Stop valve machining equipment

Abstract

The utility model discloses stop valve processing equipment, and particularly relates to the technical field of valve processing equipment, which comprises a base, support frames fixedly connected to the front side and the rear side of the upper end of the base, an injection mold arranged between the two support frames, a sand core injection mold fixedly connected to the inner side of the rear end of a front mold base, and a valve body injection mold arranged on the outer side of the sand core injection mold. A first threaded hole is formed in the rear side of the connecting plate, a bolt is in threaded connection with the inner side of the first threaded hole, a grinding mechanism is arranged on the upper side of the right end of the base and comprises a motor, a second hydraulic rod is fixedly connected to the output end of the motor, and a grinding brush is fixedly connected to the output end of the second hydraulic rod. According to the utility model, the bolt is rotationally matched with the first threaded hole and the second threaded hole to increase or decrease the valve body injection mold, so that the injection molding of the sand core and the valve body is performed on the same mold, and the motor works to drive the polishing brush at the output end of the motor to polish the surface of an injection molding workpiece, thereby ensuring that the inner and outer surfaces of the processed stop valve body are smooth.

Description

Technical Field

[0001] The utility model relates to the technical field of valve processing equipment, in particular to stop valve processing equipment. Background Art

[0002] The stop valve is composed of a valve body, a valve cover, a valve cover gasket, a valve stem, etc. The stop valve is divided into four types according to the channel direction: a straight-through stop valve, a DC stop valve, an angle stop valve, and a plunger stop valve. It is widely used in chemical, pharmaceutical, light industry, papermaking, metallurgy, textile, natural gas, municipal engineering, food, shipbuilding, power and other industries. The parent metal of the stop valve disc is A42AP material, and the surfacing sealing surface is made of tungsten inert gas arc welding and surfacing with cobalt-chromium-tungsten carbide welding wire. The working principle is to rotate the handwheel to rotate the threaded guide sleeve, and the anti-rotation block limits the rotation of the valve stem, so the rotation of the handwheel is converted into the up and down linear motion of the valve stem; relying on the valve stem pressure, the valve disc sealing surface and the valve seat sealing surface are closely fitted to prevent the flow of the medium.

[0003] In the prior art, valve body processing needs to be divided into two steps and carried out separately. It is necessary to build a sand core first, and then use the sand core as a mold to cast the valve body of the stop valve. In order to ensure that the inner and outer surfaces of the injection-molded valve body are smooth, the surface of the sand core that is initially injection-molded needs to be polished to ensure its surface smoothness. Therefore, it is necessary to wait until the sand core and the mold are cooled and then remove them repeatedly. During the process of removing and moving the workpiece, its shape may change, resulting in the workpiece being scrapped. In addition, this process requires two injection molds and consumes a long time during operation, and the processing efficiency of the stop valve body is not high.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a stop valve processing equipment is proposed. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a stop valve processing device.

[0006] In order to achieve the above-mentioned objectives, the utility model adopts the following technical scheme: a stop valve processing equipment comprises a base, and the front and rear sides of the upper end of the base are fixedly connected to a support frame, the support frame comprises a first support rod, the upper end of the first support rod is rotatably connected to the second support rod, the rear end of the first support rod is fixedly connected to the first hydraulic rod, an injection mold is arranged between the two support frames, the injection mold comprises a front mold seat and a rear mold seat, an injection hole is arranged in the middle of the upper end of the injection mold, a sand core injection mold is fixedly connected to the inner side of the rear end of the front mold seat, a valve body injection mold is arranged on the outer side of the sand core injection mold, the upper and lower ends of the valve body injection mold are fixedly connected to a connecting plate, a first threaded hole is arranged on the rear side of the connecting plate, a bolt is threadedly connected to the inner side of the first threaded hole, and a grinding mechanism is arranged on the upper side of the right end of the base, the grinding mechanism comprises a motor, the output end of the motor is fixedly connected to the second hydraulic rod, and the output end of the second hydraulic rod is fixedly connected to a grinding brush.

[0007] As a further description of the above technical solution:

[0008] The four corners of the rear end of the front mold base are fixedly connected with first guide pillars, and the rear end of the front mold base is provided with a second groove.

[0009] The first guide column and the inner side of the first groove are used to slide together to align the front and rear mold bases, thereby ensuring the integrity of the injected workpiece.

[0010] As a further description of the above technical solution:

[0011] The front end of the rear mold base is fixedly connected with a second guide column, and the four corners of the front end of the rear mold base are provided with first grooves.

[0012] The sliding fit between the second guide pillar and the inner side of the second groove is used to ensure that there is no position deviation between the two injection molds.

[0013] As a further description of the above technical solution:

[0014] A second threaded hole is provided inside the injection mold, and the inside of the second threaded hole is rotationally matched with the rear side of the bolt.

[0015] The valve body injection mold is realized by utilizing the rotational cooperation between the bolt and the first threaded hole and the second threaded hole as a further description of the above technical solution:

[0016] The lower end of the first support rod is fixedly connected to the upper end of the base, and the upper end of the second support rod is rotatably connected to the injection mold.

[0017] The length of the support frame is changed by the rotational cooperation between the first support rod and the second support rod, thereby changing the position of the injection mold.

[0018] As a further description of the above technical solution:

[0019] The output end of the first hydraulic rod is rotatably connected to the second support rod, and the two support frames are axially symmetrical on the base.

[0020] The telescopic movement of the first hydraulic rod is utilized to drive the second support rod to move up and down with the top end of the first support rod as the center of a circle, thereby driving the front and rear injection mold seats to move upward and merge.

[0021] As a further description of the above technical solution:

[0022] The lower end of the motor is fixedly connected to the right side of the upper end of the base, and the horizontal position of the grinding brush corresponds to the position of the sand core injection mold.

[0023] Ensure that the surface of the injection molded workpiece can be accurately polished when the polishing brush is used.

[0024] The utility model has the following beneficial effects:

[0025] 1. In the utility model, the valve body injection mold is added by the rotational cooperation between the bolt and the first threaded hole and the second threaded hole. When the valve body injection mold is in place, the sand core is completed by injection molding. When the valve body injection mold is removed, the valve body of the stop valve is completed by injection molding. There is no need to replace multiple sets of molds, which avoids the shape of the injection molded part changing during the movement, saving production time and cost.

[0026] 2. In the utility model, the grinding brush fixedly connected to the output end of the second hydraulic rod is moved to the mold after injection molding and cooling by the extension movement of the second hydraulic rod, and the grinding brush is driven by the motor to rotate at high speed to grind the sand core and the valve body surface, thereby ensuring that the inner and outer surfaces of the stop valve body are smooth. At the same time, it does not need to be removed multiple times, and continuous operation saves the processing time of the stop valve body and improves the processing efficiency of the stop valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional diagram of the stop valve processing equipment proposed by the utility model;

[0028] Figure 2 An exploded view of the stop valve processing equipment proposed by the utility model;

[0029] Figure 3 This is an expanded view of the stop valve processing equipment proposed by the utility model;

[0030] Figure 4 This is a schematic diagram of the valve body injection mold of the stop valve processing equipment proposed by the utility model.

[0031] Legend:

[0032] 1. Base; 2. Support frame; 21. First support rod; 22. Second support rod; 23. First hydraulic rod; 3. Injection mold; 31. Front mold base; 32. Rear mold base; 33. First guide column; 34. First groove; 35. Second guide column; 36. Second groove; 4. Injection hole; 5. Sand core injection mold; 6. Valve body injection mold; 7. Connecting plate; 71. First threaded hole; 72. Bolt; 73. Second threaded hole; 8. Grinding mechanism; 81. Motor; 82. Second hydraulic rod; 83. Grinding brush. DETAILED DESCRIPTION

[0033] Reference Figure 1-4 , an embodiment of the utility model provided: a stop valve processing equipment, including a base 1, a support frame 2 is fixedly connected to the front and rear sides of the upper end of the base 1, the support frame 2 includes a first support rod 21, the upper end of the first support rod 21 is rotatably connected to the second support rod 22, the rear end of the first support rod 21 is fixedly connected to the first hydraulic rod 23, an injection mold 3 is arranged between the two support frames 2, the injection mold 3 includes a front mold base 31 and a rear mold base 32, a sand core injection mold 5 is installed between the front mold base 31 and the rear mold base 32, an injection hole 4 is arranged in the middle of the upper end of the injection mold 3, a sand core injection mold 5 is fixedly connected to the inner side of the rear end of the front mold base 31, a valve body injection mold 6 is arranged on the outer side of the sand core injection mold 5, the upper and lower ends of the valve body injection mold 6 are fixedly connected to a connecting plate 7, and a first threaded hole 71 is arranged on the rear side of the connecting plate 7, A bolt 72 is threadedly connected to the inner side of a threaded hole 71. The rotational cooperation between the bolt 72 and the first threaded hole 71 and the second threaded hole 73 is used to allow the connecting plate 7 to take the valve body injection mold 6 away from the injection mold 3. Similarly, the front and rear mold bases are merged, and the valve body injection liquid is poured into the injection hole 4. A grinding mechanism 8 is arranged on the upper side of the right end of the base 1. The grinding mechanism 8 includes a motor 81. A second hydraulic rod 82 is fixedly connected to the output end of the motor 81. A grinding brush 83 is fixedly connected to the output end of the second hydraulic rod 82. The second hydraulic rod 82 is extended to drive the grinding brush 83 fixedly connected to its output end to approach the surface of the injection-molded sand core. The motor 81 is turned on to drive the second hydraulic rod 82 fixedly connected to its output end to rotate, thereby driving the grinding brush 83 to rotate to grind the surface of the sand core to ensure that the inner surface of the injection-molded valve body is smooth.

[0034] The four corners of the rear end of the front mold base 31 are fixedly connected with the first guide column 33, the rear end of the front mold base 31 is provided with a second groove 36, the front end of the rear mold base 32 is fixedly connected with the second guide column 35, the four corners of the front end of the rear mold base 32 are provided with a first groove 34, and a second threaded hole 73 is provided on the inner side of the injection mold 3, and the inner side of the second threaded hole 73 is rotatably matched with the rear side of the bolt 72, the lower end of the first support rod 21 is fixedly connected to the upper end of the base 1, the upper end of the second support rod 22 is rotatably connected to the injection mold 3, and the output end of the first hydraulic rod 23 is rotatably connected to the second support rod 22, and the two support frames 2 are axially symmetrical on the base 1, so that the first hydraulic rod 23 is extended, driving the second support rod 22 fixedly connected at its output end to move upward with the upper end of the first support rod 21 as the center of the circle, thereby driving the injection mold 3 to move upward with its own lower end as the center of the circle, and the lower end of the motor 81 is fixedly connected to the right side of the upper end of the base 1, and the horizontal position of the grinding brush 83 corresponds to the position of the sand core injection mold 5.

[0035] Working principle: First, install the sand core injection mold 5 between the front mold base 31 and the rear mold base 32, so that the first hydraulic rod 23 stretches, driving the second support rod 22 fixedly connected to its output end to move upward with the upper end of the first support rod 21 as the center of the circle, thereby driving the injection mold 3 to move upward with its own lower end as the center of the circle. The sliding fit between the first guide column 33 and the inner side of the first groove 34 and the sliding fit between the second guide column 35 and the inner side of the second groove 36 ensure that there is no position deviation when the two mold bases are merged. Pour the sand core injection liquid from the injection hole 4, and obtain the sand core after cooling. Similarly, open the front and rear mold bases, so that the second hydraulic rod 82 stretches, driving the grinding brush 83 fixedly connected to its output end to approach the surface of the injected sand core, and turn on the motor 81 to drive the second hydraulic rod fixedly connected to its output end The rotation of 82 drives the grinding brush 83 to rotate and grind the surface of the sand core to ensure that the outer surface of the injection molded valve body is smooth. After completion, the grinding brush 83 is retracted, and the rotational cooperation between the bolt 72 and the first threaded hole 71 and the second threaded hole 73 is used to make the connecting plate 7 take the valve body injection mold 6 away from the injection mold 3. Similarly, the front and rear mold bases are merged, and the valve body injection molding liquid is poured into the injection hole 4. After cooling, the two mold bases are opened, and the grinding brush 83 is used to grind the outer surface of the stop valve body again to ensure its outer surface is smooth. After completion, the processed valve body is taken out. The entire operation only requires one mold base, which avoids the shape of the injection molded workpiece changing during the mobile grinding process. Different sand core injection molds 5 and valve body injection molds 6 can be replaced, saving processing time and production costs, and improving the processing and production efficiency of the stop valve.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stop valve processing device, comprising a base (1), characterized in that: The upper end of the base (1) is fixedly connected to a support frame (2) at both the front and rear sides, the support frame (2) comprises a first support rod (21), the upper end of the first support rod (21) is rotatably connected to a second support rod (22), the rear end of the first support rod (21) is fixedly connected to a first hydraulic rod (23), an injection mold (3) is arranged between the two support frames (2), the injection mold (3) comprises a front mold base (31) and a rear mold base (32), an injection hole (4) is arranged in the middle of the upper end of the injection mold (3), and a sand core injection mold is fixedly connected to the inner side of the rear end of the front mold base (31). (5), a valve body injection mold (6) is arranged on the outside of the sand core injection mold (5), and a connecting plate (7) is fixedly connected to the upper and lower ends of the valve body injection mold (6), and a first threaded hole (71) is arranged on the rear side of the connecting plate (7), and a bolt (72) is threadedly connected to the inner side of the first threaded hole (71), and a grinding mechanism (8) is arranged on the upper side of the right end of the base (1), and the grinding mechanism (8) includes a motor (81), and a second hydraulic rod (82) is fixedly connected to the output end of the motor (81), and a grinding brush (83) is fixedly connected to the output end of the second hydraulic rod (82).

2. The stop valve processing equipment according to claim 1, characterized in that: The four corners of the rear end of the front mold base (31) are fixedly connected with first guide pillars (33), and the rear end of the front mold base (31) is provided with a second groove (36).

3. The stop valve processing equipment according to claim 1, characterized in that: A second guide column (35) is fixedly connected to the front end of the rear mold base (32), and first grooves (34) are arranged at four corners of the front end of the rear mold base (32).

4. The stop valve processing equipment according to claim 1, characterized in that: A second threaded hole (73) is provided inside the injection mold (3), and the inside of the second threaded hole (73) is rotationally matched with the rear side of the bolt (72).

5. The stop valve processing equipment according to claim 1, characterized in that: The lower end of the first support rod (21) is fixedly connected to the upper end of the base (1), and the upper end of the second support rod (22) is rotatably connected to the injection mold (3).

6. The stop valve processing equipment according to claim 1, characterized in that: The output end of the first hydraulic rod (23) is rotatably connected to the second support rod (22), and the two support frames (2) are axially symmetrical structures on the base (1).

7. The stop valve processing equipment according to claim 1, characterized in that: The lower end of the motor (81) is fixedly connected to the right side of the upper end of the base (1), and the horizontal position of the grinding brush (83) corresponds to the position of the sand core injection mold (5).

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