Forging press with device for preventing workpiece from being crushed and method thereof

Abstract

The forging press comprises a bottom plate, a female die is fixed to the middle of the top face of the bottom plate, vertical frames are fixed to the two sides of the top face of the bottom plate, and sliding grooves are formed in the bottoms of the sides, close to each other, of the two vertical frames; the two vertical frames are located on the left side and the right side of the female die, anti-crushing assemblies are arranged on the top faces of the two vertical frames and comprise transverse frames, the transverse frames are fixed to the top faces of the two vertical frames, a jack is fixedly installed in the middle of the bottom face of each transverse frame, and a pressing plate is fixed to the bottom face of the telescopic end of each jack. According to the mold, the downward pressing distance of the pressing plate is limited through the inner groove ring block, and therefore the problem that a metal material plate in a mold cavity is excessively extruded by the pressing plate, and consequently the metal material is deformed and damaged is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of forging and pressing, and specifically to a forging press with a device for preventing workpiece from being crushed and its method. Background Art

[0002] A forging press is a metal processing equipment used to process metal sheets into workpieces of required shapes. By applying pressure, the metal sheet is placed in a mold for shaping. A forging press with a device for preventing workpiece from being crushed can reduce or avoid unnecessary damage to the metal sheet during forging, prevent the metal sheet from being deformed due to excessive pressure during forging, improve the quality and consistency of products, and reduce the rejection rate of metal sheets.

[0003] The patent with the patent number CN218020382U discloses a protective device for blanking of a forging press, which is arranged in front of the forging press and includes a workbench. A plurality of balls are evenly arranged on the upper end surface of the workbench. A placement plate lower than the workbench is arranged in front of the workbench. A long groove with an opening facing backward is placed on the placement plate. A clamping plate is horizontally arranged inside the long groove. The lower end surface inside the long groove is flush with the upper end surface of the balls. A guide shaft is arranged at the upper end of the clamping plate. A guide hole corresponding to the guide shaft is opened at the upper end of the long groove. A threaded through hole is opened at the upper end surface of the long groove. A threaded rod is threadedly connected inside the threaded through hole. The lower end of the threaded rod is rotatably connected to the clamping plate. This patent clamps and moves the metal sheet through the long groove, having the advantage of preventing the metal sheet from scratching the operator.

[0004] However, the current protective device for blanking of a forging press has the following problems: When this protective device for blanking of a forging press is in use, since the metal sheet is extremely likely to be over-extruded during forging, it will cause the problem of deformation and damage of the metal sheet in the die cavity due to over-extrusion. Therefore, we propose a forging press with a device for preventing workpiece from being crushed and its method. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a forging press with a device for preventing workpiece from being crushed and its method, which solves the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A forging press with a device for preventing workpiece from being crushed includes a bottom plate. A concave die is fixed in the middle of the top surface of the bottom plate. Vertical frames are fixed on both sides of the top surface of the bottom plate. Sliding grooves are opened at the bottoms of the sides of the two vertical frames close to each other. The two vertical frames are located on the left and right sides of the concave die. A component for preventing workpiece from being crushed is arranged on the top surfaces of the two vertical frames; The anti - crush component includes a horizontal frame which is fixed on the top surfaces of two vertical frames. A jack is fixedly installed in the middle of the bottom surface of the horizontal frame. A pressure plate is fixed to the bottom surface of the telescopic end of the jack. Concave rings are respectively fixed to the inner bottoms of the two vertical frames. Screw rods are respectively rotatably installed on the inner walls of the concave rings. The tops of the two screw rods penetrate through and are rotatably installed at the inner tops of the two vertical frames. Inner groove ring blocks are respectively rotatably installed on the outer walls of the two screw rods. The inner walls of the two inner groove ring blocks are meshed with the spiral grooves of the two screw rods. The two inner groove ring blocks are slidably connected to the inner walls of the sliding grooves of the two vertical frames. The bottom surfaces of the two inner groove ring blocks are fixedly connected to both sides of the top surface of the pressure plate. Circular holes are respectively formed in the top surfaces of the two inner groove ring blocks. The inner groove ring blocks limit the distance of the downward pressure of the pressure plate, so that when the pressure plate enters the die cavity of the female die to extrude the metal sheet, the pressure plate will not excessively extrude the metal sheet. An anti - jamming component is arranged on the inner wall of the circular hole of the two inner groove ring blocks; The anti - jamming component includes two Z - shaped rods which are fixed on the inner walls of the circular holes of the two inner groove ring blocks. Ring plates are respectively fixed to the ends of the two Z - shaped rods far away from each other. A number of arc - shaped elastic pieces are respectively fixed to the inner walls of the two ring plates. Two sponge rings are fixed to the ends of the number of arc - shaped elastic pieces far away from the two ring plates. The sponge rings evenly apply lubricating oil on the screw rods, enabling the inner groove ring blocks to move downward on the screw rods more smoothly; A slow - down device is arranged at the ends of the two Z - shaped rods close to each other, and an adjusting device is arranged on the front side of the slow - down device.

[0007] According to the above technical solution, a die cavity is formed in the middle of the top surface of the female die. The pressure plate is located above the die cavity of the female die. The inner wall of the die cavity of the female die is on the movement track of the outer wall of the pressure plate. The two sponge rings are respectively sleeved on the spiral grooves of the two screw rods.

[0008] According to the above technical solution, the slow - down device includes two double - tube plates, four spring rods, four rubber pads and four abutting plates. The two double - tube plates are fixed to the ends of the two Z - shaped rods close to each other. The four spring rods are respectively fixed in pairs on the inner walls of the two double - tube plates. The four rubber pads are respectively fixed to the bottom surfaces of the telescopic ends of the four spring rods. The four abutting plates are respectively fixed in pairs on the front and back of the female die. The rubber pads are in contact with the abutting plates. The spring force in the spring rods slows down the downward pressure speed of the pressure plate, so that the pressure plate will not quickly stamp on the surface of the metal sheet.

[0009] According to the above technical solution, the descender further includes four inclined rings, two inclined strip plates, and two baffles. The four inclined rings are respectively fixed at the top of the outer walls of the four spring rods. The two inclined strip plates are respectively fixed on the sides of the four inclined rings away from each other. Two circular holes are formed at the top of the sides of the two inclined strip plates away from each other. The two baffles are respectively fixed at the bottoms directly opposite to the two inclined strip plates. During the downward movement of the baffle, the baffle blocks the sputtering of sparks during forging.

[0010] According to the above technical solution, the top surfaces of the four pressing plates are all on the movement trajectories of the four rubber pads, and the two inclined strip plates are located on the front and back of the female die.

[0011] According to the above technical solution, the adjusting device includes four straight rods, two circular shells, two vertical columns, and several counterweight rings. The four straight rods are respectively fixed on the inner walls of the two circular holes of the two inclined strip plates. The two circular shells are respectively fixed directly opposite to the four straight rods. The bottom surfaces of the two circular shells are in contact with the top surface of the pressing plate. The two vertical columns are respectively fixed at the bottom ends inside the two circular shells. Several counterweight rings are respectively sleeved on the outer walls of the two vertical columns. The gravity of the counterweight rings is applied to the pressing plate to make the downward pressure of the pressing plate more uniform.

[0012] According to the above technical solution, the adjusting device further includes two circular covers, two compression springs, and two compression rings. The two circular covers are respectively fixed on the top of the outer walls of the two circular shells. The two compression springs are fixed at the top ends inside the two circular covers. The two compression rings are respectively fixed at the ends of the two compression springs away from the two circular covers. The compression rings tightly abut above the stacked counterweight rings, so that during the downward movement of the counterweight rings, the counterweight rings will not shake in the circular shells.

[0013] According to the above technical solution, several counterweight rings are stacked layer by layer inside the two circular shells, and the two compression rings are respectively arranged above the stacked counterweight rings.

[0014] A method for using a forging press with a device for preventing workpiece from being crushed: includes the following steps: S1. The staff clamps the calcined metal plate into the mold cavity of the female die; S2. Start the jack on the cross frame, and the telescopic end of the jack drives the pressing plate to move downward; S3. The inner groove ring block limits the downward movement distance of the pressing plate, so that when the pressing plate enters the mold cavity of the female die to press the metal blank, the pressing plate will not excessively press the metal blank; S4. The sponge ring evenly applies lubricating oil on the screw rod, so that the inner groove ring block can move downward on the screw rod more smoothly; S5. The spring force in the spring rod slows down the downward pressing speed of the pressing plate, so that the pressing plate will not quickly stamp on the surface of the metal blank; S6. During the downward movement of the baffle, the baffle blocks the sputtering of sparks during forging; S7. The gravity of the counterweight ring is applied to the pressure plate, making the downward pressure of the pressure plate more uniform; S8. The pressure ring tightly abuts above the stacked counterweight rings, so that during the downward pressing of the counterweight rings, the counterweight rings will not shake in the circular shell.

[0015] The present invention provides a forging press with a device for preventing workpiece from being crushed. It has the following beneficial effects: (1) In the present invention, through the cooperation of the vertical frame, horizontal frame, jack, pressure plate, concave ring, screw, inner groove ring block, Z-shaped rod, ring plate and arc-shaped elastic piece with the sponge ring, the inner groove ring block limits the downward movement distance of the pressure plate, so that when the pressure plate enters the die cavity of the concave die to extrude the metal sheet, the pressure plate will not excessively extrude the metal sheet, preventing the metal sheet from being deformed and damaged due to excessive extrusion of the pressure plate on the metal sheet in the die cavity. And the sponge ring evenly applies lubricating oil on the screw, enabling the inner groove ring block to move downward more smoothly on the screw, preventing the equipment from having a poor forging effect due to the stuck downward movement of the pressure plate.

[0016] (2) Through the setting of the slow-down device in the present invention, the double tube plate, spring rod, rubber pad, abutting plate, inclined ring and inclined strip plate cooperate with the baffle. The rubber pad contacts the abutting plate, and the spring force in the spring rod slows down the downward pressing speed of the pressure plate, so that the pressure plate will not quickly punch onto the surface of the metal sheet, preventing the surface of the metal sheet from being damaged due to the pressure plate quickly punching onto the surface of the metal sheet. And during the downward movement of the baffle, the baffle blocks the sputtering of sparks during forging, preventing the forging sparks from splashing onto the staff and causing personal injury.

[0017] (3) Through the setting of the adjustment device in the present invention, the straight rod, circular shell, vertical column, counterweight ring, circular cover and compression spring cooperate with the pressure ring. The gravity of the counterweight ring is applied to the pressure plate, making the downward pressure of the pressure plate more uniform, preventing the metal sheet from warping in the die cavity due to uneven downward pressure of the pressure plate. And the pressure ring tightly abuts above the stacked counterweight rings, so that during the downward pressing of the counterweight rings, the counterweight rings will not shake in the circular shell, preventing the stacked counterweight rings from shaking in the circular shell and causing unstable forging of the equipment. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the whole of the present invention; Figure 2 is a cross-sectional schematic diagram of the whole of the present invention; Figure 3 is a cross-sectional schematic diagram at the vertical frame of the present invention; Figure 4 is the present invention Figure 3 partial enlarged schematic diagram at A in; Figure 5 is a cross-sectional schematic diagram of the slow-down device of the present invention; Figure 6 is a schematic cross-sectional view of the adjusting device of the present invention; Figure 7 for the present invention Figure 6 is a partially enlarged schematic view of part B in the present invention.

[0019] In the figure: 1, bottom plate; 2, female die; 3, vertical frame; 31, anti-pressing component; 311, horizontal frame; 312, jack; 313, pressing plate; 314, concave ring; 315, screw; 316, inner groove ring block; 32, anti-sticking component; 321, Z-shaped rod; 322, ring plate; 323, arc-shaped elastic piece; 324, sponge ring; 4, slow-down device; 41, double tube plate; 42, spring rod; 43, rubber pad; 44, abutting plate; 45, inclined ring; 46, inclined strip plate; 47, baffle; 5, adjusting device; 51, straight rod; 52, round shell; 53, vertical column; 54, counterweight ring; 55, round cover; 56, compression spring; 57, compression ring. Specific embodiments

[0020] 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.

[0021] Please refer to Figures 1-7 , an embodiment of the present invention is: a forging press with a device for preventing workpieces from being crushed, including a bottom plate 1, a female die 2 is fixedly arranged in the middle of the top surface of the bottom plate 1, a die cavity is arranged in the middle of the top surface of the female die 2, vertical frames 3 are fixedly arranged on both sides of the top surface of the bottom plate 1, and chutes are arranged at the bottoms of the sides of the two vertical frames 3 close to each other. The two vertical frames 3 are located on the left and right sides of the female die 2; On the top surfaces of the two vertical frames 3, there is provided a component 31 for preventing injury by pressure. The component 31 for preventing injury by pressure includes a cross frame 311. The cross frame 311 is fixed on the top surfaces of the two vertical frames 3. In the middle of the bottom surface of the cross frame 311, a jack 312 is fixedly installed. The bottom surface of the telescopic end of the jack 312 is fixed with a pressing plate 313. The pressing plate 313 is located above the cavity of the female die 2. At the inner bottom ends of the two vertical frames 3, concave rings 314 are respectively fixed. Inside the inner walls of the concave rings 314, screw rods 315 are rotatably installed. The tops of the two screw rods 315 penetrate through and are rotatably installed at the inner top ends of the two vertical frames 3. Inside the outer walls of the two screw rods 315, inner groove ring blocks 316 are rotatably installed. The inner walls of the two inner groove ring blocks 316 are meshed with the helical grooves of the two screw rods 315. The two inner groove ring blocks 316 are slidably connected with the inner walls of the sliding grooves of the two vertical frames 3. The bottom surfaces of the two inner groove ring blocks 316 are fixedly connected to both sides of the top surface of the pressing plate 313. Circular holes are formed in the top surfaces of the two inner groove ring blocks 316. The inner wall of the cavity of the female die 2 is on the movement track of the outer wall of the pressing plate 313. During the downward movement of the inner groove ring block 316, the helical groove of the screw rod 315 restricts the downward movement distance of the inner groove ring block 316. The inner groove ring block 316 restricts the downward pressing distance of the pressing plate 313, so that when the pressing plate 313 enters the cavity of the female die 2 to press the metal sheet, the pressing plate 313 will not excessively press the metal sheet, avoiding deformation and damage of the metal sheet caused by the excessive pressing of the pressing plate 313 on the metal sheet in the cavity during the forging of the metal sheet by the forging press; On the inner walls of the circular holes of the two inner groove ring blocks 316, there is provided a component 32 for preventing jamming. The component 32 for preventing jamming includes two Z-shaped rods 321. The two Z-shaped rods 321 are fixed on the inner walls of the circular holes of the two inner groove ring blocks 316. At the mutually remote ends of the two Z-shaped rods 321, ring plates 322 are respectively fixed. On the inner walls of the two ring plates 322, a plurality of arc-shaped elastic pieces 323 are respectively fixed. At the ends of the plurality of arc-shaped elastic pieces 323 remote from the two ring plates 322, two sponge rings 324 are fixed. The two sponge rings 324 are respectively sleeved on the helical grooves of the two screw rods 315. Under the elastic force of the arc-shaped elastic pieces 323, the sponge rings 324 evenly apply lubricating oil on the screw rods 315, enabling the inner groove ring blocks 316 to move downward on the screw rods 315 more smoothly, avoiding poor forging effect of the equipment caused by jamming during the downward movement of the pressing plate 313 when the forging press is forging the metal sheet.

[0022] When in use, the bottom plate 1 supports the die 2, and the staff clamps the calcined metal sheet into the die cavity of the die 2. Since the metal sheet is being forged, excessive squeezing of the metal sheet can easily cause deformation and damage to the metal sheet. At this time, the bottom plate 1 supports the vertical frame 3, and the vertical frame 3 supports the horizontal frame 311. The jack 312 on the horizontal frame 311 is started, and the telescopic end of the jack 312 begins to move downward, and the telescopic end of the jack 312 drives the pressure plate 313 to move downward, and the pressure plate 313 drives the inner groove ring block 316 to move downward, and the inner groove ring block 316 moves downward in the slide groove of the vertical frame 3. Under the restriction of the slide groove of the vertical frame 3, the inner groove ring block 31 6 slides downward in the spiral groove of the screw 315, and the screw 315 rotates in the concave ring 314. During the downward movement of the inner groove ring block 316, the spiral groove of the screw 315 limits the downward movement distance of the inner groove ring block 316, so that the inner groove ring block 316 limits the downward pressing distance of the pressing plate 313, so that when the pressing plate 313 enters the die cavity of the concave die 2 to extrude the metal sheet, the pressing plate 313 will not over-extrude the metal sheet, thereby preventing the metal sheet from being over-extruded in the die cavity of the concave die 2 when the equipment is in use, thereby avoiding the problem of excessive extrusion of the metal sheet in the die cavity by the pressing plate 313 when the forging machine forges the metal sheet, causing deformation and damage of the metal sheet.

[0023] When the pressure plate 313 drives the inner groove ring block 316 to move downward, the inner groove ring block 316 drives the Z-shaped rod 321 to move downward, the Z-shaped rod 321 drives the ring plate 322 to move downward, the ring plate 322 drives the arc spring piece 323 to move downward, and the arc spring piece 323 drives the sponge ring 324 to move downward. Under the elastic force of the arc spring piece 323, the sponge ring 324 evenly applies the lubricating oil on the screw 315, so that the inner groove ring block 316 can move downward on the screw 315 more smoothly, preventing the inner groove ring block 316 from sliding and getting stuck on the screw 315 when the equipment is in use, thereby avoiding the problem of poor forging effect of the equipment caused by the pressure plate 313 moving downward and getting stuck when the forging machine is forging the metal sheet.

[0024] See also Figures 1-7, on the basis of the above embodiments, in another embodiment of the present invention, a slow descent device 4 and an adjustment device 5 are further included. Among them, slow descent devices 4 are provided at the ends of two Z-shaped rods 321 close to each other. The slow descent device 4 includes two double tube plates 41, four spring rods 42, four rubber pads 43, and four abutting plates 44. The two double tube plates 41 are fixed at the ends of the two Z-shaped rods 321 close to each other. The four spring rods 42 are respectively fixed in pairs on the inner walls of the two double tube plates 41. The four rubber pads 43 are respectively fixed on the bottom surfaces of the telescopic ends of the four spring rods 42. The four abutting plates 44 are respectively fixed in pairs on the front and back of the female die 2. The top surfaces of the four abutting plates 44 are all on the movement trajectories of the four rubber pads 43. During the downward movement of the rubber pad 43, the rubber pad 43 contacts the abutting plate 44, and the spring force in the spring rod 42 slows down the downward pressing speed of the pressing plate 313, so that the pressing plate 313 will not quickly press onto the surface of the metal sheet, avoiding damage to the surface of the metal sheet when the forging press presses the metal sheet.

[0025] The slow descent device 4 further includes four inclined rings 45, two inclined strip plates 46, and two baffle plates 47. The four inclined rings 45 are respectively fixed at the tops of the outer walls of the four spring rods 42. The two inclined strip plates 46 are respectively fixed on the sides away from each other of the four inclined rings 45. Two round holes are opened at the tops of the sides away from each other of the two inclined strip plates 46. The two baffle plates 47 are respectively fixed at the bottoms directly opposite to the two inclined strip plates 46. The two inclined strip plates 46 are located on the front and back of the female die 2. During the downward movement of the baffle plate 47, the baffle plate 47 blocks the sputtering of sparks during forging, avoiding the sputtering of forging sparks onto the staff and causing personal injury when the forging press presses the metal sheet.

[0026] An adjustment device 5 is provided directly opposite to the slow descent device 4. The adjustment device 5 includes four straight rods 51, two round shells 52, two vertical columns 53, and a number of counterweight rings 54. The four straight rods 51 are respectively fixed on the inner walls of the two round holes of the two inclined strip plates 46. The two round shells 52 are respectively fixed directly opposite to the four straight rods 51. The bottom surfaces of the two round shells 52 are in contact with the top surface of the pressing plate 313. The two vertical columns 53 are respectively fixed at the bottom ends inside the two round shells 52. A number of counterweight rings 54 are respectively sleeved on the outer walls of the two vertical columns 53. A number of counterweight rings 54 are stacked layer by layer inside the two round shells 52. During the downward movement of the counterweight rings 54, the gravity of the counterweight rings 54 is applied to the pressing plate 313, making the downward pressing force of the pressing plate 313 more uniform, avoiding the uneven downward pressing force of the pressing plate 313 causing the metal sheet to warp in the die cavity when the forging press presses the metal sheet.

[0027] The adjusting device 5 further includes two round covers 55, two compression springs 56 and two pressure rings 57. The two round covers 55 are respectively fixedly installed at the tops of the outer walls of the two round shells 52. The two compression springs 56 are fixed at the inner tops of the two round covers 55. The two pressure rings 57 are respectively fixed at the ends of the two compression springs 56 away from the two round covers 55. The two pressure rings 57 are respectively arranged above the stacked counterweight rings 54. Under the elastic force of the compression springs 56, the pressure rings 57 tightly abut above the stacked counterweight rings 54, so that when the counterweight rings 54 are pressed down, the counterweight rings 54 will not shake in the round shells 52, avoiding the shaking of the stacked counterweight rings 54 in the round shells 52 during the forging of the metal sheet by the forging press, which may cause unstable forging of the equipment.

[0028] A method for using a forging press with a device for preventing workpiece from being crushed includes the following steps: S1. The staff clamp the calcined metal sheet into the cavity of the female die 2; S2. Start the jack 312 on the cross frame 311, and the telescopic end of the jack 312 drives the pressing plate 313 to move downward; S3. The inner groove ring block 316 limits the downward pressing distance of the pressing plate 313, so that when the pressing plate 313 enters the cavity of the female die 2 to press the metal sheet, the pressing plate 313 will not overpress the metal sheet; S4. The sponge ring 324 evenly applies lubricating oil on the screw rod 315, so that the inner groove ring block 316 can move downward on the screw rod 315 more smoothly; S5. The elastic force of the spring in the spring rod 42 slows down the downward pressing speed of the pressing plate 313, so that the pressing plate 313 will not quickly punch onto the surface of the metal sheet; S6. During the downward movement of the baffle 47, the baffle 47 blocks the sputtering of sparks during forging; S7. The gravity of the counterweight ring 54 is applied to the pressing plate 313, making the downward pressing force of the pressing plate 313 more uniform; S8. The pressure ring 57 tightly abuts above the stacked counterweight rings 54, so that when the counterweight rings 54 are pressed down, the counterweight rings 54 will not shake in the round shell 52.

[0029] While the inner groove ring block 316 drives the Z-shaped rod 321 to move downward, the Z-shaped rod 321 drives the double tube plate 41 to move downward, the double tube plate 41 drives the spring rod 42 to move downward, and the spring rod 42 drives the rubber pad 43 to move downward. During the downward movement of the rubber pad 43, the rubber pad 43 contacts the abutting plate 44. Under the action of the extrusion force, the telescopic end of the spring rod 42 moves upward, so that the spring force in the spring rod 42 slows down the downward pressing speed of the pressing plate 313, preventing the pressing plate 313 from quickly stamping on the surface of the metal sheet, and avoiding the problem that the pressing plate 313 quickly stamps on the surface of the metal sheet and damages the surface of the metal sheet when the forging press is used to forge the metal sheet.

[0030] While the double tube plate 41 drives the spring rod 42 to move downward, the spring rod 42 drives the inclined ring 45 to move downward, the inclined ring 45 drives the inclined strip plate 46 to move downward, and the inclined strip plate 46 drives the baffle plate 47 to move downward. During the downward movement of the baffle plate 47, the baffle plate 47 blocks the sputtering of sparks during forging, preventing the sparks from forging from splashing onto the staff when the equipment is in use, and avoiding the problem that the sparks from forging splash onto the staff and cause injury to the staff when the forging press is used to forge the metal sheet.

[0031] While the spring rod 42 drives the inclined ring 45 to move downward, the inclined ring 45 drives the straight rod 51 to move downward, the straight rod 51 drives the circular shell 52 to move downward, the circular shell 52 drives the vertical column 53 to move downward. At the same time, the circular shell 52 drives the counterweight ring 54 to move downward. During the downward movement of the counterweight ring 54, the gravity of the counterweight ring 54 is applied to the pressing plate 313, making the downward pressing force of the pressing plate 313 more uniform, preventing the downward pressing force of the pressing plate 313 from being uneven when the equipment is in use, and avoiding the problem that the metal sheet warps in the die cavity due to the uneven downward pressing force of the pressing plate 313 when the forging press is used to forge the metal sheet.

[0032] While the straight rod 51 drives the circular shell 52 to move downward, the circular shell 52 drives the circular cover 55 to move downward, the circular cover 55 drives the compression spring 56 to move downward, and the compression spring 56 drives the compression ring 57 to move downward. Under the elastic force of the compression spring 56, the compression ring 57 tightly abuts above the stacked counterweight rings 54, so that the counterweight rings 54 do not shake in the circular shell 52 during the downward pressing process, preventing the stacked counterweight rings 54 from shaking in the circular shell 52 when the equipment is in use, and avoiding the problem that the equipment forging is unstable due to the shaking of the stacked counterweight rings 54 in the circular shell 52 when the forging press is used to forge the metal sheet.

[0033] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A forging press with a device for preventing workpiece from being crushed, comprising a bottom plate (1), wherein a female die (2) is fixedly arranged in the middle of the top surface of the bottom plate (1), and is characterized in that: On both sides of the top surface of the bottom plate (1), vertical frames (3) are fixed. At the bottom of the side of the two vertical frames (3) close to each other, chutes are opened. The two vertical frames (3) are located on the left and right sides of the female mold (2). On the top surface of the two vertical frames (3), an anti-crushing component (31) is arranged; The anti-crushing component (31) includes a cross frame (311). The cross frame (311) is fixed on the top surfaces of the two vertical frames (3). In the middle of the bottom surface of the cross frame (311), a jack (312) is fixedly installed. At the bottom surface of the telescopic end of the jack (312), a pressure plate (313) is fixed. At the inner bottom ends of the two vertical frames (3), concave rings (314) are respectively fixed. On the inner walls of the concave rings (314), screw rods (315) are respectively rotatably installed. The tops of the two screw rods (315) penetrate and are rotatably installed at the inner top ends of the two vertical frames (3). On the outer walls of the two screw rods (315), inner groove ring blocks (316) are respectively rotatably installed. The inner walls of the two inner groove ring blocks (316) are meshed with the spiral grooves of the two screw rods (315). The two inner groove ring blocks (316) are slidably connected with the inner walls of the chutes of the two vertical frames (3). The bottom surfaces of the two inner groove ring blocks (316) are fixedly connected to both sides of the top surface of the pressure plate (313). On the top surfaces of the two inner groove ring blocks (316), round holes are opened. On the inner walls of the round holes of the two inner groove ring blocks (316), an anti-stuck component (32) is arranged; The anti-stuck component (32) includes two Z-shaped rods (321). The two Z-shaped rods (321) are fixed on the inner walls of the round holes of the two inner groove ring blocks (316). At the ends of the two Z-shaped rods (321) away from each other, ring plates (322) are respectively fixed. On the inner walls of the two ring plates (322), a number of arc-shaped elastic pieces (323) are respectively fixed. At the ends of the number of arc-shaped elastic pieces (323) away from the two ring plates (322), two sponge rings (324) are fixed; At the ends of the two Z-shaped rods (321) close to each other, a slow-down device (4) is arranged. Opposite to the slow-down device (4), an adjustment device (5) is arranged.

2. The forging press with a workpiece anti-crushing device according to claim 1, characterized in that: In the middle of the top surface of the female mold (2), a mold cavity is opened. The pressure plate (313) is located above the mold cavity of the female mold (2). The inner wall of the mold cavity of the female mold (2) is on the movement track of the outer wall of the pressure plate (313). The two sponge rings (324) are respectively sleeved on the spiral grooves of the two screw rods (315).

3. The forging press with a workpiece anti-crushing device according to claim 2, characterized in that: The slow-down device (4) includes two double-tube plates (41), four spring rods (42), four rubber pads (43) and four abutting plates (44). The two double-tube plates (41) are fixed at the ends of the two Z-shaped rods (321) close to each other. The four spring rods (42) are respectively fixed in groups of two on the inner walls of the two double-tube plates (41). The four rubber pads (43) are respectively fixed at the bottom surfaces of the telescopic ends of the four spring rods (42). The four abutting plates (44) are respectively fixed in groups of two on the front and back of the female mold (2).

4. A forging press with a workpiece anti-crushing device according to claim 3, characterized in that: The descender (4) further includes four inclined rings (45), two inclined strip plates (46), and two baffle plates (47). The four inclined rings (45) are respectively fixed to the tops of the outer walls of the four spring rods (42). The two inclined strip plates (46) are respectively fixed to the sides of the four inclined rings (45) away from each other. Two circular holes are formed at the tops of the sides of the two inclined strip plates (46) away from each other. The two baffle plates (47) are respectively fixed to the bottoms directly opposite to the two inclined strip plates (46).

5. The forging press with a workpiece anti-crushing device according to claim 4, characterized in that: The top surfaces of the four abutting plates (44) are all on the movement trajectories of the four rubber pads (43). The two inclined strip plates (46) are located on the front and back of the female die (2).

6. The forging press with a workpiece anti-crushing device according to claim 5, characterized in that: The adjusting device (5) includes four straight rods (51), two circular shells (52), two vertical columns (53), and a number of counterweight rings (54). The four straight rods (51) are respectively fixed to the inner walls of the two circular holes of the two inclined strip plates (46). The two circular shells (52) are respectively fixed to the directly opposite sides of the four straight rods (51). The bottom surfaces of the two circular shells (52) are in contact with the top surface of the pressing plate (313). The two vertical columns (53) are respectively fixed to the inner bottoms of the two circular shells (52). A number of the counterweight rings (54) are respectively sleeved on the outer walls of the two vertical columns (53).

7. A forging press with a workpiece anti-crushing device according to claim 6, characterized in that: The adjusting device (5) further includes two circular covers (55), two compression springs (56), and two compression rings (57). The two circular covers (55) are respectively fixed to the tops of the outer walls of the two circular shells (52). The two compression springs (56) are fixed to the inner tops of the two circular covers (55). The two compression rings (57) are respectively fixed to the ends of the two compression springs (56) away from the two circular covers (55).

8. A forging press with a workpiece anti-crushing device according to claim 7, characterized in that: A number of the counterweight rings (54) are stacked layer by layer inside the two circular shells (52). The two compression rings (57) are respectively arranged above the stacked counterweight rings (54).

9. A method for using a forging press with a workpiece anti-crushing device, which uses a forging press with a workpiece anti-crushing device as described in claim 8, characterized in that: It includes the following steps: S1. The staff clamps the calcined metal plate into the cavity of the female die (2). S2. Start the jack (312) on the cross frame (311). The telescopic end of the jack (312) drives the pressing plate (313) to move downward. S3. The inner groove ring block (316) limits the distance that the pressing plate (313) presses down, so that when the pressing plate (313) enters the cavity of the female die (2) to press the metal plate, the pressing plate (313) will not overpress the metal plate. S4. The sponge ring (324) evenly applies lubricating oil on the screw rod (315), so that the inner groove ring block (316) can move downward more smoothly on the screw rod (315). S5. The spring force in the spring rod (42) slows down the downward pressing speed of the pressing plate (313), so that the pressing plate (313) will not quickly punch onto the surface of the metal plate. S6. During the downward movement of the baffle plate (47), the baffle plate (47) blocks the sputtering of sparks during forging. S7. The gravity of the counterweight rings (54) is applied to the pressing plate (313), so that the downward pressing force of the pressing plate (313) is more uniform. S8. The pressure ring (57) tightly abuts above the stacked counterweight rings (54), so that the counterweight rings (54) will not shake in the circular shell (52) during the downward pressing process.

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