Grinding ball casting mold opening device

Abstract

The utility model discloses a grinding ball casting mold opening device which comprises a movable frame, a left extrusion mold opening device and a right extrusion mold opening device, and the left extrusion mold opening device and the right extrusion mold opening device are both installed on the movable frame. The left extrusion mold opening device comprises a positioning hinge plate, a V-shaped extrusion opening knife, a pull rod, a handle, a positioning strip and a positioning groove, the middle of the positioning hinge plate is hinged to the movable frame, the lower end of the positioning hinge plate is connected with the V-shaped extrusion opening knife, one end of the pull rod is hinged to the upper end of the positioning hinge plate, and the other end of the pull rod is connected with the handle; the positioning strip is mounted on the movable frame; the grinding ball casting mold opening device is simple in structure, convenient to use and practical, the left extrusion mold opening device and the right extrusion mold opening device are matched, the grinding ball shaping mold is rapidly opened, meanwhile, the grinding ball shaping mold is placed in advance, the movable frame is rapidly switched to the next grinding ball shaping mold for mold opening, and the purpose of improving the mold opening efficiency is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of casting mold opening technology, specifically relating to a grinding ball casting mold opening device. Background Technology

[0002] There are many types of grinding balls, the main varieties being high-chromium high-alloy cast iron, such as Cr8, Cr12, Cr15, Cr18, Cr24, Cr26, etc., and low-chromium cast iron, such as Cr2 and martensitic ductile iron. Martensitic ductile iron and low-chromium cast iron are of the same level in terms of wear resistance. Their difference lies in their manufacturing processes.

[0003] Grinding ball production generally uses a casting mold for one-time molding, followed by surface finishing through grinding. The grinding ball casting mold includes a male mold and a female mold, which are positioned by positioning pins. When opening the grinding ball casting mold, the mold is first erected using clamping pliers, and then the employee pries it open with a pry bar. During the prying process, the grinding ball casting mold needs to be rotated repeatedly, mainly because the positioning pins are prone to jamming, making it quite troublesome to manually open the grinding ball casting mold each time. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a grinding ball casting mold opening device, which is simple in structure, convenient and practical. By cooperating with the left extrusion mold opening device and the right extrusion mold opening device, the grinding ball forming mold can be opened quickly. At the same time, the grinding ball forming mold is pre-positioned, so that the moving frame can quickly switch to the next grinding ball forming mold for mold opening, thereby improving the mold opening efficiency.

[0005] A ball casting mold opening device includes a movable frame, a left extrusion mold opening device, and a right extrusion mold opening device, both of which are mounted on the movable frame. The left extrusion mold opening device includes a positioning hinge plate, a V-shaped extrusion support knife, a pull rod, a handle, a positioning strip, and positioning grooves. The positioning hinge plate is hinged to the movable frame at its center, and its lower end is connected to the V-shaped extrusion support knife. One end of the pull rod is hinged to the upper end of the positioning hinge plate, and the other end is connected to the handle. The positioning strip is mounted on the movable frame, and several positioning grooves are formed on the positioning strip and cooperate with the handle.

[0006] Preferably, the right extrusion mold opening device includes a swing rod, a foot pedal, an impact V-shaped blade, an impact weight block, an impact block, and a spring. One end of the swing rod is hinged to the movable frame, and the other end is connected to the impact V-shaped blade and the impact block on both sides, respectively. One end of the foot pedal is hinged to the swing rod, and the other end is connected to the impact weight block. The impact weight block cooperates with the impact block. One end of the spring is connected to the movable frame, and the other end is connected to the foot pedal.

[0007] Preferably, a positioning rod is installed on the positioning strip.

[0008] Preferably, the movable frame is equipped with symmetrically arranged positioning plates.

[0009] Preferably, the positioning hinge plate is connected with reinforcing ribs for fixing the V-shaped extrusion blade.

[0010] Preferably, the device includes bearings, and the hinge joints of the positioning hinge plate and the swing rod are connected by bearings.

[0011] Preferably, a foot pedal is installed on the foot pedal.

[0012] Preferably, it also includes a ball-forming mold, which includes a male mold, a female mold, a chamfer, and positioning posts. At least two of the positioning posts are connected to the male mold. The female mold has positioning holes that mate with the positioning posts. The chamfer is provided on the side of the male mold and the female mold that are close to each other. Beneficial effects

[0013] (1) The present invention provides a grinding ball casting mold opening device, which is simple in structure, convenient and practical. By cooperating with the left extrusion mold opening device and the right extrusion mold opening device, the grinding ball forming mold can be opened quickly. At the same time, the grinding ball forming mold is placed in advance, so that the moving frame can be quickly switched to the next grinding ball forming mold for mold opening, thereby improving the mold opening efficiency.

[0014] (2) The present invention provides a grinding ball casting mold opening device by stepping on it to provide impact force, and at the same time, it uses a specific gravity block to increase the impact force, so that the V-shaped extrusion opening knife and the impact V-shaped knife work together to impact and open the grinding ball forming mold, thereby reducing the difficulty of opening the grinding ball forming mold. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the mold opening device;

[0016] Figure 2 This is a structural schematic diagram of the positioning plate;

[0017] 1-Moving frame, 2-Positioning hinge plate, 3-Reinforcing rib, 4-V-shaped extrusion and spreading knife, 5-Pull rod, 6-Handle, 7-Positioning strip, 8-Positioning groove, 9-Grinding ball shaping mold, 91-Male mold, 92-Female mold, 93-Spreading chamfer, 10-Positioning rod, 11-Swing rod, 12-Step rod, 13-Impact V-shaped knife, 14-Impact specific gravity block, 15-Impact block, 16-Positioning plate, 17-Spring. Detailed Implementation

[0018] The embodiments of this utility model are further described below with reference to the accompanying drawings. Example

[0019] like Figures 1 to 2As shown; a grinding ball casting mold opening device includes a movable frame 1, a left extrusion mold opening device, and a right extrusion mold opening device, both of which are mounted on the movable frame 1. The left extrusion mold opening device includes a positioning hinge plate 2, a V-shaped extrusion support knife 4, a pull rod 5, a handle 6, a positioning strip 7, and positioning grooves 8. The positioning hinge plate 2 is hinged to the movable frame 1 in the middle, and its lower end is connected to the V-shaped extrusion support knife 4. One end of the pull rod 5 is hinged to the upper end of the positioning hinge plate 2, and the other end is connected to the handle 6. The positioning strip 7 is mounted on the movable frame 1, and several positioning grooves 8 are formed on the positioning strip 7 and cooperate with the handle 6. The right extrusion mold opening device includes a swing rod 11, a foot pedal 12, an impact V-shaped knife 13, an impact weight block 14, an impact block 15, and a spring 17. One end of the swing rod 11 is hinged to the movable frame 1, and the other end is connected to the impact V-shaped knife 13 and the impact weight block 15 on both sides respectively. The impact block 15 is connected; one end of the pedal rod 12 is hinged to the swing rod 11 and the other end is connected to the impact weight block 14, which cooperates with the impact block 15; one end of the spring 17 is connected to the moving frame 1 and the other end is connected to the pedal rod 12; a positioning rod 10 is installed on the positioning strip 7; symmetrically arranged positioning plates 16 are installed on the moving frame 1; a reinforcing rib 3 for fixing the V-shaped extrusion blade 4 is connected to the positioning hinge plate 2; The device includes bearings, with the hinge joints of the positioning hinge plate 2 and the swing rod 11 connected by bearings; a foot pedal is installed on the foot pedal 12; and a grinding ball shaping mold 9, which includes a male mold 91, a female mold 92, a chamfered opening 93, and positioning posts. At least two of the positioning posts are connected to the male mold 91, and the female mold 92 has positioning holes that mate with the positioning posts. The chamfered opening 93 is provided on the side of the male mold 91 and the female mold 92 that are close to each other.

[0020] The employee first uses clamps to erect the grinding ball shaping mold 9 in a straight line, then pushes the moving frame 1 to move the grinding ball shaping mold 9 between the two positioning plates 16. The positioning plates 16 are used to correct the state of the grinding ball shaping mold 9. Then the employee pushes the handle 6, which drives the pull rod 5. The pull rod 5 drives the positioning hinge plate 2 to make the tip of the V-shaped extrusion spreading knife 4 get stuck in the spreading chamfer 93 of the closing male mold 91 and female mold 92. The handle 6 is then placed into the positioning groove 8 to ensure that the V-shaped extrusion spreading knife 4 is positioned. The employee steps on the foot pedal and pushes the foot pedal 12 to make the impact weight block 14 on the foot pedal 12 contact the impact block 15. At the same time, the employee pushes the swing rod 11 to swing, which moves the V-shaped knife 13 to determine whether it can be inserted into the spreading chamfer 93 of the closing male mold 91 and female mold 92. In step 3, after confirmation, release the foot to restore the push swing rod 11 to a vertical state. Ideally, the push swing rod 11 should be in the chamfered position 93 when it is vertical. The foot pedal 12 is reset by the spring 17. Finally, slam the foot on the pedal to cause the impact weight block 14 to impact the impact block 15. The impact force is directly applied between the male mold 91 and the female mold 92 through the V-shaped cutter 13. The V-shaped cutter 13 and the V-shaped extrusion and opening cutter 4 separate the male mold 91 and the female mold 92 through the extrusion force generated by the impact. After the grinding ball shaping mold 9 is opened, pull the handle 6 to hang it on the positioning rod 10. The handle 6 drives the pull rod 5, which causes the positioning hinge plate 2 to tilt up. Then, push the moving frame 1 to enter the position of the next grinding ball shaping mold 9 for mold opening. This process is repeated to open the mold.

[0021] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model are covered within the scope of this utility model.

Claims

1. A mill ball casting knockout device, characterized by: The utility model relates to a left extrusion mold opening device and a right extrusion mold opening device, which are both installed on the moving frame (1), the left extrusion mold opening device comprises a positioning hinged plate (2), a V-shaped extrusion opening knife (4), a pull rod (5), a handle (6), a positioning strip (7) and a positioning groove (8), the middle part of the positioning hinged plate (2) is hinged on the moving frame (1), the lower end of the positioning hinged plate (2) is connected with the V-shaped extrusion opening knife (4), one end of the pull rod (5) is hinged with the upper end of the positioning hinged plate (2) and the other end is connected with the handle (6), the positioning strip (7) is installed on the moving frame (1), and a plurality of positioning grooves (8) are arranged on the positioning strip (7) and matched with the handle (6).

2. A casting mold opening device for grinding balls as claimed in claim 1, characterized in that: The right extrusion mold opening device comprises a swing rod (11), a treading rod (12), a striking V-shaped knife (13), a striking specific gravity block (14), a striking block (15) and a spring (17), one end of the swing rod (11) is hinged on the moving frame (1) and the other end is connected with the striking V-shaped knife (13) and the striking block (15) on the two sides, one end of the treading rod (12) is hinged on the swing rod (11) and the other end is connected with the striking specific gravity block (14), the striking specific gravity block (14) is matched with the striking block (15), and one end of the spring (17) is connected on the moving frame (1) and the other end is connected with the treading rod (12).

3. A casting mold opening device for grinding balls as claimed in claim 2, characterized in that: The positioning strip (7) is provided with a positioning rod (10).

4. A casting mold opening device for grinding balls as defined in claim 3, wherein: The moving frame (1) is provided with symmetrical positioning plates (16).

5. A device for casting a grinding ball as claimed in claim 4, wherein: The positioning hinged plate (2) is provided with a reinforcing rib (3) connected with the V-shaped extrusion opening knife (4).

6. A device for casting a grinding ball as claimed in claim 5, wherein: The hinge part of the positioning hinged plate (2) and the swing rod (11) is connected through a bearing.

7. A device for casting a grinding ball as claimed in claim 6, characterized in that: The treading rod (12) is provided with a treading plate.

8. A casting mold opening device for grinding balls as claimed in claim 1 or 7, characterized in that: The utility model also comprises a grinding ball shaping die (9), the grinding ball shaping die (9) comprises a male die (91), a female die (92), an opening chamfer (93) and positioning columns, at least two positioning columns are connected on the male die (91), the female die (92) is provided with positioning holes matched with the positioning columns, and the male die (91) and the female die (92) are provided with the opening chamfer (93) on the side close to each other.

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