Clamping plate mould for automatically repairing sand core
The splint jig structure monitored by a magnetic pressure head and infrared sensor solves the problem of unstable sand core position, realizes automated monitoring and efficient core repair, avoids sand core scrapping, and improves production efficiency and equipment life.
Patent Information
- Application Number
- CN202422542792.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing core repair jigs are unstable in the position of the sand cores during high-efficiency production, resulting in poor core repair results and even causing the sand cores to be scrapped. Frequent manual monitoring of wear is also required.
The magnetic pressure head and magnetic groove structure, combined with infrared sensor monitoring, ensure that the upper clamping plate and the bottom plate are tightly connected, realize automatic monitoring of the sand core position, and improve stability and core repair quality.
It improves the stability of sand core position and core repair quality, reduces the need for manual monitoring, extends the service life of equipment, reduces costs and improves work efficiency.
Smart Images
Figure CN223352882U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sand core repair auxiliary tools, in particular to a splint jig for automatic sand core repair. Background Art
[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.
[0003] Sand cores are made from a specific mixture of foundry sand, resin, and additives, resulting in a solid structure with a specific shape. They are used to form the inner cavities, holes, and exterior surfaces of castings where sand cannot be removed. After core making, the core is manually placed onto a corresponding core-repairing jig. The core is then transferred to a robotic core-repairing station, where it is automatically deburred. After core repair is complete, the core is transferred to the next manual station, where it is manually removed and transported to the core assembly station for assembly.
[0004] The existing core repair jig consists of a base plate with a groove for placing the core head. The sand core is installed on the base plate through the core head. During the core repair process, the base plate and the sand core need to undergo two rotations. During the rotation process, the position of the sand core is completely controlled by the sand core's own gravity and the fitting clearance between the core head and the base plate. However, with the continuous improvement of production efficiency and the increasing number of uses, the jig rotation rate increases and the fitting clearance wears, causing the sand core to move during the rotation process. At present, on the one hand, the clearance is regularly monitored manually using a feeler gauge, and on the other hand, the operator performs auxiliary monitoring based on the automatic deburring effect. The above-mentioned core repair jig needs to frequently monitor the fitting clearance, resulting in low efficiency of the core repair effect. At the same time, if the wear position cannot be detected in time, the automatic core repair and deburring effect will be poor, and in severe cases, the sand core may be scrapped. Therefore, the existing core repair jig has poor sand core position stability, which is prone to cause poor batch core repair or waste core problems. Utility Model Content
[0005] The utility model aims to provide a splint jig for automatic sand core repair, which can improve the stability of the sand core position, reduce the wear between the sand core and the base plate, improve the quality of sand core repair, and avoid the occurrence of poor repair or waste core problems.
[0006] In order to achieve the above purpose, the present invention is implemented through the following technical solutions:
[0007] In the first aspect, an embodiment of the utility model provides a splint jig for automatic core repair of sand cores, comprising a bottom plate and an upper splint, wherein one side of the bottom plate and the upper splint are hinged, a magnetic pressure head is provided on the upper splint, and a magnetic groove is provided on the bottom plate. When the upper splint falls on the bottom plate, the magnetic pressure head is placed in the magnetic groove, and under the action of magnetism, the upper splint presses the core head of the sand core.
[0008] As a further technical solution, the magnetic pressure head is provided with a first mating surface, a second mating surface and a third mating surface which are sequentially connected to the upper clamping plate, and the diameters of the first mating surface, the second mating surface and the third mating surface decrease sequentially.
[0009] As a further technical solution, a fourth mating surface, a fifth mating surface and a sixth mating surface are sequentially arranged in the magnetic attraction groove from top to bottom, and the diameters of the fourth mating surface, the fifth mating surface and the sixth mating surface decrease sequentially.
[0010] As a further technical solution, when the magnetic pressure head is placed in the magnetic groove, the first mating surface is in contact with the fourth mating surface, the second mating surface is in contact with the fifth mating surface, and the third mating surface is in contact with the sixth mating surface.
[0011] As a further technical solution, an infrared sensor is provided at the lower portion of the sixth mating surface, and the infrared sensor is provided in a mounting hole on the sixth mating surface.
[0012] As a further technical solution, the infrared sensor is electrically connected to an indicator light module, and the indicator light module is installed in the middle position of the base plate.
[0013] As a further technical solution, the bottom plate and one side of the upper clamping plate are connected via a plurality of hinges.
[0014] As a further technical solution, handles are provided on both the bottom plate and the upper splint.
[0015] As a further technical solution, two magnetic pressure heads are provided, and the two magnetic pressure heads are symmetrically arranged on the left and right. Two magnetic grooves are provided, and the two magnetic grooves are symmetrically arranged on the left and right.
[0016] As a further technical solution, the upper clamping plate is provided with two through holes corresponding to the bottom plate.
[0017] The beneficial effects of the above embodiments of the present invention are as follows:
[0018] The utility model provides a clamping jig for automatic core repair of sand cores, which can press the core head of the sand core onto the bottom plate through the upper clamping plate provided, which not only improves the accuracy of the sand core position and ensures the quality of core repair, but also realizes automatic monitoring of the pressing effect, replaces manual monitoring, improves work efficiency, reduces the labor intensity of workers, extends the service life of the jig and the pressure head, reduces costs, and provides a basis for the design of clamping jigs for batch core repair.
[0019] The splint jig for automatic core repair of sand cores provided by the utility model presses the upper pressure plate tightly above the base plate through the magnetic effect between the magnetic pressure head and the magnetic groove. The magnetic suction method is simple to operate when used, and the sand core can be quickly installed and removed from the base plate, thereby improving the core repair efficiency of the sand core. In addition, three mating surfaces with different diameters are provided on the magnetic pressure head, forming a three-level prevention and control, with a higher safety coefficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0021] Figure 1 This is a schematic diagram of the overall structure of a plywood jig for automatic sand core repairing of the present invention;
[0022] Figure 2 This is a schematic diagram of the upper splint of the splint jig for automatic core repairing of the sand core of the present invention when it falls;
[0023] Figure 3 This is a schematic structural diagram of the magnetic pressure head of the present invention;
[0024] Figure 4 It is a structural schematic diagram of the magnetic groove of the utility model.
[0025] The diagram is for illustrative purposes only;
[0026] Among them, 1. Upper splint; 101. Through hole; 2. Bottom plate; 3. Magnetic pressure head; 301. First mating surface; 302. Second mating surface; 303. Third mating surface; 4. Magnetic groove; 401. Fourth mating surface; 402. Fifth mating surface; 403. Sixth mating surface; 404. Mounting hole; 5. Handle; 6. Sand core; 601. Core head; 7. Hinge; 8. Indicator light module; 801. Indicator light; 9. Infrared sensor. DETAILED DESCRIPTION
[0027] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0028] Explanation of relevant terms:
[0029] Sand core: A solid structure with a special shape made by mixing casting sand, resin and some additives in a certain proportion. It is used to form the inner cavity, holes and parts of the casting shape where sand cannot be removed.
[0030] Burr: A flaky sand layer that is higher than the sand core surface is formed on the parting surface of the sand core.
[0031] Core head: The protruding part on the pattern, which forms the core seat in the mold and places the core head.
[0032] Example 1
[0033] When the existing sand core is repaired, there is only the bottom plate, which can be referred to Figure 1 The base plate 2 in the middle, the sand core 6 is engaged in the groove on the base plate 2 through the core head. Considering that the sand core needs to be removed from the base plate after the core repair is completed, the groove on the base plate and the core head cannot be an interference fit. The position of the sand core can only be controlled by the sand core's own gravity and the clearance between the core head and the base plate. When wear occurs in the groove, the sand core is easy to move, resulting in poor effect of automatic core repair and deburring.
[0034] In order to solve the background technology and the above-mentioned technical problems, in a typical embodiment of the present invention, Figure 1 and Figure 2 As shown, a splint jig for automatic core repairing of sand cores is provided, comprising a base plate 2 and an upper splint 1, wherein the base plate 2 and one side of the upper splint 1 are hinged, a magnetic pressure head 3 is provided on the upper splint 1, and a magnetic groove 4 is provided on the base plate 2. When the upper splint 1 falls on the base plate 2, the magnetic pressure head 3 is placed in the magnetic groove 4, and under the action of magnetism, the upper splint 1 presses the core head 601 of the sand core 6.
[0035] like Figure 3 As shown, the magnetic pressure head 3 is composed of multiple cylinders, and the magnetic pressure head is arranged on the lower surface of the upper clamping plate 1. The magnetic pressure head 3 is provided with a first mating surface 301, a second mating surface 302 and a third mating surface 303 which are connected to the upper clamping plate 1 in sequence. The diameters of the first mating surface 301, the second mating surface 302 and the third mating surface 303 decrease in sequence.
[0036] Furthermore, two magnetic pressure heads 3 are provided, which are respectively located at the two corners of the opening and closing sides of the upper clamping plate 1, and the two magnetic pressure heads 3 are symmetrically arranged on the left and right.
[0037] like Figure 4 As shown, the shape of the magnetic groove 4 matches the shape of the magnetic pressure head 3. The magnetic groove 4 is composed of multiple cylindrical grooves. The fourth mating surface 401, the fifth mating surface 402 and the sixth mating surface 403 are arranged in sequence from top to bottom in the magnetic groove 4. The diameters of the fourth mating surface 401, the fifth mating surface 402 and the sixth mating surface 403 decrease in sequence.
[0038] Furthermore, there are two magnetic grooves 4, which are located at the two corners of the opening and closing sides of the bottom plate 2, and the two magnetic grooves 4 are symmetrically arranged on the left and right. The positions of the magnetic grooves 4 correspond to the positions of the magnetic pressure head 3 and the sizes match.
[0039] When the magnetic pressure head is placed in the magnetic groove, the first mating surface 301 is in contact with the fourth mating surface 401 , the second mating surface 302 is in contact with the fifth mating surface 402 , and the third mating surface 303 is in contact with the sixth mating surface 403 .
[0040] By setting the magnetic pressure head 3 and the magnetic groove 4 into a variable diameter structure, the contact area between the magnetic pressure head 3 and the magnetic groove 4 can be increased, so that the upper clamping plate 1 can be tightly pressed on the bottom plate 2, thereby improving the stability of the sand core during rotation.
[0041] In this embodiment, the bottom plate 2 and one side of the upper splint 1 are connected by a plurality of hinges 7, so that the upper splint 1 and the bottom plate 2 can be opened and closed at a certain angle.
[0042] In order to monitor whether the upper clamping plate 1 and the bottom plate 2 are clamped, an infrared sensor 9 is provided at the lower portion of the sixth mating surface 403 , and the infrared sensor 9 is provided in the mounting hole 404 on the sixth mating surface.
[0043] Furthermore, the infrared sensor 9 is electrically connected to the indicator light module 8, and the indicator light module 8 is installed in the middle position of the base plate 2. The indicator light module 8 includes an indicator light 801 and a microcontroller unit. A through hole is provided at the position of the upper splint 1 corresponding to the indicator light, and the indicator light 801 can pass through the through hole of the upper splint 1 and be exposed from the upper splint 1.
[0044] The specific monitoring principle is as follows: the infrared sensor 9 monitors the distance between the mounting hole position and the other side wall in real time, and transmits the signal to the micro control unit in real time. The micro control unit is provided with a distance threshold. When the upper splint 1 and the base plate 2 are clamped, the magnetic pressure head 3 is placed in the magnetic groove 4, and the third mating surface 303 is in contact with the sixth mating surface 403. If the signal detected by the infrared sensor 9 is less than the distance threshold, the micro control unit controls the indicator light 801 to display green. When the upper splint 1 and the base plate 2 are not clamped, at this time, when the magnetic pressure head 3 is placed in the magnetic groove 4, the bottom of the third mating surface 303 cannot reach the bottom of the sixth mating surface 403, the signal detected by the infrared sensor 9 is equal to the distance threshold, and the micro control unit controls the indicator light 801 to display red.
[0045] In this embodiment, the infrared sensor 9, the indicator light 801 and the micro control unit all adopt existing structures, and the control method adopted is existing technology. This embodiment does not involve improvements to circuits and computer programs.
[0046] In this embodiment, handles 5 are provided on both the bottom plate 2 and the upper plate 1 to facilitate opening and closing of the upper plate 1 and the bottom plate 2 .
[0047] In this embodiment, the upper clamping plate 1 is provided with two through holes 101 corresponding to the bottom plate 2 to avoid affecting the core repairing process of the sand core.
[0048] Automatic core repair cycle process: manually place the sand core on the core repair jig, manually drop the upper splint 1, and the magnetic pressure heads 3 on both sides suck the upper splint 1 tightly under the action of magnetic attraction. After the jig rotates to the robot's automatic core repair station, the robot completes the automatic core repair, and the jig continues to rotate to the manual station, where the repaired sand core is manually taken out for the next core assembly operation.
[0049] Working process of the clamping jig and the suction head device: After manually placing the sand core 6 on the bottom plate 2, the upper clamping plate 1 is dropped. The magnetic suction head 3 tightly attracts the upper clamping plate 1 and the bottom plate 2 together under the action of magnetic attraction. The mating surfaces are in contact with each other. The infrared sensor 9 senses the position and gives a release signal. The indicator light 801 turns green. If the mating surfaces are not in contact with each other, the infrared sensing signal is interrupted, the indicator light 801 turns red and the jig does not move. After the jig reaches the next station, the robot automatically repairs the core. After the action is completed, the jig rotates to the next station. The upper clamping plate 1 is manually opened, and the sand core is taken out and then dropped. The jig rotates to the manual loading station and the unrepaired sand core is placed on the jig. This cycle is repeated to perform the sand core repair work.
[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A splint jig for automatic core repairing of sand cores, characterized in that: It includes a base plate and an upper clamping plate, one side of the base plate and the upper clamping plate are hinged, the upper clamping plate is provided with a magnetic pressure head, and the base plate is provided with a magnetic groove. When the upper clamping plate falls on the base plate, the magnetic pressure head is placed in the magnetic groove, and under the action of magnetism, the upper clamping plate presses the core head of the sand core.
2. The splint jig for automatic core repairing of sand cores according to claim 1, characterized in that: The magnetic pressure head is provided with a first mating surface, a second mating surface and a third mating surface which are sequentially connected to the upper clamping plate, and the diameters of the first mating surface, the second mating surface and the third mating surface decrease sequentially.
3. The splint jig for automatic core repairing of sand cores according to claim 2, characterized in that: A fourth mating surface, a fifth mating surface and a sixth mating surface are sequentially arranged in the magnetic attraction groove from top to bottom, and the diameters of the fourth mating surface, the fifth mating surface and the sixth mating surface decrease sequentially.
4. The splint jig for automatic core repairing of sand cores according to claim 3, characterized in that: When the magnetic pressure head is placed in the magnetic groove, the first mating surface is in contact with the fourth mating surface, the second mating surface is in contact with the fifth mating surface, and the third mating surface is in contact with the sixth mating surface.
5. The splint jig for automatic sand core repairing according to claim 3, characterized in that: An infrared sensor is provided at the lower portion of the sixth mating surface, and the infrared sensor is arranged in the mounting hole on the sixth mating surface.
6. The splint jig for automatic core repairing of sand cores according to claim 5, characterized in that: The infrared sensor is electrically connected to the indicator light module, and the indicator light module is installed in the middle position of the bottom plate.
7. The splint jig for automatic core repairing of sand cores according to claim 1, characterized in that: The bottom plate and one side of the upper clamping plate are connected via a plurality of hinges.
8. The splint jig for automatic sand core repairing according to claim 1, characterized in that: The bottom plate and the upper clamping plate are both provided with handles.
9. The splint jig for automatic core repairing of sand cores according to claim 1, characterized in that: There are two magnetic pressure heads, which are symmetrically arranged on the left and right. There are two magnetic grooves, which are symmetrically arranged on the left and right.
10. The splint jig for automatic sand core repairing according to claim 1, characterized in that: The upper clamping plate is provided with two through holes corresponding to the bottom plate.