A cold-box sand core box with a deformed water and oil channel

Abstract

The utility model discloses a kind of deformed waterway oilway sand core cold core box, jacking mechanism includes two first baffle fixedly connected in the bottom of cold core box body both sides, first connecting rod is rotatably connected between every two first baffle, the both ends of the outer wall of two first connecting rod are equipped with thread groove, the outer wall of every thread groove is threadedly connected with first threaded block, the top of every first threaded block is fixedly connected with first fixed seat, the side of every first fixed seat is rotatably connected with first connecting rod, the utility model, drive first fixed seat to drive first connecting rod, eject first top plate located in the top of first fixed seat, further can be to the machining piece inside the body of cold core box and lift, compared with directly using pneumatic mode, this linkage mode is more stable in the process of use, and the force of first top plate ejecting is same, and it will not cause the deformation of internal sand core due to uneven stress, and further improve the working efficiency in production process.

Description

Technical Field

[0001] This utility model relates to the technical field of sand core cold core boxes, specifically a deformable waterway and oilway sand core cold core box. Background Technology

[0002] In the automotive, construction machinery, and marine power industries, core components such as internal combustion engines (e.g., engine blocks and cylinder heads) and hydraulic valve blocks are formed through casting processes. The internal cooling and lubrication channels are crucial structures for ensuring the proper functioning of these components. Cooling channels need to achieve efficient coolant circulation to control engine temperature, while lubricating channels need to ensure precise lubrication to reduce wear. The formation of these complex internal cavities relies on sand cores (precast sand molds used in casting to form the internal cavities or complex structures of castings). Among these, sand cores specifically designed for cooling and lubrication channels (hereinafter referred to as "cooling and lubrication channel sand cores") directly determine the dimensional accuracy, surface quality, and flow performance of the internal cavities.

[0003] In the cold box molding process of water and oil channel sand cores, precise demolding of the sand core is a crucial step in ensuring product accuracy. Existing technologies generally employ multiple independent ejector rods coupled with hydraulic or pneumatic drive systems to complete the sand core demolding operation through synchronized ejection actions. However, this traditional approach has significant drawbacks: firstly, the system construction cost is high, with substantial investment in the procurement and integration of hydraulic and pneumatic components; secondly, the subsequent maintenance complexity is high, requiring regular inspection and adjustment of the drive components, which may lead to asynchronous ejector rod responses. Ultimately, uneven ejection force distribution causes sand core deformation, directly affecting the molding quality of the water and oil channels and the subsequent assembly accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a deformable waterway / oilway sand core cold core box to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes a deformable waterway / oilway sand core cold core box, including a cold core box body, wherein a lifting mechanism is provided at the bottom of the cold core box body;

[0006] The lifting mechanism includes two first baffles fixedly connected to both sides of the bottom of the cold core box body. A first connecting rod is rotatably connected between each pair of first baffles. Both ends of the outer wall of the two first connecting rods are provided with threaded grooves. A first threaded block is threadedly connected to the outer wall of each threaded groove. A first fixing seat is fixedly connected to the top of each first threaded block. A first connecting rod is rotatably connected to one side of each first fixing seat, and a first fixing seat is rotatably connected to the other end of each first connecting rod. The top of the two first fixing seats at both ends is fixedly connected to a first top plate.

[0007] In one example, two first bevel gears are fixedly connected to the middle of the outer walls of the two first connecting rods. A second bevel gear is meshed with one side of each first bevel gear. A first lead screw is fixedly connected to the center of one side of each second bevel gear. A second baffle is fixedly connected to the other end of each first lead screw. The top of the second baffle is fixedly connected to the bottom of the cold core box body. A second threaded block is threaded to the outer wall of each first lead screw. A second fixing seat is fixedly connected to the top of each second threaded block.

[0008] In one example, one end of each of the second fixed seats is rotatably connected to a second link, and the other end of each of the second links is rotatably connected to a second fixed seat, wherein two top plates are fixedly connected to the tops of the two opposite second fixed seats.

[0009] In one example, the top of the cold core box body has multiple strip-shaped holes.

[0010] In one example, one side of each of the two first baffles is rotatably connected to a timing pulley, and the outer wall of the two timing pulleys is fitted with a timing belt.

[0011] In one example, a servo motor is fixedly connected to one side of one of the first baffles, and the drive shaft of one of the synchronous pulleys is fixedly connected to the output end of the servo motor.

[0012] In one example, a smart control panel is provided on one side of the cold core box body, and a servo motor switch is provided on the surface of the smart control panel. The servo motor is electrically connected to an external power supply through the servo motor switch.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. A first connecting rod is provided between two first baffles on both sides of the bottom of the cold core box body. A threaded groove is formed on the outer wall of each connecting rod, and a first threaded block is threadedly connected to the outer wall of the threaded groove. A first fixed seat is provided on the top of the first threaded block, and a first connecting rod is rotatably connected to one side of the first fixed seat. One end of each first connecting rod is also rotatably connected to the first fixed seat. During use, when the internal processing of the cold core box body is completed, the rotation of the threaded groove, due to the opposite orientation of the threads, causes the first threaded blocks on both sides to move inward. This, in turn, drives the first fixed seat to drive the first connecting rod, pushing out the first top plate located on top of the first fixed seat. This, in turn, lifts the processed parts inside the cold core box body. Compared to directly using pneumatic methods, this linkage method is more stable during use, and the force exerted by the first top plate is uniform, preventing deformation of the internal sand core due to uneven force, thereby improving work efficiency during production.

[0015] 2. Two first bevel gears are installed on the outer walls of the two first connecting rods. A second bevel gear is meshed with one side of each first bevel gear, and a first lead screw is fixedly connected to one side of each second bevel gear. A second threaded block is threaded to the outer wall of the first lead screw. A second fixed seat is fixedly connected to the top of each second threaded block. A second connecting rod is rotatably connected to one side of the second fixed seat, and a second fixed seat is also rotatably connected to the other end of the second connecting rod. A second top plate is fixedly connected to the top of the second fixed seat. This allows the second top plates located at the other two ends to lift the internal parts simultaneously during use, enabling more even lifting of the internal workpieces and facilitating the removal of internal components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the cold core box of this utility model;

[0018] Figure 3 This is a schematic diagram of the lifting mechanism structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the strip hole structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the other side of the cold core box of this utility model.

[0021] In the diagram: 1. Cold core box body; 2. Lifting mechanism; 201. First baffle; 202. Threaded groove; 203. First threaded block; 204. First fixed seat; 205. First connecting rod; 206. First top plate; 207. First bevel gear; 208. Second bevel gear; 209. First lead screw; 210. Second threaded block; 211. Second fixed seat; 212. Second connecting rod; 213. Second top plate; 214. Strip hole; 215. Synchronous pulley; 216. Synchronous belt; 217. Servo motor; 218. Second baffle; 219. First connecting rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5 This utility model provides a technical solution: a deformable waterway oil channel sand core cold core box, including a cold core box body 1, and a lifting mechanism 2 is provided at the bottom of the cold core box body 1;

[0024] The lifting mechanism 2 includes two first baffles 201 fixedly connected to both sides of the bottom of the cold core box body 1. A first connecting rod 219 is rotatably connected between each pair of first baffles 201. Both ends of the outer wall of the two first connecting rods 219 are provided with threaded grooves 202. A first threaded block 203 is threadedly connected to the outer wall of each threaded groove 202. A first fixing seat 204 is fixedly connected to the top of each first threaded block 203. A first connecting rod 205 is rotatably connected to one side of each first fixing seat 204, and a first fixing seat 204 is rotatably connected to the other end of each first connecting rod 205. A first top plate 206 is fixedly connected to the top of the two first fixing seats 204 at both ends.

[0025] In use, first baffles 201 are set on both sides of the bottom of the cold core box body 1. A first connecting rod 219 is provided between every two first baffles 201, and a threaded groove 202 is opened on the outer wall of the two first connecting rods 219. A first threaded block 203 is threadedly connected to the outer wall of the threaded groove 202. A first fixing seat 204 is provided on the top of the first threaded block 203. A first connecting rod 205 is rotatably connected to one side of the first fixing seat 204. One end of each first connecting rod 205 is also rotatably connected to the first fixing seat 204, so that during use, when the internal processing of the cold core box body 1 is completed, the threaded connection is used to connect the first connecting rod 205 to the first fixing seat 204. As the groove 202 rotates, the opposite orientation of its threads causes the first threaded blocks 203 on both sides to move inward. This, in turn, drives the first fixed seat 204 to drive the first connecting rod 205, pushing out the first top plate 206 located on top of the first fixed seat 204. This, in turn, lifts the processed parts inside the cold core box body 1. Compared to using pneumatic methods directly, this linkage method is more stable during use, and the force exerted by the first top plate 206 is uniform, preventing deformation of the internal sand core due to uneven force, thereby improving work efficiency in the production process.

[0026] Furthermore, two first bevel gears 207 are fixedly connected to the middle of the outer wall of each of the two first connecting rods 219. A second bevel gear 208 is meshed with one side of each first bevel gear 207. A first lead screw 209 is fixedly connected to the center of one side of each second bevel gear 208. A second baffle 218 is fixedly connected to the other end of each first lead screw 209. The top of the second baffle 218 is fixedly connected to the bottom of the cold core box body 1. A second threaded block 210 is threadedly connected to the outer wall of each first lead screw 209. A second fixing seat 211 is fixedly connected to the top of each second threaded block 210.

[0027] Each second fixed seat 211 has a second connecting rod 212 rotatably connected to one end, and the second connecting rod 212 has a second fixed seat 211 rotatably connected to the other end, wherein the tops of the two opposite second fixed seats 211 are fixedly connected to a second top plate 213.

[0028] In use, two first bevel gears 207 are set on the outer walls of the two first connecting rods 219. A second bevel gear 208 is meshed with one side of each first bevel gear 207, and a first lead screw 209 is fixedly connected to one side of each second bevel gear 208. A second threaded block 210 is threadedly connected to the outer wall of the first lead screw 209. A second fixed seat 211 is fixedly connected to the top of each second threaded block 210. A second connecting rod 212 is rotatably connected to one side of the second fixed seat 211, and the other end of the second connecting rod 212 is also rotatably connected to the second fixed seat 211. A second top plate 213 is fixedly connected to the top of the second fixed seat 211. In use, when the first top plate 206 lifts the interior, the second top plates 213 located at the other two ends can also lift at the same time, so that the internal processed products can be lifted more evenly, and the internal components can be removed more easily.

[0029] Furthermore, the top of the cold core box body 1 is provided with multiple strip-shaped holes 214.

[0030] The multiple strip-shaped holes 214 located on the top of the cold core box body 1 are used to place the first top plate 206 and the second top plate 213, and to limit the position of the first top plate 206 and the second top plate 213.

[0031] Furthermore, one side of each of the two first baffles 201 is rotatably connected to a synchronous pulley 215, and the outer wall of the two synchronous pulleys 215 is fitted with a synchronous belt 216.

[0032] One of the first baffles 201 is fixedly connected to one side of a servo motor 217, and the drive shaft of one of the synchronous pulleys 215 is fixedly connected to the output end of the servo motor 217.

[0033] The synchronous pulleys 215, synchronous belts 216, and servo motors 217 are located on both sides of the cold core box body 1. The synchronous pulleys 215 and synchronous belts 216 are used to drive the two first connecting rods 219 to rotate simultaneously, and the servo motors 217 are the main driving source of the entire lifting mechanism 2.

[0034] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so they are described more simply; relevant parts can be referred to the descriptions of the method embodiments.

[0035] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A deformable waterway oil channel sand core cold core box, comprising a cold core box body (1), wherein a lifting mechanism (2) is provided at the bottom of the cold core box body (1). Its features are: The lifting mechanism (2) includes two first baffles (201) fixedly connected to the bottom sides of the cold core box body (1). A first connecting rod (219) is rotatably connected between each pair of first baffles (201). Both ends of the outer wall of the two first connecting rods (219) are provided with threaded grooves (202). A first threaded block (203) is threadedly connected to the outer wall of each threaded groove (202). A first fixing seat (204) is fixedly connected to the top of each first threaded block (203). A first connecting rod (205) is rotatably connected to one side of each first fixing seat (204), and a first fixing seat (204) is rotatably connected to the other end of each first connecting rod (205). A first top plate (206) is fixedly connected to the top of the two first fixing seats (204) at both ends.

2. The deformable waterway / oilway sand core cold box according to claim 1, characterized in that: Two first bevel gears (207) are fixedly connected to the middle of the outer wall of each of the two first connecting rods (219). A second bevel gear (208) is meshed with one side of each first bevel gear (207). A first lead screw (209) is fixedly connected to the center of one side of each second bevel gear (208). A second baffle (218) is fixedly connected to the other end of each first lead screw (209). The top of the second baffle (218) is fixedly connected to the bottom of the cold core box body (1). A second threaded block (210) is threadedly connected to the outer wall of each first lead screw (209). A second fixing seat (211) is fixedly connected to the top of each second threaded block (210).

3. A deformable waterway / oilway sand core cold core box according to claim 2, characterized in that: Each of the second fixed seats (211) is rotatably connected to a second connecting rod (212) at one end, and the other end of the second connecting rod (212) is rotatably connected to a second fixed seat (211), wherein a second top plate (213) is fixedly connected to the top of each of the two opposite second fixed seats (211).

4. The deformable waterway / oilway sand core cold box according to claim 1, characterized in that: The top of the cold core box body (1) is provided with multiple strip holes (214).

5. A deformable waterway / oilway sand core cold box according to claim 1, characterized in that: One side of each of the two first baffles (201) is rotatably connected to a synchronous wheel (215), and the outer wall of the two synchronous wheels (215) is fitted with a synchronous belt (216).

6. A deformable waterway / oilway sand core cold box according to claim 1, characterized in that: One of the first baffles (201) is fixedly connected to one side of a servo motor (217), and the drive shaft of one of the synchronous pulleys (215) is fixedly connected to the output end of the servo motor (217).

7. A deformable waterway / oilway sand core cold box according to claim 6, characterized in that: The cold core box body (1) is provided with an intelligent control panel on one side. The surface of the intelligent control panel is provided with a servo motor switch. The servo motor (217) is electrically connected to an external power supply through the servo motor switch.

Images