A new energy end cover heat treatment after the shape of the shaping tool

Abstract

The present application relates to the technical field of end cap shaping, and discloses a new energy end cap heat treatment after following shaping tooling, including the machine body, the display screen is installed on the machine body, the bottom plate is fixed on the machine body, the bottom die is installed on the bottom plate, the guide column is fixed on the four corner positions of the top surface of the bottom plate, the liftable top plate is arranged on the machine body, the shaping die is installed on the bottom surface of the top plate and is arranged opposite to the bottom die, four guide openings are formed on the top plate and are arranged opposite to the four guide columns respectively, and the detection assembly is arranged on the machine body. When the shaping die deviates, the movable rod in the deviation direction is pressed and transmits the pressure to the corresponding sensor, the display screen directly displays the numerical value change of each sensor, the worker can quickly judge the deviation direction and timely adjust according to the same, and the deviation problem caused by the mold vibration or the guide wear is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of end cap shaping technology, and in particular to a conformal shaping tooling for heat-treated end caps of new energy vehicles. Background Technology

[0002] The heat treatment conformal shaping fixture for end caps of new energy vehicles is a precision tooling equipment specifically designed to correct unexpected deformations of end caps of core components such as motors and controllers of new energy vehicles during the heat treatment process. It utilizes the residual heat of the end caps before they have completely cooled to perform heat correction, so as to achieve the best correction effect and stabilize their final shape.

[0003] In existing forming fixtures, the positional displacement of the forming die due to vibration and other factors during repeated stamping processes can lead to a series of drawbacks. First, die displacement directly causes the stamping center to deviate from the workpiece deformation center, resulting in uneven corrective forces on the workpiece. Areas that originally needed forming may not be sufficiently compressed, while qualified areas may be subjected to excessive compression, causing secondary deformation or localized damage to the workpiece and reducing the forming pass rate. Second, after die displacement, the workpiece's positioning within the die is no longer accurate, and the force point and direction change with each stamping, resulting in unstable forming effects. The dimensional consistency of products in the same batch after forming is poor, affecting subsequent assembly accuracy. Existing forming fixtures cannot provide timely feedback to operators when the die is displaced, which reduces the product pass rate and causes die wear.

[0004] Therefore, it is necessary to design a conformal shaping fixture for the heat treatment of new energy end caps to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a conformal shaping fixture for heat-treated end caps of new energy sources.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A heat-treated conformal shaping fixture for new energy end caps includes a machine body with a display screen mounted on it. A base plate is fixed to the machine body, and a bottom mold is mounted on the base plate. Guide posts are fixed at the four corners of the top surface of the base plate. A liftable top plate is provided on the machine body, and a shaping mold is mounted on the bottom surface of the top plate, with the shaping mold facing the bottom mold. Four guide openings are provided on the top plate, each facing one of the four guide posts. A detection component is provided on the machine body, including a mounting frame connected to the machine body via a sliding component. Two pressing components are provided on the top plate.

[0007] In a preferred embodiment of the present invention, in the detection assembly, the mounting frame is placed between the bottom plate and the top plate. The mounting frame has several openings, and a movable rod is slidably disposed in each opening. A protrusion is fixed at the end of each movable rod, and a fixing ring is fixed at the end of each movable rod away from the corresponding protrusion. Each fixing ring is connected to the mounting frame through a first spring. Several connecting frames are fixed on the mounting frame, and a pressure sensor is installed on each connecting frame. The pressure sensors are respectively positioned opposite the several movable rods.

[0008] As a preferred embodiment of the present invention, a plurality of pressure sensors are arranged in a circumferential array around the axis of the shaping mold, and each pressure sensor is electrically connected to the display screen.

[0009] As a preferred embodiment of the present invention, the sliding assembly includes two sliding structures. Each sliding structure includes a slide rail, which is fixed to the machine body. A slide block is slidably disposed on the slide rail, and the slide block is connected to the slide rail by a tension spring. The slide block is fixed to the side of the mounting bracket. A first limiting block and a second limiting block are fixed to the side of the slide rail, and the slide block is located between the first limiting block and the second limiting block. The first limiting block is made of a magnet.

[0010] As a preferred embodiment of the present invention, in the initial state, under the elastic force of the tension spring, the slide block is in contact with the first limiting block.

[0011] As a preferred embodiment of the present invention, the pressing component includes a fixed base, which is fixed to a top plate. A vertical rod is slidably disposed on the fixed base and fixed to a mounting bracket. A through-hole is provided on the surface of the fixed base, and a movable pin is slidably disposed in the through-hole. A magnetic block is fixed to the end of the movable pin, and the magnetic block is connected to the fixed base by a second spring.

[0012] As a preferred embodiment of the present invention, the outer surface of the vertical rod is in contact with the inner wall of the fixing seat.

[0013] As a preferred embodiment of the present invention, the protrusion has a hemispherical structure.

[0014] As a preferred embodiment of the present invention, the mounting bracket is staggered from the four guide posts.

[0015] The present invention has the following beneficial effects: By installing detection components on the machine body, the position of the forming die during the stamping process is monitored in real time using circumferentially arrayed movable rods and pressure sensors. When the forming die deviates, the movable rod in the direction of deviation is pressed and transmits pressure to the corresponding sensor. The display screen intuitively displays the changes in the values ​​of each sensor, allowing operators to quickly determine the direction of deviation and make timely adjustments. This effectively avoids misalignment problems caused by mold vibration or guide wear, eliminating risks such as secondary deformation, local damage, and dimensional inconsistencies. The linkage design of the sliding component and the pressing component allows the mounting bracket to descend synchronously in the initial stage of pressing down the top plate and remain stationary before forming. This ensures both the safe avoidance of detection elements and the accuracy of monitoring. This tooling improves the processing accuracy and stability of the end cap hot forming process, and reduces product scrap rate and mold maintenance costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a conformal shaping fixture for heat-treated end caps of new energy sources proposed in this invention. Figure 2 This is a structural diagram of the bottom mold, shaping mold, detection component, and sliding component; Figure 3 This is a schematic diagram of the detection component. Figure 4 This is a schematic diagram of the sliding component. Figure 5 This is a structural diagram of the top plate and two pressing components. Figure 6 This is a cross-sectional view of the pressure-down assembly.

[0017] In the diagram: 1. Body; 11. Display screen; 2. Base plate; 21. Guide column; 3. Bottom mold; 4. Top plate; 41. Guide opening; 5. Shaping mold; 61. Mounting bracket; 62. Through port; 63. Movable rod; 631. Protrusion; 64. Fixing ring; 65. First spring; 66. Connecting frame; 67. Pressure sensor; 71. Slide rail; 72. Slide seat; 73. Tension spring; 74. First limit block; 75. Second limit block; 81. Fixed seat; 82. Movable pin; 83. Magnetic block; 84. Second spring; 85. Vertical rod. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example 1: This example discloses a conformal shaping fixture for heat-treated end caps of new energy vehicles, referring to... Figure 1-3The system includes a body 1, on which a display screen 11 is mounted. A base plate 2 is fixed to the body 1. The base plate 2 is made of high-strength cast iron or steel plate, and its surface is precision ground to ensure the flatness of the bottom mold 3 after installation. The bottom mold 3 is mounted on the base plate 2, and its shape matches the bottom contour of the new energy end cap to support the workpiece to be shaped. Guide posts 21 are fixed at the four corners of the top surface of the base plate 2. The guide posts 21 are made of surface-hardened alloy steel, which has high hardness and wear resistance and can withstand the lateral force of the top plate 4 during lifting and lowering for a long time without deformation. The top plate 4 is adjustable, and a forming mold 5 is installed on the bottom surface of the top plate 4. The forming mold 5 is positioned directly opposite the bottom mold 3. The forming mold 5 and the bottom mold 3 together form a forming cavity. When the top plate 4 is pressed down, the forming mold 5 applies pressure to the end cap that has deformed after heat treatment, so that it returns to the designed shape. The top plate 4 has four guide ports 41, which are respectively positioned directly opposite four guide posts 21. The guide ports 41 and the guide posts 21 slide together to ensure the verticality and positional accuracy of the top plate 4 during the pressing process, and to prevent misalignment between the forming mold 5 and the bottom mold 3.

[0020] A detection assembly is installed on the body 1, including a mounting frame 61. The mounting frame 61 is placed between the bottom plate 2 and the top plate 4. The internal space of the mounting frame 61 can accommodate the passing of the shaping mold 5. The mounting frame 61 has several openings 62, which are evenly distributed along the inner circumference of the mounting frame 61. A movable rod 63 is slidably installed in each opening 62. A small gap is maintained between the outer surface of the movable rod 63 and the inner wall of the opening 62 to ensure that the movable rod 63 can move flexibly without jamming. A protrusion 631 is fixed at the end of each movable rod 63. The protrusion 631 has a hemispherical structure. The hemispherical protrusion 631 can reduce the contact area with the edge of the shaping mold 5, thereby reducing friction. At the same time, when the shaping mold 5 shifts, the protrusion 631 can... The pressure is sensitively transmitted to the movable rod 63. Each movable rod 63 has a fixed ring 64 at the end away from the corresponding protrusion 631. Each fixed ring 64 is connected to the mounting bracket 61 through a first spring 65. The first spring 65 is sleeved on the movable rod 63, with one end abutting against the fixed ring 64 and the other end abutting against the mounting bracket 61. The first spring 65 is always in a compressed state, providing the elastic force for the movable rod 63 to return to its original position. Several connecting brackets 66 are fixed on the mounting bracket 61. Each connecting bracket 66 is equipped with a pressure sensor 67. Several pressure sensors 67 are respectively set opposite to several movable rods 63. The pressure sensors 67 are miniature resistance strain gauge sensors, which can convert pressure signals into electrical signals and have the characteristics of fast response and high accuracy.

[0021] In the initial state, under the elastic force of the first spring 65, the end of the movable rod 63 away from the protrusion 631 contacts the pressure sensor 67, but does not apply pressure to the pressure sensor 67. At this time, the end face of the movable rod 63 just fits against the force-bearing surface of the pressure sensor 67, and the preload of the first spring 65 is set to just offset the weight of the movable rod 63 and the fixed ring 64. Therefore, the output of the pressure sensor 67 is zero.

[0022] Mounting bracket 61 is connected to the machine body 1 via a sliding assembly. The sliding assembly includes two sliding structures, which are respectively located on the left and right sides of the mounting bracket 61 to ensure the stability of the mounting bracket 61 during lifting and lowering. Each sliding structure includes a slide rail 71, which is fixed to the machine body 1 and arranged vertically. A slide seat 72 is slidably mounted on the slide rail 71, and the slide seat 72 has embedded balls or wear-resistant bushings to form a rolling or sliding engagement with the slide rail 71. The slide seat 72 and the slide rail 71 are connected by a tension spring 73. The slide seat 72 is fixed to the side of the mounting bracket 61, and the mounting bracket 61 moves on the slide rail 71 via the slide seat 72. A first limit block is fixed to the side of the slide rail 71. The first limiting block 74 is located at the upper part of the slide rail 71, and the second limiting block 75 is located at the lower part of the slide rail 71. The slide block 72 is located between the first limiting block 74 and the second limiting block 75. The first limiting block 74 and the second limiting block 75 are used to limit the travel of the slide block 72, so that the slide block 72 can only move between the first limiting block 74 and the second limiting block 75. In the initial state, under the elastic force of the tension spring 73, the slide block 72 is in contact with the first limiting block 74. At this time, the mounting bracket 61 is located at the upper limit position. In this position, the lower surface of the mounting bracket 61 maintains a sufficient distance from the bottom mold 3, which is convenient for the operator to place and remove the workpiece.

[0023] Example 2: Based on Example 1, this example discloses a conformal shaping fixture for heat-treated end caps of new energy vehicles, referring to... Figure 4-6Two pressing assemblies are provided on the top plate 4, located on both sides of the top plate 4, corresponding to the positions of the two sliding structures. Each pressing assembly includes a fixed base 81, which is fixed to the top plate 4. The fixed base 81 is typically made of a metal block and has a vertical guide hole inside. A vertical rod 85 is slidably mounted on the fixed base 81 and fixed to the mounting bracket 61. The upper end of the vertical rod 85 passes through the guide hole of the fixed base 81, with a clearance fit between the vertical rod 85 and the guide hole to ensure free vertical movement. A through-hole is provided on the surface of the fixed base 81. A movable pin 82 is slidably disposed in the through-hole of the side wall of the fixed base 81, intersecting with the guide hole. A magnetic block 83 is fixed to the end of the movable pin 82. The magnetic block 83 is connected to the fixed base 81 by a second spring 84. The second spring 84 is always in a compressed state, pushing the movable pin 82 into the fixed base 81. In the initial state, under the elastic force of the second spring 84, the movable pin 82 is located inside the fixed base 81. At this time, the movable pin 82 can restrict the vertical rod 85 from being inserted into the fixed base 81. Specifically, the front end of the movable pin 82 extends into the guide hole, preventing the upper end of the vertical rod 85 from being inserted further.

[0024] Several pressure sensors 67 are arranged in a circumferential array. Each pressure sensor 67 is electrically connected to the display screen 11. The display screen 11 is used to display the values ​​fed back by the pressure sensors 67. The display screen 11 can display the real-time data of all pressure sensors 67 at the same time and present them in the form of a bar chart or a numerical list, which is convenient for the staff to compare intuitively. When using the end cap shaping device proposed in this invention, the staff first places the workpiece to be shaped on the bottom mold 3 and starts the machine to make the top plate 4 drive the shaping mold 5 to move downward. The end cap to be shaped may be warped, dented or irregularly deformed after heat treatment. When placing it on the bottom mold 3, the surface to be shaped should be facing upward and the workpiece should be in contact with the positioning reference of the bottom mold 3.

[0025] When the top plate 4 moves downward, it can drive the two fixed seats 81 to move downward. When the fixed seats 81 move downward, they will drive the vertical rods 85 and the mounting frame 61 to move downward together. In the initial stage of the downward movement of the two fixed seats 81, the two movable pins 82 on the two fixed seats 81 can press down the two vertical rods 85 respectively, so that the two vertical rods 85 together drive the mounting frame 61 to move downward. Therefore, in the initial stage of the downward movement of the top plate 4, the mounting frame 61 will move downward synchronously with the top plate 4. At this time, the slide block 72 also moves downward along the slide rail 71 under the tension of the tension spring 73. The entire mounting frame 61 descends smoothly. When the movable pins 82 move to the position directly opposite the first limit block 74, the movable pins 82 will... Attracted by the first limiting block 74 made of magnet, the magnetic block 83 is attached to the first limiting block 74. The first limiting block 74 is made of magnet. When the magnetic block 83 gets close, it will generate a strong attraction force, which will overcome the elastic force of the second spring 84 and pull the movable pin 82 outward. When the magnetic block 83 is attached to the first limiting block 74, the movable pin 82 is completely disengaged from the fixed seat 81. At this time, the movable pin 82 no longer provides a constraint on the vertical rod 85. This allows the fixed seat 81 and the vertical rod 85 to move relative to each other. The upper end of the vertical rod 85 is no longer blocked by the movable pin 82. Therefore, the fixed seat 81 can continue to move downward while the vertical rod 85 remains stationary.

[0026] Furthermore, the top plate 4 drives the forming mold 5 to continue moving downwards. At this time, the two slide blocks 72 fall on the two second limit blocks 75 respectively, and the mounting frame 61 remains stationary. This causes relative movement between the top plate 4 and the mounting frame 61. After the slide blocks 72 fall on the second limit blocks 75, the position of the mounting frame 61 is fixed and cannot continue to descend. During this process, the forming mold 5 and the bottom mold 3 cooperate to complete the stamping and forming of the end cap. At the same time, the forming mold 5 will contact several protrusions 631. When the forming mold 5 is in the correct centering position, the periphery of the forming mold 5 maintains a uniform small gap with all the protrusions 631, or only makes slight contact without generating extrusion force. The forming mold 5 will not extrude several movable rods 63, and the several movable rods 63 will not extrude the corresponding pressure sensors 67. This is the state under normal working conditions. At this time, the readings of all pressure sensors 67 are zero or close to zero. When the forming mold 5 is in an offset state, the forming mold 5 will extrude the movable rods 63 in the offset direction, which causes the movable rods 63 to apply pressure to the corresponding pressure sensors 67.

[0027] For example, if the forming mold 5 shifts forward, the front movable rod 63 will be compressed, and its corresponding pressure sensor 67 will display a positive value; the rear movable rod 63 may no longer contact the sensor due to the increased gap, and the sensor will display zero. Therefore, during the forming process, the operator can use the readings of several pressure sensors 67 displayed on the display screen 11 to determine whether the forming mold 5 has shifted and to determine the direction of the shift. Then, the forming mold 5 can be adjusted in time. For example, if the reading of the pressure sensor 67 on the left side is significantly higher than that on the right side, it means that the forming mold 5 has shifted to the left, and the horizontal position of the top plate 4 needs to be adjusted or the guide mechanism needs to be corrected. Through this real-time monitoring and feedback, the product dimensions may be out of tolerance or the mold may be damaged due to the shift of the forming mold 5, thereby improving the pass rate of forming and the service life of the mold.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A shaping fixture for heat-treated end caps of new energy sources, characterized in that, The device includes a body (1), on which a display screen (11) is installed. A base plate (2) is fixed on the body (1). A bottom mold (3) is installed on the base plate (2). Guide columns (21) are fixed at the four corners of the top surface of the base plate (2). A liftable top plate (4) is provided on the body (1). A shaping mold (5) is installed on the bottom surface of the top plate (4), and the shaping mold (5) is set directly opposite the bottom mold (3). Four guide ports (41) are opened on the top plate (4), and the four guide ports (41) are respectively set directly opposite the four guide columns (21). A detection component is provided on the body (1). The detection component includes a mounting frame (61). The mounting frame (61) is connected to the body (1) through a sliding component. Two pressing components are provided on the top plate (4). The sliding assembly includes two sliding structures. The sliding structure includes a slide rail (71), which is fixed on the body (1). A slide seat (72) is slidably disposed on the slide rail (71). The slide seat (72) is connected to the slide rail (71) by a tension spring (73). The slide seat (72) is fixed on the side of the mounting bracket (61). A first limiting block (74) and a second limiting block (75) are fixed on the side of the slide rail (71). The slide seat (72) is located between the first limiting block (74) and the second limiting block (75). The first limiting block (74) is made of magnet. In the initial state, under the elastic force of the tension spring (73), the slide (72) is in contact with the first limiting block (74); The pressing assembly includes a fixed base (81) which is fixed on the top plate (4). A vertical rod (85) is slidably arranged on the fixed base (81) and fixed on the mounting bracket (61). A through hole is opened on the surface of the fixed base (81) and a movable pin (82) is slidably arranged in the through hole. A magnetic block (83) is fixed to the end of the movable pin (82). The magnetic block (83) is connected to the fixed base (81) by a second spring (84).

2. The conformal shaping fixture for heat-treated end caps of new energy sources according to claim 1, characterized in that, In the detection assembly, the mounting frame (61) is placed between the bottom plate (2) and the top plate (4). The mounting frame (61) has several openings (62). Each opening (62) has a movable rod (63) slidably disposed therein. Each movable rod (63) has a protrusion (631) fixed at its end. Each movable rod (63) has a fixing ring (64) fixed at its end away from the corresponding protrusion (631). Each fixing ring (64) is connected to the mounting frame (61) through a first spring (65). The mounting frame (61) has several connecting frames (66) fixed thereon. Each connecting frame (66) has a pressure sensor (67) installed thereon. The pressure sensors (67) are respectively positioned opposite the movable rods (63).

3. The conformal shaping fixture for heat-treated new energy end caps according to claim 2, characterized in that, Several pressure sensors (67) are arranged in a circumferential array around the axis of the shaping mold (5), and each pressure sensor (67) is electrically connected to the display screen (11).

4. The conformal shaping fixture for heat-treated new energy end caps according to claim 3, characterized in that, The outer surface of the vertical rod (85) is in contact with the inner wall of the fixing seat (81).

5. The conformal shaping fixture for heat-treated new energy end caps according to claim 2, characterized in that, The protrusion (631) has a hemispherical structure.

6. The conformal shaping fixture for heat-treated new energy end caps according to claim 1, characterized in that, The mounting bracket (61) is offset from the four guide posts (21).

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