Exhaust trepanning device for valve steel casting modeling

Abstract

The utility model discloses an exhaust trepanning device for molding a valve steel casting, which belongs to the field of cast steel valve manufacturing and comprises a mounting plate, a placing hole for placing a valve die body in a penetrating manner is arranged in the mounting plate, frame strips with multiple layers of heights are arranged in the placing hole and are step-shaped in the placing hole, and vertical plates are arranged above two sides of a mounting plate. A horizontal lead screw is arranged between the two vertical plates, a motor externally connected with a power source is arranged at one end of the lead screw, an adjusting block is movably arranged on the lead screw, an air cylinder is arranged at the bottom end of the adjusting block, the end of a telescopic rod of the air cylinder is connected with a horizontal plate, clamping plates are symmetrically arranged below the horizontal plate, the vertical section of each clamping plate is in an arc shape, and telescopic springs are arranged between the clamping plates and the horizontal plate. A drilling device connected to the bottom of the horizontal plate is arranged between the two clamping plates, and a movably-connected limiting sliding assembly is arranged between the vertical plate and the placement plate. And manual tapping and exhausting of the cast steel valve mold are effectively avoided, and the accuracy of the tapping position of the cast steel valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of cast steel valve manufacturing, in particular to an exhaust hole opening device for valve cast steel part molding. Background Art

[0002] Cast steel valve is one of many valve types. Its manufacturing material is mainly cast steel (carbon steel). Cast steel valve is widely used in many fields. For example, it can be used to connect or cut off pipeline media, prevent media backflow, change media flow direction, distribute media, etc.

[0003] During the casting process of valve steel castings, especially when the molten metal begins to fill the mold, the mold needs to be vented. The main purpose of the venting treatment is to effectively discharge the gas in the cavity and the waste gas generated during the solidification of the molten metal to prevent the occurrence of defects such as pores and shrinkage, thereby ensuring the quality and performance of the casting.

[0004] However, the outer wall of most existing cast steel valves is circular. During the process of opening holes for exhaust, the force exerted by people can easily cause the drill bit to slide on the outer surface of the cast steel valve, resulting in hole opening errors or position deviations. Utility Model Content

[0005] The utility model aims to provide an exhaust hole opening device for valve steel casting molding, which effectively solves the problem that the existing manual hole opening and exhaust process of the cast steel valve mold is easy to cause hole opening errors or inaccurate hole opening positions.

[0006] The technical solution of the utility model is as follows:

[0007] A device for opening an exhaust hole for molding valve steel castings comprises a placement plate, wherein the placement plate is provided with a placement hole that passes through a valve mold body, wherein the placement hole is provided with frame strips of multiple layers of height, and the frame strips are stepped in the placement hole, and vertical plates are provided above both sides of the placement plate, and a horizontal screw rod is provided between the two vertical plates, and a motor connected to an external power supply is provided at one end of the screw rod, and an adjustment block is movably provided on the screw rod, and a cylinder is provided at the bottom end of the adjustment block, and the end of the telescopic rod of the cylinder is connected to the horizontal plate, and a clamping plate is symmetrically provided below the horizontal plate, and the vertical cross-section of the clamping plate is arc-shaped, and a telescopic spring is provided between the clamping plate and the horizontal plate, and a drilling device connected to the bottom of the horizontal plate is provided between the two clamping plates, and a limit sliding assembly movably connected is provided between the vertical plate and the placement plate.

[0008] Furthermore, the cross section of the placement hole in the placement plate is rectangular, the frame strip is fixedly arranged around the inner wall of the placement plate, and the area of ​​the frame strip gradually decreases from bottom to top in the placement plate.

[0009] Furthermore, the top of the placement plate is symmetrically provided with limiting grooves, and the limiting grooves are located below the vertical plate.

[0010] Furthermore, the side wall of the placement plate which is perpendicular to the limiting groove is provided with limiting holes, and the limiting holes are evenly distributed on the placement plate.

[0011] Furthermore, the limiting sliding assembly includes a limiting pulley, a fixing plate and an inserting rod, a connecting strip is provided between the limiting pulley and the vertical plate, and the limiting pulley is slidably arranged in the limiting groove.

[0012] Furthermore, the fixing plate is connected to a side of the vertical plate away from the valve mold body, and the fixing plate is penetrated by the same limiting plug hole, and the insertion rod passes through the fixing plate and is inserted into the limiting plug hole on the placement plate.

[0013] Furthermore, support legs are provided at the four corners of the bottom end of the placement plate.

[0014] The advantages of the utility model are:

[0015] 1. The utility model achieves a pre-fixation of the valve mold body by placing the valve mold body on the frame bar in the placement plate. The cylinder drives the horizontal plate to move downward. When the drilling device starts to drill holes in the valve mold body for exhaust, the clamping plate will first contact the valve mold body. The clamping plate is arranged in an arc shape, which can better fit the surface of the valve mold body and further fix it, so that the drilling device can realize automatic drilling of the valve mold body. Compared with the manual method, the error situation in the process of drilling holes for exhaust in the valve mold body is reduced, and the accuracy of drilling holes is improved.

[0016] 2. The utility model arranges multiple layers of frame strips in the placement plate, and the area of ​​the frame strips gradually decreases from bottom to top in the placement hole, so that valve molds of different areas can be placed in the placement plate, which can adapt to valve molds of different areas and improve the flexibility of the device.

[0017] 3. The utility model sets a screw rod between two vertical plates, and there is an adjusting block on the screw rod. The drilling device can be adjusted to different positions by adjusting the position of the adjusting block. A limited sliding component is provided between the vertical plate and the placement plate. The limited pulley slides in the limited groove. When sliding to a suitable position, the insertion rod is inserted into the limited insertion hole, thereby adjusting the vertical plates at different positions, and the drill bit device can realize drilling and exhaust at different positions of the valve mold body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2It is a schematic diagram of the structure of the placement plate and frame plate components of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the horizontal plate and the card plate and other components of the utility model;

[0021] Figure 4 It is a schematic diagram of the limited sliding component and the vertical plate structure of the utility model.

[0022] Figure numerals: 1. mounting plate; 2. valve mold; 3. placement hole; 4. frame bar; 5. vertical plate; 6. screw rod; 7. motor; 8. adjustment block; 9. cylinder; 10. horizontal plate; 11. clamping plate; 12. telescopic spring; 13. drilling device; 14. limiting groove; 15. limiting plug hole; 16. limiting pulley; 17. fixing plate; 18. plug rod; 19. connecting strip; 20. supporting leg. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] like Figures 1 to 4 As shown, the utility model provides an exhaust hole opening device for valve casting molding, which includes a placement plate 1, and the interior of the placement plate 1 is provided with a placement hole 3 that penetrates and places the valve mold body 2. The cross-section of the placement hole 3 in the placement plate 1 is rectangular, and the area of ​​the placement hole 3 is larger than the area of ​​the valve mold body 2, so that the valve mold body 2 can be placed in the placement hole 3.

[0025] A frame strip 4 with multiple layers of height is provided in the placement hole 3. The frame strip 4 is stepped in the placement hole 3. The frame strip 4 is fixed around the inner wall of the placement plate 1. The area of ​​the frame strip 4 gradually decreases from bottom to top in the placement plate 1. This arrangement allows valve molds 2 of different sizes to be placed on the frame plate. The stepped arrangement can also pre-fix the valve mold 2.

[0026] Vertical plates 5 are provided above both sides of the placement plate, a horizontal screw rod 6 is provided between the two vertical plates 5, a motor 7 with an external power supply is provided at one end of the screw rod 6, an adjusting block 8 is movably provided on the screw rod 6, a cylinder 9 is provided at the bottom end of the adjusting block 8, the screw rod 6 passes through the two vertical plates 5, and the adjusting block 8 can be moved by rotating the screw rod 6, thereby adjusting the exhaust hole position of the drill device on the valve mold body 2.

[0027] The end of the telescopic rod of the cylinder 9 is connected to the horizontal plate 10, and a clamping plate 11 is symmetrically arranged below the horizontal plate 10. The vertical section of the clamping plate 11 is arc-shaped, and the arc-shaped clamping plate 11 can better fit the outer wall of the valve mold body 2. When the drill device is used to drill a hole, the clamping plate 11 presses and fixes the two sides of the position where the hole needs to be drilled in the valve mold body 2, ensuring that the valve mold body 2 will not move when drilling the hole, thereby improving the accuracy of the drilling position.

[0028] A telescopic spring 12 is provided between the clamping plate 11 and the horizontal plate 10 , so that when the cylinder 9 drives the clamping plate 11 to contact the valve mold body 2 , the telescopic spring 12 contracts and the drill device can drill a hole in the valve mold body 2 .

[0029] A drilling device 13 connected to the bottom of the horizontal plate 10 is provided between the two clamping plates 11 , and a movably connected limiting sliding assembly is provided between the vertical plate 5 and the placement plate 1 .

[0030] The top of the placement plate 1 is symmetrically provided with limiting grooves 14 , which are located below the vertical plate 5 . The limiting grooves 14 enable the limiting pulley 16 to move in the limiting grooves 14 , thereby flexibly adjusting the position of the vertical plate 5 .

[0031] Limiting holes 15 are provided on the side walls of the placement plate 1 which are perpendicular to the limiting groove 14. The limiting holes 15 are evenly distributed on the placement plate 1. After the position of the vertical plate 5 is fixed, the limiting rod 18 can be inserted into the limiting holes 15 to fix the vertical plate 5.

[0032] The limiting sliding assembly includes a limiting pulley 16 , a fixing plate 17 and an inserting rod 18 . A connecting strip 19 is provided between the limiting pulley 16 and the vertical plate 5 . The connecting strip 19 is located above the placement plate 1 , and the limiting pulley 16 is slidably arranged in the limiting groove 14 .

[0033] The fixing plate 17 is connected to the side of the vertical plate 5 away from the valve mold body 2, and the fixing rod extends out of the bottom end of the vertical plate 5. The same limiting socket 15 runs through the fixing plate 17. The plug rod 18 passes through the fixing plate 17 and is inserted into the limiting socket 15 on the placement plate 1 to fix the vertical plate 5.

[0034] Support legs 20 are provided at the four corners of the bottom end of the placement plate 1 .

[0035] Detailed usage and effects of the above embodiments:

[0036] When it is necessary to open a hole for exhaust in the valve mold 2, the valve mold 2 is placed in the placement hole 3 in the placement plate 1, and the valve mold 2 will be movably embedded in the step-shaped frame strip 4. At this time, the motor 7 is started, and the screw rod 6 is rotated to move the adjustment strip. When it moves to a suitable hole opening position, the cylinder 9 drives the horizontal plate 10 to move downward. During the movement, the clamping plate 11 will contact the outer surface of the valve mold 2. The two clamping plates 11 press the valve mold 2, and the telescopic spring 12 is compressed. While continuing to press downward, the started drilling device 13 will contact the valve mold 2 to perform exhaust drilling.

[0037] The insert rod 18 is pulled out from the limiting socket 15, and there is a limiting pulley 16 under the vertical plate 5. The limiting pulley 16 slides in the limiting groove 14. When it slides to a suitable position, the insert rod 18 is passed through the fixing plate 17 again and reinserted into the limiting socket 15 at a different position, thereby changing the position of the drill device and realizing opening holes on the valve mold body 2 at different positions.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust hole opening device for valve casting molding, characterized in that: The invention comprises a placement plate (1), wherein a placement hole (3) is provided inside the placement plate (1) and penetrates through the placement of a valve mold body (2), wherein frame bars (4) of multiple heights are provided inside the placement hole (3), wherein the frame bars (4) are in a stepped shape inside the placement hole (3), wherein vertical plates (5) are provided above both sides of the placement plate, wherein a horizontal screw rod (6) is provided between the two vertical plates (5), wherein a motor (7) connected to an external power source is provided at one end of the screw rod (6), wherein an adjustment block (8) is movably provided on the screw rod (6), wherein the bottom of the adjustment block (8) is provided with a plurality of vertical plates (5). A cylinder (9) is provided at the end, the telescopic rod end of the cylinder (9) is connected to the horizontal plate (10), a clamping plate (11) is symmetrically provided below the horizontal plate (10), the vertical section of the clamping plate (11) is arc-shaped, a telescopic spring (12) is provided between the clamping plate (11) and the horizontal plate (10), a drilling device (13) connected to the bottom of the horizontal plate (10) is provided between the two clamping plates (11), and a movable limit sliding component is provided between the vertical plate (5) and the placement plate (1).

2. The exhaust hole opening device for valve casting molding according to claim 1 is characterized in that: The cross section of the placement hole (3) in the placement plate (1) is rectangular, the frame strip (4) is fixedly arranged around the inner wall of the placement plate (1), and the area of ​​the frame strip (4) gradually decreases from bottom to top in the placement plate (1).

3. The exhaust hole opening device for valve casting molding according to claim 1 is characterized in that: The top of the placement plate (1) is symmetrically provided with limiting grooves (14), and the limiting grooves (14) are located below the vertical plate (5).

4. The exhaust hole opening device for valve casting molding according to claim 3 is characterized in that: The side wall of the placement plate (1) which is perpendicular to the limiting groove (14) is provided with limiting insertion holes (15), and the limiting insertion holes (15) are evenly distributed on the placement plate (1).

5. The exhaust hole opening device for valve casting molding according to claim 3 is characterized in that: The limiting sliding assembly comprises a limiting pulley (16), a fixing plate (17) and an inserting rod (18); a connecting strip (19) is provided between the limiting pulley (16) and the vertical plate (5); and the limiting pulley (16) is slidably arranged in the limiting groove (14).

6. The exhaust hole opening device for valve casting molding according to claim 5 is characterized in that: The fixing plate (17) is connected to a side of the vertical plate (5) away from the valve mold body (2), and the fixing plate (17) is penetrated by the same limiting plug hole (15). The insertion rod (18) passes through the fixing plate (17) and is inserted into the limiting plug hole (15) on the placement plate (1).

7. The exhaust hole opening device for valve casting molding according to claim 1 is characterized in that: Support legs (20) are provided at the four corners of the bottom end of the placement plate (1).

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