Valve casting edge polishing device

Abstract

The utility model provides a valve casting edge grinding device, including the mounting seat for bearing valve casting, the mounting seat top is provided with four groups of the driving block of mutual ninety degrees distribution and slides, the one side of each group of driving block is installed the pivot and penetrates, the left and right ends of pivot all install the clamping block, the bottom of driving block rotatoryly connected with drive link, drive link far from the one end of driving block rotatoryly connected with mounting bracket, the top middle part of mounting bracket is installed electric jar, and the bottom fixed connection of electric jar and mounting seat, the utility model discloses through electric jar and mounting bracket, drive link, driving block, clamping block cooperation uses, and electric jar output end abuts mounting seat and through mounting bracket drive drive link and promote driving block sliding, make clamping block from all around clamping valve casting, has realized to the stable clamping of valve casting non - polishing area, and clamping block can slide with driving block and adapt to different specifications casting, the advantage is to avoid the clamping structure to shade the edge to be polished, ensures that the edge grinds no interference.

Description

Technical Field

[0001] This utility model belongs to the field of valve processing technology, and more specifically, it relates to a device for grinding the edges of valve castings. Background Technology

[0002] As a core component of fluid control systems, the edge precision of valve castings (such as valve bodies, flanges, and valve covers) directly affects the valve's sealing performance, assembly efficiency, and service life. After casting, valve castings often have burrs, flash, and irregular protrusions on their edges, which need to be removed by grinding. This is especially true for critical areas such as flange edges, chamber opening edges, and channel chamfers, where grinding is required to achieve a high degree of flatness and smoothness to ensure a tight seal and prevent fluid leakage.

[0003] In existing technologies, the edge grinding of valve castings is mostly carried out in the following ways: First, manual operation with hand-held grinding tools, relying on the operator's experience to control the grinding force and range. Although this can adapt to the edge processing of castings with different shapes, it suffers from low efficiency and poor consistency in grinding accuracy. Moreover, long-term operation is prone to over-grinding or under-grinding of the edges due to human error, affecting the valve's sealing performance. Second, using general-purpose fixtures in conjunction with fixed grinding equipment, the valve casting is fixed by the fixture, and the grinding head is moved by a robotic arm or slide rail to achieve edge processing. Although this method can improve efficiency, the fixtures are mostly rigid fixed structures. For valve castings with irregular contours, the fixtures can easily block the edge to be ground, resulting in some areas not being able to contact the grinding head. The fixture position needs to be adjusted multiple times, making the operation cumbersome.

[0004] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a valve casting edge grinding device in order to achieve a more practical purpose. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a valve casting edge grinding device, which is achieved by the following specific technical means:

[0006] A device for grinding the edge of a valve casting includes a mounting base for supporting the valve casting. Four sets of drive blocks, arranged at 90-degree angles to each other, are slidably disposed on the top of the mounting base. A rotating shaft is installed through one side of each set of drive blocks. Clamping blocks are installed at both ends of the rotating shaft. A drive rod is rotatably connected to the bottom end of each drive block. A mounting frame is rotatably connected to the end of the drive rod away from the drive block. An electric cylinder is installed at the top center of the mounting frame. The output end of the electric cylinder is fixedly connected to the bottom end of the mounting base. Slider blocks are installed at the four corners of the bottom end of the mounting frame. The device also includes a base with a through groove at its top. The slider slides and the through groove are slidably adapted. The clamping blocks have notches on the side facing the valve casting to avoid the edge to be ground, and the clamping blocks only fit against the grinding area of ​​the valve casting.

[0007] Preferably, the top of the mounting base has four sets of interconnected T-shaped grooves at equal angles. The inner walls of the four sets of T-shaped grooves are slidably connected to T-shaped sliders. The tops of the four sets of T-shaped sliders are respectively fixedly connected to the bottom side of the corresponding drive block. The drive block forms a sliding fit with the mounting base through the T-shaped sliders.

[0008] Preferably, a disc is provided in the through groove, the outer wall of the disc slides in contact with the inner wall of the four sets of sliders, and multiple sets of brackets are installed at the bottom of the disc, with the ends of the multiple sets of brackets away from the disc being fixedly connected to the inner wall of the chassis.

[0009] Preferably, a gear ring is installed at the bottom of the four sets of sliders. A gear is meshed on one side of the gear ring. A motor is driven to the bottom of the gear. The outer wall of the motor is fixedly connected to the top of the bracket. The motor can drive the gear ring to rotate the slider, the mounting bracket and the valve casting in stages.

[0010] Preferably, sleeve rods are installed on both the left and right sides of the rotating shaft and the drive block. The sleeve rods on the left and right sides are distributed vertically. The outer walls of the two sets of sleeve rods arranged opposite each other are fitted with tension springs, which can limit the rotation range of the clamping block around the rotating shaft.

[0011] Preferably, the clamping block has an anti-slip layer on the side facing the non-grinding area of ​​the valve casting, and the anti-slip layer is in contact with the outer wall of the valve casting; the width of the clearance notch on the upper edge of the clamping block is adapted to the edge thickness of the valve casting, and the depth of the notch can accommodate the edge of the valve casting to be ground.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. This utility model uses an electric cylinder in conjunction with a mounting bracket, a drive rod, a drive block, and a clamping block. The output end of the electric cylinder abuts against the mounting base and drives the drive rod through the mounting bracket to push the drive block to slide, so that the clamping block clamps the valve casting from all sides, achieving stable clamping of the non-grinding area of ​​the valve casting. Moreover, the clamping block can slide with the drive block to adapt to castings of different specifications. The advantage is that it avoids the clamping structure from obstructing the edge to be ground, ensuring that the edge grinding is interference-free. Through the use of T-shaped grooves and T-shaped sliders, the drive block slides in the T-shaped grooves through the T-shaped sliders, achieving smooth sliding of the drive block along the top of the mounting base. The advantage is that it ensures that the four sets of drive blocks move towards or away from the casting synchronously, improving the clamping positioning accuracy and avoiding clamping instability caused by sliding offset.

[0014] 2. This utility model utilizes a slider in conjunction with a base, a through groove, and a disc. The slider slides within the through groove and contacts the outer wall of the disc, enabling smooth movement or rotation of the mounting bracket and valve casting. This reduces vibration during sliding, provides a stable working foundation for edge grinding, and improves the smoothness of the ground surface. Furthermore, the motor, gears, a gear ring, and a slider work together. The motor drives the gears to rotate the gear ring, which in turn drives the mounting bracket and casting to rotate, achieving indexing rotation of the valve casting. This allows for continuous grinding of multiple edges of the casting without the need for repeated manual adjustments, improving processing efficiency. Finally, the use of a sleeve rod and a tension spring, with the spring fitted onto the outer wall of the opposite sleeve rod, limits the rotation amplitude of the clamping block around the axis. This buffers the clamping force, preventing excessive pressure on the valve casting edges and thus protecting edge processing accuracy. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0016] Figure 2 This is a schematic diagram of the bottom end of this utility model.

[0017] Figure 3 yes Figure 1 Enlarged schematic diagram of structure A in the middle.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. Mounting base; 2. Valve casting; 3. Drive block; 4. Rotary shaft; 5. Clamping block; 6. Drive rod; 7. Mounting bracket; 8. Electric cylinder; 9. T-shaped slide; 10. T-shaped slider; 11. Through groove; 12. Slider; 13. Chassis; 14. Gear ring; 15. Gear; 16. Motor; 17. Disc; 18. Sleeve rod; 19. Tension spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example:

[0022] As attached Figure 1 To be continued Figure 3 As shown:

[0023] This utility model provides a valve casting edge grinding device, including a mounting base 1 for supporting the valve casting 2. Four sets of drive blocks 3 are slidably arranged on the top of the mounting base 1 at a 90-degree angle to each other. A rotating shaft 4 is installed through one side of each set of drive blocks 3. Clamping blocks 5 are installed at both ends of the rotating shaft 4. A drive rod 6 is rotatably connected to the bottom end of the drive block 3. A mounting frame 7 is rotatably connected to the end of the drive rod 6 away from the drive block 3. An electric cylinder 8 is installed in the middle of the top of the mounting frame 7. The output end of the electric cylinder 8 is fixedly connected to the bottom end of the mounting base 1. Slider blocks 12 are installed at the four corners of the bottom end of the mounting frame 7. It also includes a base plate 13 with a through groove 11 at the top. The slider 12 is slidably adapted to the through groove 11. The clamping block 5 has a notch on the side facing the valve casting 2 to avoid the edge to be ground, and the clamping block 5 only fits the grinding area of ​​the valve casting 2.

[0024] The mounting base 1 has four interconnected T-shaped grooves 9 at equal angles at its top. The inner walls of the four T-shaped grooves 9 are slidably connected to T-shaped sliders 10. The tops of the four T-shaped sliders 10 are fixedly connected to the bottom sides of the corresponding drive blocks 3. The drive blocks 3 form a sliding fit with the mounting base 1 through the T-shaped sliders 10. Through the sliding fit between the T-shaped grooves 9 and the T-shaped sliders 10, the drive blocks 3 can slide stably along the mounting base 1, realizing the precise guidance of the four drive blocks 3 to move closer to or further away from the valve casting 2. The advantage is to avoid the drive blocks 3 from deviating when sliding, improve the clamping and positioning accuracy, and ensure the clamping stability of the clamping block 5 on the casting.

[0025] The through groove 11 contains a disc 17. The outer wall of the disc 17 slides in contact with the inner wall of the four sets of sliders 12. Multiple brackets are installed at the bottom of the disc 17. The ends of the brackets away from the disc 17 are fixedly connected to the inner wall of the chassis 13. The outer wall of the disc 17 slides in contact with the inner wall of the four sets of sliders 12. With the brackets fixing the disc 17, the sliding trajectory of the sliders 12 is precisely limited. The advantage is that it ensures the stability of the sliders 12 when they drive the mounting frame 7 and the valve casting 2 to move or rotate, and reduces the impact of vibration on the edge grinding accuracy.

[0026] The bottom ends of the four sets of sliders 12 are all equipped with gear rings 14. A gear 15 is meshed on one side of the gear ring 14. The bottom end of the gear 15 is connected to a motor 16. The outer wall of the motor 16 is fixedly connected to the top of the bracket. The motor 16 can drive the gear ring 14 to rotate the sliders 12, the mounting bracket 7 and the valve casting 2 in stages. The motor 16 drives the gear 15 to rotate the gear ring 14, which in turn drives the mounting bracket 7 and the valve casting 2 to rotate in stages through the sliders 12. This achieves continuous and precise grinding of multiple edges of the valve casting 2. The advantage is that there is no need to manually adjust the position of the casting repeatedly, which improves processing efficiency and ensures the consistency of grinding accuracy of each edge.

[0027] Among them, the left and right sides of the rotating shaft 4 and the drive block 3 are equipped with sleeve rods 18. The sleeve rods 18 on the left and right sides are distributed vertically. The outer walls of the two sets of sleeve rods 18 are fitted with tension springs 19. The tension springs 19 can limit the rotation range of the clamping block 5 around the rotating shaft 4. The tension springs 19 are fitted on the outer walls of the vertically distributed relative sleeve rods 18, which realizes the flexible limitation of the rotation range of the clamping block 5 around the rotating shaft 4. The advantage is to buffer the clamping force and avoid deformation or damage caused by excessive squeezing of the edge of the valve casting 2 by the clamping block 5, thus protecting the edge machining accuracy.

[0028] The clamping block 5 has an anti-slip layer on the side facing the non-grinding area of ​​the valve casting 2, and the anti-slip layer is in contact with the outer wall of the valve casting 2. The width of the clearance notch on the upper edge of the clamping block 5 is adapted to the edge thickness of the valve casting 2, and the depth of the notch can accommodate the edge of the valve casting 2 to be ground. The anti-slip layer is in contact with the non-grinding area of ​​the valve casting 2 to increase friction. The edge clearance notch is adapted to the edge size of the casting. Together, they achieve stable clamping of the casting and full exposure of the edge to be ground. The advantage is to prevent the casting from sliding during grinding, and at the same time ensure that the grinding tool can contact the edge without obstruction, thus improving the grinding effect.

[0029] The working principle of this embodiment is as follows: The valve casting 2 to be ground is placed on the top of the mounting base 1. The electric cylinder 8 is started, and the output end of the electric cylinder 8 pushes the mounting base 1 upward. The upward movement of the mounting base 1 causes the drive block 3 to slide in the T-shaped slide groove 9. The four sets of drive blocks 3 are distributed at ninety degrees to each other, and at this time they are close to each other.

[0030] As the drive block 3 moves, the clamping block 5 approaches the valve casting 2, clamping it from four directions. Simultaneously, the motor 16 is started, driving the gear 15 to rotate. The rotation of the gear 15 drives the gear ring 14 to rotate, which in turn causes the slider 12, mounting bracket 7, and drive rod 6 to rotate together. Since the drive block 3 is rotatably connected to the drive rod 6, the drive block 3, rotating shaft 4, and clamping block 5 also rotate, thereby causing the clamped valve casting 2 to rotate for grinding. After clamping is completed, the output end of the electric cylinder 8 retracts, and the elastic force of the tension spring 19 resets the clamping block 5, preparing it for the next clamping operation.

[0031] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A device for grinding the edges of valve castings, characterized in that: The system includes a mounting base (1) for supporting a valve casting (2). Four sets of drive blocks (3) are slidably arranged at ninety degrees to each other on the top of the mounting base (1). A rotating shaft (4) is installed through one side of each set of drive blocks (3). Clamping blocks (5) are installed at both ends of the rotating shaft (4). A drive rod (6) is rotatably connected to the bottom end of each drive block (3). A mounting bracket (7) is rotatably connected to the end of the drive rod (6) away from the drive block (3). The top of the mounting bracket (7)... An electric cylinder (8) is installed in the middle of the end. The output end of the electric cylinder (8) is fixedly connected to the bottom end of the mounting base (1). Slider (12) is installed at each of the four corners of the bottom end of the mounting bracket (7). The bracket also includes a base (13) with a through groove (11) at the top. The slider (12) slides and adapts to the through groove (11). The clamping block (5) has a notch on the side facing the valve casting (2) to avoid the edge to be polished. The clamping block (5) only fits the polishing area of ​​the valve casting (2).

2. The equipment for grinding the edges of valve castings according to claim 1, characterized in that: The top of the mounting base (1) is provided with four sets of interconnected T-shaped grooves (9) at equal angles. The inner walls of the four sets of T-shaped grooves (9) are slidably connected with T-shaped sliders (10). The tops of the four sets of T-shaped sliders (10) are respectively fixedly connected to the bottom side of the corresponding driving block (3). The driving block (3) forms a sliding fit with the mounting base (1) through the T-shaped sliders (10).

3. The equipment for grinding the edges of valve castings according to claim 1, characterized in that: A disc (17) is provided in the through groove (11). The outer wall of the disc (17) slides in contact with the inner wall of the four sets of sliders (12). Multiple sets of brackets are installed at the bottom of the disc (17). The ends of the multiple sets of brackets away from the disc (17) are fixedly connected to the inner wall of the chassis (13).

4. The equipment for grinding the edges of valve castings according to claim 3, characterized in that: The bottom ends of the four sets of sliders (12) are all equipped with a gear ring (14). A gear (15) is meshed on one side of the gear ring (14). The bottom end of the gear (15) is connected to a motor (16). The outer wall of the motor (16) is fixedly connected to the top of the bracket. The motor (16) can drive the gear ring (14) to rotate the sliders (12), the mounting bracket (7) and the valve casting (2) in stages.

5. The equipment for grinding the edges of valve castings according to claim 1, characterized in that: Both the rotating shaft (4) and the drive block (3) are equipped with sleeve rods (18) on the left and right sides. The sleeve rods (18) on the left and right sides are distributed vertically. The outer walls of the two sets of sleeve rods (18) are fitted with tension springs (19). The tension springs (19) can limit the rotation amplitude of the clamping block (5) around the rotating shaft (4).

6. The equipment for grinding the edges of valve castings according to claim 1, characterized in that: The clamping block (5) is provided with an anti-slip layer on the side facing the non-grinding area of ​​the valve casting (2), and the anti-slip layer is in contact with the outer wall of the valve casting (2); the width of the clearance notch on the upper edge of the clamping block (5) is adapted to the edge thickness of the valve casting (2), and the depth of the notch can accommodate the edge of the valve casting (2) to be ground.

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