Sand mold casting demolding device for casting
By designing a casting demolding device with a three-dimensional striking mechanism and an integrated control system, the problems of low demolding efficiency and casting damage in traditional casting are solved. Automatic adaptive and protective demolding is achieved, improving casting protection and the quality of the working environment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-12
- Publication Date
- 2026-04-10
AI Technical Summary
In the existing casting process, traditional manual demolding is inefficient and labor-intensive. Furthermore, existing mechanical devices cannot adapt to sand boxes of different sizes and shapes, which can easily damage the castings. This also results in unstable demolding and dust and noise pollution.
A demolding device was designed, comprising a frame, a sand box support mechanism, a three-dimensional striking mechanism, and an integrated control system. It utilizes pressure and vibration sensors to construct a closed-loop control for perception and response, achieves multi-point, multi-mode striking through a three-dimensional moving module, protects the casting by combining a floating platform and a vibration damper, and employs a servo electric cylinder to precisely control the striking force.
It achieves stable demolding by automatically adapting to different sand box sizes and shapes, improving efficiency, reducing labor intensity and the risk of casting damage, and improving the working environment.
Smart Images
Figure CN224101816U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to foundry equipment technical field especially relates to a sand mould casting for casting. BACKGROUND
[0002] After sand casting, the casting needs to be taken out from the sand mold wrapped it. The traditional way mainly relies on artificial use tool to knock the sand box, and there are problems such as low efficiency, high labor intensity, easy to damage the casting, serious dust noise pollution, etc., some simple mechanical stripping device of existing, adopt single direction or fixed mode of knocking, cannot adapt to different size, shape sand box, the stripping effect is unstable, easy to cause the sand box rupture or casting hidden injury due to the knocking force and position improper.
[0003] Therefore, a stripping device that can automatically adapt to the sand box, realize multi-point multi-mode knocking, and effectively protect the casting is needed. UTILITY MODEL CONTENTS
[0004] Based on the technical problems existing in the prior art, the utility model provides a sand mold casting stripping device for casting.
[0005] The utility model provides a sand mold casting stripping device for casting, which comprises a rack, a sand box bearing mechanism, a three-dimensional knocking mechanism and an integrated control system.
[0006] The rack is of a frame type structure.
[0007] The sand box bearing mechanism is installed on the rack and comprises a floating platform and a plurality of lateral clamps.
[0008] The three-dimensional knocking mechanism is installed on the top of the rack and comprises a horizontal movement module, a vertical movement module, a vertical drive and a knocking head assembly.
[0009] The key improvement of the utility model lies in its unique sensing and response structure.
[0010] The knocking head assembly comprises a mounting shell, a pressure sensor and a buffer knocking head.
[0011] A plurality of vibration sensors are fixedly installed on the lower side and the side surface of the floating platform.
[0012] The integrated control system comprises a control cabinet and a control module arranged in the control cabinet; the control module is electrically connected with the lateral clamp, the transverse moving module, the longitudinal moving module, the vertical driver, the pressure sensor and each vibration sensor respectively.
[0013] During the knocking process, the PLC controls the three-dimensional moving module (the transverse moving module and the longitudinal moving module) to drive the knocking head assembly to move above a first knocking point pre-stored in a program, and then controls the servo electric cylinder to knock once with a preset force, in the process, the pressure sensor feeds back the impact force signal to the PLC in real time, and the vibration sensor distributed under the platform also transmits the vibration spectrum signal caused by the knocking to the PLC, the PLC has pre-set response logic (this is an inherent function of the hardware control unit) inside, for example: when the knocking force feedback curve characteristics (such as peak value) and the vibration response (such as specific frequency band energy) of a certain point are detected to meet the pre-set mode of "loose sand mold", the PLC immediately outputs a control signal to command the three-dimensional moving module to move to the next point, and may fine-tune the output force parameter of the next point according to the feedback of the previous point, the whole process is realized by the above specific mechanical structure and electrical connection structure, without manual intervention, until the knocking cycle of all pre-set points is completed and the device is automatically stopped.
[0014] As a further improvement of the utility model, the vertical driver is a servo electric cylinder or a proportional control pneumatic cylinder; this structure makes the knocking force realize accurate linear control.
[0015] As a further improvement of the utility model, the damper is an air spring or a damping spring; this structure makes the floating platform not only buffer the impact, but also provide necessary vibration freedom, which is beneficial to the collapse of the sand mold.
[0016] As a further improvement of the utility model, the driving end of the lateral clamp is a V-shaped or arc-shaped clamping block; this shape structure makes it better adapt to and clamp sandboxes with different cross-sectional shapes.
[0017] As a further improvement of the utility model, the elastic material layer of the buffer knocking head is polyurethane or engineering rubber; this structure can avoid direct metal impact on the sand box and prevent the damage of the box.
[0018] Compared with the prior art, the utility model provides a sand mold casting demolding device for casting, which has the following beneficial effects:
[0019] 1. Multi-degree-of-freedom precise knocking structure: through a three-dimensional movement module, the knocking head can reach any predetermined position on the surface of the sand box, realizing comprehensive and uniform knocking coverage; integrated sensing structure: by integrating a pressure sensor in the knocking head and distributing vibration sensors on the floating platform, a multi-point physical signal acquisition network is constructed. This structure can directly and in real time acquire two key physical quantities, namely, "knocking force" and "system vibration response".
[0020] 2. Closed-loop response control structure: the integrated control system (as a hardware unit) receives signals from the above-mentioned sensors and directly drives the three-dimensional movement module and the vertical drive to adjust the knocking position and force according to the internal preset response logic (for example, when the pressure feedback value of a certain point is lower than the threshold value and the corresponding vibration frequency spectrum energy rises, the control module moves to the next adjacent point). This series of electrical signal connections and response relationships constitute a "sensing-response" closed-loop control structure based on hardware connection.
[0021] 3. Self-adaptive protection structure: the combination of the floating platform and the shock absorber not only avoids the direct transmission of a huge impact force to the rack, but also allows the sand box to produce beneficial micro-complex vibration for demolding. The elastic buffer knocking head prevents hard damage. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 A schematic diagram of the overall structure of a sand mold casting demolding device for casting is proposed for the utility model;
[0023] Figure 2 A schematic diagram of the floating platform structure of a sand mold casting demolding device for casting is proposed for the utility model;
[0024] Figure 3 A schematic diagram of the three-dimensional knocking mechanism structure of a sand mold casting demolding device for casting is proposed for the utility model;
[0025] Figure 4 An electrical connection block diagram of the integrated control system of the utility model.
[0026] In the figure: 1, rack; 2, floating platform; 3, shock absorber; 4, lateral clamping device; 5, horizontal movement module; 6, vertical movement module; 7, vertical drive; 8, knocking head assembly; 9, vibration sensor; 10, control cabinet. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.
[0028] In the description of the utility model, it needs to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.
[0029] Referring to Figures 1-4 A sand mold casting demolding device for casting, comprising a rectangular frame 1, a sand box bearing mechanism is installed at the middle position of the top of the frame 1, specifically, a steel floating platform 2 is supported on the bottom plate of the frame 1 through four air springs (dampers 3) at the corners, a side clamping device 4 driven by a gas cylinder is installed at each of the four edges of the floating platform 2, and the V-shaped clamping block at the front end can move synchronously to the center to clamp the sand box placed in the center of the platform.
[0030] In addition, a three-dimensional knocking mechanism is installed at the top of the frame 1, a transverse moving module 5 (X axis) is fixed at the top rear of the frame 1, a longitudinal moving module 6 (Y axis) is installed on the transverse moving module 5 through a sliding block, and a servo electric cylinder (vertical driver 7) is vertically fixed on the sliding block of the longitudinal moving module 6, and the piston rod end of the servo electric cylinder is connected with a knocking head assembly 8.
[0031] It should be noted that the specific structure of the knocking head assembly 8 is that the upper end of the installation shell is connected with the servo electric cylinder, the lower end is connected with a buffer knocking head through a high-precision pressure sensor, and the outer layer of the metal core part of the buffer knocking head is covered with an elastic material layer made of polyurethane.
[0032] In addition, five vibration sensors 9 (such as accelerometers) are fixed at the four corners and the center of the bottom surface of the floating platform 2, the integrated control system comprises a control cabinet 10 and a PLC (programmable logic controller) installed inside, the PLC is electrically connected with all motor drivers, cylinder solenoid valves, pressure sensors and vibration sensors 9 through cables, and forms an electrical connection relationship as shown in Figure 4 .
[0033] Working process is briefly described as follows:
[0034] After the operator places the sand box on the floating platform 2 and starts, the lateral clamping device 4 is automatically clamped, the three-dimensional moving module (the horizontal moving module 5, the longitudinal moving module 6) is driven by the PLC control to drive the knocking head assembly 8 to move above the first knocking point stored in the program, then the servo cylinder is controlled to knock once with a preset force, in the process, the pressure sensor feeds back the impact force signal to the PLC in real time, at the same time, the vibration sensor 9 distributed under the platform also transmits the vibration spectrum signal caused by the knocking to the PLC, the response logic (this is the inherent function of the hardware control unit) is preset in the PLC, for example: when the knocking force feedback curve characteristics (such as peak value) and vibration response (such as specific frequency band energy) of a certain point meet the preset mode of "loose sand mold", the PLC outputs the control signal immediately, commands the three-dimensional moving module to move to the next point, and may adjust the output force parameter of the next point according to the feedback of the previous point, the whole process is realized by the above specific mechanical structure and electrical connection structure, without manual intervention, until the knocking cycle of all preset points is completed, and then it is automatically stopped; The device structure of the utility model is reasonable, through the specific sensor layout, signal connection and hardware structure of the actuator linkage, the adaptive demolding action of imitating the experience of skilled workers and differentiating the urgency is realized, the demolding efficiency and quality are significantly improved, the damage risk of the casting is reduced, and the working environment is improved.
[0035] The above is only the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model makes equivalent replacement or change, should be covered in the protection scope of the utility model.
Claims
1. A sand mould casting demoulding device for foundry, comprising a frame (1), characterised in that, Also comprising: a sand box bearing mechanism installed on the frame (1), comprising a floating platform (2) and a plurality of lateral clamps (4); the floating platform (2) is connected with the bottom plate of the frame (1) through a plurality of dampers (3); the lateral clamps (4) are symmetrically distributed around the floating platform (2); a three-dimensional knocking mechanism installed on the frame (1), comprising a horizontal moving module (5), a vertical moving module (6), a vertical drive (7) and a knocking head assembly (8); the horizontal moving module (5) is fixed on the top of the frame (1); the vertical moving module (6) is slidingly connected with the horizontal moving module (5); the vertical drive (7) is fixed on the sliding block of the vertical moving module (6); the knocking head assembly (8) is connected with the output end of the vertical drive (7); the knocking head assembly (8) comprises a mounting shell, a pressure sensor and a buffer knocking head; the pressure sensor is fixed between the mounting shell and the buffer knocking head; a plurality of vibration sensors (9) are fixedly installed on the floating platform (2) in a distributed manner; an integrated control system comprising a control cabinet (10) and a control module arranged therein.
2. A sand mould casting ejection device for castings according to claim 1, characterised in that, The vertical drive (7) is a servo electric cylinder or a proportional control pneumatic cylinder.
3. A sand mould casting ejection device for foundry use according to claim 1, characterised in that, The damper (3) is an air spring or a damping spring.
4. A sand mould casting ejection device for foundry use according to claim 1, characterised in that, The driving end of the lateral clamp (4) is a V-shaped or arc-shaped clamp block.
5. A sand mould casting ejection device for foundry use according to claim 1, characterized in that, The outer end surface of the buffer knocking head is covered with an elastic material layer.
6. A sand mould casting ejection device for castings according to claim 5, characterised in that, The elastic material layer is a polyurethane or engineering rubber layer.
7. A sand mould casting ejection device for foundry use according to claim 1, characterised in that, The control module is electrically connected with the lateral clamp (4), the horizontal moving module (5), the vertical moving module (6), the vertical drive (7), the pressure sensor and each vibration sensor (9), respectively.