Mold capable of simultaneously pouring multiple inertia rings

Abstract

The utility model relates to the technical field of casting forming tools, in particular to a die capable of simultaneously casting a plurality of inertia rings, which comprises a die plate, a plurality of upper dies fixedly arranged on the upper end face of the die plate, and a plurality of lower dies fixedly arranged on the lower end face of the die plate and respectively corresponding to the upper dies. Dead heads and upper pouring gates for communicating the dead heads with the upper dies are fixedly arranged among the plurality of upper dies, sprues and lower pouring gates for communicating the sprues with the lower dies are fixedly arranged among the lower dies, the positions of the upper pouring gates correspond to the positions of the lower pouring gates, and the positions of the dead heads correspond to the positions of the sprues; according to the scheme, the technical problem that the production efficiency is low when an existing mold suitable for the sand mold casting process is used for producing quality rings can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting tooling, in particular to a mold capable of casting a plurality of inertia rings at the same time. Background Art

[0002] Sand casting is a common metal casting process in modern technology. This process uses sand in a sand box as a mold material. Sand has high fire resistance, thermal stability and good air permeability. Sand is first squeezed through a mold to form a cavity in the sand box, and then the molten metal is poured into the cavity. After cooling and solidification, the desired casting will be formed. Sand casting technology is widely used in various industrial fields, such as automobiles, machinery, aviation, etc., due to its low cost, flexible production, and strong adaptability.

[0003] The mass ring (also known as the inertia ring) plays a vital role in modern mechanical systems. It has the functions of stabilizing the rotation speed, reducing vibration and energy loss, and can help the mechanical system achieve efficient, stable and reliable energy conversion and storage. In the process of producing the mass ring using the sand casting process, the design of the mold is very critical. It can not only shape the complete shape of the part, but also ensure its precise size.

[0004] However, the existing casting molds for mass rings can usually only cast one cavity at a time, and the production efficiency is low. The prior art discloses a stacked inertia ring forming mold (Announcement No.: CN215544702U), which increases the number of products cast in one time by stacking sand shells, but is not suitable for sand casting technology, because in actual application, the mold needs to be pressed into the sand to form a concave cavity on the sand surface. The prior art solution designed with the stacking technical idea cannot form a complete and standard cavity. Utility Model Content

[0005] The utility model provides a mold capable of simultaneously casting a plurality of inertia rings, and can solve the technical problem of low production efficiency when using the existing mold suitable for sand casting process to produce quality rings.

[0006] This application provides the following technical solutions:

[0007] A mold capable of simultaneously casting a plurality of inertia rings comprises a template, a plurality of upper molds fixedly arranged on the upper end surface of the template, a plurality of lower molds fixedly arranged on the lower end surface of the template and corresponding to the plurality of upper molds respectively, a riser and an upper runner connecting the riser and the upper molds are fixedly arranged between the plurality of upper molds, a gate and a lower runner connecting the gate and the lower molds are fixedly arranged between the lower molds, the positions of the upper runner and the lower runner correspond to each other, and the positions of the riser and the gate correspond to each other.

[0008] Beneficial effects: The mold in the present invention can extrude sand by using the upper mold and the lower mold on several templates during the production process of casting the inertia ring by the sand casting process, and form multiple complete cavities for casting and molding the inertia ring after the box is closed. In the process of extruding the sand, the upper runner and the lower runner also form a complete runner in the sand at the same time, so that the molten metal is diverted from the unified runner into several cavities and filled at the same time, ensuring the consistency of the cooling time and temperature change of the subsequent molded inertia ring, which is conducive to casting multiple inertia rings at one time on the basis of ensuring quality issues, and is conducive to improving the production efficiency of the inertia ring. In addition to the gate, a riser is also provided. The riser is mainly used to compensate for the shrinkage of the molten metal during the cooling process. The excess molten metal in the riser quickly replenishes the shrinkage part of the molten metal in the cavity.

[0009] Furthermore, as an improvement, the upper runner and the lower runner each include a main runner and a plurality of straight runners connecting the main runner and the upper mold or the lower mold, and the gate and the riser are both located in the middle of the main runner.

[0010] Beneficial effect: The cavity finally formed by the gate and the riser is the pouring channel for the molten metal. After flowing through the main runner and the straight runner in sequence, the cavities formed by the upper and lower molds are filled with molten metal at the same time, which is beneficial to ensure the quality stability of several inertia rings after cooling and forming.

[0011] Further, as an improvement, the template is a rectangular parallelepiped structure as a whole including four edges, and the main runner is arranged inclined to the edges.

[0012] Beneficial effects: The design of the main runner is related to the position distribution among several upper dies or lower dies. Compared with the main runner arranged parallel to the edge of the template, the main runner arranged obliquely to the edge of the template is beneficial to stagger the distribution of several upper dies or lower dies on the basis of maintaining the overall length of the main runner, so as to ensure the independence of each other in forming the cavity in the sand. The main runner that does not meet the length standard requirement may cause stress concentration problem when the molten metal flows, so that a stress concentration area is formed inside the inertia ring finally produced, and the risk of the inertia ring breaking during the use of the product is increased. If the independence problem of the cavity is solved by expanding the overall area of ​​the template, the manufacturing cost will increase.

[0013] Furthermore, as an improvement, mounting holes are provided on the edges around the lower end surface of the template.

[0014] Beneficial effect: The function of the mounting hole is to cooperate with the device for lifting the mold on the existing production line to achieve the fixation and lifting of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the first embodiment of the mold capable of simultaneously casting multiple inertia rings of the utility model;

[0016] Figure 2 for Figure 1 AA section view;

[0017] Figure 3 for Figure 1 Top view of the . DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods:

[0019] The markings in the drawings of the specification include: template 1, short edge 11, long edge 12, mounting hole 13, upper mold 2, riser 21, upper main runner 22, upper straight runner 23, center line 24, lower mold 3, lower main runner 31, lower straight runner 32, gate 33.

[0020] Embodiment 1

[0021] Combination Figure 1-Figure 3 As shown, a mold capable of simultaneously casting a plurality of inertia rings comprises a template 1, an upper mold 2 fixedly arranged on the upper end surface of the template 1, and a lower mold 3 fixedly arranged on the lower end surface of the template 1.

[0022] The template 1 as a whole is a layered plate with a rectangular structure and a layer height of 30 mm. It includes two parallel short edges 11 and two parallel long edges 12. The length of the short edge 11 is 715 mm, and the length of the long edge 12 is 825 mm. Mounting holes 13 are provided on the edges around the lower end face of the template 1 to cooperate and fix with the device for lifting the template 1 on the production line.

[0023] In the present embodiment, there are four upper molds 2, which are located on the upper end surface of the template 1 and are integrally formed with the template 1. A riser 21 with a trapezoidal cross-section is fixedly arranged between the four upper molds 2. The riser 21 is a component used to compensate for the shrinkage of the molten metal during the cooling process during the casting process. By arranging the riser 21, the shrinkage cavities and shrinkage defects inside the casting can be reduced. An upper main runner 22 and four upper straight runners 23 respectively connecting the upper main runner 22 and the four upper molds 2 are fixedly arranged between the riser 21 and the four upper molds 2. The riser 21 and the upper straight runner 23 are both located on the center line 24 formed between two opposite upper molds 2. The angle between the upper straight runner 23 and the short edge 11 on the template 1 is an acute angle = 75°, and the angle between the upper straight runner 23 and the long edge 12 on the template 1 is an obtuse angle = 115°.

[0024] The position and number of the lower mold 3 correspond to those of the upper mold 2. In this embodiment, a total of four lower molds 3 are arranged. A lower main runner 31 and four lower straight runners 32 connecting the lower main runners 31 and the lower molds 3 are obliquely arranged between the lower molds 3. The middle position of the lower main runner 31 is the gate 33 and corresponds to the riser 21 on the upper main runner 22.

[0025] It is worth mentioning that the riser 21, upper die 2, lower die 3, runner, etc. are all convex parts. After squeezing the sand in the sand box, a corresponding concave cavity will be formed in the sand. After pouring molten metal into the cavity and cooling it, the main part of the inertia ring will be formed. The specific application process includes the following steps:

[0026] Step 1: Design and assemble the mold

[0027] S1: Mold is one of the key steps in sand casting. When designing, factors such as the shape, size, and wall thickness of the casting need to be considered to ensure the quality and production efficiency of the casting. The mold used in this embodiment includes an upper mold 2 and a lower mold 3, which are two main parts of the inertia ring formed in the sand casting process. The upper mold 2 simulates the upper surface and part of the side wall of the inertia ring body, while the lower mold 3 contains the lower surface of the inertia ring body and another part of the side wall. The combination of the mold needs to be precise to ensure that the size and shape of the casting meet the design requirements.

[0028] S2: Assemble the formed mold onto a device for lifting the mold on the production line using the mounting holes 13 on the template 1.

[0029] Step 2: Casting and pouring

[0030] S1: The transport device on the production line places the upper sand box and the lower sand box filled with sand above and below the mold respectively, and then uses the device for lifting the mold to squeeze the sand in the upper sand box and the lower sand box respectively, so that a concave cavity appears. For the convenience of explanation, the riser 21, gate 33, runner, etc. that appear below are all cavities squeezed out by the template 1.

[0031] After the upper sand box and the lower sand box are combined, the cavities on both sides are combined into a cavity that adapts to the shape and size of the inertia ring body to be produced. Note that at this time, the cavity formed by the riser 21, the gate 33, the main runner (the upper main runner 22 and the lower main runner 31 are combined), and the straight runner (the upper straight runner 23 and the lower straight runner 32 are combined) is through.

[0032] S2: pouring the molten metal from the riser 21 into the cavity, so that the molten metal flows from the gate 33 located at the bottom of the riser 21 through the main runner and the straight runner in sequence, and finally fills the cavity formed by the upper mold 2 and the lower mold 3.

[0033] Step 3: Cooling and subsequent processing

[0034] The cooled molten metal solidifies to form the main part of the inertia ring, and then it undergoes subsequent processing steps such as sand dropping, cleaning, and casting.

[0035] This solution simultaneously arranges a plurality of upper dies and lower dies of corresponding number and position on the upper end face and the lower end face of the template, and respectively fixes upper runners and lower runners between the upper dies and the lower dies, and pours molten metal into the cavity formed by the through risers and the gates, so that a plurality of complete inertia rings can be formed by pouring at one time, thereby ensuring the molding quality of the inertia ring on the basis of greatly improving the production efficiency.

[0036] The above is only an embodiment of the utility model. The utility model is not limited to the field involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A mold capable of casting multiple inertia rings at the same time, characterized in that: It includes a template, several upper molds fixedly arranged on the upper end surface of the template, and several lower molds fixedly arranged on the lower end surface of the template and corresponding to the several upper molds respectively. Riser and upper runners connecting the risers and the upper molds are fixedly arranged between the several upper molds. Gates and lower runners connecting the gates and the lower molds are fixedly arranged between the lower molds. The positions of the upper runners correspond to the lower runners, and the positions of the risers correspond to the gates.

2. The mold capable of simultaneously casting a plurality of inertia rings according to claim 1, characterized in that: The upper runner and the lower runner both include a main runner and a plurality of straight runners connecting the main runner and the upper mold or the lower mold, and the gate and the riser are both located in the middle of the main runner.

3. The mold capable of simultaneously casting a plurality of inertia rings according to claim 2, characterized in that: The template is a rectangular parallelepiped structure as a whole including four edges, and the main runner is arranged inclined to the edges.

4. The mold capable of simultaneously casting a plurality of inertia rings according to claim 3, characterized in that: Mounting holes are arranged on the edges around the lower end surface of the template.

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