Built-in exhaust ejector rod device of sliding fork sand core box
By designing a built-in exhaust pole device for sliding fork sand core box, the problems of poor exhaust gas, sand injection blind spots and exhaust plug replacement in traditional devices are solved, and the high density and surface quality of the sand core are achieved, reducing the thickness of the sand core. Production and maintenance costs.
Patent Information
- Application Number
- CN202420444684.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-08
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-08
AI Technical Summary
Traditional sand core manufacturing devices have problems such as poor exhaust gas, blind spots for sand injection and difficulty in replacing exhaust plugs, which affect the compactness and surface quality of the sand core and increase production costs and maintenance workload.
Design a built-in exhaust pole device for sliding fork sand core box, including a static mold core box body, a moving mold core box body, a sand injection port, an exhaust pole and an exhaust plug, which is injected through the combined core box body. Core sand, and use exhaust poles and exhaust plugs to achieve the functions of exhaust and sand core ejection.
This device effectively solves the problems of sand injection blind spots and poor exhaust, ensures the compactness and surface quality of the sand core, simplifies the replacement process of exhaust plugs, and reduces production costs and maintenance workload.
Smart Images
Figure CN222448124U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of core making by casting technology, in particular to a sliding fork sand core box with a built-in exhaust ejector rod device. Background Art
[0002] In the field of core making in casting process, the manufacture of sand cores is a crucial link. Due to its structural and functional limitations, traditional sand core manufacturing devices often have the problem of poor exhaust, which makes it impossible to completely expel the air inside the sand core during the curing process, thus affecting the density of the sand core. In addition, when the traditional device handles slender sand cores, due to its special shape, there are blind spots in the sand shooting process, which makes it impossible for some parts of the sand core to be filled with sand, resulting in insufficient integrity of the sand core and reduced surface quality. These problems not only affect the quality of the product, but also increase production costs and maintenance workload. At the same time, the exhaust plug in the existing device is difficult to replace after long-term use or damage, which further increases the maintenance time and cost. Therefore, in order to solve these problems, there is an urgent need for a new type of sand core manufacturing device that can provide better exhaust effect, improve the integrity and surface quality of the sand core, and facilitate maintenance and replacement of parts. Utility Model Content
[0003] (I) Purpose of the utility model
[0004] In view of this, the purpose of the utility model is to provide a sliding fork sand core box with a built-in exhaust ejector rod device to solve the problems raised in the above background.
[0005] (II) Technical solution
[0006] A sliding fork sand core box with a built-in exhaust ejector rod device comprises a static mold core box body, a dynamic mold core box body, a sand shooting port, a first exhaust hollow ejector rod, a second exhaust hollow ejector rod, an exhaust plug, a slender sand core head, a sand core assembly, and a common ejector rod. The static mold core box body and the dynamic mold core box body are merged with each other, and after the static mold core box body and the dynamic mold core box body are merged, the core sand is shot into the core box from the sand shooting port, the gas in the core box is completely discharged from the exhaust hole, and at the same time, the core sand fills each area including the blind area. After the core sand is solidified, the slender sand core head is ejected by pushing the first exhaust hollow ejector rod, the second exhaust hollow ejector rod and the common ejector rod on the baffle plate.
[0007] Preferably, the first exhaust hollow push rod and the second exhaust hollow push rod are not easy to deform. The hollow push rod that is not easy to deform can ensure that the position and angle of the push rod remain stable during the process of ejecting the sand core, which avoids the uneven ejection force caused by the deformation of the push rod, thereby ensuring the integrity of the sand core.
[0008] Preferably, the exhaust plug can be ejected through the hollow area of the first exhaust hollow ejector rod after being damaged after a long period of use. By ejecting the exhaust plug through the hollow area, the risk of further damage or injury to the core box when it is directly pulled out can be reduced. In addition, since the maintenance and replacement process is simple, the demand for professional maintenance personnel can be reduced, further reducing production costs.
[0009] Preferably, the exhaust plug is movably installed in the first exhaust hollow push rod. Through the movable installation, the exhaust plug can better adapt to different working conditions and sand core changes, and maintain stable operation of the device.
[0010] It can be seen from the above technical solutions that the present application has the following beneficial effects:
[0011] 1. The utility model is applicable to any sand core, especially the blind area of slender sand core which is difficult to be shot by sand in actual operation, which effectively solves the problem of blind area of sand shooting. The device can push out the sand core. The device can ensure smooth exhaust, the density of the sand core, the integrity of the sand core, and the surface quality of the sand core, thereby ensuring product quality.
[0012] 2. The utility model adopts the device to replace the common device, and the device can easily replace the damaged exhaust plug, thereby improving the core making efficiency and saving the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the structure of the utility model;
[0014] Figure 2 It is a schematic diagram of the local structure of the utility model;
[0015] Figure 3 For this utility model Figure 1 The enlarged schematic diagram at A in the middle;
[0016] Figure 4 For this utility model Figure 1 Enlarged schematic diagram of point B in the middle.
[0017] In the figure: 1. static mold core box body; 2. dynamic mold core box body; 3. sand shooting port; 4. first exhaust hollow ejector pin; 411. second exhaust hollow ejector pin; 5. exhaust plug; 6. slender sand core head; 7. sand core assembly; 8. ordinary ejector pin. DETAILED DESCRIPTION
[0018] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.
[0019] See also Figure 1-4 , an embodiment provided by the utility model:
[0020] A sliding fork sand core box with a built-in exhaust ejector rod device comprises a static mold core box body 1, a dynamic mold core box body 2, a sand shooting port 3, a first exhaust hollow ejector rod 4, a second exhaust hollow ejector rod 411, an exhaust plug 5, a slender sand core head 6, a sand core assembly 7, and a common ejector rod 8. The static mold core box body 1 and the dynamic mold core box body 2 are combined with each other, and after the static mold core box body 1 and the dynamic mold core box body 2 are combined, the core sand is shot into the core box from the sand shooting port 3, the gas in the core box is completely discharged from the exhaust hole, and at the same time, the core sand fills every area including the blind area. After the core sand is solidified, the slender sand core head 6 is ejected by pushing the first exhaust hollow ejector rod 4, the second exhaust hollow ejector rod 411 and the common ejector rod 8 on the baffle.
[0021] Furthermore, the first exhaust hollow push rod 4 and the second exhaust hollow push rod 411 are not easy to deform. The hollow push rods that are not easy to deform can ensure that the position and angle of the push rods remain stable during the process of ejecting the sand core, which avoids the uneven ejection force caused by the deformation of the push rods, thereby ensuring the integrity of the sand core.
[0022] Furthermore, after the exhaust plug 5 is damaged after a long period of use, it can be pushed out through the hollow area of the first exhaust hollow push rod 4. By pushing out the exhaust plug through the hollow area, the risk of further damage or injury to the core box that may be caused when it is directly pulled out can be reduced. In addition, since the maintenance and replacement process is simple, the demand for professional maintenance personnel can be reduced, further reducing production costs.
[0023] Furthermore, the exhaust plug 5 is movably installed in the first exhaust hollow push rod 4. Through the movable installation, the exhaust plug 5 can better adapt to different working conditions and sand core changes, and maintain the stable operation of the device.
[0024] Working principle: The device first combines the static mold core box body 1 and the dynamic mold core box body 2. The two core box bodies together constitute a complete core box. The core sand is shot into the combined core box by sand shooting, 3. During the sand shooting process, the gas in the core box is completely discharged through the exhaust hole, ensuring that the core sand can smoothly and evenly fill various areas of the core box, including the blind area. As time goes by, the core sand injected into the core box will solidify. After the sand core is completely solidified, the ejector rod will push out the slender sand core head 6 by pushing the baffle, thereby ejecting the entire sand core from the core box. After the exhaust plug has been used for a long time or is damaged, it can be ejected through the hollow area for easy replacement, thereby reducing maintenance time.
[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A sliding fork sand core box with a built-in exhaust ejector rod device, comprising a static mold core box body (1), a movable mold core box body (2), a sand shooting port (3), a first exhaust hollow ejector rod (4), a second exhaust hollow ejector rod (411), an exhaust plug (5), an elongated sand core head (6), a sand core assembly (7), and a common ejector rod (8), characterized in that: The static mold core box body (1) and the dynamic mold core box body (2) are combined with each other, and after the static mold core box body (1) and the dynamic mold core box body (2) are combined, the core sand is injected into the core box through the sand injection port (3), the gas in the core box is completely discharged through the exhaust hole, and at the same time, the core sand fills each area including the blind area, and after the core sand is solidified, the slender sand core head (6) is ejected by pushing the first exhaust hollow ejector rod (4), the second exhaust hollow ejector rod (411) and the common ejector rod (8) on the baffle.
2. A sliding fork sand core box with a built-in exhaust ejector rod device according to claim 1, characterized in that: The first exhaust hollow top rod (4) and the second exhaust hollow top rod (411) are not easily deformed.
3. The sliding fork sand core box built-in exhaust ejector device according to claim 1, characterized in that: After the exhaust plug (5) is damaged after a long period of use, it can be ejected through the hollow area of the first exhaust hollow ejector rod (4).
4. The sliding fork sand core box built-in exhaust ejector device according to claim 1, characterized in that: The exhaust plug (5) is movably installed in the first exhaust hollow top rod (4).