Two-piece synchronous automatic dip-coating clamp for cylinder head core

Abstract

The utility model discloses a kind of two-piece synchronous automatic dip-coating clamps of cylinder head core group, including main beam frame, the lower side two ends of main beam frame are respectively set fixed frame and movable frame, fixed frame is herringbone, the upper side end of fixed frame is fixedly connected main beam frame, the inside of lower side two end portions is set right rotating shaft, movable frame is symmetrically arranged two herringbones, the upper end of movable frame is suspended and slidably connected on the slide rail set on the lower side of main beam frame, the inside of lower side end portion is set left rotating shaft, two left rotating shafts are respectively coincident with the axis of two right rotating shafts on fixed frame, detachably connected for the clamping plate of joint cylinder head core group on left and right rotating shafts, left rotating shaft is driven rotation by swing cylinder set in movable frame, two right rotating shafts are driven synchronous rotation with left rotating shaft by driving mechanism. This clamp can be adapted to multiple sizes of workpiece model, configure stroke switching function, can reduce clamp material taking time, two cover plates can be dip-coated simultaneously, reduce process, reduce beat.

Description

Technical Field

[0001] This utility model belongs to the technical field of automatic dip coating of cylinder head core assembly, and specifically relates to a synchronous automatic dip coating fixture for two cylinder head core assemblies. Background Technology

[0002] The cylinder head core assembly is a crucial component in the engine cylinder head manufacturing process, and its quality directly affects the cylinder head's performance and lifespan. To improve the strength and high-temperature resistance of the sand core, a uniform and dense coating must be formed on its surface; therefore, the dip-coating process is a key step in sand core preparation.

[0003] Most existing cylinder head core assembly dip coating equipment uses a method of clamping and dipping individual sand cores one by one. Although the structure is relatively simple, the production efficiency is low and it is difficult to meet the high-efficiency and automated production requirements of the modern foundry industry. In addition, the existing fixture structures generally lack automatic adjustment and multi-specification compatibility, resulting in complex changeover operations, long cycle times, and large errors, which can easily affect the consistency of the coating and the quality of the finished product. Especially when dipping and coating the upper and lower sand core cover plates separately, the traditional method often requires repeated clamping and dipping operations, resulting in low equipment utilization, high energy consumption, and poor efficiency, becoming a major bottleneck restricting the increase of production capacity in automated core-making lines. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a synchronous automatic dip-coating fixture for two cylinder head core assemblies.

[0005] The technical solution adopted by this utility model is to provide a synchronous automatic dipping fixture for two cylinder head core assemblies, including a main beam frame. A connecting plate for connecting a dipping robot is set at the upper center of the main beam frame. Fixed frames and movable frames are respectively set at both ends of the lower side of the main beam frame. The fixed frames are in a herringbone shape, with the upper end of the fixed frame fixedly connected to the main beam frame. Right rotation shafts are set on the inner side of both lower ends. Two movable frames are symmetrically arranged in a herringbone shape. The upper end of the movable frame is suspended and slidably connected to a slide rail set on the lower side of the main beam frame. Left rotation shafts are set on the inner side of the lower end. The rotating shafts are respectively aligned with the axes of the two right rotating shafts on the fixed frame. Clamping plates for snapping the cylinder head core assembly can be detachably connected to both the left and right rotating shafts. The left rotating shaft is driven to rotate by a swing cylinder set on the movable frame, and the rotation angle is limited by an angle limiting mechanism. The two right rotating shafts are driven to rotate synchronously with the left rotating shaft by a drive mechanism. A connecting frame is set at the upper end of the movable frame, and a strip groove parallel to the slide rail is set on the lower side of the main beam frame. The connecting frame extends from the strip groove into the main beam frame and connects to the telescopic rod of the first telescopic cylinder built into the main beam frame.

[0006] Furthermore, the drive mechanism includes a motor located inside the upper end of the fixed frame, and the output shaft of the motor is connected to two right-hand rotating shafts inside the fixed frame via belts.

[0007] Furthermore, the angle limiting mechanism includes a fixed plate disposed on the rear side of the swing cylinder, the drive shaft of the swing cylinder extends to the rear side of the fixed plate and is fixedly connected to the first limiting rod, the fixed plate is provided with a horizontal stop and a vertical stop at a distance away from the drive shaft, and the horizontal stop and the vertical stop are provided with screwed limiting bolts to abut and limit the swing angle of the first limiting rod.

[0008] Furthermore, a proximity switch is installed on the lateral stop.

[0009] Furthermore, it includes a travel limiting mechanism located in the middle section of the slide rail and set on the front and rear sides of the main beam frame. The mechanism includes a second limiting rod hinged to the main beam frame. The rod body of the second limiting rod is hinged to the telescopic rod of the second telescopic cylinder fixed on the main beam frame. The upper end of the movable frame extends to the outer side of the front and rear sides of the main beam frame. A first limiting block is fixedly set on this extension section. The first limiting block is located on the left side of the second limiting rod. The second limiting rod can be rotated to abut its distal end against the first limiting block.

[0010] Furthermore, rectangular mounting plates are fixedly installed at the ends of the right and left rotating shafts. The clamping plate is a rectangular plate and is fixed to the mounting plate by bolts. Positioning blocks are fixedly installed on the upper and lower sides of the clamping plate by bolts, and clamping blocks are fixedly installed on the inner side of the clamping plate front and back by bolts.

[0011] Furthermore, it includes a leveling mechanism for leveling the mounting plate on the fixing frame. The leveling mechanism includes a second limiting block fixed to the inner side of the fixing frame by bolts. The second limiting block is located outside the right rotation shaft, and its inner side abuts against the side of the mounting plate. A fixing block is provided outside the second limiting block, and a set screw is screwed onto the fixing block to abut against the outer side of the second limiting block.

[0012] This utility model provides a synchronous automatic dip-coating fixture for two cylinder head core assemblies, which solves the technical problems of single-piece operation, low production efficiency, and complex changeover operations in the prior art, and has the following beneficial effects: 1. By using a single fixture to simultaneously hold two cover plate sand cores and achieve synchronized automatic dip coating, the dip coating cycle time is effectively shortened, significantly improving production line rhythm and equipment utilization, and increasing production efficiency. The fixture and robot work together to automatically complete the sand core gripping and releasing process, reducing manual operation and improving safety and automation levels.

[0013] 2. The fixture adopts a herringbone fixed frame and movable frame structure, which is reliable and stable in operation. Combined with the left and right rotating shaft linkage device, the fixture movement is more stable and the clamping is more secure, avoiding displacement and detachment of the workpiece during the transfer and dipping process.

[0014] 3. The fixture is equipped with adjustable clamping plates, positioning blocks and stroke limit mechanisms, which can be adapted to different models of sand core cover plates, and has good versatility and compatibility to meet the needs of multi-variety production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front view of the present invention; Figure 3 This is a bottom view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is a side view of the present invention; Figure 6 This is a structural schematic diagram of the angle limiting mechanism of this utility model; Figure 7 This is a schematic diagram of the stroke limiting mechanism of this utility model; Figure 8 This is a schematic diagram illustrating the use of this utility model.

[0016] In the diagram: 1. Main beam frame; 11. Connecting plate; 12. Slide rail; 13. First telescopic cylinder; 2. Fixed frame; 21. Right rotation shaft; 3. Movable frame; 31. Left rotation shaft; 32. Swing cylinder; 33. Connecting frame; 4. Clamping plate; 41. Positioning block; 42. Clamping block; 5. Angle limiting mechanism; 51. Fixed plate; 52. First limiting rod; 53. Horizontal stop block; 54. Vertical stop block; 55. Limiting bolt; 56. Proximity switch; 6. Drive mechanism; 61. Motor; 7. Stroke limiting mechanism; 71. Second limiting rod; 72. Second telescopic cylinder; 73. First limiting block; 8. Mounting plate; 9. Leveling mechanism; 91. Second limiting block; 92. Fixed block; 93. Set screw; 10. Cylinder head core assembly. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed description of a two-piece synchronous automatic dip-coating fixture for a cylinder head core assembly.

[0018] like Figures 1-5As shown, a synchronous automatic dipping fixture for two cylinder head core assemblies includes a main beam frame 1. A connecting plate 11 for connecting a dipping robot is disposed at the upper center of the main beam frame 1. Fixed frames 2 and movable frames 3 are respectively disposed at the lower ends of the main beam frame 1. The fixed frames 2 are in a herringbone shape, and the upper end of the fixed frames 2 is fixedly connected to the main beam frame 1. A right rotation shaft 21 is disposed on the inner side of the lower ends. Two movable frames 3 are symmetrically arranged in a herringbone shape. The upper end of the movable frames 3 is suspended and slidably connected to a slide rail 12 disposed on the lower side of the main beam frame 1. A left rotation shaft 31 is disposed on the inner side of the lower end. Two left rotating shafts 31 are respectively aligned with the axes of two right rotating shafts 21 on the fixed frame 2. Clamping plates 4 for engaging the cylinder head core assembly 10 are detachably connected to both left and right rotating shafts. The left rotating shaft 31 is driven to rotate by a swing cylinder 32 mounted on the movable frame 3, and the rotation angle is limited by an angle limiting mechanism 5. The two right rotating shafts 21 are driven to rotate synchronously with the left rotating shaft 31 by a drive mechanism 6. The drive mechanism 6 includes a motor 61 mounted on the inner side of the upper end of the fixed frame. The output shaft of the motor 61 is connected to the two right rotating shafts 21 inside the fixed frame 2 via a belt. A connecting frame 33 is provided at the upper end of the movable frame 3, and a strip groove parallel to the slide rail 12 is provided on the lower side of the main beam frame 1. The connecting frame 33 extends from the strip groove into the main beam frame 1 and connects to the telescopic rod of the first telescopic cylinder 13 built into the main beam frame 1.

[0019] like Figure 6 As shown, the angle limiting mechanism 5 includes a fixed plate 51 disposed on the rear side of the swing cylinder 32. The drive shaft of the swing cylinder 32 extends to the rear side of the fixed plate 51 and is fixedly connected to the first limiting rod 52. The fixed plate 51 is provided with a horizontal stop 53 and a vertical stop 54 away from the drive shaft. The horizontal stop 53 and the vertical stop 54 are provided with screwed limiting bolts 55 to abut and limit the swing angle of the first limiting rod 52. A proximity switch 56 is also provided on the horizontal stop 53.

[0020] like Figure 7 As shown, a travel limiting mechanism 7 is provided at the middle section of the slide rail 12 on the front and rear sides of the main beam frame 1. The travel limiting mechanism 7 includes a second limiting rod 71 that is hinged to the main beam frame 1. The rod body of the second limiting rod 71 is hinged to the telescopic rod of the second telescopic cylinder 72 that is fixed on the main beam frame 1. The upper end of the movable frame 3 extends to the outer side of the front and rear sides of the main beam frame 1. A first limiting block 73 is fixedly provided on this extension section. The first limiting block 73 is located to the left of the second limiting rod 71. The second limiting rod 71 can be rotated to abut its distal end against the first limiting block 73.

[0021] like Figures 2-4As shown, rectangular mounting plates 8 are fixedly installed at the ends of the right rotating shaft 21 and the left rotating shaft 31. The clamping plate 4 is a rectangular plate and is fixed to the mounting plate 8 by bolts. Positioning blocks 41 are fixedly installed on the upper and lower sides of the clamping plate 4 by bolts. Clamping blocks 42 are fixedly installed on the inner side of the clamping plate 4 by bolts.

[0022] A leveling mechanism 9 is installed on the fixed frame 2 for leveling the mounting plate 8. The leveling mechanism 9 includes a second limiting block 91 that is fixed to the inner side of the fixed frame 2 by bolts. The second limiting block 91 is located outside the right rotation shaft 21, and its inner side abuts against the side of the mounting plate 8. A fixing block 92 is provided outside the second limiting block 91, and a set screw 93 is screwed onto the fixing block 92 to abut against the outer side of the second limiting block 91.

[0023] like Figure 8 As shown, this dip coating fixture is installed on a dip coating robot. In addition, a 3D laser scanning system is configured to complete the clamping of the dip coating fixture and the automatic correction of dimensional errors. A leveling mechanism 9 and an angle limiting mechanism 5 are configured. Together with the 3D laser scanning system, the fixture movement can be precisely controlled and the workpiece clamping error can be corrected in real time, thereby improving the consistency of dip coating and product quality.

[0024] This robotic dip-coating fixture assembly works in conjunction with a dip-coating robot. When applied to a dip-coating station, it has the capability to grip two sand cores. After gripping, it can precisely transfer the sand cores to the dip-coating tank for dip-coating, greatly improving dip-coating efficiency. Simultaneously, it is adaptable to various workpiece sizes and features a stroke switching function, reducing fixture handling time. It can also dip-coat two cover plates simultaneously, streamlining processes and reducing cycle time.

[0025] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A synchronous automatic dip-coating fixture for two cylinder head core assemblies, characterized in that, The system includes a main beam frame (1), with a connecting plate (11) for connecting the coating robot at the center of the upper side of the main beam frame (1). Fixed frames (2) and movable frames (3) are respectively installed at the two ends of the lower side of the main beam frame (1). The fixed frames (2) are in a herringbone shape, with the upper end of the fixed frames (2) fixedly connected to the main beam frame (1). Right rotation shafts (21) are installed on the inner side of the lower ends. Two movable frames (3) are arranged symmetrically in a herringbone shape. The upper end of the movable frames (3) is suspended and slidably connected to the slide rail (12) installed on the lower side of the main beam frame (1). Left rotation shafts (31) are installed on the inner side of the lower end. The two left rotation shafts (31) are respectively connected to the two right rotation shafts (21) on the fixed frames (2). The axes coincide, and the clamps (4) for snapping the cylinder head core assembly (10) can be detachably connected to both left and right rotating shafts. The left rotating shaft (31) is driven to rotate by the swing cylinder (32) set in the movable frame (3), and the rotation angle is limited by the angle limiting mechanism (5). The two right rotating shafts (21) are driven to rotate synchronously with the left rotating shaft (31) by the drive mechanism (6). The upper end of the movable frame (3) is provided with a connecting frame (33), and the lower side of the main beam frame (1) is provided with a strip groove parallel to the slide rail (12). The connecting frame (33) extends from the strip groove into the main beam frame (1) and connects to the telescopic rod of the first telescopic cylinder (13) built into the main beam frame (1).

2. The cylinder head core assembly two-piece synchronous automatic dip-coating fixture according to claim 1, characterized in that, The drive mechanism (6) includes a motor (61) located on the inner side of the upper end of the fixed frame (2). The output shaft of the motor (61) is connected to two right-hand rotating shafts (21) inside the fixed frame (2) via belts.

3. The cylinder head core assembly two-piece synchronous automatic dip-coating fixture according to claim 1, characterized in that, The angle limiting mechanism (5) includes a fixed plate (51) disposed on the rear side of the swing cylinder (32). The drive shaft of the swing cylinder (32) extends to the rear side of the fixed plate (51) and is fixedly connected to the first limiting rod (52). The fixed plate (51) is provided with a horizontal stop (53) and a vertical stop (54) away from the drive shaft. The horizontal stop (53) and the vertical stop (54) are provided with screwed limiting bolts (55) to abut against and limit the swing angle of the first limiting rod (52).

4. The cylinder head core assembly two-piece synchronous automatic dip-coating fixture according to claim 3, characterized in that, A proximity switch (56) is installed on the horizontal stop (53).

5. The cylinder head core assembly two-piece synchronous automatic dip-coating fixture according to claim 1, characterized in that, The system includes a stroke limiting mechanism (7), which is located in the middle section of the slide rail (12) and is set on the front and rear sides of the main beam frame (1). It includes a second limiting rod (71) that is hinged to the main beam frame (1). The rod body of the second limiting rod (71) is hinged to the telescopic rod of the second telescopic cylinder (72) fixed on the main beam frame (1). The upper end of the movable frame (3) extends to the front and rear sides of the main beam frame (1). A first limiting block (73) is fixedly set on this extension. The first limiting block (73) is located on the left side of the second limiting rod (71). The second limiting rod (71) can be rotated to abut its far end against the first limiting block (73).

6. The cylinder head core assembly two-piece synchronous automatic dip-coating fixture according to claim 1, characterized in that, A rectangular mounting plate (8) is fixedly installed at the ends of the right rotating shaft (21) and the left rotating shaft (31). The clamping plate (4) is a rectangular plate and is fixed to the mounting plate (8) by bolts. Positioning blocks (41) are fixedly installed on the upper and lower sides of the clamping plate (4) by bolts. Clamping blocks (42) are fixedly installed on the inner side of the clamping plate (4) front and back by bolts.

7. The cylinder head core assembly two-piece synchronous automatic dip-coating fixture according to any one of claims 1 to 6, characterized in that, The system includes a leveling mechanism (9) for leveling the mounting plate (8) on the mounting bracket (2). The leveling mechanism (9) includes a second limiting block (91) that is fixed to the inner side of the mounting bracket (2) by bolts. The second limiting block (91) is located outside the right rotation shaft (21), and its inner side abuts against the side of the mounting plate (8). A fixing block (92) is provided outside the second limiting block (91), and a set screw (93) is screwed onto the fixing block (92) to abut against the outer side of the second limiting block (91).

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