Automatic punching device and method for hot-state annular die forging forming blank

Abstract

The invention discloses an automatic punching device for a hot-state annular die forging forming blank. The automatic punching device comprises a machine body, a punching die, a centering mechanism, a lifting mechanism and a demolding mechanism, wherein the centering mechanism is arranged on the machine body and used for positioning a die forging below the punching die; the lifting mechanism is arranged on the machine body and used for controlling the punching die to ascend and descend; the automatic punching device for the hot-state annular die forging forming blank is compact in structure, uniform in stress and easy to operate, single-cylinder pressing is achieved, the automatic punching requirement of the hot-state annular die forging forming blank can be met, the punching machining efficiency can be improved, and the manufacturing cost can be reduced. The invention further discloses an automatic punching method for the hot-state annular die forging forming blank.

Description

Technical Field

[0001] The invention belongs to the technical field of die forging blank making by hydraulic press, and in particular relates to an automatic punching device and method for hot annular die forging forming blank. Background Art

[0002] Ring die forgings are key components for railway vehicles and carriages. During the manufacturing process of die forgings, the pressed blanks need to be punched. Since a single multi-station hydraulic press cannot meet the punching requirements of die forgings, the die forgings need to be bored, which is time-consuming, labor-intensive, inefficient and has high manufacturing costs.

[0003] A Chinese patent with application number 202410237263.8 discloses a high-pressure automatic punching device for bent pipes, which relates to a technical field related to bent pipe punching, and includes an operating table and a bending mechanism arranged on the operating table, wherein the bending mechanism includes a first clamping block and a second clamping block, and the second clamping block is integrated with a punching mechanism. When the first clamping block and the second clamping block are connected to clamp the pipe body, the punching mechanism punches the clamped part of the pipe body, and also includes: a hole processing mechanism, which includes an inner abutment and an outer abutment; after the punching mechanism punches a hole on the surface of the pipe body, the inner abutment abuts against the inner wall of the pipe body, and the outer abutment abuts against the outer wall of the pipe body, and the inner abutment and the outer abutment jointly apply pressure to press the part of the pipe body around the hole into a flat shape.

[0004] The Chinese patent application number 202311816380.1 discloses an automatic coil punching device, including a machine body, a punching and cutting machine and a feeding roller, including: a stacking member: two racks are fixedly provided at the side end of the machine body, and two sets of scaffolding members for stacking the coils are slidably provided on the outer sides of the two racks; a feeding member: a supporting plate for pushing the coils is slidably provided between the two racks; a circulating member: a first push plate is horizontally slid on the outer side of the rack, and a second push plate is horizontally slid on the inner side of the rack. In the present invention, after the metal coil is punched and cut, it will be transferred by the feeding roller to the gap formed by the two racks, and then fall onto the support rod. As the punching and cutting machine continuously punches and cuts the metal coil, the support rod will continuously move downward under the action of the traction member, so as to realize the vertical stacking of the cut metal coils, and at the same time ensure the safe acceptance of the metal coils, it is convenient for the staff to collect the piles of the processed materials.

[0005] A Chinese patent with application number 202322411750.5 discloses an automatic punching device for a metal shell, comprising a frame, a support plate and a limit mechanism, wherein the frame is provided with a punching mechanism; the support plate is arranged on the frame and is arranged opposite to the punching mechanism, and a module is arranged on the support plate, wherein a channel is opened on the module for a workpiece to pass through, and an opening is also opened on the module for the punching mechanism to punch; the limit mechanism comprises a mounting assembly and a limit block, wherein the limit block is movably arranged on the mounting assembly and has a first position and a second position, wherein when the limit block is in the first position, the limit block extends into the opening of the workpiece to limit the workpiece from moving in a first direction, and when the limit block is in the second position, the limit block is on the surface of the workpiece, and the workpiece can move in the first direction and the second direction; wherein the first direction and the second direction are collinear and in opposite directions.

[0006] It is desirable to provide an improved automatic punching device and method for hot annular die forging forming blanks, particularly a solution for improving punching processing efficiency and reducing manufacturing costs. Summary of the invention

[0007] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an automatic punching device for hot annular die forging forming blanks, the purpose of which is to improve the punching processing efficiency.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automatic punching device for hot annular die forging forming blanks, including a machine body, a punching die, a centering mechanism arranged on the machine body and used to position the die forging under the punching die, a lifting mechanism arranged on the machine body and used to control the lifting and lowering of the punching die, and a demolding mechanism arranged on the lifting mechanism.

[0009] The centering mechanism comprises a first centering seat, a second centering seat matched with the first centering seat for clamping the die forging, and a first driving mechanism for controlling the first centering seat to move linearly.

[0010] The first driving mechanism includes a first driver arranged on the body and a first guide rod for guiding the first centering seat, and the first driver is connected to the first centering seat.

[0011] At least two first guide rods are provided.

[0012] The second pair of center seats are connected to the adjustment mechanism, and the second pair of center seats are arranged to be positionally adjustable.

[0013] The adjustment mechanism includes a centering seat adjustment screw connected to the second centering seat and a second guide rod for guiding the second centering seat. The centering seat adjustment screw is threadedly connected to the centering seat adjustment nut seat arranged on the body.

[0014] The lifting mechanism comprises a second driver arranged on the machine body and a third guide rod used for guiding and connected to the demoulding mechanism, and the second driver is connected to the punching die.

[0015] The demolding mechanism includes a first stripping plate connected to the third guide rod, a second stripping plate located below the first stripping plate and used to apply pressure to the die forging, and an elastic element connected to the first stripping plate and the second stripping plate, and the punching die passes through the second stripping plate.

[0016] A plurality of elastic elements are provided.

[0017] The present invention also provides a method for automatically punching hot annular die forging blanks, which uses the automatic punching device for hot annular die forging blanks and comprises the following steps:

[0018] S1, placing the die forging on the punching table on the machine body;

[0019] S2, positioning the die forging under the punching die by the centering mechanism;

[0020] S3, the lifting mechanism drives the punching die to descend to punch the die forging;

[0021] S4, the lifting mechanism drives the punching die to rise, and the demoulding mechanism performs demoulding.

[0022] The automatic punching device for hot annular die forgings of the present invention has a compact structure, single-cylinder pressing, uniform force, and simple operation, can meet the automatic punching requirements for hot annular die forgings, can improve punching processing efficiency, and reduce manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] This specification includes the following drawings, which show the following contents:

[0024] Figure 1 The automatic punching device for hot annular die forging forming blank of the present invention is a schematic diagram of the working Figure 1 ;

[0025] Figure 2 The automatic punching device for hot annular die forging forming blank of the present invention is a schematic diagram of the working Figure 2 ;

[0026] Figure 3 The automatic punching device for hot annular die forging forming blank of the present invention is a schematic diagram of the working Figure 3 ;

[0027] Markings in the figure are: 1. Machine body; 2. Second drive; 3. Third guide rod; 4. First drive; 5. First guide rod; 6. First centering seat; 7. Die forging; 8. Elastic element; 9. First stripper plate; 10. Upper connecting piece; 11. Lower connecting piece; 12. Second guide rod; 13. Centering seat adjusting nut; 14. Centering seat adjusting screw; 15. Hydraulic station; 16. Punching die; 17. Second stripper plate; 18. Second centering seat. DETAILED DESCRIPTION

[0028] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solution of the present invention and facilitating its implementation.

[0029] It should be noted that, in the following embodiments, the “first”, “second” and “third” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are merely for the convenience of description.

[0030] In the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "work surface", "horizontal", "top", "bottom", "inside", "outside", "one side", "the other side" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0031] like Figures 1 to 3 As shown, the present invention provides an automatic punching device for hot annular die forging forming blanks, comprising a machine body 1, a punching die 16, a centering mechanism arranged on the machine body 1 and used for positioning the die forging under the punching die 16, a lifting mechanism arranged on the machine body 1 and used for controlling the lifting and lowering of the punching die 16, and a demolding mechanism arranged on the lifting mechanism.

[0032] Specifically, if Figures 1 to 3As shown, a punching table for placing die forgings is provided on the machine body 1. The punching table is a horizontal plane, and the die forgings are annular structures. Die forgings are key components for the operation of railway vehicles, carriages, etc. The die forgings are placed on the punching table in a horizontal state, and the punching table is located below the punching die 16. The hot-formed die forgings are placed on the transport roller, and the transport roller transports the die forgings to the punching table. When the detection element detects that the die forgings have reached the designated position on the punching table, the centering mechanism positions the die forgings below the punching die 16, and then the lifting mechanism starts to work, so that the punching die 16 moves downward quickly, and the punching die 16 is used to quickly punch the die forgings below. After punching, the punching die 16 is quickly retracted to complete the automatic punching process.

[0033] like Figures 1 to 3 As shown, the centering mechanism includes a first centering seat 6, a second centering seat 18 that cooperates with the first centering seat 6 to clamp the die forging, and a first driving mechanism for controlling the first centering seat 6 to move linearly. The first centering seat 6 and the second centering seat 18 are arranged relative to each other, and the end of the first centering seat 6 has a first positioning groove for the die forging to be embedded, and the first positioning groove is preferably a V-shaped groove. The first positioning groove is formed open at the end face of the first centering seat 6, and the die forging is embedded and positioned, and the two inner side surfaces at the first positioning groove are in contact with the outer cylindrical surface of the die forging. The end of the second centering seat 18 also has a second positioning groove for the die forging to be embedded, and the second positioning groove is preferably a V-shaped groove. The second positioning groove is formed open at the end face of the second centering seat 18, and the die forging is embedded and positioned, and the two inner side surfaces at the second positioning groove are in contact with the outer cylindrical surface of the die forging. The first centering seat 6 and the second centering seat 18 are in close contact with the outer cylindrical surface of the middle die forging, clamping the die forging, with high reliability, and the die forging is not easy to move, ensuring the accuracy of punching.

[0034] like Figures 1 to 3 As shown, the first driving mechanism includes a first driver 4 provided on the machine body 1 and a first guide rod 5 for guiding the first centering seat 6. The first driver 4 is a retractable component, the first driver 4 is connected to the first centering seat 6, and at least two first guide rods 5 are provided. The first guide rod 5 is connected to the first centering seat 6, and a guide hole for the first guide rod 5 to pass through is provided on the machine body 1. The first guide rod 5 guides the first centering seat 6 to move linearly in the horizontal direction. The first driver 4 realizes the linear movement of the first centering seat 6 in the horizontal direction by telescoping, thereby realizing the clamping and release of the die forging.

[0035] like Figures 1 to 3 As shown, in this embodiment, two first guide rods 5 are provided, and the first driver 4 is located between the two first guide rods 5 , and the first driver 4 is a cylinder.

[0036] like Figures 1 to 3As shown, the second centering seat 18 is connected to the adjustment mechanism, and the second centering seat 18 is arranged to be position-adjustable. By adjusting the initial position of the second centering seat 18, the positioning requirements of die forgings of different specifications and the positioning requirements of different punching positions on the die forgings can be met, so that the positions to be punched on the die forgings can be accurately positioned directly below the punching die 16.

[0037] like Figures 1 to 3 As shown, the adjustment mechanism includes a centering seat adjustment screw 14 connected to the second centering seat 18 and a second guide rod 12 for guiding the second centering seat 18. The centering seat adjustment screw 14 is threadedly connected to the centering seat adjustment nut 13 fixedly arranged on the machine body 1. At least two second guide rods 12 are provided. The second guide rods 12 are connected to the second centering seat 18. A guide hole for the second guide rod 12 to pass through is provided on the machine body 1. The second guide rod 12 guides the second centering seat 18 to move linearly in the horizontal direction. The length direction of the centering seat adjustment screw 14 is parallel to the length direction of the second guide rod 12. By screwing the centering seat adjustment screw 14, the second centering seat 18 can be controlled to move linearly in the horizontal direction to achieve the position adjustment of the second centering seat 18. The adjustment mechanism has a simple structure and is easy to operate.

[0038] like Figures 1 to 3 As shown, in this embodiment, two second guide rods 12 are provided, and the centering seat adjusting screw rod 14 is located between the two first guide rods 5 .

[0039] like Figures 1 to 3 As shown, the lifting mechanism includes a second driver 2 disposed on the machine body 1 and a third guide rod 3 for guiding and connected to the demoulding mechanism, and the second driver 2 is connected to the punching die 16. The third guide rod 3 and the second driver 2 are vertically arranged, at least two third guide rods 3 are arranged, and a guide hole for the third guide rod 3 to pass through is arranged on the machine body 1, and the third guide rod 3 guides the demoulding mechanism to move linearly in the vertical direction. The second driver 2 is a retractable component, and the second driver 2 realizes the linear movement of the punching die 16 along the setting direction by retracting.

[0040] like Figures 1 to 3 As shown, in this embodiment, two third guide rods 3 are provided, the second driver 2 is located between the two third guide rods 3 , the second driver 2 is an oil cylinder, and the piston rod of the second driver 2 is connected to the punching die 16 .

[0041] like Figures 1 to 3As shown, the demoulding mechanism includes a first stripping plate 9 connected to the third guide rod 3, a second stripping plate 17 located below the first stripping plate 9 and used to apply pressure to the die forging, and an elastic element 8 connected to the first stripping plate 9 and the second stripping plate 17, and the punching die 16 passes through the second stripping plate 17. A plurality of elastic elements 8 are provided, and the elastic element 8 is a cylindrical helical spring and a compression spring. The upper end of the elastic element 8 is connected to the first stripping plate 9 through an upper connecting member 10, and the lower end of the elastic element 8 is connected to the second stripping plate 17 through a lower connecting member 11, and the elastic element 8 applies a downward elastic force to the second stripping plate 17. The first stripping plate 9 is connected to the piston rod of the second driver 2 and the third guide rod 3, and a through hole is provided on the second stripping plate 17 for the punching die 16 to pass through. The punching die 16 is located between the two third guide rods 3, and all elastic elements 8 are symmetrically distributed on both sides of the punching die 16.

[0042] When the second driver 2 drives the punching die 16 to move downward, the punching die 16 contacts the die forging to perform punching, the second stripping plate 17 contacts the die forging below, and the elastic element 8 is compressed. After the punching is completed, the second driver 2 drives the punching die 16 to lift, and the second stripping plate 17 uses the spring reaction force of the elastic element 8 to perform demolding. The second stripping plate 17 applies pressure to the die forging, so that the punching die 16 can be effectively separated from the die forging.

[0043] like Figures 1 to 3 As shown, the machine body 1 is an integrally welded C-shaped structure, and a hydraulic station 15 is arranged outside the machine body 1 , and the hydraulic station 15 provides a power source for the first driver 4 and the second driver 2 .

[0044] The present invention also provides a method for automatically punching hot annular die forging blanks, which uses the automatic punching device for hot annular die forging blanks of the above structure and includes the following steps:

[0045] S1, placing the die forging on the punching table on the machine body 1;

[0046] S2, positioning the die forging under the punching die 16 by the centering mechanism;

[0047] S3, the lifting mechanism drives the punching die 16 to descend, and punches the die forging;

[0048] S4, the lifting mechanism drives the punching die 16 to rise, and the demoulding mechanism performs demoulding processing, so that the punching die 16 can be effectively separated from the die forging.

[0049] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above-mentioned concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. Automatic punching device for hot annular die forging blanks, characterized in that: The invention comprises a machine body, a punching die, a centering mechanism arranged on the machine body and used for positioning the die forging under the punching die, a lifting mechanism arranged on the machine body and used for controlling the lifting of the punching die, and a demoulding mechanism arranged on the lifting mechanism.

2. The automatic punching device for hot annular die forging blank according to claim 1 is characterized in that: The centering mechanism comprises a first centering seat, a second centering seat matched with the first centering seat for clamping the die forging, and a first driving mechanism for controlling the first centering seat to move linearly.

3. The automatic punching device for hot annular die forging blank according to claim 2 is characterized in that: The first driving mechanism includes a first driver arranged on the body and a first guide rod for guiding the first centering seat, and the first driver is connected to the first centering seat.

4. The automatic punching device for hot annular die forging blank according to claim 3 is characterized in that: At least two first guide rods are provided.

5. The automatic punching device for hot annular die forging blank according to any one of claims 2 to 4, characterized in that: The second pair of center seats are connected to the adjustment mechanism, and the second pair of center seats are arranged to be positionally adjustable.

6. The automatic punching device for hot annular die forging blank according to claim 5, characterized in that: The adjustment mechanism includes a centering seat adjustment screw connected to the second centering seat and a second guide rod for guiding the second centering seat. The centering seat adjustment screw is threadedly connected to the centering seat adjustment nut seat arranged on the body.

7. The automatic punching device for hot annular die forging blank according to any one of claims 1 to 6, characterized in that: The lifting mechanism comprises a second driver arranged on the machine body and a third guide rod used for guiding and connected to the demoulding mechanism, and the second driver is connected to the punching die.

8. The automatic punching device for hot annular die forging blank according to claim 7, characterized in that: The demolding mechanism includes a first stripping plate connected to the third guide rod, a second stripping plate located below the first stripping plate and used to apply pressure to the die forging, and an elastic element connected to the first stripping plate and the second stripping plate, and the punching die passes through the second stripping plate.

9. The automatic punching device for hot annular die forging blank according to claim 8, characterized in that: A plurality of elastic elements are provided.

10. Automatic punching method for hot annular die forging blank, characterized in that: The automatic punching device for hot annular die forging forming blanks according to any one of claims 1 to 9 is adopted, and comprises the steps of: S1, placing the die forging on the punching table on the machine body; S2, positioning the die forging under the punching die by the centering mechanism; S3, the lifting mechanism drives the punching die to descend to punch the die forging; S4, the lifting mechanism drives the punching die to rise, and the demoulding mechanism performs demoulding.

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