Transfer device for casual inspection of low-pressure casting wheel hot blank

Abstract

The utility model discloses a transfer device for casual inspection of low-pressure casting wheel hot blanks, and belongs to the technical field of low-pressure casting processes. The device comprises a frame, wherein moving wheels are arranged at the bottom of the frame; the tray is located at the top of the frame, and the bearing surface of the tray is matched with the die-casting machine lifting platform and the dipping tank lifting frame in height; the rotary clamping pliers are hinged to the frame through a central supporting point, and the opening degree of a jaw of the rotary clamping pliers is matched with the outer diameter of a wheel rim; and the rotary clamping pincers and the tray are used for transferring the wheel hot blank on the die-casting machine lifting platform to the tray through rotation, and transferring the wheel hot blank to the water dipping tank lifting frame through vehicle body displacement. According to the device, remote control is achieved through a hinge structure by rotating the clamping pincers, and an operator is prevented from making direct contact with a high-temperature blank; the tray is matched with the station height, the height adjusting step is omitted, and the transfer process is simplified; wheel movement and clamping pincers rotation are combined to adapt to workshop space limitation, and a smooth transfer path is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to low pressure casting process technical field especially relates to a kind of transfer device for low pressure casting wheel hot blank sampling inspection. BACKGROUND

[0002] Under the trend of automobile lightweight, aluminum alloy wheel hub is widely produced using low pressure casting process.In this process, hot blank of die casting needs to be immediately sampled by X-ray to avoid batch defects after heat treatment.However, the transfer link of hot blank (temperature 300-400 ℃, weight 16-30 kg) has long-term safety hazards and efficiency bottleneck.

[0003] In related technology, manual transfer mainly relies on ordinary pincers, but in related technology, operators need to hold high-temperature blank at close range, and pincers heat conduction and blank sliding can easily cause burns;Metal pincers holding force is insufficient, and displacement or falling of blank during transfer can easily cause surface damage;Manual handling takes a long time and is difficult to match production line rhythm.Therefore, a transfer device is needed to transport wheel hot blank. SUMMARY

[0004] The utility model provides a kind of transfer device for low pressure casting wheel hot blank sampling inspection to solve above-mentioned problem.The technical scheme is as follows:

[0005] On the one hand, a kind of transfer device for low pressure casting wheel hot blank sampling inspection is provided, comprising:

[0006] Frame, the frame bottom is equipped with moving wheel;

[0007] Tray, located at the top of the frame, the bearing surface of the tray is matched with the height of die casting machine lifting platform and dipping water tank lifting frame;

[0008] Rotary clamping pincers are hinged to the frame through a center support point, and the opening of the pincers is matched with the outer diameter of the wheel rim;

[0009] The rotary clamping pincers and the tray are used to transfer the wheel hot blank on the die casting machine lifting platform to the tray through rotation, and the wheel hot blank is transferred to the dipping water tank lifting frame through body displacement.

[0010] In a possible implementation, the inner side working surface of the rotary clamping pincers is provided with a refractory cotton coating.

[0011] In a possible implementation, the bearing surface of the tray is in a center-concave disc structure.

[0012] In a possible implementation, the installation height of the tray is adjusted in the vertical position within a predetermined range.

[0013] In one possible implementation, the moving wheel is made of nylon, and the surface of the moving wheel in contact with the ground has anti-slip texture.

[0014] The technical solution provided by this utility model brings at least the following beneficial effects:

[0015] The technical solution provided by this utility model, through a structural design where the rotating clamp is hinged to the frame, allows the operator to remotely control the transfer of hot blanks via rotation, avoiding direct contact with the high-temperature blanks. The jaw opening matches the outer diameter of the wheel rim, ensuring stable contact between the jaws and the rim during clamping and reducing the risk of blank slippage. The height of the pallet's bearing surface matches the lifting platform of the die-casting machine and the lifting frame of the dip tank, achieving seamless connection of the hot blanks between different workstations and eliminating the need for manual height adjustment. The linkage design between the rotating clamp and the pallet completes two transfers of the hot blank through rotation and horizontal movement, simplifying the operation process. Wheels at the bottom of the frame allow the device to move freely, adapting to the transfer distance requirements between the die-casting machine and the dip tank. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a transfer device for sampling inspection of hot blanks for low-pressure cast wheels provided by this utility model;

[0018] Figure 2 This utility model provides a schematic diagram of the process of a transfer device for sampling inspection of hot blanks for low-pressure casting wheels, which uses the lifting platform of the die-casting machine to clamp the hot blanks of the wheels.

[0019] Figure 3 This utility model provides a schematic diagram of the process of placing hot wheel blanks on a pallet for sampling inspection of hot blanks in low-pressure casting wheels.

[0020] Figure 4 This utility model provides a schematic diagram of the process of transferring hot blanks of low-pressure cast wheels to a water-dipping tank lifting frame for sampling inspection of hot blanks.

[0021] Attached reference numerals: 1. Moving wheel; 2. Frame; 3. Pallet; 4. Rotary clamp; 5. Die-casting machine lifting platform; 6. Water trough lifting frame; 7. Hot wheel blank. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the present invention will be described in further detail below with reference to the accompanying drawings.

[0023] It should be noted that the terms "first," "second," etc. (if applicable) in the specification of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of utility models consistent with some aspects of this application.

[0024] With the trend towards lightweighting in the automotive industry, aluminum alloy wheels have become a standard feature in passenger vehicles due to their excellent mechanical properties and weight reduction effects. Low-pressure casting, with its advantages of high forming precision and good microstructure, has become the mainstream process for manufacturing aluminum alloy wheels. In this process, the castings must be immediately subjected to X-ray inspection after demolding to detect internal defects such as shrinkage cavities and cracks, avoiding mass scrap after heat treatment. However, the high-temperature blank transfer process involved in this step has long been plagued by safety hazards and operational bottlenecks, becoming a key pain point restricting the improvement of production efficiency.

[0025] In related technologies, hot wheel blanks (temperature 300-400℃, weight 16-30kg) formed by die casting are handled manually. The specific procedure is as follows: the operator uses ordinary pliers to grab the blank from the die casting machine's lifting platform, manually transports it to a cooling water tank 5-15 meters away for rapid cooling, and then transfers it to the X-ray inspection station. This operating mode has the following technical drawbacks:

[0026] However, in related technologies, traditional pliers use smooth metal jaws, resulting in a smaller contact area when gripping curved rims, making them prone to slippage under vibration during transport. Furthermore, the weight of hot blanks increases the risk of burns for a single person using pliers to handle and transfer them.

[0027] This invention provides a transfer device for sampling and inspecting hot blanks of low-pressure cast wheels, thereby reducing labor intensity. See also... Figure 1 , Figure 1 This utility model provides a schematic diagram of a transfer device for sampling inspection of hot blanks for low-pressure cast wheels.

[0028] The device includes a frame 2 with movable wheels 1 at the bottom; a tray 3 located on top of the frame 2, the bearing surface of which matches the height of the die-casting machine lifting platform and the water-dipping tank lifting frame; and a rotating clamp 4 hinged to the frame 2 via a central support point, the jaw opening of which matches the outer diameter of the wheel rim. The rotating clamp 4 and the tray 3 are used to rotate and transfer the hot wheel blanks on the die-casting machine lifting platform to the tray 3, and to transfer the hot wheel blanks to the water-dipping tank lifting frame through the displacement of the vehicle body.

[0029] The frame 2 is a rigid frame structure with casters 1 installed at the bottom to support the entire device and enable movement. The top of the frame 2 is fixed with a tray 3, and the front is hinged to a rotating gripper 4 via a central support point. The casters 1 are installed at the bottom of the frame 2, providing the device with mobility so that the frame 2 can move freely between the die-casting machine lifting platform and the dipping tank lifting frame.

[0030] The pallet 3 is fixed to the top of the frame 2, and its bearing surface is either flat or has a structure adapted to the shape of a wheel hub. The height of the bearing surface of the pallet 3 is aligned with the working surface of the die-casting machine lifting platform and the bearing surface of the water tank lifting frame to ensure that the hot blank does not need to be adjusted in vertical height during the transfer process.

[0031] The rotary clamping clamp 4 is hinged to the frame 2 via a central support point. The jaw opening is designed according to the outer diameter of the wheel rim to ensure stable contact between the inner wall of the jaws and the outer edge of the wheel rim during clamping. The rotary clamping clamp 4 rotates around the central support point to realize two rotational transfer actions of the hot blank from the die-casting machine lifting platform to the pallet 3, and then from the pallet 3 to the dipping tank lifting frame.

[0032] Optionally, depending on the application scenario, the rotary clamp 4 can also move vertically within a certain range to adapt to wheel hubs of different sizes. Furthermore, the minimum opening of the rotary clamp 4 can hold a blank with the smallest rim outer diameter. The rotary clamp 4 can rotate freely around its central support point.

[0033] In one possible implementation, the inner working surface of the rotary clamping pliers 4 is covered with a fire-resistant cotton layer. The inner working surface of the rotary clamping pliers 4 refers to the area where the inner side of the jaws contacts the wheel rim. The fire-resistant cotton layer is a sheet-like structure made of high-temperature resistant fiber material, which is fixed to the inner working surface of the jaws of the rotary clamping pliers 4 by riveting or high-temperature adhesive. The coverage area of ​​the fire-resistant cotton layer includes the entire arc-shaped contact surface of the inner side of the jaws.

[0034] The refractory cotton covering layer isolates the metal jaws of the rotating gripper from heat conduction between the metal jaws and the hot wheel blank at 300-400℃, reducing the temperature of the jaws; the surface friction coefficient of the refractory cotton covering layer is higher than that of the metal surface, increasing the friction between the jaws and the wheel rim; the elastic modulus of the refractory cotton covering layer is lower than that of the metal material, buffering the contact impact between the jaws and the wheel rim during the gripping process.

[0035] The refractory cotton covering layer is fixedly connected to the inner working surface of the jaws of the rotary clamping pliers 4, and the thickness of the covering layer is uniform. The edge of the covering layer extends to the boundary of the inner working surface of the jaws and smoothly transitions with the metal substrate of the rotary clamping pliers 4. The refractory cotton covering layer moves synchronously with the jaws during the opening and closing of the rotary clamping pliers 4, maintaining complete contact with the rim.

[0036] In one possible implementation, the bearing surface of the tray 3 has a centrally recessed disc structure. The centrally recessed disc structure refers to the central region of the bearing surface of the tray 3 being recessed downwards relative to the edge. The shape of the recessed region is circular or a concentric circle structure adapted to the shape of the bottom surface of a wheel hub. The maximum depth of the recessed region is located at the geometric center of the bearing surface of the tray 3, and an annular transition zone is formed between the edge of the recessed region and the outer edge of the tray 3.

[0037] The diameter of the central recessed area covers the diameter of the hub mounting surface of the hot wheel blank; the surface slope of the annular transition area matches the inclination angle of the bottom surface of the wheel blank flange; the outer diameter of the disc structure is greater than the maximum outer diameter of the hot wheel blank, ensuring that the blank is completely placed within the bearing surface of the tray 3.

[0038] The central recessed area matches the shape of the bottom surface of the wheel hub, restricting the horizontal movement of the hot blank on the tray 3; the annular transition area contacts the bottom surface of the wheel rim, increasing the contact area and preventing the blank from shaking during transportation; the depth of the central recess of the disc structure corresponds to the height of the wheel hub protrusion, avoiding skewness when the blank is placed.

[0039] In one possible implementation, the installation height of pallet 3 is adjusted vertically within a preset range. The installation height of pallet 3 refers to the vertical distance between the pallet 3's bearing surface and the bottom of the frame 2. The preset range of vertical position adjustment means that pallet 3 is connected to the frame 2 via a mounting mechanism, allowing the bearing surface of pallet 3 to move up and down within a set height range, with the direction of movement perpendicular to the ground. Pallet 3 is connected to the frame 2 via a slide rail, screw, or hydraulic mechanism to achieve vertical position adjustment; the preset range refers to the interval between the lowest and highest adjustable height values ​​of the pallet 3's bearing surface, covering the height variation requirements of the die-casting machine's lifting platform working surface and the water-dipping trough lifting frame's bearing surface; the adjusted position of pallet 3 is fixed by locking bolts or locating pins.

[0040] By adjusting the installation height of tray 3, the bearing surface of tray 3 is kept at the same height as the lifting platform of different models of die-casting machines and dipping tanks; adapting to the height tolerance of equipment at various workstations in the workshop, ensuring that no manual positioning is required when transferring hot blanks; the vertical position adjustment function compensates for the height deviation of the equipment installation foundation, ensuring the versatility of the device.

[0041] In one possible implementation, the movable wheel 1 is made of nylon, and the contact surface between the movable wheel 1 and the ground is provided with anti-slip texture.

[0042] The nylon material refers to the wheel body of the moving wheel 1 being made of polyamide engineering plastic through injection molding. The contact surface between the moving wheel 1 and the ground refers to the annular outer surface area of ​​the moving wheel 1 that directly contacts the workshop floor when it rolls. The anti-slip texture is a continuous raised and recessed pattern formed on the contact surface between the moving wheel 1 and the ground, and the pattern direction includes at least one of axial straight line, radial, or wavy.

[0043] The nylon-made mobile wheel 1 has better wear resistance than metal wheels when bearing the weight of the frame 2 and the hot blank; the noise generated by the nylon material in contact with the ground is lower than that of metal wheels, which meets the noise control requirements of the workshop; the anti-slip texture increases the roughness of the contact surface, thereby improving the wheel's grip on oily and watery surfaces; the nylon material is resistant to the temperature of the workshop environment, avoiding wheel deformation caused by high-temperature blank radiation.

[0044] For example, see Figure 2 The diagram shows a transfer device for sampling inspection of hot blanks for low-pressure cast wheels. The device clamps the hot blanks of wheels from the lifting platform of the die-casting machine. The device can be stopped next to the lifting platform 5 of the die-casting machine. The hot blanks of wheels 7 are clamped by rotating the clamping clamp 4 and then rotated 90° to place them on the tray 3.

[0045] See Figure 3 The diagram shows a transfer device for sampling inspection of hot blanks for low-pressure cast wheels. The process of placing the hot blanks of wheels on a tray is illustrated. After the wheel is clamped, the rotating clamping pliers can be used as handles to push the device and transport the hot blanks of wheels to the side of the water-dipping tank lifting frame 6.

[0046] See Figure 4 The diagram shows a transfer device for sampling inspection of hot blanks for low-pressure casting wheels. The device is used to transfer hot blanks of wheels to a water-dipping tank lifting frame. The device is stopped next to the water-dipping tank lifting frame 6. The hot blanks of wheels 7 are clamped by rotating clamps 4 and rotated 90° to be placed on the water-dipping tank lifting frame 6.

[0047] In summary, the technical solution provided by this utility model, through the hinged structure of the rotating clamping jaws and their cooperation with the frame, keeps the operator away from the direct contact area with the high-temperature blank, avoiding the risks of manual clamping. The height matching design of the tray and the two side workstations eliminates the need for manual lifting / lowering actions, realizing a standardized transfer process of rotation-translation-rotation for the hot blank. Insulation material blocks heat conduction between the clamping body and the high-temperature blank, preventing secondary burns caused by the metal clamping body heating up. The surface roughness of the coating layer is higher than that of the metal jaws, increasing friction during clamping and reducing the probability of the blank slipping out.

[0048] By using the geometric fit between the recessed area and the wheel hub, the horizontal displacement of the blank on the pallet is limited; by adjusting the vertical position to adapt to the differences in station height of different models of die-casting machines and dipping tanks, the transfer deviation caused by equipment height tolerance is eliminated; the same device can cover multiple specifications of equipment in the workshop, reducing the need for special tools.

[0049] Those skilled in the art will understand that Figures 1-4 The structure shown does not constitute a limitation on the structure of this utility model. It may include more or fewer components than shown, or combine certain components, or use different component arrangements.

[0050] It should be understood that "multiple" as used in this article refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0051] The above are merely exemplary embodiments of the present utility model and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., made within the principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A transfer device for sampling inspection of hot blanks for low-pressure cast wheels, characterized in that, The device includes: The vehicle frame is equipped with casters at its bottom; The pallet is located on top of the vehicle frame, and the bearing surface of the pallet is matched with the height of the die-casting machine lifting platform and the water-dipping tank lifting frame. A rotary clamp is hinged to the frame via a central support point, and the jaw opening of the rotary clamp matches the outer diameter of the wheel rim. The rotating clamp and the tray are used to rotate and transfer the hot wheel blanks on the die-casting machine lifting platform to the tray, and to transfer the hot wheel blanks to the water-dipping tank lifting frame by the displacement of the vehicle body.

2. The transfer device for sampling inspection of hot blanks for low-pressure cast wheels according to claim 1, characterized in that, The inner working surface of the rotary gripper is covered with a fire-resistant cotton layer.

3. The transfer device for sampling inspection of hot blanks for low-pressure cast wheels according to claim 1, characterized in that, The bearing surface of the tray has a centrally recessed disc structure.

4. The transfer device for sampling inspection of hot blanks for low-pressure cast wheels according to claim 1, characterized in that, The installation height of the tray is adjusted vertically within a preset range.

5. The transfer device for sampling inspection of hot blanks for low-pressure cast wheels according to claim 1, characterized in that, The wheels are made of nylon, and the surfaces of the wheels that contact the ground have anti-slip textures.

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