High-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device

Abstract

The application discloses a high-strength corrosion-resistant hydraulic oil cylinder aluminum alloy piston casting core-pulling device and relates to the casting technical field. In the core-pulling process, the end face of the material is not tightly limited, the position of the material and the moving direction of the core-pulling are inclined, extrusion deformation appears between the material and the core, the quality of the core-pulling is affected, the top block and the top disc are matched, the top block first contacts the material when contacting the end face of the material, then the top block is compressed by the arc sliding plate under the contact pressure to deform the elastic pad ring, the top block slides in the inner wall of the top disc, the end face of the material is contacted by the top disc, the material is limited in the core-pulling process, the auxiliary fixing mechanism limits the material in the core-pulling process, and after the end face is contacted by the top disc, the contact area is increased, the contact position pressure is prevented from being large due to the small contact area in the core-pulling process, and the material is prevented from being deformed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of casting, in particular to a high-strength corrosion-resistant aluminum alloy piston casting core pulling device for a hydraulic cylinder. BACKGROUND

[0002] The density of aluminum alloy is far less than that of cast iron and steel, the overall weight of the hydraulic cylinder can be reduced, the equipment operation is more flexible, the energy consumption is reduced, the aluminum alloy is especially suitable for occasions sensitive to weight, is easy to cast, forge and machine, can be made into a piston structure with complex shape, meets the design requirements of different hydraulic cylinders, and has relatively low processing cost, meanwhile, the aluminum alloy surface is easy to form a dense oxide film, which can effectively resist the corrosion of the external environment, improve the reliability and durability of the piston in harsh working environment, the aluminum alloy piston casting core pulling device is a key equipment for pulling out the core in the aluminum alloy piston casting process, can realize smooth core pulling, and guarantees the inner cavity size precision and surface quality of the piston casting.

[0003] In the core pulling process, the end face of the material is not tightly limited, the position of the material is inclined to the moving direction of the core pulling, extrusion deformation occurs between the material and the core, and the core pulling quality is affected. SUMMARY

[0004] To achieve the above object, the application is implemented by the following technical scheme:

[0005] A high-strength corrosion-resistant aluminum alloy piston casting core pulling device for a hydraulic cylinder, comprising:

[0006] A frame body, a side support plate is fixedly installed at the top of the frame body, and the side support plate is installed in a position symmetrical to the axis center of the frame body;

[0007] A fixing mechanism is installed at the top of the frame body, and the fixing mechanism is used for clamping the material required to be pulled out of the core;

[0008] A pulling mechanism is installed between the side support plates, and the pulling mechanism is used for connecting the core;

[0009] The opposite sides of the side support plate are provided with first air cylinders, the top of the first air cylinder is fixedly provided with a connecting plate, the first air cylinder is fixedly connected with the opposite sides of the side support plate through the connecting plate, the output end of the first air cylinder is fixedly provided with an inner sliding plate, the opposite sides of the inner sliding plate are slidably matched with the opposite sides of the side support plate, and the opposite sides of the inner sliding plate are fixedly provided with supporting plates, the supporting plates are fixedly provided with a hollow cylinder, one end of the hollow cylinder close to the fixing mechanism is fixedly provided with a top disc, the outer side of the top disc is symmetrically provided with sliding holes, and the top disc is slidably provided with top blocks at the sliding holes, through the cooperation of the top blocks and the top disc, when the end surface of the material is contacted, the top blocks are first contacted with the material, then the top blocks are compressed by the arc sliding plate under the contact pressure, the elastic gasket is deformed, the top blocks slide in the inner wall of the top disc, and the top disc contacts the end surface of the material, so that the material is limited in the core pulling process, the fixing mechanism assists in limiting the material in the core pulling process, after the top disc contacts the end surface, the contact area is increased, the contact position is avoided from being deformed due to the small contact area and the large pressure of the contact position in the core pulling process, and the upper and lower sides of the hollow cylinder are fixedly provided with fixed arc plates, the outer side of the hollow cylinder is slidably provided with an arc sliding plate, the outer side of the arc sliding plate is fixedly connected with the top block, and the arc sliding plate and the fixed arc plate are fixedly provided with an elastic gasket.

[0010] Preferably, the pulling mechanism comprises a connecting rod, one end of the connecting rod is fixedly connected with one side of the supporting plate away from the fixing mechanism, one end of the connecting rod away from the supporting plate is fixedly connected with a fixed plate, the outer side of the fixed plate is fixedly provided with a hydraulic cylinder, the output end of the hydraulic cylinder penetrates through the fixed plate and extends to the other side, the output end of the hydraulic cylinder is fixedly provided with a fixed block, the opposite sides of the connecting rod close to the fixing mechanism are fixedly provided with connecting blocks, the connecting blocks and the fixed plate are fixedly provided with guide rods, the two sides of the fixed block are fixedly provided with sliding buckles, the sliding buckles and the guide rods are matched, the core pulling direction is guided and limited in the core pulling movement, the material is avoided from being scratched due to the extrusion between the core and the material caused by the inclined core pulling direction in the core pulling process, the side of the sliding buckle away from the fixed block is an arc surface, the arc surface of the sliding buckle is slidably matched with the outer side of the guide rod, and one end of the fixed block close to the fixing mechanism is fixedly provided with a core pulling rod.

[0011] Preferably, the fixing mechanism comprises a support frame, second air cylinders are fixedly installed on both sides of the support frame, the output ends of the second air cylinders penetrate through the support frame and extend into the support frame, side baffles are fixedly installed on the inner walls of the support frame, bottom plates are fixedly installed on the bottoms of the side baffles, a supporting block is slidingly installed between the side baffles, the supporting block cooperates with the backing plate, the elastic deformation characteristics of the elastic material of the backing plate are utilized, in the clamping and fixing process, the pressure generated by clamping causes the backing plate to deform, the supporting block slides between the side baffles, the position of the material is adjusted, the material is supported and the position of the material is adjusted, the top of the supporting block is a curved surface, a backing plate is fixedly installed between the bottom of the supporting block and the top of the bottom plate, and the backing plate is made of elastic material.

[0012] Preferably, inclined plates are fixedly installed on the output ends of the second air cylinders, the opposite surfaces of the inclined plates are inclined surfaces, the widths of the inclined plates gradually increase in the process of approaching the pulling mechanism, the inclined plates cooperate with the arc clamping plates, the arc surface of the arc clamping plate is utilized to clamp the material, the center position of the material corresponds to the center position of the pulling mechanism, in the process of pulling out the core, when the material tends to move synchronously with the core, the inclined surface of the inclined plate causes the arc clamping block to tend to move inward, the clamping force is increased to limit the movement of the material, the separation of the material and the core is ensured, the opposite surfaces of the inclined plates are provided with sliding grooves, sliding blocks are slidingly installed at the sliding grooves of the inclined plates, and arc clamping plates are fixedly installed on the outer sides of the sliding blocks.

[0013] The application provides a high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device.

[0014] I. The high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device is used for limiting the piston material in the core pulling process, assisting the fixing mechanism in limiting the material in the core pulling process, and increasing the contact area after the top disc contacts the end surface, so that the contact position pressure is prevented from being too large and the material is prevented from being deformed in the core pulling process.

[0015] II. The high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device is used for guiding and limiting the core pulling direction in the core pulling movement process, so that the type core and the material are prevented from being extruded and the material is prevented from being scratched in the core pulling process.

[0016] III. The high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device, through the cooperation of the supporting block and the backing plate, utilizes the elastic deformation characteristics of the elastic material of the backing plate, in the clamping and fixing process, through the pressure generated by clamping, the backing plate deforms, the supporting block slides between the side stop plates, adjusts the position of the material, supports at the same time, and facilitates the adjustment of the position of the material.

[0017] IV. The high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device, through the cooperation of the inclined plane plate and the arc clamping plate, the arc surface of the arc clamping plate clamps the material, the center position of the material corresponds to the center position of the pulling mechanism, and in the core pulling process, when the material moves synchronously with the core, the arc clamping block moves inward, the clamping force is increased to limit the movement of the material, and the separation of the material and the core is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The figure is a structural schematic view of the high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device.

[0019] Figure 2 The figure is a partial structural schematic view of the high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device.

[0020] Figure 3 The figure is a partial structural side view of the high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device.

[0021] Figure 4 The figure is a partial structural bottom view of the high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device.

[0022] Figure 5 The figure is a partial structural top view of the high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device.

[0023] Figure 6 The figure is a structural schematic view of the pulling mechanism.

[0024] Figure 7 The figure is a structural schematic view of the fixing mechanism.

[0025] Figure 8 The figure is a partial structural schematic view of the fixing mechanism.

[0026] In the figure: 1, frame body; 2, fixing mechanism; 3, pulling mechanism; 4, side support plate; 5, connecting plate; 6, first air cylinder; 7, inner slide plate; 8, support plate; 9, hollow cylinder; 10, fixed arc plate; 11, top disc; 12, top block; 13, elastic gasket ring; 14, arc slide plate; 21, support frame; 22, supporting block; 23, side baffle; 24, arc clamping plate; 25, inclined plane plate; 26, second air cylinder; 27, slide block; 28, bottom plate; 29, gasket plate; 31, hydraulic cylinder; 32, fixed plate; 33, connecting rod; 34, guide rod; 35, connecting block; 36, core pulling rod; 37, fixed block; 38, slide buckle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] The first embodiment, as shown in the figure, the present application provides a technical solution: Figures 1 to 5

[0029] A high-strength corrosion-resistant hydraulic cylinder aluminum alloy piston casting core pulling device, comprising:

[0030] Frame body 1, the top of the frame body 1 is fixedly installed with a side support plate 4, and the side support plate 4 is installed symmetrically along the axis center position of the frame body 1;

[0031] Fixing mechanism 2, the fixing mechanism 2 is installed on the top of the frame body 1, and the fixing mechanism 2 is used for clamping the material required to be core-pulled;

[0032] Pulling mechanism 3, the pulling mechanism 3 is installed between the side support plates 4, and the pulling mechanism 3 is used for connecting the core;

[0033] ​The opposite sides of the side support plate 4 are provided with first air cylinders 6, the top of each first air cylinder 6 is fixedly provided with a connecting plate 5, the first air cylinder 6 is fixedly connected with the opposite sides of the side support plate 4 through the connecting plate 5, the output end of the first air cylinder 6 is fixedly provided with an inner slide plate 7, after the material is fixed by the fixing mechanism 2, the first air cylinder 6 drives the inner slide plate 7 to slide between the side support plates 4, drives the pulling mechanism 3 to approach the fixing mechanism 2, and drives the support plate 8 through the inner slide plate 7, so that the top plate 11 drives the top block 12 to contact the end surface of the piston material, and under the driving of the first air cylinder 6, the contact pressure between the top block 12 and the end surface of the piston material gradually increases, the non-opposite side of the inner slide plate 7 is slidably matched with the opposite side of the side support plate 4, the opposite side of the inner slide plate 7 is fixedly provided with the support plate 8, the hollow cylinder 9 is fixedly arranged between the support plates 8, the top plate 11 is fixedly arranged at one end of the hollow cylinder 9 close to the fixing mechanism 2, the outer side of the top plate 11 is symmetrically provided with slide holes, and the top block 12 is slidably arranged in the slide hole of the top plate 11, under the contact pressure, the elastic gasket ring 13 is compressed by the top block 12 and the arc slide plate 14, so that the elastic gasket ring 13 is deformed and compressed, the top block 12 slides in the inner wall of the top plate 11, so that the top plate 11 contacts the end surface of the material to increase the contact area, then the core in the material is pulled out through the pulling mechanism 3, the upper and lower sides of the hollow cylinder 9 are fixedly provided with fixed arc plates 10, and the outer side of the hollow cylinder 9 is slidably provided with the arc slide plate 14, the outer side of the arc slide plate 14 is fixedly connected with the top block 12, and the elastic gasket ring 13 is fixedly arranged between the arc slide plate 14 and the fixed arc plate 10.

[0034] In the second embodiment, on the basis of the first embodiment, referring to Figure 6 The pulling mechanism 3 includes a connecting rod 33, one end of the connecting rod 33 is fixedly connected with one side of the support plate 8 away from the fixing mechanism 2, the other end of the connecting rod 33 is fixedly connected with a fixed plate 32, the outer side of the fixed plate 32 is fixedly provided with a hydraulic cylinder 31, the fixed block 37 is driven by the hydraulic cylinder 31 to approach the material, so that the core pulling rod 36 is connected with the core in the material, the output end of the hydraulic cylinder 31 penetrates through the fixed plate 32 and extends to the other side, and the output end of the hydraulic cylinder 31 is fixedly provided with the fixed block 37.

[0035] The connecting rod 33 is fixedly installed with a connecting block 35 on the side close to the fixing mechanism 2, and a guide rod 34 is fixedly installed between the connecting block 35 and the fixing plate 32. The two sides of the fixing block 37 are fixedly installed with sliding buckles 38, and the side away from the fixing block 37 is an arc surface. After the connection is completed, the fixing block 37 is moved by the hydraulic cylinder 31, the core pulling rod 36 is driven by the fixing block 37 to pull out the core from the material, and in the moving process, the arc surface of the sliding buckle 38 slides with the surface of the guide rod 34, so that the sliding buckle 38 slides under the limitation of the guide rod 34 to limit the moving direction, and the arc surface of the sliding buckle 38 and the outer side of the guide rod 34 slide and fit, and the core pulling rod 36 is fixedly installed on the end of the fixing block 37 close to the fixing mechanism 2.

[0036] The third embodiment is based on the first and second embodiments, and as shown in Figures 7 to 8 The fixing mechanism 2 includes a support frame 21, and the two sides of the support frame 21 are fixedly installed with second air cylinders 26. The output ends of the second air cylinders 26 penetrate through the support frame 21 and extend into the support frame 21. The inner walls of the support frame 21 are fixedly installed with side baffles 23 on the two sides. When the piston material is placed, it is placed on the arc surface at the top of the supporting block 22. The supporting block 22 supports the piston material by supporting the supporting block 22 through the backing plate 29. Then the second air cylinder 26 drives the inclined plate 25 to move close to each other. The two sides of the piston material are contacted by the arc clamping plate 24. The arc clamping plate 24 clamps the material by the force of the second air cylinder 26. The bottoms of the side baffles 23 are fixedly installed with the bottom plate 28. The supporting block 22 is slidingly installed between the side baffles 23. The top of the supporting block 22 is an arc surface. Under the clamping pressure, the arc surface on the opposite side of the arc clamping plate 24 is contacted with the material. In the clamping process, the center position of the material corresponds to the center position of the pulling mechanism 3 by the contact with the material. Under the pressure in the position adjustment process, the position of the supporting block 22 is changed by the elastic deformation of the backing plate 29. The bottom of the supporting block 22 and the top of the bottom plate 28 are fixedly installed with the backing plate 29, and the backing plate 29 is an elastic material.

[0037] The output ends of the second air cylinders 26 are fixedly installed with inclined plates 25, and the opposite sides of the inclined plates 25 are inclined surfaces. The width of the inclined plate 25 gradually increases close to the pulling mechanism 3. In the core pulling process, when the material has a tendency to move with the core, the arc clamping plate 24 has a tendency to move synchronously, the sliding block 27 has a tendency to slide, and the arc clamping plate 24 has a tendency to move close to each other, so that the clamping force is increased, the material is limited to move with the core, and the opposite sides of the inclined plate 25 are provided with sliding grooves. The sliding grooves are slidingly installed with sliding blocks 27, and the outer sides of the sliding blocks 27 are fixedly installed with arc clamping plates 24. The opposite sides of the arc clamping plates 24 are arc surfaces.

[0038] When in use, the piston material after opening the mold is introduced into the core pulling device through the conveying equipment, and the material is placed in the fixing mechanism 2, and the material is clamped and fixed through the fixing mechanism 2, then the first cylinder 6 drives the pulling mechanism 3 to approach the fixing mechanism 2, then the worker connects the pulling mechanism 3 with the core, and finally the material is separated from the core through the pulling mechanism 3.

[0039] After the material is fixed by the fixing mechanism 2, the first cylinder 6 drives the inner slide plate 7 to slide between the side support plates 4, drives the pulling mechanism 3 to approach the fixing mechanism 2, and drives the support plate 8 through the inner slide plate 7, so that the top plate 11 drives the top block 12 to contact the end face of the piston material, and under the driving of the first cylinder 6, the contact pressure between the top block 12 and the end face of the piston material gradually increases, and under the contact pressure, the elastic gasket ring 13 is compressed by the top block 12 and the arc slide plate 14, so that the elastic gasket ring 13 is deformed and compressed, and the top block 12 slides on the inner wall of the top plate 11, so that the top plate 11 contacts the end face of the material to increase the contact area, and then the core in the material is pulled out through the pulling mechanism 3.

[0040] In the fixing mechanism 2, when the piston material is placed, it is placed at the arc surface on the top of the supporting block 22, the supporting block 22 supports the piston material through the gasket 29, then the second cylinder 26 drives the inclined plate 25 to approach each other, the arc clamp plate 24 contacts the two sides of the piston material through the inclined plate 25, and the arc clamp plate 24 clamps the material through the force of the second cylinder 26, and under the clamping pressure, the arc surface on the opposite surface of the arc clamp plate 24 is contacted, and in the process of clamping, the center position of the material corresponds to the center position of the pulling mechanism 3 through the contact with the material, and under the pressure in the position adjustment process, the position of the supporting block 22 is changed through the elastic deformation of the gasket 29, and in the process of core pulling, the inclined surface of the inclined plate 25 is contacted, and when the material tends to move together with the core in the process of core pulling, the arc clamp plate 24 tends to move synchronously, so that the sliding block 27 tends to slide, and the arc clamp plate 24 tends to slide while approaching each other, so as to increase the clamping force and limit the movement of the material together with the core.

[0041] In the pulling mechanism 3, the fixed block 37 is driven by the hydraulic cylinder 31 to approach the material, so that the core pulling rod 36 is connected with the core in the material, after the connection is completed, the fixed block 37 is driven by the hydraulic cylinder 31 to move, so that the fixed block 37 drives the core pulling rod 36 to pull out the core from the material, and in the process of moving, the arc surface of the sliding buckle 38 slides with the surface of the guide rod 34, so that the sliding buckle 38 slides under the limitation of the guide rod 34 to limit the moving direction.

[0042] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0043] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. A high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device, characterized in that, include: A frame (1) is provided, and a side support plate (4) is fixedly installed on the top of the frame (1). The side support plate (4) is symmetrically installed along the center position of the axis of the frame (1). A fixing mechanism (2) is installed on the top of the frame (1) and is used to clamp the material to be pulled out; A pull-out mechanism (3) is installed between the side support plates (4) and is used to connect the core. Each of the opposite sides of the side support plate (4) is equipped with a first cylinder (6). A connecting plate (5) is fixedly installed on the top of the first cylinder (6). The first cylinder (6) is fixedly connected to the opposite side of the side support plate (4) through the connecting plate (5). An inner sliding plate (7) is fixedly installed at the output end of the first cylinder (6). The non-opposing side of the inner sliding plate (7) is slidably adapted to the opposite side of the side support plate (4). Support plates (8) are fixedly installed on the opposite sides of the inner sliding plate (7). A hollow cylinder (9) is fixedly installed between the support plates (8). A top plate (11) is fixedly installed at one end of the core cylinder (9) near the fixing mechanism (2). The top plate (11) has symmetrical sliding holes on its outer side, and a top block (12) is slidably installed at each sliding hole of the top plate (11). Fixed arc plates (10) are fixedly installed on both the upper and lower sides of the hollow cylinder (9), and an arc plate (14) is slidably installed on the outer side of the hollow cylinder (9). The outer side of the arc plate (14) is fixedly connected to the top block (12), and an elastic washer (13) is fixedly installed between the arc plate (14) and the fixed arc plate (10).

2. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 1, characterized in that: The pull-out mechanism (3) includes a connecting rod (33), one end of which is fixedly connected to the side of the support plate (8) away from the fixing mechanism (2), and a fixing plate (32) is fixedly connected to the end of the connecting rod (33) away from the support plate (8).

3. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 2, characterized in that: A hydraulic cylinder (31) is fixedly installed on the outside of the fixed plate (32). The output end of the hydraulic cylinder (31) passes through the fixed plate (32) and extends to the other side. A fixing block (37) is fixedly installed on the output end of the hydraulic cylinder (31).

4. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 3, characterized in that: Each of the connecting rods (33) has a connecting block (35) fixedly installed on the side of the opposite face of the fixing mechanism (2), and a guide rod (34) is fixedly installed between the connecting block (35) and the fixing plate (32).

5. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 4, characterized in that: Both sides of the fixing block (37) are fixedly installed with sliding buckles (38). The side of the sliding buckle (38) away from the fixing block (37) is an arc-shaped surface, and the arc-shaped surface of the sliding buckle (38) is slidably adapted to the outer side of the guide rod (34). A core-pulling rod (36) is fixedly installed at the end of the fixing block (37) near the fixing mechanism (2).

6. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 5, characterized in that: The fixing mechanism (2) includes a support frame (21), on both sides of the support frame (21) a second cylinder (26) is fixedly installed, and the output end of the second cylinder (26) passes through the support frame (21) and extends into its interior.

7. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 6, characterized in that: Side baffles (23) are fixedly installed on both sides of the inner wall of the support frame (21), and bottom plates (28) are fixedly installed on the bottom of the side baffles (23). Support blocks (22) are slidably installed between the side baffles (23).

8. The high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 7, characterized in that: The top of the support block (22) is curved, and a pad (29) is fixedly installed between the bottom of the support block (22) and the top of the base plate (28). The pad (29) is made of elastic material.

9. A high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 8, characterized in that: The output end of the second cylinder (26) is fixedly equipped with a slanted plate (25). The opposite side of the slanted plate (25) is a slanted surface, and the width of the slanted plate (25) gradually increases as it approaches the pull-out mechanism (3).

10. A high-strength, corrosion-resistant hydraulic cylinder aluminum alloy piston casting core-pulling device according to claim 9, characterized in that: The opposite surfaces of the inclined panel (25) are provided with sliding grooves, and a slider (27) is slidably installed at the sliding groove of the inclined panel (25). An arc clamp (24) is fixedly installed on the outside of the slider (27), and the opposite surface of the arc clamp (24) is an arc surface.

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