Combined stamping die for casting automobile parts

Abstract

The invention discloses a combined stamping die for casting automobile parts, and relates to the technical field of dies. The lower die core is embedded in the lower die base; the guide post is connected with the interior of the lower die holder and is used for guiding the die; the upper die holder is connected with one end of the top of the guide post and is positioned above the lower die holder; the top plate is connected with the top of the upper die base, and the four ends of the top plate are connected with the guide columns; the limiting assembly is loosened by pulling the cam wrench, the limiting plate is pushed to be disengaged from the clamping state of the buckle under the elastic action of the limiting spring, meanwhile, the bottom of the limiting plate moves to the position above the end of the bottom plate, and when the upper die base moves upwards under the action of external power, the lower die core is ejected out of the lower die body through the supporting plate, so that the lower die core is ejected out. The lower die core can be quickly and conveniently disassembled, and the problem that the lower die core in a traditional embedded die is difficult to take out due to close fit with the die holder is effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and specifically to a stamping mold for casting combined automotive parts. Background Art

[0002] In the field of casting automotive parts, stamping molds are key tools for achieving efficient forming of parts. There are various structural forms of stamping molds, and the common ones include integral type and combined type. Integral molds usually integrate the mold core and the mold base, while combined molds separate the mold core and the mold base for easy replacement and maintenance. Among them, the embedded installation method is widely used in the design of many stamping molds due to its advantages such as compact structure, accurate positioning, and high stability.

[0003] The embedded installation method is to install the mold core inside the mold base and achieve high-precision stamping forming through tight fitting. This design can effectively reduce the overall volume of the mold, save production space, and at the same time ensure the precise fit between the mold core and the mold base, improving the accuracy and consistency of stamping forming. In addition, the tight fit between the mold core and the mold base also enhances the overall stability of the mold, reducing displacement or deformation caused by vibration or impact during stamping, thereby extending the service life of the mold.

[0004] However, this embedded installation method also has some obvious deficiencies. Since there is no obvious relay point due to the tight fit between the mold core and the mold base, it is difficult to quickly remove the mold core during replacement. Operators need to spend a lot of time and effort on disassembly and installation, seriously affecting production efficiency. At the same time, the process of replacing and maintaining the mold core is complex, requiring professional tools and skilled operators, increasing the maintenance cost and time. During the process of replacing the mold core, the mold needs to be shut down for a long time, resulting in production interruption, reducing production efficiency, and increasing production costs.

[0005] To solve the above problems, the present invention proposes a stamping mold for casting combined automotive parts. While retaining the advantages of the embedded installation method, this mold optimizes the installation and disassembly method of the mold core, enabling it to quickly and conveniently replace the mold core, thereby improving production efficiency and reducing maintenance costs. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a stamping mold for casting combined automotive parts, which solves the problems raised in the background art.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A stamping mold for casting combined automotive parts, comprising: Lower mold base; Lower mold core, embedded inside the lower mold base; The guide post is internally connected to the lower die base and is used for die guiding work; The upper die base is connected to one end of the top of the guide post and is located above the lower die base; The top plate is connected to the top of the upper die base, and the four ends of the top plate are connected to the guide posts; The upper die core is embedded inside the upper die base and is used to cooperate with the lower die core to stamp and form automotive parts.

[0008] Preferably, the lower die base includes a lower die body. Cam wrenches are arranged on both sides of the lower die body. One end of the cam wrench is rotatably connected to one end of an adjusting bolt through a shaft. The adjusting wrench is slidably connected to the lower die body, and one end of the adjusting wrench is threadedly connected to a sleeve. A slider is sleeved at one end of the sleeve. The slider is slidably connected inside a limit plate. A guide seat is arranged on the top of the lower die body for positioning the upper die base; By arranging cam wrenches on both sides of the lower die body and rotatably connecting one end of the cam wrench to one end of the adjusting bolt through a shaft, the operator can easily loosen or fix the limit component by pulling the cam wrench. This design cleverly utilizes the rotational characteristics of the cam wrench and combines with the adjustment function of the adjusting bolt to facilitate the rapid disassembly and installation of the lower die core. At the same time, the sliding connection between the slider and the inside of the limit plate, as well as the threaded connection between the sleeve and the adjusting wrench, further enhances the structural stability and flexibility, ensuring that all components can be precisely matched during the disassembly process. In addition, the setting of the guide seat provides precise positioning for the upper die base, ensuring the precise alignment of the upper and lower die bases during the stamping process, thereby improving the accuracy and consistency of stamping and forming. This structural design not only effectively solves the problem that the lower die core in traditional embedded dies is difficult to disassemble quickly, significantly improves the maintenance efficiency and operation convenience of the die, and reduces the time and labor intensity required for replacing the lower die core.

[0009] Preferably, a vertically oriented groove is provided inside the limit plate, and the cross-section of the groove is in a T-shaped structure. The slider is located inside the vertically oriented groove of the limit plate. A transverse card slot is provided on one side of the top of the limit plate, and the card slot is engaged with a buckle through the sliding fit of the limit plate. The buckle is provided at both ends of a support plate. The support plate is in contact with the bottom of the lower die core. The bottom edge of the support plate is in contact with the top surface of a support table. The support table is located on the inner wall surface of the lower die body; By setting a vertical T-shaped groove inside the limit plate and embedding the slider therein, a stable sliding fit between the slider and the limit plate is achieved; this T-shaped groove structure can not only ensure the smooth movement of the slider in the vertical direction, but also prevent it from shifting in the horizontal direction, thereby ensuring the accuracy and reliability of the entire limit system; at the same time, the horizontal slot and the buckle design on the top side of the limit plate provide a stable locking mechanism for the lower mold core; when the buckle is engaged with the slot, the support plate is firmly fixed under the limit plate, and then the lower mold core is tightly fitted on the support table, ensuring that the lower mold core will not be displaced or loosened during the stamping process, thereby ensuring the accuracy and consistency of the stamping forming.

[0010] In addition, this design also cleverly combines the structure of the support platform. The support platform is located on the inner wall surface of the lower mold body, providing a stable bottom support for the support plate, further enhancing the stability of the lower mold core during the stamping process; when the lower mold core needs to be replaced, the cam wrench is pulled to make the limit plate move under the action of the limit spring, thereby releasing the engagement state of the buckle and the slot. At this time, the support plate can be lifted up as the limit plate moves, thereby driving the lower mold core to quickly escape from the lower mold body, realizing convenient disassembly of the lower mold core.

[0011] This structural design not only effectively solves the problem of the difficulty in quickly disassembling the lower mold core in traditional embedded molds, significantly improves the maintenance efficiency and operation convenience of the mold, but also reduces the dependence on professional tools and highly skilled operators, reducing maintenance costs and time. At the same time, by optimizing the limit plate and its related structures, the stability and reliability of the mold when the lower mold core is frequently replaced are further enhanced, avoiding the risk of mold damage caused by the complicated disassembly process, extending the service life of the mold, reducing production costs, and improving the overall performance and practicality of the mold.

[0012] Preferably, two limit plates are provided, one side of the two limit plates is in sliding contact with the push block, the push block is located inside the embedding groove, the push block is in sliding contact with the inner wall of the embedding groove, the embedding groove is provided on the inner walls on both sides of the lower mold body, and a limit spring is provided inside the embedding groove; By setting two limit plates and making one side of them slide in contact with the push block, and placing the push block in the embedded grooves on the inner walls of both sides of the lower mold body, this structural design realizes precise movement control of the limit plates in the horizontal direction. The sliding contact between the push block and the inner wall of the embedded groove ensures the stability and guidance of the push block during movement, and the limit spring arranged inside the embedded groove provides elastic support for the push block.

[0013] When it is necessary to disassemble the lower die core, pull the cam wrench. Through the linkage of the adjusting bolt and the sleeve, the slider moves in the T-shaped groove of the limit plate, and then pushes the limit plate to move horizontally. At this time, the elastic force of the limit spring will push the push block, and then push the limit plate to move. The design of the limit plate, the push block and their related structures significantly improves the disassembly efficiency of the lower die core and the stability of the mold by reasonably utilizing functions such as sliding contact, elastic support and automatic reset. It not only solves the problem that the lower die core in traditional embedded molds is difficult to disassemble quickly, but also reduces the dependence on professional tools and highly skilled operators, reduces the maintenance cost and time. At the same time, it enhances the stability and reliability of the mold when the die core is frequently replaced, extends the service life of the mold, and improves the overall performance and practicability of the mold.

[0014] Preferably, a bottom plate is arranged between the two limit plates. The limit plates are in sliding contact with the tops of both ends of the bottom plate. A thimble plate is arranged on the top of the bottom plate. A limit post is arranged on the top of the thimble plate. A first return spring is sleeved outside the limit post. A thimble is embedded on the top of the thimble plate for ejecting and demolding parts. The four ends of the bottom plate are connected to the bottoms of the guide posts through bolts. The guide posts are in sliding contact with the inner walls of the positioning holes. The positioning holes are opened inside the lower die body. The efficient demolding function is realized through the setting of the thimble plate and the thimble. The first return spring provides the thimble plate with the ability of automatic reset, reduces manual intervention and improves production efficiency. At the same time, the cooperation between the bottom plate and the limit plate and the guiding function of the guide posts enhance the stability of the whole system. The precise alignment of the guide posts and the positioning holes reduces the vibration and displacement during stamping and demolding, improves the stamping accuracy and the service life of the mold. This structure not only improves the demolding efficiency and product quality, but also makes the mold more convenient for disassembly and maintenance, further optimizing the use performance and economy of the mold.

[0015] Preferably, a limit block is sleeved on one end of the top of the guide post, and the limit block is located on the top of the upper die base. The upper die base includes a movable block. A sealing ring is sleeved on the outer wall of the movable block, and the outer wall of the movable block is in sliding contact with the inner wall of the piston groove. A spring is arranged inside the piston groove for pushing the movable block to reset upward. The inside of the piston groove is respectively communicated with a communication hole and a flow groove. The piston groove is opened inside the upper die body. One-way valve cores are arranged inside both the communication hole and the flow groove. By sleeving a limit block on the top of the guide post, the movement range of the upper die base is restricted. At the same time, by utilizing the sliding fit between the movable block and the piston groove and the reset function of the internal spring, precise guiding and automatic reset of the upper die base are achieved. The setting of the one-way valve core with the communication and cooperation of the piston groove, the communication hole and the flow groove further optimizes the function of the hydraulic lubrication system, ensures the reasonable distribution and automatic compensation of lubricating oil during the stamping and demoulding processes, improves the service life and stamping efficiency of the die, reduces the maintenance cost, and enhances the overall performance and reliability of the die.

[0016] Preferably, lifting blocks are arranged on both sides of the upper die body. A hole groove is arranged on one side of the lifting block. The hole groove on one side of the lifting block is aligned with the flow groove through the sliding fit of the lifting block. The inside of the lifting block is of a hollow structure, and an inclined micro-hole is opened at one end of the bottom of the lifting block, and the inclined micro-hole faces the bottom of the upper die core; By arranging lifting blocks on both sides of the upper die body and utilizing its internal hollow structure and the inclined micro-holes at the bottom, precise spraying lubrication of lubricating oil is achieved. The alignment and cooperation of the hole groove and the flow groove ensure the smooth flow of lubricating oil. The design that the inclined micro-holes face the bottom of the upper die core further optimizes the lubrication effect, effectively reduces the friction during the stamping process, improves the demoulding efficiency and the die life, and at the same time reduces the risk of surface damage to parts, improves the production efficiency and product quality. When the lifting block shrinks upward, the channel is misaligned with the communication groove on the outer wall of the upper die body to achieve closing.

[0017] Preferably, the top of the lifting block is connected to the bottom of the sliding rod. The outer wall of the sliding rod is in sliding contact with the inside of both ends of the upper die body. A second return spring is sleeved outside the sliding rod; Through the connection between the lifting block and the sliding rod and the sliding fit between the sliding rod and the inside of the upper die body, the stable lifting movement of the lifting block is achieved. The setting of the second return spring provides an automatic reset function for the lifting block, ensuring that the lifting block can return to the initial position in time during the stamping and demoulding processes and avoiding interference with the normal operation of the die. This structure not only improves the automation degree and operation efficiency of the die, but also enhances the stability and reliability of the die, and further optimizes the overall performance of the stamping die.

[0018] Preferably, a groove is opened at the bottom of the upper die body. The upper die core is embedded inside the groove at the bottom of the upper die base. Fixing bolts are arranged on both sides of the upper die base. The fixing bolts are threadedly connected with the inside of the upper die base, and one end of the fixing bolt penetrates into the upper die core; By opening a groove at the bottom of the upper die body and fitting the upper die core into it, and at the same time using the threaded connection of the set screw with the upper die base and its structure that penetrates into the upper die core, the stable installation and quick replacement of the upper die core are realized. The setting of the groove provides accurate positioning for the upper die core, ensuring the precise cooperation between the upper die core and the lower die core during the stamping process. The set screw provides a reliable fixing force, so that the upper die core will not loosen during stamping. At the same time, when replacement is needed, only the bolt needs to be loosened for quick disassembly. This structure not only improves the stamping accuracy and stability of the die, but also significantly reduces the maintenance time and labor intensity, and enhances the practicality and economy of the die.

[0019] The present invention provides a combined stamping die for casting automotive parts. It has the following beneficial effects: In this combined stamping die for casting automotive parts, for the replacement operation of the lower die core, by pulling the cam wrench, the loosening of the limiting component is realized. Under the elastic action of the limiting spring, the limiting plate is pushed and disengaged from the snap connection, and at the same time, the bottom of the limiting plate moves above the end of the bottom plate. When the upper die base moves upward under the action of external power, the guide post rises accordingly, and then pulls the bottom plate upward. The upward movement of the bottom plate drives the limiting plate and the support plate to rise synchronously. Finally, the lower die core is ejected from the inside of the lower die body through the support plate, realizing the quick and convenient disassembly of the lower die core; It effectively solves the problem that the lower die core in the traditional embedded die is difficult to take out due to its tight fit with the die base, reduces the time and labor intensity required for replacing the lower die core, and at the same time reduces the dependence on professional tools and highly skilled operators; In addition, this structural design also ensures the stability and reliability of the die during frequent die core replacement, avoids the risk of die damage caused by complex disassembly process, prolongs the service life of the die, and reduces the production cost. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view structural schematic diagram of the present invention; Figure 3 It is a sectional structural schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the upper die core of the present invention; Figure 5 It is a structural schematic diagram of the lower die body of the present invention; Figure 6 It is a structural schematic diagram of the lower die core of the present invention; Figure 7 It is a structural schematic diagram of the limiting plate of the present invention; Figure 8 It is a structural schematic diagram of the upper die body of the present invention; Figure 9 Schematic diagram of the support plate structure of the present invention; Figure 10 Schematic diagram of the limit block structure of the present invention.

[0021] In the figure, 1 is the lower die base; 101 is the lower die body; 102 is the cam wrench; 103 is the adjusting bolt; 104 is the sleeve; 105 is the slider; 106 is the limit plate; 107 is the bottom plate; 108 is the ejector plate; 109 is the limit post; 110 is the first return spring; 111 is the buckle; 112 is the support plate; 113 is the guide seat; 114 is the embedded groove; 115 is the positioning hole; 116 is the support table; 117 is the limit spring; 118 is the push block; 2 is the lower die core; 3 is the guide post; 301 is the limit block; 4 is the upper die base; 401 is the movable block; 402 is the piston groove; 403 is the upper die body; 404 is the flow groove; 405 is the one-way valve core; 406 is the lifting block; 407 is the slide bar; 408 is the second return spring; 409 is the communication hole; 410 is the set bolt; 5 is the top plate; 6 is the upper die core. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Embodiment 1: Please refer to Figures 1-10 , the embodiments of the present invention provide a technical solution: a combined stamping die for casting automotive parts, including: Lower die base 1; Lower die core 2, embedded inside the lower die base 1; Guide post 3, connected to the inside of the lower die base 1 for die guiding work; Upper die base 4, connected to one end of the top of the guide post 3 and located above the lower die base 1; Top plate 5, connected to the top of the upper die base 4, and the four ends of the top plate 5 are connected to the guide post 3; Upper die core 6, embedded inside the upper die base 4 for cooperating with the lower die core 2 to form automotive parts by stamping; The stamping die for casting combined automotive parts has significant innovation and practicality in the disassembly design of the lower die core 2. By optimizing the cooperation mode between the lower die core 2 and the lower die base 1, it not only retains the advantages of high precision and stability of the embedded installation, but also ingeniously solves the problem that the lower die core 2 in traditional embedded dies is difficult to disassemble. Specifically, on the basis of ensuring the close cooperation and precise positioning between the lower die core 2 and the lower die base 1 during the stamping process, through structural optimization, the lower die core 2 can be quickly and conveniently taken out from the lower die base 1 when replacement is needed; it not only reduces the time and labor intensity required for replacing the lower die core 2, but also avoids potential damage to the die caused by frequent disassembly; in addition, this convenient disassembly method also reduces the dependence on professional tools and highly skilled operators, further improving the usability and versatility of the die.

[0024] Embodiment 2: Please refer to Figures 1-10 , the embodiment of the present invention provides a technical solution: a stamping die for casting combined automotive parts, the lower die base 1 includes a lower die main body 101, cam wrenches 102 are arranged on both sides of the lower die main body 101, one end of the cam wrench 102 is rotatably connected to one end of an adjusting bolt 103, the adjusting wrench is slidably connected to the lower die main body 101, and one end of the adjusting wrench is threadedly connected to a sleeve 104, a slider 105 is sleeved at one end of the sleeve 104, the slider 105 is slidably connected inside a limit plate 106, a guide seat 113 is arranged on the top of the lower die main body 101 for positioning the upper die base 4; a vertical groove is arranged inside the limit plate 106, and the cross section of the groove is in a T-shaped structure, the slider 105 is located inside the vertical groove of the limit plate 106, a transverse card slot is opened on one side of the top of the limit plate 106, and the card slot is clamped with a buckle 111 through the sliding fit of the limit plate 106, the buckle 111 is opened at both ends of a support plate 112, the support plate 112 is attached to the bottom of the lower die core 2, the bottom edge of the support plate 112 contacts the top surface of a support table 116, the support table 116 is located on the inner wall surface of the lower die main body 101; there are two limit plates 106, one side of the two limit plates 106 is in sliding contact with a push block 118, the push block 118 is located inside an embedding groove 114, the push block 118 is in sliding contact with the inner wall of the embedding groove 114, the embedding groove 114 is opened on both inner walls of the lower die main body 101, and a limit spring 117 is arranged inside the embedding groove 114; a bottom plate 107 is arranged between the two limit plates 106, the limit plates 106 are in sliding contact with the top of both ends of the bottom plate 107, a thimble plate 108 is arranged on the top of the bottom plate 107, a limit post 109 is arranged on the top of the thimble plate 108, a first return spring 110 is sleeved outside the limit post 109, thimbles are embedded on the top of the thimble plate 108 for ejecting and demolding parts, four ends of the bottom plate 107 are connected to the bottom of a guide post 3 through bolts, the guide post 3 is in sliding contact with the inner wall of a positioning hole 115, and the positioning hole 115 is opened inside the lower die main body 101; When the lower mold core 2 is replaced, since the lower mold core 2 is embedded in the lower mold body 101, it fits tightly with the lower mold body 101 without a good relay point and is not easy to be taken out, the cam wrench 102 is pulled to loosen the cam wrench 102, and the limit plate 106 can be pushed to move under the push of the limit spring 117, so that the top end of the limit plate 106 can be disengaged from the engagement with the buckle 111, and at the same time, the bottom end of the limit plate 106 can be moved above the end of the bottom plate 107, and then when the upper mold base 4 moves upward, it will drive the guide rod to move upward, and then the guide rod will pull the bottom plate 107 to move upward, so that the bottom plate 107 can drive the limit plates 106 at the top ends to move upward, and the limit plate 106 can drive the support plate 112 to move upward while moving upward, and then the support plate 112 can drive the lower mold core 2 to move upward, so that the lower mold core 2 can be moved out of the lower mold body 101, so that the lower mold core 2 can be easily taken out; The combined stamping die for casting automobile parts significantly improves the replacement efficiency and reduces the labor intensity by optimizing the replacement method of the lower die core 2; it makes it easier to remove the lower die core 2, avoids damage to the die caused by frequent disassembly, and also reduces the requirements on the skill level of the operator.

[0025] Example 3: Please refer to Figures 1-10 The embodiment of the present invention provides a technical solution: a combined stamping die for casting automotive parts, a limit block 301 is set at one end of the top of the guide column 3, and the limit block 301 is located at the top of the upper die seat 4, the upper die seat 4 includes a movable block 401, the outer wall of the movable block 401 is set with a sealing ring, and the outer wall of the movable block 401 is in sliding contact with the inner wall of the piston groove 402, a spring is arranged inside the piston groove to push the movable block to reset upward, the inside of the piston groove 402 is connected with the connecting hole 409 and the circulation groove 404 respectively, the piston groove 402 is opened inside the upper die body 403, and the connecting hole 409 and the circulation groove 404 are both provided with a one-way valve core 405; lifting blocks 406 are arranged on both sides of the upper die body 403, and the lifting blocks 406 A hole groove is provided on one side, and the hole groove on one side of the lifting block 406 is aligned with the circulation groove 404 through the sliding fit of the lifting block 406. The interior of the lifting block 406 is a hollow structure, and an oblique microhole is provided at one end of the bottom of the lifting block 406, and the oblique microhole faces the bottom of the upper mold core 6; the top of the lifting block 406 is connected to the bottom of the slide rod 407, and the outer wall of the slide rod 407 is in sliding contact with the interior of the two ends of the upper mold body 403, and the outside of the slide rod 407 is sleeved with a second return spring 408; a groove is provided at the bottom of the upper mold body 403, and the upper mold core 6 is embedded in the groove at the bottom of the upper mold base 4, and fixing bolts 410 are provided on both sides of the upper mold base 4, and the fixing bolts 410 are connected to the internal thread of the upper mold base 4, and one end of the fixing bolts 410 is inserted into the interior of the upper mold core 6; The top plate 5 is driven upward by the external hydraulic cylinder, so that the top plate 5 can drive the upper mold base 4 main body to move upward, and the four ends of the upper mold base 4 main body move upward along the guide column 3. When it moves to the top end of the guide column 3, it is restricted by the top limit block 301 of the guide column 3, and the movable block 401 will be squeezed into the piston groove 402, thereby squeezing the lubricating oil inside the piston groove 402, so that the lubricating oil inside the piston groove 402 can enter the circulation groove 404 after being squeezed, and then enter the lifting block 406 through the one-way valve core 405 inside the circulation groove 404, and then enter the bottom of the upper mold core 6 through the inclined micropores at the bottom of the lifting block 406, so that the bottom can be sprayed with oil for lubrication, which is conducive to maintaining a good demoulding effect, and then as the top plate 5 continues to move upward, the guide column 3 will be driven to move upward, and the guide column 3 will drive the bottom plate 107 to move upward synchronously When the bottom plate 107 moves upward, it will synchronously drive the top ejector plate 108 to move upward, so that it can be ejected upward by the ejector when the mold is demoulding, so as to facilitate the demoulding of automobile parts from the lower mold core 2. When the top plate 5 drives the upper mold base 4 to move downward for stamping, the bottom of the lifting block 406 will contact the lower mold base 1, so that the lifting block 406 can shrink upward and compress the second return spring 408, so as to avoid the lifting block 406 from interfering with the mold closing of the upper mold base 4 and the lower mold base 1. At the same time, when the upper mold base 4 moves downward, the movable block 401 will be separated from the contact with the bottom of the limit block 301. Under the action of the spring inside the piston groove 402, the movable block 401 is pushed to move upward, and the connecting hole 409 generates suction. By connecting the connecting hole 409 with the external oil supply hose, the automatic compensation of the lubricating oil inside the piston groove 402 is realized. The stamping die achieves efficient demoulding and lubrication through hydraulic drive and automatic oil spray lubrication system. The advantages of oil spray lubrication are that it can reduce friction, improve demoulding effect, extend mold life, reduce manual intervention and ensure uniform lubrication. It can effectively solve various problems caused by friction in the stamping process, ensure the smooth progress of the stamping process, reduce surface damage of parts and mold wear, and improve production efficiency and product quality.

[0026] The overall working process of the combined stamping die for casting automotive parts is as follows: First, an external hydraulic cylinder drives the top plate 5 to move upward. The upward movement of the top plate 5 drives the upper die base 4 to move upward along the guide column 3. When the upper die base 4 moves to the top of the guide column 3, restricted by the limit block 301, the movable block 401 is squeezed into the piston groove 402, squeezing the lubricating oil in the piston groove 402, which flows into the lifting block 406 through the one-way valve core 405 and is sprayed onto the bottom of the upper die core 6 through the inclined micropores at the bottom of the lifting block 406, achieving automatic lubrication and ensuring a good demoulding effect. As the top plate 5 continues to rise, the guide column 3 drives the bottom plate 107 to move upward synchronously. The bottom plate 107 drives the ejector pin plate 108 to rise, and the ejector pins on the ejector pin plate 108 push upward, facilitating the demoulding of the automotive parts from the lower die core 2. When the top plate 5 drives the upper die base 4 to move downward for stamping, the bottom of the lifting block 406 contacts the lower die base 1, causing the lifting block 406 to contract upward and compress the second return spring 408, preventing the lifting block 406 from interfering with the closing of the upper die base 4 and the lower die base 1. At the same time, the movable block 401 disengages from the contact with the bottom of the limit block 301 and resets under the action of the spring in the piston groove 402, pushing the movable block 401 upward and generating suction in the communication hole 409. By connecting the communication hole 409 to an external oil supply hose, automatic compensation of the lubricating oil in the piston groove 402 is achieved.

[0027] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed invention.

[0028] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stamping die for casting combined automotive parts, characterized in that, Comprising: Lower die base (1); Lower die core (2), embedded inside the lower die base (1); Guide post (3), connected to the inside of the lower die base (1); Upper die base (4), connected to one end of the top of the guide post (3), located above the lower die base (1); Top plate (5), connected to the top of the upper die base (4), and the four ends of the top plate (5) are connected to the guide posts (3); Upper die core (6), embedded inside the upper die base (4), for cooperating with the lower die core (2) to stamp and form automotive parts.

2. The stamping die for casting combined automotive parts according to claim 1, characterized in that: The lower die base (1) includes a lower die main body (101), on both sides of the lower die main body (101) there are cam wrenches (102), one end of the cam wrench (102) is rotatably connected to an adjusting bolt (103) through a shaft, the adjusting wrench is slidably connected to the lower die main body (101), and one end of the adjusting wrench is threadedly connected to a sleeve (104), one end of the sleeve (104) is sleeved with a slider (105), the slider (105) is slidably connected inside a limit plate (106), and on the top of the lower die main body (101) there is a guide seat (113) for positioning the upper die base (4).

3. The stamping die for casting a combined automotive part according to claim 2, wherein: Inside the limit plate (106) there are vertically-directional grooves, and the cross-section of the grooves is in a T-shaped structure, the slider (105) is located inside the vertically-directional grooves of the limit plate (106), on one side of the top of the limit plate (106) there is a horizontally-directional card slot, and the card slot is engaged with a buckle (111) through the sliding fit of the limit plate (106), the buckle (111) is opened at both ends of a support plate (112), the support plate (112) is in contact with the bottom of the lower die core (2), and the bottom edge of the support plate (112) is in contact with the top surface of a support table (116), and the support table (116) is located on the inner wall surface of the lower die main body (101).

4. The stamping die for casting combined automotive parts according to claim 3, wherein: There are two limit plates (106), one side of the two limit plates (106) is in sliding contact with a push block (118), the push block (118) is located inside an embedding groove (114), the push block (118) is in sliding contact with the inner wall of the embedding groove (114), the embedding groove (114) is opened on both sides of the inner wall of the lower die main body (101), and inside the embedding groove (114) there is a limit spring (117).

5. The stamping die for casting combined automotive parts according to claim 4, characterized in that: Between the two limit plates (106) there is a bottom plate (107), the limit plates (106) are in contact with the top of both ends of the bottom plate (107) through sliding fit, on the top of the bottom plate (107) there is a thimble plate (108), on the top of the thimble plate (108) there is a limit post (109), outside the limit post (109) there is a first return spring (110) sleeved, the thimble plate (108) is embedded with thimbles for ejecting and demolding parts, and the four ends of the bottom plate (107) are connected to the bottom of the guide posts (3) through bolts, and the guide posts (3) are in sliding contact with the inner wall of a positioning hole (115), and the positioning hole (115) is opened inside the lower die main body (101).

6. The stamping die for casting combined automotive parts according to claim 5, characterized in that: A limiting block (301) is sleeved on one end of the top of the guiding column (3), and the limiting block (301) is located on the top of the upper die base (4). The upper die base (4) includes a movable block (401). A sealing ring is sleeved on the outer wall of the movable block (401), and the outer wall of the movable block (401) is in sliding contact with the inner wall of the piston groove (402). The inside of the piston groove (402) is respectively communicated with a communication hole (409) and a flow groove (404). The piston groove (402) is opened inside the upper die main body (403). One-way valve cores (405) are arranged inside both the communication hole (409) and the flow groove (404).

7. The stamping die for casting combined automotive parts according to claim 6, wherein: Lifting blocks (406) are arranged on both sides of the upper die main body (403). A hole groove is arranged on one side of the lifting block (406). The hole groove on one side of the lifting block (406) is aligned with the flow groove (404) through the sliding fit of the lifting block (406). The inside of the lifting block (406) is of a hollow structure, and an inclined micro-hole is opened at one end of the bottom of the lifting block (406), and the inclined micro-hole faces the bottom of the upper die core (6).

8. The stamping die for casting combined automotive parts according to claim 7, characterized in that: The top of the lifting block (406) is connected to the bottom of a sliding rod (407). The outer wall of the sliding rod (407) is in sliding contact with the inside of both ends of the upper die main body (403). A second return spring (408) is sleeved on the outside of the sliding rod (407).

9. The stamping die for casting combined automotive parts according to claim 8, characterized in that: A groove is opened at the bottom of the upper die main body (403). The upper die core (6) is embedded inside the groove at the bottom of the upper die base (4). Fixing bolts (410) are arranged on both sides of the upper die base (4). The fixing bolts (410) are in threaded connection with the inside of the upper die base (4), and one end of the fixing bolt (410) penetrates into the inside of the upper die core (6).

Images