A cylinder head sand core gripping fixture

Abstract

The application relates to a cylinder head sand core grabbing clamp, which comprises, from top to bottom, a fixing plate, a guide plate and a lifting plate, positioning guide rods are arranged at four corners of the fixing plate, the positioning guide rods pass through the guide plate, and the lifting plate is connected with the fixing plate through a lifting assembly; a sand core supporting assembly is arranged on the guide plate, and a riser sand core supporting assembly is arranged on the lifting plate; the sand core supporting assembly comprises front and rear sand core supporting assemblies and left and right sand core supporting assemblies, the front and rear sand core supporting assemblies are located inside the left and right sand core supporting assemblies, and the bottom surface of the riser sand core supporting assembly is higher than that of the front and rear sand core supporting assemblies. Through the arrangement of the front and rear sand core supporting assemblies, the left and right sand core supporting assemblies and the riser sand core supporting assembly, the sand core can be grabbed from multiple dimensions, the phenomenon of sand core separation or dumping can be effectively avoided, and the quality of the sand core is guaranteed.

Description

Technical Field

[0001] This invention relates to a gripping fixture, specifically a gripping fixture for cylinder head sand cores, which is mainly used in automatic cylinder head casting production lines. Background Technology

[0002] In cylinder head casting production systems, sand cores need to be placed from a fixed position into the casting mold, and the sand core clamping device is a key piece of equipment for handling sand cores. Traditional sand core clamping devices have a small contact area between the clamping components and the sand core, which easily leads to stress concentration, causing damage or breakage of the sand core during handling. In addition, the sand core lacks effective axial (vertical) fixation, posing a risk of separation or tipping for larger or segmented sand cores. These problems directly affect the dimensional accuracy of the final casting and may even lead to product scrap. Furthermore, existing sand core clamping devices are often designed for specific types of sand cores, making it very inconvenient to change and adjust the clamps when producing castings of different specifications.

[0003] Therefore, this invention is proposed. Summary of the Invention

[0004] In view of the above-mentioned technical problems of the prior art, the purpose of the present invention is to provide a gripping fixture for cylinder head sand cores. Through the arrangement of front and rear sand core support components, left and right sand core support components and riser sand core support components, the sand core can be gripped from multiple dimensions, which can effectively avoid the occurrence of sand core separation or tilting, and ensure the quality of the sand core.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: A gripper for holding cylinder head sand cores includes, from top to bottom, a fixed plate, a guide plate, and a lifting plate. The fixed plate has positioning guide rods at each of its four corners, and these guide rods all pass through the guide plate. The lifting plate is connected to the fixed plate via a lifting assembly. The guide plate has a sand core support assembly, and the lifting plate has a riser sand core support assembly. The sand core support assembly includes front and rear sand core support assemblies and left and right sand core support assemblies. The front and rear sand core support assemblies are located inside the left and right sand core support assemblies, and the bottom surface of the riser sand core support assembly is higher than that of the front and rear sand core support assemblies.

[0006] The aforementioned front and rear sand support core assemblies include a front sand support core assembly and a rear sand support core assembly. The front sand support core assemblies consist of two identical front sand support core assemblies, which move left and right along the guide plate. The rear sand support core assembly moves back and forth along the guide plate.

[0007] The aforementioned front sand core support assembly includes a front sand core support cylinder installed at the front of the guide plate. The output shaft of the front sand core support cylinder is connected to a front sand core support transmission rod. The guide plate is provided with a sliding groove. The front sand core support transmission rod passes through the sliding groove and is connected to a front sand core support sliding block. The lower part of the guide plate is provided with a front sand core support slide rail. The front sand core support sliding block slides on the front sand core support slide rail, and the front sand core support sliding block is connected to a front sand core support rod. The bottom of the front sand core support rod is provided with a front sand core support block.

[0008] The rear sand core support assembly includes a rear sand core support cylinder installed at the rear of the guide plate. The output shaft of the rear sand core support cylinder is connected to a rear sand core support transmission rod. The rear sand core support transmission rod is connected to a rear sand core support sliding block. The lower part of the guide plate is provided with a rear sand core support slide rail. The rear sand core support sliding block slides on the rear sand core support slide rail and is connected to a rear sand core support rod mounting plate. The rear sand core support rod mounting plate is provided with several rear sand core support rods arranged side by side, and each rear sand core support rod has a rear sand core support block at its bottom.

[0009] The front sand core support rod is equipped with a front sand core clamping assembly, which is located above the front sand core support block; the rear sand core support rod is equipped with a rear sand core clamping assembly, which is located above the rear sand core support block.

[0010] The front sand core clamping assembly includes a front clamping cylinder, the output end of which is connected to a front clamping component. The front sand core support rod is provided with a front clamping adjustment groove, and the front clamping component is located in the front clamping adjustment groove and moves within the front clamping adjustment groove. The rear sand core clamping assembly includes a rear clamping cylinder, the output end of which is connected to a rear clamping component.

[0011] The left and right sand core support assembly includes a left sand core support cylinder and a right sand core support cylinder installed on both sides of the guide plate. The left sand core support cylinder is connected to the left sand core support rod, and the right sand core support cylinder is connected to the right sand core support rod. The bottom of the left sand core support rod is provided with a left sand core support block, and the bottom of the right sand core support rod is provided with a right sand core support block.

[0012] The lifting assembly includes lifting cylinders installed on both sides of the lifting plate. Lifting guide rods are provided on both sides of the lifting cylinders. The lifting guide rods are connected to the fixed plate. The lifting plate moves up and down relative to the fixed plate along the lifting guide rods under the drive of the lifting cylinders.

[0013] The lifting plate is equipped with a front riser support cylinder and a rear riser support cylinder on its front and rear sides, respectively. The front riser support cylinder includes a front left riser support cylinder and a front right riser support cylinder. The front left riser support cylinder is connected to a front left riser support rod, and the front right riser support cylinder is connected to a front right riser support rod. The bottom of the front left riser support rod is provided with a front left riser support block. The front right riser support cylinder... The bottom of the support rod is provided with a front right riser sand core support block; the rear riser sand core support cylinder includes a rear left riser sand core support cylinder and a rear right riser sand core support cylinder, the rear left riser sand core support cylinder is connected to a rear left riser sand core support rod, the rear right riser sand core support cylinder is connected to a rear right riser sand core support rod, the bottom of the rear left riser sand core support rod is provided with a rear left riser sand core support block, and the bottom of the rear right riser sand core support rod is provided with a rear right riser sand core support block.

[0014] A robot connecting flange is provided above the fixed plate, an XY plane floating module is provided below the robot connecting flange, and a valve island is provided on one side of the robot connecting flange; an air blowing assembly is provided below the guide plate, and the air blowing assembly is located above the front sand core support rod.

[0015] The cylinder head sand core gripper of the present invention has the following beneficial effects: 1. The present invention is provided with a front sand core support assembly and a rear sand core support assembly. The front sand core support assembly can move left and right, and the rear sand core support assembly can move back and forth, together completing the clamping of the sand core. Furthermore, the clamping is more stable through the combined action of the sand core support block and the clamping assembly.

[0016] 2. The present invention is provided with left and right sand core support assemblies, wherein the left and right sand core support rods are driven by independent cylinders, and the left and right sides do not affect each other, thereby reducing the cost of maintenance and replacement.

[0017] 3. The lifting plate in this invention is provided with a front left riser sand core support block, a front right riser sand core support block, a rear left riser sand core support block and a rear right riser sand core support block, which together complete the clamping of the riser sand core, so that the sand core is effectively fixed in the axial (vertical direction), avoiding the risk of separation or tipping for larger or segmented sand cores.

[0018] 4. In this invention, all sand core support rods are moved by cylinders, making them suitable for any type of sand core and highly versatile. Attached Figure Description

[0019] Figure 1 and 2 These are three-dimensional structural diagrams of the present invention viewed from different angles. Figure 3 This is a schematic diagram of the main structure of the present invention; Figure 4 This is a three-dimensional structural diagram of the present invention viewed from the rear. Figure 5 This is a schematic diagram of the rear view structure of the present invention; Figure 6 This is a side view of the structure of the present invention; Figure 7 This is a top view of the structure of the present invention; Figure 8 This is a schematic diagram of the guide plate in the present invention; Among them, 1 is the fixed plate, 2 is the guide plate, 3 is the lifting plate, 4 is the robot connecting flange, 5 is the XY plane floating module, 6 is the valve island, 7 is the air blowing assembly, 8 is the positioning guide rod, 81 is the positioning assembly, 9 is the front sand core support cylinder, 10 is the output shaft of the front sand core support cylinder, 11 is the front sand core support transmission rod, 12 is the sliding groove, 13 is the front sand core support sliding block, 14 is the front sand core support slide rail, 15 is the front sand core support rod, 16 is the front sand core support block, 17 is the rear sand core support cylinder, 18 is the output shaft of the rear sand core support cylinder, 19 is the rear sand core support transmission rod, 20 is the rear sand core support sliding block, 21 is the rear sand core support slide rail, 22 is the rear sand core support mounting plate, 23 is the rear sand core support rod, 24 is the rear sand core support block, 25 is the front pressing component, and 26 is the front pressing air... 27 is the front clamping adjustment groove, 28 is the rear clamping cylinder, 29 is the rear clamping component, 30 is the left sand core support cylinder, 31 is the right sand core support cylinder, 32 is the left sand core support rod, 33 is the right sand core support rod, 34 is the left sand core support block, 35 is the right sand core support block, 36 is the lifting cylinder, 37 is the lifting guide rod, 38 is the front left riser sand core support cylinder, and 39 is the front right riser sand core support cylinder. Cylinder, 40 is the front left riser sand core support rod, 41 is the front right riser sand core support rod, 42 is the front left riser sand core support block, 43 is the front right riser sand core support block, 44 is the rear left riser sand core support cylinder, 45 is the rear right riser sand core support cylinder, 46 is the rear left riser sand core support rod, 47 is the rear left riser sand core support block, 48 is the rear right riser sand core support rod, and 49 is the rear right riser sand core support block. Detailed Implementation

[0020] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0021] like Figure 1-8As shown, the cylinder head sand core gripping fixture of the present invention includes, from top to bottom, a fixed plate 1, a guide plate 2, and a lifting plate 3. A robot connecting flange 4 is located above the fixed plate 1, an XY plane floating module 5 is located below the robot connecting flange 4, and a valve island 6 is located on one side of the robot connecting flange 4. The XY plane floating module 5 is used to control the movement of the sand core support rod, and the valve island 6 is used to control the operation of each cylinder. The specific structure and working principle of the XY plane floating module 5 and the valve island 6 are common knowledge in the field and are not the content to be protected by this invention, and will not be elaborated here. An air blowing assembly 7 is located below the guide plate 2, above the front sand core support rod 15. Positioning guide rods 8 are provided at each of the four corners of the fixed plate 1, and all positioning guide rods 8 pass through the guide plate 2. The lifting plate 3 is connected to the fixed plate 1 via the lifting assembly. A positioning assembly 81 is provided at the lower part of the positioning guide rods 8, which can determine the height of the guide plate 2 and the lifting plate 3 according to the specific size and height of the sand core, and is used for positioning.

[0022] The inventive point of this invention is that: the guide plate 2 is provided with a sand core support assembly, and the lifting plate 3 is provided with a riser sand core support assembly; the sand core support assembly includes a front and rear sand core support assembly and a left and right sand core support assembly, the front and rear sand core support assembly is located inside the left and right sand core support assembly, and the bottom surface of the riser sand core support assembly is higher than the front and rear sand core support assembly.

[0023] Specifically: The left and right sand core supporting assembly of this invention includes a left sand core supporting cylinder 30 and a right sand core supporting cylinder 31 installed on both sides of the guide plate 2. The left sand core supporting cylinder 30 is connected to a left sand core supporting rod 32, and the right sand core supporting cylinder 31 is connected to a right sand core supporting rod 33. The bottom of the left sand core supporting rod 32 is provided with a left sand core supporting block 34, and the bottom of the right sand core supporting rod 33 is provided with a right sand core supporting block 35. The left sand core supporting rod 32 moves left and right under the drive of the left sand core supporting cylinder 30, and the right sand core supporting rod 33 moves left and right under the drive of the right sand core supporting cylinder 31, ultimately achieving the purpose of clamping the sand core from both sides.

[0024] The front and rear sand core support assemblies of the present invention include a front sand core support assembly and a rear sand core support assembly. The front sand core support assemblies consist of two identical left and right front sand core support assemblies, which move left and right along the guide plate 2. The rear sand core support assembly moves back and forth along the guide plate 2 to achieve clamping and support of the sand core.

[0025] The front sand core support assembly includes a front sand core support cylinder 9 installed at the front of the guide plate 2. The output shaft 10 of the front sand core support cylinder is connected to a front sand core support transmission rod 11. The guide plate 2 is provided with a sliding groove 12. The front sand core support transmission rod 11 passes through the sliding groove 12 and is connected to a front sand core support sliding block 13. The lower part of the guide plate 2 is provided with a front sand core support slide rail 14. The front sand core support sliding block 13 slides on the front sand core support slide rail 14, and the front sand core support sliding block 13 is connected to a front sand core support rod 15. The bottom of the front sand core support rod 15 is provided with a front sand core support block 16. The rear sand core support assembly includes a rear sand core support cylinder 17 installed at the rear of the guide plate 2. The output shaft 18 of the rear sand core support cylinder is connected to a rear sand core support transmission rod 19, and the rear sand core support transmission rod 19 is connected to a rear sand core support sliding block 20. A rear sand core support slide rail 21 is provided at the lower part of the guide plate 2. The rear sand core support sliding block 20 slides on the rear sand core support slide rail 21, and is connected to a rear sand core support rod mounting plate 22. Several rear sand core support rods 23 are arranged side by side on the rear sand core support rod mounting plate 22, and each rear sand core support rod 23 has a rear sand core support block 24 at its bottom. Here, the stability of supporting the sand core is best when there are two rear sand core support rods 23, and the two rear sand core support rods 23 are located on the left and right sides of the rear sand core support rod mounting plate 22.

[0026] Furthermore, to enhance the stability of the sand core, the front sand core support rod 15 of this invention is equipped with a front sand core clamping assembly, which is located above the front sand core support block 16; the rear sand core support rod 23 is equipped with a rear sand core clamping assembly, which is located above the rear sand core support block 24. The front sand core clamping assembly includes a front clamping cylinder 26, the output end of which is connected to a front clamping component 25. The front sand core support rod 15 is equipped with a front clamping adjustment groove 27, and the front clamping component 25 is located within the front clamping adjustment groove 27 and can move within it, allowing its height to be adjusted according to the actual size of the sand core, thus achieving the purpose of clamping the sand core. The rear sand core clamping assembly includes a rear clamping cylinder 28, the output end of which is connected to a rear clamping component 29, which together with the rear sand core support block 24 clamps the sand core.

[0027] Furthermore, the lifting assembly in this invention includes lifting cylinders 36 installed on both sides of the lifting plate 3. Lifting guide rods 37 are provided on both sides of the lifting cylinders 36. The lifting guide rods 37 are connected to the fixed plate 1. Under the drive of the lifting cylinders 36, the lifting plate 3 moves up and down relative to the fixed plate 1 along the lifting guide rods 37, thereby driving the riser sand core assembly to move up and down. The height can be adjusted according to the actual size of the riser sand core. The lifting plate 3 is equipped with a front riser support cylinder and a rear riser support cylinder on its front and rear sides, respectively. The front riser support cylinder includes a front left riser support cylinder 38 and a front right riser support cylinder 39. The front left riser support cylinder 38 is connected to a front left riser support rod 40, and the front right riser support cylinder 39 is connected to a front right riser support rod 41. The bottom of the front left riser support rod 40 is provided with a front left riser support block 42, and the bottom of the front right riser support rod 41 is provided with a front right riser support block 43. The rear riser support cylinder includes a rear left riser support cylinder 44 and a rear right riser support cylinder 45. The rear left riser support cylinder 44 is connected to a rear left riser support rod 46, and a rear left riser support block 47 is provided at the bottom of the rear left riser support rod 46. The rear right riser support cylinder 45 is connected to a rear right riser support rod 48, and a rear right riser support block 49 is provided at the bottom of the rear right riser support rod 48. The front left riser core support rod 40 moves back and forth under the drive of the front left riser core support cylinder 38; the front right riser core support rod 41 moves back and forth under the drive of the front right riser core support cylinder 39; the rear left riser core support rod 46 moves back and forth under the drive of the rear left riser core support cylinder 44; and the rear right riser core support rod 48 moves back and forth under the action of the rear right riser core support cylinder 45. After adjusting to the optimal position according to the actual size of the riser core, the riser core is held by the front left riser core support block 42, the front right riser core support block 43, the rear left riser core support block 47, and the rear right riser core support rod 48, thus achieving the clamping of the riser core.

[0028] This invention makes the gripping of sand cores more stable by independently clamping the front, back, left, right and risers, and each support rod is driven by an independent cylinder, which facilitates replacement and maintenance and reduces maintenance costs.

[0029] The above embodiments are only used to explain the inventive concept of the present invention, and are not intended to limit the protection of the present invention. Any non-substantial modifications made to the present invention using this concept should fall within the protection scope of the present invention.

Claims

1. A gripper for holding cylinder head sand cores, characterized in that: The structure, from top to bottom, includes a fixed plate, a guide plate, and a lifting plate. The fixed plate has positioning guide rods at each of its four corners, and these guide rods all pass through the guide plate. The lifting plate is connected to the fixed plate via a lifting assembly. The guide plate has a sand-supporting core assembly, and the lifting plate has a riser-supporting sand-supporting core assembly. The sand-supporting core assembly includes front and rear sand-supporting core assemblies and left and right sand-supporting core assemblies. The front and rear sand-supporting core assemblies are located inside the left and right sand-supporting core assemblies, and the bottom surface of the riser-supporting sand-supporting core assembly is higher than that of the front and rear sand-supporting core assemblies.

2. The gripper for holding cylinder head sand cores as described in claim 1, characterized in that: The aforementioned front and rear sand support core assemblies include a front sand support core assembly and a rear sand support core assembly. The front sand support core assemblies consist of two identical front sand support core assemblies, which move left and right along the guide plate. The rear sand support core assembly moves back and forth along the guide plate.

3. The gripper for holding cylinder head sand cores as described in claim 2, characterized in that: The aforementioned front sand core support assembly includes a front sand core support cylinder installed at the front of the guide plate. The output shaft of the front sand core support cylinder is connected to a front sand core support transmission rod. The guide plate is provided with a sliding groove. The front sand core support transmission rod passes through the sliding groove and is connected to a front sand core support sliding block. The lower part of the guide plate is provided with a front sand core support slide rail. The front sand core support sliding block slides on the front sand core support slide rail, and the front sand core support sliding block is connected to a front sand core support rod. The bottom of the front sand core support rod is provided with a front sand core support block.

4. The gripper for holding cylinder head sand cores as described in claim 2, characterized in that: The rear sand core support assembly includes a rear sand core support cylinder installed at the rear of the guide plate. The output shaft of the rear sand core support cylinder is connected to a rear sand core support transmission rod. The rear sand core support transmission rod is connected to a rear sand core support sliding block. The lower part of the guide plate is provided with a rear sand core support slide rail. The rear sand core support sliding block slides on the rear sand core support slide rail and is connected to a rear sand core support rod mounting plate. The rear sand core support rod mounting plate is provided with several rear sand core support rods arranged side by side, and each rear sand core support rod has a rear sand core support block at its bottom.

5. The gripper for holding cylinder head sand cores as described in claim 3, characterized in that: The front sand core support rod is equipped with a front sand core clamping assembly, which is located above the front sand core support block; the rear sand core support rod is equipped with a rear sand core clamping assembly, which is located above the rear sand core support block.

6. The gripping fixture for cylinder head sand cores as described in claim 5, characterized in that: The front sand core clamping assembly includes a front clamping cylinder, the output end of which is connected to a front clamping component. The front sand core support rod is provided with a front clamping adjustment groove, and the front clamping component is located in the front clamping adjustment groove and moves within the front clamping adjustment groove. The rear sand core clamping assembly includes a rear clamping cylinder, the output end of which is connected to a rear clamping component.

7. The gripper for holding cylinder head sand cores as described in claim 1, characterized in that: The left and right sand core support assembly includes a left sand core support cylinder and a right sand core support cylinder installed on both sides of the guide plate. The left sand core support cylinder is connected to the left sand core support rod, and the right sand core support cylinder is connected to the right sand core support rod. The bottom of the left sand core support rod is provided with a left sand core support block, and the bottom of the right sand core support rod is provided with a right sand core support block.

8. The gripper for holding cylinder head sand cores as described in claim 1, characterized in that: The lifting assembly includes lifting cylinders installed on both sides of the lifting plate. Lifting guide rods are provided on both sides of the lifting cylinders. The lifting guide rods are connected to the fixed plate. The lifting plate moves up and down relative to the fixed plate along the lifting guide rods under the drive of the lifting cylinders.

9. The gripper for holding cylinder head sand cores as described in claim 1 or 8, characterized in that: The lifting plate is equipped with a front riser support cylinder and a rear riser support cylinder on its front and rear sides, respectively. The front riser support cylinder includes a front left riser support cylinder and a front right riser support cylinder. The front left riser support cylinder is connected to a front left riser support rod, and the front right riser support cylinder is connected to a front right riser support rod. The bottom of the front left riser support rod is provided with a front left riser support block. The front right riser support cylinder... The bottom of the support rod is provided with a front right riser sand core support block; the rear riser sand core support cylinder includes a rear left riser sand core support cylinder and a rear right riser sand core support cylinder, the rear left riser sand core support cylinder is connected to a rear left riser sand core support rod, the rear right riser sand core support cylinder is connected to a rear right riser sand core support rod, the bottom of the rear left riser sand core support rod is provided with a rear left riser sand core support block, and the bottom of the rear right riser sand core support rod is provided with a rear right riser sand core support block.

10. The gripper for holding cylinder head sand cores as described in claim 3, characterized in that: A robot connecting flange is provided above the fixed plate, an XY plane floating module is provided below the robot connecting flange, and a valve island is provided on one side of the robot connecting flange; an air blowing assembly is provided below the guide plate, and the air blowing assembly is located above the front sand core support rod.

Images