Riser head plate fixing tool

Abstract

The utility model provides a riser plate fixing tool. The riser plate fixing tool comprises a template on a casting sand box, a casting head pattern is arranged on the template; and the casting head pattern is detachably connected with the template. A stop pin is in threaded fit with the template and is stopped on the peripheral surface of the casting head pattern, so that the casting head pattern is prevented from being extruded by casting sand to displace in the casting sand ramming process, and the problems that in the prior art, the casting head pattern is easy to move and incline due to external force, the casting sand enters a casting head, and the casting quality is influenced are solved. And furthermore, molding sand easily enters a casting during pouring, so that slag inclusion defects are caused, and the quality of the casting is reduced.

Description

Technical Field

[0001] The utility model relates to a casting mould, in particular to a riser plate fixing tool. Background Art

[0002] Casting is a metal hot working process with a history of about 6,000 years. It is a process of pouring liquid metal into a casting cavity that is adapted to the shape of the part, and then cooling and solidifying it to obtain a part or blank.

[0003] Riser is an important element in the casting process, usually a supplementary part attached to the top or side of the casting. In the casting mold, the cavity of the riser is mainly used to store liquid metal. It plays the role of replenishing metal when the casting is formed to prevent defects such as shrinkage cavities and shrinkage. In addition, the riser also has the function of exhaust and slag collection. However, the main function of the riser is to ensure the quality of the casting by compensating for shrinkage.

[0004] During molding, the workpiece pattern and the pouring and riser pattern are in the lower box and the upper box respectively. In order to ensure the quality of the casting, the molding sand near the workpiece pattern and the pouring and riser pattern needs to be compacted during the molding process, so that the molding sand is formed under the action of external force and reaches the required compactness to become a sand mold, ensuring that the sand mold has a certain strength, ensuring that it will not collapse when the workpiece pattern is taken out, and being able to withstand the impact of the metal solution without being washed away during pouring.

[0005] During the process of mechanical vibration compaction and manual compaction, the riser pattern is in a free state, has light weight, and has a small contact area with the mold plate. When the molding sand is compacted mechanically or manually, the molding sand will deform and squeeze the riser pattern in the molding sand. When the riser pattern is affected by external force, it will move and tilt, causing the molding sand to enter the riser. If it is not discovered and cleaned in time, the molding sand will enter the interior of the casting during pouring, causing slag inclusion defects, which brings great challenges to the assurance of casting quality.

[0006] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0007] The utility model aims to solve the deficiencies of the prior art and thus provide a riser template fixing tool which does not move after being stressed and thus prevents molding sand from entering the riser.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A riser template fixing tool comprises a template on a casting sand box; the template is provided with a pouring riser pattern; the pouring riser pattern is detachably connected to the template.

[0010] Preferably, a stop pin is threadedly fitted on the template, and the stop pin is stopped on the outer peripheral surface of the pouring and riser pattern.

[0011] Preferably, a plurality of the stop pins are abutted and matched on the outer circumferential surface of the pouring and riser pattern to form a detachable pouring and riser pattern unit, and a plurality of the detachable pouring and riser pattern units are provided.

[0012] Preferably, in the same detachable pouring and riser pattern unit, all the stop pins are evenly distributed around the pouring and riser pattern axis.

[0013] Preferably, one end of the stop pin is provided with a thread, and the template is provided with a threaded hole; the threaded end of the stop pin is threadedly matched with the threaded hole of the template.

[0014] Preferably, a blind hole is provided on the template, one end of the pouring and rising pattern is provided in the blind hole, and the inner wall of the blind hole limits the displacement of the pouring and rising pattern.

[0015] Preferably, a runner is provided on the template, and the runner does not interfere with the installation position of the pouring and riser pattern.

[0016] Preferably, hanging openings are arranged around the template.

[0017] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0018] 1. The mold plate is threaded with a stop pin, which stops on the outer peripheral surface of the pouring and riser pattern to prevent the pouring and riser pattern from being squeezed by the molding sand and displaced during the pounding of the molding sand. This avoids the problem in the prior art that the riser pattern is easily moved and skewed by external force, causing the molding sand to enter the riser, and then easily enter the casting during pouring, causing slag inclusion defects, thereby reducing the quality of the casting.

[0019] 2. The stopper pin is set to prevent the riser pattern from shifting, which improves the working efficiency and avoids the need to manually press and fix the riser pattern when placing sand near the riser pattern. This operation is required for each riser pattern, which will increase the labor intensity and labor volume, and the pounding efficiency is low. In addition, the stability of manually fixing the riser pattern is low, and the riser pattern will still tilt or shift during the pounding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of Example 1 of the riser plate fixing tool of the utility model, which includes an upper box and a lower box structure.

[0021] Figure 2It is a structural schematic diagram of Example 2 of the riser template fixing tool of the utility model, which includes structures such as the template, the pouring riser pattern and the stop pin.

[0022] Figure 3 It is a partial cross-sectional view of Example 1 of the riser template fixing tool of the utility model, which includes structures such as the template and the stop pin.

[0023] In the figure:

[0024] 11. Casting and riser pattern; 12. Mould plate; 13. Stop pin; 14. Upper box; 15. Lower box. DETAILED DESCRIPTION

[0025] The following is a specific implementation method, combined with Figures 1 to 3 , the technical solution of the utility model is further described in detail.

[0026] When the upper box 14 and the lower box 15 are molded, the workpiece pattern is at the bottom of the lower box 15, and the pouring and rising head pattern 11 is at the bottom of the upper box 14;

[0027] Specifically, the upper box 14 is placed on the mold plate 12, and the pouring and riser pattern 11 is detachably installed on the mold plate 12; when filling sand for molding, the mold plate 12 is the bottom surface of the upper box. In this state, sand is placed to compact the sand mold, and then the upper box is turned 180° to separate the mold plate 12 from the upper box to complete the upper box molding.

[0028] After the modeling is completed and before pouring, the upper box is turned 180° back to the original position and snapped onto the lower box. The mold is closed and casting begins.

[0029] Embodiment 1:

[0030] A riser template fixing tool comprises a template 12 on a casting sand box; a pouring riser pattern 11 is arranged on the template 12; the pouring riser pattern 11 is detachably connected to the template 12. Specifically, in this embodiment, the pouring riser pattern 11 is a cylinder. In other embodiments, the pouring riser pattern 11 can be a rectangular parallelepiped or other shapes, such as a truncated cone. A runner is arranged on the template, and the runner does not interfere with the installation position of the pouring riser pattern, that is, avoids the installation position of the pouring riser pattern.

[0031] Hanging openings are arranged around the template to facilitate the template 12 to be separated.

[0032] Furthermore, the mold plate 12 is threaded with a stop pin 13, which is stopped on the outer peripheral surface of the pouring and riser pattern 11 to prevent the pouring and riser pattern 11 from being squeezed by the molding sand and displaced during the pounding of the molding sand. This avoids the problem in the prior art that the riser pattern is easily moved and skewed by external forces, causing molding sand to enter the riser, and then causing molding sand to enter the interior of the casting during pouring, causing slag inclusion defects and reducing the quality of the casting.

[0033] Furthermore, one end of the stop pin 13 is provided with a thread, and the template 12 is provided with a threaded hole; the threaded end of the stop pin 13 is threadedly matched with the threaded hole of the template 12 .

[0034] The specific operation steps of this embodiment are:

[0035] 1) Mark the position of the pouring and riser on the template 12 according to the process drawing.

[0036] 2) Draw the outer contour line of the pouring head pattern 11 at the marked position.

[0037] 3) According to the outer contour line and the size of the stop pin 13, determine the position of the threaded hole on the template 12 and machine the threaded hole.

[0038] 4) Install the stop pin 13 into the threaded hole to fix the pouring head pattern 11.

[0039] 5) After each batch of workpieces is produced, the stop pin 13 is removed, and a new process drawing is installed to repeat the above steps.

[0040] Embodiment 2:

[0041] The difference between this embodiment and embodiment 1 is that, in this embodiment, a plurality of stop pins 13 are abutted and matched on the outer circumferential surface of the pouring and rising pattern 11 to form a pouring and rising pattern detachable unit, and a plurality of pouring and rising pattern detachable units are provided. Specifically, the pouring and rising pattern detachable unit includes a pouring and rising pattern 11 and a plurality of stop pins 13, and the stop pins 13 are distributed around the pouring and rising pattern 11.

[0042] Further, in the same detachable pouring and riser pattern unit, all the stop pins 13 are evenly distributed around the axis of the pouring and riser pattern 11. Preferably, three stop pins 13 are arranged in one detachable pouring and riser pattern unit.

[0043] The stop pin 13 is set to stop the pouring riser pattern 11 from being displaced, thereby improving the work efficiency and avoiding the need to manually press and fix the pouring riser pattern 11 when placing sand near the pouring riser pattern 11. When each pouring riser pattern 11 needs to perform this operation, the labor intensity and labor volume will increase, and the pounding efficiency is low. For example, in the same batch of casting operations, 7-8 pouring riser patterns 11 are set in each upper box, and 13 boxes are cast every day. Workers need to manually press and fix the pouring riser pattern 91-104 times. However, after the stop pin 13 is set, there is no need to manually press and fix the pouring riser pattern 11 when filling sand for molding, which can improve work efficiency and reduce workload and work intensity. In addition, the stability of manually fixing the pouring riser pattern 11 is low, and the pouring riser pattern 11 is still prone to tilt or displacement during the pounding process.

[0044] Embodiment 3:

[0045] The difference between this embodiment and embodiment 1 is that, in this embodiment, a blind hole is provided on the mold plate 12, one end of the pouring and riser pattern 11 is provided in the blind hole, and the inner wall of the blind hole limits the displacement of the pouring and riser pattern 11 to prevent the pouring and riser pattern 11 from being squeezed by the molding sand and displaced during the pounding of the molding sand.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A riser plate fixing tool, characterized in that: It includes a mold plate on a casting sand box; a pouring and riser pattern is arranged on the mold plate; the pouring and riser pattern is detachably connected to the mold plate; a stop pin is threadedly fitted on the mold plate, and the stop pin is stopped on the outer peripheral surface of the pouring and riser pattern; a thread is arranged on one end of the stop pin, and a threaded hole is opened on the mold plate; the threaded end of the stop pin is threadedly fitted into the threaded hole of the mold plate.

2. The riser plate fixing tool according to claim 1, characterized in that: The outer circumferential surface of the pouring and riser pattern is abutted and matched with a plurality of the stop pins to form a detachable pouring and riser pattern unit, and a plurality of detachable pouring and riser pattern units are provided.

3. The riser plate fixing tool according to claim 2, characterized in that: In the same detachable pouring and riser pattern unit, all the stop pins are evenly distributed around the pouring and riser pattern axis.

4. The riser plate fixing tool according to claim 1, characterized in that: The mold plate is provided with a blind hole, one end of the pouring and rising pattern is arranged in the blind hole, and the inner wall of the blind hole limits the displacement of the pouring and rising pattern.

5. The riser plate fixing tool according to claim 1, characterized in that: The mold plate is provided with a runner, and the runner does not interfere with the installation position of the pouring and riser pattern.

6. The riser plate fixing tool according to claim 1, characterized in that: Hanging openings are arranged around the template.

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