Fixture for lost foam casting
By introducing flip components and clamping systems into the disappearing mold casting fixture, the problems of casting sand box displacement and dry quartz sand pouring are solved, and the stable fixation of casting sand box and automatic pouring of dry quartz sand are realized, which improves the Efficiency and practicality of disappearing mold casting.
Patent Information
- Application Number
- CN202420074601.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-12
AI Technical Summary
The existing disappearing mold casting fixtures cannot effectively fix the casting sand box, resulting in displacement during use affecting the casting accuracy. When removing the cooling-formed castings, it is necessary to manually pour out the heavy dry quartz sand, which consumes a lot of physical strength. , affects efficiency.
A fixture including positioning substrate, support side panel, support plate and cast sand box is designed. It adopts a low-speed motor, flip assembly and transmission worm gear system. The support plate makes the cast sand box turn over by flipping the components, and the dry quartz The sand is poured out and the cast sand box is secured by clamping components to avoid displacement.
The stable fixation of the casting sand box and the automatic pouring of dry quartz sand during the disappearing mold casting process are achieved, which reduces the labor intensity of staff and improves the efficiency and practicality of disappearing mold casting.
Smart Images
Figure CN222242547U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lost foam casting fixtures, in particular to a lost foam casting fixture. Background Art
[0002] Lost foam casting is a new casting method in which paraffin or foam models with similar size and shape to the casting are bonded together into a model cluster, coated with refractory paint and dried, buried in dry quartz sand for vibration molding, and poured under negative pressure to vaporize the model, so that liquid metal occupies the model position and forms a casting after solidification and cooling.
[0003] In the process of lost foam casting, in order to prevent the casting sand box from being displaced during use and affecting the pouring accuracy, a corresponding clamp is used to fix the casting sand box. However, the existing clamp for lost foam casting can only fix the casting sand box, and does not have the ability to flip the casting sand box to pour out the dry quartz sand after use. In addition, since the casting sand box filled with dry quartz sand has a heavy weight, the staff must use corresponding tools to take out the dry quartz sand inside the casting sand box little by little after taking out the cooled and formed castings. This not only consumes a lot of physical strength of the staff, but also affects the subsequent lost foam casting efficiency. Therefore, its practicality needs to be improved. Utility Model Content
[0004] The utility model aims to provide a fixture for lost foam casting to solve the problems raised in the above-mentioned background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A fixture for lost foam casting comprises a positioning base plate, a supporting side plate, a supporting table plate and a casting sand box, wherein the upper end surface of the positioning base plate is symmetrically fixedly connected with the supporting side plates on both sides, the supporting table plate is installed on the inner side of the supporting side plate, a casting sand box for lost foam casting is placed on the upper end surface of the supporting table plate, a clamping assembly for fixing the casting sand box is provided on the upper end surface of the supporting table plate to prevent the casting sand box from being displaced during use, a flipping assembly is provided on the side of the supporting table plate, and the flipping assembly is used to flip the supporting table plate so that the supporting table plate drives the casting sand box to flip and pour out the dry quartz sand remaining inside.
[0007] Preferably, the clamping assembly includes a first low-speed motor, a fixed clamp, a movable seat and a double-threaded screw. The first low-speed motor is installed in the middle position of the rear end surface of the support table. The front end of the first low-speed motor is connected to a double-threaded screw. Moving seats are provided on both the front and rear sides of the annular side of the double-threaded screw, and a fixed clamp is provided on the upper end of the movable seat.
[0008] Preferably, the flipping assembly includes a second low-speed motor, a second support shaft, a transmission worm gear and a worm. A second support shaft is installed in the middle position of the right end surface of the support table. A transmission worm gear is arranged on the right side of the annular side surface of the second support shaft. A worm gear is meshed on the upper side of the annular side surface of the transmission worm gear. A second low-speed motor is installed at the rear end of the worm gear.
[0009] Preferably, a first support shaft is installed in the middle of the left end surface of the support table, the diameter of the first support shaft is the same as the diameter of the second support shaft, and a limiting vertical rod is fixedly connected to the rear side of the upper end surface of the positioning base plate.
[0010] Preferably, a limiting groove is provided on the upper surface of the support table, and the limiting groove matches the movable seat, an internal threaded through hole is provided inside the movable seat, and the internal threaded through hole is meshed with the double-threaded screw rod.
[0011] Preferably, the limiting groove is arranged in the middle position of the upper end surface of the support table, and the external thread on the front side of the annular side of the double-threaded screw rotates in opposite directions to the external thread on the rear side of the annular side.
[0012] Preferably, a vibration motor is installed at the middle position of the lower end surface of the support table, and a rubber vibration isolation pad is pasted on the lower end surface of the positioning base plate.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. The utility model can control the second low-speed motor to reverse, so that the second low-speed motor can drive the worm to reverse, so that the worm drives the supporting plate to turn downward through the transmission worm gear and the second supporting shaft, and the supporting plate will drive the casting sand box to turn downward together to pour out the dry quartz sand inside the casting sand box, which not only reduces the labor intensity of the staff, but also does not affect the subsequent lost foam casting efficiency, and has good practicality;
[0015] 2. Before the lost foam casting is carried out, the first low-speed motor drives the double-threaded screw to rotate forwardly, so that the moving seats on the front and rear sides drive the front and rear two sets of fixed clamps to move inward synchronously to clamp and fix the casting sand box, thereby avoiding displacement of the casting sand box during the lost foam casting process to affect the pouring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the main structure of the utility model;
[0017] Figure 2 It is a structural diagram of the flip assembly and the clamping assembly in the utility model;
[0018] Figure 3 It is a front cross-sectional view of the flip assembly and the clamping assembly in the utility model;
[0019] Figure 4 It is a right side cross-sectional view of the flip assembly and the clamping assembly in the utility model;
[0020] Figure 5 It is a partial structural diagram of the flip assembly and the clamping assembly in the utility model;
[0021] Figure 6 It is a partial structural diagram of the clamping assembly in the utility model;
[0022] Figure 7 It is a right side cross-sectional view after the turning assembly in the utility model turns over the casting sand box.
[0023] In the figure: 1. Positioning base plate; 11. Rubber seismic isolation pad; 2. Support side plate; 3. Flipping assembly; 31. Second low-speed motor; 32. Limiting vertical rod; 33. First support shaft; 34. Second support shaft; 35. Transmission worm gear; 36. Worm; 4. Support table; 5. Clamping assembly; 51. First low-speed motor; 52. Fixed splint; 53. Limiting groove; 54. Moving seat; 55. Double-threaded screw; 6. Casting sand box; 7. Vibration motor. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] See also Figure 1-7 , the utility model provides a technical solution:
[0026] Embodiment 1:
[0027] A fixture for lost foam casting comprises a positioning base plate 1, a supporting side plate 2, a supporting table plate 4 and a casting sand box 6. The left and right sides of the upper end surface of the positioning base plate 1 are symmetrically fixedly connected with the supporting side plates 2, the supporting side plates 2 will support the flip assembly 3, the inner side of the supporting side plate 2 is installed with a supporting table plate 4, the supporting table plate 4 will support the casting sand box 6, a casting sand box 6 for lost foam casting is placed on the upper end surface of the supporting table plate 4, a vibration motor 7 is installed in the middle position of the lower end surface of the supporting table plate 4, the vibration motor 7 will drive the supporting table plate 4 to vibrate when working, so that the supporting table plate 4 drives the casting sand box 6 to vibrate, thereby vibrating and shaping the dry quartz sand in the casting sand box 6, a rubber isolation pad 11 is pasted on the lower end surface of the positioning base plate 1, the rubber isolation pad 11 will absorb most of the vibration transmitted from the positioning base plate 1, and avoid the vibration motor 7 from generating a large resonance noise between the positioning base plate 1 and the ground when the vibration motor 7 is working.
[0028] The upper end surface of the support table 4 is provided with a clamping assembly 5 for fixing the casting sand box 6 to prevent the casting sand box 6 from being displaced during use. A flip assembly 3 is provided on the side of the support table 4, and the flip assembly 3 is used to flip the support table 4 so that the support table 4 drives the casting sand box 6 to flip and pour out the dry quartz sand remaining inside. A control panel is installed on the upper side of the front end surface of the support side plate 2, and the control panel is connected to the first low-speed motor 51, the second low-speed motor 31 and the vibration motor 7 through wires. The control panel facilitates the staff to control the operation of the first low-speed motor 51, the second low-speed motor 31 and the vibration motor 7 respectively. Since the control principle and internal detailed structure of the control panel are relatively mature technologies in the prior art, they will not be described in detail here.
[0029] The clamping assembly 5 includes a first low-speed motor 51, a fixed clamp plate 52, a movable seat 54 and a double-threaded screw 55. The first low-speed motor 51 is installed in the middle position of the rear end surface of the support plate 4. The first low-speed motor 51 will drive the double-threaded screw 55 to rotate. The front end of the first low-speed motor 51 is connected to the double-threaded screw 55. The external thread on the front side of the annular side of the double-threaded screw 55 rotates in opposite directions to the external thread on the rear side of the annular side. When the double-threaded screw 55, whose external thread on the front side of the annular side and the external thread on the rear side of the annular side rotate in opposite directions, the front and rear movable seats 54 will move synchronously in opposite directions.
[0030] The double-threaded screw rod 55 is provided with a moving seat 54 on both sides of the front and rear sides of the annular side. The moving seat 54 is connected to the fixed clamping plate 52 by welding. There are two groups of moving seats 54, and the two groups of moving seats 54 have the same specifications. The moving seat 54 will drive the fixed clamping plate 52 to move forward and backward. The upper end of the moving seat 54 is provided with a fixed clamping plate 52. There are two groups of fixed clamping plates 52, and the two groups of fixed clamping plates 52 have the same specifications. The two groups of fixed clamping plates 52 will clamp and fix the casting sand box 6. The inner wall of the fixed clamping plate 52 is provided There are anti-slip patterns, which make the inner wall of the fixed splint 52 more anti-slip. A limiting groove 53 is provided on the upper end surface of the support table 4, and the limiting groove 53 matches the movable seat 54. The limiting groove 53 is provided in the middle position of the upper end surface of the support table 4. The limiting groove 53 prevents the movable seat 54 from deflecting or swinging during the mobile use. An internal threaded through hole is provided inside the movable seat 54, and the internal threaded through hole is meshed with the double-threaded screw 55. The internal threaded through hole enables the movable seat 54 to move forward and backward.
[0031] Embodiment 2:
[0032] On the basis of Example 1, in this embodiment, by controlling the second low-speed motor 31 to reverse, the second low-speed motor 31 can drive the worm 36 to reverse, so that the worm 36 drives the support plate 4 to flip downward through the transmission worm gear 35 and the second support shaft 34, and the support plate 4 will drive the casting sand box 6 to flip downward together to pour out the dry quartz sand inside the casting sand box 6, which not only reduces the labor intensity of the staff, but also does not affect the subsequent lost foam casting efficiency.
[0033] The flipping assembly 3 includes a second low-speed motor 31, a second support shaft 34, a transmission worm gear 35 and a worm 36. The second support shaft 34 is installed in the middle position of the right end surface of the support table 4. The second support shaft 34 is connected to the transmission worm gear 35 by welding. The second support shaft 34 will drive the support table 4 to flip up and down. A transmission worm gear 35 is provided on the right side of the annular side of the second support shaft 34. The transmission worm gear 35 will drive the second support shaft 34 to rotate. A worm 36 is meshed on the upper side of the annular side of the transmission worm gear 35, and the worm 36 will drive the transmission worm gear 35 to rotate.
[0034] A second low-speed motor 31 is installed at the rear end of the worm 36, and the second low-speed motor 31 will drive the worm 36 to rotate. A limiting vertical rod 32 is fixedly connected to the rear side of the upper end surface of the positioning base plate 1, and the limiting vertical rod 32 will block and limit the upward flipping support table 4, so that the support table 4 can be easily flipped upward to a horizontal position. A first support shaft 33 is installed in the middle position of the left end surface of the support table 4. The diameter of the first support shaft 33 is the same as that of the second support shaft 34. The first support shaft 33 and the second support shaft 34 are in the same horizontal line in terms of horizontal position. The first support shaft 33, which is in the same horizontal line as the second support shaft 34 and has the same diameter, makes the support table 4 more stable when flipping.
[0035] Working principle: When lost foam casting is required, the staff first places the casting sand box 6 on the upper end surface of the supporting table 4, and then pours a proper amount of dry quartz sand into the casting sand box 6. At this time, the external foam model that has been coated with refractory paint and dried can be buried in the dry quartz sand inside the casting sand box 6. Then the staff controls the first low-speed motor 51 to rotate forward through the control panel, so that the first low-speed motor 51 drives the double-threaded screw rod 55 to rotate forward together. At this time, under the thread engagement force, the moving seats 54 on the front and rear sides will drive the front and rear two sets of fixed clamps 52 to move inward synchronously to clamp and fix the casting sand box 6 (reference Figure 1), to avoid displacement of the casting sand box 6, and then the staff starts the vibration motor 7 through the control panel, so that the vibration motor 7 drives the casting sand box 6 to vibrate through the support plate 4, so as to vibrate and shape the dry quartz sand in the casting sand box 6. After the vibration shaping, the vibration motor 7 can be turned off, and the external foam model buried in the dry quartz sand inside the casting sand box 6 can be poured at this time, so that the external foam model can be gasified, and the liquid metal will occupy the model position and solidify and cool to form the required casting; when the casting is cooled and formed, the staff can take the formed casting out of the casting sand box 6, and then control the second low-speed motor 31 to reverse through the control panel, so that the second low-speed motor 31 drives the worm 36 to reverse, and the worm 36 will drive the second support shaft 34 to flip through the transmission worm gear 35, so that the second support shaft 34 drives the support plate 4 to flip downward, and the support plate 4 will drive the casting sand box 6 to flip downward together (reference Figure 7 ), so as to pour out the dry quartz sand inside the casting sand box 6; when all the dry quartz sand inside the casting sand box 6 is poured out, the staff controls the second low-speed motor 31 to rotate forward, so that the worm 36 can drive the transmission worm wheel 35 to rotate forward, and then the transmission worm wheel 35 drives the support table 4 to flip upward through the second support shaft 34, and the support table 4 will drive the casting sand box 6 to flip upward together. During this process, the limit vertical rod 32 will block and limit the support table 4 so that the support table 4 can flip upward to a horizontal position; when the support table 4 flips to a horizontal position, the staff controls the first low-speed motor 51 to reverse, so that the double-threaded screw 55 can drive the moving seats 54 on the front and rear sides to move synchronously outward, and the two groups of moving seats 54 will drive the front and rear two groups of fixed splints 52 to move synchronously outward, so that the staff can take away the casting sand box 6.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fixture for lost foam casting, comprising a positioning base plate (1), a supporting side plate (2), a supporting table plate (4) and a casting sand box (6), characterized in that: The upper end surface of the positioning base plate (1) is symmetrically fixedly connected to support side plates (2) on both sides, the inner side of the support side plates (2) is installed with a support table plate (4), and the upper end surface of the support table plate (4) is placed with a casting sand box (6) for lost foam casting; The upper end surface of the support plate (4) is provided with a clamping assembly (5) for fixing the casting sand box (6) to prevent the casting sand box (6) from being displaced during use. The side of the support plate (4) is provided with a flipping assembly (3), and the flipping assembly (3) is used to flip the support plate (4) so that the support plate (4) drives the casting sand box (6) to flip and pour out the dry quartz sand remaining inside.
2. A fixture for lost foam casting according to claim 1, characterized in that: The clamping assembly (5) comprises a first low-speed motor (51), a fixed clamping plate (52), a movable seat (54) and a double-threaded screw (55); the first low-speed motor (51) is installed in the middle position of the rear end surface of the support table (4); the front end of the first low-speed motor (51) is connected to the double-threaded screw (55); the movable seat (54) is arranged on both the front and rear sides of the annular side surface of the double-threaded screw (55); and the upper end of the movable seat (54) is arranged with a fixed clamping plate (52).
3. The fixture for lost foam casting according to claim 1, characterized in that: The flip assembly (3) comprises a second low-speed motor (31), a second support shaft (34), a transmission worm gear (35) and a worm (36); the second support shaft (34) is installed at the middle position of the right end surface of the support table (4); a transmission worm gear (35) is arranged on the right side of the annular side surface of the second support shaft (34); a worm gear (36) is meshed on the upper side of the annular side surface of the transmission worm gear (35); and the second low-speed motor (31) is installed at the rear end of the worm gear (36).
4. The fixture for lost foam casting according to claim 3, characterized in that: A first support shaft (33) is installed in the middle of the left end surface of the support platform (4); the diameter of the first support shaft (33) is the same as the diameter of the second support shaft (34); and a limiting vertical rod (32) is fixedly connected to the rear side of the upper end surface of the positioning base plate (1).
5. The fixture for lost foam casting according to claim 2, characterized in that: The upper end surface of the support table (4) is provided with a limiting groove (53), and the limiting groove (53) matches the movable seat (54). The movable seat (54) is provided with an internal threaded through hole, and the internal threaded through hole is meshed with a double-threaded screw rod (55).
6. The fixture for lost foam casting according to claim 5, characterized in that: The limiting groove (53) is arranged at the middle position of the upper end surface of the support table (4); the external thread on the front side of the annular side of the double-threaded screw rod (55) and the external thread on the rear side of the annular side have opposite rotation directions.
7. The fixture for lost foam casting according to claim 1, characterized in that: A vibration motor (7) is installed at the middle position of the lower end surface of the support platform (4), and a rubber vibration isolation pad (11) is adhered to the lower end surface of the positioning base plate (1).