Crankshaft stamping structure

Abstract

The utility model discloses a crankshaft stamping structure which comprises a machine tool. The box type sliding block is connected to the machine tool in a sliding mode. The cylindrical cavity is arranged at one end of the box type sliding block; the sliding disc is connected into the cylindrical cavity in a sliding manner; the crankshaft is in transmission connection with the sliding disc; the overload protection disc is arranged between the sliding disc and the inner bottom of the cylindrical cavity; one end of the overload protection disc is provided with a boss, and the other end is provided with a cavity. And the outline of the outer wall of the boss is the same as that of the inner wall of the concave cavity. Pressure sequentially passes through the sliding disc and the overload protection disc to act on the box type sliding block for stamping, when the pressure is too large, the overload protection disc is broken, the pressure is released, and other structures are prevented from being damaged. The overload protection disc is simple in structure, low in cost and convenient to replace; and the influence of objective factors such as external environment is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of metal forming machine tool technology, and in particular relates to a crankshaft stamping structure. Background Technology

[0002] In modern industrial production, stamping technology is widely used in many fields such as automobiles, electronics, and aerospace due to its significant advantages, including high efficiency, energy saving, high material utilization, and the ability to process complex-shaped parts. Stamping drive methods are generally divided into three main categories: hydraulic, crankshaft-connecting rod, and a combination of hydraulic and crankshaft-connecting rod systems. Each of these three drive methods has its own advantages and disadvantages. In the crankshaft-connecting rod system, the crankshaft, as a key transmission component in the stamping equipment, directly affects the overall operating effect and processing quality of the stamping equipment due to the rationality of its structural design and the quality of its performance.

[0003] Chinese patent document CN109550825A discloses a slider mechanism for a closed-type single-point press, including a connecting rod, a ball-end screw, a cylinder, a brake motor, and a slider body. The connecting rod is sleeved on the crankshaft of the press via a bearing bush. The ball-end screw is connected to the hollow part of the connecting rod, and an oil level indicator is provided on one side of the connecting rod. A worm gear is sleeved on the ball-end screw, and the worm gear is connected to a worm drive. A spherical cap, a square cover plate, a dust cover, and a sealing cap are also fixed on the worm gear. The cylinder body is fixed to the outside of the sealing cap and the ball cup by pins, and an adapter joint is provided on one side of the cylinder body. The brake motor is fixed to the rear end face of the slider body. In this slider mechanism, the connecting rod, ball-end screw, cylinder, and brake motor are all installed in the slider body and fixed inside the press by the slider body, realizing overall disassembly and maintenance. Moreover, the cylinder body is connected to the pneumatic components inside the press through the adapter joint, realizing a hydraulic overload protection design for the slider mechanism, ensuring stable and reliable operation and improving the stamping accuracy of parts.

[0004] As described in the aforementioned patent, in practical applications, due to insufficient deformation capacity of the pressed metal and the metal volume exceeding the mold cavity volume, enormous reaction forces are generated on the connecting rod and corresponding drive structure. The mechanical structure will bear loads far exceeding design standards. Prolonged exposure to this high pressure can lead to fatigue cracks in these components, and in severe cases, even direct breakage. Excessive pressure can also cause hydraulic pumps, oil pipes, and other components to rupture due to excessive pressure, resulting in hydraulic oil leakage. Furthermore, dedicated large-range pressure sensors for measuring dynamic pressure are expensive, and these sensors are often susceptible to data distortion due to high temperatures in the working environment, failing to accurately provide warnings when pressure exceeds standards. Utility Model Content

[0005] To overcome the technical problems in existing technologies where connecting rods and corresponding drive structures are damaged by excessive pressure, and where large-range pressure sensors for measuring dynamic pressure are expensive and susceptible to distortion due to high temperatures in the working environment, thus failing to provide accurate early warnings, this invention aims to provide a crankshaft stamping structure. By incorporating a sliding disc and an overload protection disc on a box-type slide block used for stamping, pressure is sequentially transmitted to the box-type slide block through the sliding disc and the overload protection disc for stamping. When the pressure exceeds a preset value, the overload protection disc breaks and compresses, causing the sliding disc to slide relative to the box-type slide block, preventing further pressure increase and damage to other structures.

[0006] To achieve the above objectives, this utility model employs the following technical solution: a crankshaft stamping structure, comprising a machine tool; a box-type slider slidably connected to the machine tool; a cylindrical cavity disposed at the end of the box-type slider away from the stamping die, the axis of the cylindrical cavity being parallel to the sliding direction of the box-type slider; a sliding disk slidably connected within the cylindrical cavity; a crankshaft rotatably connected to the machine tool, the crankshaft being drively connected to the sliding disk; and an overload protection disk disposed between the sliding disk and the bottom of the cylindrical cavity; wherein, a boss is provided at the end of the overload protection disk facing the sliding disk; a recess is provided at the end of the overload protection disk facing the bottom of the cylindrical cavity; the outer wall contour of the boss is the same as the inner wall contour of the recess.

[0007] Furthermore, the upper end of the box-type slider is provided with an insertion port that communicates with the bottom of the cylindrical cavity; the insertion port is used to insert the overload protection disc; and the upper end of the box-type slider is detachably connected with a sealing plate for closing the insertion port.

[0008] Specifically, the overload protection disc has a limiting screw hole on its outer periphery; the sealing plate has a waist-shaped through hole that is directly opposite the limiting screw hole; the length direction of the waist-shaped through hole is parallel to the sliding direction of the box-type slider.

[0009] Preferably, the diameter of the cylindrical cavity is equal to the diameter of the overload protection disc; the length of the socket is greater than or equal to the diameter of the overload protection disc.

[0010] The overload protection disc inside the cylindrical cavity can be replaced through the socket, which is simple and convenient. The screw is tightened into the limiting screw hole through the waist-shaped through hole to restrict the rotation of the overload protection disc, prevent the wear of the overload protection disc, and increase stability.

[0011] Furthermore, a crankshaft is rotatably connected to the machine tool; a connecting rod is provided between the crankshaft and the sliding disk; a ball head is provided at one end of the connecting rod facing the sliding disk, and the diameter of the ball head is larger than the diameter of the connecting rod; a spherical cavity is provided at one end of the sliding disk away from the overload protection disk; a limiting ring is provided on the box-type slider around the connecting rod; the limiting ring is used to make the outer wall of the ball head abut against the inner wall of the spherical cavity.

[0012] Specifically, an eccentric shaft is eccentrically disposed in the middle of the crankshaft; an adjusting tube is rotatably connected to the outer circumference of the eccentric shaft; and the connecting rod is threadedly connected inside the adjusting tube.

[0013] Specifically, the adjusting tube has a notch at one end near the connecting rod; an arc-shaped pressure block that abuts against the outer wall of the connecting rod is detachably connected inside the notch; and a plurality of array holes evenly distributed along the circumferential direction are provided on the outer periphery of the connecting rod, the array holes being located on the side of the adjusting tube facing the ball head.

[0014] Depending on the specific processing conditions, the connecting rod is rotated to make it slide relative to the adjusting tube, thereby adjusting the length and increasing adaptability.

[0015] Furthermore, a perforated plate is provided at one end of the box-type slider facing the stamping die; a mounting base is detachably connected to the perforated plate; and a pressure column is provided on the mounting base.

[0016] Specifically, a first support plate is horizontally arranged on the perforated plate at the lower end of the mounting base; a second support plate is horizontally arranged at the lower part of the mounting base; and a plane is provided at the lower end of the pressure column that abuts against the upper end of the second support plate.

[0017] Specifically, an auxiliary hydraulic cylinder is provided on the side of the machine tool away from the box-type slide block of the stamping die; an auxiliary pressure column is provided on the upper moving end of the auxiliary hydraulic cylinder; the auxiliary pressure column can selectively stamp the metal in the stamping die.

[0018] Metal is stamped in a stamping die. Due to the limited deformation capacity of the metal and the friction of the stamping die, the pressure is greatly reduced on the side of the stamping die away from the pressure column. Insufficient pressure from the pressure column can result in the metal not completely filling the cavity or having voids on the surface, thus reducing the quality of the product.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model uses a sliding disc and an overload protection disc to apply pressure to the box-type slider in sequence through the sliding disc and the overload protection disc. When the pressure is too high, the overload protection disc breaks, the boss is pressed into the cavity, and the sliding disc slides relative to the box-type slider to release the pressure and prevent damage to other transmission or drive structures.

[0021] 2. The overload protection disc used in this utility model has a simple structure, low cost, and is easy to remove from the box-type slider for replacement; it is not affected by external environmental or other objective factors, and is stable and reliable; and by controlling the thickness of the overload protection disc, the maximum allowable impact force can also be controlled.

[0022] 3. This utility model also includes an auxiliary hydraulic cylinder. When the pressure provided by the crankshaft is insufficient or the processing requirements are high, the auxiliary pressure column is pressed into the stamping die to stamp the metal again or simultaneously, thereby improving the product processing quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 3 This is a schematic diagram of the crankshaft structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the box-type slider of this utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the box-type slider of this utility model;

[0028] Figure 6 This is an exploded structural diagram of the present invention.

[0029] In the diagram: 1. Machine tool; 2. Crankshaft; 21. Eccentric shaft; 31. Box-type slider; 311. Cylindrical cavity; 312. Insert; 313. Mesh plate; 314. First support plate; 32. Sliding disc; 321. Spherical cavity; 33. Limiting ring; 34. Mounting base; 341. Second support plate; 35. Pressure column; 351. Plane; 36. Sealing plate; 361. Waist-shaped perforation; 41. Connecting rod; 411. Ball head; 412. Array hole; 42. Adjusting tube; 421. Collar; 43. Arc-shaped pressure block; 5. Overload protection disc; 51. Boss; 52. Concave cavity; 53. Limiting screw hole; 6. Stamping die; 7. Auxiliary hydraulic cylinder. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.

[0033] In this utility model, unless otherwise explicitly specified and limited, terms such as "set" and "install" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] See Figures 1-6 A crankshaft stamping structure includes a machine tool 1 and, from left to right, an auxiliary hydraulic cylinder 7, a stamping die 6, a box-type slider 31, a connecting rod 41, an adjusting tube 42, and a crankshaft 2, which are arranged sequentially on the machine tool 1.

[0035] The box-type slider 31 is slidably connected to the machine tool 1 in the left-right direction; a cylindrical cavity 311 is provided at the end of the box-type slider 31 away from the stamping die 6; the axis of the cylindrical cavity 311 is parallel to the sliding direction of the box-type slider 31; a sliding disk 32 that is slidably connected to the connecting rod 41 is slidably connected inside the cylindrical cavity 311; an overload protection disk 5 is provided between the sliding disk 32 and the bottom of the cylindrical cavity 311.

[0036] The overload protection disc 5 has a boss 51 at one end facing the sliding disc 32; the overload protection disc 5 has a cavity 52 at one end facing the bottom of the cylindrical cavity 311; the outer wall contour of the boss 51 is the same as the inner wall contour of the cavity 52.

[0037] The upper end of the box-type slider 31 is provided with an insertion port 312 communicating with the bottom of the cylindrical cavity 311; the insertion port 312 is used to insert the overload protection disk 5; a sealing plate 36 for closing the insertion port 312 is detachably connected to the upper end of the box-type slider 31. The diameter of the cylindrical cavity 311 is equal to the diameter of the overload protection disk 5; the length of the insertion port 312 is greater than or equal to the diameter of the overload protection disk 5.

[0038] The overload protection disc 5 is provided with a limiting screw hole 53 on its outer periphery; the sealing plate 36 is provided with a waist-shaped through hole 361 that is directly opposite to the limiting screw hole 53; the length direction of the waist-shaped through hole 361 is parallel to the sliding direction of the box-type slider 31.

[0039] The crankshaft 2 is rotatably connected to the machine tool 1; an eccentric shaft 21 is eccentrically provided in the middle of the crankshaft 2; a collar 421 rotatably connected to the outer circumference of the eccentric shaft 21 is provided at one end of the adjusting tube 42 facing the crankshaft 2; the connecting rod 41 is threadedly connected inside the adjusting tube 42.

[0040] The connecting rod 41 has a ball head 411 at one end facing the sliding disk 32, and the diameter of the ball head 411 is larger than the diameter of the connecting rod 41; the sliding disk 32 has a spherical cavity 321 at one end away from the overload protection disk 5; a limiting ring 33 is provided on the box-type slider 31 around the outer periphery of the connecting rod 41; the limiting ring 33 is used to make the outer wall of the ball head 411 abut against the inner wall of the spherical cavity 321; the inner wall of the spherical cavity 321 is provided with multiple oil guide grooves.

[0041] The adjusting tube 42 has a notch at one end near the connecting rod 41; an arc-shaped pressure block 43 that abuts against the outer wall of the connecting rod 41 is detachably connected inside the notch; the connecting rod 41 has a plurality of array holes 412 evenly distributed along the circumferential direction on its outer periphery, and the array holes 412 are located on the side of the adjusting tube 42 facing the ball head 411.

[0042] The box-type slider 31 is provided with a perforated plate 313 at one end facing the stamping die 6; a mounting base 34 is detachably connected to the perforated plate 313; a first support plate 314 is horizontally provided on the perforated plate 313 at the lower end of the mounting base 34; a pressure column 35 is provided on the mounting base 34; a second support plate 341 is horizontally provided at the lower part of the mounting base 34; a plane 351 is provided at the lower end of the pressure column 35 that abuts against the upper end of the second support plate 341.

[0043] The upper part of the auxiliary hydraulic cylinder 7 is provided with an auxiliary pressure column; the auxiliary pressure column can selectively stamp the metal in the stamping die 6.

[0044] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A crankshaft stamping structure, characterized in that: Including organic beds; A box-type slider, which is slidably connected to the machine tool; A cylindrical cavity is provided at the end of the box-type slider away from the stamping die, and the axis of the cylindrical cavity is parallel to the sliding direction of the box-type slider; A sliding disk, which is slidably connected within the cylindrical cavity; A crankshaft is rotatably connected to the machine tool and is drively connected to the sliding disc; an overload protection disc is disposed between the sliding disc and the bottom of the cylindrical cavity; wherein, a boss is provided at one end of the overload protection disc facing the sliding disc; a cavity is provided at one end of the overload protection disc facing the bottom of the cylindrical cavity; the outer wall contour of the boss is the same as the inner wall contour of the cavity.

2. The stamping structure as described in claim 1, characterized in that: The upper end of the box-type slider is provided with an insertion port that communicates with the bottom of the cylindrical cavity; the insertion port is used to insert the overload protection plate; the upper end of the box-type slider is detachably connected with a sealing plate for closing the insertion port.

3. The stamping structure as described in claim 2, characterized in that: The overload protection disc is provided with a limiting screw hole on its outer periphery; the sealing plate is provided with a waist-shaped through hole that is directly opposite the limiting screw hole; the length direction of the waist-shaped through hole is parallel to the sliding direction of the box-type slider.

4. The stamping structure as described in claim 2, characterized in that: The diameter of the cylindrical cavity is equal to the diameter of the overload protection disc; the length of the socket is greater than or equal to the diameter of the overload protection disc.

5. The stamping structure as described in any one of claims 1-4, characterized in that: A crankshaft is rotatably connected to the machine tool; a connecting rod is provided between the crankshaft and the sliding disk; a ball head is provided at one end of the connecting rod facing the sliding disk, and the diameter of the ball head is larger than the diameter of the connecting rod; a spherical cavity is provided at one end of the sliding disk away from the overload protection disk; a limit ring is provided on the box-type slider at the outer periphery of the connecting rod; the limit ring is used to make the outer wall of the ball head abut against the inner wall of the spherical cavity.

6. The stamping structure as described in claim 5, characterized in that: An eccentric shaft is eccentrically mounted in the middle of the crankshaft; an adjusting tube is rotatably connected to the outer circumference of the eccentric shaft; and the connecting rod is threadedly connected inside the adjusting tube.

7. The stamping structure as described in claim 6, characterized in that: The adjusting tube has a notch at one end near the connecting rod; an arc-shaped pressure block that abuts against the outer wall of the connecting rod is detachably connected inside the notch; the connecting rod has a plurality of array holes evenly distributed along the circumferential direction on its outer periphery, and the array holes are located on the side of the adjusting tube facing the ball head.

8. The stamping structure as described in any one of claims 1-4, characterized in that: The box-type slider has a perforated plate at one end facing the stamping die; a mounting base is detachably connected to the perforated plate; and a pressure column is provided on the mounting base.

9. The stamping structure as described in claim 8, characterized in that: A first support plate is horizontally arranged on the perforated plate at the lower end of the mounting base; a second support plate is horizontally arranged at the lower part of the mounting base; and a plane is provided at the lower end of the pressure column that abuts against the upper end of the second support plate.

10. The stamping structure as described in any one of claims 1-4, characterized in that: An auxiliary hydraulic cylinder is provided on the side of the machine tool away from the box-type slide block of the stamping die; an auxiliary pressure column is provided on the upper moving end of the auxiliary hydraulic cylinder; the auxiliary pressure column can selectively stamp the metal in the stamping die.

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