Cover press forging device

Abstract

The present invention discloses a cover-press forging device, comprising: a workbench; an inner die sleeve, comprising a front core-pulling seat, a rear core-pulling seat, a left die seat, and a right die seat, wherein the right die seat is provided with a first ejector hole extending therethrough; a fixed ejector pin arranged on a sliding path of the right die seat; a slideway, arranged below the workbench, wherein the workbench has a discharge passage extending therethrough; a mold, comprising a left mold, a right mold, and a demolding mechanism, wherein the demolding mechanism comprises a second ejector pin hole, a sliding ejector pin, and a reset element, wherein the sliding ejector pin is slidably arranged in the second ejector pin hole, and the reset element is connected to the sliding ejector pin; the front core-pulling seat, the rear core-pulling seat, the left die seat, and the right die seat are switched from a closed state to an open state, the left and right molds are opened, a blank is attached to the right mold, the fixed ejector pin passes through the first ejector pin hole and contacts the sliding ejector pin, causing the sliding ejector pin to extend toward the mold cavity, thereby causing the blank to separate from the right mold and fall into the slideway through the discharge passage. The present invention can improve demolding efficiency and production efficiency.

Description

Technical Field

[0001] The present invention relates to the field of casting equipment, in particular to a cover-pressing forging device. Background Art

[0002] In existing forging methods, the forging blank is primarily demolded by striking it with a striking rod. This knocking forces the blank off the die, where it is then caught by a receiving device and slides onto a sieve. This demolding method suffers from low production efficiency and high operator workload. Furthermore, the traditional Hafu mold cylinder opens and closes by sliding the left and right molds up and down along corresponding inclined surfaces. This design results in a small gap between the mold cylinders, making it difficult to remove blanks with diameters exceeding 72 mm. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0004] An object of the present invention is to provide a cover-press forging device that does not require manual demoulding or material connection, can improve demoulding efficiency, thereby improving forging production efficiency and reducing the labor intensity of operators.

[0005] In order to achieve these objects and other advantages according to the present invention, there is provided a hood-press forging device comprising:

[0006] Workbench;

[0007] an inner mold sleeve, comprising a front core-pulling seat, a rear core-pulling seat, a left mold base, and a right mold base, wherein the front core-pulling seat, the rear core-pulling seat, the left mold base, and the right mold base are slidably disposed on the workbench so as to switch between a closed state and an open state, and the right mold base is provided with a first ejector pin hole therethrough;

[0008] a bell jar, which is escalably disposed above the inner mold sleeve;

[0009] a fixed ejector pin, which is arranged on the sliding path of the right mold base;

[0010] A slideway is provided below the workbench, wherein a portion of the workbench corresponding to the sliding path of the right mold base has a discharge channel extending vertically therethrough, and the discharge channel is connected to the slideway;

[0011] A mold comprising a left mold, a right mold, and a demolding mechanism, wherein the left mold and the right mold form a cavity for processing a blank in a closed state, and the demolding mechanism comprises a second ejector pin hole, a sliding ejector pin, and a reset element, wherein the sliding ejector pin is slidably disposed in the second ejector pin hole, and the reset element is connected to the sliding ejector pin so that the sliding ejector pin is located outside the cavity;

[0012] Wherein, the left die and the right die are detachably arranged on the left die base and the right die base respectively; when the bell jar descends to the forging position, the front core pulling seat, the rear core pulling seat, the left die base and the right die base are converted to a closed state; the bell jar is arranged on the outside of the inner die sleeve; the left die and the right die are closed; when the bell jar rises to expose the inner die sleeve to the outside, the front core pulling seat, the rear core pulling seat, the left die base and the right die base are switched from a closed state to an open state; the left die and the right die are opened; the blank is attached to the right die; the fixed ejector passes through the first ejector hole of the right die base and abuts against the sliding ejector, causing the sliding ejector to extend toward the cavity, thereby causing the blank to separate from the right die and fall into the slide through the unloading channel.

[0013] Preferably, in the hood-pressed forging device, the demolding mechanism further comprises an ejector plate, the ejector plate being arranged on the outside of the right die, and one end of the sliding ejector being connected to the ejector plate; when the front core pulling seat, the rear core pulling seat, the left die seat and the right die seat are switched from a closed state to an open state, the fixed ejector abuts against the ejector plate, causing the sliding ejector to extend toward the cavity, thereby causing the blank to detach from the right die and fall into the slide.

[0014] Preferably, in the cover-press forging device, the reset element is a reset spring, and the reset spring is sleeved on the sliding ejector and located between the ejector plate and the right die.

[0015] Preferably, in the cover-pressing forging device, the inner side of the right die base has a receiving groove, and the ejector plate is located in the receiving groove.

[0016] Preferably, the cover-pressing forging device further comprises:

[0017] Lower pressure plate;

[0018] a lower punch, which is arranged on the lower pressing plate;

[0019] In which, the workbench can be raised and lowered above the lower pressure plate, and the workbench is provided with a loading port; when the workbench rises to the highest position, there is space between the lower punch and the workbench for the blank to be transferred to the lower punch; when the workbench descends to the lowest position, the lower punch passes through the loading port, causing the blank to be located inside the cavity; the slide is provided on the lower pressure plate.

[0020] Preferably, the cover-pressing forging device further comprises:

[0021] an upper pressing plate, which is arranged inside the bell jar;

[0022] an upper punch, which is arranged on the upper pressing plate;

[0023] Wherein, when the bell jar descends to the forging position, the upper punch enters the die cavity.

[0024] Preferably, the cover-press forging device further comprises a material receiving screen, and the material receiving screen is arranged below the slideway.

[0025] Preferably, the cover-pressing forging device further comprises:

[0026] A left slide rail, a front slide rail and a rear slide rail are arranged on the workbench, wherein the left slide rail, the front slide rail and the rear slide rail are located on the same horizontal plane, and the left slide rail is perpendicular to the front slide rail and the rear slide rail;

[0027] A slider assembly comprising a left slider, a front slider, and a rear slider, wherein the bottom of each of the front slider and the rear slider is provided with a slide groove, and ends of a pair of slide grooves close to the left slider are close to each other, while ends away from the left slider are away from each other; the left slider, the front slider, and the rear slider are slidably provided on the left slide rail, the front slide rail, and the rear slide rail, respectively;

[0028] The left mold base, the front core pulling base and the rear core pulling base are respectively arranged on the left slider, the front slider and the rear slider;

[0029] A connecting rod assembly comprising a first connecting rod, a second connecting rod and a third connecting rod, wherein two ends of the first connecting rod are pivotally connected to one end of the second connecting rod and one end of the third connecting rod respectively, the other end of the second connecting rod and the other end of the third connecting rod are slidably disposed in a pair of sliding grooves respectively, and the middle position of the first connecting rod is connected to the left slider;

[0030] A first linear drive mechanism is connected to the middle position of the first connecting rod, driving the first connecting rod to perform linear motion, and causing the other end of the second connecting rod and the other end of the third connecting rod to slide along a pair of the sliding grooves respectively, thereby causing the left slider, the front slider and the rear slider to slide along the left slide rail, the front slide rail and the rear slide rail respectively to move closer to or away from each other.

[0031] Preferably, in the cover-press forging device, the slider assembly further includes a right slider, wherein the right die base is provided on the right slider; and the device further includes:

[0032] a right slide rail, which is arranged on the workbench and located above the unloading channel, wherein the right slide rail, the left slide rail, the front slide rail and the rear slide rail are located on the same horizontal plane, and the right slide rail is perpendicular to the front slide rail and the rear slide rail;

[0033] A second linear drive mechanism is connected to the right slider and drives the right slider to slide along the right slide rail so as to move closer to or farther away from the left slider, the front slider, and the rear slider.

[0034] The present invention has at least the following beneficial effects:

[0035] The embodiment of the present invention provides a cover-pressing forging device, comprising: a workbench; an inner die sleeve, which comprises a front core-pulling seat, a rear core-pulling seat, a left die seat and a right die seat, wherein the front core-pulling seat, the rear core-pulling seat, the left die seat and the right die seat are slidably arranged on the workbench, so as to switch between a closed state and an open state, and the right die seat is provided with a through first ejector hole; a bell cover, which is liftably arranged above the inner die sleeve; a fixed ejector pin, which is arranged on the sliding path of the right die seat; a slide, which is arranged below the workbench, and the workbench has a discharge channel that passes through from top to bottom at a position corresponding to the sliding path of the right die seat, and the discharge channel is connected to the slide; a mold, which comprises a left mold, a right mold and a demolding mechanism, wherein the left mold and the right mold form a cavity for processing a blank in a mold-closing state, and the demolding mechanism comprises a second ejector pin hole, a sliding ejector pin and a reset element, wherein the sliding ejector pin The cam is adapted to move the front end of the die toward the front mold, and the rear end of the die toward the rear mold, and the cam is adapted to move the front end of the die toward the rear mold. The present invention realizes automatic demoulding of the blank by cooperating with the fixed ejector pin and the mold demoulding mechanism, and does not require manual demoulding or material connection, which can improve the demoulding efficiency, further improve the forging production efficiency, and reduce the labor intensity of the operator.

[0036] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1Schematic diagram of the structure of the cover-press forging device in the die-opening state according to an embodiment of the present invention;

[0038] Figure 2 Schematic diagram of the structure of the cover-press forging device in the mold closing state according to an embodiment of the present invention;

[0039] Figure 3 Schematic diagram of the structure of the inner mold sleeve in an embodiment of the present invention;

[0040] Figure 4 Schematic diagram of the structure of the right mold base and the right mold in an embodiment of the present invention;

[0041] Figure 5 A cross-sectional view of the right mold base and the right mold in an embodiment of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the left mold base, the front core pulling base, the rear core pulling base, the left slider, the front slider and the rear slider in an embodiment of the present invention;

[0043] Figure 7 Schematic diagram of the structure of the left mold base, the front core pulling base, the rear core pulling base, and the bottoms of the left slider, the front slider, and the rear slider in an embodiment of the present invention;

[0044] Figure 8 Schematic diagram of the structure of the left slider, the front slider and the rear slider in an embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0046] like Figures 1 to 5As shown, an embodiment of the present invention provides a cover-pressing forging device, comprising: a workbench 1; an inner die sleeve 2, which includes a front core-pulling seat 3, a rear core-pulling seat 4, a left die seat 5 and a right die seat 6, wherein the front core-pulling seat 3, the rear core-pulling seat 4, the left die seat 5 and the right die seat 6 are slidably arranged on the workbench 1, so as to switch between a closed state and an open state, and the right die seat 6 is provided with a through first ejector hole 29; a bell jar 7, which is movably arranged above the inner die sleeve 2; a fixed ejector 8, which is arranged on the The slide 19 is arranged below the workbench 1, and the workbench 1 has a discharge channel that passes through from top to bottom at a position corresponding to the sliding path of the right mold base 6, and the discharge channel is connected to the slide 19; the mold comprises a left mold 9, a right mold 10 and a demoulding mechanism, wherein the left mold 9 and the right mold 10 form a cavity for processing the blank in the mold closing state, and the demoulding mechanism comprises a second ejector pin hole 31, a sliding ejector pin 30 and a reset element 32, wherein the sliding ejector pin 30 can slide The second ejector hole 31 is penetrated, and the reset element 32 is connected to the sliding ejector 30 so that the sliding ejector 30 is outside the cavity; wherein the left die 9 and the right die 10 are detachably arranged on the left die base 5 and the right die base 6 respectively, and when the bell jar 7 is lowered to the forging position, the front core pulling seat 3, the rear core pulling seat 4, the left die base 5 and the right die base 6 are converted to a closed state, and the bell jar 7 is arranged on the outside of the inner die sleeve 2, the left die 9 and the right die 10 are closed, and the bell jar 7 is raised When the inner mold sleeve 2 is exposed to the outside, the front core pulling seat 3, the rear core pulling seat 4, the left mold base 5 and the right mold base 6 are switched from a closed state to an open state, the left mold 9 and the right mold 10 are opened, the blank 11 is attached to the right mold 10, the fixed ejector pin 8 passes through the first ejector pin hole 29 of the right mold base 6, and abuts against the sliding ejector pin 30, causing the sliding ejector pin 30 to extend toward the cavity, thereby causing the blank 11 to detach from the right mold 10 and fall into the slide 19 through the unloading channel.

[0047] Specifically, the cover-pressed forging device includes two parts, namely, a cover-pressed inverted die basin and a die, wherein the cover-pressed inverted die basin further includes a workbench 1, an inner die sleeve 2, a bell jar 7, a fixed ejector pin 8, and a slide 19. During the process of forging the blank by the cover-pressed forging device, the left die 9 and the right die 10 are respectively arranged on the left die base 5 and the right die base 6, and the front and rear core pullers can be placed on the front core puller 3 and the rear core puller 4 respectively. The copper rod (i.e., the blank 11) is placed inside the die, and then when the bell jar 7 descends to the forging position, the front core puller 3, the rear core puller 4, the left die base 5 and the right die base 6 are converted to a closed state, and the bell jar 7 is arranged on the outside of the inner die sleeve 2, and the left die 9 and the right die 19 are closed. The bell jar 7 simultaneously exerts an extrusion effect on the inner die sleeve 2 and the die, thereby realizing the forging of the blank 11. Moreover, when the left mold 9 and the right mold 10 are closed, the sliding ejector pin 30 in the mold is outside the mold cavity under the reset action of the reset element 32 and will not interfere with the forging process. Next, the bell jar 7 rises to expose the inner mold sleeve 2 to the outside, and the front core puller 3, the rear core puller 4, the left mold base 5 and the right mold base 6 are switched from the closed state to the open state, and the left mold 9 and the right mold 10 are opened. At this time, the blank 11 is attached to the right mold 10. As the right mold base 6 switches from the closed state to the open state, that is, as the right mold base 6 slides along the workbench 1, the fixed ejector pin 8 passes through the first ejector pin hole 29 of the right mold base 6 and contacts the sliding ejector pin 30, causing the sliding ejector pin 30 to extend into the mold cavity, thereby causing the blank 11 to detach from the right mold 10 and fall into the slide 19 through the unloading channel. Based on the above process, the blank can be automatically demolded without manual demolding or material connection, which can improve the demolding efficiency, thereby improving the forging production efficiency and reducing the labor intensity of the operator.

[0048] The blank 11 can be attached to the right mold 10 under the clamping effect of structures such as flash and protrusion. The blank is separated from the right mold by the cooperation of the fixed ejector and the demoulding mechanism on the mold.

[0049] The left die 9 and the right die 10 are both detachably mounted on the left die base 5 and the right die base 6. Existing mounting methods can be used, and this is not specifically limited in the present embodiment. Furthermore, the front core puller 3 and the rear core puller 4 are used to mount the front and rear core pullers, respectively. In some examples, the core pullers may not be mounted depending on forging requirements.

[0050] The bell jar 7 may be connected to a first lifting drive mechanism, which drives the bell jar 7 to move up and down. The first lifting drive mechanism may be a cylinder.

[0051] In a preferred embodiment, in the hood-pressing forging device, the demolding mechanism further includes a pin plate 33, which is arranged on the outside of the right die 10, and one end of the sliding pin 30 is connected to the pin plate 33; when the front core pulling seat 3, the rear core pulling seat 4, the left die seat 5 and the right die seat 6 are switched from a closed state to an open state, the fixed pin 8 abuts against the pin plate 33, causing the sliding pin 30 to extend toward the cavity, thereby causing the blank 11 to detach from the right die 10 and fall into the slide 19.

[0052] In this embodiment, the fixed ejector pin 8 does not directly contact the sliding ejector pin 30. Instead, it acts on the ejector plate 33, which applies pressure to the sliding ejector pin 30, causing the sliding ejector pin 30 to extend into the cavity, pushing the blank 11 out of the right mold 10. This design increases the reliability of the coordinated action between the fixed ejector pin and the demolding mechanism.

[0053] The number and distribution of the sliding ejector pins 30 and the fixed ejector pins 8 can be set as needed. The fixed ejector pins 8 can be fixed on the fixed ejector pin plate 18.

[0054] In a preferred embodiment, in the cover-pressing forging device, the reset element 32 is a reset spring, which is sleeved on the sliding ejector 30 and located between the ejector plate 33 and the right die 10 .

[0055] When fixed ejector pin 8 applies pressure to sliding ejector pin 30 via ejector plate 33, ejector plate 33 moves toward right mold 10, causing sliding ejector pin 30 to slide along second ejector hole 31 and extend from the mold cavity, compressing the return spring. As right mold base 6 slides along worktable 1 toward the closed position, it gradually moves away from fixed ejector pin 8. The return spring gradually forces sliding ejector pin 30 to withdraw from the mold cavity until it is completely outside.

[0056] Specifically, one end of the return spring may be connected to the ejector plate 33 .

[0057] In a preferred embodiment, in the cover-pressing forging device, the inner side of the right die base 6 has a receiving groove 37 , and the ejector plate 33 is located in the receiving groove 37 .

[0058] Specifically, the accommodating groove 37 is used to accommodate the ejector plate 33 , and the accommodating groove 37 is communicated with the first ejector hole 29 , so that the fixed ejector 8 can pass through the first ejector hole 29 to apply pressure to the ejector plate 33 .

[0059] In a preferred embodiment, the hood-pressing forging device further includes: a lower pressure plate 16; a lower punch 28, which is arranged on the lower pressure plate 16; wherein, the workbench 1 can be raised and lowered above the lower pressure plate 16, and the workbench 1 is provided with a loading port; when the workbench 1 rises to the highest position, there is space between the lower punch 28 and the workbench 1 for the blank 11 to be transferred to the lower punch 28; when the workbench 1 descends to the lowest position, the lower punch 28 passes through the loading port, causing the blank 11 to be located inside the mold cavity; the slide 19 is provided on the lower pressure plate 16.

[0060] The lower punch 28 is used to support the blank from below during the forging process of the blank 11, and completes the forging of the blank together with the left die 9, the right die 10 and the upper punch. Specifically, the lower pressing plate 16 is fixed to the machine tool worktable 17. Before loading the lower punch 28, that is, before transferring the blank to be processed to the lower punch, the worktable 1 rises to the highest position, so that a space is formed between the worktable 1 and the lower punch 28 for the blank to be transferred to the lower punch. Then, the worktable 1 is lowered to the lowest position, so that the lower punch 28 passes through the loading port, causing the blank 1 to enter the interior of the cavity.

[0061] A push rod 20 may be connected to the bottom of the workbench 1. Through holes may be provided in both the lower pressing plate 16 and the machine tool workbench 17. The push rod 20 extends through the through holes in the lower pressing plate 16 and the machine tool workbench 17 to the bottom of the machine tool workbench 17 and then connects to a second lifting drive mechanism. The second lifting drive mechanism is used to drive the workbench 1 up and down. The second lifting drive mechanism may be a pneumatic cylinder.

[0062] The machine tool workbench 17 can be provided with a slideway end section, which is connected with the slideway 19 so that the blank 11 can slide along the slideway 19 and fall into the material receiving screen located on one side of the machine tool workbench.

[0063] In a preferred embodiment, the cover-pressing forging device further includes: an upper pressure plate, which is arranged inside the bell jar 7; and an upper punch, which is arranged on the upper pressure plate; wherein, when the bell jar 7 descends to the forging position, the upper punch enters the die cavity.

[0064] In this embodiment, the upper punch is used to extrude the blank 11 from above, and completes the forging of the blank 11 together with the left die 9, the right die 10 and the lower punch 28. In other examples, the upper punch may be omitted according to forging needs, that is, the upper platen and the upper punch are removed from the bell 7, and only the left die 9, the right die 10 and the lower punch 28 are used to complete the forging of the blank 11.

[0065] In a preferred embodiment, the cover-press forging device further includes a material receiving screen, and the material receiving screen is arranged below the slideway 19.

[0066] Specifically, the receiving screen may be provided below the end of the chute 19 so as to directly collect the blanks 11 sliding out of the chute 19 .

[0067] like Figures 1 to 3 as well as Figures 6 to 8 As shown, in a preferred embodiment, the cover-pressing forging device further includes: a left slide rail 23, a front slide rail 21 and a rear slide rail 22, which are arranged on the workbench 1, the left slide rail 23, the front slide rail 21 and the rear slide rail 22 are located on the same horizontal plane, and the left slide rail 23 is perpendicular to the front slide rail 21 and the rear slide rail 22; a slider assembly, which includes a left slider 26, a front slider 24 and a rear slider 25, wherein the bottom of the front slider 24 and the rear slider 25 are each provided with a slide groove 36, 37, a pair of the slide grooves 36, 37 close to the left slider 26 one end is close to each other, and the end away from the left slider 26 is away from each other; the left slider 26, the front slider 24 and the rear slider 25 are respectively slidably arranged on the left slide rail 23, the front slide rail 21 and the rear slide rail 22; the left die base 5, the front core pulling base 3 and the rear core pulling base 4 are respectively arranged on the left slider 26, On the front slider 24 and the rear slider 25; the connecting rod assembly 13 includes a first connecting rod 33, a second connecting rod 34 and a third connecting rod 35, wherein the two ends of the first connecting rod 33 are respectively pivotally connected to one end of the second connecting rod 34 and one end of the third connecting rod 35, and the other end of the second connecting rod 34 and the other end of the third connecting rod 35 are respectively slidably disposed in a pair of sliding grooves 36, 37, and the middle position of the first connecting rod 33 is connected to the left slider 26; a first linear drive mechanism 14, which is connected to the middle position of the first connecting rod 33, drives the first connecting rod 33 to perform linear motion, and causes the other end of the second connecting rod 34 and the other end of the third connecting rod 35 to slide along a pair of sliding grooves 36, 37 respectively, so that the left slider 26, the front slider 24 and the rear slider 25 slide along the left slide rail 23, the front slide rail 21 and the rear slide rail 22 respectively, so as to move closer to or away from each other.

[0068] Specifically, when the first linear drive mechanism 14 drives the first link 33 to make a linear motion in the left direction, the first link 33 drives the left slider 26 to slide along the left slide rail 23 in the left direction. At the same time, the first link 33 will drive one end of the second link 34 and one end of the third link 35 to move in the left direction, so that the other end of the second link 34 and the other end of the third link 35 slide along their respective slide grooves 36, 37, and then drive the front slider 24 and the rear slider 25 to slide along the front slide rail 21 and the rear slide rail 22 in the front and rear directions respectively, so that the left mold base 5, the front core pulling base 3 and the rear core pulling base 4 are moved away from each other, realizing the open state of the left mold base 5, the front core pulling base 3 and the rear core pulling base 4. Correspondingly, when the first linear drive mechanism 14 drives the first connecting rod 33 to make a linear motion to the right, the first connecting rod 33 drives the left slider 26 to slide along the left slide rail 23 to the right, and at the same time, the first connecting rod 33 will drive one end of the second connecting rod 34 and one end of the third connecting rod 35 to move to the right, so that the other end of the second connecting rod 34 and the other end of the third connecting rod 35 slide along their respective slide grooves 36, 37, and then drive the front slider 24 and the rear slider 25 to slide along the front slide rail 21 and the rear slide rail 22 to the rear and front directions respectively, so that the left mold base 5, the front core pulling base 3 and the rear core pulling base 4 are close to each other, realizing the closed state of the left mold base 5, the front core pulling base 3 and the rear core pulling base 4.

[0069] The first linear drive mechanism 14 may be a cylinder.

[0070] In the embodiment of the present invention, the left slide rail, the front slide rail, and the rear slide rail are arranged on the same horizontal plane, and the left slide rail is perpendicular to the front slide rail and the rear slide rail, so that when the left slider, the front slider, and the rear slider slide along their respective slide rails, the left die holder, the front core puller, and the rear core puller can slide along the horizontal plane, thereby increasing the gap opened by the inner die sleeve. It can also be understood that the die opening gap between the left and right dies can be increased, thereby reducing the difficulty of removing the processed blank. The cover-press forging device provided by the embodiment of the present invention can be used to process products with a diameter range of less than 120, and is suitable for forging large products.

[0071] like Figures 1 to 3 as well as Figure 4 and Figure 5As shown, in a preferred embodiment, in the hood-pressing forging device, the slider assembly also includes a right slider 38, wherein the right die base 6 is arranged on the right slider; the device also includes: a right slide rail 27, which is arranged on the workbench 1, above the unloading channel, the right slide rail 27, the left slide rail 23, the front slide rail 21 and the rear slide rail 22 are located on the same horizontal plane, and the right slide rail 27 is perpendicular to the front slide rail 21 and the rear slide rail 22; a second linear drive mechanism 15, which is connected to the right slider, drives the right slider 38 to slide along the right slide rail 27 to move closer to or away from each other relative to the left slider 26, the front slider 24 and the rear slider 25.

[0072] Specifically, the second linear drive mechanism 15 drives the right slider 38 to perform linear motion along the right slide rail 27 toward the right, causing the right slider 38 to move away from the left slider 26, the front slider 24, and the rear slider 25, thereby opening the right mold base 6. Correspondingly, the second linear drive mechanism 15 drives the right slider 38 to perform linear motion along the right slide rail 27 toward the left, causing the right slider 38 to move toward the left slider 26, the front slider 24, and the rear slider 25, thereby closing the right mold base 6.

[0073] The second linear drive mechanism 15 may be a cylinder.

[0074] In the embodiment of the present invention, the right slide rail, the left slide rail, the front slide rail and the rear slide rail are arranged on the same horizontal plane, and the right slide rail and the left slide rail are perpendicular to the front slide rail and the rear slide rail, so that when the right slider, the left slider, the front slider and the rear slider slide along their respective slide rails, the right die base, the left die base, the front core puller and the rear core puller can slide along the horizontal plane, thereby increasing the gap of the inner die sleeve. It can also be understood that the die opening gap of the left die and the right die can be increased, thereby reducing the difficulty of removing the processed blank. The cover pressure forging device provided by the embodiment of the present invention can be used to process products with a diameter range of less than 120, and is suitable for forging large products.

[0075] The working process of the cover-pressing forging device provided in the embodiment of the present invention is described below.

[0076] The bell jar 7 rises to a certain position, and the workbench 1 rises to the highest position, thereby forming sufficient loading space between the workbench 1 and the lower punch 28. The right die base 6 is in a closed state, and the left die base 5, the front core puller 3 and the rear core puller 4 are in an open state. The copper rod (i.e., the blank 11) is placed on the lower punch 28. Driven by the first oil cylinder, the left die base 5, the front core puller 3 and the rear core puller 4 are closed, thereby achieving the clamping of the left mold 9 and the right mold 10. Afterwards, the bell jar 7 descends, and during the descent, it presses down the inner mold sleeve 2. The bell jar 7, the inner mold sleeve 2 and the workbench 1 descend together to the lowest position. During the descent of the bell jar 7, the inner mold sleeve 2 and the workbench 1, the upper punch, the lower punch 28 and the mold together achieve the extrusion of the copper rod, thereby completing the forging. After forging, the left die base 5, the front core pulling base 3 and the rear core pulling base 4 are converted to the open state under the drive of the first oil cylinder, and the right die base 6 is converted to the open state under the drive of the second oil cylinder. In addition, when the right die base 6 slides to the right along the right slide rail 27, the fixed ejector 8 passes through the first ejector hole 29 and abuts against the ejector plate 33, thereby pushing the sliding ejector 30 to extend into the cavity, so that the processed copper rod is separated from the right die 10, falls into the slide 19 through the unloading channel below, and finally slides into the receiving screen.

[0077] In summary, the present invention realizes automatic demolding of the blank by cooperating with the fixed ejector pin and the mold demolding mechanism, without the need for manual demolding or material connection, which can improve the demolding efficiency, thereby improving the forging production efficiency and reducing the labor intensity of the operator. In addition, the present invention can increase the gap between the inner die sleeve, that is, it can increase the die opening gap between the left die and the right die, thereby reducing the difficulty of removing the processed blank. The cover pressure forging device provided in the embodiment of the present invention can be used to process products with a diameter range of less than 120, and is suitable for forging large products.

[0078] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Further modifications will be readily apparent to those skilled in the art. Therefore, the present invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. A cover-type forging device, characterized in that: include: Workbench; an inner mold sleeve, comprising a front core-pulling seat, a rear core-pulling seat, a left mold base, and a right mold base, wherein the front core-pulling seat, the rear core-pulling seat, the left mold base, and the right mold base are slidably disposed on the workbench so as to switch between a closed state and an open state, and the right mold base is provided with a first ejector pin hole therethrough; a bell jar, which is escalably disposed above the inner mold sleeve; A fixed ejector pin is provided on the sliding path of the right mold base; A slideway is provided below the workbench, wherein a portion of the workbench corresponding to the sliding path of the right mold base has a discharge channel extending vertically therethrough, and the discharge channel is connected to the slideway; A mold comprising a left mold, a right mold, and a demolding mechanism, wherein the left mold and the right mold form a cavity for processing a blank in a closed state, and the demolding mechanism comprises a second ejector pin hole, a sliding ejector pin, and a reset element, wherein the sliding ejector pin is slidably disposed in the second ejector pin hole, and the reset element is connected to the sliding ejector pin so that the sliding ejector pin is located outside the cavity; Wherein, the left die and the right die are detachably arranged on the left die base and the right die base respectively; when the bell jar descends to the forging position, the front core pulling seat, the rear core pulling seat, the left die base and the right die base are converted to a closed state; the bell jar is arranged on the outside of the inner die sleeve; the left die and the right die are closed; when the bell jar rises to expose the inner die sleeve to the outside, the front core pulling seat, the rear core pulling seat, the left die base and the right die base are switched from a closed state to an open state; the left die and the right die are opened; the blank is attached to the right die; the fixed ejector passes through the first ejector hole of the right die base and abuts against the sliding ejector, causing the sliding ejector to extend toward the cavity, thereby causing the blank to separate from the right die and fall into the slide through the unloading channel.

2. The hood-press forging device according to claim 1, wherein: The demolding mechanism also includes an ejector plate, which is arranged on the outside of the right mold, and one end of the sliding ejector is connected to the ejector plate; when the front core pulling seat, the rear core pulling seat, the left mold base and the right mold base are switched from a closed state to an open state, the fixed ejector abuts against the ejector plate, causing the sliding ejector to extend toward the cavity, thereby causing the blank to detach from the right mold and fall into the slide.

3. The hood-press forging device according to claim 2, wherein: The reset element is a reset spring, which is sleeved on the sliding ejector and located between the ejector plate and the right mold.

4. The hood-press forging device according to claim 2, wherein: The inner side of the right mold base is provided with a receiving groove, and the ejector plate is located in the receiving groove.

5. The hood-press forging device according to claim 1, wherein: Also includes: Lower pressure plate; a lower punch, which is arranged on the lower pressing plate; In which, the workbench can be raised and lowered above the lower pressure plate, and the workbench is provided with a loading port; when the workbench rises to the highest position, there is space between the lower punch and the workbench for the blank to be transferred to the lower punch; when the workbench descends to the lowest position, the lower punch passes through the loading port, causing the blank to be located inside the cavity; the slide is provided on the lower pressure plate.

6. The hood-press forging device according to claim 1, wherein: Also includes: an upper pressing plate, which is arranged inside the bell jar; an upper punch, which is arranged on the upper pressing plate; Wherein, when the bell jar descends to the forging position, the upper punch enters the die cavity.

7. The hood-press forging device according to claim 1, wherein: It also includes a material receiving screen, which is arranged below the slideway.

8. The hood press forging device according to any one of claims 1 to 7, characterized in that: Also includes: A left slide rail, a front slide rail and a rear slide rail are arranged on the workbench, wherein the left slide rail, the front slide rail and the rear slide rail are located on the same horizontal plane, and the left slide rail is perpendicular to the front slide rail and the rear slide rail; A slider assembly comprising a left slider, a front slider, and a rear slider, wherein the bottom of each of the front slider and the rear slider is provided with a slide groove, and ends of a pair of slide grooves close to the left slider are close to each other, while ends away from the left slider are away from each other; the left slider, the front slider, and the rear slider are slidably provided on the left slide rail, the front slide rail, and the rear slide rail, respectively; The left mold base, the front core pulling base and the rear core pulling base are respectively arranged on the left slider, the front slider and the rear slider; A connecting rod assembly comprising a first connecting rod, a second connecting rod and a third connecting rod, wherein two ends of the first connecting rod are pivotally connected to one end of the second connecting rod and one end of the third connecting rod respectively, the other end of the second connecting rod and the other end of the third connecting rod are slidably disposed in a pair of sliding grooves respectively, and the middle position of the first connecting rod is connected to the left slider; A first linear drive mechanism is connected to the middle position of the first connecting rod, driving the first connecting rod to perform linear motion, and causing the other end of the second connecting rod and the other end of the third connecting rod to slide along a pair of the sliding grooves respectively, thereby causing the left slider, the front slider and the rear slider to slide along the left slide rail, the front slide rail and the rear slide rail respectively to move closer to or away from each other.

9. The hood-press forging device according to claim 8, wherein: The slider assembly further includes a right slider, wherein the right mold base is disposed on the right slider; the device further includes: a right slide rail, which is arranged on the workbench and located above the unloading channel, wherein the right slide rail, the left slide rail, the front slide rail and the rear slide rail are located on the same horizontal plane, and the right slide rail is perpendicular to the front slide rail and the rear slide rail; A second linear drive mechanism is connected to the right slider and drives the right slider to slide along the right slide rail so as to move closer to or farther away from the left slider, the front slider, and the rear slider.

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