description of the specific structure of the upper mold 21 can also refer to the corresponding structure of the lower mold 22.

[0024] In the specific implementation, the operator can first lift the upper mold 21 by controlling the hydraulic column 4 so that the upper mold 21 and the lower mold 22 are relatively expanded, and control the telescopic rod 5 according to the double mold groove 215 on the lower mold 22 to drive the top cylinder 6 and the forging die auxiliary rod 7 to adjust the corresponding height, so that the forging die auxiliary rod 7 can be located at the center of the double mold groove 215 in the two closed states. It should be noted that the forging die auxiliary rod 7 is used as an auxiliary part for supporting the formation of the inner cavity of the product when processing hollow products such as tubes and barrels, and the shape of the forging die auxiliary rod 7 depends on the definition of the inner cavity shape of the current processed product. In some optional embodiments, in order to improve the adaptability of the present application in the forging die process, the output end of the forging die auxiliary rod 7 and the cylinder 6 can be of a detachable design, so that the forging die auxiliary rod 7 can be replaced according to the needs of the product inner cavity. Afterwards, the operator can put the heated semi-finished mold material into the double mold groove 215 of the upper mold 21 and the lower mold 22 accordingly, and to ensure the mold The material is fully and tightly fitted with the upper die 21. During the process, the forging die auxiliary rod 7 can be controlled to move toward the upper die 21, and the forging die auxiliary rod 7 and the upper die 21 form a clamp on the die material. When the upper die 21 moves toward the lower die 22, the telescopic rod 5 is driven to drive the forging die auxiliary rod 7 to follow the decline, and after the decline is completed and the upper die 21 and the lower die 22 complete the initial forging, the telescopic rod 5 maintains the corresponding height, and the upper die 21 is repeatedly driven by the hydraulic column 4 to move toward or away from the lower die 22 to perform repeated stamping and forging operations on the die material. It should be noted that the buckle part 234 is buckled and makes the demolding auxiliary part 23 pull out of the die assembly 2. The activity range is greater than 5cm between the upper die 21 and the lower die 22. When the upper die 21 and the lower die 22 are repeatedly stamped and forged, in order to avoid pulling out the demolding auxiliary part 23 and causing premature demolding, the activity range of the upper die 21 and the lower die 22 can be controlled to be less than 5cm.

[0025] Furthermore, when the forging is completed and the demolding operation is implemented, the operator can control the air injection pump 3 to start, and connect the air injection port of the air injection pump 3 to the exhaust hole 212 to inject air into the mold assembly 2. In some optional embodiments, the air injection pump 3 can be connected to a nitrogen tank on the side away from the exhaust 212, or directly draw air into the mold assembly 2 without connecting to other gas tanks. The gas will be introduced into the air guide groove 213 in turn, and then introduced into the bypass air path 214 through the air guide groove 213 and finally enter the double-mold groove 213 between the mold material to form compressed air to assist in demolding. The bypass air path 214 is evenly distributed on the edge of the double-mold groove 215 and connected, so that the subsequent introduced gas can fully cover the double-sided groove 215, thereby improving the subsequent demolding quality. In addition, when nitrogen is introduced, compressed air can be formed in the double-mold groove 213 and the mold material to assist in demolding. At the same time, according to the low-temperature characteristics of nitrogen, the mold material surface in the mold assembly 2 can be quickly cooled, and the thermal expansion and contraction characteristics of the composite metal can be used to achieve fast and efficient demolding.

[0026] Furthermore, when the mold assembly 2 is ventilated to implement compressed air-assisted demoulding and still cannot be demoulded, the operator can control the hydraulic column 4 to drive the upper mold 21 to lift up to a height greater than 5 cm. It should be noted that in the normal state, that is, the upper mold 21 and the lower mold 22 are in a fitted state, the spring buckle parts 234 on the first demoulding frame 231 and the second demoulding frame 232 are in a mutually buckled state. Figure 4 As shown, during the process of the upper mold 21 being lifted up and separated from the lower mold 22, the second demolding frame 232 located at the top is lifted up and pulls the first demolding frame 231 buckled with it at the bottom to lift up. At the same time, the demolding portion 233 embedded in the double-mold groove 215 follows the lifting and pushes out the mold material located in the double-mold groove 215 to complete the auxiliary demolding operation. During the process, in order to ensure the stability of the first demolding frame 231 and the second demolding frame 232 in the process of lifting up and down in the mold assembly 2, the stabilizing portion 235 can move along the track in the mold assembly 2 to prevent the first demolding frame 231 and the second demolding frame 232 from tilting to one side during the subsequent force application process, causing the demolding frame to bend. In some optional embodiments, due to the limitation of the spring buckle portion 234, the expansion gap between the upper mold 21 and the lower mold 22 is limited, and it may be inconvenient to remove some of the demolding molds. In this regard, the first demolding frame 231 at the bottom is The snap-on portion 234 is designed to be movable and is called a movable snap-on, while the snap-on portion 234 on the second demolding frame 232 is a fixed structural design and is called a fixed snap-on. After the first demolding frame 231 is pulled out by the second demolding frame 232, the hydraulic column 4 drives and controls the upper mold 21 to be lowered. During the process, the movable snap-on, which has been separated from the tension limit, will flip in the opposite direction along the elastic resistance of the spring shaft 2341, and in turn drive the movable arm 2342, the limiting shaft 2343 and the hanging buckle 2344 to flip in the direction away from the fixed snap-on and disengage from the buckle. The operation is simple and quick. In addition, when it is necessary to re-fasten the two snap-on portions 234, the upper mold 21 only needs to fall normally until it fits with the lower mold 22. During the process, the fixed snap-on will directly pressurize the bottom first demolding frame 231, and at the same time, the opened movable arm 2342 will be affected by the limit of the lower mold 21 to make it flip back in the direction of the fixed snap-on and complete the buckle.

[0027] In summary, the upper mold 21 is lifted up by controlling the hydraulic column 4 to a height greater than 5 cm. In the lifting process, it should be noted that in the normal state, that is, the upper mold 21 and the lower mold 22 are in a fitted state, the spring buckle parts 234 on the first demolding frame 231 and the second demolding frame 232 are in a mutually buckled state. Figure 4As shown, during the process of the upper mold 21 being lifted up and separated from the lower mold 22, the second demolding frame 232 located at the top is lifted up and pulls the first demolding frame 231 buckled with it at the bottom to be lifted up, and at the same time, the demolding portion 233 embedded in the double mold groove 215 follows the upward lifting and pushes out the mold material in the double mold groove 215, and combines with the air guide group to achieve efficient and fast demolding operation, thereby solving the problem of difficulty in demolding in the subsequent demolding process and inability to demold efficiently and quickly in the existing one-mold-two-out forging mold due to the increase in the contact area between the product and the mold.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0029] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A one-out-two die forging device, characterized in that: The forging die assembly comprises a base body, a mold assembly arranged on the top of the base body, at least four hydraulic columns arranged between the base body and the mold assembly, and a forging die auxiliary member arranged in the axial direction of the mold assembly and at least partially embedded in the mold assembly; The mold assembly includes a lower mold fixedly connected to the top of the base body, an upper mold relatively arranged on the top of the lower mold and driven by the hydraulic column to move toward or away from the lower mold, and at least two demoulding auxiliary parts respectively embedded in the upper mold and the lower mold, and the upper mold and the lower mold are both embedded with double mold grooves arranged oppositely; The demoulding auxiliary component comprises at least two first demoulding frames movably embedded in the lower mold, and at least two second demoulding frames movably embedded in the upper mold, the first demoulding frames and the second demoulding frames are arranged opposite to each other, the first demoulding frames and the second demoulding frames extend demoulding parts relatively on the same side, the first demoulding frames and the second demoulding frames extend snap parts relatively on the side away from the demoulding parts, the demoulding parts are embedded in the double mold groove, and the snap parts are embedded in the edges of the upper mold and the lower mold away from the double mold groove; When the upper mold moves toward or away from the lower mold, the snap-fit ​​part engages and pulls the first demolding frame and the second demolding frame which are relatively arranged out of the upper mold and the lower mold respectively, so that the demolding part located in the double-mold groove pushes the product out.

2. The one-out-two die forging device according to claim 1, characterized in that: A stabilizing portion is relatively extended from the middle position of the first demoulding frame and the second demoulding frame.

3. The one-out-two die forging device according to claim 1, characterized in that: The upper mold further comprises an air guide group arranged around the double-mold groove, and the air guide group is communicated with the double-mold groove.

4. The one-out-two die forging device according to claim 3, characterized in that: The air guide group includes at least three exhaust holes opened on a side close to the forging die auxiliary part, an air guide groove arranged on a side of the exhaust holes close to the double-mold groove and connected to the exhaust holes, and a diversion air path extending along both sides of the air guide groove toward the edge of the double-mold groove and connected to the double-mold groove.

5. The one-out-two die forging device according to claim 4, characterized in that: An air injection pump for connecting to the air guide group is also provided outside the mold assembly, and the air injection pump is connected to the exhaust hole.

6. The one-out-two die forging device according to claim 1, characterized in that: The snap-fastener portion includes a spring shaft, a movable arm extending outwardly along the edge of the spring shaft, a limiting shaft arranged on a side of the movable arm away from the spring shaft, and a hooking buckle arranged on a side of the limiting shaft away from the movable arm.

7. The one-out-two die forging device according to claim 6, characterized in that: The limit shaft is used to cause the hook buckle to flip toward the direction approaching the movable arm, and the elastic resistance of the spring shaft causes the movable arm to rotate toward the direction away from the hook buckle.

8. The one-out-two die forging device according to claim 1, characterized in that: The forging die auxiliary component includes a telescopic rod connected to the base body, a cylinder arranged on the top of the telescopic rod, and a forging die auxiliary rod arranged at the output end of the cylinder, and the forging die auxiliary rod moves toward or away from the double mold groove in the mold assembly.

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