Heavy duty die testing press

Abstract

The present application discloses a kind of heavy die test press machines, including body frame, main oil cylinder, body frame is made of lower crossbeam, column and upper crossbeam.Key features include slider, lifting cylinder, motor, friction stopper and moving platform.Slider includes rotary slider, pressurized slider and side slider, wherein pressurized slider is installed in frame by guide rail, connected with main oil cylinder.Side slider moves up and down through guide assembly and guide rail, and double-side lifting cylinder drives its action.Rotary slider connects two side sliders through rotary shaft, and motor is installed on side slider, rotary motion is realized through driving gear and rotary gear.Moving platform is installed on lower crossbeam, used for installing lower die.Through innovative double-side synchronous drive and gear set driving, the test press machine improves system stability, rotary load capacity and test function, and provides significant technical advantage for large, heavy die test requirements.

Description

Technical Field

[0001] This invention belongs to the field of press technology, and particularly relates to a heavy-duty mold testing press. Background Technology

[0002] The rapid development of my country's aerospace and automotive industries has driven the trend towards larger and heavier forming dies. This necessitates rigorous pre-testing and grinding of forming dies before they are put into use. With the increasing weight of dies, existing grinding and testing presses face higher demands. Especially for ultra-heavy dies, only by rotating the upper die via a central rotation can the inertia of the heavy die be overcome, thus meeting its grinding requirements.

[0003] However, existing die-fitting presses have some significant technical shortcomings. Firstly, while they can perform center rotation die-fitting, they lack the nominal pressure required for trial production, limiting their application in the trial molding stage. Secondly, while existing trial molding presses possess the nominal pressure for trial production, they cannot perform rotary die-fitting, a limitation particularly pronounced for ultra-large and ultra-heavy molds, thus restricting their ability to handle heavy-duty mold testing.

[0004] The main limitation of existing die-spinning presses lies in their ability to only handle ordinary dies with an upper die weight of no more than 20 tons, while failing to handle ultra-large and ultra-heavy dies. This restricts the applicability of die-spinning presses in practical applications, especially given the rapid development in the aerospace and automotive industries, where the demand for testing heavy dies is increasing rapidly.

[0005] Therefore, the main deficiency of existing technologies lies in the narrow functionality between grinding and fitting presses and trial molding presses, which cannot fully meet the testing needs of ultra-heavy molds. Against this backdrop, it is necessary to design and develop a new heavy-duty mold testing press to overcome the shortcomings of existing technologies, improve testing efficiency and accuracy, and meet the development needs of larger and heavier forming molds. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention provides a heavy-duty mold testing press that aims to solve the functional limitation problem between existing grinding presses and mold testing presses.

[0007] This invention is implemented as follows: a heavy-duty mold testing press includes a machine frame and a main hydraulic cylinder. The machine frame includes a lower crossbeam, a column, and an upper crossbeam. The press is characterized by including a slider, a lifting hydraulic cylinder, a motor, a friction stop, and a moving platform. The slider includes a rotary slider, a pressure slider, and a side slider. The pressure slider is installed within the press machine frame via a pressure slider guide rail, and its upper part is connected to the piston rod of the main hydraulic cylinder mounted on the upper crossbeam. The side slider cooperates with the side slider guide rail via a side slider guide assembly and moves up and down. The system includes: two sets of lifting cylinders installed on both sides of the lower crossbeam, which drive the side sliders to move up and down; a rotary slider positioned between the two side sliders, with the left and right sides connected to the two side sliders via rotary shafts; a motor mounted on the left and right side sliders, with a drive gear installed on the motor and a rotary gear installed on the outer side of the side sliders; and the motor driving the rotary sliders to rotate via the meshing drive gear and rotary gear; and a movable platform mounted on the lower crossbeam for mounting the lower mold.

[0008] In the above technical solution, preferably, a friction stop is included. The friction stop is disposed on the outside of the left and right side sliders. The friction stop includes a stop driving component and a stop actuating component. The friction stop is used to prevent the rotary gear from rotating.

[0009] In the above technical solution, preferably, the friction stop includes a bidirectional extension cylinder, a first pin, a swing arm, a second pin, a third pin, a clamping plate, and a friction plate. The bidirectional extension cylinder is the stop driving component, and the clamping plate and friction plate are the stop actuating components. The bidirectional extension cylinder drives the clamping plate to clamp the rotary gear through the swing arm.

[0010] In the above technical solution, preferably, a lubricating oil anti-splash device is included, which includes a scoop-shaped oil baffle, a groove-shaped oil separator structure, and an oil receiving tray; the pressure slider guide rail is provided with a slider guide plate, and the pressure slider is provided with a slider wedge that slides with the slider guide plate; the scoop-shaped oil baffle is installed on the pressure slider and located between the slider guide plate and the slider wedge; the oil receiving tray is installed on the pressure slider and located below the scoop-shaped oil baffle.

[0011] In the above technical solution, preferably, the left and right sides and the lower part of the scoop-shaped oil baffle are bent towards the slider guide plate to form a three-sided bending structure, and the scoop-shaped oil baffle is provided with mounting holes for connecting the slider wedge.

[0012] In the above technical solution, preferably, the lower end face of the pressure slider is provided with a grooved oil separator structure, and the grooved oil separator structure is located at the upper edge of the oil receiving pan.

[0013] In the above technical solution, preferably, the grooved oil separator structure is located at the four corners of the lower end face of the pressurizing slider, forming a right-angled groove structure at the four corners of the pressurizing slider located at the upper edge of the oil receiving pan.

[0014] The oil receiving tray is installed on the pressurized slider, and a vertical drainage groove is provided on the side of the oil receiving tray. An oil collection box is provided below the vertical drainage groove.

[0015] The key innovation of this invention lies in using a dual-sided servo motor reducer-large and small gear sets as the driving mechanism for the rotary slider, which solves a series of problems existing in the prior art and brings significant advantages and effects to the heavy-duty mold testing press.

[0016] Firstly, the synchronous drive of the dual-sided servo motor reducer and gear sets ensures smoother movement of the rotary slider, improving overall system stability and significantly enhancing rotational load capacity. Compared to the traditional single-sided drive rotation method, this dual-sided synchronous drive design greatly improves the system's dynamic performance, making mold rotation smoother during testing and avoiding uneven load problems that may occur with single-sided drive.

[0017] Secondly, compared to worm gear drives, the design using a large and small gear set overcomes a series of shortcomings of traditional structures. Worm gear drives suffer from low efficiency, poor material mechanical properties, and easy wear, while the large and small gear set drive in this invention effectively improves the rotational load capacity and significantly enhances the center flipping capability. Compared to the worm gear drive structure, the design of this invention significantly increases the weight of the flipping mold, reaching more than 7 times that of the worm gear drive structure, making the testing press perform superiorly when dealing with ultra-large and ultra-heavy molds.

[0018] Furthermore, the testing press of this invention not only realizes the function of upper mold rotation and fitting, but also has the function of nominal pressure trial production required for the mold. This dual-function design makes the testing press more comprehensive in the mold testing process, meeting the needs of the mold fitting stage while also performing nominal pressure trial production, effectively improving the accuracy and efficiency of testing. This design advantage overcomes the problem of narrow functions of fitting presses and mold testing presses in the prior art, providing a more comprehensive solution for heavy mold testing.

[0019] Therefore, the newly designed heavy-duty mold testing press comprehensively improves system stability, rotational load capacity and testing functions through key innovations such as dual-side synchronous drive and large and small gear sets, bringing significant technical advantages to meet the testing needs of large and heavy molds.

[0020] In summary, the newly designed heavy-duty mold testing press significantly improves performance through innovations such as dual-sided synchronous drive and large and small gear sets. This not only achieves breakthroughs in technology, resulting in smoother mold rotation and stronger load capacity, but also overcomes many shortcomings of traditional worm gear drives. This innovation will drive the advancement of heavy-duty mold testing technology in the aerospace and automotive industries, providing a significant boost to the manufacturing industry in areas such as the production of ultra-large components and the manufacturing of aerospace devices. Therefore, the dual-functional design of the newly designed heavy-duty mold testing press has profound significance for the entire industry, providing a reliable and comprehensive solution for meeting the testing needs of large and heavy molds. Attached Figure Description

[0021] Figure 1 This is a general assembly drawing of a preferred embodiment of the present invention;

[0022] Figure 2 This is a front view of the overall assembly of a preferred embodiment of the present invention;

[0023] Figure 3 This is a top view of the press center rotary slide rotary drive structure according to a preferred embodiment of the present invention;

[0024] Figure 4 This is a structural diagram of the deep U-shaped pressure slider of the press according to a preferred embodiment of the present invention;

[0025] Figure 5 This is a structural diagram of a friction stopper according to a preferred embodiment of the present invention;

[0026] Figure 6 This is a structural diagram of a press lubricating oil anti-splash device according to a preferred embodiment of the present invention;

[0027] Figure 7 This is a structural diagram of the scoop-shaped oil baffle in the lubricating oil anti-splash device of a preferred embodiment of the present invention;

[0028] Figure 8 This is a diagram of the trough-type oil separator structure in the lubricating oil anti-splash device of a preferred embodiment of the present invention;

[0029] Figure 9 This is a structural diagram of the oil receiving tray in the lubricating oil anti-splash device of a preferred embodiment of the present invention. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] To address the functional limitations of existing die-setting and testing presses, this invention provides a heavy-duty die testing press. Through key innovations such as dual-sided synchronous drive and large / small gear sets, this heavy-duty die testing press comprehensively improves system stability, rotational load capacity, and testing functions, bringing significant technical advantages to meet the testing needs of large and heavy-duty dies. To further illustrate the structure of this invention, a detailed description is provided below in conjunction with the accompanying drawings:

[0032] Please see Figures 1-4 A heavy-duty mold testing press includes a robust press frame consisting of a lower crossbeam 16, a column 3, and an upper crossbeam 9 connected by pre-tensioning rods 10, ensuring the rigidity and stability of the main frame. The press frame is a pre-stressed frame, exhibiting better overall rigidity retention and fatigue durability.

[0033] The sliders include three types: rotary slider 6, pressure slider 8, and side slider 13.

[0034] The pressure slide 8 is installed inside the press frame via the pressure slide guide 7. The upper part of the pressure slide 8 is connected to the piston rod of the main cylinder 11, which is mounted on the upper crossbeam 9. The pressure slide has a deep U-shaped structure with guide seats on the front and rear sides. The pressure slide guide extends from the column to the top of the upper crossbeam, forming a through-type guide rail structure between the column and the upper beam. When the pressure slide returns to its upper limit position, the pressure slide and the upper crossbeam coincide in height. At this time, the upper crossbeam is located inside the U-shaped cavity of the deep U-shaped slide. This ensures that the slide has sufficient rigidity and guiding height, and provides sufficient space for the slide to flip, while significantly reducing the height of the press body.

[0035] Two side sliders 13 are installed symmetrically on the left and right sides of the press body, between the front and rear columns. The side sliders 13 move up and down via a side slider guide assembly 20 and a side slider guide rail 12. Two lifting cylinders 4 are installed on both sides of the lower crossbeam 16, located below the side sliders 13. The piston rods of the lifting cylinders 4 are connected to the side sliders 13, and the up-and-down movement of the piston rods drives the side sliders 13. The guide assembly for the up-and-down movement of the side sliders is a C-shaped guide assembly structure. The C-shaped guide assembly has adjustable wedge-shaped guide plates on three sides. This structure gives the side sliders strong resistance to eccentric loads during up-and-down movement, resisting the eccentric load force caused by the overturning slider.

[0036] The rotary slider 6 is located between the left and right side sliders 13. Rotary shafts 18 are fixedly installed on the left and right sides of the rotary slider 6, and are connected to the left and right side sliders 13 through the rotary shafts 18. The rotary shafts 18 can rotate freely around the axis within the side sliders 13.

[0037] After the rotary shafts 18 on the left and right sides of the rotary slider 6 pass through the side slider 13, rotary gears 15 are respectively installed at the ends of the rotary shafts 18 on the left and right sides.

[0038] The motor is a servo motor reducer. There are two sets of servo motor reducers 14, which are mounted on the side slider 13 in a symmetrical arrangement. A drive gear 17 is mounted on the output shaft of the servo motor reducer 14. The drive gear 17 meshes with the rotary gear 15 to form a gear set. The gear set is a herringbone tooth structure, which has the advantages of high meshing accuracy and good force distribution.

[0039] The rotary motion of the slewing slider is driven by a dual-sided servo motor reducer and a large and small gear set. Compared with single-sided drive, the dual-sided synchronous drive motion is smoother and has a stronger rotary load capacity. Compared with worm gear drive, the large and small gear set drive overcomes the defects of low transmission efficiency of worm gear, insufficient rigidity of worm gear copper material leading to limited rotary load capacity, and easy wear of worm gear. The center flipping capability is greatly improved. The weight of the flippable mold is more than 7 times that of the worm gear drive rotary structure. The weight of the flippable upper mold of the worm gear drive rotary structure is usually no more than 20 tons, while the weight of the flippable upper mold of the large and small gear set drive rotary structure can usually be more than 150 tons.

[0040] The press has the dual functions of heavy-duty mold upper die rotation grinding and fitting, and mold testing by trial production at the required nominal pressure. It overcomes the problems of traditional grinding and fitting presses, which can only realize upper die rotation grinding and fitting but do not have the function of trial production at the required nominal pressure, and traditional mold testing presses, which have the function of trial production at the required nominal pressure but cannot realize upper die rotation grinding and fitting.

[0041] There are two sets of friction stoppers 19, installed on the outer sides of the left and right side sliders 13 respectively. Please refer to [link / reference]. Figure 5 The single friction stopper 19 consists of a bidirectional extension cylinder 19-1, a first pin 19-2, a swing arm 19-3, a second pin 19-4, a third pin 19-5, a clamping plate 19-6, and a friction plate 19-7. The bidirectional extension cylinder 19-1 has piston rods at both ends. When the piston rods of the bidirectional extension cylinder 19-1 extend, they drive the first pin 19-2, which is symmetrically arranged on both sides, to push the swing arm 19-3 to rotate around the second pin 19-4. This, in turn, drives the third pin 19-5 and the clamping plate 19-6 connected to it to move inward. The friction plate 19-7 is installed on the inner side of the clamping plate 19-6. Thus, under the drive of the bidirectional extension cylinder 19-1, the rotary gear 15 can be frictionally clamped and stopped. In a heavy-duty mold testing press, when the upper mold mounted on the bottom surface of the rotary slide is rotated 180 degrees with its bottom surface facing upwards, the friction stoppers arranged on the left and right sides of the press body can lock the rotary gear, allowing personnel to easily enter the upper mold to inspect and grind it.

[0042] The movable table 1 is installed on the lower crossbeam 16 and can be driven by its own power source to move in and out of the press. The lower mold 2 is fixed on the movable table 1 and can move in and out of the press with the movable table 1.

[0043] Please see Figures 6-9 The lubricating oil anti-splash device is installed below the pressure slider 8 and the pressure slider guide rail 7, and consists of a scoop-shaped oil baffle 23, a grooved oil separator structure 25, an oil receiving tray 26, and an oil collection box 27. The scoop-shaped oil baffle 23 has a three-sided bending structure (left, right, and bottom), with a sloping bend at the bottom. The scoop-shaped oil baffle 23 is installed on the pressure slider 8 and clamped between the slider guide plate 22 and the slider wedge 24. The sloping bend at the bottom of the scoop-shaped oil baffle 23 faces the slider guide plate 22, i.e., the column 3. The grooved oil separator structure 25 is formed by machining oil separators with a width of ≥10mm and a depth of ≥10mm at the four corners of the bottom surface of the pressure slider 8 and at the installation position of the guide wedge. The direction of the oil separator is consistent with the shape of the four corners of the bottom surface of the pressure slider 8. The grooved oil separator structure 25 isolates the slider guide assembly, which consists of slider guide plate 22 and slider wedge 24, from the main body of the pressure slider 8, thus preventing the leakage of lubricating oil from the guide plate wedge from overflowing to the lower surface of the pressure slider 8. The oil receiving tray 26 is installed on the outside of the grooved oil separator structure 25 at the four corners of the bottom surface of the pressure slider 8, and is isolated from the slider guide assembly by the grooved oil separator structure 25.

[0044] The central rotation function is implemented as follows: The rotation of the press's rotary slide block 6 is driven by two servo motor reducers 14 arranged on both sides of the press. The two servo motor reducers 14 drive their respective drive gears 17 to drive the rotary gears 15 on both sides to rotate synchronously, which in turn drives the rotary slide block 6 to rotate through the rotary shafts 18 on the left and right sides. When the upper mold mounted on the bottom surface of the rotary slide block 6 is rotated 180 degrees with its bottom surface facing upwards, the friction stoppers 19 arranged on the left and right sides of the press body lock the rotary gears 15, allowing personnel to easily enter the upper mold for inspection and grinding.

[0045] The mold testing function is implemented as follows: A lower mold 2 is installed on a movable platform 1. The movable platform 1 is moved into the press. An upper mold 5 is installed below the rotary slider 6. The workpiece blank to be pressed is placed into the lower mold 2. The lifting cylinder 4 drives the side slider 13, which in turn drives the rotary slider 6 to move downward. When the upper mold 5 and the lower mold 2 are initially in contact, the lifting cylinder 4 stops moving downward, and the rotary slider 6 and the upper mold 5 stop moving downward. At this time, the piston rod of the main cylinder 11 installed on the upper crossbeam 9 drives the pressure slider 8 to start moving downward. When the lower plane of the pressure slider 8 is in contact with the upper plane of the rotary slider 6, the two move downward synchronously, realizing the mold closing of the upper mold 5 and the lower mold 2 and pressing the workpiece. The main cylinder 11 can provide the nominal pressure required by the mold for workpiece forming. The mold can be judged as qualified and whether it needs to be re-grinded by detecting the forming quality and dimensional accuracy of the workpiece, thereby realizing the mold testing function.

[0046] The lubricating oil anti-splash function is implemented through a triple protection design. The first layer of protection involves a scoop-shaped oil baffle 23 installed on the pressure slider 8, clamped between the slider guide plate 22 and the slider wedge 24. This prevents most of the lubricating oil from leaking from the slider guide plate 22 towards the slider wedge 24. Instead, the oil flows downwards into the oil receiving tray 26 and then into the oil collection box 27 via the three-sided bending structure of the scoop-shaped oil baffle 23. The second layer of protection prevents any splashing of lubricating oil. The lubricating oil leaks backward through the mounting holes on the scoop-shaped oil baffle 23 to the slider wedge 24, flowing to the bottom surface of the slider wedge 24. At this point, the lubricating oil is blocked by the groove-shaped oil separator structure 25 and flows downward into the oil receiving pan 26, preventing it from overflowing to the lower surface of the pressurized slider 8. Thus, all the lubricating oil flows into the oil receiving pan 26. A third layer of protection: a vertical drainage groove 28 is provided below the oil receiving pan 26 to ensure that the lubricating oil flows from the oil receiving pan 26 along the inner wall of the vertical drainage groove into the oil collection box 27. In this invention, the pressurized slider guide rail is equipped with a lubricating oil anti-splash device. The special structural design of the lubricating oil anti-splash device completely solves the chronic problem of easy leakage and splashing of lubricating oil in the hydraulic press slider guide rail area currently prevalent in the industry.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heavy-duty mold testing press, comprising a frame and a main hydraulic cylinder, wherein the frame includes a lower crossbeam, a column, and an upper crossbeam, characterized in that: Includes slider, lifting cylinder, motor, friction stopper and moving platform; The slider includes a rotary slider, a pressure slider, and a side slider; The pressure slider is installed inside the press frame via a pressure slider guide rail, and the upper part of the pressure slider is connected to the piston rod of the main oil cylinder installed on the upper crossbeam; The side slider moves up and down in conjunction with the side slider guide rail via the side slider guide assembly; Two sets of lifting cylinders are installed on both sides of the lower crossbeam, and the side slider is driven to move up and down through the lifting cylinders. The rotary slider is located between the two side sliders, and the left and right sides of the rotary slider are respectively connected to the two side sliders through a rotary shaft; The motor is mounted on the side sliders on the left and right sides. The motor is equipped with a drive gear, and a rotary gear is mounted on the outside of the side slider. The motor drives the rotary slider to rotate through the meshing drive gear and rotary gear. The movable platform is mounted on the lower crossbeam and is used to install the lower mold. The device includes a friction stop, which is disposed on the outer side of the left and right side sliders. The friction stop includes a stop driving component and a stop actuating component. The friction stop is used to prevent the rotary gear from rotating. The device includes a lubricating oil anti-splash device, which comprises a scoop-shaped oil baffle, a grooved oil separator structure, and an oil receiving tray. The pressure slider guide rail is provided with a slider guide plate, and the pressure slider is provided with a slider wedge that slides with the slider guide plate. The scoop-shaped oil baffle is installed on the pressure slider and located between the slider guide plate and the slider wedge. The oil receiving tray is installed on the pressure slider and located below the scoop-shaped oil baffle. The left and right sides and the lower part of the scoop-shaped oil baffle are bent toward the slider guide plate to form a three-sided bending structure. The scoop-shaped oil baffle is provided with mounting holes for connecting the slider wedge. The lower end face of the pressurizing slider is provided with a grooved oil separator structure, which is located at the upper edge of the oil receiving tray. The grooved oil separator structure is located at the four corners of the lower end face of the pressurizing slider, forming a right-angled groove structure at the four corners of the pressurizing slider, located on the upper edge of the oil receiving pan.

2. The heavy-duty mold testing press according to claim 1, characterized in that: The friction stopper includes a bidirectional extension cylinder, a first pin, a swing arm, a second pin, a third pin, a clamping plate, and a friction plate. The bidirectional extension cylinder is the stop driving component, and the clamping plate and friction plate are the stop actuating components. The bidirectional extension cylinder drives the clamping plate to clamp the rotary gear through the swing arm.

3. The heavy-duty mold testing press according to claim 1, characterized in that: The oil receiving tray is installed on the pressurized slider, and a vertical drainage groove is provided on the side of the oil receiving tray. An oil collection box is provided below the vertical drainage groove.

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