Lost foam casting sand box positioning and closing device
By designing a combination of locking and clamping mechanisms in lost foam casting, the problem of shaking when the sand box is closed is solved, ensuring that the upper and lower sand boxes fit tightly together, thus improving casting quality and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-20
AI Technical Summary
In existing lost foam casting, the sand box lacks a fixed structure when it is closed, which makes the upper and lower sand boxes prone to shaking during casting, affecting the quality of the casting process.
A positioning and closing device for lost foam casting sand boxes, including a locking mechanism and a clamping mechanism, was designed. By using a combination of positioning rod, positioning plate, locking mechanism and clamping mechanism, the upper and lower sand boxes are ensured to fit tightly together and prevent shaking.
It effectively prevents the upper and lower sand boxes from shaking during the casting process, ensuring casting quality and improving the practicality and stability of the device.
Smart Images
Figure CN224011174U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sand box positioning and closing technology field, specifically is lost foam casting sand box positioning and closing device. BACKGROUND
[0002] Lost foam casting (also known as full mold casting) is a new type of casting method that wax or foam model similar in size and shape is bonded and combined into a model cluster, coated with refractory coating and dried, buried in dry quartz sand and vibrated to form a mold, poured under negative pressure, the model is gasified, liquid metal occupies the model position, and the casting is formed after solidification and cooling. In lost foam casting, the upper and lower sand boxes need to be closed.
[0003] Currently, when the sand boxes are closed, positioning pins are usually used for positioning outside to ensure that the upper and lower sand boxes are tightly combined. However, there is a lack of fixing structure during closing, which can easily cause the upper sand box to shake with the lower sand box during pouring, resulting in misalignment and seriously affecting the pouring process and reducing the quality. Therefore, we propose a lost foam casting sand box positioning and closing device. UTILITY MODEL CONTENT
[0004] The utility model aims to provide a lost foam casting sand box positioning and closing device to solve the problem of a lack of fixing structure during the current sand box closing, which can easily cause the upper sand box to shake with the lower sand box during pouring, resulting in misalignment and seriously affecting the pouring process and reducing the quality.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a lost foam casting sand box positioning and closing device, including upper sand box and lower sand box, the both sides of upper sand box are fixed with positioning rod, the both sides of lower sand box are fixed with positioning plate, the other two sides of lower sand box are provided with locking mechanism, the both sides bottom of lower sand box are provided with clamping mechanism.
[0006] The locking mechanism includes ear plates fixed symmetrically on the top of the other two sides of the upper sand box, the bottom of the other two sides of the lower sand box is fixed with a mounting seat, a rotating block is rotatably arranged in the mounting seat, a sleeve is fixed to the top of the rotating block, a screw rod penetrates through the top of the sleeve, a knob is screwed on the outer side of the screw rod, and a pressing plate is fixed to the top end of the screw rod.
[0007] Preferably, the locking mechanism further includes insertion holes symmetrically formed in the top of the ear plates, a connecting groove is formed in the top edge of the sleeve, connecting blocks are symmetrically fixed to the bottom of the knob, insertion rods are symmetrically fixed to the bottom of the pressing plate, limiting rods are symmetrically fixed between the inner cavities of the sleeve, and a circular plate is fixed to the bottom end of the screw rod.
[0008] Preferably, the round plate is slidably connected to the outer side of the limiting rod, and the round plate is located inside the sleeve.
[0009] Preferably, the outer side of the knob is provided with anti-skid lines, and one side of the ear plate is provided with a notch.
[0010] Preferably, the connecting block is connected to the inside of the connecting groove to limit the knob, so that the knob can only rotate, and the diameter of the insertion rod is equal to the diameter of the insertion hole.
[0011] Preferably, the clamping mechanism comprises two housings fixed symmetrically to the bottom of the lower sand box, an insertion hole is formed in the top of the housing, a slide rod is fixed symmetrically to the top of the housing between the inner sides of the housing, a slide plate is slidably connected to the outer side of the slide rod, a tension spring is fixed symmetrically to the sides of the slide plates away from each other, a connecting seat is fixed to the middle of the bottom of the slide plate, a deflection plate is rotatably arranged in the connecting seat, a moving plate is rotatably arranged between the two deflection plates, and a clamping block is fixed to the middle of the opposite side of the slide plate.
[0012] Preferably, the tension spring is sleeved on the outer side of the slide rod, and one end of the tension spring is fixed to the inner side wall of the housing, so as to facilitate the resetting of the moving plate.
[0013] Compared with the prior art, the utility model has the advantages that:
[0014] 1. The locking mechanism is arranged, after the positioning of the box, the sleeve is rotated, the rotating block is deflected in the installation seat, the sleeve is located in the vertical position, the knob is rotated, the limiting rod and the round plate are matched, when the knob is rotated, the screw rod is lowered, the pressing plate is lowered, the insertion rod is inserted into the insertion hole, the knob is continuously rotated, the pressing plate is pressed against the ear plate, the upper sand box and the lower sand box are tightly locked, the shaking is avoided, the stability of casting is ensured, the casting quality is prevented from being affected, and the practicality of the device is improved.
[0015] 2. The clamping mechanism is arranged, after the positioning rod is inserted into the positioning plate, the positioning rod is embedded in the insertion hole, the moving plate is extruded, the moving plate is lowered, the deflection plate is deflected in the vertical direction, the slide plates are close to each other, the tension spring is stretched, the clamping block clamps the positioning rod, the clamping is realized by the gravity, the primary locking is realized, the locking mechanism is matched, the device is fully locked, the tightness of the connection and positioning is ensured, and the shaking is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a whole structure schematic view of the utility model;
[0017] Figure 2The ear plate structure schematic diagram of the utility model;
[0018] Figure 3 The screw installation structure schematic diagram of the utility model;
[0019] Figure 4 The limiting rod installation structure schematic diagram of the utility model;
[0020] Figure 5 The clamping mechanism structure schematic diagram of the utility model.
[0021] The ear plate structure schematic diagram of the utility model. Specific implementation
[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.
[0023] Embodiment: as Figures 1-5 The utility model provides the technical scheme of lost foam casting sand box positioning and closing device, including upper sand box 100 and lower sand box 200, the both sides symmetry of upper sand box 100 are fixed with the positioning rod 110, the both sides symmetry of lower sand box 200 are fixed with the positioning plate 210, and the other two sides of lower sand box 200 are provided with locking mechanism 300, and the both sides bottom of lower sand box 200 are provided with clamping mechanism 400;
[0024] Please refer to Figures 2-4The locking mechanism 300 comprises the lug plates 310 symmetrically fixed to the other two top sides of the upper sand box 100, the mounting seats 320 fixed to the bottoms of the other two sides of the lower sand box 200, the rotating blocks 321 rotatably arranged in the mounting seats 320, the sleeves 330 fixed to the top of the rotating blocks 321, the screw rods 340 penetratingly connected to the middle of the top of the sleeves 330, the knobs 350 screw-connected to the outer side of the screw rods 340, the pressing plates 360 fixed to the top of the screw rods 340, the insertion holes 311 symmetrically penetratingly arranged in the top of the lug plates 310, the connecting grooves 331 arranged on the top of the sleeves 330, the connecting blocks 351 symmetrically fixed to the bottom of the knobs 350, the insertion rods 361 symmetrically fixed to the bottom of the pressing plates 360, the limiting rods 370 symmetrically fixed between the upper and lower sides of the inner cavities of the sleeves 330, the round plates 380 fixed to the bottom of the screw rods 340, the round plates 380 slidingly connected to the outer side of the limiting rods 370 and located in the inner cavities of the sleeves 330, the knobs 350 provided with the anti-skid lines on the outer side, the lug plates 310 provided with the notches on one side, the connecting blocks 351 connected to the inner side of the connecting grooves 331, and the insertion rods 361 provided with the same diameter as that of the insertion holes 311. By the arrangement of the locking mechanism 300, after the positioning and closing of the boxes, the sleeve 330 is rotated to make the rotating block 321 deflect in the mounting seat 320, the sleeve 330 is located in the vertical position, the knob 350 is rotated, the limiting rod 370 and the round plate 380 are matched, the screw rod 340 is lowered when the knob 350 is rotated, the pressing plate 360 is lowered, the insertion rod 361 is inserted into the insertion hole 311, the knob 350 is continuously rotated, the pressing plate 360 is pressed against the lug plate 310, the upper sand box 100 and the lower sand box 200 are tightly and closely locked, the shaking is avoided, the stability of the casting is ensured, the casting quality is prevented from being affected, and the practicability of the device is improved.
[0025] Please refer to Figure 5The clamping mechanism 400 comprises the outer shells 410 fixed symmetrically on the bottom of the lower sand box 200, the sockets 411 are arranged symmetrically on the top of the outer shells 410, the slide rods 420 are arranged symmetrically on the top of the inner sides of the outer shells 410, the slide plates 430 are arranged symmetrically on the outer sides of the slide rods 420, the extension springs 440 are arranged symmetrically on the sides away from each other of the two slide plates 430, the connecting seats 450 are arranged on the middle bottom of the slide plates 430, the deflection plates 460 are arranged rotatably in the connecting seats 450, the moving plates 470 are arranged rotatably between the two deflection plates 460, and the clamping blocks 480 are arranged on the middle sides of the two slide plates 430. The extension springs 440 are sleeved on the outer sides of the slide rods 420, and one end of the extension spring 440 is fixed to the inner side wall of the outer shell 410. When the positioning rod 110 is inserted into the positioning plate 210, the positioning rod 110 is embedded in the socket 411, the moving plate 470 is extruded, the moving plate 470 is lowered, the deflection plate 460 is deflected to the vertical direction, the slide plates 430 are close to each other, the extension spring 440 is stretched, the clamping block 480 clamps the positioning rod 110, the positioning rod 110 is clamped by the gravity, the positioning rod 110 is preliminarily locked, the locking mechanism 300 is matched, the device is fully locked, the connection and positioning are compact, and the shaking is avoided.
[0026] In use, when the upper sand box 100 and the lower sand box 200 are combined, the positioning rod 110 is inserted into the positioning plate 210, the positioning rod 110 is embedded in the socket 411, the moving plate 470 is extruded, the moving plate 470 is lowered, the deflection plate 460 is deflected to the vertical direction, the slide plates 430 are close to each other, the extension spring 440 is stretched, the clamping block 480 clamps the positioning rod 110, the positioning rod 110 is preliminarily locked, the positioning rod 110 is clamped by the gravity, the locking mechanism 300 is matched, the device is fully locked, the connection and positioning are compact, and the shaking is avoided.
[0027] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.
Claims
1. A positioning and closing device for lost foam casting sand box, characterized in that: It includes an upper sand box (100) and a lower sand box (200). Positioning rods (110) are symmetrically fixed on both sides of the upper sand box (100), and positioning plates (210) are symmetrically fixed on both sides of the lower sand box (200). Locking mechanisms (300) are provided on the other two sides of the lower sand box (200), and clamping mechanisms (400) are provided at the bottom of both sides of the lower sand box (200). The locking mechanism (300) includes ear plates (310) symmetrically fixed to the top of the other two sides of the upper sand box (100), mounting bases (320) fixed to the bottom of the other two sides of the lower sand box (200), rotating blocks (321) rotating inside the mounting bases (320), sleeves (330) fixed to the top of the rotating blocks (321), screws (340) penetrating the middle of the top of the sleeves (330), knobs (350) screwed to the outside of the screws (340), and pressure plates (360) fixed to the top of the screws (340).
2. The lost foam casting sand box positioning and closing device according to claim 1, characterized in that: The locking mechanism (300) also includes symmetrical insertion holes (311) that are opened through the top of the ear plate (310), a connecting groove (331) is provided on the top edge of the sleeve (330), a connecting block (351) is symmetrically fixed at the bottom of the knob (350), a plug rod (361) is symmetrically fixed at the bottom of the pressure plate (360), a limit rod (370) is symmetrically fixed between the upper and lower sides of the inner cavity of the sleeve (330), and a circular plate (380) is fixed at the bottom end of the screw (340).
3. The lost foam casting sand box positioning and closing device according to claim 2, characterized in that: The circular plate (380) is slidably connected to the outside of the limiting rod (370), and the circular plate (380) is located inside the sleeve (330).
4. The lost foam casting sand box positioning and closing device according to claim 1, characterized in that: The knob (350) has anti-slip texture on the outside, and the ear plate (310) has a slot on one side.
5. The lost foam casting sand box positioning and closing device according to claim 2, characterized in that: The connecting block (351) is connected to the inside of the connecting groove (331), and the diameter of the insert rod (361) is equal to the diameter of the insertion hole (311).
6. The lost foam casting sand box positioning and closing device according to claim 1, characterized in that: The clamping mechanism (400) includes a shell (410) symmetrically fixed to the bottom of both sides of the lower sand box (200). A slot (411) is provided through the top center of the shell (410). A slide rod (420) is symmetrically fixed to the top between the two sides inside the shell (410). A slide plate (430) is symmetrically slidably connected to the outside of the slide rod (420). Tension springs (440) are symmetrically fixed to the opposite sides of the two slide plates (430). A connecting seat (450) is fixed to the bottom center of the slide plate (430). A deflection plate (460) rotates inside the connecting seat (450). A moving plate (470) rotates between the two deflection plates (460). A clamping block (480) is fixed to the center of the opposite sides of the two slide plates (430).
7. The lost foam casting sand box positioning and closing device according to claim 6, characterized in that: The tension spring (440) is sleeved on the outside of the slide rod (420), and one end of the tension spring (440) is fixed to the inner wall of the outer shell (410).